CN116857391A

CN116857391A - Liquid discharge valve

Info

Publication number: CN116857391A
Application number: CN202311133580.7A
Authority: CN
Inventors: 楚朝阳; 杨振江; 张向旭; 张家义; 杨琦
Original assignee: Golden Monkey Food Co ltd; Yantai Snub Nosed Monkey Food Technology Co ltd
Current assignee: Golden Monkey Food Co ltd; Yantai Snub Nosed Monkey Food Technology Co ltd
Priority date: 2023-09-05
Filing date: 2023-09-05
Publication date: 2023-10-10
Anticipated expiration: 2043-09-05
Also published as: CN116857391B

Abstract

The invention relates to the technical field of valves, in particular to a liquid discharge valve, wherein a knife gate valve is used for controlling a first pipeline to be communicated with a second pipeline or separated from the first pipeline, a discharge cylinder is made of elastic materials, one end of the discharge cylinder, which is far away from a sugar storage tank, is provided with an expansion part, the expansion part is elastic, a plurality of groups of driving components are arranged at intervals on the outer ring side of an annular part, the driving components comprise a first driving rod which is rotatably arranged on the outer ring side of the annular part, one end of the first driving rod, which is far away from the annular part, is fixedly connected with the outer side surface of the expansion part, two extrusion parts are movably connected and are positioned on one side, close to the sugar storage tank, of the annular part, and the two extrusion parts can extrude the discharge cylinder when sliding along the axial direction of a connecting part, so that the sealing property of the knife gate valve is improved.

Description

Liquid discharge valve

Technical Field

The invention relates to the technical field of valves, in particular to a liquid discharge valve.

Background

In the production process of sugar products, the step of heating and boiling is usually needed, and heated syrup is easy to adhere to a valve port of a discharge valve during discharging, so that the problem that the discharge valve is not tightly sealed or is difficult to seal during closing can occur.

The application number 202110096478.9 is a Chinese patent application, which discloses a sugar fluid blocking valve, when the valve is used, firstly, a control disc is rotated to drive a convex rotating wheel to rotate and extrude a sealing block to move to two sides through a control shaft, a squeezing plate loses the support of the convex rotating wheel, a traction spring tightens the squeezing plates to be close to each other, the control disc is pressed down, a butt joint strip squeezes valve plates at two sides to be opened downwards, and then the blocking of the valve can be gradually completed.

However, when the valve is closed, a part of syrup adheres to the inner wall of the valve body pipe and the valve plate, and a part of syrup is cooled, so that the valve plate is difficult to block the valve well.

Disclosure of Invention

The invention provides a liquid discharge valve, which aims to solve the problem that syrup adheres to the inner wall of a valve body pipe and a valve plate when the valve is closed in the related art, so that the sealing performance of the valve is reduced.

The liquid discharge valve comprises a knife gate valve, a second pipeline, a discharge cylinder and two extrusion parts, wherein the knife gate valve comprises a pipeline part, a first pipeline is arranged at one end of the knife gate valve and is communicated with a sugar storage tank, the second pipeline is arranged at the other end of the knife gate valve and comprises an external expansion part and a connecting part, the connecting part is in sealing connection with the pipeline part, and the knife gate valve is used for controlling the first pipeline to be communicated with or separated from the second pipeline; the discharging barrel is made of elastic materials, is installed in the first pipeline and is connected with the inner peripheral wall of the first pipeline in a sealing mode, an annular part is fixedly arranged on the outer peripheral side of one end, far away from the sugar storage tank, of the discharging barrel, an expanding part is arranged on one end, far away from the sugar storage tank, of the discharging barrel, the expanding part is elastic, multiple groups of driving assemblies are arranged on the outer ring side of the annular part at intervals, each driving assembly comprises a first driving rod rotatably installed on the outer ring side of the annular part, and one end, far away from the annular part, of each first driving rod is fixedly connected with the outer side face of the expanding part; two the extrusion piece activity links to each other and two extrusion pieces are located the one side that the annular piece is close to the sugar storage tank, two the extrusion piece can extrude ejection of compact section of thick bamboo when sliding along the axial of connecting portion to the direction that is close to the sugar storage tank.

