Granular material discharging and weighing device

Abstract

The utility model relates to the technical field of material weighing, in particular to a particle material discharging and weighing device which comprises a buffer storage bin and a material receiving hopper, a feeding port is formed in the top of the buffer storage bin, a thick discharging square pipe and a thin discharging square pipe which are communicated with the buffer storage bin are arranged at the bottom of the buffer storage bin, a thick feeding device is arranged in the middle of the thick discharging square pipe, and a thin feeding device is arranged in the middle of the thin discharging square pipe. A rough feeding device is arranged at the bottom of the rough feeding square pipe, a rough feeding device is arranged at the bottom of the rough feeding square pipe, the rough feeding device, the rough feeding device and the rough feeding square pipe form a rough feeding containing cavity, a fine feeding device is arranged at the bottom of the fine feeding square pipe, a receiving hopper is located below the rough feeding square pipe and the fine feeding square pipe, and a weighing sensor is arranged on the receiving hopper. Aiming at particle materials which are good in liquidity, stable in material layer and small in weight error in the same volume, the coarse feeding device carries out rapid coarse feeding through the coarse feeding volume cavity with the fixed volume, the problem that in the debugging process, the opening size of coarse feeding and the time of coarse feeding need to be repeatedly experimented and set is solved, and the production efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of material weighing, in particular to a particle material discharge weighing device. Background Art

[0002] In the initial stage of granular material packaging, the granular materials to be packaged need to be weighed. There are many ways to weigh granular materials with different fluidity. For granular materials with good fluidity, the self-discharging feeding mode is adopted for weighing, that is, the granular materials themselves have good fluidity. Through the gravity of the granular materials themselves and the material pressure of the upper granular materials, they fall into the weighing bucket. According to the feedback of the weighing bucket sensor, the opening and closing size of the feeding valve is controlled to achieve the control of weight accuracy. If high-speed weighing is required, the opening and closing size of the feeding valve must be controlled by a servo motor. In order to meet the requirements of weighing accuracy, the control valve opening requires at least three positions: completely closed, open wide for coarse feeding, and open small for fine feeding. The servo motor can accurately realize the rapid conversion of the three positions according to the feedback of the weighing sensor.

[0003] For the above packaging scales that use servo motors to control material discharge, in order to save time for each cycle during high-speed weighing, the time for rough feeding is generally fixed, and the feedback data of the weighing sensor is not collected. The feedback data of the weighing sensor is only collected during fine feeding. During the debugging process, the opening size and time of rough feeding need to be repeatedly tested and set, which is time-consuming and labor-intensive, with low production efficiency, and the cost of servo motors is relatively high. Utility Model Content

[0004] The utility model aims to provide a granular material discharging and weighing device for granular materials with good fluidity, stable material layer and small weight error in the same volume.

[0005] A particle material discharge weighing device comprises a buffer silo and a receiving hopper, wherein a feed port is arranged on the top of the buffer silo, a coarse material discharge square tube and a fine material discharge square tube which are connected thereto are arranged on the bottom of the buffer silo, a coarse feeding device is arranged in the middle of the coarse material discharge square tube, a coarse material discharge device is arranged at the bottom of the coarse material discharge square tube, the coarse material feeding device, the coarse material discharge device and the coarse material discharge square tube form a coarse material discharge volume cavity, a fine material discharge device is arranged at the bottom of the fine material discharge square tube, the receiving hopper is located below the coarse material discharge square tube and the fine material discharge square tube, and a weighing sensor is arranged on the receiving hopper.

[0006] Furthermore, the coarse feeding device includes a coarse feeding cylinder installation box, a coarse feeding cylinder is fixedly arranged on the outside of the coarse feeding cylinder installation box, an output end of the coarse feeding cylinder passes through the coarse feeding cylinder installation box and is fixedly connected with a coarse feeding gate plate, the coarse feeding gate plate passes through the coarse feeding cylinder installation box and is movably arranged inside the coarse feeding gate plate cooperates with the inner wall of the coarse feeding square tube.

[0007] Furthermore, the rough material discharge device includes two symmetrically arranged rough material discharge plates, the middle part of the rough material discharge plates is rotatably arranged on the bottom outer side of the rough material discharge square tube through the rough material discharge shaft, the upper parts of the two rough material discharge plates are respectively hinged to the rough material discharge cylinder and the output end of the rough material discharge cylinder, and the lower parts of the two rough material discharge plates are opened and closed at the bottom of the rough material discharge square tube and cooperate with it.

