CN214699420U

CN214699420U - Small-sized electric valve

Info

Publication number: CN214699420U
Application number: CN202120417521.2U
Authority: CN
Inventors: 罗纲
Original assignee: Jiaxing Yiji Fluid Technology Co ltd
Current assignee: Jiaxing Yiji Fluid Technology Co ltd
Priority date: 2021-02-25
Filing date: 2021-02-25
Publication date: 2021-11-12
Anticipated expiration: 2031-02-25

Abstract

The utility model discloses a miniaturized electric valve, which comprises a main valve body, an electric actuator and a driving assembly, wherein the electric actuator drives the driving assembly to move in the main valve body, the main valve body comprises a front valve body, a middle valve body and a rear valve body which are coaxially arranged and communicated, a valve clack seat is arranged between the rear valve body and the middle valve body, and a valve clack piece is arranged on the valve clack seat; the driving assembly comprises a hollow valve core and a transmission assembly, the hollow valve core is coaxially arranged in the main valve body and is in sliding connection with the main valve body, the transmission assembly comprises a transmission shaft and a transmission ring, the transmission ring is sleeved on the outer side of the hollow valve core, one end of the transmission shaft is connected with the electric actuator, the other end of the transmission shaft penetrates into the main valve body and is matched with the transmission ring, the electric actuator drives the transmission shaft to rotate, the transmission shaft drives the transmission ring to do axial linear motion, and the transmission ring drives the hollow valve core to do axial linear motion so as to form opening and closing matching with the valve clack piece. The utility model discloses reduce overall dimension, can use in less space.

Description

Small-sized electric valve

Technical Field

The utility model relates to the technical field of valves, especially, relate to a miniaturized electric valve.

Background

The electric valve is a valve that is opened and closed by an electric actuator, and is suitable for controlling a medium such as gas, steam, or liquid. The existing electric valves are mainly divided into two types, wherein one type of actuator outputs linear motion, and a valve core of the valve also linearly moves; another type of actuator outputs a rotary motion, as does the valve spool of the valve. A rotary type electric valve having a stator rotary type outer rotor motor, for example, disclosed in patent No. CN108282036A, belongs to the field of motors, and includes a stator rotary type outer rotor motor including a rotor, a rotary shaft, and a stator, the rotor being held stationary, the rotary shaft being connected to the stator, the stator and the rotary shaft rotating together. Conventionally, the stator is a stationary part and the rotor is a rotating part in an electric machine, and in this utility model, the stator is directly connected to the rotating shaft, the stator rotates, and the rotor remains stationary. The pneumatic valve is of a structure type that the actuator outputs rotary motion, and the valve core of the valve is also in rotary motion, so that the conventional pneumatic valve has the problem of large overall dimension, and under certain conditions, the valve is difficult to meet the requirement because no enough space is available for installing the valve.

SUMMERY OF THE UTILITY MODEL

The utility model aims at solving the defects existing in the prior art, and providing a miniaturized electric valve which can be installed in a smaller space and has a compact structure.

In order to achieve the above purpose, the utility model adopts the following technical scheme: a small-sized electric valve comprises a main valve body, an electric actuator and a driving assembly, wherein the electric actuator drives the driving assembly to move in the main valve body, the main valve body comprises a front valve body, a middle valve body and a rear valve body which are coaxially arranged and communicated, a valve clack seat is arranged between the rear valve body and the middle valve body, and a valve clack piece is arranged on the valve clack seat; the driving assembly comprises a hollow valve core and a transmission assembly, the hollow valve core is coaxially arranged in the main valve body and is in sliding connection with the main valve body, the transmission assembly comprises a transmission shaft and a transmission ring, the transmission ring is sleeved on the outer side of the hollow valve core, one end of the transmission shaft is connected with an electric actuator, the other end of the transmission shaft penetrates into the main valve body and is matched with the transmission ring, the electric actuator drives the transmission shaft to rotate, the transmission shaft drives the transmission ring to do axial linear motion, and the transmission ring drives the hollow valve core to do axial linear motion so as to form opening and closing matching with the valve clack piece. By transmission shaft cooperation transmission ring, become the rotary motion of transmission shaft the axial linear motion of transmission ring cooperation hollow valve core to this and the switching cooperation of realization and valve clack spare, reduce overall dimension from this, realize the miniaturization.

In one embodiment, an eccentric shaft is arranged on the end face of the transmission shaft at the end matched with the transmission ring, a V-shaped groove is formed in the outer circular surface of the transmission ring in a surrounding mode, and the eccentric shaft is inserted into the V-shaped groove to form transmission matching. The axial motion of the transmission ring is driven by the motion of the eccentric shaft in the V-shaped groove.

