Floating ball valve

Abstract

The utility model relates to the technical field of water flow control, in particular to a floating ball valve. A floating ball valve comprises a floating ball and a valve seat which are connected through a connecting rod, a valve element capable of moving up and down in the valve seat is arranged in the valve seat, a water inlet is formed in one side of the valve seat, a first limiting hole is formed in the other side of the valve seat, a water outlet is formed in the bottom of the valve seat, and a second limiting hole is formed in the valve element. The top end of the connecting rod penetrates through the first limiting hole and then is inserted into the second limiting hole, and the connecting rod swings to drive the valve element to move upwards so as to open the floating ball valve or drive the valve element to move downwards so as to close the floating ball valve. The connecting rod is designed to be of a two-end type, so that the height of the preset liquid level can be adjusted after the floating ball valve is installed, and the operation is convenient and fast. Meanwhile, due to the structural design of the valve seat and the valve element, under the condition that the function of the floating ball valve is not changed, the overall structure of the floating ball valve is simplified as much as possible, the installation size needed by the floating ball valve is greatly reduced, and the production cost is also reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of water flow control, in particular to a float valve. Background Art

[0002] A float valve is a valve composed of components such as a bent arm and a float ball, which can be used to automatically control the liquid level of a water tower or a water tank. It has the characteristics of simple maintenance, flexibility and durability, high accuracy of liquid level control, the water level is not interfered by water pressure, and the opening and closing are tight without leakage.

[0003] The float valve adjusts the liquid supply volume by controlling the liquid level. The flooded evaporator requires the liquid level to be maintained at a certain height, and generally a float expansion valve is suitable. The working principle of the float valve is that the float ball in the float chamber is lowered and raised by the action of the liquid level to control the opening or closing of a valve. The float chamber is placed on one side of the flooded evaporator and is connected to the evaporator by balance pipes up and down, so the liquid levels of the two are the same. When the liquid level in the evaporator drops, the liquid level in the float chamber also drops, so the float ball drops, and the valve opening degree is increased by the lever action to increase the liquid supply volume. Vice versa.

[0004] The float valve in the prior art, such as the technical content disclosed in Chinese Patent CN108468857B: includes a valve body with a valve core and a float drive part for driving the valve core to act. The valve core is located at the water inlet end of the valve orifice of the valve body and is connected to the float drive part through a lever connected to the valve core. The special feature is that the float drive part includes a swing rod and a float ball connected to the swing rod. The swing rod is hinged on the valve body. There are two movable connection hinge points on the valve body. The rotation axis of one movable connection hinge point is perpendicular to the central axis of the valve core, and the rotation axis of the other movable connection hinge point is parallel to the central axis of the valve core. A fixed shaft with a limiting structure at the end is arranged on the movable connection hinge point. A shaft hole is arranged on the swing rod corresponding to the fixed shaft. The shaft hole is rotatably sleeved on the fixed shaft and the swing rod is restricted from slipping off the fixed shaft by the limiting structure; or, a fixed shaft hole is arranged on the movable connection hinge point, and a rotating shaft with a limiting structure at the end is arranged on the swing rod corresponding to the fixed shaft hole. The rotating shaft is rotatably inserted through the fixed shaft hole and is restricted from slipping off the fixed shaft hole by the limiting structure. Two pressing surfaces are arranged on the swing rod corresponding to the lever. The pressing directions of the two pressing surfaces are perpendicular to each other.

[0005] Although the above prior art has the advantages of being able to adapt to narrow spaces and can be installed on the water inlet with water inlet directions including front-back, left-right, and up-down, and is convenient to use, its float valve structure is relatively complex, and at the same time, the connecting rod is a straight rod, and the liquid level height to be controlled cannot be adjusted after the float valve is installed. Summary of the Utility Model

[0006] In order to overcome the deficiencies of the prior art, the utility model provides a float valve ball with a simple structure and capable of adjusting the liquid level height to be controlled after installation. To solve the above technical problems, the utility model provides the following technical solutions:

[0007] A float valve ball includes a float ball and a valve seat connected by a connecting rod. A valve core that can move up and down within the valve seat is provided inside the valve seat. An inlet is provided on one side of the valve seat, and a first limiting hole is provided on the other side of the valve seat. An outlet is provided at the bottom of the valve seat. A second limiting hole is provided in the valve core. The top end of the connecting rod passes through the first limiting hole and is inserted into the second limiting hole. The connecting rod drives the valve core to move up to open the float valve ball or drives the valve core to move down to close the float valve ball through swinging.

[0008] On the basis of adopting the above technical solutions, the utility model can also adopt the following further technical solutions:

[0009] The tail end of the connecting rod is fixedly connected to the float ball, and the connecting rod is a straight rod.

