A graphite heat exchanger filter device and use method thereof

Abstract

The present invention provides a graphite heat exchanger filter device and a method for using the same, and relates to the field of graphite heat exchangers. The graphite heat exchanger filter device and the method for using the same comprise a housing, wherein a pre-filter box for preliminary filtering of cold water is installed on the upper part of the housing, a shunt filter box for separate filtering of cold water is installed in the middle of the housing, a graphite heat exchanger body for heating and exchanging cold water is installed on the lower part of the housing, a reflux heat supply pipe is installed on the bottom surface of the graphite heat exchanger body, and a stepped gear ring is installed on the bottom surface of the shunt filter box. The graphite heat exchanger filter device and the method for using the same can filter the cold water preliminarily by pouring the cold water into the pre-filter box, and the cold water after the pre-filtration enters the shunt filter box to separate and filter the cold water, and the cold water after the separate filtering enters the graphite heat exchanger body for heat exchange, and the graphite heat exchanger body can automatically clean the impurities inside the heat exchange tube when exchanging heat with the cold water.

Description

Technical Field

[0001] The invention relates to the field of graphite heat exchangers, in particular to a graphite heat exchanger filtering device and a use method thereof. Background Art

[0002] The graphite heat exchanger makes the graphite core into a block hole structure separated from each other vertically and horizontally. When the two media pass through each other, the high-temperature medium continuously transfers heat to the graphite heat exchanger, and the low-temperature medium continuously obtains heat from the heat exchanger, thereby achieving heat exchange;

[0003] Application No. CN202211362878.0 discloses a graphite heat exchanger filtering device, comprising a heat exchanger body, a transmission pipe is arranged on the top of the heat exchanger body, and the top of the heat exchanger body is movably connected to the top of the transmission pipe, a water tank is arranged on the bottom of the transmission pipe, and the bottom of the transmission pipe is fixedly connected to the top of the water tank, a connecting pipe is arranged on the right end of the water tank, and the right end of the water tank is fixedly connected to the left end of the connecting pipe, a purification device is arranged on the right end of the connecting pipe, and the right end of the connecting pipe is movably connected to the bottom of the purification device, the purification device comprises an outer frame, a water inlet pipe is arranged on the top of the outer frame, and the top of the outer frame is fixedly connected to the bottom of the water inlet pipe, and an adsorption device is arranged inside the outer frame;

[0004] When the above patent structure is in use, in order to prevent dust from easily clogging the inside of the heat exchanger, a removable adsorption plate is provided to clean the graphite heat exchanger, thereby ensuring the normal operation of the graphite heat exchanger filter device. However, when the graphite heat exchanger in the above patent is in use, the purpose of cleaning the graphite heat exchanger is achieved only by manually replacing the adsorption plate, and the self-cleaning effect of the inside of the graphite heat exchanger cannot be achieved. After the cold water enters the inside of the device, it is concentrated together, and the cold water can only passively pass through the filtering device, resulting in poor filtering effect, and the cold water cannot flow quickly in the filtering device and the inside of the graphite heat exchanger, thereby reducing the heat exchange effect. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a graphite heat exchanger filter device and a method of using the same, which solves the problem that the graphite heat exchanger is inconvenient to achieve the purpose of self-cleaning when in use, and it is inconvenient for the cooling to flow quickly in the filter device and the inside of the graphite heat exchanger, thereby reducing the heat exchange effect.

[0007] (II) Technical solution

[0008] In order to achieve the purpose of self-cleaning when the above graphite heat exchanger is used, and to facilitate the rapid flow of cooling in the filtering device and the inside of the graphite heat exchanger, thereby improving the purpose of heat exchange effect, the present invention is achieved through the following technical solutions: A graphite heat exchanger filtering device and a method of using the same, comprising a shell, a pre-filter box for preliminary filtering of cold water is installed on the upper part of the shell, a shunt filter box for separate filtering of cold water is installed in the middle of the shell, a graphite heat exchanger body for heating and exchanging cold water is installed at the lower part of the shell, a reflux heat supply pipe is installed on the bottom surface of the graphite heat exchanger body, and a stepped gear ring is installed on the bottom surface of the shunt filter box;

[0009] The pre-filter box, the diversion filter box and the graphite heat exchanger body are installed inside the shell from top to bottom;

[0010] A water inlet pipe is fixed to the upper end surface of the pre-filter box, and the water inlet pipe penetrates the shell and is slidably connected thereto, a water outlet groove is provided on the surface of one side of the pre-filter box, a frustum filter screen is slidably provided inside the pre-filter box, and the water inlet pipe is fixedly connected to the frustum filter screen, a screw is rotated on the frustum filter screen, and the screw penetrates the shell and is threadedly connected thereto, an upper guide tube is fixed between the pre-filter box and the diversion filter box, a slag discharge port is provided on the surface of the pre-filter box and the shell, and a slag collecting box is fixed on the surface of the shell and located at the slag discharge port;

[0011] The filtration unit is a kind of water filter element, and the filtration unit is a kind of water filter element, and the filtration unit is a kind of water filter element, and the filtration unit is a kind of water filter element.

