Assembling device for low-concentration sampling head

Abstract

The utility model discloses an assembling device of a low-concentration sampling head, which comprises a casing, a driving motor is arranged in the casing, a tray is arranged at the output end of the driving motor, a support frame is arranged in the casing, a pressure applying piece is arranged on the support frame, an upper cover is arranged on the casing, a guide opening is arranged on the upper cover, and the pressure applying piece is arranged on the guide opening. The inner diameter of the upper half portion of the guiding opening is gradually reduced from top to bottom, the inner diameter of the lower half portion of the guiding opening is not changed, the lower end of the guiding opening is matched with the tray, a pressure applying opening is formed in the inner side of the guiding opening and matched with the pressure applying piece, an adjusting plate is fixedly connected to the supporting frame, and a supporting plate is slidably connected to the adjusting plate. A telescopic push rod is arranged at the lower end of the supporting frame, the movable end of the telescopic push rod is connected with the supporting plate, the pressure applying piece is arranged on the supporting plate and is in sliding fit with the supporting plate, and the equipment enables the sampling head to be assembled more smoothly and stably and is suitable for assembling sampling heads of different specifications.

Description

Technical Field

[0001] The utility model relates to the technical field of samplers, and more specifically to an assembling device for a low-concentration sampling head. Background Art

[0002] With the enhancement of environmental awareness, the country's requirements for pollution emissions are becoming more and more stringent. In environmental monitoring, for the detection of particulate matter content in low-concentration smoke, the low-concentration sampling head is an important structure in the sampling equipment. Common low-concentration sampling heads include sampling heads, filter membranes, trawls and aluminum foil rings. When in use, the equipment needs to be assembled to combine the above parts into a whole.

[0003] The common assembly device is generally a film pressing device, which has a relatively simple structure. After the sampling head, filter membrane, trawl net and aluminum foil ring are assembled together in sequence, the edge of the aluminum foil ring is pressed by a pressure structure so that the aluminum foil ring presses the trawl net and filter membrane onto the sampling head.

[0004] The assembly equipment with a simple structure can only support the components but cannot fix them. The workers need to manually assemble the sampling head, filter membrane, trawl net and aluminum foil ring, and then put them into the assembly structure for pressure application, which is troublesome. In addition, when applying pressure, the sampling head and other parts need to be rotated to apply pressure to the aluminum foil ring as a whole. However, when rotating, the parts may shake, resulting in the parts being closely aligned when applying pressure, resulting in high points being squeezed, which affects the quality of the finished low-concentration sampling head. Moreover, the structure of the assembly equipment with a simple structure is often unadjustable and fixed, and cannot be adaptively adjusted according to the actual thickness of the sampling head. When facing sampling heads of different models, the thickness of the lower disc cavity and the annular aluminum foil ring of the sampling head are different. The assembly device with the same structure may not be able to assemble sampling heads of other thicknesses due to structural mismatch, and has poor adaptability. In addition, in addition to the thickness, the diameter of the sampling head may also be different. The assembly device with inconsistent structure may not even be able to place the sampling head, and has poor applicability. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the problems existing in the prior art, the utility model provides an assembly device for a low-concentration sampling head to solve the technical problems mentioned in the background technology.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an assembly device for a low-concentration sampling head, comprising a housing, a driving motor is arranged in the housing, a tray is arranged at the output end of the driving motor, a support frame is arranged in the housing, a pressure piece is arranged on the support frame, a plurality of pressure pieces are arranged and arranged around the tray, an upper cover is arranged on the housing, a guide port is opened on the upper cover, the inner diameter of the upper half of the guide port gradually decreases from top to bottom, and the inner diameter of the lower half remains unchanged, the lower end of the guide port cooperates with the tray, a pressure port is opened on the inner side of the guide port, and the pressure port cooperates with the pressure piece;

[0009] An adjustment plate is fixedly connected to the support frame, a support plate is slidably connected to the adjustment plate, a telescopic push rod is provided at the lower end of the support frame, a movable end of the telescopic push rod is connected to the support plate, and the pressure piece is arranged on the support plate and slidably cooperates with the support plate.