[0010] The tail end of the connecting rod is fixedly connected to the float ball. The connecting rod includes a first connecting rod and a second connecting rod that are hinged to each other. An adjusting bolt is provided at the hinge joint of the first connecting rod and the second connecting rod. By loosening the adjusting bolt, the included angle between the first connecting rod and the second connecting rod is changed, and by tightening the adjusting bolt, the first connecting rod and the second connecting rod are fixed.

[0011] A lower cover is further covered on the lower part of the valve seat, and a through hole is provided in the lower cover to form an outlet.

[0012] An inner cylinder is provided inside the valve seat. A buffer frame is provided at the top of the inner cylinder. The bottom of the inner cylinder is open, and the valve core is arranged inside the inner cylinder.

[0013] An annular cavity is formed between the valve seat and the inner cylinder. The inlet on the side of the valve seat is communicated with the annular cavity. The first limiting hole penetrates from the outer side wall of the valve seat to the inner side wall of the inner cylinder, and a pedestal is formed at the annular cavity for the first limiting hole.

[0014] A limiting step protruding outward is provided at the bottom of the valve core, and a flat sealing ring is provided at the bottom of the lower cover. When the float valve ball is in the closed state, the valve core and the sealing ring are pressed against each other to form a seal.

[0015] A buffer hole is provided above the second limiting hole of the valve core, and the hole wall of the second limiting hole and the hole wall of the buffer hole form an H-shaped structure.

[0016] Reinforcing sheets are provided on both sides of the hole wall of the second limiting hole, and a notch is provided on one of the reinforcing sheets.

[0017] A groove is provided in the valve core, and a sealing ring is provided in the groove.

[0018] Compared with the prior art, the beneficial effects that the utility model can achieve are as follows:

[0019] The utility model realizes the adjustment of the preset liquid level height after the installation of the float valve by designing the connecting rod into a two - end type, which is convenient and fast to operate. At the same time, the structural design of the valve seat and the valve core simplifies the overall structure of the float valve as much as possible while ensuring the unchanged function of the float valve, greatly reducing the installation volume required for the float valve and also reducing the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 FIG. 1 is a schematic structural diagram of the first embodiment of a float valve of the utility model.

[0021] Figure 2 FIG. 2 is a cross - sectional view of the first embodiment of a float valve of the utility model.

[0022] Figure 3 FIG. 3 is a schematic structural diagram of the valve seat of a float valve of the utility model.

[0023] Figure 4 FIG. 4 is a schematic internal structure diagram of the valve seat of a float valve of the utility model Figure 1 .

[0024] Figure 5 FIG. 5 is a schematic internal structure diagram of the valve seat of a float valve of the utility model Figure 2 .

[0025] Figure 6 FIG. 6 is a schematic structural diagram of the valve core of a float valve of the utility model.

[0026] Figure 7 FIG. 7 is a schematic structural diagram of the second embodiment of a float valve of the utility model.

[0027] Figure 8 FIG. 8 is a cross - sectional view of the second embodiment of a float valve of the utility model.

[0028] Wherein, the connecting rod 1, the first connecting rod 11, the second connecting rod 12, the adjusting bolt 13, the float ball 2, the valve seat 3, the water inlet 31, the first limiting hole 32, the inner cylinder 33, the buffer frame 34, the annular cavity 35, the pedestal 36, the valve core 4, the second limiting hole 41, the limiting step 42, the buffer hole 43, the reinforcing piece 44, the notch 45, the groove 46, the lower cover 5, the through hole 51. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0029] In combination with the drawings, a float valve provided by the utility model is further described.

[0030] Embodiment 1, as Figures 1-6 shown, a float valve includes a float ball 2 and a valve seat 3 connected by a connecting rod 1.

[0031] Further, the tail end of the connecting rod 1 is fixedly connected to the floating ball 2. The connecting rod 1 includes a first connecting rod 11 and a second connecting rod 12 that are hinged to each other. An adjusting bolt 13 is provided at the hinge joint of the first connecting rod 11 and the second connecting rod 12. By loosening the adjusting bolt 13, the included angle between the first connecting rod 11 and the second connecting rod 12 can be changed, and by tightening the adjusting bolt 13, the first connecting rod 11 and the second connecting rod 12 can be fixed.

[0032] Further, a valve core 4 that can move up and down in the valve seat 3 is provided in the valve seat 3. A water inlet 31 is opened on one side of the valve seat 3, a first limiting hole 32 is opened on the other side of the valve seat 3, and a water outlet is provided at the bottom of the valve seat 3.

