KR20020096967A - Hermetic Type Filtering Device - Google Patents

Abstract

PURPOSE: Provided is a sealed filter capable of efficiently filtering liquid to be filtered across the overall length of a pipe for a long time and achieving a satisfactory deodorizing process. CONSTITUTION: The sealed filter comprises a case(1) with an inlet(3) and an outlet(4) opened at the bottom part(2a); a lid(5) which attachably/detachably connected to upper end of the case(1) and seals the case(1); a roll filter(6), which is obtained by winding a sheet-like filter medium, and is housed in a case(1) in such a way that the outer peripheral face of the filter(6) comes into contact with the inner periphery of the case(1); a jet pipe(7) having the lower end(7a) connected to the inlet(3) and the upper end(7b) protruded from the center through hole(6a) so as to spout the liquid to be filtered, fed under pressure, which is installed in the center of the case(1); a colliding plate(8), which is fitted, in the axial direction, to the inner face of the lid(5) and dispersing the liquid to be filtered which is spouted, almost uniformly over the upper end face of the roll filter(6) by the collision; and an annular fixed plate(10) which is attached to the colliding plate(8) through a fitting bar(9) and fixes the roll filter(6).

Description

Hermetic Type Filtering Device

The present invention relates to, for example, a sealed filtration device for efficiently and efficiently filtering liquids containing fine dust or foreign matter particles such as cutting oil after use, fried oil, fish farming water, raw materials after fermentation, muddy water and rainwater. .

Conventionally, as this kind of filtration apparatus, there exist some which were described in Unexamined-Japanese-Patent No. 8-107830, for example.

The filtration device described in this publication generally introduces a filtrate liquid from an inlet on the upper side of a pressure cooker containing a dedicated filter, and extracts a liquid obtained by filtering dust or foreign matter particles through the filter from the outlet of the lower portion of the pressure cooker. The element filter method conventionally used for the filtration of the engine oil of an automobile is employ | adopted.

By the way, in the conventional filtration apparatus, the element filter method is employed to inject a filtrate liquid at a constant flow rate of about 40 cc / cm ² per minute to one side of the filter. There is a problem that the obtained fine dust and foreign matter particles are concentrated on one side of the filter, and the filter causes clogging after a short period of time from the start of use.

It is therefore an object of the present invention to provide a sealed filtration device and a filtration system using the same by studying the structure so as to distribute the filtrate evenly to the inflow side of the filter. have.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing one embodiment of a sealed filtration device of the present invention.

FIG. 2 is a longitudinal sectional view of the hermetic filtering device with the roll filter shorter than that of FIG.

FIG. 3 is a longitudinal sectional view of the hermetic filtration device having the roll filter without the central core of the roll filter of FIG.

4 is a top view of the sealed filtration device of FIG.

Fig. 5 (A), (B) and (C) are perspective views showing the respective roll filters.

Fig. 6 is a schematic block diagram showing an example of the filtration system of the present invention using the sealed filtration device of Figs.

Fig. 7 is a longitudinal sectional view showing another embodiment of the hermetic filtration device of the present invention.

8A and 8B are an exploded perspective view and a perspective view of an assembled state showing the main part of the sealed filtration device of FIG.

<Description of the symbols for the main parts in the drawings>

1: sealed filtration device

2: case

3: inlet

4: outlet

5: cover

6: roll filter

7: blowout pipe

8: crash plate

10: fixed plate

11: center core

12: deodorant filter

12a: Female thread

12b: small diameter hole

14: clamp

17: bolt

24: pump

25: discharge tube

33: control circuit

34: temperature sensor

35 pressure sensor

38: computer

39: temperature alarm

40: pressure alarm

41: keyboard

In order to achieve the above object, the sealed filtration device of the present invention includes a cylindrical case having an inlet and an outlet of a filtrate at the bottom, a lid for sealing the inside of the case detachably attached to an upper end of the case, It is formed by having a through-hole centered around a sheet-like filter medium, the outer circumferential surface is in contact with the inner circumference of the case, the roll filter accommodated in the case, the lower end is connected to the inlet, and the upper end is the upper end of the through hole of the roll filter. The roll filter, which is attached to the case by protruding therefrom, and ejects the filtrate to be pumped, and is mounted on the inner surface of the lid so as to be adjustable in position in the axial direction of the case. A collision plate that is distributed approximately evenly over the top surface of the On, it is inserted into the distributor pipe, and is characterized in that it includes an annular fixing plate for fixing the roll filter.

