CN217422296U - Flange connected chemical pipeline check valve - Google Patents
Flange connected chemical pipeline check valve Download PDFInfo
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- CN217422296U CN217422296U CN202221557399.XU CN202221557399U CN217422296U CN 217422296 U CN217422296 U CN 217422296U CN 202221557399 U CN202221557399 U CN 202221557399U CN 217422296 U CN217422296 U CN 217422296U
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Abstract
The utility model belongs to the technical field of check valves, in particular to a flange-connected chemical pipeline check valve, a lifting assembly is arranged between a sealing valve clack and a valve cover, the lifting assembly comprises a movable sleeve welded on the upper surface of the sealing valve clack and a positioning sleeve welded on the lower surface of the valve cover, the upper end of the movable sleeve is slidably sleeved outside the positioning sleeve, and an inner spring part in a compression state is arranged inside the movable sleeve and the positioning sleeve; connect through lifting unit between sealed valve clack and the valve gap to be convenient for sealed valve clack carries out the shutoff to the middle part of check valve body, and lifting unit includes sealed valve clack upper surface welded movable sleeve simultaneously, and the welding is at the position sleeve of valve gap lower surface, and the telescopic upper end of activity cup joints at position sleeve's lower extreme simultaneously, and spring part in activity sleeve and the inside interior spring part that is provided with of position sleeve simultaneously, and activity sleeve and position sleeve outside are provided with outer spring part.
Description
Technical Field
The utility model belongs to the technical field of the check valve, concretely relates to flange joint's chemical pipeline check valve.
Background
The check valve is a valve whose opening and closing piece is a circular valve clack and can be operated by its self-weight and medium pressure to block back flow of medium. It belongs to the automatic valve category, also called check valve, reflux valve or isolation valve. The valve clack motion mode is divided into lifting type and swing type. The lift check valve is similar in structure to the stop valve and only lacks a valve rod that drives the valve flap. The medium flows in from the inlet end (lower side) and flows out from the outlet end (upper side). The valve is opened when the inlet pressure is greater than the sum of the weight of the flap and its flow resistance. Otherwise, the valve is closed when the medium flows backwards. Traditional check valve is when using for the lifting unit poor stability of valve clack and lift, lifting unit is difficult for reseing after by liquid lifting simultaneously, and when liquid pressure was lower relatively, liquid still can reverse through the valve clack, causes liquid to flow back, and during the valve gap installation of check valve, the sealing ring was little with valve body and valve gap area of contact, causes the not enough problem of leakproofness ability.
SUMMERY OF THE UTILITY MODEL
To solve the problems set forth in the background art described above. The utility model provides a flange joint's chemical pipeline check valve.
In order to achieve the above object, the utility model provides a following technical scheme: a flange-connected chemical pipeline check valve comprises a check valve body, a sealing valve clack arranged in the middle of the check valve body for opening and closing, a valve cover fixed on the outer surface of the middle part of the check valve body through a bolt, a lifting component is arranged between the sealing valve clack and the valve cover, the lifting component comprises a movable sleeve welded on the upper surface of the sealing valve clack and a positioning sleeve welded on the lower surface of the valve cover, the upper end of the movable sleeve is sleeved outside the positioning sleeve in a sliding way, the movable sleeve and the positioning sleeve are internally provided with inner spring parts in a compressed state, the movable sleeve and the positioning sleeve are externally provided with outer spring parts in a compressed state, and the two ends of the inner spring part and the outer spring part are welded on the surfaces of the valve cover and the sealing valve clack, and a sealing element for sealing is arranged between the movable sleeve and the positioning sleeve, and the surfaces of the check valve body and the valve cover are provided with positioning grooves for storing a third sealing ring.
As the utility model discloses a preferred technical scheme of flange joint's chemical pipeline check valve, the spacing groove that the sealing member was seted up including activity sleeve upper end internal surface and position sleeve lower extreme surface is installed at the first sealing ring that is located activity sleeve upper end spacing inslot portion, installs at the second sealing ring that is located position sleeve lower extreme spacing inslot portion, and the recess that is used for depositing lubricating oil is all offered to the outside surface of the interior side surface of first sealing ring and second sealing ring, the inside of first sealing ring and second sealing ring all is provided with the nylon rope who is used for strengthening and weaves the ring.
As the utility model discloses a preferred technical scheme of flange joint's chemical pipeline check valve, first sealing ring and second sealing ring are square annular structure, positioning sleeve and interior spring part are square nonrust steel pipe component, and first sealing ring and positioning sleeve's surface contact, second sealing ring and movable sleeve's internal surface contact.
