Flexible mounting structure of rotating shaft

Abstract

The utility model provides a flexible mounting structure for a rotating shaft, belongs to the technical field of ecological toilets, and aims to solve the problem that in the prior art, a whole stirring device can not work normally due to the deflection phenomenon caused by machining errors when a stirring shaft is mounted. The mounting structure is used for connecting the stirring shaft and the driving shaft and comprises a connecting piece, one end of the connecting piece is connected with one end of the stirring shaft, the other end of the connecting piece is provided with an inserting column, one end of the driving shaft is provided with an inserting groove matched with the inserting column in an inserting mode, and the diameter of the inserting groove is larger than that of the inserting column. According to the utility model, the driving shaft and the stirring shaft are connected through the slot and the insertion column, and the gap is formed between the insertion column and the slot, namely the flexible connection is realized, so that the coaxiality between the driving shaft and the stirring shaft can be finely adjusted within the range of the gap, and the service life of the stirring shaft is prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of ecological toilets, and in particular relates to a flexible installation structure of a rotating shaft. Background Art

[0002] Ecological toilets are a type of environmentally friendly toilet that does not pollute the environment, fully utilizes various resources, and emphasizes the concepts and functions of self-purification of pollutants and resource recycling. Currently, the most widely used ecological toilets are those that use microbial strains to decompose feces. These strains utilize their growth and reproduction to biodegrade usable macromolecular organic compounds in feces and convert them into bacterial biomass. They competitively inhibit and kill pathogenic microorganisms in feces, and adsorb, degrade, and transform odorous substances produced in feces, achieving harmless and resource-based treatment. These toilets achieve zero emissions and cause no pollution to the environment.

[0003] Currently, when feces are fermented biologically, a stirring device is used to stir the feces. The stirring device includes a stirring shaft and stirring blades. When installing the stirring shaft, one end of the stirring shaft is first installed in the fermentation chamber through a bearing, and then the other end of the stirring shaft is docked on the drive shaft on the fermentation chamber (the drive shaft is used to drive the stirring shaft to rotate). However, due to processing errors, the stirring shaft will inevitably have a certain degree of deflection when it is actually installed. The larger the volume of the fermentation chamber, the longer the stirring shaft body, which will lead to a greater deflection of the bottom end of the stirring shaft after it is fixed. As a result, the stirring shaft may become stuck due to the above-mentioned deflection, which may cause the entire stirring device to malfunction. Utility Model Content

[0004] In light of this, the present invention provides a flexible shaft mounting structure to address the existing problem of the agitator shaft being skewed during installation due to machining errors. The larger the fermentation chamber volume, the longer the agitator shaft, which in turn increases the deflection at the bottom of the agitator shaft after it is secured. This deflection can cause the agitator shaft to become stuck, potentially rendering the entire agitator device inoperable.

[0005] The technical solutions adopted in this utility model are as follows:

[0006] A flexible mounting structure for a rotating shaft, which is used to connect a stirring shaft and a driving shaft. The mounting structure includes a connecting piece, one end of which is connected to one end of the stirring shaft, and the other end of the connecting piece is provided with a plug post. One end of the driving shaft is provided with a slot that is plugged into the plug post, and the diameter of the slot is larger than the diameter of the plug post.

[0007] In this technical solution, it should be noted that a stirring blade is provided on the side wall of the stirring shaft, the stirring blade is spiral-shaped, and the stirring shaft is a hollow structure. When installing the stirring shaft, first, one end of the stirring shaft is installed on the side wall of the fermentation bin through the second bearing, and then the slot of the drive shaft is docked with the plug post to connect the stirring shaft to the drive shaft, and finally the drive shaft is installed on the stirring bin. The drive shaft is driven by an external motor to drive the stirring shaft to rotate and stir the feces in the fermentation bin. The axial force between the drive shaft and the stirring shaft is transmitted through the friction force between the plug post and the slot, that is, although the diameter of the slot is larger than the diameter of the plug post and there is a gap between the two, the end of the plug post will still contact the slot to provide force transmission. Secondly, in the utility model, since the drive shaft and the stirring shaft are connected through the slot and the plug post, there is a gap between the plug post and the slot, which is a flexible connection, so that the coaxiality between the drive shaft and the stirring shaft can be fine-tuned within the gap range, thereby improving the service life of the stirring shaft.

[0008] Preferably, the diameter difference between the slot and the pin is less than 0.5 mm.

[0009] In this technical solution, it should be noted that in sheet metal welded structural parts, taking into account the deformation of 2mm, the diagonal error value of the assembly is within the range of 2mm, and the specific diameter difference is calculated to be less than 0.5mm.

