Leakage-proof sealing structure for truncated cone-shaped floating ball valve

Abstract

The utility model relates to a sealing technology of a valve, in particular to a water-leakage-proof sealing structure for a circular-truncated-cone-shaped floating ball valve, which comprises a cylindrical sealing gasket main body and a circular-truncated-cone-shaped through hole arranged in the middle of the cylindrical sealing gasket main body. Compared with the prior art, the floating ball valve has the advantage of preventing water leakage of the circular-truncated-cone-shaped valve and the floating ball valve.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of sealing technology of valve, in particular to the water leakage prevention sealing structure for round table shape valve ball float valve. BACKGROUND

[0002] As disclosed in patent application CN200610124068.6, the existing ball float valve, including the valve body with valve, the valve core arranged in front of the valve, the lever driving the valve to act, the float ball arranged at the end of the lever, characterized in that the valve body in front of the valve is provided with a seat, the valve core is connected with L-shaped rod, one end of the L-shaped rod is rotatably connected with the seat below the valve, the fulcrum of the lever is rotatably connected with the seat in front of the L-shaped rod joint point, and the free end of the L-shaped rod is placed on the lever.

[0003] This kind of ball float valve, in order to ensure that the valve core tightly closes the valve, the valve is round table shape, first, the valve part protrudes outside 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 drives the valve port to close in the form of coinciding with the valve axis, to avoid the valve port and the valve core between the angle and close tightly;Secondly, 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 relying on 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, when adjusting water level, it is a habit to lift the float ball, so as to operate the water level adjusting structure, at this time, the force of lifting the float ball is hard, the force transmitted to the valve core through the lever member is large, and the valve core is more easily extruded by the valve port.

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

[0007] The utility model discloses the invention purpose is to overcome the above-mentioned one or more shortcomings, the water leakage prevention sealing structure for round table shape valve ball float valve can prevent the occurrence of water leakage of round table shape valve ball float valve.

[0008] The water leakage prevention sealing structure for round table shape valve ball float valve of the utility model is realized as follows: including cylindrical sealing gasket main body, round table shape perforation arranged in the middle of cylindrical sealing gasket main body.

[0009] Due to the existing float ball valve, its structure comprises a valve body with a valve, a valve core arranged at a valve port of the valve, a lever member with a float ball driving the valve core to act, the valve is circular truncated cone, the lever member drives the valve core to close the valve port;

[0010] In use, the sealing gasket is sleeved on the circular truncated cone valve, one end of the sealing gasket is arranged on the valve body at the root of the circular truncated cone valve, since the middle part of the cylindrical sealing gasket body is a circular truncated cone perforation, therefore, the sealing gasket can be tightly clamped on the circular truncated cone valve;

[0011] In use, as water is injected into the water tank, the water level rises, the rising water level drives the float ball to float up, the lever member drives the valve core to the valve port of the circular truncated cone valve, when the water level reaches the set position, the valve core covers and closes the valve port, and water cannot be injected into the water tank through the float ball valve;

[0012] As the water level in the water tank decreases (for example, the water in the water tank is boiled to produce steam and is discharged, and the water level decreases), the float ball decreases, the lever member drives the valve core to leave the valve port, the valve port is opened, and water is injected into the water tank through the float ball valve;

[0013] As water is injected, water in the water tank evaporates and is discharged, the water level in the water tank changes between the set water level and the low water level, the valve core continuously moves back and forth between being arranged on the valve port and leaving the valve port, the valve core continuously collides with the valve port, due to the buffering support of the sealing gasket, the valve core is stopped on the other side of the sealing gasket, even if the valve core is deformed and recessed at the middle part under the action of the driving force, the valve port cannot form a deep notch in the valve core, and leakage is caused, meanwhile, the sealing gasket also plays a sealing role, sealing is formed between the sealing gasket and the valve core and between the sealing gasket and the circular truncated cone valve, and it is further ensured that the float ball valve will not leak.

[0014] Preferably, the circular truncated cone perforation shape of the middle part of the cylindrical sealing gasket body is matched with the circular truncated cone valve of the float ball valve, when the sealing gasket is sleeved on the circular truncated cone valve of the float ball valve, the sealing gasket can be tightly clamped on the circular truncated cone valve of the float ball valve to form a sealed connection.

[0015] Preferably, the thickness of the cylindrical sealing gasket body is set as follows, when one end of the sealing gasket is arranged on the valve body at the root of the valve, the valve port of the circular truncated cone valve of the float ball valve penetrates out of the cylindrical sealing gasket body, the distance from the other end of the cylindrical sealing gasket body to the valve port is such that, when the valve core covers and closes the valve port to close the float ball valve, the valve core is arranged on the other end of the cylindrical sealing gasket body, so that the valve core cannot continuously move to the cylindrical sealing gasket body.

[0016] Compared with the prior art, the utility model has the advantages that the float ball valve of the circular truncated cone valve can prevent water leakage. DRAWINGS

[0017] Figure 1 It is a structure schematic view of the water leakage prevention sealing structure of the round-truncated-cone valve floating ball valve of the utility model;

[0018] Figure 2 It is a schematic view when the round-truncated-cone valve floating ball valve of the utility model is closed;

[0019] Figure 3 It is a schematic view when the round-truncated-cone valve floating ball valve of the utility model is opened.

