阅读说明：本技术 一种用于石灰窑的石灰石上料斗限位开关 (A lime stone feeding funnel limit switch for limekiln ) 是由 周长青 王乐涛 赵金峰 张玲 张念军 于 2021-08-27 设计创作，主要内容包括：本发明提供一种用于石灰窑的石灰石上料斗限位开关,包括安装板、限位组件、感应组件、清扫组件、预警组件和电控柜；本发明中,限位组件的设置,红外测距传感器位于安装箱内,透明复合板便于红外测距传感器检测上料斗内物料的高度,保证红外测距传感器正常运行,且透明复合板和安装箱对红外测距传感器起到防护作用,避免红外测距传感器出现碰撞损坏的现象,导热板将红外测距传感器运行中产生的热量传导至散热板,散热板对导热板传导的热量进行散失,达到对红外测距传感器散热的目的；感应组件的设置,数据采集器采集接近开关和红外测距传感器检测的数据信息,配合IC芯片实现对伺服电机的控制,保证清扫组件正常运行。(The invention provides a limit switch of a limestone feeding hopper for a lime kiln, which comprises a mounting plate, a limit component, an induction component, a cleaning component, an early warning component and an electric control cabinet, wherein the mounting plate is fixedly connected with the limit component; according to the invention, the limit component is arranged, the infrared distance measuring sensor is positioned in the installation box, the transparent composite plate is convenient for the infrared distance measuring sensor to detect the height of the material in the loading hopper, the normal operation of the infrared distance measuring sensor is ensured, the transparent composite plate and the installation box play a role in protecting the infrared distance measuring sensor, the phenomenon that the infrared distance measuring sensor is damaged by collision is avoided, the heat conducting plate conducts heat generated in the operation of the infrared distance measuring sensor to the heat radiating plate, and the heat radiating plate dissipates the heat conducted by the heat conducting plate, so that the purpose of radiating the infrared distance measuring sensor is achieved; the setting of response subassembly, data collection station gather proximity switch and infrared distance measuring sensor detection's data message, and the cooperation IC chip realizes cleaning the subassembly normal operating to servo motor's control.)

1. The utility model provides a lime stone feeding funnel limit switch for lime kiln which characterized in that: the cleaning device comprises a mounting plate (1), a limiting component (2), an induction component (3), a cleaning component (4), an early warning component (5) and an electric control cabinet (6), wherein the limiting component (2) is mounted on one side above the mounting plate (1); the induction component (3) is arranged on the other side above the mounting plate (1); the cleaning assembly (4) is arranged above the plate loading assembly (1), and the cleaning assembly (4) is positioned between the limiting assembly (2) and the sensing assembly (3); the early warning assembly (5) is arranged on one side, away from the limiting assembly (2), of the induction assembly (3); the electric control cabinet (6) is arranged on one side, which is far away from the induction component (3), above the mounting plate (1);

the limiting assembly (2) comprises an installation box (21), a transparent composite plate (22), an installation column (23), a proximity switch (24), a heat dissipation plate (25), a heat conduction plate (26) and an infrared distance measuring sensor (27), wherein the installation box (21) is installed on one side above the installation plate (1); the transparent composite plate (22) is arranged above the installation box (21); the number of the mounting columns (23) is two, and the mounting columns (23) are mounted above the front side and the rear side of the mounting box (21); the number of the proximity switches (24) is two, and the proximity switches (24) are arranged above the side, close to each other, of the mounting column (23); the heat dissipation plates (25) are arranged in plurality, the heat dissipation plates (25) are arranged on the front side and the rear side of the installation box (21), and the heat dissipation plates (25) penetrate into the installation box (21); the number of the heat conducting plates (26) is two, the heat conducting plates (26) are arranged on the front side and the rear side in the installation box (21), and the heat conducting plates (26) are connected with the tail ends of the heat radiating plates (25); the infrared distance measuring sensor (27) is arranged in the middle position below the inner part of the installation box (21).

