Waste gas flow adjusting balance valve

Abstract

The utility model relates to the technical field of balance valves, in particular to a waste gas flow adjusting balance valve which can achieve balance of a flashboard, enables flow of a waste gas conveying channel to be adjusted and kept stable, and is good in practicability. Comprising a valve body, rotating shafts and flashboards, the valve body is in a square cylinder shape, the two gate plates are rotationally installed in the valve body through two rotating shafts, the edges of the two gate plates make sliding contact with the inner wall of the valve body, the piston cylinder is installed on the outer wall of the valve body and is close to the input end of the valve body, the left end of the piston cylinder is communicated with the input end of the valve body, and the right end of the piston cylinder is communicated with the output end of the valve body. The piston plate is installed in the piston cylinder in a sliding mode, the double-face rack is installed on the outer wall of the valve body in a sliding mode and connected with the piston plate, the two gears are concentrically installed on the two rotating shafts respectively and meshed with the double-face rack of the double-face rack respectively, one end of the spring is connected with the double-face rack, and the other end of the spring is connected with the outer wall of the valve body.

Description

Technical Field

[0001] The utility model relates to the technical field of balancing valves, in particular to an exhaust gas flow regulating balancing valve. Background Art

[0002] The flow regulating valve is also known as the self-operated flow control valve, flow balancing valve, and static balancing valve. It is an intuitive and simple flow regulating control device. The flow regulating valve used in the pipeline network can directly set the flow according to the design. The valve can automatically eliminate the flow deviation caused by the residual pressure head and pressure fluctuation of the pipeline under the action of water. For example, the Chinese utility model patent with the publication number CN219432610U proposes a fast-response flow regulating balancing valve. The flow regulating balancing valve achieves the heating effect on the valve body through the coordination between the valve body, temperature sensor, heating wire and controller, and uses the setting of the heating wire, which effectively solves the problem that the valve body cannot be used due to the influence of temperature. The heating method of the valve body using the heating wire ensures the flow state of the liquid from the inside of the valve body and improves the utilization rate of the valve body.

[0003] In order to stabilize the exhaust gas transportation, an exhaust gas flow regulating balancing valve is also set in the exhaust gas transportation channel. However, the flow regulating balancing valve for dedicated exhaust gas transportation channels is rarely involved in the prior art. Therefore, it is practical to propose an exhaust gas flow regulating balancing valve to regulate the flow of the exhaust gas transportation channel. Utility Model Content

[0004] In order to solve the above technical problems, the utility model provides an exhaust gas flow regulating balancing valve which can achieve the balance of the gate plate, so that the flow of the exhaust gas conveying channel can be adjusted and kept stable and has good practicality.

[0005] The utility model discloses an exhaust gas flow regulating balancing valve, comprising a valve body, a rotating shaft and a gate plate; further comprising a piston cylinder, a piston plate, a double-sided rack, a gear and a spring, the valve body is in a square cylindrical shape, the left and right ends of the valve body are connected, two rotating shafts and gate plates are provided, the two gate plates are respectively rotatably installed inside the valve body through two rotating shafts, the two gate plates are arranged oppositely, the two rotating shafts are close to the middle of the valve body, the edges of the two gate plates are in sliding contact with the inner wall of the valve body, the piston cylinder is installed on the outer wall of the valve body, the piston cylinder is close to the input end of the valve body, the left end of the piston cylinder is communicated with the input end of the valve body, the piston plate is slidably installed in the piston cylinder, the double-sided rack is slidably installed on the outer wall of the valve body, the double-sided rack is connected to the piston plate, two gears are respectively concentrically installed on the two rotating shafts, the two gears are respectively meshed with the two-sided racks of the double-sided rack, one end of the spring is connected to the double-sided rack, and the other end of the spring is connected to the outer wall of the valve body; the opening of the two gate plates inside the valve body is adjusted, so as to adjust the size of the exhaust gas channel inside the valve body, the elastic force of the spring supports the double-sided rack, and the double-sided rack is meshed with the two gears so as to The opening of the two gate plates is elastically maintained, and the exhaust gas in the valve body is transported backwards through the exhaust gas channel inside the valve body. At the same time, the exhaust gas at the input end of the valve body enters the piston cylinder. The exhaust gas pressure acts on the piston plate and acts on the two gate plates through the double-sided rack and two gears, which partially offsets the pressure of the exhaust gas directly acting on the two gate plates, and makes the spring partially compressed to realize a balancing valve. When the exhaust gas pressure at the input end of the valve body increases, the exhaust gas in the piston cylinder pushes the piston plate and the double-sided rack backwards to compress the spring, and the double-sided rack meshes and rotates the two gears. The two gears drive the two gate plates to rotate through the two rotating shafts to reduce the channel of the valve body, thereby maintaining a stable flow when the exhaust gas pressure increases; when the exhaust gas pressure at the input end of the valve body decreases, the spring extends and pushes the piston plate toward the piston cylinder through the double-sided rack, and the double-sided rack meshes and rotates the two gears in the opposite direction. The two gears drive the two gate plates to rotate in the opposite direction through the two rotating shafts to increase the channel of the valve body, thereby maintaining a stable flow when the exhaust gas pressure decreases; the flow of the exhaust gas delivery channel is stabilized and regulated, and the practicability is good.

