CN113830562A - Device for quickly adding and subtracting pearlife and use method thereof - Google Patents
Device for quickly adding and subtracting pearlife and use method thereof Download PDFInfo
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- CN113830562A CN113830562A CN202111113812.3A CN202111113812A CN113830562A CN 113830562 A CN113830562 A CN 113830562A CN 202111113812 A CN202111113812 A CN 202111113812A CN 113830562 A CN113830562 A CN 113830562A
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- sand
- pearlife
- cold box
- bag
- box
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/04—Conveying materials in bulk pneumatically through pipes or tubes; Air slides
- B65G53/06—Gas pressure systems operating without fluidisation of the materials
- B65G53/10—Gas pressure systems operating without fluidisation of the materials with pneumatic injection of the materials by the propelling gas
- B65G53/14—Gas pressure systems operating without fluidisation of the materials with pneumatic injection of the materials by the propelling gas the gas flow inducing feed of the materials by suction effect
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/16—Large containers flexible
- B65D88/1612—Flexible intermediate bulk containers [FIBC]
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65D—CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES
- B65D88/00—Large containers
- B65D88/16—Large containers flexible
- B65D88/1612—Flexible intermediate bulk containers [FIBC]
- B65D88/1675—Lifting fittings
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G53/00—Conveying materials in bulk through troughs, pipes or tubes by floating the materials or by flow of gas, liquid or foam
- B65G53/34—Details
- B65G53/40—Feeding or discharging devices
- B65G53/50—Pneumatic devices
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G65/00—Loading or unloading
- B65G65/30—Methods or devices for filling or emptying bunkers, hoppers, tanks, or like containers, of interest apart from their use in particular chemical or physical processes or their application in particular machines, e.g. not covered by a single other subclass
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
- B65G2201/04—Bulk
- B65G2201/042—Granular material
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/20—Recycling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Packages (AREA)
- Air Transport Of Granular Materials (AREA)
Abstract
The invention provides a device for quickly adding and subtracting pearlife and a using method thereof, and the device structurally comprises a cold box, wherein the top of the cold box is provided with a sand adding port, the bottom of the cold box is provided with a sand scraping port, the side wall of the cold box is provided with an access door, a collecting box is arranged close to the sand adding port, one end of a loading device is positioned in the collecting box, the other end of the loading device is connected with a transfer bag, one end of a Venturi tube is positioned in the collecting tube, and the other end of the Venturi tube is connected with a positive pressure end of a vacuum pump; the top of collecting box is equipped with the sack cleaner, and the entry of sack cleaner has the suction nozzle through the hose connection, and the export of sack cleaner is connected with the negative pressure end of vacuum pump, is equipped with the atmospheric valve on the connecting pipeline between sack cleaner and the vacuum pump, and the one end of clearance pipeline is equipped with the spray gun, and the other end is connected with the air compressor machine. The invention realizes the quick removal and filling of the pearlife in the cold box device, solves the technical problem of cleaning the residual pearlife, saves the overhaul time and reduces the environmental pollution.
Description
Technical Field
The invention relates to the technical field of cold box device maintenance in petrochemical industry and air separation industry, in particular to a device for quickly adding and subtracting pearlife and a using method thereof.
Background
The pearlite sand is a heat insulating material, and is filled in cold box devices of petrochemical industry, air separation and the like, and is used for heat insulation of the cold box. When the cold box is overhauled, the filled pearlife needs to be moved out, and after the overhaul is finished, the pearlife needs to be backfilled. The pearl sand is roughly divided into three steps: sand raking, box cleaning and filling, wherein a sand raking opening of a cold box is opened, and pearl sand is discharged; then cleaning the pearlife remained at each position in the cold box; and finally, after the overhaul is finished, backfilling the discharged pearlife into the cold box from the sand adding port at the upper part. The steps of adding and subtracting the pearlife are dispersed in process, complex in operation links and too many in maintainers, and cannot be completed by one set of device and method. The existing added or subtracted pearlife has low efficiency, high risk and great influence on the environment.
