Coal mine wastewater filtering and purification treatment equipment and method

Abstract

This invention relates to the technical field of coal mine wastewater filtration, specifically to a coal mine wastewater filtration and purification equipment and method. It includes a wastewater sedimentation tank with a sludge hopper integrally formed at the bottom. A wastewater inlet is located in the middle of the rear side of the sedimentation tank near the upper end, and multiple locking grooves are located on the front side of the sedimentation tank near the upper end. Locking components are fixedly connected to the outer wall of the front side of the sedimentation tank at positions corresponding to the locking grooves. By assembling the wastewater sedimentation tank with the collection tank, the problems of pre-fixation and large welding workload associated with existing welding connection methods can be avoided. Furthermore, it avoids breakage and loosening caused by stress at the connection points during transportation. This assembly method is simple and convenient, greatly reducing welding work and improving product quality. A detachable wire mesh filter is installed on the collection tank to further filter lighter impurities on the water surface, which can be easily replaced.

Description

Technical Field

[0001] The invention relates to the technical field of coal mine wastewater filtration, and in particular to a coal mine wastewater filtration, purification and treatment device and method. Background Art

[0002] With the continuous growth of China's economy, the demand for water resources continues to increase. The coal industry is a high water-consuming industry. If the large amount of wastewater generated during coal mining cannot be effectively treated and recycled, it will put tremendous pressure on local water resources. Therefore, it is necessary to filter, purify and reuse the coal mine wastewater. At present, the filtration, purification and reuse of coal mine wastewater usually first undergoes primary treatment in a sewage sedimentation tank. This is a common step in coal mine wastewater treatment and is used to remove larger solid particles and suspended matter. In the sewage sedimentation tank, the wastewater flow rate slows down and settles and slides down through the surface of the inclined plate filler, allowing heavier particles to settle to the bottom of the sewage sedimentation tank and separate from the water.

[0003] The existing sewage sedimentation tank has all its components pre-welded, and there are many welding points. During the welding process, the components to be welded need to be pre-fixed, and the required procedures are cumbersome, time-consuming and labor-intensive. After forming a whole, it is transported to the required site. Due to the large overall volume of the sewage sedimentation tank, the length of the pre-welded water collection trough on the upper end of the sewage sedimentation tank is relatively long. During transportation, the partial stress on the welding point between the water collection trough and the sewage sedimentation tank is relatively large, which is prone to a series of problems such as breakage and loosening, affecting product quality; and the upper end of the existing water collection trough is a serrated structure, and the precipitated water directly flows into the water collection trough, and it is impossible to filter impurities in the water to prevent lighter impurities from flowing into the water collection trough together. Summary of the invention

[0004] The present invention provides coal mine wastewater filtering and purification treatment equipment to solve the problems of sewage sedimentation tanks in related technologies.

[0005] The present invention provides a coal mine wastewater filtering and purification treatment device, comprising a sewage sedimentation tank, wherein a sludge discharge hopper is integrally formed at the bottom end of the sewage sedimentation tank; a sewage inlet is provided at the middle part of the rear side of the sewage sedimentation tank near the upper end, a plurality of clamping limit grooves are provided at the front side of the sewage sedimentation tank near the upper end, a clamping piece is fixedly connected at the position corresponding to the clamping limit groove on the outer wall of the front side of the sewage sedimentation tank, and a plurality of supporting brackets are welded at the position corresponding to the clamping limit groove on the inner wall of the rear side of the sewage sedimentation tank; a limiting block with a threaded hole is fixedly connected at the right lower side of the rightmost clamping piece on the outer wall of the front side of the sewage sedimentation tank; a plurality of water collecting tanks are provided, which are respectively assembled on the corresponding clamping limit grooves and the supporting brackets, and are used for For diverting water in a sewage sedimentation tank; a rectangular multi-way pipe, which is commonly connected to a plurality of water collecting tanks, is provided with a plurality of water inlets and a water outlet, and the water inlet on the rectangular multi-way pipe is connected with the water collecting tank, for centrally collecting water in a plurality of water collecting tanks, and a connecting groove is provided on the outer wall of the rectangular multi-way pipe at the connection of the water collecting tank; a plurality of connecting limit mechanisms are provided, which are respectively connected to the clamping parts, for connecting the water collecting tank and the rectangular multi-way pipe to the sewage sedimentation tank; wherein the connecting limit mechanism comprises an L-shaped docking rod inserted into the clamping part, and the upper end of the L-shaped docking rod is connected with a matching clamping block through a tightening assembly, and the matching clamping blocks are clamped on both sides of the water collecting tank.

