A deep well pump controller and manufacturing method thereof and a deep well pump

Abstract

The present invention provides a deep well pump controller and a manufacturing method and a deep well pump, belonging to the field of water pumps. It solves the problem that the integrated deep well pump controller cannot be taken out and replaced separately, and the epoxy resin filled is easy to thermally decompose and carbonize, which may easily cause fire in severe cases. A deep well pump includes a shell, and a pump body and a controller are sequentially arranged inside the shell. The controller can be removed from one end of the shell and replaced. It has the advantages of being able to replace the controller separately, saving resources, being economical, reducing the thermal decomposition and carbonization of epoxy resin, and reducing the possibility of fire.

Description

Technical Field

[0001] The present invention relates to the technical field of water pumps, and in particular to a deep well pump controller and a manufacturing method thereof, and a deep well pump. Background Art

[0002] A deep well pump is a machine that sinks into a wellbore to pump water. It is a pump that is immersed in a groundwater well to pump and deliver water. It is widely used in farmland irrigation and drainage, industrial and mining enterprises, rural drinking water, and water extraction from deep groundwater levels. Existing deep well pumps generally include an inlet section, a pump body, an outlet section, and a motor.

[0003] Traditional deep well pumps often use a design where the motor and pump body are directly connected and submerged in water. This design often integrates the controller inside or near the pump body to directly control the start and stop of the motor and the working status of the pump. This integrated design makes it impossible to take out or remove the controller. Once the controller is damaged but other parts are intact, the entire deep well pump can only be replaced, and the controller cannot be replaced alone, which is not cost-effective. In addition, due to the high power of the controller, the power components and the wiring on the PCB board will generate high temperatures. The epoxy resin covering the circuit board that is in direct contact with the circuit board will undergo thermal decomposition and carbonization at a certain temperature, which can cause malfunctions, damage, or even fire in severe cases. Summary of the invention

[0004] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a deep well pump controller and a manufacturing method and a deep well pump, which have the advantages of being able to replace the controller separately, saving resources, being economically efficient, avoiding thermal decomposition and carbonization of epoxy resin, and reducing the possibility of fire. The invention solves the problem that the integrated design of the traditional deep well pump makes it impossible to take out or remove the controller separately. Once the controller is damaged while other components are intact, the entire deep well pump can only be replaced, and the controller cannot be replaced separately, which is not economically efficient. In addition, due to the heat generated by the controller, the epoxy resin covering the circuit board that is in direct contact with the circuit board undergoes thermal decomposition and carbonization, which in severe cases leads to malfunction, damage, and even fire.

[0005] (II) Technical solution In order to achieve the above-mentioned purpose of being able to replace the controller separately, saving resources, being economically efficient, reducing thermal decomposition and carbonization of epoxy resin, and reducing the possibility of fire, the present invention provides the following technical solutions: a deep well pump controller, including a controller, the controller also includes an arc shell, one side of the arc shell is set as a plane to form a heat dissipation base plate, wiring boards are set at both ends of the arc shell and the heat dissipation base plate, a circuit board is fixedly installed on the heat dissipation base plate, and a layer of silicone rubber or polyvinyl chloride glue is set on the upper and lower surfaces of the circuit board, and the cylindrical structure formed by the arc shell and the heat dissipation base plate is filled with epoxy resin.

[0006] Preferably, the soft potting glue is a potting material such as silicone rubber or polyvinyl chloride glue which is soft, has good insulation properties and is not easily carbonized at high temperatures.

[0007] A method for manufacturing a deep well pump controller comprises the following steps: S. Install various circuit components on the customized circuit board according to the design drawing and ensure that the electrical connections are correct; S. Fix the circuit board on the heat dissipation base plate; S. After the circuit board is tested and found to be correct, apply a layer of silicone rubber or polyvinyl chloride glue on the upper and lower surfaces of the circuit board; S. Fix the circuit board on the heat dissipation base plate; S. Fill epoxy resin into the cylindrical structure formed by the arc shell and the heat dissipation base plate so that the epoxy resin completely wraps the circuit board.

[0008] A deep well pump comprises a shell, wherein a pump body and a controller are sequentially arranged inside the shell, and the controller can be removed from one end of the shell and replaced.

[0009] Preferably, a second limiting step is provided on the shell, and at least one O-ring is provided on the clamp below and above the second limiting step on the inner side of the shell, one end of the controller is pressed on the O-ring, and a clamp is provided on the other end of the controller, the O-ring and the clamp are used to fix the controller, and after the clamp is removed, the controller can be removed from the bottom of the shell.

