Quick opening and closing type gate valve applied to inclined plate sedimentation tank

Abstract

A rapid opening and closing type gate valve applied to an inclined plate sedimentation tank comprises a gate plate, the gate plate is arranged in a rectangular and vertically-arranged channel steel frame, the channel steel frame is fixedly arranged at an opening of the inclined plate sedimentation tank in a welded mode through embedded iron, and the size of the channel steel frame is equal to the length and width of the opening. Frame grooves are formed in the left side frame and the right side frame of the channel steel frame; two lifting holes are formed in the center of the upper portion of the gate plate, and the gate plate is connected with a lifting mechanism assembly arranged on the upper portion of the gate plate in the connecting mode that bolts are screwed into the lifting holes. The lifting mechanism assembly lifts or descends the flashboard upwards along the frame grooves in the left side and the right side of the channel steel frame, and the opening of the inclined plate sedimentation tank is opened or closed. According to the utility model, the flashboard of the inclined plate sedimentation tank can be quickly opened or closed, and the whole process only needs about 20 seconds, so that the labor efficiency is improved; components are convenient to install and replace, the cost of spare parts is low, the production cost is saved, and the application range is wide.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment, specifically to a gate valve that can be quickly opened and closed for isolation in an inclined plate sedimentation tank used in the wastewater treatment process of iron and steel metallurgy. Background Technology

[0002] Currently, wastewater / sludge treatment systems are installed in various steel and metallurgical production enterprises. In these systems, inclined plate sedimentation tanks, which have a small footprint, high sedimentation efficiency, and short retention time, are frequently used, especially in steelmaking RH systems. During use, the wastewater or sludge to be treated moves and separates from the sedimentation sludge in the shallow sedimentation layer of the inclined plate sedimentation tank. The inclined plate sedimentation tank utilizes the principle of "shallow sedimentation" to shorten the particle settling distance, thereby shortening the sedimentation time and increasing the sedimentation area of ​​the tank, thus improving the treatment efficiency.

[0003] In practical applications, steel metallurgical production enterprises usually configure several sets of inclined plate equipment and dozens of inclined plate sedimentation tanks. These inclined plate sedimentation tanks require a large amount of daily maintenance, and whenever the tarpaulin, sludge conveyor and sludge discharge pump inside the inclined plate malfunctions and needs to be repaired, the sedimentation tank must be isolated in time through the inlet gate valve.

[0004] In steelmaking RH systems, the inclined plate sedimentation tank is a crucial component. Problems in this area can lead to poor water quality, causing blockages in the cooling tower's water distribution pipes and nozzles, thus affecting the cooling tower's water supply efficiency, resulting in uneven water distribution, high water temperature, and ultimately impacting production. Inclined plate sedimentation tanks are exposed to the elements, and due to the high inlet water temperature and the addition of PAC coagulant, the valve plates and seals are prone to corrosion. Furthermore, with long service life and equipment aging, the maintenance workload and frequency of these sedimentation tanks are constantly increasing, necessitating rapid and effective isolation during maintenance.

[0005] The gate valves used in existing inclined plate sedimentation tanks are all of the rising stem type. The valve stem is moved forward, backward, raised, or lowered by turning a handwheel, opening or closing the valve plate connected to the stem. The forward, backward, raised, or lowered functions of the valve stem rely on threaded transmission on its stem. This threaded transmission method requires a large number of rotations for opening and closing, resulting in low efficiency. As mentioned earlier, inclined plate sedimentation tanks are exposed to the elements, and years of exposure to wind and sun have caused severe corrosion of the valve stem threads. Furthermore, the gate valves are made of heavy carbon steel, making it difficult to close quickly. Closing may take nearly half an hour, and there are even instances where the valve stem cannot be turned at all. If a sludge pump malfunctions and the sedimentation tank needs to be isolated, the gate valve's inability to close quickly leads to sludge accumulation in the sedimentation tank due to prolonged openness, affecting equipment stability. This problem of inconvenient maintenance, low labor efficiency, and even production disruption has long plagued the industry.

