Polyurethane mixing equipment

Abstract

The utility model relates to a polyurethane stirring device, comprising a cylinder, a rotating shaft, a limiting seat, a mounting seat and a centrifugal paddle. The rotating shaft is rotatably connected to the middle part of the cylinder, the mounting seat is fixedly mounted on the circumferential surface of the rotating shaft, a mounting notch is provided on the mounting seat, the end of the centrifugal paddle is located in the mounting notch and is rotatably connected, the length of the centrifugal paddle is less than the shortest distance from the rotating shaft to the inner wall of the cylinder, the limiting seat is used to limit the deviation angle of the centrifugal paddle, in this scheme, a mounting seat is arranged on the rotating shaft, a centrifugal paddle is arranged in the mounting notch of the mounting seat, when the rotating shaft does not rotate, the centrifugal paddle naturally droops under the action of gravity, the installation of the rotating shaft is convenient when stationary, and the transportation is convenient and occupies a small area, when the rotating shaft rotates, as the rotating speed of the rotating shaft becomes faster, the centrifugal paddle is spread outward under the action of centrifugal force, thereby increasing the stirring range.

Description

Technical Field

[0001] The utility model belongs to the technical field of chemical equipment, and specifically relates to polyurethane stirring equipment. Background Art

[0002] Polyurethane resin (Polyurethane Resin) is a polymer material with high strength, tear resistance, wear resistance and other properties. It is widely used in daily life, industrial and agricultural production, medicine and other fields; it is used for rollers, conveyor belts, hoses, auto parts, soles, synthetic leather, wires and cables, and medical artificial organs; the main production equipment of polyurethane resin is a reaction stirring kettle, which is formed by mixing and stirring raw materials. The existing reaction stirring kettle generally includes a cylinder and a stirring paddle. The stirring paddle generally consists of a rotating rod and blades. The blades are fixed on the circumference of the rotating rod. This type of stirring paddle is relatively complicated to install due to its large size, and when the blade is damaged, the entire stirring paddle needs to be replaced. In view of this, the present scheme is generated. Utility Model Content

[0003] In view of the deficiencies in the prior art, the technical problem to be solved by the utility model is to provide a polyurethane stirring device, wherein the centrifugal paddle is expanded by centrifugal force and then stirs.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a polyurethane stirring equipment, including a cylinder, a rotating shaft, a mounting seat and a centrifugal paddle, the rotating shaft is rotatably connected to the middle part of the cylinder, the mounting seat is fixedly installed on the circumferential surface of the rotating shaft, the mounting seat has a mounting notch, the end of the centrifugal paddle is located in the mounting notch and is rotatably connected, and the length of the centrifugal paddle is less than the shortest distance from the rotating shaft to the inner wall of the cylinder.

[0005] Furthermore, the centrifugal paddle includes a connecting portion and a stirring portion, and two corresponding side surfaces of the stirring portion are cambered surfaces.

[0006] Furthermore, the mounting seat is provided with a mounting hole, the rotating shaft is provided with a connecting hole, and the mounting seat is connected by bolts extending into the mounting hole and the connecting hole.

[0007] Furthermore, the number of the installation notches is 2-4.

[0008] Furthermore, the number of the mounting seats is 2-3.

[0009] Furthermore, the stirring device also includes a driving motor, the upper end of the rotating shaft extends out of the upper surface of the cylinder, the upper end of the rotating shaft has a driven gear, and the driving motor and the driven gear are connected through a gear set.

[0010] Furthermore, the stirring device also includes a limit seat, which includes a connecting seat and an inclined limit ring, the inclined limit ring is connected to the circumferential surface of the connecting seat, the inclined limit ring is inclined downward and outward, and the connecting seat is detachably connected to the upper surface of the mounting seat.

[0011] Furthermore, an external thread is formed on the circumferential surface of the rotating shaft, and the external thread is located above or below the mounting seat.

[0012] Furthermore, the cylinder includes a main body and a cover body, the main body has an upper opening, the cover body is located above the main body and is used to close the upper opening, and a heat preservation chamber is arranged in the side wall of the main body.

[0013] Furthermore, an inlet and an outlet are provided between the heat preservation chamber and the outer wall of the cylinder.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] In the utility model, a mounting seat is arranged on the rotating shaft, and a centrifugal paddle is arranged in the mounting notch of the mounting seat. When the rotating shaft does not rotate, the centrifugal paddle naturally droops under the action of gravity, which is convenient for installation of the rotating shaft when stationary and convenient for transportation with a small footprint. When the rotating shaft rotates, as the rotating shaft speed increases, the centrifugal paddle expands outwards under the action of centrifugal force to increase the stirring range. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural schematic diagram of a polyurethane stirring device of the utility model;

[0017] Figure 2 It is a cross-sectional structural schematic diagram of the centrifugal impeller of the utility model in a static state;

[0018] Figure 3 It is a cross-sectional structural schematic diagram of the centrifugal impeller of the utility model in the starting state;

[0019] Figure 4 It is a three-dimensional structural schematic diagram of the rotating shaft and the centrifugal paddle in the utility model;

[0020] Figure 5 It is a schematic diagram of the three-dimensional structure of the rotating shaft having a limit seat in the utility model;

[0021] Figure 6 It is a three-dimensional structural schematic diagram of the rotating shaft with external threads in the utility model.

[0022] Markings in the figure: 1. cylinder; 11. insulation chamber; 2. rotating shaft; 21. external thread; 3. mounting seat; 31. mounting notch; 4. driving motor; 5. centrifugal paddle; 51. connecting part; 52. stirring part; 6. limiting seat; 61. connecting seat; 62. tilting limiting ring. DETAILED DESCRIPTION

[0023] In order to make the above features and advantages of the present invention more obvious and understandable, embodiments are given below with reference to the accompanying drawings for detailed description as follows.

