Relay protection reset device and air compressor for tobacco processing equipment

Abstract

The present disclosure relates to a relay protection reset device and an air compressor of tobacco processing equipment, wherein the relay protection reset device comprises a protection plate (5) arranged in front of a contactor (9) and configured to isolate an arc generated when the contactor (9) is working, a reset key (7) of the contactor (9) is pressed in a normal working state and pops up in a power-off protection state; and a reset rod (1) passing through the protection plate (5), in a normal working state, the inner end of the reset rod (1) is away from the reset key (7); in a power-off protection state, the reset rod (1) is configured to receive an external force through the outer end to move relative to the protection plate (5) so as to press the reset key (7) through the inner end. The device can quickly reset the alarm of the contactor due to overload protection action without removing the protection plate, thereby improving production efficiency and reducing maintenance workload.

Description

Technical Field

[0001] The present disclosure relates to the technical field of tobacco industry, and in particular to a relay protection resetting device and an air compressor of tobacco processing equipment. Background Art

[0002] Because the air compressor power distribution system is located inside the machine body, the vibration of the unit during operation is transmitted to the power distribution part through the main body. The power distribution part includes a contactor, which is used to load and unload the air compressor. It is a high-current contactor. During the operation of the air compressor, in order to prevent the electrical energy shock of arcing of the contactor contacts generated during the loading and unloading process, an insulating protection plate can be installed in front of the contactor.

[0003] By installing an insulating protection plate, the air compressor's ability to resist breakdown voltage is improved, and the arc effect generated during operation can be effectively isolated. Due to the vibration of the air compressor body during operation, the insulating protection plate needs to be fixed to the air compressor through multiple screws.

[0004] When the air compressor performs overload protection during loading and unloading, the coil will be triggered to cut off the power supply. At this time, the contactor reset button pops out, and you need to manually press the contactor reset button to restore the normal operation of the air compressor power distribution system.

[0005] The insulation protection plate needs to be removed for resetting. The process of removing the insulation protection plate is rather cumbersome. To ensure safety during the operation, the main power supply of the air compressor needs to be disconnected, and the screws on the insulation protection plate need to be removed to remove the insulation protection plate for resetting. The cumbersome process affects the equipment recovery time and the operating efficiency of the equipment, and there are also certain safety hazards. Summary of the invention

[0006] The purpose of the present disclosure is to provide a relay protection resetting device and an air compressor for tobacco processing equipment, which can improve the convenience of relay resetting.

[0007] To achieve the above objectives, the present disclosure provides a first aspect of a relay protection reset device, comprising:

[0008] A protection plate, provided in front of the contactor, configured to isolate the arc generated when the contactor is working, wherein the reset button of the contactor is pressed in the normal working state and pops up in the power-off protection state; and

[0009] The reset rod passes through the protection plate. Under normal working conditions, the inner end of the reset rod leaves the reset button. Under power-off protection conditions, the reset rod is configured to receive external force through the outer end to move relative to the protection plate so as to press the reset button through the inner end.

[0010] In some embodiments, under normal working conditions, the inner end of the reset rod is higher than the top of the reset button after it pops up.

[0011] In some embodiments, the reset button is arranged opposite to the protection plate, and the reset rod moves along its own axis to press the reset button.

[0012] In some embodiments, the reset device further includes a guide member, a first through hole is provided on the protection plate, the guide member is disposed in the first through hole, a second through hole is provided on the guide member, and the reset rod is passed through the second through hole.

[0013] In some embodiments, a thrust portion is provided on the guide member, and the thrust portion abuts against the outer side surface of the protection plate.

[0014] In some embodiments, the reset device further includes a reset element, which is disposed between the reset rod and the protection plate and is configured to restore the reset rod to an initial position after the external force on the reset rod is released.

[0015] In some embodiments, the reset button is arranged opposite to the protection plate, and the reset rod moves along its own axis to press the reset button;

[0016] The relay protection reset device also includes a limiter, and the reset element includes a spring. The spring is sleeved on the outer end of the reset rod, one end of the spring abuts against the protection plate, and the other end abuts against the limiter.

