Leak-proof gate valve and dried sludge bin comprising same
By arranging a sealing component on the inner wall of the gate valve, the problem of insufficient sealing of the traditional gate valve is solved, and the efficient and safe unloading process of the dried sludge is realized.
Patent Information
- Application Number
- CN202422927087.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-29
- Publication Date
- 2025-09-30
- Estimated Expiration
- 2034-11-29
AI Technical Summary
Traditional gate valves are prone to insufficient sealing during the unloading process, resulting in leakage of dried sludge, affecting the environment and equipment life.
A sealing assembly is provided on the inner side walls of the first discharge cavity and the second discharge cavity of the gate valve, including an elastic sealing medium and a pressure plate. The protruding part of the elastic sealing medium closely cooperates with the gate to scrape away residual materials on the surface of the gate and enhance the sealing effect.
It effectively prevents the leakage of dried sludge during the opening or closing process of the gate valve, improves the sealing performance, and ensures the cleanliness and safety of the operating environment.
Smart Images
Figure CN223396772U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of gate valves, in particular to an anti-leakage gate valve and a drying sludge silo comprising the same. Background Art
[0002] In the sludge treatment industry, direct low-temperature drying is commonly used to convert liquid sludge with a moisture content exceeding 99% into granular or powdery dried sludge with a moisture content of 30-40%. This process not only reduces the sludge's volume but also facilitates its subsequent transportation, storage, resource recovery, and harmless disposal. Sludge that has undergone low-temperature drying is typically temporarily stored in a drying sludge silo, awaiting the arrival of dedicated sludge transport vehicles. At the discharge end of the drying sludge silo, gate valves are typically used as the primary discharge control device to ensure smooth sludge discharge. However, in practice, due to the small particle size of dried sludge, traditional gate valves often suffer from insufficient sealing during discharge. When the gate valve is opened or closed, the fine and loose nature of the sludge particles makes them easily leak through the gaps in the gate or through the chute. This leakage not only pollutes the on-site environment but also seriously affects the health of workers. Furthermore, long-term leakage can cause wear and corrosion on the gate valve itself, further reducing its service life and sealing performance. Therefore, how to develop a leakage-proof gate valve that can effectively prevent the dried sludge from leaking from the gap to the external environment while ensuring the unloading efficiency is an urgent problem that needs to be solved. Utility Model Content
[0003] In response to the problems existing in the prior art, the first objective of the present invention is to provide a leak-proof gate valve comprising a valve body, a first gate, a second gate, and a sealing assembly. By providing the sealing assembly on the inner sidewalls of the first and second discharge cavities, leakage of material during the opening and closing of the first or second gate is effectively prevented.
[0004] The second purpose of the present utility model is to provide a dried sludge silo, including a silo and the above-mentioned anti-leakage gate valve, which effectively prevents the dried sludge from leaking into the external environment when the anti-leakage gate valve is closed or opened, optimizes the working environment of dried sludge loading and unloading, and ensures the cleanliness and safety of the operation.
[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:
[0006] 1. The leak-proof gate valve of claim 1, wherein the first gate plate is slidably mounted on the valve body and the second gate plate is slidably mounted on the valve body. The first gate plate is slidably mounted on the valve body and the second gate plate is slidably mounted on the valve body. The first discharge cavity is used to control whether the first feed port is connected or not with the first discharge port; the second gate plate is slidably arranged in the second discharge cavity through the second slot, and is used to control whether the second feed port is connected or not with the second discharge port; wherein, a plurality of sealing components are arranged on the inner side walls of the first discharge cavity and the second discharge cavity, and the sealing components include an elastic sealing medium and a pressure plate pressed on the outside of the elastic sealing medium, and the lower part of the elastic sealing medium has a protruding portion, and the protruding portion cooperates with the outer edge of the first gate plate or the second gate plate when the first gate plate or the second gate plate slides to the closed position.
[0007] Furthermore, one of the elastic sealing media is located above the first notch or the second notch, and the protruding portion abuts against the upper surface of the first gate plate or the second gate plate.
[0008] Furthermore, a plurality of threaded holes are correspondingly provided on the inner side walls of the pressure plate, the elastic sealing medium, the first discharge cavity and the second discharge cavity, and a screw is arranged in each threaded hole. The screw passes through the pressure plate and the elastic sealing medium in sequence and is threadedly connected to the inner side wall of the first discharge cavity or the second discharge cavity.
