CN110541961A

CN110541961A - Built-in liquid level controller and liquid level control system thereof

Info

Publication number: CN110541961A
Application number: CN201910862561.5A
Authority: CN
Inventors: 孙世林; 韩安伟; 李维槽
Original assignee: Anhui Redstar Valve Co Ltd
Current assignee: Anhui Redstar Valve Co Ltd
Priority date: 2019-09-12
Filing date: 2019-09-12
Publication date: 2019-12-06

Abstract

The invention relates to the technical field of liquid level control, in particular to a built-in liquid level controller and a liquid level control system thereof. A built-in liquid level controller comprises a valve body assembly, a control box, a floating piece and a siphon pipe assembly; the valve body assembly is arranged at one end of the control box, and the floating piece is accommodated in the control box; the siphon component comprises a first pipe body and a second pipe body, openings are formed in two ends of the first pipe body respectively, one end of the first pipe body penetrates through the mounting hole and extends into the control box, the second pipe body is installed in the control box in a sealing mode and is sleeved on the first pipe body extending into the control box, a siphon cavity is formed between the second pipe body and the first pipe body in an enclosing mode, and at least one siphon hole for communicating the control box with the siphon cavity is formed in one end, close to the mounting hole, of the second pipe body.

Description

Built-in liquid level controller and liquid level control system thereof

Technical Field

the invention relates to the technical field of liquid level control, in particular to a built-in liquid level controller and a liquid level control system thereof.

Background

And the liquid level controller is arranged in the liquid storage device and used for controlling the height of the liquid level in the liquid storage device. The liquid level controller can be divided into electronic liquid level switch control, floating ball switch control, siphon control and the like according to different control modes. The liquid level controller mainly controls the opening and closing of the valve so as to realize the height control of the liquid level by supplementing liquid to the liquid storage device.

The siphon type liquid level controller mainly realizes the control of the valve through the siphon principle, the siphon type controller mainly comprises a control box, a siphon pipe, a floating piece and the like, the floating piece is arranged in the control box, one end of the siphon pipe is communicated with the inside of the control box, and the other end of the siphon pipe extends into a preset position in the liquid storage device.

At present, the existing liquid level controller is not compact in structure and occupies a large space.

Disclosure of Invention

Therefore, it is necessary to provide a built-in liquid level controller with compact structure and small occupied space and a liquid level control system thereof for solving the above technical problems

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

A built-in liquid level controller is arranged in a liquid storage device and used for controlling the liquid level of fluid in the liquid storage device; the built-in liquid level controller comprises a valve body assembly, a control box, a floating piece, a sealing assembly and a siphon pipe assembly; the valve body assembly is arranged at one end of the control box, the floating piece is accommodated in the control box, the sealing assembly is arranged in the valve body assembly, one end of the sealing assembly extends into the control box and is connected with the floating piece, and the other end of the sealing assembly is used for opening and closing the built-in liquid level controller; one end of the control box, which is close to the valve body assembly, is provided with a control hole for fluid to flow in, and one end of the control box, which is far away from the valve body assembly, is provided with a mounting hole;

The siphon component comprises a first pipe body and a second pipe body, two ends of the first pipe body are respectively provided with an opening, one end of the first pipe body penetrates through the mounting hole and extends into the control box, the other end of the first pipe body extends to a preset position of the liquid storage device, and the first pipe body is connected with the mounting hole in a sealing mode;

The second pipe body is installed in the control box in a sealing mode and sleeved on the first pipe body extending into the control box, a siphon cavity is formed between the second pipe body and the first pipe body in an enclosing mode, and at least one siphon hole for communicating the control box with the siphon cavity is formed in one end, close to the installation hole, of the second pipe body.

in one embodiment, the siphon tube assembly further comprises a connector, the connector is hermetically mounted in the mounting hole, a connecting hole is formed in the connector along the axis direction of the connector, the first tube body penetrates into the control box from the connecting hole, and the second tube body is mounted on the connector.

In one embodiment, the connector has a first end and a second end opposite to each other, the first end is located in the control box, the second end is located outside the control box, an opening is formed in one end of the second tube, and the open end of the second tube is installed at the first end.

In one embodiment, the siphon tube assembly further includes a connecting cap and a sealing member, the connecting cap and the sealing member are both sleeved on the first tube located outside the control box, and the connecting cap is connected with the second end and presses the sealing member against the second end, so that the sealing member seals a gap between the first tube and the connector.

In one embodiment, an end of the first tube extending into the control box is a third end, an end of the second tube away from the mounting hole is a fourth end, and the first tube is capable of moving along the axis direction of the second tube along the axis direction to adjust a distance between the third end and the fourth end.

