High-pressure liquid supply unit and working machine

Abstract

The invention relates to the technical field of industrial equipment, in particular to a high-pressure liquid supply unit and an operation machine.The high-pressure liquid supply unit comprises a base, and a mounting table top is formed on the upper surface of the base; the liquid tank is arranged on the mounting table top and is used for storing fluid; the high-pressure pump assembly is arranged on the mounting table top and located on one side of the liquid tank, and the high-pressure pump assembly comprises a high-pressure pump main body connected to the liquid tank and a motor in transmission fit with the high-pressure pump main body; the liquid outlet assembly comprises a reversing valve set and a plurality of liquid outlet connectors, and the reversing valve set is connected with an outlet of the high-pressure pump body and provided with a plurality of switchable liquid outlet openings. The liquid outlet connector is connected with a liquid outlet opening of the reversing valve group; the controller is electrically connected with the reversing valve set and used for receiving an input instruction and controlling the working states of the liquid outlet openings through the reversing valve set, and single-channel or multi-channel liquid supply is achieved. According to the scheme, the defect that high-pressure water cannot be controllably provided for multiple external devices in the prior art is overcome, and stable liquid supply to multiple devices or multiple water outlet nozzles of the same device at the same time is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of industrial equipment, and in particular to a high-pressure liquid supply unit and an operating machine. Background Art

[0002] In modern industrial production, high-pressure cleaning machines, water jet cutting machines and other equipment have strict requirements for stable high-pressure water flow. However, the existing technology has obvious deficiencies in providing controllable high-pressure water flow for multiple external devices.

[0003] The high-pressure liquid supply mechanisms currently on the market can usually only provide a single high-pressure water flow and cannot achieve flexible liquid supply to multiple devices. When it is necessary to provide high-pressure water flow on demand for multiple devices, it is usually necessary to equip each device with an independent high-pressure liquid supply unit, which not only increases the cost of the equipment, but also makes the management and maintenance of the system complicated. In addition, due to the lack of effective multi-channel control methods, it is difficult for existing technologies to achieve precise control of multiple water outlets, resulting in the inability to flexibly adjust the water supply status of each device.

[0004] Therefore, the fluid supply flexibility based on the traditional high-pressure fluid supply mechanism is low, which limits its application scope in multi-tasking scenarios. Summary of the invention

[0005] The present invention provides a high-pressure liquid supply unit and an operating machine, which are used to solve the defect in the prior art that high-pressure water cannot be controllably provided to multiple external devices, and realize stable liquid supply to multiple devices or multiple water outlet nozzles of the same device at the same time.

[0006] The present invention provides a high-pressure liquid supply unit, comprising: a base, the upper surface of which forms a mounting table; a liquid tank, which is arranged on the mounting table and is used to store fluid; a high-pressure pump assembly, which is arranged on the mounting table and is located on one side of the liquid tank, and the high-pressure pump assembly comprises a high-pressure pump body connected to the liquid tank and a motor that is transmission-coordinated with the high-pressure pump body; a liquid outlet assembly, which comprises a reversing valve group and a plurality of liquid outlet joints, the reversing valve group is connected to the outlet of the high-pressure pump body and has a plurality of switchable liquid outlet openings, and the liquid outlet joints are connected to the liquid outlet openings of the reversing valve group; a controller, which is electrically connected to the reversing valve group and is used to receive input instructions and control the working states of the plurality of liquid outlet openings through the reversing valve group to achieve single-channel or multi-channel liquid supply.

[0007] According to a high-pressure liquid supply unit of the present invention, a water pump and a primary filter are arranged in series on the fluid path between the liquid tank and the high-pressure pump body; when the water pump is running, fluid is extracted from the liquid tank through the primary filter and transported to the high-pressure pump body.

[0008] According to a high-pressure liquid supply unit of the present invention, a secondary filter is further arranged between the water pump and the primary filter, and the filtering level of the secondary filter is higher than that of the primary filter; and / or a tertiary filter is further arranged between the water pump and the high-pressure pump column, and the filtering level of the tertiary filter is higher than that of the primary filter.

