Dust explosion-proof device
By designing a combined structure of front and rear explosion-proof components, and using a transmission rod and cover to adjust the dust explosion-proof device, the risk of explosion caused by dust accumulation was solved, and the explosion source was sealed and the explosion rate was reduced.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- WEIHAI AILIDE NEW MATERIAL CO LTD
- Filing Date
- 2025-05-09
- Publication Date
- 2026-04-10
AI Technical Summary
Existing dust explosion prevention devices, when the dust content is high or the gas flow rate is low, can easily cause dust accumulation when the passage opening is fully opened, increasing the risk of explosion.
Design a dust explosion prevention device that uses a combination of front and rear explosion-proof components, along with mechanical adjustment of a transmission rod and a cover, to control dust content and airflow speed, reduce the risk of explosion, and seal off the explosion source in the event of an explosion.
It achieves the ability to seal the explosion source during an explosion, reducing the possibility of the explosion spreading, while simultaneously reducing the explosion rate by mechanically controlling dust content and airflow speed.
Smart Images
Figure CN224107726U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to an explosion -proof device technical field especially relates to a dust explosion -proof device. BACKGROUND
[0002] In the production process of building materials, raw materials need to be crushed, and the dust generated by crushing is usually discharged into the tail gas treatment device or a specific device through a pipeline. However, the dust is transported in the pipeline, and once it encounters an open flame or high temperature, it is easy to explode, so a dust explosion -proof device needs to be designed.
[0003] The existing dust explosion -proof device controls the dust into the device through the valve plate, but the valve plate of the existing device only has two states of complete opening and complete closing. When the dust content is high or the gas flow rate is low, the channel opening is easy to cause dust accumulation and increase the explosion rate.
[0004] Therefore, a dust explosion -proof device is proposed to solve the above problems. UTILITY MODEL CONTENT
[0005] In view of the problem that the valve plate of the existing device only has two states of complete opening and complete closing, when the dust content is high or the gas flow rate is low, the channel opening is easy to cause dust accumulation and increase the explosion rate, the utility model is proposed.
[0006] To solve the above technical problems, the utility model provides the following technical scheme: a dust explosion -proof device, which comprises a pipeline and a device body arranged between the pipelines, characterized in that: the device body comprises a front explosion -proof part and a rear explosion -proof part; the front explosion -proof part comprises a cover, a primary transmission rod, a secondary transmission rod, a tertiary transmission rod, a fixed rod and a driving rod, the cover is vertically movably arranged in the front explosion -proof part, the primary transmission rod is hingedly connected to the upper part of the cover, the fixed rod penetrates the transmission rod and is arranged in the front explosion -proof part, one end of the secondary transmission rod is hingedly connected to the primary transmission rod, the other end of the secondary transmission rod is hingedly connected with the tertiary transmission rod, the secondary transmission rod is vertically slidably arranged in the device body, the driving rod is hingedly connected to the front explosion -proof part, and the other end of the driving rod is hingedly connected with the tertiary transmission rod.
[0007] Preferably, the device body comprises a primary inlet, a secondary inlet and an outlet, the front explosion -proof part is located between the rear side of the primary inlet and the secondary inlet, and the cover area is larger than the primary inlet to completely block the primary inlet when closed.
[0008] Preferably, the rear explosion -proof part comprises a plug, a guide column and a spring, the guide column is fixedly arranged on the rear side of the plug, the spring is arranged between the plug and the rear explosion -proof part, and the inner diameter of the rear explosion -proof part is larger than the diameters of the plug and the spring.
[0009] Preferably, the plug shape is a cylinder with a cut corner in the front part, and the inner wall of the rear explosion-proof member on the rear side of the secondary inlet is an upwardly inclined slope with the same angle as the plug.
[0010] Preferably, the outlet diameter is smaller than the spring diameter.
[0011] The present application has the following beneficial effects:
[0012] 1. By setting the front and rear explosion-proof members, the explosion source is enclosed in the device body when an explosion occurs, avoiding further expansion of the explosion.
[0013] 2. By setting the front explosion-proof member including the cover, the primary transmission rod, the secondary transmission rod, the tertiary transmission rod, the fixed rod and the driving rod, the size of the primary inlet is adjusted, and the dust content and airflow speed entering the device body are adjusted, thereby reducing the explosion rate. The dust enters the device body through the primary inlet, drives the driving rod to rotate upward, the driving rod drives the tertiary transmission rod to rotate, and in turn drives the secondary transmission rod to move vertically downward, the secondary transmission rod drives the cover to rise around the fixed rod, changes the size of the primary inlet, and thereby changes the dust content and airflow rate entering the device body; the faster the dust rate of the front pipeline, the larger the primary inlet, and the gas flow rate entering the device body.
[0014] 3. The internal structure of the device is all mechanical components, without electrical components, further reducing the probability of triggering an explosion. BRIEF DESCRIPTION OF DRAWINGS
[0015] In order to more clearly illustrate the technical scheme of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor. Among them:
[0016] Figure 1 It is a structural schematic diagram of the present application.
