CN111157058A - Multifunctional glue filling structure of water meter - Google Patents

Multifunctional glue filling structure of water meter Download PDF

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Publication number
CN111157058A
CN111157058A CN202010038822.4A CN202010038822A CN111157058A CN 111157058 A CN111157058 A CN 111157058A CN 202010038822 A CN202010038822 A CN 202010038822A CN 111157058 A CN111157058 A CN 111157058A
Authority
CN
China
Prior art keywords
meter
cover plate
impeller box
inductor
base
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010038822.4A
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Chinese (zh)
Inventor
方欣
颜军
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qingdao Hiwits Meter Co ltd
Original Assignee
Qingdao Hiwits Meter Co ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qingdao Hiwits Meter Co ltd filed Critical Qingdao Hiwits Meter Co ltd
Priority to CN202010038822.4A priority Critical patent/CN111157058A/en
Publication of CN111157058A publication Critical patent/CN111157058A/en
Pending legal-status Critical Current

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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
    • G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
    • G01F1/20—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow
    • G01F1/28—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by detection of dynamic effects of the flow by drag-force, e.g. vane type or impact flowmeter
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C15/00—Enclosures for apparatus; Booths
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
    • B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
    • B05C5/0208—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work for applying liquid or other fluent material to separate articles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/02—Sealings between relatively-stationary surfaces
    • F16J15/14—Sealings between relatively-stationary surfaces by means of granular or plastic material, or fluid
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
    • G01B7/14—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring distance or clearance between spaced objects or spaced apertures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/12—Cleaning arrangements; Filters
    • G01F15/125—Filters
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
    • G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
    • G01F15/14—Casings, e.g. of special material
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/20—Mountings; Secondary casings or frames; Racks, modules or packs; Suspension devices; Shock absorbers; Transport or carrying devices; Holders
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K5/00—Casings, cabinets or drawers for electric apparatus
    • H05K5/06—Hermetically-sealed casings
    • H05K5/064—Hermetically-sealed casings sealed by potting, e.g. waterproof resin poured in a rigid casing
    • 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
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Fluid Mechanics (AREA)
  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Measuring Volume Flow (AREA)

Abstract

The invention discloses a multifunctional glue filling structure of a water meter, which comprises a filter screen, an impeller box gland, a direct-insert base meter inductor, an inductor PCB (printed circuit board) welding plate, an elastic pressing component, a base meter cover plate, a meter shell and a transparent shell, wherein the meter shell is cast, the left end and the right end of the meter shell are respectively an outlet end and an inlet end of water, the upper end of the meter shell is provided with a mounting hole, the direct-insert base meter inductor is fixedly arranged on the inductor PCB welding plate and is in a compression state, the small movement impeller box component and the filter screen are arranged in the meter shell, the impeller box gland, a sheet pressing ring and a metal pressing ring are sequentially arranged in the mounting hole from top to bottom, and the small movement impeller box component is pressed downwards by the lower part of: the multifunctional glue pouring channel is arranged, so that the multifunctional glue pouring channel can be used for glue pouring and fastening; the battery bin is arranged outside the shell and is independently disassembled and assembled, so that the battery is convenient to replace without opening the shell; the battery compartment is filled with the nano paste, the battery is immersed in the nano paste, and the sealing performance is good.

Description

Multifunctional glue filling structure of water meter
Technical Field
The invention belongs to the technical field of water metering instruments, and particularly relates to a multifunctional glue filling structure of a water meter.
Background
The flow measurement of water is to detect the rotation number of turns of a metal induction sheet on the upper part of an impeller through a direct-insertion base meter inductor and convert the rotation number of turns into the flow of water, and the distance between the direct-insertion base meter inductor and the metal induction sheet is the premise of ensuring the detection precision. Normally, the glue filling and sealing of the direct-insertion base meter inductor adopts AB glue, the use method is to fill the AB glue after the direct-insertion base meter inductor is compressed, and after solidification, the direct-insertion base meter inductor is simultaneously sealed and fixed. Because the direct-insertion base meter inductor has extremely high requirement on the distance, the detection distance at the front end of the direct-insertion base meter inductor changes to different degrees due to expansion and contraction of the device caused by the change of the environmental temperature, and the change of the distance increase is irreversible, so that the detection fault is directly caused.
Batteries in the water meter need to be replaced after a period of time, the existing water meter batteries are placed in the shell, and the shell needs to be opened during replacement, so that on one hand, the operation is complex, and the efficiency is low; on the other hand, opening the housing breaks the seal inside the housing, which is more cumbersome to reseal.
Disclosure of Invention
Adopt AB glue sealed fixed mode to the base table inductance of cut-in among the prior art, bring the device expend with heat and contract with cold to ambient temperature's change, lead to the detection distance of cut-in base table inductance front end to take place the change of different degrees to directly lead to the problem of detecting the trouble, provide a multi-functional encapsulating structure of water gauge.
