Sampling, filling and cleaning system

Abstract

The utility model relates to the technical field of dairy product processing, and provides a sampling, filling and cleaning system which comprises a sampling tank, a liquid collecting pool, an emptying pipeline, a sampling pipeline and a return pipeline, the sampling tank is provided with a sampling cavity, and a cleaning interface, a vacuumizing interface, an emptying port and a filling port which are communicated with the sampling cavity; the liquid collecting tank is used for containing cleaning liquid and waste liquid discharged from the emptying opening; the emptying opening is communicated with the liquid collecting pool through an emptying pipeline, and the liquid collecting pool is communicated with the cleaning connector through a backflow pipeline; the emptying port is also communicated with the first end of the sampling pipeline, and the second end of the sampling pipeline is configured to move under the driving of the sampling vehicle so as to extend to the milk tank truck or the liquid collecting pool; the vacuumizing interface is configured to communicate with a negative pressure device. According to the sampling, filling and cleaning system disclosed by the utility model, the integrated design of sampling and cleaning is realized, the occupied field space is small, the sampling and filling efficiency of a raw milk sample is improved, and a sampling path is convenient to clean, so that the sampled sample is effectively prevented from being polluted.

Description

TECHNICAL FIELD

[0001] The utility model relates to dairy processing technical field especially, relate to a sampling filling and cleaning system. BACKGROUND

[0002] In the dairy processing process, generally after sampling raw milk, the sample is transported to each detection station for detection. At present, raw milk samples in the milk tank truck are usually sampled by manual fishing spoon. This sampling operation is complicated and inconvenient to load the sampled sample into the sample bottle.

[0003] In the related art, in order to improve the sampling efficiency, some manufacturers use sampling pipeline to collect raw milk samples under the cooperation of negative pressure equipment. However, this sampling design is complex and inconvenient to clean the sampling pipeline. If the sampling pipeline is not cleaned, the raw milk sample will be contaminated, affecting the detection result. UTILITY MODEL CONTENT

[0004] The utility model provides a kind of sampling filling and cleaning system to at least solve or improve the above-mentioned problems existing in raw milk sample in prior art, realize the integrated design of sampling and cleaning, not only small space of occupied place, and improve the sampling and filling efficiency of raw milk sample, it is convenient to clean sampling path, to effectively prevent sampling sample from being contaminated.

[0005] The utility model provides a kind of sampling filling and cleaning system, comprising: sampling tank, liquid collection tank, emptying pipeline, sampling pipeline and backflow pipeline;

[0006] The sampling tank has sampling cavity and the cleaning interface, vacuumizing interface, emptying port and filling port communicated with the sampling cavity;The liquid collection tank is used to contain cleaning fluid and waste liquid discharged from the emptying port;

[0007] The emptying port is communicated with the liquid collection tank through the emptying pipeline, and the liquid collection tank is communicated with the cleaning interface through the backflow pipeline;The emptying port is also communicated with the first end of the sampling pipeline, and the second end of the sampling pipeline is configured to move under the driving of sampling vehicle to extend to milk tank vehicle or the liquid collection tank;The vacuumizing interface is configured to be communicated with negative pressure equipment.

[0008] According to the sampling filling and cleaning system provided by the utility model, the rotating nozzle is arranged in the sampling cavity, and the rotating nozzle is communicated with the cleaning interface.

[0009] According to the sampling filling and cleaning system provided by the utility model, the emptying pipeline comprises collecting hopper, main pipeline, first branch pipe and second branch pipeline;

[0010] The collecting bucket is arranged at the lower side of the sampling tank to collect the liquid discharged from the exhaust port; the first end of the main pipeline is communicated with the collecting bucket, and the second end of the main pipeline is communicated with the first end of the first branch pipeline and the first end of the second branch pipeline respectively;

[0011] The liquid collecting pool comprises a waste liquid pool and a cleaning liquid pool, the second end of the first branch pipeline is communicated with the waste liquid pool, the second end of the second branch pipeline is communicated with the cleaning liquid pool, and the cleaning liquid pool is communicated through the backflow pipeline and the cleaning interface.

