Water supply pressure self-adaptive booster pump

Abstract

The utility model discloses a water supply pressure self-adaptive booster pump, which comprises a booster pump main body with a motor and an impeller, a control circuit board and a water flow switch, and is characterized in that the booster pump main body is also provided with a pressure sensor for detecting the water outlet pressure; the pressure sensor is connected to the memory and is used for storing the detection pressure of the pressure sensor when the machine is stopped last time; the memory is connected to the control circuit board so as to provide the stored detection pressure to the control circuit board; the control circuit board is connected to the pressure sensor and the booster pump body and used for receiving the current detection pressure of the pressure sensor and controlling starting and stopping of the booster pump body. The pressure sensor capable of obtaining the pressure value is used for replacing a pressure switch, the storage is connected with the pressure sensor to store the detection pressure of the pressure sensor, meanwhile, the storage is connected to the control circuit board, the control circuit board can take the stored detection pressure as a starting pressure reference, and therefore self-adaption of the water supply pressure is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of booster pumps and relates to a water supply pressure self-adaptive booster pump. Background Art

[0002] A booster pump is a common pump used to increase water pressure. Its working principle is mainly as follows: the booster pump creates a low-pressure area through the rotation of the impeller and draws water from the water source; when the impeller rotates, it converts electrical energy into kinetic energy of water, and the water is accelerated under the action of the impeller; as the water moves from the center of the impeller to the edge, the speed gradually slows down, and the kinetic energy is converted into pressure energy, resulting in an increase in water pressure; the outer casing of the booster pump, the pump casing or the guide casing, guides the high-speed water flow thrown out by the impeller to the outlet, forming a stable water flow.

[0003] The start and stop of the booster pump depends on the pressure. A pressure switch and a water flow switch are designed at the water inlet and outlet of the booster pump. When there is no water flow in the water pump and the system water pressure exceeds the set value of the pressure switch, the water pump will shut down; after shutdown, when there is water flow in the water pump and the system pressure drops to the set value of the pressure switch, the water pump will start automatically.

[0004] The above structure has a defect, that is, the setting value of the pressure switch is pre-set. When the user pumps water, the water pump head is lost due to water absorption, so that the pressure of the pipeline system does not exceed the setting value of the pressure switch. The circuit board will mistakenly judge that there is a lack of water and enter the water shortage protection state. When the head of the user's actual use scenario is too high, the faucet will be opened, and the water pump will not drop below the setting value of the pressure switch. The water pump will not start automatically. In this case, the user can only adjust the size of the pressure switch to make the water pump work normally. Utility Model Content

[0005] The purpose of the utility model is to provide a water supply pressure self-adaptive booster pump in view of the above problems.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A water supply pressure adaptive booster pump, comprising a booster pump body having a motor and an impeller, a control circuit board and a water flow switch, characterized in that a pressure sensor for detecting the water pressure is also provided on the booster pump body, and the pressure sensor is connected to a memory for storing the detection pressure of the pressure sensor at the last shutdown;

[0008] The memory is connected to the control circuit board to provide the stored detection pressure to the control circuit board;

[0009] The control circuit board is connected to the pressure sensor and the booster pump body to receive the current detection pressure of the pressure sensor and control the start and stop of the booster pump body.

[0010] In the above-mentioned water supply pressure adaptive booster pump, the motor comprises a rotating shaft and a motor housing, and the control circuit board is fixedly mounted on the motor housing;

[0011] A motor seat for installing the boost pump at a target position extends below the motor housing.

[0012] In the above-mentioned water supply pressure adaptive booster pump, a display screen is fixed above the control circuit board.

[0013] In the above-mentioned water supply pressure adaptive booster pump, the booster pump body is connected to an inlet and outlet water separation chamber having a water inlet and a water outlet;

[0014] The pressure sensor is arranged at the water outlet to detect the water outlet pressure;

[0015] The water flow switch is arranged at the water inlet for detecting the water flow.

[0016] In the above-mentioned water supply pressure adaptive booster pump, the inlet and outlet water separation chamber has an impeller chamber;

[0017] The water flow path from the water inlet to the water outlet is in a roughly U-shaped structure in the water inlet and outlet separation chamber;

[0018] The impeller chamber is located at the turning point of the water flow passage, and the impeller is supported by the rotating shaft of the motor in the impeller chamber and rotates in the impeller chamber as the rotating shaft rotates.

