CN212584280U - Pressure relief type regulating valve with double valve core structure - Google Patents

Pressure relief type regulating valve with double valve core structure Download PDF

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Publication number
CN212584280U
CN212584280U CN202021092449.2U CN202021092449U CN212584280U CN 212584280 U CN212584280 U CN 212584280U CN 202021092449 U CN202021092449 U CN 202021092449U CN 212584280 U CN212584280 U CN 212584280U
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Prior art keywords
valve
valve core
hole
small
core
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CN202021092449.2U
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Chinese (zh)
Inventor
陆元成
林峰
李红伟
林童
舒婷洁
叶莉莉
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Zhejiang Beier Control Valve Co ltd
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Zhejiang Beier Control Valve Co ltd
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Abstract

The utility model discloses a pressure relief type regulating valve with a double-valve-core structure, which comprises a valve body, a valve cover and a valve rod, wherein a valve cavity is arranged in the valve body, a valve cage is vertically arranged in the valve cavity, a medium inflow channel is arranged at the right end of the valve body, a medium outflow channel is arranged at the left end of the valve body, and a first medium inflow through hole is arranged at the lower end of the right end surface of the valve cage; the valve comprises a valve cage, a valve core installation cavity is vertically arranged in the valve core installation cavity, a large valve core, a small valve core and a valve core spring are arranged in the valve core installation cavity, the large valve core comprises a large valve core outer shell and a large valve core inner shell, a small valve core movable cavity is arranged in the large valve core inner shell, the large valve core outer shell is aligned to a first medium inflow through hole, a second medium inflow through hole is formed in the position, where the first medium flows into the through hole, the large valve core inner shell is provided with a third medium inflow through hole, a first medium outflow through hole is formed in the bottom of the large valve. Above-mentioned technical scheme, structural design is reasonable, operating force is little, be difficult for leaking, adjustment performance is good, operate steadily and the practicality is good.

