Waste gas detection sample storage device with good sealing performance

Abstract

The utility model relates to the technical field of waste gas detection, in particular to a good-sealing sample storage device for waste gas detection, which comprises a storage tank, two ends of the storage tank are respectively and fixedly connected with a gas inlet pipe and a gas outlet pipe, the gas inlet pipe and the gas outlet pipe are communicated with the storage tank, and a sealing device is arranged on the inner wall of the storage tank. The sealing device comprises a first valve and a second valve which are fixed to one end of the gas inlet pipe and one end of the gas outlet pipe respectively, a fixing plate is fixedly connected to the inner wall of the gas inlet pipe, a sliding rod is slidably connected to the inner wall of the fixing plate, and two fixing rings are fixedly connected to the inner wall of the storage tank. When no drawing force exists, under the action of the reset spring, the sealing plate is tightly attached to the surface of the fixing ring, the round hole is shielded, preliminary sealing is achieved, then the first valve and the second valve are closed, bidirectional sealing is formed, the waste gas leakage risk is greatly reduced, the sample storage safety is guaranteed, and the detection result accuracy is improved.

Description

Technical Field

[0001] This utility model relates to the field of exhaust gas detection technology, and in particular to a sample storage device for exhaust gas detection with good sealing performance. Background Technology

[0002] Waste gas testing is a key link in environmental monitoring and industrial production quality control. Its purpose is to accurately analyze parameters such as the composition, concentration and emission rate of various waste gases, determine whether the waste gas is discharged in compliance with regulations, and assess the potential impact on the environment and human health. In the process of waste gas testing, it is often necessary to sample and store the waste gas to facilitate subsequent testing operations.

[0003] In daily work, it has been found that existing waste gas testing sample storage devices commonly use a method of drawing waste gas into the tank and then relying on the valves at both ends of the tank to achieve a seal. This sealing method is extremely simplistic, relying solely on the closure of the valves to prevent waste gas leakage. Once the valves are displaced by external force, even the slightest gap can allow waste gas to escape. This leakage not only directly leads to sample loss and interferes with the accuracy of subsequent test results, but also causes environmental pollution. Utility Model Content

[0004] The purpose of this invention is to solve the problem of poor sealing effect and the single overall sealing method in the existing technology, and to propose a sample storage device for exhaust gas detection with good sealing performance.

[0005] To achieve the above objectives, this utility model adopts the following technical solution: a sample storage device for waste gas detection with good sealing performance, comprising a storage tank, an inlet pipe and an outlet pipe fixedly connected to both ends of the storage tank respectively, the inlet pipe and the outlet pipe communicating with the storage tank, a sealing device provided on the inner wall of the storage tank, the sealing device including a valve one and a valve two fixedly fixed to one end of the inlet pipe and the outlet pipe respectively, a fixing plate fixedly connected to the inner wall of the inlet pipe, a sliding rod slidably connected to the inner wall of the fixing plate, and two fixing rings fixedly connected to the inner wall of the storage tank, the surfaces of the fixing rings being open. A circular hole is provided for the sliding rod to pass through. Two sealing plates are fixedly connected to the surface of the sliding rod. A return spring is provided between the sliding rod and the fixed plate. Through the above components, an external air extraction device can be connected to the second valve. During air extraction, the suction force will drive the sealing plate and the sliding rod to move, and the return spring will be stressed. At this time, the sealing plate will no longer block the circular hole on the surface of the fixed ring, and the exhaust gas can enter the storage tank. After collection, when there is no suction force, the return spring can drive the sliding rod and the sealing plate to return to their original positions. The sealing plate will fit against the fixed ring to form a seal. At the same time, in conjunction with the first valve and the second valve, a double seal can be achieved to improve the sealing effect.

[0006] Preferably, a sealing gasket is fixedly connected to the surface of the sealing plate. The sealing gasket is made of rubber. Through the above components, the sealing plate and the sealing gasket are pressed against the fixing ring, which can improve the overall sealing effect.

[0007] Preferably, the return spring is sleeved on the slide rod, and the two ends of the return spring are fixedly connected to the surfaces of the slide rod and the fixed plate, respectively.

[0008] Preferably, a support rod is fixedly connected to the inner wall of the storage tank, and the slide rod is slidably connected to the inner wall of the support rod. Through the above-mentioned components, the support rod, together with the fixing plate, can further improve the stability of the slide rod when it moves.

[0009] Preferably, a handle is fixedly connected to the surface of the storage tank.

[0010] Preferably, a filter assembly is provided at one end of the valve, the filter assembly includes a mounting base, a slot is formed on the surface of one end of the valve, the mounting base is inserted into the inner wall of the slot, a filter cover is fixedly connected to the surface of the mounting base, a rod is slidably connected to the inner wall of the mounting base, and an insertion hole is formed on the surface of the valve, the rod is inserted into the inner wall of the insertion hole. Through the above components, the mounting base can be initially inserted into the slot, and then the rod can be inserted into the insertion hole, thus installing the mounting base and the filter cover. During the sample collection process, it can filter particulate impurities and reduce the problem of impurities entering and interfering with normal use.

