Artificial sampling device for coal gas

Abstract

The utility model discloses a kind of coal gas manual sampling device, including sampling cabin, the left side of sampling cabin is provided with air inlet mechanism, the air inlet mechanism includes air inlet pipe and movable sleeve, the outer surface of air inlet pipe is slidably connected in movable sleeve, the left end inner surface of air inlet pipe is provided with thread groove one, the right side outer surface of sampling cabin is fixedly connected with movable cabin, the inside of movable cabin is provided with fixed rod, the left end of fixed rod is fixedly connected with piston plate, the inner surface of sampling cabin is slidably in piston plate, the lower side outer surface of sampling cabin is provided with sampling mechanism. Through the above structure, the connecting part can be reinforced and sealed, to prevent gas leakage, reduce manual intervention through piston structure, ensure the stability of sampling, improve efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of gas sampling equipment, and in particular to a manual gas sampling device. Background Technology

[0002] In order to ensure the quality and safety of coal gas and to test its performance parameters and other indicators during the production, transportation and use of coal gas, it is necessary to sample the coal gas in the pipeline.

[0003] In addition, the connection between existing sampling devices and gas pipelines is not convenient or secure enough, and the collection and storage of samples after sampling is also quite troublesome. Some devices rely on manual air pumps or external gas sources for driving, which is cumbersome, inefficient, and makes it difficult to achieve rapid and continuous sampling. Therefore, a gas manual sampling device with a reasonable structure, convenient operation, high sampling efficiency, and safety and reliability is needed to solve the above problems. Utility Model Content

[0004] The purpose of this invention is to provide a gas manual sampling device that can reinforce and seal the connection parts to prevent gas leakage, reduce manual intervention through the piston structure, ensure sampling stability, and improve efficiency.

[0005] To achieve the above objectives, a gas manual sampling device is provided, including a sampling chamber. An air intake mechanism is provided on the left side of the sampling chamber. The air intake mechanism includes an air intake pipe and a movable sleeve. The movable sleeve is slidably connected to the outer surface of the air intake pipe. A threaded groove is provided on the inner surface of the left end of the air intake pipe. A movable chamber is fixedly connected to the right outer surface of the sampling chamber. A fixed rod is installed inside the movable chamber. A piston plate is fixedly connected to the left end of the fixed rod. The piston plate slides on the inner surface of the sampling chamber. A sampling mechanism is installed on the lower outer surface of the sampling chamber.

[0006] According to the aforementioned gas manual sampling device, the gas inlet mechanism further includes an air inlet located on the outer surface of the left side of the sampling chamber. The air inlet facilitates the flow of sampling gas. The air inlet is connected to the air inlet pipe. A one-way valve is provided on the outer surface of the air inlet pipe to prevent gas backflow and leakage. Limiting grooves are formed on the upper and lower outer surfaces of the air inlet pipe. A sealing ring is provided on the inner surface of the movable sleeve. The design of the sealing ring can prevent gas leakage and enhance the sealing effect. Protrusions are provided on the upper and lower inner surfaces of the movable sleeve. The protrusions slide in the limiting grooves. The protrusions and limiting grooves can limit the sliding sleeve and prevent loosening.

[0007] According to the aforementioned gas manual sampling device, the right side of the fixed rod extends through the inner surface of the sampling chamber and the movable chamber, and a movable plate is fixedly connected to the right end of the fixed rod, the movable plate being slidably connected to the inner surface of the movable chamber.

[0008] According to the aforementioned gas manual sampling device, a motor is provided on the upper outer surface of the movable chamber, and a worm gear passing through the movable chamber is fixedly connected to the output end of the motor. A worm wheel meshes with the front outer surface of the worm gear, and transmission is achieved through the design of the worm wheel and the worm gear.

[0009] According to the aforementioned gas manual sampling device, a threaded rod is fixedly connected to the outer surface of the worm gear, and a movable plate is threadedly connected to the outer surface of the threaded rod. The movable plate is fixedly connected to the piston plate through the fixed rod. The movement of the piston plate can change the gas pressure inside the sampling chamber, thereby guiding the gas flow.

[0010] According to the aforementioned gas manual sampling device, the sampling mechanism includes a gas outlet hole opened on the lower inner surface of the sampling chamber, and a gas outlet pipe is fixedly connected to the outer surface of the gas outlet hole. The gas outlet hole can realize the flow of gas and ensure that the gas enters the gas outlet pipe.

[0011] According to the aforementioned gas manual sampling device, a one-way valve II is provided on the outer surface of the gas outlet pipe. The design of the one-way valve II can prevent gas backflow at the bottle opening. A threaded groove II is provided on the lower inner surface of the gas outlet pipe. A sampling bottle is threadedly connected to the lower side of the gas outlet pipe. A threaded body is provided on the outer surface of the bottle opening of the sampling bottle. The threaded body and the threaded groove II correspond to each other. The design of the threaded groove and the threaded body can ensure a stable and airtight connection.

