CN210218716U - Flow regulating valve - Google Patents
Flow regulating valve Download PDFInfo
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- CN210218716U CN210218716U CN201921043227.9U CN201921043227U CN210218716U CN 210218716 U CN210218716 U CN 210218716U CN 201921043227 U CN201921043227 U CN 201921043227U CN 210218716 U CN210218716 U CN 210218716U
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- core rod
- flow regulating
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Abstract
The utility model relates to the technical field of valves, specifically disclose a flow control valve, including valve gap, core bar, disk seat and valve body, the valve gap is fixed on the valve body, the disk seat setting is equipped with medium inflow passageway and medium outflow passageway in the valve body, and the disk seat is equipped with the intercommunication passageway that feeds through medium inflow passageway and medium outflow passageway, and the head of core bar passes the valve gap sets up in the intercommunication passageway of disk seat, the core bar head is equipped with flow control groove, and flow control groove is helicla flute, straight flute or triangular groove. The utility model discloses flow control valve has set up the flow control groove in core rod head, makes the governing valve have linear, equal percentage flow characteristic, improves the regulation precision of governing valve, and the size of core rod head and disk seat hole no longer receives the influence of restriction area can increase in step simultaneously, strengthens the stability of core rod, improves the life of governing valve.
Description
Technical Field
The utility model belongs to the technical field of the valve, specifically a flow control valve.
Background
The flow regulating valve is mainly applied to working conditions with high requirements on control precision, possible impurities, pollutants and the like in a medium, large working pressure difference and high flow speed, and the minimum controllable Cv value required by working condition parameters is usually 0.01. The flow control valve has certain technical difficulty in design and manufacture at present, the flow control valve is difficult to accurately control the medium flow in a pipeline system at present, and meanwhile, if the medium slightly fluctuates, the valve fails in the process of flowing through the medium, and the service life of the valve is not too long.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a flow control valve sets up the flow control groove at core rod head, promotes the regulation precision of regulating valve, can increase the size of core rod head and disk seat hole, improves the life of core rod.
For solving the technical problem, the utility model provides a flow control valve, including valve gap, core bar, disk seat and valve body, the valve gap is fixed on the valve body, the disk seat sets up in the valve body, be equipped with medium inflow passageway and medium outflow passageway in the valve body, the disk seat is equipped with the intercommunication passageway of intercommunication medium inflow passageway and medium outflow passageway, the head of core bar passes the valve gap sets up in the disk seat intercommunication passageway, the core bar head is equipped with flow control groove, flow control groove is helicla flute, straight flute or three angular grooves.
Further, the head of the core rod is a revolving body, and the flow regulating groove is arranged on the outer side surface of the revolving body.
Preferably, the spiral groove is one of a multi-head spiral groove, an equidistant spiral groove or a variable spiral groove, and the spiral groove is arc-shaped or rectangular.
Preferably, the straight grooves are vertically arranged on the revolving body, and the number of the straight grooves is a plurality and is uniformly distributed on the outer side surface of the revolving body.
Preferably, the triangular grooves are vertically arranged on the revolving body, and the number of the triangular grooves is a plurality and is uniformly distributed on the outer side surface of the revolving body.
Furthermore, a guide sleeve is arranged between the bottom of the valve cover and the core rod, and a first sealing ring is arranged between the guide sleeve and the valve body.
Furthermore, a packing is arranged between the top of the valve cover and the core rod and is compressed through a packing gland.
Specifically, the fit clearance between the head of the core rod and the inner hole of the valve seat is 0.1-0.2 mm.
Further, the valve seat and the valve body are sealed through a second sealing ring.
Specifically, the flow passage includes a medium inflow passage provided below a left side of the valve seat and a medium outflow passage provided above a right side of the valve seat.
The utility model has the advantages that: the utility model discloses flow control valve has set up the flow control groove in core rod head, makes the governing valve have linear, equal percentage flow characteristic, improves the regulation precision of governing valve, and the size of core rod head and disk seat hole no longer receives the influence of restriction area can increase in step simultaneously, strengthens the stability of core rod, improves the life of governing valve.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed for the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic structural view of the flow control valve of the present invention;
FIG. 2 is a schematic structural view of the core bar of the present invention being a straight groove;
fig. 3 is a schematic structural view of the core bar of the present invention being a triangular groove.
In the figure: 1-valve cover, 2-core rod, 3-valve seat, 4-valve body, 5-guide sleeve, 6-first sealing ring, 7-second sealing ring, 8-medium inflow channel, 9-medium outflow channel, 10-packing and 11-packing gland.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the protection scope of the present invention.
In a specific embodiment of the utility model, as shown in fig. 1-3, specifically disclose a flow control valve, including valve gap 1, core bar 2, disk seat 3 and valve body 4, valve gap 1 is fixed on valve body 4, disk seat 3 sets up in valve body 4, disk seat 3 with seal through second sealing ring 7 between the valve body 4.
A guide sleeve 5 is arranged between the bottom of the valve cover 1 and the core rod 2, and a first sealing ring 6 is arranged between the guide sleeve 5 and the valve body 4.
A medium inflow channel 8 and a medium outflow channel 9 are arranged in the valve body 4, the medium inflow channel 8 is arranged below the left side of the valve seat 3, the medium outflow channel 9 is arranged above the right side of the valve seat 3, and the valve seat is provided with a communication channel for communicating the medium inflow channel 8 and the medium outflow channel 9.
