Monitoring and operation control system for resin sand equipment

Abstract

This utility model relates to a monitoring and operation control system for resin sand equipment, belonging to the field of resin sand casting technology. It includes a wireless communication module, an industrial switch, a central control unit, and at least one sand mixing control unit installed on the sand mixer. The wireless communication module and the industrial switch are electrically connected. The industrial switch communicates remotely with a mobile terminal through the wireless communication module. The central control unit includes a central control module electrically connected to the industrial switch and a central touchscreen electrically connected to the central control module. The sand mixing control unit has a sand mixing control module electrically connected to the central control module, an electrically controlled sand inlet valve, an electrically controlled liquid inlet valve, a first touchscreen, and at least one rotary motor, all electrically connected to the sand mixing control module. This utility model can remotely monitor and adjust the sand mixing operation, solving the technical problem of high manual labor intensity in sand mixing operations.

Description

Technical Field

[0001] This utility model relates to the field of resin sand casting technology, and in particular to a monitoring and operation control system for resin sand equipment. Background Technology

[0002] Utilizing an ester-curing phenolic resin system, the curing process requires no external heat source, achieving self-curing through the reaction between the resin and the curing agent. The molding sand exhibits excellent collapsibility, facilitating sand removal. After curing, the strength remains stable, making it suitable for the production of cast steel and ductile iron parts. It reduces the incidence of porosity and sand inclusion defects, improving product qualification rates. There are no harmful element emissions, meeting green casting requirements.

[0003] Currently, all steps in resin casting are controlled by decentralized on-site monitoring. This decentralized monitoring means that technical personnel must always be on-site to make adjustments and monitor the process, resulting in high labor intensity. Utility Model Content

[0004] In view of the shortcomings of the related technologies, this utility model provides a monitoring and operation control system for resin sand equipment, which can remotely monitor and adjust the sand mixing operation to solve the technical problem of high manual labor intensity in sand mixing operation.

[0005] This utility model provides a monitoring and operation control system for resin sand equipment, including a wireless communication module, an industrial switch, a central control unit, and at least one sand mixing control unit installed on the sand mixer; the wireless communication module and the industrial switch are electrically connected; the industrial switch communicates remotely with a mobile terminal through the wireless communication module; the central control unit includes a central control module electrically connected to the industrial switch, and a central touch screen electrically connected to the central control module; the sand mixing control unit has a sand mixing control module electrically connected to the central control module, an electrically controlled sand inlet valve, an electrically controlled liquid inlet valve, a first touch screen, and at least one rotary motor electrically connected to the sand mixing control module.

[0006] In some embodiments, the monitoring and operation control system of the resin sand equipment further includes a regeneration control unit installed on the resin sand regenerator. The regeneration control unit has a regeneration control module electrically connected to the main control module, a second touch screen electrically connected to the regeneration control module, and at least one vibration motor.

[0007] In some embodiments, the monitoring and operation control system of the resin sand equipment also includes a dust removal control unit installed on the dust collector. The dust removal control unit has a dust removal control module electrically connected to the main control module, a third touch screen electrically connected to the dust removal control module, and at least one fan.

[0008] In some embodiments, the dust removal control unit also has an electrically controlled gas pulse valve that is electrically connected to the dust removal control module.

[0009] In some embodiments, the dust removal control unit also has a differential pressure sensor electrically connected to the dust removal control module.

[0010] In some embodiments, the main control unit also has a main audible and visual alarm electrically connected to the main control module, the sand mixing control unit also has a first audible and visual alarm electrically connected to the sand mixing control module, the regeneration control unit also has a second audible and visual alarm electrically connected to the regeneration control module, and the dust removal control unit also has a third audible and visual alarm electrically connected to the dust removal control module.

[0011] In some embodiments, the main control module is a main PLC module, the sand mixing control module is a sand mixing PLC module, the regeneration control module is a regeneration PLC module, and the dust removal control module is a dust removal PLC module.

[0012] In some embodiments, the main control unit further includes a main contactor electrically connected to the main control module and connected in series with the main control unit power circuit; the sand mixing control unit further includes a first contactor electrically connected to the sand mixing control module and connected in series with the sand mixer power circuit; the regeneration control unit further includes a second contactor electrically connected to the regeneration control module and connected in series with the resin sand regeneration machine power circuit; and the dust removal control unit further includes a third contactor electrically connected to the dust removal control module and connected in series with the dust collector power circuit.