[0012] The inside of the graphite heat exchanger body is staggeredly installed with a No. 1 heat exchange tube and a No. 2 heat exchange tube along its circumferential direction, an upper bend tube is installed between the top ends of the No. 1 heat exchange tube and the No. 2 heat exchange tube, a lower bend tube is installed between the bottom ends of the No. 1 heat exchange tube and the No. 2 heat exchange tube through a flange and bolts, the surfaces of the No. 1 heat exchange tube and the No. 2 heat exchange tube are sleeved with a gear ring, the bottom end of the lower conduit is fixedly connected to the No. 1 heat exchange tube, and a booster pump is installed at the bottom end of the No. 2 heat exchange tube;

[0013] The reflux heat supply pipe is installed on the bottom surface of the booster pump, the interior of the No. 1 heat exchange tube and the No. 2 heat exchange tube is provided with an inner heat exchange tube, the surface of the inner heat exchange tube is provided with an lower filter hole, the surface of the No. 1 heat exchange tube and the No. 2 heat exchange tube is provided with an outer rotating groove, the interior of the outer rotating groove is provided with an outer rotating ring for rotation, the surface of the inner heat exchange tube is provided with an inner rotating groove, the interior of the inner rotating groove is provided with an inner rotating ring for rotation, a tube cavity is formed by the gap between the inner heat exchange tube and the No. 1 heat exchange tube and the No. 2 heat exchange tube, an outer bracket is fixed between the outer rotating ring and the inner rotating ring, an outer spiral sheet is fixed on the outer bracket and located inside the tube cavity, an inner bracket is fixed on the inner wall of the inner rotating ring, a rotating shaft is fixed on the bottom surface of the inner bracket and located inside the inner heat exchange tube, and an inner spiral sheet is fixed on the surface of the rotating shaft.

[0014] Preferably, the frustum filter is in the shape of a quadrangular pyramid, the inclined surface on the frustum filter is located at the port of the slag discharge port, and the inner bottom surface of the pre-filter box is a conical surface.

[0015] Preferably, the cold water level inside the diverter filter box is below the press cake, half of the filter cartridge is located inside the diverter filter box, and the other half is located inside the water storage chamber, a torsion spring is installed on the fixed pin, and one end of the torsion spring is fixedly connected to the fixed pin, and the other end is in contact with the opening and closing plate.

[0016] Preferably, the recesses and protrusions on the bottom surface of the upper concave-convex ring are alternately arranged with the recesses and protrusions on the upper end surface of the lower concave-convex ring, the top end of the spring contacts the fixed plate, the bottom end contacts the lower concave-convex ring, and the press cake is located inside the filter cartridge and is slidably connected thereto.

[0017] Preferably, the No. 1 heat exchange tube and the No. 2 heat exchange tube are staggered and located inside the graphite heat exchanger body, the top ends of the No. 1 heat exchange tube and the No. 2 heat exchange tube are fixedly connected by an upper bend pipe, flanges are fixed on the bottom ends of the No. 1 heat exchange tube and the No. 2 heat exchange tube and the lower bend pipe, and the bottom ends of the No. 1 heat exchange tube and the No. 2 heat exchange tube are connected by a lower bend pipe.

[0018] Preferably, the gear ring is fixedly connected to the outer rotating ring, the outer spiral sheet is in contact with the inner wall of the tube cavity, the inner spiral sheet is in contact with the inner wall of the inner heat exchange tube, the upper bend tube and the lower bend tube are provided with an inner heat exchange bend tube inside, and the inner heat exchange bend tube is fixedly connected to the upper bend tube and the lower bend tube through a bracket, and is connected to the inner heat exchange tubes on both sides thereof, and the bottom end of the inner heat exchange tube is fixedly connected to the No. 1 heat exchange tube and the No. 2 heat exchange tube through a bracket.

[0019] Preferably, a switch valve is installed on the return heating pipe, a heating pipe is provided between the return heating pipe and the diversion filter box, and the stepped gear ring is composed of two sets of upper and lower gear plates with different diameters, and the upper gear plate is meshed with the driven gear plate, and the lower gear plate is meshed with the gear ring.

[0020] A method for using a graphite heat exchanger filter device comprises the following steps:

[0021] In the first step, cold water can be injected into the pre-filter box through the water inlet pipe. The cold water inside the pre-filter box enters the upper conduit after preliminary filtration through the cone filter. The impurities after preliminary filtration can remain on the cone filter and slide down on the cone filter. When it is necessary to clean the impurities on the cone filter, the screw rod is turned upward to drive the cone filter to move upward. When the bottom end of the cone filter moves to the slag discharge port, the impurities on the cone filter can slide into the slag collection box, and the slag collection box collects the impurities after preliminary filtration.

[0022] In the second step, the cold water after preliminary filtration can be transported to the shunt filter box through the upper conduit. The motor set on the bottom of the shunt filter box can drive the stepped gear ring to rotate. When the stepped gear ring rotates, it can mesh with the driven gear disc, so that the driven shaft can drive the filter cartridge to rotate. When the filter cartridge rotates, the water inlet can be opened or closed by the rotation of the opening and closing plate. Therefore, the cold water inside the shunt filter box can be divided into small streams and transported to the filter cartridge. The cold water inside the filter cartridge can be pressurized by the pressing cake, and the cold water can quickly pass through the upper filter hole, so the cold water can be quickly filtered again. At this time, the filtered cold water enters the water storage chamber. ;

[0023] In the third step, the cold water in the water storage cavity can be transported to the inner heat exchange tube on one side of the No. 1 heat exchange tube through the lower guide tube, and the cold water in the inner heat exchange tube enters the tube cavity after being filtered through the lower filter hole, and the cold water in the tube cavity flows in the No. 1 heat exchange tube and the No. 2 heat exchange tube in an S shape. During the flow of the cold water, the cold water can be heated by the graphite heat exchanger body, so the cold water can be heat exchanged by the graphite heat exchanger body, and the hot water after heat exchange can flow to the diversion filter box again for recycling through the reflux heating pipe and the heating pipe;

[0024] The fourth step is to drive the gear ring to rotate through the stepped gear ring, and then the gear ring can drive the outer bracket to rotate through the outer rotating ring, and the outer bracket can drive the outer spiral piece to rotate, so the impurities stuck to the inner wall of the tube cavity can be scraped off through the outer spiral piece, and the outer bracket can drive the rotating shaft to rotate through the inner rotating ring and the inner bracket, and then the rotating shaft can drive the inner spiral piece to rotate, so the impurities stuck to the inner wall of the inner heat exchange tube can be scraped off through the inner spiral piece, and when the lower bend tube is opened, the impurities that fall into the lower bend tube can be cleaned.

