Desilting and slag removal device for gravity flow sewage pipes

Abstract

The present invention proposes a desilting and slag removal device for gravity flow sewage pipes, which is characterized in that a chain guide rail is installed in the inspection well and the drainage pipe, and the desilting and slag removal device is nested in a hanging bracket, and the hanging bracket is hung on the chain guide rail and moves in the drainage pipe along the chain guide rail, which is used for in-situ desilting and slag removal of the drainage pipe, and the mud and slag collected by the desilting and slag removal device is transported on the ground outside the inspection well by a sludge suction and mud collection vehicle. The present invention makes full use of the internal space of the inspection well and the drainage pipe, realizes the transportation and operation of the desilting and slag removal device in the drainage pipe through the ingenious design of the chain guide rail and the hanging bracket, and realizes in-situ desilting and dredging of the drainage pipe through the desilting and slag removal device integrated with a slag bucket, a filter screen and a mud bucket. Compared with the prior art, the present invention has the outstanding characteristics of strong applicability, easy implementation, diverse functions, flexible operation, and significant effect.

Description

Technical Field

[0001] The invention belongs to the technical field of municipal drainage, and relates to a silt-removing and slag-removing device for a gravity flow sewage pipe. Background Art

[0002] Drainage pipes are engineering facilities that collect and transport urban domestic sewage, industrial wastewater and rainwater. In recent years, with the acceleration of my country's urbanization process, the number and scale of drainage pipe construction have also increased year by year. The increasingly improved drainage pipe system has provided convenience for the transportation of various types of sewage and rainwater in cities and towns. However, as the drainage pipe system becomes increasingly large, problems such as water pollution and secondary disasters in drainage pipes have gradually become prominent.

[0003] The sewage transported in gravity flow sewage pipes contains a high concentration of suspended particles, which are easy to precipitate and form silt in pipe sections with larger diameters and slower flow rates, causing pipe blockages. In addition, for combined sewer pipes, the flow rate of sewage in larger diameter sewage pipes is slower during dry weather, and the suspended particles in the sewage are easy to precipitate and form silt; during rainy days, due to the sharp increase in water volume, the silt in the pipes is washed out, resulting in frequent black and smelly problems in rivers and lakes.

[0004] At present, the desilting of gravity flow sewage pipes is limited to the case of small pipe diameters. Generally, high-pressure water guns, manual traction or push-pull methods are used to clean the particles and sludge in the drainage pipes to the outside of the pipes, or push them to pipes with larger diameters. However, there is no effective desilting and slag removal technology for drainage pipes with larger diameters. Therefore, the market urgently needs a new technology that can effectively remove scum, suspended particles and sludge in drainage pipes. Summary of the invention

[0005] The purpose of the present invention is to make full use of the internal space of the drainage pipe by implementing appropriate engineering modifications to the drainage pipe and the inspection well, transport the silt remover into the interior of the drainage pipe through the design of a chain guide rail and a hanging bracket, and remove the mud and residue scraped by the silt remover by a silt pumping and mud collecting truck, thereby achieving silt removal and residue removal in the drainage pipe.

[0006] To achieve the above-mentioned purpose, the present invention proposes a silt removal and debris removal device for gravity flow sewage pipes, which is characterized in that a chain guide rail is installed in the inspection well and the drainage pipe, and the silt removal and debris removal device is nested in a hanging bracket. The hanging bracket is suspended on the chain guide rail and moves along the chain guide rail in the drainage pipe. It is used for in-situ silt removal and debris removal of the drainage pipe, and the sludge collected by the silt removal and debris removal device is transported to the ground outside the inspection well by a silt suction and mud collection vehicle.

[0007] Furthermore, the chain guide rail includes a supporting frame, on which a driving sprocket, a driven pulley and a chain matching therewith are installed; the wheel surfaces of the driving sprocket and the driven pulley are located in the same plane as the axis of the drainage pipe, and the motor is connected to the driving sprocket to drive the driving sprocket to rotate, thereby driving the chain to move; the driven pulley is provided with a wheel groove, the chain groove of the chain is engaged with the wheel teeth of the driving sprocket, and the outer side of the chain is engaged with the wheel groove of the driven pulley.

