Chemical safety gas sampling device

Abstract

The utility model relates to the technical field of gas sampling, and discloses a chemical safety gas sampling device which comprises a supporting frame, a conveying device is fixedly installed in the middle of the supporting frame, fixing frames are evenly and fixedly installed on the conveying device at equal intervals, and collecting tanks are movably installed in the fixing frames. An air inlet pipe is fixedly mounted at the top of the collecting tank. The driving motor drives the reciprocating screw rod to rotate to control the movable block to move upwards, at the moment, the exhaust pipe is taken down from the air inlet pipe, the servo motor is started at the same time, the servo motor drives the conveying device to rotate to move a new collection tank to the position below the exhaust pipe, and the movable block moves downwards after reaching the top through continuous rotation of the reciprocating screw rod; when the air inlet pipe completely enters the exhaust pipe, the top of the air inlet pipe jacks up the control block to enable the sealing block to move upwards to open the bottom of the connecting block, so that the effects of ensuring the safety of surrounding workers and automatically replacing the collecting tank when the collecting tank is replaced, and being very convenient are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of gas sampling, in particular to a chemical safety gas sampling device. Background Technique

[0002] Chemical waste gas refers to the toxic and harmful gases discharged from chemical plants during chemical production. Chemical waste gas often contains many types of pollutants, with complex physical and chemical properties and different toxicities, seriously polluting the environment and affecting human health. The components of chemical waste gas generated in different chemical production industries vary greatly. For example, the waste gas generated in the chlor-alkali industry mainly contains chlorine, hydrogen chloride, vinyl chloride, mercury, acetylene, etc., and the waste gas generated in the nitrogen fertilizer industry mainly contains nitrogen oxides, urea dust, carbon monoxide, ammonia, sulfur dioxide, methane, etc.

[0003] An existing chemical safety and environmental protection gas sampling device (Publication No.: CN217542553U) has at least the following drawbacks: When workers collect chemical gas into a tank, when the collection tank is full, workers need to pause the air extraction equipment and manually replace the full gas collection tank, which is very troublesome, and there will be a small amount of chemical gas leakage around when replacing the collection tank, which will cause harm to the surrounding workers. Content of the Utility Model

[0004] The purpose of the utility model is to solve the defects existing in the prior art, and to propose a chemical safety gas sampling device.

[0005] In order to achieve the above purpose, the utility model adopts the following technical scheme:

[0006] A chemical safety gas sampling device includes a support frame, a conveying device is fixedly installed in the middle of the support frame, fixing frames are fixedly installed on the conveying device at equal intervals and evenly, a collection tank is movably installed in the fixing frame, an air inlet pipe is fixedly installed at the top of the collection tank, a connecting frame is fixedly installed at the top of the support frame, the connecting frame is located above the conveying device, a movable block is arranged on the connecting frame, a connecting block is fixedly installed at the middle position of the movable block, an exhaust pipe is fixedly installed below the connecting block, a connecting pipe is fixedly connected above the connecting block, and the tail of the connecting pipe is connected to an air extraction device.

[0007] As a further solution of the present invention, a servo motor is fixedly installed on the side wall of the support frame, and the output end of the servo motor is fixedly connected to one end of the conveying device. A movable groove is provided on the left side of the connecting frame, and a reciprocating screw is movably installed in the movable groove. A driving motor is fixedly installed on the top of the connecting frame, and the output end of the driving motor is fixedly connected to the reciprocating screw. The left end of the movable block can be movably engaged in the movable groove, and a connecting groove is provided on the left end of the movable block, and the connecting groove can be movably sleeved on the reciprocating screw, and the texture in the connecting groove matches that on the reciprocating screw.

[0008] As a further solution of the present invention, a sealing block is provided inside the connecting block, a connecting rod is fixedly installed on the bottom of the sealing block, a control block is fixedly installed on the bottom side wall of the connecting rod, the connecting rod and the control block are located in the exhaust pipe, and a spring is fixedly installed on the top of the sealing block, and the top of the spring is in contact with the top surface of the inner wall of the connecting block.

