Low-concentration gas conveying and filtering device

Abstract

The utility model belongs to the technical field of filtering devices, and particularly relates to a low-concentration gas conveying and filtering device which comprises a filtering box body, a gas inlet pipe is connected to the surface of one side of the filtering box body, a gas outlet pipe is connected to the surface of the other side of the filtering box body, and a containing groove is formed in the surface of the top of the filtering box body. The filtering device is installed on the low-concentration gas conveying pipeline, the silk screen filter and the non-woven fabric filter can conduct multi-stage filtering on the conveyed low-concentration gas, and therefore impurity particles mixed in the low-concentration gas are filtered out, the mixed impurity particles are prevented from entering utilization equipment, and the cleaning mechanism is arranged to clean the low-concentration gas. The PLC control switch can start the electric push rod in a timing mode, the movable end of the electric push rod drives bristles on the cleaning brush to clean the surface of the silk screen filter, the number of impurity particles accumulated on one side of the silk screen filter is reduced, and therefore the maintenance frequency of the silk screen filter within fixed time is reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of filtering devices, and in particular relates to a low-concentration gas conveying filtering device. Background Art

[0002] Low-concentration gas, also known as coalbed methane, is a type of hydrocarbon gas attached to the surface of coal matrix particles in coal or dissolved in coalbed water, its main component is methane.

[0003] With the continuous development of science and technology, the speed of coal mining has gradually increased. Coal mining usually produces low-concentration gas, so operators need to transport these low-concentration gases out before they can be used. However, during the mining process, low-concentration gases are easily mixed with impurity particles. If they are directly transported out without filtering, these impurity particles will easily enter the utilization equipment, causing wear on the equipment and affecting the normal operation of the equipment.

[0004] Therefore, the utility model provides a low-concentration gas conveying and filtering device to solve the above-mentioned problem. Utility Model Content

[0005] The purpose of the utility model is to provide a low-concentration gas conveying and filtering device, aiming to solve the problem in the prior art that low-concentration gas is easily mixed with impurity particles during the mining process and is directly conveyed out without filtering, which easily causes these impurity particles to enter the utilization equipment, thereby causing wear and tear on the equipment.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a low-concentration gas conveying and filtering device, comprising a filter box body, one side surface of the filter box body is connected to the air inlet pipe, and the other side surface of the filter box body is connected to the air outlet pipe, the filter box body has a placement groove on the top surface, one of the inner surfaces of the placement groove is connected to the wire mesh filter, and the other inner surface of the placement groove is connected to the non-woven filter, the wire mesh filter and the non-woven filter are connected to the outer surfaces at one end of the filter box body. One end of the sealing ring is connected to the card slot opened in the interior of the filter box body, and the surface of one end of the filter box body is connected to a hinge, and the movable end surface of the hinge is connected to a baffle, and the top surface of one end of the baffle is penetrated and connected with a butterfly bolt, and one end of the butterfly bolt extends into the fixing hole opened on the top surface of the filter box body, and the top surface of the filter box body outside the placement groove is provided with a groove, and the top surface of one end of the filter box body is connected with a cleaning mechanism.

[0007] In order to achieve regular cleaning of the surface of one side of the wire mesh filter and collection of the cleaned impurity particles, as a preferred low-concentration gas conveying and filtering device of the utility model, the cleaning mechanism includes: an electric push rod, a cleaning brush, a guide groove, a collecting box, a sealing door panel and a transparent observation window, the top surface of one end of the filter box body is connected with an electric push rod, the movable end of the electric push rod passes through the filter box body and is connected with the top surface of the cleaning brush, the bottom surface of the filter box body at the bottom end of the cleaning brush is provided with a guide groove, the bottom surface of the filter box body outside the guide groove is connected with a collecting box, the bottom surface of the collecting box is provided with a sealing door panel, and the front end surface of the collecting box is provided with a transparent observation window.

