High-temperature wear-resistant flashboard control valve

Abstract

A high-temperature wear-resistant flashboard control valve comprises a valve body, a wedge-shaped seat ring is installed on a support in a floating mode, and the upper end face of the support is a wedge face. The gate plate is arranged at the end part of the valve rod and is in sliding fit with the wedge-shaped seat ring; the flashboard pushes the wedge-shaped seat ring through the elastic block to be in wedge surface fit with the upper end surface of the bracket; the fixed end of the elastic block is fixed through a screw, a guide screw is arranged at the movable end, and one end of the guide screw is in sliding fit with the guide groove to achieve horizontal movement of the movable end of the elastic block on the lower end face of the flashboard. Through the combination of the gate plate and the wedge-shaped seat ring, the advantages of a flat gate valve and a wedge gate valve are utilized, the sealing grade can be effectively improved, the high-temperature jamming phenomenon can be prevented, the valve body is internally hollowed, large-particle materials can smoothly pass through conveniently and cannot be jammed in the valve body, and through the design of an elastic block, a guide screw and a guide groove in the bottom of the gate plate, the sealing performance is improved. When the valve is at high temperature, the valve rod and the flashboard can smoothly extend, and the situation that the valve rod and the flashboard are tightly ejected is prevented.

Description

Technical Field

[0001] The invention relates to the technical field of valves, and in particular to a high-temperature wear-resistant plug-in control valve. Background Art

[0002] The existing high-temperature gate valve users discharge materials from the bottom of the high-temperature roasting furnace, and also use the discharge speed control to adjust the material. However, the material characteristics of the high-temperature roasting furnace are solid particles, with the largest particle size of 50mm, and toxic gases mixed inside the material. No leakage can occur, and the material temperature is 800-1000℃. In this case, large particles are prone to get stuck inside the valve body, and the valve stem and gate are stuck under high temperature conditions. In addition, the high-temperature gate valve is prone to get stuck due to the extension of the gate and valve stem in the high-temperature zone. Summary of the invention

[0003] In order to solve the technical defects in the prior art, the present invention provides a high-temperature wear-resistant plug-in control valve.

[0004] The technical solution adopted by the present invention is: a high-temperature wear-resistant plug-in control valve, including a valve body, the feed port of the valve body is funnel-shaped, a valve stem is provided in the valve body, a bracket is formed in the valve body, the distance between the ring of the bracket and the inner wall of the valve body is greater than 50mm, and the bracket is provided with a plurality of hollow structures for large particle materials to pass through, and also includes: A wedge-shaped seat ring, wherein the wedge-shaped seat ring is slidably mounted on the bracket, and the upper end surface of the bracket is a wedge surface; A gate plate, wherein the gate plate is arranged at the end of the valve stem, the gate plate and the wedge-shaped seat ring are slidably matched, and the gap between the gate plate (4) and the periphery of the valve body (1) at the closed and open positions is greater than 50 mm; An elastic block, wherein the elastic block is arranged at the lower end of the gate plate, one end of the elastic block close to the wedge-shaped seat ring is a movable end, and the other end is a fixed end. The elastic block and the wedge-shaped seat ring are squeezed and matched, and the gate plate pushes the wedge-shaped seat ring and the upper end surface of the bracket to form a wedge surface match through the elastic block; A guide groove, wherein the guide groove is arranged on the lower end surface of the gate plate near the valve stem, and the guide groove section is T-shaped. The fixed end of the elastic block is fixed by a screw, and a guide screw is arranged on the movable end. One end of the guide screw slides with the T-shaped guide groove to realize the horizontal movement of the movable end of the elastic block on the lower end surface of the gate plate; The limit block is arranged on the side of the wedge-shaped seat ring close to the valve stem, and the limit block and the bracket are in limited cooperation.

[0005] The T-shaped guide groove at one end of the wedge-shaped seat ring is slidably connected to the bracket through a pin bolt, and the cooperation between the pin bolt and the T-shaped guide groove prevents the lower end of the wedge-shaped seat ring from tilting up when the valve plate is opened to the maximum position, affecting the next closing or falling off. The lower end surface of the other end of the wedge-shaped seat ring is provided with a guide groove, and the bracket is provided with a guide pin, and the guide pin slides horizontally in the guide groove.

