CN2694058Y

CN2694058Y - Float valve

Info

Publication number: CN2694058Y
Application number: CN 200420022578
Authority: CN
Inventors: 黄樟焱; 王二林
Original assignee: 叶建荣
Current assignee: Qinyuan Group Co Ltd
Priority date: 2004-05-09
Filing date: 2004-05-09
Publication date: 2005-04-20
Anticipated expiration: 2014-05-09

Abstract

The utility model provides a float ball valve. The utility model comprises a valve body, an L-shaped lever, a float ball and a sealing pad matching with a water inlet hole. The water inlet hole is arranged in the valve body. The L-shaped lever is pivoted with the valve body. A first lever arm is connected with the float ball. The utility model is characterized in that the front end of the sealing pad is pyramidal. The tail part of the sealing pad is fixed at one end of a base body. The base body slides in the holding cavity in the valve body. The other end of the base body contacts with a second lever arm. The second lever arm opposing to the base body can be provided with a salient pillar. The outer part of the salient pillar is covered with a bumper pad. The advantages of the utility model are: the turning of the lever is converted into the sliding of the base body and the pyramidal sealing pad is caused to insert into the water inlet hole stably. Because the contacting between the pyramidal sealing pad and the water inlet hole is the annular contacting, the sealing of the valve is caused to be tighter under the situation of ensuring the pressure of each point of the contacting position of the pyramidal sealing pad and the water inlet hole is the same. In this way, the sealing effect of the float ball valve is ensured.

Description

A kind of float valve

Technical field

The utility model relates to a kind of valve, especially refers to a kind of float valve.

Background technique

Float valve is as a kind of valve that relies on buoyancy of liquid to come automatic on-off, be widely used in the device such as various water tanks, and at present, for satisfying people's use needs, float valve has been set as multiple structure, as publication number is " float valve " a kind of for wherein just of CN2599084Y, in this scheme, float valve comprises valve body, L type lever and ball float, offer a water inlet on the valve body, the intersection prolongation of L type lever is sentenced bearing pin and is articulated on the valve body, and an arm of force of L shaped lever is right against the water inlet, and on arm of force plane, be provided with soft rubber cushion, and another arm of force is connected with ball float.Therefore, in use, along with the variation of liquid level height in the container, ball float floats thereupon or floats downward, and drives L shaped lever then and rotates, and makes the soft rubber cushion on the one arm of force block water intake or be disengaged position, thereby plays the effect of sealing or water inlet.Yet because in seal process, lever is in rotary state all the time, and be the plane contact state between rubber cushion and the water intake, thereby make the each point on the rubber cushion contact plane produce different pressure, finally cause each dot encapsulation on the surface of contact to differ and water leakage phenomenon takes place, and along with the use of rubber cushion is aging, this plane contact mode also easily produces water leakage phenomenon; In addition, an arm of force that is provided with rubber cushion is longer than another arm of force that is connected with ball float, can draw according to lever principle, under same buoyancy function, the pressure that puts on the rubber cushion is less, has also influenced sealing effect thus, and therefore this float valve still has unsatisfactory part in the use.

Summary of the invention

Technical problem to be solved in the utility model is the float valve that a kind of good sealing effect is provided at above-mentioned prior art present situation.

The utility model solves the problems of the technologies described above the technological scheme that is adopted: the sealing gasket of establishing the valve body of water inlet, L shaped lever, ball float in this float valve comprises and matching with the water inlet, described L shaped lever and described valve body are articulated, wherein first lever arm links to each other with ball float, it is characterized in that: described sealing gasket front end is cone-shaped, its afterbody is fixed on the end of pedestal, and described pedestal slides in the interior cavity volume of valve body, and its other end and described second lever arm offset.

Can be provided with a projection on second lever arm relative, be coated with cushion pad at this projection, with the working life of elongated component with described pedestal.

Described pedestal appearance can axially be provided with the guiding rib that matches with described cavity volume, and it is more steady to make pedestal slide.

Described second lever arm is good to be shorter than first lever arm, makes to have bigger impacting force on the sealing gasket.

Outside the described valve body and second lever arm, can also be provided with water retaining cover.

Described pedestal can take the shape of the letter U, and the afterbody of described sealing gasket tightly inserts in the opening end of this pedestal.

Pivoting point between described L shaped lever and the described valve body can be positioned at arm crossing place of L shaped lever, also can be positioned at the end side extended spot of second lever arm.

Compared with prior art, advantage of the present utility model is: the slip that the rotation of lever is converted into pedestal, make conical gasket insert in the water inlet reposefully, and owing to contact in the form of a ring between conical gasket and the water intake, thereby when guaranteeing that each point pressure of the two contacting point is identical, make that the sealing of valve is tighter, thereby guaranteed the sealing effect of float valve.

Description of drawings

Fig. 1 is the utility model first embodiment's a structural representation;

Fig. 2 be among Fig. 1 A-A to generalized section;

User mode schematic representation when Fig. 3 is installed in container side for the utility model first embodiment;

Fig. 4 is the utility model second embodiment's a structural representation;

User mode schematic representation when Fig. 5 is installed in container top surface for the utility model second embodiment.

