Bearing protection structure for automatic mixer

Abstract

This application relates to a bearing protection structure for an automatic mixer, belonging to the field of mechanical equipment protection. It includes a base and a mixing drum. The mixing drum has a discharge port at its lower end and a feed port at its upper end. A hollow rotating sleeve is rotatably connected to the base. An agitator is located inside the drum, and a mounting rod at the end of the agitator passes through the cavity of the rotating sleeve and is fixed to the base. A bearing body is located between the rotating sleeve and the mounting rod. The base has a transmission mechanism that drives the mixing drum to rotate. A dust sealing assembly is located inside the rotating sleeve between the bearing body and the mixing drum. The bearing body has a dust discharge hole located between the two, as well as an oil seal assembly and other structures. This application achieves the technical effect of preventing dust from entering the bearing body, effectively protecting the bearing, extending the bearing's service life, facilitating the discharge of ingressed dust, and improving the operational stability and reliability of the automatic mixer.

Description

Technical Field

[0001] This application relates to the field of material mixing equipment technology, and in particular to a bearing protection structure for an automatic mixer. Background Technology

[0002] Material mixing equipment is widely used in numerous industries such as chemical, food, pharmaceutical, feed, ceramics, and metallurgy, greatly promoting the production development of these industries. For example, in the chemical industry, precise material mixing helps improve the efficiency of chemical reactions and product quality; in the food and pharmaceutical industries, good mixing ensures the uniformity of product components, guaranteeing product safety and stability. The V-type mixer, as a highly efficient asymmetric mixer, has become one of the basic pieces of equipment for enterprises due to its reasonable and simple structure, sealed operation, convenient feeding and discharging, and easy-to-clean cylinder. It can automatically mix materials within the cylinder, meeting the material mixing needs of different industries.

[0003] Chinese patent CN102451636A discloses a stirring-type V-type mixer, which has a base and a V-shaped mixing cylinder. The mixing cylinder consists of two cylindrical tubes, with a discharge port at the lower joint of the two tubes, a feed port at the upper end of one tube, and a vacuum device at the upper end of the other tube. Two hollow rotating shafts are symmetrically arranged on the two cylindrical tubes and are rotatably connected to the base. An agitator is installed inside the mixing cylinder, with its end passing through the cavity of the rotating shaft and fixedly connected to the base. A transmission mechanism is installed on the base to connect the rotating shafts and drive the mixing cylinder to rotate. The transmission mechanism drives the rotating shafts and the mixing cylinder to rotate as a whole, and the agitator assists in stirring the material inside the mixing cylinder during rotation.

[0004] The aforementioned technologies have the following drawbacks: In actual installation, the rotating shaft has a bearing inside to support the mounting rod at the end of the agitator that is fixedly connected to the base. However, during the mixing process, the material inside the mixing drum can easily escape from the gap between the rotating shaft and the mounting rod to the bearing, affecting the bearing life. Therefore, this needs to be improved. Utility Model Content

[0005] To reduce the impact of escaped material on the bearing, this application provides a bearing protection structure for an automatic mixer.

[0006] An automatic mixer bearing protection structure includes a base and a mixing cylinder. The mixing cylinder has a discharge port at its lower end and a feed port at its upper end. A hollow rotating sleeve is provided on the side of the mixing cylinder, and the rotating sleeve is rotatably connected to the base. An agitator is provided inside the mixing cylinder. The end of the agitator has a mounting rod that passes through the cavity of the rotating sleeve and is fixedly connected to the base. A bearing body is provided inside the rotating sleeve and between it and the mounting rod. The base is equipped with a transmission mechanism that connects to the rotating shaft to drive the mixing cylinder to rotate. A dust sealing assembly is provided inside the rotating sleeve and is located between the bearing body and the mixing cylinder. A dust discharge hole is provided on the bearing body and is located between the bearing body and the dust sealing assembly.

