JP2011016068A - Quantitative discharge device using valve member - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a quantitative discharge device using a valve member which is of such a design that a sealing effect can be enhanced by giving a certain degree of freedom of making a displacement by outward expansion to the outside, with regard to the apex part which is slightly projectable from the outer circumferential surface of a piston body of an encircling seal of U-shape sectional form which constitutes an elastic seal member.SOLUTION: This quantitative discharge device operates with the help of a valve member on condition that an inner cylindrical body can be rotated by the drive force of a drive source and the extrusion actuator of the valve member can be removed from a drive actuating rod. In details, a stepped-shape notched part is circumferentially installed at the rear end part of the piston body of the extrusion actuator, and a male thread is formed at the rear end surface of the notched part. Further, an encircling seal with a U-shape sectional form, which has a notched part at the apex side and is equipped internally with an elastic ring capable of coming into contact under pressure with a perpendicular wall surface, is fitted into the notched part of the piston body. After these procedures, the perpendicular rear end surface of the encircling seal is screwed with the help of a ring-like hold-down tool which fits into the male thread, and the circumferential wall part of the encircling seal is displaced by outward expansion in inclined fashion, so that the apex surface of the circumferential wall part of the encircling seal, can slightly project from the outer circumferential surface of the piston body, using the elastic distortion of the elastic ring.

Description

  The present invention relates to a quantitative discharge device using a valve member capable of discharging solids such as liquids, powders, granules, beans, cut meat and vegetables.

  In Patent Document 1 and Patent Document 2, the valve member includes an outer cylinder as an outer valve, an inner cylinder as an inner valve that is rotatably incorporated in the outer cylinder, and a slide on the inner cylinder. A push-out actuating body in which a moving part is incorporated and a follower actuating rod, and on the other hand, a drive source side includes a drive source and a drive actuating rod that moves horizontally by the force of the drive source and guided by a support member, Engagement / disengagement of the operating rod in which the engagement portion of the rear end portion of the valve member is engaged with and disengaged from the connecting support attached to the driving operating rod when the driven operating rod of the valve member and the driving operating rod on the driving source side are connected. A fixed-volume discharge device using a valve member having a structure is disclosed.

  Further, FIG. 3 of Patent Document 1 discloses a seal structure of an extrusion operating body as a piston. The seal structure of the push-out actuating body has a slightly small diameter so that the rear end portion of the piston body 7 of the push-out actuating body slidably fitted to the cylinder (inner valve) 6 is fitted with the short cylindrical seal 21. The short cylindrical seal 21 is formed in a taper 23 whose tip inner peripheral surface is widened, and a stepped portion provided on the outer peripheral surface of the rear end portion of the piston body 7 that abuts the taper is provided on the front side. The short cylindrical seal presser 22 is fitted from the rear of the short cylindrical seal, and the short cylindrical seal 21 is pressed forward, so that the short cylindrical seal 21 rises toward the front. The tip of the cylindrical seal is configured to be able to slightly protrude from the outer peripheral surface of the piston body 7 (reference numerals are those described in the publication).

  As described in paragraph 0015 of the patent document, the seal structure of the push-out actuating body is “even if the fitting (of the piston main body with respect to the inner valve) is loosened, the fitting portion (the outer peripheral surface of the piston main body The soup liquid is difficult to leak from the inner peripheral surface of the inner valve, and the drive torque of the push-out and pull-in (of the push-out operation body) can be reduced. However, the short cylindrical seal 21 is annular. In addition, the piston main body 7 is fitted in close contact with the notch-shaped step at the rear end of the piston main body 7 and is directly pressed by the front surface of the non-elastic annular presser 22. The tip (tip or peripheral wall end) that can slightly protrude from the outer peripheral surface of the outer peripheral surface has a degree of freedom of outward expansion displacement.

  Therefore, the advantages described in Patent Document 1 (particularly, the sliding contact portion as the fitting portion of the piston body is fitted in the inner peripheral wall of the inner valve in a state having a gap so that the push-out operation body is attached to and removed from the inner valve. The sealing effect is improved by providing a degree of freedom to expand outwardly in a slanting manner with respect to the tip (tip or peripheral wall end) that can slightly protrude from the outer peripheral surface of the piston body 7 while taking advantage of the fact that it is easy) The appearance of a seal structure for the push-out operating body that can be achieved is expected.

  By the way, since the inner peripheral surface of each inner cylinder of patent documents 1 and patent documents 2 is circular in section, when the inner cylinder rotates 180 degrees and the inner valve opening communicates with the discharge port of the outer cylinder, Although liquids stored in the inner cylinder, such as soups with ingredients, all have the advantage of flowing down naturally, the stored items that fall through the outer cylinder from the hopper are rice, soybeans, processed materials, food materials, after processing In the case of a solid product such as fried rice (for example, fried rice), the inner cylinder has a cylindrical shape, whereas the inner valve opening is a circular shape (a long hole is also formed on a part of the wall surface of the inner cylinder). Therefore, there is a problem in that a part of the solid matter remains on the edge of the inner valve opening and the like, and even if the push-out operating body moves forward, it is not completely discharged from the discharge port of the outer cylinder. Therefore, it is desirable to have a quantitative discharge device that uses a valve member that smoothly discharges (including drops) all solid matter that has fallen into the inner cylinder from the inner valve opening to the discharge port of the outer valve.

JP 2004-188385 A JP 2007-7505

  The intended purpose of the present invention is based on the premise that the push-out actuating body of the valve member can be removed from the drive actuating rod, that is, while taking advantage of the effect that the push-out actuating body is easily attached to and detached from the inner valve, To improve the sealing effect by providing a degree of freedom to expand outwardly in an inclined manner with respect to the peripheral wall portion that can slightly protrude from the outer peripheral surface of the piston main body of the surrounding seal having a U-shaped cross section constituting the elastic seal member It is. The preliminary purpose is that, in view of the problems of Patent Document 1, Patent Document 2, etc., all the powder and solid matter that have fallen into the inner cylinder are smoothly pushed out from the inner valve opening to the outlet of the outer valve. is there.

