JP2005152687A - Dust removing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a dust removing apparatus which is capable of maintaining a high dust removing ability without clogging even when the operation of the apparatus is continued and, moreover, permits the maintenance of the apparatus while operating the same. <P>SOLUTION: The dust removing apparatus 1 comprises a primary container 10 storing water therein and a gas introduction pipe 50 for introducing air including dust into water in the primary container 10. Clean water is always supplied from a clean water supply port 7 to the primary container 10 and, when the primary container 10 is filled with water, the water is allowed to overflow into a secondary container 20. The water including dust stored in a secondary container 20 can be discharged by turning a discharge port 21 of the secondary container into an open state with a discharge valve 40 for the secondary container. Further, the opening and closing of the discharge valve 40 for the secondary container can be controlled by operation/shutdown of a suction device 100. A filter 80 is arranged on the lower side of the discharge port 21 of the secondary container so as to remove the dust contained in discharged water. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to a dust removing device that removes dust contained in a gas.

Conventionally, as an apparatus for removing dust in gas, there is one disclosed in Patent Document 1 below. Patent Document 1 discloses an apparatus that introduces a gas containing dust into water contained in a container and removes the dust in the gas using a filter disposed in water and water. More specifically, gas is introduced into the liquid from the lower side of the container, and the gas is bubbled by a bubble maker disposed in the container, whereby the dust in the bubbled gas is filtered or water. It is made to filter by.
JP-A-8-290030

  However, in the dust removing device having the above-described configuration, the filter is clogged during use or the water is contaminated, and the dust in the gas cannot be sufficiently removed. Therefore, when the filter and water are contaminated to some extent, it is necessary to replace and clean them, but when replacing these, the introduction of gas into the dust removing device must be stopped.

  However, when such a dust removal device is incorporated in a production line and used, the entire production line may have to be stopped in order to stop the use of the dust removal device, leading to deterioration in production efficiency. For example, in a facility in which a pulverizer is incorporated in the production line and the pulverized material pulverized by the pulverizer is sequentially transported, fine dust is generated on the facility by the pulverizer. May be used. When the dust removing device as disclosed in Patent Document 1 is adopted for such equipment, if the production line itself is not stopped when the use of the dust removing device is stopped, for example, around the equipment in the factory or the like. Dust will be scattered. When dust is scattered around the equipment, it is not only dirty, but it is very dangerous because the operator sucks the dust and makes the floor slippery. Therefore, in such facilities, there is a need for a dust removal device that can maintain a high dust removal capability at all times without performing maintenance such as filter and water replacement / cleaning even when the facility is continuously operating. It is done.

  This invention is made | formed in view of such a situation, and makes it a subject to provide the dust removal apparatus which can maintain a high dust removal capability even if it continues operating an apparatus. Furthermore, it is an object to provide a dust removing device that can be maintained while operating the device.

  In order to solve the above-mentioned problems, the dust removing device of the present invention contains a liquid in a dust removing device that introduces a gas containing dust into the liquid and dissolves the dust in the gas into the liquid to remove the dust. A liquid storage container, a gas introduction part for introducing a gas containing dust into the liquid in the liquid storage container, and a liquid discharge mechanism for discharging the liquid when the liquid amount in the liquid storage container exceeds a predetermined amount And a liquid supply mechanism for supplying a liquid containing no dust into the liquid storage container so as to secure a predetermined amount of liquid in the liquid storage container. Water can be used as the liquid, and the gas containing the dust can be air, but it is also possible to employ other things. “Securing a predetermined amount of liquid in the liquid container” means that when a gas containing dust is introduced into the liquid in the liquid container, the dust in the gas is sufficiently dissolved in the liquid. Securing a sufficient amount of liquid, and continuing to supply liquid into the liquid container.

  Here, the gas introduction unit may be a unit that pumps a gas having dust (hereinafter referred to as a pumping type), or by sucking an atmosphere of a space in which the liquid storage container is disposed, It may be one that sucks a gas containing dust from a gas inlet arranged in (1).

  Furthermore, in the dust removing device of the present invention, the liquid discharge mechanism is adjacent to the liquid storage container so as to share a wall portion, and stores a liquid overflowing from the liquid storage container beyond the wall portion. And a secondary container discharge port formed in the secondary container for communicating between the secondary container and the outside air, and a secondary container discharge valve for opening and closing the secondary container discharge port. can do. According to such a configuration, it is possible to realize a discharge mechanism that discharges the liquid when the liquid in the liquid container exceeds a predetermined amount.

  Furthermore, in the dust removal apparatus of this invention, it can have a filter which removes the dust in the liquid discharged | emitted from the said liquid container by the said liquid discharge mechanism.

  Furthermore, in the dust removing device of the invention, when a device having a filter is adopted, the liquid supply mechanism has a liquid circulation mechanism for supplying the liquid from which the dust has been removed by the filter to the liquid container. it can.

