Purging device and photoelectric detection system
By designing a purge device for photoelectric switches, the gas source and solenoid valves can be used to clean the surface of the photoelectric switch, which solves the problem that the photoelectric switch cannot work properly due to dust and powder adhesion, improves production efficiency and saves resources .
Patent Information
- Application Number
- CN202420788776.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-16
- Publication Date
- 2025-02-11
- Estimated Expiration
- 2034-04-16
AI Technical Summary
In some harsh environments, dust and powder are attached to the surface of the photoelectric switch, affecting the emission and reception of light, causing the photoelectric switch to fail to work normally and reduce production efficiency.
Design a purge device, including a gas source, a purge pipeline and a solenoid valve, and controls the purge pipeline conduction through the solenoid valve, and the gas in the gas source enters the purge pipeline, and the photoelectric switch to be cleaned at the outlet end of the purge pipeline. The area is purged to ensure the cleanliness of the photoelectric switch.
Through the use of the purge device, dust and powder in the air are avoided from adhering to the surface of the photoelectric switch, so that the photoelectric switch can work normally, improve production efficiency, and save resources by controlling the purge time and avoid waste.
Smart Images
Figure CN222447533U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of automatic control, in particular to a purge device and a photoelectric detection system. Background Art
[0002] Photoelectric switches are used in many occasions. In some occasions, the on-site environment is harsh, and there is a lot of dust and powder in the air. These impurities adhere to the surface of the photoelectric switch, directly affecting the emission and reception of light. The photoelectric switch cannot work normally, reducing production efficiency. Utility Model Content
[0003] In view of the above problems, the present application is proposed to provide a purging device and a photoelectric detection system that overcome the above problems or at least partially solve the above problems.
[0004] In a first aspect, a purge device is provided, which is applied to a photoelectric switch, wherein the photoelectric switch has a set area to be cleaned;
[0005] The purge device includes: an air source, a purge pipeline, and a solenoid valve;
[0006] The inlet end of the purge pipeline is connected to the gas source, and the outlet end of the purge pipeline faces the area to be cleaned;
[0007] The solenoid valve is arranged on the purge pipeline.
[0008] Optionally, a power supply is also included, and the power supply includes a live wire terminal and a neutral wire terminal, wherein the live wire terminal is electrically connected to the positive pole of the solenoid valve, and the neutral wire terminal is electrically connected to the negative pole of the solenoid valve.
[0009] Optionally, it also includes a time relay, which includes a coil and a delayed closing contact, the positive pole of the coil is electrically connected to the live wire terminal, and the negative pole of the coil is electrically connected to the neutral wire terminal; the delayed closing contact is arranged between the live wire terminal and the solenoid valve, and the live wire terminal is specifically electrically connected to the positive pole of the delayed closing contact, and the positive pole of the solenoid valve is specifically electrically connected to the negative pole of the delayed closing contact.
[0010] Optionally, a conversion switch is also included, which includes a moving contact, a first static contact, and a second static contact; the moving contact is electrically connected to the live wire terminal, the first static contact is electrically connected to the time relay, and the second static contact is electrically connected to the positive pole of the solenoid valve.
[0011] Optionally, it also includes an indicator light, the positive pole of the indicator light is electrically connected to the negative pole of the delayed closing contact and the second static contact, and the negative pole of the indicator light is electrically connected to the positive pole of the solenoid valve.
[0012] Optionally, a circuit breaker is also included, which includes a power input line and a power output line, wherein the positive pole of the power input line is electrically connected to the live wire terminal, the negative pole of the power input line is electrically connected to the conversion switch, the positive pole of the power output line is electrically connected to the negative pole of the coil and the negative pole of the solenoid valve respectively, and the negative pole of the power output line is electrically connected to the neutral wire terminal.
[0013] Optionally, the photoelectric switch is an infrared photoelectric switch.
[0014] Optionally, the pressure of the gas source is 0.5-1 MPa.
[0015] Optionally, the outlet end of the purge pipe is arranged at the upper end of the surface of the area to be cleaned.
[0016] In a second aspect, a photoelectric detection system is provided, comprising a photoelectric switch and the purging device of the first aspect.
[0017] The technical solution provided by this application has at least the following technical effects or advantages:
[0018] The purge device and photoelectric detection system provided by the present application control the conduction of the purge pipeline through the solenoid valve, and the gas in the gas source enters the purge pipeline. The outlet end of the purge pipeline purges the area to be cleaned of the photoelectric switch to ensure the cleanliness of the photoelectric switch and prevent dust and powder in the air from adhering to the surface of the photoelectric switch, so that the photoelectric switch cannot work normally and reduce production efficiency. On the other hand, the purge device and photoelectric detection system provided by the present application can reasonably control the use of the purge gas source by controlling the purge time, saving resources and avoiding waste.
