CN114151715B

CN114151715B - Liquid nitrogen supply tank

Info

Publication number: CN114151715B
Application number: CN202111534690.5A
Authority: CN
Inventors: 翁晶
Original assignee: CHONGQING RISING GAS CO LTD
Current assignee: CHONGQING RISING GAS CO LTD
Priority date: 2021-12-16
Filing date: 2021-12-16
Publication date: 2023-04-07
Anticipated expiration: 2041-12-16
Also published as: CN114151715A

Abstract

The invention discloses a liquid nitrogen supply tank which comprises a tank body, wherein a heat preservation layer is fixedly connected to the inner wall of the tank body, supporting legs which are symmetrically distributed are fixedly connected to the bottom of the tank body, an inner container is fixedly connected to the inside of the tank body, a connecting ring is fixedly connected to the outer wall of the inner container in a sleeved mode, a plurality of groups of connecting pipes which are distributed equidistantly are fixedly connected to the bottom of the connecting ring, a connecting disc is fixedly connected to the bottom of the inner container and fixedly connected with the connecting pipes, a water outlet pipe is fixedly connected to the bottom of the connecting disc, when the pressure in the tank body is too high, a push plate can move upwards, a movable rod can move, when an elastic sheet touches a sensor, a first motor is started, an output shaft of the first motor rotates to drive a vertical shaft to rotate so as to drive a worm to rotate, the worm rotates to drive a rotating shaft to rotate so as to drive a cover plate to overturn, and at the moment, the fixing rod moves to the upper portion, which is close to the second cavity, and exhausts, so that pressure regulation balance is realized.

Description

Liquid nitrogen supply tank

Technical Field

The invention relates to the field of liquid nitrogen supply tanks, in particular to a liquid nitrogen supply tank.

Background

The liquid nitrogen tank can be generally divided into a liquid nitrogen storage tank and a liquid nitrogen transport tank. The storage tank is mainly used for standing storage of indoor liquid nitrogen and is not suitable for long-distance transportation in a working state; the liquid nitrogen transport tank is specially designed to be shockproof in order to meet the transport conditions. Besides standing for storage, the liquid nitrogen storage container can be used for transportation in a liquid nitrogen filling state, and severe collision and vibration are avoided.

This application improves under prior art, among the prior art, pour into the liquid nitrogen into the back, press in order to balance a jar body, need set up the gas vent on the jar body and carry out the pressure release of exhausting, simultaneously because liquid nitrogen is very volatile, liquid nitrogen causes liquid nitrogen to volatilize easily with the air contact for a long time, consequently, the gas vent that sets up on the jar body need seal the processing, with the volatilization that reduces the liquid nitrogen, secondly, need slowly fill and carry out the precooling when filling the liquid nitrogen to new jar or the jar body that is in dry state, in order to reduce the temperature and damage the inner bag too soon, reduce service life.

Disclosure of Invention

The invention aims to solve the defects in the prior art and provides a liquid nitrogen replenishing tank.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a liquid nitrogen supply tank, which comprises a tank body, the inner wall fixedly connected with heat preservation of the jar body, the supporting leg of the bottom fixedly connected with symmetric distribution of the jar body, the internal fixedly connected with inner bag of jar, the fixed go-between that has cup jointed of outer wall of inner bag, the connecting pipe that the bottom fixedly connected with multiunit equidistance of go-between distributes, the bottom fixedly connected with connection pad of inner bag, and connection pad and connecting pipe fixed connection, the bottom fixedly connected with outlet pipe of connection pad, and outlet pipe and jar body fixed connection, the outlet pipe stretches out the one end of the jar body and installs the shutoff piece, top one side-mounting blast pipe of the jar body, cavity two has been seted up in the blast pipe, the inner wall fixedly connected with dead lever of cavity two, sliding connection has the movable rod on the dead lever, the one end fixedly connected with the push pedal of cavity two inner wall sliding connection that the movable rod top stretched out the movable rod, the bottom fixedly connected with of push pedal cup joints with the first spring with the movable rod, and the other end and dead lever fixed connection of first spring, the apron is installed at the top of blast pipe.

