Automatic control valve device based on liquid level float drive

Abstract

The utility model discloses an automatic control valve device based on liquid level float drive, including main casing, the open end of main casing is equipped with the float ball seat, be equipped with the sealing assembly between float ball seat and main casing, be equipped with the float ball subassembly that can move up and down to it in float ball seat, the sealing assembly and float ball seat surround and form back pressure chamber, the utility model discloses through the float ball subassembly automatic control main casing in the waterway's on-off, through the liquid level change can mechanical control valve's working condition, and the stable reliable structure.

Description

Technical Field

[0001] This utility model belongs to the field of valve accessories technology, specifically relating to an automatic control valve device based on liquid level float drive. Background Technology

[0002] Currently, home appliances using water-based systems are becoming increasingly common, and there are many types of appliances with liquid storage chambers, such as steam ovens, water purifiers, air humidifiers, and robot vacuum cleaners. A patent with publication number CN222507450U discloses a liquid level float switch, comprising: a housing with an internal cavity; an anti-reverse groove located inside the housing; a mounting bracket inserted into the anti-reverse groove, with a storage area inside the bracket; a steel ball disposed within the storage area; a counterweight iron pellet disposed inside the housing; a micro switch located at the top of the mounting bracket, with its cable passing through the counterweight iron pellet and the bottom of the housing; a waterproof cover covering the mounting bracket and the micro switch, and inserted into the counterweight iron pellet; and epoxy resin binding the waterproof cover, counterweight iron pellet, mounting bracket, and housing together. The existing liquid storage chamber requires a microswitch to control the water flow, which needs to be connected to a circuit board and a corresponding control program needs to be created. When the circuit fails, this causes the valve body to fail. The liquid storage chamber fills up and leaks to the outside, causing electrical damage and corresponding property loss. Summary of the Invention

[0003] This invention addresses the problems existing in the prior art by designing an automatic control valve device based on a liquid level float drive. This invention automatically controls the opening and closing of the water passage in the main housing through a float assembly, and mechanically controls the working state of the valve through changes in liquid level. The structure is stable and reliable.

[0004] The purpose of this invention is achieved through the following technical solution: an automatic control valve device based on liquid level float drive, including a main housing, a float seat at the open end of the main housing, and a sealing assembly between the float seat and the main housing; a float assembly that can move up and down relative to the float seat is provided inside the float seat, and the sealing assembly and the float seat surround to form a back pressure chamber.

[0005] Preferably, the float assembly includes a float rod and a float body, the float body is mounted on the float rod and disposed on the outside of the float seat; the float rod is provided with a first sealing ring, and the float rod can move up and down relative to the float seat.

[0006] Preferably, the open end of the float seat is provided with a guide limiting part, and the outer contour of the guide limiting part is adapted to the outer contour of the float rod.

[0007] Preferably, the float rod is provided with a groove, and a first sealing ring is provided in the groove, which is located near the bottom of the float rod; the inner wall of the float seat is provided with an inclined sealing part, and the first sealing ring abuts against the inclined sealing part when the float rod floats with the float body.

[0008] Preferably, the float seat is also provided with a pressure relief port, which is located above the back pressure chamber; the pressure relief port is located between the float body and the first sealing ring, and the pressure relief port is located close to the float body; the pressure relief port is in a conductive state when the float rod floats up.

[0009] Preferably, the sealing assembly includes a sealing ring body and a sealing ring bracket. The sealing ring body is provided with a pressure inlet that connects to the back pressure chamber. The main housing is provided with a water inlet and a water outlet, and the back pressure chamber is located between the water inlet and the water outlet.

[0010] Preferably, the sealing ring body is mounted on the sealing ring bracket, and the edge sealing part of the sealing ring body is installed between the main housing and the float seat; the center of the sealing ring body abuts against the water outlet, and the pressure inlet is located between the water inlet and the back pressure chamber.

[0011] Preferably, the open end of the float seat is provided with a pressure relief port, and the diameter of the pressure relief port is larger than the diameter of the pressure inlet port.

[0012] Preferably, the inlet and outlet are arranged adjacent to each other, and the outer layer of the inlet is provided with several second sealing rings for sealing; the sealing assembly is arranged between the main shell and the float seat, and a buckle is provided between the main shell and the float seat for fixing the two.

