CN216223205U - Convenient filtration for heating system who changes - Google Patents

Convenient filtration for heating system who changes Download PDF

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Publication number
CN216223205U
CN216223205U CN202122788726.4U CN202122788726U CN216223205U CN 216223205 U CN216223205 U CN 216223205U CN 202122788726 U CN202122788726 U CN 202122788726U CN 216223205 U CN216223205 U CN 216223205U
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filter
plate
heating system
rod
ring sleeve
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Expired - Fee Related
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CN202122788726.4U
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Chinese (zh)
Inventor
田洪慧
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Individual
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Individual
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Abstract

A filter structure for a heating system convenient to replace comprises a filter box, a top cover, a connecting pipe, a water outlet pipe and a sewage outlet, wherein an auxiliary connecting device is arranged at the rear end of the outer surface of the connecting pipe, a driving mechanism is arranged in a ring sleeve, the driving mechanism drives a small gear through a belt to drive a short ruler plate to drive a connecting plate to move, the connecting plate drives a clamping plate to be separated from external equipment, so that the filter structure is prevented from being replaced more trouble, the device is convenient to use and simple to operate, the working efficiency is effectively improved, the driving mechanism is arranged at the upper end in the ring sleeve, a hand wheel drives a movable block to drive a connecting rod to drive a long toothed plate to move through a threaded rod, the long toothed plate drives the small gear to rotate through a belt through a large gear, the inconvenience in use is prevented, a dismounting mechanism is arranged at the right end in the filter box to press a button to drive a movable rod to move, so that the movable rod is matched with a fixed rod to be separated from a clamping piece, the filter screen is prevented from being disassembled more trouble.

