JP2006341227A - Oscillating type vacuum dehydrator - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an oscillating type vacuum dehydrator, which enables continuous dehydration of solid matter with relatively a small particle size, such as sand, particulates of limestone, crushed glass powders, iron oxide, and water-granulated slag and also enables strong dehydration of very fine solid matter, dehydration of which within a short time has been difficult. <P>SOLUTION: The oscillating type vacuum dehydrator is composed of a transport face 1a on which wet solid matter is placed and a dehydration net 1b with an opening width ranging from 0.05 to 0.3 mm, which is arranged on the lower part side of and over the entire length (in the width direction) of the transport face 1a. Furthermore, the oscillating type vacuum dehydrator is also composed of a transport chute 1 that is supported with a flexible support member 2 while being inclined in the longitudinal direction, a shaker 3 for continuously shaking the entire transport chute 1 up and down with an amplitude ranging from 0.5 to 4.0 mm, a hose 6 for introducing water and fine solid matter that have fallen into a pressure reduction box 4 provided at the lower part of the dehydration net 1b toward the upper part of a water storage tank 5, a vacuum pump 7 for suction of air within the water storage tank 5 for reducing pressure within the pressure reduction box 4, and an automatic valve 8 for intermittently blocking communication. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention can continuously dehydrate relatively small solid particles such as sand, limestone fine particles, crushed glass powder, iron oxide, and granulated slag, and can be dehydrated in a short time. The present invention relates to an oscillating vacuum dehydrating apparatus capable of powerfully dehydrating even a very fine solid that has been difficult.

  Since solids with relatively small particle sizes such as sand, limestone fine particles, crushed glass powder, iron oxide, and granulated slag are mixed with impurities or uneven in particle size, the commercial value is greatly impaired. Cleaning and sorting (classification) are performed. Since water is used at that time, these washed and sorted solids contain a lot of moisture, and cannot be transported as they are.

  Thus, for example, sand discharged from a classifier or the like is often piled up and dehydrated naturally, but there are problems such as it takes time for dehydration and it is necessary to secure land for pile-up. Moreover, if the sand is piled up in a damp state, not only is it difficult to treat the drained water exuded from the sand, but the lower side of the piled-up sand becomes damp and can only be sufficiently dehydrated. It is a problem.

  As a device that can reduce the treatment of the waste water that oozes out from the sand, there are a settling tank that receives the undiluted solution mixed with sand and sinks the sand, and several items that transport the settling sand to the bottom of the settling tank. A horizontal spiral classifier comprising a spiral blade and a scraping bucket disposed at the end of the spiral blade and scraping the transferred sand, and a hollow of the bucket disposed in the ring There is a classifier dehydrator composed of a vibrating sieve type dehydrator that accepts sand from a bucket arranged corresponding to the section, and a ring ridge that returns the water containing fine sand extracted by this dehydrator to the settling tank (For example, refer to Patent Document 1).

  This classifier dehydrator tries to dehydrate the wet sand introduced from the horizontal spiral classifier by moving it on the sieve while vibrating it with a vibrating sieve dehydrator. If the sand is small, it is not preferable because sand with a small particle size has a high water content and cannot be dehydrated well. There is a drawback that it is difficult to sequentially dewater the wet sand that is continuously fed from. In addition, since such a defect occurs when dewatering to a particle having a small particle size, the limestone fine particles are not limited to sand, just by moving on the screen while applying vibration as in this classifying dehydrator. Even solid materials with relatively small particle sizes such as crushed glass powder, iron oxide, and granulated slag cannot be sufficiently dehydrated.

No. 3-1069

  In view of the above problems, the present invention can continuously dehydrate solids having a relatively small particle size such as sand, fine particles of limestone, crushed glass powder, iron oxide, and granulated slag with simple equipment. It is an object of the present invention to provide a vibratory vacuum dehydrating apparatus capable of powerfully dehydrating even very fine solids that have been difficult to dehydrate in a short time.