In the sealed filtration device, a roll filter formed by winding a sheet-like filter medium is housed in a case having an inlet port and an outlet port at a bottom thereof and sealed with a removable lid, and a lower end connected to the inlet port. The upper end protrudes from the upper end of the center through-hole of the said roll filter, and the upper side of the upper end of a blower pipe | tube is arrange | positioned at the inner surface of the said cover so that position adjustment is possible in the axial direction of a case, and attaches to this collision board The annular fixing plate attached through the formed member surrounds the upper end of the jet pipe and fixes the upper end of the roll filter. Therefore, the filtrate which has been pressurized is ejected from the upper end of the jet pipe toward the impingement plate, collides with the impingement plate, and is substantially evenly dispersed toward the upper end face of the lower roll filter. As the dispersed filtrate flows in the roll filter downward in the axial direction, the dust and foreign matter particles contained therein are filtered out and pass through the outlet of the case bottom portion from the lower end surface of the roll filter to become a clean liquid and flow out.

Since the filtrate ejected at a predetermined pressure from the upper end of the ejection pipe collides with the upper collision plate, and is almost evenly dispersed on the upper surface of the roll filter, dust is concentrated at a specific point of the roll filter and clogged in a short time. Since it does not generate | occur | produce, a filtrate can be filtered efficiently over a long period of time.

In one embodiment of the present invention, a disc-shaped deodorizing filter is attached between the lower surface of the roll filter and the bottom surface of the case.

In this embodiment, since a deodorant filter is attached between the lower surface of a roll filter and the case bottom surface, and the filtrate filtered by the roll filter can be deodorized effectively, compared with the case where a roll filter is impregnated with a deodorant, after use Filtrates such as cooking oil can be more strongly deodorized.

In one embodiment of the present invention, it is disposed so as to surround the injection pipe, the upper end is engaged with the lower surface of the fixed plate, and further provided with a connecting pipe having a screw on the lower outer periphery, the deodorizing filter, the lower end of the connecting pipe It has a screw which is screwed to the screw of the screw, and the hole which communicates with the said connection pipe in the substantially center, and hold | maintains the said roll filter between the said fixed plate.

In this embodiment, the upper end of the connecting tube is fitted to the lower surface of the fixing plate, the lower end of the connecting tube communicates with a hole approximately in the center of the deodorizing filter, and the screw at the lower end of the connecting tube is screwed into the screw of the deodorizing filter. The roll filter is sandwiched between the fixed plate and the deodorizing filter and held. Therefore, when the fixing plate attached to the inside of the cover via the impingement plate is attached to the case and taken out from the case, the deodorizing filter and the roll filter can be attached together with the fixing plate via the connecting pipe to take out the roll filter and The deodorizing filter can be easily attached and can be easily and reliably removed even when the roll filter is in close contact with the case due to the temperature of the filtrate or the ejection pressure.

The filtration system of the present invention includes one or more sealed filtration devices, a pump connected with a discharge pipe to the inlet, a temperature sensor for detecting the temperature of the filtrate, and a pressure sensor for detecting the pressure of the filtrate. An input device for inputting at least one of the at least one set point and a detection signal of the at least one sensor, and when the filtrate reaches an abnormal high temperature or high pressure, an alarm is generated and the pump is stopped. It is characterized by including the control device.

In the filtration system, the filtrate is pumped by a pump to a jet pipe of one or more sealed filtration devices, and at least one of the temperature and pressure of the filtrate is detected by a temperature sensor or a pressure sensor, and these sensors The detection signal is compared with the upper limit value input from the input device, and if the comparison result is abnormal high temperature or high pressure, the control device alerts and stops the pump. In other words, if the filtrate becomes abnormally high temperature or high pressure due to clogging or other causes of the roll filter, the user who is not aware of the abnormality by the alarm can immediately take a countermeasure and the filtration system will be forced to stop. In addition to being prevented in advance, it is also possible to centrally control a plurality of sealed filtration devices with one control device.

