CN217355582U

CN217355582U - High-precision control valve

Info

Publication number: CN217355582U
Application number: CN202220869555.XU
Authority: CN
Inventors: 管云凡; 胡宝; 杨选辰; 杨贤璋
Original assignee: Zhejiang Diantai Valve Industry Co ltd
Current assignee: Zhejiang Diantai Valve Industry Co ltd
Priority date: 2022-04-15
Filing date: 2022-04-15
Publication date: 2022-09-02
Anticipated expiration: 2032-04-15

Abstract

The utility model relates to the technical field of valves, in particular to a high-precision control valve which improves the flow control precision of the valve and the practicability; the water inlet valve comprises a valve body, a communication base, a valve top, a valve core, a valve rod, a hand wheel and a pre-tightening device, the left end of the valve body is provided with a water inlet cavity, the right end of the valve body is provided with a water drainage cavity, a communication hole is formed between the water inlet cavity and the water drainage cavity, the top end of the valve body is provided with an upper opening communicated with the water drainage cavity, the communication base is hermetically installed at the position of the communication hole, the top end of the communication base is provided with a mounting hole communicated with the water drainage cavity and the water inlet cavity, internal threads are arranged in the mounting hole of the communication base, the valve top is hermetically installed at the upper opening at the top end of the valve body, a cavity is arranged inside the valve core, a plurality of groups of drainage holes communicated with the cavity of the valve core are formed in the outer circumferential wall of the valve core, external threads are arranged on the outer circumferential wall of the valve core, the external threads are inserted into the mounting hole of the communication base, and the bottom end of the valve core is provided with a lower opening communicated with the water inlet cavity and the cavity of the valve core.

Description

High-precision control valve

Technical Field

The utility model relates to a technical field of valve especially relates to a high accuracy control valve.

Background

In the construction process of water route pipe network, often need install the velocity of flow control valve in the pipeline, current valve is in the use, and flow control precision is lower, and the practicality is relatively poor.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the utility model provides a promote the flow control precision of valve improves the high accuracy control valve of practicality.

The utility model discloses a high-precision control valve, which comprises a valve body, a communicating seat, a valve top, a valve core, a valve rod, a hand wheel and a pre-tightening device, wherein the left end of the valve body is provided with a water inlet cavity, the right end of the valve body is provided with a water discharge cavity, a communicating hole is arranged between the water inlet cavity and the water discharge cavity, the top end of the valve body is provided with an upper opening communicated with the water discharge cavity, the communicating seat is hermetically arranged at the communicating hole, the top end of the communicating seat is provided with a mounting hole communicated with the water discharge cavity and the water inlet cavity, an internal thread is arranged in the mounting hole of the communicating seat, the valve top is hermetically arranged at the upper opening at the top end of the valve body, the cavity is arranged inside the valve core, a plurality of groups of water discharge holes communicated with the valve core cavity are arranged on the circumferential outer wall of the valve core, an external thread is arranged on the circumferential outer wall of the valve core, the external thread is inserted into the mounting hole of the communicating seat, the bottom end of the valve core is provided with a lower opening communicated with the water inlet cavity and the valve core cavity, the bottom end of the valve rod is sealed and can be rotated to penetrate through the valve top to stretch into the inside of the drainage cavity, the bottom end of the valve rod is fixedly connected with the top end of the valve core, a pre-tightening device used for reducing a connecting gap between the internal thread and the external thread is installed inside the valve top, flow speed scale marks are arranged on the outer wall of the circumference of the valve rod, and the hand wheel is fixedly installed on the top end of the valve rod.

The utility model discloses a high accuracy control valve, wherein preloading device still includes the retaining ring, spring and annular cover plate, the top on valve top is provided with the installation cavity, the retaining ring fixed cover is established on the circumference outer wall of valve rod, the retaining ring is located inside the installation cavity, the spring housing is established on the valve rod, the bottom and the retaining ring fixed connection of spring, the slidable cover of annular cover plate is established on the valve rod, and annular cover plate fixed mounting is on the top on valve top, the bottom of annular cover plate is provided with first sealing washer, first sealing washer is sealed to be inlayed and is established on the valve top, the top and the first sealing washer fixed connection of spring.

