JP4123317B2 - Butterfly valve device - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a butterfly valve device including a circular butterfly valve for controlling the amount of fluid such as powder or particles in a case main body formed of a ring-shaped surrounding wall.
[0002]
[Prior art]
Conventionally, a hopper is connected to the top of the opening of a container such as a drum can that contains fluids such as powders, granules, and liquids such as food and medicine, and a butterfly valve device is connected to the tip of the hopper, and this is reversed. The flow of the contents is controlled by rotating the butterfly valve.
FIG. 7 shows an example of a butterfly valve device, a case main body 51 formed of a ring-shaped surrounding wall, and a disk that is pivotally supported by the case main body and controls the passage of powder, particles, and liquid fluid. The butterfly valve 52 is provided, and the flow amount of the contents is controlled by the rotation operation of the butterfly valve. The disc-shaped butterfly valve 52 has a plug shaft 53 coupled to one side, and a long operating stem shaft 55 in a sleeve 54 supported by a bearing 55 coupled firmly to the other. These shafts hold the case body 51.
[0003]
[Problems to be solved by the invention]
In factories, etc., handling a variety of foods and chemicals, the same type of raw material may share the butterfly valve device. In that case, the heavy butterfly valve device can be removed from the hopper and assembled. The raw material adhering to the butterfly valve must be cleaned. For this reason, when the cleaning operation is difficult and the attached residue cannot be completely removed, there is a possibility that the quality is deteriorated due to the mixing of the foreign material.
Therefore, in order to reliably prevent these contaminations, it is sufficient to prepare a large number of dedicated butterfly valve devices for each different raw material. However, if this is done, there is a problem that the equipment cost increases and the cost increases. there were.
Therefore, in order to facilitate cleaning or cleaning work, it may be possible to remove the heavy butterfly valve device and disassemble the butterfly valve body and other parts, but considerable skill is required for disassembly and assembly. In addition to the need for tools such as a screwdriver and a wrench, when small parts such as screws and bolts remain in the butterfly valve device, they are mixed as foreign matter in the raw material, and an unexpected situation occurs. There was a problem.
[0004]
The present invention has been made in order to solve the above-described problem. The butterfly valve is detachable from the case main body without using a tool, and is a lightweight butterfly that can be easily disassembled into thin parts. The object is to provide a valve device.
[0005]
The present invention includes a case main body 1 composed of a ring-shaped wall having ferrules at both ends, and a circular butterfly valve 2 pivotally supported by the case main body and intermittently passing a fluid such as powder or particles. In the provided butterfly valve device, as a circular butterfly valve, there are a disc-shaped butterfly valve 2 main body and a packing-like elastic ring 3 which is fitted in a concave groove 2a on the outer periphery thereof and can be brought into sliding contact with the inner surface 1a of the case main body. And a pair of ferrule bearings 4 and 5 located on the outer side of the case body 1 and a pair of valve rods 6 and 7 supported by being inserted and fitted from the outside. A thin flat portion 2b having the same thickness as the elastic ring 3 and matching the tip shape of the valve stem and a notch space portion 2c are formed outside the butterfly valve 2 main body. The aforementioned valve rod 6 tip, and the thin flat portions 2b, and the elastic ring 3a located at the cutout space 2c, closely sandwiched possible slits 6a, 7a are formed, the valve rod 6, A lower step portion is provided on the outer periphery of the step 7, and the lower step portion has a sleeve 8 made of a sliding synthetic resin such as Teflon ( registered trademark ) in order to eliminate the step and improve sliding without lubrication. The blind ferrule 9 is located outside the one ferrule bearing 4, and the operating ferrule 10 is located outside the other ferrule bearing 5, and these two sets of adjacent ferrules 4, 9, 5, and 10 are respectively connected by a clamp 21, and an operating body 20 that transmits a rotating operation to the valve rod 7 that penetrates the operating side ferrule 10 is detachably fitted. .
[0006]
The working body 20 of the present invention, opening and closing the lock guide 33 is rotated by the operation of opening and closing the handle 38, or, you being a accurate Ju mediator.
