A forced discharge liquid control valve for an inverted sealed bottle

Abstract

The present invention is applicable to the field of control valves, and provides a forced liquid discharge control valve for an inverted sealed bottle, the forced liquid discharge control valve comprising a valve body in a double-layer cylinder structure for installation on an inverted sealed bottle, a blocking mechanism arranged at the top of the inner cylinder of the valve body for liquid discharge and gas intake, a valve core mechanism arranged at the bottom of the inner cylinder of the valve body and forming a cavity A in the inner cylinder of the valve body with the blocking mechanism, and a liquid discharge mechanism arranged in the inner cylinder of the valve body and connected to the valve core mechanism and rebounding through a compression spring. The invention solves the technical problem that the control valve cannot be used to compensate for gas and liquid leakage inside the inverted sealed bottle in the prior art.

Description

Technical Field

[0001] The invention belongs to the field of liquid control valves, and in particular relates to a forced liquid discharge control valve for an inverted sealed bottle. Background Art

[0002] The existing inverted liquid bottle cap valve is composed of two interlocking one-way valves connected in series. The cap valve itself does not have the function of compensating for the gas in the bottle. When the cap valve is used with a soft sealed bottle body, it mainly relies on the compression of the soft bottle body to discharge the liquid in the sealed bottle; when the cap valve is used with a hard bottle, a device that can allow ambient air to enter must be provided at the bottom of the bottle (the top when inverted), that is, the hard bottle body is not a sealed bottle body at this time.

[0003] The cover valve is composed of two interlocked one-way valves connected in series. When the valve core reciprocates, the two one-way valves are alternately closed and opened to complete the discharge of the liquid in the bottle. The cover valve does not have a device to compensate for the gas inside the bottle, which makes it difficult to discharge the liquid. In order to compensate for the air in the liquid bottle, a vent or a gas compensation device is opened at the bottom of the bottle (the upper end of the bottle when inverted). This bottle needs to be equipped with a device with a sealed bottle body during the transportation of pre-filled liquid. When in use, the sealing device must be released from its sealed state. The liquid in the bottle will always be connected to the ambient air, causing the liquid to evaporate and become more viscous, making it difficult to discharge the liquid or even failing to discharge the liquid. At the same time, the liquid in the bottle will also be contaminated, or it cannot be used for the storage and transportation of pre-filled liquid and can only be used for secondary filling, thereby increasing the complexity of the application and the probability of liquid volatilization and contamination. Summary of the invention

[0004] The purpose of the present invention is to provide a forced liquid discharge control valve for an inverted sealed bottle, aiming to solve the technical problem in the prior art that the control valve cannot be used to compensate for gas and liquid leakage inside the inverted sealed bottle.

[0005] The present invention is implemented as follows: a forced liquid discharge control valve for an inverted sealed bottle, the forced liquid discharge control valve includes a valve body with a double-layer cylinder structure for installation on an inverted sealed bottle, a blocking mechanism arranged at the top of the inner cylinder of the valve body for liquid discharge and air intake, a valve core mechanism arranged at the bottom of the inner cylinder of the valve body and forming a cavity A in the inner cylinder of the valve body with the blocking mechanism, and a liquid discharge mechanism arranged in the inner cylinder of the valve body, connected to the valve core mechanism and performing rebound movement through a compression spring.

[0006] A further technical solution of the present invention is: the inner tube of the valve body is a stepped cylindrical structure, the inner surface of the top end of the outer tube of the valve body is provided with a thread for installation on an inverted sealed bottle, a concave plane for placing a sealing gasket is provided at the connection between the inner tube of the valve body and the outer tube, a circle of rubber bone for enhancing the sealing performance is provided on the concave plane, a rubber column for positioning and fixing the blocking mechanism is provided at the top end of the inner tube of the valve body, and a plurality of barbs for preventing the liquid outlet mechanism from slipping out are provided on the inner side of the bottom end of the outer tube of the valve body.

[0007] A further technical solution of the present invention is: the blocking mechanism includes an end cover with a downwardly extending cup wall arranged on the inner tube of the valve body, the downwardly extending cup wall of the end cover is provided with a first cup-shaped thin-walled ring which is interference fit with the inner diameter of the inner tube of the valve body for performing a one-way sealing function, the end cover is provided with a rubber column hole used in conjunction with the rubber column, and the end cover is provided with a through hole for liquid discharge and air intake.

