JPH0621710U - Solid-liquid separation device with built-in spiral separator with gap holding plate - Google Patents

Abstract

(57) [Summary] [Purpose] When a liquid containing suspended particulate matter is efficiently subjected to solid-liquid separation into a suspended particulate matter and a treated liquid under high pressure by a spiral separator, a part of the suspended particulate matter is used. Are prevented from being mixed into the treatment liquid, and the original excellent performance of the spiral separator is exhibited. [Structure] A solid-liquid separation means, in which one end of a spiral separator is closed and a treatment liquid outflow pipe is connected to the other end, is incorporated in a separation processing apparatus, and liquid is sucked or passed through a gap of the spiral separator. Then, the suspended liquid is trapped by the spiral separator to perform solid-liquid separation of the treatment liquid and the suspended granule. In the spiral separator, the winding and the gap of the spiral separator are separated. The saw-toothed mounting portions provided on the upper and lower ends of the gap holding plate are inserted to form a gap in a predetermined range for performing solid-liquid separation processing between each winding and the gap holding plate. A solid-liquid separation device incorporating a spiral separator with a gap holding plate attached.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 In the present invention, for example, a gap holding plate is provided to separate the suspended particulate matter from the coolant waste liquid containing the suspended particulate matter such as chips, metal powder, cuttings, and crushed materials discharged from machine tools. The present invention relates to a solid-liquid separation device containing a spiral separator.

[0002]

[Prior art]

 Regarding separation of suspended particulate matter from a liquid, the applicant has focused on a spiral separator having a gap between windings formed by spirally winding a metal wire or a synthetic resin wire. We have developed a special solid-liquid separation means that closes one end and connects the processing liquid outflow pipe to the other end. In this spiral separator, liquid is passed through the gap into the spiral separator, and suspended particles are captured by the spiral separator for solid-liquid separation. In addition, the applicant has filed several utility model registration applications (Japanese Patent Application No. 3-83690, Japanese Patent Application No. 3-108476, Japanese Patent Application No. 4-13656, and others).

Conventionally, screens, porous plates, and the like that have been used to separate suspended particulates from liquids are incapable of solid-liquid separation because suspended particulates are easily attached and accumulated and clogged. Therefore, it is necessary to frequently clean the screen, the perforated plate, etc., and the operation of the device must be interrupted each time, and the cleaning of the screen, the perforated plate, etc. is troublesome, which takes time and labor There was a drawback that the efficiency of the separation process deteriorated.

On the other hand, as shown in FIG. 1, the above-mentioned spiral separator is formed by winding a metal wire or the like in a spiral shape, that is, a coil spring shape, and a gap 3 for separating solid and liquid between the windings 2. To form a spiral separator 1, and one end of the spiral separator 1 is closed by a side plate 4, and a processing liquid outflow pipe 6 having a pump 5 attached to the other end is connected to form a solid-liquid separation means. It is a thing. Then, such a spiral separator 1 is built in the separation treatment device 9, the pump 5 of the treatment liquid outlet pipe 6 is operated, and the liquid among the liquids containing suspended particulate matter is separated into the spiral separator 1 The solid-liquid separation treatment of the liquid and the suspended particulate matter is carried out by suctioning from the gap 3 of the above and trapping the suspended particulate matter on the gap 3 of the spiral separator 1 and the side surface of the helical separator 1. And has the following features.

[Figure 1]

(1) In a conventional separating means such as a screen or a perforated plate (punching metal), the mesh, slits, liquid passage holes constituting the mesh, the length, the width, and the diameter of the suspended material for separating Depending on the suspended particulate matter, it is impossible to change or adjust, and it was necessary to change or adjust each mesh, slit, or liquid passage hole. The shape-separator 1 does not adjust each of the gaps 3 one by one, but simply presses or extends the entire spiral-shape separator 1, depending on the suspended particulate matter to be separated, and other solid-liquid particles. It is possible to set and adjust the width of the gap 3 to be appropriate and uniform according to the separation conditions.

