CN216916221U - Water environment heavy metal on-line monitoring device - Google Patents
Water environment heavy metal on-line monitoring device Download PDFInfo
- Publication number
- CN216916221U CN216916221U CN202123298352.4U CN202123298352U CN216916221U CN 216916221 U CN216916221 U CN 216916221U CN 202123298352 U CN202123298352 U CN 202123298352U CN 216916221 U CN216916221 U CN 216916221U
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- floating body
- wall
- heavy metal
- water
- rotating roller
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- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 105
- 229910001385 heavy metal Inorganic materials 0.000 title claims abstract description 47
- 238000012806 monitoring device Methods 0.000 title claims abstract description 21
- 238000009434 installation Methods 0.000 claims abstract description 30
- 239000000523 sample Substances 0.000 claims description 15
- 239000007788 liquid Substances 0.000 claims description 8
- 239000006260 foam Substances 0.000 claims description 5
- 238000012544 monitoring process Methods 0.000 abstract description 20
- 238000001514 detection method Methods 0.000 abstract description 8
- 238000000034 method Methods 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 244000005700 microbiome Species 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000003911 water pollution Methods 0.000 description 1
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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
- Y02A20/20—Controlling water pollution; Waste water treatment
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- Sampling And Sample Adjustment (AREA)
Abstract
The utility model discloses a water environment heavy metal on-line monitoring device, which comprises a floating body, wherein an installation cavity is arranged in the floating body, the inner wall of the top part and the inner wall of the bottom part of the installation cavity are rotationally connected with the same rotating roller, a power assembly for driving the rotating roller to rotate is arranged in the installation cavity, the bottom of the rotating roller penetrates through the inner wall of the bottom of the mounting cavity and extends to the outer side of the bottom of the floating body, the rotating roller is provided with a driving assembly for driving the floating body to move forwards, and the floating body is internally provided with a water storage tank. The propeller drives the floating body to move, the depth of the filter head is adjusted through the electric push rod, the water environment of different depths in different regions can be rapidly detected according to monitoring requirements, convenience is brought to detection personnel, the monitoring range of the water environment is enlarged, and accuracy of monitoring data is improved.
Description
Technical Field
The utility model relates to the technical field of heavy metal pollution monitoring, in particular to a water environment heavy metal online monitoring device.
Background
The era is continuously developed, the urbanization process is continuously accelerated, most cities face serious water pollution problems, and scientific research and investigation show that the heavy metal pollution condition of each region of China is gradually worsened and the water environment is negatively influenced. When heavy metals are leaked into a water body, the heavy metals cannot be normally degraded by microorganisms in the water body, and the harm of metal pollution cannot be eliminated by means of the self-purification effect of the water body, so that the water body is seriously harmed, and in order to make a corresponding treatment scheme for the water environment pollution, the heavy metals in the water environment need to be monitored.
The existing water environment heavy metal online monitoring system can not rapidly detect the water environment in different regions and different depths according to the monitoring requirements, inconvenience is brought to detection personnel, the monitoring range of the water environment is also reduced, and therefore the accuracy of monitoring data is affected.
SUMMERY OF THE UTILITY MODEL
The utility model aims to solve the defects that in the prior art, a water environment heavy metal online monitoring system is complex in structure and cannot rapidly detect water environments in different regions and different depths according to monitoring requirements, and provides a water environment heavy metal online monitoring device.
In order to achieve the purpose, the utility model adopts the following technical scheme:
an on-line monitoring device for heavy metal in water environment comprises a floating body, wherein an installation cavity is formed in the floating body, the top inner wall and the bottom inner wall of the installation cavity are rotatably connected with the same rotating roller, a power assembly for driving the rotating roller to rotate is arranged in the installation cavity, the bottom of the rotating roller penetrates through the bottom inner wall of the installation cavity and extends to the outer side of the bottom of the floating body, a driving assembly for driving the floating body to move forwards is arranged on the rotating roller, a water storage groove is formed in the floating body, a water pump is arranged on the bottom inner wall of the installation cavity, the liquid outlet end of the water pump is communicated with the inside of the water storage groove through a guide pipe, a corrugated pipe is fixedly connected to the liquid inlet end of the water pump, the bottom end of the corrugated pipe extends to the lower part of the floating body and is fixedly sleeved with a mounting plate, an inductor is fixedly mounted at the bottom of the mounting plate, and a heavy metal detector is fixedly mounted on the bottom inner wall of the installation cavity, the utility model discloses a heavy metal detector, including installation cavity, bottom, top fixedly connected with strip shaped plate, top fixedly connected with transmitter, the transmitter comprises receiving terminal and transmitting terminal, the transmitter respectively with inductor, heavy metal detector electric connection, the top inner wall of installation cavity is provided with the battery.
