A distributed explosion relief bolt

Abstract

The invention discloses a distributed explosion-proof bolt, comprising an annular shell, a distributed pressure gasket and a positioning screw. The distributed pressure gasket is arranged inside the annular shell. There are multiple distributed pressure gaskets and they are evenly distributed around the axis of the annular shell in the front-to-back direction. The front end of each distributed pressure gasket is folded backward. An annular groove with an opening facing backward is arranged inside the front end of the annular shell. The front folded part of the distributed pressure gasket goes deep into the annular groove. The positioning screw passes through the annular shell horizontally backward. The positioning screw is close to the axis of the annular shell under the pressure of the folded part of the distributed pressure gasket. The front end of the annular shell is open and is provided with an environmental pollution protection cover. In short, the invention has the advantages of being able to adjust the explosion-proof pressure value in time, having a long service life, not being easily polluted, being easy to install, and accessories not being easily damaged during installation and use.

Description

Technical Field

[0001] The invention belongs to the technical field of explosion and pressure relief for building safety, is used for supporting explosion relief carriers that need to be provided with building explosion and pressure relief facilities, and particularly relates to a distributed explosion relief bolt. Background Art

[0002] In recent years, strict explosion-proof and explosion-proof standards have been implemented in factories, boiler rooms, hazardous goods warehouses and other places where there is a risk of explosion. Through the setting of explosion-proof doors, explosion-proof walls, explosion-proof roofs, etc., the indoor pressure can be promptly released to the outdoors in the event of an explosion, thereby preventing major casualties and property losses. Explosion-proof bolts are devices that connect walls, roofs or windows to rooting fixtures, which can ensure the connection between explosion-proof walls, explosion-proof roofs and other walls and doors and door frames under normal conditions. At the same time, when an explosion occurs, the connection can be disconnected under the impact of pressure, thereby dissipating the explosion shock wave through the opened pressure relief port or open window. At present, the existing explosion-proof bolts are mainly composed of screws, elastic gaskets and metal gaskets. Under high pressure, the metal gaskets and elastic gaskets will automatically warp and deform together, thereby forming a pressure relief port by disconnecting the connection. However, these explosion-proof bolts have many inconveniences. First, different types of metal gaskets are required for different screws, which has high production costs. Moreover, these metal gaskets are relatively small and are very easy to lose during carrying. Moreover, during installation, a slight tightening of the screws can cause damage to the metal gaskets, thereby making the gaskets ineffective and requiring re-purchase and replacement, resulting in a large amount of waste and delays in construction. On the other hand, when the working conditions or design parameters of the building change and the explosion-proof pressure value needs to be adjusted accordingly, the current explosion-proof bolts can only be dismantled and reinstalled, and timely and efficient adjustment cannot be achieved. Finally, during long-term use, the existing explosion-proof bolts are often exposed and are susceptible to environmental pollution and acid-base corrosion, which affects the normal use of the explosion-proof bolts, thereby affecting the explosion-proof ability and safety performance of the explosion-proof bolts when an explosion occurs. Summary of the invention

[0003] The purpose of the present invention is to provide a distributed explosion-proof bolt to solve the problem that the explosion-proof pressure value of the existing explosion-proof bolt is fixed and cannot be matched and adjusted by a single explosion-proof bolt, and the existing explosion-proof bolt must be dismantled and replaced with a new system when the explosion-proof pressure value is adjusted. At the same time, it also solves the technical problems that the existing explosion-proof bolts are inconvenient to install, are easily damaged during installation, are easily contaminated and corroded during use, and have accessories easily lost.

[0004] The technical solution adopted by the present invention is as follows:

[0005] A distributed explosion-proof bolt is arranged on an explosion-proof carrier, including an annular shell, a distributed pressure gasket and a positioning screw. The existing explosion-proof carrier mainly includes an explosion-proof door, an explosion-proof wall and an explosion-proof roof. The distributed explosion-proof bolt used in the present invention can be used on the corresponding explosion-proof door, explosion-proof wall and explosion-proof roof. The upper part of the explosion-proof carrier is provided with a rooting fixing device and an explosion-proof panel that folds backward and opens. The upper end of the explosion-proof panel is rotatably connected to the rooting fixing device. The annular shell is a circular sleeve and passes through the rooting fixing device horizontally backward. The outer side wall of the annular shell is fixedly connected to the inside of the rooting fixing device. The distributed pressure gasket is arranged inside the annular shell. The distributed pressure gasket is multiple and evenly distributed around the axis of the annular shell in the front-to-back direction. Each distributed pressure gasket The front ends of the sheets are all folded backwards, and the folding direction of each distributed pressure gasket is toward the center of the annular shell. An annular groove opening backwards is arranged inside the front end of the annular shell, and the outer ring of the annular groove is connected to the inner wall of the front end of the annular shell. The opening direction of the annular groove extends backwards in an inclined direction toward the center of the annular shell. The front folded part of the distributed pressure gasket penetrates into the annular groove, and the positioning screw passes through the annular shell horizontally backwards. Under the extrusion of the folded part of the distributed pressure gasket, the positioning screw approaches the axial direction of the annular shell, and the rear end of the positioning screw passes through the rooting fixing device and is fixedly connected to the bottom of the explosion-proof panel. The front end of the annular shell is open and is provided with an environmental pollution protection cover, which is spirally connected to the front end of the annular shell.

[0006] Furthermore, the positioning screw includes a nail cover and a nail body. The nail cover presses the distributed pressure gasket horizontally backward, thereby connecting the positioning screw and the annular shell through the distributed pressure gasket, and the nail body extends horizontally backward along the gaps between multiple distributed pressure gaskets and penetrates into the explosion-proof panel.

[0007] Furthermore, the diameter of the annular groove is greater than twice the thickness of the distributed pressure gasket, and the front end of the distributed pressure gasket squeezes the inner wall of the annular groove under the action of elastic force.

[0008] Furthermore, an outer wall of the annular shell is provided with an outer thread matching the inner thread on the inner wall of the environmental pollution protection cover, and the front-to-back length of the environmental pollution protection cover is greater than the distance between the front end of the annular shell and the rooting fixing device.

[0009] Furthermore, the annular groove is formed by bending the front end of the annular shell toward the center of the annular shell, and the annular groove and the annular shell are integrally formed during the production process.

[0010] Furthermore, the rear end diameter of the annular shell is smaller than the front end of the annular shell, the rear end of the annular shell penetrates into the rooting fixture, and the diameter of the positioning screw is smaller than the difference between the rear end diameter of the annular shell and twice the thickness of the distributed pressure gasket.

[0011] Furthermore, the distributed pressure gasket is made of an aluminum alloy sheet with relatively strong elasticity, and the outer end of the annular shell is made of stainless steel.

[0012] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0013] In the present invention, the original arc pressure plate is replaced by the connection mode of distributed pressure gasket and positioning screw for fixing, which can prevent the arc pressure plate from being damaged during the installation process. During normal use, the positioning screw ensures the connection between the rooting fixing device and the explosion relief panel under the squeezing of the distributed pressure gasket, thereby ensuring the normal use of the explosion relief carrier. When an explosion occurs, the positioning screw squeezes the distributed pressure gasket under the drive of the explosion relief panel, passes through the gap between multiple distributed pressure gaskets, and thus detaches from the annular shell, so that the connection between the explosion relief panel and the rooting fixing device is disconnected. The pressure is relieved by opening the opening between the explosion relief panel and the rooting fixing device formed by the explosion relief panel. After completion, the explosion relief bolt can be reinstalled and continued to be used. The annular groove and the annular shell are integrally formed and the distributed pressure gasket is folded and arranged in the annular shell, which reduces the production cost and increases the production efficiency. The corresponding accessories are not easy to be lost. The environmental pollution protection cover can protect the distributed pressure gasket and the positioning screw while increasing the appearance, thereby preventing rust and pollution by grease and dust, and increasing the service life of the distributed explosion relief bolt. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a structural schematic diagram of the present invention;

[0015] Figure 2 It is a connection diagram of the distributed pressure gasket and the positioning screw;

[0016] Figure 3 It is a schematic diagram of the connection between the distributed pressure gasket and the annular groove;

[0017] Figure 4 It is a schematic diagram of the connection between the distributed pressure gasket and the nail body.

