A pump cover assembly structure of a washing pump

Abstract

The utility model discloses a kind of pump cover assembly structures of washing pump, the pump cover is assembled on pump shell, it is characterized in that, the pump shell includes the barrel of one end opening and the ring frame fixed to the opening end of barrel, the ring frame includes the support ring fixedly connected with the upper end of barrel and the outer ring fixedly connected with the outside of support ring, the pump cover includes plate body and the inner ring at the lower end of plate body, the outer ring is arranged at the outside of inner ring, the upper end of outer ring is bonded with plate body, the lower end of inner ring is bonded with the upper end of barrel. The pump cover assembly structure of this washing pump has double-seal structure, assembly is stable, and sealing performance is high.

Description

Technical Field

[0001] This utility model relates to the field of washing pump technology, and in particular to a pump cover assembly structure for a washing pump. Background Technology

[0002] The washing pump is a core component of the washing system. Its core function is to drive the impeller to rotate through the motor, generate negative pressure or pressure difference, and realize the intake, pressurization and transportation of fluids such as washing liquid and clean water, so as to provide sufficient fluid power for the washing process.

[0003] In the structure of a washing pump, the pump casing and pump cover are the core components forming the pump body's sealed cavity. The assembly quality of these two components plays a decisive role in the pump body's sealing performance and overall structural strength. Currently, in the commonly used washing pump casing and pump cover assembly structure in the industry, the pump casing is typically designed as a barrel structure with one open end. The interior of this barrel forms an installation space to accommodate core components such as the impeller and motor. The pump cover includes a plate on the barrel, which is used to close the opening of the barrel. On the side of the pump cover plate facing the inside of the barrel, a cylindrical connecting part is integrally formed. The outer diameter of this connecting part matches the inner diameter of the barrel's open end. During assembly, the connecting part is inserted into the open end of the barrel, allowing the pump cover and pump casing to form a preliminary positioning fit. Subsequently, the outer peripheral wall of the connecting part is fixedly connected to the inner wall of the barrel by adhesive, thereby completing the assembly and fixation of the pump cover and pump casing.

[0004] However, the above structure only uses adhesive to bond the outer peripheral wall of the connection part to the inner wall of the barrel, which is a single seal. If this seal fails, it will affect the connection stability between the pump cover and the pump casing. The pump cover is prone to loosening, displacement, or even separation from the pump casing when the pump body is running at high speed, which will seriously damage the overall structure of the pump body and affect the sealing performance of the washing pump, causing the washing pump to be unable to perform the fluid delivery function. Summary of the Invention

[0005] In view of the shortcomings of the prior art, the technical problem to be solved by this patent application is how to provide a pump cover assembly structure for a washing pump with a double sealing structure, stable assembly, and high sealing performance.

[0006] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0007] A pump cover assembly structure for a washing pump, wherein the pump cover is assembled on a pump housing, characterized in that the pump housing includes a tub body with one open end and a ring frame fixed to the open end of the tub body, the ring frame including a support ring fixedly connected to the upper end of the tub body and an outer ring fixedly connected to the outer side of the support ring, the pump cover including a plate body and an inner ring located at the lower end of the plate body, the outer ring being disposed outside the inner ring, the upper end of the outer ring being bonded to the plate body, and the lower end of the inner ring being bonded to the upper end of the tub body.

[0008] In the above technical solution, a ring frame is added to the outside of the open end of the barrel. The ring frame consists of a support ring and an outer ring. An inner ring is set at the lower end of the pump cover plate, and the outer ring is located outside the inner ring. During bonding, the upper end of the outer ring is bonded to the plate, and the lower end of the inner ring is bonded to the upper end of the barrel, forming a double bonding structure. This effectively solves the problems of poor connection stability and weak sealing in traditional single-layer bonding methods. The double bonding structure increases the bonding contact area between the pump cover and the pump casing, making the bonding force more dispersed and uniform, reducing the impact of single-point delamination on the overall connection. The nesting of the inner and outer rings forms two radial bonding and sealing defense lines. Even if one bonding line experiences local aging, the other can still maintain the sealing performance to a certain extent, significantly improving the connection reliability and sealing redundancy of the assembly structure. In addition, the support ring of the ring frame can also provide a stable support foundation for the pump cover, preventing the plate from deforming due to uneven stress, further ensuring the structural strength after assembly.

