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CN-224208658-U - On-line cleaning type stop valve

CN224208658UCN 224208658 UCN224208658 UCN 224208658UCN-224208658-U

Abstract

The utility model discloses an on-line cleaning stop valve which comprises a valve body, a valve rod, a valve disc and a valve seat, wherein the valve rod is screwed on the valve body through a valve cover, the valve disc is arranged at the lower end of the valve rod, the valve seat is arranged on the valve body and matched with the sealing surface at the lower end of the valve disc, a cleaning guide rod is inserted in the valve rod in a sealing way, the cleaning guide rod can axially shift and rotate in the valve rod, the cleaning guide rod is downwards shifted and then is connected with the valve disc, a cleaning medium hole is axially formed in the cleaning guide rod, the upper end of the cleaning medium hole can be communicated with a medium joint, the lower end of the cleaning medium hole can be communicated with a cleaning medium outlet on the valve disc after the cleaning guide rod is downwards shifted, and the cleaning medium outlet faces the sealing surface of the valve seat. The on-line cleaning type stop valve can clean the sealing surface of the stop valve on line under the condition of not disassembling the stop valve or the valve cover.

Inventors

  • XU JUN
  • SHEN HONGJIN
  • NIU CHUN

Assignees

  • 东台市远洋船舶配件有限公司

Dates

Publication Date
20260508
Application Date
20250513

Claims (10)

  1. 1. An on-line cleaning stop valve comprises a valve body (1), a valve rod (15) which is screwed on the valve body (1) through a valve cover (14), a valve disc (6) which is arranged at the lower end of the valve rod (15) and a valve seat (2) which is arranged on the valve body (1) and matched with the sealing surface at the lower end of the valve disc (6), and is characterized in that a cleaning guide rod (12) is arranged in the valve rod (15) in a sealing way, the cleaning guide rod (12) can axially shift and rotate in the valve rod (15), the cleaning guide rod (12) is connected with the valve disc (6) after being downwardly shifted, a cleaning medium hole (13) is axially arranged in the cleaning guide rod (12), the upper end of the cleaning medium hole (13) can be communicated with a medium joint (18), the lower end of the cleaning medium hole (13) can be communicated with a cleaning medium outlet (3) on the valve disc (6) after the cleaning guide rod (12) is downwardly shifted, and the cleaning medium outlet (3) faces the sealing surface of the valve seat (2).
  2. 2. The on-line cleaning stop valve according to claim 1, wherein the lower end of the cleaning guide rod (12) extends out of the lower end of the valve rod (15) and is inserted into the valve disc (6), a connecting tenon (9) is arranged on the lower end face of the cleaning guide rod (12), a connecting tenon groove (7) corresponding to the connecting tenon (9) is arranged on the corresponding surface of the valve disc (6), and the cleaning guide rod (12) is inserted into the valve disc (6) through the connecting tenon (9) and the connecting tenon groove (7) after being shifted downwards.
  3. 3. The on-line clean shut-off valve according to claim 2, characterized in that the connecting groove (7) in the valve disk (6) is arranged on the upper end face of the valve disk tap (5), which valve disk tap (5) is screwed onto the valve disk (6) from the bottom of the valve disk (6).
  4. 4. The on-line cleaning stop valve according to claim 1, wherein a positioning bead (17) is mounted on the valve rod (15), and upper and lower positioning grooves (16) corresponding to the positioning bead (17) are arranged on the periphery of the cleaning guide rod (12), and the distance between the upper and lower positioning grooves (16) corresponds to the distance required by the up-and-down displacement of the cleaning guide rod (12).
  5. 5. An on-line clean shut-off valve according to claim 1, 2 or 4, characterized in that a drive handle (19) is provided at the upper end of the cleaning guide rod (12).
  6. 6. The on-line cleaning type stop valve according to claim 1, wherein the two ends of the cleaning medium hole (13) are closed, and radial holes (10) communicated with the cleaning medium hole (13) are respectively arranged at the two ends of the cleaning guide rod (12).
  7. 7. The on-line cleaning type stop valve according to claim 6, wherein the medium joint (18) is arranged on the outer peripheral surface of the overhanging end of the valve rod (15), the radial hole (10) at the upper end of the cleaning guide rod (12) is communicated with the medium joint (18) on the valve rod (15) after the cleaning guide rod (12) is downwards shifted, and the radial hole (10) at the upper end of the cleaning guide rod (12) after the cleaning guide rod is upwards shifted is positioned between two sealing rings (11) arranged between the cleaning guide rod (12) and the valve rod (15).
  8. 8. The on-line cleaning type stop valve according to claim 6, wherein the radial hole (10) at the lower end of the cleaning guide rod (12) is located above the connecting tenon (9), the radial hole (10) at the lower end of the cleaning guide rod (12) is located in the medium annular cavity (8) in the valve disc (6) after being downwardly displaced, and is communicated with the cleaning medium outlet (3) in the valve disc (6) through the communication hole (4) in the valve disc (6), and the radial hole (10) at the lower end of the cleaning guide rod (12) is located on the upper side of the sealing ring (11) arranged between the cleaning guide rod (12) and the valve disc (6).
  9. 9. The on-line clean shut-off valve of claim 1, wherein the media connector (18) is in communication with a source of pressurized cleaning media.
  10. 10. The on-line clean shut-off valve of claim 9 wherein the source of pressurized cleaning medium is a source of compressed air or a fluid pump.

