Liquid stirrer

Abstract

A liquid stirrer is provided with a motor, a stirring paddle, a first bevel gear, a second bevel gear and a heat insulation connecting assembly, a rotating shaft of the motor is fixedly connected with the first bevel gear, the stirring paddle and the second bevel gear are both fixedly connected with the heat insulation connecting assembly, and the first bevel gear is meshed with the second bevel gear. Compared with the prior art that the stirring paddle and the rotating shaft are in direct butt joint or fixed through a coupler, the liquid stirrer has the advantages that through meshing of the first bevel gear and the second bevel gear, contact between the rotating shaft and the stirring paddle is reduced while transmission is achieved, so that the heat conduction area is reduced, and the heat insulation effect is achieved; and the heat insulation connecting assembly can also reduce heat conduction between the stirring paddle and the second bevel gear. Heat conduction between the stirring paddle and the freezing sleeping liquid is reduced through the heat insulation layer.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring devices, in particular to a liquid stirrer. Background Art

[0002] The stirring motor is the motor part used to drive the agitator to rotate in the stirring equipment. Common stirring motors include DC motors, AC motors and variable frequency motors. However, no matter which type of motor, the motor is equipped with engine oil inside. The engine oil is used for lubrication and friction reduction, auxiliary cooling, cleaning, sealing and leak prevention, rust prevention and corrosion prevention, etc., to ensure the normal operation of the motor. In addition, a sealing gasket is also provided inside the motor. The sealing gasket is elastic and used to prevent liquid oil leakage, such as a brushless motor with Chinese patent announcement number CN205670739U. For the motor used as a stirring paddle, the motor heats up in the process of driving the stirring paddle to rotate, and the sealing gasket becomes softer in a high temperature environment, so that the sealing performance is better.

[0003] The current cryostasis technology uses cryostasis liquid at -30℃ to -50℃ as a refrigerant to directly contact the frozen object, and can complete direct freezing and preservation within 6 minutes to 30 minutes, and the cell membrane of the frozen object is not frozen and cracked. The stirring paddle in the current cryostasis liquid stirring device is directly connected to the rotating shaft of the motor or fixed through a coupling. During the stirring process of the cryostasis liquid by the stirring paddle, the heat of the motor is quickly transferred to the stirring paddle, which not only causes the temperature of the cryostasis liquid to rise, but also freezes and hardens the sealing gasket inside the motor, causing lubricant leakage and reducing the service life of the motor.

[0004] Therefore, in view of the shortcomings of the prior art, it is necessary to provide a liquid agitator to solve the shortcomings of the prior art. Utility Model Content

[0005] The utility model aims to avoid the shortcomings of the prior art and provide a liquid agitator, which can prolong the service life of the motor and prevent the temperature of the freezing liquid from rising.

[0006] The above-mentioned purpose of the utility model is achieved through the following technical measures:

[0007] A liquid agitator is provided, which is provided with a motor, a stirring paddle, a first bevel gear, a second bevel gear and a thermal insulation connection component, wherein the rotating shaft of the motor is fixedly connected to the first bevel gear, the stirring paddle and the second bevel gear are both fixedly connected to the thermal insulation connection component, and the first bevel gear and the second bevel gear are meshed.

[0008] Preferably, the stirring paddle is provided with a heat insulating layer and a paddle body, and the outer surface of the paddle body is completely wrapped with the heat insulating layer.

[0009] Preferably, the thermal conductivity of the thermal insulation layer and the thermal conductivity of the thermal insulation connection assembly are both smaller than the thermal conductivity of the paddle body.

[0010] Preferably, the above-mentioned thermal insulation connection assembly is provided with an assembly kit, a thermal insulation pad and a connecting piece, the assembly kit is embedded in the first assembly hole of the second bevel gear from the upper surface of the second bevel gear, the thermal insulation pad is abutted against the second bevel gear, and one end of the stirring paddle passes through the thermal insulation pad and is embedded in the interior of the assembly kit.

