JP4708468B2 - Vertical vane pump - Google Patents

Description

  The present invention relates to a vertical vane pump for transferring a transfer object.

  Conventionally, a vertical vane pump for transferring a ham or sausage material, okara, red bean paste, butter or the like having a high viscosity and low fluidity has been used. Is shown in In the vertical vane pump shown in Patent Document 1, the rotor rotates around a vertical rotation axis. A plurality of vanes are supported on the upper portion of the rotor so as to be orthogonal to the rotation axis and slidable in the orthogonal direction. The rotor and the vane are rotatably accommodated and held in the casing.

  The casing is provided with a cover body that covers the upper surface of the internal space, and the cover body includes an inflow port that communicates with the internal space. An outlet port communicating with the internal space is formed in a side portion of the casing.

  At the upper part of the cover body, there is provided a transported material supply unit comprising a cone-shaped hopper or the like whose lower part leads to the inlet. The internal space in the casing is partitioned into a plurality of flow paths by vanes, and the cross-sectional areas of the plurality of flow paths change with the rotation of the vanes, so that the transported material in the transported material supply unit flows from the inflow port to the respective flow paths. And then transferred to the outlet.

  Such a vertical vane pump is widely used for transferring the above-mentioned viscous transfer material because the apparatus is compact and has excellent transferability.

Utility Model Registration No. 2502924

  In the vertical vane pump, the transported material put into the hopper adheres to the inner surface of the hopper, which causes a bridge and does not flow smoothly into the pump. In particular, ham and sausage materials, or transported materials containing bubbles such as okara are likely to cause a bridge near the inlet in the hopper. Therefore, in a production factory or the like that handles these transferred items, an operator is forced to open the upper portion of the hopper and push the bridge portion with an appropriate jig. Such work is very troublesome and requires man-hours, which is a major factor in reducing production efficiency. In view of this, a stirring member is provided in the hopper, and the stirring member is driven by a motor to constantly stir the transferred material in the hopper to prevent the occurrence of a bridge. However, in this case, since it is necessary to newly install a motor and to incorporate the drive control sequence, there is a problem that the manufacturing of the apparatus becomes large and complicated, and the cost is high.

  An object of the present invention is to provide a vertical vane pump that has a simple structure but effectively prevents the occurrence of bridging of a transferred material and is a highly viscous transferred material that can be smoothly transferred. is there.

A vertical vane pump according to the present invention includes a rotor that rotates around a vertical rotation axis,
A plurality of vanes supported on the upper portion of the rotor so as to be orthogonal to the rotation axis and slidable in the orthogonal direction;
A casing having an inner space in which the rotor and the rotor are rotatably accommodated, and an outlet for discharging a fluid transfer material formed on a side portion;
A cover body covering an upper portion of the casing and having an inflow port communicating with the internal space;
In the vertical vane pump, which is installed at the upper part of the cover body, and the lower part includes a transfer material supply unit for supplying a moving object to the inflow port,
A scraping member is provided on the upper end of the rotor via a shaft,
The scraping member protrudes from the cover body and faces the inner surface of the transferred material supply unit, and is driven to rotate in close proximity to the inner surface of the transferred material supply unit in conjunction with the rotation of the rotor and the shaft .
The scraping member includes a mounting base that is supported by being fitted in a fitting hole formed in the shaft, and a scraping piece fixed to the mounting base.
The mounting base is fitted and held in a state in which extraction is prevented from the fitting hole by the inner peripheral edge of the through hole formed in the cover body,
The scraping piece is a vertical vane pump characterized in that it is formed so as to extend from the through hole and face the inner surface of the transported material supply unit .

  According to the present invention, the transported material stored in the transported material supply unit flows into the internal space of the casing through the inlet formed in the cover body from the lower part of the transported material supply unit. The transferred material flowing into the internal space is sequentially pushed out to the outlet formed in the side portion of the casing by the rotation of the vane accompanying the rotation of the rotor, and flows out of the pump. Since each vane is supported on the upper portion of the rotor so as to be orthogonal to the rotation axis and slidable in the orthogonal direction, the vane is slid and moved with the internal shape of the internal space as the rotor rotates. As a result, a plurality of pump chambers partitioned by vanes are formed in the internal space, and the transfer of the transferred material to the outlet is accurately performed through the pump chambers. A scraping member attached to the upper end portion of the rotor via a shaft faces the inner surface of the transported material supply unit, and the scraping member interlocks with the rotation of the rotor and the shaft and Since it is configured to rotate in close proximity to the inner surface, the transferred material that is about to adhere to the inner surface of the transferred material supply portion is scraped by the action of the scraping member, and the bridge of the transferred material in the transferred material supply portion. Generation | occurrence | production is prevented and the inflow to the said internal space from the outflow of the transferred material into the said internal space, and an outflow port is made smooth.

