CN212899854U

CN212899854U - Float valve

Info

Publication number: CN212899854U
Application number: CN202021864688.5U
Authority: CN
Inventors: 方立昌
Original assignee: Beijing Jingxinjiachuang Technology Co ltd
Current assignee: Beijing Jingxinjiachuang Technology Co ltd
Priority date: 2020-08-31
Filing date: 2020-08-31
Publication date: 2021-04-06
Anticipated expiration: 2030-08-31

Abstract

The utility model provides a ball-cock assembly, automatic liquid level control technical field to solve the problem of easy wearing and tearing between piston and the valve body of the piston ball-cock assembly among the prior art, this ball-cock assembly includes control valve (1), control valve (1) includes valve body (16) and case (14), wherein be equipped with valve pocket (17) in valve body (16), case (14) rotate set up in valve pocket (17) the centre of case is provided with conducting hole (141), case (14) can valve pocket (17) internal rotation is in order to control conducting hole (141) with the intercommunication or the disconnection of valve pocket (17) runner. The utility model discloses a ball-cock assembly valve body is difficult to wearing and tearing, and the closure is good, is difficult to the weeping, and long service life and inside no dead angle are adapted to the medium that has the sanitary-grade requirement.

Description

Float valve

Technical Field

The utility model belongs to the technical field of automatic liquid level control device technique and specifically relates to a ball-cock assembly is related to.

Background

A ball float valve is widely used as a liquid control valve in water containers such as water tanks, toilet bowls, water towers and the like. The float of the float valve always floats on the water, and the valve is automatically controlled to be opened or closed by the buoyancy of the liquid. At present, the structure of current ball cock valve generally includes the valve body, the piston, several essential element such as connecting rod and buoy, this kind of ball cock valve's theory of operation is, when the surface of water rises, the buoy also follows to rise, the buoy passes through the connecting rod pulling and pushes away the piston in the valve body toward the valve body in, because the sealing function of valve body, therefore, the running water is closed by the ball cock valve, stop supplying water, when the water tank water level is low, the buoy reduces along with the water level, the piston in the valve body is driven outwards to stretch through the connecting rod of fixed buoy, make and produce the vacancy between valve body and the piston, can make the water in the pipeline get into the water tank, after the buoy receives the buoyancy of water to rise, just close the water with the valve closure.

The application of the piston type float valve is very extensive at present, but the following problems exist: on one hand, the piston structure is easy to wear and tear between the piston and the valve body due to long-time reciprocating motion, the sealing performance of the piston is affected by particles generated by wear, the piston valve body is not closed tightly, liquid leakage and other problems are caused, the service life is short, and on the other hand, the piston valve body structure is not suitable for media with sanitary requirements due to the fact that dead corners exist in the piston valve body structure.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a ball-cock assembly to solve the problem of easy wearing and tearing between piston and the valve body of the piston ball-cock assembly among the prior art, the utility model discloses a ball-cock assembly valve body is difficult to wearing and tearing, and closeness is good, is difficult to the weeping, and long service life and inside no dead angle are adapted to the medium that has the sanitary-grade requirement.

The utility model provides a pair of float valve, including the control valve, the control valve includes valve body and case, wherein be equipped with the valve pocket in the valve body, the case rotate set up in the valve pocket the centre of case is provided with the conducting hole, the case can the valve pocket internal rotation is in order to control the conducting hole with the intercommunication or the disconnection of valve pocket runner.

As a preferred scheme of the utility model, still include buoy and connecting rod, the one end of connecting rod is connected the buoy, the other end of connecting rod is connected the control valve, the control valve still includes the valve rod, the valve rod is followed the outside of valve body extends to in the valve pocket, the valve rod is connected to on the case, so that the valve rod can drive around its axis is rotatory the case synchronous revolution, the valve rod axis passes the center of case, the control valve passes through the valve rod is connected the connecting rod, pass through during the buoy motion the connecting rod drives the valve rod drives the case rotates.

As an optimal scheme of the utility model the upper and lower both ends of valve pocket be equipped with respectively can with import and export that the valve pocket is linked together, the direction that sets up of conducting hole with the valve rod is mutually perpendicular, the case can rotate the messenger the conducting hole with import and export form intercommunication or cut off the structure, the tip of import and export all is equipped with the ring flange.

As an optimized scheme of the utility model, the case is the spheroid, the valve body is hollow tubular structure, be provided with two perpendicular to in the valve body the snap ring of valve body pipe wall, be provided with the passage hole in the centre of snap ring, two between the snap ring space in the valve body forms the valve pocket the case with be equipped with flexible sealing pad between the valve pocket.

