CN203231619U - Belt type drier - Google Patents

Abstract

The utility model relates to the field of drying devices, in particular to a belt drier for materials of food, traditional Chinese medicine, dehydrated vegetables and the like. The belt type drier comprises a material inlet system, a material distribution system, an air inlet filtering system, a heating system, a main machine, a material transmission system in the main machine and the like. A cleaning system is further arranged in the main machine and comprises a cleaning water pipeline and a compressed air pipeline, and the cleaning water pipeline comprises a water inlet pipe on the upper portion of a bottom mesh belt and a water discharging tube at the bottom of the main machine. The cleaning system composed of the cleaning water pipeline and the compressed air pipeline is added, so that thorough cleaning of dried materials can be achieved by the drier, cleanness of the drier can be fully ensured, the phenomenon of crossed contamination caused by using one drier for drying various materials can be avoided, and the requirements for enabling one drier to dry different materials can be met.

Description

A kind of band drier

Technical field

The utility model relates to drying device field, relates in particular to a kind of band drier for materials such as food, Chinese medicine and dehydrated vegetables.

Background technology

Band drier is to be widely used in industry continuous drying equipment such as chemical industry, food, medicine, building materials, be used for the gas permeability drying of materials such as sheet, strip, graininess or bulk preferably, particularly suitable especially for the material that water content height such as dehydrated vegetables, the prepared slices of Chinese crude drugs, dry materials temperature requirement are comparatively strict.Along with the continuous progress of technical merit, band drier also progressively is tending towards variation.But band drier does not in the market all have purging system, therefore a drying machine can only carry out drying to a kind of material, if when again unclassified stores being carried out drying behind a kind of dry materials, if clear up unclean, then can there be cross pollution, especially to the drying of Chinese medicine and food, the clean environment degree is had relatively high expectations, and careless slightlyly then can cause life danger; And artificial cleaning has defectives such as labour intensity is big, cleaning performance is poor, efficient is low.

Needs along with market, traditional Chinese medicine enterprise turns to production capacity and automation to require higher equipment to the requirement of Chinese medicine drying plant, belt drying machine becomes the first-selected product of enterprise, but in equipment comes into operation process, because medicinal material is wide in variety, the big and irregular of shape difference, many traditional Chinese medicine enterprises can occur and run into thorny reinforced problem, be phenomenons such as feeder stops up, cloth is inhomogeneous, had a strong impact on production efficiency, cause enterprise's production cost to increase.And existing Chinese medicine drying equipment all is directly to supply to cloth system by transportation belt feeding system to carry out cloth, the buffer storage device that lacks wet feed, can't realize even feeding, cause Chinese medicine wet feed skewness on the dryer inner guipure, uniformity is bad when causing drying, cause the Chinese medicine contained humidity there are differences, influence product quality.

The utility model content

The purpose of this utility model is to overcome the defective that prior art exists, a kind of cleaning convenience, safety and sanitation are provided, function is many, adaptability is strong, easy to operate, the band drier that steady quality and drying efficiency are high.

The technical scheme that realizes the utility model purpose is: a kind of band drier, comprise feed system, cloth system, air intake filtration system, heating system, main frame and be positioned at the material transmission system of main frame, the discharge system of main frame one end bottom, the air draft of main frame upper end/wet system, cooling system and control system; Described material transmission system comprises the multilayer guipure and is positioned at the power transmission shaft at guipure two ends that described guipure carries out transmission by the chain that is positioned at the power transmission shaft two ends; Described cooling system is the cooling blower that is positioned at the main frame end; Also be provided with purging system in the described main frame, described purging system comprises rinse water pipeline and compressed air line; Described rinse water pipeline comprises the water inlet pipe that is positioned at bottom guipure top and is positioned at the drainpipe of main frame bottom.

Technique scheme, described water inlet pipe comprise the rinse water main line of vertical setting and a plurality of being parallel to each other and horizontally disposed rinse water branch line that is connected with the rinse water main line by bend pipe, have some spray apertures on the described rinse water branch line; Described every layer of guipure divides two-layer up and down by power transmission shaft, described rinse water branch line is horizontally installed between every layer of guipure two-layer up and down; Offer some through holes on the drainpipe upper tube wall, be fixedly connected with some downpipes on the described through hole.

