Stirring paddle and mixing machine

Abstract

The utility model provides a stirring paddle and a mixing machine, and relates to the technical field of mixing equipment. The stirring paddle comprises a main shaft and paddles, wherein the main shaft is provided with a first channel; the paddle is mounted on the main shaft and is provided with a second channel; and the second channel communicates with the first channel to form a cooling flow channel, and the cooling flow channel is configured to be capable of circulating a first cooling medium. According to the stirring paddle provided by the utility model, the first cooling medium can be introduced into the cooling flow channel formed by the first channel and the second channel, so that the surfaces of the main shaft and the paddle can be in contact with materials, the first cooling medium in the cooling flow channel can exchange heat with the materials, the heat dissipation area is greatly increased, heat dissipation dead angles are eliminated, and the service life of the stirring paddle is prolonged. Therefore, the temperature of the materials is reduced, and efficient cooling of the materials is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of mixing equipment, in particular to a stirring paddle and a mixer. Background Art

[0002] During the production of lithium battery materials, the material temperature in the spiral ribbon mixing equipment is often around 180°C. The material temperature needs to be quickly lowered so that it can be transported to the next process. At present, the cooling gas is passed into the equipment for displacement cooling. However, since the cooling gas only contacts the surface of part of the material, the heat dissipation area is small, resulting in poor heat dissipation effect. Utility Model Content

[0003] In view of this, the purpose of the utility model is to overcome the deficiencies in the prior art and provide a stirring paddle that can increase the heat dissipation area of ​​the material and improve the heat dissipation effect;

[0004] In addition, a mixer using the stirring blade is provided.

[0005] The utility model provides the following technical solutions:

[0006] According to a first aspect of the present utility model, a stirring paddle is provided, the stirring paddle comprising:

[0007] a main shaft having a first passage;

[0008] A blade is mounted on the main shaft, and the blade has a second channel; wherein the second channel is connected to the first channel to form a cooling channel, and the cooling channel is configured to be able to flow a first cooling medium.

[0009] Furthermore, the first channel and the second channel are connected in series.

[0010] Further, the blade comprises:

[0011] A pair of spiral blades, wherein the spiral blades have a cylindrical spiral line, and the spiral blades have a channel, and the channel is extended along the cylindrical spiral line;

[0012] Wherein, the first channel has a liquid inlet section and a liquid discharge section, the channels of a pair of the spiral blades are connected in series to form the second channel, and one end of the second channel is connected to the liquid inlet section, and the other end of the second channel is connected to the liquid discharge section, and the liquid inlet section is configured to enable at least part of the first cooling medium to flow into the second channel.

[0013] Further, the first channel is provided with a partition, and the partition is configured to be able to divide the first channel into the liquid inlet section and the liquid discharge section in the axial direction thereof;

[0014] Wherein, the first channel and the main shaft are coaxially arranged.

[0015] Furthermore, a rotary joint is installed at the end of the liquid inlet section, and the rotary joint is connected to an infusion pipeline, and the infusion pipeline can transport the first cooling medium to the liquid inlet section.

[0016] Furthermore, a pair of spiral blades are arranged in parallel and at an interval.

[0017] Further, the blade also includes:

[0018] A plurality of transfer tubes are provided, a pair of the channels are connected by the plurality of transfer tubes, and the plurality of transfer tubes are arranged in parallel.

[0019] According to a second aspect of the present utility model, a mixer is provided, comprising:

[0020] A stirring paddle as described in any one of the items.

[0021] Furthermore, the mixer further comprises:

[0022] The shell has a stirring chamber, and the stirring paddle is rotatably mounted in the stirring chamber; wherein the shell is provided with an interlayer cooling chamber, and the interlayer cooling chamber is configured to be able to flow a second cooling medium.

[0023] Furthermore, the first cooling medium and the second cooling medium are the same; the mixer further comprises:

[0024] A radiator, wherein the radiator can be in communication with the interlayer cooling cavity and / or the cooling channel, and the radiator can adjust the temperature of the second cooling medium.

[0025] The embodiments of the present utility model have the following advantages:

[0026] By adopting the stirring paddle provided by the utility model, the first cooling medium is passed into the cooling channel composed of the first channel and the second channel, and then can contact the material through the surface of the main shaft and the paddle, so that the first cooling medium in the cooling channel can exchange heat with the material, greatly improving the heat dissipation area, eliminating heat dissipation dead corners, thereby reducing the temperature of the material and achieving efficient cooling of the material.