EMBODIMENT OF THE INVENTION Hereinafter, it demonstrates in detail by embodiment which shows this invention.

BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a longitudinal sectional view showing an embodiment of a sealed filtration device of the present invention. The sealed filtration device 1 includes a cylindrical case 2 having an inlet port 3 and an outlet port 4 of the filtrate at the center and periphery of the bottom 2a, respectively, and an upper end of the case 2. The cover 5 which seals the inside of the case detachably attached to (2b) and the sheet-shaped filter medium are wound up to have the center through hole 6a, and the outer peripheral surface is in contact with the inner periphery of the case, The roll filter accommodated 6 (refer to FIG. 5 (A)) and the lower end 7a. It connects to the said inlet port 3, and the upper end 7b protrudes from the upper end of the said center through-hole 6a, and extends on the central axis of the case 1, and has the blowoff pipe 7 provided.

In addition, as a material of the roll filter 6, although the cellulose fiber which has a wood pulp as a main component and the thing which mixed the synthetic fiber in the ratio suitable for this are used, recycled paper, old paper, toilet paper, etc. can be used according to a filtrate. . In addition, the roll filter adopts the dimension of the general JIS standard which should reduce manufacturing cost, and winds up by dense winding.

Moreover, the said sealing type filtration apparatus 1 is fixed to the front-end | tip of the bolt which screwed in the center of the inner surface of the cover 5, and roll filter 6 is carried out by colliding the filtrate liquid ejected from the upper end 7b of a jet pipe. The impingement plate 8 which disperse | distributes substantially evenly to the upper end surface 6b of this, and it is attached to this impingement plate 8 at intervals through the attachment rod 9, and the said injection pipe 7 to the center hole 10a. The upper end 7b of the () is inserted, and the lower outer periphery 10b is engaged with the inner core 11 of the roll filter 6, so that the flange portion 10c of the large diameter is attached to the upper face 6b of the roll filter. An annular fixed plate 10 for contacting and fixing the upper end of the roll filter 6, and a disc-shaped deodorizing filter 12 attached between the bottom face 6c of the roll filter 6 and the bottom face of the case 2. It is provided.

As shown in the top view of Fig. 4, the lid 5 has a T-shaped handle 13 protrudingly attached to the center of the outer surface, and the outer circumference is integral with the chamfer 2c of the upper outer circumference of the case. A chamfer portion 5a that forms a V-shaped wedge, wherein the wedge is a clamp consisting of a pair of semi-circular rings whose one end is connected by a hinge 15 and the other end is fastened by a screw bolt 16 ( 14, see Fig. 4), and is fastened from the outside, in close contact with the case 1 through the O-ring 19 to form a so-called pressure cooker structure.

The bolt 17 which fixed the impingement plate 8 at the lower end is screwed to the female threaded hole of the said handle 13, and loosens the stop nut 18 screwed to the inner surface side of the cover 5, and rotates it. By advancing and retracting by this, the collision board 8 and the fixed board 10 can be adjusted with a roll filter according to height. On the other hand, the O-ring 20 is attached to the inner surface of the center hole 10a of the fixed plate 10, the lower surface of the flange portion 10c, and the lower outer peripheral surface adjacent thereto. In this way, when the case 1 is sealed with the lid 5, the fixing plate 10 seals the outer periphery of the center through hole 6a of the roll filter and the blowoff pipe 7 with liquid airtightness, Leaking into the center through hole 6a is prevented, and deformation of the roll filter 6 is prevented, while taking out the roll filter 6 when the cover 5 is removed.

The deodorizing filter 12 is formed by forming a stainless steel metal mesh into a disk-shaped basket, and filling small baskets or powders such as activated clay, activated carbon, and dormarin into the basket, and at the time of fixing the roll filter 6. It is to be able to withstand the pushing force which acts from the fixed plate 10 fully. On the outer side of the deodorizing filter 12, a partition cylinder 21 having a slight gap from the inner surface of the case 1 and having an upper and lower surface opened is disposed so that its upper edge penetrates into the lower surface 6c of the roll filter 6, The long-term use prevents the flow of the unfiltered filtrate toward the outlet 4 through a gap that may occur between the outer circumference of the roll filter 6 and the inner circumference of the case 1.