[0009] As a further solution of the present invention, a sliding groove is provided on the right inner wall of the connecting frame, and the right end of the movable block can be movably installed in the sliding groove.

[0010] As a further solution of the present invention, the air intake pipe can be movably engaged in the exhaust pipe. When the air intake pipe is completely engaged in the exhaust pipe, the top can contact the control block, and the top of the air intake pipe can push the control block upward.

[0011] As a further solution of the present invention, a one-way valve is provided between the air inlet pipe and the collection tank, and the one-way valve is fixedly mounted on the air inlet pipe.

[0012] As a further solution of the present invention, a pressure gauge is provided on the top of the collection tank, and the pressure gauge is fixedly installed on the collection tank.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] 1. In the utility model, workers can quickly confirm the air pressure in the collection tank through the pressure gauge to determine whether the collection tank is full of gas. When the collection tank is full, the drive motor is started to rotate, driving the reciprocating screw to rotate, and controlling the movable block to move upward. At this time, the exhaust pipe will be removed from the intake pipe, and the servo motor is started at the same time. The servo motor drives the conveyor to rotate and move the new collection tank to the bottom of the exhaust pipe. At this time, through the continuous rotation of the reciprocating screw, the movable block rises to the top and then moves downward, and the exhaust pipe is put on the new intake pipe to collect gas, thereby achieving automatic replacement of the collection tank, which is very convenient.

[0015] 2. In the present utility model, the one-way valve installed on the intake pipe can ensure that only air can enter the intake pipe during sampling and air cannot escape, avoiding gas leakage from the intake pipe. During sampling, only when the intake pipe completely enters the exhaust pipe, the top of the intake pipe will push up the control block, causing the sealing block to move upward and opening the bottom of the connecting block, can gas flow out from the connecting block. When the intake pipe is pulled out, the elastic force of the spring will quickly reset the sealing block to seal the bottom of the connecting block, avoiding chemical gas leakage, thus achieving the effect of ensuring the safety of surrounding workers when replacing the sampling tank. Brief Description of the Drawings

[0016] Figure 1 It is a schematic diagram of the overall structure of a chemical safety gas sampling device proposed by the present utility model;

[0017] Figure 2 It is a schematic diagram of the partial structure of a chemical safety gas sampling device proposed by the present utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of the parts of a chemical safety gas sampling device proposed by the present utility model;

[0019] Figure 4 It is a schematic diagram of the transmission device structure of a chemical safety gas sampling device proposed by the present utility model;

[0020] In the figure: 1, support frame; 2, transmission device; 3, fixing frame; 4, sampling tank; 5, servo motor; 6, connecting frame; 7, intake pipe; 8, one-way valve; 9, pressure gauge; 10, movable block; 11, connecting block; 12, chute; 13, movable groove; 14, reciprocating lead screw; 15, drive motor; 16, connecting pipe; 17, connecting groove; 18, exhaust pipe; 19, spring; 20, sealing block; 21, connecting rod; 22, control block. Detailed Embodiment

[0021] To make the technical means, creative features, achieved purposes and functions of the present utility model easy to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0022] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "upper", "lower", "inner", "outer", "front end", "rear end", "both ends", "one end", "the other end", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "provided with," "connected," etc. should be understood in a broad sense. For example, "connected" can mean a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components. Those skilled in the art will be able to understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0024] Reference Figure 1 - Figure 4 A chemical safety gas sampling device includes a support frame 1, a conveying device 2 is fixedly installed in the middle of the support frame 1, a fixing frame 3 is evenly fixedly installed on the conveying device 2, a collecting tank 4 is movably installed in the fixing frame 3, an air inlet pipe 7 is fixedly installed on the top of the collecting tank 4, a connecting frame 6 is fixedly installed on the top of the support frame 1, the connecting frame 6 is above the conveying device 2, a movable block 10 is provided on the connecting frame 6, a connecting block 11 is fixedly installed in the middle position of the movable block 10, an exhaust pipe 18 is fixedly installed below the connecting block 11, a connecting pipe 16 is fixedly connected to the top of the connecting block 11, and the tail end of the connecting pipe 16 is connected to the exhaust device.

