CN218718841U - Cam type rotary regulating valve - Google Patents
Cam type rotary regulating valve Download PDFInfo
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- CN218718841U CN218718841U CN202222650375.5U CN202222650375U CN218718841U CN 218718841 U CN218718841 U CN 218718841U CN 202222650375 U CN202222650375 U CN 202222650375U CN 218718841 U CN218718841 U CN 218718841U
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Abstract
The utility model discloses a cam-type rotary regulating valve, which belongs to the technical field of valve production and comprises a valve body, a valve core, a valve rod and a valve cover, wherein the valve core is fixed on the valve rod and is arranged in the valve body through the valve rod, and the valve rod is fixed with the valve body through an upper shaft sleeve and a lower shaft sleeve; the valve cover is sleeved on the valve rod and is fixedly connected with the valve body through a bolt; a liquid inlet channel and a liquid outlet channel are respectively arranged on two sides of the valve body and are coaxially arranged in a straight line; the valve core is a cam type valve core with an eccentric structure, the valve core is a truncated cylinder, the section surface of the truncated cylinder is an arc surface, and the arc surface is a plugging surface of the liquid inlet channel; the liquid inlet channel is provided with a detachable valve seat, the detachable valve seat is provided with an arc inner tangent plane matched with the arc surface, and the detachable valve seat is matched with the valve core to realize sealing and plugging. The utility model discloses flow coefficient is high, and the velocity of flow is stable, and sealing performance is good, and the moment of torsion is low when the valve is closed, effectively reduce cost.
Description
Technical Field
The utility model belongs to the technical field of the valve production technique and specifically relates to a cam-type rotary regulating valve.
Background
The existing single-seat regulating valve adopts a Z-shaped valve body structure with low inlet and high outlet, and the structure has the defects that firstly, the valve of the Z-shaped valve body structure has large flow resistance coefficient, low flow coefficient and poor flow capacity, and generally adopts a valve with larger caliber for increasing flow, so that the use cost of the valve is often overhigh; secondly, the medium acts on the valve core as an axial acting force, the valve closing force is correspondingly increased, in order to achieve the purpose of sealing the valve, an actuating mechanism with a large model must be selected for driving, and the cost of the valve is also increased; thirdly, the medium can produce the vortex phenomenon around the case when flowing through the disk seat, leads to the radial vibrations of case to produce the cavitation and cause the erode to the case.
Disclosure of Invention
The technical task of the utility model is to above weak point, provide a rotatory governing valve of cam-type, flow coefficient is high, and the velocity of flow is stable, and sealing performance is good, and the moment of torsion is low when the valve is closed, can effectively reduction in production cost and use cost.
The utility model provides a technical scheme that its technical problem adopted is:
a cam-type rotary regulating valve comprises a valve body, a valve core, a valve rod and a valve cover, wherein the valve core is fixed on the valve rod and is arranged in the valve body through the valve rod; the valve cover is sleeved on the valve rod and is fixedly connected with the valve body through a bolt;
a liquid inlet channel and a liquid outlet channel are respectively arranged on two sides of the valve body and are coaxially arranged in a straight line; the valve core is a cam type valve core with an eccentric structure, the valve core is a truncated cylinder, the section surface of the truncated cylinder is an arc surface, and the arc surface is a plugging surface of the liquid inlet channel;
the liquid inlet channel is provided with a detachable valve seat, the detachable valve seat is provided with an arc inner tangent plane matched with the arc surface, and the detachable valve seat is matched with the valve core to realize sealing and plugging.
The valve core is designed by adopting a cam reducing structure and a truncated cylinder structure, the central line of a shaft hole of the valve core and the central line of a flow passage form an eccentric reducing structure, and the sealing specific pressure is continuously increased when the valve core is closed due to the cam transmission principle, so that the valve sealing is realized; when the valve core is opened, the valve core is separated from the valve seat, the sealing specific pressure is continuously reduced, and the valve core is smoothly opened.
The liquid inlet channel and the liquid outlet channel of the regulating valve are coaxially arranged in a straight line, and the regulating valve has small flow resistance coefficient, high flow coefficient and strong flow capacity, so that the selective aperture of the valve is reduced, and the use cost is reduced; meanwhile, the cam type valve core with an eccentric structure is adopted, and the valve core is a truncated cylinder with an arc surface, so that the sealing specific pressure of the valve is greatly improved, the flow cross section area of the valve is increased compared with that of a ball body by the truncated cylinder with the arc surface, and the processing difficulty is reduced; compared with a cylinder valve core, the sealing performance is better; the cam type cut-off cylinder valve core with the eccentric structure reduces the valve switching torque, further reduces the driving force requirement on the actuating driving mechanism, and therefore cost is saved. The inner cavity of the valve body adopts a straight-line coaxial streamline design, so that the scouring of the medium to the valve body is reduced.