[0006] In one possible implementation, the water collecting trough is a U-shaped structure, the length of the water collecting trough is longer than the width of the sewage sedimentation tank, rectangular notches are symmetrically opened on the left and right sides of the water collecting trough, a wire filter is threadedly connected to the rectangular notch, the water collecting trough is located on the outside of the sewage sedimentation tank, a fixed threaded rod is penetrated by a thread, and the end of the water collecting trough located on the outside of the sewage sedimentation tank is chamfered.

[0007] In one possible implementation, the clip has an L-shaped structure, a docking hole is provided on the horizontal section of the clip near the left end, the upper width of the docking hole is greater than the lower width, and a docking slot is provided at the top of the vertical section of the clip, the upper width of the docking slot is greater than the width of the lower width.

[0008] In one possible implementation, a guide block is integrally formed at the lower end of the vertical section of the L-shaped docking rod, and the guide block consists of an inverted trapezoidal body in the upper section and a rectangular block in the lower section. The rectangular block in the lower section is provided with a threaded through hole, and a docking long rod is fixedly connected to the lower end of the horizontal section of the L-shaped docking rod near the right side.

[0009] In one possible implementation, the tensioning assembly includes two stepped slide grooves respectively opened on the L-shaped docking rod and the mating clamping block, the two stepped slide grooves are symmetrically arranged, the stepped slide groove is an L-shaped structure, a placement groove is opened on the side away from the two stepped slide grooves, the placement groove is connected to the stepped slide groove, the width of the placement groove is greater than the width of the connection with the stepped slide groove, a connecting slider is slidably connected in the stepped slide groove, and the top ends of the two connecting sliders are commonly connected to an elastic connecting member.

[0010] In one possible implementation, the elastic connecting member includes a fixed block fixedly connected to the top of one of the connecting sliders, the fixed block is provided with a sliding groove, a moving block is slidably connected in the sliding groove of the fixed block, one end of the moving block located on the outside of the fixed block is fixedly connected to the top of the other connecting slider, a receiving groove is provided on a side of the moving block close to the fixed block, and a tensioning spring is fixedly connected between the receiving groove and the sliding groove.

[0011] In a possible implementation, both left and right ends of the support bracket are threadedly connected with threaded fixing nails, and one end of the threaded fixing nail is roughened.

[0012] In a possible implementation, the mating clamping block is an inverted U-shaped structure, and guiding inclined surfaces are provided on opposite sides of two vertical sections at the lower end of the mating clamping block, and elastic rubber blocks are fixedly bonded to opposite sides of the lower section of the mating clamping block.

[0013] In a possible implementation, it also includes a connecting assembly, which is composed of a long threaded rod and a connecting head integrally formed on the long threaded rod, and a docking thread groove is provided on the connecting head.

[0014] In addition, the present invention also provides a method for filtering and purifying coal mine wastewater, which specifically includes the following steps: S1. Coagulation pretreatment: Under the action of a rapid agitator, the generated coal mine wastewater is rapidly mixed with the suspended matter in the raw water by a coagulant to neutralize the negative charge on the surface of the particles, thereby destabilizing the particles to form small flocs.

[0015] S2. Flocculation treatment: Add flocculants to promote small flocs to form larger flocs through adsorption, electrical neutralization and bridging.

[0016] S3. Sedimentation treatment: The flocculated sewage flows into the sewage sedimentation tank from the sewage inlet, and the particles and flocs settle and slide down on the surface of the inclined plate filler; the precipitated water is collected by the water collection tank at the upper end of the sewage sedimentation tank and discharged to the next process through the rectangular multi-way pipe.

