Electromagnetic heating temperature control drying machine

Abstract

The utility model relates to an electromagnetic heating temperature control drying machine, and relates to the field of powder stirring, drying and mixing. A multi-piece stirring paddle is arranged in a container barrel body, a magnetic guide sleeve is arranged on the periphery of the container barrel body, an electromagnetic heating coil is wound on one side, far away from the container barrel body, of the magnetic guide sleeve, a temperature sensor is further arranged, and the temperature sensor is fixed to the magnetic guide sleeve and the container barrel body through a mounting base and used for monitoring the temperature of materials in the container barrel body; wherein a water channel is arranged between the container barrel body and the magnetic guide sleeve, circulating water flows in the water channel, and the electromagnetic heating coil and the temperature sensor are both electrically connected with the control box. Under the condition, the electromagnetic heating is long in service life, safe and reliable, the electromagnetic heating coil does not generate heat, and the maintenance cost is extremely low; moreover, the mode is efficient, energy-saving and accurate in temperature control, an internal heating mode is adopted, internal components in the heating body generate heat due to electromagnetic induction and an eddy current effect, the hot start is very fast, and the product drying effect is good.

Description

TECHNICAL FIELD

[0001] The utility model relates to powder stirring drying mixing technical field, especially in kind of electromagnetic heating temperature control drying machine. BACKGROUND

[0002] The current market commonly used drying machine heating mode includes circulating hot water, steam and hot oil. These traditional heating methods are widely used, but there are obvious shortcomings. First, the heat loss is big, because the heat transfer efficiency is not high, a large amount of heat is lost in the transmission process, leading to energy waste and operation cost increase. Secondly, it is easy to be affected by the environment, the temperature fluctuation is big, it is difficult to maintain stable heating effect, especially in the case of large external temperature change, this influence is more remarkable. These factors not only reduce the drying efficiency, but also affect the quality and yield of products.

[0003] Compared with the above, electromagnetic heating as a new heating method, although it has the advantages of fast heating speed, low energy consumption, but also has some obvious shortcomings. In the process of electromagnetic heating, temperature control is difficult, and uneven heating is easy to occur, which leads to local temperature too high. This not only may cause material to burn, but also may cause local caking, which seriously affects the quality and uniformity of powder product. Therefore, developing a new drying machine heating method which can effectively solve these problems has become a technical problem to be solved at present. SUMMARY

[0004] The utility model aims at providing a kind of electromagnetic heating temperature control drying machine to solve the problems existing in the prior art.

[0005] To achieve the above object, the utility model adopts the technical scheme that:

[0006] A kind of electromagnetic heating temperature control drying machine, including rack, the electromagnetic heating temperature control drying machine further include container and control box installed on the rack, and multiple-piece stirring paddle located in the container interior, the container includes:

[0007] Container barrel, the multiple-piece stirring paddle is located in the container barrel;

[0008] Magnetic guide sleeve, it is located at the outer periphery of the container barrel, and electromagnetic heating coil is wound on the side away from the container barrel;And

[0009] Temperature sensor, it is fixed with the magnetic guide sleeve and the container barrel by mounting seat, for monitoring the material temperature in the container barrel interior;

[0010] Wherein, the container barrel and the magnetic guide sleeve between water channel passageway, circulating water flows in the water channel passageway, the electromagnetic heating coil and the temperature sensor are electrically connected with the control box.

[0011] In a possible implementation, the container further comprises:

[0012] A heat preservation sleeve is fixed to the inner side of the mounting seat through a flange and wraps the outer periphery of the temperature sensor.

[0013] In a possible implementation, the container further comprises:

[0014] A plurality of flow guides are distributed in the water channel at intervals, and the plurality of flow guides are connected to the container barrel.

[0015] In a possible implementation, the container further comprises:

[0016] A heat preservation rock wool wraps the outer periphery of the electromagnetic heating coil.

