KR102145251B1 - frame for plate and frame type filter press - Google Patents

Abstract

The frame of the double filter press is started. The frame of the present invention includes a first metal frame formed in a closed circuit structure and having an inlet hole formed on the closed circuit structure; A second metal frame formed in a closed circuit structure, having an inlet hole formed at the same position as the first metal frame, and having an injection path leading from the inlet hole to the inner space of the closed circuit; And a third metal frame formed in a closed circuit structure and having an inlet hole at the same position as the first metal frame, wherein the first metal frame, the second metal frame, and the third metal frame are stacked to form one frame. To form.

Description

Frame for plate and frame type filter press

The present invention relates to a frame of a double filter press.

The filter press is a filtering device that dehydrates liquid components from a liquid to be treated such as industrial wastewater to the outside of the chamber and separates the remaining sludge from the inside of the chamber by using a plurality of filter plates, filter cloths, and pressurizing means. Here, the chamber means an empty space for receiving the liquid to be treated. The sludge left inside the chamber is also called a cake.

Filter presses can be classified into single filter presses or double filter presses according to their use. In a single filter press, filter plates of the same shape are repeatedly arranged, and the inside of the filter plate includes a concave recess, so that the two filter plates form one chamber. In a single filter press, filter cloths are disposed between the filter plates, respectively.

In contrast, in a double filter press, the filter plate is made of a pair of a closed-circuit structured frame and a membrane structured plate, and these are repeatedly arranged. In the double filter press, the outer wall of the chamber is formed by a frame with an empty space inside and a plate on both sides. In the double filter press, filter cloths are disposed between the frame and the plate, respectively.

Meanwhile, most of the filter plates used in the existing filter press were made of plastic materials such as polypropylene and polyurethane. The frame or plate of the filter plate made of plastic material was required to have a thickness of a certain level or more in order to withstand the high pressure applied during operation of the filter press equipment.

A filter press equipped with a filter plate having a thickness of a certain level or more is suitable for filtration of a liquid to be treated with a relatively low moisture content, but may not be suitable for filtration of a liquid to be treated with a low slurry ratio due to its very high moisture content. In this case, no matter how much the liquid to be treated is dehydrated, it does not solidify, so that no cake is formed. In some cases, the chamber must be formed within about 2T (2mm) to be caked.

In order to reduce the thickness of the filter plate, a method of using a metal material having higher strength than a plastic material can be considered. When a frame made of a metal material is manufactured, it may be difficult to form a path through which the liquid to be treated is introduced into the chamber. In general, the frame of the filter plate of the double filter press is manufactured so that the injection path passes through the thickness direction.

However, when the thickness of the frame is sufficiently thick, it is easy to form an injection path for the liquid to be treated, but it is very difficult to form an injection path of a fine thickness when the thickness of the frame is to be thin.

The technical problem to be solved by the present invention is to provide a frame of a double filter press in which a liquid injection path having a fine thickness can be formed.

In order to solve the above technical problem, the frame of the double filter press according to an embodiment of the present invention is formed in a closed circuit structure, and the first metal frame is formed with an inlet hole on the closed circuit structure; A second metal frame formed in a closed circuit structure, having an inlet hole formed at the same position as the first metal frame, and having an injection path leading from the inlet hole to the inner space of the closed circuit; And a third metal frame formed in a closed circuit structure and having an inlet hole at the same position as the first metal frame, wherein the first metal frame, the second metal frame, and the third metal frame are stacked to form one frame. Can be formed.

In one embodiment of the present invention, a frame of a double filter press according to an embodiment of the present invention comprises: a first metal diffusion bonding surface formed between the first metal frame and the second metal frame; And a second metal diffusion bonding surface formed between the second metal frame and the third metal frame.

In addition, in order to solve the above technical problem, the method of manufacturing a frame for a double filter press according to an embodiment of the present invention is formed in a closed circuit structure, and a first metal frame, a second metal frame, and a second metal frame having an inlet hole formed on the closed circuit structure. 3 preparing a metal frame; Forming an injection path through the second metal frame from the inlet hole to the inner space of the closed circuit; And forming one frame by stacking the first metal frame, the second metal frame, and the third metal frame.

