Feeding method and feeding station for automatically recycling ton bags

Abstract

The invention discloses a feeding method for automatic recycling of ton bags, which unloads on the premise of not damaging the ton bags, so that the ton bags can be reused, the powder concentration C is calculated through the loss weight m1 of the materials in the ton bags in unit time and the increase weight m2 of the materials in a hopper in unit time, and the C value is compared with the safety concentration C1, so that the ton bags can be recycled. Therefore, the pressure adjusting device can be suitable for powdery materials. The invention further discloses an automatic ton bag recycling feeding station which comprises a hopper and a feeding box, the hopper is provided with a feeding port, the top of the feeding box is provided with a grabbing device, the grabbing device is provided with a first weighing device, the bottom of the feeding box is provided with a feeding port, the feeding port corresponds to the feeding port in position, and the bottom of the hopper is provided with a second weighing device. The first weighing device and the second weighing device are respectively connected with the calculating device.

Description

Technical Field

[0001] The invention relates to the field of feeding, in particular to a feeding method and a feeding station for automatic recycling of ton bags. Background Art

[0002] The ton bag feeding station is a kind of unloading equipment specially used for handling powdered and granular materials in ton bags. Due to its high efficiency, safety and environmental protection, the ton bag feeding station is widely used in food, medicine, fine chemicals, additives, chemicals, plastics, dyes, building materials and other industries.

[0003] The existing ton bag feeding station is equipped with a puncturer at the feeding entrance. When feeding, the ton bag loaded with materials is moved above the puncturer. Under the action of gravity, the ton bag moves toward the puncturer and is cut by the puncturer, and the materials fall out from the cut to the feeding entrance. However, this feeding method has the following problems: 1. Ton bag fragments may be generated at the moment of puncture, and the ton bag fragments mixed with the materials will pollute the materials; 2. The ton bag itself is expensive, and the punctured ton bag cannot be used again, which makes the company's operating costs relatively high; 3. The existing feeding method is more suitable for granular materials. If it is used to feed powdered materials, a large amount of flying dust will be generated during the feeding process after puncture. A large amount of flying dust will not only increase material waste, affect the working environment, and employees may suffer from diseases such as bronchitis, but also make the feeding station have the safety hazard of dust explosion. Summary of the invention

[0004] Purpose of the invention: The purpose of the present invention is to provide a feeding method and a feeding station for automatic recycling of ton bags that can reduce the operating costs of enterprises.

[0005] Technical solution: The feeding method for automatic recycling of ton bags of the present invention comprises the following steps:

[0006] Step 1: The grabbing device grabs the ton bag loaded with materials and moves it into the feeding box, and the end of the grabbing device is opposite to the bag opening of the ton bag;

[0007] Step 2: The hopper is provided with a feed port, and the grabbing device moves the ton bag loaded with materials to the top of the feed port, and makes the bag opening of the ton bag correspond to the position of the feed port;

[0008] Step 3: The visual detector installed in the feeding box detects the tightening device installed at the bag mouth of the ton bag, and the untying manipulator moves to the tightening device to release the tightening device from tightening the bag mouth of the ton bag;

[0009] Step 4: When the material enters the hopper through the feed port, the first weighing device arranged in the grabbing device detects the weight loss m1 of the material in the ton bag per unit time, and the second weighing device arranged at the bottom of the hopper detects the weight increase m2 of the material in the hopper per unit time. The calculation device calculates the powder concentration C in the feeding box by the following formula, and compares the C value with the safe concentration C1:

[0010]

[0011] Where m1 is the weight loss of the material in the ton bag per unit time, m2 is the weight increase of the material in the inner hopper, L is the length of the inner cavity of the feeding box, W is the width of the inner cavity of the feeding box, and H is the height of the inner cavity of the feeding box;

[0012] Step 5: If C < C1, go to step 7 and return to step 1 to perform the calculation for the next unit time; if C > C1, go to step 6; if all the materials in the ton bag have been unloaded, go to step 7:

[0013] Step 6: Further reduce the pressure in the hopper and return to the first step to perform the calculation for the next unit time;

[0014] Step 7: The grabbing device moves the unloaded ton bag out of the feeding box for repeated loading of materials.