  In the quantitative discharge device using the valve member of the present invention, the valve member includes an outer cylinder as an outer valve, an inner cylinder as an inner valve that is rotatably incorporated in the outer cylinder, and an inner cylinder. A push actuating body incorporating a piston body, and a drive source side having a drive source and a drive actuating rod that moves horizontally by the force of the drive source and guided by a support member; An engaging portion of the operating rod that engages and disengages with a connecting support attached to the driving operating rod when the engagement portion of the rear end portion of the valve member is connected to the driving operating rod on the driving source side, In a metering discharge device with a valve member on the premise that the cylinder is rotated by the driving force of the drive source and the push-out actuating member of the valve member can be removed from the drive actuating rod, Stepped notch on the rear end of the piston body Both are formed with a male screw on the rear end surface of the cutout portion, and fitted with an enclosed seal having a U-shaped cross section that includes an elastic ring whose front end can be pressed against a vertical wall surface forming the cutout portion. Then, the vertical rear end surface of the surrounding seal is screwed with a ring-shaped presser screwed into the male screw, and the distal end surface of the peripheral wall portion of the surrounding seal is made slightly more than the outer peripheral surface of the piston body by utilizing elastic deformation of the elastic ring. The peripheral wall portion is outwardly displaced in an inclined manner so as to protrude.

  In the above-described configuration, a fitting portion 52 that fits with a fitted portion provided on the inner peripheral wall of the inner cylinder is protruded from the tip surface of the piston body 18a, and the lower end surface of the fitting portion 52 is The piston body 18a is located on the inner side in the radial direction from the lower end surface.

  Further, the constant volume dispensing device using the valve member of the present invention includes an outer cylinder body as an outer valve, an inner cylinder body as an inner valve that is rotatably incorporated in the outer cylinder body, and the inner cylinder. The body is provided with a push-out operating body in which a piston body is incorporated, and the drive source side is provided with a drive source and a drive operating rod that moves horizontally by the force of the drive source and guided by a support member, An engaging portion of the operating rod that engages and disengages the connecting support attached to the driving operating rod at the engagement portion of the rear end of the valve member when connecting the driving rod to the driving source rod on the driving source side; The push-out operation in the metering discharge device by the valve member on the premise that the inner cylinder is rotated by the driving force of the drive source and the push-out actuating member of the valve member can be removed from the drive actuating rod. Stepped notch around the rear end of the piston body An encircling seal having a U-shaped cross section, which includes an elastic ring whose tip side can be pressed against a vertical wall surface forming the notch portion, is fitted to the notch portion, while a follower moving rod (piston rod) of the push-out operating body is fitted A ring-shaped presser that is screwed into a male screw formed at the root portion of the base is provided on the follower moving rod, and the vertical rear end surface of the surrounding seal is pressed against the front surface of the peripheral end of the presser by screwing the presser. By using the elastic deformation of the elastic ring, the peripheral wall portion is outwardly displaced in an inclined manner so that the front end surface of the peripheral wall portion of the surrounding seal can slightly protrude from the outer peripheral surface of the piston body. To do.

  The quantitative discharge device of the present invention can discharge solids such as liquids, powders, granules, beans, cut meats and vegetables quantitatively. Here, “solid” includes granular materials such as rice, beans, cut meat and vegetables. In addition, the solid material includes not only the material before processing but also the material after processing (for example, fried rice). In addition, the “solid matter” here may include a liquid mainly composed of a solid matter.

(A) A tip portion (peripheral wall) that can slightly protrude from the outer peripheral surface of the piston main body of the surrounding seal having a U-shaped cross section constituting the elastic seal member while taking advantage of the fact that the push-out operation body is easily attached to and detached from the inner valve. With respect to the portion), it is possible to improve the sealing effect by giving a degree of freedom of outward expansion and displacement in an inclined direction.
(B) In the invention according to claim 2, the lower end surface of the fitting portion 52 at the front end surface of the piston main body 18a is located on the inner side in the radial direction from the lower end surface of the piston main body 18a. Attachment and removal of the body can be further simplified, and all the powder and solid matter that have fallen into the inner cylinder can be discharged smoothly from the discharge port of the outer valve.

  First, the main part of the present invention will be described, and then each member constituting the present invention will be described in detail. 1 to 18 are examples of the present invention.

(1) Characteristic part of the present invention The characteristic part of the present invention is that the elastic seal member 60 attached to the rear end of the piston body (sliding part) 18a of the push-out operating body 18 has a double structure. . That is, as shown in FIG. 11, the elastic seal member 60 includes an elastic ring 61 and a surrounding seal 62 having a U-shaped cross section surrounding the elastic ring 61 except for the front side of the elastic ring 61. Then, the peripheral wall portion 62b is outwardly expanded and displaced in an inclined manner so that the front end surface of the peripheral wall portion 62b of the surrounding seal can be slightly protruded from the outer peripheral surface of the piston body 18a by using elastic deformation of the elastic ring. Is new.

  Both the elastic ring 61 and the surrounding seal 62 are made of synthetic resin. Therefore, the elastic seal member 60 has an elastic deformation function, an elastic deformation return function, a rigid function, and the like.

  Thus, in this embodiment, as shown in FIGS. 12 and 13, a stepped notch 63 is provided around the rear end of the piston body (sliding part) 18a of the push-out operating body 18, and the notch A male screw 64 is formed on the rear end surface of the portion 63, and an enclosed seal 62 having a U-shaped cross section is fitted into the cutout portion 63. The elastic ring 61 is fitted on the front end of the cutout portion 63 so as to be in pressure contact with the vertical wall surface 63a. Further, the vertical rear end face 62a of the surrounding seal 62 is screwed with a ring-shaped presser 65 that is screwed into the male screw 64, and the elastic body 61 is used to elastically deform the piston main body 18a of the surrounding seal 62. The peripheral wall part 62b from which the front-end | tip part can protrude a little is spread outwardly from an outer peripheral surface.

