Remote control liquid level self-control floating ball valve

Abstract

The invention relates to the technical field of floating ball valves, in particular to a remote control liquid level self-control floating ball valve which comprises a valve body, a valve seat is arranged in the valve body, a water inlet and a water outlet are formed in the two ends of the valve body respectively, a control port is formed in the upper end of the valve body, a valve cover is arranged on the valve body, an upper guide part is arranged in the control port, and a lower guide part is arranged in the valve cover. A clamping piece is arranged on the upper guide piece, a diaphragm is clamped between the upper guide piece and the clamping piece, the peripheral edge of the diaphragm is clamped between the valve body and the valve cover, a second spring is fixedly connected between the rotating ring body and the clamping piece, and a mounting cylinder is arranged at the position, located on the outer side of the periphery of the adjusting nut, of the upper end of the valve cover; a servo motor used for driving the adjusting nut to rotate is mounted on the mounting cylinder, and when the servo motor drives the adjusting nut to rotate, the second spring generates tension or pressure change on the clamping piece. The floating ball valve solves the technical problems that the pressure of an existing floating ball valve cannot be adjusted, and micropore adjustment is not facilitated.

Description

Technical Field

[0001] The invention relates to the technical field of float valves, and in particular to a remote-controlled liquid level automatic float valve. Background Art

[0002] At present, the float valve is a common part for controlling the opening and closing of the water inlet pipe in the water level box, which includes a main valve and a float control valve connected to the upper cavity water outlet of the main valve, and the float control valve is connected to the float. When the water level rises to the closed position of the float control valve, the main valve is closed and the water inlet stops. At present, there are many improvements based on the float valve, such as a pressure-stabilizing remote-controlled float valve disclosed in Chinese patent publication number: CN110107730A. The bypass valve serves as a bypass pipe of the self-closing valve and supplies water from the upstream cavity to the control room together with the self-closing valve. The control room supplies water to the float valve through the pressure reducing valve. The float and the pressure reducing valve control the switch and opening size of the float valve by means of up and down force and set pressure respectively. The switch state and opening size of the float valve affect the size of the flow rate of the downstream cavity of the hydraulic control valve. The self-closing valve controls the water supply flow and pressure of the upstream cavity to the control room according to the size of the upstream cavity pressure, thereby affecting the flow size of the downstream cavity to achieve the purpose of stabilizing the upstream cavity pipe network pressure; and when the float is subjected to downward force by the liquid level, the float pulls the float valve to open the valve, and when the float is subjected to upward force by the liquid level, it pushes the float valve to close the valve, thereby achieving the purpose of controlling the upper and lower limit of the liquid level.

[0003] However, the existing remote control float valve often requires a rated pressure when the valve disc and the valve seat cooperate to achieve closure. This pressure is not adjustable and is not conducive to achieving micro-control adjustment. Summary of the invention

[0004] Therefore, in view of the above problems, the present invention proposes a remote-controlled liquid level automatic float valve, which solves the technical problem that the pressure of the existing float valve is not adjustable, which is not conducive to achieving micro-pore adjustment.

[0005] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a remote control liquid level automatic float valve, comprising a valve body, a valve seat is arranged in the valve body, a water inlet and a water outlet are respectively arranged at two ends of the valve body, a control port is arranged on the upper end of the valve body, a valve cover is arranged on the valve body at the control port, an upper guide member which can slide up and down is arranged in the control port, a clamping member is arranged on the upper guide member, a diaphragm is clamped between the upper guide member and the clamping member, the periphery of the diaphragm is clamped between the valve body and the valve cover, a first spring is connected between the clamping member and the inner wall of the valve cover, a valve stem is penetrated through the middle of the upper guide member, the clamping member and the diaphragm, a connecting hole connecting the water inlet and the water outlet is arranged on the valve seat, the lower end of the valve stem extends through the connecting hole, a valve flap assembly for closing the connecting hole is arranged on the lower end of the valve stem, a control chamber is formed by sealing between the valve cover and the diaphragm, and the inlet of the valve body The water outlet end is connected with the control chamber through a first connecting pipe, a needle valve is arranged on the first connecting pipe, the water outlet is connected with a water storage device, a float valve is arranged on the liquid surface of the water storage device, the float valve and the control chamber are connected through a second connecting pipe, a ball valve is arranged on the second connecting pipe, an adjusting port is arranged on the upper end of the valve cover, an adjusting nut is arranged on the adjusting port, the lower end of the adjusting nut passes through the adjusting port and is located in the control chamber, a rotating ring body is rotatably arranged on the lower part of the adjusting nut, a second spring is fixedly connected between the rotating ring body and the clamping member, the second spring is sleeved inside the first spring, a mounting cylinder is arranged on the circumferential outer side of the adjusting nut on the upper end of the valve cover, a servo motor for driving the adjusting nut to rotate is installed on the mounting cylinder, when the servo motor drives the adjusting nut to rotate, the second spring generates a change in tension or pressure on the clamping member.