[0010] The utility model is further configured such that the upper cover comprises a protective cover and an adapter cover, the adapter cover is detachably connected to the protective cover, the guide port is arranged on the adapter cover, and the inner diameter of the guide port can be arranged in multiple groups to adapt to the assembly of low-concentration sampling heads of different diameters.

[0011] The utility model is further configured that a supporting ring groove is provided on the protective cover, and a fitting ring groove is provided on the lower end of the adapting cover, and the fitting ring groove cooperates with the supporting ring groove to facilitate the replacement of the adapting cover.

[0012] The utility model is further configured that a limit block is provided at the outer end of the adapter cover, a limit groove is provided on the support ring groove, and the limit block cooperates with the limit groove to ensure the stability of the adapter cover during operation.

[0013] The utility model is further configured such that a positioning plate is provided at one end of the support plate, a pressure motor is provided at one end of the positioning plate, and a pressure screw is rotatably connected at the other end, one end of the pressure screw is connected to the pressure motor, and the other end cooperates with the pressure piece to provide pressure for the pressure piece.

[0014] The utility model is further configured such that the pressure member includes a pressure frame and a pressure wheel, one end of the pressure frame is cooperatively connected to the pressure screw rod, and the other end is rotatably connected to the pressure wheel to prevent the pressure member from interfering with the aluminum foil ring when it rotates.

[0015] The utility model is further configured that a sliding block is provided at the lower end of the pressure frame, a sliding groove is provided on the support plate, and the sliding block and the sliding groove are slidably matched to ensure stable movement of the pressure frame.

[0016] The utility model is further configured such that a contact pad is provided on the tray, the contact pad cooperates with the guide port, a connecting column is provided at the lower end of the contact pad, a connecting groove is provided on the tray, and the contact pad is detachably connected to the tray through the cooperation of the connecting column and the connecting groove, so that the pressing can be carried out more stably.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides an assembly device for a low-concentration sampling head, which has the following beneficial effects:

[0019] 1. The shell of the equipment is composed of a machine case and an upper cover. The driving motor and a tray cooperate to support the sampling head and other parts. A guide port is provided for the sampling head and other parts to be placed in. When the parts are placed in the equipment, they are guided to a fixed position. Workers only need to put the parts in the order of aluminum foil ring, trawl net, filter membrane and sampling nozzle. Alignment is more convenient and the combination is more accurate. During the pressing and assembly, the position of each part will be limited to ensure the assembly quality.

[0020] 2. Supported by the support frame, coordinated by the adjustment plate and the support plate, powered by the telescopic push rod, the support plate is controlled to drive the pressure piece to move, and the working height of the pressure piece is adjusted. The pressure piece passes through the pressure port to apply pressure. By changing the height of the pressure piece, it can adapt to the assembly of low-concentration sampling heads with different thickness specifications.

[0021] 3. The upper cover is formed by the cooperation of the protective cover and the adapter cover, which drives the adapter cover of the guide port to be removed from the protective cover. The cooperation of the supporting ring groove and the fitting ring groove facilitates the removal and installation of the adapter cover, so that the adapter cover with the appropriate guide port size can be selected according to the sampling head parts of different sizes and specifications to adapt to the assembly of low-concentration sampling heads of different specifications. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This is a front structural schematic diagram of an assembly device of a low-concentration sampling head in the utility model;

[0023] Figure 2 This is a schematic diagram of the structure of the housing and the pressure member after the adapter cover is removed in the utility model;

[0024] Figure 3 This is a schematic diagram of the matching structure between the driving motor, the support frame and the pressure member in the utility model;

[0025] Figure 4 This is a schematic diagram of the bottom structure of the adapter cover in the utility model;

[0026] Figure 5 This is a schematic diagram of the matching structure of the pressure motor and the pressure member on the support plate of the utility model;

[0027] Figure 6 This is a schematic diagram of the matching structure of the driving motor and the tray in the utility model;

[0028] Figure 7 It is a schematic diagram of the bottom structure of the contact pad in the utility model.

