A high sealing wear-resistant double-layer ash valve device

Abstract

The utility model discloses a kind of high sealing wear-resistant double-layer ash valve devices, it is related to ash valve technical field.The utility model includes: valve body, the top of the valve body is provided with upper chute, the bottom of the valve body is provided with lower chute, the middle part inside the valve body is provided with middle chute, the inside of the valve body and located upper chute bottom side is provided with upper valve gate.The utility model is provided with the setting of ceramic lining plate embedded in the inner wall of sealing ring, upper chute, middle chute and lower chute, one side of valve plate transmission mechanism is equipped with valve plate rotary drive device and stroke control device, internal valve plate and material contact surface surfacing wear-resistant alloy, long-life sealing ring is high-temperature-resistant aramid woven material combined with silicone rubber composition, greatly improve the service life of valve plate and sealing ring, upper chute, middle chute and lower chute and material contact surface inlay wear-resistant ceramic lining plate or spray welding tungsten carbide, extend the service life of chute, internal valve plate and long-life sealing ring are pasted, realize zero air leakage.

Description

Technical Field

[0001] This utility model belongs to the field of ash discharge valves, specifically, it relates to a high-sealing, wear-resistant double-layer ash discharge valve device. Background Technology

[0002] Existing boilers or waste heat boilers typically have vertically arranged baffled flues. As the flue gas flows through the flue, dust settles. A dust collection hopper is usually installed at the bottom of the flue to collect the dust particles. When the flue is full of dust, ash removal is required.

[0003] Chinese Patent Publication No. CN216335397U discloses a scraper-type ash discharge valve device, including a housing with a cylindrical cavity inside. The housing has an inlet at the top and an outlet at the bottom, both connected to the cavity. A mounting shaft concentric with the cavity is fixed within the cavity, extending in the front-rear direction. A bearing is mounted on the mounting shaft, and multiple scrapers are evenly distributed circumferentially on the outer ring of the bearing. These scrapers divide the inner cavity into several relatively independent spaces. Each scraper consists of two inclined plates forming a V-shape. Compared to existing technologies, this invention has the following advantages: it avoids ash discharge valve jamming and material blockage, thus ensuring production stability.

[0004] However, the poor sealing of the material discharge part leads to dust leakage, which reduces the efficiency of ash discharge from the valve. In addition, the material of the contact surface between the device and the material is not wear-resistant, resulting in a short service life of the overall ash discharge device.

[0005] In view of this, this utility model is hereby proposed. Utility Model Content

[0006] The technical problem to be solved by this utility model is to overcome the shortcomings of the prior art and provide a high-sealing and wear-resistant double-layer ash discharge valve device. This solves the problems mentioned in the background art, such as poor sealing of the material discharge part, which leads to dust leakage and reduces the efficiency of ash discharge by the valve, and the lack of wear resistance of the material of the contact surface between the device and the material, which leads to a short service life of the overall ash discharge device.

[0007] To solve the above-mentioned technical problems, the basic concept of the technical solution adopted by this utility model is as follows:

[0008] A high-sealing, wear-resistant, double-layer ash discharge valve device includes: a valve body, an upper chute at the top of the valve body, a lower chute at the bottom of the valve body, a middle chute in the middle part of the valve body, an upper valve inside the valve body located at the bottom of the upper chute, and a lower valve located at the bottom of the middle chute.

[0009] Optionally, the inner walls of the upper chute, middle chute and lower chute are all fitted with ceramic liners.

[0010] Optionally, a sealing ring is provided on the bottom surface of both the upper chute and the middle chute, wherein the sealing ring is in the shape of a straight ring or a figure-eight shape.

[0011] Optionally, both the upper and lower valves are provided with valve plates inside, and the surface of the valve plates is made of wear-resistant alloy through welding.

[0012] Optionally, the valve plate is provided with a valve plate transmission mechanism inside, and a valve plate rotation drive device and a stroke control device are installed on one side of the valve plate transmission mechanism.

[0013] Optionally, the driving state of the valve plate rotation drive device can be pneumatic, decelerated electric, electro-hydraulic, or hydraulic.

[0014] By adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art. Of course, any product implementing the present invention does not necessarily need to achieve all of the following advantages at the same time:

[0015] 1. By embedding ceramic liners into the inner walls of the sealing ring, upper chute, middle chute, and lower chute, a valve plate rotation drive device and a stroke control device are installed on one side of the valve plate transmission mechanism. The internal valve plate is welded with wear-resistant alloy and long-life sealing rings on the material contact surface, which greatly improves the service life of the valve plate and sealing rings. The upper chute, middle chute, and lower chute are inlaid with wear-resistant ceramic liners or sprayed with tungsten carbide on the material contact surface, extending the service life of the chute. The internal valve plate fits snugly with the long-life sealing ring, achieving zero air leakage. The valve body is designed with an upper valve, a middle hopper, and a lower valve structure. A high-temperature resistant sealing strip is set around the front, making it easy to open and close and providing strong sealing performance.

[0016] The specific embodiments of this utility model will be described in further detail below with reference to the accompanying drawings. Attached Figure Description

[0017] The accompanying drawings described below are merely some embodiments. Those skilled in the art can obtain other drawings based on these drawings without any creative effort. In the drawings:

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

[0019] Figure 2 This is a schematic diagram of the upper valve structure;

[0020] Figure 3 This is a schematic diagram of the upper chute structure;

[0021] Figure 4 This is a schematic diagram of the sealing ring structure;

[0022] Figure 5 This is a schematic diagram of the valve plate rotation drive device.

