JP2001347298A - Solid separation apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To separate a solid by keeping a vacuum state in a separation means of a solid separation apparatus. SOLUTION: In constitution such that a solid-containing liquid is supplied into the separation means 2 from a supply port to be separated into a liquid and a solid under a heating and vacuum condition and the solid is discharged from a solid discharge port T2, a solid recovery passage 7 is connected to the solid discharge port T2, and a first airtight valve 10, a first accumulation part 15 and a second airtight valve 13 are provided successively from the solid discharge port T2 and, in such a state that the first airtight valve 10 is opened and the second airtight valve 13 is closed, the solid discharged from the separation means 2 is recovered through the solid recovery passage 7 through a process for supplying the solid to the first accumulation part 15 held to a vacuum state, a process closing the first airtight valve 10 to bring the first accumulation part 15 where the soild is present to an atmospheric pressure state and a process opening the second airtight valve 13 in such a state that the first airtight valve 10 is closed to discharge the solid in the first accumulation part 15.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a solid separation apparatus, and more particularly to a solid separation apparatus for separating a solid and a liquid from a liquid containing the solid and recovering at least the solid therein.

[0002]

BACKGROUND OF THE INVENTION Organic solvents are used in many processes in the coatings industry, and the treatment of waste containing such organic solvents has become an important issue. For this reason, for example, a waste treatment apparatus using a thin film distillation machine has been proposed. Hereinafter, the processing operation of this conventional waste disposal apparatus will be described.

[0003] First, waste is supplied from the upper part of the apparatus to the inside of a cylindrical casing maintained in a reduced pressure state by a vacuum pump. Here, a hollow jacket is provided outside the casing, the inside of the casing is heated by pressurized steam, and a shaft equipped with a plurality of scrapers is rotated inside the casing. Therefore, the waste is applied in a thin film state to the heated inner wall of the casing by the centrifugal force of the shaft, and the solvent evaporates from the waste due to the reduced pressure and heating inside the casing. Finally, the dried solid is peeled off by the rotating scraper and discharged from the lower part of the casing. In addition to the above-mentioned prior art, there has been proposed an apparatus that separates a solid and a liquid from a liquid containing a solid such as waste paint by heating under reduced pressure to recover the solid.

[0004]

However, the above-mentioned solid separation apparatus has the following problems. When the separated solid is discharged from the solid discharge port, the inside of the separation device is in a reduced pressure state. Therefore, once the solid discharge port is brought into the atmospheric pressure state, it is necessary to take out the solid. For this reason, it takes time and effort to bring the inside of the separation device into a reduced pressure state and then to an atmospheric pressure state, resulting in poor productivity.

In order to discharge solids without returning the inside of the separation device to atmospheric pressure, a pipe is connected to the discharge port of the separation means, and two pipes are provided above and below the pipe at an interval. When discharging from, the upper valve is opened with the lower valve closed and the solid matter is once held in the pipe between the upper and lower valves,
Next, there is a method of collecting solids from inside the pipe by closing the upper valve and opening the lower valve, but when the lower valve is opened while the inside of the pipe is depressurized, air is rapidly blown. The accumulated solids may be soared that they cannot be easily discharged, or the opening of the lower valve may be difficult to operate due to a large torque, and in some cases, the seal of the lower valve may be damaged.

[0006] The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a solid separation apparatus capable of solving the above-mentioned problems. An example of a specific purpose is as follows. (a) In a solid separation apparatus for separating a solid under heating and reduced pressure conditions, the solid can be taken out while maintaining the reduced pressure in the separation means. (b) The solid material can be continuously taken out from the separation means. (c) It is possible to reduce the labor required for the maintenance of the solid separation device and to operate it stably for a long period of time. It should be noted that the problems of the invention other than those described above and the means for solving the problems will be described in detail in the description in the following specification.

[0007]

The present invention will be described below with reference to, for example, FIGS. 1 to 5 showing an embodiment of the present invention. In the first invention, a liquid or a slurry containing a solid is supplied from a supply port T1, and the liquid is heated and stirred under reduced pressure to evaporate the liquid to separate it from the solid, and at least the solid is discharged as a solid. In the solid separation apparatus for recovering from the outlet T2, a solid recovery passage 7 is connected to the solid discharge outlet T2, and the first airtight valve 9 is connected to the solid recovery passage 7 from the solid discharge outlet T2 side. 1
A storage unit 15 and a second airtight valve 13 are provided, and the first storage unit 1 is provided.
5 is characterized in that a gas supply port 18 is provided and a decompression device 20 is connected so that a decompression state and an atmospheric pressure state can be selected.

