CN218118679U - Multi-section sleeve speed control regulating valve - Google Patents

Abstract

The utility model provides a multistage formula sleeve accuse quick adjustment valve, it is opening the back, thereby the fluid realizes step-down accuse speed through the multistage throttle, has the difficult emergence of sufficient clearance and blocks up moreover between case and the sleeve, opens more smoothly simultaneously, and the processing cost is also less. It includes the valve body, the valve rod, the case, sleeve and disk seat, be equipped with the assembly chamber in the valve body, the assembly intracavity is and be located and install the sleeve on the disk seat, the sleeve cavity is and built-in to have the case, the case bottom is equipped with the sealed face of sealed complex with the disk seat, it is protruding to be equipped with the annular of multilayer along vertical direction in the sleeve, the bellied upper and lower end of annular is equipped with the recess respectively, the case is including being located the decompression section and the sealed piece that sealed face top set gradually, the inside sunken breach of multilayer has been seted up along vertical direction in the decompression section, the position of adjacent two-layer breach is crisscross from top to bottom, when the governing valve is opened, two adjacent recesses about every breach communicates respectively, the water conservancy diversion hole with the outside intercommunication of sleeve is still seted up on sleeve upper portion.

Description

Multi-section type sleeve speed control regulating valve

Technical Field

The utility model relates to a sleeve valve technical field specifically is a quick governing valve of multistage formula sleeve accuse.

Background

At present, in the industries of petroleum, chemical industry, medicine, metallurgical electric power and the like, a sleeve valve is widely applied by virtue of the advantages of high capacity, excellent dynamic stability, high adjustment precision, diversified adjustment curves and the like, and the sleeve valve is a high-performance adjustment valve suitable for harsh working conditions. The common structure is as shown in fig. 1, which comprises a valve body 1, a valve seat 2, a sleeve 3, a valve core 4 and a valve rod 16, wherein an assembly cavity is arranged in the valve body 1, the sleeve, the valve core and the valve seat are respectively positioned in the assembly cavity, the valve rod extends into the assembly cavity and is connected with the valve core, a fluid inlet channel A and a fluid outlet channel B are arranged on the side part of the valve body, the fluid inlet A is connected with the bottom of the assembly cavity in the valve body, the valve seat is also arranged at the bottom of the assembly cavity, when the valve is closed, the sealing is realized by the contact of the bottom of the valve core and the valve seat, when the valve is opened, the valve core is driven by the valve rod to move upwards, fluid enters the sleeve and flows out through a through hole on the side part of the sleeve, and the common sleeve valve can only control whether the fluid can reduce the pressure of the fluid.

Under the operating mode to high pressure difference (pressure difference is greater than 10MPa around the valve), adopt the sleeve valve of multistage decompression structure mostly, the most common has the multistage decompression of tandem, the multistage decompression of lamination labyrinth, above-mentioned structure has certain effect to the decompression, but to the dirty high pressure difference operating mode of some media, the sleeve easily takes place to block up, and then appears defects such as cavitation, cavitation and noise are big. At present, a sleeve valve adopts a structure combining a main seal and a plurality of auxiliary seals, a main seal structure is formed between a valve core end part and a sleeve end part of the sleeve valve, a plurality of annular bulges are arranged in a sleeve along the vertical direction, and the annular bulges are contacted with the valve core to form a plurality of auxiliary seal structures.

SUMMERY OF THE UTILITY MODEL

To some sleeve valves easily block up, some sleeve valves that adopt major-minor seal structure easily wear and tear, be unfavorable for opening, the higher problem of processing cost, the utility model provides a multistage formula sleeve accuse quick regulating valve, its is opening the back, thereby the fluid realizes step-down accuse speed through the multistage throttle, has the difficult emergence in sufficient clearance between case and the sleeve and blocks up moreover, opens more smoothly simultaneously, and processing cost is also less.

The technical scheme is as follows: the utility model provides a multistage formula sleeve accuse quick-adjusting valve, its includes valve body, valve rod, case, sleeve and disk seat, is equipped with the assembly chamber in the valve body, the disk seat is installed to assembly chamber bottom, the assembly intracavity is and be located install on the disk seat the sleeve, the sleeve cavity is and built-in have the case, the case bottom be equipped with the sealed face of sealed complex of disk seat, the valve rod is followed the valve body top stretches into the assembly chamber and with the case is connected, be equipped with multilayer annular arch along vertical direction in the sleeve, annular arch's upper and lower end is equipped with recess, its characterized in that respectively: the valve core comprises a pressure reduction section and a sealing block, wherein the pressure reduction section and the sealing block are sequentially arranged above the sealing surface, multiple layers of inwards-concave notches are formed in the pressure reduction section in the vertical direction, the positions of two adjacent notches are staggered up and down, when the regulating valve is opened, each notch is respectively communicated with two adjacent grooves up and down, the upper portion of the sleeve is further provided with a flow guide hole communicated with the outside of the sleeve, and when the regulating valve is closed, the sealing block is used for plugging the flow guide hole.