[0025] (III) Beneficial effects

[0026] The present invention provides a graphite heat exchanger filter device and a method for using the same. The device has the following beneficial effects:

[0027] 1. The graphite heat exchanger filtering device and the use method thereof, when it is necessary to clean the impurities after filtering inside the pre-filter box, the screw rod is rotated upward, and the frustum filter screen can be vertically guided through the water inlet pipe, so that when the screw rod is rotated, the frustum filter screen can be driven to move upward, and the impurities remaining on the frustum filter screen slide obliquely downward along its surface to the slag discharge port, and the impurities preliminarily filtered can be collected through the slag collecting box.

[0028] 2. The graphite heat exchanger filter device and its use method, when the opening and closing plate is unfolded and cold water enters the filter cartridge, the pressure cake moves upward, and when the opening and closing plate is closed, the pressure cake moves downward, so that the pressure cake can press down the cold water inside the filter cartridge, and the cold water enters the water storage chamber after being filtered through the upper filter hole, and through the multiple groups of filter cartridges arranged along the circumferential direction of the diverter filter box, the cold water inside the diverter filter box can be divided into multiple small amounts for filtration, and the rate at which the cold water passes through the upper filter hole can be increased, thereby improving the effect of cold water filtration.

[0029] 3. The graphite heat exchanger filter device and its use method can scrape down and clean the impurities adhering to the inner wall of the tube cavity when the outer spiral blade rotates, and scrape down and clean the impurities adhering to the inside of the inner heat exchange tube when the inner spiral blade rotates. At the same time, when the outer spiral blade rotates, it can generate thrust on the water inside the tube cavity so that the water flows quickly inside it. Similarly, when the inner spiral blade rotates, it can also generate thrust on the water inside it so that the water flows quickly inside it. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of the structure of the present invention;

[0031] Figure 2 It is a partial cross-sectional view of the pre-filter box of the structure of the present invention;

[0032] Figure 3 It is a partial cross-sectional view of the filter box of the structure of the present invention;

[0033] Figure 4 This is a schematic diagram of the filter cartridge structure of the present invention;

[0034] Figure 5 This is a combined diagram of a No. 1 heat exchange tube and a No. 2 heat exchange tube of the structure of the present invention;

[0035] Figure 6 It is a partial cross-sectional view of the first heat exchange tube and the second heat exchange tube of the structure of the present invention;

[0036] Figure 7 For the present invention Figure 6 A partial enlarged schematic diagram of the structure at point A in the middle.

[0037] Among them, 1. shell; 2. pre-filter box; 201. water inlet pipe; 202. water outlet trough; 203. cone filter; 204. screw; 205. upper guide tube; 206. slag outlet; 207. slag collecting box; 3. split filter box; 301. water storage cavity; 302. lower guide tube; 303. side groove; 304. fixed plate; 305. upper concave-convex ring; 306. fixed rod; 307. filter cartridge; 308. upper filter hole; 309. water inlet; 310. rotating groove; 311. fixed pin; 312. opening and closing plate; 313. pull groove; 314. fixed shaft; 315. sliding sleeve; 316. lower concave-convex ring; 317. 7. Spring; 318. Press cake; 319. Driven shaft; 320. Driven gear disc; 4. Graphite heat exchanger body; 401. No. 1 heat exchange tube; 402. No. 2 heat exchange tube; 403. Upper bend tube; 404. Lower bend tube; 405. Gear ring; 406. Booster pump; 5. Reflux heating pipe; 501. Inner heat exchange tube; 502. Lower filter hole; 503. Outer swivel; 504. Outer swivel; 505. Inner swivel; 506. Inner swivel; 507. Tube cavity; 508. Outer bracket; 509. Outer spiral sheet; 510. Inner bracket; 511. Rotating shaft; 512. Inner spiral sheet; 6. Stepped gear ring. DETAILED DESCRIPTION

[0038] The present invention is further described below in conjunction with the accompanying drawings and embodiments. In the description of the present invention, it should be noted that the orientations or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. are based on the orientations or positional relationships shown in the accompanying drawings, and are 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 limiting the present invention; the terms "first", "second", and "third" are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance. In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0039] See also Figure 1-7The present invention provides a technical solution: a graphite heat exchanger filtering device, comprising a shell 1, a pre-filter box 2 for preliminary filtering of cold water is installed on the upper part of the shell 1, a shunt filter box 3 for separate filtering of cold water is installed in the middle of the shell 1, a graphite heat exchanger body 4 for heating and exchanging cold water is installed at the lower part of the shell 1, a reflux heat supply pipe 5 is installed on the bottom surface of the graphite heat exchanger body 4, and a stepped gear ring 6 is installed on the bottom surface of the shunt filter box 3;

[0040] The pre-filter box 2, the flow-dividing filter box 3 and the graphite heat exchanger body 4 are installed inside the housing 1 from top to bottom;

[0041] An inlet pipe 201 is fixed to the upper end surface of the pre-filter box 2, and the inlet pipe 201 penetrates the shell 1 and is slidably connected thereto. A water outlet trough 202 is provided on the surface of the inlet pipe 201 located on one side of the interior of the pre-filter box 2. A frustum filter screen 203 is slidably provided inside the pre-filter box 2, and the inlet pipe 201 is fixedly connected to the frustum filter screen 203. A screw 204 is rotated on the frustum filter screen 203, and the screw 204 penetrates the shell 1 and is threadedly connected thereto. An upper guide tube 205 is fixed between the pre-filter box 2 and the diversion filter box 3. Slag discharge ports 206 are provided on the surfaces of the pre-filter box 2 and the shell 1, and a slag collecting box 207 is fixed on the surface of the shell 1 and located at the slag discharge port 206.

