WO2020187203A1 - 流体排放系统及其挤推器 - Google Patents

流体排放系统及其挤推器 Download PDF

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Publication number
WO2020187203A1
WO2020187203A1 PCT/CN2020/079699 CN2020079699W WO2020187203A1 WO 2020187203 A1 WO2020187203 A1 WO 2020187203A1 CN 2020079699 W CN2020079699 W CN 2020079699W WO 2020187203 A1 WO2020187203 A1 WO 2020187203A1
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WIPO (PCT)
Prior art keywords
pressure
base
pusher
gear
mounting bracket
Prior art date
Application number
PCT/CN2020/079699
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English (en)
French (fr)
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上海鸿研物流技术有限公司
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Publication date
Application filed by 上海鸿研物流技术有限公司 filed Critical 上海鸿研物流技术有限公司
Publication of WO2020187203A1 publication Critical patent/WO2020187203A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D25/00—Details of other kinds or types of rigid or semi-rigid containers
    • B65D25/38—Devices for discharging contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D35/00—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor
    • B65D35/24—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices
    • B65D35/28—Pliable tubular containers adapted to be permanently or temporarily deformed to expel contents, e.g. collapsible tubes for toothpaste or other plastic or semi-liquid material; Holders therefor with auxiliary devices for expelling contents
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D77/00—Packages formed by enclosing articles or materials in preformed containers, e.g. boxes, cartons, sacks or bags
    • B65D77/04—Articles or materials enclosed in two or more containers disposed one within another
    • B65D77/06—Liquids or semi-liquids or other materials or articles enclosed in flexible containers disposed within rigid containers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/16—Large containers flexible
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
    • B65D88/00—Large containers
    • B65D88/54—Large containers characterised by means facilitating filling or emptying

Definitions

  • the utility model relates to the field of logistics transportation, in particular to a liquid, especially a transportation and discharge system for viscous liquid.
  • the foreign patent IL156984A discloses a sealed bag liquid. Its main part is a sealed soft container made of PVC coated cloth or PE film by hot melt welding or high-frequency welding; the two ends of the sealed soft container are set separately There are an inlet valve and an outlet valve; the main body also includes an auxiliary discharge air bag, and the air bag is provided with an air inlet for inflation. In the process of liquid discharge, it is necessary to inflate the auxiliary air bag, and discharge the more viscous liquid by the squeeze of the gas. This solution cannot fundamentally solve the problem of liquid residue, and it also needs to assist in inflation, which increases costs.
  • the foreign patent WO2011080402A1 discloses a liquid squeezing device to squeeze viscous liquids. Before squeezing, the sealed liquid bag must be suspended, and then according to the pushing process, the suspended liquid bag is gradually pulled up. The extrusion is gradually completed.
  • the extrusion equipment has huge cost and space and complicated operation, which is time-consuming, low in efficiency, and difficult to operate.
  • the purpose of the utility model is to provide a fluid discharge system and its pusher that are simple and convenient to operate and reduce the probability of accidentally damaging the inner liner bag or the pusher.
  • the present invention provides a pusher, the pusher includes a pair of rollers, a driving device and a mounting bracket, wherein the pair of rollers are rotatably mounted on the mounting bracket, Each of the rollers has mounting parts at both ends and a pressing section between the mounting parts, and the pair of rollers can operably clamp the clamped object between the pressing sections and
  • the driving device can be rotated in a relative reverse direction to apply a pushing force to the clamped object.
  • the pushing device further includes a pressure detecting device and a control device, wherein the control device and the The driving device is electrically connected to the pressure detection device, and is arranged so that when the pressure received by the pusher exceeds a predetermined value, the pressure detection device can transmit a signal to the control device to control the driving Device action.
  • the pressure detection device is arranged on the lower side of the mounting bracket.
  • the pressure detection device has a pressure sensor or a contact switch.
  • the pressure detection device includes a pressure sensor arranged to detect the pressure value received by the mounting bracket and transmit the pressure value to the control device to control the action of the driving device.
  • action refers to speed adjustment, start, stop, etc.
  • the pressure detection device includes a contact switch, the contact switch is arranged to act when the pressure received by the mounting bracket exceeds a predetermined value, so that the driving device stops working, and the contact switch is Reset when the pressure is less than the preset value.
  • the pressure detection device includes a pressure base, the pressure base is movably mounted on the mounting bracket, and the contact switch is mounted on the mounting bracket and is in contact with the pressure base.
  • the mounting bracket includes a mounting bracket including a rear base, a support frame, and a front base, the rear base is connected to the front base through the support frame, and the pressure base is rotatably Installed on the front base.
  • a spring is provided between the pressure base and the front base.
  • the pressure base has a plate-shaped main body, two arms extend from both sides of the upper surface of the plate-shaped main body, and a rotating shaft is connected between the two arms; the front base is provided with There is a pressure base mounting hole, the pressure base is accommodated in the pressure base mounting hole and is rotatably connected to the front base through the rotating shaft, and at least a part of the pressure base exposes the pressure base Mounting hole.
  • the plate-shaped main body is provided with limiting ribs on both sides
  • the front base is provided with a limiting hanging platform
  • the limiting ribs are hung on the limiting hanging platform.
  • the pressure detection device includes a force plate and a pressure sensor, and the force plate is movably installed on the mounting bracket and connected with the pressure sensor.
  • the mounting bracket includes a rear base, a support frame, and a front base, the rear base is connected to the front base through the support frame, and the pressure sensor is installed on the front base On the inner side, the front base' is provided with mounting holes, and the stress plate is movably installed on the outer side of the front base and connected with the pressure sensor.
  • the squeezing section includes a support shaft and an elastic body provided to wrap the support shaft.
  • the driving device includes a motor and a control box, and the control box is electrically connected to the motor and arranged to be able to control the forward and reverse rotation and the rotation speed of the motor.
  • the motor is arranged such that at least a part of its projection in the direction perpendicular to the axis of the roller coincides with the projection of the roller in the direction perpendicular to the axis of the roller.
  • the driving device further includes a gearbox, wherein the output shaft of the motor is connected to the gearbox and extends in a direction perpendicular to the roller shaft.
  • the driving device further includes a gearbox having a housing and a fixed plate fixedly connected to the housing, and a first gear is rotatably mounted on the fixed plate and connected to the output of the motor
  • a second gear meshing with the first gear is rotatably mounted on the fixed plate, and the second gear is connected to a first worm through a transmission shaft, and the first worm is rotatably connected to
  • the first worm gear in the housing meshes with a second worm gear rotatably installed in the housing, and the second worm gear meshes with a second worm gear rotatably installed in the housing Meshing
  • the second worm gear is fixedly connected with one roller of the pair of rollers, the roller is connected with a third gear, and the other roller of the pair of rollers is connected with a fourth gear, the The third gear meshes with the fourth gear.
