A gate valve that can quickly remove coal tar when placed horizontally.

Abstract

This utility model belongs to the field of gate valve technology, specifically relating to a horizontally placed gate valve that can quickly remove coal tar. It includes a valve body, a valve cover, a valve stem, a gate, a valve body base, a slide rail, an upper and lower injection pipe, at least two injection holes, and at least one drain hole in the valve cover. The valve cover is fitted onto the top of the valve body, and the valve stem passes through the valve cover and is fixedly connected to the gate, driving the gate to rise and fall. Slide rail holes are correspondingly formed on the inner walls of both sides of the valve body, and a valve cover slide rail hole is formed at the corresponding position of the valve body slide rail hole. One end of the slide rail passes through the valve body slide rail hole, and the other end passes through the valve cover slide rail hole. The gate slides in cooperation with the slide rail and can only move axially along the slide rail. This utility model solves the technical problems of traditional horizontally placed gate valves, which require manual forced closure due to coal tar accumulation, easily causing valve stem bending and deformation, and damage to the stuffing box.

Description

Technical Field

[0001] This utility model belongs to the field of gate valve technology, specifically relating to a horizontally placed gate valve that can quickly remove coal tar. Background Technology

[0002] In the coking process, horizontally placed gate valves are key components for pipeline on / off control, and they need to operate under conditions of conveying coal tar-containing media for extended periods. However, after long-term use, existing horizontally placed gate valves are prone to accumulating large amounts of coal tar inside; even through routine operations of repeatedly opening and closing the valves, it is impossible to effectively clean these accumulated coal tar and accompanying impurities.

[0003] Over time, the accumulated coal tar hardens and preferentially adheres to critical functional parts of the valve, such as the sealing surface, top wedge, expansion block, and guide rail. The continuous accumulation of these hardened impurities directly leads to a series of serious problems: First, it damages the valve's sealing performance, causing pipeline leakage, resulting in material waste and potential safety hazards. Second, it hinders the normal opening and closing of the valve, preventing it from achieving complete closure, severely affecting the accuracy of pipeline on / off control and interfering with the stability of the coking production process. Third, it interferes with the normal movement of the gate, causing the gate's trajectory to deviate during lifting and lowering, further disrupting the valve's normal operating condition.

[0004] More seriously, when a valve cannot close due to the accumulation of impurities, if the operator uses a forced operation to forcibly cut off the pipeline, it will cause irreversible structural damage to the valve, such as bending and deformation of the valve stem and damage to the stuffing box. This not only significantly increases the equipment maintenance cost and replacement frequency, but also causes the coking production to be interrupted due to shutdown for maintenance, resulting in significant economic losses for the enterprise.

[0005] In summary, existing horizontal gate valves have significant shortcomings in addressing the problem of coal tar accumulation and cannot meet the long-term, stable, and efficient operation requirements of the coking industry. There is an urgent need for an improved horizontal gate valve that can specifically solve the above problems. Utility Model Content

[0006] To address the technical problem of the impact of coal tar on the performance of existing horizontally placed gate valves, this invention provides a horizontally placed gate valve that can quickly remove coal tar.

[0007] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows: A horizontally placed gate valve that can quickly remove coal tar includes a valve body, a valve cover, a valve stem, a gate plate and a valve body base, as well as a slide rail, an upper part of a blow-through pipe, a lower part of a blow-through pipe, at least two blow-through holes and at least one drain hole in the valve cover. The valve cover is fitted onto the top of the valve body, and the valve stem passes through the valve cover and is fixedly connected to the gate plate, for driving the gate plate to rise and fall; The valve body has valve body slide rail holes on both sides of the inner wall, and the valve cover has valve cover slide rail holes at the valve body slide rail holes. One end of the slide rail passes through the valve body slide rail hole and the other end passes through the valve cover slide rail hole. The gate plate slides with the slide rail and can only move along the slide rail axis. The blow holes are symmetrically opened on both sides of the valve body. The upper and lower blow pipes are both located inside the valve body, and both ends of the pipes are connected to the blow holes on both sides of the valve body. The drain hole of the valve cover is opened on the valve cover and communicates with the inner cavity of the valve body.

[0008] The upper part of the blow-through pipe extends upward along the inner wall of the valve body and is laid in accordance with the curvature of the inner wall of the valve cover. The upper part of the blow-through pipe bypasses the slide rail and valve stem without interfering with them. The lower part of the blow-through pipe extends downward along the inner wall of the valve body to the internal space of the valve body base and bypasses the top wedge inside the valve body.

[0009] Both the upper and lower sections of the injection pipeline are provided with air outlets spaced apart, and the air outlets are oriented towards the locations within the valve body where coal tar tends to accumulate.

