JPH08312820A - Rotary type filling valve - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a filling valve which has a simple structure and high measuring accuracy, and which can prevent deterioration of a transfer liquid and damage of a solid content. [Structure] A casing 3 that constitutes a valve chamber 2, a rotating body 5 that constitutes a cylinder chamber 4 and is arranged in the casing 3 so as to rotate along the inner circumference of the valve chamber 2, and reciprocates in the cylinder chamber 4. A rotary type filling valve is configured with a free shuttle type piston 8, a transfer liquid (potato salad, etc.) S is supplied by a pump P (a), and the piston 8 is pushed down by the pressure from the pump P and the inside of the cylinder chamber 4 is pushed. The transfer liquid S is sent to the (b), the rotator 5 is rotated 180 degrees, and the pump P is again rotated.
The transfer liquid S is supplied by (c), and the piston 8 is pushed down, at which time the transfer liquid S previously sent into the cylinder chamber 4 is sent out (d).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary type filling valve for quantitatively transferring and filling a liquid or a semi-liquid substance.

[0002]

2. Description of the Related Art A rotary type filling valve for transferring a semi-liquid substance containing ingredients such as potato salad by a fixed amount to fill a container or the like has been conventionally known. FIG. 4 is an explanatory view of the structure and operation of a conventional rotary type filling valve.

The rotary type filling valve shown in FIG. 4 is formed by connecting a valve casing b to one end of a measuring cylinder a. An inlet c and an outlet d are provided on two sides of the valve casing b, and a rotary switching valve e is used. Inlet c in cylinder a
Side, and the outlet d side can be switched to open, the inlet a side is opened, and the piston f is moved backward to move the transfer liquid (liquid) into the cylinder a as indicated by an arrow in FIG. (Or semi-liquid material), and then exit d
The side is opened, the piston f is moved forward, and the transfer liquid is sent out as shown by the arrow in FIG. 4 (b).

[0004]

In the case of the conventional rotary filling valve described above, when the switching valve e rotates to close the inlet c side, the edge of the switching valve e cuts the transfer liquid, and the outlet d side is closed. The transfer liquid is cut twice for each fixed amount transfer such that the edge of the same switching valve e cuts the transfer liquid when closing. Therefore, the quality may deteriorate depending on the type of transfer liquid,
In particular, if the transfer liquid is potato salad and contains solid materials such as cabbage, carrots, and bean sprouts as ingredients, those ingredients will be cut even twice during quantitative transfer, and damage will occur. There was a problem that the product became large and the productability deteriorated.

The present invention is intended to solve such a problem, and provides a filling valve which has a simple structure and high metering accuracy, and which can prevent deterioration of the transfer liquid and damage of the solid content. The purpose is to

[0006]

The present invention provides a rotary type filling valve for solving the above-mentioned problems.
The rotary type filling valve has a casing that forms a valve chamber having a circular cross section and has an inlet and an outlet at positions that face each other in the radial direction, and is arranged rotatably along the circumference of the valve chamber of the casing. And a outlet forming a cylinder chamber capable of communicating with the outlet at the same time, rotating means for rotating the rotating body by about 180 degrees so that the cylinder chamber communicates with the inlet and the outlet, and a rotating body forming the cylinder chamber. And a shuttle type piston that can reciprocate in the cylinder axial direction in the cylinder chamber.

In the present invention, the rotary filling valve preferably has both end surfaces of the piston as curved surfaces conforming to the shape of the outer peripheral surface of the rotating body, and rotation restricting means for preventing relative rotation of the piston in the cylinder chamber. Shall be provided.

The rotation restricting means is, for example, a flat key that is fixed to the inner surface of the cylinder and has a partially flat inner surface in the cylinder axial direction, and a part of the outer peripheral surface of the piston corresponding to the flat key. It is configured with a cutout portion cut out in a plane shape.

In the rotary type filling valve of the present invention, it is preferable that a stopper is provided on the casing side to prevent the piston from moving toward at least the outlet side of the valve chamber.

