CN218208035U

CN218208035U - Manual-automatic's pneumatic control valve

Info

Publication number: CN218208035U
Application number: CN202222194696.9U
Authority: CN
Inventors: 张荣荣; 赵强; 李纪红
Original assignee: Shanghai Pumason Industrial Control System Co ltd
Current assignee: Shanghai Pumason Industrial Control System Co ltd
Priority date: 2022-08-20
Filing date: 2022-08-20
Publication date: 2023-01-03
Anticipated expiration: 2032-08-20

Abstract

The utility model discloses a manual-automatic integrated pneumatic control valve, pneumatic control valve includes valve body, valve rod and pneumatic actuator, pneumatic actuator passes through the valve rod and is connected with the valve body, be equipped with the case in the valve body and connect the front end at the valve rod, pneumatic actuator includes hollow casing, divide into upper chamber and lower chamber in the casing through a baffle, the baffle middle part is equipped with the piston chamber and cup joints the end of valve rod, the end of valve rod is equipped with the piston structure with piston chamber complex, is equipped with air compressor machine, step motor and control circuit board in the lower chamber, and casing one side outer wall is equipped with the hand wheel, be connected with a pivot that runs through the casing activity and set up in lower chamber on the hand wheel, be equipped with respectively with pivot and step motor complex transmission assembly on the valve rod, be equipped with compressed air inlet and outlet on the baffle, compressed air inlet and outlet passes through pipeline and air compressor machine intercommunication; through the cooperation structure of step motor, hand wheel and valve rod, can manual operation.

Description

Manual-automatic's pneumatic control valve

Technical Field

The utility model relates to a pneumatic valve technical field especially relates to a manual-automatic's pneumatic control valve.

Background

The pneumatic regulating valve is one of industrial process control instruments widely used by petroleum, chemical, electric and metallurgical industries, and is used for regulating the flow of fluid by controlling the movement of a valve core by a pneumatic actuating mechanism. As shown in fig. 1, the existing pneumatic control valve includes a valve body 1, a left inlet and outlet 2 and a right inlet and outlet 3 are arranged on the valve body 1, the left inlet and outlet and the right inlet and outlet are arc-shaped channels, a valve seat 4 is arranged at the communication position of the inner ends of the left inlet and outlet and the right inlet and outlet, a lower bracket 5 is fixed at the upper end of the valve body, a valve rod 6 is arranged in the lower bracket of the valve body, the lower end of the valve rod is connected with a valve core 7 capable of blocking the valve seat, the upper end of the lower bracket is connected with an upper bracket 8, the top end of the upper bracket is provided with an upper shell 9 and a lower shell, a pneumatic film 10 is connected between the upper and lower shells, a lifting support plate 11 is arranged on the lower surface of the pneumatic film, the lifting support plate is connected with a spring 12, and the upper and lower shells are connected with an exhaust port 13; wherein the valve seat 4 is matched with the valve core 7 for blocking and flow control. There are problems that the drive is performed purely automatically by a pneumatic actuator, there is no possibility of manual operation, and the operation is performed by a pneumatic membrane, which is relatively fragile and short in service life.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned not enough that exists at present, the utility model provides a manual-automatic's pneumatic control valve through the cooperation structure of step motor, hand wheel and valve rod, provides manually operation's mode.

In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:

the utility model provides a manual-automatic's pneumatic control valve, pneumatic control valve includes valve body, valve rod and pneumatic actuator, pneumatic actuator passes through the valve rod and is connected with the valve body, be equipped with the case in the valve body and connect the front end at the valve rod, pneumatic actuator includes hollow casing, divide into last cavity and lower cavity through a baffle in the casing, the baffle middle part is equipped with the piston chamber cup joint the end of valve rod, the end of valve rod be equipped with piston chamber complex piston structure, internal air compressor machine, step motor and the control circuit board of being equipped with of lower cavity, casing one side outer wall is equipped with the hand wheel, be connected with a pivot that runs through the casing activity and set up in cavity down on the hand wheel, control circuit board is connected with step motor, air compressor machine respectively and control step motor and air compressor machine work, be equipped with respectively on the valve rod with pivot and step motor complex drive assembly, be equipped with compressed air inlet and outlet on the baffle, compressed air inlet and outlet passes through pipeline and air compressor machine intercommunication.

