CN112049963A - Sealing structure of sliding column type sliding valve - Google Patents
Sealing structure of sliding column type sliding valve Download PDFInfo
- Publication number
- CN112049963A CN112049963A CN201910485752.4A CN201910485752A CN112049963A CN 112049963 A CN112049963 A CN 112049963A CN 201910485752 A CN201910485752 A CN 201910485752A CN 112049963 A CN112049963 A CN 112049963A
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- China
- Prior art keywords
- sealing
- sliding column
- valve body
- rings
- fluid
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
- F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
- F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
- F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
- F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
- F16K11/0712—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising particular spool-valve sealing means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
- F16K3/00—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing
- F16K3/22—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution
- F16K3/24—Gate valves or sliding valves, i.e. cut-off apparatus with closing members having a sliding movement along the seat for opening and closing with sealing faces shaped as surfaces of solids of revolution with cylindrical valve members
- F16K3/243—Packings
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Sliding Valves (AREA)
Abstract
The invention discloses a sealing structure of a sliding column type sliding valve, which comprises a valve body, a sliding column and a sealing element; the valve body is internally provided with a sealing channel, one side of the valve body is provided with a fluid inlet, the other side of the valve body is provided with two fluid outlets, and the fluid inlets and the fluid outlets are arranged in a staggered manner and are communicated with the sealing channel; sealing elements are arranged between the fluid inlet and the two fluid outlets and comprise sealing rings and sealing rings, the outer rings of the sealing rings are attached to the inner wall of the sealing channel, and the inner rings of the sealing rings are matched with the sealing rings; the sliding column slides in the sealed channel, a plurality of convex parts and concave parts are arranged on the sliding column, and the convex parts and the concave parts are sequentially arranged in a staggered manner; the sealing ring is sealed with the inner wall of the cavity of the valve body in a hard mode, and the sealing ring is sealed with the sliding column in a soft mode, so that the problem of processing technology can be effectively solved, burrs exist on the inner wall of the cavity of the valve body, the sealing piece is damaged in use, the requirement on the size between components is low, and the production is easy.
Description
Technical Field
The invention relates to the technical field of valves, in particular to a sealing structure of a sliding column type sliding valve.
Background
The slide valve is a flow dividing valve which utilizes a valve core (plunger piston and valve clack) to slide on a sealing surface and changes the positions of fluid inlet and outlet channels to control the flow direction of fluid. Slide valves are commonly used in steam engines, hydraulic and pneumatic devices, to allow the movement mechanism to achieve a predetermined direction and stroke of motion or to achieve automatic continuous operation.
The sealing structure of the existing sliding column type sliding valve generally adopts two modes of fixing a sealing element in an inner cavity of a valve body by a valve sleeve or directly installing the sealing element on a sliding column; the mode that the sealing element is fixed in the inner cavity of the valve body by the valve sleeve is adopted, the requirements on the sizes of the valve sleeve and the sealing element are high (the movement resistance of a sliding column is increased when the fit interference between the valve sleeve and the sealing element is too large, and leakage is generated when the fit interference is too small), and the problem of difficulty in processing and production exists; the mode that the sealing element is directly arranged on the sliding column is adopted, and the sealing element slides in the valve body along with the sliding column to generate friction, so that the sealing element is damaged due to burrs in the valve body; affecting the service life of the valve.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a sealing structure of a sliding column type sliding valve.
In order to achieve the purpose, the invention provides the following technical scheme:
a sealing structure of a sliding column type sliding valve comprises a valve body, a sliding column and a sealing element;
the valve body is internally provided with a sealing channel, one side of the valve body is provided with a fluid inlet, the other side of the valve body is provided with two fluid outlets, and the fluid inlets and the fluid outlets are arranged in a staggered manner and are communicated with the sealing channel;
sealing elements are arranged between the fluid inlet and the two fluid outlets and comprise sealing rings and sealing rings, the outer rings of the sealing rings are attached to the inner wall of the sealing channel, and the inner rings of the sealing rings are matched with the sealing rings;
the sliding column slides in the sealed channel, a plurality of convex parts and concave parts are arranged on the sliding column, and the convex parts and the concave parts are sequentially arranged in a staggered manner; the fluid inlet is matched with the boss through a sealing piece to block the communication between the fluid inlet and the adjacent fluid outlet.
The invention further provides that: the sealing ring is provided with an annular groove, the inner side wall of the annular groove is provided with a convex rib, the sealing ring is arranged in the annular groove, and the inner ring edge of the sealing ring penetrates out of the annular groove and is matched with the convex part on the sliding column.
The invention further provides that: the sealing ring is made of metal materials, and the sealing ring is made of rubber materials.
The invention has the beneficial effects that: the sliding column type sliding valve adopts the sealing ring made of metal and the sealing ring made of rubber to be matched as a sealing element, the sealing ring is sealed with the inner wall of the sealing channel of the valve body in a hard way, and the sealing ring is sealed with the sliding column in a soft way, so that the problem of processing technology can be effectively avoided, the inner wall of the sealing channel of the valve body is provided with burrs, and the sealing element is damaged in use, and the service life is prolonged; the requirements on the sizes of the components are low, and the production is easy.
