CN219062492U

CN219062492U - Pneumatic vacuum gate valve

Info

Publication number: CN219062492U
Application number: CN202223588667.7U
Authority: CN
Inventors: 盛一冰; 何善良; 姚勇
Original assignee: Ningbo Instrument Valve Factory
Current assignee: Ningbo Instrument Valve Factory
Priority date: 2022-12-31
Filing date: 2022-12-31
Publication date: 2023-05-23
Anticipated expiration: 2032-12-31

Abstract

The utility model provides a pneumatic vacuum gate valve, which comprises a valve shell, a pneumatic driving assembly and a valve core assembly, wherein the pneumatic driving assembly comprises a cylinder piston mechanism, a piston seat protruding away from one side of the valve core assembly is arranged in the middle of an inner cavity of the valve shell, a through hole for accommodating a piston rod of the cylinder piston mechanism is arranged in the center of the piston assembly, the free end of the piston rod penetrates through the through hole to be connected with the valve core assembly, the pneumatic driving assembly also comprises a cylinder control valve communicated with a cylinder of the cylinder piston mechanism, the cylinder control valve is communicated with the cylinder control valve through two communicating valves arranged outside the valve shell, one end of the cylinder control valve is cylindrical, one end of the cylinder control valve is fixedly arranged on the valve shell, the center axis of the cylinder control valve is parallel to the center axis of the cylinder piston mechanism, the pneumatic structure is reasonably distributed, the straightness of output feeding motion is stable and easy to control, the integral mechanical transmission requirement of the valve is reduced, and the pneumatic vacuum gate valve has the advantages of flexible response and less mechanical abrasion and less heating.

Description

Pneumatic vacuum gate valve

Technical Field

The utility model relates to the technical field of valves, in particular to a pneumatic vacuum gate valve.

Background

The vacuum gate valve is a valve for isolating a vacuum pipeline and blocking airflow, and is an important vacuum element. The existing vacuum gate valve structure mainly comprises an electric control structure, a servo motor and other structures are used for outputting rotation motion with controllable cycle number, and then the rotation motion is converted into linear feeding motion with controllable feeding amount through other mechanical structures to push a valve plate, or the linear feeding motion is directly output and fed through a linear motor, so that the valve core structure is relatively complex, the weight of the valve core is relatively heavy, in order to ensure the sealing effect of the valve core, the matching precision requirement on the valve core and a shell is relatively high, the precision requirement on parts of the valve core is also high, the processing difficulty is high, the manufacturing cost is high, and particularly when the shell of the valve is subjected to concave deformation due to vacuumizing, the valve core is easy to be blocked at the position of a valve closing position, so that the valve core cannot be opened, and the strength requirement on the shell of the valve is extremely high. Meanwhile, because the structure is complex, the overall assembly efficiency of the valve is low, and the overall cost is high. Besides, the control inherent to the electric control is inflexible, the response is relatively slow, and the method is not suitable for the application occasions with accurate and frequent opening and closing.

In summary, the existing vacuum gate valve has the problems of complex structure, poor use effect and the like.

Disclosure of Invention

The utility model aims to solve the technical problems that the existing vacuum gate valve is complex in structure, poor in use effect and the like.

In order to solve the problems, the pneumatic vacuum gate valve comprises a valve housing, a pneumatic driving assembly and a valve core assembly, wherein the pneumatic driving assembly comprises a cylinder piston mechanism, a piston seat protruding away from one side of the valve core assembly is arranged in the middle of an inner cavity of the valve housing, a through hole for accommodating a piston rod of the cylinder piston mechanism is arranged in the center of the piston group, the free end of the piston rod penetrates through the through hole to be connected with the valve core assembly, the pneumatic driving assembly further comprises a cylinder control valve communicated with a cylinder of the cylinder piston mechanism, the cylinder control valve is communicated with the cylinder control through two communicating valves arranged outside the valve housing, the cylinder control valve is cylindrical, one end of the cylinder control valve is fixedly installed with the valve housing, and the center axis of the cylinder control valve is parallel to the center axis of the cylinder piston mechanism.

