Mixing and stirring device for magnesium oxide powder

Abstract

The utility model belongs to powder mixing equipment technical field especially magnesium oxide powder proportioning uses mixing stirring device, including frame, mixing cylinder, feed tank and the measuring tool that is located in the box, measuring tool one side is connected the handle through pull rod, its bottom is hinged with rotating bottom plate, the support roller that is located below measuring tool is established in feed tank, drive measuring tool along sliding block and limit sliding rail guide horizontal movement through push -and -pull handle, when measuring tool is aligned feed port, support roller lifts rotating bottom plate and closes measuring tool bottom to carry out the material receiving of measuring tool, utilize rigid support to overcome the unexpected opening of raw material gravity, after moving away measuring tool, rotating bottom plate is separated from support roller and under the action of gravity automatic uncovering unloading. The utility model has the advantages of simple structure, convenient operation, fundamentally solve the problem of unexpected leakage of measuring tool bottom because of raw material weight gain in the proportioning process.

Description

Technical Field

[0001] This utility model relates to the technical field of powder mixing equipment, and in particular to a mixing and stirring device for proportioning magnesium oxide powder. Background Technology

[0002] In the processing of magnesium oxide powder, it is often necessary to mix powders from different batches or with different properties in a certain proportion to ensure the uniformity and stability of the final product. A mixing and stirring device is the key equipment for achieving this process.

[0003] Existing mixing devices typically include a support platform, a mixing tank, a feed hopper, and a feed inlet. To facilitate precise control of the amount of different raw materials added, some devices are equipped with measuring components, such as a movable measuring cylinder. Chinese Patent CN221310213U discloses a mixing device for proportioning magnesium oxide powder. This device uses a measuring component and a drive component. The drive component moves the measuring component within the feed hopper to below the feed inlet to receive the material. A nylon rope controls the opening and closing of a first baffle at the bottom of the measuring cylinder. This design aims to simplify operation, save manpower, and cover the feed inlet during mixing to prevent dust from flying out.

[0004] However, this existing technical solution has significant drawbacks: the first baffle at the bottom of the measuring cylinder is kept closed by the tension of a nylon rope, and the threaded rod and threaded groove mating structure in the drive assembly lacks a self-locking function. As the amount of material in the measuring cylinder gradually increases, the force exerted on the baffle by the weight of the material also increases. This gravity acts in the opposite direction on the drive turntable through the nylon rope, causing the turntable and threaded rod to rotate in opposite directions, resulting in the first baffle opening unexpectedly. This fails to effectively seal the bottom of the measuring cylinder, causing premature leakage of material and seriously affecting the accuracy of the proportioning and the reliability of the operation. Therefore, there is an urgent need for a mixing and stirring device that can stably keep the bottom of the measuring instrument closed when receiving material. Utility Model Content

[0005] Based on the technical problems existing in the prior art, this utility model proposes a mixing and stirring device for the proportioning of magnesium oxide powder.

[0006] This utility model discloses a mixing and stirring device for proportioning magnesium oxide powder, comprising a frame, a mixing cylinder fixed to the top of the frame, a feed box fixed to the outer circumference of the mixing cylinder, and a measuring tool disposed in the feed box. The top of the feed box has a feed inlet. A pull rod is fixedly connected to one side of the measuring tool, and the end of the pull rod extends out of the feed box and is connected to a handle. A support roller is disposed inside the feed box, below the measuring tool. The bottom of the measuring tool is connected to a rotating base plate that can rotate toward the support roller via a hinge. When the measuring tool is pulled horizontally to directly below the feed inlet by the pull rod, the support roller pushes the rotating base plate upward to close the bottom of the measuring tool. When the measuring tool is pushed away from below the feed inlet, the rotating base plate disengages from the support roller and rotates downward to open under the action of gravity.

[0007] Preferably, the measuring tool has sliders fixed to its front and rear outer walls, and the inner wall of the feed box has a limiting slide rail that cooperates with the sliders, and the sliders are slidably connected to the limiting slide rails.

[0008] Preferably, both ends of the support roller are rotatably connected to the inner wall of the feed box via support roller mounting seats.

[0009] Preferably, a discharge port is provided below the circumferential outer wall of the mixing cylinder, and an arc-shaped door plate is installed at the discharge port; a guide plate located below the discharge port is fixed on the frame.

