One-way explosion-proof valve for dust removal pipeline
By designing a one-way explosion-proof valve for dust removal pipeline, the contact and pressure relief structure between the fixed disk and the pressure relief structure of the pressure, the problem that the valve disc is easy to break when the explosion is exploded is solved, and Improves the safety and service life of the device.
Patent Information
- Application Number
- CN202421335767.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-12
- Publication Date
- 2025-02-07
- Estimated Expiration
- 2034-06-12
AI Technical Summary
When the existing one-way explosion-proof valve explodes, the valve disc is susceptible to huge impact, resulting in breakage or bending at the connection between the valve disc and the rotating shaft. When the impact force is reduced by increasing the valve body volume, the device is inconvenient to install and pressure relief. Limited capability.
A one-way explosion-proof valve for dust removal pipes is designed, including explosion-proof pipes, fixed disks, pressure disks and pressure relief structures. Through the contact between the fixed disks and the pressure relief structures, it can effectively withstand and discharge the explosion caused by explosions. Pressure to avoid direct impact on the valve disc.
Effectively block the flame and high-pressure and high-temperature gas generated by the explosion, reduce the impact of the explosion on the device, improve the service life of the device, and improve the safety and pressure relief efficiency of the device through the design of the pressure relief structure.
Smart Images
Figure CN222437140U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of one-way explosion-proof valves, in particular to a one-way explosion-proof valve for a dust removal pipeline. Background Art
[0002] Pipeline explosion-proof valves are normally used on the inlet pipes of dust collectors or cyclone separators. They are simple, economical and reliable explosion-proof products, mainly used to prevent the flames and shock waves generated by the internal explosion of the equipment from being transmitted to the upstream pipes and equipment. During operation, the valve disc of the one-way explosion-proof valve is opened by the normal working airflow in the pipeline or is in a normally open state.
[0003] In the event of an explosion inside the protected equipment, the valve disc of the explosion-proof valve is closed by the impact of the shock wave.
[0004] In the prior art, a valve disc is provided inside the explosion-proof valve, and the valve disc is usually directly connected to the rotating shaft, so that when an explosion occurs, the valve disc is easily subjected to a huge impact, and the connection between the valve disc and the rotating shaft is easily broken or bent;
[0005] Moreover, most explosion-proof valves in the prior art reduce the impact force of the explosion on the pipeline by increasing the volume of the valve body. This method not only causes the volume of the explosion-proof valve to become larger, resulting in inconvenience in the installation of the explosion-proof valve, but also has limited pressure relief capacity. Utility Model Content
[0006] In view of the deficiencies in the prior art, the purpose of the utility model is to provide a one-way explosion-proof valve for a dust removal pipeline, so as to solve the technical problems mentioned in the above background technology.
[0007] The above technical objectives of the utility model are achieved through the following technical solutions:
[0008] A one-way explosion-proof valve for a dust removal pipeline comprises an explosion-proof pipe, a fixed plate, a pressure plate and a pressure relief structure, wherein both ends of the explosion-proof pipe are provided with connecting flanges;
[0009] The fixing plate is fixedly arranged at one end of the explosion-proof tube, and a through hole is provided at the axis of the fixing plate;
[0010] The pressure plate is slidably disposed inside the explosion-proof tube and is located on one side of the fixed plate close to the center of the explosion-proof tube. A plurality of ventilation slots are provided inside the pressure plate.
[0011] The pressure relief structure includes a first pressure relief disc, a second pressure relief disc and a third pressure relief disc, which are slidably arranged in sequence inside the explosion-proof pipe, and the third pressure relief disc is located on a side of the pressure disc away from the fixed disc.
[0012] Furthermore, the ventilation slot corresponds to a position of the fixed disk close to an outer edge, and a blocking block is provided at a position of the fixed disk corresponding to the ventilation slot.
[0013] Furthermore, two spring grooves are provided on the outer surfaces of the fixed plate, the pressure plate, the first pressure relief plate, the second pressure relief plate and the third pressure relief plate, and the interiors of two adjacent spring grooves are commonly connected with a split spring.
[0014] Furthermore, a first pressure relief groove is provided at the center of the first pressure relief disk. The first pressure relief groove is composed of a gathering groove and a reverse thrust groove which are interconnected. The gathering groove and the reverse thrust groove are respectively provided on both sides of the first pressure relief disk.
