Impurity filtering device for liquid milk detection

Abstract

The utility model provides an impurity filtering device for liquid milk detection, which belongs to the technical field of dairy product production and comprises a filtering bin and a liquid outlet bin, a filtering net cylinder is arranged in the filtering bin, and an annular gap is reserved between the filtering net cylinder and the filtering bin; a pressurizing pipe, a feeding pipe and a pressure relief pipe are arranged at the top of the filtering bin; a liquid receiving bin communicates with the lower portion of the filter screen cylinder and is in sealed connection with the supporting plate, a liquid discharging pipe is connected to the center of the bottom of the liquid receiving bin, and an elastic component is arranged below the liquid discharging pipe; a liquid outlet pipe is arranged at the lower part of the liquid outlet bin; an electric push rod penetrating through the filtering bin is further arranged at the top of the filtering bin, an output rod of the electric push rod is connected with a cleaning annular plate arranged on the outer side of the filtering net cylinder in a sleeving mode, and bristles abutting against the outer wall of the filtering net cylinder are evenly distributed on the inner wall of the cleaning annular plate; a sewage outlet is formed in the lower part of the filtering bin. The device is high in filtering efficiency and good in filtering effect, impurities can be cleaned in time, the cleaning efficiency is high, the filter screen is not prone to being blocked, and the production efficiency and the detection precision of dairy products are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of dairy product production, in particular to an impurity filtering device for liquid milk detection. Background Art

[0002] With the progress of society, people's living standards are getting higher and higher. Since dairy products can effectively enhance physical fitness, the demand for dairy products is also increasing. In the production process of many kinds of dairy products, and before various tests of liquid milk, it is inseparable from the process of filtering impurities from liquid milk to make the liquid milk purer, which can maximize the quality and value of liquid milk, and prevent impurities from clogging the testing equipment or affecting the accuracy and precision of the test results. Impurities in liquid milk mainly refer to foreign matter such as grass, sand and dust brought into liquid dairy products during production and transportation.

[0003] However, in actual use, the existing impurity filtering device has low filtering efficiency due to the absence of pressure difference on both sides of the filter, which reduces the production speed of dairy products and has poor filtering effect. After filtering impurities, impurities will remain on the surface of the filter, which will clog the filter over time, affecting the normal filtering work and shortening the service life of the filter. Therefore, the filter needs to be cleaned in time, but the existing filtering device often does not have a structure for cleaning the filter, and the staff needs to manually disassemble and clean the surface of the filter, which is time-consuming and has low efficiency in cleaning the filter, which reduces the filtering efficiency of liquid milk and the production efficiency of dairy products, and needs to be improved urgently. Utility Model Content

[0004] The utility model provides an impurity filtering device for liquid milk detection, which is used to solve the problems of low filtering efficiency, poor filtering effect, easy clogging of filter screen by residual impurities, inconvenient cleaning of filter screen and low efficiency of existing devices.

[0005] The utility model provides an impurity filtering device for liquid milk detection, comprising: a filter chamber and a liquid outlet chamber which are sealed and connected, the filter chamber is placed above the liquid outlet chamber, and the filter chamber and the liquid outlet chamber are separated into two independent chambers by a support plate; a filter screen cylinder is arranged at the center of the filter chamber, an annular gap is arranged between the filter screen cylinder and the inner wall of the filter chamber, and the width of the annular gap does not exceed the radius of the filter screen cylinder.

[0006] Preferably, a boost pipe, a feed pipe and a pressure relief pipe are provided on the top of the filter bin, the feed pipe and the boost pipe are arranged above the annular gap, and the pressure relief pipe is arranged above the filter screen cylinder; an inverted cone-shaped liquid receiving bin is connected to the bottom of the filter screen cylinder, the liquid receiving bin is sealed with the support plate, and is located inside the liquid outlet bin; a lower liquid pipe is connected to the bottom center of the liquid receiving bin, an elastic component is provided below the lower liquid pipe, and the lower liquid pipe connects the filter screen cylinder, the liquid receiving bin and the liquid outlet bin through the elastic component; a liquid outlet pipe is provided on one side of the lower part of the liquid outlet bin, and the liquid outlet pipe is connected to the detection device through a pipeline.

[0007] Preferably, a cleaning component is also provided in the filter bin, and the cleaning component includes an electric push rod which is provided on the top of the filter bin and passes through the filter bin, and the output rod of the electric push rod is connected to a cleaning ring plate which is sleeved on the outside of the filter mesh cylinder, and the inner wall of the cleaning ring plate is evenly distributed with bristles, and the bristles abut against the outer wall of the filter mesh cylinder; a sewage outlet is provided on one side of the lower part of the filter bin.