Technique scheme, described compressed air line correspondence is arranged on rinse water pipeline outside, and described compressed air line also comprises the compressed air main line and is horizontally set on guipure top and has a plurality of compressed air branch lines of venthole.

Technique scheme, described feed system comprise the front end feeding system that is positioned at the main frame outside and are positioned at the feed bin that adds on main frame one end top; The described feed bin that adds comprises and is positioned at charge door and the horizontally disposed discharging opening that adds feed bin top, the described feed bin inside that adds also is provided with agitating device and the anti-guide plate of pressing, described agitating device is horizontally set on the discharging opening place that adds the feed bin bottom, and described anti-pressure guide plate is obliquely installed in adding feed bin; One inclined-plane is arranged at the described feed bin bottom that adds, and described inclined-plane has the α angle with the anti-guide plate of pressing, and described α angle is smaller or equal to 60 degree.

Technique scheme, described agitating device outer end is connected with reductor, and the variable frequency adjustment device is installed on the described reductor; The described feed bin upper end that adds is provided with the ultrasonic wave charge level detector, is provided with out feed bin between described discharging opening and the cloth system.

Technique scheme, described main frame are divided 3 ~ 10 cycling elements, and each cycling element bottom front is provided with heater; Described cycling element upper end is provided with the saturated vapor import, the lower end is provided with the saturated vapor outlet, described saturated vapor exit is connected with the pipeline that leads to the heater upper end, and described cycling element bottom also is provided with condensation-water drain, and the pipeline that links to each other with condensation-water drain is positioned at heater base; Described air intake filtration system comprises that the new wind that is positioned at the outside side of heater replenishes mouth and is positioned at the bypass air channel filter that new wind replenishes mouthful bottom, and described heater rear end also is provided with circulating fan; Described air draft/wet system comprise the air draft that is arranged on every cycling element top/wet mouthful and with an air draft/wet pipeline that a plurality of air drafts/wet mouth is connected, described air draft/wet pipeline middle part is provided with air-introduced machine, described air-introduced machine has 1 ~ 3; Described cycling element both sides all are equipped with two ends, quick operating valve main frame bottom manhole are installed.

Technique scheme, described main frame bottom guipure bottom is ramped bottom surface; All the other multilayer guipure bottoms are equipped with oblique air ducting, and described oblique air ducting is the charging tray that is fixedly installed on the guipure bottom, and described oblique air ducting is made by stainless steel material.

Technique scheme, all the other guipure blanking end outsides on described bottom guipure top are equipped with baffle plate, and described baffle plate comprises the vertical plane on top and the inclined-plane of bottom, and described inclined-plane extends to its adjacent lower net band feed end.

Technique scheme is provided with adjustable plate in the described cloth system, and described adjustable plate is regulated the height up and down of cloth system by motor.

Technique scheme, described main frame internal layer is provided with the alumina silicate heat-insulation layer, and skin is coated with corrosion resistant plate.

After adopting technique scheme, the utlity model has following positive effect:

(1) the utility model has increased the purging system of being made up of rinse water pipeline and compressed air line, and logical clear water in the rinse water pipeline is used for the dry cleaning of back to drying machine guipure and main frame bottom that finish; Be connected with compressed air in the compressed air line, be used for cleaning the drying of back to guipure in the drying machine and main frame that finish, realize thorough cleaning and drying after drying machine is finished dry materials, the cleannes of drying machine have fully been guaranteed, thereby avoided various materials to use a kind of drying machine to carry out the dry generation that produces the phenomenon of cross-infection, satisfied the diversified demand that a kind of drying machine can dry multiple different material;

(2) directly offer some spray apertures on the clear water branch line in the rinse water pipeline, avoided the installation of spray head, namely save production cost, can increase spray area again, can make the guipure in the motion obtain omnibearing cleaning; The clear water branched pipe that has a spray apertures is arranged on every layer of guipure when effectively having avoided between two-layer up and down the upper strata guipure cleaned, and material drops on lower floor's guipure, can improve cleaning efficiency; Also offer some ventholes on the compressed air line of every layer of guipure upper level setting, realize effectively having improved drying efficiency to cleaning the comprehensive drying of back guipure;

