CN108007260B - Cleaning device and cleaning method for evaporator or condenser in heat pump drying system - Google Patents
Cleaning device and cleaning method for evaporator or condenser in heat pump drying system Download PDFInfo
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- CN108007260B CN108007260B CN201711441628.5A CN201711441628A CN108007260B CN 108007260 B CN108007260 B CN 108007260B CN 201711441628 A CN201711441628 A CN 201711441628A CN 108007260 B CN108007260 B CN 108007260B
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- water spraying
- cleaning
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- 238000004140 cleaning Methods 0.000 title claims abstract description 61
- 238000001035 drying Methods 0.000 title claims abstract description 26
- 238000000034 method Methods 0.000 title claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 451
- 238000005507 spraying Methods 0.000 claims abstract description 119
- 230000007246 mechanism Effects 0.000 claims abstract description 28
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 230000000712 assembly Effects 0.000 claims abstract description 18
- 238000000429 assembly Methods 0.000 claims abstract description 18
- 230000001502 supplementing effect Effects 0.000 claims abstract description 14
- 239000000428 dust Substances 0.000 claims abstract description 9
- 239000007921 spray Substances 0.000 claims description 82
- 238000007789 sealing Methods 0.000 claims description 31
- 238000009826 distribution Methods 0.000 claims description 27
- 239000013049 sediment Substances 0.000 claims description 17
- 238000001556 precipitation Methods 0.000 claims description 15
- 230000000694 effects Effects 0.000 claims description 12
- 229910001220 stainless steel Inorganic materials 0.000 claims description 11
- 239000010935 stainless steel Substances 0.000 claims description 11
- 230000005540 biological transmission Effects 0.000 claims description 6
- 230000033001 locomotion Effects 0.000 claims description 6
- 239000012459 cleaning agent Substances 0.000 claims description 5
- 238000011049 filling Methods 0.000 claims description 5
- 238000011010 flushing procedure Methods 0.000 claims description 4
- 239000002699 waste material Substances 0.000 claims description 4
- 230000008878 coupling Effects 0.000 claims description 3
- 238000010168 coupling process Methods 0.000 claims description 3
- 238000005859 coupling reaction Methods 0.000 claims description 3
- 125000004122 cyclic group Chemical group 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000003860 storage Methods 0.000 claims description 2
- 238000009825 accumulation Methods 0.000 abstract description 2
- 238000010438 heat treatment Methods 0.000 description 5
- 239000000126 substance Substances 0.000 description 4
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 1
- 238000012271 agricultural production Methods 0.000 description 1
- 235000009508 confectionery Nutrition 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G9/00—Cleaning by flushing or washing, e.g. with chemical solvents
- F28G9/005—Cleaning by flushing or washing, e.g. with chemical solvents of regenerative heat exchanger
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B08—CLEANING
- B08B—CLEANING IN GENERAL; PREVENTION OF FOULING IN GENERAL
- B08B3/00—Cleaning by methods involving the use or presence of liquid or steam
- B08B3/04—Cleaning involving contact with liquid
- B08B3/10—Cleaning involving contact with liquid with additional treatment of the liquid or of the object being cleaned, e.g. by heat, by electricity or by vibration
- B08B3/14—Removing waste, e.g. labels, from cleaning liquid; Regenerating cleaning liquids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F28—HEAT EXCHANGE IN GENERAL
- F28G—CLEANING OF INTERNAL OR EXTERNAL SURFACES OF HEAT-EXCHANGE OR HEAT-TRANSFER CONDUITS, e.g. WATER TUBES OR BOILERS
- F28G15/00—Details
- F28G15/04—Feeding and driving arrangements, e.g. power operation
Abstract
The cleaning device of the evaporator or the condenser in the heat pump drying system comprises a water spraying mechanism, wherein the water spraying mechanism comprises a water supplementing filter, a water delivery tank, a water delivery pump, an instant electric water heater, a plurality of water spraying branches, a plurality of connecting hoses, a plurality of groups of linear water spraying pipe assemblies for spraying water to the evaporator or the condenser, a water return pipeline, a water return filtering tank, a water return pump and a water return filter, and the linear water spraying pipe assemblies are positioned at the front side of the corresponding evaporator or condenser; the number of the water spraying branches is matched with the number of stages of the evaporator or the condenser, and each water spraying branch is provided with an electromagnetic valve; the inside of the case is provided with a plurality of water spraying driving mechanisms for driving the linear water spraying pipe assembly to reciprocate. The invention also discloses a cleaning method of the cleaning device of the evaporator or the condenser in the heat pump drying system. The invention can clean the evaporator or the condenser working in a severe environment, solves the problem of dust accumulation of the evaporator or the condenser, and ensures the normal operation of the heat pump system.
Description
Technical Field
The invention relates to dust removal of a heat pump drying system, in particular to an automatic cleaning dust removal device for an evaporator or a condenser in the heat pump drying system.
Background
At present, in some baking pump drying systems used in industrial and agricultural production, oil stains and dust are easily accumulated on the surfaces of an evaporator and a condenser which are arranged in a machine case and used as heat exchange, so that the heat exchange difficulty of equipment is increased, the operation efficiency of the equipment is reduced, and the equipment is seriously stopped and cannot be operated; meanwhile, the dust accumulation is easy to breed bacteria, is extremely unfavorable for drying in the food industry, and is to be avoided to the greatest extent.
