Vacuum starting device for water pump

Abstract

The utility model relates to a water pump vacuum starting device which comprises a vacuum tank and a liquid storage tank, the vacuum tank is provided with an air suction port used for being communicated with a vacuum node above a water pump, two vacuum pumps are oppositely arranged on the vacuum tank, and a gas balancing pipeline assembly is communicated between the vacuum pumps and the vacuum tank. The vacuum pump is used for pumping out internal gas of the vacuum tank to form negative pressure, a pressure transmitter is arranged on the vacuum tank and used for detecting the internal pressure of the vacuum tank, a controller is arranged on the vacuum tank, a liquid drainage pipeline assembly is arranged on the vacuum tank, and the controller is used for controlling the liquid drainage pipeline assembly. The pressure in the vacuum tank can be monitored in real time through the controller and the pressure transmitter, start and stop of the vacuum pump are controlled, automation of start, operation and maintenance of the vacuum pump is achieved, manual operation is reduced, and the influence of human factors on stable operation of the system is reduced.

Description

Technical Field

[0001] The present application relates to the technical field of water pumps, and in particular to a water pump vacuum starting device. Background Art

[0002] In fields such as water conservancy, municipal administration, and industrial water treatment, starting large water pumps often faces the challenge of the water level falling below the pump shaft. Traditionally, this problem has been addressed through manual water injection, but this method has significant limitations. First, the pump room design must be deep underground to access the low water level, increasing the risk of equipment being submerged. Second, manual operation is cumbersome and time-consuming, relying heavily on the operator's experience and judgment, and also presents certain safety risks. Furthermore, the large diameter of the suction pipe of large water pumps and the huge amount of water injection result in long startup times, affecting production efficiency.

[0003] To overcome the limitations of traditional manual watering, vacuum water diversion technology has emerged. This technology uses a vacuum to rapidly draw water from a low level to above the top of the pump casing, enabling rapid pump startup. Its advantages include rapid startup, safe and reliable operation, and a high level of intelligence. It is particularly suitable for large pumps and large suction pipes.

[0004] However, commonly used vacuum water diversion systems consist of multiple devices, including vacuum pumps, vacuum tanks, and control valves. When multiple water pumps are used, manual operations often require frequent activation of the vacuum pumps to evacuate and fill each pump with water, resulting in a cumbersome and limited automation. Furthermore, when the system is running, air from the pump's suction line and casing is drawn into the vacuum tank. This air carries with it a certain amount of water, making existing drainage methods inefficient and inconvenient, impacting equipment performance and service life.

[0005] In view of the above problems, a water pump vacuum starting device is now designed. Utility Model Content

[0006] The embodiment of the present application provides a water pump vacuum starting device to solve the problem that the vacuum water diversion device commonly used in the related art requires manual frequent starting of the vacuum pump, which is relatively cumbersome to operate.

[0007] In a first aspect, a water pump vacuum starting device is provided, comprising:

[0008] A vacuum tank and a liquid storage tank, wherein the vacuum tank has an air intake port for communicating with the vacuum node above the water pump, and two vacuum pumps are arranged opposite to each other on the vacuum tank. A balancing gas pipeline assembly is connected between the vacuum pump and the vacuum tank, and the vacuum pump is used to extract the internal gas of the vacuum tank to form a negative pressure. The vacuum tank is provided with a pressure transmitter for detecting the internal pressure of the vacuum tank, and the vacuum tank is provided with a controller for controlling the start and stop of the vacuum pump;

[0009] When the pressure transmitter detects that the pressure of the vacuum tank drops to a certain value, the controller controls the vacuum pump to stop; when the pressure transmitter detects that the pressure of the vacuum tank rises to a certain value, the controller controls the vacuum pump to start;

[0010] A liquid discharge line assembly is provided on the vacuum tank, and the liquid discharge line assembly is used to allow the liquid inside the vacuum tank to flow into the liquid storage tank.

[0011] In some embodiments, the balancing gas pipeline assembly includes a check valve, a manual ball valve and a balancing gas pipeline connected in sequence from bottom to top, the other end of the check valve is connected to the air inlet of the vacuum pump, and the other end of the balancing gas pipeline is connected to the vacuum tank.

[0012] In some embodiments, the drainage pipeline assembly includes a balancing gas delivery pipe and a liquid delivery pipe arranged between the vacuum tank and the liquid storage tank. The balancing gas delivery pipe is used to adjust the pressure in the vacuum tank to be consistent with that in the liquid storage tank, and the liquid delivery pipe is used to flow the water in the vacuum tank downstream to the inside of the liquid storage tank.

