A waterproof bolt, its gear box, and aerator

Abstract

The present application relates to a waterproof bolt and its gearbox and aerator, and relates to the field of waterproof structures. The waterproof bolt includes a cap body and a cap cover. The cap body is provided with an air duct, which passes through one end of the cap body. The outer wall of the cap body is provided with an air vent connected to the air duct. The cap cover is provided with a mounting groove. The cap cover is mounted on the outside of the end of the cap body through the mounting groove. The cap cover blocks the air vent. A ventilation gap is formed between the inner wall of the cap cover and the outer wall of the cap body. The ventilation gap is located in the mounting groove, and the air vent is connected to the outside through the ventilation gap. The cap body is prismatic, and the inner wall of the mounting groove is provided with a rib groove corresponding to the edge of the cap body. The cap cover is limited by the rib groove to produce relative rotation with the cap body. This waterproof bolt realizes the waterproofing of the gearbox while realizing the air circulation inside and outside the gearbox. This waterproof bolt is easy to disassemble and assemble, has a stable structure, and has a good waterproof effect. This waterproof bolt can also be switched to a fully sealed state to improve the waterproof and dustproof performance under special conditions.

Description

Technical Field

[0001] The present application relates to the field of waterproof structures, and in particular to a waterproof bolt, a gear box thereof, and an aerator. Background Art

[0002] An aerator is a machine used in fish farming. Its primary function is to increase the oxygen content in the water to prevent fish from suffering from oxygen deprivation. An aerator typically consists of a float, a motor, and a stirring blade. The motor and stirring blade are connected by a gearbox. The gearbox slows the motor's speed and then drives the stirring blade, which stirs the water and brings it into contact with air, thus increasing oxygen. The buoyancy of the float keeps the motor and gearbox above the water surface.

[0003] Regarding the aforementioned technologies, gearboxes are susceptible to contact with water splashes and therefore require waterproofing. However, gearboxes heat up during operation, causing the air inside to expand and escape. When the gearbox stops operating, the air inside cools down and contracts, causing external air to be drawn into the gearbox. This air can easily carry water with it during entry, adversely affecting the oil lubrication within the gearbox. Summary of the Invention

[0004] In order to prevent water from entering the gear box and adversely affecting oil lubrication, the present application provides a waterproof bolt, a gear box, and an aerator.

[0005] In the first aspect, the present application provides a waterproof bolt, which adopts the following technical solution:

[0006] A waterproof bolt comprises a cap body and a cap cover, wherein the cap body is provided with an air duct, the air duct passes through one end of the cap body, the outer wall of the cap body is provided with an air hole connected to the air duct, the cap cover is provided with a mounting groove, the cap cover is sleeved on the outside of the end of the cap body through the mounting groove, the cap cover covers the air hole, a ventilation gap is formed between the inner wall of the cap cover and the outer wall of the cap body, the ventilation gap is located in the mounting groove, and the air hole is connected to the outside through the ventilation gap.

[0007] By adopting the above technical solution, the waterproof bolt is installed on the gear box, the cap body needs to be arranged vertically, and the cap cover needs to be located above the cap body. The outer wall of the cap body and the box body are sealed by a sealing ring, and the cap cover is buckled on the prismatic section of the cap body so that the vent hole is opposite the ventilation gap. When the gear box or the aerator is in use, the gear box will generate heat during operation, and the air inside it will expand due to the heat. The air can be discharged to the outside of the gear box through the air duct, the air duct, and the ventilation gap. When the gear box stops working, the internal air temperature drops and the volume shrinks. The external air enters the gear box through the ventilation gap, the air duct, and the air duct in turn. Since the air duct is located above the ventilation gap, the air duct is connected to the outside air through the ventilation gap extending downward. Therefore, it is difficult for external water to enter the vent hole and the air duct under the action of gravity, and it is difficult for water to enter the gear box, ensuring that the oil lubrication in the gear box is in a normal state.

