Machine-made sand wet mixing machine

Abstract

The utility model provides a machine-made sand wet mixing machine, and belongs to the technical field of preparation of building materials. The machine-made sand wet mixing machine comprises a control piece, a first detection piece, a driving piece and a roller connected with the driving piece. Machine-made sand is placed in the roller, the driving part is used for rotating and driving the roller to rotate, and the roller is used for spraying water to the machine-made sand and stirring the machine-made sand during rotation. The first detection piece and the driving piece are both electrically connected with the control piece, the first detection piece is used for detecting operation information, the operation information comprises at least one of the weight of machine-made sand in the roller and parameters of the driving piece, and the parameters comprise current of the driving piece or hydraulic pressure of the driving piece; the control part is used for controlling the rotating speed of the driving part according to operation information. By means of the arrangement, it can be guaranteed that machine-made sand can be fully stirred through rotation of the roller, meanwhile, the manual intervention requirement is reduced, and operation is simpler; and the waste of electric energy caused by continuous operation of the driving piece at the original rotating speed when the roller is idle can be reduced, and the energy-saving effect is good.

Description

Technical Field

[0001] This application relates to the field of building material preparation technology, and in particular to a machine-made sand mixing machine. Background Technology

[0002] A manufactured sand mixing machine is a device that humidifies and mixes manufactured sand (i.e., sand made by mechanically crushing natural rocks, ores, or construction waste, etc.) to achieve the required humidity and uniformity.

[0003] In related technologies, a manufactured sand mixing machine includes a mixing drum and a motor. The motor is connected to the mixing drum. When in use, the motor is started to drive the mixing drum to rotate. During the rotation of the mixing drum, the manufactured sand is moistened by spraying through internal nozzles and the manufactured sand is mixed.

[0004] However, in some application scenarios, when using the above-mentioned manufactured sand mixing machine to mix manufactured sand, the operation is relatively inconvenient and the motor consumes a lot of energy. Utility Model Content

[0005] This application provides a manufactured sand mixing machine to address the shortcomings of related technologies.

[0006] This application provides a manufactured sand mixing machine, comprising:

[0007] The machine body includes a drive unit and a drum connected to the drive unit. The drum is used to hold manufactured sand. The drive unit is used to rotate and drive the drum to rotate. The drum is used to spray water onto the manufactured sand and stir the manufactured sand when it rotates.

[0008] The control component includes a control element and a first detection element. Both the first detection element and the drive element are electrically connected to the control element. The first detection element is used to detect operating information, which includes at least one of the weight of the manufactured sand in the drum and the parameters of the drive element, including the current of the drive element or the hydraulic pressure of the drive element. The control element is used to control the rotational speed of the drive element according to the operating information.

[0009] In one possible implementation, the manufactured sand mixing machine provided in this application includes a first detection component comprising at least one of a first detection part and a second detection part, which are electrically connected to a control component; wherein the first detection part is used to detect the weight of the manufactured sand inside the drum; and the second detection part is used to detect the current of the drive component or the hydraulic pressure of the drive component.

[0010] In one possible implementation, the manufactured sand mixing machine provided in this application has a second detection unit for detecting the current of a drive component. The drive component includes a variable frequency motor and a frequency converter electrically connected to the variable frequency motor. The frequency converter is electrically connected to a control unit, and the drive shaft of the variable frequency motor is connected to a drum. The control unit is used to control the output frequency of the frequency converter according to the detection information of at least one of the first and second detection units to adjust the speed of the variable frequency motor.

[0011] In one possible implementation, the manufactured sand mixing machine provided in this application has a programmable logic controller as the control component; and / or, a first detection unit is a pressure sensor; and / or, a second detection unit is a current transformer.

[0012] In one possible implementation, the manufactured sand mixing machine provided in this application includes a second detection unit for detecting the hydraulic pressure of a drive component. The drive component includes a hydraulic pump station, a hydraulic motor, and a control valve. The hydraulic pump station is connected to the hydraulic motor via the control valve, and the hydraulic pump station is used to supply hydraulic oil to the hydraulic motor through the control valve to make the hydraulic motor rotate. The control valve is electrically connected to a control unit, and the drive shaft of the hydraulic motor is connected to a drum. The control unit is used to control the opening degree of the control valve according to the detection information of at least one of the first and second detection units to adjust the speed of the hydraulic motor.

[0013] In one possible implementation, the manufactured sand mixing machine provided in this application further includes a second detection element in the control assembly. The drum includes a cylinder section and multiple water spray sections connected to the cylinder section. The cylinder section is connected to a drive component and has a receiving cavity for placing manufactured sand. The water spray sections are placed inside the receiving cavity. The second detection element and the water spray sections are both electrically connected to the control component. The second detection element is used to detect whether the cylinder section is rotating. The control component is also used to control each water spray section to start when the second detection element detects that the cylinder section is rotating, so as to spray water onto the manufactured sand.

[0014] In one possible implementation, the manufactured sand mixing machine provided in this application further includes a transmission assembly, and the drive component is connected to the drum drive via the transmission assembly.

