KR19990006512A - Centrifugal separator - Google Patents

Abstract

The centrifugal separator according to the present invention includes a separator having an opening formed at least at one end and having a vertical axis, an idler means for rotating the separator by a vertical line away from its own axis by a predetermined axis, and a separator. It is equipped with the rotation means which rotates its own axis to an axis | shaft, and the introduction means which introduce | transduces the to-be-processed object to separate into a separating cylinder.

Description

Centrifugal separator

The present invention is a centrifugal separator, for example, contaminated muddy raw water, such as mud deposited in rivers, lakes, swamps, sewage containing iron, coal, etc., and contaminated muddy water from civil works. The present invention relates to a centrifugal separator used for separating water into water and semi-dehydrated solids, or for separating gas containing powder such as cement into powder and air.

In the prior art, various types of devices such as filter presses and centrifugal drum dehydrators have been used for this purpose.

In the conventional apparatus, any type of apparatus uses a filter, and since such a filter is likely to be clogged, it is cumbersome because it is necessary to clean or replace the filter in a short time.

In addition, when a filter is used, both must be treated such that, for example, the water after separation and the semi-dehydrated solids are not mixed again, but in particular, since the semi-dehydrated solids loses fluidity, the treatment is cumbersome.

The centrifugal separator according to the present invention can reliably separate solids from liquids or gases without cumbersome manipulations or treatments.

1 is a vertical fracture longitudinal cross-sectional view of the centrifugal separator according to the present invention.

Figure 2 is a vertical longitudinal cross-sectional view of the centrifugal separator according to the present invention.

Figure 3 is a perspective view of the separator of the centrifugal separator according to the present invention.

4 is a horizontal cross-sectional view of the centrifugal separator according to the present invention.

5 is a time chart of the separating action by the centrifugal separator according to the present invention.

Figure 6 is an explanatory view of the separating action by the centrifugal separator according to the present invention.

Fig. 7 is a vertical crushing longitudinal sectional view of the periphery of a separation vessel corresponding to Fig. 2 showing a modification of the centrifugal separator according to the present invention.

8 is a perspective view of a separator of the centrifugal separator according to the present invention;

9 is an explanatory view of a separation action by a separation cylinder of the centrifugal separator according to the present invention.

10 is a time chart of the separating action by the separating cylinder of the centrifugal separator according to the present invention.

Fig. 11 is a vertical crushing longitudinal sectional view of the periphery of a separation vessel corresponding to Fig. 7 showing another modification of the centrifugal separator according to the present invention.

12 is a perspective view of a separator of the centrifugal separator according to the present invention.

Figure 13 is an explanatory view of the separating action by the separating cylinder of the centrifugal separator according to the present invention.

14 is an explanatory view of a blocking effect of a filter of a separation cylinder of a centrifugal separator according to the present invention;

15 is an enlarged cross-sectional view of a filter of the centrifugal separator according to the present invention.

FIG. 16 is a cross-sectional view corresponding to FIG. 11 showing the case where the filter is two stages in the separating cylinder of the centrifugal separator according to the present invention. FIG.

Fig. 17 is a time chart of the separating action by the separating cylinder of the centrifugal separator according to the present invention.

<Explanation of symbols for main parts of drawing>

101: body

102: rotating body

103: separator

165: processing through hole

166: baffle

201: partition plate

211: filter

The centrifugal separator according to the present invention has a separator having at least one opening and having a vertical axis, an idler means for rotating the separator to a vertical line a predetermined distance away from its own axis, and the separator itself. Rotating means for rotating the axis of the shaft to an axis, and introducing means for introducing a processing object to be separated into the separating cylinder.

In the centrifugal separator according to the present invention, when a treatment product is introduced into a separation container, the introduced processing product is separated by a specific gravity difference between solids and liquids or gases in the processing material by centrifugal force due to idle, and the solids are separated from the separation container. At the same time, the liquid or gas is layered on its surface, and the layered liquid or gas is discharged through the opening of the separator, while, in between, if the separator changes the direction of rotation by rotation, The solids resist the centrifugal force and change its direction while being attached to the inner surface of the separator. If the centrifugal force is greater than the adhesive force of the solid, the solid is peeled off from the inner surface of the separator.

