Miniature water pump capable of reading rotating speed of motor

Abstract

The utility model belongs to the technical field of miniature direct-current water pumps, and particularly relates to a miniature water pump capable of reading the rotating speed of a motor, which comprises the motor, a bottom shell, a magnetic induction element plate, two magnets, a transmission part, a compression cavity push-pull rod, a compression cavity fixing frame, a compression cavity, three water inlet valve plates, a water inlet / outlet valve frame, a water outlet valve plate, a sealing gasket and a water inlet / outlet cover, the motor is fixedly installed at the bottom of the bottom shell, an output shaft of the motor penetrates through the bottom shell and extends into an inner cavity of the bottom shell, the transmission part is fixedly installed on the output shaft of the motor, fixing blocks are symmetrically and fixedly installed on the transmission part, rectangular grooves are formed in the bottoms of the two fixing blocks, and the two magnets are installed in the two rectangular grooves in a clamped mode respectively. A groove is formed in the inner wall of the bottom shell, the stress element plate is clamped and installed in the groove, the compression cavity fixing frame is installed on the bottom shell, the compression cavity push-pull rod is installed on the bottom shell, it is ensured that the whole structure is concise and attractive, the manufacturing process is convenient to operate, and the productivity is improved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of micro direct current water pump, especially relates to a micro water pump of reading motor speed. BACKGROUND

[0002] The micro water pump of motor speed usually refers to the micro direct current water pump driven by the direct current brushless motor. The water pump has the speed regulation function, can adjust the flow in a certain range, and is therefore also called the micro speed regulation water pump. The basic working principle is driven by the direct current brushless motor, has the water inlet and the water outlet, can form the vacuum or the negative pressure at the inlet, and forms the larger output pressure at the water outlet. The working medium is water or liquid, and the volume is small and exquisite.

[0003] For example, the Chinese patent with the announcement number CN217539799U discloses a device for precisely controlling flow, which comprises a bottom cover structure, a cavity penetrating through the upper end of the bottom cover structure is arranged in the bottom cover structure, a motor is fixedly installed at the lower end of the bottom cover structure, the output end of the motor is movably penetrated through the lower end face of the bottom cover structure and extends into the cavity of the bottom cover structure, an eccentric wheel is drivingly connected to the output end of the motor, and a steel ball and a magnet are clamped at the upper end of the eccentric wheel. The motor drives the eccentric wheel to rotate, the magnet installed in the eccentric wheel senses the sensing area of the Hall sensor once every time, the Hall sensor senses once and sends an output signal, the output signal is transmitted to the application device through the wire on the PCB in the Hall sensor, the application device adjusts the rotating speed of the motor, thereby precisely controlling the flow of the product, accurately controlling the water output, reducing the deviation of the water output, and improving the use experience of the end customer.

[0004] The above patent has the following problems:

[0005] The driving motor of the micro direct current water pump is difficult to control due to the complex process and material precision, so that the rotating speed of each driving motor is inconsistent (rotating speed tolerance ±10%), thereby causing a large deviation of the water output of the micro direct current water pump, and it is difficult to achieve the application effect. In view of this, we propose a micro water pump capable of reading the rotating speed of the motor. UTILITY MODEL CONTENTS

[0006] The utility model discloses a micro water pump of readable motor rotating speed, including motor, bottom shell, magnetic induction element board, two magnet, transmission component, compression cavity push -and -pull rod, compression cavity fixing frame, compression cavity, three water inlet valve sheet, inlet and outlet water valve frame, water outlet valve sheet, gasket and inlet and outlet water gap cover, the motor fixed mounting is at the bottom of bottom shell, and the output shaft of motor extends to its inner chamber in the bottom shell, transmission component fixed mounting is on the output shaft of motor, and the fixed block is fixedly installed on transmission component symmetry, and the bottom of two fixed blocks all is equipped with rectangular groove, two the magnet is clamped and installed in two rectangular grooves, the inner wall of bottom shell is equipped with recess, the magnetic induction element board is clamped and installed in recess, compression cavity fixing frame installs on bottom shell, and compression cavity push -and -pull rod installs between transmission component and compression cavity fixing frame, compression cavity sets up on compression cavity fixing frame, three water inlet valve sheet is inserted and is installed in inlet and outlet water valve frame, and inlet and outlet water valve frame installs on compression cavity, water outlet valve sheet installs in gasket, gasket installs in inlet and outlet water gap cover, and inlet and outlet water gap cover installs on inlet and outlet water valve frame.

[0007] In the technical scheme, the magnets are arranged in the transmission component of the motor output shaft, the number of the magnets is two, and the arrangement mode is that rectangular grooves are formed in the plane opposite to the motor output shaft of the transmission component, and the number of the rectangular grooves is two, for placing the two magnets.