This governing valve gap is detachable connection structure with the valve body, can take out the change through this structural design case, compares in the case structure of present integral type, and the case is unable the maintenance when old damage, and this structure can take out the case, only change the case can, reduced the assembly and the maintenance degree of difficulty, make the valve change in installation and dismantlement, use cost is low. The detachable valve seat is matched with the valve core for use, and when the valve seat needs to be replaced, the valve seat can be detached and taken out for maintenance and replacement, so that the use cost is reduced.
Preferably, a packing is arranged between the valve rod and the valve cover.
Furthermore, the valve cover is provided with a stuffing box, the valve rod is installed in the valve cover, a stuffing pressing sleeve and stuffing are installed in the stuffing box from bottom to top and are fixed through a stuffing pressing cover, and the stuffing pressing cover is fixedly connected with the valve cover through a stuffing bolt. The packing and the packing gland are sleeved and penetrate through the valve rod to be arranged in the packing box, and the packing gland is fastened by using a bolt, so that the packing generates a sealing force.
Preferably, the valve core and the valve rod are connected and fixed through an involute spline.
Further, the valve core is connected with the valve rod through a connecting seat, the connecting seat comprises a connecting sleeve and a connecting plate, the connecting sleeve is connected with the valve rod through spline matching, the connecting plate is fixed on the connecting sleeve, and the connecting plate is fixed with the valve core.
Preferably, the detachable valve seat is fixed through a valve seat gland, and the valve seat gland is fixed on the valve body through a bolt.
Preferably, a sealing gasket is arranged between the detachable valve seat and the valve body.
Preferably, a tooth-shaped sealing gasket is arranged between the valve cover and the valve body.
Preferably, the valve cover is matched with the valve body spigot in a positioning mode.
Preferably, the upper part and the lower part of the valve body are respectively provided with an upper shaft hole and a lower shaft hole which are communicated with the inner cavity, and the valve rod is arranged on the valve body through the matching of the upper shaft sleeve and the lower shaft sleeve with the upper shaft hole and the lower shaft hole; the valve cover is installed above the upper shaft hole, the lower shaft hole cover is installed at the bottom of the lower shaft hole, the lower shaft hole cover is fixedly connected with the valve body through a bolt, and a sealing gasket is arranged between the lower shaft hole cover and the valve body.
The utility model discloses a cam-type rotary regulating valve compares with prior art, has following beneficial effect:
the regulating valve adopts the split design of the valve body and the valve cover, reduces the assembling and maintaining difficulty, and makes the valve easier to install and disassemble.
The valve liquid inlet and outlet flow passage is of a straight-line structure, and has small flow resistance coefficient, high flow coefficient and strong flow capacity, so that the selective aperture of the valve is reduced, and the use cost is reduced.
The inner cavity of the valve body adopts a streamline design, so that the scouring of the medium to the valve body is reduced.
The valve core adopts the cam reducing structure and the truncated cylinder structure design, thereby greatly improving the sealing specific pressure of the valve, increasing the flow cross section area of the valve, reducing the torque of the valve to be opened and closed and saving energy.
Adopt detachable disk seat, can dismantle the change, reduced use cost.
Drawings
Fig. 1 is a sectional view of a front view of a cam-type rotary regulating valve provided in an embodiment of the present invention;
fig. 2 is a sectional view of a top view of the cam-type rotary regulating valve according to an embodiment of the present invention.
In the figure, 1, a valve body, 2, a valve cover, 3, a valve rod, 4, a valve core, 5, a valve cover bolt, 6, a packing gland, 7, a packing gland bolt, 8, packing, 9, a packing gland, 10, an upper shaft sleeve, 11, a lower shaft sleeve, 12, a lower shaft hole cover, 13, a lower shaft hole cover sealing gasket, 14, a lower shaft hole cover bolt, 15, a valve seat, 16, a valve seat gland, 17, a valve cover bolt, 18, a valve seat sealing gasket, 19, a valve cover sealing gasket, 20 and a mounting bolt.
Detailed Description
The invention will be further explained with reference to the drawings and the specific embodiments.
The embodiment of the utility model provides a cam-type rotary regulating valve, including valve body 1, valve gap 2, valve rod 3 and case 4.
