A dust-free automatic bag-breaking and material speed-controlled conveying system for ton bags

Abstract

This utility model relates to a dust-free automatic bag-breaking and material speed-controlled conveying system for ton bags, belonging to the field of ton bag breaking technology. The purpose of this utility model is to address the problems existing in the prior art by providing a dust-free automatic bag-breaking and material speed-controlled conveying system for ton bags, including a reaction vessel, a feed pipe, a powder-liquid dispersion and mixing pump, a discharge pipe, a powder suction pipe, a hopper cone, a star-shaped feeder, and a hopper. The powder suction pipe is connected at both ends to the bottom of the hopper cone and the powder suction port, respectively. The feed pipe is connected at both ends to an upper discharge valve and a feed valve, respectively. The discharge pipe is connected at both ends to a top flange and a discharge valve, respectively. The dust generated after bag breaking is prevented from escaping from the center because the ton bag sits on the cross-shaped cutter. The dust removal interface connects to an external negative pressure dust collector. Dust from the gap between the ton bag and the hopper rises and is treated by the dust filter and dust removal interface, resulting in no external dust and achieving a dust-free effect.

Description

Technical Field

[0001] This utility model relates to a dust-free automatic bag breaking and material speed control conveying system for ton bags, belonging to the field of ton bag breaking technology. Background Technology

[0002] In the chemical industry, ton bag packaging is a common packaging method for powder raw materials. When using ton bag packaged powder raw materials, the usage scenarios are divided into the following two methods: (1) The raw materials packaged in ton bags are stored in a fixed tank area after being broken open, and then transported to a fixed usage point by means of pneumatic, pipe chain, spiral or other means through pipelines. This method has the problems of large footprint and high energy consumption. Moreover, the cleaning of residual powder in the tank area and pipeline is difficult and mostly requires manual cleaning, which poses a high risk of operation; (2) The raw materials packaged in ton bags are transported to the usage point individually. The ton bags are lifted by cranes, cantilever cranes or other equipment, and then the bags are broken manually or mechanically to drop the material to the fixed usage point. This method has the problems of low efficiency and serious dust.

[0003] Chinese invention application CN119429511A discloses a powder conveying device. This device uses a motor to drive a chain, which in turn drives a disc. The disc drags the powder through a pipe to the discharge port, thus conveying the powder. However, a gap exists between the disc and the pipe. In the horizontal section of the pipe, powder accumulates in this gap under gravity, leading to material waste and making cleaning difficult.

[0004] Chinese invention application CN119262479A discloses a fully automatic ton bag unpacking machine. This system uses a sliding device, a crank device, and a crushing device to unpack ton bags. However, the machine continuously beats the ton bags during operation to ensure all material is discharged, causing dust emissions, environmental pollution, and high occupational health risks for operators.

[0005] In summary, the current ton bag unpacking technology still has some problems and cannot fully meet the needs of various application scenarios. Utility Model Content

[0006] The purpose of this utility model is to address the problems existing in the prior art by providing a dust-free automatic bag breaking and material speed control conveying system for ton bags. This utility model can solve problems such as dust dispersion, material accumulation, and controllable feeding speed during the unpacking process of ton bags.

[0007] The technical solution provided by this utility model to solve the above-mentioned technical problems is: a dust-free automatic bag breaking and material speed control conveying system for ton bags, including a reaction vessel, a feed pipe, a powder-liquid dispersion and mixing pump, a discharge pipe, a powder suction pipe, a hopper cone, a star-shaped feeder, and a hopper;

[0008] The hopper is equipped with a cross-shaped cutter inside, the star-shaped feeder is installed at the bottom of the hopper, and the cone hopper of the hopper is installed at the lower end of the star-shaped feeder;

[0009] The pump chamber of the powder-liquid dispersion and mixing pump is provided with a liquid inlet, a liquid outlet, and a powder suction port. The liquid inlet and liquid outlet are respectively provided with a feed valve and a discharge valve.

[0010] The reactor is equipped with a top flange and an upper discharge valve at the top and bottom, respectively.

[0011] The powder suction pipe is connected to the bottom of the cone hopper and the powder suction port at both ends, respectively; the feed pipe is connected to the upper discharge valve and the feed valve at both ends, respectively; the discharge pipe is connected to the top flange and the discharge valve at both ends, respectively.