Therefore, according to the present invention, the processed material in which the solid matter is mixed can be reliably separated into the solid material and the liquid or gas without any troublesome operation or treatment.

Further, the workpiece is formed in the peripheral wall of the separator, the rotating means is intermittently controlled so that the workpiece passing hole is stopped inward, and the workpiece is stopped inward. The introduction means is preferably controlled intermittently so that it is introduced.

While the workpiece through-hole is inward, the workpiece is efficiently separated into solids and liquid or gas, and when the workpiece through-hole is outward, the solids are peeled off from the inner surface of the separator, and the solids are separated by centrifugal force. It is discharged through the processing through hole.

Further, the introduction means is provided with a hollow introduction body which is disposed inside the separation cylinder and revolves simultaneously with the separation cylinder, and the introduction body can have an inwardly processed object through hole and an outlet corresponding to each other.

The treatment discharged from the outlet is forcibly blown out by the centrifugal force due to idle, and the blown treatment is introduced into the separator through the inward treatment passage hole without causing congestion. For example, if the passage of the treatment product is bent, the treatment material is separated from the bend at the unprepared state, and the separated solids are attached to the wall of the passage and the passage may be blocked, but the treatment material is blown straight. There is no such concern.

Moreover, when the baffles are provided in the upper and lower stages in the separating cylinder, the passage of the processed object in the separating cylinder can be lengthened.

In addition, when the baffles are of a horizontal plate shape and the baffles are arranged so that neighboring baffles partially overlap when viewed from the axial direction of the separator, the passage of the treatment is further increased, and the separation efficiency of the treatment can be improved.

In addition, when the discharge hole is formed in the upper part of the separation container, and the outflow prevention wall is provided in the lower part of the separation container, ascending flow of the processing material in the separation container occurs due to the idle of the separation container.

In addition, the partition plate in the separating cylinder is located at a level above the outlet of the processing liquid of the introducing means and partially occupies the cross section of the separating cylinder. If the partition plate is capable of restraining the ascending flow by the centrifugal force caused by the processing passage hole inward, the separating action of the processing material in the separating container with the processing passage hole inward and the rotation of the separator is stopped. Can be surely performed.

In addition, if the rotating part of the separation cylinder is temporarily stopped while the processing object passage hole is turned inward and outward, the separating action of the processing object before being discharged from the processing passage hole is promoted.

In addition, when a filter is formed in the opening of the separating cylinder, the water discharged from the opening of the separating cylinder is filtered by the filter, so that the separating action is further promoted. In addition, even if the solids are to be attached to the filter, the solids to be attached are moved by the centrifugal force, so that the filter is not likely to be clogged.

An embodiment of the present invention will be described next with reference to the drawings.

Referring to FIG. 1, the centrifugal separator includes a hollow apparatus body 101, a rotating body 102 accommodated in the main body 101, and four vertical cylindrical separating cylinders 103 provided in the rotating body 102. ).

The apparatus main body 101 consists of a vertical cylindrical body wall 111 and a flat top wall 112 covering its upper opening.

The trough 113 is provided slightly above the middle of the inner surface height of the trunk wall 111, and at the same time, the discharge pipe 114 is installed to communicate with the trough 113. A horizontal band-shaped support bar 145 is fixed to the lower end of the trunk wall 111 so as to cross the lower opening of the trunk wall along the axis of the trunk wall. In the center of the upper surface of the support bar 145, the lower main bearing 144 is provided to be concentric with the axis of the trunk wall.

The main motor 171 is installed vertically upward near the top of the outer surface of the body wall 111. The main drive sprocket 172 is fixed to the output shaft of the main motor 171.

The shaft insertion through-hole 115 is formed in the center part of the upper wall 112, and the upper main bearing 116 is inserted in this.