  In the above configuration, as shown in FIG. 10, the inner cylindrical body 11, more precisely, the inner peripheral surface of the long cylindrical main body 11a constituting the inner cylindrical body 11 and the outer peripheral surface of the piston main body (sliding portion) 18a. Since a slight gap d is generated between the piston body 18 and the inner cylinder body (inner valve) 11, when the piston body (sliding portion) 18a is slightly inclined, the pushing operation is performed. The body 18 can be easily fitted into the inner cylinder (inner valve) 11.

  Particularly, in the push-out operating body 18 of the present embodiment, a thick fitting portion 52 is formed to protrude from the tip surface of the piston body 18a, and the lower end surface of the thick fitting portion (reverse valley shape). Is located radially inward of the lower end surface of the piston main body 18a, so that the effect that the push-out actuating body 18 is easily mounted and removed from the inner cylinder (inner valve) 11 can be fully utilized. Can do.

  Further, the peripheral wall portion 62 b of the surrounding seal 62 is screwed with a ring-shaped presser 65 so that the elastic ring 61 is pressed against the inner wall surface of the vertical rear end surface 62 a of the surrounding seal 62 and the vertical wall surface 63 a of the notch portion 63 in a sandwich manner. Therefore, the elastic ring 61 is elastically deformed so as to swell in the vertical direction where the gap of the notch portion is physically present. As a result, as shown in FIG. 13, the peripheral wall portion 62b orthogonal to the vertical rear end face 62a is Displaces outward in an inclined manner. Therefore, the front end surface of the peripheral wall portion 62b slightly protrudes from the outer peripheral surface of the piston body 18a.

  Thus, when pressure is applied to the predetermined volume chamber a of the inner cylinder (inner valve) 11, pressure is applied to the annular tip surface of the inclined peripheral wall portion 62 b, so that the ring-shaped presser 65 has a degree of freedom. The peripheral wall 62b is elastically displaced in the opening direction. Therefore, the sea effect of the elastic seal member 60 can be sufficiently exhibited.

(2) Preliminary Features The preliminary features of the present invention are that the push-out actuating body 18 corresponding to a piston is fitted to the inner cylinder 11 so that it can rotate together with the inner cylinder 11. When the inner cylinder 11 is in a dischargeable state with respect to the outer cylinder 2, the push-out actuating body 18 moves forward so that the powder or solid material stored on the distal end side of the inner cylinder opens the inner valve opening 12. When the push-out actuating member 18 rotates together with the inner cylinder 11 and enters a standby state, at least when the push-out actuating member 18 is in a standby state, the solid material is discharged from the hopper 5. Is retracted to receive it on the tip side of the inner cylinder.

  Specifically, for example, as shown in FIG. 17, FIG. 18, etc., a fitted portion 51 having a recessed section is provided on the distal end side of the inner peripheral wall of the inner cylinder 11, while the piston of the push-out actuating body 18. A protruding fitting portion 52 that is just fitted to the fitting portion 51 is provided at the distal end portion of the main body 18a, and the push-out operating body 18 removes the powder or solid matter b dropped from the hopper 5. The inner cylinder 11 and the discharge port 6 of the outer cylinder 2 are rotated by the driving force of the drive source 21 disposed in the fitting portion 51 and disposed on the rear side of the pusher 18.

  Here, referring to FIG. 18, the fitted portion 51 gradually becomes narrower in a U-shaped cross section or from the opening portion 51 a on the outer peripheral surface to the non-opening portion 51 b corresponding to the inner bottom surface. The cross-sectional shape of the fitted portion 51 may be U-shaped, but preferably a “valley shape” as shown in the embodiment. When the cross-sectional shape of the fitted portion 51 is a valley shape, when the inner cylinder 11 is rotated 180 degrees to be in a discharge state, the opening portion 51a of the fitted portion 51 is more than the non-opening portion 51b. Is also wide, that is, the opening 53 of the fitted part 51 has a mountain shape, so that the powder and solid matter b in the opening 53 of the fitted part 51 are discharged from the outlet of the outer cylinder 2. When exiting 6 (for example, falling and being discharged from the discharge port), all of the weight is smoothly dropped or pushed out without remaining in the inner cylinder 11. The size (width) of the opening portion 51a of the fitted portion 51 is set so as to match the outer valve opening 3, the inner valve opening 12, and the like.

  Desirably, as shown in FIG. 2, when the push-out operating body 18 is retracted and retracted to the origin position, the protruding fitting portion 52 of the push-out operating body 18 is the rear end portion of the fitted portion 51. It is set so as not to deviate from. FIG. 2 shows a state where the thick fitting portion 52 of the push-out actuating body 18 is supported by the rear end portion of the fitted portion 51 of the inner cylinder 11 when the push-out actuating body 18 is retracted. .

  Further, in this embodiment, as shown in FIG. 2, the front end surface of the fitting portion 52 of the push-out operating body 18 is located on the rear side when the inner cylinder 11 receives the solid material b from the hopper 5 as a reference. Since it is slightly inclined, it is easy to accept the solid matter b and at the same time to extrude it.

(3) Specific configuration of each member X is a metering discharge device using a valve member, and the outer cylinder and inner cylinder of the metering discharge device X are arranged laterally on the upper surface of the upper horizontal plate 1a of the fixed member 1. It is arranged. The upper horizontal plate 1a is appropriately formed with a plurality of openings or notches such as a valve member opening, a drive gear opening, and a transmission gear opening without reference numerals. In addition, on the lower surface side of the upper horizontal plate 1a, one drive source (drive motor) 21 for the fixed quantity discharge device X is disposed in the lateral direction via a motor mounting plate. A case-like mounting frame 1c is provided at the rear end portion on the upper surface side of the upper horizontal plate 1a, and a through-hole of the mounting frame 1c is provided with an operating rod (hereinafter referred to as a “following operating rod 19”). The rear end portion of the drive actuating rod 20 that locks “)” is guided. The follower operating rod 19 and the drive drive operating rod 20 can be detachably connected by an engaging rod engaging / disengaging structure Z described later.