Description

On-line cleaning type stop valve Technical Field The utility model relates to a valve, in particular to a stop valve which needs cleaning maintenance. Background The stop valve is characterized in that torque is applied to the valve rod, and pressure is applied to the valve disc in the axial direction by the valve rod, so that the sealing surface of the valve disc is tightly attached to the sealing surface of the valve seat, and liquid in the pipeline is prevented from leaking along a gap between the sealing surfaces, so that the liquid in the pipeline is stopped. The stop valve is widely applied in industries such as ships, sewage treatment, chemical industry and the like, and after the stop valve is used for a period of time, the phenomenon of loose sealing can occur, and particularly under the condition that liquid in a pipeline contains more impurities, greasy dirt and particles in the liquid can adhere to the sealing surfaces of the valve disc and the valve seat, so that the sealing surfaces of the valve disc and the valve seat cannot be tightly attached. In order to maintain the function of the stop valve, the stop valve in the use scene needs to be cleaned regularly or timely, the stop valve needs to be detached from the pipeline or the valve cover needs to be detached from the valve body during cleaning, so that the valve disc and the valve seat can be contacted for cleaning, the process workload is large, the use of the pipeline needs to be stopped, namely the production stopping maintenance is needed, but in the ship in the sailing process, the pipeline function cannot be easily stopped, and once the pipeline where the stop valve is closed is needed and cannot be reliably realized, the use of the pipeline where the stop valve is located can only be stopped for maintenance, and the normal sailing of the ship is influenced and a plurality of problems are brought. Disclosure of utility model Aiming at the defects existing in the prior art, the technical problem to be solved by the utility model is to provide an on-line cleaning type stop valve, which can clean the sealing surface of the stop valve on line under the condition of not disassembling the stop valve or a valve cover thereof. In order to solve the technical problems, the on-line cleaning stop valve comprises a valve body, a valve rod, a valve disc and a valve seat, wherein the valve rod is screwed on the valve body through a valve cover, the valve disc is arranged at the lower end of the valve rod, the valve seat is arranged on the valve body and matched with a sealing surface at the lower end of the valve disc, a cleaning guide rod is inserted in the valve rod in a sealing mode, can axially shift and rotate in the valve rod, is connected with the valve disc after being downwardly shifted, a cleaning medium hole is axially formed in the cleaning guide rod, the upper end of the cleaning medium hole can be communicated with a medium connector, the lower end of the cleaning medium hole can be communicated with a cleaning medium outlet on the valve disc after the cleaning guide rod is downwardly shifted, and the cleaning medium outlet faces the sealing surface of the valve seat. In the above structure, since the cleaning guide rod is inserted in the valve rod in a sealing way, the cleaning guide rod can axially shift in the valve rod and can rotate, and the cleaning guide rod is connected with the valve disc after being downwardly shifted, so that the cleaning guide rod which can be vertically shifted in the valve rod can be downwardly shifted when the valve is required to be cleaned, the cleaning guide rod is connected with the valve disc, the valve disc is driven to rotate together when the cleaning guide rod is rotated, the sealing surface of the valve disc is positioned close to or slightly contacted with the sealing surface of the valve seat, the valve disc and the valve seat can be relatively rotated by rotating the cleaning guide rod, sundries and particles adhered on the sealing surface of the valve disc and the sealing surface of the valve seat can be loosened by rotating and rubbing the valve disc, and accordingly the adhered sealing surface is separated, and a corresponding cleaning effect is achieved. The cleaning guide rod is internally provided with a cleaning medium hole along the axial direction, the upper end of the cleaning medium hole can be communicated with the medium joint, the lower end of the cleaning medium hole can be communicated with the cleaning medium outlet on the valve disc after the cleaning guide rod is downwards shifted, the cleaning medium outlet faces the sealing surface of the valve seat, so that the cleaning medium can enter the cleaning medium hole from the medium joint, is led to the cleaning medium outlet on the valve disc through the cleaning medium hole after the cleaning guide rod is downwards shifted, and is emitted to the sealing surface direction of the valve seat from the cleaning medium outlet a