Single-stage centrifugal water pump

Abstract

The invention discloses a single-stage centrifugal water pump, and relates to the technical field of centrifugal pumps, the single-stage centrifugal water pump comprises a fixing plate, a pump shell is fixedly connected to the fixing plate, a water adding opening is formed in the pump shell, a water adding pipe is fixedly connected in the water adding opening, one end of the water adding pipe is fixedly connected with a drainage one-way valve, and one end of the drainage one-way valve is fixedly connected with a sealing pipe; the sealing pipe is fixedly connected with the upper portion of the fixing plate, a piston is slidably connected into the sealing pipe, one end of the piston is rotationally connected with a connecting rod, one end of the connecting rod is rotationally connected with a cam, the outer wall of the sealing pipe is fixedly connected with a water inlet one-way valve, a coupling shaft is rotationally connected into the pump shell, and connecting mechanisms are arranged in the cam and the coupling shaft correspondingly. And the connecting mechanism comprises first rotating discs which are rotationally connected in the cam and the coupling respectively, connecting holes are formed in the first rotating discs, and the problem that the pump machine works to generate vibration, so that the cam drives the piston to move, water flow is discharged from the sealing pipe, and the water flow flows out is solved.

Description

Technical Field

[0001] The invention relates to the technical field of centrifugal pumps, and in particular to a single-stage centrifugal water pump. Background Art

[0002] A centrifugal water pump is a device that drives liquid to generate fluid pressure for transportation. When working in the pump, the air in the pump cavity needs to be fully removed to ensure the normal operation of the water pump. The water filling operation is to add the medium to be transported into the pump body first, so that the medium fills the entire pump cavity to remove the air in the pump cavity. In this way, there will be no gas in the water pump during formal operation, creating conditions for the stable operation of the water pump.

[0003] A patent application with publication number CN111946627B discloses a centrifugal water pump, comprising a dual-output shaft motor, a water pump assembly arranged on the left side of the dual-output shaft motor, and a water filling pump assembly arranged on the right side of the dual-output shaft motor, wherein the water filling pump assembly is used to fill water into a liquid outlet pipe of the water pump assembly before the water pump assembly is started; a left coupling assembly is arranged between the left rotating shaft of the water pump assembly and the left shaft of the dual-output shaft motor, and a right coupling assembly is arranged between the right rotating shaft of the water filling pump assembly and the right shaft of the dual-output shaft motor;

[0004] The existing centrifugal water pump can drive the water filling pump assembly to work while the water pump assembly does not work by controlling the dual output shaft motor to rotate in reverse. The liquid outlet pipe of the water pump assembly can be filled with water by utilizing the volumetric principle of the water filling pump assembly.

[0005] When the existing centrifugal water pump is in use, the output end of the motor will generate severe vibration when it is working. The severe vibration will cause the coupling assembly driven by the motor to temporarily disengage when rotating, causing the rotating shaft of the water pump assembly to deflect. The rotating shaft drives the piston to change inside the water pump, causing water to flow back and be discharged from the water pump assembly, thereby affecting the normal delivery operation of the pump. Summary of the invention

[0006] The purpose of the present invention is to propose a single-stage centrifugal water pump to solve the problem that when the motor output shaft is working, vibration will be generated, causing the rotating shaft of the water pump assembly to deflect, so that water will flow back and be discharged from the water pump assembly.

[0007] In order to achieve the above-mentioned purpose, the present invention adopts the following technology: a single-stage centrifugal water pump: it includes a fixed plate, a pump casing is fixedly connected to the fixed plate, a water inlet is arranged on the pump casing, a water inlet is fixedly connected to a water inlet pipe inside the water inlet, one end of the water inlet pipe is fixedly connected to a drainage one-way valve, one end of the drainage one-way valve is fixedly connected to a sealing tube, the sealing tube is fixedly connected to the top of the fixed plate, a piston is slidably connected to the inside of the sealing tube, one end of the piston is rotatably connected to a connecting rod, one end of the connecting rod is rotatably connected to a cam, the outer wall of the sealing tube is fixedly connected to the water inlet one-way valve, the inside of the pump casing is rotatably connected to the connecting rod, the outer wall of the sealing tube is fixedly connected to the water inlet one-way valve, and the inside of the pump casing is rotatably connected to the connecting rod. A coupling is connected, and a connecting mechanism is arranged inside the cam and the coupling, and the connecting mechanism includes a first turntable which is rotatably connected to the cam and the coupling respectively, a connecting hole is arranged on the first turntable, a magnetic rod is slidably connected inside the connecting hole, and a reversing mechanism is arranged on the fixed plate, and the reversing mechanism includes a movable plate slidably connected to the fixed plate, and a connecting rod is arranged at one end of the movable plate; when it is necessary to add water to the inside of the pump casing before the pump is used, the reversing mechanism and the connecting mechanism at one end of the cam can be connected, and when it is necessary to use the pump to pump water, the reversing mechanism and the connecting mechanism at one end of the coupling can be connected.

