plug-in valve

Abstract

The utility model provides a kind of plug-in valve, belong to flue valve technical field, including valve box, valve plate, drive assembly and material level sensor;Valve box has the main cavity and auxiliary cavity of horizontal intercommunication, valve box is provided with valve hole corresponding main cavity penetration, the part of valve box is formed in main cavity below blowdown chamber;Valve plate is horizontally slidably connected in valve box, and is closed or opened valve hole under the driving of drive assembly;Material level sensor is arranged in blowdown chamber to detect the dust height accumulated in blowdown chamber.The plug-in valve provided by the utility model has blowdown chamber below main cavity, which can avoid dust deposition in main cavity, and simultaneously utilizes material level sensor to detect the dust height accumulated in blowdown chamber in real time, so as to grasp dust accumulation in real time to facilitate timely dust removal, thereby avoiding excessive dust accumulation to affect normal opening and closing movement of valve plate, and improving the operation reliability of plug-in valve under harsh dusty working conditions.

Description

Technical Field

[0001] This utility model belongs to the field of flue valve technology, specifically relating to a slide gate valve. Background Technology

[0002] In belt sintering machine systems, the main flue is a crucial channel connecting the sintering machine's air box and the main shaft fan, responsible for conveying high-temperature, high-dust, and corrosive sintering flue gas. Due to the extremely harsh operating conditions of the main flue (temperatures can reach 150~400℃ and dust content is high), the valves used for cutting off high-temperature, dusty flue gas media must meet requirements such as high temperature resistance, wear resistance, and corrosion resistance.

[0003] Currently, butterfly valves and slide gate valves are commonly used in the main flue of sintering machines. Due to their structural limitations, butterfly valves often experience difficulty opening due to dust accumulation inside the pipe, while slide gate valves are prone to incomplete closure due to dust buildup. Therefore, a more reliable valve solution is urgently needed for such dusty and harsh operating conditions. Utility Model Content

[0004] This utility model provides a slide gate valve, which aims to improve the working reliability of the slide gate valve under harsh and dusty working conditions.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is: to provide a slide gate valve, comprising: The valve box has a main cavity and a secondary cavity that are horizontally connected. A valve hole is provided through the main cavity of the valve box, and a sewage discharge chamber is formed at the part of the valve box located below the main cavity. The valve plate is horizontally slidably connected inside the valve box. It has a closed position that slides into the main cavity and blocks the valve hole, and an open position that slides into the secondary cavity to avoid the valve hole. The drive assembly is located in the valve box and its output end is connected to the valve plate. The drive assembly is used to drive the valve plate to switch between the closed position and the open position. The material level sensor is located inside the sewage discharge chamber and is used to detect the height of dust accumulated inside the sewage discharge chamber.

[0006] In one possible implementation, the top of the main cavity and the auxiliary cavity are provided with several pairs of horizontally aligned support rollers, with a clearance gap between each pair of support rollers; the top of the valve plate has a hanger that extends upward through the clearance gap and always overlaps with at least two pairs of support rollers.

[0007] In some embodiments, the drive assembly includes a rotary power component and a drive wheel, the drive wheel being rotatably connected to the junction area of ​​the main cavity and the auxiliary cavity, the rotary power component being fixed to the valve box and its output end being connected to the drive wheel; a linear driven component is fixedly connected to the top surface of the hanger, the linear driven component being connected to the drive wheel to obtain a linear driving force.

[0008] For example, the drive wheel is a gear or sprocket, and the linear driven component is a rack of meshing gears or a chain of meshing sprockets.

[0009] For example, the top of the valve box is provided with a baffle that extends horizontally from the primary cavity to the secondary cavity, and the baffle covers the area below each pair of support rollers.

[0010] In one possible implementation, two rows of rollers are distributed vertically at intervals in both the main cavity and the auxiliary cavity, and each roller consists of two rollers that are respectively rolled on both sides of the valve plate.

[0011] In some embodiments, several cleaning ports are spaced apart at the top and bottom of the valve box, and each cleaning port can be detachably connected with a cover.

[0012] For example, the valve plate includes an inner frame and corrosion-resistant panels attached to both sides of the inner frame.

[0013] In some embodiments, the valve box includes a main box and a secondary box that are fixedly connected; wherein, the main box is provided with a valve hole, the internal space of the main box surrounding the valve hole forms a main cavity, and the bottom of the main box forms a conical sewage discharge chamber.

