CN201359102Y

CN201359102Y - Fluid pressure sealing gate valve

Info

Publication number: CN201359102Y
Application number: CNU2009200635659U
Authority: CN
Inventors: 钟汉光
Original assignee: Individual
Current assignee: Hunan Jinzhong Environmental Equipment Co Ltd
Priority date: 2009-03-10
Filing date: 2009-03-10
Publication date: 2009-12-09
Anticipated expiration: 2019-03-10

Abstract

The utility model discloses a fluid pressure sealing gate valve which includes a valve body and a gate. An annular sealing pressure cavity is arranged between the gate and the top plate on the inner wall of the valve body; a sealing piston ring is arranged in the annular sealing pressure cavity; one end of a communicating tube is communicated with the annular sealing pressure cavity, and the other end is connected with a pressure pump; a pressure valve is mounted on the communicating tube. A guide wheel is mounted on the inner side wall of the valve body, installed on the side wall of the valve body, and used for supporting the gate. One end of the gate is connected with a push bar, the other end of the push bar is connected with a power device outside the valve body, the push bar passes through the space between the side walls of the valve body, and a sealing element is arranged at the space. The utility model has the benefits as follows: (1) no air leakage, that is, when the gate is closed and in position, the gate can be pressed tightly by the sealing piston ring in the annular sealing pressure cavity and under the action of pressure, so that the sealing between the gate and the valve body is ensured and can bear negative pressure at 20,000 Pa; (2) no slag inclusion, that is, when the gate closes the valve port, the knife edge at the front end of the gate can cut up slag particles, so that the gate can not be stuck; and (3) no slag deposition, that is, the gate is supported by the guide wheel, and the guide wheel can adjust the clearance between the gate and the contact surface of the annular sealing pressure cavity through an eccentric shaft, so that the gate can be adhered onto the contact surface of the annular sealing pressure cavity tightly, and no slag deposition appears, moreover, the gate doesn't move in a guide groove, so that the slag deposition phenomenon of the traditional gate valve, which frequently appears in the gate guide groove, is overcome.

Description

Hydrodynamic pressure sealing damper valve

Technical field

The utility model relates to a kind of gate valve.

Background technique

Gate valve is a kind of at metallurgy, the valve of generating, building materials, chemical industry extensive use, because the working environment of gate valve is a high negative pressure, traditional gate valve flashboard is to adopt the guiding groove guiding, gap between flashboard and the guiding groove is non-adjustable, cause flashboard and valve body blow-by, it is serious to leak out, and causes device damage; Often the slag inclusion folder is grey in guiding groove, and it is not in place to cause flashboard to close, and the flashboard operation is dumb.

The model utility content

The purpose of this utility model provides a kind of hydrodynamic pressure sealing damper valve.

The purpose of this utility model realizes in the following way: a kind of hydrodynamic pressure sealing damper valve, comprise valve body, flashboard, between flashboard and valve interior wall top board, the ring packing pressure chamber is arranged, in the ring packing pressure chamber, sealed piston ring is arranged, connecting tube one, end was communicated with annular sealing load chamber, and another termination pressure pump is equipped with pressure valve on connecting tube; On the valve body madial wall guide wheel is housed, guide wheel is contained on the body wall by guide wheel shaft, and guide wheel is held flashboard; One termination push rod of flashboard, the power plant that another termination valve body of push rod is outer, push rod pass between the sidewall of valve body Sealing.

Guide wheel shaft is contained on body wall by eccentric shaft.

One end of flashboard connects push rod by pivot pin.

The front end upper limb of flashboard is edge of a knife shape.

Described pressure valve comprises valve seat, and the connecting tube interface is arranged on valve seat, pressurization interface release interface, sliding valve core is arranged in valve seat, at sliding valve core pressurization connecting tube and release connecting tube are arranged, valve push rods one terminates on the sliding valve core, and the other end is connected on the relay.

The utlity model has following beneficial effect, the one, do not leak out, when flashboard close put in place after, the sealed piston ring in the ring packing pressure chamber compresses flashboard under the effect of pressure, guarantees the sealing of flashboard and valve body, the negative pressure that can bear 20,000 Pa; The 2nd, slag inclusion not, when the flashboard close port, the front end edge of a knife of flashboard can shred slag particle, can not cause the stuck phenomenon of flashboard; The 3rd, accumulated slag not, because flashboard is to be supported by guide wheel, guide wheel can be regulated the gap of flashboard and ring packing pressure chamber surface of contact by eccentric shaft, make flashboard be close to ring packing pressure chamber surface of contact, can not produce accumulated slag, and flashboard is not to want to move in the guide groove, has overcome the phenomenon of traditional gate valve easy accumulated slag in the flashboard guide groove.

