JPH0833314B2 - Day viewer - Google Patents

Description

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a distributor capable of quantitatively distributing a pressurized fluid to discharge holes provided at appropriate intervals in the circumferential direction.

2. Description of the Related Art One of the fields of application of such distributors is an apparatus for producing a water-swelling gel-like crosslinked polymer. Conventionally, a water-swelling gel-like cross-linked polymer is filled with a heated polymerization tube through a pressurized aqueous solution containing a polymerizable monomer and a catalyst, where it is temporarily retained and polymerized, and then extruded with a newly fed pressurized aqueous solution, and an outlet is provided. It is manufactured by cutting the water-swelling gel-like crosslinked polymer extruded into a rod shape into pellets, but the polymerization equipment is complicated because each polymerization tube requires a pump to supply the raw material aqueous solution. It was a thing. As a measure to simplify the polymerization equipment, it is conceivable to install multiple polymerization tubes in parallel, but for that purpose it is necessary to provide multiple branch tubes, and this method requires uniform pressure of the raw material aqueous solution in each polymerization tube. Therefore, the formation of a water-swelling gel-like crosslinked polymer is not uniform and inappropriate. In addition, in the case of distribution using a normal valve, the structure of the valve causes the liquid to stay, and cross-linking polymerization occurs at the staying site to easily cause clogging, which makes it difficult to perform stable continuous operation for a long time. , I hate that the structure becomes complicated.

DISCLOSURE OF THE INVENTION Problems to be Solved by the Invention An object of the present invention is to provide a distributor having a simple structure capable of quantitatively distributing a pressurized fluid to a plurality of discharge holes provided at appropriate intervals in the circumferential direction.

Means for Solving the Problems According to the present invention, therefore, a cylindrical body and a shaft body that is rotatably fitted to the cylindrical body and is rotationally driven by a drive source are provided, and fluid is supplied to the shaft body. While the shaft hole and the lead-out hole formed in the radial direction from the shaft hole are provided, radial discharge holes are formed in the cylindrical body at appropriate intervals in the circumferential direction, and moreover, are constant in the circumferential direction. A groove having a length is formed on the outer peripheral surface of the shaft body, and a lead-out hole opens in the groove, and a discharge hole of the cylinder body opens in the same circumferential circle as the groove, and the groove is rotated by the rotation of the shaft body. The discharge holes are sequentially communicated with each other, or the grooves are formed on the circumferential surface of the cylinder at appropriate intervals in the circumferential direction so that the discharge holes open in the grooves and the lead-out holes of the shaft body are the same as those described above. It opens on the same circumference as the grooves, and the rotation of the shaft allows the outlet holes to communicate with each groove in sequence. A distributor is provided which is characterized by the following.

It is desirable that at least one sliding contact surface of the cylindrical body and the shaft body be subjected to, for example, Teflon processing to reduce the coefficient of friction so that the shaft body can be smoothly rotated.

A typical example of the drive source is a motor.

Each discharge hole formed in the cylindrical body can be communicated with a groove formed in the shaft body, or if each discharge hole is opened in each groove formed in the cylindrical body. The discharge holes may be axially offset or may have irregular circumferential spacing, but are preferably radially formed so that the extension of each discharge hole coincides with the center or contacts the inner circle. It

The discharge holes can also be formed in one or more rows in the axial direction. That is, the introduction holes are provided in the axial direction at one or a plurality of appropriate intervals. When a plurality of introduction holes are provided, one shaft hole is provided, or a plurality of shaft holes are provided and one or more introduction holes are provided in each shaft hole.

The length of the groove is usually formed so as not to communicate with two adjacent discharge holes, but depending on the application, the groove is formed to have a length so as to communicate with a plurality of discharge holes. In this case, a fixed amount of pressurized fluid can be simultaneously supplied to the plurality of discharge holes.

When the groove is formed in the tubular body, the width in the axial direction may be constant or irregular if the length is constant.

The distributor according to the present invention can be used not only by incorporating it into the above-described apparatus for producing a water-swelling gel-like crosslinked polymer, but also in various other fields, such as bottles,
It can be used in a food manufacturing device for filling and filling bags, tubes and the like. Therefore, an aqueous solution, a fluid viscous fluid, or the like is used as the pressurized fluid depending on the application.

Example 1 A distributor, which is generally denoted by reference numeral 1, mainly includes a cylindrical body 2 and a shaft body 5 which is rotatably fitted in the cylindrical body and is rotationally driven by a motor 3 through a speed reducer 4. These will be described in detail below.

