Sludge discharge system at bottom of sedimentation tank
By setting up mud discharge devices and control devices at the bottom of the sedimentation tank, combined with a wire rope pulling mud scraper, orderly mud discharge of dead corners is achieved, and the problem of dead corner sludge accumulation formed by the wire rope mud scraper is solved, reducing production costs and ensuring water quality.
Patent Information
- Application Number
- CN202421684133.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-16
- Publication Date
- 2025-07-08
- Estimated Expiration
- 2034-07-16
AI Technical Summary
In the prior art, the wire rope pulling mud scraper forms a 1.5-meter-wide dead corner area at the bottom of the sedimentation tank, resulting in sludge accumulation, increasing manpower and material costs, and affecting water quality.
A mud discharge system at the bottom of the sedimentation tank is designed, including mud discharge device and control device. Using mud discharge pump and mud discharge pipe, the shell, mud discharge hole and trumpet are set, and the operation of the mud scraper is combined with the wire rope to pull the mud scraper to achieve orderly mud discharge in dead corner areas.
Effectively prevent sludge accumulation in blind spots, reduce the production costs of enterprises, ensure water quality, and solve the problem of regular drainage and dredging.
Smart Images
Figure CN223069138U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of water purification treatment, in particular to a sludge discharging system at the bottom of a sedimentation tank. Background Art
[0002] Generally, a wire rope traction sludge scraper is used at the bottom of a horizontal flow sedimentation tank in a water purification plant to clean the sludge deposited at the bottom of the sedimentation tank. However, the wire rope traction sludge scraper has a very big drawback. That is, when it reciprocates to scrape the sludge, a blind area will be formed at the end of its operation. That is to say, the end of its operation cannot reach the front end of the sedimentation tank, thus forming a dead corner area, and the width of this dead corner area is about 1.5 meters. Over time, the sludge will accumulate in the 1.5-meter-wide pool corner at the front end of the sedimentation tank, affecting the water quality. At this time, it is necessary to regularly drain the water in the entire sedimentation tank and manually clean the accumulated sludge, which consumes a large amount of manpower and material resources, greatly increasing the production cost and bringing great trouble to the enterprise. Content of the Utility Model
[0003] In order to solve the above problems existing in the prior art, the utility model provides a sludge discharging system at the bottom of a sedimentation tank. The technical problems to be solved by the utility model are realized through the following technical solutions:
[0004] A sludge discharging system at the bottom of a sedimentation tank includes a sludge discharging device and a control device. Among them, the sludge discharging device includes a sludge discharging pump and a sludge discharging pipe. A housing is arranged around the sludge discharging pump, and a chamber is formed between the housing and the pump body of the sludge discharging pump. Through holes are respectively opened in the top surface and the lower side of the side surface of the housing. The water outlet pipe of the sludge discharging pump passes through the through hole in the top surface, one end of the sludge discharging pipe is connected to the through hole in the lower side of the side surface, and the other end is in a closed state. The sludge discharging pipe is horizontally erected above one end of the bottom surface of the sedimentation tank, and sludge discharging holes are opened in the bottom surface of the sludge discharging pipe. The sludge discharging device is electrically connected to the control device and cleans and discharges the sludge at the bottom of the sedimentation tank under the control of the control device.
[0005] In a specific embodiment of the utility model, two sludge discharging pipes are provided, arranged in parallel from left to right and connected to the through hole in the lower side of the side surface of the housing through a Y-shaped joint.
[0006] In a specific embodiment of the utility model, the sludge discharging holes are long strip holes arranged at intervals on the bottom surface of the sludge discharging pipe.
[0007] The long strip holes gradually become larger from the connection end of the sludge discharging pipe to the closed end.
[0008] A flared opening is provided around the long strip hole, and the flared opening changes successively according to the size of the long strip hole. There is a gap between the flared opening and the bottom surface of the sedimentation tank, and the gap is 5 - 10 cm.
[0009] In a specific embodiment of the present utility model, the sludge discharge pump is arranged at the corner position of the bottom of the sedimentation tank, and the sludge discharge pipe extends along the width of the sedimentation tank.
[0010] In a specific embodiment of the present utility model, the connection between the housing and the water outlet pipe of the sludge discharge pump is sealed, and the connection between the housing and the sludge discharge pipe is sealed.
[0011] In a specific embodiment of the present utility model, a coupler is arranged at the bottom of the sludge discharge pump to ensure the sludge discharge power of the sludge discharge pump.
[0012] In a specific embodiment of the present utility model, the housing, the sludge discharge pipe, and the flared opening are all made of stainless steel products.
