Water suction pump sand prevention mechanism for irrigation

Abstract

The utility model relates to the field of water pumps, and discloses a water pump sand prevention mechanism for irrigation, which comprises a sand prevention cover cylinder, one end of the sand prevention cover cylinder is provided with a water inlet, one end of the sand prevention cover cylinder far away from the water inlet is fixedly connected with a water inlet pipe, and one end of the water inlet pipe extending into the sand prevention cover cylinder is fixedly connected with a detachable filter screen cylinder. A mounting bracket is fixedly connected in the water inlet pipe, the lower end of the mounting bracket is rotatably connected with a rotating shaft, the outer wall of the rotating shaft is fixedly connected with transmission blades arranged in an annular array, a first rotating hole matched with the rotating shaft is formed in the center of the lower end of the filter screen cylinder, and the outer wall of the rotating shaft is fixedly connected with a connecting sleeve located below the first rotating hole; the outer wall of the connecting sleeve is fixedly connected with a connecting plate, and the two ends of the connecting plate are fixedly connected with first brush plates matched with the filter screen cylinder. Compared with the prior art, the utility model has the advantages that the blockage is prevented, the manual cleaning is not needed, and the time and labor are saved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of water pump, concretely points to a water pump sand prevention mechanism for irrigation. BACKGROUND

[0002] The water pump is one of the main facilities of irrigation operation, and the existing water pump used in agriculture is mostly used in farmland, pond and other scenes, and many water pumps used for pumping water in the river channel can easily suck in the silt impurities in the river channel and cause the blockage of the water pump, when the water pump is blocked, not only the pumping effect is affected, but also the damage of the water pump is caused.

[0003] Chinese patent CN107684767A discloses an agricultural water pump water filtering device, which comprises a machine box, a water inlet baffle groove, a built-in nozzle, a conduit, a water pump, a first filter screen, a second filter screen, a motor, a bottom box, a fixing frame, a heating pipe, a water outlet pipe, a drain outlet, a water pumping port, a fan, a standing groove, a filter pipe and a third filter screen. The beneficial effects of the present application are that the water pump is connected with the machine box through the conduit, and the conduit is connected with the built-in nozzle inside the water inlet baffle groove, so that the water pumped out by the water pump is not directly introduced into the inside of the bottom box, but first passes through the inside of the water inlet baffle groove, slides along the inner wall of the water inlet baffle groove to the inside of the bottom box, and is then pre-filtered by the first filter screen at the bottom of the water inlet baffle groove. The water flow filtered by the first filter screen is filtered again by the second filter screen. The filter pipe is installed inside the bottom box, and a layer of third filter screen is sleeved on the filter pipe, so that the water flow is discharged after being filtered for the third time. The filter screen for preventing sand is used in the existing water pump, which is easy to be blocked after long time use, and needs to be cleaned manually, which is time-consuming and laborious. SUMMARY

[0004] The technical problem to be solved by the utility model is that the filter screen for preventing sand in the existing water pump is easy to be blocked after long time use, and needs to be cleaned manually, which is time-consuming and laborious.

[0005] To solve the above technical problems, the technical scheme provided by the utility model is as follows:

[0006] A water pump sand prevention mechanism for irrigation comprises a sand prevention cover cylinder, one end of the sand prevention cover cylinder is provided with a water inlet, the end of the sand prevention cover cylinder away from the water inlet is fixedly connected to a water inlet pipe, the end of the water inlet pipe extending into the sand prevention cover cylinder is detachably connected to a filter screen cylinder, a mounting bracket is fixedly connected to the water inlet pipe, the lower end of the mounting bracket is rotatably connected to a rotating shaft, the outer wall of the rotating shaft is fixedly connected to transmission blades arranged along a circular array, the lower end of the filter screen cylinder is provided with a first rotating hole cooperating with the rotating shaft at the center position, the outer wall of the rotating shaft is provided with a connecting sleeve located below the first rotating hole, the outer wall of the connecting sleeve is fixedly connected to a connecting plate, and both ends of the connecting plate are fixedly connected to a first brush plate cooperating with the filter screen cylinder.

