Large axial flow pump with filtering and impurity removing functions

Abstract

The large axial flow pump with the filtering and impurity removing functions comprises a pump shell, a filtering unit, a water pump rotating shaft and a driving motor for driving the water pump rotating shaft, the pump shell comprises a water inlet pipe, a water outlet pipe and a connecting bent pipe, and the filtering unit is installed in the water inlet pipe; a rotating wheel is installed at the position of the water pump rotating shaft, rotating blades are fixed to the rotating wheel, and a fixed flow guide plate is further installed at the position of the water inlet pipe. A filtering unit of the axial flow pump can ascend and descend, the axial flow pump is provided with a cutting knife, and the axial flow pump can be switched between a filtering state and a cutting state. According to the axial flow pump, impurities can be well filtered in the pumping process, and the impurities at the filtering unit can be effectively cleaned away well.

Description

Technical Field

[0001] The present application relates to the field of water pumps, and in particular to a large axial flow pump with filtering and impurity removal functions. Background Art

[0002] Axial flow pumps are widely used in agricultural and water regulation fields due to their simple structure. Although the head is short during pumping, the pumping volume is very large. The connection method of the water inlet pipe, water outlet pipe and connecting elbow is simple, and the water inlet pipe can be set to a larger diameter. However, since axial flow pumps are used to pump water from rivers or irrigation canals, it is often mixed with domestic garbage or aquatic plants and other debris. If a filtering unit is not set, the inside of the water inlet pipe will often be entangled with debris after a period of use. Although most of the debris will be cut and pumped by the impeller, it will not have too much negative impact on the use of the axial flow pump. However, some strip-shaped debris such as aquatic plants are likely to be entangled on the pump shaft for a long time and cannot be cleaned. Over time, it will have an adverse effect on the use of the axial flow pump.

[0003] On the other hand, although some axial flow pumps are equipped with a filter unit similar to a filter screen, this filter unit cannot be cleaned and will become clogged after a period of use, greatly reducing the pumping efficiency of the axial flow pump. Manual work is often laborious and the cleaning effect is poor. Therefore, how to set up an axial flow pump that has a good filtering effect and is easy to clean has become an urgent problem in the field of axial flow pumps. Summary of the invention

[0004] Purpose of the invention: In order to achieve a better cleaning effect on the axial flow pump, the present application provides a large axial flow pump with filtering and impurity removal function.

[0005] Technical solution: An axial flow pump, comprising a pump casing, a filter unit, a water pump shaft and a drive motor for driving the water pump shaft, the pump casing comprising an inlet pipe, an outlet pipe and a connecting elbow, the filter unit being installed in the inlet pipe; a runner is installed at the water pump shaft, rotor blades are fixed at the runner, and a fixed guide plate is also installed at the water inlet pipe.

[0006] Preferably, a mounting seat is connected to the connecting elbow, the water pump shaft passes through the mounting seat, and a shaft bearing is connected between the water pump shaft and the mounting seat.

[0007] Preferably, the mounting seat and the connecting elbow are fixed by welding.

[0008] The mounting seat is mainly used to fix the installation position of the water pump shaft, ensuring that the water pump shaft rotates stably along the axis.

[0009] Preferably, the mounting seat is fixedly connected to a motor seat, and the driving motor is mounted on the motor seat.

[0010] Preferably, a shaft sealing unit is provided between the water pump shaft and the pump casing.

