CN213512117U - Balance structure of flat stop valve - Google Patents
Balance structure of flat stop valve Download PDFInfo
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- CN213512117U CN213512117U CN202022699890.3U CN202022699890U CN213512117U CN 213512117 U CN213512117 U CN 213512117U CN 202022699890 U CN202022699890 U CN 202022699890U CN 213512117 U CN213512117 U CN 213512117U
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- 210000004907 gland Anatomy 0.000 claims abstract description 55
- 238000005192 partition Methods 0.000 claims abstract description 34
- 238000009434 installation Methods 0.000 claims abstract description 4
- 238000003825 pressing Methods 0.000 claims abstract description 3
- 230000000149 penetrating effect Effects 0.000 claims description 10
- 238000007789 sealing Methods 0.000 claims description 10
- 230000001681 protective effect Effects 0.000 claims description 7
- 230000009471 action Effects 0.000 claims description 4
- 238000000034 method Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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Abstract
The utility model discloses a balance structure of a flat plate type stop valve, which comprises an installation panel, a gland, a locking nut, a valve body, a valve rod and a hand wheel; an air cavity is arranged in the valve body, a partition plate is arranged in the air cavity, and a vent hole is formed in the middle of the partition plate; a pressure plate is arranged between the valve body and the gland; a balance screw plug is arranged in the air cavity of the valve body; the balance screw plug is provided with a guide groove, the valve is connected with a guide rod, and the guide rod is connected with the balance screw plug in a sliding fit manner; a return spring is arranged between the valve and the balance screw plug; one side of the valve close to the partition plate is also provided with a valve nozzle, the valve nozzle is provided with a valve hole, a balance hole is arranged on the guide rod, and the balance hole is communicated with the valve hole of the valve; and one end of the valve rod is provided with an ejector rod, and the ejector rod penetrates through the pressing plate and then extends into the air inlet cavity. The utility model discloses difficult wearing and tearing, stability is good, the maintenance of being more convenient for, and increase of service life can reduce use cost greatly.
Description
Technical Field
The utility model relates to a respirator detects technical field, especially relates to a balanced structure of flat stop valve that respirator detector was used.
Background
The respirator detector is a device for debugging and detecting main technical parameters of a primary pressure reducing valve of a respirator. The current respirator detector mainly comprises a frame, an air inlet end, a filter, a high-pressure air source stop valve, a medium-pressure reducing valve, an air source pressure gauge, a medium-pressure gauge, a medium-pressure stop valve, a tested product mounting seat, a low-pressure stop valve, a low-pressure gauge, a flowmeter and the like. Referring to fig. 1, the existing stop valves (a high-pressure gas source stop valve, a medium-pressure stop valve, and a low-pressure stop valve) mainly include a valve body 001, a valve 002, a support nut 003, a lock nut 004, a valve rod 005, and a hand wheel 006, and when the open state is changed into the closed state, the hand wheel 006 is rotated, and a thread pair on the valve is driven to rotate by the valve rod 005 to close the valve 002; the operator can not accurately control the tightening torque, so that the valve pad on the valve is easily stressed greatly and abraded, further failure is caused, and faults occur. When the stop valve is changed from a closed state to an open state, the valve is easy to fail due to the fact that the friction resistance of the valve thread pair is large and abrasion is easy to form due to the axial stress of high-pressure (medium-pressure and low-pressure) media at the valve nozzle to the valve thread pair. And when valve pad on the valve need be changed because of wearing and tearing, need disassemble all spare parts and can maintain, if valve department screw thread pair wearing and tearing can lead to whole valve body to scrap, greatly reduced stop valve's life, maintainability is poor for use cost increases.
SUMMERY OF THE UTILITY MODEL
The aforesaid is not enough to prior art exists, the utility model discloses a solve current stop valve easy wear and tear, became invalid, the fault rate is high, and the maintenance is inconvenient, the life section, the problem that use cost is high provides a balanced structure of flat stop valve, difficult wearing and tearing, and stability is good, the maintenance of being more convenient for, increase of service life greatly, reduction use cost.
