JP4448871B2 - Fixed amount filling equipment - Google Patents

Description

  The present invention relates to a quantitative filling device for filling a container with a predetermined amount of a material to be weighed, such as powder or granules.

  A fixed-quantity filling apparatus that fills a container with a predetermined amount of an object to be weighed, such as powder or granules, has already been put into practical use. For example, there are FNL-302CC and FNL-306CC manufactured by Daiwa Manufacturing Co., Ltd.

  FIG. 8 is a schematic configuration diagram schematically showing the inside of a conventional quantitative filling apparatus. As shown in FIG. 8, the conventional constant-quantity filling apparatus 500 includes an external housing 501 having a charging port 502 formed on the upper surface, a first hopper 510 disposed below the charging port 502, and a first hopper. A second hopper 520 disposed below 510, and a weight detector 530 that supports the second hopper 520 and detects a change in the weight of the second hopper 520.

  In the conventional quantitative filling device, a bearing portion for supporting the gate members of the first hopper 510 and the second hopper 520 and a joint portion for transmitting a driving force to the gate members are formed around the hopper body. For example, in FIG. 8, a pair of first bearing portions 511 and 512, two pairs of second bearing portions 521A and 522A (a second bearing portion located in the back in the drawing is not shown), a first joint portion 513 , A pair of second joint portions 523 and 524.

  In such a conventional configuration, dust rises with the movement of the object to be weighed, and the first bearing portions 511, 512, the second bearing portions 521A, 522A, the first joint portion 513, and the second joint portions 523, 524 In some cases, dust was caught in the friction surfaces. Wear of the friction surface is promoted by the biting of dust. That is, there is room for improvement in that dust enters the first bearing portions 511 and 512, the second bearing portions 521A and 522A, the first joint portion 513, and the second joint portions 523 and 524. In addition, there is room for improvement in that wear powder generated in the first bearing portions 511 and 512, the second bearing portions 521A and 522A, the first joint portion 513 and the second joint portions 523 and 524 is mixed into the object to be measured. there were.

On the other hand, Patent Document 1 discloses a technique for covering a bearing portion and a link mechanism (joint portion) of a hopper with a cover. Patent Document 2 discloses a technique for covering an opening / closing drive mechanism (joint portion) of an opening / closing lid (gate member) with a cover.
JP 2004-28805 A JP 2001-264153 A

  However, in the technique of Patent Document 2, a part of the joint part (opening / closing drive body 113) is exposed to the outside (paragraph [0065] in the same document), and thus a part of the friction surface is exposed to the outside.

  In the techniques of Patent Document 1 and Patent Document 2, wear powder generated on the friction surface of at least one of the bearing portion and the joint portion of the hopper is accumulated in the cover. And when removing a cover in the maintenance inspection work of the bearing part of a hopper, and a joint part, there existed a problem that the abrasion powder accumulated in the cover fell and mixed in to-be-measured object.

  Further, since the bearing portion and the joint portion of the hopper are configured in the same space as the hopper body, the dust generated in the hopper easily reaches the periphery of the cover. Further, depending on how the cover is attached, there is a problem that dust enters the cover and dust enters the bearings and joints of the hopper.

  The present invention has been made to solve the above-described problems, and can prevent wear powder from being mixed into an object to be weighed in maintenance inspection work for a bearing part and a joint part of a hopper. An object of the present invention is to provide a fixed-quantity filling device that can more reliably prevent the dust from entering the bearing portion and the joint portion of the hopper.

  In order to achieve the above object, a quantitative filling apparatus according to the present invention includes an external housing having a charging port formed on the upper surface, a first hopper that is positioned below the charging port and has a first gate member at the bottom. And a second hopper located below the first hopper and having a second gate member at the bottom, a first driving device for opening and closing the first gate member, and being fixed to the main body of the second hopper, A second driving device that opens and closes the second gate member; a weight detector that detects a change in weight of the second hopper; and a first gate shaft that is fixed to the first gate member and is connected to the first driving device. A second gate shaft fixed to the second gate member and connected to the second driving device, a support member connecting the weight detector and the body of the second hopper, and separated from the first gate member The first gate shaft can be rotated A quantitative filling device comprising: a first bearing portion to be supported; and a second bearing portion to rotatably support the second gate shaft away from the second gate member, the interior of the outer casing The space is further divided into a first space and a second space, and further includes a partition wall in which a plurality of through holes are formed, and the first hopper and the second hopper are disposed in the first space. In the second space, the first driving device, the second driving device, the weight detector, the first bearing portion, and the second bearing portion are disposed and formed in the partition wall. In each of the through holes, the first gate shaft, the second gate shaft, and the support member are configured to pass through in a non-contact state.

