Static pressure valve, self-adjusting flow-equalizing type air distribution assembly and incinerator
Through the static pressure valve and self-adjustable and equalized air distribution assembly, the problem of uneven secondary air distribution of waste incinerator is solved, and the secondary air is automatically adjusted and balanced air flow is realized, which improves combustion efficiency and reduces the generation of pollutants.
Patent Information
- Application Number
- CN202421987523.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-16
- Publication Date
- 2025-07-01
- Estimated Expiration
- 2034-08-16
AI Technical Summary
The uneven secondary air distribution of existing waste incinerators leads to incomplete combustion, increasing the amount of secondary pollutants.
The static pressure valve and self-adjustable and equalized air distribution assembly are adopted. Through the cooperation of the static pressure slide plate and elastic parts, the gap between the secondary air nozzles is automatically adjusted to balance the air pressure and static pressure changes, ensuring that the air outlet flow of each nozzle is balanced.
Automatic adjustment of secondary air distribution is achieved, ensuring that the gas-solid substances in the incinerator are completely burned and the generation of secondary pollutants is reduced.
Smart Images
Figure CN223049506U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of secondary air distribution regulation of incinerators, and relates to a static pressure valve, a self-adjusting and uniform air distribution assembly and an incinerator. Background Art
[0002] In the design of waste incinerators, the air required for waste combustion treatment consists of primary air and secondary air. Among them, the primary air, which accounts for a larger proportion, enters the combustion core area of the waste incinerator through the air chamber at the bottom of the grate. The primary air provides the air volume required for waste drying, combustion and burnout. The secondary air, which accounts for a smaller proportion, is sprayed into the incinerator through multiple secondary air inlets arranged in the middle and lower parts of the furnace chamber, as the supplementary air volume required for the complete combustion of combustible gases and solid particulate matters, etc. In the high-temperature environment in the furnace, the combustible gases and combustible dust particulate matters generated during the combustion process of solid combustible substances in the waste are fully and completely combusted. The air volume and air distribution uniformity of the secondary air have an important impact on inhibiting the generation of gaseous pollutants during the combustion process.
[0003] At present, the secondary air distribution of waste incinerators is sprayed into the furnace through multiple secondary air inlets, that is, a secondary air distribution pipe is arranged at the front and rear walls at the bottom of the flue gas passage at the upper ends of the front and rear furnace arches of the incinerator to distribute air to multiple secondary air inlets on each side; in actual application, the secondary air only enters through one end of the secondary air distribution pipe, and the other end is sealed by a blind plate. The diameter of the secondary air distribution pipe remains the same along the length direction. Therefore, the static pressure of the air pressure in the secondary air distribution pipe gradually decreases from the air inlet end to the other end. Since the sizes of multiple secondary air inlets are the same, due to the influence of the gradually decreasing static pressure of the air pressure in the secondary air distribution pipe, the secondary air inlet near the air inlet end of the secondary air distribution pipe has a large static pressure, and the air volume of the secondary air sprayed into the furnace is large. While the secondary air inlet near the end (blind plate) of the secondary air distribution pipe has a small air pressure static pressure, and the air volume of the secondary air sprayed into the furnace is small, resulting in uneven secondary air distribution in the furnace chamber of the incinerator, which will affect the complete combustion of gas and solid substances in the entire furnace flue, and at the same time will also cause an increase in the generation amount of secondary pollutants (CO concentration and NOx and other harmful gases). Content of the Utility Model
[0004] In order to solve the above technical problems, one of the purposes of the utility model is to provide a static pressure valve with a simple structure, whose air output can be automatically adjusted and does not fluctuate with the fluctuation of air pressure static pressure.
