Vacuum stirring device

Abstract

The utility model provides a vacuum stirring device, and relates to the technical field of stirring equipment. The vacuum stirring device comprises a material barrel, a stirring paddle, a sealing cylinder, a power device, a vacuum device, a control device, a main lifting device and an auxiliary lifting device, the material barrel can contain materials, the main lifting device can drive the auxiliary lifting device to ascend and descend, the auxiliary lifting device can drive the sealing cylinder to ascend and descend, the power device can drive the stirring paddle to rotate, and the vacuum device can conduct vacuumizing / vacuum breaking. The control device can realize material stirring by controlling the power device, the vacuum device, the main lifting device and the auxiliary lifting device; the sealing cylinder and the charging basket are in butt joint to define a sealing cavity, and the stirring paddle is inserted into the material; rotating the stirring paddle to stir the materials; vacuumizing the sealing cavity after stirring; the stirring paddle ascends to the surface of the material for trowelling operation; breaking vacuum of the sealing cavity; and the sealing cylinder and the stirring paddle rise to be far away from the material barrel. Therefore, the stirring device can effectively prevent the materials from generating bubbles after stirring.

Description

Technical Field

[0001] This application relates to the field of mixing equipment technology, and in particular to a vacuum mixing device. Background Technology

[0002] Mixing equipment refers to mechanical devices that can mix different materials and ensure they react fully. It is widely used in many fields such as chemical, food, pharmaceutical, construction, and new energy. In related technologies, when mixing materials, the mixing paddle extends into the material and rotates. After mixing, the mixing equipment lifts the paddle from the material. If the material has poor flowability, lifting the paddle will create a cavity in the material where the paddle was, and air will fill this cavity, causing a large number of bubbles to form within the material. When customers use the material to produce products, the resulting products will also contain these bubbles, thus affecting the quality and effectiveness of the products. Utility Model Content

[0003] This application provides a vacuum stirring device, which aims to solve the problem in the related art that when stirring materials with poor flowability using stirring equipment, a large number of bubbles are easily generated in the materials.

[0004] To address the aforementioned drawbacks in related technologies, this application provides a vacuum mixing device, comprising a base, a crossbeam, a material container, a guide tube, a stirring paddle, a sealing cylinder, a power unit, a transmission unit, a vacuum unit, a control unit, a main lifting device, and an auxiliary lifting device. The main lifting device is mounted on the base. One end of the crossbeam is mounted on and driven by the main lifting device, while the other end of the crossbeam has a cavity. Both the power unit and the auxiliary lifting device are located within the cavity. One end of the guide tube is mounted on the crossbeam and extends into the cavity. One end of the sealing cylinder is slidably fitted onto the guide tube. The transmission device is located within the guide tube, with one end extending into the cavity and driving the power unit, and the other end extending into the sealing cylinder and driving the stirring paddle. One end of the auxiliary lifting device extends outside the crossbeam and driving the sealing cylinder. The vacuum unit is connected to the sealing cylinder, and the material container is located below the sealing cylinder. The material container holds the material to be mixed. The main lifting device drives the crossbeam to rise and fall. The auxiliary lifting device drives the sealing cylinder to rise and fall along the guide tube. The power unit drives the stirring paddle to rotate via the transmission unit. The control device is used to: connect the sealing cylinder to the material bucket to form a sealed cavity by controlling the main lifting device and the auxiliary lifting device, and insert the stirring paddle into the material; rotate the stirring paddle by controlling the power device to stir the material; control the vacuum device to evacuate the sealed cavity after the material is stirred; raise the stirring paddle to the surface of the material by controlling the main lifting device to smooth the surface of the material; break the vacuum in the sealed cavity by controlling the vacuum device; and raise the sealing cylinder and stirring paddle away from the material bucket by controlling the main lifting device and the auxiliary lifting device.

[0005] In some implementations, the vacuum stirring device further includes multiple first locking devices, each comprising an upper locking structure and a lower locking structure. The upper locking structure is located on the outer wall of the sealing cylinder, and the lower locking structure is located on the outer wall of the material container. Specifically, the lower locking structure is used to cooperate with the upper locking structure before the vacuum device evacuates the sealing cavity, thereby fixing the material container and the sealing cylinder relative to each other.

[0006] As one or more implementation schemes, the upper locking structure includes a fixing block, one end of which is disposed on the outer wall of the sealing cylinder, and the other end of which has a notch that penetrates the fixing block vertically. The lower locking structure includes a rotating shaft, a connecting rod, a fixing head, and two fixing plates. Both fixing plates are disposed on the outer wall of the material barrel and are spaced apart from each other in the circumferential direction of the material barrel. Both ends of the rotating shaft are respectively disposed on the two fixing plates. One end of the connecting rod is rotatably sleeved on the rotating shaft, and the fixing head is disposed on the other end of the connecting rod. Specifically, the connecting rod is used to rotate around the rotating shaft into the notch before the vacuum device evacuates the sealing cavity, and to make the fixing head abut against the side of the fixing block facing the crossbeam.

[0007] In some implementations, the bottom of the material hopper is equipped with multiple wheels, each of which rotates in conjunction with the hopper. Based on this, the vacuum mixing device also includes two second locking devices, each consisting of a left locking structure and a right locking structure. The two left locking structures are located on the outer wall of the hopper and on opposite sides of the hopper, while the two right locking structures are located on the base. These right locking structures engage with the two left locking structures respectively after the hopper reaches below the sealing cylinder, thus fixing the hopper relative to the base.

[0008] As one or more implementations, the left locking structure includes a locking block, and the right locking structure includes an extension plate, a movable plate, and a screw. One end of the extension plate is mounted on the base, and one end of the movable plate is rotatably mounted on the other end of the extension plate. A through hole is formed in the middle of the movable plate, extending along the thickness direction of the movable plate. A screw hole, communicating with the through hole, is formed at the end of the movable plate away from the extension plate, extending along the length direction of the movable plate. One end of the screw is screwed into the screw hole. Specifically, the movable plate is used to rotate towards the material barrel after the material barrel reaches below the sealing cylinder until the locking block is received in the through hole; the screw is used to screw into the through hole after the locking block is received in the through hole and abut against the side of the locking block away from the base.