[0014] In some embodiments, the bottom of the main housing is provided with a drain port that communicates with the drain chamber, and the drain port is connected to an ash discharge valve; wherein, the ash discharge valve is opened when the material level sensor detects that the dust height exceeds a set value.

[0015] The beneficial effects of the slide gate valve provided by this utility model are as follows: Compared with the prior art, the slide gate valve of this utility model drives the valve plate to move in the housing through the drive component. When the valve plate moves to the main cavity and reaches the closed position, it can block the valve hole, thereby cutting off the medium flowing through the valve hole. When the drive component drives the valve plate to move to the secondary cavity and reaches the closed position, the valve plate completely avoids the side of the valve hole, allowing the medium to flow normally through the valve hole. Since the valve hole is opened and closed by using the drive component to drive the valve plate to move horizontally, compared with the method of moving the valve plate up and down, it can avoid the dust deposited in the valve hole from supporting the valve plate and affecting the tightness of the closure. The main chamber has a dust discharge chamber at the bottom, so dust mixed in with the flue gas flowing through the valve hole can fall into the discharge chamber by its own weight, thus preventing dust from accumulating in the main chamber and affecting the normal movement of the valve plate. In addition, by installing a level sensor in the discharge chamber, the height of the dust accumulated in the discharge chamber can be detected in real time. This allows the operator to open the discharge chamber in time to discharge the dust when the dust height is too high, thus preventing the accumulated dust from affecting the normal movement of the valve plate and further improving the operational reliability of the slide gate valve under harsh and dusty conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the slide gate valve provided in an embodiment of the present invention when the valve plate is in the closed position; Figure 2 This is a schematic diagram of the connection structure between the drive assembly and the valve plate used in the embodiment of this utility model; Figure 3 This is a schematic diagram of the connection structure between the valve plate and the valve box used in an embodiment of this utility model; Figure 4 This is a schematic diagram of the valve plate used in an embodiment of the present invention.

[0017] In the diagram: 10. Valve box; 101. Main cavity; 102. Secondary cavity; 103. Valve hole; 104. Drainage chamber; 105. Cover; 106. Drainage port; 11. Main housing; 12. Secondary housing; 20. Valve plate; 201. Hanger; 202. Linear driven component; 21. Inner frame; 22. Corrosion-resistant panel; 30. Drive assembly; 31. Rotary power component; 32. Drive wheel; 40. Material level sensor; 50. Support roller; 500. Clearance gap; 60. Baffle; 70. Double roller. Detailed Implementation

[0018] To make the technical problems, technical solutions, and beneficial effects of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0019] It should be noted that when an element is referred to as being "set on" or "connected to" another element, it can be directly on or indirectly on the other element. It should be understood that the terms "upper," "lower," "front," "rear," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. The terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" or "several" means two or more, unless otherwise explicitly specified.

[0020] Please refer to the following: Figures 1 to 4The following description uses the slide gate valve provided by this utility model as an example applied to the main flue of a sintering machine. The slide gate valve includes a valve box 10, a valve plate 20, a drive assembly 30, and a material level sensor 40. The valve box 10 has a horizontally connected main cavity 101 and a secondary cavity 102. A valve hole 103 is provided through the valve box 10 corresponding to the main cavity 101. A drain chamber 104 is formed at the portion of the valve box 10 located below the main cavity 101. The valve plate 20 is horizontally slidably connected within the valve box 10, having a closed position where it slides into the main cavity 101 and blocks the valve hole 103, and an open position where it slides into the secondary cavity 102 to avoid the valve hole 103. The drive assembly 30 is located within the valve box 10, and its output end is connected to the valve plate 20. The drive assembly 30 is used to switch the valve plate 20 between the closed and open positions. The material level sensor 40 is located within the drain chamber 104 and is used to detect the height of dust accumulated within the drain chamber 104.

[0021] It should be noted that, in this embodiment, flanges for connecting the sintering machine flue are provided on both sides of the valve box 10 around the valve hole 103. When the valve plate 20 enters the main cavity 101, it can cut off the flow of medium by blocking the valve hole 103. When the valve plate 20 moves to the secondary cavity 102, it can avoid the valve hole 103 and allow the medium to flow normally through the valve hole 103.

