A pressurized anti-backflow type water pump

Abstract

The present invention relates to the field of water pumps, and specifically to a pressurized anti-backflow water pump, which includes a housing. A water inlet pipe is fixedly installed in the middle of the left side of the housing, and a water outlet pipe is fixedly installed on the upper part of the rear end of the housing. A driving motor is fixedly installed on the right side of the housing, and a driving shaft is movably installed on the left side of the driving motor; a power mechanism is fixedly sleeved on the outer side of the driving shaft, a transmission connecting rod group is movably installed at the lower end of the power mechanism, and a sealing mechanism is movably installed on the left side of the transmission connecting rod group; the power mechanism includes a rotating base, the rotating base is fixedly sleeved on the outer surface of the driving shaft, a chute is evenly opened on one side of the rotating base close to the driving motor, and a first return spring is fixedly installed at one end of the chute away from the driving shaft. The power mechanism does not require an additional external circuit to be installed. At the same time, the sealing mechanism will not obstruct the water flow when the water pump is working, and can ensure that the water flow is in the maximum state. When the water pump stops working, it can prevent the water from flowing back for the next use.

Description

Technical Field

[0001] The present invention relates to the field of water pumps, and specifically to a pressurized anti-backflow water pump. Background Technique

[0002] A water pump is a machine that transports liquids or pressurizes liquids. It transfers 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.;

[0003] 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 pumps and vane pumps. A positive displacement pump uses the change in the volume of its working chamber to transfer energy; a vane pump uses the interaction between the rotating vane and water to transfer energy, and there are types such as centrifugal pumps, axial flow pumps, and mixed flow pumps;

[0004] When the existing pressurized pump stops working, the internal pressure disappears and the water flow will flow back. When it is used next time, it is necessary to first add water into the pipeline to fill the inside of the water pump with water, which makes the work time-consuming and laborious;

[0005] Therefore, a pressurized anti-backflow water pump is proposed. Summary of the Invention

[0006] The purpose of the present invention is to provide a pressurized anti-backflow water pump. This device can prevent the water flow from flowing back when the water pump stops working, and the sealing mechanism will not block the water flow when the water pump is working, and will not affect the flow rate and head of the water pump, making the use of the water pump more convenient, more efficient, so as to solve the problems raised in the above background technique.

[0007] To achieve the above object, the present invention provides the following technical solution: A pressurized anti-backflow water pump, including a housing. A water inlet pipe is fixedly installed in the middle of the left side of the housing, a water outlet pipe is fixedly installed on the upper part of the rear end of the housing, a drive motor is fixedly installed on the right side of the housing, and a drive shaft is movably installed on the left side of the drive motor; A power mechanism is fixedly sleeved outside the drive shaft, a transmission connecting rod group is movably installed at the lower end of the power mechanism, and a sealing mechanism is movably installed on the left side of the transmission connecting rod group; The power mechanism does not require an additional external circuit, and can prevent the water in the water pump from flowing back when the water pump stops working. At the same time, the sealing mechanism will not hinder the water flow when the water pump is working, and can ensure that the water flow is in the maximum state.

[0008] Preferably, the power mechanism includes a rotating base fixedly sleeved on the outer surface of the drive shaft. The rotating base is evenly provided with sliding grooves on the side close to the drive motor. One end of each sliding groove away from the drive shaft is fixedly installed with a first return spring. The rotating base is evenly and movably installed with sliding plates on the side close to the drive motor. In the middle of the surface of each sliding plate close to the rotating base, a slider is fixedly installed.

[0009] Preferably, the sliding grooves are T-shaped grooves, and the sliders are T-shaped blocks. The elastic force of the first return spring is less than the sum of the centrifugal forces generated when the sliding plates and the sliders rotate driven by the drive motor, and the elastic force of the first return spring is greater than the self-weight of the sliding plates and the sliders. The sliders can only move along the direction of the sliding grooves in the sliding grooves.

[0010] Preferably, the transmission link group includes a push rod movably installed at the lower end of the sliding plate. On both sides of the central axis of the push rod, limiting grooves are symmetrically opened. A second return spring is movably installed inside the limiting grooves. The lower end of the push rod is symmetrically and movably installed with transmission rods. On the side of the two transmission rods away from the push rod, a pull rod is jointly and movably installed.