According to an aspect of the present invention, the bottom of the housing is fixed to the valve body by a bracket.

According to an aspect of the utility model, the support includes by many support columns around the well grafting portion that the valve rod set up, well grafting portion upper end is equipped with grafting portion, grafting portion with casing bottom fixed connection, well grafting portion lower extreme be equipped with down-joint portion with valve body fixed connection, the valve rod runs through grafting portion, well grafting portion and lower joint portion activity set up.

According to the utility model discloses an aspect, by be equipped with the pointer on the valve rod that well connecing portion to encircle, be equipped with on the well connecing portion with pointer complex sign.

According to an aspect of the utility model, be equipped with display panel on the casing outer wall, display panel with control circuit board connects.

According to the utility model discloses an aspect, be equipped with temperature sensor in the cavity of resorption, temperature sensor is connected with control circuit board.

According to the utility model discloses an aspect, be equipped with communication device and host computer communication on the control circuit board.

According to the utility model discloses an aspect, transmission assembly sets up the first rack and the second rack in the valve rod both sides including dividing, be equipped with first gear on step motor's the output shaft, first gear makes the first gear of step motor drive can drive the valve rod and carry out the up-and-down motion with first rack toothing, the pivot end is equipped with the second gear, the second gear makes the hand wheel drive second gear can drive the valve rod and carry out the up-and-down motion with the second rack toothing, the casing passes through fixed connector and valve body fixed connection.

According to the utility model discloses an aspect, cavity's upper wall and lower wall under the internal bushing of being equipped with of cavity down, the cover pipe box is established on the valve rod, the sheathed tube both sides are equipped with the opening respectively, first rack and second rack set up towards an opening respectively.

According to the utility model discloses an aspect, be equipped with seal structure between valve rod and valve body.

According to an aspect of the utility model, be equipped with the snuffle valve on the casing, the snuffle valve with go up the cavity intercommunication.

The utility model discloses the advantage of implementing: the shell is divided into an upper cavity and a lower cavity by the partition plate, the upper cavity adopts a sealing structure, the middle piston cavity serves as a cylinder body of the air cylinder, the air compressor serves as power to provide compressed air, the tail end of the valve rod serves as a piston rod, and the air cylinder acts as an air cylinder; through valve rod and hand wheel pivot cooperation, can be through manual operation valve rod, the manual operation in-process, need be equipped with the snuffle valve on last cavity and open to manual operation just can carry out.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the embodiments will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of a pneumatic control valve according to the background art of the present invention;

fig. 2 is the structure diagram of a manual-automatic integrated pneumatic control valve of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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.

