Aerator with impeller convenient to install

Abstract

An aerator facilitating installation of an impeller is provided with an inner ring and an outer ring, one of the inner ring and the outer ring is fixed to the impeller, the other is fixed to a rotating shaft of the impeller, and the inner ring is sleeved with the outer ring so that the inner ring and the outer ring can be located on the same axis. A clamping groove is fixed to one of the inner ring and the outer ring, an inserting piece inserted into the clamping groove is fixed to the other of the inner ring and the outer ring, and the shape of the clamping groove limits the inserting piece to be inserted into or withdrawn from the clamping groove only in the circumferential direction of the outer ring or the inner ring, so that after the inserting piece is inserted into the clamping groove, the degree of freedom of relative movement of the impeller and the rotating shaft in the axis direction is restrained by the clamping groove and the inserting piece. One of the inner ring and the outer ring is provided with a positioning hole, and the other is movably connected with a bolt which is inserted into the positioning hole to restrain the degree of freedom of relative rotation of the impeller and the rotating shaft. The aerator has the advantage of tool-free quick disassembly, compared with the prior art of flange connection, the trouble of adjusting the coaxiality is omitted, compared with an existing aerator, the efficiency of assembling the rotating shaft and the impeller in a farm is remarkably improved, and the installation time cost is reduced.

Description

Technical Field

[0001] The invention relates to an aerator for aquaculture, and in particular to the connection between a rotating shaft and an impeller of the aerator. Background Art

[0002] The main structure of the aerator for aquaculture includes an impeller that stirs the water surface and a rotating shaft that drives the impeller to rotate. For easy transportation, the impeller and the rotating shaft of the aerator need to be packed separately and assembled together when transported to the farm. The impeller and the rotating shaft of the existing aerator are connected by flanges, one of which is fixed on the impeller and the other is fixed on the rotating shaft, and the two flanges are locked and fixed by screws. It usually takes four screws to connect a pair of flanges. It takes an average of about 1-2 minutes per screw to install using manual or power tools. It will be faster for skilled workers. According to skilled workers, it takes 6 minutes to install four screws. If a farm has 50 aerators, it will need to tighten 200 screws (excluding the installation of other accessories), and it will take 5 hours just to connect the rotating shaft and the impeller. Therefore, the existing aerators have the problems of low assembly efficiency and high installation labor cost. Summary of the invention

[0003] The object of the present invention is to provide an aerator with an impeller that is easy to install, so as to improve the assembly efficiency of the aerator and reduce the installation time cost.

[0004] The present invention is implemented as follows: an aerator for convenient installation of an impeller comprises an impeller for stirring a water surface and a rotating shaft for driving the impeller to rotate, and in particular, an inner ring and an outer ring are provided, one of the inner ring and the outer ring is fixed on the rotating shaft and is located on the same axis as the rotating shaft, and the other is fixed on the impeller and is located on the same axis as the impeller, and the inner ring is sleeved in the outer ring so that the inner ring and the outer ring are located on the same axis; one of the inner ring and the outer ring is fixed with a slot, and the other is fixed with a plug-in inserted into the slot, and the shape of the slot restricts the plug-in to be inserted into and withdrawn from the slot only along the circumferential direction of the outer ring or the inner ring, so that when the plug-in is inserted into the slot, the freedom of relative movement of the impeller and the rotating shaft in the axial direction is constrained by the slot and the plug-in; one of the inner ring and the outer ring is opened with a positioning hole, and the other is movably connected with a latch, when the plug-in is inserted into the slot, the latch can just be inserted into the positioning hole, and when the latch is inserted into the positioning hole, the freedom of relative rotation of the impeller and the rotating shaft is constrained by the latch and the positioning hole.

[0005] As a best implementation, the latch is connected to a spring, and the latch is inserted into the positioning hole under the action of the spring.

[0006] As a best embodiment, the latch is connected to a handle.

