CN112850853B - Reverse osmosis water purification device - Google Patents
Reverse osmosis water purification device Download PDFInfo
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- CN112850853B CN112850853B CN202110156278.8A CN202110156278A CN112850853B CN 112850853 B CN112850853 B CN 112850853B CN 202110156278 A CN202110156278 A CN 202110156278A CN 112850853 B CN112850853 B CN 112850853B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/44—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis
- C02F1/441—Treatment of water, waste water, or sewage by dialysis, osmosis or reverse osmosis by reverse osmosis
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/08—Apparatus therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D61/00—Processes of separation using semi-permeable membranes, e.g. dialysis, osmosis or ultrafiltration; Apparatus, accessories or auxiliary operations specially adapted therefor
- B01D61/02—Reverse osmosis; Hyperfiltration ; Nanofiltration
- B01D61/10—Accessories; Auxiliary operations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D65/00—Accessories or auxiliary operations, in general, for separation processes or apparatus using semi-permeable membranes
- B01D65/003—Membrane bonding or sealing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A20/00—Water conservation; Efficient water supply; Efficient water use
- Y02A20/124—Water desalination
- Y02A20/131—Reverse-osmosis
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Water Supply & Treatment (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Nanotechnology (AREA)
- Life Sciences & Earth Sciences (AREA)
- Hydrology & Water Resources (AREA)
- Environmental & Geological Engineering (AREA)
- Organic Chemistry (AREA)
- Separation Using Semi-Permeable Membranes (AREA)
Abstract
The embodiment of the invention relates to the technical field of water treatment, and particularly discloses a reverse osmosis water purification device which comprises a water purification tank; the right side of the waist of the water purification tank is provided with a right sealing cover, the left side of the waist of the water purification tank is provided with a left opening cover, and the right end of a reverse osmosis membrane plate which completely extends into the water purification tank through the left opening cover is fixed through a locking mechanism arranged at the bottom of the right sealing cover; and a pressing mechanism for fastening the reverse osmosis membrane plate is further arranged in the water purification tank. The embodiment of the invention can position and support the right end of the reverse osmosis membrane plate extending into the right sealing cover, and can respectively compress and fix two ends of the reverse osmosis membrane plate by using the two first eccentric wheels; under the elastic support effect of first supporting spring, can drive the rectangular block downstream to make spacing ring gear and ring gear groove mesh mutually, reach when not needing the operation handle, guarantee that the drive shaft can not take place rotatory effect, can guarantee hold-down mechanism's stability.
Description
Technical Field
The embodiment of the invention relates to the technical field of water treatment, in particular to a reverse osmosis water purification device.
Background
Present reverse osmosis purifier when filtering the impurity of aquatic, usually only carries out the prefilter through an active carbon filter screen to the effect of getting rid of impurity is not very good.
If in the chinese patent of the publication number CN 212293044U of granting disclose a reverse osmosis purifier, including lower section of thick bamboo, lower section of thick bamboo upper end is through the bolt fastening has a well section of thick bamboo, and well section of thick bamboo upper end is through the bolt fastening has an upper cylinder, and open upper end of the upper cylinder has the water inlet, the equal fixedly connected with bearing plate in the left and right sides of well section of thick bamboo inner wall middle-end, and bearing plate upper end sliding connection has thick active carbon filter screen, thick active carbon filter screen periphery is fixed with sealed frame, and sealed frame right-hand member runs through out a well section of thick bamboo, sealed frame and well section of thick bamboo sliding connection, and sealed frame right-hand member fixedly connected with fixed plate.
If also disclose an intelligent back flush prefilter of RO membrane reverse osmosis water purification machine in the chinese patent of granted publication number CN 210332289U, including the filter body, the connecting pipe is installed to the bottom of filter body, and the scum pipe is installed to the bottom of connecting pipe, is equipped with branch on the inner wall of connecting pipe, installs the lantern ring on the branch, and the lantern ring endotheca has the dwang, and L type pole is installed at the top of dwang, install a plurality of brushes on the L type pole.
The Chinese patent with the publication number of CN 211393957U discloses a high-recovery reverse osmosis water purification treatment system, which comprises a box body, a box door, a frame, a reverse osmosis membrane, a slag discharge port, a flushing mechanism, a scrubbing mechanism and a recovery mechanism, wherein the box door is arranged on the front side of the box body, the frame is fixedly connected to the inner wall of the box body, the reverse osmosis membrane is fixedly connected to the inner wall of the frame, the slag discharge port is formed in the positions, corresponding to the frame, of the left side and the right side of the box body, the flushing mechanism is arranged at the top of the left side of the box body, and the scrubbing mechanism is arranged on the right side of the inner wall of the box body and above the frame.
However, in the reverse osmosis membrane water purification method provided in the above technical solution, the following technical problems still exist: the reverse osmosis filter membrane is also not convenient enough when overhauing the change, is unfavorable for the maintenance, even can change the reverse osmosis filter membrane, the junction when dismantling is because the leakproofness is not good, easily produces and leaks.
To this end, we propose a reverse osmosis water purification device to solve the above problems.