[0012] According to the sampling, filling and cleaning system provided by the utility model, the cleaning liquid pool comprises at least one of a clean water pool, an acid liquid pool and an alkali liquid pool.

[0013] According to the sampling, filling and cleaning system provided by the utility model, the milk receiving device comprises a telescopic driving member and a bracket.

[0014] The telescopic driving member is connected with the bracket to drive the bracket to be movably arranged between the sampling tank and the collecting bucket; the bracket is used for supporting a sample bottle, and the sample bottle is used for containing raw milk samples output from the filling port.

[0015] According to the sampling, filling and cleaning system provided by the utility model, the bracket has a first region and a second region, the first region is provided with a first through hole and a positioning groove used for placing the sample bottle, and the second region is provided with a second through hole and a splash-proof fence arranged along the circumferential direction of the second through hole.

[0016] The telescopic driving member is used for driving the bracket to move between a first position and a second position, when the bracket is at the first position, the first region is located between the sampling tank and the collecting bucket, the exhaust port and the first through hole are oppositely arranged, and the filling port and the positioning groove are oppositely arranged; when the bracket is at the second position, the second region is located between the sampling tank and the collecting bucket, and the exhaust port and the filling port both extend to the second through hole.

[0017] According to the sampling, filling and cleaning system provided by the utility model, the cleaning interface and the vacuumizing interface are respectively located at the top end of the sampling tank, and the exhaust port and the filling port are respectively located at the bottom end of the sampling tank.

[0018] According to the sampling, filling and cleaning system provided by the utility model, the vacuumizing pipeline is provided with an air filter.

[0019] According to the sampling filling and cleaning system, the sampling tank is provided with a pressure sensor, the pressure sensor extends into the sampling cavity and is electrically connected with a control module, and the control module is electrically connected with the negative pressure equipment.

[0020] The pressure sensor is used for collecting pressure information in the sampling cavity, and the control module is used for controlling the working state of the negative pressure equipment according to the pressure information fed back by the pressure sensor.

[0021] According to the sampling filling and cleaning system, the sampling filling and cleaning system further comprises a purging pipeline, a first end of the purging pipeline is configured to be communicated with a blowing equipment, and a second end of the purging pipeline is communicated with the cleaning interface.

[0022] The sampling filling and cleaning system provided by the utility model can suck raw milk from a milk tank truck, store the raw milk into the sampling tank, and fill the raw milk into sample bottles through the filling opening of the sampling tank, so that sampling and filling of the raw milk are completed; after sampling is completed, a circulating cleaning loop composed of the sampling tank, the emptying pipeline, the liquid collecting pool and the reflux pipeline, and a circulating cleaning loop composed of the sampling tank, the sampling pipeline, the liquid collecting pool and the reflux pipeline are adopted to clean each pipeline with cleaning liquid, so that the pipeline is cleaned to facilitate the next sampling operation.

[0023] As can be seen from the above, the sampling filling and cleaning system has the advantages that integration design of sampling and cleaning is realized, the occupied space is small, the sampling and filling efficiency of raw milk samples is improved, the sampling path is cleaned, and the sampling samples are effectively prevented from being polluted. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical scheme in the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced as follows. Obviously, the drawings in the following description are some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor on the basis of the drawings.

[0025] Figure 1 It is one of the principle schematic diagrams of the sampling filling and cleaning system provided by the utility model.

[0026] Figure 2 It is the second principle schematic diagram of the sampling filling and cleaning system provided by the utility model.

[0027] Figure 3It is the structure schematic view of the sampling filling and cleaning system provided by the utility model arranged on the rack.

[0028] Figure 4 It is the structure schematic view of the sampling tank provided by the utility model.

[0029] Figure 5 It is the structure schematic view of the milk receiving device provided by the utility model.

[0030] Figure 6 It is the structure schematic view of the sampling filling and cleaning system provided by the utility model (not including the liquid collecting pool).

[0031] Figure 7 It is the structure schematic view of the sampling filling and cleaning system provided by the utility model (not including the liquid collecting pool).