[0008] The magnetic induction element is arranged on the inner side wall of the bottom shell, for sensing the magnet signal in the transmission component, and the arrangement mode is that the axial recesses are formed in the inner side wall of the bottom shell, in the form of square holes, and the opening direction is the same as the direction of the motor output shaft, the recesses are used for placing the magnetic induction element board; the magnetic induction element board has lead wires leading out of the bottom shell.

[0009] In the technical scheme, the magnets are arranged in the transmission component of the motor output shaft, the number of the magnets is two, and the arrangement mode is that rectangular grooves are formed in the plane opposite to the motor output shaft of the transmission component, and the number of the rectangular grooves is two, for placing the two magnets.

[0010] In the technical scheme, the magnets are arranged in the transmission component of the motor output shaft, the number of the magnets is two, and the arrangement mode is that rectangular grooves are formed in the plane opposite to the motor output shaft of the transmission component, and the number of the rectangular grooves is two, for placing the two magnets.

[0011] In the technical scheme, the magnets are arranged in the transmission component of the motor output shaft, the number of the magnets is two, and the arrangement mode is that rectangular grooves are formed in the plane opposite to the motor output shaft of the transmission component, and the number of the rectangular grooves is two, for placing the two magnets.

[0012] In the technical scheme, the magnets are arranged in the transmission component of the motor output shaft, the number of the magnets is two, and the arrangement mode is that rectangular grooves are formed in the plane opposite to the motor output shaft of the transmission component, and the number of the rectangular grooves is two, for placing the two magnets.

[0013] In the technical scheme, the magnets are arranged in the transmission component of the motor output shaft, the number of the magnets is two, and the arrangement mode is that rectangular grooves are formed in the plane opposite to the motor output shaft of the transmission component, and the number of the rectangular grooves is two, for placing the two magnets.

[0014] In the technical solution, the structure stability of the water inlet valve plate, the sealing gasket and the water outlet valve plate is ensured.

[0015] In the above technical solution, further, the three bottom ends on the compression cavity are all penetrated through the compression cavity fixing frame and located at the circumferential side of the compression cavity push-pull rod.

[0016] In the technical solution, the three bottom ends on the compression cavity can limit the compression cavity push-pull rod.

[0017] In the above technical solution, further, the transmission component and the fixing block are in an integral molding structure, and in the technical solution, the structure stability of the transmission component and the fixing block is ensured.

[0018] The beneficial effects of the utility model are:

[0019] 1. The micro water pump of reading motor rotating speed, through setting bottom shell, recess, magnetic induction element board, magnet, transmission component, rectangular groove, compression cavity push-pull rod, compression cavity fixing frame, compression cavity, water inlet valve plate, water inlet and outlet valve frame, water outlet valve plate, sealing gasket and water inlet and outlet cover, solve the problem that the driving motor of micro direct current water pump is difficult to control the material precision because of its complex technology, and the rotating speed index of each driving motor is inconsistent (rotating speed tolerance ± 10%), thereby causing the water output of micro direct current water pump to have large deviation and being difficult to achieve application effect.

[0020] 2. The micro water pump of reading motor rotating speed, the magnet is arranged in the transmission component of motor output shaft, the number of magnet is two, and the arrangement mode is that the rectangular groove is formed in the plane opposite to the motor output shaft of transmission component, and the number is two, which is used for placing two magnets. The magnetic induction element is arranged on the inner side wall of bottom shell, which is used for sensing the magnet signal in transmission component, and the arrangement mode is that the axial recess is formed in the inner side wall of motor mounting bottom shell to form square hole, the opening direction is same as the direction of motor output shaft, and the recess is used for placing the magnetic induction element board. The magnetic induction element board has lead wire leading out of the bottom shell. After the above technical implementation, the whole structure is simple, beautiful, convenient to operate in the manufacturing process, and the production capacity is improved. ACCURACY OF DRAWINGS

[0021] Figure 1 It is the overall structure schematic diagram of the utility model:

[0022] Figure 2 It is the explosion structure schematic diagram of the overall structure in the utility model:

[0023] Figure 3 It is the internal detailed structure schematic diagram of bottom shell, compression cavity fixing frame, water inlet and outlet valve frame and water inlet and outlet cover in the utility model:

[0024] Figure 4 It is the sectional structure schematic diagram of bottom shell in the utility model:

[0025] Figure 5 Figure is a sectional view of the transmission component of the utility model.

[0026] The figure mark is:

[0027] 1, motor: 2, bottom shell; 21, recess; 3, magnetic induction element plate; 4, magnet; 5, transmission component; 51, rectangular groove; 6, compression chamber push-pull rod; 7, compression chamber fixing frame; 8, compression chamber; 9, water inlet valve piece; 10, water inlet and outlet valve frame; 11, water outlet valve piece; 12, sealing gasket; 13, water inlet and outlet cover. DETAILED DESCRIPTION

[0028] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, instead of all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art belong to the scope of protection of the present application.