[0029] In the figure: 1. casing; 2. driving motor; 3. tray; 4. support frame; 5. pressure member; 6. upper cover; 7. guide port; 8. pressure port; 9. adjustment plate; 10. support plate; 11. telescopic push rod; 12. protective cover; 13. adapter cover; 14. support ring groove; 15. fitting ring groove; 16. limit block; 17. limit groove; 18. positioning plate; 19. pressure motor; 20. pressure screw; 21. pressure frame; 22. pressure wheel; 23. sliding block; 24. sliding groove; 25. contact pad; 26. connecting column; 27. connecting groove. DETAILED DESCRIPTION

[0030] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present utility model will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0031] It should be noted that, unless otherwise specified, all technical and scientific terms used in this application have the same meanings as commonly understood by ordinary technicians in the technical field to which this application belongs.

[0032] In the present invention, unless otherwise specified, directions such as "up" and "down" are usually used in reference to the directions shown in the drawings, or in reference to the vertical, perpendicular or gravity direction; similarly, for ease of understanding and description, "left" and "right" are usually used in reference to the left and right shown in the drawings; "inside" and "outside" refer to the inside and outside relative to the outline of each component itself, but the above-mentioned directions are not used to limit the present invention.

[0033] See also Figure 1-3 , an assembly device for a low-concentration sampling head, comprising a housing 1, a driving motor 2 is arranged in the housing 1, a tray 3 is arranged at the output end of the driving motor 2, a support frame 4 is arranged in the housing 1, a pressure member 5 is arranged on the support frame 4, a plurality of pressure members 5 are arranged and arranged around the tray 3, an upper cover 6 is arranged on the housing 1, a guide port 7 is opened on the upper cover 6, the inner diameter of the upper half of the guide port 7 gradually decreases from top to bottom, and the inner diameter of the lower half remains unchanged, the lower end of the guide port 7 cooperates with the tray 3, a pressure port 8 is opened inside the guide port 7, and the pressure port 8 cooperates with the pressure member 5;

[0034] An adjustment plate 9 is fixedly connected to the support frame 4, and a support plate 10 is slidably connected to the adjustment plate 9. A telescopic push rod 11 is provided at the lower end of the support frame 4, and the movable end of the telescopic push rod 11 is connected to the support plate 10. The pressure piece 5 is arranged on the support plate 10 and slidably cooperates with the support plate 10.

[0035] In this embodiment, the casing 1 and the upper cover 6 cooperate to protect the interior of the device. When the device is used, the aluminum foil ring, the trawl net, the filter membrane and the sampling nozzle are placed in the guide port 7 in turn, and the inclined surface formed by the guide port 7 is used to guide the various components of the sampling head so that the aluminum foil ring, the trawl net, the filter membrane and the sampling nozzle are neatly stacked on the tray 3. When squeezing, the pressure member 5 passes through the pressure port 8 to apply pressure to the aluminum foil ring, so that the aluminum foil ring, the trawl net, the filter membrane and the sampling nozzle are combined into a sampling head. When the pressure member 5 applies pressure, the guide port 7 will also limit the various components to ensure the stability of the combination.

[0036] More specifically, when the pressure member 5 is working, the equipment is supported by the support frame 4, and the telescopic push rod 11 is controlled so that the telescopic push rod 11 pushes the support plate 10, and the support plate 10 drives the pressure member 5 to move. Under the guidance of the adjustment plate 9, the height of the pressure member 5 is adjusted to adapt to the corresponding sampling head assembly.