[0011] Preferably, the push rod and the two transmission rods are connected by a shaft, and the three are movably installed on the same shaft. The two transmission rods and the pull rod are connected by a shaft. The two transmission rods and the pull rod are movably connected by two short shafts. The side of the pull rod close to the push rod is designed with a groove, and the length of the middle gap is greater than the width of the push rod.

[0012] Preferably, the diameter of the water inlet pipe of the water pump is 32 cm. The displacement distance when the sliding plate rotates is 32 cm, and the length of the transmission rod is 32 cm.

[0013] Preferably, the sealing mechanism includes a sealing baffle movably installed on the left side of the pull rod. A protective cover is fixedly installed on the outside of the sealing baffle. A sealing ring is fixedly installed on the inner surface of the protective cover. The sealing ring is closely combined with the sealing baffle. On the right side of the sealing baffle, third return springs are evenly fixedly installed. A limiting rod is fixedly installed on the upper surface of the protective cover. A limiting hole is opened at the right end of the upper surface of the limiting rod.

[0014] Preferably, the pull rod penetrates through the protective cover. Under the elastic forces of the third return spring and the second return spring, the transmission rods can maintain a horizontal state when the water pump is not working. Under the elastic forces of the third return spring and the second return spring, the push rod can overcome its own gravity and always be at the highest point when the water pump is not working.

[0015] Preferably, the upper surface of the push rod is arc-shaped.

[0016] Preferably, all components of this device are coated with more waterproof coatings compared with existing water pumps.

[0017] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0018] 1. When the water pump stops working, it can block the water flow to prevent the water from flowing back into the container. When the water pump is working, the sealing mechanism will not block the water flow and will not affect the flow rate of the water pump, making the use of the water pump more convenient and the device does not require an external power source;

[0019] 2. The power of the power mechanism of the water pump comes from the driving motor of the water pump itself. The contact surfaces of the power mechanism and the push rod are both designed in an arc shape, greatly reducing wear and improving the service performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a front view of the present invention;

[0022] Figure 3 is a structural diagram of the limiting plate of the present invention;

[0023] Figure 4 is a schematic structural diagram of the transmission link group of the present invention;

[0024] Figure 5 is a schematic structural diagram of the push rod of the present invention;

[0025] Figure 6 is a schematic structural diagram of the power mechanism of the present invention;

[0026] Figure 7 is a schematic structural diagram of the power mechanism of the present invention;

[0027] Figure 8 is Figure 2 an enlarged view of A in

[0028] Figure 9 a positional relationship diagram of the link transmission group when the water pump is working.

[0029] In the figure: 1. Outer shell; 2. Water inlet pipe; 3. Water outlet pipe; 4. Driving motor; 41. Driving shaft; 5. Power mechanism; 51. Rotating base; 52. Chute; 53. First return spring; 54. Sliding plate; 55. Slide block; 6. Transmission link group; 61. Push rod; 62. Transmission rod; 63. Pull rod; 64. Limiting groove; 65. Second return spring; 7. Sealing mechanism; 71. Sealing baffle; 72. Protective cover; 73. Sealing ring; 74. Limiting rod; 75. Limiting hole; 76. Third return spring. DETAILED DESCRIPTION OF THE INVENTION

[0030] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0032] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless otherwise specifically defined. In addition, the terms "mounted", "connected", and "connected" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] Please refer to Figures 1 to 9 , the present invention provides a technical solution:

[0034] A pressure-resistant anti-backflow type water pump, as Figure 1 shown, includes a housing 1. A water inlet pipe 2 is fixedly installed in the middle of the left side of the housing 1. A water outlet pipe 3 is fixedly installed on the upper part of the rear end of the housing 1. A driving motor 4 is fixedly installed on the right side of the housing 1. A driving shaft 41 is movably installed on the left side of the driving motor 4. A power mechanism 5 is fixedly sleeved outside the driving shaft 41. A transmission connecting rod group 6 is movably installed at the lower end of the power mechanism 5. A sealing mechanism 7 is movably installed on the left side of the transmission connecting rod group 6. The power mechanism 5 does not require an additional external circuit and can prevent the water in the water pump from flowing back when the water pump stops working. At the same time, the sealing mechanism 7 will not hinder the water flow when the water pump is working and can ensure that the water flow is in the maximum state.

[0035] After the existing impeller pump stops working, the water flow in the water pipe and the pump will flow back into the container. When it is used next time, it is necessary to fill the pump with water in advance, which greatly reduces the convenience.