[0029] In the description of the present application, it should be noted that the terms used herein are only for describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The technology, methods and devices known to those skilled in the art may not be discussed in detail, but should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so that once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0030] It should be noted that the terms "first", "second" and the like in the specification and claims of the present application are used to distinguish similar objects, and are not intended to describe a specific order or sequence. It should be understood that the data used in this way can be exchanged under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described herein, and the objects distinguished by "first", "second" and the like are generally a class, and do not limit the number of objects, for example, the first object can be one or more. In addition, "and / or" in the specification and claims indicates at least one of the connected objects, and the character " / ", generally indicates that the front and rear associated objects are in a "or" relationship.

[0031] It should be noted that, in the description of the present application, the orientation words such as "front, back, upper, lower, left, right", "transverse, vertical, perpendicular, horizontal" and "top, bottom" and the like indicated orientation or position relationship is generally based on the orientation or position relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, without making the opposite statement, these orientation words do not indicate and imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the scope of protection of the present application; the orientation words "inner, outer" refer to the inner and outer relative to the contour of each component itself.

[0032] It should be noted that in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations, the element defined by the sentence "comprises a" does not exclude the existence of other identical elements in the process, method, article or device including the element. In addition, it should be pointed out that the scope of the methods and devices in the embodiments of the present application is not limited to performing functions in the order shown or discussed, but can also include performing functions in a substantially simultaneous manner or in the opposite order according to the functions involved, for example, the described method can be performed in an order different from that described, and various steps can also be added, omitted or combined. In addition, the features described with reference to certain examples can be combined in other examples.

[0033] Example 1:

[0034] Please refer to Figures 1-5As shown in the figure, the embodiment provides a micro water pump capable of reading motor rotating speed, comprising a motor 1, a bottom shell 2, a magnetic induction element plate 3, two magnets 4, a transmission component 5, a compression cavity push-pull rod 6, a compression cavity fixing frame 7, a compression cavity 8, three water inlet valve pieces 9, a water inlet and outlet valve frame 10, a water outlet valve piece 11, a sealing gasket 12 and a water inlet and outlet cover 13. The motor 1 is fixedly installed at the bottom of the bottom shell 2, and the output shaft of the motor 1 extends into the inner cavity of the bottom shell 2 through the bottom shell 2. The transmission component 5 is fixedly installed on the output shaft of the motor 1, and the transmission component 5 is symmetrically fixedly installed with fixed blocks, and the bottom of each fixed block is provided with a rectangular groove 51. The two magnets 4 are respectively clamped and installed in the two rectangular grooves 51. A recess 21 is formed in the inner wall of the bottom shell 2, and the magnetic induction element plate 3 is clamped and installed in the recess 21. The compression cavity fixing frame 7 is installed on the bottom shell 2, and the compression cavity push-pull rod 6 is installed between the transmission component 5 and the compression cavity fixing frame 7. The compression cavity 8 is arranged on the compression cavity fixing frame 7. The three water inlet valve pieces 9 are inserted and installed in the water inlet and outlet valve frame 10, and the water inlet and outlet valve frame 10 is installed on the compression cavity 8. The water outlet valve piece 11 is installed in the sealing gasket 12, and the sealing gasket 12 is installed in the water inlet and outlet cover 13, and the water inlet and outlet cover 13 is installed on the water inlet and outlet valve frame 10.

[0035] Among them, the magnets 4 are arranged in the transmission component 5 of the output shaft of the motor 1, the number of the magnets 4 is two, and the arrangement mode is that the rectangular grooves 51 are formed in the plane opposite to the output shaft of the motor 1 of the transmission component 5, and the number of the rectangular grooves 51 is two, which are used for placing the two magnets 4.

[0036] The magnetic induction element 3 (Hall element) is arranged on the inner side wall of the bottom shell 2 for magnetic induction, which is used for sensing the magnet 4 signal in the transmission component 5. The arrangement mode is that the motor 1 is installed on the inner side wall of the bottom shell 2, an axial recess 21 in the form of a square hole is formed, the opening direction is the same as the direction of the output shaft of the motor 1, and the recess 21 is used for placing the magnetic induction element plate 3. The magnetic induction element plate 3 has a lead wire leading out of the bottom shell 2. After the above technical implementation, the whole structure is simple, beautiful, convenient to operate in the manufacturing process, and the production capacity is improved.

[0037] Embodiment 2:

[0038] The embodiment provides a micro water pump capable of reading motor rotating speed, in addition to the technical scheme of the above embodiment, further comprising the following technical features: the magnet 4 is in a rectangular structure, and the size of the magnet 4 is matched with the size of the rectangular groove 51.