2. A limestone feed hopper limit switch for a lime kiln as defined in claim 1, wherein: the induction assembly (3) comprises an induction box (31), a junction box (32), a data acquisition unit (33), an IC chip (34), a timer (35) and a storage (36), wherein the induction box (31) is arranged on one side, deviating from the installation box (21), above the installation plate (1); the junction box (32) is arranged above the inside of the induction box (31); the timer (35) is arranged on one side inside the induction box (31); the IC chip (34) is arranged on one side close to the timer (35) below the inner part of the induction box (31); the storage (36) is arranged on the side, which is far away from the timer (35), below the inside of the induction box (31); the data collector (33) is arranged below the inside of the induction box (31), and the data collector (33) is positioned between the IC chip (34) and the storage (36).

3. A limestone feed hopper limit switch for a lime kiln as defined in claim 1, wherein: the cleaning assembly (4) comprises a servo motor (41), a rotary plate (42), a fixing plate (43) and a cleaning brush (44), wherein the servo motor (41) is arranged above the mounting plate (1), and the servo motor (41) is positioned between the induction box (31) and the mounting box (21); one end of the rotary plate (42) is arranged above the servo motor (41); the fixed plate (43) is arranged below the rotary plate (42); the cleaning brush (44) is arranged below the fixing plate (43), and the lower end of the cleaning brush (44) is attached to the upper end of the transparent composite plate (22).

4. A limestone feed hopper limit switch for a lime kiln as defined in claim 1, wherein: the early warning assembly (5) comprises an assembling plate (51), a mounting seat (52) and an audible and visual alarm (53), wherein the assembling plate (51) is mounted on one side, away from the mounting box (21), of the induction box (31); the mounting seat (52) is positioned in the middle of the outer side of the assembling plate (51), and the mounting seat (52) is provided with a mounting groove; and the base of the audible and visual alarm (53) is arranged in the mounting groove of the mounting seat (52).

5. A limestone feed hopper limit switch for a lime kiln as defined in claim 1, wherein: the mounting plate (1) is of a cuboid structure, a plurality of penetrating mounting holes are formed in the mounting plate (1), and the mounting plate (1) is used for mounting the limit switch on the feeding hopper; the electric control cabinet (6) is connected with a mains supply through a wire, and the electric control cabinet (6) is used for supplying power to the limit switch.

6. A limestone feed hopper limit switch for a lime kiln as defined in claim 1, wherein: the upper end of the installation box (21) is arranged in an open manner; the size of the transparent composite plate (22) is matched with that of the installation box (21); the upper end of the mounting column (23) is higher than the upper end of the mounting box (21); the proximity switch (24) is respectively connected with the electric control cabinet (6) and the data collector (33) through wires, the detection head of the proximity switch (24) is aligned with the fixing plate (43), and the proximity switch (24) is used for detecting the distance between the proximity switch and the fixing plate (43); the heat dissipation plates (25) are uniformly distributed on the front side and the rear side of the installation box (21), and the heat dissipation plates (25) are used for dissipating heat conducted by the heat conduction plate (26); the heat conducting plates (26) are symmetrically arranged, and the heat conducting plates (26) are used for conducting heat generated in the operation of the infrared distance measuring sensor (27) to the heat dissipation plate (25); the infrared distance measuring sensor (27) is respectively connected with the electric control cabinet (6) and the data acquisition unit (33) through wires.

7. A limestone feed hopper limit switch for a lime kiln as defined in claim 2, wherein: the junction box (32) is connected with the electric control cabinet (6) through a wire; the data acquisition unit (33) is respectively connected with the junction box (32) and the IC chip (34) through wires, and the data acquisition unit (33) is used for acquiring data information detected by the proximity switch (24) and the infrared distance measurement sensor (27); the IC chip (34) is respectively connected with the junction box (32) and the timer (35) through wires, and the IC chip (34) is used for controlling the limit switch.

