Mounting structure of high-temperature-resistant hydraulic gate valve for rotary kiln

Abstract

The utility model discloses a kind of installation structures of high-temperature-resistant hydraulic gate valve for rotary kiln, involve gate valve technical field.The utility model includes core device rotary kiln, the rotary kiln right side bottom is equipped with discharge pipe, further include discharging mechanism, the discharging mechanism is installed on discharge pipe, the discharging mechanism includes control quantity subassembly, the control quantity subassembly is installed on discharge pipe.The utility model is by being provided with reinforcing component, specifically in the inner wall welding of valve shell top feed inlet flow guide ring, guiding material flows along conical surface, prevent direct impact valve plate and valve shell inner wall, reduce abrasion and stress concentration, the pull bar is welded in the inner wall of valve plate internal circular hole, the pull bar inner ring is equipped with multiple parallel upper and lower annular grooves, pull bar can enhance valve plate strength, reduce high-temperature deformation or cracking condition, annular groove enhances its toughness, the pull bar inner ring of valve plate center circular hole is opened with fillet surface to slow down material impact, and through center circular hole blanking, when moving, material infiltrated in valve shell can be scraped out, reduce accumulation.

Description

Technical Field

[0001] This utility model belongs to the field of slide gate valve technology, and in particular relates to the installation structure of a high-temperature resistant hydraulic slide gate valve for rotary kilns. Background Technology

[0002] Rotary kilns, as indispensable thermal equipment in building materials, metallurgy, chemical industry and other fields, are widely used in high-temperature operation scenarios such as cement clinker calcination, metal mineral smelting, and chemical raw material roasting. In the material conveying and discharge system of rotary kilns, hydraulic slide gate valves, as key flow control and on / off actuators, directly affect the stability of the entire production process, material utilization rate and equipment service life. Their core working environment is usually accompanied by high-temperature material impact above 400°C and continuous wear of particulate materials. At the same time, they need to withstand the mechanical stress generated during hydraulic drive. Therefore, stringent requirements are placed on the high temperature resistance, wear resistance and structural strength of the valve body structure.

[0003] Existing hydraulic slide gate valves for rotary kilns have gradually revealed numerous structural defects during long-term operation under high-temperature conditions, leading to high equipment failure rates, increased maintenance costs, and severely restricting production efficiency. Specifically, the main problems are as follows: First, when material enters the valve body from the feed pipe, it typically impacts the valve plate and the inner wall of the valve body in a direct manner, causing localized concentrated wear in the impact area. Simultaneously, the impact of high-speed material causes instantaneous stress concentration between the valve body and the valve plate, which, under long-term action, easily leads to pitting on the inner wall of the valve body and edge curling of the valve plate, shortening the overall service life of the valve body. Second, as a core flow control component, the valve plate needs to withstand frequent material impacts and hydraulic driving forces in a high-temperature environment. Currently, most valve plates are made of a single material and are integrally cast. The lack of a targeted reinforcement structure makes the valve plate prone to deformation and cracking in the central area under the combined effects of high-temperature creep and mechanical loads. This not only affects the accuracy of flow control but may also lead to material leakage due to valve plate seal failure. Thirdly, although some valve plates have added simple reinforcing ribs, the connection strength between the reinforcing ribs and the valve plate body is insufficient, and the reinforcing ribs themselves have poor toughness. They are prone to fatigue fracture under repeated impacts and cannot achieve a long-term strengthening effect. In addition, the edges of the central discharge hole of the valve plate are mostly designed with right angles, which further aggravates the local impact wear when the material passes through. At the same time, the right angle structure is prone to material accumulation, causing the valve plate to jam and affecting the accuracy of flow control. Therefore, an installation structure for a high-temperature resistant hydraulic slide gate valve for rotary kilns is proposed. Utility Model Content

