CN114671220A - A kind of air-water knife online device for cleaning belt conveyor, application and method for cleaning belt conveyor - Google Patents

Abstract

The invention discloses an air-water knife online device for cleaning a belt conveyor, application and a method for cleaning the belt conveyor, wherein the device comprises a support and an air-water knife, the support is detachably arranged on the belt conveyor, the air-water knife is arranged on the support, and a knife edge of the air-water knife is over against a conveyor belt; the gas-water cutter comprises an upper cavity plate, a lower cavity plate, a C-shaped sealing gasket and a water inlet pipe head, wherein the upper cavity plate is fixedly connected with the lower cavity plate, a cavity is formed inside the upper cavity plate, the C-shaped sealing gasket is arranged in a C-shaped sealing groove of the upper cavity plate, and a cutter edge is formed on the unsealed side of the C-shaped sealing groove; one end of the water inlet pipe head is connected to a cavity formed by the upper chamber plate and the lower chamber plate; the other end of the water inlet pipe head is respectively connected with a compressed air source and a tap water source through a connecting pipeline, and an electromagnetic valve and a one-way valve are installed on the connecting pipeline of the compressed air source; an electromagnetic valve is arranged on a connecting pipeline of a tap water source. The cleaning and maintenance of the belt conveyor are automatically completed, the labor intensity of workers is reduced, and the maintenance efficiency is improved.

Description

A kind of air-water knife online device for cleaning belt conveyor, application and method for cleaning belt conveyor

technical field

The invention relates to the field of cigarette shredding processing equipment, in particular to an air-water jet online device for cleaning a belt conveyor, its application and a method for cleaning the belt conveyor.

Background technique

In the process of cigarette shredding, the conveying equipment is widely used. In addition to conveying materials, it can also cooperate with various devices to complete the processes of tobacco sorting, cooling, loosening, impurity removal, and quantitative feeding. Among them, the belt conveyor occupies the largest proportion in the conveying equipment in the silk making process. It can be used for horizontal conveying or conveying at a certain inclination angle. It has the characteristics of large flow conveying capacity, stable operation, small crushing and low noise. Its structure mainly includes a frame, a conveyor belt, a belt driving roller, a belt driven roller, a tensioning device, a transmission device and a discharge cover, etc.

In the daily production site, when the cigarettes are produced and the brand is changed, the belt surface of the belt conveyor needs to be cleaned and maintained according to the process standards. When the production of one cigarette brand is completed, that is, after the materials on all equipment lines of the process enter the storage cabinet of the downstream process, the operator will switch the control mode of the automatic online operation equipment to the manual stand-alone state, and stop and maintain the equipment one by one. Among them, the cleaning and maintenance of the belt conveyor is an important part of the maintenance work of changing the brand. The operator uses a special plastic pipe to connect the compressed air with positive pressure from the compressed air interface, introduces it into the rear end of the belt conveyor, and adjusts the pressure of the blowing compressed air to the range of 4bar, one by one from the rear end to the front end Clean, and finally collect the smoke dust in the ash collecting tray near the end of the passive roller to complete the cleaning and maintenance process of the belt conveyor. After the daily production plan is completed, the belt conveyor will be deeply cleaned and maintained. The operator will access clean water to clean the surface of the conveyor belt, and then blow it with compressed air to complete the deep cleaning and maintenance of the belt conveyor. process.

During the cleaning and maintenance process of changing the cigarette brand, the operator is generally responsible for the cleaning and maintenance of multiple belt conveyors; after the daily production is completed, the belts need to be deeply cleaned and maintained. In this cleaning and maintenance process, it takes a lot of time (20min-30min), manpower and supporting facilities (maintenance tools and platforms, etc.); at the same time, during the process of people going up and down the stairs, the splash of clean water will cause the stairs to become wet. Slippery, there is a safety hazard.

SUMMARY OF THE INVENTION

The present invention overcomes the deficiencies of the prior art, and provides an embodiment of an air-water knife online device for cleaning belt conveyors, which is used to solve the problems of low efficiency of the current belt conveyor cleaning and maintenance methods, the use of many supporting facilities, and the maintenance process of the belt conveyor. existing security risks.