As a further scheme of the invention: the movable rod is fixedly connected with a limiting block at one end extending out of the bottom of the fixed rod, the bottom of the fixed rod is fixedly connected with a sensor, and an elastic sheet fixedly connected with the movable rod is arranged below the sensor.

As a still further scheme of the invention: one side outer wall fixedly connected with support of blast pipe, it is connected with the pivot to rotate on the support, the apron is close to one side fixedly connected with connecting block of pivot, and the connecting block cup joints with the pivot is fixed, the outer wall of pivot is fixed to be cup jointed and is had the worm wheel, one side meshing that the apron was kept away from to the worm wheel has the worm, the bottom fixedly connected with vertical axis of worm, the top outer wall fixedly connected with boss of the jar body, the top fixedly connected with support frame of boss, and the support frame rotates with vertical axis to be connected, the first motor of top fixedly connected with of boss, and the output shaft and the vertical axis fixed connection of first motor.

As a still further scheme of the invention: the utility model discloses a sealed water pump, including go-between, connecting cylinder, riser, telescopic inner wall threaded connection, connecting cylinder and jar body fixed connection, the top of connecting cylinder is rotated and is connected with the expansion pipe, the top outer wall fixedly connected with riser of the jar body, the riser internal rotation is connected with the sleeve, telescopic inner wall threaded connection has the thread bush, the bottom outer wall fixedly connected with extension board of thread bush, fixedly connected with telescopic link on the extension board, and the other end and the riser fixed connection of telescopic link, the inner wall and the expansion pipe sliding connection of thread bush, the guide bar of the inner wall fixedly connected with symmetric distribution of thread bush, it is two sets of the equal fixedly connected with in one side that the guide bar is close to each other is sealed, the guide way of symmetric distribution is seted up to the outer wall of expansion pipe, and guide way and guide bar looks adaptation.

As a still further scheme of the invention: the connecting cylinder is of a hollow structure, the outer wall of the movable pipe is fixedly sleeved with symmetrically distributed fixing rings, two groups of fixing rings are respectively located on the outer wall and the inner wall of the connecting cylinder, two groups of fixing rings are arranged between the fixing rings and fixedly sleeved with the outer wall of the movable pipe, a first sealing groove is formed in the top of the connecting cylinder, and the first sealing groove is matched with the first sealing ring.

As a still further scheme of the invention: the improved water inlet pipe structure is characterized in that a first cavity is formed in the connecting ring, a liquid inlet groove is formed in one side of the top of the connecting ring and is matched with the water inlet pipe, the liquid inlet groove is communicated with the first cavity, a plurality of groups of flow distribution grooves distributed at equal intervals are formed in the bottom of the connecting ring along the circumferential direction of the connecting ring and are matched with the connecting pipe, and the flow distribution grooves are communicated with the first cavity.

As a still further scheme of the invention: the top inner wall threaded connection of inner bag has the screw ring, the shrouding of the top fixedly connected with of screw ring and inner bag top butt, the bottom of shrouding is rotated and is connected with the change, the bottom fixedly connected with second spring of change, the bottom fixedly connected with clamp plate of second spring, and clamp plate and inner bag butt.

As a still further scheme of the invention: the inner container is characterized in that a second sealing groove is formed in the top of the inner container, a second sealing ring is fixedly connected to the inner wall of the bottom of the second sealing groove, a first sealing ring is fixedly connected to the bottom of the sealing plate, the first sealing ring is matched with the second sealing groove, a third sealing groove is formed in the inner container, a third sealing ring is fixedly connected to the inner wall of the bottom of the third sealing groove, a second sealing ring is fixedly connected to the bottom of the pressing plate, and the second sealing ring is matched with the third sealing groove.

