Powder adding structure of stirrer

Abstract

The powder adding structure of the stirrer comprises the stirrer, a material conveying device and a material bin, wherein the stirrer is provided with a stirring barrel; a feeding hole is formed in the bottom of the stirring barrel; the material conveying device is provided with an input port and an output port; the material conveying device is used for conveying materials from the input port to the output port; the output port is connected with the feeding port and is used for conveying materials conveyed to the output port to the bottom in the stirring barrel; a plurality of material bins; and the plurality of material bins are connected with the same input port through feeding pipes. Materials in the multiple material bins are conveyed to the bottom in the stirring barrel through the material conveying device, so that the materials are gradually stacked at the bottom after entering the stirring barrel, the materials cannot fall down when entering the stirring barrel, and therefore a large amount of dust is prevented from being raised in the powder feeding process from top to bottom; the problems of environmental pollution, adhesion of the powder to the top of the stirrer and accumulation of the powder falling on a stirring tool are reduced, the material mixing quality is improved, and a more uniform stirring effect is realized.

Description

Technical Field

[0001] This utility model belongs to the field of mixer technology, and in particular relates to a powder addition structure for a mixer. Background Technology

[0002] In the traditional cement product manufacturing process, powder mixing typically relies on mixers. However, the structural design of these mixers has certain flaws, leading to numerous problems during the mixing process. In existing technologies, mixers usually have the feed inlet located at the top, allowing powder to be fed into the mixer from above. This method makes it extremely easy for the powder to generate a large amount of dust during the feeding process, causing environmental pollution and allowing the dust to adhere to the top of the mixer, even settling on the mixing tools and forming accumulated material. Especially during the water-spraying mixing stage, the powder, due to being raised and encountering water, is prone to clumping, severely affecting the mixing quality and resulting in uneven mixing, making it difficult to meet the demands of high-quality production. Utility Model Content

[0003] This utility model aims to at least partially solve one of the technical problems in the related art.

[0004] Therefore, one aspect of this application proposes a powder addition structure for a mixer, comprising:

[0005] A mixer having a mixing tank; the bottom of the mixing tank has a feed inlet;

[0006] The material conveying device is equipped with an inlet and an outlet; the material conveying device is used to convey materials from the inlet to the outlet; the outlet is connected to the inlet and is used to send the materials conveyed to the outlet into the bottom of the mixing tank;

[0007] There are multiple material bins; all of them are connected to the same input port through a feed pipe.

[0008] In this technical solution, the structural design utilizes a material conveying device to transport materials from multiple material bins to the bottom of the mixing drum. This allows the materials to gradually accumulate at the bottom of the mixing drum, preventing them from falling as they enter. This avoids the problem of dust being stirred up during the top-down feeding process, reducing environmental pollution and preventing powder from adhering to the top of the mixer or falling onto the mixing tools, thus improving the mixing quality and achieving a more uniform mixing effect. On the other hand, the materials from multiple material bins can be pre-mixed in the material conveying device, thereby reducing the mixing pressure on the mixer, shortening the mixer's operating time, and improving the efficiency of the mixing operation.

[0009] In some embodiments, the feed inlet is located at the bottom of the side wall of the mixing tank, and the bottom end of the feed inlet is flush with the bottom surface of the mixing tank.

[0010] In the technical solution, the structural design ensures that the material can smoothly enter the bottom of the mixing tank, and there is no height difference between the feed inlet and the bottom surface of the mixing tank, ensuring that the material will not generate dust; on the other hand, the feed inlet is set on the side wall, which will not encroach on the space for the discharge port on the bottom plate of the mixing tank, so that there is enough space for the discharge port and its drive structure to be set.

[0011] In some embodiments, the material conveying device is a screw conveyor;

[0012] The screw conveyor includes a conveying pipe, a screw conveyor rod axially arranged in the conveying pipe, and a conveying motor arranged at one end of the conveying pipe for driving the screw conveyor rod to rotate;

[0013] The input port is located at one end of the conveying pipe near the conveying motor, and the output port is located at the other end of the conveying pipe.

