Air-lift rebound flue cleaning device

Abstract

This utility model relates to an air-lift rebound flue cleaning device, comprising a cylinder seat, a piston movement assembly, and a cleaning frame. The cylinder seat is a tubular structure; one end of the cylinder seat is fixed to the flue wall and connected to an external air source, while the inner side of the other end is movably connected to the piston movement assembly with a small clearance. The cleaning frame is a hollow cylindrical structure that matches the inner contour of the flue. The cleaning frame is fixedly connected to the upper stepped surface of the piston movement assembly by a locking nut. This utility model effectively avoids the risk of leakage due to easy damage to the seal, achieves cleaning of high-temperature and high-risk pipelines such as flues, ensures the unobstructed flow of steam flues, and provides a guarantee for the safe and continuous operation of oil-based solid waste treatment equipment.

Description

Technical Field

[0001] This utility model relates to the field of environmental protection technology, specifically to an air-lift rebound flue cleaning device. Background Technology

[0002] In the treatment of oily hazardous waste, thermal desorption is commonly used to separate oil, water, and solid phases. Thermal desorption separates oil and water vapors from the solid phase by heating the oily solid phase. The steam at the evaporation point carries a large amount of dust, which easily adheres to the steam outlet pipe, clogging it and leading to the leakage of high-temperature flammable gases. One treatment method uses a motor-driven auger to clean the pipe wall, requiring a dynamic seal at the auger drive shaft. In a high-temperature, dust-laden environment, this dynamic seal is easily damaged, leading to leakage and posing a significant safety hazard to oily solid waste treatment. Another method is direct gas purging. However, low pressure results in poor purging, while high pressure can cause instantaneous overpressure within the reactor, posing a risk of reactor seal leakage. To address this issue of minor dust accumulation in the flue, a dust removal device that can actively clean dust from the flue without increasing the number of potential leakage points needs to be developed.

[0003] The shortcomings of existing technology are:

[0004] 1. Existing technology uses a motor-driven auger blade to clean the pipe wall. Since a dynamic seal needs to be installed at the auger drive shaft, the dynamic seal is easily damaged and leaks can easily occur in a high-temperature, dusty environment, thus posing a great safety hazard to the treatment of oily solid waste.

[0005] 2. Existing technology uses direct gas purging for unblocking. If the pressure is low, the unblocking effect is poor. If the pressure is high, it will cause instantaneous overpressure inside the reactor, and the reactor seal will be at risk of leakage. Summary of the Invention

[0006] This utility model addresses the aforementioned problems by providing an air-lift rebound flue cleaning device. Its purpose is to effectively avoid the risk of leakage caused by easy damage to dynamic seals, achieve cleaning of high-temperature and high-risk pipelines such as flues, ensure the smooth flow of steam flues, and provide a guarantee for the safe and continuous operation of oil-based solid waste treatment equipment.

[0007] To solve the above problems, the technical solution provided by this utility model is as follows:

[0008] A pneumatic-lift rebound flue cleaning device includes a cylinder seat, a piston movement assembly, and a cleaning frame. The cylinder seat is a tubular structure; one end of the cylinder seat is fixed to the flue wall and connected to an external air source, while the inner side of the other end is movably connected to the piston movement assembly with a small clearance fit. The cleaning frame is a hollow columnar structure that matches the inner contour of the flue. The cleaning frame is fixedly connected to the upper stepped surface of the piston movement assembly via a locking nut.

[0009] Preferably, the piston motion assembly includes the upper stepped surface, the push rod body, the push rod piston, the return spring, and the spring cap;

[0010] The diameter of the push rod piston is larger than the diameter of the push rod body; the return spring is sleeved around the push rod body; the push rod body passes through the pressure cover through hole on the spring cover; then the spring cover is fixedly connected to one end of the cylinder seat, and the extension range of the return spring is limited between the push rod piston and the spring cover.

[0011] Preferably, the cleaning frame includes a cleaning component and a fixing bracket, wherein: the cleaning component is an annular structure that matches the inner contour of the flue and is used to scrape the inner wall of the flue; the fixing bracket is used to fix the cleaning component; the fixing bracket has a bracket through hole at its axis; the upper stepped surface of the piston movement component passes through the bracket through hole and the pressure plate in sequence and is then fixedly connected to the locking nut.

[0012] Preferably, the cylinder seat is an L-shaped tubular structure.

[0013] Preferably, the dust removal device uses inert gas as a gas source to drive the push rod piston to move within the cylinder seat.

[0014] Preferably, the push rod piston is provided with a gas connection port that extends through the upper and lower surfaces.

[0015] Preferably, a gap is provided between the outer circle of the push rod piston and the inner wall of the cylinder seat to allow the inert gas to pass through.

[0016] Preferably, the thrust of the air source is greater than the sum of the return spring force and the weight of the sweeping frame.