[0032] Reference signs:

[0033] 1, sampling tank; 11, sampling cavity; 12, cleaning interface; 13, vacuum extraction interface; 14, emptying port; 15, filling port; 121, rotary spray head; 111, pressure sensor;

[0034] 2, liquid collecting pool; 3, milk tank truck; 4, negative pressure equipment; 5, rack;

[0035] 6, milk receiving device; 61, telescopic driving part; 62, bracket; 621, first region; 622, second region; 6211, first through hole; 6212, positioning groove; 6221, second through hole; 6222, splash-proof fence;

[0036] 100, sample bottle; 10, emptying pipeline; 101, collecting hopper; 102, main pipeline; 103, first branch pipe; 104, second branch pipeline; 20, sampling pipeline; 30, backflow pipeline; 301, booster pump; 40, vacuum extraction pipeline; 41, air filter; 50, purging pipeline. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical scheme and advantages of the utility model more clear, the technical scheme in the utility model will be described clearly and completely below in combination with the drawings in the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by the ordinary skilled in the art without creative labor fall within the protection scope of the utility model.

[0038] The sampling filling and cleaning system provided by the utility model embodiment will be described in detail below in combination with Figures 1-7 and its application scenarios.

[0039] As Figure 1 And Figure 2 The utility model embodiment provides a kind of sampling filling and cleaning system, comprising: sampling tank 1, liquid collecting tank 2, emptying pipeline 10, sampling pipeline 20 and backflow pipeline 30;

[0040] Sampling tank 1 has sampling cavity 11 and with sampling cavity 11 communication cleaning interface 12, vacuumizing interface 13, emptying port 14 and filling port 15;Liquid collecting tank 2 is used to contain cleaning fluid and the waste liquid discharged by emptying port 14;

[0041] Emptying port 14 is communicated by emptying pipeline 10 and liquid collecting tank 2, and liquid collecting tank 2 is communicated by backflow pipeline 30 and cleaning interface 12;Emptying port 14 is also communicated with the first end of sampling pipeline 20, and the second end of sampling pipeline 20 is configured to move under the driving of sampling car, to extend to milk tank car 3 or liquid collecting tank 2;Vacuumizing interface 13 is configured to be communicated with negative pressure equipment 4.

[0042] It can be understood that the part of sampling pipeline 20 arranged on sampling car is preferably sampling hose, and this design facilitates the movement of sampling pipeline 20 driven by sampling car, so that the second end of sampling pipeline 20 is moved to sampling position when sampling of raw milk is needed, and the second end of sampling pipeline 20 is delivered into the tank opening of milk tank car 3, and when cleaning of sampling pipeline 20 is needed, the second end of sampling pipeline 20 is moved to cleaning position, and the second end of sampling pipeline 20 is extended to liquid collecting tank 2.

[0043] When sampling raw milk, after the second end of sampling pipeline 20 is delivered into the tank opening of milk tank car 3, negative pressure equipment 4 works, and performs vacuumizing treatment on sampling cavity 11 through vacuumizing interface 13, so that sampling cavity 11 is in negative pressure state.According to the pressure difference between atmospheric pressure and the internal environment of sampling cavity 11, raw milk in milk tank car 3 can enter sampling tank 1 along sampling pipeline 20. Wherein, negative pressure equipment 4 can be vacuum pump.

[0044] When filling raw milk, negative pressure equipment 4 stops working, and the air pressure in sampling cavity 11 can be set to positive pressure state or consistent with the air pressure of surrounding environment, at this time, raw milk can be filled into sample bottle 100 through filling port 15.

[0045] When cleaning pipeline, the second end of sampling pipeline 20 is extended to liquid collecting tank 2, at this time, not only sampling tank 1, emptying pipeline 10, liquid collecting tank 2 and backflow pipeline 30 can constitute circulating cleaning circuit, but also sampling tank 1, sampling pipeline 20, liquid collecting tank 2 and backflow pipeline 30 can constitute circulating cleaning circuit, by controlling the reciprocating flow of cleaning fluid along cleaning circuit, the cleaning of these cleaning circuits can be realized, so as to carry out next sampling operation after one sampling is completed.

[0046] As Figure 1 shown, the emptying port 14 is provided with an emptying valve K1, the sampling pipeline 20 includes a sampling hose, along the conveying direction of the raw milk in the sampling hose, the sampling hose is sequentially provided with a control valve K2 and a control valve K3, the sampling end of the sampling hose is configured to be arranged on the sampling vehicle, and the output end of the sampling hose is communicated with the emptying port 14 through a three-way valve.

