Self-suction centrifugal pump with self-cleaning function

Abstract

The invention relates to the technical field of centrifugal pumps, in particular to a self-suction centrifugal pump with a self-cleaning function, which comprises a motor, a pump body fixedly connected to the output shaft end of the motor, an inlet pipe fixedly connected to the left end of the pump body through a flange plate, a filter plate fixedly connected to the inside of the inlet pipe, and a cleaning box fixedly connected to the side wall of the inlet pipe. A cleaning head is arranged in the cleaning box and used for cleaning the filter plate, a power driving mechanism is arranged in the inlet pipe and used for driving the cleaning head to move up and down in a reciprocating mode, and the power driving mechanism comprises a connecting assembly and turbine blades. Large particles can be intercepted through the arranged filter plate, so that the problem that when water containing large-particle gravel is sucked, the solid particles can abrade the impeller can be avoided, meanwhile, the cleaning head driven by the power driving mechanism reciprocates up and down, the filter plate can be automatically cleaned, and the cleaning efficiency is improved. Therefore, the problem of blockage caused by large sand can be avoided.

Description

Technical Field

[0001] The invention belongs to the technical field of centrifugal pumps, and in particular relates to a self-priming centrifugal pump with a self-cleaning function. Background Art

[0002] A self-priming centrifugal pump is a specially designed centrifugal pump that does not need to be filled with water before starting. After a short period of operation, the pump itself can suck up water and start normal operation. The main feature of this pump is that when the pump is started, the pump itself can automatically remove the gas in the suction pipeline and fill it with the delivered liquid, that is, it does not need to be filled before starting.

[0003] At present, many self-priming centrifugal pumps are not designed with self-cleaning functions, which results in the debris in the water being easily sucked into the pump body during the operation of the pump. Especially when water containing large particles of sand and gravel is sucked in, these solid particles will cause wear on the impeller. As the pump runs for a long time, this wear will gradually accumulate and may eventually cause damage to the impeller, thereby affecting the service life of the centrifugal pump. Summary of the invention

[0004] The purpose of the present invention is to provide a self-priming centrifugal pump with a self-cleaning function to solve the problem in the prior art that impurities in water are sucked into the pump body, especially when water containing large particles of sand and gravel is sucked in, these solid particles will cause wear on the impeller.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] A self-priming centrifugal pump with a self-cleaning function comprises a motor, wherein the output shaft end of the motor is fixedly connected to a pump body, the left end of the pump body is fixedly connected to an inlet pipe via a flange, a filter plate is fixedly connected to the inside of the inlet pipe, a cleaning box is fixedly connected to the side wall of the inlet pipe, a cleaning head is arranged inside the cleaning box, the cleaning head is used to clean the filter plate, a power drive mechanism is arranged inside the inlet pipe, and the power drive mechanism is used to drive the cleaning head to move reciprocally up and down.

[0007] Preferably: the power drive mechanism includes a connecting assembly and turbine blades, the inlet pipe located at the right end of the filter plate is rotatably connected to a rotating shaft through a bearing seat, the right end of the rotating shaft is fixedly connected to the turbine blade, and the end of the rotating shaft away from the turbine blade is fixedly connected to the first bevel gear.

[0008] Preferably, a worm is rotatably connected inside the inlet pipe, a second bevel gear is fixedly connected to the lower end of the worm, and the first bevel gear and the second bevel gear are meshed with each other.

[0009] Preferably, a transmission rod is rotatably connected inside the cleaning box, a worm gear is fixedly connected to the front end of the transmission rod, and the worm gear and the worm gear are meshed with each other.

[0010] Preferably: a connecting assembly is provided at the upper end of the interior of the cleaning box, and the connecting assembly includes a reciprocating screw and a connecting rod. The upper end of the interior of the cleaning box is rotatably connected to a reciprocating screw. Two groups of reciprocating screws are provided. The rear side walls of the two groups of reciprocating screws are fixedly connected to a second gear, and the two groups of the second gears are meshed with each other. The rear side wall of the transmission rod is fixedly connected to a first gear, and the first gear and the second gear are meshed with each other.

[0011] Preferably, a side wall of one side of the reciprocating screw is threadedly connected to a movable connecting head, the movable connecting head is rotatably connected to a connecting rod, and an end of the connecting rod away from the movable connecting head is rotatably connected to a cleaning head.