[0037] See also Figure 1 and Figure 2 As an implementation method for adjusting the guide structure: the upper cover 6 includes a protective cover 12 and an adapter cover 13, the adapter cover 13 is detachably connected to the protective cover 12, the guide port 7 is arranged on the adapter cover 13, and the inner diameter of the guide port 7 can be arranged in multiple groups.

[0038] Specifically, when assembling sampling heads of different specifications, the guide openings 7 of different specifications can be replaced by replacing the adapter cover 13, so that the size of the guide opening 7 is adapted to the sampling head to be assembled, thereby ensuring accurate guidance of the sampling head.

[0039] Please refer to Figure 2 and Figure 4 As a further implementation of the upper cover 6 , a supporting ring groove 14 is provided on the protective cover 12 , and a fitting ring groove 15 is provided at the lower end of the adapter cover 13 , and the fitting ring groove 15 cooperates with the supporting ring groove 14 .

[0040] Specifically, when installing the adapter cover 13, put the adapter cover 13 into the supporting ring groove 14 so that the fitting ring groove 15 is tightly matched with the supporting ring groove 14, and the device supports the adapter cover 13 through the supporting ring.

[0041] Please refer to Figure 1 , Figure 2 and Figure 4 As a further implementation of the upper cover 6 , a limit block 16 is provided at the outer end of the adapter cover 13 , a limit groove 17 is provided on the support ring groove 14 , and the limit block 16 cooperates with the limit groove 17 .

[0042] Specifically, when installing the adapter cover 13, the limit block 16 is aligned and inserted into the limit groove 17. When the device is working, the movement between the adapter cover 13 and the protective cover 12 will be limited by the cooperation between the limit block 16 and the limit groove 17 to ensure the stability of the adapter cover 13.

[0043] Please refer to Figure 5 As a further implementation of the pressure member 5: a positioning plate 18 is provided at one end of the support plate 10, a pressure motor 19 is provided at one end of the positioning plate 18, and a pressure screw rod 20 is rotatably connected at the other end. One end of the pressure screw rod 20 is connected to the pressure motor 19, and the other end cooperates with the pressure member 5.

[0044] Specifically, the pressure motor 19 is started, and under the support of the positioning plate 18, the pressure motor 19 drives the pressure screw 20 to rotate, and the pressure screw 20 cooperates with the pressure member 5 to provide power for the pressure member 5 to move the pressure member 5.

[0045] Please refer to Figure 5 As a further implementation of the pressure member 5: the pressure member 5 includes a pressure frame 21 and a pressure wheel 22, one end of the pressure frame 21 is cooperatively connected to the pressure screw rod 20, and the other end is rotatably connected to the pressure wheel 22.

[0046] Specifically, the pressure frame 21 cooperates with the pressure screw 20 to move the pressure member 5, and the pressure member 5 contacts the aluminum foil ring through the pressure wheel 22 to apply pressure to the aluminum foil ring to perform a film pressing combination operation. When the aluminum foil ring rotates with the tray 3, the pressure wheel 22 will rotate on the pressure frame 21 to adapt to the changes in the contact surface of the aluminum foil ring.

[0047] Please refer to Figure 5 As a further implementation of the pressure member 5 , a sliding block 23 is provided at the lower end of the pressure frame 21 , a sliding groove 24 is provided on the support plate 10 , and the sliding block 23 and the sliding groove 24 are slidably matched.

[0048] Specifically, when the pressure frame 21 moves, the sliding block 23 cooperates with the sliding groove 24 to limit the movement of the pressure frame 21 to ensure stable movement.

[0049] Please refer to Figure 3 , Figure 6 and Figure 7 As a further implementation of the tray 3: a contact pad 25 is provided on the tray 3, the contact pad 25 cooperates with the guide port 7, a connecting column 26 is provided at the lower end of the contact pad 25, and a connecting groove 27 is opened on the tray 3. The contact pad 25 is detachably connected to the tray 3 through the cooperation of the connecting column 26 and the connecting groove 27.