[0006] Furthermore, the valve flap assembly includes a valve flap body sleeved on the valve stem and located at the upper end of the valve seat, a lower guide member sleeved on the valve stem and a lower sealing member sleeved on the valve stem, the lower guide member is arranged in the connecting port for guiding, and the sealing member is clamped between the valve flap body and the lower guide member.

[0007] Furthermore, a valve disc lower depression is arranged on the lower end surface of the valve disc body, and the lower sealing member is arranged in the valve disc lower depression.

[0008] Furthermore, a plurality of valve disc annular grooves are arranged on the lower depression of the valve disc.

[0009] A sealing protrusion is arranged on the lower end surface of the lower sealing member, a seat body depression is arranged on the valve seat, and the sealing protrusion abuts against the seat body depression.

[0010] Furthermore, the upper end of the valve flap body and the lower end of the upper guide member abut against each other, a valve flap upper recess is provided on the upper end of the valve flap body, and an upper sealing member for sealing the valve flap body and the upper guide member is provided on the valve flap upper recess.

[0011] Furthermore, a guiding protrusion is formed upward in the middle of the upper end of the upper guide member, and a deformation gap is formed between the portion of the upper guide member excluding the guiding protrusion and the diaphragm. A plurality of clamping annular grooves are arranged on the lower end surface of the clamping member, and the height of the deformation gap is 1-2mm.

[0012] Furthermore, a flexible gasket is provided in the deformation gap near the guide protrusion, and the outer diameter of the flexible gasket is smaller than the outer diameter of the clamping member.

[0013] Furthermore, when the valve flap assembly abuts against the valve seat to close the communicating hole, the second spring forms a pulling force on the clamping member, and when the valve flap assembly is in an open and stable state, the second spring forms a pressure on the clamping member.

[0014] By adopting the above technical solution, the beneficial effects of the present invention are:

[0015] 1. In this scheme, the upper guide and the clamping member are used to clamp the center of the diaphragm, and the valve body and the valve cover are used to clamp the periphery of the diaphragm, so as to achieve its stability. In addition, through the cooperation of the first spring, the second spring, the servo motor and the adjusting nut, the pressure adjustment when the float valve is closed can be effectively achieved. The pressure or tension between the second spring and the clamping member can be adjusted according to actual needs. Preferably, when the valve flap assembly abuts against the valve seat to close the connecting hole, the second spring forms a pulling force on the clamping member, and when the valve flap assembly is in an open stable state, the second spring forms a pressure on the clamping member. When the valve flap is open, the second spring forms a slight pressure on the clamping member, and in the process of the valve flap closing the connecting hole, the second spring will transform into a pulling force, thereby forming a buffer for the first spring, effectively increasing the time when the diaphragm changes state, thereby increasing the service life of the diaphragm. Of course, the second spring can also maintain pressure on the clamping member from beginning to end, so that the role is to achieve pressure enhancement and achieve pressure supplement with the first spring.