Preferably, two foam blocks are symmetrically and fixedly arranged at the bottom of the floating body.
Preferably, the bottom of the floating body is fixedly connected with a water pipe, an electromagnetic valve is arranged on the water pipe, and the top of the water pipe penetrates through the floating body and extends into the water storage tank.
Preferably, power component includes two fixed plates of the bottom inner wall symmetry fixed connection of installation cavity, two one side that the fixed plate is close to each other is rotated and is connected with same worm, fixed cover is equipped with the worm wheel with worm engaged with on the outer wall of live-rollers, the bottom inner wall of installation cavity is fixed and is provided with first motor, the one end of worm runs through corresponding fixed plate and extends to fixed plate one side and with the output shaft fixed connection of first motor.
Preferably, the driving assembly comprises a mounting groove formed in the rotating roller, a second motor is fixedly arranged in the mounting groove, and an output shaft of the second motor penetrates through the inner wall of one side of the mounting groove, extends to the outer side of the rotating roller and is fixedly sleeved with a propeller.
Preferably, a sliding rod penetrates through the floating body in a sliding connection mode, the bottom of the sliding rod is fixedly connected with the top of the mounting plate, an electric push rod is fixedly arranged at the top of the floating body, and the output end of the electric push rod is fixedly connected with the top of the sliding rod through a connecting block.
Preferably, the bottom of the corrugated pipe is fixedly connected with a filter head, and the top of the filter head is fixedly connected with the bottom of the mounting plate.
Preferably, a controller is fixedly mounted on the inner wall of one side of the mounting cavity, and the controller is electrically connected with the first motor, the second motor, the water pump, the electric push rod and the electromagnetic valve.
Compared with the prior art, the utility model has the beneficial effects that:
1. in the utility model, a signal is remotely transmitted to a transmitter through a computer, after the transmitter receives the signal, the first motor and the second motor are started to be matched to move a floating body to a corresponding region, the second motor rotates to drive a propeller to rotate, the propeller rotates to push the floating body to advance, in the advancing process of the floating body, the first motor rotates to drive a rotating roller to rotate, the rotating roller rotates to adjust the direction of the propeller, the propeller direction is adjusted to adjust the advancing direction of the floating body, and when the floating body moves to the region to be measured, the first motor and the second motor automatically stop rotating;
2. according to the utility model, the telescopic action of the electric push rod is started, the filter head is moved to the depth to be detected to extract a detected water sample, the telescopic action of the electric push rod drives the slide rod to slide, the slide rod drives the mounting plate to move, the mounting plate drives the filter head to move, in the moving process of the filter head, the sensor senses the corresponding depth and transmits a signal to the transmitter, the transmitter transmits the signal to a computer of a monitoring person, and after the filter head is lowered to the depth to be detected, the monitoring person closes the work of the electric push rod through the controller;
3. according to the utility model, a water sample is pumped into the water storage tank by starting the water pump, the arranged filter head can prevent large garbage from being pumped into the water storage tank to cause the blockage of the corrugated pipe, after the water storage tank is filled with the water sample, the heavy metal detector is automatically started to detect heavy metals in the water sample in the water storage tank, after detection, detected heavy metal index data are transmitted to the transmitter and then transmitted to a computer of a monitoring person by the transmitter, and after detection is finished, the electromagnetic valve is started to discharge the water sample in the water storage tank through the water pipe.
The water environment monitoring device is simple in structure and convenient to use, the propeller drives the floating body to move, the depth of the filter head is adjusted through the electric push rod, the water environment with different depths in different regions can be quickly detected according to monitoring requirements, convenience is brought to detection personnel, the monitoring range of the water environment is expanded, and therefore the accuracy of monitoring data is improved.
Drawings
FIG. 1 is a front sectional view of a water environment heavy metal on-line monitoring device provided by the utility model;
FIG. 2 is an enlarged view of a part A of the water environment heavy metal on-line monitoring device provided by the utility model;
fig. 3 is a system block diagram of a water environment heavy metal on-line monitoring device provided by the utility model.
In the figure: 1. a float; 2. a mounting cavity; 3. a first motor; 4. a fixing plate; 5. a propeller; 6. a second motor; 7. mounting grooves; 8. a rotating roller; 9. a worm; 10. a water pump; 11. a slide bar; 12. an electric push rod; 13. a bellows; 14. a worm gear; 15. a controller; 16. A heavy metal detector; 17. a water storage tank; 18. a water pipe; 19. a foam block; 20. an electromagnetic valve; 21. a strip plate; 22. a transmitter; 23. mounting a plate; 24. an inductor; 25. a filter head; 26. and (4) a storage battery.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.