[0008] A further technical solution of the present invention is: the blocking mechanism also includes a blocking valve with a top end penetrating through the through hole and a bottom end placed in the cup wall extending downward from the end cover; a blocking plate is arranged at the top of the blocking valve to prevent the blocking valve from slipping out of the through hole; a second cup-shaped thin-walled ring is provided on the blocking valve to have an interference fit with the inner diameter of the cup wall extending downward from the end cover for a one-way sealing effect; the bottom end of the blocking valve is a flat structure and has a blocking through hole.

[0009] A further technical solution of the present invention is: the blocking mechanism also includes two levers, one end of which is inserted in the blocking through hole and the other end is in contact with the inner tube of the valve body to drive the blocking valve to move up and down, and lever shafts connected to the bottom of the cup wall extending downward from the end cover are arranged on both sides of the lever, and a lever shaft mounting position for installing the lever shaft is arranged at the bottom of the cup wall extending downward from the end cover.

[0010] A further technical solution of the present invention is: the valve core mechanism includes a valve core with a through hole, a disc-shaped body arranged at the top of the valve core and sealed on the through hole and interference fit with the inner diameter of the inner tube of the valve body, a third cup-shaped thin-walled ring arranged at the upper end of the valve core and connected to the valve core and interference fit with the inner diameter of the inner tube of the valve body for one-way sealing, a fourth cup-shaped thin-walled ring arranged on the valve core and interference fit with the inner diameter of the inner tube of the valve body and forming a B cavity with the third cup-shaped thin-walled ring for one-way sealing, and a connecting nozzle arranged at the bottom end of the valve core with a convex mark for connecting the liquid outlet mechanism, a disc-shaped body through hole is arranged on the disc-shaped body, and a side hole connected to the through hole is arranged on the valve core in the B cavity formed by the third cup-shaped thin-walled ring, the fourth cup-shaped thin-walled ring and the bottom cylindrical surface of the inner layer of the valve body.

[0011] A further technical solution of the present invention is that: a plurality of reinforcing ribs having the same diameter as the inner tube of the valve body are arranged at the bottom of the valve core.

[0012] A further technical solution of the present invention is: the liquid outlet mechanism includes a liquid outlet nozzle in a stepped cone shape, the top of the liquid outlet nozzle is provided with a blocking protrusion used in conjunction with the barb, the bottom of the liquid outlet nozzle is provided with a connecting position with a recess used in conjunction with the connecting nozzle, and the connecting position is provided with a liquid outlet hole connected to the through hole.

[0013] A further technical solution of the present invention is: the forced liquid discharge control valve also includes a protective cover for covering the forced liquid discharge control valve, and the valve body is made of polypropylene material.

[0014] A further technical solution of the present invention is: the inner tube of the valve body is a stepped cylindrical shape, the top diameter of the inner tube of the valve body is larger than the outer diameter of the third cup-shaped thin-walled ring, the bottom diameter of the inner tube of the valve body is smaller than the outer diameter of the third cup-shaped thin-walled ring, and a bevel transition is used at different diameters of the inner tube of the valve body.

[0015] The beneficial effects of the present invention are as follows: the production and assembly of this forced discharge liquid control valve is simple and quick, the production cost is low, it can be directly used for the transportation of filled liquid, and can be directly applied to predetermined equipment and devices. During use, the liquid in the sealed bottle is in a sealed state, the liquid is non-volatile and pollution-free, and it is widely compatible with sealed bottles of different hardness materials. When the liquid in the bottle is used up, the pre-filled liquid bottle can be directly replaced without secondary filling. It is convenient and simple, and can be independently in different working states. Each process of emptying, absorbing liquid, discharging liquid, gas compensation, etc. is relatively independent. In the non-working state, the liquid cavity and the outlet are independently cut off, and there will be no leakage or dripping of liquid. The gas compensation in the sealed liquid bottle is actively forced to ensure smooth liquid discharge. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural cross-sectional view of a forced liquid discharge control valve for an inverted sealed bottle provided by an embodiment of the present invention;

[0017] Figure 2 It is an exploded view of a forced liquid discharge control valve for an inverted sealed bottle provided by an embodiment of the present invention;

[0018] Figure 3 It is a cross-sectional view of the valve body structure of a forced liquid discharge control valve for an inverted sealed bottle provided by an embodiment of the present invention;

