Waste gas waste heat recycling and purifying system of fabric setting machine

Abstract

The invention relates to the technical field of fabric setting machines, and discloses a fabric setting machine waste gas waste heat recycling and purifying system which structurally comprises a setting machine, a waste heat recycling device, a waste gas purifying device, a pipeline fixing mechanism, a sputtering mechanism, a rotating piece and a dispersing disc. The pipeline fixing mechanism is additionally arranged on the connecting pipeline between the setting machine and the waste heat recycling device, a hot air inlet pipe and an exhaust pipe of the waste heat recycling device can be connected by means of up-down closing of an upper clamping plate and a lower clamping plate, and the contact surfaces of the pipelines at the two ends are sealed by means of internal sealing gaskets; the connecting pipeline can be conveniently and movably disassembled through the pipeline fixing mechanism, a mixture of dust, batting and oil adhering to the interior of the pipeline of the waste heat recycling device is rapidly cleaned, the heat exchange efficiency of the waste heat recycling device reaches the initial state, and the situation that the heat recycling efficiency of the device is reduced due to the fact that the pipeline is difficult to clean is avoided.

Description

Technical Field

[0001] The invention belongs to the field of fabric shaping machines, and in particular relates to an exhaust gas waste heat recycling and purification system of the fabric shaping machine. Background Art

[0002] The fabric setting machine is one of the key equipments often used in textile printing and dyeing production. It is mainly used to set the fabric. The fabric needs to be set after pre-treatment, dyeing or printing. The setting machine will generate flue gas during use. These waste gases are generated under high temperature in the tunnel of the textile setting machine, so waste heat will be generated. In the prior art, waste heat recovery devices are usually used to recover the waste heat of the generated hot waste gas. There are two types of waste heat recovery devices for sizing machines on the market: tubular and plate heat exchangers. However, they all have the same problem: after a period of use, the heat recovery efficiency decreases significantly. The main reason for the decrease in efficiency is the difficulty in cleaning. The existing waste heat recovery devices cannot quickly dismantle and clean the connecting pipes, and after the waste heat is recycled, there is a lack of equipment to purify the discharged waste gas, so that the direct discharge of the waste gas will cause pollution to the environment. This application proposes a waste heat recovery and purification system for exhaust gas from a fabric setting machine to improve the above-mentioned defects. Summary of the invention

[0003] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide a waste heat recovery and purification system for waste gas from a fabric setting machine that can quickly clean the pipeline of a waste heat recovery device and purify waste gas.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: A waste heat recovery and purification system for waste gas of a fabric setting machine comprises a setting machine, a waste heat recovery device and a waste gas purification device. The setting machine is connected with the waste heat recovery device, and one side of the waste heat recovery device is connected to the waste gas purification device.

[0005] In a specific possible implementation scheme, the shaping machine includes a drying box, a fan, an exhaust pipe and a cooling box. The fan is connected to one side of the drying box, the exhaust pipe is connected to one side of the top of the drying box, the other end of the exhaust pipe is connected to a waste heat recovery device, and a cooling box is provided on one side of the drying box.

[0006] In a specific feasible implementation scheme, the waste heat recovery device includes a hot air inlet pipe, a hot air outlet pipe, a cold air inlet pipe, a cold air outlet pipe and a pipe fixing mechanism. A hot air inlet pipe, a hot air outlet pipe, a cold air inlet pipe and a cold air outlet pipe are opened on one side of the waste heat recovery device, and the connecting ends of the hot air inlet pipe, the hot air outlet pipe, the cold air inlet pipe and the cold air outlet pipe are all provided with a pipe fixing mechanism, and the hot air inlet pipe is connected to the exhaust pipe.

[0007] In a specific feasible implementation scheme, the pipe fixing mechanism includes an upper clamping plate, a lower clamping plate, a slide groove, a mounting hole and a fixing bolt. The slide grooves are symmetrically provided on both sides of the upper clamping plate. The bottom of the upper clamping plate is movably matched with the lower clamping plate. Mounting holes are provided on both sides of the lower clamping plate, and fixing bolts are installed on the two mounting holes.

