CN215721134U

CN215721134U - Worm drive motor valve

Info

Publication number: CN215721134U
Application number: CN202122018643.7U
Authority: CN
Inventors: 曹馨月
Original assignee: Chengdu Tongguanxin Technology Co ltd
Current assignee: Chengdu Tongguanxin Technology Co ltd
Priority date: 2021-08-25
Filing date: 2021-08-25
Publication date: 2022-02-01
Anticipated expiration: 2031-08-25

Abstract

The utility model relates to the technical field of motor valves, and provides a worm transmission motor valve which is simple to assemble, comprising a valve body, a valve rod and a motor; the valve rod is arranged in the valve body in a sliding mode along the axial direction of the valve rod, and one end of the valve rod penetrates through the valve body and extends to the outside of the valve body; the motor is arranged in the valve body; a turbine which is sleeved on the valve rod and is in threaded fit with the valve rod is arranged in the valve body; the two sides of the turbine along the axial direction are respectively provided with a first limiting piece fixed in the valve body; a rotation stopping device is arranged between the valve rod and the valve body; a worm which rotates around the axis of the worm and is meshed with the turbine is further arranged in the valve body; the motor is in transmission connection with the worm. Compared with the prior art, the utility model only needs to arrange the worm and the worm wheel between the motor and the valve rod, thereby greatly reducing the number of transmission parts between the motor and the valve rod, not only reducing the volume of the motor valve, but also ensuring that the motor valve is simple to assemble and has lower cost.

Description

Worm drive motor valve

Technical Field

The utility model relates to the technical field of motor valves, in particular to a worm transmission motor valve.

Background

In the patent application with the publication number of CN212297608U, a flow channel opening and closing control device is disclosed, which comprises a valve body and a valve rod, wherein the valve body is installed in the valve body in a sliding manner along the axial direction of the valve body, and one end of the valve rod penetrates through a round hole on the valve body and extends to the outside of the valve body; a sealing device is arranged on the valve body at the position where the valve rod penetrates through; a deflector rod mechanism for driving the valve rod to open and an elastic reset piece for driving the valve rod to close are also arranged in the valve body; the driving lever mechanism comprises a motor, a gear reduction mechanism, a first rotating shaft, a driving lever and a driving surface; the first rotating shaft is rotatably arranged in the valve body, and the deflector rod is arranged on one side of the first rotating shaft and connected with the first rotating shaft; the driving surface is arranged on the valve rod and is vertical to the axis of the valve rod; in the process of opening the valve rod, the deflector rod is abutted against the driving surface; the motor is in transmission connection with the first rotating shaft through a gear reduction mechanism so as to drive the first rotating shaft to rotate around the axis of the first rotating shaft.

The runner opening and closing control device is a motor valve for controlling the opening and closing of the gas meter, but the number of transmission parts arranged between the motor and the valve rod in the valve body of the motor valve is large, so that the whole motor valve is complex to assemble, high in assembly difficulty and high in manufacturing cost.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a worm transmission motor valve which is simple to assemble.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the worm transmission motor valve comprises a valve body, a valve rod and a motor; the valve rod is arranged in the valve body in a sliding mode along the axial direction of the valve rod, and one end of the valve rod penetrates through the valve body and extends to the outside of the valve body; the motor is arranged in the valve body; a turbine which is sleeved on the valve rod and is in threaded fit with the valve rod is arranged in the valve body; the two sides of the turbine along the axial direction are respectively provided with a first limiting piece fixed in the valve body; a rotation stopping device is arranged between the valve rod and the valve body; a worm which rotates around the axis of the worm and is meshed with the turbine is further arranged in the valve body; the motor is in transmission connection with the worm.

Furthermore, a guide hole for the valve rod to pass through and guide is formed in the position, right opposite to the valve rod, of the first limiting part.

Furthermore, a mounting shaft which is perpendicular to the axis of the valve rod is arranged in the valve body; one end of the mounting shaft is fixedly connected with the valve body, and the other end of the mounting shaft is detachably connected with a second limiting piece; the worm is of a hollow structure; the worm is sleeved on the mounting shaft and can rotate relative to the mounting shaft.

Further, the second limiting member is a screw.

Furthermore, the rotation stopping device comprises a rotation stopping rod arranged in parallel with the valve rod and a rotation stopping groove arranged on the valve body; one end of the rotation stopping rod is in sliding fit with the rotation stopping groove, and the rotation stopping rod can move in the rotation stopping groove along the axial direction of the rotation stopping rod; the other end of the rotation stopping rod is fixedly connected with the valve rod.

