JPH0710878Y2 - Screw dehydrator - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a twin-screw type screw dehydrator for separating juice and water from a water-containing cake.

[0002]

2. Description of the Related Art As a conventional example of a twin-screw type screw dehydrator, for example, a screw dehydrator disclosed in JP-A-2-255296 is known. There, a pair of screw shafts that are rotationally driven and a dehydration tube having an eyebrow cross section that covers the outer surfaces of these screw shafts squeeze and dehydrate the water-containing cake.

[0003]

In many cases, the conventional screw dewatering machine as described above is composed of a pair of dewatering cases in which a dewatering tube having an cocoon-shaped cross section is divided by a plane passing through the center of each tube axis. The joints of both dehydrating cases are fastened together with joint bolts and integrated, and then attached to the wall of the stationary machine with mounting bolts. Therefore, when cleaning the screw shaft and dehydration cylinder, it is necessary to remove a large number of joining bolts and mounting bolts to separate the dehydration case, and then reassemble after cleaning, which requires a lot of manpower and time for a series of operations. I needed it. Especially when squeezing the juice, it is necessary to clean it frequently to prevent spoilage.
Further, since it is necessary to clean each time the raw material cake is different, the cleaning work is a heavy burden. In order to counter the squeezing pressure, the dehydration cylinder is made of a thick stainless steel material, and the large weight of the dehydration cylinder is also a factor that increases the load of cleaning work and inspection work.

An object of the present invention is to allow a pair of dehydrating cases forming a dehydrating cylinder to swing and open like a bivalve shell, and to automatically open and close by a control cylinder to separate and reassemble the dehydrating cylinder. This is to speed up the cleaning process, and to easily and efficiently perform the cleaning and maintenance inspection of the squeezed part.

[0005]

According to the present invention, a charging case 2 is erected on one side of an upper part of a machine base 1 and an end plate 3 is erected on the other side thereof, and a cross section eyebrows is provided between the charging case 2 and the end plate 3. The pair of front and rear dehydration cases 7 forming the compression chamber 6 are arranged, and on the premise of a screw dehydrator in which a pair of upper and lower screw shafts 9 are arranged in the compression chamber 6, the lower part of the front and rear center of the dehydration case 7 The open / close shaft 24 is arranged in parallel with the screw shaft 9, each dehydration case 7 is joined to the front and rear to cover the outer surface of the screw shaft 9, and the outer surface of the screw shaft 9 is separated from each other in opposite directions. The open / close shaft 24 is swingably supported between the cleaning position to be opened and the operation cylinder 26 for opening / closing each dehydration case 7.
And the upper joint wall 2 of both dehydrating cases 7 in the operating position
It is a requirement that a plurality of clamps 27 for sandwiching and fixing one to the other are provided.

[0006] Specifically, a cylindrical shaft 29 that penetrates the case 2 in the left and right directions is rotatably supported at the bottom of the case 2.
Between the operation arm 32 fixed to the shaft end of the opening / closing shaft 24 projecting from the cylinder shaft 29 and the loading case 2, one end of the opening / closing shaft 24 is rotatably supported by the cylinder shaft 29, and the other end is rotatably supported by the end plate 3. , And the operation cylinders 33 fixed to the shaft ends of the cylinder shafts 29 and the loading case 2, respectively, and the operation cylinders 26 are arranged to open and close the dehydration case 7 and the cylinder shaft 29 on one side and the dehydration case 7 on the other side. Axis 24, each axis 2
Connected by interlocking arms 34 and 35 fixed to 4.29.
The clamp 27 is configured to include the operation cylinder 37 and the clamp claw 39 that is operated to move up and down by the operation shifter 37, and the upper concavity-shaped inclined walls 40 are formed in front of and behind the upper joint walls 21 of both dehydration cases 7. The clamp claw 39 is provided with an inverted V-shaped tightening groove 41 circumscribing the inclined wall 40.