[0012] A further technical solution is that the system also includes a ton bag lifting device, which includes a cantilever crane base, a cantilever crane guide rail, and an electric hoist. One end of the cantilever crane guide rail is fixed to the top of the cantilever crane base, and the electric hoist is slidably installed on the cantilever crane guide rail. The hopper is located below the electric hoist.

[0013] A further technical solution is that the system also includes an installation platform, the bottom of which is provided with cement pillars, and the reaction vessel and silo are both installed on the installation platform.

[0014] A further technical solution is that the reactor is equipped with a stirring motor and a stirring shaft, and the upper end of the stirring shaft is connected to the stirring motor.

[0015] A further technical solution is that the cone angle of the hopper is 70 degrees.

[0016] A further technical solution is that the hopper is equipped with a hopper cover.

[0017] A further technical solution is that the silo is equipped with a dust filter and a silo air duct that covers the dust filter, and the silo air duct is equipped with a dust removal interface.

[0018] A further technical solution is that the hopper is provided with a drop chute, which is connected to the inner cavity of the hopper's air duct.

[0019] A further technical solution is that the powder suction tube is made of transparent PVC steel wire hose.

[0020] A further technical solution is that the cross-shaped cutter includes a conical tip, a flat blade, and a mounting bracket; the upper and lower ends of the flat blade are respectively fixedly connected to the bottom of the conical tip and the mounting bracket.

[0021] This utility model has the following beneficial effects:

[0022] 1. The unpacking of ton bags can be done without human contact. The bag can be automatically broken by the weight of the bag itself and the contact of the cross-shaped cutter.

[0023] 2. The dust generated after the bag is broken is not dispersed in the center because the ton bag is located on the cross blades; the dust removal interface is connected to an external negative pressure dust collector. The dust around the ton bag and the gap between the ton bag and the hopper rises and is treated by the dust filter and the dust removal interface, so there is no dust on the outside, achieving a dust-free effect.

[0024] 3. The tapered design of the hopper ensures that powders with an angle of repose of less than 60 degrees can be stored without accumulating on the hopper wall;

[0025] 4. The rotation speed of the star-shaped feeder is controlled by an automatic control device, which enables controllable powder feeding speed;

[0026] 5. The powder suction pipe is made of transparent PVC steel wire hose, which can realize real-time monitoring of powder flow status;

[0027] 6. The powder-liquid dispersion mixing pump has negative pressure at the suction port, which can achieve negative pressure to break up powder bridging and solve the hidden danger of powder bridging.

[0028] 7. Powder enters through the powder suction port, and liquid enters through the liquid inlet. The powder and liquid are mixed in the pump chamber of the powder-liquid dispersion and mixing pump, and the liquid is discharged through the liquid outlet to achieve a dust-free effect.

[0029] 8. The cross-shaped cutter is detachable, allowing for reuse and reducing operating costs;

[0030] 9. The spacing between the openings of the dust filter screen decreases in a progressively smaller manner, ensuring a balanced and stable negative pressure dust removal airflow. Accumulated dust is simultaneously recycled and reused, achieving a dust-free effect. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of the device of this utility model;

[0032] Figure 2 This is a front view of the device of this utility model;

[0033] Figure 3 This is a side view of the device of this utility model;

[0034] Figure 4 This is a top view of the device of this utility model;

[0035] Figure 5 This is a schematic diagram of the hopper structure of the device of this utility model;

[0036] Figure 6 This is a front view of the hopper of the device of this utility model;

[0037] Figure 7This is a partially enlarged view of the pump head structure of the powder-liquid dispersion and mixing pump of this utility model;

[0038] Figure 8 This is a schematic diagram of the feeding wheel structure of the star-shaped feeder of this utility model;

[0039] Figure 9 This is a schematic diagram of the dust removal structure of the device of this utility model;

[0040] Figure 10 This is a schematic diagram of the cross-shaped cutter structure of the device of this utility model.

