Dust removal efficiency detection component, dust removal efficiency test method and test system

Abstract

The present invention discloses a dust removal efficiency detection component, a dust removal efficiency testing method and a testing system. The dust removal efficiency detection component includes a housing, a first sealing member, a fan, a first dust sensor and a second dust sensor. A test chamber is provided in the housing, and a mounting port connected to the test chamber is provided on the housing. The first sealing member is used to be sleeved on the outside of the filter cartridge. The first sealing member is installed at the mounting port and is used to allow the filter cartridge to extend into the test chamber. The fan is used to be detachably connected to the filter cartridge and is arranged above the filter cartridge. The air inlet of the fan is used to be connected to the outlet of the filter cartridge. The first dust sensor is arranged in the test chamber, and the second dust sensor is arranged at the air outlet of the fan. The above-mentioned dust removal efficiency detection component can understand the filtration efficiency of the filter cartridge by comparing the values ​​of the first dust sensor and the second dust sensor. Since the assembly of the filter cartridge, the first sealing member and the fan can be detached, the assembly is simple, the detection takes a short time, and is conducive to improving the detection efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of detection equipment, and in particular to a dust removal efficiency detection component, a dust removal efficiency testing method and a testing system. Background Art

[0002] With the rapid development of environmental protection technologies, national standards for industrial pollution emissions are becoming increasingly stringent. The core components of an air filtration system determine the air cleanliness level after treatment, specifically the dust removal efficiency. The primary equipment used to test filter cartridge dust removal efficiency is largely specialized and expensive. Companies must entrust third-party testing agencies and research institutes to verify filter cartridge dust removal efficiency, which is time-consuming and costly. This can lead to untimely testing and the inability to test dust removal efficiency for every production batch. This can lead to issues such as substandard emissions during operation. Summary of the Invention

[0003] Based on this, the present invention aims to overcome the defects of the prior art and provide a dust removal efficiency detection component, a dust removal efficiency testing method and a testing system that can reduce the detection time.

[0004] The technical solution is as follows:

[0005] A dust removal efficiency detection component includes a box body, a first seal, a fan, a first dust sensor and a second dust sensor. A test chamber is provided in the box body, and a mounting port connected to the test chamber is provided on the box body. The first seal is used to be mounted on the outside of the filter cartridge. The first seal is installed at the mounting port to allow the filter cartridge to extend into the test chamber. The fan is used to be detachably connected to the filter cartridge and is provided above the filter cartridge. The air inlet of the fan is used to be connected to the outlet of the filter cartridge. The first dust sensor is provided in the test chamber, and the second dust sensor is provided at the air outlet of the fan.

[0006] The above-mentioned dust removal efficiency detection component can be used to sleeve the first sealing member on the outside of the filter cartridge and install the first sealing member at the installation port on the box body. At this time, the filter cartridge extends into the test cavity of the box body, and then the fan can be installed on the filter cartridge so that the air inlet of the fan is connected with the outlet of the filter cartridge. The dead weight of the fan can press the filter cartridge and the first sealing member toward the box body, so that the sealing effect between the fan and the filter cartridge, the filter cartridge and the first sealing member, and the first sealing member and the box body is better. Dust gas can be filled into the test cavity, and the fan can be turned on to exhaust the filter cartridge so that the dust gas is filtered by the filter cartridge. The gas is discharged from the air outlet of the fan. The first dust sensor can detect the dust concentration in the test chamber, and the second dust sensor can detect the dust concentration of the filtered gas. By comparing the values ​​of the first dust sensor and the second dust sensor, the filtration efficiency of the filter cartridge can be understood. Since the filter cartridge, the first seal and the fan can be detachable, the filtration efficiency of different filter cartridges can be conveniently tested. The assembly is simple and the test takes a short time, which is conducive to improving the test efficiency and facilitating the testing of each batch to prevent unqualified products.

[0007] In one embodiment, the dust removal efficiency detection component further includes an assembly part, a second seal and a third seal. The assembly part is sleeved on the outside of the first seal, and the second seal and the third seal are arranged around the first seal. The second seal and the third seal are respectively located on both sides of the assembly part, and the two side surfaces of the second seal respectively abut the box body and the assembly part, and the two side surfaces of the third seal respectively abut the assembly part and the fan.

[0008] In one embodiment, the cross-sections of the second sealing member and the third sealing member are both trapezoidal, and the inner diameters of the second sealing member and the third sealing member gradually increase in a direction away from the assembly member.