  • the motor is provided with a motor shaft
  • the first gear is provided with a mounting hole
  • the motor shaft is fixed by the mounting hole of the first gear and the first gear.
  • the present application also provides a fluid discharge system, including a container and a liner bag, the liner bag is provided with a discharge port and installed in the container.
  • the fluid discharge system further includes the above-mentioned pusher, wherein the pair of rollers can operably clamp the liner bag between the squeezing sections and can be reversed by the driving device. Rotate to apply squeezing force to the liner bag.
  • the pusher of the utility model is easy to operate, can make the discharge residue very little, and can stop or start the extrusion according to the data detected by the pressure sensor, and can facilitate correction and avoid accidental damage when an abnormality occurs. Lined bag.
  • Fig. 1 is a front perspective view of the pusher of the present application.
  • Fig. 2 is a perspective view from the back of the pusher of the present application.
  • Figure 3 is an exploded view of the pusher of the present application.
  • Fig. 4 is a perspective view of the transmission mechanism of the gearbox of the present application.
  • Fig. 5 is a side view of the control box of the pusher of the present application.
  • Fig. 6 is a top view of the control box of the pusher of the present application.
  • Fig. 7 is an exploded view of the pressure detection device of the present application.
  • Fig. 8 is a perspective view of the pressure detection device of the present application after being assembled.
  • Fig. 9 is an exploded view of the pressure detection device of the present application when viewed from another perspective.
  • Fig. 10 is a perspective view of the pressure detection device of the present application when it is assembled and viewed from another perspective.
  • Fig. 11 is a cross-sectional view of the pusher of the present application taken along the direction perpendicular to the roller axis at the position where the pressure detection device is provided, wherein the pressure detection device is in an untriggered state.
  • Fig. 12 is a cross-sectional view of the pusher of the present application taken along the direction perpendicular to the roller axis at the position where the pressure detection device is provided, wherein the pressure detection device is in a triggered state.
  • Fig. 13 is an exploded view of a pusher according to another embodiment of the present invention, in which the pressure detection device is different from the embodiment shown in Figs. 1-10.
  • Fig. 14 is a perspective view of the pusher of Fig. 13.
  • Figures 15 and 16 are diagrams of the use state of the fluid discharge system using the pusher of the present application.
  • IBC container Composite medium-sized bulk container
  • IBC container is a type of packaging turnover container widely used in the food, biochemical, pharmaceutical, chemical and other industries on an international scale. Since the IBC container can be reused many times, it has obvious advantages in filling, storage and transportation, and compared with the drum, the IBC container can save 35% of the storage space, and the size conforms to the ISO standard. It is not only suitable for aseptic canning, but also has a compact box body, which is convenient for safe and efficient storage in large quantities. Therefore, it is widely used in the transportation, packaging and storage of liquid, granular and flake materials. At present, there are three existing specifications of 820L, 1000L and 1250L. Under normal circumstances, its composition structure includes plastic liner (lined bag), filling port, discharge device (valve or simple discharge port, etc.), side plate, base and Cover plate.
  • the squeezer of the present invention includes at least a pair of squeezing members, such as at least two rollers.
  • the two rollers When the liquid in the inner liner bag needs to be discharged, the two rollers are clamped to the inner liner bag.
  • the pair of squeezing members move relative to each other.
  • the two rollers rotate in opposite directions to exert a squeezing force on the liner bag, thereby squeezing the liquid in the liner bag.
  • the two rollers are driven by the driving device to automatically drop with the liquid level and push the liquid.
  • squeezing force refers to the force that exerts squeezing and pushing effects on the object of force, such as the liner bag and the liquid contained in it.
  • the pusher 1 includes a pair of rollers 10, a driving device 20 and a mounting bracket 30.
  • the roller 10 is rotatably mounted on the mounting bracket 30.
  • the driving device 20 includes a motor 21, a gearbox 22 and a control box 26.
  • the output shaft of the motor 21 is connected to the input end of the gearbox 22.
  • the output end of the gearbox 22 is connected to one of the rollers 10.
  • a pair of rollers 10 are associated, so that the rotation of one roller can drive the other roller to rotate correspondingly.
  • the control box 26 is electrically connected to the motor 21 and arranged to be able to control the forward and reverse rotation and the rotation speed of the motor 21. As a result, the pair of rollers 10 rotate forward or reverse accordingly.
  • the motor 21 may be a constant torque stepper motor or a stepper motor.
  • the constant torque stepper motor is used, no matter how the motor speed changes, the torque of the pusher remains unchanged, which eliminates the situation that the general motor has insufficient torque after the speed is reduced, and the push does not rotate.
  • the roller 10 has mounting parts 11 at both ends and a pressing section 12 between the mounting parts 11.
  • the mounting portion 11 and the extrusion section 12 are formed as one body, but they can also be formed separately and then assembled together.
  • the roller 10 is a long rod-shaped member, the dimension in the axial direction is much larger than the dimension in the radial direction, and the length of the mounting portion 11 is much smaller than the length of the extrusion section 12.
  • the squeezing section 12 is used to contact the bag body of the inner liner bag 101 (as shown in FIG. 15), thereby squeezing the bag body, which will be described in detail below.
  • the roller 10 includes a support shaft 13 and an elastic body 14 provided to wrap the support shaft.
  • the mounting portion 11 is formed as a part of the support shaft 13.
  • the elastic body is an elastic soft body made of rubber, resin or other polymer elastic materials.
  • the elastic body is cylindrical and has an internal cavity with an inner diameter that matches the outer diameter of the support shaft.
  • the support shaft extends into the inner cavity of the elastic body.
  • the outer surface of the support shaft can be treated with glue.
  • the elastic body is wrapped and adsorbed on the entire outer surface of the supporting shaft, so that the elastic body rotates synchronously when the supporting shaft rotates under the driving of the driving device.
  • the elastic body is integrated with the support shaft by injection molding.
  • the elastic body of the roller 10 may also have other shapes, such as an ellipse, a triangle, or a square.
  • the support shaft is substantially cylindrical, that is, its outer diameter does not change substantially along the axial direction, while the outer diameter of the elastic body changes uniformly along the axial direction, thereby forming a tapered elastic body.
  • the outer diameter of the elastic body may not change substantially along the axial direction, or only a part thereof may be uniformly changed along the axial direction.
  • the mounting bracket 30 includes a rear base 31, two support frames 32 and front bases 33 and 34.
  • the rear base 31 is composed of two sub-bases 310 and a locking structure.
  • the locking mechanism is used for releasably locking the two sub-bases.
  • the two support frames 32 connect the rear base 31 with the front bases 33 and 34 into one body, that is, the two ends of the support frame 32 are connected to the rear base 31 and the front base 33 respectively.
  • the thickness of the rear base 31 and the front base 33 is set to be as small as possible to make the pressing section as long as possible.
