Self-cleaning filter for gas pipeline transportation

Abstract

The utility model relates to a kind of self-cleaning filter for gas pipeline transportation, including filter tank and filter core, filter tank is sequentially provided with air inlet cabin, filter cabin and dust storage cabin from top to bottom;Air inlet cabin is equipped with filter tank air inlet, exhaust pipe and water injection pipe;Filter cabin side wall is equipped with filter tank air outlet, filter cabin top is equipped with several filter core upper fixing holes, filter cabin bottom is equipped with several filter core lower fixing holes corresponding with filter core upper fixing hole one to one, air inlet cabin is communicated with filter cabin by filter core upper fixing hole, dust storage cabin is communicated with filter cabin by filter core lower fixing hole;Dust storage cabin is equipped with dust exhaust pipe;Filter core is equipped with multiple, and one filter core is installed between each corresponding filter core upper fixing hole and filter core lower fixing hole.The purpose is to provide a kind of self-cleaning filter for gas pipeline transportation, which can automatically, efficiently remove dust, prolong maintenance cycle, reduce comprehensive cost, and is safe and stable.

Description

Technical Field

[0001] This utility model relates to a filter, and more particularly to a self-cleaning filter for gas pipeline transportation. Background Technology

[0002] In the process of coal mining, in order to ensure the safety of coal mining, it is necessary to extract the gas from the coal seam using vacuum equipment. Since the extracted gas contains moisture and impurities, it will cause wear and damage to the equipment after entering the extraction equipment. Therefore, the gas needs to be filtered first. However, there are no dedicated precision filters for coal mines in my country. This utility model designs a precision filter for gas containing moisture and dust, which can be used in the air intake pipes of coal mine gas extraction equipment and power generation equipment, and can also be used in pipes and equipment where gas filtration is required. Utility Model Content

[0003] To solve the above-mentioned technical problems, this utility model provides a self-cleaning filter for gas pipeline transportation that can automatically and efficiently remove dust, extend maintenance cycles, reduce overall costs, and ensure safe and stable operation.

[0004] This utility model discloses a self-cleaning filter for gas pipeline transportation, comprising a filter tank and filter elements. The filter tank is provided with an air inlet chamber, a filter chamber, and a dust storage chamber from top to bottom. The air inlet chamber is provided with an air inlet, an exhaust pipe, and a water injection pipe. The side wall of the filter chamber is provided with an exhaust port. The top of the filter chamber is provided with several upper fixing holes for the filter elements, and the bottom of the filter chamber is provided with several lower fixing holes for the filter elements that correspond one-to-one with the upper fixing holes. The air inlet chamber and the filter chamber are connected through the upper fixing holes, and the dust storage chamber and the filter chamber are connected through the lower fixing holes. The dust storage chamber is provided with a dust discharge pipe. Multiple filter elements are provided, with one filter element installed between each pair of corresponding upper and lower fixing holes.

[0005] This utility model discloses a self-cleaning filter for gas pipeline transportation, wherein each filter element is provided with a filter element air inlet and a filter element drain outlet. The filter element air inlet is sealed and installed in a fixing hole on the upper part of the filter element, and the filter element drain outlet is sealed and installed in a fixing hole on the lower part of the filter element.

[0006] This utility model discloses a self-cleaning filter for gas pipeline transportation, wherein the exhaust pipe is equipped with an exhaust valve, the water injection pipe is equipped with a water injection valve, and the dust discharge pipe is equipped with a dust discharge valve.

[0007] This utility model discloses a self-cleaning filter for gas pipeline transportation, which further includes a water storage tank equipped with an inlet pipe, a drain pipe and a pressure relief pipe. The two ends of the inlet pipe are respectively connected to the filter chamber and the water storage tank. One end of the drain pipe is connected to the water storage tank and the other end of the drain pipe is connected to the outside. One end of the pressure relief pipe is connected to the top of the water storage tank and the other end of the pressure relief pipe is connected to the outside.

[0008] This utility model discloses a self-cleaning filter for gas pipeline transportation, wherein the inlet pipe is equipped with an inlet valve, the drain pipe is equipped with a drain valve, and the pressure relief pipe is equipped with a pressure relief valve.