  According to this structure, the bearing part and joint part of a hopper are arrange | positioned in the space isolated from the 1st gate member and the 2nd gate member. Therefore, it is possible to prevent wear powder from entering the object to be weighed during maintenance and inspection work of the bearing part and joint part of the hopper, and to prevent the dust of the object to be weighed from entering the bearing part and joint part of the hopper. It can prevent more reliably.

  Further, in the above-described quantitative filling device, the partition wall has a ventilation portion for ventilating the first space and the second space, and the ventilation portion is a window-like hole formed in the partition wall. It may be formed by stretching a net.

  According to this structure, the pressure fluctuation accompanying the operation of the first hopper and the second hopper can be released.

  Moreover, in the above-described fixed-quantity filling device, the partition may be formed in a cylindrical shape so as to surround the first hopper and the second hopper.

  Moreover, in the above-described constant filling device, the partition wall may be divided into a plurality of wall members, and a boundary line between the wall members may be formed so as to pass through at least one of the through holes.

  According to this configuration, since the partition wall can be detached while the first gate shaft, the second gate shaft, and the arm member are attached, maintenance work of the quantitative filling device can be facilitated.

In the above-described quantitative filling device, the diaphragm further includes a diaphragm-like cover member that is disposed around the through-hole through which the support member passes and is formed so as to cover a gap with the support member. The space is further divided into a plurality of spaces, and the weight detector includes the first drive device, the second drive device, the first bearing portion, and the second bearing portion in the second space. May be arranged in another space.

  According to this configuration, it is possible to more completely prevent the object to be weighed from adhering to the weight detector.

  The quantitative filling device of the present invention can prevent mixing of wear powder into the object to be weighed in maintenance inspection work of the bearing part and joint part of the hopper, and the hopper bearing part and joint part of the dust of the object to be weighed. There is an effect that it is possible to more reliably prevent the intrusion into the interior of the.

  Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings.

(First embodiment)
FIG. 1 is a diagram schematically showing the internal structure of the constant-quantity filling apparatus according to the first embodiment of the present invention. FIG. 2 is a top view of the lower part of the constant-quantity filling device in the section taken along the line II-II in FIG. FIG. 3 is a top view of the upper portion of the quantitative filling device in the section taken along the line III-III in FIG. FIG. 4 is a plan view showing an installation state of the second partition wall in the section taken along line IV-IV in FIG. In FIG. 1, for convenience of explanation, the pair of second partition walls 71 and 72 are omitted.

  As shown in FIG. 1 to FIG. 3, the constant-quantity filling device of the present embodiment includes an external housing 1 having a charging port 2 formed on the upper surface, and a first hopper 10 fixed below the charging port 2. The second hopper 20 disposed below the first hopper 10 and the weight detector 30 for detecting a change in the weight of the second hopper 20 are provided. That is, in the constant-quantity filling apparatus of the present embodiment, the objects to be weighed from the insertion port 2 are stored in the first hopper 10, and the first hopper 10 supplies a predetermined amount of the objects to be weighed to the second hopper. The two hoppers 20 are configured to fill an object to be weighed in a lower container (not shown).

  Here, the first hopper 10 includes a cylindrical main body 19 that extends downward from the insertion port 2 formed on the upper surface of the outer casing 1, a first gate member 16 that opens and closes the bottom of the main body 19, and a first gate. A pair of first gate shafts 17A and 17B fixed to the member 16, a first bearing portion 12 that supports the first gate shaft 17A so as to be rotatable about the shaft, and a first bearing portion that supports the first gate shaft 17B so that the shaft can be rotated. One bearing portion 11, a connecting portion (joint portion) 13 attached to the extending end of the first gate shaft 17 </ b> A, and a first driving device 15 connected to the connecting portion 13.