At present, no good solution is provided for the difficult problem, the surfaces of the evaporator and the condenser are generally cleaned manually, the manual cleaning time is long, the cleaning is uneven, and good control cannot be realized.
Disclosure of Invention
The invention aims to solve the defects in the prior art, and provides a cleaning device and a cleaning method for an evaporator or a condenser in a heat pump drying system, which can automatically clean the evaporator or the condenser working in a severe environment and solve the problem of ash on the surface area of the evaporator or the condenser.
In order to solve the technical problems, the invention adopts the following technical scheme: the cleaning device of the evaporator or the condenser in the heat pump drying system is characterized in that a plurality of stages of evaporators or condensers which are vertically arranged and sequentially arranged at intervals from front to back are arranged in a machine box of the heat pump drying system, the cleaning device comprises a water spraying mechanism, the water spraying mechanism comprises a water supplementing filter, a water delivery water tank, a water delivery water pump, an instant heating type electric water heater, a plurality of water spraying branches, a plurality of connecting hoses, a plurality of groups of linear water spraying pipe assemblies for spraying water to the evaporators or the condensers, a water return pipeline, a water return filtering water tank, a water return water pump and a water return filter, wherein a filling port for filling cleaning agent is arranged on the water delivery water tank, the water inlet end of the water supplementing filter is connected with an external water source through a pipeline, the water outlet end of the water supplementing filter is connected with the water inlet of the water delivery water tank through a pipeline, a water delivery pipeline is connected between the water delivery water tank and each water spraying branch, the water outlet end of the water delivery pipeline is connected with the water inlet end of each water spraying branch, the water delivery pump and the instant heating type electric water heater are connected in series in the water delivery pipeline, the water outlet end of each water delivery branch is respectively connected with a group of linear water spray pipe assemblies through a connecting hose, each group of linear water spray pipe assemblies is arranged corresponding to one-level evaporator or condenser, each linear water spray pipe assembly is arranged in the case and positioned at the front side of the corresponding evaporator or condenser, the water spraying direction of each linear water spray pipe assembly faces the surface of the evaporator or condenser, the bottom of the case provided with the evaporator or condenser is provided with a backwater collecting tank, the water inlet end of the backwater pipeline is connected with the backwater collecting tank, the water outlet end of the backwater pipeline is communicated with one side of the backwater filtering water tank, the other side of the backwater filtering water tank is communicated with the water inlet end of the backwater water pump through a pipeline, the water outlet end of the backwater water pump is communicated with the water delivery water tank through a pipeline, the backwater filter is connected in series on a pipeline between the backwater water pump and the water delivery tank;
the number of the water spraying branches is matched with the number of stages of the evaporator or the condenser, and each water spraying pipeline is provided with an electromagnetic valve for opening or closing the water spraying branches;
a plurality of water spraying driving mechanisms for driving the linear water spraying pipe assemblies to reciprocate along the left-right direction are arranged in a case for installing the evaporator or the condenser, and one water spraying driving mechanism corresponds to one group of linear water spraying pipe assemblies.
The water spraying driving mechanism comprises a water spraying pipe moving guide rail, a water spraying pipe supporting rod, a driving motor, a driving sprocket, a driving chain, a driven sprocket, a left travel switch and a right travel switch, wherein the water spraying pipe moving guide rail, the driving motor, the left travel switch and the right travel switch are fixedly installed inside a case, the driving sprocket and the driven sprocket are respectively connected inside the case through rotation shafts, the water spraying pipe moving guide rail is arranged above an evaporator or a condenser in the left-right horizontal direction, the water spraying pipe supporting rod is slidably connected in the water spraying pipe moving guide rail, a linear water spraying pipe assembly is vertically and fixedly connected to the lower side of the water spraying pipe supporting rod through a connecting piece, the driving sprocket is in transmission connection with the driving motor, the driving sprocket is in transmission connection with the driven sprocket through the driving chain, the head end and the tail end of the driving chain are disconnected, the left end and the right end of the water spraying pipe supporting rod are fixedly connected between the head end and the tail end of the driving chain, the left travel switch is arranged on the left side of the water spraying pipe moving guide rail and is located above the left end of the evaporator or the condenser, the right travel switch is arranged on the right side of the water spraying pipe moving guide rail and is located above the right end of the evaporator or the condenser, and the left travel switch is respectively connected with the driving motor through wires.
The invention also comprises an evaporator and condenser air path sealing structure, the evaporator and condenser air path sealing structure comprises a plurality of horizontal sealing plates which are sequentially arranged from front to back, the left side edge and the right side edge of each horizontal sealing plate are fixed on the inner side wall of the case and are arranged above the evaporator or the condenser, the front side edge of the foremost horizontal sealing plate and the rear side edge of the rearmost horizontal sealing plate are fixed on the inner side wall of the case, a gap is arranged between every two front and rear adjacent horizontal sealing plates, rubber sealing strips fixed on the side edges of the horizontal sealing plates are arranged on the front and rear sides of the gap, and a connecting piece is connected between the front and rear two rubber sealing strips in a sliding mode.
