JPH04108992U - Outer cylinder rotary screw press - Google Patents

Abstract

(57) [Summary] [Purpose] In a screw press, the outer cylinder is made to rotate in the opposite direction with respect to the screw shaft, and the rotation mechanism of this outer cylinder is used to drive the liquid squeezing part formed on the outer cylinder. The objective is to obtain a screw press with a mechanism that has good solid-liquid separation efficiency. [Structure] A counter shaft is provided between the screw shaft and the drive shaft of its driver, and the pinion provided on the counter shaft is directly engaged with the drive gear of the outer cylinder, so that the screw shaft and the outer cylinder rotate in reverse rotation with each other. At the same time, around the outer cylinder, a fixed disk and a sliding disk formed on the outer cylinder are laminated alternately, and a sliding disk of a liquid squeezing section is moved by acting on the sliding disk. It is equipped with a movable plate that can be moved. [Effect] Efficient solid-liquid separation is possible by reversing the outer cylinder, and the screw shaft and liquid squeezing part can be operated simultaneously with one drive, making the mechanism simple and inexpensive to manufacture. be able to.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention relates to the improvement of screw presses, which have high solid-liquid separation efficiency. The aim is to provide a Lew Press.

0002

[Conventional technology]

Conventional screw presses generally have a metal mesh stretched around their periphery, and The stock solution supplied at the end is conveyed under pressure by the screw shaft and solid-liquid separated by the aforementioned metal mesh. doing. For example, Utility Model Publication No. 40-33983. Also, the metal attached to the outer cylinder As a screen instead of a mesh, a large number of fixed disks and movable disks are connected with minute gaps. There are some that are laminated with . For example, Utility Model Publication No. 64-27195, Japanese Patent Application Publication No. 5 This is No. 9-218298.

[Problem that the idea aims to solve]

0003 However, it is a conventional outer cylinder with a metal mesh stretched over it as a screen. There is a limit to the fineness of the mesh due to strength, etc., and when compressed under high pressure, it will not work with the filtrate. However, in order to solve this problem, the above-mentioned method is used. Even if the screen is made up of a large number of laminated disks, the conventional screen is A special transmission mechanism is required to move the laminated discs, making it expensive. be.

0004

[Means to solve the problem]

This idea supports the outer cylinder in a screw press so that it can rotate freely. This is a screw press that uses a supporting mechanism to prevent solid material from leaking. So, the gist of this is that in a screw press, the The outer cylinder is supported so as to be reversed, and at least the terminal end of this outer cylinder is The screen is automatically slid against the fixed disk with a small gap between the fixed disk and the fixed disk. It is constructed by laminating conventional sliding discs, and on the other hand, a transmission plate is placed around the outer cylinder parallel to the outer cylinder. A driving shaft is provided, and a pinion provided on this transmission shaft meshes with a driving gear provided on an outer cylinder. Furthermore, the outer cylinder has a periphery that can be moved by coming into contact with the sliding disc. It is equipped with a sliding plate.

[0005]

[Effect]

The screw press according to this invention is constructed as described above, and therefore, the screw press is When the outer cylinder is rotated, the sliding circle moves against the fixed disk as the outer cylinder rotates. The plate slides. At this time, a minute gap (0.1 to 0.5 m/m), the caked raw solution is subjected to shearing action by both discs, and the solid-liquid content is be separated.

[0006] In other words, in this invention, since the outer cylinder is designed to rotate, this rotation can be utilized. It is possible to enhance the solid-liquid separation effect by exerting a shearing action on the cake using It does not require a special disk drive mechanism unlike the conventional one. Below is the diagram This idea will be explained in detail based on the following aspects.

[0007]

【Example】

In Fig. 1, reference numeral 1 indicates an outer cylinder with a screen stretched around its periphery so as to be freely rotatable. , 2 is a liquid extractor made by laminating a fixed disk and a sliding disk, which are added to the end of the outer cylinder 1. Part 3 is a screw shaft 3a provided concentrically within the outer cylinder 1 and the liquid squeezing part 2. is a screw wound around its outer circumference, 4 is a stock solution supply tank, and 5 is a support roller of outer cylinder 1. It is ra.

[0008] Next, based on FIGS. 2 to 4, the drive mechanism and drive mechanism of the screw press according to this invention will be explained. The structure of the liquid squeezing section 2 will be explained. In Fig. 2, numeral 6 is a drive machine, and 7 is a counter shaft. , 8 is the drive shaft of the screw shaft 3, 9 is the pinion sprocket provided on the shaft of the drive machine , 10 is a sprocket provided on the counter shaft 7, and 11 is a sprocket for transmission to the drive shaft. Rocket 12 is a sprocket fixed to the drive shaft 8, and 13 is a sprocket fixed to the drive shaft 8. This is a chain hung between the pieces.

