JP4147206B2 - Centrifuge - Google Patents

Description

  The present invention relates to a centrifugal separator, and in particular, a suspension composed of a plurality of components having different specific gravities can be efficiently separated without increasing the rotational speed of a rotating body that applies centrifugal force. The present invention relates to a centrifugal separator.

  Conventionally, factory waste liquids such as coolant and lubricant for work discharged from machine tools and factory equipment such as various cutting devices and polishing equipment, or domestic waste liquids produced as a result of consumer activities from offices and general households May be processed in advance before being discharged into a river or the like. These factory effluents and domestic effluents contain a large amount of impurities such as sludge, solids, and chemical substances, and some may cause pollution such as river water pollution and odors. It was. Furthermore, harmful components that may affect the natural environment or harm the health of the human body may be mixed. For this reason, national and local governments often restrict the discharge of these waste liquids directly into rivers, soils, etc., as described above. Furthermore, factory waste liquids discharged from factories and the like contain a lot of recyclable components, and separation processing such as filtration may be performed for reuse before discharging. In this separation process, a centrifugal separator that can be separated into a solid, a liquid, and the like by using a specific gravity difference of each component of the waste liquid by utilizing centrifugal force is often used.

  Here, a general configuration of the centrifugal separator is described. For example, a substantially conical rotator (bowl) with an opening facing downward, and a rotating mechanism that rotates the rotator around a cylinder axis at a high speed. It is known that it mainly includes a spraying unit that takes a processing liquid to be centrifuged into a bowl-shaped rotating body and sprays it vigorously toward the inner wall surface of the rotating body in a high-speed rotation state. It has been. Thereby, when the sprayed suspension reaches the inner wall surface of the rotating body rotating at high speed, it receives a centrifugal force by the rotation of the rotating body. That is, the force which moves toward the outer peripheral direction of a rotary body acts strongly. At this time, a high specific gravity component having a high specific gravity value is more likely to be affected by this action, while a low specific gravity component having a low specific gravity value is less likely to be affected by this effect than a high specific gravity component.

  Therefore, inside the rotating body, each component is separated due to the difference in specific gravity, and each region is formed. At this time, the substance having a high specific gravity component is always inhibited by the inner wall surface of the rotating body, although a force directed toward the outer peripheral direction is always applied by the centrifugal force of the rotating body. Thereby, a high specific gravity component is gradually deposited on the inner wall surface of the rotating body. When the layer thickness of the deposited layer due to the high specific gravity component reaches a certain value, the rotating body of the rotating body of the centrifugal separator is once stopped, and the high specific gravity component mainly made of solid matter is called, for example, a scraper. It peels from an inner wall surface using the plate-shaped member for scraping, and collect | recovers in the collection | recovery part of the high specific gravity component provided under the opening part. In addition, the solid substance which consists of this high specific gravity component may be called sludge etc.

  On the other hand, the low specific gravity component (mainly liquid component) separated by the centrifugal separation action of the rotating body is difficult to reach the inner wall surface due to the high specific gravity component deposited on the inner wall surface of the rotating body. Move upward. And it opens in the upper surface of a rotary body beforehand, is guide | induced to the exterior of a rotary body from a collection port, and is collect | recovered. Here, the recovery port is often provided on the inner peripheral side of the inner wall surface of the rotating body. Thereby, the processing liquid to be processed is centrifuged into a low specific gravity component and a high specific gravity component using the difference in specific gravity, and the low specific gravity component is recovered from above the rotating body, while the high specific gravity component is recovered from the rotating body. It can be discharged and recovered from below using a scraper or the like. As a result, the treatment liquid can be physically separated and can be separated individually. Thereafter, the low specific gravity component mainly composed of the centrifuged liquid can be directly discharged into a river or the like, or can be reused in the case of a coolant liquid or the like. On the other hand, since the recovered high specific gravity components are mainly solids such as sludge, they are treated by landfill.

  As a result, it is known as a conventional process liquid separation method, for example, a chemical purification method using chemicals, a biological purification method using microorganisms, or a filter material or adsorbent Compared with the filtration adsorption purification treatment method that collects solid matter using the above, it is easy to manage the labor and conditions related to the treatment, and therefore this centrifuge is widely used in many factories and the like. In addition, since chemicals, microorganisms, etc. are not used, it is possible to avoid the danger of separation work, and the cost of consumables such as filter media and adsorbents is almost required. It can be said that it is an excellent device in terms of not.

  By the way, in recent years, so-called “double-family households” are increasing as women advance into society. For this reason, it has been known that the ratio of household time in households tends to be low. In particular, due to the development of the restaurant industry, the trend of shortening the cooking and cooking time in the housework time is particularly remarkable, and food manufacturers and others are developing products to reduce these time is there.

  For example, improvements have been made to rice, which is a staple food for Japanese people, and “no-wash rice” has been developed that can eliminate the work of washing rice before rice cooking. In the past, when rice was cooked, water was previously washed several times with rice, and the highly sticky “Nuka” remaining on the surface of the rice was washed away during rice polishing. This strongly sticky Nuka cannot be removed by a conventional rice mill, and when it is cooked as it is, the Nuka component may impair the taste of white rice.

  Therefore, as mentioned above, “no-wash rice” was developed for the purpose of shortening housework (cooking) time and omitting time-consuming work, and its production and consumption also jumped year by year with consumer awareness. May increase. Here, in the rice mill which manufactures these non-washed rice, it was necessary to process in advance and wash | clean the tomato soup of the rice after washing | cleaning discharged | emitted naturally in a non-washing rice manufacturing process. In other words, in this rice broth, many nutrients abundantly contained in rice bran ingredients are dispersed and mixed in water to eutrophicate various BOD (organic matter), nitrogen, phosphorus and other rivers. Is included. For this reason, the release of rice broth as it is to rivers, etc., may cause sludge generation and mass production of red tides in the seas of downstream areas, etc. due to eutrophication. For this reason, in these rice mills, a process of removing BOD and the like by filtration treatment is performed by passing rice broth between porous filter materials and adsorbents before release.

  The above prior art has been publicly implemented, and the applicant has not particularly known a document describing such prior art at the time of filing this application.

  However, it has been known that the efficiency and performance of centrifugation in the above-described centrifugal separator is generally proportional to the square of a rotating body that rotates at high speed. In other words, in order to obtain a centrifugal performance capable of processing the processing liquid (suspension) with higher workability and efficiency, it is necessary to inevitably increase the rotational speed of the rotating body. . As a result, the developer of the centrifugal separator has improved the performance of the rotating mechanism for rotating the rotating body at high speed. That is, the rotation driving motor for applying a rotational force to the rotating body has been increased in size and the rotation mechanism portion has been improved by increasing the number of rotations. However, an increase in the size of the centrifugal separator itself, an increase in weight, and energy consumption such as electric power may increase due to an increase in the size of the motor and an improvement in the rotation mechanism for high speed rotation. Furthermore, it is necessary to take measures against vibration and noise accompanying the increase in the size of the motor, and to reduce a great load on the rotating body and the rotating mechanism section that rotate at high speed. For this reason, problems such as an increase in manufacturing costs, an increase in maintenance costs, and an increase in failure rate due to an increase in loads related to rotating bodies have occurred.