[0015] In one possible implementation, the manufactured sand mixing machine provided in this application includes a transmission assembly comprising a coupling, two idler shafts, and two idler sets; the idler shafts and idler sets are one-to-one corresponding, and each idler set includes at least two idlers, which are spaced apart and sleeved on the corresponding idler shafts. The two idler shafts are respectively disposed on opposite sides of the drum, and the two idler shafts are connected to the drive shaft of the drive component through the coupling to make the idlers contact the drum; the drive shaft of the drive component is used to rotate and drive the idler shafts and idlers to rotate, and the idlers are used to rub against the drum during rotation to drive the drum to rotate in the opposite direction.

[0016] In one possible implementation, the manufactured sand mixing machine provided in this application further includes a speed reducer in the transmission assembly. The speed reducer includes a first speed reducer, and the drive shaft of the driving member is connected to a coupling through the first speed reducer; or, the speed reducer includes a second speed reducer and a V-belt connected to the second speed reducer, the drive shaft of the driving member is connected to the second speed reducer, and the V-belt is connected to the coupling.

[0017] In one possible implementation, the manufactured sand mixing machine provided in this application further includes a connecting assembly, which includes a support member and a protective member; the support member is used to be placed on the target surface, and the side of the support member facing away from the target surface has a supporting surface, and the roller is placed on the supporting surface; the protective member covers the outer periphery of the roller.

[0018] The manufactured sand mixing machine provided in this application comprises a machine body and a control component. The machine body includes a drive unit and a drum connected to the drive unit. The drum is used to hold manufactured sand. The drive unit is used to rotate and drive the drum to rotate. The drum is used to spray water onto the manufactured sand and agitate the manufactured sand when rotating. The control component includes a control unit and a first detection unit. Both the first detection unit and the drive unit are electrically connected to the control unit. The first detection unit is used to detect operating information, which includes at least one of the following: the weight of the manufactured sand in the drum and the parameters of the drive unit, including the current of the drive unit or the hydraulic pressure of the drive unit. The control unit is used to control the rotational speed of the drive unit according to the operating information.

[0019] For example, the drive unit drives the drum to rotate via electric power. When the first detection unit detects an increase in the weight of the manufactured sand inside the drum; or when the weight of the manufactured sand increases, the drive unit needs to output a larger electromagnetic torque, causing the first detection unit to detect an increase in the current of the drive unit; or when both the weight of the manufactured sand detected by the first detection unit and the current of the drive unit increase, the speed of the drive unit is increased by the control unit. This ensures that the rotation of the drum can fully mix the manufactured sand while reducing the need for manual intervention and simplifying operation. When the weight of the manufactured sand detected by the first detection unit is zero, that is, when the drum is unloaded, the speed of the drive unit is reduced by the control unit, or the drive unit is turned off, reducing the speed to zero. This reduces the energy waste caused by the drive unit continuing to operate at the original speed when the drum is unloaded, resulting in good energy-saving effect. Attached Figure Description

[0020] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0021] Figure 1 A schematic diagram of the structure of the machine body in the manufactured sand mixing plant provided in the embodiments of this application. Figure 1 ;

[0022] Figure 2Electrical connections of the control components and drive components in the manufactured sand mixing machine provided in the embodiments of this application. Figure 1 ;

[0023] Figure 3 for Figure 1 A structural diagram from another angle;

[0024] Figure 4 for Figure 3 Sectional view of part AA in the diagram;

[0025] Figure 5 A schematic diagram of the structure of the machine body in the manufactured sand mixing plant provided in the embodiments of this application. Figure 2 ;

[0026] Figure 6 Electrical connections of the control components and drive components in the manufactured sand mixing machine provided in the embodiments of this application. Figure 2 .

[0027] Explanation of reference numerals in the attached figures:

[0028] 100-body;

[0029] 110-Drive component; 111-Variable frequency motor; 112-Variable frequency drive; 113-Hydraulic pump station; 114-Hydraulic motor; 115-Control valve; 120-Drum; 121-Cylinder section; 1211-Receiving cavity; 122-Water spray section; 130-Transmission assembly; 131-Coupling; 132-Idler roller shaft; 133-Idler roller; 134-First reducer; 140-Connecting assembly; 141-Support component; 1411-Support rod; 142-Protective component;

[0030] 200 - Control components;

[0031] 210 - Control component; 220 - First inspection component; 221 - First inspection unit; 222 - Second inspection unit; 230 - Second inspection component. Detailed Implementation

[0032] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions in the embodiments of this application will be described in more detail below with reference to the accompanying drawings. In the drawings, the same or similar reference numerals denote the same or similar components or components having the same or similar functions throughout. The described embodiments are some, but not all, embodiments of this application. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain this application, and should not be construed as limiting this application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application. The embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, an indirect connection through an intermediate medium, or the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0034] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used 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, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0035] The terms "first," "second," "third," "fourth," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented, for example, in a sequence other than those illustrated or described herein.

