Self-resetting adjustable pressure relief device

Abstract

The utility model provides a self-resetting adjustable pressure relief device, and particularly relates to treatment devices such as drying boxes for drying inflammable and explosive articles used in experiment places such as colleges and universities and scientific research institutions and incinerators for treating inflammable and explosive waste gas applied to the environmental protection industry. The pressure relief device mainly comprises a balance weight part, a heat preservation part, a sliding part and a support part. The pressure relief pressure of the device can be adjusted by adjusting the number of the weight stacks, and the device can automatically reset under the action of gravity after pressure relief is completed and can be repeatedly used.

Description

Technical Field

[0001] The utility model belongs to a self - reset adjustable pressure relief device applicable to explosion - proof and pressure - relief equipment, especially for drying ovens used in experimental sites such as universities and research institutes for drying flammable and explosive items, and incinerators used in the environmental protection industry for treating flammable and explosive waste gases and other treatment devices. Background Technique

[0002] At present, the drying ovens used in laboratories such as universities and research institutes do not have pressure - relief capabilities. On the one hand, experimental personnel cannot dry experimental materials that emit flammable and explosive gases. And some experimental personnel dry them without understanding the properties of the experimental materials. Since the experimental materials emit flammable and explosive organic gases, the drying oven explodes, resulting in serious safety accidents. On the other hand, experimental materials that are not dangerous under normal drying conditions may have accidents of combustion and explosion due to malfunctions in the temperature sensor or electric heating control of the drying oven, resulting in uncontrolled heating and the drying oven temperature exceeding the set temperature. Although the incinerators used in the environmental protection industry for treating flammable and explosive organic waste gases are installed with explosion - relief discs during the design process, the explosion - relief discs are disposable products. Once they are damaged under high pressure, they cannot be used continuously and can only be reinstalled with new explosion - relief discs, which has a high usage cost. Therefore, a reusable and pressure - relief pressure - adjustable relief device is needed to solve the above problems.

[0003] The utility model provides a self - reset adjustable pressure relief device, especially applicable to drying ovens in laboratories such as universities and research institutes and organic waste gas incinerators in the environmental protection industry and other devices that require explosion - proof and pressure - relief. A self - reset adjustable pressure relief device mainly consists of a counterweight part, a heat - preservation part, a sliding part, and a bracket part. Summary of the Invention

[0004] The purpose of the utility model is to provide a self - reset adjustable pressure relief device, especially for drying ovens used in experimental sites such as universities and research institutes for drying flammable and explosive items, and incinerators used in the environmental protection industry for treating flammable and explosive waste gases and other treatment devices.

[0005] The technical solution of the utility model is realized by adopting the following technical solutions.

[0006] The utility model is a self - reset adjustable pressure relief device, mainly consisting of a counterweight part, a heat - preservation part, a sliding part, and a bracket part.

[0007] Furthermore, the counterweight part includes a counterweight bracket, a counterweight column, counterweight plates, pins for connecting them to each other, and fixing bolts for fixing the counterweight plates. The counterweight part is symmetrically distributed left and right, and the pressure relief pressure can be adjusted by adjusting the number of installed counterweight plates.

[0008] Furthermore, the heat preservation part includes floating pressure relief heat preservation and fixed heat preservation. The floating pressure relief heat preservation is adhesively fixed to the floating pressure relief plate through high-temperature resistant glue, and the fixed heat preservation is installed under the fixed plate through high-temperature resistant glue. The function of the heat preservation part is to insulate and heat-preserve the drying oven or incinerator.

[0009] Furthermore, the sliding part includes a sliding bracket, a floating pressure relief plate, and a sliding optical axis. The sliding bracket is sleeved on the sliding optical axis and can slide up and down along the sliding optical axis. The floating pressure relief plate is fixed to the sliding bracket by bolts and can move up and down with the sliding bracket.

[0010] Furthermore, the bracket part includes a fixed bracket and a fixed bracket pin. The fixed bracket is fixed to the fixed plate by bolts and is connected to the counterweight column through the fixed bracket pin, playing a role in supporting the counterweight part.

[0011] The utility model has the following advantages.

[0012] (1) The self-resetting adjustable pressure relief device of the utility model is entirely made of stainless steel, having the advantages of anti-corrosion, beauty, high temperature resistance, and high strength. The heat preservation part adopts high-temperature alumina hollow sphere brick material, having the advantages of light weight, high temperature resistance, low thermal conductivity, and energy saving.

[0013] (2) The pressure relief pressure of the self-resetting adjustable pressure relief device of the utility model is adjustable, and different pressure relief pressures can be adjusted according to different usage scenarios to meet the usage requirements of various pressure relief conditions.

[0014] (3) The self-resetting adjustable pressure relief device of the utility model has a simple and reliable structure. After the pressure is released, it can reset itself and be reused, improving the safety performance while reducing the usage cost. Brief Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the normal working state of the device of the present invention.

[0016] Figure 2 It is a schematic diagram of the pressure relief state of the device of the present invention.

[0017] Figure 3 It is a sectional view of the normal working state of the device of the present invention.