[0011] Preferably, the filter unit comprises an upper filter portion, the upper filter portion comprises an upper annular portion and a strip plate portion fixedly connected to the upper annular portion, the lower surface of the strip plate portion has a strip accommodating groove, the strip plate portion also has a strip through hole connected to the strip accommodating groove, the strip plate portion is connected to a limiting circular ring through two L-shaped frames, the limiting circular ring has a plurality of limiting grooves, a circular cylindrical lifting sleeve is passed through the limiting circular ring, the top end of the lifting sleeve has a top retaining ring, the bottom end has a bottom retaining ring, and the outer circumference of the lifting sleeve is There are multiple limiting convex ribs that cooperate with the limiting grooves, the lifting sleeve is connected to the cutting shaft through the lifting sleeve bearing, the top of the cutting shaft is installed with a triangular cone-shaped plug, and the bottom is connected to a strip cutting knife through a triangular transition connecting plate; multiple lifting sliders are fixed to the outer circumferential surface of the upper annular part, and the inner circumferential surface of the water inlet pipe has multiple strip slide grooves, each of which has a connecting hole connecting the strip slide groove and the outer circumferential surface of the water inlet pipe, and the connecting hole is connected to a fixed pulley, and each strip slide groove is also fixed with a A fixed abutment block capable of abutting the lifting slider, the fixed abutment block has a first through-hole, a tension spring is connected between the top of each strip slide groove and the corresponding lifting slider, each lifting slider is connected to a pull rope passing through the fixed pulley and the first through-hole and the connecting hole, a fixing ring is fixed to the water inlet pipe, the fixing ring has a plurality of second through-holes, each pull rope passes through one of the second through-holes, and each second through-hole is also equipped with a locking bolt capable of locking the relative position of the second through-hole and the pull rope; the water pump shaft The bottom end has a triangular cone-shaped slot; the filter unit can be in a filtering state and a cutting state. In the filtering state, all tension springs are at a first length, each lifting slider abuts against a corresponding fixed abutment block, the strip cutting knife is accommodated in the strip accommodating groove, the limiting ring abuts against the bottom end retaining ring, and the insert block is not inserted into the slot; in the cutting state, all tension springs are at a second length, the limiting ring abuts against the top end retaining ring, and the insert block is inserted into the slot, and the first length is greater than twice the second length.

[0012] Preferably, in the cutting state, the top end of the transition connecting plate is lower than the lower surface of the strip plate portion; in the filtering state, the transition connecting plate passes through the strip plate portion.

[0013] Preferably, the transition connecting plate has a triangular through hole.

[0014] Therefore, the provision of the triangular through holes can reduce the resistance of the transition connecting plate to rotation in water.

[0015] Preferably, both sides of the transition connecting plate are in an arc shape.

[0016] Preferably, the bottom end of the strip-shaped receiving groove has an arc-shaped chamfer.

[0017] Therefore, when the filter unit is lowered, the strip-shaped cutting knife can be easily rotated to the direction of the strip-shaped receiving groove and stored in the strip-shaped receiving groove.

[0018] Preferably, the outer diameter of the top retaining ring is equal to the outer diameter of the bottom retaining ring, and both are larger than the inner diameter of the limiting circular ring;

[0019] Preferably, there are two lifting sleeve bearings.

[0020] Therefore, the installation connection between the cutting shaft and the lifting sleeve is more stable.

[0021] Preferably, the top end of the strip-shaped slide groove is closed and the bottom end is open.

[0022] Preferably, the upper annular portion is connected to the lower annular portion via a plurality of connecting rods; the outer diameters of the upper annular portion and the lower annular portion are equal, and the outer diameter of the upper annular portion is equal to the inner diameter of the water inlet pipe.

[0023] Preferably, the fixing ring has a plurality of bolt grooves, and two locking bolts are installed in each bolt groove, and the ends of the locking bolts can abut against and lock the pull rope.

[0024] Two locking bolts ensure that the rope is locked more stably.

[0025] Preferably, an annular fixing plate located above the fixing ring is also fixed to the water inlet pipe, and a plurality of electric winding devices are installed on the annular fixing plate, and each pull rope is wound on one of the electric winding devices.

[0026] Therefore, the pull rope can be pulled electrically, so that the position change of the filter unit can be automatically controlled.

[0027] Preferably, the number of the electric winding device, the pull rope, the tension spring, the connecting hole, the strip slide groove, the first through hole and the second through hole are all 4.

[0028] Preferably, the upper filter portion comprises a plurality of radial blocking rods and a plurality of arc-shaped blocking rods, one end of each radial blocking rod is fixedly connected to the strip plate portion, and the other end is fixedly connected to the upper annular portion.