A multifunctional glue filling structure of a water meter comprises a filter screen, an impeller box gland, a direct-insert base meter inductor, an inductor PCB welding plate, an elastic pressing piece, a base meter cover plate, a meter shell and a transparent shell, wherein the meter shell is formed by casting, the left end and the right end of the meter shell are respectively an outlet end and an inlet end of water, the upper end of the meter shell is provided with a mounting hole, the direct-insert base meter inductor is fixedly mounted on the inductor PCB welding plate, the inductor PCB welding plate and the direct-insert base meter inductor are mounted on the upper side of the impeller box gland, the base meter cover plate is mounted on the upper side of the impeller box gland, the elastic pressing piece is positioned between the base meter cover plate and the impeller box gland and is in a compression state, the inductor PCB welding plate is pressed on the impeller box gland downwards, the small-core impeller box component and the filter screen are mounted inside the meter shell, the impeller box gland, a sheet-, wherein the lower part of the impeller box gland presses the small movement impeller box component downwards, the metal pressure ring is a circular ring-shaped part, the outer circumference is provided with an external thread, an internal thread is arranged in the mounting hole, the metal pressure ring is in threaded connection with the mounting hole, the sheet-shaped pressure ring, the impeller box gland, the small movement impeller box component and the filter screen are downwards arranged, the small movement impeller component is arranged in the small movement impeller box component, the upper rotating shaft is arranged in a blind hole in the middle of the lower side of the impeller box gland, the lower end of the rotating shaft is sleeved on a shaft embedded in the middle of the small-movement impeller box component base, the base meter cover plate is arranged on the meter shell, the transparent shell is arranged above the base meter cover plate, the base meter cover plate and the impeller box gland enclose a first sealed glue filling cavity, the direct-insertion base meter inductor and inductor PCB welding plate is positioned in the first glue filling cavity, and nano paste is filled into the first glue filling cavity and immerses and seals the direct-insertion base meter inductor and inductor PCB welding plate in a sealing mode; the utility model discloses a base table apron, including base table apron, base.
Preferably, the multi-functional encapsulating structure of water gauge, the outside protrusion of terminal surface forms fourth annular arch under the base table apron, the upper end of impeller box gland upwards the arch forms third annular arch, fourth annular arch and the mutual adaptation of third annular arch, peg graft together, form inclosed first encapsulating cavity from this.
On the basis of the scheme, the multifunctional glue pouring structure of the water meter is characterized in that a fixing column is formed on the upper side of the base meter cover plate, a mounting hole is formed in the circuit board, and the circuit board is tightly mounted on the fixing column on the base meter cover plate in a matched mode.
On the basis of the scheme, the multifunctional glue filling structure of the water meter is characterized in that an eighth annular bulge is formed on the upper end surface of the base meter cover plate, the lower end surface of the transparent shell is downwards protruded to form a fifth annular bulge and a seventh annular bulge, the outer side of the fifth annular bulge is provided with a buckle bulge, the seventh annular bulge is positioned inside the fifth annular bulge, the seventh annular bulge encloses an accommodating cavity with an opening at the lower part, used for accommodating the LCD display screen on the circuit board, when the transparent shell is buckled above the base surface cover plate, the eighth annular bulge and the fifth annular bulge are installed together in a tight fit mode, a sealing ring is arranged between the eighth annular bulge and the fifth annular bulge, a pit matched with the buckle in the bulge mode is formed in the eighth annular bulge, the LCD screen is enclosed in the middle of the seventh annular bulge, a certain gap is formed between the tail end of the seventh annular bulge and the circuit board, and the AB glue can flow through the gap.
On the basis of the scheme, the water meter is of a multifunctional glue filling structure, and the transparent shell is provided with a fourth glue filling hole.
On the basis of the scheme, the multifunctional glue filling structure of the water meter further comprises a battery compartment, a battery cavity with a downward opening is formed in the base meter cover plate, the battery compartment is of a cavity structure with an upper opening, the battery compartment is connected with the base meter cover plate in a buckling mode and forms a closed cavity for containing a battery with the battery cavity, and the battery compartment is located outside the mounting hole.
Preferably, the multifunctional glue filling structure of the water meter is characterized in that a second buckle protrusion is formed on the outer wall of the battery compartment, and a pit matched with the second buckle protrusion is formed on the base meter cover plate.
Preferably, the multifunctional glue filling structure of the water meter is characterized in that a sealing ring is arranged between the battery compartment and the base meter cover plate, and the battery compartment is filled with nano paste to seal the battery.
Preferably, the water meter multifunctional glue filling structure is characterized in that a first glue filling hole communicated with the battery cavity is formed in the upper side of the base meter cover plate.
Preferably, the water meter multifunctional glue filling structure is characterized in that the fourth glue filling hole is located above the first glue filling hole in the vertical direction.
The invention has the beneficial effects that:
1. the multifunctional glue pouring channel is arranged, so that the multifunctional glue pouring channel can be used for glue pouring and fastening;
2. the battery bin is arranged outside the shell and is independently disassembled and assembled, so that the battery is convenient to replace without opening the shell;
3. the battery compartment is filled with the nano paste, and the battery is immersed in the nano paste, so that the sealing performance is good;
4. the glue filling hole is positioned on the upper side of the transparent shell, and glue filling operation is performed after the whole meter is assembled, so that the process is convenient to arrange.
