Screen damage detection and alarm device

Abstract

The utility model relates to a screen mesh structure of vibrating screen equipment, in particular to a screen mesh damage detection alarm device which comprises a track frame matched with a screen mesh frame, a driving assembly used for driving a detection head arrangement group to move is arranged on the track frame, and the detection head arrangement group comprises a plurality of photoelectric sensors arranged side by side. The light shielding plates are in one-to-one correspondence with the photoelectric sensors, light holes are formed in the light shielding plates, the light shielding plates deflect to light shielding positions under the elastic force of the elastic pieces in a normal state, and when the driving assembly drives the detection head arrangement group to start, the light shielding plates are switched between the light shielding positions and the light sensing positions; the device further comprises a control processor and an alarm. The control processor communicates with the photoelectric sensor and the alarm. Through the cooperation of the shading plate and the photoelectric sensor, the shading plate directly influences the induction of the photoelectric sensor in the elastic deflection process, so that high-precision and high-efficiency screen detection can be realized, the inaccuracy of manual detection is avoided, and the resource waste caused by directly replacing the screen without detection is also avoided.

Description

Technical Field

[0001] The utility model relates to a screen structure of a vibrating screen device, in particular to a screen damage detection and alarm device. Background Art

[0002] Vibrating screen is a filtering mechanical separation equipment used for mud solid phase treatment, which consists of a screen and a vibrator. The vibrating screen works by using the reciprocating vibration generated by the vibrator excitation. The upper rotating hammer of the vibrator causes the screen surface to produce a plane gyratory vibration, while the lower rotating hammer causes the screen surface to produce a conical gyratory vibration. The combined effect causes the screen surface to produce a complex gyratory vibration. Its vibration trajectory is a complex spatial curve. The curve is projected as a circle on the horizontal plane and an ellipse on the vertical plane. The amplitude can be changed by adjusting the exciting force of the upper and lower rotating hammers. And adjusting the spatial phase angle of the upper and lower hammers can change the curve shape of the screen surface motion trajectory and change the motion trajectory of the material on the screen surface.

[0003] In actual work, the screen of the vibrating screen may be damaged, and maintenance is required to ensure normal operation, otherwise it will cause material leakage and affect screening. However, the screen surface structure of the vibrating screen is relatively fine. Currently, screening is performed manually, which is not only inefficient but also inconvenient to operate. Therefore, most people adopt the method of regularly replacing the screen, but this leads to high use and maintenance costs, and also leads to unreasonable equipment maintenance.

[0004] It can be seen that the current vibrating screen mesh detection and maintenance method still has room for improvement, and should be optimized to improve the convenience and automation of screen mesh surface detection, so as to detect the current condition of the screen mesh more quickly and accurately, and facilitate the vibrating screen to operate more stably. Therefore, it is necessary to propose a more reasonable technical solution to solve the technical problems existing in the existing technology. Utility Model Content

[0005] In order to overcome at least one of the defects mentioned above, the utility model proposes a screen damage detection alarm device, which utilizes the standardization degree of the screen surface shape and generates a detection signal according to the position change amplitude or shape change amplitude that occurs when the detection head passes through the screen surface. The integrity of the screen can be directly judged according to the law of the detection signal, thereby achieving the purpose of rapid detection.

[0006] In order to achieve the above purpose, the device disclosed in the utility model can adopt the following technical solutions:

[0007] A screen damage detection and alarm device comprises a track frame installed in conjunction with the screen, a driving assembly is arranged on the track frame for driving a detection head arrangement group to move, the detection head arrangement group comprises a plurality of photoelectric sensors arranged side by side, and also comprises a shading plate corresponding to the photoelectric sensors one by one, the shading plate is provided with light-transmitting holes, under normal conditions, the shading plate is deflected to a shading position by the elastic force of an elastic member, and when the driving assembly drives the detection head arrangement group to start, the shading plate switches between the shading position and the light-sensitive position; it also comprises a control processor and an alarm, the photoelectric sensor is electrically connected to the control processor, and the control processor communicates and cooperates with the alarm.

[0008] The above-disclosed detection alarm device moves the detection head arrangement group on the surface of the screen, and the shading plate is regularly deflected by fitting the mesh of the screen, and the photoelectric sensor forms a regular signal. When the screen is abnormal, the deflection pattern of the shading plate passing through the abnormal area will change, and the signal formed by the photoelectric sensor will also change. In this way, it can be determined that the screen in the area has been deformed or damaged, and an alarm reminder is issued. The staff can conduct targeted verification and confirmation, thereby greatly improving the efficiency of screen detection and maintenance.