[0047] As Figure 1 shown, the return pipeline 30 includes a return pipe and a booster pump 301, a control valve S1 and a control valve S2 which are sequentially arranged along the conveying direction of the cleaning liquid in the return pipe, one end of the return pipe close to the booster pump 301 is communicated with the collecting tank 2, and the other end of the return pipe close to the control valve S2 is communicated with the cleaning interface 12.

[0048] In actual application, in order to realize the cleaning of the sampling pipeline 20 alone, the sampling pipeline 20 and the return pipeline 30 can also be communicated through an adapter pipe, the first end of the adapter pipe is connected to the part of the sampling hose between the control valve K2 and the control valve K3, and the second end of the adapter pipe is connected to the part of the return pipe between the control valve S1 and the control valve S2.

[0049] As Figure 1 shown, the cleaning interface 12 and the vacuumizing interface 13 can be respectively located at the top end of the sampling tank 1, and the emptying port 14 and the filling port 15 can be respectively located at the bottom end of the sampling tank 1, and this design can make the sampling cavity 11 contain as much raw milk as possible during the sampling operation, and the raw milk in the sampling cavity 11 will not overflow from the cleaning interface 12 and the vacuumizing interface 13.

[0050] The sampling, filling and cleaning system shown in the utility model can suck the raw milk from the milk tank vehicle 3, store the raw milk into the sampling tank 1, and fill the raw milk into the sample bottle 100 through the filling port 15 of the sampling tank 1, so as to complete the sampling and filling of the raw milk; after the sampling is completed, the cleaning circuit composed of the sampling tank 1, the emptying pipeline 10, the collecting tank 2 and the return pipeline 30, and the cleaning circuit composed of the sampling tank 1, the sampling pipeline 20, the collecting tank 2 and the return pipeline 30 can be used to clean each pipeline with the cleaning liquid, so as to ensure the cleaning of the pipeline and facilitate the cleaning of the sampling path, thereby effectively preventing the sampling sample from being polluted.

[0051] As can be seen from the above, the sampling, filling and cleaning system shown in the utility model realizes the integrated design of sampling and cleaning, occupies a small space, improves the sampling and filling efficiency of the raw milk sample, facilitates the cleaning of the sampling path, and effectively prevents the sampling sample from being polluted.

[0052] In some embodiments, as shown in Figure 1 and Figure 3 To improve the sampling and filling efficiency of the raw milk sample, multiple sets of sampling and filling and cleaning systems can be provided, for example, two sets, which are arranged on the rack 5.

[0053] In some embodiments, as shown in Figure 1 and Figure 4 The sampling chamber 11 is provided with a rotating spray head 121, which is in communication with the cleaning interface 12.

[0054] It can be understood that the cleaning interface 12 is arranged at the top of the sampling tank 1 and located at the center of the sampling tank 1. Since the rotating spray head 121 is in communication with the cleaning interface 12, the rotating spray head 121 is also located at the center of the top wall of the sampling tank 1.

[0055] At the same time, the rotating spray head 121 rotates by the built-in rotating drive device without manual intervention. This design uses the rotation of the rotating spray head 121 to spray the cleaning liquid to the inner wall of the sampling tank 1, ensuring the cleaning effect of the sampling tank 1.

[0056] For example, the rotating spray head 121 can rotate 360º around the vertical axis. The rotating spray head 121 has a plurality of spray openings, some of which can be configured to be inclined downward, and some of which can be configured to be horizontal.

[0057] In some embodiments, as shown in Figure 6 and Figure 7 The emptying pipeline 10 includes a collection bucket 101, a main pipeline 102, a first branch pipeline 103, and a second branch pipeline 104. The collection bucket 101 is arranged at the lower side of the sampling tank 1 to collect the liquid discharged from the emptying port 14. The first end of the main pipeline 102 is in communication with the collection bucket 101, and the second end of the main pipeline 102 is in communication with the first end of the first branch pipeline 103 and the first end of the second branch pipeline 104, respectively.

