CN210716025U

CN210716025U - Pneumatic regulating valve for Y-shaped discharging

Info

Publication number: CN210716025U
Application number: CN201921858387.9U
Authority: CN
Inventors: 蒋唐锦; 蔡加潮; 张翼韬
Original assignee: Hangzhou Liangsheng Electric Co Ltd
Current assignee: Hangzhou Liangsheng Electric Co Ltd
Priority date: 2019-10-31
Filing date: 2019-10-31
Publication date: 2020-06-09
Anticipated expiration: 2029-10-31

Abstract

The utility model relates to a Y type is unloaded and is used pneumatic control valve, including valve body, disk seat, case subassembly, the case subassembly includes the valve rod and sets up the case in valve rod one end, and the other end of valve rod passes the valve gap and is connected with actuating mechanism, and the case adopts intermediate layer soft seal structure, is provided with the direction sealing member that supplies the valve rod to pass in the valve body, is provided with the filler between valve gap and the valve rod, is provided with the cavity between the tip of gland and the valve rod, packs the filler in the cavity, and the tip of cavity passes through the fixed filler. The utility model discloses the case adopts soft seal structure, and it is little to let out leakage quantity, and the valve gap adopts bellows and filler seal, is difficult for producing the seepage, and the valve body uses the bush to keep warm outward, but the preventive media precooling condenses, guarantees case sealing performance, helps the stable system operation, has the action sensitivity, stable in structure, and the leakproofness advantage such as good, the wide application is to the operating mode of the various differences of gas and liquid medium in various industrial equipment.

Description

Pneumatic regulating valve for Y-shaped discharging

Technical Field

The utility model belongs to the technical field of the valve, concretely relates to Y type is unloaded and is used pneumatic control valve.

Background

At present, a valve core of a pneumatic regulating valve for discharging in the market mostly adopts a hard sealing structure, and the valve core arranged in the structure has large leakage amount, so that the integral service life of a product is influenced; the existing valve body is exposed outside more, the heat preservation performance is poor, the phenomenon of medium precooling and condensation is easy to occur, so that the stability of system operation is reduced, the sealing performance is poor, the existing medium leakage is difficult to observe, the problem cannot be found in time, and the subsequent operation is influenced.

SUMMERY OF THE UTILITY MODEL

To the problem that exists among the prior art, the utility model aims to provide a pneumatic control valve is used to Y type is unloaded, and this governing valve adopts cylinder type actuating mechanism to be the power supply, and the control valve core position changes the pressure differential and the flow at both ends, makes behind the valve pressure stable.

The utility model discloses a following technical scheme realizes:

the Y-shaped pneumatic regulating valve for discharging comprises a valve body, a valve seat and a valve core assembly, wherein the valve seat and the valve core assembly are arranged in the valve body, the valve core assembly comprises a valve rod and a valve core arranged at one end of the valve rod, the other end of the valve rod penetrates through a valve cover to be connected with an executing mechanism, and the Y-shaped pneumatic regulating valve is characterized in that the valve core adopts an interlayer soft sealing structure, a guide sealing element for the valve rod to penetrate through is arranged in the valve body, a cavity is arranged between the end part of the valve cover and the valve rod, filling materials are filled in the cavity, and.

The Y-shaped pneumatic regulating valve for discharging is characterized in that the interlayer soft sealing structure is a soft sealing layer made of PTFE or PPL materials and arranged at one end of the valve core.

The Y-shaped pneumatic regulating valve for discharging is characterized in that the section of the guide sealing piece is in a right-angle trapezoid shape, and an O-shaped sealing ring is arranged between the guide sealing piece and the valve body.

The Y-shaped pneumatic regulating valve for discharging is characterized in that a lining component with a heat preservation function is sleeved outside the valve body in an sleeved mode.

The Y-shaped pneumatic regulating valve for discharging is characterized in that a leakage detecting hole is formed in the lower end face of the valve cover, and a screw is connected to the leakage detecting hole in a threaded mode.

The pneumatic regulating valve for Y-shaped discharging is characterized in that a corrugated pipe is sleeved on a valve rod between a valve core and a guide sealing piece.