  • the cross-sectional shape of the support frame can be C-shaped or adopt other shapes and structures of protective devices, as long as it can at least surround the outer side of the roller, so that during the pushing process of the pusher, the outer side of the roller and the clamped object Just separate.
  • each of the two rollers is connected to a corresponding sub-base 310.
  • One of the rear bases 31 is provided with a through hole, and the other is provided with a screw hole.
  • the locking wrench 314 is screwed into the screw hole through the through hole to operably lock the pair of rollers 10, and vice versa.
  • the screw holes can be through holes or blind holes.
  • the above-mentioned through hole, screw hole and locking wrench constitute the above-mentioned locking mechanism.
  • the locking mechanism can also adopt other methods, such as locking by snaps.
  • the front bases 33 and 34 are detachably mounted to both sides of the gearbox housing 25, respectively.
  • the front bases 33 and 34 are respectively connected to one end of the two support frames.
  • the support shaft of one of the pair of rollers 10 is connected to the output shaft of the gearbox 22 through the mounting part 11, and the other mounting part 11 is rotatably mounted in the front base 33.
  • the mounting parts of the two rollers are also respectively connected with a third gear 15 and a fourth gear 16, which can mesh with each other, so that the rotation of one roller can drive the other roller to rotate in the opposite direction.
  • the two ends of the roller are respectively received in the rear base 31 and the front bases 32, 33, so that the end of the elastic body will not contact the clamped object (such as the inner bag 101) during the pushing process. Therefore, the elastic body will not fall off during the pushing process.
  • the motor 21 can be located above, below or on the side of the roller. Preferably, the motor is arranged such that at least a part of its projection in the direction perpendicular to the axis of the roller coincides with the projection of the roller in the direction perpendicular to the axis of the roller.
  • the electric motor 21 is arranged above the gearbox 22 and its output shaft is connected to the gearbox 22 and extends upward from the gearbox 22 (ie vertically or diagonally upward).
  • the outer cover 24 of the motor 21 also extends upward from the gearbox 22. Therefore, the motor 21 itself and its outer cover are unlikely to increase the total length of the pusher, so that the effective length of the extrusion section (that is, the length that can participate in the extrusion) is longer.
  • the motor 21 may also be arranged below the gearbox 22 and its output shaft is connected to the gearbox 22 and extends downward from the gearbox 22 (that is, vertically or diagonally downward).
  • the motor housing 24 also extends downward from the gearbox 22.
  • the gearbox 22 has a housing 25 and a fixing plate 221 fixedly connected to the housing.
  • the first gear 222 is rotatably mounted on the fixed plate 221 and connected with the output shaft of the motor.
  • a second gear 223 meshing with the first gear 222 is also rotatably mounted on the fixed plate 221.
  • the second gear 222 is connected to the first worm 225 through the transmission shaft 224.
  • the first worm 225 meshes with the first worm wheel 226 rotatably connected to the housing.
  • the first worm gear 226 meshes with a second worm 227 rotatably installed in the housing.
  • the second worm 227 meshes with a second worm wheel 228 rotatably installed in the housing.
  • the second worm wheel 228 is fixedly connected to one roller 10 of the pair of rollers.
  • the roller 10 is connected with a third gear 15.
  • the other roller of the pair of rollers is connected with a fourth gear 16.
  • the third gear 15 and the fourth gear 16 mesh, so that the rotation of one roller can drive the other roller to rotate in the opposite direction.
  • the motor 21 has a first mounting hole 211.
  • the fixing plate 221 is provided with a second mounting hole.
  • the bolt passes through the first mounting hole and the second mounting hole to fix the motor 21 to the fixing plate 221.
  • the motor is provided with a motor shaft.
  • the first gear is provided with a mounting hole.
  • the motor shaft is fixed to the first gear through the mounting hole of the first gear.
  • the first gear drives the second gear to rotate.
  • the second gear drives the first worm to rotate.
  • the first worm drives the first worm wheel to rotate.
  • the first worm wheel drives the second worm to rotate.
  • the second worm drives the second worm wheel to rotate.
  • the second worm gear is connected with the axis of a roller and drives the roller to follow the rotation.
  • the third gear connected with the roller also rotates and drives the fourth gear connected with the other roller to rotate.
  • the pair of rollers move in opposite directions through the cooperation of the third gear and the fourth gear.
  • the control box 26 has an outer cover 261 and a hanging plate 262 provided on one side of the outer cover.
  • the hanging plate 262 extends outward from one side of the outer cover 261 and then extends downward. When in use, the hanging plate 262 can be hung on the side plate of the container.
  • a control button 263 is provided on the outside of the control box 26, which is used to control the speed of the motor and the forward and reverse actions.
  • the control button 263 is provided on the top of the outer cover.
  • the control button 263 may include, for example, a gear button 264, a forward and reverse button 265, and an emergency stop button 266.
  • the control box 26 can also be provided with a power indicator light 267 and an emergency stop indicator light 268.
  • the control box 26 includes a programmable controller.
  • the programmable controller is electrically connected to the motor, so as to control the operation of the motor, such as rotation speed or forward and reverse rotation.
  • a pressure detection device 200 is installed on the front base 33.
  • the pressure detection device has a pressure base 40 and a contact switch 50.
  • the pressure base 40 is rotatably mounted on the front base 33.
  • the contact switch 50 is installed on the front base 33 and can be in contact with the pressure base 40.
  • the contact switch 50 is provided with a contact spring 51. When the pressure value received by the pusher exceeds the set value, the contact spring 51 acts, so that the contact switch 50 operates and sends a signal to control the action of the driving device, such as stopping, starting, accelerating or decelerating.
  • the pressure base 40 has a plate-shaped body 41.
  • a driving surface 42 is provided in the middle of the plate-shaped main body 41.
  • Compression spring holes 43 are provided on both sides of the driving surface 42.
  • a compression spring 61 is installed in the compression spring hole 43.
  • Limiting ribs 44 are provided on both sides of the plate-shaped main body 41.
  • Two arms 45 extend from both sides of the upper surface of the plate-shaped body.
  • a rotating shaft 46 is connected between the two support arms 45.
  • the front base 33 has a substantially U-shaped housing 331.
  • a pressure base mounting hole 332 is provided on a side wall of the housing 331.
  • a limit hanging platform 337 is provided on both sides of the pressure base mounting hole 332.
  • a boss 333 extends upward from the inner side of the bottom wall of the housing 331.
  • a threaded hole 334 is provided on the boss 333.
  • the contact switch 50 is provided with an installation through hole 52. The screw passes through the installation through hole 52 and the threaded hole 334 to fix the contact switch 50 on the boss 333.
  • a rotating groove 335 located inside the boss 333 is also formed inside the bottom wall of the housing.
  • the rotating shaft 46 of the pressure base 40 is rotatably installed in the rotating groove 335.
