CN212959945U

CN212959945U - Special fixed ball valve of short type list disk seat powder sediment

Info

Publication number: CN212959945U
Application number: CN202020065901.XU
Authority: CN
Inventors: 洪德隆
Original assignee: Anhui Min Zhi Yu Valve Technology Co ltd
Current assignee: Anhui Min Zhi Yu Valve Technology Co ltd
Priority date: 2020-01-02
Filing date: 2020-01-02
Publication date: 2021-04-13
Anticipated expiration: 2030-01-02

Abstract

The utility model discloses a special fixed ball valve of single disk seat powder sediment of short type, including the valve body, set up in the inside spheroid of valve body, weld in the disk seat of valve body one end and weld in the first flange of the valve body other end, the bore of two grades is less than first flange's latus rectum to spheroidal latus rectum, and the top of valve body is provided with the transmission shaft, and the top of transmission shaft is used for connecting the executor, and the bottom and the spheroid of transmission shaft are connected. The utility model provides a special fixed ball valve of short-type list disk seat powder sediment, can satisfy various abominable operating mode demands, it does not have sealedly at powder sediment and abominable medium pipeline valve to have explaided, the short-life difficult problem, for control dusty gas, it provides solution to contain granule liquid and solid powder pipe-line system headstock gear valve, the blank of pipeline transport powder sediment control valve technique has been filled, be applicable to and contain slightly big particulate matter in the medium and account for the higher operating mode, like the dust pelletizing system of blast furnace etc., have high performance, high efficiency, low maintenance rate, low-cost advantage.

Description

Special fixed ball valve of short type list disk seat powder sediment

Technical Field

The utility model relates to a control flap technical field especially relates to a special fixed ball valve of short type list disk seat powder sediment.

Background

The ball valve special for the powder slag is widely used for pipelines with severe working conditions, such as steel smelting, petrochemical industry, coal chemical industry, mines, urban construction and the like. However, products on the market at present can not completely meet domestic process conditions, and domestic environmental protection requirements are gradually improved, so that a lot of factories which originally can raise dust at will are required to be completely closed and changed into pipeline transportation, a lot of transported particles, pipeline powder and the like are randomly generated, and the working condition is extremely bad.

To above-mentioned abominable operating mode, present unloading ball valve part has adopted and has had the tetrafluoro that certainly compensaties the function sealed, nevertheless because of the reason of valve seal material, can't resist medium granule and open extrusion and the fish tail of closing the in-process to sealed face, although tetrafluoro has certain self-compensation function, even a bit damage, through the characteristic of tetrafluoro, also can make some mediums embed in the tetrafluoro. However, after the impurities or dust particles are embedded into the ptfe sealing surface, after the valve is continuously opened and closed for only 50 times, the valve sealing surface is abraded to form a gully, so that the valve cannot be sealed, internal leakage occurs or the valve body is blown through to cause external leakage, and the service life of the valve is shortened.

In addition, the ash discharging ball valve partially adopts a half ball valve type, the closing of the half ball valve is realized by the eccentric center of the ball body and the valve body, the eccentric center of the rotating shaft and the ball body and the gradual approach of the spherical surface and the sealing surface, so that a medium is attached to the spherical surface and the sealing surface, fine powder can be extruded into hard dirt while the valve is closed by parallel and strong extrusion, the medium with different hardness and different size particles is remained on the sealing surface of the valve, the valve leakage with different degrees is further caused, and the leakage problem cannot be fundamentally solved.

Meanwhile, part of users select a hard seal ball valve and a ceramic ball valve, and although the valve seal and the ball body of the ball valve are both made of hard alloy and sprayed tungsten carbide, the flushing resistance is obviously improved, but the price is high. In addition, in the opening and closing processes of the valve, the problem that fine powder is rolled on the spherical surface or a particulate medium causes blocking still exists, once the dirt reaches a certain thickness, the valve cannot be completely opened and closed until the ball is locked, and the maintenance frequency and the cost are both high.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a special fixed ball valve of short type list disk seat powder sediment that rational in infrastructure, sealing performance is good, long service life, with low costs.

