Water pump

Abstract

A water pump comprises a motor, a pump shell and water blades. The motor and the pump shell are fixed together through a plurality of bolts transversely penetrating through the motor and the pump shell. The pump shell comprises a pump body and a pump cover. A water outlet channel is arranged on the pump body; a water inlet channel is arranged on the center line of the pump cover; a circle of spiral cavity channel is formed in the inner circumferential wall of the pump body, a space interval formed by the starting end and the terminal end of the spiral cavity channel just faces the water outlet channel, and the interval position of the spiral cavity channel corresponds to a hole position in the root of the water outlet channel; the anti-backflow end face used for preventing water flowing out of the water outlet channel from flowing back into the pump shell is arranged at the starting end of the cavity channel, and the arc wall of the terminal end of the cavity channel is tangent to the arc wall of the water outlet channel. And water at the root of the water outlet channel can be prevented from flowing back into the pump shell, so that the water pumping energy efficiency can be greatly improved. According to the invention, few parts are needed, so that the structure is simple and reasonable.

Description

Technical Field

[0001] The present invention relates to a water pump. Background Art

[0002] As we know, the working principle of a water pump is that an electric motor drives the water impeller in the pump housing to rotate at a high speed, so as to suck water into the pump housing and then pump it out quickly. The energy efficiency of a water pump is an important index for evaluating the performance of the water pump. For this reason, people adopt various improved structures to improve the energy efficiency. For example, the water pump with improved energy efficiency disclosed in the patent publication No. CN 217107467 U integrally forms a sleeve on the outer plate of the impeller, and a "convex"-shaped retaining ring is sleeved outside the sleeve with a gap, and a retaining wall for preventing the retaining ring from centrifugally slipping out of the sleeve is provided in the water distribution wheel, so that water can be prevented from flowing out from the periphery of the water suction port of the impeller, thereby improving the water pumping effect. In practice, the applicant found that the structure of the above water pump is relatively complex and the production cost is relatively high. Summary of the Invention

[0003] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a water pump with a simple and reasonable structure and capable of improving energy efficiency.

[0004] In order to solve the above existing technical problems, the present invention adopts the following technical solutions: A water pump, comprising an electric motor, a pump housing and a water impeller, wherein: The electric motor and the pump housing are fixed together by a plurality of bolts passing through horizontally; The pump housing includes a pump body and a pump cover; a water outlet channel is provided on the pump body; a water inlet channel is provided on the center line of the pump cover; a spiral channel is provided on the inner peripheral wall of the pump body, and the space interval formed by the starting end and the terminal end thereof is exactly opposite to the water outlet channel, and their interval positions correspond to the hole positions at the root of the water outlet channel; an anti-backflow end face for preventing the water about to flow out from the water outlet channel from flowing back into the pump housing is provided at the starting end of the channel, and the arc wall at the terminal end is tangent to the arc wall of the water outlet channel; The water impeller is arranged in the space formed by the channel of the pump housing and is connected to the motor shaft of the electric motor.

[0005] In an improved scheme of the above water pump, the inner end wall of the channel is a trumpet-shaped groove that gradually deepens from shallow to deep on the side close to the center of the circle, and the bottommost end of its groove bottom is tangent to the hole wall of the water outlet channel.

[0006] In an improved scheme of the above water pump, a convex ring is provided at the end of the water impeller where the water inlet is located; a water impeller energy efficiency ring is sleeved outside the convex ring with a gap.

[0007] In an improved scheme of the above water pump, the outer end face of the water impeller is parallel to the outer end face of the channel 22, but lower than the outer end face of the channel.

[0008] In the improvement scheme of the above-mentioned water pump, the outer end face of the water blade is 2 to 4 mm lower than the outer end face of the cavity channel.

[0009] In the improvement scheme of the above-mentioned water pump, the outer end face of the cavity channel is flush with the inner end face of the pump cover.

[0010] Compared with the prior art, the beneficial effects of the present invention are as follows: 1) Since the water pump includes a motor, a pump housing, and a water blade, and it requires fewer components, its structure is simple and reasonable; 2) Since a spiral cavity channel is provided on the inner peripheral wall of the pump body, the space interval formed by the starting end and the terminal end thereof is exactly opposite to the water outlet channel, and their interval distance is equivalent to the aperture of the water outlet channel; a backflow prevention end face for preventing the water flowing out of the water outlet channel from flowing back into the pump housing is provided at the starting end of the cavity channel, and the arc wall at the terminal end is tangent to the arc wall at the corresponding position of the water outlet channel. When pumping water, it can not only make the water flowing out of the spiral cavity channel enter the water outlet channel without resistance, but also prevent the water at the root of the water outlet channel from flowing back into the pump housing, thus greatly improving the energy efficiency of pumping water.

[0011] The following further describes the present invention in detail in conjunction with the accompanying drawings and specific embodiments: Description of the Drawings

[0012] Figure 1 is a three-dimensional schematic diagram of an embodiment of the present invention; Figure 2 is an assembly schematic diagram of an embodiment of the present invention; Figure 3 is a three-dimensional schematic diagram of an embodiment of the present invention without the pump cover installed; Figure 4 is a partial cross-sectional schematic diagram of an embodiment of the present invention without the pump cover installed; Figure 5 is Figure 4 a separated schematic diagram of some components of Figure 6 is Figure 5 an enlarged view of part I of Figure 7 is a three-dimensional schematic diagram of the water blade of the present invention placed into the pump body; Figure 8 is a sectional schematic diagram of the water blade of the present invention placed into the pump body. Specific Embodiments

