Powder mixing equipment and its mixing process

Abstract

This invention provides a powder mixing device and its mixing process. The mixing device includes a base plate, two support plates, and a mixing hopper. The two support plates are connected to opposite sides of the mixing hopper. A discharge port and a baffle plate are provided at the bottom of the mixing hopper. A stirring rod, a spiral stirring blade, and a connecting rod are installed inside the mixing hopper. A stirring motor is installed outside the mixing hopper, and its output shaft is coaxially connected to the stirring rod. Two support plates are provided at the top of the mixing hopper. A detachable feeding container is also included. An opening and closing door is provided at the bottom of the feeding container. A control mechanism for opening and closing the opening and closing door is provided inside the mixing hopper. When adding powder, the powder can be first added to the feeding container, and then added to the mixing hopper from the feeding container. This eliminates the need for multiple additions as in the prior art and eliminates the need to control the adding speed, resulting in faster adding speed, shorter processing time, and improved production efficiency.

Description

Technical Field

[0001] This invention belongs to the field of mixing equipment technology, and relates to a powder mixing equipment and its mixing process. Background Technology

[0002] Mixing equipment is a type of equipment used in many production processes. Mixing equipment generally has a mixing tank and stirring blades set in the mixing tank. Multiple raw materials in the production process are added to the mixing tank, and the stirring blades stir the raw materials to mix them. Mixing tanks are generally made of stainless steel, which has sufficient strength and corrosion resistance.

[0003] Chinese patent CN218358578U discloses a mixing tank for a trough mixer. Although it solves the problem of dust raising and polluting the processing environment when adding powder in existing mixing equipment, it uses a spoon-shaped feeding structure with a handle. Because the amount of material added each time is limited, the spoon-shaped feeding structure with a handle needs to be used multiple times, resulting in a slow feeding speed and long feeding time, which affects production efficiency. Summary of the Invention

[0004] The purpose of this invention is to provide a powder mixing device and its mixing process, which aims to solve the problems of slow powder addition speed, long time consumption, and reduced production efficiency in existing equipment.

[0005] To solve the above-mentioned technical problems, the present invention provides a powder mixing device, including a base plate, two support plates with inverted L-shaped longitudinal sections arranged parallel to each other on the base plate, and a mixing hopper. The opposite sides of the mixing hopper are respectively connected to the two support plates. The bottom of the mixing hopper has a discharge port and a baffle plate that can be moved to block the discharge port. The mixing hopper is equipped with a stirring rod, a spiral stirring blade, and a connecting rod. The two ends of the connecting rod are respectively connected to the stirring rod and the spiral stirring blade. A stirring motor is installed outside the mixing hopper. The output shaft of the stirring motor is coaxially connected to the stirring rod. Two support plates are horizontally arranged on the top of the mixing hopper. The two support plates and the two side plates of the mixing hopper form a rectangular feeding port. The device also includes a separable feeding container. The four sides of the feeding container are attached to the rectangular feeding port. The bottom of the feeding container is provided with an opening and closing door. A control mechanism for controlling the opening and closing of the opening and closing door is provided inside the mixing hopper.

[0006] Further configured, there are two opening and closing doors, which are symmetrical about the middle of the feeding container. Each of the two opening and closing doors is provided with an opening and closing rod. The two ends of the opening and closing rod are rotatably connected to the inner wall of the feeding container. The opening and closing door located on one side of the opening and closing rod is the first door section, and the opening and closing door located on the other side of the opening and closing rod is the second door section. The width of the first door section is smaller than the width of the second door section. The first door section, the opening and closing rod, the second door section, and the middle of the feeding container are arranged in sequence. A blocking groove is provided at the bottom of the feeding container. When the opening and closing doors are in a horizontal state, the two opening and closing doors close the bottom of the feeding container, and the free end of the first door section abuts against the bottom of the blocking groove. The control mechanism includes multiple first fixed rods disposed on one side of the mixing hopper, multiple second fixed rods disposed on the other side of the mixing hopper, and multiple upward arching members connected at both ends to the first fixed rods and the second fixed rods respectively. The arching members are used to lift the two second door sections.