In order to solve the above-mentioned technical problems, the present invention adopts the following technical solutions:

An air-water knife online device for cleaning a belt conveyor, comprising a bracket and an air-water knife, the bracket is detachably installed on the belt conveyor, the air-water knife is installed on the bracket, and the knife edge of the air-water knife is facing Conveyor belt; the air-water jet includes an upper chamber plate, a lower chamber plate, a C-shaped gasket, and a water inlet pipe head, the upper chamber plate and the lower chamber plate are fixedly connected, and a chamber is formed inside, and the C The type sealing gasket is installed in the C-shaped sealing groove of the upper chamber plate, and the knife edge is formed on the unsealed side of the C-shaped sealing groove; one end of the water inlet pipe head is connected to the upper chamber plate and the lower chamber plate. In the formed chamber; the other end of the water inlet pipe head is connected to the compressed air source and the tap water source respectively through the connecting pipeline, and a solenoid valve and a one-way valve are installed on the connecting pipeline of the compressed air source; Install a solenoid valve on the connection line to the source.

The upper edge and both ends of the upper chamber plate and the lower chamber plate are provided with screw holes, and the upper chamber plate and the lower chamber plate are fixedly connected by screws.

The water inlet pipe head has a plurality of evenly spaced ports, and the lower chamber plate has connection holes corresponding to the ports.

The water inlet pipe head has 5 interfaces, each interface is matched with a live joint, and the live joint is sealed with a mirror surface and is connected with a wire joint; each interface corresponding to the water inlet pipe head on the lower chamber plate is provided with a pipeline interface, The wire connector is connected to the tubing interface.

The support includes a support rod, the two ends of the support rod are respectively sleeved with air-water knife seats, the two ends of the support rod are respectively sleeved with clamping seats, and the clamping seats are located outside the air-water knife seat; the The air-water knife is installed on the air-water knife seat, and the clamping seat clamps the bracket to the baffles on both sides of the belt conveyor.

The clamping nut is welded in the middle of the lower part of the clamping seat, and the clamping seat is provided with two guide holes, and the two guiding holes are respectively located on both sides of the clamping nut; the two ends of a clamping plate are welded with guide rods. , the guide rod is inserted into the two guide holes on the clamping seat; the center of the clamping plate is welded with a pin shaft baffle, a handle hole and a pin shaft hole are opened at both ends of a clamping screw, and a handle is installed in the In the handle hole, a pin shaft is installed in the pin shaft hole, and the pin shaft is installed in the pin shaft baffle plate to complete the clamping of the clamping plate.

The inner chamber formed by the combination of the upper chamber plate and the lower chamber plate is a rectangular chamber, and the length of the knife edge is equal to the width of the conveyor belt.

The air-water knife online device of the cleaning belt conveyor further comprises a PLC control system, and the PLC control system is connected with the solenoid valve and the one-way valve.

The compressed air source, the tap water source and the water inlet pipe head are connected through a three-way valve.

The belt conveyor has a driving roller and a driven roller, which are connected by a conveyor belt and located at two ends of the conveyor belt respectively, and the air-water jet is installed above the driven roller of the belt conveyor.

The application method of the air-water knife online device for cleaning the belt conveyor is to install it above the driven roller of the belt conveyor to clean the surface of the conveyor belt.

The use method of the above-mentioned air-water knife online device for cleaning the belt conveyor is as follows:

Step 1: When the production is in the state of online automatic tailing, after a period of delay, open the cleaning water solenoid valve to clean the surface of the conveyor belt;

Step 2: After the cleaning water solenoid valve is opened for a period of time, close it, and open the compressed air solenoid valve to clean the surface of the conveyor belt;

Step 3: After the compressed air solenoid valve is opened for a period of time, it is closed, and the production system state is converted to an online automatic standby state, and the debris in the ash receiving tray of the cleaning belt conveyor is removed to complete the cleaning and maintenance of the conveyor belt; this process Start the production of the next brand.

