CN210531615U - High stability stop valve - Google Patents
High stability stop valve Download PDFInfo
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- CN210531615U CN210531615U CN201921163768.5U CN201921163768U CN210531615U CN 210531615 U CN210531615 U CN 210531615U CN 201921163768 U CN201921163768 U CN 201921163768U CN 210531615 U CN210531615 U CN 210531615U
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- cover
- high stability
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Abstract
The application provides a high stability stop valve, wherein, include: the valve comprises a valve body, a valve cover, a valve rod and a valve clack, wherein the valve cover is sleeved on the valve rod and connected to the valve body, the upper part of the valve rod is spirally screwed with the valve cover through a valve rod nut, the valve clack which is abutted against a valve port in the valve body is arranged at the lower end of the valve rod, and the upper end of the valve rod extends to the upper side of the valve cover and is connected with the hand wheel. The application provides a high stability stop valve, durable, after the repetitious usage, still can keep sealing performance good.
Description
Technical Field
The utility model relates to the technical field of valves, especially, relate to a high stability stop valve.
Background
The valve is widely used in daily life and in work of people, the stop valve plays an important role in cutting off and throttling media in a pipeline where the stop valve is located, and the closing principle of the stop valve is that the sealing surface of the valve clack is tightly attached to the sealing surface of a valve port in the valve body by means of the pressure of the valve rod to prevent the media from flowing. After the traditional stop valve is used for many times, because frequent collision and friction between the valve clack and the valve seat easily cause abrasion and scratch, the sealing performance between the valve clack and the valve seat is difficult to maintain, and the service life of the stop valve is short.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a durable, high stability stop valve that sealing performance is good.
In order to solve the technical problem, the utility model provides a following technical scheme:
a high stability shut off valve, comprising: the valve comprises a valve body, a valve cover, a valve rod and a valve clack, wherein the valve cover is sleeved on the valve rod and connected to the valve body, the upper part of the valve rod is spirally screwed with the valve cover through a valve rod nut, the valve clack which is abutted against a valve port in the valve body is arranged at the lower end of the valve rod, and the upper end of the valve rod extends to the upper side of the valve cover and is connected with a hand wheel.
Further, a valve rod packing is arranged between the middle part of the valve rod and the valve cover, and a packing gland which is pressed above the valve rod packing is sleeved at the middle part of the valve rod.
Furthermore, the lower end of the valve rod is further sleeved with a split ring and a valve clack cover, the split ring is located in the valve clack, and the valve clack cover is abutted against the upper end of the valve clack.
Further, the periphery of the valve clack is provided with a flange, and the lower side of the flange is a sealing surface.
Further, a flange on the outer periphery of the valve flap abuts against the upper end of the valve port.
Furthermore, the valve seat is sleeved in the valve port, the valve seat comprises an upper ring body, a lower ring body and a plurality of inclined struts connected between the upper ring body and the lower ring body, and through holes are formed between every two adjacent inclined struts.
Further, a flange on the periphery of the valve flap abuts against the upper end of the upper ring body, and the lower end of the valve flap is provided with a guide rod extending into the lower ring body.
Further, the upper portion of the valve rod is in threaded connection with a valve rod nut sleeved on the upper portion of the valve rod, and the valve rod nut is fixedly connected with the valve cover through a screw.
Further, the valve rod nut is in threaded connection with the upper portion of the valve rod, a bearing and a bearing gland are arranged between the valve rod nut and the valve cover, and the bearing gland abuts against the upper side of the bearing.
Furthermore, the hand wheel is sleeved on the outer side of the valve rod nut.
According to the above technical scheme, the utility model discloses following beneficial effect has:
1. the lower end of the valve clack is provided with the guide rod extending into the lower ring body, so that the valve clack can stably support the upper end of the valve seat all the time after the stop valve is opened and closed for many times, the sealing performance of the stop valve is improved, and the stop valve is durable;
2. because the valve clack cover and the split ring have a fixing effect on the valve clack, the stop valve can still keep good sealing performance after being used for a long time.
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic view of a half-section structure of a first embodiment of the present invention.
Fig. 2 is another schematic structural diagram according to a first embodiment of the present invention.
