CN209943556U

CN209943556U - Gate valve

Info

Publication number: CN209943556U
Application number: CN201822129468.7U
Authority: CN
Inventors: 李仕军; 金小桃
Original assignee: Guangdong Sheng Boer Photoelectric Technology Co Ltd
Current assignee: Guangdong Sheng Boer Photoelectric Technology Co Ltd
Priority date: 2018-12-18
Filing date: 2018-12-18
Publication date: 2020-01-14
Anticipated expiration: 2028-12-18

Abstract

The utility model provides a push-pull valve, include: valve body, driving piece and case subassembly. Be equipped with the cavity in the valve body, the valve body has relative first curb plate and the second curb plate that sets up, and the opening has been seted up to first curb plate, opening and cavity intercommunication. The driving piece is arranged on the valve body and provided with a driving rod, and the driving piece is used for driving the valve core assembly to seal the through hole. The valve core assembly is arranged in the cavity and comprises a supporting plate, a flashboard and at least two groups of connecting rods. And a flashboard limiting wheel which is abutted against the flashboard is arranged below the flashboard. The utility model discloses push-pull valve relies on flashboard and the parallel laminating of opening to seal, and the flashboard need not the upset, and the demand space is little, stability and good reliability. In addition, because the contact area between the flashboard limiting wheel and the flashboard is small and the flashboard is in rolling friction, the flashboard limiting wheel can limit the flashboard and reduce the damage to the flashboard.

Description

Gate valve

Technical Field

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

Background

The valve commonly used in the coating production line at present is a flap valve. The flap valve adopts a swing cylinder as a drive, and is connected with the flashboard through a rotating shaft to perform opening and closing actions so as to achieve the function of isolating the atmosphere of each functional box chamber in the production line. However, the flap valve has the following defects: the radial space requirement of the rotating shaft is large, the flap valve is placed in the vacuum box chamber, the space requirement on the box body is also large, and the air extraction time is prolonged; the opening and closing of the flashboard are rotary actions, the reliability of a cooling pipeline inlet pipe is greatly influenced, and a cooling device is not arranged in a vacuum environment, so that the use of the flashboard in a heating environment is limited; in order to ensure the opening and closing accuracy of the flashboard, a buffer device is not arranged, the damage of the opening and closing action on a sealing ring of the flashboard is large, and the noise is large.

SUMMERY OF THE UTILITY MODEL

In view of the above, there is a need for a gate valve that solves the above problems.

The utility model provides a push-pull valve, include:

the valve body is internally provided with a cavity, the valve body is provided with a first side plate and a second side plate which are oppositely arranged, the first side plate is provided with a through hole, and the through hole is communicated with the cavity;

the driving piece is arranged on the valve body and is provided with a driving rod;

the valve element assembly is arranged in the cavity and comprises a supporting plate, a gate plate and at least two groups of connecting rods, the driving rod penetrates into the cavity and is fixedly connected with the supporting plate, the gate plate is positioned between the supporting plate and the first side plate, two ends of each connecting rod are respectively connected with the gate plate and the supporting plate in a rotating mode, the connecting rods extend from the supporting plate to the gate plate and incline towards the bottom of the valve body, and the driving piece is used for driving the valve element assembly to seal the through hole; and the number of the first and second groups,

the spacing round of flashboard is located in the cavity and be located the flashboard with between the bottom of valve body, be used for with the flashboard butt, the diapire of opening is located the top of the spacing round of flashboard, the spacing round of flashboard orientation or dorsad first curb plate free rotation, the flashboard certainly the top orientation of valve body the projection of the bottom of valve body is located on the spacing round of flashboard.

Preferably, the push-pull valve still includes the spacing round of backup pad, the spacing round of backup pad is located in the cavity and be located the backup pad with between the bottom of valve body, the spacing round of backup pad certainly the second curb plate orientation first curb plate and free rotation downwards, the backup pad certainly the top orientation of valve body the projection of the bottom of valve body is located the spacing round of backup pad is last, and is located the axle center of the spacing round of backup pad with between the first curb plate.

Preferably, a spring is arranged between the support plate and the gate plate, and two ends of the spring are respectively connected with the support plate and the gate plate.

Preferably, the support plate is provided with a notch for the connecting rod to move.

Preferably, the second side plate is provided with another through hole, and the other through hole is communicated with the cavity.

Preferably, the valve body comprises a valve body cover plate arranged at the top of the valve body, and the driving piece is arranged on the valve body cover plate.

Preferably, the gate valve further comprises a valve core guide assembly, the valve core guide assembly comprises a valve core guide post and a first bearing, the valve core guide post is installed on the valve body cover plate, the first bearing is fixedly connected with the valve core assembly, and the first bearing is slidably sleeved on the valve core guide post.