As a result of intensive studies to solve the above-mentioned problems, the present inventor cannot sufficiently dehydrate sand having a small particle size when dewatering only by vibration as in the conventional vibration sieve dehydrator. The small-sized sand that has been sieved and dehydrated and sifted off is returned to the settling tank of the classifier, so a fine dewatering net is used instead of a coarse-screened sieve. In addition, if a vacuum box is installed under the dewatering screen of this vibrating screen dewatering machine and a means for sucking the inside of the vacuum box using a vacuum pump or the like is installed, the wet sand on the dewatering screen will be strengthened. Therefore, it was considered that sand having a small particle size can be sufficiently sucked and dehydrated, and further, it can be used for dehydrating solids having a small particle size other than sand.
However, when the suction means is attached to the vibration sieve dehydrator, if the conveying chute is vibrated with a large amplitude as in the conventional vibration sieve dehydrator, the solid matter on the dehydration net jumps too much during suction. If the suction of the transport chute is too small, not only will solid matter be sucked into the dewatering net by suction, it will not be able to be transported, but also solids will enter the dewatering net and clog the dewatering net. I was faced with a new problem that often made it impossible to dehydrate.

  As a result of further research, the present inventor has attached a dewatering net comprising a wedge wire screen having the narrowest opening width of 0.05 to 0.3 mm to the conveyance surface of the conveyance chute, and the conveyance chute is attached to a conventional vibrating sieve. If the suction dehydration is intermittently performed while continuously vibrating in the vertical direction with an amplitude of 0.5 to 4.0 mm, which is slightly smaller than the amplitude of the type dehydrator, the amplitude does not exceed 4.0 mm. Since the upper solid material does not jump up too much, sufficient suction dehydration can be performed, and since the amplitude of the continuously vibrating conveyance chute is not less than 0.5 mm, the suction dehydration was performed when the suction was stopped. Solids can be easily transported by vibration, and solids that have entered the mesh of the dewatering net can be easily ejected from the net of the dewatering net by the vibration of the transport chute. Paying attention to the fact that the transport speed is slow because the adhesion is high, while the solid speed after dehydration is high, if a dewatering net is provided on the lower side of the transport chute, it will be wet and highly adherent The solids move downward from the upper part of the transport chute at a slow speed, and the solids are almost stopped on the dehydration net during suction dehydration, but the adherability is low after suction dehydration, so suction is reduced. When it is stopped, it is discharged at a high speed, and the solid matter to be charged hardly accumulates in the conveyance chute so that continuous dewatering work is possible, and the solid matter on the conveyance chute is conveyed while vibrating up and down. Therefore, the present invention has been completed by investigating that it is possible to uniformly perform suction dehydration because it is uniformized before reaching the dewatering net located below the transport chute.

  In other words, the present invention is arranged over the entire length in the width direction on the conveyance surface into which the wet solid material is introduced from above and below the conveyance surface, and the narrowest opening width is 0.05 to 0.3 mm. A conveyance chute comprising a dewatering net made of a wedge wire screen and supported by a flexible support member in an inclined state in the longitudinal direction, and the entire conveyance chute has an amplitude of 0.5 to 4.0 mm. In the upper part of the water storage tank, a vibration box that continuously vibrates in the up and down direction, a decompression box installed below the dewatering net, and water and fine solids that have fallen into the decompression box. A hose for carrying out the operation, a vacuum pump for sucking air in the water storage tank in order to depressurize the inside of the pressure reducing box via the hose, and intermittent communication between the pressure reducing box and the water storage tank To do It is a vibration type vacuum dehydrator characterized by having an automatic valve installed in the base.

