Anti-caking slurry gate valve

Abstract

This utility model belongs to the field of valve technology, specifically disclosing an anti-caking gate valve for slurry, including a valve body, a gate, a hydraulic push rod, and a cleaning device. The cleaning device includes a drive motor, a crank, a rocker arm, and a scraper. The drive motor is fixedly installed in the valve body, and its output shaft is fixedly connected to the crank. One end of the rocker arm is rotatably connected to the crank, and the other end of the crank is rotatably connected to the scraper. A second sliding groove is provided in the valve body, and the scraper is slidably connected to the second sliding groove. This utility model converts the rotation output of the drive motor into the reciprocating motion of the scraper through a crank-slider mechanism, cleaning the slurry on the surface of the gate and preventing slurry caking.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, specifically to an anti-caking gate valve for slurry. Background Technology

[0002] In the mining industry, the transportation and treatment of slurry is a crucial link. As a key control component in slurry transportation pipelines, the gate valve's operation directly affects the stability and efficiency of the entire production process. Slurry itself has complex and variable properties and is prone to chemical reactions such as hydration and flocculation, which can lead to the formation of viscous deposits. When the slurry flows through the gate valve, fine particles gradually fill the tiny gaps between the valve seat and the gate due to the turbulent flow of the fluid. Over time, under the action of surface tension and chemical bonding forces, a hard and difficult-to-remove caking layer is formed, which seriously affects the valve's opening and closing performance and may even cause the valve to jam or malfunction, frequently interrupting the production process and causing huge economic losses to enterprises.

[0003] Patent publication number CN218369693U discloses a hydraulic gate valve for a sludge conveying system storage bin, comprising a valve frame and a hydraulic mechanism. The valve frame includes a valve frame, a U-shaped support frame, two bow-shaped limiting plates, and two fixing blocks. A first sliding groove is formed on the surface of the valve frame. The two bow-shaped limiting plates are fixedly installed on both sides of the valve frame. The U-shaped support frame is slidably installed within the two bow-shaped limiting plates and is fixedly installed on the side surface of the valve frame by the two fixing blocks. The hydraulic mechanism includes a gate, a clamping block, and two servo hydraulic cylinders. The gate is inserted into the first sliding groove. Both servo hydraulic cylinders are installed on the U-shaped support frame, facilitating the movement of the gate installed on the clamping block into the first sliding groove for easy control of sludge flow. The mechanism provides strong power and improves the gate's performance. The clamping block facilitates gate replacement via pins.

[0004] In the above scheme, when the gate is closed, the sediment of the slurry is prone to solidify and adhere to the gate. If the sludge hardens, it can easily cause difficulty in opening and closing the gate, eventually leading to the gate and valve body getting stuck. Utility Model Content

[0005] The purpose of this utility model is to provide an anti-caking slurry gate valve to solve the problem of slurry adhering to the gate plate and caking, causing the gate plate to jam with the valve body.

[0006] To achieve the above objectives, the basic solution provided by this utility model is as follows: a gate valve for preventing caking slurry, comprising a valve body, a gate, a hydraulic push rod, and a cleaning device. A first sliding groove is formed within the valve body, and the gate is slidably connected to the first sliding groove. Several support columns are welded to the upper surface of the valve body, and connecting flanges are welded to the top of each support column. The hydraulic cylinder of the hydraulic push rod is bolted to the connecting flange. A clamping block is fixedly connected to the hydraulic push rod, and the gate is bolted into the clamping block. The cleaning device includes a drive motor, a crank, a rocker arm, and a scraper. The drive motor is fixedly installed within the valve body, and the output shaft of the drive motor is fixedly connected to the crank. One end of the rocker arm is rotatably connected to the crank, and the other end of the crank is rotatably connected to the scraper. A second sliding groove is formed within the valve body, and the scraper is slidably connected to the second sliding groove.

