JP3071291U - Double strainer device - Google Patents

Abstract

(57) [Summary] [Problem] To improve the compactness and ease of use of a dual trainer. SOLUTION: A plurality of strainers A ₁ and A ₂ having a filter 6 therein are arranged, and their respective inlet pipes 2 and 2 are connected to a stock solution supply pipe 10 a via a butterfly valve 12, and likewise each outlet pipe 3. , 3 are connected via a butterfly valve 12 to a filtrate outlet pipe 10b. Then, the butterfly valves 12, 12 connected to the inflow pipes 2, 2 and the butterfly valves 12, 12 connected to the outflow pipes 3, 3 are linked so that when one is open, the other is closed. Means 15, 16, 18, 19 are provided.

Description

[Detailed description of the invention]

[0001]

[Industrial applications]

 The present invention relates to a multiple strainer device having a plurality of strainers, which can be switched and used, and more particularly to a multiple strainer device which switches using a butterfly valve or a ball valve.

[0002]

[Prior art]

 If the strainer is used for a long time, foreign matter will adhere to the filter and the pressure loss will increase, so it is necessary to clean the filter from time to time. In such a case, since the filtration operation is temporarily suspended, not only the operation efficiency is reduced, but also the process before and after the filtration is considerably affected. Therefore, on a relatively small scale, two strainers are connected using a three-way valve or a cock, etc., and while using one of the strainers for their operation, cleaning and cleaning of the other strainer are performed. Double strainer devices have been used that allow for maintenance.

[0003]

[Problems to be solved by the invention]

 However, since the conventional dual strainer device switches the strainer to be used with an expensive three-way valve, the cost of the entire device is high, and when the pipe diameter is 8 inches or more, it is difficult to manufacture the large strainer device. Is considered unsuitable. In addition, there is no equipment that can be switched by a cock, even for large-diameter pipes, and the sealing performance is low.

[0004] In view of the recent demand for a more compact strainer device and a larger capacity, the present invention provides a butterfly as a switching valve in place of a three-way valve or cock that is not suitable for large-diameter piping. By using a valve or ball valve, it is possible to increase the size of the device and to manufacture it with a simple structure and at a low cost. It is.

[0005]

[Means for Solving the Problems]

The structure of the present invention for achieving the above object will be described with reference to the accompanying drawings. The device of claim 1 includes a filter 1 in a case 1 and a liquid inflow pipe 2 and a liquid outflow pipe. A plurality of strainers A ₁ , A ₂ provided with pipes 3 are arranged, and the respective inlet pipes 2, 2 are connected to a stock solution supply pipe 10 a via a butterfly valve 12, and the respective outlet pipes 3, 3 are connected. Is connected to the filtrate withdrawing pipe 10b through the butterfly valve 12, and the butterfly valves 12, 12 connected to the inflow pipes 2, 2 and the butterfly valves 12, 12 connected to the outflow pipes 3, 3 are connected to each other. In addition, there is provided a means for interlocking so that one of them is open and the other is closed.

[0006] The device according to claim 2 is characterized in that, in the device according to claim 1, interlocking means for opening and closing the butterfly valves 12 connected to the inflow pipe 2 and the outflow pipe 3 together is provided. It is assumed that.

A third aspect of the present invention is the apparatus according to the first or second aspect, wherein a ball valve 30 is used instead of the butterfly valve 12.

[0008]

[Embodiment of the invention]

 Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 6 show an embodiment of a first apparatus using a butterfly valve, and FIGS. 7 and 8 show embodiments of a second apparatus using a ball valve.

First, an embodiment of the first device will be described. In FIGS. 1 and 2, A ₁ and A ₂ are a plurality of strainers arranged, respectively. An inflow pipe 2 is connected to an upper part of a cylindrical case 1 and an outflow pipe 3 is connected to a lower part thereof. The cover is closed by a lid plate 4 provided detachably via a flange, and the lower end is closed by a bottom plate 5. A cylindrical filter 6 is accommodated between the connecting position of the inflow pipe 2 and the outflow pipe 3 which is the upper and lower middle part of the case 1. , And is filtered by the filter 6, and the filtrate is taken out from the outlet pipe 3.

