Conveyor equipment convenient to clean

Abstract

The invention discloses conveyor equipment convenient to clean, and belongs to the technical field of conveyors, the conveyor equipment convenient to clean comprises a conveyor body, an ash scraping mechanism is mounted on the upper surface of the conveyor body, a spraying mechanism is arranged at the bottom of the conveyor body, and a cleaning mechanism is mounted on the inner side of the spraying mechanism; a drying mechanism is installed at the position, located on one side of the cleaning mechanism, of the bottom of the conveyor body, a supporting seat is installed on one side of the conveyor body, an auxiliary belt is rotationally connected to the upper surface of the supporting seat, and two first electric air cylinders are rotationally connected to one side of the supporting seat; a piston rod of the first electric air cylinder is rotationally connected with one side of the bottom of the auxiliary belt. On the basis that materials are conveyed, the conveying belt can be cleaned, and the conveying belt can be dried.

Description

Technical Field

[0001] The present invention relates to the technical field of conveyors, and more particularly to a conveyor device which is easy to clean. Background Art

[0002] Conveyor belts are widely used in industrial production to transport materials, especially in food processing, pharmaceutical, chemical and other industries. However, in actual use, the surface of the conveyor belt is easily contaminated with dust, oil, residue and other impurities, which not only affects product quality, but may also cause equipment failure and safety hazards. Therefore, it is particularly important to clean, wash and dry the conveyor belt regularly.

[0003] Traditional conveyor belt cleaning methods mostly use manual wiping or water washing, which is inefficient and difficult to ensure thorough cleaning. There are also problems of water resource waste and environmental pollution. In addition, if the conveyor belt cannot be dried in time after cleaning, it is easy to breed bacteria and affect subsequent production. In order to solve these problems, automated equipment specifically for conveyor belt cleaning, washing and drying has gradually appeared on the market. Summary of the invention

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the present invention is to provide a conveyor device that is easy to clean. On the basis of realizing the conveying of materials, the present invention can also clean the conveyor belt and dry the conveyor belt.

[0006] 2. Technical solution

[0007] To solve the above problems, the present invention adopts the following technical solutions:

[0008] A conveyor device that is easy to clean, comprising: a conveyor body, a scraping mechanism is installed on the upper surface of the conveyor body, a spray mechanism is arranged at the bottom of the conveyor body, a cleaning mechanism is installed on the inner side of the spray mechanism, a drying mechanism is installed at the bottom of the conveyor body and on one side of the cleaning mechanism, a support seat is installed on one side of the conveyor body, an auxiliary belt is rotatably connected to the upper surface of the support seat, two first electric cylinders are rotatably connected to one side of the support seat, and the piston rod of the first electric cylinder is rotatably connected to one side of the bottom of the auxiliary belt.

[0009] As a preferred solution of the present invention, the scraping mechanism includes a first mounting seat installed on both sides of the upper surface of the conveyor body, a second electric cylinder for longitudinal adjustment is installed on the surface of the first mounting seat, a first moving seat is installed on the surface of the piston rod of the second electric cylinder, a reciprocating screw rod is rotatably connected to the surface of the first moving seat, two limiting slide grooves are provided on the surface of the first moving seat, an internal thread plate is slidably connected to the surface of the limiting slide groove, and the internal thread plate is threadedly connected to the surface of the reciprocating screw rod, a scraping plate is fixedly connected to the bottom of the internal thread plate, and the two scraping plates are staggered.

[0010] As a preferred solution of the present invention, a first guide rod is installed on the surface of the first movable seat and on one side of the reciprocating screw rod, the two internal threaded plates are slidably connected to the surface of the first guide rod, two second guide rods are installed on the surfaces of both sides of the first movable seat, and the second guide rods are slidably connected to the surface of the first mounting seat, one end of the reciprocating screw rod is fixedly connected to the first gear, a first servo motor is installed on the surface of one side of the first movable seat, a second gear is installed on the surface of the output shaft of the first servo motor, and the second gear is meshed with the first gear.