[0009] According to a high-pressure liquid supply unit of the present invention, a mounting plate is provided on the top cover of the liquid tank; the water pump, the primary filter, the secondary filter and the tertiary filter are integrated on the mounting plate.

[0010] According to a high-pressure liquid supply unit of the present invention, the high-pressure pump assembly includes a damping coupling, and the damping coupling is drivingly engaged between the high-pressure pump body and the motor.

[0011] According to a high-pressure liquid supply unit of the present invention, the liquid tank has a double-layer structure, the inner layer structure of which forms a liquid storage cavity for storing fluid, and the outer layer structure of the liquid tank is a thermal insulation layer.

[0012] A high-pressure liquid supply unit according to the present invention includes an external shell, which is detachably mounted on the base, enclosing the liquid tank, the high-pressure pump assembly and the reversing valve group in the space surrounded by the external shell and the base; the external shell includes a support plate, and a plurality of liquid outlet connectors are mounted on the support plate, and at least a portion of the liquid outlet connectors extend through the support plate to the outside of the external shell.

[0013] According to a high-pressure liquid supply unit of the present invention, the motor is integrated with a frequency converter; the frequency converter is connected to the controller, and the controller adjusts the rotation speed of the motor through the frequency converter.

[0014] A high-pressure fluid supply unit according to the present invention includes a detection unit connected to the controller, and the detection unit includes any of the following. The present invention also provides one or more sensors: a pressure sensor, arranged at the outlet of the high-pressure pump body or the inlet of the reversing valve group, for detecting the pressure value of the high-pressure fluid; a temperature sensor, arranged at the outlet of the high-pressure pump body or the inlet of the reversing valve group, for detecting the temperature of the high-pressure fluid; a flow sensor, arranged at the outlet of the high-pressure pump body or the inlet of the reversing valve group, for detecting the flow rate of the high-pressure fluid; a liquid level sensor, arranged in the liquid tank, for detecting the liquid level height of the fluid in the liquid tank.

[0015] The present invention also provides a working machine including the high-pressure fluid supply unit of the above embodiment.

[0016] The high-pressure liquid supply unit and operating machinery provided by the present invention solve the problem that it is impossible to controllably provide high-pressure water to multiple external devices in the prior art by integrating key components such as a liquid tank, a high-pressure pump assembly, a reversing valve group, and a controller. Specifically, the present invention includes a base, the upper surface of which forms a mounting table; the liquid tank is arranged on the mounting table for storing fluid; the high-pressure pump assembly is arranged on the mounting table and located on one side of the liquid tank, including a high-pressure pump body connected to the liquid tank and a motor that cooperates with the high-pressure pump body in transmission; the liquid outlet assembly includes a reversing valve group and multiple liquid outlet joints, the reversing valve group is connected to the outlet of the high-pressure pump body, and has multiple switchable liquid outlet openings; the liquid outlet joint is connected to the liquid outlet opening of the reversing valve group; the controller is electrically connected to the reversing valve group, and is used to receive input instructions and control the working state of multiple liquid outlet openings through the reversing valve group to achieve single-channel or multi-channel liquid supply. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0018] Figure 1 This is one of the structural schematic diagrams of the high-pressure liquid supply unit provided by the present invention.

[0019] Figure 2 This is the second structural schematic diagram of the high-pressure liquid supply unit provided by the present invention.

[0020] Reference numerals: 10. Base; 11. Mounting table; 12. External shell; 13. Support plate; 21. Liquid tank; 22. High-pressure pump body; 23. Motor; 24. Reversing valve group; 25. Liquid outlet joint; 26. Shock-absorbing coupling; 31. Water pump; 32. Primary filter; 33. Secondary filter; 34. Tertiary filter; 35. Mounting plate. DETAILED DESCRIPTION

[0021] In order to make the purpose, technical solution and advantages of the present invention clearer, the technical solution of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are 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.

[0022] In the description of the embodiments of the present invention, it should be noted that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, rather than indicating or implying that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limitations on the embodiments of the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance. It should also be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "set", "install", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0023] Combine the following Figure 1 and Figure 2 A specific embodiment of the high-pressure liquid supply unit of the present invention is described.