8. A limestone feed hopper limit switch for a lime kiln as defined in claim 2, wherein: the timer (35) is connected with the junction box (32) through a wire, and the timer (35) is matched with the IC chip (34) to realize the regular starting of the servo motor (41) at equal interval time; the storage (36) is connected with the data acquisition unit (33) through a data line, and the storage (36) is used for storing data information acquired by the data acquisition unit (33).

9. A limestone feed hopper limit switch for a lime kiln as defined in claim 3, wherein: the servo motor (41) is respectively connected with the electric control cabinet (6) and the IC chip (34) through wires; the rotary plate (42) is in a strip shape; the size of the fixed plate (43) is matched with that of the rotary plate (42), and the fixed plate (43) is detachably connected with the cleaning brush (44); the size of the cleaning hairbrush (44) is matched with that of the fixing plate (43), and the cleaning hairbrush (44) is used for cleaning the upper surface of the transparent composite plate (22).

10. A limestone feed hopper limit switch for a lime kiln as defined in claim 4, wherein: the assembling plate (51) is in a disc shape; the mounting seat (52) and the assembling plate (51) are arranged in an integrated manner; audible-visual annunciator (53) and mount pad (52) are for dismantling the connection, and audible-visual annunciator (53) pass through the wire and link to each other with terminal box (32) and IC chip (34) respectively, and this audible-visual annunciator (53) are used for reporting to the police to the running state of feeding funnel.

Technical Field

The invention belongs to the technical field of lime kilns, and particularly relates to a limit switch of a limestone feeding hopper for a lime kiln.

Background

The steel industry, the calcium carbide industry, the alumina industry, the refractory material industry and other industries are lime consuming households, the lime kiln industry is a high-speed development industry in recent years, and the lime kiln can be divided into the following industries according to fuels: the mixed burning kiln, namely solid fuel, coke powder, coal and the like and gas burning kiln, has a plurality of problems of a limit switch of a limestone feeding hopper used for the lime kiln.

There is the multiple lime stone feeding funnel limit switch who is used for the lime kiln on the market, and the lime stone feeding funnel limit switch who is used for the lime kiln now lacks protective structure, is unfavorable for dispelling the heat operation to limit switch, causes infrared distance measuring sensor to appear the phenomenon of damaging easily, reduces limit switch's life.

Therefore, the invention is very necessary to invent a limit switch of a limestone feeding hopper for a lime kiln.

Disclosure of Invention

In order to solve the technical problems, the invention provides a limit switch of a limestone feeding hopper for a lime kiln, which aims to solve the problems that the existing limit switch of the limestone feeding hopper for the lime kiln is lack of a protection structure, is not beneficial to heat dissipation operation of the limit switch, is easy to cause damage of an external distance measuring sensor and reduces the service life of the limit switch. A limit switch of a limestone feeding hopper for a lime kiln comprises a mounting plate, a limit component, an induction component, a cleaning component, an early warning component and an electric control cabinet, wherein the limit component is mounted on one side above the mounting plate; the induction component is arranged on the other side above the mounting plate; the cleaning assembly is arranged above the mounting plate and is positioned between the limiting assembly and the sensing assembly; the early warning assembly is arranged on one side of the induction assembly, which is far away from the limiting assembly; the electric control cabinet is arranged on one side, which is far away from the induction assembly, above the mounting plate;

the limiting assembly comprises an installation box, a transparent composite plate, an installation column, a proximity switch, a heat dissipation plate, a heat conduction plate and an infrared distance measuring sensor, wherein the installation box is installed on one side above the installation plate; the transparent composite plate is arranged above the installation box; the number of the mounting columns is two, and the mounting columns are mounted above the front side and the rear side of the mounting box; the two proximity switches are arranged above the side, close to each other, of the mounting column; the heat dissipation plates are arranged on the front side and the rear side of the installation box and penetrate into the installation box; the heat conducting plates are arranged on the front side and the rear side in the installation box and are connected with the tail ends of the heat radiating plates; the infrared distance measuring sensor is installed in the middle of the lower portion inside the installation box.