The valve core 4 is fixed on the valve rod 3 and is arranged in the valve body 1 through the valve rod 3, and the valve rod 3 is fixed with the valve body 1 through an upper shaft sleeve and a lower shaft sleeve; the valve cover 2 is sleeved on the valve rod 3 and is fixedly connected with the valve body 1 through a bolt. As shown in fig. 1, the upper part and the lower part of the valve body 1 are respectively provided with an upper shaft hole and a lower shaft hole which are communicated with the inner cavity of the valve body, and the valve rod 3 is arranged on the valve body 1 through the matching of the upper shaft hole and the lower shaft hole by the upper shaft sleeve 10 and the lower shaft sleeve 11. The valve cover 2 is arranged above the upper shaft hole, the valve cover 2 is in positioning fit with the spigot of the valve body 1, a valve cover sealing gasket 19 is arranged between the valve cover 2 and the valve body 1, and the valve cover sealing gasket 19 is a tooth-shaped sealing gasket; the bottom of the lower shaft hole is provided with a lower shaft hole cover 12, the lower shaft hole cover 12 is fixedly connected with the valve body 1 through a lower shaft hole cover bolt 14, and a lower shaft hole cover sealing gasket 13 is arranged between the lower shaft hole cover 12 and the valve body 1.
The valve cover 2 is provided with a stuffing box, and stuffing is arranged between the valve rod 3 and the valve cover 2. The valve rod 3 is installed in the valve cover 2, a packing pressing sleeve 9 and packing 8 are installed in the packing box from bottom to top and are fixed through a packing pressing cover 6, and the packing pressing cover 6 is fixedly connected with the valve cover 2 through a packing pressing cover bolt 7. The packing 8 and the packing gland 9 are sleeved and penetrate through the valve rod 3 to be arranged in the packing box, and the packing gland 6 is fastened by using a packing gland bolt 7, so that the packing generates sealing force.
As shown in fig. 1 and 2, a liquid inlet channel and a liquid outlet channel are respectively formed on two sides of the valve body 1, and the liquid inlet channel and the liquid outlet channel are coaxially formed in a straight line shape and are in a streamline design. The valve core 4 is a cam type valve core with an eccentric structure, the valve core is a truncated cylinder, the section surface of the truncated cylinder is an arc surface, and the arc surface is a plugging surface of the liquid inlet channel; the liquid inlet channel is provided with a detachable valve seat 15, the valve seat 15 and the valve core 4 form a sealing pair, as shown in fig. 2, the valve seat 15 is provided with an arc inner tangent plane matched with the arc surface, and the valve seat 15 is matched with the valve core 4 to realize sealing plugging. The valve seat 15 is fixed by a valve seat gland 16, and the valve seat gland 16 is fixed on the valve body 1 by a valve cover bolt 17. A valve seat gasket 18 is arranged between the valve seat 15 and the valve body 1.
And the valve core 4 and the valve rod 3 are connected and fixed through an involute spline. The valve core 4 is connected with the valve rod 3 through a connecting seat, the connecting seat comprises a connecting sleeve and a connecting plate, the connecting sleeve is connected with the valve rod 3 through spline matching, the connecting plate is fixed on the connecting sleeve, and the connecting plate is fixed with the valve core. The valve rod 3 is connected with an actuating mechanism, the actuating mechanism drives the valve rod 3 to further drive the valve core 4 of the truncated cylinder cam structure to rotate in the valve body 1, and the medium flow is adjusted through the matching of the valve core 4 and the valve seat 15.
The valve core 4 is designed by adopting a cam reducing structure and a truncated cylinder structure, the central line of a shaft hole of the valve core 4 and the central line of a flow passage form an eccentric reducing structure, and the sealing specific pressure is continuously increased when the valve core 4 is closed due to the cam transmission principle, so that the valve sealing is realized; when the valve core 4 is opened, the valve core 4 is separated from the valve seat 15, the sealing specific pressure is continuously reduced, and the valve core 4 is smoothly opened.
The cam type rotary regulating valve is fixedly connected with a pipe fitting through a mounting bolt 20.
The liquid inlet channel and the liquid outlet channel of the regulating valve are coaxially arranged in a straight line, and the regulating valve has small flow resistance coefficient, high flow coefficient and strong flow capacity, so that the selective aperture of the valve is reduced, and the use cost is reduced; meanwhile, the cam type valve core with an eccentric structure is adopted, and the valve core is a truncated cylinder with an arc surface, so that the sealing specific pressure of the valve is greatly improved, the flow cross section area of the valve is increased compared with that of a ball body by the truncated cylinder with the arc surface, and the processing difficulty is reduced; compared with a cylinder valve core, the sealing performance is better; the cam type truncated cylinder valve core with the eccentric structure reduces the torque of the valve switch, further reduces the requirement on the driving force of the actuating driving mechanism, and therefore the cost is saved. The inner cavity of the valve body adopts a straight-line coaxial streamline design, so that the scouring of the medium to the valve body is reduced.