[0008] In a specific possible implementation manner, sealing gaskets are fixedly provided at the inner centers of the upper clamping plate and the lower clamping plate, and two sides of the sealing gaskets are respectively in contact with the hot air inlet pipe and the exhaust pipe.

[0009] In a specific possible implementation scheme, the waste gas purification device includes a collecting box, a recycling pipe, a connecting port, an exhaust pipe and a purification component. One end of the collecting box is connected to the recycling pipe, and a connecting port connected to a hot air outlet pipe is provided on the side of the recycling pipe away from the collecting box. An exhaust pipe is installed on the top of the recycling pipe, and a purification component is installed inside the recycling pipe.

[0010] In a specific feasible implementation scheme, the purification component includes a water pipe, a water inlet, a spray plate, a sputtering mechanism, a rotating member and a dispersion plate. The water inlet is provided at the bottom of the water pipe, and the water inlet is connected to the bottom of the recycling pipe. The top of the water pipe is connected to the spray plate. A sputtering mechanism, a rotating member and a dispersion plate are provided in sequence directly below the spray plate, and the sputtering mechanism, the rotating member and the dispersion plate are all connected to the water pipe.

[0011] In a specific possible implementation mode, the rotating members are provided in a plurality of groups, and the plurality of groups of rotating members are arranged in a staggered manner at high and low levels on the water pipe.

[0012] In a specific possible implementation scheme, the sputtering mechanism includes a motor, a driving gear, a driven gear and a striking ring. The output end of the motor is connected to the driving gear, a side gear of the driving gear is meshed with a driven gear, and the driven gear is installed on the striking ring. The striking ring is located on the top of the water pipe and rotates with the water pipe.

[0013] In a specific possible implementation manner, the rotating member is composed of a mounting frame and a rotating plate, a plurality of rotating plates are arranged in a circular array on the mounting frame, and the plurality of rotating plates are fixed to the mounting frame.

[0014] In a specific possible implementation manner, the dispersion plate comprises air holes and water receiving grooves, the dispersion plate is densely covered with air holes, the dispersion plate is provided with a plurality of water receiving grooves, and the plurality of water receiving grooves are staggered with the air holes.

[0015] According to the technical solution proposed above, the waste heat recovery and purification system of the fabric setting machine exhaust gas of the present invention has the following beneficial effects: (1) The present invention adds a pipe fixing mechanism to the connecting pipe between the setting machine and the waste heat recovery device. By closing the upper and lower clamping plates, the hot air inlet pipe and the exhaust pipe of the waste heat recovery device can be connected. The contact surfaces of the pipes at both ends are sealed by means of internal sealing gaskets. The connecting pipe can be easily disassembled by the pipe fixing mechanism, and the mixture of dust, lint and oil adhering to the pipe of the waste heat recovery device can be quickly cleaned, so that the heat exchange efficiency of the waste heat recovery device reaches the initial state, avoiding the situation where the heat recovery efficiency of the equipment decreases due to the difficulty of cleaning the pipe.

[0016] (2) The present invention can purify the discharged exhaust gas by adding an exhaust gas purification device, and with the help of the internally provided sputtering mechanism, when the driving gear is driven to rotate by the operation of the motor, the driving gear will drive the driven gear and the striking ring to rotate together by means of the gear meshing, so that the liquid sprayed by the spray disc is struck and dispersed by the striking ring, so that the liquid is dispersed and falls, which can fully contact the exhaust gas over a large range, thereby increasing the purification effect and efficiency.

[0017] (3) The present invention provides a rotating part in the exhaust gas purification device. When the purified liquid is sprayed downward, the gravity generated contacts the rotating plate, driving the rotating plate to generate a downward force, so that the mounting frame rotates on the water pipe, and the rising exhaust gas is blown away by the rotating plate, so that the exhaust gas can evenly contact the purified liquid.

