Dual display dry run protector

Abstract

This utility model discloses a dual-display dry-run protector, including a protector body. The actuator end of the protector body is connected to a connector body via a wire. The outer end of the connector body is inserted into the interface position of the stator body. Adjusting the settings of the setting components allows for precise adjustment of the working accuracy of the protector body. A heat dissipation mesh plate is installed on the back of the protector body. A cleaning mechanism is provided inside the heat dissipation mesh plate. The outer side of the cleaning mechanism acts on the gaps in the heat dissipation mesh plate to clean the dust inside the heat dissipation mesh plate. This dual-display dry-run protector, through its dual-screen design, allows for intuitive separation of real-time temperature monitoring and protection value setting through a real-time display screen and a setting display screen. Combined with operation buttons, parameters can be precisely adjusted. The built-in cleaning mechanism automatically cleans dust from the heat dissipation mesh plate, ensuring heat dissipation efficiency. The overall optimized structure reduces costs, balances ease of installation and operational stability, and extends the service life of the equipment.

Description

Technical Field

[0001] This utility model relates to the technical field of protectors, specifically a dual-display dry operation protector. Background Technology

[0002] The dry operation protection controller monitors the stator temperature in real time. When the pump is in dry operation and the stator temperature rises too quickly and exceeds the set temperature, the protector outputs a switching signal to stop the pump through a relay, thereby extending the pump's service life and reducing the occurrence of accidents.

[0003] When an existing pump stops due to overheating, it can resume normal operation after the stator temperature drops below the set value and is manually or automatically reset. To address this issue, a smart constant pressure variable frequency water pump controller disclosed in existing technology (Chinese patent application number CN202322836705.4, applicant date 2023-10-23) can be referenced. This protector, through the cooperation of the controller body, square plate, square block, horizontal plate, handle, bolt, straight plate, observation window, vertical block, vertical cylinder, and protective structure, allows the device to be used by rotating the housing, which covers the display screen of the controller body. Simultaneously, the housing drives the horizontal block to rotate, causing the straight block to insert into the groove of the horizontal block. Rotating the lead screw causes the insertion rod to move downward, inserting it into the inner wall of the horizontal and straight blocks, thereby fixing the housing, preventing the display screen from being exposed to the outside, avoiding accidental touches, and ensuring normal operation.

[0004] While the aforementioned technologies can conveniently ensure the normal operation of the pump after reset, other problems still exist in actual use. Some existing protectors have complex structures and numerous components, which not only increases manufacturing costs but also significantly increases the difficulty of installation and maintenance. For example, some built-in protectors require the disassembly of a large number of equipment parts during installation, which is time-consuming and labor-intensive. Later maintenance is also difficult due to the complex internal structure and troubleshooting, seriously affecting the normal uptime of the equipment. Under some complex operating conditions, sensors are susceptible to interference, leading to inaccurate detection results and frequent misjudgments, such as misreporting normal operation as dry operation or failing to detect dry operation in time.

[0005] Therefore, we proposed a dual-display dry-run protector that can effectively solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to provide a dual-display dry operation protector to solve the problems mentioned in the background art. Some existing protectors on the market have complex structures and numerous parts, which not only increase the manufacturing cost but also significantly increase the difficulty of installation and maintenance. For example, some built-in protectors require the disassembly of a large number of equipment parts during installation, which is time-consuming and labor-intensive. Later maintenance is also difficult due to the complex internal structure and troubleshooting, which seriously affects the normal operation time of the equipment. Under some complex working conditions, the sensors are easily interfered with, resulting in inaccurate detection results and frequent misjudgments, such as misreporting normal operation as dry operation or failing to detect dry operation in time.

[0007] To achieve the above objectives, this utility model provides the following technical solution: a dual-display dry-run protector, comprising a protector body, the actuator end of which is connected to a connector body via a wire, the outer end of which is inserted into the interface position of the stator body, the working end of which is fixed to one side of the drive assembly, and the stator body is mounted on the top of the guide rail; an adjustment setting component is provided inside the protector body, including a real-time display screen and a setting display screen, the setting of which can precisely adjust the working accuracy of the protector body; a heat dissipation mesh plate is installed on the back of the protector body, and a cleaning mechanism is provided inside the heat dissipation mesh plate, the outer side of which acts on the gaps in the heat dissipation mesh plate to clean the dust inside the heat dissipation mesh plate.

[0008] As a preferred technical solution of this application, a thermoelectric sensor is also installed inside the connector body, and one of the three thermoelectric sensors, PT100, PT1000, and NTC, can be selected.

[0009] As a preferred technical solution of this application, the adjustment setting component includes a real-time display screen and a setting display screen mounted on the surface of the protector body, and the protector body is provided with an increase key, a decrease key and a move key at a position below the setting display screen, and a setting key is also installed on one side of the move key.