[0009] This utility model discloses a self-cleaning filter for gas pipeline transportation, wherein the water storage tank is further provided with a constant pressure pipe equipped with a constant pressure valve, and the two ends of the constant pressure pipe are respectively connected to the filter chamber and the water storage tank.

[0010] This utility model discloses a self-cleaning filter for gas pipeline transportation, wherein both the filter tank and the water storage tank are provided with support bases at the bottom.

[0011] This utility model discloses a self-cleaning filter for gas pipeline transportation, wherein the dust storage chamber side wall is provided with an openable and closable manual slag removal port.

[0012] The difference between this invention and existing technologies lies in its design of the filter tank, which consists of an air inlet chamber, a filter chamber, and a dust storage chamber arranged sequentially from top to bottom. The filter element is detachably and sealed within the filter chamber, connecting the air inlet chamber, the filter chamber, and the dust storage chamber. This ensures that gas can only enter the filter chamber through the filter element, leaving impurities inside the filter element and ultimately causing them to fall into the dust storage chamber. The top of the filter tank also features a water injection pipe for self-cleaning. The dust storage chamber not only has a dust discharge pipe for self-cleaning but also a water tank next to the filter tank for water storage and pressure balancing.

[0013] This utility model discloses a self-cleaning filter for gas pipeline transportation, which has at least the following beneficial effects:

[0014] (1) This self-cleaning filter has two operating modes: gas filtration and self-cleaning, which enhances the degree of automation.

[0015] (2) This self-cleaning filter does not require frequent manual replacement of filter elements and maintenance, which not only simplifies the process and reduces labor costs, but also effectively improves filtration efficiency and reduces safety hazards.

[0016] (3) The filter element can be replaced with a different precision according to actual requirements. The filter element is quick to install, easy to clean and replace. If necessary, the filtered impurities can be manually cleaned, thereby enhancing the adaptability of the filter.

[0017] The present invention will be further described below with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a three-dimensional structural diagram of a self-cleaning filter for gas pipeline transportation according to the present invention;

[0019] Figure 2 This is a front view of a self-cleaning filter for gas pipeline transportation according to the present invention;

[0020] Figure 3 This is a schematic diagram of the filter element in this utility model.

[0021] Figure label:

[0022] 01-Filter tank; 11-Air inlet chamber; 111-Filter tank air inlet; 112-Exhaust pipe; 113-Exhaust valve; 114-Water inlet pipe; 115-Water inlet valve; 12-Filter chamber; 121-Filter tank exhaust port; 122-Upper fixing hole of filter element; 123-Lower fixing hole of filter element; 13-Dust storage chamber; 131-Dust discharge pipe; 132-Dust discharge valve; 133-Manual slag removal port; 14-End cover; 15-Hinge mechanism; 16-Support base; 02-Filter element; 21-Filter element air inlet; 22-Filter element drain port; 23-Upper sealing cover; 24-Lower sealing cover; 03-Water storage tank; 31-Water inlet pipe; 32-Water inlet valve; 33-Drain pipe; 34-Drain valve; 35-Constant pressure pipe; 36-Constant pressure valve; 37-Pressure relief pipe; 38-Pressure relief valve. Detailed Implementation

[0023] like Figure 1 , 2 As shown, this utility model discloses a self-cleaning filter for gas pipeline transportation, comprising a filter tank 01 and filter elements 02. The filter tank 01 is provided with an air inlet chamber 11, a filter chamber 12, and a dust storage chamber 13 from top to bottom. The air inlet chamber 11 is provided with a filter tank air inlet 111, an exhaust pipe 112, and a water injection pipe 114. The side wall of the filter chamber 12 is provided with a filter tank exhaust port 121. The top of the filter chamber 12 is provided with several filter element upper fixing holes 122, and the bottom of the filter chamber 12 is provided with several filter element lower fixing holes 123 corresponding to the filter element upper fixing holes 122. The air inlet chamber 11 and the filter chamber 12 are connected through the filter element upper fixing holes 122, and the dust storage chamber 13 is connected to the filter chamber 12 through the filter element lower fixing holes 123. The dust storage chamber 13 is provided with a dust discharge pipe 131. Multiple filter elements 02 are provided, and one filter element 02 is installed between each pair of corresponding filter element upper fixing holes 122 and filter element lower fixing holes 123. The exhaust pipe 112 is equipped with an exhaust valve 113, the water injection pipe 114 is equipped with a water injection valve 115, and the dust discharge pipe 131 is equipped with a dust discharge valve 132.