[0041] The diagram shows: 1-Cantilever crane base; 2-Cantilever crane guide rail; 3-Electric hoist; 4-Agitator motor; 5-Top flange; 6-Reaction vessel; 7-Upper discharge valve; 8-Feed pipe; 9-Feed valve; 10-Liquid inlet; 11-Liquid outlet; 12-Discharge valve; 13-Powder suction port; 14-Powder-liquid dispersion mixing pump; 15-Discharge pipe; 16-Powder suction pipe; 17-Hopper cone; 18-Star feeder; 18-2-Discharge wheel paddle; 19-Hopper; 19-1-Hopper air duct; 19-2-Lower trough; 20-Dust removal interface; 21-Cross cutter; 21-1-Conical tip; 21-2-Flat blade; 21-3-Mounting bracket; 22-Dust filter screen; 23-Cement column; 24-Mounting platform; 25-Hopper cover; 26-Automatic control device; 27-Agitator shaft. Detailed Implementation

[0042] The technical solution of this utility model will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0043] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0044] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can also refer to a mechanical connection. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0045] Furthermore, the technical features involved in the different embodiments of this utility model described below can be combined with each other as long as they do not conflict with each other.

[0046] like Figure 1 As shown, the present invention provides a dust-free automatic bag breaking and material speed control conveying system for ton bags, including a reaction vessel 6, a feed pipe 8, a powder-liquid dispersion and mixing pump 14, a discharge pipe 15, a powder suction pipe 16, a hopper cone 17, a star-shaped feeder 18, and a hopper 19.

[0047] The star-shaped feeder 18 is equipped with a speed reducer and a three-phase variable frequency motor; the powder-liquid dispersion and mixing pump 14 is equipped with a coupling and a three-phase variable frequency motor.

[0048] The hopper 19 is equipped with a cross-shaped cutter 21, the star-shaped feeder 18 is installed at the bottom of the hopper 19, and the hopper cone 17 is installed at the lower end of the star-shaped feeder 18.

[0049] The pump chamber of the powder-liquid dispersion mixing pump 14 is provided with a liquid inlet 10, a liquid outlet 11, and a powder suction port 13. The liquid inlet 10 and the liquid outlet 11 are respectively provided with a feed valve 9 and a discharge valve 12.

[0050] The top and bottom of the reactor 6 are respectively provided with a top flange 5 and an upper discharge valve 7;

[0051] The powder suction pipe 16 is connected at both ends to the bottom of the cone hopper 17 and the powder suction port 13, respectively; the feed pipe 8 is connected at both ends to the upper discharge valve 7 and the feed valve 9, respectively; the discharge pipe 15 is connected at both ends to the top flange 5 and the discharge valve 12, respectively.

[0052] The powder suction port 13 has a built-in negative pressure, which can reach -0.09MPA, and can achieve negative pressure to break up the arch and solve the hidden danger of powder bridging.

[0053] like Figure 1As shown in the illustration, as a further description of the above embodiment, the system also includes a ton bag lifting device, which includes a cantilever crane base 1, a cantilever crane guide rail 2, and an electric hoist 3. One end of the cantilever crane guide rail 2 is fixed to the top of the cantilever crane base 1, and the electric hoist 3 is slidably mounted on the cantilever crane guide rail 2. The hopper 19 is located below the electric hoist 3. The electric hoist 3 is equipped with a wireless remote control device, enabling remote operation by personnel and reducing the probability of mechanical injury.

[0054] like Figure 2 As shown, as a further description of the above embodiment, the system also includes an installation platform 24, the bottom of which is provided with a cement column 23, and the reactor 6 and the silo 19 are both installed on the installation platform 24; the cement column 23 and the installation platform 24 form the installation positions of the reactor 6 and the silo 19.

[0055] like Figure 2 As shown, as a further description of the above embodiment, the system also includes an automatic control device 26 installed on the mounting platform 24. The automatic control device 26 is equipped with a PLC, HMI, and frequency converter. Through the joint control of the PLC and the frequency converter, the speed of the powder-liquid dispersion mixing pump 14 is adjusted, and the liquid flow rate is adjusted to meet the mixing effect of powders with different dispersibility. At the same time, the PLC can adjust the frequency of the three-phase variable frequency motor in real time and synchronously collect data such as frequency, speed, working current, and line voltage. It can also automatically control the feed valve 9 and the discharge valve 12.

[0056] like Figure 2 As shown in the figure, as a further description of the above embodiment, the reaction vessel 6 is provided with a stirring motor 4 and a stirring shaft 27. The upper end of the stirring shaft 27 is connected to the stirring motor 4, and the lower end is located inside the reaction vessel 6. The stirring motor 4 drives the stirring shaft 27 to rotate. The stirring shaft 27 is equipped with four layers of stirring blades, each layer of blades with an inclination angle of 45 degrees. The first layer of blades and the second layer of blades are distributed at 90 degrees, the second layer of blades and the third layer of blades are distributed at 90 degrees, and the third layer of blades and the fourth layer of blades are distributed at 90 degrees.

