CN216867511U - Stop valve for refrigeration - Google Patents
Stop valve for refrigeration Download PDFInfo
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- CN216867511U CN216867511U CN202122340924.4U CN202122340924U CN216867511U CN 216867511 U CN216867511 U CN 216867511U CN 202122340924 U CN202122340924 U CN 202122340924U CN 216867511 U CN216867511 U CN 216867511U
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- clack
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- valve clack
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Abstract
A stop valve for refrigeration comprises a valve body, a valve clack and a valve rod, wherein a valve clack groove communicated with a steel ball hole is formed in the side edge of the valve clack, the valve clack groove is communicated with a steel ball groove located on the valve rod, one part of steel balls is attached to an attaching surface on the valve clack groove to form a first contact point, and the other part of the steel balls is attached to an attaching surface on the steel ball groove to form a second contact point; the axis between the first contact point and the second contact point is vertical to the binding surface on the valve clack groove and the binding surface on the steel ball groove; the valve rod and valve clack binding face on the upper side of the steel ball, the valve rod and valve clack binding face on the lower side of the steel ball and the axis between the first contact point and the second contact point are positioned on the parallel faces at three different positions. The valve rod is connected with the valve clack through the steel ball structure, and the axial line between the first contact point and the second contact point is the same as the stress direction of the binding surface on the valve clack groove and the binding surface on the steel ball groove, so that the problem that the valve rod is blocked due to stress deviation is solved.
Description
Technical Field
The utility model relates to a stop valve, in particular to a stop valve for refrigeration.
Background
Shut-off valves are important components in the plumbing field that are often used to control the opening and closing of a flow passage. The existing large stop valve needs to bear larger pressure for a stop flow channel in a high-pressure pipeline environment, namely the stop pressure of the stop valve is as large as possible, the existing stop valve often has the problems of medium leakage, damage of sealing parts and the like in the high-pressure environment, and how to improve the use safety and the pressure resistance of the large stop valve is the object of research of technical personnel in the field.
The utility model discloses a high-pressure steel non return stop valve group that china utility model patent No. 201920411576.5 discloses, forged steel combination valve body's inner chamber left side is provided with the check valve seat, the top of check valve seat is provided with the check valve clack, the top left and right sides of check valve seat all is provided with the non return bush, the non return pressure cover is all installed to the left and right sides of check valve clack, the spring is installed to the inner chamber of check valve clack, the top joint of check valve clack has the check valve gap, the right side of forged steel combination valve body installs the stop valve clack, the outside of stop valve clack has cup jointed the stop valve bush, the top of stop valve clack is connected with the lower valve rod, the outer wall bottom spiro union of lower valve rod has the stop valve clack lid, this kind of high-pressure steel non return valve group does not have the relevant technical content of this invention.
SUMMERY OF THE UTILITY MODEL
The utility model provides the stop valve for refrigeration, which has the advantages of simple structure, long service life, large stop pressure and less technical faults.
A kind of stop valve for refrigeration, including the valve block, the underside of valve block has valve ports, the valve port cooperates and connects the valve clack, the valve clack connects with the valve stem, the valve stem is controlled by hand wheel, the valve stem periphery has valve caps of threaded connection, the said valve clack side has valve clack grooves to connect steel ball hole, the valve clack groove connects the steel ball groove located on valve stem, the steel ball partly laminates the binding surface on the valve clack groove and forms the first contact point, another part of steel ball laminates the binding surface on the steel ball groove and forms the second contact point; the axis between the first contact point and the second contact point is vertical to the binding surface on the valve clack groove and the binding surface on the steel ball groove; and the valve rod and valve clack binding surface on the upper side of the steel ball, the valve rod and first valve clack binding surface on the lower side of the steel ball and the axis between the first contact point and the second contact point are positioned on parallel surfaces at three different positions. The stop valve for refrigeration adopts the steel ball structure as the connecting structure between the valve rod and the valve clack, not only achieves the technical purpose that the valve rod controls the valve clack to move up and down, but also continues to apply pressure downwards after the valve clack seals the valve port, and prevents the valve clack and the valve port from being abraded and leaked because the steel ball structure does not transmit radial rotating force. As a further technical advantage, the joint surfaces of the valve rod and the valve clack on the upper side of the steel ball, the joint surfaces of the valve rod and the first valve clack on the lower side of the steel ball and the axis between the first contact point and the second contact point are positioned on parallel surfaces at three different positions to avoid the steel ball from being stuck in the rotating process of the valve rod, and the joint surfaces of the joint surfaces between the first contact point and the second contact point, the joint surfaces on the valve clack groove and the joint surfaces on the steel ball groove are mutually perpendicular to enable the steel ball to be in the same force application direction with the valve rod, so that the technical fault caused by the fact that the steel ball is subjected to oblique pressure is avoided.