[0025] In this embodiment, a servo motor 5 is fixedly mounted on the side wall of the support frame 1, and the output end of the servo motor 5 is fixedly connected to one end of the conveying device 2. A movable groove 13 is provided on the left side of the connecting frame 6, and a reciprocating screw rod 14 is movably installed in the movable groove 13. A drive motor 15 is fixedly mounted on the top of the connecting frame 6, and the output end of the drive motor 15 is fixedly connected to the reciprocating screw rod 14. The left end of the movable block 10 can be movably engaged in the movable groove 13. A connecting groove 17 is provided on the left end of the movable block 10, and the connecting groove 17 can be movably sleeved on the reciprocating screw rod. On the screw rod 14, the texture in the connecting groove 17 matches that on the reciprocating screw rod 14. The drive motor 15 is started to rotate, driving the reciprocating screw rod 14 to rotate, controlling the movable block 10 to move upward. At this time, the exhaust pipe 18 will be removed from the air intake pipe 7. At the same time, the servo motor 5 is started, and the servo motor 5 drives the conveyor 2 to rotate and move the new collection tank 4 to the bottom of the exhaust pipe 18. At this time, the movable block 10 will move downward after reaching the top of the rise through the continuous rotation of the reciprocating screw rod 14, so that the exhaust pipe 18 is covered on the new air intake pipe 7 to collect gas.

[0026] In this embodiment, a sealing block 20 is arranged inside the connecting block 11. A connecting rod 21 is fixedly installed at the bottom of the sealing block 20. A control block 22 is fixedly installed on the bottom side wall of the connecting rod 21. The connecting rod 21 and the control block 22 are located inside the exhaust pipe 18. A spring 19 is fixedly installed at the top of the sealing block 20. The top of the spring 19 contacts the top surface of the inner wall of the connecting block 11. When the intake pipe 7 is pulled out, the sealing block 20 will be quickly reset by the elastic force of the spring 19 to seal the bottom of the connecting block 11, avoiding the leakage of chemical gas.

[0027] In this embodiment, a chute 12 is formed on the right inner wall of the connecting frame 6. The right end of the movable block 10 can be movably installed in the chute 12.

[0028] In this embodiment, the intake pipe 7 can be movably clamped inside the exhaust pipe 18. When the intake pipe 7 is completely inserted into the exhaust pipe 18, its top can contact the control block 22. The top of the intake pipe 7 can push the control block 22 upward. Only when the intake pipe 7 completely enters the exhaust pipe 18 can the top of the intake pipe 7 lift the control block 22.

[0029] In this embodiment, a one-way valve 8 is arranged between the intake pipe 7 and the collection tank 4. The one-way valve 8 is fixedly installed on the intake pipe 7. By means of the one-way valve 8 installed on the intake pipe 7, it can be ensured that only air can enter the intake pipe 7 during collection and no air can escape, avoiding the leakage of gas from the intake pipe 7.

[0030] In this embodiment, a pressure gauge 9 is arranged on the top of the collection tank 4. The pressure gauge 9 is fixedly installed on the collection tank 4. Through the pressure gauge 9, workers can quickly confirm the air pressure inside the collection tank 4 and determine whether the collection tank 4 is full of gas.

[0031] From the above description, it can be seen that the above embodiments of the present utility model achieve the following technical effects: Through the pressure gauge 9, workers can quickly confirm the air pressure inside the collection tank 4 and determine whether the collection tank 4 is full of gas. When the collection tank 4 is full, the driving motor 15 is started to rotate, driving the reciprocating lead screw 14 to rotate, controlling the movable block 10 to move upward. At this time, the exhaust pipe 18 will be removed from the intake pipe 7. At the same time, the servo motor 5 is started. The servo motor 5 drives the conveying device 2 to rotate to move a new collection tank 4 under the exhaust pipe 18. At this time, through the continuous rotation of the reciprocating lead screw 14, after the movable block 10 reaches the top, it will move downward, so that the exhaust pipe 18 is sleeved on the new intake pipe 7 to collect gas. By means of the one-way valve 8 installed on the intake pipe 7, it can be ensured that only air can enter the intake pipe 7 during collection and no air can escape, avoiding the leakage of gas from the intake pipe 7. Only when the intake pipe 7 completely enters the exhaust pipe 18 during collection, the top of the intake pipe 7 lifts the control block 22 to move the sealing block 20 upward to open the bottom of the connecting block 11 can gas flow out from the connecting block 11. When the intake pipe 7 is pulled out, the sealing block 20 will be quickly reset by the elastic force of the spring 19 to seal the bottom of the connecting block 11, avoiding the leakage of chemical gas.

