Fire-retardant cyclone separator for emergency discharge pipeline of secondary combustion chamber

By designing the cyclone separation component and the venting component, the problem of excessive pressure caused by gas volume pressure in the emergency exhaust device of the secondary combustion chamber is solved, realizing gas-solid separation and automatic pressure relief, and improving the fire protection function and service life of the equipment.

CN224230014UActive Publication Date: 2026-05-12JIANGSU QUANNENG ELECTROMECHANICAL EQUIP ENG LTD BY SHARE LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
JIANGSU QUANNENG ELECTROMECHANICAL EQUIP ENG LTD BY SHARE LTD
Filing Date
2025-05-22
Publication Date
2026-05-12

AI Technical Summary

Technical Problem

The existing emergency exhaust device for the secondary combustion chamber is unable to expel the accumulated gas in a timely manner, resulting in excessively high device pressure and easy equipment failure.

Method used

A cyclone separator and a venting assembly were designed. The cyclone separator separates gas and solids through a rotating shaft and fan blades, while the venting assembly automatically depressurizes through a spring and a retaining block, ensuring that the gas is automatically discharged when it reaches the required pressure.

Benefits of technology

It achieves gas-solid separation and automatic pressure relief, improves the fire resistance and service life of the device, and avoids equipment failure.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model provides a fire-retardant cyclone separator for an emergency discharge pipeline of a secondary combustion chamber, which relates to the technical field of discharge pipelines, and particularly comprises a discharge pipe body, an exhaust pipe, a cyclone separator, a cyclone separator, a gas outlet pipe, a gas inlet pipe, a gas outlet pipe, a gas outlet pipe, a gas inlet pipe and a gas outlet pipe, and is characterized in that the exhaust pipe is communicated with one end of the gas outlet pipe far away from the discharge pipe body; the cyclone separation assembly is arranged between the discharging pipe body and the air leakage shell, and the cyclone separation assembly is used for conducting gas-solid separation on gas entering the discharging pipe body and meanwhile conducting slit heat dissipation; according to the device, the gas can continuously enter the gas release shell, so that the gas enters the ventilation pipe through the ventilation hole, and along with gradual increase of the gas pressure of an inner cavity of the ventilation pipe, the spring is extruded to contract, so that the abutting and buckling block is separated from the blocking position of the ventilation pipe; therefore, gas enters the exhaust pipe through the breather pipe to be discharged, automatic pressure relief of the device is facilitated when the device reaches an air pressure value, and the service life of the device is prolonged.
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Description

Technical Field

[0001] This utility model relates to the field of emission pipeline technology, specifically to a flame-arresting cyclone separator for emergency emission pipelines in a secondary combustion chamber. Background Technology

[0002] As people's living standards improve, the amount of domestic waste generated is also increasing, putting unprecedented pressure on the urban environment. The reduction and harmless treatment of domestic waste has become urgent. At present, the methods for treating domestic waste in China include sanitary landfill and incineration. Incineration has many advantages, such as saving space, rapid stabilization, significant volume reduction, and relatively easy control of odor from domestic waste, and is therefore widely promoted.

[0003] A search revealed a Chinese patent authorization announcement number: CN213655838U, which describes an emergency emission device for the secondary combustion chamber of a rotary kiln. The device includes a cylindrical valve body installed at the top of the emergency emission chimney pipe of the secondary combustion chamber. A valve cover is located at the top of the valve body, and a connecting frame rotatable around a horizontal axis is also located at the top of the valve body. The valve cover is mounted on the connecting frame. The device also includes a drive cylinder for applying force to the connecting frame to control the opening / closing of the valve cover. The drive cylinder is connected to a control valve for controlling its operation, and the control valve is connected to a gas pressure signal inside the valve body. While this device can ensure the normal operation of the rotary kiln and secondary combustion chamber combustion system and reduce the economic expenditure of replacing detonation plates, it is difficult to promptly discharge accumulated gas when it reaches a certain pressure value, which can easily lead to excessive pressure and equipment failure. Therefore, we have made an improvement by proposing a flame-arresting cyclone separator for the emergency emission pipeline of the secondary combustion chamber. Utility Model Content

[0004] The purpose of this invention is to address the problem that current device designs often fail to promptly release accumulated gas at a certain pressure, which can easily lead to excessive pressure and equipment malfunction.