[0013] In a specific embodiment of the present utility model, the control device includes an electric control box and a travel switch, which are used to control the start and stop time of the sludge discharge device.
[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:
[0015] By setting the sludge discharge device and the control device, and through the effective cooperation with the wire rope traction sludge scraper, according to the preset start and stop time, the sludge discharge device discharges sludge orderly in the dead corner area at the bottom of the sedimentation tank, preventing the accumulation of sludge in the dead corner area. While ensuring the water quality, it also solves the problem that the sedimentation tank stops running due to regular drainage and silt cleaning, resulting in increased enterprise costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 is a structural cross-sectional view provided by the present utility model;
[0017] Figure 2 is a structural top view provided by the present utility model;
[0018] In the figure, 1 - sludge discharge pump; 2 - sludge discharge pipe; 3 - housing; 4 - sludge discharge hole; 5 - flared opening; 6 - water outlet pipe; 7 - chamber. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0019] The following further describes the present utility model in detail in conjunction with the specific embodiments, but the embodiments of the present utility model are not limited thereto.
[0020] As Figure 1As shown in the figure, a sludge discharge system at the bottom of a sedimentation tank includes a sludge discharge device and a control device. Among them, the sludge discharge device includes a sludge discharge pump 1 and a sludge discharge pipe 2. A housing 3 is arranged around the sludge discharge pump 1. A chamber 7 is formed between the housing 3 and the pump body of the sludge discharge pump 1. Through holes are respectively opened on the top surface and the lower part of the side surface of the housing 3. The water outlet pipe 6 of the sludge discharge pump 1 passes through the through hole on the top surface. One end of the sludge discharge pipe 2 is connected to the through hole at the lower part of the side surface, and the other end is in a closed state. The sludge discharge pipe 2 is horizontally erected above one end of the bottom surface of the sedimentation tank. Sludge discharge holes 4 are opened on the bottom surface of the sludge discharge pipe 2. The sludge discharge device is electrically connected to the control device and, under the control of the control device, clears and discharges the sludge at the bottom of the sedimentation tank.
[0021] Under normal circumstances, the sludge discharge pump 1 is directly placed in the sedimentation tank, and sewage is sucked in and discharged through the water inlet holes located around the pump body. This not only disperses the suction force of the entire sludge discharge pump 1 but also has a very small sludge suction range. By arranging the housing 3 around the pump body of the sludge discharge pump 1 and forming a chamber 7 between the housing 3 and the pump body, in a sealed state between the housing 3 and the water outlet pipe 6 of the sludge discharge pump 1, the entire suction force of the sludge discharge pump 1 is concentrated at the through hole opened at the lower part of the side surface of the housing 3. For the sludge discharge pipe 2 connected to this through hole, sludge discharge holes 4 are opened on the bottom surface of the sludge discharge pipe 2. At this time, the entire suction force of the sludge discharge pump 1 is transferred to the sludge discharge holes 4.
[0022] When the sludge discharge pump 1 is started, the suction force of the sludge discharge pump 1 will suck the sludge at the bottom of the tank through the sludge discharge holes 4, and then enter the chamber 7 between the housing 3 and the pump body through the sludge discharge pipe 2. When the sludge fills the entire chamber 7 and surrounds the pump body, the sludge will be discharged through the water inlet holes on the pump body.
[0023] As Figure 2 shown, in a specific embodiment of the present invention, two sludge discharge pipes 2 are provided, arranged in parallel from left to right and connected to the through holes at the lower part of the side surface of the housing 3 through Y-shaped joints.
[0024] Specifically, since the dead corner area at the bottom of the sedimentation tank is about 1.5 meters, if only one sludge discharge pipe 2 is used, the effect of completely clearing the sludge in the dead corner area cannot be achieved. Therefore, the number of sludge discharge pipes 2 can be multiple, preferably two. The diameter of the sludge discharge pipe 2 is preferably DN150. The two sludge discharge pipes 2 are arranged in parallel from left to right in the middle of the dead corner area and are tightly connected to the through holes at the lower part of the side surface of the housing 3 through a Y-shaped joint.
[0025] As Figure 2 shown, in a specific embodiment of the present invention, the sludge discharge holes 4 are long strip holes arranged discontinuously on the bottom surface of the sludge discharge pipe 2.
[0026] As an implementation method, the long strip holes gradually become larger from the connection end to the closed end of the sludge discharge pipe 2.
