CN214319388U - Lubricating oil production is with filter equipment of being convenient for clean filter core - Google Patents
Lubricating oil production is with filter equipment of being convenient for clean filter core Download PDFInfo
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- CN214319388U CN214319388U CN202120066760.8U CN202120066760U CN214319388U CN 214319388 U CN214319388 U CN 214319388U CN 202120066760 U CN202120066760 U CN 202120066760U CN 214319388 U CN214319388 U CN 214319388U
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Abstract
The utility model provides a filtering device which is used for producing lubricating oil and is convenient for cleaning a filter element, comprising a device box body, an oil pipe and two filtering and cleaning mechanisms; the top in the device box body is provided with a water bath chamber, and the bottom in the device box body is divided into a filtering chamber and two cleaning chambers by arranging two parallel clapboards; the oil pipe is arranged in the water bath cavity in a bending way; each filtering and cleaning mechanism comprises a filtering box, a connecting rod and a cleaning manifold; the connecting rod is used for driving the filter box to move along the transverse direction and rotate the filter box; a plurality of flushing nozzles are arranged on the cleaning manifold at intervals; the two partition plates are respectively provided with a gate opening which is convenient for the filter box to transversely pass through, each partition plate is internally provided with a sliding chute, and a gate is arranged in each sliding chute; each gate is provided with a screw rod in a matching way. The utility model discloses a filter equipment is through setting up two filter cassettes, and one filter cassette carries out lubricating oil filtration, another filter cassette washs, is difficult for delaying lubricating oil production and processing process, switches convenient and fast between two filter cassettes.
Description
Technical Field
The utility model belongs to the technical field of lubricating oil production processing equipment, concretely relates to lubricating oil production is with filter equipment of clean filter core of being convenient for.
Background
Lubricating oil is a liquid or semisolid lubricant used on various types of mechanical equipment to reduce friction and protect machinery and workpieces, and mainly plays roles of lubrication, cooling, rust prevention, cleaning, sealing, buffering and the like.
At present, in the process of producing and processing lubricating oil, the lubricating oil needs to be filtered so as to remove impurities doped in the lubricating oil. However, in the existing filtering device, the filtering mechanism is installed in the device and is not easy to replace and clean, and if the filtering mechanism is to be detached, replaced or cleaned, the device needs to be stopped for a long time, so that the production and processing process of lubricating oil is delayed, and the working efficiency of lubricating oil filtration is affected.
SUMMERY OF THE UTILITY MODEL
There is the difficult change of filter structure and abluent problem to current filter equipment for lubricating oil production, the utility model provides a filter equipment of clean filter core of being convenient for lubricating oil production, this filter equipment is through setting up two filter cartridges, and one filter cartridge carries out lubricating oil filtration, another filter cartridge washs, is difficult for delaying lubricating oil production processing process, switches convenient and fast between two filter cartridges.
The utility model discloses a following technical scheme realizes:
a filtering device convenient for cleaning a filter element for lubricating oil production comprises a device box body, wherein a water bath chamber is arranged at the top in the device box body, the bottom in the device box body is divided into a filtering chamber and two cleaning chambers by arranging two parallel partition plates, and the two cleaning chambers are symmetrically arranged along the filtering chamber in the left-right direction;
the inside of the water bath cavity is filled with hot water, and the top and the bottom of the water bath cavity are respectively provided with a hot water inlet and a hot water outlet; when the water bath device is used, the hot water inlet is externally connected with a hot water source, and water in the water bath chamber flows out from the hot water outlet to form hot water circulation;
the oil pipe is arranged in the water bath cavity in a bending mode, the top end of the oil pipe penetrates through the top of the water bath cavity, and the bottom end of the oil pipe penetrates through the bottom of the water bath cavity and is communicated with the filtering cavity; specifically, the top end and the bottom end of the oil pipe are hermetically fixed with the device box body, so that water leakage is avoided; the bottom end surface of the oil pipe is flush with the outer side wall surface of the bottom end of the water bath chamber; when the filter is used, lubricating oil to be filtered is externally connected to the top end of the oil pipe, enters the oil pipe, is heated in a water bath chamber in a water bath mode, and flows out of the bottom end of the oil pipe;
