Floating ball type liquid level control valve

Abstract

The utility model relates to the technical field of liquid level control valves, in particular to a floating ball type liquid level control valve. The floating ball type liquid level control valve solves the technical problem that in the prior art, a floating ball type liquid level control valve is prone to misoperation. A floating ball type liquid level control valve comprises a valve body assembly, the valve body assembly is provided with a valve rod for controlling the valve body assembly to be opened or closed, and the valve rod is connected to the valve body assembly in a sliding mode; at least three floating balls are arranged on the frame body, when the liquid level heights are inconsistent, different floating balls are located at different heights, at the moment, the whole frame body inclines and does not drive the driving frame to move, and only when the at least three floating balls float upwards at the same time, the frame body drives the valve rod to move through the driving frame; therefore, the floating ball type liquid control valve has higher precision, and the floating ball type liquid level control valve is not prone to malfunction.

Description

TECHNICAL FIELD

[0001] The utility model relates to liquid level control valve technical field especially relates to a kind of float ball type liquid level control valve. BACKGROUND

[0002] Liquid water level control valve has the function of automatically opening and closing pipeline to control water level, suitable for various water tower automatic water supply systems in industrial and mining enterprises, civil buildings, and can be used as atmospheric pressure boiler circulating water control valve, valve small, easy to install, usually using float ball to detect water level, and using float ball to control the opening or closing of valve body.

[0003] Liquid level control valve needs to be pushed by the buoyancy generated by float ball to make valve core close or open, to realize the control of liquid level, the float ball type control valve in prior art usually adopts single float ball structure, in actual application process, single float ball structure can only detect the water level of one position of liquid surface, causing control valve to be prone to misoperation.

[0004] Therefore, the float ball type liquid level control valve in prior art has the technical problem of being prone to misoperation. SUMMARY

[0005] The float ball type liquid level control valve provided by the utility model solves the technical problem of float ball type liquid level control valve in prior art being prone to misoperation.

[0006] Some embodiments to solve the above technical problems include:

[0007] A float ball type liquid level control valve, comprising a valve body assembly, the valve body assembly is provided with a valve rod for controlling the opening or closing of the valve body assembly, the valve rod is slidingly connected to the valve body assembly;

[0008] The valve body assembly is further provided with a driving assembly for driving the displacement of the valve rod, the driving assembly is slidingly connected to the valve body assembly, and the valve rod is fixedly connected to the driving assembly;

[0009] The driving assembly comprises a driving frame slidingly connected to the valve body assembly, the driving frame is provided with a frame body, the frame is provided with a float ball, the frame body is provided in the driving frame through a spherical body, and the driving frame is provided with a spherical groove matched with the spherical body;

[0010] The float ball is at least three, and the at least three float balls are distributed at different positions of liquid surface.

[0011] As preferred, the frame body comprises a center seat, the spherical body is arranged in the center seat, the spherical body is greater than 1 / 2 volume located in the spherical groove, the center seat is provided with a connecting rod, and the float ball is mounted on the connecting rod.

[0012] As preferred, each of the connecting rods is provided with an independent floating ball, and the connecting rods are evenly arranged along the periphery of the central seat.

[0013] As preferred, the cross-sectional shape of the connecting rods is polygonal, and the connecting rods and the central seat are of an integral structure, and the spherical body and the central seat are of an integral structure.

[0014] As preferred, the floating balls are fixed to the connecting rods by screws, and the distances from all the floating balls to the central seat are equal.

[0015] As preferred, the valve body assembly is provided with guide columns, the driving frame is provided with guide holes matched with the guide columns, the guide columns are at least two, the guide columns are arranged in parallel with the valve rod, and each of the guide columns is matched with an independent guide hole.

[0016] As preferred, the cross-sectional shape of the guide columns is polygonal.

[0017] As preferred, the valve rod is fixed to the driving frame by threads, the valve rod is provided with external threads, the driving frame is provided with screw holes matched with the external threads of the valve rod, and the valve rod is further provided with a lock nut.

[0018] As preferred, the driving frame is provided with a connecting column, the upper end of the connecting column is provided with a connecting body, and the spherical groove is arranged on the connecting body.