[0019] In the above-mentioned water supply pressure adaptive booster pump, the inner wall of the impeller chamber is provided with a water inlet connecting port and a water outlet connecting port. The water inlet connecting port passes through the water inlet and the impeller chamber, and the water outlet connecting port passes through the water outlet and the impeller chamber. Under the action of the impeller, the water flow flowing into the impeller chamber from the water inlet connecting port is pressurized and then sent to the water outlet from the water outlet connecting port.

[0020] In the above-mentioned water supply pressure adaptive booster pump, the impeller compartment upper cover is provided with a shielding sleeve, the rotating shaft passes through the shielding sleeve, and the impeller is located on the side of the shielding sleeve away from the motor so that the shielding sleeve separates the motor from the water flow.

[0021] In the above-mentioned water supply pressure self-adaptive booster pump, a booster tank is also provided on the water inlet and outlet separation chamber between the water inlet and the water outlet.

[0022] In the above-mentioned water supply pressure adaptive booster pump, the inlet and outlet water separation chamber has a booster tank connection port with an internal thread, and the booster tank connection port is connected to the water flow path, the booster tank includes a tank port with an external thread, and the booster tank is arranged in the inlet and outlet water separation chamber through a threaded connection.

[0023] In the above-mentioned water supply pressure adaptive booster pump, the motor is a through-type motor with rotating shafts on both sides of the motor, the rotating shaft on one side is used to connect to the impeller, and the other side is connected to the heat dissipation blades.

[0024] Compared with the existing technology, the advantages of the utility model are:

[0025] 1. Use a pressure sensor that can obtain pressure values ​​instead of a pressure switch, and connect the memory to the pressure sensor to store the detection pressure of the pressure sensor. At the same time, connect the memory to the control circuit board so that the control circuit board can use the stored detection pressure as a starting pressure reference, thereby achieving water supply pressure self-adaptation;

[0026] 2. Design a display screen that can intuitively display the current system pressure;

[0027] 3. Design an inlet and outlet water separation chamber with a water flow passage of a roughly U-shaped structure, and design an impeller chamber in the inlet and outlet water separation chamber. The design of the water inlet and outlet ports on the inner wall of the impeller chamber can make the water flow entering the water inlet port just fall on the impeller blades. After the water flow is accelerated by the blades on the impeller, it is thrown out to the water outlet port by centrifugal force, which has a higher boosting efficiency;

[0028] 4. Designing a booster tank can reduce the number of times the booster pump is frequently started, especially overcoming the frequent start and stop of the booster pump caused by slight fluctuations in water pressure, thereby extending the service life of the booster pump.

[0029] Other advantages, objectives and features of the present invention will be embodied in part through the following description, and in part will be understood by those skilled in the art through research and practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 The utility model is a structure of a water supply pressure adaptive booster pump Figure 1 ;

[0031] Figure 2 The utility model is a structure of a water supply pressure adaptive booster pump Figure 2 ;

[0032] Figure 3 This is a circuit structure diagram of the utility model water supply pressure self-adaptive booster pump;

[0033] Figure 4 It is a structural diagram of the water inlet and outlet separation chamber in the water supply pressure self-adaptive booster pump of the utility model;

[0034] Figure 5 It is a schematic diagram of the water flow path in and out of the water separation chamber in the water supply pressure self-adaptive booster pump of the utility model;

[0035] Figure 6 This is a structural diagram of the positional relationship between the inlet and outlet water separation chamber, the impeller and the motor in the water supply pressure self-adaptive booster pump of the utility model;

[0036] Figure 7 This is a structural diagram of the positional relationship between the inlet and outlet water separation chamber, the impeller, the shielding sleeve and the motor in the water supply pressure self-adaptive booster pump of the utility model;

[0037] Figure 8 It is a structural diagram of a shielding sleeve in a water supply pressure self-adaptive booster pump of the utility model;

[0038] Fig. 9 It is a structural diagram of the utility model water supply pressure self-adaptive booster pump with the motor cover removed.