Embodiment

Embodiment describes in further detail the utility model below in conjunction with accompanying drawing.

Embodiment 1, as depicted in figs. 1 and 2, this float valve comprises valve body 7, lever 2, ball float 1, pedestal 5 and the sealing gasket 6 that matches with water inlet 14, the L shaped structure that described lever 2 is made up of first lever arm and second lever arm, wherein first lever arm links to each other with ball float 1, second lever arm is shorter than first lever arm, and is articulated by bearing pin 11 and valve body 7 at the infall of first lever arm and second lever arm; Described valve body 7 hollows, the middle part is provided with demarcation strip, above-mentioned water inlet 14 is positioned on this demarcation strip, on the valve body 7 of demarcation strip one side, be shaped on internal and external screw thread, so that connecting tube and fixing using, and become a cavity volume in the valve body of demarcation strip opposite side, in this cavity volume, be provided with a U-shaped pedestal 5, the bottom of this pedestal 5 and second lever arm offset, and are fixed with above-mentioned sealing gasket 6 on its opening end, in the present embodiment, the front end of sealing gasket 6 is cone, its afterbody is cylindrical body, and tightly inserts in pedestal 5 opening ends, and sealing gasket 6 is fixed on the pedestal 5.

For pedestal 5 is slided in cavity volume steadily, in the present embodiment, the appearance of pedestal 5 axially is provided with the guiding rib 13 that matches with cavity volume, and this guiding rib 13 has four, is distributed on pedestal 5 in appearance.Simultaneously in order to avoid the wearing and tearing during collision, on second lever arm relative, be provided with a projection 4 with pedestal 5, be coated with cushion pad 12 at this projection 4.In addition, water spatters outward when preventing valve opening, also is provided with water retaining cover 3 outside the described valve body 7 and second lever arm.

During installation, as shown in Figure 3, the valve body 7 that is shaped on threaded end is inserted in the mounting hole of container wall 9 sides, and fastening with nut 10, simultaneously,, on the valve body 7 between demarcation strip and the container wall 9, be with seal ring 8 for preventing in mounting hole, leaking.During use, liquid level in container begins to occur descending, ball float 1 is just floated downward thereupon, then driving L shaped lever 2 rotates counterclockwise, projection 4 on such second lever arm leaves pedestal 5 afterbodys, under the promotion of intake pressure, conical gasket 6 leaves water inlet 14, and water is in the 14 inflow containers of water inlet.Adding along with water, liquid level in the container constantly rises, ball float 1 floats thereupon, then driving L shaped lever 2 rotates along inserting needle, make the projection 4 on second lever arm promote pedestal 5 afterbodys, pedestal 5 is slided to water inlet 14 sides, and conical gasket 6 inserts in the water inlet 14 the most at last, reaches to stop the into purpose of water., work again and again like this, realized the function of float valve automatic on-off.

Embodiment 2, as shown in Figure 4 and Figure 5, itself and above-mentioned first embodiment's difference are float valve is installed on the end face of container wall 9, at this moment, for the rotation needs of ball float 1, adaptive change is done in the articulating point position that L shaped lever 2 and valve body are 7, promptly this moment, articulating point was positioned at the end side extended spot of second lever arm, make lever 2 rotate still nimbly and freely, other structure and working principle are same as described above, here are not repeated.

Claims

1, a kind of float valve, the sealing gasket (6) of establishing the valve body (7) of water inlet (14), L shaped lever (2), ball float (1) in comprising and matching with water inlet (14), described L shaped lever (2) is articulated with described valve body (7), wherein first lever arm links to each other with ball float (1), it is characterized in that: described sealing gasket (6) front end is cone-shaped, its afterbody is fixed on pedestal (5) one ends, and described pedestal (5) slides in the interior cavity volume of valve body (7), and its other end and described second lever arm offset.

2, float valve according to claim 1 is characterized in that: second lever arm relative with described pedestal (5) is provided with a projection (4), is coated with cushion pad (12) at this projection (4).

3, float valve according to claim 1 is characterized in that: described pedestal (5) appearance axially is provided with the guiding rib (13) that matches with described cavity volume.

4, according to claim 1 or 2 or 3 described float valves, it is characterized in that: described second lever arm is shorter than described first lever arm.

5, according to claim 1 or 2 or 3 described float valves, it is characterized in that: outside the described valve body and second lever arm, also be provided with water retaining cover (3).

6, according to claim 1 or 2 or 3 described float valves, it is characterized in that: described pedestal (5) takes the shape of the letter U, and the afterbody of described sealing gasket (6) tightly inserts in the opening end of this pedestal (5).

7, according to claim 1 or 2 or 3 described float valves, it is characterized in that: the pivoting point between described L shaped lever (2) and the described valve body (7) is positioned at arm crossing place of L shaped lever (2).

8, according to claim 1 or 2 or 3 described float valves, it is characterized in that: the pivoting point between described L shaped lever (2) and the described valve body (7) is positioned at the end side extended spot of second lever arm.