Search

CN-224229306-U - High-pressure ball valve with self-sealing function

CN224229306UCN 224229306 UCN224229306 UCN 224229306UCN-224229306-U

Abstract

The utility model relates to a high-pressure ball valve with a self-sealing function, and belongs to the technical field of high-pressure ball valve sealing. The high-pressure ball valve with the self-sealing function comprises a valve body, a valve ball, a fixed valve rod, a water outlet pipe, a water inlet pipe and a sealing lantern ring, wherein one end of the second plug is attached with a fixed disc, the valve ball, the sealing lantern ring, the first plug, the second plug and the fixed disc are respectively provided with a water channel, when the water channels of the valve ball and a pipeline are positioned in a coaxial line with the valve body, a channel capable of enabling liquid or gas to flow is formed in the valve body, the liquid or gas can pass through the valve ball, when the valve ball rotates, the side surface of the valve ball can block the internal channel of the valve body, two sides of the valve ball are sealed through the sealing lantern ring, water flow is intercepted by the outer wall of the valve ball, and through the integrated structure of the valve body, the gap assembled by the valve body is reduced, the leakage risk is reduced, a plurality of parts in the interior can be poured out after the fixed disc is disassembled, the subsequent maintenance and management are convenient, and the working efficiency is improved.

Inventors

  • ZHOU WEI
  • WANG HONGBO

Assignees

  • 江苏成达阀门配件有限公司

Dates

Publication Date
20260512
Application Date
20250604

Claims (8)

  1. 1. The high-pressure ball valve with the self-sealing function is characterized by comprising a valve body (100), wherein a water outlet pipe (101) and a water inlet pipe (102) are arranged in the valve body (100), the water inlet pipe (102) is positioned at one side of the water outlet pipe (101), and the water outlet pipe (101) and the water inlet pipe (102) are communicated with each other; The valve ball (200) is movably arranged in the water inlet pipe (102), sealing lantern rings (300) are attached to two sides of the valve ball (200), a first plug (400) is attached to one side of one sealing lantern ring (300), a second plug (500) is attached to one side of the other sealing lantern ring (300), and a fixed disc (600) is attached to one end of the second plug (500); A fixed valve stem (800) is provided on the valve body (100) and above the valve ball (200).
  2. 2. The high-pressure ball valve with self-sealing function according to claim 1, wherein the inner diameter of the water outlet pipe (101) is smaller than the inner diameter of the water inlet pipe (102), one end of the first plug (400) is located inside the water inlet pipe (102), and one end of the first plug (400) is inserted inside the water outlet pipe (101).
  3. 3. The high-pressure ball valve with self-sealing function according to claim 1, wherein the inside of the two sealing collars (300) is semi-arc-shaped, and one side of the two sealing collars (300) close to each other is attached to the outer wall of the valve ball (200).
  4. 4. A high pressure ball valve with self-sealing function according to claim 3, characterized in that both sealing collars (300) are located inside the water inlet pipe (102) and slide, and the surfaces of both sealing collars (300) are provided with annular grooves.
  5. 5. The high-pressure ball valve with the self-sealing function according to claim 1, wherein one end of the fixed disc (600) is fixedly connected with the valve body (100) through a bolt, and one end of the fixed disc (600) extends to the inside of the water inlet pipe (102) and is attached to one end of the second plug (500).
  6. 6. The high-pressure ball valve with self-sealing function according to claim 5, wherein one end of the fixed disc (600) is in the same horizontal line with one side outer wall of the valve body (100), and a sealing ring (700) is embedded in one end of the valve body (100) and one end surface of the fixed disc (600).
  7. 7. The high-pressure ball valve with the self-sealing function according to claim 1, wherein a limit post (103) is fixedly connected to the inner wall of the valve body (100), and one end of the limit post (103) is inserted into the valve ball (200).
  8. 8. The high-pressure ball valve with the self-sealing function according to claim 1, wherein a sealing gasket (801) is arranged below the fixed valve rod (800), a sealing sleeve (802) is attached below the sealing gasket (801), and the sealing gasket (801) and the sealing sleeve (802) are both sleeved on the surface of the valve rod.

