CN215592772U - Concrete wastewater treatment device - Google Patents
Concrete wastewater treatment device Download PDFInfo
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- CN215592772U CN215592772U CN202023234197.5U CN202023234197U CN215592772U CN 215592772 U CN215592772 U CN 215592772U CN 202023234197 U CN202023234197 U CN 202023234197U CN 215592772 U CN215592772 U CN 215592772U
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- fixedly connected
- filter
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- sliding
- tank
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- 238000004065 wastewater treatment Methods 0.000 title claims abstract description 19
- 238000001914 filtration Methods 0.000 claims abstract description 23
- 230000000694 effects Effects 0.000 claims abstract description 5
- 238000003756 stirring Methods 0.000 claims description 31
- 239000002351 wastewater Substances 0.000 abstract description 21
- 230000009286 beneficial effect Effects 0.000 abstract description 2
- 239000000463 material Substances 0.000 abstract description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 16
- 239000002994 raw material Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 238000006386 neutralization reaction Methods 0.000 description 3
- 239000012535 impurity Substances 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 210000004243 sweat Anatomy 0.000 description 2
- 238000010170 biological method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010030 laminating Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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Abstract
The utility model discloses a concrete wastewater treatment device, which adopts the technical scheme that: comprises a filter tank, wherein a filter mechanism is arranged in the filter tank; filtering mechanism includes the cover, first spacing groove has been seted up to the cover bottom, filter tank top and locate first spacing inslot portion and cup joint with the cover activity, cover bottom fixedly connected with is fixed cover, fixed cover bottom has been seted up first sliding tray, first sliding tray inside is equipped with the sliding sleeve, sliding sleeve top fixedly connected with connecting plate, connecting plate and fixed cover sliding connection, connecting plate top fixedly connected with reset spring, reset spring locate first sliding tray inside and with fixed cover fixed connection, the second spacing groove has been seted up to the sliding sleeve bottom, the spacing inslot portion of second is equipped with the filter screen, concrete wastewater treatment device beneficial effect is: the problem of concrete waste water have a large amount of raw and other materials adhesion on the filter screen surface when filtering, cause the jam to the filter screen easily to cause the waste water jam is solved.
Description
Technical Field
The utility model relates to the technical field of wastewater treatment, in particular to a concrete wastewater treatment device.
Background
The wastewater treatment is to treat the wastewater by physical, chemical and biological methods, purify the wastewater and reduce pollution, so as to achieve the purposes of wastewater recovery and reuse and full utilization of water resources.
The prior art has the following defects: most of the existing waste water treatment is that the waste water is simply filtered by impurities in the waste water through a filter screen, then a corresponding neutralizer is added into the filtered waste water to degrade harmful substances, but a large amount of raw materials can be doped into the concrete waste water, a large amount of raw materials can be adhered to the surface of the filter screen during filtering, the filter screen is easily blocked, and therefore the waste water is blocked, and when the corresponding neutralizer is added into the waste water, because the waste water is in a static or slightly flowing state, the neutralization efficiency between the neutralizer and the waste water is too low, so that the waste of the neutralizer and the incomplete environment pollution caused by the neutralization of the waste water are easily caused.
Therefore, the concrete wastewater treatment device is necessary to be invented.
SUMMERY OF THE UTILITY MODEL
Therefore, the concrete wastewater treatment device provided by the utility model can effectively drive the filter screen to move downwards through the sliding connection between the sliding sleeve and the fixed sleeve and the elastic force provided by the reset spring, and can effectively control the sliding connection between the sliding sleeve and the fixed sleeve to drive the filter screen to move upwards through the rotation of the disc by taking the rotating rod as the center of a circle, so that the filter screen is effectively driven to vibrate up and down, and the adhered substances on the filter screen are cleaned through vibration and the impact force of water flow, so that the problem that the filter screen is easily blocked due to the fact that a large amount of raw materials are adhered to the surface of the filter screen when the concrete wastewater is filtered is solved.
