CN217463407U - Switch valve - Google Patents

Abstract

The utility model discloses a switch valve, include: valve body and drive structure, drive structure and valve body sealing connection, the portable valve rod that is provided with in the valve body, the one end that is located the valve rod sets up the flashboard, the flashboard is suitable for the shutoff disk seat under the drive of valve rod, drive structure includes casing and piston, leave the cavity in the casing, the piston is suitable for the removal to set up in the cavity, the piston divide into first cavity and second cavity with the cavity, it is provided with first through-hole and second through-hole to be located on the casing, first through-hole and first cavity intercommunication, second through-hole and second cavity intercommunication, the valve rod in the valve body penetrates the cavity, valve rod and piston fixed connection, the piston is suitable for driving the valve rod and removes. Through drive structure and valve body integrated design, reduce adapting unit, eliminated the error of valve body and executive structure mechanical connection, reduce the card and pause, risk such as vibrations guarantees that the valve body is more smooth and easy at the operation in-process. The valve body and the driving structure occupy less space integrally and can be installed at a position with limited space.

Description

Switch valve

Technical Field

The utility model relates to a ooff valve technical field, concretely relates to ooff valve.

Background

The switch valve refers to a valve type switch, such as a tap, a pressure cooker valve, and the like, which has a stopping function. The switch valve is divided into a switch valve and an electric switch valve.

In the prior art, an execution structure and a valve body are used as two independent modules, the execution structure and the valve body are respectively designed, manufactured and inspected, and then the execution structure is subjected to model selection and the valve body forms a whole according to the thrust or torque required by the valve body.

After the valve body and the execution structure are combined, the overall volume of the valve body and the execution structure is large, so that the valve body and the execution structure cannot be installed in a place with limited installation space; because the valve body and the execution structure are the reason of later-stage combination, the transmission error phenomenon exists in the opening or closing process of the valve body.

SUMMERY OF THE UTILITY MODEL

Therefore, the to-be-solved technical problem of the utility model lies in overcoming the phenomenon that occupies the volume great and have transmission error after valve and executive structure make up among the prior art.

Therefore, the utility model provides a switch valve, include:

a valve body adapted to have a valve stem movably disposed therein;

the driving structure is connected with the valve body in a sealing mode and comprises a shell, a cavity is formed in the shell, a piston is movably arranged in the cavity, and a first through hole and a second through hole are formed in the shell and are respectively communicated with the cavity;

one end of the valve rod is connected with the flashboard, and the other end of the valve rod is fixedly connected with the piston.

Further, the dust cover is arranged on the shell;

the connecting rod is connected with the piston, penetrates through the shell and is suitable for being movably arranged in the dust cover, and an indicating plate is arranged on the connecting rod in the dust cover.

Furthermore, a first limit switch and a second limit switch are arranged on the dust cover,

the first limit switch is suitable for reading and outputting a first position of the indicator plate, and the second limit switch is suitable for reading and outputting a second position of the indicator plate.

Furthermore, a first sealing ring is arranged at the joint of the connecting rod and the shell.

Further, the driving structure further comprises a limiting member, and the limiting member is adapted to limit a moving space of the piston in the cavity.

Furthermore, the limiting part comprises a bolt and a nut, the bolt and the nut are arranged on the shell, and one end of the bolt is arranged in the cavity.

Further, a second sealing ring is arranged at the position where the valve rod is matched with the driving structure.

Furthermore, a third sealing ring is arranged at the matching position of the piston and the shell.

Further, the driving structure is detachably arranged on the valve body.

Further, the method also comprises the following steps: a pneumatic control valve, an electromagnetic valve and a filtering pressure reducing valve,

the pneumatic control valve is respectively connected with the first through hole and the second through hole;

the electromagnetic valve, the filtering pressure reducing valve and the pneumatic control valve are connected with each other.

The utility model discloses technical scheme has following advantage:

1. the utility model provides a switch valve, include: valve body and drive structure, drive structure and valve body sealing connection, the portable valve rod that is provided with in the valve body, the one end that is located the valve rod is provided with the flashboard, the flashboard is suitable for the shutoff disk seat under the drive of valve rod, drive structure includes casing and piston, leave the cavity in the casing, the piston is suitable for the removal to set up in the cavity, the piston divide into first cavity and second cavity with the cavity, it is provided with first through-hole and second through-hole to be located on the casing, first through-hole and first cavity intercommunication, second through-hole and second cavity intercommunication, the valve rod in the valve body penetrates the cavity, valve rod one end is connected with the flashboard, the other end and piston fixed connection, the piston is suitable for driving the valve rod and removes.