[0015] Furthermore, a second pressure relief groove is provided at the center of the second pressure relief disk, and the second pressure relief groove is arranged in a flared shape.
[0016] Furthermore, a third pressure relief groove is provided at the center of the third pressure relief disc, and the third pressure relief groove is a conical leak-shaped arrangement.
[0017] Furthermore, an extension connecting rod is provided on a side of the pressure plate away from the fixed plate, one end of the extension connecting rod extends to one end of the first pressure relief groove and is fixedly connected to a pressure panel.
[0018] In summary, the utility model includes at least one of the following beneficial technical effects:
[0019] 1. The one-way explosion-proof valve for dust removal pipeline, the pressure generated during the explosion will gather on one side of the pressure plate, and push the pressure plate to contact the fixed plate, at this time the fixed plate and the pressure plate are closed to each other, the plate surface of the fixed plate blocks the ventilation slot, so that the air cannot enter the through hole after entering the ventilation slot, thereby achieving the effect of blocking the flame and high-pressure and high-temperature gas generated by the explosion. Compared with the valve disc and the rotating shaft in the prior art, the pressure generated by the explosion is borne by the pressure plate and the fixed plate, so as to reduce the impact of the explosion on the device and improve the service life of the device;
[0020] 2. This one-way explosion-proof valve for dust removal pipe, when receiving the impact force generated by the explosion, the high-pressure gas pushes the first pressure relief disc, the second pressure relief disc and the third pressure relief disc to move, and compresses the split spring to reduce the energy of the high-pressure gas, thereby achieving the purpose of pressure relief, further improving the safety of the device, and service life. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.
[0022] Figure 1 The utility model is a structural schematic diagram of a one-way explosion-proof valve for a dust removal pipeline.
[0023] Figure 2 The utility model is a schematic diagram of the internal structure of an explosion-proof pipe of a one-way explosion-proof valve for a dust removal pipeline.
[0024] Figure 3 The internal structure of the explosion-proof pipe of the one-way explosion-proof valve for dust removal pipeline of the utility model is shown in FIG. Figure 2 .
[0025] Figure 4 The utility model is a structural schematic diagram of a pressure relief mechanism of a one-way explosion-proof valve for a dust removal pipeline.
[0026] Figure 5 The utility model is a structural schematic diagram of explosion air flow of a one-way explosion-proof valve for a dust removal pipeline.
[0027] In the figure, 1. explosion-proof pipe; 2. fixed plate; 3. pressure plate; 4. pressure relief structure; 5. connecting flange; 6. through hole; 7. ventilation slot; 8. first pressure relief plate; 9. second pressure relief plate; 10. third pressure relief plate; 11. blocking block; 12. spring slot; 13. split spring; 14. first pressure relief slot; 15. gathering slot; 16. reverse thrust slot; 17. second pressure relief slot; 18. third pressure relief slot; 19. extension connecting rod; 20. pressure panel. DETAILED DESCRIPTION
[0028] The utility model is further described in detail below in conjunction with the accompanying drawings.
[0029] Example:
[0030] Reference Figure 1-Figure 5 The utility model discloses a one-way explosion-proof valve for a dust removal pipeline, comprising an explosion-proof pipe 1, a fixed plate 2, a pressure plate 3 and a pressure relief structure 4, and both ends of the explosion-proof pipe 1 are provided with connecting flanges 5;
[0031] The fixing plate 2 is fixedly arranged at one end of the explosion-proof tube 1, and a through hole 6 is provided at the axis of the fixing plate 2;
[0032] The pressure plate 3 is slidably disposed inside the explosion-proof tube 1 and is located on one side of the fixed plate 2 close to the center of the explosion-proof tube 1. A plurality of ventilation slots 7 are provided inside the pressure plate 3.
[0033] The pressure relief structure 4 includes a first pressure relief disk 8, a second pressure relief disk 9 and a third pressure relief disk 10, and the first pressure relief disk 8, the second pressure relief disk 9 and the third pressure relief disk 10 are slidably arranged in sequence inside the explosion-proof pipe 1, and the third pressure relief disk 10 is located on the side of the pressure disk 3 away from the fixed disk 2.