[0010] As a preferred technical solution of this application, the real-time display screen is used to display the temperature of the stator body in real time, the setting display screen is used to set the protection temperature value of the stator body, the increase key and decrease key are used to set the increase and decrease of the value in the display screen parameters, the movement key is used to set the displacement of the reference number, and the setting key enters the setting interface.

[0011] As a preferred technical solution of this application, the cleaning mechanism includes a fixed motor installed inside the protector body. The output end of the fixed motor is fixed to the end of the reciprocating lead screw. The outer side of the reciprocating lead screw is threaded to the inner side of the movable sleeve. One side of the cleaning strip is fixed to the outer side of the movable sleeve. The upper and lower ends of the cleaning strip are slidably disposed inside the fixed guide frame. The fixed guide frame is fixed inside the protector body parallel to the inner edge of the heat dissipation mesh plate. A guide member is provided on the outer side of the upper end of the cleaning strip, and the guiding movement of the guide member realizes the gas emission treatment.

[0012] As a preferred technical solution of this application, the guide includes a receiving tube fixed to one side of the cleaning strip, and the interior of the receiving tube is fitted against the outer wall of the fixed piston rod. The other end of the fixed piston rod is fixed to the inner wall of the protector body. The end of the receiving tube away from the air supply pipe is connected to the air outlet of the cleaning strip through the air supply pipe.

[0013] As a preferred technical solution of this application, the outer side of the jet nozzle corresponds to one side of the heat dissipation mesh plate, and a one-way inlet valve and a one-way outlet valve 3002 are provided on one side of the inside of the receiving tube.

[0014] Compared with existing technologies, the beneficial effects of this utility model are as follows: This dual-display dry-run protector, through its dual-screen design, achieves intuitive separation of real-time temperature monitoring and protection value setting via a real-time display screen and a setting display screen. Combined with operation buttons, parameters can be precisely adjusted, improving control accuracy. The guide rail mounting structure simplifies installation and disassembly. It offers three optional thermoelectric sensors, including PT100, to adapt to complex operating conditions and reduce misjudgments. A built-in cleaning mechanism automatically cleans dust from the heat dissipation plate, ensuring heat dissipation efficiency. The overall optimized structure reduces costs, balances ease of installation and operational stability, and extends the equipment's service life. The internal details are as follows:

[0015] 1. The dual-display design, along with operation buttons such as the increase and decrease buttons, allows parameter setting and real-time monitoring to be carried out simultaneously. This enables intuitive comparison without switching interfaces, improving operational efficiency.

[0016] 2. The connector body is compatible with three types of thermoelectric sensors: PT100, PT1000, and NTC. It can be flexibly selected according to different working conditions, enhancing adaptability. The rail mounting makes the assembly of the stator body and the drive assembly more convenient, reduces installation time, lowers maintenance difficulty, and saves labor costs.

[0017] 3. The passive relay provides stable switching output, and the switching point can be set arbitrarily between zero and full scale to meet diverse protection needs; the dual 4-digit digital tube displays a wide range, accurately presenting temperature data, reducing detection errors, and effectively avoiding false alarms or missed alarms.

[0018] 4. The heat dissipation mesh plate, together with the cleaning mechanism, uses a reciprocating screw to drive the cleaning strip to slide and spray air to remove dust, thus preventing dust blockage from affecting heat dissipation and ensuring the continuous and stable operation of the equipment. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0020] Figure 2 This utility model Figure 1 Enlarged structural diagram at point A in the middle;

[0021] Figure 3 This is a schematic diagram of the main structure of the protector body of this utility model;

[0022] Figure 4 This is a schematic diagram of the back structure of the protector body of this utility model;

[0023] Figure 5 This is a schematic diagram of the main structure of the heat dissipation mesh plate of this utility model;

[0024] Figure 6 This is a schematic diagram of the rear view of the cleaning strip of this utility model;

[0025] Figure 7 This is a schematic diagram of the main cross-sectional structure of the receiving tube of this utility model.

[0026] In the diagram: 1. Protector body; 101. Real-time display screen; 102. Setting display screen; 103. Increase key; 104. Decrease key; 105. Move key; 106. Set key; 2. Connector body; 3. Stator body; 4. Drive assembly; 5. Guide rail; 6. Heat dissipation plate; 7. Fixed motor; 8. Reciprocating lead screw; 9. Moving sleeve; 10. Cleaning strip; 11. Fixed guide frame; 12. Receiving tube; 1201. Air supply pipe; 13. Fixed piston rod; 14. Air jet nozzle. Detailed Implementation

[0027] 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.

[0028] Please see Figures 1-7 This utility model provides the following technical solution: a dual-display dry operation protector.