Further, an output shaft of the motor is coaxially arranged with the worm; the output shaft is fixed with a driving shifting block; and a driven shifting block which is in contact fit with the driving shifting block is fixed on the worm.

Furthermore, the driving shifting block is fixedly connected with an output shaft of the motor through a shaft sleeve.

Furthermore, the worm and the driven shifting block are of an integrally formed structure.

The utility model has the beneficial effects that: according to the worm transmission motor valve provided by the embodiment of the utility model, the worm and the worm wheel are used for speed reduction transmission to replace the existing gear speed reduction mechanism, and the worm wheel is in threaded fit with the valve rod, so that when the motor rotates forwards or backwards, the valve rod can be controlled to reciprocate along the axial direction of the valve rod, and the purpose of controlling the opening and closing of the gas meter is achieved. Compared with the prior art, the utility model only needs to arrange the worm and the worm wheel between the motor and the valve rod, thereby greatly reducing the number of transmission parts between the motor and the valve rod, not only reducing the volume of the motor valve, but also ensuring that the motor valve is simple to assemble and has lower cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below; it is obvious that the drawings in the following description are only some embodiments described in the present invention, and that other drawings can be obtained from these drawings by a person skilled in the art without inventive effort.

FIG. 1 is a schematic structural diagram of a worm drive motor valve provided in an embodiment of the present invention;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

fig. 3 is a sectional view taken along line B-B in fig. 2.

The reference numbers in the figures are: 101-valve body, 102-valve rod, 103-motor, 104-turbine, 105-first limiting piece, 106-worm, 107-guide hole, 108-installation shaft, 109-second limiting piece, 110-rotation stop rod, 111-rotation stop groove, 112-output shaft, 113-driving shifting block, 114-driven shifting block, 115-shaft sleeve, 116-valve seal assembly, 117-sealing device and 118-valve port seat.

Detailed Description

In order that those skilled in the art will better understand the present invention, the following further description is provided in conjunction with the accompanying drawings and examples. It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. The embodiments and features of the embodiments of the present invention may be combined with each other without conflict.

Referring to fig. 1 to 3, a worm drive motor valve provided by an embodiment of the present invention includes a valve body 101, a valve rod 102, and a motor 103; the valve rod 102 is slidably mounted in the valve body 101 along the axial direction thereof, and one end of the valve rod 102 penetrates through the valve body 101 and extends to the outside of the valve body 101; the motor 103 is arranged in the valve body 101; a turbine 104 which is sleeved on the valve rod 102 and is in threaded fit with the valve rod 102 is arranged in the valve body 101; the turbine 104 is respectively provided with a first limiting piece 105 fixed in the valve body 101 along two axial sides thereof; a rotation stopping device is arranged between the valve rod 102 and the valve body 101; a worm 106 which rotates around the axis of the valve body 101 and is meshed with the turbine 104 is further arranged in the valve body 101; the motor 103 is in transmission connection with a worm 106.

Referring to fig. 1 to 3, the valve body 101 has a mounting chamber therein; preferably, the valve body 101 comprises a first housing and a second housing, the first housing and the second housing are detachably connected, and a chamber enclosed by the first housing and the second housing forms a mounting chamber of the valve body 101. One side of the valve body 101 is provided with a valve port seat 118, and the valve port seat 118 has an air intake or exhaust passage therein.

The valve rod 102 is disposed in the mounting chamber of the valve body 101 and can reciprocate along its axis, and one end of the valve rod 102 extends to the outside of the valve body 101 after passing through the through hole on the valve body 101. The end of the valve stem 102 outside the valve body 101 is provided with a valve seal assembly 116, and when the valve stem 102 reciprocates along the axial direction thereof, the valve seal assembly 116 is driven to reciprocate along the axial direction of the valve stem 102, so that the valve seal assembly 116 opens or closes an air inlet or exhaust passage on the valve port seat 118. The valve seal assembly 116 may adopt a structure named as a flow passage opening and closing control device under the license publication number CN213393559U, and of course, the valve seal assembly 116 may also adopt other structures, which are not specifically limited herein.

In order to prevent the medium in the intake or exhaust channel of the valve seat 118 from entering the inner cavity of the valve body 101, a sealing device 117 is preferably arranged between the valve stem 102 and the valve body 101. The sealing device 117 may be a sealing ring disposed between the through hole of the valve body 101 and the valve stem 102, or may have other structures, which are not limited in detail herein. For example, the sealing device 117 may adopt a structure of an authorized bulletin number CN213393559U, which is named as a flow passage opening and closing control device.