[0042] A water storage chamber 301 is provided inside the shunt filter box 3, a lower guide tube 302 is fixed below the water storage chamber 301, a side groove 303 is provided on the inner wall of the shunt filter box 3, a fixed plate 304 is fixed inside the side groove 303, an upper concave-convex ring 305 is fixed on the bottom surface of the fixed plate 304, a fixed rod 306 is fixed on the bottom surface of the fixed plate 304 and outside the upper concave-convex ring 305, a filter cartridge 307 is rotated inside the side groove 303, an upper filter hole 308 is provided on the bottom surface of the filter cartridge 307, a water inlet 309 is provided on the side of the filter cartridge 307, and a water inlet 309 is provided at the end of the water inlet 309. A rotating groove 310 is provided, a fixed pin 311 is fixed inside the rotating groove 310, an opening and closing plate 312 is rotatably provided on the fixed pin 311, a shifting groove 313 is provided at the top of the opening and closing plate 312, a fixed shaft 314 is fixed to the top surface of the inner part of the side groove 303, a sliding sleeve 315 slides on the surface of the fixed shaft 314, a lower concave-convex ring 316 is fixed to the bottom end of the sliding sleeve 315, a spring 317 is sleeved on the sliding sleeve 315, a pressing cake 318 is fixed to the bottom end of the sliding sleeve 315, a driven shaft 319 is fixed to the bottom surface of the filter cartridge 307, and a driven gear disc 320 is fixed to the bottom end of the driven shaft 319;

[0043] The inside of the graphite heat exchanger body 4 is staggeredly installed with a No. 1 heat exchange tube 401 and a No. 2 heat exchange tube 402 along its circumferential direction, an upper bend tube 403 is installed between the top ends of the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402, a lower bend tube 404 is installed between the bottom ends of the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402 through a flange and bolts, a gear ring 405 is sleeved on the surface of the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402, the bottom end of the lower guide tube 302 is fixedly connected to the No. 1 heat exchange tube 401, and a booster pump 406 is installed at the bottom end of the No. 2 heat exchange tube 402;

[0044] The return heat supply pipe 5 is installed on the bottom surface of the booster pump 406. The inner heat exchange pipe 501 is provided inside the No. 1 heat exchange pipe 401 and the No. 2 heat exchange pipe 402. The surface of the inner heat exchange pipe 501 is provided with an outer rotating groove 503. The outer rotating ring 504 rotates inside the outer rotating groove 503. The surface of the inner heat exchange pipe 501 is provided with an inner rotating groove 505. The inner rotating ring 506 rotates inside the inner rotating groove 505. The gap between the inner heat exchange pipe 501 and the No. 1 heat exchange pipe 401 and the No. 2 heat exchange pipe 402 forms a tube cavity 507. The outer rotating ring 504 and the inner rotating ring 506 rotate. An outer bracket 508 is fixed, an outer spiral piece 509 is fixed on the outer bracket 508 and located inside the tube cavity 507, an inner bracket 510 is fixed to the inner wall of the inner rotating ring 506, a rotating shaft 511 is fixed on the bottom surface of the inner bracket 510 and located inside the inner heat exchange tube 501, and an inner spiral piece 512 is fixed on the surface of the rotating shaft 511. Cold water can be poured into the pre-filter box 2 through the water inlet pipe 201. At this time, the cold water can be initially filtered through the cone filter 203 and then enter the upper conduit 205, and the upper conduit 205 can transport the initially filtered cold water to the diversion filter box 3, so that the impurities filtered inside the pre-filter box 2 can be cleaned later.

[0045] In this embodiment, the frustum filter 203 is in the shape of a quadrangular pyramid, the inclined surface on the frustum filter 203 is located at the end of the slag discharge port 206, and the inner bottom surface of the pre-filter box 2 is a conical surface;

[0046] Specifically, when the screw 204 is rotated upward, the conical filter 203 can be driven to move upward, and at the same time, the impurities on the inclined surface of the conical filter 203 can slide obliquely downward. When the conical filter 203 moves to the port of the slag discharge port 206, the impurities on the conical filter 203 can slide into the slag collecting box 207.

[0047] In this embodiment, the cold water level inside the shunt filter box 3 is located below the top of the filter cartridge 307, half of the filter cartridge 307 is located inside the shunt filter box 3, and the other half is located inside the water storage chamber 301. A torsion spring is installed on the fixed pin 311, and one end of the torsion spring is fixedly connected to the fixed pin 311, and the other end is in contact with the opening and closing plate 312;

[0048] Specifically, a slide groove is opened along the axial direction of the filter cartridge 307, a slider is fixed on the surface of the lower concave-convex ring 316, and the lower concave-convex ring 316 is slidably connected to the filter cartridge 307 axially through the slide groove and the slider. When the filter cartridge 307 rotates, the slide groove and the slider can also drive the lower concave-convex ring 316 to rotate, and the lower concave-convex ring 316 can also move in the upper and lower directions along the axis of the filter cartridge 307, so that the pressure cake 318 can press down the cold water inside the filter cartridge 307 and make the cold water pass through the upper filter hole 308 quickly. At the same time, when the pressure cake 318 presses down the cold water inside the filter cartridge 307, the cold water can pass through the upper filter hole 308 on one side of the water storage chamber 301, and at the same time, the upper filter hole 308 on one side of the diversion filter box 3 blocks the upper filter hole 308 by its bottom surface so that no water can flow out. Therefore, the cold water inside the filter cartridge 307 can only be filtered through the upper filter hole 308 and enter the water storage chamber 301 for storage.

[0049] In this embodiment, the concave and convex parts on the bottom surface of the upper concave-convex ring 305 are alternately arranged with the concave and convex parts on the upper end surface of the lower concave-convex ring 316, the top end of the spring 317 contacts the fixed plate 304, and the bottom end contacts the lower concave-convex ring 316, and the press cake 318 is located inside the filter cartridge 307 and is slidably connected thereto;

[0050] Specifically, there are rotating rings on the bottom surface of the fixed plate 304 and the upper end surface of the lower concave-convex ring 316, and the top end of the spring 317 is fixedly connected to the rotating ring on one side of the fixed plate 304, and the bottom end of the spring 317 is fixedly connected to the rotating ring on one side of the lower concave-convex ring 3164, so that during the rotation of the lower concave-convex ring 316, the expansion or contraction of the spring 317 can drive it to reciprocate in the up and down directions.