[0010] Reference numeral 10a denotes a supply pipe for a T-type undiluted solution, and 10b denotes a pipe for taking out a T-type filtrate. Butterfly valves 12 are respectively mounted on the opposed branch pipes 11 and 11, respectively. supply tube 10a both strainer _a 1 via a butterfly valve 12, 12 is connected to the inlet pipe 2,2 _{a 2,} also removing tube 10b both strainer _a 1 via a butterfly valve 12, 12, a ₂ are connected to the outflow pipes 3 and 3.

A worm gear 15 is provided on a portion of the rotary shaft 14 of the valve body 13 of each of the butterfly valves 12 protruding from the valve box. A worm 16 meshing with the worm gear 15 is not shown in the drawing. It is supported and provided at an appropriate place such as a valve box. A handle 17 and a chain wheel 18 for rotating the worm 16 are attached to a rotation shaft of the worm 16. The two worms 16, 16 are connected by the chain 19 in a state where one of the butterfly valves 12, 12 connected to the inflow pipes 2, 2 and the outflow pipes 3, 3 is opened and the other is closed. At the same time, they are linked so as to rotate in the same direction, and by operating the handle 17, when one of the butterfly valves 12, 12 is open, the other is closed.

The apparatus of the present invention is configured as described above, and the filtration is performed by two strainers A. ₁ , A₂This is done using one of the two. For example, as shown, one strainer A₁When using the strainer, operate the handle 17 to₁The butterfly valve 12 connected to the inlet pipe 2 is opened. Thereby, the other strainer A₂The butterfly valve 12 connected to the inflow pipe 2 is closed by transmission by the chain wheels 18 and 18 and the chain 19. Strainer A₁, A₂Similarly, the butterfly valves 12 and 12 connected to the outflow pipes 3 and 3 of the strainer A₁One butterfly valve 12 on the side is opened and the other butterfly valve 12 is closed.

Therefore, if the stock solution is supplied from the supply pipe 10a, the liquid passes through the opened butterfly valve 12 and flows into only _one strainer A1. The inflowing liquid is filtered through the filter 6, and the filtrate passes through the butterfly valve 12 opened from the outflow pipe 3 and flows out of the extraction pipe 10 b. In this case, the other of the inlet pipe 2 and outlet pipe butterfly valve 12, 12 connected to the third strainer A ₂ is closed, since the strainer A ₂ becomes unused state, cleaning, repair and the like as appropriate You can do it.

When the use of the strainer A ₁ progresses and it becomes necessary to perform cleaning or repair, the handles 17, 17 are operated to operate the supply-side and discharge-side butterfly valves 12, which have been opened so far. , by closing the 12, in conjunction with this will be bus Tafurai valve 12, 12 connected towards the other strainer a ₂ is opened, filtered working with the other strainer a ₂ is started, whereas towards strainer a ₁ of it becomes an unused state, so that can be performed during cleaning and repair. In this way, by opening and closing the butterfly valves 12 and 12 by operating the handles 17 and 17, either of the strainers A ₁ and A ₂ can be switched and used. It can be done continuously without any.

In the above-described embodiment, the pair of butterfly valves 12, 12 mounted on the supply pipe 10a and the extraction pipe 10b can be opened and closed by the handle 17, but this operation is performed by other appropriate manual operation. Means can be used, and means such as electric power, hydraulic pressure, and air pressure can be used. The operating means using the handle 17 or the like may be provided on only one side. Further, the interlocking mechanism for switching the two butterfly valves 12, 12 is not limited to the chain wheel 18 and the chain 19, and may be replaced with other conventionally known means.

FIGS. 3 to 6 show another embodiment of the interlocking mechanism for switching the opening and closing of the butterfly valves 12 and 12. In the embodiment shown in FIGS. 3 and 4, the butterfly valves 12, 12 connected to the supply pipe 10a and the butterfly valves 12, 12 connected to the extraction pipe 10b are further linked. In this case, for example, as shown in the figure, chain wheels 20, 20 are further added to the shafts of the worms 16, 16 provided on the butterfly valves 12, 12 on the supply side and the discharge side, and the chain wheels 20, 20 are added. 20 is linked by chain 21. Thereby, by operating one of the handles 17, the opening and closing of all the butterfly valves 12, 12 can be simultaneously performed.