Description of drawings

Fig. 1 is a cross section view of the present utility model;

Fig. 2 is an A-A cross section view of the present utility model;

Fig. 3 is a B-B cross section view of the present utility model;

Fig. 4 is the cross section view of the utility model flashboard when opening;

Fig. 5 is the cross section view of pressure valve of the present utility model;

Fig. 6 is the another kind of embodiment's twolayer fluid of a utility model wiper seal gate valve cross section view;

Embodiment

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, shown in Figure 5, a kind of hydrodynamic pressure sealing damper valve, comprise valve body 1, flashboard 7, between flashboard 7 and valve body 1 inwall top board, ring packing pressure chamber 2 is arranged, sealed piston ring 3 is arranged in ring packing pressure chamber 2, connecting tube 4 one end be communicated with annular sealing load chamber 2, another termination pressure pump 6 is equipped with pressure valve 5 on connecting tube 4; On valve body 1 madial wall guide wheel 8 is housed, guide wheel 8 is contained on valve body 1 sidewall by guide wheel shaft 13, and guide wheel 8 is held flashboard 7; One termination push rod 9 of flashboard 7, the power plant 11 that another termination valve body 1 of push rod 9 is outer, push rod 9 pass between the sidewall of valve body 1 Sealing 12; Guide wheel shaft 13 is contained on valve body 1 sidewall by eccentric shaft 14; One end of flashboard 7 connects push rod 9 by pivot pin 10; Described pressure valve 5 comprises valve seat 15, connecting tube interface 16 is arranged on valve seat 15, pressurization interface 17 release interfaces 18, sliding valve core 19 is arranged in valve seat 15, at sliding valve core 19 pressurization connecting tube 20 and release connecting tube 21 are arranged, valve push rods 23 1 terminates on the sliding valve core 19, and the other end is connected on the relay 22; The front end upper limb of flashboard 7 is edge of a knife shape.

As shown in Figure 6, a kind of twolayer fluid wiper seal gate valve is made up of two hydrodynamic pressure sealing damper valves, and the outlet of upper strata twolayer fluid wiper seal gate valve connects lower floor's twolayer fluid wiper seal gate valve import.Twolayer fluid wiper seal gate valve is mainly used in high negative pressure and unloads ash.

Working principle of the present utility model is: behind the valve port of flashboard 7 valve body 1, pressure pump 6 starts, pressurization connecting tube 20 the connection connecting tube interface 16 and the interface 17 that pressurizes on the sliding valve core 19 in the pressure valve 5, pressure pump 6 passes through pressure valve 5 to ring packing pressure chamber 2 conveyance fluids with fluid, fluid can be oil, water or gas, after fluid enters ring packing pressure chamber 2, with sealed piston ring 3 to external pressure, sealed piston ring 3 is pressed on the flashboard 7, guarantees the sealing of flashboard 7; When flashboard 7 is opened, release connecting tube 21 connection connecting tube interface 16 and release interface 18 on the sliding valve core 19 in the pressure valve 5, the fluid in the ring packing pressure chamber 2 draws off, stress relaxation, sealed piston ring 3 retractions, flashboard 7 is opened.

The working principle of twolayer fluid wiper seal gate valve is: when the flashboard 7 of upper strata twolayer fluid wiper seal gate valve is opened, the flashboard 7 of lower floor's twolayer fluid wiper seal gate valve cuts out, when the flashboard 7 of upper strata twolayer fluid wiper seal gate valve cuts out, the flashboard 7 of lower floor's twolayer fluid wiper seal gate valve is opened, be applicable to that high negative pressure unloads ash, can bear the negative pressure of 20,000 Pa.

Claims

1, a kind of hydrodynamic pressure sealing damper valve, comprise valve body [1], flashboard [7], it is characterized in that: between flashboard [7] and valve body [1] inwall top board, ring packing pressure chamber [2] is arranged, sealed piston ring [3] is arranged in ring packing pressure chamber [2], connecting tube [4] one, end was communicated with annular sealing load chamber [2], and another termination pressure pump [6] is equipped with pressure valve [5] on connecting tube [4]; On valve body [1] madial wall guide wheel [8] is housed, guide wheel [8] is contained on valve body [1] sidewall by guide wheel shaft [13], and guide wheel [8] is held flashboard [7]; One termination push rod [9] of flashboard [7], the power plant [11] that another termination valve body [1] of push rod [9] is outer, push rod [9] pass between the sidewall of valve body [1] Sealing [12].

2, a kind of hydrodynamic pressure sealing damper valve according to claim 1, it is characterized in that: guide wheel shaft [13] is contained on valve body [1] sidewall by eccentric shaft [14].

3, a kind of hydrodynamic pressure sealing damper valve according to claim 1, it is characterized in that: an end of flashboard [7] connects push rod [9] by pivot pin [10].

4, a kind of hydrodynamic pressure sealing damper valve according to claim 1, it is characterized in that: described pressure valve [5] comprises valve seat [15], connecting tube interface [16] is arranged on valve seat [15], pressurization interface [17] release interface [18], sliding valve core [19] is arranged in valve seat [15], at sliding valve core [19] pressurization connecting tube [20] and release connecting tube [21] are arranged, valve push rods [23] terminates on the sliding valve core [19], and the other end is connected on the relay [22].

5, a kind of hydrodynamic pressure sealing damper valve according to claim 1, it is characterized in that: the front end upper limb of flashboard [7] is edge of a knife shape.