[0005] To achieve the above object, the technical solution of the present utility model is as follows: A static pressure valve, comprising an air distribution box, a cylinder liner, a static pressure slide plate, a slide shaft, a throttle plate and an elastic member. The cylinder liner is fixedly installed at one end of the air distribution box. A secondary air nozzle is provided at the end of the air distribution box away from the cylinder liner. A secondary air inlet is also provided on the side wall of the air distribution box. The static pressure slide plate is slidably and sealingly arranged in the cylinder liner. The cylinder liner, the static pressure slide plate and the air distribution box jointly enclose a chamber. The slide shaft is arranged along the axial direction of the static pressure slide plate and is fixedly connected to the static pressure slide plate. One end of the slide shaft close to the air distribution box is sealingly and slidably inserted into the air distribution box. The throttle plate is arranged in the air distribution box and is vertically connected to the corresponding end of the slide shaft. The throttle plate is aligned with the secondary air nozzle. The elastic member is arranged in the chamber, and both ends of the elastic member respectively abut against the air distribution box and the static pressure slide plate. The elastic force of the elastic member is used to drive the static pressure slide plate to tend to slide away from the air distribution box. A pressure balance interface communicating with the inside of the chamber is provided on the air distribution box or the cylinder liner.
[0006] The beneficial effect of the above technical solution is as follows: Thus, without considering the pressure in the chamber, at this time, if the static pressure of the wind pressure outside the cylinder liner is greater, the static pressure slide plate will slide towards the air distribution box. At this time, the gap between the throttle plate and the secondary air nozzle will decrease (which can be understood as the air passing area of the secondary air nozzle decreases). In this way, even if the wind pressure static pressure increases, the air outlet flow rate at the secondary air nozzle will not increase. On the contrary, if the static pressure of the wind pressure outside the cylinder liner is smaller, the sliding amount of the static pressure slide plate towards the air distribution box is small. At this time, the gap between the throttle plate and the secondary air nozzle becomes larger (which can be understood as the air passing area of the secondary air nozzle increases). In this way, even if the wind pressure static pressure decreases, the air outlet flow rate at the secondary air nozzle will not decrease. That is, the static pressure valve can automatically balance the change of the wind pressure static pressure so that the air outlet flow rate at the secondary air nozzle does not fluctuate with the fluctuation of the wind pressure static pressure.
[0007] The above technical solution further includes a hollow limiting plate. The limiting plate is arranged at the end of the cylinder liner away from the air distribution box. One end of the slide shaft away from the air distribution box passes through the limiting plate and extends out of the cylinder liner. The limiting plate is used to limit the stroke of the static pressure slide plate sliding away from the air distribution box.
[0008] The beneficial effect of the above technical solution is as follows: By arranging a limiting plate at the end of the cylinder liner away from the air distribution box, the static pressure slide plate can be prevented from sliding out of the cylinder liner through the end of the cylinder liner away from the air distribution box. At this time, the farthest stroke of the static pressure slide plate moving away from the air distribution box under the action of the elastic force of the elastic member is when the static pressure slide plate abuts against the limiting plate.
[0009] A slide hole for the slide shaft to pass through is provided in the middle of the limiting plate in the above technical solution. A plurality of air holes are circumferentially and spacedly arranged at the edge of the limiting plate.
[0010] The beneficial effects of the above technical solution are as follows: Its structure is simple, and the limiting plate can not only limit the moving stroke of the static pressure slide plate, but also does not affect the wind pressure static pressure to apply pressure to the side of the static pressure slide plate away from the air distribution box.
[0011] In the above technical solution, the elastic member is a spring.
[0012] The beneficial effects of the above technical solution are as follows: Its structure is simple and it is convenient to install.
[0013] In the above technical solution, the pressure balance interface is located in the air distribution box.
[0014] The beneficial effects of the above technical solution are as follows: In this way, the pressure in the chamber can be introduced into the low-pressure area through the pressure balance interface through the pressure balance pipe to maintain air pressure balance.
[0015] The second object of the present utility model is to provide a self-adjusting and uniform-flow air distribution assembly with a simple structure and capable of ensuring relatively balanced air outlet flow rates of multiple secondary air distribution openings.
[0016] In order to achieve the above object, the technical solution of the present utility model is as follows: A self-adjusting and uniform-flow air distribution assembly includes an air distribution main pipe and a plurality of static pressure valves as described above. One end of the air distribution main pipe is open and forms an air inlet, the other end of the air distribution main pipe is blocked, and a plurality of secondary air distribution openings are arranged at intervals along the length direction of the air distribution main pipe. The plurality of static pressure valves are arranged in the air distribution main pipe and correspond to the plurality of secondary air distribution openings one by one. Each secondary air nozzle is hermetically docked with the corresponding secondary air distribution opening.
