CN211951484U

CN211951484U - Electric balance gate valve

Info

Publication number: CN211951484U
Application number: CN202020024620.XU
Authority: CN
Inventors: 朱协清; 金焱平; 陶剑英
Original assignee: Wuhan Xiete Valve Technology Co ltd
Current assignee: Wuhan Xiete Valve Technology Co ltd
Priority date: 2020-01-07
Filing date: 2020-01-07
Publication date: 2020-11-17
Anticipated expiration: 2030-01-07

Abstract

The utility model discloses an electrodynamic balance gate valve, which comprises a valve body, a valve seat, a valve cover, a bracket and an electric device, wherein the electric device is connected with a lead screw, and a lead screw nut is sleeved on the lead screw; the end part of the screw rod is provided with a valve shaft, the valve shaft sequentially penetrates through the bracket, the valve cover and the valve body, the lower end part of the valve shaft is sleeved with a cushion block, and the cushion block is in threaded connection with the bottom of the valve body; a valve core is sleeved on the valve shaft corresponding to the valve seat; a valve sleeve is sleeved on one side, close to the valve cover, in the valve body, the outer circumferential surface of the valve core is in sliding fit with the inner circumferential surface of the valve sleeve, and the outer end surface of the lower part of the valve core is matched with the inner end surface of the upper part of the valve seat; the gate valve has the advantages of simple structure and good tightness, and particularly has the advantages of labor saving in operation, convenience in use and popularization value.

Description

Electric balance gate valve

Technical Field

The utility model relates to electric gate valve technical field, concretely relates to electrodynamic balance gate valve.

Background

The electric valve has larger action torque than the common valve, adjustable opening and closing action speed, simple structure and easy maintenance, and can be used for controlling the flow of various types of fluid such as air, water, steam, various corrosive media, slurry, oil products, liquid metal, radioactive media and the like.

The electric actuator cannot be arranged in the valve body cavity, but only can be arranged outside the valve body cavity, and the electric actuator is connected with the valve through the valve rod. In the prior art, the torque required for opening and closing the valve is usually transmitted through the valve rod to transmit the electric actuating mechanism, the setting quality of the valve rod and the transmission part has important influence on the transmission of the torque, the stability and the stability of the gate valve are easily influenced, fluid with certain pressure and temperature is filled in the inner cavity of the valve body, and the liquid is easily leaked out along the gap of the extending part of the valve rod after the stability is poor.

Disclosure of Invention

The utility model aims at providing an electrodynamic balance gate valve to the problem that prior art exists.

In order to achieve the above object, the utility model adopts the following technical scheme:

an electric balance gate valve comprises a valve body, wherein a valve seat is arranged in the valve body, a valve cover is connected to the valve body in a screwed mode, a support is connected to the upper portion of the valve cover in a screwed mode, an electric device is connected to the support in a screwed mode, the output end of the electric device is connected with a lead screw, a lead screw nut is sleeved on the lead screw, and a plurality of bearings are arranged in the upper end of the support and between the lead screw nut and the support; the end part of the screw rod is provided with a valve shaft, the valve shaft sequentially penetrates through the bracket, the valve cover and the valve body, the lower end part of the valve shaft is sleeved with a cushion block, and the cushion block is in threaded connection with the bottom of the valve body; a valve core is sleeved on the valve shaft corresponding to the valve seat, one end of the valve core is abutted against a shaft shoulder of the valve shaft, and the other end of the valve core is fixed through a first nut on the valve shaft;

the valve comprises a valve body, a valve cover, a valve seat, a valve core and a valve seat, wherein the valve cover is sleeved on one side, close to the valve cover, in the valve body, the valve cover is arranged corresponding to the valve seat and forms an axial distance with the valve seat, the outer circumferential surface of the valve core is in sliding fit with the inner circumferential surface of the valve cover, and the outer end surface of the lower portion of the valve core is matched with the inner end surface of the.

According to the electric balance gate valve, the screw rod is controlled by the electric device to move up and down, so that the valve shaft is driven to lift, the valve shaft can lift, the valve core connected to the middle of the valve shaft can slide up and down in the valve sleeve, and the valve is opened or closed. The electric balance gate valve has the advantages of simple structure and good tightness, and particularly, the electric balance gate valve is labor-saving in operation, convenient to use and worthy of popularization.