[0007]

In operation, the pair of dewatering cases 7 are supported by the opening / closing shafts 24 to cover the outer surfaces of the upper and lower screw shafts 9, and the upper joint wall 21 is fixed by the clamp 27 so as not to be separated. When the clamp 27 is released and the operation cylinder 26 is operated, both dehydration cases 7 open and swing to the cleaning position, and the outer surface of the screw shaft 9 can be opened.
As described above, when the pair of dehydration cases 7 are supported by the opening / closing shaft 24 so as to be swingable back and forth and can be automatically opened / closed by the operation cylinder 26, attachment / detachment and positioning of the heavy weight dehydration case 7 can be performed.
Alternatively, the dehydration case 7 can be quickly opened and returned to the use posture without performing the bolt loosening operation. The opening / closing shaft 24 is arranged below the center in the front-rear direction of the dehydration case 7 by moving the swing center of the dehydration case 7 away from the screw shaft 9 to open all the outer surfaces of both shafts 9, and further This is because the entire inner surface is opened to facilitate cleaning.

A pair of screw shafts 9 and opening / closing shafts 25 are arranged in a vertical row with the charging case 2 and the end plate 3 as a support structure, and a dehydrating case is provided via the opening / closing shafts 24 and a cylindrical shaft 29 fitted onto the opening / closing shafts 24. The reason why the operation cylinder 26 opens and closes 7 is to prevent the opening / closing mechanism of the dehydration case 7 from becoming large and to make the entire apparatus compact.

[0009]

According to the present invention, the dehydrating case 7 divided into the front and rear is swingably opened and closed by the single opening / closing shaft 24 arranged below the dehydrating case 7, and both dehydrating cases 7 are automatically operated by the operation cylinder 26. It is designed to be opened or returned to the use posture. Further, the upper joint wall 21 is sandwiched and fixed in the front and rear by a plurality of clamps 27 provided above, so that both dehydration cases 7 can be fixedly held in the operating posture. Therefore, according to the screw dehydrator of the present invention, it is possible to quickly open and reassemble the dewatering case 7, which is a heavy body, without manpower, and to clean the screw shaft 9 and the inner surface of the dewatering case 7. And the inspection can be done easily and efficiently. Since the opening / closing shaft 24 is provided below the front-rear center of the dehydration case 7, it is possible to expose the entire inner surface of the dehydration case 7 and the entire outer surface of the screw shaft 9 in the open state, thereby completely cleaning the pressing portion. It can be done reliably and easily.

[0010]

1 to 6 show an embodiment of a screw dehydrator according to the present invention. In FIG. 2, reference numeral 1 is a machine base,
Reference numeral 2 denotes a loading case that is erected on one side of the machine base 1, and 3 is an end plate that is erected on the other side of the machine base 2. These members 1 to 3 and the charging case 2 and the end plate 3 are The upper frame 4 and the four frame bars 5 (see FIG. 4) fixed between the frames form a frame.

A pair of front and rear dehydrating cases 7 forming a compression chamber 6 having an eyebrow-shaped cross section are arranged between the charging case 2 and the end plate 3, and the charging case 2 and the compression chamber 6 are vertically crossed in a horizontal direction. A pair of screw shafts 9 are arranged in parallel. Both screw shafts 9 are cantilevered by a bearing unit 10 fixed to the charging case 2, and are driven in opposite directions by a driving mechanism including a geared motor 11 capable of shifting provided in the front part of the machine base 1. It Specifically, the power of the geared motor 11 is transmitted to the upper screw shaft 9 via the chain mechanism 12, and further transmitted to the lower screw shaft 9 via the pair of gears 13.

In FIG. 4, the screw shaft 9 is a core shaft 9a.
And a blade 9b spirally wound around the outer surface thereof. The core shaft 9a moves from the charging case 2 to the end plate 3
The blade 9b is formed so that its diameter gradually increases toward the side of the end plate 3, and that the closer the blade 9b is to the end plate 3, the larger the angle intersecting the axis center thereof and the smaller the adjacent pitch. The twisting direction of the blade 9b on the screw shaft 9 is upside down.