Preferably, the driving assembly comprises a roller rotatably mounted on the outer ring side of the ring member, the roller is capable of rolling contact with the inner peripheral wall of the pipe portion, the inner peripheral wall of the first pipe and the inner peripheral wall of the connecting portion, a shaft rod is coaxially and fixedly mounted on the roller, and the first driving rod is connected with the shaft rod through a first elastic member.

Preferably, the outer expansion part is located the one end that pipeline portion was kept away from to connecting portion, outer expansion part is loudspeaker form, the ring piece can drive first actuating lever and rotate when moving to the direction that is close to the sugar storage tank, so that extension part inwards contracts, when the ring piece moves to outer expansion part, first actuating lever can drive extension part and expand outward and form loudspeaker form structure two spacing spouts have been seted up to the inner wall of first pipeline, two spacing spouts extend to the one end that is kept away from the sugar storage tank and arrange in proper order on the inner wall of pipeline portion and second pipeline, two spacing spouts all are located the outside of ejection of compact section of thick bamboo.

Preferably, two sides that the extrusion piece kept away from each other are provided with respectively with spacing spout matched with spacing slider, two install the telescopic link between the extrusion piece, the both ends of telescopic link rotate with two extrusion pieces respectively and are connected, two the extrusion piece is relative one side has the extrusion face respectively.

Preferably, the extrusion surface is stepped and is provided with a rubber protection layer, the discharging barrel is positioned between the extrusion surfaces of the two extrusion pieces, and the two extrusion pieces can be separated from extrusion of the discharging barrel when moving to the expanding part.

Preferably, the two limiting sliding grooves are respectively and fixedly provided with a second elastic piece, the second elastic pieces are positioned on one side, far away from the annular piece, of the extrusion piece, and the second elastic pieces are fixedly connected with the limiting sliding blocks.

Preferably, the outer wall of the first pipeline is rotatably provided with a winding shaft, a rope is wound on the outer peripheral side of the winding shaft, one end of the rope is fixedly connected with the winding shaft, and the other end of the rope stretches into the first pipeline and is fixedly connected with the two limiting sliding blocks respectively.

Preferably, the discharging barrel is further provided with an everting part, the everting part is located at one end, far away from the annular piece, of the expanding part, the everting part is elastic, a plurality of second driving rods are rotatably installed on the outer ring side of the annular piece, and second installation seats which are consistent in number and in one-to-one correspondence with the second driving rods are fixedly arranged on the outer side face of the expanding part.

Preferably, the second mounting seat is long strip-shaped and is internally provided with a matching sliding groove, the second driving rod is slidably connected in the matching sliding groove, one end of the second driving rod, which is close to the annular piece, is rotationally connected with the annular piece, one end, which is far away from the annular piece, of the second mounting seat is rotationally provided with a third driving rod, the third driving rod is provided with a first driving arm and a second driving arm, one end, which is far away from the second driving arm, of the first driving arm is rotationally connected with the second mounting seat, one end, which is far away from the first driving arm, of the second driving arm is fixedly connected with one end, which is far away from the annular piece, of the second driving rod is blocked and abutted with one end, which is close to the second driving arm, of the first driving arm.

Preferably, the inner diameter of the first pipeline is consistent with the inner diameter of the pipeline portion and the inner diameter of the connecting portion, the inner diameter of one end, close to the connecting portion, of the flaring portion is consistent with the inner diameter of the connecting portion, the inner diameter of one end, far away from the connecting portion, of the flaring portion is larger than the inner diameter of the connecting portion, the knife gate valve further comprises a gate plate, the gate plate is connected with the pipeline portion in a sealing sliding manner, and a plugging groove for plugging the gate plate is formed in the pipeline portion.

