A membrane replacement device for air particle sampler

Abstract

The utility model relates to the technical field of air particle sampling, and specifically to a membrane changing device for an air particle sampler, comprising a sealed box main body, a support platform is provided inside the sealed box main body, an air inlet pipe is provided on the top of the support platform, the air inlet pipe extends to the outside of the sealed box main body at one end away from the support platform, a connecting pipe is provided inside the support platform, a sampler is provided at one end of the connecting pipe away from the air inlet pipe, and a membrane changing assembly is provided on the top of the support platform; the membrane changing assembly is used for changing the membrane of the sampler, the membrane changing assembly consists of a connecting seat, a moving block, a connecting block, a clamping block, a fixed block, a moving rod, a placing tube, a collecting tube, a fixed ring, a rotating ring and a limit block, the connecting seat is located at the top of the support platform and at the outside of the connecting tube, the moving block is slidably connected to the top of the connecting seat, compared with the existing membrane changing device, the utility model can improve the overall practicality of the membrane changing device through design.

Description

Technical Field

[0001] The utility model relates to the technical field of air particle sampling, in particular to a membrane replacement device for an air particle sampler. Background Art

[0002] At present, the commonly used ambient air particulate samplers are single filter membrane samplers. The working mode of this sampler is that after sampling for 20-23 hours a day, the old filter membrane must be removed and replaced with a new one within the remaining 4-1 hours, and then the sampler is started to continue working. If the filter membrane cannot be replaced in a short time due to special circumstances such as bad weather, traffic jams, and human factors, it will affect the continuity of air quality monitoring, causing monitoring interruptions and data loss. At the same time, it also greatly increases the labor intensity and labor maintenance costs of the staff, and its application is not widespread enough.

[0003] After searching, announcement number CN211978452U discloses an air particle sampler membrane replacement device and an air particle sampler, including a sealed box, an air inlet nozzle is fixedly provided on the upper end of the side wall of the sealed box, an upper cylinder is fixedly provided on the upper inner wall of the sealed box, and an air suction box is provided at one end of the lower inner wall of the sealed box, the air suction box is provided with a connected upper cylinder, the positions of the upper cylinder and the lower cylinder correspond, a corresponding air suction pump is provided in the air suction box, a driving motor is provided on the end of the lower inner wall of the sealed box away from the air suction box, a rotating rod is fixedly connected to the upper end of the output shaft of the driving motor, a fixing sleeve is slidably sleeved on the rotating rod, a positioning bolt is threadedly connected to the fixing sleeve, and the positioning bolt is arranged through the fixing sleeve. The utility model can realize the automatic membrane replacement operation of the air particle sampler without the need for staff to be on duty in person, thus reducing the labor intensity of the staff, saving manpower maintenance costs, and maintaining the continuity of sampling; its defect is that: when the device replaces the membrane of the sampler, only one set of filter membrane plates can be replaced. When the two sets of filter membrane plates carried by the membrane replacement device are all used up, the operator is required to replace them, resulting in a short maintenance interval and high labor costs. Therefore, it is particularly important to improve the existing membrane replacement device and design a new air particle sampler membrane replacement device to solve the above-mentioned technical defects and improve the practicability of the overall membrane replacement device. Utility Model Content

[0004] The purpose of the utility model is to provide a membrane changing device for an air particle sampler. The device can perform multiple membrane changes on the sampler through the design of the membrane changing component, increase the intervals for removing the filter membrane plate, reduce labor costs, and improve the overall practicality of the membrane changing device, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] An air particulate matter sampler membrane replacement device comprises a sealed box body, a support platform is provided inside the sealed box body, an air inlet pipe is provided on the top of the support platform, an end of the air inlet pipe away from the support platform extends to the outside of the sealed box body, a connecting pipe is provided inside the support platform, a sampler is provided on the end of the connecting pipe away from the air inlet pipe, and a membrane replacement assembly is provided on the top of the support platform;

[0007] The membrane replacement component is used for performing membrane replacement processing on the sampler.

[0008] As a preferred scheme of the utility model, the membrane changing assembly is composed of a connecting seat, a moving block, a connecting block, a clamping block, a fixed block, a moving rod, a placing tube, a collecting tube, a fixing ring, a rotating ring and a limiting block. The connecting seat is located at the top of the support platform and at the outside of the connecting tube. The moving block is slidably connected to the top of the connecting seat. The connecting block is located at one end of the moving block away from the connecting seat. Two groups of the clamping blocks are rotatably connected to one end of the connecting block away from the moving block. Two groups of the fixed blocks are rotatably connected to two ends of the connecting block close to the two groups of clamping blocks. The moving rod is slidably connected to the inside of the fixed block. The placing tube is located inside the sealing box body and above the support platform. The collecting tube is located inside the support platform and at the outside of the connecting tube. The fixing ring is fixedly connected to the inside of the placing tube and close to one end of the support platform. The rotating ring is rotatably connected to one end of the fixing ring close to the support platform. Multiple groups of the limiting blocks are slidably connected between the fixing ring and the rotating ring.