Description

Pressure relief type regulating valve with double valve core structure
Technical Field
The utility model relates to a governing valve technical field, concretely relates to pressure release formula governing valve of double-valve-element structure.
Background
The regulating valve is also called a control valve, and in the field of industrial automation process control, the final control element for changing the process parameters of medium flow, pressure, temperature, liquid level and the like by power operation through receiving the control signal output by a regulating control unit. Generally consisting of an actuator and a valve.
However, the existing regulating valve has the following defects: structural design is unreasonable, and pressure differential is big when having to close, and required power is great when opening or closing, and it is big to let out the leakage rate, and the regulation performance is relatively poor, moves unstably, and the practicality is poor.
SUMMERY OF THE UTILITY MODEL
Not enough to prior art exists, the utility model aims to provide a two case structure pressure relief formula governing valves that structural design is reasonable, operating force is little, be difficult for leaking, regulation performance is good, operate steadily and the practicality is good.
In order to achieve the above purpose, the utility model provides a following technical scheme: a pressure relief type regulating valve with a double-valve-core structure comprises a valve body, a valve cover and a valve rod, wherein a valve cavity is arranged in the valve body, a valve rod through hole is vertically formed in the middle of the valve cover, the lower end of the valve rod penetrates through the valve rod through hole and then extends into the valve cavity, the valve cover is detachably connected with the upper end of the valve body, a valve cage is vertically arranged in the valve cavity, a medium inflow channel is formed in the right end of the valve body, a medium outflow channel is formed in the left end of the valve body, and a first medium inflow through hole is formed in the position; a valve core installation cavity is vertically arranged in the valve cage, a large valve core, a small valve core and a valve core spring are arranged in the valve core installation cavity, the large valve core comprises a large valve core outer shell and a large valve core inner shell, a small valve core movable cavity is arranged in the large valve core inner shell, the small valve core and the valve core spring are both arranged in the small valve core movable cavity in an embedded mode, the valve core spring is sleeved at the lower end of the small valve core, and the lower end of the valve core spring is abutted against the inner bottom surface of the small valve core movable cavity; the large valve core outer shell is provided with a second medium inflow through hole aligned with the first medium inflow through hole, the large valve core inner shell is provided with a third medium inflow through hole aligned with the second medium inflow through hole, the bottom of the large valve core outer shell is provided with a first medium outflow through hole communicated with the small valve core movable cavity, and the bottom of the small valve core is pressed against the upper port of the first medium outflow through hole.
The utility model discloses further set up to: the bottom of the small valve core is provided with an annular groove aligned with the edge of the upper port of the first medium outflow through hole, a valve core sealing ring is arranged in the annular groove, and the small valve core is sealed at the joint of the valve core sealing ring and the edge of the upper port of the first medium outflow through hole.
The utility model discloses still further set up to: the valve body is provided with a step type through hole in the position right below the valve cage, a winding gasket is arranged on the step surface of the step type through hole, a limiting groove matched with the step surface of the step type through hole is formed in the lower end of the valve cage, the lower end of the valve cage is connected with the step surface of the step type through hole, and the lower end of the valve cage and the inner wall surface of the step type through hole are sealed through the winding gasket.
The utility model discloses still further set up to: the lower end of a valve core installation cavity of the valve cage is communicated with the medium outflow channel, and the valve core installation cavity is communicated with the first medium inflow through hole.
The utility model discloses still further set up to: the upper end of the small valve core is sleeved with a valve core cover, the valve core cover is fixedly connected with the large valve core inner shell through a bolt, and the large valve core inner shell is fixedly welded with the large valve core outer shell or fixedly connected with the large valve core outer shell through a screw.
The utility model discloses still further set up to: the upper end of the small valve core is fixedly connected with the lower end of the valve rod.
The utility model has the advantages that: compared with the prior art, the structure of the utility model is more reasonable, the valve rod drives the small valve core to move up and down, and the small valve core drives the big valve core to move up and down, because the small valve core pressure relief structure is designed, the small valve core with the adjusting performance is slowly opened when the valve operates, and after partial pressure is relieved, the pressure of the valve is reduced, so that the small valve core can drive the big valve core to open and adjust; when the valve is closed, the small valve core drives the large valve core to close; the good cutting-off and adjusting performance of the valve is effectively ensured; the structure design is reasonable, the operating force is little, the leakage is not easy, the adjusting performance is good, the operation is stable and the practicability is good.
The invention is further described with reference to the drawings and the specific embodiments.
Drawings
Fig. 1 is a schematic structural diagram of an embodiment of the present invention;
fig. 2 is a schematic view of a partial structure according to an embodiment of the present invention.
Detailed Description
In the description of the present embodiment, it should be noted that, as the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "front", "rear", etc. appear, the indicated orientation or positional relationship thereof is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the indicated device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" as appearing herein are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1 and 2, the utility model discloses a pressure relief type regulating valve with a double-valve core structure, which comprises a valve body 1, a valve cover 2 and a valve rod 3, wherein a valve cavity 11 is arranged in the valve body 1, a valve rod through hole 21 is vertically arranged in the middle of the valve cover 2, the lower end of the valve rod 3 passes through the valve rod through hole 21 and then extends into the valve cavity 11, the valve cover 2 is detachably connected with the upper end of the valve body 1, a valve cage 4 is vertically arranged in the valve cavity 11, a medium inflow channel 12 is arranged at the right end of the valve body 1, a medium outflow channel 13 is arranged at the left end of the valve body 1, and a first medium inflow through hole 41 is arranged at the position of the lower; a valve core installation cavity 42 is vertically arranged in the valve cage 4, a large valve core 5, a small valve core 6 and a valve core spring 7 are arranged in the valve core installation cavity 42, the large valve core 5 comprises a large valve core outer shell 51 and a large valve core inner shell 52, a small valve core movable cavity 521 is arranged in the large valve core inner shell 52, the small valve core 6 and the valve core spring 7 are both arranged in the small valve core movable cavity 521 in an embedded mode, the valve core spring 7 is sleeved at the lower end of the small valve core 6, and the lower end of the valve core spring 7 is abutted against the inner bottom surface of the small valve core movable cavity 521; the big valve core outer shell 51 is provided with a second medium inflow through hole 511 aligned with the first medium inflow through hole 41, the big valve core inner shell 52 is provided with a third medium inflow through hole 522 aligned with the second medium inflow through hole 511, the bottom of the big valve core outer shell 51 is provided with a first medium outflow through hole 512, the first medium outflow through hole 512 is communicated with the small valve core movable cavity 521, and the bottom of the small valve core 6 is pressed against the upper port of the first medium outflow through hole 512.
Preferably, the valve cover 2 is fixedly connected with the upper end of the valve body 1 through a bolt; an annular groove is formed in the bottom of the small valve core 6 and aligned to the edge of the upper port of the first medium outflow through hole 512, a valve core sealing ring 8 is arranged in the annular groove, and the small valve core 6 is sealed at the joint of the valve core sealing ring 8 and the edge of the upper port of the first medium outflow through hole 512.
For making the utility model discloses the structure sets up more rationally, as preferred, this embodiment valve body 1 is located and is provided with a step through-hole 14 under the valve cage 4, be provided with a winding gasket 9 on the step face of step through-hole 14, valve cage 4 lower extreme be provided with one with the spacing recess that step face of step through-hole 14 matches, valve cage 4 lower extreme is connected with step through-hole 14's step face to constitute through winding gasket 9 and seal between 4 lower extremes of valve cage and the internal face of step through-hole 14.
The lower end of a valve core installation cavity 42 of the valve cage 4 is communicated with the medium outflow channel 13, and the valve core installation cavity 42 is communicated with the first medium inflow through hole 41.
The upper end of the small valve core 6 is sleeved with a valve core cover 10, the valve core cover 10 is fixedly connected with a large valve core inner shell 52 through a bolt, and the large valve core inner shell 52 is fixedly welded with a large valve core outer shell 51 or fixedly connected through a screw.
The upper end of the small valve core 6 is fixedly connected with the lower end of the valve rod 3. Preferably, the lower end of the valve rod 3 and the upper end of the small valve core 6 are fixed by welding or bolts.
In practical application, the valve rod drives the small valve core to move up and down, and the small valve core drives the large valve core to move up and down, and due to the design of the small valve core pressure relief structure, the small valve core with the adjusting performance is slowly opened when the valve operates, and after partial pressure is relieved, the pressure of the valve is reduced, so that the small valve core can drive the large valve core to open and adjust; when the valve is closed, the small valve core drives the large valve core to close; the good cutting-off and adjusting performance of the valve is effectively ensured; the structure design is reasonable, the operating force is little, the leakage is not easy, the adjusting performance is good, the operation is stable and the practicability is good.
The above embodiments are only used for further explanation of the present invention, and it is not understood that the present invention is limited by the protection scope of the present invention, and the technical engineers in the field are right according to the above contents of the present invention.

