Sample extraction device of milk storage tank

Abstract

The utility model provides a sample extraction device of a milk storage tank, which relates to the technical field of sample extraction devices and comprises a tank cover, a support is fixedly mounted on the surface of the tank cover, a motor is fixedly mounted on the surface of the support, and a lead screw is fixedly mounted at the output end of the motor. By arranging a tank cover, a support, a motor, a lead screw, a moving plate, a cylinder, a liquid guide pipe, a negative pressure pipe, a pull plug, a liquid discharge pipe, a sampling port and a sample storage pipe, when a milk sample in a storage tank is extracted, the motor is used for adjusting the height of the moving plate, a pressing rod is pulled backwards with a hand, and the negative pressure pipe can increase the pressure to extract milk from the storage tank; milk enters the liquid discharge pipe along the liquid guide pipe and finally flows into the sample storage pipe, so that personnel can be prevented from making contact with the interior of the storage tank, milk pollution is avoided, the personnel can conveniently take out the sample storage pipe through threaded connection, meanwhile, the sample storage pipe can be conveniently replaced, and the sample extraction efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sample extraction devices, in particular to a sample extraction device for a milk storage tank. Background Art

[0002] A milk transport tank is a transport tool. A tank of milk will be transported to different distributors during the transportation process. Fresh milk is supplied on the same day in real time. Distributors need to sample and test the milk sold to themselves. During the process of milk flowing from the transport tank into the distributor's container, multiple tubes need to be sampled regularly throughout the entire time period, so as to conduct quality inspections on the milk injected in each time period. However, the current methods for collecting milk samples vary, and the collection of milk samples is messy and inaccurate. If sampling and testing of the milk liquid are to be carried out, some are still traditional manual collection, which is time-consuming and laborious, and is very likely to contaminate the milk inside the milk pipeline and needs to be improved. Content of the Utility Model

[0003] The purpose of the utility model is to solve the technical problems put forward in the above background art.

[0004] The utility model adopts the following technical scheme: A sample extraction device for a milk storage tank, including a tank cover. A bracket is fixedly installed on the surface of the tank cover. A motor is fixedly installed on the surface of the bracket. A lead screw is fixedly installed at the output end of the motor. A moving plate is threadedly connected to the surface of the lead screw. A cylinder is fixedly installed on the surface of the moving plate. A liquid guide pipe is fixedly installed on the surface of the cylinder. A negative pressure pipe is fixedly installed on the surface of the cylinder. A pull rod is slidably connected inside the negative pressure pipe. A liquid discharge pipe is fixedly installed on the surface of the liquid guide pipe. A sample storage pipe is threadedly connected to the surface of the liquid discharge pipe. A liquid extraction pipe is fixedly installed on the surface of the liquid guide pipe. A sampling port is opened on the surface of the tank cover.

[0005] Preferably, a limit block is fixedly installed on the surface of the liquid guide pipe, and the limit block is directly above the sampling port. Here, when extracting samples of the milk in the storage tank, it is necessary to rotate and open the cover plate, and then put the liquid extraction pipe into the storage tank. At this time, the limit plate can block the sampling port to prevent dust from entering the storage tank and contaminating the milk.

[0006] Preferably, the liquid discharge pipe and the sample storage pipe are threadedly connected. Here, using threaded connection can facilitate the personnel to take out the sample storage pipe and also facilitate the replacement of the sample storage pipe, thereby improving the efficiency of sample extraction.

[0007] Preferably, the lead screw is located inside the bracket, and the moving plate slides on the surface of the bracket. Here, the lead screw inside the bracket can avoid being damaged by collision, improving the service life of the lead screw. When the moving plate moves up and down, the bracket can limit the moving plate to prevent it from tilting.

[0008] Preferably, the negative pressure tube is located at the upper end of the liquid discharge tube. Here, when extracting a sample, the pressure lever needs to be pulled backward by hand, and the negative pressure tube will increase the pressure to draw the milk out of the storage tank. The milk enters the liquid discharge tube along the liquid guide tube and finally flows into the sample storage tube.

[0009] Preferably, a fixing column is fixedly installed on the surface of the tank cover, a cover plate is rotatably connected to the surface of the fixing column, and a sealing ring is fixedly installed at the bottom end of the cover plate. Here, before extracting a sample, the cover plate needs to be rotated to expose the sampling port. When not in use, the cover plate can effectively isolate the dust in the air outside the storage tank, preventing dust from entering the storage tank and contaminating the milk. The sealing ring can increase the airtightness of the cover plate.

[0010] Preferably, the cover plate rotates on the surface of the tank cover, and the diameter of the cover plate is larger than the diameter of the sampling port. Here, the diameter of the cover plate is larger than the diameter of the sampling port, so that the sampling port can be completely covered. The rotatably connected cover plate facilitates sampling.