[0007] The advantages of the present invention are: 1. The inner ring and the outer ring can be pre-fixed on the rotating shaft and the impeller in the factory. When assembling the aerator in the farm, it is only necessary to put the inner ring in the outer ring, slightly rotate the impeller or the rotating shaft by hand, so that the plug-in is inserted into the card slot and the pin is inserted into the positioning hole to complete the connection between the rotating shaft and the impeller. The entire connection process does not require the use of tools, and the impeller can be separated from the rotating shaft by just reverse operation, which has the advantages of tool-free and fast installation and disassembly; 2. As long as the inner ring is put in the outer ring, the rotating shaft and the impeller are naturally on the same axis, and compared with the flange connection method, the trouble of adjusting the coaxiality of the flange is omitted. Compared with the existing aerator, the present invention significantly improves the efficiency of assembling the rotating shaft and the impeller in the farm and reduces the installation time cost. Faced with a large number of aquaculture farms, an average of about one aerator is installed per acre of water surface. A large breeding province estimates that there are millions of aerators. The present invention can save about 80% of the installation and disassembly costs, effectively improve work efficiency, and reduce the amount of manpower and material resources that is difficult to estimate. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 is a schematic structural diagram of Embodiment 1 of the present invention; Figure 2 yes Figure 1 A magnified view of part A; Figure 3 is a schematic diagram of the separation of the rotating shaft and the impeller of the first embodiment; Figure 4 This is a schematic diagram of the plug-in being inserted into the slot. The impeller is omitted in this figure, and the outer ring is partially cut away; Figure 5 This is a schematic diagram of the plug-in exit slot. The impeller is omitted in this figure, and the outer ring is partially cut open; Figure 6 It is a schematic diagram of the latch and spring separated from the spring seat; Figure 7 is a structural diagram of Embodiment 2; Figure 8 yes Figure 7 A magnified view of part B; Fig. 9 yes Figure 8 Exploded diagram of Fig.10 is a schematic structural diagram of Embodiment 3; Fig.11 yes Fig.10 Enlarged view of part C; Fig.12 yes Fig.11 Exploded diagram of Fig.13 is a schematic structural diagram of Embodiment 4; Fig.14 yes Fig.13 A magnified view of the D portion; Fig.15 yes Fig.14 Exploded diagram. DETAILED DESCRIPTION

[0009] To facilitate understanding of the present invention, the present invention is described more fully below by way of examples. The examples provide embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in the examples. Embodiment 1

[0010] See also Figure 1 , Figure 2 The aerator for easy installation of impellers includes an impeller 1 for stirring the water surface and a rotating shaft 2 for driving the impeller to rotate. An inner ring 3 is fixed on the rotating shaft 2, and the inner ring 3 and the rotating shaft 2 are located on the same axis. An outer ring 4 is fixed on the impeller 1, and the outer ring 4 and the impeller 1 are located on the same axis. The inner ring 3 is sleeved in the outer ring 4, and the hole-axis cooperation of the two makes the inner ring 3 and the outer ring 4 located on the same axis, thereby ensuring that the impeller 1 and the rotating shaft 2 are located on the same axis. The inner ring 3 can be fixed to the rotating shaft 2 by conventional fixing methods such as key connection, screw connection, welding, integral molding, etc. The outer ring 4 can be fixed to the impeller 1 by conventional fixing methods such as screw connection, welding, integral molding, etc. See. Figure 3 The inner ring 3 is fixed with a slot 5, and the outer ring 4 is fixed with an insert 6 inserted into the slot 5. In this embodiment, four slots 5 of the same shape are evenly distributed along the circumference of the inner ring 3, and correspondingly, four inserts 6 of the same shape are evenly distributed along the circumference of the outer ring 4. Figure 3 , Figure 4 As shown, the shape of the slot 5 restricts the plug-in 6 to be inserted into and out of the slot 5 only along the circumferential direction of the inner ring 3, so that when the plug-in 6 is inserted into the slot 5, the freedom of relative movement of the inner ring 3 and the outer ring 4 in the axial direction is constrained by the slot 5 and the plug-in 6, that is, the freedom of relative movement of the impeller 1 and the rotating shaft 2 in the axial direction is constrained by the slot 5 and the plug-in 6. The fixing method of the slot 5 and the inner ring 3 can be, but not limited to, welding and integral molding. The fixing method of the plug-in 6 and the outer ring 4 can be, but not limited to, welding and integral molding. See Figure 3 The outer ring 4 is provided with a positioning hole 7, and the inner ring 3 is movably connected with a latch 8. When the plug-in 6 is inserted into the card slot 5, as shown in FIG. Figure 4 As shown, the latch 8 can just be inserted into the positioning hole 7. When the latch 8 is inserted into the positioning hole 7, the freedom of relative rotation of the inner ring 3 and the outer ring 4 around the axis is constrained by the latch 8 and the positioning hole 7, that is, the freedom of relative rotation of the impeller 1 and the rotating shaft 2 is constrained by the latch 8 and the positioning hole 7.