[0051] In this embodiment, the first heat exchange tube 401 and the second heat exchange tube 402 are arranged alternately and located inside the graphite heat exchanger body 4. The top ends of the first heat exchange tube 401 and the second heat exchange tube 402 are fixedly connected by an upper bend tube 403. Flanges are fixed on the bottom ends of the first heat exchange tube 401 and the second heat exchange tube 402 and the lower bend tube 404. The bottom ends of the first heat exchange tube 401 and the second heat exchange tube 402 are connected by the lower bend tube 404.

[0052] Specifically, the inner heat exchange tube 501 inside the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402 and the upper bend tube 403 and the lower bend tube 404 is arranged in a ring-shaped S shape to increase the travel of the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402 inside the graphite heat exchanger body 4. At the same time, the lower bend tube 404 is connected to the bottom ends of the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402 through a flange, so the lower bend tube 404 can be disassembled to clean the impurities accumulated inside the lower bend tube 404.

[0053] In this embodiment, the gear ring 405 is fixedly connected to the outer rotating ring 504, the outer spiral sheet 509 is in contact with the inner wall of the tube cavity 507, the inner spiral sheet 512 is in contact with the inner wall of the inner heat exchange tube 501, and the inner heat exchange bend tubes are provided inside the upper bend tube 403 and the lower bend tube 404, and the inner heat exchange bend tubes are fixedly connected to the upper bend tube 403 and the lower bend tube 404 through a bracket, and are connected to the inner heat exchange tubes 501 on both sides thereof, and the bottom end of the inner heat exchange tube 501 is fixedly connected to the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402 through a bracket;

[0054] Specifically, the outer spiral pieces 509 and the inner spiral pieces 512 inside the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402 have opposite spiral directions, and the impurities on the inner wall of the tube cavity 507 can be scraped and cleaned by the outer spiral pieces 509, and the impurities on the inner wall of the inner heat exchange tube 501 can be scraped and cleaned by the inner spiral pieces 512, and when the rotation of the outer spiral pieces 509 and the inner spiral pieces 512 is stopped, the scraped impurities can slide down along the surface of the outer spiral pieces 509 and the inner spiral pieces 512 into the lower bend pipe 404, and the impurities inside the lower bend pipe 404 can be cleaned by disassembling the lower bend pipe 404.

[0055] In this embodiment, a switch valve is installed on the return heating pipe 5, a heating pipe is provided between the return heating pipe 5 and the diversion filter box 3, and the stepped gear ring 6 is composed of two sets of upper and lower gear discs with different diameters, and the upper gear disc is meshed with the driven gear disc 320, and the lower gear disc is meshed with the gear ring 405;

[0056] Specifically, the hot water inside the reflux heating pipe 5 can be directly discharged by opening the switch valve. At the same time, the hot water inside the reflux heating pipe 5 can be transported to the diversion filter box 3 through the heating pipe between the reflux heating pipe 5 and the diversion filter box 3 for recycling.

[0057] A method for using a graphite heat exchanger filter device comprises the following steps:

[0058] In this embodiment, in the first step, cold water can be injected into the pre-filter box 2 through the water inlet pipe 201, and the cold water inside the pre-filter box 2 enters the upper guide tube 205 after preliminary filtration through the cone filter 203, and the impurities after preliminary filtration can remain on the cone filter 203 and slide down on the cone filter 203. When it is necessary to clean the impurities on the cone filter 203, the screw rod 204 is rotated upward to drive the cone filter 203 to move upward. When the bottom end of the cone filter 203 moves to the slag discharge port 206, the impurities on the cone filter 203 can slide into the slag collecting box 207, and the slag collecting box 207 collects the impurities after preliminary filtration.

[0059] In the second step, the cold water after preliminary filtration can be transported to the shunt filter box 3 through the upper conduit 205. The motor arranged on the bottom surface of the shunt filter box 3 can drive the stepped gear ring 6 to rotate. When the stepped gear ring 6 rotates, it can mesh with the driven gear plate 320, so that the driven shaft 319 can drive the filter cartridge 307 to rotate. When the filter cartridge 307 rotates, the water inlet 309 can be opened or closed by the rotation of the opening and closing plate 312. Therefore, the cold water inside the shunt filter box 3 can be divided into small streams and transported to the filter cartridge 307. The cold water inside the filter cartridge 307 can be pressurized by the press cake 318, and the cold water can quickly pass through the upper filter hole 308. Therefore, the cold water can be quickly filtered again. At this time, the filtered cold water enters the water storage chamber 301.

[0060] In the third step, the cold water in the water storage chamber 301 can be transported to the inner heat exchange tube 501 on the side of the first heat exchange tube 401 through the lower guide tube 302, and the cold water in the inner heat exchange tube 501 enters the tube cavity 507 after being filtered through the lower filter hole 502, and the cold water in the tube cavity 507 flows in the first heat exchange tube 401 and the second heat exchange tube 402 in an S shape. During the flow of the cold water, the cold water can be heated by the graphite heat exchanger body 4, so the cold water can be heat-exchanged by the graphite heat exchanger body 4, and the hot water after heat exchange can flow to the diversion filter box 3 again for recycling through the return heat supply pipe 5 and the heat supply pipe;

