Descaling device for evaporative cooler

Abstract

A descaling device of an evaporative cooler comprises a box body, a plurality of heat exchange coils are fixedly installed in the box body, each heat exchange coil comprises a straight pipe and a bent pipe, a spraying device for spraying cold water to the heat exchange coils is arranged on the upper side in the box body, two drain outlets are formed in the bottom of the box body, and an air inlet and an air outlet are sequentially formed in the two sides of the box body. The heat exchanger is characterized in that an installation plate is movably arranged in the box body, a plurality of through holes are formed in the portion, corresponding to the straight pipe portion of the heat exchange coil pipe, of the installation plate, and annular scrapers are arranged in the through holes respectively. The water scale removing device is simple in structure and ingenious in conception, the annular scraper is driven by the driving device to move to remove water scale on the surface of the heat exchange coil, manual scraping is not needed, time and labor are saved, work of a cooler is not affected during scraping, working efficiency is improved, environmental pollution and corrosion to the heat exchange coil are avoided, market requirements can be met, and the water scale removing device is suitable for popularization.

Description

Technical Field

[0001] The utility model belongs to the field of evaporative coolers, in particular to a descaling device for evaporative coolers. Background Art

[0002] The main feature of the evaporative cooler is to use the evaporation of the water film outside the tube to enhance the heat transfer outside the tube. By spraying cold water on the surface of the heat exchange tube, a continuous and uniform water film is formed on the surface of the heat exchange tube. At the same time, air is sucked into the equipment inside the box. The air passes through the heat exchange tube to accelerate the evaporation of the water film on the surface of the heat exchange tube. The evaporation of the water film on the surface of the heat exchange tube absorbs a large amount of heat in the heat exchange tube, so that the heat of the fluid in the heat exchange tube is transferred to the air outside the heat exchange tube through the water film, thereby achieving the purpose of cooling. With the continuous use of the cooler, scale is easily formed on the surface of the heat exchange tube bundle. If it cannot be cleaned in time, the efficiency of heat transfer will be affected. The existing method of cleaning the scale on the surface of the heat exchange tube is to scrape it manually with a scraper or to clean it with a chemical cleaning agent. It is time-consuming and laborious to scrape the scale on the surface of the heat exchange tube manually with a scraper, and the cooler needs to be suspended when scraping the scale, which reduces the working efficiency. When using a chemical cleaning agent for cleaning, if the chemical cleaning agent is used improperly, it will corrode the heat exchange tube, and the wastewater generated after cleaning will pollute the environment. Therefore, we designed a descaling device for an evaporative cooler. Utility Model Content

[0003] The utility model provides an evaporative cooler descaling device, which is used to solve the defects in the prior art.

[0004] The utility model is realized through the following technical solutions:

[0005] A descaling device for an evaporative cooler comprises a box body, in which a plurality of heat exchange coils are fixedly installed, the heat exchange coils comprising a straight tube and a bent tube, a spray device for spraying cold water on the heat exchange coils is provided on the upper side of the interior of the box body, two sewage outlets are provided at the bottom of the box body, air inlets and air outlets are provided on two sides of the box body in sequence, a suction fan is provided at the air inlet, and the suction fan is fixedly installed on the box body, and is characterized in that: a mounting plate is movably provided in the box body, a plurality of through holes are provided on the mounting plate corresponding to the straight tube parts of the heat exchange coils, annular scrapers are respectively provided in the through holes, the inner circumference of the annular scrapers is in contact with the straight tube parts of the heat exchange coils, and a driving device for driving the mounting plate to move left and right is provided on the box body.

[0006] As described above, a descaling device for an evaporative cooler, the driving device includes a reciprocating screw, two reciprocating screws are provided and are rotatably installed in a housing through bearings, two threaded through holes are opened on a mounting plate corresponding to the reciprocating screws, the reciprocating screws are threadedly fitted with the corresponding threaded through holes, one end of the reciprocating screws extends out of the housing and is fixedly installed with coaxial gears, the two gears are connected through an odd number of transmission gears, the transmission gears are rotatably installed on the housing through coaxial bearings, a coaxial motor is fixedly installed on one of the gears, and the motor is fixedly installed on the housing through several connecting rods.