  • the pressure base 40 When assembling, the pressure base 40 is rotatably clamped into the rotation groove 335 through the rotation shaft 46, and the pressure base can rotate around the rotation shaft.
  • the pressure base 40 is accommodated in the pressure base mounting hole 332 and at least partially exposes the pressure base mounting hole 332.
  • the limiting rib 44 is hung on the limiting hanging platform 337.
  • the contact switch is fixed on the boss 333, and the contact elastic piece on it abuts against the driving surface 42.
  • the compression spring 61 is located between the boss 333 and the pressure base, so as to provide the pressure base 40 with a restoring force. Under the action of the compression spring, the pressure base 40 can rotate when a force is applied, and rebound and reset when the force is cancelled.
  • the limiting rib 44 on the pressure base 40 and the limiting hanger 336 on the front base 33 cooperate to form a limit on the rotation angle, and prevent the pressure base from being separated from the front base 33.
  • the squeezing speed is greater than the pumping speed of the pump, and the lining will be compressed by the squeezer.
  • the pressure device will be compressed by the reaction force of the lining to produce action, and the pressure base on the pressure device will rotate Drive the contact shrapnel of the contact switch.
  • the deformation of the contact shrapnel causes the contact switch to generate a signal, which is transmitted to the control box.
  • the control box signal controls the stop of the electric motor and the pusher stops rotating, as shown in Figure 12.
  • FIGS. 13-14 are a pusher 1'of another embodiment of the present invention.
  • the pressure detection device is different from the embodiment shown in FIGS. 7-12, and the rest is basically the same.
  • the pressure detection device includes a force plate 70 and a pressure sensor 80.
  • the pressure sensor 80 is installed inside the front base 33'.
  • a mounting hole 331' is provided on the front base 33'.
  • the force receiving plate 70 is movably installed on the outside of the front base 33 ′ and connected to the pressure sensor 80, so that the force receiving plate will receive pressure and transmit the pressure to the pressure sensor 80.
  • the pressure detection device may also be installed in other places of the mounting bracket, such as the rear base or the support frame.
  • the force plate will receive the force of the lining being squeezed by the squeezer.
  • the pressure sensor signal is transmitted to the control box, and the control box signal controls the stop of the electric motor of the driving device, and the pusher stops rotating.
  • the control box signal controls the stop of the electric motor of the driving device, and the pusher stops rotating.
  • the fluid discharge system may include a container 100, a liner bag 101, and a pusher 1.
  • the container 100 is generally a medium-sized bulk container.
  • the liner bag 101 is provided with a discharge port and installed in the container 100.
  • the liner bag 101 is first clamped in a pair of rollers 10 (as shown in FIG. 15).