In the second invention, a second storage section 16 is provided downstream of the solid matter discharge port T2 and upstream of the first airtight valve 10,
At least during the time for discharging the solid matter accumulated in the first accumulation part 15, the solid matter discharged from the solid matter discharge port T2 is accumulated in the second accumulation part 16.

According to a third aspect of the present invention, a first protection valve 9 for suppressing a decrease in the airtightness of the airtight valve due to a solid matter is connected to a position upstream of the first airtight valve 10, and the solid matter prevents the airtight valve from being closed. A second protection valve 12 for suppressing a reduction in the airtight action is connected to a position on the upstream side of the second airtight valve 13.

A fourth invention is directed to a first protection valve 9 and a first airtight valve 1.
In the set of 0, the set of the second protection valve 12 and the second airtight valve 13, when the solid matter accumulated on the protection valves 9 and 12 is moved downstream by opening the valve, the airtight valve and the protection valve are arranged in this order. When the valve is opened and the valve is closed while the solid is moving in the solid recovery passage 7, the valve is closed in the order of the protection valve and the airtight valve. The fifth invention is characterized in that the capacity of the first storage section 15 is configured to be larger than the capacity of the second storage section 16.

Further, the configuration of the above invention will be described. As the liquid containing the solid, a slurry,
Examples of the waste include a liquid. Examples of the waste containing the liquid include waste paint and activated sludge.
As the separating means, a means provided with screw blades 24 and 25 shown in FIG. 5 described later, or a known separating mechanism can be adopted. In addition, it is preferable that the movement of the solid in the solid recovery passage 7 is performed by gravity. Further, the solid recovery passage 7 is provided vertically, and the solid discharged from the solid discharge outlet T2 naturally falls and solids. A configuration that can be discharged from the outlet of the material recovery passage 7 is preferable. By moving the solid material by gravity, it is possible to eliminate the need for a transporting means or the like, thereby making it possible to configure the device at low cost.

According to a second aspect of the present invention, there is provided a solid discharge port T
First, the solid discharged from the second storage 2 is stored in the first storage unit 15, and the solid discharged from the solid discharge port T <b> 2 is discharged at least during the time for discharging the solid stored in the first storage 15. It is preferable that the data is stored in the second storage unit 16. However, after the solid matter discharged from the solid matter discharge port T2 is first accumulated in the second accumulation part 16, the first airtight valve 10 is opened, and the solid matter accumulated in the second accumulation part 16 is decompressed. First storage unit 1
5, the first airtight valve 10 is closed, the first storage section 15 is brought to the atmospheric pressure state, and then the second airtight valve 13 is opened to discharge solid matter.

Further, in addition to the time during which the solid matter accumulated in the first accumulation section 15 is discharged, the time during which the first accumulation section 15 shifts from the atmospheric pressure state to the reduced pressure state (for example, FIG.
(E) is also configured to accumulate solid matter discharged from the solid matter discharge port T2 in the second accumulation part 16,
Solid matter can be continuously and constantly discharged from the separation means 2. In the fifth aspect, it is preferable that the volume of the first storage unit 15 is set to be about twice the volume of the second storage unit 16.

[0014]

In the first invention, when discharging and collecting solids from the solid discharge port T2, the first airtight valve 10 is opened with the second airtight valve 13 closed and the first airtight valve 10 is opened.
The solids fall and accumulate in the accumulation unit 15. When a predetermined amount of solids accumulates, the first airtight valve 10 is closed, and gas is supplied from the gas supply port 18 into the first storage section 15 where solids are present, to be in an atmospheric pressure state. Next, when the second hermetic valve 13 is opened with the first hermetic valve 10 closed, the solid matter is discharged into the first storage section 15 to the outside under the atmospheric pressure. As described above, by discharging the solid matter from the reduced pressure state to the atmospheric pressure state in the first accumulation unit 15, the solid matter is easily discharged without rising. When the solid matter is discharged, the second airtight valve 13 is closed with the first airtight valve 10 closed, and the inside of the first storage section 15 is returned to a reduced pressure state by the pressure reducing device 20. Thereafter, this operation is repeated.