[0009] Furthermore, a plurality of bolt bearings are rotatably provided on the inner side wall of the first discharge cavity or the second discharge cavity at certain intervals along the longitudinal direction of the valve body, and the outer surfaces of the bolt bearings abut against the lower surface of the first gate plate or the second gate plate.
[0010] Furthermore, it also includes a scraper, which is arranged on the pressure plate near the first slot or the second slot, one end of the scraper is fixed to the pressure plate, and the other end of the scraper extends downward and abuts against the upper surface of the first gate plate or the second gate plate.
[0011] Furthermore, a first outer frame and a second outer frame are respectively provided on both sides of the valve body, the first outer frame defines a first gate cavity for accommodating the first gate plate, and the second outer frame defines a second gate cavity for accommodating the second gate plate; guide grooves are provided on both sides of the first outer frame and the second outer frame, and the first gate plate and the second gate plate respectively have a first guide block and a second guide block that slide with the guide grooves on both sides.
[0012] Furthermore, a first hydraulic cylinder and a second hydraulic cylinder are provided on the side of the valve body. The piston rod of the first hydraulic cylinder is telescopically connected to the first guide block, and the piston rod of the second hydraulic cylinder is telescopically connected to the second guide block.
[0013] Furthermore, the sealing assembly is also arranged on the outer side wall of the first discharge cavity located at the first notch and on the outer side wall of the second discharge cavity located at the second notch.
[0014] Furthermore, a plurality of reinforcing ribs are provided on the inner side walls of the first discharge cavity and the second discharge cavity along the longitudinal direction of the valve body.
[0015] A dried sludge silo comprises: a silo, the silo including a dried sludge inlet formed at the top and a dried sludge outlet formed at the bottom; the above-mentioned anti-leakage gate valve, the anti-leakage gate valve is arranged at the bottom of the silo, wherein the first feed port and the second feed port are respectively matched with the dried sludge outlet.
[0016] The utility model has the following advantages:
[0017] The utility model provides a leak-proof gate valve with a sealing assembly provided on the inner side walls of the first discharge cavity and the second discharge cavity. The sealing assembly includes an elastic sealing medium and a pressure plate on the outside thereof, which effectively prevents leakage of materials during the opening and closing process of the first gate or the second gate. The protruding portion of the elastic sealing medium closely matches the outer edge of the first gate or the second gate, and one of the elastic sealing media is located above the first notch or the second notch. The protruding portion abuts against the upper surface of the first gate or the second gate, and is used to scrape away the residual material on the upper surface of the first gate or the second gate, further enhancing the sealing effect. The sealing assembly effectively improves the sealing performance of the valve, prevents material leakage, and ensures the stability and durability of the structure. The valve is suitable for use in situations where material leakage needs to be strictly controlled, such as drying sludge silos, to achieve efficient and flexible material control. BRIEF DESCRIPTION OF THE DRAWINGS
[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the anti-leakage gate valve of the utility model in a closed state.
[0019] Figure 2 It is a three-dimensional structural diagram of the anti-leakage gate valve of the utility model.
[0020] Figure 3 It is a three-dimensional structural diagram of the anti-leakage gate valve of the utility model.
[0021] Figure 4 It is a three-dimensional exploded view of the anti-leakage gate valve of the utility model.
[0022] Figure 5 It is a cross-sectional view of the anti-leakage gate valve of the present utility model.
[0023] Figure 6 It is a cross-sectional view of another embodiment of the anti-leakage gate valve of the present utility model.
[0024] Figure 7 The utility model is a schematic diagram of the three-dimensional structure of the anti-leakage gate valve used in the sludge drying silo.
[0025] Figure 8 The utility model is a schematic diagram of the three-dimensional structure of the anti-leakage gate valve used in the sludge drying silo.