[0019] The above description is only an overview of the technical solution of the present application. In order to more clearly understand the technical means of the present application, it can be implemented in accordance with the contents of the specification. In order to make the above and other purposes, features and advantages of the present application more obvious and easy to understand, the specific implementation methods of the present application are listed below. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Various other advantages and benefits will become apparent to those of ordinary skill in the art by reading the detailed description of the preferred embodiments below. The accompanying drawings are only for the purpose of illustrating the preferred embodiments and are not to be considered as limiting the present application. Also, the same reference symbols are used throughout the accompanying drawings to represent the same components. In the accompanying drawings:
[0021] Figure 1 This is a structural diagram of the purge device in the embodiment of the present application;
[0022] Figure 2 Schematic diagram of the photoelectric detection system in the embodiment of the present application. DETAILED DESCRIPTION
[0023] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings.
[0024] Various structural schematic diagrams according to embodiments of the present application are shown in the accompanying drawings. These figures are not drawn to scale, and some details are magnified and some details may be omitted for the purpose of clear expression. The shapes of various regions and layers shown in the figures and the relative sizes and positional relationships therebetween are only exemplary, and may deviate in practice due to manufacturing tolerances or technical limitations, and those skilled in the art may further design regions / layers with different shapes, sizes, and relative positions according to actual needs.
[0025] In order to better understand the above-mentioned technical scheme, the above-mentioned technical scheme will be described in detail below in combination with specific implementation methods. It should be understood that the embodiments of the present disclosure and the specific features in the embodiments are detailed descriptions of the technical scheme of the present application, rather than limitations on the technical scheme of the present application. In the absence of conflict, the embodiments of the present application and the technical features in the embodiments can be combined with each other.
[0026] Photoelectric switches are used in many occasions. In some occasions, the on-site environment is harsh, and there is a lot of dust and powder in the air. These impurities adhere to the surface of the photoelectric switch, directly affecting the emission and reception of light. The photoelectric switch cannot work normally and cannot meet the automatic control of the production line.
[0027] Taking the infrared photoelectric switch as an example, its working principle is as follows: the photoelectric switch is mainly composed of a light emitter and a receiver. The light emitter can emit infrared light, and the receiver cannot detect the light without obstruction. However, when the object to be detected passes in front of the photoelectric switch, the light is blocked and the photoelectric switch receiver receives the light after returning, and outputs a switch control signal, which can be used in the production line automation control system. When dust and powder in the air adhere to the surface of the photoelectric switch to a certain thickness, it blocks the emission and reception of infrared light, making the infrared photoelectric switch unable to work normally and reducing production efficiency.
[0028] In view of this, the present application provides a purging device, which is applied to a photoelectric switch, and the photoelectric switch has a set area to be cleaned. Figure 1 , Figure 1 This is a structural diagram of a purge device in an embodiment of the present application, and the purge device includes: an air source 101, a purge pipeline 102, and a solenoid valve 103;
[0029] like Figure 1 As shown, the inlet end of the purge pipe 102 is connected to the gas source 101 , and the outlet end of the purge pipe 102 faces the area to be cleaned. The solenoid valve 103 is arranged in the purge pipe 102 .
[0030] When the surface of the photoelectric switch 100 is covered with dust and powder, the solenoid valve 103 controls the purge pipe 102 to be turned on, and the gas in the gas source 101 enters the purge pipe 102 and blows from the outlet end of the purge pipe 102 to the area to be cleaned of the photoelectric switch 100, thereby ensuring the cleanliness of the photoelectric switch 100 and preventing dust and powder in the air from adhering to the surface of the photoelectric switch 100, so that the photoelectric switch 100 cannot work normally and reduce production efficiency.
[0031] In some optional embodiments, the purging device further includes a power supply 104, which is electrically connected to the solenoid valve 103. The power supply 104 supplies power to the solenoid valve 103. When the solenoid head of the solenoid valve 103 is powered on, it is attracted to open the purging pipe 102. When the solenoid head of the solenoid valve 103 is powered off, it is separated to disconnect the purging pipe 102. Specifically, the power supply 104 can adopt a 220V AC power supply. Figure 1 As shown, the power supply 104 includes a live terminal 1041 and a neutral terminal 1042 , wherein the live terminal 1041 is electrically connected to the positive pole of the solenoid valve 103 , and the neutral terminal 1042 is electrically connected to the negative pole of the solenoid valve 103 .