[0018] Figure 4 It is a sectional view of the pressure relief state of the device of the present invention. Embodiment

[0019] The present invention will be further described in detail below with reference to the drawings and specific embodiments.

[0020] As Figure 1 and Figure 2As shown in the figure, the present utility model provides a self-resetting adjustable pressure relief device, which includes a floating relief plate 1, a sliding bracket 2, a sliding bracket pin 3, a counterweight bracket 4, a counterweight bracket pin 5, a counterweight column 6, a counterweight plate 7, a counterweight plate fixing bolt 8, a fixing bracket 9, a fixing bracket pin 10, a sliding optical axis 11, a floating pressure relief insulation 12, a fixing plate 13, and a fixing insulation 14. The fixing insulation 14 is fixed under the fixing plate 13 by a high-temperature resistant adhesive, and the pressure relief opening of the fixing insulation 14 corresponds to the pressure relief opening of the fixing plate 13. Two sliding optical axes 11 are symmetrically and perpendicularly welded on both sides of the pressure relief opening of the fixing plate 13. Two sliding brackets 2 are respectively sleeved on the two sliding optical axes 11 and can slide up and down along the sliding optical axes 11. The floating relief plate 1 is connected and fixed to the two sliding brackets 2 by bolts. The floating pressure relief insulation 12 is fixed under the floating relief plate 1 by a high-temperature resistant adhesive. One end of the counterweight bracket 4 is connected to the sliding bracket 2 through the sliding bracket pin 3. The middle position of the counterweight bracket 4 is connected to the upper end of the counterweight column 6 through the counterweight bracket pin 5. The lower end of the counterweight column 6 is connected to the fixing bracket 9 through the fixing bracket pin 10. The fixing bracket 9 is fixed to the fixing plate 13 by bolts. The other end of the counterweight bracket 4 is installed and fixed with the counterweight plate 7 through the counterweight plate fixing bolt 8.

[0021] As Figure 3 shown, when the device is working normally, since the total weight of the floating relief plate 1, the floating pressure relief insulation 12 and the two sliding brackets 2 is greater than the weight of the symmetrically distributed counterweight plates 7, the floating pressure relief insulation 12 is tightly pressed against the pressure relief opening of the fixing insulation 14, making the overall drying oven or incinerator device in a closed state. As Figure 4 shown, when deflagration or explosion occurs inside the drying oven or incinerator device, due to the instantaneous increase in internal pressure, the pressure acts upward from bottom to top on the bottom surface of the floating pressure relief insulation 12 as shown by the arrow in the figure. The floating pressure relief insulation 12 drives the floating relief plate 1 and the sliding brackets 2 to move upward, and at the same time the counterweight plates 7 move downward in linkage. During the upward movement of the floating pressure relief insulation 12, a gradually increasing gap will be generated between it and the pressure relief opening of the fixing insulation 14. The excessive pressure is released through the gap here. After the pressure is released, the overall composed of the floating relief plate 1, the floating pressure relief insulation 12 and the two sliding brackets 2 will move vertically downward under the action of gravity under the constraint of the sliding optical axes 11 until the floating pressure relief insulation 12 is tightly attached to the pressure relief opening of the fixing insulation 14, and the device returns to the normal working state. During the application process, the pressure relief opening value is adjusted by adjusting the number of the counterweight plates 7.

[0022] The above is only a preferred embodiment of the present utility model, and does not impose any form of restriction on the structure of the present utility model. Any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present utility model all fall within the protection scope of the present utility model.

Claims

1. A self-resetting adjustable pressure relief device, characterized in that: It includes a counterweight part, a heat preservation part, a sliding part and a bracket part. The counterweight part includes a counterweight bracket, a counterweight column, a counterweight plate, pins for mutual connection, and fixing bolts for fixing the counterweight plate. The heat preservation part includes floating pressure relief insulation and fixed heat preservation. The sliding part includes a sliding bracket, a floating pressure relief plate and a sliding optical axis. The bracket part includes a fixed bracket and a fixed bracket pin.

2. A self-resetting adjustable pressure relief device according to claim 1, characterized in that: The counterweight part is distributed symmetrically on the left and right. The counterweight bracket is connected with the sliding bracket and the counterweight column through pins. The end of the counterweight bracket is fixed with a counterweight plate by bolts. The counterweight plate can be increased or decreased.

3. A self-resetting adjustable pressure relief device according to claim 1, characterized in that: The floating pressure relief insulation and the fixed insulation are respectively fixed on the floating pressure relief plate and the fixed plate by means of high temperature resistant glue.

4. A self-resetting adjustable pressure relief device according to claim 1, characterized in that: The sliding bracket is sleeved on the sliding optical axis, and the floating pressure relief plate is fixed on the two sliding brackets by bolts. The floating pressure relief plate and the sliding bracket can move vertically up and down along the sliding optical axis.

5. A self-resetting adjustable pressure relief device according to claim 1, characterized in that: The bottom of the fixing bracket is fixed to the fixing plate by bolts, and the upper part of the fixing bracket is connected to the counterweight column by a fixing bracket pin.

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