JPH0352084Y2 - - Google Patents

Description

[Detailed Description of the Invention] "Industrial Application Field" This invention relates to improvement of a filter press used for dewatering sludge, etc.

``Conventional technology'' Traditionally, filter presses dehydrate sludge under pressure in a sealed chamber, resulting in a highly dehydrated cake compared to other dehydrators such as vacuum dehydrators. Therefore, it is often used for dewatering sludge, etc. Pressurized dehydration methods include one in which sludge or the like is dehydrated by being pressurized into a sealed chamber under high pressure, and another in which the cake is compressed using a diaphragm after the sludge is dehydrated. Furthermore, as means for press-injecting the material to be dehydrated, there are methods that press-inject and dehydrate the material into the overflow chamber in a short period of time, and methods that dehydrate the material by press-fitting it over a long period of time (10 hours or more).

``Problems that the invention aims to solve'' However, since the filter press uses high pressure to press in and squeeze out the material, it requires mechanical structural strength, and also requires sealing. However, it requires precision and is expensive to manufacture. In addition, since it is a bump-type vehicle, close control is required, which poses a problem in terms of operation.

"Means for Solving Problems" This invention solves the above-mentioned conventional problems.Compared to conventional filter presses, members such as plates are eliminated as much as possible, and the structure is simple and inexpensive. At the same time, the control means has been simplified and its operability has been improved.The main point is that a hollow frame-shaped A large number of frames formed in the same manner as above are movably arranged in parallel, and the front and rear surfaces of these frames are covered with cloth, and the upper periphery of these frames is filled with undiluted solution so as to form a communicating tube when the frames are closed. A liquid supply plate is interposed at the junction of the front and rear plates, with a liquid supply passage formed through the supply passage, one end of which connects to the supply passage and the other end of which opens between the fabrics of the front and rear frames. Along with, furthermore,
A liquid collection channel is provided on the inner surface of the lower edge of the frame.

"Function" The filter press according to this invention is constructed as described above, so in order to use it to dewater sludge, for example, each frame is closed, and then the filter press is formed by penetrating through each frame. The sludge may be forced into the supply channel of the stock solution.

In other words, the sludge that is press-fitted into the supply channel passes through the liquid supply plate formed at the joint of each frame, is distributed and press-fitted into the over-chamber formed between each frame, and is over-dehydrated using a cloth provided on the frame. . The liquid is then taken out of the machine through a liquid collection path provided on the inner surface of the lower edge of each frame. As is clear from the above explanation, the filter press according to this invention has a simple structure, and in terms of operability, it is sufficient to simply press the material to be dehydrated into each filter chamber, making it easy to control. This allows for hands-free driving. still,
When the overchamber is full and press fitting is no longer possible, the cake accumulated in the overchamber is dropped and taken out by opening the frame, and the overcycle time is 5~ It is capable of operating completely unmanned for 24 hours.

``Embodiment'' To explain this invention based on the attached drawings, in FIG. 1, 1 is a frame arranged on a pair of guide rails 3 bridged between left and right frames 2, 2, As shown in FIGS. 2 and 3, the frame 1 has a stock solution supply channel 4 bored in its upper side edge, and its front and rear surfaces are covered with cloth 5. Reference numeral 6 denotes a liquid collection groove, one end of which is opened to the outside. Next, FIG. 4 shows the stock solution supply path 4.
This is a liquid supply plate for supplying stock solution to the overchamber formed between each cloth 5, 5, and this liquid supply plate 7 has a communication path 4a with the supply path 4 of the frame 1 and a communication path 4a. A passage 4b is provided from the chamber to the overchamber.

In the filter press configured in this way, by closing the frames, an overchamber is formed between each frame 1 by the cloths 5, 5, respectively, and at the same time, at the upper edge of the frame 1, the undiluted solution is The supply channel 4 is connected to form a single tubular stock solution supply channel, and the supply channel 4 forms a stock solution supply channel in each chamber by means of a liquid supply plate 7. Therefore,
By force-feeding sludge or the like to the supply path 4 for the stock solution, the stock solution is supplied to each chamber, and the stock solution can be excessively dehydrated by the cloth 5 due to the press-in pressure. The liquid is then taken out of the machine through a liquid collecting groove 6 provided in the frame 1. Furthermore, by opening the frame 1, the cake accumulated between the cloths falls downward and is taken out. The operating time for this over-dehydration varies depending on the sludge, but it is from 5 to 24 hours, and during this period, completely hands-free operation is possible.

``Effects of the invention'' As is clear from the above explanation, the filter press according to this invention has a large number of hollow frame-like frames arranged in parallel instead of the conventional board with an overbed, resulting in a light weight and structure. It is easy to manufacture and can be manufactured at a low cost, and in particular, in terms of operability, it is possible to perform excessive dehydration without any effort, and it eliminates the high manufacturing costs and operational problems of conventional filter presses. That's what I got.

[Brief explanation of drawings]

Fig. 1 is a schematic side view of the filter press with this invention, Fig. 2 is a front view of its frame, Fig. 3 is a vertical side view thereof, Fig. 4 is a front view of the liquid supply plate, Fig. 5 is a longitudinal sectional view thereof. Code explanation, 1...frame, 2...frame, 3...
... Guide rail, 4 ... Stock solution supply path, 5 ...
Cloth, 6...Liquid collection groove, 7...Liquid supply plate.

Claims (1)

[Scope of utility model registration request] A large number of frames 1 formed in the shape of hollow picture frames are movably arranged in parallel on a pair of bridged guide rails 3, 3 between the left and right frames 2, 2, and the front and rear surfaces of these frames 1 are covered with cloth 5. In addition, these frames 1
A stock solution supply channel 4 is provided through the upper peripheral edge of the frame 1 so as to form a communication pipe when the frames 1 are closed, and one end thereof is connected to the supply channel 4 at the joint between the front and rear frames 1. A liquid supply plate 7 is interposed between the fabrics 5 and 5 of the front and rear frames 1 to form a liquid supply path. A filter press provided with a liquid collection path 6.