[0007] Further configured, the side of the support plate is provided with a receiving channel, the output shaft of the stirring motor passes through the receiving channel, and it also includes an elastic element that is continuously compressed, one end of the elastic element is connected to the inner wall of the feeding container, and the other end is connected to the top of the free end of the second door.

[0008] A further configuration includes an openable and closable feeding door at the top of the feeding container, and several parallel and spaced magnetic metal impurity removal strips inside the feeding container, wherein the longitudinal section at the top of the metal impurity removal strips is an upwardly arched arc shape.

[0009] Further configured, the two ends of the metal impurity removal strip pass through the opposite sides of the feeding container, the bottom of the two ends of the metal impurity removal strip located outside the feeding container abut against the top of the support plate, the bottom of both support plates is provided with a magnetic body, the magnetic body is magnetically attracted to the metal impurity removal strip, the bottom of both support plates is provided with a bonding plate that fits against the outer wall of the feeding container, and the side of the magnetic body is connected to the bonding plate.

[0010] Further configured, the magnetic body includes an upper metal strip, a lower metal strip, two spacers separating the upper metal strip and the lower metal strip, an adjusting rod, a plurality of magnetic strips spaced apart along the length of the adjusting rod and connected to the adjusting rod, and an adjusting structure for controlling the rotation of the adjusting rod. The upper metal strip, the lower metal strip, and the two spacers form a cylindrical channel. The adjusting rod is located inside the cylindrical channel, and the plurality of magnetic strips are attached to the inner wall of the cylindrical channel. Both ends of the adjusting rod are rotatably connected to the stirring hopper.

[0011] Further configured, the end of the adjusting rod penetrates the side of the stirring hopper, and the adjusting structure includes two fixing strips disposed on two opposite outer walls of the stirring hopper, two fixing grooves with a longitudinal section of U-shape opened on the two fixing strips, a sliding strip with a longitudinal section of I-shape that slides in cooperation with the two fixing grooves, an adjusting rack connected to the top of the sliding strip, and an adjusting gear disposed at the end of the adjusting rod and meshing with the adjusting rack.

[0012] Further configured, one end of the two sliding bars is connected by an integral rod, and the other end is provided with a termination part. When the termination part contacts the fixed bar, the S-pole of the plurality of magnetic strips is on top. When the integral rod contacts the outer wall of the stirring hopper, the N-pole of the plurality of magnetic strips is on top. A pull member is provided in the middle of the side of the integral rod away from the stirring hopper. The opposite sides of the stirring hopper are linearly connected to the two support plates respectively.

[0013] Further configured, one side of the baffle plate is hinged to the discharge port, a driving cylinder is hinged to the base plate, the piston rod of the driving cylinder is hinged to the free end of the baffle plate, and a plurality of air outlets are provided on the support plate, and an air outlet filter screen is provided to cover the air outlets.

[0014] The present invention also provides a mixing process using the powder mixing equipment described above, comprising the following steps:

[0015] S1. Add powder into the feeding container, the amount of powder being 1 / 2 to 2 / 3 of the volume of the feeding container;

[0016] S2. Place the feeding container into the rectangular feeding port, and control the opening and closing door to open, so that the powder falls from the feeding container into the mixing hopper;

[0017] S3. Repeat S1 and S2, adding other powders or raw materials until the feeding is complete;

[0018] S4. Turn on the stirring motor, and the spiral stirring blades will rotate to mix the added raw materials;

[0019] S5. After mixing is complete, place the container below the discharge port, open the baffle plate, and the mixed raw materials in the mixing hopper fall into the container from the discharge port.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] This invention provides a powder mixing device and a mixing process using the device. When adding powder, the powder can be first added to a feeding container, and then added from the feeding container to a mixing hopper. Firstly, both the feeding container and the mixing hopper are enclosed spaces, so the powder will not be blown into the processing workshop and pollute the workshop environment during the process of adding it from the feeding container to the mixing hopper. Secondly, a single powder can be added to the feeding container at once, eliminating the need for multiple additions as in existing technologies, and eliminating the need to control the adding speed. Therefore, the adding speed is faster, the time consumption is shorter, and production efficiency can be improved. Furthermore, after the powder is added to the feeding container, it can be added to the mixing hopper first and then the mixing can be started, or the mixing can be started first and then the powder added to the mixing hopper during the mixing process, further saving time and improving production efficiency. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of an embodiment of a powder mixing device according to the present invention;