[0009] Furthermore, the detection head arrangement group used in the utility model can be constructed as a linear arrangement, covering a larger area to improve the efficiency of detection. The structure of the detection head arrangement group can be constructed in various forms, which are not limited to the only one. Here, optimization is made and one of the feasible options is proposed: the detection head arrangement group includes a cross bar, a deflection sleeve is provided on the cross bar, the elastic member cooperates with the deflection sleeve and applies elastic force to the deflection sleeve; the shading plate is connected to the deflection sleeve and deflects synchronously. When such a scheme is adopted, the deflection sleeve has a tendency to twist under normal conditions due to the elastic force received and drives the shading plate close to the surface of the screen.

[0010] Furthermore, the structure of the shading plate can be constructed in a variety of forms, which are not limited to a single one. Here, an optimization is made and one of the feasible options is proposed: the shading plate includes a main body, the front end of the main body is connected to a light hole, the light hole is bent and connected to the main body, and the light hole forms a light hole. When the main body is deflected to the shading position, the light hole deviates from the light transmission path of the photoelectric sensor so that the photoelectric sensor loses the induction. When the main body is deflected to the photosensitive position, the light hole is aligned with the light transmission path of the photoelectric sensor so that the photoelectric sensor obtains the induction. When such a scheme is adopted, when the shading plate falls into the sieve hole, the deflection angle of the shading plate is large, which is deflected toward the photosensitive position. When the shading plate contacts the sieve and deflects upward, the light hole is no longer aligned with the photoelectric sensor, and the photoelectric sensor loses the induction.

[0011] Furthermore, in order to make the shading plate move better on the surface of the screen and deflect, and improve the detection accuracy, the structure of the shading plate can be adjusted, which is not limited to the only one. Here, an optimization is made and one of the feasible options is proposed: the rear end of the main body is provided with a sliding part, the width of the sliding part is smaller than the aperture of the screen, and when the sliding part moves against the surface of the screen, it receives the support force of the screen and drives the main body to deflect up and down. When such a solution is adopted, the sliding part can be integrally formed with the shading plate, or it can be in the form of an external sliding rod; the end of the main body is a smooth arc surface, which can reduce friction with the screen.

[0012] Furthermore, when testing the screen surface, a one-way circular detection can be performed in the circumferential direction, and a reciprocating circular detection can also be performed in the linear direction. When performing linear detection, the following scheme can be adopted: the driving assembly is provided with a connecting seat for connecting the crossbar, the connecting seat is deflected relative to the driving assembly and is adjusted and switched between the advancing detection position and the retreating empty position. When the connecting seat is deflected to the advancing detection position, the detection head arrangement group contacts the surface of the screen and performs damage detection. When the connecting seat is deflected to the retreating empty position, the detection head arrangement group is separated from the surface of the screen. When such a scheme is adopted, it is convenient to reset after the advancing detection is completed.

[0013] Furthermore, in the present invention, the connection seat can be configured in a variety of ways, which are not limited to a single one. Here, an optimization is made and one feasible option is proposed: the connection seat is driven by a deflection drive member, and the deflection drive member is connected to the control processor. When such a scheme is adopted, the deflection drive member can drive the connection seat to deflect upward to raise the detection head arrangement group, so that the detection head arrangement group leaves the screen surface; or drive the connection seat to deflect downward to lower the detection head arrangement group, so that the detection head arrangement group can contact the screen surface.

[0014] Furthermore, in the present invention, the deflection drive member can be constructed in a variety of forms, which are not limited to a single one. Here, an optimization is performed and one feasible option is proposed: the deflection drive member includes a telescopic drive rod.

[0015] Furthermore, in the present invention, the driving assembly is used to drive the detection to move the arrangement group as a whole. The driving assembly can be implemented in a variety of ways, which are not limited to the only one. Here, an optimization is made and one of the feasible options is proposed: the driving assembly includes a guide slide bar and a slider, the slider slides to fit the guide slide bar and is driven by a motor and a synchronous belt. When such a scheme is adopted, the number of guide slide bars is at least two, and two sliders can be set on the same guide slide bar, and the slider of one guide slide bar is connected to the synchronous belt and driven to move, thereby realizing the synchronous movement of the sliders on the two guide slide bars.