  Furthermore, in the dust removing apparatus of the present invention, the liquid container is disposed in such a manner that the upper part of the liquid container is opened, and a suction port communicates with the sealed container to suck the atmosphere in the sealed container. The gas introduction part has a gas discharge port in the liquid of the liquid container, and dust is generated in the liquid when the inside of the sealed container becomes negative pressure by the suction device. It can be provided with a gas introduction tube that discharges the contained gas. In this configuration, a gas containing dust is introduced into the liquid container by a suction method.

  Here, in the dust removing device of the present invention, only when the device having the suction device as described above is adopted, the liquid discharge mechanism is adjacent to the liquid storage container so as to share the wall portion, and the liquid storage A secondary container that contains liquid overflowing from the container beyond the wall and is disposed in the closed container so as to open an upper end thereof, and is formed in the secondary container, and the secondary container and the outside air And a secondary container discharge valve for opening and closing the secondary container discharge port, wherein the secondary container discharge valve is configured such that the atmosphere in the sealed container is the suction device. The secondary container discharge port is closed by the differential pressure between the secondary container and the outside air when the negative pressure is caused by the above, and when the suction by the suction device is stopped, The secondary container outlet is opened by the pressure of the liquid contained in It can be made to the state.

  Furthermore, in the dust removing device of the present invention, when the one having the suction device as described above is adopted, the dust removing device has a filter for removing dust in the liquid discharged from the liquid storage container by the liquid discharging mechanism; can do.

  Furthermore, in the dust removing device of the present invention, when the one having the suction device and the filter is adopted, the liquid supply mechanism includes a liquid circulation mechanism that supplies the liquid from which dust is removed by the filter to the liquid storage container. It can have.

  Furthermore, in the dust removing device of the present invention, when the suction device, the filter, and the liquid circulation mechanism are employed, the liquid circulation mechanism is a tertiary container that contains the liquid from which the dust has been removed by the filter. And a liquid supply pipe that communicates the liquid supply port formed in the sealed container and the tertiary container, and when the atmosphere in the sealed container becomes negative pressure by the suction device, the 3 The liquid in the tertiary container may be supplied to the liquid storage container via the liquid supply pipe by the differential pressure between the secondary container and the sealed container.

  Furthermore, in the dust removing apparatus of the present invention, when the one having the tertiary container and the liquid supply pipe is adopted, the tertiary container and the liquid supply pipe are connected via a supply valve; can do.

  Furthermore, in the dust removing device of the present invention, when the apparatus having the supply valve is adopted, the supply valve is opened when the liquid is stored in the tertiary container, and the liquid is stored in the tertiary container. It can be said that it is in a closed state when is not accommodated.

  In the configuration of the present invention as described above, dust can be removed from the gas by introducing a gas containing dust into the liquid in the liquid storage container and dissolving the dust in the gas into the liquid. further. While supplying liquid that does not contain dust into the liquid storage container, the liquid in the liquid storage container is discharged, so that the amount of liquid in the liquid storage container is always maintained at a predetermined level. However, the dust contained in the liquid in the liquid container can be gradually discharged. Therefore, even if gas containing dust is continuously introduced into the liquid in the liquid storage container, the liquid in the liquid storage container is not excessively contaminated, and a high dust removal capability can always be maintained.

  Further, when the liquid discharge mechanism having the secondary container, the secondary container discharge port, and the discharge valve for the secondary container as described above is adopted, when the liquid in the liquid storage container becomes full (that is, When the liquid in the liquid storage container exceeds a predetermined amount), the liquid containing dust overflowing from the liquid storage container can be stored in the secondary container. And if the discharge of the liquid in a secondary container is controlled by the discharge valve for secondary containers formed in the secondary container, the liquid containing a dust can be discharged at a desired timing out of the apparatus.

  In addition to the above-described configuration, by including a filter that collects dust contained in the liquid discharged from the liquid discharge mechanism, it is possible to discharge liquid that does not contain dust to the outside of the apparatus. Furthermore, since dust can be collected at a position different from the liquid container that removes dust from the gas, it is possible to discard dust while introducing gas containing dust into the liquid container. . For example, if the filter is disposed outside the apparatus main body (including the liquid storage container) and dust accumulated on the filter is discarded, a gas containing dust is introduced into the liquid storage container. Dust can be discarded without removing the filter from the device.

  In addition, when the apparatus is provided with the filter as described above, the liquid can be reused by providing a liquid circulation mechanism that supplies the liquid from which the dust has been removed by the filter into the liquid container, and the liquid is discharged. The amount can be reduced as a whole.

