Wear-resistant water pump shell with wear-resistant part at inlet

Abstract

The abrasion-resistant water pump shell comprises a water pump shell body, a water inlet connector extending rightwards is formed in the middle of the right side wall of a right side plate of the water pump shell body, an abrasion-resistant sleeve is installed on the inner side wall of the water inlet connector, and the outer side wall of the abrasion-resistant sleeve is matched with the inner side wall of the water inlet connector. An annular limiting part extending in the radial direction is formed at the left end of the inner side wall of the water inlet connector, the left end face of the abrasion-resistant sleeve abuts against the right end face of the annular limiting part in a pressing mode, an annular groove is formed in the right end of the inner side wall of the water inlet connector, the stainless steel annular sleeve is installed in the annular groove, and the left end face of the stainless steel annular sleeve abuts against the right end face of the abrasion-resistant sleeve in a pressing mode. The detachable wear-resistant sleeve is installed on the inner side wall of the water inlet connector, so that the wear resistance of the water inlet connector is greatly improved, the water inlet connector is not prone to being abraded, when the wear-resistant sleeve is abraded or damaged, only the wear-resistant sleeve needs to be replaced, replacement, repair and maintenance are convenient, and the service life of the water pump shell is guaranteed.

Description

Technical Field:

[0001] The utility model relates to the technical field of pump casings, and more specifically, to a wear-resistant water pump casing with a wear-resistant member at the inlet. Background Art:

[0002] Existing water pump casings are generally manufactured by casting. The water inlet of the water pump, also known as the impeller water inlet, is one of the components in the water pump that is prone to wear. This wear is mainly caused by the following reasons:

[0003] Mechanical wear: During the long-term operation of the water pump, the outer diameter of the water inlet may be worn due to mechanical wear. This may be caused by impurities and particulate matter in the water or friction between other components inside the water pump and the water inlet.

[0004] Cavitation effect: When the water pump is in operation, if the water pressure is lower than the saturated vapor pressure, bubbles will form at the water inlet. When these bubbles burst in the high-pressure area, they will impact the water inlet, and over time, the surface of the water inlet will become rough, and even pits and cracks will appear.

[0005] Chemical corrosion: Chemical substances in the water, such as chlorine and sulfates, may corrode the water inlet, especially in the case of poor water quality, and this corrosion effect will be more obvious. Summary of the Utility Model:

[0006] The purpose of the utility model is to overcome the deficiencies of the prior art and provide a wear-resistant water pump casing with a wear-resistant member at the inlet. A detachable wear-resistant sleeve is installed on the inner side wall of the water inlet connector, greatly improving its wear resistance, making it not easy to wear. Moreover, when the wear-resistant sleeve is worn or damaged, it only needs to be replaced, and its replacement, repair, and maintenance are convenient, ensuring the service life of the water pump casing.

[0007] The solution of the utility model to solve the above technical problems is:

[0008] A wear-resistant water pump casing with a wear-resistant member at the inlet includes a water pump casing. A water inlet connector extending to the right is formed in the middle of the right side wall of the right side plate of the water pump casing. A wear-resistant sleeve is installed on the inner side wall of the water inlet connector, and the outer side wall of the wear-resistant sleeve is matched with the inner side wall of the water inlet connector. A radially extending annular limiting portion is formed at the left end of the inner side wall of the water inlet connector, and the left end face of the wear-resistant sleeve is pressed against the right end face of the annular limiting portion. An annular groove is formed at the right end of the inner side wall of the water inlet connector, and a stainless steel annular sleeve is installed in the annular groove, and the left end face of the stainless steel annular sleeve is pressed against the right end face of the wear-resistant sleeve.

[0009] A spline groove is formed on the inner side wall of the water inlet connector, and a spline protrusion is formed on the outer side wall of the wear-resistant sleeve. The spline protrusion is inserted into and cooperates with the spline groove.

[0010] The wear-resistant sleeve is a polytetrafluoroethylene sleeve.

[0011] An inner chamfer is formed on the inner side wall at the left end of the wear-resistant sleeve. A part of the inner side wall of the wear-resistant sleeve extends towards the middle, and the inner diameter of the inner side wall of the wear-resistant sleeve is smaller than the inner diameter of the annular limiting portion.

[0012] An outer annular groove is formed on the inner side wall at the right end of the annular groove. The right end of the outer annular groove extends out of the right end face of the water inlet connector. An internal thread is formed on the inner side wall of the left part of the annular groove. An external thread is formed on the outer side wall of the stainless steel annular sleeve, and it is screwed onto the internal thread of the annular groove. A radially extending edge portion is formed on the outer side wall at the right end of the stainless steel annular sleeve, and it is inserted into the outer annular groove.