The rotating body 102 is spaced apart from the rotating shaft 121 passing through the upper main bearing 116, the upper wall 122 directly mounted to the lower end of the rotating shaft 121, and the upper wall 122. It is disposed and provided with a lower wall 123 integrated with the upper wall 122 by the separating cylinder 103. Skirts 124 entered into the troughs 113 are continuous on the outer circumference of the upper wall 122.

The rotating shaft 121 is composed of a solid shaft portion 131 of the small diameter in the upper portion and a hollow shaft portion 132 of the large diameter in the lower portion. The solid shaft portion 131 protrudes upward through the upper main bearing 116, and the main driven sprocket 173 is fixed to the protruding portion. The main driven sprocket 173 is connected to the main drive sprocket 172 by a belt 174. The hollow shaft portion 132 is supported by the upper main bearing 116.

The sub-motor 181 fixed to the upper wall 122 of the rotor is accommodated in the hollow shaft portion 132. The rotating shaft of the sub-motor 181 penetrates through the upper wall 122 of the rotor, projects downward, and is supported by the sub-bearing 143. The sub drive sprocket 182 is fixed to the rotating shaft of the sub motor 181.

The distribution chamber 141 is mounted at the center of the upper surface of the lower wall 123. The sub bearing 143 is provided on the upper surface of the upper wall of the distribution chamber 141 through the support member 142. The lower center portion of the lower wall 123 is supported by the lower main bearing 144.

The upper and lower pipe insertion through holes 151 and 152 are formed on the lower wall of the distribution chamber 141 and the lower wall of the rotating body 102 so that the raw water supply pipe 153 penetrates them. have. At the edge of the upper pipe insertion through hole 151, a vertical annular jaw 154 is formed. The upper end of the raw water supply pipe 153 is provided with a sealing portion 155 having an inverted L-shaped cross section so as to surround the jaw 154. Four introduction pipes 156 are provided at equal intervals and radially on the circumferential wall of the distribution chamber 141. The four introduction pipes 156 extend toward the axis center of the four separation cylinders 103 and have an outlet 157 at the tip.

As shown in detail in FIG. 2, the separating tube 103 includes an upper tapered portion 161 and a lower straight portion 162 widened upward. The taper portion 161 is supported by the rotating body upper wall 122 and the straight portion 162 is supported by the bearings 163 and 164, respectively. The straight portion 162 is provided with a vertically long rectangular through-hole 165. The workpiece through hole 165 corresponds to the outlet 157 of the introduction pipe 156 when it is inward.

The baffle 166 is provided in the upper and lower stages of the straight part 162. The baffle 166 is horizontal semicircular as detailed in FIG. 3. The upper and lower neighboring baffles 166 overlap each other by 2/3 of the total.

The sub driven sprocket 183 is fixed to the upper end of the outer surface of the taper part 161. As shown in FIG. 4, the chain 184 is wound around the sub drive sprocket 182 and the sub driven sprocket 183.

When the main motor 171 is operated, the rotating body 102 rotates about its rotating shaft 121, and as the rotating body 102 rotates, the separating cylinder 103 moves around the axis of the rotating shaft 121. To be idle. On the other hand, when the sub-motor 181 is operated, the chain 184 is moved, whereby the four separation cylinders 103 rotate around their own axis at the same time.

The revolving speed of the separating cylinder 103 is appropriately set according to the properties of the raw water to be separated. For example, the circumferential speed of the revolution speed of the separating cylinder 103 is set to 500-1000 m / min. If the rotation radius of revolution is about 400 mm, the revolution speed will be 600 rpm.

As shown in FIG. 5, the revolving cylinder 103 is continuously operated. During this time, the raw water is intermittently supplied by turning the pump on and off. The interval is, for example, an interval of supplying for 1 minute and stopping supply for 1 minute. While the raw water is being supplied, the rotation of the separating cylinder 103 is stopped, and the processing passage hole 165 faces the rotation radius inside of the revolution. While the supply of raw water is stopped, the separating cylinder 103 is rotated only once, whereby the processing object passage hole 165 facing inward is directed outward and then inward again. The rotation of the separating cylinder 103 can be started at the same time as stopping the supply of raw water, even after stopping or after a predetermined time has elapsed. The rotation of the separating cylinder 103 may be rotated 360 degrees continuously, or may be rotated 180 degrees to stop, and may be rotated 180 degrees in the opposite direction after stopping for a predetermined time.

