CN111707329B - Explosion-proof type capacitance level meter - Google Patents
Explosion-proof type capacitance level meter Download PDFInfo
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- CN111707329B CN111707329B CN202010501552.6A CN202010501552A CN111707329B CN 111707329 B CN111707329 B CN 111707329B CN 202010501552 A CN202010501552 A CN 202010501552A CN 111707329 B CN111707329 B CN 111707329B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating 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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/26—Indicating 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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields
- G01F23/263—Indicating 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 measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of capacity or inductance of capacitors or inductors arising from the presence of liquid or fluent solid material in the electric or electromagnetic fields by measuring variations in capacitance of capacitors
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Abstract
The invention discloses an explosion-proof capacitive liquid level meter, which comprises a capacitive liquid level meter main body, wherein the lower end of the capacitive liquid level meter main body is fixedly connected with a hollow connecting section through a first limiting component, a first electrode tube is vertically arranged on the lower side of the hollow connecting section, a second electrode tube is sleeved outside the first electrode tube, the first electrode tube and the second electrode tube are connected with the hollow connecting section through a second limiting component, a first flange is fixedly sleeved on the hollow connecting section, a protective sleeve is sleeved outside the second electrode tube, a plurality of penetrating liquid inlet holes are uniformly distributed on the lower end face of the protective sleeve, a second flange is fixedly sleeved on the upper end of the protective sleeve and matched with the first flange, an installation component for fixing is arranged on the first flange, and a ventilation component communicated with the second electrode tube is arranged on the side wall of the protective sleeve. The capacitance type liquid level meter disclosed by the invention has a higher explosion-proof effect, is more convenient to install and disassemble, is convenient to use, and is convenient to maintain and replace.
Description
Technical Field
The invention belongs to the technical field of capacitive liquid level meters; in particular to an explosion-proof capacitance liquid level meter.
Background
The capacitance type liquid level meter is a device for converting the position change of a measured object into capacitance, has the advantages of simple structure, high resolution, reliable work, fast dynamic response and the like, can perform non-contact measurement and can work in more severe environments, and the conventional capacitance type liquid level meter performs measurement by two electrodes in contact with the measured object. The existing capacitance type liquid level meter adopts an analog circuit, and because of the existence of impurities in a measured object and other environmental factors, errors are easy to occur, and even more, because of the influence of the impurities in the measured object and the properties of the measured object, the damage phenomenon is easy to occur.
The existing capacitive liquid level meter basically has the advantages that the electrode directly contacts with a measured object, the safety mode comprises three modes of a flange plate, a thread and a clamping connection, firstly, the internal stress and impurities of the measured object can generate great influence on the electrode, the damage phenomenon is easy to occur, and the effect of a common installation mode on impact force is not high enough; meanwhile, the existing capacitive liquid level meter is fixed in structure, and when the capacitive liquid level meter is damaged, a single part is inconvenient to replace and maintain, so that the whole capacitive liquid level meter cannot be used easily and is wasted.
Disclosure of Invention
The invention aims to provide an explosion-proof capacitive liquid level meter, which comprises a capacitive liquid level meter main body, wherein the lower end of the capacitive liquid level meter main body is fixedly connected with a hollow connecting section through a first limiting component, a first electrode tube is vertically arranged at the lower side of the hollow connecting section, a second electrode tube is sleeved outside the first electrode tube, the first electrode tube and the second electrode tube are connected with the hollow connecting section through a second limiting component, the first electrode tube and the second electrode tube are both electrically connected with the capacitive liquid level meter main body, a first flange plate is fixedly sleeved on the hollow connecting section, a protective sleeve is sleeved outside the second electrode tube, a plurality of penetrating liquid inlet holes are uniformly distributed on the lower end surface of the protective sleeve, the liquid inlet holes are communicated with a cavity formed between the second electrode tube and the first electrode tube, a second flange plate is fixedly sleeved on the upper end of the protective sleeve, the second flange plate is matched with the first flange plate, the first flange plate is provided with an installation assembly for fixing, a plurality of annular damping blocks are uniformly and fixedly arranged in the protective sleeve, the annular damping blocks are all sleeved on the second electrode tube, and the side wall of the protective sleeve is provided with a ventilation assembly communicated with the second electrode tube.
