Small filtering device for gas pipeline

Abstract

The utility model relates to the technical field of gas filtering, in particular to a small filtering device for a gas pipeline. The air purifier comprises a purifier body, a cavity is formed in the purifier body, a filter pipe is fixedly arranged in the cavity, the filter pipe is detachably connected with a filter component, and an opening and closing structure right opposite to the filter pipe is arranged on the purifier body; during use, the gas inlet channel and the gas outlet channel of the machine body are connected with the gas pipeline, gas enters the cavity of the machine body through the gas inlet channel, then the gas flows to the filtering part, the filtering part is connected with the filtering pipe, the gas is sequentially filtered by the filtering part under the action of pressure, and the filtering part mainly intercepts impurities in the gas; the fuel gas filtered by the filtering part is finally discharged to a fuel gas pipeline through the filtering pipe and a gas outlet channel communicated with the filtering pipe; when the filtering part is replaced, the opening and closing structure right opposite to the filtering pipe is opened, the filtering part on the filtering pipe can be visually exposed, and the filtering part on the filtering pipe can be conveniently and rapidly replaced.

Description

TECHNICAL FIELD

[0001] The utility model relates to gas filter technical field especially, it is a kind of small filter device for gas pipeline. BACKGROUND

[0002] Gas is the general term of gaseous fuel, it can burn and release heat, for city residents and industrial enterprises use.Gas filter device is indispensable on the conveying medium pipeline A kind of device, usually installed in pressure reducing valve, pressure relief valve, positioning valve or other equipment import, to eliminate the impurities in gas, to protect the normal use of valve and equipment, reduce equipment maintenance cost.Filter core in gas filter device needs to be replaced irregularly.

[0003] Therefore, the applicant considers designing a small filter device for gas pipeline which can conveniently replace filter core. UTILITY MODEL CONTENT

[0004] In view of the above prior art, the technical problem to be solved by the utility model is: how to provide a small filter device for gas pipeline which can conveniently replace filter core.

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

[0006] A small filter device for gas pipeline, comprising a body, a cavity is arranged in the body, a filter pipe is fixedly arranged in the cavity, the filter pipe is detachably connected with a filter component, an opening and closing structure opposite to the filter pipe is arranged on the body;

[0007] An air inlet channel and an air outlet channel are arranged on the body, the air inlet channel is communicated with the cavity, and the air outlet channel is communicated with the filter pipe; gas enters the cavity through the air inlet channel, then passes through the filter component and the filter pipe, and finally is discharged through the air outlet channel.

[0008] The working principle and advantages of the small filter device for gas pipeline are as follows:

[0009] When in use, the air inlet channel and the air outlet channel of the body are connected with the gas pipeline, so that gas enters the cavity of the body through the air inlet channel, then flows to the filter component, and passes through the filter component under the action of pressure since the filter component is connected with the filter pipe, the filter component mainly intercepts impurities in gas, and the filtered gas is finally discharged to the gas pipeline through the filter pipe and the air outlet channel communicated with the filter pipe; when replacing the filter component, the opening and closing structure opposite to the filter pipe is opened, and the body is opened, so that the filter component on the filter pipe is exposed directly, and the filter component on the filter pipe can be replaced quickly.

[0010] Further, the cavity is provided with a boss, the filter pipe is fixedly arranged on the boss and one end of the filter pipe is in communication with the inside of the boss, the other end of the filter pipe protrudes from the boss and forms a connecting part connected with the filter part, and the boss is provided with a recess.

[0011] Further, the cavity is cylindrical, and the recess is in the shape of a circular arc groove.

[0012] Further, the machine body is provided with a pressure gauge for testing the pressure in the cavity.

[0013] Further, the machine body is provided with a pressure testing channel in communication with the cavity, the outer wall of the machine body is provided with a mounting channel in communication with the pressure testing channel, the pressure gauge is sealingly mounted in the mounting channel, and the pressure testing channel is arranged in the boss.

[0014] Further, the air inlet channel and the air outlet channel are arranged in a straight line or at an included angle.

[0015] Further, the machine body is provided with a connecting pipe fixedly connected to the machine body, the connecting pipe is in communication with the air inlet channel or the air outlet channel, and the free end of the connecting pipe is provided with a connecting thread or a connecting flange.

[0016] Further, the opening and closing structure comprises an opening and closing pipe fixedly connected to the machine body and an opening and closing cover, the inner side wall of the opening and closing cover is threadedly connected to the outer side wall of the opening and closing pipe, and a first sealing ring is arranged between the opening and closing cover and the opening and closing pipe.

[0017] Further, the opening and closing structure comprises an opening and closing pipe fixedly connected to the machine body and an opening and closing plate, the free end of the opening and closing pipe is provided with an opening and closing flange, the opening and closing plate is detachably connected to the opening and closing flange through connecting bolts, and a second sealing ring is arranged between the opening and closing flange and the opening and closing plate.