The cylindrical body 2 has a shaft hole 7 formed as a stepped hole composed of a small diameter portion 7a and a large diameter portion 7b. The large diameter portion 7b has a hole diameter at one end that is the same as the small diameter portion 7a and gradually decreases toward the other end. A sleeve 9 having a tapered shaft hole 8 is fitted, and the sleeve 9 is fixed to a cover 12 attached to one end of the tubular body 2 by a pin 11 projecting axially from the sleeve 9. In the cover 12, a circular groove 14 is formed inside and a drain 15 communicating with the circular groove 14 is formed, and the drain 15 is always closed by a plug 16. The shaft body 5 has a stepped shaft 19 protruding from a cover 18 which is inserted into the other end of the cylinder body 2 and has a tapered shape of which one side is the same as the shaft hole 8 and which is fixed to the other end of the cylinder body 2. The attached urging mechanism 21 urges the sleeve 9 to the right in the drawing and presses it against the sleeve 9, thereby restricting axial movement and positioning at a predetermined position. They are connected by a sleeve joint 20.

The urging mechanism 21 is fitted and inserted into the stepped shaft 19 and the cover 18
A flange-shaped unit 23 slidably supported by a bolt 22 fixed to the stepped shaft 19, which is wedge-coupled to the stepped shaft 19;
The coil spring 24 is wound around the shaft portion between the unit 23 and the nut 25 and biases the unit 23 to the right in the figure. The shaft action 5 is pressed against the sleeve 9 by the wedge action as described above. There is.

The shaft body is also internally blind at one end, and has three shaft holes 27 with a plug 26 fixed to the opening at the other end, and each shaft hole 27 is connected to the main body portion of the shaft body and one side of the shaft body. Has a branch-shaped introduction hole 28 and a derivation hole 29 that extend in the same radial direction in the tapered portion of each of the introduction holes 28, each introduction hole 28 in the annular groove 30 formed in the circumferential direction of the shaft outer peripheral surface, The lead-out hole 29 is also opened in a groove 31 of a constant length formed in the circumferential direction of the outer peripheral surface of the shaft body.
The length of 31 is formed to be shorter than the pitch of the discharge hole inlet, which will be described later, so that one outlet hole does not communicate with two discharge holes at the same time. In the figure, 32 is a sleeper seal, 33
Is attached to cover 18, biasing mechanism 21 and sleeve joint
It is a box that encloses 20, and a speed reducer 4 is attached to one side thereof.

The cylindrical body 2 also has a circumferential groove on the small diameter portion 7a side.
Three supply holes communicating with 30 and in different directions
The discharge holes 35 are provided on the side of the large-diameter portion 7b on the same plane as the lead-out holes 29 and are formed radially through the sleeve 9. Each discharge hole has three rows in the axial direction, and each lead-out hole 29. It is provided corresponding to, and the direction is slightly shifted in each row. The reason why the directions of the supply holes are shifted in the circumferential direction and the directions of the discharge holes are shifted in the circumferential direction in each row is to facilitate the mounting of the supply pipe attached to the supply hole and the discharge pipe attached to the discharge hole. is there.

This device is configured as described above, and the supply hole is passed through the supply pipe.
The pressurized fluid introduced into 34 once enters the annular groove 30, and then flows into the shaft hole 27 through the introduction hole 28. Then, it is fed into the groove 31 through the outlet hole 29, and discharged from the discharge pipe through the discharge hole 35 communicating with the groove. The discharge to one discharge hole 35 is such that one end of the groove 31 reaches the inlet of the discharge hole 35 as the shaft 5 driven by the motor 3 rotates and the groove 31 and the discharge hole 35 start communicating with each other. This is performed until the end reaches the entrance of the discharge hole 35, and after reaching the groove end, it stops. When one end of the groove 31 reaches the inlet of the next discharge hole 35, discharge to the next discharge hole 35 is started, and thereafter, discharge to each discharge hole is successively performed in the rotation direction. In addition, as described above, in this device, the supply hole,
Since three sets of shaft holes, discharge holes, etc. are provided, the above-mentioned pressurized fluid is distributed to each set.

Here, while the groove 31 communicates with the discharge hole 35, the flow rate of the pressurized fluid passing through the discharge hole changes depending on the size of the groove 31 and the rotation speed of the shaft 5 as well as the pressure and deceleration of itself. In other words, the pressure and flow velocity of the pressurized fluid are constant, the lengths of the grooves 31 arranged on the same circumference are constant, and the shaft 5
If the rotation speed of is constant, the pressurized fluid can be sent in a fixed amount to each discharge hole. It should be noted that the pressure of the pressurized fluid does not change during distribution if the pressure in the shaft hole is constant, so that the pressurized fluid of a constant pressure can be sent to each discharge hole.

