CN-224214732-U - Light moment multiple sealing gate valve

Abstract

The utility model relates to the technical field of light moment gate valves, in particular to a light moment multiple sealing gate valve which comprises a gate valve body, wherein a vertical gate plate is arranged in the middle of the inner side of the gate valve body, a high platform is fixedly connected to the middle of the top end of the gate valve body, an opening and closing mechanism is arranged between the high platform and the gate plate, valve seats are arranged at two ends of the inner side of the gate valve body, and a sealing mechanism is arranged between the valve seats and the gate plate. According to the utility model, through the matching use of the sealing block and the conical groove on the valve seat and the matching of the elastic reset action of the O-shaped ring and the pretightening force of the spring, the triple dynamic sealing effect is realized in the opening and closing process of the valve, and the problem of internal leakage caused by the abrasion of the sealing surface of the existing gate valve under the working condition of high pressure or pressure fluctuation is solved.

Inventors

• TANG YANLI
• Xiang Youxuan
• ZHANG HONGHUI
• ZHANG JIANWU
• HU ZE
• WANG YONGZHONG
• JIAO HU

Assignees

• 浙江捷宇阀门有限公司

Dates

Publication Date

20260508

Application Date

20250627

Claims (6)

1. 1. A light moment multiple sealing gate valve is characterized by comprising The gate valve comprises a gate valve body (1), wherein a vertical gate plate (2) is arranged in the middle of the inner side of the gate valve body, a high table (3) is fixedly connected to the middle of the top end of the gate valve body (1), and an opening and closing mechanism is arranged between the high table (3) and the gate plate (2); Valve seats (4) are arranged at two ends of the inside of the gate valve body (1), and a sealing mechanism is arranged between the valve seats (4) and the gate plate (2).
2. 2. The light moment multiple seal gate valve of claim 1, wherein the opening and closing mechanism comprises a sleeve (5) fixedly connected to the middle of the top end of the gate plate (2), and a hand wheel (6) rotatably connected to the middle of the high platform (3) through a bearing, and a screw rod (7) in threaded connection with the sleeve (5) is fixedly connected to the bottom end of the hand wheel (6).
3. 3. The light moment multiple seal gate valve according to claim 2, wherein the outer parts of the upper end and the lower end of the two sides of the gate plate (2) are fixedly connected with sealing rings (8), and the sealing rings (8) are in sliding fit with the inner walls of the gate valve body (1) and the high platform (3).
4. 4. The light moment multiple seal gate valve of claim 1, wherein the seal mechanism comprises a valve seat (4) movably connected to two sides of the middle of the gate valve body (1), and a seal ring (10) fixedly connected to the outer wall of the end of the valve seat (4), and a spring (11) is movably connected between the seal ring (10) and the gate valve body (1) and positioned outside the valve seat (4).
5. 5. The light moment multiple seal gate valve of claim 4, wherein the seal mechanism further comprises a movable groove (12) arranged in the middle of the gate plate (2) and seal blocks (13) connected to two ends inside the movable groove (12) in a sliding mode, an annular groove (14) is formed in the outer side of one end, far away from the valve seat (4), of each seal block (13), a baffle ring (15) connected with the seal blocks (13) in a sliding mode is fixedly connected to the middle of the inner wall of the movable groove (12), an O-shaped ring (16) is sleeved between the baffle ring (15) and the seal blocks (13) and is positioned outside the annular groove (14), one end, close to the seal blocks (13), of each valve seat (4) is provided with a conical groove (17), and two ends of each seal block (13) are matched with the conical groove (17).
6. 6. The light moment multiple seal gate valve according to claim 1, wherein a runner (9) is penetratingly arranged below the middle of the gate plate (2).

Description

Light moment multiple sealing gate valve Technical Field The utility model relates to the technical field of light moment gate valves, in particular to a light moment multiple seal gate valve. Background The gate valve is used as a key control component in an industrial pipeline system, is widely applied to the fields of petroleum, chemical industry, electric power and the like, has the core function of realizing reliable cutting and adjustment of medium flow, and under the working condition of high pressure, high temperature or corrosive medium, the conventional gate valve often faces the problems of insufficient sealing performance, large operation moment and the like, and along with the development of industrial equipment to high efficiency and energy conservation, the gate valve has higher requirements on sealing reliability, operation portability and service life. The existing gate valve generally adopts a single sealing structure, is easy to cause sealing failure due to abrasion of a sealing surface or fatigue of an elastic element under high pressure or pressure fluctuation working conditions, and particularly when the pressure of a medium suddenly rises, the traditional sealing structure lacks a pressure self-adaptive compensation mechanism, so that stable sealing specific pressure is difficult to maintain, and internal leakage easily occurs after long-term use. Disclosure of utility model The utility model aims to provide a light moment multiple sealing gate valve so as to solve the problems in the prior art. In order to achieve the above purpose, the present utility model provides the following technical solutions: a light moment multiple seal gate valve, comprising The gate valve comprises a gate valve body, wherein a vertical gate plate is arranged in the middle of the inner side of the gate valve body, a high table is fixedly connected to the middle of the top end of the gate valve body, and an opening and closing mechanism is arranged between the high table and the gate plate; valve seats are arranged at two ends of the inside of the gate valve body, and a sealing mechanism is arranged between the valve seats and the gate plate. Preferably, the opening and closing mechanism comprises a sleeve fixedly connected to the middle of the top end of the flashboard and a hand wheel rotatably connected to the middle of the high platform through a bearing, and a screw rod in threaded connection with the sleeve is fixedly connected to the bottom end of the hand wheel; Preferably, the outer parts of the upper end and the lower end of the two sides of the flashboard are fixedly connected with sealing rings, and the sealing rings are in sliding fit with the gate valve body and the inner wall of the high platform; Preferably, the sealing mechanism comprises a valve seat movably connected to two sides of the middle part of the gate valve body and a sealing ring fixedly connected to the outer wall of the end head of the valve seat, and a spring is movably connected between the sealing ring and the gate valve body and positioned outside the valve seat; Preferably, the sealing mechanism further comprises a movable groove arranged in the middle of the flashboard and sealing blocks connected to two ends of the inside of the movable groove in a sliding manner, an annular groove is formed in the outer side of one end, far away from the valve seat, of the sealing blocks, a baffle ring connected with the sealing blocks in a sliding manner is fixedly connected to the middle of the inner wall of the movable groove, an O-shaped ring is sleeved between the baffle ring and the sealing blocks and positioned outside the annular groove, a conical groove is formed in one end, close to the sealing blocks, of the valve seat, and two ends of the sealing blocks are matched with the conical groove; Preferably, a runner is penetratingly arranged below the middle of the flashboard. Compared with the prior art, the utility model has the beneficial effects that: 1. The light moment multiple sealing gate valve achieves the effect of triple dynamic sealing in the opening and closing process of the valve by matching the sealing block with the conical groove on the valve seat and matching with the elastic resetting action of the O-shaped ring and the pretightening force of the spring, and solves the problem of internal leakage caused by abrasion of the sealing surface of the existing gate valve under the working condition of high pressure or pressure fluctuation. 2. According to the light moment multiple sealing gate valve, the medium pressure acts on one end of the valve seat far away from the sealing block to form a bidirectional pressure compensation effect, so that the self-enhanced sealing effect that the higher the medium pressure is, the larger the sealing specific pressure is achieved, and the problem of sealing failure caused by the lack of a pressure self-adaptive compensation mechanism of the traditional gate valve under a high-p