[0036] Furthermore, the terms “comprising” and “having”, and any variations thereof, are intended to cover non-exclusive inclusion, such that a process, method, system, product, or apparatus that includes a series of steps or units is not necessarily limited to those steps or units that are explicitly listed, but may include other steps or units that are not explicitly listed or that are inherent to such process, method, product, or apparatus.

[0037] A manufactured sand mixing machine is a device that humidifies and mixes manufactured sand (i.e., sand made by mechanically crushing natural rocks, ores, or construction waste, etc.) to achieve the required humidity and uniformity.

[0038] In related technologies, a manufactured sand mixing machine includes a mixing drum and a motor. The motor is connected to the mixing drum. When in use, the motor is started to drive the mixing drum to rotate. During the rotation of the mixing drum, the manufactured sand is moistened by spraying through internal nozzles and the manufactured sand is mixed.

[0039] However, in some applications, such as variable frequency speed-regulating asynchronous motors, the motor can be a variable frequency speed-regulating asynchronous motor. A variable frequency speed-regulating asynchronous motor is a type of motor that achieves wide-range stepless speed regulation by changing the power supply frequency through a frequency converter. Specifically, the frequency converter takes the input mains frequency power supply, such as 50Hz or 60Hz, and generates a variable frequency three-phase AC power supply to the variable frequency speed-regulating asynchronous motor through pulse width modulation (PWM). In other words, the frequency converter can provide different output frequencies, allowing the variable frequency speed-regulating asynchronous motor to receive AC power of the corresponding frequency to start and run. Furthermore, when the output frequency is reduced, the speed of the variable frequency speed-regulating asynchronous motor decreases proportionally, and when the output frequency is increased, the speed of the variable frequency speed-regulating asynchronous motor increases proportionally.

[0040] Furthermore, when operators intermittently feed manufactured sand into the mixing drum by keeping the variable frequency speed-regulating asynchronous motor constantly running, several issues arise. First, when the feed rate (the operator feeding the manufactured sand) and the discharge rate (the discharge of the mixed manufactured sand from the drum via manual operation or a discharge device) are inconsistent, the weight of the manufactured sand inside the drum changes. Therefore, to ensure thorough mixing, operators need to manually adjust the inverter's output frequency to adapt the motor's speed to the drum's load variations, leading to inconvenience and reduced mixing efficiency. Second, prolonged interruptions in material feeding can result in the drum being unloaded, meaning no manufactured sand inside. This causes energy waste due to continuous motor operation, resulting in higher power consumption.

[0041] In view of this, this application provides a manufactured sand mixing machine, which includes a machine body and a control component. The machine body includes a drive unit and a drum connected to the drive unit. The drum is used to hold manufactured sand. The drive unit is used to rotate and drive the drum to rotate. The drum is used to spray water onto the manufactured sand and stir the manufactured sand when rotating. The control component includes a control unit and a first detection unit. The first detection unit and the drive unit are both electrically connected to the control unit. The first detection unit is used to detect operating information, which includes at least one of the weight of the manufactured sand in the drum and the parameters of the drive unit, including the current of the drive unit or the hydraulic pressure of the drive unit. The control unit is used to control the rotation speed of the drive unit according to the operating information.

[0042] For example, the drive unit drives the drum to rotate via electric power. When the first detection unit detects an increase in the weight of the manufactured sand inside the drum; or when the weight of the manufactured sand increases, the drive unit outputs a larger electromagnetic torque, causing the first detection unit to detect an increase in the current of the drive unit; or when both the weight of the manufactured sand detected by the first detection unit and the current of the drive unit increase, the speed of the drive unit is increased by the control unit. This ensures that the rotation of the drum can fully mix the manufactured sand while reducing the need for manual intervention and simplifying operation. When the weight of the manufactured sand detected by the first detection unit is zero, that is, when the drum is unloaded, the speed of the drive unit is reduced by the control unit, or the drive unit is turned off, reducing the speed to zero. This reduces the energy waste caused by the drive unit continuing to operate at the original speed when the drum is unloaded, resulting in good energy-saving effect.

[0043] The present application will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0044] See Figure 1 and Figure 2 The manufactured sand mixing machine provided in this application includes a machine body 100 and a control component 200. The machine body 100 includes a drive component 110 and a drum 120 connected to the drive component 110. The drum 120 is used to hold manufactured sand. The drive component 110 is used to rotate and drive the drum 120 to rotate. The drum 120 is used to spray water onto the manufactured sand and stir the manufactured sand when rotating. The control component 200 includes a control component 210 and a first detection component 220. The first detection component 220 and the drive component 110 are both electrically connected to the control component 210. The first detection component 220 is used to detect operating information, which includes at least one of the weight of the manufactured sand in the drum 120 and the parameters of the drive component 110, including the current of the drive component 110 or the hydraulic pressure of the drive component 110. The control component 210 is used to control the rotational speed of the drive component 110 according to the operating information.

[0045] It should be noted that, in this embodiment, the driving component 110 can drive the roller 120 to rotate via electric drive, in which case the first detection component 220 is used to detect the current of the driving component 110; alternatively, the driving component 110 can drive the roller 120 to rotate via hydraulic drive, in which case the first detection component 220 is used to detect the hydraulic pressure of the driving component 110. This embodiment does not impose any limitations on these aspects.

