Aluminum shell plastic-coated integrated sealing structure

Abstract

The utility model relates to the technical field of centrifugal pumps, in particular to an aluminum shell plastic-coated integrated sealing structure, which is characterized in that an O-shaped ring and a stainless steel gasket are arranged, so that liquid is prevented from flowing to a dry area, a PCBA (printed circuit board assembly) is prevented from being burnt out due to internal leakage, and the integral failure of a water pump is avoided. As long as the compression amount and the filling rate of the sealing ring meet the design requirements, internal leakage cannot be caused, and the reliability can be greatly improved; comprising an aluminum casting machine shell which is installed on a centrifugal pump. The motor further comprises a plastic part and a sealing mechanism, the plastic part is integrally arranged in the aluminum casting machine shell in an injection molding mode, and the sealing mechanism is installed on the plastic part and enhances the sealing effect.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of centrifugal pump, in particular to a sealing structure of aluminum shell plastic package integration. BACKGROUND

[0002] Centrifugal pump is the centrifugal force produced by impeller rotation, which transfers dynamic water to other places to meet the needs of customers.

[0003] The existing sealing structure of aluminum shell plastic package integration, such as the centrifugal pump sealing structure disclosed in the utility model patent with the application number 202422209648.1, its main structure includes a bottom plate, a pump body is installed on the bottom plate, a sleeving concave cylindrical block is sleeved on the pump body through a quick sleeving structure, and a servo motor is installed on the pump body through a magnetic driving structure; in use, the limiting ring block on the sleeving concave ring block is inserted into the expansion shaft pipe on the pump body, and the magnetic transmission mechanism of the NS insertion shaft rod is used to realize the quick extrusion and fixation of the limiting ring block, and the expansion T-shaped rods are rotated along the expansion groove under the magnetic action and extrude the limiting ring block to make it tightly fit on the pump body.

[0004] However, the sealing performance of the wet area of the centrifugal pump contacting water is related to the lifeblood of the water pump. For the water pump with control, water leakage of the water pump can burn the circuit board PCBA, leading to the overall failure of the water pump. For the water pump without control, water leakage can cause motor short circuit, reduce performance, and cause the overall failure of the water pump after a long time. Both of the above cases can cause the cooling system of the whole vehicle to be paralyzed, reducing the comfort of the customer. UTILITY MODEL CONTENTS

[0005] To solve the above technical problems, the utility model provides a sealing structure of aluminum shell plastic package integration by setting O-ring and stainless steel gasket, which avoids liquid flow to dry area, causes internal leakage and burns PCBA, leading to overall failure of the water pump, and the riveting pressure tool is simple to assemble, as long as the compression amount and filling rate of the sealing ring meet the design requirements, internal leakage will not occur, and the reliability will be greatly improved.

[0006] The utility model discloses a sealing structure of aluminum shell plastic package integration, which comprises an aluminum pouring machine shell, the aluminum pouring machine shell is installed on a centrifugal pump, further comprises a plastic part and a sealing mechanism, the plastic part is integrally injection molded in the aluminum pouring machine shell, and the sealing mechanism is installed on the plastic part and enhances the sealing effect, the aluminum pouring machine shell is processed and formed, the plastic part is integrally injection molded in the aluminum pouring machine shell, then the sealing mechanism is installed at the connection between the aluminum pouring machine shell and the plastic part, and the sealing mechanism is set to avoid liquid flow to dry area, cause internal leakage and burn PCBA, leading to overall failure of the water pump.

[0007] Preferably, the plastic part is made of PPS-GF40 plastic material; the plastic part is integrally injection molded in the aluminum casting shell, which is convenient for production and simple in structure.

[0008] Preferably, the sealing mechanism comprises an O-ring and a stainless steel gasket, the O-ring is installed in the gap between the aluminum casting shell and the plastic part, the stainless steel gasket is installed in the gap between the aluminum casting shell and the plastic part, and the stainless steel gasket is located above the O-ring; by arranging the O-ring and the stainless steel gasket, when the middle position is filled with liquid, the liquid cannot pass through the O-ring and the stainless steel gasket, so that the liquid cannot flow to the dry area, thereby avoiding internal leakage and burning the PCBA, and causing the water pump to fail as a whole.

[0009] Preferably, the thickness of the stainless steel gasket is 0.5 mm.

[0010] Preferably, the rivet is provided with a protrusion, and the rivet with the protrusion is riveted on the aluminum casting shell; after the stainless steel gasket is installed, the aluminum casting shell is riveted by using the tool with the protrusion, the aluminum casting shell expands and deforms after being pressed, extrusion undercut is formed, and the O-ring is locked on the undercut formed by the aluminum casting shell; as long as the compression amount and the filling rate of the O-ring meet the design requirements, internal leakage will not occur, and the reliability is greatly improved.

