Monitoring and protecting device of screw conveyor

Abstract

The utility model provides a monitoring and protecting device of a screw conveyor, which comprises a control system, a discharging machine shell, a discharging screw and a driving mechanism of the discharging screw, the discharging screw is arranged in the discharging machine shell, and the control system controls the driving mechanism to drive the discharging screw to rotate. The detection device comprises a detection part and a signal processing part, the detection part is close to the discharge screw, the detection device is connected with the control system, the detection part is used for detecting the rotating speed and vibration parameters of the discharge screw, and the signal processing part is used for receiving and processing signals transmitted by the detection part and outputting corresponding control signals to the control system. And the control system is used for automatically adjusting the working parameters of the discharging screw according to the detection result. Data support is provided for a control system, when the screw breaks down or is abnormal, control signals can be detected and output in time, an alarm prompt is given out, the working efficiency of the screw conveyor can be improved, and the service life of equipment can be prolonged.

Description

Technical Field

[0001] The utility model belongs to the technical field of conveying equipment, relates to the improvement of a screw conveyor, and specifically relates to a monitoring and protection device for a screw conveyor. Background Art

[0002] A screw conveyor is a conveying equipment that uses a motor to drive a screw to rotate and realizes the conveying purpose by pushing materials. It is widely used in various industrial production lines, and its main function is to convey materials from one place to another. However, during the actual operation process, due to factors such as the characteristics of the materials and the working state of the equipment, problems such as screw jamming and wear may occur, affecting the normal operation of the equipment and production efficiency.

[0003] For example: In the plastic processing industry, a screw conveyor is used in cooperation with a press to quickly convey the materials generated by the press stamping sheet materials to the recycling position. However, in actual applications, there are disadvantages. If the conveying screw of the screw conveyor fails to convey during operation, it will cause material accumulation and cause serious damage to the press.

[0004] Therefore, how to develop and design a monitoring and protection device for a screw conveyor that can monitor the working state of the screw in real time, provide data support for the control system, detect and output a control signal in time when the screw fails or is abnormal, and give an alarm prompt, can improve the working efficiency of the screw conveyor and extend the service life of the equipment, which is an urgent technical problem to be solved in this field. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a monitoring and protection device for a screw conveyor, which can provide data support for the control system, detect and output a control signal in time when the screw fails or is abnormal, give an alarm prompt, and can improve the working efficiency of the screw conveyor and extend the service life of the equipment.

[0006] To solve the above technical problems, the utility model is realized through the following technical solutions:

[0007] A monitoring and protection device for a screw conveyor, comprising a control system, a discharge casing, a bearing flange, a bearing in the middle of the bearing flange, a discharge screw and its driving mechanism. The bearing flange is arranged at one end of the discharge casing. The discharge screw is arranged in the discharge casing, and one end thereof is inserted into the bearing. The control system controls the driving mechanism to drive the discharge screw to rotate. It is characterized in that a detection device is arranged on the discharge casing. The detection device comprises a detection component and a signal processing component. The detection component is close to the discharge screw. The detection device is connected to the control system. The detection component is used for detecting the rotation speed and vibration parameters of the discharge screw. The signal processing component is used for receiving and processing the signals transmitted by the detection component and outputting corresponding control signals to the control system. The control system is used for automatically adjusting the working parameters of the discharge screw according to the detection results.

[0008] Improvement to the above technical solution: The detection device further comprises an alarm device. The alarm device is connected to the control system. The control system receives the abnormal working state signal of the discharge screw sent by the detection component and controls the alarm device to emit an alarm signal.

[0009] Further improvement to the above technical solution: The detection component comprises a proximity switch, a proximity switch fixing bracket and a proximity switch induction disc. The proximity switch fixing bracket is fixed at one end of the discharge casing. The proximity switch is installed on the proximity switch fixing bracket. The proximity switch induction disc is installed at one end of the discharge screw and is located below the proximity switch. The proximity switch induction disc is eccentrically arranged. When the farthest point from the rotation center on the proximity switch induction disc rotates to the highest position, it is closest to the lower end of the proximity switch.

[0010] Further improvement to the above technical solution: The proximity switch induction disc comprises a proximity switch induction disc I and a proximity switch induction disc II. The proximity switch induction disc I comprises a semi-circular fixing ring and a semi-circular induction disc. The proximity switch induction disc II comprises a semi-circular fixing ring. The semi-circular induction disc on the proximity switch induction disc I and the semi-circular induction disc on the proximity switch induction disc II are connected by bolts to form a circular ring and are fixed on the discharge screw. The semi-circular induction disc on the proximity switch induction disc I is used for inducing the lower end of the proximity switch when it rotates to the highest position.