In order to achieve the above purpose, the utility model provides the following technical scheme: the concrete wastewater treatment device comprises a filter tank, wherein the middle part of the outer side of the filter tank is fixedly connected with a first motor, and a filter mechanism is arranged inside the filter tank;
the filtering mechanism comprises a tank cover, a first limiting groove is formed in the edge of the bottom of the tank cover, the top of the filtering tank is arranged in the first limiting groove and movably sleeved with the tank cover, a fixed sleeve is fixedly connected to the bottom of the tank cover, a first sliding groove is formed in the bottom of the fixed sleeve, a sliding sleeve is arranged in the first sliding groove, a connecting plate is fixedly connected to the top of the sliding sleeve, the connecting plate is arranged in the first sliding groove and is in sliding connection with the fixed sleeve, a reset spring is fixedly connected to the top of the connecting plate, the reset spring is arranged in the first sliding groove and is fixedly connected with the fixed sleeve, a second limiting groove is formed in the bottom of the sliding sleeve, a filter screen is arranged in the second limiting groove, clamping blocks are fixedly connected to two ends of the filter screen, the clamping blocks are arranged in the second limiting groove and are in sliding connection with the sliding sleeve, and a first rotating hole is formed in the outer side of the filtering tank, first downthehole portion of rotating is equipped with the dwang, dwang one end and first motor output end fixed connection, dwang other end fixedly connected with disc, dwang one end is located a disc side edge department.
Preferably, filter jar outside top fixedly connected with ring board, laminating bottom the cover at ring board top, four fixed blocks of cover bottom fixedly connected with, four the fixed block is circumference array distribution, the rotation groove has been seted up to the fixed block bottom, it is equipped with the connecting block to rotate inslot portion, the connecting block is located and is rotated inslot portion and rotate with the fixed block and be connected, connecting block bottom fixedly connected with joint piece, the joint groove has been seted up to ring board top, the joint piece is located joint inslot portion and is cup jointed with ring board activity.
Preferably, filter jar inner chamber middle part fixedly connected with backup pad, backup pad bottom axle center department fixedly connected with reciprocating screw, reciprocating screw outside cover is equipped with the bearing frame, the bearing frame passes through ball nut pair with reciprocating screw to be connected, the bearing frame outside fixedly connected with stirring cover.
Preferably, filter tank bottoms fixedly connected with second motor, filter tank bottoms axle center department has seted up the second and has rotated the hole, the second rotates downthehole portion and is equipped with the connecting rod, the connecting rod is located the second and is rotated downthehole portion and rotate with the filter tank and be connected, connecting rod one end and second motor output fixed connection, connecting rod other end fixedly connected with stirring board, stirring board one end fixedly connected with fly leaf, the equal fixedly connected with gag lever post in stirring board top both ends, the through hole has all been seted up at stirring cover top both ends, the gag lever post locate inside and with stirring cover sliding connection of through hole.
Preferably, the top of the filtering tank is fixedly connected with a water inlet funnel, the bottom of the outer side of the filtering tank is fixedly connected with a water outlet pipe, and the water inlet funnel and the outer side of the water outlet pipe are fixedly connected with a switch valve.
Preferably, it is equipped with supporting component to filter tank bottoms portion, supporting component includes four lower margins, four the lower margin is circumference array distribution, lower margin top and filtration tank bottoms portion fixed connection.
Preferably, the bottom of the filter tank is provided with a support assembly, the support assembly comprises a support table, and the top of the support table is fixedly connected with the bottom of the filter tank.
The utility model has the beneficial effects that:
1. according to the utility model, the filter screen can be effectively driven to move downwards through the sliding connection between the sliding sleeve and the fixed sleeve and the elastic force provided by the reset spring, the disc rotates by taking the rotating rod as a circle center, the sliding connection between the sliding sleeve and the fixed sleeve can be effectively controlled, so that the filter screen is driven to move upwards, and the filter screen is further effectively driven to vibrate up and down, so that adhered objects on the filter screen are cleaned through vibration and the impact force of water flow, the filter screen is prevented from being blocked by concrete raw materials, and the problem that the filter screen is easily blocked due to the fact that a large amount of raw materials are adhered to the surface of the filter screen when concrete waste water is filtered is effectively solved.
