Filter element detection device

Abstract

The utility model provides a filter element detection device, and relates to the technical field of detection devices. The device comprises an air inlet assembly, an air pipe, a pressure detection assembly and an auxiliary positioning assembly, the air inlet assembly is connected with the fixed end of a filter element and communicated with an external air supply mechanism, and one end of the air pipe is connected with the pressure detection assembly; the other end of the air pipe can penetrate through the breather pipe of the filter element to enter the filter element and is detachably connected with the auxiliary positioning assembly, and the auxiliary positioning assembly can be placed into the filter element from the fixed end. The air pipe can be positioned and placed at any position in the filter element under the cooperation of the auxiliary positioning assembly, so that the pressure loss of any two different detection point positions can be obtained, whether the wound filter element meets the requirement of an adsorption process or not can be judged by detecting the pressure loss, and a series of conditions such as excessive emission are avoided; the filter element detection device is simpler in overall structure, convenient to operate and lower in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of detection devices, in particular to a filter element detection device. Background Art

[0002] Most of the dichloromethane gas recovery devices currently on the market use adsorbed activated carbon fiber as the main adsorption element. Its working principle is to inject the dichloromethane-containing gas transported from the workshop into a closed container containing activated carbon fiber, so that the dichloromethane and water vapor are adsorbed on the activated carbon fiber, and then through the desorption condensation process, they are separated from the activated carbon fiber and turned into liquid for collection.

[0003] Due to prolonged adsorption and desorption, the outermost and innermost filter elements experience a decrease in their adsorption capacity due to prolonged exposure to dichloromethane. This ultimately results in the entire process failing to meet the required purification requirements for the workshop's exhaust gas, necessitating filter element replacement. However, complete sets of activated carbon fibers are relatively expensive. Whether reusing existing filter elements or purchasing new activated carbon fibers for wrapping and packaging, there is currently no reliable testing device on the market to determine the adsorption performance of wrapped activated carbon fibers.

[0004] The filter element structure used in the existing dichloromethane gas recovery device is relatively special, including a filter element body, one end of which is provided with a fixed end connected to the external structure, and a ventilation pipe for ventilation is also provided on the fixed end, and the axis of the ventilation pipe is perpendicular to the axis of the filter element.

[0005] The applicant has discovered that there are at least the following technical problems in the prior art: some performance judgments of existing activated carbon fibers are mostly calculated based on weight, and the required weight of activated carbon fibers is determined based on the amount of air that needs to be processed. The judgment mode is single, and whether the adsorption amount meets the standard can only be detected during startup. If it does not meet the standard, it will cause a series of adverse consequences such as shutdown for detection. Utility Model Content

[0006] The purpose of this utility model is to provide a filter element detection device to solve the technical problem of the lack of a good filter element detection device for use in a dichloromethane gas recovery device in the prior art. The various technical effects that can be produced by the preferred technical solution among the many technical solutions provided by this utility model are described in detail below.

[0007] To achieve the above objectives, the present invention provides the following technical solutions:

[0008] A filter element detection device includes an air inlet assembly, an air pipe, a pressure detection assembly and an auxiliary positioning assembly. The air inlet assembly is connected to the fixed end of the filter element and is communicated with an external air supply mechanism. One end of the air pipe is connected to the pressure detection assembly, and the other end of the air pipe can pass through the ventilation pipe of the filter element to enter the interior of the filter element and is detachably connected to the auxiliary positioning assembly. The auxiliary positioning assembly can be placed into the interior of the filter element from the fixed end.

[0009] Preferably, the air inlet assembly includes a fixing plate and an air inlet pipe, the fixing plate is detachably connected to the fixed end, one end of the air inlet pipe is connected to the fixing plate and the other end thereof is connected to the external air supply mechanism.

[0010] Preferably, the fixing plate is integrally connected to the air inlet duct.

[0011] Preferably, the fixing plate and the fixing end are pressed and sealed.

[0012] Preferably, the pressure detection assembly includes a pressure sensor, a wire and a paperless recorder, one end of the pressure sensor is connected to the trachea, the other end of the pressure sensor is connected to one end of the wire, and the other end of the wire is connected to the paperless recorder.

[0013] Preferably, the auxiliary positioning assembly includes an auxiliary positioning stick, which can be placed inside the filter element, and one end of the air pipe is detachably connected to the auxiliary positioning stick.

[0014] Preferably, the air tube is adhered to the outer surface of the auxiliary positioning rod.

[0015] Preferably, an auxiliary measuring portion is provided on the outer surface of the auxiliary positioning rod.

[0016] Preferably, the auxiliary measuring part is a scale line.