the filter cleaning device comprises a filter chamber, and is characterized by further comprising two filter cleaning mechanisms, wherein the two filter cleaning mechanisms are arranged along the filter chamber in a bilateral symmetry manner, and each filter cleaning mechanism comprises a filter box, a connecting rod and a cleaning manifold; the top opening of the filter box is arranged, and the bottom of the filter box is provided with a filter screen; one end of the connecting rod is fixedly connected with the filter box, the other end of the connecting rod transversely penetrates through the side wall of the device box body, the connecting rod is movably connected with the side wall of the device box body, the connecting rod is used for driving the filter box to transversely move and rotate the filter box, and the filter box can be transversely pushed and pulled and can be rotated through the filter box; the outer side wall of the device box body is fixedly provided with a water pump, a water inlet of the water pump is communicated with the inside of the water bath cavity, the cleaning manifold is arranged in the cleaning cavity, a plurality of flushing nozzles are arranged on the cleaning manifold at intervals, and the cleaning manifold is communicated with a water outlet of the water pump; the water in the water bath chamber can be pumped into the cleaning manifold through the water pump, and is sprayed out through the washing nozzle to clean the filter box in the cleaning chamber, and the filter box can be rotated during cleaning; the bottom of the cleaning chamber is provided with a water outlet so as to be convenient for discharging waste water;
the two partition plates are respectively provided with a gate opening which is convenient for the filter box to transversely pass through, a sliding groove is arranged in each partition plate, a gate is arranged in each sliding groove, and the gate is used for sealing the gate opening; the device comprises a device box body, a plurality of gates and a plurality of screw rods, wherein the device box body is provided with a side wall, the side wall is provided with a plurality of internal thread holes, the internal thread holes extend along the transverse direction, each gate is provided with a screw rod in a matched manner, one end of each screw rod is in threaded connection with the internal thread hole of the gate, the other end of each screw rod transversely penetrates through the side wall of the device box body, and the screw rods are rotatably connected with the side wall of the device box body; the gate can be pushed to slide in the sliding groove by rotating the screw rod, so that the gate opening is opened or closed; when the gate is opened, the connecting rod can push the filter box to enter the filter chamber from the cleaning chamber and is positioned below the bottom end of the oil pipe, and lubricating oil flowing out of the oil pipe enters the filter box to be filtered; an oil outlet is formed in the bottom of the filtering chamber, so that the filtered lubricating oil can be conveniently discharged;
and each connecting rod and the screw rod are respectively provided with a hand-operated wheel at one end outside the device box body, and the connecting rods and the screw rods are convenient to control through the hand-operated wheels.
Further limiting, the device box body comprises a water tank and a filter box, the water tank is arranged at the top of the filter box, and the water tank is fixedly connected with the filter box through a plurality of bolts; specifically, flanges are arranged on the outer side wall of the bottom end of the water tank and the outer side wall of the top end of the filter box, so that bolt connection is facilitated; a sealing gasket is arranged on the contact surface between the water tank and the filter tank, so that internal fluid is prevented from leaking out; the water bath chamber is arranged in the water tank, and the filtering chamber and the two cleaning chambers are arranged in the filtering tank; the structure is convenient for maintaining the filtering and cleaning mechanism in the filter box.
Further limit, the lateral wall is equipped with the glass window before the device box, is convenient for observe inside filtering chamber and two washing chambers through the glass window.
Further inject, the bottom of filtering chamber is the ascending hourglass hopper-shaped of opening in the device box, just the oil-out is linked together with the funnel bottom, and the lubricating oil that can be convenient for filter chamber in the device box gets into the oil-out through the position of leaking hopper bottom.
Further inject, this filter equipment still includes the supporting seat, device box fixed mounting can ensure the steadiness of device box in the top of supporting seat.
Further inject, every both sides all are equipped with the slider parallel with the connecting rod axis around the top of filter cartridge, the bottom outside wall of water bath cavity is equipped with the spacing groove that corresponds with the slider, and when the connecting rod promoted the filter cartridge and gets into and filter the cavity, the slider and the spacing groove sliding fit at filter cartridge top can avoid the filter cartridge upset.