[0017] The beneficial effects of the above technical solution are as follows: In this way, the wind pressure and static pressure at the position where each static pressure valve is located in the air distribution main pipe are different, and the gap wind pressure and static pressure between each throttle plate and the corresponding secondary air nozzle are negatively correlated, so that the air flow rates at the plurality of secondary air nozzles are quite the same (specifically, the gap between the throttle plate at the position with large wind pressure and static pressure and the corresponding secondary air nozzle is small, and the gap between the throttle plate at the position with small wind pressure and static pressure and the corresponding secondary air nozzle is large, so as to ensure as much as possible that the air flow rates at each secondary air nozzle are the same).
[0018] The above technical solution further includes a plurality of adjusting members. The plurality of adjusting members are all installed on the air distribution main pipe and correspond to the plurality of static pressure valves one by one. The adjusting member has a handle end located outside the air distribution main pipe and an adjusting end located inside the air distribution main pipe. The adjusting end of each adjusting member is aligned with the end of the corresponding sliding shaft away from the air distribution box. The adjusting member is used to squeeze the sliding shaft to adjust the compression amount of the elastic member.
[0019] The beneficial effect of the above technical solution is that in this way, the compression amount of each elastic member in the initial state can be adjusted by the adjusting member to be balanced with the wind pressure and static pressure at the inner end of the air distribution main pipe (the place where the wind pressure and static pressure are the smallest during operation), so that when the entire air distribution main pipe is not ventilated initially, the static pressure slides of each static pressure valve can be limited by the adjusting member to slide to a position away from the air distribution box.
[0020] In the above technical solution, the adjusting member is a fine-tuning bolt, and a threaded hole is provided on the air distribution main pipe at the position where the adjusting member is arranged. The adjusting member is threadedly connected to the threaded hole. The threaded end of the adjusting member constitutes the adjusting end, and the head of the adjusting member constitutes the handle end. Tighten or loosen the adjusting member to adjust the compression amount of the elastic member.
[0021] The beneficial effect of the above technical solution is that in this way, it is more convenient to adjust the compression amount of the elastic member.
[0022] In the above technical solution, the static pressure valve further includes an abutting plate. The abutting plate is arranged outside the cylinder sleeve and at one end of the cylinder sleeve away from the air distribution box. The corresponding end of the sliding shaft penetrates through the abutting plate and is vertically connected to the abutting plate. A limiting groove is concavely provided at the adjusting end of the adjusting member, and the adjusting member and the sliding shaft are coaxially distributed. The corresponding end of the sliding shaft is inserted into the limiting groove, and the adjusting end of the adjusting member abuts against the abutting plate.
[0023] The beneficial effect of the above technical solution is that its structure is simple, and it is more convenient to adjust the compression amount of the elastic member. In particular, the sliding shaft will not tilt and be misaligned with the adjusting member.
[0024] In the above technical solution, the air distribution main pipe forms a thickened convex block at the threaded hole.
[0025] The beneficial effect of the above technical solution is that in this way, the structural strength of the threaded connection between the adjusting member and the air distribution main pipe is higher, and the sealing performance at the connection between the two is better.
[0026] The third object of the present invention is to provide an incinerator with a simple structure and relatively consistent air inlet flow rates at each secondary air inlet.
[0027] To achieve the above object, the technical solution of the present utility model is as follows: An incinerator includes an incinerator body, a plurality of pressure balance pipes, and the self-adjusting and evenly-flowing air distribution assembly as described above. The incinerator body has a plurality of secondary air inlets, and the plurality of secondary air distribution openings correspond to the plurality of secondary air inlets one by one. Each secondary air distribution opening is hermetically docked with the corresponding secondary air inlet. The plurality of pressure balance pipes correspond to the plurality of static pressure valves one by one. One end of each pressure balance pipe is connected and communicated with the corresponding pressure balance interface, and the other end of each pressure balance pipe is led to the back pressure area inside the furnace chamber of the incinerator body.