[0011] Further improvement to the above technical solution: The proximity switch fixing bracket is in an n shape. There is an installation hole in the middle of the proximity switch fixing bracket. The proximity switch is vertically inserted into the installation hole. The upper end of the proximity switch is connected to the control system through a wire.

[0012] Further improvement to the above technical solution: The discharge machine housing is a U-shaped housing. A protective net is covered on a part of the open upper part of the U-shaped housing, and the proximity switch fixing bracket is installed at the open part without the protective net.

[0013] Further improvement to the above technical solution: The detection component adopts an infrared photoelectric sensor, a Hall sensor, an electromagnetic induction sensor or a vibration sensor.

[0014] Further improvement to the above technical solution: It further includes a far-infrared temperature sensor and a noise detector. The far-infrared temperature sensor and the noise detector are connected to the control system. The far-infrared temperature sensor and the noise detector are arranged on the discharge machine housing near the discharge screw. The far-infrared temperature sensor is used to detect whether the surface temperature of the discharge screw is normal, and the noise detector is used to detect the noise near the discharge screw.

[0015] The utility model has the following advantages and positive effects compared with the prior art:

[0016] The utility model installs a detection device for the operation of the screw at the end of the screw, which is used to monitor the operation state of the screw in real time and provide data support for the control system. When the screw fails or is abnormal, it can detect in time and output a control signal; in addition, it can also give an alarm prompt to prompt the operator to operate the equipment in a timely and reasonable manner to avoid losses. Description of the Drawings

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is the front view of the internal structure of a monitoring and protection device for a screw conveyor of the present utility model;

[0019] Figure 2 It is the side view of the internal structure of a monitoring and protection device for a screw conveyor of the present utility model;

[0020] Figure 3 It is the assembly disassembly diagram of a monitoring and protection device for a screw conveyor of the present utility model;

[0021] Figure 4 It is the enlarged three-dimensional view of the proximity switch induction disc in a monitoring and protection device for a screw conveyor of the present utility model;

[0022] Figure 5This is a three-dimensional view of the overall monitoring and protection device for a screw conveyor of the present utility model.

[0023] Reference numerals in the figure: 1, bearing; 2, bolt; 3, bearing flange; 4, proximity switch fixing bracket; 5, proximity switch; 6, wire; 7, proximity switch induction disc I; 8, protective net; 9, discharge casing; 10, discharge screw; 11, proximity switch induction disc II. Specific implementation mode

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present utility model.

[0025] See Figures 1-5 , an embodiment of a monitoring and protection device for a screw conveyor of the present utility model, includes a control system, a discharge casing 9, a bearing flange 3, a bearing 1 in the middle of the bearing flange 3, a discharge screw 10 and its driving mechanism. The bearing flange 3 is arranged at one end of the discharge casing 9. Specifically, the bearing flange 3 can be fixed to one end of the discharge casing 9 with bolts 2. The discharge screw 10 is arranged in the discharge casing 9, and one end is inserted into the bearing 1. The control system controls the driving mechanism to drive the discharge screw 10 to rotate. A detection device is arranged on the discharge casing 9. The detection device includes a detection component and a signal processing component. The detection component is close to the discharge screw 10. The detection device is connected to the control system. The detection component is used to detect the rotation speed and vibration parameters of the discharge screw 10. The signal processing component is used to receive and process the signals transmitted by the detection component and output corresponding control signals to the control system. The control system is used to automatically adjust the working parameters of the discharge screw 10 according to the detection results.

[0026] Furthermore, the above detection device further includes an alarm device. The alarm device is connected to the control system. The control system receives the abnormal signal of the working state of the discharge screw sent by the detection component and controls the alarm device to emit an alarm signal.

[0027] Specifically: the above detection component includes a proximity switch 5, a proximity switch fixing bracket 4 and a proximity switch induction disc. The proximity switch fixing bracket 4 is fixed at one end of the discharge casing 9. The proximity switch 5 is installed on the proximity switch fixing bracket 4. The proximity switch induction disc is installed at one end of the discharge screw 10 and is located below the proximity switch 5. The proximity switch induction disc is eccentrically arranged. When the point on the proximity switch induction disc farthest from the rotation center rotates to the highest position, it is closest to the lower end of the proximity switch 5.