According to the second aspect of the invention, since the solid discharged from the solid discharge port is stored in the second storage section at least during a period of discharging the solid stored in the first storage section. Also, the solids can be continuously discharged from the solids discharge port of the separation means 2 during the time for discharging the solids stored in the first storage unit. According to the third aspect, since the first protection valve and the second protection valve can suppress a decrease in the airtightness of the first airtight valve and the second airtight valve, the airtightness of the first airtight valve and the second airtight valve can be suppressed. The labor required for maintenance for maintaining the pressure can be reduced, and the operation can be stably performed for a long period of time.

According to the fourth aspect, by performing the valve opening and closing operations as described above, the possibility that solid matter adheres to the airtight valve can be reduced. In the fifth invention,
Since the volume of the first storage unit is configured to be larger than the volume of the second storage unit, when the solid matter stored in the second storage unit is moved to the first storage unit, the solid-state valve and the protection valve are used. It is possible to reduce a load such as an impact due to the movement.

[0017]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a diagram showing a first embodiment of the present invention. In the first embodiment, a waste treatment apparatus is shown as an example of an apparatus including a solid matter separation apparatus. This waste treatment apparatus is used when treating liquid or slurry waste discharged from a paint production facility, for example, waste paint, waste solvent, concentrated waste solvent, waste varnish, and the like.

As shown in FIG. 1, the waste treatment apparatus comprises an adjusting tank 1, separating means 2 having a motor M for driving a separating mechanism, a condenser 3, a solvent collecting tank 4, a solid collecting tank 5, a raw material supply pump. P1, vacuum pump P2, solution recovery pump P
3. It is composed of a solid material recovery passage 7. The separating means 2 has a separating mechanism disposed in the casing, and the casing has a supply port T1, a solid substance discharge port T2 for discharging the separated solid substance, and a vent port T3 for discharging the gas containing the liquid component. Have.

An adjusting tank 1 is connected to a supply port T1 of the separating means 2 via a raw material supply pump P1. The vent T3 of the separating means 2 is connected to the condenser 3. The condenser 3 is connected to a vacuum pump P2 and to a solution recovery tank 4 via a solvent recovery pump P3. The solid discharge port T2 of the separation means 2 is connected to the solid recovery tank 5 via a solid recovery passage 7. The solid arrows in FIG. 1 indicate predetermined pipes.

First, the overall operation of the waste disposal apparatus configured as described above will be described. The adjustment tank 1 adjusts the liquid or chiller waste to a predetermined solid content concentration, for example, a solid content concentration of 30 to 50%. The raw material supply pump P1 sends the waste adjusted to a predetermined solid content concentration from the adjustment tank 1 to the separation means 2. The vacuum pump P2 keeps the inside of the separation means 2 in a high vacuum state, for example, 6.7 to 13.3 kPa via the condenser 3. Separation means 2 is supplied with the waste whose solid content concentration is adjusted in the adjustment tank 1 from the supply port T1, and volatilizes and supplies the solvent from the waste while heating and stirring in a vacuum state by a separation mechanism described later. Transports waste from the mouth T1 to the solids outlet T2,
Separate into solids and volatile solvent. Capacitor 3
Is supplied with the solvent volatilized in the separation means 2 through the ventilation port T3 to liquefy the volatilized solvent. The solvent recovery pump P3 sends the liquefied solvent to the solvent recovery tank 4, and the solvent is recovered.

Next, the configuration of the solid matter recovery passage 7 will be described. As shown in FIG. 1 and FIG.
Is the first discharge pipe 8 connected to the solid discharge port T2.
A first protection valve 9 provided at the lower end of the first discharge pipe 8, and a first airtight valve 10 provided downstream of the first protection valve 9.
A second discharge pipe 11 connected to the downstream side of the first airtight valve 10, a second protection valve 12 provided at a lower end of the second discharge pipe 11, and a second protection valve 12 provided downstream of the second protection valve 12. And the second airtight valve 13.