[0004] The purpose of this utility model is to provide an installation structure for a high-temperature resistant hydraulic slide gate valve for rotary kilns. By incorporating reinforcing components, specifically a conical guide ring welded to the inner wall of the feed inlet at the top of the valve housing, the material is guided to flow along the conical surface, preventing direct impact on the valve plate and the inner wall of the valve housing, thus reducing wear and stress concentration. A tie rod is welded to the inner wall of the circular hole inside the valve plate, with multiple parallel annular grooves on its inner ring. Both the guide ring and the tie rod are integrally cast from chromium-containing cast iron. The tie rod enhances the strength of the valve plate, reducing the likelihood of high-temperature deformation or cracking, while the annular grooves improve its toughness. A rounded corner is cut into the inner ring of the central circular hole of the valve plate to mitigate material impact. Furthermore, material fed through the central circular hole can be scraped out during movement, preventing material accumulation within the valve housing. This solves the problem that existing hydraulic slide gate valves for rotary kilns gradually reveal numerous structural defects during long-term high-temperature operation, leading to high equipment failure rates, increased maintenance costs, and severely restricting production efficiency.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model relates to an installation structure for a high-temperature resistant hydraulic slide gate valve for a rotary kiln. It includes a core component, the rotary kiln, with a discharge pipe installed at the bottom right side. The discharge mechanism is mounted on the discharge pipe and includes a quantity control component mounted on the discharge pipe, a reinforcement component mounted on the quantity control component, and an auxiliary component mounted on the quantity control component. The quantity control component includes a valve housing with a valve plate inside. A circular hole is formed at the center of the valve plate. The reinforcement component includes a tie rod fixed to the inner ring of the circular hole. Several annular grooves are formed on the inner ring of the tie rod. A guide ring is positioned above the tie rod, and the outer ring of the guide ring is fixedly connected to the inner wall of the feed inlet at the top of the valve housing. A buffer is formed on the circular hole. The several annular grooves are arranged parallel vertically and are used to enhance the toughness of the tie rod.

[0007] Furthermore, flanges are installed at both the top inlet and the bottom outlet of the valve housing. The valve housing is fixedly connected to the discharge pipe via two flanges. A hydraulic cylinder is bolted to the front of the valve housing, and a sealing gasket is provided at the connection between the flange and the discharge pipe.

[0008] Furthermore, a valve stem is fixedly connected to the output end of the back of the hydraulic cylinder. The valve stem passes through the valve shell and extends into the cavity. The hydraulic cylinder provides power output for material feeding control.

[0009] Furthermore, the end of the valve stem away from the valve housing is fixedly connected to the front of the valve plate. Several balls are installed on the left and right sides inside the valve housing cavity. The balls are arranged in two groups, and the outer surfaces of the two groups of balls contact the left and right sides of the valve plate, respectively. The two groups of balls are used to reduce the friction between the valve plate and the valve housing.

[0010] Furthermore, the auxiliary component includes several transverse heat dissipation holes opened inside the valve plate, and several longitudinal heat dissipation holes are opened inside the valve plate. The transverse heat dissipation holes and the longitudinal heat dissipation holes are staggered, and the transverse heat dissipation holes and the longitudinal heat dissipation holes are used for heat dissipation of the valve plate.

[0011] Furthermore, the top and bottom of the valve plate are in contact with sealing rings, and the two sealing rings on the side away from the valve plate are respectively fixedly connected to the top and bottom of the inner wall of the valve housing cavity. Both sealing rings are designed to withstand high temperatures.

[0012] Furthermore, the buffer includes two rounded corner surfaces formed on the inner ring of the circular hole. The two rounded corner surfaces are arranged symmetrically from top to bottom and are used to reduce the impact of materials on the valve plate.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model incorporates a reinforcing component, specifically a guide ring welded to the inner wall of the feed inlet at the top of the valve body. This guide ring has a conical structure, guiding the material to flow along the conical surface, preventing direct impact on the valve plate and the inner wall of the valve body, and reducing wear and stress concentration. A tie rod is welded to the inner wall of the circular hole inside the valve plate. The inner ring of this tie rod has multiple parallel vertical annular grooves. Both the guide ring and the tie rod are integrally cast from chromium-containing cast iron. The tie rod can enhance the strength of the valve plate and reduce the possibility of high-temperature deformation or cracking. The annular grooves improve its toughness. The inner ring of the central circular hole of the valve plate has a rounded corner to reduce material impact. Furthermore, the material is fed through the central circular hole, and during movement, it can scrape out the material that has seeped into the valve body, reducing accumulation.

[0015] 2. This utility model incorporates auxiliary components, specifically horizontal and vertical heat dissipation holes inside the valve plate, forming a cross-heat dissipation network: the horizontal heat dissipation holes quickly dissipate radial heat, while the vertical heat dissipation holes accelerate axial heat transfer. Together, they rapidly dissipate the high temperature of the material transferred to the valve plate to the outside, enhancing the temperature tolerance of core components such as the valve shell and valve plate, effectively extending equipment life and reducing the risk of deformation and breakage. The valve shell inner wall is fitted with a sealing ring made of high-temperature resistant elastic material, which remains in close contact with the valve plate surface during the sliding process. This not only prevents material particles from leaking through gaps but also prevents external cold air from intruding to stabilize the rotary kiln discharge temperature, while reducing the contamination of the valve plate sliding surface by high-temperature dust.