[0017] In some embodiments, the installation position of the stopper relative to the reset rod is adjustable along the axial direction.

[0018] In some embodiments, the limiting member includes a nut, the outer end of the reset rod is a threaded section, and the nut is screwed onto the threaded section to limit the spring.

[0019] In some embodiments, a limiting portion is provided on the reset rod at a position inside the protection plate, which is used to limit the extreme position of the reset rod moving outward.

[0020] In some embodiments, the reset device further includes a position maintaining component configured to restrict movement of the reset rod in the locked state and to allow movement of the reset rod in the unlocked state.

[0021] To achieve the above-mentioned purpose, the second aspect of the present disclosure provides an air compressor for tobacco processing equipment, comprising the relay protection resetting device of the above-mentioned embodiment.

[0022] Based on the above technical solution, the relay protection reset device disclosed in the present invention is provided with a reset rod passing through the protection plate. In the normal working state, the inner end of the reset rod is away from the reset button; in the power-off protection state, the reset rod is configured to receive external force through the outer end to move relative to the protection plate, so as to press the reset button through the inner end. This relay protection reset device can quickly reset the alarm caused by the overload protection action of the contactor without removing the protection plate, which can improve production efficiency and reduce maintenance workload. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0024] Figure 1 It is a structural schematic diagram of an embodiment of the relay protection reset device disclosed in the present invention;

[0025] Figure 2 The figure is a schematic structural diagram of an embodiment of a reset rod in a relay protection reset device disclosed in the present invention.

[0026] Description of Reference Numerals

[0027] 1. Reset rod; 2. Limiting member; 3. Gasket; 4. Reset element; 5. Protection plate; 6. Guide member; 61. Thrust member; 62. Main body; 7. Reset button; 8. Contactor protector; 9. Contactor; 10. Machine body; 11. Threaded section; 12. Screw; 13. Nut. DETAILED DESCRIPTION

[0028] The present disclosure is described in detail below. In the following paragraphs, different aspects of the embodiments are defined in more detail. Each aspect so defined can be combined with any other aspect or aspects, unless explicitly stated not to be combined. In particular, any feature that is considered to be preferred or advantageous can be combined with one or more other features that are considered to be preferred or advantageous.

[0029] In the description of the present disclosure, it should be understood that the terms "inside", "outside", "up", "down", "left" and "right" etc. indicating orientations or positional relationships are based on the orientations or positional relationships shown in the accompanying drawings and are only for the convenience of describing the present disclosure. They do not indicate or imply that the device referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they should not be understood as limiting the scope of protection of the present disclosure.

[0030] like Figure 1 As shown, the present disclosure provides a relay protection reset device. In some embodiments, the reset device includes a protection plate 5 and a reset rod 1.

[0031] Taking the air compressor as an example, the power distribution part in the air compressor includes a contactor 9, which is used to load and unload the air compressor. It is a high-current contactor. During the operation of the air compressor, in order to prevent the electric energy impact of arcing of the contactor 9 contacts generated during the loading and unloading process, a protective plate 5 is provided in front of the contactor 9. The protective plate 5 is configured to isolate the arc generated when the contactor 9 is working, and can be an insulating protective plate. The front of the contactor 9 is the side away from the installation end of the contactor 9. By installing the protective plate 5, the air compressor's ability to resist breakdown voltage is improved, and the arc effect generated during operation can be effectively isolated.

[0032] Due to the vibration of the air compressor body during operation, the protective plate 5 can be fixed to the body 10 of the air compressor by a plurality of screws 12. For example, four screws 12 are provided for fixed installation. The first end of the screw 12 can be screwed into the mounting hole of the body 10 and fixed by a nut 13. The second end passes through the protective plate 5 and is locked and fixed by nuts 13 on both sides of the protective plate 5.

[0033] A contactor protector 8 is provided on one side of the contactor 9 to provide overload protection during the air compressor loading and unloading process. During overload protection, the coil is triggered to cut off the power supply, thereby cutting off the power supply. The reset button 7 of the contactor 9 is pressed in the normal working state and pops up in the power-off protection state. If you want to continue working, you need to press the reset button 7 again.