In order to solve the technical problem, the utility model discloses a technical scheme is like this: a balance structure of a flat plate type stop valve comprises an installation panel, a gland, a locking nut, a valve body, a valve rod and a hand wheel; the mounting panel is sleeved on the gland and is tightly pressed on the gland through a locking nut; the gland is provided with a stepped screw hole penetrating through two ends of the gland; one end of the valve rod is fixedly connected with the hand wheel, and the other end of the valve rod extends into the gland from the small-diameter section of the stepped screw hole and is connected with the small-diameter section of the stepped screw hole in a threaded fit manner; the valve body is internally provided with an air cavity penetrating through two ends of the valve body, one end of the valve body extends into the gland from the large-diameter section of the stepped screw hole and is in threaded fit connection with the large-diameter section of the stepped screw hole, and an air inlet joint and an air outlet joint are arranged on two sides of the valve body; the method is characterized in that: a partition board is arranged in the air cavity of the valve body, the partition board divides the air cavity into two parts, and the middle part of the partition board is provided with a vent hole; one side of the partition plate, which is close to the gland, is provided with an air outlet cavity, the other side of the partition plate is provided with an air outlet cavity, the air inlet joint is communicated with the air inlet cavity, and the air outlet joint is communicated with the air outlet cavity; a pressing plate is arranged between one end of the valve body, which extends into the gland, and is pressed in the gland by the valve body, and seals one end of the air cavity, which is positioned in the gland;
a balance screw plug is arranged at one end of the air cavity of the valve body, which is far away from the gland, and the balance screw plug is in threaded fit connection with the valve body; the balance screw plug is provided with a guide groove, and the guide groove extends from the middle part of one end of the balance screw plug, which is close to the partition plate, to the other end of the balance screw plug; the valve is arranged in the air inlet cavity, one side of the valve, which is close to the balance screw plug, is connected with a guide rod, one end of the guide rod is connected with the valve, and the other end of the guide rod extends into the guide groove and is connected with the balance screw plug in a sliding fit manner; a return spring is arranged between the valve and the balance screw plug, the return spring is sleeved on the guide rod, the valve is tightly attached to the partition plate under the action of the return spring and seals the vent hole, and a balance cavity is formed between one end of the guide rod, which is far away from the valve, and the balance screw plug; a valve nozzle is further arranged on one side of the valve close to the partition plate, and when the valve is tightly attached to the partition plate, the valve nozzle extends into the vent hole or the air outlet cavity; the valve nozzle is provided with a valve hole penetrating through the valve, the guide rod is provided with a balance hole penetrating through two ends of the guide rod, one end of the balance hole is communicated with the valve hole of the valve, and the other end of the balance hole is communicated with the balance cavity;
an ejector rod is arranged at one end of the valve rod, which is far away from the hand wheel, one end of the ejector rod is connected with the valve rod, and the other end of the ejector rod penetrates through the pressure plate and then extends into the air inlet cavity and is connected with the pressure plate in a sliding fit manner; when the valve rod is driven to rotate by the hand wheel, the ejector rod can move along the axial direction of the ejector rod and can push the valve to move, so that the vent hole is opened.
Further, the ejector rod is connected with the valve rod through a bearing.
Furthermore, a plurality of through holes are formed around the side wall of one end, far away from the valve, of the valve nozzle, and the through holes are communicated with a valve hole of the valve nozzle.
Further, a protective cover is further arranged at the end of the small-diameter section of the stepped screw hole of the gland, and the protective cover is sleeved on the valve rod and is connected with the gland in a threaded fit mode.
Furthermore, first sealing rings are arranged between the balance screw plug and the side wall of the valve body and between the guide rod and the balance screw plug.
Furthermore, a guide sleeve is also arranged in the air inlet cavity, the guide sleeve is tightly attached to the air cavity of the valve body, and a space is reserved between the guide sleeve and the partition plate; the middle part of the guide sleeve is provided with a guide hole, and the ejector rod penetrates through the guide hole and is connected with the guide sleeve in a sliding fit manner.