[0008] As a further description of a single-stage centrifugal water pump of the above technology:

[0009] The movable plate has an internal threaded connection with a screw rod, which is rotatably connected to the top of the fixed plate, a first bevel gear is rotatably connected to the screw rod, a second bevel gear is meshingly connected to one side of the first bevel gear, the second bevel gear is rotatably connected to the top of the fixed plate, a positioning rod is slidably connected to the inside of the movable plate, and the positioning rod is fixedly connected to the fixed plate.

[0010] As a further description of a single-stage centrifugal water pump of the above technology:

[0011] One end of the connecting rod is fixedly connected to a connecting disk, the interior of the connecting disk is fixedly connected to a first counterweight block, one end of the connecting disk is rotatably connected to a sliding rod, and the sliding rod and the interior of the moving plate are rotatably connected via a bearing.

[0012] As a further description of a single-stage centrifugal water pump of the above technology:

[0013] The fixed plate is fixedly connected with a motor, one end of the slide bar is slidably connected to the inside of the output end of the motor, and the shape of the slide bar is set to be T-shaped.

[0014] As a further description of a single-stage centrifugal water pump of the above technology:

[0015] The magnetic rod is slidably connected with a second turntable, one end of the second turntable is rotatably connected with a first fixing frame, the first fixing frame is fixedly connected to the sealing tube, and the second turntable is fixedly connected with a second counterweight block inside.

[0016] As a further description of a single-stage centrifugal water pump of the above technology:

[0017] The two first rotating disks are both fixedly connected with rotating rods, one end of one rotating rod is fixedly connected to the inside of the cam, and one end of the other rotating rod is fixedly connected to one end of the coupling shaft. The rotating rod is rotatably connected to the inside of the first fixed frame.

[0018] As a further description of a single-stage centrifugal water pump of the above technology:

[0019] A plurality of tooth grooves are arranged inside the first fixing frame, a fixing rod is arranged on one side of the tooth groove, the fixing rod is fixedly connected to the inside of the first fixing frame, a sliding block is slidably connected to the fixing rod, and a limiting rod is slidably connected inside the sliding block.

[0020] As a further description of a single-stage centrifugal water pump of the above technology:

[0021] A roller is rotatably connected to the limiting rod, a spring is fixedly connected between the magnetic rod and the second turntable, a limiting groove is provided at one end of the magnetic rod, an inner wall of the limiting groove is slidably connected to the roller, the limiting groove includes a first oblique section, a first parallel section is provided at one end of the first oblique section, and a second oblique section is provided at one end of the first parallel section.

[0022] As a further description of a single-stage centrifugal water pump of the above technology:

[0023] The upper surface of the sealing tube is slidably connected with a second fixing frame, one side of the second fixing frame is fixedly connected to one side of the moving plate, one side of the second fixing frame is fixedly connected with an electromagnet, and the electromagnet and the magnetic rod are mutually attracted after power is turned on.

[0024] As a further description of a single-stage centrifugal water pump of the above technology:

[0025] The limiting groove also includes a second parallel section, the second parallel section is connected to one end of the second oblique section, the height of the second oblique section is higher than the second parallel section, and the height of the second parallel section is higher than the first oblique section.

[0026] In summary, due to the adoption of the above-mentioned technology for a single-stage centrifugal water pump, the beneficial effects of the present invention are:

[0027] 1. By providing a reversing mechanism and a connecting mechanism, when it is necessary to fill the pump casing with water in front of the water pump, the reversing mechanism can be driven to connect with the connecting mechanism at one end of the cam, so that the cam rotates, the cam drives the connecting rod to rotate, and the connecting rod drives the piston to reciprocate up and down inside the sealed tube. When the piston moves upward, the water inlet check valve is opened to allow water to enter the sealed tube. When the piston moves downward, the water discharge check valve is opened to transport water to the water filling pipe. Water enters the pump casing through the water filling pipe to complete the water filling operation. At this time, the magnetic rod at the coupling is located in the connecting hole inside the second turntable here, which can avoid the problem of idling of the impeller during the water filling operation. When the pump is working, the reversing mechanism is driven to connect with the connecting mechanism at one end of the coupling, so that the coupling rotates and drives the impeller to rotate. At this time, the magnetic rod at the cam is located in the connecting hole inside the second turntable here, which can limit the cam, avoiding vibration during the operation of the pump, causing the cam to drive the piston to move, so that water is discharged from the sealed tube, thereby causing the problem of water outflow.

[0028] 2. By providing an electromagnet, when the pump is installed on an uneven ground, the connecting plate rotates through the first counterweight according to the change of the inclination angle. At this time, the electromagnet can be used to adsorb the magnetic rod, and the magnetic rod drives the limit slot to move. The limit slot pushes the pulley to move, and the pulley drives the limit rod to disengage from the tooth groove. At this time, the second turntable can be released from the limit, and the second turntable drives the magnetic rod to rotate through the second counterweight, and the magnetic rod drives the first turntable to rotate following the inclination angle. At this time, the positions of the connecting rod and the connecting hole correspond, so the limit of the first turntable can be canceled and the first turntable can be connected for operation. In the case of tilt, the coupling or cam can be automatically connected and the limit of the coupling or cam can be released.