[0013] In some embodiments, the sand mixing control unit further includes a first sand temperature regulation module and a first temperature sensor electrically connected to the sand mixing control module, and the regeneration control unit further includes a second sand temperature regulation module and a second temperature sensor electrically connected to the regeneration control module.

[0014] In some embodiments, the central control unit also includes a display screen electrically connected to the central control module.

[0015] Compared with the prior art, the beneficial effects of this utility model are as follows: Operators can send sand mixing, regeneration, dust removal, and dust collector cleaning commands to the central control module via mobile terminals. The central control module then issues commands to the corresponding control modules, which, upon receiving the commands, perform the corresponding operations in sand mixing, regeneration, dust removal, and dust collector cleaning based on their internal control logic. The aforementioned monitoring and operation control system for resin sand equipment allows for remote monitoring and adjustment of resin sand regeneration and sand mixing operations, saving manpower. Attached Figure Description

[0016] The accompanying drawings, which are included to provide a further understanding of the present invention and form part of this application, illustrate exemplary embodiments of the present invention and, together with the description thereof, serve to explain the present invention and do not constitute an undue limitation thereof. In the drawings: Figure 1This is a schematic diagram of the monitoring and operation control system of the resin sand equipment in a specific embodiment of this utility model. Detailed Implementation

[0017] The technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0018] In the description of this utility model, it should be understood that the terms "center", "lateral", "longitudinal", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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 utility model.

[0019] The terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include one or more of that feature.

[0020] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0021] like Figure 1As shown in the illustrative embodiment of the monitoring and operation control system for the resin sand equipment provided by this utility model, the monitoring and operation control system for the resin sand equipment includes at least a wireless communication module, an industrial switch, a central control unit, and at least one sand mixing control unit installed on the sand mixer; the wireless communication module and the industrial switch are electrically connected; the industrial switch communicates remotely with a mobile terminal through the wireless communication module; the central control unit includes a central control module electrically connected to the industrial switch, and a central touch screen electrically connected to the central control module; the sand mixing control unit has a sand mixing control module electrically connected to the central control module, an electrically controlled sand inlet valve, an electrically controlled liquid inlet valve, a first touch screen, and at least one rotary motor electrically connected to the sand mixing control module.

[0022] Each sand mixing control unit corresponds to a sand mixer, and each control unit is installed in its corresponding mixer. An electrically controlled sand inlet valve controls the entry of sand into the mixer. An electrically controlled liquid inlet valve controls the entry of resin and hardener into the mixer. A rotary motor drives the mixing mechanism inside the mixer to ensure uniform mixing of the sand, resin, and hardener.

[0023] Sand mixers are common equipment in this field. See CN206492893U for a novel resin sand mixer and CN215392317U for a double-arm continuous resin sand mixer. When the sand mixing control unit is installed in the novel resin sand mixer described in CN206492893U, one rotary motor is provided, which serves as the feed motor for the mixer. When the sand mixing control unit is installed in the double-arm continuous resin sand mixer described in CN215392317U, two rotary motors are provided, serving as the first drive motor and the second drive motor for the mixer.

[0024] Operators can send sand mixing commands to the central control module via mobile terminal. The central control module then distributes these commands to all sand mixing control modules. Upon receiving the commands, each control module uses its internal control logic to operate the electrically controlled sand inlet valve, electrically controlled liquid inlet valve, and all rotating motors to perform the sand mixing operation and produce resin sand. The monitoring and operation control system of the aforementioned resin sand equipment allows for remote monitoring and adjustment of the sand mixing operation, saving manpower.

[0025] In addition, operators can input commands to the sand mixing control module via the main touchscreen or the first touchscreen to regulate the operation of the electrically controlled sand inlet valve, the electrically controlled liquid inlet valve, and all rotating motors.

[0026] Preferably, when any one of the mobile terminal, the main touchscreen, and the first touchscreen sends a command to the sand mixing control module, the sand mixing control module automatically blocks commands from the other two. Similarly, when any one of the mobile terminal and the main touchscreen sends a command to the main control module, the main control module automatically blocks commands from the other.

[0027] Furthermore, operators can remotely control the opening degree of the electrically controlled sand inlet valve and the electrically controlled liquid inlet valve via mobile terminals. Operators can also remotely control the rotational speed of the rotary motor via mobile terminals.