  Further, when a liquid discharge mechanism having a secondary container, a secondary container discharge port, and a discharge valve for a secondary container is employed, the use of the above filter has the following specific effects. . That is, the liquid overflowing from the liquid storage container is temporarily stored in the secondary container, and a discharge valve for the secondary container is disposed at the secondary container discharge port of the secondary container, and the liquid is discharged from the secondary container. You can adjust the timing. Therefore, the discharge of the liquid can be stopped by closing the discharge valve for the secondary container, and in this state, the filter can be removed from the apparatus and maintenance such as dust removal can be performed. In order to remove dust from the filter, dust accumulated on the filter may be collected and removed by a scoop or the like when the discharge valve for the secondary container is closed. Even if the discharge valve for the secondary container is closed, as long as the allowable storage capacity of the secondary container is not exceeded, liquid that does not contain dust will continue to be supplied to the liquid storage container, and dust will be discharged from the liquid storage container. Since the contained liquid overflows, the liquid storage container can always maintain a high dust removal capability. Thus, in the dust removing device of this configuration, it is not necessary to stop the operation of the device itself (introduction of gas containing dust into the liquid storage container) for maintenance of the device (filter). As a result, when it is used by being incorporated in equipment such as a production line, it is not necessary to stop the entire line for maintenance of the dust removing device, and deterioration of production efficiency can be prevented.

  Further, as the method for introducing the gas containing dust into the liquid storage container, it is preferable to employ the above suction method. When the suction method is adopted as a method for introducing dust into the liquid storage container, the inside of the sealed container in which the liquid storage container is placed is set to a negative pressure, and the gas containing dust is introduced into the liquid storage container using this negative pressure. In addition, it is possible to control the opening / closing of the discharge valve for the secondary container that discharges the liquid from the apparatus, or to supply the liquid containing no dust into the liquid storage container.

  Specifically, when a liquid discharge mechanism having the secondary container, the secondary container discharge port, and the discharge valve for the secondary container is employed, a discharge mechanism for the secondary container having a special mechanism is used. Even if it is not used, the opening / closing of the discharge valve for the secondary container can be controlled by operating / stopping the suction device. That is, when the suction device is operated and the inside of the sealed container becomes negative pressure, the secondary container discharge valve can be closed by the differential pressure between the secondary container and the outside air. At this time, the liquid containing the dust overflowing from the liquid storage container is stored in the secondary container. On the other hand, when the suction device is stopped, the negative pressure in the sealed container is eliminated, and the discharge valve for the secondary container can be opened by the pressure of the liquid containing dust contained in the secondary container. Thereby, the opening and closing of the discharge valve for the secondary container that discharges the liquid from the apparatus can be controlled.

  Further, as described above, a secondary container, a secondary container discharge valve, and a secondary container discharge port are provided as a discharge mechanism, and a suction method is employed as a method for introducing a gas containing dust into the liquid storage container. By providing a filter that removes the dust contained in the liquid after the liquid discharge mechanism, when the suction device is operated and the discharge of the liquid from the secondary container is stopped, the dust adhering to the filter Maintenance such as removal can be performed.

  In addition, the effect of adopting the suction method as a method for introducing the gas containing dust into the liquid container is particularly great when adopting a device having the liquid circulation mechanism as the liquid supply mechanism. In other words, the liquid from which dust has been removed by the filter can be supplied into the sealed container (liquid storage container) by making the inside of the sealed container negative with the suction device and using the differential pressure between the outside air and the sealed container. It becomes possible. Accordingly, it is not necessary to use a liquid circulation mechanism having a particularly complicated mechanism or a device that operates separately from the present apparatus, such as a pump, and the apparatus can be simplified. Furthermore, even if the operation and stop of the liquid circulation mechanism are not separately controlled, the liquid from which dust has been removed is automatically introduced into the liquid container by the operation and stop of the suction device, which is more practical. is there.

  The liquid circulation mechanism that automatically supplies the liquid from which the dust has been removed into the liquid container as described above is specifically realized by adopting the one having the tertiary container and the liquid supply pipe. be able to. In this configuration, the liquid from which the dust is removed is accommodated in the tertiary container, and the liquid supply port formed in the tertiary container and the sealed container is connected by the liquid supply pipe. Therefore, if the inside of the tertiary container is open to the outside air, or if the atmosphere in the tertiary container is higher than the pressure at least when the inside of the sealed container becomes negative pressure, the inside of the sealed container becomes negative pressure. Sometimes, the liquid from which the dust in the tertiary container has been removed is supplied into the sealed container due to the differential pressure between the tertiary container and the sealed container. At this time, the liquid supply port formed in the sealed container is formed above the liquid storage container, so that the liquid from which the dust supplied to the sealed container is removed is stored in the liquid storage container by its own weight. It becomes possible. Even if the liquid supply port is formed directly in the liquid storage container, it is possible to supply the liquid from which dust has been removed into the liquid storage container when the inside of the sealed container becomes negative pressure. is there.

  As described above, when a liquid circulation mechanism having the tertiary container and the liquid supply pipe is employed, the tertiary container and the liquid supply pipe are preferably connected via a supply valve. By controlling the opening and closing of the supply valve, the atmosphere of the tertiary container is sucked into the sealed container when the liquid from which the dust has been removed is not stored in the tertiary container, and the negative pressure in the sealed container is reduced. It can be prevented from being suppressed.

  The opening / closing of the supply valve can be automatically controlled. In other words, a liquid supply pipe is connected to the lower end of the tertiary container, and the supply valve is provided at the connection portion of the tertiary container with the liquid supply pipe, and buoyancy is generated in the liquid to be used. Install the float. When the float is lowered in the tertiary container, the supply valve is closed, and when the float is raised in the tertiary container, the supply valve is opened. Thus, when the liquid is not in the tertiary container, the float is lowered so that the supply valve is closed, and when the liquid is in the tertiary container, the float is raised and the supply valve is opened. Thereby, the opening and closing of the supply valve can be automatically controlled.