[0011] As a preferred solution of the present invention, the spray mechanism includes a water collecting tank arranged below the conveyor body, a booster water pump is installed on the rear side of the water collecting tank, a mounting plate is installed on the surface of the water collecting tank, a plurality of spray pipes are installed on the surface of the mounting plate, a plurality of spray heads are installed at equal intervals on the surface of the spray pipe, a liquid inlet end of the booster water pump is connected to the water collecting tank, and a liquid outlet end of the booster water pump is connected to the plurality of spray pipes through a water supply pipe.

[0012] As a preferred solution of the present invention, a water guide scoop connected to the water collecting tank is installed on the surface of one side of the water collecting tank, and the inner wall of the water guide scoop is inclined. A drain pipe and an overflow pipe are installed on the front of the water collecting tank. The overflow pipe is located above the drain pipe and is connected to the drain pipe. A drain valve is installed on the surface of the drain pipe.

[0013] As a preferred solution of the present invention, the cleaning mechanism includes a cleaning frame installed on the inner wall of the water collecting tank, the inner side of the cleaning frame is rotatably connected to two first rotating shafts, the surface of the first rotating shaft is fixedly connected to a cleaning hair roller, the inner side of the cleaning frame is rotatably connected to two second rotating shafts, the surfaces of the second rotating shaft and the first rotating shaft are both fixedly connected to pulleys, and the two pulleys are rotatably connected via a transmission belt.

[0014] As a preferred solution of the present invention, a double-headed motor is installed on the surface of the cleaning frame, and the surfaces of the output shafts at both ends of the double-headed motor are fixedly connected with first bevel gears, and one end of the outer sides of the two second rotating shafts is fixedly connected with second bevel gears, and the first bevel gear is meshed with the second bevel gear.

[0015] As a preferred solution of the present invention, the drying mechanism includes a drying box installed below the conveyor body and adapted to the conveyor belt of the conveyor body, a second mounting seat is installed on one side of the drying box, an air outlet hood is installed on the upper surface of the drying box, a blower is installed on the upper surface of the second mounting seat, a heater is installed on one side of the blower, a filter box is installed on the upper surface of the second mounting seat, and an air inlet hood is installed on one side of the filter box.

[0016] As a preferred solution of the present invention, two ends of the heater are respectively connected to the air outlet hood and the blower, the filter box is respectively connected to the two air inlet hoods and the blower, and a maintenance valve is installed at the bottom of the filter box.

[0017] 3. Beneficial effects

[0018] Compared with the prior art, the advantages of the present invention are:

[0019] (1) The present invention can significantly improve cleaning efficiency and reduce manual intervention through the coordinated use of a scraping mechanism (2), a spraying mechanism (3), a cleaning mechanism (4) and a drying mechanism (5), thereby ensuring that each cleaning operation can achieve the desired effect. Compared with traditional manual cleaning methods, the device can complete large-area cleaning work in a short time, saving time and labor costs.

[0020] (2) The present invention ensures that the surface of the conveyor body (1) always remains clean and uncontaminated through an integrated design of cleaning, washing and drying, thereby avoiding product quality problems caused by the uncleanness of the conveyor body (1), effectively preventing cross contamination, and improving product safety and quality stability. At the same time, regular cleaning and drying can not only keep the conveyor belt in good condition, but also reduce the risk of mechanical wear and failure caused by impurity accumulation, thereby extending the service life of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a conveyor device that is easy to clean according to the present invention;

[0022] Figure 2 It is a schematic diagram of a scraping mechanism in a conveyor device that is easy to clean according to the present invention;

[0023] Figure 3 The present invention is a kind of conveyor equipment which is easy to clean Figure 2 A magnified view of the local structure at center A;

[0024] Figure 4 A schematic diagram of a spray mechanism in a conveyor device that is easy to clean according to the present invention;

[0025] Figure 5 A schematic diagram of a cleaning mechanism in a conveyor device that is easy to clean according to the present invention;

[0026] Figure 6 The present invention is a kind of conveyor equipment which is easy to clean Figure 5 A magnified view of the local structure at B in the middle;

[0027] Figure 7 It is a schematic diagram from a first perspective of a drying mechanism in a conveyor device that is easy to clean according to the present invention;

[0028] Figure 8 This is a schematic diagram from a second perspective of a drying mechanism in a conveyor device that is easy to clean according to the present invention.

