CN213745167U

CN213745167U - Pneumatic needle valve actuator

Info

Publication number: CN213745167U
Application number: CN202022602056.8U
Authority: CN
Inventors: 李元锋; 潘志伟
Original assignee: Tianjin Weiken Technology Development Co ltd
Current assignee: Tianjin Weiken Technology Development Co ltd
Priority date: 2020-11-12
Filing date: 2020-11-12
Publication date: 2021-07-20
Anticipated expiration: 2030-11-12

Abstract

The utility model discloses a pneumatic needle valve executor, including cylinder body and valve body, cylinder body inner chamber bottom is provided with the piston, piston swing joint is on the cylinder body inner wall, the cylinder body top is provided with the cylinder cap, the relative both sides of cylinder cap inner wall are connected with compression spring respectively, the inner wall is connected to the compression spring other end in cylinder body bottom, the cylinder body top middle side is provided with the regulating spindle, regulating spindle bottom swing joint has last valve rod, it runs through the cylinder body top and extends to the cylinder body bottom to go up the valve rod. The utility model discloses the cylinder cap is installed at the cylinder body top, cylinder body internally mounted compression spring, compression spring outer lane and the contact of cylinder body inner wall, compression spring top fixed mounting on the cylinder cap, and the compression spring bottom is installed on the piston surface, makes the piston remove stably, goes up valve stem top and surrounds buffer spring, goes up valve stem mid-mounting packing ring, and the buffer spring bottom is connected on the packing ring, and is more stable when going up the valve stem removal, and sealing performance is firm.

Description

Pneumatic needle valve actuator

Technical Field

The utility model relates to a pneumatic actuator technical field specifically is a pneumatic needle valve executor.

Background

The pneumatic actuator is an actuating device for opening and closing or regulating a valve by air pressure, is also called a pneumatic actuating mechanism or a pneumatic device, but is generally called a pneumatic head, the pneumatic actuator is sometimes provided with a certain auxiliary device, and is commonly used with a valve positioner and a hand wheel mechanism.

However, in the prior art, the structure is single, the sealing performance is poor, and the service life is limited.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a pneumatic needle valve executor to solve the problem that proposes among the above-mentioned background art.

In order to achieve the above object, the utility model provides a following technical scheme: the cylinder comprises a cylinder body and a valve body, wherein a piston is arranged at the bottom of an inner cavity of the cylinder body, the piston is movably connected on the inner wall of the cylinder body, a cylinder cover is arranged at the top of the cylinder body, compression springs are respectively connected at two opposite sides of the inner wall of the cylinder cover, the other end of each compression spring is connected on the inner wall of the bottom of the cylinder body, an adjusting shaft is arranged at the middle side of the top end of the cylinder body, an upper valve rod is movably connected at the bottom of the adjusting shaft, the upper valve rod penetrates through the top of the cylinder body and extends to the bottom of the cylinder body, a gasket is arranged at the middle part of the upper valve rod, a buffer spring is encircled at the upper part of the upper valve rod, one end of the buffer spring is connected at the top of the upper valve rod, the other end of the buffer spring is connected on the upper surface of the gasket, a connecting rod is movably connected at the bottom of the upper valve rod, the other end of the connecting rod is connected with a lower valve rod, sealing filler is arranged at the joint of the bottom of the upper valve rod and the top of the connecting rod, and two sides of the bottom of the cylinder body are connected with a support, the support bottom is connected on valve body top both sides surface, the valve body top is passed at lower valve rod top and is located inside the valve body, the valve rod is located the one end surface of valve body bottom down and is provided with the sense touch multitouch, valve body inner wall both sides are provided with the response pole, the response pole other end contacts with lower valve rod surface, valve body bottom both sides are provided with the swivel nut respectively relatively, swivel nut threaded connection has the nut.

Preferably, the two sides of the cylinder body are provided with screws, the screws penetrate through the cylinder cover and the cylinder body, and the screws are in threaded connection with the cylinder body and the cylinder cover.

Preferably, the number of the compression springs is two, the compression springs are respectively positioned on two sides of the upper valve rod, and one end of each compression spring is connected with the piston.

Preferably, the connecting rod is located inside the piston, and the piston is provided with a sealing ring in surface contact with the connecting rod.

Preferably, one end of the induction rod, which is far away from the valve body, corresponds to the sensing block, and the induction rod is in surface contact with the sensing block.

Preferably, a sealing ring is arranged at the intersection of the top of the lower valve rod and the bottom of the connecting rod.

