Corrosion-resistant motor shell and aerator motor adopting same

Abstract

The utility model discloses a corrosion-resistant motor housing and an aerator motor employing the same. The motor shell comprises an outer shell, a main cover and an auxiliary cover; the shell comprises an annular stainless steel insert, and the two sides of the outer wall of the stainless steel insert are provided with installation flanges formed by engineering plastic in an injection molding mode. The main cover and the auxiliary cover are respectively connected with the two mounting flanges; a spigot A is formed in the inner side face of the main cover, and a spigot B is formed in the inner side face of the auxiliary cover. The seam allowance A and the seam allowance B are respectively inserted into the stainless steel insert, and O-shaped sealing rings are arranged between the seam allowance A and the stainless steel insert and between the seam allowance B and the stainless steel insert; the main cover and the auxiliary cover are formed by injection molding of engineering plastics, and cast iron inserts are wrapped in the main cover and the auxiliary cover. The motor shell is high in strength and good in use reliability, parts, making contact with the outside, of the motor shell are made of engineering plastics or stainless steel, the two materials have good corrosion resistance, and therefore the corrosion resistance of the motor shell is improved, and the motor shell is more suitable for mariculture.

Description

TECHNICAL FIELD

[0001] The utility model relates to an oxygen -increasing machine motor field, concretely relates to a corrosion -resistant motor casing and adopt the oxygen -increasing machine motor of casing. BACKGROUND

[0002] In the field of aquaculture, the oxygen -increasing machine as the important equipment in aquaculture is mainly used to increase the dissolved oxygen of aquaculture water body, so as to prevent the lack of oxygen phenomenon of aquaculture water body, and can also inhibit the growth of anaerobic bacteria in water, prevent the metamorphic threat of aquaculture water body to the living environment of fish, shrimp and the like. The oxygen -increasing machine will agitate water body to produce a large amount of water splash in the working process, and the water splash will fall on the oxygen -increasing machine motor in the working process of the oxygen -increasing machine, and play a cooling role. Since the controller in the motor cannot meet water, the higher waterproof performance, corrosion resistance and reliability of the casing of the oxygen -increasing machine motor are put forward.

[0003] The casing of the oxygen -increasing machine motor usually includes a shell, and a main cover and a vice cover arranged on both sides of the shell. In the prior art, the main cover and the vice cover on both sides of the motor casing are both made of plastic material, and the main cover, the vice cover and the shell are sealed by using a sealing gasket. The sealing gasket has poor sealing performance, and is easy to fail after long-term use, thereby damaging the sealing performance of the casing, and further causing the motor to be flooded and burned. In addition, the water in the breeding pond has strong corrosiveness, especially in seawater aquaculture. At present, the shell of the motor casing on the market is usually made of aluminum alloy material, although the surface treatment can improve the corrosion resistance, but it can only delay the corrosion time, and cannot fundamentally solve the corrosion resistance problem of the aluminum alloy material, thereby shortening the service life of the motor casing. CONTENT OF THE UTILITY MODEL

[0004] The utility model provides a corrosion -resistant motor casing to overcome the above -mentioned problems existing in the prior art. The corrosion -resistant motor casing of the utility model includes a shell, a main cover and a vice cover. The inside of the main cover and the vice cover is wrapped with a cast iron insert, and is integrally injection molded with engineering plastic. The shell uses a stainless steel insert, and has an installation flange on the outside, which is injection molded with engineering plastic. The manufacturing cost is low, and the strength and dimensional stability of the motor casing are guaranteed. The parts of the motor casing that contact the outside world are made of engineering plastic or stainless steel, both of which have good corrosion resistance. Therefore, the corrosion resistance of the motor casing is improved, and it can be used in seawater aquaculture. In addition, O -ring seals are arranged between the main cover and the shell, and between the vice cover and the shell, forming axial sealing, which can prevent water from entering the main cover and the vice cover, improve the sealing performance of the motor casing, and improve the reliability. Correspondingly, the utility model also provides an oxygen -increasing machine motor using the casing.

[0005] For the motor casing, the technical scheme of the application is:

[0006] Corrosion-resistant motor housing, comprising a shell, a main cover and a secondary cover; the middle part of the main cover and the secondary cover is respectively provided with a shaft hole for installing the oxygenator motor shaft, and the main cover and the secondary cover are respectively arranged on both sides of the shell, so as to form a motor cavity between the shell, the main cover and the secondary cover; the shell comprises a ring-shaped stainless steel insert, and the outer wall of the stainless steel insert is provided with two mounting flanges formed by engineering plastic injection molding on both sides; the main cover and the secondary cover are connected with the two mounting flanges respectively; the inner side of the main cover is provided with an A stopper, and the inner side of the secondary cover is provided with a B stopper; the A stopper and the B stopper are respectively inserted into the stainless steel insert, and an O-shaped sealing ring is arranged between the A stopper, the B stopper and the stainless steel insert; the main cover and the secondary cover are formed by engineering plastic injection molding, and are wrapped with cast iron inserts inside.