As a preferred scheme of the utility model, still be connected with the connecting piece on the valve body, the connecting piece with the valve rod set up respectively in the both sides of valve body.

As a preferred scheme of the utility model, the connecting rod with the one end that the control valve is connected extends first branch and second branch, wherein, the tip of first branch is provided with first through-hole, the tip of second branch is provided with the second through-hole, first branch passes through first through-hole is connected the valve rod, second branch passes through the second through-hole is connected the connecting piece, first branch with second branch is about connecting the extension line symmetry of the connecting rod of buoy one end.

As a preferred scheme of the utility model, the valve body still including set up respectively in the first lateral part and the second lateral part of valve body both sides, first lateral part with the outside outstanding setting of second lateral part, the valve rod passes first lateral part extends to in the valve pocket, the connecting piece connect in on the second lateral part, first lateral part with the upper end of second lateral part all is provided with and is used for spacingly the spacing of connecting rod colludes.

As a preferred scheme of the utility model, the valve rod is connected the one end of case is provided with the key, be provided with in the outer fringe of case with the keyway of key looks adaptation, the valve rod passes through the key with the keyway with the case is connected, the valve rod is connected the one end of first branch is equipped with the reference column, the reference column with first through-hole looks adaptation, the valve rod passes through the reference column with first through-hole with first branch is connected.

As a preferred scheme of the utility model, the lateral wall of buoy is cylindric, the centre at the upper and lower both ends of buoy is circular plane, circular plane with lateral wall smooth connection.

As a preferred scheme of the utility model, the bottom of buoy is provided with the installed part, be provided with the through-hole on the installed part, the connecting rod pass through bolt and through-hole with the installed part is connected.

Compared with the prior art, the utility model discloses there is following positive effect:

1. the utility model provides a ball-cock assembly, through including the control valve, the control valve includes valve body and case, wherein, is equipped with the valve pocket in the valve body, and the case rotates and sets up in the valve pocket, is provided with the conducting hole in the centre of case, and the case can be at the intercommunication or the disconnection of valve pocket internal rotation with control conducting hole and valve pocket runner. The float valve is characterized by that it utilizes a rotary valve core to make control valve unblocked or blocked, and the control valve is light in opening and closing, and can reduce wear of valve core and valve body, and can make the control valve not easy to leak liquid, and can prolong its service life, and its sealing is reliable, and has no internal dead angle, so that said float valve can be used for fluid medium with sanitary requirements.

2. The embodiment of the utility model provides a ball cock assembly still is connected with the connecting piece through on the valve body, and the connecting piece sets up respectively in the both sides of valve body with the valve rod, and the connecting rod extends first branch and second branch in the one end of being connected with the control valve, and wherein, the tip of first branch is provided with first through-hole, and the tip of second branch is provided with the second through-hole, and first branch is connected through first through-hole the valve rod, second branch pass through second through-hole connects the connecting piece, two branches are about the extension line symmetry of the connecting rod of connection control valve one end. First branch and second branch are connected on the valve rod and the connecting piece of control valve both sides to make the connecting rod more firm with the connection of control valve, avoid causing the connecting rod to take off the festival with the valve rod of control valve because of the long-time up-and-down motion of connecting rod along with the buoy, connect the connecting piece through second branch and make to have two between connecting rod and the control valve to be connected, thereby guarantee the fastness that connecting rod and control valve are connected, make the connecting rod more steady along with the motion of buoy, it is safer.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic structural view of the float valve of the present invention;

FIG. 2 is a right side view of the float valve of the present invention;

fig. 3 is a schematic structural view of the connecting rod of the present invention;

fig. 4 is a schematic view of the internal structure of the control valve of the floating ball valve according to the present invention;

fig. 5 is a schematic view of the internal structure of the control valve of the present invention;

fig. 6 is a top view of the valve cartridge of the present invention;

fig. 7 is a schematic structural view of the valve stem of the present invention;

fig. 8 is a schematic view of the usage state of the float valve of the present invention.