[0028] The beneficial effect of the above technical solution is that its structure is simple. By connecting the chambers of the plurality of static pressure valves to the back pressure area inside the furnace chamber of the incinerator through the pressure balance pipes, the static pressure on the side of the static pressure slide plate close to the chamber can be eliminated, so that the static pressure slide plate is only affected by the spring force and the static pressure of the air pressure on the other side during operation. Description of the Drawings
[0029] Figure 1 Is the elevation view of the static pressure valve described in Embodiment 1 of the present utility model;
[0030] Figure 2 Is the cross-sectional view of the static pressure valve described in Embodiment 1 of the present utility model;
[0031] Figure 3 Is the structural schematic diagram of the self-adjusting and evenly-flowing air distribution assembly described in Embodiment 2 of the present utility model;
[0032] Figure 4 Is the elevation view when a contact plate is arranged on the sliding shaft described in Embodiment 2 of the present utility model;
[0033] Figure 5 Is the cross-sectional view of the incinerator described in Embodiment 3 of the present utility model;
[0034] Figure 6 Is the distribution schematic diagram of a plurality of static pressure valves on the incinerator described in Embodiment 3 of the present utility model.
[0035] In the figure: 1 self-adjusting and evenly-flowing air distribution assembly; 11 static pressure valve; 111 air distribution box; 1111 secondary air nozzle; 1112 secondary air inlet; 112 cylinder liner; 113 static pressure slide plate; 114 sliding shaft; 115 throttle plate; 116 elastic member; 117 pressure balance interface; 118 limit plate; 1181 sliding hole; 1182 vent hole; 119 contact plate; 12 air distribution main pipe; 121 air inlet; 122 secondary air distribution opening; 123 threaded hole; 124 convex block; 13 adjusting member; 131 limit groove; 2 incinerator body; 21 secondary air inlet; 3 pressure balance pipe. Detailed Embodiments
[0036] The principles and features of the present utility model will be described below in conjunction with the accompanying drawings. The examples given are only used to explain the present utility model and are not intended to limit the scope of the present utility model. In the following paragraphs, the present utility model will be described more specifically by way of example with reference to the accompanying drawings. The advantages and features of the present utility model will be clearer according to the following description and the claims. It should be noted that the accompanying drawings are all in a very simplified form and use non-precise scales, and are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the present utility model.
[0037] Embodiment 1
[0038] As Figure 1 and Figure 2 shown, this embodiment provides a static pressure valve, which includes an air distribution box 111, a cylinder liner 112, a static pressure slide plate 113, a slide shaft 114, a throttle plate 115 and an elastic member 116. The cylinder liner 112 is fixedly installed at one end of the air distribution box 111. A secondary air nozzle 1111 is provided at the end of the air distribution box 111 away from the cylinder liner 112. A secondary air inlet 1112 is further provided on the side wall of the air distribution box 111. The static pressure slide plate 113 is slidably and sealingly arranged in the cylinder liner 112. The cylinder liner 112, the static pressure slide plate 113 and the air distribution box 111 jointly enclose a chamber. The slide shaft 114 is arranged along the axial direction of the static pressure slide plate 113 and is fixedly connected to the static pressure slide plate 113. One end of the slide shaft 114 close to the air distribution box 111 is sealingly and slidably inserted into the air distribution box 111. The throttle plate 115 is arranged in the air distribution box 111 and is vertically connected to the corresponding end of the slide shaft 114. The throttle plate 115 is coaxially aligned with the secondary air nozzle 1111. The elastic member 116 is arranged in the chamber, and both ends of the elastic member 116 are respectively abutted against the air distribution box 111 and the static pressure slide plate 113. The elastic force of the elastic member 116 is used to drive the static pressure slide plate 113 to tend to slide away from the air distribution box 111 to maintain the initial position of the static pressure slide plate. A pressure balance interface 117 communicating with the inside of the chamber is provided on the air distribution box 111 or the cylinder liner 112. Thus, without considering the pressure in the chamber, at this time, if the static pressure of the wind pressure outside the cylinder liner is greater, the static pressure slide plate will slide towards the air distribution box. At this time, the gap between the throttle plate and the secondary air nozzle becomes smaller (it can be understood that the air passing area of the secondary air nozzle decreases). In this way, even if the wind pressure static pressure increases, the air outlet flow rate at the secondary air nozzle will not increase. On the contrary, if the static pressure of the wind pressure outside the cylinder liner is smaller, the static pressure slide plate will slide away from the air distribution box under the action of the spring force. At this time, the gap between the throttle plate and the secondary air nozzle becomes larger (it can be understood that the air passing area of the secondary air nozzle increases). In this way, even if the wind pressure static pressure decreases, the air outlet flow rate at the secondary air nozzle will not decrease. That is, the static pressure valve can balance the change of the wind pressure static pressure so that the air outlet flow rate at the secondary air nozzle does not fluctuate with the fluctuation of the wind pressure static pressure.