[0011] Compared with the prior art, the advantages and positive effects of the present utility model are as follows:

[0012] 1. In the present utility model, by setting up the structures of the tank cover, bracket, motor, lead screw, moving plate, cylinder, liquid guide tube, negative pressure tube, pull bolt, liquid discharge tube, sampling port, and sample storage tube, when extracting a sample from the milk in the storage tank, first use the motor to adjust the height of the moving plate, and pull the pressure lever backward by hand. The negative pressure tube will increase the pressure to draw the milk out of the storage tank. The milk enters the liquid discharge tube along the liquid guide tube and finally flows into the sample storage tube. This can prevent personnel from contacting the inside of the storage tank and avoid milk contamination. Using threaded connection can facilitate personnel to take out the sample storage tube and also facilitate replacing the sample storage tube, thereby improving the efficiency of sample extraction.

[0013] 2. In the present utility model, by providing a limit block, a fixing column, a cover plate, and a sealing ring structure, when extracting a milk sample from the storage tank, the cover plate needs to be rotated and opened, and then the liquid extraction tube is placed into the storage tank. At this time, the limit plate can block the sampling port to prevent dust from entering the storage tank and contaminating the milk. Before extracting the sample, the cover plate needs to be rotated to expose the sampling port. When not in use, the cover plate can effectively isolate the dust in the air outside the storage tank to prevent dust from entering the storage tank and contaminating the milk. The sealing ring can increase the airtightness of the cover plate. The diameter of the cover plate is larger than that of the sampling port, so that the sampling port can be completely covered. The rotatably connected cover plate facilitates sampling. Description of the Drawings

[0014] Figure 1 Schematic diagram of a milk storage tank sample extraction device proposed by the present utility model;

[0015] Figure 2 Overall schematic diagram of a milk storage tank sample extraction device proposed by the present utility model;

[0016] Figure 3 Schematic diagram of the cylinder of a milk storage tank sample extraction device proposed by the present utility model.

[0017] Legend Explanation:

[0018] 1. Tank cover; 2. Bracket; 3. Motor; 4. Lead screw; 5. Moving plate; 6. Cylinder; 7. Liquid guide tube; 8. Negative pressure tube; 9. Pull rod; 10. Liquid discharge tube; 11. Sampling port; 12. Sample storage tube; 13. Limit block; 14. Liquid extraction tube; 15. Fixing column; 16. Cover plate; 17. Sealing ring. Detailed Embodiment

[0019] In order to more clearly understand the above-mentioned objects, features, and advantages of the present utility model, the following further describes the present utility model with reference to the drawings and embodiments. It should be noted that, without conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

[0020] In the following description, many specific details are set forth to fully understand the present utility model. However, the present utility model can also be implemented in other ways different from those described herein. Therefore, the present utility model is not limited by the specific embodiments disclosed in the following specification.

[0021] Embodiment 1

[0022] Please refer to Figures 1-3, the present utility model provides a technical solution: a sample extraction device for a milk storage tank, including a tank cover 1, a bracket 2 is fixedly installed on the surface of the tank cover 1, a motor 3 is fixedly installed on the surface of the bracket 2, a lead screw 4 is fixedly installed at the output end of the motor 3, a moving plate 5 is threadedly connected to the surface of the lead screw 4, a cylinder 6 is fixedly installed on the surface of the moving plate 5, a liquid guide pipe 7 is fixedly installed on the surface of the cylinder 6, a negative pressure pipe 8 is fixedly installed on the surface of the cylinder 6, a pull rod 9 is slidably connected inside the negative pressure pipe 8, a liquid discharge pipe 10 is fixedly installed on the surface of the liquid guide pipe 7, a sample storage pipe 12 is threadedly connected to the surface of the liquid discharge pipe 10, a liquid extraction pipe 14 is fixedly installed on the surface of the liquid guide pipe 7, a sampling port 11 is opened on the surface of the tank cover 1, a limiting block 13 is fixedly installed on the surface of the liquid guide pipe 7, and the limiting block 13 is located directly above the sampling port 11. When extracting a milk sample from the storage tank, it is necessary to rotate the cover plate 16 to open it, and then put the liquid extraction pipe 14 into the storage tank. At this time, the limiting plate can block the sampling port 11 to prevent dust from entering the storage tank and contaminating the milk. The liquid discharge pipe 10 and the sample storage pipe 12 are threadedly connected. Using threaded connection can facilitate the personnel to take out the sample storage pipe 12 and also facilitate the replacement of the sample storage pipe 12, thereby improving the efficiency of sample extraction. The lead screw 4 is located inside the bracket 2, and the moving plate 5 slides on the surface of the bracket 2. The lead screw 4 being inside the bracket 2 can prevent the lead screw 4 from being damaged by collision and improve the service life of the lead screw 4. When the moving plate 5 moves up and down, the bracket 2 can limit the moving plate 5 to prevent the moving plate 5 from tilting. The negative pressure pipe 8 is located at the upper end of the liquid discharge pipe 10. When extracting a sample, it is necessary to pull the pressure rod backward by hand, and the negative pressure pipe 8 will increase the pressure to pump the milk out of the storage tank. The milk flows along the liquid guide pipe 7 into the liquid discharge pipe 10 and finally flows into the sample storage pipe 12.

