CN115468630A - Wireless remote-transmission explosion-proof liquid level meter - Google Patents

Wireless remote-transmission explosion-proof liquid level meter Download PDF

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Publication number
CN115468630A
CN115468630A CN202211410859.0A CN202211410859A CN115468630A CN 115468630 A CN115468630 A CN 115468630A CN 202211410859 A CN202211410859 A CN 202211410859A CN 115468630 A CN115468630 A CN 115468630A
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CN
China
Prior art keywords
rod
liquid level
explosion
fixedly connected
dead lever
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Granted
Application number
CN202211410859.0A
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Chinese (zh)
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CN115468630B (en
Inventor
臧鹏
张强
盖海峰
刘爱强
王景峰
朱临丰
张秀波
高煜
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Shandong Mingcheng Petroleum Equipment Co ltd
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Shandong Mingcheng Petroleum Equipment Co ltd
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Priority to CN202211410859.0A priority Critical patent/CN115468630B/en
Publication of CN115468630A publication Critical patent/CN115468630A/en
Application granted granted Critical
Publication of CN115468630B publication Critical patent/CN115468630B/en
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/64Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements
    • G01F23/72Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means
    • G01F23/74Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats of the free float type without mechanical transmission elements using magnetically actuated indicating means for sensing changes in level only at discrete points
    • B08B1/165
    • B08B1/32
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01FMEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F23/00Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
    • G01F23/30Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats
    • G01F23/76Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by floats characterised by the construction of the float

Abstract

The invention relates to the technical field of liquid level meters, in particular to a wireless remote transmission explosion-proof liquid level meter. The problem that the inserted rod (the rod with the sliding floating ball) is soaked in oil for a long time, impurities such as paraffin are attached to the inserted rod, and resistance is increased when the floating ball moves is solved. The utility model provides an explosion-proof level gauge of wireless teletransmission, including the landing leg, the landing leg rigid coupling has the oil storage casing, the oil storage casing is provided with inlet and leakage fluid dram, oil storage casing run through formula rigid coupling has the dead lever, the material of dead lever is the alloy steel sheet, the upper end rigid coupling of dead lever has signal transmitter, signal transmitter is connected with teletransmission control receiving terminal electricity, be provided with one row of tongue tube of being connected with the signal transmitter electricity in the dead lever, the tongue tube is connected with the signal transmitter electricity, the dead lever cover is equipped with magnetism annular float and is provided with the clearance rather than. According to the invention, the contact area of the magnetic annular floater and the fixed rod is reduced, the resistance of the magnetic annular floater during movement is reduced, and the accuracy of liquid level detection is increased.