The duration of opening the solenoid valve in each step is adjusted according to the length of the belt conveyor. In step one, the duration of the delay for a period of time is also adjusted according to the length of the belt conveyor, so that the tailings on the conveyor belt can be completely removed. It is transported to the next process without contact with the air and water sprayed by the air-water jet.

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

(1) The belt conveyor is automatically cleaned when the tailing material ends, and it does not need to stop its operation, which avoids the time for manual installation of cleaning tools and maintenance execution, saves a lot of maintenance time, and increases maintenance efficiency by 5 times; (2) ) According to the technical requirements of brand change maintenance and deep cleaning and maintenance, one-click selection of compressed air cleaning and maintenance or the combination of cleaning water and compressed air cleaning; (3) to avoid personnel in the process of going up and down the stairs, outside (4) The cleaning and maintenance of the belt conveyor is automatically completed, which reduces the labor intensity of workers.

Description of drawings

Figure 1 is a schematic diagram of the outline structure of the belt conveyor.

FIG. 2 is an installation schematic diagram of an embodiment of the present invention.

FIG. 3 is a schematic structural diagram of an air-water jet according to an embodiment of the present invention.

4 is a cross-sectional view of an air-water jet according to an embodiment of the present invention.

FIG. 5 is a schematic diagram of a stent structure according to an embodiment of the present invention.

FIG. 6 is a schematic diagram of a pipeline according to an embodiment of the present invention.

FIG. 7 is a control flow chart of an embodiment of the present invention.

In the figure, the parts represented by each serial number are as follows:

1. Unloading hood; 2. Driving roller; 3. Motor; 4. Baffle plate; 5. Supporting roller; 6. Conveyor belt; 7. Supporting plate; 8. Driven roller; Rack; 11. Bracket; 12. Air-water jet; 13. Fixing screw hole of chamber; 14. C-shaped gasket; 15. Union; 16. Upper chamber plate; 17. Lower chamber plate; 18. Chamber ;19, screw; 20, wire joint; 21, C-shaped sealing groove; 22, air-water knife; 23, mirror seal; 24, water inlet pipe head; 25, pipeline interface; 26, bracket rod; 27, air-water knife seat; 28, bracket hole; 29, air-water jet installation slot; 30, clamping seat; 31, guide hole; 32, clamping nut; 33, clamping plate; 34, guide rod; 35, pin hole; 36, handle hole; 37, handle; 38, clamping screw; 39, pin shaft; 40, pin shaft baffle; 41, compressed air source; 42, tap water source; 43, solenoid valve; 44, one-way valve; 45 ,Three-way valve.

Detailed ways

In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention.

As shown in Figure 1: an air-water knife online device for cleaning belt conveyors, which is detachably installed above the belt at the driven roller end of the belt conveyor, and the knife edge of the air-water knife is facing the conveyor belt; The conveyor has a discharge hood 1, a driving roller 2, a motor 3, a baffle 4, an idler 5, a conveyor belt 6, a support plate 7, a driven roller 8, a tensioning device 9, and a frame 10; the discharge hood is located in the belt The discharge end of the belt conveyor, the driving roller is also located at the discharge end of the belt conveyor, the motor provides power for the driving roller, the baffles are installed on the left and right sides of the belt conveyor, and the driven roller and the tensioning device are installed in At the feeding end of the belt conveyor, the conveyor belt is installed on the driving roller and the driven roller, and is tensioned by the tensioning device; the belt conveyor is installed with a supporting plate and a supporting roller, which supports its structure. The structure is mounted on the rack.

As shown in Figure 2, the air-water knife online device for cleaning the belt conveyor includes an air-water knife 12 and a bracket 11. The air-water knife 12 is installed in the air-water knife installation groove on the air-water knife seat, and the bracket 11 uses a clamping plate It is fixed on the baffle 4 of the belt conveyor, and the air-water knife edge 22 cleans the conveyor belt 6 .

