Water supply pipeline filtering device

Abstract

The application provides a water supply pipeline filtering device, which comprises a front filter and a rear filter, the front filter has a flow channel, the flow channel penetrates the front filter along the length direction of the front filter, the front filter comprises a connecting part and an accelerating part which are connected in sequence, the connecting part is used for being connected with a water pump, the accelerating part is connected with the first end of the water supply pipeline, in a plane which is perpendicular to the length direction of the front filter, the cross-sectional area of the flow channel located at the connecting part is larger than the cross-sectional area of the flow channel located at the accelerating part, the rear filter has a filtering cavity, the rear filter is connected with the second end of the water supply pipeline, the pipe cavity of the water supply pipeline is communicated with the filtering cavity, and a gap is formed between the center line of the water supply pipeline and the center line of the filtering cavity. The water supply pipeline filtering device has the advantages of good removal effect on large-particle impurities and convenient use.

Description

Technical Field

[0001] This invention relates to the field of underground water supply technology in coal mines, and more specifically, to a water supply pipeline filtration device. Background Technology

[0002] When tunneling in a coal mine, the water supply pipeline needs to be extended every day. The purpose of extending the water pipeline is because both the tunneling machine and the belt conveyor need cooling water. The purpose of using cooling water for the tunneling machine is to reduce the oil temperature and motor temperature, while the purpose of using cooling water for the belt conveyor is to ensure the physical and mental health of the workers.

[0003] Currently, the water supply pipelines extending into the mine during the metering process are prone to damage because impurities such as rust and coal sludge cannot be completely removed from the pipelines. Once these impurities enter the equipment, they clog the nozzles and water channels. In related technologies, conventional filtration devices use multiple filter screens for water filtration, but large particles such as rust and coal sludge severely clog these screens, causing the filtration device to become blocked quickly and requiring frequent shutdowns for replacement. If replacement is not done in a timely manner, it can easily lead to major accidents in the mine. Summary of the Invention

[0004] The present invention aims to at least partially solve one of the technical problems in the related art.

[0005] Therefore, embodiments of the present invention provide a water supply pipeline filtration device, which has the advantages of good removal effect on large particulate impurities and convenient use.

[0006] The water supply pipeline filtration device of this invention includes:

[0007] A pre-filter has a flow channel that extends through the pre-filter along its length. The pre-filter includes a connecting portion and an accelerating portion connected in sequence. The connecting portion is used to connect to a water pump, and the accelerating portion is connected to the first end of a water supply pipeline. In a plane orthogonal to the length direction of the pre-filter, the cross-sectional area of ​​the flow channel located at the connecting portion is larger than the cross-sectional area of ​​the flow channel located at the accelerating portion.

[0008] A post-filter has a filter chamber and is connected to the second end of the water supply pipe. The lumen of the water supply pipe is connected to the filter chamber, and there is a gap between the centerline of the water supply pipe and the centerline of the filter chamber.

[0009] The water supply pipeline filtration device of this invention utilizes a pre-filter connected to a water pump. During use, the water discharged from the pump flows through the connection and acceleration section to the water supply pipeline. After passing through the acceleration section, the water flow rate increases, facilitating the flushing of the inner wall of the water supply pipeline. This flushes away large particles of impurities such as rust and coal sludge from the inner wall of the water supply pipeline, allowing the impurities to flow with the water and enter the post-filter. The water flow carrying impurities in the post-filter can be centrifuged to gather the impurities and deposit them at the bottom of the post-filter, thereby achieving the removal of large particles of impurities.

[0010] In some embodiments, the acceleration section includes a first acceleration segment and a second acceleration segment. The first acceleration segment is connected between the second acceleration segment and the connecting portion. The second acceleration segment includes an acceleration protrusion connected to the peripheral wall of the second acceleration segment. In the direction from the first acceleration segment to the second acceleration segment, the cross-sectional area of ​​the acceleration protrusion gradually increases, and there is a gap between the side wall surface of the acceleration protrusion and the inner wall surface of the second acceleration segment.

[0011] In some embodiments, the acceleration protrusion is conical.

[0012] In some embodiments, the end of the second acceleration segment adjacent to the first acceleration segment is frustum-shaped, and in the plane along the length direction of the pre-filter, the cone angle of the end of the second acceleration segment adjacent to the first acceleration segment is less than or equal to the cone angle of the acceleration protrusion.

