High-precision butt joint stirring mixer

Abstract

The utility model provides a high-precision butt joint stirring mixer, which belongs to the technical field of mixers, and comprises a hopper, a hopper cover, a stirring motor, a stirring shaft and a mixing rack, a lifting mechanism is used for coaxially fixing the hopper below the hopper cover and enabling the hopper to be lifted along the axial direction to be in butt joint with the hopper cover; the hopper cover comprises an upper disc body, a middle cylinder and a lower disc body, the periphery of the middle cylinder is sleeved with an inflation sealing ring, the inflation device inflates the inflation sealing ring after the hopper is lifted by the lifting mechanism to be in preliminary butt joint with the hopper cover, and the inflation sealing ring is inflated by the inflation device. One side, facing the inner wall of the hopper opening, of the stirring shaft is bulged and abuts against the inner wall of the hopper opening, so that the position of the hopper cover at the hopper opening is straightened to complete accurate positioning of the hopper cover and the hopper opening, and meanwhile, the driving shaft and the stirring shaft are connected through the universal coupling, so that the axial and circumferential deviation of the driving shaft and the stirring shaft can be compensated.

Description

Technical Field

[0001] This utility model relates to the field of mixer technology, specifically to a high-precision mixing machine. Background Technology

[0002] Mixers, as important industrial equipment, are widely used in various industries such as chemical, pharmaceutical, food, and building materials. Their main function is to uniformly mix materials of different components to obtain a homogeneous mixture that meets process requirements. Automated Guided Vehicles (AGVs) are intelligent transportation devices with automatic navigation and path planning capabilities, enabling automated material transfer and distribution within production workshops. By combining AGVs with mixing equipment, fully automated operations from material transfer to mixing processing can be achieved, significantly improving production efficiency and product quality.

[0003] Since most mixing hopper covers are fixed to the mixer frame by adjusting chains, when the servo lifting mechanism completes the clamping of the hopper, it also completes the docking of the mixing hopper cover with the mixing hopper. However, relying solely on this docking structure, the docking accuracy is insufficient, affecting the mixing performance of the mixer. Utility Model Content

[0004] The purpose of this invention is to overcome the shortcomings and deficiencies of the existing technology and to provide a high-precision mixing machine.

[0005] The technical solution adopted by this utility model is as follows: This application provides a high-precision docking mixing machine, including a hopper, a hopper cover, a stirring motor, a stirring shaft, and a mixing frame. A lifting mechanism is provided on the mixing frame. An adjusting chain is provided on the hopper cover and fixed to the mixing frame via the adjusting chain. The stirring motor is located on the mixing frame and above the hopper cover. The stirring motor includes a drive shaft, which is disposed on the hopper cover and coaxially arranged with the drive shaft. The lifting mechanism is used to coaxially fix the hopper below the hopper cover and allows the hopper to be lifted axially along its axis to dock with the hopper cover. A universal coupling is provided between the drive shaft and the stirring shaft. The hopper cover includes an upper plate, a middle cylinder, and a lower plate. An air-filled sealing ring is provided around the outer periphery of the middle cylinder. The air-filled sealing ring is located between the upper plate and the lower plate. A T-shaped air-filled pipe connected to the air-filled sealing ring is provided on the middle cylinder. One end of the T-shaped air-filled pipe fixes the air-filled sealing ring to the middle cylinder, and the other end is connected to an air-filling device. The hopper includes a hopper opening. The middle cylinder and the lower plate extend into the hopper opening. When the air-filled sealing ring is in an inflated state, its outer peripheral wall abuts against the upper plate, the middle cylinder, the lower plate, and the inner wall of the hopper opening to form a seal.

[0006] In some embodiments, a connecting cylinder is provided on the lower plate, the stirring shaft extends into the hopper through the connecting cylinder, and bearings are provided at both the upper and lower ends of the stirring shaft to connect with the connecting cylinder.

[0007] In some embodiments, the universal coupling outer cover is provided with a stop cover, the lower end of the stop cover is provided with a locking interface, the connecting cylinder is provided with a stop rod, the upper end of the stop rod extends into the locking interface, and there is a gap between the stop rod and the locking interface.

[0008] In some embodiments, a rotary sealing assembly is provided on the outer side of each of the two bearings, the rotary sealing assembly comprising at least two rotary seals.