Preferably, the sensing assembly comprises a sensing box, a junction box, a data collector, an IC chip, a timer and a storage, and the sensing box is arranged on one side, away from the mounting box, above the mounting plate; the junction box is arranged above the inside of the induction box; the timer is arranged on one side of the inside of the induction box; the IC chip is arranged on one side close to the timer below the inner part of the induction box; the storage is arranged on one side, which is far away from the timer, below the inner part of the induction box; the data acquisition unit is arranged below the inside of the induction box and is positioned between the IC chip and the storage.

Preferably, the cleaning assembly comprises a servo motor, a rotary plate, a fixed plate and a cleaning brush, the servo motor is arranged above the mounting plate, and the servo motor is positioned between the induction box and the mounting box; one end of the rotary plate is arranged above the servo motor; the fixed plate is arranged below the rotary plate; the cleaning brush is arranged below the fixing plate, and the lower end of the cleaning brush is attached to the upper end of the transparent composite plate.

Preferably, the early warning assembly comprises an assembly plate, a mounting seat and a sound-light alarm, wherein the assembly plate is mounted on one side of the induction box, which is far away from the mounting box; the mounting seat is positioned in the middle of the outer side of the assembling plate and is provided with a mounting groove; and the base of the audible and visual alarm is arranged in the mounting groove of the mounting seat.

Preferably, the mounting plate is of a cuboid structure, a plurality of penetrating mounting holes are formed in the mounting plate, and the mounting plate is used for mounting the limit switch on the feeding hopper; the electric control cabinet is connected with a mains supply through a wire and is used for supplying power to the limit switch.

Preferably, the upper end of the installation box is arranged in an open manner; the size of the transparent composite plate is matched with that of the installation box; the upper end of the mounting column is higher than the upper end of the mounting box; the proximity switch is respectively connected with the electric control cabinet and the data acquisition unit through wires, a detection head of the proximity switch is aligned with the fixed plate, and the proximity switch is used for detecting the distance between the proximity switch and the fixed plate; the heat dissipation plates are uniformly distributed on the front side and the rear side of the installation box and used for dissipating heat conducted by the heat conduction plate; the heat conducting plates are symmetrically arranged and used for conducting heat generated in the operation of the infrared distance measuring sensor to the heat radiating plate; and the infrared distance measuring sensor is respectively connected with the electric control cabinet and the data acquisition unit through wires.

Preferably, the junction box is connected with the electric control cabinet through a wire; the data acquisition unit is respectively connected with the junction box and the IC chip through wires and is used for acquiring data information detected by the proximity switch and the infrared distance measuring sensor; the IC chip is respectively connected with the junction box and the timer through wires and is used for controlling the limit switch.

Preferably, the timer is connected with the junction box through a wire, and the timer is matched with the IC chip to realize the regular starting of the servo motor at equal interval time; the storage is connected with the data acquisition unit through a data line and used for storing data information acquired by the data acquisition unit.

Preferably, the servo motor is respectively connected with the electric control cabinet and the IC chip through wires; the rotary plate is in a strip shape; the size of the fixed plate is matched with that of the rotary plate, and the fixed plate is detachably connected with the cleaning brush; the size of cleaning the brush matches with the fixed plate size, and cleans the brush and be used for cleaning the upper surface of transparent composite sheet.

Preferably, the assembling plate is disc-shaped; the mounting seat and the assembling plate are arranged integrally; audible-visual annunciator and mount pad are for dismantling to be connected, and audible-visual annunciator passes through the wire and links to each other with terminal box and IC chip respectively, and this audible-visual annunciator is used for reporting to the police to the running state of feeding hopper, and audible-visual annunciator has two kinds of audible-visual annunciator modes, and one of them is that the extension sound that reports to the police is carried out to the feeding hopper upper limit, and the other kind is that the short sound that promotes that reports to the police is carried out to the feeding hopper lower limit.