Further, first spacing subassembly is including setting up the recess of terminal surface under the capacitanc level gauge main part, the recess matches with the cavity linkage segment, evenly be equipped with the through-hole of a plurality of intercommunication recesses on the capacitanc level gauge main part lateral wall, the matching is equipped with first fastening bolt in the through-hole, and is a plurality of first fastening bolt all with cavity linkage segment threaded connection, capacitanc level gauge main part external fixation cover is equipped with first seal ring, first seal ring offsets with first ring flange.
Further, the spacing subassembly of second is including evenly setting up a plurality of first screw holes on cavity linkage segment bottom, and is a plurality of the downthehole second fastening bolt that all matches of first screw hole is equipped with, and is a plurality of second fastening bolt all with first electrode pipe threaded connection, be equipped with a plurality of second screw holes on the cavity linkage segment bottom, it is a plurality of the downthehole matching of second screw is equipped with third fastening bolt, and is a plurality of third fastening bolt all with second electrode pipe threaded connection, the terminal surface is equipped with the sealed holding tank that matches with first electrode pipe and second electrode pipe under the cavity linkage segment.
Furthermore, the upper ends of the first electrode tube and the second electrode tube are fixedly sleeved with second sealing gaskets, the second sealing gaskets are abutted to the hollow connecting section and are fixedly connected with the hollow connecting section through a plurality of fourth fastening bolts.
Further, the installation component is including evenly setting up a plurality of driven gear at first ring flange upside, and is a plurality of driven gear corresponds with a plurality of mounting hole positions on the first ring flange respectively, driven gear rotates with first ring flange to be connected, the last round hole that matches with the mounting hole that is equipped with of driven gear, the matching is equipped with the screw thread post in the round hole, evenly fixed a plurality of sliders that set up on the round hole inner wall, be equipped with a plurality of spouts that match with the slider on the screw thread post lateral wall, capacitanc level gauge main part overcoat is equipped with the annular piece, the annular piece rotates with first ring flange to be connected, evenly be equipped with a plurality of tooth's grooves on the annular lateral wall of annular piece, it is a plurality of driven gear all is connected with the meshing of annular piece, a plurality of short columns of even fixedly connected with are encircleed to the annular piece up end.
Further, the outer slip cap of first ring flange is equipped with sealed hoop, the coaxial fixedly connected with fixed block in screw thread post upper end, it is equipped with the connecting plate to rotate the cover on the fixed block, connecting plate and sealed hoop fixed connection.
Furthermore, the ventilation assembly comprises a first ventilation port arranged on the protective sleeve, a second ventilation port corresponding to the first ventilation port is arranged on the second electrode tube, a ventilation tube is arranged in the first ventilation port in a matched mode and runs through the second ventilation port, external threads are arranged on the outer wall of the ventilation tube, internal threads matched with the external threads are arranged on the inner walls of the first ventilation port and the second ventilation port, and one end of the ventilation tube extends to the outside of the first ventilation port and is fixedly provided with a hexagonal prism block.
Furthermore, a wear-resistant rubber block is fixedly arranged on the inner bottom wall of the protective sleeve, two protective grooves matched with the first electrode tube and the second electrode tube are formed in the wear-resistant rubber block, and a plurality of through holes matched with the liquid inlet hole are formed in the wear-resistant rubber block.