[0022] In this embodiment, the sliding fit between the valve plate 20 and the valve box 10 can be achieved by the cooperation between the track set on the inner wall of the main cavity 101 and the auxiliary cavity 102 and the valve plate 20. Considering that there is a drain cavity 104 below the main cavity 101, the valve plate 20 is preferably connected to the valve box 10 by a hanging sliding method.

[0023] In this embodiment, the drive component 30 can be an electric, hydraulic, or pneumatic telescopic cylinder, or a drive component that uses transmission elements to convert rotational power into linear driving force; no specific limitation is made here.

[0024] It should be understood that in this embodiment, the drain chamber 104 should have a door structure that can be opened manually or automatically. When the material level sensor 40 detects that the height of the dust accumulated in the drain chamber 104 exceeds a set value, the drain chamber 104 opens to discharge ash. Specifically, the material level sensor 40 is electrically connected to the sintering machine central control and feeds back the dust height data it detects to the sintering machine central control in real time. When the dust height data it acquires exceeds the set value, the sintering machine central control issues a warning signal, thereby reminding the operators in the central control room to promptly detect the excessive dust accumulation in the drain chamber 104 and take appropriate measures. The specific measures can be to manually open the drain chamber 104 on-site to discharge ash, or to send an action command to the automatic door located in the drain chamber 104 through the sintering machine central control to discharge ash.

[0025] In this embodiment, the level sensor 40 can be a traditional level sensor 40 used to detect granular or powdery solid materials, or it can be a proximity sensor. When the dust accumulated in the sewage discharge chamber 104 approaches or touches the sensing end of the proximity sensor, a sensing signal can be triggered. After receiving the sensing signal, the sintering machine central control will issue an early warning to provide operators with timely dust removal.

[0026] Compared with the prior art, the slide gate valve provided in this embodiment uses a drive assembly 30 to move the valve plate 20 within the housing. When the valve plate 20 moves to the main cavity 101 and reaches the closed position, it can block the valve hole 103, thereby cutting off the medium flowing through the valve hole 103. When the drive assembly 30 moves the valve plate 20 to the secondary cavity 102 and reaches the closed position, the valve plate 20 completely avoids the side of the valve hole 103, allowing the medium to flow normally through the valve hole 103. Since the valve hole 103 is opened and closed by using the drive assembly 30 to move the valve plate 20 in a translational manner, compared with the up-and-down movement of the valve plate 20, it can avoid the dust deposited in the valve hole 103 from supporting the valve plate 20 and affecting the tightness of the closure. The main chamber 101 has a dust discharge chamber 104 below it, which can accommodate dust. Therefore, the dust mixed in with the flue gas flowing through the valve hole 103 can fall into the dust discharge chamber 104 by its own weight, thereby preventing dust from accumulating in the main chamber 101 and affecting the normal movement of the valve plate 20. On this basis, by installing a material level sensor 40 in the dust discharge chamber 104, the material level sensor 40 can detect the height of the dust accumulated in the dust discharge chamber 104 in real time. This allows the operator to open the dust discharge chamber 104 in time to discharge the dust when the dust height is too high, thereby preventing the accumulated dust from affecting the normal movement of the valve plate 20 and further improving the operational reliability of the slide gate valve under harsh and dusty conditions.

[0027] In some embodiments, see Figure 1 and Figure 2 The top of the main cavity 101 and the auxiliary cavity 102 are provided with several pairs of horizontally aligned support rollers 50, and there is a clearance gap 500 between each pair of support rollers 50; the top of the valve plate 20 has a hanger 201, which passes upward through the clearance gap 500 and always overlaps with at least two pairs of support rollers 50.

[0028] It should be explained that axially aligned support rollers 50 are rotatably connected to the inner walls of both sides of the housing. The two axially aligned support rollers 50 form a pair of support brackets 201. Considering that the brackets 201 need to pass through the clearance joint 500 and overlap the support rollers 50, the brackets 201 can adopt a T-shaped structure. That is, the brackets 201 are T-shaped steel or steel components welded into a T-shape by vertical plates and horizontal plates. The vertical plates are used to pass through the clearance joint 500, and the horizontal plates overlap the support rollers 50. Thus, the brackets 201 are used to realize the hanging connection of the valve plate 20. Compared with the conventional sliding connection method, the use of support rollers 50 can not only improve the ease of movement of the valve plate 20, but also keep the valve plate 20 in a suspended state to avoid the dust accumulated at the bottom from hindering the movement of the valve plate 20, further improving the smoothness of the valve plate 20's opening and closing and the reliability of its operation.