[0007] Compared with the prior art, the corrosion-resistant motor housing has the advantages of high strength, good dimensional stability, low manufacturing cost, high use reliability and the like, and the parts of the motor housing in contact with the outside are engineering plastics or stainless steel, both of which have good corrosion resistance, thereby improving the corrosion resistance of the motor housing and making it more suitable for seawater farming. Specifically, the motor housing comprises a shell, a main cover and a secondary cover; the inside of the main cover and the secondary cover is wrapped with a cast iron insert, and the main cover and the secondary cover are integrally injection molded by engineering plastic, which has the strength and dimensional stability of cast iron parts and the excellent corrosion resistance of engineering plastic, while ensuring a relatively low manufacturing cost; the shell adopts a stainless steel insert, and the outer side is provided with mounting flanges formed by engineering plastic injection molding, which can ensure the strength of the shell and also have the corrosion resistance and heat dissipation of the stainless steel insert; in addition, O-shaped sealing rings are arranged between the main cover and the shell and between the secondary cover and the shell to form axial sealing, thereby preventing water from entering the main cover and the secondary cover stopper plane and improving the sealing performance and use reliability of the motor housing.

[0008] As an optimization, the A stopper and the B stopper are respectively provided with a ring-shaped groove, and the O-shaped sealing ring is embedded in the corresponding ring-shaped groove. In this way, the O-shaped sealing ring can be limited and positioned, thereby ensuring firm installation.

[0009] As an optimization, the main cover, the secondary cover and the mounting flange are connected and fixed by a set of bolts in the foregoing corrosion-resistant motor housing. At this time, the connection structure is simple and the assembly is convenient.

[0010] As an optimization, a threaded hole is formed in the main cover of the foregoing corrosion-resistant motor housing, which can be used to detect the sealing performance of the motor cavity, and after the motor is assembled, transformer oil can be added to cool the motor stator.

[0011] For the oxygenator motor, the technical solution of the present application is:

[0012] The motor of the aerator comprises a motor shell, a control box arranged on the top of the motor shell, and a rotor and a stator arranged in the interior of the motor shell; the motor shell is the corrosion-resistant motor shell as described above; the two ends of the rotating shaft of the rotor are respectively penetrated out of the main cover and the auxiliary cover of the motor shell.

[0013] As an optimization, in the motor of the aerator as described above, the main cover and the auxiliary cover are respectively embedded with an A bearing and a B bearing; the two ends of the rotating shaft are respectively inserted into the A bearing and the B bearing. Thus, the friction coefficient during the rotation of the rotating shaft can be reduced, and the normal working position can be ensured, with high rotation precision and convenient use and maintenance. Further, the rotating shaft is respectively sleeved with a mechanical seal between the A bearing and the main cover and between the B bearing and the auxiliary cover, for shaft sealing of the motor rotating shaft.

[0014] As an optimization, in the motor of the aerator as described above, the bottom of the control box is provided with a group of lugs; the main cover and the auxiliary cover are fixedly connected with the corresponding lugs through screws. At this time, the assembly is convenient and easy to implement. Further, the outgoing line of the motor is penetrated through the threading hole on the plug; the plug is arranged in the A outgoing line hole on the top of the main cover; the bottom of the control box is correspondingly provided with a B outgoing line hole; the B outgoing line hole and the A outgoing line hole are connected through an outgoing line nut; the outgoing line nut and the plug are provided with a compression washer therebetween. Thus, the sealing of the outgoing line holes of the main cover and the control box can be realized through the mutual cooperation of the plug, the compression washer and the outgoing line nut, so as to prevent the liquid from the outside from entering the interior of the control box and damaging the internal controller.

[0015] As an optimization, in the motor of the aerator as described above, the two sides of the motor shell are respectively provided with a machine foot, facilitating the installation of the motor.

[0016] Compared with the prior art, the motor of the aerator of the present application adopts a motor shell with a specific structure, and the parts in contact with the outside are made of engineering plastics or stainless steel, both of which have good corrosion resistance, thereby improving the corrosion resistance of the motor and making it more suitable for seawater aquaculture. Moreover, the motor of the aerator of the present application adopts a fully sealed structure design, with good sealing performance, which can prevent the motor from burning due to water ingress and leaking oil due to poor sealing of previous motors, leading to pollution of the aquaculture pond and even death of fish and shrimp. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a structural schematic view of the motor of the aerator in the embodiment of the present application;

[0018] Figure 2 is a structural schematic view of the motor shell in the embodiment of the present application;

[0019] Figure 3This is a schematic diagram of the main cover in an embodiment of this application;

[0020] Figure 4 This is a schematic diagram of the sub-cover structure in an embodiment of this application;

[0021] Figure 5 This is a schematic diagram of the outer shell in an embodiment of this application.