In one embodiment, the siphon hole is a round hole or a square hole.

In one embodiment, an accommodating groove with an opening is formed in one end, facing the mounting hole, of the floating member, and one end, far away from the mounting hole, of the second pipe body extends into the accommodating groove from the opening.

And one end of the sealing component, which is far away from the floating piece, is used for opening/closing the channel so as to open or close the built-in liquid level controller.

In one embodiment, the built-in liquid level controller further comprises a valve body assembly and a sealing assembly, the valve body assembly is provided with a first outlet and a channel, and one end of the sealing assembly, which is far away from the floating part, is used for opening/closing the channel so as to open or close the built-in liquid level controller.

In one embodiment, the valve body assembly includes a valve seat connected to the control box and a valve body mounted to the valve seat, the first outlet is located on the valve seat, and the passageway is located on the valve body.

in one embodiment, the valve body assembly comprises a valve seat, a valve body, a valve clack and a valve core, wherein the valve seat is arranged on the control box, the valve body is arranged on the valve seat, the valve clack is positioned between the valve body and the valve seat and forms a valve cavity with the valve seat, one end of the valve core is arranged on the valve seat, and the other end of the valve core penetrates through the valve clack and is arranged with a gap between the valve core and the valve clack;

The valve body is provided with a first inlet and a second outlet, the first inlet is communicated with the valve cavity through the gap, the first outlet is positioned on the valve seat, the channel is positioned on the valve core, and the sealing component opens/closes the channel to control the valve clack to move so as to connect/disconnect the first inlet and the second outlet, so as to open or close the built-in liquid level controller.

the invention also provides the following technical scheme:

A liquid level control system is used for controlling the liquid level in a liquid storage device and comprises a valve assembly and a built-in liquid level controller, wherein the built-in liquid level controller is used for controlling the opening and closing of the valve assembly, and the built-in liquid level controller adopts the built-in liquid level controller.

Compared with the prior art, the built-in liquid level controller has the advantages that the second pipe body is contained in the control box, the second pipe body is sleeved on the first pipe body extending into the control box, so that the siphon pipe assembly in a sleeve pipe mode is formed, the temporary volume of the whole built-in liquid level controller is effectively reduced, and the structure is more compact.

Drawings

FIG. 1 is a structural view of an embodiment of a fluid level control system provided by the present invention;

FIG. 2 is an enlarged view of the invention at A in FIG. 1;

FIG. 3 is a schematic view of the built-in level controller and valve assembly of the present invention through a pipeline;

FIG. 4 is a structural view of another embodiment of a fluid level control system provided by the present invention;

FIG. 5 is an enlarged view at B of FIG. 4 in accordance with the present invention;

FIG. 6 is a schematic structural view of a siphon tube assembly provided by the present invention.

In the figure, the built-in liquid level controller 100, the valve body assembly 10, the first outlet 11, the passage 12, the connecting sleeve 13, the liquid passing hole 131, the valve seat 14, the mounting chamber 141, the communicating hole 142, the valve body 15, the first inlet 151, the second outlet 152, the valve chamber 153, the valve flap 16, the through hole 161, the valve core 17, the seal assembly 20, the first seal 21, the magnetic member 22, the second seal 23, the float member 30, the magnet 31, the control box 40, the control hole 41, the mounting hole 42, the siphon tube assembly 50, the first tube 51, the second tube 52, the siphon hole 521, the siphon chamber 53, the connector 54, the connecting hole 541, the first end 542, the second end 543, the connecting cap 55, the seal 56, the waterproof cover 60, the accommodating chamber 61, the liquid level control system 200, the liquid storage device 201, the valve assembly 202, the main valve assembly 202a, the main valve 202b, the main valve seat 202c, the main elastic member 202d, the main valve, Main outlet 202g, conduit 203.

Detailed Description

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

It will be understood that when an element is referred to as being "mounted on" another element, it can be directly on the other element or intervening elements may also be present. When a component is referred to as being "disposed on" another component, it can be directly on the other component or intervening components may also be present. When an element is referred to as being "secured to" another element, it can be directly secured to the other element or intervening elements may also be present.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "or/and" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1 and fig. 3, the present invention provides a fluid level control system 200, which is used to control the fluid level in a fluid storage device 201, so as to achieve the function of automatically supplying fluid to the fluid storage device 201. In this embodiment, the reservoir 201 may be a pool, tank, or the like, and the fluid may be water.

The liquid level control system 200 includes a valve assembly 202 and an internal liquid level controller 100, the valve assembly 202 is connected to a pipeline assembly, and the internal liquid level controller 100 is disposed in the liquid storage device 201 and connected to the valve assembly 202 for controlling the opening and closing of the valve assembly 10.