The switch valve of this structure, the valve rod of valve body and the piston lug connection of drive structure, drive structure can drive the valve rod and remove the switch that realizes the switch valve, simultaneously, by the whole valve gap part and the execution structure who replaces traditional switch valve of drive structure, realize drive structure and valve body integration. Drive structure and valve body integrated design reduce adapting unit, have eliminated the error of valve body and executive structure mechanical connection, reduce the card pause, risk such as vibrations guarantees that the valve body is more smooth and easy at the operation in-process, because drive structure simple structure compares with traditional executive structure, and the whole occupation space of valve body and drive structure is less, has practiced thrift the installation and the use cost of valve body, can install in the limited position in space.

2. The utility model provides a switch valve is connected with the connecting rod on the piston, and the piston removes and further drives the connecting rod and removes, is provided with the indicator board on the connecting rod, through the position that the indicator board was located, instructs the on-off state of valve body.

3. The utility model provides a switch valve is located and is provided with first limit switch and second limit switch on the dust cover, and first limit switch and second limit switch are used for reading respectively and export the position of indicator board to the operating personnel long-range on-off state who reads switch valve.

4. The utility model provides a switch valve sets up the locating part in the drive structure, through the position of adjusting bolt in the cavity, restricts the removal space of piston, further realizes realizing accurate control to the shift position of valve rod.

5. The utility model provides a switch valve, switch valve still are provided with the filtration relief pressure valve, guarantee gaseous purity in the cavity through filtering the relief pressure valve, and the switch valve still is provided with solenoid valve and gas accuse valve, and the staff can control the air current tassels through solenoid valve and gas accuse valve, further accurate control switch valve switch.

Drawings

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

Fig. 1 is a sectional view of an on-off valve in embodiment 1 of the present invention;

fig. 2 is a sectional view of a driving structure in the on-off valve according to embodiment 1 of the present invention;

fig. 3 is a sectional view of a driving structure in the on-off valve according to embodiment 1 of the present invention;

fig. 4 is a schematic view of the connection between the driving structure and the valve body in the switching valve according to embodiment 1 of the present invention;

fig. 5 is a schematic plan view of an on-off valve in embodiment 1 of the present invention;

description of reference numerals:

1. a valve body; 2. a drive structure; 3. a valve seat; 4. a gate plate; 5. a valve stem; 6. a second seal ring; 7. a first limit switch; 8. a second limit switch; 9. a piston; 10. a connecting rod; 11. a first through hole; 12. a second through hole; 13. a dust cover; 14. an indicator panel; 15. a limiting member; 16. a pneumatic control valve; 17. an electromagnetic valve; 18. a connecting member; 19. and (4) filtering the pressure reducing valve.

Detailed Description

The technical solutions of the present invention will be described more clearly and completely with reference to the accompanying drawings, and it should be understood 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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "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" and "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.

Example 1

The present embodiment provides an on-off valve, as shown in fig. 1, 2 and 3, including: valve body 1 and drive structure 2, drive structure 2 and 1 sealing connection of valve body, the portable valve rod 5 that is provided with in the valve body 1, the one end that is located valve rod 5 is provided with flashboard 4, flashboard 4 is suitable for shutoff disk seat 3 under the drive of valve rod 5, drive structure 2 includes casing and piston 9, leave the cavity in the casing, piston 9 is suitable for the removal to set up in the cavity, piston 9 divides into first cavity and second cavity with the cavity, it is provided with first through-hole 11 and second through-hole 12 to be located on the casing, first through-hole 11 and first cavity intercommunication, second through-hole 12 and second cavity intercommunication, valve rod 5 in the valve body 1 penetrates the cavity, valve rod 5 and piston 9 fixed connection, piston 9 is suitable for drive valve rod 5 and removes.

The switch valve of this structure, valve rod 5 of valve body 1 and the piston 9 lug connection of drive structure 2, drive structure 2 can drive valve rod 5 and remove the switch that realizes the switch valve, simultaneously, by drive structure 2 whole valve gap part and the execution structure who replaces traditional switch valve, realize drive structure 2 and valve body 1 integration. Drive structure 2 and valve body 1 integrated design reduce adapting unit, eliminated valve body 1 and the error of executive structure mechanical connection, reduce the card pause, risk such as vibrations, it is more smooth and easy to guarantee valve body 1 at the operation in-process, because drive structure 2 simple structure, compare with traditional executive structure, valve body 1 and the whole occupation space of drive structure 2 are less, the installation and the use cost of having practiced thrift valve body 1, and provide reliable solution for the restricted installation site in space.