[0028] Furthermore, the proximity switch induction disc includes a proximity switch induction disc I 7 and a proximity switch induction disc II 11. The proximity switch induction disc I 7 includes a semi-circular fixing ring and a semi-circular induction disc. The proximity switch induction disc II includes a semi-circular fixing ring. The semi-circular induction disc on the proximity switch induction disc I 7 and the semi-circular induction disc on the proximity switch induction disc II 11 are connected by bolts to form a circular ring and are fixed on the discharge screw. The semi-circular induction disc on the proximity switch induction disc I 7 is used to sense the lower end of the proximity switch 5 when it rotates to the highest position.

[0029] Still further, the proximity switch fixing bracket 4 is in an n shape, and there is a mounting hole in the middle of the proximity switch fixing bracket 4. The proximity switch 5 is vertically inserted into the mounting hole, and the upper end of the proximity switch 5 is connected to the control system through a wire 6.

[0030] Even further, the discharge machine housing 9 is a U-shaped housing. A protective net 8 is covered on a part of the open upper part of the U-shaped housing, and the proximity switch fixing bracket 4 is installed at the open part where the protective net 8 is not covered.

[0031] In specific implementation, for the detection component adopted by the present utility model, in addition to the above proximity switch, an infrared photoelectric sensor, a Hall sensor, an electromagnetic induction sensor or a vibration sensor can also be adopted. These detection devices can all adopt the prior art.

[0032] In addition, it further includes a far-infrared temperature sensor and a noise detector. The far-infrared temperature sensor and the noise detector are connected to the control system. The far-infrared temperature sensor and the noise detector are respectively arranged at positions on the discharge machine housing 9 close to the discharge screw 10, and are used to detect whether the surface temperature of the discharge screw 10 is normal. The noise detector is used to detect the noise near the discharge screw 10. When the detected surface temperature of the discharge screw 10 exceeds the set temperature range, or when the noise measured by the noise detector is greater than the set value, the equipment can be controlled to stop by the control system, or an alarm can be given through an alarm.

[0033] The methods for detecting vibration and noise mainly involve on-site detection methods, which can utilize displacement, acoustic analyzers, sound level meters, equivalent sound level measurement methods, etc. Vibration testing is to evaluate the vibration level of machines, equipment, and structures and indirectly evaluate the noise level. Usually, vibration sensors are mainly selected to detect vibration / amplitude, and the signal is converted into an electrical signal by a transmitter; for noise, noise sensors are mainly selected and converted into an electrical signal by a signal transmitter. After the electrical signals for detecting vibration and noise are calculated by a PLC and analyzed and compared according to the actual requirements of the equipment and process, alarm prompts, mechanical design, process improvement, etc. are carried out. Vibration and noise detection is a process involving multiple steps and technologies, which requires precise measuring tools and methods. At the same time, vibration testing, as a related detection means, provides an auxiliary diagnosis function for noise detection. When implementing these tests, the above factors should be considered, and mature existing technologies and detection devices should be preferably selected to ensure the accuracy and reliability of the test results.

[0034] The above control system mainly includes a microprocessor or a PLC controller, which is used to receive and process the signals transmitted from the detection part and then output corresponding control signals.

[0035] The working principle of the present utility model: When the screw conveyor is running, the discharge screw 10 will drive the proximity switch induction disc to rotate through friction. The proximity switch 5 can judge the working state of the discharge screw 10 by detecting the rotation speed and vibration of the discharge screw 10. For example, if the rotation speed of the discharge screw 10 suddenly drops, it may be caused by the jamming or wear of the discharge screw 10; if the vibration frequency of the discharge screw 10 increases, it may be caused by the change of the material characteristics or the unstable working state of the equipment. The proximity switch 5 can monitor the working state of the discharge screw 10 in real time and feedback the detection result to the control system. The control system can identify the state of the discharge screw 10 according to the detection result and automatically adjust the working parameters of the screw conveyor, such as the rotation speed, conveying capacity, etc., to ensure the normal operation of the equipment and production efficiency. At the same time, as a part of the equipment fault warning system, when the proximity switch 5 detects that the working state of the discharge screw 10 is abnormal, the control system can send an alarm in time through the alarm device to remind the operator to check and maintain.

