A rainwater well built-in spiral plate cyclone water-sand separation device

Abstract

The present invention provides a spiral plate cyclone water-sand separation device built into a rainwater well, comprising an outer cylinder, an inner cylinder, a spiral plate, a cover body and a sand collecting net; the inner cylinder is located in the outer cylinder, the spiral plate is located in the inner cylinder, and the spiral plate is arranged around the inner cylinder, the sand collecting net is located at the lower end of the inner cylinder, and a drainage outlet is connected to the lower end of the outer cylinder; a plurality of sand flushing holes are provided on the inner cylinder; a plurality of energy dissipation baffle groups are provided on the spiral plate, and each energy dissipation baffle group includes short baffles and long baffles arranged in sequence along the spiral direction of the spiral plate. The beneficial effects of the present invention are as follows: the water-sand separation device can greatly reduce the sediment content in rainwater flowing into the sewer, reduce the blockage of the sewer, and at the same time, the sediment in the rainwater can be easily cleaned. The device is easy to install, and the water-sand separation device can be used to efficiently clean a large amount of long-term silted sediment and solve the safety hazards of sanitation workers under the premise of saving time and material resources.

Description

Technical Field

[0001] The invention relates to the technical field of solid-liquid separation devices, in particular to a built-in spiral plate cyclone water-sediment separation device for a rainwater well. Background Art

[0002] In the main rainwater wells of the road drainage system and the sewers connected to the rainwater wells, the rainwater wells are vertically set with rainwater grates on the upper end. The rainwater wells are used to guide the water flow generated on the road during rain into the sewer system to achieve the purpose of road drainage. Since the water flow from rainwater into the rainwater wells has a high sediment content, it is easy to cause sewer blockage. After the sewer is blocked, sanitation workers need to enter the sewer pipes to clear it. In recent years, safety accidents caused by various reasons in sewers have occurred frequently in China, and sanitation workers have been fatally injured when clearing sewer pipes in various places. Therefore, in order to reduce the occurrence of sewer blockage, it is necessary to reduce the sediment content in the rainwater entering the sewer. At present, the technologies used for water-sand separation mainly include sedimentation tanks, inclined plate mixed fluid separators and sand filters. The sedimentation tank occupies a large area, and the sediment settled in the tank is difficult to remove, and the workload is large. Plate mixed fluid separation and sand filters are difficult to use in sewers due to their large size. Summary of the invention

[0003] In view of this, the present invention provides a rainwater well built-in spiral plate cyclone water-sand separation device, comprising an outer cylinder, an inner cylinder, a spiral plate, a cover body and a sand collecting net;

[0004] The inner cylinder is located in the outer cylinder, the spiral plate is located in the inner cylinder, and the spiral plate is arranged around the inner cylinder. The outer cylinder, the inner cylinder and the spiral plate are coaxially arranged. The inner edge of the spiral plate is connected to the outer wall of the inner cylinder, and the outer edge of the spiral plate is connected to the inner wall of the outer cylinder. The sand collecting net is located at the lower end of the inner cylinder, and the sand collecting net is made of waterproof microporous cloth material. The lower end of the outer cylinder is connected to a drain; a plurality of sand flushing holes are provided on the inner cylinder;

[0005] The cover body is fixedly connected to the upper end of the outer cylinder body, and a closed cover plate is provided in the middle of the cover body to close the upper end of the inner cylinder body, and a plurality of water-permeable slits are distributed around the closed cover plate;

[0006] The spiral plate is provided with a plurality of energy dissipation baffle groups, each of which includes short baffles and long baffles arranged in sequence along the spiral direction of the spiral plate, the ends of the short baffles and the long baffles are connected to the outer wall of the inner cylinder, wherein the length of the short baffle is shorter than that of the long baffle, a sand flushing groove is formed between the short baffles and the long baffles, and the sand flushing hole is located at the end of the sand flushing groove.

[0007] Furthermore, the drain outlet is connected to a drain pipe.

[0008] Furthermore, the water-sand separation device also includes a base; the base includes a connecting bottom plate, and a connecting flange is provided at the lower end of the outer cylinder, and the connecting flange is connected to the connecting bottom plate through connecting bolts.

[0009] Furthermore, the base also includes a base plate, which is located below the connecting bottom plate. A plurality of vertically arranged support columns are provided between the base plate and the connecting bottom plate, and the support columns are fixedly connected to the base plate and the connecting bottom plate.

