A dual temperature detection control system for valve heating applications

Abstract

The utility model relates to point to a kind of valve heating application field, provide a kind of double temperature detection control system of valve heating application, including point to glue valve, heating bucket and first double temperature control module, the heating bucket is used to place glue, and the glue in bucket is heated, the heating bucket is transported glue by pipeline to the point to glue valve, first double temperature control module includes first main temperature controller, first vice temperature controller and first over-temperature cut-off module, the signal acquisition end of first main temperature controller is connected with the first main temperature sensor in the heating bucket, output end is connected with the first heating device in the heating bucket, the signal acquisition end of first vice temperature controller is connected with the first vice temperature sensor in the heating bucket, output end connects the controlled end of first over-temperature cut-off module, first over-temperature cut-off module switch end is set at the main output end of first main temperature control module;The utility model has over-temperature protection, strong stability, high security.

Description

Technical Field

[0001] This utility model relates to the field of heating applications for dispensing valves, and more specifically, to a dual-temperature detection and control system for valve heating applications. Background Technology

[0002] Dispensing valves are the core component of industrial dispensing applications, with valve heating being an indispensable part. Given the diversity of industrial products, the varied properties of adhesives, the wide range of customer needs, and the safety requirements of dispensing applications, accurately detecting and controlling the valve heating temperature has become a crucial challenge for engineers. A dispensing valve typically consists of a glue tank, a valve body, and a valve nozzle. Traditional methods of heating dispensing valves generally only involve using the glue tank as a heating element. For example, Chinese utility model patent application number CN202223279657.5 uses a single heating system to control the heating wire within the heating element to heat the adhesive. This lack of over-temperature protection and poor system stability result in problems with the single-temperature system. Utility Model Content

[0003] The problem this invention addresses is how to provide a dual-temperature detection and control system with over-temperature protection, high stability, and enhanced safety.

[0004] To address the aforementioned problems, this utility model provides a dual-temperature detection and control system for valve heating applications, comprising: a dispensing valve, a heating tank, and a first dual-temperature control module. The heating tank is used to hold adhesive and heat the adhesive inside the tank. The heating tank delivers adhesive to the dispensing valve through a pipeline. The first dual-temperature control module includes a first main temperature controller, a first auxiliary temperature controller, and a first over-temperature cutoff module. The signal acquisition terminal of the first main temperature controller is connected to a first main temperature sensor inside the heating tank, and its output terminal is connected to a first heating device inside the heating tank to control the heating state inside the heating tank. The signal acquisition terminal of the first auxiliary temperature controller is connected to a first auxiliary temperature sensor inside the heating tank, and its output terminal is connected to the controlled terminal of the first over-temperature cutoff module. The switch terminal of the first over-temperature cutoff module is located at the main output terminal of the first main temperature control module, and is used to cut off the heating output of the first main temperature control module to the first heating device according to the control signal of the first auxiliary temperature controller.

[0005] Furthermore, it also includes a heating block and a second dual-temperature control module. The heating block is disposed at the nozzle of the dispensing valve. The second dual-temperature control module includes a second main temperature controller, a second auxiliary temperature controller, and a second over-temperature cutoff module. The signal acquisition end of the second main temperature controller is connected to the second main temperature sensor inside the heating block, and the output end is connected to the second heating device inside the heating block. The signal acquisition end of the second auxiliary temperature controller is connected to the second auxiliary temperature sensor inside the heating block, and the output end is connected to the controlled end of the second over-temperature cutoff module. The switch end of the second over-temperature cutoff module is disposed at the main output end of the second main temperature control module.

[0006] Furthermore, the first over-temperature cutoff module uses a first relay, the output terminal of the first auxiliary temperature controller is connected to the coil of the first relay, the first power output terminal of the first main temperature controller is connected to the first terminal of the first heating device, and the second power output terminal is connected to the second terminal of the first heating device via the normally open contact of the first relay. When the temperature is over-temperature, the first auxiliary temperature controller controls the first relay to open, thereby cutting off the heating output of the first main temperature control module to the first heating device.

[0007] Furthermore, the communication terminal of the first auxiliary temperature controller is connected to the host computer.

[0008] Compared with the prior art, the beneficial effects of this utility model are: The temperature control system uses two temperature controllers, a main one and a secondary one. The main temperature controller collects the temperature and controls the heating, while the secondary temperature controller and temperature sensor detect over-temperature of the heating system. Together, they form a detection system to achieve protection. The heating output is cut off when the temperature exceeds the limit. Even if a single temperature sensor fails, over-temperature will not occur. At the same time, the two sets of dual-temperature modules control the temperature inside the barrel and at the nozzle respectively, resulting in high system stability and strong safety. Attached Figure Description

[0009] Figure 1 This is a hardware framework diagram of a dual-temperature detection and control system for valve heating application in an embodiment of this utility model; Figure 2 This is a functional block diagram of a dual-temperature detection and control system for valve heating application in an embodiment of this utility model; Figure 3 This is a schematic diagram of the circuit connection of the dual-temperature detection and control system for valve heating application in an embodiment of this utility model. Detailed Implementation

[0010] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings.

[0011] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" 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 mechanical 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.