[0013] Compared with the prior art, the present invention has the following advantages: 1. The float assembly is small in size, easy to install and can be adapted to the liquid storage chambers of various household appliances, with good versatility; 2. Both the float assembly and the sealing assembly are mechanical structures, which can control the opening and closing of the valve without the need for a circuit structure, making it safer and more reliable to use; 3. Water is passed through the back pressure chamber structure, which can be used in working environments with high inlet pressure and high flow rate. Attached Figure Description

[0014] Figure 1 This is an exploded view of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the present invention in the water-flow state. Figure 4 This is a schematic diagram of the present invention in the water-blocking state. The markings in the diagram are: 1. Main housing; 2. Float seat; 3. Sealing assembly; 31. Sealing ring body; 32. Sealing ring bracket; 33. Pressure inlet; 4. Float assembly; 41. Float rod; 42. Float body; 43. First sealing ring; 44. Limiting part; 45. Slot; 46. Inclined sealing part; 47. Pressure relief port; 5. Back pressure chamber; 6. Water inlet; 7. Water outlet; 8. Second sealing ring; 9. Buckle. Detailed Implementation

[0015] The present invention will be further described below with reference to the embodiments shown in the accompanying drawings: like Figures 1 to 4 As shown, this embodiment discloses an automatic control valve device based on liquid level float drive, including a main housing 1, a float seat 2 provided at the open end of the main housing 1, a sealing assembly 3 provided between the float seat 2 and the main housing 1; a float assembly 4 that can move up and down relative to the float seat 2 is provided inside the float seat 2, and the sealing assembly 3 and the float seat 2 surround to form a back pressure chamber 5.

[0016] The float assembly 4 includes a float rod 41 and a float body 42. The float body 42 is mounted on the float rod 41 and is located on the outside of the float seat 2. The float rod 41 is provided with a first sealing ring 43 and can move up and down relative to the float seat 2. The open end of the float seat 2 is provided with a guide limiting part 44, the outer contour of which is adapted to the outer contour of the float rod 41. The float rod 41 is provided with a groove 45, and the first sealing ring 43 is provided in the groove 45. The groove 45 is located near the bottom of the float rod 41. The inner wall of the float seat 2 is provided with an inclined sealing part 46. When the float rod 41 floats up with the float body 42, the first sealing ring 43 abuts against the inclined sealing part 46. The float seat 2 is also provided with a pressure relief port 47, which is located above the back pressure chamber 5. The pressure relief port 47 is located between the float body 42 and the first sealing ring 43, and the pressure relief port 47 is located close to the float body 42. When the float rod 41 floats, the pressure relief port 47 is in a conductive state.

[0017] The sealing assembly 3 includes a sealing ring body 31 and a sealing ring bracket 32. The sealing ring body 31 is provided with a pressure inlet 33 that connects to the back pressure chamber 5. The main housing 1 is provided with a water inlet 6 and a water outlet 7, and the back pressure chamber 5 is located between the water inlet 6 and the water outlet 7. The sealing ring body 31 is mounted on the sealing ring bracket 32, and the edge sealing portion of the sealing ring body 31 is installed between the main housing 1 and the float seat 2. The center of the sealing ring body 31 abuts against the water outlet 7, and the pressure inlet 33 is located between the water inlet 6 and the back pressure chamber 5. A float rod 41 is floatingly installed inside the float seat 2, and the open end of the float seat is provided with a pressure relief port 47, the diameter of which is larger than the diameter of the pressure inlet 33. The inlet 6 and outlet 7 are arranged adjacent to each other. The outer layer of the inlet 6 is provided with several second sealing rings 8 for sealing. The sealing assembly 3 is arranged between the main housing 1 and the float seat 2. The main housing 1 and the float seat 2 are provided with buckles 9 for fixing the two.

[0018] The specific operation process of this embodiment is as follows. This utility model often needs to be used in conjunction with the water storage chamber of a household appliance. When the water storage chamber is in the water-inlet state, liquid enters from the water inlet 6 of the main housing 1, and the liquid enters the back pressure chamber 5 from the pressure inlet 33 on the sealing ring body 31. Since the water storage chamber starts to enter water at this time, the liquid level is low. Thus, the first sealing ring 43 on the float rod 41 is set away from the inclined sealing part 46, and the open end of the float seat 2 is in the conductive state. The liquid in the back pressure chamber 5 can be discharged from the open end of the float seat 2. At this time, the back pressure chamber 5 is in an unclosed state, and pressure can be continuously released through the pressure relief port 47 on the float seat 2. Since the orifice diameter of the pressure relief port 47 is set larger than the orifice diameter of the pressure inlet 33, the pressure in the back pressure chamber 5 is less than the pressure in the chamber where the water inlet 6 is located. Under the action of water pressure, the center of the sealing ring body 31 is pushed away from the sealing end of the water outlet 7. Then the water outlet 7 is in the open state, and the liquid can be continuously discharged from the water outlet 7.