[0007] The transmission blades are propeller-shaped and can rotate under the drive of water flow.

[0008] As an improvement, a pre-filter is slidably inserted into the water inlet, a mounting retaining ring that cooperates with the pre-filter is fixedly connected to the sand cover tube, a first fixing bolt is threadedly connected to the pre-filter, and a first fixing screw hole that cooperates with the first fixing bolt is provided on the mounting retaining ring.

[0009] As an improvement, a second rotating hole cooperating with the rotating shaft is provided in the center of the pre-filter, a stud is fixedly connected to the end of the rotating shaft, a fixing cylinder is threadedly connected to the stud, and a second brush plate cooperating with the pre-filter is fixedly connected to one side of the fixing cylinder.

[0010] As an improvement, the stud is threadedly connected to a limiting nut at the lower end of the fixing cylinder, and a slot is provided on one side of the rotating shaft between the second rotating hole and the fixing cylinder. A limiting block is slidably inserted into the slot, and a limiting spring is fixedly connected to the slot to cooperate with the limiting block.

[0011] As an improvement, the water inlet pipe extends into the sand shield cylinder and is provided with an external thread at one end, and the upper end of the filter cylinder is fixedly connected to an internal thread cylinder.

[0012] As an improvement, the connecting sleeve is sleeved on the outer wall of the rotating shaft, a second fixing bolt is threadedly connected to one side of the connecting sleeve, and a second fixing screw hole that cooperates with the second fixing bolt is provided on one side of the rotating shaft.

[0013] The advantages of this utility model compared with the prior art are:

[0014] During the pumping process, water flows into the water inlet cylinder to flush the transmission blades. Under the flow of water, the transmission blades 4 drive the rotating shaft to rotate, and the rotating shaft drives the connecting plate to rotate. The connecting plate drives the first brush plates on both sides to brush the outer wall of the filter cylinder, and brushes off the mud and sand adhering to the outer wall of the filter cylinder to prevent blockage. There is no need for manual cleaning, which saves time and effort. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is an explosion drawing of the sand prevention mechanism of the water pump for irrigation.

[0016] Figure 2 is a structure schematic view of the sand prevention mechanism of the water pump for irrigation.

[0017] Figure 3 is a sectional view of the sand prevention mechanism of the water pump for irrigation.

[0018] Figure 4 is an enlarged view of A of the sand prevention mechanism of the water pump for irrigation.

[0019] Figure 5 is a first brush plate structure schematic view of the sand prevention mechanism of the water pump for irrigation.

[0020] As shown in the figure: 1, sand cover cylinder; 2, water inlet pipe; 3, rotating shaft; 4, transmission blade; 5, connecting plate; 6, first brush plate; 7, filter screen cylinder; 8, internal thread cylinder; 9, pre-filter screen; 10, fixed cylinder; 11, second brush plate; 12, limit nut; 13, stud; 14, slot; 15, limit block; 16, limit spring; 17, mounting bracket; 18, mounting check ring; 19, connecting sleeve; 20, second fixing bolt; 21, first fixing bolt. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.

[0022] As Figures 1 to 4 shown, a sand prevention mechanism of a water pump for irrigation, including sand cover cylinder 1, sand cover cylinder 1 one end is equipped with water inlet, the water inlet is slidably inserted with pre-filter screen 9, sand cover cylinder 1 is fixedly connected with the installation check ring 18 of cooperation with pre-filter screen 9 in, pre-filter screen 9 is threadedly connected with first fixing bolt 21, installation check ring 18 is equipped with the first fixed screw hole of cooperation with first fixing bolt 21, sand cover cylinder 1 is fixedly connected with water inlet pipe 2 away from water inlet one end, water inlet pipe 2 extends to the filter screen cylinder 7 of detachable fixed connection in sand cover cylinder 1 one end, water inlet pipe 2 extends to the external thread of sand cover cylinder 1 one end, filter screen cylinder 7 upper end is fixedly connected with internal thread cylinder 8.