Fig. 3 is a schematic view of a half-section structure of a second embodiment of the present invention.
Fig. 4 is a cross-sectional view of the valve flap of the present invention.
Fig. 5 is a cross-sectional view of the valve seat of the present invention.
Fig. 6 is a top view of the valve seat of the present invention.
Description of reference numerals: the valve comprises a valve body-1, a valve clack-2, a split ring-3, a valve clack cover-4, a valve rod-5, a flange gasket-6, a valve cover-7, a nut-8, a stud-9, valve rod packing-10, a cylindrical pin-11, a packing gland-12, a bolt-13, a valve port-14, a valve rod nut-16, a hand wheel-17, a screw-18, a retaining washer-19, a bearing-20, a bearing gland-21, an oil nozzle-22, a positioning block-23, a valve seat-24, an upper ring body-241, a lower ring body-242, an inclined support-243, a through hole-244, a guide rod-25, a flange-26 and a sealing surface-261.
Detailed Description
The embodiments of the invention will be described in detail below with reference to the drawings, but the invention can be implemented in many different ways as defined and covered by the claims.
The present application is further described with reference to fig. 1-2, and a high stability shut-off valve as shown in fig. 1 and 2 includes: the valve comprises a valve body 1, a valve cover 7, a valve rod 5 and a valve clack 2, wherein the valve cover 7 is sleeved on the valve rod 5 and is connected to the valve body 1, the upper part of the valve rod 5 is spirally connected with the valve cover 7 through a valve rod nut 16, the valve clack 2 which is abutted against a valve port 14 in the valve body 1 is arranged at the lower end of the valve rod 5, and the upper end of the valve rod 5 extends to the upper side of the valve cover 7 and is connected with a hand wheel 17.
A valve rod packing 10 is arranged between the middle of the valve rod 5 and the valve cover 7, a packing gland 12 which is pressed above the valve rod packing 10 is further sleeved at the middle of the valve rod 5, the packing gland 12 is connected with the valve cover 7 through a bolt 13, specifically, a pair of lugs are arranged on the left side and the right side of the valve cover 7, a cylindrical pin 11 is arranged between the lugs, the lower end of the bolt 13 is sleeved on the cylindrical pin 11, and the upper end of the bolt 13 penetrates through the packing gland 12 and is connected with a nut 8.
The packing gland 12 prevents the valve rod packing 10 from loosening, and improves the overall sealing performance and the service life of the stop valve.
The lower extreme of valve rod 5 still overlaps and is equipped with run-to-run ring 3 and valve clack lid 4, run-to-run ring 3 is located in the valve clack 2, valve clack lid 4 keeps off the upper end of valve clack 2, valve clack lid 4 with be provided with between the valve clack 2 and prevent moving back packing ring 19, valve clack lid 4 with run-to-run ring 3 is right valve clack 2 plays the fixed action.
The valve flap 2 has a flange 26 on its outer circumference, and the underside of the flange 26 is a sealing surface 261.
A flange 26 on the periphery of the flap 2 abuts against the upper end of the valve port 14.
The upper part of the valve rod 5 is in threaded connection with a valve rod nut 16 sleeved on the upper part of the valve rod 5, the upper part of the valve rod 5 is provided with threads matched with the valve rod nut 16, and the valve rod nut 16 is fixedly connected with the valve cover 7 through a screw 18.
The connecting part of the valve cover 7 and the valve body 1 is provided with a flange gasket 6, and the valve cover 7 is connected with the valve body 1 through a plurality of studs 9.
The hand wheel 17 is connected with the upper end of the valve rod 5 through a stud 9, and a nut 8 is sleeved on the stud 9.
A water inlet and a water outlet are respectively arranged on two sides of the valve body 1, the water inlet and the water outlet are both connected with flanges, and a medium entering the valve body 1 from the water inlet can only flow out from the water outlet through the valve port 14.