[0011] Preferably, the assembly kit is provided with a cushion layer and a sleeve, the sleeve is integrally connected to the cushion layer, the cushion layer abuts against the upper surface of the second bevel gear, the sleeve is sleeved inside the first assembly hole, and one end of the agitator is embedded in the second assembly hole of the sleeve.

[0012] Preferably, the cushion layer is provided with a first fixing hole.

[0013] The second bevel gear is provided with a second fixing hole.

[0014] Preferably, the thermal insulation pad is provided with a third fixing hole.

[0015] Preferably, the paddle body is provided with a fourth fixing hole.

[0016] Preferably, the connecting member passes through the first fixing hole, the second fixing hole, the third fixing hole and the fourth fixing hole in sequence from top to bottom.

[0017] Preferably, the paddle body is provided with a rod body, an assembly ring and a blade, the assembly ring is integrally connected to one end of the rod body, the blade is integrally connected to the other end of the rod body, one end of the rod body is embedded in the inside of the second assembly hole, the connecting piece is fixedly assembled with the assembly ring, and the fourth fixing hole is located on the assembly ring.

[0018] Preferably, the surface of the rod body, the surface of the assembly ring and the surface of the blade are all wrapped with the heat insulation layer.

[0019] Preferably, the inner surface of the fourth fixing hole is wrapped with the heat insulation layer.

[0020] Preferably, the rotation axis and the stirring paddle are perpendicular to each other.

[0021] Preferably, the paddles are provided in three layers.

[0022] Preferably, the central axis of the second bevel gear, the central axis of the assembly kit, and the central axis of the stirring paddle are all collinear.

[0023] Preferably, the thermal conductivity of the thermal insulation layer, the thermal conductivity of the assembly kit and the thermal conductivity of the thermal insulation pad are all less than or equal to 1w / mK.

[0024] Preferably, the paddle body is a stainless steel paddle body.

[0025] Preferably, the first bevel gear is a stainless steel first bevel gear.

[0026] Preferably, the second bevel gear is a stainless steel second bevel gear.

[0027] Preferably, the above-mentioned connecting parts are stainless steel connecting parts.

[0028] Preferably, the thermal insulation layer is an engineering plastic thermal insulation layer.

[0029] Preferably, the above-mentioned assembly kit is an engineering plastic insulation layer.

[0030] Preferably, the above-mentioned thermal insulation pad is an engineering plastic thermal insulation pad.

[0031] The utility model is a liquid agitator, which is provided with a motor, a stirring paddle, a first bevel gear, a second bevel gear and a heat-insulating connection assembly. The rotating shaft of the motor is fixedly connected to the first bevel gear, and the stirring paddle and the second bevel gear are both fixedly connected to the heat-insulating connection assembly, and the first bevel gear and the second bevel gear are meshed; the stirring paddle is provided with a heat-insulating layer and a paddle body, and the outer surface of the paddle body is completely wrapped with the heat-insulating layer; the rotating shaft is perpendicular to the stirring paddle. Compared with the prior art in which the stirring paddle and the rotating shaft are directly connected or fixed by a coupling, the liquid agitator realizes transmission through the meshing of the first bevel gear and the second bevel gear, while reducing the contact between the rotating shaft and the stirring paddle, thereby reducing the heat conduction area, thereby producing a heat-insulating effect, and the heat-insulating connection assembly can also reduce the heat conduction between the stirring paddle and the second bevel gear. Moreover, the utility model reduces the heat conduction between the stirring paddle and the cryo-hibernation liquid through the heat-insulating layer. By using an insulating layer and insulating connecting components with a low thermal conductivity, the heat conduction channel between the rotating shaft and the paddle body is blocked, preventing the sealing gasket from freezing and becoming hard and brittle, thereby extending the service life of the motor. At the same time, it can also prevent the heat generated by the motor from being transferred to the stirring paddle, thereby increasing the temperature of the cryo-hibernation liquid. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention is further described with reference to the accompanying drawings, but the contents in the accompanying drawings do not constitute any limitation to the present invention.

