CN213954351U - Water supply valve for high-pressure boiler - Google Patents
Water supply valve for high-pressure boiler Download PDFInfo
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- CN213954351U CN213954351U CN202022468364.6U CN202022468364U CN213954351U CN 213954351 U CN213954351 U CN 213954351U CN 202022468364 U CN202022468364 U CN 202022468364U CN 213954351 U CN213954351 U CN 213954351U
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Abstract
The utility model relates to a water feeding valve of a high-pressure boiler, which comprises a valve body, a valve cover arranged at the upper end of the valve body, a valve seat arranged inside the lower end of the valve body, a main body arranged inside the valve body and a valve rod vertically arranged in the valve cover, connected with the main body and capable of moving up and down; the main body comprises a first sleeve, a second sleeve, a piston, a valve core, an end cover, a pull rod and a spring; the first sleeve is vertically arranged between the valve body and the valve cover, the valve core is arranged in the first sleeve and the second sleeve and can slide up and down, and the lower end of the piston is matched with the opening at the upper end of the valve seat; the end cover is embedded and fixed at an opening at the upper end of the first sleeve; the utility model discloses a piston can realize the slip of mutually supporting at the lower extreme of case and case, has both realized double-deck sealed in order effectively to promote sealed effect, has solved the great problem of valve rod driving resistance that arouses again because the unbalanced force of high pressure medium, and then makes opening and close of valve laborsaving operation to made things convenient for the use.
Description
Technical Field
The utility model relates to a high-pressure boiler feed valve.
Background
The high-pressure boiler is a boiler with the steam gauge pressure higher than 5.88MPa and lower than 9.81MPa, when the high-pressure boiler works, after a large amount of liquid water is evaporated to form steam, the liquid water needs to be continuously supplemented through the water inlet pipe, water feeding valves for controlling the on-off of water flow are arranged between the water inlet pipe and the boiler, and due to the fact that the pressure difference between the water inlet pipe and the boiler is large, the driving resistance of a valve rod connected with a valve core is large due to the fact that the valve core of an existing water feeding valve is under the influence of unbalanced pressure of a high-pressure medium, operation is laborious, use is inconvenient, in addition, the sealing effect is poor, and further improvement is needed.
SUMMERY OF THE UTILITY MODEL
To the current situation of above-mentioned prior art, the utility model aims to solve the technical problem that a high pressure boiler feed water valve that the great problem of valve rod driving resistance that arouses again because the unbalanced force of high pressure medium has been solved in order to facilitate the use to the sealed effect of existing effect promotion is provided.
The utility model provides a technical scheme that above-mentioned technical problem adopted does: a high-pressure boiler feed valve comprises a valve body, a valve cover arranged at the upper end of the valve body, a valve seat arranged inside the lower end of the valve body, a main body arranged inside the valve body and a valve rod vertically arranged in the valve cover, connected with the main body and capable of moving up and down, and is characterized in that the main body comprises a first sleeve, a second sleeve, a piston, a valve core, an end cover, a pull rod and a spring; the valve comprises a valve body, a valve cover, a first sleeve, a second sleeve, a valve core, a piston and a valve seat, wherein the first sleeve is vertically arranged between the valve body and the valve cover, the lower end of the valve cover is provided with an upper cavity, the upper end of the first sleeve is inserted and fixed in the upper cavity, the lower end of the first sleeve is embedded and fixed in the upper end of the valve body, the second sleeve is vertically embedded and arranged in the valve body and communicated with the first sleeve, the inner part of the second sleeve forms a lower cavity, the lower end of the first sleeve is hermetically connected with the upper end of the second sleeve, the lower end of the second sleeve is hermetically connected with the upper end of the valve seat, the valve core is arranged in the first sleeve and the second sleeve and can slide up and down, a limiting cavity is formed on the inner wall of the lower end of the first sleeve, correspondingly, a step part is outwards formed on the outer side of the lower end of the valve core, the step part is arranged in the limiting cavity, the lower end of the valve core is provided with a movable cavity, and the piston is arranged in the movable cavity and can slide up and down, the lower end of the piston is matched with the opening at the upper end of the valve seat; the end cover is embedded and fixed at an opening at the upper end of the first sleeve, the pull rods comprise a plurality of pull rods, the pull rods are vertically inserted and arranged in the piston and distributed at equal angles along the circumferential direction, the upper end of each pull rod is upwards inserted and fixed in the valve core, and a spring is sleeved on each pull rod; each spring is arranged between the piston and the valve core, and a plurality of first pressure equalizing holes in the vertical direction are formed in the valve core; a plurality of second pressure equalizing holes in the vertical direction are formed in the piston; the lower end of the valve rod is downwards inserted and fixed in the valve core.
Preferably, the lower end of the piston is provided with a plurality of first counter bores, the number and the position of the first counter bores are matched with those of the pull rods, and the lower end of each pull rod is movably embedded into the first counter bores.