  Furthermore, the centrifugal separator has processed a suspension in which a plurality of different components to be processed are suspended using the difference in specific gravity of each component. Therefore, when the specific gravity difference between each component is small like the above-mentioned rice broth, the treatment by the centrifugal separator is not suitable. Therefore, in such a case, it has been necessary to perform a filtration treatment using the filter material described above. However, in this filtration treatment, when the filtration treatment time is continued, the porous portion of the filter material is clogged with rice bran components, and the filtration performance may be significantly reduced. As a result, the cost for replacement work and replacement of the filter material is required. Furthermore, compared to the centrifugal separator, these filtration methods have a processing capacity per unit time that is overwhelmingly lower than that of the centrifugal separator. It was sought after.

  Therefore, in view of the above circumstances, the present invention can efficiently centrifuge a suspension having a small specific gravity difference between components without imposing a great load on a rotating mechanism such as a motor. An object of the present invention is to provide a centrifugal separator.

  In order to solve the above-mentioned problem, the centrifugal separator of the present invention includes a “rotating body having a substantially bowl shape with an opening facing downward, a rotating shaft coupled to the rotating body, A rotating mechanism that rotates the rotating body according to the rotating shaft and a suspension liquid feeding means that pumps a suspension in which a plurality of components having different specific gravity are suspended are connected, and the suspension is suspended in the inner space of the rotating body. A suspension supply pipe for guiding the liquid, and a discharge port provided in a part of the suspension supply pipe, and discharging the suspension to the inner wall surface of the rotating body rotating from the discharge port A suspension discharge section that is disposed, and an intake port that is disposed in a low specific gravity region of the inner space in which the low specific gravity component of the suspension centrifuged by the rotating rotating body stays and takes in the low specific gravity component A low specific gravity component take-in part, and a low specific gravity component take-in part, A low specific gravity component recovery unit that selectively collects the low specific gravity component, and a recovery pipe that guides the low specific gravity component from the internal space to the outside of the rotating body through the opening. An intake position that is connected to a component recovery unit and is capable of displacing the intake position of the intake port of the low specific gravity component intake portion disposed in the low specific gravity region with respect to the inner wall surface of the rotating body It mainly comprises a displacement mechanism section.

  Here, the rotating body having a substantially bowl shape is generally formed of a metal material and can be exemplified by a cone shape, a truncated cone shape, or a mortar shape. And it has a wide-diameter opening part, and has an internal space (internal space) that can accommodate liquid, gas, etc. inside, and is formed so as to expand from the opening in the outer peripheral direction. Some have. The centrifuge of the present invention is arranged in a state where the opening of the rotating body is directed downward, that is, with the opening facing the installation floor surface of the centrifuge, and the connected rotation. Can rotate at high speed according to the axis. Here, the rotation speed (or the number of rotations) of the rotating body can be appropriately set according to the properties of the suspension to be treated, etc., and the separation efficiency due to the applied centrifugal force. Some of them can generate a centrifugal force of about 6000 G on the inner wall surface of the rotating body by rotating at a rotational speed of 5500 rpm.

  Further, the rotating mechanism connected to the rotating body has a configuration other than the rotating shaft, for example, a bearing that pivotally supports the rotating shaft along a substantially vertical direction, and transmits the rotational force to the supported rotating shaft. And a rotation drive motor for transmitting a rotational force to the rotation shaft through the rotation transmission unit and rotating the rotating body at a high speed. In addition, the main structure of these rotation mechanism parts can apply the well-known rotation mechanism technique utilized in the existing centrifugal separator or the apparatus which has other various rotation mechanisms.

  The low specific gravity component recovery unit is for selectively recovering the low specific gravity component separated by utilizing the centrifugal force generated by the rotation of the rotating body, and is disposed on the inner peripheral side of the inner space of the rotating body. A low specific gravity component intake portion having an intake port opened in the region of the low specific gravity region formed by staying in communication with the low specific gravity component intake portion and guiding the low specific gravity component to the outside of the rotating body. And a recovery pipe for the main purpose. Note that the shape of the intake portion is an opening shape in which the edge portion is greatly deflected and expanded so as to face the rotation direction of the rotating body in order to facilitate collection of the low specific gravity component in the low specific gravity region. It is possible to

  Furthermore, the take-in position displacement mechanism part is for displacing the take-in position of the low specific gravity component take-in part described above in the inner space of the rotating body. It is connected to the installed hydraulic cylinder, air cylinder, or drive means such as a torsion mechanism by a motor, and a telescopic cylinder shaft such as a hydraulic cylinder, and the arm angle between the cylinder shaft changes according to the expansion and contraction. It is composed of a link arm, a displacement transmission shaft for connecting the other end of the link arm and a part of the low specific gravity component recovery unit described above, and transmitting a change in arm angle to the low specific gravity component recovery unit. Things can be mentioned.

  Therefore, according to the centrifugal separator of the present invention, the suspension to be processed is discharged from the discharge port of the suspension discharge unit to the inner wall surface of the rotating body. At this time, the rotating body connected to the rotating mechanism unit rotates at a high speed (for example, 5500 rpm) according to the rotation axis. Thereby, when the discharged suspension reaches the inner wall surface of the rotating body, a strong centrifugal force (for example, 6000 G) is applied by contacting the inner wall surface. As a result, the suspension receives a force of scattering toward the outer peripheral direction of the rotating body by the action of centrifugal force. At this time, a force directed toward the outer periphery of the rotating body acts particularly on the high specific gravity component mainly comprising a solid phase component constituting the suspension. However, since the inner wall surface of the rotating body exists in the scattering direction, the scattering is hindered, and the high specific gravity component adheres to and accumulates on the inner wall surface of the rotating body. On the other hand, the low specific gravity component contained in the suspension does not act as strongly toward the outer peripheral direction as the high specific gravity component, and after separating from the high specific gravity component, it exists on the inner peripheral side of the inner space of the rotating body. At this position, a low specific gravity region constituted by the low specific gravity component is formed. Thus, by discharging the suspension onto the inner wall surface of the rotating body that rotates at high speed, a plurality of layers or regions (suspensions of the suspension) having different specific gravity are formed on the inner peripheral side of the rotating body and the vicinity of the inner wall surface of the rotating body. In the case of a two-component system, two layers or regions) are formed. At this time, by increasing the discharge time of the suspension, the thickness of the high specific gravity component deposited layer deposited on the inner wall surface of the rotating body gradually increases.

