CN210098464U - Device for mechanically and hermetically cleaning phosphorus pentoxide plastic bag - Google Patents

Abstract

The utility model provides a device for mechanized airtight cleaning of phosphorus pentoxide plastic bags, which comprises a PLC controller, a washing tank body and a washing tank cover, wherein one side of the washing tank cover is hinged with the washing tank body, a tail gas pipe is arranged at the upper part of the washing tank cover, a feed opening is arranged at the side surface of the washing tank cover, three V-shaped baffling jet plates which are longitudinally distributed are evenly arranged on the inner wall of the washing tank body, four groups of nozzles are evenly arranged on each V-shaped baffling jet plate, each group of nozzles comprises two nozzles which have an included angle of 90-145 degrees and are reversely arranged, one group of nozzles at the top of the V-shaped baffling jet plates are obliquely arranged at 45 degrees downwards along the horizontal direction, the lower three groups of nozzles are horizontally arranged, the nozzles are connected with a jet water pump through a jet water pipe and a three-way electromagnetic valve, the three way electromagnetic, the utility model discloses a efflux water carries out clockwise and anticlockwise stirring to the pocket and washs, has realized washing and effective recycle to the more thorough of pocket.

Description

Device for mechanically and hermetically cleaning phosphorus pentoxide plastic bag

Technical Field

The utility model relates to a chemical industry equipment technical field, concretely relates to device of airtight washing phosphorus pentoxide plastics pocket of mechanization.

Background

In the production process of the phosphorus pentoxide powder, part of enterprises are packaged by plastic bags, part of phosphorus pentoxide powder is adhered in the used packaging bags, for example, 25 kg of phosphorus pentoxide powder is packaged in each bag, 100-200 g of phosphorus pentoxide powder can be adhered in each used bag, and the phosphorus pentoxide powder absorbs moisture or contacts with water to generate a large amount of heat and generate phosphoric acid solution, the used packaging bags cannot be recycled if not cleaned, the loss of phosphorus pentoxide is caused if the phosphorus pentoxide powder is directly abandoned, the production cost is increased, and the environment is polluted because the phosphorus pentoxide absorbs moisture to generate phosphoric acid.

In the cleaning process of the phosphorus pentoxide packaging bags with small quantity, the conventional cleaning method is to directly put the phosphorus pentoxide packaging bags into water for soaking and cleaning, when the phosphorus pentoxide contacts the water, a large amount of heat can be rapidly released to enable the plastic packaging bags to shrink rapidly, and part of phosphorus pentoxide powder or phosphoric acid solution is coated, so that the phosphorus pentoxide adhered to the packaging bags cannot be cleaned, the next recycling of the packaging bags is influenced, and the secondary pollution to the environment is also caused. Meanwhile, in the process of cleaning the phosphorus pentoxide plastic packaging bag, as the phosphorus pentoxide powder rapidly emits a large amount of heat when contacting with water, acid mist containing phosphoric acid is generated, and the harm to the health of cleaning operators can be caused.

At present, a small number of phosphorus pentoxide plastic packaging bags are generally manually cleaned by arranging a first washing tank and a second washing tank. When the first washing is carried out, the phosphorus pentoxide packaging bag to be washed is fixed on the bag fixing frame and is placed at the water outlet of the circulating water pipeline, the phosphorus pentoxide adhered in the bag is quickly washed clean, and the operation is repeated. When the secondary washing is carried out, the bags are washed by circulating water in the two washing tanks in the same method, and then washed clean by a small amount of clear water, and the operation is repeated. And hanging the washed bags on a drip rack, and collecting the bags when no liquid drips basically. This operation is labor intensive, inefficient, uncomfortable and requires extensive cleaning of the bags.