Meanwhile, the volume of the pearlite sand in the cold box is huge, and the pearlite sand in the cold box can only be transferred into a ton bag through various existing sand raking methods, and the volume of the ton bag is about one cubic meter. For thousands of cubic meters of pearlife, the efficiency of the processes of sand scraping, transportation, storage, filling and the like are required to be improved. Moreover, the temperature in the cold box is low, so that the cooling liquid is easy to explode when leaking, so-called 'sand explosion' accidents occur, and the danger of operators in front of a sand raking opening of the cold box is high. In the existing sand raking method, a large number of operators are required before a sand raking opening, and the accidents of group death and group injury are frequent. The equipment in the cold box is relatively dense, and the pearly-lustre sand attached to the surface of the equipment needs to be removed before the equipment is overhauled. The problems of environment and safety are difficult to solve in manual cleaning, water washing and compressed air blowing. In a word, the prior art has lower sand raking efficiency and higher danger; the box cleaning operation has large influence on the surrounding environment and low efficiency; the filling process is less efficient.
Disclosure of Invention
The invention aims to provide a device for quickly adding and subtracting pearlife and a using method thereof, which realize quick removal and filling of the pearlife in a cold box device in the industries of petrochemical industry, air separation and the like, solve the technical problem of cleaning residual pearlife in a cold box, save the overhaul time, reduce the environmental pollution and improve the overhaul safety of the cold box.
The invention provides a device for quickly adding and reducing pearlife, which comprises a cold box, a collecting box, a loading device and a cleaning pipeline, wherein a sand adding port is formed in the top of the cold box, a sand scraping port is formed in the bottom of the cold box, an access door is arranged on the side wall of the cold box, the collecting box is arranged close to the sand adding port, one end of the loading device is positioned in the collecting box, the other end of the loading device is connected with a transfer bag, the loading device comprises a collecting pipe and a Venturi tube, one end of the Venturi tube is positioned in the collecting pipe, and the other end of the Venturi tube is connected with a positive pressure end of a vacuum pump;
the top of collecting box is equipped with the sack cleaner, the entry of sack cleaner has the suction nozzle through the hose connection, the export of sack cleaner with the negative pressure end of vacuum pump is connected, the sack cleaner with be equipped with the atmospheric valve on the connecting pipeline between the vacuum pump, the one end of clearance pipeline is equipped with the spray gun, the other end and the air compressor machine of clearance pipeline are connected.
Further, venturi is located one end in the collecting tube is equipped with the reducing, be connected with the nozzle on the reducing, the internal diameter of nozzle does 1/3 of collecting tube internal diameter, venturi is equipped with flow control valve.
Furthermore, the lower part of the transfer bag is provided with a hoisting net, the edge of the hoisting net is provided with a plurality of hoisting points, the lower part of the transfer bag is provided with a discharge hole, and the diameter of the discharge hole is not larger than the inner diameter of the sand adding hole.
The lifting device is characterized by further comprising a lifting beam, wherein a plurality of lifting belts are arranged on the lifting beam, one end of the lifting is connected with the lifting beam, the other end of each lifting belt is connected with the lifting point, and the length of each lifting belt is gradually increased from two ends to the center.
Further, the transport bag top height with the length of hoist and mount area adapts to each other, the top height of transporting steadilys decrease from both ends to the centre, the transport bag adopts high gas permeability cloth to make up and forms, the vertical direction of transport bag and the breaking strength of horizontal direction are greater than 1000 newtons, the every square meter per second of transport bag is ventilative and is greater than 1000 liters.
Further, the height of the collecting box is larger than that of the sand raking opening.
Further, the angle between the collecting pipe and the ground is less than 75 degrees.
Furthermore, a plurality of access doors are arranged on the side wall of the cold box along the height direction.