[0010] Preferably, the connecting part includes a plug-in part and a limiting part located at one end of the plug-in part, the plug-in part is inserted into the stirring shaft, the limiting part is located outside the stirring shaft, and the diameter of the limiting part is larger than the diameter of the stirring shaft, and the plug is arranged at one end of the limiting part away from the plug-in part.

[0011] In this technical solution, it should be noted that the plug-in portion is cylindrical and is used to be inserted into the stirring shaft to realize the connection between the connector and the stirring shaft. The diameter of the limiting portion is larger than the diameter of the stirring shaft and is stuck on the outside of the stirring shaft. In this solution, the limiting portion and the plug-in portion are set to realize the detachable connection between the stirring shaft and the connecting piece and the driving shaft. During the specific installation, after one end of the stirring shaft is installed on the fermentation bin, the plug-in portion of the connecting piece is inserted into the stirring shaft, and then the slot on the driving shaft is docked with the column on the connecting piece, and the driving shaft is installed on the stirring bin.

[0012] Preferably, a limiting sleeve is provided on the driving shaft, the end of the limiting sleeve contacts the end of the limiting part, a first screw hole is provided on the limiting sleeve, and a second screw hole matching the first screw hole is provided on the driving shaft, and the limiting sleeve is fixed to the driving shaft by a bolt inserted into the first screw hole and the second screw hole.

[0013] In this technical solution, it should be noted that the limit sleeve is used to limit the connecting piece to ensure that the drive shaft and the stirring shaft do not get loose; when the connecting piece connects the drive shaft and the stirring shaft, the limit sleeve is connected to the drive shaft through a bolt. At this time, the limit sleeve presses the connecting piece tightly, thereby ensuring that the drive shaft and the stirring shaft do not get loose.

[0014] Preferably, a guide portion is provided at one end of the plug-in portion away from the plug-in post, and a diameter of the guide portion gradually decreases along the direction in which the plug-in portion moves away from the plug-in post.

[0015] In this technical solution, it should be noted that the minimum diameter of the guide part is smaller than the diameter of the stirring shaft, and the maximum diameter of the guide part is equivalent to the diameter of the stirring shaft. The guide part is set, so that the plug-in part is easier to insert into the stirring shaft, that is, when the plug-in part is inserted into the stirring shaft, the smallest diameter end of the guide part faces the stirring shaft. Due to the diameter difference between the two, the guide part does not need to be completely aligned with the stirring shaft and can be inserted into the stirring shaft, which facilitates the connection between the connecting part and the stirring shaft.

[0016] Preferably, a bearing seat is provided on the stirring shaft, a first bearing is provided in the bearing seat, and the first bearing is sleeved on the driving shaft.

[0017] In this technical solution, it should be noted that the bearing seat is fixedly connected to the fermentation bin, and the drive shaft and the bearing seat are connected through the first bearing. The number of the first bearings is specifically two, which are spaced apart on the left and right.

[0018] Preferably, a sealing rubber ring and a lip-shaped sealing ring are further provided in the bearing, and the sealing rubber ring and the lip-shaped sealing ring are sleeved on the stirring shaft.

[0019] In this technical solution, it should be noted that the fermentation chamber is sealed by two sealing rings. The sealing of the lip-shaped sealing ring is achieved by deforming its lip under the action of liquid pressure, so that the lip edge is tightly attached to the sealing surface. The higher the liquid pressure, the tighter the lip edge is attached to the sealing surface. After the sealing lip edge is worn, it has a certain ability to automatically compensate.

[0020] Preferably, the lip sealing ring is located on a side of the sealing rubber ring away from the mounting structure.

[0021] In this technical solution, the sealing rubber ring and lip seal are used for double sealing to prevent the material from leaking out of the silo and causing environmental pollution. The commonly used material is fluorine rubber, which is resistant to high temperature and corrosion.

[0022] Preferably, a sprocket is provided at one end of the drive shaft.

[0023] In this technical solution, it should be noted that multiple stirring shafts are provided in the fermentation bin, each stirring shaft is provided with a sprocket, and force is transmitted between the two stirring shafts through the chain and the sprocket to achieve synchronous rotation of the multiple stirring shafts.

[0024] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0025] 1. In the present invention, the axial force between the drive shaft and the stirring shaft is transmitted through the friction force between the plug post and the slot, that is, although the diameter of the slot is larger than the diameter of the plug post and there is a gap between the two, the end of the plug post will still contact the slot to provide force transmission. Secondly, in the present invention, since the drive shaft and the stirring shaft are connected through the slot and the plug post, there is a gap between the plug post and the slot, which is a flexible connection, so that the coaxiality between the drive shaft and the stirring shaft can be fine-tuned within the gap range, thereby improving the service life of the stirring shaft.

