CN113090801A - Valve capable of being automatically closed - Google Patents

Abstract

The invention discloses an automatically-closed valve applied to the field of chemical engineering or sewage discharge, which comprises a valve body, a valve core, a valve seat, an elastic piece and a pneumatic mechanism, wherein the valve core is arranged on the valve body; the valve core and the valve seat are arranged in the valve body, the valve core comprises a central body and a valve part surrounding the central body, and the valve seat comprises a first opening matched with the valve part; the elastic piece drives the valve core to keep a distance with the valve seat; the pneumatic mechanism comprises a cylinder barrel, a piston rod and a pipe body, the cylinder barrel is arranged in the valve body, the first end of the cylinder barrel is sealed, the piston is arranged in the cylinder barrel, two ends of the piston rod are respectively connected with the piston and the valve core, one end of the pipe body is communicated with the cylinder barrel, the communicated position is located between the piston and the first end of the cylinder barrel, and the other end of the pipe body extends out of the valve body; and when the air pressure between the piston and the first end of the cylinder barrel is increased, the valve core can move towards one side of the valve seat. After the application of this valve, the valve can automatic cutout when the liquid in the container reaches certain degree of depth, and consequently the staff can carry out other work when putting liquid, need not to watch on by one side.

Description

Valve capable of being automatically closed

Technical Field

The invention relates to the field of valves, in particular to a valve capable of being automatically closed.

Background

When water or other liquid materials are put into a pool or a container through a pipeline, people are usually required to wait for the liquid to reach a designated position, and then the valve is closed to stop the liquid discharge.

For example, in industrial production, materials are often required to be put into a container for storage, and the process requires a special person to wait aside, and a valve is closed once the materials are full, but when the container for storing the materials is large in volume, the time for putting the materials is long, so that the time for waiting aside by workers is very long.

For another example, when water is put into a swimming pool, it takes a long time for the water in the pool to reach a specified height because the volume of the swimming pool is very large, and during this process, workers are required to keep aside and keep track of the water amount in the pool at any time to prevent the water amount from exceeding the specified height.

Therefore, under the conditions, the normal work of the staff is delayed, and the staff cannot generate any labor value when waiting. If the valve can be automatically cut off according to the liquid amount in the container (or the pool), the worker can obtain 'liberation' and can go to other works without waiting at the side of the pool or the container.

In this regard, the inventor has applied for a valve (application No. 202110369425X) that can be installed at the outlet and automatically close when the amount of liquid in the container (or pool) reaches a certain level, so as to achieve the purpose of automatic flow cut-off. However, in subsequent analyses, the valve was found to suffer from the following disadvantages: to a large extent, the flow rate of the liquid flowing through the valve is determined by the distance between the valve core and the valve seat, so that the distance between the valve core and the valve seat is smaller and smaller during the process of moving the valve core towards the valve seat, which results in that the flow rate of the valve is smaller as the valve is closer to the closing of the valve, that is, the flow rate of the valve is smaller as the liquid in the container (or the pool) is deeper, and thus the liquid reaches a specified position, which takes a longer time.

Disclosure of Invention

The invention aims to provide an automatic closing valve, which can automatically close when a certain amount of liquid is filled into a container (or a pool) when the valve is arranged at the top of the container (or the pool).

To achieve the above object, according to an aspect of the present invention, there is provided an automatically closable valve including:

one end of the valve body is a liquid inlet end, and the other end of the valve body is a liquid outlet end;

the valve core is arranged in the inner cavity of the valve body and comprises a central body and at least two valve parts, wherein the central body is of a columnar structure, and the valve parts are mutually spaced, distributed around the central body and connected with the central body into a whole;

the valve seat is arranged in the inner cavity of the valve body and is provided with first openings penetrating along the thickness direction of the valve seat, the number of the first openings is consistent with that of the valve parts, and the distribution positions and the sizes of the first openings correspond to those of the valve parts, so that when the valve parts are embedded into the corresponding first openings, liquid can be prevented from flowing from one side of the first openings to the other side of the first openings;

the elastic element directly or indirectly applies acting force to the valve core to drive the valve core to keep a distance with the valve seat;