[0007] The principle and beneficial effects of this utility model are as follows: the extension and retraction of the hydraulic push rod drives the gate to open or close, the support column provides support and limits the gate, the drive motor drives the crank to rotate, and since the scraper is limited by the slide groove, the reciprocating motion of the crank driving the rocker arm is converted into the linear reciprocating motion of the scraper. The reciprocating motion of the scraper scrapes away the slurry on the surface of the gate, preventing the slurry from hardening on the surface of the gate, thereby avoiding jamming of the gate.

[0008] Option 2, a preferred embodiment of the basic option, involves a one-way valve penetrating the valve body. A nozzle is threadedly connected to one end of the one-way valve within the valve body, and a water supply pipe is connected to the other end of the one-way valve outside the valve body. The nozzle faces the gate valve. Continuous water jets onto the gate valve surface clean residual slurry, as well as slurry from the crank and rocker surfaces, preventing the rocker from becoming stuck. Furthermore, the water flow softens any hardened slurry, preventing the gate valve from jamming during operation.

[0009] Option 3, a preferred embodiment of the basic option, includes a protective shell within the valve body. The drive motor is mounted inside the protective shell, with its output shaft penetrating the shell. A sealing ring is fitted onto the output shaft, and the sealing ring is fixedly connected to the protective shell. The protective shell protects the drive motor from damage by the slurry, and the sealing ring prevents slurry from entering the protective shell through the gap between the output shaft and the protective shell.

[0010] Option 4, a preferred option of the basic option, involves spraying a fluorosilicone modified coating onto the surface of the gate. The fluorosilicone modified coating reduces the adhesion of the slurry and has good wear resistance, making it less likely for the slurry to adhere to the gate and reducing the possibility of slurry caking.

[0011] Option 5, a preferred option of the basic scheme, includes a sealing gasket inside the first chute. This improves the sealing performance of the gate valve.

[0012] Option 6, a preferred option of the basic scheme, features a flow channel running through the valve body, within which a filter screen is fixedly installed. This filters out larger slag particles, preventing them from impacting the gate surface and creating a rough surface, thus reducing slurry adhesion. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of an anti-caking slurry gate valve according to this utility model;

[0014] Figure 2 This is a front view of an anti-caking slurry gate valve according to this utility model;

[0015] Figure 3 yes Figure 2 Sectional view at point A in the middle;

[0016] Figure 4 yes Figure 3 A magnified view of a section at point B in the middle. Detailed Implementation

[0017] The present invention will be further described in detail below through specific embodiments:

[0018] The reference numerals in the accompanying drawings include: 1-valve body, 2-gate, 3-hydraulic push rod, 4-cleaning device, 5-first slide, 6-support column, 7-connecting flange, 8-clamping block, 9-drive motor, 10-crank, 11-rocker, 12-second slide, 13-check valve, 14-nozzle, 15-water supply pipe, 16-protective shell, 17-sealing gasket, 18-sealing ring, 19-flow channel, 20-filter screen, 21-scraper.

[0019] Example

[0020] like Figures 1 to 4As shown: A gate valve for preventing caking slurry includes a valve body 1, a gate 2, a hydraulic push rod 3, and a cleaning device 4. The valve body 1 has a first sliding groove 5, and a sealing gasket 17 is wrapped inside the first sliding groove 5. The gate 2 is slidably connected to the first sliding groove 5. The surface of the gate 2 is sprayed with a fluorosilicone modified coating. Several support columns 6 are welded to the upper surface of the valve body 1. The top of the support column 6 is welded with a connecting flange 7. The hydraulic cylinder of the hydraulic push rod 3 is bolted to the connecting flange 7. The hydraulic push rod 3 is fixedly connected to a clamping block 8. The gate 2 is fixed in the clamping block 8 by bolts. The cleaning device 4 includes a drive motor 9, a crank 10, a rocker arm 11, and a scraper 21. A protective shell 16 is fixedly connected inside the valve body 1. The drive motor 9 is fixedly installed inside the protective shell 16. A reducer is connected to the output end of the drive motor 9. The output shaft of the reducer passes through the protective shell 16. A sealing ring 18 is sleeved on the output shaft of the reducer. The sealing ring 18 is fixedly connected to the protective shell 16. The crank 10 is fixedly connected to the output shaft of the reducer. One end of the rocker arm 11 is rotatably connected to the crank 10. The other end of the rocker arm 11 is rotatably connected to the scraper 21. A second sliding groove 12 is opened inside the valve body 1. The scraper 21 is slidably connected to the second sliding groove 12. A flow channel 19 passes through the valve body 1. A one-way valve 13 passes through the valve body. A nozzle 14 is threadedly connected to one end of the one-way valve 13 inside the valve body. A water supply pipe 15 is connected to one end of the one-way valve 13 outside the valve body. A filter screen 20 is fixedly installed inside the flow channel 19.