[0046] Specifically, the drive unit 110 provides power to the drum 120, driving the drum 120 to rotate, and is the core component for realizing the mixing function; the drum 120 is mainly used to contain the manufactured sand and to complete the tasks of mixing and humidifying the manufactured sand during its rotation. The interior of the drum 120 is used to ensure that the manufactured sand and water are in full contact, thereby improving the mixing efficiency.

[0047] The control component 200 is used to realize intelligent speed regulation of the drive component 110, reducing the need for manual intervention and improving the accuracy and safety of the production process. Specifically, the first detection component 220 is responsible for detecting operating information, including at least one of the following: the weight of the manufactured sand inside the drum 120 and the parameters of the drive component 110, such as the current or hydraulic pressure of the drive component 110. The control component 210 then makes corresponding decisions based on the operating information, adjusting the working mode of the drive component 110 to ensure that the equipment is always in a good operating condition.

[0048] For example, in actual use, the drive unit 110 drives the drum 120 to rotate via electric drive. Depending on the load on the drum 120, the drive unit 110 can include a non-overload condition and an overload condition. Specifically, when the current of the drive unit 110 reaches the rated current, it corresponds to the overload condition; when the current of the drive unit 110 is less than the rated current but greater than zero, it corresponds to the non-overload condition. Correspondingly, when the weight of the manufactured sand inside the drum 120 reaches a preset value, it corresponds to the overload condition; when the weight of the manufactured sand is less than the preset value but greater than zero, it corresponds to the non-overload condition.

[0049] It should be noted that the specific value of the preset value can be set according to the rated current of the drive unit 110, etc., and this application embodiment does not limit it in this way.

[0050] Furthermore, by detecting the current of the drive unit 110 through the first detection element 220, it can be understood that when the drive unit 110 is under non-overload conditions, if the speed at which the operator feeds the manufactured sand into the drum 120 is greater than the discharge speed of the drum 120, the first detection element 220 will detect an increase in the weight of the manufactured sand inside the drum 120; or, when the weight of the manufactured sand increases, the drive unit 110 needs to output a larger electromagnetic torque, causing the first detection element 220 to detect an increase in the current of the drive unit 110; or, both the weight of the manufactured sand and the current of the drive unit 110 will increase. Thus, by controlling the speed of the drive unit 110 through the control element 210, the drum 120 rotates faster to match the amount of manufactured sand fed, ensuring that the rotation of the drum 120 can fully mix the manufactured sand while reducing the need for manual intervention and simplifying operation.

[0051] When the speed at which the operator feeds the manufactured sand into the drum 120 is less than the discharge speed of the drum 120, the first detection element 220 will detect a decrease in the weight of the manufactured sand inside the drum 120; or, when the weight of the manufactured sand decreases, the drive element 110 needs to output a smaller electromagnetic torque, causing the first detection element 220 to detect a decrease in the current of the drive element 110; or, both the weight of the manufactured sand and the current of the drive element 110 will decrease as detected by the first detection element 220. Thus, by controlling the drive element 110 to decelerate via the control element 210, the drum 120 operates at a lower speed, extending the residence time of the manufactured sand within the drum 120, ensuring that the manufactured sand is fully and uniformly wetted.

[0052] When there is no manufactured sand in the drum 120, the weight of the manufactured sand can be detected as zero by the first detection element 220. The control element 210 receives the detection information and controls the drive element 110 to shut down. Even if the speed of the drive element 110 drops to zero, the energy wasted by the drive element 110 running at the original speed when the drum 120 is unloaded is reduced, resulting in good energy saving.

[0053] When the drive component 110 is under overload conditions, the control component 210 controls the drive component 110 to decelerate when the first detection component 220 detects that the current of the drive component 110 has reached the rated current; or when the first detection component 220 detects that the weight of the manufactured sand has reached a preset value; or when the first detection component 220 detects that the current of the drive component 110 has reached the rated current and the weight of the manufactured sand has reached the preset value. This reduces the occurrence of overheating and damage to the drive component 110, and also reduces the occurrence of the roller 120 slipping due to overload and failing to rotate normally.

[0054] It is understandable that in practical applications, the embodiments of this application can simultaneously detect the weight of the manufactured sand in the drum 120 and the parameters of the drive component 110 through the first detection component 220, so that the control component 210 can judge the load of the drum based on the dual signals and control the rotation speed of the drive component 110, which helps to reduce misjudgment and improve control accuracy.

[0055] See Figure 2 In some examples, the first detection element 220 includes at least one of a first detection section 221 and a second detection section 222, which are electrically connected to the control element 210; wherein the first detection section 221 is used to detect the weight of the manufactured sand in the drum 120; and the second detection section 222 is used to detect the current of the drive element 110 or the hydraulic pressure of the drive element 110.

