Intermittent start-stop control device for chain flight conveyors

Abstract

The utility model provides a kind of chain scraper conveyor intermittent start-stop control device, it is related to material unloading structure technology, specifically discloses the intercommunication casing installed in the lower part of dust collector cone, one side of intercommunication casing is provided with mounting port, mounting port rotation is equipped with the material receiving plate for closing the opening place of dust collector cone lower part, the sidewall of material receiving plate is equipped with mounting shaft, the outer side wall of mounting shaft is equipped with counterweight, the positioner structure for adjusting the mounting position of counterweight is equipped on mounting shaft, the outer side wall of intercommunication casing is equipped with sensor, sensor is signal connected with the driving mechanism of chain scraper conveyor, chain scraper conveyor only starts when material accumulation reaches set threshold value, it is automatically stopped after conveying, avoid the no-load operation of equipment in no material state, significantly save electric energy and equipment loss.

Description

Technical Field

[0001] This utility model relates to the field of material unloading structure technology, and more specifically, to an intermittent start-stop control device for a chain scraper conveyor. Background Technology

[0002] In the chemical industry, various boilers and dust-laden gas conveying systems all have dust collection systems at their terminals. The solid powdery material produced below the dust collector cone needs to be collected and conveyed by a chain scraper conveyor. The dust generation of the dust collection system varies depending on the upstream process, making it unstable. Using a time-based start-stop system for the chain scraper conveyor would lead to severe material accumulation and blockage of the conveying system when dust generation is high. Therefore, a timed start-stop system cannot be used to control the intermittent start and stop of the scraper conveyor. When the dust collection system is running, the chain scraper conveyor needs to operate continuously. During operation, the chain scraper experiences intense friction with the conveyor guide trough, resulting in high noise levels, high energy consumption, and a high equipment failure rate. Utility Model Content

[0003] The purpose of this utility model is to provide an intermittent start-stop control device for a chain scraper conveyor, which addresses the shortcomings of the existing technology and solves the problems mentioned in the background.

[0004] The technical solution of this utility model is implemented as follows: This utility model provides an intermittent start-stop control device for a chain scraper conveyor, including a connecting shell installed at the lower part of a dust collector cone. One side of the connecting shell has an installation port, and a receiving plate for closing the opening at the lower part of the dust collector cone is rotatably mounted on the installation port. An installation shaft is provided on the side wall of the receiving plate, and a counterweight is provided on the outer side wall of the installation shaft. An adjustment structure for adjusting the installation position of the counterweight is provided on the installation shaft. A sensor is provided on the outer side wall of the connecting shell, and the sensor is signal-connected to the drive mechanism of the chain scraper conveyor.

[0005] In some technical solutions of this utility model, the adjustment structure includes a slider, an installation groove is provided on the outer side wall of the mounting shaft along its axial direction, the slider is slidably disposed in the installation groove, the slider is connected to the counterweight, and a push rod structure is provided in the installation groove, the push rod structure is connected to the slider.

[0006] In some technical solutions of this utility model, an external thread is provided on the outer side wall of the mounting shaft, and a mounting hole adapted to the mounting shaft is provided on the side wall of the counterweight, with an internal thread that mates with the external thread in the mounting hole.

[0007] In some technical solutions of this utility model, a balance plate is installed on the outer wall of the counterweight.

[0008] In some technical solutions of this utility model, an anti-vibration structure is installed on the side of the receiving plate away from the dust collector cone.

[0009] In some technical solutions of this utility model, the anti-vibration structure includes several spring structures, all of which are installed on the side of the receiving plate away from the dust collector cone, and a top rod is installed on the free end of the spring structure.

[0010] In some technical solutions of this utility model, a telescopic spring is installed on the free end of the spring structure, and the push rod is installed inside the telescopic spring.

[0011] In some technical solutions of this utility model, a groove is provided on the side of the receiving plate facing the dust collector cone, and the horizontal height of the side of the groove near the mounting shaft is higher than the horizontal height of the side of the groove away from the mounting shaft.

[0012] Compared to existing technologies, this utility model has at least the following advantages or beneficial effects: The lever system composed of the receiving plate and the counterweight accurately senses the weight of the accumulated material. When the material weight exceeds the counterweight's balancing force, the receiving plate flips open, triggering the sensor. The sensor sends a signal to start the conveyor; after the material is emptied, the counterweight pulls the rotating plate back to close, and the sensor sends a signal to stop the machine. The conveyor only starts when the material accumulation reaches a set threshold (corresponding to the counterweight's balance point) and automatically stops after conveying, avoiding no-load operation and significantly saving energy and reducing equipment wear. By pushing the slider along the mounting shaft, the radial distance from the counterweight to the fulcrum is changed, thereby precisely adjusting the required balancing force. At the moment the receiving plate closes, the top rod impacts the connecting shell. The telescopic spring absorbs the impact energy. The top rod rebounds under the spring's action, vibrating the receiving plate. Vibration effectively removes sticky material adhering to the surface of the receiving plate, preventing material accumulation and ensuring the accuracy and reliability of each opening and closing movement of the receiving plate. In particular, the addition of a telescopic spring for secondary impact further enhances the peeling effect. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the installation structure of this utility model.