And further, second sealing rings are arranged between the guide sleeve and the side wall of the valve body and between the ejector rod and the guide sleeve.
Compared with the prior art, the utility model has the advantages of as follows:
1. the power that the valve was closed is provided by reset spring, and the moment that the operator unscrewed the production is irrelevant, consequently, in the use, the sealed pad of valve is difficult for wearing and tearing, therefore is difficult for becoming invalid, makes the stability of whole stop valve better, and the reliability is higher, can effectively prolong the life of whole stop valve.
2. Set up balanced chamber in the valve body to when the valve was closed, balanced chamber was linked together with going out the gas cavity and giving vent to anger the joint, and like this, valve mouth department medium does not have axial stress to the valve and exists, consequently, the vice difficult wearing and tearing of valve rod department screw thread, difficult inefficacy make the stability of whole stop valve better, and the reliability is higher, can effectively prolong the life of whole stop valve.
3. When the valve is damaged, the sealing gasket on the valve (can be replaced) by disassembling the balance screw plug, so that the valve is more convenient and quicker to maintain and has better maintainability; the use cost of the stop valve can be greatly reduced.
Drawings
Fig. 1 is a schematic view of a shut-off valve of the prior art.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is an enlarged view of a portion a of fig. 2.
In fig. 2 and 3: the valve comprises a mounting panel 1, a gland 2, a gland 3, a locking nut 4, a valve body 5, a valve 6, a valve rod 7, a hand wheel 8, an air inlet joint 9, an air outlet joint 10, a partition plate 11, an air vent hole 12, a pressure plate 13, a balance screw plug 14, a guide rod 15, a reset spring 16, a balance cavity 17, a valve nozzle 17, a valve hole 18, a balance hole 19, an ejector rod 20, a through hole 21, a protective cover 22 and a guide sleeve 23.
Detailed Description
The present invention will be further explained with reference to the drawings and examples.
Example (b): referring to fig. 2 and 3, the balance structure of the flat stop valve comprises an installation panel 1, a gland 2, a locking nut 3, a valve body 4, a valve 5, a valve rod 6 and a hand wheel 7. As shown, the gland 2 is shown in a vertical configuration with an upper outer diameter smaller than a lower outer diameter. The mounting panel 1 is sleeved on the upper part of the gland 2 and is tightly pressed on the gland 2 through a locking nut 3; the locking nut 3 is sleeved on the small-diameter section of the gland 2, is connected with the gland 2 in a threaded fit mode, and compresses the mounting panel 1 on the gland 2. The gland 2 is provided with a step screw hole which penetrates through the upper end and the lower end of the gland, and the diameter of the upper part of the step screw hole is smaller than that of the lower part of the step screw hole. The valve rod 6 is vertically arranged, the upper end of the valve rod is fixedly connected with the hand wheel 7, and the lower end of the valve rod extends into the gland 2 from the small-diameter section (upper end) of the stepped screw hole and is connected with the small-diameter section of the stepped screw hole in a threaded fit mode. In implementation, a protective cover 22 is further arranged at the end part of the small-diameter section of the stepped screw hole of the gland 2, and the protective cover 22 is sleeved on the valve rod 6 and is in threaded fit connection with the gland 2; the gland 2 and the parts inside the gland can be better protected.
The valve body 4 is also vertically arranged, an air cavity penetrating through the upper end and the lower end of the valve body is formed in the valve body 4, and the upper end of the valve body 4 extends into the gland 2 from the large-diameter section (the lower end) of the stepped screw hole and is connected with the large-diameter section of the stepped screw hole in a threaded fit mode. And an air inlet joint 8 and an air outlet joint 9 are arranged on two sides of the valve body 4.