[0039] In the figure: booster pump body 1; motor 11; impeller 12; motor housing 13; motor seat 14; rotating shaft 15; motor cover 16; control circuit board 2; display screen 21; water flow switch 3; pressure sensor 4; memory 5; inlet and outlet water separation chamber 6; water inlet 61; water outlet 62; impeller chamber 63; water inlet connecting port 64; water outlet connecting port 65; booster tank connecting port 66; pressure sensor installation position 67; shielding sleeve 7; booster tank 8; heat dissipation blades 9. DETAILED DESCRIPTION

[0040] The utility model is further described below in conjunction with the accompanying drawings.

[0041] like Figure 1-Figure 3 As shown, the present embodiment provides a water supply pressure adaptive booster pump, including a booster pump body 1 having a motor 11 and an impeller 12, a control circuit board 2 and a water flow switch 3. The booster pump body 1 is the core component of the booster pump, which is in direct contact with water and is used to provide pressure and flow. The booster pump body 11 is connected to the control circuit board 2, and the control circuit board 2 receives signals such as sensors and controls the operation of the pump to maintain a constant water pressure. The water flow switch 3 is used to detect whether there is water flowing in the system. When water flow is detected, a signal is sent to the control circuit board 2, and the control circuit board 2 controls the pump to start. When the water flow stops, a signal is also sent to the control circuit board 2, and the control circuit board 2 controls the pump to stop.

[0042] The booster pump body 1 is also provided with a pressure sensor 4 for detecting the outlet water pressure. The pressure sensor 4 is connected to the memory 5 to store the detection pressure of the pressure sensor 4 at the last shutdown. The pressure sensor 4 can be directly connected to the memory to send the detection value to the memory 5. During the operation of the booster pump, the detection value of the pressure sensor 4 will continue to be received until the booster pump is shut down to save the latest detection value, that is, the detection pressure of the pressure sensor 4 at the last shutdown. Of course, the pressure sensor 4 can also be connected to the memory 5 through the controller in the control circuit board 2. The memory 5 still receives the detection value of the pressure sensor 4 through the controller during the operation of the booster pump until the booster pump is shut down to save the latest detection value, that is, the detection pressure of the pressure sensor 4 at the last shutdown. The pressure sensor 4 is also arranged on the control circuit board 2.

[0043] At the same time, the control circuit board 2 is connected to the pressure sensor 4, the booster pump body 1 and the memory 5. The control circuit board receives the detection pressure of the pressure sensor 4, and uses the detection value received from the memory 5 as the starting pressure, or uses the detection value received from the memory 5 as the starting pressure after a certain processing. There is no limitation here, and those skilled in the art can design it as needed. The control circuit board 2 starts and stops the booster pump body 1 according to the actual situation. This part of the principle is consistent with the booster pump in the prior art and will not be repeated here.

[0044] In a traditional booster pump, the pressure sensor 4 here is a pressure switch. When the water pressure in the system is lower than the set value of the pressure switch, the pressure switch will detect this change and send a signal to the control circuit board 2. The control circuit board 2 controls the booster pump to start according to the signal. Since the set value of the pressure switch is a pre-set value, it is easy for the water pump to fail to work properly due to different actual application scenarios, and the user needs to make manual adjustments. This solution uses a pressure sensor 4 that can obtain a pressure value instead of a pressure switch, and connects the pressure sensor 4 to the memory 5 to store the detection pressure of the pressure sensor 4. At the same time, the memory 5 is connected to the control circuit board 2, so that the control circuit board 2 can use the stored detection pressure as a reference for the starting pressure, and thus achieve the effect of pressure adaptation.

[0045] Furthermore, the motor 11 includes a rotating shaft 15 and a motor housing 13, the control circuit board 2 is fixedly mounted on the motor housing 13, and a motor seat 14 for mounting the booster pump at a target position extends below the motor housing 13. A display screen 21 is fixed above the control circuit board 2, and the display screen 21 is connected to the controller of the control circuit board 2, and is used to display the current system pressure, so that the user can intuitively obtain the pressure detection value.

[0046] Specifically, Figure 4As shown, the booster pump body 1 is connected to the water inlet and outlet separation chamber 6 having a water inlet 61 and a water outlet 62. The water inlet and outlet separation chamber 6 is located beside the water outlet 62 and has a sensor installation position 67 connected to the inside of the water inlet and outlet separation chamber 6, and the water pressure is detected by the pressure sensor 4 installed there. The water flow switch 3 is arranged at the water inlet 61 for detecting the water flow.