Each group of straight-line spray pipe assembly comprises a vertical water distribution pipe, a plurality of horizontal water distribution pipes and two straight-line spray pipes which are arranged side by side left and right, the vertical water distribution pipes are communicated with the water outlet ends of connecting hoses and are vertically arranged between the two straight-line spray pipes, the plurality of horizontal water distribution pipes are divided into three rows and are uniformly arranged on the left side and the right side of the vertical water distribution pipes along the up-down direction, each row of horizontal water distribution pipes comprises a left horizontal water distribution pipe and a right horizontal water distribution pipe, the two ends of the left horizontal water distribution pipe are respectively communicated with the vertical water distribution pipes and the straight-line spray pipes positioned on the left side, the two ends of the right horizontal water distribution pipes are respectively communicated with the vertical water distribution pipes and the straight-line spray pipes positioned on the right side, the connecting pieces are right-angle bent plates, each straight-line spray pipe is fixedly connected to the lower side of a spray pipe support rod through two right-angle bent plates, the height of each straight-line spray pipe is matched with the height of an evaporator or a condenser, and the straight-line spray pipes are uniformly distributed with a plurality of nozzles from top to bottom, and the directions of the respective spray nozzles are parallel to fins.
The stainless steel filter gauze of two vertical settings is installed to return water filter tank in, and two stainless steel filter gauze divide into one-level silt precipitation tank, second grade silt precipitation tank and tertiary silt precipitation tank from a left side to the right side with return water filter tank, and the play water end and the one-level silt precipitation tank intercommunication of return water pipeline, return water pump's water inlet end and tertiary silt precipitation tank intercommunication.
The mesh sizes of the two stainless steel filtering gauze are sequentially reduced along the water flow direction.
The cleaning method of the cleaning device of the evaporator or the condenser in the heat pump drying system comprises the following steps:
(1) Water storage of the water delivery water tank: the external water source enters the water delivery tank after being filtered by the water supplementing filter, and the water supplementing filter filters sediment in the external water source, so that sufficient water in the water delivery tank can be used for cleaning and dedusting;
(2) The staff judges the order of cleaning the evaporators or condensers at each stage: according to the pollution severity degree of the surfaces of the evaporators or condensers at all levels, sequentially cleaning the evaporators or condensers at all levels from high to low by sequentially opening electromagnetic valves on the corresponding water spraying paths of the corresponding evaporators or condensers according to time sequence;
(3) And controlling all the linear spray pipes to reciprocate left and right: the staff controls the water spraying driving mechanism to work so as to realize the left-right reciprocating movement of the linear water spraying pipe;
(4) Water is delivered to the linear water spray pipe: the staff starts the water delivery pump, and water in the water delivery tank sequentially passes through the water delivery pump, the instant electric water heater, the water spraying branch, the connecting hose, the vertical water diversion pipe, the horizontal water diversion pipe and the linear water spraying pipe, and finally the water flow is sprayed to the evaporator or the condenser through a nozzle on the linear water spraying pipe;
(5) Cleaning the evaporator or condenser: in the cleaning process, the two linear water spray pipes reciprocate left and right under the drive of the water spray driving mechanism, and simultaneously, the two linear water spray pipes uniformly spray high-pressure water supplied by the water delivery pump into fin gaps of the evaporator or the condenser in two rows, the water flow direction of the two linear water spray pipes is parallel to the fins, and the water flow penetrates through the fins to sufficiently clean and remove dust from the evaporator or the condenser;
(6) Backwater and filtering: the cleaned water falls into a backwater collecting tank, a worker starts a backwater pump, the water in the backwater collecting tank flows back into a water delivery tank through a backwater pipeline, a backwater filtering water tank, the backwater pump and a backwater filter in sequence, water resources are recycled, the returned water is filtered in a three-stage sediment settling tank in the backwater filtering water tank for the first time, and the returned water is filtered through the backwater filter for the second time;
(7) After the cleaning and dedusting work is completed, the staff closes the water delivery pump, the instant electric water heater, each electromagnetic valve, the driving motor and the backwater pump.
The specific steps of the step (2) are as follows:
under the general condition, the operation environment of the first-stage evaporator or condenser is the worst, the operation environment of the last stage is the best, a worker firstly opens the electromagnetic valve on the water spraying branch corresponding to the first-stage evaporator or condenser, firstly cleans the first-stage evaporator or condenser, the water spraying pressure at the moment is the strongest, the flushing effect is the best, and after a period of time, the electromagnetic valve on the water spraying branch corresponding to the next-stage evaporator or condenser is opened, and finally, the electromagnetic valve on the water spraying branch corresponding to the last-stage evaporator or condenser is opened, so that the first-stage evaporator or condenser with the surface being the most dirty is fully cleaned, and meanwhile, the waste of water resources on the evaporator or condenser with the cleaner surface is avoided.
The specific steps of the step (3) are as follows:
the staff starts driving motor, driving motor corotation and drive driving sprocket rotate, driving sprocket drives drive chain and driven sprocket and rotates, the spray pipe branch of fixing on drive chain is along spray pipe removal guide rail side-to-side sliding, when the spray pipe branch moves to right side position from the left hand side and touches right travel switch, driving motor reverses, and drive spray pipe branch from right hand side to move, when the spray pipe branch touches left travel switch, driving motor corotation, so cyclic reciprocation realizes the reciprocating motion of the straight line spray pipe of connecting on the spray pipe branch, wherein, coupling hose guarantees the normal transport of straight line spray pipe removal in-process water route.