In one embodiment of the present invention, a method of manufacturing a frame for a double filter press according to an embodiment of the present invention includes the first metal frame and the second metal frame, the second metal frame and the second metal frame by metal diffusion bonding. 3 bonding the metal frame; may further include.

In the present invention, there is an effect that a liquid injection path having a fine thickness can be formed in a frame of a double-type filter press manufactured thinly.

1 is a diagram showing a schematic structure of a filter press to which a frame according to the present invention can be applied.
2 is an exploded view showing a partial configuration of a frame of a double filter press according to the present invention.
3 is a diagram showing a frame of a double filter press according to the present invention.
4 is a diagram showing a relative arrangement with other components when the frame of the double filter press according to the present invention is applied.
5 is a view showing a method of manufacturing a frame for a double filter press according to the present invention.

Since the present invention can apply various transformations and have various embodiments, specific embodiments are illustrated in the drawings and will be described in detail in the detailed description. However, this is not intended to limit the present invention to a specific embodiment, it is to be understood to include all conversions, equivalents, and substitutes included in the spirit and scope of the present invention.

In describing the present invention, when it is determined that a detailed description of a related known technology may obscure the subject matter of the present invention, a detailed description thereof will be omitted.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

1 is a diagram showing a schematic structure of a double filter press to which a frame according to the present invention can be applied.

Referring to FIG. 1, the filter press includes a plurality of frames 10, a plurality of plates 20, a liquid to be treated supply unit 30, a hydraulic cylinder 40, a pressure control means 42, a head 50, and a follower. It includes (60).

The frame 10 is alternately arranged with the plate 20.

When using a filter press, a filter cloth is disposed between the frame 10 and the plate 20.

The liquid to be treated supply unit 30 serves to supply a liquid to be treated, such as industrial wastewater, that needs dewatering.

The liquid to be treated can be injected into the chamber in various ways. Inlet holes may be formed in each of the frame 10 and the plate 20 through any one of the vicinity of the corner. The liquid to be treated is in a state in which the frame 10 and the plate 20 are in close contact with each other and flows into the connected inlet hole to be supplied to the chamber. The introduced liquid to be treated may be supplied through an injection path through the inlet hole to the chamber.

The hydraulic cylinder 40 provides pressure to the frame 10 and the plate 20, and this pressure can be adjusted through the pressure control means 42.

The pressure control means 42 may adjust the level of pressure provided by the hydraulic cylinder 40 in stages.

The head 50 serves as a reference surface for compressing the frame 10 and the plate 20 of the filter press, and is fixed at a reference position.

The follower 60 includes a surface for pressing the frame 10 and the plate 20 on the opposite side of the head 50 and is movable.

The follower 60 may move toward or away from the frame 10 and plates 20.

The follower 60 moves toward the frame 10 and the plate 20 to transmit the pressure of the hydraulic cylinder 40 to them. The follower 60 also assists the separation of the frame 10 and the plate 20 by moving in the opposite direction to the top. That is, the follower 60 may be connected in succession to the frame 10 and the plate 20 connected by a connection auxiliary means such as a chain to attract them to separate them from each other.

It relates to a frame 10 used in the double filter press as described above according to the present invention.

2 is an exploded view showing a partial configuration of the frame 100 of the double filter press according to the present invention.

Referring to FIG. 2, the frame 100 according to an embodiment of the present invention is one frame formed by stacking the first metal frame 110, the second metal frame 120, and the third metal frame 130. I can.

The first metal frame 110, the second metal frame 120, and the third metal frame 130 may each be formed in a closed circuit shape. That is, each of the first metal frame 110, the second metal frame 120, and the third metal frame 130 may have a rectangular shape with an empty center portion. In the description of the present invention, an empty portion inside the frame is referred to as a chamber.

Each of the first metal frame 110, the second metal frame 120, and the third metal frame 130 may have an inlet hole 160 formed at one corner. The inlet hole 160 forms a long tube-like passage by contacting the frame and the plates, and may serve as a supply path for a liquid to be treated.

