CN215371025U - One-way valve plane sealing mechanism - Google Patents
One-way valve plane sealing mechanism Download PDFInfo
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- CN215371025U CN215371025U CN202120929299.4U CN202120929299U CN215371025U CN 215371025 U CN215371025 U CN 215371025U CN 202120929299 U CN202120929299 U CN 202120929299U CN 215371025 U CN215371025 U CN 215371025U
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- sealing gasket
- soft sealing
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- valve seat
- plane
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Abstract
The invention discloses a one-way valve plane sealing mechanism which comprises a valve seat, a valve core, a compression spring, a guide sleeve and a guide sleeve fixing screw, wherein the valve seat is formed by assembling a valve seat body, a soft sealing gasket gland, a soft sealing gasket and a plane sealing ring, the soft sealing gasket is positioned between the valve seat body and the soft sealing gasket gland, and sealing is formed by contacting a sealing plane at the front end of the valve core with a bulge on the soft sealing gasket. The invention has simple mechanism design and easy processing and detection, and solves the defects of the prior art.
Description
Technical Field
The invention relates to the technical field of sealing of one-way valves, in particular to a plane sealing mechanism of a one-way valve.
Background
Check valves are widely used in fluid systems. The sealing structure of the prior one-way valve mainly comprises two main forms of ball sealing and conical surface soft sealing. The ball seal is formed by hard contact between the steel ball and the sealing surface on the valve seat, the specific pressure of the seal is high, but the requirement on the machining precision of the valve seat is high, and the requirement of common equipment is difficult to achieve.
The soft sealing form of conical surface is the common soft sealing form of check valve, adopt and increase a soft seal groove on the outer conical surface intermediate position of metal case, laminate through case outer conical surface and disk seat inner conical surface, form by soft seal between case and disk seat and seal, this kind of seal structure processing is easy than ball seal structure, but because the disk seat needs directly to process out in the valve body hole, when the hole is less on the valve body, be difficult to guarantee roughness and the angular tolerance of disk seat inner conical surface, also be difficult to detect the size of disk seat after the processing is accomplished.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a plane sealing mechanism of a one-way valve, which adopts a separated valve seat, so that the valve seat is not required to be processed in an inner hole of a valve body, the production of the one-way valve is simpler and easier, the size detection is easy, and the defects of the prior art are overcome.
The technical scheme is as follows:
in order to solve the above problems, the present invention provides the following technical solutions: a one-way valve face seal mechanism, comprising:
the valve core, one end of the said valve core is a sealed plane, is a small step round behind the sealed plane, is a large step round behind the small step round, the large step round is inside to be an axial step blind hole to communicate with radial hole on the small step round;
the valve seat consists of a soft sealing gasket, a plane sealing ring, a valve seat body and a soft sealing gasket gland;
the inner hole of the soft sealing gasket is a through hole, the outer diameter of the through hole is cylindrical, the bottom surface of the through hole is a plane, a semicircular bulge is arranged at the position close to the middle of the top surface, and the inner side and the outer side of the bulge are both planes;
the plane sealing ring is circular, and the section of the plane sealing ring is circular;
the soft sealing gasket gland is cylindrical in shape, an inner hole is a step through hole, the inner diameter of a large step hole is matched with the outer diameter of the soft sealing gasket, and the inner diameter of a small step hole is smaller than the outer diameter of the soft sealing gasket and larger than the diameter of the outer side of the bulge of the soft sealing gasket;
the center of the valve seat body is provided with a flow passage through hole, one end surface of the valve seat body is provided with a plane sealing ring groove which is matched with the plane sealing ring, the other end of the valve seat body is provided with a small step circle, the outer diameter of the small step circle is smaller than the inner diameter of the bulge on the soft sealing gasket, the back of the small step circle is provided with a soft sealing gasket groove, the groove diameter is matched with the inner hole of the soft sealing gasket, the other side of the soft sealing gasket groove is provided with a step, the outer diameter of the step is matched with the inner diameter of the large step hole of the soft sealing gasket gland, and the outer diameter of the back of the step is the same as the outer diameter of the soft sealing gasket gland;
after the valve seat is assembled, under the condition of no fluid pressure, the top of the soft sealing gasket protrusion is higher than the side surface of the valve seat body and higher than the side surface of the soft sealing gasket pressing cover, and the side surface of the soft sealing gasket pressing cover is lower than the side surface of the valve seat body;
the guide sleeve is an outer cylinder with a step through hole, the outer diameter size of the guide sleeve is consistent with that of the soft sealing gasket gland, the diameter of the inner large step hole is in sliding fit with that of the valve core large step circle, the diameter of the inner small step hole is smaller than that of the valve core large step circle and larger than that of the valve core small step circle, and the length of the inner small step hole is smaller than that of the valve core small step circle;
the compression spring is used for pushing the valve core when no pressure exists in the system, and the sealing plane of the valve core is attached to the bulge of the soft sealing gasket to form sealing;
and the guide sleeve fixing screw is used for fixing the guide sleeve in the valve body, pressing the valve seat through the guide sleeve and supporting the compression spring.