[0010] Preferably, a third limiting step and a fourth limiting step are further provided on the shell, a clamp is clamped above the third limiting step, and a first limiting step is further provided above the second limiting step.

[0011] Preferably, an oil bag is installed inside the shell below the third limiting step, and transformer oil is filled in the oil bag. When the oil bag is full of transformer oil, the oil bag is in close contact with the inner wall of the shell to balance the pressure and prevent leakage. The bottom edge of the shell is provided with a convex ring extending from the inside of the shell.

[0012] Preferably, a stainless steel pressure plate is provided on one end surface of the oil bladder, and a water hole is provided on the pressure plate. The water hole is used to introduce water to the outside of the oil bladder to balance the pressure inside and outside the oil bladder and the shell.

[0013] Preferably, a fourth limiting step and a clamp are provided inside the upper shell of the convex ring, and the fourth limiting step and the clamp fix the oil bag below the third limiting step.

[0014] Preferably, the clamp comprises a broken ring, and clamping strips are respectively provided on both ends of the broken end of the broken ring.

[0015] (III) Beneficial effects Compared with the prior art, the present invention provides a deep well pump controller and a manufacturing method and a deep well pump, which have the following beneficial effects: The deep well pump controller, manufacturing method and deep well pump are used in conjunction with the housing, controller, O-shaped rubber ring and clamp. On the circuit board customized according to the design, various circuit components are installed according to the design drawing, and the electrical connection is ensured to be correct, and then the circuit board is installed on the heat dissipation base plate. Then, a layer of silicone rubber or polyvinyl chloride glue with a thickness of about 5 mm is first coated on the upper and lower surfaces of the circuit board, and then the circuit board is installed on the heat dissipation base plate, and then epoxy resin is filled in the cylinder formed by the arc shell and the heat dissipation base plate. Finally, a complete deep well pump controller is formed. The controller not only does not lose the original epoxy resin's waterproof and moisture-proof, insulation protection, shock resistance and compression resistance, and extended service life characteristics, but also avoids the thermal decomposition and carbonization of epoxy resin at high temperature for a long time, which may cause damage or even fire in severe cases. Thereby avoiding the carbonization of epoxy resin and reducing the possibility of fire.

[0016] During installation, install the pump body above the first limit step inside the shell. After the pump body is installed, install the O-shaped rubber ring, controller, clamp, oil bag, and clamp in sequence from the bottom of the shell to the inside of the shell. The O-shaped rubber ring is installed below the second limit step, and one end of the controller is pressed on the O-shaped rubber ring, and the first clamp is pressed on the other end of the controller. Use clamping pliers to clamp the two clamping strips respectively, so that the broken ring shrinks inward, place the clamp on the other end of the controller, and release the clamping pliers. At this time, the clamp is stretched out to the surroundings again under the recovery of elastic force, and is tightened above the third limit step, and finally the controller is fixed between the second limit step and the third limit step. Fill the shell with a sufficient amount of transformer oil, and then continue to install the oil bag and pressure plate from the bottom of the shell, so that the oil bag fits tightly inside the shell, and finally install the second clamp inside the convex ring in the same way to fix the oil bag inside the shell. When the controller is damaged, use clamps to remove the clamp, then remove the oil bag, after which some transformer oil in the oil bag can be released, remove another clamp, and finally remove the damaged controller, replace it with a good controller, and install other components in the same way to complete the replacement of the controller alone. This achieves the effect of replacing the controller alone, saving resources, and meeting economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a partial cross-sectional structural schematic diagram of a deep well pump of the present invention; Figure 2This is a schematic diagram of the structure of a deep well pump of the present invention; Figure 3 This is a front view of a deep well pump housing of the present invention; Figure 4 This is a cross-sectional view of a deep well pump casing at AA of the present invention; Figure 5 This is an enlarged schematic diagram of the structure of a deep well pump at position A of the present invention; Figure 6 This is a schematic diagram of a deep well pump clamp structure of the present invention; Figure 7 A schematic diagram of a deep well pump controller according to the present invention Figure Ⅰ ; Figure 8 A schematic diagram of a deep well pump controller according to the present invention Figure II .

[0018] In the figure: 1. Shell, 11. First limiting step, 12. Second limiting step, 13. Third limiting step, 14. Fourth limiting step, 15. Protruding ring, 2. Oil bag, 21. Oil hole, 22. Pressure plate, 3. Controller, 31. Arc housing, 32. Wiring board, 33. Circuit board, 34. Heat dissipation base plate, 4. O-ring, 5. Clamp, 51. Broken ring, 52. Clamping strip, 6. Pump body, 7. Motor. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] See also Figure 1-8 A deep well pump controller 3 includes an arc shell 31, one side of the arc shell 31 is set as a plane to form a heat dissipation base plate 34, and the cylindrical structure formed by the arc shell 31 and the heat dissipation base plate 34 provides necessary space for the installation of an internal circuit board 33 and a filter capacitor (not shown in the figure).

