Drain valve refuse barrier purging device
By designing guide vanes and filter plates, combined with the waste collection chamber, the system achieves the interception and online cleaning of floating debris in the drain valve, solving the problem of drain valve blockage and improving the system's reliability and operating efficiency.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- THREE GORGES JINSHAJIANG CHUANYUN HYDROPOWER DEV CO LTD
- Filing Date
- 2025-08-28
- Publication Date
- 2026-07-24
AI Technical Summary
Existing drain valves are easily clogged by floating debris, leading to leaks, equipment vibration, or shutdowns. Traditional solutions are inefficient and cannot handle issues in real time.
The device employs a teardrop-shaped profile design and inclined arrangement of guide vanes, combined with filter plates and a waste collection chamber, to achieve active interception, separation, and online cleaning of floating debris. The guide vanes deflect the water flow into the waste collection chamber, the filter plates achieve solid-liquid separation, and the inspection cover enables convenient cleaning.
It effectively prevents floating debris from clogging the drainage system, ensures continuous and stable operation of the drainage system, reduces downtime, and improves equipment lifespan and maintenance convenience.
Smart Images
Figure CN224549325U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of drainage treatment technology, specifically relating to a drainage valve garbage blocking and removal device. Background Technology
[0002] In fields such as hydropower generation and industrial drainage, drain valves are key devices for controlling fluid discharge. However, during drainage, floating debris such as plastics, branches, and fibers often accompany the water flow. This debris can enter the valve body, easily causing blockages or incomplete closure, leading to problems such as leaks, equipment vibration, and even downtime for maintenance. Traditional solutions often rely on manual cleaning or mechanical backflushing, but these methods suffer from low efficiency, long downtime, and the inability to handle issues in real time.
[0003] In the prior art, Chinese utility model patent CN222759884U discloses a drainage device for a turbine spiral casing. This device prevents valve disc blockage by using high-pressure water to flush away debris around the drainage hole. However, it cannot prevent debris from entering the valve body and requires an additional water pump system, resulting in a complex structure and high energy consumption. Furthermore, it cannot effectively collect and process debris. Chinese invention patent CN111042091B provides a surface debris cleaning device that uses a turbine to generate a vortex that attracts and collects floating debris. However, this device is designed for surface debris cleaning in open water and cannot be directly integrated into drainage pipes or valve bodies. It also requires significant power and has limited applicability.
[0004] Therefore, there is an urgent need for a compact device that can be integrated into the drain valve, actively intercepts floating debris through dynamic flow guidance, and supports online removal, so as to fundamentally solve the problem of drain valve blockage. Utility Model Content
[0005] To address the aforementioned problems, this utility model provides a drain valve debris blocking and removal device and method. This device actively guides water flow and separates floating debris through the special structure and arrangement of the guide vanes, effectively intercepts debris using filter plates, and achieves centralized and online cleaning of floating debris through a debris collection chamber. Its compact structure allows for direct integration into drainage pipelines, enabling automatic blocking, separation, collection, and removal of floating debris, fundamentally solving the drain valve clogging problem and ensuring the continuous and stable operation of the drainage system.
[0006] This utility model provides a waste blocking and removal device for a drain valve, including a device body, a filter plate, and a guide vane. The device body has an inlet end and an outlet end on both sides along the X-axis. The filter plate divides the interior of the device body into a first region and a second region. The outlet end corresponds to the first region, and the inlet end corresponds to the second region. The second region is provided with a guide vane that can guide the water flow along the X-axis to deflect in the Z-axis direction. The cross-section of the guide vane is teardrop-shaped. The guide vane is inclined, and the arc-shaped bottom of the teardrop shape points obliquely downward to the inlet end, and the tip of the teardrop shape points obliquely upward to the filter plate. The second region and the corresponding part of the guide vane extend upward along the Z-axis to form a waste collection cavity.