  The first gate member 16 is configured to close the bottom of the main body 19. The first gate shafts 17A and 17B are fixed to the first gate member 16, and extend from both sides of the first gate member 16 on the same horizontal line. That is, the first gate member 16 is supported by the pair of first bearing portions 11 and 12 in a swingable manner with the first gate shafts 17A and 17B as the rotation shaft. And the rotational force of the 1st drive device 15 rocks the 1st gate member 16 via the connection part 13 and the 1st gate axis | shaft 17A, and opens and closes the bottom part of the 1st hopper 10. FIG.

  A pair of 1st bearing parts 11 and 12 are comprised with a bearing, and are respectively supported by the external housing 1 by the supporting members 11A and 12A.

  A known shaft coupling is used for the connecting portion 13.

  The first drive device 15 is composed of an electric motor such as a servo motor, and is supported on the external housing 1 by a support member 15A.

  The 1st drive device 15, the connection part 13, and the 1st bearing parts 11 and 12 comprise the 1st gate shaft support structure which drives and supports 1st gate shaft 17A, 17B.

  The second hopper 20 includes a rectangular cylindrical main body 29 positioned vertically below the main body 19 of the first hopper 10, a pair of second gate members 27, 28 that open and close the bottom of the main body 29, and a second gate member 27. , 28, a pair of second gate shafts 41, 42, a pair of second bearing portions 21A, 21B for supporting the second gate shaft 41 so as to be rotatable, and a second gate shaft 42 as a shaft. A pair of second bearing portions 22A and 22B that are rotatably supported, a second driving device 25 connected to the second gate shaft 41 by the second joint portion 23, and a second joint portion to the second gate shaft 42. And a second driving device 26 connected by 24.

  The second gate members 27 and 28 are rectangular plate-like members, respectively, and are arranged so that the bottom of the main body 29 is configured in a V-shaped valley shape.

  The second gate shafts 41 and 42 extend horizontally on both sides near the upper sides of the second gate members 27 and 28 and are fixed to the respective second gate members 27 and 28 by fixing members 41A, 41B, 42A and 42B. It is fixed. That is, the pair of second gate shafts 41 and 42 are arranged in parallel to each other. The pair of second gate members 27 and 28 are swingably supported with the second gate shafts 41 and 42 as rotational axes, respectively.

  The second bearing portions 21 </ b> A and 22 </ b> A are constituted by bearings and are supported by the main body 29 by arm members 51. The second bearing portions 21 </ b> B and 22 </ b> B are constituted by bearings and are supported by the main body 29 by arm members 52.

  The pair of arm members 51 and 52 are fixed so as to extend from both sides of the main body 29.

  The second drive devices 25 and 26 are constituted by linear drive actuators. The second driving device 25 is supported by the arm member 51 by the mooring member 25B. Further, as indicated by arrows in FIGS. 1 and 3, the tip of the drive shaft 25 </ b> A that reciprocates is connected to the second joint portion 23. The second drive device 26 is supported by the arm member 52 by the mooring member 26 </ b> B, and the distal end of the reciprocating drive shaft 26 </ b> A is connected to the second joint portion 24.

  The second joint portions 23 and 24 are configured by members having one end fixed to the second gate shafts 41 and 42 and the other end connected to the drive shafts 25A and 26A. With such a configuration, the second joint portions 23 and 24 can constitute a link mechanism that transmits the forward / backward movement of the drive shafts 25A and 26A as the rotational movement of the second gate shafts 41 and 42.

  With such a structure, the advancing / retreating driving force of the driving shafts 25A, 26A of the second driving devices 25, 26 is transmitted as the axial rotational force of the second gate shafts 41, 42 by the second joint portions 23, 24. That is, as indicated by an arrow in FIG. 1, the second hopper 20 is configured such that the second gate members 27 and 28 swing to open and close the bottom.

Further, four rod-like support members 33 are fixed to the main body 29 of the second hopper 20 so as to extend in the horizontal direction, and the extending end of the support member 33 is supported by a flat plate-like support member 32. . The support member 32 is supported by the weight detector 30. The weight device 30 is supported on the outer casing 1 by a support member 31.