[0023] The water inlet pipe 2 is fixedly connected with a mounting bracket 17, the lower end of the mounting bracket 17 is rotationally connected with a rotating shaft 3, the outer wall of the rotating shaft 3 is fixedly connected with transmission blades 4 arranged in an annular array, the transmission blades 4 are arranged obliquely, the lower end center of the filter screen cylinder 7 is provided with a first rotating hole matched with the rotating shaft 3, the outer wall of the rotating shaft 3 is sleeved with a connecting sleeve 19 located below the first rotating hole, the connecting sleeve 19 is slidingly sleeved on the outer wall of the rotating shaft 3, one side of the connecting sleeve 19 is threadedly connected with a second fixing bolt 20, one side of the rotating shaft 3 is provided with a second fixing hole matched with the second fixing bolt 20, the outer wall of the connecting sleeve 19 is fixedly connected with a connecting plate 5, both ends of the connecting plate 5 are fixedly connected with first brush plates 6 matched with the filter screen cylinder 7.

[0024] The center of the pre-filter screen 9 is provided with a second rotating hole matched with the rotating shaft 3, the end of the rotating shaft 3 is fixedly connected with a stud 13, the stud 13 is threadedly connected with a fixing cylinder 10, one side of the fixing cylinder 10 is fixedly connected with a second brush plate 11 matched with the pre-filter screen 9, the stud 13 is threadedly connected with a limiting nut 12 at the lower end of the fixing cylinder 10, one side of the rotating shaft 3 is provided with a slot 14 between the second rotating hole and the fixing cylinder 10, a limiting block 15 is slidingly inserted into the slot 14, a limiting spring 16 matched with the limiting block 15 is fixedly connected in the slot 14, during installation, the fixing cylinder 10 is first screwed on the stud 13, so that the fixing cylinder 10 abuts against the lower end of the limiting block 15, and then the limiting nut 12 is screwed in, so that the fixing cylinder 10 is clamped between the limiting nut 12 and the limiting block 15.

[0025] In specific use, the water inlet pipe 2 is connected with the input end of the water pump, when pumping water, the sand prevention cover cylinder 1 is placed in the water source, the water pump is started to pump water, the water flow passes through the pre-filter screen 9 to filter out large particles of sand, water plants and other impurities, the pre-filtered water passes through the filter screen cylinder 7 again to be filtered, the mud and sand in the water are filtered out of the filter screen cylinder 7, and the remaining water flow is pumped into the water pump through the water inlet pipe 2, the water flow drives the transmission blades 4 to rotate in the process of flowing in the water inlet pipe 2, the transmission blades 4 drive the rotating shaft 3 to rotate, the rotating shaft 3 drives the connecting sleeve 19 to rotate, the connecting sleeve 19 drives the two first brush plates 6 through the connecting plate 5 to clean the outer wall of the filter screen cylinder 7, at the same time, the rotating shaft 3 drives the second brush plate 11 through the fixing cylinder 10 to clean the pre-filter screen 9, so as to prevent the pre-filter screen 9 and the filter screen cylinder 7 from being blocked, and the self-cleaning can be realized during work, which saves time and effort.

[0026] When the device needs to be disassembled and maintained, the limiting nut is rotated to be screwed out of the stud 13, the second brush plate 11 is poked to drive the fixing cylinder 10 to rotate, the fixing cylinder 10 is screwed out of the stud 13, the first fixing bolt 21 is unscrewed, the limiting block 15 is pressed to make the limiting block 15 extend into the insertion slot 14, the limiting spring 16 is extruded to be compressed and deformed, the pre-filtering screen 9 is pulled downward, the second rotating hole slides downward along the outer wall of the rotating shaft 3, the pre-filtering screen 9 is separated from the rotating shaft 3, the second fixing bolt 20 is screwed, the second fixing bolt 20 is screwed out of the second fixing hole, the connecting sleeve 19 is pulled to slide downward along the outer wall of the rotating shaft 3, the connecting sleeve 19, the connecting plate 5 and the first brush plate 6 are disassembled, the filtering screen cylinder 7 is screwed to rotate, the filtering screen cylinder 7 is separated from the lower end of the water inlet pipe 2, the filtering screen cylinder 7 is pulled to slide downward to be separated from the rotating shaft 3, and the device can be disassembled.