[0008] Preferably, the elastic component includes a limit plate arranged at the bottom of the downpipe, a spring is fixedly connected to the limit plate, a sealing block is fixedly connected to the other end of the spring, and a sliding seal is formed between the sealing block and the inner wall of the downpipe; when the spring is in a naturally extended state, a plurality of liquid outlet holes are evenly arranged on the side wall of the downpipe located in the middle of the sealing block.

[0009] Preferably, a support ring is fixedly connected to the bottom of the filter screen cylinder, and the support ring is screwed to the support plate.

[0010] Preferably, a circle of scrapers is connected to the top of the cleaning ring plate, and one side of the scrapers abuts against the outer wall of the filter screen cylinder.

[0011] Preferably, an annular diversion pipe is connected above the cleaning ring plate through multiple support bars, and a plurality of nozzles are evenly distributed on the diversion pipe facing the outer wall of the filter mesh cylinder; a coil spring tube is connected to the side of the diversion pipe close to the output rod of the electric push rod, and the coil spring tube extends to the outside of the top of the filter bin and is connected to the water pump through a pipe.

[0012] Preferably, an exhaust port is provided on one side of the upper portion of the liquid outlet bin, and the exhaust port is connected to a vacuum pump.

[0013] Preferably, the exhaust port is arranged above the liquid outlet hole of the lower liquid pipe.

[0014] Preferably, the bottom of the liquid outlet bin is inclined, and the inclined lower end is located on a side close to the liquid outlet pipe.

[0015] The impurity filtering device for detecting liquid milk provided by the utility model forms a significant pressure difference between the filtering bin and the liquid outlet bin through the cooperation of the boosting pipe and the elastic component and the exhaust port of the liquid outlet bin and the vacuum pump, thereby ensuring that the high-pressure gas squeezes the liquid milk and filters it through the filter cylinder, thereby accelerating the filtration rate, avoiding the accumulation of the filtered liquid milk in the liquid receiving bin, improving the filtration effect, achieving stable and efficient filtration of impurities in the liquid milk, and improving the detection precision and accuracy of the liquid milk.

[0016] The device also automatically cleans the outer wall of the filter cylinder online through the cooperation of the electric push rod, the cleaning ring plate and the bristles thereon. The cleaning effect is good, the filter is not easily blocked, the cleaning efficiency is improved, the workload and frequency of manual cleaning are reduced, the labor intensity of manual cleaning is reduced, and the cleaning time is saved, ensuring long-term and continuous operation of the entire device, thereby improving the filtration efficiency of liquid milk, making the device have the characteristics of good filtration effect and long service life of the filter cylinder, thereby improving the production efficiency of dairy products. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 A schematic diagram of the structure of an impurity filtering device for liquid milk detection provided by one embodiment of the utility model;

[0019] Figure 2 for Figure 1 An enlarged schematic diagram of point A (i.e., the elastic component);

[0020] Figure 3 This is a schematic structural diagram of a cleaning component provided in one embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 1-filter bin, 2-liquid outlet bin, 3-support plate, 4-filter screen cylinder, 5-annular gap, 6-liquid receiving bin, 11-boosting pipe, 12-feeding pipe, 13-pressure relief pipe, 14-sewage outlet, 21-liquid outlet pipe, 22-exhaust port, 41-support ring, 61-lower liquid pipe, 62-limiting plate, 63-spring, 64-sealing block, 65-liquid outlet hole, 71-electric push rod, 72-cleaning ring plate, 73-scraper, 74-diverter pipe, 75-spray nozzle, 76-support bar, 77-helical spring tube. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model is described clearly and completely below. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work also fall within the scope of protection of the utility model.

[0024] like Figure 1 The utility model provides an impurity filtering device for liquid milk detection, comprising: a sealed filter chamber 1 and a liquid outlet chamber 2, the filter chamber 1 is placed above the liquid outlet chamber 2, and the filter chamber 1 and the liquid outlet chamber 2 are separated into two independent chambers by a support plate 3; a filter screen cylinder 4 is arranged at the center of the filter chamber 1, and an annular gap 5 is arranged between the filter screen cylinder 4 and the inner wall of the filter chamber 1, and the width of the annular gap 5 does not exceed the radius of the filter screen cylinder 4. The filter screen cylinder 4 is made of a filter screen in one piece, and the aperture of the filter screen cylinder 4 is selected and designed according to production requirements or detection requirements. The bottom of the filter screen cylinder 4 is fixed to the support plate 3, and its top can be connected to the top of the filter chamber 1 or not. However, during the filtering period, the liquid level of the liquid milk in the filter chamber 1 is not higher than the highest point of the filter screen cylinder 4, so as to avoid the situation that the impurity filtering is incomplete and affects the detection accuracy. At the same time, the vertically arranged filter screen cylinder 4 can more likely avoid the accumulation of impurities on the surface of the filter screen cylinder 4, thereby extending the service life and maintenance cycle of the filter screen cylinder 4.