Further, the explosion-proof type capacitance liquid level meter comprises the following using steps:
1) when the capacitance type liquid level meter main body is installed, the protective sleeve is sleeved on the second electrode tube, meanwhile, the second flange plate on the protective sleeve is abutted against and corresponds to the first flange plate, at the moment, the wear-resistant rubber block on the bottom wall of the protective sleeve abuts against the first electrode tube and the second electrode tube, the protective sleeve plays an explosion-proof role, and the annular damping blocks in the protective sleeve play a shock absorption protection role;
2) at the moment, the first vent hole in the protective sleeve corresponds to the second vent hole in the second electrode tube in position, the vent pipe is driven to rotate through the hexagonal prism block, and the vent pipe is screwed in and sealed by utilizing the matching relationship between the external thread and the internal thread, so that the space between the second electrode tube and the first electrode tube is ventilated;
3) inserting the protective sleeve into a tank body and other containers needing to measure liquid level, wherein the first flange plate and the second flange plate are abutted against and correspond to flange plates on the containers, and then rotating the annular block through a plurality of short columns for installation;
4) the ring block drives a plurality of driven gears to rotate when rotating, the driven gears rotate to drive the threaded columns to rotate under the action of the sliding blocks and the sliding grooves, and the threaded columns are screwed into the second flange plate and the flange plate on the container to complete fixation;
5) the threaded columns can move when rotating, and the plurality of threaded columns drive the plurality of connecting plates to move when moving, so that the sealing hoops are driven to move, and the first flange plate, the second flange plate and the container upper flange plate are clamped tightly, so that the sealing and fixing effects are achieved;
6) when the capacitance type liquid level meter main body needs to be disassembled, the protective sleeve is disassembled, then the first fastening bolts on the side wall of the capacitance type liquid level meter main body are screwed off, so that the hollow connecting section is disassembled, then the second fastening bolts and the third fastening bolts in the hollow connecting section are screwed off, the first electrode tube and the second electrode tube can be disassembled, and the integral disassembly is completed;
7) when the device is used, the first sealing washer and the two second sealing washers have a sealing effect and have a certain explosion-proof effect.
The invention has the beneficial effects that:
1. the device is provided with a protective sleeve, the protective sleeve is used for covering a measuring electrode end of the liquid level meter, meanwhile, the measured object is not influenced to contact with the measuring electrode, the protective sleeve is convenient to mount and dismount, the protective sleeve is matched with a plurality of annular damping blocks and wear-resistant rubber blocks to protect the electrode tube, the situation that sundries in the measured object and other factors in a measured object container damage the electrode tube is avoided, and the protective sleeve has a high protective effect on damage factors such as impact and the like;
2. in the device, the main body of the capacitance type liquid level meter, the hollow connecting section, the first electrode tube and the second electrode tube can be disassembled, so that the capacitance type liquid level meter is convenient to maintain and replace when a problem occurs, is convenient to use, is provided with more sealing gaskets to play a role in high sealing, and has a buffering function to protect the whole body;
3. capacitive level gauge among the device, the ring flange is established to the equal fixed cover on the protective sleeve section of thick bamboo, the ring flange corresponds and matches with the ring flange on the container, when needing to install and dismantle, through rotating the annular piece, can drive a plurality of driven gear and rotate, realize the screw in of a plurality of screw posts or screw out, monolithic stationary is realized in single operation, it is comparatively convenient to install and dismantle, and can drive sealed hoop and remove when carrying out the screw post removal, sealed hoop has at first increased flange joint position's leakproofness, further sealed hoop can also improve hookup location's steadiness, explosion-proof has, guarantee integrated device's steadiness.
Drawings
In order to facilitate understanding for those skilled in the art, the present invention will be further described with reference to the accompanying drawings.
FIG. 1 is a schematic diagram of an overall elevational structure of an explosion-proof capacitive liquid level gauge of the present invention;
FIG. 2 is a schematic diagram of an explosion-proof capacitive liquid level gauge in a general top view configuration;
FIG. 3 is a schematic bottom view of an explosion-proof capacitive liquid level gauge of the present invention;
FIG. 4 is a schematic diagram of the general cross-sectional structure of an explosion-proof capacitive liquid level gauge of the present invention;
FIG. 5 is a schematic structural view of a threaded post and its connecting components of an explosion-proof type capacitive level gauge according to the present invention;
FIG. 6 is a schematic structural diagram of a second limit component of the explosion-proof capacitive liquid level meter according to the invention;
FIG. 7 is a schematic structural view of a vent pipe and its connecting parts of an explosion-proof type capacitive liquid level gauge according to the present invention;
FIG. 8 is a schematic structural diagram of a wear-resistant rubber block of the explosion-proof type capacitive liquid level gauge of the present invention.
