JPH0438133Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to a ball tap that supplies water in conjunction with the descent of a float as the water level falls.

(Prior art) As a typical conventional ball tap, the third
There are those shown in the figure.

In this case, a valve seat 36 is formed in a case body 35, a valve body 37 for opening and closing a flow path of this valve seat 36 is installed inside the case body 35, and the valve body 37 is connected to the valve body 37 via a link mechanism 38. Floats 39 are arranged in series.

According to the above configuration, when the moment force based on the weight of the float 39 when the float 39 descends as the water level decreases overcomes the water supply pressure applied to the valve body 37, the valve body 37 opens. The valve is opened and water is supplied, and when the water level returns to a predetermined level, the valve body 37 is closed, and the water supply pressure acts on the valve body 37 while the valve is closed, so that high water stoppage performance can be expected. .

(Problem that the invention aims to solve) However, as the area of the valve body increases, that is, as the water supply capacity increases, a greater valve opening moment is required. The valve required a large displacement of 39 mm, and the valve was not opened unless the water level dropped significantly, resulting in poor water supply response.

The above-mentioned disadvantages are especially noticeable in the case of large-capacity water supply, and sometimes the water supply capacity is limited, or the same is true when the water supply pressure is high, making it necessary to equip multiple ball taps. Things were also hot.

The present invention was developed in view of the above-mentioned conventional drawbacks, and the purpose is to provide a ball tap that not only has excellent responsiveness in water supply control but also can be easily assembled, repaired, and inspected. do.

(Means for Solving the Problems) The ball tap according to the present invention for achieving the above object includes a first cylindrical body 3 forming a water supply channel B;
A second cylindrical body 5 for connecting the water pipe 4, a valve seat 6 around the axis P of this second cylindrical body 5, and this valve seat 6.
A third cylindrical body 8 having a valve body insertion opening 7 facing the
A case body 1 is formed by the third cylinder 8, and a cylinder 13 is screwed into the third cylinder 8 and has a lid 11 which opens downwardly and closes the valve body insertion opening 7 upward. A valve body 14 is provided whose upper part is constantly inserted inside and moves up and down to open and close the valve seat 6.
This valve body 14 includes a valve body holding cylinder 15 which is open at the top and bottom and has outward flanges c and b at the top and bottom, and the holding cylinder 15.
A stopper 16 is screwed into the downward opening to close this opening, a valve body 17 is held under pressure between the fastener 16 and the lower outward flange b, and a valve body 17 is further arranged upwardly outwardly. A cylindrical body 19b with a flange 19a and an open top and bottom, and a fastener 19 screwed into the upper open part of the holding cylinder 15, and clamping pressure between the fastener 19 and the upper outward flange c. A pressure chamber D is formed from a packing material 18 that is held and is in close contact with the inner circumferential wall of the cylinder body 13, and is isolated from the water supply flow path B by the valve body 14, the lid body 11, and the cylinder body 13.
is formed, and the pressure chamber D is communicated with the water supply flow path B through a small diameter flow path E formed by a small diameter hole d bored in the holding cylinder 15 of the valve body 14, A valve shaft hole 20 is bored through the valve shaft hole 20 to communicate with the pressure chamber D, and the valve shaft 2 is formed so as to form an atmosphere opening passage F between the inner wall of the valve shaft hole and the inner wall of the valve shaft hole.
1 is inserted, and at the lower end of the valve shaft 21 protruding into the pressure chamber D, there is a valve body 14 consisting of a valve body 22 and a seat 23 for opening and closing the pressure chamber D side opening of the valve shaft hole 20.
A sub-valve body 24 having a smaller diameter is held by a nut g screwed onto the lower end of the valve stem, and a float 25 is attached to the outwardly projecting end of the lid body 11 of the valve stem 21, and the float 25 is lowered as the water level falls. to open the sub-valve body 24,
Conversely, when the float 25 rises as the water level rises, it is connected by a link mechanism 26 that moves upward to close the sub-valve body 24, and when the sub-valve body 24 is closed, the valve body 14 is closed. The valve body 14 is closed by water supply pressure, and the valve body 14 is opened when the sub valve body 24 is opened.
The feature is that the valve is configured to be opened by water supply pressure.

(Function) In the ball tap configured as described above, when the water level is at a predetermined level and the sub-valve body 24 is closed by the float 25, the pressure chamber D
The internal pressure of the valve body 14 is the same as the water supply pressure in the water supply flow path B, and the water supply pressure applied to the fasteners 16 and 19 of the valve body 14 and its own gravity cause the valve body 14 to be closed. You can leave it there.

Then, when the water level decreases, the float 25 descends and the valve stem 21 is pushed down, and the sub-valve body 24 is switched to the open state, thereby opening the pressure chamber D to the atmosphere. Then, the valve body 14 receives the valve-opening force from the water supply pressure and opens the valve seat 6, so that water is supplied through the water conduit pipe 4.

When the float 25 rises with the above-mentioned water supply and the sub-valve body 14 is closed when the water level reaches a predetermined water level, the water supply pressure in the water supply flow path B is applied to the pressure chamber D. Once, the pressure chamber D
The internal pressure gradually increases, the valve body 14 moves downward in the valve closing direction, and the valve seat 6 eventually closes.