In one embodiment, the transmission assembly further comprises a base and a connecting seat, the base is arranged at the bottom of the electric actuator, one end of the connecting seat is inserted into the base, the other end of the connecting seat is inserted into the middle valve body, and the transmission shaft is inserted into the connecting seat and can rotate in the connecting seat. The base and the connecting seat realize the precise assembly of the transmission shaft.

In one embodiment, the connecting base is provided with a receiving hole axially penetrating through the connecting base, the transmission shaft is inserted into the receiving hole, the connecting base is circumferentially provided with a first limiting groove and a second limiting groove, and a sealing ring is arranged in the second limiting groove. Improve the leakproofness, avoid revealing.

In one embodiment, a through hole is formed in the base in a vertically penetrating manner, an output shaft of the electric actuator extends into the through hole, the output shaft is inserted into the connecting seat and connected with the transmission shaft, locking pieces are detachably arranged on two sides of the base, and the locking pieces are inserted into the first limiting grooves. The connecting seat is fixedly arranged in the base through the locking piece, so that the stability is improved.

In one embodiment, an elastic assembly is arranged on the hollow valve core, the elastic assembly comprises a fixed seat and elastic pieces, the fixed seat is sleeved on the hollow valve core, and the elastic pieces are arranged between the fixed seat and the transmission ring and arranged around the hollow valve core. The elastic member provides elastic force, and the effects of buffering, damping and applying pressure are achieved.

In one embodiment, a limiting ring and a retaining groove are arranged on the side curved surface of the hollow valve core in a surrounding mode, a retaining ring is arranged in the retaining groove and protrudes out of the side curved surface of the hollow valve core, and the transmission ring and the elastic assembly are arranged between the limiting ring and the retaining ring. The limiting ring and the check ring limit the position, so that the buffer device has a smaller movement distance and a buffer effect.

In one embodiment, a guide ring is embedded in each of the front valve body and the middle valve body, and the guide ring is in contact with the side curved surface of the hollow valve core. The guide ring and the hollow valve core are in sliding fit, and friction is reduced.

In one embodiment, the valve flap member is filled and arranged at the center of the valve flap seat, a plurality of medium channels are arranged on the valve flap seat and around the valve flap member, and the medium channels are communicated with the channels in the main valve body to serve as circulation channels of the medium.

In one embodiment, the valve clack member is intersected by a center perpendicular line of a slope of the V-shaped groove on one side facing the rear valve body. The stress effect is ensured, and the port of the hollow valve core can be tightly pressed on the valve clack.

The utility model discloses a transmission shaft, eccentric shaft, transmission ring and elastic component's structure can realize becoming the axial linear motion drive power of transmission ring with the rotatory power conversion of electric actuator's output, has changed two linear motion or two rotary motion's traditional transmission structure in the past, can reduce holistic overall dimension, realizes miniaturized structure, conveniently uses under the less environment of installation space.

Drawings

Fig. 1 is a schematic view of the overall structure of a miniature electric valve according to the present invention;

fig. 2 is a schematic cross-sectional structure diagram of a miniaturized electric valve according to the present invention;

fig. 3 is a schematic diagram of an explosion state structure of a miniaturized electric valve according to the present invention;

fig. 4 is a schematic structural view of a transmission shaft of a miniaturized electric valve according to the present invention in a side direction;

fig. 5 is a schematic structural view of the other side direction of the transmission shaft of the miniature electric valve according to the present invention;

fig. 6 is a schematic structural diagram of a base of a miniaturized electric valve according to the present invention;

fig. 7 is a schematic view of a connection section structure of a transmission shaft and a base connecting seat of a miniaturized electric valve according to the present invention;

fig. 8 is a schematic structural diagram of a hollow valve core of a miniaturized electric valve provided by the present invention;

fig. 9 is a schematic structural view of the transmission ring of the miniature electric valve combined with the elastic member.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

The terms used herein are intended to explain the embodiments and are not intended to limit and/or define the invention, it being understood that the terms "front", "back", "left", "right", and the like, refer to orientations or positional relationships that are based on the orientations or positional relationships illustrated in the drawings, or that are conventionally positioned when the products of the invention are in use, or that are conventionally understood by those skilled in the art, and are used merely to facilitate the description and simplify the description of the invention, rather than to indicate or imply that the referenced devices or components must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the invention.

Hereinafter, a preferred embodiment according to the present invention will be described in detail with reference to fig. 1 to 9.