[0017] Figure 2 It is a structural schematic diagram of the device body of the present application.
[0018] Figure 3 It is a schematic diagram of the front explosion-proof member of the present application.
[0019] Figure 4 It is a schematic diagram of the internal structure of the front explosion-proof member of the present application.
[0020] Figure 5 It is a sectional view of the rear explosion-proof member of the present application.
[0021] Figure 6The utility model discloses a device body front view cross section schematic view.
[0022] Mark explanation:
[0023] 1, pipeline;2, device body;21, front explosion -proof spare;211, cover;212, primary transmission rod;213, secondary transmission rod;214, tertiary transmission rod;215, fixed rod;216, drive rod;22, rear explosion -proof spare;221, plug block;222, guide column;223, spring;23, primary import;24, secondary import;25, export. Specific implementation
[0024] In order to make the above -mentioned purpose, feature and advantage of the utility model can be more obvious easy to understand, below combining with the specific implementation of the utility model detailed description of the specific embodiment of the utility model.
[0025] Refer to Figures 1 to 6 For the utility model one embodiment, provide a kind of dust explosion -proof device, this dust explosion -proof device includes pipeline 1 and is set to between pipeline 1 device body 2, device body 2 includes front explosion -proof spare 21 and rear explosion -proof spare 22;Front explosion -proof spare 21 includes cover 211, primary transmission rod 212, secondary transmission rod 213, tertiary transmission rod 214, fixed rod 215 and drive rod 216, front explosion -proof spare 21 is provided with cavity, cover 211 is vertically set in the cavity of front explosion -proof spare 21, primary transmission rod 212 is hinged in the upper portion of cover 211, fixed rod 215 is set in front explosion -proof spare 21, and transmission rod 212 is set in front explosion -proof spare 21, secondary transmission rod 213 is hinged on primary transmission rod 212, and the other end of secondary transmission rod 213 is hinged with tertiary transmission rod 214, secondary transmission rod 213 is vertically slidably arranged in device body 2, drive rod 216 is hinged on front explosion -proof spare 21, and the other end of drive rod 216 is hinged with tertiary transmission rod 214.
[0026] Specifically, device body 2 includes front explosion -proof spare 21 and rear explosion -proof spare 22. Device body 2 is equipped with primary import 23, secondary import 24 and export 25, it is noted that, from primary inlet to export 25 direction is from front to back, primary export 25 is front, and export 25 is rear.
[0027] Specifically, the front explosion-proof member 21 includes a cover 211, a first transmission rod 212, a second transmission rod 213, a third transmission rod 214, a fixed rod 215 and a driving rod 216. The cover 211 is vertically arranged in the front explosion-proof member 21, the first transmission rod 212 is hinged to the upper part of the cover 211, and a part of the first transmission rod 212 is located in the front explosion-proof member 21 and the other part is located outside the front explosion-proof member 21. An opening is arranged on the front explosion-proof member 21 for the first transmission rod 212 to pass through, and the vertical height of the opening is greater than the vertical thickness of the first transmission rod 212 to ensure that the first transmission rod 212 has enough rotating space. The fixed rod 215 is fixedly arranged in the opening and penetrates the front and back of the first transmission rod 212, so that the first transmission rod 212 rotates up and down on the opening around the fixed rod 215. One end of the second transmission rod 213 is hinged to the part of the first transmission rod 212 located outside the front explosion-proof member 21, and the second transmission rod 213 moves vertically in the device body 2. In some embodiments, a fixed tube is vertically arranged at the top in the device body 2, and the second transmission rod 213 is partially located in the fixed tube. The other end of the second transmission rod 213 is hinged to the third transmission rod 214, and the driving rod 216 is hinged to the front explosion-proof member 21. The other end of the driving rod 216 is hinged to the third transmission rod 214.
[0028] It can be understood that the dust enters the device body 2 through the first inlet 23, pushes the driving rod 216 to rotate upward, the driving rod 216 drives the third transmission rod 215 to rotate, the third transmission rod 214 drives the second transmission rod 213 to move vertically downward, and the second transmission rod 213 drives the first transmission rod 212 to rotate upward around the fixed rod 215, so that the cover 211 is raised, and then the size of the first inlet 23 is changed, so that the dust content entering the device body and the gas flow rate can be changed. It can be understood that the larger the opening, the greater the air pressure, the greater the gas flow rate, and the more dispersed the dust in the gas, which is less likely to accumulate. Conversely, the smaller the opening, the smaller the air pressure, the smaller the gas flow rate, and the more concentrated the dust in the gas, which is more likely to accumulate. The faster the dust rate in the front pipeline 1, the larger the first inlet 23, and the faster the dust rate entering the device body 2. Moreover, the driving rod 216 can not only control the opening degree of the cover 211, but also can shunt the wind power through the first inlet 23, reduce the pressure, and then reduce the explosion rate.