[0009] A dust removal efficiency testing method, using any of the above-mentioned dust removal efficiency detection components, comprises the following steps:

[0010] Sleeve the first sealing member onto the outside of the filter cartridge;

[0011] Inserting the filter cartridge into the test cavity through the installation opening, and installing the first sealing member at the installation opening;

[0012] Place the fan above the filter cartridge and connect it to the filter cartridge so that the air inlet of the fan is in communication with the outlet of the filter cartridge;

[0013] Turn on the fan, record the parameters of the first dust sensor to obtain the initial dust concentration H1, and record the parameters of the second dust sensor to obtain the dust concentration after filtration H2;

[0014] Calculate the actual filtration efficiency n=1-H2 / H1, compare the actual filtration efficiency n with the qualified filtration efficiency N, and when n≧N, the filter cartridge is qualified.

[0015] The above-mentioned dust removal detection method can assemble the various components and start the motor to enable the filter cartridge to filter the gas in the test chamber. At this time, the first dust sensor and the second dust sensor can be used to detect the gas before and after filtration respectively, and the actual filtration efficiency of the filter cartridge can be obtained by calculation. At this time, it can be compared with the qualified filtration efficiency to determine whether the filter cartridge is qualified. The above-mentioned dust removal detection method can quickly understand whether the filter cartridge is qualified, and it is easy to disassemble and assemble, which can reduce the detection time and help improve the detection efficiency.

[0016] A test system, a filter cartridge and a dust removal efficiency detection component as described in any of the above items, the filter cartridge includes a head cover and a filter element connected to each other, the outlet of the filter cartridge is arranged on the head cover, the first sealing member is sleeved outside the head cover, the fan is detachably connected to the head cover, and is used to place the filter element in the test chamber, and the air inlet of the fan is connected to the outlet of the filter cartridge.

[0017] The above-mentioned test system can be provided with the first sealing member outside the head cover, and the first sealing member is installed at the installation opening on the box body. At this time, the filter element extends into the test cavity of the box body, and then the fan can be installed on the filter cartridge so that the air inlet of the fan is connected with the outlet of the filter cartridge. The dead weight of the fan can press the filter cartridge and the first sealing member toward the box body, so that the sealing effect between the fan and the filter cartridge, the filter cartridge and the first sealing member, and the first sealing member and the box body is better. The test cavity can be filled with dust gas, and the fan can be turned on to exhaust the filter cartridge so that the dust gas is filtered by the filter element, and the filtered gas is filtered. The body is discharged from the air outlet of the fan. The first dust sensor can detect the dust concentration in the test chamber, and the second dust sensor can detect the dust concentration of the filtered gas. By comparing the values ​​of the first dust sensor and the second dust sensor, the filtration efficiency of the filter cartridge can be understood. Since the filter cartridge, the first seal and the fan can be detachable, the filtration efficiency of different filter cartridges can be conveniently tested. The assembly is simple and the test takes a short time, which is conducive to improving the test efficiency and facilitating the testing of each batch to prevent unqualified products.

[0018] In one embodiment, a plurality of latching teeth are provided on the inner wall of the first sealing member, and the latching teeth are arranged at intervals along the axial direction of the first sealing member.

[0019] In one embodiment, a protrusion is provided on the outer wall of the head cover, and the protrusions are multiple and arranged at intervals along the circumference of the head cover. The sum of the height of the latch tooth and the height of the protrusion is greater than the distance between the inner wall of the first seal and the outer wall of the head cover.

[0020] In one embodiment, the distance between two adjacent latch teeth is smaller than the distance between two adjacent protrusions.

[0021] In one embodiment, a groove matching the assembly part is provided on the outer surface of the first sealing member, and the assembly part and the latching teeth are correspondingly arranged on both sides of the first sealing member.