[0022] The markings in the attached diagram are as follows: 1-Outer shell, 101-Stainless steel insert, 102-Mounting flange, 103-Raised rib, 104-Reinforcing rib; 2-Main cover, 201-A stop, 202-Screw hole, 203-Sealing plug, 204-Outlet nut; 3-Secondary cover, 301-B stop; 4-O-ring seal; 5-Cast iron insert; 6-Control box, 601-Lug; 7-Rotor; 8-Shaft; 9-Stator; 10-Bearing A; 11-Bearing B; 12-Mechanical seal; 13-Machine foot. Detailed Implementation

[0023] The present application will be further described below with reference to the accompanying drawings and embodiments, but this should not be construed as limiting the present application.

[0024] Example:

[0025] See Figure 1 and Figure 2 The aerator motor of this application includes a motor housing; a control box 6 is provided on the top of the motor housing, and a controller is installed in the control box 6; the motor housing includes an outer shell 1, a main cover 2, and a secondary cover 3; the middle portions of the main cover 2 and the secondary cover 3 are respectively provided with shaft holes for installing the aerator motor shaft 8, and the main cover 2 and the secondary cover 3 are respectively located on both sides of the outer shell 1, thereby forming a motor cavity between the outer shell 1, the main cover 2, and the secondary cover 3; the outer shell 1 includes an annular stainless steel insert 101 (in this embodiment, specifically a stainless steel pipe stretch insert), and the outer walls of the stainless steel insert 101 are provided with mounting flanges 102 made of engineering plastic injection molding on both sides; the main cover 2 and the secondary cover 3 are respectively provided with shaft holes for installing the aerator motor shaft 8, and the middle portions of ... The main cover 2 is not connected to the two mounting flanges 102; the inner side of the main cover 2 is provided with a stop A 201, and the inner side of the secondary cover 3 is provided with a stop B 301; the stop A 201 and the stop B 301 are respectively inserted into the stainless steel insert 101, and an O-ring 4 is provided between the stop A 201 and the stop B 301 and the stainless steel insert 101; the main cover 2 and the secondary cover 3 are injection molded from engineering plastics and are internally wrapped with cast iron inserts 5; the motor cavity is provided with a rotor 7 and a stator 9; a foot 13 is provided on each side of the motor housing for mounting the motor; the two ends of the rotor 7 shaft 8 pass through the shaft holes on the main cover 2 and the secondary cover 3 respectively.

[0026] In this embodiment, the engineering plastic selected is reinforced nylon PA66.

[0027] See Figure 3 and Figure 4 In this embodiment, annular grooves are respectively formed on the A stop 201 and the B stop 301, and the O-ring 4 is embedded in the corresponding annular groove. This serves to limit and position the O-ring 4, ensuring a secure installation.

[0028] In this embodiment, the main cover 2, the secondary cover 3, and the mounting flange 102 are connected and fixed by a set of bolts. Specifically, the main cover 2, the secondary cover 3, and the mounting flange 102 are provided with a set of evenly spaced mounting holes; on the outer wall of the stainless steel insert 101, between the mounting holes of the two mounting flanges 102, a set of raised ribs 103 are provided; the raised ribs 103 have through holes inside. During assembly, the mounting holes on the main cover 2, the secondary cover 3, and the mounting flange 102 are aligned, and bolts are passed through the holes on the main cover 2, the mounting flange 102, the raised ribs 103, and the secondary cover 3, and then tightened with nuts, so that the outer shell 1, the main cover 2, and the secondary cover 3 are fixed as one unit. A reinforcing rib 104 is also connected between adjacent raised ribs 103 (see...). Figure 5 ).

[0029] In this embodiment, a screw hole 202 is provided on the main cover 2, which can be used to test the sealing performance of the motor cavity, and to add transformer oil to cool the motor stator after the motor is assembled.

[0030] In this embodiment, bearing A 10 and bearing B 11 are respectively embedded in the main cover 2 and the secondary cover 3; both ends of the rotating shaft 8 are inserted into bearing A 10 and bearing B 11 respectively. This reduces the coefficient of friction during the rotation of the rotating shaft 8, ensures its normal working position, provides high rotational accuracy, and facilitates use and maintenance. Furthermore, mechanical seals 12 are respectively fitted on the rotating shaft 8 between bearing A 10 and the main cover 2, and between bearing B 11 and the secondary cover 3, for sealing the motor shaft and ensuring the motor's airtightness.

