CN112696506A

CN112696506A - Low-temperature valve with convenient opening and closing structure for liquid nitrogen storage equipment

Info

Publication number: CN112696506A
Application number: CN202110001719.7A
Authority: CN
Inventors: 李红
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-01-04
Filing date: 2021-01-04
Publication date: 2021-04-23

Abstract

The invention relates to the technical field of low-temperature valves, in particular to a low-temperature valve with a convenient opening and closing structure for liquid nitrogen storage equipment, which comprises a valve seat, wherein a first connecting seat is fixed at one end of the valve seat through a bolt, a second connecting seat is fixed at the other end of the valve seat through a bolt, a valve core assembly is arranged in the valve seat and comprises a first hemispherical block and a second hemispherical block, the first hemispherical block and the second hemispherical block are vertically embedded, two sides of the first hemispherical block and two sides of the second hemispherical block are fixed through bolts, a whole spherical block is attached to the inner wall of the first hemispherical block, one end of the whole spherical block, which is far away from the first hemispherical block, is abutted against the inner wall of the second hemispherical block, the interior of the whole spherical block is hollow, and the pore diameters of two sides of the whole spherical block are the same as those of the first hemispherical block and the second hemispherical block. The invention is convenient for quickly opening and closing the valve and simultaneously is convenient for controlling the precision of opening and closing the valve.

Description

Low-temperature valve with convenient opening and closing structure for liquid nitrogen storage equipment

Technical Field

The invention relates to the technical field of low-temperature valves, in particular to a low-temperature valve with a convenient opening and closing structure for liquid nitrogen storage equipment.

Background

Liquid nitrogen is liquid nitrogen, the temperature of liquid nitrogen is very low, in industry, liquid nitrogen is obtained by air fractionation, air is firstly purified and then liquefied in a pressurizing and cooling environment, and the liquid nitrogen is separated by means of different boiling points of components in the air, so that the use methods of the liquid nitrogen are many, and the liquid nitrogen is related to the medical and industrial fields.

Because the liquid nitrogen is at the pressurization, the refrigerated environment is liquefied, therefore the liquid nitrogen is adorned in can bearing highly compressed container, the valve that control liquid nitrogen discharged needs high pressure resistant and low temperature resistant, the sealing member of low temperature valve is that low temperature resistant material is made, consequently low temperature resistant more than traditional valve, however current low temperature valve plays closed mechanism and generally opens and shuts through rotary control, need rotate the passageway that shelters from the valve pipe with the case, realize that the valve is closed or opened, close and open the girth that all need to rotate half case, it is slow to open and close speed, some low temperature valves that the leakproofness required height even, need rotate the girth of several case, just can reach the effect of opening, can't be fast convenient open and close, consequently need to design a utensil liquid nitrogen storage equipment and solve above-mentioned problem with the low temperature valve that has convenient structure of opening and close urgently.

Disclosure of Invention

The invention provides a low-temperature valve with a convenient opening and closing structure for liquid nitrogen storage equipment, which solves the problems that the opening effect can be achieved only by rotating the circumferences of a plurality of valve cores, and the opening and closing cannot be performed quickly and conveniently.

In order to achieve the purpose, the invention provides the following technical scheme: a low-temperature valve with a convenient opening and closing structure for liquid nitrogen storage equipment comprises a valve seat, wherein one end of the valve seat is fixedly provided with a first connecting seat through a bolt, the other end of the valve seat is fixedly provided with a second connecting seat through a bolt, a valve core assembly is arranged inside the valve seat and comprises a first hemispherical block and a second hemispherical block, the first hemispherical block and the second hemispherical block are vertically embedded, both sides of the first hemispherical block and the second hemispherical block are fixed through bolts, the inner wall of the first hemispherical block is attached with a whole ball block, one end of the whole ball block, which is far away from the first hemispherical block, is abutted against the inner wall of the second hemispherical block, the inside of the whole ball block is hollowed, the aperture of both sides of the whole ball block is the same as the aperture of the first hemispherical block and the aperture of the second hemispherical block, one end of the whole ball block is fixedly connected with a connecting pile through threads, and one end of the connecting pile, which is far away from the whole ball block, is rotatably connected with a sealing seat through a bearing, the first hemispherical block is rotatably connected with the sealing seat, the sealing seat is fixedly connected with the valve seat through a bolt, one end, deviating from the connecting pile, of the whole spherical block is fixedly provided with a valve rod through a thread, the outer surface of the valve rod is sleeved with a valve sleeve, the valve sleeve is fixedly connected with the second hemispherical block through a thread, one end, deviating from the second hemispherical block, of the valve sleeve is sleeved with a first bevel gear, one end, deviating from the first bevel gear, of the valve rod is sleeved with a second bevel gear, the outer surface of the second bevel gear is meshed with a third bevel gear, one end, deviating from the second bevel gear, of the third bevel gear is meshed with the first bevel gear, one end, deviating from the second bevel gear, of the third bevel gear is fixedly provided with a first connecting shaft, the outer surface of the valve seat is sleeved with a shell, the first connecting shaft is rotatably connected with the inner wall of the shell through a bearing, and the outer surface of the, divide steering gear to include the actuating lever, the actuating lever passes through the bearing and is connected with the shell rotation, first driving gear and second driving gear have been cup jointed to the surface of actuating lever, the one end that the actuating lever deviates from the second driving gear is fixed with the hand wheel, first driven gear and second driven gear have been cup jointed to the surface of first connecting axle, and second driving gear and first driven gear meshing.