The lower end 7a of the jet pipe 7 penetrates the inlet port 3 in a liquid-tight state and projects downward, and the discharge pipe 25 of the pump 24 is connected to the lower end 7a through the nipple 22. ) Is connected, and the pump 24 pumps the filtrate taken from the strainer 26 past the suction pipe 23 to the jet pipe 7 at a pressure of about 1 kgf / cm ² as shown by the arrow in the figure.

The effect | action of the sealing type filtration apparatus of the said structure is demonstrated next.

When the pump 24 is started, the filtrate of the tank (not shown) is blown through the strainer 26 and the suction pipe 23, and passed through the discharge pipe 25 as shown by the arrow in FIG. 7). The filtered filtrate is ejected from the upper end 7b of the ejection pipe 7 extending on the central axis of the case 1, and hits the upper collision plate 8 to face radially downward, and roll filter ( It is distributed approximately evenly on the upper end surface 6b of 6). The dispersed filtrate is obtained by flowing the inside of the roll filter 6 with the dust and foreign particles contained therein and being filtered by the roll filter 6, and the liquid is clean from the lower end surface 6c of the roll filter. And outflow.

The filtrate to be ejected is substantially evenly dispersed in the roll filter upper end surface 6b by the impingement plate 8, and the inside of the roll filter 6 flows down to every corner, so that dust and foreign matters as in the conventional filtration apparatus. The filtrate can be efficiently filtered over a long period of time without concentrating the particles at a specific point of the filter and causing clogging in a short time.

In addition, the fixed plate 10 having the plurality of O-rings 20 is positioned by the retreat of the bolt 17, and the center of the roll filter 6 in the sealing of the case 1 by the lid 5. Since it fits in the core 11 and the blowing pipe 7, and inserts the deodorizing filter 12 which withstands a pressing force, it presses against the case bottom part 2a and seals the upper opening of the center core 11, The filtrate jetted from the tube 7 does not leak into the center core 11, and deformation of the roll filter 6 at the time of use is prevented, as well as disposed outside the deodorizing filter 12. Since the upper edge of one partition cylinder 21 penetrates into the lower surface 6c of the roll filter, it blocks the flow of unfiltered liquid passing through the gap that may occur between the outer circumference of the roll filter and the inner circumference of the case 1. The clean liquid containing no dust or the like can flow from the outlet 4.

The clean liquid flowing out of the lower end surface 6c of the roll filter continues to enter the deodorizing filter 12 as shown by the arrow, and is deodorized by activated clay, activated carbon, tourmaline, which is a functional contaminant filled in a basket, which is strange. It becomes a liquid without odor and flows out from the outlet port 4. Unlike the conventional example in which the deodorant is impregnated into the roll filter, the deodorant filter 12 is attached to the filter separately from the roll filter 6 so that the deodorant may be suited to the use of a filtrate such as edible oil or fish fish, for example. Not only can be easily changed, but the filtrate can be more strongly deodorized than in the prior art. In addition, the deodorizing filter 12 is suitable for use with frying oils that tend to cause odor due to changes in oil gas or oil components and oxidation by heating.

When the filtrate is relatively high at 100 to 150 ° C, such as fried oil, the impingement 8 not only impinges the ejected filtrate directly on the case 1, but also the heat dissipation plate 8. Because of this, even if the user touches the case 1, no image is burned.

Moreover, since the small diameter pipe is used for the blowing pipe 7, it is possible to increase the cross-sectional area of a roll filter, and to raise filtration efficiency.

FIG. 2 shows a cross section of a sealed filtration device similar to that of FIG. 1 using a roll filter 27 that is shorter than the roll filter 6 of FIG. 1, and the same reference numerals are given to the same members as those of FIG. do.