the pneumatic mechanism comprises a cylinder barrel, a piston rod and a pipe body; the cylinder barrel is arranged in the inner cavity of the valve body, and one end of the cylinder barrel in the axial direction is closed and is a first end; the piston is arranged in the cylinder barrel and can move along the axial direction of the cylinder barrel, and the piston is in sealing fit with the inner cavity of the cylinder barrel through a sealing ring; the piston rod is arranged along the axial direction of the cylinder barrel, one end of the piston rod is connected with the piston, and the other end of the piston rod is connected with the central body of the valve core; one end of the pipe body is communicated with the inner cavity of the cylinder barrel, the communication position is located between the piston and the first end of the cylinder barrel, and the other end of the pipe body is open and located outside the valve body;

and when the air pressure between the piston and the first end of the cylinder barrel is increased, the acting force of the air pressure on the piston drives the piston to drive the valve core to move towards one side close to the valve seat.

For the valve of the present invention, it can be installed by installing it on the top of the container (or tank), and then extending the pipe body (or the extension pipe connected below the pipe body) into the container (or tank) and extending it to a position near the bottom of the container (or tank); then, the liquid inlet end of the valve body is connected with a liquid supply pipeline, a liquid supply valve is arranged on the liquid supply pipeline, and liquid flowing out of the liquid outlet end can flow into a container (or a pool);

when the valve is used, the liquid supply valve of the liquid supply pipeline is opened, and at the moment, under the action of the elastic part, the valve core and the valve seat have a distance, so that the valve is opened, and liquid can directly pass through the valve and then flows into the container (or the pool); when the liquid in the container (or the pool) is more and more, the liquid entering the valve pipe body (or the extension pipe connected below the pipe body) is more and more, and then the space in the pipe body (or the pipeline connected below the pipe body) is compressed, so that the gas moves upwards, finally, the air pressure between the piston in the cylinder and the first end of the cylinder is gradually increased, when the air pressure is increased to a certain degree, the piston can be pushed to move, the piston can drive the valve core to move towards one side close to the valve seat, and when the liquid in the container (or the pool) is deep enough, the air pressure between the piston and the first end of the cylinder is large enough to enable each valve segment of the valve core to be completely inserted into each first opening of the valve seat, the water flow can be stopped, and the automatic closing of the valve is realized.

Therefore, after the valve disclosed by the invention is applied in the production process of chemical materials, when the liquid in the container reaches a certain depth, the valve can be automatically cut off, so that a worker can carry out other work during liquid discharge and does not need to keep aside to wait for closing the valve; similarly, when the swimming pool uses the valve of the invention, the staff does not need to keep aside to wait for closing the valve when the water is discharged into the swimming pool.

In addition, it should be noted that: when liquid flows through the valve, the liquid can pass through the gaps among the valve clacks of the valve core and the first openings of the valve seat, so that the flow rate of the valve is determined by three factors, namely the size of the gaps among the valve clacks, the size of the first openings and the size of the distance between the valve core and the valve seat, and the first two factors are fixed and unchanged, therefore, when the valve core tends to be closed (namely, the valve core moves towards one side of the valve seat), the flow rate of the valve in the early stage cannot be changed, only when the gap between the valve core and the valve seat is very small, the flow rate is reduced, and the time point of the complete closing of the valve is very close to the time point, so that the liquid discharge time cannot be prolonged too much even if the flow rate is reduced. That is, the structure of the valve core and the valve seat is improved, so that the flow rate of the liquid in the early stage is not changed in the process that the valve core moves towards the valve seat, and the flow rate of the liquid is reduced only when the valve core approaches the tail stage, while in the valve (application number is 202110369425X) designed by the inventor, the flow rate is reduced as soon as the valve core moves towards the valve seat.

In addition, it is also noted that: the deeper the liquid in the container (or the pool), the greater the air pressure between the piston and the first end of the cylinder barrel, so that a technician needs to calculate the pressure according to the required liquid depth in advance, and then designs the size of each component of the valve and selects a proper elastic part according to the calculated pressure, so that the more accurate control can be achieved, namely, when the liquid reaches the preset depth, the valve part of the valve core can completely prop into the first opening hole of the valve seat, so as to block the liquid from continuously flowing into the container (or the pool).

Preferably, the valve seat is positioned between the valve core and the cylinder barrel, the valve seat is further provided with a second opening penetrating along the thickness direction, and the distribution position and the size of the second opening correspond to those of the central body, so that when the central body is embedded into the second opening, liquid can be prevented from flowing from one side of the second opening to the other side;

the first end of the cylinder barrel is positioned on one side, close to the valve seat, of the cylinder barrel;

the piston rod is connected with the piston and the central body and transversely penetrates through the second opening and the first end of the cylinder barrel.

