CN115193190A

CN115193190A - Novel wet dust removal system for open bulk cargo storage yard

Info

Publication number: CN115193190A
Application number: CN202210817992.1A
Authority: CN
Inventors: 白永锁; 尚鹏翔
Original assignee: Ningxia Qingtongxia Cement Co ltd
Current assignee: Ningxia Qingtongxia Cement Co ltd
Priority date: 2022-07-12
Filing date: 2022-07-12
Publication date: 2022-10-18

Abstract

The invention discloses a novel wet type dust removal system for an open bulk cargo storage yard, which belongs to the technical field of dust fall of the open bulk cargo storage yard and aims at solving the problems of lower dust fall range of the open bulk cargo storage yard and waste of water resources; according to the invention, the water source in the water tank is pressurized by the water pump and sprayed by the atomizing spray head, so that the dust falling range of the open bulk cargo yard can be greatly improved, the purpose of more comprehensive dust falling of the open bulk cargo yard can be achieved, the application range is wider, and the dust flying condition of the open bulk cargo yard can be better controlled.

Description

Novel wet dust removal system for open bulk cargo storage yard

Technical Field

The invention belongs to the technical field of dust fall of open bulk cargo storage yards, and particularly relates to a novel wet dust removal system for an open bulk cargo storage yard.

Background

In the process of loading, unloading or piling up an open bulk material yard, a large amount of dust can be generated due to the carrying function of wind when strong wind occurs, and the surrounding environment is seriously polluted, and the report of environmental protection key city environmental air quality condition in the first half year of 2011 issued by the environmental protection department shows that in the first half year of this year, the number of cities with excessive average concentration of inhalable particles in the air is 35 and accounts for 31 percent. Dust pollution generated by an open bulk cargo yard is a main source of inhalable particles in the air;

open-air bulk cargo store yard dust pelletizing system among the prior art often adopts independent fixed formula to spray the water smoke to the fixed point region to the completion is to the purpose of open-air bulk cargo store yard dust fall, but its in the application of reality, it still exists following not enoughly:

(1) in the prior art, the dust fall area of an open bulk cargo storage yard is small, the angle of a sprayed water mist point is difficult to adjust, the dust fall effect is difficult to realize in too many areas, the raised dust pollution is difficult to control, and the application range is low;

(2) open-air bulk cargo store yard among the prior art is owing to adopt the water source to reach wet process dust fall's purpose, but is used for open-air bulk cargo store yard dust fall work because of too much water source, leads to the condition of water waste to show more, has not only increased to open-air bulk cargo store yard dust fall working cost, because quality of water uses the damage that easily causes the device under the non-filterable condition moreover.

Therefore, a novel wet dust removal system for an open bulk cargo yard is needed, and the problems that the dust fall range of the open bulk cargo yard is low and water resource waste is caused in the prior art are solved.

Disclosure of Invention

The invention aims to provide a novel wet dust removal system for an open bulk cargo storage yard, which solves the problems in the background art.

In order to achieve the purpose, the invention provides the following technical scheme: a wet dust removing system for open-air bulk cargo storage yard comprises a base, the base further comprises

The base top lateral wall is fixed with the storage water tank, base top lateral wall is fixed with the water pump, the extraction end of water pump is fixed with the drinking-water pipe that is linked together, the drinking-water pipe extends to inside the storage water tank along the horizontal direction, the inlet opening has been seted up to the drinking-water pipe surface, water pump one end is provided with the dust fall subassembly with storage water tank looks adaptation, storage water tank top lateral wall is fixed with the water collecting bucket, the inboard lateral wall of water collecting bucket is fixed with the filter, water collecting bucket one side be provided with the edulcoration subassembly of filter looks adaptation.