By adopting the technical scheme, the invention has the beneficial effects that:

1. two extrusions can extrude the feed cylinder when sliding to the direction that is close to the sugar storage jar along the axial of connecting portion, and then make the feed cylinder blocked to syrup in the feed cylinder can not outwards release through extension, at this in-process, a plurality of first actuating levers can rotate to the inner ring side of annular piece simultaneously, and then make extension by the shrink, thereby be favorable to avoiding syrup to flow from extension, then through control knife gate valve, the flashboard can move down smoothly and peg graft in the jack-in groove, and then be favorable to guaranteeing knife gate valve's leakproofness.

2. When releasing syrup, extension can expand outward and form loudspeaker column structure, simultaneously, the second actuating lever can push away the third actuating lever to the direction that is close to the portion of turning up in order to make the third actuating lever take place to rotate, and then make the second actuating arm drive the portion of turning up and form into the shape of turning up, this just makes syrup can not keep away from the one end contact of extension with the portion of turning up at the in-process of release, thereby when stopping releasing syrup, can not have remaining syrup from the portion of turning up drip in spliced groove or pipeline portion, and then be favorable to improving the sealed effect of knife gate valve.

Drawings

Fig. 1 is a schematic perspective view of a first embodiment of the present invention.

Fig. 2 is a partial cross-sectional view of a first embodiment of the present invention.

Fig. 3 is a schematic view illustrating the cooperation of the annular member with the discharge barrel and the driving assembly according to the first embodiment of the present invention.

Fig. 4 is an enlarged schematic view at a in fig. 3.

FIG. 5 is a schematic illustration of the mating of an extrusion with a telescoping rod of the present invention.

Fig. 6 is a cross-sectional view of the knife gate valve, first conduit and second conduit of the present invention.

Fig. 7 is an enlarged schematic view at B in fig. 6.

Fig. 8 is a schematic diagram illustrating the cooperation between the everting portion and the third driving rod according to the second embodiment of the present invention.

Fig. 9 is an enlarged schematic view at C in fig. 8.

Reference numerals: 10. a knife gate valve; 101. a flashboard; 102. a pipe section; 103. a plug-in groove; 11. a first pipe; 111. a guide ring; 12. a second pipe; 121. an outer expansion part; 122. a connection part; 20. a discharging cylinder; 201. an expansion section; 202. an everting portion; 21. a ring member; 220. a roller; 221. a first mount; 222. a shaft lever; 223. a first driving lever; 224. a first elastic member; 23. a second driving lever; 231. a second mounting base; 24. a third driving lever; 241. a first driving arm; 242. a second driving arm; 31. limiting sliding grooves; 311. a second elastic member; 32. an extrusion; 321. a limit sliding block; 33. a telescopic rod; 34. a winding shaft; 341. a hand wheel; 35. a rope.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1-6, a first embodiment of a liquid discharging valve is provided, which includes a knife gate 10, a first pipe 11 and a second pipe 12, where the knife gate 10, the first pipe 11 and the second pipe 12 are all located outside a sugar tank, the knife gate 10 is installed between the first pipe 11 and the second pipe 12, and the knife gate 10 is connected with the first pipe 11 and the second pipe 12 in a sealing manner, one end of the first pipe 11 far from the knife gate 10 is connected with the sugar tank, the second pipe 12 includes an expansion part 121 and a connection part 122, the connection part 122 is connected with the knife gate 10 in a sealing manner, the expansion part 121 is in a horn shape, the knife gate 10 includes a gate 101 and a pipe part 102, the gate 101 is connected with the pipe part 102 in a sealing sliding manner, and in the pipe part 102, in this embodiment, the knife gate 10 can be separated by adopting a pneumatic control manner, so that the gate 101 can open the plug slot 103 or the first pipe 11 is connected with the second pipe 11 or the second pipe 12 in a sealing manner.

It should be noted that the inner diameter of the first pipe 11 is identical to the inner diameter of the pipe portion 102 and the inner diameter of the connecting portion 122, the inner diameter of the end of the flared portion 121 near the connecting portion 122 is identical to the inner diameter of the connecting portion 122, and the inner diameter of the end of the flared portion 121 far from the connecting portion 122 is larger than the inner diameter of the connecting portion 122.