In the above preferred technical solution, the purpose of the second opening is to allow the piston rod to pass through the middle of the valve seat, so as to connect the valve core and the piston together, and when in operation, the valve core is pulled to move towards one side of the valve seat by the movement of the piston.

Further, the other end of the cylinder barrel in the axial direction is a second end, and the second end is also closed;

the elastic piece is a pressure spring and is arranged in the cylinder barrel, and two ends of the elastic piece are respectively abutted against the piston and the second end.

Furthermore, the valve also comprises a supporting piece which is arranged between the valve seat in the inner cavity of the valve body and the cylinder barrel;

the elastic part is a pressure spring which is sleeved on the piston rod and penetrates through the second opening of the valve seat, one end of the elastic part is abutted against the central body of the valve core, and the other end of the elastic part is abutted against the supporting part.

In the above further technical solution, the purpose of adding the supporting member is to provide another way of installing the elastic member, so that the elastic member can also be installed outside the cylinder barrel.

Or, preferably, the valve seat is arranged on one side of the valve core, which faces away from the cylinder barrel; the first end of the cylinder barrel is located on one side, far away from the valve core, of the cylinder barrel.

In the above preferred technical scheme, a layout mode of the valve core and the valve seat different from that in the previous preferred technical scheme is provided, and in the preferred technical scheme, the valve core is pushed to move towards the valve seat side by the movement of the piston.

Further, the other end of the cylinder barrel in the axial direction is a second end, and the second end is also closed; the piston rod is connected with the piston and the central body and transversely penetrates through the second end of the cylinder barrel; the elastic piece is a pressure spring which is sleeved on a piston rod in the cylinder barrel, and two ends of the elastic piece are respectively abutted against the piston and the second end.

Further, the inner wall of the valve body is provided with a sliding groove matched with one end, far away from the central body, of the valve portion, the extending direction of the sliding groove is consistent with the axis direction of the valve body, and one end, far away from the central body, of the valve portion is embedded into the sliding groove.

Among the above-mentioned further technical scheme, can restrict the moving direction of lamella portion after addding the spout, make the lamella portion can be more steady remove along the spout.

Further, the feed liquor end of valve body is provided with one section first screw thread, the one end that the cylinder was kept away from to the body is provided with one section second screw thread.

In the above further technical solution, the first thread may be an external thread or an internal thread on the valve body, for connecting the valve body and the liquid supply pipe; similarly, the second thread may be an external thread or an internal thread on the pipe body, and is used for connecting the pipe body with the extension pipe below.

According to another aspect of the present invention, there is provided a container comprising a container body and the aforementioned automatically closable valve;

wherein, the valve is arranged at the top of the container body, the pipe body of the valve extends to a position close to the bottom in the container body or a pipeline is connected below the pipe body of the valve and extends to a position close to the bottom in the container body.

According to a further aspect of the present invention there is provided a tank for holding a liquid, comprising a tank body and the aforementioned automatically closable valve;

the valve is arranged at the top of the tank body, the pipe body of the valve extends to a position close to the bottom in the tank body or a pipeline is connected below the pipe body of the valve and extends to a position close to the bottom in the tank body.

The container or the pool is characterized in that the valve is used, so that after the valve is connected with the liquid supply pipeline, when liquid is put into the container (or the pool), the valve can be automatically closed when the amount of the liquid reaches a certain degree; therefore, when discharging, the working personnel can go to carry out other works without staying aside to wait for closing the valve, and after the valve is automatically closed, the working personnel return to close the liquid supply valve of the liquid supply pipeline at any time.

Drawings

FIG. 1 is a schematic structural view of embodiment 1 of the present invention;

FIG. 2 is a cross-sectional view taken at A-A in FIG. 1;

FIG. 3 is a cross-sectional view taken at B-B of FIG. 1;

FIG. 4 is a perspective view of the valve cartridge of FIG. 1 in mating relationship with a valve seat;

FIG. 5 is a schematic view of the valve core of FIG. 1 moved into position against a valve seat;

FIG. 6 is a schematic structural view of embodiment 2 of the present invention;

FIG. 7 is a schematic structural view of embodiment 3 of the present invention;

FIG. 8 is a schematic structural view of embodiment 4 of the present invention;

FIG. 9 is a schematic structural view of embodiment 5 of the present invention;

fig. 10 is an enlarged view within the dashed line box in fig. 9.

