A combined deep well water pump with adjustable head

Abstract

The present invention discloses a combined deep-well water pump with adjustable head, which relates to the technical field of water pumps and comprises a base, wherein a first pump casing is sleeved on the base, the first pump casing and the base are detachably sealed, a motor is detachably arranged on the top of the base, a first connecting seat is detachably and sealably connected to the top of the first pump casing, a second connecting seat is arranged above the first connecting seat, a second pump casing is detachably arranged on the second connecting seat, an output shaft of the motor passes through the first connecting seat and the second connecting seat and extends into the second pump casing, a plurality of centrifugal impellers are linearly arranged in the second pump casing, the centrifugal impellers are fixed on the output shaft of the motor, a booster pump head is detachably arranged on the top of the second pump casing, and the disassembly of the deep-well water pump is increased by combining the structures of various components, so as to facilitate more detailed inspection and maintenance of the deep-well water pump.

Description

Technical Field

[0001] The invention relates to the technical field of water pumps, and in particular to a combined deep well water pump with adjustable lift. Background Art

[0002] Commonly used deep well water pumps are generally placed in deep wells at least 80 meters underground. Conventional deep well pumps use a metal long cylindrical shell, and the motor and impeller are installed in a shell. For example, CN202420840211.5 discloses a fully automatic variable frequency shielded intelligent permanent magnet deep well pump, including a shell; a pump body is installed inside the shell, the left end of the pump body is the water inlet end, and the right end of the pump body is the water outlet end; a flange seat is fixed inside the shell, a flow channel is connected to the inner wall of the flange seat, and a magnetic rotor is installed inside the flow channel. The outer wall of the flow channel is provided with a pressure sensor and a frequency converter heat sink, and the outer wall of the frequency converter heat sink is provided with a frequency converter mainboard and a magnetic sensor; the left side of the shell is connected with a filter, and the right side of the filter is connected with a sealing plate. This scheme has the function of adjusting the power of the pump body. When the water pressure is low, the power of the pump body is reduced to achieve the purpose of not stopping the machine. When the water pressure is high, the power of the pump body is increased or the pump body is shut down to ensure the working efficiency of the pump body, avoid damage to the pump body, and extend the service life of the pump body.

[0003] Although the above scheme has the above technical advantages, it installs the impeller and the motor in one casing, which is not conducive to the assembly and subsequent maintenance of the water pump. At the same time, the control of the head mainly depends on the motor speed control, which affects the depth range of the deep well pump. Therefore, we propose a combined deep well water pump with adjustable head to solve the above problems. Summary of the invention

[0004] The invention provides a combined deep well water pump with adjustable head, which solves the technical problems of the existing deep well water pump being inconvenient to disassemble, overhaul and maintain and having limited head.

[0005] To solve the above technical problems, the present invention provides a combined deep well water pump with adjustable head, including a base, a first pump casing is sleeved on the base, the first pump casing and the base are detachably sealed, a motor is detachably provided on the top of the base, a first connecting seat is detachably and sealingly connected to the top of the first pump casing, a second connecting seat is provided above the first connecting seat, a pipe sleeve is fixedly connected between the first connecting seat and the second connecting seat, a plurality of water inlet holes are opened on the pipe sleeve, the motor is located in the first pump casing and between the base and the first connecting seat, a second pump casing is detachably provided on the second connecting seat, the output shaft of the motor passes through the first connecting seat and the second connecting seat and extends into the second pump casing, a plurality of centrifugal impellers are linearly arranged in the second pump casing, the centrifugal impellers are fixed on the output shaft of the motor, and a booster pump head is detachably provided on the top of the second pump casing.

[0006] Preferably, a first sealing sleeve is arranged between the base and the first pump casing, and a plurality of threaded holes are opened circumferentially between the base and the bottom of the first pump casing, and first bolts are distributed on the plurality of threaded holes, and the first bolts fix the first pump casing to the base.

[0007] The above technical solution is adopted: a first sealing sleeve is arranged between the base and the first pump casing, a plurality of threaded holes are opened in the circumferential direction of the base and the bottom of the first pump casing, and first bolts are distributed on the plurality of threaded holes. The first bolts fix the first pump casing to the base, so as to facilitate disassembly between the first pump casing and the base.

[0008] Preferably, first positioning blocks are fixed on both sides of the base, first positioning grooves are opened on both sides of the inner wall of the bottom of the first pump housing, and the first positioning blocks are clamped in the first positioning grooves.

