阅读说明：本技术 一种水泵及其水泵的制造方法 (Water pump and manufacturing method thereof ) 是由 沈然照 吴奥 于 2021-07-14 设计创作，主要内容包括：本发明涉及水泵技术领域,具体的说是一种水泵及其水泵的制造方法；包括柴油发动机；所述柴油发动机包括动力模块和水箱；所述水箱靠近水泵壳体的一侧固连有一号接口；所述水泵壳体上固连有二号接口；所述二号接口远离水泵壳体的一端固连有软管；本发明通过水箱内的水流入水泵壳体内,再与柴油机水泵开始工作时水泵壳体内的水流入水箱内相配合,从而达到水箱内的水排掉水泵壳体内空气的目的,使得柴油机水泵能够顺利启动,省去了人工往水泵内注水的步骤；同时水泵随时往水箱内补充水,使得工作人员减去了在水箱内水消耗掉后往水箱内加水的动作；减轻了工作人员的劳动强度,提升了水泵的工作效率,进而提升了本发明的实际使用效果。(The invention relates to the technical field of water pumps, in particular to a water pump and a manufacturing method thereof; including diesel engines; the diesel engine comprises a power module and a water tank; one side of the water tank close to the water pump shell is fixedly connected with a first interface; the water pump shell is fixedly connected with a second connector; one end of the second connector, which is far away from the water pump shell, is fixedly connected with a hose; according to the invention, water in the water tank flows into the water pump shell and then is matched with water in the water pump shell flowing into the water tank when the diesel engine water pump starts to work, so that the purpose that water in the water tank drains air in the water pump shell is achieved, the diesel engine water pump can be started smoothly, and the step of manually injecting water into the water pump is omitted; meanwhile, the water pump replenishes water into the water tank at any time, so that the action of adding water into the water tank after the water in the water tank is consumed is eliminated by a worker; the labor intensity of workers is reduced, the working efficiency of the water pump is improved, and the actual using effect of the water pump is further improved.)

1. A water pump comprises a push frame (1), a diesel engine (2), a water pump shell (3), a rotating shaft (31), a water inlet (32), a water outlet (33) and a transmission module (21); the diesel engine (2) comprises a power module (22) and a water tank (23); the method is characterized in that: one side of the water tank (23) close to the water pump shell (3) is fixedly connected with a first connector (24); the first connector (24) is communicated with the water tank (23), and a water valve (25) is arranged in the first connector (24); a second interface (34) is fixedly connected to the water pump shell (3); the second connector (34) is communicated with the interior of the water pump shell (3), and one end, far away from the water pump shell (3), of the second connector (34) is fixedly connected with a hose (35); the other end of the hose (35) is fixedly connected with the first connector (24).

2. A water pump as claimed in claim 1, wherein: a sliding block (26) and a fixed strip (27) are arranged in the water tank (23); two ends of the fixing strip (27) are fixedly connected with the upper end and the lower end of the water tank (23), and a sliding groove (28) is formed in the end face, close to the first connector (24), of the fixing strip (27); the sliding groove (28) penetrates through two ends of the fixing strip (27); the sliding block (26) is connected with the fixing strip (27) in a sliding mode through a sliding groove (28), one end, close to the first connector (24), of the sliding block (26) is in contact with the water tank (23), and the upper end of the sliding block (26) is fixedly connected with a pressing rod (29); the other end of the pressing rod (29) penetrates through the water tank (23) and is connected with the water tank (23) in a sliding mode, and the density of the pressing rod (29) and the sliding block (26) is smaller than that of water.

3. A water pump as claimed in claim 2, wherein: a filter block (4) is arranged in the water pump shell (3); the filter block (4) is arranged close to the second connector (34), the end face of the filter block (4) close to the second connector (34) is in contact with the water pump shell (3), and the filter block (4) is made of soft materials.

4. A water pump according to claim 3, wherein: the bottom of the water pump shell (3) is provided with a through hole (36); a piston (37) is connected with the through hole (36) through internal threads; the piston (37) can be screwed out of the through-opening (36).

5. A water pump according to claim 4, wherein: the rotating shaft (31) is rotatably connected with a connecting block (41); one end of the connecting block (41) far away from the rotating shaft (31) is fixedly connected with one end of the filtering block (4) far away from the through hole (36), and the density of the connecting block (41) is smaller than that of water; a stop block (42) is fixedly connected to the water pump shell (3); the stop block (42) can enable the filter block (4) to shield the second interface (34) when the filter block (4) is in contact with the stop block (42).