[0022] In one embodiment, the head cover is provided with a slot matching the filter element, the slot is arranged around the outlet, the fan includes a motor and a housing, a turbine is provided in the housing, the motor is matched with the turbine transmission, the motor is provided on one side of the housing, and a protrusion is provided on the other side of the housing, the air inlet is provided at the protrusion, the protrusion is used to be inserted into the outlet, an air duct is provided in the housing, and the air outlet and the air inlet are both connected to the air duct. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 A side view of a test system according to an embodiment of the present invention;

[0024] Figure 2 is a perspective view of a test system according to an embodiment of the present invention;

[0025] Figure 3 This is a cross-sectional view of the first sealing member, the assembly member, and the head cover after assembly according to an embodiment of the present invention;

[0026] Figure 4 for Figure 3 A magnified schematic diagram of point A in the middle;

[0027] Figure 5 for Figure 3 A magnified schematic diagram of point B in the middle;

[0028] Figure 6 This is a schematic diagram of the assembly of the first sealing member, the assembly member, and the head cover according to an embodiment of the present invention.

[0029] Description of reference numerals:

[0030] 100. Box body, 101. Test chamber, 102. Inlet, 200. First seal, 201. Gear, 202. Groove, 210. Sleeve end, 220. Elastic end, 221. First section, 222. Second section, 223. Third section, 300. Fan, 310. Motor, 320. Housing, 400. First dust sensor, 500. Second dust sensor, 600. Assembly, 710. Second seal, 720. Third seal, 800. Controller, 900. Filter cartridge, 910. Head cover, 911. Outlet, 912. Protrusion, 913. Slot, 920. Filter element. DETAILED DESCRIPTION

[0031] To facilitate understanding of the present invention, the present invention will be described more fully below with reference to the accompanying drawings. The accompanying drawings illustrate preferred embodiments of the present invention. However, the present invention may be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present disclosure.

[0032] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly attached to the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0033] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the art to which the present invention pertains. The terms used herein in the specification of the present invention are for the purpose of describing specific embodiments only and are not intended to limit the present invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0034] The "first" and "second" in the present invention do not represent specific quantities and orders, but are only used to distinguish names.

[0035] like Figure 1 and Figure 2 As shown, one embodiment discloses a dust removal efficiency detection component, including a box body 100, a first seal 200, a fan 300, a first dust sensor 400 and a second dust sensor 500. A test chamber 101 is provided in the box body 100, and a mounting port connected to the test chamber 101 is provided on the box body 100. The first seal 200 is used to be mounted on the outside of the filter cartridge 900. The first seal 200 is installed at the mounting port to allow the filter cartridge 900 to extend into the test chamber 101. The fan 300 is used to be detachably connected to the filter cartridge 900 and is arranged above the filter cartridge 900. The air inlet of the fan 300 is used to be connected to the outlet 911 of the filter cartridge 900. The first dust sensor 400 is arranged in the test chamber 101, and the second dust sensor 500 is arranged at the air outlet of the fan 300.

[0036] The above-mentioned dust removal efficiency detection component can be used to sleeve the first sealing member 200 on the outside of the filter cartridge 900, and install the first sealing member 200 at the installation port on the box body 100. At this time, the filter cartridge 900 extends into the test cavity 101 of the box body 100, and then the fan 300 can be installed on the filter cartridge 900 so that the air inlet of the fan 300 is connected with the outlet 911 of the filter cartridge 900. The dead weight of the fan 300 can press the filter cartridge 900 and the first sealing member 200 toward the box body 100, so that the sealing effect between the fan 300 and the filter cartridge 900, the filter cartridge 900 and the first sealing member 200, and the first sealing member 200 and the box body 100 is better. Dust gas can be filled into the test cavity 101, and the fan 300 can be turned on to press the filter cartridge 900. The dust gas is exhausted to be filtered by the filter cartridge 900, and the filtered gas is discharged from the air outlet of the fan 300. The first dust sensor 400 can detect the dust concentration in the test chamber 101, and the second dust sensor 500 can detect the dust concentration of the filtered gas. By comparing the values ​​of the first dust sensor 400 and the second dust sensor 500, the filtering efficiency of the filter cartridge 900 can be understood. Since the filter cartridge 900 and the first seal 200 and the fan 300 can be detachable, the filtering efficiency of different filter cartridges 900 can be conveniently tested, and the assembly is simple, and the detection takes a short time, which is conducive to improving the detection efficiency and facilitating the detection of each batch to prevent unqualified products.

[0037] Alternatively, as Figure 1 As shown, the first dust sensor 400 is disposed at the upper side of the test chamber 101. During the filtration process of the filter cartridge 900, dust may adhere to the filter cartridge 900, and the dust may affect the detection of the first dust sensor 400 as it falls. Therefore, the first dust sensor 400 is disposed at the upper side of the test chamber 101 to improve the testing accuracy of the first dust sensor 400.

