Hydraulic system of movable concrete mixer

Abstract

The utility model relates to a hydraulic system of a movable concrete mixer, which comprises an engine, a driving end of the engine is respectively connected with a plunger pump and a gear pump, the plunger pump and the gear pump are connected with a hydraulic oil tank through an oil suction filter, the plunger pump is connected with a mixing motor through a mixing electromagnetic valve block, and the mixing motor is connected with a hydraulic oil tank. The stirring electromagnetic valve block is connected with the hydraulic oil tank through an oil return device, the gear pump is connected with a high-cleaning water pump motor and an additive motor through the cleaning electromagnetic valve block, and the gear pump is connected with the discharging door oil cylinder through the single-linkage multi-way valve block. According to the utility model, the engine is adopted for full-hydraulic driving, other additional power supplies are not needed, work is finished at any time, the device is suitable for being used in an environment without power supply or with an unstable power supply, convenience and rapidness are realized, and the working efficiency is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of hydraulic systems, and in particular relates to a hydraulic system for a mobile concrete mixer. Background Art

[0002] Concrete construction is an indispensable part of the engineering construction process. The hydraulic system not only provides the necessary power and control for concrete construction, but also improves the construction efficiency and quality through its dynamic characteristics and structural design. The optimization and maintenance of the hydraulic system is crucial to ensure the smooth progress of concrete construction. In areas where electricity cannot be delivered, such as in the wild suburbs, the concrete construction process cannot be carried out without power connection. The existing power storage box is not only costly but also has limited power and cannot meet the needs of production. Utility Model Content

[0003] (I) Purpose of the utility model

[0004] In order to overcome the above shortcomings, the purpose of the utility model is to provide a mobile concrete mixer hydraulic system to solve the above technical problems.

[0005] (II) Technical solution

[0006] To achieve the above objectives, the technical solutions provided by this application are as follows:

[0007] A mobile concrete mixer hydraulic system comprises an engine, wherein the driving end of the engine is respectively connected to a plunger pump and a gear pump, the plunger pump and the gear pump are connected to a hydraulic oil tank through an oil suction filter, the plunger pump is connected to a stirring motor through a stirring solenoid valve block, the stirring solenoid valve block is connected to the hydraulic oil tank through an oil return device, the gear pump is connected to a high-cleaning water pump motor and an admixture motor through a cleaning solenoid valve block, and the gear pump is connected to a discharge door cylinder through a single-connected multi-way valve block.

[0008] Preferably, the oil suction filter comprises an oil suction housing, an oil suction filter element is arranged in the oil suction housing, and an oil inlet and an oil outlet are respectively arranged at the upper and lower ends of the oil suction housing.

[0009] Preferably, the stirring solenoid valve block includes a stirring motor solenoid valve.

[0010] Preferably, the oil return device comprises an oil return pipeline, and the end of the oil return pipeline is connected to the hydraulic oil tank through an oil return filter.

[0011] Preferably, an air-cooled radiator is provided on the oil return pipeline.

[0012] Preferably, the hydraulic oil tank is provided with a liquid level gauge and an air filter.

[0013] Preferably, the cleaning solenoid valve block includes a water pump solenoid valve and an additive solenoid valve.

[0014] Preferably, the single-unit multi-way valve block includes a discharge door solenoid valve.

[0015] Beneficial effects:

[0016] The utility model adopts the engine for full hydraulic drive, does not need to be connected to other power sources, can be completed as soon as it is ready, is suitable for use in an environment without power supply or unstable power supply, is convenient and fast, and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the utility model;

[0018] Figure 2 It is a structural diagram of an oil suction filter according to an embodiment of the utility model. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical solution and advantages of the present invention more clear, the following is a detailed description of the present invention in conjunction with the specific implementation methods and with reference to the attached drawings. Figure 1-2 , the utility model is further described in detail. It should be understood that these descriptions are only exemplary and are not intended to limit the scope of the utility model. In addition, in the following description, the description of well-known structures and technologies is omitted to avoid unnecessary confusion of the concept of the utility model.

[0020] The utility model provides a mobile concrete mixer hydraulic system, including an engine 6, the driving end of the engine 6 is connected to a plunger pump 7 and a gear pump 15 respectively, the plunger pump 7 and the gear pump 15 are connected to a hydraulic oil tank 1 through an oil suction filter 16, the oil suction filter 16 includes an oil suction housing 21, an oil suction filter element 23 is arranged in the oil suction housing 21, and an oil inlet 20 and an oil outlet 22 are arranged at the upper and lower ends of the oil suction housing 21. The oil suction filter can be set to purify the oil, filter the impurities in the hydraulic oil, and prevent the wear of various components of the hydraulic system.

[0021] The plunger pump 7 is connected to the stirring motor 9 via a stirring solenoid valve block 8 , and the stirring solenoid valve block 8 includes a stirring motor solenoid valve 17 .