[0016] Furthermore, the structure of the track frame can be constructed in a variety of forms, which are not limited to a single one. Here, an optimization is made and one of the feasible options is proposed: the track frame includes a frame and a plurality of connecting arms, and the connecting arms include a fixed section and a telescopic section, and the fixed section and the telescopic section are adjusted and fixed by a locking member. When such a solution is adopted, the fixed section is connected and fixed to the frame, and the telescopic section can be adjusted according to the actual installation height, so as to ensure that the detection head arrangement group and the screen surface form a better detection gap.

[0017] Furthermore, in the present invention, the alarm device may be selected as follows: the alarm device includes a display, an alarm light and a sound device, the display device is used to display the position of the abnormal screen, and the alarm light and the sound device are used to provide sound and light reminders.

[0018] Compared with the prior art, some beneficial effects of the technical solution disclosed in the utility model include:

[0019] The utility model utilizes the cooperation between the shading plate and the photoelectric sensor. The shading plate directly affects the induction of the photoelectric sensor during the elastic deflection process, thereby realizing high-precision and high-efficiency screen detection, avoiding the inaccuracy of manual detection, and avoiding the waste of resources caused by directly replacing the screen without detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the utility model and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other relevant drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 This is a front view schematic diagram of the damage detection alarm device. In this installed state, the shading plate moves to the shading position.

[0022] Figure 2 This is a front view schematic diagram of the damage detection alarm device. In this installed state, the shading plate moves to the light-sensitive position.

[0023] Figure 3 This is a front view schematic diagram of the damage detection alarm device. In this installed state, the connecting seat moves to the retracted empty position.

[0024] Figure 4 It is a schematic diagram of the top view of the damage detection alarm device.

[0025] In the above drawings, the meanings of the various marks are as follows:

[0026] 1. Connecting arm; 101. Fixed section; 102. Telescopic section; 2. Screen; 3. Guide slide bar; 4. Sunshade; 401. Main body; 402. Light hole; 403. Sliding part; 5. Cross bar; 6. Photoelectric sensor; 7. Deflection drive; 8. Connecting seat; 9. Sliding block; 10. Frame. DETAILED DESCRIPTION

[0027] The present invention will be further explained below in conjunction with the accompanying drawings and specific embodiments.

[0028] In view of the deficiencies in the prior art of vibrating screen equipment screen detection, the following embodiments are optimized and overcome the defects in the prior art.

[0029] Example

[0030] like Figure 1 to Figure 4 As shown, this embodiment provides a screen 2 damage detection alarm device for performing efficient and accurate screen 2 detection, and can reflect abnormal parts and give reminders. Specifically, the detection alarm device includes a track frame that cooperates with the screen 2, and a driving component is provided on the track frame to drive the detection head arrangement group to move. The detection head arrangement group includes a number of photoelectric sensors 6 arranged side by side, and also includes a shading plate 4 corresponding to the photoelectric sensors 6 one by one. The shading plate 4 is provided with a light-transmitting hole. Under normal conditions, the shading plate 4 is deflected to the shading position by the elastic force of the elastic member. When the driving component drives the detection head arrangement group to start, the shading plate 4 switches between the shading position and the photosensitive position; it also includes a control processor and an alarm (not shown in the attached figure), the photoelectric sensor 6 is electrically connected to the control processor, and the control processor communicates with the alarm.

[0031] The detection alarm device disclosed in the present embodiment moves the detection head arrangement group on the surface of the screen 2, and the shading plate 4 is regularly deflected by fitting the mesh of the screen 2, and the photoelectric sensor 6 forms a regular signal. When the screen 2 is abnormal, the deflection pattern of the shading plate 4 passing through the abnormal area will change, and the signal formed by the photoelectric sensor 6 will also change. In this way, it can be determined that the screen 2 in the area has been deformed or damaged, and an alarm reminder is issued. The staff can conduct targeted verification and confirmation, thereby greatly improving the efficiency of detection and maintenance of the screen 2.

[0032] The detection head arrangement group used in this embodiment can be constructed as a linear arrangement, covering a larger area to improve the efficiency of detection. The structure of the detection head arrangement group can be constructed in various forms, which are not limited to the only one. This embodiment is optimized and adopts one of the feasible options: the detection head arrangement group includes a cross bar 5, a deflection sleeve is provided on the cross bar 5, the elastic member cooperates with the deflection sleeve and applies elastic force to the deflection sleeve; the shading plate 4 is connected to the deflection sleeve and deflects synchronously. When such a solution is adopted, the deflection sleeve has a tendency to twist under normal conditions due to the elastic force received and drives the shading plate 4 close to the surface of the screen 2.