  If the water tank has a safety valve that takes air into the water tank from the outside when the internal pressure falls below a specified value, an unexpectedly large amount of wet solids may be sent to the dehydration net and sucked. When an unexpected clogging occurs, the dehydration mesh may be blocked, resulting in an excessively low pressure in the decompression box or water tank, causing various equipment to be damaged. It is preferable that the pressure can be increased by taking in air from the outside, and a plurality of dewatering nets are provided at intervals below the conveying chute in the solid material conveying direction on the lower side of the conveying surface. If the decompression box and hose are installed, and the automatic valves attached to each hose are automatic valves that open and close with a time difference, use a vacuum pump if there is only one dehydration net. Although the attractive force is not always used, if a plurality of dewatering nets are provided and the suction force of the vacuum pump is switched for each dewatering net, the suction force from the vacuum pump is not wasted and dewatering can be performed efficiently. Preferably, the conveyance chute is provided with a plurality of conveyance surfaces through partition walls in parallel with the solid material conveyance direction, and a depressurization box and a hose are attached to each dehydration net of each conveyance surface, and attached to each hose. Each automatic valve is an automatic valve that opens and closes with a time difference, or has a plurality of conveyance chutes, and a depressurization box and a hose are attached to each dewatering net of each conveyance chute and is attached to each hose If the automatic valves are opened and closed with a time difference, not only can a large amount of solids be dehydrated, but also the suction force that is constantly applied from the vacuum pump. Preferred also is to that investigation able to efficiently dewatered by using switched sequentially for each dewatering networks each conveying chute.

  The vibration type vacuum dehydrating apparatus according to the present invention is disposed over the entire length in the width direction on the conveyance surface into which the wet solid material is introduced from above and below the conveyance surface, and the narrowest opening width is 0.05. It is composed of a dewatering net consisting of a wedge wire screen of ~ 0.3 mm and is equipped with a conveying chute that is inclined in the longitudinal direction, so that it can suck and dewater even very fine solids. Since a dewatering net for suction dewatering is provided on the lower side of the transport chute, the wet and highly adhering solids move downward from the upper side of the transport chute at a slow speed, and the solids are removed during suction dehydration. The material is almost stopped on the dewatering net, but after adsorbing and dehydrating, the adhesion becomes low. Unevenness The exciter can be continuously dehydrated without damaging, and the conveyance chute is supported by a flexible support member and continuously vibrates in the vertical direction with an amplitude of 0.5 to 4.0 mm. Since the solid matter on the transport chute is made uniform by vibrating up and down and sent to the dehydration net, it can be dehydrated in a short time without clogging the dehydration net. Also, a decompression box installed below the dewatering net, a hose for introducing water and fine solids falling into the decompression box to the upper part of the water storage tank, and the decompression box via the hose A vacuum pump that sucks air in the water storage tank to reduce pressure, and an automatic valve installed in the hose to intermittently cut off the communication between the pressure reducing box and the water tank. Po It is possible to intermittently block the suction by flop is of the suction dewatered solids can be readily discharged.

  In addition, if the water tank is provided with a safety valve that takes air into the water tank from the outside when the internal pressure falls below the specified value, an unexpectedly large amount of moist solids may be sent to the dewatering net and sucked. Even if unexpected clogging occurs, air is taken into the storage tank from the outside, so that it does not become excessively low pressure during suction and the storage tank, decompression box, etc. are not damaged. A plurality of dewatering nets are provided with a chute spaced below the conveying surface in the solid material conveying direction, and a depressurization box and a hose are attached to each dewatering net, and each hose is attached. If the automatic valve is an automatic valve that opens and closes with a time lag, the suction force from the vacuum pump can be kept constant by switching the suction force of the vacuum pump for each dehydration network. The transport chute has a plurality of transport surfaces through partition walls in parallel with the solid material transport direction, and a decompression box and hose for each dewatering net on each transport surface. The automatic valve attached to each hose is an automatic valve that opens and closes with a time difference, or has a plurality of conveyance chutes, and a decompression box and hose for each dehydration net of each conveyance chute If the automatic valve attached to each hose is an automatic valve that opens and closes with a time difference, the suction force always applied from the vacuum pump is sequentially applied to each dewatering net of each conveyance chute. By switching and using, even if a large amount of solid matter is continuously charged, it can be efficiently dehydrated.