[0008] In order to realize the circulation of low-concentration gas inside the filter box, as a preferred low-concentration gas conveying and filtering device of the utility model, the air inlet pipe and the air outlet pipe are connected to the position of the internal space of the filter box.

[0009] In order to achieve the placement of the wire mesh filter and the non-woven fabric filter and improve the sealing between the wire mesh filter, the non-woven fabric filter and the filter box body, as a preferred low-concentration gas conveying and filtering device of the utility model, the wire mesh filter or the non-woven fabric filter is slidably connected to the filter box body through the placement groove, and the sealing ring is snap-fitted with the filter box body through the snap groove.

[0010] In order to fix the position of the baffle, as a preferred low-concentration gas conveying and filtering device of the utility model, the butterfly bolt is threadedly connected by penetrating through the baffle and the fixing hole.

[0011] In order to realize the normal operation control of the electric push rod and the sliding of the cleaning brush inside the filter box body, as a preferred low-concentration gas conveying and filtering device of the utility model, the electric push rod is electrically connected to the external power supply through a PLC control switch, and a sliding connection is formed between the cleaning brush and the filter box body.

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

[0013] The utility model installs the filtering device on the low-concentration gas conveying pipeline, so that the wire mesh filter and the non-woven fabric filter can perform multi-stage filtration on the conveyed low-concentration gas, thereby filtering out the impurity particles mixed in the low-concentration gas and preventing the mixed impurity particles from entering the utilization equipment.

[0014] The utility model provides a cleaning mechanism so that the PLC control switch can start the electric push rod at a fixed time, so that the movable end of the electric push rod drives the bristles on the cleaning brush to clean the surface of the wire mesh filter, thereby reducing the amount of debris particles accumulated on one side of the wire mesh filter, thereby reducing the number of times the wire mesh filter needs to be maintained within a fixed time. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0016] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0018] Figure 3 For this utility model Figure 2 A schematic diagram of the partially enlarged structure at center A;

[0019] Figure 4 It is a schematic diagram of the partial cross-sectional structure of the guide groove of the utility model.

[0020] In the figure: 1. filter box body; 2. air inlet pipe; 3. air outlet pipe; 4. placement slot; 5. wire mesh filter; 6. non-woven filter; 7. sealing ring; 8. slot; 9. hinge; 10. baffle; 11. butterfly bolt; 12. fixing hole; 13. groove; 14. electric push rod; 15. cleaning brush; 16. guide groove; 17. collection box; 18. sealing door panel; 19. transparent observation window. DETAILED DESCRIPTION

[0021] 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.

[0022] See also Figure 1-Figure 4The utility model provides the following technical solutions: a low-concentration gas conveying and filtering device comprises a filter box body 1, one side surface of the filter box body 1 is connected to an air inlet pipe 2, and the other side surface of the filter box body 1 is connected to an air outlet pipe 3, a placement groove 4 is provided on the top surface of the filter box body 1, a wire mesh filter 5 is connected to the inner surface of one placement groove 4, and a non-woven filter 6 is connected to the inner surface of the other placement groove 4, and the outer surfaces of one end of the wire mesh filter 5 and the non-woven filter 6 are connected to a sealing ring 7, one end of the sealing ring 7 extends into a card slot 8 opened in the filter box body 1, a hinge 9 is connected to the surface of one end of the filter box body 1, a baffle 10 is connected to the movable end surface of the hinge 9, a butterfly bolt 11 is penetrated and connected to the top surface of one end of the baffle 10, and one end of the butterfly bolt 11 extends into the fixing hole 12 opened on the top surface of the filter box body 1, a groove 13 is provided on the top surface of the filter box body 1 outside the placement groove 4, and a cleaning mechanism is connected to the top surface of one end of the filter box body 1.

