Mixing device

Abstract

The utility model provides a mixing device which comprises a stock bin, a main stirring assembly and an auxiliary stirring assembly, an observation opening is formed in the side part of the stock bin, and a feeding opening is formed in the top of the stock bin; the main stirring assembly comprises a first stirring rotating shaft, a first stirring blade assembly and a first driving unit; the first stirring rotating shaft is erected on the stock bin and is sealed with the stock bin through a sealing structure; the first stirring blade assembly is located in the stock bin and fixedly arranged on the first stirring rotating shaft; the first driving unit is located outside the stock bin and is in transmission connection with one end of the first stirring rotating shaft; the rotation axis of the auxiliary stirring assembly is perpendicular to the rotation axis of the main stirring assembly, so that materials can flow in multiple dimensions, material agglomeration can be broken, sufficient contact and mixing of different materials are promoted, local accumulation of the materials is avoided, and the mixing uniformity is improved.

Description

Technical Field

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

[0002] In common mixing equipment, the mixing direction is usually along a fixed rotation axis. Due to inertia, the material cannot collide well with the mixing equipment, resulting in poor mixing effect and requiring long mixing time. At the same time, it is easy for the material to accumulate on the side wall, causing uneven mixing. Utility Model Content

[0003] To address the aforementioned technical problems, this application provides a mixing device, including a hopper, a main mixing assembly, and an auxiliary mixing assembly. The hopper has an observation port on its side and a feed inlet on its top. The main mixing assembly includes a first mixing shaft, a first mixing blade assembly, and a first drive unit. The first mixing shaft is mounted on the hopper and sealed to it via a sealing structure. The first mixing blade assembly is located inside the hopper and fixedly mounted on the first mixing shaft. The first drive unit is located outside the hopper and is drively connected to one end of the first mixing shaft. The auxiliary mixing assembly is located on the side opposite to the observation port, and the rotation axis of the auxiliary mixing assembly is perpendicular to the rotation axis of the main mixing assembly.

[0004] In some embodiments of this application, the auxiliary stirring assembly includes a second stirring shaft, a second stirring blade assembly, and a second drive unit; the second drive unit is disposed outside the hopper; the second stirring shaft is drively connected to the second drive unit and one end extends into the hopper; the second stirring blade assembly is disposed at one end of the second stirring shaft located inside the hopper.

[0005] In some embodiments of this application, the auxiliary stirring assembly is in multiple groups, and the multiple groups of auxiliary stirring assemblies are arranged at intervals along a direction parallel to the axis of the first stirring shaft.

[0006] In some embodiments of this application, the first stirring blade assembly includes a stirring arm, a first stirring blade, and a second stirring blade; the stirring arm is disposed on the circumferential surface of the first stirring shaft in a direction perpendicular to the axis of the first stirring shaft; there are multiple stirring arms, and the multiple stirring arms are arranged at intervals around the first stirring shaft; the first stirring blade is disposed at the end of the stirring arm; and the second stirring blade is disposed on the circumferential surface of the stirring arm.

[0007] In some embodiments of this application, the first stirring blade is inclined about the axis of the stirring arm. The first stirring blade includes a fixed base and a stirring plate. The fixed base is fixedly connected to the inclined end face of the stirring arm, and the stirring plate is disposed on the fixed base.

[0008] In some embodiments of this application, the first stirring blade includes a shovel part and a distributing part. The shovel part is fixedly disposed at the end of the stirring arm, and the distributing part is disposed on both sides of the shovel part. The shovel part and the distributing part enclose a shovel space with a pointed tip.

[0009] In some embodiments of this application, the second stirring blade assembly includes multiple sets of second stirring blades arranged at intervals along the second stirring shaft, and the second stirring blades have stirring portions disposed opposite to each other; the stirring portions of the multiple sets of second stirring blades have different lengths.