Further , since the scraping member is fitted and supported in the fitting hole formed in the shaft with the mounting base, the rotation close to the inner surface of the transported material supply unit as described above in conjunction with the rotation of the shaft Is made. And since the attachment base is fitted and held so that it cannot be removed from the fitting hole by the inner peripheral edge of the through hole formed in the cover body, there is a concern that the scraping member may come off during the rotating operation. Absent. Further, since the scraping members are attached to the shaft in such a fitting relationship, they can be easily manufactured and assembled, and the scraping members can be appropriately replaced.

  Further, the present invention is characterized in that the fitting hole has an elongated hole shape along the radial direction of the shaft, and the mounting base portion has a shape substantially matching the elongated hole shape.

  According to the present invention, the fitting hole has a long hole shape along the radial direction of the shaft, and the mounting base has a shape that substantially matches the long hole shape. Acts on the scraping member, and the rotation transmission to the scraping member is efficiently performed.

  Further, the present invention is characterized in that a deaeration port communicating with the internal space is formed in a side portion of the casing.

  According to the present invention, by connecting the suction means to the deaeration port, air can be forcibly sucked from the internal space even when the rotor is rotating. Therefore, when air is mixed in the transfer object to be transferred, air can be sequentially extracted from the transfer object, so that the transfer object can be stably transferred and the transfer weight of the transfer object can be stabilized.

  Further, the present invention is characterized in that the cover body is detachably attached to the casing.

  According to the present invention, maintenance such as vanes in the internal space can be easily performed by removing the cover body.

  In the invention, it is preferable that the transported article supply unit is composed of a cone-shaped hopper that is detachably installed on the upper part of the cover body.

  According to the present invention, since the transported material supply part is composed of a hopper, the transported material can be temporarily stored, and since it is composed of a cone-shaped hopper, the stored transported material can be transferred to the lower inlet. Made smooth. Furthermore, since the hopper is detachably installed on the upper part of the cover body, the hopper can be easily cleaned, and if a configuration in which the cover body is detachable is added to this, maintenance such as replacement of the scraping member is possible. Can also be easily performed.

  According to the present invention, a scraping member attached to the upper end portion of the rotor via a shaft approaches the inner surface of the transferred material supply unit, and the scraping member is used for rotation of the rotor and the shaft. Since it is configured to rotate in close proximity to the inner surface of the transported material supply unit, the transported material to be attached to the inner surface of the transported material supply unit is scraped by the action of the scraping member, and the transported material supply The occurrence of bridging of the transferred material in the section is prevented, and the flow of the transferred material into the internal space and the inflow from the outlet to the internal space are smoothly performed. In addition, since the scraping member is configured to rotate in conjunction with the rotation of the rotor, a dedicated drive means for rotating the scraping member is not required, and the scraping member is driven and controlled. There is no need to incorporate a unique sequence into the apparatus, and there is no concern that the apparatus cost will increase.

  Hereinafter, the best mode for carrying out the present invention will be described. However, the dimensions, materials, shapes, relative positions, etc. of the members and parts described in the following embodiments are not intended to limit the scope of the present invention only to those unless otherwise specified, It is just an example. Further, the drawings according to the present embodiment are created by ignoring the dimensional ratio in order to facilitate understanding of the features of the present invention.

  FIG. 1 is a cross-sectional view showing a configuration of a vertical vane pump 1 according to an embodiment of the present invention. FIG. 2 is a plan view of the vertical vane pump 1 shown in FIG. 1 is a cross-sectional view taken along the section line II in FIG. FIG. 3 is a plan view of the cover body 2 in the same type vane pump 1, FIG. 4 is a sectional view of the main part of the same type vane pump 1 as seen from the side, and FIG. FIG. 6 is an exploded perspective view showing the relationship among the rotor 8, the casing 14 and the vane 20 in the vane pump 1, and FIG. 6 is an exploded perspective view showing the relationship between the shaft 27, the scraping member 36 and the cover body 2 in the same type vane pump 1. .