[0006] In summary, there is an urgent need for a new type of gate valve for inclined plate sedimentation tanks that can solve the various problems under existing technology. Utility Model Content

[0007] To address the problems of existing gate valves, this invention considers the practicality, convenience, and labor efficiency of gate valves in inclined plate sedimentation tanks, while also addressing the issues of time-consuming, labor-intensive, and inefficient gate valve closure in inclined plate sedimentation tanks. To ensure production, reduce costs and increase efficiency, and minimize safety risks associated with manual valve operation, this invention provides a fast-opening and closing gate valve for inclined plate sedimentation tanks. Unlike existing transmission methods, this invention enables efficient and rapid opening and closing.

[0008] The present invention relates to a quick-opening and closing gate valve for use in inclined plate sedimentation tanks, the specific structure of which is described below:

[0009] A quick-opening and closing gate valve for use in inclined plate sedimentation tanks, comprising a gate, characterized in that:

[0010] The gate is placed in a rectangular and vertically arranged channel steel frame. The channel steel frame is fixedly installed at the opening of the inclined plate sedimentation tank by welding with pre-embedded iron. The size of the channel steel frame is equal to the length and width of the opening, and the left and right sides of the channel steel frame are provided with frame grooves.

[0011] The gate has two lifting holes at the center of its upper part, and the gate is connected to a lifting mechanism assembly located on its upper part by screwing bolts into the lifting holes.

[0012] The lifting mechanism assembly lifts or lowers the gate plate along the frame grooves on both sides of the channel steel frame, opening or closing the opening of the inclined plate sedimentation tank.

[0013] According to the present invention, a quick-opening and closing gate valve applied to an inclined plate sedimentation tank is characterized in that the lifting mechanism assembly includes a connecting valve stem, a valve plate opening positioning device, a lifting lever, and a lever support. The connecting valve stem is a flat iron component, vertically positioned in the middle of a channel steel frame. Its lower part is connected to two lifting holes of the gate plate via bolts, while its upper part passes through the top center opening of the channel steel frame and connects to the lifting lever positioned on one side of the channel steel frame. One-third of the lifting lever's length is supported and connected by a lever support positioned on the side of the channel steel frame. The valve plate opening positioning device is installed at the top center opening through which the connecting valve stem passes, locking and fixing the connecting valve stem when it is lifted or lowered to a designated position to prevent further descent, thus controlling the opening and closing degree of the gate plate.

[0014] According to this utility model, a quick-opening and closing gate valve applied to an inclined plate sedimentation tank is characterized in that the connecting valve stem has valve plate opening positioning holes. Specifically, the positioning holes are opened on the vertical center line of the connecting valve stem and are designed with equal spacing. The uppermost positioning hole is connected to the lifting arm lever by bolt and nut connection. The valve plate opening positioning device includes an angle steel positioning seat, a positioning long bolt and a positioning nut. The angle steel positioning seat is welded and fixed to the top middle opening of the channel steel frame. When the connecting valve stem is raised or lowered to the designated position at this location, the positioning long bolt passes laterally through the angle steel positioning seat and the positioning hole and is screwed and fixed by the positioning nut. That is, the valve plate opening positioning device locks and fixes the connecting valve stem and the gate.

[0015] According to this utility model, a quick-opening and closing gate valve applied to an inclined plate sedimentation tank is characterized in that, when the lifting arm lever is applied clockwise, it works with the lever bracket to lift the connecting valve rod connected to it upwards, causing the gate plate to be lifted upwards along the frame grooves on both sides of the channel steel frame. When it reaches the designated position, the valve plate opening positioning device locks and fixes the gate plate, opening the inclined plate sedimentation tank; when the lifting arm lever is applied counterclockwise, the connecting valve rod connected to it descends, causing the gate plate to descend along the frame grooves on both sides of the channel steel frame. When it reaches the designated position, the valve plate opening positioning device locks and fixes the gate plate, closing and isolating the inclined plate sedimentation tank.