Example one
Referring to fig. 1-3, an online monitoring device for heavy metal in water environment comprises a floating body 1, wherein a mounting cavity 2 is arranged in the floating body 1, the top inner wall and the bottom inner wall of the mounting cavity 2 are rotatably connected with the same rotating roller 8, a power assembly for driving the rotating roller 8 to rotate is arranged in the mounting cavity 2, the bottom of the rotating roller 8 penetrates through the bottom inner wall of the mounting cavity 2 and extends to the outside of the bottom of the floating body 1, a driving assembly for driving the floating body 1 to move forwards is arranged on the rotating roller 8, a water storage tank 17 is arranged in the floating body 1, a water pump 10 is arranged on the bottom inner wall of the mounting cavity 2, the liquid outlet end of the water pump 10 is communicated with the inside of the water storage tank 17 through a guide pipe, a corrugated pipe 13 is fixedly connected with the liquid inlet end of the water pump 10, a mounting plate 23 is fixedly sleeved at the bottom end of the corrugated pipe 13 and extends to the lower part of the floating body 1, an inductor 24 is fixedly arranged at the bottom of the mounting plate 23, and a heavy metal detector 16 is fixedly arranged on the bottom inner wall of the mounting cavity 2, the detection probe of heavy metal detector 16 runs through in one side inner wall of installation cavity 2 extends to catch basin 17, the top fixedly connected with bar 21 of body 1, one side top fixedly connected with transmitter 22 of bar 21, transmitter 22 comprises receiving terminal and transmitting terminal, transmitter 22 respectively with inductor 24, the 16 electric connection of heavy metal detector, the top inner wall of installation cavity 2 is provided with battery 26.
Example two
Referring to fig. 1-3, an online monitoring device for heavy metals in a water environment comprises a floating body 1, wherein two foam blocks 19 are symmetrically and fixedly arranged at the bottom of the floating body 1, the buoyancy of the floating body 1 can bear heavier objects through the two foam blocks 19, an installation cavity 2 is formed in the floating body 1, the top inner wall and the bottom inner wall of the installation cavity 2 are rotatably connected with the same rotating roller 8, a power assembly for driving the rotating roller 8 to rotate is arranged in the installation cavity 2, the power assembly comprises two fixing plates 4 symmetrically and fixedly connected with the bottom inner wall of the installation cavity 2, one sides, close to each other, of the two fixing plates 4 are rotatably connected with the same worm 9, a worm wheel 14 meshed with the worm 9 is fixedly sleeved on the outer wall of the rotating roller 8, a first motor 3 is fixedly arranged on the bottom inner wall of the installation cavity 2, one end of the worm 9 penetrates through the corresponding fixing plate 4 and extends to one side of the fixing plate 4 and is fixedly connected with an output shaft of the first motor 3, the rotation of the rotating roller 8 is driven by the rotation of the first motor 3, thereby achieving the adjustment of the rotation angle of the rotating roller 8, the bottom of the rotating roller 8 penetrates through the bottom inner wall of the installation cavity 2 and extends to the outer side of the bottom of the floating body 1, the rotating roller 8 is provided with a driving component for driving the floating body 1 to advance, the driving component comprises an installation groove 7 arranged on the rotating roller 8, a second motor 6 is fixedly arranged in the installation groove 7, the output shaft of the second motor 6 penetrates through the inner wall of one side of the installation groove 7 and extends to the outer side of the rotating roller 8 and is fixedly sleeved with a propeller 5, the second motor 6 is arranged to drive the propeller 5 to rotate, thereby providing advancing power for the floating body 1, the water storage tank 17 is arranged in the floating body 1, the bottom of the floating body 1 is fixedly connected with a water pipe 18, the electromagnetic valve 20 is arranged on the water pipe 18, the top of the water pipe 18 penetrates through the floating body 1 and extends to the water storage tank 17, through the arranged water pipe 18 and the electromagnetic valve 20, after the detection is finished, a water sample in the water storage tank 17 can be discharged quickly, the inner wall of the bottom of the mounting cavity 2 is provided with the water pump 10, the liquid outlet end of the water pump 10 is communicated with the inside of the water storage tank 17 through a guide pipe, the liquid inlet end of the water pump 10 is fixedly connected with the corrugated pipe 13, the bottom end of the corrugated pipe 13 extends to the lower part of the floating body 1 and is fixedly sleeved with the mounting plate 23, the bottom of the corrugated pipe 13 is fixedly connected with the filter head 25, the top of the