[0017] Preferably, the spring force of the return spring when it resets is greater than the frictional resistance between the cleaning frame and the inner wall of the flue.

[0018] Compared with the prior art, this utility model has the following advantages:

[0019] 1. Since the cleaning device of this utility model does not have a dynamic seal, the risk of leakage caused by easy damage to the dynamic seal is effectively avoided.

[0020] 2. Because the cleaning device of this utility model has little impact on the pressure inside the flue, it can clean high-temperature and high-risk pipelines such as flues, thereby ensuring the smooth flow of steam flues and providing a guarantee for the safe and continuous operation of oil-based solid waste treatment equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the installation structure of the dust removal device according to a specific embodiment of this utility model;

[0022] Figure 2 This is a cross-sectional schematic diagram of an air-lift flue dust removal device according to a specific embodiment of the present utility model.

[0023] Figure 3 This is an exploded view of an air-lift flue dust removal device according to a specific embodiment of the present invention.

[0024] The components include: 1. Cylinder seat; 1.1. Purge port; 2. Piston movement assembly; 2.1. Upper stepped surface; 2.2. Push rod body; 2.3. Push rod piston; 2.4. Return spring; 2.5. Spring cover; 2.5.1. Cover through hole; 4. Cleaning frame; 4.1. Cleaning assembly; 4.2. Fixed bracket; 4.2.1. Bracket through hole; 6. Pressure plate; 7. Locking nut; I. Thermal desorption vessel body; II. Ash removal device. Detailed Implementation

[0025] The present invention will be further illustrated below with reference to specific embodiments. It should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention. After reading the present invention, any modifications of the present invention in various equivalent forms by those skilled in the art will fall within the scope defined by the appended claims.

[0026] Air-lift rebound flue cleaning device, such as Figure 2 , Figure 3 As shown, it includes a cylinder seat 1, a piston movement assembly 2, and a cleaning frame 4, wherein: the cylinder seat 1 is a tubular structure; one end of the cylinder seat 1 is fixed to the flue wall 8 and connected to an external air source, and the inner side of the other end is movably connected to the piston movement assembly 2 with a small clearance fit; the cleaning frame 4 is a hollow column structure that matches the inner contour of the flue; the cleaning frame 4 is fixedly connected to the upper stepped surface 2.1 of the piston movement assembly 2 by a locking nut 7.

[0027] It should be noted that, as Figure 1 As shown, the cleaning device II is fixed on the flue shell of the thermal desorption vessel I.

[0028] It should be noted that the piston motion assembly 2 includes an upper stepped surface 2.1, a push rod body 2.2, a push rod piston 2.3, a return spring 2.4, and a spring cap 2.5.

[0029] The diameter of the push rod piston 2.3 is larger than the diameter of the push rod body 2.2; the return spring 2.4 is sleeved on the periphery of the push rod body 2.2; the push rod body 2.2 passes through the pressure cover through hole 2.5.1 on the spring cover 2.5; then the spring cover 2.5 is fixedly connected to one end of the cylinder seat 1, and the extension range of the return spring 2.4 is limited between the push rod piston 2.3 and the spring cover 2.5.

[0030] It should be further explained that the dust removal device II uses inert gas as a gas source to drive the push rod piston 2.3 to move within the cylinder seat 1.

[0031] It should be further explained that the push rod piston 2.3 is provided with a gas connection port that runs through the upper and lower surfaces; or there is a gap between the outer circle of the push rod piston 2.3 and the inner wall of the cylinder seat 1 for inert gas to pass through; so that gas can slowly pass through into the flue when the gas source is shut off and the spring is extended.

[0032] It should be noted that the cleaning frame 4 includes a cleaning component 4.1 and a fixed bracket 4.2. The cleaning component 4.1 is a ring-shaped structure that matches the inner contour of the flue and is used to scrape the inner wall of the flue. The fixed bracket 4.2 is used to fix the cleaning component 4.1. The fixed bracket 4.2 has a bracket through hole 4.2.1 at its axis. The upper stepped surface 2.1 of the piston movement component 2 passes through the bracket through hole 4.2.1 and the pressure plate 6 and is then fixedly connected to the locking nut 7.

[0033] It should be noted that cylinder seat 1 has an L-shaped tubular structure.

[0034] It should be noted that the thrust of the air source is greater than the sum of the spring force of the return spring 2.4 and the weight of the sweeping frame 4.

[0035] It should be noted that the spring force of the return spring 2.4 when it is reset is greater than the frictional resistance between the cleaning frame 4 and the inner wall of the flue.

[0036] It should be noted that the dust removal device II can achieve cleaning by turning on and off an external air source.