[0027] In addition, the utility model also relates to a mixer. Since the above-mentioned stirring paddle has the above-mentioned technical effects, the mixer including the stirring paddle should have the same technical effects, which will not be described in detail here.

[0028] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0030] Figure 1 The figure shows the assembly schematic diagram of the stirring shaft and the housing provided by the embodiment of the utility model;

[0031] Figure 2 The internal structure diagram of the mixer provided by the embodiment of the utility model is shown;

[0032] Figure 3 Shows Figure 2 AA section view in.

[0033] Description of main component symbols:

[0034] 100-shell; 200-stirring shaft; 210-paddle; 211-second channel; 220-main shaft; 221-first channel; 2211-liquid discharge section; 2212-liquid inlet section; 222-partition; 223-supporting part; 300-rotating joint; 400-transfer tube. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] It should be noted that when an element is referred to as being "fixed to" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. In contrast, when an element is referred to as being "directly on" another element, there is no intermediate element. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0037] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0038] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0039] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used in the specification of the template herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0040] In the related art, the cooling of the ribbon mixer is mostly done by internal replacement of clean cooling gas, and the high-temperature gas is discharged through the furnace top fan;

[0041] During the production of lithium battery materials, the material temperature in the spiral ribbon mixing equipment is often around 180°C. The material temperature needs to be quickly lowered so that it can be transported to the next process. At present, the temperature is cooled by ventilating the inside of the equipment. Since the cooling gas only contacts the surface of the material, the heat dissipation area is small, and the inside of the material with the highest heat accumulation is not in contact with the cold source, and the heat cannot be taken away in time, so the heat dissipation effect is not very ideal.

[0042] like Figure 1 and Figure 2 As shown, in order to solve the above technical problems, according to the first aspect of the utility model, a stirring paddle is provided, the stirring paddle includes a main shaft 220 and a paddle 210, and the main shaft 220 has a first channel 221;

[0043] The blade 210 is mounted on the main shaft 220 , and the blade 210 has a second channel 211 ; wherein the second channel 211 is connected to the first channel 221 to form a cooling channel, and the cooling channel is configured to be able to flow a first cooling medium.

[0044] Obviously, after the first cooling medium is introduced into the cooling channel, the first cooling medium flows in the first channel 221 and the second channel 211, so that the first cooling medium can contact the material as the blade 210 rotates during the flow, so that it can fully contact the material. Of course, due to the working nature of the stirring paddle, when working, the driving motor drives the main shaft 220 to rotate, and then drives the blade 210 to rotate synchronously, so as to achieve stirring and breaking up the material while contacting the material for cooling.

[0045] It is easy to understand that, as a well-known technology in the art, a stirring paddle is installed in the housing 100 so that the materials in the housing 100 can be stirred by driving the stirring paddle.

[0046] For example, the first cooling medium may be cooling water, cooling oil, cooling gas, etc., which are not specifically limited here, as long as they can achieve contact with the material and exchange heat. It should be noted that by connecting the circulating constant temperature first cooling medium inside the main shaft 220 and the blades 210, the main shaft 220 and the blades 210 can continue to maintain a low temperature without being affected by the season, so as to replace the first cooling medium with naturally cooled room temperature air or room temperature water, so as to avoid the water temperature rising with the temperature rising in summer, and the time to cool down to the specified temperature will also be prolonged accordingly.

[0047] Obviously, it is necessary to keep the temperature of the first cooling medium lower than the temperature of the material to ensure a certain temperature difference between the two. It should be noted that the temperature difference between the first cooling medium and the material should not be too large or too small. If the temperature difference between the first cooling medium and the material is too large, and the main shaft 220 and the blades 210 are mostly made of metal, the main shaft 220 and the blades 210 will be subject to a large temperature difference between hot and cold, which will affect their service life; and maintaining a sufficiently large temperature difference will cause excessive energy consumption, and will not significantly improve the efficiency of lowering the material temperature; if the temperature difference between the first cooling medium and the material is too small, it will affect the efficiency of lowering the temperature, and the equipment will need to run for a long time.

[0048] For example, the main shaft 220 and the blade 210 can be machined to obtain the first channel 221 and the second channel 211, respectively. Alternatively, the main shaft 220 and the first channel 221 therein, as well as the blade 210 and the second channel 211, can be obtained by die casting.

[0049] By using the stirring paddle provided by the utility model, the first cooling medium is passed into the cooling channel formed by the first channel 221 and the second channel 211, and then can contact the material through the surface of the main shaft 220 and the paddle 210, so that the first cooling medium in the cooling channel can exchange heat with the material, thereby reducing the temperature of the material and achieving efficient cooling of the material.

