A filter quality detection device

Abstract

The invention discloses a filter quality detection device, which relates to the technical field of filter pin detection and solves the problem of low efficiency caused by the need for manual pin detection in existing filters. The device comprises a rotating support platform, electric push rods are fixed at both ends of the top of the rotating support platform, and a clamping plate is fixed at the output end of the electric push rod. The device also comprises two side plates located on both sides of the rotating support platform, two threaded rods are rotatably installed on the inner sides of the two side plates, and a moving frame is threadedly sleeved on the outer sides of the two threaded rods, a driving member for rotating the threaded rods is installed on the side plates, a pushing member is installed in the moving frame, and a detection mechanism for detecting the shape of the filter pins is installed on the outer end of the pushing member. The invention can perform fitting detection on the pins at both ends of the filter through the mutual cooperation of the designed pushing member and the detection mechanism, and can effectively point out skewed pins. When detecting filters with a large production volume, the detection efficiency is higher.

Description

Technical Field

[0001] The invention relates to the technical field of filter pin detection, and in particular to a filter quality detection device. Background Art

[0002] The filter can effectively filter out a specific frequency point in the power line or frequencies other than the frequency point to obtain a power signal of a specific frequency, or eliminate a power signal after a specific frequency.

[0003] After the filter is produced, it is usually subjected to quality inspection, which includes inspecting the pins on the filter, mainly inspecting the shape of the pins to avoid pin skew. The existing pin inspection method is usually for quality inspectors to conduct random inspections on the products, and then inspect them by visual observation and touch. When inspecting some smaller filters, it is difficult to observe small deformations with the naked eye due to the small pins. When inspecting products with large production volumes, the inspection requires regular and quantitative sampling, which makes the inspection more troublesome and the inspection efficiency is low. For this reason, we propose a filter quality inspection device. Summary of the invention

[0004] The object of the present invention is to provide a filter quality detection device capable of efficiently detecting all filter pins, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a filter quality detection device, comprising a rotating support platform, electric push rods are fixed at both ends of the top of the rotating support platform, and a clamping plate is fixed to the output end of the electric push rod, and also includes two side plates located on both sides of the rotating support platform, two threaded rods are rotatably installed on the inner sides of the two side plates, and a movable frame is threadedly sleeved on the outer sides of the two threaded rods, a driving member for rotating the threaded rods is installed on the side plate, a pushing member is installed in the movable frame, and a detection mechanism for detecting the shape of the filter pins is installed on the outer end of the pushing member.

[0006] Preferably, the detection mechanism includes an outer plate, connecting plates are fixed at both ends of the top of the outer plate, and a detection rod is slidably inserted in one of the connecting plates, a pressure sensor is installed on the inner side of the other connecting plate, a contact piece is installed on one end of the detection rod close to the pressure sensor, an equidistant adjustment piece is installed on the inner side of the outer plate, and a plurality of detection pieces for pin shape detection are fixed in the equidistant adjustment piece, and the designed detection mechanism is used for shape detection of the filter pins.

[0007] Preferably, the equidistant adjustment member comprises a prismatic stretching frame, the outer ends of multiple rotating shafts of the prismatic stretching frame are respectively fixed to multiple detection members, one of the outermost rotating shafts in the prismatic stretching frame is fixed to the inner wall of the outer plate, and an adjustment plate is fixed to the outer end of the other outermost rotating shaft, a track plate slidably docked with the adjustment plate is fixed to the inner side of the outer plate, and a screw threadedly connected to the adjustment plate is rotatably installed in the track plate, an adjustment motor is fixed to the inner side of the outer plate, and the output end of the adjustment motor is fixed to the outer end of the screw, and the designed equidistant adjustment member is used to adjust the spacing between multiple detection members to meet the shape detection of pins with different spacings.

[0008] Preferably, the detection member includes a detection block fixed to the inner rotating shaft of the prismatic stretching frame, a track opening is opened in the detection block, and two track rods are fixed in the track opening, moving rods are slidably sleeved on the outer sides of the two track rods, and a connecting block slidably sleeved with the detection rods is fixed on the top of the moving rods, and a cap abutting against the connecting block is threadedly sleeved on the outer side of the detection rod. The designed detection member is used to detect the shape of the pin and is fixed at the inner rotating shaft of the prismatic stretching frame at the same time, so that the stretching of the prismatic stretching frame can meet the equidistant adjustment of multiple detection blocks.