[0024] The present invention provides a high-pressure liquid supply unit, including a base 10, a liquid tank 21, a high-pressure pump assembly, a liquid outlet assembly, and a controller. The upper surface of the base 10 forms a mounting table 11. The liquid tank 21 is arranged on the mounting table 11 for storing fluid. The high-pressure pump assembly is arranged on the mounting table 11 and is located on one side of the liquid tank 21. The high-pressure pump assembly includes a high-pressure pump body 22 connected to the liquid tank 21 and a motor 23 that is transmission-coordinated with the high-pressure pump body 22. The liquid outlet assembly includes a reversing valve group 24 and a plurality of liquid outlet connectors 25. The reversing valve group 24 is connected to the outlet of the high-pressure pump body 22 and has a plurality of switchable liquid outlet openings. The liquid outlet connector 25 is connected to the liquid outlet opening of the reversing valve group 24. The controller is electrically connected to the reversing valve group 24, and is used to receive input instructions and control the working state of the plurality of liquid outlet openings through the reversing valve group 24, so as to realize single-channel or multi-channel liquid supply. The controller can be arranged on the mounting table 11 or integrated in the base 10.

[0025] Specifically, the upper surface of the base 10 forms a mounting table 11 for fixing and installing other components. The liquid tank 21 is arranged on the mounting table 11 for storing fluid. The liquid tank 21 is preferably designed with a large capacity to ensure the demand for long-term continuous liquid supply. The liquid tank 21 can also be provided with a closable liquid replenishing port for connecting other liquid sources (such as water pipelines) to replenish fluid into the liquid tank 21. The motor 23 drives the high-pressure pump body 22 to compress the fluid in the liquid tank 21 to a high-pressure state. The reversing valve group 24 is connected to the outlet of the high-pressure pump body 22 and has a plurality of switchable liquid outlet openings. By switching the reversing valve group 24, control of the plurality of liquid outlet openings can be achieved. The liquid outlet connector 25 is connected to the liquid outlet opening of the reversing valve group 24 for delivering the high-pressure fluid to the target device. The controller is electrically connected to the reversing valve group 24 for receiving input instructions and controlling the working state of the plurality of liquid outlet openings through the reversing valve group 24 to achieve single-channel or multi-channel liquid supply. Through the intelligent management of the controller, the water supply status of each device can be flexibly adjusted to meet the needs of different application scenarios. The present invention realizes controllable high-pressure water flow supply to multiple external devices by integrating key components such as the liquid tank 21, the high-pressure pump assembly, the reversing valve group 24 and the controller.

[0026] In addition, the reversing valve group 24 preferably adopts a compact design to reduce space occupation and facilitate integration. The reversing valve group 24 may include a plurality of integrated reversing valves, which are designed in a multi-position multi-channel form, and can switch different passages as needed to meet the needs of simultaneous liquid supply to multiple devices. The controller is preferably provided with a main control unit responsible for overall coordination, and a plurality of slave control units respectively control their respective reversing valves. The liquid outlet connector 25 preferably adopts a quick connector design to facilitate quick connection to external devices. A portion of the liquid outlet interface can be used as a backup channel to ensure uninterrupted water supply.

[0027] The high-pressure liquid supply unit may also be provided with a liquid recovery system, including a recovery pipeline and a recovery pump provided at the liquid outlet joint 25. The recovery pipeline is connected between the liquid tank 21 and the high-pressure pump body 22, and is used to return the unused high-pressure fluid to the liquid tank 21. When the high-pressure water flow is not fully used, the remaining liquid can be guided back to the liquid tank 21 through the recovery pipeline. The recovery pipeline is preferably provided with an automatic valve or a one-way valve, which automatically opens when encountering reflux liquid to complete the liquid circulation. The bottom of the liquid tank 21 is preferably provided with a sloped structure to facilitate the unused liquid to flow back to the bottom of the tank for concentration.