6. A method of manufacturing a water pump, which is applied to the water pump according to any one of claims 1 to 5, characterized in that: the manufacturing method comprises the following steps:

s1: when the water tank is manufactured, a worker firstly cuts the water tank (23), then a sliding strip (27) is welded in the water tank (23), a sliding block (26) and a pressing rod (29) are installed, then a water through valve (25) is installed on a first connector (24), then a hole is drilled in the water tank (23) of the diesel engine (2), and the first connector (24) is welded at the position of the hole of the water tank (23);

s2: the water pump shell (3), the rotating shaft (31), the water outlet (33) and the water inlet (32) are cast by workers, the water pump shell (3) is separately cast from the middle when the water pump shell (3) is cast, and each hole and the second connector (34) on the water pump shell (3) are simultaneously cast when the water pump shell (3) is cast; the worker welds the stop block (42) in the water pump shell (3), and then installs the rotating shaft (31) and the impeller;

s3: the worker adheres the connecting block (41) and the filter block (4) together, then sleeves the connecting block (41) on the rotating shaft (31), connects the separated water pump housings (3) into a whole through bolts, and then connects the water outlet (33) and the water inlet (32) on the water pump housings (3) through the bolts;

s4: the worker respectively sleeves the two ends of the hose (35) on the first connector (24) and the second connector (34), and then screws the piston (37) into the through hole (36) to complete the manufacture of the water pump.

Technical Field

The invention relates to the technical field of water pumps, in particular to a water pump and a manufacturing method of the water pump.

Background

The water pump is a machine for conveying liquid or pressurizing liquid; the energy-saving water-saving device transmits mechanical energy or other external energy of a prime motor to liquid to increase the energy of the liquid, is common water-saving equipment and is widely applied to various fields; the variety of water pumps is various, and the diesel engine water pump is one of the water pumps and is widely applied to agricultural irrigation; when the diesel engine water pump is used, air in the water pump must be discharged, the impeller can be contacted with water, the diesel engine water pump can convey water, otherwise, the impeller idles, such as a diesel engine horizontal centrifugal pump; therefore, when the diesel engine water pump is used, workers need to fill water into the water pump to discharge part of air in the diesel engine water pump, the diesel engine water pump can work, and the workers also need to carry tools to fill water into the diesel engine water pump, so that the operation is very inconvenient; meanwhile, water in a water tank of the diesel engine in a water pump of the diesel engine can be consumed when the diesel engine is cooled, and workers need to supplement the water in the water tank, so that the labor intensity of workers is increased, time and labor are wasted, and the working efficiency of the water pump is influenced.

The Chinese patent with the application number of CN201820548356.2 discloses a diesel water pump with a self-service water supply function for a water tank, which structurally comprises a diesel engine body and a pump body, wherein the diesel engine body and the pump body are respectively provided with a driving wheel and a driven wheel which are connected through a belt, the diesel engine body is provided with an oil tank and a water tank, the pump body is provided with a water pumping pipe and a water outlet pipe, the water outlet pipe of the pump body is provided with a water outlet branch pipe, the water outlet branch pipe is connected with the water tank through a connecting hose, and the water outlet branch pipe is respectively provided with a filter screen and a valve; the diesel water pump with the self-service water supply function for the water tank has the advantages that the problem that the water pump needs to be prevented from being burnt out due to continuous manual water supply in the working process of the diesel water pump is solved, manual water supply is not needed, manual waste is reduced, the risk of burning out of the water pump is reduced, and the like, so that the diesel water pump has good popularization and application values; but this technical scheme does not solve before the water pump work staff toward the problem of adding water in the water pump, influences the work efficiency of water pump, and this technical scheme does not clear up the water pump inside simultaneously and makes impeller and axis of rotation fragile, and then causes the limitation of this scheme.

In view of this, in order to overcome the above technical problems, the present invention provides a water pump and a manufacturing method thereof, which solves the above technical problems.

Disclosure of Invention

In order to make up the defects of the prior art, the water in the water tank flows into the water pump shell and then is matched with the water in the water pump shell flowing into the water tank when the diesel engine water pump starts to work, so that the aim of discharging air in the water pump shell by the water in the water tank is fulfilled, the diesel engine water pump can be started smoothly, and the step of manually injecting water into the water pump is omitted; meanwhile, the water pump replenishes water into the water tank at any time, so that the action of adding water into the water tank after the water in the water tank is consumed is eliminated by a worker; the labor intensity of workers is reduced, the working efficiency of the water pump is improved, and the actual using effect of the water pump is further improved.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to a water pump which comprises a push frame, a diesel engine, a water pump shell, a rotating shaft, a water inlet, a water outlet and a transmission module, wherein the push frame is arranged on the shell; the diesel engine comprises a power module and a water tank; one side of the water tank close to the water pump shell is fixedly connected with a first interface; the first connector is communicated with the water tank, and a water through valve is arranged in the first connector; the water pump shell is fixedly connected with a second connector; the second interface is communicated with the interior of the water pump shell, and one end of the second interface, which is far away from the water pump shell, is fixedly connected with a hose; the other end of the hose is fixedly connected with the first connector;