[0010] Preferably, a motor is fixedly installed on one side of the top of the frame, and a stirring shaft driven by the motor passes through the mixing cylinder, with a stirring paddle installed on the stirring shaft.

[0011] Preferably, a sealing plate is fixed to the top of the measuring instrument on the side near the feed inlet; when the measuring instrument is in the initial position, the sealing plate blocks the bottom of the feed inlet.

[0012] Preferably, the support roller is fitted with an elastic sleeve.

[0013] Compared with the prior art, the present invention provides a mixing and stirring device for proportioning magnesium oxide powder, which has the following beneficial effects: 1. By using a structure in which the support rollers set in the feed box cooperate with the rotating base plate hinged to the bottom of the measuring tool, the horizontal movement of the measuring tool is converted into the opening and closing action of the rotating base plate. When the measuring tool moves to the receiving station, the support rollers passively lift and close the rotating base plate. This closed state is directly maintained by the rigid support of the support rollers, rather than relying on the tension of the rope and the self-locking of the threads, which fundamentally solves the technical problem of the baffle opening accidentally due to the increase of the weight of the raw material.

[0014] 2. By setting an elastic sleeve on the support roller, not only is the impact when the rotating base plate contacts the support roller buffered, but the upward elastic force generated also increases the friction between the slider and the slide rail, which plays a role in assisting to lock the position of the measuring tool when receiving materials, further improving the operational stability.

[0015] 3. The entire measuring and bottom opening and closing mechanism has a simple structure, requiring no complex drive and locking devices. All actions can be completed by manually pushing and pulling the measuring tool, making it easy to operate and reducing manufacturing costs and failure rates. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a schematic diagram of the internal structure of the mixing cylinder of this utility model; Figure 3 This is a schematic diagram of the structure of the measuring tool of this utility model when it is not aligned with the feed inlet; Figure 4 This is a schematic diagram of the structure of the measuring tool and the feed inlet of this utility model when they are aligned.

[0017] In the diagram: 1. Frame; 2. Mixing cylinder; 3. Feed box; 31. Feed box top plate; 311. Feed inlet; 4. Measuring tool; 5. Pull rod; 6. Handle; 7. Rotating base plate; 8. Support roller; 9. Limiting slide rail; 10. Slider; 11. Elastic sleeve; 12. Support roller mounting base; 13. Arc-shaped door panel; 14. Guide plate; 15. Stirring shaft; 16. Stirring paddle; 17. Motor; 18. Sealing plate; 19. Discharge port. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] In the description of this utility model, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0020] Please see Figures 1 to 4The present invention discloses a mixing and stirring device for proportioning magnesium oxide powder. The supporting and mixing part includes a frame 1, which serves as the basic support structure of the entire device. A mixing cylinder 2 is fixedly installed at the top center of the frame 1. A feed box 3 is fixed above the outer circumference of the mixing cylinder 2 by welding or bolting. A feed box top plate 31 is provided on the top of the feed box 31, and one or more feed ports 311 are provided on the feed box top plate 31 for feeding in the magnesium oxide powder raw material to be proportioned.

[0021] Feeding and Measuring Section: Inside the feed hopper 3, a horizontally movable measuring instrument 4 is installed. The measuring instrument 4 is typically a cylindrical or box-shaped container with an open top, used to temporarily hold and receive a fixed quantity of raw materials from the feed inlet 311. A pull rod 5 is fixedly connected to one outer wall of the measuring instrument 4. The other end of the pull rod 5 extends horizontally through the side wall of the feed hopper 3 and is fixedly connected to a handle 6. Slider blocks 10 are fixedly installed on the front and rear outer walls of the measuring instrument 4, respectively. Correspondingly, two limiting slide rails 9 adapted to the sliders 10 are fixedly installed on the front and rear side walls of the feed hopper 3. The sliders 10 are slidably embedded in the grooves of the limiting slide rails 9, precisely guiding the measuring instrument 4 to move only in a straight line in the horizontal direction.