  As shown in FIGS. 1 to 6, the motor 4 is installed in the base portion 3, and the shaft rotation of the horizontal output shaft of the motor 4 is decelerated by the speed reducer 5 and is incorporated in the speed reducer 5 (not shown). A driving force is transmitted to the rotating shaft 7 rotating around the vertical rotating axis 6 by a drive transmission mechanism such as a bevel gear. The rotary shaft 7 is fitted in a shaft mounting hole 10 formed in the rotor shaft portion 9 which is the lower half portion of the rotor 8 and is mutually prevented by a key (not shown). At the same time, it can be rotated around the rotation axis 6 (see the direction of arrow a in FIG. 2). The upper half of the rotor 8 is a rotor body 11, and the rotor body 11 is formed with three vane grooves 12 that are orthogonal to the rotation axis 6 and intersect each other at an angle of 60 °. All of these three vane grooves 12 are open at the upper end of the rotor 8 (see FIG. 5).

  The number of vane grooves 12 and vanes 20 is not limited to three and three, but may be two and two, or four and four.

  Further, a bolt hole extending along the rotation axis 6 is penetrated at the bottom of the central portion where the vane grooves 12 intersect, and the bolt is inserted into the bolt hole and screwed into the rotation shaft 7 to rotate with the rotor 8. The shaft 7 may be coupled.

  A base 13 is constructed on the base 3, and a casing 14 is fixedly installed on the base 13 via bolts 15. The casing 14 includes a lower rotor holding portion 16 and an upper pump chamber portion 17. The rotor holding portion 16 rotatably supports the rotor shaft portion 9 in the rotor 8 via bushes 18 and 19 made of Teflon (registered trademark) or the like, and the pump chamber portion 17 is fitted into the vane groove 12. An internal space 21 of the vane 20 is formed. The rotor holding portion 16 and the pump chamber portion 17 are integrated by a fastening means such as a bolt (not shown), and an O-ring 22 is interposed between the fastening surfaces to achieve a seal between the fastening surfaces.

  The casing 14 is supported by the rotor holding portion 16 so as to protrude downward from a through hole 23 formed in the gantry 13, and is fixed to the gantry 13 by the bolt 15. In this state, the rotor shaft portion 9 of the rotor 8 protrudes downward from the rotor holding portion 16 and is coupled to the rotary shaft 7 protruding in the vertical direction from the speed reducer 5 supported by the intermediate shelf portion 24 of the gantry 13. A spacer 25 is fitted around the protruding base portion of the rotary shaft 7 from the speed reducer 5, and the spacer 25 adjusts the distance between the lower end of the rotor shaft portion 9 and the upper surface of the speed reducer 5.

  As a support mechanism of the rotor shaft portion 9 by the rotor holding portion 16, although not shown, it may be configured by a combination of a stuffing box, a gland packing, and a gland holding member instead of the bush 18.

  A circular recess 26 concentric with the rotor 8 is formed on the upper end surface of the rotor 8, and a shaft 27 is fitted into the recess 26 and fixed by three hexagon socket bolts 28 (see FIG. 2 and FIG. 2). (See FIG. 6). At the upper end of the rotor 8, as described above, three vane grooves 12 that are centered on the rotational axis 6 and intersect each other at an angle of 60 ° are opened, and the vane groove 12 includes three vanes 20 (20A). , 20B, 20C) are slidably fitted along the longitudinal direction of each vane groove 12. The three vanes 20 include a reverse concave vane 20A, an H-shaped vane 20B, and a concave vane 20C, which are fitted in the vane groove 12 in a combined state.

  The shaft 27 is fitted and fixed in the recess 26 in a state where the three vanes 20 are fitted in the vane groove 12, thereby preventing the vane 20 from being pulled out upward. A groove 29 corresponding to the vane groove 12 and having the same width as the vane groove 12 is formed on the lower surface of the shaft 27, and the upper edge portion of the vane 20 fitted in the vane groove 12 is received by the groove 29. .