[0010] Furthermore, the long baffle is inclined relative to the short baffle.

[0011] Furthermore, an elastic tensioning ring is provided at the upper end of the sand collecting net, and the elastic tensioning ring is located on the inner wall of the lower end of the inner cylinder. The elastic tensioning ring makes the upper end of the sand collecting net close to the lower end of the inner cylinder.

[0012] Furthermore, a fixing plate is provided at the upper end of the inner cylinder, the fixing plate is supported on the upper end of the inner cylinder and is pressed onto the inner cylinder by the closing cover plate, a plurality of connecting ropes are provided on the lower surface of the fixing plate, and the lower ends of the connecting ropes are connected to the upper end of the sand collecting net.

[0013] The beneficial effects of the spiral plate cyclone water-sand separation device built into a rainwater well of the present invention are as follows: the water-sand separation device comprises an outer cylinder, an inner cylinder, a spiral plate and a sand collection net, the inner cylinder is located in the outer cylinder, the spiral plate is located in the inner cylinder, and the spiral plate is arranged around the inner cylinder; a plurality of energy dissipation baffle groups are arranged on the spiral plate; sand flushing holes are arranged between each energy dissipation baffle group; wherein the energy dissipation baffle group can dissipate the energy of rainwater flowing around the spiral plate, so that the part with more sediment in the rainwater flows around the inner side, and the part with less sediment in the rainwater flows around the outer side; the rainwater flowing on the inner side carries the sediment into the inner cylinder through the sand flushing holes and falls into the sand collection net; thus, the sediment content in the rainwater flowing into the sewer can be greatly reduced, the blockage of the sewer can be reduced, and the sediment in the rainwater can be conveniently cleaned. The device is easy to install; using the water-sand separation device, a large amount of long-term sediment can be efficiently cleaned and the safety hazards of sanitation workers can be solved under the premise of saving time and material resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The present invention is a schematic diagram of the internal structure of a spiral plate cyclone water-sand separation device built into a rainwater well according to an embodiment of the present invention.

[0015] Figure 2 yes Figure 1 A view of the short and medium baffles 32 and the long baffles 33

[0016] Figure 3 yes Figure 1 A top view of the middle cover body 4.

[0017] Figure 4 yes Figure 1 Schematic diagram of the structure of CIMC Sand Net 5.

[0018] In the above figure: 1-outer cylinder, 11-drain pipe, 12-connecting flange, 2-inner cylinder, 21-sand flushing hole, 3-spiral plate, 31-short baffle, 32-long baffle, 4-cover, 41-closed cover, 42-water-permeable seam, 5-sand collecting net, 51-fixed plate, 52-elastic tensioning ring, 53-connecting pull rope, 6-connecting bottom plate, 61-base plate, 62-support column. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described below with reference to the accompanying drawings.

[0020] Please refer to Figures 1 to 4 A spiral plate cyclone water-sand separation device with a built-in spiral plate in a rainwater well comprises an outer cylinder 1, an inner cylinder 2, a spiral plate 4, a cover 4 and a sand collecting net 5.

[0021] The outer cylinder 1 and the inner cylinder 2 are both cylindrical structures. The inner cylinder 2 and the spiral plate 3 are both located inside the outer cylinder 1, and the spiral plate 3 is arranged around the inner cylinder 1. The outer cylinder 1, the inner cylinder 2, and the spiral plate 3 are coaxially arranged. The inner edge of the spiral plate 3 is connected to the outer wall of the inner cylinder 2, and the outer edge of the spiral plate 3 is connected to the inner wall of the outer cylinder 1. The three are connected as a whole. The sand collecting net 5 is located at the lower end of the inner cylinder 2 and closes the lower end of the inner cylinder 2; the sand collecting net is made of waterproof microporous fabric material, which allows water to pass through and blocks mud and sand. The lower end of the outer cylinder 1 is connected to a drain outlet, and a drain pipe 1 is connected to the drain outlet. The drain pipe 11 is used to discharge the water gathered at the lower end of the outer cylinder 1; the inner cylinder 2 is provided with a plurality of sand flushing holes 31 that penetrate the inner cylinder.