As the preferable scheme, be provided with the right angle mounting that is used for the installation to be connected between the cylinder control valve with the valve casing, the one end of right angle mounting with the medium plate surface laminating installation of valve casing is fixed, the other end of right angle mounting with the side installation that the cylinder control valve is close to the bottom is fixed.

As the preferable scheme, be provided with boss structure on the piston seat, the basal portion periphery cover of piston rod is equipped with annular separation blade, boss structure with the one side that the separation blade is in opposite directions all is provided with the elasticity bradyseism ring, elasticity bradyseism ring cover in the piston rod periphery.

As a preferable scheme, a cylinder mounting cavity for nesting and fixing the cylinder is arranged in the valve housing, a set screw is arranged at one end in the cylinder mounting cavity, and the cylinder is mounted and fixed through the set screw.

Preferably, the valve housing is provided with a through-hole structure on a side wall of a side accommodating the piston rod.

Preferably, the piston rod comprises a piston member matched with the cylinder and an extension rod connected with one end of the piston member, and the extension rod and the piston member are coaxially installed and connected through shaft holes and connecting screws of the end faces of the extension rod and the piston member.

Preferably, the valve core assembly comprises a valve plate and a connecting rod assembly, and one end of the connecting rod assembly is rotatably connected with the free end of the piston rod through a pin.

The utility model provides a pneumatic vacuum gate valve, which comprises a valve housing, a pneumatic driving assembly and a valve core assembly, wherein the pneumatic driving assembly comprises a cylinder piston mechanism, a piston seat protruding away from one side of the valve core assembly is arranged in the middle of an inner cavity of the valve housing, a through hole for accommodating a piston rod of the cylinder piston mechanism is arranged in the center of the piston group, the free end of the piston rod penetrates through the through hole to be connected with the valve core assembly, the pneumatic driving assembly further comprises a cylinder control valve communicated with a cylinder of the cylinder piston mechanism, the cylinder control valve is communicated with the cylinder control valve through two communicating valves arranged outside the valve housing, the cylinder control valve is cylindrical, one end of the cylinder control valve is fixedly arranged with the valve housing, and the center axis of the cylinder control valve is parallel to the center axis of the cylinder piston mechanism. The pneumatic vacuum gate valve provided by the utility model replaces the common control motor design in the prior art with the pneumatic cylinder piston mechanism, the cylinder control valve arranged on the gate valve shell is used for controlling the movement of the cylinder piston mechanism by directional gas transmission, the piston rod is driven to do feeding movement relative to the valve shell, so as to drive the valve core component connected with the piston rod to do corresponding opening and closing actions. In summary, the pneumatic vacuum gate valve provided by the utility model effectively solves the problems of complex structure, poor use effect and the like of the existing vacuum gate valve.

Drawings

Fig. 1 is a schematic structural diagram of a pneumatic vacuum gate valve provided by the utility model.

Wherein, in fig. 1:

1. a set screw; 2. a piston member; 3. a baffle; 4. a cylinder control valve; 5. a right angle fixing member; 6. a communication valve; 7. an elastic damping ring; 8. an extension rod; 9. a piston seat; 10. a through hole structure; 11. a valve housing; 12. a connecting rod assembly; 13. a valve plate.

Detailed Description

The following description of the present utility model will be made clearly and fully, and it is apparent that the embodiments described are some, but not all, of the embodiments of the present utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1, fig. 1 is a schematic structural diagram of a pneumatic vacuum gate valve according to the present utility model.