[0057] like Figure 2 As shown in the figure, as a further description of the above embodiment, the hopper 19 is provided with a hopper cover 25, which seals and locks the reactor, thus achieving a sealing effect. Even in a humid or dry environment, the performance of the entire device is not affected; wherein the hopper cover 25 is provided with a sealing groove inside.

[0058] like Figure 6 As shown, as a further description of the above embodiment, the cone angle of the hopper 17 is 70 degrees, and the 70-degree oblique angle design of the hopper cone 17 is suitable for powders with an angle of repose of less than 60 degrees.

[0059] like Figure 8 As shown in the figure, as a further description of the above embodiment, the star-shaped feeder 18 is provided with a feeding wheel, which is driven to rotate by a reducer and a three-phase variable frequency motor; wherein the number and size of the feeding wheel paddles 18-2 on the feeding wheel are changed, and the different reduction ratios of the reducer are combined with the automatic control device to achieve the material speed filling requirements in any range.

[0060] like Figure 9 As shown, as a further description of the above embodiment, the hopper 19 is provided with a dust filter screen 22 and a hopper air duct 19-1 that wraps around the dust filter screen 22. The hopper air duct 19-1 is provided with a dust removal interface 20. The hopper 19 is provided with a drop trough 19-2, which communicates with the inner cavity of the hopper air duct 19-1. The number of drop troughs 19-2 is 4 to 8.

[0061] The dust filter screen 22 has decreasing aperture sizes. In the vertical direction, the ratio of the cross-sectional dimensions of two adjacent apertures ranges from 1.01 to 1.1, with the bottom aperture having a smaller cross-sectional dimension than the top aperture. The larger cross-sectional dimension of the top aperture is more conducive to dust collection. In the horizontal direction, the aperture spacing decreases, with the largest spacing between two apertures directly opposite the horizontal center of the dust collection interface and the smallest spacing between two apertures of adjacent dust collection interfaces. The ratio of the maximum to the minimum spacing ranges from 1.01 to 1.4. The cross-sectional area of ​​the dust collection interface is proportional to the total cross-sectional area of ​​the dust filter screen apertures, with a ratio range of 1 to 1.2.

[0062] The silo duct 19-1 is a dust discharge space. Dust accumulates in the duct due to the impact and friction of dust on the silo. When the external dust collector stops, the dust accumulates at the bottom of the silo duct 19-1 under the action of gravity. The accumulated dust returns to the silo through the drop chute 19-2.

[0063] As a further description of the above embodiments, the powder suction tube 16 is a transparent PVC steel wire hose.

[0064] like Figure 10 As shown, as a further description of the above embodiment, the cross-shaped cutter 21 includes a conical tip 21-1, a flat blade 21-2, and a mounting bracket 21-3, wherein the mounting bracket 21-3 is cross-shaped; the upper and lower ends of the four flat blades 21-2 are fixedly connected to the bottom of the conical tip 21-1 and the mounting bracket 21-3, respectively.

[0065] The working process of this utility model is as follows: An electric hoist 3 lifts the ton bag and moves it to directly above the hopper 19 via the cantilever crane guide rail 2. The ton bag is then lowered vertically and at a uniform speed. Upon contact with the cross-shaped cutter 21, the ton bag is automatically broken. The diameter of the hopper 19 is 1.08 times the length of the long side of the ton bag. The area occupied by the ton bag itself generates virtually no dust. Dust generated by the falling powder rises through the gap between the ton bag and the inner wall of the hopper 19. Due to the height of the hopper 19, the dust itself is not driven by any force, and the amount of dust escaping to the top of the hopper 19 is limited. An external negative pressure dust collector is connected to the dust collection interface 20. Dust from the top of the hopper 19 is drawn to the dust collector through the dust filter screen 22, achieving dust-free unpacking of the ton bag. A star-shaped discharge system is installed at the bottom of the hopper. The star-shaped feeder 18 has a hopper cone 17 installed at its lower part. The hopper cone 17 is connected to the suction port 13 of the powder-liquid dispersion mixing pump by a powder suction pipe 16. The powder enters the pump chamber through the suction port 13. The liquid at the bottom of the reactor 6 flows into the feed pipe 8 through the upper discharge valve 7. The liquid then enters the pump chamber through the feed valve 9 and the liquid inlet 10. The powder and liquid are mixed in the pump chamber of the powder-liquid dispersion mixing pump 14, and the liquid is discharged. The discharge valve 12 is installed on the horizontal section of the liquid outlet 11 of the powder-liquid dispersion mixing pump. The discharge pipe 15 connects the discharge valve 12 to the top flange 5 of the reactor 6 in both horizontal and vertical directions to realize the circulation of liquid and the addition of powder, and to achieve dust-free automatic bag breaking.