[0007] By adopting the above technical solution, the dust seal assembly located between the bearing body and the mixing cylinder can prevent the material in the mixing cylinder from escaping to the bearing during stirring; a dust discharge hole is opened in the bearing body between the dust seal assembly and the bearing body, which can further discharge a small amount of escaped material during the rotation of the bearing bush, thereby reducing the impact of escaped material on the bearing and improving the bearing service life.

[0008] Preferably, the dust sealing assembly includes an annular dust sealing frame, which is fixedly connected to a rotating bushing. An annular dust sealing retaining ring is provided inside the dust sealing frame, and the inner edge of the dust sealing retaining ring abuts against the mounting rod.

[0009] By adopting the above technical solution, the dust sealing assembly consisting of an annular dust sealing skeleton and a dust sealing retaining ring in the automatic mixer can effectively reduce the escape of material from the mixing drum to the bearing through the gap between the rotating bushing and the mounting rod, thereby reducing the impact of the escaped material on the bearing and extending the bearing's service life.

[0010] Preferably, an oil seal assembly is also provided between the dust seal assembly and the bearing body.

[0011] By adopting the above technical solution, an oil seal assembly is set between the dust seal assembly and the bearing body, which can further enhance the protection of the bearing. On the one hand, it reduces the impact of materials on the bearing and improves the bearing service life; on the other hand, it can also reduce the penetration of lubricating oil from the bearing body into the material in the stirring state and affect the material.

[0012] Preferably, the oil seal assembly includes an annular oil seal skeleton, which is fixedly connected to the rotating shaft sleeve. An annular oil seal retaining ring is provided inside the oil seal skeleton. The inner edge of the oil seal retaining ring abuts against the mounting rod, and an annular fastener is provided on the outer side of the oil seal retaining ring.

[0013] By adopting the above technical solution, fixing the oil seal skeleton to the rotating shaft sleeve and abutting the inner edge of the oil seal retaining ring against the mounting rod can further prevent materials from entering the bearing through the gap between the rotating shaft sleeve and the mounting rod. The ring-shaped fasteners on the outside of the oil seal retaining ring can enhance the sealing effect and better protect the bearing.

[0014] Preferably, the fastener is a ring-shaped fastening spring, and the outer edge of the oil seal retaining ring is provided with an anti-loosening groove for the fastener to be inserted.

[0015] By adopting the above technical solution, the outer side of the oil seal retaining ring uses a ring-shaped fastening spring as a fastener, which, together with the anti-loosening ring groove, can make the oil seal retaining ring fit tightly with the mounting rod and prevent the fastener from falling off, thereby enhancing the sealing effect and effectively reducing the impact of escaped materials on the bearing.

[0016] Preferably, the rotating bushing has a dust-catching ring groove inside, and the dust discharge holes are evenly distributed along the circumference of the rotating bushing and are connected to the dust-catching ring groove.

[0017] By adopting the above technical solution, a dust-blocking ring groove is set inside the rotating bushing, and the dust discharge holes are evenly distributed along the circumference of the rotating bushing and connected to the dust-blocking ring groove. This can intercept the material escaping from the mixing drum, so that the material first gathers in the dust-blocking ring groove and is then discharged through the evenly distributed dust discharge holes. This further reduces the probability of material entering the bearing and reduces the impact of the escaped material on the bearing.

[0018] Preferably, the base is connected to a dust collection ring, which is located on the outside of the rotating bushing and covers several dust discharge holes.

[0019] By adopting the above technical solution, when the automatic mixer is running, the dust collection ring covering the outer side of the rotating bushing and several dust discharge holes can effectively collect the escaped material discharged from the dust discharge holes, preventing the material from scattering everywhere.

[0020] Preferably, the bottom of the dust collection ring is provided with a dust discharge port, and a dust discharge valve is provided inside the dust discharge port.

[0021] By adopting the above technical solution, a dust discharge port with a dust discharge valve is set at the bottom of the dust collection ring in the bearing protection structure of the automatic mixer. This allows for the timely and timely discharge of intercepted escaped materials, reducing the accumulation of escaped materials in the dust collection ring and further reducing the impact of escaped materials on the bearing.