Description

Convenient filtration for heating system who changes
Technical Field
The utility model relates to the technical field of heating systems, in particular to a filtering structure convenient to replace for a heating system.
Background
The heat supply system is a general name of a boiler room unit, an outdoor heat supply pipe network and a radiator, a power supply and utilization contract is a paid agreement signed according to the requirement of a power consumer and the power supply amount of a power supply department, the 21 st rule of an economic contract law is that the terms such as power, electric quantity, power utilization time and default responsibility, the power, the electric quantity, the power supply amount and the power supply standard are clearly specified in the contract, and a filtering structure for the heat supply system convenient to replace is required to be used in the use process of the heat supply system.
But convenient for the heating system who changes filtration generally is in water flows in the cartridge filter through the connecting pipe, flow out from the outlet pipe through filter screen and cartridge filter dual filtration, but the convenient for heating system who changes filtration is relatively poor to filtration replacement effect for the filtration of tradition, filtration replacement is comparatively troublesome in the use, lead to influencing work efficiency, and the convenient for heating system who changes filtration is relatively poor to pinion drive effect for the tradition, lead to using inconvenient, the convenient for heating system who changes filtration is relatively poor to filter screen dismantlement simultaneously, lead to work efficiency to reduce.
SUMMERY OF THE UTILITY MODEL
Technical problem to be solved
In order to overcome prior art not enough, the filtration for heating system who conveniently changes is proposed at present, it is relatively poor to the filtration replacement effect to have solved the filtration for the heating system that traditional conveniently changed, filtration change is comparatively troublesome in the use, lead to influencing work efficiency, and the filtration for the heating system that traditional conveniently changed is relatively poor to pinion drive effect, lead to using inconvenient, the filtration for the heating system that traditional conveniently changed dismantles relatively poorly to the filter screen simultaneously, lead to the problem that work efficiency reduces.
(II) technical scheme
The utility model is realized by the following technical scheme: the utility model provides a filtering structure for a heating system convenient to replace, which comprises a filtering box, wherein a connecting pipe is arranged at the upper right end of the filtering box, an auxiliary connecting device is arranged at the rear end of the outer surface of the connecting pipe, a dismounting mechanism is arranged at the right end in the filtering box, the auxiliary connecting device comprises a ring sleeve, a driving mechanism, a connecting hole, a clamping plate, a first sliding rail, a connecting plate, a short ruler plate, a pinion and a belt, the driving mechanism is arranged at the upper end in the ring sleeve, the connecting hole is embedded in the middle of the ring sleeve, the clamping plate is horizontally and oppositely arranged on the inner side surface of the connecting hole from top to bottom, the first sliding rail is horizontally and oppositely fixed in the ring sleeve from top to bottom, the connecting plate is in sliding connection with the inner side surface of the first sliding rail, the connecting plate is fixedly connected with the left end of the clamping plate, the short ruler plate is fixedly connected with the left end of the connecting plate, and the pinion is mutually meshed with the top of the short ruler plate, the belt is wound in the middle of the front end face of the pinion, and the ring sleeve is fixedly connected with the rear end of the outer surface of the connecting pipe.
Further, the top cover is arranged at the top of the filter box, the water outlet pipe is arranged at the lower left end of the filter box, a sewage discharge outlet is formed in the middle of the bottom end of the filter box, a bearing plate is arranged at the lower end inside the filter box, through holes are formed in the left and right sides of the inside of the bearing plate in a horizontally opposite embedded mode, a filter cartridge is arranged at the top of the bearing plate, a filter screen is obliquely arranged inside the filter cartridge, and drain holes are formed in the bottom of the filter cartridge in an equidistance embedded mode.
