Horizontal flue ash hopper ash discharge valve

Abstract

The utility model relates to the technical field of ash discharge valve, concretely to a horizontal flue ash bucket ash conveying ash discharge valve, including the outlet of upper valve body and bunker intercommunication, its top is equipped with first discharge opening, lower valve body is established below upper valve body, the second discharge opening of lower valve body is linked with the lower part of lower valve body, and the lower part of lower valve body is linked with ash removal pipeline, upper valve is established at first discharge opening, and is opened and closed under the action of first swing subassembly, lower valve is established at second discharge opening, and is opened and closed under the action of second swing subassembly, auxiliary assembly is connected with first swing subassembly, second swing subassembly respectively, when upper valve is opened under the action of first swing subassembly, auxiliary assembly makes lower valve close more closely through second swing subassembly, the utility model has the advantages of good sealing, guaranteeing flue negative pressure balance stable etc.

Description

Technical Field

[0001] This utility model relates to the field of ash discharge valve technology, specifically a horizontal flue ash hopper conveying and ash discharge valve. Background Technology

[0002] Currently, single-flip ash discharge valves are widely used in the ash conveying system of horizontal flue ash hoppers in waste incinerators. However, they all have significant technical defects in actual operation, which adversely affect the stability of the system and the life of the equipment. The core problem of single-flip ash discharge valves is that the sealing performance and sealing structure design have shortcomings, resulting in poor sealing effect and serious air leakage. A large amount of outside air can easily seep into the flue, directly destroying the original negative pressure balance of the flue, and then causing a chain reaction of problems such as fly ash caking and ash hopper blockage. Utility Model Content

[0003] In view of this, the present invention provides a horizontal flue ash hopper conveying and unloading valve, which aims to solve the problems in the prior art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a horizontal flue ash hopper conveying and unloading valve, comprising: The upper valve body is connected to the outlet of the silo, and the top of it is equipped with the first discharge port; The lower valve body is located below the upper valve body. The second discharge port of the lower valve body is connected to the lower part of the lower valve body, and the lower part of the lower valve body is connected to the ash discharge pipe. An upper valve is located at the first discharge port and opens and closes under the action of the first swing assembly; The lower valve is located at the second discharge port and opens and closes under the action of the second swing assembly; An auxiliary component is connected to the first swing component and the second swing component respectively. When the upper valve is opened by the first swing component, the auxiliary component closes the lower valve more tightly through the second swing component.

[0005] A further improvement of this utility model is that the first swing assembly includes a first swing rod, which is horizontally disposed in the upper valve body, and its first end is fixedly connected to the upper valve, and its second end passes through the side wall of the upper valve body and is connected to the auxiliary assembly. The first swing rod is connected to a pivot shaft that passes through the side wall of the upper valve body, and a first counterweight is provided on the lower surface of the second end of the first swing rod.

[0006] A further improvement of this utility model is that the second swing assembly includes a second swing rod, which is horizontally disposed in the lower valve body, and its first end is fixedly connected to the lower valve. The second end passes through the side wall of the lower valve body and a second counterweight is provided on its lower surface. The second swing rod is connected to a rotating shaft that passes through the side wall of the lower valve body. When the auxiliary assembly is running, the upper surface of the second end of the second swing rod contacts or disengages from the auxiliary assembly.

[0007] A further improvement of this utility model is that the auxiliary component includes: The first rack is slidably disposed on the outside of the upper valve body, and the long slot at its upper end is slidably connected to the guide post at the second end of the first swing rod. The second rack is slidably disposed on the outside of the upper valve body and is positioned opposite to the first rack; The first gear is disposed between the first rack and the second rack, and meshes with the first rack and the second rack respectively; The upper end of the lower slider is fixedly connected to the lower end of the second rack, and the lower end of the lower slider is provided with a groove. The pressure block has its upper end inserted into the groove and slidably connected thereto. An elastic component is provided between the upper end of the pressure block and the upper end of the groove. After the lower end of the pressure block passes through the groove, it contacts or separates from the upper surface of the second end of the second swing rod.

[0008] A further improvement of this utility model is that the elastic component includes: An optical axis is vertically disposed at the top of the groove, with its lower end extending into the first channel at the upper end of the pressure block. The upper end of the first channel is connected to the outside. The first channel is provided with a cover. The lower end of the optical axis passes through the cover and is provided with a protrusion that matches the first channel. The diameter of the first channel is larger than the diameter of the optical axis. A spring is sleeved on the optical axis between the top of the groove and the upper end of the pressure block, with both ends of the spring connected to the top of the groove and the upper end of the pressure block, respectively.