[0007]
DETAILED DESCRIPTION OF THE INVENTION
1A and 1B relate to a butterfly valve device excluding a clamp according to an embodiment of the present invention. FIG. 1A is a partially longitudinal side view, and FIG. FIG. 2 relates to a butterfly valve device equipped with a clamp according to an embodiment of the present invention, where (A) is a side view and (B) is a plan view. Further, FIG. 4 shows the relationship between the valve and the valve stem. (A) is a longitudinal side view, and (B) is a plan view. In the figure, 1 is a case main body, 2 is a butterfly valve, and a packing-like elastic ring 3 is detachably fitted in an outer circumferential groove 2a and is in sliding contact with the inner surface 1a of the case main body. Reference numerals 4 and 5 denote a pair of ferrule bearings, which are located outside the through-hole 1 b in the symmetrical position of the case body 1 and fixed to the case body 1. 6 and 7 are a pair of valve rods that are inserted and supported from the outside of the ferrule bearing.
As shown in FIG. 4, the butterfly valve 2 has a half-moon shaped thin flat portion 2b having the same thickness as the elastic ring 3 and matching the tip shape of the valve stem, and a notch space portion 2c on the outer side thereof. Slit portions 6a and 7a are formed at the tips of the valve stems 6 and 7 so that the thin flat portion 2b and the elastic ring 3a positioned in the notch space portion 2c can be tightly sandwiched. Reference numeral 8 denotes a Teflon ( registered trademark ) sheath that is fitted to the lower stepped portion of the outer periphery of the valve stems 6 and 7, thereby eliminating the step and improving lubrication without lubrication. 9 is a blind ferrule that faces the flange of the ferrule bearing 4 and prevents the end face of the valve stem 6 from jumping out. Reference numeral 10 denotes an operating ferrule, which faces the flange of the ferrule bearing 5 and has a valve rod 7 passing through the center thereof.
[0008]
Reference numeral 21 in FIG. 2 denotes a clamp, which serves to couple two adjacent ferrules 4, 9 and 5, 10 together. 3A and 3B show the clamp 21 in detail. FIG. 3A is a perspective view in a tightened state, and FIG. 3B is a perspective view in a relaxed state. The main body of the clamp 21 is divided into an upper ring 22 and a lower ring 23, and one end of the upper ring 22 and one end of the lower ring 23 are connected to each other by a hinge 24 so as to be opened and closed. A flange 25 having a slit 25a is projected, and a bracket 26 is projected from the other end of the lower ring 23. A pivot bolt 27 is pivotally supported at the center of the tip of the bracket 26 so as to be pivotable. The rotating bolt 27 can be inserted into the slit 25a by rotating 180 degrees, and the distance between the flange 25 and the bracket 26 can be reduced by tightening the wing nut 28 screwed into the rotating bolt 27. In addition, angled taper grooves 22a and 23a are formed on the inner surfaces of the upper ring 22 and the lower ring 23 so that the two adjacent ferrules 4, 9 and 5 and 10 can be securely held. .
[0009]
In FIG. 1, reference numeral 31 denotes a disc-shaped handle bracket that is integrally coupled to the outside of the operating side ferrule 10, with a valve rod 7 passing through the center and a fixing bolt 32 planted at a right angle on the upper outer side. An open / close lock guide 33 has a mounting boss 34 welded and fixed to the upper part, and a square hole 35 that can be fitted to the angular shaft 37 of the end of the valve stem 7 is formed at the center of rotation. Further, a fan-shaped guide groove 36 centering on the square hole 35 is formed, and is inserted into the fixing bolt 32 through which the Teflon spacer 42 has been inserted in advance. An open / close handle 38 is screwed to the mounting boss 34. By operating the open / close handle 8, the open / close lock guide 33 can be rotated about 90 degrees about the square hole 35, and a T-type lock screw is provided. The rotational position can be fixed by screwing and tightening 39 to the fixing bolt 32 via a washer 43. The butterfly valve 2 can be rotated by a predetermined angle through the valve rod 7 having the angular shaft 37 by the rotation of the square hole 35.
