JPH0635743U - Double ball valve - Google Patents

Abstract

(57) [Summary] [Purpose] A multiple ball valve that can operate multiple ball valves in conjunction. [Structure] A plurality of sets of ball valves 11 each having a spherical valve body 13 rotatably arranged inside a valve box 12 are provided, and the plurality of spherical valve bodies 13, 13 are arranged on the same rotation axis and are interlocked. The valve boxes 12 and 12 are connected in series as described above. In addition, the plurality of spherical valve bodies 13, 13 may be connected to one valve driving tool 19.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improved ball valve.

[0002]

[Prior art]

 BACKGROUND ART Conventionally, some facilities equipped with a piping system use a plurality of ball valves and operate the ball valves simultaneously. An example of this equipment is a bubble bath with a filtering device shown in FIG. The bubble bath with a filter device includes a bath body 1, a jet port 2 and a suction port 3 that open inside the bath body 1, a pump 4 that circulates the hot water in the bath body 1, and one of the circulating hot water. It is provided with a filter 5 for filtering the parts and three types of ball valves 6, 7 for switching the flow path of the piping system 8.

The piping system 8 includes a piping 8 a that connects the discharge port 4 a of the pump 4 and the injection port 2, and a pipe connection that connects the discharge port 4 a of the pump 4 and the inflow port 5 a of the filter 5 via a ball valve 6. A pipe 8b, a pipe 8c connecting the inlet 4b of the pump 4 and the suction port 3, a pipe 8d connecting the inlet 4b of the pump 4 and the outlet 5b of the filter 5 via a ball valve 7, and a ball valve The pipe 8e for back washing connects the pipe 8d and the pipe 8b via the pipe 7, and the pipe 8f for draining the back washing extended from the ball valve 6.

The ball valves 6 and 7 are respectively provided with servo motors 9 and 9 which are valve driving tools, and are simultaneously operated by the servo motors 9 and 9. The ball valves 6 and 7 are operated at the same time to switch the flow path state of the piping system 8 so that hot water flows in the filter 5 from the inflow port 5a to the discharge port 5b or the inside of the filter 5 is discharged. A backwash operation state is performed in which hot water flows from the outlet 5b to the inlet 5a.

[0005] In addition to the above equipment, there is also equipment having a piping system in which a plurality of ball valves are simultaneously manually operated.

[0006]

[Problems to be solved by the device]

 However, it is wasteful to provide a valve driving tool for each of a plurality of ball valves that operate valves at the same time because the number of valve driving tools increases. Furthermore, in the case of having a plurality of ball valves to be manually operated, the valve operation is troublesome because the valve operation is performed a plurality of times, and the valve operation may be mistaken.

In order to solve the above problems, an object of the present invention is to provide a multiple ball valve capable of operating a plurality of ball valves in conjunction with each other.

[0008]

[Means for Solving the Problems]

 The means adopted by the present invention comprises a plurality of sets of ball valves in which a spherical valve body is rotatably arranged inside a valve box, and the plurality of spherical valve bodies are arranged on the same rotation axis. It is a multi-ball valve characterized by being connected so as to be linked. It should be noted that a valve box may be provided for each of the spherical valve bodies and a plurality of valve boxes may be connected in series, or the plurality of spherical valve bodies may be connected to a single valve drive tool.

[0009]

[Action]

 Since the plurality of spherical valve bodies are arranged on the same axis of rotation and linked so as to interlock with each other, the valves can be operated simultaneously by one operation. When a plurality of spherical valve bodies are connected to a single valve drive tool, the single valve drive tool can simultaneously operate the plurality of spherical valve bodies.

[0010]

【Example】

 Hereinafter, a multi-ball valve according to the present invention (hereinafter, referred to as “the valve of the present invention”) will be described based on the embodiments shown in FIGS. 1 to 3. 1 is a front sectional view, FIG. 2 is a side sectional view, and FIG. 3 is a front sectional view showing a state after switching from the state of FIG.

The multi-ball valve 10 according to the present embodiment is provided with two sets of ball valves 11 and 11 at the top and bottom. Each ball valve 11 includes a valve box 12 and a spherical valve element 13 rotatably arranged inside the valve box 12. The valve box 12 is provided with three water channels 14, 15 and 16, and the extension lines of these water channels 14, 15 and 16 intersect in a T-shape when viewed in a plan view. Valve seats 17 are attached to the open ends 14a, 15a, 16a of the water channels 14, 15, 16, respectively.