[0024] This self-cleaning filter is mainly used for gas filtration in coal mine gas transmission pipelines. It can also be used for filtering other gases, removing moisture and dust carried in the gas. On the one hand, it prevents moisture and dust in the gas from entering the equipment, affecting equipment efficiency or causing moisture corrosion. On the other hand, it prevents impurities such as coal dust from entering vacuum pumps, generators, air compressors or other equipment, avoiding equipment damage.

[0025] The filter canister 01 is preferably cylindrical in shape because it occupies a small area and facilitates the arrangement of the filter element 02. The filter canister 01 is divided into three layers: upper, middle and lower. Since the gas density is relatively low, it usually floats upward, while water vapor and coal dust have higher density and usually sink downward. Therefore, the air intake chamber 11 is arranged in the upper layer, the filter chamber 12 is arranged in the middle layer, and the dust storage chamber 13 is arranged in the lower layer, which facilitates the filtration of water vapor and dust in the gas and also facilitates their discharge from the filter canister 01.

[0026] The air intake chamber 11 is used for gas to enter and exit the filter canister 01. The filter canister 01 is equipped with an openable end cap 14, which is located at the top of the air intake chamber 11. The exhaust pipe 112 is installed on the end cap 14 to facilitate the discharge of gas from the filter canister 01 during water cleaning. The end cap 14 is detachably and sealed to the filter canister 01 by bolts. A hinge mechanism 15 is installed between the two to facilitate the opening and closing of the end cap 14 for the installation and removal of the filter element 02. To open the end cap 14, first unscrew the bolts on the end cap 14, then push the handle of the hinge mechanism 15. At this time, the hinge mechanism 15 rotates relative to the filter canister 01, and the end cap 14 opens with the rotation of the hinge mechanism 15. Similarly, to close, push the handle of the hinge mechanism 15 to rotate the end cap 14 to the top of the canister, and finally fix it. The water injection pipe 114 is also installed on the end cap 14 of the filter canister 01, which facilitates the injection of water into the canister during filter self-cleaning and prevents overflow. The air inlet 111 of the filter canister is located on the side wall of the air intake chamber 11.

[0027] The filter chamber 12 is used to filter the gas entering the chamber. The top and bottom partitions of the filter chamber 12 each have several corresponding filter element 02 fixing holes (i.e., upper filter element fixing holes 122 and lower filter element fixing holes 123), which connect the intake chamber 11, the filter chamber 12, and the dust collection chamber 13. The filter elements 02 are installed in the corresponding upper and lower filter element fixing holes 122 and 123 of the filter chamber 12 to filter the gas flowing into the filter chamber 12 from the intake chamber 11. The filtered water vapor and coal dust, among other impurities, fall into the dust collection chamber 13. Generally, the number of filter element 02 fixing holes is determined by the required filtration accuracy and the tank volume. Higher filtration accuracy and larger tank volume usually require more filter element 02 fixing holes; however, no specific limitation is made here.

[0028] The dust storage chamber 13 is used for storing and discharging impurities such as moisture and coal dust filtered out of the gas. The dust storage chamber 13 can be an integral cavity structure that communicates with all filter elements 02, or it can be a partitioned multi-cavity structure that communicates with several filter elements 02 but is isolated from each other. Dust discharge pipes 131 are installed on the side wall of the dust storage chamber 13. The number of dust discharge pipes 131 is usually determined according to the amount of impurities generated during the filtration process. If a lot of impurities are generated, the number of dust discharge pipes 131 can be appropriately increased to ensure that the impurities can be discharged in time. No special limitation is made here.