The first protection valve 9 prevents the solid matter from adhering to the hermetic sealing surface of the first hermetic valve 10 so that the first hermetic valve 1
0, and the second protection valve 12
The second airtight valve 13 is provided to prevent solid matter from adhering to the airtight seal surface of the airtight valve 13 and protect the second airtight valve 13. The first airtight valve 10 is a valve for maintaining the pressure in the upstream side of the first airtight valve 10 when the inside of the second discharge pipe 11 is brought to the atmospheric pressure state. The second airtight valve 13 is a valve for maintaining a space downstream of the first airtight valve 10 and upstream of the second airtight valve 13, in this embodiment, in the second discharge pipe 11 in a reduced pressure state. The second hermetic valve 13 opens the first hermetic valve 10 and, in a state where the space inside the first discharge pipe 8 and the space inside the second discharge pipe 11 communicate with each other, the space inside the first discharge pipe 11 And a space for maintaining the pressure in the space inside the second discharge pipe 11 in a reduced pressure state.

In this embodiment, the space inside the first discharge pipe 8 constitutes the above-mentioned second storage section 16, and the space inside the second discharge pipe 11 constitutes the above-mentioned first storage section 15. At a predetermined position of the first discharge pipe 8, a level sensor S1 is installed. This level sensor S1 is
The protection valve 9 and the first airtight valve 10 are opened, and the first discharge pipe 8 is opened.
This is for detecting the residual state when the solid matter in the liquid remains in the first discharge pipe 8. If solid matter is detected in the first discharge pipe 8 even after a certain period of time has elapsed after the first protection valve 9 and the first airtight valve 10 have opened, an alarm is issued by a predetermined alarm device (alarm siren, alarm lamp, etc.). Is issued. A similar level sensor S2 is installed in the second discharge pipe 11.

The second discharge pipe 11 has a gas supply device 19 connected to a gas supply port 18 for supplying air or nitrogen.
And a decompression device 20 such as a vacuum pump for decompressing the inside of the second discharge pipe 11 so that the inside of the second discharge pipe 11 can be selected between a depressurized state and an atmospheric pressure state. In this embodiment, a gas discharge port is provided in the second discharge pipe 11 and the pressure reducing device 20 is connected. However, a switching valve such as a three-way valve is connected to a gas pipe connected to the gas supply port 18, and one of the switching valves is used. The port may be connected to the gas supply device 19 and the other port may be connected to the pressure reducing device 20, respectively.

The first and second protection valves 9 and 12 and the first and second airtight valves 10 and 13 are designed so that the passage area of the discharge pipe is not reduced by the protection valve or the airtight valve. It is composed of equal things. In addition, the rotation shaft of the valve body and the valve body in the valve-opening posture do not protrude from the passage portion. In the actual machine, a cut-off valve manufactured by Osaka Kikai Seisakusho Co., Ltd. was used as the protection valve, and a non-sliding ball flap valve manufactured by the company was used as the airtight valve. However, the present invention is not limited to the above type.

With reference to FIG. 3 and FIG. 4, the solid matter recovery processing will be described focusing on the opening and closing operation of the valve. Note that FIG.
In FIG. 4 and FIG. 4, the state in which the valve is closed is indicated by a cross. First, as shown in FIG. 3A, the first protection valve 9 and the first airtight valve 10 are opened, and the second protection valve 12 and the second 2 With the airtight valve 13 closed, the solid matter discharge port T2 of the separation means 2
Solid matter discharged from the second discharge valve 11 (see FIG. 2) in a constant amount per unit time is accumulated on the second protection valve 12.

Next, as shown in FIG. 3 (B), when a certain amount of solid matter is accumulated on the second protection valve 12 after a certain period of time, the first protection valve 9, the first airtight valve, 10 is closed. At this time, in order to prevent solids falling from the upstream from adhering on the airtight sheet surface of the first airtight valve 10, the first
The valve closing operation is performed in the order of the protection valve 9 and the first airtight valve 10. Second
The amount of the solid matter accumulated on the protection valve 12 is set to an amount that does not cause the solid matter to solidify due to its own weight or form a bridge and hinder the passage of the discharge pipe. First protection valve 9, first
The solid matter continuously discharged from the separation means 2 from the time when the airtight valve 10 is closed is the closed first protection valve 9.
Accumulate on top.

Next, in the state shown in FIG.
Since the inside of the discharge pipe 11 is in a depressurized state, as shown in FIG. 3C, air, nitrogen gas and the like are supplied from the gas supply port 18 to bring the inside of the second discharge pipe 11 into an atmospheric pressure state. Next, after confirming that the inside of the second discharge pipe 11 has reached the atmospheric pressure state, as shown in FIG.
3. The second protection valve 12 is opened. At this time, in order to prevent solids falling from the upstream from adhering to the airtight sheet surface of the second airtight valve 13, the valve opening operation is performed in the order of the second airtight valve 13 and the second protection valve 12. By opening the second airtight valve 13 and the second protection valve 12, the solid matter in the second discharge pipe 11 is collected by gravity into a predetermined solid matter collecting tank 5 (see FIG. 2).