[0039] In this embodiment, the air distribution box may be a cubic box, the middle of the corresponding end of the cylinder liner is hermetically connected to the air distribution box, the cylinder liner may be a cylindrical part, one end of which is hermetically connected to the corresponding end of the air distribution box, the secondary air nozzles 1111 are distributed opposite to the cylinder liner. When the static pressure slide plate slides to completely compress the elastic member, at this time, the throttle plate can move to just be located inside the secondary air nozzles. The area of the throttle plate is slightly smaller than the opening area of the secondary air nozzles, that is, when the elastic member is completely compressed by the static pressure slide plate, the throttle plate will not completely block the secondary air nozzles.
[0040] The above technical solution further includes a hollow limiting plate 118. The limiting plate 118 is arranged at one end of the cylinder liner 112 far from the air distribution box 111, and one end of the sliding shaft 114 far from the air distribution box 111 passes through the limiting plate 118 and extends out of the cylinder liner 112. The limiting plate 118 is used to limit the sliding stroke of the static pressure slide plate 113 away from the air distribution box 111. By arranging a limiting plate at one end of the cylinder liner far from the air distribution box, this can prevent the static pressure slide plate from sliding out of the cylinder liner through the end of the cylinder liner far from the air distribution box. At this time, the farthest stroke of the static pressure slide plate moving away from the air distribution box under the elastic force of the elastic member is when the static pressure slide plate abuts against the limiting plate (of course, the end of the cylinder liner far from the air distribution box can be turned inward to form a limiting ring for limiting the sliding stroke of the static pressure slide plate. At this time, the limiting ring can replace the limiting plate).
[0041] A sliding hole 1181 for the sliding shaft 114 to pass through is arranged in the middle of the limiting plate 118 in the above technical solution. A plurality of air holes 1182 are circumferentially arranged at intervals at the edge of the limiting plate 118. Its structure is simple, and the limiting plate can not only limit the reverse movement stroke of the static pressure slide plate, but also will not affect the air pressure static pressure applying pressure to the side of the static pressure slide plate away from the air distribution box.
[0042] In the above technical solution, the elastic member 116 is a spring, which has a simple structure and is convenient to install.
[0043] In the above technical solution, the pressure balance interface 117 is located inside the air distribution box 111, so that the pressure in the chamber can be kept in air pressure balance with the outside through the pressure balance interface, eliminating the static pressure on one side of the chamber of the static pressure slide plate, so that the static pressure slide plate is only affected by the spring force and the air pressure static pressure on the other side during operation.
[0044] In this embodiment, the sliding shaft and the static pressure slide plate are coaxially distributed, and the sliding shaft penetrates through both ends of the static pressure slide plate.
[0045] In this embodiment, the pressure balance interface 117 needs to be led to the low-pressure area through a pressure balance pipe (the pressure of the low-pressure area needs to be lower than the wind pressure static pressure at the position where the static pressure valve is located and should be close to the atmospheric pressure).
[0046] Embodiment 2
[0047] As Figure 3 and Figure 4 shown, this embodiment provides a self-adjusting and uniform air distribution assembly, including an air distribution main pipe 12 and a plurality of static pressure valves 11 as described in Embodiment 1. One end of the air distribution main pipe 12 is open and forms an air inlet 121, and the other end of the air distribution main pipe 12 is blocked. A plurality of secondary air distribution openings 122 are provided at equal intervals along the length direction of the air distribution main pipe 12. A plurality of the static pressure valves 11 are arranged in the air distribution main pipe 12 and correspond to the plurality of secondary air distribution openings 122 one by one. Each secondary air nozzle 1111 is hermetically docked with the corresponding secondary air distribution opening 122, so that the wind pressure static pressure at the position where each static pressure valve is located in the air distribution main pipe is different, and the gap wind pressure static pressure between each throttle plate and the corresponding secondary air nozzle is negatively correlated, so that the air flow rates at a plurality of secondary air nozzles are quite the same (specifically, the gap between the throttle plate at the position with a large wind pressure static pressure and the corresponding secondary air nozzle is small, and the gap between the throttle plate at the position with a small wind pressure static pressure and the corresponding secondary air nozzle is large, so as to ensure as much as possible that the secondary air volumes sprayed from each secondary air nozzle are quite the same).