The screw rod can move up and down due to the arrangement of the screw rod nut, the bearing plays a role in supporting and fixing the screw rod nut, the assembly is easy, and the influence of the transmission efficiency is small.

The valve shaft penetrates through the valve body from top to bottom and can move up and down relative to the valve body, and two ends of the valve shaft move in the holes of the valve body, so that the guidance performance is good, the valve shaft is not easy to deviate, the movement of the valve core is stable and controllable, the valve core is stable to open and close under different liquids and pressures, and the balance is good; and the stability and the non-deflection of the sealing filler and the copper sleeve between the valve shaft and the valve body are also kept.

The shaft shoulder in the middle of the valve shaft and the first nut can effectively fix the valve core, reduce radial runout and offset of the valve core, and are easy to detach and install in the maintenance process.

Furthermore, the outer circumference of the screw rod nut is provided with an annular bulge, and bearings are arranged above and below the annular bulge; the bearing and the screw rod nut are sleeved in an inner counter bore at the upper end of the support, and a second nut is further arranged above the bearing.

The arrangement of the feed screw nut and the upper and lower bearings in the structure avoids the contact and friction between the feed screw nut and the bracket; the second nut can press the bearing and the feed screw nut from above.

Furthermore, a first combined seal is arranged between the valve cover and the valve shaft, a first copper sleeve is arranged on the first combined seal, the first copper sleeve is sleeved on the valve shaft and presses the first combined seal, and the support is connected above the first copper sleeve.

Further, a second combined seal is arranged between the lower part of the valve body and the valve shaft, a second copper sleeve is arranged below the second combined seal, and the second copper sleeve is sleeved on the valve shaft and presses the second combined seal; and the lower end of the second copper sleeve is connected with the cushion block.

The first combined seal and the second combined seal are sealing filler, the first copper sleeve and the second copper sleeve play a role in compressing the sealing filler, the cushion block and the support are good in compressing effect, and the first copper sleeve and the second copper sleeve are all located in the hole, so that the copper sleeve is prevented from being inclined.

Further, the valve gap with valve body complex one side integrated into one piece has the clamping ring, the clamping ring cover is established in the hole of valve body and butt the valve barrel. The valve cover with the pressing ring is beneficial to abutting against the valve sleeve inside on one hand, and radial shaking of the valve cover can be reduced on the other hand.

Further, sealing rings are arranged between the valve cover and the valve body, between the valve sleeve and the valve core, and between the valve seat and the valve body. Make this electrodynamic balance gate valve's sealing performance good.

Furthermore, the two sides of the valve body are provided with a coaxial inlet and outlet, and an inlet channel and an outlet channel which are obliquely arranged; the valve seat is disposed at an upper and lower intersection of the inlet passage and the outlet passage.

Further, the electric device is a motor or an electric actuator.

Furthermore, the upper end part of the support is also provided with an oil nozzle which is communicated to an area between the bearings through an oil duct. Lubricating oil is conveniently added to the bearing and the screw rod nut.

Furthermore, the valve shaft and the screw rod are of an integrated structure, so that the arrangement of connecting parts is reduced, and the transmission efficiency is improved.

Compared with the prior art, the beneficial effects of the utility model are that: 1. the electric balance gate valve controls the valve core to slide up and down in the valve sleeve through the electric device, so that the valve is opened or closed, and the electric balance gate valve has the advantages of simple structure and good tightness, particularly saves labor in operation, is convenient to use and has popularization value; 2. the valve shaft penetrates through the valve body from top to bottom, the end part of the valve shaft moves in the hole of the valve body, the guidance performance is good, the valve shaft is not easy to deviate, the movement of the valve core is stable and controllable, the valve core is stable to open and close under different liquids and pressures, and the balance is good; 3. the use of the sealing ring and the sealing filler ensures that the electric balance gate valve has good sealing performance; and compress tightly effectually, first copper sheathing and second copper sheathing are all located downtheholely, have avoided the crooked of copper sheathing.