[0005] To achieve the above-mentioned utility model objectives, the present utility model provides the following technical solution: gas is continuously introduced into the vent shell, allowing it to enter the vent pipe through the vent hole. As the gas pressure inside the vent pipe gradually increases, the compression spring contracts, causing the latch block to disengage from the vent pipe's sealing point, thereby allowing the gas to pass through the vent pipe into the exhaust pipe and be discharged, thus improving the aforementioned problem.

[0006] The application is as follows:

[0007] The emergency exhaust pipe flame arrestor cyclone separator for the secondary combustion chamber includes an exhaust pipe body, the exhaust end of which is connected to a vent shell, including:

[0008] The exhaust pipe is connected to the end of the vent housing that is furthest from the exhaust pipe body;

[0009] Cyclone separator assembly is located between the discharge pipe body and the vent shell, and the cyclone separator assembly is used to separate the gas and solid in the gas entering the discharge pipe body while dissipating heat through the slit.

[0010] The venting assembly is located between the venting shell and the exhaust pipe, and is used to vent the gas in the venting shell when the pressure value is reached.

[0011] As a preferred technical solution of this application, the cyclone separator includes a support frame fixedly connected to the inner wall of the discharge pipe, a motor fixedly installed at the end of the support frame away from the discharge pipe, a rotating shaft fixedly connected to the output end of the motor, and fan blades fixedly connected to the outer surface of the rotating shaft.

[0012] As a preferred technical solution of this application, the cyclone separator includes a metal wire mesh fixedly connected to the inner wall of the discharge pipe, a scraper fixedly connected to the end of the rotating shaft away from the motor, a discharge port opened on the discharge pipe, and a collection box magnetically connected to the discharge port.

[0013] As a preferred technical solution of this application, the venting assembly includes a vent pipe fixedly connected to the inner wall of the venting shell, a vent hole is provided on the vent pipe, and a push rod is slidably connected to the center of the vent pipe;

[0014] As a preferred technical solution of this application, a piston block is fixedly connected to one end of the push rod, and a latching block is fixedly connected to the other end of the push rod;

[0015] As a preferred technical solution of this application, the venting assembly also includes a transfer cylinder fixedly connected to the outer surface of the venting shell, and a spring fixedly connected to the end of the piston block away from the transfer cylinder.

[0016] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0017] In the scheme of this application:

[0018] (1) By using the cyclone separation component, the rotation of the rotating shaft can make the fan blades and scraper rotate. The wind force generated by the rotation of the fan blades can accelerate the gas into the venting shell. On the other hand, in conjunction with the metal wire mesh, it can block the solid particles contained in the gas, centrifugally throw away the solid particles, and make the solid particles fall into the collection box. The gas passes through the metal wire mesh and enters the venting shell. The metal wire mesh can dissipate heat through the narrow gaps, which is beneficial for the device to separate solid and gas while increasing the fire resistance of the device.

[0019] (2) By setting the venting component, gas can be continuously introduced into the venting shell and enter the venting pipe through the vent hole. As the gas pressure in the venting pipe gradually increases, the compression spring contracts, causing the latch block to disengage from the venting pipe. This allows the gas to pass through the venting pipe and enter the exhaust pipe for discharge, which is beneficial for the device to automatically depressurize when the gas pressure value is reached, thus increasing the service life of the device. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of a preferred embodiment of the present invention;

[0021] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0022] Figure 3 This is the utility model Figure 2 Enlarged structural diagram at point A;

[0023] Figure 4 This is the utility model Figure 2 Enlarged structural diagram at point B.

[0024] Explanation of reference numerals in the accompanying drawings: 1. Discharge pipe; 2. Vent shell; 3. Cyclone separator assembly; 4. Vent assembly; 5. Exhaust pipe; 31. Support frame; 32. Motor; 33. Rotating shaft; 34. Fan blade; 35. Scraper; 36. Discharge port; 37. Collection box; 38. Wire mesh; 41. Vent pipe; 42. Vent hole; 43. Push rod; 44. Feed cylinder; 45. Piston block; 46. Spring; 47. Buckle block. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings.