[0037] It should be noted that when the flue is blocked, inert gas is introduced through the purge port 1.1 at one end of the cylinder seat 1. Under the pressure of the inert gas, the push rod piston 2.3 compresses the return spring 2.4, pushing the cleaning frame 4 upward to scrape the flue wall. When the external inert gas is blocked by the valve, the compressed gas between the cylinder seat 1 and the push rod piston 2.3 leaks into the flue through the small gap between the piston of the push rod piston 2.3 and the cylinder seat 1. Under the elastic force of the return spring 2.4, the push rod piston 2.3 moves downward back to the starting position. By intermittently introducing compressed inert gas into the cylinder seat 1, the cleaning frame 4 reciprocates within the flue, thus achieving the cleaning function.

[0038] In the above detailed description, various features are combined together in a single embodiment to simplify this disclosure. This approach to disclosure should not be construed as reflecting an intention that embodiments of the claimed subject matter require more features than are explicitly stated in each claim. Rather, as reflected in the appended claims, the present invention is in a state with fewer features than all of the disclosed individual embodiments. Therefore, the appended claims are hereby clearly incorporated into the detailed description, wherein each claim stands alone as a preferred embodiment of the present invention.

[0039] The disclosed embodiments have been described above to enable any person skilled in the art to implement or use this invention. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit and scope of this disclosure. Therefore, this disclosure is not limited to the embodiments given herein, but is consistent with the widest scope of the principles and novel features disclosed in this application.

[0040] The foregoing description includes examples of one or more embodiments. It is certainly impossible to describe all possible combinations of components or methods in order to describe the above embodiments, but those skilled in the art will recognize that further combinations and arrangements of the various embodiments are possible. Therefore, the embodiments described herein are intended to cover all such changes, modifications, and variations that fall within the scope of the appended claims. Furthermore, the term "comprising" as used in the specification or claims is interpreted in a manner similar to the term "including," as interpreted when used as a conjunction in the claims. Additionally, the use of any term "or" in the specification of the claims is intended to mean "non-exclusive or."

[0041] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A gas-lift rebound flue dust removal device, characterized in that: The assembly includes a cylinder seat (1), a piston motion assembly (2), and a cleaning frame (4), wherein: the cylinder seat (1) is a tubular structure; one end of the cylinder seat (1) is fixed to the flue wall (8) and connected to an external air source, and the inner side of the other end is movably connected to the piston motion assembly (2) with a small clearance fit; the cleaning frame (4) is a hollow column structure that matches the inner contour of the flue; the cleaning frame (4) is fixedly connected to the upper stepped surface (2.1) of the piston motion assembly (2) by a locking nut (7).

2. The air-lift rebound flue dust removal device according to claim 1, characterized in that: The piston motion assembly (2) includes the upper stepped surface (2.1), the push rod body (2.2), the push rod piston (2.3), the return spring (2.4), and the spring cap (2.5); The diameter of the push rod piston (2.3) is larger than the diameter of the push rod body (2.2); the return spring (2.4) is sleeved around the push rod body (2.2); the push rod body (2.2) passes through the cover through hole (2.5.1) on the spring cover (2.5); then the spring cover (2.5) is fixedly connected to one end of the cylinder seat (1), and the extension range of the return spring (2.4) is limited between the push rod piston (2.3) and the spring cover (2.5).

3. The air-lift rebound flue dust removal device according to claim 2, characterized in that: The cleaning frame (4) includes a cleaning component (4.1) and a fixed bracket (4.2), wherein: the cleaning component (4.1) is an annular structure that matches the inner contour of the flue and is used to scrape the inner wall of the flue; the fixed bracket (4.2) is used to fix the cleaning component (4.1); the fixed bracket (4.2) has a bracket through hole (4.2.1) at its axis; the upper stepped surface (2.1) of the piston movement component (2) passes through the bracket through hole (4.2.1) and the pressure plate (6) and is then fixedly connected to the locking nut (7).

4. The air-lift rebound flue dust removal device according to claim 3, characterized in that: The cylinder seat (1) is an L-shaped tubular structure.

5. The air-lift rebound flue dust removal device according to claim 4, characterized in that: The cleaning device (II) uses inert gas as a gas source to drive the push rod piston (2.3) to move within the cylinder seat (1).

6. The air-lift rebound flue dust removal device according to claim 5, characterized in that: The pusher piston (2.3) is provided with a gas connection port that runs through the upper and lower surfaces.

7. The air-lift rebound flue dust removal device according to claim 5, characterized in that: A gap is provided between the outer circle of the push rod piston (2.3) and the inner wall of the cylinder seat (1) for the inert gas to pass through.

8. The air-lift rebound flue dust removal device according to any one of claims 6 to 7, characterized in that: The thrust of the air source is greater than the sum of the elastic force of the return spring (2.4) and the weight of the sweeping frame (4).

9. The air-lift rebound flue dust removal device according to claim 8, characterized in that: The spring force of the return spring (2.4) when it is reset is greater than the frictional resistance between the cleaning frame (4) and the inner wall of the flue.

Images