An anti-backflow water pump facilitating lubricant addition

Abstract

The present invention discloses an anti-backflow water pump facilitating lubricant addition, which comprises a pump housing, a casing, a bearing, a rotating shaft, a first spring, a first sealing ring, a knob, a connecting rod, a cam, a through hole, a vertical pipe, an oil inlet, a first impeller, a second sealing ring, a fixed shaft, a second impeller, a second spring, a baffle plate, a water inlet pipe, a groove and a water outlet pipe. The anti-backflow water pump facilitating lubricant addition has a simple structure and convenient operation. The rotation of the second impeller generates an axial thrust on the water source, and in cooperation with the centrifugal pump, the efficiency of water source transmission of the device is improved. After use, backflow of the water source is avoided, and economic losses caused by backflow of the water source due to forgetting to close the check valve after use are avoided; when adding lubricant, the lubricant flows into the bearing through the through hole by rotating the knob, which simplifies the operation, avoids the problem of disassembling the device for lubricant addition in the traditional method, reduces the working difficulty of the operator and improves the working efficiency.

Description

Technical Field

[0001] The present invention relates to a water pump, in particular to an anti-backflow water pump facilitating lubricant addition, belonging to the technical field of water pumps. Background Technique

[0002] A water pump is a machine for transporting liquids or increasing the pressure of liquids. It transmits the mechanical energy of the prime mover or other external energy to the liquid, increasing the energy of the liquid. It is mainly used to transport liquids including water, oil, acid-base solutions, emulsions, suspension emulsions, and liquid metals, etc. It can also transport liquid-gas mixtures and liquids containing suspended solids. The technical parameters of the water pump performance include flow rate, suction lift, head, shaft power, water power, efficiency, etc. According to different working principles, it can be divided into types such as positive displacement water pumps and vane pumps. A positive displacement pump uses the change in the volume of its working chamber to transfer energy, and a vane pump uses the interaction between the rotating vane and water to transfer energy, including types such as centrifugal pumps, axial flow pumps, and mixed flow pumps.

[0003] At present, water pumps on the market all achieve the purpose of transporting water sources through equipment, which is especially suitable for irrigation in high places and is widely used due to greatly reducing the labor intensity. However, for centrifugal pumps, since the inside of the pump casing needs to be in a vacuum state, the actual situation cannot achieve absolute vacuum, thus limiting the pumping height of the centrifugal pump. If the stop valve is forgotten to be closed after use, the water source inside the pump casing will flow back, increasing the workload; and after long-term use, lubricant needs to be added to the bearing, and currently, adding lubricant requires disassembly for smearing, which is rather troublesome and increases the working difficulty. Therefore, an anti-backflow water pump facilitating lubricant addition is proposed for the above problems. Summary of the Invention

[0004] The purpose of the present invention is to provide an anti-backflow water pump facilitating lubricant addition in order to solve the above problems.

[0005] The present invention achieves the above object through the following technical solutions. An anti-backflow water pump facilitating lubricant addition includes a pump housing and a housing located on one side of the pump housing. A bearing is fixedly installed inside the housing, and a rotating shaft is rotatably connected inside the bearing. A first spring is fixedly connected to one side wall of the housing, and a first sealing ring is fixedly connected to the end of the first spring; a knob is provided at the top of the housing. The bottom end of the knob is fixedly connected to a connecting rod, and a cam is fixedly connected to the bottom end of the connecting rod. A through hole penetrates through the cam; a vertical pipe is fixedly installed on one side of the connecting rod. The top end of the vertical pipe is fixedly connected to an oil inlet, and the bottom end of the vertical pipe is in sealing contact with the top surface of the cam; the end of the rotating shaft is fixedly connected to a first impeller, and a second sealing ring is rotatably connected to one end of the rotating shaft. One end of the first impeller is fixedly connected to a fixed shaft, and the end of the fixed shaft is fixedly connected to a second impeller. A second spring is fixedly connected inside the outer wall of the fixed shaft, and a baffle is fixedly connected to the end of the second spring; a water inlet pipe is fixedly connected to one side of the pump housing. A groove is formed in the inner wall of the water inlet pipe, and the top end of the baffle extends into the groove. A water outlet pipe is fixedly connected to the top end of the pump housing.

[0006] Preferably, the number of the first springs is two, and first sealing rings are respectively fixedly connected to the ends of the two first springs.

[0007] Preferably, the rotating shaft penetrates through and is rotatably connected to the housing, the first sealing ring, the rotating shaft, and the second sealing ring.