This governing valve gap is detachable connection structure with the valve body, can take out the change through this structural design case, compares in the case structure of present integral type, and the case is unable the maintenance when old damage, and this structure can take out the case, only change the case can, reduced the assembly and the maintenance degree of difficulty, make the valve change in installation and dismantlement, use cost is low. The detachable valve seat is matched with the valve core for use, and when the valve seat needs to be replaced, the valve seat can be detached and taken out for maintenance and replacement, so that the use cost is reduced.
The cam type rotary regulating valve with the truncated ball body has the advantages of being good in sealing performance, strong in circulation capacity, stable in flow rate and the like, is suitable for medium working conditions of viscosity, poor in flow and fiber, and has excellent popularization value and application prospect.
Through the above detailed description, the person skilled in the art can easily realize the present invention. It should be understood, however, that the intention is not to limit the invention to the particular embodiments described. On the basis of the disclosed embodiments, a person skilled in the art can combine different technical features at will, thereby implementing different technical solutions.
In addition to the technical features described in the specification, the technology is known to those skilled in the art.
Claims (10)
1. A cam type rotary regulating valve is characterized by comprising a valve body, a valve core, a valve rod and a valve cover, wherein the valve core is fixed on the valve rod and is arranged in the valve body through the valve rod; the valve cover is sleeved on the valve rod and is fixedly connected with the valve body through a bolt;
a liquid inlet channel and a liquid outlet channel are respectively arranged on two sides of the valve body and are coaxially arranged in a straight line; the valve core is a cam type valve core with an eccentric structure, the valve core is a truncated cylinder, the section surface of the truncated cylinder is an arc surface, and the arc surface is a plugging surface of the liquid inlet channel;
the liquid inlet channel is provided with a detachable valve seat, the detachable valve seat is provided with an arc inner tangent plane matched with the arc surface, and the detachable valve seat is matched with the valve core to realize sealing and plugging.
2. The cam-type rotary regulating valve according to claim 1, wherein a packing is provided between the valve stem and the valve cover.
3. The cam-type rotary regulating valve according to claim 2, wherein the valve cover is provided with a stuffing box, the valve rod is installed in the valve cover, a stuffing pressing sleeve and stuffing are installed in the stuffing box from bottom to top and are fixed through a stuffing pressing cover, and the stuffing pressing cover is fixedly connected with the valve cover through a stuffing bolt.
4. The cam-type rotary regulating valve according to claim 1, wherein the valve core and the valve stem are fixedly connected by involute splines.
5. The cam-type rotary regulating valve according to claim 4, wherein the valve core is connected with the valve rod through a connecting seat, the connecting seat comprises a connecting sleeve in spline fit connection with the valve rod and a connecting plate fixed on the connecting sleeve, and the connecting plate is fixed with the valve core.
6. The cam-type rotary regulating valve according to claim 1, wherein the detachable valve seat is fixed by a valve seat cover, and the valve seat cover is fixed to the valve body by bolts.
7. The cam-type rotary regulating valve according to claim 6, wherein a seal is provided between the detachable valve seat and the valve body.
8. The cam-type rotary regulating valve according to claim 1 or 7, wherein a toothed sealing gasket is arranged between the valve cover and the valve body.
9. The cam-type rotary regulating valve of claim 1, wherein the valve cover is in locating engagement with the valve body spigot.
10. The cam-type rotary regulating valve according to claim 1, wherein the upper part and the lower part of the valve body are respectively provided with an upper shaft hole and a lower shaft hole which are communicated with the inner cavity, and the valve rod is arranged on the valve body through the matching of the upper shaft sleeve and the lower shaft sleeve with the upper shaft hole and the lower shaft hole; the valve cover is arranged above the upper shaft hole, the lower shaft hole cover is arranged at the bottom of the lower shaft hole, and the lower shaft hole cover is fixedly connected with the valve body through a bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222650375.5U CN218718841U (en) | 2022-10-09 | 2022-10-09 | Cam type rotary regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222650375.5U CN218718841U (en) | 2022-10-09 | 2022-10-09 | Cam type rotary regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN218718841U true CN218718841U (en) | 2023-03-24 |
Family
ID=85640544
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202222650375.5U Active CN218718841U (en) | 2022-10-09 | 2022-10-09 | Cam type rotary regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN218718841U (en) |
-
2022
- 2022-10-09 CN CN202222650375.5U patent/CN218718841U/en active Active
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