[0022] In summary, this application includes at least one of the following beneficial technical effects:

[0023] 1. A dust seal assembly is installed inside the rotating bushing between the bearing body and the mixing cylinder to prevent material in the mixing cylinder from escaping to the bearing and reduce the impact of the escaping material on the bearing;

[0024] 2. A dust discharge hole is provided in the bearing body between the bearing body and the dust seal assembly to discharge materials that enter the area, further reducing the impact of materials on the bearing;

[0025] 3. The rotating bushing is equipped with a dust-collecting ring groove, and the dust discharge holes are evenly distributed along the circumference of the rotating bushing and are connected to it, which is conducive to collecting and discharging materials and better protecting the bearing. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the structure of an embodiment of this application;

[0027] Figure 2 This is a structural diagram illustrating the connection relationship between the dust sealing assembly, the dust discharge hole, and the oil seal assembly in an embodiment of this application.

[0028] In the picture:

[0029] 1. Base; 11. Mixing cylinder; 12. Rotating bushing; 13. Transmission mechanism; 14. Discharge port; 15. Inlet port; 16. Agitator; 17. Mounting rod; 18. Bearing body; 180. Dust discharge hole; 181. Dust trap groove; 19. Dust collection ring; 191. Dust discharge port; 192. Dust discharge valve;

[0030] 2. Dust sealing assembly; 21. Dust sealing frame; 22. Dust sealing retaining ring;

[0031] 3. Oil seal assembly; 31. Oil seal skeleton; 32. Oil seal retaining ring; 33. Fastener; 34. Anti-detachment ring groove. Detailed Implementation

[0032] The technical solutions in the embodiments of this utility model will be further described in detail below with reference to the accompanying drawings. The described embodiments are only possible technical implementations of this utility model, but are not limited thereto. Other embodiments obtained by those skilled in the art in conjunction with the embodiments of this utility model without creative effort are also within the protection scope of this utility model.

[0033] This application mainly adopts a solution of providing a dust sealing component and a dust discharge hole inside the rotating bushing, which achieves the effect of reducing the impact of escaped materials on the bearing. The following is a further detailed description of this application.

[0034] Example

[0035] Reference Figure 1The automatic mixer bearing protection structure provided in this application includes a base 1, a mixing cylinder 11, a rotating bushing 12, and a transmission mechanism 13. The mixing cylinder 11 has a discharge port 14 at its lower end and a feed port 15 at its upper end. The side of the mixing cylinder 11 is fixedly connected to the hollow rotating bushing 12, and the rotating bushing 12 is rotatably connected to the base 1. The transmission mechanism 13 is located inside the base 1 to drive the rotating bushing 12 and the mixing cylinder 11 to rotate. A stirrer 16 is provided inside the mixing cylinder 11, and a mounting rod 17 is fixedly connected to the end of the stirrer 16. The mounting rod 17 passes through the cavity of the rotating bushing 12 and is fixedly connected to the base 1. A bearing body 18 is provided inside the rotating bushing 12 and between the mounting rod 17 to provide effective support between the mounting rod 17 and the rotating bushing 12.

[0036] Reference Figure 2 The rotating bushing 12 is equipped with a dust sealing component 2, which is located between the bearing body 18 and the mixing cylinder 11. The bearing body 18 has a dust discharge hole 180, which is located between the bearing body 18 and the dust sealing component 2. This structure can effectively prevent the material escaping from the mixing cylinder 11 from contacting the bearing body 18, thus reducing the impact on the bearing. Because the dust sealing component 2 plays a preliminary blocking role, the dust discharge hole 180 can discharge some of the material that has entered the rotating bushing 12.