[0023] Preferably: the cleaning mechanism includes: an electric push rod 14, a cleaning brush 15, a guide groove 16, a collecting box 17, a sealing door plate 18 and a transparent observation window 19, the electric push rod 14 is connected to the top surface at one end of the filter box body 1, the movable end of the electric push rod 14 passes through the filter box body 1 and is connected to the top surface of the cleaning brush 15, the bottom surface of the filter box body 1 at the bottom end of the cleaning brush 15 is provided with a guide groove 16, the bottom surface of the filter box body 1 outside the guide groove 16 is connected to the collecting box 17, the bottom surface of the collecting box 17 is provided with a sealing door plate 18, and the front end surface of the collecting box 17 is provided with a transparent observation window 19.

[0024] During specific use, the electric push rod 14 is started, and the movable end of the electric push rod 14 drives the cleaning brush 15 to move up and down in the filter box body 1. In this way, when the cleaning brush 15 moves, the bristles on one side of the cleaning brush 15 will clean the wire mesh filter 5, so that the larger particles of impurities intercepted on one side of the wire mesh filter 5 will be cleaned up by the bristles, so that the larger particles of impurities will fall into the guide groove 16, and then enter the collection box 17 from the guide groove 16 for centralized collection. The operator can observe the collection of impurities inside the collection box 17 through the transparent observation window 19, and can open the sealing door panel 18 to discharge the impurity particles collected inside the collection box 17 when appropriate.

[0025] Preferably, the air inlet pipe 2 and the air outlet pipe 3 are connected to the inner space of the filter box body 1 .

[0026] During specific use, unfiltered low-concentration gas can enter the filter box body 1 through the air inlet pipe 2, so that the filter box body 1 can filter the low-concentration gas, and the filtered low-concentration gas can be transported out through the air outlet pipe 3.

[0027] Preferably, the wire mesh filter 5 or the non-woven fabric filter 6 is slidably connected to the filter box body 1 through the placement groove 4, and the sealing ring 7 is engaged with the filter box body 1 through the engagement groove 8.

[0028] During specific use, the wire mesh filter 5 and the non-woven filter 6 can slide in the placement groove 4 on the filter box body 1. When the wire mesh filter 5 and the non-woven filter 6 are completely slid into the placement groove 4, the wire mesh filter 5 and the non-woven filter 6 will drive the sealing ring 7 at the top to move to the position of the card groove 8, so that the sealing ring 7 is elastically engaged in the card groove 8, thereby increasing the sealing between the wire mesh filter 5 and the non-woven filter 6 and the filter box body 1. It should be particularly noted here that the wire mesh filter 5 and the non-woven filter 6 can be customized into the required shape according to needs.

[0029] Preferably, the butterfly bolt 11 penetrates through the baffle 10 and forms a threaded connection with the fixing hole 12 .

[0030] When in use, the butterfly bolt 11 is passed through the baffle 10 and screwed into the fixing hole 12 , so that the baffle 10 can be fixed on the filter box body 1 , so that the baffle 10 can cover the placement slot 4 .

[0031] Preferably, the electric push rod 14 is electrically connected to an external power source through a PLC control switch, and a sliding connection is formed between the cleaning brush 15 and the filter box body 1 .

[0032] During specific use, the PLC control switch model is a S7-200 small PLC control switch. The PLC control switch can be programmed to switch the connected equipment on and off at a fixed time. A Hall sensor is provided on the motor stator inside the electric push rod 14, and the signal output line of the Hall sensor is connected to the digital input interface of the PLC control switch. In this way, by programming the PLC control switch, the PLC control switch can start the electric push rod 14 at a fixed time, so that the active end of the electric push rod 14 can move according to the set data, so that the active end of the electric push rod 14 can drive the cleaning brush 15 to slide inside the filter box body 1.