According to another purpose of the invention, the invention provides a using method of a device for quickly adding or subtracting pearlife, which comprises the following steps:
the method comprises the following steps: opening the sand raking opening of the cold box, enabling the pearlife in the cold box to flow out of the collecting box, and burying the pearlife in a feed inlet of the loading device;
step two: starting the loading device, and allowing the pearlife to enter the transfer bag under the action of the loading device;
step three: after the transfer bag is full, transferring the transfer bag and storing the transfer bag until the pearlife in the cold box does not flow out;
step four: opening an access door on the cold box, starting the air compressor, spraying compressed air from the spray gun through a compressed air pipeline, and spraying the pearl sand left in the cold box layer by layer, wherein the pearl sand is concentrated to the bottom of the cold box by the gravity;
step five: closing the emptying valve, generating negative pressure in the bag-type dust collector, sucking the pearl sand by the suction nozzle, enabling the pearl sand to enter the bag-type dust collector through the hose, opening a discharge gate valve at the bottom of the bag-type dust collector after the bag-type dust collector is full, opening the emptying valve, enabling the pearl sand to flow into the collecting box from the bag-type dust collector, starting the loading device, enabling the pearl sand to enter the transfer bag under the action of the loading device, and repeating the steps until the pearl sand in the cold box is cleaned;
step six: the cold box overhauls the back that finishes, closes the access door, will store a plurality of the pearlite sand the transportation bag is hoisted one by one, be the V font when the transportation bag is hoisted, the transportation bag is hung extremely add sand mouth top, open the transportation bag lower part the bin outlet, the pearlite sand is filled back to in the cold box.
Further, when the air compressor provides compressed air for the spray gun to spray residual pearlife, the Venturi tube and the vacuum pump do not stop working, and air flow from top to bottom is formed inside the cold box.
According to the technical scheme, the addition and subtraction and box cleaning of the cold box pearlife are completed within a limited time, the technological problem that the cold box is cleaned by the addition and subtraction of the pearlife is solved in a fully-closed manner, the transportation, storage and filling costs are greatly saved through the large-sized air-permeable transfer bag, and an efficient, safe and environment-friendly device and method are provided for the overhaul of cold box devices in the industries of petrochemical industry, air separation and the like.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of an embodiment of the present invention;
description of reference numerals:
in the figure, 1-a cold box, 2-pearlite sand, 3-a sand-raking opening, 4-a collecting box, 5-a collecting pipe, 6-a Venturi tube, 7-a reducing pipe, 8-a nozzle, 9-a regulating valve, 10-a vacuum pump, 11-an engine, 12-an air compressor, 13-a feeding hole, 14-a transfer bag, 15-a discharging opening, 16-a hoisting net, 17-a hoisting point, 18-a hoisting beam, 19-a hoisting belt, 20-a truck, 21-an emptying valve, 22-a spray gun, 23-an air inlet pipe, 24-a bag dust collector, 25-a hose, 26-an access door, 27-a suction nozzle, 28-a back-blowing air tank, 29-a discharging gate valve and 30-a sand feeding opening;
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like, indicate orientations and positional relationships based on those shown in the drawings, and are used only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be considered as limiting the present invention.
Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", may explicitly or implicitly include one or more of the described features. In the description of the present invention, "a plurality" means two or more unless specifically defined otherwise. Furthermore, the terms "mounted," "connected," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
As shown in fig. 1:
the utility model provides a device of add and subtract pearly-lustre sand fast, includes cold box 1, and pearly-lustre sand 2 is located cold box 1, and pearly-lustre sand 2 fills and is responsible for keeping cold in cold box 1. The sand raking port 3 is located at the bottom of the cold box and is opened during maintenance to remove the pearl sand in the cold box, and the collecting box 4 is located outside the sand raking port 3 and is used for collecting the naturally flowing pearl sand 2. The collecting box 4 is connected with the sand raking opening 3, the height of the collecting box 4 is higher than the upper edge of the sand raking opening 3, the length of the collecting box 4 is not more than 2 times of the height of the upper edge of the sand raking opening 3 from the ground, and the width of the collecting box 4 is not less than the height of the upper edge of the sand raking opening 3 from the ground.
The collecting box 4 bottom is arranged with collecting pipe 5, and the lower extreme of collecting pipe 5 is connected with venturi 6, and reducing 7 and nozzle 8 are installed to the junction of venturi 6 and collecting pipe 5. The reducing pipe 7 can reduce the pipe diameter and increase the flow speed, the inner diameter of the nozzle 8 is 1/3 of the inner diameter of the collecting pipe 5, and the nozzle 8 is positioned at the center of the circle at the lower end of the collecting pipe 5, namely the nozzle 8 and the collecting pipe 5 form concentric circles with different diameters.
The other end of the Venturi tube 6 is connected with the outlet of the vacuum pump 10, and a flow regulating valve 9 is arranged on a connecting pipeline of the Venturi tube 6 and the vacuum pump 10, so that the exhaust volume can be conveniently regulated. The vacuum pump 10 is connected with the engine 11 and is used for applying power to the vacuum pump 10 to generate negative pressure suction and positive pressure exhaust. The engine 11 is also connected to an air compressor 12, and the engine 11 can apply power to the air compressor 12 to generate compressed air.