[0006] Preferably, it also includes a sliding sleeve seat, a screw and a nut. The sliding sleeve seat is installed on the outer wall of the valve body. The left end of the screw slides through the sliding sleeve seat and is connected to the double-sided rack. The nut is rotatably screwed on the right end of the screw, and the nut is in contact with the sliding sleeve seat. The nut is rotated to adjust its relative position on the screw, and then the compression amount of the spring is adjusted, thereby adjusting the initial opening of the two gate plates in the valve body to achieve flow regulation.

[0007] Preferably, it also includes multiple sealing strips. Sealing strips are arranged on the outer walls of the two gates, and the multiple sealing strips are arranged between the edges of the two gates and the inner wall of the valve body; by arranging multiple sealing strips, the sealing between the two gates and the inner wall of the valve body is improved.

[0008] Preferably, two baffles are further included, which are respectively installed on the inner wall of the valve body relative to each other, and the two baffles respectively limit and block one end of the two gate plates away from the two rotating shafts; by setting the two baffles, the two gate plates can be prevented from rotating excessively, which has good practicality.

[0009] Preferably, it also includes a guide block, a connecting pipe and a plurality of spray holes, the guide block is installed in the middle of the valve body, the guide block is located between the two rotating shafts, both ends of the guide block are provided with grooves matching the two gate plates, the grooves are used to accommodate the rotating ends of the two gate plates, a chamber is provided inside the guide block, the connecting pipe passes through the outer wall of the valve body and is connected with the chamber of the guide block, a plurality of spray holes are provided on the outer wall of the guide block, the plurality of spray holes are respectively directed toward the two gate plates toward the outer wall of the input end of the valve body; the guide block seals the adjacent parts of the two gate plates to reduce the backward transmission of exhaust gas through between the two gate plates, the connecting pipe is connected to an external cleaning system, the cleaning system is a water washing system or a high-pressure gas system, after working for a period of time, the cleaning water or high-pressure air is input into the chamber of the guide block through the connecting pipe and sprayed toward the outer walls of the two gate plates through the plurality of spray holes, thereby cleaning away the dust attached to the outer walls of the two gate plates and improving reliability.

[0010] Preferably, it also includes an ash hopper and a chute, an ash collecting chamber is arranged inside the ash hopper, an ash inlet connected to the ash collecting chamber is arranged on the upper end surface of the ash hopper, a clamping groove is arranged on the upper end surface of the ash hopper, and an ash outlet is arranged on the lower end surface of the valve body, the ash outlet is located below the two gate plates, the ash outlet is connected with the inside of the valve body, the chute is installed at the ash outlet of the valve body, and the ash hopper is clamped and connected to the chute via the clamping groove; the ash hopper is slidably clamped on the chute via the clamping groove, so that the dust cleaned off the two gate plates enters the ash collecting chamber of the ash hopper through the ash outlet of the valve body and the ash inlet of the ash hopper. After working for a period of time, the ash hopper is disassembled for cleaning, so as to realize dust collection and cleaning, which has good practicality.