[0056] The weight of the manufactured sand inside the drum 120 is detected by the first detection unit 221, and the current or hydraulic pressure of the drive component 110 is detected by the second detection unit 222. The first detection unit 221 and the second detection unit 222 are electrically connected to the control unit 210, so that the control unit 210 can accurately and stably receive the detection information from the first detection unit 221 and the second detection unit 222, and automatically control the rotation speed of the drive component 110 according to the actual loading of the drum 120, so as to achieve the continuity and stability of the mixing of manufactured sand and reduce the need for manual intervention.

[0057] The specific type of the first detection unit 221 is not limited in this application embodiment. For example, the first detection unit 221 can be a weighing sensor. The drum 120 is used by rotating and being mounted on the support structure. The weighing structure is installed on the support structure to measure the total weight of the drum 120 and the material inside it. Then, by subtracting the weight of the drum 120, the weight of the manufactured sand inside the drum 120 can be obtained.

[0058] See Figures 1 to 4 In some embodiments, the second detection unit 222 is used to detect the current of the drive unit 110, which includes a variable frequency motor 111 and a frequency converter 112 electrically connected to the variable frequency motor 111; the frequency converter 112 is electrically connected to the control unit 210, and the drive shaft of the variable frequency motor 111 is connected to the roller 120; the control unit 210 is used to control the output frequency of the frequency converter 112 according to the detection information of at least one of the first detection unit 221 and the second detection unit 222, so as to adjust the speed of the variable frequency motor 111.

[0059] The variable frequency motor 111 is used to provide a power source and has the function of speed adjustment according to external signals. In specific implementation, the variable frequency motor 111 has a wide speed adjustment range and smooth starting characteristics, which helps to reduce the impact on the power grid during startup and reduce mechanical shock.

[0060] The frequency converter 112 serves as the interface between the power supply and the variable frequency motor 111, converting the input power supply into a frequency and voltage suitable for the operation of the variable frequency motor 111. The frequency converter 112 not only enables precise control of the motor speed but also provides various protection functions, such as overcurrent, overvoltage, and undervoltage protection, which helps to enhance the stability and safety of the drive unit 110.

[0061] As mentioned earlier, when the drive unit 110 is under non-overload conditions, if the speed at which the operator feeds the manufactured sand into the drum 120 exceeds the discharge speed of the drum 120, the first detection unit 221 will detect an increase in the weight of the manufactured sand inside the drum 120; or, when the weight of the manufactured sand increases, the variable frequency motor 111 needs to output a larger electromagnetic torque, causing the second detection unit 222 to detect an increase in the current of the variable frequency motor 111; or, both the first detection unit 221 and the second detection unit 222 detect an increase in the weight of the manufactured sand and the current of the variable frequency motor 111. Thus, the output frequency of the frequency converter 112 is increased by the control unit 210, thereby increasing the speed of the variable frequency motor 111.

[0062] The specific types of the variable frequency motor 111 and the second detection unit 222 are not limited in this application embodiment. For example, the variable frequency motor 111 can be a permanent magnet synchronous motor, a variable torque variable frequency motor 111, a brushless DC motor, and a switched reluctance motor, etc.

[0063] The second detection unit 222 can be a Hall effect current sensor. A Hall effect current sensor operates based on the Hall effect (that is, when current passes through a conductor, a magnetic field is generated around the conductor. The Hall effect current sensor uses a Hall element to sense changes in this magnetic field and converts it into a voltage signal output. This voltage signal is proportional to the current intensity, thereby achieving current measurement). Installed on the cable of the drive unit 110, it can measure the DC or AC current intensity of the motor without disconnecting the circuit. The second detection unit 222 can also be a power analyzer. The power analyzer can monitor the current consumption of the drive unit 110 and provide detailed electrical parameter information, including current, voltage, and power factor.

[0064] In a specific implementation, the control unit 210 is a programmable logic controller; and / or, the first detection unit 221 is a pressure sensor; and / or, the second detection unit 222 is a current transformer.

[0065] Among them, the programmable logic controller can support a variety of input and output interfaces and can be integrated with other components in the manufactured sand mixing machine; in addition, the programmable logic controller has strong anti-interference ability and high stability, which can meet the requirements of long-term continuous operation.

[0066] The pressure sensor has high sensitivity and accuracy, and can quickly respond to changes in the weight of manufactured sand; in addition, the pressure sensor can be directly installed on the support point of the drum 120, making installation relatively convenient.

[0067] A current transformer is a non-contact detection device that can measure current without disconnecting the circuit, meeting the needs of practical applications. Furthermore, current transformers can quickly capture current changes, providing instant feedback to programmable logic controllers. In addition, current transformers have good versatility and can be applied to different types of variable frequency motors.

[0068] See Figure 5 and Figure 6 In other examples, the second detection unit 222 is used to detect the hydraulic pressure of the drive unit 110, which includes a hydraulic pump station 113, a hydraulic motor 114, and a control valve 115. The hydraulic pump station 113 is connected to the hydraulic motor 114 through the control valve 115, and the hydraulic pump station 113 is used to supply hydraulic oil to the hydraulic motor 114 through the control valve 115 to make the hydraulic motor 114 rotate. The control valve 115 is electrically connected to the control unit 210, and the drive shaft of the hydraulic motor 114 is connected to the roller 120. The control unit 210 is used to control the opening degree of the control valve 115 according to the detection information of at least one of the first detection unit 221 and the second detection unit 222 to adjust the speed of the hydraulic motor 114.

