CN214662133U

CN214662133U - Opening and closing action mechanism of gate valve

Info

Publication number: CN214662133U
Application number: CN202120389305.1U
Authority: CN
Inventors: 罗智斌; 陈宇雄; 陈景凤; 陈宇珑; 邓鹏憧
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-02-22
Filing date: 2021-02-22
Publication date: 2021-11-09
Anticipated expiration: 2031-02-22

Abstract

The utility model discloses a switch actuating mechanism of gate valve, including the valve body, two communicating material mouths have been seted up respectively to the both sides of valve body, be provided with the valve rod in the valve body and two valve plates that are used for sealing up the material mouth, the top of valve body is connected with the pneumatic mechanism who is used for driving the valve rod along its axial displacement, the drive end of pneumatic mechanism passes through the valve rod with the valve plate and is connected, the contact seal side that the valve body is close to the valve plate is provided with the difference stop band that is used for changing the friction mode between valve plate and the valve body inboard, the material of difference stop band is different with the material of valve body, the difference stop band is length and the axial parallel arrangement of valve rod, a part of valve plate and difference stop band contact; the utility model discloses a set up the different difference stop bands of material and valve body in the valve body inboard, changed the friction mode between valve plate and the valve body, replaced complete sliding friction by the rolling friction of certain range, reduced the wear rate of valve plate, had the advantage that valve plate life is high and the leakproofness is good.

Description

Opening and closing action mechanism of gate valve

Technical Field

The utility model relates to the technical field of valves, more specifically say, it relates to a switch action mechanism of gate valve.

Background

The valve belongs to relatively universal equipment in the field of mechanical equipment, and is low in cost, relatively reliable, wide in application range and wide in application in the field of mechanical equipment; the pneumatic gate valve is characterized in that a piston in a cylinder is pushed by pressure origin, and the piston moves to drive a valve plate to open or close the valve; however, because the valve plate of the pneumatic gate valve needs to bear a certain pressure to maintain a certain sealing property, and the pressure of the valve plate on the valve body is not changed, the valve plate is easily worn or stuck under the action of long-term high frequency and the uninterrupted flushing of powder particles, the sealing property is poor, if the wear of the valve plate exceeds the minimum use standard, the valve plate needs to be replaced and maintained, the service life of the whole valve plate is short, and the maintenance cost of the equipment is high.

SUMMERY OF THE UTILITY MODEL

Not enough to prior art exists, the utility model aims to provide a switch action mechanism of gate valve has changed the friction mode between valve plate and the valve body, has replaced complete sliding friction by the rolling friction of certain range, has reduced the wear rate of valve plate, has valve plate life height and the good advantage of leakproofness.

In order to achieve the above purpose, the utility model provides a following technical scheme:

the utility model provides a switch actuating mechanism of gate valve, includes the valve body, communicating two material mouths have been seted up respectively to the both sides of valve body, be provided with valve rod and two in the valve body and be used for sealing the valve plate of material mouth, the top of valve body is connected with and is used for the drive the valve rod is along its axial displacement's pneumatic mechanism, pneumatic mechanism's drive end passes through with the valve plate the valve rod is connected, the valve body is close to the contact seal side of valve plate is provided with and is used for changing the difference stop band of friction mode between valve plate and the valve body inboard, the material of difference stop band with the material of valve body is different, the difference stop band be length with the axial direction parallel arrangement of valve rod, the valve plate marginal partly with difference stop band contact.

Further setting: the poor stop band is close to the one end of material mouth is provided with the buffering portion that is used for preventing poor stop band damage, buffering portion is for being towards being close to the direction convergent setting of material mouth.

Further setting: two blockage cleaning ports for cleaning accumulated powder in the valve body are symmetrically arranged above the valve body, one blockage cleaning port is connected with an external air blowing device, and the other blockage cleaning port is connected with a cleaning pipeline.