(2) The surface of the spiral separator 1 is not flat, and the outer surface of the metal wire that is the constituent material of the winding 2 is a circular curved surface. Since the outer shape is a cylindrical curved surface, the contact between the suspended particulate matter and the spiral separator 1 becomes point contact, and in most cases, most of the particles separated by the gap 3 and the outer surface of the spiral separator 1 are contacted. Suspended particles do not adhere to these curved surfaces, and even if they adhere, they immediately peel off and fall.

(3) The gap of the spiral separator 1 is a long gap that is continuous in a spiral shape, and has a special feature such as a mesh, a slit, or a liquid passage hole that constitutes a conventional screen or a perforated plate. Since the size of the suspended particulate matter is not divided, the suspended particulate matter easily slips and falls without getting caught in the gap 3 or getting stuck therein, and is unlikely to adhere to the gap 3.

(4) Since the spiral separator 1 has a spiral and elastic structure, when the coolant liquid is sucked from the gap 3 and passes through the spiral separator 1, The spiral separating body 1 vibrates or moves in a meandering manner, and the suspended particulate matter trapped on the gap 3 of the spiral separating body 1 and the side surface of the spiral separating body 1 is always easily shaken off.

As described above, the spiral separator 1 has an adjustable structure and has an excellent structure in which suspended particulate matter is extremely unlikely to adhere and clogging due to suspended particulate matter is extremely unlikely to occur. Therefore, the solid-liquid separation treatment can be performed for a long time, the cleaning of the separation means is not required, and the solid-liquid separation treatment efficiency can be dramatically improved. There is also an advantage that the structure of the liquid separation processing apparatus can be simplified, the processing operation, operation, maintenance and management of the apparatus can be facilitated, and the initial and running costs of the solid-liquid separation processing apparatus can be reduced.

However, when the liquid containing suspended particulate matter is efficiently subjected to the solid-liquid separation treatment under high pressure, the spiral separator 1 can increase the pressure of only the liquid more than the liquid containing suspended particulate matter. When sucking efficiently, the spiral separator 1 vibrates violently, and the intervals 3 between the spiral separators 1 do not uniformly expand and contract, but partially expand and contract. There was a case where 3 was greatly extended, and a phenomenon in which a part of the suspended particulate matter was mixed with the processing liquid from this position, which sometimes lowered the purity of the processing liquid.

[0011]

[Problems to be solved by the device]

 According to the present invention, when the liquid containing suspended particulate matter is efficiently subjected to solid-liquid separation under high pressure by the spiral separator 1, the interval 3 of the spiral separator 1 is expanded and contracted within a predetermined range. By doing so, it is possible to prevent the deterioration of the purity of the treatment liquid due to the inclusion of suspended particulate matter in the treatment liquid, to perform the solid-liquid separation treatment efficiency, and to fully exhibit the original performance of the spiral separator 1. It is in.

[0012]

[Means for Solving the Problems]

 The present invention relates to a solid-liquid separating means, which is a spiral separator 1 having a gap 3 between windings 2 formed by spirally winding a metal wire or a synthetic resin wire. One of which is closed and one end of which is connected with a treatment liquid outflow pipe 6 is incorporated into a separation treatment device so that the liquid is passed through or sucked from the gap 3 of the spiral separator 1 to form a suspended granular material. By trapping the substance in the gap 3 of the spiral separator 1 and the side surface of the spiral separator 1, it is possible to separate the treatment liquid and the suspended particulate matter in the spiral separator 1 by Inserting a sawtooth-shaped mounting portion 8 provided at the upper end or the lower end of the gap holding plate 7 with a gap between the winding 2 of the separating body 1 and between each winding 2 and the gap holding plate 7, The gap 3 for performing the solid-liquid separation process is formed.

Further, according to the present invention, a spiral conveyor 10 that rotates integrally with the spiral separator 1 is attached to the outside of the spiral separator, and the outer peripheral surface of the spiral conveyor 10 is The suspended granular material, which is formed close to the inner surface of the separation processing device 9 and is separated by the gap 3 and the outer surface of the spiral separator 1 and settled on the inner surface of the separation processing device 9, is conveyed by the spiral conveyor 10. Then, it is efficiently discharged to the outside of the separation processing device 9.