[0009] A further improvement of this utility model is that the lower end of the pressure block is provided with a roller.

[0010] The technological advancements achieved by this utility model due to the adoption of the above technical solution are as follows: This utility model provides a horizontal flue ash hopper conveying and unloading valve. This application sets up double sealing nodes for the upper valve and the lower valve, and realizes the linkage control of "upper valve open, lower valve closed" through auxiliary components. When the upper valve opens to unload under the action of the first swing component, the auxiliary component further enhances the sealing force of the lower valve through the second swing component. Compared with the prior art, it can prevent outside air from seeping in from the connection end between the lower valve body and the ash discharge pipe. When the upper valve is closed, the lower valve can open and close normally according to the ash volume requirement. The double valves form a "relay seal", thereby solving the problem of serious air leakage in traditional equipment, ensuring the stability of the negative pressure balance in the flue, and preventing fly ash caking and ash hopper blockage caused by negative pressure imbalance. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the overall structure of the ash discharge valve described in this utility model; Figure 2 This is a schematic diagram of the first swing assembly of the ash discharge valve described in this utility model; Figure 3 This is a schematic diagram of the second swing assembly of the ash discharge valve described in this utility model; Figure 4 This is a schematic diagram of the auxiliary components of the ash discharge valve described in this utility model; Figure 5 This is a schematic diagram of the elastic component of the ash discharge valve described in this utility model.

[0013] Explanation of reference numerals in the attached figures: 10-Upper valve body, 101-First discharge port, 102-Upper valve, 11-Lower valve body, 111-Second discharge port, 112-Lower valve, 20-First swing assembly, 21-First swing rod, 211-Guide post, 22-First counterweight, 30-Second swing assembly, 31-Second swing rod, 32-Second counterweight, 40-Auxiliary assembly, 41-First rack, 411-Long slot, 42-Second rack, 43-First gear, 44-Lower slider, 441-Groove, 45-Pressure block, 451-Roller, 452-First channel, 453-Cap, 50-Elastic assembly, 51-Optical axis, 511-Boss, 52-Spring. Detailed Implementation

[0014] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, in the following description, specific details such as particular system structures and technologies are set forth for illustrative purposes rather than for limiting purposes, in order to provide a thorough understanding of the embodiments of the present invention. However, those skilled in the art should understand that the present invention can also be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid unnecessary details hindering the description of the present invention.

[0015] This utility model provides a horizontal flue ash hopper conveying and unloading valve, in conjunction with the appendix to the instruction manual. Figure 1 To be continued Figure 5 It can be seen that a horizontal flue ash hopper conveying and unloading valve mainly includes the following parts or components: upper valve body 10, lower valve body 11, upper valve 102, lower valve 112, and auxiliary components 40.

[0016] In this utility model, the upper valve body 10 is connected to the outlet of the silo, and its top is provided with a first discharge port 101; the lower valve body 11 is located below the upper valve body 10, and the second discharge port 111 of the lower valve body 11 is connected to the lower part of the lower valve body 11, and the lower part of the lower valve body 11 is connected to the ash discharge pipe; the upper valve 102 is located at the first discharge port 101 and is opened and closed under the action of the first swing component 20; the lower valve 112 is located at the second discharge port 111 and is opened and closed under the action of the second swing component 30; the auxiliary component 40 is connected to the first swing component 20 and the second swing component 30 respectively. When the upper valve 102 is opened under the action of the first swing component 20, the auxiliary component 40 makes the lower valve 112 close more tightly through the second swing component 30.