As shown in FIG. 6 (a), the distribution chamber through the supply pipe 153 in a state where the processing passage hole 165 of the separation tube 103 and the outlet 157 of the introduction pipe 156 correspond to each other. When the raw water B is supplied to the 141, the supplied raw water B is pushed to the circumferential surface of the distribution chamber 141 by centrifugal force by the revolution of the rotating body 102, and the outlet of the raw water B is introduced through the introduction pipe 156. Is discharged from 157. The raw water B discharged from the outlet 157 is further increased by the centrifugal force and blown straight, and flows in through the processing passage hole 165 in the separating cylinder 103. Since the raw water B is blown in a straight line, even if there is a slight gap between the edge of the processing passage hole 165 of the separation cylinder 103 and the edge of the outlet 157 of the introduction pipe 156, There is no fear that the enemy B will overflow in the gap.

After the introduction of the raw water B into the separating tank 103, when a predetermined time elapses, the raw water B is separated into the solid D and the water W, and the water W is the upper end of the separating cylinder 103. 6 (b), when the separating cylinder 103 is rotated 180 degrees, the separated solids D are discharged from the separating cylinder 103 through the processing passage hole 165. do.

In addition, with reference to FIGS. 7-10, another modification of the centrifugal separator is demonstrated. The basic structure of the centrifugal separator according to this modification is the same as the centrifugal separator shown in Figs.

As shown in FIG. 7 and FIG. 8, a partition plate 201 is provided in the upper and lower plural stages in the separating cylinder 103. The partition plate 201 is the same shape as the baffle 166 and is a horizontal semicircle, but all the partition plates 201 are arranged so that the whole overlaps with each other. In the state where the workpiece through-hole 165 faces inward, the partition plate 201 occupies a portion of a semicircle corresponding to the opposite side of the workpiece through-hole 165 in the cross section of the separating cylinder 103, and the partition The distal end surface of the plate 201 is perpendicular to the inward and outward directions corresponding to each other with the workpiece through-hole 156.

Next, the separating action will be described with reference to FIGS. 9 and 10.

As shown in Fig. 9 (a), when the workpiece through-hole 165 is inward and the separator cylinder 103 is stopped, the raw water B is supplied to the separator cylinder 103. The supply level of the raw water B is near the level of the lowermost partition plate 201. The supplied raw water B generates an ascending flow in the separating cylinder 103 by centrifugal force due to idle, and divides the partition plate 201 from the lower partition plate 201 to the upper partition plate 201. After the above, the amount of raw water B supplied by the action of one cycle is set so as not to exceed the partition plate 201 of the uppermost level (see FIG. 7). In this way, the raw water supplied by the action of one cycle is stored below the partition plate 201 of the uppermost level.

As shown in FIG. 7, the raw water B stored below the uppermost partition plate 201 is formed from the solids D while the separation cylinder 103 is stopped before the rotation of the separation cylinder 103 starts. Completely separated by water (W).

When the separating cylinder 103 starts to rotate, the partition plate 201 is also rotated at the same time as the separating cylinder 103, but as the front end surface of the partition plate 201 is shown by an imaginary line in FIG. 9 (b), When the water falls into the separated water W at an angle with respect to the inside and the outside directions, the separated water W rises over the partition plate 201 after the point P indicated by ● in 9 (b). Is discharged from the upper end of the separator (103).

As shown in Fig. 9 (c), when the separation cylinder 103 is rotated by 90 degrees, the rotation is stopped once. Although the time required for this rotation is relatively short, the water (W) separated by the centrifugal force received due to the difference in the adhesive force or fluidity of the separated solid (D) and the water (W) is affected by the rotation of the separation cylinder (103). Therefore, since the position moves to change from time to time, the water (W) is discharged from the separation container 103, but the solid material (D) has a property to stay in the place, the solid material (D) is the separation container 103 It remains in the separation cylinder 103 attached to the inner surface of the.