The pneumatic vacuum gate valve provided in this embodiment, including valve casing 11, pneumatic drive subassembly and case subassembly, pneumatic drive subassembly includes cylinder piston mechanism, valve casing 11 inner chamber middle part is provided with the bellied piston seat 9 in case subassembly one side that deviates from, the piston group center is provided with the through-hole that holds cylinder piston mechanism's piston rod, the free end of piston rod passes through the through-hole and connects the case subassembly, pneumatic drive subassembly still includes the cylinder control valve 4 with cylinder piston mechanism's cylinder UNICOM, cylinder control valve 4 is through setting up two UNICOM valves 6 outside valve casing 11 with cylinder control UNICOM, cylinder control valve 4 is cylindric, its one end is fixed with valve casing 11 installation, the axis of cylinder control valve is parallel with cylinder piston mechanism's axis.

According to the pneumatic vacuum gate valve provided by the embodiment, the pneumatic cylinder piston mechanism replaces the common control motor design in the prior art, the cylinder control valve arranged on the gate valve shell is used for controlling the movement of the cylinder piston mechanism through directional gas transmission, the piston rod is driven to do feeding movement relative to the valve shell, so that the valve core component connected with the piston rod is driven to do corresponding opening and closing actions. In conclusion, the pneumatic vacuum gate valve provided by the utility model effectively solves the problems of complex structure, poor using effect and the like of the existing vacuum gate valve.

Compared with the embodiment, the embodiment further optimizes the connection scheme between the cylinder control valve and the valve whole, a right-angle fixing piece 5 for installation connection is arranged between the cylinder control valve and the valve shell, one end of the right-angle fixing piece 5 is fixedly attached to the middle plate surface of the valve shell, and the other end of the right-angle fixing piece is fixedly attached to the side surface, close to the bottom, of the cylinder control valve.

The structure that has increased right angle mounting in this embodiment is as the installation connected mode between cylinder control valve and the valve casing, and right angle mounting is including being the integrative linking piece mounting structure of right angle form, one of them is installed with the side face of cylinder control valve, and another piece is connected fixedly with the medium plate of valve casing, and the medium plate cuts apart one side with the valve casing and mainly holds the case subassembly, and the opposite side mainly holds control assembly, and this structure integral erection is easy, is fit for being used for as the installation fixed of the control valve that often needs the dismouting, and can avoid the vibrations of push-pull valve during normal work to influence the accurate control of cylinder control valve.

On the basis of the above embodiments, the structural design of the valve housing, specifically, the internal piston seat 9 of the valve housing is further optimized, the stability of the piston rod position is ensured through the structure of the boss through hole, and the corresponding damping structure is arranged, so that the working vibration of the valve is reduced, and the noise is reduced. Be provided with boss structure on the piston seat 9, the basal portion periphery cover of piston rod is equipped with annular separation blade 3, and boss structure and separation blade 3 opposite side all are provided with elasticity bradyseism ring 7, and elasticity bradyseism ring 7 overlaps in the piston rod periphery.

The elastic damping ring is sleeved on the periphery of the piston rod and is divided into two parts, one part is arranged at the baffle position of the piston rod base, the other part is arranged at the position of the boss structure of the piston seat where the piston rod extends out, so that the collision of the piston rod during working is reduced, the working noise can be reduced, the collision loss can be reduced, and the service life of the valve is prolonged.

The technical scheme that this embodiment provided has mainly optimized the installation connection structure of cylinder basal portion, is provided with the cylinder installation cavity that is used for nested fixed cylinder in the valve casing, and the one end in the cylinder installation cavity is provided with holding screw 1, installs fixed cylinder through holding screw 1. The bottom of the air cylinder is fixedly installed with one end of the valve shell through the structure of the set screw, so that the integrity of the device is optimized, and the assemblability of the device is also optimized.

The technical scheme that this embodiment provided is mainly in order to make the inside and outside UNICOM of valve casing, prevents inside pressure boost when the piston rod motion, leads to piston rod feed motion to be obstructed, is provided with through hole structure 10 on the lateral wall of one side that holds the piston rod on the valve casing. Through the design of the through hole structure, the internal and external communication can be simply realized, the effect is good, and the cost is low.