[0022] The stirring solenoid valve block 8 is connected to the hydraulic oil tank 1 through an oil return device, and the oil return device includes an oil return pipeline, and the end of the oil return pipeline is connected to the hydraulic oil tank 1 through an oil return filter 4. An air-cooled radiator 5 is provided on the oil return pipeline. The setting of the air-cooled radiator 5 can dissipate the heat of the hydraulic oil in the oil return pipeline.

[0023] The hydraulic oil tank 1 is provided with a liquid level gauge 2 and an air filter 3. The liquid level gauge 2 is used to observe the oil level in the hydraulic oil tank 1, and the air filter 3 on the hydraulic oil tank 1 can prevent dust and other pollutants from entering the hydraulic oil tank 1 through the vent holes of the hydraulic oil tank 1, thereby protecting the cleanliness of the hydraulic oil.

[0024] The gear pump 15 is connected to the high-wash water pump motor 13 and the additive motor 12 through the cleaning solenoid valve block 11 . The cleaning solenoid valve block 11 includes a water pump solenoid valve and an additive solenoid valve 18 .

[0025] The gear pump 15 is connected to the discharge door oil cylinder 14 through the single multi-way valve block 10. The single multi-way valve block 10 includes a discharge door solenoid valve 19.

[0026] The mixer is driven by a plunger pump to drive the mixing motor. The discharge door switch and the water and additives that need to be accurately measured are driven by a gear pump. The discharge door switch is controlled by a single multi-way valve block. The water and high-pressure cleaning water pumps are connected to the solenoid valve block through the bridge function of the electric multi-way valve for control. The flow sensor on the pipeline is used for metering, and the PLC controls the start and stop.

[0027] After the preheating of the engine 6 is completed, first confirm that the mixer discharge door is in the closed state. If the discharge door is not closed, the discharge door solenoid valve is controlled to be energized to close it. Then the mixing motor solenoid valve is energized, the mixing motor starts to work, and the crane lifts the ton bag to unload. At the same time, the water pump solenoid valve is energized, and the high-cleaning water pump motor 13 starts to supply water to the mixer. At the same time, the additive pump driven by the 24V motor starts to work. When the crane unloads, and the water and additive measured by the sensor reach the required amount, the additive solenoid valve and the additive pump stop working. After the specified mixing time is reached, the discharge solenoid valve is controlled to be energized, and the rodless chamber of the discharge door cylinder is filled with oil. The discharge door opens to start unloading. After the unloading is completed, the discharge door solenoid valve is energized and the discharge door is closed. Then the loading and watering operation is performed, and the above steps are repeated. After the construction is completed, the mixer and the discharge door need to be cleaned. At this time, the water pump solenoid valve is controlled to be energized, and the high-speed cleaning water pump motor rotates to perform cleaning work. After the cleaning is completed, the water pump solenoid valve and the mixing motor solenoid valve are closed, and finally the engine 6 is turned off, and the work is completed.

[0028] The utility model adopts the engine for full hydraulic drive, does not need to be connected to other power sources, can be completed as soon as it is ready, is suitable for use in an environment without power supply or unstable power supply, is convenient and fast, and improves work efficiency.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0030] 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 the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. 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 mobile concrete mixer hydraulic system, characterized in that: It includes an engine, the driving end of the engine is connected to a plunger pump and a gear pump respectively, the plunger pump and the gear pump are connected to a hydraulic oil tank through an oil suction filter, the plunger pump is connected to a stirring motor through a stirring solenoid valve block, the stirring solenoid valve block is connected to a hydraulic oil tank through an oil return device, the gear pump is connected to a high-cleaning water pump motor and an additive motor through a cleaning solenoid valve block, and the gear pump is connected to a discharge door cylinder through a single-unit multi-way valve block.

2. A mobile concrete mixer hydraulic system according to claim 1, characterized in that: The oil suction filter comprises an oil suction housing, an oil suction filter element is arranged in the oil suction housing, and an oil inlet and an oil outlet are respectively arranged at the upper and lower ends of the oil suction housing.

3. A mobile concrete mixer hydraulic system according to claim 1, characterized in that: The stirring solenoid valve block includes a stirring motor solenoid valve.

4. A mobile concrete mixer hydraulic system according to claim 1, characterized in that: The oil return device comprises an oil return pipeline, and the end of the oil return pipeline is connected to the hydraulic oil tank through an oil return filter.

5. A mobile concrete mixer hydraulic system according to claim 4, characterized in that: An air-cooled radiator is arranged on the oil return pipeline.

6. A mobile concrete mixer hydraulic system according to claim 1, characterized in that: The hydraulic oil tank is provided with a liquid level gauge and an air filter.

7. The hydraulic system of a mobile concrete mixer according to claim 1, characterized in that: The cleaning solenoid valve block comprises a water pump solenoid valve and an additive solenoid valve.

8. The hydraulic system of a mobile concrete mixer according to claim 1, characterized in that: The single-unit multi-way valve block includes a discharge door solenoid valve.

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