Compared with the prior art, the invention has the following beneficial effects:

1. according to the limiting assembly, when the limiting switch is used, the infrared distance measuring sensor is located in the installation box, the transparent composite plate is convenient for the infrared distance measuring sensor to detect the height of materials in the feeding hopper, normal operation of the infrared distance measuring sensor is guaranteed, the transparent composite plate and the installation box play a role in protecting the infrared distance measuring sensor, the phenomenon that the infrared distance measuring sensor is damaged due to collision is avoided, the heat conducting plate conducts heat generated in the operation process of the infrared distance measuring sensor to the heat radiating plate, the heat radiating plate dissipates the heat conducted by the heat conducting plate, the purpose of radiating the infrared distance measuring sensor is achieved, the phenomenon that the infrared distance measuring sensor is damaged due to overhigh temperature in the installation box is avoided, and the service life of the limiting switch is prolonged.

2. When the cleaning assembly is arranged, when the cleaning assembly is used, the timer is matched with the IC chip to realize the regular starting control of the servo motor at equal intervals, the servo motor drives the rotary plate and the fixed plate to rotate, impurities such as dust and the like attached to the transparent composite plate are cleaned through the cleaning brush, the transparent composite plate is always in a light-transmitting state, and the normal operation of the limiting assembly is ensured.

3. According to the arrangement of the proximity switch, the proximity switch detects the distance between the proximity switch and the fixing plate, when the detected distance reaches a set value, the IC chip controls the servo motor to run in the reverse direction, so that the cleaning brush runs between the proximity switch all the time, the working efficiency of the cleaning assembly is improved, the cleaning brush is located at the position closest to the proximity switch when the servo motor stops running, and the phenomenon that the infrared distance measuring sensor is shielded by the cleaning brush is avoided.

4. According to the arrangement of the induction component, the data acquisition unit acquires data information detected by the proximity switch and the infrared distance measurement sensor, and the data acquisition unit is matched with the IC chip to realize control over the servo motor, so that the cleaning component is ensured to normally operate.

5. According to the arrangement of the early warning assembly, the audible and visual alarm has two sound alarm modes, wherein one sound alarm mode is an elongated sound alarm mode for alarming the upper limit of the feeding hopper, and the other sound alarm mode is a short sound alarm mode for alarming the lower limit of the feeding hopper, so that an operator can conveniently identify the upper limit and the lower limit of the feeding hopper, the mounting seat is detachably connected with the audible and visual alarm, the mounting position of the audible and visual alarm can be conveniently adjusted according to use requirements, and the normal operation of the early warning assembly is ensured.

Drawings

Fig. 1 is a schematic structural view of the present invention.

Fig. 2 is a schematic structural view of the spacing assembly of the present invention.

Fig. 3 is a schematic view of the structure of the inside of the installation case of the present invention.

Fig. 4 is a schematic structural diagram of the sensing assembly of the present invention.

Fig. 5 is a schematic view of the construction of the sweeping assembly of the present invention.

Fig. 6 is a schematic structural diagram of the warning assembly of the present invention.

In the figure:

1-mounting plate, 2-limiting component, 21-mounting box, 22-transparent composite plate, 23-mounting column, 24-proximity switch, 25-heat dissipation plate, 26-heat conduction plate, 27-infrared distance measurement sensor, 3-sensing component, 31-sensing box, 32-junction box, 33-data collector, 34-IC chip, 35-timer, 36-storage, 4-cleaning component, 41-servo motor, 42-rotary plate, 43-fixing plate, 44-cleaning brush, 5-early warning component, 51-assembly plate, 52-mounting seat, 53-audible and visual alarm and 6-electric control cabinet.