In the present embodiment, the valve assembly 202 is a common valve assembly, for example, the valve assembly 202 can be an axial flow water control valve, a diaphragm water control valve, etc. Of course, the built-in level controller 100 can also be used alone, that is, the built-in level controller 100 is directly connected to a pipeline assembly, and the liquid level of the liquid storage device 201 is controlled by the on/off of the built-in level controller 100. Here, it should be explained that the fluid level of the fluid in the fluid storage device 201 refers to the height of the fluid at the position in the fluid storage device 201.

Further, the valve assembly 202 is an axial flow water control valve, and the built-in level controller 100 is connected with the valve assembly 202 through a pipe 203. Of course, in other embodiments, the built-in level controller 100 can also be directly mounted on the valve assembly 202, i.e. the built-in level controller 100 and the valve assembly 202 are integrated to save space.

With continued reference to fig. 1, the valve assembly 202 includes a main valve body 202a, a main valve flap 202b, a main valve seat 202c, and a main resilient member 202 d. The main valve flap 202b is installed in the main valve body 202a, and encloses a main valve cavity 202e with the main valve body 202a, the main valve seat 202c is installed on the main valve body 202a, the main elastic element 202d is located in the main valve cavity 202e, one end of the main elastic element 202d abuts against the main valve flap 202b, and the other end abuts against the inner wall of the main valve cavity 202 e.

The main valve body 202a is opened with a main inlet 202f for fluid to flow in and a main outlet 202g for fluid to flow out and connected to the reservoir 101, a main valve seat 202c is installed at the main outlet 202g, and a main valve flap 202b is engaged with the main valve seat 202 c. The built-in liquid level controller 20 controls the communication and the separation between the main inlet 202f and the main outlet 202g to control the liquid level of the fluid in the liquid storage device 101.

As shown in fig. 1 and 2, the built-in liquid level controller 100 includes a valve body assembly 10, a seal assembly 20, a float member 30, a control box 40, and a siphon tube assembly 50. The valve body assembly 10 is mounted at one end of the control box 40, the valve body assembly 10 is provided with a first outlet 11 and a channel 12, the sealing assembly 20 is mounted on the valve body assembly 10, the floating member 30 is accommodated in the control box 40, the siphon tube assembly 50 is mounted at one end of the control box 40 far away from the valve body assembly 10, one end of the sealing assembly 20 extends into the control box 40 and is matched with or connected with the floating member 30, and the other end of the sealing assembly 20 is used for opening/closing the channel 12, so that the sealing assembly 20 is driven by the floating member 30 to move so as to open/close the channel 12, and the built-in liquid level controller 100 is controlled to be opened or closed.

in an embodiment, the valve body assembly 10 includes a connecting sleeve 13, a valve seat 14 and a valve body 15, the valve seat 14 is installed on the control box 40, the valve body 15 is installed on the valve seat 14, one end of the connecting sleeve 13 is installed on the valve body 15, and the other end is installed on the main valve body 202a, that is, the connecting sleeve 13, the valve seat 14, and the valve body 15 are connected with the main valve body 202a to form an integrated structure.

Of course, as shown in fig. 3, in other embodiments, the connection between the main valve body 202a and the valve body 15 may also be connected through a pipe 203, in which case the connecting sleeve 13 is installed on the main valve body 202a, and the connecting sleeve 13 is connected with the pipe 203, so as to realize the connection between the main valve body 202a and the valve body 15.

It should be understood that the connection method selected for the connection sleeve 13 or the built-in level controller 100 and the valve assembly 202 may be determined according to specific installation requirements, and is not limited herein.

It can be understood that the connecting sleeve 13, the valve seat 14 and the main valve body 202a are connected into an integrated structure, so that the structural size of the whole liquid level control system 200 is reduced, and the installation space is saved; meanwhile, the structure of the integrated type reduces the assembly of parts, and the processing and the transportation are more convenient.

Preferably, the connecting sleeve 13 is substantially cylindrical, and the connecting sleeve 13 is connected with the main valve body 202a in a sealing manner. The connecting sleeve 13 is provided with a liquid passing hole 131, and the channel 12 is communicated with the main inlet 202f through the liquid passing hole 131.

The valve seat 14 is connected to the main valve body 202a in a sealing manner by a sealing ring, so as to prevent the fluid or pressure in the main valve body 202a from leaking out.