[0016] According to the present invention, a quick-opening and closing gate valve applied to an inclined plate sedimentation tank is characterized in that the two sides and the bottom of the gate are wrapped with fluororubber sealing plates, which are fixed by bolts.

[0017] The purpose of this design is to install fluororubber sealing plates on both sides and the bottom edge of the gate to further enhance the sealing effect of the gate on the opening of the inclined plate sedimentation tank. The fluororubber sealing plates are fixed with bolts, making later maintenance and replacement very convenient.

[0018] According to the present invention, a quick-opening and closing gate valve applied to an inclined plate sedimentation tank is characterized in that the gate is vertically welded with positioning angle steels of equal length on its back side near the two sides, and the thickness of the positioning angle steel plus the thickness of the gate itself is equal to the width of the frame grooves on the left and right sides of the channel steel frame.

[0019] The purpose of this design is to weld equal-length positioning angle steels to the back of the gate near both sides, so that the gate will not shake when it is pulled up and down by the lifting mechanism within the frame grooves on the left and right sides of the channel steel frame, thus improving the stability of the device itself. The positioning angle steels need to be treated for corrosion prevention.

[0020] The following beneficial effects are achieved by using a quick-opening and closing gate valve of this invention applied to an inclined plate sedimentation tank:

[0021] 1. This utility model provides a quick-opening and closing gate valve for inclined plate sedimentation tanks, which can quickly open or close the gate of the inclined plate sedimentation tank in about 20 seconds. It is fast and labor-saving, and greatly improves labor efficiency compared with the prior art.

[0022] 2. The present invention provides a quick-opening and closing gate valve for use in inclined plate sedimentation tanks. The components are easy to install and replace, and the spare parts are inexpensive, which greatly saves production costs.

[0023] 3. The present invention provides a quick-opening and closing gate valve for use in inclined plate sedimentation tanks, which has a wide range of applications and can be used in various occasions where quick closing or opening is required. Attached Figure Description

[0024] Figure 1 This is a schematic diagram of the specific structure of a quick-opening and closing gate valve applied to an inclined plate sedimentation tank according to the present invention.

[0025] Figure 2 This is a schematic diagram of the specific structure of the gate of a quick-opening and closing gate valve applied to an inclined plate sedimentation tank according to the present invention.

[0026] Figure 3 This invention relates to a quick-opening and closing gate valve for use in inclined plate sedimentation tanks.

[0027] In the diagram: 1-gate, 1a-lifting hole, 1b-fluororubber sealing plate, 1c-positioning angle steel 1c, 2-channel steel frame, 2a-frame groove, A-lifting mechanism assembly, A1-connecting valve stem, A1a-positioning eye hole, A2-valve plate opening positioning device, A2a-angle steel positioning seat, A2b-positioning long bolt, A2c-positioning nut, A3-lifting lever arm, A4-lever bracket. Detailed Implementation

[0028] The following description, in conjunction with the accompanying drawings and embodiments, further describes the technical means, creative features, objectives, and effects of a quick-opening and closing gate valve applied to an inclined plate sedimentation tank according to this utility model.

[0029] Example

[0030] like Figures 1-3 As shown, a quick-opening and closing gate valve for use in an inclined plate sedimentation tank includes a gate 1, which is placed in a rectangular and vertically arranged channel steel frame 2. The channel steel frame is fixedly installed at the opening of the inclined plate sedimentation tank by welding with pre-embedded iron. The size of the channel steel frame is equal to the length and width of the opening, and the left and right sides of the channel steel frame are provided with frame grooves 2a.

[0031] Two lifting holes 1a are provided at the center of the upper part of the gate plate. The gate plate is connected to a lifting mechanism assembly A set on the upper part of the gate plate by screwing bolts into the lifting holes.