[0010] The gate is also provided with rollers, which roll in cooperation with the inner wall of the valve body to assist the gate in moving along the slide rail.

[0011] The upper part of the blow-off pipe is connected to the inner wall of the valve body and the inner wall of the valve cover by a partial weld; the lower part of the blow-off pipe is connected to the inner wall of the valve body by a partial weld.

[0012] The connection between the gate and the slide rail is provided with a sliding shovel structure. The sliding shovel structure moves with the rise and fall of the gate to scrape off coal tar impurities attached to the surface of the slide rail.

[0013] Both the blow hole and the drain hole of the valve cover are externally connected to intelligent networked ball valves; the drain hole of the valve cover is also externally connected to a pipe or impurity collection bucket, and remote control and timed cleaning are realized through the intelligent networked ball valves.

[0014] The blow hole is connected to a high-temperature steam source. The high-temperature steam is injected into the valve body through the air outlets of the upper and lower blow pipes to heat and melt the coal tar.

[0015] Compared with the prior art, the beneficial effects of this utility model are: 1. This utility model, by setting up mutually cooperating injection pipelines (upper and lower sections) and combining them with air outlets facing the areas in the valve body prone to coal tar accumulation, can accurately deliver external high-temperature steam to key areas prone to scale buildup, such as the sealing surface, top wedge, expansion block, and guide rail. The high-temperature steam can quickly heat and melt hardened coal tar impurities, preventing valve leakage and incomplete closure caused by long-term impurity accumulation. Simultaneously, the melted coal tar can be discharged through the valve cover drain hole or flow into the pipeline with the valve opening, thoroughly removing internal scale. This solves the technical pain points of traditional horizontally placed gate valves, which require manual forced closure due to coal tar accumulation, easily causing valve stem bending and deformation, and damage to the stuffing box.

[0016] 2. This utility model adds a slide rail structure, with one end of the slide rail passing through the slide rail hole in the valve body and the other end passing through the slide rail hole in the valve cover. The gate can only move along the axial direction of the slide rail, which effectively restricts the rotational movement of the gate, ensuring the accurate movement trajectory of the gate and avoiding sealing failure caused by gate misalignment. At the same time, the sliding shovel structure designed at the connection between the gate and the slide rail can automatically scrape off coal tar impurities adhering to the surface of the slide rail during the valve opening and closing process, preventing the accumulation of dirt on the slide rail from affecting the smooth sliding of the gate, further ensuring the accuracy of the gate movement and the reliability of valve opening and closing, and extending the overall service life of the valve.

[0017] 3. This utility model allows for the connection of intelligent networked ball valves to the blowhole and valve cover drain hole, with the valve cover drain hole connected to a pipe or impurity collection tank. The intelligent networked ball valve enables remote control of the introduction of high-temperature steam and the discharge of coal tar, achieving timed valve cleaning without frequent manual disassembly or on-site operation, significantly reducing labor and time costs for valve maintenance in coking plants and similar settings. Simultaneously, the automated cleaning mode allows for flexible setting of cleaning cycles based on valve usage frequency and coal tar accumulation, avoiding scale buildup caused by untimely manual inspections, thus improving the convenience and efficiency of valve maintenance.

[0018] 4. In this utility model, the upper part of the blow-through pipe extends upward along the inner wall of the valve body and is laid in accordance with the curvature of the inner wall of the valve cover, bypassing the slide rail and valve stem to avoid interference; the lower part of the blow-through pipe extends downward along the inner wall of the valve body to the valve body base space and bypasses the top wedge. This layout can cover the upper and lower areas inside the valve and the periphery of key components, ensuring cleanliness without any dead corners. At the same time, the upper part of the blow-through pipe is connected to the inner wall of the valve body and valve cover by partial welding, and the lower part of the blow-through pipe is connected to the inner wall of the valve body by partial welding. This not only ensures the stability of the pipe fixation, but also avoids the impact of welding on the structural strength of the valve body and valve cover, ensuring the overall structural reliability of the valve and preventing pipe displacement or damage during long-term use. Attached Figure Description

[0019] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0020] The structures, proportions, sizes, etc. illustrated in this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed herein, and are not intended to limit the implementation conditions of this utility model. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportional relationships, or adjustments to the size, without affecting the effects and purposes that this utility model can produce, should still fall within the scope of the technical content disclosed in this utility model.

[0021] Figure 1 This is a front view of the structure of this utility model; Figure 2 This is a horizontal view of the structure of this utility model; Figure 3 This is an enlarged schematic diagram of the contact point between the slide rail and the gate of this utility model.