Furthermore, a mounting cavity 141 is formed in the valve seat 14, the mounting cavity 141 is located between the first outlet 11 and the channel 12, the sealing assembly 20 is mounted in the mounting cavity 141, and one end of the sealing assembly 20 penetrates out of the bottom of the mounting cavity 141 and is connected with the floating member 30, so that the sealing assembly 20 seals the channel 12 under the driving of the floating member 30, and the pressure of the main valve cavity 202e is increased; alternatively, the sealing assembly 20 is driven by the floating member 30 to release the sealing of the channel 12, so as to communicate the channel 12 with the first outlet 11, and further to allow a part of the fluid of the main inlet 202f to flow out to the reservoir 201 through the liquid passing hole 131, the channel 12 and the first outlet 11, i.e. to relieve the pressure of the main valve chamber 202 e.

Further, the bottom of the mounting cavity 141 is provided with a communication hole 142, one end of the sealing assembly 20 extends from the communication hole 142 and is connected with the communication hole 142 in a sealing manner, and extends into the control box 40 and is matched or connected with the floating member 30, and the other end of the sealing assembly is used for opening/closing the channel 12 under the driving of the floating member 30.

The passage 12 is opened on the valve body 15, the first outlet 11 is opened on the valve seat 14, and the valve body 15, the valve seat 14 and the main valve body 202a are locked by locking pieces, so that the valve body 15, the valve seat 14 and the main valve body 202a are connected into an integrated structure.

It will be appreciated that in this embodiment, the primary inlet 202f is directed to flow out of the reservoir 201 through the liquid through hole 131, the channel 12 and the first outlet 11. That is, the opening or closing of the built-in level controller 100 is achieved by controlling the opening or closing of the passage 12, thereby directly achieving the opening or closing of the valve assembly 202.

in another embodiment, as shown in fig. 4 and 5, the valve body assembly 10 includes a valve flap 16 and a valve core 17 in addition to the connecting sleeve 13 and the valve seat 14 described in the above embodiments. The valve body 15 is sealingly mounted on the valve seat 14, and the connecting sleeve 13 has one end sealingly mounted on the valve body 15 and the other end sealingly connected to the main valve body 202 a.

Of course, in other embodiments, the connection sleeve 13 and the main valve body 202a may be connected through the pipe 203; or directly omitting the connecting sleeve 13, and enabling the built-in liquid level controller 100 to be directly connected with the main valve body 202a through the pipeline 203. It should be explained that, in this embodiment, which connection mode is selected between the connection sleeve 13 or the built-in liquid level controller 100 and the main valve body 202a may be determined according to specific installation requirements, and this is not limited herein.

Preferably, the valve body 15 is mounted to the valve seat 14 by means of a screw connection, a welded connection, or the like. In this embodiment, the valve body 15 is screwed to the valve seat 14.

The valve body 15 is provided with a first inlet 151 for fluid to enter and a second outlet 152 for fluid to flow out, the valve flap 16 is disposed in the valve body 15, a valve cavity 153 is defined by the valve flap 16, the valve body 15 and the valve seat 14, the first inlet 151 is used for communicating with an external pipeline threshold or a liquid through hole 131 to guide fluid to enter the valve body 15, and the second outlet 152 is communicated with the liquid storage device 201 to enable fluid flowing out from the second outlet 152 to flow into the liquid storage device 201.

The valve flap 16 is substantially "bowl" shaped, the valve flap 16 is disposed between the valve body 15 and the valve seat 14, and the opening of the valve flap 16 is disposed toward the valve seat 14. Further, the valve flap 16 has an outer side facing the first inlet 151 and an inner side facing the valve chamber 153, the inner side 222 of the valve flap having a larger surface area than the outer side 221 of the valve flap 16.

The valve flap 16 is provided with a through hole 161, and the through hole 161 connects the valve cavity 153 with the first inlet 151. One end of the valve core 17 extends into the through hole 161, a gap is formed between the outer wall of the valve core 17 and the inner wall of the through hole 161, and part of fluid in the first inlet 151 enters the valve member 153 through the gap.

In the present embodiment, the passage 12 opens into the spool 17. The passage 12 is communicated with the valve cavity 153 for the fluid of the valve cavity 153 to flow out.

Furthermore, the valve core 17 is sleeved with an elastic member, one end of the elastic member abuts against the valve core 17, the other end of the elastic member abuts against the valve clack 16, and the elastic member is used for resetting the valve clack 16.

It will be appreciated that in this embodiment, the seal assembly 20 controls the opening or closing of the passage 12 and thus the movement of the flap 16 such that the flap 16 controls the communication or non-communication between the first inlet 151 and the second outlet 152 to effect the opening or closing of the built-in level controller to effect the opening or closing of the valve assembly 202.

