CN209925632U - Stop valve for flow regulation - Google Patents
Stop valve for flow regulation Download PDFInfo
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- CN209925632U CN209925632U CN201920575115.1U CN201920575115U CN209925632U CN 209925632 U CN209925632 U CN 209925632U CN 201920575115 U CN201920575115 U CN 201920575115U CN 209925632 U CN209925632 U CN 209925632U
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Abstract
The utility model relates to the technical field of valves, in particular to a stop valve for flow regulation, which comprises a hand wheel, a valve rod, a valve seat, a valve clack and a hollow valve body, wherein the two sides of the valve body are provided with a water inlet pipeline and a water outlet pipeline which are communicated with each other and have a high inlet and a low outlet structure; the water outlet pipeline is arranged on the other side of the hollow inner cavity and is communicated with the bottom of the hollow inner cavity through a smooth transition arc-shaped pipeline; the pipe diameter of the transition arc-shaped pipeline is smaller than that of the hollow inner cavity, and the height of the upper side surface of the end part of the water outlet pipeline connected with the transition arc-shaped pipeline is smaller than that of the lower side surface of the end part of the water inlet pipeline communicated with the hollow inner cavity. The utility model discloses simple structure, novel in design, reasonable, the installation is fixed, the equipment, maintain more convenient, and the commonality is strong, and the leakproofness is good, and the throttle is effectual, long service life.
Description
Technical Field
The utility model relates to the technical field of valves, in particular to a stop valve for flow control.
Background
A valve is a device for controlling the direction, pressure, and flow rate of a fluid in a fluid system, and is a device capable of controlling the flow rate of a medium (liquid, gas, or powder) in a pipe or equipment by flowing or stopping the medium. The valve is used as a control part in a pipeline fluid conveying system, is used for changing the section of a passage and the flowing direction of a medium, and has the functions of diversion, cut-off, throttling, check, flow splitting, overflow pressure relief and the like. Valves used for fluid control range in variety and size from the simplest shut-off valves to the various valves used in extremely complex autonomous systems. The stop valve, also called stop valve, is one of the most widely used valves, and it is popular because the friction between the sealing surfaces is small in the opening and closing process, it is durable, the opening height is not large, it is easy to manufacture, it is convenient to maintain, it is not only suitable for middle and low pressure, but also for high pressure. The stop valve is an extremely important cut-off valve, the sealing of the stop valve is realized by applying torque to a valve rod, and the valve rod applies pressure to a valve clack in the axial direction, so that a sealing surface of the valve clack is tightly attached to a sealing surface of a valve seat, and the leakage of a medium along a gap between the sealing surfaces is prevented. The sealing pair of the stop valve consists of a valve clack sealing surface and a valve seat sealing surface, and the valve rod drives the valve clack to vertically move along the central line of the valve seat. The stop valve is small in opening height in the opening and closing process, easy to adjust flow, convenient to manufacture and maintain and wide in pressure application range. In the existing high-inlet low-outlet stop valve, the water inlet pipeline and the water outlet pipeline are often arranged at the same horizontal height or the height of the upper side surface of the water outlet pipeline is larger than the height of the lower side surface of the water inlet pipeline, and when the stop valve is operated for a long time, the sealing reliability is not strong, so that the use effect is influenced.
Disclosure of Invention
Therefore, the utility model provides a stop valve for flow control under the condition that does not influence flow control, the leakproofness is good, increases its life.
According to the design scheme provided by the utility model, a stop valve for flow regulation comprises a hand wheel, a valve rod, a valve seat, a valve clack and a hollow valve body, wherein the two sides of the valve body are provided with a water inlet pipeline and a water outlet pipeline which are communicated with each other and have a high inlet and low outlet structure, one end of the valve rod is fixed with the hand wheel, the other end of the valve rod is fixed with the valve clack and is arranged in the hollow inner cavity of the valve body, the valve seat is arranged at the bottom of the hollow inner; the water outlet pipeline is arranged on the other side of the hollow inner cavity and is communicated with the bottom of the hollow inner cavity through a smooth transition arc-shaped pipeline; the pipe diameter of the transition arc-shaped pipeline is smaller than that of the hollow inner cavity, and the height of the upper side surface of the end part of the water outlet pipeline connected with the transition arc-shaped pipeline is smaller than that of the lower side surface of the end part of the water inlet pipeline communicated with the hollow inner cavity.