[0026] Among them, A is a gate valve, 1 is a valve body, 101 is a partition plate, 102 is a first discharge cavity, 102a is a first feed port, 102b is a first discharge port, 102c is a first notch, 103 is a second discharge cavity, 103a is a second feed port, 103b is a second discharge port, 103c is a second notch, 104 is a first gate, 105 is a second gate, 106 is a bolt bearing, 107 is a scraper, 108 is a reinforcing rib, 2 is a sealing assembly, 201 is a spring Sealing medium, 201a is the protruding part, 202 is the pressure plate, 202a is the threaded hole, 3 is the first outer frame, 301 is the first gate cavity, 302 is the guide groove, 303 is the first guide block, 304 is the reinforcing rib, 4 is the second outer frame, 401 is the second gate cavity, 402 is the guide groove, 403 is the second guide block, 404 is the reinforcing rib, 5 is the first hydraulic cylinder, 6 is the second hydraulic cylinder, 7 is the silo, 701 is the dried sludge inlet, and 702 is the dried sludge outlet. DETAILED DESCRIPTION
[0027] The following description is essentially only exemplary and is not intended to limit the present invention, its application, or use. It will be further understood that the terms "comprise" and / or "comprising" specify the existence of the features, wholes, steps, operations, elements and / or parts described when used in this specification, but do not exclude the existence of one or more other features, wholes, steps, operations, elements, parts and / or their groups or add one or more other features, wholes, steps, operations, elements, parts and / or their groups. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items. It will be understood that when an element, component and / or part is referred to as "connected to another element, component and / or part", it can be directly connected to another element, component and / or part, or there can be an intermediate element. It will be understood that although the terms "first", "second" and the like can be used to describe various elements, components and / or parts in this article, these elements, components and / or parts should not be limited by these terms. These terms are only used to distinguish an element, component or part from another element, component or part. Therefore, the first element, component or part discussed below can be referred to as the second element, component or part without departing from the teachings of the present invention. Unless otherwise defined, all terms (including technical terms and scientific terms) used herein have the same meaning as commonly understood by those of ordinary skill in the art to which the present invention belongs. It will be further understood that terms such as those defined in commonly used dictionaries should be interpreted as having a meaning consistent with their meaning in the relevant field and / or the context of this specification, and will not be interpreted in an idealized or overly formal sense unless explicitly defined as such herein.
[0028] It should be understood that, in order to clearly show the contents therein, the drawings herein are not drawn to scale, and the same or similar reference numerals indicate the same or similar components or parts. In addition, it should be understood that any embodiments described in this application and the technical features included therein can be combined with each other.
[0029] The present invention will be further described in detail below with reference to the accompanying drawings and specific implementation methods.
[0030] like Figure 1-5As shown, a leak-proof gate valve A includes a valve body 1, a first gate plate 104, a second gate plate 105, and a sealing assembly 2. The X direction is the longitudinal direction of the valve body 1, and the Y direction is the transverse direction of the valve body 1. The valve body 1 is arranged horizontally and has an overall rectangular frame structure. A partition plate 101 is provided within the valve body 1. The partition plate 101 is an inverted U-shaped strip structure and extends along the transverse direction Y of the valve body 1. It is fixed to the inner walls on both sides of the valve body 1. The thickness of the partition plate 101 is less than that of the valve body 1. In other words, it does not completely isolate the two discharge spaces. Instead, a certain connecting area is left at the bottom of the valve body 1, allowing the lower parts of the first discharge cavity 102 and the second discharge cavity 103 to communicate with each other, facilitating smooth material flow. The first discharge cavity 102 includes a first feed port 102a formed at the top and a first discharge port 102b formed at the bottom, and a first slot 102c formed on a side wall away from the second discharge cavity 103. The second discharge cavity 103 includes a second feed port 103a formed at the top and a second discharge port 103b formed at the bottom, and a second slot 103c formed on a side wall away from the first discharge cavity 102. The first slot 102c and the second slot 103c are respectively located on opposite sides of the valve body 1. The first slot 102c and the second slot 103c are both strip-shaped openings and are arranged parallel to the partition plate 101. They are used to receive and guide the movement of the first gate plate 104 and the second gate plate 105. The first discharge cavity 102 and the second discharge cavity 103 are generally square, that is, the first feed port 102a, the first discharge port 102b, the second feed port 103a and the second discharge port 103b are all square, so as to optimize the material flow path and reduce the risk of material blockage. The first feed port 102a and the second feed port 103a are used to receive materials from the outlet of the silo 7.