  • the pair of rollers 10 of the pusher are first loosened by a locking wrench, and then the upper part of the liner bag 101 is clamped on the pusher 1 of the container 100, and then the pair of rollers 10 Lock tightly.
  • the driving device 20 is activated.
  • the pair of rollers 10 of the pusher rotates downwards and in opposite directions and squeezes the bag body of the inner liner bag 101, thereby affecting the inner liner bag 101
  • the liquid is squeezed so that the liquid is discharged from the discharge port.
  • the pair of rollers 10 are driven by the driving device 20 to automatically drop with the liquid level and push the liquid.
  • the squeezing speed is greater than the pumping speed of the pump, and the lining will be compressed by the squeezer.
  • the pressure device will be compressed by the reaction force of the lining to produce action, and the pressure base on the pressure device will rotate Drive the contact shrapnel of the contact switch.
  • the deformation of the contact shrapnel causes the contact switch to generate a signal.
  • the signal is transmitted to the control box.
  • the control box signal controls the stop of the motor and the pusher stops rotating, as shown in Figure 16.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Infusion, Injection, And Reservoir Apparatuses (AREA)
  • Press Drives And Press Lines (AREA)
  • Package Closures (AREA)

Abstract

一种流体排放系统及其挤推器。挤推器（1）包括一对滚轴（10）、驱动装置（20）和安装支架（30），其中一对滚轴（10）可转动地安装于安装支架（30），每个滚轴（10）具有位于两端的安装部（11）和位于安装部（11）之间的挤压段（12），一对滚轴（10）能够可操作地将被夹持物夹持在挤压段（12）之间并且能够通过驱动装置（20）作相对反向转动，以对被夹持物施加挤推力，挤推器（1）进一步包括压力检测装置（200）和控制装置，其中控制装置同时与驱动装置（20）和压力检测装置（200）电连接，并布置成使得在挤推器（1）受到的压力超出预定值时，压力检测装置（200）能够将一信号传递给控制装置，以控制驱动装置（20）动作。这种流体排放系统及其挤推器，液体排放残留少，操作便利，且降低意外损坏内衬袋的概率。

Description

流体排放系统及其挤推器
相关申请交叉引用
本专利申请要求于2019年03月20日提交的、申请号为201910213276.0、发明名称为“流体排放系统及其挤推器”的中国专利申请的优先权，上述申请的全文以引用的方式并入本文中。
技术领域
本实用新型涉及物流运输领域，具体涉及液体，尤其是粘稠液体的运输和排放系统。
背景技术
为了粘稠性液体储存，运输及灌装排放等，目前市场上有很多液体储运装置。
国外专利US5765723A，公开了一种密封液袋，它的主体部分是采用PVC涂塑布通过热熔焊接或高频焊接制成的密封软体容器；该密封软体容器的两端分别设置有进液阀门和出液阀门。该液体内衬本体在一般高流速，流质液体中使用效果比较好；但是在粘稠液体的排放中，液体排放慢，效率低；排放完成后液体在内衬本体中残留大，造成成本浪费。一般在排放快结束时会用螺旋缠绕挤压等外在物体让此内衬本体缠绕挤出残留的液体。
国外专利IL156984A，公开的一种密封袋液，它的主体部分是采用PVC涂塑布或PE膜，通过热熔焊接或高频焊接制成的密封软体容器；该密封软体容器的两端分别设置有进液阀门和出液阀门；主体还包括辅助排放的气袋，气袋上设置有充气的进气口。液体排放过程中，需要往辅助的气袋中充气，靠气体的挤压来排放较粘稠的液体。此方案不能根本解决液体残留问题，并且还要辅助充气，增加成本。
国外专利US2015284181A1，公开的一种密封袋液，的主体部分是采用PVC涂塑布或PE膜，通过热熔焊接或高频焊接制成的密封软体容器；排放粘稠液体的时候，会将运输液体的中型散装容器利用机械机构，使中型散装容器底部产 生倾斜，排放口处于最低点。这种操作比较费时，效率低，不易操作，排放后内衬本体粘稠液的残留比较严重，会造成资源的浪费。
国外专利WO2011080402A1，公开了一种液体挤压装置，来进行粘稠液体的挤压，在挤压前必须将密封液袋进行悬挂，然后根据挤推的进行，悬挂的液袋逐渐被拉高，挤压逐渐完成。此挤压设备成本及空间巨大，操作复杂，这种操作比较费时，效率低，不易操作。
实用新型内容
本实用新型的目的是提供一种操作简单便利，并且降低意外损坏内衬袋或者挤推器概率的流体排放系统及其挤推器。
为实现上述目的，本实用新型提供了一种挤推器，所述挤推器包括一对滚轴、驱动装置和安装支架，其中所述一对滚轴可转动地安装于所述安装支架，每个所述滚轴具有位于两端的安装部和位于所述安装部之间的挤压段，所述一对滚轴能够可操作地将被夹持物夹持在所述挤压段之间并且能够通过所述驱动装置做相对反向转动，以对所述被夹持物施加挤推力，其特征在于，所述挤推器进一步包括压力检测装置和控制装置，其中所述控制装置同时与所述驱动装置和所述压力检测装置电连接，并布置成使得在所述挤推器受到的压力超出预定值时，所述压力检测装置能够将一信号传递给所述控制装置，以控制所述驱动装置动作。
一实施例中，所述压力检测装置布置于所述安装支架的下侧。
一实施例中，所述压力检测装置具有压力传感器或接触开关。
一实施例中，所述压力检测装置包括压力传感器，所述压力传感器布置成检测所述安装支架所受到的压力值并将该压力值传递给所述控制装置，以控制所述驱动装置动作。这里，动作指的是速度调节、启动、停止等。
一实施例中，所述压力检测装置包括接触开关，所述接触开关布置成在所述安装支架受到的压力超过预定值时动作，使得所述驱动装置停止工作，并在所述安装支架受到的压力小于预定值时复位。