As the utility model discloses a preferred technical scheme of flange joint's chemical pipeline check valve, first draw-in groove and second draw-in groove have been seted up on the surface of third sealing ring, the internal surface integrated into one piece of constant head tank has first snap ring and second snap ring, and just first snap ring is installed in the inside of first draw-in groove, and the inside at the second draw-in groove is installed to the second snap ring.
As the utility model discloses a preferred technical scheme of flange joint's chemical pipeline check valve, the equal integrated into one piece in both sides of third sealing ring has the connecting strip.
As the utility model discloses a preferred technical scheme of flange joint's chemical pipeline check valve, the lower part of sealed valve clack is the arc, and the upper portion of sealed valve clack is provided with heavy groove.
Compared with the prior art, the beneficial effects of the utility model are that:
1. the sealing valve clack is arranged in the middle of the check valve body and used for opening and closing, and the sealing valve clack and the valve cover are connected through the lifting assembly, so that the sealing valve clack can conveniently plug the middle of the check valve body, meanwhile, the lifting assembly comprises a movable sleeve welded on the upper surface of the sealing valve clack and a positioning sleeve welded on the lower surface of the valve cover, the upper end of the movable sleeve is sleeved at the lower end of the positioning sleeve, an inner spring part is arranged inside the movable sleeve and the positioning sleeve, an outer spring part is arranged outside the movable sleeve and the positioning sleeve, and two ends of the inner spring part and the outer spring part are respectively welded and fixed with the sealing valve clack and the valve cover, so that the sealing valve clack is compressed with the lifting assembly when being extruded by one-way liquid of the check valve body, the sealing valve clack is conveniently plugged when being extruded by the other-way liquid, and the inner spring part is matched with the outer spring part, increased the stability that the sealing valve clack removed and reset in that the check valve body is inside, be provided with between activity sleeve and the position sleeve simultaneously and be used for sealed sealing member to be convenient for activity sleeve and the inside gas tightness that keeps of position sleeve, install the third sealing ring in the constant head tank of seting up between check valve body and the valve gap simultaneously, increased the area of check valve body and valve gap and third sealing ring contact, thereby airtight between check valve body and the valve gap of being convenient for.
2. Through by the spacing groove, first sealing ring, the second sealing ring, the sealing member that ring and recess are constituteed is woven to the nylon rope, the spacing inslot that movable sleeve upper end was seted up is installed to first sealing ring simultaneously, the spacing inslot that the locating sleeve lower extreme was seted up is installed to the second sealing ring, give first sealing ring and locating sleeve's surface contact simultaneously, second sealing ring and movable sleeve's internal surface contact, thereby be convenient for movable sleeve and locating sleeve's junction carry out dual-seal through first sealing ring and second sealing ring, all be provided with the nylon rope who is used for the enhancement in first sealing ring and the second sealing ring simultaneously and weave the ring, and first sealing ring inside surface and second sealing ring outside surface all set up flutedly, thereby deposit lubricating oil in the recess of being convenient for and lubricate.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention, and together with the description serve to explain the invention and not to limit the invention. In the drawings:
fig. 1 is a schematic structural view of the present invention;
fig. 2 is a schematic structural view of the lifting assembly of the present invention;
FIG. 3 is an enlarged schematic view of the structure at A in FIG. 2;
FIG. 4 is an enlarged view of the structure at B in FIG. 1;
FIG. 5 is a schematic diagram of a three-quarter three-dimensional structure of the middle seal ring of the present invention;
in the figure: 1. a check valve body; 2. a sealing valve flap; 3. a movable sleeve; 4. a positioning sleeve; 5. an inner spring member; 6. an outer spring member; 7. a limiting groove; 8. a first seal ring; 9. a second seal ring; 10. nylon rope braiding rings; 11. a groove; 12. a valve cover; 13. positioning a groove; 14. a third seal ring; 15. a first card slot; 16. a second card slot; 17. a connecting strip; 18. a first snap ring; 19. a second snap ring.
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 work belong to the protection scope of the present invention.
Examples
Referring to fig. 1-5, the present invention provides a technical solution: a flange-connected chemical pipeline check valve comprises a check valve body 1, a sealing valve clack 2 arranged in the middle of the check valve body 1 and used for opening and closing, a valve cover 12 fixed on the outer surface of the middle of the check valve body 1 through bolts, a lifting assembly arranged between the sealing valve clack 2 and the valve cover 12 and comprising a movable sleeve 3 welded on the upper surface of the sealing valve clack 2, a positioning sleeve 4 welded on the lower surface of the valve cover 12, the upper end of the movable sleeve 3 is sleeved outside the positioning sleeve 4 in a sliding manner, an inner spring part 5 in a compression state is arranged inside the movable sleeve 3 and the positioning sleeve 4, an outer spring part 6 in a compression state is arranged outside the movable sleeve 3 and the positioning sleeve 4, two ends of the inner spring part 5 and two ends of the outer spring part 6 are both welded on the surfaces of the valve cover 12 and the sealing valve clack 2, and a sealing element used for sealing is arranged between the movable sleeve 3 and the positioning sleeve 4, the surfaces of the check valve body 1 and the valve cover 12 are both provided with a positioning groove 13 for storing a third sealing ring 14.