[0009] In some implementation schemes, the vacuum device includes a vacuum pump, a vacuum tube, a vacuum valve, and a vacuum breaking valve. One end of the vacuum tube is connected to the vacuum pump, and the other end is connected to the sealing cylinder through the vacuum valve. The vacuum breaking valve is located on any one of the vacuum tube, the sealing cylinder, and the material barrel.

[0010] In some implementation schemes, the vacuum stirring device also includes a first guide rod and a first guide sleeve. A first guide channel with an inwardly recessed opening is provided on the base. One end of the first guide sleeve is inserted into the first guide channel. One end of the first guide rod is set on the crossbeam, and the other end is inserted into the first guide sleeve and slides in cooperation with the first guide sleeve.

[0011] In some implementation schemes, the vacuum stirring device also includes a second guide rod and a second guide sleeve. A second guide channel with an inwardly recessed opening is provided on the crossbeam. One end of the second guide sleeve is inserted into the second guide channel. One end of the second guide rod is set on the sealing cylinder, and the other end is inserted into the second guide sleeve and slides in cooperation with the second guide sleeve.

[0012] In some implementations, the vacuum stirring device also includes a sliding limiting sleeve, which is fitted onto the guide tube and slides in cooperation with the guide tube, and one end of the sealing cylinder is fitted onto the sliding limiting sleeve.

[0013] The vacuum mixing device provided in this application comprises a base, a crossbeam, a material bucket, a guide tube, a stirring paddle, a sealing cylinder, a power unit, a transmission unit, a vacuum unit, a control unit, a main lifting unit, and an auxiliary lifting unit. The main lifting unit is located on the base. One end of the crossbeam is located on the main lifting unit and is driven and connected to it. The other end of the crossbeam has a cavity. The power unit and the auxiliary lifting unit are both located in the cavity. One end of the guide tube is located on the crossbeam and extends into the cavity of the crossbeam. One end of the sealing cylinder is slidably sleeved on the guide tube. The transmission unit is located inside the guide tube. One end of the transmission unit extends into the cavity of the crossbeam and drives and connects to the power unit, and the other end extends into the sealing cylinder and drives and connects to the stirring paddle. One end of the auxiliary lifting unit extends out of the crossbeam and drives and connects to the sealing cylinder. The vacuum unit is connected to the sealing cylinder, and the material bucket is located below the sealing cylinder. In practical applications, the material hopper can hold materials, the main lifting device can drive the crossbeam to rise and fall, the auxiliary lifting device can drive the sealing cylinder to rise and fall along the guide tube, and the power device can drive the stirring paddle to rotate through the transmission device. The operation of the main lifting device, auxiliary lifting device, power device, and vacuum device is all controlled by the control device. The control process of the control device is as follows: by controlling the main lifting device and auxiliary lifting device, the sealing cylinder is connected to the material hopper to form a sealed cavity, and the stirring paddle is inserted into the material; by controlling the power device, the stirring paddle is rotated to stir the material; after the material is stirred, the vacuum device is controlled to evacuate the sealed cavity; by controlling the main lifting device, the stirring paddle is raised to the surface of the material to smooth the surface; by controlling the vacuum device, the vacuum in the sealed cavity is broken; by controlling the main lifting device and auxiliary lifting device, the sealing cylinder and stirring paddle are raised away from the material hopper. Therefore, compared to traditional methods for mixing low-flow materials, this application first controls the mixing paddle to rise to the surface of the material after mixing to perform a smoothing operation, thereby sealing the cavity formed in the material where the original mixing paddle was located due to the removal of the mixing paddle. At the same time, since this process is carried out in a vacuum environment, no air will enter the cavity and no bubbles will be generated in the material. Therefore, when customers use the material to produce products, there will be no bubbles in the produced products, thus ensuring the quality and effect of the products. Attached Figure Description

[0014] To more clearly illustrate the related technologies or the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the related technologies or the embodiments of this application will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application, and not all embodiments. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a cross-sectional view of the vacuum stirring device provided in the embodiment of this application after the impeller is lifted.

[0016] Figure 2 This is a cross-sectional view of the vacuum stirring device provided in the embodiments of this application during stirring.

[0017] Figure 3 A cross-sectional view of the vacuum stirring device provided in the embodiment of this application, showing the paddle being lifted to the surface of the material;

[0018] Figure 4 This is a schematic diagram of the structure of the first locking device provided in an embodiment of this application;

[0019] Figure 5 These are cross-sectional views of the material feeding bucket and base locked together from different perspectives, provided in the embodiments of this application.

[0020] Figure 6 This is a schematic diagram of the structure of the second locking device provided in an embodiment of this application.

[0021] The markings in the above figures represent:

[0022] 1-Base, 2-Crossbeam, 3-Material bucket, 4-Conduit, 5-Agitator, 6-Sealing cylinder, 7-Transmission device, 8-Main lifting device, 9-Auxiliary lifting device, 10-First locking device, 11-Wheel, 12-Second locking device, 13-First guide rod, 14-Second guide rod, 15-Second guide sleeve, 16-Sealing cavity, 61-Upper sealing cylinder, 62-Lower sealing cylinder, 63-Ventilation port, 71-Transmission shaft, 72-Transmission... Moving component, 101-Upper locking structure, 102-Lower locking structure, 121-Left locking structure, 122-Right locking structure, 1011-Fixing block, 1012-Notch, 1021-Rotating shaft, 1022-Connecting rod, 1023-Fixing head, 1024-Fixing plate, 1211-Locking block, 1221-Extension plate, 1222-Moving plate, 1223-Through hole, 1224-Screw, 1225-Handle. Detailed Implementation

[0023] In related technologies, when materials are stirred using a mixing device, the mixing paddle extends into the material and rotates. After stirring, the mixing device lifts the paddle from the material. If the material has poor flowability, lifting the paddle will create a cavity in the material where the paddle was previously located. Air will fill this cavity, causing a large number of bubbles to form within the material. When customers subsequently use the material to produce products, the resulting products will also contain bubbles, thus reducing product quality, affecting product performance, and hindering product sales. In view of this, this application proposes a vacuum mixing device in the embodiments below to solve the above-mentioned drawbacks of the related technologies.