[0009] Preferably, the moving rod includes a contact rod and a connecting rod, the moving rod is slidably inserted in the track opening and slidably sleeved with the two track rods, and a connecting frame is fixed on the top of the moving rod, the top of the connecting rod is fixed to the connecting block, and the bottom is slidably inserted in the connecting frame, a connecting shaft inserted with the connecting rod is fixed in the connecting frame, and a push spring for pushing the connecting rod to move is sleeved on the outside of the connecting shaft, and a tension spring fixed to the outer wall of the contact rod is sleeved on the outside of the track rod. By designing the contact rod and the connecting rod separately, the fit detection of pins of different shapes can be met, and the detection effect is better.

[0010] Preferably, a limit opening is opened at the top of the detection block corresponding to the position of the track opening, and a limit rod connected to the limit opening is fixed at the bottom of the connecting frame. The design of the detection limit opening and the limit rod enables the connecting frame to move stably.

[0011] Preferably, the pushing member includes a threaded sleeve fixedly mounted on the outer plate, a threaded shaft rotatably plugged into the movable frame is inserted into the inner thread of the threaded sleeve, a pushing motor is fixed to the outer side of the movable frame, and the output end of the pushing motor is fixed to the threaded shaft through a coupling, and two telescopic rods are fixed between the outer plate and the movable frame. Through the design of the pushing member, multiple detection members can move on the pins to meet the detection of the pin shapes.

[0012] Preferably, a docking block is fixed on the top of the outer panel, and a docking groove which is plugged into the docking block is opened on the inner side of the movable frame. The design of the docking block and the docking groove makes the pushing movement of the outer panel more stable.

[0013] Preferably, the contact piece includes a contact shaft slidably plugged into the detection rod, a plate abutting against the pressure sensor is fixed to the outer end of the contact shaft, and a contact spring for pushing the abut plate outward is sleeved on the outer side of the contact shaft. The designed contact piece is used for contacting the pressure sensor, so that the detection rod can maintain contact with the pressure sensor while changing the pressure when moving.

[0014] Preferably, the driving member includes a driving gear fixed on the top of the two threaded rods, the outer meshing sleeves of the two driving gears are provided with toothed belts, and a driving motor is fixed on the top of the side plate, the output end of the driving motor is fixed to the top of one of the threaded rods, and the driving member is used to drive the two threaded rods to rotate synchronously.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] The present invention can perform fit detection on the pins at both ends of the filter through the cooperation of the designed push piece and the detection mechanism, and can effectively point out the skewed pins. Compared with the method of direct visual observation by personnel, it can meet the requirements of detecting filters with large production volumes, and at the same time, the detection accuracy and efficiency are higher. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0018] Figure 2 It is an overall side view of the present invention;

[0019] Figure 3 This is a schematic diagram of the docking structure of a single detection mechanism and a filter of the present invention;

[0020] Figure 4 It is a schematic diagram of the connection structure of multiple detection components and multiple pins of the present invention;

[0021] Figure 5 It is a schematic diagram of the structure of the pusher and the outer plate of the present invention;

[0022] Figure 6 It is a partial cross-sectional schematic diagram of the internal structure of the detection mechanism of the present invention;

[0023] Figure 7 It is a schematic diagram of the structure of the equidistant adjustment member of the present invention;

[0024] Figure 8 for Figure 7 Enlarged view of point A in the middle;

[0025] Fig. 9 It is a schematic diagram of the position relationship structure of two adjacent detection components of the present invention;

[0026] Fig.10 for Fig. 9 Enlarged view of point B in the middle;

[0027] Fig.11 It is a schematic diagram of the position relationship between the tension spring and the moving rod of the present invention.