Detailed Description

The present invention will be described in further detail with reference to specific examples, but the embodiments of the present invention are not limited thereto.

The inventor applies a valve (application number 202110369425X) capable of being installed at the liquid outlet on the 6 th 4 th 2021, and the valve can be automatically closed when the amount of liquid in the container (or the pool) reaches a certain degree, so as to achieve the purpose of automatically cutting off the flow. However, in subsequent analyses, the valve was found to suffer from the following disadvantages: the flow rate of the liquid flowing through the valve is determined by the distance between the valve core and the valve seat, so that in the process of moving the valve core towards the valve seat, the distance between the valve core and the valve seat is smaller and smaller, so that the flow rate is smaller and smaller, particularly, the flow rate is smaller and smaller when the valve is closer to the closing of the valve, namely, the flow rate of the valve is smaller and smaller when the water in the container (or the pool) is deeper, so that the liquid discharge time is prolonged.

In this regard, the inventors have developed an improved valve to mitigate the effects of the movement of the valve element on the fluid flow, and the improved valve is shown in several embodiments below.

Example 1:

the embodiment provides an automatically-closable valve which comprises a valve body 11, a valve seat 12, a valve core 13, an elastic piece 14 and a pneumatic mechanism 15.

Referring to fig. 1, the valve body 11 is a hollow cylinder structure, and one end of the valve body is a liquid inlet end 111, and the other end of the valve body is a liquid outlet end 112.

Referring to fig. 1, 2 and 4, the valve element 13 is disposed in the inner cavity of the valve body 11, the valve element 13 includes a central body 131 and four petal portions 132, wherein the central body 131 is a cylindrical structure, each petal portion 132 is a sector with an included angle of 45 ° and a uniform thickness, and each petal portion 132 is uniformly distributed around the central body 131 and is connected with the central body 131 into a whole through a connecting portion 133; the thickness of the connecting portion 133 is smaller than that of the flap portion 132, the thickness of the flap portion 132 is smaller than that of the central body 131, and one sides of the central body 131, the flap portion 132 and the connecting portion 133 departing from the valve seat 12 are in the same plane.

Referring to fig. 1, 3 and 4, the valve seat 12 is disposed in the inner cavity of the valve body 11 and between the valve core 13 and the pneumatic mechanism 15, and the valve seat 12 is provided with a first opening 121 and a second opening 122 penetrating in the thickness direction of the valve seat 12; the number of the first openings 121 is the same as that of the flap portions 132 of the valve core 13, and the number of the first openings 121 is four, and the distribution positions and the sizes of the first openings are also corresponding to those of the flap portions 132, so that when each flap portion 132 is embedded into the corresponding first opening 121, liquid can be prevented from flowing from one side of the first opening 121 to the other side; the distribution position and size of the second holes 122 correspond to the distribution position and size of the central body 131 of the valve core 13, so that when the central body 131 is inserted into the second holes 122, liquid can be blocked from flowing from one side of the second holes 122 to the other side; between the first and second openings 121, 122 of the valve seat 12 is a solid portion which can be inserted between the central body 131 and the flap portion 132 of the valve element 13 and against the connecting portion 133 when the valve element 13 is against the valve seat 12, see fig. 5.

Referring to fig. 1, the pneumatic mechanism 15 includes a cylinder 151, a piston 152, a piston rod 153, and a tube 154. The cylinder 151 is suspended in the inner cavity of the valve body 11, and both ends of the cylinder 151 in the axial direction are sealed, wherein one end close to the valve seat 12 is a first end 151a, and the other end far away from the valve seat 12 is a second end 151 b. The piston 152 is disposed in the cylinder 151 and can move along the axial direction of the cylinder 151, and the piston 152 is in sealing contact with the inner cavity of the cylinder 151 through a sealing ring 152 a. The piston rod 153 is disposed along the axial direction of the cylinder 151, and one end of the piston rod 153 is connected to the piston 152, and the other end of the piston rod 153 passes through the first end 151a of the cylinder 151 and the second opening 122 of the valve seat 12 and then is connected to the central body 131 of the valve element 13. One end of the tube 154 is communicated with the inner cavity of the cylinder 151, and the communication position is located between the piston 152 and the first end 151a of the cylinder 151, the other end of the tube 154 is an opening 154a and extends out of the valve body 11, and the tube 154 is connected with the valve body 11 in a sealing manner at a position where the tube passes through the valve body 11.