[0007] In the descaling device for an evaporative cooler as described above, the annular scraper is divided into a plurality of identical arc-shaped scrapers, the outer peripheries of the arc-shaped scrapers are fixedly mounted with sliding rods, the inner peripheries of the through holes are provided with a plurality of sliding grooves corresponding to the sliding rods, the sliding rods are slidably mounted in the corresponding sliding grooves, and the arc-shaped scrapers are connected to the inner peripheries of the corresponding through holes via springs.

[0008] As described above, the descaling device for an evaporative cooler comprises a spray device comprising a water pipe, wherein a plurality of water pipes are provided and fixedly mounted on the top of a box body, one side of the water pipes respectively extends out of the box body and is connected to a water inlet pipe, and a portion of the water pipes located in the box body is connected to a plurality of spray heads respectively.

[0009] In the descaling device for an evaporative cooler as described above, filters are fixedly installed on the inner peripheries of the air inlet and the air outlet respectively.

[0010] In the above-mentioned descaling device for an evaporative cooler, the bent pipe portion of the heat exchange coil is cleaned by spraying a chemical cleaning agent.

[0011] The advantages of the utility model are: the utility model has a simple structure and ingenious design. The annular scraper is driven by a driving device to move to remove scale on the surface of the heat exchange coil. There is no need for manual scraping, which saves time and effort. The scraping does not affect the operation of the cooler, thereby improving work efficiency. It will not cause environmental pollution and corrosion to the heat exchange coil, can meet market demand, and is suitable for promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0013] Figure 1 It is a structural schematic diagram of the utility model; Figure 2 yes Figure 1 A-direction view; Figure 3 yes Figure 1 Left view of; Figure 4 yes Figure 1 Partial enlarged view of Ⅰ; Figure 5 yes Figure 2 Ⅱ Partial enlarged view.

[0014] Figure numerals: 1, box body, 2, heat exchange coil, 3, mounting plate, 4, through hole, 5, annular scraper, 6, sewage outlet, 7, air inlet, 8, air outlet, 9, suction fan, 10, slag outlet, 20, reciprocating screw, 21, threaded through hole, 22, gear, 23, transmission gear, 24, motor, 30, slide rod, 31, slide groove, 32, spring, 40, water pipe, 41, nozzle, 50, filter. DETAILED DESCRIPTION

[0015] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0016] A descaling device for an evaporative cooler, such as Figure 1 , 2, 3, 4, and 5, it includes a box body 1, in which a plurality of heat exchange coils 2 are fixedly installed, and the plurality of heat exchange coils 2 are distributed front and back in the box body 1, and the heat exchange coils 2 include two parts, a straight pipe and a curved pipe, and the upper side of the box body 1 is provided with a spray device for spraying cold water on the heat exchange coils 2, and two sewage outlets 6 are provided at the bottom of the box body 1, and the two sewage outlets 6 are symmetrically distributed on the left and right, and air inlets 7 and air outlets 8 are provided on both sides of the box body 1 in turn, and a suction fan 9 is provided at the air inlet 7, and the suction fan 9 is fixedly installed It is installed on the box body 1, and is characterized in that: a mounting plate 3 is movably provided inside the box body 1, the bottom of the mounting plate 3 is fitted with the bottom of the inner wall of the box body 1, a plurality of through holes 4 are provided on the mounting plate 3 corresponding to the straight tube part of the heat exchange coil 2, and an annular scraper 5 is provided in each of the through holes 4, the inner periphery of the annular scraper 5 is fitted with the straight tube part of the heat exchange coil 2, the straight tube part of the heat exchange coil 2 is coaxially arranged with the corresponding through hole 4 and the annular scraper 5, and a driving device for driving the mounting plate 3 to move left and right is provided on the box body 1. The utility model has a simple structure and an ingenious design. The driving device drives the annular scraper 5 to move to remove the scale on the surface of the heat exchange coil 2, and there is no need for manual scraping, which saves time and effort, and the scraping does not affect the operation of the cooler, thereby improving the work efficiency, and will not cause environmental pollution and corrosion to the heat exchange coil 2. It can meet market demand and is suitable for promotion. When the utility model is used, the suction fan 9 is started, and the suction fan 9 sucks air into the box body 1 through the air inlet 7, and sprays cold water on the surfaces of the heat exchange coils 2 through the spray device. The water on the surface of the heat exchange coils 2 is accelerated to evaporate under the flow of air, and the heat of the fluid inside the heat exchange coils 2 is taken away, so that the fluid inside the heat exchange coils 2 is cooled, and the heat exchange is completed. The air with heat is discharged from the box body 1 through the air outlet 8, and the water dropped at the bottom of the box body 1 is discharged from the box body 1 through the drain outlet 6; when scale is generated on the surface of the heat exchange coils 2, the mounting plate 3 is driven to move back and forth left and right by the driving device, and the reciprocating movement of the mounting plate 3 drives the annular scraper 5 installed on the mounting plate 3 to move back and forth left and right. The reciprocating movement of the annular scraper 5 to the left and right cleans the scale on the surface of the heat exchange coils 2, and the cleaned scale falls on the bottom of the box body 1. When the mounting plate 3 moves left and right, the scale dropped on the bottom of the box body 1 can be pushed to the drain outlets 6 on the left and right sides, and discharged from the box body 1 through the drain outlet 6.