Drawings

Fig. 1 is a schematic view of an overall structure of an electrodynamic balance gate valve of the present invention;

in the figure: 1. a valve body; 2. cushion blocks; 3. a second copper sleeve; 4. a second composite seal; 5. a valve shaft; 6. a valve seat; 7. a first nut; 8. a valve core; 9. a valve housing; 10. a copper pad; 11. a valve cover; 12. a support; 13. a screw rod; 14. a bearing; 15. A feed screw nut; 16. a second nut; 17. an electric actuator; 18. a nozzle tip; 19. a first copper bush; 20. a first composite seal; 21. and (5) sealing rings.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are only some embodiments, not all embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "middle", "upper", "lower", "left", "right", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1, an electrodynamic balance gate valve comprises a valve body 1, wherein a valve seat 6 is arranged in the valve body 1, a valve cover 11 is screwed on the valve body 1, a support 12 is screwed above the valve cover 11, an electric actuator 17 is screwed on the support 12, an output end of the electric actuator 17 is connected with a screw rod 13, a screw rod nut 15 is sleeved on the screw rod 13, and the screw rod nut 15 is clamped in the upper end of the support 12 and a plurality of bearings 14 are arranged between the screw rod nut 15 and the support 12; a valve shaft 5 is integrally formed at the end part of the screw rod 13, the valve shaft 5 sequentially penetrates through the bracket 12, the valve cover 11 and the valve body 1, a cushion block 2 is sleeved at the tail end of the lower part of the valve shaft 5, and the cushion block 2 is in threaded connection with the bottom of the valve body 1; a valve core 8 is sleeved on the valve shaft 5 corresponding to the valve seat 6, one end of the valve core 8 abuts against a shaft shoulder of the valve shaft 5 through a copper gasket 10, and the other end of the valve core 8 is fixed through a first nut 7 on the valve shaft 5;

a valve sleeve 9 is sleeved on one side, close to the valve cover 11, in the valve body 1, the valve sleeve 9 is arranged corresponding to the valve seat 6 and forms an axial distance with the valve seat 6, the outer circumferential surface of the valve core 8 is in sliding fit with the inner circumferential surface of the valve sleeve 9, and the outer end surface of the lower portion of the valve core 8 is matched with the inner end surface of the upper portion of the valve seat 6.

According to the electric balance gate valve, the screw rod 13 is controlled by the electric actuator 17 to move up and down, so that the valve shaft 5 is driven to lift, the valve shaft 5 can lift to enable the valve core 8 connected to the middle of the valve shaft to slide up and down in the valve sleeve 9, and the valve is opened or closed. The electric balance gate valve has the advantages of simple structure and good tightness, and particularly, the electric balance gate valve is labor-saving in operation, convenient to use and worthy of popularization.

The screw rod 13 can move up and down due to the arrangement of the screw rod nut 15, the bearing 14 plays a role in supporting and fixing the screw rod nut 15, the assembly is easy, and the influence of the transmission efficiency is small.

The valve shaft 5 penetrates through the valve body 1 from top to bottom and can move up and down relative to the valve body 1, two ends of the valve shaft 5 move in the holes of the valve body 1, the guidance performance is good, the valve shaft 5 is not easy to deviate, so that the movement of the valve core 8 is stable and controllable, the valve core 8 is stable to open and close under different liquids and pressures, and the balance is good; and the stability and the non-deflection of the sealing filler and the copper sleeve between the valve shaft 5 and the valve body 1 are also kept.

The shaft shoulder in the middle of the valve shaft 5 and the first nut 7 can effectively fix the valve core 8, reduce radial run-out and offset of the valve core 8, and are easy to detach and install in the maintenance process.

Further, an annular bulge is formed on the outer circumference of the lead screw nut 15, and bearings 14 are arranged above and below the annular bulge; the bearing 14 and the screw nut 15 are both sleeved in an inner counter bore at the upper end of the bracket 12, and a second nut 16 is further arranged on the bearing 14 above. The second nut 16 is capable of pressing the bearing 14 and the feed screw nut 15 from above.

Further, a first combined seal 20 is arranged between the valve cover 11 and the valve shaft 5, a first copper bush 19 is arranged on the first combined seal 20, the first copper bush 19 is sleeved on the valve shaft 5 and presses the first combined seal 20, and the bracket 12 is connected above the first copper bush 19.

