BS ISO 5707-2007 Milking machine installations - Construction and performance《挤奶装置 结构和性能》.pdf

1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58performanceICS 65.040.10Milking machine installations Construction and BRITISH STANDARDBS ISO 5707:

2、2007BS ISO 5707:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 March 2007 BSI 2007ISBN 978 0 580 50338 2Amendments issued since publicationAmd. No. Date Commentscontract. Users are responsible for its correct application.Compliance wi

3、th a British Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 5707:2007. It supersedes BS ISO 5707:1996 which is withdrawn. The UK participation in its preparation was entrusted to Technical Committ

4、ee AGE/32, Agricultural implements and trailers.A list of organizations represented on AGE/32 can be obtained on request to its secretary.This publication does not purport to include all the necessary provisions of a Reference numberISO 5707:2007(E)INTERNATIONAL STANDARD ISO5707Third edition2007-02-

5、15Milking machine installations Construction and performance Installations de traite mcanique Construction et performances BS ISO 5707:2007ii iiiContents Page Foreword. v Introduction . vi 1 Scope . 1 2 Normative references . 1 3 Terms and definitions. 1 4 General. 2 4.1 Tests for compliance 2 4.2 A

6、ccess for measurements . 2 4.3 Safety and hygiene . 3 4.4 Materials 3 4.5 Users manual 4 5 Vacuum system. 5 5.1 General. 5 5.2 Vacuum regulation 5 5.3 Vacuum pumps . 6 5.4 Vacuum regulator . 7 5.5 Vacuum gauge 8 5.6 Air lines 8 5.7 Interceptor . 9 5.8 Sanitary trap 9 5.9 Leakage into the vacuum syst

7、em . 9 5.10 Vacuum taps for bucket milking units 9 6 Pulsation system 10 6.1 Design data 10 6.2 Pulsator air line . 10 6.3 Pulsation rate, pulsator ratio and pulsation chamber vacuum phases 10 7 Milk system 11 7.1 General. 11 7.2 Design of milklines . 11 7.3 Air leakage. 11 7.4 Drainage. 11 7.5 Milk

8、 inlets. 11 7.6 Diversion of milk. 11 7.7 Receiver . 11 7.8 Releaser . 12 7.9 Delivery line. 12 8 Milking unit 12 8.1 General. 12 8.2 Teatcup 12 8.3 Teatcup attachment 13 8.4 Teatcup removal . 13 8.5 Vacuum shut-off 13 8.6 Air vent and leakage. 13 8.7 Vacuum in the milking unit 13 8.8 Milk recording

9、 equipment 14 8.9 Attachments to the milking unit 14 8.10 Long milk tubes 15 8.11 Bucket milking units. 15 BS ISO 5707:2007iv 9 Cleaning . 15 Annex A (normative) Vacuum pump capacity Effective reserve plus allowances for cows and water buffaloes 16 Annex B (informative) Determination of the minimum

10、internal diameter of air lines 22 Annex C (informative) Determination of the minimum internal diameter of milklines for cows and water buffaloes 29 Annex D (informative) Small ruminants . 37 BS ISO 5707:2007vForeword ISO (the International Organization for Standardization) is a worldwide federation

11、of national standards bodies (ISO member bodies). The work of preparing International Standards is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. I

12、nternational organizations, governmental and non-governmental, in liaison with ISO, also take part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with

13、 the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is to prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approva

14、l by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 5707 was prepared by Technical Committee

15、ISO/TC 23, Tractors and machinery for agriculture and forestry. This third edition cancels and replaces the second edition (ISO 5707:1996) as well as ISO 5707:1996/Cor.1:1997, which have been technically revised. BS ISO 5707:2007vi Introduction This International Standard has been developed in respo

16、nse to worldwide demand for minimum specifications for milking machine installations. The basic requirements for the construction and performance of milking machines for animals are determined by the physiology of the animal and the need for a standard of high hygiene and milk quality. BS ISO 5707:2

17、0071Milking machine installations Construction and performance 1 Scope This International Standard specifies the minimum performance and information requirements and certain dimensional requirements for satisfactory functioning of milking machines for milking and cleaning. It also specifies minimum

18、requirements for materials, design, manufacture and installation. This International Standard is applicable to milking machines for milking cows, water buffaloes, sheep and goats where animals are milked with pulsation created by vacuum, and where milk is, at least partly, transported with the help

19、of airflow. Some clauses are not applicable to all types of milking machines. The qualitative requirements also apply to installations for milking other mammals used for milk production. 2 Normative references The following referenced documents are indispensable for the application of this document.