[0031] Continue to refer to Figure 1-5The first gate 104 is slidably disposed in the first discharge cavity 102 through the first slot 102c, and is used to control whether the first feed port 102a is connected to the first discharge port 102b. The second gate 105 is slidably disposed in the second discharge cavity 103 through the second slot 103c, and is used to control whether the second feed port 103a is connected to the second discharge port 103b. The first gate 104 serves as a control element, capable of adjusting the communication state between the first feed port 102a and the first discharge port 102b. The shape of the first gate 104 or the second gate 105 matches the shape of the first discharge cavity 102 or the second discharge cavity 103 to ensure sealing. When the first gate 104 slides to a position that completely covers the first discharge cavity 102, the flow of material between the first feed port 102a and the first discharge port 102b is blocked, achieving precise control of the material flow. Conversely, when the first gate 104 slides to the open position, a discharge channel is formed between the first feed port 102a and the first discharge port 102b, allowing material to flow smoothly from the first feed port 102a to the first discharge port 102b. Similarly, the second gate 105 also serves as a control element, capable of adjusting the communication state between the second feed port 103a and the second discharge port 103b. The methods for driving the movement of the first gate 104 and the second gate 105 include pneumatic, hydraulic, manual, etc.
[0032] Continue to refer to Figure 1-5Multiple sealing assemblies 2 are disposed on the inner sidewalls of both the first and second discharge cavities 102, 103. These sealing assemblies 2 include an elastic sealing medium 201 and a pressure plate 202 pressed against the outer side of the elastic sealing medium 201. Both the elastic sealing medium 201 and the pressure plate 202 are positioned above the first and second gates 104, 105. The elastic sealing medium 201 has a protruding portion 201a at its lower portion, meaning that the height of the elastic sealing medium 201 is greater than that of the pressure plate 202. The protruding portion 201a engages with the outer edge of the first or second gate 104, 105 when the first or second gate 104, 105 slides to the closed position. The elastic sealing medium 201 is a cloth-reinforced rubber sheet. In this embodiment, the first and second discharge cavities 102, 103 are both square in structure. The inner wall of each discharge cavity consists of four surfaces, and each inner wall is provided with a sealing assembly 2, i.e., four sealing assemblies 2 are provided. Among them, the three sealing components 2 correspond to the three side edges of the first gate plate 104 or the second gate plate 105 respectively. After the first gate plate 104 or the second gate plate 105 slides and completes the closing action, the protruding part 201a of the elastic sealing medium 201 tightly fits the outer edge of the first gate plate 104 or the second gate plate 105, effectively preventing the material from escaping from the gap to the external environment. One of the elastic sealing media 201 is located above the first slot 102c or the second slot 103c, and the protruding portion abuts against the upper surface of the first gate plate 104 or the second gate plate 105. It is used to deal with the material remaining on the upper surface of the first gate plate 104 or the second gate plate 105. During the process of sliding open the first gate plate 104 or the second gate plate 105, the protruding portion 201a of the elastic sealing medium 201 scrapes the material on the upper surface of the first gate plate 104 or the second gate plate 105, thereby preventing the material from leaking through the first slot 102c or the second slot 103c, thereby ensuring the rigor and efficiency of the entire unloading process.
[0033] Continue to refer to Figure 1-5 The pressure plate 202, the elastic sealing medium 201, the inner sidewalls of the first discharge cavity 102, and the second discharge cavity 103 are each provided with a plurality of threaded holes 202a. Each threaded hole 202a is provided with a screw, which passes through the pressure plate 202 and the elastic sealing medium 201 in sequence and is threadedly connected to the inner sidewall of the first discharge cavity 102 or the second discharge cavity 103. The elastic sealing medium 201 and the pressure plate 202 are fixed to the inner sidewall of the first discharge cavity 102 or the second discharge cavity 103 by the screws, thereby enhancing the stability of the sealing assembly 2 and effectively preventing the elastic sealing medium 201 from shifting during long-term use. Once the elastic sealing medium 201 shifts, a gap may be generated, which may cause material leakage. In addition, the replacement and disassembly are convenient.
[0034] Continue to refer to Figure 1-5Multiple bolt bearings 106 are rotatably disposed at regular intervals along the longitudinal direction of the valve body 1 on the inner sidewalls of the first discharge cavity 102 or the second discharge cavity 103. These bolt bearings 106 are horizontally arranged on two opposing inner sidewalls of the valve body 1. The outer surfaces of the bolt bearings 106 abut against the lower surfaces of the first gate plate 104 or the second gate plate 105, allowing the first gate plate 104 or the second gate plate 105 to move along a predetermined path under the guidance of the bolt bearings 106. Of course, in addition to the bolt bearings 106, they can also be replaced with sliding grooves to limit the sliding trajectory of the first gate plate 104 or the second gate plate 105.