The weight detection device 30 is a load cell using a strain gauge. That is, the weight change of the second hopper 20 is applied to the other end of the load cell via the support member 33 and the support member 32. Due to this weight change, the load cell is distorted, and the gravity change, that is, the weight of the object in the second hopper 20 can be detected by the distortion.

  In addition, the second gate shaft support structure in which the second drive devices 25 and 26, the second joint portions 23 and 24, and the second bearing portions 21A, 21B, 22A, and 22B drive and support the second gate shafts 41 and 42. Is configured. In the present embodiment, the second gate shaft support structure and the arm members 51 and 52 are arranged so that the weight ratio of the left and right of the main body 29 of the second hopper is equal when viewed from the weight detector 30. With this configuration, the moment force applied to the weight detector 30 can be reduced, so that a more accurate measurement value can be acquired more quickly.

  Here, the dust-proof space configured inside the external housing 1 will be described.

  A plurality of partition walls, that is, a first partition wall 60, a pair of second partition walls 71 and 72, and a third partition wall 80 are formed inside the outer housing 1.

  First, the first partition wall 60 is disposed so as to partition the first bearing portion 12 and the first gate member 16. In the present embodiment, the first partition wall 60 has a flat plate shape extending in the vertical direction. The upper end of the first partition wall 60 is in contact with the upper surface of the external housing 1, the lower end thereof is in contact with the bottom surface of the external housing 1, and both side ends thereof are in contact with the side walls of the external housing 1. With such a configuration, the first dust-proof space P is configured by being surrounded by the outer casing 1 and the first partition wall 60, and the first bearing portion 12, the connecting portion 13, and the first drive are provided in the first dust-proof space P. A device 15 is accommodated. Although not shown, the first partition wall 60 is fixed to the external housing 1 using a known instrument such as a screw or a fastener.

  Further, the first gate shaft 17 </ b> A penetrates the first through hole 61 formed in the first partition wall 60 without contacting the first partition wall 60. With such a configuration, the first bearing portion 12, the connecting portion 13, and the first driving device 15 of the first hopper 10 are disposed in the first dust-proof space P isolated from the first hopper 10. Further, since there is no contact between the first partition wall 60 and the first gate shaft 17A, generation of wear powder can be prevented.

  In the present embodiment, the four support members 33 penetrate the first partition wall 60, and the weight detector 30 is disposed in the first dust-proof space P. As a result, the space in which the weight detector 30 is disposed can be integrated into the first dust-proof space P, so that the structure of the quantitative filling device of the present invention can be simplified.

  Note that the four support members 33 penetrate the four fourth through holes 62 formed in the first partition wall 60 without contacting the first partition wall 60. A diaphragm-shaped cover member 34 is formed around the fourth through hole 62 so as to airtightly cover the gap with the support member 33. The cover member 34 can prevent the object to be weighed from adhering to the weight detector 30. Further, since the cover 34 is made of a thin rubber member, the influence on the detection accuracy of the weight detector 30 is extremely small, and there is no practical problem.

  Next, the second partition walls 71 and 72 are disposed so as to partition the second bearing portions 21A, 21B, 22A, and 22B and the second gate members 27 and 28 from each other. That is, the second partition wall 71 partitioning between the second bearing portions 21A, 22A and the second gate members 27, 28, and the second partitioning partition between the second bearing portions 21B, 22B and the second gate members 27, 28. A partition wall 72 is configured. In the present embodiment, the pair of second partition walls 71 and 72 are parallel to each other with the second gate members 27 and 28 therebetween, and each has a flat plate shape extending in the vertical direction. Further, the upper ends of the second partition walls 71 and 72 are in contact with the upper surface of the external housing 1, the lower ends thereof are in contact with the bottom surface of the external housing 1, and the side ends of the second partition walls 71 and 72 are concretely the side walls of the external housing 1. The second lid member 4 is in contact with the other end, and the other end is in contact with the first partition wall 60. With such a configuration, the second dust-proof space Q is configured by being surrounded by the outer casing 1, the second partition wall 71, and the first partition wall 60, and the second bearing portions 21A, 22A, The 2nd joint part 23 and the 2nd drive device 25 are accommodated. In addition, a third dustproof space R is configured by being surrounded by the outer casing 1, the second partition wall 72, and the first partition wall 60, and the second bearing portions 21 </ b> B and 22 </ b> B and the second joint portion are formed in the third dustproof space R. 24 and the second drive device 26 are accommodated. Although not shown, the second partition walls 71 and 72 are fixed to the external housing 1 using known tools such as screws and fasteners.