[0033] Further, an inner cylinder 33 is provided inside the valve seat 3. A buffer bracket 34 is provided at the top of the inner cylinder 33. The bottom of the inner cylinder 33 is open for the valve core 4 to be inserted into the inner cylinder 33.

[0034] Further, an annular cavity 35 is formed between the valve seat 3 and the inner cylinder 33. The water inlet 31 on the side of the valve seat 3 is in communication with the annular cavity 35. The first limiting hole 32 penetrates from the outer wall of the valve seat 3 to the inner wall of the inner cylinder 33, and a pedestal 36 is formed at the annular cavity 35 for the first limiting hole 32.

[0035] Further, a second limiting hole 41 is opened on the valve core 4. The top end of the connecting rod 1 passes through the first limiting hole 32 and is inserted into the second limiting hole 41. The connecting rod 1 drives the valve core 4 to move up to open the float valve or drives the valve core 4 to move down to close the float valve by swinging.

[0036] Further, a convex limiting step 42 is provided at the bottom of the valve core 4.

[0037] Further, a buffer hole 43 is provided above the second limiting hole 41 of the valve core 4. The hole wall of the second limiting hole 41 and the hole wall of the buffer hole 43 form an H-shaped structure.

[0038] Further, reinforcing sheets 44 are provided on both sides of the hole wall of the second limiting hole 41, and a notch 45 is opened on one of the reinforcing sheets 44.

[0039] Further, a groove 46 is opened on the valve core 4, and a sealing ring is provided in the groove 46.

[0040] Further, a lower cover 5 is also covered on the lower part of the valve seat 3. A through hole 51 is opened on the lower cover 5 to form a water outlet.

[0041] Further, a flat sealing ring is provided at the bottom of the lower cover 5. When the float valve is in the closed state, the valve core 4 and the sealing ring are pressed against each other to form a seal.

[0042] Example 2, as Figures 7-8As shown, the tail end of the connecting rod 1 is fixedly connected to the floating ball 2, and the connecting rod 1 is a straight rod. The rest is the same as in the first embodiment.

[0043] The present utility model has been illustrated and described with reference to the preferred embodiments. However, those of ordinary skill in the art should understand that various changes in form and detail may be made within the scope of the claims.

Claims

1. A float valve, comprising a float and a valve seat connected by a connecting rod, characterized in that The valve seat is provided with a valve core that can move up and down in the valve seat, a water inlet is provided on one side of the valve seat, and a first limiting hole is provided on the other side of the valve seat, a water outlet is provided at the bottom of the valve seat, and a second limiting hole is provided on the valve core. The top end of the connecting rod passes through the first limiting hole and is inserted into the second limiting hole. The connecting rod swings to drive the valve core to move upward to open the float valve or drives the valve core to move downward to close the float valve.

2. A float valve according to claim 1, characterized in that The tail end of the connecting rod is fixedly connected to the floating ball, and the connecting rod is a straight rod.

3. A float valve according to claim 1, characterized in that The tail end of the connecting rod is fixedly connected to the float, and the connecting rod includes a first connecting rod and a second connecting rod hinged to each other. An adjusting bolt is provided at the hinge of the first connecting rod and the second connecting rod. The angle between the first connecting rod and the second connecting rod is changed by loosening the adjusting bolt, and the first connecting rod and the second connecting rod are fixed by tightening the adjusting bolt.

4. A float valve according to claim 1, characterized in that The lower part of the valve seat is also covered with a lower cover, and the lower cover is provided with a through hole to form a water outlet.

5. A float valve according to claim 1, characterized in that An inner cylinder is arranged inside the valve seat, a buffer frame is arranged on the top of the inner cylinder, the bottom of the inner cylinder is open, and the valve core is arranged in the inner cylinder.

6. A float valve according to claim 5, characterized in that An annular cavity is formed between the valve seat and the inner tube, the water inlet on the side of the valve seat is connected to the annular cavity, the first limiting hole passes through the outer wall of the valve seat to the inner wall of the inner tube, and the first limiting hole forms a pedestal in the annular cavity.

7. A float valve according to claim 4, characterized in that The bottom of the valve core is provided with an outwardly protruding limiting step, and the bottom of the lower cover is provided with a flat sealing ring. When the float valve is in a closed state, the valve core and the sealing ring are pressed against each other to form a seal.

8. A float valve according to claim 1, characterized in that A buffer hole is provided above the second limiting hole of the valve core, and the hole wall of the second limiting hole and the hole wall of the buffer hole form an H-shaped structure.

9. A float valve according to claim 8, characterized in that Reinforcement sheets are provided on both sides of the hole wall of the second limiting hole, and a notch is provided on one of the reinforcement sheets.

10. A float valve according to claim 1, characterized in that The valve core is provided with a groove, and a sealing ring is arranged in the groove.

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