when the diesel engine water pump works, air in the water pump must be discharged when the diesel engine water pump is used, the impeller can be in contact with water, the diesel engine water pump can convey water, otherwise, the impeller idles, such as a diesel engine horizontal centrifugal pump; therefore, when the diesel engine water pump is used, workers need to fill water into the water pump to discharge part of air in the diesel engine water pump, the diesel engine water pump can work, and the workers also need to carry tools to fill water into the diesel engine water pump, so that the operation is very inconvenient; meanwhile, water in a water tank of the diesel engine in a water pump of the diesel engine is consumed when the diesel engine is cooled, and workers need to supplement the water in the water tank, so that the labor intensity of workers is increased, time and labor are wasted, and the working efficiency of the water pump is influenced;

therefore, when the water-saving irrigation device is used by a worker, the water-saving irrigation device is moved to the side of a water source, the water inlet is connected with the water pipe, the water pipe is placed into the water source, the water outlet is communicated with the other water pipe, and the other end of the water pipe is placed at a place needing irrigation; then, a worker opens a water valve, so that water in the diesel engine water tank flows through the first connector, the hose and the second connector in sequence and finally flows into the water pump shell, the space inside the water pump shell is filled with the water continuously, the worker starts the diesel engine after the water in the water pump submerges the water outlet, and the diesel engine water pump starts to work; when the water pump of the diesel engine works, the pressure of water in the water pump shell is higher than that of water in the water tank, so that the water in the water pump shell flows into the water tank along the second connector, the hose and the first connector to supplement the water in the water tank, and the diesel engine is prevented from being damaged due to insufficient water in the water tank; after the diesel engine water pump finishes working, a worker closes the water through valve;

according to the invention, water in the water tank flows into the water pump shell and then is matched with water in the water pump shell flowing into the water tank when the diesel engine water pump starts to work, so that the purpose that water in the water tank drains air in the water pump shell is achieved, the diesel engine water pump can be started smoothly, and the step of manually injecting water into the water pump is omitted; meanwhile, the water pump replenishes water into the water tank at any time, so that the action of adding water into the water tank after the water in the water tank is consumed is eliminated by a worker; the labor intensity of workers is reduced, the working efficiency of the water pump is improved, and the actual using effect of the water pump is further improved.

Preferably, a sliding block and a fixing strip are arranged in the water tank; two ends of the fixing strip are fixedly connected with the upper end and the lower end of the water tank, and a sliding groove is formed in the end face, close to the first connector, of the fixing strip; the sliding groove penetrates through two ends of the fixing strip; the sliding block is connected with the fixing strip in a sliding mode through the sliding groove, one end, close to the first connector, of the sliding block is in contact with the water tank, and the upper end of the sliding block is fixedly connected with the pressing rod; the other end of the pressing rod penetrates through the water tank and is in sliding connection with the water tank, the density of the pressing rod and the density of the sliding block are smaller than that of water, and the material of the pressing rod and the material of the sliding block are preferably plastic; the volume of one half of the water pump shell is smaller than that of one half of the water tank; the first interface is positioned at the half of the height of the water tank;

when the water tank is in work, the sliding block is suspended in the water tank under the action of self gravity and the action of gravity of the pressing rod, the first interface is blocked by the sliding block, and the first interface is not communicated with the water tank; the pressure rod is pressed by a worker, so that the pressure rod moves downwards along the sliding groove, the first connector is communicated with the inside of the water tank again, water in the water tank flows into the water pump shell through the first connector, the hose and the second connector, the diesel engine is started after one part of the impeller is immersed in the water, and the water level in the water tank is higher than the position of the first connector at the moment; the water level in the water tank is observed by a worker through an observation port on the water tank, the observation port is a water inlet of the water tank in the prior art, when water in the water pump shell is supplemented into the water tank, the water level in the water tank rises until the water tank is full, the buoyancy of the water in the water tank to the sliding block is increased, at the moment, the worker stops pressing the pressing rod, the sliding block slides upwards along the sliding groove until the sliding block plugs the first connector, and the water in the water pump shell does not enter the water tank; the water in the water tank is reduced because the diesel engine is cooled, so that the water level in the water tank is gradually reduced, and a worker judges the water level in the water tank by observing the length of the pressing rod exposed out of the water tank; when only half of the pressing rod is exposed out of the water tank, the water level in the water tank is close to the first connector, and a worker presses the pressing rod, so that water in the water pump shell is replenished into the water tank again until the water tank is full of water, the worker stops pressing the pressing rod, and the process is repeated;

