An enameled stirrer which is easy to install

Abstract

The utility model relates to the technical field of stirrers, and concretely relates to a cast stirrer convenient to install, which comprises a stirring shaft and a connecting head, the top end of the stirring shaft is coaxially fixedly connected with a positioning block, the circumferential surface of the stirring shaft close to the top end is processed with external threads, the bottom end of the connecting head is provided with a positioning groove matched with the positioning block, the surface of the connecting head is coaxially movably sleeved with a locking screw, the inner wall of the locking screw is processed with internal threads matched with the external threads of the stirring shaft, the surface of the connecting head is provided with an axial sliding groove, the locking screw can slide up and down along the track of the axial sliding groove, and the inner wall of the locking screw is coaxially fixedly connected with a limiting slip ring, the utility model aims at solving the problem that the existing cast stirrer is mainly connected with equipment by means of bolt preliminary butt joint, and the centering is difficult under the traditional bolt fastening mode.

Description

Technical Field

[0001] This utility model relates to the field of agitator technology, specifically to an enamel agitator that is easy to install. Background Technology

[0002] Enameled agitators are devices used for mixing and stirring materials. The surfaces of the parts that come into direct contact with the materials are covered with an enamel coating. The main body is usually made of metal, while the enamel on the key working surfaces is made of vitreous material sintered at high temperatures, which can be tightly bonded to the metal surface. This structure allows the enamel coating to isolate the metal from the materials, effectively resisting corrosion from various acid and alkali media, and preventing metal ions from contaminating the materials. At the same time, the smooth surface of the enamel reduces material adhesion, making the equipment easier to clean. It is mainly used in chemical, pharmaceutical, food, and coating industries.

[0003] In existing enamel agitators, the connection between the agitator shaft and the equipment is mostly achieved by bolting. The traditional bolt fastening method makes alignment difficult, and repeated adjustments are required during installation to try to keep the agitator shaft and the connector coaxial. The alignment process is time-consuming and laborious. If the alignment is off during installation, it will often cause the thread teeth to bump and jam, and in severe cases, it will also cause thread damage, affecting the reliability of the connection and the service life of the components. Utility Model Content

[0004] The purpose of this utility model is to provide an easy-to-install enamel agitator to solve the problem that existing enamel agitators often use bolts for initial connection between the agitator shaft and the equipment, which makes alignment difficult under traditional bolt fastening methods.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] An easy-to-install enamel stirrer includes a stirring shaft and a connector. A positioning block is coaxially fixedly connected to the top end of the stirring shaft. An external thread is machined on the circumferential surface of the stirring shaft near the top end. A positioning groove adapted to the positioning block is opened at the bottom end of the connector. A locking screw sleeve is coaxially movably fitted on the surface of the connector. An internal thread adapted to the external thread of the stirring shaft is machined on the inner wall of the locking screw sleeve.

[0007] Preferably, the surface of the connector is provided with an axial groove, and the locking nut can slide up and down along the track of the axial groove.

[0008] Preferably, a limiting slip ring is coaxially fixedly connected to the inner wall of the locking screw sleeve, and the limiting slip ring is embedded in and adapted to the axial sliding groove.

[0009] Preferably, the positioning block has a cross-shaped structure, and the positioning groove is a matching cross-shaped groove.

[0010] Preferably, the top of the positioning block is provided with a bevel, so that the cross-sectional dimension of the top of the positioning block is smaller than the opening dimension of the positioning groove.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] 1. By using the positioning block and positioning groove, the insertion is immediately aligned, eliminating the need to repeatedly adjust the coaxiality of the stirring shaft and the connector. This directly saves the time-consuming alignment steps in traditional installation. Furthermore, the process of first aligning and then locking the thread avoids the collision, jamming, or even damage to the thread teeth caused by alignment deviations in traditional direct threaded connections. This reduces the precision requirements for installation, allowing even beginners to complete the installation quickly.