And a sealing joint is arranged between the valve rod and the valve cover, the inner side of the sealing joint is hermetically connected with the valve rod through a first sealing ring, and the outer side of the sealing joint is hermetically connected with the valve cover through a second sealing ring. The sealing joint structure greatly increases the pressure resistance of the common sealing ring structure, and avoids leakage to form axial sealing.
The sealing joint bottom be equipped with V-arrangement drilled packing ring, V-arrangement drilled packing ring sealing connection valve gap stuffing box, V-arrangement drilled packing ring forms sealed effect under the sealing joint effect, has advantages such as simple structure, low in cost, installation are firm, convenient to use, sealed effectual.
The valve cover is divided into an upper part and a lower part along the cover body, the lower side part of the cover body is in threaded connection with the valve rod, and the cover body is in fastening connection with the valve body through screws. The cover body is fixedly connected with the valve body through screws to form downward pressing force, and the lower side part of the cover body is in threaded connection with the valve rod to enable the rotating process of the valve rod to be more stable.
The valve clack groove is arranged along the radial direction of the valve clack, a steel ball hole communicated with the valve clack groove is connected with a plug, and a steel ball is prevented from leaking after entering the steel ball groove along the steel ball hole.
A sealing gasket is arranged between the valve clack and the valve port, and the sealing gasket is in pressure connection with the valve clack through a flanging at the bottom of the valve clack, so that the deformation of the sealing gasket is avoided.
The utility model adopts the steel ball structure as the connecting structure between the valve rod and the valve clack, not only achieves the technical purpose that the valve rod controls the valve clack to move up and down, but also continues to press downwards after the valve clack seals the valve port, and prevents the valve clack and the valve port from being worn and leaked because the steel ball structure does not transmit radial rotating force, and the axial line between the first contact point and the second contact point is vertical to the binding surface on the valve clack groove and the binding surface on the steel ball groove, so that the steel ball force application direction is the same as the valve rod force application direction, and the technical fault caused by the inclined pressure applied to the steel ball is avoided.
Drawings
The utility model is further described below with reference to the accompanying drawings:
FIG. 1 is a schematic cross-sectional view of a stop valve for refrigeration according to the present invention;
FIG. 2 is a schematic structural diagram of a steel ball mounting position according to the present invention.
Detailed Description
The technical solution of the present patent will be described in further detail with reference to the following embodiments.
Please refer to fig. 1 and 2, a stop valve for refrigeration includes a valve body 5, a valve port 4 is disposed on a lower side surface of the valve body 5, the valve port 4 is connected with a valve flap 10 in a matching manner, the valve flap 10 is connected with a valve rod 12, the valve rod 12 is controlled by a hand wheel 1, and the valve flap 10 is moved up and down relative to the valve port 2 by rotating the hand wheel 1, so as to achieve the technical purpose of opening and closing the stop valve for refrigeration. A sealing gasket 7 is arranged between the valve clack 10 and the valve port 4, and the sealing gasket 7 is in pressure connection with the valve clack 10 through a flanging 8 at the bottom of the valve clack 10, so that the sealing opening and closing performance between the valve clack 10 and the valve port 4 is realized.
Preferably, a valve cap 13 is screwed to the outer periphery of the valve stem 12, a sealing joint 16 is provided between the valve stem 12 and the valve cap 13, the valve stem 12 is hermetically connected to the inner side of the sealing joint 16 by a first sealing ring 2, and the valve cap 13 is hermetically connected to the outer side of the sealing joint 16 by a second sealing ring 3. The bottom of the sealing joint 16 is provided with a V-shaped packing ring 15 which is hermetically connected with a valve cover packing box 24, and the V-shaped packing ring forms a sealing effect under the action of the sealing joint 16.
In order to further improve the working performance of the stop valve, a valve clack groove 19 communicated with a steel ball hole is formed in the side edge of the valve clack 10, the valve clack groove 19 is communicated with a steel ball groove 9 located on the valve rod, one part of the steel ball 11 is attached to an attachment surface 17 on the valve clack groove to form a first contact point, and the other part of the steel ball 11 is attached to an attachment surface 20 on the steel ball groove 9 to form a second contact point; the axis between the first contact point and the second contact point is vertical to the binding surface 17 on the valve clack groove and the binding surface 20 on the steel ball groove, so that the same performance of the steel ball stress and the valve rod force application direction is realized.
