CN211371299U - Pneumatic small-flow regulating valve mechanism - Google Patents
Pneumatic small-flow regulating valve mechanism Download PDFInfo
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- CN211371299U CN211371299U CN201922478721.4U CN201922478721U CN211371299U CN 211371299 U CN211371299 U CN 211371299U CN 201922478721 U CN201922478721 U CN 201922478721U CN 211371299 U CN211371299 U CN 211371299U
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Abstract
The utility model discloses a pneumatic small flow regulating valve mechanism, which comprises a valve rod and a valve seat matched with the valve rod; the valve is characterized in that one end of the valve rod is provided with a valve core, and the other end of the valve rod is provided with an external thread; the valve core is of a cylindrical structure; a flow curve is arranged on one surface of the valve core; the valve rod is arranged on the valve seat; a medium flowing hole and a conical hole are formed in the valve seat; the medium flowing hole is communicated with the conical hole; a chamfer is arranged on the medium flowing hole; and a fixed step is arranged on the valve seat. The utility model discloses simple structure, convenient to use through high accuracy processing and cooperation, realizes low discharge control.
Description
[ technical field ] A method for producing a semiconductor device
The utility model relates to a governing valve technical field specifically indicates a pneumatic little flow control valve mechanism.
[ background of the invention ]
With the increasing automation degree of the industrial industry, the requirements on various pneumatic control valves are also increasing, the flow control valves pressurize, pressurize or release the pressure difference at two ends of the valves according to the flow characteristics of the valves, the opening degree of the valves depends on the design of valve core molded lines, the sealing is realized by utilizing the sealing fit between the valve cores and the valve seats, as shown in fig. 1, flow curves are arranged at two ends of a conventional valve core in the prior art, the small flow cannot be controlled, a flow control valve needs to be installed behind the valve to control the flow, the pressure of the flow control valve installed later is increased, the service life is shortened, the processing precision of the flow curve of the conventional valve core is difficult to control, the change of the flow curve is large, and the small flow cannot be controlled. To this end, a pneumatic small-flow regulating valve mechanism is proposed.
[ summary of the invention ]
The utility model aims at solving the conventional case both ends among the prior art and all being equipped with the flow curve, can't control little flow, need still need install flow control valve behind the valve and control flow, the flow control valve pressure of installation at the back can increase like this, reduce life, and conventional case flow curve machining precision is difficult to control moreover, goes to change greatly to lead to can not control little flow scheduling problem and provide a pneumatic little flow control valve
In order to achieve the above purpose, the utility model provides a following technical scheme: a pneumatic small flow regulating valve comprises a valve rod and a valve seat matched with the valve rod; the valve is characterized in that one end of the valve rod is provided with a valve core, and the other end of the valve rod is provided with an external thread; the valve core is of a cylindrical structure; a flow curve is arranged on one surface of the valve core; the valve rod is mounted on the valve seat.
Preferably, a medium flowing hole and a conical hole are formed in the valve seat; the medium flowing hole is communicated with the conical hole; a chamfer is arranged on the medium flowing hole; and a fixed step is arranged on the valve seat.
Preferably, the flow rate curve is divided into a first flow rate curve and a second flow rate curve; the first flow curve and the valve seat are in a conical structure; the second flow curve and the valve seat are in a trapezoidal structure; the second flow rate curve is disposed below the first flow rate curve.
Preferably, the valve core adopts a plunger type valve core; the valve core and the valve rod are integrally processed.
The utility model has the advantages that: the regulating valve is simple in structure, convenient to use and capable of achieving small flow control through high-precision machining and matching.
[ description of the drawings ]
Fig. 1 is a schematic structural diagram of the prior art of the present invention.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a partial enlarged view of the position a of the present invention.
Fig. 4 is a schematic structural diagram of the valve seat of the present invention.
Fig. 5 is a schematic structural diagram of the valve rod of the present invention.
Fig. 6 is a working state diagram of the present invention.
Fig. 7 is a working state diagram of the present invention.
Illustration of the drawings: 1, valve seat; 2, a valve rod; 3, external thread; 4 flow rate curve; 401 first flow curve; 402 a second flow curve; 5 medium flow holes; 6, a conical hole; 7, chamfering; 8, fixing a step; and 9, a valve core.
Detailed Description
The pneumatic small flow control valve of the present invention will be further described with reference to the accompanying drawings.