In the figure: the capacitance type liquid level meter comprises a capacitance type liquid level meter main body 1, a hollow connecting section 2, a first electrode tube 3, a second electrode tube 4, a first flange plate 5, a protective sleeve 6, a second flange plate 7, an annular damping block 8, a first fastening bolt 9, a first sealing washer 10, a second fastening bolt 11, a third fastening bolt 12, a second sealing washer 13, a fourth fastening bolt 14, a driven gear 15, a threaded column 16, an annular block 18, a short column 19, a sealing hoop 20, a fixing block 21, a connecting plate 22, a vent pipe 23, a hexagonal prism block 24 and a wear-resistant rubber block 25.
Detailed Description
Examples
Referring to fig. 1-8, an explosion-proof capacitive liquid level meter comprises a capacitive liquid level meter body 1, the capacitive liquid level meter body 1 adopts the prior art, and an analog circuit is arranged inside the capacitive liquid level meter body 1, so as to perform measurement, the lower end of the capacitive liquid level meter body 1 is fixedly connected with a hollow connecting section 2 through a first limiting component, the hollow connecting section 2 plays a role of bearing and accommodating components such as wires and the like, and can fix a first electrode tube 3 and a second electrode tube 4, a first electrode tube 3 is vertically arranged at the lower side of the hollow connecting section 2, a second electrode tube 4 is sleeved outside the first electrode tube 3, the first electrode tube 3 and the second electrode tube 4 are connected with the hollow connecting section 2 through a second limiting component, the first electrode tube 3 and the second electrode tube 4 are both electrically connected with the capacitive liquid level meter body 1, a first flange 5 is fixedly sleeved on the hollow connecting section 2, the device adopts the prior flange structure to play a role in fixed installation, a protective sleeve 6 is sleeved outside a second electrode tube 4, the upper end of the protective sleeve 6 is provided with an opening for being sleeved, the lower end of the protective sleeve is sealed for protection, a plurality of liquid inlet holes which penetrate through the protective sleeve 6 are uniformly distributed on the lower end surface of the protective sleeve 6, the liquid inlet holes are communicated with a cavity formed between the second electrode tube 4 and the first electrode tube 3, the object to be detected can enter between the first electrode tube 3 and the second electrode tube 4 during protection, a second flange 7 is fixedly sleeved at the upper end of the protective sleeve 6, the second flange 7 is matched with the first flange 5 and used for fixing the protective sleeve 6, the structure which is the same as that of the first flange 5 is adopted, an installation component for fixing is arranged on the first flange 5, the whole device is fixed on a container of the object to be detected, a plurality of annular damping blocks 8 are uniformly and fixedly arranged in the protective sleeve 6, a plurality of annular damping pieces 8 are all overlapped on second electrode pipe 4, when protection sleeve 6 receives the impact, can weaken vibrations, play the guard action to second electrode pipe 4, be equipped with the subassembly of ventilating of intercommunication second electrode pipe 4 on the protection sleeve 6 lateral wall, the subassembly of ventilating makes the cavity intercommunication that forms between second electrode pipe 4 and the first electrode pipe 3 outside, make in the measured object can enter into the cavity smoothly, and keep unanimous with outside liquid level, guarantee the measurement effect.