The utility model discloses a theory of operation of embodiment one is: the hand wheel 17 drives the valve rod 5 to rotate in the stop valve by rotating the hand wheel 17, the upper part of the valve rod 5 is screwed with the valve rod nut 16, so that the lower part of the valve rod 5 moves up and down in the valve body 1, when the valve rod 5 moves up and drives the valve clack 2 to separate from the valve port 14, the valve port 14 is opened, and a medium can pass through the valve body 1; when the valve rod 5 moves downwards and drives the valve clack 2 to abut against the valve port 14, the valve port 14 is closed, a medium cannot pass through the valve body 1, and the sealing surface 261 ensures that the valve body 1 has good sealing performance, so that after long-time use, the valve body 1 has stable sealing performance and is durable.
Example two:
the present application is further described with reference to fig. 3-6, which illustrate a high stability shut off valve as shown in fig. 3, comprising: the valve comprises a valve body 1, a valve cover 7, a valve rod 5 and a valve clack 2, wherein the valve cover 7 is sleeved on the valve rod 5 and is connected to the valve body 1, the upper part of the valve rod 5 is spirally connected with the valve cover 7 through a valve rod nut 16, the valve clack 2 which is abutted against a valve port 14 in the valve body 1 is arranged at the lower end of the valve rod 5, and the upper end of the valve rod 5 extends to the upper side of the valve cover 7 and is connected with a hand wheel 17.
A valve rod packing 10 is arranged between the middle of the valve rod 5 and the valve cover 7, a packing gland 12 which is pressed above the valve rod packing 10 is further sleeved at the middle of the valve rod 5, the packing gland 12 is connected with the valve cover 7 through a bolt 13, specifically, a pair of lugs are arranged on the left side and the right side of the valve cover 7, a cylindrical pin 11 is arranged between the lugs, the lower end of the bolt 13 is sleeved on the cylindrical pin 11, and the upper end of the bolt 13 penetrates through the packing gland 12 and is connected with a nut 8.
The packing gland 12 prevents the valve rod packing 10 from loosening, and improves the overall sealing performance and the service life of the stop valve.
The lower extreme of valve rod 5 still overlaps and is equipped with run-to-run ring 3 and valve clack lid 4, run-to-run ring 3 is located in the valve clack 2, valve clack lid 4 keeps off the upper end of valve clack 2, valve clack lid 4 with be provided with between the valve clack 2 and prevent moving back packing ring 19, valve clack lid 4 with run-to-run ring 3 is right valve clack 2 plays the fixed action.
The valve flap 2 has a flange 26 on its outer circumference, and the underside of the flange 26 is a sealing surface 261.
The connecting part of the valve cover 7 and the valve body 1 is provided with a flange gasket 6, and the valve cover 7 is connected with the valve body 1 through a plurality of studs 9.
As shown in fig. 3, 5 and 6, a valve seat 24 is sleeved in the valve port 14, the valve seat 24 includes an upper ring body 241, a lower ring body 242 and a plurality of inclined struts 243 connected between the upper ring body 241 and the lower ring body 242, a through hole 244 is formed between two adjacent inclined struts 243, and specifically, the inner diameter of the upper ring body 241 is larger than the inner diameter of the lower ring body 242.
Preferably, the number of the inclined struts 243 is 3, and the 3 inclined struts 243 are uniformly distributed.
As shown in fig. 3, 4 and 5, the flange 26 on the periphery of the valve flap 2 abuts against the upper end of the upper ring body 241, and the lower end of the valve flap 2 is provided with the guide rod 25 extending into the lower ring body 242, so that when the valve rod 5 drives the valve flap 2 to move up and down, the valve flap 2 is always in a non-deflected state, and after long-term use, the valve flap can still be stably abutted against the upper end of the valve seat 24, which is beneficial to improving the sealing performance of the stop valve.
The valve rod nut 16 is in threaded connection with the upper portion of the valve rod 5, a bearing 20 and a bearing gland 21 are arranged between the valve rod nut 16 and the valve cover 7, and the bearing gland 21 abuts against the upper side of the bearing 20.
The valve cover 7 is provided with an oil nozzle 22 for providing lubricating oil for the bearing 20, and the valve cover 7 is further provided with a positioning block 23 which is abutted against the valve rod 5.
The hand wheel 17 is sleeved on the outer side of the valve rod nut 16, a nut 8 which is abutted against the hand wheel 17 is sleeved on the outer side of the valve rod nut 16, and the upper end of the valve rod 5 extends upwards from the center of the hand wheel 17.
