Adjustable emergency pressure relief manhole

Abstract

The utility model discloses an adjustable emergency pressure relief manhole which comprises a main body mechanism and an adjusting mechanism. The main body mechanism comprises a pipe body, an exhaust pipe installed on one side of the pipe body and communicated with an inner cavity of the pipe body, a baffle fixed to the inner wall of the pipe body, a round pipe fixed to the inner top wall of the pipe body, and an annular plate fixedly connected to the outer side of the round pipe in a sleeving mode and fixed to the inner wall of the pipe body. One end of the sealing piece is embedded in an inner cavity of the round pipe, the other end of the sealing piece is attached to the baffle, one end of the movable rod is embedded in the inner cavity of the round pipe, the other end of the movable rod extends out of the pipe body, the pipe body is used for installing other assemblies, and the bottom end of the pipe body is fixed to the tank body through bolts and communicated with the inner cavity of the tank body, so that air in the inner cavity of the tank body is conveniently exhausted outwards; an air hole is formed in the middle of the baffle, air can pass through the air hole conveniently, the top end of the round pipe is fixed to the inner top wall of the pipe body, and the adjustable emergency pressure relief manhole has the advantages of being adjustable in gas discharge pressure and high in practicability.

Description

An adjustable emergency pressure relief manhole Technical Field

[0001] This utility model relates to the field of pressure relief manhole technology, specifically an adjustable emergency pressure relief manhole. Background Technology

[0002] A pressure relief manhole is a rapid pressure relief device, with the same technical performance and main component materials as a breather manhole. It is a safety emergency ventilation device installed on food and pharmaceutical storage tanks, typically used in conjunction with a breather valve installed on the tank top. It maintains normal pressure inside the tank, preventing accidents caused by sudden overpressure or vacuum due to unforeseen circumstances. It offers advantages such as constant pressure discharge, constant pressure intake, flexible closing, compact structure, good sealing performance, and high safety and reliability.

[0003] The existing pressure relief manholes have the following drawbacks during use: they can only discharge at a constant pressure, and when the gas pressure in the tank reaches the specified pressure, the excess air is discharged. It is difficult to adjust the gas discharge pressure inside the tank, and the applicable range is small. Therefore, there is room for improvement. Summary of the Invention

[0004] This utility model aims to solve one of the technical problems existing in the prior art or related technologies.

[0005] Therefore, the technical solution adopted by this utility model is as follows: an adjustable emergency pressure relief manhole, including: a main body and an adjustment mechanism. The main body includes a pipe body, an exhaust pipe installed on one side of the pipe body and communicating with the inner cavity of the pipe body, a baffle fixed on the inner wall of the pipe body, a round pipe fixed on the top wall of the pipe body, an annular plate fixedly sleeved on the outside of the round pipe and fixed to the inner wall of the pipe body, a sealing member with one end embedded in the inner cavity of the round pipe and the other end attached to the baffle, and a movable rod with one end embedded in the inner cavity of the round pipe and the other end extending out of the pipe body.

[0006] The movable rod includes a second piston movably disposed inside the cylindrical tube, a pressure sensor installed at the bottom of the second piston, and a second support rod with one end fixed to the top of the second piston and the other end extending out of the tube.

[0007] The adjustment mechanism includes two drive rings rotatably mounted on the top of the tube body, an adjustment rod passing through the drive rings and fixedly connected at its top to the top of the movable rod, a display screen mounted on the top of the adjustment rod, an adjustment ring rotatably mounted on the top of the tube body and engaging with the drive rings, and a locking member mounted on the outer surface of the tube body.

[0008] In a preferred embodiment, the present invention can be further configured such that: the sealing member includes a first piston movably disposed in the inner cavity of the circular tube, a first support rod fixed at the bottom end of the first piston, and a sealing plug installed at the bottom end of the first support rod, wherein the circular tube is filled with gas in the space between the first piston and the second piston.