[0008] Preferably, the cap body is prismatic, and the inner wall of the mounting groove is provided with rib grooves corresponding to the edges of the cap body one by one, and the cap cover is restricted from rotating relative to the cap body by the rib grooves.

[0009] By adopting the above technical solution, the cap is restricted by the rib grooves to prevent relative rotation between the cap and the cap body, thereby improving the stability of the cap on the cap body. When the cap is separated from the cap body, when the waterproof bolt needs to be disassembled and installed on the equipment, the prism section of the cap body makes it easier for people to directly twist the cap body by hand.

[0010] Preferably, the cross section of the cap body is rectangular or regular hexagonal.

[0011] By adopting the above technical solution, the rectangular or regular hexagonal cross section of the cap body is convenient for being opened with a wrench.

[0012] Preferably, the depth of the mounting groove is smaller than the prism height of the cap body. When the cap is mounted on the cap body, a portion of the prism portion of the cap body is exposed outside the cap, and the portion is used for being clamped by a wrench.

[0013] By adopting the above technical solution, when the cap is installed on the cap body, there is a part of the prismatic part of the cap body exposed outside the cap, which is used for clamping the wrench. When the wrench is clamped in this position, the cap limits the side wall of the wrench, thereby preventing the wrench from slipping.

[0014] Preferably, the groove wall of the mounting groove is composed of multiple surfaces, and the multiple surfaces correspond one-to-one to the side wall surfaces of the cap body; the groove wall of the mounting groove includes a concave surface, and the ventilation gap is formed between the concave surface and the side wall surface of the cap body.

[0015] By adopting the above technical solution, a ventilation gap is formed between the concave surface and the side wall surface of the cap body. The setting of the concave surface ensures that the waterproof bolt has a ventilation gap wide enough for ventilation.

[0016] Preferably, the cap body is in the shape of a regular prism, the cap cover can be mounted on the cap body after being rotated at an angle, the groove wall of the mounting groove includes an abutting surface, and the abutting surface abuts against the corresponding outer wall of the cap body.

[0017] By adopting the above technical solution, when installing an aerator on water or the gearbox needs to be shut down for a long time, the personnel can pull out the cap from the cap body, rotate the angle of the cap, and then put it back in so that the side wall of the cap body where the vent is located is facing the abutment surface, and the abutment surface seals the vent. In this state, even if the waterproof bolt is completely submerged in water or flipped in water, water from the outside will not enter the gearbox through the vent or air duct. The waterproof bolt is completely waterproof, providing insurance for the installation of the gearbox and aerator. When the gearbox is idle for a long time, dust from the outside will not enter the gearbox through the vent or air duct. The waterproof bolt can completely block dust.

[0018] Preferably, a protrusion is provided on the abutting surface, and along the depth direction of the mounting groove, the height of the protrusion protruding from the abutting surface gradually increases, and the protrusion is used to press against the outer wall of the cap body.

[0019] By adopting the above technical solution, when installing the cap on the cap body, as the cap body gradually penetrates into the installation groove, the protrusion gradually presses against the outer wall of the cap body, and the pressure between the two increases, which also increases the static friction, making the cap and the cap body firmly combined and not easy to separate spontaneously.

[0020] In a second aspect, the present application provides a gear box, which adopts the following technical solution: a gear box, comprising a box body, on which the above-mentioned waterproof bolts are provided, and an air duct is connected to the inside of the gear box.

[0021] Preferably, the box body is provided with a refueling hole, and the waterproof bolt is installed in the refueling hole through the cap body.

[0022] By adopting the above technical solution, the waterproof bolt also serves as a cover for the oil filling hole, and the waterproof bolt realizes two functions at the same time.

[0023] In a third aspect, the present application provides an aerator, which adopts the following technical solution: an aerator, including a gearbox.