[0032] The foregoing has shown and described the basic principles, main features and advantages of the present utility model. Those skilled in the art should understand that the present utility model is not limited by the above-mentioned embodiments, and what is described in the above-mentioned embodiments and the specification is only to illustrate the principle of the present utility model. Without departing from the spirit and scope of the present utility model, the present utility model will also have various changes and improvements, and these changes and improvements fall within the scope of the present utility model claimed. The scope of protection claimed by the present utility model is defined by the appended claims and their equivalents.

Claims

1. A chemical safety gas sampling device, comprising a support frame (1), characterized in that, A conveying device (2) is fixedly installed in the middle of the support frame (1), a fixing frame (3) is fixedly installed on the conveying device (2) at equal intervals, a collecting tank (4) is movably installed in the fixing frame (3), an air inlet pipe (7) is fixedly installed on the top of the collecting tank (4), a connecting frame (6) is fixedly installed on the top of the support frame (1), the connecting frame (6) is located above the conveying device (2), a movable block (10) is provided on the connecting frame (6), a connecting block (11) is fixedly installed in the middle position of the movable block (10), an exhaust pipe (18) is fixedly installed below the connecting block (11), a connecting pipe (16) is fixedly connected to the top of the connecting block (11), and the tail end of the connecting pipe (16) is connected to the air extraction device.

2. The chemical safety gas sampling device according to claim 1, characterized in that, A servo motor (5) is fixedly mounted on the side wall of the support frame (1), and the output end of the servo motor (5) is fixedly connected to one end of the conveying device (2). A movable groove (13) is provided on the left side of the connecting frame (6), and a reciprocating screw rod (14) is movably mounted in the movable groove (13). A driving motor (15) is fixedly mounted on the top of the connecting frame (6), and the output end of the driving motor (15) is fixedly connected to the reciprocating screw rod (14). The left end of the movable block (10) can be movably engaged in the movable groove (13). A connecting groove (17) is provided on the left end of the movable block (10), and the connecting groove (17) can be movably sleeved on the reciprocating screw rod (14). The texture in the connecting groove (17) matches that on the reciprocating screw rod (14).

3. The chemical safety gas sampling device according to claim 1, characterized in that, A sealing block (20) is provided inside the connecting block (11), a connecting rod (21) is fixedly installed at the bottom of the sealing block (20), a control block (22) is fixedly installed on the bottom side wall of the connecting rod (21), the connecting rod (21) and the control block (22) are located in the exhaust pipe (18), a spring (19) is fixedly installed at the top of the sealing block (20), and the top of the spring (19) contacts the top surface of the inner wall of the connecting block (11).

4. A chemical safety gas sampling device according to claim 1, characterized in that, A sliding groove (12) is provided on the right inner wall of the connecting frame (6), and the right end of the movable block (10) can be movably installed in the sliding groove (12).

5. The chemical safety gas sampling device according to claim 1, characterized in that, The air intake pipe (7) can be movably engaged in the exhaust pipe (18); when the air intake pipe (7) is completely engaged in the exhaust pipe (18), the top of the air intake pipe (7) can contact the control block (22); and the top of the air intake pipe (7) can push the control block (22) upward.

6. The chemical safety gas sampling device according to claim 1, characterized in that, A one-way valve (8) is provided between the air inlet pipe (7) and the collection tank (4), and the one-way valve (8) is fixedly mounted on the air inlet pipe (7).

7. A chemical safety gas sampling device according to claim 1, characterized in that, A pressure gauge (9) is provided on the top of the collection tank (4), and the pressure gauge (9) is fixedly mounted on the collection tank (4).

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