Preferably, one end of the valve seat, which is far away from the shell, is provided with two groups of connecting frames, and the two groups of connecting frames are respectively fixed on the first connecting seat and the second connecting seat.

Preferably, the outer surface of the first connecting seat is provided with a fixing hole, and a second spring is arranged in the fixing hole.

Preferably, the surface butt of first hemisphere piece has the second sealing ring, the surface butt of second sealing ring has sealed the pad, and sealed the pad and the inner wall of disk seat is inconsistent, the second spring is contradicted with sealed the pad, the inner structure of second connecting seat is the same with the inner structure of first connecting seat.

Preferably, the outer surface cover of valve barrel is equipped with the sealing washer, the sealing washer is contradicted with the inner wall of disk seat.

Preferably, the outer surface of the valve sleeve close to the sealing ring is sleeved with a first sealing ring, the first sealing ring is rotatably connected with the valve sleeve through a bearing, and the first sealing ring is fixedly connected with the outer surface of the valve seat through a bolt.

Preferably, the outer fixed surface of shell has stop gear, stop gear includes the sleeve, the sleeve passes through the screw and is connected fixedly with the shell, telescopic inside telescopic connection has the spacer pin, and telescopic inside is provided with first spring, the both ends of first spring are contradicted with spacer pin and telescopic inner wall respectively.

Preferably, the one end that the spacer pin deviates from the sleeve is provided with the spacing groove, the spacing groove is seted up on the surface of actuating lever, spacer pin and spacing groove block, the quantity of spacing groove is two sets of, and two sets of spacing groove is separated by the interval and is equal with the interval of being separated by first driving gear and second driving gear.

Compared with the prior art, the invention provides the low-temperature valve with the convenient opening and closing structure for the liquid nitrogen storage equipment, and the low-temperature valve has the following beneficial effects.

The low-temperature valve with the convenient opening and closing structure for the liquid nitrogen storage equipment adopts a double-layer valve core structure, a whole ball block is abutted against a first hemisphere block and a second hemisphere block, a valve rod is connected and fixed with the whole ball block, a second hemisphere block is connected and fixed with a valve sleeve, a first bevel gear and a second bevel gear are fixed on the valve rod and the valve sleeve respectively, the first bevel gear and the second bevel gear are meshed with a third bevel gear, the first bevel gear and the second bevel gear can be driven to rotate forwards and backwards through the rotation of the third bevel gear, the valve rod and the valve sleeve are driven to drive the second hemisphere block and the whole ball block to rotate forwards and backwards, the original opening and closing process of the valve to be opened and closed is directly shortened by half, the second driving gear is meshed with a first driven gear, the second driving gear is larger than the first driven gear, and the process required to rotate is further reduced, the effect of being convenient for open and close the valve quickly is achieved.

Drawings

FIG. 1 is a schematic front view of the structure of the present invention;

FIG. 2 is a schematic cross-sectional elevation view of the structure of the present invention;

FIG. 3 is a schematic side view of the structure of the present invention;

FIG. 4 is a schematic cross-sectional front view of the structure of the steering mechanism of FIG. 2 according to the present invention;

FIG. 5 is a schematic sectional front view of the spacing mechanism of FIG. 2 according to the present invention;

fig. 6 is a side view of the first connecting seat of fig. 2 according to the present invention.