[0024] To make the objectives, technical solutions, and advantages of this application more apparent and understandable, this application will be clearly and completely described below in conjunction with its embodiments and corresponding drawings. Throughout, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions. It should be understood that the embodiments of this application described below are only for explaining this application and are not intended to limit this application. That is, all other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. Furthermore, the technical features involved in the various embodiments of this application described below can be combined with each other as long as they do not conflict with each other.

[0025] Please see Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a cross-sectional view of the vacuum mixing device after the impeller has been lifted. Figure 2 This is a cross-sectional view of a vacuum mixer during stirring. Figure 3 This is a cross-sectional view of the vacuum mixing device lifting the impeller to the surface of the material. This embodiment provides a vacuum mixing device, including a base 1, a crossbeam 2, a material bucket 3, a guide tube 4, a mixing impeller 5, a sealing cylinder 6, a power unit (not shown), a transmission unit 7, a vacuum unit (not shown), a control unit (not shown), a main lifting device 8, and an auxiliary lifting device 9. The main lifting device 8 is mounted on the base 1. The crossbeam 2 extends horizontally, with one end mounted on and driven by the main lifting device 8. The other end of the crossbeam 2 has a cavity (not shown). The power unit and the auxiliary lifting device 9 are both located within the cavity. The guide tube 4 extends vertically, with one end corresponding to the cavity and mounted on the crossbeam 2, extending to... Inside the cavity, one end of the sealing cylinder 6 has a cylinder opening that communicates with the interior. The other end of the sealing cylinder 6 (i.e., the end opposite to the cylinder opening) is sleeved on the outer wall of the guide tube 4 and slides in cooperation with the guide tube 4. The sealing cylinder 6 is connected to the cavity of the crossbeam 2 through the guide tube 4. The transmission device 7 is located inside the guide tube 4. One end of the transmission device 7 extends into the cavity of the crossbeam 2 and drives the power device, while the other end extends into the sealing cylinder 6 and drives the stirring paddle 5. One end of the auxiliary lifting device 9 extends from the cavity to the outside of the crossbeam 2 and drives the sealing cylinder 6. The vacuum device is connected to the sealing cylinder 6. The material bucket 3 is located below the sealing cylinder 6 and its bucket opening is opposite to the cylinder opening of the sealing cylinder 6. It should be noted that the control device in this embodiment mainly undertakes the functions of control, data processing and analysis. The power device, vacuum device, main lifting device 8 and auxiliary lifting device 9 are respectively connected to the control device. The control device is used to control the operation of the power device, vacuum device, main lifting device 8 and auxiliary lifting device 9. As for the installation position of the control device, it can be selected according to actual needs. This embodiment does not limit it to a single location. For example, the control device can be placed on the base 1, the crossbeam 2 or the ground adjacent to the base 1.

[0026] In this embodiment, the driving forms of the power unit, vacuum unit, main lifting device 8 and auxiliary lifting device 9 can all adopt any driving form commonly used in the art, such as electric drive with an electric motor as the driving source, pneumatic drive with a cylinder as the driving source and hydraulic drive with an oil cylinder as the driving source, etc. The specific choice can be made according to actual needs, and this embodiment does not limit it to a single one. Furthermore, for devices such as power units, vacuum units, main lifting units 8, and auxiliary lifting units 9, when these devices are electrically driven, the control device in this embodiment may include a controller (not shown). The motors in these devices are all connected to the controller, and the controller can control the operation of these devices by controlling the motors. When these devices are pneumatically driven, the control device in this embodiment includes a pneumatic station (not shown) in addition to the controller. The cylinders in these devices are all connected to the pneumatic station, and the controller can control the operation of these devices by controlling the pneumatic station. When these devices are hydraulically driven, the control device in this embodiment includes a hydraulic station (not shown) in addition to the controller. The cylinders in these devices are all connected to the hydraulic station, and the controller can control the operation of these devices by controlling the hydraulic station. In addition, it should be noted that the controller can be any device commonly used in the art with control and data processing and analysis functions, such as a minicomputer, a microcontroller, an industrial control computer (IPC), a programmable logic controller (PLC), and a distributed control system (DCS). The specific choice can be based on actual needs, and this embodiment does not impose a unique limitation.

[0027] In this embodiment, the vacuum stirring device can be selectively equipped with a multi-sensor system consisting of several sensors. These sensors are distributed at different locations within the vacuum stirring device to monitor various parameters and states during its operation in real time, such as: temperature data of the material in the material tank 3; liquid level data of the material in the material tank 3; rotational speed data of the stirring paddle 5; vibration data of the sealing cylinder 6, material tank 3, crossbeam 2, etc.; height data of the crossbeam 2, sealing cylinder 6, etc. during lifting; and environmental pressure data during material stirring. It is understood that the multi-sensor system provides data support for the precise control and safe operation of the vacuum stirring device. That is, the controller can control the operation of the vacuum stirring device based on the various data monitored by the multi-sensor system, thereby achieving automatic control of the entire material stirring process. Furthermore, it should be noted that different types of sensors monitor different data. The types of sensors included in the multi-sensor system and the installation positions of each sensor can be designed according to actual needs; this embodiment does not impose a unique limitation on this.