[0008] Furthermore, the supporting frame and the side walls of the inspection well are provided with fixed nodes, and the fixed nodes are the connection points between the supporting frame and the side walls of the inspection well, and the connection method is welding, bonding or expansion screw fixing; a frame base is provided at the bottom of the supporting frame, and the frame base is placed at the bottom of the inspection well, and its bottom surface is consistent with the bottom surface of the inspection well.

[0009] Furthermore, the driving sprocket is located at the top of the supporting frame, and the driven pulley is located at the bottom of the supporting frame; the tooth pitch of the driving sprocket is 10-15 cm, and the tooth thickness is 7-9 cm; the wheel groove width of the driven pulley is 5-8 cm, and the wheel groove depth is 6-10 cm; the wheel surfaces of the driving sprocket and the driven pulley are both located in the same plane as the axis of the drainage pipe.

[0010] Furthermore, the suspended bracket includes a frame body and a hook connected to the frame body, the hook passes through the pin shaft of the chain, thereby connecting the frame body to the roller chain of the chain guide rail; the frame body includes an upper frame, a lifting frame arranged at the lower part of the upper frame, and a lower frame that can move up and down along the lifting frame, the upper frame is equipped with a slag bucket, and the lower frame is equipped with a mud bucket, and the heights of the slag bucket and the mud bucket in the drainage pipe can be adjusted by the lifting frame to facilitate skimming of floating slag and shoveling of silt; a filter screen is installed above the mud bucket of the silt remover, and the plane where the filter screen is located is perpendicular to the axis of the drainage pipe; the sludge suction and mud collection vehicle includes a mud storage tank, a suction pump and a mud suction pipe, and the mud collection pipe is placed at the bottom of the downstream inspection well of the sludge crusher.

[0011] Furthermore, the number of the hooks is 2 or more to limit the axial displacement of the hanging bracket in the drainage pipe.

[0012] Furthermore, the upper portion of the hook is a hook-shaped object, and the lower portion is a connecting rod connected to the frame body. The connecting rod needs to have a certain length so that the hanging bracket can smoothly pass through the right-angle bend when moving with the chain.

[0013] Furthermore, the hanging bracket includes double-sided telescopic rods located on both sides of the frame body, and the ends of the double-sided telescopic rods have elastic telescopic rods with universal wheels. The telescopic direction is perpendicular to the axis of the drainage pipe, which is used to limit the lateral displacement of the hanging bracket in the drainage pipe.

[0014] Furthermore, the chain guide rail is installed in the following manner: a portion of the supporting frame and the driving sprocket are installed above the detection well, and the fixed node, the frame base and the driven pulley are installed in the detection well, so that the chain has a single-strand mouth-shaped structure.

[0015] The present invention makes full use of the internal space of the inspection well and the drainage pipe, realizes the transportation and operation of the silt remover in the drainage pipe through the ingenious design of the chain guide rail and the hanging bracket, and realizes the in-situ dredging and silting of the drainage pipe through the silt remover which integrates the slag bucket, the filter screen and the mud bucket.

[0016] Compared with the prior art in the same field, the present invention has the following notable features:

[0017] 1. Strong applicability

[0018] Aiming at the in-situ purification problem of drainage pipes, the system can adapt to drainage pipes of different forms and diameters through the reasonable layout of chain guides, hanging brackets, silt removers and sludge extraction and collection vehicles.

[0019] 2. Easy to implement

[0020] Make full use of the existing space of inspection wells and drainage pipes for simple renovation, with fewer engineering measures, small investment scale, and easy implementation and promotion.

[0021] 3. Versatile

[0022] Through the integration of the slag bucket, filter screen and mud bucket in the silt remover, and in conjunction with the collection of sludge and mud collection trucks, the system can simultaneously remove floating debris, suspended particles and silt in the sewage in the drainage pipe.

[0023] 4. Flexible operation:

[0024] Through the design of chain guide rails and hanging brackets, the system silt remover can be easily transported from the inspection well to the inside of the drainage pipe, and the silt remover can be transported from the drainage pipe to the outside of the inspection well during maintenance.

[0025] 5. Significant results

[0026] The system can effectively clean drainage pipes through the skimming effect of the slag bucket on the silt remover, the filtering effect of the filter screen and the shoveling effect of the mud bucket. It is highly targeted, effective and easy to promote. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a front view of the desilting and slag removing device for gravity flow sewage pipe of the present invention.

