Rust-proof water pump shell

Abstract

The utility model relates to a rust-proof water pump shell, in particular to the technical field of water pumps. The stretching lining disc comprises a pump body, a stretching lining disc and a cast iron front cover, a cylindrical boss protruding backwards is arranged in the middle of the back of the cast iron front cover, a lining disc plane used for supporting the cylindrical boss plane is arranged at the position, corresponding to the cylindrical boss, of the stretching lining disc, an open groove is formed in the bottom of the cylindrical boss, and the open groove is communicated with the cylindrical boss. A cylindrical boss is arranged on the back of the cast iron front cover, a water retaining ring is installed on the inner ring of the cylindrical boss, an annular boss is arranged at the position, close to the edge, of the back of the cast iron front cover, an annular groove matched with the annular boss is formed in the position, corresponding to the annular boss, of the stretching lining disc, and the stretching lining disc and the rubber water retaining ring form a double anti-seepage structure through cooperation of the annular boss and the groove. And the water passing part adopts a structure that the stainless steel stretching lining disc is matched with the cast iron front cover, so that the cost is greatly reduced, and the water quality is ensured to be clean and rustless.

Description

Technical Field

[0001] This utility model relates to the field of water pump technology, and in particular to a rust-proof water pump housing. Background Technology

[0002] Traditional water pump casings are often made of cast iron, which is prone to corrosion when exposed to humid environments or water flow for extended periods, affecting structural strength and sealing performance. The connection between the front cover and the pump body is particularly susceptible to corrosion, leading to water leakage and further exacerbating corrosion of internal components. While some existing technologies utilize stainless steel components, their connection structures are poorly designed, lacking features such as tight sealing surfaces and double anti-leakage design, resulting in limited rust prevention. Utility Model Content

[0003] (1) Technical solution

[0004] To solve the above-mentioned technical problems, this utility model provides a rust-proof water pump housing, including a pump body, a stretching liner, and a cast iron front cover. The stretching liner and the cast iron front cover are installed sequentially from the inside to the outside at the front end of the pump body. A cylindrical boss protruding backward is provided in the middle of the back of the cast iron front cover. A liner plane for supporting the cylindrical boss is provided on the stretching liner at a position corresponding to the cylindrical boss. A groove is provided at the bottom of the cylindrical boss. A water-blocking ring is installed in the inner ring of the cylindrical boss. An annular boss is provided near the edge of the back of the cast iron front cover. An annular groove that mates with the annular boss is provided on the stretching liner at a position corresponding to the annular boss.

[0005] Preferably, the pump body and the tension liner are both made of stainless steel.

[0006] Preferably, the inner ring of the annular groove mates with the outer ring of the annular boss.

[0007] Preferably, the water-blocking ring is made of rubber.

[0008] Preferably, the cast iron front cover is mounted on the pump body by means of bolts and nuts.

[0009] (2) Beneficial effects

[0010] This utility model provides a rust-proof water pump housing, which has the following advantages compared with the prior art:

[0011] 1. The bottom of the cylindrical boss has a groove, and a water-blocking ring is installed on the inner ring of the cylindrical boss. The water-blocking ring is made of rubber. When the water pump seal fails and leaks, the water-blocking ring blocks the water and drains it away through the groove, preventing water from entering the motor and burning it out. The inner ring of the circular groove cooperates with the outer ring of the circular boss to prevent external water from seeping in. The circular boss-groove cooperation and the rubber water-blocking ring form a double anti-seepage structure, which significantly reduces the risk of water leakage and greatly improves the anti-rust effect.

[0012] 2. Since cast iron is prone to rusting, and the cost of a complete stainless steel front cover is very high, the water passage section uses a structure that combines a stainless steel stretch liner with a cast iron front cover, which greatly reduces costs and ensures that the water is clean and does not rust.

[0013] 3. The plane of the annular boss supports the plane of the annular groove, preventing the pressure in the pump chamber from causing the liner to deform or crack during pump operation.

[0014] 4. The bolted connection makes it easy to disassemble, clean, or replace the water-blocking ring. Attached Figure Description

[0015] Figure 1 This is a perspective view of the present invention.

[0016] Figure 2 This is a front three-dimensional structural diagram of the stretching liner of this utility model.