Preferably, the bottom surface of the movable cavity is provided with a plurality of second counter bores, the number and the position of the second counter bores are matched with those of the springs, the upper ends of the springs are respectively inserted into the second counter bores, and the lower end of each spring is tightly propped against the upper end of the piston.
Preferably, a sealing filler is further embedded in the valve cover, and the sealing filler is sleeved outside the valve rod in a sealing manner.
Preferably, a sealing ring is further embedded outside the upper end of the piston in a sleeved mode.
Compared with the prior art, the utility model has the advantages of: the utility model discloses a piston can realize the slip of mutually supporting at the lower extreme of case and case, has both realized double-deck sealed in order effectively to promote sealed effect, has solved the great problem of valve rod driving resistance that arouses again because the unbalanced force of high pressure medium, and then makes opening and close of valve laborsaving operation to made things convenient for the use.
Drawings
Fig. 1 is a sectional structure view of the present invention.
Detailed Description
Unless defined otherwise, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which the invention belongs. The use of "first," "second," and similar terms in the description herein do not denote any order, quantity, or importance, but rather the terms are used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item listed before the word covers the element or item listed after the word and its equivalents, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
To maintain the following description of the embodiments of the present invention clear and concise, detailed descriptions of well-known functions and components may be omitted.
As shown in fig. 1, a water feeding valve for a high pressure boiler comprises a valve body 1, a valve cover 3 arranged at the upper end of the valve body 1, a valve seat 2 arranged inside the lower end of the valve body 1, a main body arranged inside the valve body 1, and a valve rod 8 vertically arranged in the valve cover 3, connected with the main body and capable of moving up and down; the main body comprises a first sleeve 4, a second sleeve 11, a piston 5, a valve core 10, an end cover 9, a pull rod 6 and a spring 7; the first sleeve 4 is vertically arranged between the valve body 1 and the valve cover 3, the lower end of the valve cover 3 is provided with an upper cavity 31, the upper end of the first sleeve 4 is inserted and fixed in the upper cavity 31, the lower end of the first sleeve 4 is embedded and fixed in the upper end of the valve body 1, the second sleeve 11 is vertically embedded and arranged in the valve body 1 and is mutually communicated with the first sleeve 4, the lower end of the first sleeve 4 is hermetically connected at the upper end of the second sleeve 11, the lower end of the second sleeve 11 is hermetically connected at the upper end of the valve seat 2, a lower cavity 111 is formed inside the second sleeve 11, the valve core 10 is arranged in the first sleeve 4 and the second sleeve 11 and can slide up and down, the inner wall of the lower end of the first sleeve 4 is provided with a limiting cavity 41, correspondingly, the outer side of the lower end of the valve core 10 is outwards provided with a step part 1004, the step part 1004 is arranged in the limiting cavity 41, the lower end of the valve core 10 is provided with a movable cavity 1003, the piston 5 is arranged in the movable cavity 1003 and can slide up and down, the lower end of the piston 5 is matched with the opening at the upper end of the valve seat 2; the end cover 9 is embedded and fixed at an opening at the upper end of the first sleeve 4, the pull rods 6 comprise a plurality of pull rods 6, the pull rods 6 are vertically inserted and arranged in the piston 5 and distributed at equal angles along the circumferential direction, the upper end of each pull rod 6 is upwards inserted and fixed in the valve core 10, and a spring 7 is sleeved on each pull rod 6; each spring 7 is arranged between the piston 5 and the valve core 10, a plurality of first pressure equalizing holes 1001 in the vertical direction are formed in the valve core 10, and a plurality of second pressure equalizing holes 52 in the vertical direction are formed in the piston 5; the lower end of the valve rod 8 is inserted and fixed downwards in the valve core 10.
The lower end of the piston 5 is provided with a plurality of first counter bores 51, the number and the position of the first counter bores 51 are matched with those of the pull rods 6, and the lower end of each pull rod 6 is movably embedded into the plurality of first counter bores 51.
A plurality of second counter bores 1002 are formed in the bottom surface of the movable cavity 1003, the number and the positions of the second counter bores 1002 are matched with those of the springs 7, the upper ends of the springs 7 are inserted into the second counter bores 1002 respectively, and the lower end of each spring 7 is tightly pressed against the upper end of the piston 5.
A sealing filler 13 is also embedded in the valve cover 3, and the sealing filler 13 is sleeved outside the valve rod 8 in a sealing manner; a sealing ring 12 is also sleeved outside the upper end of the piston 5.