[0039] Among them, the magnet 4 is conveniently fixedly installed in the rectangular groove 51.

[0040] Embodiment 3:

[0041] The embodiment provides a micro water pump capable of reading motor rotating speed, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, three water inlet valve sheets 9 are arranged in a ring shape at equal intervals, and the upper ends of the three water inlet valve sheets 9 all penetrate the water inlet and outlet valve frame 10 and extend into the sealing gasket 12.

[0042] Among them, ensure the structural stability of the three water inlet valve sheets 9, the water inlet and outlet valve frame 10 and the sealing gasket 12.

[0043] Embodiment 4:

[0044] The embodiment provides a micro water pump capable of reading motor rotating speed, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the upper end of the water inlet valve sheet 9 is inserted and matched with the sealing gasket 12, and the water outlet valve sheet 11 is located at the middle position of the sealing gasket 12.

[0045] Among them, ensure the structural stability of the water inlet valve sheet 9, the sealing gasket 12 and the water outlet valve sheet 11.

[0046] Embodiment 5:

[0047] The embodiment provides a micro water pump capable of reading motor rotating speed, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the three bottom ends on the compression cavity 8 all penetrate the compression cavity fixing frame 7 and are located at the circumferential side of the compression cavity push-pull rod 6.

[0048] Among them, the three bottom ends on the compression cavity 8 can limit the compression cavity push-pull rod 6.

[0049] Embodiment 6:

[0050] The embodiment provides a micro water pump capable of reading motor rotating speed, in addition to comprising the technical scheme of the above embodiment, further has the following technical features, the transmission component 5 and the fixed block are in an integral molding structure.

[0051] Among them, ensure the structural stability of the transmission component 5 and the fixed block.

[0052] The embodiments of the application are described above in combination with the drawings, the embodiments in the application and the features in the embodiments can be combined with each other without conflict, the application is not limited to the above specific implementation, the above specific implementation is only illustrative, rather than limiting, and those skilled in the art can make many forms under the inspiration of the application without departing from the purpose of the application and the scope protected by the claims, and all forms belong to the protection of the application.

Claims

1. A miniature water pump capable of reading motor speed, comprising a motor (1), a base shell (2), a magnetic induction element board (3), two magnets (4), a transmission component (5), a compression chamber push-pull rod (6), a compression chamber fixing frame (7), a compression chamber (8), three inlet valve plates (9), inlet and outlet valve frames (10), an outlet valve plate (11), a sealing gasket (12), and inlet and outlet caps (13), characterized in that, The motor (1) is fixedly installed at the bottom of the base shell (2), and the output shaft of the motor (1) extends through the base shell (2) into its inner cavity. The transmission component (5) is fixedly installed on the output shaft of the motor (1), and fixed blocks are symmetrically fixedly installed on the transmission component (5). Rectangular slots (51) are opened at the bottom of the two fixed blocks. The two magnets (4) are respectively snapped into the two rectangular slots (51). A groove (21) is opened on the inner wall of the base shell (2), and the magnetic induction element plate (3) is snapped into the groove (21). The compression The cavity fixing bracket (7) is installed on the bottom shell (2), and the compression cavity push-pull rod (6) is installed between the transmission component (5) and the compression cavity fixing bracket (7). The compression cavity (8) is set on the compression cavity fixing bracket (7). The three water inlet valve plates (9) are inserted and installed in the water inlet and outlet valve bracket (10), and the water inlet and outlet valve bracket (10) is installed on the compression cavity (8). The water outlet valve plate (11) is installed in the sealing gasket (12). The sealing gasket (12) is installed in the water inlet and outlet cover (13), and the water inlet and outlet cover (13) is installed on the water inlet and outlet valve bracket (10).

2. A miniature water pump with readable motor speed according to claim 1, characterized in that, The magnet (4) has a rectangular structure, and the magnet (4) and the rectangular groove (51) are matched in size.

3. A miniature water pump with readable motor speed according to claim 1, characterized in that, The three inlet valve plates (9) are arranged in a ring with equal spacing, and the upper ends of the three inlet valve plates (9) all penetrate the inlet and outlet valve frame (10) and extend into the sealing gasket (12).

4. A miniature water pump with readable motor speed according to claim 1, characterized in that, The upper end of the inlet valve plate (9) is inserted into the sealing gasket (12), and the outlet valve plate (11) is located in the middle of the sealing gasket (12).

5. A miniature water pump with readable motor speed according to claim 1, characterized in that, The three bottom ends of the compression chamber (8) all penetrate the compression chamber fixing frame (7) and are located around the compression chamber push-pull rod (6).

6. A miniature water pump with readable motor speed according to claim 1, characterized in that, The transmission component (5) and the fixing block are integrally formed.

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