[0028] In the figure: 1-rotating support table; 2-electric push rod; 3-clamping plate; 4-side plate; 5-threaded rod; 6-moving frame; 7-driving member; 8-toothed belt; 9-driving motor; 10-pushing member; 11-detection mechanism; 12-outer plate; 13-connecting plate; 14-detection rod; 15-pressure sensor; 16-contact member; 17-equidistant adjustment member; 18-detection member; 19-prismatic stretching frame; 20-adjusting plate; 21-track plate; 22-screw rod; 23-adjusting motor ;24-detection block;25-track opening;26-track rod;27-moving rod;28-connecting block;29-butt cap;30-contact rod;31-connecting rod;32-connecting frame;33-connecting shaft;34-push spring;35-tension spring;36-limit opening;37-limit rod;38-threaded sleeve;39-threaded shaft;40-push motor;41-docking block;42-docking groove;43-contact shaft;44-butt plate;45-contact spring;46-driving gear. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0030] Example 1

[0031] See also Figure 1-Figure 4 A filter quality detection device shown in the figure includes a rotating support table 1, electric push rods 2 are fixed at both ends of the top of the rotating support table 1, and a clamping plate 3 is fixed at the output end of the electric push rod 2, and also includes two side plates 4 located on both sides of the rotating support table 1, two threaded rods 5 are rotatably installed on the inner sides of the two side plates 4, and the outer sides of the two threaded rods 5 are threadedly sleeved with a moving frame 6, a driving member 7 for rotating the threaded rods 5 is installed on the side plate 4, a pushing member 10 is installed in the moving frame 6, and a detection mechanism 11 for detecting the shape of the filter pins is installed on the outer end of the pushing member 10.

[0032] It should be noted that in this solution, the designed rotating support platform 1 is used to support the filter, and at the same time, the interaction between the electric push rod 2 and the two clamping plates 3 is used to clamp the filter, making its positioning more stable. At the same time, the rotating support platform 1 satisfies the rotation of the filter, making the pin detection at both ends more convenient.

[0033] It is worth noting that the outer side of the side panel 4 can be fixed by a support rod, and the threaded rod 5 designed inside the side panel 4 can rotate to drive the movable frame 6 to move up and down, and the pushing member 10 inside the movable frame 6 can meet the position adjustment of the detection member 18 for the fitting detection of the pins.

[0034] See also Figure 3-Figure 7 The detection mechanism 11 shown in the figure includes an outer plate 12, connecting plates 13 are fixed at both ends of the top of the outer plate 12, and a detection rod 14 is slidably inserted in one of the connecting plates 13, a pressure sensor 15 is installed on the inner side of the other connecting plate 13, and a contact member 16 is installed on the end of the detection rod 14 close to the pressure sensor 15, an equidistant adjustment member 17 is installed on the inner side of the outer plate 12, and a plurality of detection members 18 for pin shape detection are fixed in the equidistant adjustment member 17;

[0035] It should be noted that: the designed detection rod 14 is in contact with the pressure sensor 15, so that a pressure value can be obtained, and the detection member 18 is moved in contact with the outer wall of the pin, and the detection rod 14 can be pushed and adjusted according to the shape of the pin, so that the pressure value can be increased, thereby detecting the deformation of the pin;

[0036] It is worth noting that the pressure sensor 15 of this solution is an existing sensor device that detects pressure through contact force.

[0037] It should be noted that the contact member 16 includes a contact shaft 43 that is slidably plugged with the detection rod 14, a butt plate 44 that butts against the pressure sensor 15 is fixed to the outer end of the contact shaft 43, and a contact spring 45 for pushing the butt plate 44 outward is sleeved on the outer side of the contact shaft 43. The interaction between the designed contact shaft 43 and the contact spring 45 enables the detection rod 14 to drive the contact shaft 43 to expand and contract when moving, so that the extrusion force with the pressure sensor 15 is changed;

[0038] Among them, see Figure 6-Figure 8The equidistant adjustment member 17 shown in the figure includes a prism-shaped stretching frame 19, and the outer ends of multiple rotating shafts of the prism-shaped stretching frame 19 are respectively fixed to multiple detection members 18, one of the outermost rotating shafts in the prism-shaped stretching frame 19 is fixed to the inner wall of the outer plate 12, and the outer end of the other outermost rotating shaft is fixed with an adjustment plate 20, a track plate 21 that is slidably connected to the adjustment plate 20 is fixed to the inner side of the outer plate 12, and a screw rod 22 that is threadedly connected to the adjustment plate 20 is rotatably installed in the track plate 21, and an adjustment motor 23 is fixed to the inner side of the outer plate 12, and the output end of the adjustment motor 23 is fixed to the outer end of the screw rod 22;

[0039] It should be noted that: the designed adjustment motor 23 rotates, driving the screw rod 22 to rotate, so that the adjustment plate 20 moves along the screw rod 22, thereby driving one end of the prism stretching frame 19 to be pulled outward, thereby driving the prism stretching frame 19 to be pulled apart as a whole, and making multiple rotating shafts equidistantly distributed, so that multiple detection parts 18 are registered and distributed, meeting the detection of pins with different spacings, making it suitable for detection of filter pins of more models.