[0026] 2. In the present invention, the limiting part and the plug-in part are provided to realize the detachable connection between the stirring shaft, the connecting piece and the driving shaft. During the specific installation, after one end of the stirring shaft is installed on the fermentation bin, the plug-in part of the connecting piece is inserted into the stirring shaft, and then the slot on the driving shaft is docked with the plug-in column on the connecting piece, and the driving shaft is installed on the stirring bin.

[0027] 3. In the present invention, the limiting sleeve is used to limit the connection piece to ensure that the driving shaft and the stirring shaft do not become loose.

[0028] 4. In the present invention, the guide portion is provided to make it easier to insert the plug-in portion into the stirring shaft. That is, when the plug-in portion is inserted into the stirring shaft, the smallest diameter end of the guide portion faces the stirring shaft. Due to the diameter difference between the two, the guide portion does not need to be completely aligned with the stirring shaft to be inserted into the stirring shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The present invention will be described by way of examples with reference to the accompanying drawings, in which:

[0030] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0031] Figure 2 This is a side view schematic diagram of the three-dimensional structure of the utility model;

[0032] Figure 3 for Figure 2 Schematic diagram after cutting along EE;

[0033] Figure 4 This is a schematic diagram of the three-dimensional structure of the stirring shaft and the driving shaft of the utility model;

[0034] Figure 5 for Figure 4 A magnified schematic diagram of point A in the middle;

[0035] Figure 6 for Figure 4 A magnified schematic diagram of point B in the middle;

[0036] Among them: 1-fermentation bin, 2-stirring shaft, 3-drive shaft, 31-bearing seat, 32-first bearing, 33-sealing rubber ring, 34-lip sealing ring, 4-connector, 41-pin, 42-plug-in part, 43-limiting part, 44-guide part, 45-limiting sleeve, 46-second screw hole, 47-first screw hole, 5-sprocket, 6-second bearing. DETAILED DESCRIPTION

[0037] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but rather merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0040] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, it does not need to be further defined or explained in subsequent drawings.

[0041] In the present invention, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other.

[0043] Example 1

[0044] like Figure 1-6 As shown, an embodiment of the utility model discloses a flexible mounting structure of a rotating shaft, which is used to connect the stirring shaft 2 and the driving shaft 3. The mounting structure includes a connecting member 4, one end of the connecting member 4 is connected to one end of the stirring shaft 2, and the other end of the connecting member 4 is provided with a plug post 41. One end of the driving shaft 3 is provided with a slot that is plugged into the plug post 41, and the diameter of the slot is larger than the diameter of the plug post 41. It should be noted that a stirring blade is provided on the side wall of the stirring shaft 2, and the stirring blade is spiral-shaped. The stirring shaft 2 is a hollow structure. When installing the stirring shaft 2, first, one end of the stirring shaft 2 is installed on the side wall of the fermentation bin 1 through the second bearing 6, and then the slot of the drive shaft 3 is docked with the plug 41 to connect the stirring shaft 2 to the drive shaft 3. Finally, the drive shaft 3 is installed on the stirring bin. The drive shaft 3 is driven by an external motor to drive the stirring shaft 2 to rotate and stir the feces in the fermentation bin 1. The axial force between the drive shaft 3 and the stirring shaft 2 is transmitted through the friction between the plug 41 and the slot. That is, although the diameter of the slot is larger than the diameter of the plug 41 and there is a gap between the two, the end of the plug 41 will still contact the slot to provide force transmission. Secondly, in the present invention, since the drive shaft 3 and the stirring shaft 2 are connected through the slot and the plug 41, there is a gap between the plug 41 and the slot, which is a flexible connection, so that the coaxiality between the drive shaft 3 and the stirring shaft 2 can be fine-tuned within the gap range, thereby improving the service life of the stirring shaft.

[0045] like Figure 5 As shown, in this embodiment, the diameter difference between the slot and the plug post 41 is less than 0.5 mm.