[0035] like Figure 6 As shown in the figure, another embodiment for further preventing material leakage is shown. The anti-leakage gate valve A also includes a scraper 107. The scraper 107 is disposed on the pressure plate 202 near the first notch 102c or the second notch 103c. The width of the scraper 107 is approximately equal to the width of the pressure plate 202, ensuring the stability and coverage of the scraper 107 during operation. One end of the scraper 107 is fixed to the pressure plate 202, and the other end of the scraper 107 extends downward at an angle and abuts the upper surface of the first gate plate 104 or the second gate plate 105. The provision of the scraper 107 helps to remove material accumulated on the first gate plate 104 or the second gate plate 105, and can reduce direct contact between the material located on the first gate plate 104 or the second gate plate 105 and the protruding portion 201a of the elastic sealing medium 201, thereby effectively reducing the wear of the protruding portion 201a caused by long-term material pressure, thereby extending the service life of the sealing assembly 2. The scraper 107 also significantly reduces the burden on the protruding portion 201a in preventing material from leaking out of the notch, further improving sealing performance. In an embodiment not shown, a brush is further provided on the protruding portion 201a of the elastic sealing medium 201 to further block material and prevent leakage. In another embodiment, the scraper 107 is provided not only on the pressure plate 202 above the first notch 102c or the second notch 103c, but also on the other pressure plates 202. This arrangement of the scraper 107 circumferentially within the first and second discharge cavities 102, 103 further improves sealing performance.
[0036] like Figure 2 and Figure 3 As shown, the sealing assembly 2 is also installed on the outer wall of the first discharge cavity 102 located at the first notch 102c, and on the outer wall of the second discharge cavity 103 located at the second notch 103c. Although the sealing assembly 2 on the inner wall can block most of the material, some residual material may still adhere to the upper surface of the first gate 104 or the second gate 105 and leak out through the notch when the gate moves. Therefore, by adding the sealing assembly 2 on the outer wall, the material is further blocked and the cleanliness of the discharge process is ensured.
[0037] like Figure 1-5 As shown, a plurality of reinforcing ribs 108 are provided on the inner side walls of the first discharge cavity 102 and the second discharge cavity 103 along the longitudinal direction of the valve body 1. The reinforcing ribs 108 are located above the sealing assembly 2 to ensure the stability and durability of the entire discharge structure, and also have the function of breaking the arch and dispersing the material. When the material is stored in the silo 7, the accumulation and arching problems that may be encountered are such that when the material falls, the arched and compacted material will be broken and dispersed at the moment of hitting the reinforcing ribs 108, thereby avoiding the blockage and retention of the material during the discharge process and ensuring that the material can be smoothly and evenly dispersed and discharged. In this embodiment, the number of reinforcing ribs 108 in the first discharge cavity 102 and the second discharge cavity 103 are both two.
[0038] like Figure 1-5 As shown, a first outer frame 3 and a second outer frame 4 are respectively provided on both sides of the valve body 1, and the first outer frame 3 and the second outer frame 4 are both square structures. A first gate cavity 301 for accommodating the first gate plate 104 is defined in the first outer frame 3, and a second gate cavity 401 for accommodating the second gate plate 105 is defined in the second outer frame 4; guide grooves 302 / 402 are provided on both sides of the first outer frame 3 and the second outer frame 4, and a first guide block 303 and a second guide block 403 are respectively provided on both sides of the first gate plate 104 and the second gate plate 105, which slide in cooperation with the guide grooves 302 / 402. In this embodiment, the first gate plate 104 and the second gate plate 105 are driven by hydraulic transmission. Specifically, the side of the valve body 1 is further provided with a first hydraulic cylinder 5 and a second hydraulic cylinder 6. The first hydraulic cylinder 5 and the second hydraulic cylinder 6 are symmetrically arranged on an outer side wall of the valve body 1. The piston rod of the first hydraulic cylinder 5 is telescopically connected to the first guide block 303, and the piston rod of the second hydraulic cylinder 6 is telescopically connected to the second guide block 403. Typically, the first hydraulic cylinder 5 and the second hydraulic cylinder 6 synchronously drive the sliding of the first gate plate 104 and the second gate plate 105, thereby simultaneously opening or closing the discharge channel. In addition, a plurality of reinforcing ribs 304 / 404 are provided in the first outer frame 3 and the second outer frame 4 along the longitudinal direction of the valve body 1 to enhance the strength of the first outer frame 3 and the second outer frame 4.