[0036] The housing 1 protects the internal parts. During operation, the drive motor 4 is started, and the drive motor 4 drives the drive shaft 41 to rotate. The power mechanism 5 is fixedly sleeved outside the drive shaft 41. The power mechanism 5 rotates together with the drive shaft 41. The power mechanism 5 drives the transmission link group 6 to move, and the transmission link group 6 drives the sealing mechanism 7 to move, so that the sealing mechanism 7 is opened, allowing water to flow in from the water inlet 2, and after being pressurized, flowing out from the water outlet 3. When the drive motor 4 is turned off, the sealing mechanism 7 seals the water inlet pipe 2, preventing the water flow from flowing back into the lower container.

[0037] As an implementation manner of the present invention, such as Figures 1 to 7As shown, the power mechanism 5 includes a rotating base 51 which is fixedly sleeved on the outer surface of the drive shaft 41. The rotating base 51 is evenly provided with sliding grooves 52 on the side close to the drive motor 4. One end of the sliding groove 52 away from the drive shaft 41 is fixedly installed with a first return spring 53. The rotating base 51 is evenly and movably installed with sliding plates 54 on the side close to the drive motor 4. In the middle of the surface of the sliding plate 54 close to the rotating base 51, a slider 55 is fixedly installed. The sliding groove 52 is a T-shaped groove, and the slider 55 is a T-shaped block. The elastic force of the first return spring 53 is less than the sum of the centrifugal forces generated when the sliding plates 54 and the sliders 55 are driven by the drive motor 4 to rotate; and the elastic force of the first return spring 53 is greater than the self-weight of the sliding plates 54 and the sliders 55. The slider 54 can only move in the sliding groove 52 along the direction of the sliding groove 52. The transmission link group 6 includes a push rod 61 which is movably installed at the lower end of the sliding plate 54. On both sides of the central axis of the push rod 61, limiting grooves 64 are symmetrically provided. A second return spring 65 is movably installed inside the limiting grooves 64. At the lower end of the push rod 61, transmission rods 62 are movably and symmetrically installed. On the side away from the push rod 61 of the two transmission rods 62, a pull rod 63 is jointly and movably installed; the push rod 61 and the two transmission rods 62 are connected by a shaft, and the three are movably installed on the same shaft. The two transmission rods 62 and the pull rod 63 are connected by a shaft, and the two transmission rods 62 and the pull rod 63 are movably connected by two short shafts. The side of the pull rod 63 close to the push rod 61 is designed with a groove, and the length of the middle gap is greater than the width of the push rod 61. The diameter of the water inlet pipe 2 of this water pump is 32 cm. The displacement distance of the sliding plate 54 when rotating is 32 cm. The length of the transmission rod 62 is 32 cm. The sealing mechanism 7 includes a sealing baffle 71 which is movably installed on the left side of the pull rod 63. A protective cover 72 is fixedly installed on the outside of the sealing baffle 71. A sealing ring 73 is fixedly installed on the inner surface of the protective cover 72. The sealing ring 73 is closely combined with the sealing baffle 71. On the right side of the sealing baffle 71, third return springs 76 are evenly fixedly installed. A limiting rod 74 is fixedly installed on the upper surface of the protective cover 72. A limiting hole 75 is provided at the right end of the upper surface of the limiting rod 74, and the limiting hole 75 is sleeved on the outside of the push rod 61. The pull rod 63 penetrates through the protective cover 72. Under the elastic forces of the third return spring 76 and the second return spring 65, the transmission rod 62 can maintain a horizontal state when the water pump is not working. Under the elastic forces of the first return spring 53 and the second return spring 65, the push rod 61 can overcome its own gravity and always be at the highest point when the water pump is not working; the upper surface of the push rod 61 is arc-shaped; all components of this device are coated with more waterproof paint compared with existing water pumps.