[0010] In some embodiments of this application, the sealing structure includes a bushing, a sealing seat, a sealing ring, packing, and a clamping seat; the first stirring shaft is a stepped shaft and includes sealing sections at both ends; the bushing is fixed to the outer circumferential surface of the sealing section of the first stirring shaft by fasteners; the sealing seat is sleeved on one end of the bushing away from the end of the first stirring shaft, and a sealing ring and packing are provided between the bushing and the sealing seat; the clamping seat is sleeved on one end of the bushing near the end of the first stirring shaft and is fixedly connected to the sealing seat by fasteners, and one end face of the clamping seat abuts against the packing.

[0011] In some embodiments of this application, the sealing structure further includes a plurality of packings arranged side by side and an oil guide ring disposed in the middle of the packings; a first oil guide groove is provided on the circumferential surface of the sealing seat, so that lubricating oil can be injected into the contact surface of the packings and the bushing through the first oil guide groove and the oil guide ring.

[0012] In some embodiments of this application, the observation port includes an observation port door panel and a cylinder; the lower part of the observation port door panel is hinged to the hopper; one end of the cylinder is hinged to the observation port door panel, and the other end is hinged to the frame supporting the hopper.

[0013] Compared with the prior art, the present invention has the following advantages and beneficial effects: The mixing device of the present application includes a main stirring assembly and an auxiliary stirring assembly, and the rotation axis of the auxiliary stirring assembly is perpendicular to the rotation axis of the main stirring assembly, which can realize the flow of materials in multiple dimensions, help to break up material agglomeration, promote full contact and mixing between different materials, avoid material accumulation in local areas, and improve the mixing uniformity.

[0014] It should be understood that the above general description and the following detailed description are merely exemplary and explanatory, and do not limit this document. Attached Figure Description

[0015] The accompanying drawings, which form part of this document, are used to provide a further understanding of the document. The illustrative embodiments and descriptions herein are used to explain the document and do not constitute an undue limitation thereof. In the drawings:

[0016] Figure 1 This is a front view of a mixing apparatus provided in an exemplary embodiment of this application;

[0017] Figure 2 This is a left view of a mixing apparatus provided in an exemplary embodiment of this application;

[0018] Figure 3 This is a top view of a mixing apparatus provided in an exemplary embodiment of this application;

[0019] Figure 4 This is a schematic diagram of the structure of a stirring assembly provided in an exemplary embodiment of this application;

[0020] Figure 5 This is a left view of the stirring assembly provided in an exemplary embodiment of this application;

[0021] Figure 6 This is a schematic diagram of the structure of a stirring assembly provided in an exemplary embodiment of this application;

[0022] Figure 7 This is a schematic diagram of the auxiliary stirring assembly provided in an exemplary embodiment of this application;

[0023] Figure 8 This is a cross-sectional view of a sealing structure provided in an exemplary embodiment of this application;

[0024] Figure 9 yes Figure 8 Enlarged view inside the middle circle.

[0025] In the picture:

[0026] 10. Main mixing assembly; 101. First mixing shaft; 102. Mixing arm; 103. First mixing blade; 1031. Fixed base; 1032. Mixing blade; 1033. Material shovel; 1034. Material distribution unit; 104. Second mixing blade; 20. Hopper; 30. Observation port; 40. Auxiliary mixing assembly; 401. Second drive unit; 402. Second mixing shaft; 403. Second mixing blade assembly; 50. Sealing structure; 502. Bushing; 503. Sealing seat; 504. Sealing ring; 505. Packing; 506. Pressing seat; 507. Oil guide ring; 508. First oil guide groove; 509. Pressure cap; 510. Second oil guide groove; 511. Retaining ring; 512. Skeleton seal; 513. End cap; 60. Feed inlet; 70. Sampler. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be arbitrarily combined with each other.

[0028] In common mixing equipment, the mixing direction is usually along a fixed rotation axis. Due to inertia, the material cannot collide well with the mixing equipment, resulting in poor mixing effect and requiring long mixing time. At the same time, it is easy for the material to accumulate on the side wall, causing uneven mixing.