[0016] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the valve housing of this utility model;

[0020] Figure 3 This is a schematic diagram of the cross-sectional structure of the valve shell of this utility model;

[0021] Figure 4 This is a schematic diagram of the overall structure of the tie rod of this utility model;

[0022] Figure 5 This utility model Figure 4 A magnified structural diagram of A in the middle;

[0023] Figure 6 This is a schematic diagram of the overall structure of the sealing ring of this utility model.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 111. Rotary kiln; 112. Discharge pipe; 2. Discharge mechanism; 21. Metering control component; 211. Valve body; 212. Flange; 213. Hydraulic cylinder; 214. Valve stem; 215. Valve plate; 216. Ball bearing; 22. Reinforcing component; 221. Guide ring; 222. Tie; 223. Rounded corner; 224. Annular groove; 23. Auxiliary component; 231. Transverse heat dissipation hole; 232. Longitudinal heat dissipation hole; 233. Sealing ring. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0027] Please see Figures 1-6As shown, this utility model is an installation structure for a high-temperature resistant hydraulic slide gate valve for a rotary kiln. It includes a core device, a rotary kiln 111, with a discharge pipe 112 installed at the bottom right side of the rotary kiln 111. It also includes a discharge mechanism 2, mounted on the discharge pipe 112. The discharge mechanism 2 includes a quantity control component 21, mounted on the discharge pipe 112; a reinforcing component 22, mounted on the quantity control component 21; and an auxiliary component 23, mounted on the quantity control component 21. The quantity control component 21 includes a valve housing 211, with a valve plate 215 inside the cavity of the valve housing 211. A circular hole is formed at the center of the valve plate 215. The reinforcing component 22 includes a tie rod 222 fixed to the inner ring of the circular hole. The valve plate 21 has several annular grooves 224. A guide ring 221 is placed above the tie rod 222. The outer ring of the guide ring 221 is fixedly connected to the inner wall of the feed inlet at the top of the valve body 211. A buffer is provided on the circular hole. The several annular grooves 224 are arranged vertically and parallel to each other. The several annular grooves 224 are used to enhance the toughness of the tie rod 222. The guide ring 221 is welded to the inner wall of the feed inlet at the top of the valve body 211. It has a conical structure and guides the material to flow along the conical surface to prevent direct impact on the valve plate 215 and the inner wall of the valve body 211, thereby reducing wear and stress concentration. The inner wall of the circular hole inside the valve plate 215 is welded with a tie rod 222. The inner ring of the tie rod 222 has several parallel vertical annular grooves 224. Both the guide ring 221 and the tie rod 222 are integrally cast from chromium-containing cast iron. 222 enhances the strength of valve plate 215, reducing the likelihood of high-temperature deformation or cracking. The annular groove 224 improves its toughness. A rounded corner 223 is cut into the inner ring of the central hole of valve plate 215 to mitigate material impact. Material is discharged through the central hole, and during movement, it scrapes out material that has seeped into valve housing 211, reducing accumulation. Flanges 212 are installed at both the top inlet and bottom outlet of valve housing 211. Valve housing 211 is fixedly connected to discharge pipe 112 via two flanges 212. A hydraulic cylinder 213 is bolted to the front of valve housing 211. A sealing gasket is installed at the connection between flange 212 and discharge pipe 112. A valve stem 214 is fixedly connected to the output end of hydraulic cylinder 213 on the back. The valve stem 214 penetrates valve housing 211 and extends into the cavity. For power output control during material feeding, the end of valve stem 214 furthest from valve housing 211 is fixedly connected to the front of valve plate 215. Several ball bearings 216 are installed on both the left and right sides of the valve housing 211 cavity. These ball bearings 216 are arranged in two sets, with their outer surfaces contacting the left and right sides of valve plate 215 respectively. These two sets of ball bearings 216 reduce friction between valve plate 215 and valve housing 211. The auxiliary component 23 includes several transverse heat dissipation holes 231 inside valve plate 215 and several longitudinal heat dissipation holes 232 inside valve plate 215. The transverse and longitudinal heat dissipation holes 231 and 232 are staggered, serving to dissipate heat from valve plate 215.The valve plate 215 has sealing rings 233 in contact with both its top and bottom. The sides of the two sealing rings 233 furthest from the valve plate 215 are fixedly connected to the top and bottom of the inner wall of the valve housing 211 cavity, respectively. Both sealing rings 233 are designed to withstand high temperatures. The valve plate 215 has transverse heat dissipation holes 231 and longitudinal heat dissipation holes 232 inside, forming a cross-heat dissipation network: the transverse heat dissipation holes 231 quickly dissipate radial heat, and the longitudinal heat dissipation holes 232 accelerate axial heat transfer. Together, they rapidly dissipate the high temperature of the material conducted to the valve plate 215 to the outside, enhancing the temperature tolerance of core components such as the valve housing 211 and valve plate 215. To effectively extend equipment life and reduce the risk of deformation and breakage, a high-temperature resistant elastic material sealing ring 233 is fitted to the inner wall of the valve body 211. This ring remains in close contact with the valve plate 215 surface during sliding, preventing material particles from leaking through gaps and blocking the intrusion of cold air to stabilize the discharge temperature of the rotary kiln 111. It also reduces the contamination of the sliding surface of the valve plate 215 by high-temperature dust. The buffer includes two rounded corner surfaces 223 on the inner ring of the circular hole, symmetrically arranged vertically. These two rounded corner surfaces 223 reduce the impact of material on the valve plate 215.

