PLC remote control device

Abstract

The utility model discloses a PLC remote control device, which relates to the technical field of PLC control and specifically comprises a device body, a cabinet door is arranged on the front side of the device body, a dehumidification assembly is arranged on the inner side of the cabinet door, a heat exchange box is arranged at the bottom end of an inner cavity of the cabinet door, and the side wall of the device body is of a hollow structure. An inner cavity of the side wall of the device body communicates with an inner cavity of the heat exchange box, an air blowing plate is arranged in the middle of the inner wall of the device body, and the air blowing plate and the cabinet door are arranged oppositely. According to the PLC remote control device, based on the indirect air cooling heat dissipation principle, the heat dissipation air channel is arranged on the side wall of the device body, cooling air moves in the heat dissipation air channel, and dust in the air is prevented from entering the device body in the heat dissipation process; therefore, components of the PLC remote control device installed in the device body can be prevented from being affected by dust, and use of the PLC remote control device is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of PLC control technology, specifically a PLC remote control device. Background Technology

[0002] As a crucial component of tunnel monitoring systems, tunnel PLC controllers play a key role in environmental monitoring and equipment management. To ensure stable system operation, PLC remote control devices are typically installed in tunnel monitoring equipment rooms or dedicated protection cabinets. However, during actual operation, PLC remote control devices generate heat. To address this issue, existing technologies usually employ air circulation cooling to dissipate heat from the inside of the PLC remote control device. However, fine impurities in the air can enter the device along with the air, contaminating internal components and affecting the reliability and lifespan of the PLC remote control device. Furthermore, during maintenance of the PLC remote control device, the device door is open, allowing impurities from the outside air to enter the device as well. Based on these considerations, this application proposes a PLC remote control device. Utility Model Content

[0003] This invention provides a PLC remote control device that solves the problem mentioned in the background art where impurities in the outside air can enter the device during heat dissipation and maintenance, affecting the device's operation.

[0004] This utility model provides the following technical solution: a PLC remote control device, including a device body, a cabinet door on the front side of the device body, a dehumidification component on the inner side of the cabinet door, a heat exchange box at the bottom of the inner cavity of the cabinet door, a hollow side wall of the device body, the inner cavity of the side wall of the device body communicating with the inner cavity of the heat exchange box, and a blower plate in the middle of the inner wall of the device body, the blower plate and the cabinet door being arranged opposite to each other.

[0005] Preferably, a groove is provided on one side of the device body, and a cooling component is provided in the inner cavity of the groove. The groove is sealed by an air filter plate. The cooling component includes a blower and a dust filter connected to the bottom of the inner cavity of the groove. The air outlet of the blower is connected to the inner cavity of the side wall of the device body through an air outlet pipe one. The air outlet of the blower is connected to the air inlet of the dust filter through an air outlet pipe two. The air outlet of the dust filter is connected to the inner cavity of the blower plate.

[0006] Preferably, both air outlet pipe one and air outlet pipe two are equipped with an electric ball valve at one end.

[0007] Preferably, the device body includes an outer shell and connecting plates. Both ends of the blower plate are provided with connecting plates, and the two connecting plates and the blower plate form the inner shell of the device body. A heat dissipation air duct is formed between the outer shell and the inner shell.

[0008] Preferably, an air inlet channel is provided at the bottom of the heat exchange box cavity, an exhaust channel is provided at the top of the heat exchange box cavity, and exhaust holes are provided at the top of the exhaust channel and on one side of the top of the inner cavity of the device body sidewall.

[0009] Preferably, a connecting block is fixedly connected to the bottom end of one side of the device body, one end of the connecting block is provided with a connecting hole, the inner cavity of the side wall of the device body is connected to the air inlet channel through the connecting hole, and the other end of the connecting block is movably connected to a rotating shaft, which is fixedly connected to the cabinet door.