Disclosure of Invention

The utility model aims to provide a: aiming at the problems that the conventional phosphorus pentoxide plastic packaging bag is easy to shrink and wrap phosphorus pentoxide powder or phosphoric acid solution in the conventional cleaning method, so that the cleaned phosphorus pentoxide packaging bag cannot be effectively recycled, acid mist of phosphoric acid harmful to the health of personnel and the environment is generated in the cleaning process, the labor amount in the cleaning process is large, and the efficiency is low, the device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag is provided

The utility model adopts the technical scheme as follows:

the utility model provides a device of the airtight phosphorus pentoxide plastic pocket that washs of mechanization, including PLC controller, the washing jar body and one side with washing jar body articulated washing cover, the tail gas pipe is installed on washing cover upper portion, and the side is provided with the dog-house, evenly be equipped with three longitudinal distribution's V-arrangement baffling injection plate on the internal wall of washing jar, every evenly install four groups of nozzles on the V-arrangement baffling injection plate, every group the nozzle includes that two contained angles are 90-145 and the nozzle of reverse installation, a set of nozzle of V-arrangement baffling injection plate topmost sets up along horizontal direction slant 45 down, following three groups the nozzle is horizontal installation, the nozzle passes through jet water pipe and three solenoid valve and is connected with the jet water pump, three solenoid valve with the jet water pump with the PLC controller electricity is connected.

Preferably, the bottom of the inner wall of the washing tank body is provided with a step, a filter plate is placed on the step, three V-shaped notches matched with the V-shaped baffling injection plate are uniformly distributed on the periphery of the filter plate, a lifting hook is arranged on the filter plate, and the height of the lifting hook is smaller than that of the washing tank body.

Preferably, the upper side of the feeding port is hinged with a feeding movable door, and the outer side of the feeding port is provided with a feeding chute.

Preferably, the V-shaped baffling and spraying plate is fixedly connected with the inner wall of the washing tank body through bolts.

Preferably, a fixed block is arranged on one side, away from the feeding port, of the washing tank cover, the fixed block is fixedly connected with a piston rod end of an uncovering cylinder through a bolt, the cylinder of the uncovering cylinder is hinged with the outer wall of the washing tank body, and the uncovering cylinder is electrically connected with the PLC.

Preferably, the washing device further comprises a first washing tank, a second washing tank and a third washing tank which are the same in specification, wherein the first washing tank, the second washing tank and the third washing tank are connected with the top of the washing tank body through liquid inlet pipes, washing pumps matched with the first washing tank, the second washing tank and the third washing tank and washing water feeding electromagnetic valves are arranged on the liquid inlet pipes respectively, the first washing tank, the second washing tank and the third washing tank are connected with the bottom of the washing tank body through liquid discharge pipes, liquid discharge electromagnetic valves matched with the first washing tank, the second washing tank and the third washing tank are arranged on the liquid discharge pipes respectively, the liquid discharge pipes are further connected with a water inlet of the jet flow water pump, and the washing pumps, the washing water feeding electromagnetic valves and the liquid discharge electromagnetic valves are electrically connected with the PLC.

Preferably, be equipped with on-line density appearance on one washing tank, be equipped with liquid level control appearance on three washing tanks, clear water pipe is connected to three washing tanks, be equipped with the moisturizing solenoid valve on the clear water pipe, on-line density appearance, liquid level control appearance and moisturizing solenoid valve with the PLC controller electricity is connected.

Preferably, the volumes of the washing tank body, the first washing tank, the second washing tank and the third washing tank are 1-3m³The material of the washing tank body is stainless steel 316L, and the material of the first washing tank, the second washing tank and the third washing tank can be PVC, PP, PE or stainless steel 316L.

Preferably, the aperture of the nozzle is phi 8-phi 20, and the material is stainless steel 316L

Preferably, still include electric block, electric block sets up washing jar body top, and with the PLC controller electricity is connected.

To sum up, owing to adopted above-mentioned technical scheme, the beneficial effects of the utility model are that:

1. the utility model discloses a tee bend solenoid valve control nozzle water spray realizes that jet stream water carries out fast-speed stirring and washing to the wrapping bag clockwise and anticlockwise, and rivers meet the baffling board, can change the flow direction and then promote stirring efficiency to rivers can take away a large amount of heats, thoroughly rinses the phosphorus pentoxide powder of adhesion in the clean plastics pocket, prevents the adhesion of film pocket, and the plastic bag after the sanitization can be used for the processing of next step and obtains effective recycle;

2. the utility model discloses an installed the tail gas pipe on washing cover upper portion, the acid mist that contains phosphoric acid that the pocket cleaning process produced can enter corresponding tail gas washing system through the tail gas pipe, handles and discharges after qualified, has both eliminated the harm of acid mist to operating personnel's health, has also eliminated the pollution of acid mist to the environment;