[0014] Figure 2 This is a schematic diagram of the first installation structure of the counterweight block in this utility model.

[0015] Figure 3 This is a schematic diagram of the second installation structure of the counterweight block in this utility model.

[0016] Figure 4 This is a cross-sectional view of the installation structure of the receiving plate in this utility model.

[0017] Figure 5 This is a schematic diagram of the installation structure of the anti-vibration structure in this utility model.

[0018] Reference numerals: 1. Dust collector cone; 2. Connecting shell; 3. Shell; 4. Chain scraper conveyor; 5. Receiving plate; 6. Mounting shaft; 7. Sensor; 8. Balance plate; 9. Counterweight; 10. Push rod structure; 11. Slide groove; 12. Top rod; 13. Spring structure; 14. Telescopic spring. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without inventive effort are within the scope of protection of this invention.

[0021] Example This utility model provides a chain scraper conveyor with intermittent start / stop control device, such as... Figures 1-5As shown, the device includes a connecting shell 2 installed at the lower part of the dust collector cone 1. The connecting shell 2 is frustoconical in shape, with a large-diameter end connected to the lower part of the dust collector cone and a small-diameter end on the side away from the dust collector cone, providing downward power for dust conveying. An installation port is provided on one side of the connecting shell 2. The installation port is elongated and rotatably fitted with a receiving plate 5 for sealing the opening at the lower part of the dust collector cone 1. The receiving plate 5 is rotatably mounted inside the installation port via a bushing, the outer diameter of which matches the width of the installation port. An installation shaft 6 is provided on the side wall of the receiving plate 5, parallel to the receiving plate 5. A counterweight 9 is provided on the outer side wall of the installation shaft 6, and an adjusting structure is provided on the installation shaft 6 for adjusting the installation position of the counterweight 9. Thus, the receiving plate 5 and the counterweight 9 slidably mounted on the installation shaft 6 form a lever system. By changing the counterweight torque through the adjusting structure, the device flips over. When the weight of the released material exceeds the counterweight balance force, the flip is triggered, achieving the purpose of unloading the material. A sensor 7 is installed on the outer wall of the connecting shell 2. The sensor 7 is signal-connected to the drive mechanism of the chain scraper conveyor 4 and is used to start the operation of the chain scraper conveyor. The sensor 7 monitors the status of the receiving plate 5 in real time to realize the closed-loop control of the conveyor's start and stop. When the material collected by the dust collector cone 1 falls to the surface of the receiving plate 5 and the weight of the accumulated material exceeds the set threshold of the counterweight 9, the receiving plate 5 rotates downward around the mounting shaft 6, and the sensor 7 detects the change in the position of the receiving plate 5 and sends a start signal to the drive mechanism of the chain scraper conveyor 4. After the material is discharged, the counterweight 9 pulls the receiving plate 5 to reset and close, and the sensor 7 sends a stop signal. This realizes that the conveyor starts when the material accumulation reaches the threshold, avoids no-load operation, responds to the material accumulation status in real time, and eliminates the risk of cone blockage.

[0022] In some technical solutions of this utility model, the adjustment structure includes a slider. An installation groove is provided along the axial direction on the outer wall of the mounting shaft 6. The slider is slidably disposed within the installation groove and is connected to the counterweight 9. A push rod structure 10 is provided within the installation groove and is connected to the slider. The push rod structure 10 pushes the slider to slide along the installation groove, changing the radial distance between the counterweight 9 and the mounting shaft 6. When the slider displacement changes its gravitational torque on the mounting shaft 6, it realizes the opening and closing of the receiving plate 5. Thus, when the material on the receiving plate 5 reaches a threshold, the opening and closing of the lower part of the dust collector cone 1 is precisely controlled, thereby achieving intermittent start-up of the chain scraper conveyor 4 without stopping the machine.

[0023] In another embodiment of some technical solutions of this utility model, an external thread is provided on the outer side wall of the mounting shaft 6, and a mounting hole adapted to the mounting shaft 6 is provided on the side wall of the counterweight 9. An internal thread that mates with the external thread is provided in the mounting hole. The operator rotates the counterweight 9 located on the mounting shaft 6 and moves the counterweight 9 axially along the mounting shaft 6 through the threaded pair, changing its gravitational torque on the mounting shaft 6, thereby realizing the opening and closing of the receiving plate 5. Thus, when the material on the receiving plate 5 reaches the threshold, the lower part of the dust collector cone 1 is precisely controlled to open and close, thereby realizing the intermittent start of the chain scraper conveyor 4 without stopping the machine. Furthermore, the engagement of the external thread and the internal thread realizes axial displacement, and the threaded pair provides mechanical self-locking to avoid counterweight displacement caused by vibration.

