CN202109013U

CN202109013U - Disk valve

Info

Publication number: CN202109013U
Application number: CN2010206598552U
Authority: CN
Inventors: 李四波; 雷义军
Original assignee: WUHAN YAMEI VALVE MANUFACTURING Co Ltd
Current assignee: WUHAN YAMEI VALVE MANUFACTURING Co Ltd
Priority date: 2010-12-14
Filing date: 2010-12-14
Publication date: 2012-01-11
Anticipated expiration: 2020-12-14

Abstract

The utility model relates to a disk valve which comprises the following components: an upper valve body and a lower valve body which are interconnected, a valve shaft, a driving member, a valve disk, a valve seat and an actuator. The upper valve body is provided with the valve shaft. The lower end of the valve shaft is inserted into the lower valve body. The driving member is inserted into the valve disk and is connected with the valve shaft through a key. The valve disk closely clings on the valve seat. The executor is connected with the valve shaft. The valve disk is also provided with an elastic sealing device which causes close joint between the valve disk and the valve seat. The elastic sealing device is composed of the following components: a valve shaft compensation elastic component which is internally provided at a lower end of the valve shaft, and a valve disk compensation elastic component which is internally provided in the driving member. A sealing surface of the valve seat is also provided with a hard alloy cladding layer. The disk valve with the structure can ensure an enough sealing force between the valve disk and the valve seat and prevents heat dead lock or cold leakage of the valve. Simultaneously particle dust-shaped medium can be prevented from entering a sealing surface. Furthermore self mirror surface grinding of the sealing surface can be realized, thereby realizing good sealing and prolonging service life of the disk valve.

Description

Moushroom valve

Technical field

This practicality relates to a kind of moushroom valve; Specifically; Relate to a kind of valve that is exclusively used in high hardness material, slurry delivery system, can be applicable to feed bin, reaction kettle, separator and pipe-line system in the industries such as polysilicon, petrochemical industry, smelting, thermoelectricity, iron and steel, Coal Chemical Industry.

Background technique

In hardness higher granular or dust-like material and slurry delivery system; Erosion makes seal failure, heat lock, leaks outside and the hard coat of moushroom valve is thin and easy abrasion etc. is former thereby cause working life short conventional valves to valve sealing face for therebetween material wearing and tearing, high-velocity fluid owing to valve sealing face can be jumped the queue very soon, and sealing effect is poor.

The model utility content

First goal of the invention of the utility model is: a kind of moushroom valve that makes valve disc and valve seat excellent sealing is provided.

The technological scheme of the utility model is: a kind of moushroom valve comprises the upper valve body and following valve body that are coupled to each other, valve shaft, actuator, valve disc, valve seat, final controlling element; Be provided with valve shaft at upper valve body; This valve shaft lower end embeds valve body down; Actuator embeds in the valve disc and with valve shaft and is connected through key, and valve disc fits tightly on valve seat, and final controlling element is connected with valve shaft; This valve disc also have one valve disc and valve seat are fitted tightly elastic sealing device, this elastic sealing device is made up of valve shaft compensation elastic member that is built in the valve shaft lower end and the valve disc compensation elastic member that is built in actuator.This valve shaft compensation elastic member and valve disc compensate the matching relationship that elastic member forms a kind of specific power, and this coupling can make valve disc and valve base chamber that enough sealing forces are arranged, and guarantee that valve realizes strict seal under forward and reverse pressure.Simultaneously, this structure also allows valve disc that certain displacement is arranged on the direction perpendicular to sealing surface, owing to the deformation that variation of temperature produces, prevents that valve from producing " heat is locked ", " cold leakage " phenomenon with the compensation valve parts.Simultaneously; The sealing configuration of this moushroom valve can prevent that any granule dust shape medium from getting between two sealing surfaces; And in the each process that opens and closes of valve; The total travel sealing surface of seat can be given uneven tangent direction friction power of valve disc, and this power can make valve disc rotation, makes the oneself of valve disc through two sealing surfaces grind to shear with cleaning and is accumulated in the medium on the valve seat.

