A pump for supplying liquid

Abstract

This utility model discloses a liquid supply pump, belonging to the technical field of liquid supply pumps. The liquid supply pump includes: a housing, a bracket, a rotor, an impeller, windings, a circuit board, a sealing ring, and screws. The bracket is installed on the housing by screws, and the sealing ring is disposed between the housing and the bracket. The bracket and housing together enclose an inner cavity. The rotor and windings are installed on the bracket, and the impeller is installed on the rotor. The rotor and impeller are disposed within the inner cavity. The windings and circuit board are installed at the end of the bracket away from the inner cavity. The end of the bracket away from the inner cavity is filled with potting compound, so that the windings and circuit board are disposed within the potting compound. This utility model solves the problems of inconvenient disassembly and maintenance of the inner cavity in existing technologies, high requirements for the potting compound process due to the windings being disposed within the inner cavity, and the complex sealing process at the end of the bracket away from the inner cavity.

Description

Technical Field

[0001] This utility model belongs to the field of liquid supply pump technology, specifically a liquid supply pump. Background Technology

[0002] Chinese invention patent CN 118188391 A, published on June 14, 2024, entitled "High-Sealing Liquid Supply Pump," describes a design where the outer casing is fitted onto a bracket, and the rotor, impeller, and windings are all housed within an inner cavity between the outer casing and the bracket. The circuit board is mounted on the end of the bracket furthest from the inner cavity, and this end is sealed with a bottom cover and potting compound. This structure has the following problems: 1. It is inconvenient to inspect the inner cavity, which is prone to impurities; 2. The high requirements for the potting compound process due to the windings being located within the inner cavity; 3. The complex process of positioning the bottom cover before sealing with potting compound. Utility Model Content

[0003] Purpose of the utility model: To provide a liquid supply pump that facilitates the inspection and cleaning of the internal cavity, reduces the sealing difficulty of the windings, and reduces the number of potting process steps.

[0004] The technical solution of this utility model is as follows: a liquid supply pump includes: a housing, a bracket, a rotor, an impeller, a winding, a circuit board, a sealing ring, and screws.

[0005] The bracket is installed on the outer shell by screws, the sealing ring is disposed between the outer shell and the bracket, and the bracket and the outer shell together enclose an inner cavity.

[0006] The rotor and windings are mounted on a bracket.

[0007] The impeller is mounted on the rotor, and the rotor and impeller are disposed within the inner cavity.

[0008] The winding and circuit board are mounted on the end of the bracket away from the inner cavity. The end of the bracket away from the inner cavity is filled with potting compound, so that the winding and circuit board are placed inside the potting compound.

[0009] In a further embodiment, the circuit board is mounted at the end of the winding away from the inner cavity, facilitating the connection and routing of the circuit board to the winding.

[0010] In a further embodiment, the bracket is provided with a sealing groove, and the sealing ring is disposed in the sealing groove.

[0011] In a further embodiment, the bracket has a protruding structure on the side near the inner cavity, and the outer shell is fitted onto the protruding structure.

[0012] In a further embodiment, the outer shell and the raised structure are fitted with a clearance, further ensuring the sealing effect.

[0013] The beneficial effects of this utility model include: First, by using screws, sealing rings, outer shell and brackets together, the outer shell and brackets can be disassembled and connected. Only the screws and sealing rings need to be removed to inspect and clean the inner cavity. This facilitates the disassembly and maintenance of the inner cavity while ensuring the sealing effect, thus solving the problem of inconvenient disassembly and maintenance of the inner cavity in the prior art.

[0014] Second, by using the bracket to separate the winding and the inner cavity of the water pump, the sealing difficulty of the winding is reduced, and the problem of high requirements for potting adhesive process when the winding is set in the inner cavity in the existing technology is solved.

[0015] Third, the winding and circuit board are set as a whole within the potting compound, which reduces the potting process steps and solves the problem of complex sealing process at the end of the bracket that is far from the inner cavity in the existing technology. Attached Figure Description

[0016] Figure 1 This is a cross-sectional schematic diagram of an embodiment of the present invention in which the winding is installed at the end of the bracket away from the inner cavity.

