CN211779004U

CN211779004U - Low-noise sleeve single-seat regulating valve

Info

Publication number: CN211779004U
Application number: CN202020270392.4U
Authority: CN
Inventors: 盛波
Original assignee: Wiseway Shanghai Control Valve Co ltd
Current assignee: Kaidu (Shanghai) Fluid Technology Co., Ltd
Priority date: 2020-03-07
Filing date: 2020-03-07
Publication date: 2020-10-27
Anticipated expiration: 2030-03-07

Abstract

The utility model discloses a low-noise sleeve single-seat regulating valve, belonging to the technical field of pipeline valves, which comprises a valve body, a valve cover and an execution component; this application technical scheme is different from traditional case and telescopic assembly structure, connects the sealed tube of case in the dabber through a plurality of pairs of connecting plates, connects the dabber in the up-and-down motion of valve rod in order to control the sealed tube again, connects the cross screw rod between every pair of connecting plate, and after long-term the use, when the cooperation precision between the outer pipe wall of sealed tube and the sleeve inner wall drops, only need screw up every pair the cross screw rod between the connecting plate, drive two connecting plates each other and leave, cause the closing plate that links to each other with the connecting plate tip to buckle outwards, force the laminating of outer pipe wall of sealed tube towards the sleeve inner wall to improve cooperation precision, eliminate the produced noise of medium flow through assembly gap.

Description

Low-noise sleeve single-seat regulating valve

Technical Field

The utility model belongs to the technical field of the pipeline valve technique and specifically relates to a low noise sleeve list seat governing valve is related to.

Background

The regulating valve is also called a control valve, in the field of industrial automation process control, a final control element for changing process parameters such as medium flow, pressure, temperature, liquid level and the like is operated by power by receiving a control signal output by a regulating control unit, and the regulating valve is different in type according to different working requirements;

the existing sleeve type regulating valve mainly comprises a sleeve and a valve core, wherein the valve core is sleeved on an inner ring of the sleeve, and a window on the sleeve is opened or closed along with the up-and-down action of the valve core so as to achieve the function of regulating the medium flow; however, the valve core of the existing regulating valve is under the action of long-term unbalanced water pressure, and the matching precision between the valve core and the inner wall of the sleeve is gradually reduced, so that the closing is unreliable, and the water flow noise is high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a low noise sleeve list seat governing valve, it is different from traditional case and telescopic assembly structure, connects the sealed tube of case in the dabber through a plurality of pairs of connecting plates, connects the dabber again in the up-and-down motion of valve rod with the control sealed tube, connects the cross screw rod between every pair of connecting plate, after long-term the use, when the cooperation precision between the outer pipe wall of sealed tube and the sleeve inner wall drops, only need screw up every to each pair the cross screw rod between the connecting plate, drive two connecting plates each other and leave, cause the closing plate that links to each other with the connecting plate tip to outwards buckle, force the laminating of outer pipe wall of sealed tube towards sleeve inner wall to improve the cooperation precision, eliminate the produced noise of medium flow through assembly gap.

In order to solve the technical problems of unreliable opening and closing, short service life and high noise of the sleeve regulating valve in the prior art, the utility model provides a low-noise sleeve single-seat regulating valve, which comprises a valve body, a valve cover and an execution part;

the water inlet valve comprises a valve body, wherein a flow passage is formed in the valve body, a valve seat is arranged in the flow passage, and the flow passage is divided into a water inlet cavity and a water discharge cavity by the valve seat; the side wall of the valve body, which is opposite to the valve seat, is provided with a mounting hole, and the mounting hole is communicated with the water inlet cavity and the outer side of the valve body;

the valve cover covers the mounting hole;

the actuating component comprises a positioner, a valve rod, a sleeve and a valve core; the inner end of the sleeve is placed on the valve seat, the outer end of the sleeve is abutted against the valve cover, and a plurality of water inlet windows are formed in the side wall of the sleeve and along the circumference; the valve core comprises a mandrel and a sealing pipe; the mandrel is inserted into the sealing pipe and is coaxial with the sealing pipe, a plurality of pairs of connecting plates are uniformly distributed between the outer side wall of the mandrel and the inner wall of the sealing pipe along the circumferential direction, the plate surface of each connecting plate is perpendicular to the axial direction of the mandrel, and the sealing pipe is nested in the inner cavity of the sleeve; a cross screw is connected between each pair of the connecting plates, the thread end of the cross screw penetrates through one of the connecting plates and is stopped in the other connecting plate, and the two connecting plates are driven away from each other along with the tightening action of the cross screw; the positioner is mounted on the valve cover; the inner end of the valve rod penetrates through the valve cover and the mounting hole in sequence to be connected to the end portion of the mandrel, and the outer end of the valve rod is connected with the positioner.