[0019] As preferred, the connecting body and the connecting column are of an integral structure, and the connecting column and the driving frame are of an integral structure.

[0020] Compared with the prior art, the utility model has the following advantages:

[0021] By arranging at least three floating balls on the frame body, arranging the frame body on the driving frame through the spherical body, and arranging the spherical groove matched with the spherical body on the driving frame, the liquid level at different positions is detected by the at least three floating balls, the different floating balls are at different heights when the liquid level is inconsistent, at this time, the frame body as a whole is inclined and does not drive the driving frame to move, only when the at least three floating balls float up at the same time, the frame body drives the valve rod to displace through the driving frame, so that the floating ball type liquid control valve has higher precision, and the floating ball type liquid level control valve is not prone to malfunction.

[0022] The frame body is connected with the driving frame through the spherical body and the spherical groove, the frame body can be inclined or swung around the ball center of the spherical body relative to the driving frame, so that the frame body can adapt to the force applied by the floating balls at different positions, and then the floating force generated by the floating balls will not all act on the driving frame even if the frame body is inclined, so that the driving frame is not prone to damage in the long-term use.

[0023] The driving frame is slidably connected to the valve body assembly, the driving frame is fixedly connected with the valve rod, in use, the valve rod does not need to bear large force, the valve rod is not easy to bend in long-term use, and the valve body assembly is not easy to be damaged. BRIEF DESCRIPTION OF DRAWINGS

[0024] For purposes of explanation, several embodiments of the present inventive technology are set forth in the accompanying figures. The figures are incorporated into this text and constitute a part of the detailed description. In some instances, well-known structures and devices are shown in block diagram form in order to avoid obscuring the conceptual presentation of embodiments of the present inventive subject matter.

[0025] Fig. 1 is a schematic view of the present invention.

[0026] Fig. 2 is an exploded view of the present invention from a first angle.

[0027] Fig. 3 is an exploded view of the present invention from a second angle.

[0028] Fig. 4 is a schematic view of the driving frame from a first angle.

[0029] Fig. 5 is a schematic view of the driving frame from a second angle.

[0030] In the drawings:

[0031] 1, valve body assembly, 11, valve rod, 12, lock nut.

[0032] 2, driving assembly, 21, driving frame, 211, spherical groove, 212, guide hole, 213, connecting column, 214, connecting body, 22, frame body, 221, floating ball, 222, spherical body, 223, center seat, 224, connecting rod, 23, guide column. DETAILED DESCRIPTION

[0033] The specific embodiments shown below are intended to serve as a description of the various configurations of the present inventive subject matter and are not intended to represent the only configurations in which the present inventive subject matter can be practiced. The specific embodiments include specific details for the purposes of providing a thorough understanding of the present inventive subject matter. However, it will be apparent to those skilled in the art that the present inventive subject matter can be practiced without

[0034] It can be understood that, in this text, relational terms such as "first" and "second" and the like are intended to distinguish one entity or operation from another entity or operation, and are not intended to imply any actual relationship or sequence between these entities or operations.

[0035] The terms "comprise", "comprising", or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus. An element proceeded by "comprises... a" does not, without more constraints, exclude the presence of additional identical elements in the process, method, article, or apparatus that comprises the element.

[0036] Referring to Figs. 1 to 5 As shown in the drawings, a float ball type liquid level control valve comprises a valve body assembly 1, which is provided with a valve rod 11 for controlling the opening or closing of the valve body assembly 1, the valve rod 11 being slidingly connected to the valve body assembly 1;

[0037] The valve body assembly 1 is further provided with a driving assembly 2 for driving the displacement of the valve rod 11, the driving assembly 2 being slidingly connected to the valve body assembly 1, and the valve rod 11 being fixedly connected to the driving assembly 2;

[0038] The driving assembly 2 comprises a driving frame 21 slidingly connected to the valve body assembly 1, the driving frame 21 being provided with a frame body 22, the frame body 22 being provided with float balls 221, the frame body 22 being arranged on the driving frame 21 through a spherical body 222, and the driving frame 21 being provided with a spherical groove 211 cooperating with the spherical body 222;

[0039] The float balls 221 are at least three, and the at least three float balls 221 are distributed at different positions of the liquid surface.