[0029] Description of the numbers in the figure:

[0030] 1. Conveyor body; 2. Scraping mechanism; 201. First mounting seat; 202. Second electric cylinder; 203. First moving seat; 204. Reciprocating screw rod; 205. Limiting slide; 206. Internal thread plate; 207. Scraping plate; 208. First guide rod; 209. Second guide rod; 210. First gear; 211. First servo motor; 212. Second gear; 3. Spraying mechanism; 301. Water collecting tank; 302. Booster pump; 303. Mounting plate; 304. Spraying pipe; 305. Spraying head; 306. Water pipe; 307. Water guide bucket; 308. Drain pipe; 309, overflow pipe; 310, drain valve; 4, cleaning mechanism; 401, cleaning frame; 402, first rotating shaft; 403, cleaning wool roller; 404, second rotating shaft; 405, pulley; 406, transmission belt; 407, double-headed motor; 408, first bevel gear; 409, second bevel gear; 5, drying mechanism; 501, drying box; 502, second mounting seat; 503, air outlet hood; 504, blower; 505, heater; 506, filter box; 507, air inlet hood; 508, inspection valve; 6, support seat; 7, auxiliary belt; 8, first electric cylinder. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0032] Example:

[0033] See also Figure 1-8 A conveyor device that is easy to clean includes: a conveyor body 1, a scraping mechanism 2 is installed on the upper surface of the conveyor body 1, a spray mechanism 3 is arranged at the bottom of the conveyor body 1, a cleaning mechanism 4 is installed on the inner side of the spray mechanism 3, a drying mechanism 5 is installed at the bottom of the conveyor body 1 and on one side of the cleaning mechanism 4, a support seat 6 is installed on one side of the conveyor body 1, an auxiliary belt 7 is rotatably connected to the upper surface of the support seat 6, two first electric cylinders 8 are rotatably connected to one side of the support seat 6, and the piston rod of the first electric cylinder 8 is rotatably connected to one side of the bottom of the auxiliary belt 7.

[0034] In a specific embodiment of the present invention, by using the scraping mechanism 2, the spraying mechanism 3, the cleaning mechanism 4 and the drying mechanism 5 in coordination, the cleaning efficiency can be significantly improved, manual intervention can be reduced, and it can be ensured that each cleaning can achieve the expected effect. Compared with traditional manual cleaning methods, the equipment can complete the cleaning of a large area in a short time, saving time and labor costs.

[0035] Specifically, the scraping mechanism 2 includes a first mounting seat 201 mounted on both sides of the upper surface of the conveyor body 1, a second electric cylinder 202 for longitudinal adjustment is mounted on the surface of the first mounting seat 201, a first moving seat 203 is mounted on the surface of the piston rod of the second electric cylinder 202, a reciprocating screw rod 204 is rotatably connected to the surface of the first moving seat 203, two limiting slide grooves 205 are provided on the surface of the first moving seat 203, an internal thread plate 206 is slidably connected to the surface of the limiting slide groove 205, and the internal thread plate 206 is threadedly connected to the surface of the reciprocating screw rod 204, a scraping plate 207 is fixedly connected to the bottom of the internal thread plate 206, and the two scraping plates 20 7 are staggered, a first guide rod 208 is installed on the surface of the first movable seat 203 and on one side of the reciprocating screw rod 204, two internal thread plates 206 are slidably connected to the surface of the first guide rod 208, two second guide rods 209 are installed on the surfaces of both sides of the first movable seat 203, and the second guide rods 209 are slidably connected to the surface of the first mounting seat 201, one end of the reciprocating screw rod 204 is fixedly connected to the first gear 210, a first servo motor 211 is installed on the surface of one side of the first movable seat 203, a second gear 212 is installed on the surface of the output shaft of the first servo motor 211, and the second gear 212 is meshed with the first gear 210.