It is further characterized in that:

the bottom of the valve seat forms sealing with the valve body through a sealing gasket;

the top of the valve body is connected with a valve cover through a flange bolt and a flange nut, a sealing gasket is arranged between the valve cover and the valve body, the valve cover and the valve body are enclosed to form the assembly cavity, and the valve rod penetrates through the valve cover and extends into the assembly cavity;

a packing installation cavity is arranged between the valve cover and the valve rod, a packing pad, a packing spacer bush and a packing gland are sequentially filled in the packing installation cavity from bottom to top, a packing pressing plate is pressed on the top of the packing gland, and the packing pressing plate is connected with the top of the valve cover through a packing nut and a packing bolt;

a fluid inlet channel and a fluid outlet channel are respectively arranged on two sides of the valve body, the fluid inlet channel is communicated with the bottom of the assembling cavity, and the fluid outlet channel is communicated with the flow guide hole;

and a sealing structure is not formed between the valve core and the annular bulge.

The utility model has the advantages that: when the governing valve is opened fluid and is got into the sleeve, can be crooked ground at a plurality of recesses, the multistage formula's that the breach constitutes step down the pressure structure in flow, be difficult for blockking up, thereby realize multistage step down, the breach of crisscross setting can further improve step down the effect about simultaneously, rely on the sealed face of case and disk seat to seal when the governing valve is closed, sealed piece carries out the shutoff to the water conservancy diversion hole, can enough guarantee sealing performance like this, just can not require the leakproofness between case and the annular arch, thereby reduce the frictional force that produces when opening, be convenient for open and reduced the processing cost.

Drawings

FIG. 1 is a schematic view of a conventional sleeve valve configuration;

FIG. 2 is a schematic view of the closed structure of the present invention;

FIG. 3 is a schematic view of the opening structure of the present invention;

FIG. 4 is an enlarged view of FIG. 3 at C;

fig. 5 is a schematic cross-sectional view of the present invention;

FIG. 6 is a schematic view of a sleeve structure;

FIG. 7 is a schematic view of the structure of the valve core and the valve rod;

in the figure, 1-valve body, 2-valve seat, 3-stepped sleeve, 301-annular bulge, 302-guide hole, 4-valve core, 401-notch, 402-sealing surface, 403-sealing block, 5-valve cover, 6-sealing gasket, 7-flange bolt, 8-flange nut, 9-packing pad, 10-packing, 11-packing spacer bush, 12-packing gland, 13-packing press plate, 14-packing nut, 15-packing bolt and 16-valve rod.

Detailed Description

As shown in fig. 2, 3 and 5, the multi-section sleeve speed control regulating valve comprises a valve body 1, a valve rod 16, a valve core 4, a sleeve 3 and a valve seat 2, wherein an assembly cavity is arranged in the valve body 1, the valve seat 2 is arranged at the bottom of the assembly cavity, and a seal is formed between the bottom of the valve seat 2 and the valve body 1 through a seal gasket 6; the assembly cavity is internally provided with a sleeve 3 positioned on a valve seat 2, the sleeve 3 is hollow and is internally provided with a valve core 4, a graph 7 is combined, the bottom of the valve core 4 is provided with a sealing surface 402 in sealing fit with the valve seat, two sides of the valve body 1 are respectively provided with a fluid inlet channel A and a fluid outlet channel B, the fluid inlet channel is communicated with the bottom of the assembly cavity, a valve rod 16 extends into the assembly cavity from the top of the valve body 1 and is connected with the valve core 4, the graph 6 is combined, a plurality of layers of annular bulges 301 (more than or equal to 2 layers) are arranged in the sleeve 3 along the vertical direction, the upper end and the lower end of each annular bulge 301 are respectively provided with a groove, the graph 7 is combined, the valve core 4 comprises a pressure reduction section and a sealing block 403 which are sequentially arranged above the sealing surface 402, the pressure reduction section is provided with a plurality of notches 401 which are inwards recessed along the vertical direction, the positions of two adjacent notches 401 are staggered up and down (for example, the interval is 90 degrees), when the regulating valve is opened, each notch 401 is respectively communicated with two adjacent grooves, the upper portion is communicated with the upper portion and the upper portion of the upper portion and the lower portion of the upper portion of the sleeve 6, the upper portion of the sleeve 3 is also provided with a flow guide hole 302 communicated with the outer portion of the sleeve 3, the flow guide hole, the flow passage is communicated with the flow guide hole, when the regulating valve is closed, the flow hole, and the sealing block 403 is used for blocking the flow hole 302.