[0019] Figure 4 The invention provides an end cap structure of a forced liquid discharge control valve for an inverted sealed bottle. Figure 1 ;

[0020] Figure 5 The invention provides an end cap structure of a forced liquid discharge control valve for an inverted sealed bottle. Figure 2 ;

[0021] Figure 6 It is a cross-sectional view of the end cover structure of a forced liquid discharge control valve for an inverted sealed bottle provided by an embodiment of the present invention;

[0022] Figure 7 It is a structural diagram of a blocking valve of a forced liquid discharge control valve of an inverted sealed bottle provided by an embodiment of the present invention;

[0023] Figure 8 It is a cross-sectional view of a blocking valve of a forced liquid discharge control valve of an inverted sealed bottle provided by an embodiment of the present invention;

[0024] Fig. 9 The invention provides a valve core structure of a forced liquid discharge control valve for an inverted sealed bottle. Figure 1 ;

[0025] Fig.10 The invention provides a valve core structure of a forced liquid discharge control valve for an inverted sealed bottle. Figure 2 ;

[0026] Fig.11 It is a schematic diagram of emptying a forced liquid discharge control valve of an inverted sealed bottle provided by an embodiment of the present invention;

[0027] Fig.12 It is a schematic diagram of liquid suction of a forced liquid discharge control valve of an inverted sealed bottle provided by an embodiment of the present invention;

[0028] Fig.13 This is a diagram of the liquid suction completion state of a forced liquid discharge control valve of an inverted sealed bottle provided by an embodiment of the present invention;

[0029] Fig.14 It is a schematic diagram of liquid discharge of a forced liquid discharge control valve of an inverted sealed bottle provided by an embodiment of the present invention;

[0030] Fig.15 It is a schematic diagram of air compensation of a forced liquid discharge control valve of an inverted sealed bottle provided in an embodiment of the present invention. DETAILED DESCRIPTION

[0031] Figure markings: 1-sealing bottle 2-valve body 3-blocking mechanism 4-valve core mechanism 5-A chamber 6-compression spring 7-liquid outlet mechanism 8-sealing pad 9-protective cover 10-thread 11-concave plane 12-rubber bone 13-rubber column 14-barb 15-through hole 16-valve core 17-disc body 18-third cup-shaped thin-walled ring 19-B chamber 20-fourth cup-shaped thin-walled ring 21-convex mark 22-connecting nozzle 23-disc body through hole 24-side hole 25-reinforcement rib 26-end cover 27-first cup-shaped thin-walled ring 28-rubber column hole 29-through hole 30-drivable rod shaft installation position 31-blocking valve 32-blocking plate 33-second cup-shaped thin-walled ring 34-blocking through hole 35-drivable rod 36-drivable rod shaft 37-liquid outlet nozzle 38-blocking convex 39-concave mark 40-connecting position 41-liquid outlet hole.

[0032] Figure 1-15 A forced liquid discharge control valve for an inverted sealed bottle provided by the present invention is shown, the forced liquid discharge control valve includes a valve body 2 with a double-layer cylinder structure for installation on an inverted sealed bottle 1, a blocking mechanism 3 arranged at the top of the inner cylinder of the valve body 2 for liquid discharge and air intake, a valve core mechanism 4 arranged at the bottom of the inner cylinder of the valve body 2 and forming a cavity A 5 in the inner cylinder of the valve body 2 together with the blocking mechanism 3, and a liquid discharge mechanism 7 arranged in the inner cylinder of the valve body 2, connected to the valve core mechanism 4 and performing rebound movement through a compression spring 6.

[0033] The inner tube of the valve body 2 is a stepped cylindrical structure, the inner surface of the top of the outer tube of the valve body 2 is provided with a thread 10 for mounting on the inverted sealed bottle 1, the connection between the inner tube and the outer tube of the valve body 2 is provided with a concave plane 11 for placing the sealing gasket 8, and a circle of rubber bones 12 for enhancing the sealing performance is provided on the concave plane 11, the top of the inner tube of the valve body 2 is provided with a rubber column 13 for positioning and fixing the blocking mechanism 3, and the inner side of the bottom of the outer tube of the valve body 2 is provided with a plurality of barbs 14 for preventing the liquid outlet mechanism 7 from slipping out. The forced liquid control valve is fixed to the sealed bottle 1 by the thread 10, which is convenient for disassembly and installation.