  As shown in FIG. 2, the internal space 21 of the vane formed in the pump chamber 17 in the casing 14 has four compartments S1, S2, S3, S4 that are partitioned every 90 ° with the rotation axis 6 as the center. Consists of. In the first partition region S1, the corresponding inner wall surface 21A of the internal space 21 is a ¼ arc surface having a center of curvature at the center of the rotation axis 6 and a radius of curvature larger than that of the rotor body 11, and the rotor body 11 A fan-shaped airspace (flow path) having a constant width is formed along the circumferential direction between the outer circumferential surface and the outer circumferential surface.

  In the third compartment S3 opposite to the first compartment S1, the corresponding inner wall surface 21C of the internal space 21 has the center of the rotation axis 6 as the center of curvature and is close to the outer peripheral surface of the rotor body 11. A slight arc having a constant width is formed between the inner wall surface 21 </ b> C and the outer peripheral surface of the rotor body 11.

  The second partition area S2 is adjacent to the downstream side in the rotation direction a of the rotor 8 in the first partition area S1, and is located between the first partition area S1 and the third partition area S3. In the second partition area S2, the corresponding inner wall surface 21B is a curved surface continuous from the inner wall surface 21A corresponding to the first partition area S1 to the inner wall surface 21C corresponding to the third partition area S3. An air space (flow path) between the inner wall surface 21 </ b> B and the outer peripheral surface of the rotor body 11 is formed to be gradually narrowed toward the downstream side in the rotation direction a.

  The fourth compartment S4 is adjacent to the downstream side in the rotation direction a of the rotor 8 in the third compartment S3, and is located between the third compartment S3 and the first compartment S1. In the fourth partition area S4, the corresponding inner wall surface 21D is a curved surface continuous from the inner wall surface 21C corresponding to the third partition area S3 to the inner wall surface 21A corresponding to the first partition area S1, An air space (flow path) between the inner wall surface 21 </ b> D and the outer peripheral surface of the rotor body 11 is formed to gradually widen toward the downstream side in the rotation direction a.

  The inner surface shape of the inner space 21 constituted by the four inner wall surfaces 21 </ b> A to 21 </ b> D is formed such that the distance between the opposing surfaces centering on the rotation axis 6 is constant. Therefore, the lengths of the three vanes 20 fitted into the three vane grooves 12 are all formed equal to this distance, and when the rotor 8 rotates while being held in the vane grooves 12, each vane 20 is rotated. While rotating in the vane groove 12, the both ends of the vane groove 12 always rotate in the inner space 21 while being in sliding contact with any of the inner wall surfaces 21A to 21D.

  The upper portion of the inner wall surface 21D is further hollowed out in the centrifugal direction, and the planar shape of the punched portion 21E is formed so as to match the shape of an inlet 46 provided in the cover body 2 described later. Further, an outlet 30 that communicates with the outer side of the casing 14 is formed on the inner wall surface 21B of the inner space 21 corresponding to the second partition area S2, and the outer side of the casing 14 that corresponds to the outlet 30 is formed on the inner wall 21B. Is attached with a joint portion 31 connected to a fluid transport pipe (not shown).

  Furthermore, a deaeration port 33 communicating with the outer side of the casing 14 is formed in the inner wall surface 21C of the internal space 21 corresponding to the third partition area S3, and the outer side of the casing 14 corresponding to the deaeration port 33 is formed. A joint portion 34 connected to a suction pipe (not shown) is attached to the portion.

  The shaft 27 is provided with a long hole-like (oval-shaped) fitting hole 35 extending in the radial direction about the rotation axis 6 on the upper surface thereof. The fitting base 35 of the scraping member 36 is detachably fitted into the fitting hole 35. The scraping member 36 shown in FIG. 1 to FIG. 6 includes the mounting base 37, a rod portion 38 fixed to the center of the mounting base 37, and a plate shape, a columnar shape or the like fixed to the tip of the rod portion 38. The rod portion 38 is bent so as to be close to the inner surface of a hopper 48 described later.

  The mounting base 37 has an elliptical planar shape that can be fitted and held in the fitting hole 35. The longitudinal length of the mounting base 37 is the length of the fitting hole 35 as shown in FIG. In comparison, the size is such that a clearance c of about 0.5 mm is formed at both ends. As will be described later, when the scraping member 36 is rotating, the mounting base 37 is fitted into the fitting hole 35 when it comes into contact with the scraping piece 39 on the solid matter of the transported material formed on the inner surface of the hopper 48. This is because the clearance c can move in the longitudinal direction. Thereby, the scraping piece 39 can get over the solid material, and the impact caused by the contact can be reduced.