[0038] During operation, the drive motor 4 starts, and the drive motor 4 drives the drive shaft 41 to rotate. The rotating base 51 in the power mechanism 5 is fixedly sleeved outside the drive shaft 41, and the rotating base 51 rotates with the drive shaft 41. The chute 52 is a T-shaped groove, and the slider 55 is a T-shaped block, so that the slider 55 can only move along the direction of the chute 52 in the chute 52. Since the elastic force of the first return spring 53 is less than the sum of the centrifugal forces generated when each sliding plate 54 and the slider 55 rotate driven by the drive motor 4, when rotating, the sliding plate 54 will expand outward, the slider 55 moves in the chute 52, and presses the first return spring 53. The limiting rod 74 is fixedly installed at the upper end of the protective cover 72, and a limiting hole 75 is opened on the right side of the limiting rod 74. Since the push rod 61 is restricted by the limiting hole 75, the push rod 61 can only move up and down. The push rod 61, the transmission rod 62, and the pull rod 63 are all connected by shafts. The side of the pull rod 63 close to the push rod 61 is designed with a slot, and the length of the middle gap is greater than the width of the push rod 61. After the sliding plate 54 expands outward, it will push the push rod 61. Since the upper surface of the push rod 61 is set to be arc-shaped, the wear will be reduced when the push rod 61 contacts the sliding plate 54 to extend the service life, so that the push rod 61 moves downward. The downward movement of the push rod 61 will drive the right side of the transmission rod 62 to move downward. Since the left side of the transmission rod 62 is movably connected to the pull rod 63 and the pull rod 63 penetrates through the protective cover 72, the left side of the transmission rod 62 can only move horizontally. In this way, when the push rod 61 moves downward, the left side of the transmission rod 62 will move to the right, pulling out the pull rod 63. Since the diameter of the water inlet pipe 2 of the water pump is 32 cm, the sealing baffle 71 needs to move 32 cm to the right during operation. Because the displacement distance of the sliding plate 54 during rotation is 32 cm and the length of the transmission rod 62 is 32 cm, this ensures that when the sliding plate 54 expands, it just drives the sealing baffle 71 to move 32 cm to the right, so that the sealing baffle 71 does not affect the water flow at all. At this time, the left side of the transmission rod 62 moves to the axis of the push rod 61;When the water pump stops working, the drive motor 4 stops working, the drive shaft 41 stops rotating, and the centrifugal force disappears. At this time, due to the action of the first return spring 53, the sliding plate 54 returns to its initial position. At this time, the push rod 61 moves upward under the action of the second return spring 65. However, since the left side of the transmission rod 62 is located on the axis of the push rod 61 at this time, a jamming situation may occur. Therefore, the third return spring 76 is added. The third return spring 76 causes the pull rod 63 to move to the left, and the pull rod 63 drives the transmission rod 62 to move to the left. At this time, an offset occurs between the left side of the transmission rod 62 and the axis of the push rod 61, and the jamming state is resolved. Under the combined action of the second return spring 65 and the third return spring 76, the transmission link group 6 returns to its initial state, and the transmission rod 62 returns to and maintains a horizontal position. At this time, the sealing baffle 71 moves to the left into the water inlet pipe 2. Since sealing rings 73 are uniformly arranged around the sealing baffle 71, and sealing rings 73 are also fixedly installed inside the protective cover 72, the sealing baffle 71 blocks the water flow, making the inside filled with water for reuse next time. Compared with ordinary water pumps, the inside of this water pump is always in water, so more waterproof paint needs to be applied. This device does not affect the normal water flow when the water pump is working, and will not reduce the water flow, suction lift, or head of the water pump. When the water pump stops working, it can prevent the water from flowing back into the water storage container, keeping the inside of the water pump always filled with water for next use.