[0048] The above technical solution further includes a plurality of adjusting members 13. The plurality of adjusting members 13 are all installed on the air distribution main pipe 12 and correspond to the plurality of static pressure valves 11 one by one. The adjusting member 13 has a handle end located outside the air distribution main pipe 12 and an adjusting end located inside the air distribution main pipe 12. The adjusting end of each adjusting member 13 is aligned with the end of the corresponding sliding shaft 114 away from the air distribution box 111. The adjusting member 13 is used to squeeze the sliding shaft 114 to adjust the compression amount of the elastic member 116, so that the compression amount of each elastic member in the initial state can be adjusted to be balanced with the wind pressure static pressure at the inner end of the air distribution main pipe (the position with the smallest wind pressure static pressure during operation), so that when the entire air distribution main pipe is not ventilated initially, the positions where the static pressure slide plates of each static pressure valve slide away from the air distribution box can be limited by the adjusting member.
[0049] In the above technical solution, the adjusting member 13 is a fine-tuning bolt, and a threaded hole 123 is provided on the air distribution main pipe 12 at the position where the adjusting member 13 is provided. The adjusting member 13 is threadedly connected to the threaded hole 123. The threaded end of the adjusting member 13 constitutes the adjusting end, and the head of the adjusting member 13 constitutes the handle end. Tightening or loosening the adjusting member 13 to adjust the compression amount of the elastic member 116 makes it more convenient to adjust the compression amount of the elastic member.
[0050] In the above technical solution, the static pressure valve 11 further includes a contact plate 119. The contact plate 119 is arranged outside the cylinder liner 112 and is located at one end of the cylinder liner 112 away from the air distribution box 111. The corresponding end of the sliding shaft 114 penetrates through the contact plate 119 and is vertically connected to the contact plate 119. A limiting groove 131 is concavely provided at the adjusting end of the adjusting member 13, and the adjusting member 13 and the sliding shaft 114 are coaxially distributed. The corresponding end of the sliding shaft 114 is inserted into the limiting groove 131, and the adjusting end of the adjusting member 13 abuts against the contact plate 119. Its structure is simple, and it makes the adjustment of the compression amount of the elastic member more convenient. In particular, the sliding shaft will not tilt and be misaligned with the adjusting member.
[0051] In the above technical solution, the air distribution main pipe 12 forms a thickened convex block 124 at the threaded hole 123. In this way, the structural strength of the threaded connection between the adjusting member and the air distribution main pipe is higher, and the sealing performance at the connection between the two is better.
[0052] On the premise of not considering the frictional resistance between the static pressure sliding plate and the cylinder liner, in this embodiment, the adjusting member does not need to be frequently adjusted. It only needs to be adjusted when the incinerator is initially running. The screwing-in amount of the adjusting member makes the pressure generated by the elastic member on the static pressure sliding plate when compressed be F1, while the acting force exerted on the static pressure sliding plate by the wind pressure and static pressure at the end of the air distribution main pipe (that is, the end far from the air inlet) is F2. Among them, F1 and F2 are of the same magnitude but act in opposite directions, that is, they exactly cancel each other out.
[0053] At this time, for the entire self-adjusting and uniform air distribution assembly, when multiple static pressure valves are operating, there is a certain distance between their sliding shafts and the adjusting ends of the corresponding adjusting members. Moreover, the closer the static pressure valve is to the air inlet end of the air distribution main pipe, the larger the corresponding distance is, and the distance between the sliding shaft of the static pressure valve at the end of the air distribution main pipe and the adjusting end of the corresponding adjusting member is the smallest (it can even be in a state of remaining in contact).