[0007] Thanks to the above technical solutions, the guide vanes are designed with a teardrop-shaped profile and are set at an angle, which can effectively guide the direction of water flow. This allows floating objects in the water to be treated to be deflected upwards and enter the waste collection chamber under the guidance of the guide vanes, while reducing water flow resistance and cavitation. The filter plates are divided into a first zone and a second zone to achieve solid-liquid separation. The waste collection chamber is designed to facilitate the cleaning of collected floating objects and ensure the long-term stable operation of the drain valve.
[0008] Furthermore, the guide vane is a long strip structure, the guide vane is arranged along the Y-axis direction, and the two ends of the guide vane in the length direction are respectively connected to the inner wall of the device body.
[0009] Thanks to the above technical solution, the guide vane adopts a long strip structure and is fixed at both ends to the inner wall of the device body, which enhances the structural stability, ensures that the guide vane maintains a fixed posture under the impact of water flow, and at the same time makes the water flow form a uniform guiding effect, improving the separation efficiency of floating objects.
[0010] Furthermore, the filter plate forms an inclined angle α with the direction of the Z-axis, and the pointing line of the guide vane tip forms an inclined angle β with the surface of the filter plate.
[0011] Thanks to the above technical solutions, the inclined setting of the filter plate increases the filtration area and improves the filtration efficiency; the tip of the guide vane forms an inclined angle β with the surface of the filter plate, which optimizes the water flow guidance path, making it easier for floating objects to be flushed into the garbage collection chamber and avoids accumulation on the surface of the filter plate.
[0012] Furthermore, the guide vane forms an inclined angle θ with the direction of the X-axis, and the angle value of the inclined angle θ is between 15-30°.
[0013] By adopting the above technical solution, the tilt angle θ of the guide vane is controlled within the range of 15-30°, which ensures sufficient water flow deflection force to make the floating object move upward, while avoiding water flow energy loss caused by excessive angle, thus achieving the best balance between energy consumption and efficiency.
[0014] Furthermore, the filter plate has a filtration area larger than the water inlet area, and the filter plate has evenly distributed permeable holes.
[0015] Thanks to the above technical solutions, the filter plate's filtration area is larger than the inlet water area, which reduces the flow rate of water through the filter plate and decreases the risk of clogging; the evenly distributed permeable holes ensure uniform water flow, improving filtration efficiency and service life.
[0016] Furthermore, the axis of the water-permeable holes of the filter plate is set along the X-axis direction.
[0017] By adopting the above technical solution, setting the axis of the permeable hole along the X-axis can reduce water flow resistance, avoid water flow energy loss caused by the inclination of the channel, reduce the occurrence of cavitation, and improve drainage efficiency.
[0018] Furthermore, the device body is provided with an openable inspection cover one corresponding to the second area; the waste collection cavity is provided with an openable inspection cover two.
[0019] Thanks to the above technical solution, the double inspection cover facilitates equipment status inspection and waste removal. Inspection cover one can be used to inspect the internal condition of the second area and remove residual waste, while inspection cover two facilitates online cleaning of floating objects in the collection chamber, greatly improving maintenance convenience.
[0020] Furthermore, the device body is connected to a regulating valve at the water outlet end corresponding to the first area, and the diameter of the water-permeable holes of the filter plate is not greater than the minimum flow orifice diameter of the regulating valve.
[0021] By adopting the above technical solution, and limiting the diameter of the filter plate's permeable holes to no larger than the minimum flow orifice diameter of the downstream regulating valve, larger particles and floating debris that could damage the regulating valve can be effectively intercepted. This effectively prevents the risk of the nozzles being blocked or damaged from the source, greatly enhances the protection capability of key valve components, extends the overall service life of the equipment, and reduces system maintenance costs.
