Floating ball valve with water leakage prevention structure

Abstract

A floating ball valve with a water leakage prevention structure belongs to the technical field of valves and comprises a valve body with a valve, a valve core arranged at a valve port of the valve and a lever component which drives the valve core to act and is provided with a floating ball, the valve is in a circular truncated cone shape, the lever component drives the valve core to seal the valve port, and a sealing gasket is sleeved on the body portion of the valve. A through hole in the middle of the sealing gasket is in a circular truncated cone shape matched with a circular truncated cone-shaped valve, one end of the sealing gasket leans against a valve body at the root of the valve, a valve opening of the valve penetrates out of the sealing gasket, and the distance between the other end of the sealing gasket and the valve opening is set in such a way that the valve element leans against the other end of the sealing gasket while covering and sealing the valve opening to close the floating ball valve. And the valve core cannot continuously move towards the sealing gasket. Compared with the prior art, the utility model has the advantage of preventing water leakage.

Description

TECHNICAL FIELD

[0001] The utility model belongs to valve technical field, especially is the floating ball valve with the anti -leak structure. BACKGROUND

[0002] As the patent application CN200610124068.6 discloses, the existing floating ball valve, including the valve body with the valve, the valve core setting in the valve front, the lever driving the valve action, the floating ball setting in the lever end, its characterized in that setting has the seat on the valve body in the valve front, the valve core is connected with L-shaped rod, one end of L-shaped rod is rotatably connected in the seat below the valve, the fulcrum of lever is rotatably connected in the seat in front of L-shaped rod hinged point, the free end of L-shaped rod is put on the lever.

[0003] This kind of floating ball valve, in order to ensure that the valve core tightly closes the valve, the valve is circular truncated cone, first, the valve part protrudes from the valve body, so that there is enough control to install L-shaped rod outside the valve body, and under the swing drive of L-shaped rod, the valve core is driven to close the valve port in the form of coinciding with the valve axis, to avoid the angle between the valve port and the valve core and close tightly, second, the contact area between the valve core and the valve port is small, to ensure that there is enough contact pressure to close the valve port.

[0004] Because the valve core is covered on the valve port by the lever force, and the contact area between the valve core and the valve port is small, with the increase of the number of water valve switch, the soft silicone material valve core will be gradually extruded by the valve port.

[0005] People in the use process, adjust the water level, habitually lift the floating ball, in order to operate the water level adjusting structure, at this time, the force of lifting the floating ball is hard, the force transmitted to the valve core through the lever member is large, the valve core is more easily extruded by the valve port after acting on the valve port.

[0006] Due to the structure of floating ball valve, the swing of L-shaped rod will have a certain displacement swing, which leads to the fact that the notch cannot always face the valve port, when the notch is slightly offset from the valve port, a gap is easily generated between the notch and the valve port, which leads to the occurrence of water leakage. SUMMARY

[0007] The utility model discloses the invention purpose is to overcome the above one or more shortcomings, prevent the occurrence of the floating ball valve with the anti -leak structure.

[0008] The utility model discloses a floating ball valve leakproof structure is realized, including the valve body with the valve, the valve core of setting at the valve port of valve, the lever member with the floating ball of drive valve core action, the valve is round platform shape, and the lever member drive valve core will close the valve port, its particularity lies in that the valve body is connected with the sealing washer, and the middle part of the sealing washer is perforated and is the round platform shape matched with the valve of round platform shape, and one end of the sealing washer leans on the valve body of the valve root, and the valve port of the valve is out of the sealing washer, and the distance of the other end of the sealing washer to the valve port is set, and when the valve core covers and closes the valve port and closes the floating ball valve, leans on the other end of the sealing washer, makes valve core unable to continue to move to the sealing washer.

[0009] When working, with water injection into the water tank, the water level promotes, and the promoted water level drives the floating ball to float, and the lever member drives the valve core to the valve port, and when the water level reaches the set position, the valve core also covers and closes the valve port, and water cannot be injected into the water tank through the floating ball valve.