[0037] Reference Figure 2 Specifically, the dust seal assembly 2 includes a dust seal skeleton 21 and a dust seal retaining ring 22. The dust seal skeleton 21 is a ring-shaped structure, usually made of metal or high-strength plastic, possessing a certain strength and rigidity, and can be securely fixed to the rotating bushing 12, for example, by welding or bolting. In other embodiments, it can also be manufactured by integral casting for a more robust structure. The dust seal retaining ring 22 is also ring-shaped, generally made of elastic materials such as rubber, offering good elasticity and wear resistance. It is positioned inside the dust seal skeleton 21 with its inner edge abutting against the mounting rod 17. This arrangement allows for a good fit to the mounting rod 17, reducing the gap between them for material passage. In other embodiments, the dust seal retaining ring 22 can also be made of silicone, which may provide better sealing. The dust seal retaining ring 22 and the dust seal skeleton 21 can be glued together, ensuring a tight fit inside the dust seal skeleton 21.

[0038] Reference Figure 2Specifically, the rotating sleeve 12 has a dust-collecting ring groove 181 inside. The dust-collecting ring groove 181 is located on the side of the dust sealing assembly 2 away from the mixing cylinder 11. The dust-collecting ring groove 181 has an annular concave structure, which can collect a small amount of material escaping from the mixing cylinder 11. The rotating sleeve 12 has several dust discharge holes 180 evenly distributed around its circumference and connected to the dust-collecting ring groove 181. The dust discharge holes 180 are circular or square through holes. With this arrangement, the material collected in the dust-collecting ring groove 181 can be discharged from the rotating sleeve 12 through the dust discharge holes 180. For example, when the mixing cylinder 11 and the rotating sleeve 12 rotate as a whole, due to centrifugal force and other effects, the material entering the dust-collecting ring groove 181 will be more easily discharged through the dust discharge holes 180.

[0039] Reference Figure 2 Correspondingly, the base 1 is connected to a dust-collecting baffle ring 19. The dust-collecting baffle ring 19 is an annular baffle structure, usually made of thin metal sheet, which has a certain degree of flexibility and corrosion resistance. It is located on the outside of the rotating bushing 12 and covers several dust discharge holes 180, which can catch the material discharged from the dust discharge holes 180 to a greater extent and prevent the material from scattering everywhere. The dust-collecting baffle ring 19 and the base 1 can be connected by a bracket with bolts or buckles to ensure that it is firmly installed. In other embodiments, the bracket can also be connected to the base 1 by magnetic attraction, which is convenient for disassembly and cleaning.

[0040] The dust collection ring 19 has a dust discharge port 191 at its bottom. The dust discharge port 191 is an opening at the bottom of the dust collection ring 19 for discharging the material collected inside the dust collection ring 19. A dust discharge valve 192 is installed inside the dust discharge port 191. The dust discharge valve 192 can be a manual valve or an automatic valve. The manual valve requires manual operation to open and close, while the automatic valve opens and closes automatically according to the accumulation of material inside the dust collection ring 19.

[0041] Reference Figure 2An oil seal assembly 3 is also provided between the dust seal assembly 2 and the bearing body 18. Specifically, the oil seal assembly 3 includes an oil seal skeleton 31, an oil seal retaining ring 32, and a fastener 33. The oil seal skeleton 31 is annular, generally made of metal, with high strength and not easily deformed. It is fixedly connected to the rotating bushing 12, and can also be connected by welding, bolts, etc. The oil seal retaining ring 32 is annular, made of sealing materials such as rubber, and its inner edge abuts against the mounting rod 17 to perform a sealing function. In other practical examples, the oil seal retaining ring 32 can be made of fluororubber, which has better high temperature resistance and oil resistance. An annular fastener 33 is also provided on the outer side of the oil seal retaining ring 32. The fastener 33 is an annular fastening spring, which is generally made of carbon steel or other materials and has good elasticity. In this embodiment, the outer edge of the oil seal retaining ring 32 is provided with an anti-detachment ring groove 34 for the fastener 33 to be inserted. The anti-detachment ring groove 34 is annular groove, in which the fastening spring is inserted to prevent the oil seal retaining ring 32 from falling off. This structure allows the oil seal assembly 3 to further enhance the protection of the bearing body 18, further reduce material intrusion, and also reduce lubricating oil leakage.