As shown in fig. 1 or 4, the sealing assembly 20 is engaged with the floating member 30, i.e. the sealing assembly 20 does not move with the movement of the floating member 30; alternatively, the seal assembly 30 is connected to the float member 40, i.e. the seal assembly 20 moves with the movement of the float member 30.

In the present embodiment the seal assembly 20 is connected to said float member 30. It can be understood that the sealing assembly 20 is connected with the floating member 30, so that the acting force of the sealing assembly 20 for sealing the communication hole 142 is formed by the gravity of the sealing assembly 20 and the gravity of the floating member 30, thereby effectively improving the sealing effect of the communication hole 142, and avoiding the problems that when the valve assembly 202 is opened, fluid enters the control box 40 from the communication hole 142 in advance, so that the floating member 30 is subjected to the buoyancy in advance to drive the sealing assembly 20 to close the channel 12, so that the valve assembly 202 is closed in advance, and the like.

As shown in fig. 2 or 5, the sealing assembly 20 is magnetically attached to the floating member 30. Of course, in other embodiments, the seal assembly 20 and the float 30 may be flexibly connected.

Specifically, one end of the floating member 30 close to the valve body assembly 10 is provided with a magnet 31, and the magnet 31 is magnetically connected with the sealing assembly 20. Of course, in another embodiment, a magnet 31 may also be disposed at one end of the sealing assembly 20 extending into the control box, and the magnet 31 is magnetically connected to the floating member 30.

In this embodiment, the magnet 31 is disposed on the floating member 30, and the magnetic attraction connection between the sealing assembly 20 and the floating member 30 is specifically described by taking the magnet 31 on the floating member 30 as an object of description.

The sealing assembly 20 includes a first sealing member 21, a magnetic member 22 and a second sealing member 23, wherein the first sealing member 21 is sleeved on the magnetic member 22 for sealing the communication hole 11. The magnet 31 is embedded in the floating member 30, and one end of the magnetic member 22 extending into the control box 40 is magnetically connected with the magnet 31. The second sealing element 23 is disposed at an end of the magnetic element 22 away from the control box 40, and is driven by the floating element 30 to open/close the channel 12.

Preferably, in this embodiment, the first sealing member 21 and the second sealing member 23 are rubber members or silicone members.

the floating member 30 is substantially cylindrical, the floating member 30 is disposed in the control box 40, and one end of the floating member 30 is connected to the magnetic member 22. When the floating member 30 is floated by force, the floating member 30 pushes the magnetic member 22 to seal the channel 12 under the action of the floating force, so that the built-in liquid level controller 100 is closed; or, when the floating member 30 falls down, the floating member 30 drives the magnetic member 22 to move, so that the second sealing member 23 is separated from the channel 12, and the built-in liquid level controller 100 is turned on.

As shown in fig. 1, the control box 40 is substantially cylindrical, one end of the control box 40 is detachably mounted on the valve seat 14, the other end is disposed near the bottom of the liquid storage device 201, and the siphon tube assembly 50 is connected to a section of the control box 40 away from the valve seat 14. Here, the detachable structure includes a bolt structure, a snap structure, and the like.

In this embodiment, the control box 40 is mounted on the valve seat 14 by a bolt structure.

Further, a control hole 41 for allowing the fluid in the reservoir 201 to flow into the control box 40 is formed at an end of the control box 40 close to the valve seat 14, so that when the fluid level in the reservoir 201 rises to the control hole 41, the fluid flows into the control box 40 through the control hole 41, the floating member 30 floats under the action of the buoyancy force to push the magnetic member 22 to move, and the second sealing member 23 is arranged in the channel 12 to close the built-in level controller 100, so that the valve assembly 202 is closed to stop filling the reservoir 201.

In this embodiment, the position of the control hole 41 can be set according to the actual fluid level in the reservoir 201 to be controlled. It will be appreciated that when fluid in the reservoir 201 enters the control box 40 through the control port 41, i.e., the valve assembly 202 is closed and fluid injection into the reservoir 201 is stopped, the fluid level in the reservoir 201 is at a maximum level. Therefore, by arranging the control box 40 and the floating part 30, the liquid level of the fluid in the fluid storage device 201 can be flexibly controlled according to different working conditions.

As shown in fig. 1 and 6, a mounting hole 42 is formed at the bottom of the control box 40, one end of the siphon tube assembly 50 extends into the control box 40 from the mounting hole 42 and is hermetically connected with the control box 40, and the other end extends into a predetermined position of the liquid storage device 201.