Further setting: the valve rod is close to the one end of material mouth is connected with the support, be provided with compression spring between the two valve plates, the compression spring both ends are connected with left briquetting and the right briquetting that is the setting of T type respectively, the horizontal end of left side briquetting and right briquetting respectively with two the bottom butt of valve plate, the perpendicular end of left side briquetting and right briquetting is located in the compression spring, the confession has been seted up to the perpendicular end of left side briquetting the directional guide way that slides of the perpendicular end of right side briquetting, the confession has been seted up in the middle of the support the logical groove that compression spring, left briquetting and right briquetting placed.

Further setting: the pneumatic mechanism comprises an air cylinder and a connecting seat, the air cylinder is connected with the upper end of the valve body through the connecting seat, sealing filler is arranged at the joint of the connecting seat and the valve body, and the sealing filler is sleeved on the peripheral surface of the valve rod.

To sum up, the utility model realizes the function of opening or closing the material port by the valve plate through the valve body, the valve rod and the pneumatic mechanism; through a difference stop band made of a material different from that of the inner side of the valve body, complete sliding is replaced by rolling in a certain range in the opening and closing movement process of the valve plate, so that the friction mode between the valve plate and the middle valve body is changed, and the effects of reducing the wear rate of the valve plate, prolonging the service life of the valve plate and improving the overall sealing performance are further realized; the length of the differential resistance band is parallel to the axial direction of the valve rod, so that the valve plate is kept in good contact with the contact surface of the differential resistance band all the time in the process of moving along the axial direction of the valve rod, the effect of ensuring the uniform rolling of the valve plate is achieved, and the effect of further prolonging the service life of the valve plate is further achieved; the utility model discloses change the friction mode between valve plate and the valve body inboard, reduced the wear rate of valve plate, had the advantage that valve plate life is high and the leakproofness is good.

Drawings

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

fig. 2 is a partial cross-sectional view of an embodiment of the invention;

FIG. 3 is a schematic view of a partial structure of a valve body according to an embodiment of the present invention;

FIG. 4 is an enlarged view of a portion of FIG. 2;

fig. 5 is a sectional view of the valve body according to the embodiment of the present invention.

In the figure: 1. a valve body; 2. a material port; 3. a valve stem; 4. a valve plate; 5. a pneumatic mechanism; 6. a differential stop band; 7. a buffer section; 8. clearing the blockage; 9. a support; 10. a compression spring; 11. pressing the left block; 12. a right pressing block; 13. a guide groove; 14. a through groove; 15. a cylinder; 16. a connecting seat; 17. sealing and filling; B. a valve plate open position; C. a valve plate closed position.

Detailed Description

In order to explain the technical content, the objects and the effects of the present invention in detail, the following description is made with reference to the accompanying drawings in combination with the embodiments. It should be noted that the words "upper" and "lower" used in the following description refer to the direction in fig. 2, and the words "bottom" and "top" refer to the direction towards the geometric center of the specific component, and the utility model discloses a "poor stop band" refers to embedding in the valve body inboard, and the material is different with the material of valve body, makes the valve plate appear the resistance difference in the resistance between the in-process of switching and the valve body.

The utility model discloses the most crucial design lies in: by arranging the difference stop band 6 which is different from the material and is arranged on the inner side of the valve body 1 close to the material port 2, complete sliding is replaced by rolling with a certain amplitude in the opening and closing moving process of the valve plate 4, and the effects of reducing the wear rate of the valve plate 4, prolonging the service life of the valve plate 4 and improving the overall sealing performance are realized because the rolling friction is smaller than the sliding friction; the length of the differential resistance band 6 is parallel to the axial direction of the valve rod 3, so that the contact surface of the valve plate 4 and the differential resistance band 6 is kept in good contact all the time in the process of moving the valve plate 4 along the axial direction of the valve rod 3, the function of ensuring the valve plate 4 to roll uniformly is achieved, and the service life of the valve plate 4 is further prolonged; the utility model discloses change the friction mode between valve plate 4 and the 1 inboards of valve body, reduced valve plate 4's wear rate, had the advantage that 4 life height of valve plate and leakproofness are good.