[0008] Furthermore, the fine material discharge device includes a fine material discharge shaft and a fine material discharge cylinder. The fine material discharge shaft is rotatably arranged on the outer side of the bottom of the fine material discharge square tube. Two fine material discharge side plates are fixedly arranged on the fine material discharge shaft. The two fine material discharge side plates are symmetrically arranged on the front and rear sides of the fine material discharge square tube. An arc-shaped bottom plate matching the bottom of the fine material discharge square tube is fixedly arranged between the bottoms of the two fine material discharge side plates. The fine material discharge cylinder is rotatably arranged on the outside of the fine material discharge square tube, and the output end of the fine material discharge cylinder is rotatably connected to one of the fine material discharge side plates.

[0009] Furthermore, the rough feeding device also includes a connecting rod, one end of which is rotatably connected to the upper part of a rough feeding plate, and the other end of which is rotatably connected to the lower part of another rough feeding plate.

[0010] Furthermore, sealing plates are fixedly provided on the upper part of the rough material plate and the upper part of the arc-shaped bottom plate.

[0011] Furthermore, a feed valve is provided on the feed port, and a level meter cooperating with the feed valve is provided on the top of the buffer silo.

[0012] In summary, the utility model has the following beneficial effects:

[0013] The utility model aims at granular materials with good fluidity, stable material layer and small weight error in the same volume. A rough material volume chamber for rough material is formed through a rough material feeding device, a rough material discharging device and a rough material discharging square tube. The rough material is quickly discharged through the rough material volume chamber with a fixed volume, and then the fine material is discharged through the fine material discharging square tube and the fine material discharging device to ensure the accuracy of the total weight of the discharged material. The utility model solves the problem that the opening size of the rough material feeding and the time of the rough material feeding need to be repeatedly tested and set during the debugging process, thereby improving the production efficiency. In addition, the rough material feeding device, the rough material discharging device and the fine material discharging device of the utility model are all driven by cylinders, saving manufacturing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The utility model is further described in detail below with reference to the accompanying drawings and specific embodiments:

[0015] Figure 1 This is a front view of a granular material discharging and weighing device of the utility model before discharging;

[0016] Figure 2 This is a front view of a granular material discharging and weighing device of the utility model when performing rough discharging;

[0017] Figure 3 The utility model is a front view of a granular material discharging and weighing device when performing fine material discharging.

[0018] In the figure: 1 buffer silo, 2 feed port, 3 feed valve, 4 level meter, 5 coarse material square tube, 6 fine material square tube, 7 coarse feeding device, 71 coarse feeding cylinder installation box, 72 coarse feeding cylinder, 73 coarse feeding gate, 8 coarse material device, 81 coarse material plate, 82 coarse material rotating shaft, 83 coarse material cylinder, 84 connecting rod, 9 coarse material volume chamber, 10 fine material device, 101 fine material rotating shaft, 102 fine material side plate, 103 arc bottom plate, 104 fine material cylinder, 11 receiving hopper, 12 weighing sensor, 13 sealing plate. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the embodiments of the utility model clearer, the technical solution in the embodiments of the utility model will be clearly and completely described below in combination with the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The following is combined with Figure 1-3 The utility model is further described as follows:

[0021] A particle material discharge weighing device comprises a buffer silo 1 and a receiving hopper 11, a feed port 2 is arranged on the top of the buffer silo 1, a feed valve 3 is arranged on the feed port 2, a level meter 4 matched with the feed valve 3 is arranged on the top of the buffer silo 1, a coarse material square tube 5 and a fine material square tube 6 connected thereto are arranged at the bottom of the buffer silo 1, a coarse feeding device 7 is arranged in the middle of the coarse material square tube 5, a coarse material device 8 is arranged at the bottom of the coarse material square tube 5, the coarse material feeding device 7, the coarse material device 8 and the coarse material square tube 5 form a coarse material volume chamber 9, a fine material device 10 is arranged at the bottom of the fine material square tube 6, the receiving hopper 11 is located below the coarse material square tube 5 and the fine material square tube 6, and a weighing sensor 12 is arranged on the receiving hopper 11.

[0022] In this embodiment, the buffer silo 1, the coarse material square tube 5 and the fine material square tube 6 store granular materials with good fluidity and stable material layers. The granular materials are uniform in size and density, and the internal weight error within the same volume is small.

[0023] like Figure 1 As shown, the coarse material discharge device 8 and the fine material discharge device 10 are in a closed state, and the coarse material feeding device 7 is in an open state. At this time, both the coarse material discharge square tube 5 and the fine material discharge square tube 6 are filled with granular materials.

[0024] like Figure 2 As shown, after the coarse feeding device 7 closes the middle of the coarse material square tube 5, the coarse feeding device 7, the coarse material discharging device 8 and the coarse material discharging square tube 5 form a coarse material discharging volume chamber 9 for the coarse material. Preferably, the volume size of the coarse material discharging volume chamber 9 can be set according to the height of the coarse feeding device 7 as required to ensure that the weight of the granular material in the coarse material discharging volume chamber 9 is less than the total weight of the granular material to be weighed. The coarse material discharging device 8 is opened, and the granular material in the coarse material discharging volume chamber 9 quickly flows into the receiving hopper 11. The weighing sensor 12 monitors the weight of the granular material in the receiving hopper 11 in real time after the coarse material is discharged.

