CN209557774U - A kind of regulating valve of novel TFE sylphon seal - Google Patents

Abstract

The utility model discloses a kind of regulating valve of novel TFE sylphon seal, the valve deck including valve body and body top, lower valve rod is arranged with sealing ring with frame bottom junction outside lower valve rod by being pierced by insertion valve body below bracket；Valve inner is provided with stream cover, in lower valve rod insertion stream cover, limit base is provided with outside spool, lower valve rod is external to be arranged with TFE seal pipe between valve deck and limit base, TFE seal pipe is in continuous ripple struction from top to bottom, TFE seal pipe upper end is connected to valve deck bottom, and lower end is connected at the top of limit base.The utility model is arranged with the TFE seal pipe of ripple struction in lower valve rod bottom, the characteristic stretched using the ripple struction of TFE seal pipe with lower valve rod, dynamic sealing at traditional valve rod is converted to the quiet sealing stretched with bellows, the deformability of TFE seal pipe itself and distinguished ageing resistance greatly increase the service life of regulating valve simultaneously, it can be recycled for 100,000 times, to effectively prevent the generation of leakage.

Description

A kind of regulating valve of novel TFE sylphon seal

Technical field

The utility model relates to regulating valve field, specially a kind of regulating valve of novel TFE sylphon seal.

Background technique

Regulating valve also known as control valve, in industrial automation process control field, by receiving regulation unit output Control signal, the final control element for changing rate-of flow, pressure, temperature, the technological parameters such as liquid level is removed by power operation. Generally it is made of executing agency and valve.If pressing stroke feature, regulating valve can be divided into Direct Travel and angle stroke；Match by it and holds The power that row mechanism uses can be divided into pneumatic control valve, electric control valve, three kinds of hydraulic adjusting valve；By its function and characteristic It is divided into linear characteristic, equal percentage characteristics and three kinds of parabolic characteristic.Regulating valve is suitable for empty gas and water, steam, various corrosivity The media such as medium, mud, oil product.Regulating valve common classification: pneumatic control valve, electric control valve, hydraulic adjusting valve, self-operated type tune Save valve.

Current existing hydraulic adjusting valve is straight travel regulating valve, this kind of regulating valve is with can be by one when valve rod moves up and down Certain media takes at sealing, belongs to dynamic sealing, is if things go on like this easy to cause dielectric leakage, destroys sealing effect, and consequence is tight Weight.

Summary of the invention

The purpose of this utility model is to provide a kind of regulating valves of novel TFE sylphon seal, to solve above-mentioned background The problem of being proposed in technology.

To achieve the above object, the utility model provides the following technical solutions: a kind of adjusting of novel TFE sylphon seal Valve, the valve deck including valve body and body top are equipped with bracket above valve deck, in bracket by connector be connected with upper valve rod with Lower valve rod, upper valve rod are placed in above bracket and connect with axle sleeve, and lower valve rod below bracket by being pierced by insertion valve body, outside lower valve rod Sealing ring is arranged with frame bottom junction；

Valve inner is provided with stream cover, and valve body two sides are respectively arranged with inlet and outlet, and the insertion of lower valve rod lower end is flowed in cover, Lower valve rod bottom is connect with spool, is provided with limit base outside spool, and limit base is symmetrical in spool two sides by two The structure that communicates, spool are pierced by " Contraband " type frame composition by limit base bottom up and down, lower valve rod be external to valve deck and limit base it Between be arranged with TFE seal pipe, TFE seal pipe is in from top to bottom continuous ripple struction, TFE seal pipe upper end are connected to valve deck bottom Portion, lower end are connected at the top of limit base.

Preferably, the axis hole being adapted to lower valve rod outer diameter is provided in the middle part of valve deck, valve deck is solid by bolt and valve body Fixed connection.

Preferably, seal washer is provided on valve deck and valve body contact face and between limit base and lower valve rod.

Preferably, TFE is sealed and is affixed conjunction state one layer of sealed rubber of stickup in TFE seal pipe ripple struction on inside pipe wall Layer.

Preferably, TFE seals pipe outer wall and flows cover inner wall elastic fit.

Compared with prior art, the utility model has the beneficial effects that the utility model is arranged with wave in lower valve rod bottom The TFE seal pipe of line structure, the characteristic stretched using the ripple struction of TFE seal pipe with lower valve rod, at traditional valve rod Dynamic sealing is converted to the quiet sealing stretched with bellows, while the deformability of TFE seal pipe itself and distinguished anti-aging Property greatly increase the service life of regulating valve, can be recycled for 100,000 times, to effectively prevent the generation of leakage.

Detailed description of the invention

Fig. 1 is the inside concrete structure schematic diagram of the utility model.

In figure: 1, valve body；2, bracket；3, bracket；4, upper valve rod；5, lower valve rod；6, sealing ring；7, stream covers；8, it passes in and out Mouthful；9, limit base；10, spool；11, TFE seal pipe；12, seal washer.

Specific embodiment

The following will be combined with the drawings in the embodiments of the present invention, carries out the technical scheme in the embodiment of the utility model Clearly and completely describe, it is clear that the described embodiments are only a part of the embodiments of the utility model, rather than whole Embodiment.Based on the embodiments of the present invention, those of ordinary skill in the art are without making creative work Every other embodiment obtained, fall within the protection scope of the utility model.

In the description of the present invention, it should be noted that the instructions such as term "vertical", "upper", "lower", "horizontal" Orientation or positional relationship is to be based on the orientation or positional relationship shown in the drawings, and is merely for convenience of description the utility model and simplification Description, rather than the device or element of indication or suggestion meaning must have a particular orientation, constructed and grasped with specific orientation Make, therefore should not be understood as limiting the present invention.

