Stirring machine with adjustable scraping arm

Abstract

A stirring machine with an adjustable scraping arm comprises a machine body, a stirring barrel, a top cover, a stirring unit and a scraping unit, the scraping unit comprises an adjustable mounting base, the scraping arm and a scraper, and the adjustable mounting base is fixed to the upper surface of the top cover through a plurality of positioning bolts capable of moving in horizontal adjusting holes; a connecting column is arranged at the top of the scraping arm, a clamping hoop is arranged on the adjustable mounting seat, and the clamping hoop tightly holds the connecting column when the clamping bolt is screwed; a mounting part is arranged at the bottom of the scraping arm; a plurality of scrapers are continuously mounted from top to bottom along the mounting part. According to the embodiment of the utility model, the scraping arm for mounting the scraper is fixed on the adjustable mounting seat positioned on the outer side, the adjustable mounting seat can be adjusted to translate, swing and lift by loosening the positioning bolt or the clamping bolt outside the equipment, the distance between the scraper and the inner wall of the stirring barrel can be adjusted outside, the operation is convenient and safe, and the practicability is high. The adjusting structure is located outside the stirrer and does not occupy the internal space of the stirring barrel, and the compact and efficient requirements of the stirrer are met.

Description

Technical Field

[0001] This utility model belongs to the field of mixer technology, and in particular relates to a mixer with an adjustable scraper arm. Background Technology

[0002] Mixers, as commonly used engineering machinery, are widely used in construction, chemical and other fields to mix various materials evenly. During the mixing process, some material often adheres to the inner wall of the mixing drum, preventing this material from being fully mixed and thus affecting the mixing effect. To solve this problem, traditional mixers typically have a scraper arm on the mixing device, with scrapers installed on the scraper arm. The scrapers are used to scrape the inner wall of the mixing drum, removing the adhered material and improving the mixing quality.

[0003] However, the scrapers used in existing technologies have the following problems: Over long-term use, the scrapers gradually wear down and shorten, increasing the gap between the scraper and the inner wall of the mixing tank, significantly reducing the scraping effect. To ensure the scraping effect, the gap between the scraper and the inner wall of the mixing tank usually needs to be adjusted periodically. Currently, the common adjustment method is to adjust the gap through a groove on the scraper arm. This involves manually entering the mixing tank, removing the bolts securing the scraper, and using external force to tap the scraper blades to adjust the gap, followed by retightening the scraper. However, this method is unsafe; replacing or adjusting the scraper requires manual entry into the mixing tank, which is a confined and risky operation, posing safety hazards. The operation is also complex, as the scraper adjustment mechanism is located inside the mixing tank, making it inconvenient to operate and time-consuming and labor-intensive. Furthermore, the scraper adjustment device is located internally, occupying a large amount of internal space, which is difficult to meet the requirements of modern engineering machinery for compactness and efficiency. Utility Model Content

[0004] In view of the shortcomings of the related technologies, this utility model provides a mixer with an adjustable scraper arm to solve the problems of inconvenience, safety and space occupation caused by the current scraper adjustment structure requiring entry into the mixing tank for adjustment.

[0005] This utility model provides a mixer with an adjustable scraper arm, comprising:

[0006] Organism;

[0007] The mixing tank is mounted on the machine body and rotates under the drive of a rotary drive motor mounted on the machine body;

[0008] The top cover is installed on the machine body and located above the mixing tank;

[0009] The mixing unit has a mixing drive motor and a mixing device. The mixing drive motor is mounted on the top cover, and the mixing device is connected to the mixing drive motor and extends into the mixing tank. The mixing drive motor drives the mixing device to rotate, so as to mix the material in the mixing tank.

[0010] The scraping unit is installed on the top cover and extends into the mixing tank;

[0011] The scraping unit includes:

[0012] An adjustable mounting base is installed on the upper surface of the top cover;

[0013] The scraper arm is connected to an adjustable mounting base at the top and located inside the mixing tank at the bottom.

[0014] The scraper is mounted on the scraper arm;

[0015] The adjustable mounting base is fixed to the upper surface of the top cover by multiple positioning bolts. The positioning bolts all pass through the corresponding horizontal adjustment holes on the adjustable mounting base. The multiple horizontal adjustment holes are all slotted holes and are parallel to each other.

[0016] A connecting column is provided at the top of the scraper arm, and a clamping hoop is provided on the adjustable mounting base. The clamping hoop passes through the connecting column. When the clamping bolt installed on the opening on one side of the clamping hoop is tightened, the clamping hoop hugs the connecting column to fix the scraper arm to the adjustable mounting base.

