Quick-response floating ball valve

Abstract

The utility model provides a quick-response floating ball valve which is characterized in that a pull rod is mounted on a floating ball, one end of the pull rod is detachably connected to a connecting rod, the connecting rod is rotatably connected to a connecting seat, the connecting seat is fixedly mounted on a valve, a first gear is fixedly arranged at one end of the connecting rod, and a second gear is rotatably connected to the valve; the first gear is meshed with the second gear, the floating ball can float on the liquid medium, the liquid level of the liquid medium is used for driving the floating ball to move up and down, the floating ball moving up and down can drive the first gear to rotate relative to the connecting base, the first gear rotating relative to the connecting base can drive the second gear to rotate, and the rotating second gear is used for controlling opening and closing of the valve. According to the quick-response floating ball valve, the response speed of liquid level floating to opening and closing of the valve can be adjusted by adjusting the length of the pull rod during implementation, and the floating ball moves up and down by means of the gravity and buoyancy of the floating ball, so that the first gear and the second gear are driven to rotate, and opening and closing of the valve are achieved.

Description

Technical Field

[0001] The utility model belongs to the field of valves, in particular to a quick-response float valve. Background Art

[0002] The float valve is a valve composed of a crank arm and a float, which can be used to automatically control the liquid level of a water tower or pool. It has the characteristics of simple maintenance, flexibility and durability, and high liquid level control accuracy. In application, the float must always float on the water. When the water level rises, the float also rises. The rise of the float drives the connecting rod to rise. The connecting rod is connected to the valve at the other end. When it rises to a certain position, the connecting rod supports the rubber piston pad and closes the water source. When the water level drops, the float also drops, and the connecting rod drives the piston pad to open. In the prior art, when the float and the crank arm are connected to the piston, a torsion spring is usually installed to make the piston respond quickly through the elasticity of the torsion spring. The torsion spring is easily corroded by long-term contact with the liquid medium, and when the pressure difference in the pipeline is too large, it is easy to cause poor sealing of the piston and pipeline leakage. Utility Model Content

[0003] In view of this, the utility model aims to propose a fast response float valve to solve the problems of the prior art float valve having slow response efficiency due to the influence of liquid level floating and easy leakage due to excessive pressure in the upstream pipeline.

[0004] In order to achieve the above object, the technical solution of the utility model is implemented as follows:

[0005] A quick response float valve comprises a float, a pull rod, a connecting rod, a transmission tooth and a connecting seat. The pull rod is installed on the float, one end of the pull rod is detachably connected to the connecting rod, and the connecting rod is rotatably connected to the connecting seat, the connecting seat is fixedly installed on the valve, one end of the connecting rod is fixedly provided with a first gear, the valve is rotatably connected to a second gear, the first gear and the second gear are meshed, the float can float on a liquid medium, the liquid surface of the liquid medium is used to drive the float to move up and down, the floating ball that moves up and down can drive the first gear to rotate relative to the connecting seat, the relatively rotating first gear can drive the second gear to rotate, and the rotating second gear is used to control the opening and closing of the valve.

[0006] Furthermore, the valve includes a valve body, a valve stem and a valve core, the two ends of the valve body are respectively fixedly connected to the upstream pipeline and the downstream pipeline, the second gear is rotatably sleeved on the valve body through the central axis, and the connecting seat is fixedly installed on the valve body, a valve stem is arranged in the valve body, a valve core is arranged at one end of the valve stem, a first bevel gear is installed on the other end of the valve stem, a second bevel gear is arranged on the central axis, and the first bevel gear is meshed with the second bevel gear.

[0007] Furthermore, the first bevel gear and the second bevel gear are arranged perpendicular to each other.

[0008] Furthermore, the first gear and the second gear are both sector gears.

[0009] Furthermore, a limiting boss is provided on the valve body or the mounting seat, a cutout is provided on the second gear, the boss is located in the cutout, and the periphery of the boss can abut against two side walls of the cutout.