[0011] Compared with the prior art, the utility model has the following beneficial effects: the opening of the two gate plates inside the valve body is adjusted, thereby adjusting the size of the exhaust gas channel inside the valve body; the elastic force of the spring supports the double-sided rack, which meshes with the two gears to elastically maintain the opening of the two gate plates; the exhaust gas in the valve body is transported backward through the exhaust gas channel inside the valve body; at the same time, the exhaust gas at the input end of the valve body enters the piston cylinder; the exhaust gas pressure acts on the piston plate, and acts on the two gate plates through the double-sided rack and the two gears, partially offsetting the pressure of the exhaust gas directly acting on the two gate plates, and making the spring partially compressed to realize a balancing valve; when the exhaust gas pressure at the input end of the valve body is When the force becomes larger, the exhaust gas in the piston cylinder pushes the piston plate and the double-sided rack backwards, compressing the spring, and the double-sided rack meshes to rotate the two gears. The two gears drive the two gate plates to rotate through the two rotating shafts to reduce the channel of the valve body, thereby maintaining a stable flow when the exhaust gas pressure increases; when the exhaust gas pressure at the input end of the valve body becomes smaller, the spring stretches and pushes the piston plate toward the piston cylinder through the double-sided rack. The double-sided rack meshes in the opposite direction to rotate the two gears. The two gears drive the two gate plates to rotate in the opposite direction through the two rotating shafts to increase the channel of the valve body, thereby maintaining a stable flow when the exhaust gas pressure decreases; the flow in the exhaust gas delivery channel can be stabilized and regulated, with good practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a structural schematic diagram of the utility model;

[0013] Figure 2 It is a schematic diagram of the side section structure of the utility model;

[0014] Figure 3 It is a schematic diagram of the axonometric structure of the utility model;

[0015] Figure 4 It is a schematic diagram of the structure of the gate, piston cylinder, piston plate, double-sided rack, gear, spring, sliding sleeve seat and screw;

[0016] Figure 5 It is a schematic diagram of the structure of the rotating shaft, gate plate, gear and other structures;

[0017] Figure 6 It is a structural schematic diagram of structures such as a guide block, a joint pipe and a spray hole.

[0018] Markings in the attached figure: 1. valve body; 2. rotating shaft; 3. gate; 4. piston cylinder; 5. piston plate; 6. double-sided rack; 7. gear; 8. spring; 9. sliding sleeve seat; 10. screw; 11. nut; 12. sealing strip; 13. baffle; 14. guide block; 15. connecting pipe; 16. spray hole; 17. ash hopper; 18. chute. DETAILED DESCRIPTION

[0019] In order to facilitate the understanding of the utility model, the utility model will be described more comprehensively below with reference to the relevant drawings. The utility model can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0020] Example 1

[0021] like Figures 1 to 5 As shown, an exhaust gas flow regulating balancing valve comprises a valve body 1, a rotating shaft 2 and a gate plate 3; it also comprises a piston cylinder 4, a piston plate 5, a double-sided rack 6, a gear 7 and a spring 8. The valve body 1 is in the shape of a square cylinder, and the left and right ends of the valve body 1 are connected. Two rotating shafts 2 and gate plates 3 are provided. The two gate plates 3 are rotatably installed in the interior of the valve body 1 through two rotating shafts 2 respectively. The two gate plates 3 are arranged opposite to each other, and the two rotating shafts 2 are close to the middle of the valve body 1. The edges of the two gate plates 3 are in sliding contact with the inner wall of the valve body 1. The piston cylinder 4 is installed on the outer wall of the valve body 1, the piston cylinder 4 is close to the input end of the valve body 1, and the left end of the piston cylinder 4 is connected to the input end of the valve body 1. The piston plate 5 is slidably installed in the piston cylinder 4, the double-sided rack 6 is slidably installed on the outer wall of the valve body 1, the double-sided rack 6 is connected to the piston plate 5, and the two gears 7 are concentrically installed respectively. On the two rotating shafts 2, two gears 7 are respectively meshed with the double-sided racks of the double-sided rack 6, one end of the spring 8 is connected to the double-sided rack 6, and the other end of the spring 8 is connected to the outer wall of the valve body 1; it also includes a sleeve seat 9, a screw 10 and a nut 11, the sleeve seat 9 is installed on the outer wall of the valve body 1, the left end of the screw 10 slides through the sleeve seat 9 and is connected to the double-sided rack 6, the nut 11 is rotatably screwed on the right end of the screw 10, and the nut 11 is in contact with the sleeve seat 9; it also includes a plurality of sealing strips 12, sealing strips 12 are arranged on the outer walls of the two gate plates 3, and a plurality of sealing strips 12 are arranged between the edges of the two gate plates 3 and the inner wall of the valve body 1; it also includes two baffles 13, the two baffles 13 are respectively installed on the inner wall of the valve body 1 relative to each other, and the two baffles 13 respectively limit the two gate plates 3 away from one end of the two rotating shafts 2.