[0009] The above technical solution is adopted: a first positioning block is fixed on both sides of the base, and a first positioning groove is opened on both sides of the inner wall of the bottom of the first pump casing. The first positioning block is clamped in the first positioning groove, which is convenient for quick installation, so that the circumferential through holes in the bottom of the first pump casing and the threaded holes on the base can be quickly corresponded one by one, and then it is convenient to use the first bolt for quick tightening.

[0010] Preferably, a stabilizing groove is provided on the top of the base, a screw is fixed on the stabilizing groove, organic feet are welded at the four corners of the bottom of the motor, and through holes with the same size as the outer diameter of the screw are provided on the machine feet, the four machine feet are clamped in the corresponding stabilizing grooves, the screw is inserted in the through holes provided on the machine feet, a locking nut is provided on the screw, and an anti-loosening gasket is provided on the top of the machine foot, and the locking nut and the anti-loosening gasket jointly fix the motor to the base.

[0011] The above technical solution is adopted: a stabilizing groove is opened on the top of the base, a screw is fixed on the stabilizing groove, organic feet are welded at the four corners of the bottom of the motor, and through holes with the same size as the outer diameter of the screw are opened on the machine feet. The four machine feet are clamped in the corresponding stabilizing grooves, the screws are inserted in the through holes opened on the machine feet, locking nuts are provided on the screws, and anti-loosening washers are provided on the tops of the machine feet. The locking nuts and anti-loosening washers jointly fix the motor to the base. The advantage is that the four machine feet at the bottom of the motor are inserted into the stabilizing grooves, and then the machine feet are fixed by the locking nuts and anti-loosening washers, which can ensure that the motor maintains rotation stability when running at high speed and will not swing.

[0012] Preferably, a second sealing sleeve is arranged between the first connecting seat and the first pump casing, second positioning blocks are fixed on both sides of the first connecting seat, second positioning grooves are opened on both sides of the top inner wall of the first pump casing, the second positioning blocks are clamped in the second positioning grooves, and a plurality of second bolts are distributed on the top circumference of the first pump casing, and the second bolts fix the first pump casing to the first connecting seat.

[0013] The above technical solution is adopted: a second sealing sleeve is arranged between the first connecting seat and the first pump casing, second positioning blocks are fixed on both sides of the first connecting seat, second positioning grooves are opened on both sides of the top inner wall of the first pump casing, the second positioning blocks are clamped in the second positioning grooves, and a plurality of second bolts are distributed circumferentially on the top of the first pump casing. The second bolts fix the first pump casing and the first connecting seat, so as to facilitate disassembly between the first connecting seat and the first pump casing.

[0014] Preferably, the pipe sleeve and the first connecting seat are fixed by a third bolt, and the pipe sleeve and the second connecting seat are fixed by a fourth bolt, and the second connecting seat and the second pump casing are fixed by a sixth bolt.

[0015] The above technical solution is adopted: the pipe sleeve and the first connecting seat are fixed by the third bolt, the pipe sleeve and the second connecting seat are fixed by the fourth bolt, and the second connecting seat and the second pump casing are fixed by the sixth bolt, which facilitates the disassembly of the first connecting seat, the pipe sleeve and the second connecting seat.

[0016] Preferably, the lower end of the booster pump head is inserted into the top of the second pump casing and the two are sealed and connected, a fifth bolt is provided between the booster pump head and the second pump casing, and the booster pump head is fixedly connected by the fifth bolt, and the booster pump head is axially provided with a primary booster conical hole, a diffusion cavity and a secondary booster conical hole from bottom to top.

[0017] The above technical solution is adopted: the lower end of the booster pump head is inserted into the top of the second pump casing and the two are sealed and connected; a fifth bolt is arranged between the booster pump head and the second pump casing, and the booster pump head is fixedly connected by the fifth bolt; the booster pump head is provided with a first-level booster cone hole, a pressure expansion cavity and a second-level booster cone hole in the axial direction from bottom to top; when the water flows from the first-level booster cone hole through the pressure expansion cavity, it will accumulate in the pressure expansion cavity instantly, and then be ejected from the second-level booster cone hole; since the aperture of the second-level booster cone hole is smaller, the lift is higher when the water pressure remains unchanged; at the same time, the booster pump head is sealed and connected to the second pump casing, further ensuring that when the water flows out from the booster pump head, it will not overflow from the gap between the booster pump head and the second pump casing, further ensuring the lift of the deep well water pump.

[0018] Preferably, a filter plate is provided in the second connecting seat, the filter plate is clamped in the second connecting seat, elastic clamps are fixed on both sides of the filter plate, clamping grooves are opened on both sides of the bottom of the second connecting seat, and the elastic clamps are clamped in the clamping grooves.