[0038] Optionally, there are at least two first dust sensors 400, which are evenly spaced and arranged around the filter cartridge 900. In this case, the dust concentration of the gas in the test chamber 101 can be more accurately obtained by averaging the values ​​measured by the multiple first dust sensors 400.

[0039] Alternatively, as Figure 2 As shown, the installation port is provided on the top surface of the box body 100 , and an air inlet 102 is provided on the side of the box body 100 , through which dust gas can be filled into the test chamber 101 .

[0040] Optionally, the first sealing member 200 is made of a soft material, in which case the first sealing member 200 can be deformed to be more closely attached to the box body 100, thereby achieving a good sealing effect.

[0041] In one embodiment, Figure 1 As shown, the dust removal efficiency detection component also includes an assembly part 600, a second seal 710 and a third seal 720. The assembly part 600 is mounted on the outside of the first seal 200. The second seal 710 and the third seal 720 are arranged around the first seal 200. The second seal 710 and the third seal 720 are respectively located on both sides of the assembly part 600. The two side surfaces of the second seal 710 respectively abut the box body 100 and the assembly part 600. The two side surfaces of the third seal 720 respectively abut the assembly part 600 and the fan 300. When the fan 300 is installed above the filter cartridge 900, the weight of the fan 300 will squeeze the second seal 710 and the third seal 720, so that the two sides of the second seal 710 are pressed against the box body 100 and the assembly part 600, preventing leakage in the assembly between the box body 100 and the first seal 200. The two sides of the third seal 720 are pressed against the assembly part 600 and the fan 300, which can prevent leakage in the assembly between the fan 300 and the filter cartridge 900. Therefore, the filtration of the filter cartridge 900 can be guaranteed to proceed normally, and at the same time, there will be no error in the calculation of the filtration efficiency due to leakage, which can improve the accuracy of the detection.

[0042] Optionally, the second seal 710 and the third seal 720 are fixedly connected to the assembly 600 to prevent the second seal 710 and the third seal 720 from shifting during assembly, thereby ensuring a good sealing effect. Specifically, the second seal 710 and the third seal 720 are bonded to the assembly 600 to ensure a good sealing effect between the second seal 710 and the third seal 720 and the assembly 600.

[0043] Optionally, the second sealing member 710 and the third sealing member 720 are spaced apart from the first sealing member 200 to achieve a better sealing effect.

[0044] Optionally, the second seal 710 and the third seal 720 are both made of soft materials, which can deform to fit more tightly and provide a tighter seal. Specifically, the first seal 200, the second seal 710, and the third seal 720 can be made of rubber. This is low-cost and durable.

[0045] In one embodiment, Figure 1As shown, the cross-sections of the second seal 710 and the third seal 720 are both trapezoidal, and the inner diameters of the second seal 710 and the third seal 720 gradually increase in the direction away from the assembly 600. The trapezoidal seal can maintain its sealing effect even after deformation. Since the downward force generated by the weight of the fan 300 needs to be transmitted to the assembly 600 by the third seal 720, and then transmitted from the assembly 600 to the second seal 710, the second seal 710 and the third seal 720 are configured to have an inner diameter that gradually increases in the direction away from the assembly 600. This reduces the pressure on the assembly 600 and facilitates the corresponding arrangement of the second seal 710 and the third seal 720 on both sides of the assembly 600, thereby preventing the assembly 600 from tilting due to the different deformation conditions of the second seal 710 and the third seal 720.

[0046] Optionally, the second sealing member 710 and the third sealing member 720 are symmetrically arranged on both sides of the assembly member 600 .

[0047] One embodiment discloses a dust removal efficiency testing method, which uses the dust removal efficiency detection component described above and includes the following steps:

[0048] The first sealing member 200 is sleeved on the outside of the filter cartridge 900;

[0049] Insert the filter cartridge 900 into the test cavity 101 through the installation port, and install the first sealing member 200 at the installation port;

[0050] Place the fan 300 above the filter cartridge 900 and connect it to the filter cartridge 900 so that the air inlet of the fan 300 is connected to the outlet 911 of the filter cartridge 900;

[0051] Turn on the fan 300, record the parameters of the first dust sensor 400 to obtain the initial dust concentration H1, and record the parameters of the second dust sensor 500 to obtain the dust concentration after filtration H2;

[0052] Calculate the actual filtration efficiency n = 1-H2 / H1, and compare the actual filtration efficiency n with the qualified filtration efficiency N. When n≧N, the filter cartridge 900 is qualified.