Disclosure of Invention
An object of an embodiment of the present invention is to provide a reverse osmosis water purification apparatus, so as to solve the problems mentioned in the background art. In order to achieve the above purpose, the embodiments of the present invention provide the following technical solutions:
a reverse osmosis water purification device comprises a water purification tank;
the right side of the waist of the water purification tank is provided with a right sealing cover, the left side of the waist of the water purification tank is provided with a left opening cover, and the right end of a reverse osmosis membrane plate which completely extends into the water purification tank through the left opening cover is fixed through a locking mechanism arranged at the bottom of the right sealing cover;
a pressing mechanism for fastening the reverse osmosis membrane plate is also arranged in the water purification tank;
the pressing mechanism comprises two first eccentric wheels, a supporting shaft is coaxially arranged on each first eccentric wheel, the two supporting shafts are respectively rotatably supported in the right sealing cover and the left opening cover, and a toothed ring is arranged on each of the two first eccentric wheels; the pressing mechanism further comprises a driving box fixedly installed in an inner cavity in the upper portion of the purified water tank, a driving shaft is rotatably arranged in an inner cavity in the middle of the driving box, two groups of second eccentric wheels are eccentrically and fixedly arranged on the driving shaft in the driving box, supporting plates are arranged in inner cavities on two sides of the driving box in a supporting and sliding mode, supporting channels are formed in the two supporting plates, and the two second eccentric wheels are respectively arranged in the two supporting channels in a supporting and sliding mode, so that when the driving shaft rotates, the two supporting plates can be driven to synchronously move;
the eccentric directions of the two second eccentric wheels are opposite, so that when the driving shaft rotates, the two supporting plates can be driven to move in opposite directions or away from each other, the two supporting plates are respectively and fixedly connected with the two connecting columns, a supporting cross rod is fixedly arranged on each connecting column, the supporting plates are also fixedly arranged in the water purification tank, the supporting cross rods are arranged on the supporting plates in a penetrating and sliding manner, and racks meshed with the gear rings are arranged on the lower surfaces of the outer ends of the supporting cross rods;
in the embodiment of the invention, when the operation assembly is used, the driving shaft can be driven to rotate, and further the pressing mechanism can be adjusted.
As a further scheme of the embodiment of the invention: the top of the water purifying tank is provided with a water inlet, and sewage to be purified is added into the water purifying tank through the water inlet; the bottom one side of water purification case is provided with the outlet, is provided with the drain valve on the outlet, and the sewage that adds into the water purification incasement through the water inlet carries out filtration purification through the reverse osmosis membrane board, and the water purification that forms enters into the lower part inner chamber of water purification case, and then after opening the drain valve, the water purification accessible outlet is discharged.
As a further scheme of the embodiment of the invention: a side plate of the water purification tank is provided with a vertical cavity positioned below the right sealing cover, the locking mechanism comprises a supporting slide block which is supported and slidably arranged in the vertical cavity through a second supporting spring, a shifting rod is fixedly arranged on one side of the supporting slide block, a strip-shaped channel is arranged on one side of the vertical cavity, and the shifting rod is arranged in the strip-shaped channel in a penetrating and sliding manner; locking mechanical system still including fixed mounting support the last pillar of slider, the bottom of right side sealed cowling seted up with the square passageway that vertical chamber runs through the intercommunication, the pillar runs through to slide to be located in the square passageway, the top of pillar is fixed and is provided with the locking piece.
As a further scheme of the embodiment of the invention: the locking block is of a prismatic block structure with an inclined surface on the left side; the bottom surface of the right end of the reverse osmosis membrane plate is provided with a locking groove matched with the locking block; and a second sealing gasket is also arranged on the inner wall of the top opening of the square channel.
As a further scheme of the embodiment of the invention: and a plurality of groups of supporting rollers for supporting the reverse osmosis membrane plates are uniformly distributed in the water purification tank.
As a further scheme of the embodiment of the invention: the opening of the left open mouth mask is rotatably connected with a switching sealing cover plate, the bottom plate of the left open mouth mask is provided with an adjusting seat, the upper surface of the adjusting seat is fixedly provided with a positioning plate, and the switching sealing cover plate abutted against the positioning plate is fixed through a clamping mechanism arranged on the adjusting seat; and the outer side wall of the positioning plate is provided with a first sealing gasket, and when the switching sealing cover plate is abutted against the outer side wall of the positioning plate and is fixed through the clamping mechanism, a good sealing effect can be achieved.
As a further scheme of the embodiment of the invention: the adjusting cavity is formed in the adjusting seat, the clamping mechanism is arranged in the adjusting cavity through rotation, the clamping mechanism is further arranged in the adjusting cavity through supporting and sliding, a square screw sleeve in the adjusting cavity is arranged, the square screw sleeve is arranged on the adjusting screw rod in a sleeved mode through a threaded connection mode, an operation panel is fixedly arranged at the outer end of the adjusting screw rod, a pressing block is fixedly arranged on the square screw sleeve, therefore, when the switching sealing cover plate is supported on the outer side wall of the positioning plate, the adjusting screw rod is driven to rotate through the operation panel, and then the position of the square screw sleeve in the adjusting cavity can be adjusted according to the rotating direction of the adjusting screw rod, and then the switching sealing cover plate supported on the outer side wall of the positioning plate is driven to be tightly fixed through the pressing block.
As a further scheme of the embodiment of the invention: the adjusting seat is also provided with a positioning groove for positioning the left end of the reverse osmosis membrane plate, and the left end of the reverse osmosis membrane plate which completely extends into the water purifying tank is propped against the positioning groove.
As a further scheme of the embodiment of the invention: the operation subassembly is located including running through rotating a rotatory section of thick bamboo on the water purification case roof, it is provided with the rectangular block to slide through first supporting spring support in the rotatory section of thick bamboo, the fixed operating axis that is provided with on the rectangular block, the fixed handle that is provided with in top of operating axis, consequently, can drive rotatory section of thick bamboo rotation through the operating handle, and then drive the drive shaft rotation.
As a further scheme of the embodiment of the invention: the lower surface of the operating handle facing the top plate of the water purification tank is coaxially provided with a limiting toothed ring, the upper surface of the top plate of the water purification tank is provided with a toothed ring groove matched with the limiting toothed ring, and the rectangular block can be driven to move downwards under the elastic supporting action of the first supporting spring to enable the limiting toothed ring to be meshed with the toothed ring groove, so that the effect of ensuring that the driving shaft cannot rotate when the operating handle is not required to be operated is achieved.
As a further scheme of the embodiment of the invention: a drain hole is formed in the bottom plate of the driving box, so that water accumulation in the driving box is avoided.