In order to achieve the above object, the utility model provides a following scheme:

the utility model provides a special fixed ball valve of single disk seat powder sediment of short type, including the valve body, set up in inside spheroid of valve body, weld in the disk seat of valve body one end and weld in the first flange of the valve body other end, spheroidal latus rectum is compared at least the bore of two little grades in first flange's latus rectum, the top of valve body is provided with the transmission shaft, the top of transmission shaft is used for connecting the executor, the bottom of transmission shaft with the spheroid is connected.

Optionally, a second connecting flange is mounted at the outer end of the valve seat.

Optionally, a transmission shaft support is arranged at the top of the valve body, the transmission shaft penetrates through the transmission shaft support and then is connected with the ball, and a transmission shaft bushing is arranged between the transmission shaft and the inner wall of the transmission shaft support.

Optionally, the transmission shaft bracket comprises a first bracket and a second bracket mounted above the first bracket, and the first bracket is connected with the valve body; and a packing gland used for plugging the packing is arranged between the transmission shaft and the second support.

Optionally, a thrust pad is disposed between the transmission shaft and the first bracket, and the thrust pad is located between the packing and the transmission shaft bushing.

Optionally, a valve seat retaining ring is arranged between the valve seat and the ball body, and a combined sealing element is arranged between the valve seat retaining ring and the valve body.

Optionally, the combined sealing element comprises a sealing ring and a ring support, and the sealing ring abuts against the outer edge of the valve body through the ring support; and a metal sealing ring is also arranged between the ring support and the valve seat retainer ring.

Optionally, the transmission shaft is in key connection with the ball.

Optionally, the actuator is a manual turbine or an electric turbine.

Optionally, a positioning shaft support and a positioning shaft penetrating through the positioning shaft support are installed at the bottom of the valve body, the top end of the positioning shaft is in key connection with the sphere, a positioning shaft rear cover is installed at the bottom end of the positioning shaft, and a positioning shaft bushing is arranged between the positioning shaft and the inner wall of the positioning shaft support.

The utility model discloses for prior art gain following technological effect:

the utility model provides a special fixed ball valve of short-type list disk seat powder sediment, through all with flange and disk seat welding with the valve body, be favorable to improving overall structure's compactedness and leakproofness, can satisfy various abominable operating mode demands, can satisfy the medium that has certain corrosivity, and application scope is more extensive, it does not have sealedly at powder sediment and abominable medium pipeline valve to have explaided, the short-life difficult problem, for control dusty gas, it provides solution to contain granule liquid and solid powder pipe-line system headstock gear valve, the blank of pipeline transport powder sediment control flap technique has been filled. The special fixed ball valve for the short single-valve-seat powder slag is suitable for being installed in a vertical pipeline, basically does not have dust deposition, is suitable for working conditions with higher proportion of slightly large particles in a medium, such as a dust removal system of a blast furnace and the like, can replace a hemispherical valve body under the same working conditions, and has the advantages of high performance, high benefit, low maintenance rate and low cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

FIG. 1 is a schematic structural view of the short single-seat powder slag special fixed ball valve of the present invention;

wherein the reference numerals are: 1. a valve body; 2. a sphere; 3. a valve seat; 4. a first connecting flange; 5. a drive shaft; 6. a transmission shaft support; 6-1, a first bracket; 6-2, a second bracket; 7. a drive shaft bushing; 8. a filler; 9. a packing gland; 10. a thrust pad; 11. a seal ring; 12. a ring support; 13. a valve seat retainer ring; 14. a metal seal ring; 15. a positioning shaft support; 16. positioning the shaft; 17. positioning the shaft rear cover; 18. the shaft bushing is positioned.

Detailed Description

The technical solutions in the embodiments 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 in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.