Further, a second combined seal 4 is arranged between the lower part of the valve body 1 and the valve shaft 5, a second copper bush 3 is arranged below the second combined seal 4, and the second copper bush 3 is sleeved on the valve shaft 5 and presses the second combined seal 4; the lower end of the second copper sleeve 3 is connected with the cushion block 2.

The first combined seal 20 and the second combined seal 4 are made of sealing filler, the first copper sleeve 19 and the second copper sleeve 3 play a role in compressing the sealing filler, the compression effect is good under the action of the cushion block 2 and the support 12, and the first copper sleeve 19 and the second copper sleeve 3 are all located in the hole, so that the copper sleeve is prevented from being inclined.

Further, the valve gap 11 with 1 complex one side integrated into one piece of valve body has the clamping ring, the clamping ring cover is established in the hole of valve body 1 and butt valve barrel 9. The valve cover 11 with the pressing ring is beneficial to abutting against the valve sleeve 9 inside, can reduce radial shaking of the valve cover 11, can be pre-connected during assembly, and facilitates installation of screws.

Further, sealing rings 21 are arranged between the valve cover 11 and the valve body 1, between the valve sleeve 9 and the valve core 8, and between the valve seat 6 and the valve body 1. Make this electrodynamic balance gate valve's sealing performance good.

Further, the two sides of the valve body 1 are provided with a coaxial inlet and outlet, and an inlet channel and an outlet channel which are obliquely arranged; the valve seat 6 is arranged at the upper and lower intersection of the inlet and outlet passages.

Further, the upper end of the bracket 12 is also provided with a nozzle 18, and the nozzle 18 is communicated to the area between the bearings 14 through an oil passage. Lubricating oil can be conveniently added to the bearing 14 and the feed screw nut 15.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. An electrodynamic balance gate valve comprises a valve body, wherein a valve seat is arranged in the valve body, a valve cover is screwed on the valve body, a support is screwed above the valve cover, and an electric device is screwed on the support; the end part of the screw rod is provided with a valve shaft, the valve shaft sequentially penetrates through the bracket, the valve cover and the valve body, the lower end part of the valve shaft is sleeved with a cushion block, and the cushion block is in threaded connection with the bottom of the valve body; a valve core is sleeved on the valve shaft corresponding to the valve seat, one end of the valve core is abutted against a shaft shoulder of the valve shaft, and the other end of the valve core is fixed through a first nut on the valve shaft;

2. The electrodynamic balance gate valve of claim 1, wherein the feed screw nut has an annular protrusion formed on an outer circumference thereof, and bearings are disposed above and below the annular protrusion; the bearing and the screw rod nut are sleeved in an inner counter bore at the upper end of the support, and a second nut is further arranged above the bearing.

3. The electrodynamic balance gate valve of claim 1, wherein a first combined seal is disposed between the valve cover and the valve shaft, a first copper bush is disposed on the first combined seal, the first copper bush is sleeved on the valve shaft and presses the first combined seal, and the bracket is connected above the first copper bush.

4. The electrodynamic balance gate valve of claim 1, wherein a second combined seal is disposed between a lower portion of the valve body and the valve shaft, a second copper bush is disposed below the second combined seal, and the second copper bush is sleeved on the valve shaft and presses the second combined seal; and the lower end of the second copper sleeve is connected with the cushion block.

5. The electrodynamic balance gate valve of claim 1, wherein the valve cover and the valve body one side that cooperates are formed with a clamping ring in an integrated manner, the clamping ring is arranged in the inner hole of the valve body in a sleeved manner and abuts against the valve sleeve.

6. The electrodynamic balance gate valve of claim 1, wherein sealing rings are disposed between the valve cover and the valve body, between the valve sleeve and the valve core, and between the valve seat and the valve body.

7. The electrodynamic balance gate valve of claim 1, wherein the valve body is provided with coaxial inlet and outlet ports on both sides, and an obliquely arranged inlet channel and outlet channel; the valve seat is disposed at an upper and lower intersection of the inlet passage and the outlet passage.

8. The electrodynamic balance gate valve of claim 1, wherein the electric device is a motor or an electric actuator.

9. The electrodynamic balance gate valve of claim 1, wherein the upper end of the carrier is further provided with a nipple that communicates through an oil gallery to an area between the plurality of bearings.

10. The electrodynamic balance gate valve of claim 1, wherein the valve shaft and the lead screw are of a unitary construction.