[0010] With the water level of the water tank descending (such as the water in the water tank is boiled to produce steam and is discharged, and the water level descends), the floating ball descends, and the lever member drives the valve core to leave the valve port, and the valve port opens, and water is injected into the water tank through the floating ball valve.

[0011] With water injection, water evaporation and discharge in the water tank, the water level in the water tank changes between the set water level and the low water level, and the valve core constantly moves back and forth between leaning on the valve port and leaving the valve port, and the valve core constantly collides with the valve port, and because of the buffering support of the sealing washer, the valve core stops on the other side of the sealing washer, and even if the valve core is deformed and recessed in the middle part under the action of the driving force, the valve port cannot form a deep notch in the valve core, causing leakage, and at the same time, the sealing washer also plays a sealing role, forming a seal between the sealing washer and the valve core and between the sealing washer and the valve, further ensuring that the floating ball valve will not leak.

[0012] Compared with the prior art, the utility model discloses a floating ball valve leakproof structure. ACCURACY OF DRAWINGS

[0013] Figure 1 It is the structure diagram of the utility model discloses a floating ball valve with leakproof structure;

[0014] Figure 2 It is the schematic diagram when the floating ball valve opens.

[0015] Reference numerals: 1-Valve; 101-Valve port; 2-Valve body; 201-Water pipe connector; 3-Valve core; 4-Lever component; 401-Float; 402-Horizontal L-shaped rod; 4021-Vertical rod; 4022-Horizontal rod; 4023-Protrusion; 403-Lever; 4031-Fulcrum; 5-Frame; 6-Limiting block; 7-Baffle; 8-Valve core positioning seat; 9-Valve core positioning hole; 10-Inlaid post; 11-Sealing gasket; 12-Center perforation. Detailed Implementation

[0016] The float valve with a leak-proof structure of this utility model will now be described in further detail with reference to the accompanying drawings and embodiments:

[0017] like Figure 1 As shown, the present invention discloses a float valve with a leak-proof structure, comprising a valve body 2 with a valve 1 on the right side, a valve core 3 located on the right side of the valve 1, and a lever component 4 that drives the valve core 3 to move. A water pipe connector 201 is located on the left side of the valve body 2. The valve 1 is frustum-shaped, and the water channel of the valve 1 is connected to the water channel of the water pipe connector 201. The lever component 4 drives the valve core 3 to close the valve port 101 of the valve 1. The right side of the valve body 2 at the base of the valve 1 is flat, and a frame 5 is provided on the right side of the valve body 2. The lever component 4 includes a float 401. A horizontal L-shaped rod 402 and a lever 403 connected to a float 401 at their free ends. The free end of the vertical rod 4021 of the horizontal L-shaped rod 402 is rotatably connected to a frame 5 below the valve 1. The fulcrum 4031 of the lever 403 is rotatably connected to the frame 5 on the right side of the horizontal L-shaped rod 402. The horizontal rod 4022 of the horizontal L-shaped rod 402 rests on the lever 403. A protrusion 4023 resting on the lever 403 is provided below the right end of the horizontal rod 4022 of the horizontal L-shaped rod 402. A limit stop 6 is provided on the frame 5, and a baffle 7 is provided on the right end of the frame 5. A valve core positioning seat 8 is provided on the left side of the vertical rod 4021 of the horizontal L-shaped rod 402, directly opposite the valve port 101. A valve core positioning hole 9 is provided on the left side of the valve core positioning seat 8, and an inlay post 10 is provided on the right side of the valve core 3. The inlay post 10 is inlaid into the valve core positioning hole 9, so that the valve core 3 is fixedly connected to the left side of the vertical rod 4021 of the horizontal L-shaped rod 402. The special feature is that a cylindrical sealing gasket 11 is fitted on the body of the valve 1. The material of the sealing gasket 11 is... It is silicone. The perforation 12 in the middle of the sealing gasket is in the shape of a frustum to match the frustum shape of the valve 1. One end (left end) of the sealing gasket 11 rests on the flat side of the valve body 2 at the root of the valve 1. The valve port 101 of the valve 1 extends out of the sealing gasket 11. The distance A from the other end (right end) of the sealing gasket 11 to the valve port 101 is set as follows: When the valve core 3 covers and closes the valve port 101 to close the float valve, the valve core 3 rests on the other end (right end) of the sealing gasket 11, so that the valve core 3 cannot continue to move towards the sealing gasket 11.

