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CN-224214720-U - Stop valve

CN224214720UCN 224214720 UCN224214720 UCN 224214720UCN-224214720-U

Abstract

The utility model relates to the technical field of valves, in particular to a stop valve. A stop valve comprises a valve body assembly, a valve core assembly and a static valve core, wherein a valve port is arranged in the valve body assembly, the valve core assembly and the static valve core are arranged in a valve pipe of the valve body assembly, the static valve core is arranged at the valve port and provided with a communication hole communicated with the valve port, the valve core assembly is arranged on the static valve core, the valve core assembly can rotate to block or open the communication hole, the stop valve further comprises a positioning assembly which is sleeved outside the valve core assembly and arranged in the valve pipe, the outer wall of the positioning assembly is abutted with the inner wall of the valve pipe, and the inner wall of the positioning assembly is abutted with the valve core assembly. The utility model has the advantages that the valve core assembly can be limited, so that the valve core assembly is prevented from deflecting in the long-term use process, and the stop valve is prevented from internal leakage.

Inventors

  • FENG GUANGHUA
  • ZHOU FENG
  • LOU FENG
  • GUAN XIANGYU

Assignees

  • 浙江盾安禾田金属有限公司

Dates

Publication Date
20260508
Application Date
20250515

Claims (10)

  1. 1. The utility model provides a stop valve, includes valve body subassembly (10), case subassembly (60) and quiet case (40), valve body subassembly (10) are interior to have valve port (11), case subassembly (60) and quiet case (40) are located in valve body subassembly (10) valve pipe (12), quiet case (40) are located valve port (11) department and offered with communication hole (41) of valve port (11) intercommunication, case subassembly (60) are located on quiet case (40), case subassembly (60) can rotate in order to shutoff or open communication hole (41); The stop valve is characterized by further comprising a positioning assembly (50), wherein the positioning assembly (50) is sleeved outside the valve core assembly (60) and is arranged in the valve pipe (12), the outer wall of the positioning assembly (50) is abutted to the inner wall of the valve pipe (12), and the inner wall of the positioning assembly (50) is abutted to the valve core assembly (60).
  2. 2. The shut-off valve according to claim 1, wherein the valve core assembly (60) comprises a valve stem (20), the positioning assembly (50) comprises a fixed seat (52) and a bearing (53), an inner wall of the bearing (53) is abutted against the valve stem (20), and an outer wall of the bearing (53) is abutted against the fixed seat (52).
  3. 3. The stop valve according to claim 1, wherein the positioning assembly (50) comprises a fixed seat (52), the valve core assembly (60) comprises a valve rod (20), the valve rod (20) is arranged in the fixed seat (52) in a penetrating mode, a contact portion (24) is arranged on the outer wall of the valve rod (20), the contact portion (24) protrudes relative to the outer wall of the valve rod (20), and the inner wall of the fixed seat (52) is abutted to the contact portion (24).
  4. 4. The stop valve according to claim 1, wherein the positioning assembly (50) comprises a fixed seat (52) and a thrust piece (55), the fixed seat (52) is arranged on the thrust piece (55) and is abutted against the thrust piece (55), the valve core assembly (60) comprises a valve rod (20), the valve rod (20) sequentially penetrates through the fixed seat (52) and the thrust piece (55), and the valve rod (20) is in clearance fit with the inner wall of the fixed seat (52) and is at least partially abutted against the inner wall of the thrust piece (55).
  5. 5. The stop valve according to any one of claims 2-4, wherein the positioning assembly (50) further comprises a retainer ring (51), the retainer ring (51) is disposed at one end of the fixing seat (52) away from the static valve core (40) and is abutted to the fixing seat (52), an opening (121) is disposed at one end of the valve tube (12), and the retainer ring (51) is disposed at the opening (121) and is connected to the valve tube (12).
  6. 6. The stop valve according to claim 5, wherein an end of the retainer ring (51) near the static valve core (40) extends toward the static valve core (40) to form a first stop portion (512), and an inner wall of the first stop portion (512) abuts against at least part of an outer wall of the fixed seat (52).
  7. 7. The stop valve according to claim 5, wherein a containing groove (511) is formed in one end of the retainer ring (51) facing the static valve core (40), a spring piece (54) is arranged in the containing groove (511), a protrusion (521) is arranged on the end face of the fixing seat (52) away from the static valve core (40), the protrusion (521) stretches into an inner ring of the spring piece (54), when the retainer ring (51) presses the spring piece (54), the side wall of the containing groove (511) presses the spring piece (54), so that the spring piece (54) abuts against the protrusion (521) and applies elastic force to the fixing seat (52) close to a central axis of the valve rod (20).
  8. 8. The shut-off valve according to any one of claims 2 to 4, wherein one end of the fixed seat (52) extends towards the static valve core (40) to form a second stop portion (522), the positioning assembly (50) comprises a thrust piece (55), the thrust piece (55) is disposed at one end of the fixed seat (52) close to the static valve core (40) and abuts against the fixed seat (52), and an inner wall of the second stop portion (522) abuts against at least part of an outer wall of the thrust piece (55).
  9. 9. The shut-off valve according to claim 1, wherein the positioning assembly (50) and the valve port (11) are arranged concentrically, and the static valve core (40) and the valve port (11) are arranged concentrically.
  10. 10. The stop valve according to claim 1, wherein the valve body assembly (10) further comprises a housing cover (14), the housing cover (14) is covered on the valve pipe (12) and fixedly connected with the valve pipe (12), a mounting plate (143) is arranged in the housing cover (14), a limit groove (144) is formed in the side surface, facing the valve core assembly (60), of the mounting plate (143), and one end of the valve core assembly (60) extends into the limit groove (144) and is abutted to the groove wall of the limit groove (144).

