Stirrer with stirring blades convenient to replace

Abstract

The utility model discloses a stirrer with stirring blades convenient to replace, which comprises a stirring shaft and a plurality of groups of stirring blades, the stirring shaft is provided with a plurality of groups of transverse through insertion holes, and the plurality of groups of stirring blades are detachably connected with the plurality of groups of insertion holes in the stirring shaft through connecting bolts in a one-to-one correspondence manner; the stirring blade group comprises a fixing ring and stirring blades, the inner diameter of the fixing ring is larger than the shaft diameter of the stirring shaft, the two opposite sides of the fixing ring are each provided with a connecting hole, the two connecting holes penetrate through the ring wall of the fixing ring, and the axes of the two connecting holes coincide; the stirring blades are connected to the outer side of the fixing ring; the connecting bolt comprises a connecting bolt male head and a connecting bolt female head, and the connecting bolt male head and the connecting bolt female head are respectively provided with an external thread and an internal thread which are matched with each other. According to the utility model, the stirring blade group can be quickly disassembled and replaced without removing the connection between the stirring shaft and the rack, and the operation can be completed by one person.

Description

Technical Field

[0001] The utility model relates to the field of stirrers, in particular to a stirrer with stirring blades that are easy to replace. Background Art

[0002] Stirred reactor equipment is a product widely used in petrochemical, pharmaceutical, food and other industries. The core component of the stirred reactor is the rotating agitator. The stirring blades at the bottom of the stirring shaft of the traditional agitator are mostly fixed by bolts or welding, and the stirring blades in the middle of the stirring shaft are mostly connected and fixed by interference fit. With this connection method, when the entire set of stirring blades needs to be replaced, it is necessary to remove the stirring shaft from the frame together with the stirring shaft, and the stirring blades need to be removed using an impact device, which requires the cooperation of multiple people to complete the operation. Utility Model Content

[0003] In view of the above problems, the utility model provides an agitator with easy replacement of stirring blades. The stirring blade group can be quickly disassembled and replaced without releasing the connection between the stirring shaft and the frame, and the operation can be completed by a single person.

[0004] The technical solution of the utility model is as follows:

[0005] A stirrer with easily replaceable stirring blades, comprising a stirring shaft and a plurality of stirring blade groups;

[0006] The stirring shaft is provided with a plurality of groups of transversely penetrating insertion holes, and the plurality of groups of stirring blade groups are detachably connected to the plurality of groups of insertion holes on the stirring shaft through connecting bolts in a one-to-one correspondence;

[0007] The stirring blade group includes a fixing ring and a stirring blade. The inner diameter of the fixing ring is larger than the shaft diameter of the stirring shaft. A connecting hole is respectively provided on two opposite sides of the fixing ring. The two connecting holes penetrate the ring wall of the fixing ring and the axes coincide with each other. The stirring blade is connected to the outer side of the fixing ring.

[0008] The connecting bolt comprises a male connecting bolt head and a female connecting bolt head, and the male connecting bolt head and the female connecting bolt head are respectively provided with external threads and internal threads that match each other. The male connecting bolt head and the female connecting bolt head respectively pass through two connecting holes and extend into the internal threads of the jack and are tightened to connect the fixing ring to the stirring shaft.

[0009] In a further technical solution, at least one locking bolt is provided through the fixing ring. When the fixing ring is connected to the stirring shaft, the locking bolt is tightened inward to lock the relative position of the fixing ring and the stirring shaft to prevent the stirring blade group from loosening during the stirring process.

[0010] In a further technical solution, a clamping spring is provided at each of the two connecting holes on the inner side of the fixing ring, and a through hole is provided on the clamping spring; steps are provided on the male head of the connecting bolt and the female head of the connecting bolt, respectively, the inner diameter of the step is smaller than the aperture of the through hole, and the outer diameter of the step is larger than the aperture of the through hole.

[0011] When the male and female connecting bolts are tightened, the steps on the male and female connecting bolts will squeeze the two compression springs toward the inside of the fixing ring, thereby clamping the agitator shaft, further maintaining the stability of the relative position between the fixing ring and the agitator shaft, and preventing the agitator blade assembly from loosening during the agitation process.

[0012] In a further technical solution, the connecting hole is a countersunk hole, which can hide the head of the connecting bolt.

[0013] In a further technical solution, the stirring blade is detachably connected to the fixing ring, so that the stirring blade can be removed separately for maintenance or replacement.

[0014] The beneficial effects of the utility model are:

[0015] The stirring blade group of the utility model consists of a fixing ring and a stirring blade, and a plug hole is provided on the stirring shaft. The male head and the female head of the connecting bolt are passed through the connecting hole on the fixing ring and extended into the inner thread of the plug hole to be tightened, so that the stirring blade group is connected and fixed to the stirring shaft. When replacement or maintenance is needed, it is only necessary to loosen and remove the male head and the female head of the connecting bolt, without disassembling the stirring shaft and without the assistance of additional impact equipment. A single person can quickly complete the disassembly operation, thereby improving the replacement efficiency of the stirring blade group. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of a stirrer for facilitating replacement of stirring blades according to an embodiment of the utility model;

[0017] Figure 2 It is a schematic diagram of the structure of the stirring shaft according to the embodiment of the utility model;

[0018] Figure 3 It is a structural schematic diagram of the stirring blade group described in the embodiment of the utility model;

[0019] Figure 4 yes Figure 3 The enlarged view of point A in the middle;

[0020] Figure 5 It is a partial cross-sectional view of the stirring blade group described in the embodiment of the utility model.

[0021] Description of reference numerals:

[0022] 10. Stirring shaft; 11. Socket; 20. Stirring blade assembly; 21. Fixing ring; 22. Stirring blade; 23. Female connecting bolt; 24. Male connecting bolt; 25. Pressing spring; 26. Locking bolt; 27. Connecting hole. DETAILED DESCRIPTION

[0023] The embodiments of the present utility model will be further described below in conjunction with the accompanying drawings.

