BS ISO 6690-2007 Milking machine installations - Mechanical tests《挤奶装置 机械试验》.pdf
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1、 g49g50g3g38g50g51g60g44g49g42g3g58g44g55g43g50g56g55g3g37g54g44g3g51g40g53g48g44g54g54g44g50g49g3g40g59g38g40g51g55g3g36g54g3g51g40g53g48g44g55g55g40g39g3g37g60g3g38g50g51g60g53g44g42g43g55g3g47g36g58ICS 65.040.10Milking machine installations Mechanical tests BRITISH STANDARDBS ISO 6690:2007BS ISO
2、6690:2007This British Standard was published under the authority of the Standards Policy and Strategy Committee on 30 March 2007 BSI 2007ISBN 978 0 580 50337 5Amendments issued since publicationAmd. No. Date Commentscontract. Users are responsible for its correct application.Compliance with a Britis
3、h Standard cannot confer immunity from legal obligations.National forewordThis British Standard was published by BSI. It is the UK implementation of ISO 6690:2007. It supersedes BS ISO 6690:1996 which is withdrawn.The UK participation in its preparation was entrusted to Technical Committee AGE/32, A
4、gricultural 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 6690:2007(E)INTERNATIONAL STANDARD ISO6690Third edition2007-02-15Milking ma
5、chine installations Mechanical tests Installations de traite mcanique Essais mcaniques BS ISO 6690:2007ii iiiContents Page Foreword. v 1 Scope . 1 2 Normative references . 1 3 Definitions . 1 4 Test equipment . 1 4.1 General. 1 4.2 Measurement of vacuum 2 4.3 Measurement of a vacuum changing over ti
6、me 2 4.4 Measurement of atmospheric pressure 2 4.5 Measurement of back pressure. 2 4.6 Measurement of airflow 3 4.7 Measurement of pulsation characteristics. 3 4.8 Measurement of pump rotational frequency 3 4.9 Teatcup plugs 3 5 Vacuum system. 4 5.1 General requirements and preparation 4 5.2 Vacuum
7、regulation 5 5.3 Vacuum pumps . 8 5.4 Vacuum regulator leakage . 10 5.5 Vacuum gauge error. 11 5.6 Vacuum drop in air line 11 5.7 Effective volume of interceptor . 11 5.8 Effective volume of the sanitary trap 12 5.9 Leakage in vacuum system . 12 5.10 Vacuum drop across vacuum taps for bucket milking
8、 units . 12 6 Pulsation system 13 6.1 Airflow at stall taps. 13 6.2 Pulsation rate, pulsator ratio, pulsation chamber vacuum phases and vacuum drop in pulsator air line . 13 7 Milk system 14 7.1 Slope of milkline . 14 7.2 Milk system leakage . 14 7.3 Effective volume of receiver 14 7.4 Leakage in re
9、leaser. 15 8 Milking unit 15 8.1 Mouthpiece depth and effective length of liner . 15 8.2 Teatcup or cluster fall-off air inlet. 17 8.3 Leakage through shut-off valves of milking units. 17 8.4 Air vent and leakage into teatcup or cluster17 8.5 Effective volume of buckets, transport cans and recorder
10、jars 17 8.6 Measuring the vacuum in the cluster . 18 8.7 Measurement of the vacuum drop from accessories attached in the long milk tube . 18 8.8 Airflow at the end of the long milk tube . 18 Annex A (normative) Laboratory tests of vacuum in the milking unit 20 Annex B (informative) Alternative metho
11、d for the measurement of air inlet and leakages in clusters 25 Annex C (informative) Examples of test procedure to reduce the test work . 27 BS ISO 6690:2007iv Annex D (informative) Test report for testing milking machine installations in accordance with ISO 6690. 32 BS ISO 6690:2007vForeword ISO (t
12、he International Organization for Standardization) is a worldwide federation 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 commit
13、tee has been established has the right to be represented on that committee. International 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 electrotech
14、nical standardization. International Standards are drafted in accordance with 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
15、 bodies for voting. Publication as an International Standard requires approval 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
16、 any or all such patent rights. ISO 6690 was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture and forestry. This third edition cancels and replaces the second edition (ISO 6690:1996) which has been technically revised. BS ISO 6690:2007blank1Milking machine installati
17、ons Mechanical tests WARNING Some of the tests specified in this International Standard involve procedures which could lead to a hazardous situation. The attention of any person performing tests in accordance with this International Standard is drawn to the need to be appropriately trained in the ty
18、pe of work to be carried out. It is left to the responsibility of the user to check all national regulatory conditions and health and safety requirements applicable for the relevant country. 1 Scope This International Standard specifies mechanical tests for milking machine installations in order to
19、verify compliance of an installation or component with the requirements of ISO 5707. It also stipulates the accuracy requirements for the measuring instruments. This International Standard is applicable for testing new installations and for periodic checking of installations for efficiency of operat
20、ion. Alternative test methods may be applicable if they can be shown to achieve comparable results. Test procedures described in Annex A are primarily for testing in the laboratory. An example of a field test procedure which can reduce the time and effort involved in testing is given in Annex C and
21、a corresponding test report in Annex D. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendme
22、nts) applies. ISO 3918:2007, Milking machine installations Vocabulary ISO 5707:2007, Milking machine installations Construction and performance 3 Definitions For the purposes of this document, the terms and definitions given in ISO 3918 apply. 4 Test equipment 4.1 General Measurements to be made for
23、 the specific milking machine shall be determined before making the tests. The measuring equipment shall have a precision (maximum error) that, together with the skill of the tester, ensures that the requirements given in ISO 5707 can be recorded with sufficient accuracy. The instruments shall be ca
24、librated regularly to ensure the given specifications. BS ISO 6690:20072 The measuring points A1, A2, Vm, Vr, Vp and Pe referred to in this International Standard are described in 4.2.2 and 4.2.3 of ISO 5707:2007. 4.2 Measurement of vacuum The instrument used for measuring vacuum shall be able to me
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