Wherein, first spacing subassembly is including setting up the recess of terminal surface under capacitanc level gauge main part 1, the recess matches with cavity linkage segment 2, be used for holding cavity linkage segment 2, certain limiting displacement has, evenly be equipped with the through-hole of a plurality of intercommunication recesses on the capacitanc level gauge main part 1 lateral wall, match in the through-hole and be equipped with first fastening bolt 9, a plurality of first fastening bolt 9 all with cavity linkage segment 2 threaded connection, effect through a plurality of first fastening bolt 9, can be fixed cavity linkage segment 2 and capacitanc level gauge main part 1, cavity linkage segment 2 and the inside intercommunication of capacitanc level gauge main part 1, capacitanc level gauge main part 1 external fixation cover is equipped with first seal ring 10, first seal ring 10 offsets with first ring flange 5, guarantee the leakproofness of capacitanc level gauge main part 1 and cavity linkage segment 2 hookup location.
Wherein, the second limit component comprises a plurality of first threaded holes which are evenly arranged on the bottom of the hollow connecting section 2, a plurality of second fastening bolts 11 are arranged in the first threaded holes in a matching way, the plurality of second fastening bolts 11 are all in threaded connection with the first electrode tube 3, the first electrode tube 3 can be disassembled by screwing off the plurality of second fastening bolts 11, the first electrode tube 3 is convenient to replace, a plurality of second threaded holes are arranged on the bottom of the hollow connecting section 2, a plurality of third fastening bolts 12 are arranged in the plurality of second threaded holes in a matching way, a plurality of third fastening bolts 12 are all in threaded connection with the second electrode tube 4, the second electrode tube 4 can be disassembled by screwing off the plurality of second fastening bolts 11, the second electrode tube 4 is convenient to replace, the lower end face of the hollow connecting section 2 is provided with a sealing holding groove which is matched with the first electrode tube 3 and the second electrode tube 4, the sealing holding groove can play a certain limit role, the stability of the first electrode tube 3 and the second electrode tube 4 when fixed is increased.
Wherein, first electrode pipe 3 and second electrode pipe 4 upper end are all fixed the cover and are equipped with second seal ring 13, two second seal ring 13 all offset with cavity linkage segment 2, two second seal ring 13 all through a plurality of fourth fastening bolt 14 and 2 fixed connection of cavity linkage segment, can realize second seal ring 13's fixing and change through fourth fastening bolt 14, second seal ring 13 guarantees the leakproofness of hookup location, has certain guard action simultaneously.
Wherein, the installation component comprises a plurality of driven gears 15 which are evenly arranged on the upper side of the first flange 5, the driven gears 15 respectively correspond to a plurality of installation holes on the first flange 5, the driven gears 15 are rotationally connected with the first flange 5, round holes matched with the installation holes are arranged on the driven gears 15, threaded columns 16 are arranged in the round holes in a matching way, a plurality of sliders 17 are evenly and fixedly arranged on the inner walls of the round holes, a plurality of chutes matched with the sliders 17 are arranged on the side walls of the threaded columns 16, a ring block 18 is sleeved outside the capacitive liquid level meter main body 1, the ring block 18 is rotationally connected with the first flange 5, a plurality of tooth sockets are evenly arranged on the ring side wall of the ring block 18, the driven gears 15 are all meshed with the ring block 18, a plurality of short columns 19 are evenly and fixedly connected on the upper end face of the ring block 18 in a surrounding way, the ring short columns 19 can conveniently rotate the ring block 18, when the ring block 18 rotates, the driven gears 15 are driven to rotate through the tooth grooves on the driven gears, the threaded columns 16 are screwed into the container flange or the additionally arranged screw caps along with rotation due to the action of the sliding blocks 17 and the sliding grooves, the installation and the disassembly are convenient, only the annular blocks 18 need to be rotated, and meanwhile, the stability is not influenced.
Wherein, the outer slip cover of first ring flange 5 is equipped with sealed hoop 20, the coaxial fixedly connected with fixed block 21 in 16 upper ends of screw thread post, it is equipped with connecting plate 22 to rotate the cover on the fixed block 21, connecting plate 22 and sealed hoop 20 fixed connection, when a plurality of screw thread posts 16 remove, can drive a plurality of connecting plates 22 and remove, thereby drive the vertical removal of sealed hoop 20, to first ring flange 5, second ring flange 7 and container ring flange tight hoop, have sealed and reinforcing effect, improve explosion-proof effect.