[0053] The above-mentioned dust removal detection method can be performed by assembling the various components and turning on the motor 310, so that the filter cartridge 900 filters the gas in the test chamber 101. At this time, the first dust sensor 400 and the second dust sensor 500 can be used to detect the gas before and after filtration respectively, and the actual filtration efficiency of the filter cartridge 900 can be obtained by calculation. At this time, it can be compared with the qualified filtration efficiency to determine whether the filter cartridge 900 is qualified. The above-mentioned dust removal detection method can quickly understand whether the filter cartridge 900 is qualified, and it is easy to disassemble and assemble, which can reduce the detection time and help improve the detection efficiency.

[0054] Optionally, the above-mentioned dust removal efficiency detection component also includes a controller 800, which is electrically connected to the fan 300, the first dust sensor 400, and the second dust sealing sensor. The controller 800 can control the switch of the fan 300 and calculate the actual filtration efficiency of the filter cartridge 900 through the first dust sensor 400 and the second dust sensor 500.

[0055] like Figure 1 and Figure 3 As shown, one embodiment discloses a test system, a filter cartridge 900 and a dust removal efficiency detection component as described above, the filter cartridge 900 includes a head cover 910 and a filter element 920 connected to each other, the outlet 911 of the filter cartridge 900 is provided on the head cover 910, the first sealing member 200 is sleeved on the outside of the head cover 910, the fan 300 is detachably connected to the head cover 910, and is used to place the filter element 920 in the test chamber 101, and the air inlet of the fan 300 is connected to the outlet 911 of the filter cartridge 900.

[0056] In the above-mentioned test system, the first sealing member 200 can be sleeved on the outside of the head cover 910, and the first sealing member 200 can be installed at the installation port on the box body 100. At this time, the filter element 920 extends into the test cavity 101 of the box body 100, and then the fan 300 can be installed on the filter cartridge 900, so that the air inlet of the fan 300 is connected with the outlet 911 of the filter cartridge 900. The dead weight of the fan 300 can press the filter cartridge 900 and the first sealing member 200 toward the box body 100, so that the sealing effect between the fan 300 and the filter cartridge 900, the filter cartridge 900 and the first sealing member 200, and the first sealing member 200 and the box body 100 is better. Dust gas can be filled into the test cavity 101, and the fan 300 can be turned on to exhaust the filter cartridge 900. , so that the dust gas is filtered by the filter element 920, and the filtered gas is discharged from the air outlet of the fan 300. The first dust sensor 400 can detect the dust concentration in the test chamber 101, and the second dust sensor 500 can detect the dust concentration of the filtered gas. By comparing the values ​​of the first dust sensor 400 and the second dust sensor 500, the filtration efficiency of the filter cartridge 900 can be understood. Since the assembly of the filter cartridge 900 and the first seal 200 and the fan 300 can be detachable, the filtration efficiency of different filter cartridges 900 can be conveniently tested, and the assembly is simple, the detection takes a short time, which is conducive to improving the detection efficiency, facilitating the detection of each batch, and preventing the occurrence of unqualified products.

[0057] In one embodiment, Figure 4 and Figure 6 As shown, a plurality of latch teeth 201 are provided on the inner wall of the first sealing member 200, and the latch teeth 201 are arranged at intervals along the axial direction of the first sealing member 200. The latch teeth 201 can clamp the first sealing member 200 and the filter cartridge 900, and at the same time, the latch teeth 201 can improve the sealing effect between the first sealing member 200 and the filter cartridge 900.

[0058] In one embodiment, Figure 5 and Figure 6 As shown, the outer wall of the head cover 910 is provided with a plurality of protrusions 912, which are spaced apart along the circumference of the head cover 910. The sum of the height of the latching teeth 201 and the height of the protrusions 912 is greater than the distance between the inner wall of the first sealing member 200 and the outer wall of the head cover 910. The latching teeth 201 can cooperate with the protrusions 912 and can interfere with the protrusions 912 during assembly, thereby making the connection between the first sealing member 200 and the head cover 910 tighter and better preventing dust leakage.