[0034] The blocking mechanism 3 includes an end cap 26 with a cup wall extending downwardly and covering the inner layer of the valve body 2, and a first cup-shaped thin-walled ring 27 is provided on the cup wall extending downwardly and having an interference fit with the inner diameter of the inner layer of the valve body for one-way sealing, and a rubber column hole 28 used in conjunction with the rubber column 13 is provided on the end cap 26, and a through hole 29 for liquid discharge and air intake is provided on the end cap 26. The end cap 26 is made of elastic polyethylene material.

[0035] The blocking mechanism 3 also includes a blocking valve 31 with a top end penetrating through the through hole 29 and a bottom end disposed in the cup wall extending downward from the end cover 26. A blocking piece 32 is provided at the top of the blocking valve 31 to prevent the blocking valve 31 from slipping out of the through hole 29. A second cup-shaped thin-walled ring 33 is provided on the blocking valve 31 to have an interference fit with the inner diameter of the cup wall extending downward from the end cover 26 for a one-way sealing effect. The bottom end of the blocking valve 31 is a flat structure and has a blocking through hole 34.

[0036] The blocking mechanism 3 also includes two levers 35, one end of which is inserted in the blocking through hole 34 and the other end is in contact with the inner tube of the valve body 2 for driving the blocking valve 31 to move up and down. Both sides of the lever 35 are provided with lever shafts 36 connected to the bottom of the cup wall extending downward from the end cover 26, and the bottom of the cup wall extending downward from the end cover 26 is provided with a lever shaft mounting position 30 for mounting the lever shaft 36.

[0037] The valve core mechanism 4 includes a valve core 16 with a through hole 15, a disc-shaped body 17 arranged at the top of the valve core 16 and sealed on the through hole 15 and interference fit with the inner diameter of the inner tube of the valve body 2, a third cup-shaped thin-walled ring 18 arranged at the upper end of the valve core 16, connected to the valve core 16 and interference fit with the inner diameter of the inner tube of the valve body 2 for one-way sealing, a fourth cup-shaped thin-walled ring 20 arranged on the valve core 16, interference fit with the inner diameter of the inner tube of the valve body 2 and forming a B cavity 19 with the third cup-shaped thin-walled ring 18 for one-way sealing, and a connecting nozzle 22 with a convex mark 21 at the bottom end of the valve core 16 for connecting to the liquid outlet mechanism 7, a disc-shaped body through hole 23 is arranged on the disc-shaped body 17, and the valve core 16 is provided with a side hole 24 connected with the through hole 15 on the B cavity 19 formed by the third cup-shaped thin-walled ring 18 and the fourth cup-shaped thin-walled ring 20. The bottom of the valve core 16 is provided with a plurality of reinforcing ribs 25 having the same diameter as the inner tube of the valve body 2 .

[0038] The liquid outlet mechanism 7 includes a liquid outlet nozzle 37 in a stepped cone shape, the top of the liquid outlet nozzle 37 is provided with a blocking protrusion 38 used in conjunction with the barb 14, the bottom of the liquid outlet nozzle 37 is provided with a connecting position 40 used in conjunction with the connecting nozzle 22 and having a dent 39, and the connecting position 40 is provided with a liquid outlet hole 41 connected to the through hole 15. The entire liquid outlet mechanism 7 is integrally formed, and the liquid outlet mechanism 7 is made of polyethylene material.

[0039] The forced liquid discharge control valve further includes a protective cover 9 for covering the forced liquid discharge control valve, and the valve body 2 is made of polypropylene. The inner tube of the valve body 2 is a stepped cylindrical shape, the top diameter of the inner tube of the valve body 2 is larger than the outer diameter of the third cup-shaped thin-walled ring 18, and the bottom diameter of the inner tube of the valve body 2 is smaller than the outer diameter of the third cup-shaped thin-walled ring 18. The inner tube of the valve body 2 has different diameters and adopts a bevel transition.