Specifically, as shown in fig. 2 and 3, the driving structure 2 includes a dust cover 13, a connecting rod 10 and an indicating plate 14, wherein the dust cover 13 is disposed on the housing, the dust cover 13 is hermetically connected with the housing, the connecting rod 10 is connected with the piston 9, the connecting rod 10 enters the dust cover 13 through the housing, the piston 9 moves up and down in the cavity to drive the connecting rod 10 to move up and down in the dust cover 13, the indicating plate 14 is disposed on the connecting rod 10 located in the dust cover 13, the connecting rod 10 moves up and down to further drive the indicating plate 14 to move up and down in the dust cover 13, and a worker can directly indicate the opening and closing state of the valve body 1 through the indicating plate 14, as shown in fig. 2, the indicating plate 14 is located, the gate plate 4 blocks the valve seat 3, and the opening and closing state of the switch valve is set in a closed state; as shown in fig. 3, the indicator plate 14 is in a position where the shutter plate 4 does not block the valve seat 3, and the on-off valve is in an open state.

Specifically, as shown in fig. 2 and 3, the dust cover 13 is further provided with a first limit switch 7 and a second limit switch 8, the first limit switch 7 and the second limit switch 8 are located at different positions, and the first limit switch 7 and the second limit switch 8 are respectively used for reading and outputting the position of the indicator plate 14, so that a worker can remotely read the on-off state of the on-off valve. As shown in fig. 2 and 3, the first limit switch 7 is used to read the position of the indicating plate 14 in the state where the open/close valve is completely opened, and the second limit switch 8 is used to read the position of the indicating plate 14 in the state where the open/close valve is completely closed.

As shown in fig. 2 and 3, the axis of the connecting rod 10 and the axis of the piston 9 are arranged collinearly. The connecting rod 10 and the shell are provided with a first sealing ring at the joint, so that the phenomenon of air leakage at the joint of the connecting rod 10 and the shell in the moving process is prevented.

Specifically, as shown in fig. 2 and 3, the driving structure 2 is further provided with a limiting member 15, and the limiting member 15 limits a moving space of the piston 9 in the cavity, so as to further realize accurate control of a moving position of the valve rod 5. The limiting member 15 comprises a bolt and a nut, the bolt and the nut are arranged on the shell, one end of the bolt is arranged in the first cavity, and the moving space of the piston 9 in the cavity can be limited by adjusting the position of the end of the bolt in the first cavity.

As shown in figure 1, a second sealing ring 6 is arranged at the matching position of the valve rod 5 and the driving structure 2, so that the sealing performance of the connecting position of the valve body 1 and the driving structure 2 is ensured, and a medium in the valve body 1 is prevented from entering the driving structure 2.

As shown in fig. 2 and 3, a third sealing ring is arranged at the matching position of the piston 9 and the valve body 1, the piston 9 is disc-shaped, and the third sealing ring is arranged on the outer ring of the piston 9 and matched with the inner wall of the cavity.

Specifically, as shown in fig. 5, the switch valve is further provided with a filtering pressure reducing valve 19, the purity of the gas in the cavity is ensured through the filtering pressure reducing valve 19, the switch valve is further provided with an electromagnetic valve 17 and a pneumatic control valve 16, the pneumatic control valve 16 is respectively connected with the first through hole 11 and the second through hole 12, the electromagnetic valve 17, the filtering pressure reducing valve 19 and the pneumatic control valve 16 are connected with each other, and a worker can control the airflow tassel through the electromagnetic valve 17 and the pneumatic control valve 16 to further precisely control the switch of the switch valve.