In the scheme, the dust fall assembly comprises

The water pump comprises a plurality of channels, wherein the channels are arranged on the side wall of one side of the mounting rack in an equidistant distribution manner, a pipeline a is fixed inside the channels, a plurality of mounting sleeves a in an equidistant distribution manner are fixed on the side wall of the top end of the base, the pipeline a is fixed inside the mounting sleeves a, the output end of the water pump is fixed with a water outlet pipe which is communicated, and a four-way pipe fitting which is communicated is fixed at one end, away from the water pump, of the water outlet pipe;

the two pipelines b are symmetrically distributed and fixed at two ends of the four-way pipe fitting, the pipelines b are communicated with the four-way pipe fitting, one pipeline a is communicated with the four-way pipe fitting, and one pipeline a is symmetrically distributed and arranged with the water outlet pipe;

the bellows, the bellows is provided with a plurality ofly, and is a plurality of the bellows all is fixed in a plurality ofly pipeline a one end, the bellows with be linked together for pipeline a, the bellows is kept away from pipeline a's one end is fixed with the return bend that is linked together, the return bend is kept away from the one end of bellows is fixed with the atomizer that is linked together the setting.

It is further worth explaining that a plurality of installation sleeves b which are distributed at equal intervals are fixed on the outer side wall of the installation frame, and the pipeline a is fixed inside the installation sleeves b.

It should be further noted that one end of the pipeline a is connected to a matched communicating pipe, the diameter length of the communicating pipe is greater than that of the pipeline a, and a matched butterfly valve is arranged in the communicating pipe.

As a preferred embodiment, the impurity removing component comprises

The device comprises two additional plates, wherein the two additional plates are symmetrically distributed and fixed on the side wall of one side of the water collecting hopper, the adjacent side walls of the two additional plates are jointly and rotatably connected with a threaded rod, and a hand rotating wheel is coaxially fixed at one end of the threaded rod;

the water collecting device comprises two through grooves, wherein the two through grooves are symmetrically distributed on the side wall of one side of the water collecting hopper, a movable plate is connected inside the through grooves in a sliding mode, the side wall of one side of the movable plate is in threaded connection with the threaded rod, a scraping plate is fixed on the side wall of the bottom end of the movable plate, and the scraping plate is in contact with the top surface of the filtering plate.

As a preferred embodiment, the length of the scraper is the same as the width of the inner side of the water storage tank, and the length of the threaded rod is greater than the opening length of the through groove.

In a preferred embodiment, the cross section of the water collecting bucket is in an inverted trapezoid shape, and the projected area value of the water collecting bucket is larger than that of the water storage tank.

As a preferred embodiment, a waterproof frame is fixed to a side wall of the top end of the base, the water pump is located right below the waterproof frame, and a projected area value of the waterproof frame is larger than that of the water pump.

Compared with the prior art, the novel wet dust removal system for the open bulk cargo yard, provided by the invention, at least has the following beneficial effects:

(1) Water source pressurization in to the water tank through the water pump is sprayed by atomizer, not only can promote the dust fall scope to open bulk cargo store yard by a wide margin, then can be to open bulk cargo store yard more comprehensive dust fall purpose, application scope is wider for the raise dust condition of open bulk cargo store yard can better control.

(2) Clear up filter top surface department through the scraper blade, can effectively ensure that filter department can be good filter the water source, avoid then causing the condition to the water pump damage in entering into the storage water tank because of other impurity, reach the effect that uses the rainwater for it is lower to open bulk cargo stock yard dust fall work consumption water source.

(3) Through the closed angle of adjusting the butterfly valve in the communicating pipe, realize the play water flow that can effective control pipeline a, can not only single or a plurality of atomizer close out when not using, it is more convenient to operate and use to through can stretching the bellows, in order to reach the angle that the atomizing body sprayed water smoke, can reduce the condition that appears open bulk cargo store yard dead angle.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic top view of the present invention;

FIG. 3 is an enlarged view of the structure of area A in FIG. 2;

FIG. 4 is a schematic side sectional view of the water storage tank of the present invention;

FIG. 5 is a top view of a portion of the present invention;

fig. 6 is an enlarged schematic view of the structure of the region B in fig. 5.

In the figure: 1. a base; 2. a mounting frame; 3. a water storage tank; 4. a water pump; 5. a water pumping pipe; 6. a water inlet hole; 7. a dust fall assembly; 71. a channel; 72. a pipeline a; 73. mounting a sleeve a; 74. a water outlet pipe; 75. a four-way pipe fitting; 76. a pipe b; 77. a bellows; 78. bending a pipe; 79. an atomizing spray head; 8. a water collecting hopper; 9. a filter plate; 10. an impurity removal component; 101. adding a plate; 102. a threaded rod; 103. a hand wheel; 104. a through groove; 105. a movable plate; 106. a squeegee; 11. mounting a sleeve b; 12. a communicating pipe; 13. a butterfly valve; 14. a waterproof frame.