[0009] In some embodiments, the upper end of the hopper is provided with a convex plate portion, and three locking mechanisms are evenly arranged along the circumference of the hopper cover. Each locking mechanism includes a locking cylinder and a locking seat. The upper part of the locking seat is connected to the locking cylinder, and the lower part of the seat is provided with a locking groove facing the hopper cover. The locking groove is a gradually opening clamping opening, and the upper plate body and the convex plate portion abut against the clamping opening.

[0010] In some embodiments, the adjusting chain includes a plurality of connecting links, adjusting links, and adjusting screws. The adjusting links are provided with threaded holes. One end of the adjusting screw is rotatably mounted on the connecting link near the adjusting link, and the other end is threadedly engaged with the threaded hole. Nuts are provided on the adjusting screws at both ends of the threaded hole.

[0011] In some embodiments, a breather is provided on the lower plate body for depressurizing the hopper during the mixing process, and the breather includes at least two filter structures.

[0012] In some embodiments, the mixing frame is provided with a plurality of buffer devices circumferentially arranged around the stirring shaft. Each buffer device includes a base, a sliding seat, a spring, and a bottom cover. The base is provided with a through slide, the sliding seat is slidably arranged along the slide, the bottom cover is located at the end of the slide away from the hopper, the spring abuts against the bottom cover and the sliding seat, a limiting protrusion is provided at the end of the sliding seat near the bottom cover, and a channel is provided at the end of the slide away from the hopper for the limiting protrusion to slide. The outer diameter of the limiting protrusion is larger than the inner diameter of the slide, and an abutment seat located on the hopper's moving path is provided on the sliding seat.

[0013] The beneficial effects of this utility model are as follows: In this utility model, after the hopper is initially connected to the hopper cover by the lifting mechanism, the inflation device inflates the inflation sealing ring, causing it to bulge on the side facing the inner wall of the hopper opening and abut against the inner wall of the hopper opening, thereby aligning the hopper cover at the hopper opening and completing the accurate positioning of the hopper cover and the hopper opening. At the same time, the drive shaft and the stirring shaft are connected by a universal coupling. Since the central axis of the hopper opening and the drive shaft have a spatial position offset due to manufacturing and processing problems, the universal coupling can compensate for the axial and circumferential deviations. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, obtaining other drawings based on these drawings without creative effort still falls within the scope of this utility model.

[0015] Figure 1 This is a schematic diagram of a high-precision docking mixing machine according to the present invention;

[0016] Figure 2 This is a partial schematic diagram of a high-precision docking mixing machine according to the present invention. Figure 1 ;

[0017] Figure 3 for Figure 2 Enlarged view of point A in the middle;

[0018] Figure 4 This is a partial schematic diagram of a high-precision docking mixing machine according to the present invention. Figure 2 ;

[0019] Figure 5 This is a schematic diagram of the layout of the locking mechanism in this utility model;

[0020] Figure 6 for Figure 2 Enlarged view of point B in the middle;

[0021] Figure 7 This is a schematic diagram of the adjusting chain in this utility model;

[0022] Figure 8 for Figure 2 A magnified view of point C in the middle. Detailed Implementation

[0023] The following description provides specific application scenarios and requirements for this specification, intended to enable those skilled in the art to make and use the contents of this specification. Various partial modifications to the disclosed embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments and applications without departing from the spirit and scope of this specification. Therefore, this specification is not limited to the embodiments shown, but rather to the widest scope consistent with the claims.

[0024] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "longitudinal", "lateral", "radial", "length", "width", "thickness", "upper", "lower", "left", "right", "front", "rear", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are mainly for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element or component to have a specific orientation, or to be constructed and operated in a specific orientation.

[0025] Secondly, the terms "first," "second," and similar words do not indicate any order, quantity, or importance, but are merely used to distinguish different components and should not be construed as limiting the embodiments of this application.

[0026] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "connected" should be interpreted broadly. For example, they can refer to fixed connections, detachable connections, or integral constructions; they can refer to mechanical connections or electrical connections; they can refer to direct connections or indirect connections through an intermediate medium, or internal connections between two devices, components, or parts.

[0027] Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0028] Regarding the accompanying drawings of this application, it should be clearly understood that the drawings are for illustrative and descriptive purposes only and are not intended to limit the scope of this specification. It should also be understood that the drawings are not drawn to scale.