[0029] Example 1: To address the issue that some existing protectors on the market have complex structures and numerous components, which not only increase manufacturing costs but also significantly increase the difficulty of installation and maintenance—for example, some built-in protectors require the disassembly of many equipment parts during installation, which is time-consuming and labor-intensive. Furthermore, the complex internal structure makes troubleshooting difficult, severely impacting the equipment's uptime. In some complex operating conditions, sensors are susceptible to interference, leading to inaccurate detection results and frequent misjudgments, such as misreporting normal operation as dry operation or failing to detect dry operation in a timely manner. Please refer to the appendix for further details. Figure 1 -Appendix Figure 3The device includes a protector body 1, whose actuator end is connected to a connector body 2 via a guide. The outer end of the connector body 2 is inserted into the interface position of the stator body 3. The actuator end of the stator body 3 is fixed to one side of the drive assembly 4. The stator body 3 is also mounted on the top of the guide rail 5. An adjustment setting assembly is provided inside the protector body 1. The adjustment setting assembly includes a real-time display screen 101 and a setting display screen 102. The setting of the adjustment setting assembly can precisely adjust the working accuracy of the protector body 1. A thermoelectric sensor is also installed inside the connector body 2. One of the three thermoelectric sensors, PT100, PT1000, and NTC, can be selected. The adjustment and setting components include a real-time display screen 101 and a setting display screen 102 mounted on the surface of the protector body 1. Near the lower part of the setting display screen 102, the protector body 1 has an increase key 103, a decrease key 104, and a movement key 105. A setting key 106 is also mounted to one side of the movement key 105. The real-time display screen 101 displays the temperature of the stator body 3 in real time. The setting display screen 102 is used to set the protection temperature value of the stator body 3. The increase key 103 and decrease key 104 are used to increase or decrease the value of the parameter on the display screen 102. The movement key 105 sets the displacement of the reference value. The setting key 106 enters the setting interface. In actual installation of this dual-display dry-run protector, first, the stator body 3 is fixed to one side of the drive assembly 4. Then, the outer end of the connector body 2 is inserted into the interface of the stator body 3. The protector body 1 is connected to the connector body 2 via a wire. Finally, the stator body 3 is snapped onto the top of the guide rail 5, completing the overall assembly without disassembly. The equipment components are easy to install. During use, the thermoelectric sensor installed in the connector body 2 can select from PT100, PT1000, and NTC to detect the temperature of the stator body 3 in real time. The real-time display screen 101 of the protector body 1 displays the detected temperature data synchronously. If the operator needs to set the protection temperature, press and hold the setting key 106 to enter the setting interface. The setting display screen 102 will light up. Use the movement key 105 to adjust the number of digits of the parameter, and use the increase key 103 and decrease key 104 to modify the value. After completion, press the setting key 106 to save and exit. The technical parameters of the protector body 1 are as follows: power supply range: AC220V or DC24V; temperature range: -30-150℃; sensor type: PT100 / NTC10K / PT1000; ambient temperature: -25~80℃; storage temperature: -40~100℃; display method: dual-digit 4-digit digital tube; display range: -1999~9999; contact type: relay.

[0030] Example 2: To ensure the efficient operation of the protector body 1, please refer to the attached document. Figure 4 -Appendix Figure 6The cleaning mechanism includes a fixed motor 7 installed inside the protector body 1. The output end of the fixed motor 7 is fixed to the end of the reciprocating lead screw 8. The outer side of the reciprocating lead screw 8 is threaded to the inner side of the movable sleeve 9. One side of the cleaning strip 10 is fixed to the outer side of the movable sleeve 9. The upper and lower ends of the cleaning strip 10 are slidably disposed inside the fixed guide frame 11. The fixed guide frame 11 is parallel to the inner edge of the heat dissipation mesh plate 6 and fixed inside the protector body 1. A guide member is provided on the outer side of the upper end of the cleaning strip 10, and the guide member guides... The movement enables gas emission treatment; the guide includes a receiving tube 12 fixed to one side of the cleaning strip 10, and the inside of the receiving tube 12 is fitted against the outer wall of the fixed piston rod 13. The other end of the fixed piston rod 13 is fixed to the inner wall of the protector body 1. The end of the receiving tube 12 away from the gas supply pipe 1201 is connected to the air jet port 14 of the cleaning strip 10 through the gas supply pipe 1201. The outer side of the air jet port 14 corresponds to one side of the heat dissipation mesh plate 6. A one-way air inlet valve and a one-way air outlet valve are provided on one side of the inside of the receiving tube 12.