[0027] It should be noted that the relational terms herein such as first and second and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any such actual relationship or order between such entities or actions. Moreover, the terms "comprises", "comprising", or any other variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but can include other elements not expressly listed or inherent to such process, method, article, or apparatus.

[0028] Although the embodiments of the present application have been shown and described, it should be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made thereto without departing from the principles and spirit of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

[0029] The above describes the present application and its embodiments, which is not restrictive, and the drawings only show one of the embodiments of the present application, and the actual structure is not limited thereto. In general, if a person skilled in the art is inspired by it, without departing from the creative purpose of the present application, without creatively designing similar structural modes and embodiments of the technical scheme, they should all belong to the protection scope of the present application.

Claims

1. A sand prevention mechanism for a water pumping device for irrigation, comprising a sand prevention cover cylinder (1) provided with a water inlet at one end, characterized in that: a water inlet pipe (2) is fixedly connected to the end of the sand prevention cover cylinder (1) away from the water inlet, a filter screen cylinder (7) is detachably connected to the end of the water inlet pipe (2) extending into the sand prevention cover cylinder (1), an installation support (17) is fixedly connected in the water inlet pipe (2), a rotating shaft (3) is rotatably connected to the lower end of the installation support (17), a plurality of transmission blades (4) are fixedly connected to the outer wall of the rotating shaft (3) in an annular array, a first rotating hole is provided at the lower end center of the filter screen cylinder (7) and matched with the rotating shaft (3), a connecting sleeve (19) is sleeved on the outer wall of the rotating shaft (3) below the first rotating hole, a connecting plate (5) is fixedly connected to the outer wall of the connecting sleeve (19), and a first brush plate (6) is fixedly connected to both ends of the connecting plate (5) and matched with the filter screen cylinder (7). A pre-filter screen (9) is slidably inserted into the water inlet, an installation check ring (18) is fixedly connected in the sand prevention cover cylinder (1) and matched with the pre-filter screen (9), a first fixing bolt (21) is threadedly connected to the pre-filter screen (9), and a first fixing screw hole is provided on the installation check ring (18) and matched with the first fixing bolt (21).

2. A sand prevention mechanism for a pumping unit for irrigation according to claim 1, characterized in that: A second rotating hole is provided at the center of the pre-filter screen (9) and matched with the rotating shaft (3), a stud (13) is fixedly connected to the end of the rotating shaft (3), a fixing cylinder (10) is threadedly connected to the stud (13), and a second brush plate (11) is fixedly connected to one side of the fixing cylinder (10) and matched with the pre-filter screen (9).

3. A sand prevention mechanism for a pumping unit for irrigation according to claim 2, characterized in that: A limiting nut (12) is threadedly connected to the stud (13) below the fixing cylinder (10), an insertion slot (14) is provided on one side of the rotating shaft (3) between the second rotating hole and the fixing cylinder (10), a limiting block (15) is slidably inserted into the insertion slot (14), and a limiting spring (16) is fixedly connected in the insertion slot (14) and matched with the limiting block (15).

4. A sand prevention mechanism for a pumping unit for irrigation according to claim 3, characterized in that: An external thread is provided on the end of the water inlet pipe (2) extending into the sand prevention cover cylinder (1), and an internal thread cylinder (8) is fixedly connected to the upper end of the filter screen cylinder (7).

5. A sand prevention mechanism for a pumping unit for irrigation as claimed in claim 1, wherein: The connecting sleeve (19) is sleeved on the outer wall of the rotating shaft (3), a second fixing bolt (20) is threadedly connected to one side of the connecting sleeve (19), and a second fixing screw hole is provided on one side of the rotating shaft (3) and matched with the second fixing bolt (20).

6. A sand prevention mechanism for a pumping unit for irrigation as claimed in claim 1, wherein: ​

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