In the step (4), when an evaporator or a condenser for drying a product with high sugar content is cleaned, a worker turns on an instant electric water heater to heat cleaning water, and the hot water dissolves sugar attached to the evaporator or the condenser and washes away the sugar; when the cleaning effect is poor only by using clear water, a worker fills the cleaning agent into the water delivery tank through the filling opening.
By adopting the technical scheme, the invention has the following advantages:
the water spray driving mechanism enables water sprayed by the linear water spray pipe to be uniformly and repeatedly sprayed on the evaporator or the condenser, the water spray is free of dead angles, the cleaning is uniform, the descaling is clean, and the normal operation of the heat pump system can be effectively ensured; the evaporator and condenser air path sealing structure can realize the sealing of the air path in the operation of the heat pump system, and reduce the heat leakage of the heat pump system.
The arrangement of the water spraying shunt can be used when the water spraying mechanism works, and the electromagnetic valves on the corresponding water spraying shunt of the corresponding evaporators or condensers can be sequentially opened according to the difference of the surface dirt degree of the evaporators or condensers at all levels from high to low according to the dirt degree so as to clean the evaporators or condensers at all levels to ensure the cleaning and dust removing effects. If the evaporators or condensers of the stages are simultaneously rinsed, the evaporators or condensers of the stages are rinsed under the same water pressure regardless of the degree of surface contamination. For evaporators or condensers with high surface fouling, they require a higher water pressure and a higher water volume to be flushed clean. For evaporators or condensers with low surface fouling, they require lower water pressure and less water volume to be flushed clean. To flush different evaporators or condensers at the same water pressure, it is necessary to design the water pressure and the water quantity required by the evaporator or condenser with the highest surface dirt degree to ensure the flushing effect, which causes waste of water resources and energy (energy is consumed for lifting the water pressure).
The method sequentially opens the electromagnetic valves so as to sequentially clean the evaporators or the condensers at all levels according to the order of the dirt degree from high to low, and the technical scheme ensures that the dirty evaporators or the condensers are washed under higher water pressure, the clean evaporators or the condensers are washed under lower water pressure, and the evaporators or the condensers are matched with the optimal washing water pressure according to the surface dirt degree, thereby greatly improving the water spraying effect and saving energy and water resources.
The vertical water diversion pipes and the plurality of transverse water diversion pipes are arranged to ensure that the water pressure supplied to the nozzles is uniform, so that water flow can be uniformly sprayed to the surface of the evaporator or the condenser and is cleaned, the surface of the evaporator or the condenser is cleaned uniformly, and the scale is removed cleanly.
When a heat pump drying system is used for drying products with high content of sticky substances such as sugar, such as dates and candies, the sticky substances such as sugar are adhered to an evaporator or a condenser, the cleaning effect is poor by only using cold water, namely, the arrangement of the hot type electric water heater can heat water under the condition, and when the evaporator or the condenser is cleaned by hot water, the sticky substances such as sugar can be dissolved by the hot water and then washed away along with water flow, so that the cleaning effect is good.
The three-stage sediment settling tank and the two stainless steel filtering gauze meshes with the sizes sequentially reduced along the water flow direction are arranged in the backwater filtering water tank, so that the backwater is subjected to graded filtering, and the backwater cleaning effect is improved; the linear spray pipe assembly and the water spraying driving mechanism of the device are arranged in the equipment, so that the distance between heat exchangers (namely the evaporator or the condenser) can be effectively shortened, and the external dimension of the equipment is reduced.
In summary, the invention can automatically clean the evaporator or the condenser working in a severe environment, solves the problem of ash on the surface area of the evaporator or the condenser, effectively ensures the normal operation of the heat pump system, and can save water resources.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic view of the water jet drive mechanism of the present invention;
FIG. 3 is a schematic view of a straight sprinkler tube according to the present invention;
FIG. 4 is an enlarged partial schematic view at A in FIG. 2;
FIG. 5 is an enlarged partial schematic view at B in FIG. 3;
fig. 6 is a top view of a horizontal seal plate in the present invention.