Drawings
FIG. 1 is a cross-sectional view of one embodiment of the present invention;
FIG. 2 is a schematic diagram of glue filling according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a watch case structure according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a transparent housing according to an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of the impeller cartridge gland in accordance with one embodiment of the present invention;
FIG. 6 is a schematic diagram of a base watch cover plate according to an embodiment of the present invention;
FIG. 7 is a schematic diagram of a base watch case cover according to an embodiment of the present invention;
FIG. 8 is a schematic diagram of an inductor PCB pressing plate according to an embodiment of the present invention;
FIG. 9 is a schematic diagram of an inductor PCB pressing plate according to an embodiment of the present invention;
FIG. 10 is a schematic diagram of a battery compartment according to an embodiment of the present invention;
FIG. 11 is a schematic diagram of the structure of the antimagnetic shield according to one embodiment of the present invention;
FIG. 12 is a schematic diagram of the structure of a antimagnetic housing according to an embodiment of the invention;
FIG. 13 is a schematic diagram of a lead seal pin according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of a battery compartment glue filling according to an embodiment of the present invention;
fig. 15 is a schematic view of lead seal pin installation according to an embodiment of the present invention.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings in the embodiment of the invention.
The utility model provides a multi-functional encapsulating structure of water gauge, includes filter screen 2, impeller box gland 5, cut straightly basic table inductance 7, inductance PCB welded plate 8, elasticity compresses tightly piece 12, basic table apron 29, watchcase 32 and transparent shell 18, watchcase 32 is cast and is formed, and both ends are the exit end and the entry end of water respectively about, and the mounting hole 321 is seted up to the upper end, cut straightly basic table inductance 7 fixed mounting is on inductance PCB welded plate 8, inductance PCB welded plate 8 is installed in the upside of impeller box gland 5 together with cut straightly basic table inductance 7, basic table apron 29 is installed in the upside position of impeller box gland 5, elasticity compresses tightly piece 12 and is located between basic table apron 29 and the impeller box gland 5, is in compression state, compresses tightly inductance PCB welded plate 8 on impeller box gland 5 downwards, little core impeller box subassembly 3 and filter screen 2 are installed inside watchcase 32, impeller box gland 5, The sheet pressing ring 9 and the metal pressing ring 10 are sequentially installed in the installation hole 321 from top to bottom, wherein the lower part of the impeller box pressing cover 5 downwards presses the small movement impeller box component 3, the metal pressing ring 10 is a circular ring-shaped part, an external thread is formed on the outer circumference of the metal pressing ring, an internal thread is formed in the installation hole 321, the metal pressing ring 10 is in threaded connection with the installation hole 321, the sheet pressing ring 9, the impeller box pressing cover 5, the impeller box component 3 and the filter screen 2 are downwards pressed and installed in the meter shell 32, the small movement impeller component 4 is installed in the small movement impeller box component 3, the upper rotating shaft of the small movement impeller component is arranged in the middle blind hole 58 at the lower side of the impeller box pressing cover 5, the lower end of the small movement impeller box component 3 is sleeved on the shaft 301 embedded in the middle of the base, the base meter cover plate 29 is installed on the meter shell 32, the transparent shell 18 is installed above the base meter cover plate 29, the, the direct-insertion base meter inductor 7 and the inductor PCB welding plate 8 are located inside a first glue filling cavity 283, nano-paste is filled into the first glue filling cavity 283, and the direct-insertion base meter inductor 7 and the inductor PCB welding plate 8 are immersed and sealed by the nano-paste; second encapsulating hole 299 is seted up to base table apron 29's up the up end and is linked up inside first encapsulating cavity 283, set up third encapsulating hole 184 on the transparent shell 18, third encapsulating hole 184 is located the top of second encapsulating hole 299, is simultaneously the encapsulating and fixed usefulness, nut is inlayed to the downside of second encapsulating hole 299, and after the encapsulating finishes, cross pan head area pad screw passes third encapsulating hole 184 on transparent shell 18, second encapsulating hole 299 on the base table apron 29 and the inlayed nut threaded connection of downside, fastens transparent shell 18 and base table apron 29 together.
Third encapsulating hole 184 is located the top of second encapsulating hole 299, and the encapsulating is done simultaneously and is fixed usefulness, accomplishes to first encapsulating cavity 283 in the encapsulating after the encapsulating finishes, twists the cross pan head screw again, and transparent shell 18 and base table apron 29 installation are firm on the one hand, and on the other hand has reduced trompil quantity, and the dismouting is more convenient, makes the succinct beautiful of table body outward appearance.
The multifunctional glue pouring channel is arranged, so that the multifunctional glue pouring channel can be used for glue pouring and fastening; the battery bin is arranged outside the shell and is independently disassembled and assembled, so that the battery is convenient to replace without opening the shell; the battery compartment is filled with the nano paste, and the battery is immersed in the nano paste, so that the sealing performance is good; the glue filling hole is positioned on the upper side of the transparent shell, and glue filling operation is performed after the whole meter is assembled, so that the process is convenient to arrange.