The working principle of the switch valve is as follows: be provided with disk seat 3 in the valve body 1, be located 3 one sides of disk seat and movably be provided with flashboard 4, wherein, flashboard 4 sets up on valve rod 5, and valve rod 5 can remove in valve body 1, and valve rod 5 removes and further drives flashboard 4 and remove, realizes closing and opening of ooff valve through removing valve rod 5. Drive structure 2 and valve body 1 welding together, in the one end of valve rod 5 penetrated the cavity, valve rod 5 and the piston 9 fixed connection in the cavity, piston 9 removed in the cavity, further driven valve rod 5 and flashboard 4 remove. The worker can control the gas flow in the first through hole 11 and the second through hole 12 through the electromagnetic valve 17 and the pneumatic control valve 16 to further push the piston 9 to move in the cavity; the piston 9 drives the connecting rod 10 on the piston 9 to move while moving, the connecting rod 10 further drives the indicating plate 14 to move, and a worker can observe the position of the indicating plate 14 through the dust cover 13 to further judge the opening and closing state of the switch valve. The dust cover 13 is provided with a first limit switch 7 and a second limit switch 8, and the first limit switch 7 and the second limit switch 8 are respectively used for reading and outputting the position of the indicating plate 14, so that a worker can remotely read the on-off state of the switch valve.

As a first alternative embodiment of the embodiment 1, the connecting rod 10 may also be arranged at other positions of the piston 9, for example, the connecting rod 10 is arranged on the surface of the piston 9, and the axial direction of the connecting rod 10 is parallel to the moving direction of the piston 9.

As a second alternative embodiment of embodiment 1, the limiting member 15 may also be a telescopic rod, the telescopic rod is disposed on the upper portion of the housing, one end of the telescopic rod is disposed in the first cavity, the end of the telescopic rod in the first cavity can be adjusted in position, and the moving space of the piston 9 in the cavity can be limited by adjusting the position of the end of the telescopic rod in the first cavity.

Example 2

The present embodiment provides an on-off valve, which is different from the on-off valve provided in embodiment 1 in that: the driving structure 2 is detachably and hermetically connected with the valve body 1, as shown in fig. 4, connecting holes are formed in the valve body 1 and the driving structure 2, and the valve body 1 and the driving structure 2 are fixedly connected through a connecting piece 18, wherein the connecting piece 18 can be a bolt or the like. Drive structure 2 can dismantle with valve body 1 and be connected, and the staff later stage valve body 1 of being convenient for overhauls and maintains.

It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications can be made without departing from the scope of the invention.

Claims (10)

1. An on-off valve, comprising:

a valve body (1) in which a valve stem (5) is adapted to be movably arranged;

the driving structure (2) is connected with the valve body (1) in a sealing mode, the driving structure (2) comprises a shell, a cavity is formed in the shell, a piston (9) is movably arranged in the cavity, and the shell is provided with a first through hole (11) and a second through hole (12) which are communicated with the cavity respectively;

valve rod (5) one end is connected with flashboard (4), the other end with piston (9) fixed connection.

2. A switch valve as claimed in claim 1, characterized in that said drive structure (2) further comprises: the dustproof cover (13) is arranged on the shell;

the connecting rod (10) is connected with the piston (9), the connecting rod (10) penetrates through the shell, the connecting rod (10) is suitable for being movably arranged in the dust cover (13), and an indicating plate (14) is arranged on the connecting rod (10) in the dust cover (13).

3. A switch valve according to claim 2, characterized in that the dust cover (13) is provided with a first limit switch (7) and a second limit switch (8),

the first limit switch (7) is adapted to read and output a first position of the indicator plate (14), and the second limit switch (8) is adapted to read and output a second position of the indicator plate (14).

4. The switch valve according to claim 2, characterized in that a first sealing ring is provided at the connection of the connecting rod (10) and the housing.

5. A switch valve as claimed in any one of claims 1 to 4, characterized in that the drive structure (2) further comprises a limit stop (15), the limit stop (15) being adapted to limit the movement space of the piston (9) within the cavity.

6. A switch valve as claimed in claim 5, characterized in that said stop (15) comprises a bolt and a nut provided on said housing, one end of said bolt being provided in said cavity.

7. Switching valve according to any of claims 1-4, characterized in that the valve stem (5) where it cooperates with the drive structure (2) is provided with a second sealing ring (6).

8. Switching valve according to any of claims 1-4, characterized in that the piston (9) is provided with a third sealing ring where it cooperates with the housing.

9. Switching valve according to any of claims 1-4, characterized in that the drive structure (2) is detachably arranged to the valve body (1).

10. The switching valve according to any one of claims 1 to 4, further comprising: a pneumatic control valve (16), an electromagnetic valve (17) and a filtering pressure reducing valve (19),

the pneumatic control valve (16) is respectively connected with the first through hole (11) and the second through hole (12);

the electromagnetic valve (17), the filtering and pressure reducing valve (19) and the pneumatic control valve (16) are connected with each other.

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