[0033] Figure 1 It is a schematic diagram of the three-dimensional structure of the liquid agitator.

[0034] Figure 2 Schematic diagram of the structure of the stirring paddle and the thermal insulation connection assembly.

[0035] Figure 3 A cross-sectional view of the agitator blade, the thermally insulated connection assembly and the second bevel gear.

[0036] Figure 4 This is a cross-sectional view of the stirring paddle.

[0037] Figure 5 A schematic diagram of the structure of the assembly kit.

[0038] Figure 6 A cross-sectional view of the assembly kit.

[0039] Figure 7 It is a schematic diagram of the structure of the second bevel gear.

[0040] exist Figures 1 to 7 Including:

[0041] Thermal insulation connection assembly 100,

[0042] Assembly kit 110, cushion layer 111, seat 112, first fixing hole 113,

[0043] Thermal insulation pad 120,

[0044] Connector 130,

[0045] Motor 200, rotating shaft 210,

[0046] The stirring paddle 300, the heat insulating layer 310, the rod body 321, the assembly ring 322, the paddle 323, the fourth fixing hole 324,

[0047] The first bevel gear 400,

[0048] The second bevel gear 500 , the first assembly hole 510 , and the second fixing hole 520 . DETAILED DESCRIPTION

[0049] The technical solution of the utility model is further described in conjunction with the following embodiments.

[0050] Example 1

[0051] A liquid agitator, such as Figure 1 and Figure 2 As shown, a motor 200, a stirring paddle 300, a first bevel gear 400, a second bevel gear 500 and a thermal insulation connection assembly 100 are provided, the rotating shaft 210 of the motor 200 is fixedly connected to the first bevel gear 400, the stirring paddle 300 and the second bevel gear 500 are both fixedly connected to the thermal insulation connection assembly 100, and the first bevel gear 400 and the second bevel gear 500 are meshed.

[0052] The stirring paddle 300 is provided with a heat insulation layer 310 and a paddle body, and the outer surface of the paddle body is completely wrapped with the heat insulation layer 310. Figure 3 and Figure 4 .

[0053] The thermal conductivity of the heat insulating layer 310 and the heat insulating connection assembly 100 are both less than the thermal conductivity of the paddle body. The thermal conductivity of the heat insulating layer 310, the thermal conductivity of the assembly 110 and the thermal insulation pad 120 are all less than or equal to 1w / mK.

[0054] The other structures of the motor 200 are common knowledge in the art, and are not the focus of the invention of the present utility model. Therefore, the other structures of the motor 200 are not shown in the drawings, and only the rotating shaft 210 is shown.

[0055] like Figures 1 to 3 , Figure 7 As shown, the thermal insulation connection assembly 100 is provided with an assembly kit 110, an insulation pad 120 and a connector 130. The assembly kit 110 is embedded in the first assembly hole 510 of the second bevel gear 500 from the upper surface of the second bevel gear 500, the insulation pad 120 is in contact with the second bevel gear 500, and one end of the stirring paddle 300 passes through the insulation pad 120 and is embedded in the interior of the assembly kit 110.

[0056] like Figure 5 and Figure 6 As shown, the assembly kit 110 is provided with a cushion layer 111 and a sleeve 112. The sleeve 112 is integrally connected to the cushion layer 111. The cushion layer 111 abuts against the upper surface of the second bevel gear 500. The sleeve 112 is sleeved inside the first assembly hole 510, and one end of the stirring paddle 300 is embedded in the second assembly hole of the sleeve 112.

[0057] The cushion layer 111 is provided with a first fixing hole 113; the second bevel gear 500 is provided with a second fixing hole 520; the thermal insulation pad 120 is provided with a third fixing hole (not shown in the figure); the paddle body is provided with a fourth fixing hole 324; the connecting piece 130 passes through the first fixing hole 113, the second fixing hole 520, the third fixing hole and the fourth fixing hole 324 from top to bottom in sequence.