Specifically, the siphon tube assembly 50 includes a first tube 51 and a second tube 52, two ends of the first tube 51 are respectively provided with an opening, one end of the first tube 51 penetrates through the mounting hole 42 and extends into the control box 40, the other end extends to a predetermined position of the liquid storage device 201, and the first tube 51 is connected with the mounting hole 42 in a sealing manner; the second pipe 52 is hermetically installed in the control box 40, and is sleeved on the first pipe 51 extending into the control box 40, a siphon cavity 53 is enclosed between the second pipe 52 and the first pipe 51, and at least one siphon hole 521 for communicating the control box 40 and the siphon cavity 53 is opened at one end of the second pipe 52 close to the installation hole 42. Thereby allowing fluid communication within control box 40 through siphon hole 521 and into siphon chamber 53.

it should be explained that the predetermined position in the reservoir 201 is a position of a preset minimum liquid level in the reservoir 201. In this position, the float 30 falls and the passageway 12 is open, i.e. the built-in level controller 100 is open, thereby controlling the valve assembly 202 to open and thus replenishing fluid into the reservoir 201.

It can be understood that when the liquid storage device 201 does not need to be supplemented with fluid, and the control box 40 has fluid therein, the fluid drives the floating member 31 to seal the channel 12 under the buoyancy of the fluid; at this time, the end of the first tube 51 far from the end extending into the second tube 52 extends below the liquid level in the liquid storage device 201, that is, at this time, a section of air is sealed in the first tube 52 and the second tube 52 (a section of air is sealed in the siphon cavity 53); when the liquid level of the liquid storage device 201 gradually drops, the sealed air is continuously drawn to be thin (i.e. the air pressure between the first tube 51 and the second tube 52 drops), so that a siphon phenomenon is generated between the control box 40 and the liquid storage device 201, and the fluid in the control box 40 sequentially flows into the liquid storage device 201 through the siphon hole 521, the siphon cavity 53 and the first tube 51, and then the buoyancy force applied to the floating member 30 disappears, and the floating member 30 drives the second sealing member 23 on the magnetic member 22 to separate from the channel 12, so that the built-in liquid level controller 100 is opened, and the valve assembly 202 is opened to supplement the fluid to the liquid storage device 201.

With reference to fig. 6, an end of the first tube 51 extending into the control box 40 is a third end 51a, an end of the second tube 52 away from the mounting hole 42 is a fourth end 52b, a distance between the third end 51a and the fourth end 52b along an axial direction of the second tube 52 is L, and the first tube 51 can move along the axial direction to adjust a size of the L.

It will be appreciated that the siphon phenomenon of the siphon tube assembly 50 occurs at the third end 51a of the first tube 51, i.e. when the fluid in the siphon chamber 50 flows over the third end 51a, a siphon phenomenon occurs between the control tank 40 and the reservoir 201, thereby drawing the fluid in the control tank 40 back into the reservoir 201.

in the present application, the first pipe 51 can move along the axial direction of the second pipe 52, so that the length of the first pipe 51 extending into the control box 40 is controlled to adjust the size of L, that is, the position of the third end 51a of the first pipe 51 in the second pipe 52 is adjusted, thereby achieving the purpose of fine adjustment of the siphon height, and achieving the purpose of adjusting the liquid level in the liquid storage device 201.

Further, the first pipe 51 is a hollow pipe and is made by cutting a hollow stainless steel pipe. The second tube 52 is also a hollow tube. One end of the second tube 52 is open, the other end is closed, and the second tube 52 is made of a hollow stainless steel tube or other material.

In this embodiment, the number of the siphon holes 521 on the second pipe 52 may be plural.

It will be appreciated that the provision of the plurality of siphon holes 521 increases the discharge rate of the fluid within the control tank 40, thereby enabling the built-in level controller 100 to respond quickly and siphon off, thereby opening it quickly. The siphon phenomenon is a force phenomenon using a difference in liquid level, so that the fluid in the control box 40 flows into the liquid storage device 201 through the siphon tube assembly 50.

In this embodiment, the air sealed inside the second tube 52 and the first tube 51 is constant. By changing the inner diameters of the second tube 52 and the first tube 51, the amount of air that can be stored in the second tube 52 and the first tube 51 can be changed, and further the air pressure in the tubes can be changed, so that the height of the siphon generated by the siphon tube assembly 50 is different, and the liquid level in the liquid storage device 201 can be adjusted accordingly. Of course, in other embodiments, the amount of air that can be sealed in the second tube 52 and the first tube 51 can be adjusted by other methods, which are not described herein.