[0022] Turn the nut 11 to adjust its relative position on the screw 10, and then adjust the compression amount of the spring 8, thereby adjusting the initial opening of the two gate plates 3 in the valve body 1, thereby adjusting the size of the exhaust gas channel inside the valve body 1 to achieve flow regulation. The elastic force of the spring 8 supports the double-sided rack 6, and the double-sided rack 6 is engaged with the two gears 7 to elastically maintain the opening of the two gate plates 3. The exhaust gas in the valve body 1 is transported backward through the exhaust gas channel inside the valve body 1. At the same time, the exhaust gas at the input end of the valve body 1 enters the piston cylinder 4. The exhaust gas pressure acts on the piston plate 5 and acts on the two gate plates 3 through the double-sided rack 6 and the two gears 7, partially offsetting the pressure of the exhaust gas directly acting on the two gate plates 3, and making the spring 8 partially compressed to achieve a balancing valve. When the exhaust gas pressure at the input end of the valve body 1 increases, the exhaust gas in the piston cylinder 4 The piston plate 5 and the double-sided rack 6 are pushed backward to compress the spring 8, and the double-sided rack 6 meshes and rotates the two gears 7. The two gears 7 drive the two gate plates 3 to rotate through the two rotating shafts 2 to reduce the channel of the valve body 1, thereby maintaining a stable flow when the exhaust gas pressure increases; when the exhaust gas pressure at the input end of the valve body 1 becomes smaller, the spring 8 extends and pushes the piston plate 5 toward the piston cylinder 4 through the double-sided rack 6, and the double-sided rack 6 meshes and rotates the two gears 7 in the opposite direction. The two gears 7 drive the two gate plates 3 to rotate in the opposite direction through the two rotating shafts 2 to increase the channel of the valve body 1, thereby maintaining a stable flow when the exhaust gas pressure decreases; the flow rate of the exhaust gas delivery channel is stabilized and regulated, and the sealing between the two gate plates 3 and the inner wall of the valve body 1 is improved by setting a plurality of sealing strips 12, and the two baffles 13 are set to prevent the two gate plates 3 from rotating excessively.

[0023] Example 2

[0024] like Figure 1 , Figure 2 and Figure 6 As shown, on the basis of embodiment 1, it also includes a guide block 14, a joint pipe 15 and a plurality of spray holes 16, the guide block 14 is installed in the middle of the valve body 1, the guide block 14 is located between the two rotating shafts 2, both ends of the guide block 14 are provided with grooves matching the two gate plates 3, the grooves are used to receive the rotating ends of the two gate plates 3, a chamber is provided inside the guide block 14, the joint pipe 15 passes through the outer wall of the valve body 1 and is connected to the chamber of the guide block 14, a plurality of spray holes 16 are provided on the outer wall of the guide block 14, and the plurality of spray holes 16 are provided on the outer wall of the guide block 14. The holes 16 are respectively directed toward the two gate plates 3 toward the outer wall of the input end of the valve body 1; it also includes an ash hopper 17 and a chute 18, an ash collecting chamber is arranged inside the ash hopper 17, an ash inlet connected to the ash collecting chamber is arranged on the upper end face of the ash hopper 17, a clamping groove is arranged on the upper end face of the ash hopper 17, and an ash outlet is arranged on the lower end face of the valve body 1, the ash outlet is located below the two gate plates 3, the ash outlet is connected to the inside of the valve body 1, the chute 18 is installed at the ash outlet of the valve body 1, and the ash hopper 17 is clamped and connected to the chute 18 via the clamping groove.