[0014] In this technical solution, the structural design uses the rotation of the screw conveyor to make the material move smoothly in the conveying pipe without causing violent agitation, thus avoiding dust and clumping of the powder during the conveying process. On the other hand, the screw conveyor has a strong pushing force on the material, which can push the material into the mixing tank even when a lot of material has accumulated at the bottom of the mixing tank. Furthermore, the blades on the screw conveyor can cover the cross-section of the conveying pipe, preventing the material from flowing back into the conveying pipe when the machine stops running.

[0015] In some embodiments, the output port is located on the end face of the delivery pipe.

[0016] In the technical solution, this structural design facilitates the centralized output of materials, avoids material residue at the output port, and allows the material moving under the push of the screw conveyor to move directly towards the output port, thus smoothly feeding it into the mixing tank and improving the efficiency of material input.

[0017] In some of these embodiments, the delivery pipe is positioned horizontally.

[0018] In the technical solution, the structural design ensures that the material will not accumulate or be obstructed in the conveying pipe due to gravity during the conveying process, thus guaranteeing the stability and continuity of material conveying.

[0019] In some embodiments, it further includes:

[0020] The support frame and the material bin are mounted on the support frame via a weighing sensor; a control gate is installed at the feed outlet at the bottom of the material bin, and the control gate is connected to the feed pipe; both the weighing sensor and the control gate are electrically connected to the controller.

[0021] In this technical solution, the structural design can monitor the weight of materials in the material bin in real time, achieve precise control of the amount of materials added, avoid errors and instability caused by human operation, improve the degree of automation of production and the accuracy of material ratio, thereby ensuring the stability and consistency of product quality.

[0022] In some embodiments, multiple weighing sensors are provided, and the multiple weighing sensors are evenly arranged around the periphery of the material bin.

[0023] In the technical solution, this structural design enhances the overall structural stability of the material silo, ensuring that the material silo remains balanced during the material addition process, avoiding shaking or tilting caused by uneven material weight distribution, and enabling more comprehensive and accurate perception of weight changes in the material silo, thereby improving the accuracy and reliability of weighing.

[0024] In some embodiments, the weighing sensor is connected to the middle of the material bin.

[0025] In this technical solution, the structural design can lower the center of gravity of the material silo, improve the stability of the material silo, and allow the weighing sensor to be closer to the center of gravity of the material silo, thereby improving the accuracy and stability of weighing.

[0026] In some embodiments, a vibrator is provided on the material silo.

[0027] In the technical solution, the structural design uses the vibration of the vibrator to help loosen and flow the material, and can also effectively prevent the material from bridging or blocking in the bin. This ensures that the material can be discharged smoothly and evenly from the outlet and enter the feed pipe, improving the material's flowability and conveying efficiency, and avoiding the impact of untimely or uneven material supply on the normal operation of the mixer and product quality.

[0028] In some embodiments, the support frame is horizontally arranged, and multiple material bins are arranged on the same support frame.

[0029] In the technical solution, the structural design makes the entire material adding structure more compact and allows each material bin to be installed at the same height, making it easy to add various materials to each material bin.

[0030] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0031] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0032] Figure 1 This is a schematic diagram of the powder addition structure of the mixer according to an embodiment of this application.

[0033] In the picture:

[0034] 100. Mixer; 101. Mixing tank; 102. Agitator; 103. Mixing motor; 104. Feed inlet; 105. Discharge port; 106. Discharge gate; 107. Hydraulic rod;

[0035] 200. Material conveying device; 201. Inlet; 202. Outlet; 203. Conveying pipe; 204. Screw conveyor; 205. Conveying motor;

[0036] 300, Material silo; 400, Feed pipe; 500, Support frame; 600, Weighing sensor; 700, Control gate; 800, Vibrator. Detailed Implementation

[0037] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" 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.

[0039] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0040] 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 refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0041] like Figure 1 As shown in an illustrative embodiment of the powder adding structure of the mixer of this utility model, the powder adding structure of the mixer includes a mixer 100. The mixer 100 typically includes a mixing tank 101, a stirrer 102, and a stirring motor 103. The stirrer 102 is located inside the mixing tank 101, and the stirring motor 103 is disposed on the mixing tank 101 and located outside the internal space of the mixing tank 101. Driven by the stirring motor 103, the stirrer 102 rotates inside the mixing tank 101 to stir the material fed into the mixing tank 101.