[0058] The liquid collection tank 2 includes a waste liquid tank and a cleaning liquid tank. The second end of the first branch pipeline 103 is in communication with the waste liquid tank, and the second end of the second branch pipeline 104 is in communication with the cleaning liquid tank. The cleaning liquid tank is in communication with the cleaning interface 12 through the backflow pipeline 30.

[0059] It can be understood that the waste liquid tank is used to store the waste liquid discharged from the emptying port 14, and the cleaning liquid tank is used to store cleaning liquids such as clean water, acid liquid, and alkali liquid.

[0060] The second end of the main pipe 102 can be in communication with the first end of the first branch pipe 103 and the first end of the second branch pipe 104 through a first reversing valve. The first reversing valve can be a two-position three-way electromagnetic reversing valve.

[0061] In actual application, if the waste liquid discharge process needs to be performed, the first reversing valve can be switched to the first state to make the main pipe 102 and the first branch pipe 103 in communication; if the cleaning process needs to be performed, the first reversing valve can be switched to the second state to make the main pipe 102 and the second branch pipe in communication, at this time, the main pipe 102 and the second branch pipe 104 are in communication.

[0062] In some embodiments, the cleaning liquid pool includes at least one of a clean water pool, an acid liquid pool and an alkali liquid pool. Exemplarily, the cleaning liquid pool includes a first cleaning liquid pool and a second cleaning liquid pool, the first cleaning liquid pool is a clean water pool, and the second cleaning liquid pool is an acid liquid pool or an alkali liquid pool.

[0063] Correspondingly, the second branch pipe includes a branch main pipe, a first branch branch pipe and a second branch branch pipe, the second end of the main pipe 102 is in communication with the branch main pipe, the branch main pipe is in communication with the first branch branch pipe and the second branch branch pipe through a second reversing valve, the first branch branch pipe and the second branch branch pipe are in one-to-one correspondence with the first cleaning liquid pool and the second cleaning liquid pool, and the first cleaning liquid pool and the second cleaning liquid pool are in communication through a backflow pipe 30 and a cleaning interface 12 respectively.

[0064] The second reversing valve can be a two-position three-way electromagnetic reversing valve, and is used to control the branch main pipe to be selectively in communication with any one of the first branch branch pipe and the second branch branch pipe.

[0065] In some embodiments, as shown in Figure 3 and Figure 5 The sampling and filling and cleaning system further includes a milk receiving device 6, which includes a telescopic driving member 61 and a bracket 62. The telescopic driving member 61 and the bracket 62 are connected to drive the bracket 62 to be movably arranged between the sampling tank 1 and the collection hopper 101. The bracket 62 is used to support the sample bottle 100, and the sample bottle 100 is used to contain raw milk samples output from the filling port 15.

[0066] It can be understood that the telescopic driving member 61 can adopt a pneumatic cylinder or an electric push rod. The bracket 62 is movably mounted on a slide rail, and the telescopic end of the telescopic driving member 61 is connected with the bracket 62 to realize reciprocating movement of the bracket 62 along the extension direction of the slide rail.

[0067] When the raw milk needs to be filled, the telescopic driving member 61 drives the bracket 62 to move between the sampling tank 1 and the collecting hopper 101, so that the sample bottle 100 on the bracket 62 can hold the raw milk sample output from the filling port 15; after the filling of the raw milk sample is completed, the telescopic driving member 61 drives the bracket 62 to move away from the position between the sampling tank 1 and the collecting hopper 101, so that the mechanical arm picks up the sample bottle 100 on the bracket 62, and then moves the sample bottle 100 to the bottle filling station. After the bottle filling device of the bottle filling station fills a plurality of sample bottles 100 into the conveying bottle, the conveying bottle is conveyed to each detection station by using the pneumatic conveying line.

[0068] In some embodiments, as shown in Figure 5 The bracket 62 has a first region 621 and a second region 622. The first region 621 is provided with a first through hole 6211 and a positioning groove 6212 for placing the sample bottle 100. The second region 622 is provided with a second through hole 6221 and a splash-proof fence 6222 extending along the circumference of the second through hole 6221. The telescopic driving member 61 is used to drive the bracket 62 to move between the first position and the second position.