[0019] The above technical solution is adopted: a filter plate is arranged in the second connecting seat, the filter plate is clamped in the second connecting seat, elastic clamping parts are fixed on both sides of the filter plate, clamping grooves are opened on both sides of the bottom of the second connecting seat, and the elastic clamping parts are clamped in the clamping grooves, which is convenient for disassembly of the filter plate during inspection and maintenance.

[0020] Preferably, an extension tube is fixedly connected to the top of the booster pump head, a valve is fixed on the extension tube, an external discharge hole for reflux obliquely downward is opened on the extension tube and the booster pump head, and a one-way valve is arranged in the external discharge hole.

[0021] The above technical solution is adopted: an extension pipe is fixedly connected through the top of the booster pump head, a valve is fixed on the extension pipe, an outer discharge hole for inclined downward reflux is opened on the extension pipe and the booster pump head, and a one-way valve is arranged in the outer discharge hole. When the valve is closed, since the motor is still running, water will accumulate in the extension pipe on the booster pump head, and then impact the one-way valve along the outer discharge hole to open, and impact the soft soil of the well wall around the booster pump head, so that the deep well water pump is not hindered when being pulled out from the deep well. A one-way valve is arranged in the outer discharge hole. Only when the one-way valve is opened can the water pumped by the deep well pump be discharged from the outer discharge hole.

[0022] Preferably, a rotating bearing is rotatably arranged on the booster pump head, a plurality of inclined blades are circumferentially distributed on the top of the rotating bearing, the inclined blades are aligned with the outer row of holes, a plurality of cutting knives are distributed on the outer ring of the rotating bearing, and the cutting knives are welded to the rotating bearing.

[0023] Preferably, the valve, the one-way valve and the motor are respectively communicatively connected to a controller.

[0024] The above technical solution is adopted: a rotating bearing is rotatably arranged on the booster pump head, a plurality of inclined blades are circumferentially distributed on the top of the rotating bearing, the inclined blades are aligned with the outer row holes, a plurality of cutting knives are distributed on the outer ring of the rotating bearing, and the cutting knives are welded on the rotating bearing. When the valve is closed, water flows from the outer row holes to impact the one-way valve to open and flow out of the booster pump head, and then impacts the inclined blades. The high-pressure water flow impacts the inclined blades to drive the rotating bearing to rotate, thereby causing the cutting knives to rotate and cut the well wall around the booster pump head. When both sides of the well wall collapse and hard soil prevents the deep well water pump from being pulled out, this design can effectively solve this problem.

[0025] Compared with the related art, the present invention has the following beneficial effects:

[0026] 1. Compared with the traditional deep well water pump, the present invention is detachably sealed and connected with the first pump casing through the base, and the first pump casing is detachably sealed and connected with the first connecting seat. The motor is arranged in the first pump casing, which improves the waterproofness of the first pump casing, prevents the motor from being damaged by water ingress, and is convenient for disassembly to maintain and service the motor. In addition, the first connecting seat and the second connecting seat are connected by a pipe sleeve, and can be disassembled from each other. A water inlet hole is opened on the pipe sleeve. When the output end of the motor rotates, it drives a plurality of centrifugal impellers on its output shaft to rotate, and water is sucked from the water inlet hole, and then transported through a plurality of centrifugal impellers one level at a time, and finally the water is ejected from the booster pump head. Since the second connecting seat and the second pump casing can be disassembled, the second pump casing and the booster pump head can also be disassembled. When the centrifugal impeller is damaged or the booster pump head is blocked, it can be disassembled for maintenance and repair. The beneficial effect of the present invention is to facilitate the disassembly of the various component structures of the deep well water pump, and to increase the disassembly of the deep well water pump by combining the various component structures, so as to facilitate more detailed inspection and maintenance of the deep well water pump.

[0027] 2. The booster pump head increases the water pressure to increase the lift. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of a combined type deep well water pump with adjustable head;

[0029] Figure 2 It is a structural cross-section diagram of a combined type deep well water pump with adjustable head;

[0030] Figure 3 This is a structural breakdown diagram of a combined adjustable head deep well water pump;

[0031] Figure 4 It is a schematic diagram of disassembling the base and the first pump casing of a combined adjustable head deep well water pump;

[0032] Figure 5 It is a disassembled bottom view of the base and the first pump casing of a combined adjustable-lift deep-well water pump;

[0033] Figure 6 It is a schematic diagram of disassembling a first pump casing and a first connecting seat of a combined adjustable-lift deep-well water pump;