[0013] In some embodiments, the balancing gas delivery pipe includes a second balancing gas pipeline, on which a first solenoid valve is provided, and one end of the second balancing gas pipeline is connected to the upper portion of the side wall of the vacuum tank, and the other end thereof is connected to the upper portion of the side wall of the liquid storage tank;

[0014] The liquid delivery pipe includes a delivery pipe, on which a second solenoid valve is provided. One end of the delivery pipe is connected to the lower part of the side wall of the vacuum tank, and the other end is connected to the upper part of the side wall of the liquid storage tank.

[0015] In some embodiments, a waste liquid conveying line is further included, wherein the waste liquid conveying line is used to discharge the liquid collected in the liquid storage tank;

[0016] The waste liquid conveying line comprises:

[0017] a liquid discharge pipe in communication with the liquid storage tank;

[0018] A discharge solenoid valve provided on the discharge pipe;

[0019] A balancing gas solenoid valve is provided on the balancing gas pipeline 2.

[0020] In some embodiments, a high liquid level electrode located at the top and a low liquid level electrode located at the bottom are provided inside the liquid storage tank, and the high liquid level electrode and the low liquid level electrode are electrically connected to the controller respectively;

[0021] The high liquid level electrode is used to detect the high liquid level inside the liquid storage tank, and the low liquid level electrode is used to detect the low liquid level inside the liquid storage tank.

[0022] In some embodiments, a liquid level electrode and an alarm are provided on the vacuum tank, a manual drain valve is provided at the bottom of the vacuum tank, the liquid level electrode is located in the middle of the vacuum tank, and the liquid level electrode and the alarm are electrically connected to the controller respectively;

[0023] The liquid level electrode is used to detect the liquid level inside the vacuum tank.

[0024] In some embodiments, a connecting frame is provided between the vacuum tank and the liquid storage tank, the vacuum tank and the liquid storage tank are arranged from top to bottom, the connecting frame is cylindrical, and a through hole for extending a manual drain valve is opened on the connecting frame;

[0025] A bottom plate is provided at the bottom of the liquid storage tank.

[0026] An embodiment of the present application provides a water pump vacuum starting device, which uses a vacuum pump to treat the negative pressure of a vacuum tank, so that the water suction pipe, shell and other parts of the water pump form negative pressure in advance, thereby improving the starting efficiency. The pressure in the vacuum tank is monitored in real time by a controller and a pressure transmitter, and the start and stop of the vacuum pump are accurately controlled according to the set value, so that the start-up, operation and maintenance of the vacuum pump are automated, the need for manual operation is reduced, and the impact of human factors on the stable operation of the system is reduced. At the same time, unnecessary energy consumption is avoided, and energy conservation and emission reduction are achieved. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 Schematic diagram of the three-dimensional structure provided in the embodiment of this application Figure 1 ;

[0029] Figure 2 Schematic diagram of the three-dimensional structure provided in the embodiment of this application Figure 2 ;

[0030] Figure 3 A three-dimensional schematic diagram of the connection structure of the drainage pipeline assembly provided in an embodiment of the present application;

[0031] Figure 4 A three-dimensional schematic diagram of the waste liquid conveying line connection structure provided in an embodiment of the present application;

[0032] Figure 5 This is a front view of an embodiment of the present application.

[0033] In the figure: 1. Vacuum tank; 2. Liquid storage tank; 3. Vacuum pump; 4. Balancing gas pipeline assembly; 41. Check valve; 42. Manual ball valve; 43. Balancing gas pipeline; 5. Pressure transmitter; 6. Controller; 7. Drain pipeline assembly; 71. Balancing gas delivery pipe; 711. Balancing gas pipeline 2; 712. Solenoid valve 1; 72. Liquid delivery pipe; 721. Delivery pipe; 722. Solenoid valve 2; 8. Waste liquid delivery line; 81. Drain pipe; 82. Drain solenoid valve; 83. Balancing gas solenoid valve; 9. High liquid level electrode; 10. Low liquid level electrode; 11. Liquid level electrode; 12. Bottom plate; 13. Manual drain valve; 14. Connecting frame. DETAILED DESCRIPTION

[0034] To make the purpose, technical solutions, and advantages of the embodiments of this application more clear, the technical solutions in the embodiments of this application will be clearly and completely described below in conjunction with the drawings in the embodiments of this application. Obviously, the described embodiments are part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of this application.