according to the invention, the pressing rod is pressed by a worker, water in the water tank flows into the water pump shell, then enters the water tank together with the water in the water pump shell, and the sliding block blocks the first connector for matching, so that the purpose of adding water into the water tank only when the water quantity in the water tank is reduced is achieved, the water pump shell is enabled to add water into the water tank all the time, the situation that the water overflows out of the water tank after the water tank is filled with water is prevented, and the cleanness of the working environment is ensured; further preventing the worker from slipping due to the slippery ground during working, and improving the use effect of the invention.

Preferably, a filter block is arranged in the water pump shell; the filter block is arranged close to the second connector, the end face of the filter block close to the second connector is in contact with a water pump shell, the filter block is made of soft materials, and the filter block is preferably sponge;

when the water pump works, water in the water pump shell flows into the water tank through the second connector, the hose and the first connector after being filtered by the filter block, the filter block filters impurities such as silt and dry branches in the water, and the impurities such as the silt and the dry branches are driven by water flow in the water pump shell and discharged from the water outlet;

the filter block filters impurities such as silt, deadwood and the like in water flowing to the water tank, so that the cleanness of the water flowing into the water tank is ensured, the diesel engine cannot be damaged by the impurities such as the silt, the deadwood and the like, the service life of the diesel engine is prolonged, and the service life of the filter block is prolonged.

Preferably, the bottom of the water pump shell is provided with a through hole; a piston is connected in the through hole in a threaded manner; the piston can be screwed out of the through hole;

during working, agricultural irrigation is mostly water pumping irrigation beside ponds and rivers, and water pumped up by a water pump is generally mixed with silt when water in the ponds or rivers is about to be pumped out; after the water pump stops working, water mixed with silt remains in the water pump shell, a worker twists the piston, so that the piston is separated from the through hole, the water mixed with silt is discharged from the through hole, and the worker screws the piston into the through hole after the water in the water pump shell is discharged; the residual water in the water pump shell is discharged, so that the cleanness of the interior of the water pump shell is ensured, the condition that silt is attached to the impeller and the rotating shaft to cause corrosion of the impeller and the rotating shaft is prevented, and the service life of the water pump shell is prolonged.

Preferably, the rotating shaft is rotatably connected with a connecting block; one end of the connecting block, which is far away from the rotating shaft, is fixedly connected with one end of the filtering block, which is far away from the through hole, and the density of the connecting block is smaller than that of water; the water pump shell is fixedly connected with a stop block; the stop block can enable the filter block to shield the second interface when the filter block is contacted with the stop block;

when the water pump works, the rotating shaft drives the impeller to rotate, the impeller stirs water in the water pump shell, so that the water in the water pump shell rotates around the rotating shaft and is finally discharged from the water outlet; when the water flow rotates, the connecting block is stirred by the water flow, so that the connecting block drives the filter block to rotate together, the filter block is blocked by the stop block after rotating for a certain distance, the second connector is blocked by the filter block at the moment, and the water flowing into the water tank in the water pump shell is filtered by the filter block; when a worker takes out the piston from the through hole, the connecting block floats on the water surface together with the filter block under the action of the buoyancy of water, the water level descends along with the fact that water and silt do not flow out of the through hole, the connecting rod drives the filter block to rotate downwards, the filter block scrapes off the silt attached to the inner wall of the water pump shell, the silt attached to the water pump shell is discharged from the through hole, the cleanness of the inside of the water pump shell is further improved, the impeller is prevented from being corroded by the silt, and the service life of the water pump is further prolonged.

A manufacturing method of the water pump is suitable for the water pump, and comprises the following steps:

s1: when the water tank is manufactured, a worker firstly cuts the water tank, then the fixing strip is welded in the water tank, the sliding block and the pressing rod are installed, then the water through valve is installed on the first connector, then a hole is drilled in the water tank of the diesel engine, and the first connector is welded on the position of the hole of the water tank;

s2: the water pump shell, the rotating shaft, the water outlet and the water inlet are cast by workers, the water pump shell is separately cast from the middle when the water pump shell is cast, and holes and a second interface on the water pump shell are simultaneously cast when the water pump shell is cast; the worker welds the stop block in the water pump shell and then installs the rotating shaft and the impeller;

s3: the worker sticks the connecting block and the filter block together, then sleeves the connecting block on the rotating shaft, connects the separated water pump housings into a whole through bolts, and then connects the water outlet and the water inlet on the water pump housings through bolts;

s4: the staff overlaps the both ends of hose on No. one interface and No. two interfaces respectively, screws into the through-hole with the piston again, accomplishes the manufacturing of water pump.