As a still further scheme of the invention: the inner container is internally provided with symmetrically distributed vertical grooves, the inner wall of each vertical groove is connected with a movable ring in a sliding mode, the movable rings are fixedly connected with filter screens, the top of each movable ring is fixedly connected with a guide rod, and the top end of each guide rod is abutted to the pressing plate.

The invention has the following beneficial effects:

1. before liquid nitrogen is flushed into the inner container, the sleeve is rotated, so that the support plate moves downwards under the guiding of the guide strip and the guide groove, the telescopic rod contracts, when the movable pipe is separated from the threaded sleeve, the movable pipe is rotated, precooling liquid can be filled through the movable pipe, the precooling liquid enters a first cavity in the connecting ring through the connecting cylinder and the water inlet pipe, then the precooling liquid is divided through a plurality of groups of connecting pipes, the inner container is precooled when the precooling liquid circulates in the connecting pipes, and then the precooling liquid falls into the connecting disc and is discharged through the water outlet pipe;

2. according to the invention, when the pressure in the tank body is too high, the push plate can be moved upwards, so that the movable rod can be moved, when the elastic sheet is contacted with the sensor, the first motor is started, the output shaft of the first motor rotates to drive the vertical shaft to rotate so as to drive the worm to rotate, the worm rotates to drive the worm wheel to rotate so as to drive the rotating shaft to rotate so as to drive the cover plate to turn, and at the moment, the fixed rod moves to the upper part of the cavity II to exhaust, so that pressure regulating balance is realized;

3. according to the inner container sealing device, when the inner container is sealed, the sealing plate is pressed to enable the second sealing ring to enter the third sealing groove, the sealing plate is rotated to drive the threaded ring to rotate, the threaded ring rotates and moves downwards to enable the sealing plate to move downwards, the first sealing ring at the bottom of the sealing plate enters the second sealing groove, the distance between the sealing plate and the pressing plate is gradually reduced in the downward moving process of the sealing plate, the second spring is further deformed, the pressing plate is tightly attached to the inner container under the elastic action of the second spring, and the sealing performance of the inner container is improved through two-stage sealing;

4. according to the invention, in the process of pressing the pressing plate downwards, the pressing plate pushes the guide rod to move so as to enable the movable ring to move downwards, so that sundries are prevented from entering the inner container when the inner container is filled or opened, and the inner container is prevented from being corroded by foreign matters due to the fact that the sundries enter the inner container due to the arrangement of the filter screen.

Drawings

FIG. 1 is a schematic structural diagram of a liquid nitrogen replenishment tank according to the present invention;

FIG. 2 is a schematic view illustrating a closed state of a liquid nitrogen replenishing tank according to the present invention;

FIG. 3 is an enlarged view of the structure at A of FIG. 1 according to the present invention;

FIG. 4 is an enlarged view of the structure at B of FIG. 1 according to the present invention;

FIG. 5 is an enlarged view of the structure of FIG. 1 at C according to the present invention;

fig. 6 is an enlarged view of fig. 3 at D according to the present invention.

Illustration of the drawings:

the water-cooling water tank comprises a tank body 1, a heat-insulating layer 2, an inner container 3, a connecting ring 4, a connecting pipe 5, a connecting disc 6, a water outlet pipe 7, a blocking block 8, an exhaust pipe 9, a connecting cylinder 10, a water inlet pipe 11, a movable rod 12, a first spring 13, a cover plate 14, a support 15, a rotating shaft 16, a worm wheel 17, a worm 18, a vertical shaft 19, a push plate 20, a first motor 21, a fixed rod 22, a first cavity 23, a movable pipe 24, a guide groove 25, a sealing gasket 26, a guide strip 27, a threaded sleeve 28, a support plate 29, a sleeve 30, a vertical plate 31, a telescopic rod 32, a fixed ring 33, a first sealing ring 34, a first sealing groove 35, a sealing plate 36, a rotating ring 37, a second spring 38, a pressing plate 39, a second sealing groove 40, a first sealing ring 41, a second sealing ring 42, a second sealing ring 43, a third sealing ring 44, a vertical groove 45, a filter screen 46, a guide rod 47, a movable ring 48, a third sealing groove 49, a limiting block 50, a connecting block 51, a supporting frame 52, a supporting frame 53, a sensor 54, a spring piece 55, a flow dividing groove 56, a liquid inlet groove 57, a threaded ring 58, a boss 59 and a cavity 60.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention; the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance, and furthermore, unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1-6, the liquid nitrogen supply tank provided by the invention comprises a tank body 1, wherein an insulating layer 2 is fixedly connected to the inner wall of the tank body 1, symmetrically distributed support legs 53 are fixedly connected to the bottom of the tank body 1, an inner container 3 is fixedly connected to the inside of the tank body 1, a connecting ring 4 is fixedly sleeved on the outer wall of the inner container 3, a plurality of groups of connecting pipes 5 are fixedly connected to the bottom of the connecting ring 4 and equidistantly distributed, a connecting disc 6 is fixedly connected to the bottom of the inner container 3, the connecting disc 6 is fixedly connected to the connecting pipes 5, a water outlet pipe 7 is fixedly connected to the bottom of the connecting disc 6, the water outlet pipe 7 is fixedly connected to the tank body 1, a plugging block 8 is installed at one end, extending out of the tank body 1, of the water outlet pipe 7, an exhaust pipe 9 is installed at one side of the top of the tank body 1, a cavity two 60 is arranged in the exhaust pipe 9, a fixed rod 22 is fixedly connected to the inner wall of the cavity two 60, a movable rod 12 is slidably connected to the fixed rod 22, a push plate 20 is fixedly connected to the end, a first spring 13 sleeved to the movable rod 12 is fixedly connected to the top of the push plate 14 is fixedly connected to the movable rod 9.

The end of the movable rod 12 extending out of the bottom of the fixed rod 22 is fixedly connected with a limiting block 50, the bottom of the fixed rod 22 is fixedly connected with a sensor 54, and an elastic sheet 55 fixedly connected with the movable rod 12 is arranged below the sensor 54.

Exhaust pipe 9's one side outer wall fixedly connected with support 15, it is connected with pivot 16 to rotate on the support 15, apron 14 is close to one side fixedly connected with connecting block 51 of pivot 16, and connecting

block

51 and 16 fixed cup joints of pivot, the outer wall of pivot 16 is fixed to be cup jointed worm wheel 17, one side meshing that apron 14 was kept away from to worm wheel 17 has worm 18, the bottom fixedly connected with vertical axis 19 of worm 18, the top outer wall fixedly connected with boss 59 of the jar body 1, the top fixedly connected with support frame 52 of boss 59, and support frame 52 rotates with vertical axis 19 to be connected, the first motor 21 of top fixedly connected with of boss 59, and the output shaft and the vertical axis 19 fixed connection of first motor 21.

One side top fixedly connected with inlet tube 11 of go-between 4, the other end fixedly connected with connecting cylinder 10 of inlet tube 11, and connecting cylinder 10 and jar body 1 fixed connection, the top of connecting cylinder 10 is rotated and is connected with the movable tube 24, the top outer wall fixedly connected with riser 31 of jar body 1, the riser 31 internal rotation is connected with sleeve 30, the inner wall threaded connection of sleeve 30 has thread bush 28, the bottom outer wall fixedly connected with extension board 29 of thread bush 28, fixedly connected with telescopic link 32 on the extension board 29, and the other end and the riser 31 fixed connection of telescopic link 32, the inner wall and the movable tube 24 sliding connection of thread bush 28, the inner wall fixedly connected with symmetric distribution's of thread bush 28 gib 27, the equal fixedly connected with sealed pad 26 in one side that two sets of gib 27 are close to each other, symmetric distribution's guide way 25 is seted up to the outer wall of movable tube 24, and gib 25 and gib 27 looks adaptation.