一实施例中，所述压力检测装置包括压力基座，所述压力基座可动地安装于所述安装支架，所述接触开关安装于所述安装支架上并且与所述压力基座接触。
一实施例中，所述安装支架包括安装支架包括后基座、支撑架和前基座，所述后基座通过所述支撑架连接于所述前基座，所述压力基座可转动地安装于所述前基 座。
一实施例中，所述压力基座与所述前基座之间设有弹簧。
一实施例中，所述压力基座具有板状主体，所述板状主体的上表面的两侧延伸出两个支臂，两个支臂之间连接有旋转轴；所述前基座设有压力基座安装孔，所述压力基座容纳于所述压力基座安装孔并通过所述旋转轴可转动地连接于所述前基座，且所述压力基座至少一部分露出该压力基座安装孔。
一实施例中，所述板状主体的两侧设有限位筋，所述前基座设有限位挂台，所述限位筋挂靠于所述限位挂台。
一实施例中，所述压力检测装置包括受力板和压力传感器，所述受力板可动地安装于所述安装支架并与所述压力传感器连接。
一实施例中，所述安装支架包括后基座、支撑架和前基座，所述后基座通过所述支撑架连接于所述前基座，所述压力传感器安装于所述前基座内侧，所述前基座'上设有安装孔，所述受力板可动地安装于所述前基座的外侧并与所述压力传感器连接。
一实施例中，所述挤压段包括支撑轴和包裹所述支撑轴设置的弹性体。
一实施例中，所述驱动装置包括电机和控制箱，所述控制箱与所述电机电连接并布置成能够控制所述电机的正反转和转速。
一实施例中，所述电机布置成使得其在垂直于所述滚轴的轴线的方向上的投影的至少一部分与所述滚轴在垂直于所述滚轴的轴线的方向上的投影重合。
一实施例中，所述驱动装置进一步包括变速箱，其中所述电机的输出轴与所述变速箱连接并沿垂直于所述滚轴的方向延伸。
一实施例中，所述驱动装置进一步包括变速箱，所述变速箱具有外壳和固定连接于所述外壳内的固定板，第一齿轮可转动地安装于所述固定板上并与电机的输出轴连接，所述固定板上还可转动地安装有与所述第一齿轮啮合的第二齿轮，所述第二齿轮通过传动轴和第一蜗杆连接，所述第一蜗杆与可转动地连接于所述外壳的第一蜗轮啮合，所述第一蜗轮与可转动地安装于所述外壳内的第二蜗杆啮合，所述第二蜗杆与可转动地安装于所述外壳内的第二蜗轮啮合，所述第二蜗轮与所述一对滚轴的一个滚轴固定连接，该滚轴连接有第三齿轮，以及所述一对滚轴的另一个滚轴连接有第四齿轮，所述第三齿轮和所述第四齿轮啮合。
一实施例中，所述电机上设有电机轴，所述第一齿轮设有安装孔，所述电机轴 通过所述第一齿轮的安装孔和第一齿轮固定。
本申请还提供了一种流体排放系统，包括容器和内衬袋，所述内衬袋设有排放口并安装于所述容器内。所述流体排放系统还包括上述的挤推器，其中所述一对滚轴能够可操作地将所述内衬袋夹持在所述挤压段之间并且能够通过所述驱动装置做相对反向转动，以对所述内衬袋施加挤推力。
本实用新型的挤推器操作简单，能够使得排放残留极少，并且能够根据压力传感器所检测到的数据来停止挤压或开始挤压，在发生挤推异常时，能够便于纠正，避免意外破坏内衬袋。
附图说明
图1是本申请的挤推器的正面看的立体图。
图2是本申请的挤推器的背面看的立体图。
图3是本申请的挤推器的分解图。
图4是本申请的变速箱的传动机构的立体图。
图5是本申请的挤推器的控制箱的侧视图。
图6是本申请的挤推器的控制箱的俯视图。
图7是本申请的压力检测装置的分解图。
图8是本申请的压力检测装置组装好后的立体图。
图9是本申请的压力检测装置从另一视角看时的分解图。
图10是本申请的压力检测装置组装好并从另一视角看时的立体图。
图11是本申请的挤推器的沿垂直于滚轴方向在设有压力检测装置位置处剖切的截面图，其中压力检测装置处于未触发状态。
图12是本申请的挤推器的沿垂直于滚轴方向在设有压力检测装置位置处剖切的截面图，其中压力检测装置处于触发状态。
图13是本实用新型的另一实施例的挤推器的分解图，其中，压力检测装置与图1-10所示实施例不同。
图14是图13的挤推器的立体图。
图15和图16是采用本申请的挤推器的流体排放系统的使用状态图。
具体实施方式
以下将结合附图对本实用新型的较佳实施例进行详细说明，以便更清楚理解本实用新型的目的、特点和优点。应理解的是，附图所示的实施例并不是对本实用新型范围的限制，而只是为了说明本实用新型技术方案的实质精神。
在下文的描述中，出于说明各种公开的实施例的目的阐述了某些具体细节以提供对各种公开实施例的透彻理解。但是，相关领域技术人员将认识到可在无这些具体细节中的一个或多个细节的情况来实践实施例。在其它情形下，与本申请相关联的熟知的装置、结构和技术可能并未详细地示出或描述从而避免不必要地混淆实施例的描述。
除非语境有其它需要，在整个说明书和权利要求中，词语“包括”和其变型，诸如“包含”和“具有”应被理解为开放的、包含的含义，即应解释为“包括，但不限于”。
在整个说明书中对“一个实施例”或“一实施例”的提及表示结合实施例所描述的特定特点、结构或特征包括于至少一个实施例中。因此，在整个说明书的各个位置“在一个实施例中”或“在一实施例”中的出现无需全都指相同实施例。另外，特定特点、结构或特征可在一个或多个实施例中以任何方式组合。
如该说明书和所附权利要求中所用的单数形式“一”和“所述”包括复数指代物，除非文中清楚地另外规定。应当指出的是术语“或”通常以其包括“和/或”的含义使用，除非文中清楚地另外规定。
在以下描述中，为了清楚展示本实用新型的结构及工作方式，将借助诸多方向性词语进行描述，但是应当将“前”、“后”、“左”、“右”、“外”、“内”、“向外”、“向内”、“上”、“下”等词语理解为方便用语，而不应当理解为限定性词语。
术语说明
中型散装容器：复合型中型散装容器(下文称为IBC容器)是一类在国际范围内被食品、生化、医药、化工等行业广泛所使用的包装周转容器。由于IBC集装桶可以被多次重复使用，在灌装、储运和运输时具备明显的优势，并且与圆桶相比，IBC集装桶可以节约35％的储存空间，尺寸符合ISO标准，不仅适用于无菌罐装而且箱体紧凑，便于大批量安全高效存储，故而大量运用于液体、 颗粒和薄片等形态物料的运输、包装、存储过程中。目前，现存规格有820L、1000L、1250L三种，通常情况下，其组成结构包含塑料内胆(内衬袋)、灌装口、排放装置(阀门或简易排放口等)、侧板、底座及盖板。
本实用新型的挤推器包括至少一对挤推件，例如至少两根滚轴，当需要排放内衬袋内的液体时，将两根滚轴夹持住内衬袋，在驱动装置的驱动下，该对挤推件作相对运动，例如两根滚轴做相对反向转动，对内衬袋施加挤推力，从而对内衬袋内的液体进行挤排，在液体排放过程中，随着内衬袋内液体的减少，两根滚轴在驱动装置的驱动下自动随液面下降并对液体进行挤推。本文中，挤推力指的是对力作用对象，例如内衬袋及其内所容纳的液体，同时产生挤压和推动效果的力。
如图1-4所示，挤推器1包括一对滚轴10、驱动装置20和安装支架30。滚轴10可转动地安装于安装支架30。驱动装置20包括电机21、变速箱22和控制箱26。电机21的输出轴连接于变速箱22的输入端。变速箱22的输出端连接于滚轴10之一。一对滚轴10相关联，从而一根滚轴的转动可带动另一根滚轴相应转动。控制箱26与电机21电连接并布置成能够控制电机21的正反转和转速。由此，一对滚轴10相应地正转或者反转。电机21可以为恒扭矩步进电机或者步进电机。采用恒扭矩步进电机，不管电机转速如何变化，挤推器的扭矩保持不变，杜绝了一般电机在速度降低后扭矩不够，挤推不转动情况。