[0017] In a possible implementation, the electromagnetic heating coil is wound on the magnetic guide sleeve layer by layer, and the winding direction of the electromagnetic heating coil is opposite to the stirring direction of the multi-piece stirring paddle.

[0018] In a possible implementation, the multi-piece stirring paddle comprises:

[0019] A stirring spindle is rotatably connected in the container barrel;

[0020] A plurality of amplitude rods are connected to the stirring spindle in a staggered manner with the length increasing from bottom to top; and

[0021] A plurality of paddle blades are connected to one end of the plurality of amplitude rods away from the stirring spindle.

[0022] The gap between the plurality of paddle blades and the inner wall of the container barrel is uniform.

[0023] In a possible implementation, the top of the container barrel is covered with a vacuum cover.

[0024] In a possible implementation, the electromagnetic heating temperature control dryer further comprises:

[0025] A driving motor is installed on the vacuum cover, the stirring spindle is drivingly connected to the power output end of the driving motor through a coupling, and the driving motor is electrically connected to the control box.

[0026] The technical scheme provided by the utility model has at least the following beneficial effects:

[0027] By setting multiple pieces of stirring paddles in the container barrel, setting a magnetic guide sleeve on the outer periphery of the container barrel, winding an electromagnetic heating coil on the side of the magnetic guide sleeve away from the container barrel, and setting a temperature sensor fixed with the magnetic guide sleeve and the container barrel through a mounting seat for monitoring the material temperature inside the container barrel, wherein the container barrel and the magnetic guide sleeve have a water channel, circulating water flows in the water channel, and the electromagnetic heating coil and the temperature sensor are electrically connected with the control box. In this case, the electromagnetic heating has long service life, is safe and reliable, the electromagnetic heating coil itself does not generate heat, the maintenance cost is extremely low, the electromagnetic heating coil generates eddy current heating through alternating magnetic field, the surface temperature of the electromagnetic heating coil itself is slightly higher than room temperature, and heat is fully utilized. Moreover, the method is high in energy saving and accurate in temperature control, adopts internal heating, the molecules in the heating body generate heat due to eddy current effect caused by electromagnetic induction, heat starts very quickly, the average preheating time is shortened by more than 60% than the resistance coil heating method, the thermal efficiency is more than 90%, and the product drying effect is good. BRIEF DESCRIPTION OF DRAWINGS

[0028] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application.

[0029] Figure 1 A structure schematic view of the electromagnetic heating temperature control drying machine is shown.

[0030] Figure 2 A structure schematic view of the electromagnetic heating temperature control drying machine is shown. Figure 1 A local enlarged schematic view of A of the electromagnetic heating temperature control drying machine is shown.

[0031] Figure 3 A structure schematic view of the multiple pieces of stirring paddles of the electromagnetic heating temperature control drying machine is shown.

[0032] In the drawing:

[0033] 10, rack; 20, container; 30, multiple pieces of stirring paddles; 40, vacuum cover; 50, driving motor; 60, control box;

[0034] 21, container barrel; 22, magnetic guide sleeve; 23, flow guide plate; 24, electromagnetic heating coil; 25, heat preservation rock wool; 26, mounting seat; 27, heat preservation sleeve; 28, temperature sensor; 29, flange;

[0035] 31, shaft coupling; 32, stirring main shaft; 33, width rod; 34, paddle. DETAILED DESCRIPTION

[0036] Clearly, the described embodiments are merely a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments of the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0037] It should be noted that the terms "front", "back", "left", "right", "upper" and "lower" used in the following description refer to the directions in the drawings of the present application, and the terms "bottom surface" and "top surface", "inner" and "outer" refer to the directions towards or away from a specific part. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more.

[0038] First, the purpose of the present application is to design an electromagnetic heating structure, which cooperates with the axial stirring paddle to solve the problem of large heat loss in the heating process of the commonly used dryer and the problem of difficult temperature control and uneven heating in the electromagnetic heating process.

[0039] The present application will be further described below in conjunction with the drawings and embodiments.