[0029] Based on this, an exemplary embodiment of this application provides a mixing device, which includes a main stirring assembly and an auxiliary stirring assembly, wherein the rotation axis of the auxiliary stirring assembly is perpendicular to the rotation axis of the main stirring assembly, which can realize the flow of materials in multiple dimensions, help break up material agglomeration, promote full contact and mixing between different materials, avoid material accumulation in local areas, and improve mixing uniformity.

[0030] An exemplary embodiment of this application provides a mixing apparatus, such as... Figures 1 to 3 As shown, the mixing device includes a hopper 20, a main mixing assembly 10, and an auxiliary mixing assembly 40. An observation port 30 is provided on one side of the hopper 20. The observation port 30 includes an observation port door panel and a cylinder. The lower part of the observation port 30 door panel is hinged to the hopper 20. One end of the cylinder is hinged to the observation port door panel, and the other end is hinged to the frame supporting the hopper 20. This allows the opening of the observation port 30 to face upwards, and the observation port door panel can prevent operators from inserting their heads into the hopper 20, thus preventing injury to operators from the main mixing assembly 10. Figure 3 As shown, the top of the silo 20 is provided with a feed inlet, and the bottom is provided with a discharge outlet. The main mixing assembly 10 includes a first mixing shaft 101, a first mixing blade assembly, and a first drive unit; the first mixing shaft 101 is mounted on the silo 20 and sealed to the silo 20 by a sealing structure; the first mixing blade assembly is located inside the silo 20 and fixedly mounted on the first mixing shaft 101; the first drive unit is located outside the silo 20 and is drivenly connected to one end of the first mixing shaft 101; the auxiliary mixing assembly 40 is located on the side opposite to the observation port 30, and the rotation axis of the auxiliary mixing assembly 40 is perpendicular to the rotation axis of the main mixing assembly 10; in this way, the material can flow in multiple dimensions, which helps to break up material agglomeration, promotes full contact and mixing between different materials, avoids material accumulation in local areas, and improves the mixing uniformity.

[0031] like Figures 4 to 5 As shown, the first stirring blade assembly includes a stirring arm 102, a first stirring blade 103, and a second stirring blade 104. One end of the first stirring shaft 101 is connected to a first driving unit, so that the first driving unit can drive the first stirring shaft 101 to rotate, thereby driving the stirring arm 102 and the first stirring blade 103 to rotate. The stirring arm 102 is arranged on the circumferential surface of the first stirring shaft 101 in a direction perpendicular to the axis of the first stirring shaft 101. Preferably, there are multiple stirring arms 102, which are arranged at intervals around the first stirring shaft 101. For example, the main stirring assembly 10 includes eight stirring arms 102, the extension directions of which are all perpendicular to the axis of the first stirring shaft 101, and the extension directions of the eight stirring arms 102 are different. The first stirring blade 103 is disposed at the end of the stirring arm 102. In this way, the collision and shearing of materials are increased, dead corners in the stirrer are reduced, and the materials are ensured to be fully stirred in all corners of the container, thereby improving the stirring quality and stirring efficiency.

[0032] The first stirring blade 103 is inclined around the axis of the stirring arm 102; the first stirring blade 103 includes a fixed base 1031 and a stirring blade 1032, the fixed base 1031 is fixedly connected to the inclined end face of the stirring arm 102, and the stirring blade 1032 is fixedly mounted on the fixed base 1031 by fasteners. Figure 4 As shown, there are two sets of stirring blades 1032, with the center of the first stirring shaft 101 as the boundary. The two sets of stirring blades 1032 are arranged on both sides of the center of the first stirring shaft 101. Both sets of stirring blades 1032 are oriented towards the center of the first stirring shaft 101. The extension surface of the stirring blade 1032 is set at an angle to the axis of the first stirring shaft 101. The angle towards the center of the first stirring shaft 101 is an acute angle. In this way, the material can be pushed towards the center of the mixer, promoting the longitudinal flow of the material and improving the uniformity of the material mixing. At the same time, the discharge port is located in the middle of the mixer. During mixing, the material is gathered towards the middle of the mixer, which can facilitate the discharge.