Detailed Description

The invention is further described below with reference to the accompanying drawings:

example (b):

as shown in figures 1 to 6

The invention provides a limit switch of a limestone feeding hopper for a lime kiln, which comprises a mounting plate 1, a limit component 2, an induction component 3, a cleaning component 4, an early warning component 5 and an electric control cabinet 6, wherein the limit component 2 is mounted on one side above the mounting plate 1; the induction component 3 is arranged at the other side above the mounting plate 1; the cleaning assembly 4 is arranged above the mounting plate 1, and the cleaning assembly 4 is positioned between the limiting assembly 2 and the induction assembly 3; the early warning assembly 5 is arranged on one side of the induction assembly 3, which is far away from the limiting assembly 2; the electric control cabinet 6 is arranged on one side, which is far away from the induction component 3, above the mounting plate 1; the mounting plate 1 is of a cuboid structure, a plurality of penetrating mounting holes are formed in the mounting plate 1, and the mounting plate 1 is used for mounting the limit switch on the feeding hopper; the electric control cabinet 6 is connected with the mains supply through a wire, and the electric control cabinet 6 is used for supplying power to the limit switch.

In this embodiment, specifically, the limiting component 2 includes an installation box 21, a transparent composite board 22, an installation column 23, a proximity switch 24, a heat dissipation plate 25, a heat conduction plate 26 and an infrared distance measuring sensor 27, and the installation box 21 is installed on one side above the installation plate 1; the transparent composite plate 22 is arranged above the installation box 21; two mounting columns 23 are adopted, and the mounting columns 23 are mounted above the front side and the rear side of the mounting box 21; two proximity switches 24 are adopted, and the proximity switches 24 are arranged above the side, close to each other, of the mounting column 23; a plurality of heat dissipation plates 25 are adopted, the heat dissipation plates 25 are arranged on the front side and the rear side of the installation box 21, and the heat dissipation plates 25 penetrate into the installation box 21; two heat conduction plates 26 are adopted, the heat conduction plates 26 are arranged at the front side and the rear side in the installation box 21, and the heat conduction plates 26 are connected with the tail ends of the heat dissipation plates 25; the infrared distance measuring sensor 27 is arranged at the middle position below the inner part of the installation box 21; the upper end of the installation box 21 is arranged in an open manner; the size of the transparent composite plate 22 is matched with that of the installation box 21; the upper end of the mounting column 23 is higher than the upper end of the mounting box 21; the proximity switch 24 is respectively connected with the electric control cabinet 6 and the data acquisition unit 33 through wires, the detection head of the proximity switch 24 is aligned with the fixing plate 43, and the proximity switch 24 is used for detecting the distance between the proximity switch and the fixing plate 43; the heat dissipation plates 25 are uniformly distributed on the front side and the rear side of the installation box 21, and the heat dissipation plates 25 are used for dissipating heat conducted by the heat conduction plate 26; the heat conducting plates 26 are symmetrically arranged, and the heat conducting plates 26 are used for conducting heat generated in the operation of the infrared distance measuring sensor 27 to the heat radiating plate 25; the infrared distance measuring sensor 27 is respectively connected with the electric control cabinet 6 and the data acquisition unit 33 through wires; when the infrared distance measuring device is used, the infrared distance measuring sensor 27 is positioned in the installation box 21, the transparent composite plate 22 is convenient for the infrared distance measuring sensor 27 to detect the height of materials in the loading hopper, the normal operation of the infrared distance measuring sensor 27 is ensured, the transparent composite plate 22 and the installation box 21 play a role in protecting the infrared distance measuring sensor 27, the phenomenon that the infrared distance measuring sensor 27 is damaged due to collision is avoided, the heat conducting plate 26 conducts heat generated in the operation of the infrared distance measuring sensor 27 to the heat radiating plate 25, the heat radiating plate 25 dissipates the heat conducted by the heat conducting plate 26, the purpose of radiating the infrared distance measuring sensor 27 is achieved, the phenomenon that the infrared distance measuring sensor 27 is damaged due to overhigh temperature in the installation box 21 is avoided, the service life of the limit switch is prolonged, the proximity switch 24 detects the distance between the proximity switch 24 and the fixed plate 43, when the detected distance reaches a set value, the IC chip 34 controls the servo motor 41 to reversely operate, make to clean brush 44 and move all the time between proximity switch 24, improve the work efficiency who cleans subassembly 4, and make servo motor 41 stop the operation, clean brush 44 and be located the position nearest from proximity switch 24, avoid cleaning brush 44 and cause the phenomenon of sheltering from to infrared distance measuring sensor 27.

