JPS5914067Y2 - Screw-type compression dehydration equipment - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a screw press dewatering device.

Conventionally, screw press dehydrators have been used in the rubber industry, etc., and are effective in simplifying processes and saving energy, but the water content of the raw materials used is usually 5.
It is often around 0% WB.

Therefore, a large filtration area is required and many slits are provided in the dewatering section, resulting in a disadvantage that the apparatus becomes complicated and large.

On the other hand, in water-based polymerized thermoplastic resins, the content of liquid components such as water is as low as 40% WB or less, and in principle, it is possible to efficiently compress and dehydrate the resin even with a small filtration area.

The inventors paid attention to this point and further achieved miniaturization and simplification of the dewatering section by shaping the members constituting the dewatering section into a shape that has high strength against the squeezing pressure.

In addition, by providing a mechanism to prevent the clogging of the dewatering section slit, which is a problem when compressing and dehydrating fine powder, we have created a compact and versatile screw press dehydrator that can be used for many raw materials with different particle sizes. I came up with an idea.

That is, the gist of the present invention is that the raw material supply section and the dehydration section following the raw material supply section are constructed of barrel-shaped objects, and that the peripheral wall of the barrel-shaped object in the dehydration section is placed at an appropriate interval. A plurality of penetrating holes are formed, a rod-shaped object is removably inserted into the holes, and a slit through which a liquid component can pass is formed between the hole and the rod-shaped object. The screw set is located in the compression dehydration equipment.

The present invention will be explained below with reference to the drawings. Fig. 1 is a longitudinal sectional side view showing an example of the device according to the invention;
The figure is an enlarged view of section A in FIG. 1. In FIGS. 1 and 2, both the raw material supply section and the dehydration section are composed of a barrel 2, and after the dehydration section there is a constriction section 4 for maintaining the tip pressure. is the provision.

A plurality of holes 6 are bored through the peripheral wall of the dewatering section at appropriate intervals, and the inner surface 7 of the barrel of the holes 6
A female thread is provided on the side along the length of Ll, and a bolt 3 is screwed into the first female thread in a manner that allows it to be attached and removed from the barrel outer surface 8 side with some play, and furthermore, a bolt 3 is screwed into the hole 6 from the barrel outer surface 8 side. The inner diameter of the length L2 portion where the female thread is not provided is larger than the outer diameter of the bolt 3, so that the water removed from the raw material in the dewatering section is formed by the looseness of the threaded part between the female thread and the bolt. The liquid is discharged to the outside through a slit in the hole 6 and an annular snot formed by the part of the hole 6 where no female thread is provided and the bolt 3.

FIG. 3 is an enlarged longitudinal sectional side view showing another example of section A in FIG.
The bolt 3' is screwed into the hole 6' by cutting a thread only in the upper part (L'2 + L3) of the hole 6', and a part of the threaded part of the bolt 3' is scraped off in the axial direction like a tap. , the liquid component coming out from the raw material in the barrel is at the bottom of the bolt 3'(L'
1 + L '2) and the hole 6', and a slit formed by the hole 6' and the threaded part of the bolt 3' to be discharged out of the barrel. It has become.

According to the present invention configured as described above, the dewatering section has a shape that has high strength against compression pressure, so the dehydration section can be made smaller and simpler, and it also solves the problem when compressing and dehydrating fine powder. This has many industrial effects such as being able to prevent the dewatering slit from clogging.

[Brief explanation of the drawing]

Fig. 1 is a partial longitudinal sectional side view of a device showing an example of the present invention, Fig. 2 is an enlarged longitudinal sectional side view of section A of the device of Fig. 1, and Fig. 3 is another example of section A of Fig. 1. 1 to 3, 1 is a hopper, 2 is a barrel, 3, 3
' is a bolt, 4 is a constriction part for maintaining tip pressure, 5 is a female threaded part, 6 and 6' are holes, 7 is an inner surface of the barrel, and 8 is an outer surface of the barrel.

Claims (1)

[Scope of utility model registration request] A raw material supply section and a dehydration section following the raw material supply section are constructed of a barrel-shaped object, and a plurality of holes are bored through the peripheral wall of the barrel-shaped object at appropriate intervals in the dehydration section, A press dewatering device with a screw set, characterized in that a rod-shaped object is removably inserted into the hole, and a slit through which a liquid component can pass is formed between the hole and the rod-shaped object.