[0010] Furthermore, the valve core is a spherical structure, a through hole is provided on the valve core, and the upstream pipeline and the downstream pipeline are connected through the through hole.

[0011] Compared with the prior art, the quick response float valve described in the utility model has the following beneficial effects:

[0012] (1) The fast response float valve described in the utility model can adjust the response speed of the liquid level floating to the opening and closing of the valve by adjusting the length of the pull rod during implementation. The float relies on its own gravity and buoyancy to move up and down, thereby driving the first gear and the second gear to rotate to realize the opening and closing of the valve.

[0013] (2) The fast response float valve described in the utility model can adjust the speed ratio of the first bevel gear and the second bevel gear during implementation. For example, if the outer diameter of the first bevel gear is twice the outer diameter of the second bevel gear, the opening of the valve core driven by the up and down floating of the pull rod can be reduced, and the valve core is not easy to drive the first bevel gear to rotate through the second bevel gear when subjected to water pressure, so as to prevent the pressure difference in the upstream and downstream pipelines from driving the valve to open during the non-opening period.

[0014] (3) The utility model describes a fast response float valve, wherein the first gear and the second gear are both fan-shaped gears, the arc section of the fan-shaped gear is used for the first gear to drive the second gear to rotate, a limiting boss is set on the valve body or the mounting seat, a cutout is provided on the second gear, the boss is located in the cutout, the outer periphery of the boss can abut against the two side walls of the cutout, one side wall of the cutout of the second gear contacts the boss to indicate the valve is closed, and the other side wall of the cutout of the second gear contacts the boss to indicate the valve is open, so as to prevent the valve stem from driving the valve core to rotate excessively, causing the valve to open poorly. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation on the present invention. In the accompanying drawings:

[0016] Figure 1 This is a structural schematic diagram of a fast response float valve according to an embodiment of the utility model;

[0017] Figure 2 It is a front view schematic diagram of a mounting seat arranged on the valve body according to an embodiment of the utility model.

[0018] Description of reference numerals:

[0019] 1-float; 2-pull rod; 3-connecting rod; 4-first gear; 5-connecting seat; 6-second gear; 61-central axis; 7-valve; 71-valve stem; 72-valve core; 73-valve body; 74-boss; 75-through hole. DETAILED DESCRIPTION

[0020] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0021] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0023] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0024] like Figure 1-Figure 2As shown, a fast response float valve comprises a float 1, a pull rod 2, a connecting rod 3, a transmission tooth and a connecting seat 5, the pull rod 2 is installed on the float 1, one end of the pull rod 2 is detachably connected to the connecting rod 3, and the connecting rod 3 is rotatably connected to the connecting seat 5, the connecting seat 5 is fixedly installed on the valve 7, one end of the connecting rod 3 is fixedly provided with a first gear 4, the valve 7 is rotatably connected to the second gear 6, the first gear 4 and the second gear 6 are meshed, the float 1 can float on the liquid medium, the liquid surface of the liquid medium is used to drive the float 1 to move up and down, the float 1 that moves up and down can drive the first gear 4 to rotate relative to the connecting seat 5, the first gear 4 that rotates relatively can drive the second gear 6 to rotate, the rotating second gear 6 is used to control the opening and closing of the valve 7, and the response speed of the liquid level floating to the opening and closing of the valve 7 can be adjusted by adjusting the length of the pull rod 2 during implementation, the float 1 relies on its own gravity and buoyancy to move up and down, thereby driving the first gear 4 and the second gear 6 to rotate, and realizing the opening and closing of the valve 7.

