JP4189027B1 - Valve body and flow control valve - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a valve body used by switching between normal water discharge and flow rate control water discharge by a water control piece instantaneously, and a flow control valve using the valve body.
SOLUTION: A valve body A is formed on a valve body 1 in which a normal flow path 1a and a control flow path 1b are formed in a cross section perpendicular to a horizontal central axis of a bottomed cylindrical body, and a bottom wall outer surface 1c of the valve body 1. It consists of a rotating shaft 2 that protrudes and a water control piece 3 that is provided on one side of the control flow path 1b. The flow rate control valve B is provided with a water inlet 4d at the top and a water outlet 4e at the bottom. The bottomed cylindrical casing 4 provided, the valve body A inserted into the water flow chamber 4f between the water inlet 4d and the water outlet 4e, and the casing 4 by being externally fitted to the rotating shaft 2 of the valve body A A valve retainer 5 fitted into the peripheral surface and screwed to the flange 4g of the casing 4 and a screw 5 is engaged with the rotary shaft 2 to rotate the valve main body 1 and have a rotation angle of 90 ° with respect to the valve retainer 5. A handle 6 positioned at the rotation end, a nut 7 for joining the casing 4 to the faucet of the faucet, and a foamy water flow are discharged. It comprises a discharge fitting 8.
[Selection] Figure 4

Description

  The present invention relates to a valve body in which flow paths are arranged in a cross shape within the same cross section, and a flow rate control valve capable of instantaneously switching the flow path by rotation of the valve body using the valve body.

The present applicant has proposed a flow control valve that can cope with various flow control by one water control piece joined to the mouth end of the faucet in Japanese Patent Application Laid-Open No. 2006-77404 (Patent Document 1). Although the technique of the patent document 1 can achieve its purpose in flow control on water saving for general households, both normal water discharge using a large amount of water and flow control water discharge whose flow rate is restricted as required are required. There was a problem that it was unsuitable in the field of kitchen and medical hygiene facilities.
JP 2006-77404 A

  The present invention provides a valve body in which normal water discharge and flow rate control water discharge by a water control piece are instantaneously switched and used, and a flow control valve using the valve body.

The valve body according to claim 1 of the present invention includes a pair of normal flow paths and control flow paths in which the respective axis centers are arranged in a cross shape in a cross-section perpendicular to the horizontal central axis of the horizontally oriented bottomed cylindrical body. A valve body formed on the bottom wall outer surface of one end of the valve body along the horizontal central axis, and one of the control flow paths on the inner surface side of the valve body. A cone seat recessed concentrically with the channel, a large-diameter control channel in which the other of the control channels is slightly larger in diameter than the outer diameter of the seat, and a water control system installed in the seat A water control board having a butterfly wing symmetrically on the diameter passing through the center of the control flow path, and a board surface that is superimposed on the water control board and exposed between the butterfly wings. It consists of a water flow board that opens a required number of water flow holes with a required shape in a point-symmetric manner at the center.
In the flow rate control valve according to claim 2, the fitting fitting joined to the mouth end of the faucet is screwed to the water inlet of the casing, and the discharge fitting is screwed to the water outlet, between the water inlet and the water outlet. In the flow control valve comprising a valve body in the water flow chamber formed in the flow passage and adjusting the flow rate, the discharge fitting is provided with a net-like flow rate relaxation body,
The valve body is composed of the valve body according to claim 1, wherein a handle positioned at a rotation end of 90 ° from an arbitrary position is attached to a rotation shaft of the valve body, and normal water discharge from a normal flow path is performed. The flow rate control water discharge from the control flow path is obtained by switching.

  The valve body of the present invention is composed of an injection molded body of synthetic resin and a water control piece by metal processing, so that the manufacturing cost is low, and the flow control valve using the valve body is made of synthetic resin from the casing to the main member. Similarly, the manufacturing cost is low. Furthermore, normal water discharge and flow control water discharge by the water control piece can be switched instantaneously by rotating the handle by 90 °, and the flow control can be made variously by the water control piece.

  The main members of the valve body and the flow control valve of the present invention are made of an injection molded body made of synthetic resin, and the engagement between the rotary shaft of the valve body and the shaft portion of the handle corresponds to a reduced diameter portion having a two-surface width. From the engagement hole to the engagement, from the engagement of the square shaft and the spline shaft. Furthermore, since the normal flow path and the control flow path of the valve body are arranged orthogonal to each other, it is only necessary to align the handle lever (positioning end) in each direction with respect to each flow path. The relationship between the stopper provided on the valve presser and the protrusion provided on the shaft portion of the handle may not be aligned with the position of the lever if there is a 90 ° rotation restriction.