[0013] In some embodiments, the second acceleration section further includes a connector connected between the acceleration protrusion and the peripheral wall of the second acceleration section, wherein the area of ​​the connector in a plane orthogonal to the length direction of the pre-filter gradually decreases along the length direction of the pre-filter.

[0014] In some embodiments, the post-filter includes a buffer section and a sedimentation section connected in sequence. The peripheral walls of the buffer section and the sedimentation section form the filter cavity. The buffer section is connected to the second end of the water supply pipeline. The sedimentation section is located below the buffer section in the height direction of the post-filter. In the direction from the buffer section to the sedimentation section, the cross-sectional area of ​​the sedimentation section gradually decreases.

[0015] In some embodiments, the post-filter further includes an extension section, a first end of which is connected to the buffer section, and a second end of which is connected to the second end of the water supply pipe. In a plane orthogonal to the extension direction of the pre-filter, the cross-sectional profile of the extension section is equal to the cross-sectional profile of the water supply pipe.

[0016] In some embodiments, the outer peripheral wall of the extension is tangent to the outer peripheral wall of the buffer section.

[0017] In some embodiments, the ratio of the radial dimension of the extension to the height dimension of the buffer section is less than or equal to 1:3.

[0018] In some embodiments, the post-filter further includes a collection section having a collection chamber, the collection section being detachably connected to the bottom of the sedimentation section, and the collection chamber communicating with the filter chamber. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the water supply pipeline filtration device according to an embodiment of the present invention.

[0020] Figure 2 This is a schematic diagram of the structure of the pre-filter of the water supply pipeline filtration device according to an embodiment of the present invention.

[0021] Figure 3 yes Figure 2 The diagram shows a cross-sectional view of AA.

[0022] Figure 4 This is a cross-sectional structural schematic diagram of the pre-filter of the water supply pipeline filtration device according to an embodiment of the present invention.

[0023] Figure 5 This is a schematic diagram of the water supply pipeline filtration device according to an embodiment of the present invention.

[0024] Figure 6 This is a schematic diagram of the water supply pipeline filtration device according to an embodiment of the present invention.

[0025] Figure label:

[0026] Water supply pipeline 100;

[0027] Pre-filter 1; Flow channel 11; Connecting part 12; Accelerating part 13; First accelerating section 131; Second accelerating section 132; Accelerating protrusion 1321; Connecting part 1322;

[0028] Post-filter 2; Filter chamber 21; Buffer section 22; Sedimentation section 23; Extension section 24; Collection section 25. Detailed Implementation

[0029] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention.

[0030] like Figures 1-6 As shown, the water supply pipeline filtration device of this embodiment includes a pre-filter 1 and a post-filter 2.

[0031] The pre-filter 1 has a flow channel 11 that extends through the pre-filter 1 along its length (left-right direction as shown in the figure). The pre-filter 1 includes a connecting portion 12 and an accelerating portion 13 connected in sequence. The connecting portion 12 is used to connect to a water pump (not shown in the figure), and the accelerating portion 13 is connected to the first end of the water supply pipe 100. In a plane orthogonal to the length direction of the pre-filter 1, the cross-sectional area of ​​the flow channel 11 located at the connecting portion 12 is larger than the cross-sectional area of ​​the flow channel 11 located at the accelerating portion 13. The post-filter 2 has a filter chamber 21 that is connected to the second end of the water supply pipe 100, and the cavity of the water supply pipe 100 communicates with the filter chamber 21. There is a gap between the centerline of the water supply pipe 100 and the centerline of the filter chamber 21.

[0032] Specifically, such as Figures 1-4 As shown, the pre-filter 1 and the water supply pipe 100 both extend in the left and right direction. The flow channel 11 of the pre-filter 1 is connected to the cavity of the water supply pipe 100, and the water flow can pass through the pre-filter 1 and the water supply pipe 100 in sequence to the post-filter 2.

[0033] It is understandable that, such as Figures 1-4 As shown, the pre-filter 1 can be directly connected to the water pump, or the pre-filter 1 can be connected to other water supply pipelines 100. Preferably, as the coal mine advances underground, it is necessary to add a new water supply pipeline 100, then the pre-filter 1 can be connected between the new water supply pipeline 100 and the original water supply pipeline 100.

[0034] It should be noted that during transportation, the water supply pipeline 100 is susceptible to corrosion from the underground coal mine environment, leading to rust formation or coal dust accumulation forming coal sludge. Connecting the water supply pipeline 100 to the pre-filter 1 accelerates the water flow within the pre-filter 1, causing the accelerated water to directly impact the inner wall of the water supply pipeline 100. This effectively washes away rust or coal sludge, which then flows towards the post-filter 2.