[0025] like Figure 1 Preferably, a boost pipe 11, a feed pipe 12 and a pressure relief pipe 13 are provided on the top of the filter bin 1, the feed pipe 12 and the boost pipe 11 are arranged above the annular gap 5, and the pressure relief pipe 13 is arranged above the filter screen cylinder 4; an inverted cone-shaped liquid receiving bin 6 is connected to the bottom of the filter screen cylinder 4, the liquid receiving bin 6 is sealed with the support plate 3, and is located inside the liquid outlet bin 2; a lower liquid pipe 61 is connected to the bottom center of the liquid receiving bin 6, an elastic component is provided below the lower liquid pipe 61, and the lower liquid pipe 61 connects the filter screen cylinder 4, the liquid receiving bin 6 and the liquid outlet bin 2 through the elastic component; a liquid outlet pipe 21 is provided on one side of the lower part of the liquid outlet bin 2, and the liquid outlet pipe 21 is connected to the detection device (not shown in the drawings) through a pipeline.

[0026] The feed pipe 12 is used to feed the liquid milk containing impurities to be tested into the filter chamber 1. The feed pipe 12 directly feeds the liquid milk into the annular gap 5 to facilitate subsequent filtration. The booster pipe 11 can be connected to a booster pump, or to a mechanism that can be used for pressurization and boosting, such as a nitrogen pipe network. After the filter chamber 1 is pressurized, under the action of the pressure difference, impurities are intercepted on the outside of the filter screen cylinder 4, while the purer liquid milk enters the inside of the filter screen cylinder 4 and flows into the liquid outlet chamber 2, and finally enters the detection device for detection. The pressure relief pipe 13 is used to relieve the pressure of the filter chamber 1 to facilitate disassembly, feeding and other operations.

[0027] like Figure 3 Preferably, the filter chamber 1 is also provided with a cleaning component, which includes an electric push rod 71 penetrating the filter chamber 1 at the top of the filter chamber 1, an output rod of the electric push rod 71 connected to a cleaning ring plate 72 sleeved on the outside of the filter screen cylinder 4, and bristles (not shown in the drawings) are evenly distributed on the inner wall of the cleaning ring plate 72, and the bristles abut against the outer wall of the filter screen cylinder 4; a sewage outlet 14 is provided on one side of the lower part of the filter chamber 1. The output rod of the electric push rod 71 can be extended and retracted up and down according to the cleaning needs, driving the cleaning ring plate 72 and the bristles thereon to move up and down, and in the process of the movement of the bristles, the outer wall of the filter screen cylinder 4 is cleaned, and the cleaning water can also be introduced from the feed pipe 12 to clean the entire filter chamber 1 by switching the pipeline valve, and finally the impurities and dirt cleaned are discharged from the filter chamber 1 through the sewage outlet 14, thereby completing the online automatic cleaning of the filter screen cylinder 4, with good cleaning effect, reducing the workload and frequency of manual cleaning, reducing the labor intensity of manual cleaning, saving cleaning time, and improving cleaning efficiency.

[0028] When the impurity filtering device for detecting liquid milk of the utility model is used, the liquid milk is fed into the annular gap 5 through the feed pipe 12, and then the pressure is increased through the pressure increasing pipe 11. Through the barrier effect of the elastic component, a significant pressure difference is formed between the filter chamber 1 and the liquid outlet chamber 2. The liquid milk is pressed from the annular gap 5 to the inside of the filter screen cylinder 4, and flows into the liquid outlet chamber 2 from the liquid receiving chamber 6 and the lower liquid pipe 61. The impurities are intercepted on the outside of the filter screen cylinder 4. By forming a significant pressure difference in the filter chamber 1, the filtering rate and filtering effect can be significantly improved. The liquid milk after impurity removal is finally sent to the detection device through the liquid outlet chamber 2 and the liquid outlet pipe 21 for detection. Due to the improved filtering effect, the detection accuracy is also improved. After running for a period of time, the filter screen cylinder 4 needs to be automatically cleaned. The output rod of the electric push rod 71 is extended and retracted up and down to drive the cleaning ring plate 72 and the bristles thereon to move up and down. During the movement of the bristles, the outer wall of the filter screen cylinder 4 is cleaned. Finally, the cleaned impurities and dirt are discharged from the filter bin 1 through the sewage outlet 14, thereby ensuring the cleanliness of the filter screen cylinder 4 and helping to extend the service life of the filter screen cylinder 4.