[0040] Figure 1 A structure diagram of an electromagnetic heating temperature control dryer is shown, which includes a rack 10, and the electromagnetic heating temperature control dryer further includes a container 20 and a control box 60 installed on the rack 10, and a plurality of stirring paddles 30 located inside the container 20, and a vacuum cover 40 is attached to the top of the container barrel 21.

[0041] In detail, Figure 2 A partial enlarged view of A is shown, Figure 1 The container 20 includes a container barrel 21, a magnetic guide sleeve 22, and a temperature sensor 28, and the plurality of stirring paddles 30 are located inside the container barrel 21; the magnetic guide sleeve 22 is located on the outer periphery of the container barrel 21, and an electromagnetic heating coil 24 is wound on the side away from the container barrel 21; the temperature sensor 28 is fixed with the magnetic guide sleeve 22 and the container barrel 21 through a mounting seat 26, and is used for monitoring the material temperature inside the container barrel 21; wherein, the container barrel 21 and the magnetic guide sleeve 22 have a water channel, and circulating water flows in the water channel, and the electromagnetic heating coil 24 and the temperature sensor 28 are electrically connected with the control box 60.

[0042] In the embodiment of the present application, the measuring end of the temperature sensor 28 is flush with the inner wall of the container barrel 21 (not protruding), and the inner wall of the container barrel 21 has a small hole matched with the measuring end of the temperature sensor 28.

[0043] In the embodiment of the present application, when electromagnetic heating is needed, the control box 60 is connected through a line to control the electromagnetic heating coil 24 to generate alternating current, and then generate a changing magnetic field, which generates eddy current on the magnetic guide sleeve 22, and then generates heat to heat the material inside the container barrel 21.

[0044] In the embodiment of the present application, the multi-piece stirring paddle 30 stirs the material in the container barrel 21 to move axially, avoiding local temperature from being too high, and circulating water is passed between the container barrel 21 and the magnetic guide sleeve 22, so that the material is uniformly heated, the temperature sensor 28 monitors and controls the material temperature, and feeds back to the control box 60 to control the frequency of alternating current, and then control the frequency of changing magnetic field to control the eddy current heat generation, realizing the controllability of eddy current heating.

[0045] In one example, the mounting seat 26 is fixed with the magnetic guide sleeve 22 and the container barrel 21 by welding.

[0046] It is worth mentioning that the control box 60 at least includes a programmable logic controller PLC.

[0047] Further, please refer to Figure 1 and Figure 2 The container 20 further comprises a heat preservation sleeve 27, a flow guide plate 23, and a heat preservation rock wool 25, the heat preservation sleeve 27 is fixed to the inner side of the mounting seat 26 by a flange 29, and wraps the outer periphery of the temperature sensor 28; the flow guide plate 23 is a plurality of, the plurality of flow guide plates 23 are distributed in the water channel, and the plurality of flow guide plates 23 are connected with the container barrel 21; the heat preservation rock wool 25 wraps the outer periphery of the electromagnetic heating coil 24, and is used for temperature locking.

[0048] In the embodiment of the present application, the heat preservation sleeve 27 isolates the influence of the magnetic guide sleeve 22 on the measuring accuracy of the temperature sensor 28.

[0049] In one example, the plurality of flow guide plates 23 are connected with the container barrel 21 by welding, and the plurality of flow guide plates 23 are used to make the heating process of the circulating water uniformly heated.

[0050] It is worth mentioning that the electromagnetic heating coil 24 is wound on the magnetic guide sleeve 22 layer by layer, and the winding direction of the electromagnetic heating coil 24 is opposite to the stirring direction of the multi-piece stirring paddle 30.