Compared with the prior art, the embodiment of the invention has the beneficial effects that: after the reverse osmosis membrane plate is pushed into the water purifying tank, the reverse osmosis membrane plate can be guided and supported by the aid of the support roller, when the reverse osmosis membrane plate continues to move rightwards in the water purifying tank, the right end of the reverse osmosis membrane plate can stretch into the right sealing cover, the right end of the reverse osmosis membrane plate is firstly abutted to the inclined surface of the locking block, the locking block can be retracted into the square channel, the locking block can be embedded into the locking groove under the action of elastic restoring force of a second support spring until the locking block is aligned with the locking groove, the right end of the reverse osmosis membrane plate stretching into the right sealing cover is positioned and supported, the step at the joint between the support post and the locking block is abutted to the second sealing pad under the action of the elastic support of the second support spring, and a sealing effect is achieved;
when the driving shaft rotates, the two supporting plates can be driven to move towards each other or away from each other, and then the supporting cross rod is driven to move in the horizontal direction, so that when the supporting cross rod moves in the horizontal direction, the first eccentric wheels can be driven to rotate by a certain angle, and then the two first eccentric wheels can be used for respectively compressing and fixing the two ends of the reverse osmosis membrane plate; under the elastic supporting action of the first supporting spring, the rectangular block can be driven to move downwards to enable the limiting toothed ring to be meshed with the toothed ring groove, and the effect of ensuring that the driving shaft cannot rotate when the operation handle is not required to be operated is achieved.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention.
Fig. 1 is a schematic structural diagram of a reverse osmosis water purification device provided in an embodiment of the present invention.
Fig. 2 is a partial perspective view of an operating assembly of a reverse osmosis water purification apparatus according to an embodiment of the present invention.
Fig. 3 is an internal structure view of a driving box in a reverse osmosis water purifying device according to an embodiment of the present invention.
Fig. 4 is a partial perspective view of a swing module in a reverse osmosis water purification apparatus according to an embodiment of the present invention.
Fig. 5 is an enlarged schematic view of a portion a of fig. 1.
Fig. 6 is an enlarged schematic view of a portion B in fig. 1.
In the figure: 1-a clean water tank, 2-a water inlet, 3-a reverse osmosis membrane plate, 4-a water outlet, 5-a water discharge valve, 6-a right sealing cover, 7-a left opening cover, 8-a switching sealing cover plate, 9-a support plate, 10-a support roller, 11-a rotary drum, 12-a support cross bar, 13-a first eccentric wheel, 14-a support shaft, 15-a rack, 16-a toothed ring, 17-a drive box, 18-a rectangular block, 19-a toothed ring groove, 20-a limiting toothed ring, 21-an operating handle, 22-an operating shaft, 23-a first support spring, 24-a drive shaft, 25-a support plate, 26-a support channel, 27-a water discharge hole, 28-a connection column, 29-a second eccentric wheel, 30-a positioning plate, 31-a positioning groove, 32-a first sealing gasket, 33-a pressing block, 34-an adjusting cavity, 35-a square threaded sleeve, 36-an operating panel, 37-an adjusting screw rod, 38-an adjusting seat, 39-a vertical cavity, 40-a second supporting spring, 41-a strip-shaped channel, 42-a deflector rod, 43-a supporting slide block, 44-a support column, 45-a locking groove, 46-a second sealing gasket, 47-a square channel and 48-a locking block.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects to be solved by the present invention more clearly apparent, the present invention is further described in 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 invention and are not intended to limit the invention.
Example 1
As shown in fig. 1, in a preferred embodiment of the present invention, a reverse osmosis water purification device comprises a purified water tank 1, a right sealing cover 6 is arranged on the right side of the waist of the purified water tank 1, a left open cover 7 is arranged on the left side of the waist of the purified water tank 1, and the right end of a reverse osmosis membrane plate 3 which completely extends into the purified water tank 1 through the left open cover 7 is fixed through a locking mechanism arranged at the bottom of the right sealing cover 6; and a pressing mechanism for fastening the reverse osmosis membrane plate 3 is also arranged in the water purification tank 1.
Further, a water inlet 2 is arranged at the top of the water purification tank 1, and sewage to be purified is added into the water purification tank 1 through the water inlet 2; bottom one side of water purification case 1 is provided with outlet 4, is provided with drain valve 5 on outlet 4, and the sewage of adding in water purification case 1 through water inlet 2 carries out filtration purification back through reverse osmosis membrane board 3, and the water purification of formation enters into the lower part inner chamber of water purification case 1, and then after opening drain valve 5, water purification accessible outlet 4 is discharged.
Specifically, as shown in fig. 1 and 6, in a preferred embodiment provided by the present invention, a vertical cavity 39 located below the right sealing cover 6 is formed on a side plate of the purified water tank 1, the locking mechanism includes a support slider 43 slidably disposed in the vertical cavity 39 and supported by a second support spring 40, a shift lever 42 is fixedly mounted on one side of the support slider 43, a strip-shaped channel 41 is formed on one side of the vertical cavity 39, and the shift lever 42 is slidably disposed in the strip-shaped channel 41; the locking mechanism further comprises a support column 44 fixedly mounted on the support sliding block 43, a square channel 47 communicated with the vertical cavity 39 in a penetrating manner is formed in the bottom of the right sealing cover 6, the support column 44 is arranged in the square channel 47 in a penetrating and sliding manner, a locking block 48 is fixedly arranged at the top of the support column 44, and the locking block 48 is of a prism block structure with an inclined surface on the left side; the bottom surface of the right end of the reverse osmosis membrane plate 3 is provided with a locking groove 45 matched with the locking block 48; and a second sealing gasket 46 is also arranged on the inner wall of the top opening of the square channel 47.