In the figure: 1. a control valve; 10. a gasket; 11. a flange plate; 12. a limiting hook; 13. a valve stem; 131. a key; 132. a positioning column; 133. a convex ring; 14. a valve core; 141. a via hole; 142. a keyway; 15. a connecting member; 16. a valve body; 161. a first side portion; 162. a second side portion; 17. a valve cavity; 171. a snap ring; 172. a passage hole; 18. an inlet; 19. an outlet; 2. a connecting rod; 21. a first support bar; 211. a first through hole; 22. a second support bar; 221. a second through hole; 23. positioning blocks; 3. a float; 31. a mounting member; 32. a circular plane; 33. a side wall; 4. a water inlet pipe; 5. the surface of the water.

Detailed Description

In the description of the present invention, it is to be noted that, unless otherwise specified, "a plurality" means two or more; the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplicity in description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meaning of the above terms in the present invention can be understood as the case may be, by those of ordinary skill in the art.

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

Example 1:

the float valve provided by the present embodiment, as shown in fig. 1 to 8, includes a control valve 1, where the control valve 1 includes a valve body 16 and a valve core 14, where a valve cavity 17 is disposed in the valve body 16, the valve core 14 is rotatably disposed in the valve cavity 17, a through hole 141 is disposed in the middle of the valve core, and the valve core 14 can rotate in the valve cavity 17 to control the connection or disconnection between the through hole 141 and a flow passage of the valve cavity 17. Specifically, the via hole 141 is a through hole. The ball cock of this embodiment controls the intercommunication or the disconnection of conducting hole 141 and valve chamber 17 runner through the case 14 internal rotation in the valve body 16, can effectively reduce the wearing and tearing between case and the valve body, make control valve 1 be difficult to the weeping, prolong its life, and set up in valve chamber 17 through case 14 rotation, make control valve 1's leakproofness better, there is not the clearance between case 14 and the valve chamber 17, there is not inside dead angle, avoid fluid medium to persist in valve chamber 17, make the ball cock of this embodiment can be used to have the fluid medium of sanitary-grade requirement as: food and drink, etc.

As a preferred technical solution of this embodiment, as shown in fig. 1-5, the float valve further includes a float 3 and a connecting rod 2, one end of the connecting rod 2 is connected to the float 3, the other end of the connecting rod 2 is connected to the control valve 1, the control valve 1 further includes a valve rod 13, the valve rod 13 extends into a valve cavity 17 from the outside of the valve body 16, the valve rod 13 is connected to the valve core 14, so that the valve rod 13 rotates around its axis to drive the valve core 14 to rotate synchronously, the axis of the valve rod passes through the center of the valve core 14, the control valve 1 is connected to the connecting rod 2 through the valve rod 13, and the valve core 14 is driven to rotate by the valve rod 13 driven. The float valve of this embodiment moves up and down along with the change of the liquid level of the fluid medium through the buoy to drive the connecting rod to move, and the connecting rod drives the valve rod to rotate, and then drives the valve core to rotate synchronously, thereby controlling the circulation state of the fluid medium in the valve cavity 17.

As a preferred technical solution of this embodiment, as shown in fig. 4-5, an inlet 18 and an outlet 19 which can be communicated with the valve chamber 17 are respectively arranged at the upper end and the lower end of the valve chamber 17, the installation direction of the through hole 141 is perpendicular to the valve rod 13, the valve core 14 can rotate to enable the through hole 141 to form a communicating or blocking structure with the inlet 18 and the outlet 19, and flanges 11 are arranged at the end parts of the inlet 18 and the outlet 19 for connecting the front ends of the inflow pipe and the outflow pipe. When the valve core 14 rotates to the through hole 141 and is parallel to the flow channel of the valve cavity 17, the inlet 18 and the outlet 19 of the control valve 1 are communicated, so that the fluid medium passes through the valve cavity 17 of the control valve 1, and when the valve core 14 rotates to the through hole 141 and is perpendicular to the flow channel of the valve cavity 17, the inlet 18 and the outlet 19 of the control valve 1 are blocked, so that the fluid medium cannot pass through the valve cavity 17 of the control valve 1. The floating ball valve of this embodiment is connected through flange 11 when making control valve 1 be connected with the pipeline through flange 11 at the equal tip of import 18 and export 19 to it is convenient to make to dismantle between control valve 1 and the pipeline, and joint strength is high, and the leakproofness is good. Alternatively, the ends of the inlet 18 and outlet 19 may be threaded and connected to the pipes by threads. Furthermore, the ends of the inlet 18 and outlet 19 may be connected to the pipes by means of a clamp connection or a butt weld connection.