A clapboard 10 is arranged in the air cavity of the valve body 4, and the clapboard 10 divides the air cavity into an upper part and a lower part; a vent hole 11 is opened in the middle of the partition board 10. Wherein, one side (the upper side of the partition plate 10) of the partition plate 10 close to the gland 2 forms an air outlet cavity, the other side (the lower side of the partition plate 10) forms an air outlet cavity, the air inlet joint 8 is communicated with the air inlet cavity, and the air outlet joint 9 is communicated with the air outlet cavity. A pressure plate 12 is horizontally arranged between one end (upper end) of the valve body 4 extending into the gland 2 and the gland 2, the pressure plate 12 is pressed in the gland 2 by the valve body 4, and the end (upper end) of the air cavity positioned in the gland 2 is sealed.
And a balance screw plug 13 is arranged at one end (lower end) of the air cavity of the valve body 4 far away from the gland 2, and the balance screw plug 13 is connected with the valve body 4 in a thread fit manner. The balance screw plug 13 is provided with a guide groove which extends from the middle of one end (upper end) of the balance screw plug 13 close to the partition plate 10 to the other end (lower end) of the balance screw plug 13 close to the other end (lower end) of the balance screw plug 13. The valve 5 is arranged in the air inlet cavity and is positioned between the partition plate 10 and the balance screw plug 13; one side (lower side) of the balance screw plug 13 is connected with a guide rod 14 which is vertically arranged, the upper end of the guide rod 14 is connected with the valve 5, and the lower end of the guide rod extends into the guide groove and is connected with the balance screw plug 13 in a sliding fit manner. A return spring 15 is arranged between the lower side of the valve 5 and the upper end of the balance screw plug 13, the return spring 15 is sleeved on the guide rod 14, the valve 5 is tightly attached to the partition plate 10 under the action of the return spring 15, the vent hole 11 is sealed, and a balance cavity 16 is formed between the lower end of the guide rod 14, far away from the valve 5, and the bottom of the guide groove of the balance screw plug 13. One side (upper side) of the valve 5 close to the partition board 10 is also vertically provided with a valve nozzle 17, when the valve 5 is tightly attached to the partition board 10, the valve nozzle 17 extends into the vent hole 11 or the air outlet cavity, wherein the outer diameter of the valve nozzle 17 is smaller than the diameter of the vent hole 11. The valve mouth 17 is internally provided with a valve hole 18 which vertically penetrates through the valve 5; the guide rod 14 is provided with a balance hole 19 penetrating through two ends thereof, one end of the balance hole 19 is communicated with the valve hole 18 of the valve 5, and the other end is communicated with the balance cavity 16. In implementation, a plurality of through holes 21 are formed around the side wall of one end, away from the valve 5, of the valve nozzle 17, and the through holes 21 are communicated with the valve hole 18 of the valve nozzle 17; thus, when the upper end of the valve hole 18 is closed, the balance cavity 16 can be communicated with the air outlet cavity (air outlet joint 9) through the through hole 21. First sealing rings are arranged between the balance screw plug 13 and the side wall of the valve body 4 and between the guide rod 14 and the balance screw plug 13; thereby effectively improving the sealing effect of the whole valve body 4.
An ejector rod 20 is vertically arranged at one end (lower end) of the valve rod 6, which is far away from the hand wheel 7, the upper end of the ejector rod 20 is connected with the valve rod 6, the lower end of the ejector rod 20 penetrates through the pressure plate 12 and then extends into the air inlet cavity and is connected with the pressure plate 12 in a sliding fit mode, and the diameter of the ejector rod 20 is larger than that of the valve hole 18 and smaller than that of the vent hole 11. A guide sleeve 23 is also arranged in the air inlet cavity, the guide sleeve 23 is tightly attached to the air cavity of the valve body 4, and a space is reserved between the guide sleeve 23 and the partition plate 10; the middle part of the guide sleeve 23 is provided with a guide hole, and the mandril 20 passes through the guide hole and is connected with the guide sleeve 23 in a sliding fit manner. Therefore, the stability of the ejector rod 20 in the moving process can be further ensured, and the ejector rod 20 is prevented from shaking. And second sealing rings are arranged between the guide sleeve 23 and the side wall of the valve body 4 and between the mandril 20 and the guide sleeve 23, so that the sealing effect of the whole valve body 4 is better. When the hand wheel 7 drives the valve rod 6 to rotate, the ejector rod 20 can move along the axial direction of the valve rod and can push the valve 5 to move, so that the vent hole 11 is opened. In specific implementation, the ejector rod 20 is connected with the valve rod 6 through a bearing, a bearing positioning groove is formed in the lower end of the valve rod 6, the bearing is installed in the bearing positioning groove, and the upper end of the valve rod 6 is connected with the bearing; thus, the valve rod 6 is in running fit with the ejector rod 20, when the valve rod 6 rotates, the valve rod 6 moves up and down, and the ejector rod 20 only moves up and down without rotating, so that the movement stability of the ejector rod 20 is better.