[0025] The guide block 14 seals the adjacent parts of the two gate plates 3 to reduce the exhaust gas from being transported backward between the two gate plates 3. The connecting pipe 15 is connected to an external cleaning system, which is a water washing system or a high-pressure gas system. After working for a period of time, the cleaning water or high-pressure air is input into the chamber of the guide block 14 through the connecting pipe 15 and sprayed toward the outer walls of the two gate plates 3 through multiple spray holes 16, thereby cleaning the dust attached to the outer walls of the two gate plates 3. The ash hopper 17 is mounted on the slide groove 18 through a sliding card slot, so that the dust cleaned from the two gate plates 3 enters the ash collecting chamber of the ash hopper 17 through the ash outlet of the valve body 1 and the ash inlet of the ash hopper 17. After working for a period of time, the ash hopper 17 is disassembled for cleaning to realize dust collection and cleaning.

[0026] like Figures 1 to 6 As shown, the utility model is an exhaust gas flow regulating balancing valve. When it is working, first the valve body 1 is connected to the exhaust gas conveying pipeline, and the nut 11 is rotated to adjust its relative position on the screw 10, thereby adjusting the compression amount of the spring 8, thereby adjusting the initial opening of the two gate plates 3 in the valve body 1 to achieve flow regulation. After that, the elastic force of the spring 8 supports the double-sided rack 6, and the double-sided rack 6 is meshed with the two gears 7 so that the opening of the two gate plates 3 is elastically maintained, and the exhaust gas in the valve body 1 is transported backward through the exhaust gas channel inside the valve body 1. At the same time, the exhaust gas at the input end of the valve body 1 enters the piston cylinder 4, and the exhaust gas pressure acts on the piston plate 5, and acts on the two gate plates 3 through the double-sided rack 6 and the two gears 7, which partially offsets the pressure of the exhaust gas directly acting on the two gate plates 3 to achieve a balancing valve. Then, when the exhaust gas pressure at the input end of the valve body 1 becomes larger, the exhaust gas in the piston cylinder 4 pushes the piston plate 5 and the double-sided rack 6 backward, compressing the spring 8 , the double-sided rack 6 meshes and rotates the two gears 7, and the two gears 7 drive the two gate plates 3 to rotate through the two rotating shafts 2 to reduce the channel of the valve body 1, thereby maintaining a stable flow rate when the exhaust gas pressure increases; when the exhaust gas pressure at the input end of the valve body 1 becomes smaller, the spring 8 extends and pushes the piston plate 5 toward the piston cylinder 4 through the double-sided rack 6, and the double-sided rack 6 meshes and rotates the two gears 7 in the opposite direction, and the two gears 7 drive the two gate plates 3 to rotate in the opposite direction through the two rotating shafts 2 to increase the channel of the valve body 1, thereby maintaining a stable flow rate when the exhaust gas pressure decreases; finally, after working for a period of time, cleaning water or high-pressure air is input into the chamber of the guide block 14 through the joint pipe 15 and sprayed onto the outer walls of the two gate plates 3 through multiple spray holes 16, thereby cleaning the dust attached to the outer walls of the two gate plates 3, and the dust enters the ash collecting chamber of the ash collecting hopper 17 through the ash outlet of the valve body 1 and the ash inlet of the ash collecting hopper 17, and the ash collecting hopper 17 can be disassembled for cleaning.

[0027] The main functions achieved by this utility model are:

[0028] 1. It can achieve the balance of the gate plate, so that the flow of the exhaust gas conveying channel can be adjusted and kept stable;

[0029] 2. The initial opening of the two gate plates 3 in the valve body 1 can be adjusted to achieve flow regulation;

[0030] 3. The valve stem, handle and other structures are eliminated, the structure is simple and the operation is convenient;

[0031] 4. Can efficiently clean the dust on the gate.

[0032] The utility model is a kind of exhaust gas flow regulating balancing valve, and its installation method, connection method or setting method are all common mechanical methods, and can be implemented as long as it can achieve its beneficial effects; the valve body 1, rotating shaft 2, gate plate 3, piston plate 5, double-sided rack 6, gear 7, spring 8, screw 10, nut 11, sealing strip 12, joint pipe 15, spray hole 16, and slide groove 18 of the exhaust gas flow regulating balancing valve of the utility model are purchased on the market, and technical personnel in the industry only need to install and operate it according to the accompanying instruction manual, without the need for technical personnel in this field to pay creative labor.