[0029] It is worth noting that all components in the device body are explosion-proof materials, and the cover 211 and the driving rod 216 are balanced by the weight of the components. The normal balance state is that the cover 211 partially shields the first inlet 23, and the driving rod 216 forms a certain angle with the side wall of the front explosion-proof member 21. A fan is usually arranged in the pipeline 1 to assist in exhaust, which can also improve the gas flow rate in the pipeline.
[0030] Specifically, the rear explosion-proof member 22 comprises a plug 221, a guide column 222 and a spring 223. The guide column 222 is fixedly arranged at the rear of the plug 221, the spring 223 is arranged between the plug 221 and the rear explosion-proof member 22, and the inner diameter of the rear explosion-proof member 22 is greater than the maximum diameter of the plug 221 and the spring 223. Preferably, the plug 221 is in the shape of a cylinder with a cut corner at the front part, the inner wall of the rear explosion-proof member 22 at the rear side of the secondary inlet 24 is an upwardly inclined slope, and the inclination angle is the same as that of the plug 221 to ensure that the plug 221 completely adheres to the inner wall of the rear explosion-proof member in the normal state. The diameter of the outlet 25 is smaller than that of the spring 223, so as to ensure that the spring 223 and the plug 221 cannot be separated from the rear explosion-proof member 22.
[0031] It can be understood that the wind force enters the rear explosion-proof member 22 from the secondary inlet 24, pushes the plug 221 backward, and the spring 223 is compressed. The wind force enters the rear explosion-proof member 22 from the upper and lower sides of the plug 221 and then flows out from the outlet 25.
[0032] Working principle: the wind force carrying dust enters the device body 2 from the primary inlet 23, pushes the driving rod 216 backward, and drives the cover 211 to be lifted through the transmission of a plurality of transmission rods. The greater the wind force, the greater the opening degree of the cover 211, and the greater the gas flow rate entering the device body 2. Conversely, the smaller the wind force, the smaller the opening angle of the cover 211, and the smaller the wind rate entering the device body 2. Then the wind force pushes the plug 221 backward through the secondary inlet 24, and the wind force enters the rear explosion-proof member 22 from the upper and lower sides of the plug 221, and finally flows out from the outlet 25.
[0033] When an explosion occurs in the device body 2, the impact force will burst to the front and rear sides. The front part pushes the driving rod 216 to the primary inlet 23, and the cover 211 closes the primary inlet 23. The plug 221 in the rear explosion-proof member 22 moves to the outlet 25, blocks the outlet 25, and limits the explosion in the device body 2.
[0034] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limited. Although the present application has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, and they should be covered in the scope of the claims of the present application.
Claims
1. A dust explosion prevention device comprising a duct (1) and a device body (2) disposed between the duct (1), characterized in that: The device body (2) comprises a front explosion-proof member (21) and a rear explosion-proof member (22); the front explosion-proof member (21) comprises a cover (211), a first-stage transmission rod (212), a second-stage transmission rod (213), a third-stage transmission rod (214), a fixing rod (215) and a driving rod (216), the cover is vertically arranged in the front explosion-proof member (21), the first-stage transmission rod (212) is hingedly connected to an upper part of the cover, the fixing rod is arranged in the front explosion-proof member (21) through the first-stage transmission rod (212), one end of the second-stage transmission rod (213) is hingedly connected to the first-stage transmission rod (212), the other end of the second-stage transmission rod (213) is hingedly connected to the third-stage transmission rod (214), the second-stage transmission rod (213) is vertically and slidingly arranged in the device body (2), the driving rod (216) is hingedly connected to the front explosion-proof member (21), and the other end of the driving rod (216) is hingedly connected to the third-stage transmission rod (214).
2. A dust explosion suppression apparatus according to claim 1, wherein: The device body (2) comprises a first-stage inlet (23), a second-stage inlet (24) and an outlet (25), the front explosion-proof member (21) is located between the rear side of the first-stage inlet (23) and the second-stage inlet (24), and the area of the cover (211) is greater than that of the first-stage inlet (23) so as to completely block the first-stage inlet (23) when being closed.
3. A dust explosion suppression apparatus according to claim 1, wherein: The rear explosion-proof member (22) comprises a plug (221), a guide column (222) and a spring (223), the guide column (222) is fixedly arranged on the rear side of the plug (221), and the spring (223) is arranged between the plug (221) and the rear explosion-proof member (22), and the inner diameter of the rear explosion-proof member (22) is greater than the diameters of the plug (221) and the spring (223).
4. A dust explosion suppression apparatus according to claim 2, wherein: The plug (221) is in the shape of a cylindrical body with a cut corner at the front part, the inner wall of the rear explosion-proof member (22) at the rear side of the second-stage inlet (24) is an upwardly inclined inclined surface, and the inclination angle is the same as that of the plug (221).
5. A dust explosion suppression apparatus according to claim 3, wherein: The diameter of the outlet (25) is smaller than that of the spring (223).