Description

Wireless remote-transmission explosion-proof liquid level meter
Technical Field
The invention relates to the technical field of liquid level meters, in particular to a wireless remote transmission explosion-proof liquid level meter.
Background
The liquid level meter is an instrument for detecting liquid level change in real time, and comprises a floating ball type liquid level meter, a magnetic turning plate liquid level meter and the like, wherein the working principle of the floating ball type liquid level meter is as follows: the magnetic floating ball is changed synchronously with the liquid level, so that the reed switch corresponding to the floating ball is attracted, and signals are transmitted out to reflect the height of the liquid level.
In the process of detecting the liquid level of petroleum in an oil tank, the floating ball type liquid level meter has the following problems that because an inserted bar (a rod with a sliding floating ball) is soaked in the petroleum for a long time, impurities such as paraffin are attached to the inserted bar, in the process that the floating ball rises, if the inner side surface of the floating ball is in contact with the outer side surface of the inserted bar, the impurities on the inserted bar block the movement of the floating ball, so that the position of the floating ball is lower than the position of the actual liquid level, in the process that the floating ball moves downwards, the position of the floating ball is higher than the height of the actual liquid level, and the impurities such as the paraffin are not cleaned on the inserted bar, so that the error between the detected liquid level and the actual liquid level is caused.
Disclosure of Invention
In order to solve the technical problem, the invention provides a wireless remote transmission explosion-proof liquid level meter with an impurity cleaning function.
A wireless remote transmission explosion-proof liquid level meter comprises a fixed rod arranged in an oil storage shell, wherein the fixed rod is fixedly connected to the oil storage shell in a penetrating mode, a signal transmitter is fixedly connected to the upper end of the fixed rod and is electrically connected with a remote transmission control receiving end, a row of reed pipes electrically connected with the signal transmitter are arranged in the fixed rod and are electrically connected with the signal transmitter, and a magnetic annular floater is sleeved on the fixed rod and is provided with a gap;
one side circumference that magnetism annular float is close to the dead lever is provided with spherical groove, and the spherical groove internal rotation of magnetism annular float is connected with the ball, and has the clearance between ball and the dead lever for reduce the frictional force between magnetism annular float and the dead lever.
Preferably, a counterweight ball is fixedly connected to the lower side surface of the magnetic annular floater in the circumferential direction through a support rod, and the axis of the magnetic annular floater is kept perpendicular to the petroleum liquid level.
Preferably, a buoyancy ring is sleeved on the outer side surface of the magnetic annular floater, a gap is reserved between the buoyancy ring and the magnetic annular floater, a first L-shaped rod and a second L-shaped rod are arranged on the circumference of the buoyancy ring, and scraping blades are fixedly connected to one ends, close to the fixing rod, of the first L-shaped rod and one end, close to the fixing rod, of the second L-shaped rod respectively.
Preferably, the inner side face of the scraping piece is arranged to be an arc-shaped face attached to the outer side face of the fixing rod, and four circumferential side faces of the scraping piece are arranged to be inclined faces.
Preferably, the floating ring is fixedly connected with symmetrically distributed limiting rings, the fixing rod is fixedly connected with symmetrically distributed spiral rods through the supporting rod, and the spiral rods penetrate through the adjacent limiting rings and are in sliding connection with the limiting rings.
Preferably, the first L-shaped rod is fixedly connected with a buffer shell through a supporting rod, the first L-shaped rod is embedded with an electromagnet push rod electrically connected with the remote transmission control receiving end, the telescopic end of the electromagnet push rod penetrates through the upper portion of the buffer shell and is in sliding connection with the upper portion of the buffer shell, the lower portion of the buffer shell is in penetrating sliding connection with a slide rod, and the upper end of the slide rod is fixedly connected with a sliding disc.
Preferably, the sliding disc is circumferentially provided with a through hole, and a spring is fixedly connected between the upper end of the sliding rod and the telescopic end of the electromagnet push rod.
Preferably, the damping oil is filled in the buffer housing.
Preferably, the lower end of the sliding rod is fixedly connected with a circular table block, the circular table block is sleeved on the outer side face of the fixing rod, a gap exists between the circular table block and the fixing rod, the magnetic annular floater is connected with a guide wheel through a support in a circumferential rotating mode, and the guide wheel is matched with the outer side face of the circular table block.
Compared with the prior art, the invention has the following advantages: according to the invention, the contact area of the magnetic annular floater and the fixed rod is reduced, the resistance of the magnetic annular floater during movement is reduced, the accuracy of liquid level detection is improved, the influence of impurities such as paraffin on the movement of the magnetic annular floater is reduced by scraping the impurities such as paraffin on the outer side surface of the fixed rod, the influence of other resistances is eliminated by centering the magnetic annular floater, so that the magnetic annular floater accurately reflects the real-time liquid level condition, and the magnetic annular floater slowly moves upwards or downwards in the process of adjusting the central axis of the magnetic annular floater, so that the influence of fluctuation on the liquid level caused by the magnetic annular floater floating too fast on the detection of the reed switch is avoided.
Drawings
Fig. 1 is a state diagram of the present invention in use.
Fig. 2 is a sectional view showing a state of use of the present invention.
Fig. 3 is a sectional view showing a three-dimensional structure of the fixing rod of the present invention.
Fig. 4 is a partial perspective view of the present invention.