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle;

[0024] Figure 3 yes Figure 1 Enlarged view of point B in the middle;

[0025] Figure 4 This is a cross-sectional view of an embodiment of a powder mixing device according to the present invention. Figure 1 ;

[0026] Figure 5 yes Figure 4 Enlarged view of point C in the middle;

[0027] Figure 6 This is a cross-sectional view of an embodiment of a powder mixing device according to the present invention. Figure 2 ;

[0028] Figure 7 yes Figure 6 Enlarged view of point D in the middle;

[0029] Figure 8 yes Figure 7 Enlarged view at point D1;

[0030] Figure 9 yes Figure 7 Enlarged view at point D2;

[0031] Figure 10 yes Figure 6 Enlarged view at point E in the middle;

[0032] Figure 11 This is a cross-sectional view of the feeding container in the powder mixing equipment of the present invention when the opening and closing door is in the closed state;

[0033] Figure 12 This is a schematic diagram of the structure of the stirring hopper in a powder mixing device according to the present invention;

[0034] Figure 13 yes Figure 12 Enlarged view at point F;

[0035] Figure 14 This is a schematic diagram of the feeding container in a powder mixing device according to the present invention;

[0036] Figure 15 yes Figure 14 Enlarged view of point G in the middle;

[0037] Figure 16 This is a schematic diagram of the opening and closing door in a powder mixing device according to the present invention;

[0038] Figure 17 yes Figure 16 Enlarged view of point H in the middle;

[0039] Figure 18 This is a schematic diagram of the structure of the magnetic body in a powder mixing device according to the present invention;

[0040] Figure 19 yes Figure 18 Enlarged view of point J in the middle;

[0041] Figure 20 This is a schematic diagram of the magnetic body structure in a powder mixing device according to the present invention;

[0042] Figure 21 yes Figure 20 Enlarged view at point K;

[0043] Figure 22 This is a schematic diagram of an integrated rod and sliding bar in a powder mixing device according to the present invention;

[0044] Figure 23 yes Figure 22 Enlarged view of point L in the middle;

[0045] The components include: 1. Base plate; 2. Support plate; 3. Mixing hopper; 4. Discharge port; 5. Baffle plate; 6. Mixing rod; 7. Spiral mixing blade; 8. Connecting rod; 9. Mixing motor; 10. Support plate; 11. Rectangular feeding port; 12. Feeding container; 13. Opening and closing door; 14. Control mechanism; 14a. First fixing rod; 14b. Second fixing rod; 14c. Arching component; 15. Opening and closing rod; 16. First door section; 17. Second door section; 18. Blocking groove; 19. Receiving channel; 20. Elastic component; 1. Feeding gate; 22. Metal impurity removal strip; 23. Magnetic body; 23a. Upper metal strip; 23b. Lower metal strip; 23c. Spacer; 23d. Adjusting rod; 23e. Magnetic strip; 24f. Adjustment structure; 24f1. Fixing strip; 24f2. Fixing groove; 24f3. Sliding strip; 24f4. Adjusting rack; 24f5. Adjusting gear; 24. Adhesive plate; 25. Integrated rod; 26. Termination part; 27. Pulling part; 28. Drive cylinder; 29. ​​Air outlet; 30. Air outlet filter. Detailed Implementation

[0046] The following detailed description, in conjunction with the accompanying drawings and specific embodiments, provides a further detailed explanation of the powder mixing equipment and its mixing process proposed in this invention. The advantages and features of this invention will become clearer from the following description. It should be noted that the drawings are all in a very simplified form and use non-precise proportions, and are only used to facilitate and clarify the illustration of the embodiments of this invention. The same or similar reference numerals in the drawings represent the same or similar parts.