  The cover body 2 is a square plate-like body that matches the shape of the upper end surface of the casing 14, and bolt insertion holes 40 are formed at the four corners thereof. Screw holes 41 are formed at the four corners of the upper end surface of the casing 14, and embedded bolts (not shown) are screwed into the screw holes 41. By inserting the embedded bolt into the bolt insertion hole 40 of the cover body 2 and screwing the eye nut 42 (see FIG. 1) from the upper surface side of the cover body 2, the cover body 2 is fastened and fixed to the upper end surface of the casing 14. The

  An O-ring 141 is attached to the peripheral portion of the inner space 21 on the upper end surface of the casing 14 while being accommodated in the circumferential groove, whereby the inner space 21 of the casing 14 is hermetically covered by the cover body 2. . The cover body 2 is provided with a short cylindrical portion 43 covering the shaft 27 installed so as to protrude from the upper end surface of the rotor 8 in a raised shape at the center thereof, and a through hole 44 is formed in the upper bottom portion of the short cylindrical portion 43. Has been. The diameter of the through hole 44 is smaller than the length of the mounting base portion 37 of the scraping member 36 and is sized to allow the rod portion 38 and the scraping piece 39 of the scraping member 36 to be inserted.

  Therefore, when the mounting base portion 37 is fitted into the fitting hole 35, the rod portion 38 and the scraping piece 39 are inserted into the through hole 44, and the cover body 2 is fastened and fixed to the upper end surface of the casing 14, the inner peripheral edge of the through hole 44. The attachment base 37 is fitted and held by the portion 45 so that it cannot be removed from the fitting hole 35.

  A shape that substantially matches the planar shape of the punched portion 21 </ b> E in the peripheral portion of the short cylindrical portion 43 of the cover body 2 and corresponding to the fourth partition region S <b> 4 in the internal space 21 of the casing 14. Inlet 46 is formed. Further, a connecting cylinder 47 concentrically large in diameter with the short cylindrical portion 43 is fixed on the upper surface of the cover body 2 and outside the short cylindrical portion 43 (in FIG. 6, for convenience, it is represented by a two-dot chain line). ). The connection cylinder 47 is used to connect a cone-shaped hopper 48 as a transfer object supply unit, and a lower end of the cone-shaped hopper 48 is clamped by a clamp ring 50 with an O-ring 49 interposed at the upper end thereof. The parts are coupled and connected. As a result, the lower portion of the cone-shaped hopper 48 communicates with the inflow port 46, and further communicates with the inner space 21 of the vane through the inflow port 46.

  As shown in FIG. 4, a link arm 52 connected to a hinge portion 51 attached to the outer side portion of the casing 14 is fixed to the outer surface portion of the cone-shaped hopper 48. Therefore, it is possible to release the clamp ring 50 from the upper end of the cover body 2 by releasing the clamp and rotating the hopper 48 around the hinge portion 51 as a fulcrum. A handle 53 is attached to the outer surface of the hopper 48 and is used when the hopper 48 is attached or detached. Further, a baffle plate piece 54 facing the inside of the hopper 48 is attached to the outer surface portion of the hopper 48.

  This baffle plate piece 54 synergizes with the rotating stirring action of the scraping member 36 to prevent the transported material in the hopper 48 from being agglomerated, or when the transported material to be put in is solid butter, etc. It functions to break down. The shape of the baffle plate piece 54 may be a rod shape, a plate shape, or other shapes, and may be a shape that faces the center of the hopper 48. A transport system (not shown) for transported material is connected to the upper end portion of the hopper 48, and the transported material is appropriately put into the hopper 48.

  FIG. 4 shows a state where the hopper 48, the cover body 2 and the scraping member 36 are removed. That is, when the clamp of the clamp ring 50 is released, the hopper 48 can be tilted as shown in the figure while being supported by the link arm 52 with the hinge 51 as a fulcrum. Thereby, the upper surface of the cover body 2 is opened. Next, the cover body 2 can be removed by loosening the eye nut 42 and releasing the screwing. The eye nut 42 can be easily loosened by inserting an appropriate tool into the ring portion and rotating it. Since the scraping member 36 has only its mounting base 37 and is fitted into the fitting hole 35 of the shaft 27, it can be easily removed. Thus, by making each part detachable, maintenance such as cleaning of the inside of the hopper 48 and the cover body 2 can be easily performed. Moreover, the operation | work which replaces the scraping member 36 with the thing suitable for the property of a conveyed product can also be implemented easily.