[0029] Example 1:

[0030] like Figures 1 to 8As shown, this embodiment provides a high-precision mixing machine, including a hopper 1, a hopper cover 2, a stirring motor 3, a stirring shaft 4, and a mixing frame 5. The mixing frame 5 is equipped with a lifting mechanism 6. The lifting mechanism 6 can refer to the structure of existing mixers, typically driven by a servo motor in conjunction with a screw and slider mechanism, to lift the hopper 1 in the height direction. The hopper cover 2 is equipped with an adjusting chain 7 and is fixed to the mixing frame 5 via the adjusting chain 7. Specifically, the adjusting chain 7 includes several connecting links 700, adjusting links 701, and adjusting screws 702, such as... Figure 7 As shown, the hopper cover 2 and the mixer frame 5 are provided with a fixing ring, and the connecting chain link 700 adopts a conventional spring buckle structure for quick connection with the fixing ring. The adjusting chain link 701 is provided with a threaded hole. One end of the adjusting screw 702 is rotatably mounted on the connecting chain link 700 near the adjusting chain link 701, and the other end is threaded into the threaded hole. Nuts 703 are provided on both ends of the adjusting screw 702. By rotating the adjusting screw 702 and the nut 703, the length of the adjusting chain 7 can be adjusted so that the hopper cover 2 remains horizontal and at the required height.

[0031] Secondly, the stirring motor 3 is mounted on the mixing frame 5 and located above the hopper cover 2. The stirring motor 3 includes a drive shaft 300. The stirring shaft 4 is mounted on the hopper cover 2 and is coaxially mounted with the drive shaft 300. The lifting mechanism 6 is used to coaxially fix the hopper 1 below the hopper cover 2 and to lift the hopper 1 along its axial direction to dock with the hopper cover 2. The lifting mechanism 6 lifts the hopper 1 and initially docks it with the hopper cover 2.

[0032] Furthermore, the hopper cover 2 includes an upper plate 200, a middle cylinder 201, and a lower plate 202, which are welded together to form the hopper cover 2, as shown below. Figure 3As shown, an inflatable sealing ring 9 is provided around the outer periphery of the middle cylinder 201. The inflatable sealing ring 9 is square and has a cavity inside. The inflatable sealing ring 9 is located between the upper plate 200 and the lower plate 202. Preferably, the upper and lower sides of the inflatable sealing ring 9 abut against the upper plate 200 and the lower plate 202, respectively. A T-shaped inflation tube 10 is provided on the middle cylinder 201 and communicates with the inflatable sealing ring 9. One end of the T-shaped inflation tube 10 fixes the inflatable sealing ring 9 to the middle cylinder 201, and the other end is connected to an inflation device. The inflation device can be an air inflator, as long as it can inflate the sealing ring. The sealing ring 9 is inflated and deflated. The hopper 1 includes a hopper opening. The middle cylinder 201 and the lower plate 202 extend into the hopper opening. When the inflatable sealing ring 9 is inflated, its outer peripheral wall abuts against the upper plate 200, the middle cylinder 201, the lower plate 202, and the inner wall of the hopper opening to form a seal. Thus, after the hopper 1 is lifted and initially docked with the hopper cover 2, the inflation device inflates the inflatable sealing ring 9, causing it to bulge on the side facing the inner wall of the hopper opening and abut against the inner wall of the hopper opening, thereby aligning the hopper cover 2 at the hopper opening and completing the accurate positioning of the hopper cover 2 and the hopper opening.

[0033] Furthermore, a universal coupling 8 is provided between the drive shaft 300 and the stirring shaft 4. Since there is a spatial offset between the hopper opening and the central axis of the drive shaft 300 due to manufacturing and processing issues, the universal coupling 8 can compensate for the axial and circumferential deviations.

[0034] Optionally, since the hopper cover 2 is suspended, the actual position of the hopper cover 2 will float along the Y-axis. Therefore, the universal coupling 8 and the hopper cover 2 are connected by a spline pair to transmit power, which can adapt to this Y-axis floating change.

[0035] In this embodiment, the upper end of the hopper 1 is provided with a convex plate portion 100, and three locking mechanisms 15 are evenly arranged along the circumference of the hopper cover 2. Each locking mechanism 15 includes a locking cylinder 150 and a locking seat 151. The upper part of the locking seat 151 is connected to the locking cylinder 150, and the lower part of the seat is provided with a locking groove 152 facing the hopper cover 2. The locking groove 152 is a gradually opening clamp. The upper plate body 200 and the convex plate portion 100 abut against the clamp. The hopper cover 2 is fixed to the hopper 1 by the locking mechanism 15, and the stirring shaft 4 and the drive shaft 300 are also relatively fixed, thus ensuring that the universal coupling will not move.