The turbine 104 is sleeved on the valve stem 102 and is in threaded fit with the valve stem 102; specifically, the turbine 104 has a coaxially disposed mounting hole, an inner surface of the mounting hole is provided with an internal thread, and an outer surface of the valve stem 102 is provided with an external thread matching with the internal thread. By screwing the turbine 104 and the valve stem 102, the turbine 104 and the valve stem 102 form a lead screw adjusting mechanism to convert the rotary motion of the turbine 104 into the linear motion of the valve stem 102.

The first limiting members 105 are fixed in the valve body 101 and are respectively arranged on two sides of the turbine 104 along the axial direction thereof; the first stopper 105 is used to limit the axial direction of the turbine 104, so as to prevent the turbine 104 from being displaced in the axial direction during rotation. The shape and size of the first retaining member 105 are not particularly limited, as long as the axial direction of the turbine 104 can be retained without affecting the reciprocating motion of the valve stem 102.

Preferably, referring to fig. 3, a guide hole 107 for guiding the valve rod 102 is provided on the first limiting member 105 at a position facing the valve rod 102, and the valve rod 102 passes through the guide hole 107. In this way, the first limiting member 105 not only can axially limit the turbine 104, but also can guide the valve stem 102, thereby improving the stability and reliability of the valve stem 102 moving along the axial direction thereof.

The rotation stopping device is arranged between the valve rod 102 and the valve body 101, and plays a role of rotation stopping and is used for preventing the valve rod 102 from rotating around the axis of the valve rod 102. For example, the rotation stopping device may be a rotation stopping sleeve that is sleeved on the valve rod 102 and is fixedly connected with the valve body 101, a cross section of an inner hole of the rotation stopping sleeve is square, the valve rod 102 has a rotation stopping section that is matched with the rotation stopping sleeve, and a cross section of the rotation stopping section is square.

Preferably, referring to fig. 2, the rotation stopping device includes a rotation stopping rod 110 disposed parallel to the valve stem 102, a rotation stopping groove 111 disposed on the valve body 101; one end of the rotation stopping rod 110 is in sliding fit with the rotation stopping groove 111, and the rotation stopping rod 110 can move in the rotation stopping groove 111 along the axial direction thereof; the other end of the rotation stop rod 110 is fixedly connected with the valve rod 102. The rotation of the valve stem 102 along its own axis is prevented by the engagement of the rotation stop lever 110 with the rotation stop groove 111, thereby ensuring that the valve stem 102 can reciprocate only along its own axis.

The worm 106 is rotatably installed in the valve body 101, so that the worm 106 can rotate around the axis thereof, the worm 106 is also meshed with the worm wheel 104, and the worm 106 rotates to drive the worm wheel 104 to rotate. Referring to fig. 2, the valve body 101 has a mounting shaft 108 disposed perpendicular to the axis of the valve stem 102 therein; one end of the mounting shaft 108 is fixedly connected with the valve body 101, and the other end is detachably connected with a second limiting piece 109; the worm 106 is of a hollow structure; the worm 106 is disposed on the mounting shaft 108 and can rotate relative to the mounting shaft 108. The second limiting member 109 serves as a limiting member for preventing the worm 106 from being separated from the mounting shaft 108. The connection between the second limiting member 109 and the mounting shaft 108 may be a snap connection or a threaded connection. Preferably, the second limiting member 109 is a screw.

The motor 103 is installed in the inner cavity of the valve body 101 and is in transmission connection with the worm 106 for driving the worm 106 to rotate around the axis thereof. The transmission mode between the output shaft 112 of the motor 103 and the worm 106 can be gear transmission or direct connection transmission. Preferably, referring to fig. 2, the output shaft 112 of the motor 103 is coaxially arranged with the worm 106; a driving shifting block 113 is fixed on the output shaft 112; a driven shifting block 114 which is used for contacting and matching with the driving shifting block 113 is fixed on the worm 106. When the worm-gear type driving device works, the output shaft 112 of the motor 103 drives the driving shifting block 113 to rotate around the axis of the output shaft 112, so that certain initial power is ensured to be provided for the driving shifting block 113 when the driving shifting block 113 is in contact with the driven shifting block 114, and after the driving shifting block 113 is in contact with the driven shifting block 114, the driving shifting block 113 drives the driven shifting block 114 and the worm 106 to rotate around the axis of the worm 106.