With continued reference to fig. 1-6, the inner peripheral wall of the first pipe 11 is fixedly provided with the discharging tube 20, the discharging tube 20 extends along the axial direction of the first pipe 11, the discharging tube 20 is made of elastic materials, one end of the discharging tube 20, which is close to the sugar storage tank, is in sealing connection with the inner peripheral wall of the discharging tube 20, so that syrup in the sugar storage tank can pass through the discharging tube 20, an annular piece 21 is fixedly arranged on the outer peripheral side of one end, which is far away from the sugar storage tank, of the discharging tube 20, an expansion part 201 is arranged on one side, which is far away from the sugar storage tank, of the annular piece 21, and the expansion part 201 is provided with elasticity, a plurality of groups of driving components are arranged at intervals on the outer peripheral side of the annular piece 21, each driving component comprises a roller 220 which is rotatably arranged on the outer peripheral side of the annular piece 21, the roller 220 is made of rubber materials, the roller 220 can be in rolling contact with the inner peripheral wall of the pipe part 102, the inner peripheral wall of the first pipe 11 and the inner peripheral wall 122, a first connecting part 122, a first mounting seat 221 is fixedly arranged on the outer peripheral wall of the annular piece 21, an annular piece 222 is rotatably arranged on the outer peripheral wall of the annular piece 21, an expansion part is rotatably arranged on the peripheral wall 222, the annular piece is coaxially arranged on the peripheral wall 222, the annular piece is rotatably arranged on the outer peripheral wall 222, the annular piece is required to be a shaft 222, and the first annular piece is rotatably arranged on the outer peripheral piece 222 and is a shaft piece, which is rotatably, and is arranged on the outer side of the annular piece, and the first annular piece is a rotating shaft piece 223, and is a rotating shaft piece is arranged, and is connected with the first annular piece, and is made of a rotating shaft piece and is made of a roller, and a roller, and a roller is mounted.

As shown in fig. 1-7, two limit sliding grooves 31 are formed in the inner wall of the first pipeline 11, the two limit sliding grooves 31 are located on the outer side of the discharging barrel 20, the limit sliding grooves 31 extend to one end far away from the sugar storage tank and are sequentially arranged on the pipeline portion 102 and the inner wall of the second pipeline 12, the two limit sliding grooves 31 are symmetrically arranged, the limit sliding grooves 31 are of a T shape, extrusion parts 32 are slidably mounted in the two limit sliding grooves 31 respectively, the two extrusion parts 32 are movably connected and located on one side, close to the sugar storage tank, of the annular piece 21, specifically, limit sliding blocks 321 are respectively arranged on one side, far away from each other, of the two extrusion parts 32, the limit sliding blocks 321 are of a T shape, so that the extrusion parts 32 can be stably mounted in the limit sliding grooves 31 through the limit sliding blocks 321, telescopic rods 33 are mounted between the two extrusion parts 32, two ends of the telescopic rods 33 are respectively located at the upper end and lower end of the extrusion parts 32, two opposite sides of the two extrusion parts 32 are respectively in rotary connection, extrusion surfaces are respectively provided with extrusion surfaces, the extrusion surfaces are respectively provided with rubber protection layers, and the discharging barrel 20 is located between the extrusion surfaces of the two extrusion parts 32.

It should be noted that the second elastic member 311 is fixedly installed in the two limiting sliding grooves 31 respectively, the second elastic member 311 is specifically a second spring, the second elastic member 311 extends along the length extending direction of the limiting sliding groove 31, the second elastic member 311 is located at one side of the extrusion member 32 away from the annular member 21, the second elastic member 311 is fixedly connected with the limiting sliding block 321, the rolling shaft 34 is rotatably installed on the outer wall of the first pipeline 11, the rope 35 is wound on the outer peripheral side of the rolling shaft 34, one end of the rope 35 is fixedly connected with the rolling shaft 34, the other end of the rope 35 stretches into the first pipeline 11 and is fixedly connected with the two limiting sliding blocks 321 respectively, and it should be noted that one section of the rope 35 located in the first pipeline 11 is located between the inner side wall of the first pipeline 11 and the outer side wall of the discharge barrel 20, so that the two extrusion members 32 can slide along the limiting sliding grooves 31 simultaneously, in addition, when the two extrusion members 32 slide to the outer expansion part 121, the two extrusion members 32 can be separated from the clamping of the discharge barrel 20, so that syrup can smoothly flow out of the discharge barrel 20, and the extrusion member 21 can be expanded to the outer annular member 201 at the same time by rotating the outer annular member 201 under the action of the first driving rod 224.