[0006] The elastic block is a corrugated structure, one end of the corrugated structure is provided with a mounting threaded hole for mounting a guide screw, and the other end is fixed by a screw.

[0007] An open T-shaped slot for installing the pin is provided on one end of the wedge-shaped seat ring connected to the pin, and a stopper is also provided on the end face of the open T-shaped slot to prevent materials from entering the T-shaped guide slot to avoid guide jamming.

[0008] The pin is slidably matched with the open T-slot, and the wedge-shaped seat ring includes a closed position in which the wedge surface matches with the upper end surface of the bracket and an open position in which the lower end surface of the wedge-shaped seat ring is separated from the upper end surface of the bracket.

[0009] The limit block is fixedly mounted on the wedge-shaped seat ring by means of screws.

[0010] The end of the gate plate is provided with an arc-shaped notch similar in shape to the middle flow channel of the bracket.

[0011] The top end of the valve stem is provided with a locking nut and a limiting nut.

[0012] The gate plate and the valve stem are fixedly connected by screws and clamping blocks.

[0013] The top of the valve stem is provided with an electric actuator.

[0014] The beneficial effects of the present invention are as follows: the present invention provides a high-temperature wear-resistant plug-in control valve, comprising a valve body, the feed inlet of the valve body is funnel-shaped, a valve stem is arranged in the valve body, a bracket is formed in the valve body, a plurality of hollow structures for large particle materials to pass through are arranged on the bracket, and the bracket also comprises a wedge-shaped seat ring, the wedge-shaped seat ring is slidably mounted on the bracket, and the upper end surface of the bracket is a wedge surface; the gate plate is arranged at the end of the valve stem, and the gate plate and the wedge-shaped seat ring are slidably matched; the elastic block is arranged at the lower end of the gate plate, the elastic block is close to the wedge-shaped seat ring at one end as a movable end, and the other end as a fixed end, the elastic block and the wedge-shaped seat ring are extruded and matched, the gate plate pushes the wedge-shaped seat ring through the elastic block to match the wedge surface between the upper end surface of the bracket, and when the wedge-shaped seat ring moves to the left, the gap between the gate plate and the sealing surface of the valve body becomes smaller and smaller, so that the sealing level becomes higher and higher; the guide groove is arranged on the lower end surface of the gate plate close to the valve stem, and the elastic block The fixed end is fixed by a screw, and a guide screw is provided on the movable end. One end of the guide screw and the T-shaped guide groove slide together to realize the horizontal movement of the movable end of the elastic block on the lower end surface of the gate plate; the limit block is arranged on the side of the wedge-shaped seat ring close to the valve stem, and the limit block and the bracket are limitedly matched. The sealing matching level between the upper end surface of the gate plate and the sealing surface of the valve body is adjusted by adjusting the limit position. Through the combination of the gate plate and the wedge-shaped seat ring, the advantages of the flat gate valve and the wedge-shaped gate valve are utilized, and the structure is combined. The design can effectively improve the sealing level and prevent high-temperature jamming. The valve body is designed with internal leakage to facilitate the smooth passage of large particle materials without being jammed inside the valve body. The design of the elastic block, the guide screw and the guide groove at the bottom of the gate plate enables the valve stem and the gate plate to extend smoothly under high temperature conditions to prevent the valve stem and the gate plate from being stuck. BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 It is a schematic diagram of the structure of the present invention.

[0015] Figure 2 It is a schematic diagram of the valve body structure of the present invention.

[0016] Figure 3 It is a schematic diagram of the gate structure of the present invention.

[0017] Figure 4 It is a schematic diagram of the elastic block structure of the present invention.

[0018] Figure 5 It is a schematic diagram of the valve closing structure of the present invention.

[0019] Figure 6 It is a schematic diagram of the valve opening structure of the present invention.

[0020] Figure 7 This is an enlarged view of the structure at location A of the present invention.

[0021] Figure 8 This is an enlarged view of the structure at B of the present invention.