[0042] The mixing tank 101 typically has a feed inlet 104 and a discharge outlet 105. The discharge outlet 105 is typically equipped with a discharge gate 106, which is opened or closed by rotating under the drive of a hydraulic rod 107. The feed inlet 104 is located at the bottom of the mixing tank 101.

[0043] The powder feeding structure of the mixer also includes a material conveying device 200. The powder is typically in powder form. The material conveying device 200 has an inlet 201 and an outlet 202. The inlet 201 is used to feed the material into the material conveying device 200, and the material conveying device 200 is used to convey the material from the inlet 201 to the outlet 202. The outlet 202 is connected to the feed inlet 104 on the mixing tank 101, and is used to feed the material conveyed by the material conveying device 200 to the outlet 202 into the bottom of the mixing tank 101.

[0044] The powder addition structure of the mixer also includes material bins 300. There are multiple material bins 300, and each material bin 300 typically contains a specific type of material. Multiple material bins 300 are connected to the same inlet 201 via feed pipes 400, allowing various materials to mix to a certain extent when they enter the material conveying device 200 through the inlet 201.

[0045] In this structural design, the materials in each material bin 300 are typically in powder form. The materials in each material bin 300 are conveyed to the mixing drum 101 via the material conveying device 200. The materials enter the mixing drum 101 from the bottom, preventing the materials from falling from top to bottom and generating a large amount of dust. After entering the mixing drum 101, the materials gradually accumulate at the bottom of the mixing drum 101, ensuring that the materials entering the mixing drum 101 are concentrated. The materials do not disperse and generate dust immediately after entering the mixing drum 101, reducing environmental pollution. This also avoids the problem of powder adhering to the top of the mixer 100 and falling onto the agitator 102 to form accumulated material, improving the mixing quality of the materials and achieving a more uniform mixing effect. In addition, since all the materials in each material bin 300 first enter the material conveying device 200 and are then sent into the mixing tank 101, the various materials can be pre-mixed during the conveying process in the material conveying device 200. The materials can be fully mixed in the mixer 100 in a relatively short time, which reduces the mixing pressure of the mixer 100, shortens the running time of the mixer 100, and improves the efficiency of the mixing operation.

[0046] In some embodiments, the feed inlet 104 is located at the bottom of the side wall of the mixing tank 101, and the bottom end of the feed inlet 104 is flush with the bottom surface of the mixing tank 101. This structural design ensures that there is no height difference between the feed inlet 104 and the bottom surface of the internal space of the mixing tank 101, allowing the material to smoothly enter the mixing tank 101 through the feed inlet 104. This ensures that the material does not move vertically within the mixing tank 101 and that subsequent material accumulates on the bottom surface of the mixing tank 101, whereby dust is not generated within the mixing tank 101. In addition, the discharge port 105, discharge gate 106, and hydraulic rod 107 that drives the discharge gate 106 of the mixing tank 101 are usually located on the bottom plate of the mixing tank 101, occupying a lot of space. This structural design places the feed port 104 on the side wall of the mixing tank 101, freeing up space on the bottom plate of the mixing tank 101, so that the discharge port 105, discharge gate 106 and hydraulic rod 107 have enough space to be installed, and the material conveying device 200 can also be kept away from the range of motion of the hydraulic rod 107 and the discharge gate 106, ensuring smooth operation of both.

[0047] In some embodiments, the material conveying device 200 is a screw conveyor. A screw conveyor typically includes a conveying pipe 203, a screw conveyor rod 204, and a conveying motor 205. The screw conveyor rod 204 is axially mounted inside the conveying pipe 203 and has a rod body and blades arranged helically along the axial direction on the rod body. The rod body is connected to the output shaft of the conveying motor 205 via a coupling. Material is fed into the conveying pipe 203 through the inlet 201. The conveying motor 205 drives the screw conveyor rod 204 to rotate, causing the blades to push the material axially along the conveying pipe 203, thereby pushing the material towards the outlet 202.

[0048] The inlet 201 is located at one end of the conveying pipe 203 near the conveying motor 205, and the outlet 202 is located at the other end of the conveying pipe 203, so that the material can move axially from one end to the other end within the conveying pipe 203.

