Miniature centrifugal pump convenient for mounting rotor shaft sleeve

Abstract

The utility model provides a miniature centrifugal pump with a rotor shaft sleeve convenient to install, and relates to the technical field of miniature centrifugal pumps. The miniature centrifugal pump convenient to mount the rotor shaft sleeve comprises a pump head, a pump shell, an isolation cavity, a connecting shaft, a rotor, the rotor shaft sleeve, a stator motor and a control panel, mounting ring grooves are formed in the two ends, located in a mounting through hole in the center, of the rotor, the mounting ring grooves and the mounting through hole are coaxially arranged, and the diameter of the mounting ring grooves is larger than that of the mounting through hole; and a rotor shaft sleeve is positioned and mounted in each of the two mounting ring grooves. According to the technical scheme, the rotor shaft sleeve in the rotor can be conveniently installed through the miniature centrifugal pump convenient to install the rotor shaft sleeve.

Description

Technical Field

[0001] The utility model relates to the technical field of micro centrifugal pumps, in particular to a micro centrifugal pump which is convenient for installing a rotor sleeve. Background Art

[0002] The micro centrifugal pump uses the high-speed rotation of the impeller to drive the liquid to flow and squeeze, so that the liquid is discharged and circulated. Before starting the micro centrifugal pump, it is necessary to ensure effective connection with the liquid, fill the pump chamber with liquid, and then start the motor so that the pump shaft drives the impeller and water to rotate at high speed. The water undergoes centrifugal motion and is thrown to the outer edge of the impeller, and flows into the water pressure pipeline of the water pump through the flow channel of the volute pump casing. Micro centrifugal pumps are widely used in solar water heating systems, cooling systems, hot water circulation, household appliances and other fields.

[0003] In the structure of a traditional micro centrifugal pump, since the rotor sleeve is embedded in the rotor, for example, the micro pump with a glue-filled structure disclosed in patent document CN210218228U makes it inconvenient to install the rotor sleeve in the rotor. Therefore, it is necessary to design a micro centrifugal pump that can easily install the rotor sleeve in the rotor. Utility Model Content

[0004] In view of the above problems in the prior art, the present application proposes a micro centrifugal pump that is easy to install a rotor sleeve, which can facilitate the installation of the rotor sleeve in the rotor.

[0005] The utility model provides a micro centrifugal pump that is convenient for installing a rotor sleeve. The micro centrifugal pump that is convenient for installing a rotor sleeve comprises a pump head, a pump housing, an isolation cavity, a connecting shaft, a rotor, a rotor sleeve, a stator motor and a control board. The pump head and the isolation cavity cover the opening of the pump housing. The isolation cavity is placed in the pump housing and the pump head. The isolation cavity separates the pump housing and the cavity in the pump head into a pump cavity and a pump waterproof cavity. The rotor is placed in the pump cavity. The rotor sleeve is installed in the rotor. The connecting shaft is inserted in the rotor sleeve. Both ends of the connecting shaft are fixedly connected to the pump head and the isolation cavity respectively. The stator motor and the control board are both positioned and installed in the pump waterproof cavity. The stator motor is used to drive the rotor in the pump cavity to rotate. Both ends of the installation through hole of the rotor located in the center are provided with installation annular grooves. The installation annular groove is coaxially arranged with the installation through hole, and the diameter of the installation annular groove is larger than the diameter of the installation through hole. One rotor sleeve is positioned and installed in each of the two installation annular grooves.

[0006] As a further improvement of the above technical solution:

[0007] The above-mentioned micro centrifugal pump that is easy to install the rotor sleeve, further, has a first positioning groove on the rotor located at the lower side of the installation through hole, a positioning seat is provided at the bottom of the isolation cavity, the lower end of the connecting shaft can be inserted into the positioning seat, and the first positioning groove can be rotatably sleeved on the outer side of the positioning seat.