[0040] When in use, this type of forced discharge liquid control valve will go through the following working principles:

[0041] During the emptying process of the control valve of the forced liquid discharge control valve, when the control valve is opened for the first time, the combination of the valve core mechanism 4 and the liquid outlet mechanism 7 is at the lowermost end of the inner tube of the valve body 2 under the action of the compression spring 6. At this time, the control valve is filled with no liquid except air. Under the action of external force, the liquid outlet mechanism 7 is pushed upward, the compression spring 6 is compressed, the volume of the A chamber 5 of the valve body becomes smaller, and the air in the A chamber 5 is compressed. At this time, the volume of the B chamber 19 does not change. At the same time, the B chamber 19 is connected with the environment through the side hole 24 and the through hole 15. At this time, the high-pressure air in the A chamber 5 can enter the B chamber 19 through the third cup-shaped thin-walled ring 18 at the upper end of the valve core 16 and then enter the environment, so as to empty the air in the control valve until the pressure in the control valve is the same as the ambient pressure, and the control valve is emptied.

[0042] During the liquid suction process of the forced liquid discharge control valve, when the control valve is emptied, the valve core mechanism 4 is at the highest point in the control valve, and the pressure of each chamber (including the sealed bottle) is the ambient pressure, and there is no pressure difference and it is in a balanced state. At this time, the external force is released, and the combination of the valve core mechanism 4 and the liquid outlet mechanism 7 begins to slide downward under the action of the compression spring 6. The volume of the A cavity 5 begins to increase and is in a negative pressure state. At this time, the blocking valve 31 is in an open state, and the liquid in the bottle can flow into the A cavity 5 through the through hole 29 at the top of the end cover 26 under the action of the pressure difference, until the valve core mechanism 4 slides to the lowermost end of the inner tube of the valve body 2, completing the liquid suction process of the control valve.

[0043] The control valve discharge process of the forced liquid discharge control valve is actually the process of squeezing out the liquid. When the forced liquid discharge control valve completes the liquid suction process, the valve core mechanism 4 is at the lower end of the valve body 2. At this time, an upward force is applied to the valve core mechanism 4, and the valve core mechanism 4 slides upward, the volume of the A chamber 5 of the valve body 2 becomes smaller and the pressure becomes larger. The blocking valve 31 slides upward to close the passage between the bottle and the valve body 2, and the pressure of the B chamber 19 is the ambient pressure. After the liquid in the A chamber 5 is compressed, it flows into the B chamber 19 through the third cup-shaped thin-walled ring 18. As the valve core mechanism 4 continues to slide upward, the liquid in the B chamber 19 continues to increase. At this time, the liquid in the liquid outlet mechanism 7 is squeezed out at a certain speed until the pressure of each chamber is balanced to complete the liquid discharge process.

[0044] During the gas compensation process of the control valve of the forced liquid discharge control valve, since the liquid in the sealed bottle 1 is forced to be discharged, the pressure in the bottle will decrease. When the pressure in the bottle is lower than the external pressure to a certain extent, the liquid in the bottle cannot be sucked out, resulting in liquid discharge failure. Therefore, it is necessary to compensate the air in the sealed bottle 1 in time to keep the pressure in the bottle before discharge equivalent to the external pressure. After the discharge process of the liquid discharge mechanism 7 is completed, the valve core mechanism 4 continues to slide upward, and the disc 17 at the upper end of the valve core 16 begins to touch the lever 35. The lever 35 will act on the blocking valve 31. The blocking valve 31 slides downward to open the sealed bottle 1 and connects the A cavity 5 and the B cavity 19 in the valve body 2. At this time, since the pressure in the bottle is lower than the atmospheric pressure of the environment, the air in the environment will enter the sealed bottle 1 from the liquid discharge nozzle 37 through the B cavity 19, the A cavity 5, and the blocking valve 31 until the pressure in the bottle is the same as the environmental pressure, thereby completing the gas compensation in the sealed bottle 1.

[0045] After the above process, a cycle of emptying, liquid suction, liquid discharge and gas compensation is completed, waiting to enter the next working cycle.

[0046] The pressures of various cavities are different at different stages, and the sealing states of various cavities are different at different stages, thereby achieving normal discharge of liquid while avoiding dripping and leakage of residual liquid, thereby ensuring the working reliability of the control valve.

[0047] This type of forced discharge liquid control valve is simple and quick to manufacture and assemble, with low production cost. It can be directly used for the transportation of filled liquids and directly applied to predetermined equipment and devices. During use, the liquid in the sealed bottle is sealed, the liquid is non-volatile and pollution-free, and it is widely compatible with sealed bottles of different hardness materials. When the liquid in the bottle is used up, the pre-filled liquid bottle can be directly replaced without secondary filling. It is convenient and simple, and can be independently in different working states. Each process such as emptying, absorbing liquid, discharging liquid, and gas compensation is relatively independent. In the non-working state, the liquid chamber and the outlet are independently cut off, and there will be no leakage or dripping of liquid. The gas compensation in the sealed liquid bottle is actively forced to ensure smooth liquid discharge.