In this embodiment, the utility model provides a miniaturized electric valve, including the main valve body, electric actuator 100 and drive assembly, electric actuator 100 drives drive assembly and moves in the main valve body, the main valve body is including coaxial setting and the preceding valve body 210 that is linked together, well valve body 220 and back valve body 230, and the three is nested fixed, and the export of medium circulation is regarded as by preceding valve body one end to the entry, by back valve body one end as the medium circulation, electric actuator adopt the conventional accessory in the field can, do not limit herein.

In this embodiment, be provided with valve clack seat 240 between back valve body 230 and well valve body 220, be provided with valve clack piece 250 on the valve clack seat 240, valve clack piece 250 fills (imbeds) and sets up in the center department of valve clack seat 240, on the valve clack seat 240 and surround running through of valve clack piece 250 and be provided with a plurality of medium passageways 241, medium passageways 241 are linked together with the passageway in the main valve body, and valve clack seat 240 wholly is discoid structure, just can imbed in the back valve body to fix the valve clack seat between the two by well valve body and back valve body cooperation, valve clack piece adoption field in conventional material and structure can.

In this embodiment, the driving assembly includes a hollow valve core 300 and a transmission assembly, the hollow valve core 300 is coaxially disposed in the main valve body and slidably connected to the main valve body, the transmission assembly includes a transmission shaft 400 and a transmission ring 500, the transmission ring 500 is sleeved outside the hollow valve core 300, one end of the transmission shaft 400 is connected to the electric actuator 100, the other end of the transmission shaft 400 penetrates into the main valve body and is matched with the transmission ring 500, the electric actuator 100 drives the transmission shaft 400 to rotate, an eccentric shaft 410 is disposed on an end surface of the transmission shaft 400 matched with the transmission ring 500, a V-shaped groove 510 is circumferentially disposed on an outer circumferential surface of the transmission ring 500, the eccentric shaft 410 is inserted into the V-shaped groove 510 to form a transmission fit, the transmission shaft 400 drives the transmission ring 500 to axially linearly move, the transmission ring 500 drives the hollow valve core 300 to axially linearly move to form an open and close fit with the valve flap 250, form the switching cooperation between the terminal surface (can be called the edge of a knife) that cavity case is close to back valve body one end and the case promptly, for example, when electric actuator corotation, drive transmission shaft corotation, the eccentric shaft rotates along with the transmission shaft this moment, drive V type groove backward valve body one side axial motion then until the laminating of the edge of a knife one end of cavity case realizes closing on the valve clack spare, and simultaneously, when electric actuator reversal, drive the transmission shaft reversal, the eccentric shaft rotates along with the transmission shaft this moment, drive V type groove forward valve body one side axial motion then makes the edge of a knife one end of cavity case leave the opening of valve clack spare realization passageway.

Meanwhile, the center perpendicular 10 of the inclined plane of the V-shaped groove 510 facing the rear valve body 230 is intersected with the valve clack piece 250, so that the stress point is in the circle of the hollow valve core, the phenomenon that the knife edge end of the hollow valve core cannot be pressed on the valve clack due to lateral component force is avoided, and the closing effect is ensured.

In this embodiment, the transmission assembly further includes a base 600 and a connection seat 700, the connection seat is generally a cylindrical structure, the base 600 is disposed at the bottom of the electric actuator 100, one end of the connection seat 700 is inserted into the base 600, the other end of the connection seat 700 is inserted into the middle valve body 220 (the top of the middle valve body is correspondingly provided with a through hole for facilitating the insertion of the connection seat), the transmission shaft 400 is inserted into the connection seat 700 and can rotate in the connection seat 700, and a sealing ring 1000 is disposed between the transmission shaft and the connection seat for sealing.

In this embodiment, the connecting base 700 is provided with an accommodating hole 710 axially penetrating therethrough, the transmission shaft 400 is inserted into the accommodating hole 710, the connecting base 700 is provided with a first limiting groove 720 and a second limiting groove 730 around the circumference thereof, and the second limiting groove 730 is provided with a sealing ring 1000 therein.

In this embodiment, the base 600 is provided with through-hole 610 that runs through from top to bottom, electric actuator 100's output shaft extends to in the through-hole 610, the output shaft inserts to set up in connecting seat 700 and is connected with transmission shaft 400, base 600 both sides detachable is provided with retaining member 620, retaining member 620 inserts to set up in first spacing groove 720, the retaining member adopt the bolt structure like can, fix the connecting seat in the base through the retaining member and use.

In this embodiment, an elastic component is disposed on the hollow valve element 300, the elastic component includes a fixed seat 810 and an elastic member 820 (compression spring), the fixed seat 810 is sleeved on the hollow valve element 300, the elastic member 820 is uniformly disposed between the fixed seat 810 and the transmission ring 500 and surrounds the hollow valve element 300, a circle of a plurality of spring mounting holes (not shown in the figure) are circumferentially distributed on one side of the transmission ring, the elastic member is mounted in the spring mounting holes, and the other end of the elastic member is connected with a spring seat.