2. According to the utility model, the second motor drives the stirring plate to rotate so as to drive the two limiting rods to rotate, the limiting rods are connected with the two ends of the top of the stirring sleeve in a sliding manner so as to drive the stirring sleeve to rotate, and the stirring sleeve can effectively move up and down while rotating through the threaded connection between the stirring sleeve and the reciprocating screw rod, so that the interior of the filtering tank is effectively stirred, and the neutralization efficiency between the neutralizer and the wastewater is increased.
Drawings
FIG. 1 is a schematic view of the overall structure provided by the present invention;
FIG. 2 is a cross-sectional view of the front structure provided by the present invention;
FIG. 3 is an exploded view of a can lid structure provided by the present invention;
FIG. 4 is a cross-sectional view of a can lid construction provided by the present invention;
FIG. 5 is a schematic view of the structure of the stirring sleeve provided by the present invention;
FIG. 6 is a schematic view of a support table according to embodiment 2 of the present invention;
in the figure: 1 filter tank, 2 first motor, 3 cover, 4 fixed cover, 5 sliding sleeve, 6 connecting plates, 7 reset spring, 8 filter screens, 9 dwang, 10 disc, 11 ring board, 12 fixed block, 13 connecting blocks, 14 joint piece, 15 backup pads, 16 reciprocal lead screw, 17 stirring cover, 18 second motor, 19 connecting rods, 20 stirring board, 21 fly leaf, 22 gag lever post, 23 funnel that intakes, 24 outlet pipes, 25 lower margin, 26 brace tables.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Example 1:
referring to the attached drawings 1-5, the concrete wastewater treatment device provided by the utility model comprises a filter tank 1, wherein the middle part of the outer side of the filter tank 1 is fixedly connected with a first motor 2, and a filter mechanism is arranged in the filter tank 1;
the filtering mechanism comprises a tank cover 3, a first limiting groove is formed in the edge of the bottom of the tank cover 3, the top of the filtering tank is arranged in the first limiting groove and movably sleeved with the tank cover 3, a fixed sleeve 4 is fixedly connected to the bottom of the tank cover 3, a first sliding groove is formed in the bottom of the fixed sleeve 4, a sliding sleeve 5 is arranged in the first sliding groove, a connecting plate 6 is fixedly connected to the top of the sliding sleeve 5, the connecting plate 6 is arranged in the first sliding groove and is in sliding connection with the fixed sleeve 4, a reset spring 7 is fixedly connected to the top of the connecting plate 6, the reset spring 7 is arranged in the first sliding groove and is fixedly connected with the fixed sleeve 4, a second limiting groove is formed in the bottom of the sliding sleeve 5, a filter screen 8 is arranged in the second limiting groove, clamping blocks are fixedly connected to two ends of the filter screen 8, and are arranged in the second limiting groove and are in sliding connection with the sliding sleeve 5, the filter tank is characterized in that a first rotating hole is formed in the outer side of the filter tank 1, a rotating rod 9 is arranged in the first rotating hole, one end of the rotating rod 9 is fixedly connected with the output end of the first motor 2, a disc 10 is fixedly connected with the other end of the rotating rod 9, one end of the rotating rod 9 is positioned at the edge of one side of the disc 10, the filter screen 8 can be effectively driven to move downwards through the sliding connection between the sliding sleeve 5 and the fixed sleeve 4 and the elastic force provided by the reset spring 7, the disc 10 rotates by taking the rotating rod 9 as the center of a circle, the sliding connection between the sliding sleeve 5 and the fixed sleeve 4 can be effectively controlled so as to drive the filter screen 8 to move upwards, and then the filter screen 8 is effectively driven to vibrate upwards and downwards, so that adhered matters on the filter screen 8 are cleaned through the impact force of vibration and water flow, and the blockage of a concrete raw material on the filter screen 8 is avoided;