[0028] Figure 2 This is the front view of the chain guide rail in the system of the present invention.

[0029] Figure 3 It is a front view of a hanging bracket in which a silt remover and deslagging device is nested in the system of the present invention.

[0030] Figure 4 for Figure 3 Side view of.

[0031] Figures 1 to 4 The numbers in mean:

[0032] 1 - chain guide rail, 11 - supporting frame, 12 - fixed node, 13 - frame base, 14 - driving sprocket, 15 - driven pulley, 16 - chain, 17 - motor;

[0033] 2 - hanging bracket, 21 - hook, 22 - frame, 23 - lifting frame, 24 - lateral telescopic wheel;

[0034] 3 - silt remover, 31 - slag bucket, 32 - filter screen, 33 - mud bucket;

[0035] 4 - sludge pumping and collecting truck;

[0036] 5 - Ground;

[0037] 6 - detection well;

[0038] 7 - Sewage;

[0039] 8 - Drainage pipes. DETAILED DESCRIPTION

[0040] The invention is further described in detail with reference to the following specific embodiments and drawings. The process, conditions, experimental methods, etc. for implementing the present invention, except for the contents specifically mentioned below, are all common knowledge and common common sense in the art and are not particularly limited by the present invention.

[0041] The desilting and slag removal device for gravity flow sewage pipes is characterized in that a chain guide rail 1 is installed in the inspection well 6 and the drainage pipe 8, the desilting and slag removal device 3 is nested in the suspension bracket 2, the suspension bracket 2 is suspended on the chain guide rail 1, and moves along the chain guide rail 1 in the drainage pipe 8, and is used for in-situ desilting and slag removal of the drainage pipe 8. The sludge collected by the desilting and slag removal device 3 is transported to the ground outside the inspection well 6 by a silt suction and mud collection vehicle 4.

[0042] The chain guide includes a support frame 11, on which a driving sprocket 14, a driven pulley 15 and a chain 16 are installed. The wheel surfaces of the driving sprocket 14 and the driven pulley 15 are both located in the same plane as the axis of the drainage pipe 8. The motor 17 is connected to the driving sprocket 14 to drive the driving sprocket to rotate, thereby driving the chain 16 to move. The driven pulley 15 is provided with a wheel groove, and the chain groove of the chain 16 is engaged with the gear teeth of the driving sprocket 15, and the outer side of the chain 16 is engaged with the wheel groove of the driven pulley 15. The support frame and the side wall of the inspection well are provided with a fixed node 12, and the fixed node 12 is the connection point between the support frame 11 and the side wall of the inspection well 6, and the connection method is welding, bonding or expansion screw fixing; the bottom of the support frame 11 is provided with a frame base 13, and the frame base 13 is placed at the bottom of the inspection well, and its bottom surface coincides with the bottom surface of the inspection well 6. The driving sprocket 14 is located at the top of the supporting frame 11, and the driven pulley 15 is located at the bottom of the supporting frame 11. The tooth pitch of the driving sprocket is 10-15 cm, and the tooth thickness is 7-9 cm; the wheel groove width of the driven pulley is 5-8 cm, and the wheel groove depth is 6-10 cm; the wheel surfaces of the driving sprocket and the driven pulley are both located in the same plane as the axis of the drainage pipe 8.

[0043] There are two ways to install the chain guide rail:

[0044] First, the supporting frame 11, the fixed node 12, the frame base 13, the driving sprocket 14 and the driven pulley 15 are all installed in the inspection well 6, so that the chain has a double-strand U-shaped structure;

[0045] Secondly, a part of the supporting frame 11 and the driving sprocket 14 are installed above the inspection well 6, and the fixed node 12, the frame base 13 and the driven pulley 15 are installed in the inspection well 6, so that the chain has a single-strand mouth structure.