[0046] like Figure 5 As shown, in this embodiment, the connecting member 4 includes a plug-in portion 42 and a limiting portion 43 located at one end of the plug-in portion 42, the plug-in portion 42 is inserted into the stirring shaft 2, the limiting portion 43 is located outside the stirring shaft 2, and the diameter of the limiting portion 43 is larger than the diameter of the stirring shaft 2, and the plug 41 is provided at one end of the limiting portion 43 away from the plug-in portion 42. It should be noted that the plug-in portion 42 is cylindrical and is used to be inserted into the stirring shaft 2 to realize the connection between the connecting piece 4 and the stirring shaft 2. The diameter of the limiting portion 43 is larger than the diameter of the stirring shaft 2, and it is stuck on the outside of the stirring shaft 2. In this solution, the limiting portion 43 and the plug-in portion 42 are set, and the stirring shaft 2 can be detachably connected with the connecting piece 4 and the drive shaft 3. During the specific installation, after one end of the stirring shaft 2 is installed on the fermentation bin 1, the plug-in portion 42 of the connecting piece 4 is inserted into the stirring shaft 2, and then the slot on the drive shaft 3 is docked with the plug column 41 on the connecting piece 4, and the drive shaft 3 is installed on the stirring bin.

[0047] like Figure 5 As shown, in this embodiment, a limiting sleeve 45 is sleeved on the drive shaft 3, and the end of the limiting sleeve 45 contacts the end of the limiting portion 43. The limiting sleeve 45 is provided with a first screw hole 47, and the drive shaft 3 is provided with a second screw hole 46 that cooperates with the first screw hole 47. The limiting sleeve 45 is fixed to the drive shaft 3 by a bolt inserted into the first screw hole 47 and the second screw hole 46. It should be noted that the limiting sleeve 45 is used to limit the connection member 4 to ensure that the drive shaft 3 and the stirring shaft 2 do not get loose. After the connection member 4 connects the drive shaft 3 and the stirring shaft 2, the limiting sleeve 45 is connected to the drive shaft 3 by the bolt. At this time, the limiting sleeve 45 presses the connection member 4 tightly, thereby ensuring that the drive shaft 3 and the stirring shaft 2 do not get loose.

[0048] like Figure 5 As shown, in this embodiment, a guide portion 44 is provided at one end of the plug-in portion 42 away from the plug-in post 41, and the diameter of the guide portion 44 gradually decreases as the plug-in portion 42 moves away from the plug-in post 41. It should be noted that the minimum diameter of the guide portion 44 is smaller than the diameter of the stirring shaft 2, and the maximum diameter of the guide portion 44 is equivalent to the diameter of the stirring shaft 2. The provision of the guide portion 44 makes it easier to insert the plug-in portion 42 into the stirring shaft 2. That is, when the plug-in portion 42 is inserted into the stirring shaft 2, the smallest diameter end of the guide portion 44 faces the stirring shaft 2. Due to the diameter difference between the two, the guide portion 44 does not need to be completely aligned with the stirring shaft 2 to be inserted into the stirring shaft 2, thereby facilitating the connection between the connector 4 and the stirring shaft 2.

[0049] Example 2

[0050] like Figure 6 As shown, this embodiment is substantially the same as the above embodiment, except that a bearing seat 31 is provided on the stirring shaft 2, a first bearing 32 is provided in the bearing seat 31, and the first bearing 32 is sleeved on the drive shaft 3. It should be noted that the bearing seat 31 is fixedly connected to the fermentation bin 1, and the drive shaft 3 and the bearing seat 31 are connected by the first bearing 32. There are two first bearings 32, which are spaced apart on the left and right.

[0051] like Figure 6 As shown, in this embodiment, the bearing is further provided with a sealing rubber ring 33 and a lip sealing ring 34, which are sleeved on the stirring shaft 2. It should be noted that the two sealing rings are used to seal the fermentation chamber 1, and the sealing of the lip sealing ring 34 is achieved by deforming its lip under the action of liquid pressure, causing the lip to tightly contact the sealing surface. The higher the liquid pressure, the tighter the lip is to the sealing surface. If the sealing lip is worn, it has a certain ability to automatically compensate.

[0052] like Figure 6 As shown, in this embodiment, the lip seal ring 34 is located on the side of the sealing rubber ring 33 away from the mounting structure.

[0053] like Figure 6 As shown, in this embodiment, a sprocket 5 is provided at one end of the drive shaft 3. It should be noted that a plurality of stirring shafts 2 are provided in the fermentation bin 1, and each stirring shaft 2 is provided with a sprocket 5. The force between the two stirring shafts 2 is transmitted through the chain and the sprocket 5, so that the multiple stirring shafts 2 can rotate synchronously.