further, a circular ring plate 11 is fixedly connected to the top of the outer side of the filter tank 1, the top of the circular ring plate 11 is attached to the bottom of the tank cover 3, four fixed blocks 12 are fixedly connected to the bottom of the tank cover 3, the four fixed blocks 12 are distributed in a circumferential array, a rotating groove is formed in the bottom of each fixed block 12, a connecting block 13 is arranged in each rotating groove, the connecting block 13 is arranged in each rotating groove and is rotatably connected with the corresponding fixed block 12, a clamping block 14 is fixedly connected to the bottom of each connecting block 13, a clamping groove is formed in the top of the circular ring plate 11, the clamping block 14 is arranged in each clamping groove and is movably sleeved with the circular ring plate 11, the tank cover 3 can be effectively fixed to the top of the tank cover 3 through movable sleeving between the clamping block 14 and the clamping groove and rotary connection between the clamping block 14 and the fixed blocks 12, and the tank cover 3 can be conveniently disassembled and assembled;
furthermore, a supporting plate 15 is fixedly connected to the middle of the inner cavity of the filter tank 1, a reciprocating screw 16 is fixedly connected to the axis of the bottom of the supporting plate 15, a bearing seat is sleeved on the outer side of the reciprocating screw 16, the bearing seat is connected with the reciprocating screw 16 through a ball nut pair, a stirring sleeve 17 is fixedly connected to the outer side of the bearing seat, and the stirring sleeve 17 can be effectively driven to move up and down and rotate left and right through the threaded connection between the stirring sleeve 17 and the reciprocating screw 16;
further, filter 1 bottom fixedly connected with second motor 18 of jar, 1 bottom axle center department of jar has been seted up to the filtration and has been rotated the hole, the second rotates downthehole portion and is equipped with connecting rod 19, connecting rod 19 is located the second and is rotated downthehole portion and rotate with filter jar 1 and be connected, connecting rod 19 one end and 18 output fixed connection of second motor, 19 other end fixedly connected with stirring board 20 of connecting rod, 20 one end fixedly connected with fly leaf 21 of stirring board, 20 top both ends of stirring board fixedly connected with gag lever post 22, the through hole has all been seted up at agitator sleeve 17 top both ends, gag lever post 22 locate inside the through hole and with agitator sleeve 17 sliding connection, thereby drive the rotation of stirring board 20 through second motor 18 and drive the rotation of gag lever post 22, and then drive the rotation of agitator sleeve 17, through the threaded connection between agitator sleeve 17 and the reciprocal lead screw 16 can effectually drive reciprocating of agitator sleeve 17 and reciprocate and the reciprocating of agitator sleeve 17 Rotating left and right;
furthermore, the top of the filter tank 1 is fixedly connected with a water inlet funnel 23, the bottom of the outer side of the filter tank 1 is fixedly connected with a water outlet pipe 24, and the outer sides of the water inlet funnel 23 and the water outlet pipe 24 are fixedly connected with switch valves;
further, it is equipped with supporting component to filter jar 1 bottom, supporting component includes four lower margins 25, four lower margins 25 are circumference array distribution, lower margin 25 top and filter 1 bottom fixed connection of jar.
The using process of the utility model is as follows: when the device is used, a user stably places the device on the ground through the four ground feet 25, then wastewater is poured into an inner cavity of the filter tank 1 through the water inlet pipe, the first motor 2 drives the rotating rod 9 to rotate, so that the disc 10 is driven to rotate by taking the rotating rod 9 as a circle center, when one end, far away from the rotating rod 9, of the outer side of the disc 10 moves to the topmost position, the disc 10 drives the sliding sleeve 5 and the fixing sleeve 4 to be connected through sweat in a sliding mode, so that the filter screen 8 is driven to move upwards, when one end, far away from the rotating rod 9, of the outer side of the disc 10 moves to the bottommost position, the sliding sleeve 5 can effectively move downwards through elastic force provided by the reset spring 7, so that the filter screen 8 vibrates vertically, and adhered substances on the filter screen 8 are cleaned through vibration through the vertical vibration of the filter screen 8 and the impact force of water flow.