滚轴10具有两端的安装部11和位于安装部11之间的挤压段12。在本实施例中，安装部11与挤压段12形成为一体，但其也可以分开形成再组装在一起。滚轴10为长条杆状件，其沿轴向方向的尺寸远大于其沿径向方向的尺寸，并且安装部11的长度远小于挤压段12的长度。挤压段12用于与内衬袋101(如图15所示)的袋体接触，从而挤压袋体，下文还会详细描述。滚轴10包括支撑轴13和包裹支撑轴设置的弹性体14。安装部11形成为支撑轴13的一部分。较佳地，弹性体为由诸如橡胶、树脂或其它高分子弹性材料等制成的弹性软体。
具体地，弹性体为圆筒状，其具有与支撑轴的外径配合的内径的内部腔体。支撑轴伸入弹性体的内部腔体中。支撑轴的外表面可以进行涂胶处理。弹性体包裹吸附于支撑轴的整个外表面，从而在驱动装置的驱动下支撑轴转动时弹性体同步转动。或者，弹性体通过注塑成型的方式与支撑轴形成一体。
应理解的是，滚轴10的弹性体也可以是其他形状，例如椭圆形、三角形或 者方形等。本实施例中，支撑轴为大致圆柱状，即其外径沿轴向基本不变化，而弹性体的外径沿轴向均匀变化，从而形成具有锥度的弹性体。但在其它实施例中，弹性体的外径也可以沿轴向基本不变化，或者只有一部分沿轴向均匀变化。
在本实施例中，安装支架30包括后基座31、两个支撑架32和前基座33、34。后基座31由两个子基座310和锁定紧构组成。锁紧机构用于将两个子基座可松开地锁紧。两个支撑架32将后基座31与前基座33、34连接成一体，即支撑架32的两端分别连接于后基座31和前基座33。后基座31和前基座33的厚度设置成尽可能小，以使挤压段尽可能长。支撑架的横截面形状可以为C字形或者采取其他形状和结构的防护装置，只要其能够至少包围滚轴的外侧面，使得在挤推器挤推过程中，滚轴的外侧面与被夹持物分离即可。
两根滚轴每根滚轴的一端连接于对应的一个子基座310。后基座31之一设置有通孔，另一个设置有螺孔。锁紧扳手314拧入穿过通孔进入螺孔以将一对滚轴10可操作地锁紧，反之亦然。其中，螺孔可以是通孔或盲孔。上述的通孔、螺孔和锁紧扳手构成上述锁紧机构。当然，锁紧机构也可以采用其它方式，例如通过卡扣锁紧的方式。
前基座33、34分别可拆卸地安装至变速箱外壳25的两侧。前基座33、34还分别与两个支撑架的一端连接。一对滚轴10之一的支撑轴通过安装部11连接至变速箱22的输出轴，而另一根的安装部11可转动地安装在前基座33中。两根滚轴的安装部还分别连接有第三齿轮15和第四齿轮16，其可相互啮合，从而一根滚轴的转动可带动另一根滚轴做反向转动。滚轴的两端分别接纳在后基座31和前基座32、33，以使得在挤推过程中，弹性体的端部不会与被夹持物(例如内衬袋101)接触。因此在挤推过程中，弹性体不会脱落。
电机21可以位于滚轴的上方，下方或侧面。较佳地，电机布置成使得其在垂直于所述滚轴的轴线的方向上的投影的至少一部分与滚轴在垂直于滚轴的轴线的方向上的投影重合。本实施例中，电机21布置在变速箱22的上方并且其输出轴与变速箱22连接并从变速箱22向上(即垂直或斜向上)延伸。电机21的外罩24也从变速箱22向上延伸。因此，电机21本身及其外罩不太会增加挤推器的总长度，从而使得挤压段的有效长度(即能够参与挤压的长度)更长。应理解的是，本实施例中，电机21也可以布置在变速箱22的下方并且其输出轴与变 速箱22连接并从变速箱22向下(即垂直或斜向下)延伸。电机外罩24也从变速箱22向下延伸。
变速箱22具有外壳25和固定连接于外壳内的固定板221。第一齿轮222可转动地安装于固定板221上并与电机的输出轴连接。固定板221上还可转动地安装有与第一齿轮222啮合的第二齿轮223。第二齿轮222通过传动轴224和第一蜗杆225连接。第一蜗杆225与可转动地连接于外壳的第一蜗轮226啮合。第一蜗轮226与可转动地安装于外壳内的第二蜗杆227啮合。第二蜗杆227与可转动地安装于外壳内的第二蜗轮228啮合。第二蜗轮228与一对滚轴的一个滚轴10固定连接。该滚轴10连接有第三齿轮15。一对滚轴的另一个滚轴连接有第四齿轮16。第三齿轮15和第四齿轮16啮合，使得一个滚轴的转动能够带动另一个滚轴做反向转动。
电机21上有第一安装孔211。固定板221上设有第二安装孔。螺栓穿过第一安装孔和第二安装孔，将电机21固定连接于固定板221。电机上设有电机轴。第一齿轮设有安装孔。电机轴通过第一齿轮的安装孔和第一齿轮固定。
在工作过程中，第一齿轮带动第二齿轮转动。第二齿轮带动第一蜗杆转动。第一蜗杆带动第一蜗轮转动。第一蜗轮带动第二蜗杆转动。第二蜗杆驱动第二蜗轮转动。第二蜗轮和一个滚轴的轴心连接，并带动该滚轴跟着转动，同时与该滚轴连接的第三齿轮也跟着转动，并带动与另一根滚轴连接的第四齿轮转动。由此，通过第三齿轮和第四齿轮的配合实现该对滚轴做相对反向的运动。
如图5-6所示，控制箱26具有外盖261和设置于外盖的一侧的挂板262。挂板262从外盖261的一侧向外延伸出并然后向下延伸。在使用时，挂板262可以挂靠在容器的侧板上。控制箱26的外部设有控制按钮263，用于控制所述电机的转速快慢以及正反转动作等动作。优选地，控制按钮263设置在外盖的顶部。控制按钮263可以例如包括档位按钮264、正反转按钮265以及急停按钮266。控制箱26上还可设有电源指示灯267和急停指示灯268等。
控制箱26包括可编程控制器。可编程控制器与电机电连接，从而控制电机的运转，例如转速或者正反转等。
如图7-10所示，在前基座33上安装有压力检测装置200。该压力检测装置具有压力基座40和接触开关50。压力基座40可转动地安装在前基座33。接触开关50安装于前基座33并能够与压力基座40接触。接触开关50上设有接触弹片51。在挤推器受到的压力值超过设定值时，接触弹片51动作，从而使得接触开关50工 作并发出信号，以控制驱动装置动作，例如停止、启动、加速或者减速等。
压力基座40具有板状主体41。板状主体41的中部设有驱动面42。驱动面42的两侧设有压簧孔43。压簧孔43安装有压簧61。板状主体41的两侧设有限位筋44。板状主体的上表面的两侧还延伸出两个支臂45。两个支臂45之间连接有旋转轴46。
前基座33具有大致U形壳体331。在壳体331的一侧壁上设有压力基座安装孔332。压力基座安装孔332两侧设有限位挂台337。壳体331的底壁内侧向上延伸出一凸台333。凸台333上设有螺纹孔334。接触开关50上设有安装通孔52。螺钉穿过安装通孔52和螺纹孔334，以将接触开关50固定在凸台333上。壳体的底壁内侧还形成有位于凸台333内侧的旋转槽335。压力基座40的旋转轴46可转动地安装于该旋转槽335中。
组装时，压力基座40通过旋转轴46可转动地卡入于旋转槽335中，压力基座可以围绕旋转轴做旋转运动。压力基座40容纳于压力基座安装孔332，并至少部分露出该压力基座安装孔332。限位筋44挂靠于限位挂台337。接触开关固定于凸台333上，且其上的接触弹片抵靠于驱动面42。压簧61位于凸台333与压力基座之间，从而为压力基座40提供复位力。压力基座40在压簧的作用下，可以在受力时旋转，并在力取消时回弹复位。压力基座40上的限位筋44和前基座33上的限位挂台336配合形成旋转角度上的限位，防止压力基座脱离前基座33。
在挤推过程中，挤推速度大于泵的抽取速度，内衬会受到挤推器的压迫，此时压力装置会受到内衬的反作用力的压迫产生动作，压力装置上的压力基座会旋转带动接触开关的接触弹片，接触弹片的变形使接触开关产生信号，信号传递到控制箱，控制箱信号控制电动马达的停止，挤推器停止转动，如图12所示。
当内衬中的液体被泵抽吸后，挤推器对内衬的压迫力消失，挤推器上面的压力基座受到压簧的作用力使压力基座恢复，接触开关恢复，信号最终传递到挤推器使挤推器恢复正常运转，如图11所示。