[0017] S4. Sludge discharge: Sludge and other impurities generated in the sewage sedimentation tank are collected uniformly through the sludge hopper and discharged regularly.

[0018] The above one or more technical solutions in the embodiments of the present invention have at least one of the following technical effects: 1. A coal mine wastewater filtration and purification treatment equipment provided according to the embodiments of the present invention can avoid the problems of pre-fixation and large welding workload caused by the existing welding method by assembling the sewage sedimentation tank and the water collection tank, and can avoid the problems of breakage and looseness caused by the stress generated at the connection point during transportation. This assembly method is simple and convenient, greatly reduces the amount of welding, and correspondingly improves product quality.

[0019] 2. A coal mine wastewater filtering and purification treatment equipment provided according to an embodiment of the present invention can further increase the firmness of the connected water collection trough and the rectangular multi-way pipe through the provided connection limit mechanism, and fit the connection of the sewage sedimentation tank, while also improving the sealing of the sewage sedimentation tank.

[0020] 3. A coal mine wastewater filtering and purification treatment equipment provided according to an embodiment of the present invention connects multiple water collection tanks and sewage sedimentation tanks separately to form a whole through a set connection component, thereby increasing the overall firmness and connection stability, and has a simple structural design and convenient operation.

[0021] 4. A coal mine wastewater filtering and purification treatment device provided according to an embodiment of the present invention can further filter out lighter impurities on the water surface by setting a detachable wire filter on the water collecting tank, and can be replaced at any time, which is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of a coal mine wastewater filtering and purification treatment device provided by an embodiment of the present invention.

[0023] Figure 2 It is a structural schematic diagram of a sewage sedimentation tank and a sludge lower hopper of a coal mine wastewater filtering and purification treatment equipment provided by an embodiment of the present invention.

[0024] Figure 3 It is a schematic diagram of the structural connection of a water collecting tank and a rectangular multi-way pipe of a coal mine wastewater filtering and purification treatment equipment provided by an embodiment of the present invention.

[0025] Figure 4 It is a structural schematic diagram of a connection limit mechanism of a coal mine wastewater filtering and purification treatment device provided by an embodiment of the present invention.

[0026] Figure 5 It is a partial cross-sectional view of the structure of a connection limit mechanism of a coal mine wastewater filtering and purification treatment device provided by an embodiment of the present invention.

[0027] Figure 6 It is a structural schematic diagram of a stepped chute and a connecting slider of a coal mine wastewater filtering and purification treatment device provided by an embodiment of the present invention.

[0028] Figure 7 It is a structural schematic diagram of a coal mine wastewater filtering and purification treatment equipment provided by an embodiment of the present invention, with a rectangular multi-channel pipe structure hidden.

[0029] Figure 8 It is a cross-sectional view of the connection between an L-shaped docking rod and a clamping piece of a coal mine wastewater filtering and purification treatment device provided by an embodiment of the present invention.

[0030] In the figure: 1. sewage sedimentation tank; 11. sewage inlet; 12. clamping limit groove; 13. clamping piece; 131. docking through hole; 132. docking slot; 14. support frame; 141. threaded fixing nail; 15. limit block; 2. sludge discharge hopper; 3. water collection tank; 31. wire filter; 32. fixed threaded rod; 4. rectangular multi-way pipe; 5. connection limit mechanism; 51. L-shaped docking rod; 511. guide block; 512. docking long rod; 52. tensioning assembly; 521. stepped slide; 522. placement groove; 523. connecting slider; 524. elastic connecting piece; 525. fixed block; 526. moving block; 527. tensioning spring; 53. matching clamping block; 531. elastic rubber block; 6. connecting assembly; 61. threaded long rod; 62. connector; 621. docking thread groove. DETAILED DESCRIPTION

[0031] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below in conjunction with the accompanying drawings. In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways different from those described below, and those skilled in the art can make similar improvements without violating the connotation of the present invention, so the present invention is not limited by the specific embodiments disclosed below.