A water inlet and a water outlet are respectively arranged on two sides of the valve body 1, the water inlet and the water outlet are both connected with flanges, and a medium entering the valve body 1 from the water inlet can only flow out from the water outlet through the valve port 14.
The second embodiment of the present invention has the following working principle: by rotating the hand wheel 17, the upper part of the valve rod 5 is screwed with the valve rod nut 16, so that the valve rod 5 rotates in the stop valve, the lower part of the valve rod 5 moves up and down in the valve body 1, when the valve rod 5 moves up and drives the valve clack 2 to separate from the upper ring body 241 in the valve port 14, the valve port 14 is opened, and a medium can pass through the valve body 1; when the valve rod 5 moves downwards and drives the valve clack 2 to abut against the upper ring body 241 of the valve port 14, the valve port 14 is closed, and the sealing surface 261 ensures that the valve body 1 has good sealing performance, so that the valve body is stable in sealing performance and durable after being used for a long time.
The above is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes will occur to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A high stability shut-off valve, comprising: the valve comprises a valve body (1), a valve cover (7), a valve rod (5) and a valve clack (2), wherein the valve cover (7) is sleeved on the valve rod (5) and connected to the valve body (1), the upper part of the valve rod (5) is spirally screwed with the valve cover (7) through a valve rod nut (16), the lower end of the valve rod (5) is provided with the valve clack (2) which is abutted against a valve port (14) in the valve body (1), and the upper end of the valve rod (5) extends to the upper side of the valve cover (7) and is connected with a hand wheel (17).
2. The high-stability stop valve according to claim 1, characterized in that a valve rod packing (10) is arranged between the middle part of the valve rod (5) and the valve cover (7), and a packing gland (12) which is pressed above the valve rod packing (10) is sleeved on the middle part of the valve rod (5).
3. The high-stability stop valve according to claim 1, characterized in that the lower end of the valve rod (5) is further sleeved with a split ring (3) and a valve flap cover (4), the split ring (3) is located in the valve flap (2), and the valve flap cover (4) abuts against the upper end of the valve flap (2).
4. High stability stop valve according to claim 1, characterized in that the valve flap (2) has a flange (26) on its periphery, the underside of the flange (26) being a sealing surface (261).
5. A high stability stop valve according to claim 4, characterized in that a flange (26) on the periphery of the valve flap (2) abuts against the upper end of the valve port (14).
6. The high stability stop valve of claim 4, characterized in that the valve port (14) is internally sleeved with a valve seat (24), the valve seat (24) comprises an upper ring body (241), a lower ring body (242) and a plurality of inclined struts (243) connected between the upper ring body (241) and the lower ring body (242), and a through hole (244) is formed between two adjacent inclined struts (243).
7. A high stability shut-off valve according to claim 6, characterized in that a flange (26) on the periphery of the valve flap (2) abuts the upper end of the upper ring (241), the lower end of the valve flap (2) having a guide rod (25) extending into the lower ring (242).
8. The high-stability stop valve according to claim 1, characterized in that the upper part of the valve rod (5) is in threaded connection with a valve rod nut (16) sleeved on the upper part of the valve rod (5), and the valve rod nut (16) is fixedly connected with the valve cover (7) through a screw (18).
9. High stability stop valve according to claim 1, characterized in that the stem nut (16) is threaded on the upper part of the valve stem (5), a bearing (20) and a bearing gland (21) are arranged between the stem nut (16) and the bonnet (7), the bearing gland (21) abuts against the upper side of the bearing (20).
10. The high stability stop valve of claim 9, characterized in that the hand wheel (17) is sleeved outside the stem nut (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921163768.5U CN210531615U (en) | 2019-07-23 | 2019-07-23 | High stability stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921163768.5U CN210531615U (en) | 2019-07-23 | 2019-07-23 | High stability stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210531615U true CN210531615U (en) | 2020-05-15 |
Family
ID=70598904
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921163768.5U Active CN210531615U (en) | 2019-07-23 | 2019-07-23 | High stability stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210531615U (en) |
-
2019
- 2019-07-23 CN CN201921163768.5U patent/CN210531615U/en active Active
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