[0018] (4) The present invention provides a dispersion plate in the exhaust gas purification device, and disperses the exhaust gas with the help of the air holes densely distributed on the dispersion plate, thereby reducing the rising speed of the exhaust gas, so that the exhaust gas can be more in contact with the purification liquid, and a plurality of water receiving tanks can receive the dripping purification liquid and discharge it through the air holes. When the purification liquid is discharged from the air holes, it will contact with the rising exhaust gas, thereby increasing the contact time with the exhaust gas and improving the purification effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Other features, objects and advantages of the present invention will become more apparent from the detailed description of non-limiting embodiments made with reference to the following drawings: Figure 1 This is a structural schematic diagram of a waste heat recovery and purification system for exhaust gas from a fabric setting machine in an embodiment of the present application; Figure 2This is a schematic diagram of the structure of a shaping machine in an embodiment of the present application; Figure 3 This is a schematic diagram of the structure of the waste heat recovery device in the embodiment of the present application; Figure 4 This is an exploded schematic diagram of the pipeline fixing mechanism in the embodiment of the present application; Figure 5 This is a schematic diagram of the installation structure of the sealing gasket in the embodiment of the present application; Figure 6 This is a schematic diagram of the structure of the exhaust gas purification device in the embodiment of the present application; Figure 7 This is a schematic diagram of the structure of the purification component in the embodiment of the present application; Figure 8 This is a schematic diagram of the structure of the sputtering mechanism in the embodiment of the present application; Fig. 9 This is a schematic diagram of the structure of the rotating member in the embodiment of the present application; Fig.10 It is a schematic diagram of the structure of the dispersion disk in the embodiment of the present application.

[0020] In the figure: setting machine 1, waste heat recovery device 2, waste gas purification device 3, drying box 11, fan 12, exhaust pipe 13, cooling box 14, hot air inlet pipe 21, hot air outlet pipe 22, cold air inlet pipe 23, cold air outlet pipe 24, pipe fixing mechanism 25, upper clamping plate 251, lower clamping plate 252, slide groove 253, mounting hole 254, fixing bolt 255, sealing gasket 256 , collecting box-31, recycling pipe-32, connecting port-33, air outlet pipe-34, purification component-35, water pipe-41, water inlet end-42, spraying disc-43, sputtering mechanism-44, rotating part-45, dispersion disc-46, motor-441, driving gear-442, driven gear-443, striking ring-444, mounting frame-451, rotating plate-452, air vent-461, water receiving trough-462. DETAILED DESCRIPTION

[0021] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further explained below in conjunction with specific implementation methods.

[0022] Example 1: Please refer to Figure 1-Figure 5 , the specific embodiments of the present invention are as follows: A waste heat recovery and purification system for waste gas from a fabric setting machine, the structure of which includes a setting machine 1, a waste heat recovery device 2 and a waste gas purification device 3. The setting machine 1 is connected to the waste heat recovery device 2 which can recover the waste heat and waste gas generated by the textile fabric. One side of the waste heat recovery device 2 is connected to the waste gas purification device 3. The waste gas purification device 3 can purify the waste gas generated by the setting machine before discharging it.

[0023] See also Figure 2 The setting machine 1 includes a drying box 11, a fan 12, an exhaust pipe 13 and a cooling box 14. The fan 12 is connected to one side of the drying box 11, and the fan 12 can circulate air to the drying box 11. The exhaust pipe 13 is connected to one side of the top of the drying box 11, and the other end of the exhaust pipe 13 is connected to the waste heat recovery device 2. A cooling box 14 that can cool the dried fabric is provided on one side of the drying box 11.

[0024] See also Figure 3 The waste heat recovery device 2 includes a hot air inlet pipe 21, a hot air outlet pipe 22, a cold air inlet pipe 23, a cold air outlet pipe 24 and a pipe fixing mechanism 25. A hot air inlet pipe 21, a hot air outlet pipe 22, a cold air inlet pipe 23 and a cold air outlet pipe 24 are opened on one side of the waste heat recovery device 2, and the connecting ends of the hot air inlet pipe 21, the hot air outlet pipe 22, the cold air inlet pipe 23 and the cold air outlet pipe 24 are all provided with a pipe fixing mechanism 25. The pipe fixing mechanism 25 can movably fix the connection between several air inlet pipes on the waste heat recovery device 2 and external pipes, which is convenient for disassembly. The hot air inlet pipe 21 is connected to the exhaust pipe 13, so that the exhaust gas generated by the drying box 11 can enter the waste heat recovery device 2 for waste heat recovery.

