Water pump motor with closed low-loss fan

Abstract

The utility model discloses a water pump motor with a closed low-loss fan, and relates to the technical field of motor equipment. The end face of the machine shell is detachably provided with a rear shell cover, the inner side wall of the rear shell cover is fixedly connected with sound insulation cotton, a rotating shaft is arranged in the machine shell, the side wall of the rotating shaft is fixedly connected with a key strip, the side wall of the rotating shaft is sleeved with a shaft sleeve, the outer side wall of the shaft sleeve is fixedly connected with fan blades, and the shaft end of the rotating shaft is detachably provided with a protective sleeve; according to the utility model, the tail part of the fan is of a sealed structure, so that the tail shaft of the water pump motor can be effectively prevented from rusting and corrosion, the protection of the motor is improved, the service life is further prevented from being influenced, the operation noise of the motor can be reduced, and slipping between the rotating shaft and the shaft sleeve can be effectively prevented; and through the arranged limiting plate, the shaft sleeve can be further prevented from sliding on the rotating shaft during long-term use.

Description

Technical Field

[0001] The utility model relates to the technical field of motor equipment, in particular to a water pump motor with a closed low-loss fan. Background Art

[0002] After searching, a high-efficiency heat dissipation water pump motor fan blade with a publication (announcement) number of "CN217206911U" is found, including a motor with an output shaft and a motor fan blade body, the motor fan blade body is composed of a circular fan blade disk, a sleeve located in the center of the fan blade disk, and a rectangular blade connection part and a blade part evenly distributed on the outer peripheral wall of the sleeve, the rectangular blade connection part and the blade part are both vertically connected to the circular fan blade disk, and the blade connection part and the blade part are both provided with reinforcing ribs, the blade connection part and the blade part are both rectangular and vertically arranged on the circular fan blade disk, and the axial height of the blade part is higher than the height of the blade connection part, and the sleeve is connected to one end of the water pump motor output shaft by an interference fit.

[0003] Although the high-efficiency heat dissipation water pump motor fan blade with the publication (announcement) number of "CN217206911U" has the advantages of high heat dissipation effect and strong versatility without limiting the motor steering, there are still some shortcomings. First, the shaft sleeve hole in the high-efficiency heat dissipation water pump motor fan blade is a through hole. After the fan blade and the motor tail shaft are assembled, the motor tail shaft is exposed, so the motor tail shaft is prone to rust and corrosion; second, the high-efficiency heat dissipation water pump motor fan blade, its shaft sleeve and the water pump motor output shaft are connected to one end of the water pump motor output shaft through an interference fit, so that after the motor runs for a long time, the motor shaft and the fan blade are prone to slippage, and the noise reduction effect is not good. In view of the above problems, the inventor proposes a water pump motor with a closed low-loss fan to solve the above problems. Utility Model Content

[0004] In order to understand the problem that the tail shaft of the existing water pump motor is prone to rust and corrosion and there is slippage between the motor shaft and the fan blades; the purpose of the utility model is to provide a water pump motor with a closed low-loss fan.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions: a water pump motor with a closed low-loss fan, comprising a casing, the end face of the casing is detachably provided with a rear casing cover, the inner side wall of the rear casing cover is fixedly connected with sound insulation cotton, a rotating shaft is arranged inside the casing, the side wall of the rotating shaft is fixedly connected with a key strip, the side wall sleeve of the rotating shaft is provided with a shaft sleeve, the outer side wall of the shaft sleeve is fixedly connected with a fan blade, and the shaft end of the rotating shaft is detachably provided with a protective sleeve.

[0006] Preferably, the bottom surface of the casing is fixedly connected to a base, the side of the base facing away from the casing is fixedly connected to a base, the base is used to support the casing, the base is used to support the base, the inner side wall of the sound insulation cotton is fixedly connected to a sound absorbing strip, there are several sound absorbing strips, and the several sound absorbing strips are distributed in an array with the axis of the rear casing cover as the center, the sound insulation cotton and the sound absorbing strip can reduce the noise generated when the fan blades rotate, thereby reducing noise pollution.