[0047] This invention provides a powder mixing device, such as... Figures 1 to 23 As shown, the device includes a base plate 1, two inverted L-shaped support plates 2 arranged parallel to each other on the base plate 1, and a stirring hopper 3. The two opposite sides of the stirring hopper 3 are connected to the two support plates 2 respectively. The bottom of the stirring hopper 3 has a discharge port 4 and a baffle plate 5 that can be moved to block the discharge port 4. Inside the stirring hopper 3 are a stirring rod 6, a spiral stirring blade 7, and a connecting rod 8. The two ends of the connecting rod 8 are connected to the stirring rod 6 and the spiral stirring blade 7 respectively. The outside of the stirring hopper 3 is... The mixing hopper 3 includes a stirring motor 9, the output shaft of which is coaxially connected to the stirring rod 6. Two support plates 10 are horizontally arranged on the top of the mixing hopper 3, and the two support plates 10 and the two side plates of the mixing hopper 3 form a rectangular feeding port 11. The mixing hopper 3 also includes a separable feeding container 12, the four sides of which are in contact with the rectangular feeding port 11. The bottom of the feeding container 12 is provided with an opening and closing door 13, and the mixing hopper 3 is provided with a control mechanism 14 for controlling the opening and closing of the opening and closing door 13.

[0048] refer to Figure 7 , Figure 9 , Figure 11 , Figure 14 , Figure 15 , Figure 16 as well as Figure 17 Two opening and closing doors 13 are provided, symmetrical about the middle of the feeding container 12. Each door 13 is equipped with an opening and closing rod 15, the two ends of which are rotatably connected to the inner wall of the feeding container 12. The door 13 located on one side of the opening and closing rod 15 is a first door portion 16, and the door 13 located on the other side is a second door portion 17. The width of the first door portion 16 is smaller than the width of the second door portion 17. The first door 16, the opening and closing rod 15, the second door 17, and the feeding container 12 are arranged sequentially in the middle. The bottom of the feeding container 12 has a blocking groove 18. When the opening and closing door 13 is in a horizontal state, the two opening and closing doors 13 close the bottom of the feeding container 12, and the free end of the first door 16 abuts against the bottom of the blocking groove 18. The control mechanism 14 includes multiple first fixing rods 14a disposed on one side of the stirring hopper 3, and a rod disposed on the stirring... On the other side of the hopper 3, there are multiple second fixing rods 14b and multiple upwardly arched members 14c whose ends are respectively connected to the first fixing rod 14a and the second fixing rod 14b. The arched members 14c are used to lift the two second doors 17. After the powder is added to the feeding container 12, since the width of the second door 17 is greater than the width of the first door 16, the second door 17 bears more of the weight of the powder relative to the first door 16. This difference in weight causes the second door 17 to have As the material rotates downwards, the first door 16 rotates upwards until it is in contact with the bottom of the blocking groove 18. At this time, the two opening and closing doors 13 are in a horizontal state and closed. When feeding, as the height of the feeding container 12 decreases, the second door 17 comes into contact with the arch member 14c. The arch member 14c lifts up the two second doors 17. As the first door 16 rotates downwards, the first door 16 is no longer in contact with the blocking groove 18. The powder falls between the first door 16 and the blocking groove 18 under the action of gravity, thus realizing feeding.

[0049] refer to Figure 3 and Figure 7 The side of the support plate 2 is provided with a receiving channel 19, through which the output shaft of the stirring motor 9 passes. It also includes an elastic element 20 (such as a spring) that is continuously compressed. One end of the elastic element 20 is connected to the inner wall of the feeding container 12, and the other end is connected to the top of the free end of the second door 17. The elastic element 20, which is continuously compressed, can apply a force to rotate the second door 17 downward. After feeding, when the height of the entire feeding container 12 is raised to a point where it is not in contact with the arched part 14c, it is convenient for the two opening and closing doors 13 to close.

[0050] refer to Figure 4 , Figure 5, Figure 7 or Figure 11 The top of the feeding container 12 is provided with an openable feeding door 21 (which is hinged to the feeding container 12 on one side). Inside the feeding container 12 are several parallel, spaced-apart magnetic metal impurity removal strips 22. The top longitudinal section of each metal impurity removal strip 22 is an upwardly arched arc shape. During feeding, the feeding door 21 is opened, and powder is fed into the feeding container 12. The powder passes through the metal impurity removal strips 22, and the spaced-apart strips adsorb the metal impurities in the powder. Therefore, the multiple metal impurity removal strips 22 effectively remove metal impurities from the powder. Furthermore, the upwardly arched arc shape of the top longitudinal section of each metal impurity removal strip 22 causes powder falling onto the top of the strip to slide down without accumulating, thus providing the advantage of preventing material buildup.