[0034] The reset rod 1 passes through the protection plate 5. In the normal working state, the inner end of the reset rod 1 is away from the reset button 7. In the power-off protection state, the reset rod 1 is configured to receive external force through the outer end to move relative to the protection plate 5, so as to press the reset button 7 through the inner end. The reset rod 1 can be made of insulating material, and needs to meet the pressing strength requirements and the working environment requirements.

[0035] The relay protection reset device of this embodiment of the present disclosure can quickly reset the alarm caused by the overload protection action of the contactor, without removing the protection plate and disconnecting the main power supply of the air compressor, which can simplify the operation process, reduce the maintenance workload, and improve the operation safety. By adopting this reset device, when the contactor is reset, the time required to restore the equipment can be shortened, and the impact of the contactor power failure protection on the operating efficiency of the air compressor can be reduced, thereby improving the tobacco production efficiency.

[0036] This reset device can be operated manually, for example, by manually applying a pressing force to the outer end of the reset rod 1 to make it move. Alternatively, it can be reset automatically. The reset device includes a control component and a drive mechanism, the drive mechanism is connected to the outer end of the reset rod 1, and the control component is configured to activate the drive mechanism to press the reset rod 1 to make it move when receiving a signal that the contactor 9 is disconnected and the reset button 7 pops up.

[0037] In some embodiments, under normal working conditions, the inner end of the reset rod 1 is higher than the top of the reset button 7 after it pops up. This arrangement enables the reset button 7 to pop up smoothly when the air compressor performs overload protection during the loading and unloading process, thereby ensuring the safety of the air compressor.

[0038] In some embodiments, the reset rod 1 passes through the protection plate 5, the reset button 7 of the contactor 9 is located on the side, and a guide groove may be provided on the protection plate 5. The reset rod 1 may move along the guide groove in a direction perpendicular to its own axis to press the reset button 7 through the side of the inner end of the reset rod 1, or a bending portion may be provided at the inner end of the reset rod 1, and the reset button 7 may be pressed through the end surface of the bending portion. This embodiment can reduce the operating space required along the axial direction of the reset rod 1 outside the protection plate 5.

[0039] In some embodiments, the reset button 7 is located above the contactor protector 8 and is arranged opposite to the protection plate 5, and the reset rod 1 moves along its own axial direction to press the reset button 7. This embodiment has a simple structure, can reduce the operating space required around the reset rod 1, and is convenient for applying external force to press the reset button 7. Subsequent embodiments are all given based on this structure.

[0040] like Figure 1 As shown, the reset device of the present disclosure further includes a guide member 6, a first through hole is provided on the protection plate 5, the guide member 6 is provided in the first through hole, a second through hole is provided on the guide member 6, and the reset rod 1 is passed through the second through hole. For example, the guide member 6 can be a cylindrical sleeve structure, and the reset rod 1 can be a cylindrical slender rod structure. The guide member 6 can be made of a material with a small friction coefficient, such as polytetrafluoroethylene.

[0041] By providing the guide member 6, the reset rod 1 can move under the guidance of the second through hole, thereby improving the movement stability and preventing the reset rod 1 from getting stuck due to shaking and swinging during the movement, so that the inner end of the reset rod 1 can be aligned with the reset button 7 and pressed.

[0042] Specifically, the guide member 6 includes a main body 62 and a thrust portion 61, forming a stepped cylindrical structure, and the thrust portion 61 abuts against the outer surface of the protection plate 5. The guide member 6 is installed from the outside of the protection plate 5, and the thrust portion 61 can be provided to enable the guide member 6 to be reliably installed on the protection plate 5.

[0043] In some embodiments, the reset device of the present disclosure further includes a reset element 4, which is disposed between the reset rod 1 and the protection plate 5 and is configured to restore the reset rod 1 to its initial position after the external force on the reset rod 1 is released. After the reset button 7 is pressed by the reset rod 1, the external force on the reset rod 1 is released, and the reset rod 1 can be automatically restored to its initial position by the reset element 4 without the need for human assistance, so that the reset button 7 can be pressed again by applying external force after the overload protection occurs next time.

