A silent intelligent controlled submersible pump

Abstract

The utility model provides a silent intelligent control submersible pump, which belongs to the field of submersible pumps and solves the cavitation and negative pressure problems that may occur in the working process of the submersible pump. The utility model includes a barrel and a pump body, a rotating shaft and a motor are installed in the barrel, a pump body and a water suction chamber are installed under the barrel, a pump shaft is installed in the pump body, the rotating shaft and the pump shaft are fixedly connected, a mounting shell is provided on the barrel, a control box and a pressure regulating chamber are provided in the mounting shell, and a capacitor is installed in the control box; a check valve is provided in the pressure regulating chamber, the check valve is divided into a valve body and a valve cover, a short rod and a sealing ring are provided on the valve body, a guide hole matching the short rod is provided on the valve cover, and a spring is provided between the valve cover and the valve body. The advantages of the utility model are: a control box for controlling the speed of the pump shaft according to the actual pressure is provided in the pump body, and a check valve with a spring is provided, which is convenient for blocking the water outlet end of the pump body, adjusting the speed of the pump shaft to change the pressure in the pump body, and eliminating negative pressure; a capacitor is provided to reduce the noise generated when the submersible pump is running.

Description

Technical Field

[0001] The utility model belongs to the field of submersible pumps and relates to a submersible pump, in particular to a silent intelligent control submersible pump. Background Art

[0002] Submersible pumps are important equipment for deep well water extraction. When in use, the entire unit submerges in the water to extract groundwater to the surface for domestic water, mine rescue, industrial cooling, farmland irrigation, seawater lifting, ship loading, and fountain landscape.

[0003] During the operation of the submersible pump, the water flow in the pump body will be stirred to form low pressure. Under the influence of the low-pressure water flow, cavitation is likely to occur on the impeller of the submersible pump. Cavitation can easily lead to reduced head, decreased mechanical efficiency, reduced flow rate, or even interruption of flow in the submersible pump. At the same time, cavitation can cause deformation, material erosion, and severe electrochemical corrosion at the impeller.

[0004] For example, a structurally stable multi-stage submersible pump with application number 202220419940.4 includes a submersible motor, a water inlet section, a pump shaft and a pump outlet. Several water inlet sections are arranged between the submersible motor and the pump outlet. Impellers are installed in the water inlet sections. The impellers are installed on the pump shaft. Metal sheaths are installed between adjacent impellers. The metal sheaths are welded to the pump shaft to reduce assembly errors, improve the strength of the pump shaft, and enhance the axial stability of the impeller.

[0005] The above patent may cause negative pressure during operation and further lead to cavitation, resulting in reduced pump head, decreased mechanical efficiency, reduced flow rate, and difficulty in achieving the function of a submersible pump. At the same time, cavitation can cause impeller deformation, material erosion, and electrochemical corrosion. Utility Model Content

[0006] The purpose of the utility model is to provide a submersible pump which can reduce noise generation and can only regulate water flow pressure in view of the above problems existing in the prior art.

[0007] The utility model can be implemented through the following technical scheme: a silent intelligent control submersible pump, including a barrel and a pump body, a rotating shaft and a motor are installed in the barrel, a pump shaft is installed in the pump body, the pump shaft and the rotating shaft are fixedly connected, a water suction chamber is installed below the pump body, a mounting shell is installed above the barrel, an extrusion chamber is installed above the mounting shell, a cable is installed on the extrusion chamber, a control box is opened in the mounting shell, the control box is connected to the motor through electric wires, a pressure regulating chamber is arranged next to the control box, and a check valve is installed in the pressure regulating chamber.

[0008] In the above-mentioned silent intelligent control submersible pump, a capacitor is installed at the control box.

[0009] In the above-mentioned silent intelligent control submersible pump, the check valve is provided with a valve body and a valve cover, the valve body is provided with a short rod, the valve cover is provided with a guide hole, and the short rod passes through the guide hole.

[0010] In the above-mentioned silent intelligent control submersible pump, a spring is arranged between the short rod and the valve cover, a positioning groove is opened on the valve body, and one end of the spring is installed in the positioning groove.