[0049] This structural design utilizes the rotational motion of the screw conveyor 204 to ensure smooth material movement within the conveying pipe 203. The material movement is free from violent agitation, preventing dust from being stirred up and causing clumping during transport. Secondly, when a significant amount of material has already accumulated at the bottom of the mixing tank 101, the resistance to subsequent material entry is relatively high. The screw conveyor 204 exerts a strong pushing force on the material, ensuring it is pushed into the mixing tank 101 continuously. Furthermore, the outer circumference of the screw conveyor blades typically slides in contact with the inner wall of the conveying pipe 203. When the material conveying device 200 stops operating, the blades maintain a degree of closure in the conveying pipe 203, preventing material already in the mixing tank 101 from flowing back into it, thus keeping the material within the mixing tank 101 for continuous mixing.

[0050] In some embodiments, the output port 202 is disposed on the end face of the conveying pipe 203. This structural design ensures that the output port 202 is directly facing the direction of material movement in the conveying pipe 203, thereby ensuring concentrated output of material from the conveying pipe 203, preventing changes in the direction of material movement during output, and avoiding material residue at the corners of the conveying pipe 203 around the output port 202. Furthermore, maintaining a constant direction of material movement during output from the conveying pipe 203 further ensures smooth material delivery into the mixing tank 101, improving the efficiency of material input into the mixing tank 101.

[0051] In some embodiments, the conveying pipe 203 is horizontally arranged. This structural design allows the material to move horizontally within the conveying pipe 203, preventing material accumulation or conveying obstruction due to gravity. Furthermore, the horizontal arrangement aligns the end of the conveying pipe 203 with the side wall of the mixing tank 101, thereby allowing the feed inlet 104 to be positioned on the side wall of the mixing tank 101. This frees up space on the bottom plate of the mixing tank 101, providing sufficient space for the installation of the discharge port 105, discharge gate 106, and hydraulic rod 107. Additionally, the material conveying device 200 can be positioned away from the range of motion of the hydraulic rod 107 and discharge gate 106, ensuring smooth operation of both.

[0052] In some embodiments, the powder adding structure of the mixer further includes a support frame 500. A material hopper 300 is mounted on the support frame 500 via a weighing sensor 600, such that the support frame 500 supports the material hopper 300 via the weighing sensor 600, and the weighing sensor 600 can measure the weight of the material hopper 300. The material hopper 300 typically has an inlet at the top and an outlet at the bottom, for feeding material into the material hopper 300 or discharging material from the material hopper 300 into the feed pipe 400. A control gate 700 is provided on the outlet to open and close the outlet. The control gate 700 is connected to the feed pipe 400, thereby connecting or disconnecting the internal space of the feed pipe 400 from the internal space of the material hopper 300. The powder addition structure of the mixer is usually equipped with a controller. The control gate 700 is usually an electrically controlled valve. The weighing sensor 600 and the control gate are electrically connected to the controller, so that the controller measures the weight of each material bin 300 through each weighing sensor 600 and controls each control gate 700 to open or close according to the measured weight.

[0053] This structural design can monitor the weight of materials in the material bin 300 in real time, and based on the change in weight of the material bin 300 after the control gate 700 is opened, immediately close the control gate 700 after the set weight of material is output, thereby achieving control over the weight of the output material. This enables precise control over the amount of material added, avoiding errors and instability caused by human operation, improving the degree of automation in production and the accuracy of material proportioning, and thus ensuring the stability and consistency of product quality.

[0054] In some embodiments, multiple weighing sensors 600 are provided, and the multiple weighing sensors 600 are evenly arranged around the periphery of the material hopper 300. This structural design allows the support frame 500 to evenly support the material hopper 300 through the multiple weighing sensors 600, enhancing the stability of the material hopper 300 and ensuring that the material hopper 300 remains balanced during the process of adding material to the mixer 100 by discharging material from the material hopper 300, thus preventing the material hopper 300 from shaking or tilting. In addition, the multiple weighing sensors 600 sense the weight of the material hopper 300 from various angles, thereby enabling a more comprehensive and accurate perception of weight changes in the material hopper 300, improving the accuracy and reliability of weighing.