Claims (6)

1. The utility model provides a two case structure pressure relief formula governing valve, includes valve body (1), valve gap (2) and valve rod (3), be provided with valve pocket (11) in valve body (1), valve gap (2) middle part is vertical to be provided with one valve rod through-hole (21), stretch into in valve pocket (11) after valve rod (3) lower extreme passes valve rod through-hole (21), valve gap (2) can be dismantled with valve body (1) upper end and be connected its characterized in that: a valve cage (4) is vertically arranged in the valve cavity (11), a medium inflow channel (12) is arranged at the right end of the valve body (1), a medium outflow channel (13) is arranged at the left end of the valve body (1), and a first medium inflow through hole (41) is formed in the position, aligned with the medium inflow channel (12), of the lower end of the right end face of the valve cage (4); a valve core installation cavity (42) is vertically arranged in the valve cage (4), a large valve core (5), a small valve core (6) and a valve core spring (7) are arranged in the valve core installation cavity (42), the large valve core (5) comprises a large valve core outer shell (51) and a large valve core inner shell (52), a small valve core movable cavity (521) is arranged in the large valve core inner shell (52), the small valve core (6) and the valve core spring (7) are both arranged in the small valve core movable cavity (521) in an embedded mode, the valve core spring (7) is sleeved at the lower end of the small valve core (6), and the lower end of the valve core spring (7) is pressed on the inner bottom surface of the small valve core movable cavity (521); the large valve core outer shell (51) is provided with a second medium inflow through hole (511) aligned with the first medium inflow through hole (41), the large valve core inner shell (52) is provided with a third medium inflow through hole (522) aligned with the second medium inflow through hole (511), the bottom of the large valve core outer shell (51) is provided with a first medium outflow through hole (512), the first medium outflow through hole (512) is communicated with the small valve core movable cavity (521), and the bottom of the small valve core (6) is pressed against the upper port of the first medium outflow through hole (512).
2. The dual-spool pressure relief type regulator valve according to claim 1, wherein: an annular groove is formed in the edge position, aligned to the upper port of the first medium outflow through hole (512), of the bottom of the small valve core (6), a valve core sealing ring (8) is arranged in the annular groove, and the small valve core (6) is sealed at the joint of the valve core sealing ring (8) and the edge of the upper port of the first medium outflow through hole (512).
3. The dual-spool pressure relief type regulator valve according to claim 2, wherein: the valve body (1) is provided with a step type through hole (14) under the position of the valve cage (4), a winding gasket (9) is arranged on the step surface of the step type through hole (14), the lower end of the valve cage (4) is provided with a limiting groove matched with the step surface of the step type through hole (14), the lower end of the valve cage (4) is connected with the step surface of the step type through hole (14), and sealing is formed between the lower end of the valve cage (4) and the inner wall surface of the step type through hole (14) through the winding gasket (9).
4. The dual-spool pressure relief regulator valve according to claim 3, wherein: the lower end of a valve core installation cavity (42) of the valve cage (4) is communicated with the medium outflow channel (13), and the valve core installation cavity (42) is communicated with the first medium inflow through hole (41).
5. The dual-spool pressure relief regulator valve according to claim 4, wherein: the upper end of the small valve core (6) is sleeved with a valve core cover (10), the valve core cover (10) is fixedly connected with a large valve core inner shell (52) through a bolt, and the large valve core inner shell (52) is fixedly welded or fixedly connected with a large valve core outer shell (51) through a screw.
6. The dual-spool pressure relief regulator valve according to claim 5, wherein: the upper end of the small valve core (6) is fixedly connected with the lower end of the valve rod (3).
CN202021092449.2U 2020-06-15 2020-06-15 Pressure relief type regulating valve with double valve core structure Active CN212584280U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202021092449.2U CN212584280U (en) 2020-06-15 2020-06-15 Pressure relief type regulating valve with double valve core structure

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202021092449.2U CN212584280U (en) 2020-06-15 2020-06-15 Pressure relief type regulating valve with double valve core structure

Publications (1)

Publication Number Publication Date
CN212584280U true CN212584280U (en) 2021-02-23

Family

ID=74650553

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202021092449.2U Active CN212584280U (en) 2020-06-15 2020-06-15 Pressure relief type regulating valve with double valve core structure

Country Status (1)

Country Link
CN (1) CN212584280U (en)

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