3. the utility model adopts mechanical sealing operation and automatic control, has simple operation and high washing efficiency, can continuously feed 200 pieces of phosphorus pentoxide plastic packaging bags and 300 pieces of phosphorus pentoxide plastic packaging bags each time, and is particularly suitable for enterprises with larger cleaning quantity;

4. the utility model realizes the repeated cleaning of the packaging bag and the recycling of the phosphoric acid solution generated by the cleaning by arranging the first cleaning tank, the second cleaning tank and the third cleaning tank, has better economic benefit and environmental protection benefit;

5. the utility model discloses an automatic opening of washing cover has been realized to the cylinder shrink of uncapping to through lifting hook and electric block's setting, can together hang out washing back wrapping bag and filter plate, can put into the washing tank again with the filter plate after taking off the wrapping bag internal, through the self-closing of the rising realization washing cover of the cylinder of uncapping, easy operation, full automation has reduced operative employee intensity of labour, has improved the cleaning efficiency.

Drawings

FIG. 1 is a schematic diagram of a washing tank structure of a device for mechanically and hermetically cleaning a phosphorus pentoxide plastic bag;

FIG. 2 is a schematic diagram of a filter plate structure of a device for mechanically and hermetically cleaning a phosphorus pentoxide plastic bag;

FIG. 3 is a top view of a washing tank of the device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag;

FIG. 4 is a schematic structural diagram of a device for mechanically and hermetically cleaning a phosphorus pentoxide plastic bag;

labeled as: 1-PLC controller, 2-washing tank body, 3-washing tank cover, 4-tail gas pipe, 5-feeding port, 6-V-shaped deflection spraying plate, 7-nozzle, 8-jet water pipe, 9-three-way electromagnetic valve, 10-jet water pump, 11-step, 12-filter plate, 13-V-shaped notch, 14-lifting hook, 15-feeding movable door, 16-feeding chute, 17-fixed block, 18-uncovering cylinder, 19-first washing tank, 20-second washing tank, 21-third washing tank, 22-liquid inlet pipe, 23-liquid outlet pipe, 24-washing pump, 25-washing water feeding electromagnetic valve, 26-liquid discharge electromagnetic valve, 27-clear water pipe, 28-online density instrument, 29-liquid level controller, 30-water replenishing electromagnetic valve, 30-liquid replenishing electromagnetic valve, 31-electric block.

Detailed Description

All features disclosed in this specification may be combined in any combination, except features and/or steps that are mutually exclusive.

The present invention will be described in detail with reference to fig. 1, 2, 3 and 4.

Example 1

A device for mechanically and hermetically cleaning a phosphorus pentoxide plastic bag comprises a PLC (programmable logic controller) 1, a washing tank body 2 and a washing tank cover 3, wherein one side of the washing tank cover 3 is hinged with the washing tank body 2, the upper part of the washing tank cover 3 is provided with an exhaust pipe 4, the side surface is provided with a feed opening 5, the inner wall of the washing tank body 2 is uniformly provided with three V-shaped baffling injection plates 6 which are longitudinally distributed, each V-shaped baffling injection plate 6 is uniformly provided with four groups of nozzles 7, each group of nozzles 7 comprises two nozzles 7 which form an included angle of 90-145 degrees and are reversely arranged, the uppermost group of nozzles 7 of the V-shaped baffling jet plates 6 are obliquely arranged at 45 degrees downwards along the horizontal direction, the lower three groups of nozzles 7 are all horizontally arranged, the nozzle 7 is connected with a jet water pump 10 through a jet water pipe 8 and a three-way electromagnetic valve 9, and the three-way electromagnetic valve 9 is electrically connected with the jet water pump 10 and the PLC 1.