[0032] See also Figure 2 A coal mine wastewater filtering and purification treatment equipment comprises a sewage sedimentation tank 1, a sludge lower hopper 2 is integrally formed at the bottom of the sewage sedimentation tank 1, a sewage inlet 11 is opened in the middle part of the rear side near the upper end of the sewage sedimentation tank 1, a plurality of clamping limit grooves 12 are opened at the front side near the upper end of the sewage sedimentation tank 1, a clamping piece 13 is fixedly connected to the position of the clamping limit groove 12 on the front side outer wall of the sewage sedimentation tank 1, and a plurality of supporting brackets 14 are welded to the position of the clamping limit groove 12 on the rear side inner wall of the sewage sedimentation tank 1; a limit block 15 with a threaded hole is fixedly connected to the front side outer wall of the sewage sedimentation tank 1 and is located at the lower right of the rightmost clamping piece 13.

[0033] See also Figure 1 and Figure 3, and also includes a plurality of water collecting tanks 3, which are respectively assembled on the corresponding clamping limit grooves 12 and the supporting brackets 14, and are used to divert the water in the sewage sedimentation tank 1; a rectangular multi-way pipe 4 is commonly connected to the plurality of water collecting tanks 3, and a plurality of water inlets and a water outlet are provided on the rectangular multi-way pipe 4, and the water inlet on the rectangular multi-way pipe 4 is connected with the water collecting tank 3, and is used to collect the water in the plurality of water collecting tanks 3, and a connecting groove is opened on the outer wall of the rectangular multi-way pipe 4 at the connection of the water collecting tanks 3.

[0034] See also Figure 1 , Figure 3 , Figure 4 and Figure 7 , and also includes a plurality of connection limit mechanisms 5, which are respectively connected to the clamping parts 13 and are used to connect the water collecting trough 3 and the rectangular multi-way pipe 4 to the sewage sedimentation tank 1.

[0035] The connection limit mechanism 5 includes an L-shaped docking rod 51 inserted into the clamping member 13 , and the upper end of the L-shaped docking rod 51 is connected to a matching clamping block 53 through a tensioning assembly 52 , and the matching clamping block 53 is clamped on both sides of the water collection tank 3 .

[0036] The sewage sedimentation tank 1 and the sludge hopper 2 are integrally molded and cast. A sewage inlet 11 is opened at the rear side of the sewage sedimentation tank 1 and a water pipe connection head is welded. Here, it should be noted that in order to increase the service life of the product, the materials involved are all rust-proof materials; first, the sewage sedimentation tank 1 and the sludge hopper 2 are transported to the work site, such as Figure 2 As shown, the bottom end of the sludge hopper 2 is connected to the existing sewage pipe at the site, which is not shown in the attached drawings. This is the prior art and will not be described here. After flocculation treatment, the coal mine wastewater flows into the sewage sedimentation tank 1 from the sewage inlet 11 for purification. An inclined tube filler is arranged inside the sewage sedimentation tank 1 and above the sludge hopper 2. The main function of the inclined tube filler is to promote sedimentation. By increasing the wetted perimeter of the water-passing section and reducing the hydraulic radius, the inclined tube filler can reduce water turbulence and improve the sedimentation effect, so that suspended matter and flocs accumulate at the bottom of the inclined tube filler and sink into the sludge hopper 2 by gravity, thereby effectively separating mud and water. This is the prior art and is not shown in the attached drawings. During transportation, the sump 3 and the rectangular multi-way pipe 4 can be transported separately, which can not only improve the convenience of transportation, but also reduce the breakage rate of the product.

[0037] One thing to explain here is that a waterproof rubber sleeve is bonded to the outer side of the water collecting trough 3 at the joint between the water collecting trough 3 and the clamping limit groove 12 and the supporting bracket 14. Similarly, a waterproof rubber sleeve is also bonded to the water inlet end of the rectangular multi-way pipe 4 at the joint between the rectangular multi-way pipe 4 and the water collecting trough 3 to enhance the sealing of the connection and avoid water leakage.