  In the low specific gravity region composed of the low specific gravity component, a low specific gravity component take-in portion of the low specific gravity component recovery portion is inserted upward from an opening provided below the rotating body. Thereby, a low specific gravity component can be taken in from the internal space of the rotating body rotated at high speed via the intake port, and further, the low specific gravity component can be guided from the internal space of the rotating body to the outside by the recovery pipe. At this time, the take-in position of the take-in port of the low specific gravity component take-in part can be arbitrarily set by the take-in displacement mechanism part. Thereby, the take-in position is changed according to the properties and the component ratio of the suspension to be processed, and the low specific gravity component can be selectively recovered according to the low specific gravity region to be formed. For example, if there is a large difference in specific gravity between the low specific gravity component and the high specific gravity component, the intake port is set at a position that is greatly separated from the inner wall surface in the direction of the rotation axis, and the cleanliness level in which the high specific gravity component is completely separated. If the specific gravity difference between each component is small, or if the specific gravity difference between each component is small, install the intake port at a position close to the inner wall surface of the rotating body, and the low specific gravity immediately after centrifugation Ingredients can be recovered. Thereby, it becomes possible to improve the recovery efficiency of a low specific gravity component. Further, by changing the take-in position in a state where the rotating body is rotated, it is possible to cope with a case where the properties of the suspension change during the centrifugation process.

  Further, since it can be recovered by the low specific gravity component recovery unit inserted in the inner space of the rotating body, compared with the conventional device that recovered the low specific gravity component through the discharge port provided on the upper surface of the rotating body, the above-mentioned It is less necessary to increase the number of rotations of the rotating body than when collecting through the discharge port. That is, in order to collect the low specific gravity component from the discharge port, it is necessary to move the low specific gravity component upward as the rotating body rotates, and when the difference in specific gravity is small, the rotational speed is increased. Otherwise, this recovery could not be performed. However, the low specific gravity component take-in portion provided in the inner space of the rotating body eliminates the need to increase the rotational speed so much that it does not apply an excessive load to the rotating body, the motor of the rotating mechanism, etc. It will not lead to ups.

  Further, the centrifugal separator according to the present invention has, in addition to the above-described configuration, “having a scraper end portion that at least partially matches the shape of the inner wall surface of the rotating body, and the inner wall surface by centrifugal separation using the rotating body. A scraper capable of scraping off the high specific gravity component of the suspension deposited on the scraper, a scraper support portion for supporting the scraper in the inner space, and an end portion of the scraper are brought close to the inner wall surface to scrape the high specific gravity component. And a scraper peeling mechanism portion having a scraper displacement portion that is displaced between a peeling position to be peeled off from the inner wall surface and a separated position separated from the inner wall surface, wherein the take-up position displacement mechanism portion is the scraper In conjunction with the displacement portion, when the scraper end portion is in the peeling position, the low specific gravity component take-in portion of the low specific gravity component recovery portion is out of the low specific gravity region. Is position, when the scraper end resides in the separated position, the may be low density the components taking part interlocking displacement mechanism for displacing the low density regions within the region "and further comprising.

  Therefore, according to the centrifugal separator of the present invention, the take-in position in the inner space of the take-in part of the low specific gravity component collecting part can be displaced in conjunction with the displacement of the scraper in the range of the peeling position and the separated position. it can. These interlocking displacement mechanisms can be achieved by using a well-known drive transmission mechanism such as a link arm or gear, but the most simplified one is the scraper peeling mechanism and the low specific gravity. The thing which connected the collection | recovery part and formed integrally is illustrated. Thereby, the operation | movement by the displacement part of the scraper conventionally provided in the centrifugal separator can be made to correspond with the displacement operation | movement by the taking-in position displacement mechanism part.

  Here, in the processing by the normal centrifugal separation action, first, the rotating body is rotated at a high speed, and then the suspension is discharged onto the inner wall surface of the rotating body. At this time, since the scraper does not directly relate to the suspension discharge and the centrifugal separation action, the scraper is greatly swung from the inner wall surface of the rotating body to the inner peripheral side so as not to interfere with the discharge process and the centrifugal separation process. In many cases, the scraper end is located at a separated position. And when it exists in this separation position, the taking-in part of the low specific gravity component collection | recovery part is set so that it may be located in the area | region of a low specific gravity area | region. Thereby, simultaneously with the centrifugation process by rotation of a rotary body, the low specific gravity component immediately after isolation | separation can be collect | recovered in a taking-in part. In addition, as described above, the take-in position can be arbitrarily displaced in the suspension to be processed.

  Thereby, the high specific gravity component centrifuged from the suspension is deposited on the inner wall surface of the rotating body. After that, while the rotation of the rotating body is stopped once, the scraper interlocking displacement mechanism is further operated, the scraper end of the scraper is brought close to the inner wall surface, and the accumulated high specific gravity component is scraped off from the inner wall surface. Displace to. Then, the rotating body is rotated again. In the case of such rotation, since it is not necessary to cause the action of centrifugation, it is not necessary to rotate at a high speed as before, and a low-speed rotation is sufficient. Furthermore, a new motor for low-speed rotation may be provided for such low-speed rotation.

  At this time, the rotating body does not rotate at a high speed and the suspension is not discharged from the suspension discharge section, so that a low specific gravity region due to a low specific gravity component is not formed in the inner space. . Therefore, the low specific gravity component recovery unit does not fulfill its function. Therefore, the rotating body is moved to the inner peripheral side (near the shaft center) so as to interlock with the displacement of the scraper and not to inhibit the scraping and peeling of the high specific gravity component from the inner wall surface. Thereby, the low specific gravity component collection | recovery part which exhibits the function at the time of high speed rotation of a rotary body, its intake part, and the scraper peeling mechanism part and scraper which function most at the time of a peeling process can be cooperated and displaced. In particular, the low specific gravity component recovery unit and the scraper peeling mechanism unit are integrally formed as described above, thereby simplifying the configuration inserted into the internal space of the rotating body, and showing these configurations shown in the internal space. It can be kept small.

  Furthermore, in addition to the above-described configuration, the centrifugal separator according to the present invention “the suspension discharge unit is formed integrally with at least one of the low specific gravity component recovery unit and the scraper peeling mechanism unit” It doesn't matter.