In this embodiment, as the preferred scheme, mainly optimized the installation connectivity of piston rod end, set up split type structure specially, make things convenient for the piston rod to be connected with the machinery of case subassembly inner structure to can adapt to different valve shell sizes, supplement the not enough of piston cylinder body whole accessory size through the length of extension rod 8: the piston rod comprises a piston member 2 matched with the cylinder and an extension rod 8 connected with one end of the piston member 2, and the extension rod 8 and the piston member 2 are coaxially installed and connected through shaft holes and connecting screws of the end faces.

On the basis of the above embodiments, the design of the valve core assembly is further optimized as a preferable scheme, the valve core assembly comprises a valve plate 13 and a connecting rod assembly 12, and one end of the connecting rod assembly 12 is rotatably connected with the free end of the piston rod through a pin. The valve is controlled to be opened and closed by the feeding motion of the valve plate 13 driven by the motion of the piston rod pushing the connecting rod assembly, and the valve is simple in structure and easy to control.

Although the present disclosure is described above, the scope of protection of the present disclosure is not limited thereto. Various changes and modifications may be made by one skilled in the art without departing from the spirit and scope of the disclosure, and these changes and modifications will fall within the scope of the utility model.

Claims

1. The utility model provides a pneumatic vacuum push-pull valve, its characterized in that, includes valve casing (11), pneumatic drive subassembly and case subassembly, pneumatic drive subassembly includes cylinder piston mechanism, valve casing (11) inner chamber middle part is provided with deviating from bellied piston seat (9) of case subassembly one side, the piston seat center is provided with holds the through-hole of cylinder piston mechanism's piston rod, the free end of piston rod passes the case subassembly is connected to the through-hole, pneumatic drive subassembly still include with cylinder control valve (4) of cylinder piston mechanism's cylinder UNICOM, cylinder control valve (4) through set up in two UNICOM valves (6) outside valve casing (11) with cylinder control UNICOM, cylinder control valve (4) are cylindricly, its one end with valve casing (11) installation is fixed, the axis of cylinder control valve (4) with the axis of cylinder piston mechanism is parallel.

2. The pneumatic vacuum gate valve according to claim 1, wherein a right-angle fixing piece (5) for installation connection is arranged between the cylinder control valve (4) and the valve housing (11), one end of the right-angle fixing piece (5) is attached to and fixed with the middle plate surface of the valve housing (11), and the other end of the right-angle fixing piece (5) is attached to and fixed with the side surface, close to the bottom, of the cylinder control valve (4).

3. The pneumatic vacuum gate valve according to claim 2, wherein a boss structure is arranged on the piston seat (9), an annular baffle (3) is sleeved on the periphery of the base of the piston rod, elastic shock-absorbing rings (7) are arranged on opposite sides of the boss structure and the baffle (3), and the elastic shock-absorbing rings (7) are sleeved on the periphery of the piston rod.

4. A pneumatic vacuum gate valve according to claim 3, wherein a cylinder mounting cavity for nesting and fixing the cylinder is provided in the valve housing (11), and a set screw (1) is provided at one end in the cylinder mounting cavity, and the cylinder is mounted and fixed by the set screw (1).

5. Pneumatic vacuum gate valve according to claim 4, characterized in that the valve housing (11) is provided with a through-hole structure (10) on the side wall of the side accommodating the piston rod.

6. A pneumatic vacuum gate valve according to claim 4, wherein the piston rod comprises a piston member (2) cooperating with the cylinder, and an extension rod (8) connected to one end of the piston member (2), the extension rod (8) and the piston member (2) being coaxially mounted and connected by shaft holes and connecting screws of the respective end faces.

7. A pneumatic vacuum gate valve according to claim 6, wherein the valve cartridge assembly comprises a valve plate (13) and a linkage assembly (12), one end of the linkage assembly (12) being rotatably connected to the free end of the piston rod by a pin.