[0016] 2. The setting of the valve flap assembly can realize that the valve flap assembly forms a more effective sealing structure, thereby realizing effective cooperation with the valve seat. Thus, better opening and sealing can be realized. Among them, the setting of the depression under the valve flap realizes that the lower seal is arranged in the depression under the valve flap, thereby effectively ensuring the stability of the lower seal after being squeezed, and the transition between deformation and recovery is limited by the depression under the valve flap, thereby achieving better shape fixation. In addition, the setting of multiple valve flap annular grooves is also conducive to the deformation requirements of the lower seal, thereby ensuring the stability of the lower seal. Among them, the setting of the sealing protrusion can achieve the effect of sealing reinforcement, and the deformation is mainly concentrated on the sealing protrusion, effectively achieving the effect of sealing reinforcement, and effectively improving the service life of the lower seal. Among them, the upper end of the valve flap body and the lower end of the upper guide member are pressed against each other, and a valve flap upper recess is provided on the upper end of the valve flap body, and an upper sealing member for sealing the valve flap body and the upper guide member is provided on the valve flap upper recess, so that the entire valve stem is effectively supported, and mutual restriction between the valve flap assembly and the upper guide member is achieved, thereby effectively improving the stability of the entire mechanism.

[0017] 3. A guiding protrusion is formed upward in the middle of the upper end of the upper guide member, and a deformation gap is formed between the portion of the upper guide member except the guiding protrusion and the diaphragm. The deformation gap can effectively achieve the diaphragm to give way when deforming, thereby effectively reducing the reduction in fatigue performance of the diaphragm when deforming in the clamping position, thereby effectively improving the service life of the diaphragm when deforming. The setting of the clamping annular groove can achieve effective deformation buffering of the diaphragm, and the setting of the deformation gap can effectively achieve a good deformation space for the diaphragm, and will not cause instability of the diaphragm due to too large a gap. In addition, the setting of the flexible gasket can effectively achieve the buffering of diaphragm deformation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a structural schematic diagram of the present invention.

[0019] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0020] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0021] Figure 4 It is a schematic diagram of the structure of the cooperation between the first spring, the second spring and the valve cover.

[0022] Reference numerals:

[0023] 1. Valve body; 11. Water inlet; 12. Water outlet; 13. Control port; 14. Control chamber; 2. Valve seat; 21. Communication hole; 22. Seat body depression; 3. Valve cover; 31. Adjustment port; 32. Adjustment nut; 33. Rotating ring body; 34. Mounting cylinder; 35. Servo motor; 41. Upper guide; 42. Clamping member; 43. Diaphragm; 44. Deformation gap; 45. Flexible gasket; 411. Guide convex part; 421. Clamping member Annular groove; 51, first spring; 52, second spring; 6, valve stem; 7, valve disc assembly; 71, valve disc body; 72, lower guide; 73, lower sealing member; 711, lower depression of valve disc; 712, annular groove of valve disc; 713, upper depression of valve disc, 714, upper sealing member; 731, sealing protrusion; 81, first connecting pipe connection; 82, needle valve; 83, float valve; 84, second connecting pipe; 85, ball valve; 9, water storage device. DETAILED DESCRIPTION

[0024] The present invention will now be further described with reference to the accompanying drawings and specific implementation methods.

[0025] refer to Figures 1 to 4 The present embodiment provides a remote control liquid level automatic float valve, comprising a valve body 1, a valve seat 2 is arranged in the valve body 1, a water inlet 11 and a water outlet 12 are arranged at both ends of the valve body 1, a control port 13 is arranged on the upper end of the valve body 1, a valve cover 3 is arranged on the valve body 1 at the control port 13, an upper guide 41 which can slide up and down is arranged in the control port 13, a clamping member 42 is arranged on the upper guide 41, a diaphragm 43 is clamped between the upper guide 41 and the clamping member 42, the periphery of the diaphragm 43 is clamped between the valve body 1 and the valve cover 3, a first spring 51 is connected between the clamping member 42 and the inner wall of the valve cover 3, a valve stem 6 is penetrated in the middle of the upper guide 41, the clamping member 42 and the diaphragm 43, a valve seat 2 is provided with a valve stem 6 which connects the water inlet 11 and the valve seat 2, and a valve stem 6 which connects the water inlet 11 and the ... The connecting hole 21 of the water outlet 12, the lower end of the valve stem 6 extends through the connecting hole 21, and a valve flap assembly 7 for closing the connecting hole 21 is arranged on the lower end of the valve stem 6. The valve cover 3 and the diaphragm 43 are closed to form a control chamber 14. The water inlet 11 end of the valve body 1 is connected to the control chamber 14 through a first connecting pipe 81, and a needle valve 82 is arranged on the first connecting pipe. The water outlet 12 is connected to a water storage device 9, and a float valve 83 is arranged on the liquid surface of the water storage device 9. The float valve 83 is connected to the control chamber 14 through a second connecting pipe 84, and a ball valve 85 is arranged on the second connecting pipe 84. A guiding protrusion 411 is formed upward in the middle part of the upper end of the upper guide member 41, and a plurality of clamping annular grooves 421 are arranged on the lower end surface of the clamping member 42.