(Embodiment) Hereinafter, an embodiment of the present invention will be described based on the drawings. FIG. 1 shows a cross section of a main part of a ball tap, and FIG. 2 shows a state in which the ball tap is attached to a water tank A.

In the figure, 1 is a case body to which a main water supply pipe 2 is connected, and a first cylindrical body 3 forming a water supply flow path B;
a second cylindrical body 5 for connecting the water pipe 4;
It has a valve seat 6 around the axis P of the cylindrical body 5, and a third cylindrical body 8 forming a valve body insertion opening 7 corresponding to the valve seat 6, and one end of the first cylindrical body 3. A male threaded portion a is formed on the side, and a flange 9 is connected to the terminal end of the male threaded portion a.

Then, the first cylindrical part 3 is inserted into the mounting hole of the water tank wall, and the nut 10 is screwed onto the male threaded part a of the first cylindrical part 3, so that the axis P is aligned in the vertical (vertical) direction. The case body 1 is attached to the water tank wall with the case body 1 facing toward the water tank.

Reference numeral 11 denotes a lid body that closes the upper part of the valve body insertion opening 7 via an O-ring 12, and a cylindrical body 13 that is internally fitted and screwed into the third cylindrical body 8 is connected thereto, and a sub-valve C, which will be described later, is connected thereto. It is provided.

14 always inserts the upper part into the downwardly open cylindrical body 13 and moves in the direction of the vertical axis P to open the valve seat 6.
It is a valve body that opens and closes a flow path, and is a valve body that opens and closes a vertically open valve body holding cylinder 15 and a lower outward flange b of a valve body holding cylinder 15 and the holding cylinder 1.
The valve body 17 is held under clamping pressure by a stopper 16 which is screwed onto the lower opening of the valve 5 to close the valve, and a packing material 18 which is in close contact with the inner surface of the cylindrical body 13 connected to the lid body 11 is attached. By screwing a fastening device 19 consisting of a vertically open cylindrical body 19b with an outwardly facing flange 19a on the upper side into the upper opening of the holding cylinder 15, the outwardly facing flange 19a of this fastening device 19 and the upper part are screwed together. The outer flange c holds the clamping pressure, and the outer circumferential diameter of the packing material 18 is larger than the outer circumferential diameter of the lower flange b, and the valve body 14 receives a biasing force in the valve opening direction due to the water supply pressure. It is configured to receive.

A pressure chamber D isolated from the water supply flow path B is formed by the valve body 14 and the lid body 11 configured in this way, and a small diameter hole d is formed in the holding cylinder 15 of the valve body 14. The pressure chamber D is communicated with the water supply flow path B through a small diameter flow path E formed by the small diameter hole d.

As will be described later, the lower opening of the water conduit 5 is located below the water surface at the time when the valve body 14 opens as the water level falls.

Now, the sub-valve C opens the pressure chamber D to the atmosphere, and has a valve shaft hole 20 penetrating through the lid body 11, and a plurality of raised portions e in the circumferential direction. The valve stem 21 having... is inserted into the valve stem hole 2.
0, and then insert the valve body 22 and its seat 2.
A sub-valve body 24 having a smaller diameter than the valve body 14 consisting of
, the nut g screwed onto the valve stem flange f and the lower end of the valve stem.
The clamping pressure is maintained by the valve stem hole 2 when the valve is open.
0 and the valve shaft 21 is formed with an atmosphere open flow path F. The valve shaft 21 of this sub-valve C is equipped with a float 2 that moves up and down as the water level in the water tank A fluctuates.
5 are connected via a link mechanism 26.

This link mechanism 26 connects a lower link 28 that threadably connects a rod 27 connected to the float 25 and an upper link 29 that connects the valve shaft 21 to a link receiver 30 that is rotatable with respect to the lid body 11. and an adjustment link 31 whose length can be freely changed is pivotally connected to the upper and lower links 28 and 29. By tightening a nut 32 screwed into the lid body 11, the link receiver 30 can be adjusted. It is fixed to the lid body 11 via a metal ring 33.

According to the ball tap having the above configuration, when the water level of the water tank A is as specified, the floating float 25
When the sub-valve body 24 is closed by
The internal pressure of the pressure chamber D is the same as the water supply pressure in the water supply flow path B, and therefore, the fastener 1 of the valve body 14
The valve body 14 can be closed by the water supply pressure applied to the valves 6 and 19 and its own gravity.

When the water level in the water tank A decreases, the float 25 descends and the valve shaft 2
1 is pushed down, and the sub-valve body 24 is switched to the open state, whereby the pressure chamber D is opened to the atmosphere, and the valve body 14 is forced to open by the force of the water supply pressure. In response, the valve seat 6 is opened, and water is then supplied from the main water supply pipe 2 to the water tank A through the water conduit pipe 4.

At this time, the lower opening of the water pipe 5 is
Since the valve body 14 is located below the water surface when the valve is opened, it is possible to prevent the water surface from undulating due to water supply, and to suppress the float 25 from oscillating.