[0029] As one specific implementation of the aforementioned driving component 30, please refer to Figure 2 The drive assembly 30 includes a rotary power component 31 and a drive wheel 32. The drive wheel 32 is rotatably connected to the contact area between the main cavity 101 and the secondary cavity 102. The rotary power component 31 is fixed to the valve box 10 and its output end is connected to the drive wheel 32. A linear driven component 202 is fixedly connected to the top surface of the hanger 201. The linear driven component 202 is connected to the drive wheel 32 to obtain linear driving force.

[0030] Considering that traditional telescopic drive components have a high failure rate in harsh and dusty working environments, a rotary power component 31, such as a motor, is used as the power source. The rotary power is converted into linear driving force through the cooperation of the drive wheel 32 and the linear driven component 202, thereby driving the valve plate 20 to move, thereby improving the operational stability.

[0031] Optionally, such as Figure 2 As shown, in this embodiment, the drive wheel 32 is a gear or a sprocket, and the linear driven component 202 is a rack meshing with a gear or a chain meshing with a sprocket. The drive wheel 32 is a gear, and the linear driven component 202 is a rack fixed to the top surface of the hanger 201. The gear is rotated by the rotating power component 31, which drives the rack to move linearly, thus achieving the translational movement of the valve plate 20. Similarly, the drive wheel 32 is a sprocket, and the linear driven component 202 is a chain, achieving the same effect of the sprocket driving the chain to move linearly, thus ensuring smooth movement of the valve plate 20. This transmission structure, using gears and racks or sprockets and chains, is highly adaptable to harsh, dusty environments and provides stable and reliable power transmission, which helps improve the operational reliability of the slide gate valve in harsh, dusty environments.

[0032] For some possible implementations, please refer to [link / reference]. Figure 2The top of the valve box 10 is provided with a baffle 60 extending horizontally from the primary cavity 101 to the secondary cavity 102, which covers the underside of each pair of support rollers 50. By setting the baffle 60, it can prevent rising dust from falling between the drive wheel 32 and the linear driven component 202 to a certain extent, thereby avoiding excessive dust accumulation on the drive wheel 32 and the linear driven component 202, which would increase transmission resistance or even cause transmission jamming, thus improving operational stability.

[0033] To improve the motion stability and reliability of the valve plate 20 in the closed state, such as Figure 3 As shown, in this embodiment, two rows of rollers 70 are distributed vertically at intervals within both the main cavity 101 and the secondary cavity 102. Each roller 70 includes two rollers that roll onto both sides of the valve plate 20. By setting the two rows of rollers 70, the valve plate 20 is clamped and constrained in the thickness direction, thereby preventing the valve plate 20 from shaking when subjected to the impact load of the medium and improving the connection stability of the valve plate 20.

[0034] In some embodiments, please refer to Figure 1 The valve box 10 has several cleaning ports spaced apart at its top and bottom, and each cleaning port is detachably connected to a cover 105. The cleaning port at the top of the valve box 10 allows observation of the dust accumulation on the top of the valve box 10 and the drive assembly 30 after the cover 105 is opened, and a cleaning tool can be inserted to sweep away the accumulated dust. The cleaning port at the bottom of the valve box 10 allows the fallen dust to be cleaned out from the main cavity 101 and the secondary cavity 102 after the cover 105 is opened. Therefore, the multiple cleaning ports improve the convenience of cleaning the valve box 10.

[0035] To improve the corrosion resistance of valve plate 20 and reduce its cost, please refer to [link / reference needed]. Figure 3 and Figure 4 The valve plate 20 includes an inner frame 21 and corrosion-resistant panels 22 attached to both sides of the inner frame 21. The inner frame 21 can be made of conventional steel, while the corrosion-resistant panels 22 can be made of corrosion-resistant stainless steel. By covering the inner frame 21 with the corrosion-resistant panels 22, the corrosion resistance can be improved while ensuring the overall structural strength of the valve plate 20. At the same time, compared with the method of making the entire valve plate 20 with corrosion-resistant materials, the corrosion protection cost of the valve plate 20 can be reduced.

[0036] As an optional embodiment of the valve box 10 described above, please refer to Figure 1 The valve box 10 includes a main box 11 and a secondary box 12 fixedly connected; wherein, the main box 11 is provided with a valve hole 103, the internal space of the main box 11 surrounding the valve hole 103 forms a main cavity 101, and the bottom of the main box 11 forms a conical sewage discharge cavity 104.