Detailed Description
In the prior art, a plurality of stages of evaporators or condensers 7 which are vertically arranged and sequentially arranged at intervals from front to back are arranged in a case of a heat pump drying system, as shown in fig. 1 to 6, the left side of fig. 2 is taken as the left side of the invention, the cleaning device of the evaporators or condensers in the heat pump drying system comprises a water spraying mechanism, the water spraying mechanism comprises a water supplementing filter 1, a water delivery tank 2, a water delivery pump 3, an instant heating type electric water heater 4, a plurality of water spraying branches 5, a plurality of connecting hoses 6, a plurality of groups of linear water spraying pipe assemblies for spraying water to the evaporators or condensers 7, a water return pipeline 8, a water return filtering tank 9, a water return pump 10 and a water return filter 11, a water adding port 12 for adding cleaning agent is arranged on the water delivery tank 2, the water inlet end of the water supplementing filter 1 is connected with an external water source through a pipeline, the water outlet end of the water supplementing filter 1 is connected with the water inlet of the water delivery tank 2 through a pipeline, a water delivery pipeline 13 is connected between the water delivery tank 2 and each water spraying branch 5, the water outlet end of the water delivery pipeline 13 is connected with the water inlet end of each water spraying branch 5, the water delivery pump 3 and the instant heating type electric water heater 4 are connected in series in the water delivery pipeline 13, the water outlet end of each water spraying branch 5 is respectively connected with a group of linear spray pipe assemblies through a connecting hose 6, each group of linear spray pipe assemblies is arranged corresponding to the primary evaporator or condenser 7, the linear spray pipe assemblies are arranged in the case and positioned at the front side of the corresponding evaporator or condenser 7, the water spraying direction of the linear spray pipe assemblies faces the surface of the evaporator or condenser 7, the bottom of the case provided with the evaporator or condenser 7 is provided with a backwater collecting tank 14, the water inlet end of the backwater pipeline 8 is connected with the backwater collecting tank 14, the water outlet end of the water return pipeline 8 is communicated with one side of the water return filtering water tank 9, the other side of the water return filtering water tank 9 is communicated with the water inlet end of the water return pump 10 through a pipeline, the water outlet end of the water return pump 10 is communicated with the water delivery water tank 2 through a pipeline, and the water return filter 11 is connected in series on the pipeline between the water return pump 10 and the water delivery water tank 2;
the number of the water spraying branches 5 is matched with the number of stages of the evaporator or the condenser 7, and each water spraying branch 5 is provided with an electromagnetic valve 15 for opening or closing the water spraying branch 5;
the inside of a case provided with the evaporator or the condenser 7 is provided with a plurality of water spraying driving mechanisms for driving the linear water spraying pipe assemblies to reciprocate along the left-right direction, and one water spraying driving mechanism corresponds to one group of linear water spraying pipe assemblies.
The water spraying driving mechanism comprises a water spraying pipe moving guide rail 16, a water spraying pipe supporting rod 17, a driving motor, a driving chain wheel 19, a driving chain 20, a driven chain wheel 21, a left travel switch 22 and a right travel switch 23, wherein the driving motor is in the prior art, the driving motor is not shown in the drawing, the water spraying pipe moving guide rail 16, the driving motor, the left travel switch 22 and the right travel switch 23 are fixedly arranged in a machine case, the driving chain wheel 19 and the driven chain wheel 21 are respectively and rotatably connected in the machine case through rotating shafts, the rotating shafts are in the prior art, the water spraying pipe moving guide rail 16 is arranged above an evaporator or a condenser 7 in the left-right horizontal direction, the water spraying pipe supporting rod 17 is slidably connected in the water spraying pipe moving guide rail 16, a linear water spraying pipe assembly is vertically and fixedly connected to the lower side of the water spraying pipe supporting rod 17 through a connecting piece 24, the driving chain wheel 19 is in transmission connection with the driving motor, the driving chain wheel 19 is in transmission connection with the driven chain wheel 21 through the driving chain 20, the head end and the tail end of the driving chain 20 are disconnected, the left end and the right end of the water spraying pipe supporting rod 17 is fixedly connected between the head end and the tail end of the driving chain 20, the left end of the driving chain 20 and the tail end of the driving chain, the left end 22 is arranged on the left end and the right end of the water spraying pipe supporting rod 17 is arranged on the side of the evaporator or the condenser 7, the left end is arranged on the left side of the evaporator or the condenser 7, and the condenser is arranged on the left side of the evaporator or the condenser 7, and the left side is arranged on the left side or the evaporator or the condenser 23, and the condenser is arranged on the left side and the front end of the evaporator and 23.
The invention also comprises an evaporator and condenser air path sealing structure, the evaporator and condenser air path sealing structure comprises a plurality of horizontal sealing plates 25 which are sequentially arranged from front to back, the left side and the right side of each horizontal sealing plate 25 are fixed on the inner side wall of the case and are arranged above the evaporator or the condenser 7, the front side edge of the foremost horizontal sealing plate 25 and the rear side edge of the rearmost horizontal sealing plate 25 are fixed on the inner side wall of the case, a gap 34 is arranged between every two front and rear adjacent horizontal sealing plates 25, rubber sealing strips 26 fixed on the side edges of the horizontal sealing plates 25 are arranged on the front and rear sides of the gap 34, and a connecting piece 24 is connected between the front and rear two rubber sealing strips 26 in a sliding way.
Each group of linear spray pipe assemblies comprises a vertical water distribution pipe 27, a plurality of horizontal water distribution pipes 28 and two linear spray pipes 29 which are arranged side by side left and right, the vertical water distribution pipes 27 are communicated with the water outlet ends of the connecting hose 6 and are vertically arranged between the two linear spray pipes 29, the plurality of horizontal water distribution pipes 28 are divided into three rows and are uniformly arranged on the left side and the right side of the vertical water distribution pipes 27 along the up-down direction, each row of horizontal water distribution pipes comprises a left horizontal water distribution pipe and a right horizontal water distribution pipe, the two ends of the left horizontal water distribution pipe are respectively communicated with the vertical water distribution pipes 27 and the linear spray pipes 29 positioned on the left side, the two ends of the right horizontal water distribution pipes are respectively communicated with the vertical water distribution pipes 27 and the linear spray pipes 29 positioned on the right side, the connecting piece 24 is a right-angle bent plate, each linear spray pipe 29 is fixedly connected to the lower side of the spray pipe strut 17 through two right-angle bent plates, the height of the linear spray pipes 29 is matched with the height of the evaporator or the condenser 7, a plurality of nozzles are uniformly distributed on the spray pipes 29 from top to bottom, and the directions of the nozzles are uniformly distributed on the linear spray pipes 29 in parallel to the fins. The nozzles are of prior art and are not shown in the figures. The arrangement of the vertical water diversion pipes and the plurality of transverse water diversion pipes makes the water pressure supplied to the nozzles uniform, so that the water flow can be uniformly sprayed to the surface of the evaporator or the condenser 7 and cleaned.
