A device for connecting a stirring paddle

Abstract

The utility model discloses a device for connecting stirring paddle belongs to stirring equipment connecting structure technical field, the utility model discloses to solve the problem that the existing mixer connecting mode exists structure complex, cleaning is difficult, is easy to rust and stirring rod is easy to come off, mainly adopts the structure of chuck and nut cooperation, connects motor shaft through hollow prism, and hollow screw rod inserts the stirring rod, and realizes clamping fixation by nut screwing. The utility model can realize the stable connection of stirring paddle, and the operation is convenient, and is easy to clean, reduces the pollution risk, is applicable to the stirring scene of higher cleanliness requirement.

Description

Technical Field

[0001] This utility model belongs to the technical field of connection structure of mixing equipment, and specifically relates to a device for connecting a mixing paddle. Background Technology

[0002] In the preparation process of drugs such as recombinant human urokinase for injection, electric stirrers are often used to thoroughly stir the prepared intermediate products. Existing electric stirrers typically connect the stirring paddle to the motor shaft via a gear structure. This gear structure requires a special key to tighten or loosen in order to install and remove the stirring paddle.

[0003] However, in actual production processes, this traditional connection method has the following drawbacks:

[0004] 1. Repeated tightening and loosening of gears during long-term use can easily cause the protective layer on the gear surface to peel off, leading to corrosion and affecting the equipment's lifespan and cleanliness.

[0005] 2. The gear components have a complex structure and are difficult to clean, making it difficult to meet the high cleanliness requirements in the pharmaceutical production process;

[0006] 3. During operation, the special key may generate metal particles due to meshing and friction with the gears, posing a risk of contaminating intermediate products after preparation;

[0007] 4. If the stirring rod is not securely connected to the motor shaft, the stirring rod may come loose and fall into the container, causing the batch to be scrapped, resulting in safety hazards and economic losses.

[0008] It is evident that there is an urgent need for a stirring paddle connection device with a simpler structure, more robust connection, easier cleaning, and effective reduction of contamination risk, in order to improve the safety, stability, and ease of operation of stirring equipment in the liquid preparation process. Utility Model Content

[0009] The purpose of this invention is to provide a stirring paddle connection device that is simple in structure, has a stable connection, is easy to clean, and can effectively prevent pollution, so as to improve the safety and reliability of the stirring process.

[0010] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0011] An apparatus for connecting a stirring paddle, comprising:

[0012] Collets and nuts;

[0013] The chuck includes a hollow prism and a hollow screw connected to one end of the hollow prism;

[0014] The hollow prism has a hollow cavity structure inside, which is used to insert the motor shaft of the stirrer;

[0015] The hollow screw has an external thread and a cavity structure, the cavity structure being used to insert the rod part of the stirring paddle;

[0016] The nut includes a main body and crossbars disposed on both sides of the main body;

[0017] The main body contains a threaded hole that mates with the external thread of the hollow screw.

[0018] Furthermore, the hollow prism is provided with a top screw hole perpendicular to the hollow axis and passing through the axis.

[0019] Furthermore, a set screw is installed in the set screw hole for fixing the chuck to the motor shaft by tightening the set screw.

[0020] Furthermore, the hollow screw has several slots extending axially on its sidewall.

[0021] Furthermore, the end of the hollow screw is a tapered head.

[0022] Furthermore, the threaded hole of the nut extends from the first end to the second end, and the diameter of the hole at the second end gradually decreases.

[0023] Furthermore, the body and crossbar of the nut are cylindrical.

[0024] Furthermore, the clamp and nut are made of steel.

[0025] The beneficial effects achieved by this utility model are as follows:

[0026] 1. This utility model achieves a stable connection between the stirring paddle and the motor shaft through the cooperation of the clamp and nut, which prevents the stirring rod from loosening and falling off, and improves the safety of equipment operation.

[0027] 2. This utility model adopts a radial clamping structure of hollow screw and nut, which can effectively clamp the stirring rod. The structure is simple, the disassembly and assembly are convenient, and the efficiency of replacement and maintenance is improved.

[0028] 3. Both the chuck and nut of this utility model are made of stainless steel, which has good corrosion resistance and avoids the rust problem caused by the peeling off of the protective layer in traditional gear structures.

[0029] 4. This utility model eliminates the traditional structure of gears and special keys, reducing the risk of generating metal particles during operation, which helps prevent contamination during the liquid preparation process and meets the cleanliness requirements of pharmaceutical production.

[0030] 5. The clamp structure of this utility model is easy to clean, which improves the problem of inconvenient cleaning of the mixing device and enhances the hygiene management level of the equipment. Attached Figure Description

[0031] Figure 1 This is an overall structural diagram of the device for connecting the stirring paddle in Example 1.

[0032] Figure 2 This is a front view of the clamp in Embodiment 1.

[0033] Figure 3 This is a top view of the clamp in Example 1.

[0034] Figure 4 This is a front view of the nut in Example 1.

[0035] Figure 5 This is a top view of the nut in Example 1.

[0036] Figure 6 This is a front view of the clamp in Embodiment 2.

[0037] Explanation of reference numerals in the attached figures:

[0038] 10: Clamp; 11: Hollow prism;

[0039] 12: Hollow screw; 13: Set screw hole;

[0040] 14: Axial groove; 15: Tapered head;

[0041] 20: Nut; 21: Main body;

[0042] 22: Crossbar; 23: Threaded hole;

[0043] 24: First end; 25: Second end. Detailed Implementation

[0044] To make the technical solution and beneficial effects of this utility model clearer and more explicit, the present utility model will now be described in further detail with reference to the accompanying drawings and specific embodiments. It should be understood that these embodiments are only used to illustrate the present utility model and are not intended to limit the scope of protection of the present utility model.