[0028] According to a high-pressure liquid supply unit of the present invention, a water pump 31 and a primary filter 32 are arranged in series on the fluid path between the liquid tank 21 and the high-pressure pump body 22; when the water pump 31 is running, the fluid is extracted from the liquid tank 21 through the primary filter 32 and delivered to the high-pressure pump body 22. Specifically, the arrangement of the water pump 31 and the primary filter 32 ensures that the fluid is purified before entering the high-pressure pump. The water pump 31 is used to extract fluid from the liquid tank 21 and deliver it to the high-pressure pump body 22. The primary filter 32 performs preliminary filtering on the fluid before it enters the high-pressure pump to remove larger particles and other impurities to protect the high-pressure pump from contamination and damage. The filtering effect not only improves the quality of the fluid, but also extends the service life of the high-pressure pump and improves the reliability and efficiency of the system.

[0029] According to a high-pressure liquid supply unit of the present invention, a secondary filter 33 is further provided between the water pump 31 and the primary filter 32, and the filtering level of the secondary filter 33 is higher than that of the primary filter 32; and / or, a tertiary filter 34 is further provided between the water pump 31 and the high-pressure pump column, and the filtering level of the tertiary filter 34 is higher than that of the primary filter 32. By providing the secondary filter 33 and / or the tertiary filter 34, the purity of the fluid is further improved. The filtering level of the secondary filter 33 is higher than that of the primary filter 32, and it can remove finer particles, ensuring that the fluid reaches a higher purity before entering the high-pressure pump. The tertiary filter 34 also has a higher filtering level, further purifies the fluid, and ensures that the high-pressure pump will not be affected by impurities during operation. This multi-level filtering system not only improves the quality of the fluid, but also significantly enhances the reliability and stability of the system, thereby ensuring the efficient operation of the high-pressure liquid supply unit in practical applications.

[0030] According to a high-pressure liquid supply unit of the present invention, a mounting plate 35 is provided on the top cover of the liquid tank 21; the water pump 31, the primary filter 32, the secondary filter 33 and the tertiary filter 34 are integrated on the mounting plate 35. Specifically, a mounting plate 35 is provided on the top cover of the liquid tank 21 for integrated mounting of the water pump 31, the primary filter 32, the secondary filter 33 and the tertiary filter 34. This integrated design not only saves space, but also simplifies the installation and maintenance of the system. The water pump 31, the primary filter 32, the secondary filter 33 and the tertiary filter 34 are integrated on the mounting plate 35, making the layout of the entire system more compact and reducing the complexity of the pipeline connection.

[0031] Furthermore, a reverse flushing device can be installed on the filter to automatically start the backwashing procedure when the blockage degree reaches a preset value. Specifically, the reverse flushing device can be designed as an independent flushing pump and a corresponding flushing pipeline. When it is detected that the blockage degree of the filter reaches a preset value, the control system will automatically start the flushing pump, and reversely inject fluid into the filter through the flushing pipeline to remove impurities attached to the filter. It is understandable that corresponding drain ports can also be set on the primary filter 32, the secondary filter 33 and the tertiary filter 34, which are opened during the reverse flushing process to discharge sewage.

[0032] According to a high-pressure liquid supply unit of the present invention, the high-pressure pump assembly includes a shock-absorbing coupling 26, and the shock-absorbing coupling 26 is transmission-matched between the high-pressure pump body 22 and the motor 23. Specifically, the shock-absorbing coupling 26 is a device for connecting the high-pressure pump body 22 and the motor 23, and its main function is to reduce vibration and impact while transmitting power. During the operation of the high-pressure pump, the rotational power generated by the motor 23 is transmitted to the high-pressure pump body 22 through the shock-absorbing coupling 26. The design of the shock-absorbing coupling 26 can absorb and weaken the vibration caused by the mechanical connection between the motor 23 and the high-pressure pump, thereby reducing the vibration level of the entire system. It can be understood that the two sides of the shock-absorbing coupling 26 are detachably connected to the high-pressure pump body 22 and the motor 23, respectively, for easy maintenance.