Two vertically arranged stainless steel filter gauze nets 30 are arranged in the backwater filter water tank 9, the backwater filter water tank 9 is divided into a first-stage sediment precipitation tank 31, a second-stage sediment precipitation tank 32 and a third-stage sediment precipitation tank 33 from left to right by the two stainless steel filter gauze nets 30, the water outlet end of the backwater pipeline 8 is communicated with the first-stage sediment precipitation tank 31, and the water inlet end of the backwater water pump 10 is communicated with the third-stage sediment precipitation tank 33.
The mesh sizes of the two stainless steel filter screens 30 are sequentially reduced in the water flow direction.
The cleaning method of the cleaning device of the evaporator or the condenser in the heat pump drying system comprises the following steps:
(1) Water tank 2 stores water: the external water source enters the water delivery tank 2 after being filtered by the water supplementing filter 1, and the water supplementing filter 1 filters sediment in the external water source, so that sufficient water can be used for cleaning and dedusting in the water delivery tank 2;
(2) The staff decides the order of cleaning the evaporators or condensers 7 of the various stages: according to the pollution severity degree of the surfaces of the evaporators or condensers 7 at all levels, sequentially cleaning the evaporators or the condensers 7 at all levels from high to low by sequentially opening the electromagnetic valves 15 on the corresponding water spraying branches 5 of the corresponding evaporators or condensers 7 according to time sequence, namely cleaning the evaporator or the condenser 7 with the most polluted surface firstly and cleaning the evaporator or the condenser 7 with the cleanest surface finally;
(3) Controlling all the straight water spray pipes 29 to reciprocate left and right: the staff controls the water spraying driving mechanism to work so as to realize the left-right reciprocating movement of the linear water spraying pipe 29;
(4) Water is delivered to the straight water spray pipe 29: the staff starts the water delivery pump 3, water in the water delivery tank 2 sequentially passes through the water delivery pump 3, the instant electric water heater 4, the water spray branch 5, the connecting hose 6, the vertical water diversion pipe 27, the horizontal water diversion pipe 28 and the linear water spray pipe 29, and finally water is sprayed to the evaporator or the condenser 7 through a nozzle on the linear water spray pipe 29;
(5) Cleaning the evaporator or condenser 7: in the cleaning process, the two linear water spray pipes 29 are driven by the water spray driving mechanism to reciprocate left and right, meanwhile, the two linear water spray pipes 29 divide high-pressure water provided by the water delivery pump 3 into two rows and uniformly spray the two rows of water into fin gaps of the evaporator or the condenser 7, the water flow direction of the two rows of water is parallel to the fins, and the water flow penetrates through the fins to sufficiently clean and remove dust from the evaporator or the condenser 7;
(6) Backwater and filtering: the cleaned water falls into a backwater collecting tank 14, a worker starts a backwater pump 10, the water in the backwater collecting tank 14 flows back into the water delivery tank 2 through a backwater pipeline 8, a backwater filtering water tank 9, the backwater pump 10 and a backwater filter 11 in sequence, water resources are recycled, the returned water is filtered once in a three-stage sediment settling tank in the backwater filtering water tank 9, and secondary filtration is carried out through the backwater filter 11;
(7) After the cleaning and dedusting work is completed, the worker closes the water delivery pump 3, the instant electric water heater 4, each electromagnetic valve 15, the driving motor and the backwater pump 10.
The specific steps of the step (2) are as follows:
under normal conditions, the operation environment of the first-stage evaporator or condenser 7 is the worst, the operation environment of the last stage is the best, the worker firstly opens the electromagnetic valve 15 on the water spraying branch 5 corresponding to the first-stage evaporator or condenser 7, firstly cleans the first-stage evaporator or condenser 7, the water spraying pressure at the moment is the strongest, the flushing effect is the best, after a period of time, the electromagnetic valve 15 on the water spraying branch 5 corresponding to the next-stage evaporator or condenser 7 is opened, and finally, the electromagnetic valve 15 on the water spraying branch 5 corresponding to the last-stage evaporator or condenser 7 is opened, so that the first-stage evaporator or condenser 7 with the most dirty surface is fully cleaned, and meanwhile, the waste of water resources on the evaporator or condenser 7 with the cleaner surface is avoided.
The specific steps of the step (3) are as follows:
the staff starts driving motor, driving motor corotation and drive driving sprocket 19 rotation, driving sprocket 19 drives drive chain 20 and driven sprocket 21 rotation, spray pipe branch 17 that fixes on drive chain 20 slides along spray pipe removal guide rail 16 side to side, when spray pipe branch 17 moves to the right side position from the left hand side and touches right travel switch 23, driving motor reverses, drive spray pipe branch 17 from right side to left side removes, when spray pipe branch 17 touches left travel switch 22, driving motor corotation, so cyclic reciprocation realizes the reciprocating motion of sharp spray pipe 29, wherein, coupling hose 6 guarantees the normal transportation of straight line spray pipe 29 water route in-process of moving.