[0011] Preferably, a positioning spring is sleeved on the surface of the insertion rod, and the two ends of the positioning spring are fixedly connected to the surfaces of the insertion rod and the mounting base, respectively. Through the above-mentioned components, the positioning spring can improve the stability of the insertion rod.

[0012] Compared with the prior art, the advantages and positive effects of this utility model are as follows:

[0013] In this invention, by setting a sealing device, after the exhaust gas is extracted into the storage tank and there is no more suction force, the sealing plate is tightly attached to the surface of the fixing ring under the action of the return spring, blocking the round hole and achieving a preliminary seal. Then, valve one and valve two are closed to form a bidirectional seal, which greatly reduces the risk of exhaust gas leakage, ensures the safety of sample storage, and improves the accuracy of test results.

[0014] In this invention, by setting up a filter assembly, the filter cover can be conveniently installed and stably fixed through the combination of a mounting base, filter cover, insertion rod, positioning spring, insertion hole and slot. During the waste gas collection process, the filter cover can effectively intercept particulate impurities carried by the waste gas, reduce the entry of impurities into the storage tank and interfere with subsequent detection and analysis, optimize sample quality, and provide a strong guarantee for accurate detection. Attached Figure Description

[0015] Figure 1 This utility model provides a three-dimensional structural diagram of a sample storage device for exhaust gas detection with good sealing performance;

[0016] Figure 2 This utility model provides a cross-sectional schematic diagram of a sample storage device for exhaust gas detection with good sealing performance;

[0017] Figure 3 This utility model provides a schematic diagram of the sealing device portion of a sample storage device for exhaust gas detection with good sealing performance;

[0018] Figure 4 This utility model provides a partial structural diagram of the sealing device of a sample storage device for exhaust gas detection with good sealing performance.

[0019] Figure 5 This invention presents an exploded structural diagram of the filter assembly of a sample storage device for exhaust gas detection with good sealing performance.

[0020] Legend:

[0021] 1. Storage tank; 2. Inlet pipe; 3. Outlet pipe; 4. Sealing device; 41. Valve 1; 42. Valve 2; 43. Sealing gasket; 44. Filter assembly; 441. Filter cover; 442. Mounting base; 443. Insert rod; 444. Positioning spring; 445. Slot; 446. Insertion hole; 45. Fixing plate; 46. Slide rod; 47. Return spring; 48. Support rod; 49. Fixing ring; 410. Round hole; 411. Sealing plate; 5. Handle. Detailed Implementation

[0022] Please see Figures 1-5 This utility model provides a technical solution: a sample storage device for waste gas detection with good sealing performance, including a storage tank 1, with an inlet pipe 2 and an outlet pipe 3 fixedly connected to both ends of the storage tank 1, the inlet pipe 2 and the outlet pipe 3 being connected to the storage tank 1, and a sealing device 4 being provided on the inner wall of the storage tank 1.

[0023] Specifically, the sealing device 4 includes a valve 41 and a valve 42 fixed to one end of the air inlet pipe 2 and the air outlet pipe 3, respectively. A fixing plate 45 is fixedly connected to the inner wall of the air inlet pipe 2. A sliding rod 46 is slidably connected to the inner wall of the fixing plate 45. Two fixing rings 49 are fixedly connected to the inner wall of the storage tank 1. A round hole 410 is opened on the surface of the fixing ring 49 for the sliding rod 46 to pass through. Two sealing plates 411 are fixedly connected to the surface of the sliding rod 46. A return spring 47 is provided between the sliding rod 46 and the fixing plate 45.

[0024] In this embodiment: Valves 2 42 can be connected to an external air extraction device. During air extraction, the suction force will drive the sealing plate 411 and the slide rod 46 to move, and the return spring 47 will be stressed. At this time, the sealing plate 411 loses its obstruction of the circular hole 410 on the surface of the fixing ring 49, and the exhaust gas can enter the storage tank 1. After collection, when there is no suction force, the return spring 47 can drive the slide rod 46 and the sealing plate 411 to return to their original positions. The sealing plate 411 fits against the fixing ring 49 to form a seal. At the same time, the valves 1 41 and 2 42 can achieve double sealing and improve the sealing effect.

[0025] Specifically, a sealing gasket 43 is fixedly connected to the surface of the sealing plate 411, and the sealing gasket 43 is made of rubber.

[0026] In this embodiment, the sealing plate 411, together with the sealing gasket 43, is pressed against the fixing ring 49, which can improve the overall sealing effect.

[0027] Specifically, the return spring 47 is sleeved on the slide rod 46, and the two ends of the return spring 47 are fixedly connected to the surfaces of the slide rod 46 and the fixing plate 45, respectively.

[0028] Specifically, a support rod 48 is fixedly connected to the inner wall of the storage tank 1, and a sliding rod 46 is slidably connected to the inner wall of the support rod 48. The support rod 48, together with the fixing plate 45, can further improve the stability of the sliding rod 46 when it moves.

[0029] Specifically, a handle 5 is fixedly connected to the surface of storage tank 1.