[0012] Preferably: the two groups of connecting rods are in a cross shape, the cleaning head includes a cutting head and a push rod, the end of the connecting rod away from the movable connecting head is rotatably connected to the cutting head, an installation groove is provided on the upper end surface of the cutting head, the end of the connecting rod away from the movable connecting head is located inside the installation groove, and the lower end of the cutting head is fixedly connected to the push rod.

[0013] Preferably, the filter holes of the filter plate are arranged as strip-shaped filter holes, the strip-shaped filter holes are perpendicular to the cutting head, the filter plate and the cutting head are both made of cobalt-based alloy material, and the filter plate and the cutting head abut against each other.

[0014] Preferably, the lower end of the cleaning box is fixedly connected to the collecting box by bolts, a discharge port is provided on the lower end surface of the cleaning box, the interior of the cleaning box is connected to the interior of the collecting box through the discharge port, and a partition mechanism is provided inside the discharge port.

[0015] Preferably, the partition mechanism includes a partition and an elastic sheet, the partition is rotatably connected inside the discharge port, the lower end of the partition is fixedly connected to the elastic sheet, and the side of the elastic sheet away from the partition is fixedly connected to the inner wall of the discharge port.

[0016] Compared with the prior art, the present invention has the following beneficial effects:

[0017] 1. The present invention realizes effective filtration of larger sand and gravel particles through the synergistic effect of the cleverly designed filter plate and the cleaning head. This design enables the filter plate to intercept and separate large sand and gravel particles, preventing them from entering the pump body, thereby avoiding the sand and gravel from causing significant friction damage to the impeller.

[0018] 2. In the present invention, through the cooperation of the rotating shaft, turbine blades, the first bevel gear, the worm, the second bevel gear, the transmission rod, the worm, the first gear and the connecting assembly, when the water flows inside the inlet pipe, it will drive the turbine blades to rotate, thereby providing a driving force for the cleaning head to move up and down reciprocatingly, thereby achieving the effect of automatically cleaning the filter plate.

[0019] 3. In the present invention, the top rod arranged under the cutting head cooperates with the partition and the elastic sheet. When the cutting head moves downward, the structure can guide the sand and gravel generated during the filter plate cleaning process into the collection box through the partition, effectively preventing the sand and gravel from clogging the filter plate again. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0021] Figure 2 This is a schematic diagram of the right side plan structure of the inlet pipe of the present invention;

[0022] Figure 3 This is a schematic diagram of the main cross-sectional plan structure of the inlet pipe of the present invention;

[0023] Figure 4 For the present invention Figure 3 The enlarged structural diagram of part A in the middle;

[0024] Figure 5 It is a schematic diagram of the overall top view of the power drive mechanism of the present invention;

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

[0026] Figure 7 It is a schematic diagram of the left-side cross-sectional plan structure of the cleaning head of the present invention;

[0027] Figure 8 It is a schematic diagram of the exploded structure of the connection assembly of the present invention.

[0028] In the figure: 1. motor; 2. pump body; 3. inlet pipe; 4. cleaning box; 41. discharge port; 5. filter plate; 51. strip filter hole; 6. cleaning head; 61. cutting head; 62. mounting groove; 63. push rod; 7. power drive mechanism; 71. rotating shaft; 72. turbine blade; 73. first bevel gear; 74. worm; 75. second bevel gear; 76. transmission rod; 77. worm wheel; 78. first gear; 79. connecting assembly; 791. reciprocating screw; 792. movable connecting head; 793. connecting rod; 794. second gear; 8. collecting box; 9. separating mechanism; 91. partition; 92. elastic sheet. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions 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.

[0030] Reference Figure 1-Figure 8 As shown, the present invention provides a self-priming centrifugal pump with a self-cleaning function, including a motor 1, a pump body 2 is fixedly connected to the output shaft end of the motor 1, an inlet pipe 3 is fixedly connected to the left end of the pump body 2 through a flange, a filter plate 5 is fixedly connected to the inside of the inlet pipe 3, a cleaning box 4 is fixedly connected to the side wall of the inlet pipe 3, a cleaning head 6 is arranged inside the cleaning box 4, the cleaning head 6 is used to clean the filter plate 5, a power driving mechanism 7 is arranged inside the inlet pipe 3, the power driving mechanism 7 is used to drive the cleaning head 6 to move up and down reciprocatingly; when working, the filter plate 5 can intercept larger particles, so as to avoid the problem that these solid particles will cause wear to the impeller when water with large particles of sand and gravel is sucked in, and at the same time, the cleaning head 6 driven by the power driving mechanism 7 moves up and down reciprocatingly, so as to automatically clean the filter plate 5, so as to avoid the problem of clogging by large sand and gravel.

