Negative pressure extraction device for gas control

Abstract

The utility model relates to the technical field of gas extraction, in particular to a negative pressure extraction device for gas control, which comprises a primary filter box, a cavity is arranged in the primary filter box, the side wall of the primary filter box is communicated by a gas inlet pipe and is fixedly connected with the gas inlet pipe, a secondary filter box is arranged on one side of the primary filter box, and a gas outlet pipe is arranged on the other side of the secondary filter box. A crushing sieve is arranged in the first-stage filter box and is parallel to the horizontal plane, and an absorbent cotton layer is fixedly arranged in the second-stage filter box; firstly, gas bubbles are crushed through the crushing sieve arranged in the first-stage filter box, so that dust in the gas bubbles is in contact with water, the dust content in gas is reduced, then the gas enters the second-stage filter box from the first-stage filter box, the gas is secondarily filtered by the second-stage filter box, and the dust content in the gas is reduced. And the dust content in the gas is further reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of gas extraction, in particular to a negative pressure extraction device for gas management. Background Art

[0002] The gas negative pressure extraction device is a tool specially used in coal mines, metallurgy, chemical industry, coking, gas stations, tunnel engineering, environmental protection and health and epidemic prevention departments to extract gas pipeline systems and collect gas under negative pressure;

[0003] Patent publication number CN218293648U discloses a gas negative pressure extraction device, and its technical solution includes: a bottom shell, a sealing baffle is fixedly installed on the front of the bottom shell by installing screws, filtered water is injected into the bottom shell, a groove is opened at the bottom of the front of the bottom shell and a collection trough is movably inserted, the back of the sealing baffle is fixedly connected to the front of the collection trough, the front of the sealing baffle is grooved and an observation window is embedded and installed, the top of the bottom shell is connected and installed with a top shell, a hole is opened at the bottom of one side of the top shell and an air intake pipe is embedded and installed, the connection between the top shell and the bottom shell is filled with absorbent cotton, and a hole is opened on one side of the bottom shell and connected and installed with a drain pipe; although the gas negative pressure extraction device solves the problem that water and residue in the gas affect the gas transportation, large bubbles will appear when the air intake pipe is inserted into the filtered water and the exhaust is exhausted, and the dust in the bubbles does not have enough time to fully contact with the water, resulting in a low dust removal rate contained in the gas. Utility Model Content

[0004] The purpose of the utility model is to provide a negative pressure extraction device for gas management, which solves the problems raised in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the utility model is achieved through the following technical solutions:

[0006] The utility model is a negative pressure extraction device for gas treatment, comprising a primary filter box, wherein a cavity is provided in the primary filter box, a side wall of the primary filter box is penetrated by an air inlet pipe and is fixedly connected to the air inlet pipe, a secondary filter box is arranged on one side of the primary filter box, a crushing screen is arranged in the primary filter box, the crushing screen is arranged parallel to a horizontal plane, and a water-absorbing cotton layer is fixedly arranged in the secondary filter box.

[0007] Furthermore, one end of the connecting pipe penetrates through the top plate of the primary filter box and is fixedly connected to the connecting pipe, and the other end of the connecting pipe penetrates through the top plate of the secondary filter box and is fixedly connected to the secondary filter box.

[0008] Furthermore, two crushing screens are provided, each of which is provided with a plurality of evenly distributed screen holes, and the screen holes penetrate the crushing screen.

[0009] Furthermore, the air inlet pipe passes through the crushing screen and is fixedly connected to the crushing screen, and the end surface of the end of the crushing screen located in the primary filter box is located below the bottom surface of the crushing screen.

[0010] Furthermore, a side wall of the secondary filter box away from the primary filter box is penetrated by an exhaust pipe, and the exhaust pipe is fixedly connected to the secondary filter box.

[0011] Furthermore, the connecting tube passes through the water-absorbent cotton layer, and the bottom surface of the connecting tube is located below the bottom surface of the water-absorbent cotton layer.

[0012] Furthermore, the exhaust pipe is located above the top surface of the water-absorbent cotton layer.

[0013] Furthermore, the side wall of the primary filter box is penetrated by a drain elbow and fixedly connected to the drain elbow, the top end of the drain elbow is slidably connected to a drain cylinder, and a water outlet hole is opened on the side wall of the drain cylinder.