Preferably, the gate valve further comprises an overhaul guide assembly, the overhaul guide assembly comprises an overhaul guide post and a second bearing, the second bearing is slidably sleeved on the overhaul guide post, the overhaul guide post is fixedly connected with the valve body cover plate, the second bearing is fixedly connected with the valve body, a pull handle is further arranged on the valve body cover plate, and the pull handle is used for pulling the valve core assembly and the valve core guide assembly out of the valve body along the overhaul guide post.

Preferably, the drive member is a cylinder.

The utility model provides a push-pull valve, it includes box valve body, inserts case subassembly and the driving piece in the valve body, and the opening has been seted up to one side of valve body, and the below of flashboard is equipped with the spacing wheel of flashboard with the flashboard butt, and driving piece drive case subassembly is sealed the opening. Consequently, this push-pull valve's sealed dependence flashboard and the parallel laminating of opening, the flashboard need not the upset, and demand space is little, stability and good reliability. In addition, because the contact area between the flashboard limiting wheel and the flashboard is small and the flashboard is in rolling friction, the flashboard limiting wheel can limit the flashboard and reduce the damage to the flashboard.

Drawings

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

Fig. 1 is a schematic structural view of an embodiment of the gate valve of the present invention;

FIG. 2 is another schematic structural view of the gate valve of FIG. 1;

FIG. 3 is a schematic view of the internal structure of the gate valve shown in FIG. 1;

FIG. 4 is a simplified schematic diagram of the gate-open state of the gate of FIG. 1;

fig. 5 is a simplified schematic structural diagram of the gate valve shown in fig. 1 in a closed state.

The reference numbers illustrate:

reference numerals	Name (R)	Reference numerals	Name (R)
				1	Gate valve	10	Valve body
11	Hollow cavity	12	First side plate
				121	First port	13	Second side plate
131	Second port	14	Valve cover
				141	Pulling handle	20	Driving member
21	Driving rod	30	Valve core assembly
				31	Supporting plate	311	Gap
32	Gate plate	33	Connecting rod
				34	Spring	40	Flashboard limiting wheel
50	Supporting plate limiting wheel	60	Valve core guide assembly
				61	Valve core guide post	62	First bearing
70	Maintenance guide assembly	71	Overhaul guide post
				72	Second bearing

The objects, features and advantages of the present invention will be further described with reference to the accompanying drawings.

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 efforts belong to the protection scope of the present invention.

It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "connected" to another component, it can be directly connected to the other component or intervening components may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only.

It should be noted that, if the embodiments of the present invention are described as "first", "second", etc., the description of "first", "second", etc. is only for descriptive purposes and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

In the embodiment mentioned in the utility model, this push-pull valve is applied to in the coating film production line, of course, in other embodiments, this push-pull valve still can specifically use in other occasions, and this design is not limited to this.

The embodiment of the utility model provides a push-pull valve 1, please refer to fig. 1 to 5 and show, push-pull valve 1 includes: the valve body 10, the driver 20, the valve core assembly 30, the gate plate limiting wheel 40 and the support plate limiting wheel 50.

As shown in fig. 4 and 5, a cavity 11 is provided in the valve body 10. The valve body 10 has a first side plate 12 and a second side plate 13 disposed opposite to each other. The first side plate 12 is provided with a first through hole 121, and the first through hole 121 is communicated with the cavity 11.

The driver 20 is mounted on the valve body 10, and the driver 20 has a driving rod 21. The driving member 20 is used to drive the valve core assembly 30 to seal the first through hole 121. It will be appreciated that the drive member 20 may be any one of a pneumatic cylinder, an electric motor, a hydraulic cylinder, and the like.

Referring to fig. 3, the valve core assembly 30 is disposed in the cavity 11, and the valve core assembly 30 includes a support plate 31, a gate plate 32, and at least two sets of connecting rods 33. The driving rod 21 penetrates into the cavity 11 and is fixedly connected with the supporting plate 31 to drive the driving supporting plate 31 to move towards the bottom of the valve body 10. The shutter 32 is located between the support plate 31 and the first side plate 12. Both ends of the link 33 are rotatably connected to the shutter 32 and the support plate 31, respectively, and the link 33 extends from the support plate 31 toward the shutter 32 and is inclined toward the bottom of the valve body 10.