The device is further limited, each connecting rod is provided with a sealing seat, the sealing seats are fixedly arranged on the outer side wall of the device box body, the connecting rods are in clearance fit with the sealing seats, the connecting rods can rotate and axially move relative to the sealing seats, and the sealing seats are used for guiding the connecting rods and sealing the clearance between the connecting rods and the device box body; specifically, the sealing seat comprises a base and a sealing ring inside the base, and the sealing ring is sleeved on the connecting rod; and each screw rod is provided with a sealing bearing, the sealing bearings are fixedly arranged on the outer side wall of the device box body, and the screw rods are rotatably connected with the sealing bearings.
According to the above technical scheme, the utility model provides a pair of lubricating oil production is with filter equipment of clean filter core of being convenient for, beneficial effect lies in: the filter device is provided with the two filter boxes, one filter box is used for filtering lubricating oil, the other filter box is used for cleaning, the production and processing process of the lubricating oil is not easy to delay, and the two filter boxes are convenient and quick to switch; this filter equipment treats filterable lubricating oil through the water-bath heating, can improve the flow property of lubricating oil, glues thick adhesion when avoiding lubricating oil to filter, improves the filter effect.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
Fig. 1 is a front view of the present invention.
Fig. 2 is a schematic diagram of the internal structure of the present invention.
Fig. 3 is a sectional view taken along a line a-a in fig. 1.
Fig. 4 is a sectional view taken along the line B-B in fig. 1.
In the drawings: 1-device box body, 11-water bath chamber, 12-filtering chamber, 13-cleaning chamber, 14-hot water inlet, 15-hot water outlet, 16-water outlet, 17-oil outlet, 18-water tank, 19-filtering tank, 10-glass window, 2-clapboard, 21-gate, 22-chute, 23-gate, 24-internal thread hole, 25-screw, 3-oil pipe, 41-filtering box, 42-connecting rod, 43-cleaning manifold, 44-filtering net, 45-washing nozzle, 46-sliding block, 47-limiting groove, 5-water pump, 6-hand wheel, 7-supporting seat, 8-sealing seat and 9-sealing bearing.
Detailed Description
Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and therefore are only examples, and the protection scope of the present invention is not limited thereby.
In the description of the present application, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", "front", "rear", "left", "right", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus should not be construed as limiting the present invention.
As shown in fig. 1 to 4, a filtering device for conveniently cleaning a filter element for lubricating oil production comprises a device box body 1, a supporting seat 7, an oil pipe 3 and two filtering and cleaning mechanisms;
a water bath chamber 11 is arranged at the top in the device box body 1, the bottom in the device box body 1 is divided into a filtering chamber 12 and two cleaning chambers 13 by arranging two parallel clapboards 2, and the two cleaning chambers 13 are arranged along the filtering chamber 12 in a bilateral symmetry manner; the inside of the water bath chamber 11 is filled with hot water, and the top and the bottom of the water bath chamber 11 are respectively provided with a hot water inlet 14 and a hot water outlet 15; when in use, the hot water inlet 14 is externally connected with a hot water source, and water in the water bath cavity 11 flows out from the hot water outlet 15 to form hot water circulation; the device box body 1 is fixedly arranged at the top end of the supporting seat 7, so that the stability of the device box body 1 can be ensured;
the oil pipe 3 is arranged inside the water bath chamber 11 in a bending mode, the top end of the oil pipe 3 penetrates through the top of the water bath chamber 11, and the bottom end of the oil pipe 3 penetrates through the bottom of the water bath chamber 11 and is communicated with the filtering chamber 12; specifically, the top end and the bottom end of the oil pipe 3 are hermetically fixed with the device box body 1, so that water leakage is avoided; the bottom end surface of the oil pipe 3 is flush with the outer side wall surface of the bottom end of the water bath chamber 11; when the oil-water heating device is used, lubricating oil to be filtered is externally connected to the top end of the oil pipe 3, enters the oil pipe 3 and then is heated in a water bath mode in the water bath cavity 11 and flows out of the bottom end of the oil pipe 3;