The head of the core rod 2 penetrates through the valve cover 1 and is arranged in a communication channel of the valve seat 3, and the fit clearance between the head of the core rod 2 and the inner hole of the valve seat 3 is 0.1-0.2 mm. The head of the core rod 2 is a revolving body, the flow regulating groove is arranged on the outer side surface of the revolving body, and the flow regulating groove is a spiral groove, a straight groove or a triangular groove. The spiral groove is one of a multi-head spiral groove, an equidistant spiral groove or a variable spiral groove, and is arc-shaped or rectangular. When the flow regulating grooves are straight grooves, the straight grooves are vertically arranged on the cylindrical column body, the number of the straight grooves is a plurality, and the straight grooves are uniformly distributed on the outer circular surface of the cylindrical column body. When the flow regulation groove is the triangular groove, the triangular groove is vertically arranged on the cylindrical column body, the number of the triangular groove is a plurality of, and the triangular groove is uniformly distributed on the outer circular surface of the cylindrical column body. An inclined sealing surface sealed with the valve seat 3 is arranged above the head of the core rod 2.
And a packing 10 is arranged between the top of the valve cover 1 and the core rod 2, and the packing 10 is compressed by a packing gland 11.
In another embodiment of the present invention, the head of the core rod 2 is a revolving body, the flow regulating groove is disposed on the outer side surface of the revolving body, and the flow regulating groove is a straight groove. The straight grooves are vertically arranged on the revolving body, and the number of the straight grooves is a plurality of and is uniformly distributed on the outer side surface of the revolving body.
In the utility model discloses a further embodiment, 2 heads of core bar are the solid of revolution, the flow control groove sets up on the lateral surface of the solid of revolution, the flow control groove is the triangular groove, the triangular groove is vertical to be set up on the solid of revolution, the quantity of triangular groove is a plurality of, evenly distributed be in on the lateral surface of the solid of revolution.
The utility model discloses flow control valve's theory of operation is: the fluid enters the valve body from the medium inflow channel, the core rod moves upwards under the action of the execution force, the sealing surface of the core rod is separated from the valve seat, the head part of the core rod gradually leaves the valve seat, the fluid flows from the flow regulating groove of the core rod to the medium outflow channel, and the flow of the fluid is gradually increased along with the moving-out of the core rod; when the valve is closed, the core rod moves downwards under the action of the actuating force, the head of the core rod gradually extends into the valve seat, the flow of the fluid is gradually reduced, and when the sealing surface is tightly attached to the valve seat, the valve is closed.
The embodiment disclosed herein is merely a preferred embodiment, which should not be taken as limiting the scope of the invention, but is also included within the scope of the invention.
Claims (10)
1. A flow regulating valve comprises a valve cover (1), a core rod (2), a valve seat (3) and a valve body (4), wherein the valve cover (1) is fixed on the valve body (4), the valve seat (3) is arranged in the valve body (4), a medium inflow channel (8) and a medium outflow channel (9) are arranged in the valve body (4), the flow regulating valve is characterized in that the valve seat is provided with a communication channel for communicating the medium inflow channel (8) with the medium outflow channel (9), the head of the core rod (2) penetrates through the valve cover (1) and is arranged in the communication channel of the valve seat (3), the head of the core rod (2) is provided with a flow regulating groove, and the flow regulating groove is a spiral groove, a straight groove or a triangular groove.
2. A flow regulating valve according to claim 1, characterized in that the head of the core rod (2) is a solid of revolution, the flow regulating groove being provided on the outer side face of the solid of revolution.
3. A flow regulating valve as claimed in claim 1, wherein the spiral groove is one of a multi-start spiral groove, an equidistant spiral groove or a variable spiral groove, and the spiral groove is arc-shaped or rectangular.
4. The flow control valve according to claim 2, wherein said straight grooves are vertically arranged on said rotor, and the number of said straight grooves is several, and said straight grooves are uniformly distributed on the outer side surface of said rotor.
5. The flow control valve according to claim 2, wherein the triangular grooves are vertically arranged on the rotator, and the number of the triangular grooves is several and is uniformly distributed on the outer side surface of the rotator.
6. A flow regulating valve according to claim 1, characterized in that a guide sleeve (5) is arranged between the bottom of the valve cover (1) and the core rod (2), and a first sealing ring (6) is arranged between the guide sleeve (5) and the valve body (4).
7. A flow regulating valve according to claim 1, characterised in that a packing (10) is arranged between the top of the valve cover (1) and the core rod (2), the packing (10) being compressed by a packing gland (11).
8. A flow regulating valve according to claim 1, characterized in that the fit clearance between the head of the core rod (2) and the inner hole of the valve seat (3) is 0.1 mm-0.2 mm.
9. A flow regulating valve according to claim 1, characterised in that the valve seat (3) is sealed (7) to the valve body (4) by means of a second sealing ring.
10. A flow regulating valve according to claim 1, characterized in that the medium inflow channel (8) is arranged below the left side of the valve seat (3) and the medium outflow channel (9) is arranged above the right side of the valve seat (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921043227.9U CN210218716U (en) | 2019-07-05 | 2019-07-05 | Flow regulating valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921043227.9U CN210218716U (en) | 2019-07-05 | 2019-07-05 | Flow regulating valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210218716U true CN210218716U (en) | 2020-03-31 |
Family
ID=69936250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921043227.9U Active CN210218716U (en) | 2019-07-05 | 2019-07-05 | Flow regulating valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210218716U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956466A (en) * | 2022-06-02 | 2022-08-30 | 安阳工学院 | System and method for recycling pig manure wastewater to farmland irrigation |
-
2019
- 2019-07-05 CN CN201921043227.9U patent/CN210218716U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114956466A (en) * | 2022-06-02 | 2022-08-30 | 安阳工学院 | System and method for recycling pig manure wastewater to farmland irrigation |
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