[0009] In a preferred embodiment, the present invention can be further configured such that: an annular seat is symmetrically fixed at the top end of the tube body, and the driving ring includes a threaded sleeve that is rotatably fitted inside the annular seat and a first toothed ring fixed on the outer surface of the threaded sleeve.

[0010] In a preferred embodiment, the present invention can be further configured such that: the adjusting rod includes a threaded rod that extends through the threaded sleeve into the inner cavity of the tube and a support plate that connects the end of the threaded rod and the end of the movable rod, wherein the threaded sleeve and the threaded rod mesh with each other.

[0011] In a preferred embodiment, the present invention can be further configured such that the adjusting ring includes an annular knob rotatably mounted on the outer side of the tube body and a second toothed ring fixed on the inner wall of the annular knob, the second toothed ring meshing with the first toothed ring.

[0012] In a preferred embodiment, the present invention can be further configured such that the locking element includes a fixing ring fixed on the outer side of the tube body, a spring installed at the top of the fixing ring, a movable ring movably sleeved on the outer side of the tube body and fixedly connected to the top of the spring, and a plug rod fixed in a ring array at the top of the movable ring.

[0013] In a preferred embodiment, the present invention can be further configured such that the bottom end of the annular knob has slots arranged in a circular array, and the insert rod is fitted into the slots.

[0014] By adopting the above technical solution, the beneficial effects achieved by this utility model are as follows:

[0015] 1. In this utility model, a baffle is installed on the inner wall of the pipe body, and a circular pipe is installed on the inner top wall of the pipe body. An annular plate is provided on the outer side of the bottom of the circular pipe and connected to the inner wall of the pipe body, forming an air cavity between the baffle and the annular plate. An exhaust pipe is installed on the outer side of the pipe body and communicates with the air cavity. A sealing member is provided, with one end of the sealing member extending into the inner cavity of the circular pipe and the other end attached to the baffle. The inner cavity of the circular pipe is filled with gas. Through the above arrangement, when the gas pressure inside the tank is greater than the gas pressure inside the circular pipe, the sealing member moves upward under the action of the gas pressure inside the tank, causing the baffle to open. At this time, the gas inside the tank enters the exhaust pipe through the baffle for discharge, preventing the gas pressure inside the tank from depressurizing. If the size is too large, a movable rod extending out of the tube is installed inside the circular tube, and drive rings are rotatably installed on both sides of the top of the tube. An adjusting rod is installed through the drive ring, and the top of the adjusting rod is fixedly connected to the movable rod. An adjusting ring is rotatably installed at the top of the tube and engages with the drive ring. With the above configuration, rotating the adjusting ring drives the drive ring to rotate, the drive ring rotates and drives the adjusting rod to move, and the adjusting rod moves and drives the movable rod to move synchronously. The closer the movable rod is to the closed ring, the greater the air pressure inside the circular tube, that is, the greater the gas discharge pressure inside the tank, and vice versa. This allows the breathing manhole to regulate the air discharge pressure inside the tank, increasing its practicality.

[0016] 2. In this utility model, the movable rod consists of a second piston, a pressure sensor, and a second support rod. A display screen is installed at the top of the adjusting rod. The pressure sensor monitors the air pressure value inside the circular tube in real time and transmits it to the display screen for display, which facilitates precise adjustment by the user. In addition, a locking component is installed on the outer surface of the tube. After the adjusting ring is adjusted, the locking component can lock the position of the adjusting ring to ensure the stability of the adjusting ring and further improve the practical performance. Attached Figure Description

[0017] Figure 1 is a schematic diagram of the structure of this utility model;

[0018] Figure 2 is a cross-sectional schematic diagram of this utility model;

[0019] Figure 3 is a schematic cross-sectional view of the tube body of this utility model;

[0020] Figure 4 is a partial exploded view of the structure of this utility model;

[0021] Figure 5 is a schematic diagram of part of the adjustment mechanism of this utility model.