In this embodiment, specifically, the sensing component 3 includes a sensing box 31, a junction box 32, a data collector 33, an IC chip 34, a timer 35 and a storage 36, where the sensing box 31 is installed on one side of the mounting plate 1 away from the mounting box 21; the junction box 32 is arranged above the inside of the induction box 31; the timer 35 is installed at one side of the inside of the induction box 31; the IC chip 34 is arranged at one side close to the timer 35 at the lower part inside the induction box 31; the storage 36 is arranged on the side which is far away from the timer 35 and below the inner part of the induction box 31; the data collector 33 is arranged below the inside of the induction box 31, and the data collector 33 is positioned between the IC chip 34 and the storage 36; the junction box 32 is connected with the electric control cabinet 6 through a wire; the data acquisition unit 33 is respectively connected with the junction box 32 and the IC chip 34 through wires, and the data acquisition unit 33 is used for acquiring data information detected by the proximity switch 24 and the infrared distance measuring sensor 27; the IC chip 34 is respectively connected with the junction box 32 and the timer 35 through wires, and the IC chip 34 is used for controlling the limit switch; the timer 35 is connected with the junction box 32 through a wire, and the timer 35 is matched with the IC chip 34 to realize the regular starting of the servo motor 41 at equal intervals; the storage 36 is connected with the data collector 33 through a data line, and the storage 36 is used for storing the data information collected by the data collector 33; the data acquisition unit 33 acquires data information detected by the proximity switch 24 and the infrared distance measuring sensor 27, and is matched with the IC chip 34 to control the servo motor 41, so that the cleaning assembly 4 is ensured to normally operate.

In this embodiment, specifically, the cleaning assembly 4 includes a servo motor 41, a rotary plate 42, a fixed plate 43 and a cleaning brush 44, the servo motor 41 is installed above the installation plate 1, and the servo motor 41 is located between the induction box 31 and the installation box 21; one end of the rotary plate 42 is installed above the servo motor 41; the fixed plate 43 is arranged below the rotary plate 42; the cleaning brush 44 is arranged below the fixing plate 43, and the lower end of the cleaning brush 44 is attached to the upper end of the transparent composite plate 22; the servo motor 41 is respectively connected with the electric control cabinet 6 and the IC chip 34 through leads; the rotary plate 42 is in a strip shape; the size of the fixed plate 43 is matched with that of the rotary plate 42, and the fixed plate 43 is detachably connected with the cleaning brush 44; the size of the cleaning brush 44 is matched with that of the fixing plate 43, and the cleaning brush 44 is used for cleaning the upper surface of the transparent composite plate 22; during the use, timer 35 cooperation IC chip 34 realizes regularly starting control to servo motor 41's equidistant period, and servo motor 41 drives spiral plate 42 and fixed plate 43 and rotates, cleans impurity such as the dust that will adhere to on transparent composite sheet 22 through cleaning brush 44 and falls, makes transparent composite sheet 22 be in the printing opacity state all the time, guarantees spacing subassembly 2 normal operating.