As a preferred technical solution of this embodiment, as shown in fig. 4-5, the valve core 14 is a sphere, and the diameter of the outer circle of the valve core 14 is slightly smaller than the valve cavity 17. The valve body 16 is a hollow tubular structure, two clamping rings 171 perpendicular to the tube wall of the valve body are arranged in the valve body 16, the periphery of the clamping ring 171 is connected with the tube wall of the valve body, and a channel hole 172 is arranged in the middle of the clamping ring 171 and used for flowing of fluid media. The space in the valve body 16 between the two snap rings 171 forms a valve cavity 17, and a flexible sealing gasket 10 is arranged between the valve core 14 and the valve cavity 17, so that the sealing performance of the valve core 14 in the valve cavity 17 is ensured, a fluid medium does not leak in the valve cavity 17, and meanwhile, the abrasion of the valve core in the valve cavity is reduced.

Example 2

As a specific implementation manner of embodiment 1, in this embodiment, as shown in fig. 4 to 5, a connecting member 15 is further connected to the valve body 16, and the connecting member 15 and the valve rod 13 are respectively disposed on two sides of the valve body 16. The connecting piece 15 and the valve rod 13 are perpendicular to the pipeline of the valve body 16. Allowing the connection 15 and the valve stem 13 to be conveniently connected to the connecting rod 2. When the control valve 1 is connected to the water inlet pipe 4, the movement direction of the buoy 3 is the same as the installation direction of the water inlet pipe 4.

As a preferable technical solution of the present embodiment, as shown in fig. 3, the connecting rod 2 extends a first supporting rod 21 and a second supporting rod 22 at one end connected to the control valve 1, wherein the end of the first supporting rod 21 is provided with a first through hole 211, the end of the second supporting rod 22 is provided with a second through hole 221, the first supporting rod 21 is connected to the valve rod 13 through the first through hole 211, and the second supporting rod 22 is connected to the connecting piece 15 through the second through hole 221. As shown in fig. 4-5, the connecting member 15 is a bolt, the bolt is fixed on the valve body 16, a gap space for the second support rod 22 to rotate is reserved between the bolt and the valve body, the second through hole 221 is circular, so that the second support rod 22 can rotate when the bolt is connected to the valve body, and a gasket may be disposed between the bolt and the second support rod 22. Specifically, when the first support rod 21 is connected to the valve rod 13, a nut is further connected to the valve rod 13 outside the first support rod 21, so that the first support rod 21 is limited and prevented from moving outwards. A gasket may be provided between the first strut 21 and the valve body for avoiding wear of the first strut 21 and the valve body. The first supporting rod 21 and the second supporting rod 22 are symmetrical about the extension line of the connecting rod 2 connected with one end of the buoy, and the first supporting rod 21 and the second supporting rod 22 which are symmetrically arranged are connected to two sides of the valve body 16, so that the connecting rod is stressed in a balanced manner when moving up and down, the connecting rod has good bearing performance, the stability of long-time up-and-down movement is ensured, and the connecting rod is connected with the valve body 16 more firmly. The ball cock of this embodiment is in the one end of connecting rod 2 connection control valve 1, connect on the valve rod 13 and the connecting piece 15 of control valve both sides through first branch 21 and second branch 22, avoid causing the valve rod 13 disjointing of connecting rod 2 and control valve 1 because of the long-time up-and-down motion of connecting rod along with the buoy, it makes to have two departments to be connected between connecting rod and the control valve to connect connecting piece 15 through second branch 22, thereby guarantee the fastness that connecting rod 2 and control valve 1 are connected, it is more steady to make the connecting rod follow the motion of buoy, it is safer.

As a preferred technical solution of the present embodiment, as shown in fig. 4-5, the valve body 16 further includes a first side portion 161 and a second side portion 162 respectively disposed at two sides of the valve body, the first side portion 161 and the second side portion 162 are disposed to protrude outward, the valve rod 13 passes through the first side portion 161 and extends into the valve cavity 17, the connecting member 15 is connected to the second side portion 162, and the upper ends of the first side portion 161 and the second side portion 162 are both provided with a position-limiting hook 12 for limiting the position of the connecting rod 2. Specifically, the limit hook 12 extends on the valve body 16 to a side away from the valve cavity 17. Specifically, the ends of the first and

