Multi-stage purification self-deashing horizontal pipe sedimentation tank

Abstract

The utility model discloses a multistage purification self-deashing horizontal pipe sedimentation tank which comprises a tank body, the tank body is divided into a primary sedimentation bin, a horizontal pipe sedimentation bin and a final-stage sedimentation bin from a water inlet end to a water outlet end, and a conical dust discharge hopper is arranged at the lower end of each bin body; a water inlet groove is formed in the water inlet side of the upper part of the primary precipitation bin; an upper-stage filtering type guide plate A and a lower-stage filtering type guide plate B are arranged in the middle of the primary precipitation bin; an automatic ash removal inclined plate assembly and a horizontal pipe assembly are arranged in a bin body of the horizontal pipe sedimentation bin, an upper-stage filtering type flow guide plate C and a lower-stage filtering type flow guide plate D are arranged in the middle of the final-stage sedimentation bin, and a filtering type clear water channel is arranged on the water outlet side of the upper portion of the final-stage sedimentation bin. On the other hand, the effect of flushing the mud channel is achieved, sedimentation and accumulation of sludge in the mud channel are effectively avoided, the sedimentation tank can be continuously used, and the cost of replacing and maintaining the mud channel is reduced due to the design of the independent flushing nozzles.

Description

Technical Field

[0001] The utility model relates to the technical field of horizontal tube sedimentation tanks, in particular to a multi-stage purification self-cleaning ash horizontal tube sedimentation tank. Background Technique

[0002] The horizontal tube sedimentation tank separation technology is mainly applied in the sedimentation link of water treatment, and is a new sedimentation technology after the horizontal flow tank, inclined tube / plate sedimentation tank, high-density clarification tank, etc.

[0003] The horizontal tube sedimentation separation technology applies Hazen's "shallow pond theory", places the sedimentation tubes horizontally, with horizontal flow, and the suspended solids settle vertically, having the sedimentation and separation functions in the best state. The vertical end face shape of a single horizontal tube is a rhombus, and a sludge discharge port is provided laterally at the bottom of the tube. When water flows into the rhombus tube, the settled suspended solids will slide out of the sludge discharge port along the side bottom and enter the sludge slide channel separated from the water flow. The suspended solids are separated from the water in time through the horizontal tube, the water goes through the water channel, and the sludge goes through the sludge channel, avoiding the occurrence of suspended solids blocking the pipeline and the phenomenon of alum running, and improving the sedimentation efficiency.

[0004] The sludge channels in the existing horizontal tube sedimentation tank are several grooves arranged side by side. The upper end of the groove drains water, and the lower end drains sludge. The sludge separated from the bottom end of the horizontal tube is discharged with the water flow from each groove.

[0005] However, sludge usually has an adhesive property. After long-term use, the sludge in the sludge channels accumulates and blocks the sludge channels, resulting in a reduction in separation efficiency. Therefore, it often needs to be cleaned, leading to the shutdown of the sedimentation tank and affecting production. Content of the Utility Model

[0006] The purpose of the utility model is to provide a multi-stage purification self-cleaning ash horizontal tube sedimentation tank, which has the ability to flush, avoids sludge channel blockage, is convenient to maintain, and maintains continuous operation of the sedimentation tank.

[0007] The technical solution adopted by the utility model is as follows:

[0008] A multi-stage purification self-cleaning ash horizontal tube sedimentation tank includes a tank body, which is divided into a primary sedimentation chamber, a horizontal tube sedimentation chamber and a final sedimentation chamber from the water inlet end to the water outlet end. A conical dust discharge hopper is provided at the lower end of each chamber body; on the upper water inlet side of the primary sedimentation chamber, a water inlet groove is provided, and an upper-stage filtering deflector A and a lower-stage filtering deflector B are provided in the middle of the primary sedimentation chamber;

[0009] An automatic dust cleaning inclined plate assembly and a horizontal pipe assembly are arranged in the bin body of the horizontal pipe sedimentation bin. The automatic dust cleaning inclined plate assembly is composed of automatic dust cleaning inclined plates of multiple units arranged side by side, and the horizontal pipe assembly is composed of multiple horizontal pipes arranged side by side. The automatic dust cleaning inclined plate assembly is obliquely installed in the horizontal pipe sedimentation bin. The upper surface of the automatic dust cleaning inclined plate assembly is provided with the horizontal pipe assembly in parallel, and the length direction of the horizontal pipe assembly is perpendicular to the length direction of the automatic dust cleaning inclined plate assembly; The automatic dust cleaning inclined plate includes a channel steel inclined plate and an automatic dust cleaning spray pipe arranged in the channel steel inclined plate. A row of nozzles is arranged at intervals from top to bottom on the upper surface of the automatic dust cleaning spray pipe. The spraying direction of the nozzles is downward, and a high-pressure water interface is arranged on the automatic dust cleaning spray pipe;

[0010] The horizontal pipe is a raw water pipeline with a diamond structure. The lower end surface of the horizontal pipe is parallel to the upper end surface of the channel steel inclined plate, and a sludge flow port is arranged at a diamond corner position facing downward of the horizontal pipe;

[0011] A superior filter type guide plate C and an inferior filter type guide plate D are arranged in the middle of the final sedimentation bin. A filtered clear water channel is arranged on the upper water outlet side of the final sedimentation bin.

[0012] Both the superior filter type guide plate A and the inferior filter type guide plate B adopt filter sieve plates. The upper edge of the superior filter type guide plate A is higher than the upper edge of the water inlet tank. The superior filter type guide plate A is obliquely arranged. The upper part of the superior filter type guide plate A faces the water inlet direction, and the lower part faces the water flow direction to conduct downward diversion of the water flow; The inferior filter type guide plate B is arranged in the opposite inclination direction to the superior filter type guide plate A, and the inferior filter type guide plate B conducts upward diversion of the water flow; Both the superior filter type guide plate C and the inferior filter type guide plate D adopt filter sieve plates. The superior filter type guide plate C is symmetrically arranged with the superior filter type guide plate A, and the inferior filter type guide plate D is symmetrically arranged with the inferior filter type guide plate B.

[0013] The above-mentioned filter sieve plate includes a support layer, a sieve passing layer and a sludge sliding layer arranged in sequence. Through holes that are symmetrically communicated are arranged on the support layer and the sludge sliding layer.

[0014] When the channel steel inclined plate and the automatic ash cleaning spray pipe adopt a split structure, the end face of the channel steel inclined plate is in the shape of a square notch, the upper end of the channel steel inclined plate is open, and the upper edges of the left and right groove walls of the opening extend outwards to form a connecting support plate; the lower surface of the horizontal pipe is fixed on the connecting support plate, and the channel steel inclined plates of multiple units are connected in parallel through the connecting support plate; the automatic ash cleaning spray pipe adopts an independent nozzle type flushing pipe with a square cross-section, a flushing pipe with a circular cross-section or a nozzle integrated flushing pipe with a square cross-section. The independent nozzle type flushing pipe with a square cross-section includes a square flushing pipe made of a wholly enclosed hollow pipe and a flushing nozzle installed on the upper surface of the flushing pipe. A high-pressure water interface is arranged at the upper end of the flushing pipe. The upper surface of the flushing pipe is a plane. A row of embedding grooves are arranged on the upper surface of the flushing pipe from top to bottom. The embedding grooves are in the structure of a right-angled trapezoid. The right-angled waist surface is parallel to the upper surface of the flushing pipe, and the inclined waist surface is the bottom surface of the embedding groove; the flushing nozzle is installed in the embedding groove; the water inlet of the flushing nozzle communicates with the inside of the flushing pipe, the water outlet of the flushing nozzle is in the shape of a flat duckbill, and the orientation of the flushing nozzle is the same as the incoming direction of the high-pressure water; the flushing pipe with a circular cross-section is made of a wholly enclosed hollow pipe, a high-pressure water interface is arranged at the upper end of the flushing pipe, and a plurality of spraying holes are arranged on the upper half part of the pipe wall of the circular flushing pipe. The opening direction of the spraying holes is downward along the axial direction of the flushing pipe; the nozzle integrated flushing pipe with a square cross-section includes a closed hollow square flushing pipe sealed by an end cover at the upper end. A high-pressure water interface is arranged at the upper end of the flushing pipe. The end cover adopts a flat plate, and a row of nozzles are arranged on the flat plate at intervals from top to bottom. The spraying direction of the nozzles is downward.