the two filtering and cleaning mechanisms are symmetrically arranged along the left side and the right side of the filtering chamber 12, and each filtering and cleaning mechanism comprises a filtering box 41, a connecting rod 42 and a cleaning manifold 43; the top of the filter box 41 is provided with an opening, and the bottom is provided with a filter screen 44; one end of the connecting rod 42 is fixedly connected with the filter box 41, and the other end of the connecting rod penetrates through the side wall of the device box body 1 along the transverse direction, the connecting rod 42 is movably connected with the side wall of the device box body 1, the connecting rod 42 is used for driving the filter box 41 to move along the transverse direction and rotate the filter box 41, and the filter box 41 can be pushed and pulled along the transverse direction and the filter box 41 can be rotated through the filter box 41; the outer side wall of the device box body 1 is fixedly provided with a water pump 5, the water inlet of the water pump 5 is communicated with the inside of the water bath chamber 11, the cleaning manifold 43 is arranged inside the cleaning chamber 13, the cleaning manifold 43 is provided with a plurality of flushing nozzles 45 at intervals, and the cleaning manifold 43 is communicated with the water outlet of the water pump 5; the water pump 5 in the water bath chamber 11 can be pumped into the cleaning manifold 43 through the water pump 5 and is sprayed out through the cleaning nozzle 45 to clean the filter box 41 in the cleaning chamber 13, and the filter box 41 can be rotated during cleaning; the bottom of the cleaning chamber 13 is provided with a water outlet 16, which is convenient for discharging waste water;
the front side and the rear side of the top end of each filter box 41 are respectively provided with a sliding block 46 parallel to the axis of the connecting rod 42, the outer side wall surface of the bottom end of the water bath chamber 11 is provided with a limiting groove 47 corresponding to the sliding block 46, when the connecting rod 42 pushes the filter box 41 to enter the filter chamber 12, the sliding block 46 at the top of the filter box 41 is in sliding fit with the limiting groove 47, and the filter box 41 can be prevented from overturning;
two partition plates 2 are respectively provided with a gate 21 for facilitating the filter box 41 to transversely pass through, a sliding chute 22 is arranged in each partition plate 2, a gate 23 is arranged in each sliding chute 22, and each gate 23 is used for sealing the gate 21; internal threaded holes 24 extending in the transverse direction are formed in the gates 23, each gate 23 is provided with a screw 25 in a matched mode, one end of each screw 25 is in threaded connection with the internal threaded hole 24 of the gate 23, the other end of each screw 25 transversely penetrates through the side wall of the device box body 1, and each screw 25 is rotatably connected with the side wall of the device box body 1; the gate 23 can be pushed to slide in the chute 22 by rotating the screw 25, so that the gate 21 is opened or the gate 21 is closed; when the gate 21 is opened, the connecting rod 42 can push the filter box 41 to enter the filter chamber 12 from the cleaning chamber 13 and is positioned below the bottom end of the oil pipe 3, and the lubricating oil flowing out of the oil pipe 3 enters the filter box 41 for filtering; an oil outlet 17 is formed in the bottom of the filtering chamber 12, so that filtered lubricating oil can be conveniently discharged; the bottom of the filtering chamber 12 in the device box body 1 is in a funnel shape with an upward opening, the oil outlet 17 is communicated with the bottom of the funnel, and lubricating oil in the filtering chamber 12 in the device box body 1 can conveniently enter the oil outlet 17 through the bottom of the funnel;
each connecting rod 42 is provided with a sealing seat 8, the sealing seat 8 is fixedly arranged on the outer side wall of the device box body 1, the connecting rods 42 are in clearance fit with the sealing seats 8, the connecting rods 42 can rotate and axially move relative to the sealing seats 8, and the sealing seats 8 are used for guiding the connecting rods 42 and sealing the clearance between the connecting rods 42 and the device box body 1; specifically, the sealing seat 8 comprises a base and a sealing ring inside the base, and the sealing ring is sleeved on the connecting rod 42; each screw 25 is provided with a sealing bearing 9, the sealing bearing 9 is fixedly arranged on the outer side wall of the device box body 1, and the screw 25 is rotatably connected with the sealing bearing 9; every be located the outer one end of device box 1 on connecting rod 42 and the screw rod 25 and all install hand wheel 6, be convenient for control connecting rod 42 and screw rod 25 through hand wheel 6.