[0034] Figure 7 It is a cross-sectional structural diagram of a first connecting seat, a second connecting seat and a pipe sleeve of a combined adjustable head deep well water pump;

[0035] Figure 8 It is a structural diagram of a first connecting seat, a second connecting seat and a pipe sleeve of a combined adjustable lift deep well water pump;

[0036] Fig. 9 It is a schematic diagram of disassembly between the second connection seat and the filter plate of a combined adjustable head deep well water pump;

[0037] Fig.10 It is a disassembly diagram of the second connection seat, the second pump casing and the booster pump head of a combined adjustable head deep well water pump;

[0038] Fig.11 It is a schematic diagram of disassembling the motor and base of a combined adjustable head deep well water pump;

[0039] Fig.12 A schematic diagram of the motor and base fixing of a combined adjustable head deep well water pump;

[0040] Fig.13 It is an overall schematic diagram of a combined deep well water pump with adjustable head;

[0041] Fig.14 It is a structural diagram of a booster pump head, a rotating bearing, a tilting blade, and a cutting blade of a combined adjustable head deep well water pump;

[0042] Fig.15 It is a partial cross-sectional schematic diagram of a booster pump head and an extension pipe in a combined adjustable head deep well water pump;

[0043] Fig.16 The present invention is a schematic diagram of the fixed structure of the motor output shaft and the centrifugal impeller in a combined adjustable head deep well water pump.

[0044] Numbers in the figure: 1, base; 10, third bolt; 11, first sealing sleeve; 12, first positioning block; 13, first bolt; 14, stabilizing groove; 15, screw; 16, locking nut; 17, anti-loosening gasket; 18, second sealing sleeve; 19, second bolt; 2, first pump housing; 21, first positioning groove; 22, second positioning groove; 3, second pump housing; 31, wiring harness protective housing; 4, first connecting seat; 41, second positioning block; 42, fourth bolt; 43, fifth bolt; 44, sixth bolt; 45. Conical surface; 5. Second connecting seat; 51. Filter plate; 52. Elastic clip; 53. Clip groove; 6. Pipe sleeve; 61. Water inlet hole; 7. Booster pump head; 70. First-stage booster conical hole; 71. Diffuser cavity; 72. Extension pipe; 73. Valve; 74. Rotating bearing; 75. Cutting knife; 76. External discharge hole; 77. One-way valve; 78. Second-stage booster conical hole; 79. Inclined blade; 8. Motor; 80. Keyway; 81. Machine foot; 9. Centrifugal impeller; 90. Flat key; 91. Screw. DETAILED DESCRIPTION

[0045] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0046] Embodiment 1

[0047] like Figure 4-Figure 5 As shown, a combined deep well water pump with adjustable head includes a base 1, on which a first pump casing 2 is sleeved, the first pump casing 2 is cylindrical, and the first pump casing 2 and the base 1 are detachably sealed. A motor 8 is detachably provided on the top of the base 1, and a first connecting seat 4 is detachably sealed and connected to the top of the first pump casing 2. The detachable sealing connection ensures the sealing inside the first pump casing 2 on the one hand to prevent the motor 8 from being damaged by water ingress, and on the other hand, when the motor 8 is damaged, it is convenient to inspect and maintain it by disassembling the base 1 and the first pump casing 2.

[0048] like Figure 1-Figure 7As shown, a second connection seat 5 is arranged above the first connection seat 4, a pipe sleeve 6 is fixedly connected between the first connection seat 4 and the second connection seat 5, and a plurality of water inlet holes 61 are opened on the pipe sleeve 6. When the deep well water pump is working, water is sucked into the pipe sleeve 6 through the water inlet holes 61. When the water inlet holes 61 of the pipe sleeve 6 are blocked or impurities such as sand and soil are accumulated in the pipe sleeve 6, the first connection seat 4 and the second connection seat 5 are removed from the pipe sleeve 6 to facilitate cleaning of the inside of the pipe sleeve 6; the motor 8 is in the first pump casing 2 and between the base 1 and the first connection seat 4, and a second pump casing 3 is detachably arranged on the second connection seat 5. The second pump casing 3 is cylindrical, and the output shaft of the motor 8 passes through the first connection seat 4 and the second connection seat 5 and extends into the second pump casing 3. A plurality of centrifugal impellers 9 are linearly arranged in the second pump casing 3, and the centrifugal impellers 9 are fixed on the output shaft of the motor 8. A booster pump head 7 is detachably arranged on the top of the second pump casing 3; the booster pump head 7 plays a role in increasing water pressure to increase the head. Specifically, a primary boosting cone hole 70, a pressure diffusion cavity 71 and a secondary boosting cone hole 78 are sequentially arranged in the axial direction from bottom to top of the boosting pump head 7. The aperture of the primary boosting cone hole 70 gradually decreases from bottom to top, the aperture of the secondary boosting cone hole 78 gradually decreases from bottom to top, and the upper end aperture of the primary boosting cone hole 70 is equal to or larger than the aperture of the lower end of the secondary boosting cone hole 78. The inner diameter of the pressure diffusion cavity 71 is larger than the upper end aperture of the primary boosting cone hole 70 and also larger than the aperture of the lower end of the secondary boosting cone hole 78. When water flows from the primary boosting cone hole 70 through the pressure diffusion cavity 71, it will accumulate in the pressure diffusion cavity 71 instantly, and then be ejected from the secondary boosting cone hole 78. Since the aperture of the secondary boosting cone hole 78 is smaller, the water pressure is increased, thereby achieving the purpose of increasing the head.