[0051] In the embodiment of the application, the electromagnetic heating coil 24 is wound on the magnetic guide sleeve 22 layer by layer in the opposite direction to the stirring direction of the multi-blade stirring paddle 30, so that the magnetic field distribution is more uniform, and the heating efficiency and uniformity are improved. At the same time, the coil wound in the opposite direction can generate an eddy current effect opposite to the stirring direction during stirring, further enhancing the mixing and heat transfer effect of the material, avoiding local overheating and caking, and ensuring the quality and uniformity of the finished powder.

[0052] Specifically, Figure 3 The structure diagram of the multi-blade stirring paddle of the electromagnetic heating temperature control drying machine is shown, the multi-blade stirring paddle 30 comprises a stirring main shaft 32, a plurality of width rods 33, and a plurality of paddle blades 34, the stirring main shaft 32 is rotationally connected in the container barrel 21, the plurality of width rods 33 are connected on the stirring main shaft 32 in a length increasing and staggered manner from bottom to top, the plurality of paddle blades 34 are connected on the plurality of width rods 33 away from the stirring main shaft 32, and the gap between the plurality of paddle blades 34 and the inner wall of the container barrel 21 is consistent. Figure 1 In addition, referring to

[0053] It should be noted that the structure design of the multi-blade stirring paddle 30 can make the material axially stirred to a certain height, then fall back to the bottom center of the container barrel 21 due to gravity, and then be stirred in a cycle, so that local temperature is prevented from being too high, the material is prevented from being burnt, uneven heating is avoided, and the product quality is improved.

[0054] Next, the working principle of the electromagnetic heating temperature control drying machine is described.

[0055] The electromagnetic heating process is as follows: the electromagnetic heating coil 24 is wound on the magnetic guide sleeve 22 layer by layer in the opposite direction to the stirring direction of the multi-blade stirring paddle 30, the two terminals of the electromagnetic heating coil 24 are connected to the control box 60, the control box 60 controls the current flow direction to change at a certain frequency, an alternating magnetic field is generated around the electromagnetic heating coil 24 according to the principle of electricity generating magnetism, the magnetic field generates an eddy current on the magnetic guide sleeve 22, the eddy current heat effect makes the magnetic guide sleeve 22 generate heat, and then the circulating water between the container barrel 21 and the magnetic guide sleeve 22 is heated, and then the material in the container barrel 21 is heated through the good heat conductivity of the container barrel 21, so that electromagnetic heating is realized.

[0056] Temperature control mode: by welding the flow guide plate 23 on the container barrel 21 on the container 20, and introducing normal temperature circulating water, avoid uneven heating, then the temperature sensor 28 monitored by the heat preservation sleeve 27 separates the material temperature inside the container barrel 21, the temperature sensor 28 feeds back the temperature change to the control box 60, if the temperature is higher than the set temperature, the alternating current frequency is reduced, the eddy current heat effect is reduced, otherwise the temperature is too low, the alternating current frequency is increased, the eddy current heat effect is enhanced; the structure design of the multi-piece stirring paddle 30 can make the material axial stirring lift to a certain height due to gravity and fall back to the center of the container barrel 21, and the material is stirred in a cycle, so that the local temperature is prevented from being too high and the material is prevented from being burnt, temperature control is realized, uneven heating is avoided, and product quality is improved.

[0057] In summary, the utility model discloses a multi-piece stirring paddle is arranged in the container barrel, a magnetic guide sleeve is arranged on the periphery of the container barrel, an electromagnetic heating coil is wound on the side of the magnetic guide sleeve away from the container barrel, and a temperature sensor is also arranged, which is fixed with the magnetic guide sleeve and the container barrel through a mounting seat and is used for monitoring the material temperature inside the container barrel. The container barrel and the magnetic guide sleeve have a water channel therebetween, circulating water flows in the water channel, and the electromagnetic heating coil and the temperature sensor are electrically connected with a control box. In this case, the electromagnetic heating has a long service life and is safe and reliable, the electromagnetic heating coil itself does not generate heat, the maintenance cost is extremely low, the electromagnetic heating coil generates eddy current heating through an alternating magnetic field, the surface temperature of the electromagnetic heating coil itself is slightly higher than room temperature, and heat is fully utilized. Moreover, this mode is high in energy-saving efficiency, accurate in temperature control, adopts internal heating, the molecules in the heating body generate heat due to electromagnetic induction and eddy current effect, hot start is very fast, the average preheating time is shortened by more than 60% compared with the resistance coil heating mode, the thermal efficiency is higher than 90%, and product drying effect is good.