In the figure: 1. a valve seat; 2. a first connecting seat; 3. a second connecting seat; 4. a connecting frame; 5. a valve core assembly; 501. a first hemispherical block; 502. a second hemispherical block; 503. arranging a ball block; 6. connecting piles; 7. a seal seat; 8. a valve stem; 9. a valve housing; 10. a seal ring; 11. a first bevel gear; 12. a second bevel gear; 13. a third bevel gear; 14. a first connecting shaft; 15. a rudder splitting mechanism; 1501. a drive rod; 1502. a hand wheel; 1503. a first drive gear; 1504. a second driving gear; 1505. a first driven gear; 1506. a second driven gear; 1507. a limiting groove; 16. a housing; 17. a first seal ring; 18. a limiting mechanism; 1801. a sleeve; 1802. a first spring; 1803. a spacing pin; 19. a gasket; 20. a second seal ring; 21. a fixing hole; 22. a second spring.

Detailed Description

The technical solutions in the novel embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the novel embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the novel embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the novel concept, are within the scope of the novel concept of the present invention.

As shown in fig. 1-6, an embodiment of the invention provides a low temperature valve with a convenient opening and closing structure for a liquid nitrogen storage device, which comprises a valve seat 1, one end of the valve seat 1 is fixed with a first connecting seat 2 through a bolt, the other end of the valve seat 1 is fixed with a second connecting seat 3 through a bolt, a valve core assembly 5 is arranged inside the valve seat 1, the valve core assembly 5 comprises a first hemispherical block 501 and a second hemispherical block 502, the first hemispherical block 501 and the second hemispherical block 502 are vertically embedded, both sides of the first hemispherical block 501 and the second hemispherical block 502 are fixed through bolts, an inner wall of the first hemispherical block 501 is attached with a whole spherical block 503, one end of the whole spherical block 503, which is far away from the first hemispherical block 501, is abutted against an inner wall of the second hemispherical block 502, the inside of the whole spherical block 503 is hollowed, and both side apertures of the whole spherical block 503 are the same as the apertures of the first hemispherical block 501 and the second hemispherical block 502, the one end of whole ball piece 503 is through screw thread fixedly connected with connecting pile 6, the one end that connecting pile 6 deviates from whole ball piece 503 is connected with the seat 7 of seal through the bearing rotation, first hemisphere piece 501 rotates with the seat 7 of seal and is connected, seal the seat 7 and be connected fixedly through bolt and disk seat 1, the one end that whole ball piece 503 deviates from connecting pile 6 has valve rod 8 through the thread fastening, valve rod 8's surface cover is equipped with valve barrel 9, valve barrel 9 is connected fixedly through screw thread and second hemisphere piece 502, the connecting thread of valve barrel 9 and second hemisphere piece 502 is reverse with the connecting thread of valve rod 8 and whole ball piece 503, and all be reverse with the rotation direction of valve rod 8 and valve barrel 9.

One end of the valve sleeve 9 departing from the second hemispherical block 502 is sleeved with a first bevel gear 11, one end of the valve rod 8 departing from the first bevel gear 11 is sleeved with a second bevel gear 12, the outer surface of the second bevel gear 12 is meshed with a third bevel gear 13, one end of the third bevel gear 13 departing from the second bevel gear 12 is meshed with the first bevel gear 11, one end of the third bevel gear 13 departing from the second bevel gear 12 is fixed with a first connecting shaft 14, the outer surface of the valve seat 1 is sleeved with a shell 16, the first connecting shaft 14 is rotatably connected with the inner wall of the shell 16 through a bearing, the outer surface of the shell 16 is fixed with a sub-steering mechanism 15, the sub-steering mechanism 15 comprises a driving rod 1501, the driving rod 1501 is rotatably connected with the shell 16 through a bearing, the outer surface of the driving rod 1501 is sleeved with a first driving gear 1503 and a second driving gear 1504, one end of the driving rod 1501 departing from the second driving gear 1504 is, the outer surface of the first connecting shaft 14 is sleeved with a first driven gear 1505 and a second driven gear 1506, and the second driving gear 1504 is meshed with the first driven gear 1505, the first driving gear 1503 is matched with the second driven gear 1506, the first driving gear 1503 is switched to be meshed with the second driven gear 1506, or the second driving gear 1504 is meshed with the first driven gear 1505, so that the speed and the precision of opening and closing the valve can be controlled.

Further, one end, deviating from the shell 16, of the valve seat 1 is provided with two groups of connecting frames 4, and the two groups of connecting frames 4 are fixed on the first connecting seat 2 and the second connecting seat 3 respectively, and are conveniently connected and fixed with external equipment.

Further, fixed orifices 21 have been seted up to the surface of first connecting seat 2, the inside of fixed orifices 21 is provided with second spring 22, the surface butt of first hemisphere piece 501 has second sealing ring 20, the surface butt of second sealing ring 20 has sealed 19, and sealed 19 is inconsistent with the inner wall of disk seat 1, second spring 22 is contradicted with sealed 19, the inner structure of second connecting seat 3 is the same with the inner structure of first connecting seat 2, improve the leakproofness between second sealing ring 20 and first connecting seat 2 or the second connecting seat 3.