[0026] The upper end of the valve cover 3 is provided with an adjustment port 31, and an adjustment nut 32 is provided on the adjustment port 31. The lower end of the adjustment nut 32 passes through the adjustment port 31 and is located in the control chamber. The lower part of the adjustment nut 32 is rotatably provided with a rotating ring body 33, and a second spring 52 is fixedly connected between the rotating ring body 33 and the clamping member. The second spring 52 is sleeved inside the first spring 51. A mounting cylinder 34 is provided on the outer side of the circumference of the adjustment nut 32 on the upper end of the valve cover 3. A servo motor 35 for driving the adjustment nut 32 to rotate is installed on the mounting cylinder 34. When the servo motor 35 drives the adjustment nut 32 to rotate, the second spring 52 generates a change in tension or pressure on the clamping member 42. When the valve flap assembly 7 abuts against the valve seat 2 to close the connecting hole 21, the second spring 52 forms a tension on the clamping member 42, and when the valve flap assembly 7 is in an open stable state, the second spring 52 forms a pressure on the clamping member 42.

[0027] The needle valve 82 and the float valve 83 are conventional devices in the art. The water outlet 12 and the water storage device 9 are interconnected.

[0028] The valve flap assembly 7 includes a valve flap body 71 sleeved on the valve stem 6 and located at the upper end of the valve seat 2, a lower guide 72 sleeved on the valve stem 6, and a lower sealing member 73 sleeved on the valve stem 6. The lower guide 72 is arranged in the communication port for guiding, and the sealing member is clamped between the valve flap body 71 and the lower guide 72. A valve flap lower recess 711 is arranged on the lower end surface of the valve flap body 71, and the lower sealing member 73 is arranged in the valve flap lower recess 711. A plurality of valve flap annular grooves 712 are arranged on the valve flap lower recess 711. A sealing protrusion 731 is arranged on the lower end surface of the lower sealing member 73, and a seat body recess 22 is arranged on the valve seat 2. The sealing protrusion 731 abuts against the seat body recess 22. The upper end of the valve flap body 71 abuts against the lower end of the upper guide member 41 , and a valve flap upper recess 713 is provided on the upper end of the valve flap body 71 . An upper sealing member 714 for sealing the valve flap body 71 and the upper guide member 41 is provided on the valve flap upper recess 713 .

[0029] A deformation gap 44 is formed between the upper guide member 41 and the diaphragm 43 except for the guide protrusion 411. The height of the deformation gap 44 is 1-2 mm. The specific size can be selected according to actual needs, such as 1 mm, 1.5 mm, and 2 mm. A flexible gasket 45 is provided in the deformation gap 44 near the guide protrusion 411. The outer diameter of the flexible gasket 45 is smaller than the outer diameter of the clamping member 42. Preferably, the outer diameter of the flexible gasket 45 is 2 / 3 to 4 / 5 of the outer diameter of the clamping member 42.

[0030] When the pipeline supplies water from the water inlet, since the needle valve, ball valve and float valve are normally open, water enters the water storage device through the needle valve, control chamber, ball valve and float valve. At this time, no pressure is formed in the control chamber, and the valve stem drives the valve disc assembly to move upward, so that the water inlet is connected with the water outlet to realize water supply, and water flows through the water inlet and outlet into the water storage device.