Preferably, the cross section of the plane sealing ring in the valve seat can be square or trapezoid.
Preferably, the cross section of the convex part on the soft sealing gasket in the valve seat can be square or trapezoid.
Preferably, the soft sealing gasket gland in the valve seat can be integrated with the valve seat body.
(III) advantageous effects
Compared with the prior art, the invention has the beneficial effects that: the mechanism of the invention does not need to process a conical valve seat in the inner hole of the valve body, thereby reducing the processing difficulty of the valve seat and simplifying the processing size detection of the one-way valve.
Drawings
FIG. 1 is a schematic view of the sealing mechanism of the present invention in a sealed condition;
FIG. 2 is a schematic view of the valve cartridge configuration of the mechanism of the present invention;
FIG. 3 is a schematic view of the valve seat body structure of the mechanism of the present invention;
FIG. 4 is a schematic view of the construction of the flexible gasket of the mechanism of the present invention;
FIG. 5 is a schematic view of the structure of the soft sealing gasket gland of the mechanism of the present invention;
FIG. 6 is a schematic view of the structure of the guide sleeve of the mechanism of the present invention
FIG. 7 is a schematic view of the assembled valve seat of the mechanism of the present invention;
FIG. 8 is a schematic view of the sealing mechanism of the present invention in an open state;
FIG. 9 guide sleeve set screw for mechanism of the present invention
The reference numerals are explained below:
1 valve core, 2 valve seat bodies, 3 plane sealing rings, 4 soft sealing gaskets and 5 compression springs
6 guide sleeve, 7 soft sealing gasket gland, 8 valve body and 9 guide sleeve fixing screw
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the present invention will be further described with reference to the following embodiments.
Fig. 2 shows a structure diagram of the valve core 1, wherein 11 is a sealing plane, 14 and 16 are axial step blind holes inside the valve core, 121 is a radial flow passage hole on a small step excircle 12, 122 is a limiting step plane on the valve core, 13 is a large step excircle, and 15 is an action surface of a compression spring 5;
fig. 3 shows a schematic structural view of the valve seat body 2, wherein 21 is a plane seal ring groove on the rear end face 27 for mounting the plane seal ring 3 (see fig. 1, 7 and 8); 22 is a front end face; 23 is a soft sealing gasket groove used for installing a soft sealing gasket 4; the small step 24 at the back of the groove is matched with an inner hole 72 of the soft sealing gasket gland 7 and used for fixing and pressing the soft sealing gasket 4; the outer diameter of the front end small step 28 is smaller than the inner diameter of the protrusion 42 of the soft sealing gasket 4;
fig. 4 is a schematic structural view of the soft gasket 4, wherein the bottom surface 41 is a plane, the top surface is provided with a semicircular protrusion 42, both sides 43 and 44 of the protrusion 42 are flat, and an inner hole 45 is matched with the soft gasket groove 23 on the valve seat body 2;
FIG. 5 is a schematic structural view of the gland 7 of the soft sealing gasket, in which the diameter of the outer circle 73 is the same as the diameter of the upper outer circle 25 of the valve seat body 2, the inner diameter 72 is matched with the outer diameter of the step 24 on the valve seat body 2, and the diameter of the hole 71 is larger than the outer diameter of the protrusion 42 of the soft sealing gasket 4;
fig. 6 is a schematic structural diagram of the guide sleeve 6, when being installed, the front end face 65 is attached to the end face 74 of the soft sealing gasket gland 7, the diameter of the outer circle 61 is consistent with the diameter of the outer circle 73 of the soft sealing gasket gland 7, the diameter of the inner hole 63 is in sliding fit with the diameter of the outer circle 13 of the valve core 1, the step 64 is used for limiting the position of the valve core 1, so as to prevent the front end face 22 of the valve seat body 2 from being damaged by the sealing plane 11 of the valve core 1 under high pressure, the step hole 62 is used for controlling the flow area of the check valve, and the length of the step hole 62 is smaller than the length of the small step 12 of the valve core 1, so as to ensure that the soft sealing gasket 4 can form sealing between the sealing plane 11 of the valve core 1 and the front end face 22 of the valve seat body 2 under a pressure state;
fig. 7 is a schematic view of the assembled valve seat, in which the planar sealing ring 3 and the soft sealing gasket 4 are both protruded from the end faces, the top of the protrusion 42 of the soft sealing gasket 4 is higher than the front end face 22 of the valve seat body 2 and higher than the end face 74 of the soft sealing gasket gland 7, and the end face 74 of the soft sealing gasket gland 7 is also lower than the front end face 22 of the valve seat body 2, so as to ensure that the sealing plane 11 of the valve element 1 is firstly contacted with the front end face 22 of the valve seat body 2 rather than the end face 74 of the soft sealing gasket gland 7 in a pressure state;
fig. 1 is a schematic diagram of the sealing structure of the present invention in a sealing state, showing the mutual positions of the parts of the structure of the present invention when there is no internal pressure, the valve seat body 2 and the valve body 8 are sealed by the planar sealing ring 3, the valve core 1 and the valve seat body 2 are sealed by the soft sealing gasket 4, and the guide sleeve 6 fixes the soft sealing gasket gland 7 and the valve seat body 2 in the inner hole of the valve body 8 by the guide sleeve fixing screw 9.