[0036] In a specific embodiment of the present invention, the piston rod of the second electric cylinder 202 is started to drive the first movable seat 203 to fall. At this time, the first movable seat 203 drives the scraper plate 207 to contact the conveyor belt of the conveyor body 1. At the same time, the first movable seat 203 drives the second guide rod 209 to move on the surface of the first mounting seat 201, thereby increasing the stability of the first movable seat 203 during movement. Subsequently, the first servo motor 211 is started, and the output shaft of the first servo motor 211 drives the second gear 212 to rotate. At this time, the reciprocating screw rod 204 is driven to rotate under the action of the first gear 210. The rotation of the reciprocating screw rod 204 drives the internal thread plate 206 to reciprocate on the surface of the limiting slide groove 205 and the first guide rod 208. At this time, the surface of the conveyor belt of the conveyor body 1 is reciprocated and cleaned by the scraper plate 207.

[0037] Specifically, the spray mechanism 3 includes a water collecting box 301 arranged below the conveyor body 1, a booster water pump 302 is installed on the rear side of the water collecting box 301, a mounting plate 303 is installed on the surface of the water collecting box 301, a plurality of spray pipes 304 are installed on the surface of the mounting plate 303, a plurality of spray heads 305 are installed at equal intervals on the surface of the spray pipe 304, a liquid inlet end of the booster water pump 302 is connected to the water collecting box 301, and a liquid outlet end of the booster water pump 302 is connected to the plurality of spray pipes 304 through a water pipe 306, a water guide scoop 307 connected to the water collecting box 301 is installed on the surface of one side of the water collecting box 301, and the inner wall of the water guide scoop 307 is inclined, a drain pipe 308 and an overflow pipe 309 are installed on the front of the water collecting box 301, the overflow pipe 309 is located above the drain pipe 308, and the overflow pipe 309 is connected to the drain pipe 308, and a drain valve 310 is installed on the surface of the drain pipe 308.

[0038] In a specific embodiment of the present invention, the water resources inside the water collecting tank 301 are transported to the spray pipe 304 through the water pipe 306 by starting the booster pump 302. At this time, the surface of the conveyor belt is sprayed through multiple spray heads 305, and the liquid on the surface of the conveyor belt will fall back into the water collecting tank 301. At the same time, the water guide bucket 307 will guide the water flow. The interior of the water collecting tank 301 can be injected with liquid through the overflow pipe 309, and the overflow pipe 309 can discharge the liquid overflowing from the water collecting tank 301. The interior of the water collecting tank 301 can be drained conveniently through the drain valve 310 and the drain pipe 308.

[0039] Specifically, the cleaning mechanism 4 includes a cleaning frame 401 installed on the inner wall of the water collecting tank 301, and the inner side of the cleaning frame 401 is rotatably connected to two first rotating shafts 402, and the surface of the first rotating shaft 402 is fixedly connected to a cleaning hair roller 403, and the inner side of the cleaning frame 401 is rotatably connected to two second rotating shafts 404, and the surfaces of the second rotating shaft 404 and the first rotating shaft 402 are fixedly connected to pulleys 405, and the two pulleys 405 are rotatably connected through a transmission belt 406, and a double-headed motor 407 is installed on the surface of the cleaning frame 401, and the surfaces of the output shafts at both ends of the double-headed motor 407 are fixedly connected to first bevel gears 408, and one end of the outer side of the two second rotating shafts 404 is fixedly connected to a second bevel gear 409, and the first bevel gear 408 is meshed with the second bevel gear 409.

[0040] In a specific embodiment of the present invention, the double-headed motor 407 is used to start the output shafts at both ends to drive the first bevel gear 408 to rotate. At this time, the second bevel gear 409 drives the second rotating shaft 404 to rotate. At this time, the pulley 405 and the transmission belt 406 drive the first rotating shaft 402 to rotate. The rotation of the first rotating shaft 402 drives the cleaning roller 403 to rotate, thereby brushing both sides of the conveyor belt.

[0041] Specifically, the drying mechanism 5 includes a drying box 501 installed below the conveyor body 1 and adapted to the conveyor belt of the conveyor body 1, a second mounting seat 502 is installed on one side of the drying box 501, an air outlet hood 503 is installed on the upper surface of the drying box 501, a blower 504 is installed on the upper surface of the second mounting seat 502, a heater 505 is installed on one side of the blower 504, a filter box 506 is installed on the upper surface of the second mounting seat 502, an air inlet hood 507 is installed on one side of the filter box 506, both ends of the heater 505 are respectively connected to the air outlet hood 503 and the blower 504, the filter box 506 is respectively connected to the two air inlet hoods 507 and the blower 504, and a maintenance valve 508 is installed at the bottom of the filter box 506.