[0012] In the description of this specification, references to terms such as "embodiment," "one embodiment," and "one implementation" indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or implementation is included in at least one embodiment or illustrative embodiment of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or implementation. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or implementations.

[0013] like Figure 1-3 As shown, this utility model provides a dual-temperature detection and control system for valve heating applications. The system hardware components include: two sets of main and auxiliary temperature controllers, a dispensing valve, a heating tank, and a heating block. The main system framework is as follows: The main temperature controller is primarily responsible for precise heating control of the heating block and heating tank, and also serves as the first temperature detection unit.

[0014] The secondary temperature controller is mainly responsible for the second temperature detection and can control power outages to achieve over-temperature protection.

[0015] The heating block is mainly responsible for heating the nozzle of the valve body to prevent the glue from solidifying and clogging the valve body.

[0016] A heating bucket is used to hold and heat the glue.

[0017] The heating tank delivers adhesive to the dispensing valve through a pipe. The heating wire can be coiled at the bottom or on the wall of the heating tank. Two thermocouples extend into the heating tank for temperature detection. The heating block is located at the nozzle of the dispensing valve. The heating block has a built-in heating device and two thermocouples, is fixed at the bottom of the valve body, and is fitted over the nozzle to heat it. The temperature controller can use existing temperature control instruments, of which there are many models to choose from. For example, the main temperature controller can be XH-W3002, which has RTD / couple temperature signal acquisition and direct power output, and can directly control the heating device. The auxiliary temperature controller can be CH402, CD901, etc., which has switching voltage output, controls relays, and supports RS485 communication, and can be connected to a host industrial control computer.

[0018] Temperature protection operations of a control system can be divided into offline manual operation and online automatic operation: When the equipment is in the offline manual operation process, the heating temperature, temperature threshold and alarm output can be manually set on the main and auxiliary temperature controllers to test the feasibility and stability of the entire system. When the dispensing system and this design are installed on automated equipment, temperature commands can be sent to the host computer via communication with the secondary temperature controller for real-time adjustment, or the real-time temperature value can be read and monitored on the host computer.

[0019] like Figure 3 As shown, the secondary temperature controller uses relays (KA1, KA2) to cut off the heating output for protection. The output terminal of the secondary temperature controller is connected to the coil of the first relay. The normally open contacts of the relays are set in the heating circuit between the main temperature control module and the heating wire to achieve over-temperature power-off protection.

[0020] In summary, this utility model can control and monitor the temperature of the valve body and the adhesive. Compared with traditional glue warming machines without a temperature control system, it reduces the operations of disassembly, warming, and applying glue, greatly improving work efficiency. At the same time, compared with traditional glue warming machines with a single heating system, dual temperature control detection can greatly improve the stability and safety of the control system.

[0021] Although the disclosure is as stated above, the scope of protection of this disclosure is not limited thereto. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of this disclosure, and all such changes and modifications will fall within the protection scope of this utility model.

Claims

1. A dual-temperature detection and control system for valve heating applications, characterized in that, include: The system includes a dispensing valve, a heating tank, and a first dual-temperature control module. The heating tank holds and heats the adhesive. Adhesive is supplied to the dispensing valve via a pipe. The first dual-temperature control module comprises a first main temperature controller, a first auxiliary temperature controller, and a first over-temperature cutoff module. The signal acquisition terminal of the first main temperature controller is connected to a first main temperature sensor inside the heating tank, and its output terminal is connected to a first heating device inside the heating tank to control the heating state within the tank. The signal acquisition terminal of the first auxiliary temperature controller is connected to a first auxiliary temperature sensor inside the heating tank, and its output terminal is connected to the controlled terminal of the first over-temperature cutoff module. The switch terminal of the first over-temperature cutoff module is located at the main output terminal of the first main temperature controller and is used to cut off the heating output from the first main temperature controller to the first heating device based on the control signal from the first auxiliary temperature controller.

2. The dual-temperature detection and control system for valve heating applications according to claim 1, characterized in that, It also includes a heating block and a second dual-temperature control module. The heating block is located at the nozzle of the dispensing valve. The second dual-temperature control module includes a second main temperature controller, a second auxiliary temperature controller, and a second over-temperature cutoff module. The signal acquisition terminal of the second main temperature controller is connected to the second main temperature sensor inside the heating block, and its output terminal is connected to the second heating device inside the heating block. The signal acquisition terminal of the second auxiliary temperature controller is connected to the second auxiliary temperature sensor inside the heating block, and its output terminal is connected to the controlled terminal of the second over-temperature cutoff module. The switch terminal of the second over-temperature cutoff module is located at the main output terminal of the second main temperature controller.

3. The dual-temperature detection and control system for valve heating applications according to claim 1, characterized in that, The first over-temperature cutoff module uses a first relay. The output terminal of the first auxiliary temperature controller is connected to the coil of the first relay. The first power output terminal of the first main temperature controller is connected to the first terminal of the first heating device. The second power output terminal is connected to the second terminal of the first heating device via the normally open contact of the first relay. When the temperature is over-temperature, the first auxiliary temperature controller controls the first relay to open, thereby cutting off the heating output of the first main temperature controller to the first heating device.

4. The dual-temperature detection and control system for valve heating applications according to claim 1, characterized in that, The communication terminal of the first auxiliary temperature controller is connected to the host computer.

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