Drawings
Fig. 1 is a sectional view of a sealing structure of a spool type slide valve according to the present invention;
fig. 2 is a schematic view showing a sealing member of a sealing structure of a spool type sliding valve according to the present invention;
fig. 3 is a schematic view showing a seal ring of a seal structure of a spool type slide valve according to the present invention;
FIG. 4 is a schematic view of a spool structure of a sealing structure of a spool type slide valve according to the present invention;
description of reference numerals: 1. a valve body; 11. sealing the channel; 12. a fluid outlet; 13. a fluid inlet; 2. a traveler; 21. a boss portion; 22. a recessed portion; 3. a seal member; 31. a seal ring; 311. a ring groove; 312. a rib is protruded; 32. and (5) sealing rings.
Detailed Description
An embodiment of a sealing structure of a spool type slide valve according to the present invention will be described in further detail with reference to fig. 1 to 4.
A sealing structure of a sliding column type sliding valve comprises a valve body 1, a sliding column 2 and a sealing element 3;
a sealed channel 11 is arranged in the valve body 1, one side of the valve body is provided with a fluid inlet 13, the other side of the valve body is provided with two fluid outlets 12, and the fluid inlets 13 and the fluid outlets 12 are arranged in a staggered manner and communicated with the sealed channel 11;
wherein, a sealing element 3 is arranged between the fluid inlet 13 and the two fluid outlets 12, the sealing element 3 comprises a sealing ring 31 and a sealing ring 32, the outer ring of the sealing ring 31 is attached to the inner wall of the sealing channel 11, and the inner ring of the sealing ring 31 is matched with the sealing ring 32; by adopting the matching of the sealing ring 31 and the sealing ring 32, the sealing ring 31 is sealed with the inner wall of the sealing channel 11 hard, and the sealing ring 32 is sealed with the sliding column 2 soft, so that the difficulty of the processing technology can be effectively reduced, the space in the sealing channel 11 is larger, and the flow rate of the fluid is faster.
The sliding column 2 slides in the sealed channel 11, a plurality of convex parts 21 and concave parts 22 are arranged on the sliding column 2, and the convex parts 21 and the concave parts 22 are sequentially arranged in a staggered manner; the fluid inlet 13 is matched with the convex part 21 through the sealing piece 3 to block the communication with the adjacent fluid outlet 12; the sealing structure can ensure that the sealing ring 32 can be well protected and the service life of the slide valve can be prolonged only by processing the slide column 2 smoothly (compared with the way that the inner wall of the sealing channel 11 is processed smoothly and easily);
because the sealing element 3 is arranged in the sealing channel 11 between the fluid inlet 13 and the fluid outlet 12, and the fluid inlet 13 and the fluid outlet 12 are respectively positioned at two sides of the sealing channel 11, when the convex part 21 in the sliding column 2 slides into the sealing ring 32, the two are tightly matched, and the fluid flowing into the sealing channel 11 at one side of the sealing element 3 from the fluid inlet 13 can be blocked from flowing out from the fluid outlet 12;
when the recess 22 in the spool 2 slides onto the sealing ring 32, there is a gap between the sealing element 3 and the spool 2, so that fluid in the sealing channel 11 can flow out of the fluid outlet 12.
The sealing ring 31 is provided with a ring groove 311, the inner side wall of the ring groove 311 is provided with a convex rib 312, the sealing ring 32 is arranged in the ring groove 311, and the inner ring edge of the sealing ring 32 penetrates out of the ring groove 311 and is matched with the convex part 21 on the sliding column 2; so that the seal ring 32 can be more firmly fixed in the seal ring 31.
The sealing ring 31 is made of steel metal, and the sealing ring 32 is made of rubber; the sealing effect of the sealing element 3 is better, and the service life is longer.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (3)
1. A sealing structure of a sliding column type sliding valve is characterized in that: comprises a valve body, a sliding column and a sealing element;
the valve body is internally provided with a sealing channel, one side of the valve body is provided with a fluid inlet, the other side of the valve body is provided with two fluid outlets, and the fluid inlets and the fluid outlets are arranged in a staggered manner and are communicated with the sealing channel;
sealing elements are arranged between the fluid inlet and the two fluid outlets and comprise sealing rings and sealing rings, the outer rings of the sealing rings are attached to the inner wall of the sealing channel, and the inner rings of the sealing rings are matched with the sealing rings;
the sliding column slides in the sealed channel, a plurality of convex parts and concave parts are arranged on the sliding column, and the convex parts and the concave parts are sequentially arranged in a staggered manner; the fluid inlet is matched with the boss through a sealing piece to block the communication between the fluid inlet and the adjacent fluid outlet.
2. The seal structure of a spool type slide valve according to claim 1, wherein: the sealing ring is provided with an annular groove, the inner side wall of the annular groove is provided with a convex rib, the sealing ring is arranged in the annular groove, and the inner ring edge of the sealing ring penetrates out of the annular groove and is matched with the convex part on the sliding column.
3. A seal structure of a spool type slide valve according to claim 1 or 2, wherein: the sealing ring is made of metal materials, and the sealing ring is made of rubber materials.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485752.4A CN112049963A (en) | 2019-06-05 | 2019-06-05 | Sealing structure of sliding column type sliding valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910485752.4A CN112049963A (en) | 2019-06-05 | 2019-06-05 | Sealing structure of sliding column type sliding valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112049963A true CN112049963A (en) | 2020-12-08 |
Family
ID=73609697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910485752.4A Pending CN112049963A (en) | 2019-06-05 | 2019-06-05 | Sealing structure of sliding column type sliding valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112049963A (en) |
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2019
- 2019-06-05 CN CN201910485752.4A patent/CN112049963A/en active Pending
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