[0029] like Figure 2 Preferably, the elastic component includes a limit plate 62 arranged at the bottom of the lower liquid pipe 61, a spring 63 is fixedly connected to the limit plate 62, a sealing block 64 is fixedly connected to the other end of the spring 63, and a sliding seal is formed between the sealing block 64 and the inner wall of the lower liquid pipe 61; when the spring 63 is naturally extended, a plurality of liquid outlet holes 65 are evenly opened on the side wall of the lower liquid pipe 61 located in the middle of the sealing block 64. The height of the sealing block 64 should be greater than the aperture of the liquid outlet hole 65 to prevent the sealing block 64 from sliding away from the lower liquid pipe 61. The liquid outlet hole 65 can be arranged in the middle or lower part of the sealing block 64, and compared with being arranged in the lower part of the sealing block 64, being arranged in the middle part can achieve high-efficiency filtration under a relatively small pressure difference, and the energy consumption of the booster pipe is smaller, saving the filtration cost. The elastic component can enhance the sealing effect of the filter chamber 1 and improve the pressurization efficiency when the filter chamber 1 is pressurized. When the pressure in the filter chamber 1 reaches the set value or the pressure difference between the filter chamber 1 and the liquid outlet chamber 2 reaches the set value, the air pressure pushes the liquid milk to be filtered, and at the same time, it also pushes the sealing block 64 downward, so that the liquid outlet hole 65 can be connected with the filter chamber 1, so that the filter chamber 1 and the liquid outlet chamber 2 are connected through the liquid outlet hole 65, and the filtered pure liquid milk can enter the liquid outlet chamber 2. When it is necessary to feed or clean the filter screen cylinder 4, the filter chamber 1 is depressurized through the pressure relief pipe 13, and the vacuum pump is stopped, so that the sealing block 64 can restore its sealing and blocking state under the action of the spring 63.

[0030] In order to facilitate the installation and removal of the filter screen cartridge 4, Figure 1 Preferably, a support ring 41 is fixed to the bottom of the filter screen cartridge 4, and the support ring 41 is screwed to the support plate 3. By using the support ring 41 that can be screwed to the support plate 3, the filter screen cartridge 4 can be disassembled in time, so that it can be cleaned more thoroughly.

[0031] like Figure 3 Preferably, a scraper blade 73 is connected to the top of the cleaning ring plate 72, and one side of the scraper blade 73 abuts against the outer wall of the filter screen cylinder 4. The scraper blade 73 is harder than the bristles, and the scraper blade 73 moves up and down along with the output rod of the electric push rod 71 and the cleaning ring plate 72, which can further clean the relatively firm impurities adhered to the outer wall of the filter screen cylinder 4, further improving the cleaning effect.

[0032] like Figure 3Preferably, a circular shunt pipe 74 is connected to the top of the cleaning ring plate 72 through a plurality of support bars 76, and a plurality of nozzles 75 facing the outer wall of the filter screen cylinder 4 are evenly distributed on the shunt pipe 74; a spiral spring pipe 77 is connected to the side of the shunt pipe 74 close to the output rod of the electric push rod 71, and the spiral spring pipe 77 extends to the outside of the top of the filter bin 1 and is connected to the water pump (not shown in the drawings) through a pipeline. The spiral spring pipe 77 is sealed and connected to the filter bin 1, and the water pump pumps the cleaning water into the spiral spring pipe 77. When the spiral spring pipe 77 moves up and down with the output rod of the electric push rod 71, the cleaning water is sprayed from the nozzle 75, which can clean the filter screen cylinder 4, making the cleaning of the filter screen cylinder 4 more thorough and ensuring a better cleaning effect. The spiral spring pipe 77 is retractable. When the output rod of the electric push rod 71 shrinks to the top of the filter bin 1, it can automatically return to the spiral coil style, which is convenient to use and does not take up too much space.