The volume of the collecting pipe 5 is 1/2000 of the discharge capacity of the vacuum pump 10, the included angle between the collecting pipe 5 and the ground is less than 75 degrees, the upper end of the collecting pipe 5 is connected with the feed inlet 13 of the transfer bag 14, and the part of the upper end of the collecting pipe 5 inserted into the feed inlet 13 of the transfer bag 14 is properly prolonged, so that the wind-borne pearlife is prevented from directly blowing the transfer bag 14. The size of the transfer bag 14 should not exceed the length, width and height of a common truck, the transfer bag is convenient to transport, the top of the transfer bag is designed to be an inclined plane so as to increase the filtering area and facilitate exhaust, the transfer bag 14 is sewn by high-permeability and tough filter cloth, one end of the transfer bag 14 is provided with a feed inlet 13, the bottom of the transfer bag 14 is provided with a discharge hole 15, and the diameter of the discharge hole 15 is not more than the inner diameter of the sand adding opening 3.
In this embodiment, the transfer bag 14 is sewn from a tough fabric with high air permeability, the transfer bag 14 has a length of less than 10 m, a height of less than 4 m and a width of less than 2 m, the top of the transfer bag 14 has different heights, the air permeability area is increased, the fabric selected for the transfer bag 14 is tested at 5 × 20 cm, the breaking strength in the vertical direction is greater than 1000 newtons, the breaking strength in the horizontal direction is greater than 1000 newtons, and the air permeability of the fabric used for the transfer bag 14 is greater than 1000 liters per square meter per second.
The bottom of the transfer bag 14 is laid with a lifting mesh 16, the area of the lifting mesh 16 being larger than the bottom area of the transfer bag to expose a lifting point 17 when bagging. After the bagging process, the transfer bags are transported by truck 20 to storage. The warehouse is internally provided with hoisting equipment which is connected with a hoisting beam 18, the hoisting beam 18 is connected with hoisting belts 19 with different lengths, the length of each hoisting belt 19 is gradually increased from two ends to the center, the hoisted transfer bag 14 is V-shaped, the lower end of each hoisting belt 19 is connected with a hoisting point 17 on a hoisting net 16, and the hoisted transfer bag is stored and waits for the completion of the cold box overhaul.
When the pearlite sand 2 in the cold box 1 does not naturally flow out from the sand raking opening 3 any more, the cold box access door 26 is opened, the air compressor 12 is started, compressed air cleans the residual pearlite sand in the cold box from top to bottom through a compressed air pipeline and the spray gun 22, and pearlite sand dust sprayed by the compressed air overflows from the sand raking opening 3 and is sprayed into the transfer bag 14 through the collecting pipe 5.
After the cleaning layer by layer is finished, the pearlife is concentrated at the bottom of the cold box, the emptying valve 21 is closed, and negative pressure is generated in the air inlet pipe 23 and the bag-type dust collector 24. The bag-type dust collector 24 is arranged on the upper portion of the collecting box 4, a blowback air tank 28 is arranged in the bag-type dust collector 24, the blowback air tank 28 is connected with the air compressor 12 and provides compressed air for blowback, an inlet of the bag-type dust collector 24 is connected with the hose 25, the hose 25 is connected with the suction nozzle 27 at the bottom of the cleaning cold box, an outlet of the bag-type dust collector 24 is connected with the air inlet pipe 23, and negative pressure generated by the vacuum pump is obtained.
The pearly-lustre sand at the bottom of the cold box is sucked into the bag-type dust collector 24, after the bag-type dust collector 24 is fully sucked, the discharging gate valve 29 at the bottom is opened, and the pearly-lustre sand is discharged into the collecting box 4 and enters the transfer bag 14 through the collecting pipe 5.
The pearly-lustre sand is filled from the position where the transport bag 14 is carried by a truck 20 for a warehouse to the cold box 2, the cold box hoisting equipment is connected with a hoisting beam 18, the hoisting beam 18 is connected with a hoisting belt 19, the hoisting belt 19 is connected with a hoisting point 17, and the transport bag 14 is hoisted. The material outlet 15 of the transfer bag is connected with a sand adding port 30 of the cold box for adding sand, and the sand raking port 3 is opened to suck out dust-containing gas generated by adding sand.