  Hereinafter, the dust removing device of the present invention will be described with reference to the accompanying drawings. FIG. 1 shows an outline of a dust removing device 1 showing an embodiment of the present invention. A dust removing device 1 shown in FIG. 1 includes a primary container (liquid container) 10 for containing water, a secondary container 20 adjacent to the primary container 10 in a form sharing a wall portion 5, and 1 The closed container 9 in which the secondary container 10 and the secondary container 20 are arranged so that the upper ends of the respective containers are opened, and the purified water supply port (liquid supply mechanism) for supplying purified water (industrial water) to the primary container 10 7, a secondary container discharge valve 40 that opens and closes a secondary container discharge port 21 that is provided in the lower part of the secondary container 20 and communicates the secondary container 20 with the outside air, and the water contained in the primary container 10. A gas introduction pipe (gas introduction part) 50 for introducing air containing dust into the air and a suction device 100 for sucking the atmosphere in the sealed container 9. The secondary container 20, the secondary container discharge port 21, and the secondary container discharge valve 40 constitute a liquid discharge mechanism.

  Further, the dust removing device 1 accommodates a filter 80 for removing dust in the waste water discharged from the discharge valve 40 for the secondary container, and water (purified water) from which dust has been removed by the filter 80. The container 30 and a circulating water supply pipe (liquid supply pipe) 60 for supplying purified water in the tertiary container into the primary container 10 are provided. The tertiary container 30 and the circulating water supply pipe 60 constitute a liquid circulation mechanism for circulating the water from which dust has been removed. This liquid circulation mechanism constitutes a part of the liquid supply mechanism.

  Hereinafter, the configuration of each part will be described in detail. A purified water supply port 7 for supplying industrial water, which is purified water, to the primary container 10 is formed above the primary container 10. The industrial water from the purified water supply port 7 is used to supply the purified water to the primary container 10. The house contains clean water. Further, during operation of the apparatus, purified water is always supplied from the purified water supply port 7 into the primary container 10.

  A gas discharge port 51 of the gas introduction pipe 50 is disposed at the bottom of the primary container 10. Air discharged from the gas discharge port 51 is placed in the primary container 10 above the gas discharge port 51. A diverter plate 90 is provided for even dispersion. FIG. 2 explains the outline of the flow dividing plate 90 when the direction of air introduced from the gas introduction pipe 50 is a direction from the upper side to the lower side of the drawing. As shown in FIG. 2, first, the flow dividing plate 90 is divided into four regions. More specifically, it is divided by two wall surfaces 92 and 94 orthogonal to each other at the center O of the flow dividing plate 90. Further, a plate-like member 93 having a desired area is attached to the shunt plate 90 around its center O, and the four corners of the plate-like member 93 are arranged in four regions 91 divided by wall surfaces 92 and 94, respectively. It has come to be. Further, the region 91 other than the plate-like member 93 of the flow dividing plate 90 has a mesh shape. The pore diameter of the mesh needs to be set larger than the dust contained in the air that is sent. In addition, in the primary container 10, the gas discharge port 51 of the gas introduction pipe | tube 50 which introduces air into this primary container 10 can be arrange | positioned just under the center O of the flow dividing plate 90 (in FIG. 2, just above). .

  From such a gas discharge port 51 (see FIG. 1) of the gas introduction pipe 50 arranged immediately below the center of the flow dividing plate 90 (just above the center in FIG. 2), air containing dust is transferred to the primary container 10. When introduced into the inside, air is dispersed in the four divided areas by the wall surfaces 92 and 94 of the flow dividing plate 90 and the plate-like member 93. Thereby, since the air introduce | transduced in water is disperse | distributed uniformly in water, the probability that air and water will contact increases and it can implement | achieve a higher dust removal capability.

  The air containing dust dispersed in the primary container 10 by the flow dividing plate 90 is bubbled by the punch holes 11 a formed in the punch metal 11 disposed above the flow dividing plate 90. A plurality of punch metals 11 are formed in stages in the primary container 10 from the lower side to the upper side. The punch metal 11 is designed such that the hole diameter of the punch holes 11a becomes smaller toward the upper side of the primary container 10. In FIG. 1, the punch holes of the punch metal 11 disposed above the primary container 10 are omitted. As a result, the air that has passed through the punch metal 11 gradually becomes fine bubbles, and the surface area where the air and water come into contact with each other increases, so that the dust easily dissolves in the water. More specifically, the air dispersed in the primary container 10 from the flow dividing plate 90 sequentially passes through the punch metal 11 having a diameter hole of φ8 mm and φ6 mm, and finally passes through the metal mesh 12 (mesh 12) of 5 mesh. By doing so, it becomes small bubbles in order.

