CN213271100U

CN213271100U - Reducing type all-welded double-valve-seat powder slag special-purpose fixed ball valve

Info

Publication number: CN213271100U
Application number: CN202020060744.3U
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: 2021-05-25
Anticipated expiration: 2030-01-02

Abstract

The utility model discloses a special fixed ball valve of undergauge formula all-welded double-disk seat powder sediment, including the valve body, set up the spheroid in the valve body and weld in the disk seat at valve body both ends, a flange is all installed to the outer end of every disk seat, and the aperture of spheroidal latus rectum at least than flange's latus rectum one grade less, 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 discloses can satisfy various abominable operating mode demands, it is not sealed, the short-life difficult problem at powder sediment and abominable medium pipeline valve to explain, for control dusty gas, contain granule liquid and solid powder pipe-line system headstock gear valve provide the solution, fill the blank of pipeline transport powder sediment control flap technique, be applicable to the operating mode that the ratio is not high of tiny particulate matter content in the medium, like the water sediment system of blast furnace, have high performance, high benefit, low maintenance rate, low-cost advantage.

Description

Reducing type all-welded double-valve-seat powder slag special-purpose fixed ball valve

Technical Field

The utility model relates to a control flap technical field especially relates to a special fixed ball valve of undergauge formula all-welded double-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 plurality of factories which originally can raise dust at will are required to be completely closed and changed into pipeline transportation, and a plurality of transported particles, pipeline powder and the like are generated at random. Especially, in the existing iron works injection system and slag flushing system, the media in the injection system mainly comprise coal powder, and the media are easy to adhere and block, so that the switch is not in place, and washing inner leakage is formed. Both of these conditions are extremely harsh.

However, the existing ball valve with one-way sealing structure can not meet the sealing requirement of the above severe working condition, and can not normally function under the negative pressure condition, so how to provide a valve which is suitable for the negative pressure system and can meet the working condition requirements of the coal injection system and the slag flushing system is a technical problem to be urgently rescued at present.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a rational in infrastructure, sealing performance is good, long service life, with low costs short type double-disk seat powder sediment special fixed ball valve, this ball valve is applicable to the operating mode that fine particulate matter content accounts for ratio not high in the medium, like the grain slag system of blast furnace to and the negative pressure system of environment dust removal, and also can satisfy the operating mode demand of iron works towards sediment system and coal injection system simultaneously.

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

the utility model provides a reducing type all-welded double-valve-seat powder slag special fixed ball valve, which comprises a valve body and a ball body arranged in the valve body, wherein two ends of the valve body are respectively welded with a valve seat, the top of the valve body is provided with a transmission shaft, the top end of the transmission shaft is used for connecting an actuator, and the bottom end of the transmission shaft is connected with the ball body; and the outer ends of the two valve bodies are respectively provided with a connecting flange, and the drift diameter of the ball body is at least smaller than that of the connecting flange by one grade of caliber.

Optionally, the valve seat is connected to the valve body by a valve seat connector.

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 includes a sealing ring and a ring support, the sealing ring is supported against the outer edge of the valve body through the ring support, and a metal sealing ring is further 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 undergauge formula all-welded double-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, is particularly useful for negative pressure system, has explain that there is not sealed, the short life difficult problem at powder sediment and abominable medium pipeline valve, for control dusty gas, contain granule liquid and solid powder pipe-line system headstock gear valve provide solution, has filled the blank of pipeline transport powder sediment control flap technique. The fixed ball valve special for reducing all-welded double-valve-seat powder slag is perpendicular to pipeline installation, the ball valve is suitable for the working condition that the proportion of fine particles in a medium is not high, such as a water slag system of a blast furnace, a negative pressure system for environmental dust removal, a slag flushing system of an iron works and a coal injection system, a central line structure in a butterfly valve structure is arranged in a reducing mode, certain drift diameter loss can be brought, the fixed ball valve can be used for replacing a butterfly valve under the same working condition, and the fixed ball valve has the advantages of being high in performance, high in benefit, low in maintenance rate and low in 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 double-seat powder slag special-purpose 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 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 reducing type all-welded double-seat powder slag special fixed ball valve, which includes a valve body 1 and a ball body 2 arranged inside the valve body 1, two ends of the valve body 1 are respectively provided with a valve seat 3, the top of the valve body 1 is provided with a transmission shaft 5, the top end of the transmission shaft 5 is used for connecting an actuator, the actuator is used for driving the transmission shaft 5 to rotate, and the bottom end of the transmission shaft 5 is connected with the ball body 2; the outer end of each valve seat 3 is integrally formed with a connecting flange 4, and the drift diameter of the ball 2 is at least one grade of caliber smaller than that of the connecting flange 4. 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 connecting flange 4 is 300mm, the sphere 2 is in a sphere structure with a nominal inner diameter of 250 mm.

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 retaining ring 13 is disposed between the valve seat 3 and the ball 2, a combined sealing member is disposed between the valve seat retaining ring 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 against the outer edge of the valve body 1 under the action of the ring holder; among them, 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 further provided between the seal ring 11 and the valve seat retainer 13.

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 undergauge formula all-welded double-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, it provides the 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, high performance has, the advantage of high benefit.

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 problems of no sealing and short service life of the powder slag and severe medium pipeline valve are solved, a solution is provided for controlling the on-off device valve of the dust-containing gas, the particle-containing liquid and the solid powder pipeline system, the blank of the pipeline conveying powder slag control valve technology is filled, and the pipeline conveying powder slag control valve has the advantages of high performance and high benefit.

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 reducing formula all-welded double-disk seat powder sediment which characterized in that: the hydraulic control valve comprises a valve body and a ball body arranged in the valve body, wherein two ends of the valve body are respectively welded with a valve seat, the top of the valve body is provided with a transmission shaft, the top end of the transmission shaft is used for connecting an actuator, and the bottom end of the transmission shaft is connected with the ball body; the outer ends of the two valve bodies are respectively provided with a connecting flange, and the drift diameter of the ball body is lower than that of the connecting flange by one grade; the actuator is a pneumatic drive actuator or a hydraulic drive actuator; and the reducing type all-welded double-valve-seat powder slag special fixed ball valve can replace a butterfly valve under the same working condition.

2. The reducing all-welded double-valve-seat powder slag special fixed ball valve according to claim 1, characterized in that: the valve seat is connected with the valve body through a valve seat connecting piece.

3. The reducing all-welded double-valve-seat powder slag special fixed ball valve 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 reducing all-welded double-valve-seat powder slag special fixed ball valve 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 reducing all-welded double-valve-seat powder slag special fixed ball valve according to claim 4, characterized in that: 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 reducing all-welded double-valve-seat powder slag special fixed ball valve 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 reducing all-welded double-valve-seat powder slag special fixed ball valve according to claim 6, characterized in that: the combined sealing element comprises a sealing ring and a ring support, the sealing ring is supported against the outer edge of the valve body through the ring support, and a metal sealing ring is arranged between the valve seat retainer ring and the ring support.

8. The reducing all-welded double-valve-seat powder slag special fixed ball valve according to claim 1, characterized in that: the transmission shaft is connected with the ball body in a key mode.

9. The reducing all-welded double-valve-seat powder slag special fixed ball valve 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.