As shown in fig. 2, a manual-automatic's pneumatic control valve, pneumatic control valve includes valve body 1, valve rod 2 and pneumatic actuator 3, pneumatic actuator passes through the valve rod and is connected with the valve body, be equipped with case 4 in the valve body and connect the front end at the valve rod, pneumatic actuator includes hollow casing 31, divide into cavity 311 and lower cavity 312 through a baffle 32 in the casing, the baffle middle part is equipped with piston chamber 321 and cup joints the end of valve rod, the end of valve rod be equipped with piston chamber complex piston structure 21, the internal air compressor machine 33, step motor 34 and the control circuit board 35 that is equipped with of cavity down, casing one side outer wall is equipped with the hand wheel, be connected with a pivot 36 that runs through the casing activity and set up in the cavity down on the hand wheel, control circuit board is connected with step motor, air compressor machine respectively and controls step motor and air compressor machine work, be equipped with respectively on the valve rod with pivot and step motor complex drive assembly, be equipped with compressed air inlet and outlet 322 on the baffle, compressed air inlet and outlet passes through pipeline 37 and air compressor machine intercommunication. The transmission assembly comprises a first rack 22 and a second rack 23 which are arranged on two sides of the valve rod in a split mode, a first gear 341 is arranged on an output shaft of the stepping motor, the first gear and the first rack are meshed to drive the first gear of the stepping motor to drive the valve rod to move up and down, a second gear 361 is arranged at the tail end of the rotating shaft, the second gear and the second rack are meshed to drive a second gear of the hand wheel to drive the valve rod to move up and down, the bottom of the shell is fixed on the valve body through a support 5, an air escape valve is arranged on the shell, and the air escape valve is communicated with the upper cavity. A stepper motor is an electric motor that converts electrical pulse signals into corresponding angular or linear displacements. When a pulse signal is input, the rotor rotates by an angle or moves one step, the output angular displacement or linear displacement is in direct proportion to the input pulse number, and the rotating speed is in direct proportion to the pulse frequency; the angular displacement of the stepping motor is strictly proportional to the number of pulses input and is synchronized in time with the pulses. The required rotation angle, speed and direction can thus be obtained by controlling the number, frequency and phase sequence of the motor windings. The step angle of the stepping motor is generated by equal proportion control based on the motor structure, and if the subdivision control of the control circuit is not changed, the step angle of the stepping motor is theoretically a fixed angle. Therefore, the control circuit board can accurately know the number and direction of the rotation cycles of the stepping motor through the information such as pulse signals sent by the control circuit board, and the information is converted into displayable data to be displayed on the display screen. The stepping motor may be a commercially available motor, for example, kaifu Y07-59D 1-1300. The control circuit board selects a PCB board with a processor, and comprises the processor and peripheral circuits thereof, for example, the models of the processors which can be adopted are 8096, 8XC196KC, 8XC196KB and the like of intel corporation. When the pneumatic actuator is in power supply problem, for example, under the condition of sudden power failure, the hand wheel can be manually operated by opening the air escape valve, so that the second gear can be driven to rotate, the valve rod is driven to move up and down, and the valve is opened and closed. The air compressor can adopt a micro air compressor, the micro air compressor consists of a fixed seat, a transmission device and a compression device, the fixed seat is provided with a cylindrical containing groove, a shaft lever through hole, a sleeving pipe and a compression cylinder, and a top end jacking pipe is provided with an air valve block, a spring piece and a pressure gauge; the transmission device consists of a balancing weight, a linkage shaft lever and a transmission gear; the compression device consists of a connecting rod, a piston container, a compression valve plate and a compression positioning block; the compression device composed of the compression valve plate and the compression positioning block arranged in the piston container reciprocates in the compression cylinder to push gas to the top pipe and output the gas by the guide pipe, and the two half circumferences of the transmission gear are thick and thin in tooth surface, so that the gas outlet has more driving force to realize gas inlet shortening time, and the gas compression device has the effects of good gas output efficiency, greatly reduced cost and simplicity and convenience in assembly. For example, a commercially available Lyonow/Leynow brand HT50Z-01 model oil-free silent micro air compressor may be used.

In practical application, support 5 includes well connecing portion 51 that encircles the valve rod setting by many support columns 511, well connecing portion upper end be equipped with connect on 52 with bushing, just connect on with casing bottom fixed connection, well connecing portion lower extreme be equipped with down connect on 53 with valve body fixed connection, the valve rod runs through connect on, well connecing portion and lower connect movable setting of portion.

In practical application, the valve rod surrounded by the middle connecting part is provided with an indicating needle 24, and the middle connecting part is provided with an indicating plate 512 matched with the indicating needle.

In practical application, a display panel is arranged on the outer wall of the shell and connected with the control circuit board.

In practical application, a temperature sensor is arranged in the lower cavity body and connected with the control circuit board.

In practical application, the control circuit board is provided with a communication device for communicating with an upper computer.

In practical application, be equipped with upper wall and the lower wall that cavity under the sleeve pipe 38 connection is established to the internal cavity of resorption, the sleeve pipe cover is established on the valve rod, sheathed tube both sides are equipped with opening 381 respectively, first rack and second rack set up towards an opening respectively.