[0042] In a specific embodiment of the present invention, the blower 504 is started, and the gas enters the interior of the filter box 506 through the air inlet hood 507. The gas is filtered by the filter box 506. The gas after filtering is transported to the interior of the heater 505 through the blower 504. At this time, the gas is heated by the heater 505, and the heated gas is discharged into the interior of the drying box 501 through the air outlet hood 503, thereby heating the conveyor belt.

[0043] A method for using a conveyor device that is easy to clean comprises the following steps:

[0044] When the conveyor body 1 needs to be cleaned, the conveyor body 1 and the second electric cylinder 202 are started at the same time, and the piston rod of the second electric cylinder 202 drives the first moving seat 203 to fall, and at this time the first moving seat 203 drives the scraper plate 207 to contact the conveyor belt of the conveyor body 1, and at the same time the first moving seat 203 drives the second guide rod 209 to move on the surface of the first mounting seat 201, and then the first servo motor 211 is started, and the output shaft of the first servo motor 211 drives the second gear 212 to rotate, and at this time the reciprocating screw rod 204 is driven to rotate under the action of the first gear 210, and the rotation of the reciprocating screw rod 204 drives the internal thread plate 206 to reciprocate on the surface of the limiting slide groove 205 and the first guide rod 208, and at this time the surface of the conveyor belt of the conveyor body 1 is reciprocated and cleaned by the scraper plate 207;

[0045] The booster pump 302 is started to deliver the water in the water collection tank 301 to the spray pipe 304 through the water delivery pipe 306. At this time, the surface of the conveyor belt is sprayed by multiple spray heads 305. The liquid on the surface of the conveyor belt will fall back into the water collection tank 301. At the same time, the water guide bucket 307 will guide the water flow.

[0046] The output shafts at both ends of the double-headed motor 407 are started to drive the first bevel gear 408 to rotate, and the second bevel gear 409 drives the second rotating shaft 404 to rotate. The pulley 405 and the transmission belt 406 drive the first rotating shaft 402 to rotate. The rotation of the first rotating shaft 402 drives the cleaning roller 403 to rotate, so as to brush both sides of the conveyor belt. At the same time, the spray pipe 304 and the spray head 305 spray the conveyor belt after the cleaning roller 403 brushes.

[0047] The blower 504 is started, and the gas enters the interior of the filter box 506 through the air inlet hood 507. The gas is filtered by the filter box 506. The filtered gas is transported to the interior of the heater 505 through the blower 504. At this time, the gas is heated by the heater 505, and the heated gas is discharged into the interior of the drying box 501 through the air outlet hood 503, thereby heating the conveyor belt.

[0048] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and improved concepts of the present invention within the technical scope disclosed by the present invention, and they should be covered by the protection scope of the present invention.

Claims

1. A conveyor device that is easy to clean, characterized in that: include: A conveyor body (1), wherein a scraping mechanism (2) is installed on the upper surface of the conveyor body (1), a spray mechanism (3) is arranged at the bottom of the conveyor body (1), a cleaning mechanism (4) is installed on the inner side of the spray mechanism (3), a drying mechanism (5) is installed at the bottom of the conveyor body (1) and on one side of the cleaning mechanism (4), a support seat (6) is installed on one side of the conveyor body (1), an auxiliary belt (7) is rotatably connected to the upper surface of the support seat (6), two first electric cylinders (8) are rotatably connected to one side of the support seat (6), and the piston rod of the first electric cylinder (8) is rotatably connected to one side of the bottom of the auxiliary belt (7).

2. The easy-to-clean conveyor equipment according to claim 1, characterized in that: The scraping mechanism (2) comprises a first mounting seat (201) mounted on both sides of the upper surface of the conveyor body (1); a second electric cylinder (202) for longitudinal adjustment is mounted on the surface of the first mounting seat (201); a first movable seat (203) is mounted on the surface of the piston rod of the second electric cylinder (202); a reciprocating screw rod (204) is rotatably connected to the surface of the first movable seat (203); two limiting slide grooves (205) are provided on the surface of the first movable seat (203); an internal thread plate (206) is slidably connected to the surface of the limiting slide groove (205); and the internal thread plate (206) is threadedly connected to the surface of the reciprocating screw rod (204); a scraping plate (207) is fixedly connected to the bottom of the internal thread plate (206); and the two scraping plates (207) are arranged in a staggered manner.