[0069] When the raw milk is filled, the telescopic driving member 61 drives the bracket 62 to be in the first position, at this time, the first region 621 is located between the sampling tank 1 and the collecting hopper 101, the emptying port 14 and the first through hole 6211 are oppositely arranged, and the filling port 15 and the positioning groove 6212 are oppositely arranged. Since the empty sample bottle 100 in the open state is placed in the positioning groove 6212, the discharge valve at the filling port 15 can be opened, and the raw milk output from the filling port 15 can be filled into the sample bottle 100.

[0070] Before or after the filling of the raw milk, the telescopic driving member 61 drives the bracket 62 to be in the second position, at this time, the second region 622 is located between the sampling tank 1 and the collecting hopper 101, and the emptying port 14 and the filling port 15 both extend to the second through hole 6221. Before the filling of the raw milk, the empty sample bottle 100 can be placed in the positioning groove 6212; after the filling of the raw milk is completed, the emptying valve K1 at the emptying port 14 can be opened, and the entire pipeline system can be cleaned.

[0071] The emptying port 14 and the filling port 15 are respectively located at the bottom end of the sampling tank 1. The positioning groove 6212 can be provided in plurality, and the plurality of positioning grooves 6212 are arranged around the first through hole 6211 and are configured to be oppositely arranged with the plurality of filling ports 15.

[0072] In some embodiments, as shown in Figure 2 and Figure 6As shown, the vacuumizing interface 13 is communicated with the negative pressure device 4 through a vacuumizing pipeline 40, and the vacuumizing pipeline 40 is provided with an air filter 41, and the part of the vacuumizing pipeline 40 between the air filter 41 and the negative pressure device 4 is provided with an air valve M1.

[0073] In order to accurately control the air pressure in the sampling cavity 11 during vacuumizing, the sampling tank 1 is provided with a pressure sensor 111, which is a gas pressure sensor, the detection end of the pressure sensor 111 extends into the sampling cavity 11 and is electrically connected with a control module, which can be a PLC controller or a single-chip microcomputer, and the control module is electrically connected with the negative pressure device 4; the pressure sensor 111 is used to collect the pressure information in the sampling cavity 11, and the control module is used to control the working state of the negative pressure device 4 according to the pressure information fed back by the pressure sensor 111.

[0074] In some embodiments, as shown in Figure 1 and Figure 6 As shown, the sampling filling and cleaning system further comprises a purging pipeline 50, the first end of the purging pipeline 50 is configured to be communicated with a blowing device, and the second end of the purging pipeline 50 is communicated with the cleaning interface 12.

[0075] Specifically, the purging pipeline 50 comprises a breather pipe and a control valve S3, the first end of the breather pipe is configured to be communicated with the blowing device, and the second end of the breather pipe is connected to the part of the backflow pipe between the control valve S1 and the control valve S2 through the control valve S3.

[0076] In the case that two sampling tanks 1 are provided, the second end of the breather pipe is communicated with two control valves S3 through a three-way valve T1 respectively, and each control valve S3 is connected to the part of the backflow pipe between the control valve S1 and the control valve S2 corresponding to each sampling tank 1.

[0077] For example, when it is needed to control the output of raw milk collected in the sampling tank 1, the compressed gas output by the blowing device flows through the breather pipe, and then sequentially passes through the three-way valve T1, the control valve S3 and the control valve S2, and then enters into the sampling cavity 11 through the cleaning interface 12, so as to drive the raw milk in the sampling cavity 11 to be output from the filling port 15.

[0078] For example, when it is needed to drive the waste liquid in the sampling tank 1 to be discharged or when it is needed to clean the sampling tank 1, the compressed gas output by the blowing device flows through the breather pipe, and then sequentially passes through the three-way valve T1, the control valve S3 and the control valve S2, and then enters into the sampling cavity 11 through the cleaning interface 12, so as to drive the waste liquid or cleaning liquid in the sampling cavity 11 to be discharged from the emptying port 14.