  The mounting frame 1c is provided with a plurality of position detecting means S2 for the push-out actuating body 18 with a required interval. An anti-rotation stand 37 for the push-out actuating body 18 is installed in the mounting frame 1c, and the upper surface of the anti-rotation stand 37 is engaged with an engaging portion 20b provided on the drive operating rod 20. A joint portion 37a is formed. The engagement portion 20b of the drive actuation rod 20 is a vertical engagement piece (for example, an engagement pin) that intersects the drive actuation rod 20, while the engaged portion 37a is a long groove-like guide groove. . In the present embodiment, an index or magnet piece 38 for the detecting means S2 is provided in a horizontal state at the upper projecting end of the engaging portion 20b. Therefore, the push-out actuating body 18 can reciprocate via the rotation preventing means constituted by the engaging portion 20b provided on the drive operating rod 20 and the engaged portion 37a provided on the fixed-side member 1.

  Further, the fixed side member 1 has a lower horizontal plate 1b facing the upper horizontal plate 1a, and a driving means (solenoid) 31 constituting the clutch mechanism Y is arranged in the lateral direction on the upper surface of the lower horizontal plate 1b. It is installed.

(4) Outer cylinder 2
The outer cylindrical body (outer valve) 2 includes a long cylindrical peripheral body portion 2a that is open at both left and right ends, and a head 2b that fits into an opening on one end side of the peripheral body portion 2a. First, the configuration of the circumferential trunk portion 2a will be described. Reference numeral 3 denotes an outer valve opening formed on the upper surface of one end, and a hopper 5 is detachably attached to the outer valve opening 3. Reference numeral 6 denotes a discharge port formed on the lower surface of the one end. The discharge port 6 faces the outer valve opening 3, and a seal member 7 including a cylindrical discharge nozzle can be screwed into the discharge port 6. Mounted on. The outer cylinder 2 having the head 2b has a required length and is detachably fixed to the upper horizontal plate 1a. The outer valve opening 3 and the discharge port 6 are singular in this embodiment. The shapes of the outer valve opening 3 and the discharge port 6 are, for example, circular.

(5) Inner cylinder 11
In this embodiment, the inner cylindrical body (inner valve) 11 is rotated by the driving force of one driving source 21, and a predetermined amount of powdery body or solid matter b is passed through the outer valve opening 3 from the hopper 5. It is a fixed quantity cylinder which is taken in and discharged to the outside through the discharge port 6.

  Therefore, the inner cylinder 11 exhibits the function of the inner valve with respect to the outer cylinder 2 corresponding to the valve body. Therefore, one inner valve opening 12 that selectively communicates with the outer valve opening 3 and the discharge port 6 of the outer cylinder 2 is formed at the insertion tip (left in the drawing) of the inner cylinder 11.

  By the way, the inner cylindrical body 11 of the present embodiment has a long cylindrical main body 11a and a short cylindrical rear end 11b that can be engaged with and disengaged from the long cylindrical main body and encloses a connecting support described later. The short cylindrical rear end portion 11b is always urged in a direction to engage with the rear end portion of the long cylindrical main body 11a by the elastic member 4 provided on the drive source side.

  In other words, the valve member V of the present embodiment includes an outer cylinder 2 as an outer valve having an outer valve opening 3 and a discharge port 6, and an inner valve as an inner valve rotatably incorporated in the outer cylinder. The cylinder 11 and a pushing body (piston) 18 having a piston main body 18a incorporated in the inner cylinder and having a follower moving rod 19 are included. When the operating rods 19 and 20 are connected to each other, the valve member V is easily connected when the valve member V is pushed in the horizontal direction with respect to the taper 46b of the locking portion 46 of the connection support 41. When removing the valve member V, for example, if the valve member V is slightly lifted, the engagement relationship between the valve member V and the connection support 41 is easily eliminated.

  Here, with reference to FIG.1 and FIG.2, the engagement relationship of the long cylindrical main body 11a and the short cylindrical rear end part 11b is demonstrated. One or a plurality of engaged portions (notch grooves) 13 are formed on the joining end surface of the rear end portion of the long cylindrical main body 11a. Accordingly, one or a plurality of engaging portions (projections) that are engaged with and disengaged from the engaged portion 13 are formed on the joining end surface of the short cylindrical rear end portion 11b. The elastic member 4 of the present embodiment is positioned between the first support plate 17a provided on the upper surface of the upper horizontal plate 1a of the stationary member 1 and the outer wall surface of the short cylindrical rear end portion 11b. It is wound around the cylindrical shaft portion 14 a of the driven gear 14.

  Moreover, with reference to FIG. 1, the engagement relationship of the cylindrical shaft part 14a of the driven gear 14 and the short cylindrical rear-end part 11b is demonstrated. FIG. 1 is a schematic explanatory view in which the driven gear 14 and the inner cylinder 11 are integrally assembled. The driven gear 14 has a plurality of engaged portions (notched portions in the axial direction) 15 on the outer peripheral wall of the cylindrical shaft portion 14a. Therefore, the short cylindrical rear end portion 11 b has a plurality of engaging portions (projections) 16 that engage with the engaged portion 15 at the edge of the shaft hole.

  The driven gear 14 is disposed between the first support plate 17a and the second support plate 17b so as to be loosely fitted to the drive operating rod 20 and mesh with the drive gear 23. The second support plate 17b is provided on the upper surface of the upper horizontal plate 1a of the fixed member 1 so as to face the first support plate 17a. When the drive gear 23 on the output shaft 22 side is rotated by the drive force of the drive motor 21, the driven gear 14 and the inner cylinder 11 are rotated simultaneously.