Further, actuating mechanism includes threaded rod, hand wheel, retaining member, movable block, connecting rod, rectangular pinion rack, second slide rail and gear wheel, the threaded rod top is provided with the hand wheel to the threaded rod is connected with the hand wheel bottom, the retaining member is installed in threaded rod surface upper end, movable block and threaded rod surface threaded connection, the level articulates relatively in terminal surface before the movable block about the connecting rod, rectangular pinion rack is articulated with the connecting rod left end, second slide rail and the inside upper end fixed connection of ring cover to rectangular pinion rack and second slide rail bottom sliding connection, gear wheel and rectangular pinion rack bottom intermeshing, the threaded rod is connected with the inside upper end of ring cover, gear wheel and belt medial surface upper end sliding connection.
Further, the disassembly mechanism comprises a shell, a fixed rod, a movable rod, a button, a spring and a clamping piece, wherein the fixed rod is fixed at the left end inside the shell, the movable rod is hinged to the right end inside the shell, the button is fixedly connected with the right lower end of the movable rod, the spring is fixedly connected with the right upper end of the movable rod, the clamping piece is clamped with the fixed rod and the movable rod, the shell is fixedly connected with the right upper end inside the filter cartridge, and the clamping piece is fixedly connected with the right end of the bottom of the filter screen.
Furthermore, the first slide rail is provided with two altogether to first slide rail medial surface all is smooth plane.
Furthermore, the diameter of the hand wheel is set to be 10 cm, and a layer of anti-skid grains is arranged on the outer surface of the hand wheel.
Furthermore, retaining member length sets up to 8 centimetres to the retaining member passes through fixing bolt and ring cover top middle part fixed connection.
Further, the diameter of the gear wheel is set to be 4 cm, and the ratio of the diameter of the gear wheel to the diameter of the pinion is 2: 1.
Further, the spring length is set to 2 cm, and the spring can provide a force of 2N.
Furthermore, the clamping plate is made of aluminum alloy.
Furthermore, the filter box is made of stainless steel.
(III) advantageous effects
Compared with the prior art, the utility model has the following beneficial effects:
1) the relatively poor problem of effect is changed to filtration to the convenient heating system filtration who changes of tradition, through set up supplementary connecting device in connecting pipe surface rear end, there is actuating mechanism at ring cover internally mounted, actuating mechanism drives the pinion through the belt and makes the activity of short chi board drive connecting plate, and the connecting plate drives clamp plate and external equipment phase separation, prevents that filtration from changing more troublesome, and this device convenient to use easy operation has improved work efficiency effectively.
2) The problem of the convenient for heating system who changes of tradition filtration for the effect relatively poor to pinion drive is solved, through set up actuating mechanism in the inside upper end of ring cover, the hand wheel makes the movable block drive the long pinion rack of connecting rod drive activity through the threaded rod, and long pinion rack makes the belt drive pinion gear through the gear wheel and rotates, prevents to use inconveniently.
3) The relatively poor problem is dismantled to the filter screen to the convenient filtration structure for heating system who changes of solution tradition, through having set up detaching mechanism at the inside right-hand member of rose box, presses the button, and the button drives the movable rod activity, makes movable rod cooperation dead lever and fastener phase separation, prevents that the filter screen from dismantling more troublesome.
Drawings
Other features, objects and advantages of the utility model will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a schematic cross-sectional front view of the present invention;
FIG. 3 is a schematic view of an auxiliary connecting device according to the present invention;
FIG. 4 is a partial side cross-sectional structural view of the auxiliary connection device of the present invention;
FIG. 5 is a front cross-sectional structural schematic view of the drive mechanism of the present invention;
fig. 6 is an enlarged schematic view of the detaching mechanism a of the present invention.
In the figure: a filter box-1, a top cover-2, a connecting pipe-3, an auxiliary connecting device-4, a dismounting mechanism-5, a water outlet pipe-6, a sewage outlet-7, a bearing plate-8, a through hole-9, a filter cylinder-10, a filter screen-11, a drain hole-12, a ring sleeve-41, a driving mechanism-42, a connecting hole-43, a clamping plate-44, a first slide rail-45, a connecting plate-46, a short ruler plate-47, a pinion-48, a belt-49, a threaded rod-421, a hand wheel-422, a locking piece-423, a movable block-424, a connecting rod-425, a long toothed plate-426, a second slide rail-427, a bull gear-428, a shell-51, a fixed rod-52, a movable rod-53, a movable rod-423, Button-54, spring-55, clip-56.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the utility model and are not intended to limit the utility model.
