A piston type flow regulating valve trash device

Abstract

The utility model discloses a piston type flow regulating valve trash holding device, including the filter box mechanism of installing in the water inlet end position of piston type flow regulating valve, the filter box mechanism includes filter box, and filter box includes main box body and the sediment tank body of integrally formed in the bottom position of main box body, the filter box mechanism is equipped with the filter stop component in the assembly connection of main box body, and the filter stop component includes the filter structure of swing setting under the fluid push of the push grid structure, and the cooperation of push grid structure, push grid structure is used for the sundries in water body and pushes down to sink to the sediment tank body in. The above structure realizes the cooperation with fluid, can intercept sundries in water body simultaneously, and can solve the technical defects of sundries adhesion, block filter structure, through the cooperation with fluid, and push grid structure swings, and the sundries of adhesion pushes down and falls into the sediment tank body, guarantees that fluid passage is unobstructed.

Description

Technical Field

[0001] This utility model belongs to the technical field of piston-type flow regulating valves, and in particular relates to a piston-type flow regulating valve anti-pollution device. Background Technology

[0002] Piston-type flow control valves, as crucial components for linear flow regulation and pressure stabilization in pipeline systems, are widely used in water plants, power plants, and water diversion projects. They mainly consist of a valve body, valve shaft, squirrel cage, and crank-connecting rod mechanism. The structural principle is as follows: the valve drive device, through the crank-connecting rod mechanism, drives the squirrel cage inside the valve to move axially within the valve cavity, thereby changing the flow area at the valve body outlet to regulate flow and pressure. During operation, water flows through the flow control valve, colliding and dissipating energy at the outlet, reducing the kinetic energy of the water to almost zero, thus making the flow pattern in the downstream pipeline more stable and ensuring safer operation.

[0003] Piston-type flow control valves are mostly installed on large-diameter pipelines, such as for water transport in water conservancy projects. In actual operation, because the inlet of the piston-type flow control valve is large and the valve cavity volume is also large, debris in the water, such as tree branches and plastic bottles, is pumped into the valve cavity during the pumping process, causing valve malfunction.

[0004] Therefore, to solve this problem, existing technologies often involve installing filtration devices at the inlet of pipes or valves. The main structure of these filtration devices typically includes a filter screen. However, in practical use, it has been found that while the filter screen can indeed trap impurities, when high-pressure water carrying impurities passes through it, the impurities easily adhere to the screen, and as the amount of filtered impurities increases, the screen becomes clogged. This clogging is particularly frequent when pumping water from natural environments, such as reservoirs.

[0005] Therefore, in actual operation, the filter screen can only be replaced frequently. At the same time, during actual operation, when the filter screen is clogged, the huge water pressure at the moment the piston-type flow control valve opens will break up a large amount of debris attached to the filter screen. However, a large amount of debris fragments will still flow into the valve cavity, aggravating the accumulation of dirt inside the valve.

[0006] Unlike traditional valves, piston-type flow control valves regulate water flow through the piston movement of the squirrel cage. Therefore, once dirt accumulates severely inside the valve body, it will seriously affect the normal operation of the squirrel cage inside the valve body. Utility Model Content

[0007] Based on the above background, the purpose of this utility model is to provide a piston-type flow regulating valve device.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A piston-type flow regulating valve device includes a filter box mechanism installed at the inlet end of the piston-type flow regulating valve. The filter box mechanism includes a filter box, which includes a main box body and a sedimentation box body integrally formed at the bottom of the main box body.

[0010] The main housing is equipped with a filter assembly, which includes a swaying grid structure that can be swung under fluid propulsion and a filter structure that cooperates with the swaying grid structure.

[0011] The deflector structure is used to deflect debris in the water and sink it into the sedimentation tank.

[0012] Preferably, a sealing cover is installed at the bottom of the sedimentation tank;

[0013] The sealing cover includes a cover body that is threaded onto the sedimentation tank, and a drive handle is fixedly connected to the bottom of the cover body.

[0014] Preferably, the gate structure includes a frame-shaped gate rod, on which a plurality of longitudinally arranged longitudinal gate rods and transverse gate rods intersecting with the longitudinal gate rods are fixedly connected;

[0015] The ends of the longitudinal and transverse grid bars protrude from the frame-shaped grid bars.

[0016] Preferably, the filter assembly further includes brackets spaced apart on both sides, which are fixedly installed on the side wall of the filter box;

[0017] Connecting seats are fixedly connected to both sides of the frame-shaped grid rod, and a rotating shaft is fixedly connected to the connecting seat. The rotating shaft is rotatably connected to the side wall of the bracket.