[0051] refer to Figure 1 and Figure 14 The two ends of the metal impurity removal strip 22 pass through the opposite sides of the feeding container 12. The bottom ends of the metal impurity removal strip 22 located outside the feeding container 12 abut against the top of the support plate 10. Magnetic bodies 23 are provided at the bottom of both support plates 10. The magnetic bodies 23 are magnetically attracted to the metal impurity removal strip 22. After adding a certain weight of powder to the feeding container 12, care should be taken not to fill the feeding container 12 completely, as this will affect the subsequent opening of the opening and closing door 13. The feeding container 12 is placed downwards from the rectangular feeding port 11 until it contacts the second door 17 and the arched part 14c. Due to the relatively high fluidity of the powder... The arched part 14c, when lifting the second door 17, needs to overcome the weight of the powder added to the feeding container 12, thus making it difficult to open the opening door 13 quickly or smoothly. At this time, the magnet and the metal impurity removal strip 22 are magnetically attracted, and the magnetic attraction provides a downward force to the feeding container 12, making it easier and smoother to open the opening door 13. The bottom of the two support plates 10 is provided with a bonding plate 24 that fits against the outer wall of the feeding container 12. The side of the magnetic body 23 is connected to the bonding plate 24. The bonding plate 24 can further limit the feeding container 12 and make the position of the magnetic body 23 more stable. The support plates 10 and the bonding plate 24 are preferably made of non-magnetic materials, such as plastic, copper, or aluminum alloy.

[0052] refer to Figure 8 and Figure 18The magnetic body 23 includes an upper metal strip 23a, a lower metal strip 23b, two spacers 23c (non-magnetic material) separating the upper metal strip 23a and the lower metal strip 23b, an adjusting rod 23d, a plurality of magnetic strips 23e connected to the adjusting rod 23d and spaced apart along the length of the adjusting rod 23d, and an adjusting structure 24f for controlling the rotation of the adjusting rod 23d. The upper metal strip 23a, the lower metal strip 23b, and the two spacers 23c form a cylindrical channel. The adjusting rod 23d is located inside the cylindrical channel, and the plurality of magnetic strips 23e are attached to the inner wall of the cylindrical channel. The two ends of the adjusting rod 23d are rotatably connected to the stirring hopper 3. After the feeding and mixing are completed, when the feeding container 12 needs to be removed, the adjusting structure 24f controls the adjusting rod 23d to rotate 180°, and at the same time changes the polarity direction of multiple magnetic strips 23e. At this time, the magnetic body 23 and the metal impurity removal strip 22, which were originally attracted to each other, become like poles that repel each other. This not only applies an upward force to the feeding container 12, making it easier to remove the feeding container 12, but also raises the metal impurity removal strip 22 to a certain height under the force of like poles, making it easier for workers to reach under the metal impurity removal strip 22 to apply force.

[0053] The top of the upper metal strip 23a is planar, and it is close to the metal impurity removal strip 22, thus having a larger effective area. Therefore, the metal impurity removal strip 22 can be better acted upon regardless of whether it is subjected to attraction or repulsion.

[0054] refer to Figure 5 , Figure 13 , Figure 19 , Figure 20 , Figure 21 and Figure 23 The end of the adjusting rod 23d penetrates the side of the stirring hopper 3. The adjusting structure 24f includes two fixed bars 24f1 set on two opposite outer walls of the stirring hopper 3, two fixed grooves 24f2 with a longitudinal section of U-shape opened on the two fixed bars 24f1, a sliding bar 24f3 with a longitudinal section of I-shape that slides in cooperation with the two fixed grooves 24f2, an adjusting rack 24f4 connected to the top of the sliding bar 24f3, and an adjusting gear 24f5 set on the end of the adjusting rod 23d and meshing with the adjusting rack. Pulling the sliding bar 24f3 causes the adjusting rack 24f4 to slide, which drives the adjusting gear 24f5 to rotate, which in turn drives the adjusting rod 23d to rotate. The rotation of the adjusting rod 23d drives the multiple magnetic strips 23e set on the adjusting rod 23d to rotate, thereby changing the polarity direction of the magnetic body 23 and playing different roles as described above at different stages of feeding.