The first embodiment is as follows:

as shown in fig. 1, the embodiment provides a special fixed ball valve of short type list disk seat powder sediment, including valve body 1, set up in the inside spheroid 2 of valve body 1, weld in the disk seat 3 of valve body 1 one end and weld in the first connecting flange 4 of the valve body 1 other end, the latus rectum of spheroid 2 is at least than the bore of two grades less than the latus rectum of first connecting flange 4, the top of valve body 1 is provided with transmission shaft 5, the top of transmission shaft 5 is used for connecting the executor, the executor is used for driving transmission shaft 5 and rotates, the bottom and the spheroid 2 of transmission shaft 5 are connected. The nominal inner diameter grade specification of the sphere and the nominal inner diameter grade specification of the connecting flange are well known in the art, and are not described herein, for example, when the inner hole diameter of the first connecting flange 4 is 300mm, the sphere 2 is a sphere structure with a nominal inner diameter of 200 mm.

In this embodiment, as shown in fig. 1, the outer end of the valve seat 3 is provided with a second connecting flange, preferably integrally formed with the valve seat 3 (not shown in the figure for connecting a pipe).

In this embodiment, as shown in fig. 1, a transmission shaft bracket 6 is arranged at the top of the valve body 1, and the transmission shaft penetrates through the transmission shaft bracket 6 and then is connected with the ball 2 in a key manner, so that the transmission shaft 5 drives the ball 2 to rotate synchronously when rotating; a transmission shaft bushing 7 is arranged between the transmission shaft 5 and the inner wall of the transmission shaft bracket 6, the transmission shaft bushing 7 is preferably a PTFE composite bearing, and the PTFE composite bearing is installed in the present embodiment by the existing method.

In this embodiment, as shown in fig. 1, the transmission shaft bracket 6 includes a first bracket 6-1 and a second bracket 6-2 installed above the first bracket 6-1, the first bracket 6-1 is connected with the valve body 1, and the bottom end of the second bracket 6-2 is closely butted with the top end of the first bracket 6-1 through a concave-convex structure; packing 8 is filled between the transmission shaft 5 and the first support 6-1, a packing gland 9 for plugging the packing 8 is installed between the transmission shaft 5 and the second support 6-2, a corresponding sealing ring structure is further arranged at the bottom of the packing 8, and the packing 8 is sealed between the packing gland 9 and the sealing ring structure. Among them, the filler 8 is preferably one of PTFE or flexible graphite.

In this embodiment, as shown in fig. 1, a thrust pad 10 is disposed between the propeller shaft 5 and the inner wall of the first bracket 6-1, and the thrust pad 10 is located between the above-mentioned packing 8 and the propeller shaft bushing 7.

In this embodiment, as shown in fig. 1, a valve seat retainer 13 is disposed between the valve seat 3 and the ball 2, a combined sealing member is disposed between the valve seat retainer 13 and the valve body 1, the combined sealing member includes a sealing ring 11 and a ring holder 12, and the sealing ring 11 is abutted to the outer edge of the valve body 1 through the ring holder 12; in this embodiment, the sealing ring 11 is preferably a tetrafluoro sealing ring, and the ring holder 12 is preferably a tetrafluoro ring holder.

In this embodiment, as shown in fig. 1, a metal seal ring 14 is provided between the seat retainer 13 and the seal ring 11 and the ring holder 12 of the combination seal.

In this embodiment, the actuator is preferably any one of a manual turbine, an electric turbine, a pneumatic mode, a hydraulic mode, or other existing driving modes.

In this embodiment, as shown in fig. 1, a positioning shaft support 15 and a positioning shaft 16 penetrating through the positioning shaft support 15 are installed at the bottom of the valve body 1, the top end of the positioning shaft 16 is connected with the spherical body 2 in a key manner, a positioning shaft rear cover 17 is installed at the bottom end of the positioning shaft 16 through a counter bore bolt, a positioning shaft bushing 18 is installed between the positioning shaft 16 and the inner wall of the positioning shaft support 15, and the positioning shaft bushing 18 is preferably a PTFE composite bearing.