[0027] Specifically, the sludge discharge holes 4 of the present utility model are long strip holes arranged in a discontinuous manner on the bottom surface of the sludge discharge pipe 2. The reason for the discontinuous arrangement is that a connection point can be formed between every two sludge discharge holes 4. If the sludge discharge holes 4 are set as a long strip hole penetrating the entire bottom of the sludge discharge pipe 2, the entire sludge discharge pipe 2 will burst under the suction of the sludge pump 1 due to heavy pressure. However, setting the long strip holes in a discontinuous manner can increase the suction of the sludge discharge holes 4.
[0028] Moreover, the size of the long strip holes will gradually increase from the end connected to the sludge discharge pipe 2 and the housing 3 to the foremost end of the extension, that is, the closed end. Since the length of the sludge discharge pipe 2 is almost close to the width of the sedimentation tank, which can generally reach more than ten meters in general cases, such a length will cause the suction of the sludge pump 1 to be dispersed. The closer to the front end of the sludge discharge pipe 2, the more the suction attenuates. To solve this problem, the present utility model makes the sludge discharge holes 4 gradually larger. That is to say, although the suction becomes smaller towards the front end, the sludge discharge holes 4 become larger. In this way, the distribution problem of the overall suction of the sludge discharge pipe 2 is balanced, and the effect is very remarkable.
[0029] As Figure 2 shown, a flared opening 5 is provided around the long strip holes of the present utility model, and the flared opening 5 changes gradually according to the size of the long strip holes. There is a gap between the flared opening 5 and the bottom surface of the sedimentation tank, and the gap is 5 - 10 cm.
[0030] Specifically, a flared opening 5 is provided around each long strip hole, and the flared opening 5 changes according to the size of the long strip hole. That is to say, each long strip hole is surrounded by a flared guard plate. In this way, the suction generated from the long strip hole only sucks the sewage within the area of the flared opening 5, without dispersing the suction of the sludge suction holes, and the overall suction capacity of the sludge pump 1 is improved again; there is a certain gap between the flared opening 5 and the bottom surface of the sedimentation tank, and this gap is preferably 5 - 10 cm.
[0031] In a specific embodiment of the present utility model, the sludge pump 1 is arranged at the corner position at the bottom of the sedimentation tank, and the sludge discharge pipe 2 extends along the width of the sedimentation tank.
[0032] Specifically, the sludge pump 1 is arranged at a corner at the bottom of the sedimentation tank, that is, one end of the dead corner area, and the sludge discharge pipe 2 extends along the dead corner area to its other end. The length of the dead corner area is the width of the sedimentation tank, so the length of the sludge discharge pipe 2 is also close to the width of the sedimentation tank, which is equivalent to the sludge discharge pipe 2 extending along the width of the sedimentation tank.
[0033] In a specific embodiment of the present utility model, the connection between the housing 3 and the water outlet pipe 6 of the sludge pump 1 is sealed, and the connection between the housing 3 and the sludge discharge pipe 2 is sealed. In this way, it can ensure that the chamber 7 formed between the housing 3 and the sludge pump 1 is completely sealed, and the suction of the sludge pump 1 located inside the housing 3 is maximized.
[0034] In a specific embodiment of the present utility model, a coupler is provided at the bottom of the mud discharge pump 1 to ensure the mud discharge power of the mud discharge pump 1 and facilitate daily disassembly and maintenance.
[0035] In the specific embodiment of the utility model, the shell 3, the mud discharge pipe 2 and the bell mouth 5 are all made of stainless steel.
[0036] Specifically, since the mud discharge device of the present invention is located in a sewage pool all year round, strong and corrosion-resistant materials are required, so the shell 3, the mud discharge pipe 2 and the bell mouth 5 are all made of steel products, preferably stainless steel products.
[0037] In a specific embodiment of the present utility model, the control device includes an electric control box and a travel switch, which are used to control the start and stop time of the mud discharge device.
[0038] Specifically, the utility model is equipped with an electric control box, in which electrical components such as a conversion switch, an air circuit breaker, an AC contactor, a start / stop button, a short-circuit and overload protection device, and a signal lamp are arranged.
[0039] Control mode: Two control modes can be realized: "manual on machine" and "automatic on machine", which can be realized by operating the conversion switch on the control box. When the conversion switch is set to "manual on machine", the mud discharge device can be controlled separately through the manual button. This state is used during debugging and maintenance. When the conversion switch is set to "automatic on machine", the switch of the mud discharge device can be controlled by the travel switch connected to the wire rope traction scraper.