[0020] The figure caption is explained: A-sealing gasket; B-distance; 1-cylindrical sealing gasket main body; 2-round-truncated-cone perforation; 3-floating ball valve; 4-round-truncated-cone valve; 401-valve port; 5-valve body; 6-valve core; 7-floating ball; 8-lever component. Specific implementation

[0021] The round-truncated-cone valve floating ball valve of the utility model is further described in detail in combination with the drawings and embodiments:

[0022] As shown in the drawings, Figure 1 The round-truncated-cone valve floating ball valve of the utility model comprises a cylindrical sealing gasket main body 1 of silica gel material and a round-truncated-cone perforation 2 arranged in the middle of the cylindrical sealing gasket main body 1.

[0023] The shape of the cylindrical sealing gasket main body 1 is one of a cylinder, a round-truncated cone, an ellipse, a square body, a rectangular body and a trapezoidal body.

[0024] Preferably, the shape of the round-truncated-cone perforation 2 in the middle of the cylindrical sealing gasket main body 1 matches the round-truncated-cone valve 4 of the floating ball valve 3, and when the sealing gasket A is sleeved on the round-truncated-cone valve 4 of the floating ball valve 3, it can be tightly clamped on the round-truncated-cone valve 4 of the floating ball valve 3 to form a sealing connection.

[0025] Preferably, the thickness of the cylindrical sealing gasket main body 1 is set as follows: when one end of the sealing gasket A is arranged on the valve body 5 at the root of the valve 4, the valve port 401 of the round-truncated-cone valve 4 of the floating ball valve 3 penetrates out of the cylindrical sealing gasket main body 1, and the distance B from the other end of the cylindrical sealing gasket main body 1 to the valve port 401 is such that when the valve core 6 covers and closes the valve port 401 to close the floating ball valve 3, the valve core 6 cannot continue to move to the cylindrical sealing gasket main body 1 by being arranged on the other end of the cylindrical sealing gasket main body 1.

[0026] Preferably, the thickness of the cylindrical sealing gasket main body 1 is set as follows: one end of the sealing gasket A is arranged on the valve body 5 at the root of the valve 4, and the distance B from the other end (right end) of the sealing gasket A to the valve port 401 is 0.5-3 mm.

[0027] Preferably, the distance B from the other end (right end) of the sealing gasket A to the valve port 401 is 1-2 mm.

[0028] The small deformation is easy to restore the original shape after the deformation force is eliminated, the large deformation (such as the notch is too deep) is not easy to restore the original shape after the deformation, the distance B between the other end (the right end) of the sealing gasket A and the valve port 401 is 0.5-3mm, especially 1-2mm, which can ensure sealing, and is easy to restore the original shape after deformation and elimination of the deformation force.

[0029] As shown in Figure 2 , the circular table-shaped valve ball float valve 3 provided with the sealing gasket A of the utility model works, as water is injected into the water tank, the water level rises, the rising water level drives the floating ball 7 to float upwards, the lever member 8 drives the valve core 6 to move towards the valve port 401, when the water level reaches the set position, the valve core 6 covers and closes the valve port 401, and water cannot be injected into the water tank through the ball float valve;

[0030] As shown in Figure 3 , as the water level of the water tank drops (such as the water in the water tank is boiled to produce steam and is discharged, the water level drops), the floating ball 7 drops, the lever member 8 drives the valve core 6 to move away from the valve port 401, the valve port 401 is opened, and water is injected into the water tank through the ball float valve;

[0031] As water is injected, the 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 6 continuously moves back and forth between being close to the valve port 401 and moving away from the valve port 401, the valve core 6 continuously collides with the valve port 401, due to the buffering support of the sealing gasket A, the valve core 6 is stopped on the other side of the sealing gasket A, even if the valve core 6 is deformed and recessed in the middle part (as shown in Figure 2 ), the valve port 401 cannot form a deep notch in the valve core 6, causing leakage, on the contrary, due to the small deformation, it is easy to restore the original shape (as shown in Figure 3 ), thus no leakage occurs, at the same time, the sealing gasket A also plays a sealing role, a seal is formed between the sealing gasket A and the valve core 6 and between the sealing gasket 6 and the valve 4, further ensuring that the ball float valve 3 will not leak.

Claims

1. A water leakage preventing seal structure for a round-taip-shaped valve float ball valve, characterized by, The sealing gasket comprises a cylindrical sealing gasket body and a circular truncated cone shaped hole arranged in the middle of the cylindrical sealing gasket body, the shape of the circular truncated cone shaped hole in the middle of the cylindrical sealing gasket body matches the circular truncated cone shaped valve of the floating ball valve, and when the sealing gasket is sleeved on the circular truncated cone shaped valve of the floating ball valve, the sealing gasket can tightly clamp the circular truncated cone shaped valve of the floating ball valve to form a sealed connection.

2. The water leakage preventing seal structure for a circular-truncated-cone-shaped ball float valve according to claim 1, characterized by The thickness of the cylindrical sealing gasket body is set such that when one end of the sealing gasket is arranged on the valve body at the root of the valve, the valve port of the circular truncated cone shaped valve of the floating ball valve penetrates out of the cylindrical sealing gasket body, and the distance from the other end of the cylindrical sealing gasket body to the valve port is such that when the valve core covers and closes the valve port to close the floating ball valve, the valve core is arranged on the other end of the cylindrical sealing gasket body, and the valve core cannot continue to move to the cylindrical sealing gasket body.

3. The water leakage preventing seal structure for a circular-truncated-cone-shaped ball float valve according to claim 2, characterized by The thickness of the cylindrical sealing gasket body is set such that when one end of the sealing gasket is arranged on the valve body at the root of the valve, the distance from the other end of the sealing gasket to the valve port is 0.5-3 mm.

4. The water leakage preventing seal structure for a circular-truncated-cone-shaped ball float valve according to claim 3, characterized by The distance B from the other end of the sealing gasket to the valve port is 1-2 mm.

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