[0014] The utility model has the following beneficial effects:

[0015] The utility model filters the extracted gas through a primary filter box, and the gas enters the primary filter box through an air inlet pipe and is discharged from below the crushing screen. During the rising process of the gas bubbles, the gas bubbles collide with the crushing screen and are crushed, so that the dust in the gas bubbles can contact with water and remain in the water;

[0016] The utility model further filters the gas through the secondary filter box. After being processed by the primary filter box, the gas enters the secondary filter box through the connecting pipe and is processed again by the secondary filter box, thereby improving the removal rate of dust in the gas.

[0017] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0019] Figure 1 This is a schematic diagram of the overall appearance structure of the utility model;

[0020] Figure 2 It is the front view of the utility model;

[0021] Figure 3 It is a cross-sectional view of the utility model;

[0022] Figure 4 for Figure 1 A side sectional view of the first-stage filter box;

[0023] Figure 5 This is a schematic diagram of the structure of the crushing screen of the utility model;

[0024] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0025] In the figure: 1. primary filter box; 2. secondary filter box; 3. crushing screen; 4. absorbent cotton layer; 5. drainage elbow; 6. drainage cylinder; 101. air inlet pipe; 102. connecting pipe; 201. exhaust pipe; 301. sieve hole; 601. water outlet hole. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] In the description of the present invention, it should be understood that terms such as "opening", "upper", "lower", "thickness", "top", "middle", "length", "inside", "all around" and the like indicating orientation or positional relationship are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0028] See also Figure 1-5As shown, the utility model is a negative pressure extraction device for gas treatment, including a primary filter box 1, a cavity is provided in the primary filter box 1, the side wall of the primary filter box 1 is penetrated by an air inlet pipe 101 and is fixedly connected to the air inlet pipe 101, a secondary filter box 2 is arranged on one side of the primary filter box 1, a crushing screen 3 is arranged in the primary filter box 1, the crushing screen 3 is arranged parallel to the horizontal plane, a water-absorbing cotton layer 4 is fixedly arranged in the secondary filter box 2, two crushing screens 3 are arranged, the crushing screen 3 is provided with a plurality of evenly distributed sieve holes 301, the sieve holes 301 penetrate the crushing screen 3, the air inlet pipe 101 penetrates the crushing screen 3 and is fixedly connected to the crushing screen 3, the end face of the end of the crushing screen 3 located in the primary filter box 1 is located below the bottom face of the crushing screen 3; in this embodiment, the gas enters the primary filter box 1 through the air inlet pipe 101 for filtering, the water and dust sucked in by the air inlet pipe 101, the gas bubbles move upward from the bottom of the crushing screen 3, and then pass through the sieve holes 301 of the filter screen, the gas bubbles hit the crushing screen 3 and break, so that the dust in the gas bubbles can contact with water, thereby improving the dust removal rate, and then the gas enters the secondary filter box 2 through the primary filter box 1, and the gas is filtered again by the secondary filter box 2, so as to further improve the gas dust removal rate.

[0029] Among them, the top plate of the first-level filter box 1 is penetrated by one end of the connecting pipe 102 and is fixedly connected to the connecting pipe 102, and the other end of the connecting pipe 102 penetrates the top plate of the second-level filter box 2 and is fixedly connected to the second-level filter box 2. In this embodiment, the gas filtered by the first-level filter box 1 enters the second-level filter box 2 through the connecting pipe 102, so that the second-level filter box 2 performs secondary filtration on the gas, further reducing the dust content in the gas and improving the dust removal rate.

[0030] Among them, the side wall of the secondary filter box 2 away from the primary filter box 1 is penetrated by the exhaust pipe 201, and the exhaust pipe 201 is fixedly connected to the secondary filter box 2. The exhaust pipe 201 is located above the top surface of the water-absorbent cotton layer 4. In this embodiment, the gas filtered by the secondary filter box 2 moves upward through the water-absorbent cotton layer 4, and the water-absorbent cotton layer 4 absorbs moisture in the gas, and finally the gas is discharged from the drain pipe. The setting of the crushing screen 3 in the primary filter box 1 and the secondary filter box 2 effectively reduces the dust content in the gas and prevents the water-absorbent cotton layer 4 from being blocked by dust carried by the gas.

[0031] Among them, the side wall of the first-level filter box 1 is penetrated by the drainage bend pipe 5 and fixedly connected to the drainage bend pipe 5. The top of the drainage bend pipe 5 is slidably connected to the drainage cylinder 6. The side wall of the drainage cylinder 6 is provided with a water outlet 601. In this embodiment, when the water level of the filtered water is higher than the drainage bend pipe 5, the drainage cylinder 6 will be lifted up, and the water will be discharged from the water outlet hole 601, so that the first-level filter box 1 can achieve self-drainage.