(3) the utility model cloth system upper end is provided with and adds feed bin, add the feed bin bottom and be provided with agitating device, and discharging opening is horizontally disposed with, the discharging opening place of can easily wet feed being pulled over, anti-pressure guide plate is obliquely installed according to certain angle and is adding the feed bin inner body wall, the Chinese medicine wet feed that enters from charging aperture had certain guide effect, can prevent from when the Chinese medicine wet feed from vertically entering agitating device being produced bigger impulsive force, can effectively avoid the wet feed not vertical upstream device that pushes with wet feed of blanking of building bridge, the problem that causes equipment to destroy too early, thereby can increase substantially production efficiency, prolong the service life of equipment;

(4) with on the reductor that agitating device links to each other also be provided with the variable frequency adjustment device, can be according to the material characteristic of different cultivars, difformity, different humidity, change the rotating speed of the tooth-like shaft of feed, can obtain splendid storing, cloth and even feeding triple role, and do not exist material to repeat to come and go tooth-like shaft problem, the even feeding amount is adjustable on a large scale; The ultrasonic wave Charge level measurer that adds the feed bin outer setting can be monitored the wet feed that adds feed bin inside in real time, and links with the front end feeding system, thereby has guaranteed rational material level scope;

(5) the utility model can design a plurality of cycling elements as required, each cycling element is provided with independently heater, circulating fan, new wind after-filter, moisture exhausting port etc., make drying machine have the high advantage of additional issue intensity, can improve dry materials speed and uniformity, and dry back good product quality; Each cycling element is provided with independently quick operating valve, is convenient to dry back to the cleaning of material with to the drying machine maintenance, and the manhole of main frame bottom also plays the effect of easy access;

(6) the utility model main frame bottom design is the inclined-plane, can make things convenient for collection and the cleaning of material; Oblique air ducting below all the other guipures, can make guipure width cloth wind even, temperature difference control is below 5 ℃, prevent behind the inhomogeneous dry materials that causes of foraminous conveyer two sides temperature moisture inhomogeneous, but and oblique air ducting double as charging tray, oblique design also can be convenient to clear up the material granule that drops on the charging tray;

(7) baffle plate that is provided with of the above guipure blanking of bottom guipure end outside is fallen from the upper strata material and is played good guide effect lower floor's process, preventing that material from spilling from guipure falls into the main frame bottom, can not carry out abundant drying to it, cause the partial material drying effect poor, influence quality of material;

(8) adjustable plate that arranges in the utility model cloth system, and regulate the height up and down of cloth system by motor, regulate the height of materials on the distributing device, thereby satisfy the demand of materials such as different humidity, shape, size, make different types of material all can reach best drying effect;

(9) heat preservation zone adopts the alumina silicate heat-insulation layer to be incubated in the drying machine, make insulation of equipment district hull-skin temperature≤room temperature+5 ℃, have good airproof performance, little, the clean environment degree advantages of higher of heat waste, outer field corrosion resistant plate can have good protective action to heat-insulation layer;

(10) the utility model design is ingenious, rational in infrastructure, complete machine is controlled by control system, the operating frequency of temperature, humidity and transmission system in the drying machine all is presented on the instrument cabinet, can control by control system in real time, the operation interface close friend, have automaticity height, wide, the safety and sanitation of applicability, namely be applicable to root, stem, leaf, flower, fruit etc., shape is specially Chinese medicines such as sheet, bulk, section shape, graininess, palpus shape and carries out drying, is applicable to that also fruit or vegetable type food such as green tea produced in Anhui Province, potato dehydrates over the ground.

Description of drawings

Content of the present utility model is easier to be expressly understood in order to make, and according to specific embodiment also by reference to the accompanying drawings, the utility model is described in further detail, wherein below

Fig. 1 is the utility model front view;

Fig. 2 is the utility model vertical view;

Fig. 3 is the utility model side view;

Fig. 4 is the utility model rinse water pipeline water inlet pipe front view;

Fig. 5 is the utility model rinse water pipeline water inlet pipe vertical view;

Fig. 6 is the utility model rinse water pipeline water inlet pipe side view;

Fig. 7 is the utility model rinse water tubes rows water pipe front view;

Fig. 8 is the utility model rinse water tubes rows water pipe vertical view;

Fig. 9 is the utility model compressed air line front view;

Figure 10 is the utility model compressed air line vertical view;

Figure 11 is the utility model compressed air line side view;

Figure 12 adds the feed bin front view for the utility model;