[0045] Example 1

[0046] This embodiment provides a device for connecting a stirring paddle, such as... Figure 1 As shown, the device includes a chuck 10 and a nut 20, which are mainly used to reliably mount the agitator onto the motor shaft of the electric agitator.

[0047] The structure of the chuck 10 is as follows Figure 2 and Figure 3As shown, it includes a hollow prism 11 and a hollow screw 12 connected to one end thereto. The interior of the hollow prism 11 is a cavity structure for inserting the motor shaft of the electric stirrer. The hollow prism 11 is provided with a set screw hole 13, which is arranged along the vertical axis of the hollow shaft and passes through the axis line, for installing a set screw. The set screw fixes the chuck 10 to the motor shaft, ensuring that it does not loosen during operation.

[0048] The hollow screw 12 is fixedly connected to the hollow prism 11, and its outer surface is provided with external threads, which mate with the internal threads of the threaded hole 23 on the inner side of the nut 20. An axial groove 14 is provided on one side of the hollow screw 12, giving it a certain degree of radial elasticity. When the stirring rod (i.e., the rod part of the stirring paddle) is inserted into the internal cavity of the hollow screw 12, tightening the nut 20 causes the hollow screw 12 to radially contract under axial compression, thereby achieving reliable clamping of the stirring rod.

[0049] In addition, the free end of the hollow screw 12 is a conical head 15. When the nut 20 is tightened further, its inner hole gradually shrinks and presses against the conical head 15, causing radial compression of the conical head, thereby further enhancing the clamping force on the stirring rod and ensuring that it does not loosen or fall off during high-speed stirring.

[0050] Nut 20 is made of stainless steel and its structure is as follows: Figure 4 and Figure 5 As shown, the device includes a main body 21 and crossbars 22 disposed on both sides of the main body. The main body 21 is preferably cylindrical, with a threaded hole 23 inside. The hole wall has internal threads that mate with the hollow screw 12. The threaded hole 23 extends from a first end 24 to a second end 25, and the diameter of the hole at the second end 25 gradually decreases, forming a tapered, conical structure to further apply pressure to the conical head 15 during tightening. The crossbars 22 are disposed outside the nut 20 to enhance the torque during manual tightening, facilitating manual tightening or loosening of the nut by the operator.

[0051] The installation and usage methods for this device are as follows:

[0052] 1. Insert the motor shaft of the agitator into the hollow prism 11 of the chuck 10;

[0053] 2. By screwing the set screw into the set screw hole 13, the motor shaft is securely connected to the chuck 10;

[0054] 3. Fit the nut 20 onto the hollow screw 12 of the collet 10 and tighten it to the pre-tightened state;

[0055] 4. Insert the stirring rod into the cavity of the hollow screw 12 through the second end 25 of the nut 20;

[0056] 5. Continue to tighten nut 20 so that it presses the hollow screw 12 through the gradually narrowing orifice and finally clamps the stirring rod to achieve a stable connection.

[0057] Example 2

[0058] This embodiment provides another device for connecting the stirring paddle, whose structure is largely the same as the device in Embodiment 1, the only difference being that the shape of the clamp is slightly different, such as... Figure 6 As shown, the structure and function of this chuck are exactly the same as those in Example 1, and will not be described again.

[0059] Through the above structural design, the connection device provided by this utility model not only achieves a stable connection of the stirring paddle and is easy to operate, but also effectively avoids problems such as the protective layer falling off, rusting, and particulate pollution caused by repeated disassembly and assembly of traditional gear structures, thereby improving the cleanliness and safety of the equipment and making it suitable for occasions with high requirements for production cleanliness.

[0060] It should be noted that the above embodiments are only preferred embodiments of the present utility model. Those skilled in the art can make several improvements or equivalent substitutions without departing from the principle of the present utility model, and all such improvements or substitutions should fall within the protection scope of the present utility model.

Claims

1. A device for connecting a stirring paddle, characterized in that, include: Collets and nuts; The chuck includes a hollow prism and a hollow screw connected to one end of the hollow prism; The hollow prism has a hollow cavity structure inside, which is used to insert the motor shaft of the stirrer; The hollow screw has an external thread and a cavity structure, the cavity structure being used to insert the rod part of the stirring paddle; The nut includes a main body and crossbars disposed on both sides of the main body; The main body contains a threaded hole that mates with the external thread of the hollow screw.

2. The device for connecting a stirring paddle as described in claim 1, characterized in that, The hollow prism is provided with a set screw hole that is perpendicular to the hollow axis and passes through the axis.

3. The device for connecting the stirring paddle as described in claim 2, characterized in that, A set screw is installed in the set screw hole, which is used to fix the chuck to the motor shaft by tightening the set screw.

4. The device for connecting a stirring paddle as described in claim 1, characterized in that, The hollow screw has several slots extending axially on its side wall.

5. The device for connecting a stirring paddle as described in claim 1, characterized in that, The hollow screw has a tapered end.

6. The device for connecting a stirring paddle as described in claim 1, characterized in that, The threaded hole of the nut extends from the first end to the second end, and the diameter of the hole at the second end gradually decreases.

7. The device for connecting a stirring paddle as described in claim 1, characterized in that, The nut's body and crossbar are cylindrical.

8. The device for connecting a stirring paddle as described in claim 1, characterized in that, The clamp and nut are made of steel.

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