[0050] Specifically, when using the device, select the contact pad 25 that is compatible with the guide port 7, insert the connecting column 26 into the connecting groove 27, so that the contact pad 25 cooperates with the tray 3 and contacts with the sampling head component. On the one hand, the contact effect between the contact pad 25 and the sampling head component is better, and it can drive the sampling head component to rotate more stably. On the other hand, the contact pad 25 is compatible with the lower end of the guide port 7 and is inserted into the guide port 7 to support the sampling head component, thereby ensuring the limiting effect of the guide port 7 on the sampling head component and ensuring the stability of the assembly process.

[0051] In summary, when the overall device is in use or running:

[0052] When using the device, according to the specifications of the sampling head to be assembled, select the adapter cover 13 with the appropriate size of the guide port 7 and the contact pad 25 that matches the guide port 7 of the adapter cover 13. First install the contact pad 25, insert the connecting column 26 into the connecting groove 27, support the contact pad 25 through the tray 3, make the contact pad 25 match the tray 3, and then install the adapter cover 13, put the adapter cover 13 into the supporting ring groove 14, make the fitting ring groove 15 and the supporting ring groove 14 fit tightly, the device supports the adapter cover 13 through the supporting ring, and aligns the limit block 16 and inserts it into the limit groove 17. After the installation is completed, the movement between the adapter cover 13 and the protective cover 12 will be limited by the matching of the limit block 16 and the limit groove 17 to ensure the stability of the adapter cover 13.

[0053] The housing 1 and the upper cover 6 cooperate to protect the inside of the device. When the device is used to assemble the sampling head, the aluminum foil ring, the trawl net, the filter membrane and the sampling nozzle are placed in the guide port 7 in sequence. When placing, the inclined surface formed by the guide port 7 guides the various components of the sampling head so that the aluminum foil ring, the trawl net, the filter membrane and the sampling nozzle are neatly stacked on the tray 3 and contact the contact pad 25. When squeezing, the pressure member 5 is controlled to pass through the pressure port 8 to apply pressure to the aluminum foil ring, and the drive motor 2 is controlled to drive the drive motor 2 to drive the tray 3 to rotate, and the tray 3 passes through the contact pad 25. 5 drives the sampling head assembly to rotate, so that the pressure-applying member 5 applies pressure to all edges of the sampling head, so that the aluminum foil ring, the trawl net, the filter membrane and the sampling nozzle are combined into a sampling head. When the pressure-applying member 5 applies pressure, the guide port 7 will also limit the various components to ensure the stability of the combination. On the one hand, the contact effect of the contact pad 25 and the sampling head assembly is better, and the sampling head assembly can be driven to rotate more stably. On the other hand, the contact pad 25 is adapted to the lower end of the guide port 7 and inserted into the guide port 7 to support the sampling head assembly, thereby ensuring the limiting effect of the guide port 7 on the sampling head assembly and ensuring the stability of the assembly process.

[0054] When the pressure piece 5 is working, the equipment is supported by the support frame 4. The telescopic push rod 11 is first controlled to make the telescopic push rod 11 push the support plate 10, and the support plate 10 drives the pressure piece 5 to move. Under the guidance of the adjustment plate 9, the height of the pressure piece 5 is adjusted so that the working height of the pressure piece 5 is adapted to the corresponding sampling head assembly, and the pressure motor 19 is started. Under the support of the positioning plate 18, the pressure motor 19 drives the pressure screw 20 to rotate, and the pressure screw 20 cooperates with the pressure frame 21 of the pressure piece 5 to provide power for the pressure piece 5 to move the pressure piece 5. When moving, the pressure frame 21 cooperates with the sliding block 23 and the sliding groove 24 to limit the movement and ensure stable movement. The pressure piece 5 passes through the pressure port 8 and contacts the aluminum foil ring through the pressure wheel 22 to apply pressure to the aluminum foil ring to perform the film pressing combination operation. In addition, when the aluminum foil ring rotates with the contact pad 25, the pressure wheel 22 will also rotate on the pressure frame 21 to adapt to the changes in the contact surface of the aluminum foil ring.