[0030] Specifically, a filter assembly 44 is provided at one end of the valve 41. The filter assembly 44 includes a mounting base 442. A slot 445 is provided on the surface of one end of the valve 41. The mounting base 442 is inserted into the inner wall of the slot 445. A filter cover 441 is fixedly connected to the surface of the mounting base 442. An insertion rod 443 is slidably connected to the inner wall of the mounting base 442. An insertion hole 446 is provided on the surface of the valve 41. The insertion rod 443 is inserted into the inner wall of the insertion hole 446.

[0031] In this embodiment: the mounting base 442 can be initially inserted into the slot 445, and then the insertion rod 443 can be inserted into the insertion hole 446 to install the mounting base 442 and the filter cover 441. During the sample collection process, it can filter particulate impurities and reduce the problem of impurities entering and interfering with normal use.

[0032] Specifically, a positioning spring 444 is fitted on the surface of the insertion rod 443. The two ends of the positioning spring 444 are fixedly connected to the surfaces of the insertion rod 443 and the mounting base 442, respectively. The positioning spring 444 can improve the stability of the insertion rod 443.

[0033] Working principle: When storing waste gas, firstly, valve 41 and valve 42 can be opened. Then, the extraction equipment is connected to valve 42, and the gas is extracted. During extraction, the suction force will drive the sealing plate 411 and the sliding rod 46 to move, and the return spring 47 will be stressed. When the sealing plate 411 and the sealing gasket 43 no longer block the circular hole 410 on the surface of the fixing ring 49, the waste gas can first pass through the filter cover 441. The filter cover 441 can intercept particulate impurities carried by the waste gas. The gas then enters the storage tank 1 through the inlet pipe 2 for storage. When the suction ends, the suction force disappears, and the return spring 47 can immediately drive the slide rod 46 to return to its original position. At the same time, the sealing plate 411, together with the sealing gasket 43, presses against the fixing ring 49 to block the round hole 410, achieving a preliminary seal. After removing the suction equipment, valve 1 41 and valve 2 42 can be closed to achieve a bidirectional seal, improve the sealing effect, and realize storage. When detecting exhaust gas, the suction equipment can be connected to valve 2 42 to extract the exhaust gas for testing.

Claims

1. A sample storage device for exhaust gas detection with good sealing, comprising a storage tank (1), characterized in that: The both ends of the storage tank (1) are fixedly connected with the air inlet pipe (2) and the air outlet pipe (3), the air inlet pipe (2) and the air outlet pipe (3) are communicated with the storage tank (1), the inner wall of the storage tank (1) is provided with a sealing device (4), the sealing device (4) comprises valve one (41) and valve two (42) fixedly arranged at one end of the air inlet pipe (2) and the air outlet pipe (3) respectively, the inner wall of the air inlet pipe (2) is fixedly connected with a fixed plate (45), the inner wall of the fixed plate (45) is slidably connected with a sliding rod (46), the inner wall of the storage tank (1) is fixedly connected with two fixed rings (49), the surface of the fixed ring (49) is provided with a circular hole (410), the circular hole (410) is used for the sliding rod (46) to pass through, the surface of the sliding rod (46) is fixedly connected with two sealing plates (411), the sliding rod (46) and the fixed plate (45) are provided with a reset spring (47).

2. The sample storage device for exhaust gas detection with good sealing according to claim 1, characterized in that: The surface of the sealing plate (411) is fixedly connected with a sealing gasket (43), and the sealing gasket (43) is made of rubber.

3. The sample storage device for exhaust gas detection with good sealing according to claim 1, characterized in that: The reset spring (47) is sleeved on the sliding rod (46), and the both ends of the reset spring (47) are fixedly connected with the surfaces of the sliding rod (46) and the fixed plate (45).

4. The sample storage device for exhaust gas detection with good sealing according to claim 1, characterized in that: The inner wall of the storage tank (1) is fixedly connected with a supporting rod (48), and the sliding rod (46) and the supporting rod (48) are slidably connected.

5. The sample storage device for exhaust gas detection with good sealing according to claim 1, characterized in that: The surface of the storage tank (1) is fixedly connected with a handle (5).

6. The sample storage device for exhaust gas detection with good sealing according to claim 1, characterized in that: One end of the valve one (41) is provided with a filter assembly (44), the filter assembly (44) comprises a mounting seat (442), the surface of one end of the valve one (41) is provided with a slot (445), the mounting seat (442) and the inner wall of the slot (445) are inserted, the surface of the mounting seat (442) is fixedly connected with a filter cover (441), the inner wall of the mounting seat (442) is slidably connected with a plug rod (443), the surface of the valve one (41) is provided with a plug hole (446), and the plug rod (443) and the inner wall of the plug hole (446) are inserted.

7. The sample storage device for exhaust gas detection with good sealing according to claim 6, characterized in that: The surface of the plug rod (443) is sleeved with a positioning spring (444), and the both ends of the positioning spring (444) are fixedly connected with the surfaces of the plug rod (443) and the mounting seat (442).

Images