[0040] Also, see Figure 9-11 The detection member 18 shown in the figure includes a detection block 24 fixed to the rotating shaft in the prismatic stretching frame 19, a track opening 25 is opened in the detection block 24, and two track rods 26 are fixed in the track opening 25, and a moving rod 27 is slidably sleeved on the outer side of the two track rods 26, and a connecting block 28 slidably sleeved with the detection rod 14 is fixed on the top of the moving rod 27, and a cap 29 abutting against the connecting block 28 is threadedly sleeved on the outer side of the detection rod 14;

[0041] It should be noted that: the designed moving rod 27 is fitted with the outer wall of the pin, and then the moving rod 27 is driven to move along the pin by the movement of the detection block 24, so that the shape of the pin can be detected.

[0042] It is worth noting that: when inspecting pins with different spacings, after being stretched by the prismatic stretching frame 19, the inspection block 24 will be pulled apart accordingly. At this time, the connecting block 28 does not fit with the abutment cap 29. At this time, the personnel rotates the abutment cap 29 so that it fits with the moved connecting block 28 again to meet the inspection of the pins.

[0043] Among them, see Fig. 9 and Fig.10The moving rod 27 shown in the figure includes a contact rod 30 and a connecting rod 31. The moving rod 27 is slidably inserted into the track opening 25 and slidably sleeved with the two track rods 26. A connecting frame 32 is fixed on the top of the moving rod 27. The top of the connecting rod 31 is fixed to the connecting block 28, and the bottom is slidably inserted into the connecting frame 32. A connecting shaft 33 inserted into the connecting rod 31 is fixed in the connecting frame 32, and a push spring 34 for pushing the connecting rod 31 to move is sleeved on the outside of the connecting shaft 33. A tension spring 35 fixed to the outer wall of the contact rod 30 is sleeved on the outside of the track rod 26.

[0044] It should be noted that: the designed contact rod 30 is fitted with the pin, and the connecting block 28 at the top of the connecting rod 31 is sleeved with the detection rod 14. The detection block 24 is pushed and moved with the outer plate 12, so that the contact rod 30 can be fitted with the pin and moved, and the outside of the pin is moved after being fitted. When the pin is skewed in the direction of the contact rod 30, at this time, with the movement of the detection block 24, the contact rod 30 will move along the skewed detection block 24 and move along the track opening 25. At this time, it will drive the connection frame 32 to move, and the connecting rod 31 will move along the detection rod 14, pushing the abutment cap 29 on the outside of the detection rod 14, so that the contact piece 16 at the outer end of the detection rod 14 is squeezed, so that the pressure sensor 15 is squeezed so that the pressure value is too high, and the deformed pin can be detected at this time;

[0045] It is also necessary to say that: when the direction of the pin is skewed and away from the fitted contact rod 30, as the contact rod 30 moves along the pin, it will not abut against the abutment cap 29, and then the contact rod 30 is moved upward, and then the filter is rotated 180° by rotating the rotating support table 1, and then the pin is moved again to fit. At this time, the previously skewed pin will be detected by the detection piece 18 at the other end, so that the deformed pin can be inspected and repaired.

[0046] Also, see Figure 5 and Figure 6 The push member 10 shown in the figure includes a threaded sleeve 38 fixedly mounted on the outer plate 12, the threaded sleeve 38 has a threaded shaft 39 rotatably plugged with the mobile frame 6, a push motor 40 is fixed to the outer side of the mobile frame 6, and the output end of the push motor 40 is fixed to the threaded shaft 39 through a coupling, and two telescopic rods are fixed between the outer plate 12 and the mobile frame 6;

[0047] It should be noted that: by rotating the push motor 40, the threaded shaft 39 is driven to rotate, so that the threaded shaft 39 can be extended and retracted on the threaded sleeve 38, pushing the outer plate 12, and adjusting the position of the detection member 18, so that the detection member 18 can move along the outside of the pin.