second struts

21 and 22 extend outward to form a positioning block 23. As shown in fig. 8, when the fluid medium is water, the floating height of the buoy in the water is limited by the limiting hook 12. When the water surface 5 is higher than the setting height of the float valve, if the valve rod 13 is limited without the limiting hook 12, the float can continuously rise along with the height of the water surface 5, the valve core 14 rotates, the conducting hole 141 can gradually rotate towards the direction parallel to the flow channel of the valve cavity 17, so that the pipeline enters water, the water surface 5 can continuously rise, the conducting hole 141 is gradually parallel to the flow channel of the valve cavity 17, the water inflow is increased, the water entering in the water tank is uncontrollable, and the float valve fails, therefore, the limiting hook 12 is arranged for limiting the valve rod 13, the connecting rod is limited below the horizontal position to move, after the water surface 5 rises to a certain height, the float is limited at the position and does not float along with the rising of the water surface 5, and the water level in the water tank is controlled below the certain height. When the water surface 5 descends to a certain height, the buoy is located on the water surface and moves downwards to drive the connecting rod to rotate downwards, and when the buoy rotates to a certain angle, the positioning blocks 23 on the first supporting rod 21 and the second supporting rod 22 are clamped at the position of the limiting hook 12, so that the connecting rod 2 cannot rotate downwards any more, and the descending height of the water surface is limited.

As shown in fig. 4 to 7, as a preferred technical solution of this embodiment, as shown in fig. 4 to 7, a key 131 is disposed at one end of the valve rod 13 connected to the valve core 14, a key groove 142 adapted to the key 131 is disposed on an outer edge of the valve core 14, and the valve rod 13 is connected to the valve core 14 through the key 131 and the key groove 142, so that the valve rod 13 can drive the valve core 14 to synchronously rotate when rotating, and the valve rod and the valve core cannot slip, and the connection is more reliable. While the keyway is shown as being generally rectangular in shape, it may be of various other geometries that may be connected in keyed relation to the outer periphery of the valve cartridge. As shown in fig. 7, a positioning column 132 is disposed at one end of the valve rod 13 connected to the first supporting rod 21, the positioning column 132 is adapted to the first through hole 211, and the valve rod 13 is connected to the first supporting rod 21 through the positioning column 132 and the first through hole 211. Specifically, the first through hole is semicircular, and the cross section of the positioning column 132 is semicircular, so that the first through hole is connected with the first support rod 21. The cross section of the positioning column 132 and the first through hole can also be in the shape with edges and corners such as a rectangle, so that the rotation of the connecting rod can drive the valve rod to rotate synchronously. The one end that valve rod 13 was equipped with key 131 is provided with bulge loop 133, and bulge loop 133 sets up along the valve rod 13 periphery of key 131 upper end, and when valve rod 13 passed valve body 16 and connects on the case, the bulge loop card was in valve body 16 to carry on spacingly to the valve rod, avoid the valve rod to break away from out from one side of valve body.

Example 3

In this embodiment, as an embodiment of example 1, as shown in fig. 1 and 4, the side wall 33 of the float 3 is cylindrical, the middle of the upper and lower ends of the float 3 is a circular flat surface 32, and the circular flat surface 32 is smoothly connected to the side wall 33. The buoy 3 floats on the water surface 5, the change of the water level drives the buoy to move up and down, and the circular plane 32 on the bottom surface of the buoy enables the buoy to have a larger stress surface and better floating performance. Specifically, the buoy comprises two halves, and the upper half buoy is connected with the lower half buoy in a sealing mode.

As a preferred embodiment of the present invention, as shown in fig. 1, the bottom end of the buoy is provided with a mounting member 31, the mounting member 31 is provided with a through hole, and the connecting rod 2 is connected to the mounting member 31 through a bolt and the through hole. The connecting rod 2 and the buoy are connected more firmly and reliably through the bolt.

The utility model discloses a float valve makes control valve 1 unblocked or be blocked by rotatory case, and this control valve switch is light, and is small, sealed reliable, simple structure, easy maintenance is difficult for being washed out by the medium. The use state when the ball float valve is installed on the water inlet pipe in the water tank is as shown in fig. 8, when the water level descends, the float descends along with the water surface 5, thereby driving the valve core 14 to rotate, making the via hole 141 gradually rotate to the direction parallel to the flow channel of the valve cavity 17, thereby making the pipe inlet water. When the water surface 5 rises, the buoy also rises, the buoy drives the valve rod through the connecting rod, the valve rod drives the valve core 14 to rotate, the valve core 14 rotates along with the rising of the buoy along with the water surface 5, the conducting hole 141 gradually rotates towards the direction perpendicular to the flow channel of the valve cavity 17, when the water surface 5 rises to a certain height, the conducting hole 141 is perpendicular to the flow channel of the valve cavity 17, and the pipeline stops water inflow.