The utility model discloses a high accuracy control valve still includes solid fixed ring and multiunit bolt, and the fixed cover of solid fixed ring is established at the circumference outer wall top on valve top to gu fixed ring relies on multiunit bolt fixed mounting to install the top at the valve body.

The utility model discloses a high accuracy control valve, the left end of the cavity of intaking is provided with the flange of intaking, and the right-hand member of drainage cavity is provided with the drainage flange.

The utility model discloses a high accuracy control valve still includes the second sealing washer, and the rotatable cover of second sealing washer is established on the valve rod to the fixed bottom of inlaying at the valve top of second sealing washer.

The utility model discloses a high accuracy control valve, the front end of valve body is provided with the flow direction indicator.

The utility model discloses a high accuracy control valve, the top of hand wheel is provided with vertical handle.

Compared with the prior art, the beneficial effects of the utility model are that: through revolving soon the hand wheel, it is rotatory to make the valve rod drive the case, under the connection effect of internal thread and external screw thread, adjusts the relative position of case and intercommunication seat to the adjustment can with the quantity of the wash port of drainage cavity intercommunication, thereby adjust the chamber of intaking and drainage cavity intercommunication area, reach high accuracy control flow's effect, through setting up the velocity of flow scale mark, the audio-visual control flow of being convenient for promotes the flow control precision of valve, improves the practicality.

Drawings

Fig. 1 is a schematic structural diagram of the present invention;

fig. 2 is a front view of the present invention;

FIG. 3 is an enlarged schematic view of the structural connection of the communication socket to the valve cartridge;

FIG. 4 is an enlarged schematic view of the construction of the pretensioning device;

in the drawings, the reference numbers: 1. a valve body; 2. a water inlet chamber; 3. a drainage chamber; 4. a communication base; 5. a valve top; 6. a valve core; 7. a drain hole; 8. an internal thread; 9. an external thread; 10. a valve stem; 11. a flow rate scale line; 12. a hand wheel; 13. a mounting cavity; 14. a retainer ring; 15. a spring; 16. an annular cover plate; 17. a first seal ring; 18. a fixing ring; 19. a bolt; 20. a water inlet flange; 21. a drain flange; 22. a second seal ring; 23. and a flow direction indicator.

Detailed Description

The following detailed description of the embodiments of the present invention is made with reference to the accompanying drawings and examples. The following examples are intended to illustrate the invention, but are not intended to limit the scope of the invention.

As shown in fig. 1 to 4, the high-precision control valve of the present invention comprises a valve body 1, a communicating seat 4, a valve top 5, a valve core 6, a valve rod 10, a hand wheel 12 and a pre-tightening device, wherein the left end of the valve body 1 is provided with a water inlet chamber 2, the right end of the valve body 1 is provided with a water discharge chamber 3, a communication hole is arranged between the water inlet chamber 2 and the water discharge chamber 3, the top end of the valve body 1 is provided with an upper opening communicated with the water discharge chamber 3, the communicating seat 4 is hermetically mounted at the communication hole, the top end of the communicating seat 4 is provided with a mounting hole communicated with the water discharge chamber 3 and the water inlet chamber 2, an internal thread 8 is arranged in the mounting hole of the communicating seat 4, the valve top 5 is hermetically mounted at the upper opening at the top end of the valve body 1, the interior of the valve core 6 is provided with a chamber, the circumferential outer wall of the valve core 6 is provided with a plurality of water discharge holes 7 communicated with the chamber of the valve core 6, the circumferential outer wall of the valve core 6 is provided with an external thread 9, the external thread 9 is inserted into the mounting hole of the communicating seat 4 in a threaded manner, the bottom end of the valve core 6 is provided with a lower opening communicating the water inlet cavity 2 with the cavity of the valve core 6, the bottom end of the valve rod 10 passes through the valve top 5 in a sealing and rotatable manner and extends into the water drainage cavity 3, the bottom end of the valve rod 10 is fixedly connected with the top end of the valve core 6, a pre-tightening device for reducing a connecting gap between the internal thread 8 and the external thread 9 is mounted inside the valve top 5, the circumferential outer wall of the valve rod 10 is provided with a flow rate scale mark 11, and the hand wheel 12 is fixedly mounted at the top end of the valve rod 10; through revolving wrong hand wheel 12, it is rotatory to make valve rod 10 drive case 6, under the joint action of internal thread 8 and external screw thread 9, adjusts the relative position of case 6 and intercommunication seat 4 to the adjustment can with the quantity of the wash port 7 of drainage cavity 3 intercommunication, thereby adjust the chamber 2 that intakes and the 3 intercommunication areas of drainage cavity, reach the effect of high accuracy control flow, through setting up velocity of flow scale mark 11, the audio-visual control flow of being convenient for promotes the flow control precision of valve, improves the practicality.