[0015] The distribution density of the flushing nozzles is arranged in a gradually increasing manner from top to bottom; the flushing nozzle includes a base and a top cover. The base is arranged with the rear part higher than the front part. An opening is formed at the middle position of the base as the water inlet. The top cover is covered on the base, and there is a gap between the front end of the top cover and the front end of the base to form a water spraying port. The inside between the top cover and the base is hollow as a flow channel. The water inlet and the water spraying port are communicated through the flow channel. The base is embedded in the embedding groove of the flushing pipe and provided with a sealing gasket. The base and the embedding groove are clamped, connected by bolts or welded; the front end of the top cover extends forward in parallel or extends in an arc for a section to form a positioning edge; the water spraying port is a continuous narrow slit or water outlet holes arranged at equal intervals.

[0016] The automatic ash cleaning inclined plate units are spliced through the connecting support plates to form an integrally inclined mud channel cleaning layer. The high-pressure water interface is located at the upper end of the mud channel, and the spraying directions of the flushing nozzles are inclined downward along the mud channel.

[0017] When the channel steel inclined plate and the automatic dust cleaning nozzle adopt an integrated structure, the automatic dust cleaning inclined plate includes a square flushing trough with an opening at the upper end and a sealing cover plate. The left side of the upper port of the square flushing trough extends outward to form a left mask plate, and a right support plate is provided below the symmetrical position of the left mask plate. Multiple units of automatic dust cleaning inclined plates are spliced ​​side by side by stacking the left mask plate and the right support plate up and down to form an overall inclined mud road cleaning layer; a supporting platform is provided on the left and right inner walls of the square flushing trough, and the sealing cover plate is mounted on two supporting platforms to form an internal hollow water storage chamber. The square flushing trough is provided with a high-pressure water interface corresponding to the water storage chamber, and a row of nozzles are provided on the sealing cover plate from top to bottom, and the spraying direction of the nozzles is inclined downward along the mud road.

[0018] When the channel steel inclined plate and the automatic dust cleaning nozzle adopt an integrated structure, the automatic dust cleaning inclined plate includes a square flushing trough with an opening at the upper end and a sealing cover plate. The right side edge of the upper port of the square flushing trough extends outward and then downward to form an ear groove. Multiple units of automatic dust cleaning inclined plates are spliced ​​side by side by means of the ear groove inserted into the upper end of the left side wall to form an overall inclined mud road cleaning layer; a supporting platform is provided on the left and right inner walls of the square flushing trough, and the sealing cover plate is mounted on two supporting platforms to form an internal hollow water storage chamber. The square flushing trough is provided with a high-pressure water interface corresponding to the water storage chamber, and a row of nozzles are provided on the sealing cover plate from top to bottom, and the spraying direction of the nozzles is inclined downward along the mud road.

[0019] The filter-type clean water channel comprises a clean water tank, a plurality of filter boxes and a plurality of three-way selector valves. The plurality of filter boxes are arranged in a ring shape below the clean water tank, the top of the filter box is connected to the bottom plate of the clean water tank, and the three-way selector valve is arranged on the bottom plate of the clean water channel; the three-way selector valve comprises a main through pipe and a backwash pipe, the lower end of the main through pipe is a filtered water inlet end, the filtered water inlet end is arranged in the filter box, the upper end of the main through pipe is a filtered water outlet end, which is connected to the inside of the clean water tank, the inlet of the backwash pipe is set as a reverse flushing port, and the reverse flushing port is connected to a clean water source; the pipe body of the main through pipe is connected to one end of the backwash pipe, and at the upper edge of the interface between the main through pipe and the backwash pipe A rotating shaft is provided, and a flap is sleeved on the rotating shaft. The flap rotates 0-90 degrees around the rotating shaft. When the flap is located in a position parallel to the cross-section of the main through-tube, that is, the main through-tube where the flap is at a 90 degree position is provided with an inner sleeve stopper, and the lower end of the inner sleeve is slightly higher than the height of the rotating shaft; the filter box has an open upper end, and each surface of the box adopts a filter plate; the flap is positioned at 90 degrees through the lower end of the inner sleeve; when backwashing is not started, the flap is at 0 degrees, the main through-tube is connected, and a filtering pipeline is formed; when backwashing is started, the flap is at 90 degrees, the backwashing pipe and the lower pipe body of the main through-tube are connected, and a backwashing pipeline is formed.

[0020] The recoil pipe comprises a main pipe butt joint pipe and a recoil water source butt joint pipe, the main pipe butt joint pipe and the recoil water source butt joint pipe are sealed and connected via a butt flange, and the main pipe butt joint pipe has a length of 1cm-2cm.

[0021] The described three-way selector valve further includes a flap return spring. One end of the return spring is fixed to the bottom inner wall of the backwash pipe, and the other end is fixed to the flap.

[0022] The utility model has prominent substantive features and remarkable progress compared with the prior art. Specifically, the interior of the utility model is divided into a primary sedimentation chamber, a horizontal pipe sedimentation chamber, and a final sedimentation chamber according to the distribution of the conical dust removal hopper arranged below. Among them, the primary sedimentation chamber mainly preliminarily sediments the sewage entering the pool body, and at the same time, it is diverted and filtered by the filter type diversion plate. After that, it enters the horizontal pipe sedimentation chamber. The utility model changes the traditional mud channel form and designs it as a mud channel formed by splicing flushing pipes. A number of flushing nozzles are installed on the upper surface of the flushing pipe, and high-pressure water is used to flush the mud channel in real time, effectively avoiding the accumulation of sludge. At the same time, the flushing water also serves as a carrier for the sludge, carrying the sludge to flow downward and flowing out of the mud channel, effectively solving the problem that the mud channel in the horizontal pipe sedimentation tank is prone to blockage, enabling the horizontal pipe sedimentation tank to work continuously without interruption and improving the separation efficiency.

[0023] Furthermore, the flushing nozzles and the flushing pipes are installed in a detachable and embedded manner. When the nozzles are damaged, they can be replaced separately, with low maintenance costs, greatly reducing the use investment and having good economic promotion value.

[0024] After the sedimentation treatment in the horizontal pipe sedimentation chamber, the water quality has been greatly improved at this time. The sediment and sediment in the sewage are further sedimented and purified. Finally, the relatively clear sewage flows into the final sedimentation chamber for the final purification sedimentation treatment. Finally, the relatively clear water flows out of the pool body through the filter type clear water channel in the final sedimentation chamber. Description of the Drawings

[0025] Figure 1 is the front view of the utility model;

[0026] Figure 2 is the side view of the utility model;

[0027] Figure 3 is the top view of the utility model;

[0028] Figure 4 is the structural schematic diagram of the automatic dust cleaning inclined plate unit and the horizontal pipe unit of the utility model;

[0029] Figure 5 is the first structural schematic diagram of the flushing pipe of the automatic dust cleaning inclined plate in the utility model;

[0030] Figure 6 is the cross-sectional structural schematic diagram of Embodiment 1 of the flushing nozzle in the utility model;

[0031] Figure 7 It is a schematic cross-sectional structure diagram of Embodiment 2 of the flushing nozzle in the present utility model;

[0032] Figure 8 It is the second schematic structure diagram of the automatic dust cleaning inclined plate in the present utility model;

[0033] Figure 9 It is the third schematic structure diagram of the automatic dust cleaning inclined plate in the present utility model;

[0034] Figure 10 It is the fourth schematic structure diagram of the automatic dust cleaning inclined plate in the present utility model;

[0035] Figure 11 It is the fifth schematic structure diagram of the automatic dust cleaning inclined plate in the present utility model;

[0036] Figure 12 It is the layout top view of Installation Embodiment 1 of the present utility model;

[0037] Figure 13 It is the layout top view of Installation Embodiment 2 of the present utility model;

[0038] Figure 14 It is the first schematic structure diagram of the horizontal pipe in the present utility model;

[0039] Figure 15 It is the second schematic structure diagram of the horizontal pipe in the present utility model;

[0040] Figure 16 It is the schematic structure diagram of the filter sieve hole plate in the present utility model;

[0041] Figure 17 It is the schematic structure diagram of the filter type clear water channel in the present utility model;

[0042] Figure 18 It is the schematic structure diagram of the three-way selector valve in the present utility model.