As shown in the perspective view of FIG. 5 (B), the roll filter 27 is formed by winding a sheet made of cellulose fiber or the like around the center core 28, and has a partition cylinder (in the case 1). 21 is placed on a support disc 30 having a plurality of water removal holes over a cylindrical die sheet 29 mounted for height adjustment. As described above with reference to FIG. 1, the upper edge of the partition cylinder 21 penetrates into the lower end surface of the die sheet 29, and the edge portion of the outer circumference of the support disc 30 is the lower surface of the roll filter 27. In order to penetrate the structure, the outflow of the microfiltration liquid, which leaves a gap between the inner circumference of the case and the outer circumference of the roll filter, is prevented. The height of the die sheet 29 is set so that when the case 1 is sealed with the lid 5, the fixing plate 10 is sealed to the top opening of the center core 28.

The sealed filtration device also has the same structure as the device of FIG. 1 except that the roll filter 27 is short, and thus operates in the same manner as described above with reference to FIG.

FIG. 3 shows a cross section of a sealed filtration device similar to that of FIG. 1 using a roll filter 31 with the central core 11 of the roll filter 6 of FIG. 1 removed, and the same member as that of FIG. The description is omitted by attaching a sign.

As shown in the perspective view of FIG. 5C, the roll filter 31 is formed of a sheet made of cellulose fiber or the like so as to have a center through hole 31a of the inner diameter fitted to fit the ejection pipe 7. It is made by winding and pasting and housed in the case 1 as shown in FIG. The fixing plate 32 is short, unlike the fixing plate 10 of FIGS. 1 and 2, and fits the O-ring 20 to the inner circumference and the bottom surface 32b of the center hole 32a, respectively, to the lid 5. When the case 1 is sealed, the fixing plate 32 is pressed against the center of the upper end face 31b of the roll filter so that the outer periphery of the ejection pipe 7 and the center through hole 31a of the roll filter 31 are closed. The filtrate is prevented from leaking into the gap that can occur between weeks.

The sealed filtration device also has the same structure as the device of FIG. 1 except that the roll filter 31 has no center core, and thus operates as described in FIG. 1, and exhibits the same effect.

In addition, in this sealed filtration apparatus, since the center through-hole 31a of the roll filter 31 is fitted in the blowing pipe 7, compared with embodiment of FIG. 1, FIG. 2, the cross-sectional area of a roll filter is changed. It can increase and raise filtration efficiency further.

In addition, in the above embodiment, although the case where the object of filtration is a liquid was stated, the sealed filtration apparatus of this invention can be used also for the purification process of the wet air containing exhaust gas.

Fig. 6 is a schematic block diagram showing an example of the filtration system of the present invention using the sealed filtration device of Figs.

The filtration system includes a sealed filtration device 1, a temperature sensor 34 and a pressure sensor 35 provided in the discharge pipe 25 of the pump for feeding the filtrate to the jet pipe 7 of the device. It consists of a control circuit 33.

The control circuit 33 includes a sensor amplifier 36 for amplifying a detection signal from the temperature and pressure sensors 34 and 35, and an A / D converter 37 for converting the output of the sensor amplifier 36 into a digital signal. ), The keyboard 41 as an input device for inputting the upper limit temperature and the upper limit pressure, the temperature and pressure alarms 39 and 40 that emit an alarm or light when the temperature and pressure of the filtrate are abnormal, and the A / D The temperature and pressure of the filter displayed by the signal input from the transducer 37 are compared with the upper and upper pressures input from the keyboard to operate the temperature or pressure alarm 39 or 40 when the former is over the latter. At the same time, as a control device for stopping the pump 24, the peripheral interface 43 for transmitting and receiving signals to and from the computer 38, the external connection device, the peripheral interface 43, the keyboard 41, and the computer 38 are connected. In addition to controlling the transmission and reception of signals with It consists of a controller 42.

The filtration system operates as follows.

When the filtrate supplied by the pump 24 is being filtered by the sealed filtration device 1, the temperature or pressure of the filtrate in the discharge pipe 25 may be increased due to clogging of the roll filter 6 or other causes. When the upper limit value set by the keyboard 41 is exceeded, the computer 38 comparing the upper limit value with the detection signal input through the sensor amplifier 36 and the A / D converter 37 determines that the abnormal high temperature or abnormal high pressure is high. Thus, the temperature alarm 39 or the pressure alarm 40 is operated to emergency stop the pump 24.