In the above embodiment, the supply path for the pressurized fluid is provided for each shaft hole, but it is also possible to supply the pressurized fluid to each shaft hole at the same time. For example, in the illustrated device, plugs 16 and 26
And the drain 15 is used as the supply pipe. in this case,
The supply hole 34, the annular groove 30, the introduction hole 28, the sleeper seal 32, and the portion other than the tapered portion of the shaft body 5 can be omitted altogether, and the structure can be simplified.

FIG. 3 shows an example of use of the distributor shown in the above embodiment, that is, an example in which the distributor 1 is incorporated in the above-mentioned water swelling gel crosslinked polymer production apparatus, and each discharge connected to the discharge hole 35. The pipes 38 are respectively connected to superposition pipes (not shown) arranged side by side in the jacket 37, and three supply pipes 39 connected to the respective supply holes 34 are connected to a feed pump 40, and the feed pump 40 is put in a tank 41. Strainer for pressurized aqueous solution of polymerizable monomer and catalyst
It is supplied to the distributor 1 via 42. As described above, the pressurized aqueous solution supplied to the distributor 1 is successively filled in the polymerization tubes as the shaft 5 driven by the motor 3 rotates. The aqueous solution with which the polymerization tube is filled is heated with warm water injected into the jacket 37 to carry out a polymerization reaction to become a water-swelling crosslinked polymer. Then, the shaft 5 is extruded with the pressurized aqueous solution that is newly discharged when the shaft 5 makes one rotation. The extruded water-swelling crosslinked polymer is cut into pellets by a cutter 45 that is driven to rotate by a motor 44 immediately after extrusion.

As described above, the distributor of the present invention includes the tubular body and the shaft body that is rotationally driven in the tubular body, and the shaft body has the shaft hole and the lead-out hole formed in the radial direction from the hole. On the other hand, a plurality of radial discharge holes are formed in the cylindrical body, and either one of the outer peripheral surface of the shaft body and the peripheral surface of the cylindrical body has a constant length in the circumferential direction, and a discharge hole or each discharge hole is formed. A groove that opens a hole is provided so that as the shaft rotates, the outlet hole communicates sequentially with the discharge hole through a groove of a fixed length.The shaft is continuously rotated at a constant speed for one rotation. Each time, the pressurized fluid can be distributed quantitatively to each discharge hole, and the distribution amount of the pressurized fluid can be easily changed by changing the rotation speed of the shaft body. According to the method, a plurality of shaft holes are formed in the shaft body and / or an axial position is set in the shaft holes. It is possible to provide a plurality of outlet holes by shifting the positions and to form a plurality of discharge holes formed in the cylindrical body in correspondence with each outlet hole, and to facilitate distribution to a large number of discharge holes. The distributor of the present invention is basically provided with a shaft body having a shaft hole and a lead-out hole, a drive source for rotationally driving the shaft body, and a cylinder body having a discharge hole. Since it suffices to provide a groove, it has an effect such as a simple structure.

[Brief description of drawings]

FIG. 1 is a sectional view of a distributor according to the present invention, FIG. 2 is a sectional view taken along the line AA of FIG. 1, and FIG. 3 is a water-swelling gel-like crosslinked polymer production apparatus equipped with the distributor according to the present invention. FIG. 1 ... Distributor, 2 ... Cylindrical body 3 ... Motor, 5 ... Shaft body, 7 ... Shaft hole 9 ... Sleeve, 12, 18 ... Cover, 27 ... Shaft hole 28 ... Introduction hole, 29 …… Leading hole, 30 …… annular groove 31 …… groove, 34 …… Supply hole, 35 …… Discharge hole

Claims (1)

[Claims] 1. A shaft body comprising a cylindrical body and a shaft body rotatably fitted to the cylindrical body and driven to rotate by a drive source. A shaft hole to which fluid is supplied to the shaft body, and the shaft hole. While a guide hole formed in the radial direction is provided, radial discharge holes are formed in the cylindrical body at appropriate intervals in the circumferential direction, and a groove having a constant length in the circumferential direction is formed in the shaft body. The outlet hole formed in the outer peripheral surface opens in the groove, the discharge hole of the cylindrical body opens in the same circumferential circle as the groove, and the groove is communicated with each discharge hole sequentially by the rotation of the shaft. Or the grooves are formed on the circumferential surface of the cylinder at appropriate intervals in the circumferential direction so that each discharge hole opens in each groove and the lead-out hole of the shaft opens in the same circumference as the groove. The distributor is characterized in that the lead-out hole is made to communicate with each groove sequentially by the rotation of the shaft body.