[0039] like Figure 7 and Figure 8As shown, a dried sludge silo includes: a silo 7, which includes a dried sludge inlet 701 formed at the top and a dried sludge outlet 702 formed at the bottom; the aforementioned anti-leakage gate valve A, which is arranged at the bottom of the silo 7, wherein the first feed port 102a and the second feed port 103a respectively cooperate with the dried sludge outlet 702. As shown in the figure, the silo 7 has two dried sludge inlets 701 and two dried sludge outlets 702, and is correspondingly equipped with two anti-leakage gate valves A. The first feed port 102a and the second feed port 103a in each anti-leakage gate valve A correspond to one dried sludge outlet 702. For dried sludge outlets 702 with a larger size, it is preferable to use a split-type anti-leakage gate valve A. This not only facilitates control but also effectively shares the weight of the material, thereby increasing the material discharge speed and optimizing the sealing performance. Specifically, when the anti-leakage gate valve A is opened, the first gate 104 and the second gate 105 will gradually open from the middle to both sides, releasing the sludge powder from a small opening to a large opening. This method of releasing the material is more reasonable than that of a unilateral gate valve. It not only improves the discharge efficiency, but also reduces the risk of blockage and wear of the sludge during the discharge process.
[0040] Based on the aforementioned anti-leakage gate valve A and the dried sludge silo including the same, when in use, the first hydraulic cylinder 5 is activated, its piston rod is extended, and the first guide block 303 and the first gate plate 104 are pushed to slide along the guide groove 302 / 402 until the first gate plate 104 fully opens the passage between the first feed port 102a and the first discharge port 102b of the first discharge cavity 102. Simultaneously, the second hydraulic cylinder 6 is activated, its piston rod is extended, and the second guide block 403 and the second gate plate 105 are pushed to slide along the guide groove 302 / 402 until the second gate plate 105 fully opens the passage between the second feed port 103a and the second discharge port 103b of the second discharge cavity 103. During this process, the protruding portion 201a of the elastic sealing medium 201 scrapes the material on the upper surface of the first gate plate 104 or the second gate plate 105 to prevent the material from leaking out through the first notch 102c or the second notch 103c. When the first and second gates 104, 105 are in the open state, material enters the first and second discharge cavities 102, 103 through the first and second feed ports 102a, 103a, respectively, and is discharged from the first and second discharge ports 102b, 103b. When material conveying needs to be stopped, the first hydraulic cylinder 5 is activated again, causing its piston rod to retract, driving the first gate 104 to slide along the guide grooves 302 / 402 to a closed position, sealing the first discharge cavity 102. Simultaneously, the second hydraulic cylinder 6 is activated, causing its piston rod to retract, driving the second gate 105 to slide along the guide grooves 302 / 402 to a closed position, sealing the second discharge cavity. This allows the protruding portion 201a of the elastic sealing medium 201 to tightly engage the outer edge of the first and second gates 104, 105, achieving a seal.
[0041] In general, the anti-leakage gate valve of the present invention is provided with a sealing assembly on the inner side wall of the first discharge cavity and the second discharge cavity. The sealing assembly includes an elastic sealing medium and a pressure plate on the outside thereof, which effectively prevents leakage of materials during the opening and closing process of the first gate or the second gate. The protruding portion of the elastic sealing medium is tightly matched with the outer edge of the first gate or the second gate, and one of the elastic sealing media is located above the first notch or the second notch. The protruding portion abuts against the upper surface of the first gate or the second gate, which is used to scrape the residual material on the upper surface of the first gate or the second gate, further enhancing the sealing effect. The sealing assembly effectively improves the sealing performance of the valve, prevents material leakage, and ensures the stability and durability of the structure. It is suitable for occasions such as drying sludge silos where material leakage needs to be strictly controlled, and realizes efficient and flexible material control.