[0035] The embodiment of the present application provides a water pump vacuum starting device, which can solve the problem that the vacuum water diversion device commonly used in the related art requires manual frequent starting of the vacuum pump, which is relatively cumbersome to operate.

[0036] See also Figure 1-Figure 3 A water pump vacuum starting device comprises a vacuum tank 1 and a liquid storage tank 2. The vacuum tank 1 has an air intake port for communicating with a vacuum node above the water pump. Two vacuum pumps 3 are disposed on the vacuum tank 1, with a balance gas pipeline assembly 4 connecting the vacuum pumps 3 and the vacuum tank 1. The vacuum pumps 3 are used to extract gas from the vacuum tank 1 to create a negative pressure. The vacuum tank 1 is provided with a pressure transmitter 5 for detecting the internal pressure of the vacuum tank 1. The vacuum tank 1 is provided with a controller 6 for controlling the start and stop of the vacuum pumps 3. The controller is electrically connected to the pressure transmitter 5. When the pressure transmitter 5 detects that the pressure in the vacuum tank 1 drops to a certain value, the controller 6 controls the vacuum pumps 3 to stop. When the pressure transmitter 5 detects that the pressure in the vacuum tank 1 rises to a certain value, the controller 6 controls the vacuum pumps 3 to start. A liquid discharge pipeline assembly 7 is provided on the vacuum tank 1 for draining liquid from the vacuum tank 1 into the liquid storage tank 2.

[0037] The device is mainly based on the vacuum pump 3 to extract the gas in the vacuum tank 1 and control the pressure to achieve efficient startup and operation maintenance of the water pump. The specific process is as follows:

[0038] Startup phase:

[0039] When the system starts, vacuum pump 3 is first activated. It draws the gas from vacuum tank 1 through its outlet and discharges it into the atmosphere, creating a negative pressure environment within vacuum tank 1. Simultaneously, the suction port of vacuum tank 1 is connected to the vacuum node above the water pump. This design creates a negative pressure in the water pump's suction pipe, pump housing, and connected components, facilitating a smooth startup of the water pump.

[0040] At the same time, a pressure transmitter 5 is installed on the vacuum tank 1 to monitor pressure changes within the tank in real time and transmit this information to the controller 6. When the pressure within the vacuum tank 1 drops to a set rated value, indicating that the negative pressure has reached a predetermined level, the controller 6 immediately controls the vacuum pump 3 to stop operation to save energy and avoid over-vacuuming. As the water pump continues to operate, the pressure within the vacuum tank 1 may gradually increase due to various factors such as changes in water temperature and gas release in the water pump and pipelines. When the pressure rises to another set rated value, the controller 6 restarts the vacuum pump 3 to continue extracting gas from the tank and maintain the negative pressure.

[0041] Drainage function:

[0042] During system operation, the water pump's suction line, pump housing, and other components absorb air, often containing a certain amount of water. To prevent this water from accumulating within the system and affecting operational efficiency, the drain line assembly 7 drains the water from the vacuum tank 1, maintaining a clean and efficient system.

[0043] By applying negative pressure to the vacuum tank 1 through the vacuum pump 3, negative pressure is formed in the water suction pipe, shell and other parts of the water pump in advance, thereby improving the starting efficiency. At the same time, the resistance when the water pump is started is greatly reduced, which helps to reduce the gas accumulation in the water pump and pipeline, reduces the risk of unstable operation of the water pump due to gas blockage, and enhances the overall stability of the system.

[0044] The pressure in the vacuum tank 1 is monitored in real time through the controller 6 and the pressure transmitter 5, and the start and stop of the vacuum pump 3 are accurately controlled according to the set value, so that the start-up, operation and maintenance of the vacuum pump 3 are automated, the need for manual operation is reduced, and the impact of human factors on the stable operation of the system is reduced. At the same time, unnecessary energy consumption is avoided, and energy conservation and emission reduction are achieved.

[0045] Regularly draining the moisture from the vacuum tank 1 reduces the corrosion and wear of the interior of the equipment caused by the moisture, and helps to extend the service life of the water pump and other related equipment.

[0046] In this embodiment, the internal pressure of the vacuum tank 1 is set at -60 KPa to -95 KPa.