Compared with the prior art, the beneficial effects of the utility model are that:

1. the cylinder cover is installed at the top of the cylinder body, the compression spring is installed inside the cylinder body, the outer ring of the compression spring is in contact with the inner wall of the cylinder body, the top end of the compression spring is fixedly installed on the cylinder cover, the bottom end of the compression spring is installed on the surface of a piston, the piston is enabled to move stably, the top of an upper valve stem surrounds a buffer spring, a gasket is installed in the middle of the upper valve stem, the bottom of the buffer spring is connected to the gasket, the upper valve stem is more stable when moving, and the sealing performance is stable;

2. the utility model discloses it follows the removal to go back the connecting rod when piston removes simultaneously, and lower valve rod removes along with the connecting rod, is provided with the gland packing between piston and the connecting rod and makes the leakproofness more firm, and the touch piece of installation is corresponding with the response pole on the lower valve rod, and lower valve rod removes, and the response pole removes at the valve body inner wall along with the touch piece.

Drawings

Fig. 1 is an elevation view of the overall structure of a pneumatic needle valve actuator according to the present invention;

fig. 2 is a front view of the structure of the adjusting shaft in fig. 1 of the pneumatic needle valve actuator of the present invention;

fig. 3 is an enlarged view of a structure at a position a in fig. 1 of the pneumatic needle valve actuator of the present invention.

In the figure: 1. a cylinder body; 2. a valve body; 3. a piston; 4. a compression spring; 5. an adjustment shaft; 6. an upper valve stem; 7. a buffer spring; 8. a gasket; 9. sealing and filling; 10. a connecting rod; 11. a lower valve stem; 12. a touch sensing block; 13. an induction rod; 14. a support; 15. a threaded sleeve; 16. a nut; 17. a screw; 18. the cylinder cover.

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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-3, the present invention provides a technical solution: the valve comprises a cylinder body 1 and a valve body 2, wherein a piston 3 is arranged at the bottom of an inner cavity of the cylinder body 1, the piston 3 is movably connected on the inner wall of the cylinder body 1, a cylinder cover 18 is arranged at the top of the cylinder body 1, two opposite sides of the inner wall of the cylinder cover 18 are respectively connected with a compression spring 4, the other end of the compression spring 4 is connected with the inner wall of the bottom of the cylinder body 1, an adjusting shaft 5 is arranged at the middle side of the top end of the cylinder body 1, an upper valve rod 6 is movably connected at the bottom of the adjusting shaft 5, the upper valve rod 6 penetrates through the top of the cylinder body 1 and extends to the bottom of the cylinder body 1, a gasket 8 is arranged in the middle of the upper valve rod 6, a buffer spring 7 is wound on the upper part of the upper valve rod 6, one end of the buffer spring 7 is connected at the top of the upper valve rod 6, the other end of the buffer spring 7 is connected on the upper surface of the gasket 8, a connecting rod 10 is movably connected at the bottom of the upper valve rod 6, the other end of the connecting rod 10 is connected with a lower valve rod 11, a sealing filler 9 is arranged at the joint of the bottom of the upper valve rod 6 and the top of the connecting

rod

10, 1 bottom both sides of cylinder body are connected with support 14, and support 14 bottom is connected in 2 top both sides surfaces of valve body, and lower valve rod 11 top is passed 2 tops of valve body and is located inside 2 of valve body, and lower valve rod 11 is located the one end surface of 2 bottoms of valve body and is provided with

sense touch multitouch

12, and 2 inner wall both sides of valve body are provided with response pole 13, and the response pole 13 other end contacts with lower valve rod 11 surface, and 2 bottom both sides of valve body are provided with swivel nut 15 respectively relatively, and swivel nut 15 threaded connection has nut 16.

Two sides of a cylinder body 1 are provided with screw rods 17, the screw rods 17 penetrate through a cylinder cover 18 and the cylinder body 1, the screw rods 17 are in threaded connection with the cylinder body 1 and the cylinder cover 18, two compression springs 4 are arranged, the compression springs 4 are respectively positioned at two sides of an upper valve rod 6, one end of each compression spring 4 is connected with a piston 3, a connecting rod 10 is positioned inside the piston 3, a sealing ring is arranged on the piston 3 and the connecting rod 10 in a surface contact manner, one end of a sensing rod 13, far away from a valve body 2, corresponds to a sensing block 12, the sensing rod 13 is in surface contact with the sensing block 12, a sealing ring is arranged at the intersection of the top of a lower valve rod 11 and the bottom of the connecting rod 10, the cylinder cover 18 is arranged at the top of the cylinder body 1, the compression spring 4 is arranged inside the cylinder body 1, the outer ring of the compression spring 4 is in contact with the inner wall of the cylinder body 1, the top end of the compression spring 4 is fixedly arranged on the cylinder cover 18, the bottom end of the compression spring 4 is arranged on the surface of the piston 3, so that the piston 3 can move stably, the top of the upper valve rod 6 surrounds a buffer spring 7, go up 6 mid-mounting packing rings 8 of valve rod, 7 bottom connections of buffer spring are on packing rings 8, it is more stable when going up 6 removal of valve rod, sealing performance is firm, connecting rod 10 is followed when piston 3 removes, lower valve rod 11 removes along with connecting rod 10 removes, it makes the leakproofness more firm to be provided with gland packing 9 between piston 3 and the connecting rod 10, the touch piece 12 of installation is corresponding with response pole 13 on lower valve rod 11, lower valve rod 11 removes, response pole 13 removes at 2 inner walls of valve body along with touch piece 12.