[0017] When the equipment is in its initial state and the ash content in the silo has not reached the discharge threshold, the upper valve 102 remains closed under the action of the first swing component 20, tightly covering the first discharge port 101 at the top of the upper valve body 10, preventing fly ash in the silo from entering the upper valve body 10 downwards; at the same time, the lower valve 112 is also closed under the action of the second swing component 30, sealing the second discharge port 111 at the bottom of the lower valve body 11, preventing outside air from seeping in from the connection end between the lower valve body 11 and the ash discharge pipe. As fly ash continues to accumulate in the silo, the ash weight gradually exceeds the balance threshold of the first swing component 20. Under the action of the fly ash gravity, the first swing component 20 begins to move and drives the upper valve 102 to rotate around its mounting axis, causing the upper valve 102 to gradually open from the closed state. When the discharge port 101 is opened, the fly ash in the hopper enters the upper valve body 10 through the first discharge port 101 and begins to be conveyed downward. During this process, the auxiliary component 40 connected to the first swing component 20 is triggered simultaneously. Since the auxiliary component 40 is associated with both the first swing component 20 and the second swing component 30, when the upper valve 102 is opened, the auxiliary component 40 applies downward pressure to the second swing component 30, forcing the lower valve 112 to further press the second discharge port 111 under the action of the second swing component 30, thus achieving the linkage effect of "upper valve open, lower valve tight". This ensures that the lower valve 112 has a stronger sealing force at this time, preventing outside air from seeping into the lower valve body 11 when fly ash enters the upper valve body 10, and ensuring that the negative pressure balance of the flue is not affected. When the fly ash in the silo reaches a certain amount, or when the ash weight drops below the balance threshold of the first swing component 20, the first swing component 20, under its own restoring force, drives the upper valve 102 to rotate in the opposite direction, gradually closing the first discharge port 101 and blocking the connection between the silo and the upper valve body 10. As the upper valve 102 closes, the triggering effect of the first swing component 20 on the auxiliary component 40 disappears, and the auxiliary component 40 no longer applies pressure to the second swing component 30. The second swing component 30 returns to a balanced state. At this time, the gravity of the fly ash temporarily stored in the upper valve body 10 gradually acts on the lower valve 112. When the fly ash gravity exceeds the balance threshold of the second swing component 30, the second swing component 30 starts to move and drives the lower valve 112 to open. The second discharge port 111 is opened, and the fly ash in the upper valve body 10 enters the ash discharge pipe at the bottom of the lower valve body 11 through the second discharge port 111, and is finally transported to the subsequent processing stage. After the fly ash in the upper valve body 10 is emptied, the lower valve 112 closes again under the reset force of the second swing component 30. The auxiliary component 40 resets with the first swing component 20, and the whole set of equipment returns to the initial standby state, waiting for the next round of ash accumulation and unloading cycle.

[0018] As one embodiment, in conjunction with the appendix to the specification Figure 2It is known that the first swing assembly 20 includes a first swing rod 21, which is horizontally disposed inside the upper valve body 10, and its first end is fixedly connected to the upper valve 102. Its second end passes through the side wall of the upper valve body 10 and is connected to the auxiliary assembly 40. The first swing rod 21 is connected to the pivot at the side wall of the upper valve body 10. The lower surface of the second end of the first swing rod 21 is provided with a first counterweight 22.

[0019] When the weight of the fly ash exceeds the balance threshold between the first counterweight 22 and the upper valve 102, the fly ash pressure will press down on the upper valve 102, thereby causing the first end of the first swing rod 21 fixedly connected to it to rotate downward, and its second end will rise upward. At this time, the first counterweight 22 is synchronously lifted, and the original balance is broken. As the first swing rod 21 continues to rotate, the upper valve 102 gradually disengages from the first discharge port 101, and the first discharge port 101 is opened, allowing the fly ash in the silo to enter the upper valve body 10 through the first discharge port 101. At the same time, as the second end of the first swing rod 21 rises upward, it will synchronously drive the auxiliary component 40 connected to it to move, providing power transmission for the subsequent sealing enhancement of the lower valve 112, realizing the synchronous triggering of "upper valve opening and auxiliary linkage". When the fly ash in the silo is delivered to a certain amount, the amount of ash in the silo decreases, and the pressure of the fly ash on the upper valve 102 decreases accordingly. When the fly ash pressure is lower than the weight of the first counterweight 22, the weight of the first counterweight 22 will regain dominance, pulling down the second end of the first swing rod 21, causing the first swing rod 21 to rotate in the opposite direction around the axis. Its second end will return to its original position downwards, while the first end will be lifted upwards, thereby driving the upper valve 102 to re-adhere to the first discharge port 101.

[0020] As one embodiment, in conjunction with the appendix to the specification Figure 3 It is known that the second swing assembly 30 includes a second swing rod 31, which is horizontally disposed inside the lower valve body 11, and its first end is fixedly connected to the lower valve 112. The second end passes through the side wall of the lower valve body 11 and the lower surface is provided with a second counterweight 32. The second swing rod 31 is connected to a rotating shaft that passes through the side wall of the lower valve body 11. When the auxiliary assembly 40 is running, the upper surface of the second end of the second swing rod 31 contacts or disengages from the auxiliary assembly 40.

