Sliding bearing spherical locking sleeve device for high-temperature dry-grinding-resistant magnetic drive pump

Abstract

The sliding bearing spherical locking sleeve device for the high-temperature dry-grinding-resistant magnetic drive pump comprises a first sleeve and a second sleeve, a connecting mechanism is arranged between the first sleeve and the second sleeve, the connecting mechanism comprises a clamping rod, a connecting hole is formed in the side wall of the second sleeve, and the clamping rod is connected with the connecting hole. The top of the second sleeve is fixedly connected with a connecting plate, the top of the connecting plate is fixedly connected with a rotating pipe, the interior of the rotating pipe is in threaded connection with a screw rod, and a threaded hole is formed in the top of the first sleeve. And through the adaptive design of a clamping rod and a connecting hole, the first sleeve and the second sleeve can be rapidly and preliminarily positioned, then the sleeves are tightly fixed through threaded connection of a threaded rod in a rotating pipe and a threaded hole, and it is ensured that the device is stably connected and is not prone to loosening under the high-temperature and dry-wear-resistant working condition.

Description

Technical Field

[0001] This utility model relates to the technical field of sleeve devices, specifically a spherical locking sleeve device for sliding bearings in high-temperature dry-wear resistant magnetic pumps. Background Technology

[0002] A magnetic drive pump mainly consists of several parts, including a pump head, a magnetic drive unit, a motor, and a base. The magnetic drive unit comprises an outer magnetic rotor, an inner magnetic rotor, and a non-magnetic isolation sleeve. When the motor drives the outer magnetic rotor to rotate via a coupling, the magnetic field penetrates the air gap and the non-magnetic isolation sleeve, causing the inner magnetic rotor, connected to the impeller, to rotate synchronously. This achieves contactless synchronous power transmission, transforming the easily leaky dynamic seal structure into a zero-leakage static seal structure. During operation, the magnetic drive pump requires the use of sliding bearings, which are installed using sleeves to limit their movement.

[0003] According to the authorized patent "CN217842098U" for a spherical locking sleeve device for a sliding bearing of a high-temperature dry-wear resistant magnetic pump, the device includes a first sleeve and a second sleeve. One end of the first sleeve is fixedly connected to a bushing, and the end of the bushing away from the first sleeve is fixedly connected to a second sleeve. The bushing consists of three first connecting sleeves and two second connecting sleeves. The three first connecting sleeves are equidistantly arranged, and a second connecting sleeve is fixedly connected between any two connected first connecting sleeves. By setting the first and second connecting sleeves, the bushing adopts a double interference fit connection, which can avoid axial torsion and radial displacement of the shaft, thereby improving the stability of the shaft rotation. As the magnetic pump continues to operate and the shaft rotates at high speed, the bushing will expand due to heat. The expanded bushing clamps the shaft more tightly, further reducing mechanical vibration caused by shaft rotation, reducing noise during operation, and improving the stability of the magnetic pump operation.

[0004] The aforementioned technical solutions, during use, mostly employ simple snap-fit ​​or welding methods for their connection structures. Snap-fit ​​connections are prone to loosening due to thermal expansion and contraction of materials under high-temperature environments. Under long-term vibration and media erosion, the wear of the snap-fit ​​is accelerated, significantly reducing connection stability. While welding connections can guarantee a certain connection strength, they lack adjustability, making it difficult to adapt to the installation and usage requirements under different working conditions. Furthermore, once cracks appear at the welded parts, repair is difficult and seriously affects the normal operation of the equipment.

[0005] Therefore, this utility model provides a spherical locking sleeve device for sliding bearings of high-temperature dry-wear resistant magnetic pumps. Utility Model Content

[0006] To address the shortcomings of existing technologies, this utility model provides a spherical locking sleeve device for sliding bearings in high-temperature dry-wear resistant magnetic pumps, thereby solving the aforementioned problems.

[0007] To achieve the above objectives, this utility model is implemented through the following technical solution: a spherical locking sleeve device for a sliding bearing of a high-temperature dry-wear resistant magnetic pump, comprising a first sleeve and a second sleeve, wherein a connecting mechanism is provided between the first sleeve and the second sleeve;

[0008] The connecting mechanism includes a snap-fit ​​rod, a connecting hole is provided in the side wall of the second sleeve, a connecting plate is fixedly connected to the top of the second sleeve, a rotating tube is fixedly connected to the top of the connecting plate, a first screw is threadedly connected to the inside of the rotating tube, and a threaded hole is provided in the top of the first sleeve.