[0042] The above embodiments are preferred implementation methods of the present invention, but the implementation methods of the present invention are not limited to the above embodiments. Any other changes, modifications, substitutions, combinations, and simplifications that do not deviate from the spirit and principles of the present invention should be considered as equivalent replacement methods and are included in the scope of protection of the present invention.
Claims
1. A leak-proof gate valve, characterized in that: include: A horizontally arranged valve body, wherein a partition plate is provided in the valve body to divide the space within the valve body into a first discharge cavity and a second discharge cavity, wherein the first discharge cavity includes a first feed port formed at the top and a first discharge port formed at the bottom, and a first notch formed on a side wall away from the second discharge cavity, and the second discharge cavity includes a second feed port formed at the top and a second discharge port formed at the bottom, and a second notch formed on a side wall away from the first discharge cavity, wherein the first notch and the second notch are respectively located on opposite sides of the valve body; a first gate, the first gate being slidably disposed in the first discharge cavity through the first slot, and being used to control whether the first feed port is connected to the first discharge port or not; a second gate, the second gate being slidably disposed in the second discharge cavity through the second slot, and being used to control whether the second feed port is connected to the second discharge port; Among them, multiple sealing components are provided on the inner side walls of the first unloading cavity and the second unloading cavity, and the sealing components include an elastic sealing medium and a pressure plate pressed on the outside of the elastic sealing medium. The lower part of the elastic sealing medium has a protruding part, and the protruding part cooperates with the outer edge of the first gate plate or the second gate plate when the first gate plate or the second gate plate slides to the closed position.
2. The anti-leakage gate valve according to claim 1, characterized in that: One of the elastic sealing media is located above the first notch or the second notch, and the protruding portion abuts against the upper surface of the first gate plate or the second gate plate.
3. The anti-leakage gate valve according to claim 1, characterized in that: The pressure plate, the elastic sealing medium, the first discharge cavity and the inner side wall of the second discharge cavity are respectively provided with a plurality of threaded holes, each of the threaded holes is provided with a screw, and the screw passes through the pressure plate and the elastic sealing medium in sequence and is threadedly connected to the inner side wall of the first discharge cavity or the second discharge cavity.
4. The anti-leakage gate valve according to claim 1, characterized in that: A plurality of bolt bearings are rotatably provided on the inner side wall of the first discharge cavity or the second discharge cavity at certain intervals along the longitudinal direction of the valve body, and the outer surfaces of the bolt bearings abut against the lower surface of the first gate plate or the second gate plate.
5. The anti-leakage gate valve according to claim 1, characterized in that: It also includes a scraper, which is arranged on the pressure plate near the first notch or the second notch, one end of the scraper is fixed to the pressure plate, and the other end of the scraper extends downward and abuts against the upper surface of the first gate plate or the second gate plate.
6. The anti-leakage gate valve according to claim 1, characterized in that: A first outer frame and a second outer frame are respectively provided on both sides of the valve body, the first outer frame defines a first gate cavity for accommodating the first gate, and the second outer frame defines a second gate cavity for accommodating the second gate; guide grooves are provided on both sides of the first outer frame and the second outer frame, and the first gate and the second gate have first guide blocks and second guide blocks that slide in cooperation with the guide grooves on both sides respectively.
7. The anti-leakage gate valve according to claim 6, characterized in that: A first hydraulic cylinder and a second hydraulic cylinder are further provided on the side of the valve body. The piston rod of the first hydraulic cylinder is telescopically connected to the first guide block, and the piston rod of the second hydraulic cylinder is telescopically connected to the second guide block.
8. The anti-leakage gate valve according to claim 1, characterized in that: The sealing assembly is further disposed on an outer side wall of the first discharge cavity located at the first slot and on an outer side wall of the second discharge cavity located at the second slot.
9. The anti-leakage gate valve according to claim 1, characterized in that: A plurality of reinforcing ribs are provided on the inner side walls of the first discharge cavity and the second discharge cavity along the longitudinal direction of the valve body.
10. A drying sludge silo, characterized in that: include: A silo, the silo comprising a dried sludge inlet formed at the top and a dried sludge outlet formed at the bottom; The anti-leakage gate valve according to any one of claims 1 to 9, wherein the anti-leakage gate valve is arranged at the bottom of the silo, wherein the first feed port and the second feed port are respectively matched with the dried sludge outlet.