FIG. 8 shows a schematic view of the sealing mechanism of the present invention in an open state;
fig. 9 shows a schematic view of the guide sleeve fixing screw 9, 91 is an external thread matching with an internal thread of the opening of the valve body 8, an end surface 92 is used for pressing the guide sleeve 6 on the one hand and also for supporting the compression spring 5 on the other hand, and 93 is an internal flow passage through hole.
The specific working principle is as follows:
the invention relates to a one-way valve plane sealing mechanism, which is shown in figure 1, wherein a valve seat part consists of a valve seat body 2, a soft sealing gasket 4, a soft sealing gasket gland 7 and a plane sealing ring 3, when no pressure exists in the system, a sealing plane 11 of a valve core 1 is contacted with a bulge 42 of the soft sealing gasket 4 in the valve seat under the action of a spring 5, when the pressure on the left side is increased, the bulge 42 of the soft sealing gasket 4 in the valve seat is pressed down by the sealing plane 11 of the valve core 1, and the sealing plane 11 of the valve core 1 is contacted with a front end surface 22 of the valve seat body 2 to form a soft seal;
when the pressure on the right side of the check valve applying the mechanism of the invention is increased as shown in fig. 1, the pressure acts on the sealing plane 11 of the valve core 1, the whole valve core is pushed open towards the left side, the pressure spring 5 is compressed, and the valve is opened as shown in fig. 8.
The above is only a preferred embodiment of the present invention, and it should be noted that the above preferred embodiments should not be considered as limiting the present invention, and the protection scope of the present invention should be subject to the scope defined by the claims. It will be apparent to those skilled in the art that various improvements and modifications can be made without departing from the spirit and scope of the invention, and these improvements and modifications should also be construed as within the scope of the invention.
Claims (1)
1. A one-way valve face seal mechanism, comprising:
the valve core, one end of the said valve core is a sealed plane, is a small step round behind the sealed plane, is a large step round behind the small step round, the large step round is inside to be an axial step blind hole to communicate with radial hole on the small step round;
the valve seat consists of a soft sealing gasket, a plane sealing ring, a valve seat body and a soft sealing gasket gland;
the inner hole of the soft sealing gasket is a through hole, the outer diameter of the through hole is cylindrical, the bottom surface of the through hole is a plane, a semicircular bulge is arranged at the position close to the middle of the top surface, and the inner side and the outer side of the bulge are both planes; the plane sealing ring is circular, and the section of the plane sealing ring is circular; the soft sealing gasket gland is cylindrical in shape, an inner hole is a step through hole, the inner diameter of a large step hole is matched with the outer diameter of the soft sealing gasket, and the inner diameter of a small step hole is smaller than the outer diameter of the soft sealing gasket and larger than the diameter of the outer side of the bulge of the soft sealing gasket; the center of the valve seat body is provided with a flow passage through hole, one end surface of the valve seat body is provided with a plane sealing ring groove which is matched with the plane sealing ring, the other end of the valve seat body is provided with a small step circle, the outer diameter of the small step circle is smaller than the inner diameter of the bulge on the soft sealing gasket, the back of the small step circle is provided with a soft sealing gasket groove, the groove diameter is matched with the inner hole of the soft sealing gasket, the other side of the soft sealing gasket groove is provided with a step, the outer diameter of the step is matched with the inner diameter of the large step hole of the soft sealing gasket gland, and the outer diameter of the back of the step is the same as the outer diameter of the soft sealing gasket gland; after the valve seat is assembled, under the condition of no fluid pressure, the top of the soft sealing gasket protrusion is higher than the side surface of the valve seat body and higher than the side surface of the soft sealing gasket pressing cover, and the side surface of the soft sealing gasket pressing cover is lower than the side surface of the valve seat body;
the guide sleeve is an outer cylinder with a step through hole, the outer diameter size of the guide sleeve is consistent with that of the soft sealing gasket gland, the diameter of the inner large step hole is in sliding fit with that of the valve core large step circle, the diameter of the inner small step hole is smaller than that of the valve core large step circle and larger than that of the valve core small step circle, and the length of the inner small step hole is smaller than that of the valve core small step circle;
the compression spring is used for pushing the valve core when no pressure exists in the system, and the sealing plane of the valve core is attached to the bulge of the soft sealing gasket to form sealing;
and the guide sleeve fixing screw is used for fixing the guide sleeve in the valve body, pressing the valve seat through the guide sleeve and supporting the compression spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120929299.4U CN215371025U (en) | 2021-04-30 | 2021-04-30 | One-way valve plane sealing mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120929299.4U CN215371025U (en) | 2021-04-30 | 2021-04-30 | One-way valve plane sealing mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215371025U true CN215371025U (en) | 2021-12-31 |
Family
ID=79629249
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120929299.4U Active CN215371025U (en) | 2021-04-30 | 2021-04-30 | One-way valve plane sealing mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215371025U (en) |
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2021
- 2021-04-30 CN CN202120929299.4U patent/CN215371025U/en active Active
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