As shown in FIG. 6, the siphon tube assembly 50 further includes a connector 54, the connector 54 being sealingly mounted to the mounting hole 42. The connector 54 is provided with a through connection hole 541 along the axial direction thereof, one end of the first tube 51 penetrates into the control box 40 from the connection hole 541 and is hermetically connected with the connection hole 541, and the other end extends into a preset position in the liquid storage device 201; the second tube 52 is hermetically mounted on the connector 54; thus, the first tube 51, the second tube 52 and the connector 54 define a sealed siphon chamber 53 therebetween.

The connecting head 54 has a first end 542 and a second end 543 opposite to each other, and the second tube 52 has an open end connected to the first end 542.

Preferably, the open end of the second tube 52 is welded to the first end 542. It will be appreciated that the first tubular body 52 is welded to the first end 542, i.e., a sealed connection between the second tubular body 52 and the connector 54 is simultaneously achieved. Of course, in other embodiments, the seal between the second tube 52 and the connector 54 may also be in the form of a sealing ring.

Preferably, the first end 542 has a step, and an open end of the second tube 52 is sleeved on the step and welded to the step.

Furthermore, a containing groove 31 is formed at one end of the floating member 30 facing the connector 54, and one end of the second tube 52 far from the connector 54 extends into the containing groove 31.

it can be understood that, by forming the containing groove 31 on the floating member 30, when the liquid enters the control box 40, a part of the air is sealed in the containing groove 31, so that the floating member 30 is easier to float under the action of the liquid in the control box 40. Meanwhile, the accommodating groove 31 is formed to avoid the installation of the second pipe 52, so that the second pipe 52 is better accommodated in the control box 40, and the space of the control box 40 is saved, so that the whole built-in liquid level controller 100 has a more compact structure and occupies a smaller space.

Further, as shown in fig. 6, the siphon tube assembly 50 further includes a connecting cap 55 and a sealing member 56, the connecting cap 55 and the sealing member 56 are all sleeved on the first tube 51 located outside the control box, the connecting cap 55 is connected to the second end 543 and presses the sealing member 56 to the second end 543, so that the sealing member 56 seals a gap between the first tube 51 and the connecting head 54, thereby preventing the pressure in the first tube 52 from leaking out and affecting the siphon phenomenon.

Preferably, the sealing member 56 is a metal sheet or made of other harder material, i.e. the first tube 51 and the connecting head 54 are sealed by hard sealing; of course, in other embodiments, the sealing element 56 may also be a rubber ring or the like, i.e. the first tube 51 and the connecting head 54 are sealed by soft sealing.

Further, the connection cap 55 is screwed to the second end 543, the connection cap 55 has a bevel 561 therein, and when the connection cap 55 is screwed to the second end 543, the bevel 561 presses the sealing member 56, so that the sealing member seals the gap between the first tube 51 and the connection head 54.

it can be understood that, by connecting the connecting cap 55 and the second end 543 by screw threads, the first tube 51 can be easily disassembled and assembled, so as to adjust the length of the first tube 51 extending into the second tube 52; meanwhile, the maintenance and the connection are more convenient,

As shown in fig. 1 or 4, the built-in level controller 100 further includes a waterproof cover 60, the waterproof cover 60 covers one end of the control box 40 close to the valve seat 14, an accommodating cavity 61 is defined by the waterproof cover 60 and an outer wall of the control box 40, and the control hole 41 is located in the accommodating cavity 61 to protect the control hole 41 and prevent fluid splashed in the liquid storage device 201 from entering the control box 40 from the control hole 41.

The working principle of the built-in level controller 100 is explained as follows:

(1) Initial state: the valve assembly 202 is in the closed position; the floating member 30 falls into the control box 40 under the action of its own gravity, the passage 12 is opened, and the built-in liquid level controller 100 is in an open state.

(2) Valve component 202 opening procedure: when the fluid enters for the first time, due to the initial state, the built-in level controller 100 is in the open state, a part of the fluid at the main inlet 111 enters from the liquid through hole 141 and then flows out from the first inlet 151 to the liquid storage device 201, i.e. there is no fluid pressure in the main valve chamber 202e, and under the action of the fluid pressure, the main valve flap 202b moves, the valve assembly 202 is opened, and the fluid flows into the liquid storage device 201 from the main outlet 112.

(3) Valve assembly 202 closure procedure: when the liquid level in the liquid storage device 201 rises to the highest liquid level, the fluid in the liquid storage device 201 enters the control box 40 through the control hole 41 on the control box 40 or the siphon pipe assembly 50; at this time, the floating member 30 is subjected to the buoyancy of the fluid to drive the second sealing member 23 to seal the channel 12, and the built-in liquid level controller 100 is closed;

When the built-in liquid level controller 100 is closed, the main valve chamber 202e is continuously filled with fluid, and as the fluid pressure in the main valve chamber 202e is continuously increased, the fluid pressure in the main valve chamber 202e pushes the main valve flap 202b to move, and the valve assembly 202 is closed.