The invention has the following beneficial effects:

1. according to the invention, the water pump flows into the water pump shell through the water in the water tank and then is matched with the water in the water pump shell flowing into the water tank when the diesel engine water pump starts to work, so that the aim of discharging the water in the water tank to the air in the water pump shell is fulfilled, the diesel engine water pump can be started smoothly, and the step of manually injecting water into the water pump is omitted; meanwhile, the water pump replenishes water into the water tank at any time, so that the action of adding water into the water tank after the water in the water tank is consumed is eliminated by a worker; the labor intensity of workers is reduced, and the practical use effect of the invention is improved.

2. According to the water pump, the pressing rod is pressed by a worker, water in the water tank flows into the water pump shell, then enters the water tank together with the water in the water pump shell, and the sliding block blocks the first connector for matching, so that the purpose of adding water into the water tank only when the water quantity in the water tank is reduced is achieved, the water pump shell is enabled to add water into the water tank all the time, the situation that the water overflows out of the water tank after the water tank is filled with water is prevented, and the cleanness of the working environment is guaranteed; the use effect of the invention is improved.

3. The water pump filters impurities such as silt, deadwood and the like in water flowing to the water tank through the filter block, so that the cleanness of the water flowing into the water tank is ensured, the diesel engine cannot be damaged by the impurities such as the silt, the deadwood and the like, the service life of the diesel engine is prolonged, and the service life of the water pump is prolonged.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a perspective view of the water pump of the present invention;

FIG. 2 is a partial cross-sectional view of the water pump of the present invention;

FIG. 3 is a cross-sectional view taken at A-A of FIG. 2;

FIG. 4 is a flow chart of a method of manufacturing the water pump of the present invention;

in the figure: 1. pushing the frame; 2. a diesel engine; 3. a water pump housing; 31. a rotating shaft; 32. a water inlet; 33. a water outlet; 21. a transmission module; 22. a power module; 23. a water tank; 24. an interface I; 25. a water valve; 34. a second interface; 35. a hose; 26. a slider; 27. a fixing strip; 28. a sliding groove; 29. a pressing lever; 36. a through hole; 37. a piston; 4. a filter block; 41. connecting blocks; 42. and a stop block.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the water pump of the present invention includes a pushing frame 1, a diesel engine 2, a water pump housing 3, a rotating shaft 31, a water inlet 32, a water outlet 33 and a transmission module 21; the diesel engine 2 comprises a power module 22 and a water tank 23; one side of the water tank 23 close to the water pump shell 3 is fixedly connected with a first connector 24; the first connector 24 is communicated with the water tank 23, and a water through valve 25 is arranged in the first connector 24; the water pump shell 3 is fixedly connected with a second connector 34; the second connector 34 is communicated with the inside of the water pump shell 3, and one end of the second connector 34, which is far away from the water pump shell 3, is fixedly connected with a hose 35; the other end of the hose 35 is fixedly connected with the first connector 24;

when the diesel engine water pump works, air in the water pump must be discharged when the diesel engine water pump is used, the impeller can be in contact with water, the diesel engine water pump can convey water, otherwise, the impeller idles, such as a diesel engine horizontal centrifugal pump; therefore, when the diesel engine water pump is used, workers need to fill water into the water pump to discharge part of air in the diesel engine water pump, the diesel engine water pump can work, and the workers also need to carry tools to fill water into the diesel engine water pump, so that the operation is very inconvenient; meanwhile, water in the diesel engine water tank 23 in the diesel engine water pump is consumed when the diesel engine is cooled, and workers need to supplement the water in the water tank 23, so that the labor intensity of workers is increased, time and labor are wasted, and the working efficiency of the water pump is influenced;

therefore, when the water-saving irrigation device is used by a worker, the water-saving irrigation device is moved to the side of a water source, the water inlet 32 is connected with the water pipe, the water pipe is placed in the water source, the water outlet 33 is communicated with the other water pipe, and the other end of the water pipe is placed at a place needing irrigation; then, the worker opens the water valve 25, so that the water in the diesel engine water tank 23 flows through the first connector 24, the hose 35 and the second connector 34 in sequence, finally flows into the water pump housing 3, the space in the water pump housing 3 is filled with the water continuously, the worker starts the diesel engine after the water in the water pump submerges the water outlet 33, and the diesel engine water pump starts to work; when the diesel engine water pump works, the pressure of water in the water pump shell 3 is higher than that of water in the water tank 23, so that the water in the water pump shell 3 can flow into the water tank 23 along the second connector 34, the hose 35 and the first connector 24 to supplement the water in the water tank 23, and the diesel engine is prevented from being damaged due to insufficient water in the water tank 23; after the diesel engine water pump finishes working, the staff closes the water valve 25;