[0022] Among them, 1-valve body, 2-valve stem, 3-wedge seat ring, 4-gate, 5-elastic block, 6-limit block, 7-electric actuator, 21-locking nut, 22-limiting nut, 23-clamp block, 31-pin, 32-guide pin, 33-stopper, 41-guide groove, 51-guide screw. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0024] A high temperature wear-resistant plug-in control valve comprises a valve body 1, the feed port of the valve body 1 is funnel-shaped, a valve stem 2 is arranged in the valve body 1, a bracket is formed in the valve body 1, a plurality of hollow structures for large particle materials to pass through are arranged on the bracket, so that the large particle materials can pass through smoothly without being stuck inside the valve body, and a wedge-shaped seat ring 3 is also included, the wedge-shaped seat ring 3 is slidably mounted on the bracket, the upper end face of the bracket is a wedge face, one end of the wedge-shaped seat ring 3 is slidably connected to the bracket through a pin 31, a guide groove is arranged on the lower end face of the other end of the wedge-shaped seat ring 3, a guide pin 32 is arranged on the bracket, the guide pin 32 slides horizontally in the guide groove, an open T-shaped slot for installing the pin 31 is arranged on the end of the wedge-shaped seat ring 3 connected with the pin 31, and a stopper 33 is also arranged on the end face of the open T-shaped slot. The pin 31 is movably matched with the open T-slot, and the wedge-shaped seat ring 3 includes a closed position in which the wedge surface is matched with the upper end surface of the bracket and an open position in which the lower end surface of the wedge-shaped seat ring 3 is separated from the upper end surface of the bracket; the gate plate 4 is arranged at the end of the valve stem 2, and the gate plate 4 and the wedge-shaped seat ring 3 are slidably matched, and the upper end surface of the gate plate 4 is sealed with the sealing surface of the valve body 1; the elastic block 5 is arranged at the lower end of the gate plate 4, and the elastic block 5 is close to the valve body 1. One end of the wedge-shaped seat ring 3 is a movable end, and the other end is a fixed end. The elastic block 5 is squeezed and matched with the wedge-shaped seat ring 3. The gate plate 4 pushes the wedge surface between the wedge-shaped seat ring 3 and the upper end surface of the bracket through the elastic block 5. The elastic block 5 is a corrugated structure. One end of the corrugated structure is provided with a mounting threaded hole for installing a guide screw 51, and the other end is fixed by a screw; the guide groove 41 is arranged on the lower end surface of the gate plate 4 close to the valve stem 2, and the cross section of the guide groove 41 is T-shaped , the fixed end of the elastic block 5 is fixed by a screw, and a guide screw 51 is provided on the movable end. One end of the guide screw 51 slides with the guide groove 41 to realize the horizontal movement of the movable end of the elastic block 5 on the lower end surface of the gate plate 4. Under high temperature conditions, the valve stem and the gate plate can smoothly extend to the left through the sliding cooperation of the guide screw 51 on the elastic block and the guide groove 41. During the process of the gate plate and the valve stem extending to the left together, the elastic block 5 is first compressed to absorb the high-temperature elongation of the valve stem and the gate plate on the right side of the elastic block 5 to prevent the valve stem and the gate plate from being stuck; the limit block 6, the limit block 6 is arranged on the side of the wedge seat ring 3 close to the valve stem 2, the limit block 6 and the bracket are limited, and the limit block 6 is fixedly installed on the wedge seat ring 3 by screws. The function of the limit block 6 is mainly to prevent the wedge seat ring 3 from excessively moving to the left, resulting in a gap between the gate plate 3 and the sealing surface of the valve body 1 being too small to cause jamming or the gate plate and the valve stem cannot move to the left due to the sealing pair being too tight at high temperature.

[0025] The end of the gate plate 4 is provided with an arc-shaped notch similar to the shape of the middle flow channel of the bracket, so that it is consistent with the flow channel after opening to the position, preventing the medium from entering the right cavity of the valve body 1.

[0026] The top end of the valve stem 2 is provided with a locking nut 21 and a limiting nut 22. The limiting nut 22 is a pair of nuts, which are locked after being set when the valve is cold to prevent excessive closing.

[0027] The gate plate 4 and the valve stem 2 are fixed by screws and a clamping block 23 and connected in a T-shape.

[0028] An electric actuator 7 is provided on the top of the valve stem 2 .