[0043] In the figure: 1. Pool body; 2. Water inlet trough; 3. Horizontal pipe; 4. Flushing nozzle; 31. Sludge outlet; 20. Channel steel inclined plate; 201. Connecting support plate; 6. Flushing pipe; 61. High-pressure water interface; 7. Embedded groove; 11. Clear water trough; 12. Filter box; 13. Three-way selector valve; 131. Main through pipe; 132. Backwashing pipe; 133. Docking flange; 134. Rotating shaft; 135. Flap; 136. Inner sleeve; 137. Rebound; 138. Main through pipe docking pipe; 139. Backwashing water source docking pipe; 14. Conical dust discharge hopper; 15. Filter type clear water channel; 16. Support layer; 17. Sifting layer; 18. Sliding mud layer; 19. Through hole; 41. Water inlet of the washing nozzle; 42. Base; 43. Top cover; 44. Water spraying port; 45. Positioning edge; 46. Sealing gasket; Specific embodiments

[0044] As Figure 1 、 Figure 2 And Figure 3 shown, the utility model includes a pool body 1, which is divided into a primary sedimentation bin X, a horizontal pipe sedimentation bin Y and a final sedimentation bin Z from the water inlet end to the water outlet end. A conical dust discharge hopper 14 is provided at the lower end of each bin body; an inlet water trough 2 is provided on the upper water inlet side of the primary sedimentation bin X, and a superior filtering guide plate A and an inferior filtering guide plate B are provided in the middle of the primary sedimentation bin X. Both the superior filtering guide plate A and the inferior filtering guide plate B adopt filtering sieve plates. The upper edge of the superior filtering guide plate A is higher than the upper edge of the inlet water trough 2. The superior filtering guide plate A is inclined, with its upper part facing the water inlet direction and its lower part facing the water flow direction to conduct downward diversion of the water flow; the inferior filtering guide plate B is arranged in the opposite inclined direction to the superior filtering guide plate A to conduct upward diversion of the water flow.

[0045] An automatic dust cleaning inclined plate assembly and a horizontal pipe assembly are arranged in the bin body of the horizontal pipe sedimentation bin Y. The automatic dust cleaning inclined plate assembly is composed of multiple units of automatic dust cleaning inclined plates arranged side by side, and the horizontal pipe assembly is composed of multiple horizontal pipes 3 arranged side by side. The automatic dust cleaning inclined plate assembly is obliquely installed in the horizontal pipe sedimentation bin Y. The upper surface of the automatic dust cleaning inclined plate assembly is parallel to the horizontal pipe assembly, and the length direction of the horizontal pipe assembly is perpendicular to the length direction of the automatic dust cleaning inclined plate assembly. The horizontal pipe 3 is a raw water pipeline with a diamond structure. The lower end surface of the horizontal pipe 3 is parallel to the upper end surface of the channel steel inclined plate 20, and a sludge discharge port 31 is opened at a diamond corner position facing downward of the horizontal pipe 3; the automatic dust cleaning inclined plate units are spliced through connecting support plates 201 to form an integrally inclined mud channel cleaning layer. The high-pressure water interface 61 is located at the upper end of the mud channel, and the spraying directions of the respective flushing nozzles 4 are inclined downward along the mud channel.

[0046] The automatic dust cleaning inclined plate includes a channel steel inclined plate 20 and an automatic dust cleaning spray pipe arranged in the channel steel inclined plate 20. A row of nozzles is arranged at intervals from top to bottom on the upper surface of the automatic dust cleaning spray pipe, and the spraying direction of the nozzles faces downward. A high-pressure water interface is arranged on the automatic dust cleaning spray pipe.

[0047] When the channel steel inclined plate and the automatic ash cleaning spray pipe adopt a split structure, the end face of the channel steel inclined plate is in the shape of a square notch, the upper end of the channel steel inclined plate is open, and the upper edges of the left and right groove walls of the opening extend outwards to form a connecting support plate; the lower surface of the horizontal pipe is fixed on the connecting support plate, and the channel steel inclined plates of multiple units are connected side by side through the connecting support plate; the automatic ash cleaning spray pipe adopts an independent nozzle type flushing pipe with a square cross-section, a flushing pipe with a circular cross-section, or a nozzle integrated flushing pipe with a square cross-section. The independent nozzle type flushing pipe with a square cross-section includes a square flushing pipe made of an integrally sealed hollow pipe and a flushing nozzle installed on the upper surface of the flushing pipe. A high-pressure water interface is arranged at the upper end of the flushing pipe. The upper surface of the flushing pipe is a plane, and a row of embedding grooves are arranged on the upper surface of the flushing pipe from top to bottom. The embedding grooves are in a right-angled trapezoid structure, the right-angled waist surface is parallel to the upper surface of the flushing pipe, and the inclined waist surface is the bottom surface of the embedding groove; the flushing nozzle is installed in the embedding groove; the water inlet of the flushing nozzle communicates with the inside of the flushing pipe, the water outlet of the flushing nozzle is in a flat duckbill shape, and the orientation of the flushing nozzle is the same as the incoming direction of the high-pressure water; the flushing pipe with a circular cross-section is made of an integrally sealed hollow pipe, a high-pressure water interface is arranged at the upper end of the flushing pipe, and a plurality of spray holes are arranged on the upper half of the pipe wall of the circular flushing pipe, and the opening direction of the spray holes is downward along the axis of the flushing pipe; the nozzle integrated flushing pipe with a square cross-section includes a closed hollow square flushing pipe sealed by an end cover at the upper end, a high-pressure water interface is arranged at the upper end of the flushing pipe, the end cover is a flat plate, and a row of nozzles are arranged on the flat plate at intervals from top to bottom, and the spraying direction of the nozzles is downward.

[0048] The distribution density of the flushing nozzles is arranged in a gradually increasing manner from top to bottom; the flushing nozzle includes a base and a top cover. The base is set with the rear part higher than the front part. An opening is arranged at the middle position of the base as the water inlet. The top cover is covered on the base, and there is a gap between the front end of the top cover and the front end of the base to form a water spraying port. The inside between the top cover and the base is hollow as a flow channel. The water inlet and the water spraying port are communicated through the flow channel. The base is embedded in the embedding groove of the flushing pipe and a sealing gasket is arranged. The base and the embedding groove are clamped or connected by bolts or welded; the front end of the top cover extends forward in parallel or extends in an arc for a section to form a positioning edge; the water spraying port is a continuous narrow slit or water outlet holes arranged at equal intervals.

[0049] The automatic ash cleaning inclined plate units are spliced through the connecting support plates to form an integrally inclined mud channel cleaning layer. The high-pressure water interface is located at the upper end of the mud channel, and the spraying directions of the flushing nozzles are inclined downward along the mud channel.

[0050] When the channel steel inclined plate and the automatic ash cleaning spray pipe adopt an integral structure, the automatic ash cleaning inclined plate includes a square flushing tank with an open upper end and a sealing cover plate. The left side edge of the upper port of the square flushing tank extends outward to form a left masking plate, and a right supporting plate is arranged below the symmetric position of the left masking plate. The automatic ash cleaning inclined plates of multiple units are spliced side by side in an up-and-down overlapping manner through the left masking plate and the right supporting plate to form an integrally inclined mud channel cleaning layer; a supporting platform is arranged on the left and right inner walls of the square flushing tank, and the sealing cover plate is erected on the two supporting platforms, thus forming a water storage cavity with a hollow interior. The square flushing tank is provided with a high-pressure water interface corresponding to the water storage cavity, and a row of nozzles are arranged on the sealing cover plate at intervals from top to bottom. The spraying direction of the nozzles is inclined downward along the mud channel.

[0051] When the channel steel inclined plate and the automatic ash cleaning spray pipe adopt an integral structure, the automatic ash cleaning inclined plate includes a square flushing tank with an open upper end and a sealing cover plate. The right side edge of the upper port of the square flushing tank extends outward and then downward to form an ear groove. The automatic ash cleaning inclined plates of multiple units are spliced side by side by inserting the upper ends of the left side walls into the ear grooves to form an integrally inclined mud channel cleaning layer; a supporting platform is arranged on the left and right inner walls of the square flushing tank, and the sealing cover plate is erected on the two supporting platforms, thus forming a water storage cavity with a hollow interior. The square flushing tank is provided with a high-pressure water interface corresponding to the water storage cavity, and a row of nozzles are arranged on the sealing cover plate at intervals from top to bottom. The spraying direction of the nozzles is inclined downward along the mud channel.