[0055] In some embodiments, the load cell 600 is connected to the middle of the material hopper 300. This structural design lowers the center of gravity of the material hopper 300. Since the material in the material hopper 300 is stacked from bottom to top, the overall center of gravity of the material hopper 300 is located in the lower middle part. The middle of the material hopper 300 is connected to the support frame 500 through the load cell 600, so that the overall center of gravity of the material hopper 300 is located below the support frame 500 or at the same height as the support frame 500, improving the stability of the material hopper 300 on the support frame 500. Furthermore, the center of gravity of the material hopper 300 can be closer to the load cell 600, improving the accuracy and stability of weighing.

[0056] In some embodiments, a vibrator 800 is installed on the material hopper 300. The vibrator 800 is typically electrically connected to a controller and operates under the controller's control. This structural design uses the vibration of the vibrator 800 to loosen and flow the material in the material hopper 300, preventing material from adhering, bridging, or blocking within the hopper. This allows the material to slide smoothly downwards and exit the material hopper 300 through the discharge outlet, improving material flowability and conveying efficiency. This ensures timely delivery of the required material to the mixer 100, preventing untimely or uneven material supply from affecting the normal operation of the mixer 100 and product quality. To ensure smooth material delivery, the lower part of the material hopper 300 is typically conical, with the lower space gradually decreasing from top to bottom, ensuring that the material in the material hopper 300 converges at the discharge outlet at the bottom.

[0057] In some embodiments, the support frame 500 is horizontally arranged, and multiple material bins 300 are all mounted on the same support frame 500, so that the material bins 300 are arranged sequentially in the horizontal direction, and all material bins 300 are at the same height. This structural design makes the material adding structure more compact, eliminating the need for multiple support frames 500 to support each material bin 300 separately, thus reducing equipment costs. In addition, since all material bins 300 are installed at the same height, the inlet ports at the top of each material bin 300 are at approximately the same height, allowing operators to add various materials to the material bins 300 from a single working platform, improving the convenience of material replenishment.

[0058] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0059] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A powder adding structure for a mixer, characterized in that, include: A mixer having a mixing tank; the bottom of the mixing tank has a feed inlet; A material conveying device is provided with an inlet and an outlet; the material conveying device is used to convey material from the inlet to the outlet; the outlet is connected to the inlet and is used to send the material conveyed to the outlet into the bottom of the mixing tank; The material bins are multiple; all of the material bins are connected to the same input port via feed pipes.

2. The powder addition structure of the mixer according to claim 1, characterized in that, The feed inlet is located at the bottom of the side wall of the mixing tank, and the bottom end of the feed inlet is flush with the bottom surface of the mixing tank.

3. The powder addition structure of the mixer according to claim 1, characterized in that, The material conveying device is a screw conveyor; The screw conveyor includes a conveying pipe, a screw conveyor rod axially arranged in the conveying pipe, and a conveying motor arranged at one end of the conveying pipe for driving the screw conveyor rod to rotate; The input port is located at one end of the conveying pipe near the conveying motor, and the output port is located at the other end of the conveying pipe.

4. The powder addition structure of the mixer according to claim 3, characterized in that, The output port is located on the end face of the delivery pipe.

5. The powder addition structure of the mixer according to claim 4, characterized in that, The delivery pipe is set horizontally.

6. The powder addition structure of the mixer according to claim 1, characterized in that, Further includes: A support frame is provided, and the material bin is mounted on the support frame via a weighing sensor; A control gate is provided on the discharge outlet at the bottom of the material silo, and the control gate is connected to the feed pipe; both the weighing sensor and the control gate are electrically connected to the controller.

7. The powder addition structure of the mixer according to claim 6, characterized in that, Multiple weighing sensors are provided, and the multiple weighing sensors are evenly arranged around the periphery of the material bin.

8. The powder addition structure of the mixer according to claim 7, characterized in that, The weighing sensor is connected to the middle of the material bin.

9. The powder addition structure of the mixer according to claim 6, characterized in that, The material silo is equipped with a vibrator.

10. The powder addition structure of the mixer according to claim 6, characterized in that, The support frame is horizontally arranged, and multiple material bins are all arranged on the same support frame.

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