[0022] This utility model also provides a method for removing debris from a drain valve, which includes the following steps using the aforementioned debris removal device: Drainage connection steps: Connect the water inlet of the device body to the target equipment, and the target equipment discharges the water to be treated into the drain valve garbage blocking and removal device; Water treatment steps: The water to be treated enters the second area through the inlet of the device body. Under the guidance of the guide vanes, part of the water is deflected upward to form a deflected water flow into the garbage collection chamber, and the other part passes through the filter plate into the first area and flows out from the outlet of the first area. The floating garbage contained in the water to be treated is confined to the second area when passing through the filter plate. The floating garbage in the second area enters the garbage collection chamber under the action of the deflected water flow. Cleaning steps: When the amount of floating garbage in the garbage collection chamber reaches the collection threshold, open the garbage collection chamber and clean out the floating garbage inside.
[0023] Thanks to the above technical solution, continuous processing and online cleaning of waste in the drain valve are achieved through a three-step method. The water flow deflection effect formed by the guide vanes effectively separates and collects floating objects, avoiding the problem of easy clogging of traditional filters, and greatly improving the reliability and maintenance convenience of the drainage system.
[0024] Furthermore, the waste collection chamber is equipped with an openable inspection cover, and a valve is located at the bottom of the waste collection chamber to control the connection between the waste collection chamber and the second area. During the cleaning process, when the amount of floating waste in the waste collection chamber reaches the collection threshold, the valve is closed to cut off the connection between the waste collection chamber and the second area, the inspection cover is opened, and the floating waste in the waste collection chamber is cleaned online. After the cleaning is completed, the inspection cover is closed, and the valve is opened to reconnect the waste collection chamber with the second area. At this time, the waste collection chamber can continue to collect floating objects in the water to be treated.
[0025] Thanks to the above technical solution, the combined use of valves and inspection cover II enables online cleaning without shutting down the system, greatly improving the continuous operation capability of the equipment, reducing downtime for maintenance, and improving the overall operating efficiency of the drainage system.
[0026] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are: 1. This utility model effectively guides the direction of water flow through the teardrop-shaped cross-section design and inclined arrangement of the guide wing, causing floating objects to deflect upwards and enter the garbage collection cavity under the guidance effect, while significantly reducing the wave resistance and cavitation phenomenon of water flow.
[0027] 2. This utility model uses a filter plate to divide the inside of the device into two areas, achieving efficient solid-liquid separation. The filter plate has a larger filtration area than the water inlet area, and the water permeable holes are arranged with a horizontal axis, which reduces the risk of clogging and improves drainage efficiency.
[0028] 3. By setting up a garbage collection chamber and using an openable inspection cover, this utility model realizes the online cleaning function of floating objects, which greatly improves the convenience of equipment maintenance and continuous operation capability.
[0029] 4. This utility model optimizes the angle between the guide vanes and the filter plate to create a rotating effect in the water flow, effectively preventing floating objects from accumulating on the filter plate surface and ensuring long-term filtration performance.
[0030] 5. The drainage valve garbage blocking and removal method of this utility model realizes the organic combination of drainage treatment and garbage cleaning through a three-step method, which improves the reliability and operating efficiency of the drainage system.
[0031] 6. This utility model is particularly applicable to the drainage system of turbine spiral casing, which can effectively protect downstream equipment from garbage and extend the service life of the equipment. Attached Figure Description
[0032] Figure 1 This is a cross-sectional view of a waste blocking and removal device for a drain valve provided in an embodiment of this utility model; Figure 2 This is a front view of a drain valve garbage blocking and removal device provided in an embodiment of this utility model; Figure 3 This is a schematic diagram of the filter plate of a waste blocking and removal device for a drain valve provided in an embodiment of this utility model.
[0033] Explanation of reference numerals in the attached figures: 1-First zone; 2-Filter plate; 3-Guide wing; 4-Second zone; 5-Valve seat; 6-Valve plate; 7-Waste collection chamber; 8-Valve disc; 9-Inspection cover one; 10-Inspection cover two; 11-Water permeable hole. Detailed Implementation
[0034] The present invention will now be described in detail with reference to the accompanying drawings.
[0035] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.