[0025] like Figure 3 As shown, after the rough material discharge is completed, the fine material discharge device 10 is opened for fine material discharge. When the weighing sensor 12 detects that the granular material in the receiving hopper 11 reaches the weight requirement, the rough material discharge device 8 and the fine material discharge device 10 are closed, and then the rough material feeding device 7 is opened, and the granular material in the buffer silo 1 fills the rough material discharge square tube 5, and the return is restored to Figure 1 Status shown.

[0026] Preferably, when the level meter 4 detects that the particulate material in the cache silo 1 reaches a set minimum level, the feed valve 3 opens, and the particulate material enters the cache silo 1 from the feed port 2; when the level meter 4 detects that the particulate material in the cache silo 1 reaches a set maximum level, the feed valve 3 closes.

[0027] The coarse feeding device 7 includes a coarse feeding cylinder installation box 71, and a coarse feeding cylinder 72 is fixedly arranged on the outside of the coarse feeding cylinder installation box 71. The output end of the coarse feeding cylinder 72 passes through the coarse feeding cylinder installation box 71 and is fixedly connected with a coarse feeding gate plate 73. The coarse feeding gate plate 73 passes through the coarse feeding cylinder installation box 71 and is movably arranged inside the coarse feeding cylinder installation box 71. The coarse feeding gate plate 73 cooperates with the inner wall of the coarse material square tube 5.

[0028] In this embodiment, when the coarse feeding cylinder 72 is extended, the output end of the coarse feeding cylinder 72 pushes the coarse feeding gate 73 to move from the coarse feeding cylinder installation box 71 to the coarse material discharge square tube 5, and the coarse feeding device 7, the coarse material discharge device 8 and the coarse material discharge square tube 5 form a coarse material discharge volume chamber 9 for coarse material discharge, at this time, the granular material above the coarse feeding gate 73 cannot enter the coarse material discharge volume chamber 9. When the coarse feeding cylinder 72 is contracted, the output end of the coarse feeding cylinder 72 moves the coarse feeding gate 73 from the coarse material discharge square tube 5 to the coarse feeding cylinder installation box 71, at this time, the granular material in the buffer silo 1 fills the coarse material discharge square tube 5.

[0029] The rough feeding device 8 includes two symmetrically arranged rough feeding plates 81, the middle part of the rough feeding plates 81 is rotatably arranged on the bottom outer side of the rough feeding square tube 5 through the rough feeding rotating shaft 82, the upper parts of the two rough feeding plates 81 are hinged to the rough feeding cylinder 83 and the output end of the rough feeding cylinder 83 respectively, the rough feeding device 7 also includes a connecting rod 84, one end of the connecting rod 84 is rotatably connected to the upper part of a rough feeding plate 81, and the other end of the connecting rod 84 is rotatably connected to the lower part of the other rough feeding plate 81, the lower parts of the two rough feeding plates 81 are opened and closed at the bottom of the rough feeding square tube 5 and matched therewith, and a sealing plate 13 is fixedly arranged on the upper part of the rough feeding plate 81.

[0030] In this embodiment, when the rough material cylinder 83 contracts, the rough material cylinder 83 drives the rough material plate 81 to rotate with the rough material rotating shaft 82 as the axis, and under the action of the connecting rod 84, the two rough material plates 81 are opened synchronously, and the granular materials in the rough material volume chamber 9 flow into the receiving hopper 11 for rough material discharge. Preferably, a sealing plate 13 is fixedly provided on the upper part of the rough material plate 81 to prevent the granular materials from flowing out from the gap between the bottom of the rough material square tube 5 and the rough material plate 81 when the two rough material plates 81 are closed.

[0031] The fine material discharge device 10 includes a fine material discharge shaft 101 and a fine material discharge cylinder 104. The fine material discharge shaft 101 is rotatably arranged on the outer side of the bottom of the fine material discharge square tube 6. Two fine material discharge side plates 102 are fixedly arranged on the fine material discharge shaft 101. The two fine material discharge side plates 102 are symmetrically arranged on the front and rear sides of the fine material discharge square tube 6. An arc-shaped bottom plate 103 matching the bottom of the fine material discharge square tube 6 is fixedly arranged between the bottoms of the two fine material discharge side plates 102. A sealing plate 13 is fixedly arranged on the upper part of the arc-shaped bottom plate 103. The fine material discharge cylinder 104 is rotatably arranged on the outside of the fine material discharge square tube 6, and the output end of the fine material discharge cylinder 104 is rotatably connected to one of the fine material discharge side plates 102.