As shown in fig. 1, the small movement impeller assembly 4 is installed in the small movement impeller box assembly 3, and the upper part of the impeller of the small movement impeller assembly 4 is provided with a metal induction sheet 40.
As shown in fig. 3, case 32 is cast, the left and right ends are water outlet and water inlet, the upper end is provided with mounting hole 321, the upper end of mounting hole 321 is provided with internal thread for mounting the gauge head assembly, the outer part of case 32 horizontally protrudes outwards to form a mounting plane 322, and fastening screw hole 323 is provided on mounting plane 322.
As shown in fig. 1, the impeller case gland 5, the sheet pressing ring 9 and the metal pressing ring 10 are sequentially installed in the installation hole 321 from top to bottom, wherein the lower portion of the impeller case gland 5 presses the small movement impeller case assembly 3 downward. The metal pressing ring 10 is a circular ring-shaped part, an external thread is formed on the outer circumference of the metal pressing ring, an internal thread is formed in the mounting hole 321, the metal pressing ring 10 is in threaded connection with the mounting hole 321, the sheet pressing ring 9, the impeller box pressing cover 5, the small movement impeller box assembly 3 and the filter screen 2 are downwards pressed, and the rubber gasket 1 is pressed inside the meter shell 32. The small core impeller component 4 is arranged in the small core impeller box component 3, the upper rotating shaft is arranged in the middle blind hole 58 at the lower side of the impeller box gland 5, and the lower end is sleeved on a shaft 301 which is arranged in the middle of the base of the small core impeller box component 3 and is embedded.
As shown in fig. 1, the impeller case cover 5 is a disk-shaped component, a first O-ring 6 is disposed in the mounting hole 321 of the case 32, the first O-ring 6 is located between the impeller case cover 5 and the sheet-shaped pressing ring 9, and the first O-ring is pressed and sealed by the sheet-shaped pressing ring 9 and the metal pressing ring 10.
As shown in fig. 4, the transparent casing 18 is a cover with an open lower portion, a lower end of the cover protrudes downward to form a fifth annular protrusion 181 and a seventh annular protrusion 183, and a snap protrusion 182 is formed on an outer side of the fifth annular protrusion 181. The seventh annular protrusion 183 is located inside the fifth annular protrusion 181, and the seventh annular protrusion 183 encloses a receiving cavity with an opening at a lower portion for receiving the LCD screen 251 on the circuit board 25. As shown in fig. 2, the LCD screen 251 is enclosed in the middle of the seventh annular protrusion 183, and a gap is formed between the end of the seventh annular protrusion 183 and the circuit board 25, through which the AB glue can flow. The transparent housing 18 is formed with a wireless antenna seating cavity 186 in which a wireless antenna is seated when a wireless transmission mode is employed. The transparent shell 18 is provided with a third glue filling hole 184 and a fourth glue filling hole 185. The transparent shell 18 is also provided with a first mounting hole 187 for a lead sealing pin.
As shown in fig. 2, when the transparent casing 18 is fastened on the base cover plate 29, the eighth annular protrusion 290 is tightly fitted with the fifth annular protrusion 181, a sealing ring is disposed therebetween, and a concave recess matched with the fastening protrusion 182 is formed on the eighth annular protrusion 290. As shown in fig. 1, the third glue filling hole 184 is located above the second glue filling hole 299, and is used for both glue filling and fixing. Nuts are embedded on the lower sides of the second glue filling holes 299, and after glue filling is finished, the cross pan head padded screws penetrate through the third glue filling holes 184 in the transparent shell 18 and the second glue filling holes 299 in the base surface cover plate 29 to be in threaded connection with the nuts embedded on the lower sides, so that the transparent shell 18 and the base surface cover plate 29 are fastened together. The circuit board 25 is provided with mounting holes and is tightly fitted on the fixing posts 282 of the base cover plate 29. As shown in fig. 2, fourth glue hole 185 is located above first glue hole 298.
As shown in fig. 5, the impeller box gland 5 is a disc-shaped part, which has a cylindrical body 51 matching with the mounting hole 321, and has a pressing plane 52 matching with the sheet-shaped pressing ring 9 at the upper end, the upper edge of the cylindrical body 51 is removed to form a first gap 53, when the sheet-shaped pressing ring 9 is tightly attached to the pressing plane 52, the lower surface of the sheet-shaped pressing ring 9 and the surface of the mounting hole 321 close the first gap 53 to form a closed cavity to accommodate the first O-ring 6. By the design, the compression amount of the first O-shaped ring 6 is very accurate and is completely ensured by the design size of the first notch 53, and the good sealing performance is ensured.
