Portable constant-current gas sampler

Abstract

The utility model relates to the technical field of constant-current gas samplers, and discloses a portable constant-current gas sampler which comprises a moving seat, a plurality of moving wheels are fixedly connected to the bottom end of the moving seat, a grip is fixedly connected to the side end of the moving seat, a clamping assembly is arranged at the outer end of a rotating assembly, and the clamping assembly is fixedly connected to the bottom end of the moving seat. According to the constant-current gas sampler disclosed by the utility model, the rotating assembly rotates to drive the clamping assembly to clamp and fix the constant-current gas sampler body, and the rotating assembly is fixed through the limiting assembly, so that the situation that the clamping assembly moves due to rotation of the rotating assembly is avoided; the constant-current gas sampler has the advantages that the constant-current gas sampler body can be conveniently carried, transported and moved by pulling the grip to be matched with the moving wheels, the constant-current gas sampler body is prevented from being more labor-saving compared with the constant-current gas sampler body carried by hands, and accordingly, arm ache of personnel is not easy to cause.

Description

Technical Field

[0001] This utility model relates to the field of constant flow gas sampler technology, specifically to a portable constant flow gas sampler. Background Technology

[0002] In operation, a constant flow gas sampler uses an air pump as the sampling power source (possibly a powerful pump such as a positive displacement vane pump made with an imported DC brushless motor, offering high negative pressure, stable flow rate, and long operating time). Air is pumped into the sampling bottle at a constant flow rate for a specific period. After entering the sampler, the air first passes through a related gas path structure, which may involve a device similar to a constant flow maintenance unit. In some constant flow sampler designs, the airflow output from the gas source module enters a specific structure (such as the large-diameter housing at the top of a conical piston) via a flexible air tube, then passes through the gap between the conical piston and other components into a small-diameter housing, before finally entering the air sampling bottle. The conical piston automatically adjusts its position under the action of air pressure and spring force. When the air pressure in the large-diameter housing reaches equilibrium with the spring force of the cylindrical spring, the position of the conical piston remains constant, ensuring a constant flow rate into the small-diameter housing and thus the sampling bottle. If the air flow is too large, causing the pressure to rise to a set value, the overflow valve will automatically open to release pressure, ensuring a constant flow rate. After the harmful components in the air have fully reacted with the test solution in the sampling bottle, the reacted solution is sent to the detector for testing, thereby obtaining the test results such as the concentration of the relevant gas components.

[0003] For example, the ZD-1013 constant flow gas sampler from Zidian Scientific Instruments is easy to carry due to its case and handle. However, in actual use, the rear-mounted battery results in an unreasonable center of gravity distribution, which can easily cause arm pain when held for a long time. Therefore, a portable constant flow gas sampler is needed to solve the above problems. Utility Model Content

[0004] The purpose of this utility model is to provide a portable constant flow gas sampler, which solves the problem that the existing constant flow gas sampler, model ZD-1013, is convenient to carry through its casing and handle, but in actual use, the rear-mounted battery results in an unreasonable center of gravity distribution, and prolonged hand-holding can easily cause arm pain.

[0005] This utility model provides the following technical solution: a portable constant flow gas sampler, including a movable base, a plurality of movable wheels fixedly connected to the bottom end of the movable base, a handle fixedly connected to the side end of the movable base, a straight groove opened at the top end of the movable base, a rotating component provided inside the straight groove, a clamping component provided at the outer end of the rotating component, a constant flow gas sampler body provided inside the clamping component, and a rectangular groove opened at the side end of the movable base, a limiting component for fixing the rotating component provided inside the rectangular groove.

[0006] As a preferred embodiment of the above technical solution, the rotating assembly includes a bidirectional threaded rod, which is rotatably disposed between the inner end of the straight groove and the outer end of the movable seat. A knob is fixedly connected to the side end of the bidirectional threaded rod, and a plurality of insertion holes are provided on the side end of the knob.

[0007] As a preferred embodiment of the above technical solution, the clamping assembly includes two rectangular sleeves, both of which are threadedly connected to the outer end of a bidirectional threaded rod, and a clamping plate is fixedly connected to the top of each of the two rectangular sleeves.

[0008] As a preferred embodiment of the above technical solution, each of the clamps is provided with a holding groove on its side end, and a number of rubber strips are fixedly connected to the inner wall of each holding groove.

[0009] As a preferred embodiment of the above technical solution, the constant flow gas sampler body is located between two holding tanks.

[0010] As a preferred embodiment of the above technical solution, the limiting component includes a round rod, which is fixedly connected between the inner sides of the rectangular groove. A spring is sleeved on the outer end of the round rod, and a sleeve plate is sleeved on the outer end of the round rod. One end of the spring is fixedly connected to the inner side of the rectangular groove, and the other end of the spring is fixedly connected to the side end of the sleeve plate. A plug rod is fixedly connected to the side end of the sleeve plate.