Further, in order to make it possible to adjust the transfer amount (filling amount) per time, for example, the piston is constituted by two piston members and a length adjusting screw connecting the piston members.

[0011]

In the rotary type filling valve of the present invention, the valve chamber inlet of the casing is connected to the discharge port of a separately provided pump. Then, when the transfer liquid is supplied by the pump at a position where one end of the cylinder chamber communicates with the inlet side, the piston moves to the outlet side in the cylinder chamber by the pressure from the pump, and the transfer liquid is sent into the cylinder chamber. Then, the rotating body rotates 180 degrees from that position, and the transfer liquid is supplied again by the pump at a position where the other end of the cylinder chamber communicates with the inlet side.
By doing so, the stone moves again to the outlet side due to the pressure from the pump, and the transfer liquid is sent into the cylinder chamber. At that time, the previously sent transfer liquid is sent out from the outlet and filled in the specified container. To be done.

Further, when both end surfaces of the piston are formed into curved surfaces conforming to the outer peripheral surface shape of the rotating body and rotation restricting means for preventing relative rotation of the piston in the cylinder chamber is provided, the cylinder chamber has inlet and outlet sides. When the liquid is shut off from the side, the transfer liquid breaks better, and as a result, the inner surface of the casing is prevented from being contaminated by the residual liquid, and the transfer amount (filling amount) is stabilized. The rotation restricting means is, for example, a flat key fixed to the inner surface of the cylinder to make the inner surface of the cylinder partly planar along the cylinder axis direction, and a part of the outer peripheral surface of the piston cut into a partly flat surface corresponding to the flat key. It consists of a simple mechanism consisting of a notch.

Further, the stopper provided on the casing side prevents movement of the piston toward at least the outlet side of the valve chamber, thereby enabling smooth operation of the rotary filling valve and transfer of a fixed amount. Becomes

Further, for example, in the case where the piston is composed of two piston members and a length adjusting screw connecting them, the length adjusting screw adjusts the transfer amount (filling amount) per time. Is possible.

[0015]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a vertical sectional view of a rotary filling valve according to an embodiment of the present invention when viewed from the front, and FIG. 2 is a vertical sectional view of the rotary filling valve when viewed from the side.

The rotary filling valve 1 of this embodiment comprises a casing 3 forming a valve chamber 2 having a circular cross section, and a cylinder chamber 4 penetrating in the radial direction, and is rotatable along the inner circumference of the valve chamber 2. A short cylindrical rotating body 5 arranged in the casing 3.
And a pneumatic rotary actuator 7 mounted on the casing 3 via a mounting plate 6 and drivingly connected to the rotating body 5, and incorporated in the rotating body 5 to be reciprocally movable in the cylinder axial direction in the cylinder chamber 4. The shuttle-type piston 8 constitutes a main part.

The casing 3 is made of stainless steel,
Positions of the valve chamber 2 that face each other in the radial direction (see FIGS. 1 and 2).
(Upper and lower positions in FIG. 2) are provided with an opening 9 forming an inlet and an opening 10 forming an outlet of the valve chamber 2, and a flange portion 11 for connecting the opening 9 on the inlet side to a pipe on the pump discharge side. Is equipped with. Further, the casing 3 is one in which one end side in the axial direction of the valve chamber 2 is opened, and a flange portion 12 is provided at the open end. The mounting plate 6 is mounted by the clamp 13.

A sleeve 14 with a blade is closely fitted to the inner peripheral surface of the valve chamber 2 formed by the casing 3. The bladed sleeve 13 is provided on the inlet side opening 9 of the casing 3.
And peripheral surface openings 15 and 16 at positions corresponding to the outlet side opening 10. These peripheral openings 15 and 16 of the bladed sleeve 14 are slightly smaller than the openings 9 and 10 of the casing 3, respectively, and are of a size that slightly narrows the openings 9 and 10 of the casing 3 from the four sides so that they do not shift in position. It is bolted to the casing 3. In addition, the opening 15 on the inlet side of the bladed sleeve 14
The front and rear end edges in the circumferential direction are formed in the shape of a cutting edge as shown in FIG.