Furthermore, in the embodiment of the invention, a plurality of groups of supporting rollers 10 which support the reverse osmosis membrane plates 3 are uniformly distributed in the water purifying tank 1; it can be understood that in the specific implementation of the locking mechanism provided in the embodiment of the present invention, after the reverse osmosis membrane 3 is pushed into the purified water tank 1, the supporting roller 10 is provided to provide a guiding and supporting function for the reverse osmosis membrane 3, when the reverse osmosis membrane 3 continues to move rightward in the purified water tank 1, the right end of the reverse osmosis membrane 3 can be extended into the right sealing cover 6, and then the right end of the reverse osmosis membrane 3 first abuts against the inclined surface of the locking block 48, so that the locking block 48 can be retracted into the square channel 47, until the locking block 48 is aligned with the locking groove 45, the locking block 48 can be inserted into the locking groove 45 under the elastic restoring force of the second supporting spring 40, so as to position and support the right end of the reverse osmosis membrane 3 extending into the right sealing cover 6, and under the elastic supporting function of the second supporting spring 40, the step at the connection between the support column 44 and the locking block 48 can abut against the second sealing gasket 46, thereby achieving the sealing effect.
Example 2
As shown in fig. 1, in a preferred embodiment of the present invention, a reverse osmosis water purification device comprises a purified water tank 1, a right sealing cover 6 is arranged on the right side of the waist of the purified water tank 1, a left open cover 7 is arranged on the left side of the waist of the purified water tank 1, and the right end of a reverse osmosis membrane plate 3 which completely extends into the purified water tank 1 through the left open cover 7 is fixed through a locking mechanism arranged at the bottom of the right sealing cover 6; and a pressing mechanism for fastening the reverse osmosis membrane plate 3 is also arranged in the water purification tank 1.
Further, a water inlet 2 is arranged at the top of the water purification tank 1, and sewage to be purified is added into the water purification tank 1 through the water inlet 2; bottom one side of water purification case 1 is provided with outlet 4, is provided with drain valve 5 on outlet 4, and the sewage of adding in water purification case 1 through water inlet 2 carries out filtration purification back through reverse osmosis membrane board 3, and the water purification of formation enters into the lower part inner chamber of water purification case 1, and then after opening drain valve 5, water purification accessible outlet 4 discharges.
Specifically, as shown in fig. 1 and 6, in a preferred embodiment of the present invention, a vertical cavity 39 located below the right sealing cover 6 is formed in a side plate of the purified water tank 1, the locking mechanism includes a supporting slider 43 slidably disposed in the vertical cavity 39 and supported by a second supporting spring 40, a shift lever 42 is fixedly mounted on one side of the supporting slider 43, a strip channel 41 is formed on one side of the vertical cavity 39, and the shift lever 42 is slidably disposed in the strip channel 41; the locking mechanism further comprises a support column 44 fixedly mounted on the support sliding block 43, a square channel 47 communicated with the vertical cavity 39 in a penetrating manner is formed in the bottom of the right sealing cover 6, the support column 44 is arranged in the square channel 47 in a penetrating and sliding manner, a locking block 48 is fixedly arranged at the top of the support column 44, and the locking block 48 is of a prism block structure with an inclined surface on the left side; the bottom surface of the right end of the reverse osmosis membrane plate 3 is provided with a locking groove 45 matched with the locking block 48; and a second sealing gasket 46 is also arranged on the inner wall of the top opening of the square channel 47.
Furthermore, in the embodiment of the invention, a plurality of groups of supporting rollers 10 which support the reverse osmosis membrane plates 3 are uniformly distributed in the water purifying tank 1; it can be understood that in the specific implementation of the locking mechanism provided in the embodiment of the present invention, after the reverse osmosis membrane 3 is pushed into the purified water tank 1, the supporting roller 10 is provided to provide a guiding and supporting function for the reverse osmosis membrane 3, when the reverse osmosis membrane 3 continues to move rightward in the purified water tank 1, the right end of the reverse osmosis membrane 3 can be extended into the right sealing cover 6, and then the right end of the reverse osmosis membrane 3 first abuts against the inclined surface of the locking block 48, so that the locking block 48 can be retracted into the square channel 47, until the locking block 48 is aligned with the locking groove 45, the locking block 48 can be inserted into the locking groove 45 under the elastic restoring force of the second supporting spring 40, so as to position and support the right end of the reverse osmosis membrane 3 extending into the right sealing cover 6, and under the elastic supporting function of the second supporting spring 40, the step at the connection between the support column 44 and the locking block 48 can abut against the second sealing gasket 46, thereby achieving the sealing effect.
Further, as shown in fig. 1 and fig. 5, in a preferred embodiment of the present invention, an adapter sealing cover plate 8 is rotatably connected to an opening of the left open cover 7, an adjusting seat 38 is disposed on a bottom plate of the left open cover 7, a positioning plate 30 is fixedly disposed on an upper surface of the adjusting seat 38, and the adapter sealing cover plate 8 abutting against the positioning plate 30 is fixed by a clamping mechanism disposed on the adjusting seat 38; and the outer side wall of the positioning plate 30 is provided with a first sealing gasket 32, when the adapter sealing cover plate 8 is abutted against the outer side wall of the positioning plate 30 and is fixed through a clamping mechanism, a good sealing effect can be achieved.
Furthermore, in the preferred embodiment of the present invention, the adjusting seat 38 is provided with an adjusting cavity 34, the clamping mechanism comprises an adjusting screw rod 37 which is rotatably arranged in the adjusting cavity 34, and also comprises a square threaded sleeve 35 which is supported and slidably arranged in the adjusting cavity 34, the square threaded sleeve 35 is sleeved on the adjusting screw rod 37 in a threaded connection manner, the outer end of the adjusting screw rod 37 is fixedly provided with an operating panel 36, the square threaded sleeve 35 is fixedly provided with a pressing block 33, therefore, when the switching sealing cover plate 8 is pressed against the outer side wall of the positioning plate 30, the adjusting screw rod 37 is driven to rotate by operating the operating plate 36, further, the position of the square thread sleeve 35 in the adjusting cavity 34 can be adjusted according to the rotating direction of the adjusting screw rod 37, and then drives the pressing block 33 to clamp and fix the adapting sealing cover plate 8 abutting against the outer side wall of the positioning plate 30.