[0007] Preferably, a through opening is provided in the middle of the side wall of the sleeve, and the through opening corresponds to and cooperates with the rotating shaft, and a key groove is provided on the inner wall of the through opening, and the key groove corresponds to and engages with the key strip, and there are a plurality of key grooves and key strips. Through the engagement of the key strip and the key groove, the rotating shaft and the sleeve can be effectively prevented from slipping after the water pump motor runs for a long time, and a threaded hole is provided on the side of the key strip facing away from the rotating shaft, and a transverse plate is provided on one side of the sleeve, and a through hole is provided on the top surface of the transverse plate, and the through hole corresponds to the threaded hole and has the same hole diameter, and a fastening bolt is provided on one side of the transverse plate, and the fastening bolt passes through The through hole corresponds to and cooperates with the threaded hole, and the end face of the cross plate is fixedly connected to the limit plate, and the side of the limit plate facing away from the cross plate contacts the side wall of the shaft sleeve. The through hole corresponds to the threaded hole, and the end face of the limit plate contacts the side wall of the shaft sleeve. The fastening bolt is turned so that the rod of the fastening bolt passes through the through hole and cooperates with the threaded hole until the rod of the fastening bolt is located in the threaded hole and the head of the fastening bolt is in close contact with the top surface of the cross plate, thereby limiting the cross plate, and then limiting the limit plate to prevent the limit plate from rotating. The set limit plate is used to prevent the shaft sleeve from sliding on the rotating shaft during long-term use.

[0008] Preferably, the outer wall of the rotating shaft is provided with an external thread, and the inner wall of the protective sleeve is provided with an internal thread. The internal thread corresponds to and cooperates with the external thread. The protective sleeve is screwed and the internal thread cooperates with the external thread to install the protective sleeve on the tail of the rotating shaft, thereby preventing the tail shaft of the water pump motor from rusting and corrosion, thereby avoiding affecting the service life.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] 1. In the utility model, the tail of the fan is a sealed structure. The protective cover can be installed on the tail of the rotating shaft through the cooperation of the internal thread and the external thread, so as to prevent the tail shaft of the water pump motor from rusting and corrosion, thereby improving the protection of the motor and avoiding affecting the service life;

[0011] 2. The utility model can reduce the noise generated when the fan blades rotate by the sound insulation cotton and the sound absorbing strip, thereby reducing noise pollution. A key strip is provided on the rotating shaft, and a key slot is provided in the shaft sleeve. The interference fit between the key strip and the key slot can effectively prevent the rotating shaft and the shaft sleeve from slipping after the water pump motor has been running for a long time. The limit plate can further prevent the shaft sleeve from sliding on the rotating shaft during long-term use. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0014] Figure 2 This is an exploded view of the utility model.

[0015] Figure 3 This is a schematic diagram of the cooperation between the shaft sleeve and the rotating shaft of the utility model.

[0016] Figure 4 It is an enlarged view of point A of the present utility model.

[0017] In the figure: 1. Casing; 2. Base; 3. Base; 4. Back cover; 5. Sound insulation cotton; 6. Sound-absorbing strip; 7. Rotating shaft; 8. Key strip; 9. Threaded hole; 10. Bushing; 11. Through port; 12. Keyway; 13. Horizontal plate; 14. Through hole; 15. Limit plate; 16. Fastening bolt; 17. Fan blade; 18. Protective cover; 19. Internal thread; 20. External thread. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] Example: Figure 1-4As shown, the utility model provides a water pump motor with a closed low-loss fan, including a casing 1, a rear casing cover 4 is detachably provided on the end face of the casing 1, a sound insulation cotton 5 is fixedly connected to the inner wall of the rear casing cover 4, a rotating shaft 7 is arranged inside the casing 1, a key strip 8 is fixedly connected to the side wall of the rotating shaft 7, a shaft sleeve 10 is provided on the side wall sleeve of the rotating shaft 7, a fan blade 17 is fixedly connected to the outer wall of the shaft sleeve 10, and a protective sleeve 18 is detachably provided on the shaft end of the rotating shaft 7.