In the description of the present invention, it should also be noted that, unless otherwise clearly defined and limited, term " is set Set ", " installation ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, Or it is integrally connected；It can be mechanical connection, be also possible to be electrically connected；It can be directly connected, intermediary can also be passed through It is indirectly connected, can be the connection inside two elements.It for the ordinary skill in the art, can be according to specific Situation understands the concrete meaning of above-mentioned term in the present invention.

Referring to Fig. 1, the utility model provides a kind of technical solution: a kind of regulating valve of novel TFE sylphon seal, packet The valve deck 2 at 1 top of valve body 1 and valve body is included, bracket 3 is installed above valve deck 2, bracket 3 is interior to be connected with upper valve rod 4 by connector With lower valve rod 5, upper valve rod 4 is placed in 3 top of bracket and connect with axle sleeve, and lower valve rod 5 is inserted into valve body 1 by being pierced by below bracket 3, under 5 outside of valve rod is arranged with sealing ring 6 with 3 bottom junctions of bracket；

Valve body 1 is internally provided with stream cover 7, and 1 two sides of valve body are respectively arranged with inlet and outlet 8, and the insertion of 5 lower end of lower valve rod is flowed In cover 7,5 bottom of lower valve rod is connect with spool 10, limit base 9 is provided with outside spool 10, limit base 9 is by two at 10 liang of spool The structure that symmetrical " Contraband " the type frame composition in side communicates up and down, spool 10 is pierced by by 9 bottom of limit base, outside lower valve rod 5 TFE seal pipe 11 is arranged between valve deck 2 and limit base 9, TFE seal pipe 11 is in continuous ripple struction from top to bottom, TFE 11 upper end of seal pipe is connected to 2 bottom of valve deck, and lower end is connected to 9 top of limit base.

Preferably, the axis hole being adapted to 5 outer diameter of lower valve rod is provided in the middle part of valve deck 2, valve deck 2 passes through bolt and valve body 1 is fixedly connected.

Preferably, it is provided with seal washer 12 on 1 contact surface of valve deck 2 and valve body and between limit base 9 and lower valve rod 5, Keep lower valve rod 5 and valve deck 2,9 junction leakproofness of limit base good.

Preferably, one layer of sealing of conjunction state stickup is affixed in 11 ripple struction of TFE seal pipe on 11 inner wall of TFE seal pipe Rubber layer, increases the frictional force between TFE seal pipe and lower valve rod 5, and palette is good.

Preferably, 11 outer wall of TFE seal pipe and 7 inner wall elastic fits of stream cover.

Working principle: when rotary sleeve, axle sleeve will drive upper valve rod 4 and move up and down, and upper valve rod 14 drives lower valve simultaneously Bar 5 moves up and down, and band movable valve plug 10 moves up and down lower valve rod 5 again, and lower valve rod 5 is external to be arranged between valve deck 2 and limit base 9 TFE seal pipe 11, TFE seal pipe 11 is in from top to bottom continuous ripple struction, 11 upper end of TFE seal pipe are connected to 2 bottom of valve deck Portion, lower end are connected to 9 top of limit base, and during lower valve rod 5 moves up and down, the ripple struction of TFE seal pipe is with lower valve Bar 5 is flexible up and down together, the dynamic sealing at traditional valve rod is converted to the quiet sealing stretched with bellows, while TFE is close The deformability of tube sealing itself and distinguished ageing resistance greatly increase the service life of regulating valve, and can recycle for 100,000 times makes With to effectively prevent the generation of leakage.

While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art, It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.

Claims (5)

1. a kind of regulating valve of novel TFE sylphon seal, which is characterized in that including the valve deck at the top of valve body (1) and valve body (1) (2), it is equipped with bracket (3) above valve deck (2), upper valve rod (4) and lower valve rod (5) is connected with by connector in bracket (3), on Valve rod (4) is placed in above bracket (3) and connect with axle sleeve, and lower valve rod (5) below bracket (3) by being pierced by insertion valve body (1), lower valve Bar (5) is external to be arranged with sealing ring (6) with bracket (3) bottom junctions；

Valve body (1) is internally provided with stream cover (7), valve body (1) two sides and is respectively arranged with inlet and outlet (8), and lower valve rod (5) lower end is inserted Enter in stream cover (7), lower valve rod (5) bottom is connect with spool (10), is provided with limit base (9), limit base outside spool (10) (9) structure communicated up and down is formed by two " Contraband " type frames symmetrical in spool (10) two sides, spool (10) is by limiting Seat (9) bottom is pierced by, and lower valve rod (5) is external to be arranged with TFE seal pipe (11) between valve deck (2) and limit base (9), and TFE is close For tube sealing (11) in continuous ripple struction from top to bottom, TFE seal pipe (11) upper end is connected to valve deck (2) bottom, and lower end abuts At the top of limit base (9).

2. a kind of regulating valve of novel TFE sylphon seal according to claim 1, it is characterised in that: in the middle part of valve deck (2) It is provided with the axis hole being adapted to lower valve rod (5) outer diameter, valve deck (2) is fixedly connected by bolt with valve body (1).

3. a kind of regulating valve of novel TFE sylphon seal according to claim 1, it is characterised in that: valve deck (2) and valve Seal washer (12) are provided on body (1) contact surface and between limit base (9) and lower valve rod (5).

4. a kind of regulating valve of novel TFE sylphon seal according to claim 1, it is characterised in that: TFE seal pipe (11) conjunction state one layer of tight rubber layer of stickup is affixed in TFE seal pipe (11) ripple struction on inner wall.

5. a kind of regulating valve of novel TFE sylphon seal according to claim 1, it is characterised in that: TFE seal pipe (11) outer wall and stream cover (7) inner wall elastic fit.