In describing the present invention by way of examples, the configuration of the present invention will be schematically described. The valve body A in FIG. 1, the water control piece 3 in FIG. 2, the flow control valve B in FIG. 5 and a handle 6.
If it demonstrates from the valve body A according to said order, the valve body A will be comprised as follows. That is, the valve body 1 is formed by a pair of normal flow paths 1a and control flow paths 1b in which the respective axes are crossed in a cross-section in a cross section perpendicular to the horizontal central axis of the horizontally oriented bottomed cylindrical body. A rotating shaft 2 projecting along the horizontal central axis on the bottom wall outer surface 1c at the right end of the valve body 1, and a seat provided on the inner surface of the valve body 1 at one (downward) of the control flow path 1b. It consists of a piece 1e that is recessed in 1d concentrically with the control channel 1b, and a water control piece 3 that is installed in the piece 1e in a press-fit state.
The other (upper) of the control channel 1b is a large-diameter control channel through which the water control piece 3 can be inserted, and the rotary shaft 2 has an O-ring groove 2a for fitting an O-ring (described later) for maintaining watertightness. The shaft end is provided with a reduced diameter portion 2b having a reduced two-surface width for engaging a handle (described later), and a screw hole 2c screwed around the shaft center.

  As shown in FIG. 2, the water control piece 3 is exposed to the outside of the water control board 3a provided with the butterfly blade 3aa symmetrically on the diameter passing through the center of the control flow path 1b, and the butterfly blade 3aa superimposed on the water control board 3a. A water flow board 3b having a water passage hole 3ba having a diameter through which six (12 in total) reference flow rates can pass in a point-symmetric manner in the center of the board surface. In both cases, a required number of water holes 3ba are opened outside the butterfly blades 3aa by adjusting screws 3bc screwed into the screw seats 3bb of the water flow board 3b.

  The flow control valve B is configured as follows. That is, as shown in FIG. 3, the casing 4 is a cylindrical body having an opening 4a on the right and a ring-shaped bearing 4c projecting on the inner surface of the left blocking wall 4b. The water outlet 4e is arranged in the lower part, and the valve body A is inserted into the water passage 4f formed between the water inlet 4d and the water outlet 4e from the opening 4a. Then, the inner periphery of the left end portion of the valve body 1 of the valve body A is fitted on the bearing portion 4c.

  A valve presser 5 is mounted on the rotating shaft 2 of the inserted valve body A as follows. That is, the fitting hole 5 a at the center of the valve retainer 5 is fitted on the rotary shaft 2, the shaft portion 5 b of the valve retainer 5 is fitted on the inner periphery of the casing 4, and the flange 5 c is screwed into the flange 4 g of the casing 4. The water-tightness between the rotating shaft 2 and the fitting hole 5a of the valve retainer 5 is maintained by an O-ring 2d fitted with an O-ring groove 2a provided around the outer periphery of the rotating shaft 2. . The watertightness between the inner periphery of the right end portion of the casing 4 and the shaft portion 5b of the valve presser 5 is maintained by an O-ring 5f fitted in an O-ring groove 5e provided around the outer periphery of the shaft portion 5b.

Positioning and joining of the valve presser 5 and the casing 4 is performed by fitting a projection 4h protruding below the flange 4g of the casing 4 into a groove 5g cut out below the flange 5c of the valve presser 5. At this time, as shown in FIG. 7, the stopper 5 h is disposed in a point-symmetric manner in the 90 ° range with respect to the axial center on the outer side of the inner surface of the valve presser 5. And since the reduced diameter part 2b diameter-reduced to the width | variety of two surfaces is arrange | positioned in the direction along the any one flow path 1a or 1b of the valve body 1 at the axial end of the rotating shaft 2, the reduced diameter part is provided. A handle 6 having a shaft portion 6a that fits externally on 2b rotates by screwing a screw 6d into a screw hole 2c of the rotary shaft 2 through a screw hole 6c that is opened in a recess 6b that is recessed in the center of the outer surface. It is securely joined to the shaft 2. A cap 6e is fitted into the recess 6b to make the outer surface smart.
The protrusion 6f protruding above and below the shaft 6a is constrained by the stopper 5h, and the rotation posture of the handle 6 is restricted within an angle of 90 °, and at the rotating end against the water inlet 4d and the water outlet 4e of the casing 4 Thus, one of the normal flow path 1a and the control flow path 1b of the valve body A is communicated.

  A filter 7a is fitted in the water inlet 4d together with a rubber seal packing 7b, and a nut 7 screwed on the outer periphery of the water inlet 4d is fitted in a faucet (not shown) of the faucet through the packing 7c. The discharge fitting 8 is fastened to the outlet 7e, and a reticulated flow rate reducing body 8b is provided inside the packing 8a.

In the embodiment, as shown in FIGS. 5 and 6, the flow control valve B has a water control state when the lever 6 g integrated with the handle 6 is in a horizontal position, and the water inlet 4 d and the water outlet 4 e are the control flow path 1 b of the valve body A. Communicated with The normal flow path 1a of the valve body A is communicated with the water inlet 4d and the water outlet 4e of the casing 4 at the vertical position where the lever 6g is rotated 90 ° clockwise as indicated by the phantom line from the horizontal position.
The water control piece 3 in the control flow path 1b is a piece seat in a state where the lever 6g of the handle 6 is in a horizontal position and the seat 1d disposed on the inner peripheral surface of the valve body 1 of the valve body A is directed downward. The state fitted in 1e is best because water is controlled on the water outlet 4e side.