As shown in fig. 5, the upper end of the impeller casing gland 5 is upwardly protruded to form a third annular protrusion 54, and the third annular protrusion 54 encloses a cavity 57 with an upper opening for mounting the inductor PCB board 8. An inductor mounting blind hole 56 is formed in the lower side surface of the concave cavity 57, and a rotating shaft mounting blind hole 58 is formed in the lower end surface of the impeller box gland 5. The direct-insertion base meter inductor 7 is fixedly installed on the inductor PCB welding plate 8, the inductor PCB plate 8 is placed in the cavity 57, and meanwhile, the direct-insertion base meter inductor 7 is inserted into the inductor installation blind hole 56. When the pin of the inductor 7 of the direct-insert base meter penetrates through the inductor PCB 8, the inductor PCB 8 is pressed, the inductor pin is pressed, and the inductor pin and the inductor PCB 8 are welded into a whole. At this time, the bottom of the inductor is in contact with the bottom of the blind hole 56, so that the distance between the direct-insertion base meter inductor 7 and the metal induction sheet 40 on the upper part of the impeller is ensured to be minimum.
As shown in fig. 6 and 7, an eighth annular projection 290, a first fastening hole 297 and a fixing post 282 are formed on the upper end surface of the base cover plate 29, and a first annular projection 281, a fourth annular projection 291 and a fifth annular projection 292 are formed by projecting the lower end surface downward, wherein the fourth annular projection 291 is located inside the first annular projection 281, and the fifth annular projection 292 is located inside the fourth annular projection 291. When base cover plate 29 is mounted on case 32, first annular projection 281 is housed around the outer edge of mounting hole 321.
As shown in fig. 6, a battery cavity 294 with a downward opening is formed on the lower side of the base cover plate 29, the battery cavity 294 is located outside the first annular protrusion 281, a second lead sealing pin mounting hole 295 is formed on the side wall of the battery cavity 294, the lower end surface of the base cover plate 29 protrudes downward to form a clamping groove protrusion 296 matched with the second snap-fit protrusion 261 on the battery compartment, a first glue filling hole 298 and a second glue filling hole 299 are formed on the upper end surface of the base cover plate 29, and the first glue filling hole 298 is communicated with the battery cavity 294; the second glue hole 299 is located inside the fourth annular projection 291.
As shown in figure 1, a valve is arranged at the water outlet of the meter case 32, a control motor is arranged in the base meter cover plate 29, and the output shaft of the control motor extends out of the base meter cover plate 29 and extends into the valve to control the opening and closing of the valve.
As shown in fig. 8 and 9, the inductor PCB pressing plate 11 presses the upper end surface of the inductor PCB plate 8, and presses the inductor PCB plate 8 and the direct-inserted meter inductor 7 thereunder downward into the impeller box pressing cover 5, so as to ensure that the distance between the bottom of the inductor and the metal induction piece 40 on the upper portion of the impeller is kept within 2.5mm (the thickness of the bottom wall of the blind hole 56 of the impeller box pressing cover 5 on the lower portion of the inductor is 1.2mm, and the thickness of the metal induction piece 40 on the upper portion of the impeller and the lower portion of the impeller box pressing cover 5 is about 0.8mm), so that it is ensured that no magnetic induction signal is stable and normal under the condition of high rotation. The upper end of the inductor PCB pressure plate 11 protrudes upward to form a sixth annular protrusion 111.
As shown in fig. 1, base cover plate 29 is fixedly mounted on case 32 and positioned above inductor PCB pressure plate 11. The spider head screw is screwed through the first fastening hole 297 to the fastening screw hole 323 in the case 32, and an elastic pressing member 12, preferably a spring, is provided between the base cover plate 29 and the inductance PCB pressure plate 11. The upper end of the spring is located in the fifth annular protrusion 292 on the base cover plate 29, and the lower end is located inside the sixth annular protrusion 111 of the inductor PCB pressure plate 11, which plays a role of positioning and prevents the spring from sliding off.
As shown in FIG. 1, the fourth annular projection 291 of the base cover plate 29 and the third annular projection 54 of the impeller cartridge gland 5 are fitted to each other and inserted together, and the second O-ring 30 is provided between the first step surface 293 and the second step surface 55 to perform a side sealing function. Therefore, a first sealed glue filling cavity 283 is formed, and the elastic pressing piece 12, the inductor PCB pressing plate 11, the inductor PCB welding plate 8 and the direct-insert substrate meter inductor 7 are located in the first glue filling cavity 283. The side seal has the advantage over the end face seal that it is not sensitive to the effect of the vertical displacement of the seal, because in the end face seal, the variation of the displacement of the sealed parts in the vertical direction can cause the variation of the compression of the seal ring, thus affecting the sealing effect; the compression amount of the side seal type seal ring is formed by horizontally pressing, so that the influence of the displacement change of the seal member in the vertical direction on the compression amount of the seal ring is not large.