[0011] Since the freedom of relative movement of the impeller 1 and the rotating shaft 2 in the axial direction and the freedom of relative rotation around the axis are constrained, the impeller 1 and the rotating shaft 2 are connected as a whole through the inner ring 3 and the outer ring 4. When it is necessary to disassemble the impeller 1 and the rotating shaft 2, first Figure 4 Pull out the latch 8 from the positioning hole 7, and then rotate the impeller 1 or the shaft 2 slightly by hand to make the plug-in 6 Figure 5 As shown in the figure, the inner ring 3 and the outer ring 4 can be separated along the axial direction, thereby separating the impeller 1 and the rotating shaft 2 along the axial direction to complete the disassembly. The rotating shaft 2 and the impeller 1 can be assembled together by reversing the operation. No tools are required for the entire disassembly and assembly process.

[0012] As the best implementation, see also Figure 3 , Figure 6 In this embodiment, the latch 8 is connected to the spring 9, and the latch 8 and the spring 9 are installed in the spring seat 10, and the spring seat 10 is integrally formed with the inner ring 3. The spring 9 in this embodiment is a compression spring. Under the action of the spring 9, the latch 8 extends from the spring seat 10 and Figure 4 As shown, the latch 8 is inserted into the positioning hole 7. The latch 8 is connected with a handle 11, which is convenient for manually moving the latch 8. The handle 11 and the latch 8 can be integrally formed. Embodiment 2

[0013] See also Figures 7 to 9 , the card slot 5 of this embodiment is fixed on the outer ring 4, and the card slot 5 is integrally formed with the outer ring 4. The plug-in 6 inserted into the card slot 5 is fixed on the inner ring 3, and the plug-in 6 is integrally formed with the inner ring 3. In this embodiment, four card slots 5 with similar shapes but different sizes are evenly distributed along the circumferential direction of the outer ring 4, and correspondingly, four plug-ins 6 with similar shapes but different sizes are evenly distributed along the circumferential direction of the inner ring 3. Although the shapes of the four card slots 5 are different, the shape of each card slot 5 limits the corresponding plug-in 6 to be inserted into and out of the card slot 5 only along the circumferential direction of the outer ring 4.

[0014] The outer ring 4 is movably connected with a latch 8. The latch 8 is fixed on a spring 9. The spring 9 of this embodiment is a spring 9 sheet fixed on the outer ring 4. The latch 8 is inserted into the positioning hole 7 provided on the plug-in 6 under the action of the spring 9. It should be noted that since the plug-in 6 is fixed as a whole with the inner ring 3, the positioning hole 7 provided on the plug-in is equivalent to the positioning hole 7 provided on the inner ring 3. When the latch 8 is inserted into the positioning hole 7, the freedom of relative rotation of the inner ring 3 and the outer ring 4 around the axis is constrained by the latch 8 and the positioning hole 7, that is, the freedom of relative rotation of the impeller 1 and the rotating shaft 2 is constrained by the latch 8 and the positioning hole 7.