By doing so, the user who has found an abnormality in the alarm issued by the temperature alarm 39 or the pressure alarm 40 can immediately check the defective part of the filtration system and take countermeasures.

In addition, an accident or the like due to continued operation is prevented by an emergency stop of the pump 24.

In the above embodiment, the case where the computer 38 controls a single sealed filtration device has been described, but the computer 38 detects signals from temperature sensors or pressure sensors attached to the plurality of sealed filtration devices. On the basis, it can likewise be configured to activate the alarm of the strangely sealed filtration device to stop the pump. Therefore, according to such a structure, it is possible to centrally control a plurality of sealed filtration devices with one computer, and it is necessary to always process a large amount of filtrates such as waste oil in a hotel or engine oil in an automobile repair shop. It is suitable to use when there is.

7 is a longitudinal sectional view showing another embodiment of the sealed filtration device of the present invention, except that the fixed plate 10 and the deodorizing filter 12 are connected by a connecting pipe 44. In addition, since it is the same structure as the sealed filtration apparatus of FIG. 1, the same code | symbol is attached | subjected to the same member as FIG. 1, and description is abbreviate | omitted.

The connecting pipe 44 has a larger diameter than the injection pipe 7 and is arranged concentrically so as to surround the injection pipe 7, and the upper end 44a is located in the center hole 10c of the bottom surface of the fixed plate 10. On the other hand, it has a male screw 44b (see Fig. 8A) on the lower circumference. The deodorizing filter 12 has a large diameter hole having an internal thread 12a screwed into the male screw 44b of the connecting pipe 44 at its inner circumference, and is provided below the hole, and the blowoff pipe 7 is dense. It has a small diameter hole 12b (see Fig. 8A) that is inserted through the center.

The operation of the sealed filtration device of the above configuration will be described with reference to Figs. 8A and 8B.

It is attached to the inner surface of the cover 5 through the bolt 17, the impingement plate 8, and the attachment rod 9, and shown in the center hole 10d of the bottom surface of the fixing plate 10, as shown in Fig. 8A. As shown in FIG. 7, the upper end 44a of the connection pipe 44 is fitted, the roll pump 6 is inserted from the lower end of this connection pipe 44, and the roll pump 6 is shown in FIG. After fitting the center core 11 of) into the lower outer periphery (10b) of the fixing plate 10, the upper surface (6b) of the roll filter 6 in contact with the flange portion (10c) of the fixing plate 10, The male screw 44b which protrudes from the lower end of the roll filter 6 is screwed and fastened to the female screw 12a of the center hole of the deodorizing filter 12, and as shown in FIG.8 (B), the fixed plate ( The roll filter 6 is pinched | interposed and hold | maintained between 10) and the deodorization filter 12, and the cover 5, the roll filter 6, and the deodorization filter 12 are integrated.

Next, the integrated roll filter 6 and the deodorization filter 12 are inserted from the upper end opening of the case 2, and the blowoff pipe 7 protruding toward the center in the case 2 is removed from the deodorization filter 12. When the upper opening of the case 2 is sealed with the lid 5 and the clamp 14 through the diameter hole 12b and the center hole 10 of the fixing plate 10, the roll filter 6 and the deodorization filter 12 are sealed. The mounting of is finished (see Fig. 7). Therefore, this sealing filtration device has the advantage that the roll filter 6 and the deodorizing filter 12 can be easily attached at the same time as the lid 5 is attached.

When it is necessary to remove the roll filter 6 due to clogging or the like, the clamp 14 is pulled out and the lid 5 is pulled up by the handle 13. In doing so, the roll filter 6 and the deodorization filter 12 integrated with the lid 5 are also pulled up together and pulled out above the case 2. Therefore, there is an advantage that the roll filter 6 can be easily and reliably removed even when the roll filter 6 is in close contact with the case 2 due to the high temperature or the high ejection pressure of the filtrate during operation.

Moreover, in the said embodiment, although the external thread 44b was attached to the outer periphery of the lower end of the connection pipe 44, and the internal thread 12b was attached to the center of the deodorization filter 12, respectively, the external thread was attached to the connector and the external thread was attached to the deodorization filter. It is also possible to attach.