[0052] The end face of the channel steel inclined plate 20 is in the shape of a square notch. The upper end of the channel steel inclined plate 20 is open, and the upper edges of the left and right groove walls of the opening extend outward to form a connecting support plate 201. The lower surface of the horizontal pipe 3 is fixed on the connecting support plate 201, and the channel steel inclined plates 20 of multiple units are connected side by side through the connecting support plate 201. The automatic ash cleaning spray pipe includes a flushing pipe 6 made of an integrally sealed hollow pipe and a flushing nozzle 4 installed on the upper surface of the flushing pipe 6. A high-pressure water interface 61 is arranged at the upper end of the flushing pipe 6. The structure of the flushing pipe 6 matches the groove structure of the channel steel inclined plate 20. The flushing pipe 6 is recessed into the groove of the channel steel inclined plate 20. The embedded groove 7 on the flushing pipe 6 is in the structure of a right-angled trapezoid. The right-angled waist surface is parallel to the upper surface of the flushing pipe 6, and the inclined waist surface is the bottom surface of the embedded groove 7. The upper surface of the flushing pipe 6 is a plane, and a row of embedded grooves 7 are arranged on the upper surface of the flushing pipe 6 from top to bottom. The flushing nozzle 4 is installed in the embedded groove 7.

[0053] The water inlet 41 of the flushing nozzle 4 communicates with the inside of the flushing pipe 6. The water spraying orifice 44 of the flushing nozzle 4 is in the shape of a flat duckbill, and the orientation of the flushing nozzle 4 is the same as the incoming direction of the high-pressure water. The distribution density of the flushing nozzles 4 is arranged in a gradually increasing manner from top to bottom. The flushing nozzle 4 includes a base 42 and a top cover 43. The base 42 is arranged with the rear higher than the front. The middle position of the base 42 is open as the water inlet 41. The top cover 43 is covered on the base 42, and there is a gap between the front end of the top cover 43 and the front end of the base 42 to form the water spraying orifice 44. The interior between the top cover 43 and the base 42 is hollow as a flow channel. The water inlet 41 and the water spraying orifice 44 are communicated through the flow channel. The base 42 is embedded in the slot 7 of the flushing pipe 6 and a sealing gasket 46 is provided. The base 42 is clamped or connected by bolts or welded to the slot 7. The front end of the top cover 43 extends forward in parallel or extends in an arc for a section to form a positioning edge 45. The water spraying orifice 44 is a continuous narrow slit or water outlet holes arranged at equal intervals.

[0054] In the middle of the last-stage sedimentation bin Z, there are a upper-stage filtering guide plate C and a lower-stage filtering guide plate D. On the upper water outlet side of the last-stage sedimentation bin Z, there is a filtering clear water channel 15. Both the upper-stage filtering guide plate C and the lower-stage filtering guide plate D adopt filtering sieve plates. The upper-stage filtering guide plate C is symmetrically arranged with the upper-stage filtering guide plate A, and the lower-stage filtering guide plate D is symmetrically arranged with the lower-stage filtering guide plate B. The above-mentioned filtering sieve plate includes a support layer 16, a sieve layer 17 and a sludge sliding layer 18 arranged in sequence. Symmetrically communicating through holes 19 are provided on the support layer 16 and the sludge sliding layer 18.

[0055] When the channel steel inclined plate 20 and the automatic ash cleaning spray pipe adopt a split structure, the end face of the channel steel inclined plate 20 is in the shape of a square notch, the upper end of the channel steel inclined plate 20 is open, and the upper edges of the left and right groove walls of the opening extend outwards to form a connecting support plate 201; the lower part of the horizontal pipe is fixed on the connecting support plate 201, and the channel steel inclined plates 20 of multiple units are connected side by side through the connecting support plate 201; the automatic ash cleaning spray pipe adopts an independent nozzle type flushing pipe with a square cross-section, a flushing pipe with a circular cross-section or a nozzle integrated flushing pipe with a square cross-section. The independent nozzle type flushing pipe with a square cross-section includes a square flushing pipe 6a made of a wholly enclosed hollow pipe and a flushing nozzle 4 installed on the upper surface of the flushing pipe 6a. A high-pressure water interface 61 is arranged at the upper end of the flushing pipe 6a. The upper surface of the flushing pipe 6a is a plane, and a row of embedding grooves 7 are arranged on the upper surface of the flushing pipe 6a from top to bottom. The embedding grooves 7 are in the structure of a right-angled trapezoid, the right-angled waist surface is parallel to the upper surface of the flushing pipe 6a, and the inclined waist surface is the bottom surface of the embedding groove 7; the flushing nozzle 4 is installed in the embedding groove 7; the water inlet 41 of the flushing nozzle 4 communicates with the inside of the flushing pipe 6a, the water outlet 44 of the flushing nozzle 4 is in the shape of a flat duckbill, and the orientation of the flushing nozzle 4 is the same as the incoming direction of the high-pressure water; the flushing pipe with a circular cross-section adopts a circular flushing pipe 6b made of a wholly enclosed hollow pipe. A high-pressure water interface 61 is arranged at the upper end of the flushing pipe 6b, and a plurality of spraying holes 62 are arranged on the upper half part of the pipe wall of the circular flushing pipe 6b. The opening direction of the spraying holes 62 is downward along the axial direction of the flushing pipe 6b; the nozzle integrated flushing pipe with a square cross-section includes a square flushing pipe 6c with a closed hollow upper end sealed by an end cover. A high-pressure water interface 61 is arranged at the upper end of the flushing pipe 6c. The end cover 63 adopts a flat plate, and a row of nozzles 64 are arranged at intervals from top to bottom on the flat plate. The spraying direction of the nozzles 64 is downward.

[0056] The distribution density of the flushing nozzles 4 is arranged in a gradually increasing manner from top to bottom; the flushing nozzle 4 includes a base 42 and a top cover 43. The base 42 is arranged with the rear part higher than the front part, and the middle position of the base 42 is open as the water inlet 41. The top cover 43 is covered on the base 42, and there is a gap between the front end of the top cover 43 and the front end of the base 42 to form a water spraying port 44. The inside between the top cover 43 and the base 42 is hollow as a flow channel. The water inlet 41 and the water spraying port 44 are communicated through the flow channel. The base 42 is embedded in the embedding groove 7 of the flushing pipe 6 and a sealing gasket 46 is arranged. The base 42 and the embedding groove 7 are clamped, connected by bolts or welded; the front end of the top cover 43 extends forward parallelly or arc-shapedly for a section to form a positioning edge 45; the water spraying port 44 is a continuous narrow slit or water outlet holes arranged at equal intervals.

[0057] The automatic dust cleaning inclined plate unit forms an integrally inclined mud channel cleaning layer through splicing with the connecting support plate 201. The high-pressure water interface 61 is located at the upper end of the mud channel, and the spraying directions of the respective flushing nozzles 4 are inclined downward along the mud channel.

[0058] When the channel steel inclined plate 20 and the automatic dust cleaning spray pipe adopt an integral structure, the automatic dust cleaning inclined plate includes a square flushing groove 201 with an open upper end and a sealing cover plate 202. The left side edge of the upper port of the square flushing groove 201 extends outward to form a left masking plate 203, and a right supporting plate 204 is provided below the symmetric position of the left masking plate 203. The automatic dust cleaning inclined plates of multiple units are spliced side by side in an up-and-down overlapping manner through the left masking plate 203 and the right supporting plate 204 to form an integrally inclined mud channel cleaning layer; a supporting platform 205 is provided on the left and right inner walls of the square flushing groove 201, and the sealing cover plate 202 is erected on the two supporting platforms 205, thus forming a water storage cavity with a hollow interior. The square flushing groove 201 is provided with a high-pressure water interface 61 corresponding to the water storage cavity, and a row of nozzles 64 are arranged at intervals from top to bottom on the sealing cover plate 202, and the spraying directions of the nozzles are inclined downward along the mud channel.