  In addition, the second gate shaft 41 penetrates the second through hole 73A formed in the second partition 71 on one end side without contacting the second partition 71 (see FIG. 4), and the second gate shaft 41 has the second partition 72 on the other end side. The second through hole 73 </ b> B formed in the first through hole is penetrated without contacting the second partition wall 72. That is, the end of the second gate shaft 41 is located in either the second dustproof space Q or the third dustproof space R.

  Similarly, the second gate shaft 42 penetrates through the second through hole 74A formed in the second partition wall 71 on one end side without contacting the second partition wall 71 (see FIG. 4), and the other end side is connected to the second through hole 74A. The second through hole 74 </ b> B formed in the partition wall 72 is penetrated without contacting the second partition wall 72. That is, the end portion of the second gate shaft 42 is located in either the second dustproof space Q or the third dustproof space R.

  Furthermore, as shown in FIG. 4, the arm members 51 and 52 penetrate the third through holes 75 and 76 formed in the second partition walls 71 and 72 without contacting the second partition walls 71 and 72.

  With such a configuration, the second bearing portion 21A, 21B, 22A, 22B, the second joint portion 23, 24, and the second driving device 25, 26 of the second hopper 20 are separated from the second hopper 20 by the second dustproof. Arranged in the space Q and the third dust-proof space R. Further, since there is no contact between the second partition walls 71 and 72 and the second gate shafts 41 and 42 and the arm members 51 and 52, generation of wear powder can be prevented. Further, the second gate shafts 41 and 42, the arm members 51 and 52, the second bearing portions 21 </ b> A, 21 </ b> B, 22 </ b> A and 22 </ b> B, the second joint portions 23 and 24, and the second driving devices 35 and 36 are detected through the main body 27. Since it is supported by the container 30, the weight change of the second hopper 20 can be accurately measured.

  As shown in FIG. 4, the second partition wall 71 is divided into an upper member (wall member) 71A, a middle member 71B, and a lower member 71C in order from the top. In maintenance work of the first hopper 10, it is only necessary to remove the upper member 71A, and it is not necessary to remove the middle member 71B and the lower member 71C.

  Further, the second through holes 73A and 74A and the third through hole 75 are formed by the joint gap between the middle member 71B and the lower member 71C. Specifically, the joint gap between the middle member 71B and the lower member 71C is locally formed in a circular shape, and the second through holes 73A and 74A and the third through hole 75 are formed. Although not shown, the other second partition wall 72 is similarly configured. With such a configuration, the second partition walls 71 and 72 can be attached and detached while the second gate shafts 41 and 42 and the arm members 51 and 52 are attached, so that maintenance work of the quantitative filling device can be performed more easily. can do.

  Further, the second partition wall 71 is formed with a ventilation portion 71F. The ventilation portion 71F has a fine mesh stretched through a through hole formed in the middle member 71B. Thereby, the pressure fluctuation accompanying operation | movement of the 1st hopper 10 and the 2nd hopper 20 can be missed.

  Next, the third partition wall 80 is disposed so as to partition the first bearing portion 11 and the first gate member 16. In the present embodiment, the third partition wall 80 extends vertically downward from the upper surface of the external housing 1 in parallel with the first partition wall 60 with the first gate member 16 therebetween, and the side wall of the external housing 1 in the middle. It is configured to be refracted to the side, specifically the second lid member 4 side, and to contact the second lid member 4. Further, both side ends of the third side wall 80 are in contact with the second partition walls 71 and 72. With such a configuration, the fourth dust-proof space S is configured by being surrounded by the outer casing 1, the third partition wall 80, and the pair of second partition walls 71 and 72, and the first bearing portion 11 is formed in the fourth dust-proof space S. Is housed. Although not shown, the third partition wall 80 is fixed to the external housing 1 using a known instrument such as a screw or a fastener.