[0044] refer to Figure 1 The reset button 7 is arranged opposite to the protection plate 5, and the reset rod 1 moves along its own axial direction to press the reset button 7. The reset device also includes a limiter 2, and the reset element 4 includes a spring, such as a compression spring, which is sleeved on the outer end of the reset rod 1, one end of the spring abuts on the protection plate 5, and the other end abuts on the limiter 2.

[0045] By using a spring sleeved on the outer end of the reset rod 1, the direction of its elastic restoring force is exactly consistent with the axial direction of the reset rod 1, so that the reset rod 1 can be smoothly restored to the initial position. By setting the limiter 2, the spring can be limited within a certain length space to ensure the elastic restoring force generated by the spring, so that the reset rod 1 can reliably rebound to the initial position after the reset button 7 is pressed, and when the reset rod 1 is pressed, it also has a certain hand feel, which is convenient for operation, and can also provide a buffer force for pressing the reset button 7 to prevent damage to the reset button 7.

[0046] Furthermore, the installation position of the stopper 2 relative to the reset rod 1 can be adjusted axially. By adjusting the position of the stopper 2, the resistance when the reset rod 1 is pressed and the rebound force of the spring on the reset rod 1 can be adjusted, so as to be suitable for reset keys 7 requiring different pressing forces.

[0047] Combination Figure 1 and Figure 2 The limiting member 2 includes a nut, and the outer end of the reset rod 1 is a threaded section 11. The nut is screwed on the threaded section 11 to limit the spring. The nut can be used to reliably limit the spring, and the preload force of the spring can be easily adjusted by screwing the nut. The outer end of the reset rod 1 exceeds the outer end of the nut by a preset distance to leave enough adjustment space. When the distance between the protection plate 5 and the reset button 7 is different, or the pressing force required for the reset button 7 is different, it can be adjusted to improve the versatility of the reset device.

[0048] Furthermore, in order to improve the force stability of the spring, a gasket can be arranged between the nut and a section of the spring, and the other end of the spring can be against the thrust portion 61 of the guide 6 to increase the support area of ​​the spring. The nut is required to be locked firmly without loosening, with appropriate tightening torque, and the gasket can protect the spring and the nut and disperse the pressure between the nut and the spring.

[0049] In some embodiments, not shown in the figure, a limit portion is provided on the reset rod 1 at the inner side of the protection plate 5 to limit the limit position of the reset rod 1 to move outward. When the reset rod 1 is moved outward, the limit portion is blocked by the guide member 6 to prevent it from falling out, so that the reset device is kept on the protection plate 5 and can be used at any time when power failure protection occurs.

[0050] In the embodiment without the limiter, after the reset button 7 is pressed, the reset rod 1 can be pulled out and stored for next use. This method can prevent the reset rod 1 from being malfunctioned by external force and affecting the state of the reset button 7 when the contactor 9 is in normal working state, thereby improving the reliability of the normal working state.

[0051] In some embodiments, the reset device of the present disclosure further includes a position holding component configured to limit the movement of the reset rod 1 in a locked state and allow the reset rod 1 to move in an unlocked state. After the contactor 9 is powered off and the reset key 7 is pressed by the reset rod 1, the position holding component is switched to the locked state. After the contactor 9 is powered off, the position holding component is unlocked to allow the reset rod 1 to move and press the reset key 7.

[0052] This embodiment can release the locking state of the reset rod 1 only after the power-off protection, so as to realize the reset function of the reset button 7; and when the contactor 9 is in normal working state, it can prevent the reset rod 1 from being malfunctioned by external force and affecting the state of the reset button 7, thereby improving the reliability of the equipment operation.

[0053] Below Figure 1 Take the example to illustrate the operation method of the reset device of the present invention: manually apply force to the reset rod 1, and transmit the external force axially along the reset rod 1 to the reset button 7 of the contactor 9 by overcoming the spring resistance, so as to complete the reset of the overload protection action of the relay.

