Animal husbandry air filtering performance detection table

Abstract

The invention relates to the technical field of detection tables, in particular to an animal husbandry air filtration performance detection table which comprises a detection table body and a fan installed in the detection table body, the detection table body is provided with a storage cavity, the storage cavity is provided with an opening structure, and the opening structure is used for allowing a filter to be installed and inserted. The device can be moved indoors and outdoors for use, can be used for detecting the performance of a newly purchased W-type filter and a W-type filter which is used outdoors for a long time so as to judge whether the W-type filter is blocked or not or whether the filtering performance of the W-type filter becomes poor, and can be matched with a horizontal pushing mechanism and a covering and sealing mechanism so as to judge whether one air inlet is severely blocked or not. And by arranging the elastic pull-up mechanism, when the covering and sealing mechanism presses downwards, the situation that the W-shaped filter is broken due to clamping dislocation can be avoided, the situation that vibration generated by the draught fan is excessively transmitted to the W-shaped filter can also be avoided, and the W-shaped filter is more convenient to pick.

Description

Technical Field

[0001] This invention relates to the field of testing station technology, specifically to a testing station for air filtration performance in animal husbandry. Background Technology

[0002] W-type filters are used in livestock farms for air intake. Multiple W-type filters are integrated to form a ventilation filter, used to filter the air entering the breeding room. With prolonged use, W-type filters may become clogged or their filtration performance may decline. A common testing method involves connecting a particle counter to the air intake duct between the ventilation filter and the plant, drawing air into the particle counter to test the filtration effect. However, this method has several drawbacks: firstly, it cannot detect pressure differences to determine if a blockage has occurred; secondly, it requires drilling holes in the air intake duct, damaging the duct structure; and thirdly, if the filtration performance deteriorates, all W-type filters need to be replaced, which is wasteful.

[0003] Therefore, a testing station needs to be designed to test the performance of individual W-type filters in order to determine which W-type filters need to be replaced. Furthermore, when installing W-type filters, companies need to test the performance of the purchased W-type filters to determine whether they meet the usage requirements.

[0004] Existing technologies also include W-type filter testing devices, such as a filter performance testing platform with Chinese patent. However, due to its large size, this structure is difficult to promote and use in enterprises.

[0005] Therefore, it is necessary to design an air filtration performance testing platform for livestock farming, which can test the performance of newly purchased and long-term outdoor W-type filters to determine whether they are clogged or have deteriorated filtration performance, so that newly purchased W-type filters can be tested in a standardized manner. Summary of the Invention

[0006] To address the aforementioned technical shortcomings, the purpose of this invention is to provide an air filtration performance testing platform for livestock farming, capable of testing the performance of newly purchased and long-term outdoor W-type filters.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: The present invention provides an air filtration performance testing platform for livestock farming, including a testing platform body and a fan installed inside the testing platform body. The testing platform body is provided with a storage cavity, and the storage cavity is provided with an opening structure for inserting a W-type filter. The bottom of the storage cavity is connected to the air intake of the fan through an integrated air intake pipe. The storage chamber is equipped with a differential pressure sampling tube for sensing its internal pressure, and the intake integrated pipe is equipped with an orifice plate flow meter for sensing gas flow. The end area of ​​the intake integrated pipe is equipped with a gas sampling tube for drawing in gas, and the gas sampling tube is connected to a particle counter.

[0008] Preferably, it further includes a horizontal pushing mechanism and a cover sealing mechanism. The cover sealing mechanism is provided with a sealing cover for covering a single air inlet of the W-type filter, and the horizontal pushing mechanism is used to drive the sealing cover to switch between multiple air inlets of the W-type filter.

[0009] Preferably, it also includes a square conduit, a square holder, and multiple elastic pull-up mechanisms. The square conduit is installed on the testing platform, the square holder is vertically slidable on the square conduit, the W-shaped filter is clamped on the square holder, and the elastic pull-up mechanisms are used to provide upward elastic force to the square holder.