In the embodiment, a sealing valve clack 2 for opening and closing is arranged in the middle of a check valve body 1, and the sealing valve clack 2 is connected with a valve cover 12 through a lifting assembly, so that the sealing valve clack 2 can conveniently plug the middle of the check valve body 1, the lifting assembly comprises a movable sleeve 3 welded on the upper surface of the sealing valve clack 2 and a positioning sleeve 4 welded on the lower surface of the valve cover 12, the upper end of the movable sleeve 3 is sleeved at the lower end of the positioning sleeve 4, an inner spring part 5 is arranged inside the movable sleeve 3 and the positioning sleeve 4, an outer spring part 6 is arranged outside the movable sleeve 3 and the positioning sleeve 4, two ends of the inner spring part 5 and the outer spring part 6 are respectively welded and fixed with the sealing valve clack 2 and the valve cover 12, so that the lifting assembly is conveniently driven to compress when the sealing valve clack 2 receives the unidirectional liquid extrusion of the check valve body 1, the sealing valve clack 2 can conveniently plug the check valve body 1 when receiving the other directional liquid, and interior spring part 5 and the cooperation of outer spring part 6, the stability that sealed valve clack 2 removed and reset in that check valve body 1 is inside has been increased, be provided with between activity sleeve 3 and the position sleeve 4 simultaneously and be used for sealed sealing member, thereby be convenient for activity sleeve 3 and the inside gas tightness that keeps of position sleeve 4, install third sealing ring 14 in the constant head tank 13 of seting up between check valve body 1 and the valve gap 12 simultaneously, the area of check valve body 1 and valve gap 12 and the 14 contact of third sealing ring has been increased, thereby be convenient for airtight between check valve body 1 and the valve gap 12.
Concretely, the sealing member includes the spacing groove 7 that 3 upper end internal surfaces of activity sleeve and 4 lower extreme surfaces of position sleeve were seted up, install and be located the first sealing ring 8 of 3 upper end spacing groove 7 insides of activity sleeve, install and be located the second sealing ring 9 of 4 lower extreme spacing groove 7 insides of position sleeve, and the recess 11 that is used for depositing lubricating oil is all offered to the inboard surface of first sealing ring 8 and the outside surface of second sealing ring 9, the inside of first sealing ring 8 and second sealing ring 9 all is provided with the nylon rope who is used for strengthening and weaves ring 10, first sealing ring 8 and second sealing ring 9 are square ring structure, position sleeve 4 and interior spring part 5 are square stainless steel tube component, and the external surface contact of first sealing ring 8 and position sleeve 4, the internal surface contact of second sealing ring 9 and activity sleeve 3.
In the embodiment, through the sealing element consisting of the limiting groove 7, the first sealing ring 8, the second sealing ring 9, the nylon rope braided ring 10 and the groove 11, meanwhile, the first sealing ring 8 is arranged in a limit groove 7 arranged at the upper end of the movable sleeve 3, the second sealing ring 9 is arranged in a limit groove 7 arranged at the lower end of the positioning sleeve 4, while the first sealing ring 8 is brought into contact with the outer surface of the positioning sleeve 4, the second sealing ring 9 is brought into contact with the inner surface of the movable sleeve 3, thereby facilitating double sealing of the joint of the movable sleeve 3 and the positioning sleeve 4 by the first sealing ring 8 and the second sealing ring 9, meanwhile, nylon rope braided rings 10 for strengthening are arranged in the first sealing ring 8 and the second sealing ring 9, and the inner side surface of the first sealing ring 8 and the outer side surface of the second sealing ring 9 are both provided with grooves 11, so that lubricating oil can be conveniently stored in the grooves 11 for lubrication.
Specifically, a first clamping groove 15 and a second clamping groove 16 are formed in the surface of the third sealing ring 14, a first clamping ring 18 and a second clamping ring 19 are integrally formed on the inner surface of the positioning groove 13, the first clamping ring 18 is installed inside the first clamping groove 15, and the second clamping ring 19 is installed inside the second clamping groove 16.
Specifically, the connecting strips 17 are integrally formed on both sides of the third sealing ring 14.
Specifically, the lower part of the sealing valve clack 2 is arc-shaped, and the upper part of the sealing valve clack 2 is provided with a sink groove.