The working principle is as follows: when using, cylinder cap 18 is installed at 1 top of cylinder body, 1 internally mounted compression spring 4 of cylinder body, compression spring 4 outer lane and the contact of 1 inner wall of cylinder body, 4 top fixed mounting of compression spring are on cylinder cap 18, install on piston 3 surface compression spring 4 bottom, make piston 3 move stably, go up 6 tops of valve stem and encircle buffer spring 7, go up 6 mid-mounting packing rings 8 of valve stem, buffer spring 7 bottom is connected on packing ring 8, it is more stable when going up valve stem 6 and removing, the utility model discloses connecting rod 10 is followed and is removed when piston 3 removes, lower valve stem 11 removes along with connecting rod 10 removal, it makes the leakproofness more firm to be provided with gland packing 9 between piston 3 and the connecting rod 10, the sense touch piece 12 of installation on lower valve stem 11 is corresponding with sense pole 13, lower valve stem 11 removes, sense touch piece 12 removes at 2 inner walls of valve body along with sense touch piece 13.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

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. The utility model provides a pneumatic needle valve executor, includes cylinder body (1) and valve body (2), its characterized in that: the cylinder body (1) is provided with a piston (3) at the bottom of an inner cavity, the piston (3) is movably connected to the inner wall of the cylinder body (1), a cylinder cover (18) is arranged at the top of the cylinder body (1), compression springs (4) are respectively connected to two opposite sides of the inner wall of the cylinder cover (18), the other end of each compression spring (4) is connected to the inner wall of the bottom of the cylinder body (1), an adjusting shaft (5) is arranged at the middle side of the top end of the cylinder body (1), an upper valve rod (6) is movably connected to the bottom of the adjusting shaft (5), the upper valve rod (6) penetrates through the top of the cylinder body (1) and extends to the bottom of the cylinder body (1), a gasket (8) is arranged in the middle of the upper valve rod (6), a buffer spring (7) is arranged around the upper part of the upper valve rod (6), one end of the buffer spring (7) is connected to the top of the upper valve rod (6), the other end of the buffer spring (7) is connected to the upper surface of the gasket (8), the bottom of the upper valve rod (6) is movably connected with a connecting rod (10), the other end of the connecting rod (10) is connected with a lower valve rod (11), a sealing filler (9) is arranged at the joint of the bottom of the upper valve rod (6) and the top of the connecting rod (10), the two sides of the bottom of the cylinder body (1) are connected with brackets (14), the bottom of each bracket (14) is connected with the surfaces of the two sides of the top of the valve body (2), the top of the lower valve rod (11) passes through the top of the valve body (2) and is positioned in the valve body (2), a sensing contact block (12) is arranged on the surface of one end of the lower valve rod (11) positioned at the bottom of the valve body (2), the two sides of the inner wall of the valve body (2) are provided with induction rods (13), the other end of each induction rod (13) is contacted with the surface of the lower valve rod (11), threaded sleeves (15) are oppositely and respectively arranged on two sides of the bottom of the valve body (2), and nuts (16) are connected to the threaded sleeves (15) in a threaded mode.

2. A pneumatic needle valve actuator as defined in claim 1 wherein: the improved cylinder is characterized in that screw rods (17) are arranged on two sides of the cylinder body (1), the screw rods (17) penetrate through the cylinder cover (18) and the cylinder body (1), and the screw rods (17) are in threaded connection with the cylinder body (1) and the cylinder cover (18).

3. A pneumatic needle valve actuator as defined in claim 1 wherein: the two compression springs (4) are arranged, the compression springs (4) are respectively located on two sides of the upper valve rod (6), and one end of each compression spring (4) is connected with the piston (3).

4. A pneumatic needle valve actuator as defined in claim 1 wherein: the connecting rod (10) is located inside the piston (3), and a sealing ring is arranged on the surface of the piston (3) and the connecting rod (10) in a contact mode.

5. A pneumatic needle valve actuator as defined in claim 1 wherein: one end, far away from the valve body (2), of the sensing rod (13) corresponds to the sensing block (12), and the sensing rod (13) is in contact with the surface of the sensing block (12).

6. A pneumatic needle valve actuator as defined in claim 1 wherein: and a sealing ring is arranged at the intersection of the top of the lower valve rod (11) and the bottom of the connecting rod (10).