Referring to fig. 1 and 5, in the embodiment of the present invention, the adjusting base 38 is further provided with a positioning groove 31 for positioning the left end of the reverse osmosis membrane 3, wherein the left end of the reverse osmosis membrane 3 completely extending into the purified water tank 1 abuts against the positioning groove 31.
Example 3
As shown in fig. 1, in a preferred embodiment of the present invention, a reverse osmosis water purification device comprises a purified water tank 1, a right sealing cover 6 is arranged on the right side of the waist of the purified water tank 1, a left open cover 7 is arranged on the left side of the waist of the purified water tank 1, and the right end of a reverse osmosis membrane plate 3 which completely extends into the purified water tank 1 through the left open cover 7 is fixed through a locking mechanism arranged at the bottom of the right sealing cover 6; and a pressing mechanism for fastening the reverse osmosis membrane plate 3 is also arranged in the water purification tank 1.
Further, a water inlet 2 is arranged at the top of the water purification tank 1, and sewage to be purified is added into the water purification tank 1 through the water inlet 2; bottom one side of water purification case 1 is provided with outlet 4, is provided with drain valve 5 on outlet 4, and the sewage of adding in water purification case 1 through water inlet 2 carries out filtration purification back through reverse osmosis membrane board 3, and the water purification of formation enters into the lower part inner chamber of water purification case 1, and then after opening drain valve 5, water purification accessible outlet 4 is discharged.
Specifically, as shown in fig. 1 and 6, in a preferred embodiment of the present invention, a vertical cavity 39 located below the right sealing cover 6 is formed in a side plate of the purified water tank 1, the locking mechanism includes a supporting slider 43 slidably disposed in the vertical cavity 39 and supported by a second supporting spring 40, a shift lever 42 is fixedly mounted on one side of the supporting slider 43, a strip channel 41 is formed on one side of the vertical cavity 39, and the shift lever 42 is slidably disposed in the strip channel 41; the locking mechanism further comprises a support column 44 fixedly mounted on the support sliding block 43, a square channel 47 communicated with the vertical cavity 39 in a penetrating manner is formed in the bottom of the right sealing cover 6, the support column 44 is arranged in the square channel 47 in a penetrating and sliding manner, a locking block 48 is fixedly arranged at the top of the support column 44, and the locking block 48 is of a prism block structure with an inclined surface on the left side; the bottom surface of the right end of the reverse osmosis membrane plate 3 is provided with a locking groove 45 matched with the locking block 48; and a second sealing gasket 46 is also arranged on the inner wall of the top opening of the square channel 47.
Furthermore, in the embodiment of the invention, a plurality of groups of supporting rollers 10 which support the reverse osmosis membrane plates 3 are uniformly distributed in the water purifying tank 1; it can be understood that in the specific implementation of the locking mechanism provided by the embodiment of the present invention, after the reverse osmosis membrane 3 is pushed into the purified water tank 1, the support roller 10 is provided to play a guiding support role for the reverse osmosis membrane 3, when the reverse osmosis membrane 3 continues to move to the right in the purified water tank 1, the right end of the reverse osmosis membrane 3 can be extended into the right sealing cover 6, and then the right end of the reverse osmosis membrane 3 first abuts against the inclined surface of the locking block 48, so that the locking block 48 can be retracted into the square passage 47, until the locking block 48 is aligned with the locking groove 45, under the elastic restoring force of the second support spring 40, the locking block 48 can be inserted into the locking groove 45, so as to position and support the right end of the reverse osmosis membrane 3 extended into the right sealing cover 6, and under the elastic supporting effect of the second support spring 40, the step at the connection between the support post 44 and the locking block 48 can abut against the second sealing gasket 46, thereby achieving the sealing effect.
Further, as shown in fig. 1 and fig. 5, in a preferred embodiment of the present invention, an adapter sealing cover plate 8 is rotatably connected to an opening of the left open cover 7, an adjusting seat 38 is disposed on a bottom plate of the left open cover 7, a positioning plate 30 is fixedly disposed on an upper surface of the adjusting seat 38, and the adapter sealing cover plate 8 abutting against the positioning plate 30 is fixed by a clamping mechanism disposed on the adjusting seat 38; and the outer side wall of the positioning plate 30 is provided with a first sealing gasket 32, when the adapter sealing cover plate 8 is abutted against the outer side wall of the positioning plate 30 and is fixed through a clamping mechanism, a good sealing effect can be achieved.
Furthermore, in the preferred embodiment provided by the present invention, the adjusting seat 38 is provided with an adjusting cavity 34, the clamping mechanism comprises an adjusting screw rod 37 which is rotatably arranged in the adjusting cavity 34, and also comprises a square threaded sleeve 35 which is supported and slidably arranged in the adjusting cavity 34, the square threaded sleeve 35 is sleeved on the adjusting screw rod 37 in a threaded connection mode, an operating panel 36 is fixedly arranged at the outer end of the adjusting screw rod 37, and the pressing block 33 is fixedly arranged on the square threaded sleeve 35, so that, when the switching sealing cover plate 8 is abutted against the outer side wall of the positioning plate 30, the adjusting screw rod 37 is driven to rotate by operating the operating plate 36, further, the position of the square thread sleeve 35 in the adjusting cavity 34 can be adjusted according to the rotating direction of the adjusting screw rod 37, and then drives the pressing block 33 to clamp and fix the adapting sealing cover plate 8 abutting against the outer side wall of the positioning plate 30.
Referring to fig. 1 and 5, in the embodiment of the present invention, the adjusting seat 38 further has a positioning groove 31 for positioning the left end of the reverse osmosis membrane 3, wherein the left end of the reverse osmosis membrane 3 completely extending into the purified water tank 1 abuts against the positioning groove 31.