The rotating body 5 is made of brass and is arranged so as to rotate while making sliding contact with the inner periphery of the bladed sleeve 14, and the cylinder chamber 4 that penetrates the rotating body 5 in the radial direction is
The circumferential surface opening 15 of the bladed sleeve 14 every rotation of 180 degrees
And 16 through which the inlets 9 and 10 on the inlet side and the outlet side of the casing 3 are simultaneously communicated. In addition, a boss portion 17 extends in the axial direction from the center of one end surface of the rotating body 5. An actuator shaft 18 of the rotary actuator 7 is connected to the boss portion 17. The outlet-side peripheral surface opening 16 of the bladed sleeve 14 is such that when the cylinder chamber 4 that radially penetrates the rotating body 5 communicates with the outlet-side opening 10 of the casing 3, front and rear edges are in the cylinder chamber 4.
The portion that slightly covers the cylinder chamber 4 and that covers the cylinder chamber 4 constitutes a stopper that prevents the piston 8 from protruding toward the outlet side.

In the rotary actuator 7, the actuator shaft 18 is inserted into the central through hole 19 of the mounting plate 6 and is fixed to the mounting plate 6 by the hexagon socket head cap bolt 20. Then, the actuator shaft 18 is inserted into the boss portion 17 of the rotating body 5, and the mounting plate 6 is attached so as to be keyed.
The whole casing is mounted on the flange portion 12 of the casing 3 and clamped.

The piston 8 is made of nylon and has two piston members 21 and 22 having the same shape, and a single length adjusting screw 23.
It has been connected in. Two piston members 21,2
2, the front end surface is a curved surface that matches the outer peripheral surface of the rotating body 5, and O-rings 24 and 25 are provided on the outer peripheral surfaces, respectively.

The rotary body 5 has a flat key 2 so that the inner surface of the cylinder chamber 4 is partially flat along the cylinder axis direction.
6 is mounted. Further, both piston members 21, 22 of the piston 8 are provided with notches 27 corresponding to the flat keys 26, the outer peripheral surfaces of which are partially flat. The flat key 26 and the cutout portion 27 constitute a rotation restricting means for preventing relative rotation of the piston 8 in the cylinder chamber 4.

FIG. 3 is a diagram for explaining the operation of the rotary type filling valve 1. In FIG. 3, P is a pump, H is a hopper on the pump inlet side, and E is a pipe on the pump discharge side. In this case, the rotary filling valve 1 is installed with the inlet side opening 9 of the casing 3 facing up and the outlet side opening 9 facing down, and the inlet side opening 9 is connected to the pump discharge side pipe E. . Then, the transfer liquid filling tray T is sequentially transported and positioned immediately below the outlet opening 10. The operation of the rotary filling valve 1 is as follows.

With one end of the cylinder chamber 4 communicating with the inlet side opening 9 and the tray T being positioned, the pump P is driven and the transfer liquid (potato salad etc.) S is supplied (see FIG. 3a). ).

The pressure from the pump P causes the piston 8 to move down to the outlet side opening 10 of the cylinder chamber 4, whereby the transfer liquid S is sent into the cylinder chamber 4. Then, when it is detected by the pressure gauge (not shown) attached to the pump P that the hydraulic pressure of the transferred transfer liquid exceeds the specified value, the pump P is stopped (see b in FIG. 3).

When the pump P is stopped, it is driven by the rotary actuator 7 to rotate the rotating body 5 by 180 degrees, and at the position where the other end of the cylinder chamber 4 communicates with the inlet side opening 9, the transfer liquid S is again pumped by the pump P. Are supplied (see c in FIG. 3).

