CN220136761U - Anti-suck-back device for air sampler - Google Patents
Anti-suck-back device for air sampler Download PDFInfo
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- CN220136761U CN220136761U CN202321076778.1U CN202321076778U CN220136761U CN 220136761 U CN220136761 U CN 220136761U CN 202321076778 U CN202321076778 U CN 202321076778U CN 220136761 U CN220136761 U CN 220136761U
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- Prior art keywords
- suck
- plate
- air sampler
- fixedly arranged
- back box
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- 238000007789 sealing Methods 0.000 claims abstract description 38
- 230000002265 prevention Effects 0.000 claims description 7
- 239000003381 stabilizer Substances 0.000 claims description 7
- 230000000149 penetrating effect Effects 0.000 claims description 3
- 230000033001 locomotion Effects 0.000 abstract description 3
- 230000006835 compression Effects 0.000 description 6
- 238000007906 compression Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 3
- 238000005070 sampling Methods 0.000 description 3
- 230000007774 longterm Effects 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model relates to the technical field of air samplers and provides an anti-suck-back device for an air sampler, which comprises an air sampler main body, wherein one side of the air sampler main body is fixedly connected with an anti-suck-back box through a pipeline; one side of the anti-suck-back box is detachably connected with a sealing plate, and rectangular plates are fixedly arranged on two sides of the sealing plate; an elastic component is arranged on one side of the anti-suck-back box, which is far away from the sealing plate, a connecting plate is connected to the outer side wall of the elastic component in a sliding clamping manner, a strip-shaped plate is fixedly arranged on one side of the connecting plate, a round rod is fixedly arranged on one side of the strip-shaped plate, and the round rod is connected with the rectangular plate in a clamping manner; the inside fixed mounting who prevents the box of suck-back has the backup pad, through elastic component, connecting plate, strip shaped plate, circular pole and the rectangular plate that set up, presses the connecting plate and passes through elastic component slip, and the connecting plate drives strip shaped plate motion, makes circular pole break away from the rectangular plate to be convenient for take off the closing plate and maintain the inside subassembly of suck-back of preventing of box.
Description
Technical Field
The utility model relates to the technical field of air samplers, in particular to an anti-suck-back device for an air sampler.
Background
The air sampler is called an air suction smoke-sensing fire detector or an air sampling fire detector, and the air in the protection area is sucked into the detector through the air sampling tube for analysis so as to early warn the fire.
The retrieved Chinese patent number CN212621727U provides a portable constant-current air sampler, which mainly comprises a sampler body, a bottom frame, a height adjusting structure, a bearing box and a suck-back prevention component. The chassis is fixedly provided with a driving motor, the power output end of the driving motor is connected with a screw rod, the screw rod is connected with a mounting seat in a screwed mode, the mounting seat can move along the axis direction of the screw rod due to the fact that the driving motor drives the screw rod to rotate, the height adjusting mechanism comprises a scissor-type connecting rod assembly formed by hinging a plurality of connecting rods, the bottom ends of the connecting rod assembly are respectively connected to the chassis and the mounting seat, and the bottom ends of the connecting rod assembly are connected to the top ends of the connecting rod assembly to form a bearing foundation of the air sampler. The anti-suck-back component is arranged on the air inlet pipeline. The foldability of high regulation structure for this portable constant current air sampler takes up an area of little after folding, easily carries, prevents simultaneously that the subassembly of suck-backing can guarantee the accuracy to the final analysis result of sampling gas.
However, the air sampler described above has been found in the implementation related art to have the following problems: the air sampler in the prior art has the anti-suck-back effect, and the anti-suck-back assembly is inconvenient to maintain after long-term use, so the utility model designs an anti-suck-back device for the air sampler to solve the problems.
Disclosure of Invention
The utility model provides a suck-back prevention device for an air sampler, which solves the problem that a suck-back prevention component in the related art is inconvenient to maintain after long-term use.