Hereinafter, the vibration type vacuum dehydrating apparatus according to the present invention will be described in detail with reference to the drawings.
FIG. 1 is an explanatory side view of an embodiment of a vibrating vacuum dehydrating apparatus according to the present invention, FIG. 2 is an explanatory plan view of FIG. 1, and FIG. FIG. 4 is an explanatory plan view showing another embodiment of the vibration type vacuum dehydrating apparatus according to the present invention, which is mounted with a gap between them, and FIG. 4 shows one conveying chute through a partition wall in parallel with the conveying direction of the solid matter. FIG. 5 is an explanatory plan view showing still another embodiment of the vibratory vacuum dehydrator according to the present invention having two dewatering nets, and FIG. 5 shows the vibratory vacuum dehydrator according to the present invention having two transport chutes. It is a plane explanatory view showing other examples.

  In the drawings, reference numeral 1 denotes a conveying surface 1a into which a wet solid material is introduced from above and a lower side of the conveying surface 1a over the entire length in the width direction. The narrowest opening width is 0.05 to 0.3 mm. This is a transport chute which is composed of a dewatering net 1b made of a wedge wire screen and is supported by a flexible support member 2 which will be described later while being inclined in the longitudinal direction. The conveyance chute 1 is preferably formed of stainless steel or the like having high corrosion resistance, and the shape of the conveyance chute 1 is such that side walls are erected on both sides and the upper surface is opened, or when it is used outdoors, it is protected from rain. For this purpose, those having an upper surface except for a solid material charging portion can be used.

  Reference numeral 2 denotes a flexible support member that supports the transport chute 1, and supports the weight of the transport chute 1 and the solid substance containing moisture put on the transport chute 1 and continuously vibrates the transport chute 1. It may be anything so long as it does not interfere with it, and it may be composed of a spring or the like.

  Reference numeral 3 denotes a vibration exciter that continuously vibrates the entire conveyance chute 1 in the vertical direction. As the vibration exciter 3, a vibration motor or the like can be used. Moreover, the amplitude of the conveyance chute 1 by the vibration exciter 3 needs to be 0.5 to 4.0 mm, and if it exceeds 4.0 mm, the solid matter on the dewatering net 1b greatly jumps up at the time of suction. If the suction cannot be performed and the amplitude is less than 0.5 mm, the solid matter cannot be transported by the vibration of the transport chute, and the solid matter that has entered the mesh of the dewatering net 1b is ejected by the vibration to prevent clogging. I can't.

  Reference numeral 4 denotes a decompression box installed below the dewatering net 1b. When a plurality of dewatering nets 1b are provided, the decompression box 4 is installed for each dewatering net 1b.

  Reference numeral 5 denotes a water storage tank into which water and fine solids dropped into the decompression box 4 are introduced. The water storage tank 5 is directly depressurized by a vacuum pump 7 described later, so that the pressure state can be understood. It is preferable that a pressure gauge or the like is provided in the.

  Reference numeral 6 denotes a hose for introducing water and fine solids falling into the decompression box 4 into the upper part of the water storage tank 5. Since this hose 6 has one end connected to the upper part of the water storage tank 5, the inside of the hose 6 is also depressurized or becomes atmospheric pressure. used.

  A vacuum pump 7 sucks air in the water storage tank 5 in order to depressurize the decompression box 4 through the hose 6.

  Reference numeral 8 denotes an automatic valve installed in the hose 6 in order to intermittently cut off the communication between the decompression box 4 and the water storage tank 5. The water storage tank 5 is decompressed by the vacuum pump 7 and the automatic valve 8 installed in the hose 6 is opened, so that the inside of the decompression box 4 can be decompressed via the hose 6.