[0009] Preferably, a sealing ring is placed on the ring frame, and the sealing ring is located in the area enclosed by the plate, the inner ring, and the ring frame.

[0010] Preferably, the plate body has a pressure ring protruding from the support ring, the pressure surface of the pressure ring is an inclined surface, the inclined surface is inclined downward along the direction close to the inner ring, and the pressure ring presses against the sealing ring.

[0011] Preferably, the support ring has an arc-shaped stop on the side away from the outer ring, and the stop fits against the sealing ring.

[0012] Preferably, the lower outer side of the inner ring is fixed with several buckles, and the upper end of the barrel is provided with a slot for engaging with the buckles.

[0013] Preferably, the inner ring of the support ring is provided with an arc surface for guiding the buckle.

[0014] In summary, the pump cover assembly structure of this washing pump features a double-seal structure. Through the design of inner and outer rings, double bonding, snap-fit ​​connection, and a composite structure of sealing ring, pressure ring, and arc-shaped baffle, it solves the problems of single bonding, unstable connection, and easy seal failure in traditional assembly structures, thereby improving connection reliability and extending service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the pump cover assembly structure of a washing pump according to the present invention.

[0016] Figure 2 for Figure 1 The main view.

[0017] Figure 3 for Figure 2 A sectional view of AA.

[0018] Figure 4 for Figure 3 Enlarged diagram of point C in the middle.

[0019] Figure 5 This is a schematic diagram of the pump cover.

[0020] Figure 6 This is a schematic diagram of the pump casing.

[0021] Figure 7 for Figure 6 Side view.

[0022] Figure 8 for Figure 7 BB cross-sectional view.

[0023] Figure 9 for Figure 8 Enlarged diagram of point E in the middle. Detailed Implementation

[0024] The present invention will now be described in further detail with reference to the accompanying drawings. In the description of the present invention, it should be understood that directional terms such as "upper," "lower," "top," and "bottom" indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings. These terms are used only for the convenience of describing the present invention and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as limiting the scope of protection of the present invention. The directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0025] like Figure 1-9 As shown, a pump cover assembly structure for a washing pump is provided. The pump cover is assembled onto a pump housing. The pump housing includes a tub body 1 with one open end and a ring frame fixed to the open end of the tub body. The ring frame includes a support ring 2 fixedly connected to the upper end of the tub body and an outer ring 3 fixedly connected to the outer side of the support ring. The pump cover includes a plate body 4 and an inner ring 5 located at the lower end of the plate body. The outer ring is disposed outside the inner ring. The upper end of the outer ring is bonded to the plate body, and the lower end of the inner ring is bonded to the upper end of the tub body.

[0026] In the above technical solution, a ring frame is added to the outside of the open end of the barrel. The ring frame consists of a support ring and an outer ring. An inner ring is set at the lower end of the pump cover plate, and the outer ring is located outside the inner ring. During bonding, the upper end of the outer ring is bonded to the plate, and the lower end of the inner ring is bonded to the upper end of the barrel, forming a double bonding structure. This effectively solves the problems of poor connection stability and weak sealing in traditional single-layer bonding methods. The double bonding structure increases the bonding contact area between the pump cover and the pump casing, making the bonding force more dispersed and uniform, and reducing the impact of single-point delamination on the overall connection. The inner and outer rings are used to form two radial bonding sealing lines. Even if one bonding line experiences local aging, the other can still maintain sealing performance to a certain extent, significantly improving the connection reliability and sealing redundancy of the assembly structure. In addition, the support ring of the ring frame can also provide a stable support foundation for the pump cover, preventing the plate from deforming due to uneven stress, and further ensuring the structural strength after assembly.

[0027] The pump cover is equipped with copper inserts for easy wiring; the pump body houses the motor and an impeller connected to the motor's output shaft, and also includes a water pipe connector. Specifically, both the pump cover and the pump casing are integrally cast for ease of manufacturing.

[0028] In practice, a sealing ring 6 is placed on the ring frame, and the sealing ring is located in the area enclosed by the plate, the inner ring, and the ring frame. The sealing ring uses its own elastic deformation to fill the gap between the ring frame and the pump cover, compensating for sealing defects caused by uneven bonding, differences in surface roughness, etc. In addition, the sealing ring can effectively prevent the washing liquid from directly contacting the bonding surface, slow down the corrosion and aging rate of the adhesive, and extend the service life of the bonding seal.