[0023] The attached diagram lists the components represented by each number as follows:

[0024] 1. Valve body; 2. Upper chute; 3. Lower chute; 4. Middle chute; 5. Upper valve; 6. Lower valve; 7. Sealing ring; 8. Valve plate; 9. Valve plate transmission mechanism; 10. Valve plate rotation drive device; 11. Stroke control device.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings.

[0027] Please see Figure 1-5 As shown, this embodiment provides a high-sealing, wear-resistant double-layer ash discharge valve device, including: a valve body 1, an upper chute 2 at the top of the valve body 1, a lower chute 3 at the bottom of the valve body 1, a middle chute 4 in the middle of the valve body 1, an upper valve 5 inside the valve body 1 located at the bottom of the upper chute 2, and a lower valve 6 located at the bottom of the middle chute 4. The inner walls of the upper chute 2, middle chute 4, and lower chute 3 are fitted with ceramic liners. A valve plate rotation drive device 10 and a stroke control device 11 are installed on one side of the valve plate transmission mechanism 9. The inner valve plate 8 has a wear-resistant alloy welded to the material contact surface, and the long-life sealing ring 7 is a high-temperature resistant aramid woven material and silicone rubber composition, which greatly improves the service life of the valve plate 8 and the sealing ring 7.

[0028] One application of this embodiment is as follows: the upper chute 2, middle chute 4, and lower chute 3 are inlaid with wear-resistant ceramic liners or spray-welded with tungsten carbide on their material contact surfaces to extend the service life of the chute. The internal valve plate 8 fits snugly with the long-life sealing ring 7 to achieve zero air leakage. Furthermore, the valve body 1 is designed with an upper valve, a middle hopper, and a lower valve structure, and a high-temperature resistant sealing strip is provided around the front, making it easy to open and close and providing strong sealing performance. It should be noted that all electrical equipment involved in this application can be powered by a storage battery or an external power source.

[0029] like Figure 2 As shown, the inner walls of the upper chute 2, middle chute 4 and lower chute 3 in this embodiment are all embedded with ceramic liners, which extend the service life of the chute.

[0030] like Figure 4As shown, in this embodiment, sealing rings 7 are provided on the bottom surfaces of the upper chute 2 and the middle chute 4. The sealing rings 7 are made of a high-temperature resistant aramid woven fabric and a silicone composition. The sealing rings 7 are either straight or figure-eight shaped. The use of sealing rings 7, made of a high-temperature resistant aramid woven fabric and a silicone composition, improves the service life of the valve plate 8 and the sealing rings 7.

[0031] like Figure 2 As shown, in this embodiment, valve plates 8 are provided inside both the upper valve 5 and the lower valve 6. The surface of the valve plate 8 is made of wear-resistant alloy by overlay welding. The overlay welding of wear-resistant alloy greatly improves the service life of the valve plate 8 and the sealing ring 7.

[0032] like Figure 5 As shown, in this embodiment, the valve plate 8 is internally provided with a valve plate transmission mechanism 9, and a valve plate rotation drive device 10 and a stroke control device 11 are installed on one side of the valve plate transmission mechanism 9. The driving state of the valve plate rotation drive device 10 can be pneumatic, decelerated electric, electro-hydraulic, and hydraulic. The valve plate rotation drive device 10 and the stroke control device 11 are set up so that the opening and closing actions of the upper and lower valves are controlled by a microcomputer controller, which controls the opening and closing actions of the valve plate 8, providing convenience for removing metal impurities from materials through the high-maintenance door.

[0033] This utility model is not limited to the above-described embodiments. Anyone should know that structural changes made under the guidance of this utility model, and any technical solutions that are the same as or similar to this utility model, fall within the protection scope of this utility model. Technical aspects, shapes, and structures not described in detail in this utility model are all publicly known technologies.

Claims

1. A high-sealing, wear-resistant, double-layer ash discharge valve device, characterized in that, include: The valve body (1) has an upper chute (2) at its top and a lower chute (3) at its bottom. A middle chute (4) is provided in the middle of the valve body (1). An upper valve (5) is provided inside the valve body (1) and located at the bottom of the upper chute (2). A lower valve (6) is provided at the bottom of the middle chute (4). The inner walls of the upper chute (2), middle chute (4) and lower chute (3) are all fitted with ceramic liners. The bottom surfaces of the upper chute (2) and middle chute (4) are all provided with sealing rings (7). The sealing rings (7) are straight or figure-eight shaped. The upper valve (5) and lower valve (6) are both provided with valve plates (8). The surface of the valve plates (8) is made of wear-resistant alloy weld overlay.

2. The high-sealing, wear-resistant double-layer ash discharge valve device according to claim 1, characterized in that, The valve plate (8) is provided with a valve plate transmission mechanism (9) inside, and a valve plate rotation drive device (10) and a stroke control device (11) are installed on one side of the valve plate transmission mechanism (9).

3. The high-sealing, wear-resistant double-layer ash discharge valve device according to claim 2, characterized in that, The driving state of the valve plate rotation drive device (10) can be pneumatic, decelerated electric, electro-hydraulic and hydraulic.

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