[0010]
FIG. 5 is an explanatory view of assembly and disassembly of the butterfly valve device of the present invention. In order to assemble this device, first, the elastic ring 3 is mounted in the concave groove of the butterfly valve 2, the sheath cylinders 8, 8 are fitted on the valve rods 6, 7, and then these are mounted on the ferrule bearings 4 on both sides of the case body 1. , 5 are inserted from the outside, and are further fitted into the elastic ring 3a and the thin flat portion 2b located in the notch space portion 2c of the butterfly valve 2 positioned in the case body 1. Next, the blind ferrule 9 is overlapped with the ferrule bearing 4 with the bearing gasket 41 interposed therebetween and fixed by a clamp 21 (not shown). Similarly, with the bearing gasket 41 being sandwiched between the ferrule bearing 5, the operating side ferrule 10 integrated with the disc-shaped handle bracket 31 is overlapped and fixed by a clamp 21 (not shown). Next, the fan-shaped guide groove 36 of the open / close lock guide 33 to which the open / close handle 38 is screwed is inserted into the fixing bolt 32 through which the Teflon spacer 42 has been inserted in advance, and at the same time the square hole 35 is fitted into the square shaft 37, Finally, the T-type lock screw 39 is screwed onto the fixing bolt 32 via the washer 43 to complete the assembly. To disassemble this device, the opposite procedure can be followed.
[0011]
FIG. 6 shows an example of utilization of the butterfly valve device of the present invention. A hopper 46 is connected to the top of the opening of the drum container 45 containing fluid such as powder, granules, liquid, etc., and the case body 1 of the butterfly valve device is overlaid on the tip of the hopper 46 and connected by a clamp (not shown). On the other hand, the flow amount of the contents can be controlled by the rotation operation of the butterfly valve.
[0012]
In the above embodiment, the sleeve 8 made of a sliding synthetic resin such as Teflon is fitted to the lower step portion of the outer periphery of the valve stems 6 and 7 so that the step is eliminated. The surface may be coated with a slidable synthetic resin such as Teflon without providing a low step portion.
[0013]
In the above embodiment, the tips of the valve stems 6 and 7 and the thin flat portion 2b of the butterfly valve 2 main body are semicircular, but they may be square, and in short, both have the same shape and the same size. I just need it. In this way, no raw material or the like remains in the gap.
[0014]
In the above embodiment, the clamp as shown in FIG. 3 is used, but another structure may be used as the clamp. However, it is preferable that each part cannot be separated. In this way, it is possible to prevent the falling parts from being mixed into the raw material by mistake.
[0015]
In the above embodiment, the opening / closing lock guide 33 that is rotated by the operation of the opening / closing handle 38 is used as the operating body 20 that transmits the rotation operation to the valve rod 7 penetrating the operating side ferrule 10. Also good.
[0016]
【The invention's effect】
Since the present invention is configured as described above, the following effects can be obtained.
[0017]
On the left and right sides of the butterfly valve 2 main body, a thin flat portion 2b having the same thickness as the elastic ring 3 and matching the tip shape of the valve stem and a notch space portion 2c are formed outside the valve stem. 6 and 7 are formed with slit portions 6a and 7a capable of tightly sandwiching the thin flat portion 2b and the elastic ring 3a located in the notch space portion 2c. Since the valve stems 6 and 7 are tightly coupled with a single touch without gaps, the sealing performance at the time of shielding is good, the raw materials are not clogged and remain, and assembly and disassembly operations can be performed quickly. I can do it.
[0018]
A blind ferrule 9 is located outside the one ferrule bearing 4 and an operating ferrule 10 is located outside the other ferrule bearing 5, and these two sets of adjacent ferrules 4, 9 and 5, 10 are by being coupled by respective clamps 2 1, without a skilled person not only can be rapidly performed by hand without the use of tools an exploded operations, are mixed as foreign matters into a narrow part of the raw material It is possible to prevent unexpected situations from occurring.