[0029] 3. By providing a second parallel section, when the magnetic rod is reset, the roller slides from the second inclined section to the second parallel section, and when the roller is in the second parallel section, the limit rod and the tooth groove cooperate to limit the slider, thereby preventing the second turntable from rotating. When the electromagnet forgets to be turned off, the roller is always inside the second parallel section, so as to keep the second turntable limited, thereby preventing the second turntable from being unable to be limited, causing the cam or the coupling to rotate, causing the impeller to run idle or the piston to move inside the sealing tube, thereby causing the impeller to have a reduced service life or water to be discharged from the sealing tube. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 Shows a schematic diagram of the overall structure according to the present invention;

[0031] Figure 2 A partial cross-sectional view of the overall structure according to the present invention is shown;

[0032] Figure 3 A partial structural schematic diagram of a reversing mechanism and a connecting mechanism according to the present invention is shown;

[0033] Figure 4 It shows a schematic structural diagram of a reversing mechanism according to the present invention;

[0034] Figure 5 It shows a schematic structural diagram of a sealing tube and a connecting mechanism according to the present invention;

[0035] Figure 6 It shows a schematic structural diagram of the connecting mechanism according to the present invention;

[0036] Figure 7 A partial structural cross-sectional view of a connecting mechanism according to the present invention is shown;

[0037] Figure 8 Shows a structural exploded view of the connecting mechanism according to the present invention;

[0038] Fig. 9 It shows a schematic structural diagram of a second fixing frame according to the present invention;

[0039] Fig.10 A schematic diagram showing the structure of a slider and a second rotating disk according to the present invention is shown;

[0040] Fig.11 A schematic diagram showing the structure of a slider and a magnetic rod according to the present invention is shown;

[0041] Fig.12 A schematic structural diagram of the limiting groove according to the present invention is shown.

[0042] Legend:

[0043] 1. Fixed plate; 2. Pump housing; 21. Water inlet; 22. Motor; 23. Coupling; 3. Sealing tube; 31. Water inlet check valve; 32. Drain check valve; 33. Water inlet pipe; 34. Piston; 35. Connecting rod; 36. Cam; 4. Screw; 41. First bevel gear; 42. Second bevel gear; 43. Moving plate; 44. Sliding rod; 45. Connecting plate; 451. Connecting rod; 452. First counterweight; 46. Positioning rod; 5. Rotating rod; 511. First A turntable; 512, a connecting hole; 52, a first fixed frame; 521, a tooth groove; 522, a fixed rod; 523, a slider; 524, a limiting rod; 525, a roller; 53, a second fixed frame; 531, an electromagnet; 54, a second turntable; 541, a magnetic rod; 542, a second counterweight; 543, a limiting groove; 5431, a first oblique section; 5432, a first parallel section; 5433, a second oblique section; 5434, a second parallel section; 544, a spring. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technology of a single-stage centrifugal water pump in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0045] like Figure 1-Figure 12 As shown, the present invention provides: a single-stage centrifugal water pump, including a fixed plate 1, a pump casing 2 is fixedly connected to the fixed plate 1, a water inlet 21 is provided on the pump casing 2, a water inlet 21 is fixedly connected to a water inlet pipe 33 inside the water inlet 21, one end of the water inlet pipe 33 is fixedly connected to a drainage check valve 32, one end of the drainage check valve 32 is fixedly connected to a sealing tube 3, the sealing tube 3 is fixedly connected to the top of the fixed plate 1, a piston 34 is slidably connected to the inside of the sealing tube 3, one end of the piston 34 is rotatably connected to a connecting rod 35, one end of the connecting rod 35 is rotatably connected to a cam 36, the outer wall of the sealing tube 3 is fixedly connected to the water inlet check valve 31, the inside of the pump casing 2 is rotatably connected to a coupling 23 , the cam 36 and the coupling 23 are both provided with a connecting mechanism, the connecting mechanism includes a first rotating disk 511 which is rotatably connected to the cam 36 and the coupling 23 respectively, the first rotating disk 511 is provided with a connecting hole 512, the connecting hole 512 is slidably connected with a magnetic rod 541, the fixed plate 1 is provided with a reversing mechanism, the reversing mechanism includes a moving plate 43 which is slidably connected to the fixed plate, and a connecting rod 451 is provided at one end of the moving plate 43; when it is necessary to add water to the pump casing 2 before the pump is used, the reversing mechanism can be connected to the connecting mechanism at one end of the cam 36, and when it is necessary to use the pump to pump water, the reversing mechanism can be connected to the connecting mechanism at one end of the coupling 23;

[0046] like Figure 5 As shown, the two first turntables 511 are both fixedly connected with a turn rod 5 inside, one end of one of the turn rods 5 is fixedly connected to the inside of the cam 36, and one end of the other turn rod 5 is fixedly connected to one end of the coupling 23, and the turn rod 5 is rotatably connected to the inside of the first fixed frame 52 through a bearing.

[0047] Specifically, before using the single-stage centrifugal water pump, the medium to be transported needs to be added into the pump housing 2 so that the medium fills the entire pump cavity to exclude the air in the pump cavity. In this way, when the pump is officially running, there will be no gas in the water pump, creating conditions for the stable operation of the water pump.