[0035] like Figure 1 As shown, the post-filter 2 is cylindrical, and there is a gap between the center line of the water supply pipe 100 and the center line of the filter chamber 21, so that the water discharged from the water supply pipe 100 can flow along the wall of the post-filter 2. That is, the water flowing into the post-filter 2 can form a vortex, and larger particles of rust or coal sludge in the water flow can gather at the center of the vortex and gradually deposit at the bottom of the post-filter 2, thereby achieving the function of removing impurities.

[0036] In other words, the water supply pipeline filtration device of this embodiment of the invention utilizes a pre-filter 1 connected to a water pump. During use, the water discharged by the water pump can flow to the water supply pipeline 100 through the connecting part 12 and the accelerating part 13. After passing through the accelerating part 13, the water flow rate increases, which facilitates flushing the inner wall of the water supply pipeline 100, thereby flushing away large particulate impurities such as rust and coal sludge from the inner wall of the water supply pipeline 100. This allows the impurities to flow with the water flow and enter the post-filter 2. The water flow containing impurities in the post-filter 2 can be centrifuged to gather the impurities and deposit them at the bottom of the post-filter 2, thereby achieving the removal of large particulate impurities.

[0037] In some embodiments, the acceleration section 13 includes a first acceleration segment 131 and a second acceleration segment 132. The first acceleration segment 131 is connected between the second acceleration segment 132 and the connecting section 12. The second acceleration segment 132 includes an acceleration protrusion 1321, which is connected to the peripheral wall of the second acceleration segment 132. In the direction from the first acceleration segment 131 to the second acceleration segment 132, the cross-sectional area of ​​the acceleration protrusion 1321 gradually increases, and there is a gap between the side wall surface of the acceleration protrusion 1321 and the inner wall surface of the second acceleration segment 132.

[0038] Specifically, such as Figures 1-4 As shown, the pre-filter 1 is tubular, and the inner diameter of the first acceleration section 131 is smaller than the inner diameter of the connecting part 12, so that the water flow is accelerated after flowing from the connecting part 12 to the first acceleration section 131. The gap between the acceleration protrusion 1321 and the second acceleration section 132 forms a flow channel 11, and the cross-sectional area of ​​the flow channel 11 is smaller than the cross-sectional area of ​​the flow channel 11 in the first acceleration section 131, so that the water flow is accelerated again after flowing from the first acceleration section 131 to the second acceleration section.

[0039] It is understandable that the water flow can be accelerated twice through the acceleration section 13, and due to the arrangement of the acceleration protrusion 1321, the direction of the water flow is changed so that the water flow flows toward the inner wall of the second acceleration section 132, thereby achieving the function of flushing the inner wall surface of the second acceleration section 132, and thus facilitating the removal of large particles such as rust and coal sludge from the inner wall surface of the second acceleration section 132.

[0040] Preferably, such as Figures 1-4 As shown, the acceleration protrusion 1321 is conical. It can be understood that the center line of the acceleration protrusion 1321 coincides with the center lines of the first acceleration section 131 and the second acceleration section 132, that is, the distance from the peripheral wall of the acceleration protrusion 1321 to the inner wall of the second acceleration section 132 is equal, so as to ensure the uniformity of water flow from the first acceleration section 131 to the second acceleration section 132.

[0041] In some embodiments, the end of the second acceleration section 132 adjacent to the first acceleration section 131 is frustoconical. In the plane along the length of the pre-filter 1, the cone angle of the end of the second acceleration section 132 adjacent to the first acceleration section 131 is less than or equal to the cone angle of the acceleration protrusion 1321.

[0042] Specifically, such as Figure 3 As shown, the cone angle of the acceleration protrusion 1321 is α, and the cone angle of the end of the second acceleration segment 132 adjacent to the first acceleration segment 131 is β, then β≤α.

[0043] It is understandable that when β is equal to α, the distance between the accelerating protrusion 1321 and the inner wall surface at the left end of the second accelerating section 132 remains unchanged from left to right; when β is less than α, the distance between the accelerating protrusion 1321 and the inner wall surface at the left end of the second accelerating section 132 gradually decreases from left to right, so as to further improve the acceleration effect of water flow through the second accelerating section 132.

[0044] Preferably, such as Figure 3 and Figure 4 As shown, in the inner wall of the second acceleration section 132, the connecting part 12 between the left end and the right end of the second acceleration section 132 is arc-shaped, so that the inner wall of the second acceleration section 132 is smoother, which facilitates the flow of water, reduces the resistance of the inner wall of the second acceleration section 132 to the water flow, and improves the acceleration effect.