[0032] In this embodiment, when the fine material discharge cylinder 104 contracts, the fine material discharge cylinder 104 drives the two fine material discharge side plates 102 and the arc bottom plate 103 to rotate with the fine material discharge shaft 101 as the axis, and the arc bottom plate 103 no longer blocks the bottom of the fine material discharge square tube 6, and the granular material in the fine material discharge square tube 6 flows into the receiving hopper 11 for fine material discharge. Preferably, a sealing plate 13 is fixedly provided on the upper part of the arc bottom plate 103, and when the arc bottom plate 103 blocks the bottom of the fine material discharge square tube 6, the granular material can be prevented from flowing out from the gap between the bottom of the fine material discharge square tube 6 and the arc bottom plate 103.

[0033] In summary, the present invention is not limited to the above specific embodiments. Those skilled in the art may make several changes and modifications without departing from the spirit and scope of the present invention. The scope of protection of the present invention shall be subject to the claims of the present invention.

[0034] In the description of this patent, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing this patent 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 this patent.

[0035] In the description of this patent, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be fixedly connected or set, or it can be detachably connected or set, or connected or set in one piece. For ordinary technicians in this field, the specific meanings of the above terms in this patent can be understood according to specific circumstances.

Claims

1. A granular material discharge weighing device, characterized in that: The invention comprises a buffer material bin (1) and a receiving hopper (11), wherein the top of the buffer material bin (1) is provided with a feed inlet (2), the bottom of the buffer material bin (1) is provided with a coarse material square tube (5) and a fine material square tube (6) which are connected thereto, a coarse material feeding device (7) is provided in the middle of the coarse material square tube (5), a coarse material discharge device (8) is provided at the bottom of the coarse material square tube (5), the coarse material feeding device (7), the coarse material discharge device (8) and the coarse material square tube (5) form a coarse material discharge volume chamber (9), the bottom of the fine material discharge square tube (6) is provided with a fine material discharge device (10), the receiving hopper (11) is located below the coarse material square tube (5) and the fine material discharge square tube (6), and a weighing sensor (12) is provided on the receiving hopper (11).

2. A granular material discharging and weighing device as claimed in claim 1, characterized in that: The coarse feeding device (7) comprises a coarse feeding cylinder installation box (71), a coarse feeding cylinder (72) being fixedly arranged outside the coarse feeding cylinder installation box (71), an output end of the coarse feeding cylinder (72) passing through the coarse feeding cylinder installation box (71) and being fixedly connected to a coarse feeding gate (73), the coarse feeding gate (73) passing through the coarse feeding cylinder installation box (71) and being movably arranged inside the coarse feeding cylinder installation box (71), the coarse feeding gate (73) being matched with the inner wall of the coarse material discharge square tube (5).

3. A granular material discharging and weighing device as claimed in claim 2, characterized in that: The rough material discharge device (8) comprises two symmetrically arranged rough material discharge plates (81), the middle portion of the rough material discharge plates (81) being rotatably arranged on the outside of the bottom of the rough material discharge square tube (5) via a rough material discharge shaft (82), the upper portions of the two rough material discharge plates (81) being hinged to the rough material discharge cylinder (83) and the output end of the rough material discharge cylinder (83), respectively, and the lower portions of the two rough material discharge plates (81) being openably arranged on the bottom of the rough material discharge square tube (5) and being matched therewith.

4. A granular material discharging and weighing device as claimed in claim 3, characterized in that: The fine material discharge device (10) comprises a fine material discharge shaft (101) and a fine material discharge cylinder (104); the fine material discharge shaft (101) is rotatably arranged outside the bottom of a fine material discharge square tube (6); two fine material discharge side plates (102) are fixedly arranged on the fine material discharge shaft (101); the two fine material discharge side plates (102) are symmetrically arranged on the front and rear sides of the fine material discharge square tube (6); an arc-shaped bottom plate (103) matching the bottom of the fine material discharge square tube (6) is fixedly arranged between the bottoms of the two fine material discharge side plates (102); the fine material discharge cylinder (104) is rotatably arranged outside the fine material discharge square tube (6); and an output end of the fine material discharge cylinder (104) is rotatably connected to one of the fine material discharge side plates (102).

5. A granular material discharging and weighing device as claimed in claim 2, characterized in that: The coarse feeding device (7) further comprises a connecting rod (84), one end of which is rotatably connected to the upper part of a coarse feeding plate (81), and the other end of which is rotatably connected to the lower part of another coarse feeding plate (81).

6. A granular material discharging and weighing device as claimed in claim 5, characterized in that: A sealing plate (13) is fixedly provided on the upper portion of the rough material plate (81) and the upper portion of the arc-shaped bottom plate (103).

7. A granular material discharging and weighing device as claimed in claim 1, characterized in that: The feed port (2) is provided with a feed valve (3), and the top of the buffer bin (1) is provided with a material level meter (4) that cooperates with the feed valve (3).

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