[0008] The above-mentioned micro centrifugal pump which is easy to install the rotor sleeve, further, has a second positioning groove on the rotor located on the upper side of the mounting through hole, a positioning bracket is provided on the pump head, the upper end of the connecting shaft is installed on the positioning bracket, and the positioning bracket can be limited in the second positioning groove and the second positioning groove can rotate relative to the positioning bracket.

[0009] The above technical features can be combined in various suitable ways or replaced by equivalent technical features as long as the purpose of the utility model can be achieved.

[0010] The utility model provides a micro centrifugal pump that is easy to install a rotor sleeve. Compared with the prior art, it has at least the following beneficial effects: when the rotor sleeve needs to be installed, the two rotor sleeves to be installed are installed in the installation ring grooves at the two ends of the installation through hole from the two ends of the installation through hole, one by one, and the connecting shaft is inserted into the two rotor sleeves, and the rotor can rotate around the connecting shaft. Compared with the existing micro centrifugal pump, the micro centrifugal pump that is easy to install a rotor sleeve can facilitate the installation of the rotor sleeve in the rotor.

[0011] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, preferred embodiments are given below and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0013] The present invention will be described in more detail below based on embodiments and with reference to the accompanying drawings.

[0014] Figure 1 A schematic diagram showing the structure of a micro centrifugal pump that is convenient for installing a rotor sleeve provided by an embodiment of the utility model;

[0015] Figure 2 A schematic diagram showing the structure of a pump head of a micro centrifugal pump that is convenient for installing a rotor sleeve provided by an embodiment of the utility model;

[0016] Figure 3 The schematic diagram of the structure of the rotor of the micro centrifugal pump provided by the embodiment of the utility model is shown, which is convenient for installing the rotor sleeve.

[0017] In the drawings, like reference numerals are used for like parts. The drawings are not necessarily to scale.

[0018] Description of reference numerals:

[0019] 100-a micro centrifugal pump for easy installation of a rotor sleeve, 110-a pump head, 111-a positioning bracket, 120-a pump housing, 130-an isolation chamber, 131-a positioning seat, 140-a connecting shaft, 150-a rotor, 151-a mounting through hole, 152-a mounting ring groove, 153-a first positioning groove, 154-a second positioning groove, 160-a rotor sleeve, 170-a stator motor, 180-a control board. DETAILED DESCRIPTION

[0020] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0021] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0022] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0023] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0024] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0025] The utility model will be further described below in conjunction with the accompanying drawings.

[0026] The embodiment of the utility model provides a micro centrifugal pump 100 that is convenient for installing a rotor sleeve, and can facilitate installing a rotor sleeve in a rotor 150 .

[0027] See also Figure 1 and Figure 2The micro centrifugal pump 100 for easy installation of a rotor sleeve provided by an embodiment of the utility model comprises a pump head 110, a pump housing 120, an isolation chamber 130, a connecting shaft 140, a rotor 150, a rotor 150 sleeve, a stator motor 170 and a control board 180. The pump head 110 and the isolation chamber 130 cover the opening of the pump housing 120. The isolation chamber 130 is placed in the pump housing 120 and the pump head 110. The isolation chamber 130 separates the cavities in the pump housing 120 and the pump head 110 into a pump chamber and a pump waterproof chamber. The rotor 150 is placed in the pump chamber. The rotor 150 sleeve It is installed in the rotor 150, and the connecting shaft 140 is inserted into the rotor 150 sleeve. The two ends of the connecting shaft 140 are fixedly connected to the pump head 110 and the isolation chamber 130 respectively. The stator motor 170 and the control board 180 are both positioned and installed in the pump waterproof chamber. The stator motor 170 is used to drive the rotor 150 in the pump chamber to rotate. Both ends of the mounting through hole 151 located in the center of the rotor 150 are provided with mounting annular grooves 152. The mounting annular grooves 152 are coaxially arranged with the mounting through hole 151, and the diameter of the mounting annular grooves 152 is larger than the diameter of the mounting through hole 151. A rotor 150 sleeve is positioned and installed in each of the two mounting annular grooves 152.