[0054] The working principle of this utility model is:

[0055] When installing the stirring shaft 2, first install one end of the stirring shaft 2 on the side wall of the fermentation bin 1 through the second bearing 6, then insert the plug-in part 42 into the stirring shaft 2 to realize the connection between the connecting piece 4 and the stirring shaft 2, and then dock the slot of the driving shaft 3 with the plug post 41, so that the stirring shaft 2 is connected to the driving shaft 3. After the connecting piece 4 connects the driving shaft 3 and the stirring shaft 2, the limiting sleeve 45 is connected to the driving shaft 3 through a bolt. At this time, the limiting sleeve 45 presses the connecting piece 4 tightly, thereby ensuring that the driving shaft 3 and the stirring shaft 2 do not get loose. Finally, the driving shaft 3 is installed on the stirring bin, and the driving shaft 3 is driven by an external motor to bring The dynamic stirring shaft 2 rotates to stir the feces in the fermentation bin 1, and the axial force between the drive shaft 3 and the stirring shaft 2 is transmitted through the friction between the column 41 and the slot, that is, although the diameter of the slot is larger than the diameter of the column 41 and there is a gap between the two, the end of the column 41 will still be in contact with the slot to provide force transmission. Secondly, in the utility model, since the drive shaft 3 and the stirring shaft 2 are connected through the slot and the column 41, there is a gap between the column 41 and the slot, which is a flexible connection, so that the coaxiality between the drive shaft 3 and the stirring shaft 2 can be fine-tuned within the gap range, thereby improving the service life of the stirring shaft.

[0056] The circuits, electronic components and modules involved are all existing technologies and can be fully implemented by those skilled in the art. Needless to say, the content protected by this utility model does not involve improvements to software and methods.

[0057] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0058] The above description of the disclosed embodiments will enable one skilled in the art to implement or use the present invention. Various modifications to these embodiments will be readily apparent to one skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not limited to the embodiments shown herein but is intended to conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A flexible mounting structure for a rotating shaft, wherein the mounting structure is used to connect a stirring shaft (2) and a driving shaft (3), characterized in that: The mounting structure comprises a connecting member (4), one end of the connecting member (4) is connected to one end of the stirring shaft (2), the other end of the connecting member (4) is provided with a plug post (41), and one end of the driving shaft (3) is provided with a slot that is plugged into and matched with the plug post (41), and the diameter of the slot is larger than the diameter of the plug post (41).

2. The flexible installation structure of a rotating shaft according to claim 1, characterized in that: The diameter difference between the slot and the plug post (41) is less than 0.5 mm.

3. The flexible installation structure of a rotating shaft according to claim 1, characterized in that: The connecting member (4) comprises a plug-in portion (42) and a limiting portion (43) located at one end of the plug-in portion (42); the plug-in portion (42) is inserted into the stirring shaft (2); the limiting portion (43) is located outside the stirring shaft (2); and the diameter of the limiting portion (43) is larger than the diameter of the stirring shaft (2); and the plug post (41) is provided at one end of the limiting portion (43) away from the plug-in portion (42).

4. The flexible installation structure of a rotating shaft according to claim 3, characterized in that: The drive shaft (3) is provided with a limiting sleeve (45), the end of the limiting sleeve (45) contacts the end of the limiting portion (43), the limiting sleeve (45) is provided with a first screw hole (47), the drive shaft (3) is provided with a second screw hole (46) matched with the first screw hole (47), and the limiting sleeve (45) is fixed to the drive shaft (3) by a bolt inserted into the first screw hole (47) and the second screw hole (46).

5. The flexible installation structure of a rotating shaft according to claim 3, characterized in that: A guide portion (44) is provided at one end of the plug-in portion (42) away from the plug-in post (41), and the diameter of the guide portion (44) gradually decreases along the direction in which the plug-in portion (42) is away from the plug-in post (41).

6. A flexible shaft installation structure according to any one of claims 1 to 5, characterized in that: A bearing seat (31) is sleeved on the stirring shaft (2), a first bearing (32) is arranged in the bearing seat (31), and the first bearing (32) is sleeved on the driving shaft (3).

7. The flexible installation structure of a rotating shaft according to claim 6, characterized in that: A sealing rubber ring (33) and a lip-shaped sealing ring (34) are also provided in the bearing seat (31), and the sealing rubber ring (33) and the lip-shaped sealing ring (34) are sleeved on the stirring shaft (2).

8. The flexible installation structure of a rotating shaft according to claim 7, characterized in that: The lip seal ring (34) is located on a side of the sealing rubber ring (33) away from the mounting structure.

9. A flexible shaft installation structure according to any one of claims 1 to 5, characterized in that: A sprocket (5) is provided at one end of the drive shaft (3).

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