[0049] like Figure 3 As shown, the output end of the motor 8 rotates to drive a plurality of linearly arranged centrifugal impellers 9 to rotate, water is sucked in from the water inlet hole 61, transmitted through the plurality of centrifugal impellers 9 step by step, and finally ejected from the booster pump head 7. At the same time, when the centrifugal impeller 9 is easily damaged, or the booster pump head 7 is blocked and needs to be replaced and repaired, the booster pump head 7 and the second pump casing 3 are disassembled to facilitate the replacement and repair of the centrifugal impeller 9.

[0050] like Fig.16As shown, the centrifugal impeller 9 and the output shaft of the motor 8 are circumferentially fixedly connected by a fixing method of a keyway 80 and a flat key 90. Either the keyway 80 or the flat key 90 is arranged in the inner hole of the centrifugal impeller 9, and the other is arranged in the axial direction of the output shaft of the motor 8. For example, the keyway 80 is arranged in the axial direction of the output shaft of the motor 8. The centrifugal impeller 9 is fixed to the output shaft of the motor 8 by radial screws 91. The inner end of the radial screw 91 penetrated on each centrifugal impeller 9 presses into the keyway 80, and the flat keys 90 on two adjacent centrifugal impellers 9 leave a gap in the axial direction of the output shaft of the motor 8 for the inner end of the radial screw 91 to press into. In the above manner, the flat key 90 can be relatively fixed in the axial direction of the keyway 80, and the centrifugal impeller 9 can also be fixed to the output shaft of the motor 8.

[0051] When installing the centrifugal impeller 9, the centrifugal impeller 9 is assembled on the output shaft of the motor 8 one by one from bottom to top.

[0052] In order to prevent the output shaft of the motor 8 from swinging when the output shaft of the motor 8 drives the plurality of centrifugal impellers 9 to rotate, an anti-swing bearing (not shown in the figure) is fixed to the end of the output shaft of the motor 8 (the end close to the booster pump head 7). The specific implementation method is that the end of the output shaft of the motor 8 is sleeved on the inner ring of the anti-swing bearing, and the outer ring of the anti-swing bearing is circumferentially distributed with a plurality of fixing rods, one end of the fixing rod is fixed to the outer ring of the anti-swing bearing, and the other end of the fixing rod is fixed to the inner wall of the second pump housing 3;

[0053] In addition, the motor 8 is a servo motor 8 with adjustable power. By adjusting the speed of the output end of the motor 8, the rotation speed of the centrifugal impeller 9 is controlled, thereby realizing the size of the water flow sprayed from the booster pump head 7, thereby realizing the adjustable head of the deep well water pump.

[0054] Embodiment 2

[0055] Based on the above embodiment 1, Figure 4-Figure 5 As shown, in order to achieve sealing, a first sealing sleeve 11 is provided between the base 1 and the first pump housing 2. For example, a cylindrical body is provided at the top of the base 1, a sealing sleeve step groove is provided at the top of the outer wall of the cylindrical body, the first sealing sleeve 11 is installed in the sealing sleeve step groove, and the outer wall of the first sealing sleeve 11 is in sealing contact with the inner wall of the first pump housing 2. A plurality of threaded holes are respectively provided in the circumferential direction of the base 1 and the bottom of the first pump housing 2, and first bolts 13 are distributed on the plurality of threaded holes, and the first bolts 13 fix the first pump housing 2 to the base 1.