  However, in the process of reducing the size of the bubbles, it is preferable to reduce the size of the bubbles because the dust is more easily dissolved in the water. There is a possibility that the dust may be clogged, or the pore diameter needs to be adjusted appropriately.

  Further, the mesh 12 and the punch metal 11 described above are for reducing air bubbles containing dust introduced into the water in the liquid container 10 to the last, and dust contained in the air diffused in the water. Is not meant to capture. Therefore, it is necessary to make the hole diameter formed at least larger than the dust so that the dust is not captured by these. Thereby, the mesh 12 and the punch metal 11 do not capture dust, and it is not necessary to remove the mesh 12 and the punch metal 11 from the apparatus for maintenance in order to remove the dust.

  The force for introducing the gas containing dust into the water accommodated in the primary container 10 is generated by sucking the atmosphere in the sealed container 9 by the suction device 100. Specifically, a suction port 2 that communicates between the sealed container 9 and the suction device 100 is provided in an upper portion of the sealed container 9, and the suction port 2 and the suction device 100 are connected by a pipe 4. . The atmosphere in the sealed container 9 is sucked by the suction device 100, and the inside of the sealed container 9 becomes negative pressure. When the inside of the sealed container 9 becomes negative pressure by the suction device 100, air containing dust is introduced into the primary container 10 from the gas discharge port 51. Thus, the dust removal apparatus of this embodiment introduces air containing dust into water by a suction method. A suction motor can be used as the suction device 100.

  Note that the suction device 100 intermittently sucks the atmosphere in the sealed container 9. When the suction device 100 is operated, the inside of the sealed container 9 is set to a negative pressure, and when the suction device 100 is stopped, the inside of the sealed container 9 is Open to atmospheric pressure.

  When air is introduced into the primary container 10 by suction of the suction device 100, water droplets are scattered from the primary container 10 to the outside of the primary container 10. Therefore, water droplets may be scattered around the suction port 2 between the sealed container 9 and the suction device 100. If water droplets are scattered at the suction port 2, in the worst case, the water droplets may reach the suction device 100. If a water droplet enters the suction device 100, the device may break down. Therefore, the water droplet prevention cover 3 is arranged around the suction port 2.

  In the sealed container 9, the primary container 10 and the secondary container 20 are separated from each other by the wall 5, and in order for water containing dust to move from the primary container 10 to the secondary container 20, The primary container 10 overflows with water over 5. In FIG. 1 showing the present embodiment, the secondary container 20 is disposed on the side of the primary container 10, but is around the primary container 10, and the primary container 10 and the wall 5 are connected to each other. As long as it is shared, it may be formed at any position. Furthermore, in the dust removing apparatus 1 of the present embodiment shown in FIG. 1, one secondary container 20 is shown as the secondary container 20, but there may be a plurality of secondary containers 20. In that case, it is desirable to employ a container that shares the wall 5 with the primary container 10 in all the secondary containers 20.

  A secondary container discharge port 21 is formed at the lower end of the secondary container 20, and a secondary container discharge valve 40 for discharging water containing dust from the secondary container 20 to the secondary container discharge port 21. Is provided. Here, the details of the secondary container discharge valve 40 attached to the secondary container discharge port 21 will be described with reference to FIG. As shown in FIG. 3, the secondary container discharge valve 40 includes a valve main body 42 arranged in a form covering the secondary container discharge port 21, and a mounting portion 41 for attaching the valve main body 42 to the secondary container discharge port 21. It has. Here, the attachment portion 41 can rotate the discharge valve body 42 around the attachment portion 41 between a position where the valve body 42 opens the secondary container discharge port 21 and a position where the secondary container discharge port 21 is closed ( On the page of FIG. 3). Furthermore, the attachment portion 41 can easily switch between the open state and the closed state of the valve body 42 due to the pressure difference between the inside of the secondary container 20 and the outside air. Specifically, when the pressure in the secondary container 20 is lower than the outside air, the valve main body 42 is pressed against the secondary container discharge port 21 by the pressure of the outside air to be in a closed state (see FIG. 3A). When the pressure in the secondary container 20 is about the same as or greater than the outside air, the water is accumulated in the secondary container 20 side (see FIG. 3B). .

  As shown in FIG. 1, below the secondary container discharge valve 40, a filter 80, a tertiary container 30 as a liquid circulation mechanism, and water in the tertiary container 30 are put into the primary container 10. A circulating water supply pipe 60 for supply is arranged. More specifically, the tertiary container 30 is disposed such that water containing dust discharged from the secondary container discharge port 21 falls into the tertiary container 30 by its own weight. A filter 80 is disposed at the top. As a result, when the water discharged from the secondary container discharge valve 40 falls and is accommodated in the tertiary container 30, the dust in the water is removed by the filter 80. Therefore, clean water from which dust has been removed by the filter 80 is accommodated in the tertiary container 30. A non-woven fabric can be used as the filter 80.