[0036] Of course, the above description is not a limitation of the present utility model, and the present utility model is not limited to the above examples. Changes, modifications, additions, or substitutions made by those of ordinary skill in the art within the scope of the essence of the present utility model shall also fall within the protection scope of the present utility model.

Claims

1. A monitoring and protection device for a screw conveyor, comprising a control system, a discharge housing, a bearing flange, a bearing in the middle of the bearing flange, a discharge screw and a driving mechanism thereof, wherein the bearing flange is arranged at one end of the discharge housing, the discharge screw is arranged in the discharge housing, and one end is inserted into the bearing, the control system controls the driving mechanism to drive the discharge screw to rotate, and is characterized in that: A detection device is arranged on the discharge machine casing, and the detection device includes a detection component and a signal processing component. The detection component is close to the discharge screw, and the detection device is connected to the control system. The detection component is used to detect the rotation speed and vibration parameters of the discharge screw, and the signal processing component is used to receive and process the signal transmitted by the detection component, and output a corresponding control signal to the control system. The control system is used to automatically adjust the working parameters of the discharge screw according to the detection results.

2. The monitoring and protection device for a screw conveyor according to claim 1, characterized in that: The detection device also includes an alarm device, which is connected to the control system. The control system receives the abnormal working state signal of the discharge screw sent by the detection component and controls the alarm device to send out an alarm signal.

3. The monitoring and protection device for a screw conveyor according to claim 1 or 2, characterized in that: The detection component includes a proximity switch, a proximity switch fixing frame and a proximity switch sensing disk, wherein the proximity switch fixing frame is fixed to one end of the discharging casing, the proximity switch is mounted on the proximity switch fixing frame, the proximity switch sensing disk is mounted on one end of the discharging screw and is located below the proximity switch, the proximity switch sensing disk is eccentrically arranged, and when the point on the proximity switch sensing disk that is farthest from the rotation center rotates to the highest position, it is closest to the lower end of the proximity switch.

4. The monitoring and protection device for a screw conveyor according to claim 3 is characterized in that: The proximity switch sensing disk includes a proximity switch sensing disk I and a proximity switch sensing disk II. The proximity switch sensing disk I includes a semicircular fixing ring and a semicircular sensing disk. The proximity switch sensing disk II includes a semicircular fixing ring. The semicircular sensing disk on the proximity switch sensing disk I and the semicircular sensing disk on the proximity switch sensing disk II are connected by bolts to form a circular ring shape and are fixed on the discharging screw. The semicircular sensing disk on the proximity switch sensing disk I is used to sense the lower end of the proximity switch when it is rotated to the highest position.

5. The monitoring and protection device for a screw conveyor according to claim 3 is characterized in that: The proximity switch fixing frame is n-shaped, and a mounting hole is formed in the middle of the proximity switch fixing frame. The proximity switch is vertically inserted into the mounting hole, and the upper end of the proximity switch is connected to the control system through a wire.

6. The monitoring and protection device for a screw conveyor according to claim 4, characterized in that: The proximity switch fixing frame is n-shaped, and a mounting hole is formed in the middle of the proximity switch fixing frame. The proximity switch is vertically inserted into the mounting hole, and the upper end of the proximity switch is connected to the control system through a wire.

7. The monitoring and protection device for a screw conveyor according to claim 3, characterized in that: The discharging machine housing is a U-shaped housing, a protective net is covered on a partially open portion of the upper portion of the U-shaped housing, and the proximity switch fixing frame is installed at the open portion not covered by the protective net.

8. The monitoring and protection device for a screw conveyor according to claim 4, characterized in that: The discharging machine housing is a U-shaped housing, a protective net is covered on a partially open portion of the upper portion of the U-shaped housing, and the proximity switch fixing frame is installed at the open portion not covered by the protective net.

9. The monitoring and protection device for a screw conveyor according to claim 1 or 2, characterized in that: The detection component adopts an infrared photoelectric sensor, a Hall sensor, an electromagnetic induction sensor or a vibration sensor.

10. The monitoring and protection device for a screw conveyor according to claim 1 or 2, characterized in that: It also includes a far-infrared temperature sensor and a noise detector, which are connected to the control system and are arranged on the discharge casing close to the discharge screw. The far-infrared temperature sensor is used to detect whether the surface temperature of the discharge screw is normal, and the noise detector is used to detect noise near the discharge screw.

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