[0010] Compared with the prior art, the present invention has the following beneficial effects:

[0011] 1. This PLC remote control device is based on the principle of indirect air cooling. By setting up a heat dissipation duct on the side wall of the device body, the cooling air moves within the heat dissipation duct, which prevents dust in the air from entering the device body during the heat dissipation process. This avoids the components of the PLC remote control device installed in the device body from being affected by dust, making the PLC remote control device easier to use. In addition, a heat exchange box is set on the inside of the cabinet door to increase the heat exchange area, thereby improving the heat exchange efficiency of the device and facilitating the PLC remote control of the equipment in the tunnel.

[0012] 2. The PLC remote control device, through the setting of the air blower, can blow the air out of the air blower towards the opening end of the device body, so that the air in the inner cavity of the device body is in a state of being discharged from the inside to the outside. This can prevent the outside air from entering the inside of the device body, and thus prevent the cabinet door from being in the open state, so that external impurities can enter the inner cavity of the device body, which is convenient for the installation of components inside the device body. Attached Figure Description

[0013] Figure 1 This is a front view of the structure of this utility model;

[0014] Figure 2 This is a schematic diagram of the back of the structure of this utility model;

[0015] Figure 3 The structure of this utility model Figure 2 Explosion diagram;

[0016] Figure 4 The structure of this utility model Figure 1 Cross-sectional diagram;

[0017] Figure 5This is a cross-sectional schematic diagram of the cabinet door structure of this utility model.

[0018] In the diagram: 1. Device body; 2. Cabinet door; 3. Exhaust vent; 4. Air blower plate; 5. Rotating shaft; 6. Heat exchange box; 7. Dehumidification assembly; 8. Air filter plate; 9. Blower; 10. Dust filter; 11. Air outlet duct one; 12. Air outlet duct two; 13. Heat dissipation duct; 14. Outer shell; 15. Connecting plate; 16. Air inlet channel; 17. Connecting block; 18. Exhaust channel; 19. Electric ball valve; 20. Connecting hole. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] This utility model provides an embodiment: Please refer to Figures 1-5 A PLC remote control device includes a device body 1, a cabinet door 2 on the front side of the device body 1, a connecting block 17 fixedly connected to the bottom of one side of the device body 1, a connecting hole 20 on one end of the connecting block 17, and a rotating shaft 5 movably connected to the other end of the connecting block 17. The rotating shaft 5 is fixedly connected to the cabinet door 2. Through the setting of the rotating shaft 5, the cabinet door 2 and the device body 1 are movably connected, which facilitates the opening and closing of the cabinet door 2.

[0021] A dehumidification component 7 is provided inside the cabinet door 2. When the cabinet door 2 is closed, the inner cavity of the PLC remote control device is sealed. The dehumidification component 7 is used to dehumidify the inner cavity of the PLC remote control device. The dehumidification component 7 can be a replaceable desiccant box as in the prior art. The desiccant box contains moisture-absorbing particles, such as water-absorbing resin. The moisture-absorbing particles can be set according to needs and are not limited here. A heat exchange box 6 is provided at the bottom of the inner cavity of the cabinet door 2. When the cabinet door 2 is closed, the heat exchange box 6 is located in the inner cavity of the device body 1, which increases the heat exchange area of ​​this application, thereby increasing the cooling speed of the inner cavity of the PLC remote control device and facilitating the use of the PLC remote control device.

[0022] An air inlet channel 16 is provided at the bottom of the inner cavity of the heat exchange box 6, and an exhaust channel 18 is provided at the top of the inner cavity of the heat exchange box 6. An exhaust hole 3 is provided at the top of the exhaust channel 18 and on one side of the top of the inner cavity of the device body 1. The gas in the exhaust channel 18 or the inner cavity of the side wall of the device body 1 can be discharged by means of the exhaust hole 3.