[0018] Further, the filter part is a filter inner core detachably connected to the outer side wall of the filter pipe. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 It is a three-dimensional structure schematic view of the machine body of the embodiment of the utility model;

[0020] Figure 2 It is a formal structure schematic view of the machine body of the embodiment of the utility model;

[0021] Figure 3 It is a three-dimensional structure schematic view of the small filter device for the gas pipeline of the embodiment of the utility model;

[0022] Figure 4The utility model discloses a cross section structure schematic diagram for small -size filter device for gas pipeline of embodiment of the utility model;

[0023] Figure 5 The utility model discloses a cross section structure schematic diagram for small -size filter device for gas pipeline of another embodiment of the utility model (except filter inner core);

[0024] Figure 6 The utility model discloses a cross section structure schematic diagram for small -size filter device for gas pipeline of another embodiment of the utility model;

[0025] Figure 7 The utility model discloses a cross section structure schematic diagram for small -size filter device for gas pipeline of another embodiment of the utility model;

[0026] Figure 8 The utility model discloses a cross section structure schematic diagram for small -size filter device for gas pipeline of another embodiment of the utility model (except filter inner core);

[0027] In the above drawing:

[0028] 100, machine body, 110, cavity, 111, boss, 112, recess, 113, filter tube, 120, air inlet channel, 130, air outlet channel, 140, pressure test channel, 150, installation channel, 160, open-close pipe,

[0029] 200, connecting pipe, 210, connecting flange, 220, connecting thread, 230, gas pipeline,

[0030] 310, open-close cover, 311, first sealing ring, 320, open-close flange, 321, open-close plate, 322, second sealing ring, 323, connecting bolt,

[0031] 400, pressure gauge,

[0032] 500, filter inner core. DETAILED DESCRIPTION

[0033] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawing, and is only for the convenience of describing the utility model and simplifying the description, and therefore cannot be understood as a limitation on the utility model.

[0034] Referring to Figures 1-8The embodiment provides a small filter device for a gas pipeline, which comprises a body 100, a cavity 110 arranged in the body 100, a filter pipe 113 fixedly arranged in the cavity 110, and a filter component detachably connected with the filter pipe 113, and an opening and closing structure arranged on the body 100 and opposite to the filter pipe 113.

[0035] An air inlet channel 120 and an air outlet channel 130 are arranged on the body 100, the air inlet channel 120 is communicated with the cavity 110, and the air outlet channel 130 is communicated with the filter pipe 113; gas enters the cavity 110 through the air inlet channel 120, then passes through the filter component and the filter pipe 113, and finally is discharged through the air outlet channel 130.

[0036] In the embodiment, the air inlet channel 120 and the air outlet channel 130 of the body 100 are connected with the gas pipeline 230 in use, gas enters the cavity 110 of the body 100 through the air inlet channel 120, then flows to the filter component, and flows through the filter component under the action of pressure because the filter component is connected with the filter pipe 113; the filter component mainly intercepts impurities in the gas, the gas filtered by the filter component is finally discharged to the gas pipeline 230 through the filter pipe 113 and the air outlet channel 130 communicated with the filter pipe 113; when the filter component is replaced, the opening and closing structure opposite to the filter pipe 113 is opened, the body 100 is opened, and the filter component on the filter pipe 113 can be directly exposed, so that the filter component on the filter pipe 113 can be quickly replaced.

[0037] Preferably, as shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 , a boss 111 is arranged in the cavity 110, the filter pipe 113 is fixedly arranged on the boss 111 and one end of the filter pipe 113 is communicated with the inside of the boss 111, the other end of the filter pipe 113 protrudes from the boss 111 and constitutes a connecting part connected with the filter component, and a recess 112 is arranged on the boss 111; the air inlet channel 120 is communicated with the recess 112, and the air outlet channel 130 passes through the boss 111 and is communicated with the filter pipe 113; the filter pipe 113 is fixed on the boss 111 by arranging the boss 111 on the cavity 110, so that the stability and firmness of the filter pipe 113 in the cavity 110 are greatly improved; meanwhile, the recess 112 communicated with the air inlet channel 120 is arranged on the boss 111, the air outlet channel 130 passes through the boss 111 and is communicated with the filter pipe 113, the installation stability of the filter pipe 113 is improved, the utilization of the internal space of the body 100 is optimized, the structure of the whole filter device is more compact, so that the volume of the body 100 is reduced, the space occupied by the filter device in the gas pipeline 230 system is reduced in actual application, the installation flexibility and convenience are improved, and the filter device is suitable for narrow pipeline installation space.