The utility model discloses a high accuracy control valve, wherein preloading device still includes retaining ring 14, spring 15 and annular cover plate 16, the top of valve top 5 is provided with installation cavity 13, retaining ring 14 fixes the cover and establishes on the circumference outer wall of valve rod 10, retaining ring 14 is located installation cavity 13 inside, spring 15 cover is established on valve rod 10, the bottom and the retaining ring 14 fixed connection of spring 15, annular cover plate 16 slidable cover is established on valve rod 10, and annular cover plate 16 fixed mounting is at the top of valve top 5, the bottom of annular cover plate 16 is provided with first sealing washer 17, first sealing washer 17 seals to inlay and establishes on valve top 5, the top and the first sealing washer 17 fixed connection of spring 15; through the setting, utilize spring 15 to the elastic pressure of retaining ring 14, can make valve rod 10 compress tightly case 6 on intercommunication seat 4 to reach and reduce the gap between external screw thread 9 and the internal thread 8, lifting means's leakproofness improves the practicality.

The utility model discloses a high-precision control valve, still include solid fixed ring 18 and multiunit bolt 19, the solid fixed ring 18 fixed cover is established at the circumference outer wall top of valve top 5, and solid fixed ring 18 relies on multiunit bolt 19 spiral shell dress fixed mounting at the top of valve body 1; through the arrangement, the connection strength of the valve top 5 and the valve body 1 is increased, and the stability of the equipment is improved.

The utility model discloses a high-precision control valve, the left end of the water inlet chamber 2 is provided with a water inlet flange 20, and the right end of the water drainage chamber 3 is provided with a water drainage flange 21; through the arrangement, the valve body 1 and other connecting structures are conveniently connected with the external pipeline in a sealing manner, and convenience is improved.

The utility model discloses a high accuracy control valve, still include second sealing washer 22, the rotatable cover of second sealing washer 22 is established on valve rod 10, and second sealing washer 22 is fixed to be inlayed and is established in the bottom of valve top 5; through the setting, the sealing performance of the equipment is improved, and the practicability is improved.

The utility model discloses a high-precision control valve, the front end of the valve body 1 is provided with a flow direction indicator 23; through setting up flow direction indicator 23, the staff of being convenient for masters connection structure's such as valve body 1 installation direction fast, improves the convenience.

The utility model relates to a high-precision control valve, the top end of a hand wheel 12 is provided with a vertical handle; through the arrangement, the handwheel 12 can be rotated by workers at multiple angles, and convenience is improved.

The utility model discloses a high accuracy control valve, it at the during operation, at first revolves wrong hand wheel 12, makes valve rod 10 drive case 6 rotatory, under the linkage effect of internal thread 8 and external screw thread 9, adjusts the relative position of case 6 and intercommunication seat 4 to the adjustment can with the quantity of the wash port 7 of 3 intercommunications of drainage cavity, thereby adjust the cavity 2 and the 3 intercommunication areas of drainage cavity of intaking, reach high accuracy control flow's effect can.