[0022] Figure label:

[0023] 100. Main body; 110. Pipe body; 111. Annular seat; 120. Exhaust pipe; 130. Baffle; 140. Circular tube; 150. Annular plate; 160. Sealing component; 161. First piston; 162. First support rod; 163. Sealing plug; 170. Movable rod; 171. Second piston; 172. Pressure sensor; 173. Second support rod;

[0024] 200. Adjustment mechanism; 210. Drive ring; 211. Threaded sleeve; 213. First toothed ring; 220. Adjustment rod; 221. Threaded rod; 222. Support plate; 230. Display screen; 240. Adjustment ring; 241. Annular knob; 2411. Slot; 242. Second toothed ring; 250. Locking element; 251. Fixed ring; 252. Spring; 253. Movable ring; 254. Insert rod. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings. It should be noted that, unless otherwise specified, the embodiments and features of the present utility model can be combined with each other.

[0026] Some embodiments of the present invention are described below with reference to the accompanying drawings.

[0027] As shown in Figures 1-5, this embodiment provides an adjustable emergency pressure relief manhole, including: a main body mechanism 100 and an adjustment mechanism 200.

[0028] The main structure 100 includes a pipe body 110, an exhaust pipe 120 installed on one side of the pipe body 110 and communicating with the inner cavity of the pipe body 110, a baffle 130 fixed on the inner wall of the pipe body 110, a round pipe 140 fixed on the inner top wall of the pipe body 110, an annular plate 150 fixedly sleeved on the outside of the round pipe 140 and fixed to the inner wall of the pipe body 110, a sealing member 160 with one end embedded in the inner cavity of the round pipe 140 and the other end attached to the baffle 130, and a movable rod 170 with one end embedded in the inner cavity of the round pipe 140 and the other end extending out of the pipe body 110.

[0029] The tube body 110 is used to install other components. The bottom end of the tube body 110 is fixed to the tank body by bolts and communicates with the inner cavity of the tank body to facilitate the exhaust of air from the inner cavity of the tank body. The baffle 130 has an air hole in the middle to facilitate the passage of air. The top end of the round tube 140 is fixed to the inner top wall of the tube body 110 and is used to install the sealing element 160 and the movable rod 170. The annular plate 150 is used to fix the bottom of the round tube 140 and forms an air cavity between the annular plate 150 and the baffle 130. The exhaust pipe 120 communicates with the air cavity. When the sealing element 160 is opened, the air in the tank body enters the air cavity through the air hole in the middle of the baffle 130 and is then discharged outward through the exhaust pipe 120.

[0030] The sealing member 160 is used to seal the air hole in the middle of the baffle 130, and includes a first piston 161 movably disposed in the inner cavity of the circular tube 140, a first support rod 162 fixed to the bottom end of the first piston 161, and a sealing plug 163 installed at the bottom end of the first support rod 162. Meanwhile, the movable rod 170 includes a second piston 171 movably disposed in the inner cavity of the circular tube 140, a pressure sensor 172 installed at the bottom end of the second piston 171, and a second support rod 173 with one end fixed to the top end of the second piston 171 and the other end extending out of the tube body 110. The circular tube 140... The space between the first piston 161 and the second piston 171 is filled with gas. By controlling the gas pressure between the first piston 161 and the second piston 171, the opening pressure of the sealing member 160 can be controlled, that is, the air discharge pressure inside the tank can be controlled. When the gas pressure inside the tank is greater than the gas pressure inside the circular tube 140, the sealing member 160 moves upward under the action of the gas pressure inside the tank, causing the baffle 130 to open. At this time, the gas inside the tank enters the exhaust pipe 120 through the baffle 130 for discharge, thus avoiding excessive gas pressure inside the tank.