[0026] This specific embodiment is merely an explanation of the present utility model and is not intended to limit the present utility model. After reading this specification, those skilled in the art can make modifications to this embodiment without contributing any inventive step, but as long as they are within the scope of the claims of the present utility model, they are protected by patent law.

[0027] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0028] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0029] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0030] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] Example 1: Please refer to the appendix of the instruction manual. Figures 1 to 4 As shown, the emergency exhaust pipe flame arrestor cyclone separator for the secondary combustion chamber includes an exhaust pipe body 1, the exhaust end of which is connected to a vent shell 2, comprising:

[0032] Exhaust pipe 5, the exhaust pipe 5 is connected to the end of the vent housing 2 away from the exhaust pipe body 1;

[0033] Cyclone separation component 3 is disposed between the discharge pipe body 1 and the vent shell 2, and the cyclone separation component 3 is used to separate the gas into solid and gas in the gas entering the discharge pipe body 1 while dissipating heat through the slit.

[0034] Venting component 4 is disposed between venting shell 2 and exhaust pipe 5, and venting component 4 is used to discharge the gas in venting shell 2 when the gas pressure value is reached.

[0035] The cyclone separator assembly 3 includes a support frame 31 fixedly connected to the inner wall of the discharge pipe body 1. A motor 32 is fixedly installed at the end of the support frame 31 away from the discharge pipe body 1. A rotating shaft 33 is fixedly connected to the output end of the motor 32. A fan blade 34 is fixedly connected to the outer surface of the rotating shaft 33.

[0036] The cyclone separator 3 includes a metal wire mesh 38 fixedly connected to the inner wall of the discharge pipe 1, a scraper 35 fixedly connected to the end of the rotating shaft 33 away from the motor 32, a discharge port 36 opened on the discharge pipe 1, and a collection box 37 magnetically connected to the discharge port 36.

[0037] Additional notes: A cleaning brush is fixedly installed on the outer surface of the scraper 35, and the cleaning brush is in contact with the metal wire mesh 38;

[0038] The discharge port 36 is located between the scraper 35 and the wire mesh 38, and the inner wall of the discharge port 36 is bonded with magnetic blocks.

[0039] The above scheme is adopted: By using the cyclone separation component 3, the rotation of the rotating shaft 33 can make the fan blade 34 and scraper 35 rotate accordingly. The wind force generated by the rotation of the fan blade 34 can accelerate the gas into the vent shell 2. On the other hand, in conjunction with the metal wire mesh 38, it can block the solid particles contained in the gas, centrifugally throw away the solid particles, and make the solid particles fall into the collection box 37. The gas passes through the metal wire mesh 38 and enters the vent shell 2. The metal wire mesh 38 can dissipate heat through narrow slits, which is beneficial for the device to separate solid and gas, while increasing the fire resistance of the device.

[0040] Example 2: Please refer to the appendix of the instruction manual. Figure 2 and Figure 3 As shown, the venting assembly 4 includes a vent pipe 41 fixedly connected to the inner wall of the venting shell 2, a vent hole 42 is provided on the vent pipe 41, and a push rod 43 is slidably connected to the center of the vent pipe 41.

[0041] One end of the push rod 43 is fixedly connected to a piston block 45, and the other end of the push rod 43 is fixedly connected to a latching block 47;

[0042] The venting assembly 4 also includes a transfer cylinder 44 fixedly connected to the outer surface of the venting shell 2, and a spring 46 fixedly connected to the end of the piston block 45 away from the transfer cylinder 44.

[0043] Additional explanation: A clearance hole is provided on the vent pipe 41, and the diameter of the clearance hole is larger than the diameter of the push rod 43. The gap between the push rod 43 and the clearance hole is used for gas to enter.

[0044] One end of the spring 46 is fixed to the piston block 45, and the piston block 45 slides on the inner wall of the feed cylinder 44, while the other end of the spring 46 abuts against the vent shell 2.

[0045] The above solution allows gas to continuously enter the vent housing 2 via the venting component 4, allowing it to pass through the vent hole 42 into the vent pipe 41. As the air pressure inside the vent pipe 41 gradually increases, the compression spring 46 contracts, causing the latch block 47 to disengage from the blockage of the vent pipe 41. This allows the gas to pass through the vent pipe 41 into the exhaust pipe 5 for discharge, which helps the device to automatically release pressure when the air pressure value is reached, thus increasing the service life of the device.