[0036] Example 1 A drain valve garbage blocking and removal device, such as Figures 1-3As shown, the device includes a main body, a filter plate 2, and a guide vane 3. The main body has an inlet and an outlet on both sides along the X-axis. The filter plate 2 divides the interior of the main body into a first region 1 and a second region 4. The outlet corresponds to the first region 1, and the inlet corresponds to the second region 4. The second region 4 contains a guide vane 3 that can guide the water flow along the X-axis to deflect towards the Z-axis. The guide vane 3 has a teardrop-shaped cross-section and is inclined, with its arc-shaped bottom pointing downwards towards the inlet and its tip pointing upwards towards the filter plate 2. The corresponding area of the second region 4 and the guide vane 3 extends upwards along the Z-axis to form a waste collection chamber 7.
[0037] Specifically, this device is used to treat untreated water discharged from target equipment such as drainage pipes, water tanks, or sewage treatment facilities, effectively blocking and removing floating debris in the water. The device body is usually made of corrosion-resistant materials, and the inlet and outlet ends are equipped with flanges or threaded interfaces for easy connection to external pipelines; the filter plate 2 is fixed inside the device body, dividing the inside of the device body into a first area 1 and a second area 4. By setting the filter plate 2, floating debris can be blocked from entering the first area 1, thereby protecting the equipment connected to the outlet end; the teardrop-shaped profile and inclined design of the guide vane 3 can optimize the hydrodynamics, so that the water flow generates an upward deflection component when it comes into contact with the guide vane 3, thereby carrying the floating objects towards the debris collection chamber 7.
[0038] Specifically, the water to be treated, carrying floating debris, flows into the second region 4 from the inlet along the X-axis. The water flow first impacts the teardrop-shaped arc-shaped bottom of the guide vane 3. Due to the teardrop-shaped design and specific tilt angle of the guide vane 3, the water flows close to its surface. According to the principles of fluid dynamics, the water flow direction will be deflected, creating an upward deflection and diversion, which carries the floating debris towards the waste collection chamber 7. At the same time, another part of the water flow directly or indirectly rushes towards the filter plate 2. The water and the fine particles in it pass through the filter plate 2 into the first region 1 and are eventually discharged from the outlet. The floating debris is intercepted by the filter plate 2 in the second region 4 and cannot pass through the filter plate 2. At this time, the deflection and diversion of the guide vane 3 carries the floating debris gathered near the filter plate 2 and actively pushes it upward into the waste collection chamber 7.
[0039] Preferably, the second region 4 is connected to the waste collection chamber 7 via a valve, which can be used to isolate the waste collection chamber 7 for cleaning.
[0040] Preferably, the valve consists of a valve seat 5, a valve plate 6, and a valve disc 8. The valve seat 5 is fixed at the connection between the waste collection chamber 7 and the second area 4. The valve plate 6 is operated manually or electrically via the valve disc 8 to control the connection status. When closed, the valve effectively isolates the waste collection chamber 7, preventing water backflow.
[0041] The guide vane 3 is a long strip structure, arranged along the Y-axis, and the two ends of the guide vane 3 along its length are respectively connected to the inner wall of the device body.
[0042] Specifically, the guide vane 3 extends across the entire Y-axis of the device body, ensuring that the water flow is uniformly deflected across the entire cross-section, avoiding dead zones or eddies. The guide vane 3 can be fixed to the inner wall of the device body by welding or bolting, and its length matches the internal width of the device body.
[0043] The filter plate 2 forms an inclined angle α with the direction of the Z-axis, and the pointing line of the tip of the guide vane 3 forms an inclined angle β with the surface of the filter plate 2.
[0044] Specifically, the tilt angle α is preferably between 30-60°, which helps floating debris to accumulate on the surface of the filter plate 2 and be easily carried away by the water flow; the tilt angle β is preferably between 10-20°, ensuring that the tip of the guide vane 3 points towards the upper area of the filter plate 2, guiding the deflected water flow to impact the surface of the filter plate 2, and enhancing the debris removal effect. The angles α and β can be achieved by designing the installation angle of the filter plate 2 and the tilt angle of the guide vane 3.