[0032] The lifting mechanism component A lifts or lowers the gate plate 1 along the frame grooves 2a on both sides of the channel steel frame 2, thereby opening or closing the opening of the inclined plate sedimentation tank.

[0033] The lifting mechanism component A includes a connecting valve stem A1, a valve plate opening positioning device A2, a lifting lever A3, and a lever support A4. The connecting valve stem is a flat iron component, vertically positioned in the middle of the channel steel frame. Its lower part is connected to the two lifting holes 1a of the gate plate 1 by bolts, while its upper part passes through the top middle opening of the channel steel frame and connects to the lifting lever located on one side of the channel steel frame. One-third of the lifting lever is supported and connected by a lever support located on the side of the channel steel frame. The valve plate opening positioning device is installed at the top middle opening where the connecting valve stem passes through the channel steel frame. When the connecting valve stem is lifted or lowered to the designated position, it is locked and fixed to prevent further descent, thus controlling the opening and closing degree of the gate plate.

[0034] In this embodiment, the gate is made of 6mm thick patterned steel plate, the connecting valve stem is made of 40mm wide galvanized flat iron, and the lifting lever is made of 6-point galvanized pipe (25mm diameter).

[0035] like Figure 3As shown, the connecting valve stem A1 has a valve plate opening positioning eye hole A1a. This positioning eye hole is specifically designed with equal spacing and is located on the vertical center line of the connecting valve stem. The uppermost positioning eye hole is connected to the lifting arm lever A3 by bolt and nut. The valve plate opening positioning device A2 includes an angle steel positioning seat A2a, a positioning long bolt A2b, and a positioning nut A2c. The angle steel positioning seat is welded and fixed to the top middle opening of the channel steel frame 2. When the connecting valve stem is raised or lowered to the designated position at this location, the positioning long bolt passes laterally through the angle steel positioning seat and the positioning eye hole and is screwed and fixed by the positioning nut. That is, the valve plate opening positioning device locks and fixes the connecting valve stem and the gate 1.

[0036] In implementation, the lifting lever A3 applies force clockwise, which, together with the lever bracket A4, lifts the connecting valve rod A1 connected to it upwards, causing the gate plate 1 to rise along the frame grooves 2a on both sides of the channel steel frame 2. When it reaches the designated position, the valve plate opening positioning device A2 locks and fixes the gate plate, opening the inclined plate sedimentation tank. Conversely, when the lifting lever applies force counterclockwise, the connecting valve rod connected to it descends, causing the gate plate to fall along the frame grooves on both sides of the channel steel frame. When it reaches the designated position, the valve plate opening positioning device locks and fixes the gate plate, sealing and isolating the inclined plate sedimentation tank.

[0037] The two sides and bottom of the gate 1 are all wrapped with fluororubber sealing plates 1b, which are fixed by bolts.

[0038] The gate 1 has vertically welded positioning angle steels 1c of equal length on its back near the two sides. The thickness of the positioning angle steel plus the thickness of the gate itself is equal to the width of the frame grooves 2a on the left and right sides of the channel steel frame 2.

[0039] This invention relates to a quick-opening and closing gate valve for inclined plate sedimentation tanks. It can rapidly open or close the gate of the sedimentation tank. Field testing confirmed that the entire process takes only about 20 seconds, making it fast, labor-saving, and significantly improving labor efficiency compared to existing technologies. Furthermore, the valve's components are easy to install and replace, and spare parts are inexpensive, greatly reducing production costs. Finally, this quick-opening and closing gate valve has a wide range of applications and can be used in various situations requiring rapid opening or closing.

[0040] However, those skilled in the art should recognize that the above embodiments are only used to illustrate this application and are not intended to limit this application. Any changes or modifications to the above embodiments within the spirit and essence of this application will fall within the scope of the claims of this application.

