A rear-mounted liquid supply pump

Abstract

The utility model discloses a kind of liquid supply pumps of rear installation winding, belong to liquid supply pump technical field.The liquid supply pump includes: shell, support, rotor, impeller, winding, circuit board and bottom cover, shell is sleeved in support and bottom cover, the shell and support have enclosed inner chamber, rotor is installed in support, impeller is installed in rotor, rotor and impeller are arranged in inner chamber, winding and circuit board are installed in the one end of support away from inner chamber, circuit board and winding are connected, bottom cover is set in the one end of support away from inner chamber, winding and circuit board are arranged between support and bottom cover, inner wall of shell and outer wall of bottom cover are filled with potting adhesive.The utility model does not need to set through hole and boss to make liquid potting adhesive flow into the bottom of winding, reduce the sealing difficulty of winding, solve the problem that the production process is complicated due to the winding of prior art is arranged in inner chamber.

Description

Technical Field

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

[0002] The Chinese invention patent, published on June 14, 2024, titled "High-Sealing Liquid Supply Pump," describes a "rotating component connected to the side of the bracket facing the top of the first inner cavity." While this avoids the risk of water leakage from the liquid entering through the inlet pipe at the top of the first inner cavity by wrapping and sealing the winding motor with a second potting compound, it requires the installation of through holes and bosses to allow the liquid potting compound to flow into the bottom of the winding, resulting in a complex manufacturing process. Utility Model Content

[0003] Purpose of the utility model: To provide a liquid supply pump with rear-mounted windings, by setting the rotor and windings at both ends of the bracket, and using the bracket to separate the windings and the inner cavity, the sealing difficulty of the windings is reduced, and the problem of complex production process caused by setting the windings in the inner cavity in the prior art is solved.

[0004] The technical solution of this utility model is as follows: a liquid supply pump with rear-mounted winding includes: a housing, a bracket, a rotor, an impeller, windings, a circuit board, and a bottom cover.

[0005] The outer shell is fitted onto the bracket and the bottom cover, and the outer shell and the bracket together enclose an inner cavity.

[0006] The rotor is mounted on the bracket, the impeller is mounted on the rotor, and the rotor and impeller are disposed inside the inner cavity.

[0007] The winding and circuit board are mounted at the end of the bracket away from the inner cavity, and the circuit board and winding are connected.

[0008] The bottom cover is located at the end of the bracket away from the inner cavity, the winding and circuit board are located between the bracket and the bottom cover, and potting compound is used to fill the space between the inner wall of the outer shell and the outer wall of the bottom cover.

[0009] In a further embodiment, the bottom cover includes: a first end and a second end.

[0010] The first end is located on the side of the second end facing the bracket, and the size of the bottom cover decreases from the first end to the second end, so that there is a gap between the bottom cover and the outer shell, the gap being filled with potting compound, thereby increasing the volume of potting compound that can be accommodated between the bottom cover and the outer shell.

[0011] In a further embodiment, the bottom cover is connected to the bracket.

[0012] In a further embodiment, the outer shell is provided with a stepped portion, and the end face of the bracket near the inner cavity is connected to the end face of the stepped portion.

[0013] In a further embodiment, the inner wall of the housing and the outer wall of the bracket are fitted with a clearance, and the sealing between the housing and the bracket is further ensured by the stepped portion and the fit between the inner wall of the housing and the outer wall of the bracket.

[0014] In a further embodiment, the winding is disposed within the potting compound, which further improves the sealing effect of the winding. Although this embodiment also disposes of the winding within the potting compound, the winding is isolated from the inner cavity by a bracket, thus reducing the process requirements for the potting compound.

[0015] In a further embodiment, the circuit board is located at the end of the winding away from the inner cavity, which facilitates the connection and routing of the circuit board and the winding.

[0016] In a further embodiment, the bottom cover is made of plastic, iron, aluminum, or copper, which is beneficial for heat dissipation of electronic components on the circuit board.

[0017] The beneficial effects of this utility model are as follows: By setting the rotor and winding at both ends of the bracket respectively, and using the bracket to separate the winding and the inner cavity, the winding and the circuit board can be installed at the end of the mounting shell away from the liquid supply cavity at the same time. There is no need to set through holes and bosses to allow liquid potting compound to flow into the bottom of the winding, which reduces the sealing difficulty of the winding and solves the problem of complex production process caused by setting the winding in the inner cavity in the prior art. Attached Figure Description

[0018] Figure 1 This is a cross-sectional schematic diagram of the present invention.

[0019] The attached figures are labeled as follows: 1. Outer shell; 2. Support; 3. Rotor; 4. Impeller; 5. Winding; 6. Circuit board; 7. Bottom cover; 8. 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 with rear-mounted windings. By setting the rotor and windings at both ends of the bracket and using the bracket to separate the windings and the inner cavity, the sealing difficulty of the windings is reduced, and the problem of complex production process caused by setting the windings in the inner cavity in the prior art is solved.