[0022] The cover body 4 is fixedly connected to the upper end of the outer cylinder body 1, and a closed cover plate 41 is provided in the middle of the cover body 4 to close the upper end of the inner cylinder body 1. A plurality of water-permeable slits 42 are distributed around the closed cover plate 41; the water-permeable slits 42 are used to allow rainwater to flow from the upper end of the outer cylinder body 1 into the outer cylinder body 1 and block larger impurities.

[0023] The spiral plate 3 is provided with a plurality of energy dissipation baffle groups, each of which includes a short baffle 31 and a long baffle 32 arranged in sequence along the spiral (downward) direction of the spiral plate, and the ends of the short baffle 31 and the long baffle 32 are connected to the outer wall of the inner cylinder 2, wherein the length of the short baffle 31 is shorter than the length of the long baffle 32, and a sand flushing groove is formed between the short baffle 31 and the long baffle 32, and the sand flushing hole 21 is located at the end of the sand flushing groove. Preferably, the long baffle 32 is inclined relative to the short baffle 31, the upper end of the long baffle 32 is close to the short baffle 31, and the projection of the long baffle 32 does not block the short baffle 31. The energy dissipation baffle group dissipates the energy of the water flow on the spiral plate 3, slows down the water flow velocity, and facilitates sediment sedimentation. The height of the short baffle 31 is lower than that of the long baffle 32, and the length is short, so that the water flow can be subjected to the first energy dissipation treatment, and it can also play a role in the preliminary diversion of water and sand. The long baffle 32 is slightly inclined toward the short baffle 31. The long baffle 32 can dissipate the energy of the water flow after the short baffle 31 dissipates the energy for the second time, and can form a sand flushing groove between the long baffle 32 and the short baffle 31, and effectively utilize the circulation formed between the long baffle 32 and the short baffle 31 to flush the settled sediment into the inner cylinder 2 through the sand flushing groove and the sand flushing hole 21.

[0024] Preferably, a fixing plate 51 is further provided at the upper end of the inner cylinder 2, the fixing plate 51 is supported on the upper end of the inner cylinder 2, and is pressed against the inner cylinder 2 by the closed cover plate 41, and a plurality of connecting pull ropes 53 are provided on the lower surface of the fixing plate 51, and the lower ends of the connecting pull ropes 53 are connected to the upper end of the sand collecting net 5. An elastic tensioning ring 51 is provided at the upper end of the sand collecting net 5, the elastic tensioning ring 51 is located on the inner wall of the lower end of the inner cylinder 2, and the elastic tensioning ring 51 makes the upper end of the sand collecting net 5 close to the inner wall of the inner cylinder 2. Specifically, the elastic tensioning ring 51 is a notched water inlet ring made of elastic metal, which is used to make the upper end of the sand collecting net 5 close to the inner wall of the lower end of the inner cylinder 2 by tensioning elastic force, so that all rainwater and silt flowing into the inner cylinder 2 can enter the sand collecting net 5. The fixing plate 51 and the connecting pull ropes 53 are used to enable sanitation workers to easily take out the sand collecting net 5 filled with silt, so as to facilitate the cleaning of silt.

[0025] Furthermore, the water-sand separation device further comprises a base; the base comprises a connecting bottom plate 6 and a base plate 61, a connecting flange 12 is provided at the lower end of the outer cylinder, and the connecting flange 12 is connected to the connecting bottom plate 6 by connecting bolts. The base plate 61 is located below the connecting bottom plate 6, and a plurality of vertically arranged support columns 62 are provided between the base plate 61 and the connecting bottom plate 6, and the support columns 62 are fixedly connected to the base plate 61 and the connecting bottom plate 6.