[0028] In this embodiment, the sealing cylinder 6 can be a single sealing cylinder 6 or multiple sealing cylinders 6 connected end to end, depending on actual needs. This embodiment does not limit this. For example, the sealing cylinder 6 is composed of two connected end to end, namely, the sealing cylinder 6 includes an upper sealing cylinder 61 and a lower sealing cylinder 62. One end of the upper sealing cylinder 61 is sleeved on the outer wall of the conduit 4 and slides in cooperation with the conduit 4. The other end of the upper sealing cylinder 61 is connected to one end of the lower sealing cylinder 62 by fasteners such as bolts. In addition, it should be noted that sealing structures such as sealing rings should be provided at the joints between the upper sealing cylinder 61 and the lower sealing cylinder 62, and at the joints between the upper sealing cylinder 61 and the outer wall of the conduit 4, in order to ensure the sealing performance of the sealing cylinder 6. Since the use of sealing rings and other sealing structures to achieve sealing is a relatively mature technology in the field, this embodiment will not elaborate on this.

[0029] In this embodiment, the material bucket 3 is used to contain the material to be stirred. The main lifting device 8 is used to drive the crossbeam 2 to rise and fall, that is, to drive the crossbeam 2 to move in the vertical direction. The auxiliary lifting device 9 is used to drive the sealing cylinder 6 to rise and fall along the guide tube 4, that is, to drive the sealing cylinder 6 to move in the axial direction (also the vertical direction) of the guide tube 4. The power device is used to drive the stirring paddle 5 to rotate through the transmission device 7. The control device is used to: control the main lifting device 8 and the auxiliary lifting device 9 to make the sealing cylinder 6 and the material bucket 3 come into contact to form a sealing cavity 16, and to make the stirring paddle 5 insert into the material bucket 3; control the power device to make the stirring paddle 5 rotate in the material to stir the material; control the vacuum device to evacuate the sealing cavity 16 after the material is stirred; control the main lifting device 8 to make the stirring paddle 5 rise to the surface of the material to smooth the surface of the material; control the vacuum device to break the vacuum in the sealing cavity 16; and control the main lifting device 8 and the auxiliary lifting device 9 to make the sealing cylinder 6 and the stirring paddle 5 rise away from the material bucket 3.

[0030] In other words, the stirring process of the material inside the material tank 3 is as follows: when both the sealing cylinder 6 and the stirring paddle 5 are located above the material tank 3 (e.g., Figure 1 When the main lifting device 8 drives the crossbeam 2 to descend, as shown, the guide tube 4, power device, transmission device 7, stirring paddle 5, auxiliary lifting device 9, etc. descend synchronously. The control device also controls the auxiliary lifting device 9 to drive the sealing cylinder 6 to rise / fall along the guide tube 4 (if the position of the sealing cylinder 6 on the guide tube 4 is appropriate, the sealing cylinder 6 can be kept stationary). Finally, the stirring paddle 5 is inserted into the material in the material bucket 3, and the sealing cylinder 6 is connected to the material bucket 3. After connection, the opening of the sealing cylinder 6 is connected to the opening of the material bucket 3, and the two enclose to form a sealed cavity 16. At this time, the state of the vacuum stirring device is as shown. Figure 2As shown; the control device controls the power unit to start and provide power. The power provided by the power unit is transmitted to the stirring paddle 5 through the transmission device 7, causing the stirring paddle 5 to rotate in the material and start stirring the material. After the material is stirred, the control device controls the vacuum device to evacuate the sealed cavity 16, raising the vacuum level in the sealed cavity 16 to a preset vacuum threshold, thus lowering the pressure in the sealed cavity 16 to a preset pressure threshold, thereby preventing air from entering the sealed cavity 16. After the vacuum is evacuated, the control device first controls the power unit to reduce the speed of the stirring paddle 5, and then controls the main lifting device 8 to drive the crossbeam 2 to rise. When the crossbeam 2 rises, the guide tube 4, power unit, transmission device 7, stirring paddle 5, auxiliary lifting device 9, etc., rise synchronously. At the same time, it is also necessary to keep the sealing cylinder 6 and the material bucket 3 enclosing and forming the sealed cavity 16. Finally, the stirring paddle 5 rises from the inside of the material to the surface of the material, and the rotating stirring paddle 5 smooths the surface of the material. At this time, the state of the vacuum stirring device is as follows. Figure 3 As shown; after the surface of the material is smoothed, the control device controls the vacuum device to break the vacuum in the sealed cavity 16, allowing outside air to quickly enter the sealed cavity 16, and eventually the pressure inside the sealed cavity 16 will reach equilibrium with the outside atmospheric pressure; after the vacuum is broken, the control device controls the main lifting device 8 to drive the crossbeam 2 to rise. When the crossbeam 2 rises, the guide tube 4, power device, transmission device 7, stirring paddle 5, auxiliary lifting device 9, etc. rise synchronously. The control device also controls the auxiliary lifting device 9 to drive the sealed cylinder 6 to rise along the guide tube 4, so that the sealed cylinder 6 and the stirring paddle 5 rise above the material bucket 3 (e.g., Figure 1 As shown in the figure, the sealing cylinder 6 and the stirring paddle 5 are moved to a position away from the material tank 3 to facilitate subsequent cleaning of the inner walls of the stirring paddle 5 and the sealing cylinder 6.

[0031] As can be seen from the above, compared with the traditional method for stirring low-flow materials, this embodiment first controls the stirring paddle 5 to rise to the surface of the material after the material is stirred to perform a smoothing operation, so as to seal the cavity formed in the material where the stirring paddle 5 was originally located due to the removal of the stirring paddle 5. At the same time, since this process is carried out in a vacuum environment, no air will enter the cavity and no bubbles will be generated in the material. Therefore, when customers use the material to produce products, there will be no bubbles in the produced products, thereby improving product quality, ensuring product effect, and making it more conducive to product sales.