[0061] In the fourth step, the gear ring 405 can be driven to rotate by the stepped gear ring 6, and then the gear ring 405 can drive the outer bracket 508 to rotate through the outer rotating ring 504, and the outer bracket 508 can drive the outer spiral piece 509 to rotate, so that the impurities adhering to the inner wall of the tube cavity 507 can be scraped off by the outer spiral piece 509, and the outer bracket 508 can drive the rotating shaft 511 to rotate through the inner rotating ring 506 and the inner bracket 510, and then the rotating shaft 511 can drive the inner spiral piece 512 to rotate, so that the impurities adhering to the inner wall of the inner heat exchange tube 501 can be scraped off by the inner spiral piece 512, and when the lower bend tube 404 is opened, the impurities dropped into the lower bend tube 404 can be cleaned up;

[0062] The working principle and use process of the present invention are as follows: cold water can be poured into the pre-filter box 2 through the water inlet pipe 201, and the cold water can be initially filtered through the cone filter 203 and then enter the upper conduit 205, and the upper conduit 205 can transport the initially filtered cold water to the diversion filter box 3. When it is necessary to clean the impurities filtered inside the pre-filter box 2, the screw 204 is rotated upward, and the cone filter 203 can be vertically guided through the water inlet pipe 201. Therefore, when the screw 204 is rotated, the cone filter 203 can be driven to move upward. At this time, the impurities remaining on the cone filter 203 slide obliquely downward along its surface to the slag discharge port 206, and the initially filtered impurities can be collected through the slag collecting box 207. After the cold water enters the shunt filter box 3, and the cold water level is below the top of the pressure cake 318, at this time, the motor arranged on the bottom surface of the shunt filter box 3 can be started to drive the stepped gear ring 6 to rotate, and then the stepped gear ring 6 can make the driven shaft 319 drive the filter cartridge 307 to rotate by engaging with the driven gear plate 320. When the filter cartridge 307 drives the opening and closing plate 312 to rotate, and the pushing groove 313 on the opening and closing plate 312 contacts the fixed rod 306, the opening and closing plate 312 can be rotated outward to push it away, so that the water inlet 309 can be opened, and the cold water inside the shunt filter box 3 can be pushed into the filter cartridge 307. When the opening and closing plate 312 rotates, it can drive the torsion spring between it and the fixed pin 311 to first contract and then stretch and reset. When the torsion spring stretches, When the filter cartridge 307 is in a closed state, the lower concave-convex ring 316 can also be driven to rotate when the filter cartridge 307 rotates. When the convex part of the lower concave-convex ring 316 moves from the concave part of the upper concave-convex ring 305 to the convex part of the upper concave-convex ring 305, the lower concave-convex ring 316 can move downward, and the spring 317 is stretched, and when the convex part of the lower concave-convex ring 316 moves from the convex part of the upper concave-convex ring 305 to the concave part of the upper concave-convex ring 305, the spring 317 contracts and drives the lower concave-convex ring 316 to move upward, so that the lower concave-convex ring 316 can reciprocate in the up and down directions. At this time, the sliding sleeve 315 is slidably connected with the fixed shaft 314, and then the lower concave-convex ring 316 can drive the pressure cake 318 to reciprocate in the up and down directions through the sliding sleeve 315, and when the opening and closing plate 312 is opened, the cold water enters the filter cartridge 307, and the pressure cake 318 moves upward. When the opening and closing plate 312 is closed, the pressure cake 318 moves downward, and then the pressure cake 318 can press the cold water inside the filter cartridge 307, and make the cold water enter the water storage chamber 301 after being filtered through the upper filter hole 308, and through the multiple groups of filter cartridges 307 arranged along the circumferential direction of the shunt filter box 3, the cold water inside the shunt filter box 3 can be divided into multiple small amounts for filtration, and the rate at which the cold water passes through the upper filter hole 308 can be increased, thereby improving the effect of cold water filtration.The cold water after filtering inside the water storage chamber 301 enters the inner heat exchange tube 501 inside the first heat exchange tube 401 through the lower guide tube 302, and the cold water inside the inner heat exchange tube 501 enters the tube cavity 507 after being filtered through the lower filter hole 502. At this time, impurities remain in the inner heat exchange tube 501. At the same time, the cold water inside the first heat exchange tube 401 can enter the tube cavity 507 inside the second heat exchange tube 402 through the tube cavity 507 inside the lower bend tube 404, and the cold water inside the second heat exchange tube 402 can enter the first heat exchange tube 401 again through the tube cavity 507 inside the upper bend tube 403. The tube cavity 507 inside the tube 401, that is, the No. 1 heat exchange tube 401 and the No. 2 heat exchange tube 402 are arranged in a multi-stage S shape, so that the cold water can flow in the S shape inside the graphite heat exchanger body 4, so as to increase the flow stroke of the cold water inside the graphite heat exchanger body 4, so that the graphite heat exchanger body 4 can heat the cold water better. The hot water in the tube cavity 507 heated by the graphite heat exchanger body 4 is pressurized by the booster pump 406 and discharged from the reflux heating pipe 5. At this time, the hot water inside the reflux heating pipe 5 can flow to the heating pipe between it and the diversion filter box 3. The water can be transported to the shunt filter box 3 for recycling through the heating pipe, and the water can be discharged directly when the switch valve on the reflux heating pipe 5 is opened. In addition, when the stepped gear ring 6 rotates, it can drive the outer rotating ring 504 to rotate through the engagement with the gear ring 405, and then the outer rotating ring 504 can drive the outer spiral piece 509 to rotate through the outer bracket 508, and the outer bracket 508 can drive the rotating shaft 511 to rotate through the inner rotating ring 506 and the inner bracket 510, and then the rotating shaft 511 can drive the inner spiral piece 512 to rotate, and then when the outer spiral piece 509 rotates, the heat stuck to the Impurities on the inner wall of the tube cavity 507 are scraped down and cleaned. When the inner spiral blade 512 rotates, impurities adhering to the inner heat exchange tube 501 can be scraped down and cleaned. At the same time, when the outer spiral blade 509 rotates, it can generate thrust on the water inside the tube cavity 507 so that the water flows quickly inside it. Similarly, when the inner spiral blade 512 rotates, it can also generate thrust on the water inside it so that the water flows quickly inside it. Therefore, when the graphite heat exchanger body 4 exchanges heat with cold water, the flow rate of cold water inside it can also be accelerated to improve the heat exchange effect of the graphite heat exchanger body 4.