[0047] Startup conditions: When the internal pressure of vacuum tank 1 reaches -60 kPa, the control system will send a signal to start vacuum pump 3. After the vacuum pump starts running, it will further extract the air in the vacuum tank, causing the pressure in the tank to continue to drop until the required vacuum degree is reached.

[0048] Stop condition: When the internal pressure of vacuum tank 1 drops to -95 kPa, the control system will detect this change and send a signal to stop vacuum pump 3. At this time, the vacuum degree in the vacuum tank is sufficient to support the water pump's water priming operation, and there is no need to continue vacuuming.

[0049] Specifically, the balancing gas pipeline assembly 4 in this embodiment includes a check valve 41, a manual ball valve 42 and a balancing gas pipeline 43 connected in sequence from bottom to top. The other end of the check valve 41 is connected to the air inlet of the vacuum pump 3, and the other end of the balancing gas pipeline 43 is connected to the vacuum tank 1. The other end of the balancing gas pipeline 43 is arranged above the side wall of the vacuum tank 1.

[0050] The check valve 41 is installed at the lower end of the balance gas pipeline assembly 4, and its function is to prevent the gas from flowing back to the vacuum tank 1 when the vacuum pump 3 stops working.

[0051] The manual ball valve 42 is located above the check valve 41 and is used to control the on / off of the balance gas pipeline assembly 4. During system maintenance or overhaul, the gas passage between the vacuum pump 3 and the vacuum tank 1 can be cut off by closing the manual ball valve 42 to ensure safe operation.

[0052] The balancing gas pipe 43 is a channel for gas flow, one end of which is connected to the manual ball valve 42, and the other end is arranged above the side wall of the vacuum tank 1 and is connected thereto, so that the vacuum pump 3 can smoothly extract gas from the top of the vacuum tank 1 when working, forming a top-down airflow path, which helps to discharge the gas in the vacuum tank 1 faster and more thoroughly, and accelerate the formation of a negative pressure environment.

[0053] The provision of the manual ball valve 42 provides convenience for system maintenance or overhaul, and also provides the possibility of quickly cutting off the gas path in the event of a system failure, thereby enhancing the safety of the system.

[0054] Specifically, the drainage pipeline assembly 7 in this embodiment includes a balancing gas delivery pipe 71 and a liquid delivery pipe 72 arranged between the vacuum tank 1 and the liquid storage tank 2. The balancing gas delivery pipe 71 is used to adjust the pressure in the vacuum tank 1 and the liquid storage tank 2 to be consistent, and the liquid delivery pipe 72 is used to flow the water in the vacuum tank 1 downstream to the inside of the liquid storage tank 2.

[0055] Balancing gas pipe 71 connects between vacuum tank 1 and liquid storage tank 2. Its primary function is to regulate the pressure within the two tanks to maintain consistency. During the drainage process, as the liquid within vacuum tank 1 is expelled, the pressure within the tanks may fluctuate. To prevent poor liquid flow or gas backflow caused by pressure differences, balancing gas pipe 71 allows an appropriate amount of gas to flow between the two tanks, maintaining pressure equilibrium.

[0056] The liquid delivery pipe 72 is also connected between the vacuum tank 1 and the liquid storage tank 2 , but its main function is to smoothly discharge the water in the vacuum tank 1 into the liquid storage tank 2 .

[0057] By separating and balancing the gas delivery pipe 71 and the liquid delivery pipe 72, the orderly flow of gas and liquid during the drainage process is ensured, mutual interference is avoided, and the drainage efficiency is improved.

[0058] The design of the balanced gas delivery pipe 71 enables the pressure between the vacuum tank 1 and the liquid storage tank 2 to be kept consistent, avoiding poor liquid flow or gas backflow due to pressure difference, and ensuring stable operation of the system.

[0059] Furthermore, the balancing gas delivery pipe 71 in this embodiment includes a second balancing gas pipeline 711, on which a first solenoid valve 712 is provided. One end of the second balancing gas pipeline 711 is connected to the upper portion of the side wall of the vacuum tank 1, and the other end thereof is connected to the upper portion of the side wall of the liquid storage tank 2.

[0060] The liquid delivery pipe 72 includes a delivery pipe 721 , on which a second solenoid valve 722 is provided. One end of the delivery pipe 721 is connected to the lower part of the side wall of the vacuum tank 1 , and the other end is connected to the upper part of the side wall of the liquid storage tank 2 .