[0024] In some technical solutions of this utility model, a balance plate 8 is installed on the outer wall of the counterweight 9. When the counterweight 9 moves, the balance plate 8 generates air damping, which increases the resistance to movement, suppresses the oscillation of the receiving plate 5, reduces its mechanical vibration, shortens the closing time of the receiving plate 5, and reduces material spillage.

[0025] In some technical solutions of this utility model, the receiving plate 5 is equipped with an anti-vibration structure on the side away from the dust collector cone.

[0026] In some technical solutions of this utility model, the anti-vibration structure includes several spring structures 13, all of which are installed on the side of the receiving plate 5 away from the dust collector cone. A push rod 12 is installed on the free end of the spring structure 13. When the receiving plate 5 closes, the push rod 12 impacts the connecting shell 2. The telescopic spring 14 absorbs the impact energy, and the push rod 12 rebounds and vibrates the receiving plate 5. The vibration causes the sticky material to peel off, preventing the material from accumulating on the receiving plate 5 and affecting the opening and closing accuracy of the receiving plate 5.

[0027] In some technical solutions of this utility model, a telescopic spring 14 is installed on the free end of the spring structure 13, and the push rod 12 is installed inside the telescopic spring 14. When the push rod 12 rebounds and vibrates the receiving plate 5, the compressed telescopic spring 14 located on the push rod 12 is reset again under the traction of the spring structure 13, which can perform a secondary tap on the receiving plate 5, thereby providing the peeling effect of this structure on sticky materials.

[0028] In some technical solutions of this utility model, a chute 11 is provided on the side of the receiving plate 5 facing the dust collector cone. The horizontal height of the side of the chute 11 near the mounting shaft 6 is higher than the horizontal height of the side of the chute 11 away from the mounting shaft 6. The material slides along the inclined surface of the chute 11 towards the outlet side, which can speed up the unloading of the material. The inclined surface in the chute 11 is designed with an inclination angle of 3°-5° to achieve directional flow of the material, eliminate the risk of material accumulation at the hinge, and ensure the smooth operation of this structure.

[0029] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A chain scraper conveyor intermittent start / stop control device, characterized in that, The assembly includes a connecting housing (2) installed at the lower part of the dust collector cone (1). One side of the connecting housing (2) has an installation port. The installation port is rotatably provided with a receiving plate (5) for closing the lower opening of the dust collector cone (1). The receiving plate (5) has an installation shaft (6) on its side wall. The installation shaft (6) has a counterweight (9) on its outer side wall. The installation shaft (6) has an adjustment structure for adjusting the installation position of the counterweight (9). The connecting housing (2) has a sensor (7) on its outer side wall for detecting the position of the installation shaft (6). The sensor (7) is connected to the drive mechanism of the chain scraper conveyor (4) for starting the chain scraper conveyor (4).

2. The intermittent start / stop control device for a chain scraper conveyor according to claim 1, characterized in that, The adjustment structure includes a slider. An installation groove is provided on the outer side wall of the mounting shaft (6) along its axial direction. The slider is slidably disposed in the installation groove. The slider is connected to the counterweight (9). A push rod structure (10) is provided in the installation groove. The push rod structure (10) is connected to the slider.

3. The intermittent start-stop control device for a chain scraper conveyor according to claim 1, characterized in that, The outer side wall of the mounting shaft (6) is provided with an external thread, and the side wall of the counterweight (9) is provided with a mounting hole that is adapted to the mounting shaft (6), and the mounting hole is provided with an internal thread that is threaded to the external thread.

4. The intermittent start / stop control device for a chain scraper conveyor according to claim 2 or 3, characterized in that, A balance plate (8) is installed on the outer wall of the counterweight (9).

5. The intermittent start / stop control device for a chain scraper conveyor according to claim 2, characterized in that, The receiving plate (5) is equipped with a shock-absorbing structure on the side away from the dust collector cone.

6. The intermittent start-stop control device for a chain scraper conveyor according to claim 5, characterized in that, The anti-vibration structure includes several spring structures (13), each of which is installed on the side of the receiving plate (5) away from the dust collector cone. A top rod (12) is installed on the free end of each spring structure (13).

7. The intermittent start / stop control device for a chain scraper conveyor according to claim 6, characterized in that, A telescopic spring (14) is installed on the free end of the spring structure (13), and the top rod (12) is installed inside the telescopic spring (14).

8. The intermittent start / stop control device for a chain scraper conveyor according to claim 1, characterized in that, The receiving plate (5) has a groove (11) on the side facing the dust collector cone. The horizontal height of the groove (11) near the mounting shaft (6) is higher than the horizontal height of the groove (11) away from the mounting shaft (6).

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