[0048] When the existing single-stage centrifugal water pump is filling the pump housing 2 with water, the output end of the motor 22 is generally connected to the water filling pump assembly through a reversing mechanism, and the water filling pump assembly then performs a medium conveying operation to the inside of the pump housing 2. When the inside of the pump housing 2 is filled with the medium, the output end of the motor 22 is connected to the coupling 23 through the reversing mechanism, so that the impeller can work, and the impeller can now rotate to perform the conveying operation;

[0049] When the above-mentioned prior art is used, the pump generates severe vibrations during operation. Therefore, when the motor 22 switches from the water pump assembly to the impeller assembly through the reversing mechanism, the water pump assembly is affected by the vibrations and moves, causing water to flow back and be discharged from the water pump, thereby affecting the normal delivery operation of the pump.

[0050] In order to solve the above problems, the working principle of the present invention is as follows: when the pump casing 2 needs to be filled with water before the pump is used, the movable plate 43 can be driven to drive the connecting rod 451 to move toward the sealing tube 3, and the connecting rod 451 moves to the first rotating disk 511, and then the connecting rod 451 enters the connecting hole 512, and then the magnetic rod 541 is squeezed out of the connecting hole 512. At this time, the magnetic rod 541 releases the limit on the first rotating disk 511, and the magnetic rod 541 at the position of the coupling 23 enters the corresponding connecting hole 512 inside the first rotating disk 511 to fix the impeller, and then the connecting rod 451 is driven to move to the sealing tube 3. The connecting rod 451 rotates, and the connecting rod 451 drives the first rotating disk 511 to rotate through the connecting hole 512, and the first rotating disk 511 drives the rotating rod 5 to rotate, and the rotating rod 5 drives the cam 36 to rotate, and the cam 36 drives the connecting rod 35 to rotate, and the connecting rod 35 drives the piston 34 to reciprocate up and down inside the sealing tube 3. When the piston 34 moves upward, the water inlet check valve 31 opens, and the water flows into the inside of the sealing tube 3. When the piston 34 moves downward, the water flows into the inside of the water filling pipe 33 through the water discharge check valve 32, and then the water flows into the water filling port 21 through the water filling pipe 33, and finally flows into the pump housing 2 to complete the water filling operation;

[0051] When the pump is needed to perform water delivery operation, the driving movable plate 43 drives the connecting rod 451 to move in the direction of the coupling 23, and the connecting rod 451 enters the connecting hole 512 inside the first turntable 511 here. At this time, the magnetic rod 541 at the cam 36 enters the corresponding connecting hole 512 inside the first turntable 511, and the magnetic rod 541 can limit the cam 36, drive the connecting rod 451 to rotate, the connecting rod 451 drives the first turntable 511 to rotate, the first turntable 511 drives the rotating rod 5 to rotate, the rotating rod 5 drives the coupling 23 to rotate, and the coupling 23 can drive the impeller inside the pump casing 2 to perform water delivery operation.

[0052] The present invention is provided with a magnetic rod 541, which can limit the first turntable 511 to prevent the first turntable 511 from rotating due to vibration, causing the coupling 23 or the cam 36 to rotate, so that the coupling 23 drives the impeller to rotate idly, which increases the wear of the impeller and causes the service life of the impeller to be reduced, or the cam 36 drives the piston 34 to move inside the sealing tube 3, causing the water inlet check valve 31 or the water discharge check valve 32 to open, so that the water flow filling pipe 33 flows back and is discharged from the sealing tube 3, causing the water delivery to leak sideways.

[0053] like Figures 2 to 4 As shown, the internal thread of the movable plate 43 is connected to a screw rod 4, and the screw rod 4 is rotatably connected to the top of the fixed plate 1. The screw rod 4 is rotatably connected to a first bevel gear 41, and one side of the first bevel gear 41 is meshingly connected to a second bevel gear 42, and the second bevel gear 42 is rotatably connected to the top of the fixed plate 1. The internal sliding connection of the movable plate 43 is a positioning rod 46, and the positioning rod 46 is fixedly connected to the fixed plate 1.

[0054] Specifically, when it is necessary to drive the movable plate 43 to move, the second bevel gear 42 can be rotated, and the second bevel gear 42 and the first bevel gear 41 are meshed, so that the first bevel gear 41 rotates, and the first bevel gear 41 drives the screw rod 4 to rotate. The screw rod 4 and the movable plate 43 are threadedly connected, so that the movable plate 43 slides on the positioning rod 46, and the movable plate 43 can drive the connecting rod 451 to enter the connecting hole 512 at the corresponding position, thereby realizing the reversing connection operation.

[0055] like Figure 2 and Figure 4 As shown, one end of the connecting rod 451 is fixedly connected to a connecting disk 45, the interior of the connecting disk 45 is fixedly connected to a first counterweight block 452, one end of the connecting disk 45 is rotatably connected to a sliding rod 44, the sliding rod 44 is rotatably connected to the interior of a movable plate 43, the fixed plate 1 is fixedly connected to a motor 22, one end of the sliding rod 44 is slidably connected to the interior of an output end of the motor 22, and the shape of the sliding rod 44 is set to be T-shaped.