In the embodiment, when the phosphorus pentoxide plastic pocket is washed, the washing process is controlled by the PLC 1, firstly, the pocket is thrown into the washing tank body 2 through the feeding port 5, then clear water is introduced into the tank, the jet water pump 10 with the flow rate of 50-100m3/h and the outlet pressure of 10-15MPa is started, the clockwise nozzle 7 on the three baffling jet plates is controlled to jet water for 60 seconds by controlling the three-way electromagnetic valve 9, then the anticlockwise nozzle 7 on the three baffling jet plates is controlled to jet water for 60 seconds by controlling the three-way electromagnetic valve 9, the automatic operation is repeated for 10 minutes, the high-speed stirring and washing of the packing bag by the jet water in the clockwise direction and the anticlockwise direction are realized, the flow direction of the water flow sprayed by the nozzle 7 is changed after the water flow meets the V-shaped baffling jet plate 6, the stirring efficiency of the water flow to the pocket in the washing tank body 2 is further improved, the phosphorus pentoxide powder adhered to the plastic pocket can be thoroughly cleaned, the adhesion of the plastic pocket is prevented, the cleaned plastic bag is effectively recycled, acid mist containing phosphoric acid generated in the washing process enters a corresponding tail gas washing system through a tail gas pipe 4 to be radially treated and discharged, the harm of the acid mist to the body of an operator is eliminated, and the pollution of the acid mist to the environment is also eliminated

Example 2

The washing tank is characterized in that a step 11 is arranged at the bottom of the inner wall of the washing tank body 2, a filter plate 12 is placed on the step 11, three V-shaped notches 13 matched with the V-shaped deflection injection plates 6 are uniformly distributed on the periphery of the filter plate 12, a lifting hook 14 is arranged on the filter plate 12, and the height of the lifting hook 14 is smaller than that of the washing tank body 2.

In the embodiment, the pocket for washing is located on the upper side of the filter plate 12, the filter plate 12 is matched with the inner structure of the washing tank body 2, after the pocket is washed, the filter plate 12 and the pocket can be lifted out of the washing tank body 2 through the lifting hook 14 arranged on the upper side of the filter plate 12, after the pocket which is washed is taken out, the filter plate 12 is lifted back into the washing tank body, the washing tank cover 3 is closed, next washing can be carried out, the operation is simple, the whole process is mechanized, the labor intensity of operators is reduced, and the washing efficiency is improved.

Example 3

The upper side of the feeding port 5 is hinged with a feeding movable door 15, and the outer side of the feeding port 5 is provided with a feeding chute 16.

In this embodiment, put into the feeding chute 16 with the pocket, the pocket slides into dog-house 5 under the effect of the gravity of pocket self, opens and throws material dodge gate 15 pocket and get into the washing tank 2 inside, throws material dodge gate 15 and close after the pocket gets into the washing tank 2 inside completely, and the effectual acid mist that produces of avoiding the washing in-process gets into the air in the middle of, endangers human polluted air.

Example 4

The V-shaped baffling and spraying plate 6 is fixedly connected with the inner wall of the washing tank body 2 through bolts.

In this embodiment, pass through bolted connection with V-arrangement baffling injection plate 6 and the 2 inner walls of the washing tank body, conveniently take off V-arrangement baffling injection plate 6 and maintain the change, improved the practicality and the flexibility of device.

Example 5

A fixed block 17 is arranged on one side, far away from the feeding port 5, of the washing tank cover 3, the fixed block 17 is fixedly connected with a piston rod end of an uncovering cylinder 18 through a bolt, the cylinder of the uncovering cylinder 18 is hinged with the outer wall of the washing tank body 2, and the uncovering cylinder 18 is electrically connected with the PLC 1.

In the embodiment, when the washing tank cover 3 needs to be opened, the PLC 1 controls the uncovering cylinder 18 to shrink, the uncovering cylinder 18 shrinks to drive the washing tank cover 3 to rotate around the hinged position of the washing tank cover and the washing tank body 2, and the uncovering cylinder 18 gradually deflects leftwards until the washing tank cover 3 is completely opened; when the washing tank cover 3 needs to be closed, the cover opening cylinder 18 is controlled to extend, the washing tank cover 3 rotates around the junction until the washing tank cover 3 is completely closed, the operation is simple, a large amount of manpower is saved, and the working efficiency is further improved.