[0048] Also, see Figure 1 and Figure 3The driving member 7 shown in the figure includes a driving gear 46 fixed to the top of the two threaded rods 5, a toothed belt 8 is meshed on the outer side of the two driving gears 46, and a driving motor 9 is fixed to the top of the side plate 4, and the output end of the driving motor 9 is fixed to the top of one of the threaded rods 5;

[0049] It should be noted that the threaded rod 5 is driven to rotate by the rotation of the driving motor 9 , and the two driving gears 46 and the toothed belt 8 interact with each other to achieve synchronous rotation of the two threaded rods 5 , thereby facilitating the up and down movement adjustment of the movable frame 6 .

[0050] The principle of detecting the filter pins is as follows: first, personnel take the filter to be inspected and place it on the rotating support table 1, and clamp the filter with two clamping plates 3 through the electric push rod 2. Then, the driving motor 9 rotates to drive the threaded rod 5 to rotate, so that the movable frame 6 moves down, and multiple contact rods 30 are inserted between multiple pins in sequence, and the contact rods 30 are fitted with the outer side of the pin. Under the action of the tension spring 35, the contact rod 30 can fit tightly with the outer wall of the pin. Then, as the push motor 40 drives the threaded shaft 39 to rotate, the threaded sleeve 38 drives the outer plate 12 to retreat, so that multiple contact rods 30 move along the pin. When there is a skew toward the contact rod 30, at this time, as the contact rod 30 moves, the pin that fits the skew moves and moves along the track opening 25, so that the connecting rod 31 moves along the detection rod 14, driving the stop cap 29 to move, so that the pressure sensor 15 is squeezed and a larger pressure is measured, thereby sounding an alarm to detect the skewed pin. When the skew direction of the pin is toward the side of the contact rod 30 that is away from the fit, at this time, by controlling the moving frame 6 to move up, the rotating support table 1 drives the filter to rotate 180°, and then the pin is detected through the contact rod 30, so that the contact rod 30 at the other end detects the skewed pin;

[0051] When the pins are straight, the contact rod 30 moves along the pins and does not push the detection rod 14. The pressure sensor 15 is not squeezed by external force, so that the pressure value is within a certain range and no alarm is issued.

[0052] When testing filters of different types: Since the spacing between the pins of filters of different types is different, at this time, by adjusting the rotation of the motor 23, the screw rod 22 is driven to rotate, so that the adjustment plate 20 moves outward, thereby driving the prismatic stretching frame 19 to stretch and move, and driving multiple detection parts 18 to be adjusted equidistantly to meet the fit detection of pins with different spacings. The personnel rotate multiple abutment caps 29 at the same time, so that multiple abutment caps 29 are all against the connecting block 28.

[0053] Example 2

[0054] See also Fig.10This embodiment further illustrates Example 1. A limit opening 36 is provided at the top of the detection block 24 corresponding to the position of the track opening 25, and a limit rod 37 plugged into the limit opening 36 is fixed at the bottom of the connection frame 32.

[0055] It should be noted that: through the interaction between the designed limiting opening 36 and the limiting rod 37 plugged into the limiting opening 36 , the connection frame 32 is more stable when moving, and the adjustment of the contact rod 30 is also more stable.

[0056] Example 3

[0057] See also Figure 4 This embodiment is further described for other embodiments. A docking block 41 is fixed on the top of the outer plate 12 in the figure, and a docking groove 42 which is plugged into the docking block 41 is opened on the inner side of the movable frame 6.

[0058] It should be noted that the designed matching of the docking block 41 and the docking groove 42 makes the outer plate 12 more stable when moving forward and backward, and also makes the movement of the contact rod 30 more stable.