[0059] In one embodiment, Figure 5 As shown, the spacing between two adjacent latch teeth 201 is smaller than the spacing between two adjacent protrusions 912. This structure can prevent the situation where the latch teeth 201 do not contact the protrusions 912 when the spacing between the latch teeth 201 is the same as the spacing between the protrusions 912 and the latch teeth 201 and the protrusions 912 are staggered, resulting in a poor sealing effect. When the spacing between the latch teeth 201 is smaller, the latch teeth 201 can ensure contact with the protrusions 912, achieving a better sealing effect.

[0060] Alternatively, as Figure 5 As shown, the side surface of the protrusion 912 connected to the outer wall of the head cover 910 is a trapezoidal inclined surface. This can increase the contact probability between the protrusion 912 and the latching teeth 201 and prevent the protrusion 912 from not contacting the latching teeth 201.

[0061] In one embodiment, Figure 6 As shown, the outer surface of the first seal 200 is provided with a groove 202 that matches the assembly part 600, and the assembly part 600 and the latching teeth 201 are arranged on opposite sides of the first seal 200. In this way, the assembly part 600 and the first seal 200 are assembled more tightly, preventing relative movement between the assembly part 600 and the first seal 200. When the latching teeth 201 abut against the protrusion 912, the latching teeth 201 may cause the first seal 200 to deform outward toward the protrusion 912. However, the assembly part 600 can resist the first seal 200 and eliminate this deformation tendency, ensuring that the latching teeth 201 can better abut against the protrusion 912 and maintain a good sealing effect.

[0062] Alternatively, as Figure 6As shown, the first sealing member 200 includes a sleeve end 210 and an elastic end 220. The elastic end 220 and the sleeve end 210 are arranged in sequence in a direction close to the fan 300. The sleeve end 210 is sleeved outside the protrusion 912. The inner diameter of the elastic end 220 is smaller than the outer diameter of the head cover 910. Because the inner diameter of the elastic end 220 is smaller than the outer diameter of the head cover 910, the elastic end 220 will elastically deform when sleeved outside the head cover 910, so that the elastic end 220 and the head cover 910 fit tightly.

[0063] Optionally, the latch teeth 201 are provided on the inner wall of the sleeve end 210 , and can be better arranged to correspond to the protrusion 912 , thereby improving the sealing effect.

[0064] Alternatively, as Figure 4 As shown, the inner diameter of the sleeve end 210 gradually decreases as it approaches the elastic end 220. The elastic end 220 includes a first section 221, a second section 222, and a third section 223 connected in sequence. The inner diameters of the first section 221 and the third section 223 are larger than the inner diameter of the second section 222. The inner diameters of the first section 221 and the third section 223 gradually increase as they move away from the second section 222. The above structure facilitates the insertion of the head cover 910 into the first sealing member 200. When the first sealing member 200 is pressurized, the sleeve end 210 closer to the elastic end 220 has a smaller inner diameter and can fully contact the head cover 910 to ensure sealing. The above structure of the elastic end 220 ensures that the elastic end 220 is easily matched with the head cover 910 during assembly. At the same time, when the elastic end 220 is pressurized, the elastic end 220 is pressed against the protrusion 912, further reducing the gap between the first sealing member 200 and the head cover 910.

[0065] In one embodiment, Figure 3 and Figure 6 As shown, the head cover 910 is provided with a slot 913 that matches the filter element 920. The slot 913 is arranged around the outlet 911. The fan 300 includes a motor 310 and a housing 320. The housing 320 is provided with a turbine. The motor 310 and the turbine are driven in conjunction. The motor 310 is located on one side of the housing 320. The other side of the housing 320 is provided with a protrusion. The air inlet is located at the protrusion. The protrusion is used to be inserted into the outlet 911. The housing 320 is provided with an air duct. The air outlet and the air inlet are both connected to the air duct. By inserting the protrusion into the outlet 911, the fan 300 and the filter cartridge 900 can be docked, which facilitates disassembly and assembly, and is conducive to improving detection efficiency.

[0066] Alternatively, as Figure 4 and Figure 6As shown, the inner diameter of the outlet 911 gradually decreases in the direction away from the fan 300, and an annular protrusion 912 is provided on the protruding portion. An annular groove 202 matching the annular protrusion 912 is provided on the inner wall of the outlet 911. The annular protrusion 912 can be snapped into the annular groove 202 to realize the snap connection between the fan 300 and the filter cartridge 900, which is beneficial to improving the sealing effect between the fan 300 and the filter cartridge 900.