[0023] The sidewall of the device body 1 is a hollow structure, comprising an outer shell 14 and an inner shell. A heat dissipation duct 13 is formed between the outer shell 14 and the inner shell. One end of the connecting hole 20 communicates with the inner cavity of the heat dissipation duct 13, and the other end of the connecting hole 20 communicates with the air inlet end of the air inlet channel 16. Through the connecting hole 20, the cooled air in the inner cavity of the sidewall of the device body 1 can enter the inner cavity of the heat exchange box 6, and excess gas in the heat exchange box 6 can be discharged through the exhaust channel 18. The inner shell includes a blower plate 4, which is located in the middle of the inner wall of the device body 1. Connecting plates 15 are provided at both ends of the blower plate 4. The two connecting plates 15 and the blower plate 4 form the inner shell of the device body 1, and the blower plate 4 and the cabinet door 2 are arranged opposite each other. When this application is in use, the components of the PLC remote control device are installed inside the inner cavity of the device body 1. When the cabinet door 2 is open, the air blown out by the blower plate 4 can blow towards the opening end of the device body 1, so that the air inside the device body 1 is in a state of being discharged from the inside to the outside, thereby preventing outside air from entering the device body 1, and thus preventing external impurities from entering the inner cavity of the device body 1 when the cabinet door 2 is open, which facilitates the installation of components inside the device body 1.

[0024] A groove is provided on one side of the device body 1. A cooling component is provided in the inner cavity of the groove. The groove is sealed by an air filter plate 8. The air filter plate 8 can filter the air entering the groove and intercept large particulate impurities in the air. The cooling component includes a blower 9 and a dust filter 10 connected to the bottom of the inner cavity of the groove. The air outlet of the blower 9 is connected to the inner cavity of the side wall of the device body 1 through an air outlet pipe 11. The air outlet of the blower 9 is connected to the air inlet of the dust filter 10 through an air outlet pipe 12. The dust filter 10 can filter the air filtered by the air filter plate 8 again. The dust filter 10 can use an activated carbon filter element to filter the air again. The dust filter 10 is existing technology and will not be described in detail here. The air outlet of the dust filter 10 is connected to the inner cavity of the blower plate 4. An electric ball valve 19 is provided at one end of both the air outlet pipe 11 and the air outlet pipe 12.

[0025] By configuring the cooling components, the blower 9 can draw outside air into either the first air outlet 11 or the second air outlet 12. The air in the first air outlet 11 enters the heat dissipation duct 13, and then enters the heat exchange box 6 through the connection hole 20 and the air inlet channel 16. As the air moves within the heat dissipation duct 13 and the heat exchange box 6, it exchanges heat with the air inside the device body 1, thus cooling the device body 1. The heated air is then discharged through the exhaust hole 3. The air in the second air outlet 12 is filtered again by the dust filter 10 before entering the inner cavity of the blower plate 4. The air inside the blower plate 4 is sprayed into the inner cavity of the device body 1 through the air holes on it, and then discharged from the inner cavity of the device body 1 through its open end. This prevents outside air from entering the device body 1 when the cabinet door 2 is open, thus facilitating the operation of the components of the PLC remote control device installed on the device body 1.

[0026] In addition, an IP67-rated explosion-proof microswitch (such as the Schneider XV2 series) can be installed inside the door frame of cabinet door 2. When cabinet door 2 is closed, pressing the switch contacts opens the normally closed contacts. When the cabinet door is open, the normally closed contacts close. The controller of this device can determine the closed state of cabinet door 2 based on the IP67-rated explosion-proof microswitch. A temperature sensor (not shown in the figure) can be installed inside the device body 1. The controller inside this device controls the operation of blower 9 based on the temperature sensor's detection results. The model of the temperature sensor can be selected according to requirements and is not limited here.

[0027] All electrical components involved in this application are existing technologies. Those skilled in the art can select appropriate models according to their needs, and no restrictions are imposed here. Those skilled in the art understand their connection methods. With the help of those skilled in the art, all electrical components in this application and their compatible power supplies can be connected by wires. According to the actual situation, appropriate controllers can be selected to meet control requirements. For specific connections and control sequences, please refer to the following description. The electrical connections between the various electrical components are completed in the order of their operation. The detailed connection methods are well-known technologies in the art. The following mainly introduces the working principle and process, and will not describe the electrical control.