[0050] like Figure 2As shown, on the basis of the above embodiment, the first channel 221 and the second channel 211 are arranged in series. That is, the first cooling medium flows through the first channel 221 and the second channel 211 in sequence, thereby keeping the first cooling medium in the first channel 221 and the second channel 211 in a flowing state. It can be understood that in this state, heat dissipation can be better.

[0051] Of course, in other embodiments, it is also possible to only need to keep the first cooling medium in the first channel 221 or the second channel 211 in a flowing state. For example, the first cooling medium enters from one end of the first channel 221 and is discharged from the other end, and the second channel 211 is only connected to the first channel 221 at one end. In this case, the temperature of the first cooling medium in the second channel 211 is higher than the first cooling medium in the first channel 221. Under the effect of the temperature difference, the first cooling medium in the first channel 221 can still enter the second channel 211, and the first cooling medium in the second channel 211 can flow back into the first channel 221.

[0052] like Figure 1 and Figure 2 As shown, on the basis of the above embodiment, the blade 210 includes a pair of spiral blades, the spiral blades have a cylindrical spiral line, the spiral blades have a channel, and the channel is extended along the cylindrical spiral line; wherein, the first channel 221 has a liquid inlet section 2212 and a liquid discharge section 2211, the channels of the pair of spiral blades are connected in series to form a second channel 211, and one end of the second channel 211 is connected to the liquid inlet section 2212, and the other end of the second channel 211 is connected to the liquid discharge section 2211, and the liquid inlet section 2212 is configured to enable at least part of the cooling medium to flow into the second channel 211.

[0053] The spiral blades are extended along the cylindrical spiral line, and the cylindrical spiral line is coaxially arranged with the main shaft 220. The liquid inlet section 2212 of the first channel 221 is used to receive the first cooling medium, and the liquid discharge section 2211 is used to discharge the first cooling medium in the first channel 221 and the second channel 211 to form a flow of the first cooling medium.

[0054] Exemplarily, a portion of the first cooling medium that enters the liquid inlet section 2212 directly flows into the liquid discharge section 2211 , and another portion enters the second channel 211 and then flows into the liquid discharge section 2211 .

[0055] Alternatively, in other embodiments, the first cooling medium entering the liquid inlet section 2212 does not flow directly into the liquid discharge section 2211 , but all flows into the second channel 211 before flowing into the liquid discharge section 2211 .

[0056] In this embodiment, there is a pair of channels, which are connected in series to extend the length of the second channel 211 and cooperate with the first channel 221 to achieve unidirectional flow.

[0057] On the basis of the above embodiment, the first channel 221 is provided with a partition 222, and the partition 222 is configured to be able to separate the first channel 221 into a liquid inlet section 2212 and a liquid discharge section 2211 in its axial direction;

[0058] For example, the main shaft 220 is a DN200 main shaft 220 , and the interior of the DN200 main shaft 220 is hollow to form a first channel 221 . The blade 210 is a DN250 stainless steel pipe, and the inner hole of the DN250 stainless steel pipe forms a second channel 211 .

[0059] On this basis, fins can be provided on the outer wall of the DN250 stainless steel pipe, which can improve the stirring efficiency and increase the heat dissipation contact area. To ensure the connection strength between the DN250 stainless steel pipe and the main shaft 220, the blade 210 is also connected to the main shaft 220 through a support portion 223, and the support portion 223 includes but is not limited to angle steel, channel steel, I-beam, etc.

[0060] In addition, the wall thickness of the hollow main shaft 220 is selected according to the actual use situation, and the internal space is enlarged as much as possible when the rigidity and deflection meet the use requirements, thereby increasing the flow of chilled water. Also, the size and wall thickness of the blade 210 are selected according to the actual situation and are not bent or deformed.

[0061] For example, Figure 2 As shown, the partition 222 includes a partition, which is arranged in the first channel 221 to divide the first channel 221 into a liquid inlet section 2212 and a liquid discharge section 2211 in its extension direction. Specifically, the partition is sealed and fixed in the first channel 221 by welding, wherein the welding position of the partition can be set at the end of the liquid discharge section 2211, thereby facilitating welding and fixing.

[0062] like Figure 2 As shown, based on the above embodiment, the first channel 221 is coaxially arranged with the main shaft 220. Obviously, the first channel 221 is extended along the axis of the main shaft 220, that is, the first cooling medium enters from one end of the main shaft 220 and is discharged from the other end of the main shaft 220.