[0017] The beneficial effects of the utility model are as follows: under the premise of not destroying the structure of the filter element itself, the filter element detection device can make full use of the various components of the filter element, adjust the fixed end to connect to the air supply component, and adjust the ventilation pipe to pass through the air supply pipe;

[0018] Through two different operations, the end of the air pipe located inside the filter element is connected to the auxiliary positioning component at different positions twice, and the auxiliary positioning component is used to position the air pipe inside the filter element. This allows the pressure loss at any two different test points to be obtained. Since excessive pressure loss will reduce the adsorption effect, the pressure loss test can be used to determine whether the wound filter element meets the requirements of the adsorption process, thereby avoiding a series of situations such as excessive emissions.

[0019] The filter element detection device can judge the adsorption performance of the activated carbon fiber through pressure loss. The overall structure is simpler, the operation is convenient, and the cost is lower. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0021] Figure 1 It is a structural diagram of the utility model at a certain point;

[0022] Figure 2 It is a structural diagram of the utility model at another point;

[0023] In the figure, 1 is the air inlet assembly; 11 is the fixing plate; 12 is the air inlet pipe;

[0024] 2. Trachea;

[0025] 3. Pressure detection assembly; 31. Pressure sensor; 32. Wire; 33. Paperless recorder;

[0026] 4. Auxiliary positioning component; 41. Auxiliary positioning stick;

[0027] 5. Filter element; 51. Fixed end; 52. Ventilation pipe. DETAILED DESCRIPTION

[0028] To make the purpose, technical solution, and advantages of the present invention more clear, the technical solution of the present invention will be described in detail below. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments of the present invention, all other implementation methods obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0029] In the description of the present invention, it should be understood that the terms "center", "lateral", "length", "width", "height", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "side" and the like indicate directions or positional relationships based on the attached Figure 1 The orientation or positional relationship shown is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] It should also be noted that, in the description of this utility model, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood broadly. For example, they may refer to fixed, detachable, or integral connections; mechanical or electrical connections; and direct or indirect connections through an intermediary. Those skilled in the art will understand the specific meanings of these terms in this utility model depending on the specific circumstances.

[0031] Reference Figures 1 to 2 The utility model mentions a filter element detection device, including an air inlet component 1, an air pipe 2, a pressure detection component 3 and an auxiliary positioning component 4;

[0032] The air inlet assembly 1 is connected to the fixed end 51 of the filter element 5 and is in communication with the external air supply mechanism. After the external air supply mechanism is activated, it can continuously supply air to the interior of the filter element 5 through the air inlet assembly 1.

[0033] The auxiliary positioning assembly 4 can be placed into the interior of the filter element 5 from the fixed end 51. The fixed end 51 has sufficient size to ensure that the auxiliary positioning assembly 4 can pass through it.

[0034] One end of the trachea 2 is connected to the pressure detection component 3, and the other end of the trachea 2 can pass through the ventilation pipe 52 of the filter element 5 to enter the interior of the filter element 5 and is detachably connected to the auxiliary positioning component 4. The ventilation pipe 52 has sufficient size to ensure that the trachea 2 can pass through it. Due to insufficient light inside the filter element 5, it is impossible to determine the exact position of the trachea 2. Therefore, the trachea 2 entering the filter element 5 can be first passed out from the fixed end 51, and after being actually connected to the auxiliary positioning component 4 under the external environment, the auxiliary positioning component 4 and the trachea 2 are placed back into the interior of the filter element 5. The pressure detection component 3 can detect the pressure loss at the trachea 2 in real time.

[0035] Under the premise of not destroying the structure of the filter element 5, the filter element detection device can make full use of the various components of the filter element 5, adjust the fixed end 51 to connect with the air supply assembly 1, and adjust the ventilation pipe 52 to pass through the air supply pipe 2;

[0036] Through two different operations, the end of the air pipe 2 located inside the filter element 5 is connected to the auxiliary positioning component 4 at different positions twice, and the air pipe 2 is positioned inside the filter element 5 with the cooperation of the auxiliary positioning component 4, so that the pressure loss at any two different detection points can be obtained. Since excessive pressure loss will reduce the adsorption effect, the pressure loss detection can be used to determine whether the wound filter element meets the requirements of the adsorption process, thereby avoiding a series of situations such as excessive emissions.

[0037] The filter element detection device can judge the adsorption performance of the activated carbon fiber through pressure loss. The overall structure is simpler, the operation is convenient, and the cost is lower.

[0038] As an optional embodiment, the air inlet assembly 1 includes a fixed plate 11 and an air inlet pipe 12. The fixed plate 11 is detachably connected to the fixed end 51. The detachable connection makes it easier to disassemble and assemble the two. One end of the air inlet pipe 12 is connected to the fixed plate 11 and the other end is connected to the external air supply mechanism. The external air supply mechanism can supply air to the inside of the filter element 5, and the air can enter through the air inlet pipe 12.