[0031] The regulating mechanism 200 is used to regulate the gas pressure inside the circular tube 140, thereby controlling the gas discharge pressure inside the tank. It includes two drive rings 210 rotatably mounted on the top of the tube 110, an regulating rod 220 passing through the drive rings 210 and fixedly connected at its top to the top of the movable rod 170, a display screen 230 mounted on the top of the regulating rod 220, an regulating ring 240 rotatably mounted on the top of the tube 110 and engaging with the drive rings 210, and a locking member 250 mounted on the outer surface of the tube 110.

[0032] A ring seat 111 is symmetrically fixed at the top of the tube body 110. The drive ring 210 includes a threaded sleeve 211 that is rotatably fitted inside the ring seat 111 and a first toothed ring 213 fixed on the outer surface of the threaded sleeve 211. Meanwhile, the adjusting rod 220 includes a threaded rod 221 that passes through the threaded sleeve 211 and extends into the inner cavity of the tube body 110, and a support plate 222 that connects the end of the threaded rod 221 to the end of the movable rod 170. The threaded sleeve 211 and the threaded rod 221 mesh with each other. With this arrangement, when the threaded sleeve 211 rotates, it drives the threaded rod 221 to move up and down. The up and down movement of the threaded rod 221 drives the movable rod 170 to move up and down through the support plate 222, that is, to control the air pressure in the circular tube 140. The closer the movable rod 170 is to the closed ring, the greater the air pressure in the circular tube 140, that is, the greater the gas discharge pressure in the tank, and vice versa.

[0033] The pressure sensor 172 is electrically connected to the display screen 230 via a wire. The pressure sensor 172 can monitor the air pressure value inside the circular tube 140 in real time and transmit it to the display screen 230 for display, so that users can make precise adjustments.

[0034] The adjusting component is used to drive the two drive rings 210 to rotate synchronously. It includes an annular knob 241 rotatably mounted on the outer side of the tube body 110 and a second toothed ring 242 fixed on the inner wall of the annular knob 241. The second toothed ring 242 meshes with the first toothed ring 213. When the user rotates the annular knob 241, it drives the second toothed ring 242 to rotate. The rotation of the second toothed ring 242 drives the first toothed ring 213 to rotate, that is, it drives the threaded sleeve 211 to rotate.

[0035] The locking element 250 is used to lock the adjusting ring 240 to ensure the stability of the adjusting ring 240. The locking element 250 includes a fixed ring 251 fixed on the outer surface of the tube body 110, a spring 252 installed on the top of the fixed ring 251, a movable ring 253 movably sleeved on the outer surface of the tube body 110 and fixedly connected to the top of the spring 252, and a plug rod 254 fixed in a ring array on the top of the movable ring 253. The bottom end of the ring knob 241 has a slot 2411 in a ring array. The plug rod 254 is fitted into the slot 2411 to lock the ring knob 241. When it is necessary to rotate the ring knob 241, pull down the movable ring 253 to drive the plug rod 254 out of the slot 2411 at the bottom end of the ring knob 241, thereby releasing the lock on the ring knob 241.

[0036] The working principle and usage process of this utility model are as follows: During use, the pipe body 110 is installed on the tank body, and the pipe body 110 is connected to the inner cavity of the tank. When the gas pressure inside the tank is greater than the gas pressure inside the circular pipe 140, the sealing member 160 moves upward under the action of the gas pressure inside the tank, causing the baffle 130 to open. At this time, the gas inside the tank enters the exhaust pipe 120 through the baffle 130 for discharge, preventing excessive gas pressure inside the tank. When it is necessary to adjust the gas discharge pressure inside the tank, pull down the movable ring 253, causing the insertion rod 254 to disengage from the slot 2411 at the bottom of the annular knob 241, releasing the lock on the annular knob 241. Rotating the annular knob 241 drives the second toothed ring 242 to... Rotation causes the second toothed ring 242 to rotate, which in turn causes the first toothed ring 213 to rotate, which in turn causes the threaded sleeve 211 to rotate. The rotation of the threaded sleeve 211 causes the threaded rod 221 to move up and down. The movement of the threaded rod 221, through the support plate 222, causes the movable rod 170 to move up and down. The closer the movable rod 170 is to the closed ring, the greater the air pressure inside the circular tube 140, that is, the greater the gas discharge pressure inside the tank. Conversely, the same applies. After adjustment, the movable ring 253 is released. Under the action of the spring 252, the movable ring 253 moves upward, causing the insertion rod 254 to be inserted into the slot 2411 at the bottom of the annular knob 241, fixing and limiting the annular knob 241 to ensure its stability.