[0036] In some embodiments, a connecting cylinder 11 is provided on the lower plate 202, and the stirring shaft 4 extends into the hopper 1 through the connecting cylinder 11. Bearings 12 are provided at both the upper and lower ends of the stirring shaft 4 and connected to the connecting cylinder 11. Meanwhile, a rotary sealing assembly 14 is provided on the outer side of each of the two bearings 12. The rotary sealing assembly 14 includes at least two rotary seals. Preferably, the rotary seals are lip seals, which ensures the smooth rotation of the stirring shaft 4 and the sealing between the stirring shaft 4 and the connecting cylinder 11.

[0037] Furthermore, the universal coupling 8 is provided with a stop cover 13, and the lower end of the stop cover 13 is provided with a locking interface 130. The connecting cylinder 11 is provided with a stop rod 110, and the upper end of the stop rod 110 extends into the locking interface 130. There is a gap between the stop rod 110 and the locking interface 130. The mixing shaft 4 of the mixer usually rotates at a high speed of 2900 rpm. Considering safety and cleanliness, part of the universal coupling 8 is covered inside by the stop cover 13. If the bearing 12 jams, the stop rod 110 will be locked in the locking interface 130 of the stop cover 13 to prevent the hopper cover 2 from swinging violently, thus improving the safety of the machine.

[0038] In this embodiment of the present disclosure, a breather 16 is provided on the lower plate 202. The breather 16 is used to relieve pressure in the hopper 1 during the mixing process. It includes at least two filter structures 160. When the material is stirred by the stirring shaft 4, the powder inside will be lifted up, and the internal gas will be heated to a certain temperature, which will cause the powder to spray out when the mixing ends and the hopper cover 2 is opened. Therefore, the breather 16 can relieve pressure in time during the mixing process to avoid this phenomenon.

[0039] like Figure 8As shown, several buffer devices 17 are arranged circumferentially around the stirring shaft 4 on the mixing frame 5. Each buffer device 17 includes a base 170, a sliding seat 171, a spring 172, and a bottom cover 173. A through slide 174 is provided inside the base 170. The sliding seat 171 slides along the slide 174. The bottom cover 173 is located at the end of the slide 174 away from the hopper 1. The spring 172 abuts against the bottom cover 173 and the sliding seat 171. A limit ring 175 is provided at the end of the sliding seat 171 near the bottom cover 173. The slide 174 is located at the end away from the hopper 1. The end is provided with a channel 176 for the sliding of the limiting protrusion 175. The outer diameter of the limiting protrusion 175 is larger than the inner diameter of the slide 174. The sliding seat 171 is provided with an abutment seat 177 located on the moving path of the hopper 1. The sliding seat 171 can be inserted into the slide 174 from the direction of the channel 176, and then the spring 172 can be inserted. Then the bottom cover 173 is fixed at the opening of the channel 176 and forms an abutment with the spring 172. With this setting, when the hopper 1 is lifted, it will not have a rigid collision with the hopper cover 2, thereby avoiding damage to the stirring shaft 4, drive shaft 300, universal coupling 8, etc.

[0040] In summary, after reading this detailed disclosure, those skilled in the art will understand that the foregoing detailed disclosure is presented by way of example only and is not restrictive. Although not explicitly stated herein, those skilled in the art will understand that the requirements of this application encompass various reasonable changes, improvements, and modifications to the embodiments. These changes, improvements, and modifications are intended to be made by this application and are within the spirit and scope of the exemplary embodiments of this application.

[0041] Furthermore, it should be understood that in the foregoing description of the embodiments of this application, various features are combined in a single embodiment, drawing, or description for the purpose of simplifying the understanding of a feature. However, this does not mean that the combination of these features is necessary, and those skilled in the art may readily identify some of the devices as separate embodiments when reading this application. That is, the embodiments in this application can also be understood as an integration of multiple sub-embodiments. It is also valid when each sub-embodiment contains fewer than all the features of a single foregoing disclosed embodiment.

[0042] Finally, it should be understood that the embodiments disclosed herein are illustrative of the principles of the embodiments of this application. Other modified embodiments are also within the scope of this application. Therefore, the embodiments disclosed herein are merely examples and not limitations. Those skilled in the art can adopt alternative configurations to implement the applications in this application based on the embodiments in this application. Therefore, the embodiments of this application are not limited to the embodiments precisely described in the application.