Detailed Description

The present invention will be further described with reference to the following examples.

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the drawings of the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative work based on the described embodiments of the present invention belong to the protection scope of the present invention.

The following examples are intended to illustrate the invention but are not intended to limit the scope of the invention. The conditions in the embodiments can be further adjusted according to specific conditions, and simple modifications of the method of the present invention based on the concept of the present invention are within the scope of the claimed invention.

Referring to fig. 1-6, the invention provides a novel wet dust removal system for an open bulk cargo storage yard, which comprises a base 1, wherein the base 1 further comprises a mounting frame 2, the mounting frame 2 is fixed on the side wall of the top end of the base 1, a water storage tank 3 is fixed on the side wall of the top end of the base 1, a water pump 4 is fixed on the side wall of the top end of the base 1, a water pumping pipe 5 communicated with the water pump 4 is fixed on the pumping end of the water pump 4, the water pumping pipe 5 extends into the water storage tank 3 along the horizontal direction, a water inlet 6 is formed in the outer surface of the water pumping pipe 5, a dust fall component 7 matched with the water storage tank 3 is arranged at one end of the water pump 4, a water collecting hopper 8 is fixed on the side wall of the top end of the water storage tank 3, a filter plate 9 is fixed on the inner side wall of the water collecting hopper 8, an impurity removal component 10 matched with the filter plate 9 is arranged on one side of the water collecting hopper 8, water source in the water storage tank 3 enters the water pumping pipe 5 through the water inlet 6, the water source in the water storage tank 3, the water source can be fully pumped and the water source can be prevented from being too low liquid level to be incapable of the water storage tank 3.

As further shown in fig. 1, fig. 2, fig. 4, fig. 5 and fig. 6, it is worth specifically explaining that the dust fall assembly 7 includes a plurality of channels 71, the plurality of channels 71 are equidistantly arranged on a side wall of one side of the mounting frame 2, a pipeline a72 is fixed inside the channel 71, a plurality of mounting sleeves a73 are fixed on a side wall of the top end of the base 1, the pipeline a72 is fixed inside the mounting sleeves a73, an output end of the water pump 4 is fixed with a water outlet pipe 74 that is communicated, and one end of the water outlet pipe 74 away from the water pump 4 is fixed with a four-way pipe 75 that is communicated; two pipelines b76 are arranged, the two pipelines b76 are symmetrically distributed and fixed at two ends of a four-way pipe fitting 75, the pipelines b76 are communicated with the four-way pipe fitting 75, one pipeline a72 is communicated with the four-way pipe fitting 75, and one pipeline a72 is symmetrically distributed with the water outlet pipe 74; bellows 77, bellows 77 is provided with a plurality ofly, a plurality of bellows 77 all are fixed in a plurality of pipeline a72 one end, bellows 77 is linked together for pipeline a72, bellows 77 is kept away from the one end of pipeline a72 and is fixed with the return bend 78 that is linked together, the one end that bellows 77 was kept away from to return bend 78 is fixed with the atomizer 79 that is linked together the setting, spray by atomizer 79 through water pump 4 water source pressurization in to the water tank, not only can promote the dust fall scope to open-air bulk cargo store yard by a wide margin, then can be to the more comprehensive dust fall purpose in open-air bulk cargo store yard, application scope is wider, and through can stretch bellows 77, in order to reach the angle that the atomizing body sprayed water smoke, can reduce the condition that appears open-air bulk cargo store yard dead angle.

Further as shown in fig. 2, it is worth specifically explaining that a plurality of installation sleeves b11 which are equidistantly distributed are fixed on the outer side wall of the installation frame 2, the pipeline a72 is fixed inside the installation sleeves b11, and the pipeline a72 is fixed in the installation sleeves b11 in a pinching mode, so that the stability of the pipeline a72 can be greatly improved, and the situation that the pipeline a72 shakes or shifts when the flow rate of water in the pipeline a72 is too high is effectively reduced.