[0054] When the entire self-adjusting and uniform air distribution assembly is operating normally, the air inflow at the air inlet of the air distribution main pipe is relatively constant. Therefore, the wind pressure and static pressure corresponding to each static pressure valve are also relatively stable. Therefore, for each static pressure valve, when it is operating normally, the position of its static pressure sliding plate in the cylinder liner is also basically stable, so that the air flow rates of the secondary air sent out by multiple static pressure valves are kept uniform.
[0055] Embodiment 3
[0056] As Figure 5 and Figure 6As shown in the figure, this embodiment provides an incinerator, which includes an incinerator body 2, multiple pressure balance pipes 3, and a self-adjusting and uniform air distribution assembly 1 as described in Embodiment 2. The incinerator body 2 has multiple secondary air inlets 21. Multiple secondary air distribution openings 122 and multiple secondary air inlets 21 correspond one by one. Each secondary air distribution opening 122 is hermetically docked with the corresponding secondary air inlet 21. Multiple pressure balance pipes 3 correspond one by one to multiple static pressure valves 11. One end of each pressure balance pipe 3 is connected and communicated with the corresponding pressure balance interface 117. The other end of each pressure balance pipe 3 is led to the back pressure area inside the furnace of the incinerator body 2 (in this way, the pressure in the chamber is basically the same as the pressure in the back pressure area inside the furnace of the incinerator, and the pressure difference between the wind pressure static pressure at the static pressure valve and the back pressure area inside the furnace of the incinerator drives the static pressure slide plate to move in the cylinder sleeve against the elastic force of the elastic member, that is, ultimately the air flow rate at each secondary air nozzle is also negatively correlated with the pressure in the back pressure area inside the furnace of the incinerator). Its structure is simple. By connecting the chambers of multiple static pressure valves to the back pressure area inside the furnace of the incinerator through pressure balance pipes, the static pressure on the side of the static pressure slide plate close to the chamber can be eliminated, so that the static pressure slide plate is only affected by the spring force and the wind pressure static pressure on the other side during operation.
[0057] The above is only the preferred embodiment of the present invention, and it does not impose any form of limitation on the present invention; any ordinary technician in this industry can smoothly implement the present invention as shown in the accompanying drawings of the specification and described above; however, any slight changes, modifications, and equivalent changes made by those skilled in this professional field without departing from the technical solution of the present invention and using the technical content disclosed above are all equivalent embodiments of the present invention; at the same time, any equivalent changes, modifications, and evolutions made to the above embodiments based on the essential technology of the present invention still fall within the protection scope of the technical solution of the present invention.
Claims
1. A static pressure valve, characterized in that: The invention comprises an air distribution box (111), a cylinder sleeve (112), a static pressure slide plate (113), a sliding shaft (114), a throttle plate (115) and an elastic member (116); the cylinder sleeve (112) is fixedly mounted on one end of the air distribution box (111); a secondary air nozzle (1111) is arranged at one end of the air distribution box (111) away from the cylinder sleeve (112); a secondary air inlet (1112) is also arranged on the side wall of the air distribution box (111); the static pressure slide plate (113) is slidably and sealedly arranged in the cylinder sleeve (112); the cylinder sleeve (112), the static pressure slide plate (113) and the air distribution box (111) are jointly enclosed to form a chamber; the sliding shaft (114) is arranged along the axial direction of the static pressure slide plate (113) and is fixedly connected to the static pressure slide plate (113); One end of the sliding shaft (114) close to the air distribution box (111) is sealed and slidably penetrates into the air distribution box (111); the throttle plate (115) is arranged in the air distribution box (111) and is vertically connected to the corresponding end of the sliding shaft (114); the throttle plate (115) is aligned with the secondary air nozzle (1111); the elastic member (116) is arranged in the chamber, and the two ends of the elastic member (116) are respectively against the air distribution box (111) and the static pressure slide plate (113); the elastic force of the elastic member (116) is used to drive the static pressure slide plate (113) to slide away from the air distribution box (111); and the air distribution box (111) or the cylinder sleeve (112) is provided with a pressure balance interface (117) connected to the chamber.