As shown in fig. 1, fig. 3 and fig. 4, in a preferred embodiment provided by the present invention, the pressing mechanism includes two first eccentric wheels 13, a supporting shaft 14 is coaxially disposed on the first eccentric wheels 13, the two supporting shafts 14 are respectively rotatably supported in the right sealing cover 6 and the left open cover 7, and a toothed ring 16 is disposed on each of the two first eccentric wheels 13; the compressing mechanism further comprises a driving box 17 fixedly installed in an upper inner cavity of the purified water tank 1, a driving shaft 24 is rotatably arranged in the middle inner cavity of the driving box 17, two groups of second eccentric wheels 29 are eccentrically and fixedly arranged on the driving shaft 24 in the driving box 17, supporting plates 25 are arranged in inner cavities on two sides of the driving box 17 in a supporting and sliding manner, supporting channels 26 are arranged on the two supporting plates 25, and the two second eccentric wheels 29 are respectively arranged in the two supporting channels 26 in a supporting and sliding manner, so that when the driving shaft 24 rotates, the two supporting plates 25 can be driven to synchronously move;
preferably, in the embodiment of the present invention, the eccentric directions of the two second eccentric wheels 29 are opposite, so that when the driving shaft 24 rotates, the two supporting plates 25 can be driven to move toward or away from each other, the two supporting plates 25 are respectively fixedly connected to the two connecting posts 28, a supporting cross bar 12 is fixedly mounted on each connecting post 28, a supporting plate 9 is further fixedly disposed in the clean water tank 1, the supporting cross bar 12 is slidably disposed on the supporting plate 9 in a penetrating manner, and a rack 15 engaged with the toothed ring 16 is disposed on a lower surface of an outer end of the supporting cross bar 12, so that when the supporting cross bar 12 moves in the horizontal direction, the first eccentric wheel 13 can be driven to rotate by a certain angle, and then the two first eccentric wheels 13 can be used to respectively compress and fix two ends of the reverse osmosis membrane 3.
Further, in the embodiment of the present invention, a bottom plate of the driving box 17 is provided with a drainage hole 27 to prevent water from accumulating in the driving box 17.
Example 4
As shown in fig. 1, in a preferred embodiment of the present invention, a reverse osmosis water purification device comprises a purified water tank 1, a right sealing cover 6 is arranged at the right side of the waist of the purified water tank 1, a left open cover 7 is arranged at the left side of the waist of the purified water tank 1, and the right end of a reverse osmosis membrane 3 which completely extends into the purified water tank 1 through the left open cover 7 is fixed through a locking mechanism arranged at the bottom of the right sealing cover 6; and a pressing mechanism for fastening the reverse osmosis membrane plate 3 is also arranged in the water purification tank 1.
Further, a water inlet 2 is arranged at the top of the water purification tank 1, and sewage to be purified is added into the water purification tank 1 through the water inlet 2; bottom one side of water purification case 1 is provided with outlet 4, is provided with drain valve 5 on outlet 4, and the sewage of adding in water purification case 1 through water inlet 2 carries out filtration purification back through reverse osmosis membrane board 3, and the water purification of formation enters into the lower part inner chamber of water purification case 1, and then after opening drain valve 5, water purification accessible outlet 4 discharges.
Specifically, as shown in fig. 1 and 6, in a preferred embodiment of the present invention, a vertical cavity 39 located below the right sealing cover 6 is formed in a side plate of the purified water tank 1, the locking mechanism includes a supporting slider 43 slidably disposed in the vertical cavity 39 and supported by a second supporting spring 40, a shift lever 42 is fixedly mounted on one side of the supporting slider 43, a strip channel 41 is formed on one side of the vertical cavity 39, and the shift lever 42 is slidably disposed in the strip channel 41; the locking mechanism further comprises a support column 44 fixedly mounted on the support sliding block 43, a square channel 47 communicated with the vertical cavity 39 in a penetrating manner is formed in the bottom of the right sealing cover 6, the support column 44 is arranged in the square channel 47 in a penetrating and sliding manner, a locking block 48 is fixedly arranged at the top of the support column 44, and the locking block 48 is of a prism block structure with an inclined surface on the left side; the bottom surface of the right end of the reverse osmosis membrane plate 3 is provided with a locking groove 45 matched with the locking block 48; and a second sealing gasket 46 is also arranged on the inner wall of the top opening of the square channel 47.
Furthermore, in the embodiment of the invention, a plurality of groups of supporting rollers 10 which support the reverse osmosis membrane plates 3 are uniformly distributed in the water purifying tank 1; it can be understood that in the specific implementation of the locking mechanism provided in the embodiment of the present invention, after the reverse osmosis membrane 3 is pushed into the purified water tank 1, the supporting roller 10 is provided to provide a guiding and supporting function for the reverse osmosis membrane 3, when the reverse osmosis membrane 3 continues to move rightward in the purified water tank 1, the right end of the reverse osmosis membrane 3 can be extended into the right sealing cover 6, and then the right end of the reverse osmosis membrane 3 first abuts against the inclined surface of the locking block 48, so that the locking block 48 can be retracted into the square channel 47, until the locking block 48 is aligned with the locking groove 45, the locking block 48 can be inserted into the locking groove 45 under the elastic restoring force of the second supporting spring 40, so as to position and support the right end of the reverse osmosis membrane 3 extending into the right sealing cover 6, and under the elastic supporting function of the second supporting spring 40, the step at the connection between the support column 44 and the locking block 48 can abut against the second sealing gasket 46, thereby achieving the sealing effect.
Further, as shown in fig. 1 and fig. 5, in a preferred embodiment provided by the present invention, a switching sealing cover plate 8 is rotatably connected to an opening of the left open cover 7, an adjusting seat 38 is disposed on a bottom plate of the left open cover 7, a positioning plate 30 is fixedly disposed on an upper surface of the adjusting seat 38, and the switching sealing cover plate 8 abutting against the positioning plate 30 is fixed by a clamping mechanism disposed on the adjusting seat 38; and the outer side wall of the positioning plate 30 is provided with a first sealing gasket 32, when the adapter sealing cover plate 8 is abutted against the outer side wall of the positioning plate 30 and is fixed through a clamping mechanism, a good sealing effect can be achieved.