[0009] Preferably, the first sleeve and the second sleeve are provided with a positioning mechanism. The positioning mechanism includes a threaded tube, the inside of which is threaded with a second screw. A push rod is fixedly connected to the outside of the second screw. A return spring is fixedly connected to the inner wall of the first sleeve and the second sleeve, and a snap-fit ​​cover is fixedly connected to the outside of the return spring.

[0010] Preferably, the first sleeve and the second sleeve have the same specifications, and the locking rods are symmetrically distributed on the outside of the first sleeve.

[0011] Preferably, the number of the snap-fit ​​rods is the same as the number of the connecting holes, and the snap-fit ​​rods are adapted to the connecting holes.

[0012] Preferably, the connecting plates are symmetrically distributed on the top outer side of the second sleeve, and the first screw is adapted to the threaded hole.

[0013] Preferably, the threaded tubes are symmetrically distributed on the outside of the first sleeve and the second sleeve, and the push rod passes through the inside of the first sleeve and the second sleeve.

[0014] Preferably, the return springs are symmetrically distributed on the outside of the snap-fit ​​cover, and the snap-fit ​​cover is movably connected inside the first sleeve and the second sleeve through the return springs.

[0015] Preferably, the snap-fit ​​covers are symmetrically distributed inside the first sleeve and the second sleeve, and the push rod is movably connected to the outside of the snap-fit ​​covers.

[0016] Beneficial effects

[0017] Compared with the prior art, the present invention has the following advantages:

[0018] (1) The sliding bearing ball locking sleeve device for the high temperature dry wear magnetic pump has a matching design between the snap rod and the connecting hole in the connection mechanism, which enables the No. 1 sleeve and the No. 2 sleeve to be quickly and initially positioned. Then, by rotating the screw in the tube and the threaded connection of the threaded hole, the sleeves are tightly fixed, ensuring that the device is firmly connected under high temperature dry wear conditions and is not easy to loosen.

[0019] (2) The high-temperature dry wear resistant magnetic pump uses a sliding bearing ball locking sleeve device. In the positioning mechanism, rotating the threaded tube drives the screw and push rod to move, which can push the snap-fit ​​cover to accurately position the internal components. The reset spring can automatically reset the snap-fit ​​cover after the components are installed and adjusted, maintain the stability of the internal structure of the device, and improve the reliability of operation. Attached Figure Description

[0020] Figure 1 This is a perspective view of the present invention;

[0021] Figure 2 This is a schematic diagram of the structure of this utility model when unfolded;

[0022] Figure 3 This is a schematic diagram of the outer side of the No. 2 sleeve of this utility model;

[0023] Figure 4 This is a schematic diagram of the outer side of the positioning mechanism of this utility model.

[0024] In the diagram: 1. Sleeve No. 1; 2. Sleeve No. 2; 3. Connecting mechanism; 31. Clamping rod; 32. Connecting hole; 33. Connecting plate; 34. Rotating tube; 35. Screw No. 1; 36. Threaded hole; 4. Positioning mechanism; 41. Threaded tube; 42. Screw No. 2; 43. Push rod; 44. Return spring; 45. Clamping cover. Detailed Implementation

[0025] 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.

[0026] Please see Figure 1-4 A ball-shaped locking sleeve device for sliding bearings of high-temperature dry wear resistant magnetic pumps includes a first sleeve 1 and a second sleeve 2, with a connecting mechanism 3 provided between the first sleeve 1 and the second sleeve 2.

[0027] The connecting mechanism 3 includes a snap-fit ​​rod 31, a connecting hole 32 is provided in the side wall of the second sleeve 2, a connecting plate 33 is fixedly connected to the top of the second sleeve 2, a rotating tube 34 is fixedly connected to the top of the connecting plate 33, a screw 35 is threadedly connected inside the rotating tube 34, and a threaded hole 36 is provided at the top of the first sleeve 1.

[0028] Furthermore: Sleeve 1 and Sleeve 2 have the same specifications. The snap-fit ​​rods 31 are symmetrically distributed on the outside of Sleeve 1. The number of snap-fit ​​rods 31 and connecting holes 32 are the same, and the snap-fit ​​rods 31 and connecting holes 32 are compatible. The connecting plates 33 are symmetrically distributed on the top outside of Sleeve 2. The screw 35 is compatible with the threaded hole 36.