[0048] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A forced discharge liquid control valve for an inverted sealed bottle, characterized in that: The forced discharge liquid control valve includes a valve body with a double-layer cylinder structure for installation on an inverted sealed bottle, a blocking mechanism arranged at the top of the inner cylinder of the valve body for discharging liquid and taking in air, a valve core mechanism arranged at the bottom of the inner cylinder of the valve body and forming a cavity A in the inner cylinder of the valve body with the blocking mechanism, and a liquid discharge mechanism arranged in the inner cylinder of the valve body, connected to the valve core mechanism and performing rebound movement through a compression spring; the blocking mechanism includes an end cover arranged on the inner cylinder of the valve body with a downwardly extending cup wall, a first cup-shaped thin-walled ring is arranged on the downwardly extending cup wall of the end cover, which is interference-fitted with the inner diameter of the inner cylinder of the valve body for performing a one-way sealing function, a glue column hole used in conjunction with a glue column is arranged on the end cover, and a glue column hole for discharging liquid and taking in air is arranged on the end cover. The closure of the valve body is of a type of cup that is shaped like a glass and has a central portion for closing the valve body and a central portion for closing the valve body, the central portion for closing the valve body having a central portion for closing the valve body and a central portion for closing the valve body.

2. The forced discharge liquid control valve according to claim 1, characterized in that: The inner tube of the valve body is a stepped cylindrical structure, and the inner surface of the top end of the outer tube of the valve body is provided with a thread for installation on an inverted sealed bottle. A concave plane for placing a sealing gasket is provided at the connection between the inner tube of the valve body and the outer tube, and a circle of rubber bones for enhancing the sealing performance is provided on the concave plane. A rubber column for positioning and fixing the blocking mechanism is provided at the top end of the inner tube of the valve body, and a plurality of barbs for preventing the liquid outlet mechanism from slipping out are provided on the inner side of the bottom end of the outer tube of the valve body.

3. The forced discharge liquid control valve according to claim 2, characterized in that: The valve core mechanism includes a valve core with a through hole, a disc-shaped body arranged at the top of the valve core and sealed on the through hole and interference fit with the inner diameter of the inner tube of the valve body, a third cup-shaped thin-walled ring arranged at the upper end of the valve core, connected to the valve core and interference fit with the inner diameter of the inner tube of the valve body for one-way sealing, a fourth cup-shaped thin-walled ring arranged on the valve core, interference fit with the inner diameter of the inner tube of the valve body and forming a B cavity with the third cup-shaped thin-walled ring for one-way sealing, and a connecting nozzle arranged at the bottom end of the valve core with a convex mark for connecting to the liquid outlet mechanism, a disc-shaped body through hole is arranged on the disc-shaped body, and a side hole connected to the through hole is arranged on the B cavity formed by the third cup-shaped thin-walled ring and the fourth cup-shaped thin-walled ring.

4. The forced liquid discharge control valve according to claim 3, characterized in that: The bottom of the valve core is provided with a plurality of reinforcing ribs having the same diameter as the inner tube of the valve body.

5. The forced liquid discharge control valve according to claim 4, characterized in that: The liquid outlet mechanism includes a liquid outlet nozzle in a stepped cone shape, the top of the liquid outlet nozzle is provided with a blocking protrusion used in conjunction with the barb, the bottom of the liquid outlet nozzle is provided with a connecting position with a recess used in conjunction with the connecting nozzle, and the connecting position is provided with a liquid outlet hole connected to the through hole.

6. The forced liquid discharge control valve according to claim 5, characterized in that: The forced liquid discharge control valve also includes a protective cover for covering the forced liquid discharge control valve, and the valve body is made of polypropylene material.

7. The forced liquid discharge control valve according to claim 6, characterized in that: The inner cylinder of the valve body is a stepped cylinder, the top diameter of the inner cylinder of the valve body is larger than the outer diameter of the third cup-shaped thin-walled ring, the bottom diameter of the inner cylinder of the valve body is smaller than the outer diameter of the third cup-shaped thin-walled ring, and the inner cylinder of the valve body has different diameters and uses a bevel transition.

Images