[0038] See also Figure 1 , Figure 2and Figure 3 The water collecting tank 3 is a U-shaped structure. The length of the water collecting tank 3 is longer than the width of the sewage sedimentation tank 1. Rectangular notches are symmetrically opened on the left and right sides of the water collecting tank 3. A wire filter 31 is threadedly connected to the rectangular notch. A section of the water collecting tank 3 located outside the sewage sedimentation tank 1 is threadedly connected to a fixed threaded rod 32, and the end of the water collecting tank 3 located outside the sewage sedimentation tank 1 is rounded. The left and right ends of the support frame 14 are threadedly connected to threaded fixing nails 141, and one end of the threaded fixing nails 141 is roughened.

[0039] During assembly, multiple water collection tanks 3 are hoisted and placed on the supporting frame 14 in sequence through existing hoisting equipment, and under the action of external force, the water collection tank 3 is clamped on the supporting frame 14. When the water collection tank 3 is completely clamped on the clamping limit groove 12 and the supporting frame 14, the threaded fixing nail 141 is tightened. The roughened end of the threaded fixing nail 141 is pressed against the outer wall of the water collection tank 3 to increase the friction between the supporting frame 14 and the water collection tank 3 and enhance the firmness of the connection of the water collection tank 3. The water in the sewage sedimentation tank 1 flows into the water collection tank 3 through the wire filter 31. The wire filter 31 can further filter the inflowing water to enhance the filtering effect. Moreover, since the wire filter 31 is threadedly connected to the water collection tank 3, the wire filter 31 can be replaced at any time after the wire filter 31 has been used for a period of time.

[0040] After the water collecting trough 3 is assembled on the sewage sedimentation tank 1, the rectangular multi-way tube 4 is placed in multiple water collecting troughs 3 at the same time, and the rectangular multi-way tube 4 is pushed to move in the direction close to the sewage sedimentation tank 1. The rounded corners set on the water collecting trough 3 facilitate the docking of the rectangular multi-way tube 4. When the rectangular multi-way tube 4 moves along the inner wall of the water collecting trough 3 to the inner side of the sewage sedimentation tank 1, the corresponding connecting groove on the rectangular multi-way tube 4 is at the fixed threaded rod 32. The fixed threaded rod 32 is tightened until one end of the fixed threaded rod 32 is screwed into the connecting groove on the rectangular multi-way tube 4, so as to further fix the rectangular multi-way tube 4.

[0041] See also Figure 2 , Figure 7 and Figure 8 The clamping member 13 is an L-shaped structure. A docking through hole 131 is provided on the horizontal section of the clamping member 13 near the left end. The upper width of the docking through hole 131 is greater than the lower width. A docking slot 132 is provided on the top of the vertical section of the clamping member 13. The upper width of the docking slot 132 is greater than the lower width. A guide block 511 is integrally formed at the lower end of the vertical section of the L-shaped docking rod 51. The guide block 511 is composed of an inverted trapezoidal body of the upper section and a rectangular parallelepiped of the lower section. The rectangular parallelepiped of the lower section is provided with a threaded through hole. A docking long rod 512 is fixedly connected to the lower end of the horizontal section of the L-shaped docking rod 51 near the right side.

[0042] During assembly, first insert the docking long rod 512 into the docking slot 132, and the corresponding lower section of the guide block 511 will be correspondingly inserted into the docking through hole 131. Since the width of the docking through hole 131 and the upper section of the docking slot 132 are both greater than the width of the lower section, it is convenient for the L-shaped docking rod 51 to dock. When the docking long rod 512 is inserted into the lower section of the docking slot 132, the side of the vertical section of the L-shaped docking rod 51 close to the water collecting tank 3 will be close to the outer wall of the water collecting tank 3. At this time, the guide block 511 passes through the docking through hole 131, and the threaded through hole of the lower section of the guide block 511 is located below the docking through hole 131.