The technical scheme of the utility model is as follows: the anti-suck-back device for the air sampler comprises an air sampler main body, wherein one side of the air sampler main body is fixedly connected with an anti-suck-back box through a pipeline;
a sealing plate is detachably connected to one side of the anti-suck-back box, and rectangular plates are fixedly arranged on two sides of the sealing plate;
an elastic component is arranged on one side of the anti-suck-back box, which is far away from the sealing plate, a connecting plate is connected to the outer side wall of the elastic component in a sliding clamping manner, a strip-shaped plate is fixedly arranged on one side of the connecting plate, a round rod is fixedly arranged on one side of the strip-shaped plate, and the round rod is connected with the rectangular plate in a clamping manner;
the inside fixed mounting of anti-suck-back box has the backup pad, one side slip joint of backup pad has the baffle, one side fixedly connected with spring one of baffle, one end of spring one with one side fixed connection of backup pad.
Preferably, the elastic component comprises a sliding rod and a second spring, the sliding rod and the second spring are respectively positioned on one side of the anti-suck-back box, the connecting plate is in sliding clamping connection with the sliding rod, and one end of the second spring is fixedly connected with the connecting plate.
Preferably, two groups of circular cylinders are arranged on one side of the supporting plate in a penetrating way, and the two groups of circular cylinders are oppositely arranged.
Preferably, two groups of stabilizer bars are fixedly arranged on one side of the baffle plate, and the two groups of stabilizer bars are in sliding clamping connection with the two groups of circular cylinders.
Preferably, a convex ring is fixedly arranged on one side of the inner wall of the anti-suck-back box, an annular frame is fixedly arranged on one side of the baffle plate, and the annular frame is clamped with the convex ring.
Preferably, the two sides of the anti-suck-back box are fixedly provided with auxiliary cylinders, and the connecting plates are in sliding clamping connection with the auxiliary cylinders.
Preferably, a sealing groove is formed in one side of the sealing plate, and a sealing gasket is inlaid in the sealing plate through the sealing groove.
Preferably, a convex frame is fixedly arranged on one side of the anti-suck-back box, and the convex frame is clamped with the sealing groove.
The working principle and the beneficial effects of the utility model are as follows:
1. according to the anti-suck-back box, the elastic assembly, the connecting plate, the strip-shaped plate, the round rod and the rectangular plate are arranged, the connecting plate is pressed to slide through the elastic assembly, the connecting plate drives the strip-shaped plate to move, the round rod is separated from the rectangular plate, and therefore the sealing plate is convenient to take down to maintain the anti-suck-back assembly inside the anti-suck-back box;
2. according to the utility model, the baffle, the first spring and the convex ring are arranged on the annular frame, gas enters the anti-suck-back box after the air sampler main body operates, the gas impacts the baffle to enter the air sampler main body, and when the air flow moves reversely, the first spring resets the baffle, and the annular frame is clamped with the convex ring, so that the anti-suck-back effect is achieved.
Drawings
The utility model will be described in further detail with reference to the drawings and the detailed description.
FIG. 1 is a schematic perspective view of a suck-back prevention box according to the present utility model;
FIG. 2 is a schematic overall perspective view of the present utility model;
FIG. 3 is a schematic perspective view of a sealing plate according to the present utility model;
fig. 4 is an enlarged schematic view of the structure of fig. 2 a according to the present utility model.
In the figure: 1. an air sampler body; 2. a suck-back prevention box; 3. a sealing plate; 4. a baffle; 5. a support plate; 6. a first spring; 7. an elastic component; 71. a slide bar; 72. a second spring; 8. a connecting plate; 9. a strip-shaped plate; 10. a circular rod; 11. a rectangular plate; 12. a circular cylinder; 13. a stabilizer bar; 14. a convex ring; 15. an annular frame; 16. an auxiliary cylinder; 17. a convex frame; 18. and (5) sealing the groove.