[0039] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-resistant anti-backflow water pump, comprising a housing (1), a water inlet pipe (2) is fixedly installed in the middle of the left side of the housing (1), a water outlet pipe (3) is fixedly installed on the upper part of the rear end of the housing (1), a driving motor (4) is fixedly installed on the right side of the housing (1), and a driving shaft (41) is movably installed on the left side of the driving motor (4); It is characterized in that a power mechanism (5) is fixedly sleeved on the outer side of the driving shaft (41), a transmission connecting rod group (6) is movably installed at the lower end of the power mechanism (5), and a sealing mechanism (7) is movably installed on the left side of the transmission connecting rod group (6); The power mechanism (5) does not require an additional external circuit to prevent the water in the water pump from flowing back when the water pump stops working. At the same time, the sealing mechanism (7) does not hinder the water flow when the water pump is working, and can ensure that the water flow is in the maximum state; The power mechanism (5) includes a rotating base (51), the rotating base (51) is fixedly sleeved on the outer surface of the driving shaft (41), a chute (52) is evenly opened on one side of the rotating base (51) close to the driving motor (4), and a first return spring (53) is fixedly installed at one end of the chute (52) away from the driving shaft (41). A sliding plate (54) is evenly movably installed on one side of the rotating base (51) close to the driving motor (4), and a slider (55) is fixedly installed in the middle of the surface of the sliding plate (54) close to the rotating base (51); The chute (52) is a T-shaped groove, the slider (55) is a T-shaped block, the elastic force of the first return spring (53) is less than the sum of the centrifugal forces generated when the sliding plates (54) and the sliders (55) are driven by the driving motor (4) to rotate, and the elastic force of the first return spring (53) is greater than the self-weight of the sliding plates (54) and the sliders (55). The slider (55) can only move in the chute (52) along the direction of the chute (52); The transmission connecting rod group (6) includes a push rod (61), the push rod (61) is movably installed at the lower end of the sliding plate (54), limiting grooves (64) are symmetrically opened on both sides of the central axis of the push rod (61), a second return spring (65) is movably installed inside the limiting grooves (64), and transmission rods (62) are movably and symmetrically installed at the lower end of the push rod (61). A pull rod (63) is movably installed on the side of the two transmission rods (62) away from the push rod (61); The push rod (61) and the two transmission rods (62) are connected by a shaft, and the three are movably installed on the same shaft. The two transmission rods (62) and the pull rod (63) are connected by a shaft. The two transmission rods (62) and the pull rod (63) are movably connected by two short shafts. The side of the pull rod (63) close to the push rod (61) is designed with a slot, and the length of the middle gap is greater than the width of the push rod (61); When the water pump stops working, the drive motor (4) stops working, the drive shaft (41) stops rotating, and the centrifugal force disappears. At this time, due to the action of the first return spring (53), the sliding plate (54) returns to its initial position. At this time, the push rod (61) will move upward under the action of the second return spring (65). However, since the left side of the transmission rod (62) is located on the axis of the push rod (61) at this time, a jamming condition may occur. Therefore, a third return spring (76) is added. The third return spring (76) causes the pull rod (63) to move to the left, and the pull rod (63) drives the transmission rod (62) to move to the left. At this time, an offset occurs between the left side of the transmission rod (62) and the axis of the push rod (61), and the jamming state is resolved. Under the combined action of the second return spring (65) and the third return spring (76), the transmission link group (6) returns to its initial state, and the transmission rod (62) returns to and maintains a horizontal position. At this time, the sealing baffle (71) moves to the left into the water inlet pipe (2). Since sealing rings (73) are evenly arranged around the sealing baffle (71) and sealing rings (73) are also fixedly installed inside the protective cover (72), the sealing baffle (71) blocks the water flow, making the inside full of water for reuse next time. Compared with ordinary water pumps, the inside of this water pump is always in water, so more waterproof coatings are needed. The device does not affect the normal water flow when the water pump is working and will not reduce the water flow, suction lift, or head of the water pump. When the water pump stops working, it can prevent the water from flowing back into the water storage container, keeping the inside of the water pump always full of water for next use.

2. A pressurized anti-backflow water pump according to claim 1, characterized in that, the diameter of the water inlet pipe (2) of this water pump is 32 cm, the displacement distance when the sliding plate (54) rotates is 32 cm, and the length of the transmission rod (62) is 32 cm.

3. A pressurized anti-backflow water pump according to claim 1, characterized in that, the sealing mechanism (7) includes a sealing baffle (71), the sealing baffle (71) is movably installed on the left side of the pull rod (63), a protective cover (72) is fixedly installed on the outside of the sealing baffle (71), a sealing ring (73) is fixedly installed on the inner surface of the protective cover (72), the sealing ring (73) is tightly combined with the sealing baffle (71), sealing rings (73) are arranged around the sealing baffle (71), third return springs (76) are evenly fixedly installed on the right side of the sealing baffle (71), a limiting rod (74) is fixedly installed on the upper surface of the protective cover (72), and a limiting hole (75) is opened at the right end of the upper surface of the limiting rod (74).

4. A pressurized anti-backflow water pump according to claim 3, characterized in that, The pull rod (63) penetrates through the protective cover (72). Under the elastic force of the third return spring (76) and the second return spring (65), the transmission rod (62) can maintain a horizontal state when the water pump is not working. Under the elastic force of the first return spring (53) and the second return spring (65), the push rod (61) can always be located at the highest point by overcoming its own gravity when the water pump is not working.

5. A pressure-resistant anti-backflow water pump according to claim 1, characterized in that, the upper surface of the push rod (61) is arc-shaped.

6. A pressure-resistant anti-backflow water pump according to claim 1, characterized in that, more waterproof coatings are applied to the water outlet pipe (3) and the drive shaft (41) compared with existing water pumps.

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