And the nano paste is filled into the first glue filling cavity 283 to seal the direct-insert base meter inductor 7, so that external moisture is prevented from invading the direct-insert base meter inductor 7 to cause induction faults. The sealing method of the water repellent nano-paste filling mode is very reliable and convenient to operate; on the other hand, when the sealing is ensured, the elastic pressing piece 12 tightly pushes the inductor PCB welding plate 8 and the direct-insertion base meter inductor 7 in the blind hole 56 of the impeller box gland 5, so that strict distance guarantee is achieved, the detection distance of the direct-insertion base meter inductor 7 is ensured, and the detection is stable and reliable. The nano paste has the advantages that the nano paste has certain fluidity, and the elastic pressing piece 12 still keeps good sealing in the process of pressing up and down tiny actions, so that the sealing cannot be damaged. In the existing water meter, AB glue is adopted for glue filling and sealing of the direct-insertion base meter inductor 7, the use method is that the AB glue is filled after the direct-insertion base meter inductor 7 is compressed, and after solidification, the direct-insertion base meter inductor 7 is simultaneously sealed and fixed. This poses a problem in that the requirement for the distance of the in-line base meter inductor 7 is extremely high, so that the detection distance at the front end of the in-line base meter inductor 7 changes to different degrees due to expansion and contraction of the device caused by changes in ambient temperature, and the change of the distance increase is irreversible, thereby directly causing detection failure. For example, under the influence of ambient temperature, the inside of the watch case 32 freezes, and the impeller case gland 5 is lifted upwards from the lower side to deform the impeller case gland, so that the inductor PCB 8 is lifted upwards for a certain distance, and after the ice melts and the impeller case gland 5 deforms and recovers, no external force is applied to the upper side of the inductor PCB 8 to restore the position of the inductor PCB, so that the upward displacement generated by the inductor PCB cannot be restored, and the displacement is repeatedly accumulated, and gradually increases to cause detection failure. The elastic pressing piece 12 has self-adaptive capacity, good self-adaptation can be achieved for the recovery of movement change of the inductor 7 caused by the ambient temperature, and in the process, for possible water vapor, the flowability of the nano paste can cover and protect an object in the sealing cavity from being corroded.
In order to make the first glue filling cavity 283 have good sealing, and prevent the external water from entering and the internal nano-paste from flowing out, a second O-ring 30 is arranged between the fourth annular projection 291 of the base cover plate 29 and the third annular projection 54 of the impeller box gland 5. The lower-end outer-ring removed material of the fourth annular projection 291 forms a first step surface 293, and the upper-end inner-ring removed material of the third annular projection 54 forms a second step surface 55. When the fourth annular projection 291 and the third annular projection 54 are inserted together, the first step surface 293 and the second step surface 55 define an annular cavity for accommodating the second O-ring 30.
As shown in fig. 10, the battery compartment 26 is a cavity structure with an open upper portion, a second snap projection 261 is formed on the outer side, and a third mounting hole 262 of the lead sealing pin is further opened on the outer wall. The lower end surface of the base meter cover plate 29 protrudes downwards to form a clamping groove protrusion 296 matched with the second buckle protrusion 261 on the battery compartment, the battery compartment 26 is connected with a battery cavity 294 on the base meter cover plate 29 in a buckle mode to form a closed cavity for containing the battery 27, and nano paste is filled inside the cavity for sealing.
As shown in fig. 11, the antimagnetic cover 16 is formed by bending a metal plate, wraps the wristwatch case 32 from the lower side in a U-shape, and has a horizontally arranged bent plate 161 on the upper side, and the bent plate 161 is provided with a third mounting hole 162.
The bent plate 161 is engaged with the mounting flat 322 of the wristwatch case 32, and the cross screw is simultaneously passed through the third mounting hole 162 and the first fastening hole 297 to be screwed into the fastening screw hole 323, thereby fixing the base cover plate 29 and the antimagnetic cover 16 to the wristwatch case 32. The pan head cross screw is hidden in the base surface cover plate 29 and is not exposed, so that the appearance is more attractive. Meanwhile, screws are used as few as possible, the number of parts is reduced, and the mounting and the dismounting are convenient and fast.
As shown in fig. 12, the antimagnetic housing 34 covers the antimagnetic housing 16, a fourth mounting hole 341 is formed at the bottom of the antimagnetic housing 34, and a cross head screw passes through the third mounting hole 341 and is in threaded connection with the antimagnetic housing 16.
As shown in fig. 13, the lead seal pin 14 has an engaging end 141 at the upper end and a lead seal hole 142 at the lower end. As shown in fig. 15, the lead seal 14 passes through the first lead seal mounting hole 187 of the transparent casing 18, the second lead seal mounting hole 295 of the base cover plate 29, and the third lead seal mounting hole 262 of the battery compartment 26 in sequence, the engaging end 141 is located on the upper side of the transparent casing 18, the lower end of the engaging end extends out, and the lead seal wire passes through the lead seal hole 142 provided at the lower end of the lead seal to complete lead seal. As shown in fig. 2, 14 and 15, the battery compartment 26 is located at the outer side, so that the battery 27 can be more conveniently disassembled, assembled and replaced, when the battery 27 is replaced, only the lead sealing line needs to be opened, the battery compartment 26 is pulled downwards, the battery 27 inside the battery compartment is replaced, and the lead sealing line is opened after the replacement is completed. In the existing water meter, the battery 27 is often arranged inside the transparent outer cover 18, and when the battery is replaced, a plurality of parts need to be opened, so that the operation is complex and troublesome, and the efficiency is low.