[0028] In some embodiments, the monitoring and operation control system of the resin sand equipment further includes a regeneration control unit installed in the resin sand regenerator. The regeneration control unit has a regeneration control module electrically connected to the main control module, a second touchscreen electrically connected to the regeneration control module, and at least one vibrating motor. The vibrating motor provides power for crushing and screening the molding sand. The resin sand regenerator can remove metal from the old sand using an internally installed permanent magnet structure or electromagnetic structure.

[0029] Operators can send regeneration commands to the central control module via mobile terminals. The central control module then issues regeneration commands to the regeneration control module. Upon receiving the regeneration commands, the regeneration control module uses its internal control logic to operate all vibrating motors to crush, demold, and screen the molding sand, transforming it into regenerated sand that can be fed into a sand mixer for secondary use. The monitoring and operation control system of the aforementioned resin sand equipment allows for remote monitoring and adjustment of sand mixing and regeneration operations, saving manpower.

[0030] Preferably, when any one of the mobile terminal, the main touch screen, and the second touch screen sends a command to the regeneration control module, the regeneration control module automatically blocks the commands from the other two.

[0031] Furthermore, operators can remotely control the vibration magnitude of the vibratory motor via a mobile terminal.

[0032] Furthermore, the regeneration control unit also includes an electromagnetic structure electrically connected to the regeneration control module. Upon receiving a regeneration command, the regeneration control module controls the operation of the electromagnetic structure and all vibrating motors based on its internal control logic. The electromagnetic structure is used to remove metal from the old sand. Operators can remotely adjust the magnetic force of the electromagnetic structure via a mobile terminal.

[0033] Furthermore, the regeneration control unit also includes a drive motor electrically connected to the regeneration control module, allowing operators to remotely control the speed of the drive motor via a mobile terminal. Upon receiving a regeneration command, the regeneration control module controls the operation of the electromagnetic structure, drive motor, and all vibrating motors based on its internal control logic. The drive motors drive objects including, but not limited to, belt conveyors, chain conveyors, and elevators, to drive the old sand to flow between various processes within the resin sand regeneration machine. These processes include a crushing process controlled by vibrating motors, a demolding process controlled by the electromagnetic structure, and a screening process controlled by vibrating motors. This resin sand regeneration machine can be referenced in CN213671672U, which describes a resin sand regeneration system.

[0034] In some embodiments, the monitoring and operation control system of the resin sand equipment also includes a dust removal control unit installed in the dust collector. The dust removal control unit has a dust removal control module electrically connected to the main control module, a third touchscreen electrically connected to the dust removal control module, and at least one fan. The fan is used to draw dust-laden air into the dust collector. Operators can remotely control the fan speed via a mobile terminal.

[0035] Operators can send dust removal commands to the central control module via mobile terminal. The central control module then issues dust removal commands to the dust removal control module. Upon receiving the commands, the dust removal control module controls all fans based on its internal control logic. The dust collector has an internal filtration structure. Dust drawn into the dust collector by the fans is trapped inside by the filtration structure. The monitoring and operation control system of the aforementioned resin sand equipment allows for remote monitoring and adjustment of sand mixing, regeneration, and dust removal operations, saving manpower.

[0036] Preferably, when any one of the mobile terminal, the main touch screen, and the third touch screen sends a command to the dust removal control module, the dust removal control module automatically blocks the commands from the other two.

[0037] In some embodiments, the dust removal control unit also includes an electrically controlled gas pulse valve electrically connected to the dust removal control module. The electrically controlled gas pulse valve is normally closed. Operators can remotely adjust the pulse airflow magnitude of the electrically controlled gas pulse valve via a mobile terminal.

[0038] Operators can send dust collector cleaning commands to the central control module via mobile terminal. The central control module then issues the cleaning command to the dust collector control module. Upon receiving the cleaning command, the dust collector control module shuts down all fans and activates the electrically controlled gas pulse valve based on its internal control logic. The electrically controlled gas pulse valve sprays airflow in the reverse direction towards the filter structure, causing the dust clogging the filter structure to dislodge and restoring its original filtration efficiency. The monitoring and operation control system of the above-mentioned resin sand equipment can remotely monitor and adjust sand mixing, regeneration, dust removal, and dust collector cleaning operations, saving manpower. This dust collector can be referenced to a pulse dust collector described in CN204973361U.

