Low negative pressure type water pump

Abstract

The invention discloses a fan blade which comprises a motor (1), a key (2), a spring washer (3), a nut (4) and blades (5). Each blade (5) comprises a circular ring (5-1), a blade body (5-2) and a rib (5-3), the blade body (5-2) is connected with the circular ring (5-1), and the rib (5-3) is connected with the blade body (5-2) and the circular ring (5-1); an axial hole is formed in the circular ring (5-1), a radial hole is formed in the rib (5-3), and the two holes are communicated with each other; when the water pump is used, the motor (1) drives the blade body (5-2) to rotate, the ribs (5-3) on the back face of the blade body (5-2) form negative pressure, water in a low-pressure area is pumped up through the negative pressure, the pressurized amount of the water in the low-pressure area is greatly increased, and therefore the working efficiency of the water pump is improved.

Description

[0001] 1. Field:

[0002] The invention relates to a water pump for raising low-pressure water to high-pressure water.

[0003] 2. Background:

[0004] In the prior art water pump, when the blade speed is very high, the time between blades is very short, so the amount of water sucked in is very small, resulting in low working efficiency and high working cost. Of course, this situation will also occur when the blade area is relatively large and the speed is normal. 3. Summary of the invention:

[0005] The problem to be solved by the present invention is: adopting a method to increase the working efficiency of a water pump when the blade speed is very high.

[0006] In order to solve the above problems, the working principle of the low negative pressure water pump of the present invention is as follows: a channel is established between the back side of the blade (negative pressure zone) and the water in the low pressure zone. When the blade rotates at high speed, the hole in the channel entering the negative pressure zone generates negative pressure. The negative pressure sucks the water in the low pressure zone through the channel to the negative pressure zone on the back side of the blade. In this way, on the one hand, the low pressure water entering the negative pressure zone is greatly increased. On the other hand, the problem that the water entering the negative pressure zone is greatly reduced due to the very high speed rotation of the blade, thereby affecting the working efficiency of the water pump, is solved. According to the above working principle, the technical solution is as follows: a rib is added to the back side of the blade body, and a through hole is opened in the rib. The through hole passes through the circular ring and communicates with the axial hole of the circular ring; the axial hole of the circular ring communicates with the low water zone, and the other end hole in the rib is in the negative pressure zone on the back side of the blade body.

[0007] After adopting the above method, when the blades rotate at a very high speed, the negative pressure at the negative pressure area will increase significantly, and the water sucked from the low pressure area will also increase significantly, thereby greatly increasing the working efficiency of the water pump. Of course, when the plane size of the blades is relatively large, the use of the present invention can also greatly increase the working efficiency of the water pump. 4. Description of the drawings:

[0008] Attached Figure 1 It is a partial structural diagram of the first embodiment of the low negative pressure water pump of the present invention;

[0009] Attached Figure 2 It is a partial structural diagram of the first embodiment of the low negative pressure water pump of the present invention;

[0010] Attached Figure 3 It is a partial structural diagram of the second embodiment of the low negative pressure water pump of the present invention;

[0011] Attached Figure 4 It is a partial structural diagram of the third embodiment of the low negative pressure water pump of the present invention;

[0012] Attached Figure 5 It is a partial structural diagram of the fourth embodiment of the low negative pressure water pump of the present invention. Five, embodiment:

[0013] In the attached Figure 1 To Attachment Figure 2 In the first embodiment shown, the low negative pressure water pump of the present invention comprises a motor (1), a key (2), a spring washer (3), a nut (4) and a blade (5); the blade (5) comprises a ring (5-1), a blade body (5-2) and a rib (5-3), the blade body (5-2) is connected to the ring (5-1), and the rib (5-3) is connected to the blade body (5-2) and the ring (5-1); an axial hole is opened in the ring (5-1), a radial hole is opened in the rib (5-3), and the two holes are connected; the key (2) is placed in the keyway of the output shaft of the motor (1), the blade (5) is sleeved on the output shaft of the motor (1), and the spring washer (3) and the nut (4) are on the output shaft of the motor (1). When in use, the motor (1) is started, and the motor (1) drives the blade (5) to rotate, and the front side A of the blade body (5-2) pushes water to flow to the high-pressure area of ​​the water. At the same time, a negative pressure is formed on the back side of the blade body (5-2), and the negative pressure draws up the water in the hole (B) of the rib (5-3) and the water in the hole of the ring (5-1), and the water in the low-pressure area enters the hole at the end of the ring (5-1) under the action of the negative pressure, so that the water in the low-pressure area continuously enters the back side of the blade body (5-2), and this water is pushed to the high-pressure water area by the front side of the blade body (5-2) at the back during the high-speed rotation of the blade (5); of course, the negative pressure area at the edge of the blade body (5-2) will still suck a certain amount of water into the back side of the blade body (5-2), so that when the blade (5) rotates at a high speed, two parts of the blade (5) are filled with water. At this time, if the rotation speed of the blade (5) is very high, the blade (5) moves too fast, and the water entering from the back side of the blade (2) will be greatly reduced, while the water entering from the rib (5-3) will be greatly increased, thereby increasing the working efficiency of the water pump. In particular, when the plane size of the blade body (5-2) is relatively large, its efficiency will also increase.