Next, after the solid material discharging process is completed,
As shown in FIG. 4E, the second protection valve 12 and the second airtight valve 13 are closed in this order. At this time, the second discharge pipe 11
Since the inside is in an atmospheric pressure state, the pressure reducing device 20 (see FIG. 2) is driven to reduce the pressure in the second discharge pipe 11 to the same degree as the reduced pressure state of the separation means 2.

Next, after confirming that the degree of vacuum in the second discharge pipe 11 has become equal to the degree of vacuum in the separating means, the first airtight valve 10 and the first protection valve 9 are opened in this order. Then
Between the state where the first protection valve 9 and the first airtight valve 10 are closed (the state of FIG. 3B in the previous step) and the time they are open,
Since the solid matter is accumulated on the first protection valve 9 as shown in FIG. 4 (E), the solid matter accumulated on the first protection valve 9 is opened by opening the first airtight valve 10 and the first protection valve 9. Drop on the protection valve 12. At the same time, the solid matter discharged from the separating means also falls on the second protection valve 12 and accumulates. Thereafter, if the first protection valve 9 and the first airtight valve 10 are closed, FIG.
Since the state of (B) is reached, the same processing may be continued thereafter. Opening and closing operation of the valve and the second discharge pipe 1 as described above
By the operation of adjusting the pressure in 1, solid substances can be constantly and continuously discharged from the solid substance discharge port of the separation means.

The amount of discharge per unit time from the solid discharge port is taken into consideration so that the processing shown in FIGS. 3 and 4 can be performed in consideration of the time required for adjusting the pressure in the second discharge pipe 11. Needless to say, the capacity of the first discharge pipe 8 and the capacity of the second discharge pipe 11 are appropriately set.

FIG. 5 is a schematic diagram showing the internal structure of the separating means shown in FIG. 1. Hereinafter, the specific structure of the separating means will be described with reference to FIG. As shown in FIG. 5, the separating means includes a casing 21 having a hollow structure, a pair of hollow shafts 22 and 23, and a pair of hollow screw blades 24.
25. Hollow shafts 22 and 23 are casing 2
1 are rotatably and horizontally installed in parallel and rotate in opposite directions to each other. Hollow screw blade 24/25
Are hollow shafts 22 corresponding to mesh with each other.
23 and the inside thereof communicates with the inside of the hollow shafts 22 and 23.

The inside of the casing 21 is maintained in a high vacuum state as described above, and the insides of the hollow shafts 22 and 23 and the hollow screw blades 24 and 25 and the casing 21 are formed.
A heating medium, for example, a heating medium oil of 150 to 200 ° C. is supplied from a heating medium device (not shown) to the hollow portion. The waste supplied into the separating means 2 is the hollow screw blade 2
By the rotation of 4.25, the liquid is stirred while being sent from the upstream side to the downstream side, that is, in the phase advancing direction (from left to right in FIG. 5). At this time, the waste is in a high vacuum state and the hollow shafts 22 and 23 and the hollow screw blades 24.2
Heated by the heating medium flowing through the inside of the casing 5 and the hollow portion of the casing 21, the solvent is volatilized from the waste. As a result, the solvent can be efficiently volatilized at high vacuum and high temperature, and even when the solvent is volatilized and the solid content concentration becomes high, the solvent is finally stirred while being sufficiently stirred by the pair of hollow screw blades 24 and 25. And solids can be sufficiently separated into a solid and a solvent to treat even waste having a high solid content.

It is also possible to provide a tangential chordal notch at each predetermined angle of the outer peripheral edges of the hollow screw blades 24 and 25. In this case, the waste above the hollow screw blades 24, 25 is removed from the lower portion of the hollow screw blades 24, 25 when the cutout of one hollow screw blade faces the valley of the other hollow screw blade. And the transportation of waste is temporarily stopped. The stopped waste is not conveyed, and after one of the hollow screw blades makes one rotation, is pushed out by the waste conveyed from behind the portion having no notch, and is conveyed further forward. As a result, the residence time in the waste separation means can be sufficiently long, and the waste can be sufficiently separated into the solid and the solvent.