Referring to fig. 1 to 5, an opening and closing mechanism of a gate valve includes a valve body 1, two communicating material ports 2 are respectively formed on two sides of the valve body 1, a valve rod 3 and two valve plates 4 for sealing the material ports 2 are arranged in the valve body 1, a pneumatic mechanism 5 for driving the valve rod 3 to move along an axial direction of the valve rod is connected above the valve body 1, a driving end of the pneumatic mechanism 5 is connected with the valve plates 4 through the valve rod 3, a differential stop band 6 for changing a friction mode between the valve plate 4 and an inner side of the valve body 1 is arranged on a contact sealing side of the valve body 1 close to the valve plate 4, the material of the differential stop band 6 is different from that of the valve body 1, the length of the differential stop band 6 is parallel to an axial direction of the valve rod 3, and a part of an edge of the valve plate 4 is in contact with the differential stop band 6.

As can be seen from the above description, when the valve needs to be opened or closed, first, the valve rod 3 is driven by the pneumatic mechanism 5 to move in the axial direction of the valve rod 3 toward or away from the material port 2, so as to realize the function of the valve plate 4 to open or close the material port 2; through the difference stop band 6 which is made of a different material from the valve body 1, in the moving process of the valve plate 4, the resistance of the valve plate 4 on the valve body 1 is different from the resistance of the valve plate 4 on the difference stop band 6, so that rolling with a certain amplitude is generated to replace complete sliding, and the rolling friction is smaller than the sliding friction, so that the friction form between the valve plate 4 and the valve body 1 is changed, the wear rate of the valve plate 4 and the valve body 1 is reduced, the service lives of the valve plate 4 and the valve body 1 are prolonged, and the integral sealing performance is improved; through being length and the axial direction parallel arrangement of valve rod 3 with poor stop band 6, make valve plate 4 keep in contact well with the contact surface of poor stop band 6 always along the in-process of 3 axial displacement of valve rod, play the even effect of guaranteeing that valve plate 4 rolls, and then realize further extension valve plate 4 and with valve body 1 life's effect.

Further: one end that poor stop band 6 is close to material mouth 2 is provided with the buffer 7 that is used for preventing poor stop band 6 to damage, and buffer 7 is for being the direction convergent setting of being close to material mouth 2.

From the above description, when the valve plate 4 needs to be opened, the buffer portion 7 disposed at one end of the differential stop band 6 close to the material port 2 prevents the valve plate 4 from falling off the differential stop band 6 due to sudden impact on the differential stop band 6 in the process of starting movement, so as to perform transition buffering on the initial contact between the valve plate 4 and the differential stop band 6, and further protect the differential stop band 6.

Further: two blockage cleaning ports 8 used for cleaning residual powder in the valve body 1 are symmetrically arranged above the valve body 1, one blockage cleaning port 8 is connected with an external air blowing device, and the other blockage cleaning port 8 is connected with a cleaning pipeline.

From the above description, through setting up two clear stifled mouths 8 in valve body 1 top, connect in the outside air-blowing device of a clear stifled mouth 8 with the remaining powder of valve body 1 internalization blow to another clear stifled mouth 8, discharge through connecting in the clearance pipeline of another clear stifled mouth 8, guarantee that valve plate 4 switch is smooth and easy, compare and only set up a clear stifled mouth 8, play the effect that improves the clearance efficiency of the remaining powder in the valve body 1.

Further: the one end that valve rod 3 is close to material mouth 2 is connected with support 9, be provided with compression spring 10 between two valve plates 4, compression spring 10 both ends are connected with left briquetting 11 and the right briquetting 12 that is the setting of T type respectively, the horizontal end of left briquetting 11 and right briquetting 12 respectively with the bottom butt of two valve plates 4, the perpendicular end of left briquetting 11 and right briquetting 12 is located compression spring 10, the guide way 13 that supplies the perpendicular end orientation of right briquetting 12 to slide is seted up to the perpendicular end of left briquetting 11, offer in the middle of the support 9 and supply compression spring 10, the logical groove 14 that left briquetting 11 and right briquetting 12 placed.