[0046] Working principle and usage process of this utility model:

[0047] The operator first connects the inlet end of the exhaust pipe 1 to the exhaust gas discharged from the secondary combustion chamber. Then, the operator starts the motor 32, causing the rotating shaft 33 to rotate. This causes the fan blades 34 and scraper 35 to rotate as well. The wind force generated by the rotation of the fan blades 34 accelerates the gas towards the metal mesh 38. At the same time, the metal mesh 38 blocks the solid particles contained in the gas, centrifugally throwing away the solid particles. With the rotation of the scraper 35, the solid particles are thrown into the collection box 37, while the gas passes through the metal mesh 38 and enters the vent shell 2. If the flame spreads to the metal mesh 38, it is extinguished due to the heat dissipation of the slit and the heat absorption of the metal. Then, the gas after solid-gas separation enters the vent pipe 41 through the vent hole 42. As the gas pressure in the cavity of the vent pipe 41 gradually increases, the gas pushes the push rod 43 to move. The piston block 45 moves along with it, compressing the spring 46 to contract, and the latch block 47 disengages from the blockage of the vent pipe 41. At this time, the gas passes through the vent pipe 41 and enters the exhaust pipe 5 to be discharged.

[0048] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any way. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall fall within the scope of the technical solution of the present utility model.

Claims

1. A flame-arresting cyclone separator for emergency exhaust pipes in a secondary combustion chamber, comprising an exhaust pipe body (1), wherein the exhaust end of the exhaust pipe body (1) is connected to a vent shell (2), characterized in that, include: Exhaust pipe (5), the exhaust pipe (5) is connected to the end of the vent shell (2) away from the exhaust pipe body (1); Cyclone separation component (3), the cyclone separation component (3) is disposed between the discharge pipe body (1) and the vent shell (2), and the cyclone separation component (3) is used to separate the gas and solid in the gas entering the discharge pipe body (1) while dissipating heat through the slit; Venting assembly (4) is disposed between vent housing (2) and exhaust pipe (5), and venting assembly (4) is used to discharge the gas in vent housing (2) when the gas pressure value is reached.

2. The flame-arresting cyclone separator for the emergency discharge pipeline of the secondary combustion chamber according to claim 1, characterized in that, The cyclone separator assembly (3) includes a support frame (31) fixedly connected to the inner wall of the discharge pipe (1). A motor (32) is fixedly installed at one end of the support frame (31) away from the discharge pipe (1). A rotating shaft (33) is fixedly connected to the output end of the motor (32). A fan blade (34) is fixedly connected to the outer surface of the rotating shaft (33).

3. The flame-arresting cyclone separator for the emergency discharge pipeline of the secondary combustion chamber according to claim 2, characterized in that, The cyclone separation assembly (3) includes a metal wire mesh (38) fixedly connected to the inner wall of the discharge pipe (1), a scraper (35) fixedly connected to one end of the rotating shaft (33) away from the motor (32), a discharge port (36) is provided on the discharge pipe (1), and a collection box (37) is magnetically connected to the discharge port (36).

4. The flame-arresting cyclone separator for the emergency discharge pipeline of the secondary combustion chamber according to claim 1, characterized in that, The venting assembly (4) includes a vent pipe (41) fixedly connected to the inner wall of the vent housing (2), and a vent hole (42) is provided on the vent pipe (41). A push rod (43) is slidably connected to the center of the vent pipe (41).

5. The flame-arresting cyclone separator for the emergency discharge pipeline of the secondary combustion chamber according to claim 4, characterized in that, One end of the push rod (43) is fixedly connected to a piston block (45), and the other end of the push rod (43) is fixedly connected to a latching block (47).

6. The flame-arresting cyclone separator for the emergency discharge pipeline of the secondary combustion chamber according to claim 4, characterized in that, The venting assembly (4) also includes a transfer cylinder (44) fixedly connected to the outer surface of the venting shell (2), and a spring (46) is fixedly connected to one end of the piston block (45) away from the transfer cylinder (44).