Referring to fig. 1 and 2, the present invention provides a filter structure for a heating system, which is convenient to replace, by improvement, the filter structure comprises a filter box 1, a connecting pipe 3 is arranged at the upper right end of the filter box 1, the filter box 1 is made of stainless steel, and has an advantage of longer service life, an auxiliary connecting device 4 is arranged at the rear end of the outer surface of the connecting pipe 3, a dismounting mechanism 5 is arranged at the right end inside the filter box 1, a top cover 2 is arranged at the top of the filter box 1, a water outlet pipe 6 is arranged at the lower left end of the filter box 1, a sewage outlet 7 is arranged at the middle bottom end of the filter box 1, a bearing plate 8 is arranged at the lower end inside the filter box 1, through holes 9 are relatively embedded in the bearing plate 8 in a left-right horizontal direction, a filter cartridge 10 is arranged at the top of the bearing plate 8, a filter screen 11 is obliquely arranged inside the filter cartridge 10, and drain holes 12 are embedded in the bottom of the filter cartridge 10 at equal intervals.
Referring to fig. 3 and 4, the present invention provides a filtering structure for a heating system, which is convenient to replace, by improving the filtering structure, an auxiliary connecting device 4 includes a ring sleeve 41, a driving mechanism 42, a connecting hole 43, a clamping plate 44, a first sliding rail 45, a connecting plate 46, a short plate 47, a pinion 48 and a belt 49, the driving mechanism 42 is disposed at the upper end inside the ring sleeve 41 to facilitate better fixing and mounting of the driving mechanism 42, the connecting hole 43 is embedded in the middle of the ring sleeve 41 to facilitate better fixing and mounting of the connecting hole 43, the clamping plate 44 is horizontally mounted on the inner side of the connecting hole 43 from left to right, the clamping plate 44 is made of aluminum alloy, which has the advantage of stronger corrosion resistance to facilitate better fixing and mounting of the clamping plate 44, the first sliding rail 45 is horizontally fixed inside the ring sleeve 41 from top to bottom, the first sliding rail 45 is provided with two, and the inner side of the first sliding rail 45 is a smooth plane, so that the better at first slide rail 45 medial surface of connecting plate 46 slides, connecting plate 46 and first slide rail 45 medial surface sliding connection, and connecting plate 46 and clamp plate 44 left end fixed connection, so that the better drive clamp plate 44 of connecting plate 46 moves about, short chi board 47 and connecting plate 46 left end fixed connection, so that the better carries out fixed mounting to short chi board 47, pinion 48 and short chi board 47 top intermeshing, so that the better carries out fixed mounting to pinion 48, belt 49 twines in pinion 48 preceding terminal surface middle part, so that the better carries out fixed mounting to belt 49, ring cover 41 and the 3 outer surface rear end fixed connection of connecting pipe.
Referring to fig. 5, the present invention provides a filtering structure for a heating system, which is convenient to replace, by improving the filtering structure, a driving mechanism 42 includes a threaded rod 421, a hand wheel 422, a locking member 423, a movable block 424, a connecting rod 425, a long toothed plate 426, a second sliding rail 427, and a large gear 428, the top of the threaded rod 421 is provided with the hand wheel 422, the threaded rod 421 is connected to the bottom of the hand wheel 422, the diameter of the hand wheel 422 is 10 cm, the outer surface of the hand wheel 422 is provided with a layer of anti-slip texture to prevent the occurrence of hand slip during use, the locking member 423 is installed on the upper end of the outer surface of the threaded rod 421, the length of the locking member 423 is 8 cm, the locking member 423 is fixedly connected to the middle of the top end of the ring sleeve 41 through a fixing bolt to better lock the threaded rod 421, the movable block 424 is in threaded connection with the outer surface of the threaded rod 421 to better drive the connecting rod 425 to move, the connecting rod 425 is hinged to the front end face of the movable block 424 horizontally and oppositely left and right, so that the connecting rod 425 can be better fixedly installed, the long toothed plate 426 is hinged to the left end of the connecting rod 425, so that the long toothed plate 426 can be better fixedly installed, the second sliding rail 427 is fixedly connected with the upper end inside the ring sleeve 41, the long toothed plate 426 is in sliding connection with the bottom of the second sliding rail 427, so that the long toothed plate 426 can better slide on the top of the second sliding rail 427, the large gear 428 is meshed with the bottom of the long toothed plate 426, the diameter of the large gear 428 is set to be 4 cm, the ratio of the diameter of the large gear 428 to the diameter of the small gear 48 is 2:1, so that a better driving effect can be achieved, the threaded rod 421 is connected with the upper end inside the ring sleeve 41, and the large gear 428 is in sliding connection with the upper end of the inner side face of the belt 49.