[0046] like Figure 3 , Figure 4 As shown, the suspended bracket 2 includes a frame body 22 and a hook 21 connected to the frame body, the hook 21 passes through the pin of the chain 16, thereby connecting the frame body 22 to the roller chain 16 of the chain guide rail; the frame body 22 includes an upper frame, a lifting frame 23 arranged at the lower part of the upper frame, and a lower frame that can move up and down along the lifting frame 23, the upper frame is equipped with a slag bucket 31, and the lower frame is equipped with a mud bucket 33, and the heights of the slag bucket 31 and the mud bucket 33 in the drainage pipe 8 can be adjusted by the lifting frame to facilitate skimming of floating slag and shoveling of silt; a filter screen 32 is installed above the mud bucket of the dredging and slag remover 3, and the plane where the filter screen 32 is located is perpendicular to the axis of the drainage pipe; the sludge suction and mud collecting vehicle 4 includes a mud storage tank, a suction pump and a mud suction pipe, and the mud collecting pipe is placed at the bottom of the downstream inspection well 6 of the sludge crusher.

[0047] Furthermore, the number of hooks is 2 or more to limit the axial displacement of the hanging bracket 2 in the drainage pipe 8; the upper part of the hook is a hook-shaped object 21, and the lower part is a connecting rod 22 connected to the frame body, and the connecting rod 22 needs to have a certain length so that the hanging bracket 2 can smoothly pass through the right-angle bend when moving with the chain; the hanging bracket 2 includes a double-sided telescopic rod 24 located on both sides of the frame body, and the double-sided telescopic rod 24 is an elastic telescopic rod with a universal wheel at the end, and the telescopic direction is perpendicular to the axis of the drainage pipe 8, which is used to limit the lateral displacement of the hanging bracket in the drainage pipe 8.

[0048] The method of using the desilting and slag removal device for a gravity flow sewage pipe is characterized in that the method comprises:

[0049] Installation Phase

[0050] Step 1: Drain the sewage 7 in the drainage pipe 8 in advance so that operators can enter the inspection well 6 for operation;

[0051] Step 2: Install the chain guide rail 1 in the detection well 6, the chain guide rail 1 includes a driving sprocket 14, a driven pulley 15 and a chain 16 matched therewith;

[0052] Step 3: Fix one or more suspension brackets 2 to the chain 16;

[0053] Step 4: Install the dredging and slag remover 3 on the suspension bracket 2, and adjust the lifting frame 23 on the suspension bracket 2 according to the pipe diameter and water level of the drainage pipe 8, so that the slag bucket 31 and the mud bucket 33 of the dredging and slag remover 3 are convenient for removing the floating slag and sludge in the drainage pipe 8;

[0054] Step 5: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the hanging bracket 2 with the silt remover 3 installed to the inside of the drainage pipe 8;

[0055] Step 6: The sludge collecting truck 4 is located on the ground 5 outside the inspection well 6;

[0056] Step 7: The drainage pipe 8 is flowing with water normally;

[0057] Operation phase:

[0058] Step 1: The motor 17 drives the driving sprocket 14 to rotate, and then drives the chain 16, so as to transport the suspension bracket 2 to the inside of the drainage pipe 8, and make the moving direction of the suspension bracket 2 in the drainage pipe 8 and the opening directions of the slag bucket 31 and the mud bucket 33 of the silt remover 3 opposite to the flow direction of the sewage in the drainage pipe;

[0059] Step 2: When the silt remover 3 moves relative to the sewage 7, the slag bucket 31 can remove the floating scum on the upper layer of the sewage 7, the filter screen 32 can filter out the suspended particles in the middle layer of the sewage 7, and the mud bucket 33 can remove the sludge in the lower layer of the sewage 7;

[0060] Step 3: The suspension bracket 2 is transported from the drainage pipe 8 to the outside of the inspection well 6 by the continuous rotation of the motor 17. At this time, the floating slag, suspended particles and sludge collected by the silt remover 3 are transferred to the vehicle sludge storage tank by the sludge suction and sludge collection vehicle 4;

[0061] Step 4: Keep the motor 17 rotating continuously, so as to transport the cleaned silt remover 3 back into the drainage pipe 8, and then repeat steps 2 and 3;

[0062] Maintenance phase:

[0063] Step 1: When the desilting and slag remover 3 is blocked or damaged, the driving sprocket 14 is rotated in the opposite direction by the motor 17, so that the desilting and slag remover 3 that needs to be repaired is transported to the top of the inspection well 6 along with the chain;

[0064] Step 2: Remove the silt remover 3 from the suspension bracket 2, and inspect and clean the silt remover 3;

[0065] Step three: re-fix the silt remover 3 on the hanging bracket 2, and rotate the driving sprocket 14 through the motor 17, so that the repaired silt remover 3 is transported to the drainage pipe 8 along the chain, and then carry out steps one to four of the operation stage.