[0032] In some optional embodiments, Figure 1 As shown, the purging device further includes a time relay 105, which includes a coil 1051 and a delayed closing contact 1052. The positive pole of the coil 1051 is electrically connected to the live terminal 1041, and the negative pole of the coil 1051 is electrically connected to the neutral terminal 1042. The delayed closing contact 1052 is arranged between the live terminal 1041 and the solenoid valve 103, and the live terminal 1041 is specifically electrically connected to the positive pole of the delayed closing contact 1052, and the positive pole of the solenoid valve 103 is specifically electrically connected to the negative pole of the delayed closing contact 1052.
[0033] It can be understood that in this embodiment, the delayed closing contact 1052 is arranged on the circuit in which the positive pole of the solenoid valve 103 is electrically connected to the live wire terminal 1041. When the delayed closing contact 1052 is closed, the circuit between the solenoid valve 103 and the live wire terminal 1041 is connected, and the solenoid valve 103 is electrically closed to open the purge pipe for purge.
[0034] The time relay 105 is a power-on delayed closing time relay, which starts timing immediately after power is turned on. After the timing is completed, the coil 1051 is energized to close the delayed closing contact 1052 to conduct the circuit, so that the solenoid valve 103 is energized.
[0035] The working principle of the purging device is: the operator sets the connection time t1 and the holding time t2 of the time relay 105, and each time group can be set in the range of 0-99 hours. After the setting is successful, the time relay 105 starts timing, and when t1 is reached, the circuit is connected, the solenoid valve 103 is closed, and the purging starts. The purging ends after the t2 time, and re-enters the next purging cycle.
[0036] In some optional embodiments, Figure 1 As shown, the purging device also includes a conversion switch 106, which includes a moving contact, a first static contact, and a second static contact; the moving contact is electrically connected to the live wire terminal 1041, the first static contact is electrically connected to the time relay, specifically, respectively electrically connected to the positive pole of the coil 1051 and the positive pole of the delayed closing contact 1052, and the second static contact is electrically connected to the positive pole of the solenoid valve 103.
[0037] It can be understood that the conversion switch 106 and the time relay are sequentially arranged between the live terminal 1041 and the solenoid valve 103. The conversion switch 106 outputs two lines through the first static contact and the second static contact respectively, which are connected to the positive pole of the solenoid valve 103. When the moving contact is turned to contact with the first static contact, the timed purge is realized through the time relay 105. When the moving contact of the conversion switch 106 is turned to contact with the second static contact, the solenoid valve 103 is continuously attracted and purged. Timed purge or continuous purge can be selected according to the on-site situation. The two purge methods are substitutes for each other. When one of the lines is damaged and the power is cut off, the purge can be carried out through the other line to avoid affecting the on-site production efficiency.
[0038] In some optional embodiments, the purging device further includes an indicator light 107 , the positive pole of the indicator light 107 is electrically connected to the negative pole of the delayed closing contact 1052 and the second static contact, respectively, and the negative pole of the indicator light 107 is electrically connected to the positive pole of the solenoid valve 103 .
[0039] It is understandable that the indicator light 107 is disposed between the conversion switch 106 and the electromagnetic valve 103. When the indicator light 107 is on, it indicates that the electromagnetic valve 103 is powered on and the purge is in progress, and when the indicator light 107 is off, it indicates that the electromagnetic valve 103 is powered off and the purge is not in progress.
[0040] In some optional embodiments, the purging device further includes a circuit breaker 108, and the circuit breaker 108 includes a power supply line and a power supply line, wherein the positive pole of the power supply line is electrically connected to the live terminal 1041, and the negative pole of the power supply line is electrically connected to the conversion switch 106, specifically to the moving contact of the conversion switch 106, that is, the power supply line is specifically arranged between the live terminal 1041 and the conversion switch 106, and controls the conduction and disconnection of the conversion switch 106. The positive pole of the power supply line is electrically connected to the negative pole of the coil 1051 and the negative pole of the solenoid valve 103, respectively, and the negative pole of the power supply line is electrically connected to the neutral terminal.
[0041] The circuit breaker 108 is disposed between the power source and the transfer switch 106. The circuit breaker 108 is used to control the power supply of the entire device. The circuit breaker 108 has a rated current value. When the current exceeds the rated current value, the circuit is disconnected to ensure the safety of the device.
[0042] In some optional implementations, the photoelectric switch 100 is an infrared photoelectric switch.
[0043] In some optional embodiments, the pressure of the gas source 101 is 0.5-1 MPa.
[0044] In some optional embodiments, the outlet end of the purge pipe 102 is disposed at the upper surface of the area to be cleaned, so as not to affect the signal transmission and reception of the photoelectric switch 100 and ensure the cleaning efficiency.