[0021] The arc housing 31 and the heat dissipation base plate 34 are provided with wiring boards 32 at both ends. The wiring boards 32 are provided with a plurality of wiring holes for fixing the wires to ensure the neatness and order of the circuit. This prevents the wires from moving and causing the sealant around the wires to loosen, causing the transformer oil to flow along the wires into the circuit board 33, thereby damaging the circuit board 33. On the circuit board 33 customized according to the design, various circuit components are installed according to the design drawing, and the electrical connection is ensured to be correct, and then the circuit board 33 is fixedly installed on the heat dissipation base plate 34. Then a layer of soft potting glue is applied on the upper and lower surfaces of the circuit board 33. The soft potting glue can be a potting material with good heat resistance and insulation performance and not easy to carbonize at high temperature, such as silicone rubber or polyvinyl chloride glue, to prevent the epoxy resin from directly contacting the circuit board 33 when filling the epoxy resin. Then the circuit board 33 is fixedly installed on the heat dissipation base plate 34, and finally the cylindrical structure formed by the arc shell 31 and the heat dissipation base plate 34 is filled with epoxy resin and solidified therein. After first applying a layer of silicone rubber or polyvinyl chloride glue with a thickness of about 5 mm on the upper and lower surfaces of the circuit board 33, the circuit board 33 is installed on the heat dissipation base plate 34, and then the epoxy resin is filled in the cylinder formed by the arc shell 31 and the heat dissipation base plate 34. Not only does it not lose the original epoxy resin's waterproof and moisture-proof, insulation protection, shock resistance, and extended service life characteristics, it also avoids the epoxy resin's thermal decomposition and carbonization under high temperature for a long time, which may cause damage or even fire in serious cases. This reduces the carbonization of the epoxy resin and reduces the possibility of fire.

[0022] A deep well pump includes a housing 1, which is the main structure of the deep well pump and is in the shape of a vertical hollow cylinder, and is used to accommodate and support other components in the housing 1. The design of the housing 1 ensures the overall stability and sealing of the deep well pump. A controller 3 is used to control the operation of a pump body 6. When the controller 3 is damaged, the controller 3 can be removed from the bottom of the housing 1 so as to be replaced with a new controller 3.

[0023] The housing 1 is provided with a second limiting step 12 and a third limiting step 13. An O-shaped rubber ring 4 is provided below the second limiting step 12 on the inner wall of the housing 1. A detachable clamp 5 is provided above the third limiting step 13 on the inner wall of the housing 1. A controller 3 is installed between the O-shaped rubber ring 4 and the clamp 5. The O-shaped rubber ring 4 and the clamp 5 are used to fix the controller 3. The second limiting step 12 and the third limiting step 13 are the raised parts on the inner wall of the housing 1 (in a ring shape that is recessed inward on the outside of the housing 1), which are used to position and fix the controller 3 placed in the pump body 6. The second limiting step 12 is located at the top and abuts against the O-shaped rubber ring 4; the third limiting step 13 is located at the bottom and engages with the clamp 5 to fix the controller 3 together. The clamp 5 is a detachable part. The clamp 5 can be easily removed by inserting a clamp into the housing 1, so that the controller 3 can be taken out from the bottom of the housing 1. A pump body 6 (not shown) is connected to the top of the controller 3 to extract and deliver the liquid. The pump body 6 is a prior art and will not be described in detail here. The fourth limiting step 14 is used to compress the oil bag 2.

[0024] The oil bladder 2 is installed inside the housing 1 below the third limit step 13. The oil bladder 2 is filled with transformer oil. When the oil bladder 2 is filled with transformer oil, the oil bladder 2 is in close contact with the inner wall of the housing 1 to balance the pressure and prevent leakage. The oil bladder 2 in the deep well pump is mainly used to adjust the internal and external pressure balance to ensure the normal operation of the motor in the pump. The oil bladder 2 plays three main roles: Pressure balance: The oil bag 2 helps to adjust the pressure difference between the inside and outside of the pump, preventing the motor from being adversely affected by water pressure changes.

[0025] Protecting the motor: By keeping the oil pressure around the motor stable, the oil bladder 2 helps protect the motor from moisture intrusion and mechanical damage.

[0026] Extended service life: Through these protective measures, the oil bladder 2 helps to extend the service life of the submersible pump and improve its overall performance and reliability.