Connecting cylinder 10 is hollow structure, and the fixed solid fixed ring 33 that has cup jointed the symmetric distribution of the outer wall of activity pipe 24, and two sets of solid fixed ring 33 are located the outer wall and the inner wall of connecting cylinder 10 respectively, are equipped with the first sealing washer 34 that fixedly cup joints with the outer wall of activity pipe 24 between two sets of solid fixed ring 33, and first seal groove 35 has been seted up at the top of connecting cylinder 10, and first seal groove 35 has first sealing washer 34 looks adaptation.

The cavity I23 is formed in the connecting ring 4, the liquid inlet groove 57 is formed in one side of the top of the connecting ring 4, the liquid inlet groove 57 is matched with the water inlet pipe 11, the liquid inlet groove 57 is communicated with the cavity I23, a plurality of groups of flow dividing grooves 56 which are distributed equidistantly are formed in the bottom of the connecting ring 4 along the circumferential direction of the bottom, the flow dividing grooves 56 are matched with the connecting pipe 5, and the flow dividing grooves 56 are communicated with the cavity I23.

Threaded ring 58 is connected to the top inner wall threaded connection of inner bag 3, threaded ring 58's top fixedly connected with and the shrouding 36 of inner bag 3 top butt, and the bottom of shrouding 36 is rotated and is connected with swivel 37, and swivel 37's bottom fixedly connected with second spring 38, the bottom fixedly connected with clamp plate 39 of second spring 38, and clamp plate 39 and inner bag 3 butt.

Second seal groove 40 has been seted up at the top of inner bag 3, the bottom inner wall fixedly connected with second sealing washer 42 of second seal groove 40, the first sealing ring 41 of bottom fixedly connected with of shrouding 36, and first sealing ring 41 and the adaptation of second seal groove 40 looks, seted up third seal groove 49 in the inner bag 3, the bottom inner wall fixedly connected with third sealing washer 44 of third seal groove 49, the bottom fixedly connected with second sealing ring 43 of clamp plate 39, and second sealing ring 43 and the adaptation of third seal groove 49 looks.

Set up the vertical groove 45 of symmetric distribution in the inner bag 3, the inner wall sliding connection of vertical groove 45 has the activity ring 48, fixedly connected with filter screen 46 between two sets of activity rings 48, the top fixedly connected with guide bar 47 of activity ring 48, and the top and the clamp plate 39 butt of guide bar 47.

The working principle is as follows:

in the application, before the liquid nitrogen is injected into the inner container 3, the sleeve 30 is rotated, so that the support plate 29 is guided to move downwards through the matching of the guide strip 27 and the guide groove 25, meanwhile, the telescopic rod 32 is contracted, when the movable tube 24 is separated from the threaded sleeve 28, the movable tube 24 is rotated, and then precooling liquid can be filled through the movable tube 24, the precooling liquid enters the first cavity 23 in the connecting ring 4 through the connecting cylinder 10 and the water inlet tube 11, then is distributed through a plurality of groups of connecting tubes 5, and is precooled for the inner container 3 when the precooling liquid circulates in the connecting tubes 5, and then falls into the connecting disc 6 and is discharged through the water outlet tube 7;

in the application, when the pressure in the tank body 1 is too high, the push plate 20 can move upwards, so that the movable rod 12 moves, when the elastic sheet 55 touches the sensor 54, the first motor 21 is started, the output shaft of the first motor 21 rotates to drive the vertical shaft 19 to rotate so as to drive the worm 18 to rotate, the worm 18 rotates to drive the worm wheel 17 to rotate so as to drive the rotating shaft 16 to rotate so as to drive the cover plate 14 to overturn, and at the moment, the fixed rod 22 moves to the upper part of the cavity II 60 and exhausts, so that pressure regulating balance is realized;