The invention provides a cold box overhauling method for quickly adding and subtracting pearlife, which comprises the following steps:
the method comprises the following steps: opening a sand raking opening 3 at the lower part of the cold box 1, naturally flowing the pearl sand 2 into the collecting box 4, and burying a feed inlet at the lower end of the venturi tube 6 and the collecting tube 5;
step two: starting an engine 11 and a vacuum pump 10, exhausting air by the vacuum pump 10, entering a venturi tube 6, and ejecting air along a collecting pipe 5, wherein the pearl sand 2 is blown into a transfer bag 14 through the collecting pipe 5 under the drive of negative pressure;
step three: after the transfer bag 14 is full, the transfer bag 14 is transported to a storehouse by a truck 20, a hoisting beam 18 and a hoisting bag 19 are connected with a hoisting net 16, the transfer bag 14 is hoisted for storage, and the process is repeated until the pearlife 2 in the cold box 1 does not naturally flow out any more;
step four: opening the access door 26 on the uppermost layer of the cold box 1, closing other access doors of the cold box, starting the air compressor 12, spraying compressed air along with a compressed air pipeline and the spray gun 22, spraying the pearl sand left in the cold box layer by a worker from the access door on the uppermost layer, and concentrating the pearl sand 2 to the bottom of the cold box 1 by gravity;
step five: closing the emptying valve 21, generating negative pressure in the bag-type dust collector 24, enabling a worker to enter the bottom of the cooling box, sucking the pearl sand 2 by using a suction nozzle 27, enabling the pearl sand to enter the bag-type dust collector 24, opening a discharge gate valve 29 at the bottom of the bag-type dust collector 24 after the bag-type dust collector is full of 24, opening the emptying valve 21, enabling the pearl sand to flow into the collection box 4 from the bag-type dust collector 24, blowing the pearl sand 2 into the transfer bag 14 from the Venturi tube 6 and the collection tube 5, and repeating the steps until the pearl sand in the cooling box 1 is cleaned;
step six: after the cold box 1 is overhauled, other access doors except the sand adding opening 30 are closed, the stored transfer bags 14 are lifted one by one, the transfer bags 14 are in a V shape when being lifted, the transfer bags 14 are lifted to the upper portion of the sand adding opening 30 of the cold box 1, the discharge opening 15 at the lower portion of the transfer bags 14 is opened, and the pearlife 2 is filled into the cold box.
When the pearlite sand 2 in the embodiment naturally flows out, no worker is needed to operate the sand scraping opening 3, and more than 90% of the pearlite sand 2 can be automatically loaded into the transfer bag 14 for transportation.
When the air compressor 12 of the embodiment provides compressed air to blow residual pearlite 2 on each layer, the venturi tube 6, the engine 11 and the vacuum pump 10 do not stop working, when other access holes are closed, air flow from top to bottom is formed inside the cold box 1, and dust of the pearlite 2 cannot leak and affect the surrounding environment.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the invention has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. The device for quickly adding and reducing the pearly-luster sand is characterized by comprising a cold box, a collecting box, a loading device and a cleaning pipeline, wherein a sand adding port is formed in the top of the cold box, a sand scraping port is formed in the bottom of the cold box, an access door is arranged on the side wall of the cold box, the collecting box is arranged close to the sand adding port, one end of the loading device is located in the collecting box, the other end of the loading device is connected with a transfer bag, the loading device comprises a collecting pipe and a Venturi tube, one end of the Venturi tube is located in the collecting pipe, and the other end of the Venturi tube is connected with a positive pressure end of a vacuum pump;
the top of collecting box is equipped with the sack cleaner, the entry of sack cleaner has the suction nozzle through the hose connection, the export of sack cleaner with the negative pressure end of vacuum pump is connected, the sack cleaner with be equipped with the atmospheric valve on the connecting pipeline between the vacuum pump, the one end of clearance pipeline is equipped with the spray gun, the other end and the air compressor machine of clearance pipeline are connected.