[0018] Preferably, the filter structure includes a filter plate, which is fixedly connected to the support.

[0019] The filter plate is located downstream of the grid structure; the grid structure and the filter plate are spaced apart.

[0020] The filter plate has several long filter holes.

[0021] Preferably, the top and bottom of the bracket are integrally formed with protrusions facing inwards;

[0022] The protrusion is fastened to the filter plate by bolts.

[0023] Preferably, the filtration structure further includes a filter screen frame structure disposed downstream of the filter plate;

[0024] The filter frame structure includes a filter frame fastened to bolts, and a steel rod mesh is fixedly connected to the filter frame.

[0025] Preferably, the water inlet end of the main tank is connected to a water inlet pipe, and the water outlet end of the main tank is connected to the water inlet end of the piston-type flow regulating valve through a flange structure.

[0026] Preferably, a control valve is installed on the water inlet pipe.

[0027] This utility model has the following beneficial effects:

[0028] 1. The filter box structure effectively traps and filters impurities, allowing them to settle within the sedimentation tank. The sedimentation tank protrudes downwards, ensuring a large accumulation of impurities and reducing their entry into the piston-type flow control valve. This protects the valve. Simultaneously, the main tank serves as the primary fluid passage; the protruding sedimentation tank design ensures impurities fall into it, preventing blockage of the main fluid flow channel.

[0029] 2. During operation, the hinged grid structure swings under the impetus of the water flow (the grid structure is blocked by the filter plate below and will not swing indefinitely). During the swing, the grid structure tilts continuously. Especially when the water flow velocity is unstable, the fluid will randomly push the frame grid rod to swing freely. As a result, the debris attached to the grid structure will be continuously pushed off as the grid structure swings and tilts. In particular, the grid structure hits the filter plate at the front position under the impetus of the fluid. Under the impact, the debris attached to the grid structure is further pushed off.

[0030] In actual operation, water flow in pipelines cannot maintain a constant velocity. For example, when a piston-type flow control valve adjusts the water flow rate, the changing velocity as the fluid passes through the main tank and the position of the deflector structure will cause the deflector structure to tilt arbitrarily. The debris that is deflected will then fall into the sedimentation tank and settle.

[0031] Therefore, the grid structure of this utility model can also be used in conjunction with a piston-type flow regulating valve to adjust the flow rate, so as to realize that the fluid pushes the frame-shaped grid rod to swing and peel off the attached debris by changing the flow speed of the fluid.

[0032] 3. This utility model achieves the goal of intercepting and blocking debris through a grid structure that can cooperate with fluid. At the same time, it can repeatedly rotate under the push of fluid to peel off the attached and accumulated debris, thereby releasing a larger filtration space and protecting the filtration structure. Attached Figure Description

[0033] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the overall structure in an embodiment of the present utility model;

[0035] Figure 2 This is a schematic diagram of the filter box structure in an embodiment of the present invention;

[0036] Figure 3 This is a schematic diagram of the structure of the deflector installed inside the filter box in an embodiment of the present invention;

[0037] Figure 4 This is a schematic diagram of the gate structure in an embodiment of the present utility model;

[0038] Figure 5 This is a schematic diagram of the gate structure from another perspective in an embodiment of this utility model;

[0039] Figure 6 This is a schematic diagram of the filter structure in an embodiment of the present invention;

[0040] Figure 7 This is a schematic diagram of the structure of the support mounting filter plate in an embodiment of this utility model.

[0041] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0042] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0043] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0044] Furthermore, in this utility model, descriptions involving "first," "second," etc., are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0045] Example 1

[0046] like Figure 1-7 As shown, a piston-type flow regulating valve device includes a filter box mechanism 1 installed at the inlet end of a piston-type flow regulating valve 2. The filter box mechanism 1 includes a filter box, which includes a main box body 11 and a sedimentation box body 12 integrally formed at the bottom of the main box body 11. Filtered debris, such as tree branches, eventually settles at the bottom of the sedimentation box body 12. A sealing cover 14 is installed at the bottom of the sedimentation box body 12.

[0047] Specifically, the existing threaded sealing connection method is used. The sealing cover 14 includes a cover part that is threadedly connected to the sludge box 12 (the bottom of the sludge box 12 has a threaded sludge discharge port), and a drive handle is fixedly connected to the bottom of the cover part.

[0048] This method achieves both the interception and filtration of impurities, and the settling of impurities within the sedimentation tank 12. The sedimentation tank 12 is designed to protrude downwards, thus allowing a large amount of impurities to accumulate within it, reducing the likelihood of impurities entering the piston-type flow control valve 2. This protects the piston-type flow control valve 2. Simultaneously, as the main fluid channel, the protruding design of the sedimentation tank 12 ensures that impurities fall into it, preventing blockage of the main fluid channel.