[0055] refer to Figure 6 and 22One end of each of the two sliding bars 24f3 is connected by an integral rod 25, and the other end is provided with a termination part 26. When the termination part 26 contacts the fixed bar 24f1, the S-pole of the multiple magnetic bars 23e is on top. When the integral rod 25 contacts the outer wall of the stirring hopper 3, the N-pole of the multiple magnetic bars 23e is on top. This allows the adjusting rod 23d to directly adjust the polarity of the magnetic body 23. A pulling member 27 is provided in the middle of the side of the integral rod 25 away from the stirring hopper 3, which facilitates pulling the integral rod 25. The integral rod 25 facilitates the simultaneous sliding of the two sliding bars 24f3 and ensures the consistency of the sliding of the two sliding bars 24f3. The opposite sides of the stirring hopper 3 are linearly connected to the two support plates 2 respectively. When the integral rod 25 is pulled, the linear connection makes the position of the stirring hopper 3 more stable and reduces the torque between the stirring hopper 3 and the support plate 2.

[0056] refer to Figure 1 and 10 One side of the baffle plate 5 is hinged to the discharge port 4. A drive cylinder 28 is hinged on the bottom plate 1. The piston rod of the drive cylinder 28 is hinged to the free end of the baffle plate 5. After the mixing is completed, the drive cylinder 28 is opened, the piston rod retracts and drives the baffle plate 5 to open, and the mixed raw materials in the mixing hopper 3 fall from the discharge port 4. Several air outlets 29 are provided on the support plate 10. Several air outlets 29 are provided with air filter screens 30 (very fine, so that the powder will not leak out) covering the air outlets 29. When the powder falls from the feeding container 12 to the mixing hopper 3, the powder will squeeze some of the air in the mixing hopper 3. During this process, the air can pass through the air filter screens 30, so that the powder falls more smoothly into the mixing hopper 3.

[0057] Usage: Open the feeding door 21 and pour the powder into the feeding container 12. The metal impurity removal strip 22 can adsorb metal impurities in the powder. Then close the feeding door 21 and insert the feeding container 12 through the rectangular feeding port 11. As the feeding container 12 descends, the second door 17 comes into contact with the arched member 14c. The arched member 14c lifts the two second door 17. Since the powder is not fluid, the opposite attraction between the metal impurity removal strip 22 and the magnetic body 23 will exert a downward force on the feeding container 12, which helps the arched member 14c lift the second door 17, assisting in feeding. As the first door 16 rotates downward, the first door 16 is no longer in contact with the blocking groove 18. The powder falls between the first door 16 and the blocking groove 18 under the action of gravity, thus achieving feeding. After feeding is completed, turn on the stirring motor 9 and the output shaft. The rotation of the stirring rod 6 causes the connecting rod 8 to rotate, which in turn causes the spiral stirring blade 7 to rotate and mix the materials. After mixing, the stirring motor 9 is turned off. A container (not shown) is placed on the bottom plate 1 below the discharge port 4. The drive cylinder 28 is turned on, and the piston rod causes the baffle plate 5 to retract. The mixed powder in the mixing hopper 3 falls into the container from the discharge port 4. When the feeding container 12 needs to be removed for the second feeding, the pulling part 27 can be pulled to drive the integrated rod 25, which in turn causes the sliding bar 24f3 to slide. The adjusting rack 24f4 then slides, and the adjusting gear 24f5 rotates. The adjusting rod 23d then rotates. When it rotates 180°, the polarity of the magnetic body 23 changes. At this time, the magnetic body 23 and the metal impurity removal strip 22, which were originally attracted to each other, become like poles that repel each other, applying an upward force to the feeding container 12. At this time, it will be easier to remove the feeding container 12.

[0058] This invention also provides a mixing process using the powder mixing equipment described above, comprising the following steps:

[0059] S1. Powder is added into the feeding container 12, and the amount of powder added is 1 / 2 to 2 / 3 of the volume of the feeding container 12;

[0060] S2. Place the feeding container 12 into the rectangular feeding port 11, and control mechanism 14 controls the opening and closing door 13 to open, so that the powder falls from the feeding container 12 into the stirring hopper 3;

[0061] S3. Repeat S1 and S2, adding other powders or raw materials until the feeding is complete;

[0062] S4. Turn on the stirring motor 9, and the spiral stirring blade 7 will rotate to mix the added raw materials;

[0063] S5. After mixing is complete, place the container below the discharge port 4, open the baffle plate 5, and the mixed raw materials in the mixing hopper 3 fall into the container from the discharge port 4.