[0009] As a preferred solution of the utility model, the ends of the clamping block and the connecting block close to each other are both provided with a fitting block, and the end of the connecting block away from the clamping block is fixedly connected to the driving end of the first telescopic cylinder, and the first telescopic cylinder is located inside the moving block.

[0010] As a preferred solution of the utility model, a driving screw is rotatably connected to the top of the connecting seat and located inside the moving block. The driving screw is threadedly connected to the moving block, and the driving screw extends to the outside of the connecting seat and is fixedly connected to the driving end of the driving motor.

[0011] As a preferred solution of the utility model, one end of the moving rod away from the fixed block is rotatably connected to the clamping block, a second telescopic cylinder is provided on the top of the fixed block, and a driving end of the second telescopic cylinder is fixedly connected to the moving rod.

[0012] As a preferred solution of the utility model, a plurality of guide grooves are provided inside the rotating ring, the internal structure size of the guide grooves is designed to correspond to the external structure size of the limit block, and the rotating ring is connected to the limit block through the guide grooves.

[0013] As a preferred solution of the utility model, the end of the rotating ring away from the fixed ring is fixedly connected to a driving disk, the outer side of the driving disk is meshed with a bevel gear, and the end of the bevel gear away from the driving disk is fixedly connected to the driving end of the servo motor.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] In the utility model, through the design of the membrane changing assembly, when the sampler needs to change the membrane, the driving motor is started to drive the driving screw to rotate, so that the moving block can be displaced, driving the connecting block and the clamping block to be displaced, cooperating with the first telescopic cylinder to drive the connecting block to be displaced, and the connecting block and the clamping block are moved to the top of the collecting tube, and then started, the second telescopic cylinder drives the moving rod to reset, so that the clamping block can be opened and closed, so that the contact between the multiple groups of fitting blocks and the filter membrane plates is disconnected, so that the filter membrane plates are introduced into the interior of the collecting tube and collected, and then the connecting block and the clamping block are moved to the interior of the placing tube, and the servo motor is started to drive the bevel gear to rotate, so that the driving disk can be moved. Rotate, drive the rotating ring to rotate, when the rotating ring rotates, drive the guide groove to move, so that the guide groove can drive the limit block to move, and move the limit block to the inner side of the fixed ring and the rotating ring, so that the filter membrane plate placed inside the cylinder can fall between the connecting block and the clamping block, start the second telescopic cylinder, drive the moving rod to move, so that the clamping block can rotate and fit the surface of the filter membrane plate, move the moving block, and move the clamping block and the connecting block between the connecting pipe and the air inlet pipe, so that the filter membrane plate can be connected to the connecting pipe and the air inlet pipe, completing the membrane replacement process. Through the design of the membrane replacement component, the sampler can be replaced with multiple membranes, increasing the intervals for taking out the filter membrane plate and reducing labor costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the membrane replacement component of the utility model;

[0018] Figure 3 This is a schematic diagram of the structure of the connection block of the utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the placement tube of the utility model;

[0020] Figure 5 It is a schematic diagram of the structure of the fixed ring and the rotating ring of the utility model.

[0021] In the figure: 1. Sealing box body; 2. Support table; 3. Inlet pipe; 4. Connecting pipe; 5. Membrane changing assembly; 6. Connecting seat; 7. Moving block; 8. Connecting block; 9. Clamping block; 10. Fixed block; 11. Moving rod; 12. Placing cylinder; 13. Collecting cylinder; 14. Fixed ring; 15. Rotating ring; 16. Limiting block; 17. Fitting block; 18. Driving screw; 19. Guide groove; 20. Driving disk; 21. Bevel gear. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0023] Example:

[0024] See also Figure 1-Figure 5 , the utility model provides a technical solution:

[0025] A membrane replacement device for an air particle sampler comprises a sealed box body 1, a support platform 2 is provided inside the sealed box body 1, an air inlet pipe 3 is provided on the top of the support platform 2, an end of the air inlet pipe 3 away from the support platform 2 extends to the outside of the sealed box body 1, a connecting pipe 4 is provided inside the support platform 2, a sampler is provided on the end of the connecting pipe 4 away from the air inlet pipe 3, and a membrane replacement assembly 5 is provided on the top of the support platform 2;

[0026] The membrane replacement component 5 is used to perform membrane replacement processing on the sampler.

