CN-224214773-U - Pressure relief valve and sealing equipment

CN224214773UCN 224214773 UCN224214773 UCN 224214773UCN-224214773-U

Abstract

The utility model relates to the technical field of valves, in particular to a pressure release valve and sealing equipment, wherein the pressure release valve comprises a valve body and a valve cover assembly, the valve body comprises a main body, an elastic piece and a fixing piece, the main body is provided with through holes, the valve cover assembly and the fixing piece are respectively arranged on two opposite sides of the through holes, the valve cover assembly comprises a cover plate and a sealing piece which are sequentially arranged towards the through holes, the valve cover assembly can be contacted or separated relative to the main body to realize the closing or opening of the through holes, and two ends of the elastic piece are respectively connected with the sealing piece and the fixing piece. When the valve cover component is separated from the main body, air is discharged, after the air pressure is balanced, the elastic component drives the valve cover component to reset to realize sealing again, the elastic component has uniform and adjustable reset force, the valve cover component is ensured to be opened or closed stably under the action of the tension of the elastic component, the sealing component is directly acted by the tension of the elastic component, the sealing and attaching state is kept to prevent the false opening when the pressure is not out of standard, and the sealing component is matched with the elastic component to form a dynamic balance sealing structure, so that the structural stability and the performance reliability of the pressure relief valve are improved.

Inventors

LI HONGJIE
ZHU YU
WU YUANJUN
WANG HUAI

Assignees

深圳市富程威科技股份有限公司

Dates

Publication Date: 20260508
Application Date: 20250521

Claims (10)

1. The pressure relief valve is characterized by comprising a valve body and a valve cover assembly, wherein the valve body comprises a main body, an elastic piece and a fixing piece, the main body is provided with a through hole, the valve cover assembly and the fixing piece are respectively arranged on two opposite sides of the through hole, the valve cover assembly comprises a cover plate and a sealing piece which are sequentially arranged towards the through hole, the valve cover assembly can be contacted or separated relative to the main body to realize the closing or opening of the through hole, and two ends of the elastic piece are respectively connected with the sealing piece and the fixing piece.
2. The pressure relief valve of claim 1, wherein said resilient member is a tension spring.
3. The relief valve of claim 1, wherein said body includes a seal portion disposed on a side adjacent to said cover plate, and wherein a radial dimension of said cover plate is greater than or equal to a radial dimension of said seal portion in a radial direction perpendicular to an axial direction of said through hole.
4. The pressure release valve of claim 3, wherein a first flange is disposed on a side of the cover plate facing the sealing portion, a first step is disposed on a side of the sealing portion facing the cover plate, a first gap is left between the first flange and the first step, a second step is disposed in the main body, and a second gap is left between the sealing member and the second step.
5. The pressure release valve of claim 1, wherein the elastic element is disposed in the through hole, the fixing element is fixedly connected with the main body, one end of the fixing element, which is far away from the elastic element, is flush with one end of the main body, which is far away from the valve cover assembly, a second flange is disposed on the side surface of the fixing element, which faces the direction of the main body, a third limiting step is disposed on the side surface of the main body, which faces the fixing element, and the second flange is abutted against the third limiting step.
6. The pressure relief valve of claim 1, wherein said valve cover assembly further comprises a stainless iron sheet sandwiched between said cover plate and said seal, said cover plate being fixedly connected to said stainless iron sheet, said cover plate being fixedly connected to said seal.
7. The pressure release valve according to claim 6, wherein one of the cover plate and the stainless iron sheet is provided with a limiting block, the other one is provided with a limiting hole, the limiting block is in interference fit connection with the limiting hole, and the cover plate is in interference fit connection with the sealing element, or in adhesive connection, or in threaded connection, or in snap connection, or in riveting connection.
8. The pressure relief valve of claim 1, wherein said valve body further comprises an inner seal ring, an inner seal groove is defined in said body, said inner seal ring being disposed at said inner seal groove, said seal member abutting said inner seal ring when said valve cover assembly is in contact with said body; And/or, the valve body further comprises a lower sealing ring, a lower sealing groove is formed in one end, far away from the valve cover assembly, of the main body, and the lower sealing ring is arranged at the lower sealing groove.
9. The pressure release valve according to claim 1, wherein a ventilation component is further arranged on the sealing piece, and the gas in the through hole passes through the ventilation component to reach the outer side of the pressure release valve.
10. The sealing device is characterized by comprising a sealing shell and the pressure relief valve according to any one of claims 1-9, wherein a containing cavity is formed in the sealing device, an opening which is communicated with the containing cavity and the outside is formed in the sealing shell, and the pressure relief valve is arranged at the opening and seals the opening.