When the first motor 2 is turned on and the second motor 18 is turned on by the user, the second motor 18 drives the connecting rod 19 to rotate. Thereby drive stirring board 20 and fly leaf 21's rotation, thereby stir the waste water after removing the impurity to filtering jar 1 inside, stirring board 20 rotates the rotation that drives gag lever post 22 simultaneously, gag lever post 22 rotates the rotation that drives agitator sleeve 17, make agitator sleeve 17 rotate on reciprocal lead screw through the threaded connection between agitator sleeve 17 and the reciprocal lead screw, thereby drive agitator sleeve 17 and reciprocate and the level rotates and then carry out abundant stirring to waste water filtering jar 1 inside, the end user connects and take off cover 3 through the activity between joint piece 14 and the fixed block 12 and the joint piece 14 and the joint groove, then handle the inside filter material of sliding sleeve 5, and cup joint through the activity between filter screen 8 and the sliding sleeve 5 and dismantle and wash filter screen 8.
Example 2:
referring to fig. 6, the concrete wastewater treatment apparatus provided by the present invention is different from embodiment 1 in that a support assembly is disposed at the bottom of the filtration tank 1, the support assembly includes a support platform 26, and the top of the support platform 26 is fixedly connected to the bottom of the filtration tank 1.
The using process is as follows: when the device is used, a user stably places the device on the ground through the support table 26, then wastewater is poured into the inner cavity of the filter tank 1 through the water inlet pipe, the first motor 2 drives the rotating rod 9 to rotate, so that the disc 10 is driven to rotate by taking the rotating rod 9 as the center of a circle, when one end of the outer side of the disc 10, which is far away from the rotating rod 9, moves to the topmost position, the disc 10 drives the sliding sleeve 5 and the fixed sleeve 4 to be connected with delivery sweat in a sliding manner, so that the filter screen 8 is driven to move upwards, when one end of the outer side of the disc 10, which is far away from the rotating rod 9, moves to the bottommost position, the sliding sleeve 5 can effectively move downwards through the elastic force provided by the reset spring 7, so that the filter screen 8 vibrates upwards and downwards, through the up-down vibration of the filter screen 8 and the impact force of water flow, adhered substances on the filter screen 8 are cleaned through the vibration, and the device is stably placed on the ground through the support table 26, compared with the embodiment 1 in which the device is stably placed on the ground through four ground feet 25, the device has the advantages that the contact area between the support platform 26 and the ground is larger, and the stability is stronger.
The above description is only a preferred embodiment of the present invention, and any person skilled in the art may modify the present invention or modify it into an equivalent technical solution by using the technical solution described above. Therefore, any simple modifications or equivalent substitutions made in accordance with the technical solution of the present invention are within the scope of the claims of the present invention.
Claims (7)
1. Concrete effluent treatment plant, including filtering jar (1), its characterized in that: the middle part of the outer side of the filtering tank (1) is fixedly connected with a first motor (2), and a filtering mechanism is arranged in the filtering tank (1);
the filtering mechanism comprises a tank cover (3), a first limiting groove is formed in the bottom edge of the tank cover (3), the top of the filtering tank (1) is arranged in the first limiting groove and movably sleeved with the tank cover (3), a fixed sleeve (4) is fixedly connected to the bottom of the tank cover (3), a first sliding groove is formed in the bottom of the fixed sleeve (4), a sliding sleeve (5) is arranged in the first sliding groove, a connecting plate (6) is fixedly connected to the top of the sliding sleeve (5), the connecting plate (6) is arranged in the first sliding groove and slidably connected with the fixed sleeve (4), a reset spring (7) is fixedly connected to the top of the connecting plate (6), the reset spring (7) is arranged in the first sliding groove and fixedly connected with the fixed sleeve (4), a second limiting groove is formed in the bottom of the sliding sleeve (5), a filter screen (8) is arranged in the second limiting groove, the equal fixedly connected with fixture block in filter screen (8) both ends, the fixture block locate the second spacing inslot portion and with sliding sleeve (5) sliding connection, filter jar (1) outside and seted up first rotation hole, first rotation downthehole portion is equipped with dwang (9), dwang (9) one end and first motor (2) output fixed connection, dwang (9) other end fixedly connected with disc (10), dwang (9) one end is located disc (10) one side edge.