[0027] The bottom edge of the shell 1 is provided with a convex ring 15 extending from the inside of the shell 1. A fourth limiting step 14 and a second clamp 8 are provided inside the shell 1 above the convex ring 15. The outward-turned edge of the oil bladder 2 is pressed between the fourth limiting step 14 and the second clamp 8, and is located below the third limiting step 13. One end of the pressure plate 22 of the oil bladder 2 with a water hole 21 is close to the bottom of the shell 1. After the oil bladder 2 is installed at the bottom of the shell 1, it is necessary to fix the oil bladder 2 inside the shell 1 to prevent it from falling out. A platform is formed between the convex ring 15 extending inward from the bottom edge of the shell 1 and the vertical cylindrical part of the shell 1. After the oil bladder 2 and the pressure plate 22 are installed therein, the second clamp 8 is installed inside the convex ring 15 by clamping pliers. When the clamping forceps are released, the second clamp 8 will automatically expand and press against the convex ring 15 and the pressure plate 22 of the housing 1 , and the two clamping strips 52 of the second clamp 8 will press against the pressure plate 22 of the oil bag 2 , thereby fixing the oil bag 2 inside the housing 1 .

[0028] A water hole 21 is provided on one end surface of the pressure plate 22 of the oil bag 2, and the water hole 21 is used to introduce water to the outside of the oil bag 2 to balance the pressure inside and outside the oil bag 2 and the housing 1. Secondly, in the process of replacing the damaged controller 3, the oil bag 2 needs to be removed first. After replacing the intact controller 3, a sufficient amount of transformer oil is added to the housing 1, and the oil bag 2 is returned to its original position, so that the oil bag 2 can play its role again.

[0029] The clamp 5 includes a broken ring 51, and clamping strips 52 are respectively arranged at both ends of the broken end of the broken ring 51. The clamp 5 plays the role of fixing and limiting. Since the clamp 5 needs to be installed inside the housing 1, the housing 1 is a vertical cylindrical structure, and the clamp 5 is installed therein, the depth is deep, and it is very inconvenient to install or remove by hand. Therefore, the clamp 5 is designed as a broken ring 51 as a whole, and clamping strips 52 extending to the inside of the broken ring 51 are arranged on both ends of the broken ring 51 at the broken end of the broken ring 51, and the clamping strips 52 play the role of resisting and pressing the fixed parts that need to be fixed. The clamp 5 cooperates with the clamping pliers, and the clamp 5 can be installed deeper inside the housing 1. In addition, the two clamping strips 52 can be arranged in parallel with each other, or they can be arranged at a certain angle, extending from the two ends of the broken ring 51 to both sides (upper left and upper right). This design can make the clamping pliers not easy to slip when clamping the two clamping strips 52.

[0030] When the clamping pliers clamp the two clamping strips 52 respectively, the two clamping strips 52 are moved closer to each other by manual force, which drives the diameter of the broken ring 51 to reduce, and the clamp 5 can be installed at the required position. After the clamp 5 is in place, the clamping pliers are released, and the broken ring 51 will expand automatically so that the clamp 5 is clamped at the required position, thereby playing a role of fixing and limiting.

[0031] Working principle: On the customized circuit board 33, various circuit components are installed according to the design drawing, and the electrical connection is ensured to be correct, and then the circuit board 33 is installed on the heat dissipation base plate 34. Then, a layer of silicone rubber or polyvinyl chloride glue with a thickness of about 5 mm is coated on the upper and lower surfaces of the circuit board 33, and then the circuit board 33 is installed on the heat dissipation base plate 34, and then epoxy resin is filled into the cylinder formed by the arc shell 31 and the heat dissipation base plate 34. Finally, a complete deep well pump controller 33 is formed. The controller 33 not only does not lose the original epoxy resin's waterproof and moisture-proof, insulation protection, shock resistance and compression resistance, and extended service life characteristics, but also avoids the thermal decomposition and carbonization of epoxy resin under high temperature for a long time, which may cause damage or even fire in serious cases. Thereby reducing the carbonization of epoxy resin and reducing the possibility of fire.