  Thus, while the inner valve opening 12 of the inner cylinder 11 communicates with the upper outer valve opening 3, the lower discharge port 6 is closed, while the inner valve opening 12 communicates with the discharge port 6. The outer valve opening 3 is closed.

(6) Detection means S1 for the inner cylinder 11
Above the upper horizontal plate 1a of the fixed member 1, a detection means S1 for the inner cylinder 11 is disposed via a second support plate 17b. This detection means S1 detects the rotational position of the inner cylinder 11. As the detection means S1, one using the Hall IC principle, one using a light emitting element and a light receiving element, or the like can be appropriately employed. In the present embodiment, a plurality of magnets are respectively fixed to appropriate portions of the outer peripheral wall of the driven gear 14, while a Hall element is employed as the detection means S <b> 1 of the fixed side member 1.

  Therefore, when the inner cylinder 11 is rotated "180 degrees" by the driving force of the driving source 21 and one magnet faces the detecting means S1, the detecting means S1 picks up the "N pole" magnetic flux of the magnet and The rotational position of the inner cylinder 11 can be output to the control unit that does not.

(7) Extrusion actuator 18
The seal structure of the push-out operation body 18 is as described above. The push-out operating body 18 has a piston main body 18 a at the tip end incorporated in the inner cylinder 11. When the piston main body 18a moves backward to a predetermined position (for example, at the maximum discharge amount), it forms a predetermined volume chamber a. On the other hand, when the piston main body 18a moves forward to the predetermined position, the piston body 18a It has a function of extruding the powdery material and solid material b that have fallen into the surface.

  In order to easily set or remove the valve member V from the fixed side member 1 for the purpose of cleaning the valve, replacing parts, etc., the operating rod of this embodiment is “divided into two parts” at appropriate points. That is, one is a follower actuating rod 19 of the push-out actuating body 18 constituting the valve member V, and the other is a drive actuating rod 20 on the drive source side slidably disposed on the fixed member 1.

  By the way, the drive operating rod 20 penetrates the short cylindrical inner cylinder 11b, the driven gear 14, the support plates 17a and 17b, etc., which are disposed at predetermined positions of the fixed side member 1, and in this embodiment “long” It is a cocoon-shaped screw body.

  Then, the push-out actuating body 18 integrally connected to the drive actuating rod 20 is driven by the same driving motor 21 through the clutch 34 of the clutch mechanism Y provided on the fixed side member 1 (an example). It is provided so as to reciprocate in the axial direction of the motor 21. Therefore, the drive source 21 for the fixed quantity dispensing apparatus X will be described.

(8) Drive source 21
The drive motor 21 as a drive source is horizontally provided on the lower surface side of the upper horizontal plate 1a via a pair of left and right bearing plates 24 and 25. The left bearing plate 24 supports the base side of the output shaft 22 and serves as a motor mounting plate. On the other hand, the right bearing plate 25 supports the protruding end of the output shaft 22. Therefore, the output shaft 22 of the drive motor 21 is supported in a stable state. A drive gear 23 that meshes with the driven gear 14 is fixed to the output shaft 22 of the drive motor 21. The drive gear 23 cooperates with the output shaft 22. Further, a transmission gear (second drive gear) 26 that is opposed to the drive gear 23 with a required interval is fixed to the output shaft 22. Therefore, the transmission gear 26 also cooperates with the output shaft 22.

  The transmission gear 26 meshes with a cylindrical threaded body (second driven gear) 27 that meshes with a threaded portion 20 a formed on the drive operating rod 20. Therefore, when the cylindrical threaded body 27 is rotated in the forward direction and the reverse direction by the driving force of the drive motor 21, the push-out operating body 18 reciprocates in the inner cylindrical body 11 via the drive operating rod 20.

  The cylindrical threaded body 27 is sandwiched between a second support plate 17b and a mounting frame 1c fixed to the upper surface of the upper horizontal plate 1a with a predetermined interval. The cylindrical screw body 27 rotates in a stable state at a predetermined position.

(9) Detection means S2 for the push-out operating body
A plurality of detection means S2 for the push-out actuating body 18 are arranged on the case-like mounting frame 1c in order to detect the origin (starting) position of the push-out actuating body 18, the forward end position of the push-out actuating body, and the like. A limit switch is used as an example of the detection means S2. The index or magnet 38 for the detecting means S2 is provided via the engaging portion 20b of the drive operating rod 20.

(10) Clutch mechanism Y
Meanwhile, a plurality of engaged portions (small holes, small grooves, etc.) 23a, 26a are formed on the opposing surfaces of the drive gear 23 and the transmission gear 26. The clutch 34 constituting the clutch mechanism Y is engaged with and disengaged from the engaged portions 23a and 26a.

  The components of one clutch mechanism Y will be described. Reference numeral 31 denotes a clutch driving means (for example, a solenoid) installed horizontally on the upper surface of the lower horizontal plate 1b. Reference numeral 32 denotes an operating rod of the solenoid 31, and 33 denotes an upward engaging arm fixed in an orthogonal state to the distal end portion of the operating rod 32.

  A clutch 34 is provided on the output shaft 22 of the drive motor 21 so as to be slidable in the axial direction, and is selectively coupled to the drive gear 23 or the transmission gear 26. The clutch 34 according to the present embodiment is a block body that looks like an H-shape in a step view and has a plurality of engagements engaged with and disengaged from the engaged portion 23a of the drive gear 23 on one vertical plate. Pins are provided.

  On the other hand, the other vertical plate is provided with a plurality of engaging pins that engage with and disengage from the engaged portion 26a of the transmission gear 26. The upper end portion of the engagement arm 33 described above is located between the vertical plate 35 and the vertical plate 36.