[0019] As the liquid level in the water storage chamber rises, the main shell 1 will be in a water-blocking and closed state. The float body 42 rises with the liquid level, and when the float body 42 rises, it drives the float rod 41 to rise. In this way, the first sealing ring 43 on the float rod 41 will abut against the inclined sealing part 46, and the open end of the float seat 2 will be in an isolated state. At this time, the back pressure chamber 5 is in a closed state and cannot be depressurized through the pressure relief port 47. The water pressure in the back pressure chamber 5 is the same as the pressure in the chamber where the water inlet 6 is located in the main shell 1. At this time, the water pressure at the outlet 7 is less than the water pressure at the inlet 6 and the back pressure chamber 5. The back pressure chamber 5 generates downward pressure, causing the sealing ring body 31 to press against the sealing end of the outlet 7, thereby achieving the water-blocking state of the main shell 1.

[0020] When the water inlet 6 stops supplying water, the pressure inside the main housing 1 disappears; as the user continues to use water, the liquid level in the water storage chamber drops, and the float body 42 descends. Thus, the float rod 41 and the first sealing ring 43 return to their initial positions under the action of gravity, and the main housing 1 is reopened.

[0021] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to replace them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. An automatic control valve device based on a liquid level float drive, comprising a main housing (1), characterized in that, The main housing (1) has a float seat (2) at its open end, and a sealing assembly (3) is provided between the float seat (2) and the main housing (1); the float seat (2) has a float assembly (4) that can move up and down relative to it, and the sealing assembly (3) and the float seat (2) surround each other to form a back pressure chamber (5).

2. The automatic control valve device based on liquid level float drive according to claim 1, characterized in that, The float assembly (4) includes a float rod (41) and a float body (42). The float body (42) is mounted on the float rod (41) and is located on the outside of the float seat (2). The float rod (41) is provided with a first sealing ring (43), and the float rod (41) can move up and down relative to the float seat (2).

3. The automatic control valve device based on liquid level float drive according to claim 2, characterized in that, The open end of the float seat (2) is provided with a guide limiting part (44), and the outer contour of the guide limiting part (44) is adapted to the outer contour of the float rod (41).

4. The automatic control valve device based on liquid level float drive according to claim 2, characterized in that, The float rod (41) is provided with a slot (45), and a first sealing ring (43) is provided in the slot (45). The slot (45) is located near the bottom of the float rod (41). The inner wall of the float seat (2) is provided with an inclined sealing part (46). When the float rod (41) floats up with the float body (42), the first sealing ring (43) abuts against the inclined sealing part (46).

5. The automatic control valve device based on liquid level float drive according to claim 2, characterized in that, The float seat (2) is also provided with a pressure relief port (47), which is located above the back pressure chamber (5); the pressure relief port (47) is located between the float body (42) and the first sealing ring (43), and the pressure relief port (47) is located close to the float body (42); when the float rod (41) floats up, the pressure relief port (47) is in a conductive state.

6. The automatic control valve device based on liquid level float drive according to claim 1, characterized in that, The sealing assembly (3) includes a sealing ring body (31) and a sealing ring bracket (32). The sealing ring body (31) is provided with an inlet (33) that connects to the back pressure chamber (5). The main housing (1) is provided with an inlet (6) and an outlet (7). The back pressure chamber (5) is located between the inlet (6) and the outlet (7).

7. The automatic control valve device based on liquid level float drive according to claim 6, characterized in that, The sealing ring body (31) is installed on the sealing ring bracket (32), and the edge sealing part of the sealing ring body (31) is installed between the main shell (1) and the float seat (2); the center of the sealing ring body (31) abuts against the water outlet (7), and the pressure inlet (33) is located between the water inlet (6) and the back pressure chamber (5).

8. The automatic control valve device based on liquid level float drive according to claim 7, characterized in that, The float seat (2) has a pressure relief port (47) at its open end, and the diameter of the pressure relief port (47) is larger than the diameter of the pressure inlet (33).

9. The automatic control valve device based on liquid level float drive according to claim 6, characterized in that, The inlet (6) and outlet (7) are arranged adjacent to each other. The outer layer of the inlet (6) is provided with several second sealing rings (8) for sealing. The sealing assembly (3) is arranged between the main housing (1) and the float seat (2). The main housing (1) and the float seat (2) are provided with buckles (9) for fixing the two.

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