[0038] Preferably, as shown in Figure 1 , Figure 2 , Figure 4 , Figure 5 , Figure 7 and Figure 8 , the cavity 110 is cylindrical, and the recess 112 is circular arc groove; the circular arc groove recess 112 can form a good streamlined channel with the cylindrical cavity 110, reduce the resistance of the gas flowing in it, reduce the pressure loss, and improve the filtering efficiency.

[0039] Preferably, as shown in Figure 3 to Figure 8 , the body 100 is provided with a pressure gauge 400 for testing the pressure inside the cavity 110; the pressure gauge 400 can display the pressure condition inside the filter device in real time, so that the operator can know the working state of the filter device at any time, and by observing the reading change of the pressure gauge 400, it can be judged whether the filter element needs to be replaced, for example, when the value of the pressure gauge 400 rises obviously or fluctuates abnormally, it usually indicates that the filter element may be blocked, and needs to be replaced in time to ensure the filtering effect and normal operation of the equipment; the installation of the pressure gauge 400 helps to find the pressure abnormality in the system in time, prevents safety accidents caused by too high or too low pressure, and enhances the safety of the entire gas conveying system; the operator can carry out targeted maintenance and maintenance according to the reading of the pressure gauge 400, reasonably arrange the filter element replacement time, reduce unnecessary downtime and maintenance cost, and improve the operation efficiency and service life of the equipment.

[0040] Preferably, as shown in Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8 , the body 100 is provided with a pressure testing channel 140 communicating with the cavity 110, and the outer wall of the body 100 is provided with an installation channel 150 communicating with the pressure testing channel 140, and the pressure gauge 400 is sealingly installed in the installation channel 150; the sealingly installed pressure gauge 400 can prevent gas leakage, reduce safety hazards, and ensure the safety and stability of the filter device during use; installing the pressure gauge 400 directly in the installation channel 150 formed in the outer wall of the body 100 makes the structure of the entire filter device more compact and reasonable, without occupying too much additional space, which is conducive to the overall integration and installation of the filter device.

[0041] Preferably, as shown in Figure 1 , Figure 2 , Figure 5 , Figure 7 and Figure 8As shown, the pressure test channel 140 is arranged in the boss 111; arranging the pressure test channel 140 in the boss 111 can more effectively utilize the space inside the body 100, making the structure of the entire filter device more compact; the structural strength of the boss 111 is used to protect the pressure test channel 140, reducing the test error and damage risk caused by pressure change or external force.

[0042] Preferably, as Figure 3 to Figure 8 As shown, the small filter device for the gas pipeline 230 also includes a connecting pipe 200 fixedly connected to the body 100, the connecting pipe 200 being in communication with the gas inlet channel 120 or the gas outlet channel 130, the free end of the connecting pipe 200 being provided with a connecting thread 220 or a connecting flange 210; the body 100 is connected to the gas pipeline 230 through the connecting pipe 200 thereon, and the connecting pipe 200 can be connected to gas pipelines 230 of different specifications through threaded connection or flange connection, improving the versatility and application range of the filter device; of course, the body 100 can also be directly welded to the gas pipeline 230.

[0043] Preferably, as Figures 1-8 As shown, the gas inlet channel 120 and the gas outlet channel 130 are arranged in a straight line or at an angle; in actual application, the distribution mode of the gas inlet channel 120 and the gas outlet channel 130 can be selected according to the specific gas pipeline 230 system layout, space limitation, filtration requirement, and other factors, so that the filter device can better adapt to different working conditions and installation environments and meet diversified use requirements.

[0044] Preferably, as Figures 3 to 5 As shown, the opening and closing structure includes an opening and closing pipe 160 fixedly connected to the body 100 and an opening and closing cover 310, the inner side wall of the opening and closing cover 310 being threadedly connected to the outer side wall of the opening and closing pipe 160, and a first sealing ring 311 being arranged between the opening and closing cover 310 and the opening and closing pipe 160; through the threaded connection of the opening and closing cover 310 and the opening and closing pipe 160, the filter device can be easily opened and closed, the filter components can be easily taken out and replaced, the operation is simple and fast, and the equipment maintenance time and cost are reduced; the arrangement of the first sealing ring 311 can effectively prevent gas leakage at the opening and closing position, ensuring the sealing performance and safety of the filter device during use and avoiding safety hazards and environmental pollution caused by gas leakage.

[0045] Preferably, as Figures 6 to 8As shown, the opening and closing structure includes an opening and closing pipe 160 fixedly connected to the body 100, and an opening and closing plate 321, a free end of the opening and closing pipe 160 is provided with an opening and closing flange 320, the opening and closing plate 321 is detachably connected with the opening and closing flange 320 through a connecting bolt 323, and a second sealing ring 322 is arranged between the opening and closing flange 320 and the opening and closing plate 321; through the detachable connection of the opening and closing flange 320 and the connecting bolt 323, the filter device can be easily opened and closed, the filter part can be easily taken out and replaced, the operation is simple and fast, and the equipment maintenance time and cost are reduced; the arrangement of the second sealing ring 322 can effectively prevent gas leakage at the opening and closing position, ensure the sealing performance and safety of the filter device during use, and avoid safety hazards and environmental pollution caused by gas leakage.