As apparent from the above description, the sealed filtration device of the present invention accommodates a roll filter formed by winding a sheet-like filter medium in a case having an inlet and an outlet at a bottom thereof and sealed at a top thereof with a removable lid, An impingement plate protruded from the upper end of the center through hole of the roll filter connected to the inlet, and above the upper end of the spout pipe, is provided with a collision plate attached to the inner surface of the lid so as to be adjustable in the axial direction of the case. The annular fixing plate is attached to the impingement plate through the attachment member, and the filtrate is collided with the impingement plate to surround the upper end of the spout pipe and fix the upper end of the roll filter with the fixing plate. It can be distributed approximately evenly on the top surface of the dust, so that dust does not concentrate on a specific part of the roll filter and cause clogging in a short time. , Can be efficiently filtered by the over piyeo gwaaek a long period of time.

In one embodiment of the sealed filtration device of the present invention, since the deodorant filter is attached between the lower surface of the roll filter and the bottom of the case, the filtrate filtered in the roll filter can be effectively deodorized. Compared with the case of impregnation, filtrates such as edible oil after use can be more strongly deodorized.

In one embodiment of the sealed filtration device of the present invention, the upper end of the connecting tube is fitted to the lower surface of the fixing plate, the lower end of the connecting tube communicates with a hole approximately in the center of the deodorizing filter, and the screw at the lower end of the connecting tube is deodorized. Since the roll filter is screwed into the screw of the filter and held between the fixed plate and the deodorizing filter, the roll filter and the deodorizing filter can be taken out by attaching the deodorizing filter and the roll filter together with the fixing plate through a connecting pipe. It is possible to easily and reliably remove even if the roll filter is in close contact with the case by the temperature of the filtrate or the ejection pressure.

In the filtration system of the present invention, the filtrate is fed to a jet pipe of one or a plurality of sealed filtration devices by a pump, and at least one of the temperature and pressure of the filtrate is detected by a temperature sensor or a pressure sensor, The detection signal of these sensors is compared with the upper limit value input from the input device, and if the comparison result is an abnormal high temperature or high pressure, the control device notifies the alarm and stops the pump. In addition, since the filtration system is forcibly stopped, not only the risk is prevented but also it is possible to centrally control the plurality of sealed filtration devices with one control device.

Claims (4)

A cylindrical case having an inlet and an outlet of the filtrate at the bottom, A cover detachably attached to the top of the case to seal the inside of the case, A roll filter formed by winding the sheet-like filter material so as to have a through hole, and having an outer circumferential surface in contact with the inner circumference of the case; A spout pipe which connects a lower end to the inlet, protrudes the upper end from the upper end of the through hole of the roll filter, and attaches it to the case, and ejects the filtrate being pumped; An impingement plate attached to the inner surface of the cover so as to be adjustable in the axial direction of the case and distributing the filtrate ejected to the upper surface of the roll filter by collision; A sealing filtration device comprising an annular fixing plate which is attached to the impingement plate at intervals through an attachment member and is inserted into the jet pipe and fixes the roll filter. The sealed filtration device according to claim 1, wherein a disc-shaped deodorizing filter is attached between the bottom surface of the roll filter and the bottom surface of the case. According to claim 2, It is disposed so as to surround the injection pipe, the upper end is fitted to the lower surface of the fixing plate, further comprising a connecting pipe having a screw on the lower outer periphery, the deodorizing filter, the screw of the lower end of the connecting pipe A sealed filtration device having a screw screwed in the center and a hole communicating with the connecting pipe at approximately the center, and holding the roll filter sandwiched between the fixing plates. The pressure of the filtrate and the temperature sensor which detects the temperature of a filtrate, the pump which connected the discharge pipe to the said inlet, the one or several sealing type filtration apparatus as described in any one of Claims 1-3, On the basis of at least one of the pressure sensors to be detected, the input device for inputting the set value, and the detection signal of the at least one sensor, an alarm is issued when the filtrate becomes abnormally high temperature or high pressure, Filtration system comprising a control device for stopping the pump.