[0021] The implementation method of this embodiment is as follows: start the hydraulic push rod 3, the telescopic rod of the hydraulic push rod 3 drives the gate plate 2 to insert into the valve body 1, blocking the flow of slurry, start the drive motor 9, drive the crank 10 to rotate, the crank 10 drives the rocker arm 11 to rotate and reciprocate, the scraper 21 is limited by the second slide groove 12, and makes linear reciprocating motion in the second slide groove 12 to scrape off the slurry adhering to the surface of the gate plate 2, and the nozzle 14 sprays water in real time to clean the slurry on the surface of the gate plate 2, as well as the surface of the crank 10 and the rocker arm 11.

[0022] Before opening the gate valve, turn on the water supply to flush the surface of the gate 2, and then start the hydraulic push rod 3 to pull out the gate 2 to prevent the slurry from getting stuck on the gate 2.

[0023] The above descriptions are merely embodiments of this utility model, and common knowledge regarding specific structures and characteristics is not elaborated upon here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the structure of this utility model, and these should also be considered within the scope of protection of this utility model. These modifications will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application shall be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A gate valve for preventing caking of slurry, characterized in that, The device includes a valve body (1), a gate (2), a hydraulic push rod (3), and a cleaning device (4). A first groove (5) is provided inside the valve body (1). The gate (2) is slidably connected to the first groove (5). Several support columns (6) are welded to the upper surface of the valve body (1). A connecting flange (7) is welded to the top of each support column (6). The hydraulic cylinder of the hydraulic push rod (3) is bolted to the connecting flange (7). A clamping block (8) is fixedly connected to the hydraulic push rod (3). The gate (2) is fixed to the clamping block by bolts. 8) The cleaning device (4) includes a drive motor (9), a crank (10), a rocker arm (11) and a scraper (21). The drive motor (9) is fixedly installed inside the valve body (1). The output shaft of the drive motor (9) is fixedly connected to the crank (10). One end of the rocker arm (11) is rotatably connected to the crank (10). The other end of the crank (10) is rotatably connected to the scraper (21). A second sliding groove (12) is provided inside the valve body (1). The scraper (21) is slidably connected to the second sliding groove (12).

2. The anti-caking slurry gate valve according to claim 1, characterized in that... A one-way valve (13) is threaded through the valve body (1). A nozzle (14) is threaded to one end of the one-way valve (13) inside the valve body (1). A water supply pipe (15) is connected to one end of the one-way valve (13) outside the valve body (1). The nozzle (14) is facing the gate (2).

3. The anti-caking slurry gate valve according to claim 1, characterized in that, The valve body (1) is provided with a protective shell (16), the drive motor (9) is installed inside the protective shell (16), the output shaft of the drive motor (9) passes through the protective shell (16), and a sealing ring (18) is sleeved on the output shaft of the drive motor (9). The sealing ring (18) is fixedly connected to the protective shell (16).

4. The anti-caking slurry gate valve according to claim 1, characterized in that, The surface of the gate (2) is coated with a fluorosilicone modified coating.

5. A gate valve for preventing caking slurry according to claim 1, characterized in that... The first groove (5) is provided with a sealing gasket (17).

6. A gate valve for preventing caking slurry according to claim 1, characterized in that, A flow channel (19) runs through the valve body (1), and a filter screen (20) is fixedly installed in the flow channel (19).

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