  Further, the tertiary container 30 and the sealed container 9 are connected by a circulating water supply pipe 60 that is a part of the liquid circulation mechanism. More specifically, a tertiary container discharge port 32 for connecting the tertiary container 30 and the closed container 9 is formed at the lower end of the tertiary container 30, while the primary of the closed container 9 is formed. A circulating water supply port 61 is formed above the container 10, and the tertiary container discharge port 32 and the circulating water supply port 61 are connected by a circulating water supply pipe 60.

  Furthermore, a tertiary container float valve (supply valve) 70 (hereinafter referred to as a float valve 70) is attached to the tertiary container discharge port 32 formed at the lower end of the tertiary container 30. FIG. 4 is a diagram showing an outline of the valve 70 with a float. As shown in FIG. 4, a valve 70 with a float is attached to the tertiary container outlet 32 of the tertiary container 30 by an attachment portion 73. The attachment portion 73 can be moved so that the float valve 70 can be rotated around the attachment portion 73 (on the paper surface of FIG. 4). Further, a float 71 is connected by a connecting rod 72 above the valve 70 with a float. And this float 71 is attached to the valve 70 with a float so that it may be arrange | positioned in the tertiary container 30. FIG. In the present embodiment, as the float 71, one that produces buoyancy in water is employed. In the valve 70 with such a configuration, the float 71 moves up and down depending on the amount of purified water in the tertiary container 30, so that the valve 70 with float is opened and closed accordingly.

  Further, the tertiary container 30 is formed with a drain port 31 for draining water overflowed in the tertiary container 30. The drainage discharged from the drainage port 31 is not supplied into the primary container 10 by the liquid circulation mechanism but is finally discarded. With such a configuration, as long as steady operation is continued, purified water (industrial water) supplied into the primary container 10 through the purified water supply port 7 and the tertiary container 30 are completely discarded. The amount of wastewater is balanced.

  Hereinafter, the operation of the dust removing apparatus 1 according to the embodiment will be described with reference to FIG. First, purified water is accommodated in the primary container 10 from the purified water supply port 7. When the suction device 100 is operated in a state where the sealed container 9 is sealed, the inside of the sealed container 9 becomes a negative pressure as described above. Thereby, air containing dust is introduced into the water from the gas discharge port 51 of the gas introduction pipe 50 disposed in the water in the primary container 10. This is because the pressure of the air containing dust is higher than the pressure of water at the gas discharge port 51 by setting the inside of the sealed container 9 to a negative pressure.

  Air bubbles containing dust introduced into the water gradually become smaller, and the dust contained in the bubbles melts into the water accordingly. Thereby, dust in the air can be removed. The air from which dust has been removed by water reaches the water surface of the primary container 10 and is released into the sealed container 9 as it is. Here, since the atmosphere in the airtight container 9 is sucked by the suction device 100, the air from which the dust has been removed is sucked by the suction device 100 and discharged to the outside of the device, for example. Even if the air is discharged outside the device, the dust is removed by the water contained in the primary container 10, so the periphery of the device (in the factory when installed in the factory equipment) is contaminated with dust. There is no.

  On the other hand, as described above, clean water (industrial water) is always supplied into the primary container 10, and when the suction device 100 is operated, the water volume is apparently increased due to bubbles in the primary container 10, Water overflows the wall 5 between the primary container 10 and the secondary container 20 and water (water containing dust) is accommodated in the secondary container 20. Here, the atmosphere in the sealed container 9 is set to a negative pressure by the suction device 100, and the secondary container discharge valve 40 formed in the secondary container 20 is closed. This is because the pressure in the secondary container 20 is considerably lower than the outside air, and even if the water pressure is subtracted, a higher pressure is applied to the secondary container discharge valve 40 from the outside air side. As long as the suction device 100 sucks the atmosphere in the sealed container 9 in this manner, the secondary container discharge valve 40 is closed, and the water containing dust overflowing in the secondary container 20 is stored as it is. In order to further improve the sealing performance of the secondary container discharge valve 40, a sealing material 43 such as a rubber plate is attached to a portion in contact with the secondary container discharge port 21 inside the secondary container discharge valve 40. Is desirable.

  In the dust removing device 1 of the present embodiment, the suction device 100 is intermittently operated. Therefore, the inside of the sealed container 9 in which the primary container 10 and the secondary container 20 are arranged is opened to atmospheric pressure when the suction device 100 is stopped. At this time, the force that has caused the secondary container discharge valve 40 to be closed disappears, and the secondary container discharge valve 40 is opened by the water pressure of the water contained in the secondary container 20. And the water containing the dust accommodated in the secondary container 20 will be discharged | emitted from the secondary container discharge port 21 outside the apparatus. As long as the suction device 100 is intermittently operated in this manner, the water contained in the primary container 10 is gradually replaced, and water that is clean enough to always remove dust in the air with a high capacity is always obtained. 10 can be accommodated. Therefore, even if the apparatus continues to operate, a high dust removal capability can be maintained. Furthermore, as long as clean water (industrial water) that does not contain dust is supplied into the primary container 10, maintenance of the apparatus is basically unnecessary.