Further, according to the present invention, the solid-liquid separation by the spiral separator 1 described above is interrupted, and the pressurized processing liquid or the pressurized processing liquid and the pressurized gas is discharged from the processing liquid outflow pipe 6 in a spiral manner. By press-fitting into the inside of the separating body 1 and jetting from the gap 3 of the spiral separating body 1, the suspended particulate matter trapped in the gap 3 and the outer surface of the spiral separating body 1 is effectively peeled off. Separated and washed.

Finally, in the present invention, the spiral separators 1 having the same small diameter are multiply provided in the above-mentioned spiral separators 1, and each spiral separator 1 is provided in each spiral separator 1. The winding-shaped winding 2 is provided with a gap, and a saw-tooth-shaped mounting portion 8 provided at the upper end or the lower end of each gap-holding plate 7 is inserted, so that a solid-liquid solution is formed between each winding 2 and each gap-holding plate 7. A multi-stage and precise gap 3 is formed for separation processing.

[0016]

[Action]

 Regarding the efficient solid-liquid separation treatment of the treatment liquid and the suspended particulate matter under high pressure by the spiral separator 1, by inserting the gap holding plate 7 into the spiral separator 1, the spiral separation member 1 is screwed. The gap 3 of the separator 1 is configured to expand and contract within a predetermined range, and the gap 3 of the spiral separator 1 is prevented from partially expanding and contracting so that the particulate matter suspended in the treatment liquid is formed. Make sure that some of the

[0017]

【Example】

 The present invention will be described with reference to FIG. 2 by taking a coolant waste liquid containing suspended particles such as chips and cuttings discharged from a machine tool as an example. 1 is a spiral separator, and 1 is a spiral separator. For example, a structure in which a subzero-hardening-treated stainless steel wire is wound in a spiral shape and has a gap 3 between the windings, that is, a structure in which a coil spring is wound, and one end of the spiral separator 1 is a side plate 4. A processing liquid outflow pipe 6 to which a pump 5 is attached, for example, is connected to the other end as suction means at the other end, and a gap having a serrated mounting portion 8 at the upper end or the lower end is provided in the spiral separator 1. Insert the holding plate 7.

As shown in FIG. 3, the gap holding plate 7 is inserted into the spiral-shaped separator 1 in such a manner that the saw-toothed mounting portion 8 provided at the upper end or the lower end of the gap holding plate 7 is spiral-shaped. A space 3 for performing a solid-liquid separation process is formed between each winding wire 2 and the gap holding plate 7 by fitting each winding wire 2 of the separation body 1 with a gap. Is 0.08-0. It is made to expand and contract within a predetermined range of 12 mm.

The diameter and length of the spiral separator 1 are appropriately determined depending on the processing conditions such as the type of suspended particulate matter in the liquid, the concentration of suspended particulate matter, the purpose of separation, the accuracy of separation, etc. In this case, a wire having a diameter of 2 to 50 cm and a length of 8 to 500 cm is used, and the wire diameter and the interval of the winding wire 2 forming the spiral separator 1 are, for example, 0.2 mm such as chips. When separating a suspension of up to 5 mm, the wire diameter of the spiral separator 1 is preferably about 3 to 5 mm, and the spacing between the windings 2 is preferably about 1.75 to 2 mm.

The gap holding plate 7 has a saw-like shape with a plate thickness of about 1.6 mm, and each of the sawtooth-shaped mounting portions 8 provided at the upper end or the lower end of the gap holding plate 7 has a spiral separating member. It is fitted into the spiral separator 1 so as to form the above-mentioned predetermined gap 3 by fitting it with a certain gap between the respective windings 2 of No. 1 and, for example, chips or the like. At the time of separating the suspension of 0.2 to 5 mm, in the case of the spiral separating body 1 having an outer diameter of 36 mm and an inner diameter of 29 mm, the peak portion of the serrated mounting portion 8 is around 32.5 mm. It is desirable that the valley portion is around 28 mm.

If the length of the spiral separator 1 is the same, the gap 3 of the gap holding plate 7 of the winding 2 is small and the separation area is large, and the separation accuracy is improved, but due to the increase in liquid resistance. There are also problems such as a decrease in separation flow rate, a decrease in separation capacity due to increased clogging, a reduction in separation time, and the like, and the gap 3 between the winding 2 and the gap holding plate 7 is large and vice versa. Therefore, the winding 2 of the spiral separator 1 and the gap 3 of the gap retaining plate 7 take into consideration processing conditions such as the type of suspended particulate matter in the liquid, the concentration of suspended particulate matter, the purpose of separation, and the precision of separation. Will select the most suitable one.