[0029] It should be noted that the connecting mechanism 3 is a key component for achieving a stable connection between sleeve 1 and sleeve 2. The locking rods 31 are symmetrically distributed on the outside of sleeve 1, and their number matches the number of connecting holes 32 on the side wall of sleeve 2, ensuring mutual compatibility. This design allows the locking rods 31 to be precisely inserted into the connecting holes 32 during initial docking of sleeve 1 and sleeve 2, completing the initial positioning and laying the foundation for subsequent tightening operations.

[0030] Specifically, the connecting plates 33 on the top of sleeve 2 are symmetrically distributed, serving not only as support but also as a stable platform for the installation of the rotating tube 34. The internal thread of the rotating tube 34 mates with the screw 35, which in turn fits into the threaded hole 36 on the top of sleeve 1. When the rotating tube 34 is rotated, the screw 35 is screwed into the threaded hole 36 by the thread. As the screw 35 is continuously screwed in, the connection between sleeve 1 and sleeve 2 becomes increasingly tight. Compared to traditional snap-fit ​​or welded connections, this threaded connection method offers stronger tightness and adjustability, allowing for flexible adjustment of the connection tightness according to actual usage needs. This ensures that the sleeve device maintains a stable connection even under complex working conditions such as high temperature and vibration, effectively preventing equipment failure due to loose connections.

[0031] As a further improvement of this utility model, a positioning mechanism 4 is provided inside the first sleeve 1 and the second sleeve 2. The positioning mechanism 4 includes a threaded tube 41, and a second screw 42 is threadedly connected inside the threaded tube 41. A push rod 43 is fixedly connected to the outside of the second screw 42. A return spring 44 is fixedly connected to the inner wall of the first sleeve 1 and the second sleeve 2. A snap-fit ​​cover 45 is fixedly connected to the outside of the return spring 44.

[0032] Furthermore: the threaded tubes 41 are symmetrically distributed on the outside of the first sleeve 1 and the second sleeve 2, the push rod 43 passes through the inside of the first sleeve 1 and the second sleeve 2, the return springs 44 are symmetrically distributed on the outside of the snap-fit ​​cover 45, and the snap-fit ​​cover 45 is movably connected to the inside of the first sleeve 1 and the second sleeve 2 through the return springs 44. The snap-fit ​​cover 45 is symmetrically distributed inside the first sleeve 1 and the second sleeve 2, and the push rod 43 is movably connected to the outside of the snap-fit ​​cover 45.

[0033] Specifically: When internal components need to be positioned, rotating screw 42 moves push rod 43, pushing snap-fit ​​cover 45 outward against the elastic force of return spring 44. Snap-fit ​​cover 45 then firmly holds the internal components in place, achieving precise positioning. Return springs 44 are symmetrically distributed on the outside of snap-fit ​​cover 45. After positioning, they provide restoring force, allowing snap-fit ​​cover 45 to automatically reset when not in use, facilitating future operations. This positioning method is characterized by its ease of operation and precise positioning. Furthermore, the inclusion of return springs 44 prevents fatigue damage to snap-fit ​​cover 45 caused by prolonged stress, extending the service life of positioning mechanism 4. During the operation of the high-temperature dry-wearing magnetic pump, internal components are affected by various factors such as high temperature, pressure, and wear. Positioning mechanism 4 ensures that these components are always in the correct position, guaranteeing stable operation and efficient work of the magnetic pump.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

[0035] Working principle: During the operation of the ball locking sleeve device for sliding bearings of high temperature dry wear resistant magnetic pump, the connecting mechanism 3 and the positioning mechanism 4 work together to achieve stable connection and positioning of the sleeve.

[0036] The connecting mechanism 3 is mainly responsible for connecting and fixing sleeve 1 and sleeve 2. First, sleeve 1 is brought close to sleeve 2, so that the symmetrically distributed snap-fit ​​rods 31 on the outside of sleeve 1 are aligned with the connecting holes 32 on the side wall of sleeve 2. Since the snap-fit ​​rods 31 and connecting holes 32 are the same in number and mutually compatible, the snap-fit ​​rods 31 can be easily inserted into the connecting holes 32. Next, the rotating tube 34 at the top of sleeve 2 is rotated, and the screw 35 connected to the thread inside the rotating tube 34 rotates accordingly. Since the screw 35 is compatible with the threaded hole 36 at the top of sleeve 1, the screw 35 gradually screws into the threaded hole 36 during rotation. As the screw 35 screws in, sleeve 1 and sleeve 2 are tightly connected together, completing the initial fixing.