The valve seat of the utility model adopts the total travel valve seat, and valve is in the total travel that opens and closes, and the break-in all the time of total travel valve seat and valve disc can reach the effect of mirror ultrafinish.

The sealing surface of the moushroom valve that the utility model relates to is provided with laser cladding layer, and this cladding layer is the Co/WC cemented carbide, and the content of WC reaches 80% (percent by volume), has guaranteed the obdurability of cladding layer.Simultaneously; Be metallurgy combination between cladding layer and base material, the thickness of this cladding layer is adjustable at 0.3-2.0mm, the hardness >=HRC65 of cladding layer and organize tiny densification; WC hardening constituent even particle distribution, thus guarantee that moushroom valve has good wear resistance and high temperature resistant performance of flushing.

In sum; The moushroom valve that the utility model relates to can guarantee that valve disc and valve base chamber have enough sealing forces, prevents that valve from producing " heat is locked ", " cold leakage " phenomenon; Can prevent simultaneously that any granule dust shape medium from getting into sealing surface; And can make two sealing surfaces realize self-mirror ultrafinish, thus realize good sealing, prolong moushroom valve working life.

Description of drawings

Below in conjunction with accompanying drawing and mode of execution the utility model is done further detailed explanation.

Fig. 1 is the agent structure sectional view of first kind of mode of execution of the utility model moushroom valve.

Fig. 2 is the agent structure sectional view of second kind of mode of execution of the utility model moushroom valve.

Fig. 3 is the structural representation of the utility model moushroom valve.

Embodiment

Shown in Figure 1 is first kind of mode of execution of the utility model, i.e. single-deck single seated moushroom valve.Single-deck single seated moushroom valve as shown in Figure 1 comprises the upper valve body 1 and following valve body 2 that are coupled to each other, valve shaft 1, actuator 5, valve disc 4, valve seat 13, final controlling element 15; Be provided with valve shaft 3 at upper valve body 1; These valve shaft 3 lower ends are embedded in down valve body 2; Actuator 5 is embedded in the valve disc 4 and with valve shaft 3 and is connected through key 9; Valve disc 4 fits tightly on valve seat 13; This valve disc 4 also have one valve disc 4 and valve seat 13 are fitted tightly elastic sealing device, this elastic sealing device is made up of valve shaft compensation elastic member 8 that is built in valve shaft 3 lower ends and the valve disc compensation elastic member 7 that is built in actuator 5, described compensation elastic member can select for use spring or other to have the parts of similar functions.

As shown in Figure 1, the radial clearance that actuator 5 embeds said valve disc 4 partly is provided with filler 11, embeds the said bottom of valve body 2 down at upper valve body 1 and is provided with filler 11, and said part support ring 8 embeds the said bottom of valve body 2 down and also is provided with filler 11.

On valve shaft 3, be arranged with the valve shaft packing elements; Be provided with valve shaft filler stage clip 10 in this packing elements upper end; Fill the filler 11 of multiple soft and hard alternation in this feature bottom; Valve shaft filler elastic member is used for compensating the filler wearing and tearing and expands with heat and contract with cold, and these parts can select for use stage clip or other to have the structure of similar functions.

Be provided with purge hole 6 at upper valve body 1, help reducing the accumulation of material.

Valve seat 13 is the total travel valve seat, and guaranteeing valve in the total travel that opens and closes, valve seat 13 and valve disc 4 break-in all the time reach the effect of mirror ultrafinish.

Also be provided with the part supporting ring 12 that links to each other with valve shaft 3 on the following valve body 2.Be embedded in the bottom of valve body 2, the radial clearance that actuator 5 is embedded in valve disc 4 partly to be equipped with filler 11 at upper valve body 1, part support ring 12 to guarantee the sealing effect of surface of contact.

As shown in Figure 3, final controlling element 15 is connected with valve shaft 3.Said final controlling element can be likes such as handle, handwheel, electric motor, gear, cylinder.

Valve disc 4 is provided with cladding layer 14 with the sealing surface of valve seat 13, and this cladding layer 14 is made up of the CO/WC cemented carbide, and the content of WC can reach 80% (percent by volume), and the thickness of this cladding layer 14 is adjustable at 0.3-2.0mm, the hardness >=HRC65 of cladding layer.