[0018] Markings in the figure: 1-annular shell, 2-distributed pressure gasket, 3-positioning screw, 4-rooting fixing device, 5-explosion-proof panel, 6-annular groove, 7-nail cover, 8-nail body, 9-environmental pollution protection cover, 10-explosion-proof glass. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0020] Example 1

[0021] A distributed explosion-proof bolt is arranged on an explosion-proof carrier, including an annular shell 1, a distributed pressure gasket 2 and a positioning screw 3. The upper part of the explosion-proof carrier is provided with a rooting fixing device 4 and an explosion-proof panel 5 that is folded back and opened. The rooting fixing device 4 in this embodiment adopts an A-type explosion-proof window frame, and the explosion-proof panel 5 adopts an A-type explosion-proof window plate. The specific structures of the A-type explosion-proof window frame and the A-type explosion-proof window plate are both prior arts, and no further introduction is made here. The upper end of the explosion-proof panel 5 is rotatably connected to the rooting fixing device 4, and the explosion-proof panel 5 can be opened outwardly. The annular shell 1 is a circular sleeve and is horizontally penetrated backward. Through the rooting fixing device 4, the outer wall of the annular shell 1 is fixedly connected to the inside of the rooting fixing device 4, and the distributed pressure gasket 2 is arranged inside the annular shell 1. There are multiple distributed pressure gaskets 2 and they are evenly distributed around the axial line of the annular shell 1 in the front-to-back direction. The front end of each distributed pressure gasket 2 is folded backward, and the folding direction of each distributed pressure gasket 2 is toward the center position of the annular shell 1. The distributed pressure gasket 2 is made of aluminum alloy sheets with relatively strong elasticity. At the same time, the outer end of the annular shell 1 is made of stainless steel, which is not easy to rust, thereby increasing the service life of the explosion-proof bolts. An annular groove 6 opening backward is provided inside the front end of the annular shell 1, and the outer ring of the annular groove 6 is connected to the inner side wall of the front end of the annular shell 1. The annular groove 6 is formed by bending the front end of the annular shell 1 toward the center of the annular shell 1. The annular groove 6 and the annular shell 1 are integrally formed during the production process. In order to increase the production efficiency of the explosion-proof bolts, the opening direction of the annular groove 6 is inclined and extends backward in the direction toward the center of the annular shell 1, and the front end folded part of the distributed pressure gasket 2 penetrates into the annular groove 6. The diameter of the annular groove 6 is greater than twice the thickness of the distributed pressure gasket 2. The front end of the distributed pressure gasket 2 squeezes the inner side wall of the annular groove 6 under the action of elastic force, which facilitates the distributed pressure gasket 2 to enter the annular groove 6. At the same time, the distributed pressure gasket 2 can be squeezed inside the annular groove 6 to complete the initial fixation. The positioning screw 3 passes through the annular shell 1 horizontally and backwards. The positioning screw 3 is squeezed by the folded part of the distributed pressure gasket 2 and approaches the axial direction of the annular shell 1. The positioning screw 3 includes a nail cover 7 and a nail body 8. The nail cover 7 squeezes the distributed pressure gasket 2 horizontally and backwards, thereby connecting the positioning screw 3 and the annular shell 1 through the distributed pressure gasket 2. The diameter of the nail cover 7 is smaller than the inner wall of the annular shell 1, and can be pulled out from the rear end of the annular shell 1 along the inside of the annular shell 1 without the restriction of the distributed pressure gasket 2. The nail body 8 moves horizontally and backwards along the gap between multiple distributed pressure gaskets 2 and penetrates into the explosion-proof panel 5. The rear end of the nail body 8 is fixedly connected to the bottom of the explosion-proof panel 5.

[0022] The front end of the annular shell 1 is open and is provided with an environmental pollution protection cover 9, which is spirally connected to the front end of the annular shell 1. The outer wall of the annular shell 1 is provided with an external thread that matches the internal thread on the inner wall of the environmental pollution protection cover 9. The front-to-back length of the environmental pollution protection cover 9 is greater than the distance between the front end of the annular shell 1 and the rooting fixture 4, which facilitates the environmental pollution protection cover 9 to further prevent the fire of the outer wall of the annular shell 1. The rear end diameter of the annular shell 1 is smaller than the front end of the annular shell 1, and the rear end of the annular shell 1 penetrates into the rooting fixture 4. The diameter of the positioning screw 3 is smaller than the difference between the rear end diameter of the annular shell 1 and twice the thickness of the distributed pressure gasket 2, which facilitates the connection between the annular shell 1 and the rooting fixture 4. A glass mounting groove is provided on the upper part of the explosion relief panel 5, and explosion-proof glass 10 is provided inside the glass mounting groove. The annular outer shell 1 is provided below the glass mounting groove and is located in the middle position of the explosion relief panel 5 in the left and right direction. When the explosion relief bolt is separated, the pressure relief effect of the pressure relief port formed between the explosion relief panel 5 and the rooting fixing device 4 is increased. The pressure relief port area is larger and the pressure relief effect is better.