Detailed Description
The technical solutions of the embodiments of the present utility model will be clearly and completely described below in conjunction with the embodiments of the present utility model, and it is apparent that the described embodiments are only some embodiments of the present utility model, not all embodiments. All other embodiments, which can be made by one of ordinary skill in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
Referring to fig. 1-4, the present utility model provides a technical solution of a suck-back prevention device for an air sampler: the anti-suck-back device comprises an air sampler main body 1, wherein one side of the air sampler main body 1 is fixedly connected with an anti-suck-back box 2 through a pipeline; one side of the anti-suck-back box 2 is detachably connected with a sealing plate 3, and rectangular plates 11 are fixedly arranged on two sides of the sealing plate 3; the side, far away from the sealing plate 3, of the anti-suck-back box 2 is provided with an elastic component 7, a connecting plate 8 is slidably clamped on the outer side wall of the elastic component 7, the elastic component 7 comprises a sliding rod 71 and a second spring 72, the sliding rod 71 and the second spring 72 are respectively positioned on one side of the anti-suck-back box 2, the connecting plate 8 is slidably clamped with the sliding rod 71, one end of the second spring 72 is fixedly connected with the connecting plate 8, one side of the connecting plate 8 is fixedly provided with a strip-shaped plate 9, one side of the strip-shaped plate 9 is fixedly provided with a circular rod 10, and the circular rod 10 is clamped with the rectangular plate 11; a supporting plate 5 is fixedly arranged in the anti-suck-back box 2, one side of the supporting plate 5 is in sliding clamping connection with a baffle plate 4, one side of the baffle plate 4 is fixedly connected with a first spring 6, and one end of the first spring 6 is fixedly connected with one side of the supporting plate 5;
when the air sampler main body 1 operates, gas enters the anti-suck-back box 2 through a pipeline, the gas impacts the baffle 4, the baffle 4 moves to compress the first compression spring 6, the gas enters the air sampler main body 1 to be detected, when the air flow reversely flows, the first compression spring 6 resets the baffle 4 to play a role in anti-suck-back, the connecting plate 8 is pressed to slide the second compression spring 72 through the sliding rod 71, the connecting plate 8 drives the strip-shaped plate 9 to move, the round rod 10 is separated from the rectangular plate 11, and the sealing plate 3 is taken down to maintain an anti-suck-back component inside the anti-suck-back box 2.
Specifically, two groups of circular cylinders 12 are arranged on one side of the supporting plate 5 in a penetrating manner, the two groups of circular cylinders 12 are arranged oppositely, two groups of stabilizing rods 13 are fixedly arranged on one side of the baffle 4, and the two groups of stabilizing rods 13 are in sliding clamping connection with the two groups of circular cylinders 12;
the baffle 4 drives the stabilizer bar 13 to slide through the circular cylinder 12 when moving, thereby increasing the stability.
Specifically, a convex ring 14 is fixedly arranged on one side of the inner wall of the anti-suck-back box 2, an annular frame 15 is fixedly arranged on one side of the baffle 4, and the annular frame 15 is clamped with the convex ring 14;
after the convex ring 14 is clamped with the annular frame 15, the reverse suction condition is prevented.
Specifically, the two sides of the anti-suck-back box 2 are fixedly provided with auxiliary cylinders 16, and the connecting plate 8 is in sliding clamping connection with the auxiliary cylinders 16;
the stability is increased by sliding the auxiliary cylinder 16 in cooperation with the movement of the connecting plate 8.
Specifically, a sealing groove 18 is formed in one side of the sealing plate 3, a sealing gasket is inlaid in the sealing plate 3 through the sealing groove 18, a convex frame 17 is fixedly arranged on one side of the anti-suck-back box 2, and the convex frame 17 is clamped with the sealing groove 18;
when in daily use, the convex frame 17 is clamped with the sealing groove 18, and the sealing gasket is matched, so that the sealing plate 3 and the anti-suck-back box 2 are sealed.
The working principle and the using flow of the utility model are as follows: firstly, when the air sampler main body 1 is in operation, gas enters the anti-suck-back box 2 through a pipeline, the gas impacts the baffle plate 4, the baffle plate 4 compresses the first compression spring 6 to drive the stabilizer bar 13 to slide through the circular cylinder 12, the convex ring 14 is separated from the annular frame 15, the gas enters the air sampler main body 1 for detection, and when the air flows reversely, the baffle plate 4 is reset by the first compression spring 6, and the baffle plate 4 drives the annular frame 15 to be clamped with the convex ring 14, so that the anti-suck-back effect is achieved;
pressing connecting plate 8 through slide bar 71 slip compression spring two 72, connecting plate 8 drives strip shaped plate 9 motion for circular pole 10 breaks away from rectangular plate 11, takes off closing plate 3 and makes flange 17 and seal groove 18 separation, thereby is convenient for prevent that the inside anti-suck-back subassembly of box 2 is maintained.