[0010] Preferably, a positioning rod is fixedly provided at the bottom of the sealing cover for contacting the ramp on the W-type filter. In the prior art, each W-type filter is provided with a ramp, which is made of rigid plastic and is mainly used for the installation of the rigid baffle of the filter screen. The square guide tube is horizontally slidably installed on the table surface of the testing platform through the guide post one and the guide plate. The guide plate is fixedly installed on the testing platform, and the guide post one is slidably connected to the guide plate. The number of guide posts one is not limited and can be multiple. The square retainer includes two guide posts two, two support rods and a square retaining ring. The support rods are fixedly connected to the elastic pull mechanism, the guide posts two are slidably connected to the support rods, and each square retaining ring is fixedly connected to the guide post two. The square retaining ring can be vertically slidably inserted into the middle of the square guide tube.

[0011] Preferably, the side of the square conduit is fixedly provided with a groove, the bottom of the sealing cover is fixedly provided with a pressure post, and the locking rod is provided with a groove for the pressure post to be inserted.

[0012] Preferably, multiple elastic pull-up mechanisms are located on both sides of the square card seat. Each elastic pull-up mechanism includes a rotating base, a tension spring, and a rotating rod. The rotating base is fixedly installed on the testing platform. The middle part of the rotating rod is rotatably installed on the rotating base. The tension spring provides a downward elastic pull on the right end of the rotating rod. The sliding shaft is slidably installed on the left end of the rotating rod. The left end of the rotating rod has an oblong hole for the sliding shaft to slide. The sliding shaft is fixedly connected to the support rod through a connecting plate. The rotating base is provided with a stop bar for blocking the upper left side of the rotating rod.

[0013] Preferably, the integrated intake pipe includes a tapered pipe, a connecting pipe, a vertical pipe, and a horizontal pipe connected in sequence. The tapered pipe is connected to the bottom of the storage chamber, and one end of the horizontal pipe is connected to the air inlet of the fan via a flexible air guide hose. The air inlet of the fan is provided with an interface pipe that connects to the flexible air guide hose. Preferably, the orifice plate flow meter includes an orifice plate, an upstream sampling pipe, and a downstream sampling pipe. The orifice plate is fixedly installed on the inner edge of the vertical pipe, the downstream sampling pipe is located below the orifice plate, and the upstream sampling pipe is located above the orifice plate.

[0014] Preferably, the sealing mechanism further includes an electric push rod, a guide post three, and a guide seat. The guide seat is fixedly installed on the horizontal pushing mechanism, the electric push rod is fixedly installed on the guide seat, and the sealing cover is vertically slidable on the guide seat via the guide post three. The output end of the electric push rod is fixedly connected to the sealing cover.

[0015] Preferably, the horizontal pushing mechanism includes a slide rail, a slide base, a gear, a rack, and a motor. The slide rail is fixedly installed on the testing platform via a connecting frame. The guide base is slidably connected to the slide rail via the slide base. The rack is fixedly installed on the connecting frame. The motor is fixedly installed on the guide base. The motor is driven by the meshing of the gear and the rack.

[0016] The beneficial effects of this invention are as follows: The livestock air filtration performance testing platform of this invention can be moved for indoor and outdoor use, and can be used to test the performance of newly purchased and long-term outdoor W-type filters to determine whether they are clogged or have deteriorated filtration performance. It can also perform standardized testing on newly purchased W-type filters, and can test W-type filters made with new materials, requiring only control of the airflow. Furthermore, with the horizontal pushing mechanism and the cover sealing mechanism, it can determine if one air inlet is severely blocked while the other three air inlets have good air permeability; in this case, the W-type filter also needs to be replaced. The elastic upward pulling mechanism prevents the W-type filter from breaking due to misalignment when the cover sealing mechanism is pressed down, and also prevents excessive vibration from the fan from being transmitted to the W-type filter, making it easier to remove the W-type filter. Furthermore, when the sealing cover is pressed down, it can automatically adjust the position of the misaligned W-type filter to ensure that the sealing cover can be tightly closed on an air inlet. After the test is completed, it can automatically move the moved square duct back to its original position. When the W-type filter is installed, the square duct will not be pushed because it is locked by the pressure column. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0019] Figure 2 This is the front view of the present invention.