[0079] Finally, it should be noted that: the above examples are used to illustrate the technical solutions of the present application, but not limited to; although the present application is described in detail with reference to the foregoing examples, those skilled in the art should understand that: it can still be modified to the technical solutions recorded in the foregoing examples, or part of the technical features are replaced; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A sampling, filling and cleaning system, characterized in that, The application relates to a milk sampling device. The device comprises a sampling tank, a liquid collecting pool, an emptying pipeline, a sampling pipeline and a backflow pipeline. The sampling tank is provided with a sampling cavity, a cleaning interface, a vacuumizing interface, an emptying port and a filling port which are communicated with the sampling cavity; the liquid collecting pool is used for containing cleaning liquid and waste liquid discharged from the emptying port; The emptying port is communicated with the liquid collecting pool through the emptying pipeline, and the liquid collecting pool is communicated with the cleaning interface through the backflow pipeline; the emptying port is also communicated with the first end of the sampling pipeline, and the second end of the sampling pipeline is configured to move under the driving of a sampling trolley to extend to a milk tank trolley or the liquid collecting pool; the vacuumizing interface is configured to be communicated with a negative pressure equipment.

2. The sampling, filling and cleaning system of claim 1, wherein, A rotary nozzle is arranged in the sampling cavity, and the rotary nozzle is communicated with the cleaning interface.

3. The sampling, filling and cleaning system of claim 1, wherein, The emptying pipeline comprises a collecting hopper, a main pipeline, a first branch pipeline and a second branch pipeline; The collecting hopper is arranged on the lower side of the sampling tank to collect liquid discharged from the emptying port; the first end of the main pipeline is communicated with the collecting hopper, and the second end of the main pipeline is communicated with the first end of the first branch pipeline and the first end of the second branch pipeline respectively; The liquid collecting pool comprises a waste liquid pool and a cleaning liquid pool; the second end of the first branch pipeline is communicated with the waste liquid pool, and the second end of the second branch pipeline is communicated with the cleaning liquid pool; the cleaning liquid pool is communicated with the cleaning interface through the backflow pipeline.

4. The sampling, filling and cleaning system of claim 3, wherein, The cleaning liquid pool comprises at least one of a clean water pool, an acid liquid pool and an alkali liquid pool.

5. The sampling, filling and cleaning system of claim 3, wherein, The device further comprises a milk receiving device which comprises a telescopic driving member and a bracket; The telescopic driving member is connected with the bracket to drive the bracket to be movably arranged between the sampling tank and the collecting hopper; the bracket is used for supporting sample bottles which are used for containing raw milk samples output from the filling port. The bracket is provided with a first region and a second region; the first region is provided with a first through hole and a positioning groove used for placing the sample bottles; the second region is provided with a second through hole and a splash-proof fence which is arranged along the circumference of the second through hole; 6. The sampling, filling and cleaning system of claim 5, wherein, The telescopic driving member is used for driving the bracket to move between a first position and a second position; when the bracket is in the first position, the first region is located between the sampling tank and the collecting hopper, the emptying port and the first through hole are oppositely arranged, and the filling port and the positioning groove are oppositely arranged; when the bracket is in the second position, the second region is located between the sampling tank and the collecting hopper, and the emptying port and the filling port both extend to the second through hole. The cleaning interface and the vacuumizing interface are respectively arranged at the top end of the sampling tank, and the emptying port and the filling port are respectively arranged at the bottom end of the sampling tank.

7. The sampling, filling and cleaning system according to any one of claims 1 to 6, characterized in that The vacuumizing interface is communicated with the negative pressure equipment through a vacuumizing pipeline, and an air filter is arranged on the vacuumizing pipeline.

8. The sampling, filling and cleaning system according to any one of claims 1 to 6, characterized in that The sampling tank is provided with a pressure sensor which extends into the sampling cavity and is electrically connected with a control module; the control module is electrically connected with the negative pressure equipment.

9. The sampling, filling and cleaning system of claim 8, wherein, ​ The pressure sensor is configured to collect pressure information in the sampling cavity, and the control module is configured to control a working state of the negative pressure device according to the pressure information fed back by the pressure sensor.

10. The sampling, filling and cleaning system according to any one of claims 1 to 6, characterized in that Further comprising: A purge pipeline, a first end of the purge pipeline is configured to communicate with the air blowing device, and a second end of the purge pipeline communicates with the cleaning interface.

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