[0045] Based on the same inventive concept, the present application also provides a photoelectric detection system, such as Figure 2 The photoelectric detection system 200 shown includes a photoelectric switch 201 and a purge device 202. The purge device 202 can be the purge device of the above embodiment.
[0046] Combine the following Figure 1 The example introduces the application of the purge device 100 in the photoelectric detection system 200 according to the embodiment of the present application.
[0047] First, install the equipment: install the instrument box, purge pipe 102, solenoid valve 103, time relay 105, circuit breaker 108, transfer switch 106, indicator light 107 equipment and wiring, etc. The time relay 105, solenoid valve 103, circuit breaker 108 are installed inside the instrument box, and the transfer switch 106 and indicator light 107 are installed on the door of the instrument box.
[0048] Then investigate the use of the on-site photoelectric switch 105: According to the use environment of the photoelectric switch 201, explore the purge cycle of the purge device.
[0049] Then set the parameters: according to the predetermined purge cycle, set the parameters of the time relay 105, and test whether the time relay 105 works normally.
[0050] Finally, the actual application test: the device is actually put into use in production, the application situation is tested, and the parameters of the time relay 105 are adjusted according to the actual purging effect on site to ensure that the purging achieves the best effect, achieves the technical goal, and ensures that the signal of the photoelectric switch 201 is normal.
[0051] The photoelectric detection system provided in the embodiment of the present application controls the conduction of the purge pipe through an electromagnetic valve, and the gas in the gas source enters the purge pipe. The outlet end of the purge pipe purges the area to be cleaned of the photoelectric switch to ensure the cleanliness of the photoelectric switch and prevent dust and powder in the air from adhering to the surface of the photoelectric switch, which would prevent the photoelectric switch from working normally and reduce production efficiency.
[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.
[0053] In the description provided herein, a large number of specific details are described. However, it is understood that the embodiments of the present application can be practiced without these specific details. In some instances, well-known methods, structures and techniques are not shown in detail so as not to obscure the understanding of this description.
Claims
1. A purge device, characterized in that: Applied to a photoelectric switch, the photoelectric switch has a set area to be cleaned; The purge device comprises: an air source, a purge pipeline, and a solenoid valve; The inlet end of the purge pipeline is connected to the gas source, and the outlet end of the purge pipeline is directly facing the area to be cleaned; The solenoid valve is arranged on the purge pipeline.
2. The purging device according to claim 1, characterized in that: It also includes a power supply, which includes a live terminal and a neutral terminal, wherein the live terminal is electrically connected to the positive pole of the solenoid valve, and the neutral terminal is electrically connected to the negative pole of the solenoid valve.
3. The purging device according to claim 2, characterized in that: It also includes a time relay, which includes a coil and a delayed closing contact. The positive pole of the coil is electrically connected to the live wire terminal, and the negative pole of the coil is electrically connected to the neutral wire terminal; the delayed closing contact is arranged between the live wire terminal and the solenoid valve, and the live wire terminal is specifically electrically connected to the positive pole of the delayed closing contact, and the positive pole of the solenoid valve is specifically electrically connected to the negative pole of the delayed closing contact.
4. The purging device according to claim 3, characterized in that: It also includes a conversion switch, which includes a moving contact, a first static contact, and a second static contact; the moving contact is electrically connected to the live wire terminal, the first static contact is electrically connected to the time relay, and the second static contact is electrically connected to the positive pole of the solenoid valve.
5. The purging device according to claim 4, characterized in that: It also includes an indicator light, the positive pole of the indicator light is electrically connected to the negative pole of the delayed closing contact and the second static contact, and the negative pole of the indicator light is electrically connected to the positive pole of the solenoid valve.
6. The purging device according to claim 4, characterized in that: It also includes a circuit breaker, which includes a power input line and a power output line, wherein the positive pole of the power input line is electrically connected to the live wire terminal, the negative pole of the power input line is electrically connected to the conversion switch, the positive pole of the power output line is electrically connected to the negative pole of the coil and the negative pole of the solenoid valve respectively, and the negative pole of the power output line is electrically connected to the neutral wire terminal.
7. The purging device according to claim 1, characterized in that: The photoelectric switch is an infrared photoelectric switch.
8. The purging device according to claim 1, characterized in that: The pressure of the gas source is 0.5-1 MPa.
9. The purging device according to claim 1, characterized in that: The outlet end of the purge pipe is arranged on the upper surface of the area to be cleaned.
10. A photoelectric detection system, characterized in that: It comprises a photoelectric switch and the purging device according to any one of claims 1 to 9.