filter head 25 is fixedly connected with the bottom of the mounting plate 23, the arranged filter head 25 can filter some large garbage in water to prevent the corrugated pipe 13 from being blocked, the floating body 1 is connected with the sliding rod 11 in a penetrating and sliding manner, the bottom of the sliding rod 11 is fixedly connected with the top of the mounting plate 23, the top of the floating body 1 is fixedly provided with the electric push rod 12, the output end of the electric push rod 12 is fixedly connected with the top of the sliding rod 11 through the connecting block, the sliding rod 11 is driven to slide by the electric push rod 12, so as to drive the filter head 25 to move, so as to sample water samples with different depths, the inductor 24 is fixedly arranged at the bottom of the mounting plate 23, the heavy metal detector 16 is fixedly arranged on the inner wall of the bottom of the mounting cavity 2, the detection probe of the heavy metal detector 16 penetrates through the inner wall of one side of the mounting cavity 2 and extends into the water storage tank 17, the strip-shaped plate 21 is fixedly connected to the top of the floating body 1, the emitter 22 is fixedly connected to the top of one side of the strip-shaped plate 21, the emitter 22 is composed of a receiving end and an emitting end, the emitter 22 is respectively electrically connected with the inductor 24 and the heavy metal detector 16, the inner wall of the top of the mounting cavity 2 is provided with a storage battery 26, the controller 15 is fixedly arranged on the inner wall of one side of the mounting cavity 2, the controller 15 is electrically connected with the first motor 3, the second motor 6, the water pump 10, the electric push rod 12 and the electromagnetic valve 20, through the controller 15, the operation of the control equipment can be more convenient, and the purpose of on-line monitoring is achieved.
The working principle is as follows: the equipment is placed in water, when the water environment of a certain depth of a certain area needs to be detected, a signal is remotely transmitted to a transmitter 22 through a computer, after the transmitter 22 receives the signal, the first motor 3 and the second motor 6 are started to be matched to move the floating body 1 to the corresponding area, the second motor 6 rotates to drive the propeller 5 to rotate, the propeller 5 rotates to push the floating body 1 to advance, in the advancing process of the floating body 1, the first motor 3 rotates to drive the worm 9 to rotate, the worm 9 rotates to drive the worm wheel 14 to rotate, the worm wheel 14 rotates to drive the rotating roller 8 to rotate, the rotating roller 8 rotates to adjust the direction of the propeller 5, the propeller 5 adjusts the advancing direction of the floating body 1, when the floating body 1 moves to the area needing to be measured, the first motor 3 and the second motor 6 automatically stop rotating, at this time, after the controller 15 receives a signal received by the emitter 22, the controller starts the extension and retraction of the electric push rod 12 according to the depth to be measured, the filter head 25 is moved to the depth to be measured to extract a detected water sample, the extension and retraction of the electric push rod 12 drives the slide rod 11 to slide, the slide rod 11 slides to drive the mounting plate 23 to move, the mounting plate 23 moves to drive the filter head 25 to move, in the process of moving the filter head 25, the sensor 24 senses the corresponding depth and transmits the signal to the emitter 22, the emitter 22 transmits the signal to the computer of a monitoring person, when the filter head 25 falls to the depth to be detected, the monitoring person closes the work of the electric push rod 12 through the controller 15, at this time, the work of the water pump 10 can be started to pump the water sample into the water storage tank 17, and the filter head 25 can prevent large garbage from being pumped to cause the blockage of the corrugated pipe 13, after being full of the water sample in the catch basin 17, the heavy metal detector 16 is automatically opened and is detected the heavy metal in the water sample in the catch basin 17, detects the back, transmits the heavy metal index data who detects for the transmitter 22, transmits the computer of monitoring personnel by the transmitter 22 again on, after detecting, open the solenoid valve 20 with the water sample in the catch basin 17 through water pipe 18 emit can.
However, as is well known to those skilled in the art, the working principle and wiring method of the first motor 3, the second motor 6, the water pump 10, the electric push rod 12, the heavy metal detector 16, the electromagnetic valve 20, the inductor 24 are common and are conventional means or common knowledge, and thus will not be described herein, and those skilled in the art can make any choice according to their needs or convenience.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.