[0021] As fly ash continues to accumulate inside the upper valve body 10, the pressure of the fly ash on the lower valve 112 gradually increases. When the fly ash pressure exceeds the balance threshold between the second counterweight 32 and the lower valve 112, the fly ash pressure presses down on the lower valve 112, causing the first end of the second swing rod 31 to rotate downwards. As the second swing rod 31 rotates around its axis, its second end rises upwards, and the second counterweight 32 is simultaneously lifted. The lower valve 112 gradually disengages from the second discharge port 111, and the second discharge port 111 becomes open, allowing the fly ash inside the upper valve body 10 to enter the ash discharge pipe through the second discharge port 111. Once the fly ash inside the upper valve body 10 is emptied, the pressure of the fly ash on the lower valve 112 disappears, and the gravity of the second counterweight 32 regains dominance, pulling the second end of the second swing rod 31 downwards to reset, causing the lower valve 112 to rise again and adhere to the second discharge port 111, restoring its initial closed state and preparing for the next round of unloading cycle.

[0022] As one embodiment, in conjunction with the appendix to the specification Figure 4 To be continued Figure 5 It is known that the auxiliary component 40 includes a first rack 41, which is slidably disposed on the outside of the upper valve body 10, and its upper end elongated slot 411 is slidably connected to the guide post 211 at the second end of the first swing rod 21; a second rack 42 is slidably disposed on the outside of the upper valve body 10 and is disposed opposite to the first rack 41; a first gear 43 is rotatably disposed between the first rack 41 and the second rack 42 and meshes with the first rack 41 and the second rack 42 respectively; the upper end of the lower slider 44 is fixedly connected to the lower end of the second rack 42, and the lower end of the lower slider 44 is provided with a groove 441; the upper end of the pressure block 45 extends into the groove 441 and is slidably connected thereto, and an elastic component 50 is provided between the upper end of the pressure block 45 and the upper end of the groove 441; after the lower end of the pressure block 45 passes through the groove 441, it contacts or disengages from the upper surface of the second end of the second swing rod 31. The elastic component 50 includes an optical shaft 51, vertically disposed at the top of the groove 441, with its lower end extending into the first channel 452 at the upper end of the pressure block 45. The upper end of the first channel 452 is connected to the outside. The first channel 452 is provided with a cover 453. The lower end of the optical shaft 51 passes through the cover 453 and has a boss 511 adapted to the first channel 452. The diameter of the first channel 452 is larger than the diameter of the optical shaft 51. A spring 52 is sleeved on the optical shaft 51 between the top of the groove 441 and the upper end of the pressure block 45. The two ends of the spring 52 are respectively connected to the top of the groove 441 and the upper end of the pressure block 45. A roller 451 is provided at the lower end of the pressure block 45.

[0023] When the first swing assembly 20 triggers the opening of the upper valve 102, the second end of the first swing rod 21 lifts upward, and the guide post 211 at its end moves upward synchronously. When the guide post 211 moves upward, it drives the first rack 41 to slide upward in the vertical direction through the long slot 411. At this time, the first rack 41 begins to rotate under the meshing transmission, and the first gear 43 meshes with the second rack 42, thereby driving the second rack 42 to slide downward in the vertical direction. When the second rack 42 slides downward, it will simultaneously drive the lower slider 44. As the sliding block 44 moves downward, it drives the pressure block 45 to move downward synchronously through the groove 441. When the pressure block 45 moves down until the roller 451 at its lower end contacts the upper surface of the second end of the second swing rod 31, pressure transmission begins. The downward force of the sliding block 44 is transmitted to the second swing rod 31 through the pressure block 45, forcing the second end of the second swing rod 31 to rotate downward. This, in turn, drives the lower valve 112 to press upward against the second discharge port 111 through the lever principle, achieving a sealing enhancement effect of "upper valve open, lower valve closed". At this time, the roller 451 at the lower end of the pressure block 45 rolls in contact with the upper surface of the second swing rod 31, which reduces frictional loss between them, ensures smooth pressure transmission, and extends the service life of the components.

[0024] When the pressure block 45 is subjected to the reverse force of the second swing rod 31, the spring 52 is compressed, absorbing the impact energy through elastic deformation to prevent deformation of the component due to rigid collision. If the pressure block 45 needs to move further downward to supplement pressure, the spring 52 will release its elastic force to push the pressure block 45, ensuring that the pressure block 45 always maintains stable contact with the second swing rod 31 and maintains the sealing force of the lower valve 112. In addition, the boss 511 at the lower end of the optical shaft 51 cooperates with the cover 453 of the first channel 452 to prevent the pressure block 45 from falling out of the groove 441, ensuring structural safety.