[0031] In this embodiment, two lugs 601 are respectively provided on both sides of the bottom of the control box 6; the main cover 2 and the secondary cover 3 are fixed to the corresponding lugs 601 by screws. This makes assembly convenient and easy to implement. Furthermore, the motor lead wire passes through the wire hole on the sealing plug 203; the sealing plug 203 is located in the A wire outlet hole at the top of the main cover 2; the bottom of the control box 6 is correspondingly provided with a B wire outlet hole; the B wire outlet hole and the A wire outlet hole are connected by a wire outlet nut 204; a clamping washer is provided between the wire outlet nut 204 and the sealing plug 203. During assembly, first place the sealing plug 203 and the clamping washer into the A-outlet hole at the top of the main cover 2, and let the motor lead wire pass through the wire hole on the sealing plug 203; then place the control box 6 on the top of the main cover 2, align the B-outlet hole at the bottom of the control box 6 with the A-outlet hole, and then insert the wire nut 204 from the B-outlet hole and tighten it to press the control box 6 and the sealing plug 203 together.

[0032] The foregoing general description of the utility model and its specific embodiments should not be construed as limiting the technical solution of the utility model. Those skilled in the art, based on the disclosure of this application, can add, reduce, or combine the disclosed technical features in the foregoing general description and / or specific embodiments (including examples) without departing from the constituent elements of the utility model, to form other technical solutions within the protection scope of this application.

Claims

1. A corrosion-resistant motor housing, comprising an outer shell (1), a main cover (2), and a secondary cover (3); the main cover (2) and the secondary cover (3) are respectively provided with shaft holes for mounting the aerator motor shaft in their middle portions, and the main cover (2) and the secondary cover (3) are respectively located on both sides of the outer shell (1), thereby forming a motor cavity between the outer shell (1), the main cover (2), and the secondary cover (3); characterized in that: The outer casing (1) includes an annular stainless steel insert (101), and the outer walls of the stainless steel insert (101) are provided with mounting flanges (102) made of engineering plastic injection molding on both sides; the main cover (2) and the secondary cover (3) are respectively connected to the two mounting flanges (102); the inner side of the main cover (2) is provided with a stop A (201), and the inner side of the secondary cover (3) is provided with a stop B (301); the stop A (201) and the stop B (301) are respectively inserted into the stainless steel insert (101), and an O-ring (4) is provided between the stop A (201) and the stop B (301) and the stainless steel insert (101); the main cover (2) and the secondary cover (3) are made of engineering plastic injection molding, and are internally wrapped with cast iron inserts (5).

2. The corrosion-resistant motor housing according to claim 1, characterized in that: The A stop (201) and B stop (301) are respectively provided with annular grooves, and the O-ring (4) is embedded in the corresponding annular groove.

3. The corrosion-resistant motor housing according to claim 1, characterized in that: The main cover (2), the secondary cover (3), and the mounting flange (102) are fixed together by a set of bolts.

4. The corrosion-resistant motor housing according to claim 1, characterized in that: A screw hole (202) is provided on the main cover (2).

5. An aerator motor, comprising a motor housing, a control box (6) disposed on the top of the motor housing, and a rotor (7) and a stator (9) disposed inside the motor housing; characterized in that: The motor housing is made of the corrosion-resistant motor housing as described in claim 1; the two ends of the rotor (7) shaft (8) protrude from the main cover (2) and the secondary cover (3) of the motor housing, respectively.

6. The aerator motor according to claim 5, characterized in that: The main cover (2) and the secondary cover (3) are respectively embedded with bearing A (10) and bearing B (11); the two ends of the rotating shaft (8) are respectively inserted into bearing A (10) and bearing B (11).

7. The aerator motor according to claim 6, characterized in that: Mechanical seals (12) are respectively fitted on the shaft (8) between the A bearing (10) and the main cover (2) and between the B bearing (11) and the auxiliary cover (3).

8. The aerator motor according to claim 5, characterized in that: The bottom of the control box (6) is provided with a set of lugs (601); the main cover (2) and the secondary cover (3) are fixed to the corresponding lugs (601) by screws.

9. The aerator motor according to claim 8, characterized in that: The motor lead wire passes through the wire hole on the sealing plug (203); the sealing plug (203) is located in the A wire outlet hole at the top of the main cover (2); the bottom of the control box (6) is provided with a B wire outlet hole; the B wire outlet hole and the A wire outlet hole are connected by a wire outlet nut (204); a compression washer is provided between the wire outlet nut (204) and the sealing plug (203).

10. The aerator motor according to claim 5, characterized in that: The motor housing is provided with a foot (13) on each side.

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