The bottom of the valve rod installation valve clack is provided with a sealing ring used for being fixed with the valve seat in a sealing mode.
Foretell, the step groove that is used for the fixed band to have the internal thread inserts is seted up to valve body cavity inner chamber upper end, and the cover is equipped with the connecting block that has the external screw thread on the valve rod, and connecting block and inserts work of mutually supporting.
Preferably, the lower end of the connecting block sleeved on the valve rod is also provided with a limiting block.
Preferably, the upper end of the connecting block sleeved on the valve rod is provided with an annular sealing baffle.
Furthermore, a sealing check ring is fixed on the annular sealing baffle, and an annular groove matched with the sealing check ring is arranged on the upper end face of the insert.
The utility model has the advantages that:
the utility model discloses simple structure, novel in design, reasonable, the installation is fixed, the equipment, maintain more convenient, and the commonality is strong, and the leakproofness is good, and the throttle is effectual, and long service life has better market perspective.
Description of the drawings:
FIG. 1 is a schematic view of a shut-off valve in an embodiment;
FIG. 2 is a schematic sectional view of a valve flap according to an embodiment.
The specific implementation mode is as follows:
the reference numeral 1 represents a valve body, the reference numeral 2 represents a valve rod, the reference numeral 3 represents a hand wheel, the reference numeral 4 represents a water inlet pipeline, the reference numeral 5 represents a water outlet pipeline, the reference numeral 6 represents a valve clack, the reference numeral 7 represents a connecting block, the reference numeral 8 represents an annular sealing baffle, the reference numeral 9 represents a sealing ring, the reference numeral 10 represents a sealing retainer ring, the reference numeral 11 represents a limiting block, and the reference numeral 12 represents an insert.
The present invention will be described in further detail with reference to the accompanying drawings and technical solutions, and embodiments of the present invention will be described in detail by way of preferred examples, but the embodiments of the present invention are not limited thereto.
The stop valve is an extremely important cut-off valve, and the sealing of the stop valve is realized by applying torque to a valve rod and applying pressure to a valve clack by the valve rod in the axial direction, so that a sealing surface of the valve clack is tightly attached to a sealing surface of a valve seat, and a medium is prevented from leaking along a gap between the sealing surfaces. The sealing pair of the stop valve consists of a valve clack sealing surface and a valve seat sealing surface, and the valve rod drives the valve clack to vertically move along the central line of the valve seat. In the existing high-inlet low-outlet stop valve, the water inlet pipeline and the water outlet pipeline are often arranged at the same horizontal height or the height of the upper side surface of the water outlet pipeline is larger than the height of the lower side surface of the water inlet pipeline, and when the stop valve is operated for a long time, the sealing reliability is not strong, so that the use effect is influenced. Therefore, the embodiment of the present invention, referring to fig. 1 and 2, provides a stop valve for flow adjustment, comprising a hand wheel, a valve rod, a valve seat, a valve flap, and a hollow valve body, wherein both sides of the valve body are provided with a water inlet pipe and a water outlet pipe of a high-inlet low-outlet structure which are communicated with each other, one end of the valve rod fixes the hand wheel, the other end fixes the valve flap and is placed in the hollow inner cavity of the valve body, the valve seat is arranged at the bottom of the hollow inner cavity, and the water inlet pipe is communicated; the water outlet pipeline is arranged on the other side of the hollow inner cavity and is communicated with the bottom of the hollow inner cavity through a smooth transition arc-shaped pipeline; the pipe diameter of the transition arc-shaped pipeline is smaller than that of the hollow inner cavity, and the height of the upper side surface of the end part of the water outlet pipeline connected with the transition arc-shaped pipeline is smaller than that of the lower side surface of the end part of the water inlet pipeline communicated with the hollow inner cavity. Through the setting of transition arc pipeline, buffering rivers impulsive force plays the guard action to valve member and each connecting line, and the high setting of inlet and outlet water pipe way reaches better sealing performance under the prerequisite of not impression flow control.