[0025] When the upper valve 102 completes unloading and the first swing assembly 20 resets (the second end of the first swing rod 21 falls downward), the guide column 211 moves downward accordingly. It drives the first rack 41 to slide downward through the long slot 411 of the first rack 41. When the first rack 41 moves downward, it drives the first gear 43 to rotate in the opposite direction, thereby meshing and driving the second rack 42 to slide upward. The upward sliding of the second rack 42 synchronously drives the lower slider 44 to move upward. The lower slider 44 pulls the pressure block 45 upward through the groove 441, so that the roller 451 at the lower end of the pressure block 45 gradually disengages from the upper surface of the second end of the second swing rod 31, and the pressure on the second swing rod 31 disappears. As the first swing component 20 is fully reset, the first rack 41, the first gear 43, the second rack 42, and the lower slider 44 all return to their initial positions. The pressure block 45 also returns to its initial state in the groove 441 under the reset action of the spring 52. The spring 52 of the elastic component 50 is released from compression, and the entire auxiliary component 40 returns to the standby state, waiting for the next round of linkage triggering with the first swing component 20.

[0026] It should be noted that in this patent application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitation, the phrase "comprising an element defined as..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0027] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model, and should all be included within the protection scope of this utility model.

Claims

1. A horizontal flue ash hopper conveying and unloading valve, characterized in that, include: The upper valve body is connected to the outlet of the silo, and the top of it is equipped with the first discharge port; The lower valve body is located below the upper valve body. The second discharge port of the lower valve body is connected to the lower part of the lower valve body, and the lower part of the lower valve body is connected to the ash discharge pipe. An upper valve is located at the first discharge port and opens and closes under the action of the first swing assembly; The lower valve is located at the second discharge port and opens and closes under the action of the second swing assembly; An auxiliary component is connected to the first swing component and the second swing component respectively. When the upper valve is opened by the first swing component, the auxiliary component closes the lower valve more tightly through the second swing component.

2. The ash conveying and unloading valve for a horizontal flue ash hopper according to claim 1, characterized in that, The first swing assembly includes a first swing rod, which is horizontally disposed in the upper valve body, and its first end is fixedly connected to the upper valve. Its second end passes through the side wall of the upper valve body and is connected to the auxiliary assembly. The first swing rod is connected to a pivot at the point where it passes through the side wall of the upper valve body. A first counterweight is provided on the lower surface of the second end of the first swing rod.

3. The ash conveying and unloading valve for a horizontal flue ash hopper according to claim 2, characterized in that, The second swing assembly includes a second swing rod, which is horizontally disposed in the lower valve body. Its first end is fixedly connected to the lower valve, and its second end is provided with a second counterweight on the lower surface after penetrating the side wall of the lower valve body. The second swing rod is connected to a pivot shaft penetrating the side wall of the lower valve body. When the auxiliary assembly is running, the upper surface of the second end of the second swing rod contacts or disengages from the auxiliary assembly.

4. The ash conveying and unloading valve for a horizontal flue ash hopper according to claim 3, characterized in that, The auxiliary components include: The first rack is slidably disposed on the outside of the upper valve body, and the long slot at its upper end is slidably connected to the guide post at the second end of the first swing rod. The second rack is slidably disposed on the outside of the upper valve body and is positioned opposite to the first rack; The first gear is disposed between the first rack and the second rack, and meshes with the first rack and the second rack respectively; The upper end of the lower slider is fixedly connected to the lower end of the second rack, and the lower end of the lower slider is provided with a groove. The pressure block has its upper end inserted into the groove and slidably connected thereto. An elastic component is provided between the upper end of the pressure block and the upper end of the groove. After the lower end of the pressure block passes through the groove, it contacts or separates from the upper surface of the second end of the second swing rod.

5. The ash conveying and unloading valve for a horizontal flue ash hopper according to claim 4, characterized in that, The elastic component includes: An optical axis is vertically disposed at the top of the groove, with its lower end extending into the first channel at the upper end of the pressure block. The upper end of the first channel is connected to the outside. The first channel is provided with a cover. The lower end of the optical axis passes through the cover and is provided with a protrusion that matches the first channel. The diameter of the first channel is larger than the diameter of the optical axis. A spring is sleeved on the optical axis between the top of the groove and the upper end of the pressure block, with both ends of the spring connected to the top of the groove and the upper end of the pressure block, respectively.

6. The ash conveying and unloading valve for a horizontal flue ash hopper according to claim 4, characterized in that, The lower end of the pressure block is equipped with rollers.

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