[0037] Although embodiments of the present invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An adjustable emergency pressure relief manhole, comprising: The main body (100) and the adjustment mechanism (200) are characterized in that the main body (100) includes a pipe (110), an exhaust pipe (120) installed on one side of the pipe (110) and communicating with the inner cavity of the pipe (110), a baffle (130) fixed on the inner wall of the pipe (110), a round pipe (140) fixed on the inner top wall of the pipe (110), an annular plate (150) fixedly sleeved on the outside of the round pipe (140) and fixed to the inner wall of the pipe (110), a sealing member (160) with one end embedded in the inner cavity of the round pipe (140) and the other end attached to the baffle (130), and a movable rod (170) with one end embedded in the inner cavity of the round pipe (140) and the other end extending out of the pipe (110); the movable rod (170) includes a movable rod. The second piston (171) is movably installed in the inner cavity of the round tube (140), the air pressure sensor (172) is installed at the bottom of the second piston (171), and the second support rod (173) is fixed at one end to the top of the second piston (171) and the other end extends out of the tube body (110); the adjustment mechanism (200) includes two drive rings (210) rotatably installed at the top of the tube body (110), an adjustment rod (220) passing through the drive rings (210) and fixedly connected at the top of the movable rod (170), a display screen (230) installed at the top of the adjustment rod (220), an adjustment ring (240) rotatably installed at the top of the tube body (110) and meshing with the drive rings (210), and a locking member (250) installed on the outer surface of the tube body (110).

2. The adjustable emergency pressure relief manhole according to claim 1, characterized in that, The closure (160) includes a first piston (161) movably disposed in the inner cavity of the circular tube (140), a first support rod (162) fixed at the bottom end of the first piston (161), and a sealing plug (163) installed at the bottom end of the first support rod (162). The circular tube (140) is filled with gas in the space between the first piston (161) and the second piston (171).

3. An adjustable emergency pressure relief manhole according to claim 1, characterized in that, The top end of the tube (110) is symmetrically fixed with an annular seat (111), and the drive ring (210) includes a threaded sleeve (211) that is rotatably fitted inside the annular seat (111) and a first toothed ring (213) fixed on the outer surface of the threaded sleeve (211).

4. An adjustable emergency pressure relief manhole according to claim 3, characterized in that, The adjusting rod (220) includes a threaded rod (221) that extends into the inner cavity of the tube body (110) through a threaded sleeve (211) and a support plate (222) that connects the end of the threaded rod (221) to the end of the movable rod (170). The threaded sleeve (211) and the threaded rod (221) mesh with each other.

5. An adjustable emergency pressure relief manhole according to claim 3, characterized in that, The adjusting ring (240) includes an annular knob (241) rotatably mounted on the outer side of the tube body (110) and a second toothed ring (242) fixed on the inner wall of the annular knob (241), the second toothed ring (242) meshing with the first toothed ring (213).

6. An adjustable emergency pressure relief manhole according to claim 1, characterized in that, The locking element (250) includes a fixing ring (251) fixed on the outer side of the tube body (110), a spring (252) installed on the top of the fixing ring (251), a movable ring (253) movably sleeved on the outer side of the tube body (110) and fixedly connected to the top of the spring (252), and a plug rod (254) fixed in a ring array on the top of the movable ring (253).

7. An adjustable emergency pressure relief manhole according to claim 5, characterized in that, The bottom of the annular knob (241) has slots (2411) arranged in a ring array, and the insert (254) is fitted into the slots (2411).

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