[0029] This self-cleaning filter has two operating modes: gas filtration and self-cleaning. When filtering gas, the water injection valve 115, exhaust valve 113, and dust discharge valve 132 are all closed. The gas enters the air intake chamber 11 through the air inlet of the filter canister 01, and then flows into the filter chamber 12 and is filtered by the filter element 02. The filtered gas flows out from the exhaust port 121 of the filter canister. The filtered impurities (dust and water vapor, etc.) remain inside the filter element 02. As the amount of impurities increases, they gradually fall into the dust storage chamber 13.

[0030] Valves are installed at both the air inlet 111 and the air outlet 121 of the filter canister. During self-cleaning, these valves are first closed to stop gas flow into the canister. Then, the water inlet valve 115 and the air outlet valve 113 are opened, and water is injected into the filter canister 01 through the water inlet pipe 114. Water flows from the air inlet chamber 11 through the fixing hole 122 on the filter element into the filter chamber 12. When the filter canister 01 is full of water, the dust outlet valve 132 on the dust outlet pipe 131 is opened to discharge impurities. Debris deposited on the filter screen of the filter element 02 and dust and moisture in the dust storage chamber 13 are discharged as the dust outlet valve 132 is opened. During the discharge process, the dust outlet pipes 131 can be opened individually or all at once, depending on the actual situation, thereby enhancing the self-cleaning effect of the filter. After cleaning, the water inlet valve 115, the air outlet valve 113, and the dust outlet valve 132 are closed, completing one flushing cycle. Finally, the valves at the air inlet 111 and the air outlet 121 of the filter canister are reopened to restore gas filtration.

[0031] The cleaning method for filter element 02 is reverse rinsing, which means that high-pressure water enters from the outside of filter element 02 and then exits from the inside, rinsing the impurities on the filter screen in reverse.

[0032] This self-cleaning filter eliminates the need for frequent manual replacement of filter element 02 and maintenance. It not only simplifies the process and reduces labor costs, but also effectively improves filtration efficiency and reduces safety hazards, making it highly valuable for widespread adoption.

[0033] like Figure 1 , 3 As shown, each filter element 02 is provided with a filter element air inlet 21 and a filter element drain outlet 22. The filter element air inlet 21 is sealed and installed in the filter element upper fixing hole 122, and the filter element drain outlet 22 is sealed and installed in the filter element lower fixing hole 123.

[0034] The filter element 02 adopts a pleated cylindrical design with an upper sealing cover 23 and a lower sealing cover 24 installed at its upper and lower ends, respectively. Both are hollow, meaning they are cylindrical. Thus, the upper sealing cover 23 forms the air inlet 21 of the filter element, and the lower sealing cover 24 forms the drain outlet 22 of the filter element.

[0035] When installing filter element 02, first remove the bolts on the end cap 14 of filter canister 01 and open the end cap 14. Then, insert filter element 02 from top to bottom through the upper fixing hole 122 of filter element until the lower sealing cap 24 (i.e. filter element drain port 22) of filter element 02 is inserted into the lower fixing hole 123 of filter element. At this time, the upper sealing cap 23 (i.e. filter element air inlet 21) of filter element 02 is exactly located at the upper fixing hole 122 of filter element. Finally, close the end cap 14 of filter canister 01 and tighten the bolts to complete the installation of filter element 02.

[0036] When filter element 02 needs maintenance, such as disassembly or replacement, the operation of disassembling or replacing filter element 02 is similar to that of installation. First, open the end cover 14 of filter canister 01, and then take out filter element 02. If filter element 02 needs to be replaced, simply install the new filter element 02 according to the above operation.

[0037] It should be further explained that the filter element 02 adopts a layered arrangement (i.e., a stepped arrangement). The filter elements 02 in the layered arrangement have different lengths. The filter element 02 near the air inlet 111 of the filter canister is shorter, and the filter element 02 far away from the air inlet 111 of the filter canister is longer. This setting can ensure smooth air intake and reduce the height of the filter.