[0061] The balancing gas delivery pipe 71 primarily consists of a second balancing gas pipe 711 and a first solenoid valve 712. One end of the second balancing gas pipe 711 connects to the upper sidewall of the vacuum tank 1, and the other end connects to the upper sidewall of the liquid storage tank 2. This design facilitates rapid pressure balancing between the two tanks when needed. A first solenoid valve 712 is mounted on the second balancing gas pipe 711 to control the flow of gas.

[0062] Liquid delivery pipe 72 primarily consists of a delivery pipe 721 and a second solenoid valve 722. One end of delivery pipe 721 communicates with the lower sidewall of vacuum tank 1, while the other end communicates with the upper sidewall of liquid storage tank 2. This design utilizes gravity, allowing water within vacuum tank 1 to naturally flow down into liquid storage tank 2.

[0063] Solenoid valve 2 722 is installed on delivery pipe 721 to control the discharge of liquid. When liquid needs to be discharged, solenoid valve 2 722 will open, allowing water to flow from vacuum tank 1 into liquid storage tank 2. After the discharge is completed, solenoid valve 2 722 will close to prevent liquid backflow or leakage.

[0064] In one embodiment, the present embodiment further includes a waste liquid delivery line 8 for discharging liquid collected in the liquid storage tank 2. The waste liquid delivery line 8 includes: a liquid discharge pipe 81 connected to the liquid storage tank 2; a liquid discharge solenoid valve 82 disposed on the liquid discharge pipe 81; and a balancing gas solenoid valve 83 disposed on the second balancing gas pipeline 711. The first solenoid valve 712 is located at the end of the balancing gas delivery pipe 71 near the vacuum tank 1, and the balancing gas solenoid valve 83 is located at the end of the balancing gas delivery pipe 71 near the liquid storage tank 2.

[0065] In actual operation, first, close the solenoid valve 1 712 and the solenoid valve 2 722 to cut off the pipeline connection between the vacuum tank 1 and the liquid storage tank 2. Since the balancing gas solenoid valve 83 is located at one end of the balancing gas delivery pipe 71 close to the liquid storage tank 2, by opening the balancing gas solenoid valve 83, the liquid storage tank 2 is connected to the external gas, allowing atmospheric air to enter the liquid storage tank 2, so that the pressure in the liquid storage tank 2 is balanced with the atmosphere. Then, open the drain solenoid valve 82 to discharge the liquid inside the liquid storage tank 2 through the drain pipe 81.

[0066] Preferably, the liquid storage tank 2 in this embodiment is provided with a high liquid level electrode 9 located above and a low liquid level electrode 10 located below. The high liquid level electrode 9 and the low liquid level electrode 10 are each electrically connected to the controller 6. The high liquid level electrode 9 is used to detect the high liquid level within the liquid storage tank 2, and the low liquid level electrode 10 is used to detect the low liquid level within the liquid storage tank 2. The liquid discharge solenoid valve 82, the balancing gas solenoid valve 83, the second solenoid valve 722, and the first solenoid valve 712 are each electrically connected to the controller 6.

[0067] The high liquid level electrode 9 and the low liquid level electrode 10 provided inside the liquid storage tank 2 are used to detect the upper and lower limit positions of the liquid in the liquid storage tank, respectively. These two electrodes are electrically connected to the controller 6 and can transmit the liquid level information to the controller 6 in real time.

[0068] When the water level in liquid storage tank 2 rises to the high liquid level electrode 9, it triggers a switch signal, indicating that the liquid storage tank is nearly full or is already full. This signal is transmitted to controller 6. Upon receiving the signal from high liquid level electrode 9, controller 6, according to pre-set control logic, closes solenoid valve 1 712 and solenoid valve 2 722, severing the pipeline connection between vacuum tank 1 and liquid storage tank 2. It then opens the balancing gas solenoid valve 83, allowing atmospheric air to enter the liquid storage tank to balance the pressure. Finally, it opens the drain solenoid valve 82 to begin draining the liquid from the liquid storage tank.

[0069] When the water level in liquid storage tank 2 drops to the low liquid level electrode 10, the electrode triggers a switch signal, indicating that the amount of liquid in liquid storage tank 2 is low and needs to be replenished or drained. When controller 6 receives the signal from low liquid level electrode 10, it executes the operation of shutting off the drain, that is, closing the drain solenoid valve 82 and the balance gas solenoid valve 83, and then reopening solenoid valve 1 712 and, if necessary, solenoid valve 2 722 to restore normal state, so that liquid storage tank 2 collects the liquid inside vacuum tank 1.