[0039] In some embodiments, the dust removal control unit also includes a differential pressure sensor electrically connected to the dust removal control module. The differential pressure sensor is used to detect the pressure difference between the inlet and outlet sides of the dust collector.

[0040] Operators can remotely read the detection results of the differential pressure sensor through a mobile terminal. When the detection result of the differential pressure sensor is greater than the preset threshold, it can be determined that the filter structure in the dust collector is severely blocked. At this time, the operator should send a dust collector cleaning command to the central control module through the mobile terminal.

[0041] In some embodiments, the central control unit also includes a central audible and visual alarm electrically connected to the central control module. When the operator or the control logic set by the operator within the central control module determines that the central control unit is in an abnormal operating state, the central audible and visual alarm issues an alarm signal.

[0042] The sand mixing control unit also has a first audible and visual alarm electrically connected to the sand mixing control module. When the operator or the control logic set by the operator in the sand mixing control module determines that the operating status of the sand mixing control unit is abnormal, the first audible and visual alarm will issue an alarm signal.

[0043] The regeneration control unit also has a second audible and visual alarm electrically connected to the regeneration control module. When the operator or the control logic set by the operator in the regeneration control module determines that the operating status of the regeneration control unit is abnormal, the second audible and visual alarm will issue an alarm signal.

[0044] The dust removal control unit also includes a third audible and visual alarm electrically connected to the dust removal control module. When the operator or the control logic set by the operator in the dust removal control module determines that the operating status of the dust removal control unit is abnormal, the third audible and visual alarm will issue an alarm signal.

[0045] In some embodiments, the main control module is a main PLC module, which facilitates operator debugging of the control logic for multiple processes such as sand mixing, dust removal, and regeneration. The sand mixing control module is a sand mixing PLC module, which facilitates operator debugging of the control logic for the sand mixing process. The regeneration control module is a regeneration PLC module, which facilitates operator debugging of the control logic for the regeneration process. The dust removal control module is a dust removal PLC module, which facilitates operator debugging of the control logic for the dust removal process.

[0046] In some embodiments, the main control unit also has a main contactor electrically connected to the main control module and connected in series in the main control unit's power supply circuit, so that the operator can quickly cut off the power supply to the main control unit when the main control unit's operating state is abnormal.

[0047] The sand mixing control unit also has a first contactor that is electrically connected to the sand mixing control module and connected in series with the power supply circuit of the sand mixer, so that the operator can quickly cut off the power supply of the sand mixer when the operating status of the sand mixing control unit is abnormal.

[0048] The regeneration control unit also has a second contactor that is electrically connected to the regeneration control module and connected in series with the power supply circuit of the resin sand regenerator, so that the operator can quickly cut off the power supply to the resin sand regenerator when the operating status of the regeneration control unit is abnormal.

[0049] The dust removal control unit also includes a third contactor that is electrically connected to the dust removal control module and connected in series with the dust collector's power supply circuit, so that the operator can quickly cut off the power supply to the dust collector when the dust removal control unit is in an abnormal operating state.

[0050] In some embodiments, the main control unit also includes a main circuit breaker connected in series in the main control unit's power supply circuit to quickly disconnect the power supply to the main control unit in case of overload, short circuit, or undervoltage problems in the main control unit's circuit. The sand mixing control unit also includes a first circuit breaker connected in series in the sand mixer's power supply circuit to quickly disconnect the power supply to the sand mixer in case of overload, short circuit, or undervoltage problems in the sand mixing control unit's circuit. The regeneration control unit also includes a second circuit breaker connected in series in the resin sand regeneration machine's power supply circuit to quickly disconnect the power supply to the resin sand regeneration machine in case of overload, short circuit, or undervoltage problems in the regeneration control unit's circuit. The dust removal control unit also includes a third circuit breaker connected in series in the dust collector's power supply circuit to quickly disconnect the power supply to the dust collector in case of overload, short circuit, or undervoltage problems in the dust removal control unit's circuit.

[0051] In some embodiments, the sand mixing control unit further includes a first sand temperature control module and a first temperature sensor electrically connected to the sand mixing control module, so that an operator can adjust the temperature inside the sand mixer via a mobile terminal. The regeneration control unit further includes a second sand temperature control module and a second temperature sensor electrically connected to the regeneration control module, so that an operator can adjust the temperature inside the resin sand regeneration machine via a mobile terminal.