[0022] The key improvement of this utility model lies in the opening and closing mechanism at the bottom of the measuring tool 4: A rotating base plate 7 is hinged to the bottom of the measuring tool 4. The shape of the rotating base plate 7 is adapted to the opening at the bottom of the measuring tool 4, and it can rotate around the side where the support roller 8 is located along the hinge axis. At least one support roller 8 is installed inside the feed box 3 and below the moving path of the measuring tool 4. The support roller 8 can be installed in two ways: firstly, both ends of the support roller 8 can be directly fixed to the inner wall of the feed box 3; secondly, both ends of the support roller 8 can be rotatably connected to the inner wall of the feed box 3 through the support roller mounting seat 12. In this case, the support roller 8 can rotate freely to reduce sliding friction with the rotating base plate 7. The position of the support roller 8 is designed such that when the operator uses the handle 6 and the pull rod 5 to move the measuring tool 4 from... Figure 3 The initial position shown is pulled horizontally to Figure 4 When the measuring tool 4 is in the working position shown (i.e., the top opening of the measuring tool 4 is directly below the feed inlet 311), the rotating base plate 7 at the bottom of the measuring tool 4 will gradually come into contact with the support roller 8 during the movement. As the measuring tool 4 continues to move into position, the support roller 8 will push the rotating base plate 7 upward from below, forcing the rotating base plate 7 to rotate upward around the hinge axis, thereby tightly sealing the bottom opening of the measuring tool 4. At this time, the rotating base plate 7 is rigidly supported by the support roller 8 below. No matter how much material is added to the measuring tool 4, the weight of the material is directly transmitted to the support roller 8 and the feed box 3 structure through the rotating base plate 7, without generating any torque or reverse driving force that attempts to open the rotating base plate 7, thus completely solving the problem of the baffle being accidentally opened due to the weight of the material in the prior art.

[0023] After the quantitative addition of a raw material is completed, the operator pushes the handle 6 in the opposite direction to move the measuring tool 4 back to its initial position from below the feed port 311. During this movement, the rotating base plate 7 gradually disengages from the support roller 8. Once completely disengaged, the rotating base plate 7 will naturally rotate downward around the hinge axis under its own weight and the weight of the raw material above it, thereby opening the bottom opening of the measuring tool 4. The raw material that has been measured in the measuring tool 4 will then be poured into the mixing cylinder 2 below it through this open bottom opening.

[0024] To further improve the stability of the measuring tool 4 at the receiving station (i.e., when aligned with the feed inlet), this invention also includes an elastic sleeve 11 fitted on the outer circumference of the support roller 8. The elastic sleeve 11 can be made of highly elastic and wear-resistant materials such as rubber or silicone. When the measuring tool 4 moves to the receiving station and the rotating base plate 7 is lifted and comes into contact with the elastic sleeve 11, the elastic sleeve 11 undergoes compression deformation. The elastic restoring force generated by this deformation not only acts as a buffer but, more importantly, applies a vertically upward supporting force component to the measuring tool 4 as a whole through the rotating base plate 7. This upward force is transmitted to the sliders 10 on both sides of the measuring tool 4, making the sliders 10 press more tightly against the upper surface or inner wall of the groove of the limiting slide rail 9, significantly increasing the static friction between the sliders 10 and the limiting slide rail 9, making the measuring tool 4 more stable and less prone to slippage when receiving materials.

[0025] In addition, a sealing plate 18 is fixedly connected to the top of the measuring instrument 4 on the side near the feed inlet 311. When the measuring instrument 4 is pushed back... Figure 3 When the initial position is shown, the sealing plate 18 blocks the feed inlet 311 from below. When all the raw materials are added and mixing begins, the dust flying in the mixing drum 2 cannot escape in the opposite direction through the feed inlet 311 to the feed box 3 or the outside of the equipment.

[0026] The mixing drum 2 is equipped with a stirring mechanism: a motor 17 is fixedly mounted on one side of the top of the frame 1 via a motor mounting bracket. The output shaft of the motor 17 is connected to a horizontally positioned stirring shaft 15 via a coupling or reducer. The two ends of the stirring shaft 15 are rotatably connected to the frame 1 via bearings. The stirring shaft 15 runs horizontally through the interior of the mixing drum 2. Several stirring paddles 16 are installed on the stirring shaft 15 at axial intervals. When the motor 17 starts, it drives the stirring shaft 15 to rotate, thereby driving the stirring paddles 16 to perform forced shearing, convection, and diffusion mixing of the magnesium oxide powder in the mixing drum 2.