[0029] Preferably, a control unit and a wireless communication unit are further provided, and the drive motor, the wireless communication unit and all the electric winding devices are controlled by the control unit.

[0030] Therefore, in some cases, remote automated maintenance and control can be achieved.

[0031] Preferably, a control panel is also included.

[0032] Thus, both remote control and on-site control can be realized.

[0033] Beneficial effects: The axial flow pump of the present application has a better filtering effect, especially in rivers with more aquatic plants, and can regularly perform automated cutting operations, thereby solving the blockage problem of the water pump and ensuring the pumping effect of the water pump.

[0034] Furthermore, the filter structure of the water pump of the present application is simpler, but compared with the general filter structure, it has a better active cleaning effect, thereby more efficiently processing some easily entangled debris.

[0035] The water pump of the present application can switch between the filtering state and the cutting state to realize on-site operation, remote control, or programmed automatic execution, so that it is more convenient to use and suitable for various usage scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] Figure 1 It is a schematic diagram of an axial flow pump;

[0037] Figure 2 This is a first-person perspective diagram of an axial flow pump in filtering state;

[0038] Figure 3 It is a schematic diagram of the axial flow pump in the filtering state from the second perspective;

[0039] Figure 4 This is a schematic diagram of the axial flow pump from the first perspective in the cutting state;

[0040] Figure 5 This is a schematic diagram of the axial flow pump from the second perspective in the cutting state;

[0041] Figure 6 It is a first-person perspective schematic diagram of the separation of axial flow pump components;

[0042] Figure 7 This is an enlarged view of area A;

[0043] Figure 8 A schematic diagram showing the separation of the axial flow pump components from a second perspective;

[0044] Fig. 9 This is an enlarged view of area B.

[0045] in Figure 3-9 In order to illustrate the coordination between the internal filter unit and the water inlet pipe, only the coordination part between the water inlet pipe and the filter unit is drawn. DETAILED DESCRIPTION

[0046] Figure numerals: 1.1 water inlet pipe; 1.2 connecting elbow; 1.2.1 mounting seat; 1.3 water outlet pipe; 1.4 water inlet flange; 1.5 water outlet flange; 1.6 fixing ring; 1.6.1 bolt groove; 1.6.2 locking bolt; 1.6.3 second perforation; 1.7 annular fixing plate; 1.7.1 electric winding device; 1.8 strip slide groove; 1.8.1 fixed abutment block; 1.8.2 connecting hole; 1.8.3 fixed pulley; 1.8.4 pull rope; 1.8.5 tension spring; 1.8.6 first perforation; 2 water pump shaft; 2.1 slot; 3.1 upper ring 3.1.1 lifting slider; 3.1.2 strip plate; 3.1.3 arc blocking rod; 3.1.4 radial blocking rod; 3.1.5 strip through hole; 3.1.6 L-shaped frame; 3.1.7 limiting circular ring; 3.1.8 limiting groove; 3.1.9 strip receiving groove; 3.2 lower circular ring; 3.3 connecting rod; 4.1 strip cutting knife; 4.2 transition connecting plate; 4.2.1 triangular through hole; 4.3 cutting shaft; 4.4 lifting sleeve bearing; 4.5 lifting sleeve; 4.6 limiting convex rib; 4.7 bottom retaining ring; 4.8 top retaining ring; 4.9 plug-in block.