[0063] This structural arrangement can facilitate installation of the rotary joints 300 at both ends of the main shaft 220, so as to ensure that the first cooling medium can enter and exit the main shaft 220 while rotating.

[0064] For example, the rotary joint 300 is installed on both sides of the main shaft 220, and is connected by thread. Of course, it can also be fixed by welding, which is not specifically limited here.

[0065] like Figure 1 and Figure 2As shown, on the basis of the above embodiment, a rotary joint 300 is installed at the end of the liquid inlet section 2212, and the rotary joint 300 is connected to an infusion pipeline, which can transport the first cooling medium to the liquid inlet section 2212.

[0066] In other words, the rotating joint 300 can cooperate with the main shaft 220 to ensure that the main shaft 220 can rotate normally and keep the first cooling medium flowing into the first channel 221 during the rotation of the main shaft 220.

[0067] Exemplarily, the infusion pipeline includes a tank body storing the first cooling medium, the tank body is connected to the rotary joint 300 through a suction pump, and the tank body is connected to a refrigerator.

[0068] like Figure 1 and Figure 2 As shown, based on the above embodiment, a pair of spiral blades are arranged in parallel with each other.

[0069] By arranging a pair of spiral blades in parallel, the length of the second channel 211 can be increased, which is conducive to sufficient heat exchange of the material. Of course, arranging a pair of spiral blades in parallel can also avoid position interference when the two spiral blades are installed.

[0070] like Figure 2 and Figure 3 As shown, based on the above embodiment, the blade 210 further includes a plurality of transfer tubes 400 , a pair of channels are connected by the plurality of transfer tubes 400 , and the plurality of transfer tubes 400 are arranged in parallel.

[0071] Exemplarily, the blade 210 includes two transfer tubes 400, and the two transfer tubes 400 connect a pair of channels at the same time, that is, a pair of channels can be connected through any transfer tube 400, and the connection between the two transfer tubes 400 and the same channel is located at the same position, so that the first cooling medium in one channel can form a turbulent flow when entering another channel from the transfer tube 400, flushing the inner wall of the channel, blocking the boundary layer, and helping to improve the heat dissipation efficiency.

[0072] like Figure 1 and 2 As shown, according to the second aspect of the present utility model, a mixer is provided, which includes a stirring paddle.

[0073] Since the above-mentioned stirring paddle has the above-mentioned technical effects, the mixer including the stirring paddle should have the same technical effects, which will not be described in detail here.

[0074] On the basis of the above embodiment, the mixer further comprises a shell 100, the shell 100 has a stirring chamber, and a stirring paddle is rotatably installed in the stirring chamber; wherein the shell 100 is provided with an interlayer cooling chamber, and the interlayer cooling chamber is configured to be able to flow a second cooling medium.

[0075] Exemplarily, the housing 100 is configured as a double-layer structure, that is, the housing 100 includes an inner wall and an outer wall, and there is a gap between the inner wall and the outer wall, and the gap forms the above-mentioned interlayer inner cooling cavity. Specifically, a water outlet is provided at the upper end of the interlayer inner cavity, and a water inlet is provided at the lower end to form a flow channel, so that the second cooling medium is passed from the water inlet into the interlayer cooling cavity to exchange heat with the material, and the heated second cooling medium is discharged from the water outlet.

[0076] It should be noted that the water inlet is arranged below the water outlet, which can slow down the flow rate of the second cooling medium in the cooling cavity of the interlayer, and can form turbulence in the cooling cavity of the interlayer, reduce flow dead corners, and thus help improve heat dissipation efficiency.

[0077] For example, both ends of the stirring shaft 200 are mounted on the housing 100 through bearing seats, and the housing 100 is configured to be cylindrical.

[0078] On the basis of the above-mentioned embodiment, the side wall of the housing 100 is provided with an observation window for opening the equipment for internal inspection during the production interval.

[0079] like Figure 2 As shown, based on the above embodiment, both ends of the main shaft 220 extend out of the housing 100, and one end of the main shaft 220 is connected to a driving motor through a transmission mechanism, and the driving motor is used to drive the main shaft 220 to rotate.

[0080] It should be noted that the axis of the driving motor is parallel to the axis of the main shaft 220 , but not coaxial, so as to avoid interference in the installation of the rotary joint 300 .

[0081] On the basis of the above-mentioned embodiment, the shell 100 has an air inlet and an exhaust port, so that the cooling gas is introduced into the shell 100 from the air inlet to contact with the material in the shell 100 for heat exchange and then discharged from the exhaust port.

[0082] Obviously, the heat dissipation efficiency can be further improved by adding cooling gas in combination with the first cooling medium and the second cooling medium.