[0027] After mixing, unloading is required. Specifically, a discharge port 19 is provided on the lower part of the outer circumference of the mixing cylinder 2. An arc-shaped door plate 13 that can be opened and closed is installed at the discharge port 19. The arc-shaped door plate 13 can be operated by a manual latch, screw handle, or electric push rod to open and close the discharge port. On the frame 1, directly below the discharge port 19, a guide plate 14 is fixedly installed, with the guide plate 14 inclined downwards. When the arc-shaped door plate 13 is opened, the uniformly mixed magnesium oxide powder mixture is discharged from the discharge port 19 under the action of gravity, falls onto the guide plate 14, and slides down the inclined surface of the guide plate 14 into the designated receiving container or conveying equipment, completing the entire proportioning and mixing process.

[0028] Working principle: First, the operator uses the handle 6 and pull rod 5 to horizontally pull the measuring tool 4 directly below the first feed port 311. At this time, the rotating base plate 7 at the bottom of the measuring tool 4 is lifted by the support roller 8, sealing the bottom of the measuring tool 4. The first type of magnesium oxide powder is added to the required amount through the feed port 311. Then, the measuring tool 4 is pushed back to the initial position, and the rotating base plate 7 automatically opens after disengaging from the support roller 8, allowing the first raw material to fall into the mixing drum 2. Next, the above steps are repeated, pulling the measuring tool 4 to the next feed port (if any) or the same feed port to add the second, third, and so on raw materials. After all raw materials have been added, the measuring tool 4 is reset, the sealing plate 18 re-seals the feed port, and the motor 17 is started, driving the stirring shaft 15 and the stirring paddle 16 to rotate, thoroughly mixing the various powders in the mixing drum 2. After uniform mixing, the motor 17 is stopped, the arc-shaped door plate 13 is opened, and the mixed material is discharged through the discharge port 19 and collected along the guide plate 14, thus completing the batch mixing operation of magnesium oxide powder.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A mixing and stirring device for proportioning magnesium oxide powder, comprising a frame (1), a mixing cylinder (2) fixed to the top of the frame (1), a feed box (3) fixed above the outer circumference of the mixing cylinder (2), and a measuring tool (4) disposed in the feed box (3), wherein the top of the feed box (3) is provided with a feed inlet (311), and a pull rod (5) is fixedly connected to one side of the measuring tool (4), the end of the pull rod (5) protruding from the feed box (3) and connected to a handle (6), characterized in that: Inside the feed box (3), below the measuring tool (4), there is a support roller (8); the bottom of the measuring tool (4) is connected by a hinge to a rotating base plate (7) that can rotate toward the support roller (8); when the measuring tool (4) is pulled horizontally to the feed port (311) by the pull rod (5), the support roller (8) pushes the rotating base plate (7) upward to close the bottom of the measuring tool (4); when the measuring tool (4) is pushed away from below the feed port (311), the rotating base plate (7) disengages from the support roller (8) and rotates downward to open under the action of gravity.

2. The mixing and stirring device for proportioning magnesium oxide powder according to claim 1, characterized in that: The measuring tool (4) has sliders (10) fixed on its front and rear outer walls respectively. The feed box (3) has a limiting slide rail (9) that cooperates with the slider (10) fixed on its inner wall. The slider (10) is slidably connected to the limiting slide rail (9).

3. The mixing and stirring device for proportioning magnesium oxide powder according to claim 1, characterized in that: The two ends of the support roller (8) are rotatably connected to the inner wall of the feed box (3) through the support roller mounting seat (12).

4. The mixing and stirring device for proportioning magnesium oxide powder according to claim 1, characterized in that: The mixing cylinder (2) has a discharge port (19) below its circumferential outer wall, and an arc-shaped door panel (13) is installed at the discharge port (19); a guide plate (14) located below the discharge port (1) is fixed on the frame (1).

5. The mixing and stirring device for proportioning magnesium oxide powder according to claim 1, characterized in that: A motor (17) is fixedly installed on one side of the top of the frame (1), and a stirring shaft (15) driven by the motor (17) is inserted inside the mixing cylinder (2), and a stirring paddle (16) is installed on the stirring shaft (15).

6. The mixing and stirring device for proportioning magnesium oxide powder according to claim 1, characterized in that: The measuring instrument (4) has a sealing plate (18) fixed on the top of the side near the feed inlet (311); when the measuring instrument (4) is in the initial position, the sealing plate (18) blocks the bottom of the feed inlet (311).

7. A mixing and stirring device for proportioning magnesium oxide powder according to any one of claims 1 to 6, characterized in that: The support roller (8) is fitted with an elastic sleeve (11).

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