[0031] When the heat dissipation mesh plate 6 needs to be cleaned, the fixed motor 7 installed inside the protector body 1 starts, and its output end drives the reciprocating screw 8 to rotate. Since the reciprocating screw 8 is threadedly connected to the moving sleeve 9, the rotating reciprocating screw 8 causes the moving sleeve 9 to reciprocate along the screw axis, thereby driving the cleaning strip 10, which is fixedly connected to the moving sleeve 9, to move synchronously. At this time, the upper and lower ends of the cleaning strip 10 slide in the fixed guide frame 11. The fixed guide frame 11 is fixed parallel to the inner edge of the heat dissipation mesh plate 6, providing stable guidance for the cleaning strip 10 and ensuring that its outer side can accurately act on the gap of the heat dissipation mesh plate 6 to clean the dust. During the reciprocating movement of the cleaning strip 10, the guide component on its upper outer side operates synchronously. In the guide component, the receiving tube 12 fixed on one side of the cleaning strip 10 moves with the cleaning strip 10. Since the inside of the receiving tube 12 is in contact with the outer wall of the fixed piston rod 13 fixed to the inner wall of the protector body 1, the receiving tube 12 will move along the fixed piston rod 13. The one-way inlet valve and one-way outlet valve inside the receiving tube 12 work together during this process. When the receiving tube 12 extends, the one-way inlet valve opens to draw in air; when it retracts, the one-way outlet valve opens, and the air is delivered to the air jet 14 of the cleaning strip 10 through the air supply pipe 1201. The outer side of the air jet 14 corresponds to the side of the heat dissipation mesh plate 6, and the sprayed gas can further blow away the dust in the gaps of the heat dissipation mesh plate 6, enhancing the cleaning effect. Through the combination of mechanical cleaning and gas blowing, the cleaning mechanism can effectively clean the dust inside the heat dissipation mesh plate 6, ensuring the heat dissipation efficiency of the heat dissipation mesh plate 6.

[0032] The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A dual-display dry running protector, comprising a protector body (1), wherein the actuating end of the protector body (1) is connected to the connector body (2) via a wire, the outer end of the connector body (2) is inserted into the interface position of the stator body (3), the actuating end of the stator body (3) is fixed on one side of the drive assembly (4), and the stator body (3) is mounted on the top position of the guide rail (5). Its features are: The protector body (1) is equipped with an adjustment setting component, which includes a real-time display screen (101) and a setting display screen (102). The setting of the adjustment setting component can accurately adjust the working accuracy of the protector body (1). A heat dissipation mesh plate (6) is installed on the back of the protector body (1). A cleaning mechanism is provided inside the heat dissipation mesh plate (6). The outer side of the cleaning mechanism acts on the gap of the heat dissipation mesh plate (6) to clean the dust inside the heat dissipation mesh plate (6).

2. The dual-display dry-run protector according to claim 1, characterized in that: Thermoelectric sensors are also installed inside the connector body (2), and one of the three thermoelectric sensors, PT100, PT1000, and NTC, can be selected at will.

3. The dual-display dry operation protector according to claim 1, characterized in that: The adjustment setting component includes a real-time display screen (101) and a setting display screen (102) mounted on the surface of the protector body (1). The protector body (1) is provided with an increase key (103), a decrease key (104) and a move key (105) near the lower position of the setting display screen (102). A setting key (106) is also installed on one side of the move key (105).

4. The dual-display dry operation protector according to claim 3, characterized in that: The real-time display screen (101) is used to display the temperature of the stator body (3) in real time. The setting display screen (102) is used to set the protection temperature value of the stator body (3). The increase key (103) and decrease key (104) are used to set the increase and decrease of the value of the parameter in the display screen (102). The move key (105) sets the displacement of the reference number. The setting key (106) enters the setting interface.

5. The dual-display dry-run protector according to claim 1, characterized in that: The cleaning mechanism includes a fixed motor (7) installed inside the protector body (1). The output end of the fixed motor (7) is fixed to the end of the reciprocating screw (8). The outer side of the reciprocating screw (8) is threaded to the inner side of the movable sleeve (9). The outer side of the movable sleeve (9) is fixed to one side of the cleaning strip (10). The upper and lower ends of the cleaning strip (10) are slidably disposed inside the fixed guide frame (11). The fixed guide frame (11) is parallel to the inner edge of the heat dissipation mesh plate (6) and fixed inside the protector body (1). A guide is provided on the outer side of the upper end of the cleaning strip (10), and the guiding movement of the guide realizes the gas emission treatment.

6. The dual-display dry operation protector according to claim 5, characterized in that: The guide includes a receiving tube (12) fixed to one side of the cleaning strip (10), and the inside of the receiving tube (12) is fitted against the outer wall of the fixed piston rod (13). The other end of the fixed piston rod (13) is fixed to the inner wall of the protector body (1). The end of the receiving tube (12) away from the air supply pipe (1201) is connected to the air outlet (14) of the cleaning strip (10) through the air supply pipe (1201).

7. The dual-display dry-run protector according to claim 6, characterized in that: The outer side of the jet nozzle (14) corresponds to one side of the heat dissipation mesh plate (6), and a one-way air inlet valve and a one-way air outlet valve are provided on one side inside the receiving tube (12).

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