Wherein, the subassembly of ventilating is including setting up the first blow vent on the protective sleeve 6, be equipped with the second blow vent that corresponds with first blow vent position on the second electrode pipe 4, a ventilation, it is equipped with breather pipe 23 to match in the first blow vent, breather pipe 23 runs through the second blow vent, can make the cavity ventilate through breather pipe 23, be equipped with the external screw thread on the breather pipe 23 outer wall, all be equipped with the internal thread that matches with the external screw thread on first blow vent and the second blow vent inner wall, when ventilating, also avoid influencing the cavity between protective sleeve 6 and the second electrode pipe 4, breather pipe 23 one end extends to first blow vent and fixed the cover is equipped with six arris pieces 24 outward, be convenient for rotate breather pipe 23.
Wherein, fixed being equipped with wear-resisting rubber block 25 on the diapire in the protective sleeve 6, be equipped with on the wear-resisting rubber block 25 with two protection tanks of first electrode pipe 3 and second electrode pipe 4 matching, be equipped with a plurality of through holes that match with the feed liquor hole on the wear-resisting rubber block 25, wear-resisting rubber block 25 does not influence the feed liquor, is used for supporting first electrode pipe 3 and second electrode pipe 4 simultaneously to play protection and limiting displacement.
The use steps of the explosion-proof type capacitance liquid level meter are as follows:
1) when the capacitance type liquid level meter main body 1 is installed, the protective sleeve 6 is sleeved on the second electrode tube 4, meanwhile, the second flange 7 on the protective sleeve 6 is abutted against and corresponds to the first flange 5, at the moment, the wear-resistant rubber block 25 on the bottom wall of the protective sleeve 6 is abutted against the first electrode tube 3 and the second electrode tube 4, the protective sleeve 6 plays an explosion-proof role, and the plurality of annular damping blocks 8 in the protective sleeve 6 play a shock absorption protection role;
2) at the moment, the first vent hole in the protective sleeve 6 corresponds to the second vent hole in the second electrode tube 4 in position, the vent tube 23 is driven to rotate through the hexagonal prism block 24, and the space between the second electrode tube 4 and the first electrode tube 3 is ventilated by screwing and sealing through the matching relationship between the external thread and the internal thread;
3) inserting the protective sleeve 6 into a container to be measured, pressing the first flange 5 and the second flange 7 against and corresponding to flanges on the container, and then rotating the annular block 18 through a plurality of short columns 19 for installation;
4) the ring block 18 drives a plurality of driven gears 15 to rotate when rotating, the driven gears 15 rotate to drive the threaded columns 16 to rotate under the action of the sliding blocks 17 and the sliding grooves, and the threaded columns are screwed into the second flange 7 and the flange on the container to complete fixation;
5) the threaded columns 16 move when rotating, and the plurality of threaded columns 16 drive the plurality of connecting plates 22 to move when moving, so as to drive the sealing hoops 20 to move, so that the first flange 5, the second flange 7 and the flange on the container are clamped, and a sealing and fixing effect is achieved;
6) when the capacitance type liquid level meter main body 1 needs to be disassembled, the protective sleeve 6 is disassembled, then the first fastening bolts 9 on the side wall of the capacitance type liquid level meter main body 1 are screwed down, so that the hollow connecting section 2 is disassembled, then the second fastening bolts 11 and the third fastening bolts 12 in the hollow connecting section 2 are screwed down, the first electrode tube 3 and the second electrode tube 4 can be disassembled, and the integral disassembly is completed;
7) when the capacitive liquid level meter main body 1 is used, the first sealing washer 10 and the two second sealing washers 13 play a sealing role and have a certain explosion-proof effect.
The foregoing is merely exemplary and illustrative of the present invention and various modifications, additions and substitutions may be made by those skilled in the art to the specific embodiments described without departing from the scope of the invention as defined in the following claims.