Compared with the prior art, the utility model, following beneficial effect has:

1) the valve core adopts a soft sealing structure, so that the leakage amount is small;

2) the valve body is insulated by adopting the bushing, so that precooling and condensation of a medium can be prevented, and the sealing performance of the valve core is ensured;

3) the corrugated pipe and the filler are adopted for sealing, so that the sealing performance is further ensured, and the leakage is not easy to generate;

4) the regulating valve has high valve body strength and can be flexibly applied to various media, calibers, pressures and connection modes.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

in the figure, 1-valve body, 2-valve seat, 3-valve rod, 4-valve core, 5-valve cover, 6-actuator, 7-guide sealing element, 8-packing, 9-packing gland, 10-soft sealing layer, 11-O-shaped sealing ring, 12-lining part, 13-leakage detecting hole, 14-screw and 15-corrugated pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings, and specific embodiments will be given.

As shown in fig. 1, the utility model relates to a pneumatic control valve is used to Y type of unloading, including valve body, disk seat, the case subassembly of setting in the valve body, this case subassembly includes the valve rod and sets up the case in valve rod one end, and the other end of valve rod passes the valve gap and is connected with actuating mechanism, and this actuating mechanism adopts cylinder type actuating mechanism, and its concrete structure is prior art, no longer detailed description.

For realizing better sealed effect, the case adopts the soft seal structure of intermediate layer, and the soft seal structure of intermediate layer is provided with the soft sealing layer of PTFE or PPL material for the one end at the case, is provided with the direction sealing member that supplies the valve rod to pass in the valve body, and this direction sealing member cross-section is right angle trapezoidal form, is provided with O type sealing washer between direction sealing member and the valve body. A cavity is arranged between the end part of the valve cover and the valve rod, the cavity is filled with filler, and the filler is fixed at the end part of the cavity through a filler gland. In order to realize heat preservation and avoid medium precooling and condensation, the valve body is sleeved with a bushing component with a heat preservation function. In order to prevent the leakage of materials and gas lamp media from the valve core position to the valve cover position, the valve rod between the valve core and the guide sealing piece is sleeved with the corrugated pipe, in order to conveniently check whether the leakage exists, the lower end face of the valve cover is provided with a leakage detection hole, and the leakage detection hole is connected with a screw thread.

The utility model discloses theory of operation, actuating mechanism accept external control signal and get into the cylinder through signal interface, and pressure signal produces the effort on the piston, makes the valve rod produce the displacement, drives the action of case part, produces corresponding displacement with the disk seat, and signal pressure is big more, and thrust is big more, and case part and disk seat relative displacement are little, otherwise big more. When the valve rod moves downwards, the spring is compressed, and when the thrust of the piston and the reaction force of the spring are balanced, the valve core part stays at a certain position, so that a certain pressure signal corresponds to a certain valve opening degree, the flow of a medium entering the valve body is ensured, and the required working condition requirement is met.

Claims

1. The utility model provides a Y type is pneumatic control valve for unloading, includes valve body (1), sets up disk seat (2), the case subassembly in valve body (1), the case subassembly includes valve rod (3) and sets up case (4) in valve rod (3) one end, the other end of valve rod (3) passes valve gap (5) and is connected with actuating mechanism (6), its characterized in that case (4) adopt the soft seal structure of intermediate layer, be provided with direction sealing member (7) that supply valve rod (3) to pass in valve body (1), be provided with the cavity between the tip of valve gap (5) and valve rod (3), fill material (8) in the cavity, fixed filler (8) are passed through gland (9) to the tip of cavity.

2. A pneumatic regulating valve for Y-type discharging according to claim 1, characterized in that the soft sealing structure of the interlayer is a soft sealing layer (10) made of PTFE or PPL material and provided at one end of the valve core (4).

3. A pneumatic regulating valve for Y-shaped discharge according to claim 1, characterized in that the cross section of said guiding seal member (7) is in the shape of a right trapezoid, and an O-ring (11) is provided between said guiding seal member (7) and the valve body (1).

4. A Y-type pneumatic regulating valve for discharging according to claim 1, characterized in that a bushing member (12) having a heat insulating function is externally sleeved on the valve body (1).

5. A pneumatic adjusting valve for Y-type discharging as defined in claim 1, wherein the lower end surface of said valve cover (5) is provided with a leakage detecting hole (13), and said leakage detecting hole (13) is screwed with a screw (14).

6. A pneumatic regulating valve for Y-shaped discharging as claimed in claim 1, wherein the valve stem (3) between the valve core (4) and the guiding sealing member (7) is sleeved with a bellows (15).