[0013] 2. Furthermore, by designing a cross-shaped structure and embedding it into the positioning groove inside the connector, compared to the traditional method of directly fitting the screw sleeve onto the threaded part of the stirring shaft for threaded connection, the contact area is larger and the force distribution is multi-directional, which can transmit the torque output by the reducer more evenly and avoid deformation or slippage of the screw sleeve caused by localized force concentration. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the connection state of a partial section of this utility model;

[0016] Figure 3 This is a cross-sectional structural diagram of the connector of this utility model;

[0017] Figure 4 This is a cross-sectional structural diagram of the locking screw sleeve of this utility model.

[0018] In the diagram: 1. Stirring shaft; 2. Positioning block; 3. Positioning groove; 4. Connector; 5. Axial slide groove; 6. Limiting slip ring; 7. Locking nut. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1 to 4 This utility model provides a technical solution.

[0021] An easy-to-install enamel-lined stirrer includes a stirring shaft 1 and a connector 4. The connector 4 is coaxially fixed to the output shaft of a reducer on a reactor reducer support. The fixing method can be a flange or other conventional connection method. A positioning block 2 is coaxially fixed to the top of the stirring shaft 1. An external thread is machined on the circumferential surface of the stirring shaft 1 near the top. A positioning groove 3 adapted to the positioning block 2 is opened at the bottom of the connector 4. A locking nut 7 is coaxially movably fitted on the surface of the connector 4. An internal thread adapted to the external thread of the stirring shaft 1 is machined on the inner wall of the locking nut 7. The connector 4 is movable in such a way that an axial sliding groove 5 is opened on the surface of the connector 4, and the locking nut 7 can slide up and down along the track of the axial sliding groove 5. By connecting the connector 4 with... The output shaft of the reducer is fixed coaxially. Then, the stirring shaft 1 passes through the lid from below, so that the positioning block 2 at the top is embedded in the positioning groove 3 of the connector 4, thus completing the alignment of the stirring shaft 1 and the connector 4. Finally, the locking sleeve 7 slides down along the axial groove 5 until it contacts the surface of the stirring shaft 1. The locking sleeve 7 is rotated so that its internal thread engages with the external thread of the stirring shaft 1, thus achieving a fixed connection between the stirring shaft 1 and the connector 4. By utilizing the cooperation between the positioning block 2 and the positioning groove 3, the alignment of the stirring shaft 1 can be quickly achieved during installation, avoiding thread jamming and damage caused by alignment deviation during direct thread connection, thus improving installation efficiency and connection stability. When the reducer is working, the connector 4 can drive the stirring shaft 1 to rotate synchronously.

[0022] The inner wall of the locking sleeve 7 is coaxially fixedly connected to a limiting slip ring 6. The limiting slip ring 6 is embedded in and adapted to the axial slide groove 5, which not only guides the locking sleeve 7 to slide stably along the axial direction, but also limits the stroke by the contact between the limiting slip ring 6 and the two ends of the axial slide groove 5, thus preventing it from falling off the connector 4.

[0023] The positioning block 2 has a cross-shaped structure, and the positioning groove 3 is a matching cross-shaped groove. This design can achieve precise centering through multi-directional cooperation, reduce installation offset, increase the torque transmission area, and reduce the force on the locking nut 7.

[0024] The top of the positioning block 2 is provided with a bevel, so that the cross-sectional dimension of the top of the positioning block 2 is smaller than the opening dimension of the positioning groove 3. This design can play a guiding role when the positioning block 2 is embedded into the positioning groove 3. Even if there is a slight deviation in the initial alignment, the bevel can guide the positioning block 2 to slide smoothly into the groove, avoiding the trouble of strict and precise alignment required for embedding because the top of the positioning block 2 and the opening dimension of the positioning groove 3 are perfectly matched, and significantly improving the ease of installation.

[0025] To further strengthen the connection, a through hole can be made on the limiting slip ring 6, and a threaded hole can be made at the corresponding position on the bottom wall of the axial slide groove 5. The cross-shaped positioning block 2 is embedded in the cross-shaped positioning groove 3 to ensure that the relative circumferential position of the stirring shaft 1 and the connector 4 remains unchanged when they are aligned. When the stirring shaft 1 and the connector 4 are aligned and the limiting slip ring 6 reaches the bottom of the slide groove, the locking nut 7 is simultaneously threaded into place. The locking nut 7 and the connector 4 can be fixed by passing a bolt through the through hole and screwing it into the threaded hole, which prevents the nut from loosening due to vibration and significantly improves the overall connection stability.

