Connection device for bulk powder discharge

Abstract

The invention discloses a connection device for bulk powder unloading, including: a frame; a lifting frame, which is provided with a lifting drive device, the lifting frame and the frame are connected and installed through the lifting drive device, and the lifting frame is provided with two front and rear drive devices spaced left and right; a front and rear moving frame, which is provided with a linear drive device inclined toward the front and upper, and the left and right sides of the front and rear moving frame are provided with a rotating shaft, and the action end of the front and rear drive device is fixedly connected to the front and rear moving frame; a blanking frame, the rotating shaft is hinged to the blanking frame, and the action end of the linear drive device is hinged to the blanking frame. Under the coordinated action of the lifting drive device, the front and rear drive device and the linear drive device, the blanking frame can make corresponding angle adjustments according to the tilt angle of the container, so that the bulk powder in the liner bag is gradually discharged into the discharge hopper under the action of gravity. The invention not only improves the unloading efficiency of the bulk powder, but also reduces the energy consumption of the bulk powder during unloading.

Description

Technical Field

[0001] The invention relates to the field of bulk powder unloading, in particular to a connecting device for bulk powder unloading. Background Art

[0002] In the traditional starch transportation method, upstream starch companies generally supply starch to downstream starch companies by packaging it into one ton / bag. This transportation method requires a lot of manpower when loading and unloading starch bags.

[0003] In order to facilitate transportation and improve the loading and unloading efficiency of starch, a new starch transportation method has been developed in recent years. In the new starch transportation method, upstream starch companies only need to pour starch into containers with liner bags, and the containers are circulated to downstream starch companies, and then the downstream starch companies use unloading mechanisms to store the starch in the containers into starch silos.

[0004] The existing unloading mechanism includes a unloading connection device and a star-shaped unloader. The star-shaped unloader is provided with a flexible connection pipe. The unloading connection device can drive the flexible connection pipe to move to the unloading port of the liner bag, and the worker then seals and connects the flexible connection pipe with the unloading port of the liner bag. However, when unloading, in order to avoid interference between the unloading connection device and the container, the container cannot be tilted too much, so that the starch in the liner bag can only be extracted into the star-shaped unloader through the negative pressure generated by the star-shaped unloader, resulting in problems such as long unloading time and high energy consumption. Summary of the invention

[0005] The invention aims to solve at least one of the technical problems existing in the prior art. To this end, the invention proposes a connecting device for bulk powder unloading, which can effectively improve the unloading efficiency of bulk powder and save the unloading time of bulk powder.

[0006] A connecting device for bulk powder unloading according to a first aspect of the present invention includes:

[0007] frame;

[0008] A lifting frame, which is provided with at least two lifting drive devices, the lifting frame and the frame are connected and installed through the lifting drive devices; the lifting frame is provided with two front and rear drive devices spaced left and right;

[0009] A front-to-back moving frame is provided with a linear driving device arranged obliquely toward the front and upward, a rotating shaft is arranged on both the left and right sides of the front-to-back moving frame, the two rotating shafts are arranged coaxially, the action ends of the two front-to-back driving devices are respectively fixedly connected to the left and right sides of the front-to-back moving frame, and the two front-to-back driving devices jointly drive the front-to-back moving frame to move forward and backward;

[0010] The blanking frame is located within the front and rear movable frames, and the vertical section of the blanking frame is triangular. The rotating shafts of the two front and rear movable frames are respectively rotatably connected to the left and right sides of the blanking frame. The active end of the linear drive device is hinged on the rear side of the blanking frame, and the linear drive device drives the blanking frame to rotate around the two rotating shafts.

[0011] The connecting device for unloading loose powder according to the embodiment of the invention has at least the following beneficial effects: a unloading hopper with a flexible connecting pipe is provided outside the lower part of the blanking frame, and the flexible connecting pipe is hung on the blanking frame. Under the coordinated action of the lifting drive device, the front and rear drive device and the linear drive device, the blanking frame can make corresponding angle adjustments according to the inclination angle of the container, so that the loose powder in the liner bag is gradually unloaded into the unloading hopper under the action of gravity. Compared with the prior art, the invention not only effectively improves the unloading efficiency of the loose powder, but also greatly reduces the energy consumption of the loose powder during unloading.

[0012] According to some embodiments created by the present invention, the connecting device also includes a blowing device, which includes a main air pipe and multiple blowing pipes. The main air pipe is installed at the rear of the blanking frame, all the blowing pipes are connected to the main air pipe, and the multiple blowing pipes extend forward.

[0013] According to some embodiments of the present invention, the main air pipe is provided with an air inlet, and the air inlet is used to introduce compressed gas.