[0015] Furthermore, the safety concentration C1 = 10 mg / m 3 (mg / m3).

[0016] Furthermore, in the sixth step, the pressure in the hopper is further reduced according to the following formula: P'=P×a, where P' is the pressure in the hopper in the next unit time, P is the pressure in the hopper in the current unit time, and a is the adjustment coefficient.

[0017] Furthermore, the range of a is 0.7 to 0.9.

[0018] A feeding station for automatic circulation of ton bags comprises a hopper and a feeding box, wherein the hopper is provided with a feeding port, a grabbing device is arranged on the top of the feeding box, a first weighing device for detecting the weight loss m1 of the material in the ton bag per unit time is arranged on the grabbing device, a feeding port is arranged at the bottom of the feeding box, the feeding port corresponds to the position of the feeding port, a second weighing device for detecting the weight increase m2 of the material in the hopper per unit time is arranged at the bottom of the hopper, the first weighing device and the second weighing device are respectively connected to a calculation device, and the calculation device has a built-in calculation formula for calculating the powder concentration C.

[0019] Furthermore, it also includes a transformer, the output end of which extends into the inner cavity of the hopper. The transformer can reduce the pressure in the inner cavity of the hopper to make it a negative pressure state, which is more conducive to the material entering the hopper; the transformer can also increase the pressure in a short time, so as to blow the adsorbed fine particles or powder back into the hopper, which not only realizes the maximum utilization of materials, but also simplifies the cleaning and maintenance process and reduces operating costs.

[0020] Furthermore, a dust hopper is arranged above the feed port, the position of the dust hopper corresponds to the position of the feed port, and the dust hopper is connected to the feed port through a connecting pipe.

[0021] Furthermore, a magnetic device is provided at the connecting pipe (either inside the connecting pipe or outside the connecting pipe). The magnetic device is used to remove metal impurities in the material, ensure the safety of subsequent processing and improve the quality of the product.

[0022] Furthermore, a visual detector and an unbinding robot are provided at the feeding port. The visual detector is used to detect the position of the tightening device at the bag mouth of the ton bag, and the unbinding robot is used to release the tightening device from the bag mouth of the ton bag.

[0023] Furthermore, a transverse guide rail is arranged on the top of the feeding box, and the grabbing device is slidably connected to the transverse guide rail. One end of the transverse guide rail extends out of the feeding box, so that the grabbing device can automatically grab the ton bag outside the feeding box.

[0024] Furthermore, a discharge port is arranged at the bottom end of the hopper, and a discharge valve is arranged at the discharge port.

[0025] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages:

[0026] 1. The present invention monitors the dust concentration in the feeding box in real time through a calculation formula, and controls the pressure in the hopper to allow the material to enter the hopper as much as possible, so the present invention can be applied to powdery materials;

[0027] 2. The present invention is provided with a pressure transformer, which reduces the pressure in the inner cavity of the hopper to make it a negative pressure state during the unloading process, which is more conducive to the entry of materials into the hopper, prevents the leakage of materials, especially powdered materials, and avoids environmental pollution, while also protecting the health of workers; the pressure transformer can also increase the pressure in a short time, so as to blow the adsorbed fine particles or powder back into the hopper, which not only realizes the maximum utilization of materials, but also simplifies the cleaning and maintenance process and reduces the operating cost;

[0028] 3. Since the present invention does not damage the ton bag, the ton bag can be reused, which is in line with the concept of sustainable development;

[0029] 4. The present invention improves the working efficiency. The manipulator can automatically grab the ton bags outside the feeding box and move them to the feeding port, which not only reduces the workload of manual handling and improves the working efficiency, but also prevents workers from suffering from occupational diseases as much as possible because no manual handling is required;

[0030] 5. The magnetic suction device is arranged at the connecting pipe in the present invention, which can effectively remove metal impurities in the material, ensure the safety of subsequent processing and improve the quality of the product; BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a flow chart of the present invention.

[0032] Figure 2 It is a stereogram of the present invention.

[0033] Figure 3 It is a cross-sectional view of the present invention.

[0034] Figure 4 for Figure 3 Enlarged view at A.