  Reference numeral 9 denotes a safety valve for taking air into the water storage tank 5 from the outside when the internal pressure of the water storage tank 5 becomes a specified value or less. If this safety valve 9 is installed, even if an unexpectedly large amount of wet solid matter is sent to the dewatering net 1b and is sucked or unexpectedly clogged, it will enter the water storage tank 5 from the outside. Since air can be taken in, it is preferable that various devices are not damaged by excessively low pressure during suction. If only one dewatering net 1b is provided, closing the automatic valve 8 installed on the hose 6 may stop the vacuum pump 7 to prevent the water tank 5 from becoming an abnormally low pressure. In some cases, the driving speed of the vacuum pump 7 must be reduced. If the safety valve 9 is provided, the vacuum pump 7 is always driven and the suction pump is intermittently dehydrated only by opening and closing the automatic valve 8. It can be done.

  In addition, a plurality of dewatering nets 1b,... Are arranged on the lower side of the conveying surface 1a in the solid material conveying direction, and a depressurizing box 4 and a hose 6 are attached to each dewatering net 1b. In the case where the automatic valves 8 attached to the respective hoses 6 are automatic valves 8 that open and close with a time difference, the suction force by the vacuum pump 7 is switched for each dehydration net 1b. It is preferable that the vacuum pump 7 can be efficiently dehydrated in a state where the vacuum pump 7 is always driven, and the transport chute 1 includes a plurality of transport surfaces 1a,... Via partition walls in parallel with the solid material transport direction. A decompression box 4 and a hose 6 are attached to each dewatering net 1b of each transport surface 1a,..., And the automatic valve 8 attached to each hose 6 is an automatic valve 8 that opens and closes with a time difference. A plurality of transport chutes 1,. When the depressurization box 4 and the hose 6 are attached to each dewatering net 1b of the feeding chute 1,... And the automatic valve 8 attached to each hose 6 is an automatic valve 8 that opens and closes with a time difference. For this purpose, it is preferable to switch the suction force of the vacuum pump 7 for each dehydration net 1b so that the vacuum pump 7 can be efficiently dehydrated while being constantly operated.

  In order to actually use the vibration type vacuum dehydrating apparatus according to the present invention having such a structure, first, as shown in FIG. The solid material moistened from the upper side of the conveyance chute 1 onto the conveyance surface 1a of the conveyance chute 1 while being supported by the support member 2 and constantly vibrated with the vibration exciter 3 mounted on the left and right outer surfaces of the conveyance chute 1, for example. Throw things in. The wet solid is highly adherent and difficult to transport, but the transport chute 1 is inclined in the longitudinal direction and is vibrated in the vertical direction by the shaker 3, so the wet solid is transported by the transport chute 1. It is transported downward on the surface 1a at a slow speed. In addition, since the wet solid matter is vibrated in the vertical direction by the vibration exciter 3, the dewatering net installed on the lower side in a uniform state without concentrating on a specific place on the transport surface 1a. Move to 1b. The wedge wire screen constituting the dewatering net 1b is installed over the entire length in the width direction of the conveyance surface 1a, and the narrowest opening width is 0.05 to 0.3 mm. The longitudinal direction of each wedge wire is the conveyance chute 1. It may be mounted so as to coincide with the longitudinal direction of the transport chute or may be mounted so as to coincide with the width direction of the transport chute 1.

  A depressurizing box 4 is mounted below the dewatering net 1b. The depressurizing box 4 is opened to the outside by the upper dehydrating net 1b. Since the solid material is placed and sealed, the suction force is sufficiently transmitted to the solid material.

  The decompression box 4 is connected to the water storage tank 5 via a hose 6, and the air in the water storage tank 5 is sucked and decompressed by the vacuum pump 7. The inside is also depressurized, and the wet solid matter on the dewatering net 1b located above the depressurizing box 4 is sucked and dehydrated. Although the vacuum pump 7 can be directly connected to the decompression box 4 for depressurization, the vibration-type vacuum dehydrator according to the present invention intermittently depressurizes the depressurization box 4 for suction dehydration. Instead of directly connecting the vacuum pump 7 to the decompression box 4, it is connected via the hose 6 provided with the automatic valve 8 as described above, and intermittent decompression is achieved by using this automatic valve 8. It is done easily. Further, by providing the water storage tank 5 between the decompression box 4 and the vacuum pump 7, not only suction dehydration but also the dehydrated water can be easily guided to the water storage tank 5.