  Further, the first gate shaft 17 </ b> B penetrates the fifth through hole 81 formed in the third partition wall 80 without contacting the third partition wall 80. With such a configuration, the first bearing portion 11 of the first hopper 10 is disposed in the fourth dust-proof space S isolated from the first hopper 10. In addition, since there is no contact between the third partition wall 80 and the first gate shaft 17B, generation of wear powder can be prevented.

  Here, in the present embodiment, the operations of the first gate shafts 17A and 17B and the second gate shafts 41 and 42 are configured such that only the shaft rotation is possible, and the first gate shafts 17A and 17B and the second gate shafts. 41 and 42 are not displaced. Accordingly, the first through hole 61 formed in the first partition wall 60, the second through holes 73A, 73B, 74A, and 74B formed in the second partition wall 71 and 72, and the fifth through hole formed in the third partition wall 80. Since the hole 81 can be made smaller, the dustproof performance of the first dustproof space P, the second dustproof space Q, the third dustproof space R, and the fourth dustproof space S can be further enhanced.

  Among the wall bodies constituting the external housing 1, a part of the side walls constituting the first dustproof space P, the second dustproof space Q, the third dustproof space R, and the fourth dustproof space S are configured to be removable. . That is, the first lid member 3 is configured to be detachable from a part of the side wall constituting the first dust-proof space P. The second lid member 4 is configured to be detachable from a part of the side wall constituting the second dust-proof space Q. The third lid member 5 is configured to be detachable from a part of the side wall constituting the third dust-proof space R. The fourth lid member 6 is configured to be detachable from a part of the side wall constituting the fourth dust-proof space S. With such a configuration, if a part of the wall surface of the external housing 1 is removed, the first bearing portions 11 and 12, the connecting portion 13, and the first drive device 15 can be easily obtained without interfering with the flow path of the object to be measured. The second bearing portions 21A, 21B, 22A, 22B, the second joint portions 23, 24, and the second driving devices 25, 26 can be approached. That is, since it can approach these in the state which operated the fixed-quantity filling apparatus, the operation state of a fixed-quantity filling apparatus can be confirmed. Therefore, the maintenance work of the quantitative filling device can be performed more flexibly.

  Although not shown, the first lid member 3, the second lid member 4, the third lid member 5 and the fourth lid member 6 can be attached to and detached from the external housing 1 using known tools such as screws and fasteners. It is joined.

  In addition, although not shown, the second lid member 4 and the third lid member 5 that face the second partition walls 71 and 72 are formed with a ventilation portion similar to the ventilation portion 71F of the second partition walls 71 and 72. ing.

  Here, operation | movement of the fixed quantity filling apparatus of this embodiment is demonstrated.

An object to be weighed is input from the input port 2 and stored in the main body 19 of the first hopper 10. The first gate member 16 is swung by the first driving device 15, and a substantially predetermined amount of the object to be weighed is supplied to the main body 29 of the second hopper 20. The weight of the object to be weighed in the second hopper 20 is detected by the weight detector 30. After the first gate member 16 is closed, the second gate members 27 and 28 are swung by the second driving devices 25 and 26, and the object to be weighed is filled in a lower container (not shown).

As shown in FIG. 5, one end of the side end of the first partition wall 60 is in contact with the second partition wall 71 and the other end is in contact with the second partition wall 72. Further, the second partition wall 71 is cut out at a portion that partitions the second dust-proof space Q and the fourth dust-proof space S, and the second dust-proof space Q and the fourth dust-proof space S are connected. Similarly, the second partition wall 72 is cut out at a portion that divides the third dust-proof space R and the fourth dust-proof space S, and the third dust-proof space R and the fourth dust-proof space S are connected. With such a configuration, the first dustproof space P, the second dustproof space Q, the third dustproof section R, and the fourth dustproof space S can be integrated into one dustproof space T.

(Second Embodiment)
The present embodiment is an embodiment in which a hopper having the same structure as the second hopper 20 is used for the first hopper 10 in the first embodiment.

FIG. 6 is a diagram schematically showing the internal structure of the constant-quantity filling apparatus according to the second embodiment of the present invention. FIG. 7 is a plan view showing an installation state of the second partition wall as in FIG. In FIG. 6, for convenience of explanation, the pair of second partition walls 171 and 172 are omitted.