2. The static pressure valve according to claim 1, characterized in that: It also includes a hollow limit plate (118), wherein the limit plate (118) is arranged at one end of the cylinder sleeve (112) away from the air distribution box (111), and one end of the sliding shaft (114) away from the air distribution box (111) passes through the limit plate (118) and passes out of the cylinder sleeve (112), and the limit plate (118) is used to limit the travel of the static pressure slide plate (113) sliding to a position away from the air distribution box (111).
3. The static pressure valve according to claim 2, characterized in that: A sliding hole (1181) for the sliding shaft (114) to pass through is arranged in the middle of the limiting plate (118), and a plurality of air holes (1182) are arranged at intervals in the circumferential direction at the edge of the limiting plate (118).
4. The static pressure valve according to claim 1, characterized in that: The elastic member (116) is a spring.
5. The static pressure valve according to claim 1, characterized in that: The pressure balance interface (117) is located inside the air distribution box (111).
6. A self-adjusting flow-balancing air distribution assembly, characterized in that: It comprises an air distribution main pipe (12) and a plurality of static pressure valves (11) as described in any one of claims 1 to 5, wherein one end of the air distribution main pipe (12) is open and forms an air inlet (121), and the other end of the air distribution main pipe (12) is blocked, and a plurality of secondary air distribution ports (122) are arranged at intervals along the length direction of the air distribution main pipe (12), a plurality of static pressure valves (11) are arranged in the air distribution main pipe (12), and correspond one-to-one to the plurality of secondary air distribution ports (122), and each of the secondary air nozzles (1111) is sealed and docked with the corresponding secondary air distribution port (122).
7. The self-adjusting flow-balancing air distribution assembly according to claim 6 is characterized in that: It also includes a plurality of adjusting members (13), each of which is installed on the air distribution main pipe (12) and corresponds one by one to the plurality of static pressure valves (11). The adjusting member (13) has a handle end located outside the air distribution main pipe (12) and an adjusting end located inside the air distribution main pipe (12). The adjusting end of each adjusting member (13) is aligned with an end of the corresponding sliding shaft (114) away from the air distribution box (111). The adjusting member (13) is used to squeeze the sliding shaft (114) to adjust the compression amount of the elastic member (116).
8. The self-adjusting flow-balancing air distribution assembly according to claim 7 is characterized in that: The adjusting member (13) is a fine-tuning bolt, and a threaded hole (123) is provided on the air distribution main pipe (12) at a location where the adjusting member (13) is provided. The adjusting member (13) is threadedly connected to the threaded hole (123). The threaded end of the adjusting member (13) constitutes the adjusting end, and the head of the adjusting member (13) constitutes the handle end. The adjusting member (13) is tightened or loosened to adjust the compression amount of the elastic member (116).
9. The self-adjusting flow-balancing air distribution assembly according to claim 8 is characterized in that: The static pressure valve (11) further comprises an abutment plate (119), wherein the abutment plate (119) is arranged outside the cylinder sleeve (112) and is located at an end of the cylinder sleeve (112) away from the air distribution box (111); the corresponding end of the sliding shaft (114) passes through the abutment plate (119) and is vertically connected to the abutment plate (119); the adjusting end of the adjusting member (13) is recessed with a limiting groove (131), and the adjusting member (13) and the sliding shaft (114) are coaxially distributed; the corresponding end of the sliding shaft (114) is inserted into the limiting groove (131), and the adjusting end of the adjusting member (13) abuts against the abutment plate (119).
10. An incinerator, characterized in that: It comprises an incinerator body (2), a plurality of pressure balancing pipes (3) and a self-adjusting equalizing air distribution assembly (1) as described in any one of claims 6 to 9, wherein the incinerator body (2) has a plurality of secondary air inlets (21), a plurality of secondary air distribution ports (122) and a plurality of secondary air inlets (21) correspond one to one, each of the secondary air distribution ports (122) is sealed and connected to a corresponding secondary air inlet (21), a plurality of pressure balancing pipes (3) and a plurality of static pressure valves (11) correspond one to one, one end of each of the pressure balancing pipes (3) is connected and communicated with a corresponding pressure balancing interface (117), and the other end of each of the pressure balancing pipes (3) is led to a back pressure area in the furnace of the incinerator body (2).