  Therefore, when the operating rod 32 of the solenoid 31 extends, the clutch 34 slides in a direction approaching the drive motor 21, and the left vertical plate 35 is coupled to the drive gear 23. On the other hand, when the operating rod 32 of the solenoid 31 contracts, the clutch 34 slides away from the drive motor 21, and the right vertical plate 36 is coupled to the transmission gear 26. Therefore, the inner cylinder 11 of the valve member V can be rotated by the driving force of one drive motor 21 via the clutch mechanism Y, and the push-out operating body 18 incorporated in the inner cylinder 11 is reciprocated. Can do.

(11) Action of the fixed amount dispensing device If an operating means (start switch) (not shown) is operated, the operating rod 32 of the solenoid 31 contracts, for example. When the operating rod 32 moves to the right, the clutch 34 slides in the same direction and is coupled to the transmission gear 26.

  Therefore, when the drive motor 21 starts (forward rotation), the push-out operating body 18 moves backward to a predetermined position (a set value of the discharge amount) via the cylindrical screw body 27 that meshes with the transmission gear 26. One of the detecting means S2 for the operating body 18 detects the backward position of the pushing-out operating body. When the push-out actuating body 18 moves backward, the push-out actuating body 18 stops at a predetermined position, so that a predetermined amount of powder or solid matter b falls into the inner cylinder.

  Next, when the operating rod 32 of the solenoid 31 extends, the clutch 34 slides on the output shaft 22 in the same direction and is coupled to the drive gear 23. At this time, the engagement pin 35 a of the vertical plate 35 of the clutch 34 is engaged with the engaged portion 23 a of the drive gear 23.

  Therefore, when the drive motor 21 is activated, the inner cylinder 11 rotates a predetermined amount (for example, 180 degrees) via the driven gear 14 that meshes with the drive gear 23. At this time, the pushing operation body 18 rotates together with the inner cylinder 11. Since the engagement portion 19a at the rear end portion of the push-out operation body 18 is engaged with the recessed engagement portion 46 of the connection support tool 41, the push-out operation body 18 is in a stable state with the inner cylinder body. 11 and rotate. The rotational position of the inner cylinder 11 is detected by the detection means S1. When the inner cylinder 11 rotates by a predetermined amount, one inner valve opening 12 moves downward and communicates with the discharge port 6 of the outer cylinder 2 (see FIG. 18).

  Therefore, the powdery substance or solid substance b in the inner cylinder 11 starts to fall from the discharge port 6. At this time, the operating rod 32 of the solenoid 31 returns (shrinks), and the drive motor 21 can rotate in the reverse direction. Accordingly, the pusher 18 is advanced to a predetermined position by the transmission power of the transmission gear 26. As a result, the powder body or solid matter b in the inner cylinder 11 is all pushed out by the piston body 18a of the push-out operating body 18 (see FIG. 17). Thereafter, the operating rod 32 of the solenoid 31 extends. Then, since the driving force of the driving motor 21 is transmitted to the driving gear 23, the inner cylinder 11 rotates a predetermined amount again.

  As described above, the inner cylindrical body (inner valve) 11 is rotated by the driving force of the driving source 21 and takes in a predetermined amount of powder or solid matter b from the hopper 5 through the outer valve opening 3. And it discharges outside via the discharge port 6. On the other hand, the push-out operating body 18 reciprocates in the axial direction by the driving force of the driving source 21 through the clutch mechanism Y and the engagement / disengagement structure Z of the operating rod. Next, the engagement / disengagement structure Z of the operating rod will be described.

(12) Working rod engagement / disengagement structure Z
With reference to FIG. 14, the engagement / disengagement structure (hereinafter referred to as “engagement / disengagement structure Z”) of the operating rod of the quantitative discharge device will be described. The engagement / disengagement structure Z of the present invention is simply pointed out. The follower operating rod 19 of the valve member V that can be detached from the fixed side member 1 and the drive on the side of the drive source 21 disposed integrally with the fixed side member 1. This is a connection structure with the operating rod 20. In this embodiment, the valve member V itself is connected to the drive operating rod 20 of the fixed side member 1 so that it can be removed from the fixed side member 1. The reason why the valve member V itself is connected to the drive operating rod 20 and removed from the drive operating rod 20 is that the members constituting the valve member V are easy to disassemble. Therefore, the structural member can be cleaned.

  The connection support 41 is pivotally supported on the drive operating rod 20 in a “one-handed manner” while being constantly biased in a predetermined direction by the spring member 43. The specific structure of the connecting support 41 includes a left and right mounting pivot plate 44 having a pair of left and right shaft holes 44 a for the horizontal shaft 42 at the upper end, and a distal end portion of these pivot plates 44. The vertical plate portion 45 has a circular shape, and a catch-like locking portion 46 that is provided in a projecting state at the lower end of the front surface of the vertical plate portion 45. In addition, regarding the components of each part of the connection support 41 made of metal or hard resin, the left and right pivot plates 44 in the vertical state are respectively adapted to the left and right side walls of the tip of the drive operating rod 20. The vertical plate portion 45 has a vertical pressing surface 45a so that it can exert a sufficient pressing function with respect to the vertical tip surface of the driven moving rod 19. In addition, on the upper surface of the locking portion 46, an engagement recess 46a is formed to engage and disengage the engagement portion 19a formed in a trapezoidal shape such as a ball trapezoidal shape or a truncated cone shape. Further, a taper 46b is formed at the tip of the engaging recess 46a so as to be in sliding contact with the engaging portion 19a when connected. In addition, as shown in FIG. 15, a protruding spring support 47 is provided at the lower end of the inner surface of the vertical plate 45. Further, the inner surface of the vertical plate portion 45 is in contact with the upper end surface of the drive operating rod 18.

  In other words, the horizontal shaft 42 that pivotally supports the connection support 41 is located at the upper end of the mounting pivot plate, while the spring member 43 that urges the connection support 41 to the horizontal position is connected to the horizontal shaft 42. Located on the lower side of the support. One end of the spring member 43 is supported by the spring support 47 of the connection support 41, and the other end is attached to a spring end support 20 c projecting from the lower surface of the tip of the drive operating rod 20. .