In the step (4), when an evaporator or a condenser 7 for drying a product with high sugar content is cleaned, a worker turns on an instant electric water heater 4 to heat cleaning water, and the hot water dissolves sugar attached to the evaporator or the condenser 7 and washes away the dissolved sugar; when the cleaning effect is poor only by using clear water, a worker fills the cleaning agent into the water delivery tank 2 through the filling port 12.
The instant heating type electric water heater 4, the stainless steel filtering gauze 30 and the nozzle are all conventional devices, and the specific structure is not described in detail.
The present embodiment is not limited in any way by the shape, material, structure, etc. of the present invention, and any simple modification, equivalent variation and modification made to the above embodiments according to the technical substance of the present invention are all included in the scope of protection of the technical solution of the present invention.
Claims (4)
1. The cleaning method of the cleaning device of the evaporator or the condenser in the heat pump drying system is characterized in that a plurality of stages of evaporators or condensers which are vertically arranged and sequentially arranged at intervals from front to back are arranged in a machine box of the heat pump drying system, and the cleaning device is characterized in that:
the cleaning device of the evaporator or the condenser in the heat pump drying system comprises a water spraying mechanism, wherein the water spraying mechanism comprises a water supplementing filter, a water delivery tank, a water delivery pump, an instant electric water heater, a plurality of water spraying branches, a plurality of connecting hoses, a plurality of groups of linear spray pipe assemblies for spraying water to the evaporator or the condenser, a water return pipeline, a water return filter tank, a water return pump and a water return filter;
the number of the water spraying branches is matched with the number of stages of the evaporator or the condenser, and each water spraying pipeline is provided with an electromagnetic valve for opening or closing the water spraying branches;
a plurality of water spraying driving mechanisms for driving the linear water spraying pipe assemblies to reciprocate along the left-right direction are arranged in a case for installing the evaporator or the condenser, and one water spraying driving mechanism corresponds to one group of linear water spraying pipe assemblies;
the water spraying driving mechanism comprises a water spraying pipe moving guide rail, a water spraying pipe supporting rod, a driving motor, a driving sprocket, a driving chain, a driven sprocket, a left travel switch and a right travel switch, wherein the water spraying pipe moving guide rail, the driving motor, the left travel switch and the right travel switch are fixedly arranged in a case, the driving sprocket and the driven sprocket are respectively and rotatably connected in the case through rotating shafts, the water spraying pipe moving guide rail is arranged above an evaporator or a condenser along the left-right horizontal direction, the water spraying pipe supporting rod is slidably connected in the water spraying pipe moving guide rail, a linear water spraying pipe assembly is vertically and fixedly connected to the lower side of the water spraying pipe supporting rod through a connecting piece, the driving sprocket is in transmission connection with the driving motor, the driving sprocket is in transmission connection with the driven sprocket through the driving chain, the head end and the tail end of the driving chain are disconnected, the left end and the right end of the water spraying pipe supporting rod are fixedly connected between the head end and the tail end of the driving chain, the left travel switch is arranged on the left side of the water spraying pipe moving guide rail and is positioned above the left end of the evaporator or the condenser, the right travel switch is arranged on the right side of the water spraying pipe moving guide rail and is positioned above the right end of the evaporator or the condenser, and the left travel switch is respectively connected with the driving travel switch through wires;
the evaporator and condenser air path sealing structure comprises a plurality of horizontal sealing plates which are sequentially arranged from front to back, the left side edge and the right side edge of each horizontal sealing plate are fixed on the inner side wall of the case and are arranged above the evaporator or the condenser, the front side edge of the foremost horizontal sealing plate and the rear side edge of the rearmost horizontal sealing plate are both fixed on the inner side wall of the case, a gap is arranged between every two front and rear adjacent horizontal sealing plates, rubber sealing strips fixed on the side edges of the horizontal sealing plates are arranged on the front and rear sides of the gap, and a connecting piece is connected between the front and rear rubber sealing strips in a sliding mode;
each group of linear spray pipe assembly comprises a vertical water distribution pipe, a plurality of horizontal water distribution pipes and two linear spray pipes which are arranged side by side left and right, wherein the vertical water distribution pipes are communicated with the water outlet end of a connecting hose and are vertically arranged between the two linear spray pipes;
two stainless steel filter gauze nets which are vertically arranged are arranged in the backwater filter water tank, the backwater filter water tank is divided into a first-stage sediment precipitation tank, a second-stage sediment precipitation tank and a third-stage sediment precipitation tank from left to right by the two stainless steel filter gauze nets, the water outlet end of the backwater pipeline is communicated with the first-stage sediment precipitation tank, and the water inlet end of the backwater water pump is communicated with the third-stage sediment precipitation tank;
the mesh sizes of the two stainless steel filtering gauze are sequentially reduced along the water flow direction;
the cleaning method comprises the following steps:
(1) Water storage of the water delivery water tank: the external water source enters the water delivery tank after being filtered by the water supplementing filter, and the water supplementing filter filters sediment in the external water source, so that sufficient water in the water delivery tank can be used for cleaning and dedusting;