(4) The liquid level control process of the liquid storage device 201 is as follows: when the liquid level in the liquid storage device 201 reaches the highest point, the built-in liquid level controller 100 is closed, so that the valve assembly 202 is also closed, which has been described in detail in the closing process of the valve assembly 202 and is not described again;

When the liquid level in the liquid storage device 201 reaches the lowest point, firstly, along with the descending of the liquid level in the liquid storage device 201, when the liquid level descends to a preset position, a siphon phenomenon is generated between the control box 40 and the liquid storage device 201, and the fluid in the control box 40 is sucked into the liquid storage device 201 through the second pipe 52 and the first pipe 51, so that the buoyancy force borne by the floating piece 30 disappears, the floating piece 30 descends, the second sealing assembly 23 is separated from the channel 12, and the liquid passing hole 131 is communicated with the first outlet 11, namely, the built-in liquid level controller 100 is opened;

After the built-in level controller 100 is opened, the fluid pressure in the main valve chamber 202e is discharged through the first outlet 11, the main valve flap 202b moves under the pressure of the fluid itself, and then the valve assembly 202 is opened. Then, a circulation process is performed to control the opening and closing of the valve assembly 202 by the liquid level control 20, so as to control the liquid level in the liquid storage device 201.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

the above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.

Claims

1. a built-in liquid level controller is arranged in a liquid storage device and used for controlling the liquid level of fluid in the liquid storage device, and is characterized by comprising a valve body assembly, a control box, a floating piece, a sealing assembly and a siphon tube assembly; the valve body assembly is arranged at one end of the control box, the floating piece is accommodated in the control box, the sealing assembly is arranged in the valve body assembly, one end of the sealing assembly extends into the control box and is connected with the floating piece, and the other end of the sealing assembly is used for opening and closing the built-in liquid level controller; one end of the control box, which is close to the valve body assembly, is provided with a control hole for fluid to flow in, and one end of the control box, which is far away from the valve body assembly, is provided with a mounting hole;

2. the built-in liquid level controller according to claim 1, wherein the siphon tube assembly further comprises a connector, the connector is hermetically mounted in the mounting hole, the connector is provided with a connecting hole along an axial direction of the connector, the first tube penetrates into the control box from the connecting hole, and the second tube is mounted on the connector.

3. The built-in liquid level controller according to claim 2, wherein the connector has a first end and a second end opposite to each other, the first end is located inside the control box, the second end is located outside the control box, one end of the second tube is open, and the open end of the second tube is connected to the first end.

4. the internal liquid level controller as claimed in claim 3, wherein the siphon tube assembly further comprises a connecting cap and a sealing member, the connecting cap and the sealing member are both sleeved on the first tube body located outside the control box, and the connecting cap is connected with the second end and presses the sealing member against the second end, so that the sealing member seals a gap between the first tube body and the connector.

5. The internal level controller of claim 1, wherein the end of the first tube extending into the control box is a third end, the end of the second tube away from the mounting hole is a fourth end, and the first tube is movable along the axis of the second tube to adjust the distance between the third end and the fourth end.

6. The built-in liquid level controller as claimed in claim 1, wherein the floating member has an accommodating groove with an opening at an end facing the mounting hole, and an end of the second tube body away from the mounting hole extends into the accommodating groove from the opening.

7. the built-in liquid level controller according to claim 1, wherein the valve body assembly is provided with a first outlet and a channel, and one end of the sealing assembly, which is far away from the floating member, is used for opening/closing the channel to open or close the built-in liquid level controller.

8. The built-in level controller of claim 7, wherein the valve body assembly comprises a valve seat connected to the control box and a valve body mounted to the valve seat, the first outlet port is located on the valve seat, and the passage is located on the valve body.

9. The built-in liquid level controller according to claim 7, wherein the valve body assembly comprises a valve seat, a valve body, a valve flap and a valve core, the valve seat is mounted on the control box, the valve body is mounted on the valve seat, the valve flap is located between the valve body and the valve seat and encloses a valve cavity with the valve seat, one end of the valve core is mounted on the valve seat, and the other end of the valve core is arranged through the valve flap and is in clearance arrangement with the valve flap;

10. A liquid level control system is used for controlling the liquid level in a liquid storage device and is characterized by comprising a valve component and an internal liquid level controller, wherein the internal liquid level controller is used for controlling the opening and the closing of the valve component, and the internal liquid level controller adopts the internal liquid level controller as claimed in claim 6.