  Furthermore, in the dust removing device 1 of the present embodiment, the waste water discharged from the secondary container discharge port 21 is cleaned by the filter 80 and is supplied to the primary container 10 again by the liquid circulation mechanism. As described above, the wastewater containing the dust discharged from the secondary container outlet 21 is purified by removing the dust by the filter 80. Only the purified water from which the dust has been removed is accommodated in the tertiary container 30 disposed at the lower part of the filter 80. The dust accumulated on the filter 80 is not involved in the dust removal capability of the dust removal device 1 of the present embodiment at all, and therefore the dust removal capability of the dust removal device 1 does not decrease even if it is not removed. When water is used, water containing dust may be circulated in the primary container 10 and thus should be periodically removed. However, unlike the conventional dust removing device, it is not necessary to stop the entire device to remove the dust on the filter 80, and the suction device 100 is sucking the atmosphere in the sealed container 9 (secondary container). The dust on the filter 80 may be removed while the discharge valve 40 is closed. Further, even when the atmosphere in the sealed container 9 is open to atmospheric pressure (when the secondary container discharge valve 40 is open), the dust on the filter 80 may be removed in that state. Is possible. Therefore, even if the dust removing apparatus 1 of this embodiment is incorporated in a production line and used, the production line does not stop in a short period of time, and production efficiency is not reduced.

  Hereinafter, the operation of the liquid circulation mechanism will be described. A tertiary container discharge port 32 to which a valve 70 with a float is attached is formed at the bottom of the tertiary container 30. Normally, when the tertiary container 30 is filled with purified water, the float 71 is connected to the tertiary container 30. It moves upwards and the valve 70 with a float will be in an open state (refer FIG.4 (b)). If the suction device 100 is operating in this state, the inside of the sealed container 9 becomes negative pressure, so the purified water in the tertiary container 30 passes through the liquid supply pipe 60 to the inside of the sealed container 9 and eventually the primary container 10. Will be supplied inside. On the other hand, if purified water is not stored in the tertiary container 30, the float 71 moves below the tertiary container 30, and the valve 70 with a float will be in a closed state (refer Fig.4 (a)). Therefore, purified water is not supplied into the primary container 10 via the liquid circulation mechanism. Here, the float-equipped valve 70 is attached to the tertiary container outlet 32 of the tertiary container 30 for the following reason. In other words, if there is no valve 70 with a float, when the purified water is not accommodated in the tertiary container 30 and the suction device 100 is operating, air is supplied from the liquid circulation mechanism into the sealed container 9. The negative pressure in the airtight container 9 is reduced. As a result, the suction of air from the gas introduction pipe 50 becomes worse, or the closed state of the secondary container discharge valve 40 cannot be maintained. Therefore, in the dust removing apparatus 1 of this embodiment that introduces a gas containing dust into the primary container 10 by a suction method, it is desirable to employ the valve 70 with a float. In order to further improve the airtightness of the valve 70 with a float, it is desirable to attach a sealing material 74 such as a rubber plate to a portion in contact with the tertiary container outlet 32 inside the valve 70 with a float.

  In this way, the liquid circulation mechanism is automatically operated as long as the suction device 100 is operated by introducing air containing dust by the suction method into the primary container 10 and employing the float valve 70. Is possible. Thereby, purified water, such as industrial water, can be saved. Moreover, it is not necessary to newly operate equipment, such as a pump, in order to circulate purified water. In this embodiment, the float valve 70 is used as the supply valve. However, the present invention is not limited to this, and the water in the tertiary container 30 is detected by a sensor, and the valve is based on the detection result. Of course, it is also possible to employ an electromagnetic valve that opens and closes.

  In such a liquid circulation mechanism, it is desirable to form the circulating water supply port 61 formed in the sealed container 9 at a position higher than the water surface of the primary container 10. When the circulating water supply port 61 is formed at a position lower than the water surface of the primary container 10, the water stored in the primary container 10 flows back into the tertiary container 30 when the suction device 100 stops operating. Resulting in. However, such a problem can be solved by arranging a check valve in the liquid supply pipe 60.

  In the above-described embodiment, a form in which purified water is automatically circulated is adopted as the liquid circulation mechanism. However, as the liquid circulation mechanism, water from which dust has been removed by a filter is primary using a pump or the like. You may make it supply to the container 10. FIG.

  Furthermore, in the dust removing device 1 of the present embodiment, a liquid circulation mechanism is adopted, but the entire amount of water containing dust discharged from the secondary container discharge port 21 is discarded as it is, or the secondary container discharge port 21. After the dust is removed from the water containing the dust discharged from the filter 80 by the filter 80, the entire amount of purified water stored in the tertiary container 30 may be discarded. Even with such a configuration, there is no problem as a dust removing device for removing dust contained in the gas.