[0031] In a further embodiment, referring to Figure 5-Figure 8The power drive mechanism 7 includes a connecting assembly 79 and a turbine blade 72. The inlet pipe 3 located at the right end of the filter plate 5 is rotatably connected to a rotating shaft 71 through a bearing seat. The right end of the rotating shaft 71 is fixedly connected to the turbine blade 72. The end of the rotating shaft 71 away from the turbine blade 72 is fixedly connected to a first bevel gear 73. The inlet pipe 3 is rotatably connected to a worm 74. The lower end of the worm 74 is fixedly connected to a second bevel gear 75. The first bevel gear 73 and the second bevel gear 75 are meshed with each other. The cleaning box 4 is rotatably connected to a transmission rod 76. The front end of the transmission rod 76 is fixedly connected to a worm gear 77. The worm 74 and the worm gear 77 are meshed with each other. The upper end of the cleaning box 4 is provided with a connecting assembly 79. The connecting assembly 79 includes a reciprocating screw rod 791 and a connecting rod 793. The upper end of the cleaning box 4 is rotatably connected to a reciprocating screw rod 791. The reciprocating screw rod 791 is provided with two sets of The rear side walls of the two groups of reciprocating screw rods 791 are fixedly connected with the second gear 794, and the two groups of second gears 794 are meshed with each other. The rear side wall of the transmission rod 76 is fixedly connected with the first gear 78, and the first gear 78 and the second gear 794 are meshed with each other. A movable connecting head 792 is threadedly connected to the side wall of one side of the reciprocating screw rod 791, and the movable connecting head 792 is rotatably connected with a connecting rod 793. The end of the connecting rod 793 away from the movable connecting head 792 is rotatably connected to the cleaning head 6. The two groups of connecting rods 793 are cross-shaped. The cleaning head 6 includes a cutting head 61 and a push rod 63. The end of the connecting rod 793 away from the movable connecting head 792 is rotatably connected to the cutting head 61. The upper end surface of the cutting head 61 is provided with a mounting groove 62. The end of the connecting rod 793 away from the movable connecting head 792 is located inside the mounting groove 62, and the lower end of the cutting head 61 is fixedly connected with the push rod 63.

[0032] In the present embodiment, when working, water is sucked into the pump body 2 through the inlet pipe 3 by the pump body 2. At this time, the flowing water flow will be able to drive the turbine blades 72 to rotate, and the rotation of the turbine blades 72 drives the rotating shaft 71 to rotate, and the rotation of the rotating shaft 71 drives the first bevel gear 73 to rotate. Since the first bevel gear 73 and the second bevel gear 75 are meshed with each other, the second bevel gear 75 is driven to rotate, and the rotation of the second bevel gear 75 drives the worm 74 to rotate. Since the worm 74 and the worm wheel 77 are meshed with each other, the worm wheel 77 is driven to rotate, and the rotation of the worm wheel 77 drives the transmission rod 76 to rotate, and the rotation of the transmission rod 76 drives the first gear 78 to rotate. Since the first gear 78 and the second gear 794 are meshed with each other, the second gear 794 is driven to rotate, and two sets of second The gears 794 mesh with each other, thereby driving the two sets of reciprocating screws 791 to rotate simultaneously, thereby driving the movable connecting head 792 to move back and forth on the reciprocating screw 791, and the movement of the movable connecting head 792 drives the connecting rod 793 to move, thereby driving the cutting head 61 to move back and forth up and down, thereby pushing the sand and gravel on the left side of the filter plate 5, thereby preventing the sand and gravel from clogging the filter plate 5; through the cooperation of the worm 74 and the worm wheel 77 and the movement of the movable connecting head 792 on the reciprocating screw 791, on the one hand, a deceleration effect is achieved to ensure that the cutting head 61 can move slowly at the left end of the filter plate 5, and on the other hand, the shear stress between the cutting head 61 and the filter plate 5 can be increased, which can effectively cut off the sand and gravel stuck in the filter plate 5, ensuring the normal movement of the cutting head 61.

[0033] In a further embodiment, referring to Figure 5-Figure 6 The filter holes of the filter plate 5 are arranged as strip-shaped filter holes, the strip-shaped filter holes are perpendicular to the cutting head 61 , the filter plate 5 and the cutting head 61 are both made of cobalt-based alloy material, and the filter plate 5 and the cutting head 61 abut against each other.