The bottom of the valve rod installation valve clack is provided with a sealing ring used for being fixed with the valve seat in a sealing mode, the sealing pair consisting of the valve clack sealing surface and the valve seat sealing surface is used for further sealing through the sealing ring, and the reliability is higher.
Foretell, the step groove that is used for the fixed band to have the internal thread inserts is seted up to valve body cavity inner chamber upper end, and the cover is equipped with the connecting block that has the external screw thread on the valve rod, and connecting block and inserts work of mutually supporting. Threaded connection's connecting block and mosaic piece through rotating the hand wheel, drive the connecting block and screw in or screw out to realize the choked flow of stop valve and cut and adjust the purpose, simple structure, excellent in use effect.
Preferably, the lower extreme of suit connecting block still is provided with the stopper on the valve rod, can further stabilize the connecting block of suit on the screw rod in the use, guarantees the reliable and stable nature of valve rod work.
Preferably, the upper end of the sleeved connecting block on the valve rod is provided with an annular sealing baffle plate, and the hollow inner cavity is sealed under the flow blocking state, so that the pressure stability of the inner cavity of the valve body and the performance reliability of the stop valve are ensured.
Furthermore, a sealing check ring is fixed on the annular sealing baffle, and an annular groove matched with the sealing check ring is formed in the upper end face of the insert to further seal the hollow inner cavity, so that the use is more reliable. Furthermore, the sealing ring and the sealing retainer ring can adopt the leakage-proof physical characteristic of rubber materials, and have good use effect and low cost.
The present invention is not limited to the above-described embodiments, and various changes can be made by those skilled in the art, and any changes which are equivalent or similar to the present invention are intended to be covered by the scope of the claims of the present invention.
Claims (6)
1. A stop valve for flow regulation comprises a hand wheel, a valve rod, a valve seat, a valve clack and a hollow valve body, wherein a water inlet pipeline and a water outlet pipeline which are communicated with each other and have a high-inlet low-outlet structure are arranged on two sides of the valve body; the water outlet pipeline is arranged on the other side of the hollow inner cavity and is communicated with the bottom of the hollow inner cavity through a smooth transition arc-shaped pipeline; the pipe diameter of the transition arc-shaped pipeline is smaller than that of the hollow inner cavity, and the height of the upper side surface of the end part of the water outlet pipeline connected with the transition arc-shaped pipeline is smaller than that of the lower side surface of the end part of the water inlet pipeline communicated with the hollow inner cavity.
2. A stop valve for flow regulation as defined in claim 1, wherein the bottom of the valve stem mounting flap is provided with a sealing ring for sealing securement with the valve seat.
3. The stop valve for flow regulation of claim 1, wherein the upper end of the hollow inner cavity of the valve body is provided with a step groove for fixing the insert with internal threads, the valve rod is sleeved with a connecting block with external threads, and the connecting block and the insert are matched with each other.
4. The stop valve for flow regulation of claim 3, wherein the lower end of the connecting block sleeved on the valve rod is further provided with a limiting block.
5. A stop valve for flow regulation according to claim 3 or 4, wherein the valve stem is provided with an annular sealing baffle at the upper end of the sleeved connection block.
6. A stop valve for flow regulation as defined in claim 5 wherein a sealing land is secured to the annular sealing retainer and an annular groove is provided in the upper face of the insert for engagement with the sealing land.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920575115.1U CN209925632U (en) | 2019-04-25 | 2019-04-25 | Stop valve for flow regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920575115.1U CN209925632U (en) | 2019-04-25 | 2019-04-25 | Stop valve for flow regulation |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209925632U true CN209925632U (en) | 2020-01-10 |
Family
ID=69089642
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920575115.1U Active CN209925632U (en) | 2019-04-25 | 2019-04-25 | Stop valve for flow regulation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209925632U (en) |
-
2019
- 2019-04-25 CN CN201920575115.1U patent/CN209925632U/en active Active
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