[0049] To prevent a large amount of debris from adhering and accumulating on the filter structure, this utility model improves the traditional fixed structure filter device (such as a filter screen) by designing the filter functional component in a swing mode. Under the impetus of fluid, once the filter component swings, the attached and accumulated debris will be pushed and fall into the sediment box 12.

[0050] Specifically, a filter assembly 13 is assembled and connected inside the main housing 11. The filter assembly 13 includes a swaying grid structure 132 that can be swung under the push of fluid and a filter structure that cooperates with the sway grid structure 132.

[0051] The deflector structure 132 (located above the sedimentation tank 12) is used to deflect debris in the water into the sedimentation tank 12.

[0052] Example 2

[0053] like Figure 1-7 As shown, based on the structure of Embodiment 1, the above-mentioned grid structure 132 includes a frame-shaped grid rod 1321 (made of thickened 304 stainless steel rod welded to cope with fluid erosion). Several longitudinally arranged longitudinal grid rods 1322 and transverse grid rods 1323 interspersed with the longitudinal grid rods 1322 are welded to the frame-shaped grid rod 1321. The ends of the longitudinal grid rods 1322 and the transverse grid rods 1323 protrude from the frame-shaped grid rod 1321.

[0054] The horizontal grid bars 1323 and 1322 are welded to the frame-shaped grid bar 1321 to form a grid structure that intercepts larger debris such as tree branches. Then, the horizontal grid bars 1323 and 1322 are welded to the frame-shaped grid bar 1321 to form a mesh-like interception structure. The horizontal grid bars 1323 and 1322 protrude from the frame-shaped grid bar 1321 to increase the barrier surface area, and further enhance the effect of dislodging debris during the swinging of the grid structure 132.

[0055] Specifically, the filter assembly 13 also includes brackets 131 spaced apart on the left and right sides, and the brackets 131 are fixedly installed on the side wall of the filter box (main box 11) (such as being fastened to the left and right side walls inside the main box 11 by threaded connection in the existing manner).

[0056] Meanwhile, connecting seats 13212 are fixedly connected to the left and right sides of the frame-shaped grid rod 1321 respectively (the connecting seats 13212 are fixed by welding). A rotating shaft 13211 is fixedly connected to the connecting seat 13212. The rotating shaft 13211 is rotatably connected to the side wall of the bracket 131 (in the existing way, the side wall of the bracket 131 is opened with a shaft hole for rotatably connecting the rotating shaft).

[0057] During operation, driven by the water flow, the hinged grid structure 132 swings (the grid structure 132 is blocked by the filter plate below and will not swing indefinitely). During the swing, the grid structure 132 tilts continuously. Especially when the water flow velocity is unstable, the fluid will randomly push the frame-shaped grid rod 1321 to swing freely. As a result, the debris attached to the grid structure 132 will be continuously knocked off as the grid structure 132 swings and tilts. In particular, the grid structure 132 impacts the filter plate at the front position under the push of the fluid. Under the impact, the debris attached to the grid structure 132 is further knocked off.

[0058] In actual operation, water flow in pipelines cannot maintain a stable velocity. For example, when the piston-type flow regulating valve 2 adjusts the water flow velocity, the changing velocity of the fluid as it passes through the main tank 11 and the position of the deflector structure 132 will cause the deflector structure 132 to tilt arbitrarily. The debris that is deflected will then fall into the sedimentation tank 12 and settle.

[0059] Therefore, the grid structure 132 of this utility model can also be used in conjunction with the piston-type flow regulating valve 2 to adjust the flow rate, so as to realize that the fluid pushes the frame-shaped grid rod 1321 to swing and peel off the attached debris by changing the flow speed of the fluid.

[0060] Example 3

[0061] like Figure 1-7 As shown, in this embodiment, based on the structure of embodiment 2, since the grid structure 132 is mainly used to block large debris such as tree branches, in order to further block debris, the above-mentioned filter structure includes a filter plate 134 (made of 304 stainless steel plate, with several long filter holes on the filter plate 134), and the filter plate 134 is fixedly connected to the bracket 131.

[0062] Specifically, the filter plate 134 is located downstream (i.e., in front) of the grid structure 132; the grid structure 132 and the filter plate 134 are spaced apart (to provide a basis for the grid structure 132 to rotate slightly).

[0063] The filter plate 134 further traps some of the impurities.

[0064] Specifically, the top and bottom of the brackets 131 on the left and right sides are integrally formed with protrusions 1311 facing inward; the protrusions 1311 are fastened to the filter plate 134 by bolts.