Description

Stop valve Technical Field The utility model relates to the technical field of valves, in particular to a stop valve. Background Shut-off valves are commonly used in pipeline systems for shutting off the pipeline system. The stop valve generally comprises a valve body, a valve core component and a static valve core, wherein the static valve core is arranged at the valve port and is communicated with the valve port through a communication hole, the communication hole can be plugged by rotating the valve core component, so that the valve port is plugged, and when a pipeline system needs to be communicated, the valve core component is rotated, so that the communication hole is opened, and the stop valve is closed or opened. In the related art, when the stop valve is used for a long time, the valve core assembly is easy to deflect, so that a certain inclination angle is formed between the axis of the valve core assembly and the axis of the static valve core, the valve core assembly and the static valve core cannot be completely attached, and internal leakage of the stop valve is caused. Disclosure of utility model In view of the above, it is desirable to provide a shut-off valve that reduces the possibility of deflection of the spool assembly to prevent internal leakage of the shut-off valve. The utility model provides a stop valve which comprises a valve body assembly, a valve core assembly and a static valve core, wherein a valve port is arranged in the valve body assembly, the valve core assembly and the static valve core are arranged in a valve pipe of the valve body assembly, the static valve core is arranged at the valve port and is provided with a communication hole communicated with the valve port, the valve core assembly is arranged on the static valve core, the valve core assembly can rotate to block or open the communication hole, the stop valve further comprises a positioning assembly, the positioning assembly is sleeved outside the valve core assembly and is arranged in the valve pipe, the outer wall of the positioning assembly is in butt joint with the inner wall of the valve pipe, and the inner wall of the positioning assembly is in butt joint with the valve core assembly. So set up, fix a position and spacing to the case subassembly, prevent that the case subassembly from taking place the skew and leading to the case subassembly unable laminating completely in quiet case to prevent that the stop valve from leaking in taking place. In one embodiment, the valve core assembly comprises a valve rod, the positioning assembly comprises a fixed seat and a bearing, the inner wall of the bearing is abutted to the valve rod, and the outer wall of the bearing is abutted to the fixed seat. By means of the arrangement, the bearing is in contact with the valve rod, and friction force during rotation of the valve rod can be reduced. In one embodiment, the positioning assembly comprises a fixed seat, the valve core assembly comprises a valve rod, the valve rod penetrates through the fixed seat, a contact portion is arranged on the outer wall of the valve rod, the contact portion protrudes relative to the outer wall of the valve rod, and the inner wall of the fixed seat is in butt joint with the contact portion. So set up, the fixing base plays the locate action to the butt of contact portion to the valve rod. In one embodiment, the positioning assembly comprises a fixed seat and a thrust piece, the fixed seat is arranged on the thrust piece and is in butt joint with the thrust piece, the valve core assembly comprises a valve rod, the valve rod sequentially penetrates through the fixed seat and the thrust piece, and the valve rod is in clearance fit with the inner wall of the fixed seat and is in butt joint with at least part of the inner wall of the thrust piece. By the arrangement, friction force generated when the valve rod rotates can be reduced, and the valve rod can be positioned. In one embodiment, the positioning assembly further comprises a retainer ring, the retainer ring is arranged at one end of the fixed seat away from the static valve core and is abutted to the fixed seat, one end of the valve pipe is provided with an opening, and the retainer ring is arranged at the opening and is connected with the valve pipe. It is understood that the retainer ring is used for limiting the fixing seat. In one embodiment, one end of the retainer ring, which is close to the static valve core, extends towards the static valve core to form a first stop portion, and an inner wall of the first stop portion abuts against at least part of an outer wall of the fixing seat. So arranged that, in this way, the check ring is limited to the valve rod through the fixing seat. In one embodiment, the retaining ring faces one end of the static valve core and is provided with a containing groove, an elastic piece is arranged in the containing groove, the end face of the fixed seat, which is far away from the static valve core, is