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

[0023] The outer shell 1 is fitted onto the bracket 2 and the bottom cover 7, and the outer shell 1 and the bracket 2 together form an inner cavity.

[0024] The rotor 3 is mounted on the bracket 2, and the impeller 4 is mounted on the rotor 3. The rotor 3 and the impeller 4 are located inside the cavity.

[0025] The winding 5 and the circuit board 6 are mounted on the end of the bracket 2 away from the inner cavity, and the circuit board 6 is connected to the winding 5.

[0026] The bottom cover 7 is located at the end of the bracket 2 away from the inner cavity. The winding 5 and the circuit board 6 are located between the bracket 2 and the bottom cover 7. The inner wall of the outer shell 1 and the outer wall of the bottom cover 7 are filled with potting compound 8.

[0027] The outer casing 1 is provided with an inlet and an outlet that communicate with the inner cavity. The non-perforated base plate of the bracket 2 is set between the winding 5 and the inner cavity to isolate the winding 5 and the inner cavity. The bottom cover 7 is made of plastic, iron, aluminum or copper, which is conducive to heat dissipation of electronic components on the circuit board 6.

[0028] like Figure 1 The bottom cover 7 shown includes: a first end and a second end.

[0029] The first end is located on the side of the second end facing the bracket 2. The size of the bottom cover 7 decreases from the first end to the second end, so that there is a gap between the bottom cover 7 and the outer shell 1, and the gap is filled with potting compound 8.

[0030] like Figure 1 The bottom cover 7 shown is connected to the bracket 2.

[0031] like Figure 1 The outer casing 1 shown has a stepped portion, and the end face of the bracket 2 near the inner cavity is connected to the end face of the stepped portion.

[0032] The inner wall of the outer shell 1 and the outer wall of the support 2 are fitted with a clearance, wherein the outer wall of the support 2 is a ring structure that fits with the outer shell 1.

[0033] like Figure 1 The winding 5 shown is disposed within the potting compound 8.

[0034] like Figure 1 The circuit board 6 shown is located at the end of the winding 5 away from the inner cavity. In the above embodiment, the installation of the conductive wires of the circuit board 6 is prior art and is not limited here.

[0035] During assembly: the rotor 3 is installed on one end of the bracket 2, the impeller 4 is installed on the rotor 3, the winding 5 is installed on the other end of the bracket 2 and filled with potting compound 8, the circuit board 6 is installed on the winding 5, the winding 5 and the rotor 3 are positioned correspondingly so that the rotor 3 can drive the impeller 4 to rotate, then the bracket 2 is installed on the outer shell 1 to form an inner cavity, so that the rotor 3 and the impeller 4 are placed in the inner cavity, then the bottom cover 7 is placed on the end of the bracket 2 away from the inner cavity, and finally the potting compound 8 is used to connect the bottom cover 7 and the outer shell 1.

[0036] 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 with a rear-mounted winding, characterized in that, include: Housing, bracket, rotor, impeller, windings, circuit board, and bottom cover; The outer shell is fitted onto the bracket and the bottom cover, and the outer shell and the bracket together enclose an inner cavity; The rotor is mounted on the 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 at the end of the bracket away from the inner cavity, and the circuit board and winding are connected. The bottom cover is located at the end of the bracket away from the inner cavity, the winding and circuit board are located between the bracket and the bottom cover, and potting compound is used to fill the space between the inner wall of the outer shell and the outer wall of the bottom cover.

2. The liquid supply pump with a rear-mounted winding according to claim 1, characterized in that, The bottom cover includes: a first end and a second end; The first end is located on the side of the second end facing the bracket, and the size of the bottom cover decreases from the first end to the second end, so that there is a gap between the bottom cover and the outer shell, and the gap is filled with potting compound.

3. The liquid supply pump with a rear-mounted winding according to claim 1, characterized in that, The bottom cover is connected to the bracket.

4. The liquid supply pump with a rear-mounted winding according to claim 1, characterized in that, The outer shell has a stepped portion, and the end face of the bracket near the inner cavity is connected to the end face of the stepped portion.

5. The liquid supply pump with a rear-mounted winding according to claim 4, characterized in that, The inner wall of the outer casing and the outer wall of the support are fitted with a clearance.

6. The liquid supply pump with a rear-mounted winding according to claim 1, characterized in that, The winding is housed within potting compound.

7. The liquid supply pump with a rear-mounted winding according to claim 6, characterized in that, The circuit board is located at the end of the winding away from the inner cavity.

8. The liquid supply pump according to claim 1, characterized in that, The bottom cover is made of plastic, iron, aluminum, or copper.

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