[0045] In some embodiments, the second acceleration section 132 further includes a connector 1322, which is connected between the acceleration protrusion 1321 and the peripheral wall of the second acceleration section 132. In the length direction of the pre-filter 1, the area of ​​the connector 1322 in the plane orthogonal to the length direction of the pre-filter 1 gradually decreases.

[0046] Specifically, such as Figure 3 and Figure 4 As shown, one end of the connector 1322 is connected to the outer peripheral wall of the acceleration protrusion 1321, and the other end of the connector 1322 is connected to the inner peripheral wall of the second acceleration section 132.

[0047] It is understandable that the connector 1322 not only serves to connect the accelerating protrusion 1321 and the second accelerating section 132, but also helps to ensure the stability of the water flow. That is, in a plane orthogonal to the left and right directions, the cross-sectional area of ​​the left end of the connector 1322 gradually decreases from right to left; or, the cross-sectional area of ​​the right end of the connector 1322 gradually decreases from left to right; or, preferably, the cross-section of the connector 1322 gradually decreases at both the left and right ends.

[0048] In other words, the cross-section of the connector 1322 is roughly spindle-shaped, so the water flow encounters little resistance when it flows through the connector 1322. Furthermore, after flowing through the connector 1322, the right end of the connector 1322 also has a flow stabilizing effect, avoiding water flow disturbance and ensuring the uniformity of water flow.

[0049] In some embodiments, the post-filter 2 includes a buffer section 22 and a sedimentation section 23 connected in sequence. The peripheral wall of the buffer section 22 and the peripheral wall of the sedimentation section 23 form a filter cavity 21. The buffer section 22 is connected to the second end of the water supply pipe 100. The sedimentation section 23 is located below the buffer section 22 in the height direction (up and down direction in the figure). In the direction from the buffer section 22 to the sedimentation section 23, the cross-sectional area of ​​the sedimentation section 23 gradually decreases.

[0050] Specifically, such as Figure 1 and Figure 6 As shown, the water flow in the water supply pipeline 100 flows through the buffer section 22 and the sedimentation section 23 in sequence. The sedimentation section 23 is funnel-shaped.

[0051] It is understandable that when water flows into the buffer section 22 in the water supply pipe 100, it can move centrifugally along the inner circumference of the buffer section 22 and form a vortex. As a result, large particles of rust or coal sludge and other impurities in the water flow can easily accumulate in the vortex. As the water flow gradually moves towards the sedimentation section 23, since the sedimentation section 23 is funnel-shaped, the accumulated impurities will be deposited at the bottom of the sedimentation section 23, thereby achieving the function of removing impurities from the water flow.

[0052] It should be noted that the buffer section 22 is also equipped with a water outlet, which is connected to a water pump so that the water with impurities removed can be pumped out of the buffer section 22 to be used as cooling water for the tunneling machine, belt conveyor or spray head.

[0053] In some embodiments, the post-filter 2 further includes an extension section 24, the first end of which is connected to the buffer section 22, and the second end of which is connected to the second end of the water supply pipe 100. In a plane orthogonal to the extension direction of the pre-filter 1, the cross-sectional profile of the extension section 24 is equal to the cross-sectional profile of the water supply pipe 100, so as to ensure that the flow rate of the water in the water supply pipe 100 remains unchanged after flowing to the extension section 24.

[0054] It is understandable that, such as Figure 1 and Figure 6 As shown, the extension section 24 extends away from the buffer section 22, and the extension section 24 can be connected to the water supply pipe 100 by plugging or threading.

[0055] Preferably, such as Figure 5As shown, the outer peripheral wall of the extension section 24 is tangent to the outer peripheral wall of the buffer section 22, so as to facilitate the formation of vortex after the water flows into the buffer section 22.

[0056] Preferably, the ratio of the radial dimension of the extension 24 to the height dimension of the buffer section 22 is less than or equal to 1:3. It is understood that, as... Figure 6 As shown, the radial dimension of the extension section 24 is 'a', and the height dimension of the buffer section 22 is 'b', so a:b ≤ 1:3. This means that the water flowing from the extension section 24 to the buffer section 22 needs to form a vortex within the buffer section 22 to remove impurities. If the height of the buffer section 22 is too low, or the radial dimension of the extension section 24 is too large, it can affect the time it takes for the water to form a vortex in the buffer section 22, easily leading to incomplete removal of impurities from the water.