[0070] Through real-time monitoring of the high liquid level electrode 9 and the low liquid level electrode 10, and automatic control of the drain solenoid valve 82, the balancing gas solenoid valve 83, the second solenoid valve 722 and the first solenoid valve 712, safety hazards caused by liquid overflow or drying up are avoided.

[0071] Automated control reduces the need for manual intervention and improves system efficiency and stability. The system can quickly respond to changes in liquid levels and perform corresponding discharge or replenishment operations.

[0072] The automated and intelligent control system reduces operational difficulty and complexity, improving user experience and satisfaction. Operators only need to focus on the overall operating status of the system without having to perform frequent manual operations and adjustments.

[0073] In one embodiment, a liquid level electrode 11 and an alarm are provided on the vacuum tank 1, a manual drain valve 13 is provided at the bottom of the vacuum tank 1, the liquid level electrode 11 is located in the middle of the vacuum tank 1, and the liquid level electrode 11 and the alarm are electrically connected to the controller 6 respectively; the liquid level electrode 11 is used to detect the liquid level inside the vacuum tank 1.

[0074] The liquid level electrode 11, located in the center of the vacuum tank 1, monitors the liquid level inside the tank in real time. When the liquid level reaches the rated level, the electrode triggers a switch signal. The electrode is electrically connected to the controller 6, which transmits the switch signal to the controller 6. Upon receiving the signal, the controller 6 immediately triggers an alarm, issuing a fault warning signal. This signal can be audible, visual, or both, alerting the operator to abnormal liquid level conditions in the vacuum tank.

[0075] In some cases, such as when the automatic drain system fails due to equipment maintenance or a malfunction, the liquid in the vacuum tank 1 may not be automatically drained. In this case, manual drain valve 13 can be used for manual draining. The operator simply opens manual drain valve 13 to drain the liquid in the vacuum tank 1, restoring normal system operation or performing necessary maintenance.

[0076] By setting up liquid level electrodes and alarms, the liquid level of the vacuum tank can be monitored in real time, and early warning signals can be issued in time when the liquid level is abnormal, so that staff can promptly discover and deal with abnormal liquid levels and avoid safety accidents such as liquid overflow or equipment damage.

[0077] The provision of the liquid level electrode 11 and the alarm enables the system to automatically detect and respond to abnormal liquid levels, reducing the need for manual intervention and improving the reliability and stability of the system.

[0078] It can be understood that in this embodiment, a connecting frame 14 is provided between the vacuum tank 1 and the liquid storage tank 2, the vacuum tank 1 and the liquid storage tank 2 are arranged from top to bottom, the connecting frame 14 is cylindrical, and a through hole for extending the manual sewage valve 13 is opened on the connecting frame 14; a bottom plate 12 is provided at the bottom of the liquid storage tank 2.

[0079] Top-down layout: The vacuum tank 1 and liquid storage tank 2 are designed to be arranged vertically from top to bottom. This layout helps optimize space utilization, making the entire system more compact and also easier to operate and maintain.

[0080] The connecting frame 14 is designed to be cylindrical, providing sufficient strength while also facilitating machining and installation. The cylindrical structure also offers a certain degree of deformation resistance, helping to maintain system stability. A through-hole is provided in the connecting frame 14, ensuring that the manual drain valve 13 can be easily installed at the bottom of the vacuum tank 1 and operated when needed without being obstructed by the connecting frame.

[0081] The vertical arrangement of the vacuum tank 1 and the liquid storage tank 2 and the cylindrical design of the connecting frame 14 make the entire system compact and occupy a small area, which is conducive to installation and use in a limited space.

[0082] In the description of this application, it should be noted that the terms "upper" and "lower" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be internal communication between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0083] It should be noted that, in this application, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises", "includes" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not explicitly listed, or elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article or device comprising the element.

[0084] The foregoing is merely a list of specific embodiments of the present application, intended to enable those skilled in the art to understand or implement the present application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application is not limited to the embodiments shown herein, but is intended to conform to the broadest scope consistent with the principles and novel features of the present application.