  In addition, when only one dewatering net 1b is provided as shown in FIG. 2, if the vacuum pump 7 is always operated, when the automatic valve 8 of the hose 6 is closed when the suction is shut off, the inside of the water storage tank 5 is maintained. There may occur a phenomenon in which the vacuum pump 7 must be stopped due to an abnormally low pressure state. Therefore, as shown in FIG. 1, a pressure gauge is attached to the water storage tank 5 to measure the internal pressure, and when the internal pressure of the water storage tank 5 falls below a specified value, a safety valve 9 is provided for taking air into the water storage tank 5 from the outside. For example, even if only one dewatering net 1b is provided, the suction dewatering operation can be performed while the vacuum pump 7 is always operated. Further, if the safety valve 9 is provided in this way, even if an unexpectedly large amount of wet solid matter is sent to the dewatering net 1b and sucked or unexpected clogging occurs, air is externally discharged. Since it is taken in, the pressure does not become excessively low during suction, and various equipment is not damaged.

  Further, when only one dewatering net 1b is provided, the suction force by the vacuum pump 7 is used only intermittently, but two dewatering nets 1b and 1b are solidified on one transport chute 1 as shown in FIG. If the suction force of the vacuum pump 7 is sequentially switched and transmitted to the decompression boxes 4 and 4 provided in the dewatering nets 1b and 1b, respectively, by attaching them at intervals in the material transport direction, the suction force of the vacuum pump 7 Can be efficiently dehydrated without waste.

  When it is necessary to dehydrate a large amount of solids, the transport chute 1 is provided with a plurality of transport surfaces 1a,... Via partition walls in parallel with the transport direction of the solids as shown in FIG. A decompression box 4 and a hose 6 are attached to each dewatering net 1b of the transport surface 1a,..., And the automatic valves 8 attached to the respective hoses 6 are automatic valves 8 that open and close with a time difference. 5 includes a plurality of conveying chutes 1... And a depressurizing box 4 and a hose 6 are attached to each dewatering net 1 b of each conveying chute 1... And an automatic valve 8 attached to each hose 6. Is an automatic valve 8 that opens and closes with a time difference, if the suction force constantly applied from the vacuum pump 7 by the automatic valve 8 attached to each hose 6 is sequentially switched and used, a large amount of solid Easily suck and dehydrate even objects Door can be.

  And in the aspect shown in FIG. 4, the two conveyance surfaces 1a and 1a are formed by installing a partition wall in the center of the comparatively big conveyance chute 1. In this embodiment, in order to distribute the wet solid material to the left and right transport surfaces 1a and 1a, a separate solid material sorting device may be provided. However, the wet solid material is simply disposed on the transport surface 1a of the transport chute 1. If it is inserted into the upper center, the transport chute 1 is constantly vibrated and transported while being evenly distributed. Therefore, the transport chute 1 is distributed evenly to the left and right transport surfaces 1a and 1a at the upper end of the partition wall. It is done. Further, in the embodiment shown in FIG. 5, since the vacuum pump 7 and the water storage tank 5 are shared in the vibration type vacuum dehydrator of the embodiment shown in FIG. 1, the solid matter can be sucked and dehydrated effectively with inexpensive equipment. is there. 4 and 5, when the automatic valve 8 is operated so as to stop the suction dehydration in the other dewatering net 1b when the one dehydration net 1b performs the suction dehydration, the vacuum can be obtained. The operating efficiency of the pump 7 can be significantly increased.

  If the amplitude of the transport chute 1 is too large, the solid matter will be violated on the dehydration net 1b during suction dehydration, and not only sufficient dehydration will occur, but also the solid matter that has jumped up will enter the net of the dehydration net 1b and become clogged. If it is too small, the wet solid matter having high adhesion cannot be sufficiently conveyed, and the effect of removing the solid matter entering the mesh of the dewatering net 1b is small and clogging occurs. Therefore, the amplitude of the conveyance chute 1 needs to be 0.5 to 4.0 mm.

