CN217539703U

CN217539703U - Three-way normally open pneumatic control valve

Info

Publication number: CN217539703U
Application number: CN202122154806.4U
Authority: CN
Inventors: 倪春晓; 刘念; 张杨杨
Original assignee: Jiangsu Yiheng Automation Equipment Co ltd
Current assignee: Jiangsu Yiheng Automation Equipment Co ltd
Priority date: 2021-09-07
Filing date: 2021-09-07
Publication date: 2022-10-04
Anticipated expiration: 2031-09-07

Abstract

The utility model belongs to the technical field of the pneumatic control valve technique and specifically relates to a pneumatic control valve is normally opened to tee bend, including pilot valve module protecgulum, pilot valve module valve body and tee bend module valve body, the piston cavity has been seted up to pilot valve module valve body inside. The utility model discloses a tee bend normally open gas accuse valve comprises pilot valve module protecgulum, pilot valve module valve body and tee bend module valve body, adopts split type assembly devices, can make things convenient for the dismouting, reduces production and later stage service function cost; the whole valve body has compact structure, small volume, low failure rate and longer service life; the spring for the pilot piston and the spring for the three-way module valve core are matched with each other to adjust the internal pressure difference, the spring can be rapidly disassembled and replaced as required to change the adjustable range, and the application range is wider.

Description

Three-way normally open pneumatic control valve

Technical Field

The utility model belongs to the technical field of pneumatic control valve technique and specifically relates to a tee bend normally open gas accuse valve.

Background

The pneumatic control valve refers to various pneumatic elements which control the pressure, flow and flow direction of airflow in a pneumatic system and ensure the normal operation of a pneumatic actuator or mechanism. The structure of the pneumatic control valve can be decomposed into a valve body and a valve core, and the valve body and the valve core are of a normally closed type and a normally open type according to the relative positions of the valve body and the valve core. The valves can be structurally divided into: stop type, sliding column type and sliding plate type valves.

The elements that control and regulate the flow of compressed air are called flow control valves. The element that changes and controls the direction of the airflow is called a directional control valve. In addition to the three types of control valves, there are logic elements capable of implementing certain logic functions, including fluidic elements without movable parts inside the elements and pneumatic logic elements with movable parts. In structural principle, the logic element is basically the same as the directional control valve, is only small in volume and path, and is generally used for realizing the logic operation function of signals. In recent years, with the miniaturization of pneumatic elements and the large number of applications of PLC control in pneumatic systems, the range of applications of pneumatic logic elements is gradually decreasing. From the control mode, the pneumatic control can be divided into intermittent control and continuous control. In a discontinuous control system, a pressure control valve, a flow control valve and a directional control valve are generally used to realize a programmed operation; in a continuous control system, in addition to pressure and flow control valves, servo and proportional control valves are used to continuously control the system.

The pneumatic control valve on the market at present is fixed in structure, and the dismouting is very inconvenient, leads to inside pressure regulating mechanism can't dismantle the change fast, and application scope is very single.

SUMMERY OF THE UTILITY MODEL

The to-be-solved technical problem of the utility model is: in order to solve the problems existing in the prior art, the improved three-way normally-open pneumatic control valve is provided, and the problems that the pneumatic control valve on the market is fixed in structure and inconvenient to disassemble and assemble, so that an internal pressure regulating mechanism cannot be disassembled and replaced quickly, and the application range is very single are solved.

The utility model provides a technical scheme that its technical problem adopted is: the utility model provides a tee bend normally opens gas accuse valve, includes pilot valve module protecgulum, pilot valve module valve body and tee bend module valve body, the inside piston cavity of having seted up of pilot valve module valve body, the inside spring for the pilot piston that slides and be provided with the pilot valve piston and be located pilot valve piston right side of piston cavity, the inside regulation cavity of having seted up inside regulation cavity, inside slide and be equipped with the tee bend module case push rod with coaxial fixed of pilot valve piston right-hand member, through tee bend module case push rod right-hand member tee bend normally open module case ejector pin that the spring is connected for the tee bend module case ejector pin and fix the tee bend normally open module case at tee bend normally open module case ejector pin right-hand member, inside regulation cavity be located tee bend normally open module case ejector pin outside fixedly connected with tee bend normally open module case seat, inside be located right side open position fixedly connected with tee bend normally open module air inlet connector of adjusting the chamber.