[0028] When the rotor 150 sleeve needs to be installed, the two rotor 150 sleeves to be installed are installed in the installation ring grooves 152 at both ends of the installation through hole 151 from both ends of the installation through hole 151, one by one, and the connecting shaft 140 is inserted into the two rotor 150 sleeves, and the rotor 150 can rotate around the connecting shaft 140. Compared with the existing micro centrifugal pump, the micro centrifugal pump 100 provided by the embodiment of the utility model, which is easy to install the rotor sleeve, can facilitate the installation of the rotor 150 sleeve in the rotor 150.

[0029] The micro centrifugal pump 100 provided in the embodiment of the present invention is convenient for installing the rotor sleeve. Figure 1 and Figure 2 The rotor 150 is provided with a first positioning groove 153 at the lower side of the mounting through hole 151. A positioning seat 131 is provided at the bottom of the isolation chamber 130. The lower end of the connecting shaft 140 can be inserted into the positioning seat 131, and the first positioning groove 153 can be rotatably sleeved on the outer side of the positioning seat 131. The rotor 150 is provided with a second positioning groove 154 at the upper side of the mounting through hole 151. Figure 3The pump head 110 is provided with a positioning bracket 111, and the upper end of the connecting shaft 140 is mounted on the positioning bracket 111. The positioning bracket 111 can be limited in the second positioning groove 154 and the second positioning groove 154 can rotate relative to the positioning bracket 111. When the rotor 150 rotates around the connecting shaft 140, the first positioning groove 153 sleeved on the outer side of the positioning seat 131 rotates relative to the positioning seat 131, the positioning bracket 111 is limited in the second positioning groove 154 and the second positioning groove 154 rotates relative to the positioning bracket 111, and at the same time, the middle position of the rotor 150 rotates around the connecting shaft 140 through the rotor 150 sleeve, and the first positioning groove 153, the second positioning groove 154 and the rotor 150 sleeve limit the radial position of the rotor 150 from the top, the bottom and the middle respectively, so as to ensure that the rotor 150 always rotates around the connecting shaft 140.

[0030] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0031] Although the present invention is described herein with reference to specific embodiments, it should be understood that these embodiments are merely examples of the principles and applications of the present invention. It should therefore be understood that many modifications may be made to the exemplary embodiments, and other arrangements may be designed without departing from the spirit and scope of the present invention as defined by the appended claims. It should be understood that the features described in the various dependent claims and herein may be combined in a manner different from that described in the original claims. It may also be understood that the features described in conjunction with the individual embodiments may be used in other described embodiments.

Claims

1. A micro centrifugal pump that is easy to install a rotor sleeve, the micro centrifugal pump that is easy to install a rotor sleeve comprises a pump head, a pump housing, an isolation chamber, a connecting shaft, a rotor, a rotor sleeve, a stator motor and a control board, characterized in that: Both ends of the mounting through hole in the center of the rotor are provided with mounting annular grooves, the mounting annular grooves are coaxially arranged with the mounting through hole, and the diameter of the mounting annular grooves is larger than the diameter of the mounting through hole, and a rotor sleeve is positioned and installed in each of the two mounting annular grooves.

2. The micro centrifugal pump for easy installation of a rotor sleeve according to claim 1, characterized in that: A first positioning groove is provided on the rotor at the lower side of the mounting through hole, a positioning seat is provided at the bottom of the isolation cavity, the lower end of the connecting shaft can be inserted into the positioning seat, and the first positioning groove can be rotatably sleeved on the outer side of the positioning seat.

3. The micro centrifugal pump for easy installation of a rotor sleeve according to claim 2, characterized in that: A second positioning groove is provided on the rotor at the upper side of the mounting through hole, a positioning bracket is provided on the pump head, the upper end of the connecting shaft is mounted on the positioning bracket, the positioning bracket can be limited in the second positioning groove and the second positioning groove can rotate relative to the positioning bracket.

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