Figure 13 adds the feed bin vertical view for the utility model;

Among the figure 1, feed system; 11, add feed bin; 111, charge door; 112, discharging opening; 12, agitating device; 121, reductor; 13, the anti-guide plate of pressing; 14, go out feed bin; 2, cloth system; 3, air intake filtration system; 31, new wind replenishes mouth; 32, bypass air channel filter; 33, circulating fan; 4, heating system; 41, heater; 42, saturated vapor import; 43, saturated vapor outlet; 44, condensation-water drain; 5, main frame; 51, manhole; 52, oblique air ducting; 53, baffle plate; 54, heat-insulation layer; 55, ramped bottom surface; 6, material transmission system; 61, guipure; 62, power transmission shaft; 7, discharge system; 8, air draft/wet system; 81, air draft/wet mouthful; 82, air draft/wet pipeline; 83, air-introduced machine; 9, purging system; 91, rinse water pipeline; 92, compressed air line; 921, compressed air main line; 922, compressed air branch line; 93, water inlet pipe; 931, rinse water main line; 932, rinse water branch line; 94, drainpipe; 941, through hole; 942, downpipe; 10, cooling system; 101, cooling blower.

The specific embodiment

(embodiment 1)

See Fig. 1 to Fig. 3, the utlity model has feed system 1, cloth system 2, air intake filtration system 3, heating system 4, main frame 5 and be positioned at the material transmission system 6 of main frame 5, the discharge system 7 of main frame 5 one end bottoms, the air draft of main frame 5 upper ends/wet system 8, cooling system 10 and control system; Material transmission system 6 comprises multilayer guipure 61 and is positioned at the power transmission shaft 62 at guipure 61 two ends, guipure 61 carries out transmission by the chain that is positioned at power transmission shaft 62 two ends, the utility model can be designed to 2 ~ 8 layers of guipure 61 as required, and present embodiment is 5 layers of guipure 61, in most cases satisfies the demand; Cooling system 10 is for being positioned at the cooling blower 101 of main frame 5 ends; Also be provided with purging system 9 in the main frame 5, purging system 9 comprises rinse water pipeline 91 and compressed air line 92; The rinse water pipeline comprises the water inlet pipe 93 that is positioned at bottom guipure 61 tops and the drainpipe 94 that is positioned at main frame 5 bottoms.

Preferably, see Fig. 4 to Fig. 8, water inlet pipe 93 comprises the rinse water main line 931 of vertical setting and a plurality of being parallel to each other and horizontally disposed rinse water branch line 932 that is connected with rinse water main line 931 by bend pipe, has some spray apertures on the rinse water branch line 932; Every layer of guipure 61 is two-layer up and down by power transmission shaft 62 minutes, and rinse water branch line 932 is horizontally installed between every layer of guipure 61 two-layer up and down; Offer some through holes 941 on drainpipe 94 upper tube walls, be fixedly connected with some downpipes 942 on the through hole, after clear water had cleaned main frame, sewage entered drainpipe 94 backs by downpipe 942 and discharges body.

Preferably, see Fig. 9 to Figure 11, compressed air line 92 correspondences are arranged on rinse water pipeline 91 outsides, and compressed air line 92 also comprises compressed air main line 921 and is horizontally set on guipure 61 tops and has a plurality of compressed air branch lines 922 of venthole.

Preferably, see Figure 12 and Figure 13, what feed system 1 comprised the front end feeding system that is positioned at main frame 5 outsides and was positioned at main frame 5 one end tops adds feed bin 11; Adding feed bin 11 comprises and is positioned at charge door 111 and the horizontally disposed discharging opening 112 that adds feed bin 11 tops, add feed bin inside and also be provided with agitating device 12 and the anti-guide plate 13 of pressing, agitating device 12 is horizontally set on discharging opening 112 places that add feed bin 11 bottoms, and the anti-guide plate 13 of pressing is obliquely installed in adding feed bin 11; Adding feed bin 11 bottoms has an inclined-plane, and the inclined-plane has the α angle with the anti-guide plate of pressing, and the α angle is smaller or equal to 60 degree.Agitating device 12 outer ends are connected with reductor 121, and the variable frequency adjustment device is installed on the reductor 121; Add feed bin 11 upper ends and be provided with the ultrasonic wave charge level detector, be provided with out feed bin 14 between discharging opening 112 and the cloth system 2.