[0032] In some embodiments, please refer to Figures 1 to 3The transmission device 7 includes a transmission shaft 71 and a transmission assembly 72. The transmission shaft 71 is located inside the conduit 4 and rotates with it. One end of the transmission shaft 71 extends into the cavity of the crossbeam 2 and drives the power device; the other end extends into the sealing cylinder 6 and drives one end of the transmission assembly 72. The other end of the transmission assembly 72 drives the agitator 5. In practical applications, when it is necessary to drive the agitator 5 to rotate, the power device can drive the transmission shaft 71 to rotate around its own axis (i.e., the central axis of the conduit 4). The transmission shaft 71 can then drive the agitator 5 to rotate via the transmission assembly 72. It can be understood that the transmission shaft 71 serves to transmit power and provide support. The transmission shaft 71 can transmit the rotational power provided by the power device to the transmission assembly 72, and the transmission assembly 72 can change the transmission speed and torque to adapt to the rotational requirements of the agitator 5. It should be noted that bearings (not shown in the figure) are fitted at both opposite ends of the transmission shaft 71. The two bearings are located at the two opposite openings of the conduit 4, and each bearing is interference-fitted with the wall of the conduit 4. Thus, the rotational engagement between the transmission shaft 71 and the conduit 4 can be achieved through the two bearings. It should also be noted that the transmission method of the transmission component 72 can be any transmission method commonly used in the art, such as belt drive, chain drive, gear drive, worm gear drive, etc. The specific method can be selected according to actual needs, and this application does not limit it to a single method.

[0033] In some embodiments, please refer to Figures 1 to 3 In addition to the structure described above, the vacuum stirring device also includes multiple first locking devices 10. Each first locking device 10 includes an upper locking structure 101 and a lower locking structure 102. The upper locking structures 101 are all located on the outer wall of the sealing cylinder 6 and are adjacent to the cylinder opening, distributed at intervals around the central axis of the sealing cylinder 6. The lower locking structures 102 are all located on the outer wall of the material container 3 and are adjacent to the container opening, distributed at intervals around the central axis of the material container 3. When the material container 3 is located below the sealing cylinder 6, the upper locking structures 101 and lower locking structures 102 correspond one-to-one. Specifically, before evacuating the sealing cavity 16 using the vacuum device, each lower locking structure 102 can cooperate with the corresponding upper locking structure 101 to lock the material container 3 and the sealing cylinder 6, thus fixing the material container 3 and the sealing cylinder 6 relatively. In other words, in practical applications, after the material is stirred, multiple first locking devices 10 are used to lock the material barrel 3 and the sealing cylinder 6. Then, the sealing cavity 16 is evacuated by a vacuum device. This can effectively prevent the sealing cylinder 6 from separating from the material barrel 3 during the subsequent lifting process (i.e., the stirring paddle 5 rises from the inside of the material to the surface of the material), thereby preventing the sealing cavity 16 from leaking vacuum during the subsequent lifting process.

[0034] As one example, please refer to Figure 4 , Figure 4The diagram shows the structure of the first locking device. The upper locking structure 101 includes a fixing block 1011, one end of which is located on the outer wall of the sealing cylinder 6 and near the cylinder opening, and the other end has a notch 1012 that penetrates the fixing block 1011 vertically. The lower locking structure 102 includes a rotating shaft 1021, a connecting rod 1022, a fixing head 1023, and two fixing plates 1024. Both fixing plates 1024 are located on the outer wall of the material bucket 3 and near the bucket opening. Plates 1024 are spaced apart around the circumference of the material barrel 3. A rotating shaft 1021 is located between two fixed plates 1024, with both ends respectively mounted on the two fixed plates 1024. One end of a connecting rod 1022 is sleeved on the rotating shaft 1021 and rotates in cooperation with it. A fixed head 1023 is located on the other end of the connecting rod 1022. The diameter of the connecting rod 1022 is matched to the size of the notch 1012 on the fixed block 1011, and the size of the fixed head 1023 is larger than the size of the notch 1012 on the fixed block 1011. Specifically, when locking the sealing cylinder 6 and the material barrel 3, the connecting rod 1022 rotates around the rotating shaft 1021 into the notch 1012, and the fixed head 1023 abuts against the side of the fixed block 1011 facing the crossbeam 2. In other words, when locking the sealing cylinder 6 and the material barrel 3, the connecting rod 1022 is rotated toward the fixing block 1011 until the connecting rod 1022 is engaged in the notch 1012 on the fixing block 1011. When the connecting rod 1022 is engaged in the notch 1012 on the fixing block 1011, the fixing head 1023 will be above the fixing block 1011 and abut against the side of the fixing block 1011 facing the crossbeam 2. At the same time, since the size of the fixing head 1023 is larger than the size of the notch 1012 on the fixing block 1011, even if the sealing cylinder 6 has a tendency to rise (i.e., a tendency to separate from the material barrel 3), the rise of the sealing cylinder 6 will be blocked by the fixing head 1023. In this way, the separation of the sealing cylinder 6 and the material barrel 3 can be avoided, thereby achieving the locking of the sealing cylinder 6 and the material barrel 3, so that the sealing cylinder 6 and the material barrel 3 are relatively fixed. Preferably, the lower locking structure 102 may include an eye nut and a hinge bolt screwed to the eye nut, with the eye of the eye nut serving as a retaining head 1023 and the remaining portion of the hinge bolt and eye nut serving as a connecting rod 1022.

[0035] In some embodiments, please refer to Figure 1 , Figure 2 and Figure 3The bottom of the material hopper 3 is equipped with multiple wheels 11, each of which rotates in conjunction with the material hopper 3. This means that the material hopper 3 is not fixed below the sealed cylinder 6, and workers can move the material hopper 3 by rolling the wheels 11, thus facilitating the transportation of materials. Furthermore, it should be noted that the number of wheels 11 can be designed according to actual needs, and this application does not impose a unique limitation on this; for example, the bottom of the material hopper 3 is equipped with four wheels 11, which are located at the four corners of the bottom of the material hopper 3.