[0024] In summary, this application includes at least one of the following beneficial technical effects:

[0025] 1. This waterproof bolt not only allows air circulation inside and outside the gear box, but also makes the gear box waterproof;

[0026] 2. This waterproof bolt is easy to disassemble and assemble;

[0027] 3. This waterproof bolt can be switched to a fully sealed state to improve waterproof and dustproof performance under special conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional diagram of the first embodiment.

[0029] Figure 2 It is an exploded view of the first embodiment.

[0030] Figure 3 yes Figure 1 Sectional view along line AA.

[0031] Figure 4 yes Figure 1 Cross-sectional view along line BB.

[0032] Figure 5 It is an exploded view of the second embodiment, mainly highlighting the structure of the raised portion.

[0033] Figure 6 It is a cross-sectional view of the second embodiment.

[0034] Figure 7 It is a schematic diagram of embodiment three.

[0035] Figure 8 It is a schematic diagram of embodiment 4.

[0036] Explanation of the accompanying reference numerals: 1. Cap body; 2. Cap cover; 11. External thread section; 12. Limiting ring; 3. Sealing ring; 4. Mounting groove; 13. Air duct; 14. Air vent; 15. Ventilation gap; 41. Ridge; 42. Concave surface; 43. Abutment surface; 431. Raised portion; 5. Box body; 51. Refueling hole; 61. Motor; 62. Stirring blade; 63. Floating block. DETAILED DESCRIPTION

[0037] The following is combined with Figure 1-8 This application is described in further detail.

[0038] Example 1:

[0039] The embodiment of the present application discloses a waterproof bolt. Figure 1 and Figure 2 A waterproof bolt comprises a cap body 1 and a cap 2. The cap body 1 is cylindrical, with an externally threaded section 11 at one end and a prismatic shape at the other end. An outwardly protruding retaining ring 12 is integrally fixed to the outer wall of the cap body 1. The retaining ring 12 is located between the externally threaded section 11 and the prism. A sealing ring 3 is provided on the side of the retaining ring 12 facing the externally threaded section 11. The sealing ring 3 is sleeved over the externally threaded section 11. The cap 2 is cylindrical, with a mounting groove 4 at one end. The cap 2 is sleeved over the prismatic end of the cap body 1 through the mounting groove 4.

[0040] Reference Figure 2 and Figure 3The cap body 1 is provided with an air duct 13, which passes through the end of the cap body 1 in the direction of the external thread section 11. The outer wall of the cap body 1 is provided with a single air vent 14 connected to the air duct 13. The air vent 14 is located on one of the prismatic side walls of the cap body 1 and is located away from the external thread section 11. When the cap 2 is installed on the cap body 1, the cap 2 blocks the air vent 14, and a ventilation gap 15 is formed between the inner wall of the cap 2 and the outer wall of the cap body 1. The ventilation gap 15 is located in the installation groove 4, and the air vent 14 is connected to the outside world through the ventilation gap 15.

[0041] Reference Figure 1 and Figure 2 The prism section of the cap body 1 is specifically a regular hexagonal prism, and its cross-section is a regular hexagon. In another embodiment, it can also be a rectangle, so that the prism section of the cap body 1 can be easily moved with a wrench. When the cap 2 is separated from the cap body 1, when disassembling and assembling the waterproof bolt on the equipment, the longer prism section is convenient for people to twist directly by hand, and generally no wrench is needed. The depth of the mounting groove 4 is less than the prism height of the cap body 1. When the cap 2 is installed on the cap body 1, there is a part of the prism part of the cap body 1 exposed outside the cap 2. This part is used for clamping with a wrench. When the wrench is clamped in this position, the cap 2 and the limit ring 12 limit the wrench in the middle, which prevents the wrench from slipping. The outer wall of the cap 2 is a cylindrical surface. When the cap body 1 is tightened to the equipment through the external thread section 11, it is difficult for people to twist the cap body 1 through the cap 2, which can prevent idle people from unscrewing the waterproof bolt out of boredom.