[0023] The invention is used in the process that, in normal use, the root fixing device 4 and the explosion relief panel 5 remain in a closed state. At this time, the positioning screw 3 is squeezed into the interior of the annular shell 1 by the distributed pressure gasket 2, and the rear end of the positioning screw 3 is fixedly connected to the explosion relief panel 5. The front end of the positioning screw 3 is elastically squeezed by the distributed pressure gasket 2 to ensure that the front end of the annular shell 1 does not move backward, thereby ensuring the normal use of the explosion relief carrier. When an explosion occurs, the positioning screw 3 is driven by the bottom of the explosion relief panel 5 to squeeze the distributed pressure gasket 2, and the rear end tension of the positioning screw 3 exceeds the distributed pressure gasket 2. The elastic limit of the force gasket 2 is reached, and then the positioning screw 3 passes through the gap between the multiple distributed pressure gaskets 2 and detaches from the annular shell 1 horizontally backward along the annular shell 1, thereby completing the connection and disconnection between the annular shell 1 and the positioning screw 3 in the explosion-proof bolt, and then the bottom of the explosion-proof panel 5 is detached from the rooting fixing device 4 and flipped backward to open. The pressure relief port formed by the explosion-proof panel 5 and the ship board in the backward flipped state allows the gas generated by the explosion to be discharged outdoors, thereby playing the explosion-proof role of the explosion-proof carrier. In short, the present invention has the advantages of long service life, not easy to be contaminated, easy installation, and accessories are not easy to be damaged or lost during installation.

[0024] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A distributed explosion relief bolt, arranged on an explosion relief carrier, characterized in that: It includes an annular shell, a distributed pressure gasket and a positioning screw. The explosion relief carrier is provided with a rooting fixing device and an explosion relief panel that can be folded open. The rooting fixing device is connected to the explosion relief panel through a distributed explosion relief bolt. The annular shell is a circular sleeve and passes through the rooting fixing device horizontally and backward. The outer side wall of the annular shell is fixedly connected to the inside of the explosion relief panel. The distributed pressure gasket is arranged inside the annular shell. There are multiple distributed pressure gaskets and they are evenly distributed around the axis of the annular shell in the front-to-back direction. The front end of each distributed pressure gasket is folded backward, and the folding direction of each distributed pressure gasket is opposite to the central axis position of the annular shell. An annular groove opening backwards is provided inside the front end of the annular shell, the outer ring of the annular groove is connected to the inner side wall of the front end of the annular shell, the opening direction of the annular groove extends backwards along an inclined direction toward the center of the annular shell, the front folded part of the distributed pressure gasket penetrates into the annular groove, the positioning screw passes through the annular shell horizontally backwards, the positioning screw approaches the axial direction of the annular shell under the extrusion of the folded part of the distributed pressure gasket, the rear end of the positioning screw passes through the rooting fixing device and is fixedly connected to the bottom of the explosion-proof panel, the front end of the annular shell is open and is provided with an environmental pollution protection cover, and the environmental pollution protection cover is spirally connected to the front end of the annular shell; The positioning screw comprises a nail cover and a nail body, the nail cover horizontally presses the distributed pressure gasket backwards, thereby connecting the positioning screw and the annular shell through the distributed pressure gasket, and the nail body horizontally moves backwards along the gaps between the multiple distributed pressure gaskets and penetrates into the explosion relief panel; The diameter of the annular groove is greater than twice the thickness of the distributed pressure gasket, and the front end of the distributed pressure gasket squeezes the inner wall of the annular groove under the action of elastic force; The annular groove is formed by bending the front end of the annular shell toward the center of the annular shell, and the annular groove and the annular shell are integrally formed during the production process; The rear end diameter of the annular shell is smaller than the front end of the annular shell, the rear end of the annular shell penetrates into the rooting fixture, and the diameter of the positioning screw is smaller than the difference between the rear end diameter of the annular shell and twice the thickness of the distributed pressure gasket.

2. A distributed explosion relief bolt according to claim 1, characterized in that: The outer wall of the annular shell is provided with an external thread matching the internal thread on the inner wall of the environmental pollution protection cover, and the front-to-back length of the environmental pollution protection cover is greater than the distance between the front end of the annular shell and the rooting fixing device.

3. A distributed explosion relief bolt according to claim 1, characterized in that: The distributed pressure gasket is made of an aluminum alloy sheet with relatively strong elasticity, and the outer end of the annular shell is made of stainless steel.

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