[0013] An extending sleeve body portion extending to the right is formed at the inner side of the right end face of the wear-resistant sleeve, and the outer side wall of the extending sleeve body portion is closely attached to the inner side wall of the stainless steel annular sleeve.

[0014] The outstanding effect of the present utility model is:

[0015] A detachable wear-resistant sleeve is installed on the inner side wall of the water inlet connector, greatly improving its wear resistance, making it not easily worn. Moreover, when the wear-resistant sleeve is worn or damaged, only need to replace it, and its replacement, repair and maintenance are convenient, ensuring the service life of the water pump housing. Description of the drawings:

[0016] Figure 1 is a partial top view of the present utility model;

[0017] Figure 2 is a partial cross-sectional view of the present utility model;

[0018] Figure 3 is Figure 2 a partial enlarged view of Specific embodiments:

[0019] Embodiment, as shown in Figures 1 to 3As shown in the figure, a wear-resistant water pump housing with wear-resistant parts at the inlet includes a water pump housing 10. In the middle of the top surface of the water pump housing 10, there is an inner cavity extending downward. In the middle of the bottom surface of the inner cavity, there is an annular sleeve part extending upward. In the middle of the right side wall of the right side plate of the water pump housing 10, there is an inlet connection head 11 extending to the right (the middle through hole of the inlet connection head 11 is the inlet). The left end of the inlet connection head 11 extends out of the middle through hole of the right side plate of the water pump housing 10 and communicates with the inner cavity. On the left side wall of the left side plate of the water pump housing 10, there is an outlet connection head. The right end of the outlet connection head extends out of the middle through hole of the right side plate of the water pump housing 10 and is formed on the left side wall of the annular sleeve part and communicates with the through hole formed in the middle of the left side wall of the annular sleeve part, and it communicates with the internal space of the annular sleeve part.

[0020] Furthermore, a wear-resistant sleeve 20 is installed on the inner side wall of the inlet connection head 11. The outer side wall of the wear-resistant sleeve 20 is matched with the inner side wall of the inlet connection head 11. At the left end of the inner side wall of the inlet connection head 11, there is a radially extending annular limiting part 12. The left end face of the wear-resistant sleeve 20 is pressed against the right end face of the annular limiting part 12. At the right end of the inner side wall of the inlet connection head 11, there is an annular groove 13. The stainless steel annular sleeve 30 is installed in the annular groove 13. The left end face of the stainless steel annular sleeve 30 is pressed against the right end face of the wear-resistant sleeve 20.

[0021] Furthermore, spline grooves are formed on the inner side wall of the inlet connection head 11, and spline protruding parts are formed on the outer side wall of the wear-resistant sleeve 20. The spline protruding parts are inserted into the spline grooves and are matched. Connecting the wear-resistant sleeve 20 in a spline manner makes it not easy for the wear-resistant sleeve 20 to rotate relative to the inner side wall of the inlet connection head 11, ensuring the firmness of the positioning connection.

[0022] Furthermore, the wear-resistant sleeve 20 is a polytetrafluoroethylene sleeve, which has good wear resistance.

[0023] Furthermore, an inner chamfer is formed on the inner side wall at the left end of the wear-resistant sleeve 20. Part of the inner side wall of the wear-resistant sleeve 20 extends towards the middle, and the inner diameter of the inner side wall of the wear-resistant sleeve 20 is smaller than the inner diameter of the annular limiting part 12.

[0024] Furthermore, an outer annular groove is formed on the inner side wall at the right end of the annular groove 13. The right end of the outer annular groove extends out of the right end face of the inlet connection head 11. An internal thread is formed on the inner side wall at the left part of the annular groove 13. An external thread is formed on the outer side wall of the stainless steel annular sleeve 30, and it is screwed on the internal thread of the annular groove 13. A radially extending edge part 31 is formed on the outer side wall at the right end of the stainless steel annular sleeve 30, and it is inserted into the outer annular groove. The outer side wall of the radially extending edge part 31 is closely attached to the inner side wall of the outer annular groove, and the left end face of the radially extending edge part 31 is pressed against the left end face of the outer annular groove.

[0025] Furthermore, an extended sleeve body portion 21 extending to the right is formed at the inner side of the right end face of the wear-resistant sleeve 20, and the outer side wall of the extended sleeve body portion 21 is closely attached to the inner side wall of the stainless steel annular sleeve 30.

[0026] Furthermore, a chamfer is formed on the inner side wall at the right end of the extended sleeve body portion 21.

[0027] Furthermore, a first sealing ring 1 is nested in the annular groove formed in the middle of the left end face of the wear-resistant sleeve 20, and the left end face of the first sealing ring 1 is pressed against the right end face of the annular limiting portion 12.

[0028] Furthermore, a second sealing ring 2 is nested in the annular groove formed in the middle of the left end face of the stainless steel annular sleeve 30, and the left end face of the second sealing ring 2 is pressed against the right end face of the wear-resistant sleeve 20.