[0036] Based on this, please combine Figure 5 , Figure 5 The diagram shows cross-sectional views of the material barrel and base locked together from different perspectives. In addition to the structure described above, the vacuum stirring device also includes two second locking devices 12. Each second locking device 12 includes a left locking structure 121 and a right locking structure 122. The two left locking structures 121 are located on the outer wall of the material barrel 3 and on opposite sides of the material barrel 3. The two right locking structures 122 are located on the base 1. When the material barrel 3 is moved into position (i.e., moved below the sealing cylinder 6), the two right locking structures 122 correspond one-to-one with the two left locking structures 121. Specifically, after the material barrel 3 is moved into position, each right locking structure 122 can cooperate with the corresponding left locking structure 121 to lock the material barrel 3 and the base 1, thus fixing the material barrel 3 and the base 1 relatively. In other words, in practical applications, since the material bucket 3 is movable, when the material bucket 3 is moved below the sealing cylinder 6, in order to prevent the material bucket 3 from being misaligned with the sealing cylinder 6, two second locking devices 12 are needed to lock the material bucket 3 and the base 1 so as to fix the material bucket 3 below the sealing cylinder 6.

[0037] As one example, please refer to Figure 6 , Figure 6A schematic diagram of the second locking device is shown; the left locking structure 121 includes a locking block 1211, and the right locking structure 122 includes an extension plate 1221, a movable plate 1222, and a screw 1224. One end of the extension plate 1221 is mounted on the base 1, and one end of the movable plate 1222 is rotatably mounted on the other end of the extension plate 1221. The middle part of the movable plate 1222 has a through hole 1223, which extends along the thickness direction of the movable plate 1222. The end of the movable plate 1222 away from the extension plate 1221 has a screw hole (not shown) that communicates with the through hole 1223. The screw hole extends along the length direction of the movable plate 1222, and one end of the screw 1224 is screwed into the screw hole. Specifically, during the process of locking the material barrel 3 and the base 1, the movable plate 1222 is used to rotate toward the material barrel 3 until the locking block 1211 is received in the through hole 1223 on the movable plate 1222; after the locking block 1211 is received in the through hole 1223 on the movable plate 1222, the screw 1224 is used to screw into the through hole 1223 and abut against the side of the locking block 1211 away from the base 1. In other words, when locking the material bucket 3 and the base 1, the movable plate 1222 is rotated toward the locking block 1211 until the locking block 1211 is framed in the through hole 1223 on the movable plate 1222. Then, the screw 1224 is rotated to move the locking block 1211 along the hole axis of the screw hole into the through hole 1223 until it abuts against the side of the locking block 1211 away from the base 1. In this way, the locking block 1211 is restricted within the through hole 1223 on the movable plate 1222, and the movable plate 1222 cannot be separated from the locking block 1211, thus achieving the locking of the material bucket 3 and the base 1. Preferably, the end of the screw 1224 located outside the screw hole is provided with a handle 1225. The user can hold the handle 1225 to rotate the screw 1224, thereby screwing the screw 1224 into the through hole 1223. That is to say, the handle 1225 facilitates the user's rotation of the screw 1224.

[0038] In some embodiments, please refer to Figures 1-3The vacuum device includes a vacuum pump (not shown), a vacuum tube (not shown), a vacuum valve (not shown), and a vacuum breaking valve (not shown). One end of the vacuum tube is connected to the vacuum pump, and the other end is connected to the sealing cylinder 6 through the vacuum valve. The vacuum breaking valve is used to connect the sealing cavity 16 with the outside space. The installation position of the vacuum breaking valve can be selected according to actual needs, and this application does not limit it to a single location. For example, the vacuum breaking valve can be installed on the vacuum tube, the sealing cylinder 6, or the material bucket 3. In addition, the installation position of the vacuum pump can also be selected according to actual needs, and this application does not limit it to a single location. For example, the vacuum pump can be installed on the crossbeam 2, the base 1, or the ground adjacent to the base 1. In practical applications, when evacuating the sealed cavity 16, the control device first controls the vacuum valve to open and the vacuum breaking valve to close, and then controls the vacuum pump to start. The vacuum pump will extract the air from the sealed cavity 16 through the vacuum tube. After the vacuum level in the sealed cavity 16 rises to the preset vacuum level threshold, the control device will control the vacuum valve to close and control the vacuum pump to stop. When breaking the vacuum in the sealed cavity 16, the control device controls the vacuum breaking valve to open, and the outside air will quickly enter the sealed cavity 16 through the vacuum breaking valve, eventually making the pressure inside the sealed cavity 16 equal to the outside atmospheric pressure. Preferably, a vent 63 connected to the interior is opened on the sealed cylinder 6, and the vacuum valve is located at the vent 63 and connected to one end of the vacuum tube.

[0039] Furthermore, it should be noted that a vacuum gauge (not shown in the figure) is installed inside the sealed cavity 16. For example, a vacuum gauge can be installed on the inner wall of the sealed cylinder 6. The vacuum gauge can detect the vacuum level inside the sealed cavity 16 in real time and transmit it to the controller. The controller can determine whether the vacuum level inside the sealed cavity 16 has reached the preset vacuum level threshold during the vacuuming process, and control the vacuum valve to close and the vacuum pump to stop when the preset vacuum level threshold is reached. The vacuum gauge can be any device with vacuum level detection function commonly used in the field, such as a thermocouple vacuum gauge, an ionization vacuum gauge, or a resistance vacuum gauge. The specific choice can be made according to actual needs, and this application does not limit it to a single one. It should also be noted that since the opening and closing of both the vacuum valve and the vacuum breaking valve are controlled by the controller, both the vacuum valve and the vacuum breaking valve need to be used with an actuator (not shown in the figure). The actuator is connected to the controller, and the controller can control the actuator to drive the valve core of the vacuum valve / vacuum breaking valve to move, thereby realizing the opening and closing of the vacuum valve / vacuum breaking valve. Among them, the actuator can be any actuator commonly used in the field, such as electric actuator, pneumatic actuator, hydraulic actuator, etc., and can be selected according to actual needs. This application does not make a unique limitation in this regard.