Further, the utility model provides a pair of low noise sleeve list seat governing valve, wherein two seal ring grooves are seted up to the lateral wall of sealed tube, each seal ring inslot inlay and adorn the sealing ring, two seal ring groove set up respectively in the both ends of sealed tube, set up the seal ring groove at the sealed tube both ends under the closed condition, be located water inlet window's both sides respectively, will water inlet window surround wherein, can effectively improve closed reliability.

Furthermore, the utility model provides a low noise sleeve single seat governing valve, wherein, each pair of said connecting plates are respectively arranged at both ends of said sealed tube; this structure is considered when screwing up the cross screw, and the link of connecting plate and sealed tube is close to the tip more and is favorable to the sealed tube to outwards buckle deformation more, and the assembly precision promotes more obviously.

The utility model relates to a low noise sleeve list seat governing valve compares with prior art and has following advantage: on one hand, the sealing pipe is connected with the core shaft through a plurality of pairs of connecting plates, when the valve is opened, the upper end face and the lower end face of the valve core are filled with the medium, so that the upper end face of the valve core is uniformly stressed, the structure is different from the structure that the traditional medium only fills the lower end face of the valve core, the structural design is more reasonable, and the service life is longer; on the other hand, after the assembly precision of the outer pipe surface of the sealing pipe and the inner wall of the sleeve is reduced, the cross screw can be screwed down manually, the pipe wall of the sealing pipe is bent outwards, the outer pipe surface of the sealing pipe is forced to be attached to the inner wall of the sleeve, the assembly precision is improved, and the noise generated when a medium flows through an assembly gap is eliminated.

Drawings

FIG. 1 is a schematic view of a cross-sectional structure of a low-noise sleeve single-seat regulating valve of the present invention;

FIG. 2 is a schematic view of the valve core and sleeve assembly structure of a low-noise sleeve single-seat regulating valve of the present invention;

FIG. 3 is a schematic diagram of the exploded structure of FIG. 2;

FIG. 4 is a schematic view of a valve core structure of a low noise sleeve single seat regulating valve of the present invention;

fig. 5 is a schematic diagram of the structure of the low-noise sleeve single-seat regulating valve with the variable state of the valve element.

Wherein: 1. a valve body; 2. a valve cover; 3. an execution component; 4. a flow channel; 5. a valve seat; 6. a water inlet cavity; 7. a drainage cavity; 8. mounting holes; 9. a positioner; 10. a valve stem; 11. a sleeve; 12. a valve core; 13. a water inlet window; 14. a mandrel; 15. a sealing tube; 16. a connecting plate; 17. a cross screw; 18. sealing the ring groove; 19. and (4) a sealing ring.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative efforts belong to the protection scope of the present invention;

it should be noted that, in the description of the present invention, it is to be noted that the terms "inside", "outside", "upper", "lower", "both sides", "one end", "the other end" and the like indicate the orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or the element to be referred must have a specific orientation, be constructed in a specific orientation and be operated, and thus, should not be construed as limiting the present invention.

As shown in fig. 1 to 5, the embodiment provides a low-noise sleeve single-seat regulating valve, which includes a valve body 1, a valve cover 2 and an actuating component 3; a flow passage 4 is formed in the valve body 1, a valve seat 5 is arranged in the flow passage 4, and the flow passage 4 is divided into a water inlet cavity 6 and a water drainage cavity 7 by the valve seat 5; a mounting hole 8 is formed in the side wall of the valve body 1, which is opposite to the valve seat 5, and the mounting hole 8 is communicated with the water inlet cavity 6 and the outer side of the valve body 1; the valve cover 2 covers the mounting hole 8;