[0023] Embodiment 2

[0024] Please refer to Figure 3 , a fixing column 15 is fixedly installed on the surface of the tank cover 1, a cover plate 16 is rotatably connected to the surface of the fixing column 15, and a sealing ring 17 is fixedly installed at the bottom end of the cover plate 16. Before extracting a sample, it is necessary to rotate the cover plate 16 to expose the sampling port 11. When not in use, the cover plate 16 can effectively isolate the dust in the air outside the storage tank and prevent dust from entering the storage tank and contaminating the milk. The sealing ring 17 can increase the airtightness of the cover plate 16. The cover plate 16 rotates on the surface of the tank cover 1, and the diameter of the cover plate 16 is larger than the diameter of the sampling port 11. The diameter of the cover plate 16 being larger than the diameter of the sampling port 11 can completely cover the sampling port 11, and the rotatably connected cover plate 16 facilitates sampling.

[0025] Working principle: When in use, first rotate the cover plate 16 to expose the sampling port 11. Then turn on the motor 3, and the motor 3 drives the screw rod 4 to rotate, causing the moving plate 5 to move on the surface of the bracket 2. The screw rod 4 is inside the bracket 2, which can prevent the screw rod 4 from being damaged by collision and improve the service life of the screw rod 4. When the moving plate 5 moves up and down, the bracket 2 can limit the position of the moving plate 5 to prevent the moving plate 5 from tilting. When the limit block 13 just fits with the tank cover 1, the liquid extraction pipe 14 touches the milk. Then thread the sample storage pipe 12 onto the liquid discharge pipe 10. Using threaded connection can facilitate the personnel to take out the sample storage pipe 12 and also facilitate the replacement of the sample storage pipe 12, thereby improving the efficiency of sample extraction. Pull the pressure lever backward by hand, and the negative pressure pipe 8 will increase the pressure to pump the milk out of the storage tank. The milk enters the liquid discharge pipe 10 along the liquid guide pipe 7 and finally flows into the sample storage pipe 12. Before extracting the sample, it is necessary to rotate the cover plate 16 to expose the sampling port 11. When not in use, the cover plate 16 can effectively isolate the dust in the air outside the storage tank, preventing the dust from entering the storage tank and contaminating the milk. The sealing ring 17 can increase the airtightness of the cover plate 16. The diameter of the cover plate 16 is larger than that of the sampling port 11, so that the sampling port 11 can be completely covered. The rotatably connected cover plate 16 facilitates sampling.

[0026] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention in other forms. Any person skilled in the art may use the disclosed technical content to make changes or modifications into equivalent embodiments with equivalent changes and apply them to other fields. However, as long as it does not depart from the technical solution content of the present invention, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention still fall within the protection scope of the technical solution of the present invention.

Claims

1. A sample extraction device for a milk storage tank, comprising a tank cover (1), characterized in that: A bracket (2) is fixedly mounted on the surface of the tank cover (1), a motor (3) is fixedly mounted on the surface of the bracket (2), a screw (4) is fixedly mounted on the output end of the motor (3), a movable plate (5) is threadedly connected to the surface of the screw (4), a cylinder (6) is fixedly mounted on the surface of the movable plate (5), a liquid guide tube (7) is fixedly mounted on the surface of the cylinder (6), a negative pressure tube (8) is fixedly mounted on the surface of the cylinder (6), a pull rod (9) is slidably connected to the inside of the negative pressure tube (8), a liquid discharge tube (10) is fixedly mounted on the surface of the liquid discharge tube (10), a sample storage tube (12) is threadedly connected to the surface of the liquid guide tube (7), a liquid collection tube (14) is fixedly mounted on the surface of the liquid guide tube (7), and a sampling port (11) is provided on the surface of the tank cover (1).

2. The sample extraction device for a milk storage tank according to claim 1, characterized in that: A limit block (13) is fixedly mounted on the surface of the liquid guiding tube (7), and the limit block (13) is located directly above the sampling port (11).

3. The sample extraction device for a milk storage tank according to claim 1, characterized in that: The liquid discharge tube (10) and the sample storage tube (12) are connected via threads.

4. The sample extraction device for a milk storage tank according to claim 1, characterized in that: The screw rod (4) is located inside the bracket (2), and the movable plate (5) slides on the surface of the bracket (2).

5. The sample extraction device for a milk storage tank according to claim 1, characterized in that: The negative pressure pipe (8) is located at the upper end of the liquid discharge pipe (10).

6. The sample extraction device for a milk storage tank according to claim 1, characterized in that: A fixing column (15) is fixedly mounted on the surface of the tank cover (1), a cover plate (16) is rotatably connected to the surface of the fixing column (15), and a sealing ring (17) is fixedly mounted on the bottom end of the cover plate (16).

7. The sample extraction device for a milk storage tank according to claim 1, characterized in that: The cover plate (16) rotates on the surface of the tank cover (1), and the diameter of the cover plate (16) is greater than the diameter of the sampling port (11).

Images