[0011] As a preferred embodiment of the above technical solution, the insertion rod is adapted to each insertion hole, and a pull rod is fixedly connected to the side end of the sleeve plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention uses a rotating component to drive a clamping component to clamp and fix the constant flow gas sampler body. A limiting component fixes the rotating component to prevent the clamping component from moving due to rotation of the rotating component, thus preventing the clamping force of the clamping component from loosening. Then, by pulling the handle and using the moving wheels, the constant flow gas sampler body can be easily carried and transported, which is less strenuous than carrying it by hand, and thus less likely to cause arm pain. Attached Figure Description

[0014] Figure 1 This is an exploded structural diagram of a portable constant flow gas sampler.

[0015] Figure 2 A three-dimensional structural diagram of a portable constant flow gas sampler. Figure 1 ;

[0016] Figure 3 for Figure 2 A magnified schematic diagram of the structure of part A in the diagram;

[0017] Figure 4 A three-dimensional structural diagram of a portable constant flow gas sampler. Figure 2 .

[0018] In the diagram: 1. Movable base; 101. Straight groove; 102. Rectangular groove; 103. Movable wheel; 104. Handle; 2. Rotating assembly; 201. Bidirectional threaded rod; 202. Knob; 203. Insertion hole; 3. Clamping assembly; 301. Rectangular sleeve; 302. Clamping plate; 303. Rubber strip; 4. Limiting assembly; 401. Round rod; 402. Spring; 403. Sleeve plate; 404. Insert rod; 405. Pull rod; 5. Constant flow gas sampler body. Detailed Implementation

[0019] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0020] like Figures 1-4 As shown, this utility model provides a technical solution: a portable constant flow gas sampler, including a movable base 1, a plurality of movable wheels 103 fixedly connected to the bottom end of the movable base 1, a handle 104 fixedly connected to the side end of the movable base 1, a straight groove 101 opened at the top end of the movable base 1, a rotating component 2 provided inside the straight groove 101, a clamping component 3 provided at the outer end of the rotating component 2, a constant flow gas sampler body 5 provided inside the clamping component 3, the constant flow gas sampler body 5 being model ZD-1013, a rectangular groove 102 opened at the side end of the movable base 1, and a tool for... The limiting component 4 of the fixed rotating component 2 drives the clamping component 3 to clamp and fix the constant flow gas sampler body 5 by rotating the rotating component 2. The limiting component 4 fixes the rotating component 2 to prevent the rotating component 2 from rotating and causing the clamping component 3 to move, thereby preventing the clamping force of the clamping component 3 on the constant flow gas sampler body 5 from loosening. Then, by pulling the handle 104 and using the moving wheel 103, the constant flow gas sampler body 5 can be easily carried, transported and moved. Compared with carrying the constant flow gas sampler body 5 by hand, it is more labor-saving and less likely to cause arm pain for the personnel.

[0021] As one implementation method in this embodiment, such as Figure 1 , Figure 2 and Figure 4 As shown, the rotating assembly 2 includes a bidirectional threaded rod 201, which is rotatably disposed between the inner end of the straight groove 101 and the outer end of the movable seat 1. A knob 202 is fixedly connected to the side end of the bidirectional threaded rod 201, and several insertion holes 203 are provided on the side end of the knob 202. The clamping assembly 3 includes two rectangular sleeves 301, both of which are threadedly connected to the outer end of the bidirectional threaded rod 201. A clamping plate 302 is fixedly connected to the top end of each of the two rectangular sleeves 301. A holding groove is provided on the side end of each clamping plate 302, and several rubber strips 303 are fixedly connected to the inner wall of each holding groove. The constant flow gas sampler body 5 is located between the two holding grooves. In practice, the constant flow gas sampler body 5 is used to sample the gas. The sampler body 5 is placed in the holding slots on the sides of the two clamping plates 302. By rotating the knob 202, the bidirectional threaded rod 201 can be rotated. At this time, since the shape of the rectangular sleeve 301 matches the shape of the straight groove 101, the rectangular sleeve 301 can be translated along the straight groove 101 to the outer end of the bidirectional threaded rod 201. At this time, the two clamping plates 302 move closer to each other, thereby achieving clamping and fixing of the constant flow gas sampler body 5. With the use of the rubber strip 303, the clamping plates 302 can have a certain anti-slip effect when clamping the constant flow gas sampler body 5, improving the fixing effect of the clamping plates 302 on the constant flow gas sampler body 5. At the same time, the rubber strip 303 is soft and will not cause bumps or damage to the constant flow gas sampler body 5.