As can be seen from the above description, when the valve plate 4 is worn, the valve plate 4 is tightly attached to the inner side surface of the valve body 1 all the time through the left pressing block 11, the right pressing block 12 and the compression spring 10, so as to ensure a good sealing effect at the material port 2 and play a role in ensuring that the valve plate 4 is subjected to a certain pressure; the vertical end of the left pressing block 11 slides in the guide groove 13, so that the compression spring 10 is prevented from deviating in the process of compressing the adjusting valve plate 4 to influence the pressure adjusting stability of the compression spring 10, and the service life of the valve plate 4 is further prolonged.

Further: the pneumatic mechanism 5 comprises an air cylinder 15 and a connecting seat 16, the air cylinder 15 is connected with the upper end of the valve body 1 through the connecting seat 16, a sealing filler 17 is arranged at the connecting position of the connecting seat 16 and the valve body 1, and the sealing filler 17 is sleeved on the peripheral surface of the valve rod 3.

As can be seen from the above description, when the valve needs to be opened, the push rod of the cylinder 15 contracts to drive the valve rod 3 and the valve plate 4 to move in the direction away from the material port 2, so as to realize the function of automatically opening the valve; through connecting seat 16 and sealing packing 17, prevent to cause because of the dust from getting into in the valve body 1 from the gap between connecting seat 16 and the valve body 1 upper end, and cause the removal that influences valve rod 3, play the effect that further improves the leakproofness of valve body 1.

Referring to fig. 1 to 5, the present invention provides an embodiment:

a switching action mechanism of a gate valve is shown in figures 1 and 2 and comprises a valve body 1, wherein two communicated material ports 2 are respectively formed in two sides of the valve body 1, a valve rod 3 and two valve plates 4 used for sealing the material ports 2 are arranged in the valve body 1, a pneumatic mechanism 5 used for driving the valve rod 3 to move along the axial direction of the valve rod is connected above the valve body 1, and the driving end of the pneumatic mechanism 5 is connected with the valve plates 4 through the valve rod 3;

as shown in fig. 3 and 5, the contact sealing side of the valve body 1 close to the valve plate 4 is provided with a differential stop band 6 for changing the friction mode between the valve plate 4 and the inner side of the valve body 1, and the material of the differential stop band 6 is different from that of the valve body 1; the length of the differential stop band 6 is parallel to the axial direction of the valve rod 3, and one part of the edge of the valve plate 4 is in contact with the differential stop band 6; the one end that poor stop band 6 is close to material mouth 2 is provided with the buffering portion 7 that is used for preventing poor stop band 6 to damage, and buffering portion 7 sets up for being towards the direction convergent that is close to material mouth 2, and poor stop band 6 is located between valve plate open position B and the valve plate closed position C.

As shown in fig. 1, two blockage cleaning ports 8 for cleaning residual powder in the valve body 1 are symmetrically arranged above the valve body 1, one blockage cleaning port 8 is connected with an external air blowing device (not shown in the figure, like the whole text), and the other blockage cleaning port 8 is connected with a cleaning pipeline (not shown in the figure, like the whole text).

As shown in fig. 2 and 4, one end of the valve rod 3 close to the material port 2 is connected with a support 9, a compression spring 10 is arranged between the two valve plates 4, and two ends of the compression spring 10 are respectively connected with a left pressing block 11 and a right pressing block 12 which are arranged in a T shape; the transverse ends of the left pressing block 11 and the right pressing block 12 are respectively abutted against the bottom ends of the two valve plates 4, the vertical ends of the left pressing block 11 and the right pressing block 12 are positioned in the compression spring 10, and the vertical end of the left pressing block 11 is provided with a guide groove 13 for the vertical end of the right pressing block 12 to directionally slide; the middle of the support 9 is provided with a through groove 14 for placing the compression spring 10, the left pressing block 11 and the right pressing block 12.