The utility model discloses a high accuracy control valve, its mounting means, connected mode or mode of setting are common mechanical system, as long as can reach all can implement of its beneficial effect.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims

1. The high-precision control valve is characterized by comprising a valve body (1), a communication base (4), a valve top (5), a valve core (6), a valve rod (10), a hand wheel (12) and a pre-tightening device, wherein a water inlet cavity (2) is arranged at the left end of the valve body (1), a water drainage cavity (3) is arranged at the right end of the valve body (1), a communication hole is formed between the water inlet cavity (2) and the water drainage cavity (3), an upper opening communicated with the water drainage cavity (3) is formed in the top end of the valve body (1), the communication base (4) is hermetically installed at the communication hole, a mounting hole communicated with the water drainage cavity (3) and the water inlet cavity (2) is formed in the top end of the communication base (4), an internal thread (8) is arranged in the mounting hole of the communication base (4), the valve top (5) is hermetically installed at the upper opening at the top end of the valve body (1), a cavity is arranged inside the valve core (6), and a plurality of groups of drain holes (7) communicated with the cavity of the valve core (6) are formed in the circumferential outer wall of the valve core (6) The utility model discloses a valve rod, be provided with on the circumference outer wall of case (6) external screw thread (9), external screw thread (9) spiral shell dress inserts in the mounting hole of intercommunication seat (4), the bottom of case (6) is provided with the lower shed that communicates into water cavity (2) and case (6) cavity, the sealed rotatable inside that stretches into to drainage cavity (3) of valve top (5) of passing in the bottom of valve rod (10), and the bottom of valve rod (10) and the top fixed connection of case (6), a preloading device for reducing between internal thread (8) and external screw thread (9) connecting gap installs inside valve top (5), be provided with velocity of flow scale mark (11) on the circumference outer wall of valve rod (10), hand wheel (12) fixed mounting is on the top of valve rod (10).

2. A high-precision control valve according to claim 1, wherein the pre-tightening device further comprises a check ring (14), a spring (15) and an annular cover plate (16), the top end of the valve top (5) is provided with a mounting cavity (13), the check ring (14) is fixedly sleeved on the outer circumferential wall of the valve rod (10), the check ring (14) is located inside the mounting cavity (13), the spring (15) is sleeved on the valve rod (10), the bottom end of the spring (15) is fixedly connected with the check ring (14), the annular cover plate (16) is slidably sleeved on the valve rod (10), the annular cover plate (16) is fixedly mounted at the top end of the valve top (5), the bottom end of the annular cover plate (16) is provided with a first sealing ring (17), the first sealing ring (17) is hermetically embedded on the valve top (5), and the top end of the spring (15) is fixedly connected with the first sealing ring (17).

3. A high precision control valve according to claim 2, characterized by further comprising a fixing ring (18) and a plurality of sets of bolts (19), wherein the fixing ring (18) is fixedly sleeved on the top of the circumferential outer wall of the valve top (5), and the fixing ring (18) is fixedly installed on the top end of the valve body (1) by means of the plurality of sets of bolts (19).

4. A high accuracy control valve according to claim 3, characterized in that the left end of the inlet chamber (2) is provided with an inlet flange (20) and the right end of the outlet chamber (3) is provided with an outlet flange (21).

5. A high precision control valve according to claim 4, characterized in that it further comprises a second sealing ring (22), the second sealing ring (22) is rotatably sleeved on the valve rod (10), and the second sealing ring (22) is fixedly embedded at the bottom end of the valve top (5).

6. A high accuracy control valve according to claim 5, characterized in that the front end of the valve body (1) is provided with a flow direction indicator (23).

7. A high accuracy control valve as defined in claim 6, characterized in that the top end of the hand wheel (12) is provided with a vertical grip.