[0033] like Figure 5 As shown, the second stirring blade 104 is disposed on the circumferential surface of the stirring arm 102. The second stirring blade 104 is perpendicular to the circumferential surface of the stirring arm 102 and inclined relative to the first stirring shaft 101. The extension surface of the second stirring blade 104 is perpendicular to the extension surface of the first stirring blade 103, which can increase the stirring space and ensure stirring at multiple angles and directions, thereby improving the mixing effect.

[0034] The second stirring blades 104 are not provided on the two stirring arms 102 near the end of the first stirring shaft 101, so as to prevent the material being stirred and mixed from being pushed to both ends of the stirrer.

[0035] In one embodiment, such as Figure 6 As shown, the first stirring blade 103 includes a shoveling section 1033 and a distributing section 1034. The shoveling section 1033 is fixedly disposed at the end of the stirring arm, and the distributing section 1034 is disposed on both sides of the shoveling section 1033. The shoveling section 1033 and the distributing section 1034 enclose a shoveling space with a pointed tip. During stirring, the distributing section 1034 can help disperse materials, accelerate material expansion, and reduce resistance during the stirring process. Preferably, the distributing section 1034 has a distributing surface that is concave towards the shoveling section 1033. The concave distributing surface helps to further reduce resistance during the stirring process. To prevent the first stirring blade 103 from interfering with the agitator's hopper 20, a portion of the first stirring blade is disposed on the stirring arm 102 near the end of the first stirring shaft 101. Preferably, half of the first stirring blade 103 is disposed on this part.

[0036] In an exemplary embodiment, such as Figure 7 As shown, the auxiliary mixing assembly 40 includes a second mixing shaft 402, a second mixing blade assembly 403, and a second drive unit 401. The second drive unit 401 is located outside the hopper 20. The second mixing shaft 402 is connected to the second drive unit 401 and one end extends into the hopper 20. The second mixing blade assembly 403 is located at one end of the second mixing shaft 402 inside the hopper 20. The second mixing blade assembly 403 includes multiple sets of second mixing blades arranged at intervals along the second mixing shaft 402. The second mixing blades have opposing mixing sections. The mixing sections of the multiple sets of second mixing blades have different lengths and different extension directions, so as to fully mix the materials and improve the uniformity of mixing.

[0037] The auxiliary stirring assembly 40 can be in multiple sets, and these sets are arranged at intervals along a direction parallel to the axis of the first stirring shaft 101. For example, the mixing device includes three sets of auxiliary stirring assemblies 40 to accelerate the flow of material on the side wall of the hopper 20 and improve mixing uniformity. Figure 3 As shown, a sampler is also provided on one side of the auxiliary mixing assembly 40. The sampler is used to take samples during the mixing process so as to observe the mixing status of the materials at any time.

[0038] Both ends of the first stirring shaft 101 are sealed to the hopper 20 via sealing structures to prevent material from entering the interior of the sealing structures. Figure 8 and 9 As shown, the sealing structure includes a bushing 502, a sealing seat 503, a sealing ring 504, a packing 505, and a clamping seat 506.

[0039] To ensure a tight fit between the bushing 502 and the first stirring shaft 101, the bushing 502 is fixed to the outer circumferential surface of the sealing section of the first stirring shaft 101 by fasteners. For example, a threaded hole perpendicular to the axial direction of the first stirring shaft 101 is provided on the circumferential surface of the bushing 502, and a set screw is installed in the threaded hole and presses against the outer circumferential surface of the first stirring shaft 101. A sealing seat 503 is fitted onto one end of the bushing 502 away from the end of the first stirring shaft 101. A sealing ring 504 and a packing 505 are provided between the bushing 502 and the sealing seat 503. For example, the sealing ring 504 is located near the middle section of the first stirring shaft 101, and the packing 505 is located away from the middle section of the first stirring shaft 101. In this way, multiple seals are formed between the bushing 502, the sealing ring 504, and the packing 505, improving the sealing effect and effectively preventing small particles from entering the sealing structure. This reduces wear and damage to the first stirring shaft 101 and extends the service life of the equipment.