图13-14是本实用新型的另一实施例的挤推器1'。本实施例中，压力检测装置与图7-12所示实施例不同，其余基本相同。如图13-14所示，压力检测装置包括受力板70和压力传感器80。压力传感器80安装于前基座33'内侧。前基座33'上设有安装孔331'。受力板70可动地安装于前基座33'的外侧并与压力传感器80连接，从而受力板会受到压力，并将压力传递给压力传感器80。应理解， 这里，压力检测装置也可以安装于安装支架的其他地方，例如后基座或者支持架。
在挤推过程中，受力板会接收到内衬被挤推器挤压的力度。当受力大于设定数值，此时压力传感器信号传递到控制箱，控制箱信号控制驱动装置的电动马达的停止，挤推器停止转动。当内衬中的液体被泵抽吸后，挤推器对内衬的压迫力消失，压力传感器接收到的信号最终传递到控制箱，以控制驱动装置的动作，使得挤推器恢复正常运转。
图15-16是本实用新型实施例的流体排放系统的剖视图，其示出流体排放过程的不同阶段。如图15和16所示，流体排放系统可包括容器100、内衬袋101以及挤推器1。容器100一般是中型散装容器。内衬袋101设有排放口并安装在容器100内。在液体排放过程中，首先将内衬袋101夹持在一对滚轴10中(如图15所示)。具体地，先通过锁紧扳手将挤推器的一对滚轴10松开，然后将内衬袋101的上部夹在容器100的挤推器1上，再通过锁紧扳手将一对滚轴10锁紧。接着，启动驱动装置20，在驱动装置20的带动下，挤推器的一对滚轴10向下做相对反向转动并挤压内衬袋101的袋体，从而对内衬袋101内的液体进行挤推，使得液体从排放口排出。在液体排放过程中，随着内衬袋内液体的减少，一对滚轴10在驱动装置20的驱动下自动随液面下降并对液体进行挤推。
在挤推过程中，挤推速度大于泵的抽取速度，内衬会受到挤推器的压迫，此时压力装置会受到内衬的反作用力的压迫产生动作，压力装置上的压力基座会旋转带动接触开关的接触弹片，接触弹片的变形使接触开关产生信号，信号传递到控制箱，控制箱信号控制电机的停止，挤推器停止转动，如图16所示。当内衬中的液体被泵抽吸后，挤推器对内衬的压迫力消失，挤推器上面的压力基座受到压簧的作用力使压力基座恢复，接触开关恢复，信号最终传递到挤推器使挤推器恢复正常运转，如图15所示。
以上已详细描述了本实用新型的较佳实施例，但应理解到，若需要，能修改实施例的方面来采用各种专利、申请和出版物的方面、特征和构思来提供另外的实施例。
考虑到上文的详细描述，能对实施例做出这些和其它变化。一般而言，在权利要求中，所用的术语不应被认为限制在说明书和权利要求中公开的具体实 施例，而是应被理解为包括所有可能的实施例连同这些权利要求所享有的全部等同范围。

Claims (18)

  1. 一种挤推器，所述挤推器包括一对滚轴、驱动装置和安装支架，其中所述一对滚轴可转动地安装于所述安装支架，每个所述滚轴具有位于两端的安装部和位于所述安装部之间的挤压段，所述一对滚轴能够可操作地将被夹持物夹持在所述挤压段之间并且能够通过所述驱动装置做相对反向转动，以对所述被夹持物施加挤推力，其特征在于，所述挤推器进一步包括压力检测装置和控制装置，其中所述控制装置同时与所述驱动装置和所述压力检测装置电连接，并布置成使得在所述挤推器受到的压力超出预定值时，所述压力检测装置能够将一信号传递给所述控制装置，以控制所述驱动装置动作。
  2. 根据权利要求1所述的挤推器，其特征在于，所述压力检测装置布置于所述安装支架的下侧。
  3. 根据权利要求1所述的挤推器，其特征在于，所述压力检测装置包括压力传感器，所述压力传感器布置成检测所述安装支架所受到的压力值并将该压力值传递给所述控制装置，以控制所述驱动装置动作。
  4. 根据权利要求1所述的挤推器，其特征在于，所述压力检测装置包括接触开关，所述接触开关布置成在所述安装支架受到的压力超过预定值时动作，使得所述驱动装置停止工作，并在所述安装支架受到的压力小于预定值时复位。
  5. 根据权利要求4所述的挤推器，其特征在于，所述压力检测装置包括压力基座，所述压力基座可动地安装于所述安装支架，所述接触开关安装于所述安装支架上并且与所述压力基座接触。
  6. 根据权利要求5所述的挤推器，其特征在于，所述安装支架包括安装支架包括后基座、支撑架和前基座，所述后基座通过所述支撑架连接于所述前基座，所述压力基座可转动地安装于所述前基座。
  7. 根据权利要求6所述的挤推器，其特征在于，所述压力基座与所述前基座之间设有弹簧。
  8. 根据权利要求6所述的挤推器，其特征在于，所述压力基座具有板状主体，所述板状主体的上表面的两侧延伸出两个支臂，两个支臂之间连接有旋转轴；所述前基座设有压力基座安装孔，所述压力基座容纳于所述压力基座安装孔并通过所述旋转轴可转动地连接于所述前基座，且所述压力基座至少一部分露出该压力基座安 装孔。
  9. 根据权利要求8所述的挤推器，其特征在于，所述板状主体的两侧设有限位筋，所述前基座设有限位挂台，所述限位筋挂靠于所述限位挂台。
  10. 根据权利要求1所述的挤推器，其特征在于，所述压力检测装置包括受力板和压力传感器，所述受力板可动地安装于所述安装支架并与所述压力传感器连接。
  11. 根据权利要求10所述的挤推器，其特征在于，所述安装支架包括后基座、支撑架和前基座，所述后基座通过所述支撑架连接于所述前基座，所述压力传感器安装于所述前基座内侧，所述前基座上设有安装孔，所述受力板可动地安装于所述前基座的外侧并与所述压力传感器连接。
  12. 根据权利要求1所述的挤推器，其特征在于，所述挤压段包括支撑轴和包裹所述支撑轴设置的弹性体。
  13. 根据权利要求1所述的挤推器，其特征在于，所述驱动装置包括电机和控制箱，所述控制箱与所述电机电连接并布置成能够控制所述电机的正反转和转速。
  14. 根据权利要求13所述的挤推器，其特征在于，所述电机布置成使得其在垂直于所述滚轴的轴线的方向上的投影的至少一部分与所述滚轴在垂直于所述滚轴的轴线的方向上的投影重合。
  15. 根据权利要求13所述的挤推器，其特征在于，所述驱动装置进一步包括变速箱，其中所述电机的输出轴与所述变速箱连接并沿垂直于所述滚轴的方向延伸。
  16. 根据权利要求13所述的挤推器，其特征在于，所述驱动装置进一步包括变速箱，所述变速箱具有外壳和固定连接于所述外壳内的固定板，第一齿轮可转动地安装于所述固定板上并与电机的输出轴连接，所述固定板上还可转动地安装有与所述第一齿轮啮合的第二齿轮，所述第二齿轮通过传动轴和第一蜗杆连接，所述第一蜗杆与可转动地连接于所述外壳的第一蜗轮啮合，所述第一蜗轮与可转动地安装于所述外壳内的第二蜗杆啮合，所述第二蜗杆与可转动地安装于所述外壳内的第二蜗轮啮合，所述第二蜗轮与所述一对滚轴的一个滚轴固定连接，该滚轴连接有第三齿轮，以及所述一对滚轴的另一个滚轴连接有第四齿轮，所述第三齿轮和所述第四齿轮啮合。
  17. 根据权利要求16所述的挤推器，其特征在于，所述电机上设有电机轴，所述第一齿轮设有安装孔，所述电机轴通过所述第一齿轮的安装孔和第一齿轮固定。
  18. 一种流体排放系统，包括容器和内衬袋，所述内衬袋设有排放口并安装于所述容器内，其特征在于，所述流体排放系统还包括如权利要求1-17中任一项所述的挤推器，其中所述一对滚轴能够可操作地将所述内衬袋夹持在所述挤压段之间并且能够通过所述驱动装置做相对反向转动，以对所述内衬袋施加挤推力。
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