3. The easy-to-clean conveyor equipment according to claim 2, characterized in that: A first guide rod (208) is installed on the surface of the first movable seat (203) and located on one side of the reciprocating screw rod (204); the two internal threaded plates (206) are both slidably connected to the surface of the first guide rod (208); two second guide rods (209) are installed on the surfaces of both sides of the first movable seat (203); and the second guide rods (209) are slidably connected to the surface of the first mounting seat (201); one end of the reciprocating screw rod (204) is fixedly connected to a first gear (210); a first servo motor (211) is installed on the surface of one side of the first movable seat (203); a second gear (212) is installed on the surface of the output shaft of the first servo motor (211), and the second gear (212) is meshed with the first gear (210).

4. The easy-to-clean conveyor device according to claim 3, characterized in that: The spray mechanism (3) comprises a water collecting box (301) arranged below the conveyor body (1); a booster water pump (302) is installed on the rear side of the water collecting box (301); a mounting plate (303) is installed on the surface of the water collecting box (301); a plurality of spray pipes (304) are installed on the surface of the mounting plate (303); a plurality of spray heads (305) are installed on the surface of the spray pipe (304) at equal intervals; a liquid inlet end of the booster water pump (302) is connected to the water collecting box (301); and a liquid outlet end of the booster water pump (302) is connected to the plurality of spray pipes (304) via a water delivery pipe (306).

5. The easy-to-clean conveyor device according to claim 4, characterized in that: A water guide scoop (307) connected to the water collecting box (301) is installed on the surface of one side of the water collecting box (301), and the inner wall of the water guide scoop (307) is arranged in an inclined manner. A drainage pipe (308) and an overflow pipe (309) are installed on the front of the water collecting box (301). The overflow pipe (309) is located above the drainage pipe (308) and is connected to the drainage pipe (308). A drainage valve (310) is installed on the surface of the drainage pipe (308).

6. The easy-to-clean conveyor device according to claim 5, characterized in that: The cleaning mechanism (4) comprises a cleaning frame (401) mounted on the inner wall of a water collecting box (301), the inner side of the cleaning frame (401) being rotatably connected to two first rotating shafts (402), the surfaces of the first rotating shafts (402) being fixedly connected to cleaning hair rollers (403), the inner side of the cleaning frame (401) being rotatably connected to two second rotating shafts (404), the surfaces of the second rotating shafts (404) and the first rotating shafts (402) being fixedly connected to pulleys (405), and the two pulleys (405) being rotatably connected via a transmission belt (406).

7. The easy-to-clean conveyor device according to claim 6, characterized in that: A double-headed motor (407) is installed on the surface of the cleaning frame (401), and the surfaces of the output shafts at both ends of the double-headed motor (407) are fixedly connected with first bevel gears (408), and one end of the outer side of the two second rotating shafts (404) is fixedly connected with a second bevel gear (409), and the first bevel gear (408) is meshed with the second bevel gear (409).

8. The easy-to-clean conveyor device according to claim 7, characterized in that: The drying mechanism (5) comprises a drying box (501) installed below the conveyor body (1) and adapted to the conveyor belt of the conveyor body (1); a second mounting seat (502) is installed on one side of the drying box (501); an air outlet hood (503) is installed on the upper surface of the drying box (501); a blower (504) is installed on the upper surface of the second mounting seat (502); a heater (505) is installed on one side of the blower (504); a filter box (506) is installed on the upper surface of the second mounting seat (502); and an air inlet hood (507) is installed on one side of the filter box (506).

9. The easy-to-clean conveyor device according to claim 8, characterized in that: The two ends of the heater (505) are respectively connected to the air outlet hood (503) and the blower (504), the filter box (506) is respectively connected to the two air inlet hoods (507) and the blower (504), and a maintenance valve (508) is installed at the bottom of the filter box (506).

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