In the embodiment, the device box body 1 comprises a water tank 18 and a filter tank 19, the water tank 18 is arranged at the top of the filter tank 19, and the water tank 18 is fastened and connected with the filter tank 19 through a plurality of bolts; specifically, the outer side wall of the bottom end of the water tank 18 and the outer side wall of the top end of the filter box 19 are both provided with flanges, so that bolt connection is facilitated; a sealing gasket is arranged on the contact surface between the water tank 18 and the filter tank 19 to prevent internal fluid from leaking out; the water bath chamber 11 is arranged in the water tank 18, and the filtering chamber 12 and the two cleaning chambers 13 are arranged in the filtering tank 19; this arrangement facilitates maintenance of the filter cleaning mechanism within the filter box 19.
In this embodiment, the front side wall of the device case 1 is provided with a glass window 10, and the inside of the filtering chamber 12 and the inside of the two cleaning chambers 13 can be conveniently observed through the glass window 10.
The working principle of the embodiment is as follows: when the filtering device filters lubricating oil, one of the screw rods 25 is controlled to rotate to open one of the gates 21, the filter box 41 is pushed to enter the filtering chamber 12 through the control connecting rod 42, the sliding block 46 at the top of the filter box 41 is ensured to be in sliding fit with the limiting groove 47, the filter box 41 can be prevented from being turned over, the filter box 41 is positioned below the bottom end of the oil pipe 3, and the lubricating oil flowing out of the oil pipe 3 enters the filter box 41 to be filtered; the filtered lubricating oil in the filtering chamber 12 flows out from the bottom oil outlet 17; the other filter box 41 is positioned in the other cleaning chamber 13, the water pump 5 in the water bath chamber 11 can be pumped into the cleaning manifold 43 by starting the water pump 5, and the water is sprayed out from the filter box 41 in the cleaning chamber 13 through the washing nozzle 45, the filter box 41 can be rotated during cleaning, and when the filter screen 44 is turned over to the top, the water sprayed out from the washing nozzle 45 can be ensured to wash away impurities on the filter screen 44; the waste water generated by cleaning is discharged through a water outlet 16 arranged at the bottom of the cleaning chamber 13; after the filter cartridge 41 is cleaned, the filter cartridge is dried in the cleaning chamber 13, and the lubricating oil is filtered when the lubricating oil enters the filtering chamber 12 next time. According to the filtering device, two filtering boxes 41 are arranged, one filtering box 41 is used for filtering lubricating oil, the other filtering box 41 is used for cleaning, the production and processing process of the lubricating oil is not easy to delay, and the two filtering boxes 41 are convenient and quick to switch; this filter equipment treats filterable lubricating oil through the water-bath heating, can improve the flow property of lubricating oil, glues thick adhesion when avoiding lubricating oil to filter, improves the filter effect.