Now, when the float 25 rises as the water is supplied and the valve body 12 is closed when the water level in the water tank A reaches a predetermined water level, the water supply pressure in the water supply flow path B increases as described above. As the pressure chamber D increases, the internal pressure of the pressure chamber D gradually increases, and due to this increase in internal pressure and its own gravity, the valve body 14 moves downward in the valve closing direction, and eventually the valve seat 6 will be closed.

(Effect of the invention) As can be understood from the above-described embodiments, the present invention has a sub-valve element 2 which has a much smaller pressure-receiving area than the pressure chamber D and the valve element 14 that opens and closes the pressure chamber D.
4. Due to the combination of the small diameter channel E consisting of the small diameter hole d drilled in the valve body 14 and the structure in which the float 25 is connected to the valve shaft 21 via the link mechanism 26, the water supply pressure is high. Even if the valve body receiving area is large or a large capacity is to be treated, the valve body 14 can be easily opened and closed, and highly responsive water supply control is now possible.

Moreover, in such a ball tap, the valve body 1
Reference numeral 4 has a structure for holding the valve body 17 and the packing material 18 under pressure with fasteners 16 and 19 screwed into the valve body holding cylinder 15, respectively.
2 and the catch seat 23 are screwed onto the valve shaft 21.
Furthermore, since the lid body 11 also adopts a configuration in which the downwardly open cylinder body 13 is screwed into the third cylinder body 8, assembly of the ball tap is very easy, and repair and inspection are also easy. This process can be carried out efficiently in a short period of time, and not only can costs be reduced, but it is also extremely useful in practice.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, and FIG. 1 is a cross-sectional view of the main part of the ball tap, and FIG. 2 is an explanatory view showing how the ball tap is attached to a water tank.
FIG. 3 is an overall view of a conventional ball tap with a portion cut away. DESCRIPTION OF SYMBOLS 1... Case body, 3... First cylindrical body, 4... Water conduit, 5... Second cylindrical body, 6... Valve seat, 7... Valve body insertion opening, 8... Third cylindrical body , 11... Lid body, 1
3... Cylindrical body, 14... Valve body, 15... Valve body holding cylinder, 16... Fastener, 17... Valve body, 18...
Packing material, 19... Fastening tool, 19a... Outward flange, 19b... Cylindrical body, 20... Valve shaft hole, 2
1... Valve stem, 22... Valve body, 23... Seat, 2
4...Sub-valve body, 25...Float, 26...Link mechanism, B...Water supply channel, D...Pressure chamber, P...
Axial core, b...lower outward flange of valve body holding cylinder,
c... Upper outward flange of valve body holding cylinder, g...
Natsuto.

Claims (1)

[Scope of utility model registration request] The first cylindrical body 3 forming the water supply channel B and the water guide pipe 4
a second cylindrical body 5 for connecting the second cylindrical body 5;
A case body 1 is formed by a valve seat 6 around the axis P of the valve seat 6, and a third cylinder 8 having an opening 7 for inserting a valve body opposite to the valve seat 6. Lid body 11 that closes valve body insertion opening 7 upward when opened
A cylindrical body 13 with
The upper part is constantly inserted into the valve seat 6 and moves up and down.
A valve body 14 for opening and closing is provided, and this valve body 14 is screwed into a valve body holding cylinder 15 which is open at the top and bottom and has outward flanges c and b at the top and bottom, and is screwed into the downward opening of the holding cylinder 15. Fastening device 1 that closes this opening
6, a valve body 17 which is held under pressure between the fastener 16 and the lower outward flange b, and a vertically open cylindrical body 19 further provided with an outward flange 19a above.
b, a fastener 19 screwed into the upper opening of the holding cylinder 15, and a fastener 19 that is held under pinch pressure between the fastener 19 and the upper outward flange c, and is held in close contact with the inner circumferential wall of the cylinder 13; It is formed from a packing material 18 that
This valve body 14, the lid body 11, and the cylinder body 13 form a pressure chamber D isolated from the water supply flow path B, and the pressure chamber D is bored in the holding cylinder 15 of the valve body 14. Small diameter channel E formed by small diameter hole d
The lid body 11 has a valve stem hole 2 which passes through the lid body 11 and communicates with the pressure chamber D.
0 is bored, and the valve stem 21 is inserted so as to form an atmosphere open flow path F between the inner wall of the valve stem hole and the lower end of the valve stem 21 that enters the pressure chamber D. A sub-valve element 24, which is smaller in diameter than the valve element 14 and is comprised of a valve main body 22 and a seat 23 for opening and closing the pressure chamber D side opening of the valve stem hole 20, is held by a nut g screwed onto the lower end of the valve stem. A float 25 is attached to the outwardly projecting end of the lid 11 of the valve shaft 21, and the float 25
The link mechanism 2 operates so that it moves downward to open the sub-valve body 24 when the float 25 falls, and moves upward to close the sub-valve body 24 when the float 25 rises as the water level rises.
6, the valve body 14 is closed by water supply pressure when the sub-valve body 24 is closed, and the valve body 14 is opened by the water supply pressure when the sub-valve body 24 is open. A ball tap configured to be valved.