[0047] As shown in the figure, a large axial flow pump with filtering and impurity removal function includes a pump casing, a filter unit, a water pump shaft 2 and a drive motor (not shown) for driving the water pump shaft 2. The pump casing includes an inlet pipe 1.1, an outlet pipe 1.3 and a connecting elbow 1.2. The filter unit is installed in the inlet pipe 1.1. A runner is installed at the water pump shaft 2, and rotor blades are fixed at the runner. A fixed guide plate is also installed at the inlet pipe 1.1. The filter unit comprises an upper filter portion, which comprises an upper annular portion 3.1 and a strip plate portion 3.1.2 fixedly connected to the upper annular portion 3.1, wherein the lower surface of the strip plate portion 3.1.2 has a strip receiving groove 3.1.9, and the strip plate portion 3.1.2 also has a strip through hole 3.1.5 connected to the strip receiving groove 3.1.9, and the strip plate portion 3.1.2 is connected to a limiting ring 3.1.7 through two L-shaped frames 3.1.6, and the limiting ring 3.1.7 has a plurality of limiting grooves 3.1.8, and a ring-shaped cylindrical lifting sleeve 4.5 is inserted in the limiting ring 3.1.7, The top of the lifting sleeve 4.5 has a top retaining ring 4.8, and the bottom has a bottom retaining ring 4.7. The outer circumferential surface of the lifting sleeve 4.5 has a plurality of limiting convex ribs 4.6 that cooperate with the limiting grooves 3.1.8. The lifting sleeve 4.5 is connected to the cutting shaft 4.3 through the lifting sleeve shaft 4.4. The top of the cutting shaft 4.3 is installed with a triangular cone-shaped plug 4.9, and the bottom is connected with a strip cutting knife 4.1 through a triangular transition connecting plate 4.2; the outer circumferential surface of the upper annular portion 3.1 is fixed with a plurality of lifting sliders 3.1.1, and the inner circumferential surface of the water inlet pipe 1.1 has a plurality of strip slide grooves 1.8, each Each strip chute 1.8 has a connecting hole 1.8.2 connecting the strip chute 1.8 and the outer circumferential surface of the water inlet pipe 1.1, and a fixed pulley 1.8.3 is connected to the connecting hole 1.8.2. Each strip chute 1.8 is also fixed with a fixed abutment block 1.8.1 that can abut the lifting slider 3.1.1, and the fixed abutment block 1.8.1 has a first through hole 1.8.6. A tension spring 1.8.5 is connected between the top of each strip chute 1.8 and the corresponding lifting slider 3.1.1, and each lifting slider 3.1.1 is connected with a spring that passes through the fixed pulley 1.8.3 and passes through the The first through hole 1.8.6 and the pull rope 1.8.4 of the connecting hole 1.8.2, the water inlet pipe 1.1 is fixed with a fixing ring 1.6, the fixing ring 1.6 has a plurality of second through holes 1.6.3, each pull rope 1.8.4 passes through one of the second through holes 1.6.3, and each second through hole 1.6.3 is also equipped with a locking bolt 1.6.2 capable of locking the relative position of the second through hole 1.6.3 and the pull rope 1.8.4; the bottom end of the water pump shaft 2 has a triangular cone-shaped slot 2.1; the filter unit can be in a filtering state and a cutting state, in which all the tension springs 1.8.5 is in the first length, each lifting slider 3.1.1 abuts against the corresponding fixed abutment block 1.8.1, the strip cutting knife 4.1 is accommodated in the strip accommodation groove 3.1.9, the limiting ring 3.1.7 abuts against the bottom stop ring 4.7, and the insert block 4.9 is not inserted into the slot 2.1; in the cutting state, all the tension springs 1.8.5 are in the second length, the limiting ring 3.1.7 abuts against the top stop ring 4.8, and the insert block 4.9 is inserted into the slot 2.1, and the first length is greater than 2 times the second length. .

[0048] In the cutting state, the top of the transition connecting plate 4.2 is lower than the lower surface of the strip plate portion 3.1.2; in the filtering state, the transition connecting plate 4.2 passes through the strip through hole 3.1.5; the transition connecting plate 4.2 has a triangular through hole 4.2.1. The outer diameter of the top retaining ring 4.8 is equal to the outer diameter of the bottom retaining ring 4.7, and both are larger than the inner diameter of the limiting circular ring 3.1.7; there are two lifting sleeve bearings 4.4; the top of the strip slide groove 1.8 is closed and the bottom is open. The upper circular portion 3.1 is connected to the lower circular portion 3.2 through a plurality of connecting rods 3.3; the outer diameters of the upper circular portion 3.1 and the lower circular portion 3.2 are equal, and the outer diameter of the upper circular portion 3.1 is equal to the inner diameter of the water inlet pipe 1.1. The fixing ring 1.6 has a plurality of bolt grooves 1.6.1, and each bolt groove 1.6.1 is equipped with two locking bolts 1.6.2, and the end of the locking bolt 1.6.2 can abut against and lock the pull rope 1.8.4. The water inlet pipe 1.1 is also fixed with an annular fixing plate 1.7 located above the fixing ring 1.6, and the annular fixing plate 1.7 is equipped with a plurality of electric winding devices 1.7.1, and each pull rope 1.8.4 is wound on one of the electric winding devices 1.7.1. The number of the electric winding device 1.7.1, the pull rope 1.8.4, the tension spring 1.8.5, the connecting hole 1.8.2, the strip slide 1.8, the first through hole 1.8.6 and the second through hole 1.6.3 are all 4. It also has a control unit and a wireless communication unit, and the drive motor, the wireless communication unit and all the electric winding devices 1.7.1 are controlled by the control unit.