[0011] Compared with the prior art, the aluminum casting shell is processed and formed, the plastic part is integrally injection molded in the aluminum casting shell, and then the sealing mechanism is installed at the connection between the aluminum casting shell and the plastic part, so that the liquid is prevented from flowing to the dry area, internal leakage is avoided, the PCBA is not burned, and the water pump as a whole is not failed. BRIEF DESCRIPTION OF DRAWINGS

[0012] Fig. 1 is a front view of the sectional structure of the utility model;

[0013] Fig. 2 is an isometric view of the utility model;

[0014] Fig. 3 is a sectional isometric view of the utility model;

[0015] Fig. 4 is a sectional isometric view of the utility model.

[0016] In the drawings, 01 is an aluminum casting shell; 02 is a plastic part; 03 is a sealing mechanism; 31 is an O-ring; and 32 is a stainless steel gasket. DETAILED DESCRIPTION

[0017] For the purpose of facilitating the understanding of the present application, the present application will be described more fully below with reference to the accompanying drawings. The present application can be realized in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0018] Embodiment 1

[0019] The utility model discloses a kind of sealing structures of aluminium shell plastic package, including aluminium casting machine shell 01, aluminium casting machine shell 01 is installed on centrifugal pump;Further include plastic piece 02 and sealing mechanism 03, plastic piece 02 is integrally injection molded in aluminium casting machine shell 01, sealing mechanism 03 is installed on plastic piece 02 and enhances sealing effect;Further include that plastic piece 02 is PPS-GF40 plastic material quality;Sealing mechanism 03 includes O ring 31 and stainless steel gasket 32, O ring 31 is installed in the gap of aluminium casting machine shell 01 and plastic piece 02, stainless steel gasket 32 is installed in the gap of aluminium casting machine shell 01 and plastic piece 02, and stainless steel gasket 32 is located above O ring 31;Further include that stainless steel gasket 32 thickness is 0.5mm;When it works, first, aluminium casting machine shell 01 is formed after processing, plastic piece 02 is integrally injection molded in aluminium casting machine shell 01, then O ring 31 and stainless steel gasket 32 are installed at the junction of aluminium casting machine shell 01 and plastic piece 02, by setting O ring 31 and stainless steel gasket 32, when middle position is full of liquid, liquid cannot pass through O ring 31 and stainless steel gasket 32, avoid liquid to dry area, cause internal leakage to burn PCBA, cause water pump overall failure.

[0020] Embodiment 2

[0021] As Figs. 1 to 4 Shown, a kind of sealing structures of aluminium shell plastic package of the utility model, on the basis of embodiment 1;Further include rivet, rivet has protruding point, protruding point rivet is riveted in aluminium casting machine shell 01;When it works, first, aluminium casting machine shell 01 is formed after processing, plastic piece 02 is integrally injection molded in aluminium casting machine shell 01, then O ring 31 and stainless steel gasket 32 are installed at the junction of aluminium casting machine shell 01 and plastic piece 02, by setting O ring 31 and stainless steel gasket 32, when stainless steel gasket 32 is installed, using the protruding point tool riveting aluminium casting machine shell 01, aluminium casting machine shell 01 is deformed after swelling, forms extrusion reverse buckling, makes O ring 31 firmly lock in the reverse buckling formed by aluminium casting machine shell 01, as long as the compression amount and filling rate of O ring 31 meet design requirement, will not cause internal leakage, reliability can be greatly improved, when middle position is full of liquid, liquid cannot pass through O ring 31 and stainless steel gasket 32, avoid liquid to dry area, cause internal leakage to burn PCBA, cause water pump overall failure.

[0022] The above merely is the preferred implementation manner of the present application, and it should be noted that, for the ordinary skilled in the art, without departing from the technical principles of the present application, a number of improvements and modifications can be made, and these improvements and modifications should also be considered as the protection scope of the present application.

Claims

1. A sealed structure of an aluminum shell plastic overmolding integration, comprising an aluminum casting machine shell (01), the aluminum casting machine shell (01) is installed on a centrifugal pump; characterized in that, It also includes a plastic part (02) and a sealing mechanism (03), the plastic part (02) is integrally injection molded in the aluminum casting shell (01), and the sealing mechanism (03) is installed on the plastic part (02) and enhances the sealing effect.

2. The sealing structure with an integrated aluminum shell and plastic coating as described in claim 1, characterized in that, The plastic part (02) is made of PPS-GF40 plastic material.

3. The sealed structure of claim 1, wherein the aluminum shell is integrally molded with the plastic. 5 The sealing mechanism (03) includes an O-ring (31) and a stainless steel gasket (32), the O-ring (31) is installed in the gap between the aluminum casting shell (01) and the plastic part (02), and the stainless steel gasket (32) is installed in the gap between the aluminum casting shell (01) and the plastic part (02), and the stainless steel gasket (32) is located above the O-ring (31).

4. The sealed structure of claim 3, wherein the aluminum shell is integrally molded with the plastic. 5 The thickness of the stainless steel gasket (32) is 0.5mm.

5. The sealed structure of claim 1, wherein the aluminum shell is integrally molded with the plastic. 5 It also includes a rivet with a protrusion, and the rivet with the protrusion is riveted on the aluminum casting shell (01).

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