[0020] Figure 3 This is a partial three-dimensional structural diagram of the present invention.

[0021] Figure 4 This is a schematic diagram of the internal structure of the controller of the present invention.

[0022] Figure 5 A three-dimensional structural diagram of the sealing mechanism.

[0023] Figure 6 Partial cross-section of the present invention Figure 1 .

[0024] Figure 7 This is a partial three-dimensional structural diagram of the elastic pull-up mechanism.

[0025] Figure 8 Partial cross-section of the present invention Figure 2 .

[0026] Figure 9 Partial cross-section of the present invention Figure 3 .

[0027] Figure 10 This is a partial three-dimensional structural diagram of the sealing cover.

[0028] Figure 11 This is a partial three-dimensional structural diagram of a W-type filter.

[0029] Figure 12 This is a schematic diagram of the pipe connections for a particle counter.

[0030] Figure 13 This is a schematic diagram of the three-dimensional structure where the pressure column is located above the groove.

[0031] Figure 14 This is a three-dimensional structural diagram of a square catheter.

[0032] Figure 15 This is a partial three-dimensional structural diagram of a square card holder.

[0033] Figure 16 This is a partial three-dimensional structural diagram of a square catheter.

[0034] Explanation of reference numerals in the attached drawings: 1. W-type filter; 1a. Inclined slope; 2. Orifice plate flow meter; 2a. Orifice plate; 2b. Upstream sampling pipe; 2c. Downstream sampling pipe; 3. Differential pressure sampling pipe; 4. Fan; 5. Gas sampling pipe; 6. Intake integrated pipe; 6a. Conical pipe; 6b. Vertical pipe; 6c. Horizontal pipe; 6d. Air guide hose; 6e. Connecting pipe; 7. Detection platform; 7a. Storage chamber; 8. Horizontal pushing mechanism; 8a. Slide rail; 8b. Slide seat; 8c. Gear; 8d. Rack; 8e. Motor; 9. Cover sealing mechanism; 9a. Sealing cover plate; 9b. Electric push rod; 9c. Guide column three; 9 d. Guide seat; 9e. Clearance notch; 9f. Pressure column; 9h. Positioning rod; 10. Particle counter; 11. Bag filter; 12. Battery pack; 13. Square conduit; 13a. Guide post one; 13b. Locking rod; 13c. Groove; 13d. Guide plate; 14. Square card seat; 14a. Guide post two; 14b. Support rod; 14c. Square retaining ring; 15. Elastic pull-up mechanism; 15a. Rotary seat; 15b. Tension spring; 15c. Rotating rod; 15d. Sliding shaft; 15e. Stop bar; 16. Pipe one; 17. Pipe two; 18. Airflow switching gate; 19. Pipe three; 20. Diluter. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example: This invention provides a testing platform for the air filtration performance of livestock farms, such as... Figure 1-16 As shown, the device includes a testing platform 7 and a fan 4 installed inside the testing platform 7. The testing platform 7 is provided with a storage cavity 7a. The storage cavity 7a has an opening structure for the W-type filter 1 to be installed and inserted. The bottom of the storage cavity 7a is connected to the air intake of the fan 4 through an integrated air intake pipe 6. A differential pressure sampling tube 3 is installed inside the storage chamber 7a to sense its internal pressure. An orifice plate flow meter 2 is installed inside the intake integrated pipe 6 to sense gas flow rate. A gas sampling tube 5 is installed at the end of the intake integrated pipe 6 to draw in gas. The gas sampling tube 5 is connected to a particle counter 10, the end of which is connected to an air pump. The air pump draws in gas, allowing it to be drawn into the particle counter 10 along the gas sampling tube 5. A pressure sensor is connected to the differential pressure sampling tube 3 to sense the pressure inside the storage chamber 7a and compare it with the outdoor pressure. The orifice plate flow meter 2 calculates the gas flow rate per unit time. The data on gas flow and pressure difference is used to determine the clogging status of the W-type filter 1. This method can also be used to test the permeability of the W-type filter 1 during its initial installation. Furthermore, by installing the gas sampling tube 5 at the end of the intake integrated pipe 6, the incoming gas can be sampled and detected by the particle counter 10. The detection platform 7 is equipped with a capsule filter 11, which is used for sampling and filtering by the orifice plate flow meter 2 and the gas sampling tube 5.