[0049] The axial flow pump of the present application is shown in the figure, and has a similar pumping structure to the conventional axial flow pump, except that a filter unit is installed at the water inlet pipe of the axial flow pump of the present application, and compared with the fixed filter unit, the filter unit of the present application is a filter unit that can be lifted and lowered. Under the conventional filtering state, the filter unit can be pulled to a lower position by a pull rope (in some embodiments, the pull rope can be pulled manually, and in some real-time examples, the pull rope can be pulled by an electric winding device), and the pull rope can be locked by a locking bolt. In some cases, for example, in order to achieve remote control, the locking bolt can be omitted, but the electric winding device itself can be locked. At this time, the cutting knife is accommodated in the strip receiving groove, so as to protect the cutting knife. And at this time, the filter unit is in a lower position. The water pump shaft can achieve pumping, but it will not drive the rotation of the cutting shaft, so that the filter unit filters the debris at the position of the filter unit.

[0050] When it is necessary to clean up debris, such as water plants, the electric winding device releases the rope, so that the filter unit rises under the reset of multiple tension springs, and the debris in the filter unit rises accordingly. At this time, the cutting unit actually rises a certain distance due to the limit ring abutting the top retaining ring, and the plug is inserted into the slot, but the strip cutting knife actually drops a certain distance relative to the filter unit itself and is located below the strip receiving groove. At this time, the rotating shaft of the water pump shaft will synchronously drive the rotation of the cutting shaft to cut and crush the debris, and the water pump is still in the pumping state at this time. After the debris is cut, it is pumped out. In some cases, the cutting can be reversed, or the two rotation directions can be performed alternately to obtain a better debris removal effect. In addition, the plug and the slot adopt a triangular cone structure, so that the plug can cooperate well with the slot in any direction when it rises. Similarly, by using the strip through hole and the triangular transition connecting plate, no matter what relative orientation the strip plate portion and the strip cutting knife are in, when the filter unit is lowered, the strip cutting knife can be well rotated by the strip through hole and finally stored in the strip receiving groove.

[0051] Although the present invention has been illustrated and described with respect to the preferred embodiments, it will be appreciated by those skilled in the art that various changes and modifications may be made to the present invention without departing from the scope of the present invention as defined by the claims.

Claims

1. A large axial flow pump with filtering and impurity removal function, characterized in that: It includes a pump casing, a filter unit, a water pump shaft and a driving motor for driving the water pump shaft. The pump casing includes a water inlet pipe, a water outlet pipe and a connecting elbow. The filter unit is installed in the water inlet pipe. A runner is installed at the water pump shaft, and rotor blades are fixed at the runner. A fixed guide plate is also installed at the water inlet pipe.