[0045] The guide vane 3 forms an inclined angle θ with the direction of the X-axis, and the angle value of the inclined angle θ is between 15-30°.
[0046] Specifically, this angle range has been verified through fluid dynamics simulations and experiments, enabling effective upward deflection under low water flow resistance. The angle θ can be set by adjusting the installation position of the guide vane 3, for example, via a bracket or adjustable connector.
[0047] The filter plate 2 has a filtration area larger than the inlet area of the inlet end, and the filter plate 2 has evenly distributed permeable holes 11.
[0048] Specifically, the filtration area is at least 1.5 times the inlet area, reducing the risk of clogging of the filter plate 2 and ensuring smooth water flow. The diameter of the permeable holes 11 is preferably between 5-15 mm, and the hole spacing is 1.5-2 times the hole diameter, evenly distributed to maintain filtration efficiency.
[0049] The axis of the water-permeable holes 11 of the filter plate 2 is set along the X-axis direction.
[0050] Specifically, the axis of the permeable hole 11 is parallel to the X-axis direction, which reduces the resistance when water flows through the filter plate 2 and prevents debris from getting stuck in the hole. The permeable hole 11 can be formed by stamping or drilling.
[0051] The device body is provided with an openable inspection cover 9 at the second area 4; the waste collection cavity is provided with an openable inspection cover 10.
[0052] Specifically, inspection cover 9 is hinged or detachably mounted to the device body for maintenance or cleaning in the second area 4; inspection cover 10 is located on the side or top of the waste collection chamber 7 for easy opening and cleaning of the collected waste. Both inspection covers 9 and 10 are equipped with sealing rings to ensure waterproofing; both inspection covers 9 and 10 are equipped with transparent observation windows for online observation of the equipment status and waste collection.
[0053] The device body is connected to a regulating valve at the water outlet end of the first region 1, and the diameter of the water-permeable hole 11 of the filter plate 2 is not greater than the minimum flow orifice diameter of the regulating valve.
[0054] Specifically, the outlet end of the device body corresponding to the first region 1 is connected to the inlet end of a regulating valve by means of flange or welding. The diameter of the water permeable hole 11 of the filter plate 2 is set to be no larger than the minimum flow hole diameter of the regulating valve connected downstream, so as to fundamentally avoid the regulating valve from failing due to impurities.
[0055] Preferably, the regulating valve can be a collision energy dissipation regulating valve, a pressure reducing valve, a flow regulating valve, or other valves that need to prevent debris from clogging the system.
[0056] Example 2 A method for removing debris from a drain valve, applicable to the aforementioned debris removal device for drain valves, includes the following steps: Drainage connection steps: Connect the water inlet of the device body to the target equipment, and the target equipment discharges the water to be treated into the drain valve garbage blocking and removal device; Specifically, the target equipment is the turbine spiral casing drain pipe.
[0057] Specifically, a seal is ensured by connecting pipes, and water flows into the inlet end along the X-axis direction.
[0058] Water treatment steps: The water to be treated enters the second area 4 through the inlet of the device body. Under the guidance of the guide vane 3, part of the water is deflected upward to form a deflected water flow into the garbage collection chamber 7, and the other part passes through the filter plate 2 into the first area 1 and flows out from the outlet of the first area 1. The floating garbage contained in the water to be treated is confined to the second area 4 when passing through the filter plate 2. The floating garbage in the second area 4 enters the garbage collection chamber 7 under the action of the deflected water flow. Specifically, the inclined setting and teardrop-shaped profile design of the guide vane 3 accelerate the water flow and deflect it upward, carrying floating objects upward; the filter plate 2 blocks the floating objects, while the water flow enters the first area 1 through the water permeable hole 11, realizing solid-liquid separation.