[0043] See also Figure 4 , Figure 5 and Figure 6 The tensioning assembly 52 includes two stepped slide grooves 521 respectively provided on the L-shaped docking rod 51 and the matching clamping block 53. The two stepped slide grooves 521 are symmetrically arranged. The stepped slide grooves 521 are of an L-shaped structure. A placement groove 522 is provided on one side away from the two stepped slide grooves 521. The placement groove 522 is connected to the stepped slide groove 521. The width of the placement groove 522 is greater than the width of the connection with the stepped slide groove 521. A connecting slider 523 is slidably connected in the stepped slide groove 521. The two connecting sliders 52 3 are commonly connected with an elastic connecting member 524; the elastic connecting member 524 includes a fixed block 525 fixedly connected to the top of one of the connecting sliders 523, the fixed block 525 is provided with a sliding groove, a moving block 526 is slidably connected in the sliding groove of the fixed block 525, one end of the moving block 526 located on the outer side of the fixed block 525 is fixedly connected to the top of the other connecting slider 523, a receiving groove is provided on a side of the moving block 526 close to the fixed block 525, and a tension spring 527 is fixedly connected between the receiving groove and the sliding groove.

[0044] See also Figure 4 The matching clamping block 53 is an inverted U-shaped structure, and the opposite sides of the two vertical sections of the lower end of the matching clamping block 53 are provided with guiding inclined surfaces, and the opposite sides of the lower section of the matching clamping block 53 are fixedly bonded with elastic rubber blocks 531.

[0045] When the L-shaped docking rod 51 is clamped downward, the matching clamping block 53 will also move downward. The guiding inclined surface at the lower end of the matching clamping block 53 facilitates the matching clamping block 53 to move to the outer wall of the water collecting tank 3. When the L-shaped docking rod 51 and the matching clamping block 53 have not completely moved to the bottom, the matching clamping block 53 and the L-shaped docking rod 51 are respectively close to the inner and outer walls of the sewage sedimentation tank 1, but do not contact. The elastic rubber block 531 is in contact with the outer wall of the water collecting tank 3 at this time. Due to the large friction between the elastic rubber block 531 and the water collecting tank 3, the moving block 526 is moved toward the fixed block 5 under the action of the tension spring 527. When the two ends of the lever 524 are in a state of being moved to the left by the lever 526, the lever 526 is in a state of being moved to the right by the lever 526. When the lever 526 is in a state of being moved to the right by the lever 526, the lever 526 is in a state of being moved to the left by the lever 526.

[0046] The stepped slide 521 is arranged to facilitate replacement of the elastic connector 524 connected to the connecting slider 523. Since the tensioning spring 527 is always in a stretched state, it can be replaced after a period of use to ensure the firmness of the connection between the water collecting trough 3 and the rectangular multi-way pipe 4 by the connecting limiting mechanism 5. The specific operation is as follows: move the connecting slider 523 in the transverse section of the stepped slide 521 along the L track until it is moved into the placement groove 522. The stepped slide 521 will no longer limit the connecting slider 523. The two connecting sliders 523 are simultaneously moved out of the placement groove 522. Similarly, reinstall the new elastic connector 524 in the stepped slide 521 through the connecting slider 523. The elastic connector 524 has a tensioning effect on the L-shaped docking rod 51 and the mating snap-in block 53.

[0047] See also Figure 7 , and also includes a connecting component 6, which consists of a threaded long rod 61 and a connecting head 62 integrally formed on the threaded long rod 61, and a docking thread groove 621 is opened on the connecting head 62.

[0048] When all the connection and limiting mechanisms 5 are assembled, the multiple connection components 6 are connected into a whole in sequence. Specifically, the rightmost threaded long rod 61 is first threaded into the threaded through hole at the lower end of the L-shaped docking rod 51, and then threaded onto the limit block 15. Then the adjacent threaded long rod 61 is threaded into the threaded through hole at the lower end of the corresponding L-shaped docking rod 51, and then threaded into the docking thread groove 621 on the connecting head 62 on the right side. The threaded connections are made in sequence until the multiple threaded long rods 61 and the connecting head 62 are all connected. The connection between the multiple threaded long rods 61 and the connecting head 62 makes the L-shaped docking rod 51 more firmly connected to the clamping member 13. At the same time, the integrity will increase the tightness, and this structure has a certain degree of independence. When one of the threaded long rods 61 is bent under the action of a long time, it can be replaced and adjusted in time.