Example 6

Still include that the same one of specification washes jar 19, two and washes jar 20 and three and wash jar 21, one wash jar 19, two wash jar 20 and three wash jar 21 through feed liquor pipe 22 with wash 2 tops of the jar body and be connected, be equipped with respectively on the feed liquor pipe 22 with one wash jar 19, two wash jar 20 and three wash jar 21 matched with washer pump 24 and wash water on water solenoid valve 25, one wash jar 19, two wash jar 20 and three wash jar 21 through fluid-discharge tube 23 with wash 2 bottoms of the jar body and be connected, be equipped with respectively on the fluid-discharge tube 23 with one wash jar 19, two wash jar 20 and three wash jar 21 matched with flowing back solenoid valve 26, fluid-discharge tube 23 still with jet water pump 10 water inlet is connected, be equipped with online density appearance 28 on one wash jar 19, be equipped with liquid level control appearance 29 on three wash jar 21, three wash jar 21 connection clear water pipe 27, be equipped with moisturizing solenoid valve 30 on the clear water pipe 27, the washing pump 24, the washing water feeding electromagnetic valve 25, the liquid discharging electromagnetic valve 26, the on-line density instrument 28, the liquid level controller 29 and the water supplementing electromagnetic valve 30 are electrically connected with the PLC 1.

In the embodiment, during starting, firstly, quantitative clean water is respectively added into a first washing tank 19, a second washing tank 20 and a third washing tank 21 which have the same specification, water is added into each washing tank to three-fourths of the total height, then a bag is placed into the interior of the washing tank body 2, the whole washing process is controlled by the PLC 1, when the first washing is carried out, a washing pump 24 and a washing water supply electromagnetic valve 25 which are connected with the first washing tank 19 are started, the flow of the washing pump 24 is 10-15m3/h, after the clean water in the first washing tank 19 is completely pumped into the washing tank body 2, a cleaning device in the washing tank body 2 is started, after the first washing is completed, a liquid discharge electromagnetic valve 26 on a liquid discharge pipe 23 connected with the first washing tank 19 is opened, and the washing water is discharged to the first washing tank 19; after the secondary washing, the plastic bag is washed for 10 minutes by using clean water in the secondary washing tank 20 by the same method, then the liquid discharge electromagnetic valve 26 on the liquid discharge pipe 23 connected with the secondary washing tank 20 is opened, the liquid is discharged to the secondary washing tank 20, the operation is repeated, and after the tertiary washing, the phosphorus pentoxide plastic bag is thoroughly cleaned, so that the phosphorus pentoxide plastic bag is convenient to subsequently recycle.

For the recycling of the dilute phosphoric acid produced by washing: when the specific gravity of the first washing tank 19 measured by the on-line densitometer 28 reaches a certain value, the diluted phosphoric acid in the first washing tank 19 is discharged to a diluted phosphoric acid storage tank or other phosphate production processes, after the diluted phosphoric acid in the first washing tank 19 is completely discharged, the washing pump 24 connected with the second washing tank 20 is started, the washing pump 24 discharges the diluted phosphoric acid solution in the second washing tank 20 into the first washing tank 19 through the liquid inlet pipe 22, the washing tank body 2 and the liquid outlet pipe 23, after the discharge, the diluted phosphoric acid in the third washing tank 21 is discharged into the second washing tank 20 through the same method, after the discharge, clear water of about three-fourth of the total height of the tank body is added into the third washing tank 21 through the clear water pipe 27 and the water replenishing electromagnetic valve 30, the phosphoric acid generated by washing is recovered, and can be subsequently used for the production of industrial phosphate or phosphate fertilizer, and has good economic benefit and environmental protection benefit.

Example 7

The volume of the washing tank body 2, the first washing tank 19, the second washing tank 20 and the third washing tank 21 is 1-3m3, the washing tank body 2 is made of stainless steel 316L, and the first washing tank 19, the second washing tank 20 and the third washing tank 21 are made of PVC, PP, PE or stainless steel 316L.

Example 8

The aperture of the nozzle 7 is phi 8-phi 20, and the material is stainless steel 316L.

Example 9

Still include electric block 31, electric block 31 sets up washing tank body 2 top, and with PLC controller 1 electricity is connected.

In this embodiment, after the washing tank cover 3 is opened after the washing, the PLC controller 1 controls the electric block 31 to connect with the lifting hook 14 inside the tank, and then lifts the pocket inside the washing tank 2 and the filter plate 12 together, and after the collection of the washed pocket is completed, the filter plate 12 is returned to the inside of the washing tank 2 by the electric block 31, so that the whole process is automated, the labor force is saved, and the work efficiency is improved.