(2) The staff judges the order of cleaning the evaporators or condensers at each stage: according to the pollution severity degree of the surfaces of the evaporators or condensers at all levels, sequentially cleaning the evaporators or condensers at all levels from high to low by sequentially opening electromagnetic valves on the corresponding water spraying paths of the corresponding evaporators or condensers according to time sequence;
(3) And controlling all the linear spray pipes to reciprocate left and right: the staff controls the water spraying driving mechanism to work so as to realize the left-right reciprocating movement of the linear water spraying pipe;
(4) Water is delivered to the linear water spray pipe: the staff starts the water delivery pump, and water in the water delivery tank sequentially passes through the water delivery pump, the instant electric water heater, the water spraying branch, the connecting hose, the vertical water diversion pipe, the horizontal water diversion pipe and the linear water spraying pipe, and finally the water flow is sprayed to the evaporator or the condenser through a nozzle on the linear water spraying pipe;
(5) Cleaning the evaporator or condenser: in the cleaning process, the two linear water spray pipes reciprocate left and right under the drive of the water spray driving mechanism, and simultaneously, the two linear water spray pipes uniformly spray high-pressure water supplied by the water delivery pump into fin gaps of the evaporator or the condenser in two rows, the water flow direction of the two linear water spray pipes is parallel to the fins, and the water flow penetrates through the fins to sufficiently clean and remove dust from the evaporator or the condenser;
(6) Backwater and filtering: the cleaned water falls into a backwater collecting tank, a worker starts a backwater pump, the water in the backwater collecting tank flows back into a water delivery tank through a backwater pipeline, a backwater filtering water tank, the backwater pump and a backwater filter in sequence, water resources are recycled, the returned water is filtered in a three-stage sediment settling tank in the backwater filtering water tank for the first time, and the returned water is filtered through the backwater filter for the second time;
(7) After the cleaning and dedusting work is completed, the staff closes the water delivery pump, the instant electric water heater, each electromagnetic valve, the driving motor and the backwater pump.
2. The method for cleaning an evaporator or condenser cleaning device in a heat pump drying system according to claim 1, wherein: the specific steps of the step (2) are as follows:
under the general condition, the operation environment of the first-stage evaporator or condenser is the worst, the operation environment of the last stage is the best, a worker firstly opens the electromagnetic valve on the water spraying branch corresponding to the first-stage evaporator or condenser, firstly cleans the first-stage evaporator or condenser, the water spraying pressure at the moment is the strongest, the flushing effect is the best, and after a period of time, the electromagnetic valve on the water spraying branch corresponding to the next-stage evaporator or condenser is opened, and finally, the electromagnetic valve on the water spraying branch corresponding to the last-stage evaporator or condenser is opened, so that the first-stage evaporator or condenser with the surface being the most dirty is fully cleaned, and meanwhile, the waste of water resources on the evaporator or condenser with the cleaner surface is avoided.
3. The method for cleaning an evaporator or condenser cleaning device in a heat pump drying system according to claim 2, wherein: the specific steps of the step (3) are as follows:
the staff starts driving motor, driving motor corotation and drive driving sprocket rotate, driving sprocket drives drive chain and driven sprocket and rotates, the spray pipe branch of fixing on drive chain is along spray pipe removal guide rail side-to-side sliding, when the spray pipe branch moves to right side position from the left hand side and touches right travel switch, driving motor reverses, and drive spray pipe branch from right hand side to move, when the spray pipe branch touches left travel switch, driving motor corotation, so cyclic reciprocation realizes the reciprocating motion of the straight line spray pipe of connecting on the spray pipe branch, wherein, coupling hose guarantees the normal transport of straight line spray pipe removal in-process water route.
4. A method for cleaning an evaporator or condenser cleaning apparatus in a heat pump drying system according to claim 3, wherein: in the step (4), when an evaporator or a condenser for drying a product with high sugar content is cleaned, a worker turns on an instant electric water heater to heat cleaning water, and the hot water dissolves sugar attached to the evaporator or the condenser and washes away the sugar; when the cleaning effect is poor only by using clear water, a worker fills the cleaning agent into the water delivery tank through the filling opening.
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| CN110653225A (en) * | 2019-09-29 | 2020-01-07 | 无锡巨亿机械有限公司 | Water circulation device for cleaning oil cylinder |
| CN113945111A (en) * | 2021-09-03 | 2022-01-18 | 北京京能科技有限公司 | Automatic flushing method based on external radiator of full-power converter |
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| US20060260654A1 (en) * | 2005-03-15 | 2006-11-23 | Hussmann Corporation | Method and apparatus for cleaning exterior condensers |
| US10539381B2 (en) * | 2015-12-28 | 2020-01-21 | Coil Flow Max, Inc. | Apparatus and method for cleaning HVAC cooling coils |
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| JP2001056198A (en) * | 1999-08-13 | 2001-02-27 | Shin Caterpillar Mitsubishi Ltd | Cooling apparatus of work machine |
| JP2004097936A (en) * | 2002-09-09 | 2004-04-02 | Me Technos Kk | Filter washing device |
| JP2005147428A (en) * | 2003-11-11 | 2005-06-09 | Hitachi Constr Mach Co Ltd | Heat exchanging device |
| KR20120007141U (en) * | 2011-04-08 | 2012-10-17 | 차희천 | Apparatus for washing for fitting in ceiling type air conditioner |
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