The type of the spiral separator 1 is a pulling spring type in which the gap 3 of the winding is adjusted to a constant width by pulling (the gap is highly retained), and the gap 3 of the winding is pressed to make the gap 3 constant. Push spring type that adjusts to the width (useful when backwashing because the gap widens when released), torsion spring type that twists and adjusts the gap 3 of the winding to a constant width without pulling or pressing There are three types (high vibration), so you can use them according to the purpose of separation.

The material of the spiral separator 1 and the gap retaining plate 7 is optimal in that the stainless steel wire subjected to the sub-zero hardening treatment described above is highly elastic, but other than this, ordinary stainless steel is also used. Any material having high elasticity such as a wire, a synthetic resin wire, or an iron wire coated with a synthetic resin can be used. Since the spiral separator 1 has a characteristic that it is easily vibrated because of its spiral structure, the smaller the wire diameter of the winding wire 2 of the spiral separator 1, the better the vibration characteristics of the spiral separator 1. Therefore, an appropriate wire diameter may be selected in combination with the processing conditions such as the type and concentration of the suspended particulate matter described above.

Further, as shown in FIG. 4, the spiral separator 1 is loaded with spiral conveyors 10 on the outer side of the spiral separator 1 so as to rotate integrally with the spiral separator 1. Alternatively, in this case, the outer peripheral surface of the spiral conveyor 10 is arranged close to the inner surface of the separation processing device 9.

Similar to the spiral separator 1, the spiral conveyor 10 is also optimal in that the stainless steel subjected to subzero hardening is rich in physical strength, but other than this, Any material with high physical strength such as ordinary stainless steel or steel can be used.

The inner diameter of the spiral conveyor 10 is made slightly larger than the outer diameter of the spiral separator 1, the outer diameter of the spiral conveyor 10 is made slightly smaller than the inner diameter of the separation processing device 9, and the spiral conveyor is further made. The length of 10 is the same as the length of the spiral separator 1.

The pitch interval and the number of revolutions of the spiral conveyor 10 are appropriately determined according to the processing conditions such as the type of suspended particulate matter in the liquid, the concentration, the amount of separated suspended particulate matter, and the transportation speed. However, in the normal case, it is preferable to use a pitch interval in the range of 2 to 45 cm, and the number of rotations may be about 12 to 50 rotations / minute.

Next, the solid-liquid separation process of the present invention will be described with reference to FIG. 4, in which the spiral separator 1 is loaded with the spiral conveyor 10. While injecting the coolant waste liquid containing the suspended particulate matter into the separation treatment device 9, the pump 5 attached to the treatment liquid outflow pipe 6 is operated, and at the same time, the motor (not shown) attached to the separation treatment device 9 is operated. When the rotary pulley (not shown) is rotated to rotate the spiral separator 1 and the spiral conveyor 10, the suspended particulate matter in the coolant waste liquid is captured by the gap 3 and the outer surface of the spiral separator 1. Only the coolant liquid, which is the treatment liquid that has been separated and the suspended particulate matter has been removed, is sucked into the spiral separator 1 from the gap 3.

Then, even if the liquid containing the suspended particulate matter is strongly sucked so that the spiral separator 1 makes a noise, the spiral separator 1 has a predetermined interval 3 due to the existence of the interval holding plate 7. It expands and contracts uniformly in the range, does not expand and contract partially, and part of the suspended particulate matter is not mixed in the processing liquid. The coolant liquid sucked into the spiral separator 1 is collected from the treatment liquid outflow pipe 6, and is further captured by the gap 3 and the outer surface of the spiral separator 1 and dropped to the inner surface of the separation treatment device 9. The settled suspended particulate matter is conveyed by the spiral conveyor 10 and discharged to the outside from the drop port of the separation processing apparatus 9.