  According to the flow rate control valve B of the present invention, the normal flow path 1a and the control flow path 1b are instantaneously switched by the lever 6g of the handle 6, so that it is extremely useful for saving water for kitchens and medical-related sanitary facilities. It is.

  To adjust the flow rate in the control flow path 1b, remove the cap 6e at the center from the handle 6, loosen the screw 6d, remove the handle 6 from the rotary shaft 2, and then remove the screw 5d from the flange 5c of the valve retainer 5 to rotate the rotary shaft. 2 and the valve holder 5 are removed from the casing 4, and the valve body A is pulled out from the casing 4. Then, a hexagon wrench (not shown) is inserted from the large diameter control channel (upper control channel 1b), the adjustment screw 3bc is loosened, the water control panel 3a is turned, and the water hole 3ba exposed outside the butterfly wing 3aa. The flow rate can be easily adjusted by adjusting the number and adjusting the screw 3bc. The valve body A is housed in the casing 4 in the reverse procedure.

As described above, the flow control valve B of the present invention is provided as assembled as shown in FIG. 4, and the faucet (not shown) of the faucet is connected to the nut 7 screwed into the water inlet 4d via the packing 7c. The adapter 7d is fastened through the filter 7a and the seal packing 7b, and is used for saving water by switching between normal water discharge and flow rate control water discharge by the water control piece 3. The discharge fitting 8 screwed into the water outlet 4e discharges a soft, foamy water flow by a net-like flow rate relaxation body 8b attached inside via a packing 8a.
The handle 6 is also provided with an elliptical cross section without the lever 6g.

  Since the main member of the valve body and the flow rate control valve of the present invention suffices with an injection-molded body made of synthetic resin, it can contribute to the injection molding industry and the mold industry. Since it is extremely useful for saving water at sites where water is used, there is a great demand for it in terms of kitchens and medical-related sanitary facilities in the service industry.

Explanatory drawing by the principal part longitudinal cross-section of the valve body A of this invention. The top view of the water control piece 3. FIG. The disassembled cross-sectional perspective view of the flow control valve B of the present invention. The assembly longitudinal cross-sectional view of the flow control valve B same as the above. The right view of FIG. AA arrow sectional drawing of FIG. BB arrow sectional drawing of FIG.

Explanation of symbols

1: Valve body 1a: Normal flow path 1b: Control flow path 1c: Bottom wall outer surface 1d: Seat base 1e: Block base 2: Rotating shaft 2a: O-ring groove 2b: Reduced diameter part 2c: Screw hole 2d: O-ring 3 : Water control piece 3a: Water control panel 3aa: Butterfly blade 3b: Water flow panel 3ba: Water flow hole 3bb: Screw seat 3bc: Adjustment screw 4: Casing 4a: Opening part 4b: Blocking wall 4c: Bearing part 4d: Water inlet 4e: Water outlet 4f: Water flow chamber 4g: Flange 4h: Protrusion 5: Bubble retainer 5a: Fitting hole 5b: Shaft 5c: Flange 5d: Screw 5e: O-ring groove 5f: O-ring 5g: Groove 5h: Stopper 6: Handle 6a: Shaft 6b: Recess 6c: Screw hole 6d: Screw 6e: Cap 6f: Projection 6g: Lever 7a: Nut 7a: Filter 7b: Seal packing 7c: Packing 7d: Adapter 8: Discharge fitting 8a: Packing 8b: Flow rate reduction Body A: Valve body B: Flow control valve

Claims (2)

  A valve body in which each pair of normal flow paths and control flow paths are formed in a cross shape in a cross-section perpendicular to the horizontal central axis of the horizontally oriented bottomed cylindrical body, and the bottom of the valve main body A rotary shaft projecting along the horizontal central axis on the outer wall surface, a piece seat concentrically recessed with the control flow channel on the inner surface side of the valve body on one side of the control flow channel, and a control flow channel On the other hand, it consists of a large-diameter control channel that is slightly larger in diameter than the outer diameter of the piece seat and a water control piece installed in the piece seat, and the water control piece passes through the center of the control channel. A valve comprising a water control board provided with butterfly wings symmetrically on the diameter, and a water flow board having a water flow hole opened in a point-symmetric manner in the center of the board surface superimposed on the water control board and exposed between the butterfly wings body. A fitting fitting to be joined to the end of the faucet is screwed to the water inlet of the casing, and a discharge fitting is screwed to the water outlet, and a valve body is placed in the water flow chamber formed between the water inlet and the water outlet. In the flow rate control valve in which the flow rate is adjusted by providing a net-like flow rate relaxation body in the discharge fitting,
The valve body is composed of the valve body according to claim 1, and a handle positioned at a rotation end of 90 ° is pivotally attached to a rotation shaft of the valve body. A flow rate control valve characterized in that control water discharge from the road is obtained by switching.

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