[0056] Specifically, when it is necessary to drive the connecting rod 451 to rotate, the motor 22 is turned on, the motor 22 drives the sliding rod 44 inside its output end to rotate, the sliding rod 44 drives the connecting disk 45 to rotate, the connecting disk 45 drives the connecting rod 451 to rotate, the connecting rod 451 can drive the first rotating disk 511 to rotate, the first rotating disk 511 can drive the rotating rod 5 to rotate, and the cam 36 or the coupling 23 can be rotated. When use is completed, the motor 22 is turned off, and the connecting disk 45 is driven to rotate by the first counterweight block 452, so that the connecting disk 45 is affected by the center of gravity of the first counterweight block 452, so that one end of the first counterweight block 452 is always at the bottom.

[0057] like Figure 5 , Figure 6 and Figure 8 As shown, the magnetic rod 541 is slidably connected to a second turntable 54 , one end of the second turntable 54 is rotatably connected to a first fixed frame 52 , the first fixed frame 52 is fixedly connected to the sealing tube 3 , and the second turntable 54 is internally fixedly connected to a second counterweight 542 .

[0058] Specifically, when the fixed plate 1 is installed on a horizontal surface, the second turntable 54 is affected by the center of gravity of the second counterweight block 542, so that one end of the second counterweight block 542 is always at the bottom. Therefore, the second turntable 54 drives the magnetic rod 541 to rotate, and the magnetic rod 541 drives the first turntable 511 to rotate, so that the magnetic rod 541, the connecting hole 512 and the connecting rod 451 are always in the same position, and the connecting rod 451 can be automatically positioned and connected with the connecting hole 512. After use, the magnetic rod 541 can automatically limit the connection of the connecting hole 512.

[0059] like Figures 6 to 12 As shown, the upper surface of the sealing tube 3 is slidably connected with a second fixing frame 53, one side of the second fixing frame 53 is fixedly connected to one side of the moving plate 43, one side of the second fixing frame 53 is fixedly connected with an electromagnet 531, and after power is turned on, the electromagnet 531 and the magnetic rod 541 are mutually attracted, and the first fixing frame 52 is provided with a plurality of tooth grooves 521 inside, and a fixing rod 522 is provided on one side of the tooth groove 521, and the fixing rod 522 is fixedly connected to the inside of the first fixing frame 52, and a slider 52 is slidably connected to the fixing rod 522. 3. The slider 523 is internally slidably connected to a limit rod 524, and a roller 525 is rotatably connected to the limit rod 524. A spring 544 is fixedly connected between the magnetic rod 541 and the second turntable 54. A limit groove 543 is provided at one end of the magnetic rod 541. The inner wall of the limit groove 543 is slidably connected to the roller 525. The limit groove 543 includes a first oblique section 5431, and a first parallel section 5432 is provided at one end of the first oblique section 5431, and a second oblique section 5433 is provided at one end of the first parallel section 5432.

[0060] Specifically, when the plane on which the pump is installed is uneven, the connecting disk 45 will rotate according to the first counterweight 452. Under normal conditions, the second rotating disk 54 is limited by the limiting rod 524 and the tooth groove 521, so that the second rotating disk 54 remains fixed on the first fixing frame 52. Therefore, the second rotating disk 54 limits the magnetic rod 541, and the magnetic rod 541 limits the first rotating disk 511. Therefore, the magnetic rod 541 limits the first rotating disk 511 and the second rotating disk 54, so that the second rotating disk 54 cannot drive the first rotating disk 511 to rotate automatically, so that the positions of the connecting hole 512 and the connecting rod 451 cannot correspond to each other, thereby causing the problem that the connecting rod 451 cannot be automatically connected to the connecting hole 512.

[0061] In order to solve the above problem, when the movable plate 43 moves, it drives the second fixing frame 53 to move synchronously, so that the second fixing frame 53 drives the electromagnet 531 to move synchronously. At this time, one side of the electromagnet 531 is away from one end of the magnetic rod 541, so that the magnetic rod 541 is released from the limit and can slide to one side of the electromagnet 531. Then, the electromagnet 531 is turned on, and the electromagnet 531 generates a magnetic force to adsorb the magnetic rod 541, so that the magnetic rod 541 stretches the spring 544 and is inside the second rotating disk 54. The magnetic rod 541 slides toward the electromagnet 531, and one end of the magnetic rod 541 is still inside the connecting hole 512, and drives the limiting groove 543 to slide synchronously, so that the roller 525 slides from the first inclined section 5431 of the limiting groove 543 to the interface between the first inclined section 5431 and the first parallel section 5432. At this time, the roller 525 drives the limiting rod 524 to move toward the inside of the slider 523, and the limiting rod 524 is separated from the inside of the tooth groove 521, so that the limiting of the magnetic rod 541 can be released. The second rotating disk 54 can rotate. At this time, the second counterweight block 542 drives the second rotating disk 54 to rotate, so that the second rotating disk 54 drives the magnetic rod 541 to rotate synchronously. The magnetic rod 541 drives the first rotating disk 511 to rotate to the position corresponding to the connecting rod 451, and then drives the connecting rod 451 to move into the connecting hole 512. The connecting rod 451 squeezes the magnetic rod 541, so that the magnetic rod 541 continues to stretch the spring 544. At this time, the roller 525 is inside the first parallel section 5432. When the roller 525 slides from the first parallel section 5432 to the end of the second inclined section 5433, the magnetic rod 541 is completely separated from the interior of the connecting hole 512, and at the same time, the limiting rod 524 is reset and meshed with the tooth groove 521, so that the magnetic rod 541 limits the second turntable 54, so that the second turntable 54 is fixed here. After use, the connecting rod 451 is separated from the connecting hole 512, and the magnetic rod 541 enters the connecting hole 512 to complete the limiting operation of the first turntable 511.