[0027] Furthermore, the membrane changing assembly 5 is composed of a connecting seat 6, a moving block 7, a connecting block 8, a clamping block 9, a fixed block 10, a moving rod 11, a placing tube 12, a collecting tube 13, a fixing ring 14, a rotating ring 15 and a limiting block 16. The connecting seat 6 is located at the top of the supporting platform 2 and at the outside of the connecting tube 4. The moving block 7 is slidably connected to the top of the connecting seat 6. The connecting block 8 is located at the end of the moving block 7 away from the connecting seat 6. The two groups of clamping blocks 9 are both rotatably connected to the end of the connecting block 8 away from the moving block 7. The two groups of fixing blocks 10 are both rotatably connected to the two ends of the connecting block 8 close to the two groups of clamping blocks 9. The moving rod 11 is slidably connected to the inside of the fixed block 10. The placement tube 12 is located inside the sealing box body 1 and above the support platform 2, the collection tube 13 is located inside the support platform 2 and outside the connecting tube 4, the fixing ring 14 is fixedly connected to the inside of the placement tube 12 and one end close to the support platform 2, the rotating ring 15 is rotatably connected to one end of the fixing ring 14 close to the support platform 2, and multiple groups of limit blocks 16 are slidably connected between the fixing ring 14 and the rotating ring 15. When the sampler needs to be replaced, the membrane can be replaced by the membrane replacement assembly 5. The design of the membrane replacement assembly 5 can perform multiple membrane replacements on the sampler, increase the interval for taking out the filter membrane plate, and thus reduce labor costs.

[0028] Among them, the ends of the clamping block 9 and the connecting block 8 that are close to each other are each provided with a fitting block 17, and the end of the connecting block 8 that is away from the clamping block 9 is fixedly connected to the driving end of the first telescopic cylinder, and the first telescopic cylinder is located inside the moving block 7. When the clamping block 9 and the connecting block 8 come into contact with the filter membrane plate, the clamping block 9 and the connecting block 8 can fit the surface of the filter membrane plate through the fitting block 17, and the first telescopic cylinder is started to drive the connecting block 8 to move, so that the clamping block 9 can move.

[0029] Secondly, a driving screw 18 is rotatably connected to the top of the connecting seat 6 and located inside the moving block 7. The driving screw 18 is threadedly connected to the moving block 7, and the driving screw 18 extends to the outside of the connecting seat 6 and is fixedly connected to the driving end of the driving motor. The driving screw 18 is threadedly connected to the moving block 7, and the driving motor is started to drive the driving screw 18 to rotate, so that the moving block 7 can be displaced, driving the connecting block 8 and the clamping block 9 to be displaced.

[0030] Furthermore, one end of the moving rod 11 away from the fixed block 10 is rotatably connected to the clamping block 9. A second telescopic cylinder is provided on the top of the fixed block 10. The driving end of the second telescopic cylinder is fixedly connected to the moving rod 11. The moving rod 11 is rotatably connected to the clamping block 9. The second telescopic cylinder is started to drive the moving rod 11 to move, so that the clamping block 9 can rotate and fit the surface of the filter membrane plate.

[0031] Furthermore, a plurality of guide grooves 19 are provided inside the rotating ring 15, and the internal structure size of the guide groove 19 is designed to correspond to the external structure size of the limit block 16. The rotating ring 15 is connected to the limit block 16 via the guide groove 19, and the limit block 16 is slidably connected to the guide groove 19. When the rotating ring 15 rotates and drives the guide groove 19 to move, the guide groove 19 can drive the limit block 16 to move.

[0032] Furthermore, one end of the rotating ring 15 away from the fixed ring 14 is fixedly connected to the driving disk 20, and the outer side of the driving disk 20 is meshingly connected to the bevel gear 21, and the end of the bevel gear 21 away from the driving disk 20 is fixedly connected to the driving end of the servo motor. When the servo motor is started, the bevel gear 21 is driven to rotate, so that the driving disk 20 can rotate, driving the rotating ring 15 to rotate.