[0047] Furthermore, the inlet and outlet water separation chamber 6 has an impeller chamber 63, such as Figure 5 As shown, the water flow path from the water inlet 61 to the water outlet 62 is roughly U-shaped in the water inlet and outlet separation chamber 6. The impeller chamber 63 is located at the turning point of the water flow path, as shown in FIG. Figure 6 As shown, the impeller 12 is supported by the rotating shaft 15 of the motor 11 in the impeller chamber 63, and rotates in the impeller chamber 63 as the rotating shaft 15 rotates. The inner wall of the impeller chamber 63 is provided with a water inlet connection port 64 and a water outlet connection port 65. The water inlet connection port 64 is connected to the water inlet 61 and the impeller chamber 63, and the water outlet connection port 65 is connected to the water outlet 62 and the impeller chamber 63. Under the action of the impeller 12, the water flow flowing into the impeller chamber 63 from the water inlet connection port 64 is pressurized and then sent to the water outlet 62 from the water outlet connection port 65. When the pump is running, the impeller 12 generates centrifugal force through rotation, thereby applying energy to the water, increasing the flow rate and pressure of the water. When the booster pump is working, water is continuously sucked into the impeller chamber 63, and then accelerated by the blades on the impeller 12 and thrown out to the water outlet connection port 65. This process enables the water to obtain kinetic energy, thereby increasing the pressure of the water.

[0048] This solution designs the water inlet and outlet separation chamber 6, and realizes a water flow passage with a roughly U-shaped structure in the chamber, and at the same time, the impeller 12 is arranged at the turning point, which can better control the direction and speed of the water flow, and help optimize the hydraulic performance of the entire system. In addition, the design of the water inlet connection port 64 and the water outlet connection port 65 on the inner wall of the impeller chamber 63 can make the water flow entering the water inlet connection port 64 just fall on the blades of the impeller 12, and the water flow is accelerated by the blades on the impeller 12 and thrown out to the water outlet connection port 65 by centrifugal force, which has a higher supercharging efficiency.

[0049] Furthermore, if Figure 7 and Figure 8 As shown, the upper cover of the impeller chamber 63 is provided with a shielding sleeve 7, which can be made of stainless steel and fixed to the inlet and outlet water separation chamber 6 by bolts. The rotating shaft 15 passes through the shielding sleeve 7, and a sealed bearing is designed between the rotating shaft 15 and the shielding sleeve. The impeller 12 is located on the side of the shielding sleeve 7 away from the motor 11 so that the shielding sleeve 7 separates the motor 11 from the water flow.

[0050] Furthermore, in this embodiment, a booster tank 8 is further provided between the water inlet 61 and the water outlet 62 on the water inlet and outlet separation chamber 6, and a booster tank connection port 66 with internal threads is provided on the water inlet and outlet separation chamber 6, and the booster tank connection port 66 is connected to the water flow path, and the booster tank 8 includes a tank port with external threads, and the booster tank 8 is provided on the water inlet and outlet separation chamber 6 through a threaded connection. The booster tank 8 is used to store a certain amount of water to adapt to slight fluctuations in water pressure, which can reduce the number of frequent starts of the booster pump, especially overcome the frequent start and stop of the booster pump caused by slight fluctuations in water pressure, thereby extending the service life of the booster pump.

[0051] Furthermore, if Fig. 9 As shown, the motor 11 adopts a through-type motor with a rotating shaft 15 on both sides of the motor 11. The rotating shaft 15 on one side is used to connect the impeller 12, and the other side is connected with a heat dissipation blade 9. This solution directly uses the motor of the booster pump body 1 and adopts a motor with a rotating shaft on both sides. The heat dissipation blade is connected on the side away from the impeller. The heat dissipation can be achieved while the booster pump is working. There is no need to design an additional heat dissipation structure, and the booster pump can be guaranteed to have a good heat dissipation effect.

[0052] 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 without departing from the spirit of the present invention.