Referring to fig. 1, the elastic element 14 is a compression spring, and is disposed in the cylinder 151, and two ends of the elastic element respectively abut against the piston 152 and the second end 151b of the cylinder 151, and the elastic element 14 indirectly applies an acting force to the valve element 13 through the piston 152 to drive the valve element 13 to maintain a distance from the valve seat 12.

When the air pressure between the piston 152 and the first end 151a of the cylinder 151 increases, the piston 152 is urged by the force applied to the piston 152 by the air pressure to pull the valve element 13 by the piston rod 153, and the valve element 13 is moved to the side close to the valve seat 12. Meanwhile, the valve element 12 can move to a position where the valve element 12 abuts against the valve seat 12, that is, the valve element 12 is not hindered by other parts or structures, and is not affected by the compression degree of the elastic member 14, so that the valve element 12 cannot abut against the valve seat 12.

Preferably, referring to fig. 1 and 2, the inner wall of the valve body 11 is further provided with four sliding grooves 14 extending along the axial direction of the valve body 11, the sliding grooves 114 are matched with one end of the flap portion 132 away from the central body 131, and one end of the flap portion 132 away from the central body 131 is embedded in the sliding grooves 114. The slide groove 114 can limit the moving direction of the flap part 132, so that the flap part 132 can move along the slide groove 114 more smoothly.

Preferably, the inner wall of the liquid inlet end 111 of the valve body 11 is further provided with a section of first thread 113, and the inner wall of the end of the pipe body 154 away from the cylinder 151 is further provided with a section of second thread 154 b. The first thread 113 is used to connect the valve body 11 to the supply duct and the second thread 154b is used to connect the tubular body 154 to the extension duct below.

Preferably, the piston rod 153 is movably and sealingly connected at a position extending through the first end 151a of the cylinder 151 by a sealing ring 151c disposed at the first end 151 a.

Referring to fig. 9, the valve of this embodiment may be installed by mounting it on the top of the container 2, and then connecting an extension pipe 3 under the pipe body 154, and extending the extension pipe 3 into the container body 2 to a position near the bottom of the container body 2, the bottom of the extension pipe 3 having an opening. Then, the liquid inlet end 111 of the valve body 11 is connected with the liquid supply pipeline 6, the front end of the liquid supply pipeline 6 is provided with a liquid supply valve 7, and liquid flowing out from the liquid outlet end 112 of the valve body 11 can flow into the container body 2.

In use, the liquid supply valve 7 of the liquid supply pipeline 6 is opened, and the valve 1 of the embodiment is opened because the valve core 13 is kept at a certain distance from the valve seat 12 under the action of the elastic element 14, so that liquid can directly flow through the valve 1 and then flow into the container body 2. A part of the liquid flowing into the container body 2 enters the extension pipe 3 from the bottom of the extension pipe 3, when the liquid in the container body 2 is deeper and deeper, the pressure at the bottom opening of the extension pipe 3 is higher and higher, so that the liquid in the extension pipe 3 is higher and higher, the liquid level in the extension pipe 3 is gradually raised, the space above the liquid level in the extension pipe 3 is gradually compressed (see fig. 10), and because the space is closed, the air pressure in the space is higher and higher, that is, the air pressure between the piston 152 and the first end 151a of the cylinder 151 is higher and higher, when the air pressure is increased to a certain degree, the piston 152 is pushed to move, the piston 152 moves to pull the valve element 13 to the side close to the valve seat 12 through the piston rod 153, until the liquid in the container body 2 is deep enough, the air pressure between the piston 152 and the first end 151a of the cylinder is high enough to enable each flap 132 and the center body 131 of the valve element 13 to be completely inserted into the valve seat 131 The water flow is stopped when the first opening 121 and the second opening 122 of the valve 12 (see fig. 5) are opened, thereby achieving the automatic closing of the valve 1.