Fig. 5 is a sectional view of the buffering shell in a three-dimensional structure.
Fig. 6 is a sectional view showing a three-dimensional structure of the buoyant ring of the present invention.
Wherein the figures include the following reference numerals: 1-supporting legs, 2-oil storage shells, 3-fixing rods, 4-signal transmitters, 5-magnetic annular floaters, 6-rolling balls, 7-counterweight balls, 8-buoyancy rings, 9-first L-shaped rods, 10-second L-shaped rods, 11-scraping blades, 12-limiting rings, 13-spiral rods, 14-buffer shells, 15-electromagnet push rods, 16-sliding rods, 17-sliding discs, 18-springs, 19-circular table blocks and 20-guide wheels.
Detailed Description
Embodiments of the present invention will be described below with reference to the drawings.
A wireless remote transmission explosion-proof liquid level meter is disclosed, as shown in figures 1-3, and comprises a fixed rod 3 arranged in an oil storage shell 2, the fixed rod 3 is connected with the oil storage shell 2 through a penetrating bolt, the bottom of the oil storage shell 2 is connected with a supporting leg 1 through a bolt, the oil storage shell 2 is provided with a liquid inlet and a liquid outlet, the fixed rod 3 is made of an explosion-proof material, internal parts of the fixed rod 3 are protected, a signal transmitter 4 is installed at the upper end of the fixed rod 3, the signal transmitter 4 is electrically connected with a remote transmission control receiving end, a row of reed pipes electrically connected with the signal transmitter 4 are arranged in the fixed rod 3, the reed pipes are electrically connected with the signal transmitter 4, along with the movement of the magnetic annular floater 5, the reed pipes adjacent to the magnetic annular floater 5 are attracted by magnetism, so that the corresponding liquid level position is converted into an electric signal to be transmitted to the signal transmitter 4, the fixed rod 3 is sleeved with the magnetic annular floater 5 and provided with a gap, the contact position between the magnetic annular floater 5 and the fixed rod 3 is an arc, and the contact area between the magnetic annular floater 5 and the fixed rod 3 is reduced.
As shown in fig. 3, a spherical groove is circumferentially arranged on one side, close to the fixing rod 3, of the magnetic annular float 5, a ball 6 is rotationally connected in the spherical groove of the magnetic annular float 5, a gap exists between the ball 6 and the fixing rod 3, and the gap is used for reducing friction force between the magnetic annular float 5 and the fixing rod 3, so that resistance when the magnetic annular float 5 moves is reduced, meanwhile, the contact area between the magnetic annular float 5 and the fixing rod 3 is reduced, and influence of paraffin on the magnetic annular float 5 is reduced.
As shown in FIG. 3, the lower side surface of the magnetic annular floater 5 is welded with the counterweight balls 7 through the circumferential direction of the support rod, so that the axis of the magnetic annular floater 5 is kept perpendicular to the liquid level of petroleum, and the phenomenon that the magnetic annular floater 5 deflects in the floating process to cause deviation in liquid level detection is avoided.
As shown in fig. 4, a buoyancy ring 8 is sleeved on the outer side surface of the magnetic annular float 5, and a gap is reserved between the buoyancy ring 8 and the buoyancy ring, a first L-shaped rod 9 is fixedly connected to the upper side surface of the buoyancy ring 8 in the circumferential direction, a second L-shaped rod 10 is fixedly connected to the lower side surface of the buoyancy ring 8 in the circumferential direction, wiper blades 11 are welded to one ends, close to the fixing rods 3, of the first L-shaped rod 9 and the second L-shaped rod 10 respectively, the buoyancy ring 8 drives the wiper blades 11 to move through the first L-shaped rod 9 and the second L-shaped rod 10, paraffin impurities on the outer side surface of the fixing rods 3 are cleaned, the adhesion amount of paraffin on the fixing rods 3 is reduced, the inner side surface of the wiper blades 11 is set to be an arc-shaped surface attached to the outer side surface of the fixing rods 3, four circumferential side surfaces of the wiper blades 11 are set to be inclined surfaces, and the side accumulation amount of paraffin and impurities on the wiper blades 11 is reduced.
As shown in fig. 4, the floating ring 8 is fixedly connected with two symmetrical limiting rings 12, the fixing rod 3 is fixedly connected with symmetrically distributed spiral rods 13 through supporting rods, the spiral rods 13 penetrate through the adjacent limiting rings 12 and are in sliding connection with the adjacent limiting rings 12, the floating ring 8 rotates under the limiting of the spiral rods 13, and the scraping blades 11 are used for rotatably cleaning paraffin impurities on the outer side surface of the fixing rod 3.
As shown in fig. 5, a buffer housing 14 is welded on the first L-shaped rod 9 through a support rod, damping oil is filled in the buffer housing 14, an electromagnet push rod 15 electrically connected with a remote transmission control receiving end is embedded in the first L-shaped rod 9, a telescopic end of the electromagnet push rod 15 penetrates through the upper portion of the buffer housing 14 and is in sliding connection with the buffer housing, the telescopic end of the electromagnet push rod 15 is in sealing fit with the buffer housing 14, a slide rod 16 penetrates through the lower portion of the buffer housing 14 and is in sliding connection with the lower portion of the buffer housing 14, and a slide plate 17 is fixedly connected to the slide rod 16.
As shown in fig. 5, a through hole is circumferentially formed in the sliding disc 17, and a spring 18 is fixedly connected between the upper end of the sliding rod 16 and the telescopic end of the electromagnet push rod 15, and is matched with damping oil in the buffer housing 14 to buffer the sliding disc 17.
As shown in fig. 6, the lower end of the sliding rod 16 is connected with a circular truncated cone block 19 through a bolt, the circular truncated cone block 19 is sleeved on the outer side surface of the fixing rod 3, a gap exists between the circular truncated cone block and the outer side surface of the fixing rod 3, the magnetic annular floater 5 is connected with a guide wheel 20 through a support in a circumferential rotation mode, the guide wheel 20 is matched with the outer side surface of the circular truncated cone block 19, the outer side surface of the circular truncated cone block 19 is in contact with the guide wheel 20, the guide wheel 20 moves the central axis of the magnetic annular floater 5 towards the central line axis of the fixing rod 3 through the support, and finally the central line axes of the magnetic annular floater and the fixing rod coincide.