[0019]
The valve stems 6 and 7 are fitted with a sheath cylinder 8 made of a slidable synthetic resin such as Teflon on the lower step portion of the outer periphery thereof, and the rotational operation is lightly performed by eliminating the step. Thus, there is no fear that the lubricating oil will be mixed into the raw material.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a butterfly valve device excluding a clamp according to an embodiment of the present invention, in which (A) is a partially cutaway side view and (B) is a front view.
FIGS. 2A and 2B are explanatory views of a butterfly valve device equipped with a clamp according to an embodiment of the present invention, where FIG. 2A is a side view and FIG. 2B is a plan view.
3A and 3B are diagrams showing in detail a clamp 21 according to an embodiment of the present invention, where FIG. 3A is a perspective view in a tightened state, and FIG. 3B is a perspective view in a relaxed state.
4A and 4B show a relationship between a valve and a valve stem according to an embodiment of the present invention, in which FIG. 4A is a longitudinal side view, and FIG. 4B is a plan view.
FIG. 5 is an explanatory view of assembly and disassembly of the butterfly valve device of the present invention.
FIG. 6 is a side view showing an example of utilization of the butterfly valve device of the present invention.
FIG. 7 is a perspective view showing an example of a conventional butterfly valve device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Case main body 1a Case main body inner surface 2 Butterfly valve 2a Groove 2b Thin flat part 2c Notch space part 3 Elastic ring 3a Elastic ring 4a located in the notch space part 2c 6, 5 Ferrule bearing 6, 7 Valve rod 6a Slit part 7a Slit part 9 Blind ferrule 10 Actuating ferrule 20 Actuator 21 Clamp 22 Upper ring 23 Lower ring 22a Angle taper groove 23a Angle taper groove 24 Hinge 25 Flange 25a Slit 26 Bracket 27 Rotating bolt 28 Wing nut 31 Disc-shaped handle bracket 32 Fixing bolt 33 Open / close lock guide 34 Mounting boss 35 Square hole 36 Fan-shaped guide groove 37 Square shaft 38 Open / close handle 39 T-type lock screw 41 Gasket 42 Teflon spacer 43 Washer 45 Drum can container 46 Hopper 51 Case body 52 Butterfly valve 53 Plug 54 sleeve 55 stem shaft

Claims (2)

A butterfly provided with a case main body 1 composed of a ring-shaped wall having a ferrule at both ends, and a circular butterfly valve 2 pivotally supported by the case main body and intermittently passing a fluid such as powder or particles. In the valve device,
As a circular butterfly valve, a disc-shaped butterfly valve 2 main body, and a packing-like elastic ring 3 that fits into a concave groove 2a on the outer periphery of the disc-shaped butterfly inner surface 1a are provided.
The case body 1 is provided with a through-hole 1b in a symmetrical position, a pair of ferrule bearings 4 and 5 positioned on the outside thereof, and a pair of valve rods 6 and 7 supported by being inserted and fitted to the outside from the outside,
On the left and right sides of the butterfly valve 2 body, there are formed a thin flat portion 2b having the same thickness as the elastic ring 3 and matching the tip shape of the valve stem, and a notch space portion 2c on the outside thereof.
Slit portions 6a and 7a capable of tightly sandwiching the thin flat portion 2b and the elastic ring 3a located in the notch space portion 2c are formed at the tips of the valve stems 6 and 7,
On the outer periphery of the valve stems 6 and 7, a step low portion is provided,
In order to eliminate the step and improve slipping without lubrication, the lower step portion is fitted with a sheath tube 8 of a sliding synthetic resin such as Teflon ( registered trademark ) ,
A blind ferrule 9 is located outside the one ferrule bearing 4 and an operating ferrule 10 is located outside the other ferrule bearing 5, and these two sets of adjacent ferrules 4, 9 and 5, 10 are Each connected by a clamp 21,
A butterfly valve device , wherein an actuating body 20 for transmitting a rotating motion to a valve rod 7 penetrating the actuating side ferrule 10 is detachably fitted. The butterfly valve device according to claim 1 , wherein the operating body (20) is an open / close lock guide (33) rotated by an operation of an open / close handle (38) or an actuator .

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