Further, a projection for a scraper may be provided on the outer peripheral surface of the hollow screw blades 24 and 25 behind the notch in the rotation direction. In this case, the waste pressed against the inner peripheral surface of the casing 1 is scraped off by the projection, and the friction of the waste on the outer peripheral surface of the hollow screw blades 24 and 25 is reduced as compared with the case without the projection. The reliability and life of the device can be improved.

Further, the level sensors S1 and S2 disposed on the first discharge pipe 8 and the second discharge pipe 11 include a capacitance type sensor, a vibration type level sensor, a radiation type level sensor, a tuning fork type level sensor and the like. A level sensor can be used.

[Brief description of the drawings]

FIG. 1 is a view showing a first embodiment of the present invention, and is a block diagram of a waste disposal apparatus.

FIG. 2 is a partially cutaway front view of a solid matter recovery passage relating to the solid matter separation device.

3 (A), 3 (B), and 3 (C) are views showing a process of discharging solid matter through a recovery passage, respectively.

FIGS. 4D and 4E are diagrams showing a process of discharging solids through a recovery passage, respectively.

FIG. 5 is a cross-sectional view of the separating means according to the embodiment.

[Explanation of symbols]

T1: supply port, T2: solid substance discharge port, 2: separation means, 7
... solid matter recovery passage, 9 ... first protection valve, 10 ... first airtight valve, 12 ... second protection valve, 13 ... second airtight valve, 15 ... first
Storage section, 16: second storage section, 18: gas supply port, 20 ...
Decompression device.

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Shin Kurano 33-1, Kanzakicho, Amagasaki City, Hyogo Kansai Paint Co., Ltd. (72) Inventor Masahiro Yoshii 33-1, Kanzakicho, Amagasaki City, Hyogo Kansai Pain (72) Inventor Hajime Akata 1-112-19 Kitahorie, Nishi-ku, Osaka City, Osaka Prefecture Inside Kurimoto Ironworks Co., Ltd. (72) Inventor Takao Yagi 3-4-2, Honmachi, Chuo-ku, Osaka City, Osaka Prefecture Iwatani Corporation F-term (reference) 4D059 AA03 AA30 BD14 BD19 BD21 BF02 BJ02 BJ17 EA20

Claims (5)

[Claims] 1. A supply port for supplying a liquid or a slurry containing a solid substance.
(T1), the liquid is heated and stirred under reduced pressure to evaporate the liquid to separate the solid from the solid, and at least the solid is recovered from the solid outlet (T2) in a solid separation apparatus. A solid substance recovery passage (7) is connected to the solid substance discharge port (T2), and the first airtight valve (10) and the first airtight valve (10) are sequentially connected to the solid substance recovery path (7) from the solid substance discharge port (T2) side. A storage section (15) and a second airtight valve (13) are provided. The first storage section (15) is provided with a gas supply port (18) and is connected to a decompression device (20). A solid separation apparatus characterized by being configured to be able to select an atmospheric state. 2. The solid matter separation device according to claim 1, wherein the first airtight valve is provided downstream of the solid matter discharge port (T2).
(10) A second storage section (16) is provided upstream of the solid substance discharged from the solid substance discharge port (T2) at least during a period of discharging the solid substance accumulated in the first storage section (15). Solid matter separation device configured to accumulate the odor in the second accumulation unit (16). 3. A first protection valve (9) for preventing the solid-state material from deteriorating the airtightness of the airtight valve according to any one of claims 1 and 2, Is connected upstream of the first airtight valve (10), and a second protection valve (12) for preventing the airtightness of the airtight valve from being reduced by solid matter is provided upstream of the second airtight valve (13). Solid separation device connected to the side position. 4. The solid material separating apparatus according to claim 3, wherein a set of a first protection valve (9) and a first airtight valve (10), a second protection valve (12) and a second airtight valve (13). In the set, when the solid matter accumulated on the protection valve is moved downstream by opening the valve, the valve is opened in the order of the airtight valve and the protection valve, and the solid matter flows through the solid matter collecting passage (7). A solid matter separation device that performs a valve closing operation in the order of a protection valve and an airtight valve when closing a valve while moving. 5. The solid separation apparatus according to claim 2, wherein the first storage section (1)
A solid material separation device wherein the volume of 5) is larger than the volume of the second storage section (16).