The scheme has the following working processes: when dust fall of an open bulk storage yard is needed, at first, the position of a water source level value in a water storage tank 3 is ensured to be at least not lower than two thirds, the water source in the water storage tank 3 is extracted by a water pumping pipe 5 through driving of a water pump 4, the water pump 4 after pressurization is conveyed into a four-way pipe fitting 75 through a water outlet pipe 74, the water source is conveyed into a communicating pipe 12 through a pipeline b76, the angle of a butterfly valve 13 can be adjusted, the water flow speed in the pipeline a72 is controlled, the pressurized water source enters the pipeline a72, is conveyed into a corrugated pipe 77 and enters a bent pipe 78, the pressurized water source is atomized and sprayed to the open bulk storage yard dust fall area through an atomizing nozzle 79, the purpose of dust fall of the open bulk storage yard is achieved, when the water in the water storage tank 3 is filled each time, rainwater can be collected into the water storage tank 3 in a centralized manner through a water collecting hopper 8, when the filtering place needs to be cleaned regularly, firstly, a hand rotating wheel 103 is used for enabling a threaded rod 102 and a threaded rod 105 to drive a movable plate 104 to move along a movable plate 104, and a movable plate 106 is driven to move along a movable plate 104 to clean the top surface of a through groove.

According to the working process, the following steps are known: through the water source in the storage water tank 3 by inlet opening 6 entering to drinking-water pipe 5 in, can ensure that the water source in the storage water tank 3 fully extracts and absorbs, then avoid appearing the condition that the liquid level crosses lowly and lead to unable extraction in the storage water tank 3, and spray by atomizer 79 to the water source pressurization in the water tank through water pump 4, not only can promote the dust fall scope to open bulk cargo store yard by a wide margin, then can be to the more comprehensive dust fall purpose in open bulk cargo store yard, application scope is wider, and through can be to bellows 77 tensile, in order to reach the angle that the atomizing body sprayed water smoke, can reduce the condition that appears the open bulk cargo store yard dead angle, and hold between the fingers fixedly at installation cover b11 through pipeline a72, can promote pipeline a 72's stability by a wide margin, effectively reduce the condition that pipeline a72 rocks or position offset when the interior water velocity of flow is too big.

Further as shown in fig. 6, it is worth specifically explaining that, one end of the pipeline a72 is butted with the communicating pipe 12 which is in butt joint with the communicating pipe, the diameter length value of the communicating pipe 12 is larger than that of the pipeline a72, the communicating pipe 12 is internally provided with the butterfly valve 13 which is in butt joint with the communicating pipe, and the closing angle of the butterfly valve 13 in the communicating pipe 12 is adjusted, so that the water outlet flow of the pipeline a72 can be effectively controlled, not only can the single or multiple atomizing nozzles 79 be closed to discharge water when not in use, but also the operation and use are more convenient.

Further as shown in fig. 1, fig. 2 and fig. 3, it is worth specifically explaining that the impurity removing assembly 10 includes two additional plates 101, the two additional plates 101 are symmetrically distributed and fixed on a side wall of the water collecting hopper 8, adjacent side walls of the two additional plates 101 are jointly and rotatably connected with a threaded rod 102, and one end of the threaded rod 102 is coaxially fixed with a hand wheel 103; lead to groove 104, it is provided with two to lead to groove 104, two lead to groove 104 are the symmetric distribution and set up in water collecting hopper 8 one side lateral wall, it has fly leaf 105 to lead to the inside sliding connection of groove 104, fly leaf 105 one side lateral wall and threaded rod 102 threaded connection, fly leaf 105 bottom end lateral wall is fixed with scraper blade 106, scraper blade 106 contacts with filter 9 top surface, drive scraper blade 106 through edulcoration subassembly 10 and clear up filter 9 top surface department, can effectively ensure that filter 9 department can be good filter the water source, then avoid leading to the fact the condition of damaging water pump 4 in entering into storage water tank 3 because of other impurities, reach the effect that uses the rainwater, make it is lower to consume the water source to bulk cargo store yard dust fall work.