Referring to fig. 6, the present invention provides a filter structure for a heating system, which is convenient to replace, by improving the filter structure, a detaching mechanism 5 includes a housing 51, a fixed rod 52, a movable rod 53, a button 54, a spring 55 and a clip 56, the fixed rod 52 is fixed at the left end inside the housing 51 to better fix the fixed rod 52, the movable rod 53 is hinged with the right end inside the housing 51 to better fix the movable rod 53, the button 54 is fixedly connected with the right lower end of the movable rod 53 to better fix the button 54, the spring 55 is fixedly connected with the right upper end of the movable rod 53, the length of the spring 55 is 2 cm, and the force provided by the spring 55 is 2N to achieve a better resetting effect, the clip 56 is clipped between the fixed rod 52 and the movable rod 53 to better clip the clip 56, the shell 51 is fixedly connected with the right upper end inside the filter cartridge 10, and the clamping piece 56 is fixedly connected with the right end at the bottom of the filter screen 11.
This patent clamp plate 44 for the aluminum alloy material use aluminium to add the alloy of other alloying element of a certain amount as the base, be one of light metal material, the aluminum alloy is except having the general characteristic of aluminium, because the difference of the kind and the quantity that add the alloying element has the concrete characteristic of some alloy again, the density of aluminum alloy is 2.63 ~ 2.85g/cm thick year, have higher intensity (σ b is 110 ~ 650MPa), specific strength is close high alloy steel, specific stiffness surpasss the steel, there are good casting performance and plastic working ability, good electric conduction, heat conductivility, good corrosion resistance and weldability.
The utility model relates to a conveniently-replaced filtering structure for a heating system, which has the working principle as follows:
firstly, the device is moved to a place needing to be used, and then the connecting pipe 3 is connected with external equipment;
secondly, water flows back to the connecting pipe 3, flows into the filter box 1 through the connecting pipe 3, is filtered for the first time through the filter screen 11, is filtered for the second time through the filter cylinder 10, and finally flows out of the water outlet pipe 6, the filter cylinder 10 can filter the backflow water, impurities in the backflow water are removed, and the situation that the pipeline is blocked by the impurities is reduced;
thirdly, when the filtering structure needs to be replaced, the rotation state of the threaded rod 421 is restored through the locking member 423, the hand wheel 422 is rotated anticlockwise, the hand wheel 422 drives the threaded rod 421 to rotate, the movable block 424 moves on the outer surface of the threaded rod 421, the movable block 424 drives the connecting rod 425 to swing, the connecting rod 425 drives the long toothed plate 426 to slide at the bottom of the second sliding rail 427, the long toothed plate 426 drives the large gear 428 to rotate, the large gear 428 drives the small gear 48 to rotate through a belt, the small gear 428 drives the connecting plate 46 to slide on the inner side surface of the first sliding rail 45 through the short-sized plate 47, the connecting plate 46 drives the clamping plate 44 to be separated from external equipment, the external equipment is pulled out of the connecting pipe 3, and the effect of replacing the filtering structure is achieved;
fourthly, when the filter screen 11 needs to be disassembled, the top cover 2 is separated from the filter box 1, the button 54 is pressed, the button 54 drives the movable rod 53 to move, the movable rod 53 applies pressure to the spring 55, the spring 55 is stressed to contract, the opening of the movable rod 53 and the fixed rod 52 is enlarged, the clamping piece 56 on the filter screen 11 is separated from the movable rod 53 and the fixed rod 52, and the filter screen 11 is taken out of the filter cylinder 10;
fifthly, after this device finishes using, open top cap 2, take out cartridge filter 10, then take off filter screen 11 in the cartridge filter 10, then clear up the impurity in cartridge filter 10 and rose box 1 and make sewage pass through drain 7 and discharge, accomodate this device at last can.
The basic principles and main features of the present invention and the advantages of the present invention have been shown and described, and the standard parts used in the present invention are all available on the market, the special-shaped parts can be customized according to the description and the accompanying drawings, the specific connection mode of each part adopts the conventional means of bolt and rivet, welding and the like mature in the prior art, the machinery, parts and equipment adopt the conventional type in the prior art, and the circuit connection adopts the conventional connection mode in the prior art, and the details are not described herein.
It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (9)