[0008] Preferably, the diameter of the vertical pipe is the same as the diameter of the through hole, and the vertical pipe penetrates through the top of the housing and extends to the surface of the cam.

[0009] Preferably, the number of the second springs is two, and two baffles are respectively fixedly connected to the two second springs.

[0010] Preferably, the baffle is semi-circular, and the baffle is slidably connected into the groove.

[0011] The beneficial effects of the present invention are as follows:

[0012] 1. The structure of the anti-backflow water pump facilitating lubricant addition is simple and the operation is convenient. The rotation of the second impeller generates an axial thrust on the water source, and in cooperation with the centrifugal pump, the equipment improves the efficiency of transmitting the water source, improves the utilization rate. And when the use is finished, the elastic potential energy of the second spring is released to make the baffle seal the water inlet, avoiding the backflow of the water source, avoiding unnecessary troubles, and avoiding the economic losses caused by the backflow of the water source due to forgetting to close the stop valve after the use is finished.

[0013] 2. When adding lubricant to the anti-backflow water pump that facilitates lubricant addition, by rotating the knob, the lubricant flows through the through-hole into the bearing, simplifying the operation, avoiding the problem of disassembling the equipment for lubricant addition in the traditional method, reducing the work difficulty of the operator, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0015] Figure 2 It is a schematic side view structure diagram of the pump housing of the present invention;

[0016] Figure 3 For the present invention Figure 1 Schematic diagram of the partial structure at A in the present invention;

[0017] Figure 4 For the present invention Figure 1 Schematic diagram of the partial structure at B in the present invention.

[0018] In the figure: 1. Pump housing, 2. Housing, 3. Bearing, 4. Rotating shaft, 5. First spring, 6. First sealing ring, 7. Knob, 8. Connecting rod, 9. Cam, 10. Through-hole, 11. Vertical pipe, 12. Oil inlet, 13. First impeller, 14. Second sealing ring, 15. Fixed shaft, 16. Second impeller, 17. Second spring, 18. Baffle, 19. Water inlet pipe, 20. Groove, 21. Water outlet pipe. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0020] Please refer to Figures 1-4A kind of anti-backflow water pump convenient for adding lubricant is shown, which includes a pump housing 1 and a housing 2 located on one side of the pump housing 1. A bearing 3 is fixedly installed inside the housing 2, and a rotating shaft 4 is rotatably connected inside the bearing 3. The first impeller 13 and the second impeller 16 are driven to rotate by the rotating shaft 4. A first spring 5 is fixedly connected to one side wall of the housing 2, and a first sealing ring 6 is fixedly connected to the end of the first spring 5; A knob 7 is provided at the top of the housing 2. The bottom end of the knob 7 is fixedly connected with a connecting rod 8, and the bottom end of the connecting rod 8 is fixedly connected with a cam 9. A through hole 10 penetrates through the cam 9; A vertical pipe 11 is fixedly installed on one side of the connecting rod 8. The top end of the vertical pipe 11 is fixedly connected with an oil inlet 12, and the bottom end of the vertical pipe 11 is in sealed contact with the top surface of the cam 9; The end of the rotating shaft 4 is fixedly connected with a first impeller 13, and a second sealing ring 14 is rotatably connected to one end of the rotating shaft 4. One end of the first impeller 13 is fixedly connected with a fixed shaft 15, and the end of the fixed shaft 15 is fixedly connected with a second impeller 16. A second spring 17 is fixedly connected inside the outer wall of the fixed shaft 15, and the end of the second spring 17 is fixedly connected with a baffle 18. The backflow of water is prevented by the baffle 18; A water inlet pipe 19 is fixedly connected to one side of the pump housing 1. A groove 20 is formed in the inner wall of the water inlet pipe 19, and the top end of the baffle 18 extends into the groove 20. A water outlet pipe 21 is fixedly connected to the top end of the pump housing 1.

[0021] As a technical optimization scheme of the present invention, the number of the first springs 5 is two, and the ends of the two first springs 5 are respectively fixedly connected with the first sealing rings 6. It is convenient for the movement of the first sealing ring 6.

[0022] As a technical optimization scheme of the present invention, the rotating shaft 4 respectively penetrates and is rotatably connected to the housing 2, the first sealing ring 6, the rotating shaft 3 and the second sealing ring 14, which is convenient for the rotation of the rotating shaft 4.

[0023] As a technical optimization scheme of the present invention, the diameter of the vertical pipe 11 is the same as the diameter of the through hole 10, and the vertical pipe 11 penetrates through the top of the housing 2 and extends to the surface of the cam 9, which is convenient for the lubricant to flow into the bearing 4 through the through hole 10.