  Furthermore, in the dust removal apparatus 1 of this embodiment, the method (suction type) which introduce | transduces the air containing a dust into the water in the primary container 10 by attracting | sucking the atmosphere in the airtight container 9 with the suction apparatus 100 is employ | adopted. However, the present invention is not limited to this. That is, you may employ | adopt the method (pumping type) which introduce | transduces the air (gas) containing dust into the water in a primary container (liquid storage container) with a pumping apparatus. In this case, the present invention can be realized by connecting the exhaust port of the pressure feeding device and the intake port of the gas introduction pipe according to the present embodiment. By adopting such a pressure-feed type gas introduction method, it is not necessary to house the primary container (liquid container) in the sealed container, and the apparatus is simplified. On the other hand, in this method, the timing at which the liquid containing dust is discharged from the apparatus is controlled by operating / stopping the suction apparatus, or the purified water stored in the tertiary container is automatically pumped up to the primary container (liquid storage container). It is not possible. Therefore, it is desirable to adopt a method of introducing gas by a suction method and further to employ a liquid circulation mechanism according to the present invention in consideration of reduction of the amount of drainage and saving of water.

The conceptual diagram explaining an example of the dust removal apparatus of this invention. The perspective view for demonstrating a shunt plate in detail. Schematic which shows the discharge valve for secondary containers and demonstrates the operation | movement. Schematic which shows the valve with a float for 3rd containers, and demonstrates the operation | movement.

Explanation of symbols

1 Dust removal device 5 Bulkhead 7 Purified water supply port (liquid supply mechanism)
9 Sealed container 10 Primary container (liquid container)
20 Secondary container (liquid discharge mechanism)
21 Secondary container outlet (liquid discharge mechanism)
30 Tertiary container (liquid circulation mechanism)
40 Secondary container discharge valve (liquid discharge mechanism)
50 Gas introduction pipe (gas introduction part)
60 Circulating water supply pipe (liquid supply pipe, liquid circulation mechanism)
61 Circulating water supply port (liquid supply port, liquid circulation mechanism)
70 Valve with float for tertiary container 80 Filter 100 Suction device

Claims (11)

In a dust removal device that introduces a gas containing dust into the liquid and dissolves the dust in the gas into the liquid to remove the dust,
A liquid storage container for storing a liquid, a gas introduction part for introducing a gas containing dust into the liquid in the liquid storage container, and discharging the liquid when a liquid amount in the liquid storage container exceeds a predetermined amount A dust removing device comprising: a liquid discharge mechanism; and a liquid supply mechanism for supplying a liquid not containing dust into the liquid container so as to secure a predetermined amount of liquid in the liquid container. The liquid discharge mechanism is formed in the secondary container, which is adjacent to the liquid storage container so as to share a wall portion and stores the liquid overflowing from the liquid storage container beyond the wall portion, and the secondary container. The dust removal according to claim 1, further comprising: a secondary container discharge port that allows communication between the secondary container and outside air; and a secondary container discharge valve that opens and closes the secondary container discharge port. apparatus. The dust removing device according to claim 1, further comprising a filter that removes dust in the liquid discharged from the liquid storage container by the liquid discharging mechanism. The dust removing apparatus according to claim 3, wherein the liquid supply mechanism includes a liquid circulation mechanism that supplies the liquid from which dust is removed by the filter to the liquid container. A sealed container in which the liquid container is disposed in such a manner that an upper portion of the liquid container is opened; and a suction device that communicates with the sealed container and sucks the atmosphere in the sealed container;
The gas introduction part has a gas discharge port in the liquid of the liquid storage container, and discharges a gas containing dust in the liquid when the inside of the sealed container becomes negative pressure by the suction device. The dust removing device according to claim 1, comprising: The liquid discharge mechanism is adjacent to the liquid storage container so as to share a wall portion, and is arranged to store the liquid overflowing from the liquid storage container beyond the wall portion and to open the upper end in the sealed container. A secondary container that is formed in the secondary container and communicates between the secondary container and outside air, and a secondary container discharge valve that opens and closes the secondary container discharge port. The discharge valve for the secondary container has an outlet between the secondary container and the outside air when the atmosphere in the sealed container becomes negative pressure by the suction device. When the suction by the suction device is stopped by the differential pressure, the secondary container discharge port is opened by the pressure of the liquid stored in the secondary container. The dust removing device according to claim 5. The dust removing device according to claim 5, further comprising a filter that removes dust in the liquid discharged from the liquid storage container by the liquid discharging mechanism. 8. The dust removing device according to claim 7, wherein the liquid supply mechanism has a liquid circulation mechanism that supplies the liquid from which dust is removed by the filter to the liquid container. The liquid circulation mechanism has a tertiary container that contains the liquid from which dust has been removed by the filter, a liquid supply port that is formed in the sealed container, and a liquid supply pipe that communicates the tertiary container. When the atmosphere in the sealed container becomes negative pressure by the suction device, the liquid in the tertiary container is transferred to the liquid via the liquid supply pipe by the differential pressure between the tertiary container and the sealed container. The dust removing device according to claim 8, wherein the dust removing device is supplied to a storage container. The dust removing apparatus according to claim 9, wherein the tertiary container and the liquid supply pipe are connected via a supply valve. 2. The supply valve according to claim 1, wherein the supply valve is opened when liquid is stored in the tertiary container, and is closed when liquid is not stored in the tertiary container. The dust removing apparatus according to 10.

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