[0040] Continue to refer to Figure 9 The clamping seat 506 is fitted onto one end of the bushing 502 near the end of the first stirring shaft 101 and is fixed to the sealing seat 503 by fasteners. One end face of the clamping seat 506 abuts against the packing 505. After a period of use, if the packing 505 wears, the distance between the clamping seat 506 and the sealing seat 503 can be adjusted to further clamp the packing 505. This allows the clamping seat 506 to compensate for wear after the packing 505 wears, ensuring a continuous seal. By adjusting the clamping seat 506 to clamp the packing 505, the service life of the packing 505 can be extended, frequent replacement of the packing 505 can be avoided, maintenance costs can be reduced, and the operational stability and production efficiency of the equipment can be improved.

[0041] For example, the sealing structure includes multiple packing glands 505 arranged side by side and an oil guide ring 507 disposed in the middle of the packing glands 505; a first oil guide groove 508 is provided on the circumferential surface of the sealing seat 503, the position of the first oil guide groove 508 is adapted to the position of the oil guide ring 507, an oil cup is installed in the first oil guide groove 508, and lubricating oil can be injected into the first oil guide groove 508 and the oil guide ring 507 through the oil cup. After the lubricating oil melts, it will enter between the packing gland 505 and the bushing 502, so that lubricating oil can be injected into the contact surface of the packing gland 505 and the bushing 502 through the first oil guide groove 508 and the oil guide ring 507, so as to reduce the friction between the packing gland 505 and the bushing 502 and reduce the wear of the packing gland 505. Specifically, the sealing structure includes a first packing 505, a second packing 505, a third packing 505, and a fourth packing 505, which are arranged sequentially along the axial direction of the first stirring shaft 101. The oil guide ring 507 is located in the middle of the packing 505, allowing the lubricating oil injected through the oil guide ring 507 to move towards both ends of the oil guide ring 507, so as to fully lubricate the packing 505 on both sides of the oil guide ring 507.

[0042] In one embodiment, in order to achieve a better sealing effect, the sealing structure further includes a pressure cap 509, which is sleeved on the bushing 502 and fastened to the other end face of the clamping seat 506. A sealing ring is also provided between the pressure cap 509 and the clamping seat 506. In this way, the pressure cap 509, the clamping seat 506 and the bushing 502 can be sealed to achieve a better sealing effect.

[0043] In one embodiment, a second oil guide groove 510 is provided on the circumferential surface of the clamping seat 506. An oil cup is installed in the second oil guide groove 510. Lubricating oil can be injected into the second oil guide groove 510 through the oil cup. The melted lubricating oil can enter between the clamping seat 506 and the bushing 502 to lubricate the contact surface of the bushing 502 and the clamping seat 506, reduce the side friction between them, and reduce the wear between them.

[0044] The sealing structure also includes a retaining ring 511 and a skeleton seal 512. The retaining ring 511 and the skeleton seal 512 are sequentially fitted onto the outer circumferential surface of the sealing seat 503. The skeleton seal 512 is fastened to the retaining ring 511 and the sealing seat 503 respectively by fasteners. The other end of the skeleton seal 512 is fitted onto the first stirring shaft 101, and a sealing ring is provided to achieve a seal between it and the first stirring shaft 101. At one end near the end face of the first stirring shaft 101, a bearing is also provided between the first stirring shaft 101 and the skeleton seal 512 to reduce friction between them. An end cap 513 is also provided on the end of the skeleton seal 512. The end cap 513 can seal the bearing and the end of the first stirring shaft 101, enhancing the sealing effect.

[0045] In this application, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising..." does not exclude the presence of other identical elements in the article or device that includes said element.