As shown in Figures 3 and 4, the air-water jet online device for cleaning the belt conveyor includes a bracket and an air-water jet, the air-water jet is installed on the bracket, and the air-water jet includes an upper chamber plate 16, a lower chamber plate 17, C-shaped gasket 14 , water inlet pipe head 24 , the upper edge and both ends of the upper chamber plate and the lower chamber plate are provided with chamber fixing screw holes 13 , and the upper chamber plate and the lower chamber plate are fixed by screws 19 connect. A chamber 18 is formed inside, and the inner chamber 18 formed by the combination of the upper chamber plate and the lower chamber plate is a rectangular chamber. The C-shaped gasket is installed in the C-shaped sealing groove 21 of the upper chamber plate, and an air-water knife edge 22 is formed on the unsealed side of the C-shaped sealing groove, and the length of the knife edge is equal to the width of the conveyor belt. The water inlet pipe head has a plurality of evenly spaced ports, and the lower chamber plate has connection holes corresponding to the ports of the water inlet pipe head. One end of the water inlet pipe head having a plurality of ports is connected to the chamber 18 formed by the upper chamber plate and the lower chamber plate. Preferably, five ports are set on the water inlet pipe head, each port is matched with a joint 15, and the joint is connected with the wire joint 20 by the mirror seal 23; the wire joint 20 is welded to the pipeline interface of the lower chamber plate 17 On the top, the water inlet pipe head passes through the union, and uses the mirror seal to complete the connection with the wire joint. A pipeline interface 25 is provided on the lower chamber plate 17 corresponding to each interface of the water inlet pipe head, and the wire joint 20 is connected to the pipeline interface 25 . As shown in FIG. 6 , the other end of the water inlet pipe head is connected to the compressed air source 41 and the tap water source 42 respectively through the connecting pipeline. Install the solenoid valve 43 and the one-way valve 44 on the connecting pipeline of the compressed air source; install the electromagnetic valve on the connecting pipeline of the tap water source. The air-water knife online device of the cleaning belt conveyor can be controlled by the PLC control system. The PLC control system is connected with the solenoid valve and the one-way valve to control the connection between the air circuit and the water circuit. The PLC control system controls the air-water jet online device of the cleaning belt conveyor to perform the following tasks:

Step 1: When the production is in the state of online automatic tailing, after a period of delay, open the cleaning water solenoid valve to clean the surface of the conveyor belt;

Step 2: After the cleaning water solenoid valve is opened for a period of time, close it, and open the compressed air solenoid valve to clean the surface of the conveyor belt;

Step 3: After the compressed air solenoid valve is opened for a period of time, it is closed, and the production system state is converted to an online automatic standby state, and the debris in the ash receiving tray of the cleaning belt conveyor is removed to complete the cleaning and maintenance of the conveyor belt; this process Start the production of the next brand.

As shown in FIG. 5 , the bracket can be disassembled. The bracket 11 includes a bracket rod 26. The two ends of the bracket rod are respectively sleeved with air-water knife seats 27, and the two ends of the bracket rod are respectively sleeved with clamping seats 30. The clamping seats are located at On the outside of the air-water knife seat, at each end of the bracket rod, there is an air-water knife seat and a clamping seat. The upper end of the air-water knife seat has a bracket hole 28, and the lower end has an air-water knife installation slot 29. The air-water knife seat 27 is connected to the bracket rod 26 through the bracket hole 28, and is fixed on the bracket rod with screws and screw holes. It is installed on the air-water knife installation groove 29 of the air-water knife seat, and is fixed on the bracket through screws and screw holes.

The upper end of the clamping seat 30 has two bracket holes 28, and the clamping seat is connected to the bracket rod through the bracket holes. The clamping seat clamps the bracket to the baffles on both sides of the belt conveyor. The clamping nut 32 is welded in the middle of the lower part of the clamping seat. There are two guide holes 31 on the clamping seat. The two guiding holes are respectively located on the left and right sides of the clamping nut. The three are on the same level; both ends of a clamping plate 33 are welded with guide rods 34, the guide rods are inserted into the two guide holes 31 on the clamping seat, and the guide rods cooperate with the two guide holes on the clamping plate to prevent The clamping plate moves; the center of the clamping plate is welded with a pin shaft baffle 40. A handle hole 36 is opened at one end of a clamping screw 38, and a pin shaft hole 35 is opened at the other end. A handle 37 is installed in the handle hole, a pin shaft 39 is installed in the pin shaft hole, and the pin shaft 39 is installed in the pin shaft. In the baffle 40, the above components are used together to realize the fixation and removal of the bracket on the belt conveyor. The clamping nut 32 cooperates with the clamping screw 38, so that the clamping plate and the clamping seat are fixed on the baffle of the belt conveyor. When disassembling the air-water knife online device for cleaning the belt conveyor, first remove the pin, and then rotate the handle to release the clamping plate from the clamping seat, and then the entire device can be removed from the belt conveyor .