[0017] The scraper arm has a vertically mounted mounting section at its bottom, and multiple scrapers are continuously mounted along the mounting section from top to bottom, with each scraper attached to the inner wall of the mixing tank.

[0018] In some embodiments, a limit adjustment seat is installed on the top cover, and a limit adjustment screw is installed on the limit adjustment seat. The head of one end of the limit adjustment screw is located outside the limit adjustment seat, and the other end of the limit adjustment screw passes through the limit adjustment seat and is threadedly connected to a limit adjustment nut fixedly installed on the adjustable mounting base. The limit adjustment screw is parallel to the horizontal adjustment hole.

[0019] In some embodiments, a cantilever is horizontally connected to the top of the mounting part, and a connecting stud provided at the bottom of the connecting column is threadedly connected to the assembly hole provided on the cantilever.

[0020] As the material pushes against the scraper as the mixing tank rotates, the cantilever tightens and presses against the limiting step set at the top of the connecting stud.

[0021] In some embodiments, the scraping unit further includes a bottom scraper, which is horizontally arranged with one end fixedly installed at the bottom of the mounting part and attached to the bottom surface of the mixing tank.

[0022] In some embodiments, the bottom scraper has an included angle with the radial direction of the mixing tank.

[0023] In some embodiments, the bottom scraper is arc-shaped, and as the mixing tank rotates, the material is pushed against the concave side surface of the bottom scraper, and this side surface is aligned with the surface of the mounting part and the corresponding side of the scraper on the same arc.

[0024] In some embodiments, the lowest scraper and the bottom of the mounting part are both attached to the bottom surface of the mixing tank, and the scraping assembly consisting of the bottom scraper, the mounting part and the scraper has a horizontal length greater than the radius of the mixing tank.

[0025] In some embodiments, the adjustable mounting base is eccentrically positioned relative to the mixing tank.

[0026] Compared with the prior art, the beneficial effects of this application are as follows: In the embodiment of this utility model, the scraper arm on which the scraper is installed is fixed on an adjustable mounting base located on the outside. The adjustable mounting base can be adjusted for translation, swinging and lifting by loosening or tightening the positioning bolts outside the equipment. The distance between the scraper and the inner wall of the mixing tank can be adjusted externally, which is convenient and safe to operate. The adjustment structure is located in the external space of the mixer and will not occupy the internal space of the mixing tank, thereby improving the utilization rate of the internal space of the mixing tank and meeting the requirements of compact and efficient mixer. It solves the problem that the current scraper adjustment structure requires entering the mixing tank for adjustment, which leads to inconvenience and safety and occupies internal space. Attached Figure Description

[0027] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings:

[0028] Figure 1 This is a schematic diagram of the structure of the mixer with adjustable scraper arm according to this utility model. Figure 1 ;

[0029] Figure 2 This is a schematic diagram of the structure of the mixer with adjustable scraper arm according to this utility model. Figure 2 ;

[0030] In the picture:

[0031] 1. Mixing tank; 2. Top cover; 21. Limit adjustment seat; 22. Limit adjustment screw; 23. Limit adjustment nut;

[0032] 3. Scraping unit; 31. Adjustable mounting base; 311. Horizontal adjustment hole; 312. Clamping hoop; 32. Scraper arm; 321. Connecting column; 322. Mounting part; 323. Cantilever; 324. Connecting stud; 325. Assembly hole; 326. Limiting step; 33. Scraper blade; 34. Bottom scraper rod; 301. Positioning bolt; 302. Clamping bolt. Detailed Implementation

[0033] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0034] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0035] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0036] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0037] like Figures 1 to 2 As shown in the schematic embodiment of the present invention, the mixer with adjustable scraper arm includes a body (not shown in the figure), a mixing tank 1, a top cover 2, a mixing unit (not shown in the figure) and a scraping unit 3.

[0038] The mixing tank 1 is rotatably mounted on the machine body and is driven by a rotary drive motor mounted on the machine body. The top cover 2 is mounted on the machine body and located above the mixing tank 1, used to close the port at the top of the mixing tank 1. To add materials during mixing or to pour materials out after mixing, the top cover 2 can be mounted on the machine body via a hinged or detachable connection, allowing the port of the mixing tank 1 to be opened by flipping or disassembling. The mixing unit has a mixing drive motor and a mixing device. The mixing drive motor is mounted on the top cover 2, and the mixing device is connected to the mixing drive motor and extends into the mixing tank 1.