Furthermore, the outer surface of the valve sleeve 9 is sleeved with a sealing ring 10, the sealing ring 10 is abutted against the inner wall of the valve seat 1, and the sealing performance between the valve sleeve 9 and the valve seat 1 is improved.

Further, the outer surface of the valve sleeve 9 close to the sealing ring 10 is sleeved with a first sealing ring 17, the first sealing ring 17 is rotatably connected with the valve sleeve 9 through a bearing, the first sealing ring 17 is fixedly connected with the outer surface of the valve seat 1 through a bolt, and the connection stability of the valve sleeve 9 and the valve seat 1 is improved.

Further, the outer surface of shell 16 is fixed with stop gear 18, stop gear 18 includes sleeve 1801, sleeve 1801 is connected fixedly through screw and shell 16, sleeve 1801's inside flexible connection has spacer pin 1803, and sleeve 1801's inside is provided with first spring 1802, the both ends of first spring 1802 contradict with the inner wall of spacer pin 1803 and sleeve 1801 respectively, first spring 1802 plays and provides the effect of elasticity for spacer pin 1803, make spacer pin 1803 when no external force application, can be in the state shown in fig. 5 all the time.

Further, the one end that spacer pin 1803 deviates from sleeve 1801 is provided with spacing groove 1507, spacing groove 1507 is seted up on the surface of actuating lever 1501, spacer pin 1803 and spacing groove 1507 block, the quantity of spacing groove 1507 is two sets of, two sets of spacing grooves 1507 are separated by the interval and are equal with the interval of being separated by of first driving gear 1503 and second driving gear 1504, can drive first driving gear 1503 and second driving gear 1504 through pulling actuating lever 1501 and remove about, switch first driving gear 1503 and 1056 meshing, or second driving gear 1504 and first driven gear 1505 meshing, contradict with spacing groove 1507 through spacer pin 1803, can avoid the actuating lever 1501 to rock about, stability is improved.

The working principle is as follows: during the use, with first connecting seat 2 through the bolt with place the jar body jar mouth of liquid nitrogen and be connected fixedly, can drive the actuating lever 1501 through rotating hand wheel 1502 and rotate, make actuating lever 1501 drive second driving gear 1504 rotate, second driving gear 1504 can drive first connecting axle 14 through first driven gear 1505 and rotate, make first connecting axle 14 pass through third conical gear 13 and drive first conical gear 11 and second conical gear 12 corotation, a reversal, and then drive valve rod 8 and valve barrel 9 and drive second hemisphere piece 502 and whole ball piece 503 corotation a reversal, make the opening on first hemisphere piece 501, second hemisphere piece 502 and the whole ball piece 503 keep away from the interior passageway of valve seat 1, can close the valve, otherwise can open the valve.

When the control accuracy of the valve needs to be adjusted and opened, the hand wheel 1502 is pulled to drive the driving rod 1501 to stretch in the shell 16, the first driving gear 1503 can be driven to be meshed with the second driven gear 1506, or the second driving gear 1504 is meshed with the first driven gear 1505, the first driven gear 1505 is driven by the second driving gear 1504, the valve is opened and closed faster, the second driven gear 1506 is driven by the first driving gear 1503, and the valve is controlled to be opened and closed more finely.

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 without departing from the spirit and principle of the present invention shall fall within the protection scope of the present invention.