  Therefore, according to the centrifugal separator of the present invention, the suspension discharge part is formed integrally with at least one of the low specific gravity component recovery part and the scraper peeling mechanism part, so that each in the inner space of the rotating body. This configuration can be accommodated in a more compact manner. In particular, by integrating the three configurations of the suspension discharge unit, the low specific gravity component recovery unit, and the scraper peeling mechanism unit, it is possible to further reduce the space of the configuration that occupies the internal space of the rotating body. .

  As an effect of the present invention, the centrifugal separator can centrifuge the suspension into a high specific gravity component and a low specific gravity component by using a centrifugal force generated by a rotating body that rotates at high speed. And a low specific gravity component can be selectively collect | recovered from the intake part of the low specific gravity component collection | recovery part which was distribute | arranged to the internal space of a rotary body and was provided in the low specific gravity area | region. Furthermore, the take-in position in the internal space of the take-in part can be arbitrarily set by the take-in position displacement mechanism part. Thereby, it can be adjusted to an appropriate take-in position according to the properties of the suspension to be treated and the component ratio of each component, so that the high specific gravity component is not mixed with the low specific gravity component to be recovered. Good recovery can be performed. In addition, the low specific gravity component can be extracted downward by the liquid phase take-in portion, and the low specific gravity component immediately after being centrifuged in the inner space of the rotating body can be recovered. As a result, even a suspension having a small specific gravity difference between components can be efficiently recovered without rapidly increasing the number of rotations of the rotating body. Therefore, an excessive load is not applied to the motor for rotation.

  Hereinafter, a centrifugal separator 1 according to an embodiment of the present invention will be described in detail with reference to FIGS. 1 to 7. Here, FIG. 1 is a schematic cross-sectional view showing a schematic configuration of the centrifugal separator 1 of the present embodiment, FIG. 2 is a schematic plan view showing a schematic configuration of the centrifugal separator 1, and FIG. FIG. 4 is a perspective view showing a configuration of the rotating body 2 and the composite unit 3, and FIG. 5 is a perspective view showing a state in which the composite unit 3 is attached to the rotating body 2. FIG. 6 is an explanatory view showing the scraper 19 at the separation position LP, and FIG. 7 is an explanatory view showing the scraper 19 at the peeling position SP.

  Here, in the centrifugal separator 1 of the present embodiment, the suspension L to be processed is exemplified for processing “rice soup” discharged from a rice mill that produces non-washed rice. In addition, two components, a solid phase component 6 composed of a solid material mainly composed of rice bran component, and a liquid phase component 7 composed of a liquid material composed mainly of water used during washing are suspended in the rice broth. The specific gravity difference between the solid phase component 6 and the liquid phase component 7 is not so large. Here, the solid phase component 6 corresponds to the high specific gravity component in the present invention, and the liquid phase component 7 corresponds to the low specific gravity component in the present invention.

  As shown mainly in FIGS. 1 to 5, the centrifugal separator 1 of the present embodiment constitutes a main outer shell shape of the centrifugal separator 1, and includes a rotary body accommodating space 4 that can accommodate and contain the rotary body 2. In the basic housing 5 having a substantially L-shaped cross section when viewed from the front (see FIG. 1), and the lower shaft of the rotating shaft 8 in the rotating body housing space 4 of the basic housing 5. A bowl-shaped rotating body 2 that is suspended and supported from the end portion 9a and has the opening 10 facing downward, and the lower shaft end of the rotating body 2 is shown in the top view of the rotating body 2a in FIG. A rotating mechanism 8 for rotating the rotating body 2 at a high speed by the action of the rotary drive motor 11 in the rotating body accommodating space 4; Part of the inner space 13 is inserted from below the opening 10, and the suspension L is atomized and sprayed on the inner wall surface 14 of the rotating body 2. Formed in the internal space 13 and the scraper peeling mechanism 15 for scraping and discharging the deposited layer 6a made of the solid phase component 6 deposited on the inner wall surface 14 by centrifugal action. A composite unit 3 formed by integrating a configuration having three functions of a liquid phase recovery unit 18 that recovers the liquid phase component 7 from the liquid phase region 17 including the low specific gravity liquid phase component 7; It is connected to a part, and the respective positions (scraper position 21 and intake position 22) in the internal space 13 of the scraper 19 of the scraper peeling mechanism section 16 and the liquid phase intake section 20 of the liquid phase recovery section 18 are relatively linked. And a solid-phase component of the deposited layer 6 a that is provided below the rotating body 2 so as to face the opening 10 and scraped from the inner wall surface 14 by the scraper peeling mechanism 16. A solid phase recovery part 24 for recovering the liquid, a lid part 25 for opening and closing the recovery port 24a of the solid phase recovery part 24, and a lid part 25 connected to the lid part 25 according to the processing operation of the centrifuge 1 A lid opening / closing control mechanism unit 26 for controlling the opening / closing of the rotating unit 25, and a low-speed rotating motor 27 for rotating the rotating body 2 at a low speed when the scraper 19 peels off the deposited layer 6a. A clutch that switches and transmits the rotation of one of the second rotation mechanism unit 28 connected to the shaft 8, the rotation drive motor 11 of the rotation mechanism unit 12, and the low-speed rotation motor 27 of the second rotation mechanism unit 28 to the rotation shaft 8. The mechanism part 29 is comprised mainly. In actual use, an upper cover (not shown) covering the rotation mechanism unit 12 and the second rotation mechanism unit 28 is covered from above, and the operator can visually recognize such a configuration during normal operation. Absent.

  More specifically, the rotating body 2 used in the centrifugal separator 1 of the present embodiment has an opening 10 below, and the outer circumferential direction obliquely upward from the opening 10 (the left-right direction in FIG. 1). A frustoconical shape having an inclined wall portion 31 formed so that the side wall portion 30 is expanded toward the opening diameter, and having a maximum outer diameter portion swelled on both sides with respect to the opening diameter of the opening portion 10. It is composed. Moreover, it forms from the terminal of the inclined wall part 31 with the vertical wall part 32 bent in the substantially perpendicular direction with respect to the installation floor surface (refer FIG.1 and FIG.4 etc.). Furthermore, it has the bending part 33 bent in the substantially horizontal direction from the end of the vertical wall part 32 to the inner peripheral side of the rotary body 2, and the rotary body upper surface part 2a is formed of the bent part 33 concerned. Further, the rotating body upper surface portion 2 a is connected to the lower shaft end portion 9 a of the rotating shaft 8 of the rotating mechanism portion 12. As a result, the rotating body 2 can rotate at a high speed in the rotating body housing space 4 of the housed basic casing 5 with the rotating shaft 8 as an axis and the opening 10 facing downward. Here, in FIG.4 and FIG.5, the rotary body 2 has shown the state which cut | disconnected upper part vicinity in order to simplify illustration.