[0046] Although preferred embodiments of this application have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments as well as all changes and modifications falling within the scope of this application.

[0047] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if these modifications and variations fall within the scope of the claims of this application and their equivalents, the intent of this application also includes these modifications and variations.

Claims

1. A mixing device, characterized in that, The system includes a hopper, a main mixing assembly, and an auxiliary mixing assembly. The hopper has an observation port on its side and a feed inlet on its top. The main mixing assembly includes a first mixing shaft, a first mixing blade assembly, and a first drive unit. The first mixing shaft is mounted on the hopper and sealed to it via a sealing structure. The first mixing blade assembly is located inside the hopper and fixedly mounted on the first mixing shaft. The first drive unit is located outside the hopper and is connected to one end of the first mixing shaft. The auxiliary mixing assembly is located on the side opposite the observation port, and its rotation axis is perpendicular to the rotation axis of the main mixing assembly.

2. The mixing device according to claim 1, characterized in that, The auxiliary stirring assembly includes a second stirring shaft, a second stirring blade assembly, and a second drive unit; the second drive unit is located outside the hopper; the second stirring shaft is connected to the second drive unit and one end extends into the hopper; the second stirring blade assembly is located at one end of the second stirring shaft inside the hopper.

3. The mixing device according to claim 1, characterized in that, The auxiliary stirring assembly is composed of multiple groups, and the multiple groups of auxiliary stirring assemblies are arranged at intervals along a direction parallel to the axis of the first stirring shaft.

4. The mixing device according to claim 1, characterized in that, The first stirring blade assembly includes a stirring arm, a first stirring blade, and a second stirring blade; the stirring arm is disposed on the circumferential surface of the first stirring shaft in a direction perpendicular to the axis of the first stirring shaft; there are multiple stirring arms, which are arranged at intervals around the first stirring shaft; the first stirring blade is disposed at the end of the stirring arm; and the second stirring blade is disposed on the circumferential surface of the stirring arm.

5. The mixing device according to claim 4, characterized in that, The first stirring blade is inclined around the axis of the stirring arm. The first stirring blade includes a fixed base and a stirring blade. The fixed base is fixedly connected to the inclined end face of the stirring arm, and the stirring blade is disposed on the fixed base.

6. The mixing device according to claim 4, characterized in that, The first stirring blade includes a shovel part and a distributing part. The shovel part is fixedly disposed at the end of the stirring arm, and the distributing part is disposed on both sides of the shovel part. The shovel part and the distributing part enclose a shovel space with a pointed tip.

7. The mixing device according to claim 2, characterized in that, The second stirring blade assembly includes multiple sets of second stirring blades arranged at intervals along the second stirring shaft, and the second stirring blades have opposing stirring sections; the stirring sections of the multiple sets of second stirring blades have different lengths.

8. The mixing device according to claim 1, characterized in that, The sealing structure includes a bushing, a sealing seat, a sealing ring, packing, and a clamping seat; the first stirring shaft is a stepped shaft and includes sealing sections at both ends; the bushing is fixed to the outer circumferential surface of the sealing section of the first stirring shaft by fasteners; the sealing seat is sleeved on one end of the bushing away from the end of the first stirring shaft, and a sealing ring and packing are provided between the bushing and the sealing seat; the clamping seat is sleeved on one end of the bushing near the end of the first stirring shaft and is fixed to the sealing seat by fasteners, and one end face of the clamping seat abuts against the packing.

9. The mixing device according to claim 8, characterized in that, The sealing structure also includes multiple packings arranged side by side and an oil guide ring disposed in the middle of the packings; a first oil guide groove is provided on the circumferential surface of the sealing seat, so that lubricating oil can be injected into the contact surface of the packings and the bushing through the first oil guide groove and the oil guide ring.

10. The mixing device according to claim 1, characterized in that, The observation port includes an observation port panel and a cylinder; the lower part of the observation port panel is hinged to the hopper; one end of the cylinder is hinged to the observation port panel, and the other end is hinged to the frame supporting the hopper.

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