[0059] Cleaning steps: When the amount of floating garbage in the garbage collection chamber 7 reaches the collection threshold, open the garbage collection chamber 7 and clean the floating garbage inside.
[0060] Specifically, the collection threshold can be set based on the amount of waste accumulated or the time interval, for example, by monitoring the collection threshold through a liquid level sensor or a timer.
[0061] Preferably, the waste collection chamber 7 is equipped with an openable inspection cover 10, and a valve is located at the bottom of the waste collection chamber 7 to control the connection between the waste collection chamber 7 and the second area 4. During the cleaning process, when the amount of floating waste in the waste collection chamber 7 reaches a collection threshold, the valve is closed to cut off the connection between the waste collection chamber 7 and the second area 4, the inspection cover 10 is opened, and the floating waste in the waste collection chamber 7 is cleaned online. After cleaning, the inspection cover 10 is closed, and the valve is opened to reconnect the waste collection chamber 7 and the second area 4. At this time, the waste collection chamber 7 can continue to collect floating debris from the water to be treated. This method achieves non-stop cleaning, improving the continuous operation efficiency of the system.
[0062] This document uses specific embodiments to illustrate the principles and implementation methods of this utility model. The descriptions of the embodiments above are only intended to help understand the method and core ideas of this utility model. It should be noted that those skilled in the art can make various improvements and modifications to this utility model without departing from its principles, and these improvements and modifications also fall within the protection scope of the claims of this utility model.
[0063] In the description of this utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the utility model product is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0064] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
Claims
1. A drain valve garbage blocking and removal device, characterized in that, The device includes a main body, a filter plate, and a guide vane. The main body has an inlet and an outlet on both sides along the X-axis. The filter plate divides the interior of the main body into a first region and a second region. The outlet corresponds to the first region, and the inlet corresponds to the second region. The second region has a guide vane that can guide the water flow along the X-axis to deflect in the Z-axis direction. The guide vane has a teardrop-shaped cross-section and is inclined. The bottom of the teardrop shape points downwards towards the inlet, and the tip of the teardrop shape points upwards towards the filter plate. The second region, corresponding to the guide vane, extends upwards along the Z-axis to form a waste collection chamber.
2. The waste blocking and removal device for a drain valve according to claim 1, characterized in that, The guide vane is a long strip structure, the guide vane is arranged along the Y-axis, and the two ends of the guide vane in the length direction are respectively connected to the inner wall of the device body.
3. The waste blocking and removal device for a drain valve according to claim 1, characterized in that, The filter plate forms an inclined angle α with the direction of the Z-axis, and the pointing line of the guide vane tip forms an inclined angle β with the surface of the filter plate.
4. A waste blocking and removal device for a drain valve according to claim 1, characterized in that, The guide vane forms an inclined angle θ with the X-axis, and the angle value of the inclined angle θ is between 15-30°.
5. A waste blocking and removal device for a drain valve according to claim 1, characterized in that, The filter plate has a filtration area larger than the inlet area of the inlet end, and the filter plate has evenly distributed permeable holes.
6. A waste blocking and removal device for a drain valve according to claim 5, characterized in that, The axis of the water-permeable holes of the filter plate is set along the X-axis direction.
7. A waste blocking and removal device for a drain valve according to claim 1, characterized in that, The device body is provided with an openable inspection cover one corresponding to the second area; the waste collection cavity is provided with an openable inspection cover two.
8. A waste blocking and removal device for a drain valve according to claim 1, characterized in that, The outlet end of the device body is connected to the regulating valve, and the diameter of the water-permeable holes of the filter plate is not greater than the minimum flow orifice diameter of the regulating valve.
9. A waste blocking and removal device for a drain valve according to claim 7, characterized in that, Both inspection cover one and inspection cover two are equipped with transparent observation windows.
10. A waste blocking and removal device for a drain valve according to claim 1, characterized in that, A valve is installed at the bottom of the waste collection chamber.