[0062] The present invention can facilitate the subsequent docking effect by releasing the limit on the second turntable 54 through the magnetic rod 541 and realizing automatic angle change when the pump is installed in an inclined position. At the same time, the magnetic rod 541 changes the angle of the second turntable 54 and then completes the fixed limit on the second turntable 54, thereby preventing the second turntable 54 from driving the magnetic rod 541 to move to a different position, causing the subsequent magnetic rod 541 and the connecting hole 512 to deviate from the initial position during docking, so that the internal position of the piston 34 in the sealing tube 3 changes, causing the water inlet check valve 31 or the water discharge check valve 32 to open, thereby causing the water flow inside the pump to leak from the inside of the sealing tube 3.

[0063] like Fig.12 As shown, the limiting groove 543 also includes a second parallel section 5434, the second parallel section 5434 is connected to one end of the second oblique section 5433, the height of the second oblique section 5433 is higher than the second parallel section 5434, and the height of the second parallel section 5434 is higher than the first oblique section 5431.

[0064] Specifically, when the user drives the magnetic rod 541 to reset, the roller 525 slides inside the limit groove 543 to reset, and the roller 525 slides at the first parallel section 5432. At this time, the limit rod 524 disengages from the tooth groove 521, so the second turntable 54 will drive the first turntable 511 to rotate through the magnetic rod 541, causing the cam 36 or the coupling 23 to rotate, so that the internal position of the piston 34 in the sealing tube 3 changes, thereby causing the drainage check valve 31 or the water inlet check valve 32 to open.

[0065] In order to avoid the above problems, when the magnetic rod 541 is reset, the roller 525 will fall into the second parallel section 5434. Since the height of the second inclined section 5433 is higher than that of the second parallel section 5434, the roller 525 will slide in the second parallel section 5434 when it is reset, and the roller 525 will keep moving inside the second parallel section 5434, and the limiting rod 524 will remain inside the tooth groove 521, so that the magnetic rod 541 limits the second turntable 54. When the electromagnet 531 contacts one end of the magnetic rod 541, the electromagnet 531 limits the magnetic rod 541, and the roller 525 slides from the second parallel section 5434 to the inside of the first inclined section 5431. Since the height of the second parallel section 5434 is higher than that of the first inclined section 5431, the roller 525 will slide in the first inclined section 5431.

[0066] The present invention provides a second parallel section 5434 in the limiting groove 543 to prevent the limiting rod 524 from disengaging from the tooth groove 521 when the magnetic rod 541 is reset, resulting in the first rotating disk 511 being unable to be limited, thereby causing the cam 36 or the coupling 23 to rotate.

[0067] Working principle: when the pump needs to be filled with water inside the pump casing 2 before use, the second bevel gear 42 can be rotated, and the second bevel gear 42 and the first bevel gear 41 are meshed, so that the first bevel gear 41 rotates, and the first bevel gear 41 drives the screw rod 4 to rotate, and the screw rod 4 and the movable plate 43 are threadedly connected, so that the movable plate 43 slides on the positioning rod 46, and at the same time, the movable plate 43 drives the sliding rod 44 to slide inside the output end of the motor 22, and the movable plate 43 drives the connecting plate 45 to move, and at the same time, the movable plate 43 drives the second fixed frame 53 to move synchronously when the movable plate 43 moves, so that the second fixed frame 53 drives the electromagnet 531 to move synchronously, and at this time, one side of the electromagnet 531 is away from one end of the magnetic rod 541, so that one end of the magnetic rod 541 is released from the limit, and the connecting plate 45 drives the connecting rod 451 to move toward the sealing tube 3;

[0068] When the fixing plate 1 is installed on a horizontal surface, the first counterweight 452 drives the connecting plate 45 to rotate, so that the connecting plate 45 is affected by the center of gravity of the first counterweight 452, so that one end of the first counterweight 452 is always at the bottom, and the second rotating disk 54 is affected by the center of gravity of the second counterweight 542, so that one end of the second counterweight 542 is always at the bottom, so that the magnetic rod 541, the connecting hole 512 and the connecting rod 451 are always in the same position;