[0069] Specifically, the hydraulic pump station 113 is used to supply hydraulic oil to the hydraulic motor 114 to provide power support; the hydraulic motor 114 converts hydraulic energy into mechanical energy to drive the drum 120 to rotate and complete the stirring task. In practice, the hydraulic motor 114 has good low-speed performance and high torque output characteristics, which can meet the needs of heavy-duty and intermittent working occasions, and the maintenance is relatively simple.

[0070] Control valve 115 controls the speed of hydraulic motor 114 by adjusting the flow rate of hydraulic oil entering hydraulic motor 114. Electrically connecting control valve 115 to control component 210 and changing the opening degree of control valve 115 electronically reduces the need for manual intervention, enabling smooth adjustment of the speed of hydraulic motor 114 and improving the overall controllability and response speed of drive component 110.

[0071] As mentioned earlier, when the drive unit 110 is under non-overload conditions, if the speed at which the operator feeds the manufactured sand into the drum 120 is greater than the discharge speed of the drum 120, the first detection unit 221 will detect an increase in the weight of the manufactured sand inside the drum 120; or, when the weight of the manufactured sand increases, the hydraulic motor 114 needs to output a larger hydraulic torque, causing the second detection unit 222 to detect an increase in the hydraulic pressure of the hydraulic motor 114; or, both the first detection unit 221 and the second detection unit 222 detect an increase in the weight of the manufactured sand and the hydraulic pressure of the hydraulic motor 114. Thus, by increasing the opening of the control valve 115 through the control unit 210, more hydraulic oil is obtained by the hydraulic motor 114, thereby increasing its rotational speed.

[0072] The second detection unit 222 in this embodiment can be a pressure sensor. The pressure sensor is installed at the inlet of the hydraulic motor 114 to detect the pressure change of the hydraulic oil supplied by the hydraulic pump station 113 to the hydraulic motor 114.

[0073] See Figure 2 , Figure 3 and Figure 6 In some embodiments, the control assembly 200 further includes a second detection element 230. The roller 120 includes a cylindrical portion 121 and a plurality of water spraying parts 122 connected to the cylindrical portion 121. The cylindrical portion 121 is connected to the drive member 110. The cylindrical portion 121 has a receiving cavity 1211 for placing manufactured sand. The water spraying parts 122 are placed in the receiving cavity 1211. The second detection element 230 and the water spraying parts 122 are both electrically connected to the control member 210. The second detection element 230 is used to detect whether the cylindrical portion 121 is rotating. The control member 210 is also used to control each water spraying part 122 to start when the second detection element 230 detects that the cylindrical portion 121 is rotating, so as to spray water onto the manufactured sand.

[0074] In this way, by intelligently adjusting the timing of water spraying, no manual intervention is required, simplifying the operation process and reducing the possibility of human error. Specifically, the water spraying unit 122 is activated to spray water onto the manufactured sand only when the cylinder part 121 rotates, which helps to improve water use efficiency, reduce unnecessary water waste, and reduce corrosion of the cylinder part 121 caused by water accumulation in the receiving cavity 1211, thereby extending the service life of the roller 120.

[0075] For example, the second detection element 230 can be configured as a rotary encoder, which is installed on the drive shaft of the variable frequency motor 111; or the drive shaft of the hydraulic motor 114; or the outer wall of the cylinder 121 to detect whether the cylinder 121 is rotating; the water spraying part 122 can be configured as a high-pressure nozzle, which is used to generate a fine and uniform water mist, which can more effectively distribute water into the manufactured sand.

[0076] See Figure 1 and Figure 5 In some examples, the body 100 also includes a transmission assembly 130, through which the drive component 110 is connected to the roller 120.

[0077] With this configuration, the power output from the drive unit 110 (as mentioned above, i.e., the variable frequency motor 111 or the hydraulic motor 114) is smoothly and reliably transmitted to the drum 120 through the transmission assembly 130, so as to drive the drum 120 to rotate, ensuring the efficiency and stability of power transmission.

[0078] See Figure 4For example, the transmission assembly 130 includes a coupling 131, two idler shafts 132, and two idler groups; the idler shafts 132 and the idler groups correspond one-to-one, and each idler group includes at least two idlers 133. The at least two idlers 133 are spaced apart and sleeved on the corresponding idler shafts 132. The two idler shafts 132 are respectively arranged on opposite sides of the drum 120. The two idler shafts 132 are connected to the drive shaft of the drive member 110 through the coupling 131 so that the idlers 133 contact the drum 120. The drive shaft of the drive member 110 is used to rotate and drive the idler shafts 132 and the idlers 133 to rotate. The idlers 133 are used to rub against the drum 120 when rotating so as to drive the drum 120 to rotate in the opposite direction.