[0025] See also Figure 4 The pipeline fixing mechanism 25 includes an upper clamping plate 251, a lower clamping plate 252, a slide groove 253, a mounting hole 254 and a fixing bolt 255. The slide grooves 253 are symmetrically provided on both sides of the upper clamping plate 251. The bottom of the upper clamping plate 251 is movably matched with the lower clamping plate 252. Mounting holes 254 are provided on both sides of the lower clamping plate 252. Fixing bolts 255 are installed on the two mounting holes 254. The fixing bolts 255 can fix the upper clamping plate 251 and the lower clamping plate 252.

[0026] See also Figure 4-5 A sealing gasket 256 is fixedly provided at the inner center of the upper clamping plate 251 and the lower clamping plate 252. The two sides of the sealing gasket 256 are respectively in contact with the hot air inlet pipe 21 and the exhaust pipe 13, which can seal them to prevent air leakage when the pipes on both sides are connected.

[0027] See also Figure 3-5 By closing the upper and lower clamping plates 251 and 252, the hot air inlet pipe 21 on the waste heat recovery device 2 can be connected to the exhaust pipe 13, and then the contact surfaces of the pipes at both ends are sealed with the help of the internal sealing gasket 256. The pipe fixing mechanism 25 is used to facilitate the disassembly of the connecting pipes, and the dust, lint, and oil mixture adhering to the pipes of the waste heat recovery device 2 can be cleaned.

[0028] Example 2: Please refer to Figure 6-Figure 10, the specific embodiments of the present invention are as follows: See also Figure 6 The exhaust gas purification device 3 includes a collecting box 31, a recycling pipe 32, a connecting port 33, an exhaust pipe 34 and a purification component 35. One end of the collecting box 31 is connected to the recycling pipe 32. The recycling pipe 32 is provided with a connecting port 33 connected to the hot air outlet pipe 22 on the side away from the collecting box 31, so that the exhaust gas in the waste heat recycling device 2 can be discharged into the exhaust gas purification device 3. The top of the recycling pipe 32 is provided with an exhaust pipe 34 for discharging the purified exhaust gas, and the interior of the recycling pipe 32 is provided with a purification component 35 for purifying the exhaust gas.

[0029] See also Figure 7 The purification component 35 includes a water pipe 41, a water inlet end 42, a spraying disc 43, a sputtering mechanism 44, a rotating member 45 and a dispersion disc 46. The water pipe 41 is provided with a water inlet end 42 at the bottom, and the water inlet end 42 is connected to the bottom of the recycling pipe 32, and the water inlet end 42 is exposed to the outside of the recycling pipe 32 and is connected to an external water source. The top of the water pipe 41 is connected to the spraying disc 43, and the spraying disc 43 can be used to spray the purification liquid to purify the rising exhaust gas. The sputtering mechanism 44, the rotating member 45 and the dispersion disc 46 are sequentially provided directly below the spraying disc 43. The sputtering mechanism 44, the rotating member 45 and the dispersion disc 46 are all connected to the water pipe 41. The diameter of the dispersion disc 46 is slightly smaller than the diameter of the recycling pipe 32.

[0030] See also Figure 7 The rotating members 45 are provided with a plurality of groups, and the plurality of groups of rotating members 45 are arranged on the water pipe 41 in a staggered manner at different heights.

[0031] See also Figure 8 The sputtering mechanism 44 includes a motor 441, a driving gear 442, a driven gear 443 and a striking ring 444. The motor 441 is installed on the side wall of the water pipe 41. The output end of the motor 441 is connected to the driving gear 442. A driven gear 443 is meshed with a side gear of the driving gear 442. The driven gear 443 is installed on the striking ring 444. The striking ring 444 is located at the top of the water pipe 41 and rotates with the water pipe 41. When the motor 441 drives the driving gear 442 to rotate, the driving gear 442 will drive the driven gear 443 and the striking ring 444 to rotate together with the help of the gear meshing, so that the liquid sprayed by the spray disc 43 is struck and dispersed by the striking ring 444, so that the liquid is dispersed and falls, and can fully contact the exhaust gas over a wide range.

