Stirrer

Abstract

The utility model discloses a stirrer which comprises a barrel body, a stirring shaft, a tail supporting device and a top supporting device, the top supporting device is arranged at the upper end of the barrel body, the tail supporting device is arranged at the lower end of the barrel body, and the stirring shaft is arranged inside the barrel body. The upper end and the lower end of the stirring shaft are arranged on the top supporting device and the tail supporting device respectively, the stirring shaft and the tail supporting device are connected through a sleeve, a bearing is arranged at the lower end of the stirring shaft, and a plurality of inclined protrusions with the same rotating direction as the stirring shaft are machined on the outer circumferential face of the bearing. And inclined grooves with the same number and the same rotating direction as the stirring shaft are processed on the inner circumferential surface of the sleeve. And a tail equipment flange and a dismounting space do not need to be reserved, so that the equipment weight and cost are reduced.

Description

Technical Field

[0001] The utility model relates to the field of chemical stirring equipment structure, in particular to a stirrer. Background Art

[0002] In the prior art, the stirring shaft is a key component of the agitator, and its stability is related to the use of the equipment and the uniform mixing of the media in the agitator. In order to fully stir the medium, some agitators use a longer and thinner stirring shaft for stirring. However, the stirring shaft is very likely to swing and move during the stirring process, affecting the stirring effect.

[0003] In order to solve the above problems when the agitator shaft is long and thin, a tail support is often set at the tail of the agitator, and the support connecting frame on the tail support device is connected to the cylinder through a sleeve. At present, interference fit is adopted between the sleeve and the agitator shaft bearing, and the dimensional accuracy and welding deformation of the support sleeve are extremely high. It is difficult to disassemble and install, and it is very laborious to install. Personnel need to assist from the bottom. It is often necessary to reserve an equipment flange at the tail support. The equipment flange can realize the disassembly of the cylinder, and the cylinder is disassembled when the agitator shaft is disassembled. Not only does it increase the manufacturing cost of the equipment, but it also requires space to be reserved for on-site operations.

[0004] Therefore, it is necessary to design an agitator that can meet the support requirements and realize the rapid disassembly and assembly of the agitator shaft, thereby eliminating the need to set up an equipment flange. Utility Model Content

[0005] In order to solve the problems existing in the prior art, the utility model provides an agitator which can realize the rapid disassembly and assembly of the agitator shaft and the tail support device, and eliminates the use of the equipment flange.

[0006] In order to achieve the above-mentioned purpose, the technical solution adopted by the utility model is as follows: a stirrer, comprising:

[0007] A cylinder, a stirring shaft, a tail support device, and a top support device, wherein the top support device is arranged at the upper end of the cylinder, the tail support device is arranged at the lower end of the cylinder, the stirring shaft is arranged inside the cylinder, the upper and lower ends of the stirring shaft are arranged at the top support device and the tail support device respectively, and the stirring shaft and the tail support device are connected through a sleeve.

[0008] Optionally, the cylinder body is composed of an upper cylinder body, a middle cylinder body, and a lower cylinder body, and the lower cylinder body is fixed to the middle cylinder body by annular seam welding.

[0009] Optionally, the tail support device includes a sleeve and a support connector, and the support connector is welded and fixed to the sleeve.

[0010] Optionally, the supporting connectors are evenly distributed along the sleeve, and the number of the connectors is not less than 3.

[0011] Optionally, the cross-sectional shape of the supporting connecting member is square or circular, and the material of the supporting connecting member is polytetrafluoroethylene or homopolypropylene.

[0012] Optionally, the acute angle formed by the supporting connector and the cylinder is 60°-75°.

[0013] Optionally, a bearing is provided at the lower end of the stirring shaft, and the outer circumferential surface of the bearing is processed with a plurality of inclined protrusions with the same rotation direction as the stirring shaft, and the inner circumferential surface of the sleeve is processed with the same number of inclined grooves with the same rotation direction as the stirring shaft.

[0014] Optionally, the inclined protrusions or inclined grooves are evenly distributed along the circumferential surface, and the number is set to 3-5.

[0015] Optionally, there is a gap between the inclined protrusion and the corresponding inclined groove, and the gap size is 0.2mm-0.6mm.

[0016] Optionally, the angle between the inclined protrusion and the inclined groove and the axis of the stirring shaft is 30-40°.

[0017] Compared with the prior art, the utility model has the following advantages after adopting the above technical solution:

[0018] 1. Due to the use of clearance fit dimensions, it is easy to disassemble and assemble, and there is no need to reserve the equipment flange and disassembly space at the tail, which reduces the weight and cost of the equipment;

[0019] 2. The design adopts an inclined protrusion on the outer circumferential surface of the bearing and a corresponding inclined groove in the sleeve. After rotation, due to the inclination of the joint surface, a downward force will be generated on the stirring shaft and an upward force will be generated on the tail support sleeve, causing it to bite and prevent loosening. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0021] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0022] Figure 1 The lower cylinder of the prior art has a flange diagram of the equipment;

[0023] Figure 2 It is a schematic diagram of an embodiment of the present disclosure;

[0024] Figure 3 A top view of a stirring shaft bearing according to an embodiment of the present disclosure;

[0025] Figure 4 This is a front view of the stirring shaft bearing of the embodiment of the present disclosure;

[0026] Figure 5 This is a top view of the stirring shaft sleeve according to an embodiment of the present disclosure.

[0027] Figure 6 This is a front view of the stirring shaft sleeve of the embodiment of the present disclosure.