Referring to fig. 1-3, the pneumatic small flow control valve in the present embodiment includes a valve stem 2 and a valve seat 1 cooperating with the valve stem 2; the valve is characterized in that one end of the valve rod 2 is provided with a valve core 9, and the other end is provided with an external thread 3; the valve core 9 is of a cylindrical structure; a flow curve 4 is arranged on one side of the valve core 9; the valve rod 2 is arranged on the valve seat 1; a medium flowing hole 5 and a conical hole 6 are arranged in the valve seat 1; the medium flowing hole 6 is communicated with the conical hole 6; a chamfer 7 is arranged on the medium flowing hole 5; a fixed step 8 is arranged on the valve seat 1; the flow rate curves are divided into a first flow rate curve 401 and a second flow rate curve 402; the first flow curve 401 and the valve seat 1 are in a conical structure; the second flow curve 402 and the valve seat 1 are in a trapezoidal structure; the second flow curve 402 is arranged below the first flow curve 401; the valve core 9 adopts a plunger type valve core; the valve core 9 and the valve rod 2 are integrally processed;
the utility model discloses in, at first install valve rod 2 on disk seat 1, be equipped with case 9 on the valve rod 2, case 9 single face sets up flow curve 4, the dimensional error of processing is within 0.01mm, 2 poles of valve cooperate fixed mounting on disk seat 1 through case 8 and medium flow hole 5, make case 8 and disk seat 1's fit clearance between 0.02mm, and also need make case 8 and disk seat 1's concentricity between 0.02mm, through such high accuracy processing and mutual cooperation, rethread compressed air drives valve rod 2 and case 8 and carries out the up-and-down motion, reach the control of low discharge.
The beneficial effects of the utility model, this governing valve simple structure, high durability and convenient use, through being equipped with case 8 on the valve rod 2, case 8 single face sets up flow curve 4, the dimensional error of processing is within 0.01mm, valve rod 2 is matched with fixed mounting on disk seat 1 through case 8 and medium flow hole 5, make the fit clearance of case 8 and disk seat 1 between 0.02mm, and also need to make the concentricity of case 8 and disk seat 1 between 0.02mm, through such high-precision processing and mutual cooperation, rethread compressed air drives valve rod 2 and case 8 to carry out the up-and-down motion, reach the effect that the control low discharge flows like this; by providing the first flow rate curve 401 and the second flow rate curve 402 on the spool 9, the controlled flow rates will be different when the valve stem 2 is raised to different heights.
The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.
Claims (4)
1. A pneumatic small-flow regulating valve mechanism comprises a valve rod (2) and a valve seat (1) matched with the valve rod (2); the valve is characterized in that one end of the valve rod (2) is provided with a valve core (9), and the other end is provided with an external thread (3); the valve core (9) is of a cylindrical structure; a flow curve (4) is arranged on one surface of the valve core (9); the valve rod (2) is arranged on the valve seat (1).
2. A pneumatic small flow regulator valve mechanism as defined in claim 1 wherein: a medium flowing hole (5) and a conical hole (6) are formed in the valve seat (1); the medium flowing hole (5) is communicated with the conical hole (6); a chamfer (7) is arranged on the medium flowing hole (5); and a fixed step (8) is arranged on the valve seat (1).
3. A pneumatic small flow regulator valve mechanism as defined in claim 1 wherein: the flow curve is divided into a first flow curve (401) and a second flow curve (402); the first flow curve (401) and the valve seat (1) are in a conical structure; the second flow curve (402) and the valve seat (1) are in a trapezoidal structure; the second flow rate curve (402) is arranged below the first flow rate curve (401).
4. A pneumatic small flow regulator valve mechanism as defined in claim 1 wherein: the valve core (9) adopts a plunger type valve core; the valve core (9) and the valve rod (2) are integrally processed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922478721.4U CN211371299U (en) | 2019-12-31 | 2019-12-31 | Pneumatic small-flow regulating valve mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922478721.4U CN211371299U (en) | 2019-12-31 | 2019-12-31 | Pneumatic small-flow regulating valve mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211371299U true CN211371299U (en) | 2020-08-28 |
Family
ID=72169805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922478721.4U Active CN211371299U (en) | 2019-12-31 | 2019-12-31 | Pneumatic small-flow regulating valve mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211371299U (en) |
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2019
- 2019-12-31 CN CN201922478721.4U patent/CN211371299U/en active Active
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