[0032] See also Fig. 9The rotating member 45 is composed of a mounting frame 451 and a rotating plate 452. One end of the mounting frame 451 is rotatably matched with the water pipe 41 through a bearing. A plurality of rotating plates 452 are arranged in a circular array on the mounting frame 451. The plurality of rotating plates 452 are fixed to the mounting frame 451. When the purified liquid on the spray disc 43 is sprayed and dripped, it will contact the rotating plate 452. With the help of the gravity of the purified liquid dripping, the rotating plate 452 will be driven to generate a downward force. Since the purified liquid is dripping all the time and the inertia of the mounting frame 451 when rotating, the mounting frame 451 is rotated on the water pipe 41, and the rising exhaust gas can be blown away with the help of the rotating plate 452, so that the exhaust gas can be evenly contacted with the purified liquid.

[0033] See also Fig.10 The dispersion plate 46 includes air holes 461 and water receiving grooves 462. The dispersion plate 46 is densely covered with air holes 461. The air holes 461 can disperse the exhaust gas discharged from the connecting port 33, thereby reducing the rising speed of the exhaust gas, so that the exhaust gas can be more in contact with the purified liquid. A plurality of water receiving grooves 462 are provided on the dispersion plate 46. The plurality of water receiving grooves 462 are staggered with the air holes 461. The water receiving grooves 462 can receive the dripping purified liquid and discharge it through the air holes 461. When the purified liquid is discharged from the air holes 461, it will contact with the rising exhaust gas, thereby increasing the contact time with the exhaust gas and increasing the purification effect.

[0034] Based on the above two groups of embodiments, the specific working principles are as follows: After the drying box 11 on the setting machine 1 completes the processing and setting of the textile fabric, the hot waste gas generated will be discharged into the waste heat recovery device 2 through the exhaust pipe 13 and the hot air inlet pipe 21. At the same time, the external cold air is allowed to enter through the cold air inlet pipe 23 of the plate heat exchanger on the waste heat recovery device 2, so that heat conduction occurs between the hot waste gas and the cold air, and heat transfer is achieved, thereby completing the waste heat recovery of the hot waste gas of the setting machine. When the waste heat recovery device 2 needs to clean the heat exchange pipeline after long-term use, the connecting pipeline can be disassembled by loosening the fixing bolt 255 to clamp the pipeline, and then the dust, lint, and oil mixture adhering to the pipeline can be cleaned, and the waste gas that has completed the heat exchange will be discharged into the waste gas purification device 3 through the hot air outlet pipe 22; The water inlet end 42 is connected to an external water source, so that the purified liquid can be discharged into the water pipe 41 and sprayed out through the spraying plate 43 on the top of the water pipe 41 to purify the rising exhaust gas. At the same time, the driving motor 441 drives the driving gear 442 to rotate. With the meshing between the gears, the driving gear 442 drives the driven gear 443 and the striking ring 444 to rotate together, so that the sprayed liquid is struck and dispersed with the aid of the striking ring 444, so that the liquid is dispersed and falls, and can fully contact the exhaust gas in a wide range. In the process of descending and spraying, the purified liquid contacts the rotating plate 452 with the aid of the gravity of the dripping, which drives the rotating plate 452 to generate a downward force to rotate the mounting frame 451 on the water pipe 41, and can disperse the rising exhaust gas with the aid of the rotating plate 452, so that the exhaust gas can evenly contact the purified liquid. During the rising process, the exhaust gas will pass through the dispersion plate 46 and disperse the exhaust gas when passing through the air holes 461, thereby reducing the rising speed of the exhaust gas, allowing the exhaust gas to come into contact with the purified liquid more, and the several water receiving grooves 462 on the dispersion plate 46 can collect the dripping purified liquid and discharge it through the air holes 461. When the purified liquid is discharged from the air holes 461, it will come into contact with the rising exhaust gas, increasing the contact time with the exhaust gas and increasing the purification effect. The purified exhaust gas will be discharged through the outlet pipe 34.

[0035] The control method of the present invention is to control through a controller. The control circuit of the controller can be realized by simple programming by technicians in this field. The provision of power is also common knowledge in this field, so the present invention will not explain the control method and circuit connection in detail.

[0036] In the description of the present invention, it is necessary to understand that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0037] The above are only specific implementation methods of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed in the present application, which should be covered by the protection scope of the present application.