As shown in fig. 1, the third glue filling hole 184 is located above the second glue filling hole 299, and when glue is filled, the glue gun is inserted into the third glue filling hole 184, the tail end of the glue outlet extends to the second glue filling hole 299, and the nano paste is filled into the first glue filling cavity 283, so that the elastic pressing member 12, the inductor PCB pressing plate 11, the inductor PCB welding plate 8, and the direct-insert base meter inductor 7 are not sealed. After the glue filling is completed, a cross pan head screw is installed in the third glue filling hole 184 to be fastened with a nut embedded in the second glue filling hole 299.
In the glue filling operation of the battery compartment 26, as shown in fig. 2 and 14, the fourth glue filling hole 185 is located above the first glue filling hole 298, when the glue is filled, the glue gun is inserted into the fourth glue filling hole, the tail end of the glue outlet extends to the first glue filling hole 298, and the nano paste enters the battery compartment 26, submerges the battery 27 therein, and is sealed therein.
And finally, filling the AB glue, and inserting a glue gun into the fourth glue filling hole 185 as shown in FIG. 2, wherein a glue outlet is positioned at the lower side of the transparent shell 18, and the AB glue flows in to immerse and seal the circuit board 25. The AB glue enters the receiving cavity surrounded by the seventh annular protrusion 183 and having an open lower portion through the gap between the end of the seventh annular protrusion 175 and the circuit board 25, and seals the LCD screen 251 therein. As shown in fig. 2, the upper liquid level of the AB glue is located at the position of the dotted line on the lower side of the LCD screen 251, the seventh annular protrusion 183 encloses an accommodating cavity with an open lower portion to form a sealed cavity, the AB glue does not cover the LCD screen 251, and the LCD screen 251 can be read from the upper side of the transparent casing 18.
The cavity that seventh annular protrusion 183 encloses, at the in-process of encapsulating, AB glue seals it into inclosed cavity, and the air of its inboard can not discharge, and along with the entering of AB glue, inside atmospheric pressure increases, and atmospheric pressure after the increase can prevent that AB glue from continuing to get into, surpassing LCD display screen 251. After the glue is filled, the LCD screen 251 is completely sealed to prevent the erosion of external water vapor and dust.
Because the specific gravity of the AB glue is smaller than that of the nano paste, the AB glue is filled when the lower side is filled with the nano paste, and the AB glue on the upper side cannot flow into the battery bin 26.
At present, most of glue filling sealing of the water meter is glue filling operation firstly, and the next step of assembly can be carried out after the AB glue is solidified. The AB glue has long solidification time, needs to wait for a long time, and is very inconvenient for the arrangement of the whole process flow. Structural design is passed through to this application for the operation of encapsulating is gone on again after whole equipment finishes, just can be to inside encapsulating operation at 18 upsides of transparent housing, and the encapsulating finishes just directly becomes the finished product warehouse entry, has saved the time of waiting for AB glue to solidify in the process flow, to the more flexibility of arrangement of whole process flow, has improved production efficiency.
Among them, nanopaste is Parylene (Parylene), a generic name for a family of thermoplastic polymers synthesized from p-xylene. Also known as water repellent cream, parylene.
It will be appreciated that although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims (10)

1. A multifunctional glue filling structure of a water meter is characterized by comprising a filter screen (2), an impeller box gland (5), a direct-insertion base meter inductor (7), an inductor PCB welding plate (8), an elastic pressing piece (12), a base meter cover plate (29), a meter shell (32) and a transparent shell (18),
the shell (32) is cast, the left end and the right end are respectively an outlet end and an inlet end of water, the upper end is provided with a mounting hole (321),
the direct-insert base meter inductor (7) is fixedly arranged on an inductor PCB welding plate (8), the inductor PCB welding plate (8) and the direct-insert base meter inductor (7) are arranged on the upper side of the impeller box gland (5), the base meter cover plate (29) is arranged on the upper side of the impeller box gland (5), the elastic pressing piece (12) is positioned between the base meter cover plate (29) and the impeller box gland (5) and is in a compression state, and the inductor PCB welding plate (8) is pressed on the impeller box gland (5) downwards,
the small movement impeller box assembly (3) and the filter screen (2) are arranged inside the watch case (32), the impeller box gland (5), the sheet-shaped pressing ring (9) and the metal pressing ring (10) are sequentially arranged in the mounting hole (321) from top to bottom, the lower part of the impeller box gland (5) downwards presses the small movement impeller box assembly (3), the metal pressing ring (10) is a circular ring-shaped part, external threads are formed on the outer circumference of the metal pressing ring, internal threads are arranged in the mounting hole (321), the metal pressing ring (10) is in threaded connection with the mounting hole (321), the sheet-shaped pressing ring (9), the impeller box gland (5), the small movement impeller box assembly (3) and the filter screen (2) are downwards arranged, the small movement impeller assembly (4) is arranged in the small movement impeller box assembly (3), the upper rotating shaft of the small movement impeller box gland is arranged in a lower side middle blind hole (58) of the impeller box gland (5), the lower end of the small movement impeller box assembly (3),
the base watch cover plate (29) is mounted on the watch case (32), the transparent casing (18) is mounted above the base watch cover plate (29),
the base meter cover plate (29) and the impeller box gland (5) enclose a closed first glue filling cavity (283), the direct-insertion base meter inductor (7) and the inductor PCB welding plate (8) are located in the first glue filling cavity (283), nano paste is filled into the first glue filling cavity (283), and the direct-insertion base meter inductor (7) and the inductor PCB welding plate (8) are immersed and sealed by the nano paste;
the upper end surface of the base surface cover plate (29) is provided with a second glue filling hole (299) which is communicated with the inside of the first glue filling cavity body (283), the transparent shell (18) is provided with a third glue filling hole (184), the third glue filling hole (184) is positioned above the second glue filling hole (299) and is used for glue filling and fixing,
and nuts are embedded on the lower sides of the second glue pouring holes (299), after glue pouring is finished, the cross pan head bolt with the pad penetrates through the third glue pouring hole (184) in the transparent shell (18) and the second glue pouring hole (299) in the base meter cover plate (29) to be in threaded connection with the nuts embedded on the lower sides, and the transparent shell (18) and the base meter cover plate (29) are fastened together.