The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, alternatives, and improvements that fall within the spirit and scope of the utility model.
Claims (8)
1. The anti-suck-back device for the air sampler comprises an air sampler main body (1), and is characterized in that one side of the air sampler main body (1) is fixedly connected with an anti-suck-back box (2) through a pipeline;
one side of the anti-suck-back box (2) is detachably connected with a sealing plate (3), and rectangular plates (11) are fixedly arranged on two sides of the sealing plate (3);
an elastic component (7) is arranged on one side, far away from the sealing plate (3), of the anti-suck-back box (2), a connecting plate (8) is connected to the outer side wall of the elastic component (7) in a sliding clamping mode, a strip-shaped plate (9) is fixedly arranged on one side of the connecting plate (8), a round rod (10) is fixedly arranged on one side of the strip-shaped plate (9), and the round rod (10) is connected with the rectangular plate (11) in a clamping mode;
the anti-suck-back box is characterized in that a supporting plate (5) is fixedly arranged in the anti-suck-back box (2), a baffle (4) is connected to one side of the supporting plate (5) in a sliding clamping mode, a first spring (6) is fixedly connected to one side of the baffle (4), and one end of the first spring (6) is fixedly connected with one side of the supporting plate (5).
2. The anti-suck-back device for the air sampler according to claim 1, wherein the elastic assembly (7) comprises a sliding rod (71) and a second spring (72), the sliding rod (71) and the second spring (72) are respectively located at one side of the anti-suck-back box (2), the connecting plate (8) is in sliding clamping connection with the sliding rod (71), and one end of the second spring (72) is fixedly connected with the connecting plate (8).
3. The anti-suck-back device for the air sampler according to claim 1, wherein two groups of circular cylinders (12) are arranged on one side of the supporting plate (5) in a penetrating way, and the two groups of circular cylinders (12) are oppositely arranged.
4. A suck-back prevention device for an air sampler according to claim 3 and characterized in that two groups of stabilizer bars (13) are fixedly arranged on one side of the baffle plate (4), and the two groups of stabilizer bars (13) are in sliding clamping connection with the two groups of circular cylinders (12).
5. The anti-suck-back device for the air sampler according to claim 1, wherein a convex ring (14) is fixedly arranged on one side of the inner wall of the anti-suck-back box (2), an annular frame (15) is fixedly arranged on one side of the baffle plate (4), and the annular frame (15) is clamped with the convex ring (14).
6. The anti-suck-back device for the air sampler according to claim 1, wherein auxiliary cylinders (16) are fixedly arranged on two sides of the anti-suck-back box (2), and the connecting plate (8) is in sliding clamping connection with the auxiliary cylinders (16).
7. The anti-suck-back device for the air sampler according to claim 1, wherein a sealing groove (18) is formed in one side of the sealing plate (3), and the sealing plate (3) is inlaid with a sealing gasket through the sealing groove (18).
8. The anti-suck-back device for the air sampler according to claim 7, wherein a protruding frame (17) is fixedly arranged on one side of the anti-suck-back box (2), and the protruding frame (17) is clamped with the sealing groove (18).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321076778.1U CN220136761U (en) | 2023-05-06 | 2023-05-06 | Anti-suck-back device for air sampler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321076778.1U CN220136761U (en) | 2023-05-06 | 2023-05-06 | Anti-suck-back device for air sampler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220136761U true CN220136761U (en) | 2023-12-05 |
Family
ID=88961259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321076778.1U Active CN220136761U (en) | 2023-05-06 | 2023-05-06 | Anti-suck-back device for air sampler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220136761U (en) |
-
2023
- 2023-05-06 CN CN202321076778.1U patent/CN220136761U/en active Active
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