1. A filtering structure convenient to replace for a heating system comprises a filtering box (1), wherein a connecting pipe (3) is arranged at the upper right end of the filtering box (1);
the method is characterized in that: the filter box is characterized by further comprising an auxiliary connecting device (4) and a dismounting mechanism (5), wherein the auxiliary connecting device (4) is arranged at the rear end of the outer surface of the connecting pipe (3), the dismounting mechanism (5) is arranged at the right end inside the filter box (1), the auxiliary connecting device (4) comprises a ring sleeve (41), a driving mechanism (42), a connecting hole (43), a clamping plate (44), a first sliding rail (45), a connecting plate (46), a short ruler plate (47), a small gear (48) and a belt (49), the driving mechanism (42) is arranged at the upper end inside the ring sleeve (41), the connecting hole (43) is embedded into the middle of the ring sleeve (41), the clamping plate (44) is horizontally and relatively installed on the inner side surface of the connecting hole (43) from left to right, the first sliding rail (45) is horizontally and relatively fixed inside the ring sleeve (41), and the connecting plate (46) is in sliding connection with the inner side surface of the first sliding rail (45), the connecting plate (46) is fixedly connected with the left end of the clamping plate (44), the short ruler plate (47) is fixedly connected with the left end of the connecting plate (46), the pinion (48) is meshed with the top of the short ruler plate (47), the belt (49) is wound in the middle of the front end face of the pinion (48), and the ring sleeve (41) is fixedly connected with the rear end of the outer surface of the connecting pipe (3).
2. A filter structure for a heating system convenient to replace according to claim 1, wherein: the utility model discloses a filter cartridge, including rose box (1), bearing board (8), loading board (8), filter box (1) top is provided with top cap (2), the lower extreme is provided with outlet pipe (6) about rose box (1) left side, rose box (1) bottom middle part is provided with drain (7), the inside lower extreme of rose box (1) is provided with loading board (8), the level relative embedding has through-hole (9) about loading board (8) is inside, loading board (8) top is provided with cartridge filter (10), the inside slope of cartridge filter (10) is provided with filter screen (11), the embedding of cartridge filter (10) bottom equidistance has wash port (12).
3. A filter structure for a heating system convenient to replace according to claim 1, wherein: the driving mechanism (42) comprises a threaded rod (421), a hand wheel (422), a locking piece (423), a movable block (424), a connecting rod (425), a long toothed plate (426), a second sliding rail (427) and a large gear (428), the hand wheel (422) is arranged at the top of the threaded rod (421), the threaded rod (421) is connected with the bottom of the hand wheel (422), the locking piece (423) is installed at the upper end of the outer surface of the threaded rod (421), the movable block (424) is in threaded connection with the outer surface of the threaded rod (421), the connecting rod (425) is horizontally hinged to the front end face of the movable block (424) left and right, the long toothed plate (426) is hinged to the left end of the connecting rod (425), the second sliding rail (427) is fixedly connected with the inner upper end of a ring sleeve (41), the long toothed plate (426) is in sliding connection with the bottom of the second sliding rail (427), and the large gear (428) is meshed with the bottom of the long toothed plate (426), the threaded rod (421) is connected with the upper end inside the ring sleeve (41), and the large gear (428) is connected with the upper end of the inner side face of the belt (49) in a sliding mode.
4. A filter structure for a heating system convenient to replace according to claim 1, wherein: disassembly body (5) are including casing (51), dead lever (52), movable rod (53), button (54), spring (55) and fastener (56), casing (51) inside left end is fixed with dead lever (52), movable rod (53) are articulated with casing (51) inside right-hand member, button (54) and movable rod (53) right side lower extreme fixed connection, spring (55) and movable rod (53) upper right end fixed connection, fastener (56) and dead lever (52) and movable rod (53) centre looks joint, casing (51) and cartridge filter (10) inside upper right end fixed connection, fastener (56) and filter screen (11) bottom right-hand member fixed connection.
5. A filter structure for a heating system convenient to replace according to claim 1, wherein: the first sliding rails (45) are provided with two sliding rails, and the inner side faces of the first sliding rails (45) are smooth planes.
6. A filter structure for a heating system convenient to replace according to claim 3, wherein: the diameter of the hand wheel (422) is set to be 10 cm, and a layer of anti-skid grains is arranged on the outer surface of the hand wheel (422).
7. A filter structure for a heating system convenient to replace according to claim 3, wherein: the length of the locking piece (423) is set to be 8 cm, and the locking piece (423) is fixedly connected with the middle part of the top end of the ring sleeve (41) through a fixing bolt.
8. A filter structure for a heating system convenient to replace according to claim 3, wherein: the diameter of the bull gear (428) is set to be 4 cm, and the ratio of the diameter of the bull gear (428) to the diameter of the pinion gear (48) is 2: 1.
9. A conveniently replaceable filter structure for a heating system according to claim 4, wherein: the spring (55) is set to 2 cm in length and the spring (55) is capable of providing a force of 2N.
CN202122788726.4U 2021-11-15 2021-11-15 Convenient filtration for heating system who changes Expired - Fee Related CN216223205U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202122788726.4U CN216223205U (en) 2021-11-15 2021-11-15 Convenient filtration for heating system who changes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202122788726.4U CN216223205U (en) 2021-11-15 2021-11-15 Convenient filtration for heating system who changes

Publications (1)

Publication Number Publication Date
CN216223205U true CN216223205U (en) 2022-04-08

Family

ID=80941608

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202122788726.4U Expired - Fee Related CN216223205U (en) 2021-11-15 2021-11-15 Convenient filtration for heating system who changes

Country Status (1)

Country Link
CN (1) CN216223205U (en)

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Granted publication date: 20220408