After the separation cylinder 103 is rotated 90 °, in the stopped state, the solid D is subjected to centrifugal force, so that the separation action of the solid D is further promoted, and the separated water W is separated from the separation cylinder 103. Is discharged from the top.

After a predetermined time elapses after the separating cylinder 103 is rotated 90 degrees, the rotating of the separating cylinder 103 is resumed. As shown in Fig. 9 (d), when the separation cylinder 103 rotates 90 ° again after the resumption of rotation, the workpiece through-hole 165 is turned outward, and the solid D subjected to centrifugal force is turned outward. It discharges from the processed material through-hole 165 which became.

Although the rotation of the separation cylinder 103 may be stopped at the time when the separation cylinder 103 is outward, it is not necessary to discharge since the solids D are discharged quickly. Moreover, when the separation cylinder 103 continues to rotate and rotates 180 degrees while the processing passage hole 103 is outward and the processing passage hole 165 is turned inward, one cycle of the separation cylinder 103 is performed. The action is complete. Instead of rotating the separating cylinder 103 by 360 degrees in one cycle, the separating cylinder 103 can be reversibly rotated by 180 degrees.

In this embodiment, the separation action is performed in a state in which all of the raw water is stored in the stationary state in a stationary state, which is very different from the above embodiment. In the above embodiment, raw water is supplied into the separating container, and the separated water is gradually discharged from the upper end of the separating container at the same time as the separating action. In this manner, when the treatment liquid is moved while the centrifugal force is applied, the solid matter is mixed with the moving water, which may lower the separation ability. In addition, if the centrifugal force is increased in order to increase the separation ability, the possibility of water taking solids increases, so even if the centrifugal force is increased, the improvement of the separation ability is not very expected. For this reason, in this embodiment, since the raw water is stopped in the separating barrel during the separating action, high separation ability can be expected.

In addition, with reference to FIGS. 11 to 17, another modification of the centrifugal separator will be described.

Referring to FIG. 11, in the centrifugal separator according to this modification, a filter 211 is used instead of the partition plate 201 in the separation tube 103 shown in FIG. 7. The filter 211 is just above the workpiece through-hole 165 and has a horizontal disc shape that covers the entire upper opening of the separation tube 103.

As shown in FIG. 12, the filter 211 consists of what is called a wedge wire, and has the parallel channel | path 221. As shown in FIG. In the state where the workpiece through-hole 165 is toward the center of revolution, the longitudinal direction of the passage 221 is directed toward the radius of revolution. As shown in detail in FIG. 15, the cross section of the passage 221 has a wedge shape. The bottom minimum width C of the passage 221 is about 30 mu.

While idling the rotating body 102, if raw water is supplied into the separating tube 103 through the outlet 157 of the introduction pipe 156 in the state where the processing passage hole 165 is inward (Fig. 13A), The raw water is stored under the filter 211. By centrifugal force due to the revolution, the raw water stored under the filter 211 is soon separated into water and solids, and the water of the separated water and solids passes through the filter 211 from the upper opening of the separation tube 103. Is discharged (FIG. 13B). On the other hand, the solids do not pass through the filter 211 and remain stored underneath (FIG. 13C). The separators 103 are rotated in accordance with the time when water is discharged from the separators 103. As a result, the workpiece through-hole 103 is in the outward state from the inward state. However, in this embodiment, as in the case of the embodiment shown in Figs. There is no need to stop it. When the workpiece through-hole 165 is in the outward state, the solid matter is separated from the inner surface of the separator cylinder 103 by centrifugal force due to the revolution of the rotating body 102, and the workpiece through-hole 165 is separated from the separator cylinder 103. Is discharged through (Fig. 13D). Subsequently, the treatment liquid may be supplied to the separating cylinder 103 with the treatment passage hole 165 facing inward again. The time chart of the above separation operation is shown in FIG.

As shown in detail in FIG. 14, when the separation action is started, a solid is attached to the front of the portion of the filter 211 that is in contact with the treatment liquid, and a solid is attached to the water passage of the filter 211, but Since the solid is easily pushed out of the water passage by the centrifugal force due to the idle, the water passage is not likely to be blocked by the solid, so the separated water passes smoothly through the water passage.