[0069] The connecting rod 451 moves to the first rotating disk 511, and then the connecting rod 451 enters the connecting hole 512, and then the magnetic rod 541 is squeezed out of the connecting hole 512. At this time, the magnetic rod 541 releases the limit of the first rotating disk 511, and the magnetic rod 541 at the position of the coupling 23 enters the corresponding connecting hole 512 inside the first rotating disk 511 to fix the impeller, and then the motor 22 is turned on to work, and the motor 22 drives the sliding rod 44 inside its output end to rotate, the sliding rod 44 drives the connecting disk 45 to rotate, and the connecting disk 45 drives the connecting rod 451 to rotate, and the connecting The rod 451 can drive the first rotating disk 511 to rotate, the first rotating disk 511 can drive the rotating rod 5 to rotate, the rotating rod 5 drives the cam 36 to rotate, the cam 36 drives the connecting rod 35 to rotate, the connecting rod 35 drives the piston 34 to reciprocate up and down inside the sealing tube 3, when the piston 34 moves upward, the water inlet check valve 31 opens, and the water flows into the inside of the sealing tube 3, when the piston 34 moves downward, the water flows into the inside of the water filling pipe 33 through the water discharge check valve 32, and then the water flows into the water filling port 21 through the water filling pipe 33, and finally flows into the pump housing 2 to complete the water filling operation;

[0070] When the pump is needed to carry out water delivery operation, the driving movable plate 43 drives the connecting rod 451 to move in the direction of the coupling 23, and the connecting rod 451 enters the connecting hole 512 inside the first rotating disk 511 here. At this time, the magnetic rod 541 at the cam 36 enters the connecting hole 512 inside the first rotating disk 511 at its corresponding position, and the magnetic rod 541 can limit the cam 36, drive the connecting rod 451 to rotate, the connecting rod 451 drives the first rotating disk 511 to rotate, the first rotating disk 511 drives the rotating rod 5 to rotate, the rotating rod 5 drives the coupling 23 to rotate, and the coupling 23 can drive the impeller inside the pump housing 2 to carry out water delivery operation, and at the same time, the electromagnet 531 contacts one end of the magnetic rod 541, and the electromagnet 531 limits the magnetic rod 541 to prevent the magnetic rod 541 from falling off due to vibration;

[0071] When the surface on which the pump is installed is uneven, the electromagnet 531 can be turned on first. The electromagnet 531 generates a magnetic force to adsorb the magnetic rod 541, so that the magnetic rod 541 stretches the spring 544 and slides inside the second rotary disk 54. The magnetic rod 541 slides toward the electromagnet 531. One end of the magnetic rod 541 is still inside the connecting hole 512, and drives the limiting groove 543 to slide synchronously, so that the roller 525 slides from the first inclined section 5431 of the limiting groove 543 to the interface between the first inclined section 5431 and the first parallel section 5432. At this time, the roller 525 drives the limiting rod 524 to move toward the inside of the slider 523, and the limiting rod 524 is separated from the inside of the tooth groove 521, so that the limiting of the magnetic rod 541 can be released, so that the second rotary disk 54 can rotate. At this time, the second counterweight block 542 drives the second rotary disk 54 to rotate, so that the second rotary disk 54 drives The magnetic rod 541 rotates synchronously, and the magnetic rod 541 drives the first rotating disk 511 to rotate to a position corresponding to the position of the connecting rod 451, and then drives the connecting rod 451 to move into the connecting hole 512. The connecting rod 451 squeezes the magnetic rod 541, so that the magnetic rod 541 continues to stretch the spring 544. At this time, the roller 525 slides inside the first parallel section 5432. When the roller 525 slides from the first parallel section 5432 to the end of the second oblique section 5433, the magnetic rod 541 is completely separated from the inside of the connecting hole 512. At the same time, the limiting rod 524 is reset and meshed with the tooth groove 521, so that the magnetic rod 541 limits the second rotating disk 54, so that the second rotating disk 54 is fixed there. After use, the connecting rod 451 is separated from the connecting hole 512, and the magnetic rod 541 enters the connecting hole 512 to complete the limiting operation of the first rotating disk 511.

[0072] When the magnetic rod 541 is reset, the roller 525 will fall into the second parallel section 5434. Since the height of the second inclined section 5433 is higher than that of the second parallel section 5434, the roller 525 will slide in the second parallel section 5434 when it is reset, and the roller 525 will keep moving inside the second parallel section 5434. The limiting rod 524 will remain inside the tooth groove 521, so that the magnetic rod 541 will limit the second turntable 54. When the electromagnet 531 contacts one end of the magnetic rod 541, the electromagnet 531 will limit the magnetic rod 541, and the roller 525 will slide from the second parallel section 5434 to the first inclined section 5431. Since the height of the second parallel section 5434 is higher than that of the first inclined section 5431, the roller 525 will slide in the first inclined section 5431.

[0073] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field within the technical scope disclosed by the present invention, according to the technology of the present invention a single-stage centrifugal water pump and its inventive concept, make equivalent replacement or change, should be covered within the protection scope of the present invention.