[0024] like Figure 1-Figure 4 As shown, this embodiment provides a polyurethane stirring device, including a cylinder 1, a rotating shaft 2, a mounting seat 3, a driving motor 4 and a centrifugal paddle 5.

[0025] The cylinder 1 includes a body and a cover. The body has an upper opening. The cover is located above the body and is used to close the upper opening. The rotating shaft 2 is rotatably connected to the middle of the cylinder 1. A heat preservation chamber 11 is also provided between the side walls of the body. The heat preservation chamber 11 has an inlet and an outlet. The temperature of the inner cavity of the body can be controlled by injecting a liquid with a temperature into the heat preservation chamber 11. The driving motor 4 is located on the upper surface of the cylinder 1. The upper end of the rotating shaft 2 extends out of the upper surface of the cylinder 1. The upper end of the rotating shaft 2 has a driven gear. The driving motor 4 and the driven gear are connected through a gear set. The bottom of the inner cavity of the cylinder 1 has a bearing seat. The lower end of the rotating shaft 2 is located in the bearing seat and is rotatably connected.

[0026] Three equally spaced mounting seats 3 are fixedly mounted on the circumference of the rotating shaft 2. The number of mounting seats 3 is set according to the length of the cylinder 1. Specifically, the mounting seat 3 has a mounting hole, and the rotating shaft 2 has a connecting hole. The mounting seat 3 is connected by bolts inserted into the mounting hole and the connecting hole. The mounting seat 3 has three annularly spaced mounting notches 31. The end of the centrifugal paddle 5 is located in the mounting notch 31 and is rotatably connected. The length of the centrifugal paddle 5 is less than the shortest distance from the rotating shaft 2 to the inner wall of the cylinder 1. The centrifugal paddle 5 includes a connecting portion 51 and a stirring portion 52. The two corresponding side surfaces of the stirring portion 52 are arc surfaces. The arc surface is to increase the contact area and enhance the stirring effect.

[0027] When the rotating shaft 2 is not rotating, the centrifugal paddle naturally droops under the action of gravity, which is convenient for the installation of the rotating shaft 2 when it is stationary, and is convenient for transportation and occupies a small area. When the rotating shaft 2 rotates, as the speed of the rotating shaft 2 increases, the centrifugal paddle expands outward under the action of centrifugal force, thereby increasing the stirring range.

[0028] Preferably, if Figure 5 As shown, the stirring device also includes a limit seat 6, which includes a connecting seat 61 and an inclined limit ring 62. The inclined limit ring 62 is connected to the circumference of the connecting seat 61, and the inclined limit ring 62 is inclined downward and outward. The connecting seat 61 is detachably connected to the upper surface of the mounting seat 3. When the limit seat 6 is set, the length of the centrifugal paddle can be greater than the radius of the cylinder 1, and the setting of the limit seat 6 can limit the offset angle of the centrifugal paddle.

[0029] Preferably, if Figure 6As shown, an external thread 21 is formed on the circumference of the rotating shaft 2, and the external thread 21 is located above or below the mounting seat 3. The external thread 21 is arranged on the circumference of the rotating shaft 2, so that the stirred raw materials can form a vortex, thereby enhancing the stirring effect.

[0030] The above shows and describes the basic principles and main features of the invention and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the invention, the utility model may have various changes and improvements, which shall fall within the scope of the utility model to be protected. The scope of protection of the utility model shall be defined by the attached claims and their equivalents.

Claims

1. A polyurethane stirring device, characterized in that: It includes a cylinder, a rotating shaft, a mounting seat, a centrifugal paddle and a limiting seat, the rotating shaft is rotatably connected to the middle part of the cylinder, the mounting seat is fixedly installed on the circumferential surface of the rotating shaft, the mounting seat is provided with a mounting notch, the end of the centrifugal paddle is located in the mounting notch and is rotatably connected, the length of the centrifugal paddle is less than the shortest distance from the rotating shaft to the inner wall of the cylinder; the centrifugal paddle includes a connecting part and a stirring part, and the two corresponding side surfaces of the stirring part are cambered surfaces; the limiting seat includes a connecting seat and an inclined limiting ring, the inclined limiting ring is connected to the circumferential surface of the connecting seat, the inclined limiting ring is inclined downward and outward, and the connecting seat is detachably connected to the upper surface of the mounting seat.

2. A polyurethane stirring device according to claim 1, characterized in that: The mounting seat is provided with a mounting hole, the rotating shaft is provided with a connecting hole, and the mounting seat is connected with the connecting hole by bolts extending into the mounting hole.

3. A polyurethane stirring device according to claim 1, characterized in that: The number of the installation notches is 2-4.

4. A polyurethane stirring device according to claim 1, characterized in that: The number of the mounting seats is 2-3.

5. A polyurethane stirring device according to claim 1, characterized in that: The stirring device also includes a driving motor. The upper end of the rotating shaft extends out of the upper surface of the cylinder. The upper end of the rotating shaft is provided with a driven gear. The driving motor and the driven gear are connected via a gear set.

6. A polyurethane stirring device according to claim 1, characterized in that: An external thread is formed on the circumferential surface of the rotating shaft, and the external thread is located above or below the mounting seat.

7. A polyurethane stirring device according to claim 1, characterized in that: The cylinder comprises a main body and a cover body, wherein the main body has an upper opening, the cover body is located above the main body and is used to close the upper opening, and a heat preservation chamber is arranged in a side wall of the main body.

8. A polyurethane stirring device according to claim 7, characterized in that: An inlet and an outlet are also arranged between the heat preservation chamber and the outer side wall of the cylinder.

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