[0054] After the reset is completed, the reset rod 1 automatically extends outward to the initial position under the preload force of the spring. At this time, the reset device is in a cold standby state. The spring is required to be sensitive and have appropriate preload force to meet the size and actual force requirements of the reset rod 1. This reset device has the characteristics of simple structure, good contact and aging resistance.

[0055] Secondly, the present disclosure also provides an air compressor for tobacco processing equipment, including the relay protection resetting device of the above embodiment.

[0056] Through experiments, if 10 air compressors are set, if the reset button 7 is reset by removing the protection plate 5, the reset time takes 30 minutes, which affects the production efficiency and increases the maintenance workload. After adopting the reset device disclosed in the present invention, when power failure protection occurs, it is not necessary to disconnect the power supply and remove the insulation protection plate, and the reset of the relay protection device can be completed in 1 minute, which greatly reduces the maintenance workload, can improve the production efficiency of tobacco, and make the entire production process more continuous.

[0057] The above is a detailed introduction to a relay protection reset device and an air compressor for tobacco processing equipment provided by the present disclosure. Specific embodiments are used in this article to illustrate the principles and implementation methods of the present disclosure. The description of the above embodiments is only used to help understand the method and core ideas of the present disclosure. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present disclosure, several improvements and modifications can be made to the present disclosure, and these improvements and modifications also fall within the scope of protection of the claims of the present disclosure.

Claims

1. An air compressor for tobacco processing equipment, characterized in that: It comprises a contactor (9) and a relay protection reset device, wherein the contactor (9) is used to load and unload the air compressor, and the relay protection reset device comprises: A protection plate (5) is arranged in front of the contactor (9) and is configured to isolate an arc generated when the contactor (9) is in operation, wherein a reset button (7) of the contactor (9) is pressed in a normal working state and pops up in a power-off protection state; and a reset rod (1) passes through the protection plate (5), wherein in the normal working state, the inner end of the reset rod (1) is away from the reset button (7); in the power-off protection state, the reset rod (1) is configured to receive an external force through the outer end to move relative to the protection plate (5) so as to press the reset button (7) through the inner end; a reset element (4), disposed between the reset rod (1) and the protection plate (5), and configured to restore the reset rod (1) to an initial position after an external force on the reset rod (1) is released, the reset element (4) comprising a spring; and A limiting member (2), wherein the spring is sleeved on the outer end of the reset rod (1), one end of the spring abuts against the protection plate (5), and the other end abuts against the limiting member (2), and the installation position of the limiting member (2) relative to the reset rod (1) can be adjusted axially; the limiting member (2) comprises a nut, the outer end of the reset rod (1) is a threaded section (11), and the nut is screwed onto the threaded section (11) to limit the spring.

2. The air compressor of tobacco processing equipment according to claim 1, characterized in that: In the normal working state, the inner end of the reset rod (1) is higher than the top of the reset button (7) after it pops up.

3. The air compressor of tobacco processing equipment according to claim 1, characterized in that: The reset button (7) is arranged opposite to the protection plate (5), and the reset rod (1) moves along its own axial direction to press the reset button (7).

4. The air compressor for tobacco processing equipment according to claim 3, characterized in that: The relay protection reset device further comprises a guide member (6), the protection plate (5) is provided with a first through hole, the guide member (6) is arranged in the first through hole, the guide member (6) is provided with a second through hole, and the reset rod (1) is inserted into the second through hole.

5. The air compressor for tobacco processing equipment according to claim 4, characterized in that: The guide member (6) is provided with a thrust portion (61), and the thrust portion (61) abuts against the outer surface of the protection plate (5).

6. The air compressor for tobacco processing equipment according to claim 1, characterized in that: A limiting portion is provided on the reset rod (1) at a position located inside the protection plate (5), which is used to limit the extreme position of the outward movement of the reset rod (1).

7. The air compressor for tobacco processing equipment according to claim 1, characterized in that: The relay protection reset device also includes a position holding component configured to limit the movement of the reset rod (1) in a locked state and to allow the reset rod (1) to move in an unlocked state.

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