[0020] The bottom surface of the casing 1 is fixedly connected to a base 2 , and the side of the base 2 facing away from the casing 1 is fixedly connected to a base 3 .

[0021] By adopting the above technical solution, the base 2 is used to support the housing 1 , and the base 3 is used to support the base 2 .

[0022] The inner side wall of the sound insulation cotton 5 is fixedly connected with a sound absorbing strip 6 . There are several sound absorbing strips 6 , and the several sound absorbing strips 6 are distributed in an array with the axis of the rear shell cover 4 as the center.

[0023] By adopting the above technical solution, the noise generated when the fan blades 17 rotate can be reduced by the sound insulation cotton 5 and the sound absorbing strip 6, thereby reducing noise pollution.

[0024] A through opening 11 is provided through the middle of the side wall of the shaft sleeve 10 , and the through opening 11 corresponds to and matches the rotating shaft 7 . A key groove 12 is provided on the inner wall of the through opening 11 , and the key groove 12 corresponds to and engages with the key bar 8 .

[0025] By adopting the above technical solution, a plurality of key slots 12 and key strips 8 are provided. By engaging the key strips 8 with the key slots 12, slippage between the rotating shaft 7 and the shaft sleeve 10 can be effectively prevented after the water pump motor has been running for a long time.

[0026] The outer wall of the rotating shaft 7 is provided with an external thread 20 , and the inner wall of the protective sleeve 18 is provided with an internal thread 19 , and the internal thread 19 corresponds to and matches the external thread 20 .

[0027] By adopting the above technical solution, the protective sleeve 18 is screwed, and the protective sleeve 18 can be installed on the tail of the rotating shaft 7 through the mutual cooperation of the internal thread 19 and the external thread 20, so as to prevent the tail shaft of the water pump motor from rusting and corrosion, thereby avoiding affecting the service life.

[0028] A threaded hole 9 is penetrated by one side of the key bar 8 facing away from the rotating shaft 7, a transverse plate 13 is provided on one side of the shaft sleeve 10, a through hole 14 is penetrated by the top surface of the transverse plate 13, the through hole 14 corresponds to the threaded hole 9 and has the same hole diameter, a fastening bolt 16 is provided on one side of the transverse plate 13, the fastening bolt 16 penetrates through the through hole 14 and corresponds to and cooperates with the threaded hole 9, the end face of the transverse plate 13 is fixedly connected to a limiting plate 15, and the side of the limiting plate 15 facing away from the transverse plate 13 is in contact with the side wall of the shaft sleeve 10.

[0029] By adopting the above technical solution, the through hole 14 is made to correspond to the threaded hole 9, and the end face of the limit plate 15 is made to contact the side wall of the sleeve 10, and the fastening bolt 16 is screwed so that the rod of the fastening bolt 16 passes through the through hole 14 and cooperates with the threaded hole 9 until the rod of the fastening bolt 16 is located in the threaded hole 9, and the head of the fastening bolt 16 is made to contact closely with the top surface of the cross plate 13, so that the cross plate 13 can be limited, and then the limit plate 15 can be limited to prevent the limit plate 15 from rotating. The set limit plate 15 is used to prevent the sleeve 10 from sliding on the rotating shaft 7 during long-term use.