[0067] Optionally, a first flange portion is provided at the outlet 911 of the filter cartridge 900, and the protruding portion is a second flange portion that matches the first flange portion. The first flange portion and the second flange portion can be arranged relative to each other, and bolts and the like are passed through the first flange portion and the second flange portion to achieve docking between the fan 300 and the filter cartridge 900.

[0068] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0069] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

Claims

1. A dust removal efficiency detection component, characterized in that: The invention comprises a box body, a first sealing member, a fan, a first dust sensor and a second dust sensor, wherein a test chamber is provided in the box body, a mounting port communicating with the test chamber is provided on the box body, the first sealing member is used to be sleeved on the outside of the filter cartridge, the first sealing member is installed at the mounting port, and is used to allow the filter cartridge to extend into the test chamber, the fan is used to be detachably connected to the filter cartridge and is arranged above the filter cartridge, the air inlet of the fan is used to communicate with the outlet of the filter cartridge, the first dust sensor is arranged in the test chamber, and the second dust sensor is arranged at the air outlet of the fan; the material of the first sealing member is a soft material; The filter cartridge includes a head cover and a filter element connected to each other, the outlet of the filter cartridge is provided on the head cover, the first sealing member is sleeved on the outside of the head cover, the fan is detachably connected to the head cover, and is used to place the filter element in the test chamber, and the air inlet of the fan is connected to the outlet of the filter cartridge; A plurality of latch teeth are provided on the inner wall of the first sealing member, and the latch teeth are spaced apart along the axial direction of the first sealing member; The outer wall of the head cover is provided with a plurality of protrusions, which are spaced apart along the circumference of the head cover, and the sum of the height of the latch teeth and the height of the protrusions is greater than the distance between the inner wall of the first sealing member and the outer wall of the head cover; The first sealing member includes a sleeve end and an elastic end, the elastic end and the sleeve end are sequentially arranged in a direction close to the fan, the sleeve end is sleeved outside the protrusion, and the inner diameter of the elastic end is smaller than the outer diameter of the head cover; The head cover is provided with a slot matching the filter element, and the slot is arranged around the outlet. The fan includes a shell, and a protrusion is provided on the other side of the shell. The air inlet is provided at the protrusion, and the protrusion is used to be inserted into the outlet. An air duct is provided in the shell, and the air outlet and the air inlet are both connected to the air duct.

2. The dust removal efficiency detection component according to claim 1, characterized in that: It also includes an assembly part, a second seal and a third seal. The assembly part is sleeved on the outside of the first seal. The second seal and the third seal are arranged around the first seal. The second seal and the third seal are respectively located on both sides of the assembly part. The two side surfaces of the second seal respectively abut the box body and the assembly part. The two side surfaces of the third seal respectively abut the assembly part and the fan.

3. The dust removal efficiency detection component according to claim 2, characterized in that: The cross sections of the second sealing member and the third sealing member are both trapezoidal, and the inner diameters of the second sealing member and the third sealing member gradually increase in a direction away from the assembly member.

4. A dust removal efficiency testing method, characterized in that: Applying the dust removal efficiency detection component according to any one of claims 1 to 3 comprises the following steps: Sleeving the first sealing member on the outside of the filter cartridge; Inserting the filter cartridge into the test cavity through the installation opening, and installing the first sealing member at the installation opening; Place the fan above the filter cartridge and connect it to the filter cartridge so that the air inlet of the fan is connected to the outlet of the filter cartridge; Turn on the fan, record the parameters of the first dust sensor to obtain the initial dust concentration H1, and record the parameters of the second dust sensor to obtain the dust concentration after filtration H2; Calculate the actual filtration efficiency n=1-H2 / H1, compare the actual filtration efficiency n with the qualified filtration efficiency N, and when n≧N, the filter cartridge is qualified.

5. A testing system, characterized in that: It comprises a filter cartridge and a dust removal efficiency detection component as described in any one of claims 2-3.

6. The test system according to claim 5, characterized in that: The distance between two adjacent latch teeth is smaller than the distance between two adjacent protrusions.

7. The test system according to claim 5, characterized in that: A groove matching the assembly part is provided on the outer surface of the first sealing part, and the assembly part and the latching teeth are correspondingly arranged on both sides of the first sealing part.

8. The test system according to claim 5, wherein: The fan further comprises a motor, a turbine is provided in the housing, the motor is in transmission cooperation with the turbine, and the motor is provided on one side of the housing.

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