The utility model discloses a theory of operation and use flow: during assembly, the first sealing ring 8 is arranged in a limiting groove 7 formed in the upper end of the movable sleeve 3, the second sealing ring 9 is arranged in a limiting groove 7 formed in the lower end of the positioning sleeve 4, the movable sleeve 3 is sleeved outside the positioning sleeve 4, the inner spring part 5 is arranged inside the movable sleeve 3 and the positioning sleeve 4, the outer spring part 6 is arranged outside the movable sleeve 3 and the positioning sleeve 4, the lower ends of the inner spring part 5, the movable sleeve 3 and the outer spring part 6 are sequentially welded on the upper surface of the sealing valve clack 2, then the inner spring part 5, the upper ends of the positioning sleeve 4 and the outer spring part 6 are sequentially welded on the surface of the valve cover 12, the third sealing ring 14 is arranged in a positioning groove 13 formed in the surface of the check valve body 1, at the moment, the first clamping ring 18 is arranged inside the first clamping groove 15, the second clamping ring 19 is arranged inside the second clamping groove 16, the sealing valve clack 2 is arranged in the check valve body 1, and the valve cover 12 is fixed with the check valve body 1 through a bolt, at the moment, the sealing valve clack 2 blocks the check valve body 1 under the left and right sides of the lifting piece, and meanwhile, the inner spring piece 5 and the outer spring piece 6 are in a compressed state.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (6)
1. The utility model provides a flange joint's chemical pipeline check valve, includes check valve body (1), its characterized in that: the sealing valve clack (2) is arranged in the middle of the check valve body (1) and used for opening and closing, the valve cover (12) is fixed on the outer surface of the middle of the check valve body (1) through bolts, a lifting assembly is installed between the sealing valve clack (2) and the valve cover (12), the lifting assembly comprises a movable sleeve (3) welded on the upper surface of the sealing valve clack (2), a positioning sleeve (4) welded on the lower surface of the valve cover (12), the upper end of the movable sleeve (3) is sleeved outside the positioning sleeve (4) in a sliding manner, an inner spring part (5) in a compression state is installed inside the movable sleeve (3) and the positioning sleeve (4), an outer spring part (6) in a compression state is installed outside the movable sleeve (3) and the positioning sleeve (4), and the two ends of the inner spring part (5) and the outer spring part (6) are both welded on the surfaces of the valve cover (12) and the sealing valve clack (2), and a sealing element for sealing is arranged between the movable sleeve (3) and the positioning sleeve (4), and positioning grooves (13) for storing a third sealing ring (14) are formed in the surfaces of the check valve body (1) and the valve cover (12).
2. The check valve for flange-connected chemical pipelines of claim 1, wherein: the sealing member includes spacing groove (7) that activity sleeve (3) upper end internal surface and position sleeve (4) lower extreme surface were seted up, installs and is located first sealing ring (8) of activity sleeve (3) upper end spacing groove (7) inside, installs and is located second sealing ring (9) of position sleeve (4) lower extreme spacing groove (7) inside, and the inboard surface of first sealing ring (8) and the outside surface of second sealing ring (9) all offer recess (11) that are used for depositing lubricating oil, the inside of first sealing ring (8) and second sealing ring (9) all is provided with the nylon rope who is used for strengthening and weaves ring (10).
3. The check valve for flange-connected chemical pipelines of claim 2, wherein: first sealing ring (8) and second sealing ring (9) are square annular structure, positioning sleeve (4) and interior spring part (5) are square stainless steel tube component, and the surface contact of first sealing ring (8) and positioning sleeve (4), the surface contact of second sealing ring (9) and activity sleeve (3).
4. The check valve for flange-connected chemical pipelines of claim 1, wherein: first draw-in groove (15) and second draw-in groove (16) have been seted up on the surface of third sealing ring (14), the internal surface integrated into one piece of constant head tank (13) has first snap ring (18) and second snap ring (19), and installs in the inside of first draw-in groove (15) first snap ring (18), and the inside at second draw-in groove (16) is installed in second snap ring (19).
5. The check valve for flange-connected chemical pipelines of claim 4, wherein: and connecting strips (17) are integrally formed on two sides of the third sealing ring (14).
6. The check valve for flange-connected chemical pipelines of claim 1, wherein: the lower part of the sealing valve clack (2) is arc-shaped, and the upper part of the sealing valve clack (2) is provided with a sink groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221557399.XU CN217422296U (en) | 2022-06-21 | 2022-06-21 | Flange connected chemical pipeline check valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221557399.XU CN217422296U (en) | 2022-06-21 | 2022-06-21 | Flange connected chemical pipeline check valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217422296U true CN217422296U (en) | 2022-09-13 |
Family
ID=83173543
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221557399.XU Active CN217422296U (en) | 2022-06-21 | 2022-06-21 | Flange connected chemical pipeline check valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217422296U (en) |
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2022
- 2022-06-21 CN CN202221557399.XU patent/CN217422296U/en active Active
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