[0030] Working principle: When the utility model is in use, the key bar 8 and the key slot 12 are engaged, so that after the water pump motor has been running for a long time, it can effectively prevent the rotating shaft 7 and the shaft sleeve 10 from slipping. The through hole 14 is made to correspond to the threaded hole 9, and the end face of the limit plate 15 is made to contact the side wall of the shaft sleeve 10. The fastening bolt 16 is screwed so that the rod of the fastening bolt 16 passes through the through hole 14 and cooperates with the threaded hole 9 until the rod of the fastening bolt 16 is located in the threaded hole 9, and the head of the fastening bolt 16 is made to contact closely with the top surface of the cross plate 13, so that the cross plate 13 can be limited, and then the limit plate 15 can be limited to prevent the limit plate 15 from rotating. The set limit plate 15 is used to prevent the shaft sleeve 10 from sliding on the rotating shaft 7 during long-term use;

[0031] By screwing the protective sleeve 18, the internal thread 19 and the external thread 20 cooperate with each other, so that the protective sleeve 18 can be installed on the tail of the rotating shaft 7, so as to prevent the tail shaft of the water pump motor from rusting and corrosion, thereby avoiding affecting the service life. The noise generated by the rotation of the fan blades 17 can be reduced by the sound insulation cotton 5 and the sound absorbing strip 6, thereby reducing noise pollution.

[0032] Obviously, those skilled in the art can make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A water pump motor with a closed low-loss fan, comprising a housing (1), characterized in that: The end surface of the housing (1) is detachably provided with a rear housing cover (4), the inner side wall of the rear housing cover (4) is fixedly connected with a sound insulation cotton (5), a rotating shaft (7) is arranged inside the housing (1), the side wall of the rotating shaft (7) is fixedly connected with a key bar (8), the side wall of the rotating shaft (7) is sleeved with a shaft sleeve (10), the outer side wall of the shaft sleeve (10) is fixedly connected with a fan blade (17), and the shaft end of the rotating shaft (7) is detachably provided with a protective sleeve (18).

2. A water pump motor with a closed low-loss fan as claimed in claim 1, characterized in that: The bottom surface of the casing (1) is fixedly connected to a base (2), and the side of the base (2) facing away from the casing (1) is fixedly connected to a pedestal (3).

3. A water pump motor with a closed low-loss fan as claimed in claim 1, characterized in that: The inner side wall of the sound insulation cotton (5) is fixedly connected with a sound absorbing strip (6), and there are a plurality of the sound absorbing strips (6), and the plurality of the sound absorbing strips (6) are distributed in an array with the axis of the rear shell cover (4) as the center.

4. A water pump motor with a closed low-loss fan as claimed in claim 1, characterized in that: A through opening (11) is provided through the middle of the side wall of the shaft sleeve (10), and the through opening (11) corresponds to and matches the rotating shaft (7).

5. A water pump motor with a closed low-loss fan as claimed in claim 4, characterized in that: The inner wall of the through opening (11) is provided with a key groove (12), and the key groove (12) corresponds to and engages with the key bar (8).

6. A water pump motor with a closed low-loss fan as claimed in claim 1, characterized in that: The outer wall of the rotating shaft (7) is provided with an external thread (20), and the inner wall of the protective sleeve (18) is provided with an internal thread (19), and the internal thread (19) corresponds to and matches the external thread (20).

7. A water pump motor with a closed low-loss fan as claimed in claim 1, characterized in that: A threaded hole (9) is provided through the side of the key bar (8) facing away from the rotating shaft (7), a transverse plate (13) is provided on one side of the shaft sleeve (10), a through hole (14) is provided through the top surface of the transverse plate (13), and the through hole (14) corresponds to the threaded hole (9) and has the same hole diameter.

8. A water pump motor with a closed low-loss fan as claimed in claim 7, characterized in that: A fastening bolt (16) is provided on one side of the transverse plate (13), and the fastening bolt (16) passes through the through hole (14) and corresponds to and cooperates with the threaded hole (9). The end surface of the transverse plate (13) is fixedly connected to a limiting plate (15), and a side of the limiting plate (15) facing away from the transverse plate (13) contacts the side wall of the shaft sleeve (10).

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