[0059] When the channel steel inclined plate 20 and the automatic dust cleaning spray pipe adopt an integral structure, the automatic dust cleaning inclined plate includes a square flushing groove 201 with an open upper end and a sealing cover plate 202. The right side edge of the upper port of the square flushing groove 201 extends outward and then downward to form an ear groove 206. The automatic dust cleaning inclined plates of multiple units are spliced side by side by fitting the upper ends of the left side walls into the ear grooves 206 to form an integrally inclined mud channel cleaning layer; a supporting platform 205 is provided on the left and right inner walls of the square flushing groove 201, and the sealing cover plate 202 is erected on the two supporting platforms 205, thus forming a water storage cavity with a hollow interior. The square flushing groove 201 is provided with a high-pressure water interface 61 corresponding to the water storage cavity, and a row of nozzles 64 are arranged at intervals from top to bottom on the sealing cover plate 202, and the spraying directions of the nozzles are inclined downward along the mud channel.

[0060] The filtered clean water channel 15 includes a clean water tank 11, a plurality of filter boxes 12 and a plurality of three-way selector valves 13. The plurality of filter boxes 12 are arranged in a ring below the clean water tank 11. The top of the filter box 12 is connected to the bottom plate of the clean water tank 11. The three-way selector valve 13 is arranged on the bottom plate of the clean water channel; the three-way selector valve 13 includes a main through pipe 131 and a backwash pipe 132. The lower end of the main through pipe 131 is a filtered water inlet end, which is arranged in the filter box 12. The upper end of the main through pipe 131 is a filtered water outlet end, which is connected to the inside of the clean water tank 11. The inlet of the backwash pipe 132 is set as a backwash port, and the backwash port is connected to a clean water source. The body of the main through pipe 131 is connected to one end of the backwash pipe 132. A turntable is provided at the upper edge of the interface between the main through pipe 131 and the backwash pipe 132. The shaft 134 is provided with a flap 135, and the flap 135 rotates 0-90 degrees around the shaft 134. When the flap 135 is located in a position parallel to the cross section of the main through-tube 131, that is, when the flap 135 is at a 90 degree position, an inner sleeve 136 stopper is provided inside the main through-tube 131, and the lower end of the inner sleeve 136 is slightly higher than the height of the shaft 134. The filter box 12 has an open upper end, and each surface of the box adopts a filter plate. The flap 135 is positioned at 90 degrees by the lower end of the inner sleeve 136. When the backwash is not started, the flap 135 is at 0 degrees, the main through-tube 131 is connected, and a filtering pipeline is formed. When the backwash is started, the flap 135 is at 90 degrees, and the backwash pipe 132 and the lower pipe body of the main through-tube 131 are connected to form a backwash pipe 6.

[0061] The backwash pipe 132 includes a main pipe connecting pipe 138 and a backwash water source connecting pipe 139. The main pipe connecting pipe 138 and the backwash water source connecting pipe 139 are sealed and connected via a docking flange 133. The main pipe connecting pipe 138 is 1 cm-2 cm long.

[0062] The three-way selector valve 13 further includes a flap return spring 137 , one end of the return spring 137 is fixed to the bottom of the inner wall of the recoil pipe 132 , and the other end is fixed to the flap 135 .

[0063] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0064] like Figure 1 , Figure 2 and Figure 3As shown in the figure, the pool body 1 of the present utility model adopts a cuboid structure, and its interior is divided into a primary sedimentation bin X, a horizontal pipe sedimentation bin Y, and a final sedimentation bin Z according to the distribution of the conical dust removal hopper arranged below. Among them, the primary sedimentation bin X mainly conducts preliminary sedimentation on the sewage entering the pool body 1. The sewage flows into the water inlet trough 2 from the water inlet pipe of the primary sedimentation bin X, and then flows into the primary sedimentation bin X from the water outlet side of the water inlet trough 2. Since the upper-stage filtering and guiding plate A is provided in the middle of the primary sedimentation bin X, the upper edge of the upper-stage filtering and guiding plate A is higher than the upper edge of the water inlet trough 2, which blocks the flowing trend of the sewage moving forward. Moreover, the upper-stage filtering and guiding plate A is inclined, with its upper part facing the water inlet direction and its lower part facing the flowing water direction, so as to guide the water flow downward. While guiding the flow, through the filtering and flowing function of the filtering sieve plate, the flow rate of the filtered sediment is further increased.

[0065] By the same principle, the lower-stage filtering and guiding plate B guides the water flow upward, and at the same time, utilizes the filtering and flowing function of the filtering sieve plate to further increase the speed of the filtered sediment, thereby improving the filtering and sedimentation efficiency of the entire sedimentation tank. When setting the upper-stage filtering and guiding plate A and the lower-stage filtering and guiding plate B, the sludge layer 18 is always oriented upward, so that the sediment accumulated on the upper surface of the filtering and guiding plate can slide downward into the conical dust removal hopper under the action of the water potential of the water flow, and finally, slag and sewage are discharged through the conical dust removal hopper.

[0066] After the upward guiding action of the lower-stage filtering and guiding plate B on the water flow, the sewage enters the next treatment stage and enters the horizontal pipe sedimentation bin Y. An automatic dust-removing inclined plate assembly and a horizontal pipe assembly are arranged in the bin body of the horizontal pipe sedimentation bin Y. The automatic dust-removing inclined plate assembly is composed of multiple units of automatic dust-removing inclined plates arranged side by side, and the horizontal pipe assembly is composed of multiple horizontal pipes 3 arranged side by side. The automatic dust-removing inclined plate assembly is obliquely installed in the sedimentation tank, the upper surface of the automatic dust-removing inclined plate assembly is parallel to the horizontal pipe assembly, and the length direction of the horizontal pipe assembly is perpendicular to the length direction of the automatic dust-removing inclined plate assembly.

[0067] The automatic dust-removing inclined plate unit of the present utility model adopts two major types of structures, and each type is further divided into several specific structures, which are respectively;

[0068] The first major type: When the channel steel inclined plate 20 and the automatic dust-removing spray pipe adopt a split structure, the structures of the channel steel inclined plates 20 are the same and are similar to the original traditional structure of the horizontal pipe sedimentation tank, that is, the end face of the channel steel inclined plate 20 is in the shape of a square notch, the upper end of the channel steel inclined plate 20 is open, and the upper edges of the left and right groove walls of the opening extend outward to form a connecting support plate 201; the lower surface of the horizontal pipe is fixed on the connecting support plate 201, and multiple units of channel steel inclined plates 20 are connected side by side through the connecting support plate 201. The automatic dust-removing spray pipe is divided into three structures, which are respectively:

[0069] The first type: The automatic dust cleaning nozzle uses an independent nozzle type flushing pipe with a square cross-section, as Figures 4 - 7 shown;

[0070] As Figure 4 and Figure 5 shown, the independent nozzle type flushing pipe with a square cross-section includes a square flushing pipe 6a made of an integrally sealed hollow pipe and a flushing nozzle 4 installed on the upper surface of the flushing pipe 6a. A high-pressure water interface 61 is provided at the upper end of the flushing pipe 6a. The upper surface of the flushing pipe 6a is a plane. A row of grooves 7 are arranged on the upper surface of the flushing pipe 6a from top to bottom. The groove 7 has a right-angled trapezoidal structure. The right-angled waist surface is parallel to the upper surface of the flushing pipe 6a, and the inclined waist surface is the bottom surface of the groove 7;

[0071] As Figure 6 and Figure 7 shown, the flushing nozzle 4 is installed in the groove 7. The water inlet 41 of the flushing nozzle 4 communicates with the inside of the flushing pipe 6. The water outlet of the flushing nozzle 4 is in the shape of a flat duckbill. The orientation of the flushing nozzle 4 is the same as the incoming direction of the high-pressure water. The flushing nozzle 4 includes a base 42 and a top cover 43. The base 42 is set with the rear higher than the front. An opening is provided at the middle position of the base 42 as the water inlet 41. The top cover 43 is covered on the base 42, and there is a gap between the front end of the top cover 43 and the front end of the base 42 to form a water spraying port 44. The inside between the top cover 43 and the base 42 is hollow as a flow channel. The water inlet 41 and the water spraying port 44 are communicated through the flow channel. The base 42 is embedded in the groove 7 of the flushing pipe 6 and a sealing gasket 46 is provided. The base 42 and the groove 7 are connected by clamping or bolts or welding. Among them, the front end of the top cover 43 extends forward parallelly or arc-shaped for a section to form a positioning edge 45. The function of the positioning edge 45 is to guide and direct the high-pressure water flow. Because the water flow is easy to spray upward under the action of high pressure, combined with the function of this device, the function of the high-pressure water is to wash the sediment deposited on the surface of the flushing pipe 6. The impact effect is the best when spraying parallel to the surface of the flushing pipe 6. On the other hand, it plays a role in preventing the sediment washed down by the upstream flushing nozzle 4 from blocking the downstream flushing nozzle 4. When the sediment from the upstream flows downward, it directly passes through the extended positioning edge 45 to the lower part of the flushing nozzle 4 and is washed again and continues to flow downward.