  On the other hand, the rotation mechanism unit 12 is provided in the vicinity of the rotating shaft 8 connected to the rotating body 2 and the lower shaft end portion 9a and the upper shaft end portion 9b of the rotating shaft as a basic configuration. A lower bearing portion 35a and an upper bearing portion 35b that rotatably support the rotating shaft 8 along a substantially vertical direction by a bearing 34, a pulley 36 installed on an upper shaft end portion 9b of the rotating shaft 8, and a rotating body A rotary drive motor 11 that generates a rotational force for rotating the motor 2, a transmission belt 37 that connects between the motor side pulley 38 and the pulley 36 installed on the motor shaft of the rotary drive motor 11, the rotary shaft 8, The rotary shaft housing 39 is provided on the upper surface of the basic housing 5 so as to cover the bearing portion 35a and the pulley 36. The clutch mechanism 29 described above is connected to the upper shaft end 9 b of the rotating shaft 8 of the rotating mechanism 12. Further, the clutch mechanism portion 29 has a second rotation mechanism portion 28 configured to have a low-speed rotation motor 27 for rotating the rotating body 2 at a low speed, above the rotation shaft housing portion 39. Is provided.

  Furthermore, as described above, the centrifugal separator 1 of the present embodiment includes the composite unit 3 in which the three configurations of the suspension discharge unit 15, the scraper peeling mechanism unit 16, and the liquid phase recovery unit 18 are integrated. ing. Here, in detail about each structure, the suspension discharge part 15 is provided in the exterior of the basic housing | casing part 5 of the centrifuge 1, and the suspension L used as the object of the centrifugation process is stored beforehand. A suspension storage tank (not shown) and a liquid feed pump (not shown) for pumping the suspension L to the inner space 13 of the rotating body 2. A suspension supply pipe 41 partially inserted from below the opening 10 and a part of the inserted suspension supply pipe 41 are opened so as to face the inner wall surface 14 of the rotating body 2, And a discharge port 42 for spraying the suspension L in a mist toward the inner wall surface 14. Here, the suspension supply pipe 41 is formed by connecting together tubular members respectively formed of a material to be a two-type saw. That is, from the liquid feed pump to the position below the opening 10 of the rotator 2, a flexible formed from a resin-made flexible pipe so as to be freely deformable corresponding to the displacement movement of the composite unit 3 described later. On the other hand, the part inserted into the inner space 13 of the rotating body 2 from the connection part through the opening 10 is constituted by a metal pipe 41b made of a highly rigid metal material that does not easily deform. ing. The portion inserted into the inner space 13 of the rotator 2 is supported in a substantially vertical direction with the axis direction of the rotating shaft 8 being aligned. Furthermore, the pipe upper end 43 of the inserted metal pipe 41 b is set in the vicinity of the bent portion of the inclined wall portion 31 and the vertical wall portion 32 of the rotating body 2. Further, the discharge port 42 provided in the metal tube 41 b is also formed in an oval shape with a length from a position slightly above the opening 10 to a position slightly below the tube upper end 43. Therefore, when the suspension L discharged from the suspension discharge unit 15 is discharged in a substantially horizontal direction, it comes into contact with the inner wall surface 14 of the inclined wall portion 31 of the rotating body 2 and rotates at such a location. It will be affected by centrifugal force.

  On the other hand, the scraper peeling mechanism portion 16 in the composite unit 3 of the present embodiment is a scraper formed so as to substantially match the inner wall shape of the inner wall surface 14 formed by the inclined wall portion 31 and the hanging wall portion 32 of the rotating body 2. A scraper 19 having an end 44 and made of a plate-like member for scraping off the solid phase component 6; and a scraper support 45 for accommodating and supporting the scraper 19 in the inner space 13 of the rotating body 2. It is configured. Here, in the centrifugal separator 1 of the present embodiment, the scraper 19 and the scraper support portion 45 are formed by bending a single plate-like member near the center and further cutting the scraper end portion 44 at an acute angle. It has been done. Note that the scraper 19 (particularly, the scraper end portion 44) may come into contact with the inner wall surface 14 of the rotating body 2 due to a peeling operation of the solid phase component 6 to be described later, and may be worn. Therefore, the scraper support part 45 and the scraper 19 can be formed to be separable from each other, and the scraper 19 can be attached to and detached from the scraper support part 45.

  The scraper 19 and the scraper support portion 45 are formed so as to substantially coincide with the height of the inner space 13 of the rotating body 2. And the lower part of the scraper support part 45 and a part of metal pipe 41b of the suspension discharge part 15 mentioned above are being fixed by welding. Thereby, the scraper peeling mechanism part 16 and the suspension discharge part 15 are neglected integrally. In addition, the scraper displacement part which displaces the scraper 19 in the inner space 13 of the rotary body 2 has the function of the interlocking displacement mechanism part 23 mentioned later, and detailed description is abbreviate | omitted here.

  In addition, the composite unit 3 is formed by further integrating the liquid phase recovery unit 18 with the above configuration. Here, the liquid phase recovery unit 18 is for selectively recovering the liquid phase component 7 separated from the suspension L by the centrifugal separation action, together with the scraper peeling mechanism unit 16 and the suspension discharge unit 15. And formed in a state of being accommodated in the inner space 13 of the rotating body 2 (see FIGS. 4 and 5). More specifically, the liquid phase recovery unit 18 is installed in the region of the liquid phase region 17 formed by the separation of the separated liquid phase component 7 and the inner space 13 of the rotating body 2. The uppermost position, in other words, the liquid phase intake portion 20 that is disposed almost directly below the upper surface portion 2a of the rotating body and has an intake port 46 that opens to the liquid phase region 17, and the liquid phase intake portion 20 is suspended. A recovery tube that is formed as described above and that guides the liquid phase component 7 taken in from the intake port 46 downward and guides the liquid phase component 7 that has passed through the opening 10 toward the outside of the centrifugal separator 1. 47. Similar to the suspension supply pipe 41 described above, the recovery pipe 47 is formed by connecting tubular members respectively formed of two different materials. That is, the metal tube 47a made of a metal material led out from the opening 10 of the rotator 2 to the rotator housing space 4 and the metal tube 47a in the rotator housing space 4 are collected and collected. The liquid phase component 7 is constituted by a flexible pipe that can be easily deformed for guiding the liquid phase component 7 to the outside of the centrifugal separator 1, and is constituted by a flexible pipe 47b. Here, the metal pipe 47 a described above is supported along the substantially vertical direction in the inner space 13 of the rotating body 2, similarly to the metal pipe 41 b of the suspension supply pipe 41. Further, the liquid phase intake unit 20 has an intake port 46 in the rotational direction of the rotating body 2 so that the liquid phase component 7 in the liquid phase region 17 formed by staying in the inner space 13 can be easily collected. It is formed in the shape of a bird cage so that it opens greatly. And it forms so that a part of metal pipe 47a of the collection pipe 47 and one surface of the scraper support part 45 may contact | abut. Here, the liquid phase recovery unit 18 corresponds to the low specific gravity component recovery unit in the present invention, the liquid phase region 17 corresponds to the low specific gravity region in the present invention, and the liquid phase intake unit 20 corresponds to the low specific gravity component in the present invention. It corresponds to the part.