And O-shaped sealing rings are respectively arranged between the connection surfaces of the front cover of the pilot valve module and the valve body of the pilot valve module, between the outer side of the pilot valve piston and the internal connection surface of the piston cavity, and between the inner side surface of the three-way module valve body and the connection surface of the valve core push rod of the three-way module, between the valve core seat of the three-way normally-opened module and the internal wall connection surface of the internal regulation cavity, and between the air inlet joint of the three-way normally-opened module and the internal wall connection surface of the internal regulation cavity.

The left side surface of the front cover of the pilot valve module is provided with four lateral assembly through holes internally provided with inner hexagon bolts, and the outer sides of the inner hexagon bolts are sleeved with spring washers for preventing loosening.

The outer side surface of the valve body of the pilot valve module is provided with a plurality of circular first flow guide through holes communicated with the interior of the piston cavity, and the outer walls of the two sides of the valve body of the three-way module are symmetrically provided with circular second flow guide through holes communicated with the interior adjusting cavity.

The pilot valve piston and the three-way module valve core push rod are of a fixed integrated structure.

The outer side surface of the three-way normally-open module valve core seat is provided with an annular guide groove, and the inner side surface of the annular guide groove is provided with a circular third guide through hole communicated with the inside of the three-way normally-open module valve core seat.

The utility model has the advantages that:

(1) The utility model discloses a tee bend normally open gas accuse valve comprises pilot valve module protecgulum, pilot valve module valve body and tee bend module valve body, adopts split type assembly devices, can make things convenient for the dismouting, reduces production and later stage service function cost;

(2) The whole valve body has compact structure, small volume, low failure rate and longer service life;

(3) The spring for the pilot piston and the spring for the three-way module valve core are matched with each other to adjust the internal pressure difference, the spring can be rapidly disassembled and replaced as required to change the adjustable range, and the application range is wider.

Drawings

The present invention will be further explained with reference to the drawings and examples.

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is an internal cross-sectional view of the present invention.

Detailed Description

The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic drawings and illustrate the basic structure of the present invention only in a schematic manner, and thus show only the components related to the present invention.

Fig. 1 and fig. 2 show tee bend normally open gas accuse valve, including pilot valve module protecgulum 1, pilot valve module valve body 2 and tee bend module valve body 3, piston cavity 4 has been seted up to pilot valve module valve body 2 inside, piston cavity 4 inside slides and is provided with pilot valve piston 5 and is located the spring 6 for the pilot valve piston on pilot valve piston 5 right side, tee bend module valve body 3 inside has been seted up inside and has been adjusted cavity 7, inside sliding of inside adjustment cavity 7 is equipped with the tee bend module case push rod 8 with the coaxial fixed of pilot valve piston 5 right-hand member, tee bend normally open module case ejector pin 10 that is connected with spring 9 through tee bend module case push rod 8 right-hand member tee bend module case and the coaxial tee bend normally open module case 11 of fixing at tee bend module case ejector pin 10 right-hand member, inside of adjusting cavity 7 is located tee bend module case ejector pin 10 outside fixedly connected with tee bend normally open module case seat 12, inside of adjusting cavity 7 is located right side open position fixedly connected with tee bend normally open module air inlet connection 13.

Further, in order to cooperate with the improvement of the sealing performance of the internal connection surface, O-shaped sealing rings 14 are respectively installed between the connection surfaces of the front cover 1 and the valve body 2 of the pilot valve module, between the outer side of the piston 5 of the pilot valve and the internal connection surface of the piston chamber 4, and the inner side surface of the valve body 3 of the three-way module is located at the position of the connection surface of the three-way module valve core push rod 8, between the valve core seat 12 of the three-way normally-open module and the internal wall connection surface of the internal regulation chamber 7, and between the air inlet joint 13 of the three-way normally-open module and the internal wall connection surface of the internal regulation chamber 7.

Further, in order to facilitate assembly, four lateral assembly through holes with built-in hexagon socket head cap bolts 15 are formed in the left side surface of the front cover 1 of the pilot valve module, and a spring washer 16 for preventing loosening is sleeved on the outer side of the hexagon socket head cap bolt 15.

Four lateral installation through holes for installation are also formed in the outer wall of the right side of the three-way module valve body 3.