[0033] like Figure 1 Preferably, an exhaust port 22 is provided on one side of the upper portion of the liquid outlet bin 2, and the exhaust port 22 is connected to a vacuum pump (not shown in the drawings). The vacuum pump can form a negative pressure in the liquid outlet bin 2, increase the pressure difference between the filtering bin 1 and the liquid outlet bin 2, thereby accelerating the filtering speed of the liquid milk, and preventing the filtered liquid milk from gathering in the liquid receiving bin 6, thereby improving the filtering efficiency.

[0034] Preferably, the exhaust port 22 is arranged above the liquid outlet hole 65 of the lower liquid pipe 61. The exhaust port 22 is arranged at a higher position to prevent the liquid milk flowing out of the lower liquid pipe 61 from being sucked out from the exhaust port 22, thereby ensuring the normal production yield of the liquid milk.

[0035] like Figure 1 Preferably, the bottom of the liquid outlet bin 2 is inclined, and the lower end of the inclination is located on the side close to the liquid outlet pipe 21. The inclined setting of the bottom of the liquid outlet bin 2 is conducive to the filtered liquid milk in the liquid outlet bin 2 to be quickly discharged from the liquid outlet pipe 21 into the detection device, thereby improving the discharge efficiency of the filtered liquid milk and also virtually improving the detection efficiency.

[0036] The impurity filtering device for detecting liquid milk provided by the utility model is specifically used to feed the impurity-containing liquid milk to be detected into the annular gap 5 through the feed pipe 12, and then the filter bin 1 is pressurized through the booster pipe 11, and a significant pressure difference is formed between the filter bin 1 and the liquid outlet bin 2 through the blocking effect of the sealing block 64 of the elastic component. At the same time, the vacuum pump connected to the exhaust port 22 of the liquid outlet bin 2 is turned on to evacuate the liquid outlet bin 2, so that a negative pressure is formed in the liquid outlet bin 2, which can increase the pressure difference between the filter bin 1 and the liquid outlet bin 2, thereby accelerating the filtering speed of the liquid milk, and also preventing the filtered liquid milk from gathering in the liquid receiving bin 6, thereby improving the filtering efficiency.

[0037] The impurity-containing liquid milk to be tested is pressed from the annular gap 5 to the inside of the filter screen cylinder 4, and flows into the liquid outlet chamber 2 from the liquid receiving chamber 6 and the lower liquid pipe 61, while the impurities are intercepted on the outside of the filter screen cylinder 4. When the pressure in the filter chamber 1 reaches the set value or the pressure difference between the filter chamber 1 and the liquid outlet chamber 2 reaches the set value, the air pressure pushes the liquid milk to be filtered, and also pushes the sealing block 64 downward, so that the liquid outlet hole 65 can be connected with the filter chamber 1, so that the filtered pure liquid milk can enter the liquid outlet chamber 2. When it is necessary to feed or clean the filter screen cylinder 4, the filter chamber 1 is depressurized through the pressure relief pipe 13, and the vacuum pump is stopped, so that the sealing block 64 can restore its sealing and blocking state under the action of the spring 63.

[0038] The liquid milk after impurities are removed enters the liquid outlet bin 2. The inclined bottom of the liquid outlet bin 2 is conducive to the filtered liquid milk in the liquid outlet bin 2 to be quickly discharged into the detection device from the liquid outlet pipe 21, thereby improving the discharge efficiency of the filtered liquid milk and also invisibly improving the detection efficiency and detection accuracy.

[0039] After the device has been running for a period of time, the filter screen cylinder 4 needs to be automatically cleaned. After the pressure difference between the filter chamber 1 and the liquid outlet chamber 2 is balanced by the pressure relief pipe 13, the output rod of the electric push rod 71 is extended and retracted up and down to drive the cleaning ring plate 72 and the scraper 73 and bristles thereon to move up and down, and in the process of moving up and down, the outer wall of the filter screen cylinder 4 is cleaned. At the same time, the annular shunt pipe 74 and the nozzle 75 above the cleaning ring plate 72 also move up and down accordingly, and the cleaning water is pumped into the spiral spring tube 77 by the water pump, and then enters the shunt pipe 74 from the spiral spring tube 77, and the cleaning water is sprayed from the nozzle 75, which can clean the filter screen cylinder 4, making the cleaning of the filter screen cylinder 4 more thorough and ensuring a better cleaning effect. Finally, the impurities and dirt cleaned are discharged from the filter chamber 1 through the sewage outlet 14, thereby ensuring the cleanliness of the filter screen cylinder 4, which is conducive to extending the service life of the filter screen cylinder 4. When the filter screen cartridge 4 needs to be disassembled, cleaned or replaced, it can be rotated and removed from the support plate 3 through the support ring 41 at the bottom of the filter screen cartridge 4, which is convenient for operation.