2. A multi-functional potting compound structure of a water meter in claim 1, wherein the lower end surface of the base cover plate (29) is protruded outward to form a fourth annular protrusion (291), the upper end surface of the impeller box cover (5) is protruded upward to form a third annular protrusion (54), the fourth annular protrusion (291) and the third annular protrusion (54) are adapted to each other and are connected together by plugging, thereby forming a first potting compound chamber (283) which is sealed.
3. The multifunctional glue filling structure of the water meter according to claim 1, wherein the upper side of the base meter cover plate (29) is formed with a fixing column (282), and the circuit board (25) is provided with a mounting hole and is tightly fitted on the fixing column (282) on the base meter cover plate (29).
4. The multifunctional glue filling structure of the water meter of claim 3, characterized in that an eighth annular protrusion (290) is formed on the upper end surface of the base meter cover plate (29), the lower end surface of the transparent shell (18) protrudes downwards to form a fifth annular protrusion (181) and a seventh annular protrusion (183), a snap-fit protrusion (182) is formed on the outer side of the fifth annular protrusion (181), the seventh annular protrusion (183) is located inside the fifth annular protrusion (181), the seventh annular protrusion (183) encloses a receiving cavity with an opening at the lower part for receiving an LCD display screen (251) on the circuit board (25), when the transparent shell (18) is snapped over the base meter cover plate (29), the eighth annular protrusion (290) and the fifth annular protrusion (181) are tightly fitted together, a sealing ring is arranged between the eighth annular protrusion (290), a pit matched with the snap-fit protrusion (182) is formed on the eighth annular protrusion (290), the LCD display screen (251) is enclosed in the middle of the seventh annular protrusion (183), a certain gap is formed between the tail end of the seventh annular protrusion (183) and the circuit board (25), and AB glue can flow through the gap.
5. The multi-functional encapsulating structure of a water meter of claim 4, characterized in that the transparent shell (18) is provided with a fourth encapsulating hole (185).
6. The multi-functional encapsulating structure of the water gauge of claim 1, characterized by further comprising a battery compartment (26), the base meter cover plate (29) is provided with a battery cavity (294) with a downward opening, the battery compartment (26) is a cavity structure with an upper opening, the battery compartment (26) is connected with the base meter cover plate (29) in a snap-fit manner and forms a sealed cavity for accommodating the battery (27) with the battery cavity (294), and the battery compartment (26) is located outside the mounting hole (321).
7. The multi-functional encapsulating structure of the water meter of claim 6, characterized in that a second snap-fit protrusion (261) is formed on the outer wall of the battery compartment (26), and a concave pit matched with the second snap-fit protrusion (261) is formed on the base cover plate (29).
8. The multi-functional encapsulating structure of the water gauge of claim 7, characterized in that, there is a seal ring between the said battery compartment (26) and the base cover plate (29), the said battery compartment (26) is filled with nanometer paste to seal the battery (27) too much.
9. The multi-functional encapsulating structure of a water meter of claim 8, characterized in that the upper side of the base meter cover plate (29) is provided with a first encapsulating hole (298) communicated with the battery cavity (294).
10. The multi-functional potting compound structure of a water meter in claim 9, wherein the fourth potting compound hole (185) is located vertically above the first potting compound hole (298).
CN202010038822.4A 2020-01-14 2020-01-14 Multifunctional glue filling structure of water meter Pending CN111157058A (en)

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CN202010038822.4A CN111157058A (en) 2020-01-14 2020-01-14 Multifunctional glue filling structure of water meter

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Application Number Priority Date Filing Date Title
CN202010038822.4A CN111157058A (en) 2020-01-14 2020-01-14 Multifunctional glue filling structure of water meter

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114802426A (en) * 2022-06-02 2022-07-29 阿维塔科技(重庆)有限公司 Power-assisted motor and protection method for electronic and electric appliance parts thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114802426A (en) * 2022-06-02 2022-07-29 阿维塔科技(重庆)有限公司 Power-assisted motor and protection method for electronic and electric appliance parts thereof

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