The valve rod and valve clack binding surface 23 on the upper side of the steel ball 11, the valve rod and first valve clack binding surface 22 on the lower side of the steel ball 11 and the axis between the first contact point and the second contact point are preferably located on three parallel surfaces at different positions to form three different parallel surfaces, so that the steel ball is ensured to rotate between the valve clack groove and the steel ball groove, and the technical problems of steel ball blocking and the like are solved.
In order to further improve the structural stability of the stop valve, the bonnet 13 is divided into an upper part and a lower part along a cover body, the lower part of the cover body is in threaded connection with the valve rod 12, and the cover body is in fastening connection with the valve body 5 through a screw 14. The valve clack groove 19 is arranged along the radial direction of the valve clack, a steel ball hole communicated with the valve clack groove 19 is connected with a plug 6, and a steel ball 11 is prevented from leaking after entering the steel ball groove along the steel ball hole.
Although the preferred embodiments of the present patent have been described in detail, the present patent is not limited to the above embodiments, and various changes can be made without departing from the spirit of the present patent within the knowledge of those skilled in the art.
Claims (6)
1. A stop valve for refrigeration, includes valve body (5), its characterized in that: the valve is characterized in that a valve port (4) is arranged on the lower side surface of the valve body (5), a valve clack (10) is connected with the valve clack (10) in a matched mode, the valve clack (10) is connected with a valve rod (12), the valve rod (12) is controlled by a hand wheel (1), a valve cover (13) in threaded connection is arranged on the periphery of the valve rod (12), a valve clack groove (19) communicated with a steel ball hole is formed in the side edge of the valve clack (10), the valve clack groove (19) is communicated with a steel ball groove (9) located on the valve rod, one part of steel balls (11) is attached to an attaching surface (17) on the valve clack groove to form a first contact point, and the other part of the steel balls (11) is attached to an attaching surface (20) on the steel ball groove (9) to form a second contact point; the axis between the first contact point and the second contact point is vertical to an attaching surface (17) on the valve clack groove and an attaching surface (20) on the steel ball groove; and the valve rod and valve clack binding surface (23) on the upper side of the steel ball (11), the valve rod and first valve clack binding surface (22) on the lower side of the steel ball and the axis between the first contact point and the second contact point are positioned on parallel surfaces at three different positions.
2. A stop valve for refrigeration as set forth in claim 1, wherein: and a sealing joint (16) is arranged between the valve rod (12) and the valve cover (13), the inner side of the sealing joint (16) is hermetically connected with the valve rod (12) through a first sealing ring (2), and the outer side of the sealing joint (16) is hermetically connected with the valve cover (13) through a second sealing ring (3).
3. A stop valve for refrigeration as set forth in claim 2, wherein: the bottom of the sealing joint (16) is provided with a V-shaped packing ring (15).
4. A stop valve for refrigeration as set forth in claim 1, wherein: the valve cover (13) is divided into an upper part and a lower part along the cover body, the lower side part of the cover body is in threaded connection with the valve rod (12), and the cover body is fastened and connected with the valve body (5) through a screw (14).
5. A stop valve for refrigeration as set forth in claim 1, wherein: the valve clack groove is radially arranged along the valve clack (10), and a plug (6) is connected with a steel ball hole communicated with the valve clack groove (19).
6. A stop valve for refrigeration as set forth in claim 1, wherein: a sealing gasket (7) is arranged between the valve clack (10) and the valve port (4), and the sealing gasket (7) is in pressure joint with the valve clack (10) through a flanging (8) at the bottom of the valve clack (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122340924.4U CN216867511U (en) | 2021-09-27 | 2021-09-27 | Stop valve for refrigeration |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122340924.4U CN216867511U (en) | 2021-09-27 | 2021-09-27 | Stop valve for refrigeration |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216867511U true CN216867511U (en) | 2022-07-01 |
Family
ID=82121037
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122340924.4U Active CN216867511U (en) | 2021-09-27 | 2021-09-27 | Stop valve for refrigeration |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216867511U (en) |
-
2021
- 2021-09-27 CN CN202122340924.4U patent/CN216867511U/en active Active
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