As shown in FIG. 6 , the cleaning pipeline is composed of a compressed air pipeline and a tap water pipeline. The two pipelines are connected to the compressed air source 41 and the tap water source 42 respectively, and finally the three-way valve 45 is combined into one and connected to the air-water knife 12 The main components include two solenoid valves 43, a one-way valve 44, the air-water knife 12, the air-water knife 12 is located at the end of the driven roller 8, and the moving direction of the conveyor belt 6 is shown by the arrow, from the The driving roller 8 moves toward the driving roller 2 .

As shown in Figure 7, the PLC control system judges whether the tailing state is reached during the production and operation process. If the tailing state is reached, after a delay for a period of time, the cleaning system will run. When cleaning and maintaining the conveyor belt, first open the solenoid valve on the tap water pipeline, and clean the surface of the conveyor belt with an air-water knife. The one-way valve prevents the tap water from entering the compressed air source system, open the solenoid valve on the compressed air pipeline, clean the surface of the conveyor belt through the air-water knife, delay for a period of time (that is, clean and blow for a period of time), and close the compressed air pipe The solenoid valve on the road completes the cleaning of the conveyor belt surface.

Control example: The PLC control system judges whether the tailing state is reached during the production and running process. If the tailing state is reached, after a delay of 600s, the cleaning system runs. When cleaning and maintaining the conveyor belt, first open the solenoid valve on the tap water pipeline, clean the surface of the conveyor belt with an air-water knife, delay 120s, and close the solenoid valve on the tap water pipeline; the one-way valve on the compressed air pipeline prevents tap water from entering the compressed air. For the air source system, open the solenoid valve on the compressed air pipeline, clean the surface of the conveyor belt with an air-water knife, delay 240s, close the solenoid valve on the compressed air pipeline, and complete the cleaning of the conveyor belt surface.

The air-water jet online device is installed above the driven roller conveyor belt of the belt conveyor, which realizes automatic online cleaning and maintenance of the conveyor belt surface of the belt conveyor and reduces the labor intensity of workers; Automatic cleaning without stopping its operation, avoiding manual installation of cleaning tools, saving a lot of maintenance time, and improving maintenance efficiency by 5 times; realizing the process requirements of maintenance and deep cleaning and maintenance according to the brand, one-click selection and compression Air blowing maintenance or the combination of cleaning water and compressed air blowing; also avoids the safety hazard caused by the slippery ladder caused by the splash of cleaning water during manual maintenance.

Although the present invention has been described herein with reference to illustrative embodiments thereof, it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the scope of the principles disclosed herein and within the spirit. More particularly, various variations and modifications may be made to the component parts and/or arrangements of the subject combination arrangement within the scope of the present disclosure. In addition to variations and modifications in the component parts and/or arrangements, other uses will also be apparent to those skilled in the art.

Claims (10)

1. The online device for cleaning the air water knife of the belt conveyor is characterized by comprising a support and the air water knife, wherein the support is detachably arranged on the belt conveyor, the air water knife is arranged on the support, and the knife edge of the air water knife is over against the conveyor belt; the gas-water cutter comprises an upper chamber plate, a lower chamber plate, a C-shaped sealing gasket and a water inlet pipe head, wherein the upper chamber plate is fixedly connected with the lower chamber plate, a chamber is formed inside the upper chamber plate, the C-shaped sealing gasket is arranged in a C-shaped sealing groove of the upper chamber plate, and a knife edge is formed on the unsealed side of the C-shaped sealing groove; one end of the water inlet pipe head is connected to a cavity formed by the upper chamber plate and the lower chamber plate; the other end of the water inlet pipe head is respectively connected with a compressed air source and a tap water source through a connecting pipeline, and an electromagnetic valve and a one-way valve are installed on the connecting pipeline of the compressed air source; and an electromagnetic valve is arranged on the connecting pipeline of the tap water source.