[0072] The water spraying port 44 is a continuous narrow slit or equally spaced water outlet holes. The water spraying port 44 is a continuous narrow slit to eject a continuous water curtain, or is equally spaced water outlet holes, and the shape can be regular holes such as round holes, square holes, triangular holes or diamond-shaped holes, etc.

[0073] The spraying range of the flushing nozzle 4 at the rear side reaches the rear end of the front-side flushing nozzle 4. The distribution density of the flushing nozzles 4 is arranged in a manner that gradually increases from top to bottom. In principle, the density of the flushing nozzles 4 at the lower part is greater than that of the flushing nozzles 4 at the upper part, aiming to compensate for the problem of pressure reduction when the high-pressure water reaches the lower part.

[0074] The described automatic dust-removing inclined plate unit is spliced through the connecting support plate 201 to form an integrally inclined mud channel cleaning layer. The high-pressure water interface 61 is located at the upper end of the mud channel, and the spraying directions of the flushing nozzles 4 are inclined downward along the mud channel. The horizontal pipe 3 is a raw water pipeline with a diamond structure. The lower end surface of the horizontal pipe 3 is parallel to the upper end surface of the channel steel inclined plate 20, and a mud flow port 31 is opened at a rhombus corner of the horizontal pipe 3 facing downward. Due to the action of gravity, the sediment in the raw water will gradually sink during the flow in the horizontal pipe 3 and finally flow through the mud flow port 31 to the connecting support plate 201 of the channel steel inclined plate 20 of the automatic dust-removing inclined plate unit below and the upper surface of the flushing pipe 6 arranged in the channel steel inclined plate 20. Among them, the amount of sediment falling on the connecting support plate 201 is very small and can be ignored. Or rather, with the flow of the raw water, even if sediment accumulates, it will be washed away and then precipitate onto the upper surface of the flushing pipe 6. Among them, the sediment precipitated onto the upper surface of the flushing pipe 6 is washed downward under the impact of the high-pressure water flowing in the flushing pipe 6 and the flushing nozzles 4.

[0075] Among them, for the convenience of installation and transportation of the horizontal pipe 3, the present utility model installs the horizontal pipe 3 by means of a specific structure assembly. The first structure adopts the structure as Figure 8 shown, which is composed of a plurality of folded plate assemblies. Each folded plate assembly includes an upper parallel plate 3-1, an inclined plate 3-2, and a lower parallel plate 3-3. The upper parallel plate 3-1, the inclined plate 3-2, and the lower parallel plate 3-3 are sequentially connected end to end. The upper parallel plate 3-1 and the lower parallel plate 3-3 are parallel, and the upper parallel plate 3-1 is longer than the lower parallel plate 3-3. The included angle formed by the inclined plate 3-2 with the upper parallel plate 3-1 and the lower parallel plate 3-3 is an obtuse angle. The upper edge of the upper parallel plate 3-1 of each folded plate assembly is welded seamlessly with the lower edge of the upper parallel plate 3-1 of the previous folded plate assembly (in the attached drawing, in order to show the independent component structure, there is a certain gap here); the upper and lower two folded plate assemblies form a diamond-shaped horizontal pipe 3. The second structure adopts the structure as Figure 9The shown structure is composed of multiple inverted U-shaped components spliced together. Each inverted U-shaped component includes an upper parallel plate 3-4, an inclined plate 3-5, and a lower parallel plate 3-6. The upper parallel plate 3-4, the inclined plate 3-5, and the lower parallel plate 3-6 are sequentially connected end to end. The upper parallel plate 3-4 and the lower parallel plate 3-6 are parallel, and the upper parallel plate 3-4 is longer than the lower parallel plate 3-6. The included angle between the inclined plate 3-5 and the upper parallel plate 3-4 is an acute angle, and the included angle formed by the inclined plate 3-5 and the lower parallel plate 3-6 is an obtuse angle. The upper edge of the upper parallel plate 3-4 of each inverted U-shaped component is seamlessly welded to the lower edge of the upper parallel plate 3-4 of the previous inverted U-shaped component (in the attached drawing, in order to show the structure of independent components, there is a certain gap here). The upper and lower two folded plate components form a diamond-shaped horizontal pipe 3.

[0076] The second type: The automatic ash cleaning spray pipe uses a flushing pipe with a circular cross-section.

[0077] As Figure 8 shown, the flushing pipe with a circular cross-section is a circular flushing pipe 6b made of an integrally sealed hollow pipe. A high-pressure water interface 61 is provided at the upper end of the flushing pipe 6b. A plurality of spray holes 62 are provided on the upper half of the pipe wall of the circular flushing pipe 6b. The opening direction of the spray holes 62 is downward along the axial direction of the flushing pipe 6b, and the spray angle is 0 - 90°.

[0078] The third type: The automatic ash cleaning spray pipe uses a nozzle integrated flushing pipe with a square cross-section.

[0079] As Figure 9 shown, the nozzle integrated flushing pipe with a square cross-section includes a closed hollow square flushing pipe 6c whose upper end is sealed by an end cap. A high-pressure water interface 61 is provided at the upper end of the flushing pipe 6c. The end cap 63 is a flat plate, and a row of nozzles 64 are provided on the flat plate at intervals from top to bottom. The spraying direction of the nozzles 64 is downward, and the spray angle is 0 - 90°.

[0080] The second major category: When the channel steel inclined plate 20 and the automatic ash cleaning spray pipe adopt an integrated structure; the original channel steel is discarded, and the channel steel inclined plate and the automatic ash cleaning spray pipe are combined, which can not only meet the installation and support functions but also perform flushing.

[0081] The fourth structure: As Figure 10 shown;

[0082] The automatic dust cleaning inclined plate includes a square flushing tank 201 with an open upper end and a sealing cover plate 202. The left side of the upper port of the square flushing tank 201 extends outward to form a left masking plate 203. A right supporting plate 204 is provided below the symmetric position of the left masking plate 203. Multiple units of the automatic dust cleaning inclined plates are spliced side by side in an up-and-down stacked form through the left masking plate 203 and the right supporting plate 204 to form an overall inclined mud channel cleaning layer. On the left and right inner walls of the square flushing tank 201, there is a supporting platform 205. The sealing cover plate 202 is erected on the two supporting platforms 205, thus forming a water storage cavity with a hollow interior. Water is stored through the water storage cavity and then sprayed through a nozzle 64. The spraying direction of the nozzle is inclined downward along the mud channel.

[0083] The fifth structure: as Figure 11 shown;

[0084] The automatic dust cleaning inclined plate includes a square flushing tank 201 with an open upper end and a sealing cover plate 202. The right side of the upper port of the square flushing tank 201 extends outward and then downward to form an ear groove 206. Multiple units of the automatic dust cleaning inclined plates are spliced side by side in an overall inclined mud channel cleaning layer by the way that the upper ends of the left side walls are clamped into the ear grooves 206.

[0085] On the left and right inner walls of the square flushing tank 201, there is a supporting platform 205. The sealing cover plate 202 is erected on the two supporting platforms 205, thus forming a water storage cavity with a hollow interior. The square flushing tank 201 is provided with a high-pressure water interface 61 corresponding to the water storage cavity. On the sealing cover plate 202, there is a row of nozzles 64 arranged at intervals from top to bottom. The spraying direction of the nozzles is inclined downward along the mud channel.