[0079] The coupling 131 connects the drive shaft of the drive component 110, such as the variable frequency motor 111 or the hydraulic motor 114, to the idler shaft 132, realizing smooth power transmission. The idler shaft 132 provides stable support for the idler group and is connected to the drive shaft of the drive component 110 through the coupling 131, transmitting the power of the drive component 110 to the idler 133 and ensuring that the idler 133 can rotate smoothly. Each idler group contains at least two idlers 133, with each idler 133 spaced on the corresponding idler shaft 132. The friction between the idler 133 and the outer wall of the drum 120 drives the drum 120 to rotate, thereby evenly distributing the load, reducing the wear of individual idlers 133, and extending their service life.

[0080] Continue reading Figure 4 Furthermore, the transmission assembly 130 also includes a speed reducer, which includes a first speed reducer 134, and the drive shaft of the drive member 110 is connected to the coupling 131 through the first speed reducer 134; or, the speed reducer includes a second speed reducer and a V-belt (not shown) connected to the second speed reducer, the drive shaft of the drive member 110 is connected to the second speed reducer, and the V-belt is connected to the coupling 131.

[0081] Among them, the drive component 110, namely the variable frequency motor 111 or the hydraulic motor 114, usually has a high speed and a low torque. During use, the speed and torque output by the drive component 110 are adjusted by the reduction component to meet the requirements of the drum 120 for low speed and high torque to achieve efficient mixing. In addition, by setting the reduction component, the transmission ratio can be flexibly adjusted according to the actual working conditions, making the machine sand wet mixer more adaptable.

[0082] Specifically, the first reducer 134 includes a multi-stage gear transmission device, which enables precise speed regulation and torque amplification, ensuring that the drum 120 operates at the actual required speed and torque.

[0083] The second reducer includes a multi-stage gear transmission device, which can achieve precise speed regulation and torque amplification through multi-stage gear transmission, ensuring that the drum 120 operates at the actual required speed and torque; the V-belt realizes the flexible connection between the second reducer and the coupling 131, which can effectively absorb the impact and vibration during startup and load changes, thereby helping to reduce the damage to the drive component 110 and the transmission component 130.

[0084] See Figure 1 and Figure 3 In a specific example, the body 100 also includes a connecting component 140, which includes a support member 141 and a protective member 142. The support member 141 is used to be placed on the target surface, and the side of the support member 141 facing away from the target surface has a supporting surface, on which the roller 120 is placed. The protective member 142 covers the outer periphery of the roller 120.

[0085] The target surface can be set according to the specific installation location of the manufactured sand mixing machine. For example, the target surface can be the ground or a foundation platform. The side of the support member 141 away from the target surface has a support surface. The roller 120 is placed on the support surface to provide stable support for the roller 120, reduce the vibration and displacement phenomenon of the roller 120 due to uneven support, and help improve the stability of the roller 120 during rotation.

[0086] By covering the outer periphery of the roller 120 with the protective component 142, it is beneficial to reduce the occurrence of injuries to workers due to accidental contact with the high-speed rotating roller 120, and provides additional safety protection for workers.

[0087] For example, the support member 141 can be made of a robust and durable material, such as steel or a high-strength alloy, to ensure that it can withstand the weight of the drum 120 and the manufactured sand inside the drum 120. The support member 141 includes four support rods 1411. By setting four first detection parts 221, which are pressure sensors, and the pressure sensors are installed one by one below the support rods 1411, when the support member 141 is placed on the target surface, each pressure sensor is in contact with the target surface. When manufactured sand is put into the drum, the weight of the manufactured sand is detected by each pressure sensor.

[0088] The protective component 142 can be made of metal sheet or other corrosion-resistant materials, and has good sealing and impact resistance.

[0089] In summary, the manufactured sand mixing machine provided in this application embodiment, by setting a first detection element 220 and a control element 210, for example, the drive element 110 drives the drum 120 to rotate by electric drive. When the first detection element 220 detects an increase in the weight of the manufactured sand in the drum 120; or, when the weight of the manufactured sand increases, the drive element 110 needs to output a larger electromagnetic torque, resulting in an increase in the current of the drive element 110 detected by the first detection element 220; or, when both the weight of the manufactured sand detected by the first detection element 220 and the current of the drive element 110 increase... By increasing the rotation speed of the drive component 110 through the control component 210, the rotation of the drum 120 can ensure that the manufactured sand is thoroughly mixed, while reducing the need for manual intervention and simplifying operation. When the first detection component 220 detects that the weight of the manufactured sand in the drum 120 is zero, that is, when the drum 120 is unloaded, the rotation speed of the drive component 110 is reduced by the control component 210, or the drive component 110 is turned off, so that the rotation speed is reduced to zero. This can reduce the waste of electricity caused by the drive component 110 continuing to run at the original speed when the drum 120 is unloaded, resulting in good energy-saving effect.