[0037] The valve box 10 adopts a separate connection structure of main box 11 and auxiliary box 12, which reduces the difficulty of processing and manufacturing, and also considers the convenience of disassembly and maintenance of valve plate 20 and drive assembly 30. The bottom of the main box 11 is set as a cone shape that gradually narrows from top to bottom, which allows dust falling from the main cavity 101 to slide down the cone wall of the drain cavity 104, thereby facilitating the external discharge and cleaning of dust accumulated in the drain cavity 104.

[0038] For some possible implementation methods, please refer to [link / reference]. Figure 1 The bottom of the main housing 11 is provided with a drain port 106 that communicates with the drain chamber 104. The drain port 106 is connected to an ash discharge valve (not shown in the figure). The ash discharge valve opens when the material level sensor 40 detects that the dust height exceeds the set value.

[0039] The ash discharge valve can be controlled by the central control of the sintering machine. When the material level sensor 40 detects that the dust height in the sludge discharge chamber 104 exceeds the set value, it sends a signal to the central control of the sintering machine. After receiving the signal, the central control of the sintering machine can issue an opening command to the ash discharge valve through manual operation or automatic operation, thereby realizing the automatic ash discharge of the sludge discharge chamber 104 and avoiding excessive dust accumulation in the sludge discharge chamber 104, which would affect the opening and closing action of the valve plate 20 and the tightness of the valve plate 20.

[0040] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A slide gate valve, characterized in that, include: The valve box has a main cavity and a secondary cavity that are horizontally connected. A valve hole is provided through the valve box corresponding to the main cavity. The part of the valve box located below the main cavity forms a sewage discharge chamber. The valve plate is horizontally slidably connected to the valve box, and has a closed position that slides into the main cavity and blocks the valve hole, and also has an open position that slides into the secondary cavity to avoid the valve hole; A drive assembly is disposed in the valve box and its output end is connected to the valve plate. The drive assembly is used to drive the valve plate to switch between the closed position and the open position. A level sensor is installed inside the sewage discharge chamber to detect the height of dust accumulated inside the sewage discharge chamber.

2. The slide gate valve as described in claim 1, characterized in that, The top of the main cavity and the secondary cavity are provided with several pairs of horizontally aligned support rollers at intervals, and there is a clearance gap between each pair of support rollers; the top of the valve plate has a hanger, which passes upward through the clearance gap and always overlaps with at least two pairs of support rollers.

3. The slide gate valve as described in claim 2, characterized in that, The drive assembly includes a rotary power component and a drive wheel. The drive wheel is rotatably connected to the junction area of ​​the main cavity and the auxiliary cavity. The rotary power component is fixed to the valve box and its output end is connected to the drive wheel. A linear driven component is fixedly connected to the top surface of the hanger. The linear driven component is connected to the drive wheel to obtain a linear driving force.

4. The slide gate valve as described in claim 3, characterized in that, The drive wheel is a gear or a sprocket, and the linear driven component is a rack meshing with the gear or a chain meshing with the sprocket.

5. The slide gate valve as described in claim 2, characterized in that, The valve box is provided with a baffle extending horizontally from the main cavity to the auxiliary cavity at its top, and the baffle covers the underside of each pair of support rollers.

6. The slide gate valve as described in claim 1, characterized in that, Both the main cavity and the auxiliary cavity have two rows of rollers spaced vertically apart, each roller consisting of two rollers that roll on both sides of the valve plate.

7. The slide gate valve as described in claim 1, characterized in that, The valve box has several cleaning ports spaced apart at the top and bottom, and each cleaning port can be detachably connected with a cover.

8. The slide gate valve as described in claim 1, characterized in that, The valve plate includes an inner frame and corrosion-resistant panels attached to both sides of the inner frame.

9. The slide gate valve according to any one of claims 1-8, characterized in that, The valve box includes a main box and a secondary box that are fixedly connected; wherein, the main box is provided with the valve hole, the internal space of the main box surrounding the valve hole forms the main cavity, and the bottom of the main box forms the conical sewage discharge cavity.

10. The slide gate valve as described in claim 9, characterized in that, The bottom of the main housing is provided with a drain port that communicates with the drain chamber, and the drain port is connected to an ash discharge valve; wherein, the ash discharge valve opens when the material level sensor detects that the dust height exceeds a set value.

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