[0086] Working principle:

[0087] Embodiment 1

[0088] As Figure 1 、 Figure 3 、 Figure 5 and Figure 6 shown, first, the installation and distribution method of the device is described. In this embodiment, through the channel steel inclined plate 20 as the basic support bracket, the channel steel inclined plate 20 is placed obliquely in the sedimentation tank. Multiple channel steel inclined plates 20 are spliced through the connection support plate 201 to form an overall inclined flat mud channel. A flushing pipe 6 is clamped in each channel steel inclined plate 20 to form a mud channel flushing device that can be flushed with high-pressure water. Then, multiple horizontal pipes 3 are installed and fixed in parallel above the flat mud channel. One side of the horizontal pipe 3 that is parallel to and in contact with the channel steel inclined plate 20 is fixed to the connection support plate 201. According to the above method, multiple rows of alternately stacked automatic dust cleaning inclined plate assemblies and horizontal pipe assemblies are set according to the size of the sedimentation tank.

[0089] Secondly, raw water enters the horizontal pipe 3. The sludge precipitated in the horizontal pipe 3 enters the lower mud channel from the sludge outlet 31 below the horizontal pipe 3. The flushing nozzles 4 on the mud channel spray a downward water curtain or water flow to scour the surface of the mud channel. At the same time, the accompanying water flow carries the sludge and flows downward along the surface of the flushing pipe 6. Since the flushing action always exists and can cover almost the entire mud channel, the accumulation of sludge on the mud channel is avoided to the greatest extent, thereby preventing the blockage of the mud channel and improving the utilization efficiency of the sedimentation tank.

[0090] During maintenance, the damaged nozzle or the entire flushing pipe 6 that has been under high-pressure scouring for a long time can be removed and replaced as a whole, which greatly reduces the maintenance cost.

[0091] In other embodiments, the flushing pipe 6 and the flushing nozzles 4 can also be produced by an integrated manufacturing process or welded assembly. When replacing, the entire flushing pipe 6 can be directly replaced.

[0092] Embodiment 2

[0093] As Figure 1 、 Figure 3 、 Figure 5 and Figure 6 shown, according to the installation and distribution method of the present device, in this embodiment, through the automatic ash cleaning inclined plate with an integrated structure as the basic support bracket, the automatic ash cleaning inclined plates of multiple units are placed in the sedimentation tank obliquely through the fourth and fifth structures. The automatic ash cleaning inclined plates of multiple units are spliced through two types to form an overall inclined plane mud channel. The automatic ash cleaning inclined plate of each unit is equivalent to a flushing pipe, forming a mud channel flushing device that can be flushed by high-pressure water. Then, multiple horizontal pipes 3 are fixedly installed in parallel above the plane mud channel. The horizontal pipes 3 can be fixed through one side surface that is parallel and in contact with the square flushing tank 201.

[0094] Embodiment 3

[0095] As Figure 1 、 Figure 2 、 Figure 4 and Figure 7 shown, multiple channel steel inclined plates 20 are spliced through the connecting support plate 201 to form an overall inclined conical structure surface with a curvature. This installation method is applicable to the sedimentation tank 8 with a circular structure. A circle of inverted conical structure mud channel surfaces is arranged around the inner wall of the circular structure sedimentation tank. Then, the horizontal pipes 3 are installed in parallel and perpendicularly intersecting on the upper row of the channel steel inclined plates 20, and multiple rows of ash cleaning components are arranged according to the sediment volume in the sedimentation tank.

[0096] Adopting this structure can effectively improve the sedimentation rate of the sedimentation tank, avoid the blockage phenomenon caused by the deposition and accumulation of sludge in the mud channel, improve the utilization efficiency of the sedimentation tank, and reduce the maintenance cost.

[0097] After the sedimentation treatment in the horizontal pipe sedimentation tank Y, the water quality has been greatly improved at this time. The sediment and precipitate in the sewage are further sedimentated and purified. Finally, the relatively clear sewage flows into the final sedimentation tank Z, where the final purification and sedimentation treatment is carried out. The working principle of the final sedimentation tank Z is the same as that of the primary sedimentation tank X, which will not be elaborated here. Finally, the relatively clear water flows out of the tank body 1 through the filtering type clear water channel 15 of the final sedimentation tank Z.

[0098] At the same time, the working principle of the filtering type clear water channel 15 is as follows: The clarified liquid after purification is filtered again by the filter box 12 arranged below the clear water tank 11. After filtration, it enters from the filtered water inlet end of the main through pipe 131. At this time, since the backwashing mode is not turned on, the flap 135 is in a vertical state under its own weight. The filtered water directly flows into the clear water tank 11 through the filtered water outlet end, and then is discharged to the outside of the equipment through the drain port on the clear water tank 11. After a period of filtration use, a large amount of filter substances accumulate around the filter box 12, blocking the progress of the filtered water. At this time, the backwashing mode is turned on, and the purified water enters from the backwashing pipe 132. Since the pressure of the backwashing water is greater than the water pressure inside the clarifier body and greater than the elastic force of the return spring 137, the backwashing water impacts the flap 135, forcing the flap 135 to rotate counterclockwise around the rotating shaft 134, flipping from the natural vertical state to the upper right until the flap 135 abuts against the lower end of the inner sleeve 136. At this time, the flap 135 blocks the filter pipeline, opens the 6-way backwashing pipe, and the backwashing water starts to wash the filter box 12 from the inside to the outside, washing away the filter substances attached to the periphery of the filter box 12, and finally falling downwards. When the backwashing ends, through the return spring 137 of the flap 135, the flap 135 can be quickly restored to its original position, quickly guiding the filtering system of the filtering type clear water channel 15 to make it work normally.

[0099] At present, in the traditional sedimentation tank, a multi-row horizontal pipe 1 is arranged in a stacked manner, only sedimenting the sediment, and using the sludge slideway to directionally transport the sediment to the mud discharge port. Generally, the sediment slides down by its own weight in the sludge slideway; while the present utility model subverts the traditional ash cleaning method, using the high-pressure water flow filled in the closed washing pipe 3, and the high-pressure water flow is secondarily pressurized by the washing nozzle 4 to eject a water column or a water curtain with a certain impact force, impacting the sediment precipitated from the horizontal pipe 1, accelerating the sediment to quickly flow to the sediment discharge structure or the mud discharge port at the bottom of the sedimentation tank. The purpose of acceleration is on the one hand to prevent the accumulation of sediment and cause blockage, and on the other hand to accelerate the sedimentation and flow rate of the sediment, greatly improving the sedimentation rate of the sedimentation tank. Using this device, the sedimentation rate of the traditional sedimentation tank can be increased by 3-5 times.

[0100] In the above figures, the "X" in the horizontal pipe represents the water flow direction, and the arrow represents the sludge flow direction. Finally, it should be noted that: the above are only some embodiments of the present invention. For those of ordinary skill in the art, without departing from the creative concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention.

Claims

1. A multi-stage purification self-cleaning horizontal tube sedimentation tank, characterized in that: The tank body includes a tank body, which is divided into a primary sedimentation bin, a horizontal pipe sedimentation bin and a final sedimentation bin from the water inlet end to the water outlet end. A conical dust discharge hopper is provided at the lower end of each bin body; a water inlet trough is provided at the upper water inlet side of the primary sedimentation bin, and an upper filter guide plate A and a lower filter guide plate B are provided in the middle of the primary sedimentation bin; An automatic cleaning inclined plate assembly and a horizontal tube assembly are arranged in the silo body of the horizontal tube sedimentation silo. The automatic cleaning inclined plate assembly is composed of a plurality of units of automatic cleaning inclined plates arranged side by side, and the horizontal tube assembly is composed of a plurality of horizontal tubes arranged side by side. The automatic cleaning inclined plate assembly is obliquely installed in the horizontal tube sedimentation silo. The upper surface of the automatic cleaning inclined plate assembly is parallel to the horizontal tube assembly, and the length direction of the horizontal tube assembly is perpendicular to the length direction of the automatic cleaning inclined plate assembly. The automatic cleaning inclined plate comprises a channel steel inclined plate and an automatic cleaning nozzle arranged in the channel steel inclined plate. A row of nozzles are arranged at intervals from top to bottom on the upper surface of the automatic cleaning nozzle, and the spraying direction of the nozzles is downward. A high-pressure water interface is arranged on the automatic cleaning nozzle. The horizontal pipe is a raw water pipe with a diamond-shaped structure, the lower end surface of the horizontal pipe is parallel to the upper end surface of the channel steel inclined plate, and a mud flow outlet is opened at a diamond-shaped position of the horizontal pipe; The middle part of the final sedimentation bin is provided with an upper filtering guide plate C and a lower filtering guide plate D, and the upper water outlet side of the final sedimentation bin is provided with a filtering clean water channel; The upper filtering guide plate A and the lower filtering guide plate B both adopt filtering sieve hole plates, the upper edge of the upper filtering guide plate A is higher than the upper edge of the water inlet trough, the upper filtering guide plate A is tilted, the upper part of the upper filtering guide plate A faces the water inlet direction, and the lower part faces the water flow direction, so as to guide the water flow downward; the lower filtering guide plate B is arranged relative to the tilt direction of the upper filtering guide plate A, and the lower filtering guide plate B guides the water flow upward; the upper filtering guide plate C and the lower filtering guide plate D both adopt filtering sieve hole plates, the upper filtering guide plate C is symmetrically arranged with the upper filtering guide plate A, and the lower filtering guide plate D is symmetrically arranged with the lower filtering guide plate B.

2. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 1 is characterized by: The above-mentioned filter screen plate comprises a supporting layer, a screening layer and a slippery mud layer which are arranged in sequence, and the supporting layer and the slippery mud layer are provided with symmetrically communicating through holes.

3. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 1 is characterized in that: When the channel steel inclined plate and the automatic dust cleaning nozzle adopt a split structure, the end face of the channel steel inclined plate is in the shape of a square notch, the upper end of the channel steel inclined plate is open, and the upper edges of the left and right groove walls of the opening extend outward to form a connecting support plate; the bottom of the horizontal pipe is fixed on the connecting support plate, and the channel steel inclined plates of multiple units are connected side by side through the connecting support plate; the automatic dust cleaning nozzle adopts an independent nozzle-type flushing pipe with a square cross-section or a flushing pipe with a circular cross-section or a square cross-section nozzle integrated flushing pipe, and the independent nozzle-type flushing pipe with a square cross-section includes a square flushing pipe made of an integrally closed hollow pipe and a flushing nozzle installed on the upper surface of the flushing pipe, a high-pressure water interface is arranged at the upper end of the flushing pipe, the upper surface of the flushing pipe is a plane, and a row of embedded grooves are arranged from top to bottom on the upper surface of the flushing pipe, and the embedded grooves are in a right-angled trapezoidal structure, The right-angled waist surface is parallel to the upper surface of the flushing pipe, and the inclined waist surface is the bottom surface of the embedded groove; the flushing nozzle is installed in the embedded groove; the water inlet of the flushing nozzle is connected to the inside of the flushing pipe, and the water outlet of the flushing nozzle is flat duckbill-shaped, and the direction of the flushing nozzle is the same as the direction of high-pressure water; the flushing pipe with a circular cross-section is a circular flushing pipe made of an overall closed hollow pipe, and a high-pressure water interface is arranged at the upper end of the flushing pipe, and a plurality of injection holes are arranged on the upper half of the pipe wall of the circular flushing pipe, and the opening direction of the injection holes is downward along the axial direction of the flushing pipe; the integrated nozzle flushing pipe with a square cross-section includes a closed hollow square flushing pipe whose upper end is sealed by an end cover, and a high-pressure water interface is arranged at the upper end of the flushing pipe, and the end cover is a flat plate, and a row of nozzles are arranged from top to bottom on the flat plate, and the spray direction of the nozzle is downward.

4. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 3 is characterized by: The distribution density of the flushing nozzles is arranged in a manner of gradually increasing from top to bottom; the flushing nozzles include a base and a top cover, the base is arranged with the back higher and the front lower, the middle position of the base is opened as a water inlet, the top cover is arranged on the base, and there is a gap between the front end of the top cover and the front end of the base to form a water spray outlet, the internal hollow space between the top cover and the base serves as a flow channel, the water inlet and the water spray outlet are connected through the flow channel, the base is embedded in the embedding groove of the flushing pipe and a sealing gasket is provided, the base and the embedding groove are clamped or connected by bolts or welding; the front end of the top cover extends forward in parallel or in an arc shape to form a positioning edge; the water spray outlet is a continuous narrow slit or water outlet holes arranged at equal intervals.

5. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 4 is characterized in that: The automatic dust cleaning inclined plate unit is spliced ​​by connecting the support plates to form an overall inclined mud road cleaning layer. The high-pressure water interface is located at the upper end of the mud road, and the spray direction of each flushing nozzle is inclined downward along the mud road.

6. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 1 is characterized by: When the channel steel inclined plate and the automatic dust cleaning nozzle adopt an integrated structure, the automatic dust cleaning inclined plate includes a square flushing trough with an opening at the upper end and a sealing cover plate. The left side of the upper port of the square flushing trough extends outward to form a left mask plate, and a right support plate is provided below the symmetrical position of the left mask plate. Multiple units of automatic dust cleaning inclined plates are spliced ​​side by side by stacking the left mask plate and the right support plate up and down to form an overall inclined mud road cleaning layer; a supporting platform is provided on the left and right inner walls of the square flushing trough, and the sealing cover plate is mounted on two supporting platforms to form an internal hollow water storage chamber. The square flushing trough is provided with a high-pressure water interface corresponding to the water storage chamber, and a row of nozzles are provided on the sealing cover plate from top to bottom, and the spraying direction of the nozzles is inclined downward along the mud road.

7. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 1 is characterized by: When the channel steel inclined plate and the automatic dust cleaning nozzle adopt an integrated structure, the automatic dust cleaning inclined plate includes a square flushing trough with an opening at the upper end and a sealing cover plate. The right side edge of the upper port of the square flushing trough extends outward and then downward to form an ear groove. Multiple units of automatic dust cleaning inclined plates are spliced ​​side by side by means of the ear groove inserted into the upper end of the left side wall to form an overall inclined mud road cleaning layer; a supporting platform is provided on the left and right inner walls of the square flushing trough, and the sealing cover plate is mounted on two supporting platforms to form an internal hollow water storage chamber. The square flushing trough is provided with a high-pressure water interface corresponding to the water storage chamber, and a row of nozzles are provided on the sealing cover plate from top to bottom, and the spraying direction of the nozzles is inclined downward along the mud road.

8. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 1 is characterized by: The filter-type clean water channel comprises a clean water tank, a plurality of filter boxes and a plurality of three-way selector valves. The plurality of filter boxes are arranged in a ring shape below the clean water tank, the top of the filter box is connected to the bottom plate of the clean water tank, and the three-way selector valve is arranged on the bottom plate of the clean water channel; the three-way selector valve comprises a main through pipe and a backwash pipe, the lower end of the main through pipe is a filtered water inlet end, the filtered water inlet end is arranged in the filter box, the upper end of the main through pipe is a filtered water outlet end, which is connected to the inside of the clean water tank, the inlet of the backwash pipe is set as a reverse flushing port, and the reverse flushing port is connected to a clean water source; the pipe body of the main through pipe is connected to one end of the backwash pipe, and at the upper edge of the interface between the main through pipe and the backwash pipe A rotating shaft is provided, and a flap is sleeved on the rotating shaft. The flap rotates 0-90 degrees around the rotating shaft. When the flap is located in a position parallel to the cross-section of the main through-tube, that is, the main through-tube where the flap is at a 90 degree position is provided with an inner sleeve stopper, and the lower end of the inner sleeve is slightly higher than the height of the rotating shaft; the filter box has an open upper end, and each surface of the box adopts a filter plate; the flap is positioned at 90 degrees through the lower end of the inner sleeve; when backwashing is not started, the flap is at 0 degrees, the main through-tube is connected, and a filtering pipeline is formed; when backwashing is started, the flap is at 90 degrees, the backwashing pipe and the lower pipe body of the main through-tube are connected, and a backwashing pipeline is formed.

9. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 8, characterized in that: The recoil pipe comprises a main pipe butt joint pipe and a recoil water source butt joint pipe, the main pipe butt joint pipe and the recoil water source butt joint pipe are sealed and connected via a butt flange, and the main pipe butt joint pipe has a length of 1cm-2cm.

10. The multi-stage purification self-cleaning horizontal pipe sedimentation tank according to claim 9, characterized in that: The three-way selector valve also includes a flap return spring, one end of which is fixed to the bottom of the inner wall of the recoil pipe, and the other end is fixed to the flap.

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