[0033] All technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0034] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. An exhaust gas flow regulating balancing valve, comprising a valve body (1), a rotating shaft (2) and a gate plate (3); characterized in that: The valve body (1) also includes a piston cylinder (4), a piston plate (5), a double-sided rack (6), a gear (7) and a spring (8). The valve body (1) is in the shape of a square cylinder. The left and right ends of the valve body (1) are connected. Two rotating shafts (2) and two gate plates (3) are provided. The two gate plates (3) are rotatably installed inside the valve body (1) through the two rotating shafts (2). The two gate plates (3) are arranged opposite to each other. The two rotating shafts (2) are close to the middle of the valve body (1). The edges of the two gate plates (3) are in sliding contact with the inner wall of the valve body (1). The piston cylinder (4) is installed on the outer wall of the valve body (1). The cylinder (4) is close to the input end of the valve body (1), the left end of the piston cylinder (4) is connected to the input end of the valve body (1), the piston plate (5) is slidably installed in the piston cylinder (4), the double-sided rack (6) is slidably installed on the outer wall of the valve body (1), the double-sided rack (6) is connected to the piston plate (5), two gears (7) are concentrically installed on the two rotating shafts (2), the two gears (7) are respectively meshed with the two-sided racks of the double-sided rack (6), one end of the spring (8) is connected to the double-sided rack (6), and the other end of the spring (8) is connected to the outer wall of the valve body (1).

2. The exhaust gas flow regulating balancing valve according to claim 1, characterized in that: It also includes a sleeve seat (9), a screw rod (10) and a nut (11). The sleeve seat (9) is mounted on the outer wall of the valve body (1). The left end of the screw rod (10) slides through the sleeve seat (9) and is connected to the double-sided rack (6). The nut (11) is rotatably screwed on the right end of the screw rod (10), and the nut (11) is in contact with the sleeve seat (9).

3. The exhaust gas flow regulating balancing valve according to claim 1, characterized in that: It also comprises a plurality of sealing strips (12), the sealing strips (12) being arranged on the outer walls of the two gate plates (3), and the plurality of sealing strips (12) being arranged between the edges of the two gate plates (3) and the inner wall of the valve body (1).

4. The exhaust gas flow regulating balancing valve according to claim 1, characterized in that: It also comprises two baffles (13), which are respectively mounted on the inner wall of the valve body (1) in a relative manner, and the two baffles (13) respectively limit and block one end of the two gate plates (3) away from the two rotating shafts (2).

5. The exhaust gas flow regulating balancing valve according to claim 1, characterized in that: The valve body (1) further comprises a guide block (14), a joint pipe (15) and a plurality of spray holes (16). The guide block (14) is installed in the middle of the valve body (1). The guide block (14) is located between the two rotating shafts (2). Grooves matching the two gate plates (3) are arranged at both ends of the guide block (14). The grooves are used to receive the rotating ends of the two gate plates (3). A chamber is arranged inside the guide block (14). The joint pipe (15) passes through the outer wall of the valve body (1) and is connected to the chamber of the guide block (14). A plurality of spray holes (16) are arranged on the outer wall of the guide block (14). The plurality of spray holes (16) are respectively oriented toward the two gate plates (3) and toward the outer wall of the input end of the valve body (1).

6. The exhaust gas flow regulating balancing valve according to claim 5, characterized in that: It also includes an ash collecting hopper (17) and a chute (18), wherein an ash collecting chamber is arranged inside the ash collecting hopper (17), an ash inlet communicating with the ash collecting chamber is arranged on the upper end surface of the ash collecting hopper (17), a clamping groove is arranged on the upper end surface of the ash collecting hopper (17), and an ash outlet is arranged on the lower end surface of the valve body (1), wherein the ash outlet is located below the two gate plates (3), the ash outlet is communicated with the inside of the valve body (1), the chute (18) is installed at the ash outlet of the valve body (1), and the ash collecting hopper (17) is clamped and connected with the chute (18) via the clamping groove.

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