  In the above configuration, when the valve member V is connected, when the valve member V is pushed into the taper 46 b of the locking portion 46 of the connection support 41, the connection support 41 is connected to the follower moving rod 19 of the valve member V. It is pressed by the taper of the engaging portion 19a and rotates in a direction in which the locking portion 46 is lowered with the horizontal shaft 42 as a fulcrum. When the engaging portion 19 a of the slave operating rod 19 slips over the taper 46 b of the connection support 41, the connection support 41 is restored by the spring force of the spring member 43. As a result, the engagement portion 19a of the valve member V is automatically locked to the dish-shaped locking portion 46 of the connection support 41. On the other hand, when removing the valve member V, for example, if the tip of the valve member V is lifted, the upper end of the vertical plate 45 of the connection support 41 is supported by the upper end surface of the drive operating rod 20. Or since the latching | locking part 46 is formed in the dish shape, the engagement relationship of the valve member V and the connection support tool 41 can be canceled easily. In FIG. 1, c is a cup.

  In FIG. 10, the piston main body (sliding portion) 18a is hollow. However, in the invention, the piston main body may be hollow or solid. In addition, as an example, the envelope seal 62 having a U-shaped cross section uses Teflon (registered trademark) which is employed in a polymer product of DuPont. Further, the piston body 18a of the push-out operating body 18 of the present embodiment has a thick fitting portion 52 on the tip surface thereof, while the fitting portion is provided on the tip portion side of the inner peripheral wall of the inner cylinder 11. Although a fitted portion 51 having a recess in cross section corresponding to the shape of 52 is provided, in claim 1, the fitted portion 52 and the fitted portion 51 are not essential matters of the invention. In addition, the invention described in claim 1 can also be applied to the quantitative discharge devices of Patent Document 1, Patent Document 2, and the like.

  Referring to FIG. 3, the inner valve opening 12 is formed in a long hole shape with respect to the circular outer valve opening 3. In other words, the inner valve opening 12 formed in a part of the peripheral wall of the inner cylinder 11 is formed in a long hole shape in the longitudinal direction on the distal end side of the inner cylinder 11. Thus, when the inner valve opening 12 is formed in the shape of a long hole, the size and shape of the fitted portion 51 must naturally correspond to the size and shape of the inner valve opening 12.

  Further, in the present embodiment, the fitted portion 51 having a concave cross section is integrally fixed to the distal end side of the inner peripheral wall of the inner cylindrical body 11, but as shown in FIG. 51 may be integrally formed on the inner peripheral wall of the inner cylinder 11. Furthermore, the shape of the to-be-fitted part 51 can also be formed in cross-sectional V shape, for example by the kind of a powdery thing or a solid substance. On the other hand, the shape of the protruding fitting portion 52 of the push-out operating body 18 can also be made into a single or a plurality of arm shapes depending on the type of powder or solid.

  Next, FIGS. 20 to 23 show a second embodiment of the present invention. The second embodiment is mainly different from the first embodiment in that the ring-shaped presser 65A of the push-out operating body 18A is not screwed into the piston main body 18a but a driven rod (piston rod) 19. It is.

  In other words, a male screw 66 is formed at the root portion corresponding to the mounting portion of the slave rod (piston rod) 19, and a ring-shaped presser 65 </ b> A having a female screw 67 that engages with the male screw 66 at the center is attached to the slave rod. The point provided in the (piston rod) 19 is different from the push-out operation body 18 of the first embodiment.

  Therefore, in the second embodiment, a stepped notch 63 is provided around the rear end of the piston body 18a of the push-out actuating body 18A, and the notch is pressed against a vertical wall 63a on which the tip side forms the notch. An encircling seal 62 having a U-shaped cross section, which houses a possible elastic ring 61, is fitted, and on the other hand, a ring shape that is screwed into a male screw 66 formed at the root portion of a driven rod (piston rod) 19 of the push-out operating body 18A. The presser 65A is provided on the follower moving rod, and the presser 65A is screwed to press the vertical rear end face 62a of the surrounding seal 62 with the front face 68 of the peripheral end of the presser. The peripheral wall portion 62b is inclined outwardly expanded so that the front end surface of the peripheral wall portion 62b of the surrounding seal 62 can slightly protrude from the outer peripheral surface of the piston body 18a by utilizing elastic deformation. It was.

  Thus, even if the design of the first embodiment is changed, the intended object and effect of the present invention can be obtained. Note that the front surface 68 of the circumferential end portion of the ring-shaped presser 65A is provided with a slightly protruding wall shape on the front side, and the protruding wall has a vertical rear end surface 62a of the surrounding seal 62 having a U-shaped cross section. This is not necessary when a required amount protrudes from the rear end face of the piston body 18a.

  The present invention is mainly manufactured in the pump industry, and is used in the service industry such as foods that are provided to customers by dividing liquids, powders, solids, and the like.