The raw material cake charged in the charging case 2 is
It is sent into the squeezing chamber 6 by the screw shaft 9, and is squeezed and separated from the juice while moving from the squeezing chamber 6 toward the end plate 3. The dehydrated cake has a discharge cone 14
It is discharged from the discharge port opposite to and is guided by the chute 15 to fall. The squeezed juice flows down along the outer surface of the dehydration case 7 and is received by the liquid receiving pan 16 provided on the upper surface of the machine base 1.

The front and rear dehydration cases 7 are constructed by connecting five dehydration elements 7a to the left and right (see FIG. 2). In FIG. 4, the dewatering element 7a includes a pair of left and right side frames 17
And the upper and lower joint walls 21 and 22 each having a three-section cross section fixed between the side frames 17, and the whirlpool screen 20 (see FIG. 6) fixed to the inner surface of the dehydration cylinder 19. A large number of liquid passage ports 23 are formed in the dehydrating cylinder 19.

In order to automatically open and close the dehydrating case 7, an opening / closing shaft 24 is arranged below the center of the dehydrating case 7 in the front-rear direction and in parallel with the screw shaft 9, so that the dehydrating case 7 can be opened and closed via a group of brackets 25. Support individually swingable back and forth,
A pair of operation cylinders 26 provided on the outer surface of the charging case 2
Open and close both dehydration cases 7. Further, the front and rear pairs of the dehydration elements 7a are sandwiched and fixed by the clamps 27 attached to the upper frame 4 in the front and rear directions.

As shown in FIG. 5, the opening / closing shaft 24 is arranged so as to pass through the lower portion of the insertion case 2 in the left-right direction, and is rotatably supported by a cylindrical shaft 29 fitted onto the opening-closing shaft 24. The cylinder shaft 29 is rotatably supported by a bearing cylinder 30 fixed to the charging case 2. That is, the opening / closing shaft 24 and the cylinder shaft 29 are supported so that they can rotate independently of each other. The other end of the opening / closing shaft 24 is pivotally supported by the end plate 3.

In FIG. 3, the operation cylinders 26 arranged before and after the bearing unit 10 are double-action type hydraulic cylinders, the upper end of which is attached to a support shaft 31 provided in the charging case 2, and the projecting end of the piston rod is operated. Connect with arms 32 and 33. The operating arm 32 on the left side of the drawing is fixed to the opening / closing shaft 24, and the operating arm 33 on the right side is fixed.
Is fixed to the cylinder shaft 29. Both of these arms 32 and 33 are
The rocking operation is performed from the position shown by the solid line in FIG. 3 to the position shown by the solid line in FIG.

As shown in FIG. 5, in order to transmit the rotational movements of the cylinder shaft 29 and the opening / closing shaft 24 to the front and rear dehydration cases 7, as shown in FIG.
The tubular shaft 29 and the dehydration case 7 on the front side of the machine body are connected by the interlocking arm 35, and the opening / closing shaft 24 and the dehydration case 7 on the rear side of the machine body are connected by the interlocking arm 34. The arms 34 and 35 are attached to the side frame 17 of the dewatering element 7a similarly to the bracket 25 (see FIG. 4). The group of brackets 25 includes the opening / closing shaft 2.
The bracket 25, which is loosely fitted onto the shaft 4, and supports the dehydration case 7 on the front side, can rotate relative to the opening / closing shaft 24.

By the above operation mechanism, the dehydration case 7 is in an operating position where it covers the outer surface of the screw shaft 9, and a cleaning position where the side frame 17 of the dehydration case 7 is received by the machine base 1 as shown by the phantom line in FIG. Swing open and close between and. In the operating position, a clamp 27 is provided to clamp the front and rear dehydration cases 7 in a non-separable manner. As shown in FIG. 6, the clamp 27 includes an operation cylinder 37, which is an air cylinder attached to the upper frame 4, and a clamp claw 39 that is vertically moved through a joint 38 by the operation cylinder 37.
The upper joint wall 21 of is clamped in front and back by the clamp claws 39 and fixed. In order to exert a sufficient clamping force, an upper conical sloped wall 40 is provided at the front and rear edges of the upper joint wall 21, and an inverted V-shaped tightening groove 41 corresponding to this is provided in the clamp claw 39. There is. The clamp claw 39 is lowered to a position shown by an imaginary line in FIG.