20、 For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments) applies. ISO 3918:2007, Milking machine installations Vocabulary ISO 4288, Geometrical Product Specifications (GPS) Surface texture: Profile method

21、Rules and procedures for the assessment of surface texture ISO 6690:2007, Milking machine installations Mechanical tests ISO 12100-1, Safety of machinery Basic concepts, general principles for design Part 1: Basic terminology, methodology ISO 12100-2, Safety of machinery Basic concepts, general prin

22、ciples for design Part 2: Technical principles ISO 14159, Safety of machinery Hygiene requirements for the design of machinery IEC 60335-2-70, Household and similar electrical appliances Safety Part 2-70: Particular requirements for milking machines 3 Terms and definitions For the purposes of this d

23、ocument, the terms and definitions given in ISO 3918 apply. BS ISO 5707:20072 4 General 4.1 Tests for compliance The methods for performance testing referred to in this document are specified in ISO 6690. These testing methods may not be sufficient to test the performance of an installation incorpor

24、ating special design features. In order to avoid limitation of development, other systems than those described in this International Standard can be used if the same result can be achieved. Such systems and other special performance characteristics that are not covered by the requirements in this In

25、ternational Standard should also be described and specified in the users manual. 4.2 Access for measurements 4.2.1 General The connection points specified in 4.2.2 and 4.2.3 shall be provided to test the function of the installation. Dismantling parts of the milking machine is acceptable to access t

26、hese connection points. All connection points and their location shall be described in the users manual. 4.2.2 Airflow measuring connections The following connection points shall be provided for an airflow meter: A1: to enable measurement of effective reserve, manual reserve and regulator leakage: i

27、n bucket or direct-to-can milking machines, between the regulator sensing point and the first vacuum tap; in pipeline milking machines, at or near the receiver(s), upstream of the sanitary trap(s); in recorder milking machines, at every sanitary trap, or near the sanitary trap(s) on the milking vacu

28、um line(s); A2: to enable measurement of leakage into the vacuum and milk systems, between the vacuum pump(s) and the sanitary trap(s) or the first vacuum tap. See connection points A1 and A2 in Figures 1, 2 and 3 of ISO 3918:2007. NOTE In bucket and direct-to-can milking machines, the connection po

29、int A2 is the same as A1. When closed, e.g. not in use, these connection points shall not form any trap for liquids. The connection point shall have the same internal diameter as the air line or (48,5 2) mm, whichever is smaller. 4.2.3 Vacuum measuring connections The following connection points sha

30、ll be provided for a vacuum meter: Vm at or upstream of the measuring point A1; Vr near each regulator sensing point; Vp near each vacuum pump inlet. To enable measurement of exhaust backpressure, a suitable connection point Pe shall be provided to measure exhaust backpressure on each exhaust line a

31、t the vacuum pump outlet. BS ISO 5707:20073See measuring connections Vm, Vr, Vp and Pe in Figures 1, 2 and 3 of ISO 3918:2007. NOTE In a pipeline milking machine, Vm can be any point in the milking system in, or upstream of, the receiver. In a recorder milking machine, Vm can be in the milking vacuu

32、m line or in the nearest convenient recorder jar. In a bucket milking machine, Vm = Vr and can be combined with the nearest convenient vacuum tap. These connection points should be located at least five pipe diameters from any elbows, air inlet points or other fittings creating air turbulence. If th

33、e regulator sensing point is on a branch, there shall be two measuring points Vr, one to measure the vacuum drop in the air line upstream of this branch and the other one to determine the regulator leakage near the regulator sensing point. 4.2.4 Other necessary measures Means shall be provided to is