[0064] Using the powder mixing equipment described above for the mixing process of the above steps, when adding powder, the powder can first be added to the feeding container 12, and then added from the feeding container 12 to the mixing hopper 3. On the one hand, both the feeding container 12 and the mixing hopper 3 are enclosed spaces, so the powder will not be blown into the processing workshop and pollute the workshop environment. On the other hand, one powder can be added to the feeding container 12 at once, without the need for multiple additions as in the prior art, and there is no need to control the feeding speed. Therefore, the feeding speed is faster and the time consumption is shorter, which can improve production efficiency. Furthermore, after the powder is added to the feeding container 12, the powder can be added to the mixing hopper 3 first and then the mixing can be started, or the mixing can be started first and then the powder can be added to the mixing hopper 3 during the mixing process, which further saves time and improves production efficiency.

[0065] Moreover, in actual use, when the mixing hopper 3 is adding powder, the empty external feeding container 12 can simultaneously add new powder. Thus, when the external feeding container 12 needs to be used, it can be used directly. Therefore, the powder addition is continuously available, thereby ensuring the efficiency of powder addition.

[0066] The above description is merely a description of preferred embodiments of the present invention and is not intended to limit the scope of the present invention in any way. Any changes or modifications made by those skilled in the art based on the above disclosure shall fall within the protection scope of the claims.

Claims

1. A powder mixing device, characterized in that, The system includes a base plate (1), two support plates (2) with inverted L-shaped longitudinal sections arranged parallel to each other on the base plate (1), and a stirring hopper (3). The two opposite sides of the stirring hopper (3) are connected to the two support plates (2). The bottom of the stirring hopper (3) has a discharge port (4) and a baffle plate (5) that can be moved to block the discharge port (4). Inside the stirring hopper (3) are a stirring rod (6), a spiral stirring blade (7), and a connecting rod (8). The two ends of the connecting rod (8) are connected to the stirring rod (6) and the spiral stirring blade (7), respectively. The outside of the stirring hopper (3) is provided with... The mixing hopper (3) has a stirring motor (9), the output shaft of which is coaxially connected to the stirring rod (6). The top of the mixing hopper (3) is horizontally provided with two support plates (10), which together with the two side plates of the mixing hopper (3) form a rectangular feeding port (11). The mixing hopper (3) also includes a separable feeding container (12), the four sides of which are in contact with the rectangular feeding port (11). The bottom of the feeding container (12) is provided with an opening and closing door (13), and the mixing hopper (3) is provided with a control mechanism (14) for controlling the opening and closing of the opening and closing door (13). Two opening and closing doors (13) are provided, and the two opening and closing doors (13) are symmetrical about the middle part of the feeding container (12). Each of the two opening and closing doors (13) is provided with an opening and closing rod (15). The two ends of the opening and closing rod (15) are rotatably connected to the inner wall of the feeding container (12). The opening and closing door (13) located on one side of the opening and closing rod (15) is the first door part (16), and the opening and closing door (13) located on the other side of the opening and closing rod (15) is the second door part (17). The width of the first door part (16) is smaller than the width of the second door part (17). The first door part (16), the opening and closing rod (15), the second door part (17), and the middle part of the feeding container (12) are arranged in sequence. The bottom of the material container (12) is provided with a blocking groove (18). When the opening and closing door (13) is in a horizontal state, the two opening and closing doors (13) close the bottom of the material container (12) and the free end of the first door (16) abuts against the bottom of the blocking groove (18). The control mechanism (14) includes a plurality of first fixing rods (14a) disposed on one side of the stirring hopper (3), a plurality of second fixing rods (14b) disposed on the other side of the stirring hopper (3), and a plurality of upward arching members (14c) connected at both ends to the first fixing rods (14a) and the second fixing rods (14b) respectively. The arching members (14c) are used to lift the two second doors (17). The feeding container (12) is equipped with several parallel and spaced magnetic metal impurity removal strips (22); The two ends of the metal impurity removal strip (22) pass through the opposite sides of the feeding container (12). The bottom of the two ends of the metal impurity removal strip (22) located outside the feeding container (12) respectively abuts against the top of the support plate (10). The bottom of both support plates (10) is provided with a magnetic body (23). The magnetic body (23) is magnetically attracted to the metal impurity removal strip (22). The bottom of both support plates (10) is provided with a bonding plate (24) that fits against the outer wall of the feeding container (12). The side of the magnetic body (23) is connected to the bonding plate (24). The magnetic body (23) includes an upper metal strip (23a), a lower metal strip (23b), two spacers (23c) separating the upper metal strip (23a) and the lower metal strip (23b), an adjusting rod (23d), a plurality of magnetic strips (23e) spaced apart along the length of the adjusting rod (23d) and connected to the adjusting rod (23d), and an adjusting structure (24f) for controlling the rotation of the adjusting rod (23d). The upper metal strip (23a), the lower metal strip (23b) and the two spacers (23c) form a cylindrical channel. The adjusting rod (23d) is located inside the cylindrical channel. The plurality of magnetic strips (23e) are attached to the inner wall of the cylindrical channel. The two ends of the adjusting rod (23d) are rotatably connected to the stirring bucket (3).