The pressure from the pump P causes the piston 8 to move down to the outlet side opening 10 again.
The transfer liquid S sent in is sent out from the outlet side opening 10 and is filled in the tray T (see d in FIG. 3).

The pump P is stopped, the rotary actuator 7 is driven again, and the rotating body 5 rotates 180 degrees in the direction opposite to the previous direction. This completes one filling operation. Hereinafter, the transfer liquid S can be sequentially filled in a new tray by repeating the operations of to.

The timing of stopping the pump P and rotating the rotary body 5 can be set by a timer.

In the above embodiment, the length adjusting screw 23
By adjusting the length of the piston 8, the transfer amount (filling amount) per time can be adjusted. The transfer amount (filling amount) can be adjusted by adjusting the dimension between the piston members by the number of plate-shaped spacers, or by replacing the adjusting screws with different lengths and using them.

The rotary type filling valve of the present invention can be widely applied to transfer filling of various semi-liquid substances or liquids such as potato salad. Further, this rotary filling valve may be installed, for example, with the inlet side and the outlet side lying sideways.

[0033]

According to the rotary type filling valve of the present invention,
After the transfer liquid is sent into the cylinder chamber, when the rotating body starts rotating, the transfer liquid is cut off between the casing and the rotating body at the inlet side opening, but the transfer liquid is cut off during one fixed amount transfer. The number of times to be used is only once, and it is possible to reduce the deterioration of the transfer liquid and the damage to the solid contents contained in it compared with the case where the transfer liquid is cut twice for each fixed amount transfer like the conventional rotary filling valve. You can Moreover, since it is a volumetric type, the accuracy of the transfer amount (filling amount) is good, the structure is simple, and the number of parts is small.

[Brief description of drawings]

FIG. 1 is a vertical sectional view of a rotary filling valve according to an embodiment of the present invention when viewed from the front.

FIG. 2 is a vertical cross-sectional view as seen from a side of a rotary filling valve according to an embodiment of the present invention.

FIG. 3 is an operation explanatory view of the rotary type filling valve according to the embodiment of the present invention.

FIG. 4 is an explanatory view of a conventional rotary type filling valve.

[Explanation of symbols]

 1 Rotary Fill Valve 2 Valve Chamber 3 Casing 4 Cylinder Chamber 5 Rotating Body 7 Rotary Actuator 8 Piston 9 Opening (Inlet Side) 10 Opening (Outlet Side) 21,22 Piston Member 23 Length Adjusting Screw 26 Flat Key 27 Notch

Claims (5)

[Claims] 1. A casing forming a valve chamber having an inlet and an outlet at positions opposed to each other in the radial direction, the casing having a circular cross section,
Arranged rotatably along the circumference of the valve chamber of the casing,
A rotating body that forms a cylinder chamber that can communicate with the inlet and the outlet at the same time; rotating means that rotates the rotating body by about 180 degrees so that the cylinder chamber communicates with the inlet and the outlet; A rotary-type filling valve, which is arranged in a cylinder chamber that constitutes the same and is composed of a shuttle-type piston that can reciprocate in the cylinder axis direction in the cylinder chamber. 2. The rotary according to claim 1, wherein both end surfaces of said piston are curved surfaces conforming to the shape of the outer peripheral surface of said rotating body, and rotation regulating means for preventing relative rotation of said piston in said cylinder chamber is provided. Mold filling valve. 3. A flat key fixed to the inner surface of the cylinder to make the rotation restricting means partly flat along the cylinder axial direction, and a piston outer peripheral surface corresponding to the flat key. 3. The rotary type filling valve according to claim 2, wherein the rotary type filling valve is configured by a notch part that is partially cut out in a planar shape. 4. The rotary filling valve according to claim 1, wherein a stopper for preventing the piston from moving toward at least the valve chamber outlet side is provided on the casing side. 5. The rotary type filling valve according to claim 1, 2, 3, or 4, wherein the piston is composed of two piston members and a length adjusting screw connecting the piston members.