[0042] The implementation principle of this embodiment is as follows: by setting a dust seal assembly 2 and an oil seal assembly 3 inside the rotating bushing 12, and by opening a dust discharge hole 180 and a dust-catching ring groove 181, a complete protection system is formed. The dust seal assembly 2 initially blocks the material escaping from the mixing cylinder 11, and the oil seal assembly 3 further seals the area, preventing material and oil from entering the bearing body 18. In addition, the dust-catching ring groove 181 collects a small amount of intruding material, and the dust discharge hole 180 discharges the material from the rotating bushing 12. Then, the dust-catching ring 19 catches the discharged material and finally cleans it through the dust discharge port 191 and the dust discharge valve 192. This application effectively reduces the impact of escaped material on the bearing, extends the service life of the bearing, and greatly improves the reliability and stability of the automatic mixer compared with the prior art, while reducing the maintenance cost of the equipment.

[0043] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An automatic mixer bearing protection structure, comprising a base (1) and a mixing cylinder (11), wherein the mixing cylinder (11) has a discharge port (14) at its lower end and a feed port (15) at its upper end, a hollow rotating bushing (12) is provided on the side of the mixing cylinder (11), the rotating bushing (12) is rotatably connected to the base (1), a stirrer (16) is provided inside the mixing cylinder (11), the end of the stirrer (16) has a mounting rod (17) and the mounting rod (17) passes through the cavity of the rotating bushing (12) and is fixedly connected to the base (1), a bearing body (18) is provided inside the rotating bushing (12) and between the mounting rod (17), and the base (1) is equipped with a transmission mechanism (13) for connecting the rotating shaft to drive the mixing cylinder (11) to rotate, characterized in that: The rotating bushing (12) is provided with a dust sealing component (2), which is located between the bearing body (18) and the mixing cylinder (11). The bearing body (18) is provided with a dust discharge hole (180), which is located between the bearing body (18) and the dust sealing component (2).

2. The bearing protection structure for an automatic mixer according to claim 1, characterized in that: The dust sealing assembly (2) includes an annular dust sealing frame (21), which is fixedly connected to the rotating bushing (12). An annular dust sealing retaining ring (22) is provided inside the dust sealing frame (21), and the inner edge of the dust sealing retaining ring (22) abuts against the mounting rod (17).

3. The bearing protection structure for an automatic mixer according to claim 1, characterized in that: An oil seal assembly (3) is also provided between the dust seal assembly (2) and the bearing body (18).

4. The automatic mixer bearing protection structure according to claim 3, characterized in that: The oil seal assembly (3) includes an annular oil seal skeleton (31), which is fixedly connected to the rotating bushing (12). An annular oil seal retaining ring (32) is provided inside the oil seal skeleton (31). The inner edge of the oil seal retaining ring (32) abuts against the mounting rod (17), and an annular fastener (33) is provided on the outer side of the oil seal retaining ring (32).

5. The bearing protection structure for an automatic mixer according to claim 4, characterized in that: The fastener (33) is a ring-shaped fastening spring, and the outer edge of the oil seal retaining ring (32) is provided with an anti-detachment ring groove (34) for the fastener (33) to be inserted.

6. The bearing protection structure for an automatic mixer according to claim 1, characterized in that: The rotating bushing (12) has a dust-blocking ring groove (181) inside, and the dust discharge hole (180) is evenly distributed along the circumference of the rotating bushing (12) and is connected to the dust-blocking ring groove (181).

7. The bearing protection structure for an automatic mixer according to claim 1, characterized in that: The base (1) is connected to a dust collection ring (19), which is located outside the rotating bushing (12) and covers several dust discharge holes (180).

8. The bearing protection structure for an automatic mixer according to claim 7, characterized in that: The bottom of the dust collection ring (19) is provided with a dust discharge port (191), and a dust discharge valve (192) is provided inside the dust discharge port (191).

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