[0029] Furthermore, a third sealing ring 3 is nested in the annular groove formed on the right end face of the stainless steel annular sleeve 30.

[0030] When this embodiment is in use, the wear-resistant sleeve 20 is clamped and fixed by the stainless steel annular sleeve 30, so that the incoming water liquid is blocked by the wear-resistant sleeve 20, reducing the wear on the inner side wall of the water inlet connector 11 and improving its service life.

[0031] At the same time, its connection structure enables the wear-resistant sleeve 20 to be disassembled and replaced after the stainless steel annular sleeve 30 is disassembled, which is very convenient. Among them, a plurality of concave holes can be formed on the right end face of the stainless steel annular sleeve 30. When disassembling the stainless steel annular sleeve 30, the rod portions of the rotating tool are inserted into the corresponding concave holes, and the stainless steel annular sleeve 30 is rotated to disassemble it. Then, only by moving the wear-resistant sleeve 20 to the right, the disassembly is completed. Then, a new wear-resistant sleeve 20 is installed, and its installation and disassembly are convenient.

[0032] At the same time, a plurality of reinforcing ribs are formed on the outer side wall of the water inlet connector 11, a connecting flange is formed at the right end of the outer side wall of the water inlet connector 11, a radially extending reinforcing portion is formed on the outer side wall at the right end of the corresponding reinforcing rib, and its right end is formed on the left end face of the connecting flange. This structure improves the connection firmness between the connecting flange and the outer side wall of the water inlet connector 11.

Claims

1. A wear-resistant water pump housing with a wear-resistant part at the inlet, comprising a water pump housing (10), characterized in that: A water inlet connector (11) extending to the right is formed in the middle of the right side wall of the right side plate of the water pump housing (10); a wear-resistant sleeve (20) is installed on the inner side wall of the water inlet connector (11); the outer side wall of the wear-resistant sleeve (20) matches the inner side wall of the water inlet connector (11); a radially extending annular limiting portion (12) is formed at the left end of the inner side wall of the water inlet connector (11); the left end face of the wear-resistant sleeve (20) is pressed against the right end face of the annular limiting portion (12); an annular groove (13) is formed at the right end of the inner side wall of the water inlet connector (11); a stainless steel annular sleeve (30) is installed in the annular groove (13); the left end face of the stainless steel annular sleeve (30) is pressed against the right end face of the wear-resistant sleeve (20).

2. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 1, characterized in that: A spline groove is formed on the inner wall of the water inlet connector (11), and a spline protrusion is formed on the outer wall of the wear-resistant sleeve (20), and the spline protrusion is inserted into the spline groove and matched with each other.

3. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 1, characterized in that: The wear-resistant sleeve (20) is a polytetrafluoroethylene sleeve.

4. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 1, characterized in that: The inner wall of the left end of the wear-resistant sleeve (20) is formed with an inner chamfer, a portion of the inner wall of the wear-resistant sleeve (20) extends toward the middle, and the inner diameter of the inner wall of the wear-resistant sleeve (20) is smaller than the inner diameter of the annular limiting portion (12).

5. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 1, characterized in that: An outer annular groove is formed on the inner wall at the right end of the annular groove (13), and the right end of the outer annular groove extends out of the right end surface of the water inlet connector (11). An internal thread is formed on the inner wall of the left part of the annular groove (13). An external thread is formed on the outer wall of the stainless steel annular sleeve (30), which is screwed onto the internal thread of the annular groove (13). A radially extending edge (31) is formed on the outer wall at the right end of the stainless steel annular sleeve (30), which is inserted into the outer annular groove.

6. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 5, characterized in that: An extension sleeve body portion (21) extending to the right is formed on the inner side of the right end surface of the wear-resistant sleeve (20), and the outer side wall of the extension sleeve body portion (21) is in close contact with the inner side wall of the stainless steel annular sleeve (30).

7. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 6, characterized in that: A chamfer is formed on the inner side wall of the right end of the extending sleeve body (21).

8. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 1, characterized in that: A first sealing ring (1) is embedded in an annular groove formed in the middle of the left end surface of the wear-resistant sleeve (20), and the left end surface of the first sealing ring (1) is pressed against the right end surface of the annular limiting portion (12).

9. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 1, characterized in that: A second sealing ring (2) is nested in an annular groove formed in the middle of the left end surface of the stainless steel annular sleeve (30), and the left end surface of the second sealing ring (2) is pressed against the right end surface of the wear-resistant sleeve (20).

10. A wear-resistant water pump housing with wear-resistant parts at the inlet according to claim 1, characterized in that: A third sealing ring (3) is nested in an annular groove formed on the right end surface of the stainless steel annular sleeve (30).

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