2. The large axial flow pump with filtering and impurity removal function according to claim 1 is characterized in that: The filter unit comprises an upper filter portion, the upper filter portion comprises an upper annular portion and a strip plate portion fixedly connected to the upper annular portion, the lower surface of the strip plate portion has a strip receiving groove, the strip plate portion also has a strip through hole connected to the strip receiving groove, the strip plate portion is connected to a limiting circular ring through two L-shaped frames, the limiting circular ring has a plurality of limiting grooves, a circular cylindrical lifting sleeve is passed through the limiting circular ring, the top end of the lifting sleeve has a top retaining ring, the bottom end has a bottom retaining ring, and the outer circumferential surface of the lifting sleeve has a plurality of The limiting convex rib cooperates with the limiting groove, the lifting sleeve is connected to the cutting shaft through the lifting sleeve bearing, the top of the cutting shaft is installed with a triangular cone-shaped plug, and the bottom is connected with a strip cutting knife through a triangular transition connecting plate; a plurality of lifting sliders are fixed to the outer circumferential surface of the upper annular part, and a plurality of strip slide grooves are provided on the inner circumferential surface of the water inlet pipe, each of which has a connecting hole connecting the strip slide groove and the outer circumferential surface of the water inlet pipe, and a fixed pulley is connected to the connecting hole, and each strip slide groove is also fixed with a A fixed abutment block connected to the lifting slider, the fixed abutment block has a first through-hole, a tension spring is connected between the top of each strip slide and the corresponding lifting slider, each lifting slider is connected to a pull rope passing through the fixed pulley and the first through-hole and the connecting hole, a fixing ring is fixed to the water inlet pipe, the fixing ring has a plurality of second through-holes, each pull rope passes through one of the second through-holes, and each second through-hole is also equipped with a locking bolt capable of locking the relative position of the second through-hole and the pull rope; the bottom of the water pump shaft The filter unit has a triangular cone-shaped slot at the end; the filter unit can be in a filtering state and a cutting state. In the filtering state, all the tension springs are at a first length, each lifting slider abuts against a corresponding fixed abutment block, the strip cutting knife is accommodated in the strip accommodating groove, the limiting ring abuts against the bottom end retaining ring, and the insert block is not inserted into the slot; in the cutting state, all the tension springs are at a second length, the limiting ring abuts against the top end retaining ring, and the insert block is inserted into the slot, and the first length is greater than twice the second length.

3. The large axial flow pump with filtering and impurity removal function according to claim 2 is characterized in that: In the cutting state, the top end of the transition connecting plate is lower than the lower surface of the strip plate portion; in the filtering state, the transition connecting plate passes through the strip through hole; and the transition connecting plate has a triangular through hole.

4. The large axial flow pump with filtering and impurity removal function according to claim 2 is characterized in that: The outer diameter of the top retaining ring is equal to the outer diameter of the bottom retaining ring, and both are larger than the inner diameter of the limiting circular ring; the lifting sleeve has two bearings; the top end of the strip slide is closed and the bottom end is open.

5. The large axial flow pump with filtering and impurity removal function according to claim 2 is characterized in that: The upper annular portion is connected to the lower annular portion via a plurality of connecting rods; the outer diameters of the upper annular portion and the lower annular portion are equal, and the outer diameter of the upper annular portion is equal to the inner diameter of the water inlet pipe.

6. The large axial flow pump with filtering and impurity removal function according to claim 2 is characterized in that: The fixing ring is provided with a plurality of bolt grooves, and two locking bolts are installed in each bolt groove. The ends of the locking bolts can abut against and lock the pull rope.

7. The large axial flow pump with filtering and impurity removal function according to claim 2 is characterized in that: An annular fixing plate located above the fixing ring is also fixed at the water inlet pipe, and a plurality of electric winding devices are installed at the annular fixing plate, and each pull rope is wound at one of the electric winding devices.

8. The large axial flow pump with filtering and impurity removal function according to claim 7 is characterized in that: The number of the electric winding device, the pull rope, the tension spring, the connecting hole, the strip slide groove, the first through hole and the second through hole are all four.

9. The large axial flow pump with filtering and impurity removal function according to claim 7 is characterized in that: It also has a control unit and a wireless communication unit, and the drive motor, the wireless communication unit and all the electric winding devices are controlled by the control unit.

10. The large axial flow pump with filtering and impurity removal function according to claim 2 is characterized in that: The upper filter portion comprises a plurality of radial blocking rods and a plurality of arc blocking rods, one end of each radial blocking rod is fixedly connected to the strip plate portion, and the other end is fixedly connected to the upper annular portion.

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