[0037] A battery pack 12 is installed on the testing platform 7. Among them, Figure 2 and Figure 3 The arrows shown indicate the direction of gas flow.

[0038] While the above method can test the W-type filter 1, there are still some issues when testing it for long-term outdoor use. The W-type filter 1 typically has four air inlets. If the test result indicates it can continue to be used, but one inlet is severely blocked while the other three have good air permeability, continued use of this W-type filter 1 will affect its subsequent filtration effect. Therefore, to avoid this situation, a horizontal pushing mechanism 8 and a cover sealing mechanism 9 are included. The cover sealing mechanism 9 is equipped with a sealing cover plate 9a for covering a single air inlet of the W-type filter 1. The horizontal pushing mechanism 8 is used to move the sealing cover plate 9a between the multiple air inlets of the W-type filter 1. By blocking one air inlet while leaving the other three open, the flow rate and pressure can be measured after the testing station operates. By moving the sealing cover plate 9a four times and performing four tests on the testing station, the data from these four tests are compared. If the difference is not significant, it indicates that the W-type filter 1 is normal and does not exhibit the situation where one inlet is severely blocked while the other three have good air permeability. Conversely, the W-type filter 1 needs to be replaced. Furthermore, the method of blocking only one inlet is employed because the orifice plate flow meter 2 has a limited detection range. This method ensures that the flow detection range remains within the detection range of the orifice plate flow meter 2, allowing for continued detection.

[0039] When the fan 4 is operating, it causes vibrations to the testing platform 7. Since the W-type filter 1 only has four sides in contact with the testing platform 7, which is essentially suspended in mid-air, the vibrations are even greater. To address this, a square conduit 13, a square mounting base 14, and multiple elastic pull-up mechanisms 15 are included. The square conduit 13 is mounted on the testing platform 7, the square mounting base 14 is vertically slidable on the square conduit 13, the W-type filter 1 is secured to the square mounting base 14, and the elastic pull-up mechanisms 15 provide upward elasticity to the square mounting base 14. By pulling the square mounting base 14 and the W-type filter 1 upwards through the elastic pull-up mechanisms 15, the W-type filter 1 is separated from the testing platform 7, preventing the vibrations from the testing platform 7 from being transmitted to the W-type filter 1 and causing it to disintegrate. Furthermore, when the sealing cover 9a is pressed down to block an air inlet, if the sealing cover 9a collides directly with the W-type filter 1 due to misalignment, the square bracket 14 supports the W-type filter 1, allowing it a downward movement range. This prevents the sealing cover 9a from crushing the plastic parts of the W-type filter 1, ensuring the safety of the W-type filter 1 during testing. When removing the W-type filter 1, one of the operator's fingers can press down on the square bracket 14, allowing it to move upwards and separating more quickly from the W-type filter 1, facilitating its removal.