[0040] The valve body assembly 1 is a common control valve. The valve rod 11 reciprocates along a straight line to open or close the control valve.

[0041] The float balls 221 are common spherical floating bodies, which are used to provide buoyancy for the driving frame 21 when the liquid surface rises, so that the driving frame 21 can pull the valve rod 11 to move upward to open or close the valve body assembly 1.

[0042] In some embodiments, the spherical body 222 and the spherical groove 211 cooperate to form a universal joint structure, that is, the frame body 22 can be inclined or swung relative to the driving frame 21, and when the frame body 22 is inclined or swung, it is inclined or swung around the ball center of the spherical body 222. The design of the spherical body 222 and the spherical groove 211 allows the frame body 22 to be inclined in any direction relative to the driving frame 21.

[0043] Referring to Figs. 1 to 5As shown, in some embodiments, when the liquid level is in a non-stationary state, the liquid level at different positions can have different heights, at this time, part of the floating ball 221 moves upward, part of the floating ball 221 moves downward, and the frame 22 is tilted. Since the frame 22 can be tilted relative to the driving frame 21, the frame 22 will not move the driving frame 21 when it is tilted, thereby preventing the valve stem 11 from being misoperated.

[0044] In some embodiments, the spherical body 222 and the spherical groove 211 can be assembled by a hot assembly method, or the structure forming the spherical groove 211 can be a split structure to facilitate the assembly of the spherical body 222 and the spherical groove 211.

[0045] In some embodiments, the frame 22 includes a center seat 223, the spherical body 222 is arranged on the center seat 223, the spherical body 222 is greater than 1 / 2 of the volume located in the spherical groove 211, the center seat 223 is provided with a connecting rod 224, and the floating ball 221 is mounted on the connecting rod 224. The arrangement of the connecting rod 224 allows the floating ball 221 to be arranged away from the position of the spherical body 222, so that the height of the liquid level at different positions can be detected in a larger range, thereby further improving the accuracy of the floating ball type liquid level control valve.

[0046] In some embodiments, each connecting rod 224 is provided with an independent floating ball 221, and the connecting rods 224 are uniformly arranged around the center seat 223.

[0047] In some embodiments, the cross-sectional shape of the connecting rod 224 is polygonal, the connecting rod 224 and the center seat 223 are an integral structure, and the spherical body 222 and the center seat 223 are an integral structure.

[0048] The cross section of the connecting rod 224 is polygonal, the connecting rod 224 has higher bending strength, and is not easy to bend during long-term use, thereby improving the accuracy of the floating ball type liquid level control valve.

[0049] Referring to Figs. 1 to 5 As shown, in some embodiments, the floating ball 221 is fixed to the connecting rod 224 by a screw, and the distance from all the floating balls 221 to the center seat 223 is equal.

[0050] In some embodiments, the valve body assembly 1 is provided with a guide column 23, the driving frame 21 is provided with a guide hole 212 matched with the guide column 23, the guide column 23 is at least two, the guide column 23 is arranged in parallel with the valve stem 11, and each guide column 23 is matched with an independent guide hole 212.

[0051] The cross-sectional shape of the guide column 23 is polygonal.

[0052] In some embodiments, the guide column 23 can be welded to the valve body assembly 1, or the guide column 23 can also be fixed to the valve body assembly 1 by screwing.

[0053] In some embodiments, the valve stem 11 is fixed to the driving frame 21 by screwing, the valve stem 11 is provided with external threads, the driving frame 21 is provided with screw holes matched with the external threads of the valve stem 11, and the valve stem 11 is further provided with a lock nut 12.

[0054] The lock nut 12 is in contact with the driving frame 21, the valve stem 11 is prevented from loosening by using the principle of double nut abutting, the connection strength of the valve stem 11 and the driving frame 21 is improved, and the valve stem 11 is not prone to dislocation relative to the driving frame 21.