[0057] In some embodiments, the post-filter 2 further includes a collection section 25, which has a collection chamber. The collection section 25 is detachably connected to the bottom of the sedimentation section 23, and the collection chamber communicates with the filter chamber 21.

[0058] Specifically, such as Figure 1 As shown, the bottom of the sedimentation section 23 is provided with a mounting hole and a thread inside the mounting hole. The upper end of the collection part 25 is provided with an external thread that matches the mounting hole, so that the collection part 25 is threadedly engaged with the mounting hole, thereby facilitating the disassembly of the collection part 25.

[0059] Preferably, a valve is provided in the mounting hole, which can control the opening and closing of the collection chamber and the filter chamber 21.

[0060] Understandably, due to the funnel-shaped design of the sedimentation section 23, the sedimented impurities will accumulate on the inner wall of the sedimentation section 23 and flow along the inner wall of the sedimentation section 23 into the collection chamber. When it is necessary to remove the impurities from the collection section 25, the valve of the mounting hole can be closed, the collection section 25 can be disassembled from the mounting hole, and the impurities in the collection section 25 can be cleaned.

[0061] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to 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 invention.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In this invention, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although the above embodiments have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Any changes, modifications, substitutions and variations made to the above embodiments by those skilled in the art are within the protection scope of the present invention.

Claims

1. A water supply pipeline filtration device, characterized in that, include: A pre-filter has a flow channel that extends through the pre-filter along its length. The pre-filter includes a connecting portion and an accelerating portion connected in sequence. The connecting portion is used to connect to a water pump, and the accelerating portion is connected to the first end of a water supply pipeline. In a plane orthogonal to the length direction of the pre-filter, the cross-sectional area of ​​the flow channel located at the connecting portion is larger than the cross-sectional area of ​​the flow channel located at the accelerating portion. A post-filter element has a filter chamber, the post-filter element is connected to the second end of the water supply pipeline, and the cavity of the water supply pipeline is in communication with the filter chamber, and there is a gap between the center line of the water supply pipeline and the center line of the filter chamber. The acceleration section includes a first acceleration segment and a second acceleration segment. The first acceleration segment is connected between the second acceleration segment and the connecting portion. The second acceleration segment includes an acceleration protrusion connected to the peripheral wall of the second acceleration segment. In the direction from the first acceleration segment to the second acceleration segment, the cross-sectional area of ​​the acceleration protrusion gradually increases. There is a gap between the side wall surface of the acceleration protrusion and the inner wall surface of the second acceleration segment. The acceleration protrusion is conical. The second acceleration section is frustum-shaped at one end adjacent to the first acceleration section. In the plane along the length of the pre-filter, the cone angle of the second acceleration section at one end adjacent to the first acceleration section is smaller than the cone angle of the acceleration protrusion.

2. The water supply pipeline filtration device according to any one of claims 1, characterized in that, The second acceleration section also includes a connector that connects the acceleration protrusion to the peripheral wall of the second acceleration section. In the length direction of the pre-filter, the area of ​​the connector gradually decreases in the plane orthogonal to the length direction of the pre-filter.

3. The water supply pipeline filtration device according to claim 1, characterized in that, The post-filter includes a buffer section and a sedimentation section connected in sequence. The peripheral walls of the buffer section and the sedimentation section form the filter cavity. The buffer section is connected to the second end of the water supply pipeline. The sedimentation section is located below the buffer section in the height direction of the post-filter. In the direction from the buffer section to the sedimentation section, the cross-sectional area of ​​the sedimentation section gradually decreases.

4. The water supply pipeline filtration device according to claim 3, characterized in that, The post-filter also includes an extension section, the first end of which is connected to the buffer section, and the second end of which is connected to the second end of the water supply pipe. In a plane orthogonal to the extension direction of the pre-filter, the cross-sectional profile of the extension section is equal to the cross-sectional profile of the water supply pipe.

5. The water supply pipeline filtration device according to claim 4, characterized in that, The outer peripheral wall of the extension section is tangent to the outer peripheral wall of the buffer section.

6. The water supply pipeline filtration device according to claim 5, characterized in that, The ratio of the radial dimension of the extension segment to the height dimension of the buffer segment is less than or equal to 1:

3.

7. The water supply pipeline filtration device according to claim 5, characterized in that, The post-filter also includes a collection section, which has a collection chamber. The collection section is detachably connected to the bottom of the sedimentation section, and the collection chamber is in communication with the filter chamber.

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