The upper and lower valve boxes 12 and 12 are joined and integrated by an intermediate connector 18. The valve box 12 and the intermediate connector 18 are joined by screwing a female screw of the valve box 12 and a male screw of the intermediate connector 18 or a flange of the valve box 12 (not shown) and a flange of the intermediate connector 18. It is performed by an appropriate joining means such as a screw stop. In the upper valve box 12, a connecting portion 20 of a servo motor 19 which is a valve driving tool is joined to the upper opening 12a by an appropriate joining means such as screwing or screwing. The lower valve box 12 has a lower opening 12b covered with a lid 21.

The spherical valve body 13 is provided with a plane L-shaped passage 25. The upper and lower spherical valve bodies 13, 13 are arranged on the same rotation axis and are connected by a connecting tool 22 so as to interlock with each other. The connecting tool 22 is axially supported by the intermediate connecting tool 18, and upper and lower corner-shaped connecting portions 22a and 22b are inserted into the corner connecting holes 13a and 13a of the spherical valve bodies 13 and 13, respectively. The O-seal rings 23, 23 are fitted to the connector 22, and the edges of the upper and lower valve boxes 12, 12 on the flow paths are cut off. In the upper spherical valve body 13, the angular connecting portion 24a of the output shaft 24 of the servomotor 19 is inserted into the angular connecting hole 13a at the upper end. The O seal rings 23, 23 are fitted to the output shaft 24.

In the multi-ball valve 10, when the connected spherical valve bodies 13 and 13 are rotated by the servomotor 19, the water passages 14 and 16 of the valve boxes 12 are connected to the passages 25 as shown in FIGS. 1 and 2. 3 or the water channels 15 and 16 of each valve box 12 are communicated with each other through the passage 25 as shown in FIG.

FIG. 4 shows a bubble bath with a filtering device using the double ball valve 10 and schematically shows the double ball valve 10. This bubble bath with a filtering device is the same as the bubble bath with a filtering device shown in FIG. 5 except that the three types of ball valves 6 and 7 are replaced with a double ball valve 10, and the other components are shown in FIG. And the same reference numeral indicates the same component. 4A shows the filtration operation state, and FIG. 4B shows the backwashing state.

In the above-described embodiment, the upper and lower valve boxes 12 and 12 are formed as separate bodies, and both are connected by the intermediate connector 18. However, the valve of the present invention is not limited to this, and although not shown, a plurality of valve boxes may be integrally formed.

Further, the valve of the present invention is not limited to the double ball valve 10 of the three types, and can be modified as follows. That is, each ball valve 11 has two types, three types and two types of ball valves 11 are combined, three or more sets of ball valves 11 are connected, and the connected spherical valve bodies 13, 13 are manually operated. For example, to enable the turning operation.

[0018]

[Effect of device]

 As described in detail above, the valve of the present invention has the following practical effects. A plurality of spherical valve bodies can be operated simultaneously by one operation. As a result, the proposed valve can be easily operated without making a mistake in valve operation. A single valve drive can simultaneously operate a plurality of spherical valve bodies. As a result, the proposed valve requires only one valve drive and is economical. A plurality of valve boxes can be installed in close proximity to each other. As a result, the proposed valve can be made compact as a whole.

[Brief description of drawings]

FIG. 1 is a front sectional view showing an embodiment of a multi-ball valve according to the present invention.

FIG. 2 is a side sectional view of the same embodiment.

FIG. 3 is a front sectional view showing a state after switching from the state of FIG.

FIG. 4 is a system diagram showing a bubble bath with a filtering device using a multi-ball valve according to the present invention, in which (A) shows a filtering operation state and (B) shows a back washing state.

FIG. 5 is a system diagram showing a bubble bath with a filtering device using a conventional ball valve.

[Explanation of symbols]

 11 ... Ball valve 12 ... Valve box 13 ... Spherical valve body 19 ... Valve drive tool

Claims (3)

[Scope of utility model registration request] 1. A plurality of sets of ball valves in which a spherical valve element is rotatably arranged inside a valve box are provided, and the plurality of spherical valve elements are arranged on the same axis of rotation and connected so as to interlock with each other. A multi-ball valve characterized by the above. 2. The double ball valve according to claim 1, wherein a valve box is provided for each of the spherical valve bodies, and a plurality of valve boxes are connected in series. 3. The double ball valve according to claim 1, wherein the plurality of spherical valve bodies are connected to one valve driving tool.