Further as shown in fig. 3, it should be specifically described that the length of the scraper 106 is the same as the width of the inside of the water storage tank 3, the length of the threaded rod 102 is greater than the opening length of the through groove 104, the cleaning range of the filter plate 9 by the scraper 106 can be ensured to be matched with the water storage tank 3 by setting the length of the scraper 106 to be the same as the width of the water storage tank 3, and the cleaning range of the filter plate 9 can be sufficiently large by setting the length of the threaded rod 102 to be greater than the opening length of the through groove 104 during the screw-driving of the threaded rod 102.

Further as shown in fig. 4, be worth specifically explaining, the transversal inverted trapezoid shape setting of personally submitting of water collecting bucket 8, the projected area value of water collecting bucket 8 is greater than the projected area value of storage water tank 3, through set up water collecting bucket 8 on 3 tops of storage water tank, can be better when rainwater weather concentrate the rainwater and collect to storage water tank 3 in, then reach the effect to water resource utilization, can reduce the working cost of open-air bulk cargo store yard dust fall to a certain extent, and reduce the condition of water waste to a certain extent.

Further as shown in fig. 1, worth specifically explaining, base 1 top lateral wall is fixed with waterproof frame 14, water pump 4 is located under waterproof frame 14, the projected area value of waterproof frame 14 is greater than the projected area value of water pump 4, through set up waterproof frame 14 directly over water pump 4, can play and play abundant guard action to water pump 4 when meeting rainwater weather, then avoid appearing water pump 4 because of the condition of meeting water short circuit, promote the life to water pump 4 to a certain extent.

To sum up: through the closed angle in communicating pipe 12 of adjusting butterfly valve 13, realize the play water flow of effective control pipeline a72, can not only single or a plurality of atomizer 79 close out when not using, it is more convenient to use the operation, and drive scraper blade 106 through edulcoration subassembly 10 and clear up filter 9 top surface department, can effectively ensure that filter 9 department can be good filter the water source, then avoid causing the condition to water pump 4 damage because of other impurity enters into storage water tank 3, reach the effect to the rainwater use, make to consume the water source lower to open-air bulk cargo store yard dust fall work, and the length through scraper blade 106 and the unanimous setting of width of storage water tank 3, can ensure that scraper blade 106 concentrates the scope and storage water tank 3 looks adaptation of cleaning filter 9 department, and length through threaded rod 102 is greater than the length that logical groove 104 sets up, make can be big to the scope that filter 9 cleaned when threaded transmission at threaded rod 102, and through setting up water collection hopper 8 on storage water tank 3 top, can be better when weather the rainwater concentrates on collecting water tank 3 collect to storage water tank 3 in storage water tank 3, reach the effect of the threaded rod 102, can reduce the certain rainwater waste degree of water resource and the dry matter and reduce the rainwater waste condition to water pump 4, and the life-time of water resource, and the rainwater waste 4, the life-saving effect of water pump 4 appears to the water resource, the water resource is avoided the water pump 4 to the water-saving effect of water pump 4.

The water pump 4 can be purchased in the market, and the water pump 4 is provided with a power supply, belongs to the mature technology in the field and is fully disclosed, so repeated description is omitted in the specification.

Unless defined otherwise, technical or scientific terms used herein should be construed as commonly understood by one of ordinary skill in the art, and the use of the term "comprising" or "including" and the like in the present invention means that the element or item preceding the term covers the element or item listed after the term and its equivalents, but does not exclude other elements or items, and the term "connected" or "connected" and the like are not limited to physical or mechanical connections, but may also include electrical connections, whether direct or indirect, "upper", "lower", "left", "right", and the like, are used merely to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may be changed accordingly.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. A novel wet dust removal system for an open bulk cargo storage yard comprises a base (1) and is characterized in that the base (1) further comprises

Mounting bracket (2), mounting bracket (2) are fixed in base (1) top lateral wall, base (1) top lateral wall is fixed with storage water tank (3), base (1) top lateral wall is fixed with water pump (4), the extraction end of water pump (4) is fixed with drinking-water pipe (5) that are linked together, inside drinking-water pipe (5) extended to storage water tank (3) along the horizontal direction, inlet opening (6) have been seted up to drinking-water pipe (5) surface, water pump (4) one end is provided with dust fall subassembly (7) with storage water tank (3) looks adaptation, storage water tank (3) top lateral wall is fixed with water collecting bucket (8), water collecting bucket (8) inboard lateral wall is fixed with filter (9), water collecting bucket (8) one side be provided with edulcoration subassembly (10) of filter (9) looks adaptation.