In this embodiment, the side curved surface of the hollow valve element 300 is surrounded by the limit ring 310 and the stop groove 320, the stop groove 320 is provided with the stop ring 321, the stop ring 321 protrudes out of the side curved surface of the hollow valve element 300, the transmission ring 500 and the elastic component are arranged between the limit ring 310 and the stop ring 321, the transmission ring cannot pass through the limit ring when moving towards one side of the front valve body, the fixing seat cannot pass through the stop ring when moving towards one side of the rear valve body, so that the limiting and certain buffering effects are realized, and when the transmission ring drives the hollow valve element to move towards one side of the rear valve body, the compression spring is fixed on the fixing seat, the fixing seat is pushed by the spring force and fixed on the stop ring, and then the stop ring drives the hollow valve element to compress on the valve clack for sealing.

In this embodiment, the guide rings 201 are embedded in the front valve body 210 and the middle valve body 220, the guide rings 201 contact with the side curved surface of the hollow valve core 300, and the guide rings have a ring-shaped structure with a small friction coefficient, so as to realize sliding fit and reduce friction.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A small-sized electric valve comprises a main valve body, an electric actuator and a driving assembly, wherein the electric actuator drives the driving assembly to move in the main valve body, and the main valve body comprises a front valve body, a middle valve body and a rear valve body which are coaxially arranged and communicated;

the driving assembly comprises a hollow valve core and a transmission assembly, the hollow valve core is coaxially arranged in the main valve body and is in sliding connection with the main valve body, the transmission assembly comprises a transmission shaft and a transmission ring, the transmission ring is sleeved on the outer side of the hollow valve core, one end of the transmission shaft is connected with an electric actuator, the other end of the transmission shaft penetrates into the main valve body and is matched with the transmission ring, the electric actuator drives the transmission shaft to rotate, the transmission shaft drives the transmission ring to do axial linear motion, and the transmission ring drives the hollow valve core to do axial linear motion so as to form opening and closing matching with the valve clack piece.

2. The miniature electric valve according to claim 1, wherein an eccentric shaft is disposed on an end surface of the transmission shaft at a mating end with the transmission ring, a V-shaped groove is circumferentially disposed on an outer circumferential surface of the transmission ring, and the eccentric shaft is inserted into the V-shaped groove to form a transmission fit.

3. The miniature electric valve according to claim 2, wherein said transmission assembly further comprises a base seat and a connecting seat, said base seat is arranged at the bottom of the electric actuator, one end of said connecting seat is inserted and arranged in said base seat, the other end of said connecting seat is inserted and arranged in said middle valve body, said transmission shaft is inserted and arranged in said connecting seat and can rotate in said connecting seat.

4. The miniature electric valve according to claim 3, wherein the connecting seat is axially provided with a receiving hole, the transmission shaft is inserted into the receiving hole, the connecting seat is circumferentially provided with a first limiting groove and a second limiting groove, and the second limiting groove is provided with a sealing ring.

5. The miniature electric valve according to claim 4, wherein the base is provided with a through hole extending vertically therethrough, the output shaft of the electric actuator extends into the through hole, the output shaft is inserted into the connecting seat and connected to the transmission shaft, and locking members are detachably provided on both sides of the base and inserted into the first limiting grooves.

6. The miniature electric valve according to claim 2, wherein the hollow valve core is provided with an elastic component, the elastic component comprises a fixed seat and elastic members, the fixed seat is sleeved on the hollow valve core, and the elastic members are arranged between the fixed seat and the transmission ring and around the hollow valve core.

7. The miniature electric valve according to claim 6, wherein the side curved surface of the hollow valve core is surrounded by a position limiting ring and a retaining groove, the retaining groove is provided with a retaining ring, the retaining ring protrudes out of the side curved surface of the hollow valve core, and the transmission ring and the elastic component are arranged between the position limiting ring and the retaining ring.

8. The miniature electric valve of claim 7, wherein a guide ring is embedded in each of said front and middle valve bodies, said guide ring contacting with the side curved surface of the hollow spool.

9. A miniaturised electrically operated valve according to claim 5 characterised in that the flap member is arranged filled centrally in a valve seat, in which a plurality of medium passages are arranged around the flap member, said medium passages communicating with the passages in the main valve body.

10. A miniature electric valve as set forth in claim 2 wherein a perpendicular center of said V-groove slope toward the side of said rear valve body intersects said flap member.