  Next, the operation of the vertical vane pump 1 configured as described above will be described. In the vertical vane pump 1 assembled as shown in FIG. 1, when the motor 4 is turned on and the rotating shaft 7 rotates at a predetermined deceleration, the rotor 8 rotates around the rotating axis 6. The transferred material thrown into the hopper 48 flows down toward the lower inlet 46. As the rotor 8 rotates, the scraping member 36 also rotates, and the transferred material in the hopper 48 is subjected to this stirring action, and the transferred material to be attached to the inner surface of the hopper 48 is scraped by the scraping piece 39, The smooth flow of the transferred material is promoted without causing a bridge.

  With the rotation of the rotor 8, the rotor body 11 rotates around the rotation axis 6 in the direction of arrow a in the vane internal space 21 in the casing 14. In the rotor body 11, the three vanes 20 </ b> A, 20 </ b> B, and 20 </ b> C are slidably held in the three vane grooves 12 orthogonal to the rotation axis 6. Each of the vanes 20A, 20B, and 20C rotates while sliding along the vane groove 12 so as to follow the inner surface shape of the vane groove 12.

  Since each vane 20A, 20B, 20C rotates while both ends thereof are in contact with any of the four inner wall surfaces 21A-21D of the internal space 21, the outer periphery of the rotor body 11 of each vane 20A, 20B, 20C. Portions protruding from the surface form a plurality of pump chambers with the inner wall surface of the internal space 21. Along with the movement of the pump chamber along the rotational direction a, the transferred material flowing into the pump chambers from the hopper 48 is transferred toward the outlet 30, and the outlet 30, the joint portion 31, and the fluid transport pipe (not shown). After that, it is transported toward the next transferred material processing step (not shown). That is, the transported material that has flowed down from the hopper 48 flows into the fourth compartment S <b> 4 in the internal space 21 through the inlet 46. The transferred material that has flowed into the fourth partition area S4 is subjected to the rotating action of the vane 20 and is pushed to the first partition area S1. In the fourth compartment S4, the punched portion 21E is formed on the inner wall surface 21D of the internal space 21, so that the inflow of the transferred material is made smooth. Moreover, since the space | interval of inner wall surface 21D and the outer peripheral surface of the rotor main body 11 spreads along the rotation direction a from 4th division area S4 to 1st division area S1, transfer of a transported material becomes less resistance. .

  The transported material transferred to the first partition area S1 is transported toward the second partition area S2 by the rotating action of the vane 20, and the inner wall surface 21A of the internal space 21 and the rotor in the first partition area S1. Since the distance from the outer peripheral surface of the main body 11 is constant, this transfer is also performed smoothly. In the second partition area S2, the distance between the inner wall surface 21B of the internal space 21 and the outer peripheral surface of the rotor body 11 is gradually narrowed. Since the outlet 30 is formed, the outlet 30 is sequentially discharged from the outlet 30 via the joint portion 31. In the third partition area S3, only a slight gap is ensured between the inner wall surface 21C of the internal space 21 and the outer peripheral surface of the rotor body 11, and therefore the transferred material that has reached the second partition area S2 Then, it flows out of the casing 14 through the outlet 30 without reaching the third partition region S3.

  A deaeration port 33 is provided in the inner wall surface 21C of the internal space 21 in the third partition area S3. If a suction means (not shown) is connected to the joint 34, the internal space 21 is evacuated. And the transferred material is degassed. Therefore, the transfer of air-mixed material can be easily transferred, and the tightness of the transferred material becomes constant by degassing, thereby improving the quantitativeness. In addition, when the transported material is a viscous food material such as ham or sausage, it is possible to prevent the growth of bacteria by being deaerated, which helps to prevent the food using this material from being spoiled. Since the deaeration port 33 is opened in a narrow gap in the third partition region S3, the transferred material is not sucked into the deaeration port 33. The transferred material is supplied from the hopper 48 to the fourth compartment S4, and the above operation is repeated by the continuous rotation of the rotor 8, and the transferred material is sequentially discharged from the outlet 30.