The utility model provides a special fixed ball valve of short-type list disk seat powder sediment can satisfy various abominable operating mode demands, can satisfy the medium that has certain corrosivity, and application scope is more extensive, it does not have sealedly at powder sediment and abominable medium pipeline valve to have explaided, the short-life difficult problem, the effect of ultralow maintenance rate and ultralow cost has been reached, for control dusty gas, the headstock gear valve of containing granule liquid and solid powder pipeline system provides solution, the blank of pipeline transportation powder sediment control flap technique has been filled.

Meanwhile, through changing the traditional sealing structure, the sealing performance can also realize zero leakage after more than 500 times of opening and closing can be ensured under severe working conditions; the problem that the pipeline valve is not sealed and has short service life in the powder slag and the severe medium is solved, a solution is provided for controlling the on-off device valve of the pipeline system containing dust gas, liquid containing particles and solid powder, the valve is suitable for the working condition that the medium contains slightly larger particles with higher proportion, such as a dust removal system with small particle size of a blast furnace, and the valve has the advantages of high performance, high benefit, low maintenance rate and low cost.

It should be noted that, as is obvious to a person skilled in the art, the invention is not limited to details of the above-described exemplary embodiments, but can be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein, and any reference signs in the claims are not intended to be construed as limiting the claim concerned.

The utility model discloses a concrete example is applied to explain the principle and the implementation mode of the utility model, and the explanation of the above example is only used to help understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present specification should not be construed as a limitation of the present invention.

Claims

1. The utility model provides a special fixed ball valve of short type list disk seat powder sediment which characterized in that: including the valve body, set up in inside spheroid of valve body, weld in the disk seat of valve body one end and weld in the first flange of the valve body other end, spheroidal latus rectum is compared two low grades of first flange's latus rectum, the top of valve body is provided with the transmission shaft, the top of transmission shaft is used for connecting the executor, the bottom of transmission shaft with the spheroid is connected.

2. The special fixed ball valve for short type single valve seat powder slag according to claim 1, characterized in that: and a second connecting flange is arranged at the outer end of the valve seat.

3. The special fixed ball valve for short type single valve seat powder slag according to claim 1, characterized in that: the top of the valve body is provided with a transmission shaft support, the transmission shaft penetrates through the transmission shaft support and then is connected with the ball body, and a transmission shaft bushing is arranged between the transmission shaft and the inner wall of the transmission shaft support.

4. The special short fixed ball valve with single valve seat for powder slag according to claim 3, characterized in that: the transmission shaft bracket comprises a first bracket and a second bracket arranged above the first bracket, and the first bracket is connected with the valve body; and a packing gland used for plugging the packing is arranged between the transmission shaft and the second support.

5. The special short fixed ball valve with the single valve seat for powder slag according to claim 4, wherein: and a thrust pad is arranged between the transmission shaft and the first support and is positioned between the filler and the transmission shaft bushing.

6. The special fixed ball valve for short type single valve seat powder slag according to claim 1, characterized in that: and a valve seat check ring is arranged between the valve seat and the ball body, and a combined sealing element is arranged between the valve seat check ring and the valve body.

7. The special short fixed ball valve with single valve seat for powder slag according to claim 6, wherein: the combined sealing element comprises a sealing ring and a ring support, and the sealing ring is abutted against the outer edge of the valve body through the ring support; and a metal sealing ring is also arranged between the ring support and the valve seat retainer ring.

8. The special fixed ball valve for short type single valve seat powder slag according to claim 1, characterized in that: the transmission shaft is connected with the ball body in a key mode.

9. The special fixed ball valve for short type single valve seat powder slag according to claim 1, characterized in that: the actuator is a manual turbine or an electric turbine.

10. The special fixed ball valve for short type single valve seat powder slag according to claim 1, characterized in that: the bottom of the valve body is provided with a positioning shaft support and a positioning shaft penetrating through the positioning shaft support, the top end of the positioning shaft is in key connection with the sphere, the bottom end of the positioning shaft is provided with a positioning shaft rear cover, and a positioning shaft bushing is arranged between the positioning shaft and the inner wall of the positioning shaft support.