[0052] In some embodiments, the central control unit also includes a display screen electrically connected to the central control module, so that personnel on site can quickly obtain the operating status of the sand mixer, resin sand regenerator and dust collector.

[0053] In some embodiments, the wireless communication module, industrial switch, central control module, regeneration control module, dust removal control module, and all sand mixing control modules are electrically connected via PN lines.

[0054] Through the description of several embodiments of the monitoring and operation control system for the resin sand equipment of this utility model, it can be seen that the embodiments of the monitoring and operation control system for the resin sand equipment of this utility model have at least the following advantages: Operators can send sand mixing, regeneration, dust removal, and dust collector cleaning commands to the central control module via mobile terminals. The central control module then issues commands to the corresponding control modules, which, upon receiving the commands, perform the corresponding operations in sand mixing, regeneration, dust removal, and dust collector cleaning based on their internal control logic. The aforementioned monitoring and operation control system for resin sand equipment allows for remote monitoring and adjustment of resin sand regeneration and sand mixing operations, saving manpower.

[0055] Finally, it should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0056] The above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A monitoring and operating control system for a resin sand plant, characterized in that The system includes a wireless communication module, an industrial switch, a central control unit, and at least one sand mixing control unit installed on the sand mixer; the wireless communication module and the industrial switch are electrically connected; the industrial switch communicates remotely with a mobile terminal through the wireless communication module; the central control unit includes a central control module electrically connected to the industrial switch, and a central touch screen electrically connected to the central control module; the sand mixing control unit has a sand mixing control module electrically connected to the central control module, an electrically controlled sand inlet valve, an electrically controlled liquid inlet valve, a first touch screen, and at least one rotary motor electrically connected to the sand mixing control module.

2. A monitoring and operating control system for a resin sand plant according to claim 1, characterized in that It also includes a regeneration control unit installed on the resin sand regeneration machine, the regeneration control unit having a regeneration control module electrically connected to the main control module, a second touch screen electrically connected to the regeneration control module, and at least one vibration motor.

3. The monitoring and operation control system for the resin sand equipment according to claim 2, characterized in that, It also includes a dust removal control unit installed on the dust collector, the dust removal control unit having a dust removal control module electrically connected to the main control module, and a third touch screen and at least one fan electrically connected to the dust removal control module.

4. The monitoring and operation control system for the resin sand equipment according to claim 3, characterized in that, The dust removal control unit also has an electrically controlled gas pulse valve that is electrically connected to the dust removal control module.

5. The monitoring and operation control system for the resin sand equipment according to claim 4, characterized in that, The dust removal control unit also has a differential pressure sensor that is electrically connected to the dust removal control module.

6. The monitoring and operation control system for the resin sand equipment according to claim 3, characterized in that, The main control unit also has a main audible and visual alarm that is electrically connected to the main control module. The sand mixing control unit also has a first audible and visual alarm that is electrically connected to the sand mixing control module. The regeneration control unit also has a second audible and visual alarm that is electrically connected to the regeneration control module. The dust removal control unit also includes a third audible and visual alarm that is electrically connected to the dust removal control module.

7. The monitoring and operation control system for the resin sand equipment according to claim 3, characterized in that, The main control module is the main PLC module, the sand mixing control module is the sand mixing PLC module, the regeneration control module is the regeneration PLC module, and the dust removal control module is the dust removal PLC module.

8. The monitoring and operation control system for the resin sand equipment according to claim 3, characterized in that, The main control unit also has a main contactor that is electrically connected to the main control module and connected in series in the main control unit power circuit; the sand mixing control unit also has a first contactor that is electrically connected to the sand mixing control module and connected in series in the sand mixer power circuit; the regeneration control unit also has a second contactor that is electrically connected to the regeneration control module and connected in series in the resin sand regeneration machine power circuit; and the dust removal control unit also includes a third contactor that is electrically connected to the dust removal control module and connected in series in the dust collector power circuit.

9. The monitoring and operating control system of a resin sand plant according to claim 2, characterized in that The sand mixing control unit also has a first sand temperature regulation module and a first temperature sensor electrically connected to the sand mixing control module, and the regeneration control unit also has a second sand temperature regulation module and a second temperature sensor electrically connected to the regeneration control module.

10. A monitoring and operating control system for a resin sand plant as set forth in any one of claims 1-9, characterized in that, The central control unit also includes a display screen that is electrically connected to the central control module.

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