As described above, the coolant waste liquid containing the suspended particulate matter is caused to flow into the separation treatment device 9, and the pump 5 attached to the treatment liquid outflow pipe 6 is operated to move the coolant liquid to the gap of the spiral separator 1. 3 may be sucked, but in addition to this, a pump (not shown) attached to a stock solution inflow pipe (not shown) is operated to separate the coolant waste liquid containing suspended particulate matter in the treatment device 9. Alternatively, the coolant liquid may be forced to flow through the gap 3 of the spiral separator 1.

Further, the suspended particulate matter contained in the coolant waste liquid is not good in releasability and removability, and may adhere to the gap 3 and the side surface of the spiral separator 1 and become difficult to drop. In such a case, the solid-liquid separation process is interrupted for an extremely short time, and the coolant liquid already stored as the treatment liquid is pressurized to be injected into the inside of the spiral separator 1 from the treatment liquid outflow pipe 6 to separate the liquid. The spiral separator 1 having the elastic spiral structure is made flexible by instantaneously and suddenly ejecting from the gap 3 of the spiral separator 1 to form the spiral separator 1 and the gap. The releasability and removability of the suspended particulate matter adhering to 3 may be improved. In this case, furthermore, the instantaneous and rapid injection of the coolant may be intermittently performed several times, or if pressurized air is used together, the cleaning efficiency is good.

Further, depending on the type of suspended particulate matter and the solid-liquid separation treatment conditions, the solid 14 such as the suspended matter may easily adhere to the spiral separator 1 and may not easily fall. In this case, for example, by forcibly vibrating the spiral separator 1 with a vibrator or the like, separation and removal of suspended particulate matter adhering to the gap 3 and the outer surface of the spiral separator 1 can be promoted. Can also be considered.

Plural spiral separators 1 or spiral separators 1 provided with a spiral conveyor 10 may be installed depending on the processing conditions such as the flow rate of liquid, the type of solid, and the concentration. In this case, they are arranged parallel to one another at a distance.

The spiral separator 1 may be configured to rotate only the spiral conveyor 10 without rotating the spiral separator 1. Further, the suspended particulate matter that has fallen on the inner surface of the separation treatment apparatus 9 is not continuously carried out of the apparatus 9 and discharged, and the suspended particulate matter is intermittently separated by a notch or the like. When discharging to the outside of the device 9, it is not necessary to provide the spiral conveyor 1 to the spiral separator 1.

Further, the spiral separator 1 is formed by inserting one or more spiral separators 1 of the same structure having a small diameter into the inside of the spiral separator 1. Alternatively, the above-mentioned spacing plate 7 may be inserted into each spiral separator 1.

[0036]

[Effect of device]

 As described above, the spiral separator 1 is obtained by winding a metal wire or the like in a spiral shape, that is, a coil spring shape, and forming a gap 3 for solid-liquid separation between the windings 2. This gap 3 is Since the structure is continuous in a spiral shape, the entire spiral separator 1 is simply pressed or extended without adjusting the gaps 3 one by one, and the solid-liquid separation conditions are uniformly met. It is possible to set and adjust the width of the gap 3 to be appropriate and uniform, and even if solid-liquid separation is performed efficiently under high pressure, the presence of the gap holding plate 7 keeps the gap 3 at a predetermined value. In this range, the particles uniformly expand and contract within a certain range, and there is no partial uneven expansion and contraction. Liquid separation accuracy can be improved.

Further, in the spiral separator 1 of the present invention, even if the intermediary holding plate 7 is inserted in order to efficiently perform solid-liquid separation under high pressure, the characteristics described below are lost at all. No That is, the contact between the spiral separator 1 and the suspended particulate matter is point contact, and the suspended particulate matter does not adhere, and even if it adheres, it must be separated and dropped immediately. Since the gap 3 of the spiral-shaped separator 1 is not divided, suspended particles easily slip and fall without getting caught in the gap 3 or getting stuck. Since the spiral separator 1 has a spiral and elastic structure, the spiral separator 1 vibrates and moves in a meandering manner, and the suspended particulate matter is constantly shaken off.

When the spiral conveyor 10 is attached to the spiral separator 1, the suspended particulate matter separated by the spiral separator 1 and settled on the inner surface of the separation treatment device 9 is obtained. It can be transported and efficiently discharged to the outside of the separation processing apparatus 9.