[0017] Specifically, as shown in the figure, the driving device described in this embodiment includes a reciprocating screw 20, two reciprocating screws 20 are provided and are rotatably installed in the housing 1 through bearings, two threaded through holes 21 are opened on the mounting plate 3 corresponding to the reciprocating screw 20, and the reciprocating screw 20 is threadedly installed with the corresponding threaded through holes 21, one end of the reciprocating screw 20 extends out of the housing 1 and is fixedly installed with a coaxial gear 22, the reciprocating screw 20 passes through the reserved hole on the housing 1, and is rotatably installed in the corresponding reserved hole through bearings, the two gears 22 are connected by an odd number of transmission gears 23, in this embodiment, the number of transmission gears 23 is three, and the transmission gears 23 are rotatably installed on the housing 1 through coaxial bearings, one of the gears 22 is fixedly installed with a coaxial motor 24, and the motor 24 is fixedly installed on the housing 1 through several connecting rods. Start the motor 24, and the output shaft of the motor 24 rotates to drive the gear 22 fixedly connected thereto to rotate. The gear 22 drives another gear 22 to rotate synchronously through several transmission gears 23. The gear 22 drives the two reciprocating screws 20 to rotate synchronously, thereby driving the mounting plate 3 and the annular scraper 5 on the mounting plate 3 to move left and right.

[0018] Specifically, as shown in the figure, the annular scraper 5 described in this embodiment is respectively divided into several completely identical arc-shaped scrapers. In this embodiment, one annular scraper 5 is equally divided into four completely identical arc-shaped scrapers. The outer peripheries of the arc-shaped scrapers are respectively fixedly installed with slide rods 30, and the inner peripheries of the through holes 4 are respectively provided with several slide grooves 31 corresponding to the slide rods 30. The slide rods 30 are slidably installed in the corresponding slide grooves 31. The arc-shaped scrapers are respectively connected to the inner peripheries of the corresponding through holes 4 through springs 32. The springs 32 are respectively mounted on the outer peripheries of the corresponding slide rods 30, one end of the spring 32 is fixedly connected to the outer periphery of the corresponding arc-shaped scraper, and the other end of the spring 32 is fixedly connected to the inner periphery of the corresponding through hole 4. When the annular scraper 5 moves left and right to scrape off the scale on the periphery of the heat exchange coil 2, if it encounters firm scale that is difficult to remove, the arc-shaped scraper moves in the direction away from the axis of the through hole 4 under the push of the scale. The movement of the arc-shaped scraper drives the slide rod 30 to slide outward along the corresponding slide groove 31, and the corresponding spring 32 is compressed. The firm scale is removed by the reciprocating scraping of the annular scraper 5; the annular scraper 5 is flexibly connected to the corresponding through hole 4 to prevent the firm scale from damaging the annular scraper 5 or the annular scraper 5 from damaging the heat exchange coil 2 when scraping off the firm scale.