Furthermore, in order to match with external flow guiding, 2 circular first flow guiding through holes 17 communicated with the interior of the piston chamber 4 are formed in the outer side surface of the valve body 3 of the pilot valve module, and circular second flow guiding through holes 18 communicated with the interior adjusting chamber 7 are symmetrically formed in the outer walls of the two sides of the valve body 3 of the three-way module.

Further, in order to improve structural firmness, the pilot valve piston 5 and the three-way module valve core push rod 8 are of a fixed integrated structure.

Further, in order to cooperate with internal diversion, external pressure is led into the interior of the three-way normally-open module valve core seat 12, an annular diversion groove 19 is formed in the outer side face of the three-way normally-open module valve core seat 12, and a circular third diversion through hole 20 communicated with the interior of the three-way normally-open module valve core seat 12 is formed in the inner side face of the annular diversion groove 19.

The utility model discloses a tee bend normally open gas accuse valve comprises pilot valve module protecgulum 1, pilot valve module valve body 2 and tee bend module valve body 3, adopts split type assembly devices, can conveniently dismouting, reduces production and later stage use function cost; the whole valve body has compact structure, small volume, low failure rate and longer service life; the spring 6 for the pilot piston and the spring 9 for the three-way module valve core are matched with each other to adjust the internal pressure difference, the springs can be rapidly disassembled and replaced as required to change the adjustable range, and the application range is wider.

In light of the foregoing, it will be apparent to those skilled in the art from this disclosure that various changes and modifications can be made without departing from the spirit and scope of the invention. The technical scope of the present invention is not limited to the content of the description, and must be determined according to the scope of the claims.

Claims

1. The utility model provides a gas accuse valve is normally opened to tee bend, includes pilot valve module protecgulum (1), pilot valve module valve body (2) and tee bend module valve body (3), characterized by: the internal adjusting device is characterized in that a piston cavity (4) is arranged inside the pilot valve module valve body (2), a pilot valve piston (5) and a spring (6) for the pilot piston located on the right side of the pilot valve piston (5) are arranged inside the piston cavity (4) in a sliding mode, an internal adjusting cavity (7) is arranged inside the three-way module valve body (3), the internal adjusting cavity (7) is assembled with a three-way module valve core push rod (8) coaxially fixed with the right end of the pilot valve piston (5), a three-way normally-open module valve core push rod (10) connected with a spring (9) for the three-way module valve core through the three-way module valve core push rod (8) at the right end in a sliding mode, and a three-way normally-open module valve core (11) coaxially fixed at the right end of the three-way normally-open module valve core push rod (10) at the right end in the internal adjusting cavity, a three-way normally-open module air inlet connector (13) is fixedly connected with the right-side opening position in the internal adjusting cavity (7), four built-in inner hexagon-bolt (15) lateral assembling through holes are formed in the left side face of the pilot valve module front cover (1), and a hexagon bolt (15) is sleeved spring (16) used for preventing the spring from being released.

2. The three-way normally open pneumatic control valve according to claim 1, characterized in that: the pilot valve module front cover (1) and the pilot valve module valve body (2) are connected between the surfaces, the outer side of a pilot valve piston (5) and the inner connecting surface of a piston chamber (4) are connected between the inner side surface of a three-way module valve body (3) is located at the position of the connecting surface of a three-way module valve core push rod (8), and O-shaped sealing rings (14) are respectively arranged between the three-way normally-opened module valve core seat (12) and the inner wall connecting surface of an inner adjusting chamber (7) and between the three-way normally-opened module air inlet connector (13) and the inner wall connecting surface of the inner adjusting chamber (7).

3. The three-way normally open pneumatic control valve according to claim 1, which is characterized in that: the outer side surface of the pilot valve module valve body (2) is provided with a plurality of circular first flow guide through holes (17) communicated with the interior of the piston chamber (4), and the outer walls of the two sides of the three-way module valve body (3) are symmetrically provided with circular second flow guide through holes (18) communicated with the interior adjusting chamber (7).

4. The three-way normally open pneumatic control valve according to claim 1, characterized in that: the pilot valve piston (5) and the three-way module valve core push rod (8) are of a fixed integrated structure.

5. The three-way normally open pneumatic control valve according to claim 1, which is characterized in that: an annular guide groove (19) is formed in the outer side face of the three-way normally-open module valve core seat (12), and a circular third guide through hole (20) communicated with the interior of the three-way normally-open module valve core seat (12) is formed in the inner side face of the annular guide groove (19).