Claims

1. A water pump vacuum starting device, characterized in that: include: A vacuum tank (1) and a liquid storage tank (2), wherein the vacuum tank (1) has an air intake port for communicating with a vacuum node above a water pump, two vacuum pumps (3) are arranged on the vacuum tank (1) in a relative manner, a balance gas pipeline assembly (4) is connected between the vacuum pump (3) and the vacuum tank (1), the vacuum pump (3) is used to extract the internal gas of the vacuum tank (1) to form a negative pressure, the vacuum tank (1) is provided with a pressure transmitter (5), the pressure transmitter (5) is used to detect the internal pressure of the vacuum tank (1), the vacuum tank (1) is provided with a controller (6), the controller (6) is used to control the start and stop of the vacuum pump (3); When the pressure transmitter (5) detects that the pressure of the vacuum tank (1) drops to a certain value, the controller (6) controls the vacuum pump (3) to stop; when the pressure transmitter (5) detects that the pressure of the vacuum tank (1) rises to a certain value, the controller (6) controls the vacuum pump (3) to start; A liquid discharge line assembly (7) is provided on the vacuum tank (1), and the liquid discharge line assembly (7) is used to allow the liquid inside the vacuum tank (1) to flow into the liquid storage tank (2).

2. A water pump vacuum starting device according to claim 1, characterized in that: The balancing gas pipeline assembly (4) comprises a check valve (41), a manual ball valve (42) and a balancing gas pipeline (43) connected in sequence from bottom to top, the other end of the check valve (41) is connected to the air inlet of the vacuum pump (3), and the other end of the balancing gas pipeline (43) is connected to the vacuum tank (1).

3. A water pump vacuum starting device according to claim 1, characterized in that: The liquid discharge line assembly (7) comprises a balancing gas delivery pipe (71) and a liquid delivery pipe (72) arranged between the vacuum tank (1) and the liquid storage tank (2); the balancing gas delivery pipe (71) is used to adjust the pressure in the vacuum tank (1) and the liquid storage tank (2) to be consistent; and the liquid delivery pipe (72) is used to flow the water in the vacuum tank (1) downstream to the interior of the liquid storage tank (2).

4. A water pump vacuum starting device according to claim 3, characterized in that: The balancing gas delivery pipe (71) includes a second balancing gas pipeline (711), on which a first solenoid valve (712) is provided. One end of the second balancing gas pipeline (711) is in communication with the upper portion of the side wall of the vacuum tank (1), and the other end thereof is in communication with the upper portion of the side wall of the liquid storage tank (2). The liquid delivery pipe (72) comprises a delivery pipe (721), a second solenoid valve (722) is provided on the delivery pipe (721), one end of the delivery pipe (721) is communicated with the lower portion of the side wall of the vacuum tank (1), and the other end thereof is communicated with the upper portion of the side wall of the liquid storage tank (2).

5. A water pump vacuum starting device according to claim 4, characterized in that: It also includes a waste liquid conveying line (8), which is used to discharge the liquid collected in the liquid storage tank (2); The waste liquid conveying line (8) comprises: a liquid discharge pipe (81) in communication with the liquid storage tank (2); A liquid discharge solenoid valve (82) provided on the liquid discharge pipe (81); A balancing gas solenoid valve (83) is provided on the balancing gas pipeline 2 (711).

6. A water pump vacuum starting device according to claim 1, characterized in that: A high liquid level electrode (9) located at the top and a low liquid level electrode (10) located at the bottom are provided inside the liquid storage tank (2), and the high liquid level electrode (9) and the low liquid level electrode (10) are electrically connected to the controller (6) respectively; The high liquid level electrode (9) is used to detect the high liquid level inside the liquid storage tank (2), and the low liquid level electrode (10) is used to detect the low liquid level inside the liquid storage tank (2).

7. A water pump vacuum starting device according to claim 1, characterized in that: The vacuum tank (1) is provided with a liquid level electrode (11) and an alarm, a manual drain valve (13) is provided at the bottom of the vacuum tank (1), the liquid level electrode (11) is located in the middle of the vacuum tank (1), and the liquid level electrode (11) and the alarm are electrically connected to the controller (6) respectively; The liquid level electrode (11) is used to detect the liquid level inside the vacuum tank (1).

8. A water pump vacuum starting device according to claim 7, characterized in that: A connecting frame (14) is provided between the vacuum tank (1) and the liquid storage tank (2), the vacuum tank (1) and the liquid storage tank (2) are arranged from top to bottom, the connecting frame (14) is cylindrical, and a through hole for the manual drain valve (13) to extend is provided on the connecting frame (14); A bottom plate (12) is provided at the bottom of the liquid storage tank (2).

Images