[0042] Reference Figure 2 and Figure 4 The wall of the mounting groove 4 is composed of multiple surfaces, each of which corresponds one-to-one with the sidewall surface of the cap body 1. In this embodiment, the mounting groove 4 is composed of six surfaces distributed circumferentially. The inner wall of the mounting groove 4 is provided with a rib groove 41 that corresponds one-to-one with the edge of the cap body 1. The cap 2 is restricted from rotating relative to the cap body 1 by the rib groove 41. The wall of the mounting groove 4 includes a concave surface 42 and an abutment surface 43. Two concave surfaces 42 are symmetrically provided along the circumference of the mounting groove 4. The remaining four surfaces of the mounting groove 4 are all abutment surfaces 43.

[0043] Concave surface 42 creates a recessed groove wall within mounting groove 4, creating a venting gap 15 between concave surface 42 and the sidewall of cap body 1. This ensures that the waterproof bolt has a sufficiently wide venting gap 15 for ventilation. Abutment surface 43 abuts the corresponding outer wall of cap body 1, effectively positioning cap body 1 and mounting groove 4. Cap 2 can be rotated and mounted on cap body 1. When abutment surface 43 abuts the sidewall of cap body 1 where vent hole 14 is located, it blocks vent hole 14, rendering the waterproof bolt airtight or watertight.

[0044] Example 2:

[0045] The present application also discloses a waterproof bolt. Figure 5 and Figure 6 A waterproof bolt, the difference between Example 2 and Example 1 is that: a protrusion 431 is provided on the abutting surface 43, and along the depth direction of the installation groove 4, the height of the protrusion 431 protruding from the abutting surface 43 gradually increases, so that the abutting surface 43 presents a non-planar shape. When the cap 2 is installed on the cap body 1, as the cap body 1 gradually penetrates into the installation groove 4, the protrusion 431 gradually presses against the outer wall of the cap body 1, so that the cap 2 and the cap body 1 are firmly combined and it is not easy for the two to separate spontaneously. When the vent 14 is facing the protrusion 431 and the cap body 1 is completely installed in the installation groove 4, the protruding part of the protrusion 431 just abuts against the opening of the vent 14, and the protrusion 431 further improves the sealing effect of the vent 14.

[0046] Example 3:

[0047] The present application also discloses a gear box. Figure 7 A gearbox includes a housing 5, which is provided with a refueling hole 51. The opening of the refueling hole 51 faces vertically upward and is a threaded hole. A waterproof bolt according to Embodiment 1 or Embodiment 2 is provided on the housing 5. The waterproof bolt is mounted to the refueling hole 51 through a cap 1. The cap 1 is tightened to the refueling hole 51 via an externally threaded section 11. A sealing ring 3 establishes a seal between a retaining ring 12 and the opening of the refueling hole 51. An air duct 13 communicates with the interior of the gearbox.

[0048] Example 4:

[0049] The present application also discloses an oxygenator. Figure 8 An aerator includes a motor 61, a gearbox, a stirring blade 62, and multiple floats 63. The gearbox establishes a transmission between the motor 61 and the stirring blades 62. The motor 61 is water-cooled. When the stirring blades 62 stir the water, water splashes onto the motor 61, cooling it. When the aerator is placed on the water surface, the buoyancy of the floats 63 keeps the gearbox and motor 61 above the water surface.

[0050] The implementation principles of this application are:

[0051] The waterproof bolt is installed on the gearbox, and the outer wall of the cap body 1 and the box body 5 are sealed by the sealing ring 3. The cap 2 is buckled on the prismatic section of the cap body 1, and the vent hole 14 is facing the concave surface 42. When the gearbox or aerator is in use, the gearbox will generate heat during operation, and the air inside it will expand due to the heat. The air can be discharged to the outside of the gearbox through the vent 13, the vent 14, and the ventilation gap 15. When the gearbox stops working, the internal air temperature drops and the volume shrinks. The outside air enters the gearbox through the ventilation gap 15, the vent 14, and the vent 13 in sequence. Since the vent 14 is located above the ventilation gap 15, the vent 13 is connected to the outside air through the ventilation gap 15 extending downward. Therefore, the outside water is not easy to enter the vent 14 and the vent 13 under the action of gravity. The gearbox is not easy to enter water, ensuring that the oil lubrication in the gearbox is in a normal state.