Finally, it is noted that the above-mentioned embodiments illustrate rather than limit the invention, and that, while the invention has been described with reference to preferred embodiments thereof, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. A device for mechanically and hermetically cleaning a phosphorus pentoxide plastic pocket is characterized in that: comprises a PLC (programmable logic controller) (1), a washing tank body (2) and a washing tank cover (3) with one side hinged with the washing tank body (2), wherein a tail gas pipe (4) is installed on the upper part of the washing tank cover (3), a feed opening (5) is arranged on the side surface of the washing tank cover, three V-shaped baffling jet plates (6) which are longitudinally distributed are uniformly arranged on the inner wall of the washing tank body (2), four groups of nozzles (7) are uniformly installed on each V-shaped baffling jet plate (6), each group of nozzles (7) comprises two nozzles (7) which have included angles of 90 degrees to 145 degrees and are reversely installed, one group of nozzles (7) on the top of each V-shaped baffling jet plate (6) are obliquely arranged at 45 degrees downwards along the horizontal direction, the following three groups of nozzles (7) are horizontally installed, and the nozzles (7) are connected with a jet water pump (10) through a jet water pipe (, the three-way electromagnetic valve (9) is electrically connected with the jet water pump (10) and the PLC (1).

2. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag according to claim 1, is characterized in that: the washing tank is characterized in that a step (11) is arranged at the bottom of the inner wall of the washing tank body (2), a filter plate (12) is placed on the step (11), three V-shaped notches (13) matched with the V-shaped baffling injection plates (6) are uniformly distributed on the periphery of the filter plate (12), a lifting hook (14) is arranged on the filter plate (12), and the height of the lifting hook (14) is smaller than that of the washing tank body (2).

3. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag according to claim 1, is characterized in that: the upper side of the feeding port (5) is hinged with a feeding movable door (15), and the outer side of the feeding port (5) is provided with a feeding chute (16).

4. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag according to claim 1, wherein the V-shaped baffling injection plate (6) is fixedly connected with the inner wall of the washing tank body (2) through bolts.

5. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic pocket according to claim 1 is characterized in that a fixed block (17) is arranged on one side, away from the feeding port (5), of the washing tank cover (3), the fixed block (17) is fixedly connected with a piston rod end of an uncovering cylinder (18) through a bolt, a cylinder of the uncovering cylinder (18) is hinged to the outer wall of the washing tank body (2), and the uncovering cylinder (18) is electrically connected with the PLC (1).

6. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag according to claim 1, is characterized in that: still including the same one of specification wash jar (19), two wash jar (20) and three wash jar (21), one wash jar (19), two wash jar (20) and three wash jar (21) through feed liquor pipe (22) with wash jar body (2) top and be connected, be equipped with respectively on feed liquor pipe (22) with one wash jar (19), two wash jar (20) and three wash jar (21) matched with wash pump (24) and wash water feeding solenoid valve (25), one wash jar (19), two wash jar (20) and three wash jar (21) through fluid-discharge tube (23) with wash jar body (2) bottom and connect, be equipped with respectively on fluid-discharge tube (23) with one wash jar (19), two wash jar (20) and three wash jar (21) matched with flowing back solenoid valve (26), fluid-discharge tube (23) still with jet pump (10) water inlet is connected, wash pump (24), wash water feeding solenoid valve (25) and drain valve (26) and PLC controller (1) electricity are connected.

7. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag according to claim 6, is characterized in that: be equipped with on-line density appearance (28) on one wash tank (19), be equipped with liquid level control appearance (29) on three wash tank (21), clear water pipe (27) is connected in three wash tank (21), be equipped with moisturizing solenoid valve (30) on clear water pipe (27), on-line density appearance (28), liquid level control appearance (29) and moisturizing solenoid valve (30) with PLC controller (1) electricity is connected.

8. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag according to claim 6, wherein the volumes of the washing tank body (2), the first washing tank (19), the second washing tank (20) and the third washing tank (21) are 1-3m³The material of the washing tank body (2) is stainless steel 316L, and the material of the first washing tank (19), the second washing tank (20) and the third washing tank (21) can be PVC, PP, PE or stainless steel 316L.

9. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic pocket according to claim 1, wherein the nozzle (7) has a bore diameter of phi 8-phi 20 and is made of stainless steel 316L.

10. The device for mechanically and hermetically cleaning the phosphorus pentoxide plastic bag according to claim 1, is characterized in that: the washing tank is characterized by further comprising an electric hoist (31), wherein the electric hoist (31) is arranged above the washing tank body (2) and is electrically connected with the PLC (1).

Images