[0014] According to some embodiments of the present invention, the plurality of air blowing pipes extend from the inside of the blanking frame to the outside of the blanking frame.

[0015] According to some embodiments of the present invention, the frame includes two connecting rods spaced apart from each other, and the two connecting rods are located on the same horizontal plane.

[0016] According to some embodiments of the present invention, the lifting frame spans between the two connecting rods, and the lifting frame is provided with four lifting drive devices, and the four lifting drive devices are arranged in a rectangular distribution.

[0017] According to some embodiments of the present invention, the front-rear movable frame is slidably connected to the lifting frame.

[0018] According to some embodiments of the present invention, the linear drive device and the two front and rear drive devices are all cylinders, hydraulic cylinders or electric push rods.

[0019] According to some embodiments of the present invention, the lifting frame is provided with two first position detection sensors distributed front and back, and the two first position detection sensors are used to detect the front and back positions of the front and back moving frame.

[0020] According to some embodiments of the present invention, a second position detection sensor is provided on the front-rear moving frame, and the second position detection sensor is used to detect the rotation position of the blanking frame.

[0021] Additional aspects and advantages of the present invention will be given in part in the following description and in part will become apparent from the following description or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0023] Figure 1 is a schematic diagram of the three-dimensional structure of a connecting device according to an embodiment of the present invention;

[0024] Figure 2 yes Figure 1 A front view of the connecting device shown;

[0025] Figure 3 yes Figure 1 A top view of the connecting device shown;

[0026] Figure 4 yes Figure 1 A partial enlarged view of the connecting device at point A is shown.

[0027] In the accompanying drawings: 100-frame, 200-lifting frame, 300-front and rear moving frame, 400-blank material frame, 110-connecting rod, 120-reinforcement rod, 210-lifting drive device, 220-front and rear drive device, 310-linear drive device, 320-rotating shaft, 230-guide rail, 330-slider, 211-screw, 500-blowing device, 510-main air pipe, 520-blowing pipe, 511-air inlet, 600-first position detection sensor, 610-first induction plate, 710-second induction plate. DETAILED DESCRIPTION

[0028] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0029] In the description of the present invention, it should be understood that the descriptions involving orientation, such as up, down, front, back, left, right, etc., the orientations or positional relationships indicated are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0030] In the description of the invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood to exclude the number itself, and "above", "below", "within" etc. are understood to include the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0031] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0032] like Figures 1 to 4 As shown, the connection device for bulk powder unloading according to the first embodiment of the invention includes: a frame 100, a lifting frame 200, a front-rear moving frame 300 and a blanking frame 400. Since a discharge hopper with a flexible connecting pipe is provided below the blanking frame 400 (not shown in the drawings), and the flexible connecting pipe is hung on the blanking frame 400, the frame 100 includes two connecting rods 110 spaced apart from each other, the two connecting rods 110 are located on the same horizontal plane, the front parts of the two connecting rods 110 are reinforced by reinforcing rods 120, and the rear parts of the two connecting rods 110 are installed on other fixed brackets, so that the frame 100 can be erected above the discharge hopper. It should be noted that the invention does not limit the installation scheme of the frame 100, and this embodiment is only used as a preferred implementation scheme.

[0033] The lifting frame 200 is a hollow frame with a generally rectangular cross-section. Lifting drive devices 210 are respectively provided at the four corners of the lifting frame 200. The four lifting drive devices 210 are arranged in a rectangular distribution and the four lifting drive devices 210 lift synchronously. The lifting frame 200 is connected and installed to the machine frame 100 through the lifting drive devices 210, so that the lifting frame 200 can span between the two connecting rods 110. Driven by the four lifting drive devices 210 together, the lifting frame 200 can move up and down relative to the machine frame 100. It can be understood that as long as one lifting drive device 210 is provided on each of the left and right sides of the lifting frame 200, the up and down lifting of the lifting frame 200 can be achieved, that is, the minimum number of the lifting drive devices 210 is two. Two front-back drive devices 220 are provided on the lifting frame 200. The two front-back drive devices 220 are respectively located on the left and right sides of the lifting frame 200, and the two front-back drive devices 220 move synchronously.

[0034] The front-back moving frame 300 is a hollow frame with a "冂"-shaped cross-section. The front-back moving frame 300 is provided with a linear drive device 310 that is inclined forward and upward. The linear drive device 310 is located in the middle of the front-back moving frame 300. Rotating shafts 320 are provided on both the left and right sides of the front-back moving frame 300. The two rotating shafts 320 are coaxially arranged; the acting ends of the two front-back drive devices 220 are respectively fixedly connected to the left and right sides of the front-back moving frame 300, so that the two front-back drive devices 220 jointly drive the front-back moving frame 300 to move back and forth. Specifically, the lifting frame 200 is provided with two front-back arranged guide rails 230, and the front-back moving frame 300 is provided with sliders 330 that are matched and connected with the two guide rails 230.