It can be seen that, after the valve 1 of the invention is used in the production process of chemical materials, the valve 1 can be automatically cut off after the liquid in the container body 2 reaches a certain depth, so that a worker can carry out other work during liquid discharge without staying aside to wait for closing the valve 1, and after the valve 1 is automatically closed, the worker can return to close the liquid supply valve 7 at the front end of the liquid supply pipeline 6 at any time. Similarly, when the valve 1 of the invention is used in a swimming pool, workers do not need to keep aside to wait for closing the valve when water is discharged into the swimming pool.

To be noted: since the liquid passes through the gap between the flap portions 132 of the valve element 13, then flows to the region between the valve element 13 and the valve seat 12, then passes through the first opening 121 or the second opening 122 of the valve seat 12, and finally flows out of the valve 1 when passing through the valve 1 of the present invention, the flow rate of the valve 1 is determined by three factors, i.e., the size of the gap between the flap portions 132, the sizes of the first opening 121 and the second opening 122, and the size of the gap between the flap portions 12 and the valve seat 12, assuming that the sum of the cross-sectional areas of the gaps between the flap portions 132 is a, the sum of the cross-sectional areas of the first opening 121 and the second opening 122 is b, and the gap between the valve element 13 and the valve seat 12 is c, during the movement of the valve element 13 to the side of the valve seat 12, only the gap c affects the flow rate of the valve 1 because the sizes of a and b are not changed, but when the gap c is changed, the flow rate does not necessarily change, but the distance c affects the flow rate only when the distance c is small enough to prevent the liquid flowing from the area a from being rapidly discharged from the area b, but the distance c is relatively close to zero (i.e., the flap portion 132 and the center body 131 of the valve element 13 are inserted into the first opening 121 and the second opening 122 of the valve seat 12 soon), so that the flow rate of the valve 1 in the early stage does not change when the valve element 13 moves to the side of the valve seat 12, and the flow rate is reduced only when the valve element 13 is very close to the valve seat 12 in the end stage, and the valve 1 is closed, so that the liquid in the container body 2 reaches a predetermined position soon even if the flow rate is reduced, and thus the discharging duration is not greatly affected. In the valve designed by the inventor (application number is 202110369425X), once the valve core moves towards the valve seat, the flow rate is smaller and smaller, compared with the prior art, the embodiment greatly improves the defects of the prior art, and can greatly shorten the liquid discharging time.

In addition, it is also noted that: since the deeper the liquid in the container body 2, the greater the air pressure between the piston 152 and the first end 151a of the cylinder, the more precise control can be achieved by the technician by calculating the pressure according to the required liquid depth in advance, and then designing the size of each component of the valve and selecting the proper elastic member 14 accordingly, i.e. when the liquid reaches the predetermined depth, the flap portion 132 and the central body 131 of the valve element 13 are completely inserted into the first opening 121 and the second opening 122 of the valve seat 12, so as to block the liquid from flowing into the container body 2.

Example 2:

referring to fig. 6, the present embodiment is different from embodiment 1 in that: the valve 1 further comprises a support 16, the support 16 is arranged between the valve seat 12 and the cylinder 151 in the inner cavity of the valve body 11, the support 16 is provided with a hollow hole 161 for liquid to pass through, and the middle part is also provided with a through hole 162 for the piston rod 153 to pass through; the elastic element 14 is also a compression spring, but the compression spring is not arranged in the cylinder 151, but is sleeved on the piston rod 153 and passes through the second opening 122 of the valve seat 12, and one end of the compression spring abuts against the central body 131 of the valve core 13, and the other end of the compression spring abuts against the support element 16.

Example 3:

referring to fig. 7, the present embodiment is different from embodiment 1 in that: the valve seat 12 is arranged on the side of the valve core 13 facing away from the cylinder 151; the first end 151a of the cylinder 151 is located on the side of the cylinder 151 away from the valve element 13, and the second end 151b is located on the side of the cylinder 151 close to the valve element 13; the piston rod 153 is connected to the piston 152 and the center body 131 and also extends transversely through the second end 151b of the cylinder 151; the sealing ring 151c is arranged at the second end 151b of the cylinder barrel 151, so that the piston rod 153 is movably and hermetically connected with the second end 151 b; the elastic element 14 is a compression spring, which is sleeved on a piston rod 153 in the cylinder 151, and two ends of the elastic element respectively abut against the piston 152 and the second end 151 b; since the piston rod 153 does not need to pass through the middle of the valve seat 12, the center of the valve seat 12 is not provided with the second opening, and a solid structure is adopted; the valve element 13 is not provided with a connecting portion, and the flap portion 132 of the valve element 13 is directly connected to the central body 131.