[0028] Among them, 1-top support device; 2-cylinder; 21-upper cylinder; 22-middle cylinder; 23-lower cylinder; 3-agitation shaft; 4-tail support device; 41-support connector; 42-sleeve; 43-bearing; 5-equipment flange; 6-inclined protrusion; 7-inclined groove. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0030] In the present invention, unless otherwise clearly defined, the words "set", "install", "connect" and the like should be understood in a broad sense, for example, they can be directly connected or indirectly connected through an intermediate medium; they can be fixedly connected or detachably connected or integrally formed; they can be mechanically connected; they can be the internal connection of two elements or the interaction relationship between two elements. Those skilled in the art can reasonably determine the specific meanings of the above words in the present invention in combination with the specific content of the technical solution.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0032] refer to Figure 1, which is the prior art mentioned in this scheme. The main difference between this embodiment and the prior art is that the equipment flange 5 is cancelled. This embodiment: The utility model proposes an agitator, which is composed of a top supporting device 1, a cylinder 2, a stirring shaft 3, and a tail supporting device 4. The top supporting device 1 is arranged at the upper end of the cylinder 2, that is, the upper cylinder 1. The top supporting device 1 and the stirring shaft 3 are interference fit. The tail supporting device 4 is arranged at the lower end of the cylinder 2. The stirring shaft 3 is arranged inside the cylinder 2. The upper and lower ends of the stirring shaft 3 are respectively arranged on the top supporting device 1 and the tail supporting device 4. The stirring shaft 3 and the tail supporting device 4 are connected by a sleeve 42.

[0033] The cylinder body is composed of an upper cylinder body 21, a middle cylinder body 22, and a lower cylinder body 21. The lower cylinder body and the middle cylinder body are fixed by annular seam welding, so there is no need to set an equipment flange 5 between the middle cylinder body 22 and the lower cylinder body 21. The tail support device includes a sleeve 42 and a support connector 41, and the support connector 41 is welded and fixed to the sleeve 42. The support connectors 41 are evenly distributed along the sleeve 42, and the number of support connectors 41 is not less than three, ensuring that the axis of the sleeve 42 is in a straight line with the axis of the stirring shaft 3 and the axis of the cylinder body 2, thereby reducing the deflection and wear of the stirring shaft 3 during rotation.

[0034] The cross-sectional shape of the support connector 41 is square or circular, and the material of the support connector 41 is polytetrafluoroethylene or homopolypropylene, and the support structure is more stable and corrosion-resistant. The acute angle formed by the support connector 41 and the cylinder 2 is 60°-75°. If the angle is too large, the upward support force of the support connector 41 on the stirring shaft 3 will be greatly reduced; if the angle is too small, the size of the stirring shaft 3 is greatly limited.

[0035] A bearing 43 is provided at the lower end of the stirring shaft 3. The outer circumferential surface of the bearing 43 is processed with a number of inclined protrusions 6 with the same rotation direction as the stirring shaft 3. The inner circumferential surface of the sleeve 42 is processed with the same number of inclined grooves 7 with the same rotation direction as the stirring shaft 3. The inclined protrusions 6 or inclined grooves 7 are evenly distributed along the circumferential surface, and the number is set to 3-5; if the number of inclined protrusions 6 and corresponding inclined grooves 7 is too large or too small, it will affect the ability to transmit torque between the two, and affect the size and angle of the protrusions and grooves. There is a gap between the inclined protrusions 6 and the corresponding inclined grooves 7, and the gap size is 0.2mm-0.6mm, which is convenient for the disassembly and assembly of the two. If the gap is too large, the stirring shaft 3 cannot rotate well along the axis, and there is a large gap with the sleeve 42, which aggravates the wear between the two. The angle between the inclined protrusions 6 and the inclined grooves 7 and the axis of the stirring shaft 3 is 15°-20°.

[0036] It should be noted that, in this article, "upper end" and "lower end" are relative terms. Moreover, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusions.

[0037] The above are only specific embodiments of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to these embodiments herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A stirrer, characterized in that: include: A cylinder, a stirring shaft, a tail support device, and a top support device, wherein the top support device is arranged at the upper end of the cylinder, the tail support device is arranged at the lower end of the cylinder, the stirring shaft is arranged inside the cylinder, the upper and lower ends of the stirring shaft are arranged at the top support device and the tail support device respectively, and the stirring shaft and the tail support device are connected through a sleeve.

2. A stirrer according to claim 1, characterized in that: The cylinder body is composed of an upper cylinder body, a middle cylinder body and a lower cylinder body, and the lower cylinder body is fixed to the middle cylinder body by annular seam welding.

3. A stirrer according to claim 1, characterized in that: The tail support device comprises a sleeve and a support connector, and the support connector is welded and fixed to the sleeve.

4. A stirrer according to claim 3, characterized in that: The supporting connectors are evenly distributed along the sleeve, and the number of the connectors is no less than 3.

5. A stirrer according to claim 3, characterized in that: The cross-sectional shape of the supporting connection piece is square or circular, and the material of the supporting connection piece is polytetrafluoroethylene or homopolypropylene.

6. A stirrer according to claim 4, characterized in that: The acute angle formed by the supporting connecting piece and the cylinder is 60°-75°.

7. A stirrer according to claim 1, characterized in that: A bearing is arranged at the lower end of the stirring shaft, and a plurality of inclined protrusions with the same rotation direction as the stirring shaft are processed on the outer circumference surface of the bearing, and the same number of inclined grooves with the same rotation direction as the stirring shaft are processed on the inner circumference surface of the sleeve.

8. A stirrer according to claim 7, characterized in that: The inclined protrusions or inclined grooves are evenly distributed along the circumferential surface, and the number is set to 3-5.

9. A stirrer according to claim 8, characterized in that: There is a gap between the inclined protrusion and the corresponding inclined groove, and the size of the gap is 0.2mm-0.6mm.

10. A stirrer according to claim 9, characterized in that: The angle between the inclined protrusion and the inclined groove and the axis of the stirring shaft is 30-40°.

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