[0012] This utility model has the following beneficial effects: 1. Compared with the existing technology, the design of the air intake mechanism allows for easy threaded connection with the gas pipeline through the threaded groove on the left end of the air intake pipe. The movable sleeve can slide on the air intake pipe, and the sliding of the protrusion in the limiting groove can reinforce and seal the connection. The sealing ring further enhances the sealing performance and prevents gas leakage. The one-way valve can control the gas to enter the sampling chamber only through the air intake pipe, avoiding backflow.

[0013] 2. Compared with existing technologies, the worm gear is driven by a motor to rotate, and the worm gear meshes with the worm wheel, thereby driving the threaded rod to rotate. The rotation of the threaded rod causes the movable plate to slide in the movable chamber. The movable plate drives the piston plate to slide in the sampling chamber through the fixed rod, thereby changing the space in the sampling chamber and adjusting the gas pressure in the sampling chamber, which facilitates the entry of gas into the sampling chamber and is more stable and efficient. Attached Figure Description

[0014] The present invention will be further described below with reference to the accompanying drawings and embodiments; Figure 1 This is a schematic diagram of the overall structure of a gas manual sampling device according to the present invention; Figure 2 This is a cross-sectional view of the air inlet device of a gas manual sampling device according to the present invention; Figure 3 This is a front sectional view of the sampling chamber and the moving chamber of a gas manual sampling device according to the present invention; Figure 4 This is a schematic diagram of the sampling device of a gas manual sampling device according to the present invention.

[0015] Legend: 1. Sampling chamber; 2. Movable chamber; 3. Air intake mechanism; 4. Sampling mechanism; 5. One-way valve I; 6. Threaded groove I; 7. Air intake pipe; 8. Limiting groove; 9. Protrusion; 10. Movable sleeve; 11. Motor; 12. Fixed rod; 13. Piston plate; 14. Air outlet; 15. Worm gear; 16. Worm; 17. Movable plate; 18. Threaded rod; 19. One-way valve II; 20. Air outlet pipe; 21. Threaded groove II; 22. Threaded body; 23. Sampling bottle. Detailed Implementation

[0016] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0017] Reference Figure 1-4 This utility model discloses a gas manual sampling device, which includes a sampling chamber 1. An air intake mechanism 3 is provided on the left side of the sampling chamber 1. The air intake mechanism 3 includes an air intake pipe 7 and a movable sleeve 10. The movable sleeve 10 is slidably connected to the outer surface of the air intake pipe 7. A threaded groove 6 is provided on the inner surface of the left end of the air intake pipe 7. The threaded groove 6 matches the thread on the outer surface of the gas sampling pipe. The air intake mechanism 3 also includes an air inlet provided on the outer surface of the left side of the sampling chamber 1. The air inlet facilitates the flow of sampling gas. The air inlet is connected to the air intake pipe 7. A one-way valve 5 is provided on the outer surface of the air intake pipe 7. The one-way valve 5 is used to prevent gas backflow and leakage. Limiting grooves 8 are provided on the upper and lower outer surfaces of the air intake pipe 7. A sealing ring is provided on the inner surface of the movable sleeve 10. The design of the sealing ring can prevent gas leakage and strengthen the sealing effect. Protrusions 9 are provided on the upper and lower inner surfaces of the movable sleeve 10. The protrusions 9 slide in the limiting grooves 8.

[0018] A movable chamber 2 is fixedly connected to the right outer surface of the sampling chamber 1. A motor 11 is installed on the upper outer surface of the movable chamber 2. A worm gear 16, which passes through the movable chamber 2, is fixedly connected to the output end of the motor 11. A worm wheel 15 meshes with the front outer surface of the worm gear 16. A threaded rod 18 is fixedly connected to the outer surface of the worm wheel 15. The design of the worm wheel 15 and the worm gear 16 drives the threaded rod 18 to rotate. A movable plate 17 is threadedly connected to the outer surface of the threaded rod 18. The movable plate 17 is fixedly connected to the piston plate 13 through a fixed rod 12. A fixed rod 12 is installed inside the movable chamber 2. The right side of the fixed rod 12 passes through the inner surfaces of the sampling chamber 1 and the movable chamber 2. The movable plate 17 is slidably connected to the inner surface of the movable chamber 2. A piston plate 13 is fixedly connected to the left end of the fixed rod 12. The piston plate 13 slides on the inner surface of the sampling chamber 1. When the piston plate 13 moves to the right, one-way valve 5 opens and one-way valve 19 closes. When the piston plate 13 moves to the left, the one-way valve 5 closes and the one-way valve 19 opens, allowing the gas to enter the sampling mechanism 4. The sampling mechanism 4 is provided on the lower outer surface of the sampling chamber 1. The sampling mechanism 4 includes an outlet hole 14 on the lower inner surface of the sampling chamber 1. The outlet hole 14 allows gas to flow and ensures that the gas enters the outlet pipe. An outlet pipe 20 is fixedly connected to the outer surface of the outlet hole 14. A one-way valve 19 is provided on the outer surface of the outlet pipe 20. The design of the one-way valve 19 can prevent the gas from flowing back into the bottle. A threaded groove 21 is provided on the lower inner surface of the outlet pipe 20. A sampling bottle 23 is threadedly connected to the lower side of the outlet pipe 20. A threaded body 22 is provided on the outer surface of the bottle mouth of the sampling bottle 23. The threaded body 22 and the threaded groove 21 correspond to each other. The design of the threaded groove 21 and the threaded body 22 can ensure a stable and airtight connection.