Description

High-pressure ball valve with self-sealing function Technical Field The utility model relates to the technical field of high-pressure ball valve sealing, in particular to a high-pressure ball valve with a self-sealing function. Background The high-pressure ball valve is a key control element for realizing fluid on-off or flow regulation through a rotary sphere, and the core structure of the high-pressure ball valve consists of a valve body, a sphere, a valve rod and a sealing element. The ball body can rotate 90 degrees around the axis of the valve rod to finish the switching action, and the valve has the remarkable advantages of small fluid resistance, reliable sealing, flexible operation and the like. The valve can bear the pressure grade as high as Class 2500 (about 172 bar), is suitable for a high-pressure pipeline system, ensures zero leakage sealing under the environment of high pressure difference, high temperature or corrosive medium by a bidirectional sealing design, a metal/elastic sealing structure and an automatic pressure relief function, supports various driving modes such as manual driving, pneumatic driving, electric driving and the like, and is rapid in switching and easy to realize remote automatic control. The valve body is made of various materials (such as stainless steel and alloy steel), and the sealing element is made of corrosion-resistant materials such as polytetrafluoroethylene and the like, so that the valve body can cope with severe media such as acid, alkali, oxygen and the like. The upper-mounting type structure design allows on-line maintenance, reduces the downtime, and reduces the maintenance cost due to the detachable replacement of the sealing ring. When the design of current high-pressure ball valve, in order to make things convenient for the change of ball valve, general whole valve body design is more than two, wraps up the ball valve by two valve bodies respectively, needs to install the sealing ring in the position of joint seam, because the valve body interface department is very near from the ball valve position, in the high-pressure environment, the junction of two valve bodies is become flexible easily, leads to leaking of liquid or gas, and the bolt of two valve body junction exposes in the outside, also is corroded easily, is difficult to open when leading to the maintenance, in use has inconvenience. Disclosure of utility model Based on this, it is necessary to provide a high-pressure ball valve with self-sealing function, which is difficult to open during maintenance and inconvenient in use because the joint of two valve bodies is easily loosened to cause leakage of liquid or gas in a high-pressure environment and the bolt at the joint of two valve bodies is exposed to the outside and is easily corroded. The high-pressure ball valve with the self-sealing function comprises a valve body, wherein a water outlet pipe and a water inlet pipe are arranged in the valve body, the water inlet pipe is positioned at one side of the water outlet pipe, and the water outlet pipe and the water inlet pipe are communicated with each other; The valve ball is movably arranged in the water inlet pipe, sealing lantern rings are attached to two sides of the valve ball, a first plug is attached to one side of one sealing lantern ring, a second plug is attached to one side of the other sealing lantern ring, and a fixed disc is attached to one end of the second plug; and the fixed valve rod is arranged on the valve body and is positioned above the valve ball. In one embodiment, the inner diameter of the water outlet pipe is smaller than the inner diameter of the water inlet pipe, one end of the first plug is located inside the water inlet pipe, and one end of the first plug is inserted inside the water outlet pipe. In one embodiment, the two sealing collars are semi-arc-shaped, and one sides of the two sealing collars, which are close to each other, are attached to the outer wall of the valve ball. In one embodiment, the two sealing lantern rings are both positioned in the water inlet pipe to slide, and the surfaces of the two sealing lantern rings are both provided with annular grooves. In one embodiment, one end of the fixed disc is fixedly connected with the valve body through a bolt, and one end of the fixed disc extends to the inside of the water inlet pipe and is attached to one end of the second plug. In one embodiment, one end of the fixed disc and one side outer wall of the valve body are positioned on the same horizontal line, and a sealing ring is embedded into one end of the valve body and one end surface of the fixed disc. In one embodiment, a limit post is fixedly connected to the inner wall of the valve body, and one end of the limit post is inserted into the valve ball. In one embodiment, a sealing gasket is arranged below the fixed valve rod, a sealing sleeve is attached to the lower portion of the sealing gasket, and the sealing gasket and the sealing sleeve are bo