[0031] When the water level in the water storage device rises to the set height, the float rises to close the float valve, and the water pressure in the control chamber increases, pushing the diaphragm to drive the valve stem downward, thereby driving the valve disc assembly to close the connecting hole on the valve seat, achieving closure and stopping water supply.

[0032] When the water level drops, the float valve reopens, controls the chamber water pressure to drop, and then opens again to continue supplying water to maintain the set height of the liquid level.

[0033] Of course, a certain delay mechanism can also be set so that the water surface meets a certain value higher than the set height.

[0034] The beneficial effects of the present invention are:

[0035] 1. In this scheme, the upper guide and the clamping member are used to clamp the center of the diaphragm, and the valve body and the valve cover are used to clamp the periphery of the diaphragm, so as to achieve its stability. In addition, through the cooperation of the first spring, the second spring, the servo motor and the adjusting nut, the pressure adjustment when the float valve is closed can be effectively achieved. The pressure or tension between the second spring and the clamping member can be adjusted according to actual needs. Preferably, when the valve flap assembly abuts against the valve seat to close the connecting hole, the second spring forms a pulling force on the clamping member, and when the valve flap assembly is in an open stable state, the second spring forms a pressure on the clamping member. When the valve flap is open, the second spring forms a slight pressure on the clamping member, and in the process of the valve flap closing the connecting hole, the second spring will transform into a pulling force, thereby forming a buffer for the first spring, effectively increasing the time when the diaphragm changes state, thereby increasing the service life of the diaphragm. Of course, the second spring can also maintain pressure on the clamping member from beginning to end, so that the role is to achieve pressure enhancement and achieve pressure supplement with the first spring.

[0036] 2. The setting of the valve flap assembly can realize that the valve flap assembly forms a more effective sealing structure, thereby realizing effective cooperation with the valve seat. Thus, better opening and sealing can be realized. Among them, the setting of the depression under the valve flap realizes that the lower seal is arranged in the depression under the valve flap, thereby effectively ensuring the stability of the lower seal after being squeezed, and the transition between deformation and recovery is limited by the depression under the valve flap, thereby achieving better shape fixation. In addition, the setting of multiple valve flap annular grooves is also conducive to the deformation requirements of the lower seal, thereby ensuring the stability of the lower seal. Among them, the setting of the sealing protrusion can achieve the effect of sealing reinforcement, and the deformation is mainly concentrated on the sealing protrusion, effectively achieving the effect of sealing reinforcement, and effectively improving the service life of the lower seal. Among them, the upper end of the valve flap body and the lower end of the upper guide member are pressed against each other, and a valve flap upper recess is provided on the upper end of the valve flap body, and an upper sealing member for sealing the valve flap body and the upper guide member is provided on the valve flap upper recess, so that the entire valve stem is effectively supported, and mutual restriction between the valve flap assembly and the upper guide member is achieved, thereby effectively improving the stability of the entire mechanism.

[0037] 3. A guiding protrusion is formed upward in the middle of the upper end of the upper guide member, and a deformation gap is formed between the portion of the upper guide member except the guiding protrusion and the diaphragm. The deformation gap can effectively achieve the diaphragm to give way when deforming, thereby effectively reducing the reduction in fatigue performance of the diaphragm when deforming in the clamping position, thereby effectively improving the service life of the diaphragm when deforming. The setting of the clamping annular groove can achieve effective deformation buffering of the diaphragm, and the setting of the deformation gap can effectively achieve a good deformation space for the diaphragm, and will not cause instability of the diaphragm due to too large a gap. In addition, the setting of the flexible gasket can effectively achieve the buffering of diaphragm deformation.

[0038] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, it should be understood by those skilled in the art that various changes may be made to the present invention in form and details without departing from the spirit and scope of the present invention as defined by the appended claims, all of which are within the scope of protection of the present invention.