[0034] In this embodiment, the explosion-proof pipe 1 is installed inside the dust removal pipe through the connecting flange 5;
[0035] By setting the fixed plate 2 and the pressure plate 3, air enters the interior of the explosion-proof pipe 1 through the through hole 6 and passes through the pressure plate 3 through the ventilation slot 7, so that the air can carry dust through the explosion-proof pipe 1;
[0036] When dust explodes in the dust removal duct, the pressure generated by the explosion pushes the first pressure relief disc 8, the second pressure relief disc 9 and the third pressure relief disc 10 to move, thereby achieving the purpose of pressure relief;
[0037] The pressure generated during the explosion will gather on one side of the pressure plate 3 and push the pressure plate 3 to contact the fixed plate 2. At this time, the fixed plate 2 and the pressure plate 3 are closed to each other, and the plate surface of the fixed plate 2 blocks the ventilation slot 7, so that the air cannot enter the through hole 6 after entering the ventilation slot 7, thereby achieving the effect of blocking the flame generated by the explosion and the high-pressure and high-temperature gas.
[0038] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the ventilation slot 7 corresponds to a position of the fixed disk 2 close to the outer edge, and a blocking block 11 is provided at a position of the fixed disk 2 corresponding to the ventilation slot 7 .
[0039] In the present embodiment, since the notch of the ventilation groove 7 corresponds to the position of the fixed plate 2 close to the outer edge, after the fixed plate 2 and the pressure plate 3 come into contact, the ventilation groove 7 can be effectively closed by the fixed plate 2. By setting the sealing block 11, after the pressure plate 3 and the fixed plate 2 come into contact, the ventilation groove 7 can be sealed, so as to improve the sealing performance of the ventilation groove 7 and avoid the problem of air leakage.
[0040] In a further preferred embodiment of the present invention, Figure 1-5 As shown, the outer surfaces of the fixed plate 2, the pressure plate 3, the first pressure relief plate 8, the second pressure relief plate 9 and the third pressure relief plate 10 are each provided with two spring grooves 12, and the interiors of two adjacent spring grooves 12 are commonly connected with a split spring 13.
[0041] In this embodiment, the spring groove 12 is provided to accommodate the spring, so that the fixed plate 2, the pressure plate 3, the first pressure relief plate 8, the second pressure relief plate 9 and the third pressure relief plate 10 can effectively connect the adjacent plates with each other when subjected to the impact force generated by the explosion, so that the high pressure generated by the explosion can push each plate to move to achieve the purpose of pressure relief.
[0042] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a first pressure relief groove 14 is opened at the center of the first pressure relief disk 8. The first pressure relief groove 14 is composed of a gathering groove 15 and a reverse thrust groove 16 which are interconnected. The gathering groove 15 and the reverse thrust groove 16 are respectively opened on both sides of the first pressure relief disk 8.
[0043] In this embodiment, Figure 5 , the black triangular arrow represents the trajectory of the gas flow generated by the explosion. When the high-pressure air generated by the explosion enters the interior of the gathering groove 15, it first pushes the first pressure relief disc 8 close to the second pressure relief disc 9, and the high-pressure air enters the gathering groove 15, and is discharged into the second pressure relief groove 17 through the reverse thrust groove 16. Due to the obstruction of the second pressure relief disc 9, part of the high-pressure air is used to push the second pressure relief disc 9 to move, and the other part of the high-pressure air passes through the second pressure relief disc 9. When the high-pressure gas pushes the second pressure relief disc 9 to move, this part of the high-pressure gas is subjected to the reaction force of the split spring 13, causing the high-pressure gas to rebound and contact the groove wall of the reverse thrust groove 16. Since the groove wall of the reverse thrust groove 16 is an arc surface, the high-pressure gas will apply pressure to both sides of the first pressure relief disc 8 at the same time, thereby achieving the effect of initial pressure relief.
[0044] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a second pressure relief groove 17 is provided at the center of the second pressure relief disk 9, and the second pressure relief groove 17 is in a flared shape.
[0045] In this embodiment, when the high-pressure gas passes through the second pressure relief disk 9 through the second pressure relief groove 17, it contacts the third pressure relief disk 10. At this time, when the high-pressure gas passes through the third pressure relief groove 18, part of the high-pressure gas will be transferred again and directed to the second pressure relief disk 9 to apply pressure to the second pressure relief disk 9, thereby achieving the purpose of further pressure relief.
[0046] In a further preferred embodiment of the present invention, Figure 1-5 As shown, a third pressure relief groove 18 is opened at the center of the third pressure relief disc 10, and the third pressure relief groove 18 is a conical leak-shaped arrangement.