[0033] Furthermore, the high-pressure pump assembly can adopt a two-stage or multi-stage design to increase the working efficiency of the pump. Specifically, the two-stage or multi-stage design works in series through multiple pump stages, and each pump gradually pressurizes the fluid to achieve a higher final output pressure, which can significantly improve the working efficiency and output pressure of the pump, while reducing the load of a single pump stage and extending the service life of the pump. In a two-stage or multi-stage design, each pump stage usually includes an impeller and a guide vane, and the fluid is gradually pressurized through each stage of the pump in turn. Each stage of the pump raises the pressure of the fluid to a certain level, and then passes it to the next stage of the pump to continue pressurization. This step-by-step pressurization method not only improves the final output pressure, but also makes the entire pump system more stable and reliable. In addition, the performance of the system can be optimized by adjusting the working state of different pump stages. For example, in some cases, the output pressure can be adjusted by controlling the operation of some pump stages to adapt to different working requirements. This flexibility enables the high-pressure liquid supply unit to better cope with various application scenarios and provide a more stable high-pressure water flow. Among them, all pump stages can be driven by the same motor 23. The motor 23 is connected to the impeller of the first pump stage through a main shaft, and then transmits power to the subsequent pump stages through a series of couplings or gearboxes. Alternatively, each pump stage can also be driven by an independent motor 23, and the speed and working state of each pump stage can be controlled separately.

[0034] According to a high-pressure liquid supply unit of the present invention, the liquid tank 21 has a double-layer structure, the inner layer structure of which forms a liquid storage cavity for storing fluid, and the outer layer structure of the liquid tank 21 is a thermal insulation layer. Specifically, the double-layer structure of the liquid tank 21 is intended to provide better thermal insulation and heat insulation performance. The inner layer structure forms a closed liquid storage cavity for storing fluid. The outer layer structure is a thermal insulation layer, which is usually made of a material with good thermal insulation performance, such as polyurethane foam, rock wool or other high-efficiency thermal insulation materials. The design of the double-layer structure can effectively reduce the impact of the external ambient temperature on the temperature of the fluid in the liquid tank 21, and keep the fluid within a suitable operating temperature range. For example, in a cold environment, the thermal insulation layer can prevent the fluid in the liquid tank 21 from freezing, ensuring the normal operation of the system under low temperature conditions.

[0035] A high-pressure liquid supply unit according to the present invention includes an external shell 12, which is detachably mounted on a base 10, and a liquid tank 21, a high-pressure pump assembly, and a reversing valve group 24 are enclosed in a space enclosed by the external shell 12 and the base 10; the external shell 12 includes a support plate 13, a plurality of liquid outlet joints 25 are mounted on the support plate 13, and at least a portion of the liquid outlet joints 25 passes through the support plate 13 and extends to the outside of the external shell 12. Specifically, the external shell 12 provides effective protection and integration of internal components. The external shell 12 is detachably mounted on the base 10 to form a closed space, and key components such as the liquid tank 21, the high-pressure pump assembly, and the reversing valve group 24 are wrapped therein, which can not only protect the internal components from the influence of the external environment (such as dust, moisture, and mechanical damage), but also make the entire high-pressure liquid supply unit more compact and beautiful. The liquid outlet joint 25 is arranged on the support plate 13, and at least a portion thereof passes through the support plate 13 and extends to the outside of the external shell 12, so as to connect external equipment.

[0036] According to a high-pressure liquid supply unit of the present invention, the motor 23 is integrated with a frequency converter; the frequency converter is connected to the controller, and the controller adjusts the speed of the motor 23 through the frequency converter. Specifically, the motor 23 is integrated with a frequency converter, which can adjust the speed of the motor 23. The frequency converter controls the speed of the motor 23 by changing the power frequency supplied to the motor 23, thereby achieving precise control of the output power and fluid pressure of the motor 23. The frequency converter is electrically connected to the controller, and the controller sends instructions to the frequency converter according to actual needs or preset programs, and the frequency converter adjusts the speed of the motor 23 according to these instructions. Through the frequency converter, the controller can adjust the speed of the motor 23 in real time and accurately, thereby achieving fine control of the output flow and pressure of the high-pressure pump. The frequency converter enables the system to respond quickly to different work requirements, whether low flow or high flow, it can be flexibly adjusted.