[0024] Example:

[0025] A stirrer with a stirring blade that is easy to replace, such as Figure 1 As shown, it includes a stirring shaft 10 and two groups of stirring blades 20;

[0026] like Figure 2 As shown, the stirring shaft 10 is provided with two groups of transversely penetrating holes 11, and the two groups of stirring blade groups 20 are detachably connected to the two groups of plug holes 11 on the stirring shaft 10 respectively through connecting bolts corresponding to each other;

[0027] like Figure 3-Figure 5 As shown, the stirring blade assembly 20 includes a fixing ring 21 and a stirring blade 22. The inner diameter of the fixing ring 21 is larger than the shaft diameter of the stirring shaft 10. A connecting hole 27 is respectively provided on opposite sides of the fixing ring 21. The two connecting holes 27 penetrate the ring wall of the fixing ring 21 and the axes coincide with each other. The stirring blade 22 is connected to the outer side of the fixing ring 21.

[0028] The connecting bolt includes a connecting bolt male head 24 and a connecting bolt female head 23, and the connecting bolt male head 24 and the connecting bolt female head 23 are respectively provided with external threads and internal threads that match each other. The connecting bolt male head 24 and the connecting bolt female head 23 respectively pass through the two connecting holes 27 and extend into the internal threads of the insertion hole 11 and are tightened to connect the fixing ring 21 to the stirring shaft 10.

[0029] In another embodiment, if Figure 5 As shown, two locking bolts 26 are provided through the fixing ring 21. When the fixing ring 21 is connected to the stirring shaft 10, the locking bolts 26 are tightened inward to lock the relative position of the fixing ring 21 and the stirring shaft 10 to prevent the stirring blade assembly 20 from loosening during the stirring process.

[0030] In another embodiment, if Figure 3-Figure 5 As shown, a clamping spring 25 is respectively provided at the two connecting holes 27 on the inner side of the fixing ring 21, and a through hole is provided on the clamping spring 25; a step is respectively provided on the connecting bolt male head 24 and the connecting bolt female head 23, the inner diameter of the step is smaller than the aperture of the through hole, and the outer diameter of the step is larger than the aperture of the through hole.

[0031] When the male connecting bolt 24 and the female connecting bolt 23 are tightened, the steps on the male connecting bolt 24 and the female connecting bolt 23 will squeeze the two clamping springs 25 toward the inside of the fixing ring 21, thereby clamping the stirring shaft 10, further maintaining the stability of the relative position between the fixing ring 21 and the stirring shaft 10, and preventing the stirring blade group 20 from loosening during the stirring process.

[0032] In another embodiment, if Figure 5 As shown, the connecting hole 27 is a countersunk hole, which can hide the head of the connecting bolt.

[0033] In another embodiment, the stirring blade 22 is detachably connected to the fixing ring 21, so that the stirring blade 22 can be removed separately for maintenance or replacement.

[0034] The working principle of the above technical solution is as follows:

[0035] The stirring blade group 20 of the utility model is composed of a fixing ring 21 and a stirring blade group 20, and a plug hole 11 is opened on the stirring shaft 10, and a connecting bolt male head 24 and a connecting bolt female head 23 are passed through the connecting hole 27 on the fixing ring 21 and extended into the internal thread of the plug hole 11 to be tightened, so that the stirring blade group 20 is connected and fixed to the stirring shaft 10. When replacement or maintenance is needed, it is only necessary to loosen and remove the connecting bolt male head 24 and the connecting bolt female head 23, without disassembling the stirring shaft 10 and without the assistance of additional impact equipment. A single person can quickly complete the disassembly operation, thereby improving the replacement efficiency of the stirring blade group 20.

[0036] The above-mentioned embodiments only express the specific implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A stirrer with easily replaceable stirring blades, comprising a stirring shaft and a plurality of stirring blade groups, characterized in that: The stirring shaft is provided with a plurality of groups of transversely penetrating insertion holes, and the plurality of groups of stirring blade groups are detachably connected to the plurality of groups of insertion holes on the stirring shaft in a one-to-one correspondence via connecting bolts; The stirring blade group includes a fixing ring and a stirring blade. The inner diameter of the fixing ring is larger than the shaft diameter of the stirring shaft. A connecting hole is respectively provided on two opposite sides of the fixing ring. The two connecting holes penetrate the ring wall of the fixing ring and the axes coincide with each other. The stirring blade is connected to the outer side of the fixing ring. The connecting bolt comprises a male connecting bolt head and a female connecting bolt head, and the male connecting bolt head and the female connecting bolt head are respectively provided with external threads and internal threads that match each other. The male connecting bolt head and the female connecting bolt head respectively pass through two connecting holes and extend into the internal threads of the jack and are tightened to connect the fixing ring to the stirring shaft.

2. The stirrer with easily replaceable stirring blades according to claim 1, characterized in that: At least one locking bolt is penetrated through the fixing ring.

3. The stirrer with easily replaceable stirring blades according to claim 1, characterized in that: A clamping spring is provided at each of the two connecting holes on the inner side of the fixing ring, and a through hole is provided on the clamping spring; steps are provided on the male head of the connecting bolt and the female head of the connecting bolt, respectively, the inner diameter of the step is smaller than the aperture of the through hole, and the outer diameter of the step is larger than the aperture of the through hole.

4. The stirrer with easily replaceable stirring blades according to claim 1, characterized in that: The connecting hole is a countersunk hole.

5. The stirrer with easily replaceable stirring blades according to claim 1, characterized in that: The stirring blade is detachably connected to the fixing ring.

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