Each of the first metal frame 110, the second metal frame 120, and the third metal frame 130 may have discharge holes 170 formed at three different corners from the portion where the inlet hole 160 is formed. . The discharge hole 170 forms a passage such as a long tube as the frame and the plates are in close contact, and may be a discharge passage for the filtrate.

In one embodiment of the present invention, it is illustrated that one inlet hole 160 and three outlet holes 170 are formed in each frame, but the formation position and number of the inlet hole 160 and the discharge hole 170 are the present invention. It is not limited to the embodiment of.

An injection path 162 may be formed between the inlet hole 160 of the second metal frame 120 and the chamber.

In the injection path 162, when the first metal frame 110, the second metal frame 120, and the third metal frame 130 are stacked to form one frame, the upper and lower parts of the injection path 162 The injection path 162 of the first metal frame 110 and the second metal frame 120 is covered by a portion where the injection path 162 is not formed, thereby forming one passage. By being manufactured in this way, the liquid to be treated flowing into the inlet hole 160 may be supplied to the chamber through the injection path 162.

3 is a diagram showing a frame 100 of a double filter press according to the present invention.

3, the frame 100 of the double filter press according to an embodiment of the present invention is the first metal frame 110, the second metal frame 120 and the third metal frame 130 in FIG. It may be laminated and bonded. By such bonding, the injection path 162 may have a tubular shape connecting the chamber from the inlet hole 160.

The frame 100 of the double filter press according to the present invention may include a first metal diffusion bonding surface 140 and a second metal diffusion bonding surface 150 formed on an interface.

The first metal diffusion bonding surface 140 and the second metal diffusion bonding surface 150 may be formed by a metal diffusion bonding method.

Metal diffusion bonding is a bonding method in which bonding surfaces with minute gaps are bonded with minimal deformation due to heat and pressure. Metal diffusion bonding, microscopically, is a bonding method in which both atoms of the bonded surface approach and bond within the gravitational sphere in a solid state.

Metal diffusion bonding is a method capable of bonding not only the same type of metal but also between different types of metals. When metal diffusion bonding is performed between different kinds of metals, atoms of different kinds of metals may be mixed on the bonding surface.

In the description of the present invention, a bonding surface formed between two metals by a metal diffusion bonding method will be referred to as a metal diffusion bonding surface.

In the frame of the present invention, a second metal frame 120 having an injection path 162 formed between the first metal frame 110 and the third metal frame 130 in which the injection path 162 is not formed is placed and metal diffusion bonding Since it is formed by bonding by means of, an injection path 162 having a fine size may be formed.

In one embodiment of the present invention, a frame having a total thickness of about 3T (3mm) may be manufactured, and an injection path 162 having a thickness of about 1T (1mm) may be formed in the frame.

If one metal frame having a thickness of about 3T (3mm) is manufactured without using the method of combining three separate frames as in the present invention, the injection path must be formed after the frame having inlet holes and discharge holes are formed. However, it is very difficult to perforate metal with a thickness of about 3T (3mm), and there is a problem with a large risk of damage. In consideration of these problems, the present invention has the effect of providing a very thin metal frame in which the injection path 162 of a fine thickness is formed.

4 is a diagram showing a relative arrangement with other components when the frame 100 of the double filter press according to the present invention is applied.

Referring to FIG. 4, the frame 100 of the double filter press according to the present invention may be repeatedly arranged alternately with the plate 200.

A filter cloth 300 may be disposed between the frame 100 and the plate 200. The filter cloth 300 is a tool for filtering only moisture from the liquid to be treated.

A brief description of the roles of the frame 100, the plate 200, and the filter cloth 300 during the double filter press operation is as follows.

The frame 100 may form a chamber therein by being in close contact with the plates 200 on both sides. In this case, the plate 200 may constitute outer walls of the front and rear surfaces of the chamber, and the frame 100 may constitute the outer walls of the upper, lower, left, and right surfaces.