[0056] like Figure 5 , Fig.11 , Fig.12As shown, first positioning blocks 12 are fixed on both sides of the base 1, and first positioning grooves 21 are provided on both sides of the inner wall of the bottom of the first pump housing 2, and the first positioning blocks 12 are clamped in the first positioning grooves 21. The cooperation between the first positioning block 12 and the first positioning groove 21 can realize the circumferential fixation of the first pump housing 2 relative to the base 1 to ensure the connection strength. A stabilizing groove 14 is provided on the top of the base 1, and a screw 15 is fixed on the stabilizing groove 14. The four corners of the bottom of the motor 8 are welded with organic feet 81, and the machine feet 81 are provided with through holes with the same outer diameter as the screw 15. The four machine feet 81 are clamped in the corresponding stabilizing grooves 14, and the screw 15 is inserted in the through holes provided on the machine feet 81. A locking nut 16 is provided on the screw 15, and a locking gasket 17 is provided on the top of the machine foot 81. The locking nut 16 and the locking gasket 17 jointly fix the motor 8 on the base 1. The advantage of this structure is that the four machine feet 81 at the bottom of the motor 8 are inserted into the stabilizing groove 14, and then the machine feet 81 are fixed by the locking nuts 16 and the anti-loosening washers 17, which can ensure that the motor 8 maintains rotation stability and does not swing when running at a high speed.

[0057] like Figure 6 As shown, a second sealing sleeve 18 is provided between the first connecting seat 4 and the first pump housing 2. The first connecting seat 4 is in an annular shape. For example, a sealing sleeve positioning groove or step is provided at the lower end of the outer wall of the first connecting seat 4. The second sealing sleeve 18 is installed in the sealing sleeve positioning groove or step, and the outer wall of the second sealing sleeve 18 is sealed and connected to the inner wall of the first pump housing 2. Second positioning blocks 41 are fixed on both sides of the first connecting seat 4, and second positioning grooves 22 are provided on both sides of the top inner wall of the first pump housing 2. The second positioning blocks 41 are clamped in the second positioning grooves 22. This structure can realize the circumferential fixed connection between the first connecting seat 4 and the first pump housing 2.

[0058] like Figure 6 As shown, a plurality of second bolts 19 are distributed circumferentially on the top of the first pump housing 2, and the second bolts 19 fix the first pump housing 2 to the first connecting seat 4. For example, a plurality of threaded holes corresponding to the second bolts 19 are provided on the outer periphery of the first connecting seat 4. Through the cooperation of the second positioning block 41 and the second positioning groove 22, the second bolts 19 and the threaded holes can be matched one by one to improve the assembly efficiency.

[0059] like Figure 7 , Figure 8 , Fig.10As shown, the pipe sleeve 6 is fixed to the first connection seat 4 by the third bolt 10, and the pipe sleeve 6 is fixed to the second connection seat 5 by the fourth bolt 42, and the second connection seat 5 is fixed to the second pump housing 3 by the sixth bolt 44, and the lower end of the booster pump head 7 is inserted into the top of the second pump housing 3 and the two are sealed and connected, for example, a sealing ring is used to achieve a sealed connection between the lower end of the booster pump head 7 and the inner wall of the second pump housing 3. The booster pump head 7 is sealed and connected to the second pump housing 3, which further ensures that when the water flow is ejected from the booster pump head 7, it will not overflow from the gap between the booster pump head 7 and the second pump housing 3, further ensuring the head of the deep well water pump.

[0060] like Fig. 9 As shown, the booster pump head 7 is fixedly connected to the second pump housing 3 by the fifth bolt 43. A filter plate 51 is arranged in the second connection seat 5, and the filter plate 51 is clamped in the second connection seat 5. Elastic clamping members 52 are fixed on both sides of the filter plate 51. Clamping grooves 53 are provided on both sides of the bottom of the second connection seat 5. The elastic clamping members 52 are clamped in the clamping grooves 53. The filter plate 51 in the second connection seat 5 can filter larger particles, so that the water sprayed from the booster pump head 7 by the deep well water pump contains fewer impurities. The filter plate 51 is clamped in the second connection seat 5, and the elastic clamping members 52 on both sides of the filter plate 51 and the clamping groove 53 at the bottom of the second connection seat 5 are clamped in the clamping groove 53, so that the filter plate 51 can be disassembled easily during inspection and maintenance.

[0061] like Figure 2 As shown, secondly, the top surface of the first connection seat 4 is provided with a conical surface 45, so that, for example, sediment flows from the high part of the conical surface 45 to the low part and is discharged from the water inlet hole 61 when the motor 8 rotates at a low speed (not pumping water). When the motor 8 rotates at a high speed, the conical surface 45 at this time forms an inclination for at least part of the water entering the pipe sleeve 6 from the water inlet hole 61 to guide it upward, thereby increasing the flushing intensity of the filter plate 51 to reduce the maintenance times of the filter plate 51. And it can also make the fixing of the filter plate 51 more stable.