[0017] Figure 2 This is a cross-sectional schematic diagram of an embodiment of the present invention in which the winding is disposed within the inner cavity.

[0018] Figure 3 This is a utility model Figure 1 A magnified view of part A.

[0019] The attached figures are labeled as follows: 1. Housing; 2. Bracket; 3. Rotor; 4. Impeller; 5. Winding; 6. Circuit board; 7. Sealing ring; 8. Screw; 9. Encapsulating adhesive. Detailed Implementation

[0020] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0021] This utility model discloses a liquid supply pump that facilitates the inspection and cleaning of the inner cavity, reduces the sealing difficulty of the winding, and reduces the number of potting process steps.

[0022] like Figure 1 and 2 The liquid supply pump shown includes: housing 1, bracket 2, rotor 3, impeller 4, winding 5, circuit board 6, sealing ring 7, and screw 8.

[0023] The bracket 2 is installed on the outer shell 1 by screws 8, and the sealing ring 7 is set between the outer shell 1 and the bracket 2. The bracket 2 and the outer shell 1 together form an inner cavity.

[0024] The rotor 3 and winding 5 are mounted on the bracket 2.

[0025] Impeller 4 is mounted on rotor 3, and rotor 3 and impeller 4 are located inside the cavity.

[0026] The winding 5 and the circuit board 6 are mounted on the end of the bracket 2 away from the inner cavity. The end of the bracket 2 away from the inner cavity is filled with potting compound 9, so that the winding 5 and the circuit board 6 are placed in the potting compound 9. The winding 5 and the rotor 3 are in corresponding positions, so that the rotor 3 drives the impeller 4 to rotate.

[0027] The outer shell 1 is provided with an inlet and an outlet that communicate with the inner cavity, and the base plate of the bracket 2 is located between the winding 5 and the inner cavity to isolate the winding 5 and the inner cavity.

[0028] like Figure 1 and 2 The circuit board 6 shown is mounted at the end of the winding 5 away from the inner cavity. The installation of the conductive lines of the circuit board 6 is existing technology and is not limited here.

[0029] like Figure 1-3 The bracket 2 shown is provided with a sealing groove, and the sealing ring 7 is set in the sealing groove.

[0030] like Figure 1-3 The bracket 2 shown has a protruding structure on the side near the inner cavity, and the outer shell 1 is fitted onto the protruding structure.

[0031] The outer shell 1 is fitted with the raised structure with a clearance.

[0032] Instructions for use: When assembling bracket 2, winding 5 and circuit board 6, encapsulate winding 5 and circuit board 6 as a whole.

[0033] When the inner cavity needs to be inspected, simply remove screw 8 to separate the outer shell 1 and the bracket 2 to inspect and clean the inner cavity.

[0034] Before reassembling, it is necessary to check whether the sealing ring 7 needs to be replaced.

[0035] As described above, although the present invention has been shown and described with reference to specific preferred embodiments, it should not be construed as limiting the present invention itself. Various changes in form and detail may be made to the present invention without departing from the spirit and scope of the appended claims.

Claims

1. A liquid supply pump, characterized in that, include: Housing, bracket, rotor, impeller, windings, circuit board, sealing rings, and screws; The bracket is installed on the outer shell by screws, the sealing ring is disposed between the outer shell and the bracket, and the bracket and the outer shell together enclose an inner cavity; The rotor and windings are mounted on a bracket; The impeller is mounted on the rotor, and the rotor and impeller are disposed within the inner cavity; The winding and circuit board are mounted on the end of the bracket away from the inner cavity. The end of the bracket away from the inner cavity is filled with potting compound, so that the winding and circuit board are placed inside the potting compound.

2. The liquid supply pump according to claim 1, characterized in that, The circuit board is mounted at the end of the winding away from the inner cavity.

3. The liquid supply pump according to claim 1, characterized in that, The bracket is provided with a sealing groove, and the sealing ring is disposed in the sealing groove.

4. The liquid supply pump according to claim 1, characterized in that, The bracket has a protruding structure on the side near the inner cavity, and the outer shell is fitted onto the protruding structure.

5. A liquid supply pump according to claim 4, characterized in that, The outer shell and the protruding structure are fitted with a clearance.

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