For the float valve not described in the present invention, it is the prior art.

The above description is only for the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art can make several modifications and improvements without departing from the inventive concept, and all shall be covered by the protection scope of the present invention.

Claims

1. The float valve is characterized by comprising a control valve (1), wherein the control valve (1) comprises a valve body (16) and a valve core (14), a valve cavity (17) is formed in the valve body (16), the valve core (14) is rotatably arranged in the valve cavity (17), a through hole (141) is formed in the middle of the valve core, and the valve core (14) can rotate in the valve cavity (17) to control the communication or disconnection between the through hole (141) and a flow passage of the valve cavity (17).

2. A float valve in accordance with claim 1, characterized by further comprising a float (3) and a connecting rod (2), one end of the connecting rod (2) is connected with the buoy (3), the other end of the connecting rod (2) is connected with the control valve (1), the control valve (1) further comprising a valve stem (13), the valve stem (13) extending from the outside of the valve body (16) into the valve chamber (17), the valve stem (13) being connected to the valve spool (14), so that the valve rod (13) rotates around the axis thereof and can drive the valve core (14) to synchronously rotate, the axis of the valve rod passes through the center of the valve core (14), the control valve (1) is connected with the connecting rod (2) through the valve rod (13), when the buoy (3) moves, the valve rod (13) is driven by the connecting rod (2) to drive the valve core (14) to rotate.

3. The float valve according to claim 2, wherein an inlet (18) and an outlet (19) which can be communicated with the valve cavity (17) are respectively arranged at the upper end and the lower end of the valve cavity (17), the arrangement direction of the through hole (141) is vertical to the valve rod (13), the valve core (14) can rotate to enable the through hole (141) to form a communicating or separating structure with the inlet (18) and the outlet (19), and the end parts of the inlet (18) and the outlet (19) are respectively provided with a flange (11).

4. A float valve in accordance with claim 3, characterized in that the valve core (14) is a sphere, the valve body (16) is a hollow tubular structure, two snap rings (171) perpendicular to the wall of the valve body are arranged in the valve body (16), a passage hole (172) is arranged in the middle of the snap rings (171), the space in the valve body (16) between the two snap rings (171) forms the valve chamber (17), and a flexible sealing gasket (10) is arranged between the valve core (14) and the valve chamber (17).

5. A float valve in accordance with claim 2, characterized in that a connecting piece (15) is further connected to the valve body (16), and the connecting piece (15) and the valve rod (13) are respectively arranged on both sides of the valve body (16).

6. A float valve according to claim 5, characterized in that the connecting rod (2) extends at the end connected to the control valve (1) with a first strut (21) and a second strut (22), wherein the end of the first strut (21) is provided with a first through hole (211) and the end of the second strut (22) is provided with a second through hole (221), the first strut (21) is connected to the valve stem (13) through the first through hole (211), the second strut (22) is connected to the connecting piece (15) through the second through hole (221), and the first strut (21) and the second strut (22) are symmetrical with respect to the extension of the connecting rod (2) connected to the end of the float.

7. The float valve according to claim 6, wherein the valve body (16) further comprises a first side portion (161) and a second side portion (162) respectively disposed at two sides of the valve body, the first side portion (161) and the second side portion (162) are disposed to protrude outwards, the valve rod (13) passes through the first side portion (161) and extends into the valve cavity (17), the connecting member (15) is connected to the second side portion (162), and the upper ends of the first side portion (161) and the second side portion (162) are both provided with a limiting hook (12) for limiting the connecting rod (2).

8. The float valve according to claim 6, wherein a key (131) is arranged at one end of the valve rod (13) connected with the valve core (14), a key groove (142) matched with the key (131) is arranged at the outer edge of the valve core (14), the valve rod (13) is connected with the valve core (14) through the key (131) and the key groove (142), a positioning column (132) is arranged at one end of the valve rod (13) connected with the first support rod (21), the positioning column (132) is matched with the first through hole (211), and the valve rod (13) is connected with the first support rod (21) through the positioning column (132) and the first through hole (211).

9. A float valve in accordance with claim 2, characterized in that the side wall (33) of the float (3) is cylindrical, and the middle of the upper and lower ends of the float (3) is a circular plane (32), and the circular plane (32) is smoothly connected with the side wall (33).

10. A float valve in accordance with claim 8, characterized in that the bottom end of the float is provided with a mounting (31), that the mounting (31) is provided with a through hole, and that the connecting rod (2) is connected to the mounting (31) by means of bolts and through holes.