in the application, when the liner 3 is sealed, the sealing plate 36 is pressed to enable the second sealing ring 43 to enter the third sealing groove 49, the sealing plate 36 is rotated, the sealing plate 36 rotates to further drive the threaded ring 58 to rotate, the threaded ring 58 rotates and moves downwards, the sealing plate 36 moves downwards, the first sealing ring 41 at the bottom of the sealing plate 36 enters the second sealing groove 40, the distance between the sealing plate 36 and the pressing plate 39 is gradually reduced in the downward moving process, the second spring 38 is deformed, the pressing plate 39 is tightly attached to the liner 3 under the elastic action of the second spring 38, and the sealing performance of the liner 3 is improved through two-stage sealing;

in this application, in the clamp plate 39 pushes down the in-process, clamp plate 39 promotes the guide bar 47 and removes and then makes the activity ring 48 move down, has avoided in debris carry out inner bag 3, has avoided setting up through filter screen 46 when filling or uncovered, in debris get into inner bag 3, lead to the foreign matter to make inner bag 3 corrode.

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 or portions thereof without departing from the spirit and scope of the invention.

Claims

1. The utility model provides a liquid nitrogen replenishing tank, includes jar body (1), its characterized in that: the inner wall of the tank body (1) is fixedly connected with a heat preservation layer (2), the bottom of the tank body (1) is fixedly connected with supporting legs (53) which are symmetrically distributed, the tank body (1) is internally and fixedly connected with an inner container (3), the outer wall of the inner container (3) is fixedly sleeved with a connecting ring (4), the bottom of the connecting ring (4) is fixedly connected with a plurality of groups of connecting pipes (5) which are equidistantly distributed, the bottom of the inner container (3) is fixedly connected with a connecting disk (6), the connecting disk (6) is fixedly connected with the connecting pipes (5), the bottom of the connecting disk (6) is fixedly connected with a water outlet pipe (7), the water outlet pipe (7) is fixedly connected with the tank body (1), one end of the water outlet pipe (7) extending out of the tank body (1) is provided with a sealing block (8), an exhaust pipe (9) is installed on one side of the top of the tank body (1), a cavity two (60) is arranged in the exhaust pipe (9), the inner wall of the cavity two (60) is fixedly connected with a fixing rod (22), the fixing rod (22) is connected with a sliding connection of the fixing rod (22), the movable rod (12) is connected with one end of the movable rod (12) extending out of the fixing rod (22) which is fixedly connected with a push plate (60) which is fixedly connected with the top of the cavity two push plate (20), and a first push plate (20) which is connected with the inner wall of the inner wall (12) which is connected with the movable rod (12) which is sleeved with a spring (13), the other end of the first spring (13) is fixedly connected with a fixed rod (22), and a cover plate (14) is installed at the top of the exhaust pipe (9); a limiting block (50) is fixedly connected to one end, extending out of the bottom of the fixed rod (22), of the movable rod (12), a sensor (54) is fixedly connected to the bottom of the fixed rod (22), and an elastic sheet (55) fixedly connected with the movable rod (12) is arranged below the sensor (54); the exhaust pipe is characterized in that a support (15) is fixedly connected to the outer wall of one side of the exhaust pipe (9), a rotating shaft (16) is rotatably connected to the support (15), a connecting block (51) is fixedly connected to one side, close to the rotating shaft (16), of the cover plate (14), the connecting block (51) is fixedly sleeved with the rotating shaft (16), a worm wheel (17) is fixedly sleeved on the outer wall of the rotating shaft (16), a worm (18) is meshed with one side, far away from the cover plate (14), of the worm wheel (17), a vertical shaft (19) is fixedly connected to the bottom of the worm (18), a boss (59) is fixedly connected to the outer wall of the top of the tank body (1), a support frame (52) is fixedly connected to the top of the boss (59), the support frame (52) is rotatably connected with the vertical shaft (19), a first motor (21) is fixedly connected to the top of the boss (59), and an output shaft of the first motor (21) is fixedly connected with the vertical shaft (19); the water tank is characterized in that a water inlet pipe (11) is fixedly connected to the top of one side of the connecting ring (4), a connecting cylinder (10) is fixedly connected to the other end of the water inlet pipe (11), the connecting cylinder (10) is fixedly connected with the tank body (1), a movable pipe (24) is rotatably connected to the top of the connecting cylinder (10), a vertical plate (31) is fixedly connected to the outer wall of the top of the tank body (1), a sleeve (30) is rotatably connected to the vertical plate (31), a threaded sleeve (28) is connected to the inner wall of the sleeve (30) in a threaded manner, a support plate (29) is fixedly connected to the outer wall of the bottom of the threaded sleeve (28), a telescopic rod (32) is fixedly connected to the support plate (29), the other end of the telescopic rod (32) is fixedly connected with the vertical plate (31), the inner wall of the threaded sleeve (28) is slidably connected with the movable pipe (24), symmetrically distributed guide strips (27) are fixedly connected to the inner wall of the threaded sleeve (28), a sealing gasket (26) is fixedly connected to one side, where the two groups of the guide strips (27) are close to each other, and guide grooves (25) are symmetrically distributed and are matched with the guide strips (27); the connecting cylinder (10) is of a hollow structure, fixing rings (33) which are symmetrically distributed are fixedly sleeved on the outer wall of the movable pipe (24), two groups of fixing rings (33) are respectively positioned on the outer wall and the inner wall of the connecting cylinder (10), a first sealing ring (34) fixedly sleeved with the outer wall of the movable pipe (24) is arranged between the two groups of fixing rings (33), a first sealing groove (35) is formed in the top of the connecting cylinder (10), and the first sealing ring (34) is arranged in the first sealing groove (35) in a matched mode; the water inlet pipe is characterized in that a first cavity (23) is formed in the connecting ring (4), a liquid inlet groove (57) is formed in one side of the top of the connecting ring (4), the liquid inlet groove (57) is matched with the water inlet pipe (11), the liquid inlet groove (57) is communicated with the first cavity (23), a plurality of groups of flow distribution grooves (56) which are distributed at equal intervals are formed in the bottom of the connecting ring (4) along the circumferential direction of the connecting ring, the flow distribution grooves (56) are matched with the connecting pipe (5), and the flow distribution grooves (56) are communicated with the first cavity (23); the inner wall of the top of the inner container (3) is in threaded connection with a threaded ring (58), the top of the threaded ring (58) is fixedly connected with a sealing plate (36) abutted to the top of the inner container (3), the bottom of the sealing plate (36) is rotatably connected with a rotating ring (37), the bottom of the rotating ring (37) is fixedly connected with a second spring (38), the bottom of the second spring (38) is fixedly connected with a pressing plate (39), and the pressing plate (39) is abutted to the inner container (3); a second sealing groove (40) is formed in the top of the inner container (3), a second sealing ring (42) is fixedly connected to the inner wall of the bottom of the second sealing groove (40), a first sealing ring (41) is fixedly connected to the bottom of the sealing plate (36), the first sealing ring (41) is matched with the second sealing groove (40), a third sealing groove (49) is formed in the inner container (3), a third sealing ring (44) is fixedly connected to the inner wall of the bottom of the third sealing groove (49), a second sealing ring (43) is fixedly connected to the bottom of the pressing plate (39), and the second sealing ring (43) is matched with the third sealing groove (49); vertical groove (45) of symmetric distribution have been seted up in inner bag (3), the inner wall sliding connection of vertical groove (45) has activity ring (48), and is two sets of fixedly connected with filter screen (46) between activity ring (48), the top fixedly connected with guide bar (47) of activity ring (48), and the top and clamp plate (39) butt of guide bar (47).