according to the invention, water in the water tank 23 flows into the water pump shell 3 and then is matched with water in the water pump shell 3 flowing into the water tank 23 when the diesel engine water pump starts to work, so that the aim of discharging air in the water pump shell 3 by the water in the water tank 23 is fulfilled, the diesel engine water pump can be started smoothly, and the step of manually injecting water into the water pump is omitted; meanwhile, the water pump replenishes water into the water tank 23 at any time, so that the worker subtracts the action of adding water into the water tank 23 after the water in the water tank 23 is consumed; the labor intensity of workers is reduced, the working efficiency of the water pump is improved, and the actual using effect of the water pump is further improved.

As an embodiment of the present invention, a sliding block 26 and a fixing strip 27 are provided in the water tank 23; two ends of the fixing strip 27 are fixedly connected with the upper end and the lower end of the water tank 23, and a sliding groove 28 is formed in the end face, close to the first connector 24, of the fixing strip 27; the sliding groove 28 penetrates through two ends of the fixing strip 27; the sliding block 26 is connected with the fixing strip 27 in a sliding mode through a sliding groove 28, one end, close to the first connector 24, of the sliding block 26 is in contact with the water tank 23, and the upper end of the sliding block 26 is fixedly connected with a pressing rod 29; the other end of the pressing rod 29 penetrates through the water tank 23 and is connected with the water tank 23 in a sliding mode, the density of the pressing rod 29 and the sliding block 26 is smaller than that of water, and the material of the pressing rod 29 and the sliding block 26 is preferably plastic; half of the volume of the water pump shell 3 is smaller than half of the volume of the water tank 23; the first connector 24 is positioned at the half height of the water tank 23;

when the water tank is in work, the sliding block 26 is suspended in the water tank 23 under the action of the self gravity and the gravity of the pressing rod 29, the first interface 24 is blocked by the sliding block 26, and the first interface 24 is not communicated with the water tank 23; the operator presses the pressing rod 29, so that the pressing rod 29 moves downwards along the sliding groove 28, the first connector 24 is communicated with the inside of the water tank 23 again, water in the water tank 23 flows into the water pump shell 3 through the first connector 24, the hose 35 and the second connector 34, and the diesel engine is started after a part of the impeller is immersed in the water, wherein the water level in the water tank 23 is higher than the position of the first connector 24; when water in the water pump housing 3 is replenished into the water tank 23, the water level in the water tank 23 rises until the water tank 23 is filled, the buoyancy of the water in the water tank 23 on the sliding block 26 is increased, and at the moment, the worker stops pressing the pressing rod 29, so that the sliding block 26 slides upwards along the sliding groove 28 until the sliding block 26 blocks the first connector 24, and the water in the water pump housing 3 does not enter the water tank 23; the water in the water tank 23 is reduced by cooling the diesel engine, so that the water level in the water tank 23 gradually decreases, and the operator judges the water level in the water tank 23 by observing the length of the pressing rod 29 exposed out of the water tank 23; when only half of the pressing rod 29 is exposed out of the water tank 23, the water level in the water tank 23 is close to the first connector 24, and the worker presses the pressing rod 29, so that the water in the water pump shell 3 is replenished into the water tank 23 again until the water tank 23 is full of water, and the worker stops pressing the pressing rod 29, thus the cycle is repeated;

according to the invention, by pressing the pressing rod 29 by a worker, water in the water tank 23 flows into the water pump shell 3 and then enters the water tank 23 together with water in the water pump shell 3, and the sliding block 26 blocks the first connector 24 again to be matched with the first connector, so that the purpose of adding water into the water tank 23 only when the water quantity in the water tank 23 is reduced is achieved, the water pump shell 3 is enabled to always add water into the water tank 23, the situation that the water overflows out of the water tank 23 after the water tank 23 is filled with water is prevented, and the cleanness of the working environment of the water pump is ensured; further preventing the worker from slipping due to the slippery ground during working, and improving the use effect of the invention.