Claims

1. A waste heat recovery and purification system for waste gas of a fabric setting machine, the structure of which comprises a setting machine (1), a waste heat recovery device (2) arranged at one side of the setting machine (1), and a waste gas purification device (3) used to be connected to the waste heat recovery device (2), the setting machine (1) comprising a drying box (11), a fan (12) arranged at one side of the drying box (11), and an exhaust pipe (13) located at the top of the drying box (11); the characteristics are: The waste heat recovery device (2) comprises a hot air inlet pipe (21), a hot air outlet pipe (22), a cold air inlet pipe (23), a cold air outlet pipe (24) and a pipe fixing mechanism (25); a hot air inlet pipe (21), a hot air outlet pipe (22), a cold air inlet pipe (23) and a cold air outlet pipe (24) are provided on one side of the waste heat recovery device (2); and a pipe fixing mechanism (25) is provided at the connecting ends of the hot air inlet pipe (21), the hot air outlet pipe (22), the cold air inlet pipe (23) and the cold air outlet pipe (24); and the hot air inlet pipe (21) is connected to the exhaust pipe (13); The pipeline fixing mechanism (25) comprises an upper clamping plate (251), sliding grooves (253) provided on both sides of the upper clamping plate (251), a lower clamping plate (252) for movably cooperating with the bottom of the upper clamping plate (251), mounting holes (254) provided on both sides of the lower clamping plate (252), and fixing bolts (255) installed on the mounting holes (254); The exhaust gas purification device (3) comprises a collection box (31), a recycling pipe (32) located at one end of the collection box (31), a connection port (33) provided at one side of the recycling pipe (32) and connected to the hot air outlet pipe (22), an outlet pipe (34) located at the top of the recycling pipe (32), and a purification component (35) provided inside the recycling pipe (32) and purifying the exhaust gas; The purification component (35) comprises a water pipe (41), a water inlet (42) disposed at the bottom of the water pipe (41), a spraying disc (43) located at the top of the water pipe (41), a sputtering mechanism (44) disposed directly below the spraying disc (43), a rotating member (45) and a dispersion disc (46), wherein the sputtering mechanism (44), the rotating member (45) and the dispersion disc (46) are all connected to the water pipe (41); The sputtering mechanism (44) comprises a motor (441), a driving gear (442) located at the output end of the motor (441), a driven gear (443) for meshing with a gear on one side of the driving gear (442), and a striking ring (444) mounted on the driven gear (443), wherein the striking ring (444) is located at the top of the water pipe (41) and is rotatably matched with the water pipe (41); The rotating member (45) is composed of a mounting frame (451) and a rotating plate (452); one end of the mounting frame (451) is rotatably matched with the water pipe (41) via a bearing; a plurality of rotating plates (452) are arranged in a circular array on the mounting frame (451); and the plurality of rotating plates (452) are fixed to the mounting frame (451); The dispersion plate (46) comprises air holes (461) and water receiving grooves (462). The dispersion plate (46) is densely covered with air holes (461). The air holes (461) are capable of dispersing waste gas discharged from the connection port (33). The dispersion plate (46) is provided with a plurality of water receiving grooves (462). The plurality of water receiving grooves (462) are staggered with the air holes (461).

2. The waste heat recovery and purification system of exhaust gas from a fabric setting machine according to claim 1 is characterized by: A sealing gasket (256) is fixedly provided at the inner center of each of the upper clamping plate (251) and the lower clamping plate (252), and two sides of the sealing gasket (256) are in contact with the hot air inlet pipe (21) and the exhaust pipe (13) respectively.

3. The waste heat recovery and purification system of exhaust gas from a fabric setting machine according to claim 1 is characterized in that: The rotating members (45) are provided in a plurality of groups, and the plurality of groups of rotating members (45) are arranged in a staggered manner at high and low positions on the water pipe (41).

4. The waste heat recovery and purification system of exhaust gas from a fabric setting machine according to claim 1 is characterized in that: The water inlet end (42) is connected to the bottom of the recycling pipe (32), and the water inlet end (42) is exposed outside the recycling pipe (32) and is connected to an external water source.

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