Compared with embodiment 1, the present embodiment is different mainly in that the layout of the valve element 13 and the valve seat 12 is changed, in the present embodiment, the valve element 13 is pushed to move toward the valve seat 12 by the movement of the piston 152, and in embodiment 1, the valve element 13 is pulled to move toward the valve seat 12 by the movement of the piston 152.

Example 4;

referring to fig. 8, the present embodiment is different from embodiment 1 in that the structure of the valve element 13 and the valve seat 12 is improved, specifically: all side walls of the part of each flap part 132 inserted into the first opening 121 are designed to be inclined surfaces, meanwhile, the hole wall of the first opening 121 is also designed to be inclined surfaces and matched with the inclined surfaces of the flap parts 132, and meanwhile, the inclined surfaces of the flap parts 132 can be tightly attached to each other when the flap parts 132 are inserted into the first opening 121; meanwhile, the side wall of the portion of the central body 131 inserted into the second opening 122 is also designed to be an inclined surface, and the hole wall of the second opening 122 is also designed to be an inclined surface, so that when the central body 131 is inserted into the second opening 122, the inclined surfaces of the two can be tightly attached.

Through the improvement, because the structure of inclined plane has been adopted, consequently the leakproofness has obtained the improvement, promptly, lamella portion 132 can avoid appearing the gap with the better laminating of first trompil 121 when inserting first trompil 121 completely, leads to the condition of weeping to take place, and in the same way, also can with the better laminating of second trompil 122 when central body 131 inserts second trompil 122 completely.

Example 5:

referring to fig. 9 and 10, the present embodiment provides a container including a container body 2 and the valve 1 provided in any one of embodiments 1 to 4.

Wherein, the valve 1 is erected on the top of the container body 2, an extension pipe 3 is connected below the pipe body 154 of the valve 1, and the extension pipe 3 extends to a position near the bottom in the container body 2.

More specifically, the pipe body 154 of the valve 1 is connected with the extension pipe 3 through the first adaptor 4, and both ends of the first adaptor 4 are provided with threads which can be respectively connected with the pipe body 154 and the extension pipe 3; the liquid inlet end 111 of the valve body 11 of the valve 1 is connected with the liquid supply pipeline 6 through a second adapter 5, and both ends of the second adapter 5 are provided with threads which can be respectively connected with the valve body 11 and the liquid supply pipeline 6; the front end of the liquid supply pipeline 6 is provided with a liquid supply valve 7.

Of course, the present embodiment may also abandon the extension pipe 3 and extend the pipe body 154 to make the opening 154a extend directly to the position near the bottom in the container body 2.

Example 6:

this example is similar to example 5, except that: this example replaces the container body of example 5 for a pool (e.g. a swimming pool or a watering reservoir) and the remaining technical features are in accordance with example 5.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. An automatically closable valve, comprising:

one end of the valve body (11) is a liquid inlet end (111), and the other end is a liquid outlet end (112);

the valve core (13) is arranged in the inner cavity of the valve body (11) and comprises a central body (131) and valve parts (132), the central body (131) is of a columnar structure, the number of the valve parts (132) is at least two, and the valve parts (132) are mutually spaced, distributed around the central body (131) and connected with the central body (131) into a whole;

the valve seat (12) is arranged in the inner cavity of the valve body (11), the valve seat (12) is provided with first openings (121) penetrating in the thickness direction of the valve seat (12), the number of the first openings (121) is consistent with that of the petals (132), and the distribution positions and sizes are also consistent with those of the petals (132), so that when each petal (132) is embedded into the corresponding first opening (121), liquid can be blocked from flowing from one side of the first opening (121) to the other side;

the elastic piece (14) directly or indirectly gives acting force to the valve core (13) to drive the valve core (13) to keep a distance with the valve seat (12);