[0017] Figure 3 This is a three-dimensional structural diagram of the back of the cast iron front cover of this utility model.

[0018] The attached figures are labeled as follows: 1-pump body, 2-stretching liner, 21-circular groove, 22-liner plane, 3-cast iron front cover, 31-cylindrical boss, 311-groove, 32-circular boss. Detailed Implementation

[0019] The present invention will be further described in conjunction with the accompanying drawings and embodiments.

[0020] like Figures 1-3As shown, the present invention provides a rust-proof water pump housing, comprising a pump body 1, a tension liner 2, and a cast iron front cover 3. The tension liner 2 and the cast iron front cover 3 are sequentially installed from the inside to the outside at the front end of the pump body 1. A cylindrical boss 31 protruding rearward is provided in the middle of the back of the cast iron front cover 3. A liner plane 22 for supporting the cylindrical boss 31 is provided on the tension liner 2 at a position corresponding to the cylindrical boss 31. By designing the cylindrical boss 31, the boss plane is supported on the liner plane 22, preventing deformation and collapse of the liner due to pump chamber pressure during pump operation. The cylindrical boss 31 has a slot 311 at its bottom. A water-blocking ring is installed on the inner ring of the cylindrical boss 31. The water-blocking ring is made of rubber. When the water pump seal fails and leaks, the water-blocking ring blocks the water and drains it out through the slot, preventing water from entering the motor and burning it out. The cast iron front cover 3 has a circular boss 32 near the edge on its back. The tension liner 2 has a circular groove 21 that matches the circular boss 32 at the corresponding position. The design of the circular groove 21 improves the strength of the tension liner 2 and is installed in conjunction with the circular boss 32 of the cast iron front cover 3.

[0021] Both the pump body 1 and the tension liner 2 are made of stainless steel to prevent corrosion of parts that come into contact with water.

[0022] The inner ring of the annular groove 21 cooperates with the outer ring of the annular boss 32 to prevent external water from seeping in; the plane of the annular boss 32 supports the plane of the annular groove 21 to prevent the pressure in the pump chamber from causing the liner to deform or crack when the water pump is working.

[0023] The cast iron front cover 3 is installed on the pump body 1 by the cooperation of bolts and nuts. The bolt fixing method facilitates maintenance and ensures a tight seal between the front cover and the pump body.

[0024] Working principle: When water flows into the pump body 1, the pressure acts on the inner wall of the cast iron front cover 3. The engagement of the annular boss 32 and the groove 21 prevents external water vapor from entering the joint. A small amount of seepage is blocked by the rubber water-blocking ring and guided to the outside along the slot 311. The bolts can be disassembled periodically to clean the inside or replace the water-blocking ring.

[0025] The embodiments described above are merely preferred embodiments of the present invention, and are described in a relatively specific and detailed manner. However, the present invention is not limited to these embodiments. It should be noted that for those skilled in the art, any improvements made without departing from the spirit of the present invention fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A rust-proof water pump housing, characterized in that, The pump body (1), the tension liner (2), and the cast iron front cover (3) are included. The tension liner (2) and the cast iron front cover (3) are installed sequentially from the inside to the outside at the front end of the pump body (1). The cast iron front cover (3) has a cylindrical boss (31) that protrudes backward at the middle of its back. The tension liner (2) has a liner plane (22) for supporting the cylindrical boss (31) at the position corresponding to the cylindrical boss (31). The bottom of the cylindrical boss (31) has a slot (311). A water-blocking ring is installed in the inner ring of the cylindrical boss (31). The back of the cast iron front cover (3) has a circular boss (32) near the edge. The tension liner (2) has a circular groove (21) that cooperates with the circular boss (32) at the position corresponding to the circular boss (32).

2. The rust-proof water pump housing according to claim 1, characterized in that, Both the pump body (1) and the stretching liner (2) are made of stainless steel.

3. The rust-proof water pump housing according to claim 1, characterized in that, The inner ring of the circular groove (21) mates with the outer ring of the circular boss (32).

4. The rust-proof water pump housing according to claim 1, characterized in that, The water-blocking ring is made of rubber.

5. A rust-proof water pump housing according to claim 1, characterized in that, The cast iron front cover (3) is installed on the pump body (1) by means of bolts and nuts.

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