It will be appreciated that, in order to facilitate driving the winding shaft 34 to rotate, in this embodiment, a hand wheel 341 may be installed at the upper end of the winding shaft 34, in other embodiments, the rotation of the winding shaft 34 may also be controlled by installing a motor on the first pipe 11, in order to pull the extrusion 32 to slide along the limit chute 31 better through the rope 35, a guide ring 111 is fixedly installed in the limit chute 31, the guide ring 111 is located at one end of the second elastic member 311 away from the extrusion 32, and the rope 35 is fixedly connected with the limit slider 321 after passing through the guide ring 111.

The specific working principle is as follows: in the initial state, the shutter 101 is in a state of separating the first pipe 11 from the second pipe 12, at this time, the discharge tube 20 is completely moved into the first pipe 11, at this time, the second elastic member 311 is compressed, at this time, the annular member 21 and the two pressing members 32 are both moved into the first pipe 11, at this time, the stepped pressing surfaces of the two pressing members 32 tightly clamp the discharge tube 20, so that the syrup in the sugar storage tank cannot flow out from the discharge tube 20, and at this time, the expansion portion 201 is in the contracted state.

When syrup is required to be released, the knife gate valve 10 is controlled first, the gate plate 101 is moved upwards, the first pipeline 11 and the second pipeline 12 are in a communicated state, the two extrusion pieces 32 can move along the limit chute 31 towards the direction close to the expanding part 121 under the pressure action of syrup in the sugar storage tank, when the two extrusion pieces 32 slide to the expanding part 121, the two extrusion pieces 32 are in a mutually separated state and separate from the clamping of the discharging barrel 20, the second elastic piece 311 is stretched, the first driving rods 223 can simultaneously rotate towards the outer ring side of the annular piece 21 under the action of the first elastic piece 224, the expanding part 201 is expanded outwards to form a horn-shaped structure, the syrup can smoothly flow out of the sugar storage tank from the expanding part 201, and the syrup cannot contact with the gate plate 101.

When the syrup is required to be released, the rope 35 is wound on the winding shaft 34 by driving the winding shaft 34 to rotate, in the process, the rope 35 pulls the two extrusion pieces 32 to move towards the direction close to the sugar storage tank, when the two extrusion pieces 32 slide to the connecting part 122, the stepped extrusion surfaces of the two extrusion pieces 32 can tightly clamp the discharge barrel 20, so that the syrup stops flowing outwards, the discharge barrel 20 can move towards the direction close to the sugar storage tank under the clamping action of the extrusion pieces 32 along with the continuous winding of the rope 35, and the plurality of first driving rods 223 can simultaneously rotate towards the inner ring side of the annular piece 21, so that the expansion part 201 is contracted, thereby being beneficial to avoiding the syrup from flowing out of the expansion part 201, and when the discharge barrel 20, the annular piece 21 and the two extrusion pieces 32 are all moved into the first pipeline 11, the gate valve 10 can be smoothly moved downwards and inserted into the inserting groove 103 by controlling the gate valve 10, and the sealing performance of the gate valve 10 is further beneficial to be ensured.

In order to reduce the occurrence of the phenomenon that the syrup adheres to the end of the expansion part 201 far from the annular part 21 when the syrup is released through the discharging barrel 20, thereby being beneficial to avoiding the phenomenon that the syrup adhered in the expansion part 201 falls into the inserting groove 103 when the expansion part 201 is contained into the first pipeline 11, and further affecting the tightness of the knife gate valve 10, the invention also provides a second embodiment.