Shown in Figure 2 is second kind of mode of execution of the utility model, i.e. double plate double seat moushroom valve.The difference of double plate double seat moushroom valve as shown in Figure 2 and single-deck single seated moushroom valve is: on said upper valve body, also be provided with valve disc and valve seat accordingly, this valve disc links to each other with driver.

The working principle of the related moushroom valve of the utility model is: driving mechanism drives the valve shaft rotation, makes driver part to be center of circle rotation in the axle, and its movement locus is circular-arc, and the valve disc that is contained on the driver part produces displacement thereupon, closes thereby reach valve opening.Valve shaft filler elastic member is contained in and guarantees filler ability tight seal in the upper valve body axis hole; Valve shaft compensation elastic member is contained in down and prevents then in the valve body axis hole that valve from producing " heat is locked ", " cold leakage ", and valve disc compensation elastic member is contained in and then guarantees with valve base chamber enough sealing forces are arranged in the driver.Single-deck single seated structure adapts to the one-way sealing requirement, and double plate double seat structure adapts to the requirement of two way sealed.

The utility model is not limited to above-mentioned embodiment, and according to the difference of industrial and mineral, moushroom valve can also have multiple variation, like the single seat double plate.Simple, equivalent transformation that all claims and description according to the utility model application are done all fall into the protection domain of the utility model.

Claims

1. a moushroom valve comprises upper valve body (1), following valve body (2), and valve shaft (3), actuator (5), valve disc (4), valve seat (13), final controlling element (15),

Said upper valve body (1) and said valve body (2) down interconnect; On said upper valve body (1), be provided with said valve shaft (3), said valve shaft (3) lower end is embedded in said valve body (2) down, and said actuator (5) is embedded in the said valve disc (4); Said actuator (5) is connected through key (9) with said valve shaft (3); Said valve disc (4) fits tightly on said valve seat (13), and said final controlling element (15) is connected with said valve shaft (3)

It is characterized in that: also be provided with elastic sealing device; Said elastic sealing device compensates elastic member (8) by valve shaft and valve disc compensation elastic member (7) is formed; Said valve shaft compensation elastic member (8) is built in valve shaft (3) lower end; Said valve disc compensation elastic member (7) is built in said actuator (5), and said elastic sealing device fits tightly said valve disc (4) and said valve seat (13).

2. according to the described moushroom valve of claim 1, it is characterized in that: on said valve shaft (3), be arranged with the valve shaft packing elements, be provided with valve shaft filler stage clip (10), be provided with filler (11) in said packing elements bottom in said packing elements upper end.

3. according to the described moushroom valve of claim 1, it is characterized in that: be provided with the part supporting ring (12) that links to each other with said valve shaft (3) on the valve body (2) down said.

4. according to the described moushroom valve of claim 1, it is characterized in that: be provided with purge hole (6) at said upper valve body (1).

5. according to the described moushroom valve of claim 1, it is characterized in that: said valve seat (13) is the total travel valve seat.

6. according to the described moushroom valve of claim 1; It is characterized in that: the radial clearance that said actuator (5) embeds said valve disc (4) partly is provided with filler (11); Embed the said bottom of valve body (2) down at said upper valve body (1) and be provided with filler (11), said part support ring (8) embeds the said bottom of valve body (2) down and also is provided with filler (11).

7. according to each described moushroom valve of claim 1-4, it is characterized in that: the sealing surface at said valve disc (4) and said valve seat (13) is provided with laser cladding layer (14).

8. according to the described moushroom valve of claim 1, it is characterized in that: said cladding layer (14) is the CO/WC hard alloy layer.

9. according to the described moushroom valve of claim 1, it is characterized in that: the thickness of said cladding layer (14) is 0.3-2.0mm.

10. according to the described moushroom valve of claim 1, it is characterized in that: on said upper valve body (1), also be provided with valve disc (4) and valve seat (13) accordingly, this valve disc (4) links to each other with said driver (5).