[0059] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0060] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A filter quality detection device, comprising: A rotating support platform (1), wherein electric push rods (2) are fixed at both ends of the top of the rotating support platform (1), and a clamping plate (3) is fixed at the output end of the electric push rod (2); It is characterized by further comprising: Two side plates (4) are located on both sides of the rotating support platform (1), two threaded rods (5) are rotatably mounted on the inner sides of the two side plates (4), and a movable frame (6) is threadedly sleeved on the outer sides of the two threaded rods (5), a driving member (7) for rotating the threaded rods (5) is mounted on the side plates (4), a pushing member (10) is mounted in the movable frame (6), and a detection mechanism (11) for detecting the shape of the filter pin is mounted on the outer end of the pushing member (10); the detection mechanism (11) comprises an outer plate (12), and connecting plates (13) are fixed at both ends of the top of the outer plate (12), and one of the two connecting plates (13) is connected to the outer side of the outer plate (12). A detection rod (14) is slidably inserted in the connecting plate (13), a pressure sensor (15) is installed on the inner side of the other connecting plate (13), a contact piece (16) is installed on one end of the detection rod (14) close to the pressure sensor (15), an equidistant adjustment piece (17) is installed on the inner side of the outer plate (12), and a plurality of detection pieces (18) for pin shape detection are fixed in the equidistant adjustment piece (17), the equidistant adjustment piece (17) comprises a prism-shaped stretching frame (19), and the outer ends of a plurality of rotating shafts of the prism-shaped stretching frame (19) are respectively fixed to a plurality of detection pieces (18); the detection piece (18) comprises A detection block (24) is fixed to the inner rotating shaft of the prismatic stretching frame (19), the detection block (24) is provided with a track opening (25), and two track rods (26) are fixed in the track opening (25), the outer sides of the two track rods (26) are slidably sleeved with moving rods (27), and the tops of the moving rods (27) are fixed with connecting blocks (28) slidably sleeved with the detection rods (14), and the outer sides of the detection rods (14) are threadedly sleeved with abutting caps (29) that abut against the connecting blocks (28); the moving rods (27) include contact rods (30) and connecting rods (31), and the moving rods (27) The movable rod (27) is slidably inserted into the track opening (25) and slidably sleeved with the two track rods (26). A connecting frame (32) is fixed on the top of the movable rod (27). The top of the connecting rod (31) is fixed to the connecting block (28) and the bottom is slidably inserted into the connecting frame (32). A connecting shaft (33) inserted into the connecting rod (31) is fixed in the connecting frame (32). A push spring (34) for pushing the connecting rod (31) to move is sleeved on the outside of the connecting shaft (33). A tension spring (35) fixed to the outer wall of the contact rod (30) is sleeved on the outside of the track rod (26).

2. A filter quality detection device according to claim 1, characterized in that: One of the outermost rotating shafts in the prismatic stretching frame (19) is fixed to the inner wall of the outer plate (12), and an adjustment plate (20) is fixed to the outer end of the other outermost rotating shaft. A track plate (21) that is slidably connected to the adjustment plate (20) is fixed to the inner side of the outer plate (12), and a screw rod (22) that is threadedly connected to the adjustment plate (20) is rotatably installed in the track plate (21). An adjustment motor (23) is fixed to the inner side of the outer plate (12), and an output end of the adjustment motor (23) is fixed to the outer end of the screw rod (22).

3. A filter quality detection device according to claim 1, characterized in that: A limiting opening (36) is provided at the top of the detection block (24) at a position corresponding to the rail opening (25), and a limiting rod (37) plugged into the limiting opening (36) is fixed at the bottom of the connection frame (32).

4. A filter quality detection device according to claim 1, characterized in that: The pushing member (10) comprises a threaded sleeve (38) fixedly mounted on the outer plate (12); a threaded shaft (39) rotatably plugged into the moving frame (6) is inserted into the inner thread of the threaded sleeve (38); a pushing motor (40) is fixed to the outer side of the moving frame (6); an output end of the pushing motor (40) is fixed to the threaded shaft (39) via a coupling; and two telescopic rods are fixed between the outer plate (12) and the moving frame (6).

5. A filter quality detection device according to claim 1, characterized in that: A docking block (41) is fixed on the top of the outer plate (12), and a docking groove (42) for plugging into the docking block (41) is formed on the inner side of the movable frame (6).

6. A filter quality detection device according to claim 1, characterized in that: The contact member (16) comprises a contact shaft (43) slidably plugged with the detection rod (14); a butt plate (44) abutting against the pressure sensor (15) is fixed to the outer end of the contact shaft (43); and a contact spring (45) for pushing the butt plate (44) outward is sleeved on the outer side of the contact shaft (43).

7. A filter quality detection device according to claim 1, characterized in that: The driving member (7) comprises a driving gear (46) fixed to the top of the two threaded rods (5), the outer sides of the two driving gears (46) are meshed with a toothed belt (8), and a driving motor (9) is fixed to the top of the side plate (4), and the output end of the driving motor (9) is fixed to the top of one of the threaded rods (5).

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