2. The online air-water knife device for cleaning the belt conveyor of claim 1, wherein the upper edge and two ends of the upper chamber plate and the lower chamber plate are provided with screw holes, and the upper chamber plate and the lower chamber plate are fixedly connected through screws.

3. The online air-water knife device for cleaning the belt conveyor as claimed in claim 1, wherein the water inlet pipe head is provided with a plurality of uniformly spaced interfaces, and the lower chamber plate is provided with connecting holes corresponding to the interfaces.

4. The air-water knife online device for cleaning the belt conveyor as claimed in claim 3, wherein the water inlet pipe head is provided with 5 interfaces, each interface is matched with a movable joint, and the movable joints are connected with the wire joints by mirror surface sealing; each connector corresponding to the water inlet pipe head on the lower cavity plate is provided with a pipeline connector, and the wire connector is connected to the pipeline connector.

5. The online air-water knife device for cleaning the belt conveyor according to claim 1, wherein the support comprises a support rod, two ends of the support rod are respectively sleeved with an air-water knife holder, two ends of the support rod are respectively sleeved with a clamping seat, and the clamping seats are positioned outside the air-water knife holder; the air-water cutter is arranged on the air-water cutter seat, and the clamping seat clamps the bracket to the baffle plates on two sides of the belt conveyor; a clamping nut is welded in the middle of the lower part of the clamping seat, two guide holes are formed in the clamping seat, and the two guide holes are respectively positioned on two sides of the clamping nut; two ends of a clamping plate are welded with guide rods, and the guide rods are inserted into two guide holes on the clamping seat; the clamping plate is characterized in that a pin shaft baffle is welded at the center of the clamping plate, a handle hole and a pin shaft hole are respectively formed in two ends of a clamping screw, a handle is installed in the handle hole, a pin shaft is installed in the pin shaft hole, and the pin shaft is installed in the pin shaft baffle to complete clamping of the clamping plate.

6. The online air-water knife device for cleaning the belt conveyor of claim 1, wherein the inner chamber formed by the combination of the upper chamber plate and the lower chamber plate is a rectangular chamber, and the length of the knife edge is equal to the width of the conveyor belt.

7. The online air-water knife device for cleaning the belt conveyor according to claim 1, further comprising a PLC control system connected with the solenoid valve and the check valve; the compressed air source and the tap water source are connected with the water inlet pipe head through a three-way valve.

8. The air knife online device for cleaning the belt conveyor according to claim 1, wherein the belt conveyor has a driving roller and a driven roller which are connected by a conveyor belt and are respectively located at both ends of the conveyor belt, and the air knife is installed above the driven roller of the belt conveyor.

9. Use of an air water knife in-line device for cleaning a belt conveyor according to any of claims 1 to 8, characterized in that it is mounted above the driven rollers of the belt conveyor to clean the belt surface.

10. A method of cleaning a belt conveyor using an air water knife in-line apparatus for cleaning a belt conveyor according to any one of claims 1 to 8, comprising the steps of:

The method comprises the following steps: when the production is in an online automatic tailing state, delaying for a period of time, and opening a cleaning water electromagnetic valve to clean the surface of the conveyor belt;

step two: after the cleaning water electromagnetic valve is opened for a period of time, the cleaning water electromagnetic valve is closed, and the compressed air electromagnetic valve is opened to clean and blow the surface of the conveying belt;

step three: and after the compressed air electromagnetic valve is opened for a period of time, the compressed air electromagnetic valve is closed, the state of the production system is converted into an online automatic standby state, sundries in an ash receiving disc of the cleaning belt conveyor are removed, and the cleaning and maintenance of the conveying belt are completed.

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