Claims (4)
1. An explosion-proof capacitive liquid level meter comprises a capacitive liquid level meter main body (1) and is characterized in that the lower end of the capacitive liquid level meter main body (1) is fixedly connected with a hollow connecting section (2) through a first limiting component, a first electrode tube (3) is vertically arranged on the lower side of the hollow connecting section (2), a second electrode tube (4) is sleeved outside the first electrode tube (3), the first electrode tube (3) and the second electrode tube (4) are connected with the hollow connecting section (2) through a second limiting component, the first electrode tube (3) and the second electrode tube (4) are both electrically connected with the capacitive liquid level meter main body (1), a first flange (5) is fixedly sleeved on the hollow connecting section (2), a protective sleeve (6) is sleeved outside the second electrode tube (4), a plurality of liquid inlet holes which penetrate through are uniformly distributed on the lower end face of the protective sleeve (6), the liquid inlet holes are communicated with a cavity formed between the second electrode tube (4) and the first electrode tube (3), a second flange plate (7) is fixedly sleeved at the upper end of the protective sleeve (6), the second flange plate (7) is matched with the first flange plate (5), an installation component for fixing is arranged on the first flange plate (5), a plurality of annular damping blocks (8) are uniformly and fixedly arranged in the protective sleeve (6), the annular damping blocks (8) are all sleeved on the second electrode tube (4), and a ventilation component communicated with the second electrode tube (4) is arranged on the side wall of the protective sleeve (6);
the second limiting assembly comprises a plurality of first threaded holes uniformly formed in the bottom of the hollow connecting section (2), a plurality of second fastening bolts (11) are arranged in the first threaded holes in a matching mode, the second fastening bolts (11) are in threaded connection with the first electrode tube (3), a plurality of second threaded holes are formed in the bottom of the hollow connecting section (2), third fastening bolts (12) are arranged in the second threaded holes in a matching mode, the third fastening bolts (12) are in threaded connection with the second electrode tube (4), and sealing accommodating grooves matched with the first electrode tube (3) and the second electrode tube (4) are formed in the lower end face of the hollow connecting section (2);
the upper ends of the first electrode tube (3) and the second electrode tube (4) are fixedly sleeved with second sealing gaskets (13), the two second sealing gaskets (13) are abutted against the hollow connecting section (2), and the two second sealing gaskets (13) are fixedly connected with the hollow connecting section (2) through a plurality of fourth fastening bolts (14);
the installation assembly comprises a plurality of driven gears (15) which are uniformly arranged on the upper side of a first flange plate (5), the driven gears (15) correspond to a plurality of mounting holes in the first flange plate (5) respectively, the driven gears (15) are rotationally connected with the first flange plate (5), round holes matched with the mounting holes are formed in the driven gears (15), threaded columns (16) are matched in the round holes, a plurality of sliding blocks (17) are uniformly and fixedly arranged on the inner walls of the round holes, a plurality of sliding grooves matched with the sliding blocks (17) are formed in the side walls of the threaded columns (16), annular blocks (18) are sleeved outside the capacitive liquid level meter main body (1), the annular blocks (18) are rotationally connected with the first flange plate (5), a plurality of tooth grooves are uniformly formed in the annular side walls of the annular blocks (18), and the driven gears (15) are meshed with the annular blocks (18), a plurality of short columns (19) are uniformly and fixedly connected to the upper end surface of the annular block (18) in a surrounding manner;
a sealing hoop (20) is sleeved outside the first flange plate (5) in a sliding manner, a fixing block (21) is coaxially and fixedly connected to the upper end of the threaded column (16), a connecting plate (22) is rotatably sleeved on the fixing block (21), and the connecting plate (22) is fixedly connected with the sealing hoop (20);
the anti-abrasion protective sleeve is characterized in that an abrasion-resistant rubber block (25) is fixedly arranged on the inner bottom wall of the protective sleeve (6), two protective grooves matched with the first electrode tube (3) and the second electrode tube (4) are formed in the abrasion-resistant rubber block (25), and a plurality of through holes matched with the liquid inlet holes are formed in the abrasion-resistant rubber block (25).
