JPH0725206Y2 - Filtration device - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial field of application] This invention is suitable for use in the processing of food products such as seafood processing, bean jam and soybean meal, and brewing, in the work department that produces industrial wastewater such as the paper and pulp industry, and in the food and drink business that produces a large amount of kitchen waste. The present invention relates to a filtration device.

[0002]

2. Description of the Related Art The above-mentioned treatment of fine substances containing a large amount of water is inefficient, because the filtration face is easily clogged by vacuum sieving, etc. Vibrate to promote sieving and
There is known a vibrating and sieving type filtration device in which the mesh surface is rubbed through a rake to constantly remove solid matter on the mesh. (Actual publication 60-22986)

[0003]

By the way, the sieving surface of the above device has a structure that can withstand the rake of the rake.
A punching metal made of stainless steel having pores with wear of 5 to 1.0 is used, and it cannot be used for filtering fine matters below the pores. For this purpose, the sieving surface is made of, for example, a wire net having extremely fine holes of 100 to 300 mesh, and water is sprayed instead of the rake to remove solid matters on the net surface. In this case, since the raw material water to be filtered usually contains oil and fat, the mesh of the wire mesh may be blocked by a water film due to the surface tension of water containing the oil and fat having this viscosity. In many cases, mere water sprinkling has almost no effect in removing the solid matter on the water film and the net surface.

[0004]

On the other hand, this invention is not merely water sprinkling, but if pressured water is jetted from above hitting the net surface almost at right angles, the water film covering the fine net is instantly destroyed. In addition, it was developed focusing on the fact that solid materials can be pushed outwards.

[0005]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Referring to the drawings, an embodiment of the present invention will be described. In FIG. 1, reference numeral 1 is a rectangular box-shaped main body, and a raw material supply box 2 is formed by partitioning the upper front part. This raw material supply box temporarily stores the raw material sent from the raw material inlet pipe 3 and causes it to flow out evenly from the overflow port 4 at the rear end. A treated water outlet 5 is provided below the front wall of the main body 1, and a solid chute 6 is provided at a required height over both side walls of the rear wall. A filter plate 7 is provided in the main body 1 as an inclined surface that slightly rises rearward at a height lower than the overflow grate 4. The filter plate 7 is made by tensioning a stainless wire mesh having a mesh of 200 mesh on the frame body, and is supported by a spring plate 8 fixed to the main body 1 at a proper position near the rear end.
It is supported and attached to an eccentric weight type vibration mechanism 9 which is axially provided mainly at a proper position near the front end. Reference numeral 10 is a motor for driving the vibration mechanism 9.

Next, inside the main body, which is above the filter plate 7, as shown in FIG. 2, a traveling pipe 11 which is supported by both side walls of the main body at both ends and is capable of reciprocating in the front-rear direction is horizontally mounted.
The traveling pipe 11 has a large number of injection pipes 13 ...
In this traveling pipe 11, a nut member 14 provided at a portion corresponding to one end is screwed into a feed screw 15 provided along one upper side of the main body 1 to feed a screw 15 by a motor 16.
According to the rotation of the, the filter plate 7 is moved back and forth at a low speed. The feed screw 15 is formed as a ball screw that is screwed into the nut member 14 via a ball bearing.

Further, a high pressure hose 17 bent in a loop shape is connected to one end of the traveling pipe 11, and the other end of the high pressure hose 17 is connected to a water supply pipe via a manual valve 18 for washing the upper part located outside the main body. The water supply pipe 19 is also connected to a spray 21 for lower cleaning which opens below the filter plate 7 via a manual valve 20 for lower cleaning. Next, FIG. 3 shows an explanatory view of the upper and lower cleaning mechanisms provided with the filter plate 7 sandwiched therebetween. As shown in the same figure, limit switches 22a and 22b are attached to portions near both ends of the main feed screw 15. The nut member 14 provided at one end of the traveling pipe 11 is connected to the limit switch 22a,
When contacting one of the two 22b, the motor 16 is rotated left and right to reciprocate the traveling pipe 11, and
Water supply pipe 1 when traveling pipe 11 moves backward (to the left in FIG. 1)
The water supply is stopped via a solenoid valve (not shown) provided at an appropriate position in FIG. Further, this reciprocating motion can be adjusted at any time through a timer provided separately, and the cleaning interval can be arbitrarily set.

[0008]

With the above structure, the raw material water flowing from the raw material inlet pipe 3 into the raw material supply box 2 flows down onto the filter plate 7 through the overflow grate 4 and is finely oscillated via the vibrating mechanism 9. The raw material on the filter plate 7 that is being filtered is forcibly filtered, and the water drops together with the fine particles and is discharged from the treated water outlet 5. In this case, the traveling pipe 11 intermittently reciprocates above the filter plate 7, and pressure water (pressure 8 in the embodiment
(Kg / cm ² ) is injected, but since this injection is in a direction substantially perpendicular to the filter plate 7, the injection flow penetrates the mesh vertically to remove the water film and solid matter, and this injection retreats. Since no time is taken, there is no risk of moving backward the raw material to be filtered which moves forward on the filter plate 7, and always works to promote the advance of the raw material to be filtered. In the above-mentioned embodiment, the following manual valve 20 for cleaning is also provided for cleaning the filter plate 7 from below, but this is not normally used but is a spare for cleaning the upper part, It is not necessary. As described above, the present invention is based on the filter plate 7
By making 100 to 300 mesh, it is possible to efficiently filter and wash fine matters, and moreover, unmanned operation is possible, which has many advantages.

[Brief description of drawings]

FIG. 1 is a side sectional view.

FIG. 2 is a rear view seen from the rear.

FIG. 3 is an explanatory diagram of a cleaning mechanism.

[Explanation of symbols]

 1 Main Body 2 Raw Material Supply Box 3 Raw Material Inlet Pipe 4 Overflow Trough 5 Treated Water Outlet 6 Solid Chute 7 Filter Plate 8 Spring Plate 9 Vibration Mechanism 11 Traveling Pipe 13 Injection Pipe 14 Nut Member 15 Feed Screw 17 High Pressure Hose 19 Water Supply Pipe 21 Lower cleaning spray 22a, 22b Limit switch

Claims (1)

[Scope of utility model registration request] 1. An overflow grate 4, through which raw material should flow down above the front part,
Inside the box-shaped main body 1 having the solid chute 6 at the rear end and the treated water outlet 5 at the bottom, a filter plate 7 made of a fine mesh is slanted upward slightly via a vibration mechanism 9. The filter plate 7 is installed above the filter plate 7,
Is provided with a traveling pipe 11 that moves forward and backward by an appropriate reciprocating mechanism, and a large number of injection pipes 13 ...
A filter device in which ∙ is disposed so that pressure water is jetted from each tip only when moving forward.