[0047] In this embodiment, Figure 5, the black triangle arrow represents the trajectory of the gas flow generated by the explosion. Finally, when the high-pressure gas passes through the third pressure relief groove 18, since the pressure plate 3 and the fixed plate 2 are in contact with each other at this time, this part of the reduced high-pressure gas will be retained between the third pressure relief groove 18 and the pressure plate 3, and push the third pressure relief groove 18 to achieve the purpose of three pressure reliefs.
[0048] In a further preferred embodiment of the present invention, Figure 1-5 As shown, an extension connecting rod 19 is provided on one side of the pressure plate 3 away from the fixed plate 2 , one end of the extension connecting rod 19 extends to one end of the first pressure relief groove 14 and is fixedly connected to a pressure panel 20 .
[0049] In this embodiment, through the arrangement of the pressure panel 20 and the extension connecting rod 19, when the pressure generated by the explosion enters the interior of the explosion-proof tube 1, it will first push the pressure plate 3 to contact the fixed plate 2, thereby preventing the leakage of high-pressure gas and flame generated by the explosion.
[0050] The embodiments of this specific implementation method are all preferred embodiments of the utility model, and are not intended to limit the protection scope of the utility model. Therefore, all equivalent changes made based on the structure, shape, and principle of the utility model should be included in the protection scope of the utility model.
Claims
1. A one-way explosion-proof valve for a dust removal pipeline, characterized in that: It comprises an explosion-proof pipe (1), a fixing plate (2), a pressure plate (3) and a pressure relief structure (4), wherein both ends of the explosion-proof pipe (1) are provided with connecting flanges (5); The fixing plate (2) is fixedly arranged at one end inside the explosion-proof tube (1), and a through hole (6) is provided at the axis center of the fixing plate (2); The pressure plate (3) is slidably arranged inside the explosion-proof tube (1) and is located on one side of the fixed plate (2) close to the center of the explosion-proof tube (1). A plurality of ventilation slots (7) are provided inside the pressure plate (3); The pressure relief structure (4) comprises a first pressure relief disc (8), a second pressure relief disc (9) and a third pressure relief disc (10), wherein the first pressure relief disc (8), the second pressure relief disc (9) and the third pressure relief disc (10) are slidably arranged in sequence inside the explosion-proof pipe (1), and the third pressure relief disc (10) is located on a side of the pressure disc (3) away from the fixed disc (2).
2. A one-way explosion-proof valve for dust removal pipeline according to claim 1, characterized in that: The ventilation slot (7) corresponds to a position of the fixed disk (2) close to the outer edge, and a blocking block (11) is provided at a position of the fixed disk (2) corresponding to the ventilation slot (7).
3. A one-way explosion-proof valve for dust removal pipeline according to claim 2, characterized in that: The outer surfaces of the fixed plate (2), the pressure plate (3), the first pressure relief plate (8), the second pressure relief plate (9) and the third pressure relief plate (10) are each provided with two spring grooves (12), and the interiors of two adjacent spring grooves (12) are commonly connected with a split spring (13).
4. A one-way explosion-proof valve for dust removal pipeline according to claim 3, characterized in that: A first pressure relief groove (14) is provided at the center of the first pressure relief disc (8), the first pressure relief groove (14) being composed of a gathering groove (15) and a reverse thrust groove (16) which are interconnected, the gathering groove (15) and the reverse thrust groove (16) being respectively provided on two sides of the first pressure relief disc (8).
5. A one-way explosion-proof valve for dust removal pipeline according to claim 4, characterized in that: A second pressure relief groove (17) is provided at the center of the second pressure relief disc (9), and the second pressure relief groove (17) is arranged in a flared shape.
6. A one-way explosion-proof valve for dust removal pipeline according to claim 5, characterized in that: A third pressure relief groove (18) is provided at the center of the third pressure relief disc (10), and the third pressure relief groove (18) is arranged in a conical leak-shaped manner.
7. A one-way explosion-proof valve for a dust removal pipeline according to claim 6, characterized in that: An extension connecting rod (19) is provided on a side of the pressure plate (3) away from the fixed plate (2), one end of the extension connecting rod (19) extends to one end of the first pressure relief groove (14) and is fixedly connected to a pressure panel (20).