[0026] The specific steps of this solution are as follows: Align the connector 4 with the output shaft of the reducer on the reducer bracket of the reactor. Use a flange connection or other conventional adapter connection method to secure the connector 4 and the output shaft of the reducer with bolts or other fasteners. Ensure that the connector 4 has no radial offset or looseness, and that its axis coincides with the axis of the reducer output shaft. The operator, from below the reactor lid, slowly passes the stirring shaft 1 with the top end facing upward through the shaft hole in the lid, and continues to push the stirring shaft 1 upward until the cross-shaped positioning block 2 at the top end aligns with the cross-shaped positioning groove 3 at the bottom end of the connector 4. Slowly insert the stirring shaft 1 into the positioning groove 3 to achieve precise alignment between the stirring shaft 1 and the connector 4, ensuring that their axes are coaxial.

[0027] Hold the locking sleeve 7 on the surface of the connector 4 and slide it down along the axial groove 5 of the connector 4. At this time, the limiting slip ring 6 on the inner wall of the locking sleeve 7 will slide synchronously along the axial groove 5 until the bottom of the locking sleeve 7 contacts the external thread surface of the stirring shaft 1 near the top. Rotate the locking sleeve 7 clockwise so that the inner thread on the inner wall gradually engages with the external thread of the stirring shaft 1. Continue to rotate until there is no looseness and the sleeve can no longer rotate, thus completing the fixing of the stirring shaft 1 and the connector 4.

[0028] Further reinforce the connection, confirm that the limiting slip ring 6 has reached the bottom of the axial slide groove 5 and the locking sleeve 7 is threaded in place. At this time, the through hole on the limiting slip ring 6 is completely aligned with the threaded hole on the bottom wall of the axial slide groove 5. Take the matching bolt, pass it through the through hole of the limiting slip ring 6, and slowly screw it into the threaded hole on the bottom wall of the axial slide groove 5 until the bolt is tightened. Fix the locking sleeve 7 and the connector 4 with the bolt to prevent the sleeve from loosening due to vibration during subsequent operation.

[0029] During installation and inspection, gently push the stirring shaft 1 by hand to check for radial wobble. Confirm that the stirring shaft 1 and the connector 4 are aligned and secure. Manually or through a speed reducer, rotate the stirring shaft 1 to observe whether the rotation is smooth, without jamming or abnormal noise. Check again whether the locking sleeve 7 and the reinforcing bolts are tight and without any signs of loosening to ensure that the overall installation meets the usage requirements.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An easy-to-install enamel-lined stirrer, comprising a stirring shaft (1) and a connector (4), characterized in that: The top end of the stirring shaft (1) is coaxially fixedly connected to a positioning block (2). The circumferential surface of the stirring shaft (1) near the top end is machined with an external thread. The bottom end of the connector (4) is provided with a positioning groove (3) that matches the positioning block (2). The surface of the connector (4) is coaxially movably fitted with a locking screw sleeve (7). The inner wall of the locking screw sleeve (7) is machined with an internal thread that matches the external thread of the stirring shaft (1).

2. The enamel-lined stirrer for easy installation according to claim 1, characterized in that, The surface of the connector (4) is provided with an axial groove (5), and the locking nut (7) can slide up and down along the track of the axial groove (5).

3. The enamel-lined stirrer for easy installation according to claim 2, characterized in that, The inner wall of the locking nut (7) is coaxially fixedly connected to a limiting slip ring (6), which is embedded in and adapted to the axial groove (5).

4. The enamel-lined stirrer for easy installation according to claim 1, characterized in that, The positioning block (2) has a cross-shaped structure, and the positioning groove (3) is a matching cross-shaped groove.

5. The enamel-lined stirrer for easy installation according to claim 1, characterized in that, The top of the positioning block (2) is provided with a bevel, so that the cross-sectional dimension of the top of the positioning block (2) is smaller than the opening dimension of the positioning groove (3).

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