In actual course of working, for making the holistic structural rationality of stop valve better, stability is higher, gland 2, valve rod 6, valve body 4, ejector pin 20, air vent 11 and ejector pin 20 set up with the axial lead.
In the utility model, when the stop valve is switched from the open state to the closed state, the hand wheel 7 is rotated, so that the hand wheel 7 drives the valve rod 6 to move upwards, and then the valve rod 6 drives the ejector rod 20 to move upwards; when the lower end of the mandril 20 is separated from the valve nozzle 17, the valve 5 closes the vent hole 11 under the action of the return spring 15; wherein, the power that valve 5 closed is provided by reset spring 15, and the moment that the operator unscrewed the production is irrelevant, consequently, in the use, the sealed pad of valve 5 is difficult for wearing and tearing, therefore is difficult for becoming invalid, makes the stability of whole stop valve better, and the reliability is higher, can effectively prolong the life of whole stop valve.
When the stop valve is switched from a closed state to an open state, the hand wheel 7 is rotated, the hand wheel 7 drives the valve rod 6 to move downwards, and then the valve rod 6 drives the ejector rod 20 to move downwards; after the valve rod 6 contacts the valve mouth 17, the valve mouth 17 pushes the valve 5 to move downwards until the valve 5 is opened. Owing to set up balanced chamber 16 in valve body 4 to when valve 5 closed, balanced chamber 16 with go out the air cavity and give vent to anger and connect 9 and be linked together, like this, valve mouth 17 department medium can not produce axial stress to valve 5, consequently, valve rod 6 department screw thread pair (be between valve rod 6 and gland 2 promptly) be difficult for wearing and tearing, be difficult for becoming invalid, make the stability of whole stop valve better, the reliability is higher, can effectively prolong the life of whole stop valve.
In addition, when the valve 5 is damaged, the balance screw plug 13 is disassembled, and the valve 5 (the sealing gasket on the valve) can be replaced, so that the valve is more convenient and quicker to maintain and has better maintainability; the use cost of the stop valve can be greatly reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the technical solutions, and those skilled in the art should understand that those modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions, and all should be covered in the scope of the claims of the present invention.