[0033] The structure of the light shielding plate 4 can be constructed in various forms, which are not limited to the only one. This embodiment is optimized and adopts one of the feasible options: the light shielding plate 4 includes a main body 401, and the front end of the main body 401 is connected to a light hole 402, the light hole 402 is bent and connected to the main body 401, and the light hole 402 forms a light hole. When the main body 401 is deflected to the light shielding position, the light hole deviates from the light transmission path of the photoelectric sensor 6 so that the photoelectric sensor 6 loses the induction. When the main body 401 is deflected to the photosensitive position, the light hole is aligned with the light transmission path of the photoelectric sensor 6 so that the photoelectric sensor 6 obtains the induction. When such a scheme is adopted, when the light shielding plate 4 falls into the sieve hole, the deflection angle of the light shielding plate 4 is large, which is deflected toward the photosensitive position. When the light shielding plate 4 contacts the screen 2 and deflects upward, the light hole is no longer aligned with the photoelectric sensor 6, and the photoelectric sensor 6 loses the induction.

[0034] Preferably, the photoelectric sensor 6 outputs a high level when it can generate a sensing signal, and outputs a low level when it cannot generate a sensing signal. In the process of moving detection, the high level and the low level generated by a photoelectric sensor 6 change periodically in a certain regular pattern. If there is a situation that does not conform to the periodic change, it means that the screen 2 at that location is abnormal, and may be concave, deformed, protruding, or even damaged.

[0035] In order to make the shading plate 4 move and deflect better on the surface of the screen 2 and improve the detection accuracy, the structure of the shading plate 4 can be adjusted, which is not limited to the only one. This embodiment is optimized and adopts one of the feasible options: the rear end of the main body 401 is provided with a sliding part 403, the width of the sliding part 403 is smaller than the aperture of the screen 2, and when the sliding part 403 moves against the surface of the screen 2, it receives the support force of the screen 2 and drives the main body 401 to deflect up and down. When such a solution is adopted, the sliding part 403 can be integrally formed with the shading plate 4, or it can be in the form of an external sliding rod; the end of the main body 401 is a smooth arc surface, which can reduce the friction with the screen 2.

[0036] When testing the surface of the screen 2, a one-way circular detection is performed in the circumferential direction, and a reciprocating circular detection can also be performed in the linear direction. When performing linear detection, the following scheme can be adopted: the driving assembly is provided with a connecting seat 8 for connecting the crossbar 5, the connecting seat 8 deflects relative to the driving assembly and is adjusted and switched between the advancing detection position and the retreating empty position. When the connecting seat 8 deflects to the advancing detection position, the detection head arrangement group contacts the surface of the screen 2 and performs damage detection. When the connecting seat 8 deflects to the retreating empty position, the detection head arrangement group is separated from the surface of the screen 2. When such a scheme is adopted, it is convenient to reset after the advancing detection is completed.

[0037] In this embodiment, the connection seat 8 can be configured in a variety of ways, which are not limited to the only one. This embodiment is optimized and adopts one of the feasible options: the connection seat 8 is driven by a deflection drive member, and the deflection drive member is connected to the control processor. When such a scheme is adopted, the deflection drive member can drive the connection seat 8 to deflect upward to raise the detection head arrangement group, so that the detection head arrangement group leaves the surface of the screen 2; or drive the connection seat 8 to deflect downward to lower the detection head arrangement group, so that the detection head arrangement group can contact the surface of the screen 2.

[0038] In this embodiment, the deflection driving member can be constructed in a variety of forms, which are not limited to the only ones. Here, optimization is performed and one feasible option is adopted: the deflection driving member includes a telescopic driving rod.

[0039] In this embodiment, the driving assembly is used to drive the detection by the arrangement group to move as a whole. The driving assembly can be implemented by a variety of schemes, which are not limited to the only one. This embodiment is optimized and adopts one of the feasible options: the driving assembly includes a guide slide bar 3 and a slider 9, the slider 9 is slidably matched to the guide slide bar 3, and is driven by a motor and a synchronous belt. When such a scheme is adopted, the number of guide slide bars 3 is at least two, and two sliders 9 can be set on the same guide slide bar 3, and the slider 9 of one guide slide bar 3 is connected to the synchronous belt and driven to move, thereby realizing the synchronous movement of the sliders 9 on the two guide slide bars 3.

[0040] The structure of the track frame can be constructed in various forms, which are not limited to a single one. This embodiment is optimized and adopts one of the feasible options: the track frame includes a frame 10 and a plurality of connecting arms 1, and the connecting arms 1 include a fixed section 101 and a telescopic section 102, and the fixed section 101 and the telescopic section 102 are adjusted and fixed by a locking member. When such a solution is adopted, the fixed section 101 is connected and fixed to the frame 10, and the telescopic section 102 can be adjusted according to the actual installation height, so as to ensure that the detection head arrangement group and the surface of the screen 2 form a better detection gap.