[0032] During installation, install the pump body 6 above the first limiting step 11 inside the housing 1. After the pump body 6 is installed, install the O-ring 4, the controller 3, the clamp 5, the oil bag 2, and the clamp 5 in sequence from the bottom of the housing 1 to the inside of the housing 1. The O-ring 4 is installed below the second limiting step 12, and one end of the controller 3 is pressed onto the O-ring 4, and the first clamp 5 is pressed onto the other end of the controller 3. Use clamping pliers to clamp the two clamping strips 52 respectively, so that the broken ring 51 shrinks inward, place the clamp 5 on the other end of the controller 3, and release the clamping pliers. At this time, the clamp 5 is re-opened to the surroundings under the recovery of elastic force, and is tightened above the third limiting step 13, and finally the controller 3 is fixed between the second limiting step 12 and the third limiting step 13. Fill the housing 1 with a sufficient amount of transformer oil, then continue to install the oil bag 2 and the pressure plate 22 from the bottom of the housing 1, so that the oil bag 2 fits tightly inside the housing 1, and finally install the second clamp 5 inside the convex ring 15 in the same way to fix the oil bag 2 inside the housing 1. When the controller 3 is damaged, use a clamp to take out the clamp 5, then take out the oil bag 2, after the oil bag 2 is taken out, some of the transformer oil in the oil bag 2 can be released, take out another clamp 5, finally take out the damaged controller 3, replace it with a good controller 3, install other components in the same way, and complete the separate replacement of the controller 3. Thus, the controller 3 can be replaced separately, saving resources and meeting economic benefits.

[0033] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0034] 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 deep well pump controller, characterized in that: The controller (3) comprises a circular arc shell (31), one side of the circular arc shell (31) is arranged as a plane to form a heat dissipation base plate (34), wiring plates (32) are arranged at both ends of the circular arc shell (31) and the heat dissipation base plate (34), a circuit board (33) is fixedly mounted on the heat dissipation base plate (34), a layer of soft potting glue is arranged on the upper and lower surfaces of the circuit board (33), and epoxy resin is filled in the cylindrical structure formed by the circular arc shell (31) and the heat dissipation base plate (34).

2. A deep well pump controller according to claim 1: the soft potting glue is silicone rubber or polyvinyl chloride glue.

3. A method for manufacturing a deep well pump controller according to claim 1, characterized in that: The following steps are involved: S1. Install various circuit components on the custom-designed circuit board (33) according to the design drawing and ensure that the electrical connections are correct; S2, fixing the circuit board (33) on the heat dissipation base plate (34); S3, after the circuit board (33) is tested and found to be correct, a layer of soft potting glue is applied to the upper and lower surfaces of the circuit board (33); S4, fixing the circuit board (33) on the heat dissipation base plate (34); S5. Filling epoxy resin into the cylindrical structure formed by the arc housing (31) and the heat dissipation base plate (34) so ​​that the epoxy resin completely wraps the circuit board (33).

4. A deep well pump according to claim 1, characterized in that: It comprises a housing (1), wherein a pump body (6) and a controller (3) are arranged in sequence inside the housing (1), and the controller (3) can be removed from one end of the housing (1) and replaced.

5. A deep well pump according to claim 4, characterized in that: The housing (1) is provided with a second limiting step (12); at least one O-shaped rubber ring (4) is provided on the clamp (5) below and above the second limiting step (12) inside the housing (1); one end of the controller (3) is pressed onto the O-shaped rubber ring (4); the other end of the controller (3) is provided with a clamp (5); the O-shaped rubber ring (4) and the clamp (5) are used to fix the controller (3); after the clamp (5) is removed, the controller (3) can be removed from the bottom of the housing (1).

6. A deep well pump according to claim 5, characterized in that: The housing (1) is also provided with a third limiting step (13) and a fourth limiting step (14); a clamp (5) is clamped above the third limiting step (13); and a first limiting step (11) is also provided above the second limiting step (12).

7. A deep well pump according to claim 6, characterized in that: An oil sac (2) is installed inside the shell (1) below the third limiting step (13), and transformer oil is contained inside the oil sac (2). When the oil sac (2) is filled with transformer oil, the oil sac (2) is in close contact with the inner wall of the shell (1) to balance the pressure and prevent leakage. The bottom edge of the shell (1) is provided with a convex ring (15) extending from the inside of the shell (1).

8. A deep well pump according to claim 7, characterized in that: A stainless steel pressure plate (22) is provided on one end surface of the oil sac (2), and a water hole (21) is provided on the pressure plate (22). The water hole (21) is used to introduce water to the outside of the oil sac (2) to balance the pressure inside and outside the oil sac (2) and the housing (1).

9. A deep well pump according to claim 7, characterized in that: A fourth limiting step (14) and a clamp (5) are provided inside the upper shell (1) of the convex ring (15), and the fourth limiting step (14) and the clamp (5) fix the oil bag (2) below the third limiting step (13).

10. A deep well pump according to claim 5, characterized in that: The clamp (5) comprises a broken ring (51), and clamping strips (52) are respectively provided on both ends of the broken end of the broken ring (51).

Images