[0033] In this embodiment, the implementation scenario is specifically as follows: in actual use, when the sampler needs to change the membrane, the drive motor is started to drive the drive screw 18 to rotate, so that the moving block 7 can be displaced, driving the connecting block 8 and the clamping block 9 to be displaced, and cooperating with the first telescopic cylinder to drive the connecting block 8 to be displaced, and the connecting block 8 and the clamping block 9 are moved to the top of the collecting tube 13, and then started, the second telescopic cylinder drives the moving rod 11 to reset, so that the clamping block 9 can be opened and closed, so that the contact between the multiple groups of bonding blocks 17 and the filter membrane plate is disconnected, so that the filter membrane plate is introduced into the interior of the collecting tube 13, and collected, and then the connecting block 8 and the clamping block 9 are moved to the interior of the placing tube 12, and the servo motor is started to drive the bevel gear 21 to rotate, so that the driving disk 20 can rotate, and the rotating ring 15 is driven to rotate. When 15 rotates and drives the guide groove 19 to move, the guide groove 19 can drive the limit block 16 to move, and the limit block 16 is moved to the inner side of the fixed ring 14 and the rotating ring 15, so that the filter membrane plate placed inside the tube 12 can fall between the connecting block 8 and the clamping block 9, and the second telescopic cylinder is started to drive the moving rod 11 to move, so that the clamping block 9 can rotate and fit the surface of the filter membrane plate, and the moving block 7 is displaced, and the clamping block 9 and the connecting block 8 are moved between the connecting pipe 4 and the air inlet pipe 3, so that the filter membrane plate can be connected to the connecting pipe 4 and the air inlet pipe 3, and the membrane replacement process is completed. Through the design of the membrane replacement component 5, the sampler can be subjected to multiple membrane replacement processes, the interval for taking out the filter membrane plate is increased, and the labor cost is reduced. Compared with the existing membrane replacement device, the utility model can improve the overall practicality of the membrane replacement device through design.

[0034] Although the 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 membrane replacement device for an air particle sampler, comprising a sealed box body (1), characterized in that: A support platform (2) is provided inside the sealed box body (1), an air inlet pipe (3) is provided on the top of the support platform (2), an end of the air inlet pipe (3) away from the support platform (2) extends to the outside of the sealed box body (1), a connecting pipe (4) is provided inside the support platform (2), a sampler is provided on the end of the connecting pipe (4) away from the air inlet pipe (3), and a membrane replacement assembly (5) is provided on the top of the support platform (2); The membrane replacement component (5) is used to perform membrane replacement processing on the sampler.

2. The membrane replacement device for an air particle sampler according to claim 1, characterized in that: The membrane replacement assembly (5) is composed of a connecting seat (6), a moving block (7), a connecting block (8), a clamping block (9), a fixed block (10), a moving rod (11), a placement tube (12), a collecting tube (13), a fixed ring (14), a rotating ring (15) and a limit block (16); the connecting seat (6) is located at the top of the support platform (2) and at the outside of the connecting tube (4); the moving block (7) is slidably connected to the top of the connecting seat (6); the connecting block (8) is located at the end of the moving block (7) away from the connecting seat (6); the two groups of clamping blocks (9) are both rotatably connected to the end of the connecting block (8) away from the moving block (7); the two groups of fixed blocks (10) The movable rod (11) is slidably connected to the inside of the fixed block (10); the placement tube (12) is located inside the sealing box body (1) and above the support platform (2); the collecting tube (13) is located inside the support platform (2) and outside the connecting tube (4); the fixed ring (14) is fixedly connected to the inside of the placement tube (12) and close to one end of the support platform (2); the rotating ring (15) is rotatably connected to one end of the fixed ring (14) close to the support platform (2); and the plurality of groups of limit blocks (16) are slidably connected between the fixed ring (14) and the rotating ring (15).

3. The membrane replacement device for an air particle sampler according to claim 2, characterized in that: The ends of the clamping block (9) and the connecting block (8) that are close to each other are each provided with a fitting block (17), and the end of the connecting block (8) that is away from the clamping block (9) is fixedly connected to the driving end of a first telescopic cylinder, and the first telescopic cylinder is located inside the moving block (7).

4. The membrane replacement device for an air particle sampler according to claim 2, characterized in that: A driving screw (18) is rotatably connected to the top of the connecting seat (6) and located inside the moving block (7); the driving screw (18) is threadedly connected to the moving block (7); and the driving screw (18) extends to the outside of the connecting seat (6) and is fixedly connected to the driving end of the driving motor.

5. The membrane replacement device for an air particle sampler according to claim 2, characterized in that: One end of the moving rod (11) away from the fixed block (10) is rotatably connected to the clamping block (9), and a second telescopic cylinder is provided on the top of the fixed block (10), and a driving end of the second telescopic cylinder is fixedly connected to the moving rod (11).

6. The membrane replacement device for an air particle sampler according to claim 2, characterized in that: The rotating ring (15) has a plurality of guide grooves (19) formed inside, the internal structure size of the guide grooves (19) being designed to correspond to the external structure size of the limit block (16), and the rotating ring (15) is connected to the limit block (16) via the guide grooves (19).

7. The membrane replacement device for an air particle sampler according to claim 6, characterized in that: One end of the rotating ring (15) away from the fixed ring (14) is fixedly connected to a driving disk (20), the outer side of the driving disk (20) is meshingly connected to a bevel gear (21), and one end of the bevel gear (21) away from the driving disk (20) is fixedly connected to a driving end of a servo motor.

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