In practical application, be equipped with seal structure 25 between valve rod and valve body, seal structure includes disk seat, valve gap, sealing washer and fills the chamber, the disk seat cover establish on valve rod 2 and with 1 sealing connection of valve body, the valve gap shutoff is in the disk seat tip with form between 2 of disk seat valve rod fill the chamber, it is equipped with sealing filler to fill the intracavity, the sealing washer sets up between valve gap and disk seat. The packing cavity is internally provided with a sealing packing, the valve rod penetrates through the sealing packing, and the valve cover covers the sealing packing. The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. The utility model provides a manual-automatic's pneumatic control valve, pneumatic control valve includes valve body, valve rod and pneumatic actuator, pneumatic actuator passes through the valve rod and is connected with the valve body, be equipped with the case in the valve body and connect the front end at the valve rod, a serial communication port, pneumatic actuator includes hollow casing, divide into cavity and lower cavity through a baffle in the casing, the baffle middle part is equipped with the piston chamber cup joint the end of valve rod, the end of valve rod be equipped with piston chamber complex piston structure, internal air compressor machine, step motor and the control circuit board of being equipped with of cavity down, casing one side outer wall is equipped with the hand wheel, be connected with a pivot that runs through the casing activity and set up in the cavity down on the hand wheel, control circuit board is connected with step motor, air compressor machine respectively and controls step motor and air compressor machine work, be equipped with respectively on the valve rod with pivot and step motor complex transmission assembly, be equipped with compressed air on the baffle and import and export, compressed air imports and exports through pipeline and air compressor machine intercommunication.

2. The automated manual pneumatic regulator valve of claim 1, wherein the housing bottom is secured to the valve body by a bracket.

3. The manual-automatic pneumatic adjusting valve of claim 2, wherein the support comprises a middle connection part which is formed by surrounding a valve rod by a plurality of support columns, an upper connection part is arranged at the upper end of the middle connection part and fixedly connected with the bottom of the shell, a lower connection part is arranged at the lower end of the middle connection part and fixedly connected with the valve body, and the valve rod penetrates through the upper connection part, the middle connection part and the lower connection part and is movably arranged.

4. The automated manual pneumatic control valve of claim 3, wherein the valve stem surrounded by the middle connecting portion is provided with an indicating needle, and the middle connecting portion is provided with an indicating plate matched with the indicating needle.

5. The manual-automatic integrated pneumatic adjusting valve according to claim 1, wherein a display panel is arranged on the outer wall of the shell, and the display panel is connected with the control circuit board.

6. The manual-automatic integrated pneumatic regulating valve according to claim 1, wherein a temperature sensor is arranged in the lower cavity and is connected with a control circuit board.

7. The manual-automatic integrated pneumatic adjusting valve according to claim 1, wherein a communication device is arranged on the control circuit board and is communicated with an upper computer.

8. The manual-automatic integrated pneumatic regulating valve according to any one of claims 1 to 7, wherein the transmission assembly comprises a first rack and a second rack which are arranged on two sides of the valve rod in a row, a first gear is arranged on an output shaft of the stepping motor, the first gear is meshed with the first rack, so that the stepping motor drives the first gear to drive the valve rod to move up and down, a second gear is arranged at the tail end of the rotating shaft, the second gear is meshed with the second rack, so that the hand wheel drives the second gear to drive the valve rod to move up and down, and the shell is fixedly connected with the valve body through a fixed connecting piece.

9. The manual-automatic pneumatic adjusting valve according to claim 8, wherein a sleeve is arranged in the lower cavity and connected with an upper wall and a lower wall of the lower cavity, the sleeve is sleeved on the valve rod, openings are respectively arranged on two sides of the sleeve, and the first rack and the second rack are respectively arranged towards one opening.

10. The automated manual pneumatic control valve of claim 8, wherein a seal is disposed between the valve stem and the valve body.