[0039] After the material is put into the mixing tank 1, the stirring drive motor drives the stirring device to rotate and stir the material in the mixing tank 1. At the same time, the rotation drive motor drives the mixing tank 1 to rotate, so that the stirring device rotates relative to the mixing tank 1, and stirs and mixes the material in all parts of the mixing tank 1.

[0040] The scraping unit 3 is installed on the top cover 2 and extends into the mixing tank 1. It remains fixed and the rotating mixing tank 1 causes it to rotate relative to the top cover 2, scraping the inner wall of the mixing tank 1 to remove the material adhering to the inner wall of the mixing tank 1, so that it can resume flow and be fully mixed.

[0041] The scraping unit 3 includes an adjustable mounting base 31, a scraper arm 32, and a scraper blade 33. The adjustable mounting base 31 is installed on the upper surface of the top cover 2, positioning it externally. The scraper arm 32 is located inside the mixing tank 1, with its top end extending out of the mixing tank 1 and fixedly connected to the adjustable mounting base 31. The scraper blade 33 is mounted on the scraper arm 32, which supports the scraper blade 33, causing the scraper blade 33 to adhere to the inner wall of the mixing tank 1, thereby scraping the material from the inner wall of the mixing tank 1 as it rotates.

[0042] The adjustable mounting base 31 is fixed to the upper surface of the top cover 2 by multiple positioning bolts 301. Each positioning bolt 301 passes through a corresponding horizontal adjustment hole 311 on the adjustable mounting base 31. These horizontal adjustment holes 311 are oblong and parallel to each other. A connecting post 321 is provided at the top of the scraper arm 32. A clamping hoop 312 is provided on the adjustable mounting base 31. The clamping hoop 312 passes through the connecting post 321. When the clamping bolt 302 installed on one side opening of the clamping hoop 312 is tightened, the clamping hoop 312 clamps the connecting post 321, thereby fixing the scraper arm 32 to the adjustable mounting base 31. The scraper arm 32 has a vertically arranged mounting part 322 at its bottom. Multiple scrapers 33 are continuously installed along the mounting part 322 from top to bottom, and all scrapers 33 are attached to the inner wall of the mixing tank 1.

[0043] Multiple vertically arranged scrapers 33 cover the inner side wall of the mixing tank 1 vertically, thus effectively scraping away the material adhering to the inner side wall when the mixing tank 1 rotates. After prolonged use, the scrapers 33 become shorter due to wear, resulting in a larger gap between the scrapers 33 and the inner wall of the mixing tank 1. This prevents the scrapers 33 from effectively scraping away the material adhering to the inner wall of the mixing tank 1. At this time, rotating the positioning bolt 301 loosens its clamping and fixing of the adjustable mounting base 31. By sliding the positioning bolt 301 in the horizontal adjustment hole 311, the adjustable mounting base 31 can move horizontally, and the scraper arm 32 and scraper 33 move accordingly. Adjusting the gap between the scraper 33 and the inner side wall of the mixing tank 1 allows the worn and shortened scraper 33 to once again adhere to the inner wall of the mixing tank 1, maintaining the good scraping effect of the scraper 33.

[0044] Since the stroke of the horizontal adjustment hole 311 is limited, when the scraper 33 still has a large gap with the inner wall of the mixing tank 1 after the adjustable mounting base 31 is moved laterally, the clamping bolt 302 is rotated to loosen the clamping clamp 312 from the connecting column 321. At this time, the connecting column 321 can be rotated so that the scraper arm 32 moves radially to make the scraper 33 move by swinging, further reducing the gap between the scraper 33 and the inner wall of the mixing tank 1. Then the clamping bolt 302 is tightened to restore the clamping clamp 312 from the connecting column 321, so that the scraper 33 is fixed in a position that can effectively scrape off the material adhering to the mixing tank 1.

[0045] Due to differences in the fluidity and viscosity of the materials, the height at which they are more likely to adhere varies as the mixing tank 1 rotates under centrifugal force. When the clamping hoop 312 is loosened from the connecting column 321, the connecting column 321 can move axially, raising and lowering the scraper arm 32 to adjust the height of the scraper 33. Then, the clamping bolt 302 is tightened to restore the clamping hoop 312's tight grip on the connecting column 321, fixing the scraper 33 at a height at which the material is more likely to adhere, thus improving the scraper 33's targeting of the material and enhancing the material scraping effect.