[0040] When the contour is misaligned, in order to ensure that the sealing cover 9a can still cover the W-type filter 1 tightly, a positioning rod 9h is fixedly installed at the bottom of the sealing cover 9a for contacting the ramp 1a on the W-type filter 1. In the prior art, each W-type filter 1 is provided with a ramp 1a, which is made of rigid plastic and is mainly used for the installation of the rigid baffle of the filter screen. The square guide tube 13 can be horizontally slidably installed on the table surface of the test table 7 through the guide post 13a and the guide plate 13d. The guide post 13a is fixedly installed on the testing platform 7. The guide post 13a is slidably connected to the guide plate 13d. The number of guide posts 13a is not limited and can be multiple. The square retainer 14 includes two guide posts 14a, two support rods 14b and a square retaining ring 14c. The support rods 14b are fixedly connected to the elastic pull-up mechanism 15. The guide posts 14a are slidably connected to the support rods 14b. Each square retaining ring 14c is fixedly connected to the guide post 14a. The square retaining ring 14c can slide vertically into the middle of the square guide tube 13.

[0041] When the sealing cover 9a is closed downwards, if the W-type filter 1 does not misalign its contour, the sealing cover 9a will finally come into contact with the inclined surface of the ramp 1a.

[0042] However, if misalignment occurs, the sealing cover 9a will contact the ramp 1a during the descent of the W-type filter 1, allowing the position of the W-type filter 1 to be adjusted so that the sealing cover 9a can cover one of the air inlets on the top of the W-type filter 1. During the movement of the W-type filter 1, the sealing cover 9a can push the W-type filter 1 to move laterally via the ramp 1a. The W-type filter 1 will push the square retaining ring 14c to slide laterally along the second guide post 14a, and the square retaining ring 14c will push the square conduit 13 to move laterally. Through the first guide post 13a and the guide plate 13d, the square conduit 13 can be tightly fitted onto the table surface of the testing platform 7 while being able to move laterally.

[0043] It should be explained that the misalignment of the W-type filter 1 is not too great, but a slight misalignment will cause the sealing cover 9a to fail to close properly on the W-type filter 1.

[0044] Furthermore, there are two positioning rods 9h, which respectively contact the two side ramps 1a of the W-type filter 1, enabling the W-type filter 1 to be pushed more stably. And through the action of the elastic pull mechanism 15, when the W-type filter 1 encounters resistance in pushing, it can be relieved by compressing downward through the elastic pull mechanism 15. After the resistance is relieved, the elastic pull mechanism 15 will apply an upward thrust to it, making it easier to move laterally.

[0045] Each W-type filter 1 is provided with a ramp 1a for limiting the position of the filter screen, and the side of the sealing cover 9a is provided with a clearance notch 9e that avoids and fits against the ramp 1a. By providing the clearance notch 9e, the sealing cover 9a can be fitted into the opening of the W-type filter 1.

[0046] Because the square conduit 13 and the square holder 14 are movable as a whole, they will be pushed when the W-type filter 1 is installed, causing the position of the W-type filter 1 to shift. Furthermore, if the W-type filter 1 is pushed by the positioning rod 9h, its square conduit 13 and square holder 14 also need to be reset after the W-type filter 1 is inspected. For this purpose, a groove 13c is fixedly provided on the side of the square conduit 13, a pressure post 9f is fixedly provided at the bottom of the sealing cover plate 9a, and a groove 13c is provided on the locking rod 13b for the pressure post 9f to be inserted. When the W-type filter 1 is installed, the pressure post 9f is inserted into the groove 13c, preventing the square conduit 13 from moving laterally, thus locking the square holder 14 and preventing it from being pushed during the installation of the W-type filter 1. After the air inlet on the W-type filter 1 is inspected, the pressure column 9f is pressed back onto the groove 13c. If the square guide tube 13 is pushed during the inspection, the pressure column 9f will push the locking rod 13b to move to the side and reset it, so that the positions of the square guide tube 13 and the square bracket 14 are reset, in preparation for the next inspection.

[0047] Furthermore, due to the V-shaped structure of the individual filter chamber of the W-type filter 1, when the sealing cover 9a is closed over an air inlet, the pressure column 9f can be inserted into the V-shaped structure without colliding with the W-type filter 1.