the actuating component 3 comprises a positioner 9, a valve rod 10, a sleeve 11 and a valve core 12; the inner end of the sleeve 11 is placed on the valve seat 5, the outer end of the sleeve 11 is abutted against the valve cover 2, and a plurality of water inlet windows 13 are formed in the side wall of the sleeve 11 and along the circumference; the valve core 12 comprises a mandrel 14 and a sealing tube 15; the mandrel 14 is inserted into the sealing tube 15 and is coaxial with the

sealing tube

15, 3 pairs of connecting plates 16 are uniformly distributed between the outer side wall of the mandrel 14 and the inner wall of the sealing tube 15 along the circumferential direction, the plate surface of each connecting plate 16 is perpendicular to the axial direction of the mandrel 14, and the sealing tube 15 is nested in the inner cavity of the sleeve 11; a cross screw 17 is connected between each pair of the connecting plates 16, the thread end of the cross screw 17 penetrates through one of the connecting plates 16 and is stopped in the other connecting plate 16, and the two connecting plates 16 are driven away from each other along with the tightening action of the cross screw 17; the positioner 9 is mounted on the valve cover 2; the inner end of the valve rod 10 sequentially penetrates through the valve cover 2 and the mounting hole 8 to be connected to the end part of the mandrel 14, and the outer end of the valve rod 10 is connected with the positioner 9;

the outer side wall of the sealing pipe 15 is provided with two sealing ring grooves 18, a sealing ring 19 is embedded in each sealing ring groove 18, the two sealing ring grooves 18 are respectively arranged at two ends of the sealing pipe 15, the sealing ring grooves 18 arranged at two ends of the sealing pipe 15 are respectively positioned at two sides of the water inlet window 13 in a closed state, and the water inlet window 13 is surrounded in the sealing ring grooves, so that the closing reliability can be effectively improved;

each pair of the connecting plates 16 is respectively arranged at two ends of the sealing tube 15; this structure is considered when screwing up cross screw 17, and the connecting end of connecting plate 16 and sealed tube 15 is close to the tip more and is favorable to sealed tube 15 to outwards buckle deformation more, and the assembly precision promotes more obviously.

The working process and principle are as follows: when the regulating valve is in a closed state, the positioner 9 presses the valve core 12 to the lowest position through the valve rod 10, at the moment, the outer side wall of the sealing tube 15 completely blocks all the water inlet windows 13, when the regulation is needed to stop circulation, the positioner 9 drives the valve core 12 to slide upwards along the inner wall of the sleeve 11 through the valve rod 10 until the lower end face of the sealing tube 15 gradually moves upwards to pass through the water inlet windows 13 to conduct the inner side and the outer side of the sleeve 11, in the process, the outer wall of the sealing tube 15 is always tightly attached to the inner wall of the sleeve 11, after long-term use, as a medium can flow into the inner side of the sleeve 11 through the water inlet windows 13 in the opening process of the sealing tube 15, the outer wall of the sealing tube 15 bears a large acting force at the moment, so that the attachment degree between the outer wall of the sealing tube 15 and the inner wall of the sleeve 11 is reduced, when the sealing tube 15 is closed, due to, the medium leaks through the gap to generate larger noise; at the moment, the cross screw 17 on the connecting plates 16 is screwed up manually to forcibly drive each pair of connecting plates 16 away from each other, so that the sealing pipes 15 at the two ends are forced to bend outwards, namely the outer pipe walls of the sealing pipes 15 are forced to be attached to the inner wall of the sleeve 11, the gap generated by long-term stress is eliminated, and the assembling precision between the sealing pipes and the sleeve is obviously improved.

The details of the present invention are well known to those skilled in the art.

Finally, it is to be noted that: the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting, and although the present invention has been described in detail with reference to the examples, it should be understood by those skilled in the art that the technical solutions of the present invention can be modified and replaced with equivalents without departing from the spirit and scope of the technical solutions of the present invention, which should be covered by the scope of the claims of the present invention.

Claims

1. A low-noise sleeve single-seat regulating valve is characterized by comprising a valve body, a valve cover and an execution component;

the valve cover covers the mounting hole;

2. The low noise sleeve single seat regulating valve according to claim 1, wherein two sealing ring grooves are formed in the outer side wall of the sealing tube, a sealing ring is embedded in each sealing ring groove, and the two sealing ring grooves are respectively formed in both ends of the sealing tube.

3. The low noise sleeve single seat regulator valve according to claim 1, wherein each pair of said connecting plates are respectively disposed at both ends of said sealing tube.