[0037] A high-pressure liquid supply unit according to the present invention includes a detection unit connected to a controller, and the detection unit includes any of the following sensors: a pressure sensor, arranged at the outlet of the high-pressure pump body 22 or the inlet of the reversing valve group 24, for detecting the pressure value of the high-pressure fluid; a temperature sensor, arranged at the outlet of the high-pressure pump body 22 or the inlet of the reversing valve group 24, for detecting the temperature of the high-pressure fluid; a flow sensor, arranged at the outlet of the high-pressure pump body 22 or the inlet of the reversing valve group 24, for detecting the flow of the high-pressure fluid; a liquid level sensor, arranged in the liquid tank 21, for detecting the liquid level height of the fluid in the liquid tank 21. The sensor is connected to the controller to form an intelligent control system to realize accurate monitoring and control of the high-pressure liquid supply unit.

[0038] Among them, the pressure sensor monitors the fluid pressure value at the outlet of the high-pressure pump body 22 or the inlet of the reversing valve group 24 in real time, and feeds back the data to the controller. When a pressure abnormality is detected (such as too high or too low), the controller adjusts the speed of the motor 23 through the frequency converter to maintain a constant pressure output. If the pressure abnormality persists, the system can issue an alarm prompt. The temperature sensor monitors the fluid temperature at the outlet of the high-pressure pump body 22 or the inlet of the reversing valve group 24 in real time, and feeds back the data to the controller. Temperature monitoring helps to detect possible overheating or overcooling in time and prevent equipment damage caused by abnormal temperature. The controller can make corresponding control adjustments based on the temperature data to protect the equipment. The flow sensor monitors the fluid flow at the outlet of the high-pressure pump body 22 or the inlet of the reversing valve group 24 in real time, and feeds back the data to the controller. The controller automatically adjusts the opening degree of the reversing valve by monitoring the flow of each path to maintain the balance of the flow of each path. The liquid level sensor is arranged in the liquid tank 21 to detect the fluid level height in the liquid tank 21. When the liquid level is lower than the preset value, the liquid level sensor will send a signal to the controller, and the controller can trigger the refilling mechanism (such as opening the refilling port or starting the refilling pump) to replenish the fluid to ensure that there is always enough fluid in the liquid tank 21 to avoid system shutdown due to lack of liquid. Through real-time monitoring and feedback from these sensors, the controller can accurately control the entire high-pressure liquid supply unit to ensure efficient, stable and safe operation of the system.

[0039] The working machine provided by the present invention is described below. The working machine described below and the high-pressure fluid supply unit described above can be referred to each other.

[0040] The present invention also provides an operating machine, comprising the high-pressure liquid supply unit of the above embodiment. The operating machine may be a high-pressure cleaning machine, a water jet cutting machine or other equipment.

[0041] According to a preferred embodiment of the present invention, through the cooperation of the reversing valve group 24 and the controller, controllable liquid supply to multiple devices or multiple nozzles can be achieved, thereby improving work efficiency and reducing equipment costs. The integrated design reduces external pipeline connections and simplifies the installation and maintenance of the equipment. The sensor monitors the operating parameters of the pump (such as pressure, temperature, and flow) and feeds back to the control system in real time. When an abnormal situation is detected, the system can automatically start the backup pump or issue an alarm prompt, thereby improving the reliability and safety of the system. The application of the high-pressure liquid supply unit enables the operating machinery to have multiple advantages such as multi-channel controllable liquid supply, precise pressure control, temperature monitoring and protection, flow balance, liquid level monitoring and automatic liquid replenishment, integrated design, energy saving and high efficiency, and fault diagnosis and early warning, which significantly improves the working efficiency, stability and reliability of the operating machinery.