[0040] In some embodiments, please refer to Figures 1 to 3In addition to the structure described above, the vacuum stirring device also includes a first guide rod 13 and a first guide sleeve (not shown in the figure). A recessed first guide channel (not shown in the figure) is provided on the base 1. One end of the first guide sleeve is inserted into the first guide channel and located at the channel opening. The first guide rod 13 extends vertically, with one end mounted on the crossbeam 2 and the other end inserted into and slidingly engaged with the first guide sleeve. It can be understood that the first guide rod 13, the first guide sleeve, and the first guide channel together form a guiding structure. When the main lifting device 8 drives the crossbeam 2 to rise and fall, the first guide rod 13 will slide back and forth vertically within the first guide channel to guide the rise and fall of the crossbeam 2, thereby ensuring the stability of the crossbeam 2 when driven by the main lifting device 8.

[0041] Furthermore, the vacuum stirring device also includes a second guide rod 14 and a second guide sleeve 15. A recessed second guide channel (not shown) is provided on the crossbeam 2. One end of the second guide sleeve 15 is inserted into the second guide channel and located at the channel opening. The second guide rod 14 extends vertically, with one end attached to the sealing cylinder 6 and the other end inserted into the second guide sleeve 15 and slidingly engaging with it. It can be understood that the second guide rod 14, the second guide sleeve 15, and the second guide channel together form another guiding structure. When the auxiliary lifting device 9 drives the sealing cylinder 6 to rise and fall along the guide tube 4, the second guide rod 14 will slide back and forth vertically within the second guide channel to guide the rising and falling of the sealing cylinder 6 along the guide tube 4, thereby ensuring the stability of the sealing cylinder 6 when driven by the auxiliary lifting device 9 to rise and fall along the guide tube 4.

[0042] In some embodiments, please refer to Figures 1 to 3 In addition to the structure described above, the vacuum stirring device also includes a sliding limiting sleeve (not shown in the figure). The sliding limiting sleeve is fitted onto the outer wall of the guide tube 4 and slides in cooperation with the guide tube 4. The end of the sealing cylinder 6 opposite to the cylinder opening is fitted onto the sliding limiting sleeve. It can be understood that the sliding of the sealing cylinder 6 along the guide tube 4 is actually the sliding of the sliding limiting sleeve along the guide tube 4, and the sliding limiting sleeve mainly serves to limit the movement of the guide tube 4 in the circumferential direction. Furthermore, it should be noted that a sealing ring or other sealing structure should be provided at the junction of the sliding limiting sleeve and the outer wall of the guide tube 4 to ensure the sealing performance of the sealing cylinder 6. Since the use of sealing rings or other sealing structures to achieve sealing is a relatively mature technology in this field, this application will not elaborate further on this aspect.

[0043] The above embodiments are merely preferred implementations of this application and are not the only limitation on the content related to the vacuum stirring device; those skilled in the art can make flexible settings based on the above embodiments and according to the actual application scenario. It is understood that, through the implementation of the above embodiments of this application, a vacuum stirring device is constituted by the base 1, crossbeam 2, material bucket 3, guide tube 4, stirring paddle 5, sealing cylinder 6, power device, transmission device 7, vacuum device, control device, main lifting device 8, and auxiliary lifting device 9. The main lifting device 8 is located on the base 1. One end of the crossbeam 2 is located on the main lifting device 8 and is driven and connected to the main lifting device 8. The other end of the crossbeam 2 has a cavity. The power device and the auxiliary lifting device 9 are both located in the cavity. One end of the guide tube 4 is located on the crossbeam 2 and extends into the cavity of the crossbeam 2. One end of the sealing cylinder 6 is slidably sleeved on the guide tube 4. The transmission device 7 is located inside the guide tube 4. One end of the transmission device 7 extends into the cavity of the crossbeam 2 and drives and connects to the power device. The other end extends into the sealing cylinder 6 and drives and connects to the stirring paddle 5. One end of the auxiliary lifting device 9 extends out of the crossbeam 2 and drives and connects to the sealing cylinder 6. The vacuum device is connected to the sealing cylinder 6. The material bucket 3 is located below the sealing cylinder 6. In practical applications, the material hopper 3 can hold materials, the main lifting device 8 can drive the crossbeam 2 to rise and fall, the auxiliary lifting device 9 can drive the sealing cylinder 6 to rise and fall along the guide tube 4, and the power device can drive the stirring paddle 5 to rotate through the transmission device 7. The operation of the main lifting device 8, the auxiliary lifting device 9, the power device, and the vacuum device are all controlled by the control device. The corresponding control process is as follows: by controlling the main lifting device 8 and the auxiliary lifting device 9, the sealing cylinder 6 is connected to the material hopper 3 to form a sealed cavity 16, and the stirring paddle 5 is inserted into the material; by controlling the power device, the stirring paddle 5 is rotated to stir the material; after the material is stirred, the vacuum device is controlled to evacuate the sealed cavity 16; by controlling the main lifting device 8, the stirring paddle 5 is raised to the surface of the material to smooth the surface of the material; by controlling the vacuum device, the vacuum in the sealed cavity 16 is broken; by controlling the main lifting device 8 and the auxiliary lifting device 9, the sealing cylinder 6 and the stirring paddle 5 are raised away from the material hopper 3. Therefore, compared with traditional methods for mixing low-flow materials, this application first controls the stirring paddle 5 to rise to the surface of the material after mixing to perform a smoothing operation, thereby sealing the cavity formed in the material where the stirring paddle 5 was originally located due to its removal. At the same time, since this process is carried out in a vacuum environment, no air will enter the cavity and no bubbles will be generated in the material. Therefore, when customers use the material to produce products, the products produced will also be free of bubbles, thereby improving product quality, ensuring product effectiveness, and making it more conducive to product sales.