[0029] Technical personnel should note that although the present invention has been described according to the above specific implementation methods, the inventive concept of the present invention is not limited to this invention, and any modification using the inventive concept will be included in the scope of protection of this patent.

[0030] The above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention. It should be pointed out that for ordinary technicians in this technical field, some improvements and modifications without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A high-temperature wear-resistant plug-in control valve, comprising a valve body (1), wherein the feed inlet of the valve body (1) is funnel-shaped, and a valve stem (2) is arranged in the valve body (1), characterized in that: The valve body (1) is formed with a bracket, and the bracket is provided with a plurality of hollow structures for large particles to pass through, and the distance between the ring of the bracket and the inner wall of the valve body is greater than 50 mm, and also includes: A wedge-shaped seat ring (3), wherein the wedge-shaped seat ring (3) is slidably mounted on the bracket, and the upper end surface of the bracket is a wedge surface; A gate plate (4), the gate plate (4) being arranged at the end of the valve stem (2), the gate plate (4) being slidably fitted with the wedge-shaped seat ring (3), and the clearance between the gate plate (4) and the periphery of the valve body (1) at the closed and open positions being greater than 50 mm; An elastic block (5), wherein the elastic block (5) is arranged at the lower end of the gate plate (4), one end of the elastic block (5) close to the wedge-shaped seat ring (3) is a movable end, and the other end is a fixed end, the elastic block (5) and the wedge-shaped seat ring (3) are squeezed and matched, and the gate plate (4) pushes the wedge-shaped seat ring (3) and the upper end surface of the bracket through the elastic block (5) to form a wedge surface fit; A guide groove (41), wherein the guide groove (41) is arranged on a side of the lower end surface of the gate plate (4) close to the valve stem (2); the fixed end of the elastic block (5) is fixed by a screw, and a guide screw (51) is arranged on the movable end; one end of the guide screw (51) is slidably engaged with the guide groove (41) to realize horizontal movement of the movable end of the elastic block (5) on the lower end surface of the gate plate (4); A limit block (6), wherein the limit block (6) is arranged on a side of the wedge-shaped seat ring (3) close to the valve stem (2), and the limit block (6) is in limit cooperation with the bracket.

2. The high temperature wear-resistant gate control valve according to claim 1, characterized in that: The T-shaped groove at one end of the wedge-shaped seat ring (3) is slidably connected to the bracket via a pin (31); a guide groove is provided on the lower end surface of the other end of the wedge-shaped seat ring (3); a guide pin (32) is provided on the bracket, and the guide pin (32) slides horizontally in the guide groove.

3. The high temperature wear-resistant gate control valve according to claim 1, characterized in that: The elastic block (5) is a corrugated structure, one end of the corrugated structure is provided with a mounting threaded hole for mounting a guide screw (51), and the other end is fixed by a screw.

4. The high temperature wear-resistant gate control valve according to claim 2, characterized in that: An open T-shaped slot for mounting the pin (31) is provided on one end of the wedge-shaped seat ring (3) to which the pin (31) is connected, and a stopper (33) is also provided at the end of the open T-shaped slot.

5. The high temperature wear-resistant gate control valve according to claim 4, characterized in that: The pin (31) is slidably engaged with the open T-slot, and the wedge-shaped seat ring (3) comprises a closed position in which the wedge surface engages with the upper end surface of the bracket, and an open position in which the lower end surface of the wedge-shaped seat ring (3) is disengaged from the upper end surface of the bracket.

6. The high temperature wear-resistant gate control valve according to claim 1, characterized in that: The limit block (6) is fixedly mounted on the wedge-shaped seat ring (3) by means of screws.

7. The high temperature wear-resistant gate control valve according to claim 1, characterized in that: The end of the gate plate (4) is provided with an arc-shaped notch having a shape similar to that of the middle flow channel of the bracket.

8. The high temperature wear-resistant gate control valve according to claim 1, characterized in that: A locking nut (21) and a limiting nut (22) are provided at the top end of the valve stem (2).

9. The high temperature wear-resistant gate control valve according to claim 1, characterized in that: The gate plate (4) and the valve stem (2) are fixedly connected via screws and a clamping block (23).

10. The high temperature wear-resistant gate control valve according to claim 1, characterized in that: An electric actuator (7) is provided on the top of the valve stem (2).

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