FIG. 16 shows an example of two stages of filters. In this case, the gap between the filters 231 and 232 is set so that the lower filter 231 is the primary filtration and the upper filter 232 is the final filtration.

In addition, instead of making the filter two stages in one separation cylinder, the centrifugal separator itself may be two stages. In this case, the primary filtration filter is used for the upper centrifugal separator, and the finishing filtration filter is used for the lower centrifugal separator.

As a clearance of the filter 232, about 5-50 micrometers may be effective. As the material of the filter, in addition to the wedge wire described above, a wire mesh, fabric, nylon fiber, ceramic, and the like are used.

Also in this modification, it is possible to use the baffle and partition plate used by the said modification.

Although the separation action of the liquid has been described above, the basic principle according to the present invention can be applied to the separation action of the gas as well as the liquid. In this case, based on the difference in the properties of the liquid and the gas, the above-described centrifugal separator will require some design changes. Examples thereof include gas conveying means, gas sealing means and the like.

The centrifugal separator according to the present invention can reliably separate solids from liquids or gases without cumbersome manipulations or treatments.

Claims (14)

A separation passage having an opening at least one end and having a vertical axis, Idle means for rotating the separator barrel in a vertical line away from its own axis by a predetermined distance; Rotating means for rotating the separating barrel about its own axis, Introduction means for introducing the processing material to be separated into the separation container Centrifugal separator characterized in that it comprises. According to claim 1, Process through-holes are formed in the peripheral wall of the separator, The rotating means is intermittently controlled so that the workpiece through hole stops in an inward state, A centrifugal separator, characterized in that the introduction means is intermittently controlled so that the workpiece is introduced when the workpiece passage hole is stopped inward. The said introduction means is provided with the hollow introduction body arrange | positioned inside an isolation | separation cylinder, and revolves simultaneously with a separation | separation cylinder, The introduction body has an inwardly processed workpiece passage hole and an outlet corresponding to each other. The centrifugal separator according to any one of claims 1 to 3, wherein a baffle is provided in a plurality of upper and lower stages in the separation cylinder. The method of claim 4, wherein the baffle is horizontal plate type, When viewed from the axial direction of the separator, the baffles are arranged so that neighboring baffles partially overlap. The centrifugal separator according to any one of claims 1 to 3, wherein a discharge port is formed at an upper end of the separating cylinder, and an outflow prevention wall is formed at a lower end of the separating cylinder. 7. The partition plate according to claim 6, wherein the partition plate in the separator is positioned at a level above the outlet of the treatment liquid of the introduction means and partially occupies a cross section of the separator, and with the treatment passage hole inward, A centrifugal separator, characterized in that the partition plate is capable of restraining the upward flow due to the centrifugal force due to the revolution of the processing material introduced into the separator by the action of one cycle. The centrifugal separator according to claim 7, wherein the rotation of the separator is temporarily stopped while the processing passage hole is inward and outward. The centrifugal separator according to any one of claims 1 to 3, wherein a filter is formed in the opening of the separator. The centrifugal separator according to claim 9, wherein baffles are provided at upper and lower plural stages in the separation cylinder. The method of claim 10, wherein the baffle is horizontal plate type, When viewed from the axial direction of the separator, the baffles are arranged so that neighboring baffles partially overlap. The centrifugal separator according to claim 9, wherein a discharge port is formed at an upper end of the separator, and an outflow prevention wall is provided at a lower part of the separator. 13. The introduction means according to claim 12, wherein the partition plate in the separator is positioned at a level above the outlet of the treatment liquid of the introduction means and partially occupies the cross section of the separator, and the one of the introduction means is provided with the treatment passage hole inward. A centrifugal separator, characterized in that the partition plate can restrain the upward flow due to the centrifugal force due to the revolution of the processing material introduced into the separator vessel by the action of a cycle. The centrifugal separator according to claim 13, wherein the rotation of the separator is temporarily stopped while the processing passage hole is inward and outward.