[0058] The paddle body is provided with a rod body 321, an assembly ring 322 and a blade 323. The assembly ring 322 is integrally connected to one end of the rod body 321, and the blade 323 is integrally connected to the other end of the rod body 321. One end of the rod body 321 is embedded in the inside of the second assembly hole, the connecting piece 130 is fixedly assembled with the assembly ring 322, and the fourth fixing hole 324 is located at the assembly ring 322; the surface of the rod body 321, the surface of the assembly ring 322 and the surface of the blade 323 are all wrapped with a heat insulation layer 310.

[0059] It should be noted that the function of the heat insulating pad 120 is to reduce the heat conduction between the assembly ring 322 and the lower surface of the second bevel gear 500. The function of the assembly kit 110 is to be fixedly assembled with the assembly ring 322, and the function of the sleeve 112 of the assembly kit 110 is to wrap one end of the rod body 321, thereby reducing the heat conduction with the inner wall of the first assembly hole 510 of the second bevel gear 500.

[0060] The inner surface of the fourth fixing hole 324 is wrapped with a heat insulation layer 310 .

[0061] It should be noted that the inner surface of the fourth fixing hole 324 is wrapped with a heat insulation layer 310 to reduce heat conduction between the fourth fixing hole 324 and the connecting member 130. The connecting member 130 of the present invention is specifically a screw and a nut.

[0062] The rotating shaft 210 and the stirring paddle 300 are perpendicular to each other; the paddle 323 is provided with three layers. The central axis of the second bevel gear 500, the central axis of the assembly kit 110, and the central axis of the stirring paddle 300 are all collinear.

[0063] It should be noted that the function of the rotating shaft 210 and the stirring paddle 300 being perpendicular to each other is to reduce the overall height of the liquid agitator, and even if the lubricant of the motor 200 leaks, it will not enter the cryostasis liquid along the stirring paddle 300 .

[0064] The paddle body is a stainless steel paddle body; the first bevel gear 400 is a stainless steel first bevel gear 400; the second bevel gear 500 is a stainless steel second bevel gear 500; the connector 130 is a stainless steel connector 130; the thermal insulation layer 310 is an engineering plastic thermal insulation layer 310; the assembly kit 110 is an engineering plastic thermal insulation layer 310; and the thermal insulation pad 120 is an engineering plastic thermal insulation pad 120.

[0065] It should be noted that the engineering plastics can be polyamide, polycarbonate, polyoxymethylene, modified polyphenylene ether and thermoplastic polyester. The heat insulating layer 310, the assembly kit 110 and the heat insulating pad 120 of this embodiment are specifically polyamide. The thermal conductivity of polyamide is 0.33w / mK, which is significantly lower than that of stainless steel. Therefore, the heat insulating layer 310, the assembly kit 110 and the heat insulating pad 120 can effectively block the heat conduction channel between the rotating shaft 210 and the paddle body, prevent the sealing gasket from freezing and hardening, and extend the service life of the motor 200. At the same time, it can also prevent the heat generated by the motor 200 from being conducted to the paddle body, thereby increasing the temperature of the freezing liquid. Moreover, the rigidity of the engineering plastics is large, and the strength between the rotating shaft 210 and the paddle body is high, which can ensure the transmission connection between the rotating shaft 210 and the paddle body, and will not affect the stirring effect.

[0066] The liquid agitator realizes transmission by meshing the first bevel gear 400 and the second bevel gear 500, while reducing the contact between the rotating shaft 210 and the stirring paddle 300, thereby reducing the heat conduction area, thereby producing a heat insulation effect, and the heat insulation connection component 100 can also reduce the heat conduction between the stirring paddle 300 and the second bevel gear 500. In addition, the utility model reduces the heat conduction between the stirring paddle 300 and the freezing liquid through the heat insulation layer 310. By using the heat insulation layer 310 with a small thermal conductivity and the heat insulation connection component 100, the heat conduction channel between the rotating shaft 210 and the paddle body is blocked, the sealing gasket is prevented from freezing and becoming hard and brittle, and the service life of the motor 200 is extended. At the same time, it can also prevent the heat generated by the motor 200 from being conducted to the stirring paddle 300, thereby increasing the temperature of the freezing liquid.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit the protection scope of the utility model. Although the utility model is described in detail with reference to the preferred embodiments, ordinary technicians in this field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the essence and scope of the technical solution of the utility model.