The gate plate limiting wheel 40 is arranged in the cavity 11 and located between the gate plate 32 and the bottom of the valve body 10 to be abutted against the gate plate 32, and the bottom wall of the first through hole 121 is located above the gate plate limiting wheel 40. The shutter limiting wheel 40 is freely rotatable toward or away from the first side plate 12, and a projection of the shutter 32 from the top of the valve body 10 toward the bottom of the valve body 10 is located on the shutter limiting wheel 40. It can be understood that, the driving rod 21 drives the supporting plate 31 to move towards the bottom of the valve body 10, and at the same time, the connecting rod 33 drives the shutter 32 to move towards the bottom of the valve body 10, and when the shutter 32 abuts against the shutter limiting wheel 40, under the thrust of the connecting rod 33 and the abutment of the shutter limiting wheel 40, the shutter 32 will continue to move towards the first through opening 121 in parallel and seal the first through opening 121. The shutter limiting wheel 40 is a driven wheel, and when the shutter 32 moves toward the first side plate 12, the shutter limiting wheel 40 rotates toward the first side plate 12 along with the shutter 32; when the shutter 32 moves away from the first side plate 12, the shutter limiting wheel 40 rotates away from the first side plate 12 along with the shutter 32. Compared with other limiting devices, the contact surface between the shutter limiting wheel 40 and the shutter 32 is small, and rolling friction exists between the shutter limiting wheel and the shutter 32, so that friction damage to the shutter 32 can be reduced.

The utility model provides a push-pull valve relies on flashboard and the parallel laminating of opening to seal, and the flashboard need not the upset, and the demand space is little, stability and good reliability. In addition, because the contact area between the flashboard limiting wheel and the flashboard is small and the flashboard is in rolling friction, the flashboard limiting wheel can limit the flashboard and reduce the damage to the flashboard.

Further, the gate valve 1 further comprises a supporting plate limiting wheel 50, and the supporting plate limiting wheel 50 is arranged in the cavity 11 and located between the supporting plate 31 and the bottom of the valve body 10. The support plate retaining wheel 50 is free to rotate downward from the second side plate 13 toward the first side plate 12. The projection of the supporting plate 31 from the top of the valve body 10 to the bottom of the valve body 10 is located on the supporting plate limiting wheel 50 and between the axis of the supporting plate limiting wheel 50 and the first side plate 12. The support plate limiting wheel 50 is a driven wheel.

It will be appreciated that when the shutter 32 seals the first through opening 121, it is subject to the reaction force F1 imparted by the first side plate 12. The reaction force F1 is transmitted to the support plate 31 through the link 33, and the support plate 31 receives a force F1 toward the second side plate 13. Drive rod 21, due to its fixed connection to support plate 31, is also subjected to force F1, causing eccentricity or damage to drive rod 21. By providing the support regulating wheel 50 to abut against the support plate 31, the reaction force F1 given to the support plate 31 when the shutter 32 seals the first through opening 121 can be cancelled, thereby preventing the driver 20 and the valve core assembly 30 from being damaged by the reaction force F1.

It should be noted that, the projection of the supporting plate 31 from the top of the valve body 10 to the bottom of the valve body 10 is located on the supporting plate limiting wheel 50 and between the axis of the supporting plate limiting wheel 50 and the first side plate 12. With this arrangement, in the process that the supporting plate 31 has a downward pressing tendency, the supporting plate limiting wheel 50 abutted against the supporting plate 31 rotates downward from the second side plate 13 toward the first side plate 12, so that the acting force F1 of the supporting plate 31 on the supporting plate 50 simultaneously gives an acting force F2 in an opposite direction to that of the supporting plate 31, and the acting force F2 is directed toward the first side plate 12 and exactly counteracts the acting force F1 given by the first side plate 12 when the shutter 32 seals the first through opening 121. In addition, compared with other limiting devices, the contact surface between the supporting plate limiting wheel 50 and the supporting plate 50 is small, and rolling friction exists between the supporting plate limiting wheel 50 and the supporting plate 50, so that friction damage to the supporting plate 31 can be reduced.

Further, as shown in fig. 3, a spring 34 is provided between the support plate 31 and the shutter 32, and both ends of the spring 34 are connected to the support plate 31 and the shutter 32, respectively. It will be appreciated that the drive rod 21 is pulled upwardly, and the gate 32 is disengaged from the first side plate 12 by the spring 34 and then moved away from the first through opening 121 with the cartridge assembly 30 in parallel therewith.

Further, as shown in fig. 1, the supporting plate 31 is opened with a notch 311 for the movement of the connecting rod 33. In this embodiment, the gate valve 1 has a plurality of sets of connecting rods 33, the connecting rods 33 are rotatably connected with the supporting plate 31, and accordingly, a plurality of notches for the movement of the connecting rods 33 are formed in the supporting plate 31 for facilitating the movement of the connecting rods 33.