[0038] The filter element 02 has protective nets on both sides of the filter screen to enhance its strength. Both the upper sealing cover 23 and the lower sealing cover 24 of the filter element 02 are fitted with sealing rings to ensure the airtightness of the connection between the filter element 02 and the filter chamber 12. This ensures that gas can only enter through the air inlet 21 of the filter element, thereby ensuring that impurities in the gas remain inside the filter element 02 and fall smoothly into the dust collection chamber 13.

[0039] Filter element 02 can be changed to meet the required precision. Filter element 02 is quick to install, easy to clean and replace, and can be manually cleaned of filtered impurities when necessary, thereby enhancing the adaptability of the filter.

[0040] This self-cleaning filter is also equipped with a control system and various dedicated sensors for gases and pressures (such as methane sensors, flow sensors, pressure sensors, etc.). The control system receives signals transmitted from each sensor and regulates the opening and closing of each valve to switch between self-cleaning and gas filtration states, thereby enhancing the intelligence and automation of the filter and ensuring its continuous and stable operation. Manual operation is also possible when necessary.

[0041] like Figure 1 , 2As shown, the self-cleaning filter for gas pipeline transportation also includes a water storage tank 03 equipped with an inlet pipe 31, a drain pipe 33, and a pressure relief pipe 37. The inlet pipe 31 is connected at both ends to the filter chamber 12 and the water storage tank 03, respectively. One end of the drain pipe 33 is connected to the water storage tank 03, and the other end leads to the outside. One end of the pressure relief pipe 37 is connected to the top of the water storage tank 03, and the other end leads to the outside. An inlet valve 32 is installed on the inlet pipe 31, a drain valve 34 is installed on the drain pipe 33, and a pressure relief valve 38 is installed on the pressure relief pipe 37.

[0042] To enhance the filter's endurance and adaptability, a water storage tank 03 is also provided. The water storage tank 03 is connected to the filter tank 01 via an inlet pipe 31. The two ends of the inlet pipe 31 are connected to the lower end of the side wall of the filter chamber 12 and the upper end of the side wall of the water storage tank 03, respectively. A pressure relief pipe 37 is installed on the top of the water storage tank 03. With this configuration, when the water in the dust storage chamber 13 exceeds its capacity, it enters the filter chamber 12 and then flows into the water storage tank 03 through the inlet pipe 31.

[0043] The water storage tank 03 is also equipped with corresponding sensors (such as a liquid level sensor) to monitor parameters such as the liquid level of the water storage tank 03 in real time. The sensor transmits the detection signal to the control system, which uses this signal to determine whether the water storage tank 03 needs to be drained. If drainage is required, the control system opens the drain valve 34 to drain the water.

[0044] When the filter is in normal filtration mode, the inlet valve 32 and the constant pressure valve 36 are normally open, and the drain valve 34 is closed. When the water level in the storage tank 03 exceeds the range and drainage is required, the inlet valve 32 and the constant pressure valve 36 are closed, the drain valve 34 and the vent valve 38 are opened to drain the water. After drainage is completed, the inlet valve 32 and the constant pressure valve 36 are opened, and the drain valve 34 and the vent valve 38 are closed.

[0045] like Figure 1 , 2 As shown, the water storage tank 03 is also equipped with a constant pressure pipe 35 with a constant pressure valve 36. The two ends of the constant pressure pipe 35 are connected to the filter chamber 12 and the water storage tank 03, respectively.

[0046] The constant pressure pipe 35 is used to balance the pressure between the filter tank 01 and the water storage tank 03, so as to make the pressure of the filter tank 01 and the water storage tank 03 consistent, which facilitates the entry of water into the water storage tank.

[0047] like Figure 1 , 2 As shown, both the filter tank 01 and the water storage tank 03 are equipped with support bases 16 at their bottoms.

[0048] To enhance the stability of the filter and prevent friction damage to the filter tank 01 and the water storage tank 03, support bases 16 are installed at the bottom of both the filter tank 01 and the water storage tank 03. The structure and arrangement of the support bases 16 can be determined according to the usage environment of the filter tank 01, such as trapezoidal or I-shaped support bases 16 evenly distributed around the bottom of the filter tank 01 and the water storage tank 03, etc., without any special limitation here.