[0022] Wherein: 1 is the valve cover slide rail hole, 2 is the valve cover, 3 is the valve stem, 4 is the slide rail, 5 is the valve body, 6 is the upper part of the blow-off pipe, 7 is the gate, 8 is the roller, 9 is the blow-off hole, 10 is the lower part of the blow-off pipe, 11 is the valve body slide rail hole, 12 is the valve cover base, 13 is the valve cover drain hole, and 14 is the top wedge. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments of this utility model will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. These descriptions are only for further illustrating the features and advantages of this utility model, and not for limiting the claims of this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0024] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings and examples. The following examples are used to illustrate this utility model, but are not intended to limit its scope.

[0025] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0026] This embodiment provides a gate valve that can quickly remove coal tar when placed horizontally, such as... Figure 1-3 As shown, this gate valve achieves two main functions: first, controlling the on / off flow of the pipeline medium; and second, rapidly removing coal tar from the valve body. Its overall working principle revolves around the synergistic effect of its components, as detailed below: I. Normal opening and closing principle of pipeline on / off When it is necessary to control the flow of the pipeline, the valve stem 3 drives the gate 7, which is fixedly connected to it, to move up and down along the slide rail 4: One end of the slide rail 4 passes through the valve body slide rail hole 11 of the valve body 5, and the other end passes through the valve cover slide rail hole 1 of the valve cover 2. This can strictly limit the gate 7 to move only along the axial direction of the slide rail 4, prevent the gate 7 from rotating or deviating from its trajectory during movement, and ensure that the gate 7 and the sealing surface of the valve body 5 are precisely aligned.

[0027] Meanwhile, the rollers 8 on the gate 7 roll in cooperation with the inner wall of the valve body 5, which can reduce the frictional resistance between the gate 7 and the valve body 5 when the gate 7 rises and falls, assist the gate 7 to move smoothly, and ensure the stability and reliability of the valve opening and closing action. When the gate 7 descends to the bottom of the valve body 5, the valve closes and blocks the pipeline medium; when the gate 7 rises to the inner cavity of the valve cover 2, the valve opens and the pipeline medium flows normally.

[0028] II. Working Principle of Rapid Removal of Coal Tar from the Valve Body When coal tar accumulates in the valve body and needs to be cleaned, efficient cleaning is achieved through the synergistic effect of the injection pipeline, high-temperature steam, and sewage discharge structure. The specific process is as follows: 1. High-temperature steam transport and coal tar melting: Connect the blow hole 9 to a high-temperature steam source. The high-temperature steam enters the blow pipe 6 and the blow pipe 10 located inside the valve body 5 through the blow holes 9 symmetrically opened on both sides of the valve body 5.

[0029] Among them, the upper part of the blow pipe 6 extends upward along the inner wall of the valve body 5 and is laid in accordance with the arc of the inner wall of the valve cover 2 (and bypasses the slide rail 4 and valve stem 3 to avoid interference), and the lower part of the blow pipe 10 extends downward along the inner wall of the valve body 5 to the internal space of the valve body base 12 (and bypasses the top wedge 14 inside the valve body 5). The two cover the upper and lower areas of the valve body 5 and the periphery of key components.

[0030] Because both the upper 6 and lower 10 of the injection pipeline are provided with vent holes that are spaced apart and directed toward the "locations in the valve body where coal tar is easily accumulated" (such as the sealing surface, top wedge 14, and the periphery of the slide rail 4), high-temperature steam can be precisely sprayed through these vent holes onto the coal tar accumulation area to heat the hardened coal tar and melt it quickly.

[0031] 2. Discharge of melted coal tar: The coal tar melted in the upper part of the valve body 5 and inside the valve cover 2 can be discharged through the valve cover drain hole 13 opened on the valve cover 2 (the valve cover drain hole 13 is connected to the inner cavity of the valve body 5).

[0032] The coal tar melted in the lower part of valve body 5 and valve body base 12 will be temporarily stored in the space outside the sealing surface if the valve is closed. After the valve is opened (gate 7 rises to the inner cavity of valve cover 2), it can flow into the pipeline along with the pipeline medium and be completely discharged.

[0033] 3. Auxiliary cleaning of coal tar on slide rail 4: During the opening and closing of the valve, the sliding shovel structure set at the connection between gate 7 and slide rail 4 will move synchronously with the rise and fall of gate 7, which can automatically scrape off the coal tar impurities attached to the surface of slide rail 4, avoid the accumulation of dirt on slide rail 4 from affecting the sliding accuracy of gate 7, and further ensure the cleaning effect and the reliability of valve operation.