[0035] The front and rear movable frames 300 are provided on the periphery of the blanking frame 400, and the vertical section of the blanking frame 400 is triangular. The rotating shafts 320 of the two front and rear movable frames 300 are respectively rotatably connected to the left and right sides of the blanking frame 400, so that the two front and rear drive devices 220 jointly drive the front and rear movable frames 300 and the blanking frame 400 to move forward and backward; the working end of the linear drive device 310 is hinged on the rear side of the blanking frame 400, and the two rotating shafts 320 are specifically located at the front part of the blanking frame 400, so that the linear drive device 310 drives the blanking frame 400 to rotate around the two rotating shafts 320. Specifically, the linear drive device 310 and the two front and rear drive devices 220 are all cylinders, hydraulic cylinders or electric push rods, among which the present embodiment is preferably a cylinder; the four lifting drive devices 210 are all cylinders, hydraulic cylinders or screw mechanisms, among which the present embodiment is preferably a screw mechanism, and the screw nut of the screw mechanism is a worm wheel with an internal thread, and the worm wheel is driven by a worm. When the motor drives the worm to rotate, the worm drives the worm wheel to rotate, and the worm wheel drives the screw 211 to move up and down.

[0036] Through the above-mentioned arrangement, at least the following effects can be achieved: the lifting drive device 210, the front and rear drive device 220 and the linear drive device 310 can realize the coordinated operation of the three through program control or manual control, so that the blanking frame 400 can make corresponding angle adjustments according to the tilt angle of the container. As the tilt angle of the container gradually increases, the loose powder in the liner bag gradually falls into the discharge hopper under the action of gravity. Compared with the prior art, the invention not only effectively improves the unloading efficiency of the loose powder, but also greatly reduces the energy consumption of the loose powder during unloading.

[0037] like Figures 1 to 3 As shown, in order to prevent the loose powder from agglomerating during unloading and improve the fluidity of the loose powder during unloading, thereby improving the unloading efficiency of the loose powder, the connecting device also includes a blowing device 500, the blowing device 500 includes a main air pipe 510 and a plurality of blowing pipes 520, the main air pipe 510 is installed on the rear side of the blanking frame 400, the main air pipe 510 is provided with an air inlet 511, the air inlet 511 is used to introduce compressed gas, all the blowing pipes 520 are connected to the main air pipe 510, and the plurality of blowing pipes 520 extend forward, and in the process of unloading the loose powder, the plurality of blowing pipes 520 extend into the inner liner bag. Specifically, the plurality of blowing pipes 520 extend from the inside of the blanking frame 400 to the outside of the blanking frame 400, and the setting direction of the ends of the plurality of blowing pipes 520 is parallel to the setting direction of the linear drive device 310.

[0038] like Figure 4As shown, in some embodiments of the invention, the lifting frame 200 is provided with two first position detection sensors 600 distributed front and back, the front and rear moving frame 300 is connected with a first induction plate 610, the moving path of the first induction plate 610 intersects with the two first position detection sensors 600, one of the first position detection sensors 600 is used to detect the front limit of the front and rear moving frame 300, and the other first position detection sensor 600 is used to detect the rear limit of the front and rear moving frame 300, and the two first position detection sensors 600 are both connected with the two front and rear drive devices 220 by electrical signals to prevent the front and rear moving frame 300 from having a stroke. The front and rear moving frame 300 is provided with a second position detection sensor (not shown in the drawings), the blanking frame 400 is connected with a second induction plate 710, the moving path of the second induction plate 710 intersects with the second position detection sensor, the second position detection sensor is used to detect the initial position of the rotation of the blanking frame 400, and the second position detection sensor is connected with the linear drive device 310 by electrical signals, so that the blanking frame 400 can accurately perform rotation reset. Specifically, the second position detection sensor and the two first position detection sensors 600 are proximity switches or photoelectric sensors. If proximity switches are selected, the first sensing plate 610 and the second sensing plate 710 are both metal plates. If photoelectric sensors are selected, the first sensing plate 610 and the second sensing plate 710 are both light reflecting plates.