[0037] The positioning mechanism 4 ensures precise positioning of the internal structures of sleeve 1 and sleeve 2. Threaded tubes 41, symmetrically distributed on the outside of sleeves 1 and 2, have a threaded screw 42 internally connected to them. When this screw rotates, it drives a push rod 43 fixedly connected to the outside. Since the push rod 43 traverses the interior of sleeves 1 and 2 and is movably connected to the outside of the snap-fit ​​cover 45, its movement pushes the snap-fit ​​cover 45 to slide inside the sleeves 1 and 2. Return springs 44 are symmetrically distributed on the outside of the snap-fit ​​cover 45. When the push rod 43 pushes the snap-fit ​​cover 45, the return springs 44 are compressed. When positioning needs to be released, the screw 42 is rotated in the opposite direction, the push rod 43 loses its thrust, and under the elastic restoring force of the return springs 44, the snap-fit ​​cover 45 returns to its original position, thus achieving the positioning and depositioning operations.

[0038] In practical use, the No. 1 sleeve 1 and the No. 2 sleeve 2 are first connected and fixed by the connecting mechanism 3, and then the internal structure is precisely positioned by the positioning mechanism 4 to ensure that the ball locking sleeve device of the sliding bearing for the high temperature dry wear resistant magnetic pump remains stable during operation and meets the usage requirements of working environments such as high temperature and dry wear resistance.

[0039] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0040] 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. A sliding bearing ball locking sleeve device for high temperature dry grinding magnetic pumps, comprising a first sleeve (1) and a second sleeve (2), characterized in that: The first sleeve (1) and the second sleeve (2) are provided with a connecting mechanism (3); The connecting mechanism (3) comprises a clamping rod (31), a connecting hole (32) is formed in the side wall of the second sleeve (2), the top of the second sleeve (2) is fixedly connected with a connecting plate (33), the top of the connecting plate (33) is fixedly connected with a rotating pipe (34), the inside of the rotating pipe (34) is threadedly connected with a first screw rod (35), and the top of the first sleeve (1) is provided with a threaded hole (36).

2. The high temperature dry gas compressor magnetic drive pump sliding bearing ball lock sleeve device of claim 1 wherein: The first sleeve (1) and the second sleeve (2) are provided with a positioning mechanism (4), the positioning mechanism (4) comprises a threaded pipe (41), the inside of the threaded pipe (41) is threadedly connected with a second screw rod (42), the outer side of the second screw rod (42) is fixedly connected with a push rod (43), the inner wall of the first sleeve (1) and the second sleeve (2) is fixedly connected with a reset spring (44), and the outer side of the reset spring (44) is fixedly connected with a clamping cover (45).

3. The high temperature dry gas compressor magnetic drive pump sliding bearing ball lock sleeve device of claim 1 wherein: The first sleeve (1) and the second sleeve (2) are of the same specification, and the clamping rods (31) are symmetrically distributed on the outer side of the first sleeve (1).

4. The high temperature dry gas compressor magnetic drive pump sliding bearing ball lock sleeve device of claim 1 wherein: The number of the clamping rods (31) is the same as that of the connecting holes (32), and the clamping rods (31) are matched with the connecting holes (32).

5. The high temperature dry gas compressor magnetic drive pump sliding bearing ball lock sleeve device of claim 1 wherein: The connecting plates (33) are symmetrically distributed on the top outer side of the second sleeve (2), and the first screw rod (35) is matched with the threaded hole (36).

6. The high temperature dry gas compressor magnetic drive pump sliding bearing ball lock sleeve device of claim 2 wherein: The threaded pipes (41) are symmetrically distributed on the outer side of the first sleeve (1) and the second sleeve (2), and the push rod (43) transversely penetrates the inside of the first sleeve (1) and the second sleeve (2).

7. The high temperature dry gas compressor magnetic drive pump sliding bearing ball lock sleeve device of claim 2 wherein: The reset springs (44) are symmetrically distributed on the outer side of the clamping cover (45), and the clamping cover (45) is movably connected in the inside of the first sleeve (1) and the second sleeve (2) through the reset spring (44).

8. The high temperature dry gas compressor magnetic drive pump sliding bearing ball lock sleeve device of claim 2 wherein: The clamping cover (45) is symmetrically distributed in the inside of the first sleeve (1) and the second sleeve (2), and the push rod (43) is movably connected on the outer side of the clamping cover (45).

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