the pneumatic mechanism (15), the pneumatic mechanism (15) includes a cylinder (151), a piston (152), a piston rod (153) and a pipe body (154); the cylinder barrel (151) is arranged in an inner cavity of the valve body (11), and one end of the cylinder barrel (151) in the axial direction is closed and is a first end (151 a); the piston (152) is arranged in the cylinder barrel (151) and can move along the axial direction of the cylinder barrel (151), and the piston (152) is in sealing fit with the inner cavity of the cylinder barrel (151) through a sealing ring (152 a); the piston rod (153) is arranged along the axial direction of the cylinder barrel (151), one end of the piston rod (153) is connected with the piston (152), and the other end of the piston rod is connected with the central body (131) of the valve core (13); one end of the pipe body (154) is communicated with the inner cavity of the cylinder barrel (151), the communication position is located between the piston (152) and the first end (151a) of the cylinder barrel (151), and the other end of the pipe body (154) is open (154a) and located outside the valve body (11);

when the air pressure between the piston (152) and the first end (151a) of the cylinder (151) is increased, the acting force of the air pressure on the piston (152) drives the piston (152) to drive the valve core (13) to move towards the side close to the valve seat (12).

2. An automatically closable valve according to claim 1, wherein the valve seat (12) is located between the valve core (13) and the cylinder (151), the valve seat (12) is further provided with a second opening (122) penetrating in the thickness direction, the distribution position and size of the second opening (122) correspond to the distribution position and size of the central body (131), so as to ensure that the central body (131) blocks the liquid from flowing from one side of the second opening (122) to the other side when inserted into the second opening (122);

the first end (151a) of the cylinder barrel (151) is positioned on one side of the cylinder barrel (151) close to the valve seat (12);

the piston rod (153) is connected to the piston (152) and the center body (131) and also extends transversely through the second opening (122) and the first end (151a) of the cylinder (151).

3. An automatically closable valve according to claim 2, wherein the other end of the cylinder (151) in the axial direction is a second end (151b), the second end (151b) being also closed;

the elastic piece (14) is a pressure spring, is arranged in the cylinder barrel (151), and two ends of the elastic piece are respectively abutted against the piston (152) and the second end (151 b).

4. An automatically closable valve according to claim 2, characterized in that the valve further comprises a support (16), the support (16) being arranged between the valve seat (12) and the cylinder (151) in the interior of the valve body (11);

the elastic part (14) is a pressure spring, is sleeved on the piston rod (153) and penetrates through the second opening (122) of the valve seat (12), and meanwhile, one end of the elastic part is abutted against the central body (131) of the valve core (13) while the other end of the elastic part is abutted against the supporting part (16).

5. An automatically closable valve according to claim 1, characterized in that the valve seat (12) is arranged on the side of the valve element (13) facing away from the cylinder (151); the first end (151a) of the cylinder (151) is located on the side of the cylinder (151) away from the valve core (13).

6. An automatically closable valve according to claim 5, wherein the other end of said cylinder (151) in the axial direction is a second end (151b), said second end (151b) being also closed; the piston rod (153) is connected with the piston (152) and the central body (131) and transversely penetrates through the second end (151b) of the cylinder barrel (151); the elastic piece (14) is a pressure spring, is sleeved on a piston rod (153) in the cylinder barrel (151), and two ends of the elastic piece are respectively abutted against the piston (152) and the second end (151 b).

7. An automatically closable valve according to claim 1, wherein the inner wall of the valve body (11) is provided with a sliding groove (114) matching with one end of the flap portion (132) far from the central body (131), the extending direction of the sliding groove (114) is consistent with the axial direction of the valve body (11), and one end of the flap portion (132) far from the central body (131) is embedded in the sliding groove (114).

8. An automatically closable valve as claimed in claim 1, wherein the inlet end (111) of the valve body (11) is provided with a first thread (113), and the end of the tube (154) remote from the cylinder (151) is provided with a second thread (154 b).

9. A container, characterized by comprising a container body (2) and an automatically closable valve (1) according to any of claims 1 to 8;

wherein, the valve (1) is arranged at the top of the container body (2), the pipe body (154) of the valve (1) extends to a position close to the bottom in the container body (2) or a pipeline (3) is connected below the pipe body (154) of the valve (1), and the pipeline (3) extends to a position close to the bottom in the container body (2).

10. A tank for accumulating a liquid, comprising a tank body and an automatically closable valve as claimed in any one of claims 1 to 8;

the valve is arranged at the top of the tank body, the pipe body of the valve extends to a position close to the bottom in the tank body or a pipeline is connected below the pipe body of the valve and extends to a position close to the bottom in the tank body.

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