[0066] The above description is not intended to limit the present invention in any way. Although the present invention has been disclosed through the above embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some changes or modifications to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A dust-free automatic bag-breaking and material speed-controlled conveying system for ton bags, characterized in that, Includes a reaction vessel (6), a feed pipe (8), a powder-liquid dispersion and mixing pump (14), a discharge pipe (15), a powder suction pipe (16), a hopper cone (17), a star feeder (18), and a hopper (19); The hopper (19) is equipped with a cross cutter (21), the star feeder (18) is installed at the bottom of the hopper (19), and the hopper cone (17) is installed at the lower end of the star feeder (18); The powder-liquid dispersion mixing pump (14) is provided with a liquid inlet (10), a liquid outlet (11), and a powder suction port (13) on its pump chamber. The liquid inlet (10) and the liquid outlet (11) are respectively provided with a feed valve (9) and a discharge valve (12). The reactor (6) is provided with a top flange (5) and an upper discharge valve (7) at the top and bottom, respectively; The powder suction pipe (16) is connected to the bottom of the cone hopper (17) and the powder suction port (13) at both ends respectively; the feed pipe (8) is connected to the upper discharge valve (7) and the feed valve (9) at both ends respectively; the discharge pipe (15) is connected to the top flange (5) and the discharge valve (12) at both ends respectively.

2. The dust-free automatic bag breaking and material speed control conveying system for ton bags according to claim 1, characterized in that, The system also includes a ton bag lifting device, which includes a cantilever crane base (1), a cantilever crane guide rail (2), and an electric hoist (3). One end of the cantilever crane guide rail (2) is fixed to the top of the cantilever crane base (1), and the electric hoist (3) is slidably installed on the cantilever crane guide rail (2). The hopper (19) is located below the electric hoist (3).

3. The dust-free automatic bag breaking and material speed control conveying system for ton bags according to claim 1, characterized in that, The system also includes an installation platform (24), with a cement column (23) at the bottom of the installation platform (24), and the reactor (6) and the silo (19) are both installed on the installation platform (24).

4. The dust-free automatic bag breaking and material speed control conveying system for ton bags according to claim 1, characterized in that, The reactor (6) is equipped with a stirring motor (4) and a stirring shaft (27), the upper end of which is connected to the stirring motor (4).

5. The dust-free automatic bag-breaking and material speed-controlled conveying system for ton bags according to claim 1, characterized in that, The cone of the hopper (17) is 70 degrees.

6. The dust-free automatic bag-breaking and material speed-controlled conveying system for ton bags according to claim 1, characterized in that, The hopper (19) is provided with a hopper cover (25).

7. The dust-free automatic bag-breaking and material speed-controlled conveying system for ton bags according to claim 1, characterized in that, The hopper (19) is equipped with a dust filter screen (22) and a hopper air duct (19-1) that wraps around the dust filter screen (22). The hopper air duct (19-1) is equipped with a dust removal interface (20).

8. The dust-free automatic bag breaking and material speed control conveying system for ton bags according to claim 7, characterized in that, The hopper (19) is provided with a drop trough (19-2), which is connected to the inner cavity of the hopper air duct (19-1).

9. The dust-free automatic bag breaking and material speed control conveying system for ton bags according to claim 1, characterized in that, The powder suction tube (16) is made of transparent PVC steel wire hose.

10. The dust-free automatic bag breaking and material speed control conveying system for ton bags according to claim 1, characterized in that, The cross-shaped cutter (21) includes a conical tip (21-1), a flat blade (21-2), and a mounting bracket (21-3); the upper and lower ends of the flat blade (21-2) are fixedly connected to the bottom of the conical tip (21-1) and the mounting bracket (21-3), respectively.

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