[0042] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "mode", "specific mode", or "some modes" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or mode are included in at least one embodiment or mode of the embodiment of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or mode. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or modes in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or modes described in this specification and the features of the different embodiments or modes, without contradiction.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A high pressure liquid supply unit, characterized in that: include: A base (10), wherein an upper surface of the base (10) forms a mounting table (11); A liquid tank (21), arranged on the mounting table (11) and used for storing fluid; A high-pressure pump assembly, arranged on the mounting table (11) and located on one side of the liquid tank (21), the high-pressure pump assembly comprising a high-pressure pump body (22) connected to the liquid tank (21) and a motor (23) in transmission cooperation with the high-pressure pump body (22); a liquid outlet assembly, comprising a reversing valve group (24) and a plurality of liquid outlet connectors (25); the reversing valve group (24) is connected to the outlet of the high-pressure pump body (22) and has a plurality of switchable liquid outlet openings; and the liquid outlet connectors (25) are connected to the liquid outlet openings of the reversing valve group (24); The controller is electrically connected to the reversing valve group (24) and is used to receive input instructions and control the working states of the plurality of liquid outlet openings through the reversing valve group (24) to achieve single-channel or multi-channel liquid supply.

2. The high pressure liquid supply unit according to claim 1, characterized in that: A water pump (31) and a primary filter (32) are arranged in series on the fluid path between the liquid tank (21) and the high-pressure pump body (22); When the water pump (31) is in operation, fluid is extracted from the liquid tank (21) through the primary filter (32) and transported to the high-pressure pump body (22).

3. The high pressure liquid supply unit according to claim 2, characterized in that: A secondary filter (33) is further provided between the water pump (31) and the primary filter (32), and the filtering grade of the secondary filter (33) is higher than that of the primary filter (32); And / or, a third-level filter (34) is further provided between the water pump (31) and the high-pressure pump column, and the filtering level of the third-level filter (34) is higher than that of the first-level filter (32).

4. The high pressure liquid supply unit according to claim 3, characterized in that: A mounting plate (35) is provided on the top cover of the liquid tank (21); The water pump (31), the primary filter (32), the secondary filter (33) and the tertiary filter (34) are integrated on the mounting plate (35).

5. The high pressure liquid supply unit according to claim 1, characterized in that: The high-pressure pump assembly comprises a damping coupling (26), and the damping coupling (26) is drivingly engaged between the high-pressure pump body (22) and the motor (23).

6. The high pressure liquid supply unit according to claim 1, characterized in that: The liquid box (21) has a double-layer structure, the inner layer structure of which forms a liquid storage cavity for storing fluid, and the outer layer structure of the liquid box (21) is a thermal insulation layer.

7. The high pressure liquid supply unit according to any one of claims 1 to 6, characterized in that: The invention comprises an external shell (12), wherein the external shell (12) is detachably mounted on the base (10), and the liquid tank (21), the high-pressure pump assembly and the reversing valve group (24) are enclosed in a space enclosed by the external shell (12) and the base (10); The outer shell (12) comprises a support plate (13), a plurality of liquid outlet joints (25) are mounted on the support plate (13), and at least a portion of the liquid outlet joints (25) passes through the support plate (13) and extends to the outside of the outer shell (12).

8. The high pressure liquid supply unit according to any one of claims 1 to 6, characterized in that: The motor (23) is integrated with a frequency converter; The frequency converter is connected to the controller, and the controller adjusts the rotation speed of the motor (23) through the frequency converter.

9. The high pressure liquid supply unit according to claim 8, characterized in that: A detection unit connected to the controller is included, wherein the detection unit includes any one or more of the following sensors: A pressure sensor, arranged at the outlet of the high-pressure pump body (22) or the inlet of the reversing valve group (24), and used for detecting the pressure value of the high-pressure fluid; a temperature sensor, arranged at the outlet of the high-pressure pump body (22) or the inlet of the reversing valve group (24), and used for detecting the temperature of the high-pressure fluid; A flow sensor, arranged at the outlet of the high-pressure pump body (22) or the inlet of the reversing valve group (24), and used for detecting the flow rate of the high-pressure fluid; A liquid level sensor is arranged in the liquid tank (21) and is used to detect the liquid level height of the fluid in the liquid tank (21).

10. A working machine, characterized in that: A high-pressure liquid supply unit comprising any one of claims 1 to 9.

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