  Furthermore, as shown in FIGS. 2 to 5, the interlocking displacement mechanism 23 in the centrifugal separator 1 of the present embodiment is connected and supported on a plate connected to the metal tube 47 a of the liquid phase recovery unit 18 of the composite unit 3. A unit displacement shaft 50 having a portion 48, a lower end portion 49 a connected to the connection support portion 48, and an upper end portion 49 b protruding so as to penetrate the upper surface of the basic housing portion 5, and the unit displacement shaft 50 A displacement bearing portion 51 that is pivotally supported along a substantially vertical direction, a link arm 53 that is coupled to the upper end portion 49a of the unit displacement shaft 50 via a shaft coupling portion 52, and a connection portion 54 of the link arm 53 that is rotatable. And a hydraulic cylinder 56 having the other end connected to the basic housing part 5 via the housing shaft part 56a. In FIGS. 1 and 3, the structure of the interlocking displacement mechanism 23 is appropriately omitted in order to simplify the description. As a result, according to the expansion and contraction of the cylinder shaft 55 of the hydraulic cylinder 56 (corresponding to the arrow B direction in FIG. 2), the hydraulic cylinder 56 and the link arm 53 connected between the housing shaft portion 56a and the unit displacement shaft 50 are connected. The included angle α changes, and the unit displacement shaft 50 connected to the shaft connecting portion 52 rotates while being supported by the displacement bearing portion 51 (corresponding to the arrow C direction in FIG. 2). As a result, the composite unit 3 connected by the lower end portion 49a and the connection support portion 48 is displaced (details will be described later). At this time, the suspension supply pipe 41 and the recovery pipe 47 are configured by resin-made flexible pipes 41a and 47b that can be easily deformed by stress. Can respond.

  Furthermore, the centrifuge 1 of this embodiment is a lid that controls the movement of the lid portion 25 for opening and closing the recovery port 24a of the solid phase recovery portion 24 provided below the opening portion 10 of the rotator 2. A part opening / closing control mechanism part 26 is provided. That is, a lid support arm 57 having one end connected to the upper surface of the lid portion 25, a lid displacement shaft 58 connected to the lid support arm 57, and a lid displacement bearing portion 59 that pivotally supports the lid displacement shaft 58. It is mainly composed. Here, a small motor (not shown) is used as power for opening and closing the lid portion 25. In addition, the structure of this cover part 25 and the cover part opening-and-closing control mechanism part 26 can apply the existing technique currently installed with respect to the conventional centrifuge 1, and detailed description is here. Omitted. Further, in FIG. 1, the lid portion 25 with the recovery port 24 a closed is illustrated by a solid line, and the lid portion 25 is displaced in the rotating body accommodating space 4 to open the recovery port 24 a of the solid phase recovery unit 24. This is indicated by a broken line.

  In addition, the centrifugal separator 1 of the present embodiment has, as another configuration, a suspension L that penetrates a part of the casing side wall 5 a of the basic casing 5 and is discharged to the inner wall surface 14 of the rotating body 2. Among these, the drain liquid outlet for discharging the drain liquid 60 that has fallen from the opening 10 to the space bottom surface portion 4a of the rotating body accommodating space 4 without being recovered as the solid phase component 6 and the liquid phase component 7 61 is formed. Here, as shown in FIG. 1, the space bottom surface portion 4 a is formed to be inclined obliquely downward toward the drain liquid discharge port 61 in order to facilitate the discharge of the drain liquid 60. Further, the suspension L is provided so as to be opposed to each other in the substantially horizontal direction from the vicinity of the upper end of the basic housing portion 5 of the machine, and the suspension L is provided at a connecting portion between the rotating body upper surface portion 2a of the rotating body 2 and the rotating shaft 8 or the like. Alternatively, an intrusion prevention piece 62 that prevents the drain liquid 60 and the like from entering is provided.

  Next, an example of the centrifugation process of the suspension L using the centrifugal separator 1 of this embodiment will be described mainly based on FIGS. 6 and 7. Here, first, the interlocking displacement mechanism 23 connected to the composite unit 3 is operated, and the liquid phase take-in part 20 of the composite unit 3 is moved to the take-in position 22 where the liquid phase component 7 in the liquid phase region 17 can be taken. Set so that it comes out. Accordingly, the scraper 19 (and the scraper end portion 44) of the scraper peeling mechanism unit 16 is displaced to a separation position LP that is separated from the inner wall surface 14 of the rotating body 2 (see FIG. 6). At this time, the cylinder shaft 55 has a minimum length. Furthermore, the lid opening / closing control mechanism 26 is controlled so that the recovery port 24 a of the solid phase recovery unit 24 provided below the opening 10 of the rotating body 2 is closed by the lid 25. As a result, the suspension L, the drain liquid 60 and the like discharged from the suspension discharge unit 15 and existing in the rotating body accommodation space 4 may enter the solid phase recovery unit 24 through the recovery port 24a. Absent. And the rotation drive motor 11 of the rotation mechanism part 12 is operated, and a motor shaft (not shown) is rotated at high speed. At this time, the clutch mechanism 29 described above is switched so as to transmit the rotation of the rotary drive motor 11 to the rotary shaft 8 via the transmission belt 37.

  As a result, the rotation of the rotary drive motor 11 is transmitted to the rotary shaft 8 pivotally supported by the bearing portions 35a and 35b, and the rotary body 2 accommodated in the rotary body accommodating space 4 rotates at a high speed according to the rotary shaft 8. (Rotation operation). At this time, the rotating body 2 is rotated with the opening 10 facing downward. Furthermore, as described above, since a part of the composite unit 3 inserted from the opening 10 has the liquid phase take-in unit 20 and the scraper 19 disposed at a preset position, the high speed of the rotating body is high. It does not inhibit rotation.

  Then, the suspension L (rice soup) fed from the outside through the suspension supply pipe 41 is supplied to the inner wall surface 14 of the rotating rotator 2. Then, the suspension L in the form of a mist is discharged from the discharge port 42 provided in a part of the suspension supply pipe 41 toward the inner wall surface 14 of the rotating body 2 rotating at high speed (discharge operation). ). At this time, since the discharge port 42 is disposed at a position facing the inclined wall portion 31, the discharged suspension L first reaches the inner wall surface 14 of the inclined wall portion 31.