5 fens 3 ~ 10 cycling elements of main frame, present embodiment is totally 8 cycling elements, and each cycling element bottom front is provided with heater 41; The cycling element upper end is provided with saturated vapor import 42, the lower end is provided with saturated vapor outlet 43, saturated vapor exports 43 places and is connected with the pipeline that leads to heater 41 upper ends, and the cycling element bottom also is provided with condensation-water drain 44, and the pipeline that links to each other with condensation-water drain 44 is positioned at heater 41 bottoms; Air intake filtration system 3 comprises that the new wind that is positioned at the outside side of heater replenishes mouth 31 and is positioned at the bypass air channel filter 32 that new wind replenishes mouthful 31 bottoms, and heater 41 rear ends also are provided with circulating fan 33; Air draft/wet system 8 comprise the air draft that is arranged on every cycling element top/wet mouthful 81 and with a plurality of air drafts/wet mouthful 8 air drafts that are connected/wet pipeline 82, air draft/wet pipeline 82 middle parts are provided with air-introduced machine 83, air-introduced machine 83 has 1 ~ 3; The cycling element both sides all are equipped with two ends, quick operating valve main frame 5 bottom manhole 51 are installed.During work, saturated vapor enters in the main frame 5 from saturated vapor import 42, and becomes hot blast through the heating of heater, new wind replenishes mouth 31 by new wind and enters main frame 5, and by 32 filtrations of bypass air channel filter, in case impurity along with new wind enters main frame, pollutes material to be dried.The new wind that enters main frame 5 with become the effect that mixes hot blast recirculation blower 33 after hot blast mixes and be issued to the even dry purpose of each layer material.The condensed water that saturated vapor becomes after heating is discharged main frame 5 by condensation-water drain 44.The air that dried humidity is bigger is discharged by the air draft/dehumidification system 8 at main frame 5 tops.

Preferably, see Fig. 3, main frame 5 bottom guipures 61 bottoms are ramped bottom surface 55; All the other multilayer guipure 61 bottoms are equipped with oblique air ducting 52, and oblique air ducting 52 is for being fixedly installed on the charging tray of guipure 61 bottoms, and oblique air ducting 52 is made by stainless steel material.The setting of oblique air ducting 52 can make the mixing hot blast rise along the direction of arrow, thereby makes guipure 5 width cloth wind even, has a narrow range of temperature, and realizes the even drying to material, guarantees quality of material.

Preferably, all the other guipure 61 blanking end outsides on bottom guipure 61 tops are equipped with baffle plate 53, and baffle plate 53 comprises the vertical plane on top and the inclined-plane of bottom, and the inclined-plane extends to its adjacent lower floor guipure 61 feed ends.

Preferably, be provided with adjustable plate in the cloth system 1, adjustable plate is regulated the height up and down of cloth system 1 by motor.

Preferably, main frame 5 internal layers are provided with alumina silicate heat-insulation layer 54, and skin is coated with corrosion resistant plate.

Above-described specific embodiment; the purpose of this utility model, technical scheme and beneficial effect are further described; institute is understood that; the above only is specific embodiment of the utility model; be not limited to the utility model; all within spirit of the present utility model and principle, any modification of making, be equal to replacement, improvement etc., all should be included within the protection domain of the present utility model.

Claims (10)

1. band drier, comprise feed system (1), cloth system (2), air intake filtration system (3), heating system (4), main frame (5) and be positioned at the material transmission system (6) of main frame (5), the discharge system (7) of main frame (5) one end bottoms, the air draft of main frame (5) upper end/wet system (8), cooling system (10) and control system; Described material transmission system (6) comprises multilayer guipure (61) and is positioned at the power transmission shaft (62) at guipure (61) two ends that described guipure (61) carries out transmission by the chain that is positioned at power transmission shaft (62) two ends; Described cooling system (10) is for being positioned at the terminal cooling blower (101) of main frame (5); It is characterized in that: also be provided with purging system (9) in the described main frame (5), described purging system (9) comprises rinse water pipeline (91) and compressed air line (92); Described rinse water pipeline comprises the water inlet pipe (93) that is positioned at bottom guipure (61) top and is positioned at the drainpipe (94) of main frame (5) bottom.