[0090] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A manufactured sand mixing and wetting machine, characterized in that, include: The machine body (100) includes a drive unit (110) and a drum (120) connected to the drive unit (110). The drum (120) is used to hold manufactured sand. The drive unit (110) is used to rotate and drive the drum (120) to rotate. The drum (120) is used to spray water onto the manufactured sand and stir the manufactured sand when rotating. A control component (200) includes a control element (210) and a first detection element (220). The first detection element (220) and the drive element (110) are both electrically connected to the control element (210). The first detection element (220) is used to detect operating information, which includes at least one of the weight of the manufactured sand in the drum (120) and the parameters of the drive element (110), including the current of the drive element (110) or the hydraulic pressure of the drive element (110). The control element (210) is used to control the rotational speed of the drive element (110) according to the operating information.

2. The manufactured sand mixing machine according to claim 1, characterized in that, The first detection element (220) includes at least one of a first detection unit (221) and a second detection unit (222), and the first detection unit (221) and the second detection unit (222) are electrically connected to the control unit (210); The first detection unit (221) is used to detect the weight of the manufactured sand in the drum (120); the second detection unit (222) is used to detect the current of the drive unit (110) or the hydraulic pressure of the drive unit (110).

3. The manufactured sand mixing machine according to claim 2, characterized in that, The second detection unit (222) is used to detect the current of the drive unit (110), which includes a variable frequency motor (111) and a frequency converter (112) electrically connected to the variable frequency motor (111). The frequency converter (112) is electrically connected to the control unit (210), and the drive shaft of the variable frequency motor (111) is connected to the roller (120). The control unit (210) is used to control the output frequency of the frequency converter (112) according to the detection information of at least one of the first detection unit (221) and the second detection unit (222) to adjust the speed of the variable frequency motor (111).

4. The manufactured sand mixing machine according to claim 3, characterized in that, The control unit (210) is a programmable logic controller; and / or, the first detection unit (221) is a pressure sensor; and / or, the second detection unit (222) is a current transformer.

5. The manufactured sand mixing machine according to claim 2, characterized in that, The second detection unit (222) is used to detect the hydraulic pressure of the drive unit (110), which includes a hydraulic pump station (113), a hydraulic motor (114), and a control valve (115). The hydraulic pump station (113) is connected to the hydraulic motor (114) through the control valve (115). The hydraulic pump station (113) is used to supply hydraulic oil to the hydraulic motor (114) through the control valve (115) to make the hydraulic motor (114) rotate. The control valve (115) is electrically connected to the control component (210). The drive shaft of the hydraulic motor (114) is connected to the roller (120). The control component (210) is used to control the opening of the control valve (115) according to the detection information of at least one of the first detection unit (221) and the second detection unit (222) to adjust the speed of the hydraulic motor (114).

6. The manufactured sand mixing and wetting machine according to any one of claims 1 to 5, characterized in that, The control assembly (200) further includes a second detection element (230). The roller (120) includes a cylindrical body (121) and a plurality of water spray sections (122) connected to the cylindrical body (121). The cylindrical body (121) is connected to the drive element (110). The cylindrical body (121) has a receiving cavity (1211) for placing manufactured sand. The water spray sections (122) are placed in the receiving cavity (1211). The second detection element (230) and the water spraying part (122) are both electrically connected to the control element (210). The second detection element (230) is used to detect whether the cylinder part (121) is rotating. The control element (210) is also used to control each of the water spraying parts (122) to start when the second detection element (230) detects that the cylinder part (121) is rotating, so as to spray water onto the manufactured sand.

7. The manufactured sand mixing and wetting machine according to any one of claims 1 to 5, characterized in that, The machine body (100) also includes a transmission assembly (130), and the drive component (110) is connected to the roller (120) via the transmission assembly (130).

8. The manufactured sand mixing machine according to claim 7, characterized in that, The transmission assembly (130) includes a coupling (131), two idler shafts (132), and two idler sets; The idler shaft (132) and the idler group correspond one-to-one. The idler group includes at least two idlers (133). At least two idlers (133) are spaced apart and sleeved on the corresponding idler shaft (132). The two idler shafts (132) are respectively arranged on opposite sides of the drum (120). The two idler shafts (132) are connected to the drive shaft of the drive member (110) through the coupling (131) so that the idler (133) contacts the drum (120). The drive shaft of the drive member (110) is used to rotate and drive the idler shaft (132) and the idler (133) to rotate. The idler (133) is used to rub against the drum (120) when rotating, so as to drive the drum (120) to rotate in the opposite direction.

9. The manufactured sand mixing machine according to claim 8, characterized in that, The transmission assembly (130) further includes a reduction gear, which includes a first reducer (134). The drive shaft of the drive member (110) is connected to the coupling (131) via the first reducer (134); or, The speed reducer includes a second speed reducer and a V-belt connected to the second speed reducer. The drive shaft of the drive member (110) is connected to the second speed reducer, and the V-belt is connected to the coupling (131).

10. The manufactured sand mixing and wetting machine according to any one of claims 1 to 5, characterized in that, The body (100) further includes a connecting assembly (140), the connecting assembly (140) comprising: A support member (141) is used to be placed on a target surface, the support member (141) has a support surface on the side opposite to the target surface, and the roller (120) is placed on the support surface; A protective element (142) is provided on the outer periphery of the roller (120).

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