2. The concrete wastewater treatment apparatus according to claim 1, wherein: filter jar (1) outside top fixedly connected with ring board (11), ring board (11) top and cover (3) bottom are laminated mutually, four fixed block (12) of cover (3) bottom fixedly connected with, four fixed block (12) are circumference array distribution fixed block (12), the rotation groove has been seted up to fixed block (12) bottom, it is equipped with connecting block (13) to rotate inslot portion, connecting block (13) are located and are rotated inslot portion and rotate with fixed block (12) and be connected, connecting block (13) bottom fixedly connected with joint piece (14), the joint groove has been seted up at ring board (11) top, joint piece (14) are located joint inslot portion and are cup jointed with ring board (11) activity.
3. The concrete wastewater treatment apparatus according to claim 1, wherein: filter jar (1) inner chamber middle part fixedly connected with backup pad (15), backup pad (15) bottom axle center department fixedly connected with reciprocal lead screw (16), reciprocal lead screw (16) outside cover is equipped with the bearing frame, the bearing frame passes through ball nut pair with reciprocal lead screw (16) and is connected, bearing frame outside fixedly connected with stirring cover (17).
4. The concrete wastewater treatment apparatus according to claim 3, wherein: filter jar (1) bottom fixedly connected with second motor (18), it has seted up the second and has rotated the hole to filter jar (1) bottom axle center department, the second rotates downthehole portion and is equipped with connecting rod (19), connecting rod (19) are located the second and are rotated downthehole portion and rotate with filter jar (1) and be connected, connecting rod (19) one end and second motor (18) output end fixed connection, connecting rod (19) other end fixed connection has stirring board (20), stirring board (20) one end fixedly connected with fly leaf (21), the equal fixedly connected with gag lever post (22) in stirring board (20) top both ends, the through hole has all been seted up at stirring cover (17) top both ends, gag lever post (22) are located the through hole inside and with stirring cover (17) sliding connection.
5. The concrete wastewater treatment apparatus according to claim 1, wherein: filter jar (1) top fixedly connected with funnel (23) of intaking, filter jar (1) outside bottom fixedly connected with outlet pipe (24), the equal fixedly connected with ooff valve in funnel (23) and outlet pipe (24) outside of intaking.
6. The concrete wastewater treatment apparatus according to claim 1, wherein: filter jar (1) bottom and be equipped with supporting component, supporting component includes four lower margin (25), four lower margin (25) are circumference array distribution, lower margin (25) top and filter jar (1) bottom fixed connection.
7. The concrete wastewater treatment apparatus according to claim 1, wherein: the bottom of the filter tank (1) is provided with a supporting component, the supporting component comprises a supporting platform (26), and the top of the supporting platform (26) is fixedly connected with the bottom of the filter tank (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023234197.5U CN215592772U (en) | 2020-12-29 | 2020-12-29 | Concrete wastewater treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202023234197.5U CN215592772U (en) | 2020-12-29 | 2020-12-29 | Concrete wastewater treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215592772U true CN215592772U (en) | 2022-01-21 |
Family
ID=79868706
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202023234197.5U Active CN215592772U (en) | 2020-12-29 | 2020-12-29 | Concrete wastewater treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215592772U (en) |
-
2020
- 2020-12-29 CN CN202023234197.5U patent/CN215592772U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Concrete wastewater treatment device Effective date of registration: 20231228 Granted publication date: 20220121 Pledgee: Bank of China Limited Jingzhou Branch Pledgor: Hubei Dongzheng Technology Group Co.,Ltd. Registration number: Y2023980075200 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right |