As an embodiment of the present invention, a filter block 4 is disposed in the water pump housing 3; the filter block 4 is arranged close to the second connector 34, the end face of the filter block 4 close to the second connector 34 is in contact with the water pump shell 3, the filter block 4 is made of soft materials, and the filter block 4 is preferably made of sponge;

when the water pump works, water in the water pump shell 3 flows into the water tank 23 after being filtered by the filter block 4 through the second connector 34, the hose 35 and the first connector 24, the filter block 4 filters impurities such as silt and deadwood in the water, and the impurities such as the silt and the deadwood are driven by water flow in the water pump shell 3 and are discharged from the water outlet 33;

according to the invention, impurities such as silt and deadwood in the water flowing to the water tank 23 are filtered by the filter block 4, so that the cleanness of the water flowing into the water tank 23 is ensured, the diesel engine 2 is not damaged by the impurities such as silt and deadwood, the service life of the diesel engine 2 is prolonged, and the service life of the diesel engine is prolonged.

As an embodiment of the present invention, the bottom of the water pump housing 3 is provided with a through hole 36; a piston 37 is connected with the through hole 36 in a threaded manner; the piston 37 can be screwed out of the through hole 36;

during working, agricultural irrigation is mostly water pumping irrigation beside ponds and rivers, and water pumped up by a water pump is generally mixed with silt when water in the ponds or rivers is about to be pumped out; after the water pump stops working, water mixed with silt remains in the water pump shell 3, a worker twists the piston 37, so that the piston 37 is separated from the through hole 36, the water mixed with silt is discharged from the through hole 36, and the worker twists the piston 37 into the through hole 36 after the water in the water pump shell 3 is discharged; the residual water in the water pump shell 3 is discharged, so that the cleanness of the interior of the water pump shell 3 is ensured, the condition that the impeller and the rotating shaft 31 are corroded due to the fact that silt is attached to the impeller and the rotating shaft 31 is prevented, and the service life of the water pump is prolonged.

As an embodiment of the present invention, a connecting block 41 is rotatably connected to the rotating shaft 31; one end of the connecting block 41, which is far away from the rotating shaft 31, is fixedly connected with one end of the filter block 4, which is far away from the through hole 36, and the density of the connecting block 41 is smaller than that of water; the water pump shell 3 is fixedly connected with a stop block 42; the stop block 42 can enable the filter block 4 to shield the interface II 34 when the filter block 4 is contacted with the stop block 42;

when the water pump works, the rotating shaft 31 drives the impeller to rotate, the impeller stirs water in the water pump shell 3, so that the water in the water pump shell 3 rotates around the rotating shaft 31 and is finally discharged from the water outlet 33; when the water flow rotates, the connecting block 41 is stirred by the water flow, so that the connecting block 41 drives the filter block 4 to rotate together, the filter block 4 rotates for a certain distance and is blocked by the blocking block 42, at the moment, the second connector 34 is blocked by the filter block 4, and the water flowing into the water tank 23 in the water pump shell 3 is filtered by the filter block 4; when a worker takes out the piston 37 from the through hole 36, the connecting block 41 floats on the water surface together with the filter block 4 under the action of the buoyancy of water, the water level drops along with the water and the silt continuously flowing out of the through hole 36, the filter block 4 is driven by the connecting rod to rotate downwards, the filter block 4 scrapes off the silt attached to the inner wall of the water pump shell 3, the silt attached to the water pump shell 3 is discharged from the through hole 36, the cleanness inside the water pump shell 3 is further improved, silt corrosion to the impeller is reduced, and the service life of the water pump is further prolonged.

A manufacturing method of the water pump is suitable for the water pump, and comprises the following steps:

s1: when the working personnel manufacture the invention, firstly the water tank 23 is cut open, then the fixed strip 27 is welded in the water tank 23, the sliding block 26 and the pressing rod 29 are installed, then the water through valve 25 is installed on the first interface 24, then a hole is drilled on the water tank 23 of the diesel engine 2, and the first interface 24 is welded on the position of the hole of the water tank 23;

s2: the water pump shell 3, the rotating shaft 31, the water outlet 33 and the water inlet 32 are cast by workers, the water pump shell 3 is separately cast from the middle when the water pump shell 3 is cast, and each hole and the second connector 34 on the water pump shell 3 are simultaneously cast when the water pump shell 3 is cast; the worker welds the stopper 42 in the water pump housing 3 and then installs the rotating shaft 31 and the impeller;

s3: the worker sticks the connecting block 41 and the filter block 4 together, then sleeves the connecting block 41 on the rotating shaft 31, connects the separated water pump housings 3 into a whole through bolts, and then connects the water outlet 33 and the water inlet 32 on the water pump housings 3 through bolts;

s4: the worker respectively sleeves the two ends of the hose 35 on the first connector 24 and the second connector 34, and then screws the piston 37 into the through hole 36 to complete the manufacture of the water pump.