As shown in fig. 1-9, the discharging barrel 20 further has an everting portion 202, the everting portion 202 is located at one end of the expanding portion 201 far away from the ring member 21, the everting portion 202 has elasticity, a plurality of second driving rods 23 are rotatably installed on the outer ring side of the ring member 21, the second driving rods 23 are located between two adjacent first driving rods 223, specifically, second mounting seats 231 which are consistent in number and one-to-one corresponding to the second driving rods 23 are fixedly arranged on the outer side surface of the expanding portion 201, in this embodiment, the second mounting seats 231 are in a strip shape and are internally provided with matching sliding grooves, the second driving rods 23 are slidably connected in the matching sliding grooves, and one end of each second driving rod 23 close to the ring member 21 is rotatably connected with the ring member 21.

The third driving rod 24 is rotatably installed at one end, far away from the annular piece 21, of the second installation seat 231, the third driving rod 24 is provided with a first driving arm 241 and a second driving arm 242, the first driving arm 241 and the second driving arm 242 form an L-shaped structure, one end, far away from the second driving arm 242, of the first driving arm 241 is rotatably connected with the second installation seat 231, one end, far away from the first driving arm 241, of the second driving arm 242 is fixedly connected with one end, far away from the annular piece 21, of the everting portion 202, and one end, far away from the annular piece 21, of the second driving rod 23 is abutted against one end, close to the second driving arm 242, of the first driving arm 241.

The specific working principle is as follows: when syrup is released, the expansion part 201 expands outwards and forms a horn-shaped structure, meanwhile, the second driving rod 23 pushes the third driving rod 24 towards the direction close to the everting part 202 so that the third driving rod 24 rotates, and the second driving arm 242 drives the everting part 202 to deform into an everting shape, so that the syrup cannot contact with one end, far away from the expansion part 201, of the everting part 202 in the release process, and therefore when syrup release is stopped, residual syrup cannot drop into the inserting groove 103 or the pipeline part 102 from the everting part 202, and the sealing effect of the knife gate valve 10 is improved.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. The utility model provides a liquid bleeder valve, includes knife gate valve (10), knife gate valve (10) include pipeline portion (102) first pipeline (11) are installed to the one end of knife gate valve (10), first pipeline (11) are linked together with storing up the sugar jar, its characterized in that still includes:

a second pipe (12), the second pipe (12) is arranged at the other end of the knife gate valve (10), the second pipe (12) comprises an external expansion part (121) and a connecting part (122), the connecting part (122) is connected with the pipe part (102) in a sealing way, and the knife gate valve (10) is used for controlling the first pipe (11) to be communicated with or separated from the second pipe (12);

the discharging barrel (20), discharging barrel (20) is made of elastic materials, discharging barrel (20) is installed in first pipeline (11) and is connected with the inner peripheral wall of first pipeline (11) in a sealing mode, annular parts (21) are fixedly arranged on the outer peripheral side of one end, far away from the sugar storage tank, of discharging barrel (20), an expanding part (201) is arranged on one end, far away from the sugar storage tank, of discharging barrel (20), the expanding part (201) is elastic, multiple groups of driving components are arranged on the outer ring side of annular parts (21) at intervals, each driving component comprises a first driving rod (223) rotatably installed on the outer ring side of annular parts (21), and one end, far away from annular parts (21), of each first driving rod (223) is fixedly connected with the outer side face of each expanding part (201);

the two extrusion parts (32), two extrusion parts (32) are movably connected, the two extrusion parts (32) are located on one side, close to the sugar storage tank, of the annular piece (21), and the two extrusion parts (32) can extrude the discharging barrel (20) when sliding along the axial direction of the connecting part (122) towards the direction, close to the sugar storage tank.

2. A liquid discharge valve according to claim 1, wherein the driving assembly comprises a roller (220) rotatably mounted on the outer ring side of the ring member (21), the roller (220) being capable of rolling contact with the inner peripheral wall of the pipe portion (102), the inner peripheral wall of the first pipe (11) and the inner peripheral wall of the connecting portion (122), a shaft (222) being fixedly mounted coaxially on the roller (220), the first driving lever (223) being connected to the shaft (222) by a first elastic member (224).