Claims

1. A remote-controlled liquid level automatic float valve, characterized in that: The closure of the valve body is provided with a valve seat, and two ends of the valve body are respectively provided with a water inlet and a water outlet, a control port is provided on the upper end of the valve body, and a valve cover is provided on the valve body at the control port, an upper guide member which can slide up and down is provided in the control port, a clamping member is provided on the upper guide member, a diaphragm is clamped between the upper guide member and the clamping member, the periphery of the diaphragm is clamped between the valve body and the valve cover, a first spring is connected between the clamping member and the inner wall of the valve cover, a valve stem is passed through the middle of the upper guide member, the clamping member and the diaphragm, a communicating hole connecting the water inlet and the water outlet is provided on the valve seat, the lower end of the valve stem extends through the communicating hole, a valve flap assembly for closing the communicating hole is provided on the lower end of the valve stem, a control chamber is formed by sealing between the valve cover and the diaphragm, and a first communicating pipe is passed between the water inlet end of the valve body and the control chamber Connection, a needle valve is arranged on the first connecting pipe, the water outlet is connected to a water storage device, a float valve is arranged on the liquid surface of the water storage device, the float valve is connected to the control chamber through a second connecting pipe, a ball valve is arranged on the second connecting pipe, an adjusting port is arranged on the upper end of the valve cover, an adjusting nut is arranged on the adjusting port, the lower end of the adjusting nut passes through the adjusting port and is located in the control chamber, a rotating ring body is rotatably arranged on the lower part of the adjusting nut, a second spring is fixedly connected between the rotating ring body and the clamping member, the second spring is sleeved inside the first spring, a mounting cylinder is arranged on the circumferential outer side of the adjusting nut on the upper end of the valve cover, a servo motor for driving the adjusting nut to rotate is installed on the mounting cylinder, when the servo motor drives the adjusting nut to rotate, the second spring generates a change in tension or pressure on the clamping member.

2. A remote-controlled liquid level automatic float valve according to claim 1, characterized in that: The valve flap assembly includes a valve flap body sleeved on the valve stem and located at the upper end of the valve seat, a lower guide member sleeved on the valve stem and a lower sealing member sleeved on the valve stem. The lower guide member is arranged in the connecting port for guiding, and the sealing member is clamped between the valve flap body and the lower guide member.

3. A remote-controlled liquid level automatic float valve according to claim 2, characterized in that: A valve disc lower depression is arranged on the lower end surface of the valve disc body, and the lower sealing member is arranged in the valve disc lower depression.

4. A remote-controlled liquid level automatic float valve according to claim 3, characterized in that: A plurality of valve disc annular grooves are arranged on the lower depression of the valve disc.

5. A remote-controlled liquid level automatic float valve according to claim 2, characterized in that: A sealing protrusion is arranged on the lower end surface of the lower sealing member, a seat body depression is arranged on the valve seat, and the sealing protrusion abuts against the seat body depression.

6. A remote-controlled liquid level automatic float valve according to claim 2, characterized in that: The upper end of the valve flap body and the lower end of the upper guide member abut against each other, a valve flap upper recess is arranged on the upper end of the valve flap body, and an upper sealing member for sealing the valve flap body and the upper guide member is arranged on the valve flap upper recess.

7. The remote-controlled liquid level automatic float valve according to claim 1, characterized in that: A guiding protrusion is formed upward in the middle of the upper end of the upper guide member, and a deformation gap is formed between the upper guide member except the guiding protrusion and the diaphragm. A plurality of clamping annular grooves are arranged on the lower end surface of the clamping member, and the height of the deformation gap is 1-2mm.

8. The remote-controlled liquid level automatic float valve according to claim 7, characterized in that: A flexible gasket is arranged in the deformation gap near the guide protrusion, and the outer diameter of the flexible gasket is smaller than the outer diameter of the clamping member.

9. The remote-controlled liquid level automatic float valve according to claim 1, characterized in that: When the valve flap assembly abuts against the valve seat to close the communicating hole, the second spring forms a pulling force on the clamping member, and when the valve flap assembly is in an open and stable state, the second spring forms a pressure on the clamping member.

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