  Each vane 20 is made of, for example, a synthetic resin also called food engineering plastic, and is slidably fitted into the vane groove 12. Moreover, inner wall surfaces 21A to 21D of the internal space 21 in the casing 14 are made of stainless steel.

  The scraping member 36 rotates around the rotation axis 6 with the rotation of the rotor 8 by fitting and holding the attachment base portion 37 having an oval shape in plan view in the fitting hole 35 of the shaft 27. By this rotation, the scraping piece 39 rotates in the state of being close to the inner surface of the hopper 48, and the rotation of the scraping piece 39 prevents the transfer material in the hopper 48 from adhering to the inner surface of the hopper 48, The generation of a bridge at the lower portion is suppressed, and a smooth inflow of the transferred material to the inlet 46 is achieved.

  Further, the scraping piece 39 also has a function of stirring the transported material in the hopper 48 by its rotation. Therefore, while the scraping member 36 stirs and mixes the different kinds of transported material into the hopper 48, the pump It can also be set as a specification to be transferred. By making the attachment base portion 37 into an oval shape as shown in the figure, transmission of rotational torque from the shaft 27 is effectively achieved. Each constituent member of the scraping member 36 is formed of stainless steel, but the attachment and integration of the attachment base portion 37 and the rod portion 38 is performed by welding. In this case, the attachment base 37 and the rod 38 can be screwed together and then welded together.

  FIG. 7A to FIG. 7D show a modified example of the scraping member 36. The scraping member 36 of FIG. 7A is composed of only the mounting base 37 and the bent rod portion 38, and the front side portion of the rod portion 38 is close to the inner surface of the hopper 48 and functions as a scraping piece. . The scraping member 36 in FIG. 7B includes an attachment base 37, a bifurcated rod portion 38, and a scraping piece 39 fixed to each tip of the rod portion 38. The rod portion 38 is not limited to a bifurcated shape, and may be formed in a trifurcated shape or a quadrangular shape, for example. The scraping member 36 shown in FIG. 7C includes an attachment base 37, a vertical columnar rod portion 38, and a screw blade-shaped scraping piece 39 fixed to the rod portion 38. In the example of FIGS. 7B and 7C, the stirring function is more effectively expressed in addition to the scraping function. The scraping member 36 of FIG. 7D has a spiral shape in which the rod portion 38 is bent along the cone shape of the inner surface of the hopper 48. These are appropriately selected and adopted according to the properties of the transfer object to be treated.

  FIG. 8 shows still another modified example of the scraping member 36. A rod portion 38 is fixed to an attachment base 37 similar to the above, and a scraping piece 39 is attached to the tip of the rod portion 38. It is supported so as to be rotatable around its axis. The scraping piece 39 is configured such that the impeller portion 39A and the roller portion 39B are integrated, and when the mounting base portion 37 rotates together with the shaft 27, the roller portion 39B comes into sliding contact with the inner surface of the hopper 48, and the hopper comes into contact with the sliding contact. Roll on the inner surface of 48. As the roller portion 39B rolls, the impeller portion 39A rotates in the vicinity of the inner surface of the hopper 48 while rotating about the axis of the rod portion 38. Due to the rotation accompanying the rotation, the scraping function of the transferred object is made more effective.

  9 (a) and 9 (b) show another embodiment of the cover body 2, and FIG. 9 (a) is a cross-sectional view taken along the same cutting plane line as FIG. FIG. 5B is a cross-sectional view taken along the same cutting plane line as FIG. In the case of the cover body 2 in the above embodiment, since the short cylindrical portion 43 covering the auxiliary roller 27 is formed in a raised shape, a recess is formed between the periphery and the connecting cylinder 47, and the transferred material depends on the property. There was a concern of stagnation in the recess. In the present embodiment, instead of the connection cylinder 47, a tapered funnel-shaped portion 55 extending from the upper surface of the short cylinder portion 43 to the connection end surface with the hopper 48 is formed except for a portion corresponding to the fluid inflow portion 46. By setting it as such a shape, the concern of the stagnation of the said transfer thing is wiped off. Since other configurations are the same as described above, common portions are denoted by the same reference numerals and description thereof is omitted.