[0033] Working principle: When using the low-concentration gas transmission and filtering device, install the filter box body 1 at the designated position, connect the air inlet pipe 2 and the air outlet pipe 3 on the filter box body 1 to the low-concentration gas transmission pipeline respectively, then slide the wire mesh filter 5 and the non-woven filter 6 into the placement groove 4, and let the sealing ring 7 on the wire mesh filter 5 and the non-woven filter 6 be engaged in the card groove 8, thereby increasing the sealing between the wire mesh filter 5 and the non-woven filter 6 and the filter box body 1, and then rotate the hinge 9 to block the The butterfly bolt 11 penetrates the baffle plate 10 and is screwed into the fixing hole 12, so that the baffle plate 10 can cover the opening at the top of the placement groove 4, and the wire mesh filter 5 and the non-woven filter 6 are fixed in the placement groove 4. In this way, when the low-concentration gas enters the filter box body 1 through the air inlet pipe 2, it will first pass through the wire mesh filter 5 to filter out larger particles of impurities, and then pass through the non-woven filter 6 to filter out the remaining fine impurities. In this way, the low-concentration gas after the impurity particles are filtered out will be transported to the pipe through the air outlet pipe 3. The filter 15 is a filter element that is used to filter the filter 5. The filter 15 is a filter element that is used to filter the filter 5. The filter 15 is a filter element that is used to filter the filter 5. The filter 15 is a filter element that is used to filter the filter 5.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A low-concentration gas transmission and filtering device, comprising a filter box (1), characterized in that: The filter box body (1) is connected to an air inlet pipe (2) on one side surface and to an air outlet pipe (3) on the other side surface of the filter box body (1); a placement groove (4) is provided on the top surface of the filter box body (1); a wire mesh filter (5) is connected to the inner surface of one placement groove (4); a non-woven filter (6) is connected to the inner surface of the other placement groove (4); a sealing ring (7) is connected to the outer surface of one end of each of the wire mesh filter (5) and the non-woven filter (6); one end of the sealing ring (7) extends into the filter box body ( 1), a hinge (9) is connected to the surface of one end of the filter box body (1), a baffle (10) is connected to the surface of the movable end of the hinge (9), a butterfly bolt (11) is connected to the top surface of one end of the baffle (10), one end of the butterfly bolt (11) extends into a fixing hole (12) provided on the top surface of the filter box body (1), a groove (13) is provided on the top surface of the filter box body (1) outside the placement groove (4), and a cleaning mechanism is connected to the top surface of one end of the filter box body (1).

2. A low-concentration gas conveying and filtering device according to claim 1, characterized in that: The cleaning mechanism comprises: an electric push rod (14), a cleaning brush (15), a guide groove (16), a collection box (17), a sealing door plate (18) and a transparent observation window (19); the top surface at one end of the filter box body (1) is connected to the electric push rod (14); the movable end of the electric push rod (14) passes through the filter box body (1) and is connected to the top surface of the cleaning brush (15); the bottom surface of the filter box body (1) at the bottom end of the cleaning brush (15) is provided with a guide groove (16); the bottom surface of the filter box body (1) outside the guide groove (16) is connected to the collection box (17); the bottom surface of the collection box (17) is provided with a sealing door plate (18), and the front end surface of the collection box (17) is provided with a transparent observation window (19).

3. A low-concentration gas conveying and filtering device according to claim 1, characterized in that: The air inlet pipe (2) and the air outlet pipe (3) are connected to the internal space of the filter box body (1).

4. A low-concentration gas conveying and filtering device according to claim 1, characterized in that: The wire mesh filter (5) or the non-woven fabric filter (6) is slidably connected to the filter box body (1) via the placement groove (4), and the sealing ring (7) is engaged with the filter box body (1) via the engagement groove (8).

5. A low-concentration gas conveying and filtering device according to claim 1, characterized in that: The butterfly bolt (11) penetrates the baffle plate (10) and forms a threaded connection with the fixing hole (12).

6. A low-concentration gas conveying and filtering device according to claim 2, characterized in that: The electric push rod (14) is electrically connected to an external power source via a PLC control switch, and a sliding connection is formed between the cleaning brush (15) and the filter box body (1).

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