[0052] When lubricating oil needs to be added to the gear box, the waterproof bolt can be removed and oil can be added through the oil filling hole 51.

[0053] When installing an aerator on water or requiring a long downtime for a gearbox, personnel can remove cap 2 from cap body 1, rotate cap 2, and reinstall it so that the sidewall of cap body 1, where vent 14 is located, faces abutment surface 43. Once cap body 1 is fully inserted into mounting slot 4, raised portion 431 on abutment surface 43 secures cap body 1, securing cap 2 and cap body 1. Furthermore, the end of raised portion 431, projecting toward the center of mounting slot 4, precisely abuts the opening of vent 14, effectively sealing it.

[0054] In this state, even if the waterproof bolt is completely submerged or tilted in the water, no water from the outside will enter the gearbox through the vent hole 14 and the air passage 13. The waterproof bolt is completely waterproof, providing a safe installation for the gearbox and aerator. When the gearbox is idle for a long time, dust from the outside will not enter the gearbox through the vent hole 14 and the air passage 13. The waterproof bolt can completely block dust.

[0055] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A waterproof bolt, characterized by: The invention comprises a cap body (1) and a cap cover (2), wherein the cap body (1) is provided with an air passage (13), the air passage (13) passes through one end of the cap body (1), the outer wall of the cap body (1) is provided with an air hole (14) connected with the air passage (13), the cap cover (2) is provided with a mounting groove (4), the cap cover (2) is sleeved on the end of the cap body (1) through the mounting groove (4), the cap cover (2) blocks the air hole (14), and a ventilation gap (15) is formed between the inner wall of the cap cover (2) and the outer wall of the cap body (1), the ventilation gap (15) is located in the mounting groove (4), and the air hole (14) is connected with the outside through the ventilation gap (15); The cap body (1) is prismatic, and the inner wall of the mounting groove (4) is provided with ridge grooves (41) corresponding to the edges of the cap body (1). The cap cover (2) is restricted from rotating relative to the cap body (1) by the ridge grooves (41); The groove wall of the installation groove (4) is composed of multiple surfaces, and the multiple surfaces correspond one-to-one to the side wall surface of the cap body (1); the groove wall of the installation groove (4) includes a concave surface (42), and the ventilation gap (15) is formed between the concave surface (42) and the side wall surface of the cap body (1); The cap body (1) is in the shape of a regular prism, the cap cover (2) can be mounted on the cap body (1) after being rotated at an angle, the groove wall of the mounting groove (4) includes an abutment surface (43), and the abutment surface (43) abuts against the corresponding outer wall of the cap body (1); A raised portion (431) is provided on the abutting surface (43), and along the depth direction of the mounting groove (4), the height of the raised portion (431) protruding from the abutting surface (43) gradually increases, and the raised portion (431) is used to press against the outer wall of the cap body (1).

2. The waterproof bolt according to claim 1, characterized in that: The cross section of the cap body (1) is a regular hexagon.

3. The waterproof bolt according to claim 2, characterized in that: The depth of the mounting groove (4) is less than the prism height of the cap body (1); when the cap (2) is mounted on the cap body (1), a portion of the prism portion of the cap body (1) is exposed outside the cap (2); and this portion is used for being clamped by a wrench.

4. A gearbox, comprising a housing (5), characterized in that: The box body (5) is provided with a waterproof bolt according to any one of claims 1 to 3, and the air duct (13) is communicated with the inside of the gear box.

5. The gearbox according to claim 4, characterized in that: The box body (5) is provided with a refueling hole (51), and the waterproof bolt is installed in the refueling hole (51) through the cap body (1).

6. An oxygenator, characterized in that: The invention comprises a gearbox as described in any one of claims 4-5.

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