Claims

1. A single-stage centrifugal water pump, comprising a fixed plate (1), a pump housing (2) fixedly connected to the fixed plate (1), a water inlet (21) provided on the pump housing (2), a water inlet (21) fixedly connected to a water inlet pipe (33) inside the water inlet, one end of the water inlet pipe (33) fixedly connected to a drainage check valve (32), one end of the drainage check valve (32) fixedly connected to a sealing tube (3), the sealing tube (3) and the upper part of the fixed plate (1) fixedly connected, a piston (34) slidably connected inside the sealing tube (3), one end of the piston (34) rotatably connected to a connecting rod (35), one end of the connecting rod (35) rotatably connected to a cam (36), an outer wall of the sealing tube (3) fixedly connected to a water inlet check valve (31), the interior of the pump housing (2) rotatably connected to a coupling (23), characterized in that: The cam (36) and the coupling shaft (23) are both provided with a connecting mechanism, the connecting mechanism comprising a first rotating disk (511) rotatably connected to the cam (36) and the coupling shaft (23), respectively, the first rotating disk (511) being provided with a connecting hole (512), the interior of the connecting hole (512) being slidably connected with a magnetic rod (541), and the fixed plate (1) being provided with a reversing mechanism; The reversing mechanism comprises a movable plate (43) slidably connected to a fixed plate, and a connecting rod (451) is provided at one end of the movable plate (43); when water needs to be added to the inside of the pump casing (2) before the pump is used, the reversing mechanism can be connected to the connecting mechanism at one end of the cam (36); when the pump needs to be used to pump water, the reversing mechanism can be connected to the connecting mechanism at one end of the coupling shaft (23).

2. A single-stage centrifugal water pump according to claim 1, characterized in that: The movable plate (43) is internally threadedly connected to a screw rod (4), the screw rod (4) is rotatably connected to the upper portion of the fixed plate (1), the screw rod (4) is rotatably connected to a first bevel gear (41), one side of the first bevel gear (41) is meshingly connected to a second bevel gear (42), the second bevel gear (42) is rotatably connected to the upper portion of the fixed plate (1), the movable plate (43) is internally slidably connected to a positioning rod (46), the positioning rod (46) is fixedly connected to the fixed plate (1).

3. A single-stage centrifugal water pump according to claim 1, characterized in that: One end of the connecting rod (451) is fixedly connected to a connecting disk (45), the interior of the connecting disk (45) is fixedly connected to a first counterweight (452), one end of the connecting disk (45) is rotatably connected to a sliding rod (44), and the sliding rod (44) and the interior of the movable plate (43) are rotatably connected via a bearing.

4. A single-stage centrifugal water pump according to claim 3, characterized in that: The fixed plate (1) is fixedly connected to a motor (22), one end of the slide bar (44) is slidably connected to the inside of the output end of the motor (22), and the shape of the slide bar (44) is set to be T-shaped.

5. A single-stage centrifugal water pump according to claim 4, characterized in that: A second rotating disk (54) is slidably connected to the magnetic rod (541), one end of the second rotating disk (54) is rotatably connected to a first fixed frame (52), the first fixed frame (52) is fixedly connected to the sealing tube (3), and a second counterweight (542) is fixedly connected inside the second rotating disk (54).

6. A single-stage centrifugal water pump according to claim 5, characterized in that: The two first rotating disks (511) are both fixedly connected with rotating rods (5), one end of one of the rotating rods (5) is fixedly connected to the inside of the cam (36), one end of the other rotating rod (5) is fixedly connected to one end of the coupling shaft (23), and the rotating rod (5) is rotatably connected to the inside of the first fixed frame (52).

7. A single-stage centrifugal water pump according to claim 6, characterized in that: A plurality of tooth grooves (521) are arranged inside the first fixing frame (52), a fixing rod (522) is arranged on one side of the tooth groove (521), the fixing rod (522) is fixedly connected to the inside of the first fixing frame (52), a sliding block (523) is slidably connected to the fixing rod (522), and a limiting rod (524) is slidably connected to the inside of the sliding block (523).

8. A single-stage centrifugal water pump according to claim 7, characterized in that: The limiting rod (524) is rotatably connected to a roller (525); a spring (544) is fixedly connected between the magnetic rod (541) and the second rotating disk (54); a limiting groove (543) is provided at one end of the magnetic rod (541); an inner wall of the limiting groove (543) is slidably connected to the roller (525); the limiting groove (543) comprises a first oblique section (5431); a first parallel section (5432) is provided at one end of the first oblique section (5431); and a second oblique section (5433) is provided at one end of the first parallel section (5432).

9. A single-stage centrifugal water pump according to claim 8, characterized in that: A second fixing frame (53) is slidably connected to the upper surface of the sealing tube (3); one side of the second fixing frame (53) is fixedly connected to one side of the movable plate (43); one side of the second fixing frame (53) is fixedly connected to an electromagnet (531); and when power is supplied, the electromagnet (531) and the magnetic rod (541) are attracted to each other.

10. A single-stage centrifugal water pump according to claim 9, characterized in that: The limiting groove (543) also includes a second parallel section (5434), the second parallel section (5434) is connected to one end of the second oblique section (5433), the height of the second oblique section (5433) is higher than the second parallel section (5434), and the height of the second parallel section (5434) is higher than the first oblique section (5431).

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