[0013] The present invention is a water pump, as Figures 1 to 8 shown, including a motor 1, a pump housing 2, and a water blade 3, wherein: The motor 1 and the pump housing 2 are fixed together by a plurality of bolts 4 passing horizontally in the axial direction; The pump housing 2 includes a pump body 21 and a pump cover 22; an outlet channel 211 is provided on the pump body 21; an inlet channel 221 is provided on the center line of the pump cover 22; a spiral channel 212 is provided on the inner peripheral wall of the pump body 21, and the space interval formed by the starting end and the terminal end thereof is exactly opposite to the outlet channel 211, and their interval position corresponds to the hole position at the root of the outlet channel 211 to achieve smooth and unobstructed connection; a backflow prevention end face 2121 for preventing the water flowing out from the outlet channel 211 from flowing back into the pump housing 2 is provided at the starting end of the channel 212, and the arc wall 2122 at the terminal end is tangent to the arc wall of the outlet channel 211. As Figure 8 shown, when pumping water, it can not only make the water coming out of the spiral channel enter the outlet channel 211 without resistance, but also prevent the water at the root of the outlet channel 211 from flowing back into the pump housing 2, thus greatly improving the energy efficiency of pumping water.

[0014] The impeller 3 is arranged in the space formed by the channel 212 of the pump housing 2 and is connected to the motor shaft of the motor 1.

[0015] As can be seen from the above, the present invention requires fewer components, and while improving the energy efficiency, the structure of the water pump is simple and reasonable.

[0016] In this embodiment, as Figure 5 、 6 shown, the inner end wall of the channel 212 is a trumpet-shaped groove 2123 that gradually deepens towards the center of the circle on the side close to the center of the circle, and the bottommost end of its groove bottom is tangent to the hole wall of the outlet channel 211. In this way, the water coming out from the bottommost end of the groove bottom enters the outlet channel without resistance, and thus the energy efficiency of pumping water can be further improved.

[0017] Preferably, a convex ring 31 is provided at one end of the impeller 3 where the water inlet is located; a water leaf energy efficiency ring 5 is sleeved outside the convex ring 31 with a gap. When the motor pumps water, under the action of friction and centrifugal force, the water leaf energy efficiency ring 5 automatically slides outwards and adheres to the inner vertical wall of the pump cover 22, which can prevent the water in the pump housing from flowing back along the inner wall of the inlet channel into the inlet channel 221, thus not affecting the water inlet, and further improving the energy efficiency of pumping water.

[0018] In this embodiment, there are four bolts 4; bolt screwing holes (not shown in the figure) are evenly distributed on the outer peripheral wall of the pump housing 2, that is, the adjacent two bolt screwing holes are at 90 degrees. As Figure 1 shown, the outlet channel 211 is vertically upward. In actual use, after loosening the bolts, the entire pump housing can be rotated horizontally by 90 degrees, 180 degrees or 270 degrees to adjust the outlet direction of the outlet channel 211 (to make it horizontally left or right, vertically upward or downward) to facilitate the connection of the outlet channel during actual water pumping.

[0019] Preferably, the outer end face 32 of the water blade 3 is parallel to the outer end face 2124 of the cavity 212, but lower than the outer end face 2124 of the cavity 212 (usually 2 to 4 mm lower). This not only ensures the flexible rotation of the water blade but also helps improve the water pumping energy efficiency. The outer end face 2124 of the cavity 212 is flush with the inner end face of the pump cover.

[0020] Although the present invention has been described in detail with reference to the above embodiments, it will be apparent to those skilled in the art from this disclosure that various changes or modifications can be made to the present invention without departing from the principles and spirit of the invention as defined by the claims. Therefore, the detailed description of the embodiments of this disclosure is only for explanation and not for limiting the present invention, and the scope of protection is defined by the content of the claims.

Claims

1. A water pump, comprising a motor (1), a pump housing (2) and a water impeller (3), characterized in that: The motor (1) and the pump housing (2) are fixed together by a plurality of axially horizontally penetrating bolts (4); The pump housing (2) includes a pump body (21) and a pump cover (22); an outlet channel (211) is provided on the pump body (21); an inlet channel (221) is provided on the center line of the pump cover (22); a spiral channel (212) is provided on the inner peripheral wall of the pump body (21), and the space interval formed by the starting end and the terminal end thereof is exactly opposite to the outlet channel (211), and their interval position corresponds to the hole position at the root of the outlet channel (211); an anti-backflow end face (2121) for preventing the water about to flow out from the outlet channel (211) from flowing back into the pump housing (2) is provided at the starting end of the channel (212), and the arc wall (2122) at the terminal end is tangent to the arc wall of the outlet channel (211); The water impeller (3) is arranged in the space formed by the channel (212) of the pump housing (2) and is connected to the motor shaft of the motor (1).

2. The water pump according to claim 1, characterized in that, The inner end wall of the channel (212) is a flaring groove (2123) that gradually deepens towards the center of the circle on the side close to the center of the circle, and the bottommost end of its groove bottom is tangent to the hole wall of the outlet channel (211).

3. The water pump according to claim 1, wherein A convex ring (31) is provided at the end of the water impeller (3) where the water inlet is located; a water impeller energy efficiency ring (5) is sleeved outside the convex ring (31) with a gap.

4. The water pump according to any one of claims 1 to 3, characterized in that, The outer end face (32) of the water impeller (3) is parallel to the outer end face (2124) of the channel (212), but lower than the outer end face (2124) of the channel (212).

5. The water pump according to claim 4, wherein The outer end face (32) of the water impeller (3) is 2 to 4 mm lower than the outer end face (2124) of the channel (212).

6. The water pump according to claim 4, characterized in that The outer end face (2124) of the channel (212) is flush with the inner end face of the pump cover.

Images