Further, as shown in fig. 3 to 5, the second side plate 13 is opened with a second opening 131, and the second opening 131 is communicated with the cavity 11. It will be appreciated that if the second side plate 13 is completely sealed, then when the first port 121 is also sealed, there is a risk that gas will accumulate in the valve body 10, and when a gate valve is used in a vacuum environment, there will be a risk that the valve body will deflate into the vacuum vessel. Therefore, the second opening 131 is formed in the first side plate 12, and the gas in the valve body 10 can be discharged at any time.

Further, as shown in fig. 1, the valve body 10 includes a valve cover 14 provided on the top of the valve body 10, and the driving member 20 is mounted on the valve cover 14. It will be appreciated that the drive rod 21 will pass through the valve cover 14 into the cavity 11 and be fixedly attached to the support plate 31.

Further, the gate valve 1 further comprises a spool guide assembly 60. The spool guide assembly 60 includes a spool guide post 61 and a first bearing 62. The spool guide post 61 is mounted on the bonnet 14, the first bearing 62 is fixedly connected with the spool assembly 30, and the first bearing 62 is slidably sleeved on the spool guide post 61. Specifically, the first bearing 62 is fixedly connected with the support plate 31. As can be seen from the foregoing analysis, when the shutter 32 seals the first through hole 121, the shutter receives a reaction force imparted by the first side plate 12, and the reaction force is transmitted to the support plate 31, which may damage the driving member 20 connected to the support plate 31. By providing the spool guide assembly 60, some of the reaction forces described above can be counteracted, thereby avoiding the driver 20 from being affected by the reaction forces. In addition, the valve core guiding assembly 60 also plays a guiding role, so that the valve core assembly 30 can move linearly and smoothly.

Further, the gate valve 1 also comprises a service guide assembly 70. Service guide assembly 70 includes a service guide post 71 and a second bearing 72. The second bearing 72 is slidably sleeved on the maintenance guide column 71, the maintenance guide column 71 is fixedly connected with the valve cover 14, and the second bearing 72 is fixedly connected with the valve body 10. Specifically, both ends of the valve body 10 are provided with the service guide assembly 70. It can be understood that, when the maintenance is carried out, the whole gate valve 1 does not need to be disassembled, and only the bolt on the valve cover 14 needs to be disassembled, so that the valve core assembly 30 and the valve cover 14 can be pulled out together, and the maintenance is simple and quick.

Further, a pulling handle 141 is disposed on the bonnet 14, and the pulling handle 141 is used for pulling the valve core assembly 30 and the valve core guide assembly 60 out of the valve body 10 along the service guide column 71.

In this embodiment, the driving member 20 is a cylinder, and correspondingly, the driving rod 21 is a piston rod. It should be noted that in other embodiments, an electric motor or a hydraulic cylinder may be used as the driving member 20.

The above only be the preferred embodiment of the utility model discloses a not consequently restriction the utility model discloses a patent range, all are in the utility model discloses a conceive, utilize the equivalent structure transform of what the content was done in the description and the attached drawing, or direct/indirect application all is included in other relevant technical field the utility model discloses a patent protection within range.

Claims

1. A gate valve, comprising:

2. The gate valve according to claim 1, wherein a spring is disposed between the support plate and the gate, and both ends of the spring are connected to the support plate and the gate, respectively.

3. The gate valve of claim 1, wherein the support plate defines a gap for movement of the connecting rod.

4. The gate valve of claim 1, wherein another port is defined in said second side plate, said another port communicating with said cavity.

5. A gate valve as defined in claim 1, wherein said valve body includes a valve body cover plate disposed at a top portion of said valve body, said drive member being mounted to said valve body cover plate.

6. The gate valve according to claim 5, further comprising a spool guide assembly, wherein the spool guide assembly includes a spool guide post and a first bearing, the spool guide post is mounted on the valve body cover plate, the first bearing is fixedly connected with the spool assembly, and the first bearing is slidably sleeved on the spool guide post.

7. The gate valve according to claim 6, further comprising an overhaul guide assembly, wherein the overhaul guide assembly comprises an overhaul guide post and a second bearing, the second bearing is slidably sleeved on the overhaul guide post, the overhaul guide post is fixedly connected with the valve body cover plate, the second bearing is fixedly connected with the valve body, and a pull handle is further arranged on the valve body cover plate and used for pulling the valve core assembly and the valve core guide assembly out of the valve body along the overhaul guide post.

8. A gate valve as claimed in any one of claims 1 to 7, wherein said drive member is an air cylinder.