[0034] In this embodiment, the filter holes of the filter plate 5 are set as strip-type filter holes and the strip-type filter holes and the cutting head 61 are perpendicular to each other, so that the sand and gravel can move along the strip-type filter holes, thereby reducing the shear of the sand and gravel between the filter holes and the cutting head 61, thereby extending the service life of the filter plate 5 and the cutting head 61. At the same time, the filter plate 5 and the cutting head 61 are made of cobalt-based alloy material, so that the filter plate 5 and the cutting head 61 become more wear-resistant and rust-proof, further extending the service life of the filter plate 5 and the cutting head 61.

[0035] In a further embodiment, referring to Figure 3-Figure 4The lower end of the cleaning box 4 is fixedly connected to the collecting box 8 by bolts. A discharge port 41 is provided on the lower end surface of the cleaning box 4. The interior of the cleaning box 4 is connected to the interior of the collecting box through the discharge port 41. A partition mechanism 9 is provided inside the discharge port 41. The partition mechanism 9 includes a partition plate 91 and an elastic sheet 92. The partition plate 91 is rotatably connected inside the discharge port 41. The lower end of the partition plate 91 is fixedly connected to the elastic sheet 92. The side of the elastic sheet 92 away from the partition plate 91 is fixedly connected to the inner wall of the discharge port 41.

[0036] In this embodiment, the downward movement of the cutting head 61 drives the push rod 63 to move downward. In the process of cutting and moving downward, large particles of sand and gravel can be driven downward. When the push rod 63 moves downward, it abuts against the partition 91 and pushes the partition 91 to rotate, so that the cutting head 61 moves toward the inside of the discharge port 41, thereby driving the sand and gravel to the inside of the collection box 8 to achieve the collection effect. When the partition 91 rotates, it drives the elastic sheet 92 to deform, so that in the process of the push rod 63 detaching from the partition 91, the partition 91 is driven to move to the initial position through the recovery deformation of the elastic sheet 92.

[0037] The working principle of the present invention is as follows: when working, the filter plate 5 is provided to filter larger sand and gravel, thereby preventing the sand and gravel from causing greater friction damage to the impeller, and then the pump body 2 works to suck water into the pump body 2 through the inlet pipe 3. At this time, the flowing water flow will be able to drive the turbine blades 72 to rotate, and the rotation of the turbine blades 72 drives the rotating shaft 71 to rotate, and the rotation of the rotating shaft 71 drives the first bevel gear 73 to rotate. Since the first bevel gear 73 and the second bevel gear 75 are meshed with each other, the second bevel gear 75 is driven to rotate, and the second bevel gear 75 rotates. The worm 74 is driven to rotate, and since the worm 74 and the worm wheel 77 are meshed with each other, the worm wheel 77 is driven to rotate, and the rotation of the worm wheel 77 drives the transmission rod 76 to rotate, and the rotation of the transmission rod 76 drives the first gear 78 to rotate, and since the first gear 78 and the second gear 794 are meshed with each other, the second gear 794 is driven to rotate, and the two groups of second gears 794 are meshed with each other, thereby driving the two groups of reciprocating screw rods 791 to rotate at the same time, and then driving the mobile connector 792 to move on the reciprocating screw rod 791 to make a reciprocating movement, and the mobile connector 792 moves to drive the reciprocating screw rod 791. The rod 793 moves, thereby driving the cutting head 61 to move up and down reciprocatingly, thereby being able to push the sand and gravel on the left side of the filter plate 5, thereby being able to prevent the sand and gravel from clogging the filter plate 5; through the cooperation between the worm 74 and the worm wheel 77 and the movement of the connecting head 792 on the reciprocating screw rod 791, firstly, a deceleration effect is achieved, ensuring that the cutting head 61 can move slowly at the left end of the filter plate 5; secondly, the shear stress between the cutting head 61 and the filter plate 5 can be increased, which can effectively cut off the sand and gravel stuck in the filter plate 5, ensuring the normal movement of the cutting head 61; by cutting The cutter head 61 moves downward, driving the push rod 63 downward. In the process of cutting and moving downward, the large particles of sand and gravel can be driven downward. When the push rod 63 moves downward, it abuts against the partition 91 and pushes the partition 91 to rotate, so that the cutting head 61 moves toward the inside of the discharge port 41, thereby driving the sand and gravel to the inside of the collection box 8 to achieve the collection effect. When the partition 91 rotates, the elastic sheet 92 will be deformed, so that in the process of the push rod 63 detaching from the partition 91, the partition 91 is driven to move to the initial position through the recovery deformation of the elastic sheet 92.