[0048] Multiple elastic pull-up mechanisms 15 are located on both sides of the square mounting base 14. Each elastic pull-up mechanism 15 includes a rotating base 15a, a tension spring 15b, and a rotating rod 15c. The rotating base 15a is fixedly installed on the testing platform 7. The middle part of the rotating rod 15c is rotatably installed on the rotating base 15a. The tension spring 15b provides a downward elastic force to the right end of the rotating rod 15c. The sliding shaft 15d is slidably installed on the left end of the rotating rod 15c. The left end of the rotating rod 15c has an oblong hole for the sliding shaft 15d to slide. The sliding shaft 15d is fixedly connected to the support rod 14b through a connecting plate. The rotating base 15a is provided with a stop bar 15e for blocking the upper left side of the rotating rod 15c. One end of the tension spring 15b is fixedly connected to the platform of the testing platform 7, and the other end of the tension spring 15b is fixedly connected to the rotating rod 15c. The spring 15b pulls the rotating rod 15c to rotate, so that the sliding shaft 15d can be pulled upward, which drives the square card seat 14 to move upward. The limit position of the upward movement is limited by the stop rod 15e, so that the height of the square card seat 14 can always be locked inside the square card seat 14.

[0049] The integrated suction pipe 6 includes a tapered pipe 6a, a connecting pipe 6e, a vertical pipe 6b, and a horizontal pipe 6c connected in sequence. The tapered pipe 6a is connected to the bottom of the storage chamber 7a. One end of the horizontal pipe 6c is connected to the air inlet of the fan 4 via a flexible air guide hose 6d. The air inlet of the fan 4 is equipped with an interface pipe connected to the flexible air guide hose 6d. When the fan 4 operates, the suction force generated by the fan 4 is applied to the storage chamber 7a in sequence through the flexible air guide hose 6d, the horizontal pipe 6c, the vertical pipe 6b, the connecting pipe 6e, and the tapered pipe 6a. By using the flexible air guide hose 6d, the vibration of the fan 4 can be prevented from being transmitted to the horizontal pipe 6c, thus preventing damage to the integrated suction pipe 6.

[0050] The orifice plate flow meter 2 includes an orifice plate 2a, an upstream sampling tube 2b, and a downstream sampling tube 2c. The orifice plate 2a is fixedly installed on the inner edge of the vertical pipe 6b. The downstream sampling tube 2c is located below the orifice plate 2a, and the upstream sampling tube 2b is located above the orifice plate 2a. The pressure difference across the orifice plate 2a is detected by the downstream sampling tube 2c and the upstream sampling tube 2b to determine the flow rate of the gas passing through it.

[0051] The sealing mechanism 9 also includes an electric push rod 9b, a guide post 9c, and a guide seat 9d. The guide seat 9d is fixedly mounted on the horizontal pushing mechanism 8, the electric push rod 9b is fixedly mounted on the guide seat 9d, and the sealing cover 9a is vertically slidably mounted on the guide seat 9d via the guide post 9c. The output end of the electric push rod 9b is fixedly connected to the sealing cover 9a. By controlling the electric push rod 9b to operate, the electric push rod 9b will push the sealing cover 9a downward, so that the sealing cover 9a can press against one of the air inlets of the W-type filter 1.

[0052] The horizontal pushing mechanism 8 includes a slide rail 8a, a slide block 8b, a gear 8c, a rack 8d, and a motor 8e. The slide rail 8a is fixedly mounted on the testing platform 7 via a connecting frame. The guide seat 9d is slidably connected to the slide rail 8a via the slide block 8b. The rack 8d is fixedly mounted on the connecting frame. The motor 8e is fixedly mounted on the guide seat 9d and is driven by the gear 8c meshing with the rack 8d. By controlling the motor 8e to operate, the motor 8e drives the rotating gear 8c to mesh with the rack 8d, thus causing the guide seat 9d to slide horizontally along the slide rail 8a. The slide block 8b serves to guide the movement of the sealing cover plate 9a. Figure 5 As can be seen, the gap between its two slide rails 8a allows staff to reach in and remove the W-type filter 1.