2. The explosion-proof type capacitive liquid level meter according to claim 1, wherein the first limiting component comprises a groove arranged on the lower end face of the capacitive liquid level meter main body (1), the groove is matched with the hollow connecting section (2), a plurality of through holes communicated with the groove are uniformly formed in the side wall of the capacitive liquid level meter main body (1), a first fastening bolt (9) is arranged in each through hole in a matched manner, the first fastening bolts (9) are all in threaded connection with the hollow connecting section (2), a first sealing washer (10) is sleeved on the outer fixed sleeve of the capacitive liquid level meter main body (1), and the first sealing washer (10) abuts against the first flange (5).
3. The explosion-proof capacitive liquid level meter according to claim 1, wherein the ventilation assembly comprises a first ventilation port arranged on the protective sleeve (6), a second ventilation port corresponding to the first ventilation port is arranged on the second electrode tube (4), a ventilation tube (23) is matched in the first ventilation port, the ventilation tube (23) penetrates through the second ventilation port, an external thread is arranged on the outer wall of the ventilation tube (23), an internal thread matched with the external thread is arranged on each of the inner walls of the first ventilation port and the second ventilation port, and one end of the ventilation tube (23) extends out of the first ventilation port and is fixedly sleeved with a six-edge block (24).
4. An explosion-proof capacitive gauge as claimed in any one of claims 1 to 3, characterized in that it comprises the following steps in particular:
1) when the capacitive liquid level meter main body (1) is installed, the protective sleeve (6) is sleeved on the second electrode tube (4), meanwhile, the second flange (7) on the protective sleeve (6) is abutted against and corresponds to the first flange (5), at the moment, the wear-resistant rubber block (25) on the bottom wall of the protective sleeve (6) is abutted against the first electrode tube (3) and the second electrode tube (4), the protective sleeve (6) plays an explosion-proof role, and the plurality of annular damping blocks (8) in the protective sleeve (6) play a role in shock absorption and protection;
2) at the moment, the first vent hole in the protective sleeve (6) corresponds to the second vent hole in the second electrode tube (4), the vent tube (23) is driven to rotate through the hexagonal prism block (24), and the vent tube is screwed in and sealed by utilizing the matching relationship between the external thread and the internal thread, so that the space between the second electrode tube (4) and the first electrode tube (3) is ventilated;
3) inserting the protective sleeve (6) into a container to be measured for liquid level, enabling the first flange plate (5) and the second flange plate (7) to be abutted against and corresponding to flange plates on the container, and then rotating the annular block (18) through a plurality of short columns (19) for installation;
4) the ring block (18) drives a plurality of driven gears (15) to rotate when rotating, the driven gears (15) rotate to drive the threaded columns (16) to rotate under the action of the sliding blocks (17) and the sliding grooves, and the threaded columns are screwed into the second flange plate (7) and the flange plate on the container to complete fixation;
5) the threaded columns (16) can move when rotating, and the plurality of threaded columns (16) drive the plurality of connecting plates (22) to move when moving, so that the sealing hoops (20) are driven to move, and the first flange plate (5), the second flange plate (7) and the container upper flange plate are clamped tightly, so that a sealing and fixing effect is achieved;
6) when the capacitance type liquid level meter main body (1) needs to be disassembled, the protective sleeve (6) is disassembled firstly, then a plurality of first fastening bolts (9) on the side wall of the capacitance type liquid level meter main body (1) are screwed off, so that the hollow connecting section (2) is disassembled, then a plurality of second fastening bolts (11) and a plurality of third fastening bolts (12) in the hollow connecting section (2) are screwed off, the first electrode tube (3) and the second electrode tube (4) are disassembled, and the integral disassembly is completed;
7) when the capacitance type liquid level meter main body (1) is used, the first sealing washer (10) and the two second sealing washers (13) play a sealing role and have an explosion-proof effect.
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