As shown in fig. 1 and 2, the pneumatic mechanism 5 includes a cylinder 15 and a connecting seat 16, the cylinder 15 is connected with the upper end of the valve body 1 through the connecting seat 16, a sealing packing 17 is disposed at the connecting position of the connecting seat 16 and the valve body 1, and the sealing packing 17 is sleeved on the outer circumferential surface of the valve rod 3.

In summary, compared with the prior art, the valve plate 4 of the utility model has the advantages of long service life and good sealing performance; the valve plate 4 is used for opening or closing the material port 2 through the valve body 1, the valve rod 3 and the pneumatic mechanism 5; by adopting the differential band 6 made of different materials with the inner side of the valve body 1, complete sliding is replaced by rolling in a certain range in the opening and closing movement process of the valve plate 4, so that the friction mode between the valve plate 4 and the middle valve body 1 is changed, and the effects of reducing the wear rate of the valve plate 4, prolonging the service life of the valve plate 4 and improving the overall sealing performance are realized; through being length and the axial direction parallel arrangement of valve rod 3 with poor stop band 6, make valve plate 4 keep in contact well with the contact surface of poor stop band 6 always along the in-process of 3 axial displacement of valve rod, play the even effect of guaranteeing that valve plate 4 rolls, and then realize further extension valve plate 4 life's effect.

It is above only the utility model discloses a preferred embodiment, the utility model discloses a scope of protection does not only confine above-mentioned embodiment, the all belongs to the utility model discloses a technical scheme under the thinking all belongs to the utility model discloses a scope of protection. It should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.

Claims

1. A switch action mechanism of a gate valve is characterized in that: the valve comprises a valve body, communicating two material mouths have been seted up respectively to the both sides of valve body, be provided with the valve rod in the valve body and two are used for sealing the valve plate of material mouth, the top of valve body is connected with and is used for the drive the pneumatic mechanism of its axial displacement is followed to the valve rod, pneumatic mechanism's drive end passes through with the valve plate the valve rod is connected, the valve body is close to the contact seal side of valve plate is provided with and is used for changing the difference stop band of friction mode between valve plate and the valve body inboard, the material of difference stop band with the material of valve body is different, the difference stop band be length with the axial direction parallel arrangement of valve rod, the valve plate marginal partly with difference stop band contact.

2. The opening/closing operation mechanism of a gate valve according to claim 1, wherein: the poor stop band is close to the one end of material mouth is provided with the buffering portion that is used for preventing poor stop band damage, buffering portion is for being towards being close to the direction convergent setting of material mouth.

3. The opening/closing operation mechanism of a gate valve according to claim 1, wherein: two blockage cleaning ports for cleaning accumulated powder in the valve body are symmetrically arranged above the valve body, one blockage cleaning port is connected with an external air blowing device, and the other blockage cleaning port is connected with a cleaning pipeline.

4. The opening/closing operation mechanism of a gate valve according to claim 1, wherein: the valve rod is close to the one end of material mouth is connected with the support, be provided with compression spring between the two valve plates, the compression spring both ends are connected with left briquetting and the right briquetting that is the setting of T type respectively, the horizontal end of left side briquetting and right briquetting respectively with two the bottom butt of valve plate, the perpendicular end of left side briquetting and right briquetting is located in the compression spring, the confession has been seted up to the perpendicular end of left side briquetting the directional guide way that slides of the perpendicular end of right side briquetting, the confession has been seted up in the middle of the support the logical groove that compression spring, left briquetting and right briquetting placed.

5. The opening/closing operation mechanism of a gate valve according to claim 1, wherein: the pneumatic mechanism comprises an air cylinder and a connecting seat, the air cylinder is connected with the upper end of the valve body through the connecting seat, sealing filler is arranged at the joint of the connecting seat and the valve body, and the sealing filler is sleeved on the peripheral surface of the valve rod.