Description

Pressure relief valve and sealing equipment Technical Field The utility model relates to the technical field of valves, in particular to a pressure relief valve and sealing equipment. Background Common energy storage devices, such as new energy battery packs, energy storage devices, and the like, need to form a sealing structure inside to prevent external environmental factors from interfering with internal devices. However, in the use process, the internal air pressure is increased due to factors such as temperature rise, gas generation in electrochemical reaction and the like possibly occurring in the energy storage device, and if the gas cannot be released in time, accidents are easily caused by pressure surge. As one solution, the pressure relief valve can be opened to release gas when the internal pressure of the energy storage device exceeds a threshold value. However, the structural stability of the existing pressure relief valve is difficult to meet the user requirements of higher standards. Disclosure of utility model In order to solve the problems, the utility model provides a pressure relief valve and sealing equipment. The utility model aims to solve the technical problems, and in one embodiment, the pressure release valve comprises a valve body and a valve cover assembly, wherein the valve body comprises a main body, an elastic piece and a fixing piece, the main body is provided with a through hole, the valve cover assembly and the fixing piece are respectively arranged on two opposite sides of the through hole, the valve cover assembly comprises a cover plate and a sealing piece which are sequentially arranged towards the through hole, the valve cover assembly can be contacted with or separated from the main body to realize the closing or opening of the through hole, and two ends of the elastic piece are respectively connected with the sealing piece and the fixing piece. Preferably, the elastic member is a tension spring. Preferably, the main body includes a sealing portion provided at a side close to the cap plate, and a radial dimension of the cap plate is greater than or equal to a radial dimension of the sealing portion in a radial direction perpendicular to an axial direction of the through hole. Preferably, a first flange is arranged on the side face, facing the sealing part, of the cover plate, a first step is arranged on the side face, facing the cover plate, of the sealing part, a first gap is reserved between the first flange and the first step, a second step is arranged in the main body, and a second gap is reserved between the sealing piece and the second step. Preferably, the elastic piece is arranged in the through hole, the fixing piece is fixedly connected with the main body, one end of the fixing piece, which is far away from the elastic piece, is flush with one end of the main body, which is far away from the valve cover assembly, a second flange is arranged on the side surface of the fixing piece, which faces the main body, and a third limiting step is arranged on the side surface of the main body, which faces the fixing piece, and the second flange is in butt joint with the third limiting step. Preferably, the valve cover assembly further comprises a stainless iron sheet clamped between the cover plate and the sealing piece, the cover plate is fixedly connected with the stainless iron sheet, and the cover plate is fixedly connected with the sealing piece. Preferably, one of the cover plate and the stainless iron sheet is provided with a limiting block, the other one of the cover plate and the stainless iron sheet is provided with a limiting hole, the limiting block is in interference fit connection with the limiting hole, and the cover plate is in interference fit connection with the sealing element, or in adhesive connection, or in threaded connection, or in snap connection, or in riveting connection. Preferably, the valve body further comprises an inner sealing ring, an inner sealing groove is formed in the main body, the inner sealing ring is arranged at the inner sealing groove, when the valve cover assembly is in contact with the main body, the sealing piece is in butt joint with the inner sealing ring, and/or the valve body further comprises a lower sealing ring, a lower sealing groove is formed in one end, far away from the valve cover assembly, of the main body, and the lower sealing ring is arranged at the lower sealing groove. Preferably, a ventilation component is further arranged on the sealing piece, and gas in the through hole reaches the outer side of the pressure release valve through the ventilation component. In order to solve the above technical problems, in another embodiment, a sealing device is provided, where the sealing device includes a sealing housing and the pressure relief valve, a receiving cavity is provided in the sealing device, an opening communicating the receiving cavity with the outside is provided on the sealing housing, and the pressure