[0035] Among them: 1. Hopper; 2. Voltage transformer; 3. Feed box; 4. Transverse guide rail; 5. Grabbing device; 501. Longitudinal grabbing cylinder; 502. Grabbing hand; 6. Discharge valve; 7. Visual inspection instrument; 8. Unbinding manipulator; 9. Dust hopper; 10. Magnetic suction device. DETAILED DESCRIPTION

[0036] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0037] See attached Figure 2 to Figure 4 The feeding station for automatic recycling of ton bags shown in the present invention includes a feeding box 3, a grabbing device 5 is arranged on the top of the feeding box 3, the grabbing device 5 includes a longitudinal grabbing cylinder 501 and a grabbing hand 502, the grabbing hand 502 is fixedly connected to the output end of the longitudinal grabbing cylinder 501, a first weighing device (not shown) for detecting the loss weight m1 of the material in the ton bag per unit time is arranged on the grabbing device 5, a feeding port is arranged at the bottom of the feeding box 3, a second weighing device (not shown) for detecting the increase weight m2 of the material in the hopper 1 per unit time is arranged at the bottom of the hopper 1, the first weighing device and the second weighing device are respectively connected to a calculating device (not shown), and the calculating device has a built-in calculation formula for calculating the powder concentration C; a transverse guide rail 4 is arranged on the top of the feeding box 3, and the grabbing device 5 is slidably connected to the transverse guide rail 4.

[0038] It also includes a transformer 2 , the output end of which extends into the inner cavity of the hopper 1 .

[0039] It also includes a hopper 1, which has a feed port, the feed port corresponds to the feeding port, a dust hopper 9 is arranged above the feed port, the position of the dust hopper 9 corresponds to the position of the feeding port, the dust hopper 9 is connected to the feed port through a connecting pipe, a magnetic suction device 10 is arranged at the connecting pipe, and a visual inspection instrument 7 and an unbinding robot 8 are arranged at the feeding port.

[0040] A discharge port is arranged at the bottom of the hopper 1, and a discharge valve 6 is arranged at the discharge port.

[0041] See attached Figure 1 to Figure 4 The feeding method for automatic recycling of ton bags shown in the present invention comprises the following steps:

[0042] Step 1: The grabbing device 5 grabs the ton bag loaded with materials and moves it into the feeding box 3, and the end of the grabbing device 5 is opposite to the bag opening of the ton bag;

[0043] Step 2: The hopper 1 is provided with a feed port, and the grabbing device 5 moves the ton bag loaded with materials to the top of the feed port, and makes the bag opening of the ton bag correspond to the position of the feed port;

[0044] Step 3: The visual detector 7 arranged in the feeding box 3 detects the tightening device arranged at the bag mouth of the ton bag, and the untying manipulator 8 moves to the tightening device to release the tightening device from tightening the bag mouth of the ton bag;

[0045] Step 4: When the material enters the hopper 1 through the feed port, the first weighing device set in the grabbing device 5 detects the weight loss m1 of the material in the ton bag per unit time, and the second weighing device set at the bottom of the hopper 1 detects the weight increase m2 of the material in the hopper 1 per unit time. The calculation device calculates the powder concentration C in the feeding box 3 by the following formula, and compares the C value with the safety concentration C1, and the safety concentration C1 = 10 mg / m3:

[0046]

[0047] Where m1 is the weight loss of the material in the ton bag per unit time, m2 is the weight increase of the material in the inner hopper 1, L is the length of the inner cavity of the feeding box, W is the width of the inner cavity of the feeding box, and H is the height of the inner cavity of the feeding box;

[0048] Step 5: If C < C1, go to step 7 and return to step 1 to perform the calculation for the next unit time; if C > C1, go to step 6; if all the materials in the ton bag have been unloaded, go to step 7:

[0049] Step 6: Further reduce the pressure in hopper 1 according to the following formula: P'=P×a, where P' is the pressure in hopper 1 in the next unit time, P is the pressure in hopper 1 in the current unit time, a is the adjustment coefficient, and the range of a is 0.7 to 0.9, and return to the first step to perform the calculation for the next unit time;

[0050] Step 7: The grabbing device 5 moves the unloaded ton bag out of the feeding box for repeated loading of materials.