[0019] Further, as shown in the figure, the spray device of this embodiment includes a water pipe 40, which is provided in plurality and fixedly mounted on the top of the housing 1, one side of the water pipe 40 extends out of the housing 1 and is connected to a water inlet pipe, which is not shown in the figure, and the portion of the water pipe 40 located in the housing 1 is connected to a plurality of nozzles 41. Water is supplied to the water pipe 40 through the water inlet pipe, and the water in the water pipe 40 is sprayed toward the periphery of the heat exchange coil 2 through the nozzle 41.

[0020] Further, as shown in the figure, the inner peripheries of the air inlet 7 and the air outlet 8 in this embodiment are respectively fixed with filter screens 50. The filter screens 50 can block impurities in the outside air and prevent them from entering the box 1 and being deposited on the outer periphery of the heat exchange coil 2, thereby preventing the heat exchange effect of the heat exchange coil 2 from being affected.

[0021] Furthermore, as shown in the figure, the bent pipe part of the heat exchange coil 2 in this embodiment is cleaned by spraying a chemical cleaning agent. The operation of the evaporative cooler is stopped, and the chemical cleaning agent is sprayed by a spray device to descale the bent pipe part of the heat exchange coil 2.

[0022] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. An evaporative cooler descaling device, comprising a housing (1), wherein a plurality of heat exchange coils (2) are fixedly installed in the housing (1), wherein the heat exchange coils (2) comprise two parts, namely a straight pipe and a curved pipe, wherein a spray device for spraying cold water on the heat exchange coils (2) is provided on the upper side of the housing (1), wherein two sewage outlets (6) are provided at the bottom of the housing (1), wherein an air inlet (7) and an air outlet (8) are provided on both sides of the housing (1), wherein a suction fan (9) is fixedly installed on the housing (1), Features: A mounting plate (3) is movably provided in the housing (1), and a plurality of through holes (4) are provided on the mounting plate (3) corresponding to the straight pipe portion of the heat exchange coil (2). Annular scrapers (5) are respectively provided in the through holes (4), and the inner circumference of the annular scraper (5) is in contact with the straight pipe portion of the heat exchange coil (2). A driving device for driving the mounting plate (3) to move left and right is provided on the housing (1).

2. An evaporative cooler descaling device according to claim 1, Features: The driving device comprises a reciprocating screw (20), wherein two reciprocating screws (20) are provided and are rotatably mounted in a housing (1) via bearings, two threaded through holes (21) are provided on a mounting plate (3) corresponding to the reciprocating screws (20), the reciprocating screws (20) are threadedly matched with the corresponding threaded through holes (21) for mounting, one end of the reciprocating screw (20) respectively extends out of the housing (1) and is fixedly mounted with a coaxial gear (22), the two gears (22) are connected in transmission via an odd number of transmission gears (23), the transmission gears (23) are rotatably mounted on the housing (1) via coaxial bearings, a coaxial motor (24) is fixedly mounted on one of the gears (22), and the motor (24) is fixedly mounted on the housing (1) via a plurality of connecting rods.

3. The descaling device for an evaporative cooler according to claim 1, Features: The annular scraper (5) is divided into a plurality of identical circular arc scrapers, the outer peripheries of the circular arc scrapers are fixedly mounted with slide bars (30), the inner peripheries of the through holes (4) are provided with a plurality of slide grooves (31) corresponding to the slide bars (30), the slide bars (30) are slidably mounted in the corresponding slide grooves (31), and the circular arc scrapers are connected to the inner peripheries of the corresponding through holes (4) via springs (32).

4. The descaling device for an evaporative cooler according to claim 1, Features: The spray device comprises a water pipe (40), wherein a plurality of water pipes (40) are provided and fixedly mounted on the top of the box (1), one side of the water pipe (40) respectively extends out of the box (1) and is connected to a water inlet pipe, and a portion of the water pipe (40) located inside the box (1) is connected to a plurality of spray heads (41) respectively.

5. The descaling device for an evaporative cooler according to claim 1, Features: Filter screens (50) are fixedly mounted on the inner circumferences of the air inlet (7) and the air outlet (8), respectively.

6. The descaling device for an evaporative cooler according to claim 1, Features: The bent pipe portion of the heat exchange coil (2) is cleaned by spraying a chemical cleaning agent.

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