This level gauge detects the interior liquid level of oil storage casing 2, magnetism annular float 5 and buoyancy ring 8's position changes along with the change of liquid level, initial condition (dead lever 3 does not have paraffin impurity) down magnetism annular float 5 and buoyancy ring 8's central point is in the coplanar, along with magnetism annular float 5's removal, the tongue tube adjacent with magnetism annular float 5 receives the magnetism actuation, thereby turn into signal of telecommunication to signal transmitter 4 to the liquid level position that corresponds, signal transmitter 4 converts the signal of telecommunication into 20 mA's standard current signal and sends to the teletransmission control receiving terminal, operating personnel knows the particular case of the interior liquid level of oil storage casing 2 through the current signal of teletransmission control receiving terminal, the teletransmission of petroleum liquid level has been realized, because the material of dead lever 3 is the alloy steel plate, avoid taking place the explosion in the oil storage casing 2 and cause the harm to tongue tube and signal transmitter 4.
Because the fixed rod 3 is soaked in oil for a long time, impurities such as paraffin can be formed on the outer side surface of the fixed rod 3, in the moving process of the magnetic annular floater 5, because a gap exists between the magnetic annular floater 5 and the fixed rod 3, the contact area between the magnetic annular floater 5 and the fixed rod 3 is reduced, and then the ball 6 is matched, so that the resistance of the magnetic annular floater 5 in the moving process is reduced, the influence of the paraffin on the magnetic annular floater 5 is reduced, and the counterweight ball 7 ensures that the axis of the magnetic annular floater 5 is vertical to the liquid level of the oil, the phenomenon that the magnetic annular floater 5 deflects in the floating process to cause deviation of liquid level detection is avoided, in the moving process of the buoyancy ring 8, because of the limiting of the two spiral rods 13, the limiting ring 12 drives the buoyancy ring 8 to rotate, the buoyancy ring 8 drives the scraper blade 11 to rotate through the first L-shaped rod 9 and the second L-shaped rod 10, the paraffin impurities on the outer side surface of the fixed rod 3 are cleaned in a rotating mode, the adhesion amount of the paraffin on the fixed rod 3 is reduced, because the inner side surface of the scraper blade 11 is set to be an arc-shaped surface which is attached to the outer side surface of the fixed rod 3, and four circumferential side surfaces of the scraper blade 11 are set to be attached to the inclined surface of the fixed rod 3, and the impurities such as an inclined surface, and the paraffin in the scraping process of the paraffin, and the paraffin impurities such as the paraffin in the paraffin is reduced in the scraping process of the scraper.
Because the central axis coincidence of magnetic annular float 5 unable assurance its central axis and dead lever 3 for ball 6 contacts with the lateral surface of dead lever 3 (as long as both contacts will have the resistance) from time to time, thereby lead to the deviation to appear in the actual position of magnetic annular float 5 and ideal position (ball 6 and dead lever 3 contactless or both do not have the resistance), lead to the long-range testing result of operating personnel error, for correcting above-mentioned error, through the position of adjustment magnetic annular float 5 central line axis, concrete operation is as follows: an operator starts the three electromagnet push rods 15 through a remote control receiving end, taking one electromagnet push rod 15 as an example, the electromagnet push rod 15 extrudes the slide rod 16 through the spring 18, as the telescopic end of the electromagnet push rod 15 moves rapidly, damping oil at the lower part of the buffer shell 14 flows upwards through a through hole of the slide disk 17, the resistance of the slide disk 17 is increased, and the delay of the spring 18 is matched, so that the slide rod 16 moves downwards slowly, the slide rod 16 drives the circular platform block 19 to move downwards, the outer side surface of the circular platform block 19 is in contact with the guide wheel 20, the guide wheel 20 moves the central axis of the magnetic annular floater 5 towards the central axis of the fixed rod 3 through the bracket, and finally the central axis of the two is overlapped, the final position of the circular platform block 19 can enable the magnetic annular floater 5 to move downwards to be lower than an actual detection position, and then the electromagnet push rod 15 is started to reset through the remote control receiving end, like the above-mentioned start-up process, round platform piece 19 slowly upwards moves, and magnetism annular float 5 receives the vertical upwards movement of buoyancy for leading wheel 20 hugs closely the medial surface of round platform piece 19, and after electro-magnet push rod 15 resets, operating personnel knows the particular case of liquid level in the oil storage casing 2 this moment through the signal that signal transmitter 4 spreads, to sum up through handling magnetism annular float 5 between two parties, avoid ball 6 and dead lever 3 contact, eliminate the influence of other resistances, make magnetism annular float 5 accurate reaction go out real-time liquid level condition, simultaneously, carry out the in-process of adjusting to magnetism annular float 5's the central axis, magnetism annular float 5 upwards or downwards move slowly, avoided magnetism annular float 5 to float and cause undulant to the liquid level too soon, influence the detection of tongue tube.
Because the scraping blade 11 is tightly attached to the outer side surface of the fixed rod 3, the central points of the magnetic annular floater 5 and the buoyancy ring 8 are in the same plane for a long time, but the distance between the circular platform block 19 and the guide wheel 20 is far greater than the difference between the magnetic annular floater 5 and the buoyancy ring 8 in the vertical direction, and the centering correction of the circular platform block 19 on the magnetic annular floater 5 through the guide wheel 20 cannot be influenced.
Although embodiments of the present invention have been shown and described, it would be appreciated by those skilled in the art that changes may be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the claims and their equivalents.