[0009] Further, the counter shaft 7 is extended parallel to the screw shaft 3, and the counter shaft 7 is extended parallel to the screw shaft 3. A pinion 15 that meshes with the drive gear 14 provided at the end of the outer cylinder 1 is provided at the end of the outer cylinder 1. Furthermore, the extension part has a disc 16 for operating the sliding disc of the liquid squeezing part mentioned above. It is fixed. As shown in FIGS. 3 and 4, the above-mentioned liquid squeezing portion 2 has an inner diameter that is equal to A cylindrical liquid squeezer is formed by alternately stacking fixed disks 2a and sliding disks 2b that approximately match the inner diameter of the tube. It constitutes part 2.

0010 That is, as shown in FIG. 4, the fixed disc 2a and the sliding disc 2b are A small gap s is formed between the fixed disk 2a and the sliding disk 2b which are stacked with each other via the base 2c. is formed. In addition, each sliding plate 2b is fixed by support bolts 2d and 2e. It is fixed while maintaining the gap s with the disc 2a, and the other support bolt 2e is loosely inserted into the through hole 2f of the fixed disc 2a, and the through hole 2f and the support bolt 2e are connected with each other. It is designed to be able to slide against the fixed disc within the loose fit range.

[0011] The outer peripheral surface of this sliding disc 2b is provided with an extended end portion of the counter shaft 7 mentioned above. The provided disc 16 is brought into contact with the disc 16 so that it slides within the range of the above-mentioned loose fit. Ru. The disc 16 on which this sliding disc slides is not provided on the counter shaft 7, but on other It may be set up somewhere.

0012 The screw press according to this invention is constructed as described above, and from the supply tank 4 The stock solution supplied into the outer cylinder 1 is sent inside the outer cylinder 1 to the left in the figure by the screw 3a. During this process, solid and liquid are separated, and the filtrate drips from the periphery of the outer cylinder 1, and the solid content is separated from the left end of the outer cylinder 1. It can be taken out of the machine.

[0013] In this solid-liquid separation work, in this invention, the outer cylinder 1 is connected to the screw shaft 3. Since it is configured to reverse, shear force acts on the caked stock solution. This enables efficient solid-liquid separation. In addition, the liquid squeezing section 2 provided at the final stage of squeezing Since the drive device of the outer cylinder 1 is used to drive, no special drive device is required. It can be manufactured at low cost. In addition, the gap between the liquid in the liquid squeezing part is 0.2m/m or less. When filtering and squeezing a stock solution containing fine solids, it is possible to Compared to punched metal or metal mesh, there is no leakage of fine particles. , the solid content recovery rate is high. In addition, due to the entire length of the outer cylinder 1, it slides with the fixed disk. It goes without saying that the liquid squeezing unit can be formed by stacking discs.

[0014]

[Effect of the idea]

In this way, the screw press according to this invention has an outer cylinder relative to the screw shaft. Since the rotation is reversed, solid-liquid separation efficiency is high. The aircraft structure can be simplified and manufactured at low cost, and This type of screw press has a high recovery rate of solids due to this liquid squeezing section. This solved the problem.

[Brief explanation of drawings]

FIG. 1 is a side view of a screw press to which this invention has been applied, with a portion thereof being a sectional view.

FIG. 2 is a plan view of a screw press to which this invention is applied.

3 is a front view of the liquid squeezing section taken along line AA in FIG. 1. FIG.

FIG. 4 is a longitudinal cross-sectional side view of a portion of the liquid squeezing section in FIG. 1;

[Explanation of symbols]

1 Outer cylinder 2a Fixed disc 2b Sliding disk 3 Screw shaft 7 Counter axis 14 Drive gear 15 Pinion 16 Disk

Claims (1)

[Scope of utility model registration request] 1. In a screw press, an outer cylinder 1 is supported so as to be reversed relative to a screw shaft 3, and a screen at least at the terminal end of the outer cylinder 1 is connected to a fixed disk 2a with a small gap therebetween. Fixed disk 2
A and a sliding disc 2b that can freely slide are stacked on each other, and a transmission shaft 7 is provided around the outer cylinder 1 in parallel with the outer cylinder 1. A pinion 15 is meshed with a drive gear 14 provided on the outer cylinder 1, and a sliding disc 2b is provided around the outer cylinder 1, which can abut against and move the sliding disc 2b. An external cylinder rotary screw press provided with a moving plate 16.