The specific working process is as follows:

when the water-saving irrigation device is used by a worker, the water-saving irrigation device is moved to the side of a water source, the water inlet 32 is connected with a water pipe, the water pipe is placed in the water source, the water outlet 33 is communicated with another water pipe, and the other end of the water pipe is placed at a place needing irrigation; then, the worker opens the water valve 25, so that the water in the diesel engine water tank 23 flows through the first connector 24, the hose 35 and the second connector 34 in sequence, finally flows into the water pump housing 3, the space in the water pump housing 3 is filled with the water continuously, the worker starts the diesel engine after the water in the water pump submerges the water outlet 33, and the diesel engine water pump starts to work; when the diesel engine water pump works, the pressure of water in the water pump shell 3 is higher than that of water in the water tank 23, so that the water in the water pump shell 3 can flow into the water tank 23 along the second connector 34, the hose 35 and the first connector 24 to supplement the water in the water tank 23, and the diesel engine is prevented from being damaged due to insufficient water in the water tank 23; after the diesel engine water pump finishes working, the staff closes the water valve 25; the sliding block 26 is suspended in the water tank 23 under the action of the self gravity and the gravity of the pressing rod 29, at the moment, the first interface 24 is blocked by the sliding block 26, and the first interface 24 is not communicated with the water tank 23; the operator presses the pressing rod 29, so that the pressing rod 29 moves downwards along the sliding groove 28, the first connector 24 is communicated with the inside of the water tank 23 again, water in the water tank 23 flows into the water pump shell 3 through the first connector 24, the hose 35 and the second connector 34, and the diesel engine is started after a part of the impeller is immersed in the water, wherein the water level in the water tank 23 is higher than the position of the first connector 24; when water in the water pump housing 3 is replenished into the water tank 23, the water level in the water tank 23 rises until the water tank 23 is filled, the buoyancy of the water in the water tank 23 on the sliding block 26 is increased, and at the moment, the worker stops pressing the pressing rod 29, so that the sliding block 26 slides upwards along the sliding groove 28 until the sliding block 26 blocks the first connector 24, and the water in the water pump housing 3 does not enter the water tank 23; the water in the water tank 23 is reduced by cooling the diesel engine, so that the water level in the water tank 23 gradually decreases, and the operator judges the water level in the water tank 23 by observing the length of the pressing rod 29 exposed out of the water tank 23; when only half of the pressing rod 29 is exposed out of the water tank 23, the water level in the water tank 23 is close to the first connector 24, and the worker presses the pressing rod 29, so that the water in the water pump shell 3 is replenished into the water tank 23 again until the water tank 23 is full of water, and the worker stops pressing the pressing rod 29, thus the cycle is repeated; the water in the water pump shell 3 flows into the water tank 23 after being filtered by the filter block 4 through the second connector 34, the hose 35 and the first connector 24, the filter block 4 filters impurities such as silt and deadwood in the water, and the impurities such as the silt and the deadwood are driven by the water flow in the water pump shell 3 and are discharged from the water outlet 33; the agricultural irrigation is mostly water pumping irrigation beside ponds and rivers, and water pumped by a water pump is generally mixed with silt when the water in the ponds or rivers is about to be pumped out; after the water pump stops working, water mixed with silt remains in the water pump shell 3, a worker twists the piston 37, so that the piston 37 is separated from the through hole 36, the water mixed with silt is discharged from the through hole 36, and the worker twists the piston 37 into the through hole 36 after the water in the water pump shell 3 is discharged; residual water in the water pump shell 3 is discharged, so that the cleanness of the interior of the water pump shell 3 is ensured, the condition that silt is attached to the impeller and the rotating shaft 31 to cause corrosion of the impeller and the rotating shaft 31 is prevented, and the service life of the water pump is prolonged; the rotating shaft 31 drives the impeller to rotate, the impeller stirs water in the water pump shell 3, so that the water in the water pump shell 3 rotates around the rotating shaft 31 and is finally discharged from the water outlet 33; when the water flow rotates, the connecting block 41 is stirred by the water flow, so that the connecting block 41 drives the filter block 4 to rotate together, the filter block 4 rotates for a certain distance and is blocked by the blocking block 42, at the moment, the second connector 34 is blocked by the filter block 4, and the water flowing into the water tank 23 in the water pump shell 3 is filtered by the filter block 4; when a worker takes out the piston 37 from the through hole 36, the connecting block 41 floats on the water surface together with the filter block 4 under the action of the buoyancy of water, the water level drops along with the water and the silt continuously flowing out of the through hole 36, the filter block 4 is driven by the connecting rod to rotate downwards, the filter block 4 scrapes off the silt attached to the inner wall of the water pump shell 3, the silt attached to the water pump shell 3 is discharged from the through hole 36, the cleanness inside the water pump shell 3 is further improved, silt corrosion to the impeller is reduced, and the service life of the water pump is further prolonged.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.