[0014] In the attached Figure 1 To Attachment Figure 3 The second embodiment shown is different from the first embodiment in that the rib (5-3) has not only one radial hole but also multiple axial holes. Since these axial holes will also generate negative pressure when the blade (5) rotates, the total suction force of the rib (5-3) will increase, thereby increasing the amount of water sucked into the low-pressure area. The working efficiency of the blade (5) will be further increased during the rotation process. Moreover, when the rotation speed of the blade (5) is very high or the plane size of the blade (5) is very large, the effect is more obvious.

[0015] In the attached Figure 1 To Attachment Figure 2 , and attached Figure 4The third embodiment shown is different from the first embodiment in that a circular groove is formed around the hole (B) formed in the ring (5-1); the groove passes through the hole (K) formed in the ring (5-1). Thus, when the ring (5-1) rotates at a high speed, the low-pressure water entering the groove will also rotate in the groove; thus, the water in the groove will generate a certain speed, the water entering the hole formed in the ring (5-1) will increase, and the working efficiency will also increase.

[0016] In the attached Figure 1 To Attachment Figure 2 , and attached Figure 5 The fourth embodiment shown is different from the third embodiment in that a groove is formed on the cylindrical surface of the ring (5-1), and the groove coincides with the hole (K). Thus, when the blade (5) rotates, the water in the groove will also generate a certain rotation speed, so that under the negative pressure of the hole (B), a large amount of water in the groove enters the hole (B). Therefore, the working efficiency of the water pump is also increased.

[0017] The present invention is not limited to the above three methods, and new methods formed by combining the above methods are also the content of the present invention.

[0018] The present invention is not only applicable to water pumps, but also to fans.

Claims

1. A low negative pressure water pump comprises a motor (1), a key (2), a spring washer (3) and a nut (4), wherein the key (2) is on the output shaft, and is characterized in that: The rib (5-3) is connected with the blade (5-2) and the ring (5-1); an axial hole is formed in the ring (5-1); a radial hole is formed in the rib (5-3); and the two holes are connected; when in use, the motor (1) is started, the motor (1) drives the blade (5) to rotate, and the front side A of the blade (5-2) pushes water to flow to the high-pressure area of ​​the water. At the same time, a negative pressure is formed on the back side of the blade (5-2), and the water in the hole (B) of the rib (5-3) and the hole (B) of the ring (5-1) are pushed into the water. The water in the low-pressure area is sucked up, and the water in the low-pressure area enters the hole at the end of the ring (5-1) under the action of negative pressure, so that the water in the low-pressure area continuously enters the back of the blade body (5-2), and this water is pushed to the high-pressure water area by the front of the blade body (5-2) behind during the high-speed rotation of the blade (5); of course, the negative pressure area at the edge of the blade body (5-2) will still suck a certain amount of water into the back of the blade body (5-2), so that when the blade (5) rotates at a high speed, water enters two parts; At this time, if the rotation speed of the blade (5) is very high, the blade (5) moves too fast, the water entering from the back side of the blade (2) will be greatly reduced, and the water entering from the rib (5-3) will be greatly increased, thereby increasing the working efficiency of the water pump.

2. The low negative pressure water pump according to claim 1, characterized in that: The rib (5-3) is provided with not only one radial hole but also a plurality of axial holes. Since these axial holes will also generate negative pressure when the blade (5) rotates, the total suction force of the rib (5-3) will increase, thereby increasing the amount of water sucked into the low-pressure area. The working efficiency of the blade (5) will be further increased during the rotation process. Moreover, when the rotation speed of the blade (5) is very high or the plane size of the blade (5) is very large, the effect is more obvious.

3. The low negative pressure water pump according to claim 1 or 2, characterized in that: A circular groove is formed around the hole (B) formed in the circular ring (5-1); the groove passes through the hole (K) formed in the circular ring (5-1); thus, when the circular ring (5-1) rotates at a high speed, the low-pressure water entering the groove will also rotate in the groove; thus, the water in the groove will generate a certain speed, the amount of water entering the hole formed in the circular ring (5-1) will increase, and the working efficiency will also increase.

4. The low negative pressure water pump according to claim 1, 2 or 3, characterized in that: A groove is formed on the cylindrical surface of the ring (5-1), and the groove coincides with the hole (K); thus, when the blade (5) rotates, the water in the groove will also generate a certain rotation speed, and thus, under the negative pressure of the hole (B), a large amount of water in the groove will enter the hole (B); therefore, the working efficiency of the water pump will also be increased.

5. The present invention is not only applicable to water pumps, but also applicable to fans.

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