Furthermore, in the preferred embodiment of the present invention, the adjusting seat 38 is provided with an adjusting cavity 34, the clamping mechanism comprises an adjusting screw rod 37 which is rotatably arranged in the adjusting cavity 34, and also comprises a square threaded sleeve 35 which is supported and slidably arranged in the adjusting cavity 34, the square threaded sleeve 35 is sleeved on the adjusting screw rod 37 in a threaded connection manner, the outer end of the adjusting screw rod 37 is fixedly provided with an operating panel 36, the square threaded sleeve 35 is fixedly provided with a pressing block 33, therefore, when the switching sealing cover plate 8 is abutted against the outer side wall of the positioning plate 30, the adjusting screw rod 37 is driven to rotate by operating the operating plate 36, further, the position of the square thread sleeve 35 in the adjusting cavity 34 can be adjusted according to the rotating direction of the adjusting screw rod 37, and then drives the pressing block 33 to clamp and fix the adapting sealing cover plate 8 abutting against the outer side wall of the positioning plate 30.
Referring to fig. 1 and 5, in the embodiment of the present invention, the adjusting seat 38 further has a positioning groove 31 for positioning the left end of the reverse osmosis membrane 3, wherein the left end of the reverse osmosis membrane 3 completely extending into the purified water tank 1 abuts against the positioning groove 31.
As shown in fig. 1, 3 and 4, in a preferred embodiment of the present invention, the pressing mechanism includes two first eccentric wheels 13, a supporting shaft 14 is coaxially disposed on the first eccentric wheels 13, the two supporting shafts 14 are respectively rotatably supported in the right sealing cover 6 and the left open cover 7, and a toothed ring 16 is disposed on each of the two first eccentric wheels 13; the compressing mechanism further comprises a driving box 17 fixedly installed in an upper inner cavity of the purified water tank 1, a driving shaft 24 is rotatably arranged in the middle inner cavity of the driving box 17, two groups of second eccentric wheels 29 are eccentrically and fixedly arranged on the driving shaft 24 in the driving box 17, supporting plates 25 are arranged in inner cavities on two sides of the driving box 17 in a supporting and sliding manner, supporting channels 26 are arranged on the two supporting plates 25, and the two second eccentric wheels 29 are respectively arranged in the two supporting channels 26 in a supporting and sliding manner, so that when the driving shaft 24 rotates, the two supporting plates 25 can be driven to synchronously move;
preferably, in the embodiment of the present invention, the two second eccentric wheels 29 have opposite eccentric directions, so that when the driving shaft 24 rotates, the two supporting plates 25 can be driven to move toward or away from each other, the two supporting plates 25 are respectively fixedly connected to two connecting columns 28, a supporting cross rod 12 is fixedly mounted on each connecting column 28, a supporting plate 9 is further fixedly disposed in the clean water tank 1, the supporting cross rod 12 is slidably disposed on the supporting plate 9 in a penetrating manner, and a rack 15 engaged with the toothed ring 16 is disposed on a lower surface of an outer end of the supporting cross rod 12, so that when the supporting cross rod 12 moves in a horizontal direction, the first eccentric wheel 13 can be driven to rotate by a certain angle, and then the two first eccentric wheels 13 can be used to respectively press and fix two ends of the reverse osmosis membrane 3.
Further, in the embodiment of the present invention, a bottom plate of the driving box 17 is provided with a drainage hole 27 to prevent water from accumulating in the driving box 17.
As shown in fig. 1-2, in the embodiment of the present invention, an operating component coaxially connected to the driving shaft 24 is disposed on the top plate of the purified water tank 1, and in the embodiment of the present invention, when the operating component is used, the driving shaft 24 can be driven to rotate, so that the pressing mechanism can be adjusted.
Specifically, in the preferred embodiment of the present invention, the operating assembly includes a rotating cylinder 11 rotatably penetrating a top plate of the water purifying tank 1, a rectangular block 18 is slidably supported in the rotating cylinder 11 through a first supporting spring 23, an operating shaft 22 is fixedly disposed on the rectangular block 18, and an operating handle 21 is fixedly disposed at a top end of the operating shaft 22, so that the rotating cylinder 11 can be driven to rotate by operating the operating handle 21, and further, the driving shaft 24 can be driven to rotate.
Furthermore, in the embodiment of the present invention, a limiting toothed ring 20 is coaxially disposed on a lower surface of an operating handle 21 facing a top plate of the purified water tank 1, a toothed ring groove 19 adapted to the limiting toothed ring 20 is disposed on an upper surface of the top plate of the purified water tank 1, and under the elastic supporting action of a first supporting spring 23, the rectangular block 18 can be driven to move downward to enable the limiting toothed ring 20 to be engaged with the toothed ring groove 19, so that an effect of ensuring that the driving shaft 24 does not rotate when the operating handle 21 is not required to be operated is achieved, therefore, after the operating assembly is used for adjusting the pressing mechanism, the embodiment of the present invention can ensure the stability of the pressing mechanism, thereby ensuring the fastening effect on the reverse osmosis membrane 3.