Claims (9)

1. The utility model provides an explosion-proof level gauge of wireless teletransmission, including setting up dead lever (3) in oil storage casing (2), its characterized in that: the fixing rod (3) is fixedly connected to the oil storage shell (2) in a penetrating mode, the upper end of the fixing rod (3) is fixedly connected with a signal emitter (4), the signal emitter (4) is in signal connection with a remote transmission control receiving end, a row of reed pipes electrically connected with the signal emitter (4) are arranged in the fixing rod (3), the reed pipes are electrically connected with the signal emitter (4), and the fixing rod (3) is sleeved with a magnetic annular floater (5) and is provided with a gap;
one side circumference that magnetism annular float (5) are close to dead lever (3) is provided with spherical groove, and the spherical groove internal rotation of magnetism annular float (5) is connected with ball (6), and has the clearance between ball (6) and dead lever (3) for reduce the frictional force between magnetism annular float (5) and dead lever (3).
2. The wireless remote transmission explosion-proof liquid level meter according to claim 1, characterized in that: the lower side surface of the magnetic annular floater (5) is fixedly connected with a counterweight ball (7) through a support rod in the circumferential direction, and the axis of the magnetic annular floater (5) is kept vertical to the petroleum liquid level.
3. The wireless remote transmission explosion-proof liquid level meter according to claim 1, characterized in that: the outer side face of the magnetic annular floater (5) is sleeved with a buoyancy ring (8) and a gap is reserved between the buoyancy ring and the buoyancy ring, a first L-shaped rod (9) and a second L-shaped rod (10) are circumferentially arranged on the buoyancy ring (8), and scraping blades (11) are fixedly connected to one ends, close to the fixing rods (3), of the first L-shaped rod (9) and one ends, close to the fixing rods (3), of the second L-shaped rod (10) respectively.
4. The wireless remote explosion-proof liquid level meter according to claim 3, characterized in that: the medial surface of doctor-bar (11) sets up the arcwall face of laminating into with the lateral surface of dead lever (3), and four circumference sides of doctor-bar (11) set up to the inclined plane, avoid the impurity of four circumference sides of doctor-bar (11) to pile up.
5. The wireless remote explosion-proof liquid level meter according to claim 4, characterized in that: the buoyancy ring (8) is fixedly connected with symmetrically distributed limiting rings (12), the fixed rod (3) is fixedly connected with symmetrically distributed spiral rods (13) through supporting rods, and the spiral rods (13) penetrate through the adjacent limiting rings (12) and are in sliding connection with the adjacent limiting rings.
6. The wireless remote explosion-proof liquid level meter according to claim 4, characterized in that: a buffering shell (14) is fixedly connected to the first L-shaped rod (9) through a supporting rod, an electromagnet push rod (15) electrically connected with the remote transmission control receiving end is embedded into the first L-shaped rod (9), the telescopic end of the electromagnet push rod (15) penetrates through the upper portion of the buffering shell (14) and is in sliding connection with the buffering shell, a sliding rod (16) is connected to the lower portion of the buffering shell (14) in a penetrating mode in a sliding mode, and a sliding disc (17) is fixedly connected to the upper end of the sliding rod (16).
7. The wireless remote explosion-proof liquid level meter according to claim 6, characterized in that: through holes are arranged on the circumference of the sliding disk (17), and a spring (18) is fixedly connected between the upper end of the sliding rod (16) and the telescopic end of the electromagnet push rod (15).
8. The wireless remote transmission explosion-proof liquid level meter according to claim 7, characterized in that: damping oil is filled in the buffer shell (14).
9. The wireless remote transmission explosion-proof liquid level meter according to claim 7, characterized in that: the lower end of the sliding rod (16) is fixedly connected with a circular table block (19), the circular table block (19) is sleeved on the outer side face of the fixing rod (3), a gap exists between the outer side face and the fixing rod, the magnetic annular floater (5) is connected with a guide wheel (20) in a circumferential rotating mode through a support, and the guide wheel (20) is matched with the outer side face of the circular table block (19).
CN202211410859.0A 2022-11-11 2022-11-11 Wireless remote-transmission explosion-proof liquid level meter Active CN115468630B (en)