[0018] Preferably, the distance A from the other end (right end) of the sealing gasket 11 to the valve port 101 is 0.5-3mm.

[0019] Preferably, the distance A from the other end (right end) of the sealing gasket 11 to the valve port 101 is 1-2mm.

[0020] The small deformation is easy to restore the original shape after the deformation force is eliminated, while the large deformation (such as the notch is too deep) is not easy to restore the original shape after the deformation. When the distance A from the other end (right end) of the sealing gasket 11 to the valve port 101 is 0.5-3mm, especially 1-2mm, the sealing can be ensured, and the original shape is easy to restore after the deformation and the deformation force is eliminated.

[0021] As shown in Figure 1 , 2 , during operation, as water is injected into the water tank, the water level rises, the rising water level drives the floating ball 401 to float up, the lever member 4 drives the valve core 401 to approach the valve port 101, when the water level reaches the set position, the valve core 3 also covers and closes the valve port 101, so that water cannot be injected into the water tank through the floating ball valve;

[0022] As shown in Figure 2 , as the water level of the water tank decreases (such as the water in the water tank is boiled to produce steam and is discharged, the water level decreases), the floating ball 401 descends, the lever member 4 drives the valve core 3 to move away from the valve port 101, the valve port 101 is opened, and water is injected into the water tank through the floating ball valve;

[0023] As water is injected, water in the water tank evaporates and is discharged, the water level in the water tank fluctuates between the set water level and the low water level, the valve core 3 constantly moves back and forth between approaching the valve port 101 and moving away from the valve port 101, the valve core 3 constantly collides with the valve port 101, and due to the buffering support of the sealing gasket 11, the valve core 3 is stopped on the other side of the sealing gasket 11, even if the valve core 3 is deformed and recessed in the middle part under the action of the driving force (as shown in Figure 1 ), the valve port 101 cannot form a deep notch in the valve core 3, causing leakage, on the contrary, due to the small deformation, the original shape is easy to restore (as shown in Figure 2 ), so that leakage will not occur, at the same time, the sealing gasket 11 also plays a sealing role, forming a seal between the sealing gasket 11 and the valve core 3 and between the sealing gasket 11 and the valve 1, further ensuring that the floating ball valve will not leak.

Claims

1. A float valve having a water leakage preventing structure, comprising a valve body having a valve, a valve core provided at a valve port of the valve, and a lever member having a float ball to actuate the valve core, the valve being in a circular truncated cone shape, the lever member driving the valve core to close the valve port, characterized in that, The valve body is sleeved with a sealing gasket, the middle part of the sealing gasket is perforated in a circular truncated cone shape matching the circular truncated cone shape of the valve, one end of the sealing gasket is located on the valve body at the root of the valve, the valve port of the valve penetrates out of the sealing gasket, and the distance from the other end of the sealing gasket to the valve port is set such that when the valve core covers and closes the valve port to close the float ball valve, the valve core cannot continue to move to the sealing gasket by abutting against the other end of the sealing gasket. ​ 2. The float valve having a water leakage preventing structure according to claim 1, characterized by The distance from the other end of the sealing gasket to the valve port is 0.5-3 mm.

3. The float valve having a water leakage preventing structure according to claim 2, characterized by, The distance from the other end of the sealing gasket to the valve port is 1-2 mm.

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