[0041] In this embodiment, the alarm device can be selected as follows: the alarm device includes a display, an alarm light and a sound, the display is used to show the abnormal position of the screen 2, and the alarm light and the sound are used for sound and light reminder.

[0042] The above are the implementation methods listed in this embodiment, but this embodiment is not limited to the above optional implementation methods. Those skilled in the art can arbitrarily combine the above methods to obtain other various implementation methods. Anyone can derive other various implementation methods under the inspiration of this embodiment. The above specific implementation methods should not be understood as limiting the protection scope of this embodiment. The protection scope of this embodiment should be based on the definition in the claims.

Claims

1. A screen damage detection and alarm device, characterized in that: The invention comprises a track frame which is erected in cooperation with a screen (2), a driving assembly being arranged on the track frame for driving a detection head arrangement group to move, the detection head arrangement group comprising a plurality of photoelectric sensors (6) arranged side by side, and a shading plate (4) corresponding to the photoelectric sensors (6) one by one, the shading plate (4) being provided with light-transmitting holes, and the shading plate (4) being deflected to a shading position by the elastic force of an elastic member under normal conditions, and when the driving assembly drives the detection head arrangement group to start, the shading plate (4) switches between the shading position and the light-sensitive position; the invention also comprises a control processor and an alarm, the photoelectric sensors (6) being electrically connected to the control processor, and the control processor communicating with the alarm.

2. The screen damage detection and alarm device according to claim 1 is characterized in that: The detection head arrangement group comprises a cross bar (5), a deflection sleeve is arranged on the cross bar (5), the elastic member cooperates with the deflection sleeve and applies elastic force to the deflection sleeve; the shading plate (4) is connected to the deflection sleeve and deflects synchronously.

3. The screen damage detection and alarm device according to claim 1 or 2, characterized in that: The shading plate (4) comprises a main body (401), the front end of the main body (401) is connected to a light hole (402), the light hole (402) is bent and connected to the main body (401), and the light hole (402) forms a light hole. When the main body (401) is deflected to a light-shielding position, the light-transmitting hole deviates from the light transmission path of the photoelectric sensor (6) so that the photoelectric sensor (6) loses the induction. When the main body (401) is deflected to a light-sensitive position, the light-transmitting hole is aligned with the light transmission path of the photoelectric sensor (6) so that the photoelectric sensor (6) obtains the induction.

4. The screen damage detection and alarm device according to claim 3 is characterized in that: A sliding portion (403) is provided at the rear end of the main body (401); the width of the sliding portion (403) is smaller than the aperture of the screen (2); when the sliding portion (403) moves in contact with the surface of the screen (2), it receives the support force of the screen (2) and drives the main body (401) to deflect up and down.

5. The screen damage detection and alarm device according to claim 2 is characterized in that: The driving assembly is provided with a connecting seat (8) for connecting the cross bar (5); the connecting seat (8) is deflected relative to the driving assembly and is adjusted and switched between an advancing detection position and a retreating idle position; when the connecting seat (8) is deflected to the advancing detection position, the detection head arrangement group contacts the surface of the screen (2) and performs damage detection; when the connecting seat (8) is deflected to the retreating idle position, the detection head arrangement group is separated from the surface of the screen (2).

6. The screen damage detection and alarm device according to claim 5 is characterized in that: The connecting seat (8) is driven by a deflection driving member, and the deflection driving member is connected to a control processor.

7. The screen damage detection and alarm device according to claim 6, characterized in that: The deflection driving member comprises a telescopic driving rod.

8. The screen damage detection and alarm device according to claim 1 is characterized in that: The driving assembly comprises a guide slide bar (3) and a slider (9); the slider (9) is slidably fitted to the guide slide bar (3) and driven by a motor and a synchronous belt.

9. The screen damage detection and alarm device according to claim 1, characterized in that: The track frame comprises a frame (10) and a plurality of connecting arms (1); the connecting arms (1) comprise a fixed section (101) and a telescopic section (102); and the fixed section (101) and the telescopic section (102) are adjusted and fastened by a locking piece.

10. The screen damage detection and alarm device according to claim 1, characterized in that: The alarm device comprises a display, an alarm light and a sound system. The display is used to display the abnormal position of the screen (2), and the alarm light and the sound system are used to provide sound and light reminders.

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