  6 and 7, the same or corresponding parts as those in FIGS. 1 and 4 are denoted by the same reference numerals, description thereof is omitted, and only differences are described.

  As shown in FIG. 6, the first weighing hopper 110 of the present embodiment, like the second hopper 20, is provided with a pair of first gate members 127 and 178 at the bottom of the main body 119, and a pair of first gate hoppers 110. The gate members 127 and 178 are driven to open and close by the shaft rotation of the first gate shafts 141 and 142, respectively. The second dust-proof space Q includes a first gate shaft support structure that drives and supports the first gate shaft 141, and the third dust-proof space R includes a first gate shaft 142 that drives and supports the first gate shaft 142. One gate shaft support structure is configured. Accordingly, since the structures of the second dustproof space Q and the third dustproof space R are the same, the structure of the second dustproof space Q shown in FIG. 5 will be described below, and the description of the structure of the third dustproof space R will be omitted. To do.

  The first gate shaft support structure includes a first driving device 125, a second joint portion 123, and first bearing portions 111A and 112A. The first gate shaft support structure is attached to the arm member 151.

  And as shown in FIG. 7, the 2nd partition 171 is divided | segmented into the upper member (wall member) 171A, the middle part 171B, and the lower member 171C in an order from the upper part. The middle member 171B is configured with a ventilation portion 171F, similar to the ventilation portion 71F of the first embodiment.

  Here, the first through-holes 161A and 162A and the sixth through-hole 175 are formed by the bonding gap between the upper member 171A and the middle member 171B. The first gate shafts 141 and 142 penetrate the first through holes 161 </ b> A and 162 </ b> A formed in the second partition 171 without contacting the second partition 171. Further, the arm member 151 passes through a sixth through hole 175 formed in the second partition 171. The arm member 151 may be joined to the second partition wall 171. That is, the arm member 151 does not need to be supported by the main body 119 of the first hopper 110 and may be joined to a wall body such as the upper surface of the external housing 1.

  With such a configuration, the first bearing portions 111 </ b> A and 112 </ b> A of the first hopper 110, the first joint portion 123, and the first driving device 125 are disposed in the second dust-proof space Q isolated from the first hopper 110. In addition, since there is no contact between the second partition wall 171 and the first gate shafts 141 and 142, generation of wear powder can be prevented.

  Although not shown, the second partition wall on the third dust-proof space R side is similarly configured.

  With the configuration as described above, in the fixed-quantity filling device of the present embodiment, only the weight detector 30 is disposed in the first dust-proof space P, so that the object to be weighed is more attached to the weight detector 30. It can be completely prevented.

  Moreover, since the 4th dust-proof space S can be abbreviate | omitted, the partition structure inside the external housing | casing 1 can be simplified. Further, the parts of the first hopper 110 and the second hopper 20 can be shared.

  As mentioned above, although embodiment of this invention was described in detail, this invention is not limited to the said embodiment. For example, the second hopper 20 can be configured to have the same structure as the first hopper 10. In this case, the second gate shaft extends in the same direction as the first gate shaft, and the fourth dust-proof space S is extended downward to form the second bearing portion and the connecting portion of the second gate shaft, and The second driving device can be configured in the first dust-proof space P and the fourth dust-proof space S. That is, since the second dustproof space Q and the third dustproof space R can be omitted, the partition structure inside the external housing 1 can be further simplified.

  The present invention can prevent wear powder from being mixed into an object to be weighed in the maintenance and inspection work of the bearing part and joint part of the hopper, and the dust of the object to be weighed into the bearing part and joint part of the hopper. It is useful as a fixed-quantity filling device that can more reliably prevent intrusion.