Claims (7)
1. The utility model provides a lubricating oil production is with filter equipment of clean filter core of being convenient for which characterized in that:
the device comprises a device box body, wherein a water bath chamber is arranged at the top in the device box body, the bottom in the device box body is divided into a filtering chamber and two cleaning chambers by arranging two parallel clapboards, and the two cleaning chambers are arranged along the filtering chamber in a bilateral symmetry manner; the inside of the water bath cavity is filled with hot water, and the top and the bottom of the water bath cavity are respectively provided with a hot water inlet and a hot water outlet;
the oil pipe is arranged in the water bath cavity in a bending mode, the top end of the oil pipe penetrates through the top of the water bath cavity, and the bottom end of the oil pipe penetrates through the bottom of the water bath cavity and is communicated with the filtering cavity;
the filter cleaning device comprises a filter chamber, and is characterized by further comprising two filter cleaning mechanisms, wherein the two filter cleaning mechanisms are arranged along the filter chamber in a bilateral symmetry manner, and each filter cleaning mechanism comprises a filter box, a connecting rod and a cleaning manifold; the top opening of the filter box is arranged, and the bottom of the filter box is provided with a filter screen; one end of the connecting rod is fixedly connected with the filter box, the other end of the connecting rod transversely penetrates through the side wall of the device box body, the connecting rod is movably connected with the side wall of the device box body, and the connecting rod is used for driving the filter box to transversely move and rotate the filter box; the outer side wall of the device box body is fixedly provided with a water pump, a water inlet of the water pump is communicated with the interior of the water bath chamber, a cleaning manifold is arranged in the cleaning chamber, a plurality of flushing nozzles are arranged on the cleaning manifold at intervals, and the cleaning manifold is communicated with a water outlet of the water pump; the bottom of the cleaning chamber is provided with a water outlet;
the two partition plates are respectively provided with a gate opening which is convenient for the filter box to transversely pass through, a sliding groove is arranged in each partition plate, a gate is arranged in each sliding groove, and the gate is used for sealing the gate opening; the gates are internally provided with internal threaded holes extending along the transverse direction, each gate is provided with a screw rod in a matched manner, one end of each screw rod is in threaded connection with the internal threaded hole of the gate, the other end of each screw rod transversely penetrates out of the side wall of the device box body, and the screw rods are rotatably connected with the side wall of the device box body; an oil outlet is formed at the bottom of the filtering chamber;
and hand-operated wheels are arranged at one end of each connecting rod and each screw rod, which is positioned outside the device box body.
2. The filter device of claim 1, wherein the filter element is easy to clean for lubricant production, and the filter device comprises: the device box body comprises a water tank and a filter box, the water tank is arranged at the top of the filter box, and the water tank is fastened and connected with the filter box through a plurality of bolts; the water bath cavity is arranged in the water tank, and the filtering cavity and the two cleaning cavities are arranged in the filter box.
3. The filter device of claim 1, wherein the filter element is easy to clean for lubricant production, and the filter device comprises: the side wall is equipped with the glass window before the device box, is convenient for observe inside filtering chamber and two washing chambers through the glass window.
4. The filter device of claim 1, wherein the filter element is easy to clean for lubricant production, and the filter device comprises: the bottom of the filtering chamber in the device box body is funnel-shaped with an upward opening, and the oil outlet is communicated with the bottom of the funnel.
5. The filter device of claim 1, wherein the filter element is easy to clean for lubricant production, and the filter device comprises: the filtering device also comprises a supporting seat, and the device box body is fixedly arranged at the top end of the supporting seat.
6. The filter device of claim 1, wherein the filter element is easy to clean for lubricant production, and the filter device comprises: and the front side and the rear side of the top end of each filter box are respectively provided with a sliding block parallel to the axis of the connecting rod, and the outer side wall surface of the bottom end of the water bath cavity is provided with a limiting groove corresponding to the sliding block.
7. The filter device of claim 1, wherein the filter element is easy to clean for lubricant production, and the filter device comprises: each connecting rod is provided with a sealing seat, the sealing seats are fixedly arranged on the outer side wall of the device box body, and the connecting rods are in clearance fit with the sealing seats; and each screw rod is provided with a sealing bearing, the sealing bearings are fixedly arranged on the outer side wall of the device box body, and the screw rods are rotatably connected with the sealing bearings.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120066760.8U CN214319388U (en) | 2021-01-12 | 2021-01-12 | Lubricating oil production is with filter equipment of being convenient for clean filter core |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120066760.8U CN214319388U (en) | 2021-01-12 | 2021-01-12 | Lubricating oil production is with filter equipment of being convenient for clean filter core |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN214319388U true CN214319388U (en) | 2021-10-01 |
Family
ID=77905726
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120066760.8U Active CN214319388U (en) | 2021-01-12 | 2021-01-12 | Lubricating oil production is with filter equipment of being convenient for clean filter core |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN214319388U (en) |
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2021
- 2021-01-12 CN CN202120066760.8U patent/CN214319388U/en active Active
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