[0049] like Figure 1 , 2 As shown, the side wall of the dust storage chamber 13 is provided with multiple manually operated slag removal ports 133 that can be opened and closed.

[0050] The manual slag removal port 133 is another backup method for removing impurities from the dust storage chamber 13. When too many impurities accumulate at the bottom of the dust storage chamber 13 and are difficult to flow out with water, it can be opened for manual cleaning.

[0051] Multiple manual slag removal ports 133 are provided, evenly distributed around the dust storage chamber 13, facilitating slag removal from all directions. When the filter is filtering normally or self-cleaning, the manual slag removal ports 133 are always closed. When manual slag removal is required, the manual slag removal ports 133 are opened for cleaning.

[0052] To enhance the filtration and sewage discharge efficiency of the filter, the dust collection chamber 13 can be configured with an isolated partition structure. Each partition is connected to a certain number of filter elements 02. That is, the filter elements 02 of each partition discharge moisture and impurities into the partition through the filter element sewage discharge port 22. Each partition has a separate dust discharge pipe 131 and a manual slag removal port 133. With this configuration, when a partition accumulates too much impurities, the partition can be discharged or manually removed, thereby improving work efficiency.

[0053] It should be noted that the terms "center", "upper", "lower", "front", "rear", "left", "right", "middle", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0054] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0055] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A self-cleaning filter for gas pipeline transportation, characterized in that: The filter includes a filter canister and a filter element, wherein the filter canister is provided with an air inlet chamber, a filter chamber and a dust storage chamber from top to bottom; The air intake chamber is equipped with a filter canister air inlet, an exhaust pipe, and a water injection pipe; The filter chamber has a filter canister exhaust port on its side wall, a number of filter element upper fixing holes on the top of the filter chamber, and a number of filter element lower fixing holes corresponding one-to-one with the filter element upper fixing holes on the bottom of the filter chamber. The air intake chamber is connected to the filter chamber through the filter element upper fixing holes, and the dust storage chamber is connected to the filter chamber through the filter element lower fixing holes. The dust storage chamber is equipped with a dust exhaust pipe; The filter element is provided in multiple ways, and a filter element is installed between each pair of corresponding upper and lower fixing holes.

2. The self-cleaning filter for gas pipeline transportation according to claim 1, characterized in that: Each of the filter elements is provided with an air inlet and a drain outlet. The air inlet is sealed and installed in a fixing hole on the upper part of the filter element, and the drain outlet is sealed and installed in a fixing hole on the lower part of the filter element.

3. A self-cleaning filter for gas pipeline transportation according to claim 2, characterized in that: The exhaust pipe is equipped with an exhaust valve, the water injection pipe is equipped with a water injection valve, and the dust discharge pipe is equipped with a dust discharge valve.

4. A self-cleaning filter for gas pipeline transportation according to claim 3, characterized in that: It also includes a water storage tank equipped with an inlet pipe, a drain pipe and a pressure relief pipe. The two ends of the inlet pipe are connected to the filter chamber and the water storage tank respectively. One end of the drain pipe is connected to the water storage tank and the other end of the drain pipe leads to the outside. One end of the pressure relief pipe is connected to the top of the water storage tank and the other end of the pressure relief pipe leads to the outside.

5. A self-cleaning filter for gas pipeline transportation according to claim 4, characterized in that: The inlet pipe is equipped with an inlet valve, the outlet pipe is equipped with a outlet valve, and the pressure relief pipe is equipped with a pressure relief valve.

6. A self-cleaning filter for gas pipeline transportation according to claim 5, characterized in that: The water storage tank is also equipped with a constant pressure pipe with a constant pressure valve, and the two ends of the constant pressure pipe are connected to the filter chamber and the water storage tank, respectively.

7. A self-cleaning filter for gas pipeline transportation according to claim 6, characterized in that: Both the filter tank and the water storage tank are equipped with support bases at the bottom.

8. A self-cleaning filter for gas pipeline transportation according to claim 7, characterized in that: The dust storage chamber is equipped with an openable and closable manual slag removal port on its side wall.

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