[0062] like Fig.10 As shown, in addition, a harness protection shell 31 is provided on the side wall of the second pump housing 3, and at least the power line connected to the motor 8 passes through the harness protection shell 31 to protect the power line. The power line passes through the side wall of the second pump housing 3, and a sealing ring is provided between the second pump housing 3 and the power line to prevent water from entering the second pump housing 3 through the gap between the power line and the second pump housing 3.

[0063] Embodiment 3

[0064] Based on the above-mentioned embodiment 1 or embodiment 2, as Figure 13-Figure 15As shown, the top of the booster pump head 7 is fixedly connected with an extension pipe 72, and a valve 73 is fixed on the extension pipe 72. An outer row hole 76 for downward reflux is provided on the extension pipe 72 and the booster pump head 7. Of course, the outer row hole 76 can also be arranged to be inclined upward or horizontal. A one-way valve 77 is arranged in the outer row hole 76. A rotating bearing 74 is rotatably arranged on the booster pump head 7. A plurality of inclined blades 79 are distributed circumferentially on the top of the rotating bearing 74. The inclined blades 79 are aligned with the outer row hole 76. A plurality of cutting knives 75 are distributed on the outer ring of the rotating bearing 74, and the cutting knives 75 are welded on the rotating bearing 74. The valve 73, the one-way valve 77 and the motor 8 in this embodiment are respectively connected to the controller for communication. The controller is commercially available. The controller controls the start or cancellation of the valve 73, the one-way valve 77 and the motor 8 respectively.

[0065] When valve 73 is closed, since motor 8 is still running, water will accumulate in extension pipe 72 on booster pump head 7, and then flow along outer discharge hole 76 to impact check valve 77 to open, impacting the collapsed soil of well wall around booster pump head 7, making it easier for deep well water pump to be pulled out of the deep well without obstruction. Check valve 77 is set in outer discharge hole 76, and only when check valve 77 is opened can water pumped by deep well pump be discharged from outer discharge hole 76.

[0066] When the valve 73 is closed, water accumulates in the extension pipe 72, and then the water flows out from the outer discharge hole 76 to impact the one-way valve 77, and then impacts the inclined blade 79. The high-pressure water impacts the inclined blade 79 to drive the rotating bearing 74 to rotate, thereby causing the cutting blade 75 to rotate and cut the well wall around the booster pump head 7. When both sides of the well wall collapse and hard soil prevents the deep well water pump from being pulled out, this design can effectively solve this problem.

[0067] Working principle: Figure 1-16As shown, the base 1 is detachably sealed with the first pump housing 2, the first pump housing 2 is detachably sealed with the first connecting seat 4, the motor 8 is arranged in the first pump housing 2, the waterproofness in the first pump housing 2 is improved, the motor 8 is prevented from being damaged by water, and it is convenient to disassemble and maintain the motor 8. In addition, the first connecting seat 4 and the second connecting seat 5 are connected by a pipe sleeve 6, and they can be disassembled from each other. A water inlet hole 61 is opened on the pipe sleeve 6. When the output end of the motor 8 rotates, it drives a plurality of centrifugal impellers 9 on its output shaft to rotate, and water is sucked in from the water inlet hole 61, and then After being transported step by step by several centrifugal impellers 9, water is finally ejected from the booster pump head 7. Since the second connecting seat 5 and the second pump casing 3 can be disassembled, the second pump casing 3 and the booster pump head 7 can also be disassembled. When the centrifugal impeller 9 is damaged or the booster pump head 7 is blocked, maintenance and repair can be carried out by disassembly. The beneficial effect of the present invention is to facilitate the disassembly of the various component structures of the deep well water pump. By combining the various component structures, the disassembly of the deep well water pump is increased, and more detailed inspection and maintenance of the deep well water pump are convenient.