[0065] Meanwhile, in order to increase the filtration effect, according to the existing method, the filtration structure also includes a filter screen frame structure 133 (i.e., the front position) located downstream of the filter plate 134; the filter screen frame structure 133 includes a filter screen frame fastened to bolts (i.e., the support 131 installs the filtration structure by bolts), and a steel rod mesh (the steel rod mesh is an existing grid-like steel mesh structure formed by welding steel rods) is fixedly connected to the filter screen frame.

[0066] The filter frame structure with smaller pore size enables further filtration of smaller debris.

[0067] Example 4

[0068] like Figure 1-7As shown, in this embodiment, based on the structure of embodiment 3, the water inlet end of the main tank 11 is connected to a water inlet pipe 111, and the water outlet end of the main tank 11 is connected to a water outlet pipe 112. The water outlet pipe 112 is connected to the water inlet end of the piston-type flow regulating valve 2 through a flange structure.

[0069] As is the case, a control valve (not shown in the figure), such as a gate valve, is installed on the inlet pipe 111.

[0070] During the periodic cleaning of the sludge discharge filter box, the control valve is closed (the piston-type flow regulating valve 2 is also closed), and the sealing cover 132 is unscrewed to clean the debris inside the sludge box 12. Furthermore, the filter plate 134 and the grate structure 132 are spaced apart, and debris adhering to the filter plate 134 can also be cleaned using tools such as hooks.

[0071] In actual operation, the sludge box 12 and the main box 11 can be designed to be detachable and separable, as is the case with the sludge box 12 and the main box 11 connected by threads. Specifically, the sludge box 12 has a large-diameter sludge inlet at the top, and flange rings are welded around the edges of the sludge inlet. Similarly, the main box 11 has a sludge outlet at the bottom, and flange rings are welded around the edges of the sludge outlet. The connection is achieved through a flange ring-bolt structure, which makes it detachable and allows the main box 11 to be fully exposed from the bottom, so that operators can easily clean and maintain the filter structure inside the main box 11.

[0072] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A piston-type flow regulating valve for intercepting contaminants, characterized in that, The filter box mechanism includes a filter box installed at the inlet of a piston-type flow regulating valve. The filter box mechanism includes a filter box, which includes a main box body and a sedimentation box body integrally formed at the bottom of the main box body. The main housing is equipped with a filter assembly, which includes a swaying grid structure that can be swung under fluid propulsion and a filter structure that cooperates with the swaying grid structure. The deflector structure is used to deflect debris in the water and sink it into the sedimentation tank.

2. The piston-type flow regulating valve debris interception device according to claim 1, characterized in that, The bottom of the sedimentation tank is equipped with a sealing cover; The sealing cover includes a cover body that is threaded onto the sedimentation tank, and a drive handle is fixedly connected to the bottom of the cover body.

3. The piston-type flow regulating valve debris-blocking device according to claim 1, characterized in that, The gate structure includes a frame-shaped gate rod, on which a plurality of longitudinally arranged longitudinal gate rods and transverse gate rods intersecting with the longitudinal gate rods are fixedly connected; The ends of the longitudinal and transverse grid bars protrude from the frame-shaped grid bars.

4. The piston-type flow regulating valve debris-blocking device according to claim 3, characterized in that, The filter assembly also includes brackets spaced apart on both sides, which are fixedly installed on the side wall of the filter box; Connecting seats are fixedly connected to both sides of the frame-shaped grid rod, and a rotating shaft is fixedly connected to the connecting seat. The rotating shaft is rotatably connected to the side wall of the bracket.

5. The piston-type flow regulating valve debris-blocking device according to claim 4, characterized in that, The filtration structure includes a filter plate, which is fixedly connected to the support. The filter plate is located downstream of the grid structure; the grid structure and the filter plate are spaced apart. The filter plate has several long filter holes.

6. The piston-type flow regulating valve debris-blocking device according to claim 5, characterized in that, The top and bottom of the bracket are integrally formed with protrusions facing inwards; The protrusion is fastened to the filter plate by bolts.

7. The piston-type flow regulating valve debris-blocking device according to claim 6, characterized in that, The filtration structure also includes a filter screen frame structure located downstream of the filter plate; The filter frame structure includes a filter frame fastened to bolts, and a steel rod mesh is fixedly connected to the filter frame.

8. The piston-type flow regulating valve debris interception device according to claim 1, characterized in that, The main tank is connected to a water inlet pipe at its inlet end, and the main tank is connected to the inlet end of a piston-type flow regulating valve via a flange structure.

9. The piston-type flow regulating valve debris-blocking device according to claim 8, characterized in that, A control valve is installed on the water inlet pipe.

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