Claims

1. A liquid agitator, characterized in that: A motor, a stirring paddle, a first bevel gear, a second bevel gear and a heat-insulating connection assembly are provided, wherein the rotating shaft of the motor is fixedly connected to the first bevel gear, the stirring paddle and the second bevel gear are both fixedly connected to the heat-insulating connection assembly, and the first bevel gear is meshed with the second bevel gear; The stirring paddle is provided with a heat insulation layer and a paddle body, and the outer surface of the paddle body is completely wrapped with the heat insulation layer; The thermal conductivity of the thermal insulation layer and the thermal conductivity of the thermal insulation connection assembly are both smaller than the thermal conductivity of the paddle body.

2. The liquid agitator according to claim 1, characterized in that: The thermal insulation connection assembly is provided with an assembly kit, a thermal insulation pad and a connecting piece. The assembly kit is embedded in the first assembly hole of the second bevel gear from the upper surface of the second bevel gear, the thermal insulation pad is in contact with the second bevel gear, and one end of the stirring paddle passes through the thermal insulation pad and is embedded in the interior of the assembly kit.

3. The liquid agitator according to claim 2, characterized in that: The assembly kit is provided with a cushion layer and a sleeve seat, the sleeve seat is integrally connected to the cushion layer, the cushion layer abuts against the upper surface of the second bevel gear, the sleeve seat is sleeved inside the first assembly hole, and one end of the stirring paddle is embedded in the second assembly hole of the sleeve seat.

4. The liquid agitator according to claim 3, characterized in that: The cushion layer is provided with a first fixing hole; The second bevel gear is provided with a second fixing hole; The thermal insulation pad is provided with a third fixing hole; The paddle body is provided with a fourth fixing hole; The connecting member passes through the first fixing hole, the second fixing hole, the third fixing hole and the fourth fixing hole in sequence from top to bottom.

5. The liquid agitator according to claim 4, characterized in that: The paddle body is provided with a rod body, an assembly ring and a blade, the assembly ring is integrally connected to one end of the rod body, the blade is integrally connected to the other end of the rod body, one end of the rod body is embedded in the second assembly hole, the connecting member is fixedly assembled with the assembly ring, and the fourth fixing hole is located in the assembly ring; The surface of the rod body, the surface of the assembly ring and the surface of the blade are all wrapped with the heat insulation layer.

6. The liquid agitator according to claim 5, characterized in that: The inner surface of the fourth fixing hole is wrapped with the heat insulation layer.

7. The liquid agitator according to claim 6, characterized in that: The rotating shaft and the stirring paddle are perpendicular to each other; The paddles are provided with three layers.

8. The liquid agitator according to claim 7, characterized in that: The central axis of the second bevel gear, the central axis of the assembly sleeve, and the central axis of the stirring paddle are all collinear.

9. The liquid agitator according to any one of claims 2 to 8, characterized in that: The thermal conductivity of the thermal insulation layer, the thermal conductivity of the assembly kit and the thermal conductivity of the thermal insulation pad are all less than or equal to 1w / mK.

10. The liquid agitator according to any one of claims 2 to 8, characterized in that: The paddle body is a stainless steel paddle body; The first bevel gear is a stainless steel first bevel gear; The second bevel gear is a stainless steel second bevel gear; The connecting piece is a stainless steel connecting piece; The thermal insulation layer is an engineering plastic thermal insulation layer; The assembly kit is an engineering plastic heat insulation layer; The thermal insulation pad is an engineering plastic thermal insulation pad.

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