  FIG. 10 shows that the transported material supply unit includes a fluid input chute 56. The charging chute includes a straight pipe portion 56A and a conical portion 56B connected to the upper end thereof, and the scraping piece 39 of the scraping member 36 is configured to rotate close to the inner surface of the straight pipe portion 56A. . With such a configuration, the transfer material is prevented from adhering to the inner surface of the straight pipe portion 56A in the same manner as described above, and the smooth transfer material flows into the inner space 21 without occurrence of a bridge. Although the cover body 2 is shown as the same as the embodiment shown in FIGS. 1 to 6, it is possible to apply the cover body 2 shown in FIG. 8 to this. Further, the shape of the fluid input chute 56 is not limited to that shown in the figure. For example, a straight pipe is appropriately bent in accordance with the layout configuration of the processing system to reach the upper end portion of the connection cylinder 47 of the cover body 2 to be connected. You may comprise so that it may connect to the cylinder 47. FIG. Since other configurations are the same as those in FIG. 1, common portions are denoted by the same reference numerals, and description thereof is omitted.

  The planar shape of the casing 14 and the cover body 2 is not limited to a square, and may be a rectangle or a circle. Moreover, although the planar shape of the fitting hole 35 of the shaft 27 and the attachment base portion 37 of the scraping member 36 is an ellipse, it may be a rectangle, an ellipse, or a circle.

It is sectional drawing which shows the structure of the vertical vane pump 1 which is one form of this invention. It is the top view which removed the cover body 2 in the vertical vane pump 1 of FIG. 1, and was seen from the top. It is a top view of the cover body 2 in the same saddle type vane pump 1. FIG. It is sectional drawing seen from the side of the state which decomposed | disassembled the principal part of the same saddle type vane pump. 2 is an exploded perspective view showing the relationship among a rotor 8, a casing 14 and a vane 20 in the same vane pump 1. FIG. 3 is an exploded perspective view showing a relationship among a shaft 27, a scraping member 36 and a cover body 2 in the same vane type vane pump 1. FIG. FIG. 7A to FIG. 7D are conceptual diagrams showing various modifications of the scraping member 36. It is a perspective view which shows another modification of the scraping member. Another embodiment of a cover body is shown, Fig.9 (a) is front sectional drawing, FIG.9 (b) is side sectional drawing. It is sectional drawing which shows the structure of the vertical vane pump 1 which is other embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Vertical vane pump 2 Cover body 6 Rotating axis 8 Rotor 14 Casing 20 Vane 21 Inner space of vane 27 Shaft 30, 46 Outlet 33 Deaeration port 35 Fitting hole 36 Scraping member 37 Mounting base 39 Scraping piece 44 Through-hole 45 Inner peripheral edge 48 Transported material supply section

Claims (5)

A rotor that rotates about a vertical axis of rotation;
A plurality of vanes supported on the upper portion of the rotor so as to be orthogonal to the rotation axis and slidable in the orthogonal direction;
A casing having an inner space in which the rotor and the rotor are rotatably accommodated, and an outlet for discharging a fluid transfer material formed on a side portion;
A cover body covering an upper portion of the casing and having an inflow port communicating with the internal space;
In the vertical vane pump, which is installed at the upper part of the cover body, and the lower part includes a transfer material supply unit for supplying a moving object to the inflow port,
A scraping member is provided on the upper end of the rotor via a shaft,
The scraping member protrudes from the cover body and faces the inner surface of the transported material supply unit, interlocked with the rotation of the rotor and the shaft, and is driven to rotate close to the inner surface of the transported material supply unit ,
The scraping member includes a mounting base that is supported by being fitted into a fitting hole formed in the shaft, and a scraping piece fixed to the mounting base.
The mounting base is fitted and held in a state in which extraction is prevented from the fitting hole by the inner peripheral edge of the through hole formed in the cover body,
The scissor- type vane pump is characterized in that the scraping piece is formed to extend from the through hole and face the inner surface of the transported material supply unit . Said fitting hole is a long hole shape along the radial direction of the shaft, vertical vane pump according to claim 1, wherein the mounting base portion has a shape that substantially matches the slot shape. 3. The vertical vane pump according to claim 1, wherein a deaeration port communicating with the internal space is formed in a side portion of the casing. The saddle type vane pump according to any one of claims 1 to 3 , wherein the cover body is detachably attached to the casing. The saddle-type vane pump according to any one of claims 1 to 4 , wherein the transported material supply unit includes a cone-shaped hopper that is detachably installed on an upper portion of the cover body.

Images