[0058] In the embodiments disclosed in the utility model, the terms "mounting", "connection", "connecting", "fixing" and the like should be understood in a broad sense. For example, "connection" can be fixed connection, detachable connection or integral connection. "Connection" can be direct connection or indirect connection through an intermediate medium. Those skilled in the art can understand the specific meanings of the above terms in the embodiments disclosed in the utility model according to specific conditions.

[0059] The above description is only the preferred embodiments of the utility model, and it should be pointed out that those skilled in the art can make some improvements and refinements without departing from the principles of the utility model, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. An electromagnetic heating temperature-controlled dryer comprising a frame (10), characterized in that, The electromagnetic heating temperature control dryer further comprises a container (20) and a control box (60) installed on the rack (10), and a multi-blade stirring paddle (30) located inside the container (20), wherein the container (20) comprises: a container barrel (21) in which the multi-blade stirring paddle (30) is located; a magnetic guide sleeve (22) located on the outer periphery of the container barrel (21), and an electromagnetic heating coil (24) wound on the side of the magnetic guide sleeve (22) away from the container barrel (21); and a temperature sensor (28) fixed with the magnetic guide sleeve (22) and the container barrel (21) through a mounting seat (26) for monitoring the temperature of the material inside the container barrel (21); wherein the container barrel (21) and the magnetic guide sleeve (22) have a water channel therebetween, circulating water flows in the water channel, and the electromagnetic heating coil (24) and the temperature sensor (28) are electrically connected with the control box (60).

2. The electromagnetic heating temperature-controlled dryer according to claim 1, characterized in that, The container (20) further comprises: a heat preservation sleeve (27) fixed to the inner side of the mounting seat (26) through a flange (29) and wrapped around the outer periphery of the temperature sensor (28).

3. The electromagnetic heating temperature-controlled dryer according to claim 1, wherein The container (20) further comprises: a plurality of flow guide plates (23) spaced apart and distributed in the water channel, and the flow guide plates (23) are connected with the container barrel (21).

4. The electromagnetic heating temperature-controlled dryer according to claim 1, wherein The container (20) further comprises: a heat preservation rock wool (25) wrapped around the outer periphery of the electromagnetic heating coil (24).

5. The electromagnetic heating temperature-controlled dryer according to any one of claims 1 to 4, characterized in that, The electromagnetic heating coil (24) is wound on the magnetic guide sleeve (22) layer by layer, and the winding direction of the electromagnetic heating coil (24) is opposite to the stirring direction of the multi-blade stirring paddle (30).

6. The electromagnetic heating temperature-controlled dryer according to claim 1, wherein The multi-blade stirring paddle (30) comprises: a stirring main shaft (32) rotationally connected in the container barrel (21); a plurality of amplitude rods (33) connected on the stirring main shaft (32) with the length of the amplitude rods (33) increasing from bottom to top; and a plurality of paddle blades (34) connected to the ends of the amplitude rods (33) away from the stirring main shaft (32); wherein the gaps between the paddle blades (34) and the inner wall of the container barrel (21) are uniform.

7. The electromagnetic heating temperature-controlled dryer according to claim 6, wherein The top of the container barrel (21) is covered with a vacuum cover (40).

8. The electromagnetic heating temperature-controlled dryer according to claim 7, wherein The electromagnetic heating temperature control dryer further comprises: a driving motor (50) installed on the vacuum cover (40), the stirring main shaft (32) is drivingly connected with the power output end of the driving motor (50) through a coupling (31), and the driving motor (50) is electrically connected with the control box (60).

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