It is a figure which shows typically the internal structure of the fixed quantity filling apparatus of 1st Embodiment of this invention. It is a top view of the quantitative filling apparatus lower part in the II-II line cross section of FIG. FIG. 3 is a top view of the upper part of the quantitative filling device in the section taken along line III-III in FIG. It is a top view which shows the installation state of the 2nd partition in the IV-IV sectional view of FIG. It is a figure which shows the modification of the partition structure of FIG. It is a figure which shows typically the internal structure of the fixed quantity filling apparatus of 2nd Embodiment of this invention. It is a top view which shows the installation state of a 2nd partition similarly to FIG. It is a schematic block diagram which shows typically the inside of the conventional fixed volume filling apparatus.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 External housing | casing 2 Input port 3 1st cover member 4 2nd cover member 5 3rd cover member 6 4th cover member 10 1st hopper 11, 12 1st bearing part 11A, 12A Support member 13 Connection part (joint part)
15 1st drive device 15A Support member 16 1st gate member 17A, 17B 1st gate axis | shaft 19 Main body 20 2nd hopper 21A, 21B, 22A, 22B 2nd bearing part 23, 24 2nd joint part 25, 26 2nd drive Devices 25A, 26A Drive shafts 25B, 26B Mooring members 27, 28 Second gate member 29 Main body 30 Weight detector 31 Support member 32 Support member
33 Support member 34 Cover member 41, 42 Second gate shaft 41A, 41B, 42A, 42B Fixing member 51, 52 Arm member 60 First partition wall 61 First through hole 62 Fourth through hole 71, 72 Second partition wall 71A Upper member 71B Middle member 71C Lower member 71F Ventilation parts 73A, 73B, 74A, 74B Second through holes 75, 76 Third through hole 80 Third partition wall 81 Fifth through hole 110 First hopper 111A, 112A First bearing part 119 Main body 123 , 124 First joint portion 125 First driving device 127, 128 First gate member 141, 142 First gate shaft 151 Arm member 161A, 162A First through hole 171 Second partition 171A Upper member 171B Middle member 171C Lower member 171F Ventilation Portion 175 Sixth Through-hole 500 Fixed Filling Device 501 External Housing 502 Input Port 510 First Hopper 11, 512 First bearing portion 513 First joint portion 515 First driving device 516 First gate member 520 Second hopper 521A, 522A Second bearing portion 523, 524 Second joint portion 525, 526 Second driving device 527, 528 Second gate member 530 Weight detector P First dustproof space Q Second dustproof space R Third dustproof space S Fourth dustproof space T Dustproof space

Claims (5)

  An external housing having an inlet formed on the top surface;
  A first hopper located below the inlet and having a first gate member at the bottom;
  A second hopper located below the first hopper and having a second gate member at the bottom;
  A first driving device for opening and closing the first gate member;
  A second driving device fixed to the main body of the second hopper and driving to open and close the second gate member;
  A weight detector for detecting a change in weight of the second hopper;
  A first gate shaft fixed to the first gate member and connected to the first driving device;
  A second gate shaft fixed to the second gate member and connected to the second driving device;
  A support member for connecting and fixing the weight detector and the main body of the second hopper;
  A first bearing portion that rotatably supports the first gate shaft away from the first gate member;
  A fixed amount filling device comprising: a second bearing portion that rotatably supports the second gate shaft away from the second gate member;
  Partitioning the internal space of the external housing into a first space and a second space, and further comprising a partition wall formed with a plurality of through holes;
  The first hopper and the second hopper are arranged in the first space,
  In the second space, the first driving device, the second driving device, the weight detector, the first bearing portion, and the second bearing portion are arranged,
  The fixed-quantity filling device, wherein each through-hole formed in the partition wall is configured so that the first gate shaft, the second gate shaft, and the support member pass through in a non-contact state.   The partition has a ventilation portion for ventilating the first space and the second space,
  The quantitative filling device according to claim 1, wherein the ventilation portion is formed by stretching a net in a window-like hole formed in the partition wall.   The quantitative filling device according to claim 1 or 2, wherein the partition wall is formed in a cylindrical shape so as to surround the first hopper and the second hopper.   The partition is divided into a plurality of wall members,
  The quantitative filling device according to any one of claims 1 to 3, wherein a boundary line between the wall members is formed so as to pass through at least one of the through holes.   A diaphragm-shaped cover member disposed around the through-hole through which the support member passes and formed to cover a gap with the support member;
  The second space is further divided into a plurality of spaces,
  The weight detector is disposed in a space different from the first drive device, the second drive device, the first bearing portion, and the second bearing portion in the second space. The fixed-quantity filling apparatus as described in any one of 1 thru | or 3.

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