[0039] In this embodiment, the fixing plate 11 is integrally connected to the air inlet pipe 12. This arrangement can improve the overall structural strength of the air inlet assembly 1.

[0040] The fixing plate 11 and the fixing end 51 are preferably connected in a compression-sealed manner.

[0041] As an optional embodiment, the pressure detection assembly 3 includes a pressure sensor 31, a wire 32, and a paperless recorder 33. One end of the pressure sensor 31 is connected to the trachea 2, the other end of the pressure sensor 31 is connected to one end of the wire 32, and the other end of the wire 32 is connected to the paperless recorder 33. The pressure sensor 31 can detect pressure and then transmit the detection signal to the paperless recorder 33 for intuitive display.

[0042] In this embodiment, the pressure detection component 3 is not limited to the above-mentioned combination form. Any instrument that can measure pressure loss can be applied to this application after being adaptively improved.

[0043] As an optional embodiment, the auxiliary positioning assembly 4 includes an auxiliary positioning rod 41, which can be placed inside the filter element 5. The auxiliary positioning rod 41 is preferably made of metal material and has sufficient weight. At the same time, its axis is approximately parallel to the blowing direction. The above method can effectively reduce the shaking caused by the wind.

[0044] One end of the trachea 2 is detachably connected to the auxiliary positioning rod 41. In this embodiment, the trachea 2 is preferably bonded to the outer surface of the auxiliary positioning rod 41. The bonding connection method makes it easy to adjust the specific position of the trachea 2.

[0045] As an optional embodiment, an auxiliary measuring part is provided on the outer surface of the auxiliary positioning rod 41, and the auxiliary measuring part can accurately determine the actual detection position of the trachea 2. In this embodiment, the auxiliary measuring part is preferably a scale line. In order to cooperate with the practicality of the auxiliary measuring part, the end of the auxiliary positioning rod 41 away from the fixed end 51 is preferably in contact with the end of the inside of the filter element 5 away from the fixed end 51, so that adjustment can be made from here as the zero point.

[0046] The above are merely specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any modifications or substitutions that can be easily conceived by a person skilled in the art within the technical scope disclosed in the present invention should be included within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be based on the scope of protection of the claims.

Claims

1. A filter element detection device, characterized in that: The invention comprises an air inlet assembly (1), an air pipe (2), a pressure detection assembly (3) and an auxiliary positioning assembly (4); the air inlet assembly (1) is connected to a fixed end (51) of a filter element (5) and is in communication with an external air supply mechanism; one end of the air pipe (2) is connected to the pressure detection assembly (3); the other end of the air pipe (2) can pass through a vent pipe (52) of the filter element (5) to enter the interior of the filter element (5) and is detachably connected to the auxiliary positioning assembly (4); the auxiliary positioning assembly (4) can be placed into the interior of the filter element (5) from the fixed end (51).

2. The filter element detection device according to claim 1, characterized in that: The air inlet assembly (1) comprises a fixing plate (11) and an air inlet pipe (12); the fixing plate (11) is detachably connected to the fixing end (51); one end of the air inlet pipe (12) is connected to the fixing plate (11) and the other end is connected to the external air supply mechanism.

3. The filter element detection device according to claim 2, characterized in that: The fixing plate (11) is integrally connected to the air inlet pipe (12).

4. The filter element detection device according to claim 2, characterized in that: The fixed plate (11) and the fixed end (51) are pressed and sealed.

5. The filter element detection device according to claim 1, characterized in that: The pressure detection assembly (3) comprises a pressure sensor (31), a wire (32) and a paperless recorder (33); one end of the pressure sensor (31) is connected to the trachea (2); the other end of the pressure sensor (31) is connected to one end of the wire (32); and the other end of the wire (32) is connected to the paperless recorder (33).

6. The filter element detection device according to claim 1, characterized in that: The auxiliary positioning assembly (4) comprises an auxiliary positioning stick (41), the auxiliary positioning stick (41) can be placed inside the filter element (5), and one end of the air pipe (2) is detachably connected to the auxiliary positioning stick (41).

7. The filter element detection device according to claim 6, characterized in that: The air tube (2) is bonded to the outer surface of the auxiliary positioning rod (41).

8. The filter element detection device according to claim 6, characterized in that: An auxiliary measuring portion is provided on the outer surface of the auxiliary positioning rod (41).

9. The filter element detection device according to claim 8, characterized in that: The auxiliary measuring part is a scale line.

Images