Claims

1. A quick-opening and closing gate valve for use in inclined plate sedimentation tanks, comprising a gate (1), characterized in that: The gate (1) is placed in a rectangular and vertically arranged channel steel frame (2). The channel steel frame is fixedly installed at the opening of the inclined plate sedimentation tank by welding with pre-embedded iron. The size of the channel steel frame is equal to the length and width of the opening, and the left and right sides of the channel steel frame are provided with frame grooves (2a). The gate (1) has two lifting holes (1a) at the center of its upper part. The gate is connected to a lifting mechanism assembly (A) located on its upper part by screwing bolts into the lifting holes. The lifting mechanism assembly (A) lifts or lowers the gate (1) along the frame grooves (2a) on the left and right sides of the channel steel frame (2), opening or closing the opening of the inclined plate sedimentation tank. The lifting mechanism assembly (A) includes a connecting valve stem (A1), a valve plate opening positioning device (A2), a lifting lever (A3), and a lever bracket (A4). The connecting valve stem is a flat iron component, vertically positioned in the middle of the channel steel frame. Its lower part is connected to the two lifting holes (1a) of the gate (1) by bolts, while its upper part passes through the top middle opening of the channel steel frame and is connected to the lifting lever located on one side of the channel steel frame. One-third of the lifting lever is supported and connected by a lever bracket located on the side of the channel steel frame. The valve plate opening positioning device is installed at the top middle opening through which the connecting valve stem passes. When the connecting valve stem is lifted or lowered to the designated position, it is locked and fixed to prevent further descent, thus controlling the opening and closing degree of the gate.

2. The quick-opening and closing gate valve for use in inclined plate sedimentation tanks as described in claim 1, characterized in that, The connecting valve stem (A1) is provided with a valve plate opening positioning eye hole (A1a). Specifically, the positioning eye hole is opened on the vertical center line of the connecting valve stem and is designed with equal spacing. The uppermost positioning eye hole is connected to the lifting arm lever (A3) by means of bolt and nut connection. The valve plate opening positioning device (A2) includes an angle steel positioning seat (A2a), a positioning long bolt (A2b) and a positioning nut (A2c). The angle steel positioning seat is welded and fixed at the top middle opening of the channel steel frame (2). When the connecting valve stem is raised or lowered to the designated position at this location, the positioning long bolt passes through the angle steel positioning seat and the positioning eye hole laterally and is screwed and fixed by the positioning nut. That is, the valve plate opening positioning device locks and fixes the connecting valve stem and the gate (1).

3. A quick-opening and closing gate valve for use in an inclined plate sedimentation tank as described in claim 1, characterized in that, The lifting lever (A3) applies force clockwise, and together with the lever bracket (A4), it lifts the connecting valve rod (A1) connected to it upward, causing the gate (1) to be lifted upward along the frame grooves (2a) on the left and right sides of the channel steel frame (2). When it reaches the designated position, the valve plate opening positioning device (A2) locks and fixes the gate, opening the inclined plate sedimentation tank. When the lifting lever applies force counterclockwise, the connecting valve rod connected to it descends, causing the gate to fall down along the frame grooves on the left and right sides of the channel steel frame. When it reaches the designated position, the valve plate opening positioning device locks and fixes the gate, closing and isolating the inclined plate sedimentation tank.

4. A quick-opening and closing gate valve for use in an inclined plate sedimentation tank as described in claim 1, characterized in that, The gate (1) is wrapped with fluororubber sealing plates (1b) on both sides and bottom, and the fluororubber sealing plates are fixed by bolts.

5. A quick-opening and closing gate valve for use in an inclined plate sedimentation tank as described in claim 1, characterized in that, The gate (1) has vertically welded positioning angle steel (1c) of equal length on its back near the two sides. The thickness of the positioning angle steel plus the thickness of the gate itself is equal to the width of the frame groove (2a) on the left and right sides of the channel steel frame (2).

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