[0026] The working process of the spiral plate swirl water-sand separation device built in a rainwater well of the present invention is as follows: the water-sand separation device is vertically installed in a sewer, and a rainwater grate is covered above the sewer; when it rains, rainwater carrying sand passes through the rainwater grate and the cover body 4 of the water-sand separation device, and flows into the outer cylinder 1 from the upper end of the outer cylinder 1; the rainwater carrying sand flows in a spiral along the spiral plate 3 in the outer cylinder 1, and the energy dissipation baffle group (short baffle and long baffle) on the spiral plate 3 dissipates energy for the spirally flowing water flow, thereby slowing down the flow rate of the rainwater flow; the sediment on the inner side of the water flow is partially removed. The content of the rainwater is high and the flow rate is slow. This part of the rainwater enters the sand flushing trough and flows into the inner cylinder 2 from the sand flushing hole 21, and finally falls into the sand collecting net 5. The sand collecting net 5 filters this part of the rainwater, so that the rainwater flows out to the bottom of the outer cylinder 1, and the sand collecting net 5 collects the silt; the sand content of the outer part of the water flow is low and the flow rate is fast. It continues to flow downward along the outer edge of the spiral plate to the bottom of the outer cylinder 1; the silt content in the rainwater gathered at the bottom of the outer cylinder 1 is greatly reduced, realizing the water-sand separation function of the rainwater; the rainwater gathered in the outer cylinder 1 is discharged from the drain pipe 11 and flows along the sewer. When there is too much silt in the sand collecting net 2, the sanitation worker opens the cover 4 and pulls up the entire sand collecting net 5 through the fixing plate 51, which is convenient for cleaning or replacing the silt in the sewer.

[0027] In this document, the directional words such as front, back, top, and bottom are defined by the positions of the components in the drawings and the positions of the components relative to each other, and are only for the sake of clarity and convenience in expressing the technical solution. It should be understood that the use of the directional words should not limit the scope of protection claimed in this application.

[0028] In the absence of conflict, the above embodiments and features in the embodiments may be combined with each other.

[0029] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A rainwater well built-in spiral plate cyclone water-sand separation device, characterized in that: It includes an outer cylinder, an inner cylinder, a spiral plate, a cover and a sand collecting net; The inner cylinder is located in the outer cylinder, the spiral plate is located in the inner cylinder, and the spiral plate is arranged around the inner cylinder. The outer cylinder, the inner cylinder and the spiral plate are coaxially arranged. The inner edge of the spiral plate is connected to the outer wall of the inner cylinder, and the outer edge of the spiral plate is connected to the inner wall of the outer cylinder. The sand collecting net is located at the lower end of the inner cylinder, and the sand collecting net is made of waterproof microporous cloth material. The lower end of the outer cylinder is connected to a drain; a plurality of sand flushing holes are provided on the inner cylinder; The cover body is fixedly connected to the upper end of the outer cylinder body, and a closed cover plate is provided in the middle of the cover body to close the upper end of the inner cylinder body, and a plurality of water-permeable slits are distributed around the closed cover plate; The spiral plate is provided with a plurality of energy dissipation baffle groups, each energy dissipation baffle group includes a short baffle and a long baffle arranged in sequence along the spiral direction of the spiral plate, the ends of the short baffle and the long baffle are connected to the outer wall of the inner cylinder, wherein the length of the short baffle is shorter than the length of the long baffle, a sand flushing groove is formed between the short baffle and the long baffle, and the sand flushing hole is located at the end of the sand flushing groove; The long baffle is inclined relative to the short baffle; The drain outlet is connected with a drain pipe.

2. The built-in spiral plate cyclone water-sand separation device for a rainwater well according to claim 1, characterized in that: The water-sand separation device also includes a base; the base includes a connecting bottom plate, and a connecting flange is provided at the lower end of the outer cylinder, and the connecting flange is connected to the connecting bottom plate through connecting bolts.

3. The built-in spiral plate cyclone water-sand separation device for a rainwater well according to claim 2, characterized in that: The base also includes a base plate, which is located below the connecting base plate. A plurality of vertically arranged support columns are provided between the base plate and the connecting base plate, and the support columns are fixedly connected to the base plate and the connecting base plate.

4. The built-in spiral plate cyclone water-sand separation device for a rainwater well according to claim 1, characterized in that: An elastic tensioning ring is arranged at the upper end of the sand collecting net, and the elastic tensioning ring is located at the inner wall of the lower end of the inner cylinder. The elastic tensioning ring makes the upper end of the sand collecting net close to the lower end of the inner cylinder.

5. The built-in spiral plate cyclone water-sand separation device for a rainwater well according to claim 4, characterized in that: A fixing plate is also provided at the upper end of the inner cylinder, which is supported on the upper end of the inner cylinder and pressed against the inner cylinder by the closing cover plate. A plurality of connecting ropes are provided on the lower surface of the fixing plate, and the lower ends of the connecting ropes are connected to the upper end of the sand collecting net.

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