In the description of the present invention, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (1)
1. A reverse osmosis water purification device, which is characterized by comprising a water purification tank (1);
a right sealing cover (6) is arranged on the right side of the waist of the water purifying tank (1), a left open cover (7) is arranged on the left side of the waist of the water purifying tank (1), and the right end of a reverse osmosis membrane plate (3) which completely extends into the water purifying tank (1) through the left open cover (7) is fixed through a locking mechanism arranged at the bottom of the right sealing cover (6);
a pressing mechanism for fastening the reverse osmosis membrane plate (3) is also arranged in the water purifying tank (1);
the pressing mechanism comprises two first eccentric wheels (13), supporting shafts (14) are coaxially arranged on the first eccentric wheels (13), the two supporting shafts (14) are respectively rotatably supported in the right sealing cover (6) and the left open cover (7), and gear rings (16) are arranged on the two first eccentric wheels (13); the compressing mechanism further comprises a driving box (17) fixedly installed in an inner cavity at the upper part of the water purifying box (1), a driving shaft (24) is rotatably arranged in an inner cavity at the middle part of the driving box (17), two groups of second eccentric wheels (29) are eccentrically and fixedly arranged on the driving shaft (24) positioned in the driving box (17), supporting plates (25) are respectively arranged in inner cavities at two sides of the driving box (17) in a supporting and sliding manner, supporting channels (26) are respectively arranged on the two supporting plates (25), and the two second eccentric wheels (29) are respectively arranged in the two supporting channels (26) in a supporting and sliding manner;
the eccentric directions of the two second eccentric wheels (29) are opposite, the two supporting plates (25) are respectively and fixedly connected with the two connecting columns (28), each connecting column (28) is fixedly provided with a supporting cross rod (12), a supporting plate (9) is further fixedly arranged in the water purifying tank (1), the supporting cross rods (12) are arranged on the supporting plates (9) in a penetrating and sliding mode, and the lower surfaces of the outer ends of the supporting cross rods (12) are provided with racks (15) which are meshed with the gear rings (16);
an operating component coaxially connected with the driving shaft (24) is arranged on the top plate of the water purifying tank (1);
the top of the water purifying tank (1) is provided with a water inlet (2); a water outlet (4) is formed in one side of the bottom of the water purifying tank (1);
a vertical cavity (39) located below the right sealing cover (6) is formed in a side plate of the water purifying tank (1), the locking mechanism comprises a supporting sliding block (43) which is supported by a second supporting spring (40) and slidably arranged in the vertical cavity (39), a shifting rod (42) is fixedly mounted on one side of the supporting sliding block (43), a strip-shaped channel (41) is formed in one side of the vertical cavity (39), and the shifting rod (42) is penetratingly slidably arranged in the strip-shaped channel (41); the locking mechanism further comprises a support column (44) fixedly mounted on the support sliding block (43), a square channel (47) communicated with the vertical cavity (39) in a penetrating mode is formed in the bottom of the right sealing cover (6), the support column (44) is arranged in the square channel (47) in a penetrating and sliding mode, and a locking block (48) is fixedly arranged on the top of the support column (44);
the locking block (48) is of a prismatic block structure with an inclined surface on the left side; the bottom surface of the right end of the reverse osmosis membrane plate (3) is provided with a locking groove (45) matched with the locking block (48); a second sealing gasket (46) is further arranged on the inner wall of the top opening of the square channel (47);
a plurality of pairs of supporting rollers (10) which play a supporting role for the reverse osmosis membrane plates (3) are uniformly distributed in the water purifying tank (1);
a switching sealing cover plate (8) is rotatably connected to an opening of the left open mouth mask (7), an adjusting seat (38) is arranged on a bottom plate of the left open mouth mask (7), a positioning plate (30) is fixedly arranged on the upper surface of the adjusting seat (38), and the switching sealing cover plate (8) abutted against the positioning plate (30) is fixed through a clamping mechanism arranged on the adjusting seat (38); the outer side wall of the positioning plate (30) is provided with a first sealing gasket (32);
an adjusting cavity (34) is formed in the adjusting seat (38), the clamping mechanism comprises an adjusting screw rod (37) rotatably arranged in the adjusting cavity (34), the clamping mechanism further comprises a square threaded sleeve (35) which is slidably arranged in the adjusting cavity (34) in a supporting mode, the square threaded sleeve (35) is sleeved on the adjusting screw rod (37) in a threaded connection mode, an operating disc (36) is fixedly arranged at the outer end of the adjusting screw rod (37), and a pressing block (33) is fixedly arranged on the square threaded sleeve (35);
the adjusting seat (38) is also provided with a positioning groove (31) for positioning the left end of the reverse osmosis membrane plate (3), wherein the left end of the reverse osmosis membrane plate (3) which completely extends into the purified water tank (1) is propped against the positioning groove (31);
the operation assembly comprises a rotary cylinder (11) which is arranged on a top plate of the water purification tank (1) in a penetrating and rotating mode, a rectangular block (18) is arranged in the rotary cylinder (11) in a supporting and sliding mode through a first supporting spring (23), an operation shaft (22) is fixedly arranged on the rectangular block (18), and an operation handle (21) is fixedly arranged at the top end of the operation shaft (22);
orientation the coaxial spacing ring gear (20) that is provided with of operating handle (21) lower surface of water purification case (1) roof, the roof upper surface of water purification case (1) seted up with ring gear (19) of spacing ring gear (20) looks adaptation, and under the elastic support effect of first supporting spring (23), can drive rectangular block (18) downstream to make spacing ring gear (20) mesh with ring gear (19) mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156278.8A CN112850853B (en) | 2021-02-04 | 2021-02-04 | Reverse osmosis water purification device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110156278.8A CN112850853B (en) | 2021-02-04 | 2021-02-04 | Reverse osmosis water purification device |
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| Publication Number | Publication Date |
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| CN112850853A CN112850853A (en) | 2021-05-28 |
| CN112850853B true CN112850853B (en) | 2022-08-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101328950A (en) * | 2007-06-18 | 2008-12-24 | 上海高罗输送装备有限公司 | Hold-down mechanism for conveyer band button sewer |
| CN203777796U (en) * | 2013-09-29 | 2014-08-20 | 四川高精净化设备有限公司 | Movable plate-frame oil purifier with eccentric wheel compression device |
| CN104037541A (en) * | 2014-07-03 | 2014-09-10 | 上海航天科工电器研究院有限公司 | Connector with quick unlocking structure |
| CN212039875U (en) * | 2020-03-02 | 2020-12-01 | 重庆海通环保科技有限公司 | Reverse osmosis membrane visor convenient to it is fixed |
| CN212217845U (en) * | 2020-05-24 | 2020-12-25 | 合肥德拓自动化设备有限公司 | Multifunctional adjustable tool clamp |
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Inventor after: Guo Gongbing Inventor after: Ding Chunhong Inventor after: Duan Fei Inventor before: Guo Gongbing Inventor before: Ding Chunhong Inventor before: Duan Fei |