[0063] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A graphite heat exchanger filter device, comprising a housing (1), characterized in that: A pre-filter box (2) for preliminary filtering of cold water is installed at the upper part of the shell (1), a split filter box (3) for separate filtering of cold water is installed at the middle part of the shell (1), a graphite heat exchanger body (4) for heating and exchanging cold water is installed at the lower part of the shell (1), a return heat supply pipe (5) is installed on the bottom surface of the graphite heat exchanger body (4), and a stepped gear ring (6) is installed on the bottom surface of the split filter box (3); The pre-filter box (2), the flow-dividing filter box (3) and the graphite heat exchanger body (4) are installed inside the housing (1) from top to bottom; A water inlet pipe (201) is fixed to the upper end surface of the pre-filter box (2), and the water inlet pipe (201) passes through the shell (1) and is slidably connected thereto; a water outlet groove (202) is provided on the surface of one side of the pre-filter box (2) inside the pre-filter box (2); a frustum filter screen (203) is slidably provided inside the pre-filter box (2), and the water inlet pipe (201) is fixedly connected to the frustum filter screen (203); a screw rod (204) is rotatably provided on the frustum filter screen (203), and the screw rod (204) passes through the shell (1) and is threadably connected thereto; an upper guide tube (205) is fixed between the pre-filter box (2) and the diversion filter box (3); a slag discharge port (206) is provided on the surface of the pre-filter box (2) and the shell (1); and a slag collecting box (207) is fixed on the surface of the shell (1) and located at the slag discharge port (206); A water storage chamber (301) is provided inside the diverter filter box (3), a lower conduit (302) is fixed below the water storage chamber (301), a side groove (303) is provided on the inner side wall of the diverter filter box (3), a fixed plate (304) is fixed inside the side groove (303), an upper concave-convex ring (305) is fixed on the bottom surface of the fixed plate (304), a fixed rod (306) is fixed on the bottom surface of the fixed plate (304) and outside the upper concave-convex ring (305), a filter cartridge (307) is rotatably provided inside the side groove (303), an upper filter hole (308) is provided on the bottom surface of the filter cartridge (307), a water inlet (309) is provided on the side surface of the filter cartridge (307), a rotating groove (310) is provided at the end of the water inlet (309), a fixed pin (311) is fixed inside the rotating groove (310), and the fixed pin (311) is fixed inside the fixed groove (310). An opening and closing plate (312) is rotatably mounted on the pin (311), a shifting groove (313) is provided at the top of the opening and closing plate (312), a fixed shaft (314) is fixed to the inner top surface of the side groove (303), a sliding sleeve (315) is slidably mounted on the surface of the fixed shaft (314), a lower concave-convex ring (316) is fixed to the bottom end of the sliding sleeve (315), a sliding groove is provided inside the filter cartridge (307) along its axial direction, a sliding block is fixed to the surface of the lower concave-convex ring (316), and the lower concave-convex ring (316) is axially slidably connected to the filter cartridge (307) via the sliding groove and the sliding block, a spring (317) is sleeved on the sliding sleeve (315), a pressing cake (318) is fixed to the bottom end of the sliding sleeve (315), a driven shaft (319) is fixed to the bottom surface of the filter cartridge (307), and a driven gear disk (320) is fixed to the bottom end of the driven shaft (319); A first heat exchange tube (401) and a second heat exchange tube (402) are staggeredly installed inside the graphite heat exchanger body (4) along its circumferential direction; an upper bend tube (403) is installed between the top ends of the first heat exchange tube (401) and the second heat exchange tube (402); a lower bend tube (404) is installed between the bottom ends of the first heat exchange tube (401) and the second heat exchange tube (402) via a flange and bolts; a gear ring (405) is sleeved on the surfaces of the first heat exchange tube (401) and the second heat exchange tube (402); the bottom end of the lower conduit (302) is fixedly connected to the first heat exchange tube (401); and a booster pump (406) is installed at the bottom end of the second heat exchange tube (402); The return heat supply pipe (5) is installed on the bottom surface of the booster pump (406); an inner heat exchange pipe (501) is provided inside the first heat exchange pipe (401) and the second heat exchange pipe (402); a lower filter hole (502) is provided on the surface of the inner heat exchange pipe (501); an outer rotating groove (503) is provided on the surface of the first heat exchange pipe (401) and the second heat exchange pipe (402); an outer rotating ring (504) is rotatably provided inside the outer rotating groove (503); an inner rotating groove (505) is provided on the surface of the inner heat exchange pipe (501); an inner rotating ring (506) is rotatably provided inside the inner rotating groove (505); The gaps between the inner heat exchange tube (501) and the first heat exchange tube (401) and the second heat exchange tube (402) form a tube cavity (507); an outer bracket (508) is fixed between the outer rotating ring (504) and the inner rotating ring (506); an outer spiral sheet (509) is fixed on the outer bracket (508) and located inside the tube cavity (507); an inner bracket (510) is fixed on the inner wall of the inner rotating ring (506); a rotating shaft (511) is fixed on the bottom surface of the inner bracket (510) and located inside the inner heat exchange tube (501); and an inner spiral sheet (512) is fixed on the surface of the rotating shaft (511); The cold water level inside the diverter filter box (3) is located below the press cake (318); half of the filter cartridge (307) is located inside the diverter filter box (3), and the other half is located inside the water storage chamber (301); a torsion spring is installed on the fixed pin (311), and one end of the torsion spring is fixedly connected to the fixed pin (311), and the other end is in contact with the opening and closing plate (312). When the filter cartridge (307) drives the opening and closing plate (312) to rotate, and the opening and closing plate (31 2) When the push groove (313) on the opening and closing plate (312) contacts the fixed rod (306), the opening and closing plate (312) can be rotated outward to push it apart, so that the water inlet (309) can be opened. When the opening and closing plate (312) rotates, it can drive the torsion spring between it and the fixed pin (311) to first contract and then stretch and reset. When the torsion spring stretches and resets, its deformation force is greater than the resistance of the cold water to the opening and closing plate (312), and the torsion spring can rotate the opening and closing plate (312) and close the water inlet (309); The concave and convex portions on the bottom surface of the upper concave-convex ring (305) and the concave and convex portions on the upper end surface of the lower concave-convex ring (316) are arranged alternately, the top end of the spring (317) contacts the fixed plate (304), and the bottom end contacts the lower concave-convex ring (316), and the press cake (318) is located inside the filter cartridge (307) and is slidably connected thereto; The return heating pipe (5) is provided with an on-off valve, a heating pipe is provided between the return heating pipe (5) and the diversion filter box (3), and the stepped toothed ring (6) is composed of two sets of upper and lower toothed discs of different diameters, the upper toothed disc meshing with the driven toothed disc (320), and the lower toothed disc meshing with the toothed ring (405).