In order to prevent leakage during use, the loading case 2
And the seal plate 4 on each of the facing walls of the end plate 3
3 is fixed (see FIG. 2), and the rubber packing 44 is arranged along the periphery thereof (see FIG. 5). Further, as shown in FIGS. 5 and 6, a rubber packing 45 is arranged between the joint surfaces of the upper and lower joint walls 21 and 22.

In the above embodiment, the operating cylinder 26 is arranged on the outer side surface of the charging case 2, but it is not necessary.
For example, it can be arranged on the front and rear surfaces of the charging case 2, the end plate 3 side, or between the machine base 1 and the dehydration case 7. The opening angle of the dehydration case 7 may be at least an angle overlooking the outer surface of the screw shaft 9, and may be less than 90 degrees. Of course, the opening angle may be obtuse. At least two clamps 27 may be provided. A motor may be used as the drive source.

[Brief description of drawings]

FIG. 1 is a principle explanatory view showing the contents of this invention.

FIG. 2 is a front view of a screw dehydrator.

FIG. 3 is a view taken along the line AA in FIG.

FIG. 4 is a sectional view taken along line BB in FIG.

5 is a cross-sectional view taken along the line CC in FIG.

FIG. 6 is a vertical sectional side view showing a detailed structure of a clamp.

[Explanation of symbols]

 1 Machine Stand 2 Input Case 3 End Plate 6 Squeeze Chamber 7 Dehydration Case 9 Screw Shaft 21 Upper Joining Wall 24 Opening / Closing Shaft 26 Operation Cylinder 27 Clamp 29 Cylinder Shaft 37 Operation Cylinder 39 Clamp Claw

Claims (3)

[Scope of utility model registration request] 1. A charging case 2 is erected on one side of an upper part of a machine base 1 and an end plate 3 is erected on the other side thereof.
A pair of front and rear dehydration cases 7 that form a compression chamber 6 having a cocoon-shaped cross section between the end plate 3 and the end plate 3, and a pair of upper and lower screw shafts 9 are disposed in the compression chamber 6. An opening / closing shaft 24 is arranged below the center of the dehydration case 7 in parallel with the screw shaft 9, and the dehydration cases 7 are joined to each other in the front-rear direction so as to cover the outer surface of the screw shaft 9 in opposite operating directions. An opening / closing shaft 24 is swingably supported between a separating position and a cleaning position where the outer surface of the screw shaft 9 is opened, and an operating cylinder 26 for opening / closing each dehydrating case 7 and both dehydrating cases 7 in an operating position. And a plurality of clamps 27 for sandwiching and fixing the upper joint walls 21 of the above. 2. A cylindrical shaft 29 penetrating the case 2 in the left and right directions is rotatably supported at the lower part of the charging case 2, one end of the opening / closing shaft 24 is the cylindrical shaft 29, and the other end is the end plate 3.
Between the operation arm 32 fixed to the shaft end of the opening / closing shaft 24 protruding from the cylinder shaft 29 and the charging case 2, and between the operation arm 33 fixed to the shaft end of the cylinder shaft 29 and the charging case. An operation cylinder 26 is arranged between the two, and the dehydrating case 7 and the cylinder shaft 29 on one side, and the dehydrating case 7 and the opening / closing shaft 24 on the other side are fixed to the shafts 24 and 29, respectively. The screw dehydrator according to claim 1, which is connected by 34/35. 3. The clamp 27 is configured to include an operation cylinder 37 and a clamp claw 39 which is operated to move up and down by an operation cylinder 37, and has an upper recessed shape in front of and behind the upper joint wall 21 of both dehydration cases 7. The slanted wall 40 of the slanted wall 4 is formed on the clamp claw 39.
The screw dehydrator according to claim 1 or 2, further comprising an inverted V-shaped tightening groove 41 circumscribing 0.