[0022] As one implementation method in this embodiment, such as Figure 2 and Figure 3As shown, the limiting component 4 includes a round rod 401, which is fixedly connected between the inner sides of the rectangular groove 102. A spring 402 is sleeved on the outer end of the round rod 401, and a sleeve plate 403 is sleeved on the outer end of the round rod 401. One end of the spring 402 is fixedly connected to the inner side of the rectangular groove 102, and the other end of the spring 402 is fixedly connected to the side end of the sleeve plate 403. An insertion rod 404 is fixedly connected to the side end of the sleeve plate 403, and the insertion rod 404 is adapted to each insertion hole 203. A pull rod 405 is fixedly connected to the side end of the sleeve plate 403. In practice, by pulling the pull rod 405, the sleeve plate 403 and the insertion rod 404 are moved. The sleeve plate 403 can retract by pressing against the spring 402, and the insertion rod 404 moves away from the knob 20. The knob 202 is rotated to drive the bidirectional threaded rod 201 to rotate. After the bidirectional threaded rod 201 drives the clamping plate 302 to clamp and fix the constant flow gas sampler body 5, the knob 202 is adjusted so that one of the insertion holes 203 is aligned with the position of the insertion rod 404. After the pull rod 405 is released, the spring 402 pushes against the sleeve plate 403 to drive the insertion rod 404 to rebound. At this time, the insertion rod 404 can be inserted into the insertion hole 203 on the side of the knob 202, thereby fixing the knob 202 and fixing the position of the two clamping plates 302. This prevents the clamping plates 302 from moving due to the rotation of the knob 202, thus preventing the clamping force of the clamping plates 302 on the constant flow gas sampler body 5 from becoming loose.

[0023] Working principle: By placing the constant flow gas sampler body 5 in the receiving slots on the sides of the two clamping plates 302, pulling the pull rod 405 moves the sleeve 403 and the insertion rod 404. The sleeve 403 retracts against the spring 402, and the insertion rod 404 leaves the insertion hole 203 on the side of the knob 202. At this time, rotating the knob 202 drives the bidirectional threaded rod 201 to rotate. Since the shape of the rectangular sleeve 301 matches the shape of the straight groove 101, the rectangular sleeve 301 can translate along the straight groove 101 to the outer end of the bidirectional threaded rod 201. At this time, the two clamping plates 302 move closer to each other, thereby clamping and fixing the constant flow gas sampler body 5. With the use of the rubber strip 303, the clamping plates 302 can provide a certain anti-slip effect when clamping the constant flow gas sampler body 5, improving the clamping effect of the clamping plates 302 on the constant flow gas sampler. The main body 5 is securely fixed, and the rubber strip 303 is soft and will not cause any damage to the constant flow gas sampler body 5. By adjusting the knob 202, one of the insertion holes 203 is aligned with the insertion rod 404. After releasing the pull rod 405, the spring 402 pushes against the sleeve plate 403, causing the insertion rod 404 to rebound. At this time, the insertion rod 404 can be inserted into the insertion hole 203 on the side of the knob 202, thereby fixing the knob 202 and fixing the position of the two clamping plates 302. This prevents the clamping plates 302 from moving due to the rotation of the knob 202, which would loosen the clamping force on the constant flow gas sampler body 5. By pulling the handle 104 and using the moving wheels 103, it is easy to carry and move the constant flow gas sampler body 5. Compared with carrying it by hand, it is less strenuous and less likely to cause arm pain.

[0024] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A portable constant flow gas sampler, comprising a movable base (1), characterized in that: The bottom end of the movable seat (1) is fixedly connected with several movable wheels (103), the side end of the movable seat (1) is fixedly connected with a handle (104), the top end of the movable seat (1) is provided with a straight groove (101), the inside of the straight groove (101) is provided with a rotating component (2), the outer end of the rotating component (2) is provided with a clamping component (3), the inside of the clamping component (3) is provided with a constant flow gas sampler body (5), the side end of the movable seat (1) is provided with a rectangular groove (102), the inside of the rectangular groove (102) is provided with a limiting component (4) for fixing the rotating component (2).

2. The portable constant flow gas sampler according to claim 1, characterized in that: The rotating assembly (2) includes a bidirectional threaded rod (201), which is rotatably disposed between the inner side of the straight groove (101) and the outer side of the movable seat (1). A knob (202) is fixedly connected to the side end of the bidirectional threaded rod (201), and a plurality of insertion holes (203) are provided on the side end of the knob (202).

3. A portable constant flow gas sampler according to claim 2, characterized in that: The clamping assembly (3) includes two rectangular sleeves (301), both of which are threaded to the outer end of the bidirectional threaded rod (201), and the top ends of both rectangular sleeves (301) are fixedly connected to clamping plates (302).

4. A portable constant flow gas sampler according to claim 3, characterized in that: Each of the clamps (302) has a holding groove on its side end, and a number of rubber strips (303) are fixedly connected to the inner wall of each holding groove.

5. A portable constant flow gas sampler according to claim 4, characterized in that: The constant flow gas sampler body (5) is located between two holding tanks.

6. A portable constant flow gas sampler according to claim 2, characterized in that: The limiting component (4) includes a round rod (401), which is fixedly connected between the inner sides of the rectangular groove (102). A spring (402) is sleeved on the outer end of the round rod (401), and a sleeve plate (403) is sleeved on the outer end of the round rod (401). One end of the spring (402) is fixedly connected to the inner side of the rectangular groove (102), and the other end of the spring (402) is fixedly connected to the side end of the sleeve plate (403). A plug rod (404) is fixedly connected to the side end of the sleeve plate (403).

7. A portable constant flow gas sampler according to claim 6, characterized in that: The insertion rod (404) is adapted to each insertion hole (203), and a pull rod (405) is fixedly connected to the side end of the sleeve (403).

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