2. band drier according to claim 1, it is characterized in that: described water inlet pipe (93) comprises the rinse water main line (931) of vertical setting and a plurality of being parallel to each other and horizontally disposed rinse water branch line (932) that is connected with rinse water main line (931) by bend pipe, has some spray apertures on the described rinse water branch line (932); Described every layer of guipure (61) divides two-layer up and down by power transmission shaft (62), described rinse water branch line (932) is horizontally installed between every layer of guipure (61) two-layer up and down; Offer some through holes (941) on drainpipe (94) upper tube wall, be fixedly connected with some downpipes (942) on the described through hole (941).

3. band drier according to claim 1, it is characterized in that: described compressed air line (92) correspondence is arranged on rinse water pipeline (91) outside, and described compressed air line (92) also comprises compressed air main line (921) and is horizontally set on guipure (61) top and has a plurality of compressed air branch lines (922) of venthole.

4. band drier according to claim 1 is characterized in that: described feed system (1) comprise be positioned at the outside front end feeding system of main frame (5) and be positioned at main frame (5) one end tops add feed bin (11); The described feed bin (11) that adds comprises and is positioned at charge door (111) and the horizontally disposed discharging opening (112) that adds feed bin (11) top, the described feed bin inside that adds also is provided with agitating device (12) and the anti-guide plate (13) of pressing, described agitating device (12) is horizontally set on the discharging opening (112) that adds feed bin (11) bottom and locates, and described anti-pressure guide plate (13) is obliquely installed in adding feed bin (11); One inclined-plane is arranged at described feed bin (11) bottom that adds, and described inclined-plane has the α angle with the anti-guide plate of pressing, and described α angle is smaller or equal to 60 degree.

5. band drier according to claim 4, it is characterized in that: described agitating device (12) outer end is connected with reductor (121), and described reductor is equipped with the variable frequency adjustment device on (121); Described feed bin (11) upper end that adds is provided with the ultrasonic wave charge level detector, is provided with out feed bin (14) between described discharging opening (112) and the cloth system (2).

6. band drier according to claim 1 is characterized in that: described main frame (5) divides 3 ~ 10 cycling elements, and each cycling element bottom front is provided with heater (41); Described cycling element upper end is provided with saturated vapor import (42), the lower end is provided with saturated vapor outlet (43), described saturated vapor outlet (43) locates to be connected with the pipeline that leads to heater (41) upper end, described cycling element bottom also is provided with condensation-water drain (44), and the pipeline that links to each other with condensation-water drain (44) is positioned at heater (41) bottom; Described air intake filtration system (3) comprises that the new wind that is positioned at the outside side of heater replenishes mouthful (31) and is positioned at the bypass air channel filter (32) that new wind replenishes mouthful (31) bottom, and described heater (41) rear end also is provided with circulating fan (33); Described air draft/wet system (8) comprise air draft/wet mouthful (81) that are arranged on every cycling element top and with air draft/wet pipeline (82) that a plurality of air drafts/wet mouthful (8) are connected, described air draft/wet pipeline (82) middle part is provided with air-introduced machine (83), and described air-introduced machine (83) has 1 ~ 3; Described cycling element both sides all are equipped with two ends, quick operating valve main frame (5) bottom manhole (51) are installed.

7. band drier according to claim 1, it is characterized in that: described main frame (5) bottom guipure (61) bottom is ramped bottom surface (55); All the other multilayer guipure (61) bottoms are equipped with oblique air ducting (52), and described oblique air ducting (52) is for being fixedly installed on the charging tray bottom the guipure (61), and described oblique air ducting (52) is made by stainless steel material.

8. according to the described band drier of each claim of claim 1 ~ 7, it is characterized in that: all the other guipures (61) blanking end outside on described bottom guipure (61) top is equipped with baffle plate (53), described baffle plate (53) comprises the vertical plane on top and the inclined-plane of bottom, and described inclined-plane extends to its adjacent lower floor guipure (61) feed end.

9. according to the described band drier of each claim of claim 1 ~ 7, it is characterized in that: described cloth system is provided with adjustable plate in (1), and described adjustable plate is regulated the height up and down of cloth system (1) by motor.

10. according to the described band drier of each claim of claim 1 ~ 7, it is characterized in that: described main frame (5) internal layer is provided with alumina silicate heat-insulation layer (54), and skin is coated with corrosion resistant plate.

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