Claims (7)
1. A balance structure of a flat plate type stop valve comprises an installation panel, a gland, a locking nut, a valve body, a valve rod and a hand wheel; the mounting panel is sleeved on the gland and is tightly pressed on the gland through a locking nut; the gland is provided with a stepped screw hole penetrating through two ends of the gland; one end of the valve rod is fixedly connected with the hand wheel, and the other end of the valve rod extends into the gland from the small-diameter section of the stepped screw hole and is connected with the small-diameter section of the stepped screw hole in a threaded fit manner; the valve body is internally provided with an air cavity penetrating through two ends of the valve body, one end of the valve body extends into the gland from the large-diameter section of the stepped screw hole and is in threaded fit connection with the large-diameter section of the stepped screw hole, and an air inlet joint and an air outlet joint are arranged on two sides of the valve body; the method is characterized in that: a partition board is arranged in the air cavity of the valve body, the partition board divides the air cavity into two parts, and the middle part of the partition board is provided with a vent hole; one side of the partition plate, which is close to the gland, is provided with an air outlet cavity, the other side of the partition plate is provided with an air outlet cavity, the air inlet joint is communicated with the air inlet cavity, and the air outlet joint is communicated with the air outlet cavity; a pressing plate is arranged between one end of the valve body, which extends into the gland, and is pressed in the gland by the valve body, and seals one end of the air cavity, which is positioned in the gland;
a balance screw plug is arranged at one end of the air cavity of the valve body, which is far away from the gland, and the balance screw plug is in threaded fit connection with the valve body; the balance screw plug is provided with a guide groove, and the guide groove extends from the middle part of one end of the balance screw plug, which is close to the partition plate, to the other end of the balance screw plug; the valve is arranged in the air inlet cavity, one side of the valve, which is close to the balance screw plug, is connected with a guide rod, one end of the guide rod is connected with the valve, and the other end of the guide rod extends into the guide groove and is connected with the balance screw plug in a sliding fit manner; a return spring is arranged between the valve and the balance screw plug, the return spring is sleeved on the guide rod, the valve is tightly attached to the partition plate under the action of the return spring and seals the vent hole, and a balance cavity is formed between one end of the guide rod, which is far away from the valve, and the balance screw plug; a valve nozzle is further arranged on one side of the valve close to the partition plate, and when the valve is tightly attached to the partition plate, the valve nozzle extends into the vent hole or the air outlet cavity; the valve nozzle is provided with a valve hole penetrating through the valve, the guide rod is provided with a balance hole penetrating through two ends of the guide rod, one end of the balance hole is communicated with the valve hole of the valve, and the other end of the balance hole is communicated with the balance cavity;
an ejector rod is arranged at one end of the valve rod, which is far away from the hand wheel, one end of the ejector rod is connected with the valve rod, and the other end of the ejector rod penetrates through the pressure plate and then extends into the air inlet cavity and is connected with the pressure plate in a sliding fit manner; when the valve rod is driven to rotate by the hand wheel, the ejector rod can move along the axial direction of the ejector rod and can push the valve to move, so that the vent hole is opened.
2. The balance structure of a flat plate type stop valve according to claim 1, wherein: the ejector rod is connected with the valve rod through a bearing.
3. The balance structure of a flat plate type stop valve according to claim 1, wherein: and a plurality of through holes are formed around the side wall of one end, far away from the valve, of the valve nozzle, and the through holes are communicated with a valve hole of the valve nozzle.
4. The balance structure of a flat plate type stop valve according to claim 1, wherein: the end part of the small-diameter section of the stepped screw hole of the gland is also provided with a protective cover, and the protective cover is sleeved on the valve rod and is connected with the gland in a threaded fit manner.
5. The balance structure of a flat plate type stop valve according to claim 1, wherein: first sealing rings are arranged between the balance screw plug and the side wall of the valve body and between the guide rod and the balance screw plug.
6. The balance structure of a flat plate type stop valve according to claim 1, wherein: a guide sleeve is also arranged in the air inlet cavity, the guide sleeve is tightly attached to the air cavity of the valve body, and a space is reserved between the guide sleeve and the partition plate; the middle part of the guide sleeve is provided with a guide hole, and the ejector rod penetrates through the guide hole and is connected with the guide sleeve in a sliding fit manner.
7. The balance structure of a flat plate type stop valve according to claim 6, wherein: and second sealing rings are arranged between the guide sleeve and the side wall of the valve body and between the ejector rod and the guide sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022699890.3U CN213512117U (en) | 2020-11-19 | 2020-11-19 | Balance structure of flat stop valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022699890.3U CN213512117U (en) | 2020-11-19 | 2020-11-19 | Balance structure of flat stop valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213512117U true CN213512117U (en) | 2021-06-22 |
Family
ID=76424735
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022699890.3U Expired - Fee Related CN213512117U (en) | 2020-11-19 | 2020-11-19 | Balance structure of flat stop valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213512117U (en) |
-
2020
- 2020-11-19 CN CN202022699890.3U patent/CN213512117U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20210622 |