[0029] In implementation, a pressure ring 7 protrudes from the plate body opposite the support ring. The pressure surface of the pressure ring is an inclined surface, which is inclined downwards along the direction close to the inner ring. The pressure ring presses against the sealing ring. The downward inclination of the inclined surface along the direction close to the inner ring allows the pressure ring to provide downward pressure when the pump cover is connected to the pump housing. This causes the sealing ring to deform and fit against the ring frame, pressure ring, and inner ring, further eliminating sealing gaps. It also prevents problems such as misalignment or wrinkling of the sealing ring during assembly or use, ensuring the uniformity and stability of the sealing effect and further improving the sealing performance.

[0030] In implementation, an arc-shaped baffle 8 is provided on the side of the support ring away from the outer ring, and the baffle fits against the sealing ring. The arc-shaped baffle can form a good curved surface fit with the arc-shaped surface of the sealing ring, increasing the contact area between the two and improving the reliability of the seal. In addition, the baffle can radially limit the sealing ring when it is compressed, preventing the sealing ring from excessively deforming or shifting into the barrel body, ensuring that the sealing ring is always in the preset sealing position, maintaining a stable sealing state, and avoiding sealing failure caused by misalignment of the sealing ring.

[0031] During implementation, several buckles 9 are fixed downwards on the outer side of the lower end of the inner ring, and a slot 10 for engaging with the buckles is provided at the upper end of the barrel. When connecting the pump cover and the pump housing, in addition to adhesive bonding, a buckle-slot connection method is added, i.e., a mechanical connection. During long-term use, even if the adhesive ages and delaminates, the snap-fit ​​structure can still maintain the connection between the pump cover and the pump housing, preventing the pump cover from loosening or falling off, providing double protection for connection stability.

[0032] Specifically, there are six buckles evenly distributed along the circumference.

[0033] In practice, the inner ring of the support ring is provided with an arc surface 11 for guiding the buckle. The arc surface can play a guiding role during buckle assembly, avoiding rigid collision or jamming between the buckle and the inner ring of the support ring, so that the buckle can be quickly and smoothly aligned and snapped into the slot, reducing the difficulty of assembly operation and improving the efficiency of mass production.

[0034] Finally, it should be noted that those skilled in the art can make various modifications and variations to this utility model without departing from its spirit and scope. Therefore, if these modifications and variations fall within the scope of the claims and their equivalents, this utility model also intends to include these modifications and variations.

Claims

1. A pump cover assembly structure for a washing pump, wherein the pump cover is assembled onto a pump casing, characterized in that, The pump casing includes a barrel (1) with one open end and a ring frame fixed to the open end of the barrel (1). The ring frame includes a support ring (2) fixedly connected to the upper end of the barrel (1) and an outer ring (3) fixedly connected to the outer side of the support ring (2). The pump cover includes a plate (4) and an inner ring (5) located at the lower end of the plate (4). The outer ring (3) is located outside the inner ring (5). The upper end of the outer ring (3) is bonded to the plate (4), and the lower end of the inner ring (5) is bonded to the upper end of the barrel (1).

2. The pump cover assembly structure of a washing pump according to claim 1, characterized in that, A sealing ring (6) is placed on the ring frame, and the sealing ring (6) is located in the area enclosed by the plate (4), the inner ring (5) and the ring frame.

3. The pump cover assembly structure of a washing pump according to claim 1, characterized in that, The plate (4) has a pressure ring (7) protruding from the support ring (2). The pressure surface of the pressure ring (7) is an inclined surface. The inclined surface is inclined downward along the direction close to the inner ring (5). The pressure ring (7) presses the sealing ring (6).

4. The pump cover assembly structure of a washing pump according to claim 1, characterized in that, The support ring (2) has an arc-shaped baffle (8) on the side away from the outer ring (3), and the baffle (8) fits against the sealing ring (6).

5. The pump cover assembly structure of a washing pump according to claim 1, characterized in that, The lower outer side of the inner ring (5) is fixed with several buckles (9), and the upper end of the barrel (1) is provided with a slot (10) that engages with the buckles (9).

6. The pump cover assembly structure of a washing pump according to claim 1, characterized in that, The inner ring of the support ring (2) is provided with an arc surface (11) for guiding the buckle (9).

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