[0011] In the above-mentioned silent intelligent control submersible pump, a hollow sphere is arranged in the valve body, and a rubber ring is installed outside the valve body.

[0012] In the above-mentioned silent intelligent control submersible pump, a water outlet hole is provided on the valve cover.

[0013] Compared with the prior art, the utility model has the following advantages: the motor is controlled by a control box, and when the pressure in the pump body is lower than a preset value, the control box reduces the motor speed; when the pressure in the pump body is higher than a preset value, the motor speed is increased; a check valve is installed at the discharge chamber of the pump body, and the check valve blocks the water flow channel through the tension of the spring, and the water can only pass through when the water pressure is greater than the tension of the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a cross-sectional view of a silent, non-negative-pressure submersible pump;

[0015] Figure 2 yes Figure 1 The enlarged image in the middle circle A;

[0016] Among them, 1. barrel; 2. pump body; 3. rotating shaft; 4. pump shaft; 5. water suction chamber; 6. mounting shell; 61. pressure regulating chamber; 7. extrusion chamber; 8. cable; 9. control box; 91. wire; 92. capacitor; 10. check valve; 101. valve cover; 1011. guide hole; 1012. water outlet hole; 102. valve body; 1021. short rod; 1022. positioning groove; 1023. hollow sphere; 11. motor; 12. spring; 13. rubber ring. DETAILED DESCRIPTION

[0017] The following are specific embodiments of the present invention and the accompanying drawings to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

[0018] like Figure 1 to Figure 2As shown, the utility model can be implemented through the following embodiments: a silent intelligent control submersible pump, including a barrel 1 and a pump body 2, a rotating shaft 3 and a motor 11 are installed in the barrel 1, a pump shaft 4 is installed in the pump body 2, the pump shaft 4 and the rotating shaft 3 are fixedly connected, a water suction chamber 5 is installed below the pump body 2, a mounting shell 6 is installed above the barrel 1, an extrusion chamber 7 is installed on the mounting shell 6, a cable 8 is installed on the extrusion chamber 7, a control box 9 is opened in the mounting shell 6, the control box 9 is connected to the motor 11 through an electric wire 91, a pressure regulating chamber 61 is arranged next to the control box 9, and a check valve 10 is installed in the pressure regulating chamber 61.

[0019] The control box 9 is connected to the motor 11, and is used to detect the internal pressure of the pump body 2. At the same time, it controls the speed of the motor 11 according to the comparison between the actual pressure in the pump body 2 and the preset pressure, so as to realize the frequency conversion of the submersible pump to adjust the internal pressure of the pump body 2. The check valve 10 is set to prevent the water flow in the extrusion chamber 7 from flowing back when the internal pressure of the pump body 2 is too low, and to prevent the water flow flowing into the pump body 2 from rushing into the extrusion chamber 7, so that the water pressure cannot return to the preset value.

[0020] like Figure 1 As shown, a capacitor 92 is installed at the control box 9. The capacitor 92 is used to reduce the current impact received by the motor 11 when starting, and reduce the vibration and noise of the pump body 2.

[0021] like Figure 1 and Figure 2 As shown, the check valve 10 is provided with a valve body 102 and a valve cover 101, the valve body 102 is provided with a short rod 1021, the valve cover 101 is provided with a guide hole 1011, and the short rod 1021 passes through the guide hole 1011. The short rod 1021 and the guide hole 1011 cooperate to guide the movement of the valve body 102 to prevent the valve body 102 from deviating during repeated movement, resulting in reduced sealing at the check valve 10.

[0022] like Figure 1 and Figure 2 As shown, a spring 12 is arranged between the short rod 1021 and the valve cover 101, and a positioning groove 1022 is provided on the valve body 102, and one end of the spring 12 is installed in the positioning groove 1022. The arrangement of the spring 12 allows the valve body 102 to reciprocate, and at the same time, the elastic potential energy inside the spring 12 requires the water flow from the pump body 2 to maintain a certain water pressure in order to push open the check valve 10 to deliver water to the user; the positioning groove 1022 is used to accommodate the spring 12 in the valve body 102, to prevent the spring 12 from being offset in the installation state due to repeated movements, resulting in a reduction in the pressure of the water flow to push open the valve body 102.