[0049] In addition, the present invention also provides a method for filtering and purifying coal mine wastewater, which specifically includes the following steps: S1. Coagulation pretreatment: Under the action of a rapid agitator, the generated coal mine wastewater is rapidly mixed with the suspended matter in the raw water by a coagulant to neutralize the negative charge on the surface of the particles, thereby destabilizing the particles to form small flocs.

[0050] S2. Flocculation treatment: Add flocculants to promote small flocs to form larger flocs through adsorption, electrical neutralization and bridging.

[0051] S3. Sedimentation treatment: The flocculated sewage flows into the sewage sedimentation tank 1 from the sewage inlet 11, and the particles and flocs settle and slide down on the surface of the inclined plate filler; the precipitated water is collected by the water collection tank 3 at the upper end of the sewage sedimentation tank 1, and discharged to the next process through the rectangular multi-way pipe 4.

[0052] S4. Sludge discharge: The sludge and other impurities generated in the sewage sedimentation tank 1 are uniformly collected through the sludge hopper 2 and discharged regularly.

[0053] In the embodiments of the present invention, unless otherwise clearly specified and limited, the first feature being "above" or "below" the second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, the first feature being "above", "above" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0054] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "connect", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, an integral connection, or a sliding connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0055] The embodiments of this specific implementation method are all preferred embodiments of the present invention, and are not intended to limit the protection scope of the present invention. Therefore, all equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A coal mine wastewater filtering and purification treatment device, comprising a sewage sedimentation tank (1), wherein a sludge discharge hopper (2) is integrally formed at the bottom of the sewage sedimentation tank (1); characterized in that: A sewage inlet (11) is provided in the middle of the rear side near the upper end of the sewage sedimentation tank (1); a plurality of clamping limit grooves (12) are provided on the front side near the upper end of the sewage sedimentation tank (1); a clamping piece (13) is fixedly connected to the position corresponding to the clamping limit groove (12) on the front side outer wall of the sewage sedimentation tank (1); a plurality of supporting frames (14) are welded to the position corresponding to the clamping limit groove (12) on the rear side inner wall of the sewage sedimentation tank (1); a limit block (15) with a threaded hole is fixedly connected to the front side outer wall of the sewage sedimentation tank (1) and is located at the lower right of the rightmost clamping piece (13); A plurality of water collecting tanks (3) are provided, which are respectively mounted on corresponding clamping limit grooves (12) and support frames (14) and are used to guide water in the sewage sedimentation tank (1); A rectangular multi-way pipe (4) is commonly connected to the plurality of water collecting tanks (3); the rectangular multi-way pipe (4) is provided with a plurality of water inlets and a water outlet; the water inlets on the rectangular multi-way pipe (4) are in communication with the water collecting tank (3) and are used to centrally collect water in the plurality of water collecting tanks (3); a connecting groove is provided on the outer wall of the rectangular multi-way pipe (4) at the connection point of the water collecting tanks (3); A plurality of connection limit mechanisms (5) are provided and are respectively connected to the clamping members (13) and are used to connect the water collecting trough (3) and the rectangular multi-way pipe (4) to the sewage sedimentation tank (1); The connection limiting mechanism (5) comprises an L-shaped docking rod (51) plugged into the clamping member (13); the upper end of the L-shaped docking rod (51) is connected to a matching clamping block (53) via a tensioning assembly (52); and the matching clamping block (53) is clamped on both sides of the water collecting tank (3).

2. A coal mine wastewater filtration and purification treatment equipment according to claim 1, characterized in that: The water collecting trough (3) is a U-shaped structure. The length of the water collecting trough (3) is longer than the width of the sewage sedimentation tank (1). Rectangular notches are symmetrically provided on the left and right sides of the water collecting trough (3). A steel wire filter screen (31) is threadedly connected to the rectangular notch. A section of the water collecting trough (3) located outside the sewage sedimentation tank (1) is threadedly connected to a fixed threaded rod (32). The end of the water collecting trough (3) located outside the sewage sedimentation tank (1) is rounded.