Further, the driving shifting block 113 is fixedly connected with the output shaft 112 of the motor 103 through a shaft sleeve 115. The shaft sleeve 115 is fixed on the output shaft 112 of the motor 103 through interference fit or a key groove structure, and the driving shifting block 113 is fixed on the outer circumferential surface of the shaft sleeve 115. The worm 106 and the driven shifting block 114 are integrally formed.

The worm drive motor valve provided by the embodiment of the utility model mainly improves a transmission part between the motor 103 and the valve rod 102. Referring to fig. 1 to 3, the operation principle of the worm drive motor valve provided by the embodiment of the present invention is as follows: the motor 103 rotates forwards or reversely, the worm 106 is driven by the motor 103 to rotate, the worm 106 drives the worm wheel 104 meshed with the worm 106 to rotate, the worm wheel 104 drives the valve rod 102 in threaded fit with the worm wheel 104 to reciprocate along the axial direction of the valve rod 102 under the action of a rotation stopping device, and then an air inlet channel on the valve port seat 118 is opened or closed through a valve seal assembly 116 fixed at the end part of the valve rod 102.

According to the worm transmission motor valve provided by the embodiment of the utility model, the worm 106 and the worm wheel 104 are used for speed reduction transmission to replace the existing gear speed reduction mechanism, and the worm wheel 104 is in threaded fit with the valve rod 102, so that when the motor 103 rotates forwards or backwards, the valve rod 102 can be controlled to reciprocate along the axial direction of the valve rod, and the purpose of opening and closing the gas meter is achieved. Compared with the prior art, the worm 106 and the worm wheel 104 are only needed to be arranged between the motor 103 and the valve rod 102, so that the number of transmission parts between the motor 103 and the valve rod 102 is greatly reduced, the size of the motor valve is reduced, and the motor valve is simple to assemble and low in cost.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. The worm transmission motor valve comprises a valve body (101), a valve rod (102) and a motor (103); the valve rod (102) is installed in the valve body (101) in a sliding mode along the axial direction of the valve rod, and one end of the valve rod (102) penetrates through the valve body (101) and extends to the outside of the valve body (101); the motor (103) is arranged in the valve body (101);

the valve is characterized in that a turbine (104) which is sleeved on the valve rod (102) and is in threaded fit with the valve rod (102) is arranged in the valve body (101); the two sides of the turbine (104) along the axial direction are respectively provided with a first limiting piece (105) fixed in the valve body (101); a rotation stopping device is arranged between the valve rod (102) and the valve body (101); a worm (106) which rotates around the axis of the valve body (101) and is meshed with the turbine (104) is further arranged in the valve body (101); the motor (103) is in transmission connection with the worm (106).

2. The worm-drive motor valve as claimed in claim 1, characterized in that a guide hole (107) through which the valve stem (102) passes and which guides the valve stem (102) is provided on the first limiting member (105) at a position facing the valve stem (102).

3. The worm drive motor valve as recited in claim 1, characterized in that the valve body (101) has a mounting shaft (108) disposed perpendicular to an axis of the valve stem (102) therein; one end of the mounting shaft (108) is fixedly connected with the valve body (101), and the other end of the mounting shaft is detachably connected with a second limiting piece (109); the worm (106) is of a hollow structure; the worm (106) is sleeved on the mounting shaft (108) and can rotate relative to the mounting shaft (108).

4. The worm drive motor valve as claimed in claim 3, characterized in that the second stop member (109) is a screw.

5. The worm drive motor valve as claimed in claim 1, characterized in that the rotation stop means comprises a rotation stop lever (110) arranged parallel to the valve stem (102), a rotation stop groove (111) arranged on the valve body (101); one end of the rotation stopping rod (110) is in sliding fit with the rotation stopping groove (111), and the rotation stopping rod (110) can move in the rotation stopping groove (111) along the axial direction of the rotation stopping rod; the other end of the rotation stopping rod (110) is fixedly connected with the valve rod (102).

6. The worm drive motor valve as claimed in claim 1, characterized in that the output shaft (112) of the motor (103) is arranged coaxially with the worm (106); an active shifting block (113) is fixed on the output shaft (112); and a driven shifting block (114) which is in contact fit with the driving shifting block (113) is fixed on the worm (106).

7. The worm drive motor valve as claimed in claim 6, characterized in that the driving dog (113) is fixedly connected with the output shaft (112) of the motor (103) by means of a bushing (115).

8. The worm-drive motor valve as claimed in claim 6, characterized in that the worm (106) is of integral construction with the follower finger (114).