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CN115468630B CN115468630B (en) 2023-01-17

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Publication number Priority date Publication date Assignee Title
CN115655421A (en) * 2022-12-14 2023-01-31 江苏华骋科技有限公司 Resistance sensor capable of improving sampling precision

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CN216645528U (en) * 2022-01-10 2022-05-31 连云港航美浮球制造有限公司 Floating ball liquid level meter capable of improving flexibility of floating ball
CN115178713A (en) * 2022-06-17 2022-10-14 中熔智能装备(江苏)有限公司 Liquid level detection device for sealed aluminum liquid bag
CN115235584A (en) * 2022-06-07 2022-10-25 安徽维思克自动化仪表有限公司 Anti-blocking mechanism of magnetic turning plate liquid level meter

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Publication number Priority date Publication date Assignee Title
JP2015219063A (en) * 2014-05-15 2015-12-07 株式会社日本自動車部品総合研究所 Liquid level detector
EP3379211A1 (en) * 2015-11-18 2018-09-26 Dalian Jiaxin Electromechanical Instrument. Co. Ltd. Ball float type liquidometer with vernier display
CN208968628U (en) * 2018-11-23 2019-06-11 福建闽仪自动化设备有限公司 A kind of chemical industry anti-corrosion floating-ball fluid level transmitter
CN111750957A (en) * 2020-06-03 2020-10-09 合肥左心科技有限公司 Floating ball liquid level meter capable of improving flexibility of floating ball
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Publication number Priority date Publication date Assignee Title
CN115655421A (en) * 2022-12-14 2023-01-31 江苏华骋科技有限公司 Resistance sensor capable of improving sampling precision

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