[0028] This application improves upon existing PLC remote control devices by modifying their air-cooling method. Based on the principle of indirect air cooling, a cooling duct 13 is installed on the side wall of the device body 1. This allows cooling air to move within the duct 13, preventing dust from entering the device body 1 during the cooling process. This avoids dust affecting the components of the PLC remote control device (such as the main control module, communication system, and power management system) installed inside the device body 1, thus facilitating the use of the PLC remote control device. Furthermore, this application includes a heat exchange box inside the cabinet door 2 to increase the heat exchange area and improve the heat dissipation efficiency.

[0029] This application provides a blower plate 4 on the inner wall of the device body 1. When the cabinet door 2 is open, the blower 9 blows air through the dust filter 10 into the inner cavity of the blower plate 4. The air blown out by the blower plate 4 can be directed towards the opening end of the device body 1, so that the air in the inner cavity of the device body 1 is in a state of being discharged from the inside to the outside. This prevents outside air from entering the inside of the device body 1, and thus prevents external impurities from entering the inner cavity of the device body 1 when the cabinet door 2 is open, which facilitates the installation of components inside the device body 1.

[0030] All standard parts used in this utility model can be purchased from the market, and irregularly shaped parts can be customized according to the description and drawings. The specific connection methods of each structure adopt conventional technical means such as bolt connection in the prior art. The machinery, parts and equipment involved in this application all adopt conventional models in the prior art, and will not be described in detail here. The contents not described in detail in this specification belong to the prior art known to those skilled in the art. Although the embodiments of this utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of this utility model. The scope of this utility model is defined by the appended claims and their equivalents.

Claims

1. A PLC remote control device, comprising a device body (1), characterized in that: The device body (1) is provided with a cabinet door (2) on the front side. A dehumidification component (7) is provided inside the cabinet door (2). A heat exchange box (6) is provided at the bottom of the inner cavity of the cabinet door (2). The side wall of the device body (1) is a hollow structure. The inner cavity of the side wall of the device body (1) is connected to the inner cavity of the heat exchange box (6). A blower plate (4) is provided in the middle of the inner wall of the device body (1). The blower plate (4) and the cabinet door (2) are arranged opposite to each other.

2. The PLC remote control device according to claim 1, characterized in that: A groove is provided on one side of the device body (1), and a cooling component is provided in the inner cavity of the groove. The groove is sealed by an air filter plate (8). The cooling component includes a blower (9) and a dust filter (10) connected to the bottom of the inner cavity of the groove. The air outlet of the blower (9) is connected to the inner cavity of the side wall of the device body (1) through an air outlet pipe (11). The air outlet of the blower (9) is connected to the air inlet of the dust filter (10) through an air outlet pipe (12). The air outlet of the dust filter (10) is connected to the inner cavity of the blower plate (4).

3. The PLC remote control device according to claim 2, characterized in that: Both the first air outlet pipe (11) and the second air outlet pipe (12) are equipped with an electric ball valve (19) at one end.

4. A PLC remote control device according to claim 1, characterized in that: The device body (1) includes an outer shell (14) and a connecting plate (15). Both ends of the blower plate (4) are provided with connecting plates (15). The two connecting plates (15) and the blower plate (4) form the inner shell of the device body (1). A heat dissipation channel (13) is formed between the outer shell (14) and the inner shell.

5. A PLC remote control device according to claim 1, characterized in that: An air inlet channel (16) is provided at the bottom of the inner cavity of the heat exchange box (6), and an exhaust channel (18) is provided at the top of the inner cavity of the heat exchange box (6). An exhaust hole (3) is provided at the top of the exhaust channel (18) and on one side of the top of the inner cavity of the side wall of the device body (1).

6. A PLC remote control device according to claim 5, characterized in that: A connecting block (17) is fixedly connected to the bottom of one side of the device body (1). One end of the connecting block (17) is provided with a connecting hole (20). The inner cavity of the side wall of the device body (1) is connected to the air inlet channel (16) through the connecting hole (20). The other end of the connecting block (17) is movably connected to a rotating shaft (5). The rotating shaft (5) is fixedly connected to the cabinet door (2).

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