Claims

1. The feeding method for automatic recycling of ton bags is as follows: The first step: the grabbing device (5) grabs the ton bag loaded with materials and moves it into the feeding box (3), and the grabbing end of the grabbing device (5) is opposite to the bag opening of the ton bag; Step 2: The hopper (1) is provided with a feed port, and the grabbing device (5) moves the ton bag loaded with materials to the top of the feed port, and makes the bag opening of the ton bag correspond to the position of the feed port; Step 3: The visual inspection device (7) disposed in the feeding box (3) detects the tightening device disposed at the mouth of the ton bag, and the untying manipulator (8) moves to the tightening device to release the tightening device from tightening the mouth of the ton bag; Step 4: When the material enters the hopper (1) through the feed port, the first weighing device arranged on the grabbing device (5) detects the weight loss m1 of the material in the ton bag per unit time, and the second weighing device arranged at the bottom of the hopper (1) detects the weight increase m2 of the material in the hopper (1) per unit time. The calculation device calculates the powder concentration C in the feeding box (3) by the following formula, and compares the C value with the safe concentration C1: Wherein m1 is the weight loss of the material in the ton bag per unit time, m2 is the weight gain of the material in the inner hopper (1), L is the length of the inner cavity of the feeding box, W is the width of the inner cavity of the feeding box, and H is the height of the inner cavity of the feeding box; Step 5: If C < C1, go to step 7 and return to step 1 to perform the calculation for the next unit time; if C > C1, go to step 6; if all the materials in the ton bag have been unloaded, go to step 7: Step 6: further reduce the pressure in the hopper (1) and return to the first step to perform the calculation for the next unit time; Step 7: The grabbing device (5) moves the unloaded ton bag out of the feeding box for repeated loading of materials.

2. The feeding method for automatic recycling of ton bags according to claim 1 is characterized by: The safety concentration C1 = 10 mg / m3.

3. The feeding method for automatic recycling of ton bags according to claim 1 is characterized by: In the sixth step, the pressure in the hopper (1) is further reduced according to the following formula: P'=P×a, where P' is the pressure in the hopper (1) in the next unit time, P is the pressure in the hopper (1) in the current unit time, and a is the adjustment coefficient, and the range of a is 0.7 to 0.

9.

4. The feeding station for automatic recycling of ton bags is characterized by: The invention comprises a hopper (1) and a feeding box (3), wherein the hopper (1) has a feeding port, a gripping device (5) is arranged on the top of the feeding box (3), a first weighing device for detecting the weight loss m1 of the material in the ton bag per unit time is arranged on the gripping device (5), a feeding port is arranged at the bottom of the feeding box (3), the feeding port corresponds to the position of the feeding port, a second weighing device for detecting the weight increase m2 of the material in the hopper (1) per unit time is arranged at the bottom of the hopper (1), the first weighing device and the second weighing device are respectively connected to a calculation device, and the calculation device has a built-in calculation formula for calculating the powder concentration C.

5. The feeding station for automatic recycling of ton bags according to claim 4 is characterized by: It also comprises a voltage conversion device (2), the output end of the voltage conversion device (2) extending into the inner cavity of the hopper (1).

6. The feeding station for automatic recycling of ton bags according to claim 4 is characterized by: A dust hopper (9) is arranged above the feed port, the position of the dust hopper (9) corresponds to the position of the feed port, and the dust hopper (9) is connected to the feed port via a connecting pipe.

7. The feeding station for automatic recycling of ton bags according to claim 6 is characterized by: A magnetic attraction device (10) is provided at the connecting pipe.

8. The feeding station for automatic recycling of ton bags according to claim 4 is characterized by: A visual detector (7) and an unbinding robot (8) are provided at the feeding port.

9. The feeding station for automatic recycling of ton bags according to claim 4 is characterized by: A transverse guide rail (4) is arranged on the top of the feeding box (3), and the grabbing device (5) is slidably connected to the transverse guide rail (4).

10. The feeding station for automatic recycling of ton bags according to claim 4 is characterized by: A discharge port is arranged at the bottom end of the hopper (1), and a discharge valve (6) is arranged at the discharge port.

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