[0068] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined deep well water pump with adjustable head, comprising a base (1), characterized in that: The base (1) is sleeved with a first pump housing (2), the first pump housing (2) and the base (1) are detachably sealed, a motor (8) is detachably provided on the top of the base (1), a first connecting seat (4) is detachably sealed on the top of the first pump housing (2), a conical surface (45) is provided on the top surface of the first connecting seat (4), a second connecting seat (5) is provided above the first connecting seat (4), a pipe sleeve (6) is fixedly connected between the first connecting seat (4) and the second connecting seat (5), a plurality of water inlet holes (61) are provided on the pipe sleeve (6), the motor (8) is located in the first pump housing (2) and between the base (1) and the first connecting seat (4), a second pump housing (3) is detachably provided on the second connecting seat (5), an output shaft of the motor (8) passes through the first connecting seat (4) and the second connecting seat (5) and extends to the second pump housing (3), a plurality of centrifugal impellers (9) are linearly arranged in the second pump housing (3), the centrifugal impellers (9) are fixed on the output shaft of the motor (8), and a booster pump head (7) is detachably arranged on the top of the second pump housing (3); the booster pump head (7) is provided with a primary booster conical hole (70), a pressure diffusion cavity (71) and a secondary booster conical hole (78) in the axial direction from bottom to top, and the inner diameter of the pressure diffusion cavity (71) is larger than that of the primary booster conical hole (70). The diameter of the upper end of the pressure cone hole (70) is larger than the diameter of the lower end of the secondary boost cone hole (78); a filter plate (51) is provided in the second connecting seat (5), the filter plate (51) is clamped in the second connecting seat (5), elastic clamping parts (52) are fixed on both sides of the filter plate (51), and clamping grooves (53) are provided on both sides of the bottom of the second connecting seat (5), and the elastic clamping parts (52) are clamped in the clamping grooves (53); The top of the booster pump head (7) is fixedly connected to an extension tube (72), a valve (73) is fixed on the extension tube (72), downwardly inclined outer holes (76) are provided on the extension tube (72) and the booster pump head (7), a one-way valve (77) is provided in the outer hole (76), a rotating bearing (74) is rotatably provided on the booster pump head (7), a plurality of inclined blades (79) are circumferentially distributed on the top of the rotating bearing (74), and a plurality of cutting knives (75) are distributed on the outer ring of the rotating bearing (74).

2. A combined adjustable lift deep well water pump according to claim 1, characterized in that: A first sealing sleeve (11) is arranged between the base (1) and the first pump housing (2); a plurality of threaded holes are opened in the circumferential direction of the base (1) and the bottom of the first pump housing (2); first bolts (13) are distributed on the plurality of threaded holes; the first bolts (13) fix the first pump housing (2) to the base (1).

3. A combined adjustable lift deep well water pump according to claim 1, characterized in that: First positioning blocks (12) are fixed on both sides of the base (1), first positioning grooves (21) are provided on both sides of the inner wall of the bottom of the first pump housing (2), and the first positioning blocks (12) are clamped in the first positioning grooves (21).

4. A combined adjustable head deep well water pump according to claim 1, characterized in that: A stabilizing groove (14) is provided on the top of the base (1), a screw (15) is fixed on the stabilizing groove (14), and machine feet (81) are welded at the four corners of the bottom of the motor (8), and the machine feet (81) are provided with through holes with the same outer diameter as the screw (15). The four machine feet (81) are clamped in the corresponding stabilizing grooves (14), and the screw (15) is inserted in the through holes provided in the machine feet (81). A locking nut (16) is provided on the screw (15), and an anti-loosening gasket (17) is provided on the top of the machine foot (81). The locking nut (16) and the anti-loosening gasket (17) together fix the motor (8) on the base (1).

5. The combined adjustable head deep well water pump according to claim 1, characterized in that: A second sealing sleeve (18) is arranged between the first connecting seat (4) and the first pump housing (2); second positioning blocks (41) are fixed on both sides of the first connecting seat (4); second positioning grooves (22) are provided on both sides of the top inner wall of the first pump housing (2); the second positioning blocks (41) are clamped in the second positioning grooves (22); a plurality of second bolts (19) are distributed in a circumferential direction on the top of the first pump housing (2); the second bolts (19) fix the first pump housing (2) and the first connecting seat (4).

6. A combined adjustable lift deep well water pump according to claim 1, characterized in that: The pipe sleeve (6) and the first connecting seat (4) are fixed by a third bolt (10), and the pipe sleeve (6) and the second connecting seat (5) are fixed by a fourth bolt (42), and the second connecting seat (5) and the second pump casing (3) are fixed by a sixth bolt (44).

7. The combined adjustable head deep well water pump according to claim 1, characterized in that: The lower end of the booster pump head (7) is inserted into the top of the second pump housing (3) and the two are sealed and connected. The booster pump head (7) and the second pump housing (3) are fixedly connected by a fifth bolt (43).

8. The combined adjustable head deep well water pump according to claim 1, characterized in that: The valve (73), the one-way valve (77) and the motor (8) are respectively connected to the controller for communication.

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