[0034] III. The auxiliary working principle of automated timed cleaning To achieve automated cleaning, intelligent networked ball valves can be connected to both the blow hole 9 and the drain hole 13 on the valve cover. The drain hole 13 on the valve cover can be connected to an additional pipe or impurity collection tank. By remotely controlling the opening and closing of the intelligent networked ball valves, high-temperature steam (entering the blow pipe through the blow hole 9) can be connected at regular intervals, and the drain hole 13 on the valve cover can be opened at regular intervals to discharge coal tar. This eliminates the need for manual on-site operation and enables timed cleaning of the valves, reducing maintenance costs.

[0035] In addition, the upper part of the blow pipe 6 is connected to the inner wall of the valve body 5 and the inner wall of the valve cover 2 by a partial weld, and the lower part of the blow pipe 10 is connected to the inner wall of the valve body 5 by a partial weld. This can ensure the stability of the blow pipe under high temperature steam impact, avoid pipe displacement or damage, and ensure the continuous reliability of the cleaning process.

[0036] The above description only describes the preferred embodiments of the present utility model. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model, and all such changes should be included within the protection scope of the present utility model.

Claims

1. A horizontally placed gate valve capable of quickly removing coal tar, comprising a valve body (5), a valve cover (2), a valve rod (3), a gate plate (7) and a valve body base (12), characterized in that: It also includes a slide rail (4), an upper part of the blow pipe (6), a lower part of the blow pipe (10), at least two blow holes (9) and at least one valve cover drain hole (13). The valve cover (2) covers the top of the valve body (5), and the valve stem (3) passes through the valve cover (2) and is fixedly connected to the gate (7) to drive the gate (7) to rise and fall; The valve body (5) has valve body slide rail holes (11) on both sides of its inner wall. The valve cover (2) has valve cover slide rail holes (1) at the valve body slide rail holes (11). One end of the slide rail (4) passes through the valve body slide rail hole (11) and the other end passes through the valve cover slide rail hole (1). The gate (7) slides with the slide rail (4) and can only move along the axial direction of the slide rail (4). The blow holes (9) are symmetrically opened on both sides of the valve body (5). The upper part (6) and lower part (10) of the blow pipe are both located inside the valve body (5), and their two ends are respectively connected to the blow holes (9) on both sides of the valve body (5). The drain hole (13) of the valve cover is opened on the valve cover (2) and communicates with the inner cavity of the valve body (5).

2. A horizontal placed gate valve capable of quick removal of coal tar deposits according to claim 1, characterized in that: The upper part (6) of the blow-in pipe extends upward along the inner wall of the valve body (5) and is laid in accordance with the arc of the inner wall of the valve cover (2). The upper part (6) of the blow-in pipe bypasses the slide rail (4) and the valve stem (3) without interfering with them. The lower part (10) of the blow-in pipe extends downward along the inner wall of the valve body (5) to the internal space of the valve body base (12) and bypasses the top wedge (14) inside the valve body (5).

3. A horizontal placed gate valve capable of quick removal of coal tar deposits according to claim 1, wherein: Both the upper (6) and lower (10) sections of the injection pipeline are provided with air outlets spaced apart, and the air outlets are oriented towards the positions in the valve body where coal tar is easily accumulated.

4. A horizontal placed gate valve capable of quick removal of coal tar deposits according to claim 1, wherein: The gate (7) is also provided with rollers (8), which roll in cooperation with the inner wall of the valve body (5) to assist the gate (7) in moving along the slide rail (4).

5. A horizontal placed gate valve capable of quick removal of coal tar deposits according to claim 1, wherein: The upper part (6) of the blow-off pipe is connected to the inner wall of the valve body (5) and the inner wall of the valve cover (2) by a disconnected weld; the lower part (10) of the blow-off pipe is connected to the inner wall of the valve body (5) by a disconnected weld.

6. A horizontal placed gate valve capable of quick removal of coal tar deposits according to claim 1, wherein: The connection between the gate (7) and the slide rail (4) is provided with a shovel structure. The shovel structure moves up and down with the gate (7) to scrape off the coal tar impurities attached to the surface of the slide rail (4).

7. A horizontal placed gate valve capable of quick removal of coal tar deposits according to claim 1, wherein: Both the blow hole (9) and the drain hole (13) of the valve cover are connected to an intelligent networked ball valve; the drain hole (13) of the valve cover is also connected to a pipe or impurity collection bucket, and remote control and timed cleaning are realized through the intelligent networked ball valve.

8. A horizontal placed gate valve capable of quick removal of coal tar deposits according to claim 1, wherein: The blow hole (9) is connected to a high-temperature steam source. The high-temperature steam is injected into the valve body through the air outlet of the upper part (6) and the lower part (10) of the blow pipe to heat and melt the coal tar.

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