[0024] As a technical optimization scheme of the present invention, the number of the second springs 17 is two, and the two second springs 17 are respectively fixedly connected with two baffles 18, which is convenient for the baffle 18 to return to its original position after moving.

[0025] As a technical optimization scheme of the present invention, the baffle 18 is semicircular, and the baffle 18 is slidably connected into the groove 20, which is convenient for the movement of the baffle 18.

[0026] When the present invention is in use, first, the water inlet pipe 19 is externally connected to a water source. The motor drives the rotation of the rotating shaft 4, causing the first impeller 13 and the second impeller 16 at the end of the fixed shaft 15 to rotate simultaneously. When the fixed shaft 15 rotates, due to the centrifugal force, the baffle 18 moves into the groove 20, opening the water inlet pipe 19. The water source enters the pump casing 1 due to the axial thrust generated by the second impeller 16 and flows out from the water outlet pipe 21 through the first impeller 13. When the fixed shaft 15 stops rotating, the second spring 17 drives the baffle 18 back to its original position due to the elastic potential energy, closing the water inlet pipe 19 to prevent the backflow of the water source. When lubricant needs to be added, the lubricant is poured into the vertical pipe 11 from the oil inlet 12. By rotating the knob 7, the connecting rod 8 drives the cam 9 to rotate. The cam 9 pushes the first sealing ring 6 to move horizontally. At the same time, the through hole 10 on the cam 9 rotates to coincide with the bottom pipe orifice of the vertical pipe 11, so that the lubricant flows into the interior of the bearing 3 through the through hole 10. Continuing to rotate the knob 7, the first sealing ring 6 returns to its original position due to the elastic potential energy of the first spring 5, thus completing the addition of the lubricant.

[0027] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above exemplary embodiments, and without departing from the spirit or basic characteristics of the present invention, the present invention can be implemented in other specific forms. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be regarded as limiting the claimed claim.

[0028] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An anti-backflow water pump facilitating lubricant addition, comprising a pump housing (1) and a housing (2) located on one side of the pump housing (1), characterized in that: Inside the housing (2), a bearing (3) is fixedly installed. Inside the bearing (3), a rotating shaft (4) is rotatably connected. On one side wall of the housing (2), a first spring (5) is fixedly connected, and the end of the first spring (5) is fixedly connected to a first sealing ring (6); on the top of the housing (2), there is a knob (7). The bottom end of the knob (7) is fixedly connected to a connecting rod (8), and the bottom end of the connecting rod (8) is fixedly connected to a cam (9). A through hole (10) penetrates through the cam (9); on one side of the connecting rod (8), a vertical pipe (11) is fixedly installed. The top end of the vertical pipe (11) is fixedly connected to an oil inlet (12), and the bottom end of the vertical pipe (11) is in sealing contact with the top surface of the cam (9); the end of the rotating shaft (4) is fixedly connected to a first impeller (13), and one end of the rotating shaft (4) is rotatably connected to a second sealing ring (14). One end of the first impeller (13) is fixedly connected to a fixed shaft (15), and the end of the fixed shaft (15) is fixedly connected to a second impeller (16). Inside the outer wall of the fixed shaft (15), a second spring (17) is fixedly connected, and the end of the second spring (17) is fixedly connected to a baffle (18); on one side of the pump housing (1), a water inlet pipe (19) is fixedly connected. A groove (20) is formed in the inner wall of the water inlet pipe (19), and the top end of the baffle (18) extends into the groove (20). The top end of the pump housing (1) is fixedly connected to a water outlet pipe (21); The diameter of the vertical pipe (11) is the same as the diameter of the through hole (10), and the vertical pipe (11) penetrates through the top of the housing (2) and extends to the surface of the cam (9); the baffle (18) is semicircular, and the baffle (18) is slidably connected into the groove (20).

2. The anti-backflow water pump facilitating lubricant addition according to claim 1, wherein: The number of the first springs (5) is two, and the ends of the two first springs (5) are respectively fixedly connected to the first sealing rings (6).

3. The anti-backflow water pump facilitating lubricant addition according to claim 1, characterized in that: The rotating shaft (4) penetrates through and is rotatably connected to the housing (2), the first sealing ring (6), the bearing (3), and the second sealing ring (14).

4. The anti-backflow water pump facilitating lubricant addition according to claim 1, wherein: The number of the second springs (17) is two, and the two second springs (17) are respectively fixedly connected to the two baffles (18).

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