  Here, the suspension L in contact with the inclined wall portion 31 is subjected to a force in the rotational direction by the rotating body 2 and tends to scatter in the rotational outer peripheral direction (corresponding to the left-right direction in FIG. 1). Thus, the suspension L is deposited such that the solid phase component 6 corresponding to the high specific gravity component is pressed against the inner wall surface 14 of the rotating body 2 due to the difference in specific gravity constituting the component. On the other hand, the liquid phase component 7 corresponding to the low specific gravity component after being separated from the solid phase component 6 receives a large centrifugal force unlike the solid phase component 6 and is not pressed against the inner wall surface 14. The liquid phase region 17 is formed by staying on the inner peripheral side (axial center side of the rotating shaft 8) of the deposited layer 6a where 6 is deposited (see FIG. 6). Then, by continuing the rotation operation and the discharge operation, the deposition layer 6a made of the solid phase component 6 gradually increases its thickness, while the liquid phase component 7 in the liquid phase region 17 is contained in the rotating body 2. It stays in the space 13 and gradually moves toward the inner space 13. Note that the suspension L that has not been centrifuged and the component that has been separated into the liquid phase component 7 but cannot move upward due to gravity fall downward according to its own weight.

  In the upper position of the inner space 13 of the rotator 2, the liquid phase take-in part 20 of the liquid phase collection part 18 is provided with a take-in port 46 that is largely opened in the liquid phase region 17. Therefore, the liquid phase component 7 is taken in by the take-in port 46 in the take-in position 22. Here, the rotation direction of the rotating body 2 is set to be counterclockwise in FIGS. 2, 6, and 7. After that, it is guided downward through a recovery pipe 47 (metal pipe 47 a) connected to and connected to the liquid phase take-in part 20, and is guided to the outside of the basic casing part 5 through the opening 10 of the rotating body 2. Thereby, the rice bran component is removed from the suspension L, and the liquid phase component 7 mainly composed of water is selectively recovered (recovery operation).

  In addition, the taking-in position 22 of this liquid phase taking-in part 20 can be suitably changed according to the property of the suspension L to process. In this case, by adjusting the expansion and contraction of the hydraulic cylinder 56 of the interlocking displacement mechanism 23, the position of the rotating body 2 in the inner space 13 is increased, particularly, the position close to and spaced from the inner wall surface 14 of the rotating body 2. Can be displaced between positions. For example, when the content ratio of the solid phase component 6 shown in the suspension L is large, the deposition amount of the solid phase component 6 deposited on the inner wall surface 14 becomes very large. Therefore, the liquid phase component 7 located in the vicinity of the layer interface of the deposition layer 6a is recovered by bringing the capture position 22 of the liquid phase capture unit 20 closer to the deposited layer 6a of the deposited solid phase component 6. It becomes easy. On the other hand, when the content of the liquid phase component 7 in the suspension L is large, the liquid phase component 7 staying on the inner periphery side is displaced by displacing the liquid phase intake 20 from the inner wall surface 14. Only the liquid phase component 7 with less impurities can be recovered from the inside.

  Here, the suspension L that has been discharged from the discharge port 42 but has not reached the inner wall surface 14 of the rotator 2 or the suspension L that has reached the inner wall surface 14 cannot be sufficiently centrifuged and cannot be centrifuged. The suspension L that has not been separated and the liquid phase component 7 that has been centrifuged down by its own weight and did not reach the intake 46 of the liquid phase take-in portion 20 are contained in the rotating body. It reaches the space bottom surface portion 4a of the space 4 by dropping. Then, it is guided to the drain liquid discharge port 61 by the inclined space bottom surface portion 4 a and discharged as the drain liquid 60.

  Thereafter, by continuing the rotation operation and the discharge operation, the deposited layer 6a made of the solid phase component 6 deposited on the inner wall surface 14 of the rotating body 2 gradually increases in thickness. Thereafter, when a preset separation processing time has elapsed, the rotation of the rotating body 2 by the rotation drive motor 11 and the discharge of the suspension L are stopped (stop operation). As a result, the liquid phase region 17 is not formed in the inner space 13 of the rotating body 2. Therefore, a part of the liquid phase component 7 existing in the inner space 13 at the time of stopping is taken into the liquid phase taking-in part 20, and the rest falls downward according to gravity, passes through the opening 10, and reaches the space bottom face part 4 a. And is discharged as drain liquid 60. On the other hand, the deposited layer 6 a on which the solid phase component 6 is deposited remains on the inner wall surface 14 of the rotating body 2. The deposited layer 6a and the solid phase component 6 are often formed of a material having a relatively high viscosity, and the liquid phase component 7 is partially included. Therefore, the adhesive (adhesive) force with respect to the inner wall surface 14 is strong, and it hardly falls depending on its own weight.

  Here, the interlocking displacement mechanism 23 is operated to displace the scraper end portion 44 of the scraper 19 of the composite unit 3 to the peeling position SP for peeling the deposited layer 6a close to the inner wall surface 14 of the rotating body 2. . At this time, the liquid phase take-in portion 20 is displaced near the center of the rotating body 2 with the displacement of the scraper 19 (see FIG. 7). At this time, as shown in FIG. 7, the cylinder shaft 55 of the hydraulic cylinder 56 is extended to correspond to the displacement of the composite unit 3 (corresponding to a substantially lower side of the drawing in FIG. 7). As a result, the link arm 53 connected to the cylinder shaft 55 rotates about the unit displacement shaft 50, and the composite unit 3 moves accordingly (peeling position displacement operation).

  Further, the recovery port 24a of the solid phase recovery unit 24 provided below the rotating body 2 is opened, and the opening 10 and the recovery port 24a are opposed to each other. At this time, the lid opening / closing control mechanism 26 rotates the lid displacement shaft 58 and displaces the lid 25 attached to the lid support arm 57 to the open position (see the broken line in FIG. 1 and the arrow D in FIG. 2). (Lid displacement operation). Thereby, when the solid phase component 6 deposited on the rotating body 2 is discharged from the opening 10, the solid phase component 6 is recovered to the solid phase recovery unit 24 through the recovery port 24a.

  Further, the clutch mechanism 29 is switched to transmit the rotation of the low-speed rotating motor 27 of the second rotating mechanism 28 to the rotating shaft 8 (clutch switching operation). Thereafter, driving of the low-speed rotation motor 27 is started (low-speed rotation operation). As a result, the scraper end 44 of the scraper 19 comes close to the inner wall surface 14 and can be peeled off while scraping off the deposited layer 6a of the solid phase component 6 deposited on the inner wall surface 14 (see FIG. 7). Then, the solid phase component 6 that has been scraped and peeled off from the inner wall surface 14 falls downward and is recovered by the solid phase recovery unit 24 from the recovery port 24a that is opened so as to face the opening 10. Phase recovery operation).