[0040] The working principle is: when the wire rope traction scraper at the bottom of the sedimentation tank works normally, it will reciprocate at the bottom of the sedimentation tank, first let the scraper run forward to the front end of the sedimentation tank, and then return to run. During the return operation, the sludge settled at the bottom of the sedimentation tank will be scraped into the sludge collecting tank set at the rear end of the sedimentation tank, and then discharged out of the tank through the sludge discharge pipe 2. However, due to the problem of the wire rope traction scraper itself, a 1.5-meter dead angle area will be left at the end when it runs forward, and the sludge discharge pipe 2 of the utility model is set in this dead angle area to suck the sludge scraped into the dead angle area when the wire rope traction scraper runs forward.
[0041] The control device of the utility model is electrically connected to the wire rope traction sludge scraper, and a travel switch is set. When the wire rope traction sludge scraper runs to the forefront of the sedimentation tank, that is, when the sludge is scraped into the dead corner area at the forefront, the wire rope traction sludge scraper will send a signal to the sludge discharging device through the travel switch. At this time, the sludge discharging device starts to work and begins to suck the sludge scraped into the dead corner area at the forefront by the sludge scraper. The working duration of the sludge discharging device is set by a time relay. When the sludge discharging device finishes working according to the set working duration, the sludge discharging device will also send a signal to the wire rope traction sludge scraper through the travel switch. At this time, the sludge scraper running at the forefront starts to return, thus completing a working cycle and starting a new round of work.
[0042] The above content is a further detailed description of the present utility model in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present utility model is only limited to these descriptions. For those of ordinary skill in the technical field to which the present utility model belongs, without departing from the concept of the present utility model, several simple deductions or substitutions can be made, and all should be regarded as belonging to the protection scope of the present utility model.
Claims
1. A sludge discharge system at the bottom of a sedimentation tank, characterized in that: It includes a sludge discharging device and a control device. Among them, the sludge discharging device includes a sludge discharging pump and a sludge discharging pipe. A housing is arranged around the sludge discharging pump. A chamber is formed between the housing and the pump body of the sludge discharging pump. Through holes are respectively opened below the top surface and the side surface of the housing. The water outlet pipe of the sludge discharging pump passes through the through hole on the top surface. One end of the sludge discharging pipe is connected to the through hole below the side surface, and the other end is in a closed state. The sludge discharging pipe is horizontally erected above one end of the bottom surface of the sedimentation tank. A sludge discharging hole is opened on the bottom surface of the sludge discharging pipe. The sludge discharging device is electrically connected to the control device and, under the control of the control device, clears and discharges the sludge at the bottom of the sedimentation tank.
2. The sludge discharging system at the bottom of the sedimentation tank according to claim 1, wherein: Two sludge discharging pipes are provided, arranged in parallel from left to right and connected to the through hole below the side surface of the housing through a Y-shaped joint.
3. The sludge discharging system at the bottom of the sedimentation tank according to claim 2, wherein: The sludge discharging holes are long holes arranged discontinuously on the bottom surface of the sludge discharging pipe.
4. The sludge discharge system at the bottom of the sedimentation tank according to claim 3, characterized in that: The long holes gradually become larger from the connection end of the sludge discharging pipe to the closed end.
5. The sludge discharging system at the bottom of the sedimentation tank according to claim 4, characterized in that: Flared mouths are arranged around the long holes, and the flared mouths change in sequence according to the sizes of the long holes. There is a gap between the flared mouths and the bottom surface of the sedimentation tank, and the gap is 5 - 10 cm.
6. The sludge discharge system at the bottom of the sedimentation tank according to claim 5, wherein: The sludge discharging pump is arranged at the corner position of the bottom of the sedimentation tank, and the sludge discharging pipe extends along the width of the sedimentation tank.
7. The sludge discharge system at the bottom of the sedimentation tank according to claim 6, characterized in that: The connection between the housing and the water outlet pipe of the sludge discharging pump is sealed, and the connection between the housing and the sludge discharging pipe is sealed.
8. The sludge discharging system at the bottom of the sedimentation tank according to claim 7, wherein: A coupler is arranged at the bottom of the sludge discharging pump to ensure the sludge discharging power of the sludge discharging pump.
9. The sludge discharging system at the bottom of the sedimentation tank according to claim 8, characterized in that: The materials of the housing, the sludge discharging pipe and the flared mouths are all stainless steel.
10. The sludge discharge system at the bottom of the sedimentation tank according to claim 9, characterized in that: The control device includes an electric control box and a travel switch, which are used to control the start and stop time of the sludge discharging device.