2. A graphite heat exchanger filter device according to claim 1, characterized in that: The frustum filter (203) is in the shape of a quadrangular pyramid, the inclined surface on the frustum filter (203) is located at the end of the slag discharge port (206), and the inner bottom surface of the pre-filter box (2) is a conical surface.

3. A graphite heat exchanger filter device according to claim 2, characterized in that: The first heat exchange tube (401) and the second heat exchange tube (402) are arranged alternately and are located inside the graphite heat exchanger body (4); the top ends of the first heat exchange tube (401) and the second heat exchange tube (402) are fixedly connected via an upper bend tube (403); flanges are fixed on the bottom ends of the first heat exchange tube (401) and the second heat exchange tube (402) and the lower bend tube (404); and the bottom ends of the first heat exchange tube (401) and the second heat exchange tube (402) are connected via the lower bend tube (404).

4. A graphite heat exchanger filter device according to claim 3, characterized in that: The gear ring (405) is fixedly connected to the outer rotating ring (504), the outer spiral sheet (509) is in contact with the inner wall of the tube cavity (507), and the inner spiral sheet (512) is in contact with the inner wall of the inner heat exchange tube (501). The upper bend tube (403) and the lower bend tube (404) are provided with inner heat exchange bend tubes inside, and the inner heat exchange bend tubes are fixedly connected to the upper bend tube (403) and the lower bend tube (404) through a bracket, and are connected to the inner heat exchange tubes (501) on both sides thereof, and the bottom end of the inner heat exchange tube (501) is fixedly connected to the first heat exchange tube (401) and the second heat exchange tube (402) through a bracket.

5. The method for using a graphite heat exchanger filter device according to claim 4, characterized in that: The following steps are involved: In the first step, cold water can be injected into the pre-filter box (2) through the water inlet pipe (201), and the cold water inside the pre-filter box (2) enters the upper conduit (205) after being initially filtered by the cone filter (203), and the impurities after the initial filtration can remain on the cone filter (203) and slide down on the cone filter (203). When it is necessary to clean the impurities on the cone filter (203), the screw rod (204) is rotated upward to drive the cone filter (203) to move upward. When the bottom end of the cone filter (203) moves to the slag discharge port (206), the impurities on the cone filter (203) can slide into the slag collection box (207), and the slag collection box (207) collects the impurities after the initial filtration; In the second step, the cold water after preliminary filtration can be transported to the shunt filter box (3) through the upper conduit (205), and the motor arranged on the bottom surface of the shunt filter box (3) can drive the stepped tooth ring (6) to rotate. When the stepped tooth ring (6) rotates, it can mesh with the driven tooth plate (320), so that the driven shaft (319) can drive the filter cartridge (307) to rotate. When the filter cartridge (307) rotates, the water inlet (309) can be opened or closed by rotating the opening and closing plate (312), so that the cold water inside the shunt filter box (3) can be divided into small streams and transported to the filter cartridge (307). The cold water inside the filter cartridge (307) can be pressurized by the pressing cake (318), and the cold water can quickly pass through the upper filter hole (308), so that the cold water can be quickly filtered again. At this time, the filtered cold water enters the water storage chamber (301); In the third step, the cold water in the water storage chamber (301) can be transported to the inner heat exchange tube (501) on the side of the first heat exchange tube (401) through the lower guide tube (302), and the cold water in the inner heat exchange tube (501) enters the tube cavity (507) after being filtered through the lower filter hole (502), and the cold water in the tube cavity (507) flows in the first heat exchange tube (401) and the second heat exchange tube (402) in an S shape. During the flow of the cold water, the cold water can be heated by the graphite heat exchanger body (4), so that the cold water can be heat exchanged by the graphite heat exchanger body (4), and the hot water after the heat exchange can flow to the diversion filter box (3) again through the return heat supply pipe (5) and the heat supply pipe for recycling; In the fourth step, the gear ring (405) can be driven to rotate by the stepped gear ring (6), and then the gear ring (405) can drive the outer bracket (508) to rotate through the outer rotating ring (504), and the outer bracket (508) can drive the outer spiral piece (509) to rotate, so that impurities adhering to the inner wall of the tube cavity (507) can be scraped off by the outer spiral piece (509), and the outer bracket (508) can drive the rotating shaft (511) to rotate through the inner rotating ring (506) and the inner bracket (510), and then the rotating shaft (511) can drive the inner spiral piece (512) to rotate, so that impurities adhering to the inner wall of the inner heat exchange tube (501) can be scraped off by the inner spiral piece (512), and when the lower bend tube (404) is opened, the impurities that fall into the lower bend tube (404) can be cleaned.

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