[0046] The flange connection is a reliable mechanical connection mode, which can provide sufficient connection strength, ensure that the opening and closing plate 321 will not be loosened or fallen off due to gas pressure during the operation of the filter device, and ensure the stable operation of the equipment. The opening and closing structure including the opening and closing flange 320 is suitable for the gas pipeline 230 with larger gas flow compared with the opening and closing structure including the opening and closing cover 310.

[0047] Preferably, as shown in Figure 4 and Figure 7 , the filter part is a filter inner core 500 detachably connected to the outer side wall of the filter pipe 113; the filter inner core 500 and the outer side wall of the filter pipe 113 are detachably connected in a sleeving or threaded connection mode, of course, the filter inner core 500 can also be fixedly connected to the outer side wall of the filter pipe 113 in a bonding or other mode; the filter inner core 500 can be directly used in the prior art.

[0048] Specifically, as shown in Figures 1-8 , the above body 100, boss 111, filter pipe 113 and opening and closing pipe 160 are integrally formed, and the integrally formed structure eliminates the weak points that may exist at the connection positions of the parts, so that the entire filter device is more solid and durable, can withstand higher pressure and mechanical stress, and reduces the risk of structural damage during use. The structural strength, sealing performance and manufacturing precision of the gas filter device are significantly improved; the connecting pipe 200 is directly welded to the body 100, the connecting flange 210 is directly welded to the connecting pipe 200, and the opening and closing flange 320 is directly welded to the opening and closing pipe 160, which is firm and reliable.

[0049] Finally, it should be pointed out that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the present application, and all should be covered in the scope of the claims of the present application.

Claims

1. A small filter device for a gas pipeline, characterized in that The utility model provides a filter device, including body, be provided with cavity in the body, fixedly provided with filter tube inside the cavity, the filter tube can detachably connect with filter part, be provided with with the filter tube opposite open and close structure on the body, The body is provided with an air inlet channel and an air outlet channel, the air inlet channel is communicated with the cavity, and the air outlet channel is communicated with the filter tube; the gas enters the cavity through the air inlet channel, then passes through the filter part and the filter tube, and finally is discharged through the air outlet channel.

2. A compact filtering device for gas pipes according to claim 1, characterized in that The cavity is provided with a boss, the filter tube is fixedly arranged on the boss and communicated with the inside of the boss at one end, and the other end protrudes from the boss and constitutes a connecting part connected with the filter part, and the boss is provided with a recess; the air inlet channel is communicated with the recess, and the air outlet channel passes through the boss and is communicated with the filter tube.

3. A compact filtering device for gas pipes according to claim 2, characterised in that, The cavity is cylindrical, and the recess is circular arc groove.

4. A compact filtering device for gas pipes according to claim 2, characterized in that, The body is provided with a pressure gauge for testing the pressure inside the cavity.

5. A compact filtering device for gas pipes according to claim 4, characterised in that, The body is provided with a pressure testing channel communicated with the cavity, and the outer wall of the body is provided with a mounting channel communicated with the pressure testing channel, the pressure gauge is sealingly mounted in the mounting channel, and the pressure testing channel is arranged in the boss.

6. A compact filtering device for gas pipes according to claim 1, characterized in that, The air inlet channel and the air outlet channel are linearly distributed or angularly distributed.

7. A compact filtering device for gas pipes according to claim 1, characterized in that, The utility model also includes a connecting pipe fixedly connected to the body, the connecting pipe is communicated with the air inlet channel or the air outlet channel, and the free end of the connecting pipe is provided with a connecting thread or a connecting flange.

8. A compact filtering device for gas pipes according to claim 1, characterized in that, The open and close structure includes an open and close pipe fixedly connected to the body and an open and close cover, the inner wall of the open and close cover is threadedly connected with the outer wall of the open and close pipe, and a first sealing ring is arranged between the open and close cover and the open and close pipe.

9. A compact filtering device for gas pipes according to claim 1, characterized in that, The open and close structure includes an open and close pipe fixedly connected to the body and an open and close plate, the free end of the open and close pipe is provided with an open and close flange, the open and close plate is detachably connected with the open and close flange through connecting bolts, and a second sealing ring is arranged between the open and close flange and the open and close plate.

10. A compact filtering device for gas pipes according to claim 1, characterized in that, The filter part is a filter inner core detachably connected to the outer wall of the filter tube.

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