The embodiments of FIGS. 5 and 6 are slightly different from the embodiments of FIGS. This embodiment is different from the first embodiment in that the rotary shafts 14, 14 of the butterfly valves 12, 12 on the supply side and the discharge side are projected to face each other. In this way, the chain wheels 21 provided on the supply side and the take-out side come close to each other, and the chain 19 to be engaged can be short, so that the apparatus can be made compact and the interlocking accuracy can be improved. . 3 to 6, the opening / closing interlocking mechanism of the butterfly valves 12, 12 can be replaced with other appropriate means such as manual, electric, hydraulic, and air pressure.

Next, the second device will be described. This device uses a ball valve 30 instead of the butterfly valve 12 in the first device, as shown in FIGS. As is conventionally known, the ball valve 30 is provided with a ball-shaped valve element 31 having a flow hole 32, and the flow of the fluid is blocked and performed according to the rotational position of the valve element 31. . In the case of this device as well, in the same manner as in the first device, a worm gear 15 is provided at a portion of the rotary shaft 32 of the valve body 31 protruding from the valve box. Wheel and chain 19 are provided. Also, in the case of the second device, the embodiment of the first device shown in FIGS. 3 to 6 can be applied.

[0019]

[Effect of the invention]

 As described above, the apparatus of the present invention uses a plurality of (two) strainers, and connects each of the inflow pipes and outflow pipes of the strainers via the butterfly valve or the ball valve to supply or filter the stock solution. Since the valves are connected to the liquid discharge pipe and the opening and closing of these valves are linked, the following excellent effects are achieved.

(1) When one of a plurality of strainers is used, the plurality of strainers can be switched and used so that the other is in a halt state. Therefore, even when cleaning or repair of the strainer is required, the operation is not stopped. The filtration operation can be performed continuously.

(2) Since a butterfly valve or a ball valve which can be formed to be thin in the axial direction is adopted as a switching valve for switching and using the strainer, the apparatus can be made compact and compared with a conventional valve. The structure is simple and inexpensive, and the cost of the entire apparatus can be reduced. In particular, when a wafer type butterfly valve is used, the apparatus can be made more compact.

(3) Conventionally used three-way valves can be applied only to those having a small pipe diameter, but butterfly valves or ball valves are also suitable for large-diameter pipes. Medium and large scale double strainer devices can be realized.

(4) Since the butterfly valve or the ball valve connected to each of the inflow pipe and the outflow pipe is provided in conjunction with each other so that one of the valves is open and the other is closed, the strainer to be used is switched. Can be easily performed with one touch, and operability is remarkably improved.

[Brief description of the drawings]

FIG. 1 is a partially cut-away side view showing one embodiment of a first device.

FIG. 2 is a plan view of the same.

FIG. 3 is a side view of a main part showing another embodiment.

FIG. 4 is a plan view of the main part.

FIG. 5 is a side view of a main part showing still another embodiment.

FIG. 6 is a front sectional view of the essential part.

FIG. 7 is a partially cutaway side view showing an embodiment of the second device.

FIG. 8 is a plan view of the same.

[Explanation of symbols]

A ₁ , A ₂ strainer 1 case 2 inflow pipe 3 outflow pipe 6 filter 10 a supply pipe 10 b extraction pipe 12 butterfly valve 13 valve body 14 rotating shaft 15 worm gear 16 worm 17 handle 18, 20 chainwheel 19, 21 chain 30 ball valve 31 Valve 32 Flow hole

Claims (3)

[Utility model registration claims] 1. A case in which a filter is provided and a plurality of strainers each having an inflow pipe and an outflow pipe for liquid are arranged, and each of these inflow pipes is connected to a supply pipe of the undiluted solution via a butterfly valve. The outlet pipe is connected to the filtrate take-out pipe via a butterfly valve, and the butterfly valves connected to each inlet pipe and the butterfly valves connected to each outlet pipe are connected, and when one is open, the other is closed. A double trainer device characterized in that a means for interlocking is provided. 2. The double strainer device according to claim 1, further comprising interlocking means for opening and closing both butterfly valves connected to the inflow pipe and the outflow pipe. 3. The double strainer device according to claim 1, wherein a ball valve is used in place of the butterfly valve.