The liquid to be treated is introduced into the inlet hole 160 by an external force to be supplied to each chamber. The liquid to be treated may be supplied to the chamber through the injection path 162 formed in each frame 100.

When the filter press device presses the frame 100 and the plate 200, moisture in the liquid to be treated injected into the chamber passes through the filter cloth 300 and flows between the irregularities of the plate 200. The filtrate flowing between the irregularities of the plate 200 may flow into the discharge hole 170 formed at the three corners and be discharged to the outside. Although not shown in the drawings, each plate 200 may be provided with a passage connecting the concave-convex portion and each discharge hole 170.

5 is a view showing a method of manufacturing the frame 100 of the double filter press according to the present invention.

Referring to FIG. 5, in step S501, a frame made of a metal material may be prepared. The metal frame has the same shape as the first metal frame 110 described in FIGS. 2 and 3, and three frames having the same shape may be prepared.

The injection path 162 having the above-described shape may be formed in one of the three metal frames prepared in step S503. After step S503, the first metal frame 110, the second metal frame 120, and the third metal frame 130 as shown in FIG. 2 may be prepared.

In step S505, the first metal frame 110, the second metal frame 120, and the third metal frame 130 may be sequentially stacked. The second metal frame 120 in which the injection path 162 is formed must be positioned between the first metal frame 110 and the third metal frame 130.

In step S507, metal diffusion bonding is performed so that the first metal frame 110, the second metal frame 120, and the third metal frame 130 are bonded as they are stacked.

When the metal diffusion bonding is in progress, the first metal diffusion bonding surface 140 between the first metal frame 110 and the second metal frame 120, and between the second metal frame 120 and the third metal frame 130 The second metal diffusion bonding surface 150 may be formed. When the metal diffusion bonding surface is formed, the first metal frame 110, the second metal frame 120, and the third metal frame 130 may be incorporated into one frame 100.

The terms used in the present application are only used to describe specific embodiments, and are not intended to limit the present invention. In the present application, terms such as "comprise" or "have" are intended to designate the presence of features, numbers, steps, actions, components, parts, or combinations thereof described in the specification, but one or more other features. It is to be understood that the presence or addition of elements or numbers, steps, actions, components, parts, or combinations thereof does not preclude in advance.

100: frame
110: first metal frame
120: second metal frame
130: third metal frame
140: first metal diffusion bonding surface
150: second metal diffusion bonding surface
160: inlet hole
162: with injection
170: discharge hole
200: plate
300: filter cloth

Claims (4)

In the frame of the plate and the frame that are components of the filter plate of the double filter press,
A first metal frame formed in a closed circuit structure and having an inlet hole formed on the closed circuit structure;
A second metal frame formed in a closed circuit structure, having an inlet hole formed at the same position as the first metal frame, and having an injection path leading from the inlet hole to the inner space of the closed circuit;
A third metal frame formed in a closed circuit structure and having an inlet hole formed at the same position as the first metal frame;
A first metal diffusion bonding surface formed between the first metal frame and the second metal frame; And
Including; a second metal diffusion bonding surface formed between the second metal frame and the third metal frame,
The frame of the double filter press, characterized in that the first metal frame, the second metal frame and the third metal frame are stacked to form one frame.
The method of claim 1,
The total thickness of the frame is formed to 3mm,
The frame of the double filter press, characterized in that the injection path is formed of 1mm.
In the method of manufacturing the frame of the plate and the frame, which are components of the filter plate of the double filter press,
Preparing a first metal frame, a second metal frame, and a third metal frame formed in a closed circuit structure and having an inlet hole on the closed circuit structure;
Forming an injection path through the second metal frame from the inlet hole to the inner space of the closed circuit;
Forming one frame by stacking the first metal frame, the second metal frame, and the third metal frame; And
And bonding the first metal frame and the second metal frame, and the second metal frame and the third metal frame by metal diffusion bonding. 2. A method of manufacturing a frame for a double filter press, comprising: a.
The method of claim 3,
The total thickness of the frame is formed to 3mm,
The method of manufacturing a frame for a double filter press, characterized in that the injection path is formed of 1 mm.

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