3. The coal mine wastewater filtering and purification treatment equipment according to claim 1 is characterized in that: The clamping piece (13) is an L-shaped structure, a docking through hole (131) is provided on the horizontal section of the clamping piece (13) near the left end, the upper section width of the docking through hole (131) is greater than the lower section width, a docking slot (132) is provided on the top of the vertical section of the clamping piece (13), and the upper section width of the docking slot (132) is greater than the lower section width.

4. A coal mine wastewater filtration and purification treatment equipment according to claim 3, characterized in that: A guide block (511) is integrally formed at the lower end of the vertical section of the L-shaped docking rod (51), and the guide block (511) is composed of an inverted trapezoidal body at the upper section and a rectangular parallelepiped at the lower section, and the rectangular parallelepiped at the lower section is provided with a threaded through hole. A docking long rod (512) is fixedly connected to the lower end of the horizontal section of the L-shaped docking rod (51) near the right side.

5. The coal mine wastewater filtering and purification treatment equipment according to claim 1 is characterized in that: The tensioning assembly (52) comprises two stepped slide grooves (521) respectively provided on the L-shaped docking rod (51) and the matching clamping block (53); the two stepped slide grooves (521) are symmetrically arranged; the stepped slide grooves (521) are of an L-shaped structure; a placement groove (522) is provided on one side away from the two stepped slide grooves (521); the placement groove (522) is connected to the stepped slide groove (521); the width of the placement groove (522) is greater than the width of the connection with the stepped slide groove (521); a connecting slider (523) is slidably connected in the stepped slide groove (521); and the top ends of the two connecting sliders (523) are commonly connected to an elastic connecting piece (524).

6. A coal mine wastewater filtration and purification treatment equipment according to claim 5, characterized in that: The elastic connecting member (524) comprises a fixed block (525) fixedly connected to the top of one of the connecting sliders (523), the fixed block (525) being provided with a sliding groove, a moving block (526) being slidably connected in the sliding groove of the fixed block (525), one end of the moving block (526) being located outside the fixed block (525) being fixedly connected to the top of the other connecting slider (523), a receiving groove being provided on a side of the moving block (526) close to the fixed block (525), and a tensioning spring (527) being fixedly connected between the receiving groove and the sliding groove.

7. The coal mine wastewater filtering and purification treatment equipment according to claim 1 is characterized by: The left and right ends of the support frame (14) are both threadedly connected with threaded fixing nails (141), and one end of the threaded fixing nail (141) is roughened.

8. The coal mine wastewater filtering and purification treatment equipment according to claim 1 is characterized by: The matching clamping block (53) is an inverted U-shaped structure, and the opposite sides of the two vertical sections at the lower end of the matching clamping block (53) are provided with guiding inclined surfaces, and the opposite sides of the lower section of the matching clamping block (53) are fixedly bonded with elastic rubber blocks (531).

9. The coal mine wastewater filtering and purification treatment equipment according to claim 1, characterized in that: The invention also comprises a connection assembly (6), which is composed of a long threaded rod (61) and a connection head (62) integrally formed on the long threaded rod (61), and a butt thread groove (621) is provided on the connection head (62).

10. A method for filtering and purifying coal mine wastewater, which is completed by using a coal mine wastewater filtering and purifying treatment device according to claim 1, and specifically comprises the following steps: S1. Coagulation pretreatment: The generated coal mine wastewater is rapidly mixed with the suspended solids in the raw water by the action of a rapid agitator, neutralizing the negative charge on the particle surface and destabilizing the particles to form small flocs; S2. Flocculation treatment: Add flocculants to promote small flocs to form larger flocs through adsorption, electrical neutralization and bridging; S3. Sedimentation treatment: The flocculated sewage flows into the sewage sedimentation tank (1) from the sewage inlet (11), and the particles and flocs settle and slide down on the surface of the inclined plate filler; the precipitated water is collected by the water collection tank (3) at the upper end of the sewage sedimentation tank (1) and discharged to the next process through the rectangular multi-way pipe (4); S4. Sludge discharge: The sludge impurities generated in the sewage sedimentation tank (1) are uniformly collected through the sludge discharge hopper (2) and discharged regularly.

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