[0055] In some embodiments, the driving frame 21 is provided with a connecting column 213, the upper end of the connecting column 213 is provided with a connecting body 214, and the spherical groove 211 is arranged on the connecting body 214.

[0056] The connecting body 214 and the connecting column 213 are in an integral structure, and the connecting column 213 and the driving frame 21 are in an integral structure.

[0057] Grease can be coated between the spherical body 222 and the spherical groove 211.

[0058] The above introduces the subject technical scheme of the utility model and corresponding details, and it can be understood that the above introduction is only some implementation of the subject technical scheme of the utility model, and some details can be omitted in specific implementation.

[0059] In addition, in some implementation of the utility model, a plurality of implementation schemes can be combined, and various combination schemes are not listed one by one due to the length. Those skilled in the art can freely combine the above implementation schemes according to the needs in specific implementation to obtain better application experience.

[0060] Those skilled in the art can obtain other detailed configurations or drawings according to the subject technical scheme of the utility model and the drawings in the implementation of the subject technical scheme of the utility model, and obviously, these details still belong to the range covered by the subject technical scheme of the utility model without departing from the subject technical scheme of the utility model.

Claims

1. A float operated liquid level control valve characterized by: The utility model provides a valve body assembly (1) is provided with the valve stem (11) of control valve body assembly (1) open or close, the valve stem (11) is connected in sliding to valve body assembly (1), valve body assembly (1) is further provided with the drive assembly (2) of drive valve stem (11) displacement, drive assembly (2) is connected in sliding to valve body assembly (1), and valve stem (11) is fixedly connected with drive assembly (2), drive assembly (2) includes the drive frame (21) of sliding connection to valve body assembly (1), drive frame (21) is provided with frame body (22), the frame is provided with float ball (221), frame body (22) is set up in drive frame (21) through spherical body (222), drive frame (21) is provided with the spherical groove (211) with spherical body (222) cooperation, float ball (221) at least three, at least three float ball (221) is distributed in the different position of liquid surface.

2. The float level control valve of claim 1, wherein: The frame body (22) includes a center seat (223), the spherical body (222) is arranged on the center seat (223), the spherical body (222) is greater than 1 / 2 volume in the spherical groove (211), the center seat (223) is provided with a connecting rod (224), and the float ball (221) is installed on the connecting rod (224).

3. The float-controlled level valve of claim 2, wherein: Each connecting rod (224) is provided with an independent float ball (221), and the connecting rods (224) are uniformly arranged around the center seat (223).

4. The float-controlled level valve of claim 3, wherein: The cross-sectional shape of the connecting rod (224) is polygonal, the connecting rod (224) and the center seat (223) are of an integral structure, and the spherical body (222) and the center seat (223) are of an integral structure.

5. The float-controlled level valve of claim 4, wherein: The float ball (221) is fixed to the connecting rod (224) by a screw, and the distances from all the float balls (221) to the center seat (223) are equal.

6. The float-controlled level valve of claim 1, wherein: The valve body assembly (1) is provided with a guide column (23), the drive frame (21) is provided with a guide hole (212) matched with the guide column (23), the guide column (23) is at least two, the guide column (23) is arranged in parallel with the valve stem (11), and each guide column (23) is matched with an independent guide hole (212).

7. The float operated liquid level control valve according to claim 6, characterized in that: The cross-sectional shape of the guide column (23) is polygonal.

8. The float-controlled level valve of claim 1, wherein: The valve stem (11) is fixed to the drive frame (21) by a thread, the valve stem (11) is provided with an external thread, the drive frame (21) is provided with a screw hole matched with the external thread of the valve stem (11), and the valve stem (11) is further provided with a lock nut (12).

9. The float-controlled level valve of claim 1, wherein: The drive frame (21) is provided with a connecting column (213), the upper end of the connecting column (213) is provided with a connecting body (214), and the spherical groove (211) is arranged on the connecting body (214).

10. The float operated liquid level control valve according to claim 9, characterized in that: The connecting body (214) and the connecting column (213) are of an integral structure, and the connecting column (213) and the drive frame (21) are of an integral structure.

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