Claims

1. The utility model provides an utensil liquid nitrogen storage facilities is with having convenient cryogenic valve who opens and close structure, includes disk seat (1), its characterized in that: one end of the valve seat (1) is fixed with a first connecting seat (2) through a bolt, the other end of the valve seat (1) is fixed with a second connecting seat (3) through a bolt, a valve core assembly (5) is arranged inside the valve seat (1), the valve core assembly (5) comprises a first hemispherical block (501) and a second hemispherical block (502), the first hemispherical block (501) and the second hemispherical block (502) are vertically embedded, both sides of the first hemispherical block (501) and the second hemispherical block (502) are fixed through bolts, the inner wall of the first hemispherical block (501) is attached with a whole spherical block (503), one end of the whole spherical block (503), which deviates from the first hemispherical block (501), is abutted against the inner wall of the second hemispherical block (502), the inside of the whole spherical block (503) is hollowed, and the apertures of both sides of the whole spherical block (503) are the same as the apertures of the first hemispherical block (501) and the second hemispherical block (502), one end of the whole ball block (503) is fixedly connected with a connecting pile (6) through threads, one end of the connecting pile (6) deviating from the whole ball block (503) is rotatably connected with a sealing seat (7) through a bearing, a first semi-ball block (501) is rotatably connected with the sealing seat (7), the sealing seat (7) is fixedly connected with a valve seat (1) through a bolt, one end of the whole ball block (503) deviating from the connecting pile (6) is fixedly connected with a valve rod (8) through threads, the outer surface of the valve rod (8) is sleeved with a valve sleeve (9), the valve sleeve (9) is fixedly connected with a second semi-ball block (502) through threads, one end of the valve sleeve (9) deviating from the second semi-ball block (502) is sleeved with a first bevel gear (11), one end of the valve rod (8) deviating from the first bevel gear (11) is sleeved with a second bevel gear (12), and the outer surface of the second bevel gear (12) is engaged with a third bevel gear (13), one end of a third bevel gear (13) departing from the second bevel gear (12) is meshed with the first bevel gear (11), one end of the third bevel gear (13) departing from the second bevel gear (12) is fixed with a first connecting shaft (14), the outer surface of the valve seat (1) is sleeved with a shell (16), the first connecting shaft (14) is rotatably connected with the inner wall of the shell (16) through a bearing, the outer surface of the shell (16) is fixed with a steering mechanism (15), the steering mechanism (15) comprises a driving rod (1501), the driving rod (1501) is rotatably connected with the shell (16) through a bearing, the outer surface of the driving rod (1501) is sleeved with a first driving gear (1503) and a second driving gear (1504), one end of the driving rod (1501) departing from the second driving gear (1504) is fixed with a hand wheel (1502), the outer surface of the first connecting shaft (14) is sleeved with a first driven gear (1505) and a second driven gear (1506), and the second driving gear (1504) is meshed with the first driven gear (1505).

2. The cryogenic valve with the structure convenient to open and close for the liquid nitrogen storage device according to claim 1, is characterized in that: one end of the valve seat (1) departing from the shell (16) is provided with two groups of connecting frames (4), and the two groups of connecting frames (4) are respectively fixed on the first connecting seat (2) and the second connecting seat (3).

3. The cryogenic valve with the structure convenient to open and close for the liquid nitrogen storage device according to claim 1, is characterized in that: the outer surface of the first connecting seat (2) is provided with a fixing hole (21), and a second spring (22) is arranged in the fixing hole (21).

4. The cryogenic valve with a convenient opening and closing structure for liquid nitrogen storage equipment according to claim 3, characterized in that: the surface of first hemisphere piece (501) is to having second sealing ring (20), the surface of second sealing ring (20) is to having sealed pad (19), and sealed pad (19) and the inner wall of disk seat (1) are inconsistent, second spring (22) are contradicted with sealed pad (19), the inner structure of second connecting seat (3) is the same with the inner structure of first connecting seat (2).

5. The cryogenic valve with the structure convenient to open and close for the liquid nitrogen storage device according to claim 1, is characterized in that: the outer surface cover of valve barrel (9) is equipped with sealing washer (10), sealing washer (10) contradict with the inner wall of disk seat (1).

6. The cryogenic valve with the structure convenient to open and close for the liquid nitrogen storage device according to claim 1, is characterized in that: the outer surface cover that valve barrel (9) are close to sealing washer (10) is equipped with first sealing ring (17), first sealing ring (17) are connected through bearing and valve barrel (9) rotation, first sealing ring (17) are connected fixedly through the surface of bolt with disk seat (1).

7. The cryogenic valve with the structure convenient to open and close for the liquid nitrogen storage device according to claim 1, is characterized in that: the outer fixed surface of shell (16) has stop gear (18), stop gear (18) include sleeve (1801), sleeve (1801) are connected fixedly through screw and shell (16), the inside telescopic connection of sleeve (1801) has spacer pin (1803), and the inside of sleeve (1801) is provided with first spring (1802), the both ends of first spring (1802) are contradicted with the inner wall of spacer pin (1803) and sleeve (1801) respectively.

8. The cryogenic valve with a convenient opening and closing structure for liquid nitrogen storage equipment according to claim 7, characterized in that: the one end that gag pin (1803) deviates from sleeve (1801) is provided with spacing groove (1507), set up on the surface of actuating lever (1501) in spacing groove (1507), gag pin (1803) and spacing groove (1507) block, the quantity of spacing groove (1507) is two sets of spacing groove (1507) are separated by the interval and first driving gear (1503) and second driving gear (1504) be separated by the interval and equal.