[0028] A specific application of this embodiment is as follows: In use, the valve body 211 and the discharge pipe 112 are first installed and fixed by the flange 212. In subsequent use, the hydraulic cylinder 213 is started to drive the valve stem 214 to move. During the movement of the valve stem 214, the valve plate 215 will move synchronously. The valve plate 215 has a circular hole at the center for material discharge. Several balls 216 are installed on both sides inside the valve body 211. During the movement of the valve plate 215, the balls 216 can convert the sliding friction between the valve plate 215 and the inner wall of the valve body 211 into rolling friction, which greatly reduces the frictional resistance, reduces the operation jamming caused by component expansion at high temperature, and reduces the wear of the valve plate 215 and the valve body 211, thus extending the service life.

[0029] Meanwhile, a guide ring 221 is welded to the inner wall of the feed inlet at the top of the valve body 211. The guide ring 221 has a conical structure. When the material enters the valve body 211 from the discharge pipe 112, it is guided by the guide ring 221 to flow along the conical surface, avoiding direct impact of the material on the valve plate 215 and the inner wall of the valve body 211, reducing local wear and stress concentration. At the same time, a tie rod 222 is welded to the inner wall of the circular hole inside the valve plate 215. Several annular grooves 224 are opened in the inner ring of the tie rod 222. The guide ring 221 and the guide ring 222 are integrally cast using chromium-containing cast iron as the casting material. The tie rod 222 can enhance the strength of the valve plate 215. The valve plate 215 is designed to reduce deformation or cracking due to high temperature, thus extending its service life. Additionally, the tie rod 222 has several parallel, vertically arranged annular grooves 224 on its inner ring, enhancing its toughness and extending the service life of both the tie rod 222 and the valve plate 215. Furthermore, the valve plate 215 has a rounded corner cut surface 223 in the inner ring of its central hole, reducing the impact of materials on the valve plate 215. Moreover, the central hole in the valve plate 215 allows for material feeding, enabling the scraping out of materials that have seeped into the valve shell 211 during movement control, reducing material accumulation inside the valve shell 211.

[0030] Meanwhile, the transverse heat dissipation holes 231 and the longitudinal heat dissipation holes 232 form a cross heat dissipation network inside the valve plate 215. The transverse heat dissipation holes 231 quickly dissipate the radial heat of the valve plate 215, while the longitudinal heat dissipation holes 232 accelerate the axial heat transfer of the valve plate 215. The combination of the two can quickly dissipate the high temperature of the material conducted to the valve plate 215 to the outside, so that the temperature of the core components such as the valve shell 211 and the valve plate 215 is maintained within the tolerance range, which further improves the service life of the equipment and reduces the occurrence of deformation and cracking. At the same time, a sealing ring 233 is installed on the inner wall of the valve shell 211. The sealing ring 233 is made of high temperature resistant elastic material, such as ceramic fiber reinforced graphite composite material. During the sliding process of the valve plate 215, the sealing ring 233 is always in close contact with the surface of the valve plate 215. On the one hand, it prevents material particles from leaking from the gap between the valve plate 215 and the valve shell 211. On the other hand, it reduces the impact of cold air from the outside entering the valve shell 211 on the discharge temperature stability of the rotary kiln 111. It can also reduce the contamination of the sliding surface of the valve plate 215 by high temperature dust.