2. The wet dedusting system for open bulk cargo yard according to claim 1, characterized in that: the dust fall component (7) comprises

The water pump mounting structure comprises a plurality of channels (71), wherein the channels (71) are arranged in a plurality of positions, the channels (71) are distributed at equal intervals and arranged on the side wall of one side of the mounting frame (2), a pipeline a (72) is fixed inside the channels (71), a plurality of mounting sleeves a (73) distributed at equal intervals are fixed on the side wall of the top end of the base (1), the pipeline a (72) is fixed inside the mounting sleeves a (73), a water outlet pipe (74) communicated with each other is fixed at the output end of the water pump (4), and a four-way pipe fitting (75) communicated with each other is fixed at one end, far away from the water pump (4), of the water outlet pipe (74);

two pipelines b (76) are arranged, the two pipelines b (76) are symmetrically distributed and fixed at two ends of the four-way pipe fitting (75), the pipelines b (76) are communicated with the four-way pipe fitting (75), one pipeline a (72) is communicated with the four-way pipe fitting (75), and one pipeline a (72) is symmetrically distributed and arranged with the water outlet pipe (74);

bellows (77), bellows (77) are provided with a plurality ofly, and are a plurality of bellows (77) all are fixed in a plurality ofly pipeline a (72) one end, bellows (77) with be linked together for pipeline a (72), bellows (77) are kept away from the one end of pipeline a (72) is fixed with return bend (78) that are linked together, return bend (78) are kept away from the one end of bellows (77) is fixed with atomizer (79) that are linked together the setting.

3. The novel wet dedusting system for the open bulk material yard according to claim 2, wherein: the lateral wall in mounting bracket (2) outside is fixed with a plurality of installation cover b (11) that are the equidistance and distribute, pipeline a (72) with installation cover b (11) internal fixation.

4. The novel wet dedusting system for the open bulk material yard according to claim 2, wherein: the pipeline a (72) one end butt joint looks adaptation communicating pipe (12), the diameter length value of communicating pipe (12) is greater than the diameter length value of pipeline a (72), the butterfly valve (13) of looks adaptation is provided with in communicating pipe (12) inside.

5. The wet dedusting system for open bulk cargo yard according to claim 1, characterized in that: the impurity removing component (10) comprises

The water collecting bucket is characterized by comprising two additional plates (101), the two additional plates (101) are symmetrically distributed and fixed on the side wall of one side of the water collecting bucket (8), the adjacent side walls of the two additional plates (101) are jointly and rotatably connected with a threaded rod (102), and one end of the threaded rod (102) is coaxially fixed with a hand rotating wheel (103);

the water collecting device comprises through grooves (104), two through grooves (104) are arranged, the two through grooves (104) are symmetrically distributed on the side wall of one side of the water collecting hopper (8), a movable plate (105) is connected inside the through grooves (104) in a sliding mode, the side wall of one side of the movable plate (105) is in threaded connection with the threaded rod (102), scraping plates (106) are fixed on the side wall of the bottom end of the movable plate (105), and the scraping plates (106) are in contact with the top surface of the filtering plate (9).

6. The wet dust removal system for open bulk cargo storage yards according to claim 5, wherein: the length value of the scraper (106) is consistent with the width value of the inner side of the water storage tank (3), and the length value of the threaded rod (102) is larger than the opening length value of the through groove (104).

7. The wet dedusting system for open bulk cargo yard according to claim 1, characterized in that: the cross section of the water collecting hopper (8) is in an inverted trapezoidal shape, and the projection area value of the water collecting hopper (8) is larger than that of the water storage tank (3).

8. The wet dedusting system for open bulk cargo yard according to claim 1, characterized in that: the base (1) top lateral wall is fixed with waterproof frame (14), water pump (4) are located under waterproof frame (14), the projected area value of waterproof frame (14) is greater than the projected area value of water pump (4).