[0019] Working principle: When using this gas sampling device, firstly, connect the sampling bottle 23 to the threaded groove 21 via the threaded body 22. Move the movable sleeve 10 to the right, then connect the threaded groove 6 to the sampling pipe. After connection, move the movable sleeve 10 to the left to seal and fix the inlet pipe 7 and the sampling pipe. After fixing, open the one-way valve 5 and close the one-way valve 19. Turn on the motor 12 to rotate forward. The motor 12 drives the worm gear 16 to rotate, and the rotation of the worm gear 16 drives the meshing worm wheel 15 to rotate. The worm gear 15 rotates, driving the threaded rod 18 to rotate. The rotation of the threaded rod 18 drives the movable plate 17 to move to the right. The movable plate 17 drives the fixed rod 12 to move to the right. The fixed rod 12 drives the piston plate 13 to move to the right, changing the internal air pressure of the sampling chamber 1, thereby allowing the coal gas to enter the sampling chamber 1. Then, the one-way valve 29 is opened, the one-way valve 5 is closed, and the reverse motor 11 is reversed, causing the piston plate 13 to move to the left, compressing the coal gas and allowing the coal gas to enter the sampling bottle through the gas outlet 14 and the gas outlet pipe 20. After the operation is completed, the sampling bottle 23 is removed.

[0020] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A gas manual sampling device, characterized in that, Includes a sampling chamber (1), and an air intake mechanism (3) is provided on the left side of the sampling chamber (1). The air intake mechanism (3) includes an air intake pipe (7) and a movable sleeve (10). The movable sleeve (10) is slidably connected to the outer surface of the air intake pipe (7). A threaded groove (6) is provided on the inner surface of the left end of the air intake pipe (7). A movable chamber (2) is fixedly connected to the right outer surface of the sampling chamber (1). A fixed rod (12) is provided inside the movable chamber (2). A piston plate (13) is fixedly connected to the left end of the fixed rod (12). The piston plate (13) slides on the inner surface of the sampling chamber (1). A sampling mechanism (4) is provided on the lower outer surface of the sampling chamber (1).

2. The gas manual sampling device according to claim 1, characterized in that, The air intake mechanism (3) also includes an air inlet on the outer surface of the left side of the sampling chamber (1). The air inlet is connected to the air intake pipe (7). A one-way valve (5) is provided on the outer surface of the air intake pipe (7). Limiting grooves (8) are opened on the upper and lower outer surfaces of the air intake pipe (7). A sealing ring is provided on the inner surface of the movable sleeve (10). A protrusion (9) is provided on the upper and lower inner surfaces of the movable sleeve (10). The protrusion (9) slides in the limiting groove (8).

3. The gas manual sampling device according to claim 1, characterized in that, The right side of the fixed rod (12) extends through the inner surface of the sampling chamber (1) and the movable chamber (2). The right end of the fixed rod (12) is fixedly connected to a movable plate (17), which is slidably connected to the inner surface of the movable chamber (2).

4. The gas manual sampling device according to claim 1, characterized in that, A motor (11) is provided on the upper outer surface of the active cabin (2). The output end of the motor (11) is fixedly connected to a worm (16) that passes through the active cabin (2). A worm wheel (15) is engaged on the front outer surface of the worm (16).

5. A gas manual sampling device according to claim 4, characterized in that, A threaded rod (18) is fixedly connected to the outer surface of the worm gear (15), and a movable plate (17) is threadedly connected to the outer surface of the threaded rod (18). The movable plate (17) is fixedly connected to the piston plate (13) through the fixed rod (12).

6. The gas manual sampling device according to claim 1, characterized in that, The sampling mechanism (4) includes an air outlet (14) on the lower inner surface of the sampling chamber (1), and an air outlet pipe (20) is fixedly connected to the outer surface of the air outlet (14).

7. A gas manual sampling device according to claim 6, characterized in that, The outer surface of the vent pipe (20) is provided with a one-way valve (19), the lower inner surface of the vent pipe (20) is provided with a threaded groove (21), the lower side of the vent pipe (20) is threadedly connected to a sampling bottle (23), the outer surface of the bottle mouth of the sampling bottle (23) is provided with a threaded body (22), and the threaded body (22) and the threaded groove (21) correspond to each other.

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