In this embodiment, specifically, the early warning assembly 5 includes an assembly plate 51, a mounting seat 52, and an audible and visual alarm 53, where the assembly plate 51 is installed on a side of the induction box 31 away from the mounting box 21; the mounting seat 52 is located in the middle of the outer side of the assembling plate 51, and the mounting seat 52 is provided with a mounting groove; the base of the audible and visual alarm 53 is arranged in the mounting groove of the mounting seat 52; the assembly plate 51 is disc-shaped; the mounting seat 52 and the assembling plate 51 are integrally arranged; audible-visual annunciator 53 is connected for dismantling with mount pad 52, and audible-visual annunciator 53 passes through the wire and links to each other with terminal box 32 and IC chip 34 respectively, this audible-visual annunciator 53 is used for reporting to the police to the running state of feeding hopper, and audible-visual annunciator 53 has two kinds of audible-visual annunciator modes, one of them is that the sound of lengthening that reports to the police is carried out to the feeding hopper upper limit, another kind is that the short sound of promoting that reports to the police is carried out to the feeding hopper lower limit and is reported to the police, the operating personnel of being convenient for discerns the upper limit and the lower limit of feeding hopper, mount pad 52 adopts to dismantle with audible-visual annunciator 53 and is connected, be convenient for carry out audible-visual annunciator 53 mounted position's adjustment according to the use needs, guarantee early warning subassembly 5 normal operating.

Principle of operation

In the invention, when in use, the limit switch is arranged at a proper position of the feeding hopper through the mounting plate 1, the electric control cabinet 6 is connected with commercial power to supply power to the limit switch, the infrared distance measuring sensor 27 is positioned in the mounting box 21, the transparent composite plate 22 is convenient for the infrared distance measuring sensor 27 to detect the height of materials in the feeding hopper, the normal operation of the infrared distance measuring sensor 27 is ensured, the transparent composite plate 22 and the mounting box 21 play a role in protecting the infrared distance measuring sensor 27 and avoid the phenomenon that the infrared distance measuring sensor 27 is damaged due to collision, the heat conducting plate 26 conducts heat generated in the operation of the infrared distance measuring sensor 27 to the heat radiating plate 25, the heat radiating plate 25 dissipates the heat conducted by the heat conducting plate 26, the purpose of heat radiation of the infrared distance measuring sensor 27 is achieved, the phenomenon that the infrared distance measuring sensor 27 is damaged due to overhigh temperature in the mounting box 21 is avoided, and the service life of the limit switch is prolonged, the audible and visual alarm 53 has two audible and visual alarm modes, one is an elongated sound alarm for alarming the upper limit of the feeding hopper, the other is a short sound-promoting alarm for alarming the lower limit of the feeding hopper, so that an operator can conveniently identify the upper limit and the lower limit of the feeding hopper, the mounting seat 52 is detachably connected with the audible and visual alarm 53, so that the mounting position of the audible and visual alarm 53 can be conveniently adjusted according to the use requirement, the normal operation of the early warning assembly 5 is ensured, the timer 35 is matched with the IC chip 34 to realize the regular starting control of the servo motor 41 at equal interval time, the servo motor 41 drives the rotary plate 42 and the fixed plate 43 to rotate, impurities such as dust and the like attached to the transparent composite plate 22 are cleaned by the cleaning brush 44, the transparent composite plate 22 is always in a light transmission state, the normal operation of the limiting assembly 2 is ensured, and the proximity switch 24 detects the distance between the proximity switch 24 and the fixed plate 43, when the detected distance reaches the set value, the IC chip 34 controls the servo motor 41 to run reversely, so that the cleaning brush 44 runs between the proximity switches 24 all the time, the working efficiency of the cleaning assembly 4 is improved, and when the servo motor 41 stops running, the cleaning brush 44 is located at the position nearest to the proximity switches 24, the phenomenon that the cleaning brush 44 shields the infrared distance measuring sensor 27 is avoided, the data acquisition unit 33 acquires the data information detected by the proximity switches 24 and the infrared distance measuring sensor 27, the IC chip 34 is matched to realize the control of the servo motor 41, and the normal running of the cleaning assembly 4 is ensured.

The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention to achieve the above technical effects.