3. The liquid discharge valve according to claim 1, wherein the expanding portion (121) is located at one end of the connecting portion (122) away from the pipe portion (102), the expanding portion (121) is in a horn shape, the annular piece (21) can drive the first driving rod (223) to rotate when moving towards the direction close to the sugar storage tank, so that the expanding portion (201) is contracted inwards, when the annular piece (21) moves to the expanding portion (121), the first driving rod (223) can drive the expanding portion (201) to expand outwards and form a horn-shaped structure, two limiting sliding grooves (31) are formed in the inner wall of the first pipe (11), the limiting sliding grooves (31) extend towards one end away from the sugar storage tank and are sequentially arranged on the inner wall of the pipe portion (102) and the inner wall of the second pipe (12), and the two limiting sliding grooves (31) are located on the outer side of the discharge cylinder (20).

4. A liquid discharge valve according to claim 3, wherein two of said pressing members (32) are provided with a stopper slider (321) cooperating with a stopper chute (31) on a side away from each other, a telescopic rod (33) is installed between the two pressing members (32), both ends of said telescopic rod (33) are rotatably connected with the two pressing members (32), and opposite sides of the two pressing members (32) are provided with pressing surfaces, respectively.

5. A liquid discharge valve according to claim 4, characterized in that the pressing surfaces are stepped and the pressing surfaces are provided with a rubber protection layer, the discharge vessel (20) is located between the pressing surfaces of two pressing members (32), and the pressing members (32) can be separated from the pressing of the discharge vessel (20) when moving to the flaring portion (121).

6. A liquid discharge valve according to claim 3, wherein a second elastic member (311) is fixedly installed in each of the two limiting sliding grooves (31), the second elastic member (311) is located at one side of the extrusion member (32) away from the annular member (21), and the second elastic member (311) is fixedly connected with the limiting sliding block (321).

7. The liquid discharge valve according to claim 4, wherein a winding shaft (34) is rotatably mounted on the outer wall of the first pipe (11), a rope (35) is wound around the outer peripheral side of the winding shaft (34), one end of the rope (35) is fixedly connected with the winding shaft (34), and the other end of the rope (35) extends into the first pipe (11) and is fixedly connected with two limit sliding blocks (321) respectively.

8. A liquid discharge valve according to claim 3, wherein the discharge cylinder (20) further has an everting portion (202), the everting portion (202) is located at one end of the expanding portion (201) far away from the annular member (21), the everting portion (202) has elasticity, a plurality of second driving rods (23) are rotatably mounted on the outer ring side of the annular member (21), and second mounting seats (231) which are consistent in number and in one-to-one correspondence with the second driving rods (23) are fixedly arranged on the outer side surface of the expanding portion (201).

9. A liquid discharge valve according to claim 8, wherein the second mounting seat (231) is in a strip shape and is internally provided with a matching chute, the second driving rod (23) is slidably connected in the matching chute, one end of the second driving rod (23) close to the annular member (21) is rotationally connected with the annular member (21), a third driving rod (24) is rotationally mounted at one end of the second mounting seat (231) far away from the annular member (21), the third driving rod (24) is provided with a first driving arm (241) and a second driving arm (242), one end of the first driving arm (241) far away from the second driving arm (242) is rotationally connected with the second mounting seat (231), one end of the second driving arm (242) far away from the first driving arm (241) is fixedly connected with one end of the everting part (202) far away from the annular member (21), and one end of the second driving rod (23) far away from the annular member (21) is rotationally connected with one end of the first driving arm (241) near the second driving arm (242).

10. A liquid discharge valve according to any one of claims 3-9, wherein the inner diameter of the first pipe (11) is identical to the inner diameter of the pipe portion (102) and the inner diameter of the connecting portion (122), the inner diameter of the end of the flared portion (121) close to the connecting portion (122) is identical to the inner diameter of the connecting portion (122), the inner diameter of the end of the flared portion (121) far away from the connecting portion (122) is larger than the inner diameter of the connecting portion (122), the knife gate valve (10) further comprises a gate plate (101), the gate plate (101) is connected with the pipe portion (102) in a sealing sliding manner, and a plugging groove (103) for plugging the gate plate (101) is formed in the pipe portion (102).