2. The device for rapidly increasing or decreasing the pearlife according to claim 1, wherein a reducing pipe is arranged at one end of the venturi pipe, which is positioned in the collecting pipe, a nozzle is connected to the reducing pipe, the inner diameter of the nozzle is 1/3 of the inner diameter of the collecting pipe, and the venturi pipe is provided with a flow regulating valve.
3. The device for rapidly adding and subtracting the pearlife according to claim 1, wherein a hoisting net is arranged at the lower part of the transfer bag, a plurality of hoisting points are arranged at the edge of the hoisting net, a discharge opening is arranged at the lower part of the transfer bag, and the diameter of the discharge opening is not more than the inner diameter of the sand adding opening.
4. The device for rapidly increasing or decreasing the pearlife according to claim 3, further comprising a hoisting beam, wherein a plurality of hoisting belts are arranged on the hoisting beam, one end of the hoisting belt is connected with the hoisting beam, the other end of the hoisting belt is connected with the hoisting point, and the length of the hoisting belt is gradually increased from the two ends to the center.
5. The device for rapidly increasing or decreasing the pearlife according to claim 4, wherein the top height of the transfer bag and the length of the lifting belt are adapted to each other, the top height of the transfer bag is gradually decreased from two ends to the middle, the transfer bag is sewn by high-permeability cloth, the breaking strength of the transfer bag in the vertical direction and the horizontal direction is more than 1000 newtons, and the air permeability of the transfer bag per square meter per second is more than 1000 liters.
6. The device for rapidly adding or subtracting the pearlife according to claim 1, wherein the height of the collecting box is greater than that of the sand raking opening.
7. The device for rapidly increasing or decreasing the pearlife according to claim 1, wherein the angle between the collecting pipe and the ground is less than 75 degrees.
8. The apparatus for rapidly increasing or decreasing pearlife according to claim 1, wherein a plurality of said access doors are provided on the side wall of said cold box in the height direction.
9. The use method of the device for quickly adding or subtracting the pearlife according to any one of claims 1 to 8, characterized by comprising the following steps:
the method comprises the following steps: opening the sand raking opening of the cold box, enabling the pearlife in the cold box to flow out of the collecting box, and burying the pearlife in a feed inlet of the loading device;
step two: starting the loading device, and allowing the pearlife to enter the transfer bag under the action of the loading device;
step three: after the transfer bag is full, transferring the transfer bag and storing the transfer bag until the pearlife in the cold box does not flow out;
step four: opening an access door on the cold box, starting the air compressor, spraying compressed air from the spray gun through a compressed air pipeline, and spraying the pearl sand left in the cold box layer by layer, wherein the pearl sand is concentrated to the bottom of the cold box by the gravity;
step five: closing the emptying valve, generating negative pressure in the bag-type dust collector, sucking the pearl sand by the suction nozzle, enabling the pearl sand to enter the bag-type dust collector through the hose, opening a discharge gate valve at the bottom of the bag-type dust collector after the bag-type dust collector is full, opening the emptying valve, enabling the pearl sand to flow into the collecting box from the bag-type dust collector, starting the loading device, enabling the pearl sand to enter the transfer bag under the action of the loading device, and repeating the steps until the pearl sand in the cold box is cleaned;
step six: the cold box overhauls the back that finishes, closes the access door, will store a plurality of the pearlite sand the transportation bag is hoisted one by one, be the V font when the transportation bag is hoisted, the transportation bag is hung extremely add sand mouth top, open the transportation bag lower part the bin outlet, the pearlite sand is filled back to in the cold box.
10. The use method of the device for rapidly adding or subtracting the pearlife according to claim 9, wherein when the air compressor supplies compressed air to the spray gun to spray the residual pearlife, the venturi tube and the vacuum pump do not stop working, and air flow from top to bottom is formed inside the cold box.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN115504114A (en) * | 2022-10-29 | 2022-12-23 | 中石化中原石油工程设计有限公司 | Sand pulling device and method for suspended ceiling normal-pressure storage tank |
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| CN1807208A (en) * | 2006-01-26 | 2006-07-26 | 陈永乾 | Double-pressurized delivery vehicle mounted pneumatic delivery method and apparatus |
| CN107572270A (en) * | 2017-08-29 | 2018-01-12 | 无锡东谷工程科技有限公司 | A kind of continuous bulk system of high concentration force feed |
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| CN113830562B (en) | 2023-04-28 |
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