[0025] The valve 7 includes a valve body 73, a valve stem 71 and a valve core 72. The two ends of the valve body 73 are fixedly connected to the upstream pipeline and the downstream pipeline respectively. The second gear 6 is rotatably sleeved on the valve body 73 through the central axis 61, and the connecting seat 5 is fixedly installed on the valve body 73. The valve stem 71 is arranged in the valve body 73. The valve core 72 is arranged at one end of the valve stem 71, and the first bevel gear is installed at the other end of the valve stem 71. The second bevel gear is arranged on the central axis 61. The first bevel gear is meshed with the second bevel gear. The first bevel gear and the second bevel gear are arranged perpendicular to each other to facilitate adjustment of the rotation axis direction of the second bevel gear. During implementation, the speed ratio of the first bevel gear and the second bevel gear can be adjusted. If the outer diameter of the first bevel gear is twice the outer diameter of the second bevel gear, the opening of the valve core 72 driven by the up and down floating of the pull rod 2 can be reduced, and the valve core 72 is not easy to drive the first bevel gear to rotate through the second bevel gear when subjected to water pressure, so as to prevent the pressure difference in the upstream and downstream pipelines from driving the valve 7 to open during the non-opening period.

[0026] The first gear 4 and the second gear 6 are both fan-shaped gears, and the arc section of the fan-shaped gear is used for the first gear 4 to drive the second gear 6 to rotate. A limiting boss 74 is set on the valve body 73 or the mounting seat, and a cutout is provided on the second gear 6. The boss 74 is located in the cutout, and the periphery of the boss 74 can abut against the two side walls of the cutout. When one side wall of the cutout of the second gear 6 contacts the boss 74, it is the closing position of the valve 7, and when the other side wall of the cutout of the second gear 6 contacts the boss 74, it is the opening position of the valve 7, so as to prevent the valve stem 71 from driving the valve core 72 to rotate excessively, causing the problem of poor opening and closing of the valve 7, such as Figure 2 As shown, the valve core 72 of this embodiment is a spherical structure, and a through hole 75 is provided on the valve core 72 , and the upstream pipeline and the downstream pipeline are connected through the through hole 75 .

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick response float valve, characterized in that: The invention comprises a floating ball (1), a pull rod (2), a connecting rod (3), a transmission tooth and a connecting seat (5); the pull rod (2) is installed on the floating ball (1); one end of the pull rod (2) is detachably connected to the connecting rod (3); the connecting rod (3) is rotatably connected to the connecting seat (5); the connecting seat (5) is fixedly installed on the valve (7); a first gear (4) is fixedly arranged on one end of the connecting rod (3); the valve (7) is rotatably connected to a second gear (6); the first gear (4) and the second gear (6) are meshed; the floating ball (1) can float on the liquid medium; the liquid surface of the liquid medium is used to drive the floating ball (1) to move up and down; the floating ball (1) that moves up and down can drive the first gear (4) to rotate relative to the connecting seat (5); the first gear (4) that rotates relatively can drive the second gear (6) to rotate; the rotating second gear (6) is used to control the opening and closing of the valve (7).

2. A quick response float valve according to claim 1, characterized in that: The valve (7) comprises a valve body (73), a valve stem (71) and a valve core (72); two ends of the valve body (73) are fixedly connected to an upstream pipeline and a downstream pipeline respectively; the second gear (6) is rotatably sleeved on the valve body (73) through a central shaft (61); and the connecting seat (5) is fixedly mounted on the valve body (73); a valve stem (71) is arranged in the valve body (73); a valve core (72) is arranged at one end of the valve stem (71); a first bevel gear is mounted on the other end of the valve stem (71); a second bevel gear is arranged on the central shaft (61); and the first bevel gear meshes with the second bevel gear.

3. A quick response float valve according to claim 2, characterized in that: The first helical gear and the second helical gear are arranged perpendicular to each other.

4. A quick response float valve according to claim 2, characterized in that: The first gear (4) and the second gear (6) are both sector gears.

5. A quick response float valve according to claim 2, characterized in that: A limiting boss (74) is arranged on the valve body (73) or the mounting seat, a cutout is arranged on the second gear (6), the boss (74) is located in the cutout, and the periphery of the boss (74) can abut against two side walls of the cutout.

6. A quick response float valve according to claim 2, characterized in that: The valve core (72) is a spherical structure. A through hole (75) is provided on the valve core (72). The upstream pipeline and the downstream pipeline are connected through the through hole (75).

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