[0044] It should be noted that the several embodiments shown above in this application are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. Similar or identical parts between embodiments can be referred to interchangeably. It should also be noted that in the textual description of this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply such an actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements may include not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus; and, without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0045] Furthermore, those skilled in the art can implement or use this application by practicing the several embodiments shown above. Various modifications to the embodiments shown above will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments not shown without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the several embodiments shown above, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A vacuum stirring apparatus, characterized by, The device comprises a base, a beam, a material bucket, a guide pipe, a stirring paddle, a sealing cylinder, a power device, a transmission device, a vacuum device, a control device, a main lifting device and an auxiliary lifting device. The main lifting device is arranged on the base. One end of the beam is arranged on the main lifting device and is drivingly connected with the main lifting device. The other end of the beam has a cavity. The power device and the auxiliary lifting device are arranged in the cavity. One end of the guide pipe is arranged on the beam and extends into the cavity. One end of the sealing cylinder is slidingly sleeved on the guide pipe. The transmission device is arranged in the guide pipe. One end of the transmission device extends into the cavity and is drivingly connected with the power device. The other end of the transmission device extends into the sealing cylinder and is drivingly connected with the stirring paddle. One end of the auxiliary lifting device extends out of the beam and is drivingly connected with the sealing cylinder. The vacuum device is connected with the sealing cylinder. The material bucket is located below the sealing cylinder. The material bucket is used for containing materials to be stirred. The main lifting device is used for driving the beam to lift. The auxiliary lifting device is used for driving the sealing cylinder to lift along the guide pipe. The power device is used for driving the stirring paddle to rotate through the transmission device. The control device is used for: making the sealing cylinder and the material bucket butt joint to form a sealed cavity and making the stirring paddle insert into the materials by controlling the main lifting device and the auxiliary lifting device; making the stirring paddle rotate to stir the materials by controlling the power device; making the stirring paddle rise to the surface of the materials to smooth the surface of the materials by controlling the main lifting device after the materials are stirred; making the vacuum device break the vacuum of the sealed cavity; and making the sealing cylinder and the stirring paddle rise to be away from the material bucket by controlling the main lifting device and the auxiliary lifting device.

2. The vacuum mixing apparatus of claim 1, wherein A plurality of first locking devices are further included. The first locking device comprises an upper locking structure and a lower locking structure. The upper locking structure is arranged on the outer wall of the sealing cylinder. The lower locking structure is arranged on the outer wall of the material bucket. The lower locking structure is used for cooperating with the upper locking structure before the vacuum device performs vacuumization on the sealed cavity, so as to relatively fix the material bucket and the sealing cylinder.

3. The vacuum mixing apparatus of claim 2, wherein, The upper locking structure comprises a fixed block. One end of the fixed block is arranged on the outer wall of the sealing cylinder. The other end of the fixed block is provided with an opening. The opening penetrates the fixed block in the vertical direction. The lower locking structure comprises a rotating shaft, a connecting rod, a fixed head and two fixed plates. The two fixed plates are arranged on the outer wall of the material bucket. The two fixed plates are spaced apart in the circumferential direction of the material bucket. The two ends of the rotating shaft are arranged on the two fixed plates respectively. One end of the connecting rod is rotatably sleeved on the rotating shaft. The fixed head is arranged on the other end of the connecting rod. The connecting rod is used for rotating into the opening around the rotating shaft before the vacuum device performs vacuumization on the sealed cavity, and making the fixed head abut against the side of the fixed block which faces the beam.

4. The vacuum mixing apparatus of claim 1, wherein The bottom of the hopper is provided with a plurality of wheels, each wheel is in rotation cooperation with the hopper.

5. The vacuum mixing apparatus of claim 4, wherein, Two second locking devices are further included, the second locking device includes left locking structure and right locking structure, two left locking structures are arranged on the outer wall of the hopper and are respectively located at opposite sides of the hopper, two right locking structures are arranged on the base, and the right locking structures are used for cooperating with the left locking structures respectively after the hopper reaches below the sealing cylinder to relatively fix the hopper and the base.

6. The vacuum mixing apparatus of claim 5, wherein, The left locking structure includes a locking block, the right locking structure includes an extension plate, a movable plate and a screw rod, one end of the extension plate is arranged on the base, one end of the movable plate is rotationally arranged on the other end of the extension plate, a through hole is formed in the middle of the movable plate, the through hole extends along the thickness direction of the movable plate, a screw hole is formed in the end of the movable plate away from the extension plate and communicates with the through hole, the screw hole extends along the length direction of the movable plate, and one end of the screw rod is screwed into the screw hole; The movable plate is used for rotating to the hopper after the hopper reaches below the sealing cylinder until the locking block is accommodated in the through hole; and the screw rod is used for being screwed into the through hole after the locking block is accommodated in the through hole and abutting against the side of the locking block away from the base.

7. The vacuum mixing apparatus of claim 1, wherein The vacuum device includes a vacuum pump, a vacuum pipe, a vacuum valve and a vacuum breaking valve, one end of the vacuum pipe is connected to the vacuum pump, the other end of the vacuum pipe is connected to the sealing cylinder through the vacuum valve, and the vacuum breaking valve is arranged on any one of the vacuum pipe, the sealing cylinder and the hopper.

8. The vacuum mixing apparatus of claim 1, wherein, A first guide rod and a first guide sleeve are further included, a first guide channel recessed inward is formed in the base, one end of the first guide sleeve is inserted into the first guide channel, and one end of the first guide rod is arranged on the cross beam and the other end of the first guide rod is inserted into the first guide sleeve and slidably cooperates with the first guide sleeve.

9. The vacuum mixing apparatus of claim 1, wherein, A second guide rod and a second guide sleeve are further included, a second guide channel recessed inward is formed in the cross beam, one end of the second guide sleeve is inserted into the second guide channel, and one end of the second guide rod is arranged on the sealing cylinder and the other end of the second guide rod is inserted into the second guide sleeve and slidably cooperates with the second guide sleeve.

10. The vacuum mixing apparatus of claim 1, wherein, A sliding limiting sleeve is further included, the sliding limiting sleeve is sleeved on the guide pipe and slidably cooperates with the guide pipe, and one end of the sealing cylinder is sleeved on the sliding limiting sleeve.

Images