2. The powder mixing equipment according to claim 1, characterized in that, The side of the support plate (2) is provided with a receiving channel (19), the output shaft of the stirring motor (9) passes through the receiving channel (19), and also includes an elastic element (20) that is continuously in a compressed state. One end of the elastic element (20) is connected to the inner wall of the feeding container (12), and the other end is connected to the top of the free end of the second door (17).

3. The powder mixing equipment according to claim 1, characterized in that, The top of the feeding container (12) is provided with an openable feeding door (21), and the top longitudinal section of the metal impurity removal strip (22) is an upwardly arched arc shape.

4. The powder mixing equipment according to claim 1, characterized in that, The end of the adjusting rod (23d) penetrates the side of the stirring bucket (3). The adjusting structure (24f) includes two fixed bars (24f1) disposed on two opposite outer walls of the stirring bucket (3), two fixed grooves (24f2) with a longitudinal section of U-shape opened on the two fixed bars (24f1), a sliding bar (24f3) with a longitudinal section of I-shape that slides in cooperation with the two fixed grooves (24f2), an adjusting rack (24f4) connected to the top of the sliding bar (24f3), and an adjusting gear (24f5) disposed at the end of the adjusting rod (23d) and meshing with the adjusting rack (24f4).

5. The powder mixing equipment according to claim 4, characterized in that, One end of each of the two sliding bars (24f3) is connected by an integral rod (25), and the other end is provided with a termination part (26). When the termination part (26) contacts the fixed bar (24f1), the S-level of the multiple magnetic strips (23e) is on top. When the integral rod (25) contacts the outer wall of the stirring bucket (3), the N-level of the multiple magnetic strips (23e) is on top. A pull member (27) is provided in the middle of the side of the integral rod (25) away from the stirring bucket (3). The opposite sides of the stirring bucket (3) are linearly connected to the two support plates (2) respectively.

6. The powder mixing equipment according to claim 1, characterized in that, One side of the baffle plate (5) is hinged to the discharge port (4). A drive cylinder (28) is hinged on the bottom plate (1). The piston rod of the drive cylinder (28) is hinged to the free end of the baffle plate (5). A plurality of air outlets (29) are provided on the support plate (10). A filter screen (30) covering the air outlets (29) is provided on the plurality of air outlets (29).

7. A mixing process using the powder mixing equipment as described in any one of claims 1 to 6, characterized in that, Includes the following steps: S1. Powder is added into the feeding container (12), and the amount of powder added is 1 / 2 to 2 / 3 of the volume of the feeding container (12); S2. Place the feeding container (12) into the rectangular feeding port (11), and control mechanism (14) controls the opening and closing door (13) to open, so that the powder falls from the feeding container (12) into the mixing hopper (3); S3. Repeat S1 and S2 to add other powders or raw materials until the feeding is complete; S4. Turn on the stirring motor (9), and the spiral stirring blade (7) will rotate to mix the added raw materials; S5. After mixing, place the container below the discharge port (4) and open the baffle plate (5). The mixed raw materials in the mixing hopper (3) fall into the container from the discharge port (4).

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