  In the vibration type vacuum dehydrating apparatus according to the present invention, the wet solid matter on the dewatering net 1b by the suction means using the dewatering net 1b composed of a fine wedge wire screen having an opening width of 0.05 to 0.3 mm. Therefore, it is possible to sufficiently dehydrate a solid substance having a very small particle diameter, which has been difficult to dehydrate until now. Since it is constantly vibrated with an amplitude of 0 mm, solids hardly adhere to the dewatering net 1b even during suction dehydration, and even if solids enter the net of the dehydration net 1b during suction dehydration, Since vibration is applied even when the suction is cut off, the solid matter that has entered the mesh of the dewatering net 1b is easily ejected by large vertical vibrations.

It is side explanatory drawing of one Example of the vibration-type vacuum dehydration apparatus which concerns on this invention. FIG. 2 is an explanatory plan view of FIG. 1. It is plane explanatory drawing which shows the other Example of the vibration-type vacuum dehydration apparatus which concerns on this invention by which two dehydration net | networks are mounted | worn with the space | interval in the conveyance direction of a solid substance below the conveyance surface. It is a plane explanatory view showing a further embodiment of the vibration type vacuum dehydrating apparatus according to the present invention, in which two dewatering nets are provided on one conveyance chute in parallel with the solid material conveyance direction through a partition wall. It is plane explanatory drawing which shows other Example of the vibration-type vacuum dehydration apparatus which concerns on this invention provided with two conveyance chutes.

Explanation of symbols

1 Transport chute
1a Transport surface
1b Dehydration net 2 Support member 3 Exciter 4 Decompression box 5 Water storage tank 6 Hose 7 Vacuum pump 8 Automatic valve 9 Safety valve

Claims (5)

  The conveying surface (1a) into which the wet solid material is introduced from above and the entire widthwise direction are arranged on the lower side of the conveying surface (1a). The narrowest opening width is 0.05 to 0.3 mm. A transport chute (1) which is composed of a dewatering net (1b) composed of a certain wedge wire screen and is supported by a flexible support member (2) while being inclined in the longitudinal direction; 1) A vibration exciter (3) that continuously vibrates the whole in the vertical direction with an amplitude of 0.5 to 4.0 mm, and a decompression box (4) installed below the dewatering net (1b) A hose (6) for introducing water and fine solids dropped into the decompression box (4) into the upper part of the water storage tank (5), and the decompression box ( 4) A vacuum pump (7) for sucking air in the water storage tank (5) in order to depressurize the interior, the pressure reducing box (4) and the water storage tank An oscillating vacuum dehydrator comprising an automatic valve (8) installed in the hose (6) for intermittently blocking communication with the tank (5).   2. The vibration type vacuum dewatering device according to claim 1, wherein a safety valve (9) is provided in the water storage tank (5) for taking in air from the outside into the water storage tank (5) when the internal pressure becomes a specified value or less.   A plurality of dewatering nets (1b,...) Are arranged on the lower side of the conveying surface (1a) in the conveying direction of the solid material so that the dewatering nets (1b,. The box (4) and the hose (6) are attached, and the automatic valve (8) attached to each hose (6) is an automatic valve (8) that opens and closes with a time difference. The vibration-type vacuum dehydrator as described.   The transport chute (1) is provided with a plurality of transport surfaces (1a,...) Through partition walls in parallel with the solid material transport direction, and each dewatering net (1b) on each transport surface (1a,. A box (4) and a hose (6) are attached, and the automatic valve (8) attached to each hose (6) is an automatic valve (8) that opens and closes with a time difference. The vibration-type vacuum dehydrator according to any one of the above. A plurality of conveyance chutes (1,...) Are provided, and a depressurization box (4) and a hose (6) are attached to each dewatering net (1b) of each conveyance chute (1,. The vibration type vacuum dewatering device according to any one of claims 1 to 3, wherein the automatic valves (8) mounted on 6) are automatic valves (8) that open and close with a time difference.

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