[0038] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A self-priming centrifugal pump with a self-cleaning function, comprising a motor (1), characterized in that: The output shaft end of the motor (1) is fixedly connected to a pump body (2); the left end of the pump body (2) is fixedly connected to an inlet pipe (3) via a flange; a filter plate (5) is fixedly connected inside the inlet pipe (3); a cleaning box (4) is fixedly connected to the side wall of the inlet pipe (3); a cleaning head (6) is arranged inside the cleaning box (4); the cleaning head (6) is used to clean the filter plate (5); a power drive mechanism (7) is arranged inside the inlet pipe (3); the power drive mechanism (7) is used to drive the cleaning head (6) to move reciprocatingly up and down.

2. A self-priming centrifugal pump with self-cleaning function according to claim 1, characterized in that: The power drive mechanism (7) comprises a connecting assembly (79) and a turbine blade (72); a rotating shaft (71) is rotatably connected to the inlet pipe (3) at the right end of the filter plate (5) via a bearing seat; the right end of the rotating shaft (71) is fixedly connected to the turbine blade (72); and the end of the rotating shaft (71) away from the turbine blade (72) is fixedly connected to the first bevel gear (73).

3. A self-priming centrifugal pump with self-cleaning function according to claim 2, characterized in that: A worm (74) is rotatably connected inside the inlet pipe (3), a second bevel gear (75) is fixedly connected to the lower end of the worm (74), and the first bevel gear (73) and the second bevel gear (75) are meshed with each other.

4. A self-priming centrifugal pump with self-cleaning function according to claim 3, characterized in that: A transmission rod (76) is rotatably connected inside the cleaning box (4), a worm wheel (77) is fixedly connected to the front end of the transmission rod (76), and the worm (74) and the worm wheel (77) are meshed with each other.

5. A self-priming centrifugal pump with self-cleaning function according to claim 4, characterized in that: A connecting assembly (79) is provided at the upper end of the interior of the cleaning box (4), and the connecting assembly (79) includes a reciprocating screw (791) and a connecting rod (793). The upper end of the interior of the cleaning box (4) is rotatably connected to the reciprocating screw (791), and the reciprocating screw (791) is provided with two groups. The rear side walls of the two groups of reciprocating screws (791) are fixedly connected to a second gear (794), and the two groups of the second gears (794) are meshed with each other. The rear side wall of the transmission rod (76) is fixedly connected to a first gear (78), and the first gear (78) and the second gear (794) are meshed with each other.

6. A self-priming centrifugal pump with self-cleaning function according to claim 5, characterized in that: A movable connecting head (792) is threadedly connected to a side wall of one side of the reciprocating screw rod (791), the movable connecting head (792) is rotatably connected to a connecting rod (793), and one end of the connecting rod (793) away from the movable connecting head (792) is rotatably connected to a cleaning head (6).

7. A self-priming centrifugal pump with self-cleaning function according to claim 5, characterized in that: The two groups of connecting rods (793) are in a cross shape. The cleaning head (6) includes a cutting head (61) and a push rod (63). The end of the connecting rod (793) away from the movable connecting head (792) is rotatably connected to the cutting head (61). The upper end surface of the cutting head (61) is provided with a mounting groove (62). The end of the connecting rod (793) away from the movable connecting head (792) is located inside the mounting groove (62). The lower end of the cutting head (61) is fixedly connected to the push rod (63).

8. The self-priming centrifugal pump with self-cleaning function according to claim 1, characterized in that: The filter holes of the filter plate (5) are arranged as strip-shaped filter holes, the strip-shaped filter holes and the cutting blade (61) are perpendicular to each other, the filter plate (5) and the cutting blade (61) are both made of cobalt-based alloy material, and the filter plate (5) and the cutting blade (61) are in contact with each other.

9. A self-priming centrifugal pump with self-cleaning function according to claim 1, characterized in that: The lower end of the cleaning box (4) is fixedly connected to the collecting box (8) by means of bolts, a discharge port (41) is provided on the lower end surface of the cleaning box (4), the interior of the cleaning box (4) is connected to the interior of the collecting box through the discharge port (41), and a partition mechanism (9) is provided inside the discharge port (41).

10. A self-priming centrifugal pump with self-cleaning function according to claim 9, characterized in that: The partition mechanism (9) comprises a partition (91) and an elastic sheet (92); the partition (91) is rotatably connected inside the discharge port (41); the lower end of the partition (91) is fixedly connected to the elastic sheet (92); and the side of the elastic sheet (92) away from the partition (91) is fixedly connected to the inner wall of the discharge port (41).

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