[0015] For details not described in this embodiment, please refer to the first embodiment. Embodiment 3

[0016] See also Figures 10 to 12The layout structure of the card slot 5 and the plug-in 6 of this embodiment is similar to that of the second embodiment, except that the positioning hole 7 of this embodiment is provided in the card slot 5, and the latch 8 and the spring 9 are installed in the plug-in 6. Since the card slot 5 is fixed as one body with the outer ring 4, the positioning hole 7 provided in the card slot 5 is equivalent to being provided on the outer ring 4. Since the plug-in 6 is fixed as one body with the inner ring 3, the installation of the latch 8 in the plug-in is equivalent to the connection between the latch 8 and the inner ring 3. The latch 8 is connected with a handle 11, which extends from a sliding hole 12 provided on the plug-in 6, so as to facilitate the manual manipulation of the latch 8. A bolt threadedly connected to the latch 8 can be used as the handle 11.

[0017] For details not described in this embodiment, please refer to Embodiment 1 and Embodiment 2. Embodiment 4

[0018] See also Figures 13 to 15 , this embodiment is equivalent to a mixture of the first three embodiments. The layout structure of the latch 8 and the positioning hole 7 of this embodiment is similar to that of the first embodiment, the layout structure of the slot 5 and the plug 6 is similar to that of the second embodiment, and the structure of the latch 8 connecting the handle 11 is similar to that of the third embodiment. The handle 11 extends from the sliding hole 13 provided on the spring seat 10. For matters not described in detail in this embodiment, please refer to the first to third embodiments.

[0019] It should be noted that the inner ring of the present invention can also be fixed on the impeller, and correspondingly, the outer ring is fixed on the shaft. For example, an end plate can be fixed on the end face of the shaft, the outer ring is fixed on one side of the end plate, and the inner ring is fixed on the top of the impeller and inserted into the outer ring 4.

[0020] It should be noted that the outer ring may not have an obvious ring shape in appearance. For example, Figure 2 The outer ring 4 shown may not protrude from the top of the impeller, but may be flush with the top of the impeller. In this case, although no protruding annular body is visible on the top of the impeller, the top of the impeller constitutes the outer ring described in the present invention.

[0021] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the protection scope of the invention patent. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. An aerator that is easy to install an impeller, comprising an impeller for stirring the water surface and a rotating shaft for driving the impeller to rotate, characterized in that: An inner ring and an outer ring are provided, and either the inner ring or the outer ring is fixed on the rotating shaft and is located on the same axis as the rotating shaft, and the other is fixed on the impeller and is located on the same axis as the impeller, and the inner ring is sleeved in the outer ring so that the inner ring and the outer ring are located on the same axis; either the inner ring or the outer ring is fixed with a slot, and the other is fixed with a plug-in inserted into the slot, and the shape of the slot restricts the plug-in to be inserted into and withdrawn from the slot only along the circumferential direction of the outer ring or the inner ring, so that when the plug-in is inserted into the slot, the freedom of relative movement of the impeller and the rotating shaft in the axial direction is constrained by the slot and the plug-in; either the inner ring or the outer ring is provided with a positioning hole, and the other is movably connected with a pin, and when the plug-in is inserted into the slot, the pin can just be inserted into the positioning hole, and when the pin is inserted into the positioning hole, the freedom of relative rotation of the impeller and the rotating shaft is constrained by the pin and the positioning hole.

2. The aerator for easy installation of impeller according to claim 1, characterized in that: The latch is connected to a spring, and the latch is inserted into the positioning hole under the action of the spring.

3. The aerator for easy installation of impeller as claimed in claim 2, characterized in that: The latch is connected with a handle.

Images