[0046] In the above illustrative embodiment, in the mixer with adjustable scraper arm, the scraper arm 32 on which the scraper 33 is installed is fixed on the adjustable mounting base 31 located on the outside. The adjustable mounting base 31 is exposed on the outside. By loosening the positioning bolt 301 and tightening the clamping bolt 302, the scraper arm can be adjusted in terms of translation, swinging and lifting. The height position, radial outward position and angular position of the scraper 33 can all be adjusted, which improves the flexibility of adjustment, puts the scraper 33 in a better position, maximizes the scraping effect, and the distance between the scraper 33 and the inner wall of the mixing tank 1 can be adjusted from the outside. The operation is convenient and safe. The adjustment structure is located in the external space of the mixer and does not occupy the internal space of the mixing tank 1, which improves the utilization rate of the internal space of the mixing tank 1 and meets the requirements of compact and efficient mixer. It solves the problem that the current scraper 33 adjustment structure needs to enter the mixing tank 1 for adjustment, which is inconvenient and unsafe and occupies internal space.

[0047] In some embodiments, a limit adjustment seat 21 is installed on the top cover 2, and a limit adjustment screw 22 is installed on the limit adjustment seat 21. The head of one end of the limit adjustment screw 22 is located outside the limit adjustment seat 21, and the other end of the limit adjustment screw 22 is threadedly connected to the limit adjustment nut 23 fixedly installed on the adjustable mounting base 31 after passing through the limit adjustment seat 21. The limit adjustment screw 22 is parallel to the horizontal adjustment hole 311.

[0048] When the scraper 33 is new, the limiting adjustment nut 23 is close to the limiting adjustment seat 21. After the scraper 33 wears out, the limiting adjustment screw 22 is rotated to screw the limiting adjustment nut 23 inward more, thereby pulling the limiting adjustment nut 23 outward and closer to the limiting adjustment seat 21. The adjustable mounting seat 31 then moves outward accordingly, and the worn scraper 33 moves outward and closer to the inner wall of the mixing tank 1, shortening the distance between them. This ensures that the scraper 33 effectively removes the material adhering to the inner wall of the mixing tank 1. The screw structure composed of the limiting adjustment screw 22 and the limiting adjustment nut 23 makes the lateral movement adjustment of the scraper 33 more precise.

[0049] In some embodiments, the top end of the mounting part 322 is horizontally connected to a cantilever 323, and the connecting stud 324 at the bottom end of the connecting post 321 is threadedly connected to the mounting hole 325 provided in the cantilever 323.

[0050] As the mixing tank 1 rotates, the material pushes against the scraper 33, and the cantilever 323 tightens and presses against the limiting step 326 at the top of the connecting stud 324. More specifically, as the mixing tank 1 rotates, the material contacts the scraper 33 and pushes it in the direction of material movement. The pushing force of the material is transmitted to the cantilever 323, pushing it in the direction of material movement. This causes the cantilever 323 to tend to move axially relative to the connecting stud 324, ultimately causing the cantilever 323 to fit tightly against the limiting step 326 at the top of the connecting stud 324. The limiting step 326 is located at the junction of the connecting stud 324 and the connecting column body, preventing the cantilever 323 from moving upward and preventing it from swinging, thus keeping it in its current position. This, in turn, keeps the scraper 33 in its current position, adhering to the inner wall of the mixing tank 1, effectively scraping away the material. By setting the thread direction of the connecting stud 324, the threaded connection between the cantilever 323 and the connecting stud 324 becomes more secure and stable under the pushing of the material, thus achieving the self-locking positioning of the scraper 33.

[0051] In some embodiments, the scraping unit 3 further includes a bottom scraper 34, which is horizontally arranged and has one end fixedly installed at the bottom end of the mounting part 322. The bottom scraper 34 is attached to the bottom surface of the mixing tank 1, thereby scraping off the material adhering to the bottom surface of the mixing tank 1 and improving the comprehensiveness of the scraping unit 3 in scraping off the material adhering to the inner wall of the mixing tank 1.

[0052] In some embodiments, the bottom scraper 34 forms an angle with the radial direction of the mixing tank 1. When the material rotates with the mixing tank 1, the direction of material movement is approximately perpendicular to the radial direction of the mixing tank 1. The bottom scraper 34 forms an angle with the radial direction, making it inclined relative to the radial direction. During the scraping process, the material flows radially inward along the bottom scraper 34, simultaneously achieving material scraping and diversion, allowing the material to fully participate in mixing and flow in multiple directions, thereby improving the mixing effect of the material.

[0053] In some embodiments, the bottom scraper 34 is arc-shaped. When the material rotates with the mixing tank 1, it rushes towards the concave side surface of the bottom scraper, and this side surface is aligned with the corresponding side surfaces of the mounting part 322 and the scraper 33 on the same arc.