When the valve is closed, as shown in fig. 2, the sealing surface 402 of the valve core 4 is matched with the valve seat 2 to prevent fluid from entering the sleeve 3, the sealing block 403 blocks the flow guide hole 302 to prevent the fluid from flowing out of the sleeve 3, the sealing performance can be a V-grade hard sealing structure or a VI-grade soft sealing structure, the double sealing performance is good, and the sealing block is adopted to block the flow guide hole, so that a sealing structure between the valve core and the annular bulge is not needed, the length of the sealing block is small, the influence on the opening of the valve is small, and meanwhile, the sealing performance between the valve core and the annular bulge is not required, so that the production and processing of the valve core are facilitated; when the valve is opened, as shown in fig. 4, fluid firstly enters the bottom groove after passing through the valve seat and then is blocked by the annular bulge to change the direction to enter the notch, and then enters the upper groove after being blocked by the upper part of the notch.

Specifically, 1 top of valve body is connected with valve gap 5 through flange bolt 7 and flange nut 8, is equipped with seal ring 6 between valve gap 5 and the valve body 1, encloses to close through valve gap 5 and valve body 1 and forms the assembly chamber, and valve rod 16 runs through valve gap 5 and stretches into the assembly intracavity, and valve rod and case can the integral type processing.

In order to ensure the sealing performance of the valve, a packing installation cavity is arranged between the valve cover 5 and the valve rod 16, a packing pad 9, a packing 10, a packing spacer 11 and a packing gland 12 are sequentially filled in the packing installation cavity from bottom to top, a packing pressing plate 13 is pressed on the top of the packing gland 12, and the packing pressing plate 13 is connected with the top of the valve cover 5 through a packing nut 14 and a packing bolt 15.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention should be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims (6)

1. The utility model provides a multistage formula sleeve accuse quick-adjusting valve, its includes valve body, valve rod, case, sleeve and disk seat, is equipped with the assembly chamber in the valve body, the disk seat is installed to assembly chamber bottom, the assembly intracavity is and be located install on the disk seat the sleeve, the sleeve cavity is and built-in have the case, the case bottom be equipped with the sealed face of sealed complex of disk seat, the valve rod is followed the valve body top stretches into the assembly chamber and with the case is connected, be equipped with multilayer annular arch along vertical direction in the sleeve, annular arch's upper and lower end is equipped with recess, its characterized in that respectively: the valve core comprises a pressure reduction section and a sealing block, wherein the pressure reduction section and the sealing block are sequentially arranged above the sealing surface, multiple layers of inwards-concave notches are formed in the pressure reduction section in the vertical direction, the positions of two adjacent notches are staggered up and down, when the regulating valve is opened, each notch is respectively communicated with two adjacent grooves up and down, the upper portion of the sleeve is further provided with a flow guide hole communicated with the outside of the sleeve, and when the regulating valve is closed, the sealing block is used for plugging the flow guide hole.

2. The multi-section sleeve speed control regulating valve according to claim 1, wherein: and the bottom of the valve seat forms sealing with the valve body through a sealing gasket.

3. The multi-section sleeve speed control regulating valve according to claim 1, wherein: the valve body top is connected with the valve gap through flange bolt and flange nut, the valve gap with be equipped with seal ring between the valve body, through the valve gap with the valve body encloses to close and forms the assembly chamber, the valve rod runs through the valve gap stretches into the assembly intracavity.

4. The multi-section sleeve speed control regulating valve according to claim 3, wherein: the packing device comprises a valve cover, a valve rod, a packing mounting cavity, a packing gasket, a packing spacer bush and a packing gland, wherein the packing mounting cavity is arranged between the valve cover and the valve rod, the packing gasket, the packing spacer bush and the packing gland are sequentially filled in the packing mounting cavity from bottom to top, a packing pressing plate is pressed on the top of the packing gland, and the packing pressing plate is connected with the top of the valve cover through a packing nut and a packing bolt.

5. The multi-section sleeve speed control regulating valve according to claim 1, wherein: and a fluid inlet channel and a fluid outlet channel are respectively arranged on two sides of the valve body, the fluid inlet channel is communicated with the bottom of the assembling cavity, and the fluid outlet channel is communicated with the diversion hole.

6. The multi-section sleeve speed control valve according to any one of claims 1-5, wherein: and a sealing structure is not formed between the valve core and the annular bulge.

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