As in claim 3, the solid-liquid separation is interrupted, and the pressurized treatment liquid or the pressurized treatment liquid and the pressurized gas are forced into the inside of the spiral separator 1 from the treatment liquid outflow pipe 6. By spraying from the gap 3 of the spirally divided separator 1, the suspended particulate matter trapped in the spirally separated body 1 can be effectively and easily peeled and washed.

When the spiral separators 1 are multiply provided in the spiral separators 1 and the sawtooth mounting portions 8 of the gap holding plates 7 are inserted into the spiral separators 1 as described in claim 4, The solid-liquid separation treatment area can be increased, and the solid-liquid separation treatment accuracy can be further improved.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a state in which a conventional spiral separator is incorporated in a separation processing device.

FIG. 2 is a cross-sectional view showing a state where the spiral separator with the spacing plate according to the present invention inserted therein is incorporated in a separation processing apparatus.

FIG. 3 is an enlarged cross-sectional view of a spiral-shaped separating body in which a spacing plate of the present invention is inserted.

FIG. 4 is a cross-sectional view showing a state where a spiral conveyor is attached to a spiral separator having a spacing plate of the present invention inserted therein and the spiral conveyor is built in a separation processing apparatus.

[Explanation of symbols]

 1 Spiral Separator 2 Winding 3 Gap 4 Side Plate 5 Pump 6 Processing Liquid Outflow Pipe 7 Interval Holding Plate 8 Mounting Part 9 Separation Processing Device 10 Spiral Conveyor

─────────────────────────────────────────────────── ─── Continuation of the front page (51) Int.Cl. ⁵ Identification code Office reference number FI Technical display location B01D 33/44 33/58 35/027 B23Q 11/00 U 7908-3C R 7908-3C

Claims (4)

[Scope of utility model registration request] 1. A spiral separator 1 having a gap 3 between windings 2 by spirally winding a metal wire or a synthetic resin wire,
One end of the spiral separator 1 is closed and the treatment liquid outflow pipe 6 is connected to the other end, and the spiral separator 1 is built in the separation treatment device 9 to allow the liquid to flow into the gap 3 of the spiral separator 1. When the suspended particulate matter is separated into the treatment liquid and the suspended particulate matter by passing the liquid from the inside to trap the suspended particulate matter on the gaps 3 of the helical separator 1 and the side surfaces of the helical separator 1. Inside the separating body 1, with a gap between the winding 2 of the spiral separating body 1, and inserting the saw-tooth mounting portions 8 provided at the upper and lower ends of the gap holding plate 7, A solid-liquid separation device incorporating a spiral separator provided with a gap holding plate that forms a gap 3 in a predetermined range for performing solid-liquid separation processing between the gap holding plate and the gap holding plate. 2. A spiral conveyor 1 that rotates integrally with the spiral separator 1 outside the spiral separator 1.
0 is attached, the outer peripheral surface of the spiral conveyor 10 is arranged close to the inner surface of the separation processing device 9, and the suspended granular material is separated by the spiral separator 1 and settled on the inner surface of the separation processing device 9. The solid-liquid separation device incorporating the spiral separator provided with the gap holding plate according to claim 1, wherein the solid-liquid separator is conveyed by a spiral conveyor 10 and discharged to the outside of the separation treatment device 9. 3. The solid-liquid separation of the treatment liquid and the suspended particulate matter by the spiral separator 1 is interrupted, and the treatment liquid pressurized or the treatment liquid pressurized and the gas pressurized is discharged from the treatment liquid outflow pipe 6. The suspended particulate matter trapped in the spiral spiral separator 1 is peeled off and washed by press-fitting it into the spiral spiral separator 1 and jetting it from the gap 3 of the spiral spiral separator 1. A solid-liquid separation device incorporating a spiral separator provided with the gap holding plate according to 2. 4. The spiral separator 1 is multiply provided in the spiral separator 1, and a gap is provided between each spiral separator 1 and the winding 2 of the spiral separator 1 to form a gap holding plate 7. A spiral with a saw-toothed mounting portion 8 provided at the upper end or the lower end thereof is inserted, and a gap holding plate that forms a gap 3 for solid-liquid separation processing is provided between each winding 2 and each gap holding plate 7. Solid-liquid separation device with a built-in separator.