[0053] In use, the W-type filter 1 is inserted into the square mounting base 14, and then the fan 4 is started. The pressure inside the storage chamber 7a is sensed through the differential pressure sampling tube 3, and the gas flow rate is measured through the orifice plate flow meter 2 to determine the blockage of the W-type filter 1. Finally, the particle counter 10 connected to the gas sampling tube 5 is used for testing to determine the filtration effect. The gas sampling tube 5 is connected to the particle counter 10 through pipe one 16. The inlet of the particle counter 10 is also connected to pipe two 17. An airflow switching gate 18 is set at the junction of pipe one 16 and pipe two 17, and pipe three 19 is formed at the junction of pipe one 16 and pipe two 17. A diluent 20 is connected to the side of pipe three 19. During testing, the particle counter 10 draws in the filtered gas from the gas sampling tube 5 through pipe one 16 and measures the number of gas particles, while pipe two 17 draws in the unfiltered gas and measures the number of gas particles. During the measurement process, the connection between pipe 16 and pipe 319 or pipe 217 and pipe 319 is switched via airflow switching gate 18. The filtration efficiency is determined by comparing the particle count measured when connected to pipe 217 with the particle count measured when connected to pipe 16. The specific efficiency calculation formula is (1- The result is calculated as 100%, which represents the filtration efficiency. The main reason for setting up the diluent 20 is that the actual measured particle count may exceed the measurement range of the particle counter 10, thus requiring dilution. Generally, a dilution ratio of 10 is selected.

[0054] Furthermore, when the test result indicates that the filter can continue to be used, the horizontal pushing mechanism 8 can move the sealing cover 9a at multiple W-type filter 1 air inlets, and the sealing mechanism 9 can push the sealing cover 9a downward to cover the air inlets of the W-type filter 1 to determine whether one air inlet is severely blocked while the other three air inlets have good air permeability.

[0055] Obviously, those skilled in the art can make various modifications and variations to this invention without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims of this invention and their equivalents, this invention also intends to include these modifications and variations.

Claims

1. A testing platform for air filtration performance in livestock farming, characterized in that, Includes a testing platform (7) and a fan (4) installed inside the testing platform (7). The testing platform (7) is provided with a storage cavity (7a). The storage cavity (7a) is provided with an opening structure for the W-type filter (1) to be installed and inserted. The bottom of the storage cavity (7a) is connected to the air intake of the fan (4) through an integrated air intake pipe (6). The storage chamber (7a) is equipped with a differential pressure sampling tube (3) for sensing its internal pressure. The intake integrated pipe (6) is equipped with an orifice plate flow meter (2) for sensing gas flow. The end area of ​​the intake integrated pipe (6) is equipped with a gas sampling tube (5) for absorbing gas. The gas sampling tube (5) is connected to the particle counter (10).

2. The livestock air filtration performance testing platform as described in claim 1, characterized in that, It also includes a horizontal pushing mechanism (8) and a cover sealing mechanism (9), wherein the cover sealing mechanism (9) is provided with a sealing cover plate (9a) for covering a single air inlet of the W-type filter (1), and the horizontal pushing mechanism (8) is used to drive the sealing cover plate (9a) to switch between multiple air inlets of the W-type filter (1).

3. The livestock air filtration performance testing platform as described in claim 1, characterized in that, It also includes a square conduit (13), a square bracket (14) and multiple elastic pull-up mechanisms (15). The square conduit (13) is installed on the testing platform (7). The square bracket (14) can be vertically slidably installed on the square conduit (13). The W-type filter (1) is clamped on the square bracket (14). The elastic pull-up mechanism (15) is used to provide upward elastic force to the square bracket (14).