1 to 18 are explanatory views showing a first embodiment of the present invention. FIG. 19 is an explanatory view showing another embodiment of the inner cylinder 11, and FIGS. 20 to 23 are explanatory views showing a second embodiment of the present invention.
Schematic cross-sectional explanatory drawing of a fixed-quantity discharge device (for example, a state in which the push-out operating body has advanced to the front wall of the inner cylinder and solids in the inner cylinder have been discharged). Explanatory drawing of the main part (state where the push-out operating body in the inner cylinder is retracted to the origin position) The exploded perspective view of the principal part (the rear end part of an inner cylinder is omitted). 4 is a schematic cross-sectional view taken along line 4-4 of FIG. FIG. 5 is a schematic sectional view taken along line 5-5 in FIG. 3; 3 is a schematic cross-sectional view taken along line 6-6 in FIG. Schematic sectional view taken along line 7-7 in FIG. The perspective view which shows the to-be-fitted part of an inner cylinder body. FIG. 9A is a front view of the extrusion operating body, and FIG. 9B is a right side view of the extrusion operating body. The schematic cross-section explanatory drawing of the characteristic matter (sealing structure of an extrusion action body) of the present invention. The disassembled perspective view of the principal part (seal member). FIG. 12A is an explanatory view in which a seal member 60 is fitted in a notch portion. FIG. 12B is an explanatory diagram in which the presser 65 is screwed. FIG. 13A and FIG. 13B are explanatory diagrams of a state in which the presser 65 is screwed. The perspective view of an extrusion operation body, the rear end part of an inner cylinder, and a connection support shaft in an inner cylinder. The schematic explanatory drawing (front view) of the principal part. The schematic explanatory drawing (plan view) of the principal part. Schematic cross-sectional explanatory drawing of the action (particularly showing the movement of the push-out actuator). Schematic cross-sectional explanatory drawing of the action (particularly showing the rotational state of the inner cylinder). FIG. 19A and FIG. 19B are explanatory views showing another embodiment of the inner cylinder 11. Explanatory drawing of the pushing action | operation body 18A of 2nd Example (state which clamped 65A of clamps). Explanatory drawing of the holding tool 65A. Schematic explanatory drawing before clamping the pressing tool 65A. Explanatory drawing which shows the principal part of the state which clamped the pressing tool 65A. X ... quantitative discharge device, Y ... clutch mechanism, 1 ... fixed side member, V ... valve member, 2 ... outer cylinder, 3 ... outer valve opening, 5 ... hopper, 6 ... discharge port, 7 ... sealing structure, 8 ... Inner peripheral support surface, b ..., liquid, powder, solid, etc. 11 ... inner cylinder, 12 ... inner valve opening, 14 ... driven gear, 18, 18A ... push-out actuator, 18a ... piston body (sliding) Portion), 17a ... support member, 19 ... following moving rod, 19a ... engagement portion, 20 ... drive actuation rod, 20a ... screw portion, 20b ... engagement portion, 20c ... spring end support portion, 21 ... drive motor, 22 DESCRIPTION OF SYMBOLS ... Output shaft, 23 ... Drive gear, 26 ... Transmission gear, 27 ... Cylindrical screwing body, 31 ... Drive means (solenoid), 34 ... Clutch, 37 ... Anti-rotation stand, 41 ... Connection support tool, 42 ... Horizontal shaft, 43 ... Spring member 51 ... Fitted portion 51a ... Opening portion 51b ... Non-opening portion 52 Fitting part, 53 ... opening, 60 ... elastic seal member, 61 ... elastic ring, 62 ... enveloping seal, 62a ... vertical rear end face, 62b ... peripheral wall part, 63 ... notch part, 63a ... vertical wall surface, 64 ... male screw, 65, 65A ... Presser.

Claims (3)

The valve member includes an outer cylinder as an outer valve, an inner cylinder as an inner valve rotatably incorporated in the outer cylinder, and a push-out operating body in which a piston body is incorporated in the inner cylinder. On the other hand, the drive source side is provided with a drive operating rod that moves horizontally by being guided by the support member and by the force of the driving source, and when the follower operating rod of the valve member and the drive operating rod on the drive source side are connected. An engaging portion of the operating rod that engages and disengages with a connecting support attached to the driving operating rod, and the inner cylinder is rotated by the driving force of the driving source. In the metering discharge device with a valve member on the premise that the valve member push-out actuating body can be removed from the drive actuating rod, a stepped notch is formed at the rear end portion of the piston body of the push-out actuating body. Rotate the part around and place a male screw on the rear end face of the notch. An enclosed seal having a U-shaped cross section, which includes an elastic ring whose front end is capable of being pressed against a vertical wall surface forming the notched portion, is fitted to the notched portion, and the vertical rear end surface of the enclosed seal is fitted to the male screw. Screwed with a ring-shaped presser screwed into the ring, and the peripheral wall portion is inclined so that the distal end surface of the peripheral wall portion of the surrounding seal can be slightly protruded from the outer peripheral surface of the piston body using the elastic deformation of the elastic ring. A fixed-quantity discharge device using a valve member characterized in that it is displaced outwardly. In claim 1, a fitting portion 52 that is fitted to a fitted portion provided on the inner peripheral wall of the inner cylindrical body protrudes from the tip surface of the piston body 18a, and the lower end surface of the fitting portion 52 is A metering discharge device using a valve member, which is located radially inside the lower end surface of the piston body 18a. The valve member includes an outer cylinder as an outer valve, an inner cylinder as an inner valve rotatably incorporated in the outer cylinder, and a push-out operating body in which a piston body is incorporated in the inner cylinder. On the other hand, the drive source side is provided with a drive operating rod that moves horizontally by being guided by the support member and by the force of the driving source, and when the follower operating rod of the valve member and the drive operating rod on the drive source side are connected. An engaging portion of the operating rod that engages and disengages with a connecting support attached to the driving operating rod, and the inner cylinder is rotated by the driving force of the driving source. In the metering discharge device with a valve member on the premise that the valve member push-out actuating body can be removed from the drive actuating rod, a stepped notch is formed at the rear end portion of the piston body of the push-out actuating body. Around the notch, the tip side forms the notch A ring-shaped ring that fits an enclosed seal with a U-shaped cross-section that houses an elastic ring that can be pressed against a vertical wall, and is screwed into a male thread formed at the root of the driven rod (piston rod) of the push-out actuator By pressing the vertical rear end face of the surrounding seal with the front face of the peripheral end of the presser by screwing the presser, using the elastic deformation of the elastic ring. A quantitative discharge device using a valve member, wherein the peripheral wall portion is inclined and expanded outward so that the front end surface of the peripheral wall portion of the surrounding seal can slightly protrude from the outer peripheral surface of the piston body.

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