[0066] The actual results of this example show that after the drainage pipe has been continuously operated by the silt remover for 12 hours, the floating scum, suspended particles and silt in the downstream inspection well are effectively cleaned, and the SS concentration of the sewage is reduced by 73.0% compared with the upstream inspection well.

[0067] The protection content of the present invention is not limited to the above embodiments. Without departing from the spirit and scope of the inventive concept, changes and advantages that can be thought of by those skilled in the art are included in the present invention and are protected by the attached claims.

Claims

1. A desilting and slag removal device for gravity flow sewage pipes, characterized in that A chain guide rail is installed in the inspection well and the drainage pipe, and the silt remover is nested in the suspension bracket. The suspension bracket is suspended on the chain guide rail and moves along the chain guide rail in the drainage pipe for in-situ silt removal of the drainage pipe. The sludge collected by the silt remover is removed on the ground outside the inspection well by a silt suction and mud collection vehicle; The hanging bracket includes a frame body and a hook connected to the frame body, the hook passes through the pin of the chain, so as to connect the frame body with the roller chain of the chain guide rail; the frame body includes an upper frame, a lifting frame arranged at the lower part of the upper frame, and a lower frame that can move up and down along the lifting frame, the upper frame is equipped with a slag bucket, and the lower frame is equipped with a mud bucket, and the height of the slag bucket and the mud bucket in the drainage pipe can be adjusted by the lifting frame, so that it is convenient to skim off the floating slag and shovel the silt; The number of the hooks is 2 or more to limit the axial displacement of the hanging bracket in the drainage pipe; The hanging bracket includes double-sided telescopic rods located on both sides of the bracket body. The double-sided telescopic rods are elastic telescopic rods with universal wheels at the ends. The telescopic direction is perpendicular to the axis of the drainage pipe and is used to limit the lateral displacement of the hanging bracket in the drainage pipe.

2. The desilting and slag removal device for a gravity flow sewage pipe according to claim 1, characterized in that: The chain guide rail includes a supporting frame, on which a driving sprocket, a driven pulley and a chain matching therewith are installed; the motor is connected to the driving sprocket to drive the driving sprocket to rotate, thereby driving the chain to move; the driven pulley is provided with a wheel groove, the chain groove of the chain is engaged with the gear teeth of the driving sprocket, and the outer side of the chain is engaged with the wheel groove of the driven pulley.

3. The desilting and slag removal device for a gravity flow sewage pipe according to claim 2, characterized in that: The driving sprocket is located at the top of the supporting frame, and the driven pulley is located at the bottom of the supporting frame; the tooth pitch of the driving sprocket is 10-15cm, and the tooth thickness is 7-9cm; the wheel groove width of the driven pulley is 5-8cm, and the wheel groove depth is 6-10cm; the wheel surfaces of the driving sprocket and the driven pulley are both located in the same plane as the axis of the drainage pipe.

4. The desilting and slag removal device for a gravity flow sewage pipe according to claim 1, characterized in that: A filter screen is installed above the mud bucket of the desilting and slag removing device, and the plane where the filter screen is located is perpendicular to the axis of the drainage pipe.

5. The desilting and slag removal device for a gravity flow sewage pipe according to claim 1, characterized in that: The silt pumping and mud collecting vehicle comprises a mud storage tank, a suction pump and a mud pumping pipe, and the mud pumping pipe is placed at the bottom of the downstream inspection well of the silt remover.

6. The desilting and slag removal device for a gravity flow sewage pipe according to claim 1, characterized in that: The upper part of the hook is a hook-shaped object, and the lower part is a connecting rod connected to the frame body. The connecting rod needs to have a certain length so that the hanging bracket can smoothly pass through the right-angle bend when moving with the chain.

7. The desilting and slag removal device for a gravity flow sewage pipe according to claim 2, characterized in that: The supporting frame and the side wall of the inspection well are provided with fixed nodes, and the fixed nodes are the connection points between the supporting frame and the side wall of the inspection well, and the connection method is welding, bonding or expansion screw fixing.

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