4. The livestock air filtration performance testing platform as described in claim 3, characterized in that, The bottom of the sealing cover (9a) is fixedly provided with a positioning rod (9h) for contacting the ramp (1a) on the W-type filter (1). The square conduit (13) can be horizontally slidably installed on the table surface of the test platform (7) through the guide post (13a) and the guide plate (13d). The square card seat (14) includes two guide posts (14a), two support rods (14b) and a square retaining ring (14c). The support rod (14b) is fixedly connected to the elastic pull mechanism (15). The guide post (14a) is slidably connected to the support rod (14b). Each square retaining ring (14c) is fixedly connected to the guide post (14a). The square retaining ring (14c) can be vertically slid into the middle of the square conduit (13).

5. The livestock air filtration performance testing platform as described in claim 4, characterized in that, A groove (13c) is fixedly provided on the side of the square conduit (13), a pressure column (9f) is fixedly provided on the bottom of the sealing cover plate (9a), and a groove (13c) is provided on the locking rod (13b) for the pressure column (9f) to be inserted.

6. The livestock air filtration performance testing platform as described in claim 4, characterized in that, Multiple elastic pull-up mechanisms (15) are located on both sides of the square card holder (14). Each elastic pull-up mechanism (15) includes a rotating seat (15a), a tension spring (15b), and a rotating rod (15c). The rotating seat (15a) is fixedly installed on the testing table body (7). The middle part of the rotating rod (15c) is rotatably installed on the rotating seat (15a). The tension spring (15b) is used to provide a downward elastic force to the right end of the rotating rod (15c). The sliding shaft (15d) is slidably installed on the left end of the rotating rod (15c). The left end of the rotating rod (15c) is provided with an oblong hole for the sliding shaft (15d) to slide. The sliding shaft (15d) is fixedly connected to the support rod (14b) through a connecting plate. The rotating seat (15a) is provided with a stop bar (15e) for blocking the upper left side of the rotating rod (15c).

7. The livestock air filtration performance testing platform as described in claim 4, characterized in that, The intake integrated pipe (6) includes a tapered pipe (6a), a connecting pipe (6e), a vertical pipe (6b), and a horizontal pipe (6c) connected in sequence. The tapered pipe (6a) is connected to the bottom of the storage chamber (7a). One end of the horizontal pipe (6c) is connected to the air inlet of the fan (4) through a flexible air guide hose (6d). The air inlet of the fan (4) is provided with an interface pipe connected to the flexible air guide hose (6d).

8. The livestock air filtration performance testing platform as described in claim 1, characterized in that, The orifice plate flow meter (2) includes an orifice plate (2a), an upstream sampling tube (2b) and a downstream sampling tube (2c). The orifice plate (2a) is fixedly installed on the inner edge of the vertical tube (6b), the downstream sampling tube (2c) is located below the orifice plate (2a), and the upstream sampling tube (2b) is located above the orifice plate (2a).

9. The livestock air filtration performance testing platform as described in claim 2, characterized in that, The sealing mechanism (9) also includes an electric push rod (9b), a guide post three (9c), and a guide seat (9d). The guide seat (9d) is fixedly installed on the horizontal pushing mechanism (8), the electric push rod (9b) is fixedly installed on the guide seat (9d), and the sealing cover plate (9a) can be vertically slidably installed on the guide seat (9d) through the guide post three (9c). The output end of the electric push rod (9b) is fixedly connected to the sealing cover plate (9a).

10. The livestock air filtration performance testing platform as described in claim 7, characterized in that, The horizontal pushing mechanism (8) includes a slide rail (8a), a slide block (8b), a gear (8c), a rack (8d), and a motor (8e). The slide rail (8a) is fixedly installed on the testing platform (7) through a connecting frame. The guide block (9d) is slidably connected to the slide rail (8a) through the slide block (8b). The rack (8d) is fixedly installed on the connecting frame. The motor (8e) is fixedly installed on the guide block (9d). The motor (8e) is driven by meshing with the rack (8d) through the gear (8c).

Images