Claims

1. A high-precision mixing machine, comprising a hopper (1), a hopper cover (2), a mixing motor (3), a mixing shaft (4), and a mixing frame (5), wherein a lifting mechanism (6) is provided on the mixing frame (5), an adjusting chain (7) is provided on the hopper cover (2) and fixed to the mixing frame (5) by the adjusting chain (7), the mixing motor (3) is provided on the mixing frame (5) and located above the hopper cover (2), the mixing motor (3) includes a drive shaft (300), the mixing shaft (4) is provided on the hopper cover (2) and coaxially arranged with the drive shaft (300), the lifting mechanism (6) is used to coaxially fix the hopper (1) below the hopper cover (2) and enable the hopper (1) to be lifted along its axial direction and docked with the hopper cover (2), characterized in that, A universal coupling (8) is provided between the drive shaft (300) and the stirring shaft (4). The hopper cover (2) includes an upper plate (200), a middle cylinder (201), and a lower plate (202). An air-filled sealing ring (9) is provided around the outer periphery of the middle cylinder (201). The air-filled sealing ring (9) is located between the upper plate (200) and the lower plate (202). A T-shaped inflatable ring connected to the air-filled sealing ring (9) is provided on the middle cylinder (201). The air pipe (10) has one end of the T-shaped air pipe (10) fixing the air sealing ring (9) to the middle cylinder (201), and the other end is connected to an air inflation device. The hopper (1) includes a hopper opening. The middle cylinder (201) and the lower plate (202) extend into the hopper opening. When the air sealing ring (9) is in an inflated state, its outer peripheral wall abuts against the upper plate (200), the middle cylinder (201), the lower plate (202), and the inner wall of the hopper opening to form a seal.

2. The high-precision docking mixer according to claim 1, characterized in that, The lower plate (202) is provided with a connecting cylinder (11), and the stirring shaft (4) passes through the connecting cylinder (11) and extends into the hopper (1). Both the upper and lower ends of the stirring shaft (4) are provided with bearings (12) and connected to the connecting cylinder (11).

3. The high-precision docking mixer according to claim 2, characterized in that, The universal coupling (8) is provided with a stop cover (13), and the lower end of the stop cover (13) is provided with a locking interface (130). The connecting cylinder (11) is provided with a stop rod (110), the upper end of the stop rod (110) extends into the locking interface (130), and there is a gap between the stop rod (110) and the locking interface (130).

4. The high-precision docking mixer according to claim 2, characterized in that, Both bearings (12) are provided with a rotary sealing assembly (14) on their outer sides, the rotary sealing assembly (14) comprising at least two rotary seals.

5. A high-precision docking mixer according to claim 1, characterized in that, The upper end of the hopper (1) is provided with a convex plate (100), and three locking mechanisms (15) are evenly arranged along the circumference of the hopper cover (2). The locking mechanism (15) includes a locking cylinder (150) and a locking seat (151). The upper part of the locking seat (151) is connected to the locking cylinder (150), and the lower part of the seat is provided with a locking groove (152) facing the hopper cover (2). The locking groove (152) is a gradually opening clamp. The upper plate (200) and the convex plate (100) abut against each other in the clamp.

6. A high-precision docking mixer according to claim 1, characterized in that, The adjusting chain (7) includes several connecting links (700), adjusting links (701), and adjusting screws (702). The adjusting links (701) are provided with threaded holes. One end of the adjusting screw (702) is rotatably mounted on the connecting link (700) near the adjusting link (701), and the other end is threaded into the threaded hole. Nuts (703) are provided on both ends of the adjusting screw (702) of the threaded hole.

7. A high-precision docking mixer according to claim 1, characterized in that, The lower plate (202) is provided with a breather (16) for depressurizing the hopper (1) during the mixing process, and the breather (16) includes at least two filter structures (160).

8. A high-precision docking mixer according to claim 1, characterized in that, The mixing frame (5) is provided with several buffer devices (17) arranged circumferentially around the stirring shaft (4). Each buffer device (17) includes a base (170), a sliding seat (171), a spring (172), and a bottom cover (173). The base (170) has a through slide (174) inside. The sliding seat (171) slides along the slide (174). The bottom cover (173) is located at the end of the slide (174) away from the hopper (1). The spring (172) and the bottom cover (173) are arranged circumferentially around the stirring shaft (4). The slide (171) is abutted between the bottom cover (173) and the sliding seat (171). The sliding seat (171) is provided with a limiting protrusion (175) at one end near the bottom cover (173). The slide (174) is provided with a channel (176) for the limiting protrusion (175) to slide at one end away from the hopper (1). The outer diameter of the limiting protrusion (175) is larger than the inner diameter of the slide (174). The sliding seat (171) is provided with an abutment seat (177) located on the moving path of the hopper (1).

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