[0055] In all the schemes mentioned above, the connection between two parts can be selected according to actual conditions by welding, bolt and nut matching connection, bolt or screw connection or other well-known connection methods, which are not described here one by one. In the above, all fixed connections are preferably welded. Although the embodiments of the utility model have been shown and described, it can be understood by ordinary technicians in this field that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the attached claims and their equivalents.

Claims

1. An assembly device for a low-concentration sampling head, comprising a housing (1), characterized in that: A driving motor (2) is arranged in the casing (1), a tray (3) is arranged at the output end of the driving motor (2), a support frame (4) is arranged in the casing (1), a pressure member (5) is arranged on the support frame (4), an upper cover (6) is arranged on the casing (1), a guide opening (7) is provided on the upper cover (6), the inner diameter of the upper half of the guide opening (7) gradually decreases from top to bottom, and the inner diameter of the lower half remains unchanged, the lower end of the guide opening (7) cooperates with the tray (3), a pressure opening (8) is provided on the inner side of the guide opening (7), and the pressure opening (8) cooperates with the pressure member (5); An adjusting plate (9) is fixedly connected to the support frame (4), a supporting plate (10) is slidably connected to the adjusting plate (9), a telescopic push rod (11) is provided at the lower end of the support frame (4), a movable end of the telescopic push rod (11) is connected to the supporting plate (10), and the pressure member (5) is arranged on the supporting plate (10) and slidably cooperates with the supporting plate (10).

2. The assembly device of a low-concentration sampling head according to claim 1, characterized in that: The upper cover (6) comprises a protective cover (12) and an adapting cover (13), wherein the adapting cover (13) is detachably connected to the protective cover (12), and the guide opening (7) is arranged on the adapting cover (13), and the inner diameter of the guide opening (7) can be arranged in multiple groups.

3. The assembly device of a low-concentration sampling head according to claim 2, characterized in that: The protective cover (12) is provided with a supporting annular groove (14), and the lower end of the adapting cover (13) is provided with a fitting annular groove (15), and the fitting annular groove (15) cooperates with the supporting annular groove (14).

4. The assembly device of a low-concentration sampling head according to claim 3, characterized in that: A limiting block (16) is provided at the outer end of the adapter cover (13), a limiting groove (17) is provided on the support ring groove (14), and the limiting block (16) cooperates with the limiting groove (17).

5. The assembly device for a low-concentration sampling head according to claim 1, characterized in that: A positioning plate (18) is provided at one end of the support plate (10), a pressure motor (19) is provided at one end of the positioning plate (18), and a pressure screw rod (20) is rotatably connected at the other end, one end of the pressure screw rod (20) is connected to the pressure motor (19), and the other end cooperates with the pressure member (5).

6. The assembly device of a low-concentration sampling head according to claim 5, characterized in that: The pressure member (5) comprises a pressure frame (21) and a pressure wheel (22); one end of the pressure frame (21) is cooperatively connected to the pressure screw rod (20), and the other end is rotationally connected to the pressure wheel (22).

7. The assembly device of a low-concentration sampling head according to claim 6, characterized in that: A sliding block (23) is provided at the lower end of the pressure frame (21), a sliding groove (24) is provided on the support plate (10), and the sliding block (23) is slidably matched with the sliding groove (24).

8. The assembly device of a low-concentration sampling head according to claim 2, characterized in that: The tray (3) is provided with a contact pad (25), the contact pad (25) cooperates with the guide port (7), a connecting column (26) is provided at the lower end of the contact pad (25), a connecting groove (27) is provided on the tray (3), and the contact pad (25) is detachably connected to the tray (3) through the cooperation between the connecting column (26) and the connecting groove (27).

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