[0054] The concave side surface of the bottom scraper 34, the corresponding side surface of the mounting part 322, and the side surface of the scraper 33 combine to form an arc-shaped guide surface. The material can flow more smoothly inward along this guide surface, improving the efficiency of radial flow of the material when the bottom scraper acts on the material and enhancing the mixing effect.

[0055] In some embodiments, the bottom of the lowest scraper 33 and the bottom of the mounting part 322 are both attached to the bottom surface of the mixing tank 1. The scraping assembly, which consists of the bottom scraper, the mounting part 322 and the scraper 33, has a horizontal length greater than the radius of the mixing tank 1, thereby ensuring that the scraping assembly can completely cover the bottom and inner surfaces of the mixing tank 1 and ensure the material scraping effect.

[0056] In some embodiments, the adjustable mounting base 31 is eccentrically positioned relative to the mixing tank 1, so that the adjustable mounting base 31 is closer to the side plate of the mixing tank 1, and the scraper 33 is more likely to approach the inner wall of the mixing tank 1, thus ensuring the scraping effect of the material.

[0057] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0058] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A mixer with an adjustable scraper arm, characterized in that, include: Organism; A mixing tank is installed on the machine body and rotates under the drive of a rotary drive motor installed on the machine body; The top cover is installed on the machine body and located above the mixing tank; The stirring unit has a stirring drive motor and a stirring device. The stirring drive motor is mounted on the top cover, and the stirring device is connected to the stirring drive motor and extends into the stirring tank. The stirring drive motor drives the stirring device to rotate, so as to stir the material in the stirring tank. A scraping unit is installed on the top cover and extends into the mixing tank; The scraping unit includes: An adjustable mounting base is installed on the upper surface of the top cover; The scraper arm is connected to the adjustable mounting base at its top and located inside the mixing tank at its bottom. A scraper is mounted on the scraper arm; The adjustable mounting base is fixed to the upper surface of the top cover by multiple positioning bolts. Each positioning bolt passes through a corresponding horizontal adjustment hole on the adjustable mounting base. The multiple horizontal adjustment holes are slotted holes and are parallel to each other. A connecting column is provided at the top of the scraper arm, and a clamping hoop is provided on the adjustable mounting base. The connecting column passes through the clamping hoop. When the clamping bolt installed on the opening on one side of the clamping hoop is tightened, the clamping hoop hugs the connecting column to fix the scraper arm to the adjustable mounting base. The scraper arm has a vertically arranged mounting part at its bottom, and multiple scrapers are continuously installed along the mounting part from top to bottom, with each scraper attached to the inner side wall of the mixing tank.

2. The mixer with adjustable scraper arm according to claim 1, characterized in that, The top cover is equipped with a limit adjustment seat, and the limit adjustment seat is equipped with a limit adjustment screw. The head of one end of the limit adjustment screw is located outside the limit adjustment seat, and the other end of the limit adjustment screw passes through the limit adjustment seat and is threadedly connected to the limit adjustment nut fixedly installed on the adjustable mounting base. The limit adjustment screw is parallel to the horizontal adjustment hole.

3. The mixer with adjustable scraper arm according to claim 1, characterized in that, The top of the mounting part is horizontally connected to a cantilever, and the connecting stud at the bottom of the connecting column is threadedly connected to the assembly hole of the cantilever. As the material pushes against the scraper as the mixing tank rotates, the cantilever tightens and presses against the limiting step provided at the top of the connecting stud.

4. The mixer with adjustable scraper arm according to claim 1, characterized in that, The scraping unit further includes a bottom scraper, which is horizontally arranged with one end fixedly installed at the bottom of the mounting part, and the bottom scraper is attached to the bottom surface of the mixing tank.

5. The mixer with adjustable scraper arm according to claim 4, characterized in that, The bottom scraper has an angle with the radial direction of the mixing tank.

6. The mixer with adjustable scraper arm according to claim 5, characterized in that, The bottom scraper is arc-shaped. When the material rotates with the mixing tank, it is pushed towards the concave side surface of the bottom scraper, and this side surface is aligned with the surface of the mounting part and the corresponding side of the scraper on the same arc.

7. The mixer with adjustable scraper arm according to any one of claims 4 to 6, characterized in that, The scraper at the lowest end and the bottom end of the mounting part are both attached to the bottom surface of the mixing tank. The scraping assembly composed of the bottom scraper, the mounting part and the scraper has a horizontal length greater than the radius of the mixing tank.

8. The mixer with adjustable scraper arm according to claim 1, characterized in that, The adjustable mounting base is eccentrically positioned relative to the mixing tank.

Images