[0053] Although this article uses more terms such as booster pump body 1; motor 11; impeller 12; motor housing 13; motor seat 14; rotating shaft 15; motor cover 16; control circuit board 2; display screen 21; water flow switch 3; pressure sensor 4; storage 5; water inlet and outlet separation chamber 6; water inlet 61; water outlet 62; impeller chamber 63; water inlet connecting port 64; water outlet connecting port 65; booster tank connecting port 66; pressure sensor installation position 67; shielding sleeve 7; booster tank 8; heat dissipation blade 9, it does not exclude the possibility of using other terms. The use of these terms is only for more convenient description and explanation of the essence of the utility model, and interpreting them as any additional restrictions is contrary to the spirit of the utility model.

Claims

1. A water supply pressure adaptive booster pump, comprising a booster pump body (1) having a motor (11) and an impeller (12), a control circuit board (2) and a water flow switch (3), characterized in that: The booster pump body (1) is also provided with a pressure sensor (4) for detecting the outlet water pressure, and the pressure sensor (4) is connected to a memory (5) for storing the detection pressure of the pressure sensor (4) at the last shutdown; The memory (5) is connected to the control circuit board (2) to provide the stored detection pressure to the control circuit board (2); The control circuit board (2) is connected to the pressure sensor (4) and the booster pump body (1) so as to receive the current detection pressure of the pressure sensor (4) and control the start and stop of the booster pump body (1).

2. The water supply pressure adaptive booster pump according to claim 1, characterized in that: The motor (11) comprises a rotating shaft (15) and a motor housing (13), and the control circuit board (2) is fixedly mounted on the motor housing (13); A motor seat (14) for installing the booster pump at a target position extends below the motor housing (13).

3. The water supply pressure adaptive booster pump according to claim 2, characterized in that: A display screen (21) is fixed above the control circuit board (2).

4. The water supply pressure adaptive booster pump according to claim 1, characterized in that: The booster pump body (1) is connected to an inlet and outlet water separation chamber (6) having a water inlet (61) and a water outlet (62); The pressure sensor (4) is arranged at the water outlet (62) to detect the outlet water pressure; The water flow switch (3) is arranged at the water inlet (61) for detecting water flow.

5. The water supply pressure adaptive booster pump according to claim 4, characterized in that: The inlet and outlet water separation chamber (6) is provided with an impeller chamber (63); The water flow path from the water inlet (61) to the water outlet (62) in the water inlet and outlet separation chamber (6) is roughly U-shaped; The impeller chamber (63) is located at the turning point of the water flow path, and the impeller (12) is supported in the impeller chamber (63) by the rotating shaft (15) of the motor (11), and rotates in the impeller chamber (63) as the rotating shaft (15) rotates.

6. The water supply pressure adaptive booster pump according to claim 5, characterized in that: The inner wall of the impeller chamber (63) is provided with a water inlet connecting port (64) and a water outlet connecting port (65); the water inlet connecting port (64) is connected to the water inlet (61) and the impeller chamber (63); the water outlet connecting port (65) is connected to the water outlet (62) and the impeller chamber (63); under the action of the impeller (12), the water flow flowing into the impeller chamber (63) from the water inlet connecting port (64) is pressurized and then sent to the water outlet (62) from the water outlet connecting port (65).

7. The water supply pressure adaptive booster pump according to claim 6, characterized in that: The upper cover of the impeller chamber (63) is provided with a shielding sleeve (7), the rotating shaft (15) passes through the shielding sleeve (7), and the impeller (12) is located on a side of the shielding sleeve (7) away from the motor (11) so that the shielding sleeve (7) separates the motor (11) from the water flow.

8. The water supply pressure adaptive booster pump according to claim 5, characterized in that: A booster tank (8) is also provided on the water inlet and outlet separation chamber (6) between the water inlet (61) and the water outlet (62).

9. The water supply pressure adaptive booster pump according to claim 8, characterized in that: The water inlet and outlet separation chamber (6) has a booster tank connection port (66) with an internal thread, and the booster tank connection port (66) is connected to the water flow path. The booster tank (8) includes a tank port with an external thread, and the booster tank (8) is arranged on the water inlet and outlet separation chamber (6) through a threaded connection.

10. The water supply pressure adaptive booster pump according to claim 1, characterized in that: The motor (11) is a through-type motor having rotating shafts (15) on both sides of the motor (11), wherein the rotating shaft (15) on one side is used to connect to the impeller (12), and the other side is connected to a heat dissipation blade (9).

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