  As described above, according to the centrifugal separator 1 of the present embodiment, the liquid phase component 7 of the suspension L to be processed is supplied by the liquid phase take-in unit 20 provided in the inner space 13 of the rotating body 2. Can be retrieved and collected. Furthermore, the centrifugal separator 1 of the present embodiment can appropriately change the take-in position 22 of the liquid-phase take-in part 20 in the inner space 13 of the rotating body 2. As a result, the liquid phase component 7 can be recovered at any take-in position 22 in accordance with the properties of the suspension L. Furthermore, even in the case of the suspension L where the specific gravity difference between the components is small, the liquid phase component 7 immediately after being centrifuged can be recovered in the internal space 13, so that it is compared with a conventional centrifugal separator. Recovery efficiency and accuracy can be improved. Therefore, it is possible to perform the centrifugal separation process on these suspensions L without increasing the number of rotations of the rotating body 2 so much as compared with the prior art. In particular, it can be said to be suitable for the suspension L such as the rice broth shown in the present embodiment.

  In addition, according to the centrifugal separator 1 of the present invention, the scraper peeling mechanism unit 16 for scraping and peeling the solid phase component 6 from the inner wall surface 14, the liquid phase collecting unit 18 for collecting the liquid phase component 7, The composite unit 3 formed integrally with the turbid liquid discharge unit 15 is accommodated in the inner space 13 of the rotating body 2. And the interlocking displacement mechanism part 23 which can perform the displacement of these composite units 3 interlockingly is provided. As a result, the scraper peeling mechanism unit 16 that does not perform its function during the centrifugal separation process and the liquid phase recovery unit 18 that does not perform its function during the solid phase recovery operation are integrated. Thereby, the structure which is inserted from the opening part 10 of the rotary body 2 and occupies a part of the inner space 13 can be compactly formed. Further, by using a common mechanism for displacing each, it is possible to avoid complication of the mechanism and further reduce the cost of the entire apparatus. Further, since the intake port 46 of the liquid phase intake unit 20 is installed above the discharge port 42 of the suspension discharge unit 15 in the inner space 13, the solid phase component 6 is separated and impurities are removed. Only the liquid phase component 7 with little mixture can be selectively recovered.

  The present invention has been described with reference to preferred embodiments. However, the present invention is not limited to these embodiments, and various modifications can be made without departing from the spirit of the present invention as described below. And design changes are possible.

  That is, in the centrifugal separator 1 of the present embodiment, the suspension L to be processed is shown using rice soup, but is not limited thereto, and can be processed as a conventional centrifugal target. Of course, it is possible to use a simple suspension. Furthermore, the shape of each component of the composite unit 3 and the shape of the rotating body 2 are not particularly limited, and can be appropriately changed according to the shape of each component. Therefore, the effect of the centrifugal separator 1 of the present invention can be enjoyed by slightly improving the existing centrifugal separator.

It is a schematic cross section which shows schematic structure of the centrifuge of this embodiment. It is a model top view which shows schematic structure of a centrifuge. It is an AA schematic cross section which shows schematic structure of a centrifuge. It is a perspective view which shows the structure of a rotary body and a composite unit. It is a perspective view which shows the state which attached the composite unit to the rotary body. It is explanatory drawing which shows the scraper in a separation position. It is explanatory drawing which shows the scraper in a peeling position.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Centrifugal apparatus 2 Rotating body 3 Composite unit (Suspension discharge part, scraper peeling mechanism part, liquid phase collection | recovery part)
5 Basic housing 6 Solid phase component (high specific gravity component)
6a Deposited layer (high specific gravity component)
7 Liquid phase components (low specific gravity components)
DESCRIPTION OF SYMBOLS 8 Rotating shaft 10 Opening part 12 Rotating mechanism part 13 Inner space 14 Inner wall surface 15 Suspension discharge part 16 Scraper peeling mechanism part 17 Liquid phase area | region 18 Liquid phase collection | recovery part (low specific gravity component collection | recovery part)
19 Scraper 20 Liquid phase take-in part 21 Scraper position 22 Take-in position 23 Interlocking displacement mechanism part (take-in position displacement mechanism part, scraper displacement part)
41 Suspension supply pipe 42 Discharge port 44 Scraper end 45 Scraper support 46 Intake port 47 Recovery pipe L Suspension LP Separation position SP Separation position

Claims (3)

A rotating body having a substantially bowl shape with the opening facing downward;
A rotating mechanism having a rotating shaft coupled to the rotating body and rotating the rotating body according to the rotating shaft;
A suspension supply pipe connected to suspension liquid feeding means for pumping a suspension in which a plurality of components having different specific gravities are suspended, and leading the suspension to the inner space of the rotating body, and the suspension A suspension discharge part having a discharge port provided in a part of the supply pipe, and discharging the suspension to the inner wall surface of the rotating body rotating from the discharge port;
A low specific gravity component take-in portion that is arranged in a low specific gravity region of the inner space where the low specific gravity component of the suspension centrifuged by the rotating body stays and has an intake port for taking in the low specific gravity component And a recovery pipe that is formed by hanging from the low specific gravity component take-in part, and guides the taken-in low specific gravity component from the internal space to the outside of the rotating body through the opening, A low specific gravity component recovery section for selectively recovering specific gravity components;
Connected to the low specific gravity component recovery unit, the intake position of the intake port of the low specific gravity component intake unit arranged in the low specific gravity region can be displaced relative to the inner wall surface of the rotating body A centrifuge having a take-in position displacement mechanism. It has a scraper end portion that at least partially matches the shape of the inner wall surface of the rotating body, and can scrape off the high specific gravity component of the suspension deposited on the inner wall surface by centrifugation by the rotating body. A scraper, a scraper support portion for supporting the scraper in the inner space, and an end portion of the scraper are brought close to the inner wall surface, and a separating position for scraping off the high specific gravity component from the inner wall surface and separating from the inner wall surface. And a scraper peeling mechanism having a scraper displacement portion that is displaced between the separated positions.
The take-in position displacement mechanism is
In conjunction with the scraper displacement portion, when the scraper end portion is at the peeling position, the low specific gravity component collection portion of the low specific gravity component recovery portion is displaced outside the low specific gravity region, and the scraper end portion 2. The centrifugal separator according to claim 1, further comprising an interlocking displacement mechanism that displaces the low specific gravity component take-in portion into the low specific gravity region when the second specific gravity component is in the separated position. The suspension discharge part is
The centrifugal separator according to claim 2, wherein the centrifugal separator is formed integrally with at least one of the low specific gravity component recovery unit and the scraper peeling mechanism unit.

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