[0083] Of course, an air filter is provided at the exhaust port to filter the exhausted gas to remove harmful gas components and particles and reduce pollution to the external environment.

[0084] For example, the air filter may be a bag filter, a cyclone separator, a high efficiency filter, a medium efficiency filter, etc., which are not specifically limited here.

[0085] On the basis of the above embodiment, the first cooling medium and the second cooling medium are the same; the mixer also includes a radiator, which can be connected to the interlayer cooling cavity and / or the cooling channel, and the radiator can adjust the temperature of the second cooling medium.

[0086] When the first cooling medium and the second cooling medium are both cooling water, the radiator is a water-cooled radiator. Specifically, the radiator has a water inlet and a water outlet. The radiator can dissipate heat from the cooling water flowing in from the water inlet to reduce the temperature, and discharge the cooling water after dissipation from the water outlet.

[0087] Exemplarily, the water inlet is connected to the end of the cooling channel and the outlet of the interlayer cooling cavity respectively, and the water outlet is connected to the beginning of the cooling channel and the inlet of the interlayer cooling cavity respectively, so that the cooling channel and the radiator form a circulation loop, and the interlayer cooling cavity and the radiator form a circulation loop.

[0088] It should be noted that, since the stirring paddle is in a rotating state, the end and the beginning of the cooling channel are respectively formed at the two ends of the main shaft 220, and the end and the beginning are both coaxially arranged with the main shaft 220; thus, the two ends of the main shaft 220 are respectively connected to the water inlet and the water outlet by the rotating joints 300.

[0089] Of course, in other embodiments, the first cooling medium and the second cooling medium may be of different types. On this basis, the first cooling medium and the second cooling medium cannot share a radiator.

[0090] Exemplarily, the first cooling medium is cooling oil, and the second cooling medium is cooling water; or, the first cooling medium is cooling water, and the second cooling medium is cooling oil.

[0091] In all examples shown and described herein, any specific values ​​should be interpreted as merely exemplary and not as limiting, and thus other examples of the exemplary embodiments may have different values.

[0092] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0093] The above-mentioned embodiments only express several implementation methods of the present invention, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the present invention. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A stirring paddle, characterized in that: The stirring paddle comprises: a main shaft having a first passage; a blade, the blade being mounted on the main shaft, the blade having a second channel; The second channel is connected to the first channel to form a cooling channel, and the cooling channel is configured to flow a first cooling medium; The first channel is provided with a partition, and the partition is configured to be able to divide the first channel into a liquid inlet section and a liquid discharge section in its axial direction, one end of the second channel is connected to the liquid inlet section, and the other end of the second channel is connected to the liquid discharge section; wherein, the first channel and the main axis are coaxially arranged.

2. The stirring paddle according to claim 1, characterized in that: The first channel and the second channel are connected in series.

3. The stirring paddle according to claim 2, characterized in that: The blade comprises: A pair of spiral blades, wherein the spiral blades have a cylindrical spiral line, and the spiral blades have a channel, and the channel is extended along the cylindrical spiral line; The first channel has a liquid inlet section and a liquid outlet section, the holes of a pair of spiral blades are connected in series to form the second channel, and the liquid inlet section is configured to allow at least part of the first cooling medium to flow into the second channel.

4. The stirring paddle according to claim 3, characterized in that: A rotating joint is installed at the end of the liquid inlet section, and the rotating joint is connected to an infusion pipeline, and the infusion pipeline can transport the first cooling medium to the liquid inlet section.

5. The stirring paddle according to claim 3, characterized in that: A pair of spiral blades are arranged in parallel and at an interval.

6. The stirring paddle according to claim 3, characterized in that: The blade also includes: A plurality of transfer tubes are provided, a pair of the channels are connected by the plurality of transfer tubes, and the plurality of transfer tubes are arranged in parallel.

7. A mixer, characterized in that: The mixer comprises the stirring blade according to any one of claims 1 to 6.

8. The mixer according to claim 7, characterized in that The mixer also includes: The shell has a stirring chamber, and the stirring paddle is rotatably mounted in the stirring chamber; wherein the shell is provided with an interlayer cooling chamber, and the interlayer cooling chamber is configured to be able to flow a second cooling medium.

9. The mixer according to claim 8, characterized in that The first cooling medium and the second cooling medium are the same; the mixer further comprises: A radiator, wherein the radiator can be in communication with the interlayer cooling cavity and / or the cooling channel, and the radiator can adjust the temperature of the second cooling medium.

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