[0039] Through the above arrangement, the bulk powder unloading steps created by the present invention are:

[0040] 1. The spatial position of the blanking frame 400 is adjusted by the lifting drive device 210, the front and rear drive device 220 and the linear drive device 310, so that the blanking frame 400 is close to the container, thereby making the flexible connecting pipe close to the liner bag;

[0041] 2. Open the bag opening of the inner liner bag and place the bag opening in the blanking frame 400. At this time, the plurality of air blowing pipes 520 are extended into the inner liner bag, and the worker surrounds the flexible connecting pipe outside part of the bag opening;

[0042] 3. The worker ventilates the flexible connecting pipe, thereby increasing the volume of the flexible connecting pipe;

[0043] 4. The container truck gradually lifts the container. Under the coordinated action of the lifting drive device 210, the front and rear drive device 220 and the linear drive device 310, the blanking frame 400 can make corresponding angle adjustments according to the tilt angle of the container, so that the loose powder in the liner bag is gradually discharged into the discharge hopper under the action of gravity.

[0044] It should be further explained that, in step 2, since the blowing device 500 is located in the blanking frame 400, part of the bag opening of the liner bag will be set on the multiple blowing tubes 520, so that part of the bag opening cannot be surrounded by the flexible connecting tube, but because the volume of the flexible connecting tube increases after ventilation, the inlet of the flexible connecting tube is larger than the bag opening of the liner bag, ensuring that the loose powder can be discharged from the bag opening of the liner bag into the unloading hopper.

[0045] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A connection device for bulk powder unloading, characterized in that: include: Rack(100); A lifting frame (200) is provided with at least two lifting drive devices (210), and the lifting frame (200) and the frame (100) are connected and installed via the lifting drive devices (210); the lifting frame (200) is provided with two front and rear drive devices (220) spaced apart from each other on the left and right; A front-to-back movable frame (300) is provided with a linear drive device (310) arranged tilted toward the front and upward, a rotating shaft (320) is provided on both the left and right sides of the front-to-back movable frame (300), the two rotating shafts (320) are coaxially arranged, the action ends of the two front-to-back drive devices (220) are respectively fixedly connected to the left and right sides of the front-to-back movable frame (300), and the two front-to-back drive devices (220) jointly drive the front-to-back movable frame (300) to move forward and backward; A blanking frame (400) is located inside the front-rear moving frame (300), the vertical section of the blanking frame (400) is triangular, the rotating shafts (320) of the two front-rear moving frames (300) are respectively connected to the left and right sides of the blanking frame (400) for rotation, the action end of the linear drive device (310) is hinged on the rear side of the blanking frame (400), the linear drive device (310) drives the blanking frame (400) to rotate around the two rotating shafts (320), the lifting drive device (210), the front-rear drive device (220) and the linear drive device (310) are controlled by a program or manually to achieve coordinated operation of the three, so that the blanking frame (400) can make corresponding angle adjustments according to the tilt angle of the container; a discharge hopper with a flexible connecting pipe is provided below the blanking frame (400), and the flexible connecting pipe is hung on the blanking frame (400); The blowing device (500) comprises a main air pipe (510) and a plurality of blowing pipes (520), wherein the main air pipe (510) is installed at the rear of the blanking frame (400), and all the blowing pipes (520) are connected to the main air pipe (510), and the plurality of blowing pipes (520) extend forward; the volume of the flexible connecting pipe increases after ventilation, so that the inlet of the flexible connecting pipe is larger than the bag opening of the liner bag, thereby ensuring that the loose powder is discharged from the bag opening of the liner bag into the discharge hopper.

2. The connection device for bulk powder discharge according to claim 1, characterized in that: The main air pipe (510) is provided with an air inlet (511), and the air inlet (511) is used to allow compressed gas to enter.

3. The connection device for bulk powder discharge according to claim 1, characterized in that: The plurality of air blowing pipes (520) extend from the inside of the blanking frame (400) to the outside of the blanking frame (400).

4. The connection device for bulk powder discharge according to claim 1, characterized in that: The frame (100) comprises two connecting rods (110) arranged at intervals on the left and right, and the two connecting rods (110) are located on the same horizontal plane.

5. The connection device for bulk powder discharge according to claim 4, characterized in that: The lifting frame (200) spans between the two connecting rods (110), and the lifting frame (200) is provided with four lifting drive devices (210), and the four lifting drive devices (210) are arranged in a rectangular distribution.

6. The connection device for bulk powder discharge according to claim 1, characterized in that: The front-rear moving frame (300) is slidably connected to the lifting frame (200).

7. The connection device for bulk powder discharge according to claim 1, characterized in that: The linear drive device (310) and the two front and rear drive devices (220) are all cylinders, hydraulic cylinders or electric push rods.

8. The connection device for bulk powder discharge according to claim 1, characterized in that: The lifting frame (200) is provided with two first position detection sensors (600) distributed front and back, and the two first position detection sensors (600) are used to detect the front and back positions of the front and back moving frame (300).

9. The connection device for bulk powder discharge according to claim 1, characterized in that: The front-rear moving frame (300) is provided with a second position detection sensor, and the second position detection sensor is used to detect the rotation position of the blanking frame (400).

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