[0023] like Figure 1 and Figure 2As shown, a hollow sphere 1023 is provided inside the valve body 102, and a rubber ring 13 is installed outside the valve body 102. The hollow sphere 1023 provides a buffer, and improves the pressure bearing capacity of the valve body 102 through its own deformation, prevents the valve body 102 from being damaged such as cracks due to excessive pressure, and improves the service life of the valve body 102. The rubber ring 13 is used to strengthen the sealing line between the valve body 102 and the mounting shell 6.

[0024] like Figure 1 and Figure 2 As shown, a water outlet hole 1012 is provided on the valve cover 101. The water outlet hole 1012 is used to open the barrier between the check valve 10 and the extrusion chamber 7, so that water can flow from the check valve 10 to the extrusion chamber 7. At the same time, the opening of the water outlet hole 1012 facilitates the setting of the guide hole 1011, so as to prevent the water from having difficulty flowing out through the valve cover 101 after the guide hole 1011 is opened.

[0025] The principle of the utility model is: start the motor 11, the shaft 3 drives the pump shaft 4 to work, the submersible pump starts to pump water, the water flow is pumped to the pressure regulating chamber 61 and hits the valve body 102 of the check valve 10 through the water pressure, the control box 9 continuously increases the rotation speed of the shaft 3 to increase the rotation speed of the pump shaft 4 until the preset pressure is reached. After the water pressure reaches the standard, the water flow lifts the check valve 10, and the water flow passes through the water outlet hole 1012 of the valve cover 101 and flows into the pressure chamber 7 and flows out; when negative pressure appears in the pump body 2 and cavitation occurs, the water pump head is reduced and the water outlet pressure is reduced. At this time, the check valve 10 is blocked by the elastic force of the spring 12, and the control box 9 reduces the rotation speed of the shaft 3 to reduce the negative pressure in the pump body 2 until the water pressure rises again to reach the preset pressure, and hits the valve body 102 of the check valve 10 again, and the rotation speed of the pump shaft 4 is increased by increasing the rotation speed of the shaft 3 again.

[0026] The specific embodiments described herein are merely examples of the spirit of the present invention. Those skilled in the art may make various modifications or additions to the specific embodiments described or replace them in similar ways, but they will not deviate from the spirit of the present invention or exceed the scope defined by the appended claims.

[0027] Although various terms are used more frequently in this article, the possibility of using other terms is not excluded. These terms are used only to more conveniently describe and explain the essence of the utility model; interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A silent intelligent controlled submersible pump, comprising a barrel (1) and a pump body (2), wherein a rotating shaft (3) and a motor (11) are installed in the barrel (1), a pump shaft (4) is installed in the pump body (2), and the pump shaft (4) is fixedly connected to the rotating shaft (3), a water suction chamber (5) is installed below the pump body (2), a mounting shell (6) is installed above the barrel (1), an extrusion chamber (7) is installed on the mounting shell (6), and a cable (8) is installed on the extrusion chamber (7), a control box (9) is provided in the mounting shell (6), and the control box (9) is connected to the motor (11) through an electric wire (91), a pressure regulating chamber (61) is provided next to the control box (9), and a check valve (10) is installed in the pressure regulating chamber (61).

2. A silent intelligent controlled submersible pump according to claim 1, characterized in that: A capacitor (92) is installed at the control box (9).

3. A silent intelligent controlled submersible pump according to claim 1, characterized in that: The check valve (10) is provided with a valve body (102) and a valve cover (101); the valve body (102) is provided with a short rod (1021); a guide hole (1011) is opened on the valve cover (101); and the short rod (1021) passes through the guide hole (1011).

4. A silent intelligent controlled submersible pump according to claim 3, characterized in that: A spring (12) is arranged between the short rod (1021) and the valve cover (101), a positioning groove (1022) is provided on the valve body (102), and one end of the spring (12) is installed in the positioning groove (1022).

5. A silent intelligent controlled submersible pump according to claim 3, characterized in that: A hollow sphere (1023) is arranged inside the valve body (102), and a rubber ring (13) is installed outside the valve body (102).

6. A silent intelligent controlled submersible pump according to claim 3, characterized in that: The valve cover (101) is provided with a water outlet hole (1012).

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