[0032] It can be understood that, firstly, the utility model breaks up the gas bubbles through the crushing screen 3 arranged in the primary filter box 1, so that the dust in the gas bubbles can come into contact with water, thereby reducing the dust content in the gas. Secondly, the gas enters the secondary filter box 2 from the primary filter box 1, and the secondary filter box 2 performs secondary filtration on the gas, thereby further reducing the dust content in the gas.

[0033] A specific application of this embodiment is as follows: gas enters the primary filter box 1 through the air inlet pipe 101, and the gas entering the primary filter box 1 is discharged through one end of the air inlet pipe 101 located below the crushing screen 3. The gas moves upward, and the gas bubbles hit the crushing screen 3 to be crushed, so that the dust in the gas bubbles can contact with water and remain in the water. Then the gas enters the secondary filter box 2 from the primary filter box 1 through the connecting pipe 102, and the filtrate in the secondary filter box 2 performs secondary filtration on the gas, further reducing the gas in the gas. The dust content is reduced, and the dust removal rate is improved. Finally, the gas passes through the water-absorbing cotton layer 4 and is discharged from the exhaust pipe 201. The water-absorbing cotton layer 4 absorbs the moisture in the gas and makes the gas discharged from the drain pipe dry. The side wall of the primary filter box 1 is penetrated by the drainage elbow 5. As the gas enters the primary filter box 1, the liquid it carries will gradually increase the liquid level in the primary filter box 1. After the water level of the filtered water is higher than the drainage elbow 5, the filtered water will lift the drainage cylinder 6, and the filtered water will overflow from the water outlet 601, so that the primary filter box 1 can achieve self-drainage.

[0034] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0035] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A negative pressure extraction device for gas treatment, comprising a primary filter box (1), wherein a cavity is provided in the primary filter box (1), and a side wall of the primary filter box (1) is penetrated by an air intake pipe (101) and is fixedly connected to the air intake pipe (101), characterized in that: A secondary filter box (2) is arranged on one side of the primary filter box (1), a crushing screen (3) is arranged inside the primary filter box (1), and the crushing screen (3) is arranged parallel to a horizontal plane, and a water-absorbing cotton layer (4) is fixedly arranged inside the secondary filter box (2).

2. A negative pressure extraction device for gas management according to claim 1, characterized in that: The top plate of the primary filter box (1) is penetrated by one end of the connecting pipe (102) and is fixedly connected to the connecting pipe (102), and the other end of the connecting pipe (102) penetrates the top plate of the secondary filter box (2) and is fixedly connected to the secondary filter box (2).

3. A negative pressure extraction device for gas management according to claim 1, characterized in that: Two crushing screens (3) are provided, and the crushing screen (3) is provided with a plurality of evenly distributed screen holes (301), and the screen holes (301) pass through the crushing screen (3).

4. A negative pressure extraction device for gas management according to claim 1, characterized in that: The air inlet pipe (101) passes through the crushing screen (3) and is fixedly connected to the crushing screen (3); the end surface of the end of the air inlet pipe (101) located in the primary filter box (1) is located below the bottom surface of the crushing screen (3).

5. A negative pressure extraction device for gas management according to claim 1, characterized in that: The side wall of the secondary filter box (2) away from the primary filter box (1) is penetrated by an exhaust pipe (201), and the exhaust pipe (201) is fixedly connected to the secondary filter box (2).

6. A negative pressure extraction device for gas management according to claim 2, characterized in that: The connecting tube (102) passes through the water-absorbing cotton layer (4), and the bottom surface of the connecting tube (102) is located below the bottom surface of the water-absorbing cotton layer (4).

7. A negative pressure extraction device for gas management according to claim 5, characterized in that: The exhaust pipe (201) is located above the top surface of the water-absorbent cotton layer (4).

8. A negative pressure extraction device for gas management according to claim 1, characterized in that: The side wall of the primary filter box (1) is penetrated by a drain bend pipe (5) and is fixedly connected to the drain bend pipe (5); the top end of the drain bend pipe (5) is slidably connected to a drain cylinder (6); and a water outlet hole (601) is provided on the side wall of the drain cylinder (6).

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