[0031] This device adopts PLC automatic control. By setting parameters on the control panel, such as discharge rate and valve plate 215 opening and closing speed, the PLC sends control signals to the hydraulic cylinder 213 to adjust the extension and retraction stroke and speed of the piston rod of the hydraulic cylinder 213, thereby controlling the opening and closing degree of the valve plate 215. At the same time, temperature sensors and position sensors can be installed on the valve body 211 to monitor the temperature of the valve body 211 and the position of the valve plate 215 in real time. When the temperature exceeds the set threshold or the position of the valve plate 215 is abnormal, the PLC automatically issues an alarm signal, which facilitates timely handling by the operator.

[0032] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0033] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the present utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of the present utility model, thereby enabling those skilled in the art to better understand and utilize it. The present utility model is limited only by the claims and their full scope and equivalents.

Claims

1. An installation structure for a high-temperature resistant hydraulic slide gate valve for a rotary kiln, comprising a core component, a rotary kiln (111), wherein a discharge pipe (112) is installed at the bottom right side of the rotary kiln (111), characterized in that, Also includes: A discharge mechanism (2) is installed on a discharge pipe (112); The discharge mechanism (2) includes a quantity control component (21), which is installed on the discharge pipe (112); A reinforcement component (22) is mounted on the metering component (21); as well as An auxiliary component (23) is mounted on the control component (21); The quantity control component (21) includes a valve housing (211), and a valve plate (215) is provided inside the cavity of the valve housing (211). A circular hole is provided at the center of the valve plate (215). The reinforcing component (22) includes a tie rod (222) fixed on the inner ring of the circular hole. The inner ring of the tie rod (222) has several annular grooves (224). A guide ring (221) is provided above the tie rod (222). The outer ring of the guide ring (221) is fixedly connected to the inner wall of the feed inlet at the top of the valve body (211). A buffer is provided on the circular hole. Among them, several annular grooves (224) are arranged in parallel vertically, and several annular grooves (224) are used to enhance the toughness of the tie rod (222).

2. The installation structure of a high-temperature resistant hydraulic slide gate valve for a rotary kiln according to claim 1, characterized in that, The valve housing (211) is equipped with flanges (212) at both the top inlet and the bottom outlet. The valve housing (211) is fixedly connected to the discharge pipe (112) via two flanges (212). A hydraulic cylinder (213) is bolted to the front of the valve housing (211). A sealing gasket is provided at the connection between the flange (212) and the discharge pipe (112).

3. The installation structure of a high-temperature resistant hydraulic slide gate valve for a rotary kiln according to claim 2, characterized in that, A valve stem (214) is fixedly connected to the output end of the back of the hydraulic cylinder (213). The valve stem (214) passes through the valve shell (211) and extends into the cavity. The hydraulic cylinder (213) provides power output for material feeding control.

4. The installation structure of a high-temperature resistant hydraulic slide gate valve for a rotary kiln according to claim 3, characterized in that, The valve stem (214) is fixedly connected to the front of the valve plate (215) at one end away from the valve housing (211). Several balls (216) are installed on the left and right sides of the cavity inside the valve housing (211). The balls (216) are arranged in two groups, and the outer surfaces of the two groups of balls (216) are in contact with the left and right sides of the valve plate (215) respectively. Two sets of balls (216) are used to reduce the friction between the valve plate (215) and the valve body (211).

5. The installation structure of a high-temperature resistant hydraulic slide gate valve for a rotary kiln according to claim 1, characterized in that, The auxiliary component (23) includes a number of transverse heat dissipation holes (231) opened inside the valve plate (215), and a number of longitudinal heat dissipation holes (232) are opened inside the valve plate (215). The number of transverse heat dissipation holes (231) and the number of longitudinal heat dissipation holes (232) are staggered. The horizontal heat dissipation holes (231) and the vertical heat dissipation holes (232) are used for heat dissipation of the valve plate (215).

6. The installation structure of a high-temperature resistant hydraulic slide gate valve for a rotary kiln according to claim 5, characterized in that, The valve plate (215) is in contact with sealing rings (233) at both the top and bottom. The two sealing rings (233) are fixedly connected to the top and bottom of the inner wall of the valve housing (211) respectively on the side away from the valve plate (215). Both sealing rings (233) are designed to withstand high temperatures.

7. The installation structure of a high-temperature resistant hydraulic slide gate valve for a rotary kiln according to claim 1, characterized in that, The buffer includes a rounded corner section (223) formed on the inner ring of the circular hole. There are two rounded corner sections (223), and the two rounded corner sections (223) are arranged symmetrically from top to bottom. Among them, the two rounded corners (223) are used to reduce the impact of materials on the valve plate (215).

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