The working principle is as follows: when the valve is closed, the valve core 10 is slightly pressed downwards through the valve rod 8, the piston 5 is driven to move downwards together by virtue of the pull rods 6 and the springs 7, the lower end of the piston 5 is firstly contacted with the opening at the upper end of the valve seat 2 and then is finally sealed and attached to realize a first seal, then the valve core 10 continues to move downwards under the drive of the valve rod 8 to compress each spring 7, and finally the lower end of the valve core is sealed and attached to the upper end of the valve seat 2 to realize a second seal; when the valve is opened, the valve core 10 is slightly pulled upwards through the valve rod 8, the piston 5 is kept still, high-pressure water flow is introduced into the upper cavity 31 through the first pressure equalizing holes 1001 and the second pressure equalizing holes 52, the pressures of the upper cavity 31 and the lower cavity 111 are kept balanced all the time, after the valve core 10 moves upwards for a certain distance, the piston 5 gradually moves upwards under the driving of the pull rods 6 to be away from the opening at the upper end of the valve seat 2, and then the high-pressure water flow enters the lower cavity 111 from the side face of the valve body 1 and realizes the adjustment of the water inflow of the boiler along with the change of the opening.
The utility model discloses a piston 5 can realize the slip of mutually supporting at the lower extreme of case 10 and case 10, has both realized double-deck sealed in order effectively to promote sealed effect, has still solved the great problem of valve rod driving resistance that arouses simultaneously because the unbalanced force of high pressure medium, and then makes opening and close the laborsaving operation of valve to the use has been made things convenient for.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that various changes in the embodiments and modifications thereof may be made, and equivalents may be substituted for elements thereof; such modifications and substitutions do not depart from the spirit and scope of the present invention in its corresponding aspects.
Claims (5)
1. A high-pressure boiler feed valve comprises a valve body, a valve cover arranged at the upper end of the valve body, a valve seat arranged inside the lower end of the valve body, a main body arranged inside the valve body and a valve rod vertically arranged in the valve cover, connected with the main body and capable of moving up and down, and is characterized in that the main body comprises a first sleeve, a second sleeve, a piston, a valve core, an end cover, a pull rod and a spring; the valve comprises a valve body, a valve cover, a first sleeve, a second sleeve, a valve core, a piston and a valve seat, wherein the first sleeve is vertically arranged between the valve body and the valve cover, the lower end of the valve cover is provided with an upper cavity, the upper end of the first sleeve is inserted and fixed in the upper cavity, the lower end of the first sleeve is embedded and fixed in the upper end of the valve body, the second sleeve is vertically embedded and arranged in the valve body and communicated with the first sleeve, the inner part of the second sleeve forms a lower cavity, the lower end of the first sleeve is hermetically connected with the upper end of the second sleeve, the lower end of the second sleeve is hermetically connected with the upper end of the valve seat, the valve core is arranged in the first sleeve and the second sleeve and can slide up and down, a limiting cavity is formed on the inner wall of the lower end of the first sleeve, correspondingly, a step part is outwards formed on the outer side of the lower end of the valve core, the step part is arranged in the limiting cavity, the lower end of the valve core is provided with a movable cavity, and the piston is arranged in the movable cavity and can slide up and down, the lower end of the piston is matched with the opening at the upper end of the valve seat; the end cover is embedded and fixed at an opening at the upper end of the first sleeve, the pull rods comprise a plurality of pull rods, the pull rods are vertically inserted and arranged in the piston and distributed at equal angles along the circumferential direction, the upper end of each pull rod is upwards inserted and fixed in the valve core, and a spring is sleeved on each pull rod; each spring is arranged between the piston and the valve core, and a plurality of first pressure equalizing holes in the vertical direction are formed in the valve core; a plurality of second pressure equalizing holes in the vertical direction are formed in the piston; the lower end of the valve rod is downwards inserted and fixed in the valve core.
2. The water feeding valve of the high-pressure boiler as recited in claim 1, wherein the lower end of the piston is provided with a plurality of first counter bores, the number and the position of the first counter bores are matched with the number and the position of the pull rods, and the lower end of each pull rod is movably embedded in the first counter bores.
3. The water feeding valve of the high-pressure boiler as recited in claim 1, wherein a plurality of second counter bores are formed in the bottom surface of the movable chamber, the number and the positions of the second counter bores are matched with those of the springs, the upper ends of the plurality of springs are respectively inserted into the plurality of second counter bores, and the lower end of each spring is tightly pressed against the upper end of the piston.
4. The water feeding valve of the high-pressure boiler as claimed in claim 1, wherein the valve cover is embedded with a sealing filler, and the sealing filler is sleeved outside the valve rod in a sealing manner.
5. The feedwater valve of claim 1, wherein a sealing ring is further inserted into the piston outside the upper end thereof.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022468364.6U CN213954351U (en) | 2020-10-30 | 2020-10-30 | Water supply valve for high-pressure boiler |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022468364.6U CN213954351U (en) | 2020-10-30 | 2020-10-30 | Water supply valve for high-pressure boiler |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213954351U true CN213954351U (en) | 2021-08-13 |
Family
ID=77206054
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022468364.6U Active CN213954351U (en) | 2020-10-30 | 2020-10-30 | Water supply valve for high-pressure boiler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213954351U (en) |
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2020
- 2020-10-30 CN CN202022468364.6U patent/CN213954351U/en active Active
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