Claims (9)
1. The water environment heavy metal online monitoring device comprises a floating body (1) and is characterized in that a mounting cavity (2) is formed in the floating body (1), the top inner wall and the bottom inner wall of the mounting cavity (2) are rotatably connected with the same rotating roller (8), a power assembly for driving the rotating roller (8) to rotate is arranged in the mounting cavity (2), the bottom of the rotating roller (8) penetrates through the bottom inner wall of the mounting cavity (2) and extends to the outer side of the bottom of the floating body (1), a driving assembly for driving the floating body (1) to move forwards is arranged on the rotating roller (8), a water storage groove (17) is formed in the floating body (1), a water pump (10) is arranged on the bottom inner wall of the mounting cavity (2), the liquid outlet end of the water pump (10) is communicated with the inside of the water storage groove (17) through a guide pipe, and a corrugated pipe (13) is fixedly connected with the liquid inlet end of the water pump (10), the bottom of bellows (13) extends to the below of body (1) and fixed cover is equipped with mounting panel (23), the bottom fixed mounting of mounting panel (23) has inductor (24), the bottom inner wall fixed mounting of installation cavity (2) has heavy metal detector (16), the test probe of heavy metal detector (16) runs through one side inner wall of installation cavity (2) and extends to in catch basin (17).
2. The water environment heavy metal on-line monitoring device according to claim 1, characterized in that two foam blocks (19) are symmetrically and fixedly arranged at the bottom of the floating body (1).
3. The water environment heavy metal online monitoring device according to claim 1, characterized in that a water pipe (18) is fixedly connected to the bottom of the floating body (1), an electromagnetic valve (20) is arranged on the water pipe (18), and the top of the water pipe (18) penetrates through the floating body (1) and extends into the water storage tank (17).
4. The on-line monitoring device for heavy metals in a water environment according to claim 1, characterized in that the power assembly comprises two fixing plates (4) which are symmetrically and fixedly connected with the inner wall of the bottom of the installation cavity (2), one side of the two fixing plates (4) close to each other is rotatably connected with a same worm (9), a worm wheel (14) meshed with the worm (9) is fixedly sleeved on the outer wall of the rotating roller (8), the inner wall of the bottom of the installation cavity (2) is fixedly provided with the first motor (3), and one end of the worm (9) penetrates through the corresponding fixing plate (4) and extends to one side of the fixing plate (4) and is fixedly connected with an output shaft of the first motor (3).
5. The on-line monitoring device for heavy metal in water environment according to claim 1, wherein the driving assembly comprises a mounting groove (7) formed on the rotating roller (8), a second motor (6) is fixedly arranged in the mounting groove (7), an output shaft of the second motor (6) extends to the outer side of the rotating roller (8) through the inner wall of one side of the mounting groove (7) and is fixedly sleeved with a propeller (5).
6. The on-line monitoring device for heavy metal in water environment according to claim 1, characterized in that a sliding rod (11) is connected to the floating body (1) in a sliding manner, the bottom of the sliding rod (11) is fixedly connected with the top of the mounting plate (23), an electric push rod (12) is fixedly arranged on the top of the floating body (1), and the output end of the electric push rod (12) is fixedly connected with the top of the sliding rod (11) through a connecting block.
7. The on-line monitoring device for heavy metal in water environment according to claim 1, wherein a filter head (25) is fixedly connected to the bottom of the corrugated pipe (13), and the top of the filter head (25) is fixedly connected to the bottom of the mounting plate (23).
8. The water environment heavy metal online monitoring device according to claim 1, characterized in that a controller (15) is fixedly installed on an inner wall of one side of the installation cavity (2), and the controller (15) is electrically connected with the first motor (3), the second motor (6), the water pump (10), the electric push rod (12) and the electromagnetic valve (20).
9. The water environment heavy metal online monitoring device according to claim 1, characterized in that a strip-shaped plate (21) is fixedly connected to the top of the floating body (1), a transmitter (22) is fixedly connected to the top of one side of the strip-shaped plate (21), the transmitter (22) is composed of a receiving end and a transmitting end, the transmitter (22) is electrically connected to the inductor (24) and the heavy metal detector (16), and a storage battery (26) is arranged on the inner wall of the top of the installation cavity (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298352.4U CN216916221U (en) | 2021-12-24 | 2021-12-24 | Water environment heavy metal on-line monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202123298352.4U CN216916221U (en) | 2021-12-24 | 2021-12-24 | Water environment heavy metal on-line monitoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216916221U true CN216916221U (en) | 2022-07-08 |
Family
ID=82255324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202123298352.4U Expired - Fee Related CN216916221U (en) | 2021-12-24 | 2021-12-24 | Water environment heavy metal on-line monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216916221U (en) |
-
2021
- 2021-12-24 CN CN202123298352.4U patent/CN216916221U/en not_active Expired - Fee Related
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220708 |