34、olate the vacuum pump from the installation to make it possible to measure the vacuum pump capacity. To enable measurement of leakage into the vacuum system and of the air used to produce pulsation, it is necessary that the pulsators can be stopped or disconnected in all types of installation. 4.3 S

35、afety and hygiene Installations shall comply with the relevant safety requirements given in ISO 12100-1 and ISO 12100-2. The electrical components shall comply with the relevant safety requirements given in IEC 60335-2-70. NOTE The significant hazards which require action to reduce risk are: crushin

36、g, shearing and slipping, tripping and falling hazards; electrostatic phenomena and external influences on electrical equipment, noise; unhealthy postures, inadequate local lighting and hazards caused by failure of the energy supply or disorder of the control system. The hygiene requirements given i

37、n ISO 14159 apply. The equipment has to be effective, easy and safe to use and test. Since most milking machines depend on a public electricity supply that fails occasionally, alternate means for operating the machine in such emergencies should be installed. It is important to design and install the

38、 equipment so that noise levels in the cowshed or parlour and in the vicinity are as low as practicable and comply with requirements in national legislation. Milking equipment and connection to milk storage facilities on the farm should be designed and maintained to minimize turbulence, frothing, fo

39、aming or agitation of the milk, thereby reducing physical damage to the milk fat and the development of free fatty acids. Further safety and hygiene requirements will be covered by legislation that will be the subject of other International Standards. 4.4 Materials All components that are subjected

40、to a vacuum shall be designed and constructed to withstand a minimum vacuum of 90 kPa without permanent distortion. Materials that may involve danger if damaged, such as glass, shall be designed using a safety factor of 5 against external pressure (i.e. 5 90 kPa). Materials in contact with milk shal

41、l meet requirements for food contact surfaces. All materials in contact with milk or cleaning solutions, whether used for rigid components (e.g. buckets, pipelines or recorder jars) or flexible components (e.g. joint rings, teatcup liners), shall be constructed to withstand the maximum temperature u

42、sed in the plant as specified in the users manual. In addition, such materials, when used in accordance with the recommendations in the users manual, shall not impart taint to the milk. BS ISO 5707:20074 All milk contact surfaces shall be free from engraving or embossing. All metal milk contact surf

43、aces, except for welded seams, shall have a surface roughness, Ra, less than or equal to 2,5 m when tested in accordance with ISO 4288. Surface roughness, Ra, on welded seams shall not exceed 16 m. Copper or copper alloys shall not be used in any part of the installation that may come into contact w

44、ith milk or cleaning and disinfecting fluids other than water. Materials that come into contact with cleaning and disinfecting fluids at concentrations of normal use shall be suitable for such contact. Materials that also come into contact with milk shall be resistant to both milk fat and cleaning a

45、nd disinfecting solutions. 4.5 Users manual 4.5.1 General The users manual shall specify a system of measures that ensure that the function, safety and hygiene of the milking machine are maintained during its intended lifetime. This includes instructions for routine servicing and replacement of indi

46、vidual parts. An indication shall be given as to whether particular actions should be performed by the user or if other suitably qualified personnel are needed. If it is intended that the user shall make adjustments, instructions for such adjustments shall be included. If special tools are required,

47、 these shall be supplied with the installation. The users manual shall be written in at least one of the countrys official languages that is relevant for the user. Besides the instructions stated in this clause, data given in other clauses in this document shall also be specified in the users manual

48、. 4.5.2 Installation details At least the following details shall be provided: mounting dimensions, space requirements and critical building dimensions; recommended ambient conditions for the different parts of the milking machine; minimum electrical power supply and earthing requirements; minimum w

49、ater supply and drainage requirements; nominal working pressure and capacity of a compressed air system; amount of airflow and vacuum for cleaning; the minimum required airflow use of vacuum-driven ancillary equipment. 4.5.3 Instructions for use At least the following instructions shall be provided: start up, operating and shut down procedures; the effective reserve, as calculated and as measured; recommended cleaning and disinfecting procedures, including temperatures a