[0040] It should be noted that in the present invention, the detailed structure of some devices is not described in detail, but belongs to the prior art known to those skilled in the art, so it will not be repeated here. In addition, the parts not involved in the device are the same as the prior art or can be implemented by the prior art.

[0041] It should be noted that pressure sensors, flow meters or temperature sensors are installed on the delivery pipelines inside the device between different units and equipment. Different valves are also installed, such as pressure relief valves, pressure regulating valves, safety valves, etc., which are used to adjust and stabilize the pressure of the entire device.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it; although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in the field should understand that it is still possible to modify the technical solutions recorded in the aforementioned embodiments, or to replace some or all of the technical features therein with equivalents; and these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An impurity filtering device for liquid milk detection, characterized in that: include: A sealed filter bin and a liquid outlet bin, the filter bin being placed above the liquid outlet bin and being separated into two independent bins by a support plate; a filter screen cylinder is provided at the center of the filter bin, an annular gap is provided between the filter screen cylinder and the inner wall of the filter bin, and the width of the annular gap does not exceed the radius of the filter screen cylinder; a boost pipe, a feed pipe and a pressure relief pipe are provided at the top of the filter bin, the feed pipe and the boost pipe are provided above the annular gap, and the pressure relief pipe is provided above the filter screen cylinder; an inverted cone-shaped liquid receiving bin is connected to the bottom of the filter screen cylinder, the liquid receiving bin is sealed and connected to the support plate and is located at the liquid outlet bin. The interior of the bin; a lower liquid pipe is connected to the bottom center of the liquid receiving bin, an elastic component is provided below the lower liquid pipe, and the lower liquid pipe connects the filter screen cylinder, the liquid receiving bin and the liquid outlet bin through the elastic component; a liquid outlet pipe is provided on one side of the lower part of the liquid outlet bin, and the liquid outlet pipe is connected to the detection device through a pipeline; a cleaning component is also provided in the filter bin, and the cleaning component includes an electric push rod that passes through the filter bin at the top of the filter bin, and the output rod of the electric push rod is connected to a cleaning ring plate that is sleeved on the outside of the filter screen cylinder, and the inner wall of the cleaning ring plate is evenly distributed with bristles, and the bristles abut against the outer wall of the filter screen cylinder; a sewage outlet is provided on one side of the lower part of the filter bin.

2. The impurity filtering device for liquid milk detection according to claim 1, characterized in that: The elastic component includes a limit plate arranged at the bottom of the down liquid pipe, a spring is fixedly connected to the limit plate, a sealing block is fixedly connected to the other end of the spring, and a sliding seal is formed between the sealing block and the inner wall of the down liquid pipe; when the spring is in a naturally extended state, a plurality of liquid outlet holes are evenly opened on the side wall of the down liquid pipe located in the middle of the sealing block.

3. The impurity filtering device for liquid milk detection according to claim 1, characterized in that: A support ring is fixedly connected to the bottom of the filter screen cylinder, and the support ring is screwed to the support plate.

4. The impurity filtering device for liquid milk detection according to claim 1, characterized in that: A circle of scrapers is also connected to the top of the cleaning ring plate, and one side of the scrapers abuts against the outer wall of the filter screen cylinder.

5. The impurity filtering device for liquid milk detection according to claim 1, characterized in that: An annular diversion pipe is connected to the top of the cleaning ring plate through multiple support bars, and multiple nozzles are evenly distributed on the diversion pipe and are directed toward the outer wall of the filter mesh cylinder; a coil spring tube is connected to the side of the diversion pipe close to the output rod of the electric push rod, and the coil spring tube extends to the outside of the top of the filter bin and is connected to the water pump through a pipeline.

6. The impurity filtering device for liquid milk detection according to claim 2, characterized in that: An exhaust port is provided on one side of the upper portion of the liquid outlet bin, and the exhaust port is connected to a vacuum pump.

7. The impurity filtering device for liquid milk detection according to claim 6, characterized in that: The exhaust port is arranged above the liquid outlet hole of the lower liquid pipe.

8. The impurity filtering device for liquid milk detection according to any one of claims 1 to 7, characterized in that: The bottom of the liquid outlet bin is arranged to be inclined, and the inclined lower end is located at a side close to the liquid outlet pipe.

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