CN113989986A - Mechanical key device for gear-driven fluid meter - Google Patents
Mechanical key device for gear-driven fluid meter Download PDFInfo
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- CN113989986A CN113989986A CN202111252428.1A CN202111252428A CN113989986A CN 113989986 A CN113989986 A CN 113989986A CN 202111252428 A CN202111252428 A CN 202111252428A CN 113989986 A CN113989986 A CN 113989986A
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- water
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- valve
- key device
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F15/00—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity
- G07F15/06—Coin-freed apparatus with meter-controlled dispensing of liquid, gas or electricity with means for prepaying basic charges, e.g. rent for meters
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L9/00—Cryptographic mechanisms or cryptographic arrangements for secret or secure communications; Network security protocols
- H04L9/38—Encryption being effected by mechanical apparatus, e.g. rotating cams, switches, keytape punchers
Abstract
A mechanical key device for use in a geared fluid meter. The magnetic field direction generated by two adjacent magnetic nodes is parallel. The mechanical secret key device not only thoroughly avoids the phenomenon of committing personal gains for personal gains in water purchasing and water consumption management, but also enables a water affair management center to accurately and scientifically manage water meters in the jurisdiction range through the Internet by adopting a scientific structural design and an intelligent encryption and decryption structure, and realizes an internet of things management mode of accurate, real-time, real and rapid transmission of water selling data in the water supply process.
Description
Technical Field
The invention relates to a cipher device, in particular to an encryption device with a mechanical type for a gas or civil water meter.
Background
In the prior art, a method for treating water by using a prepaid manner for a user is basically completed by the following steps:
firstly, a user goes to a card selling point appointed by a supervisor company (a water supply company) to purchase an IC rechargeable card, and charges the amount of money corresponding to water with a set amount (measured by a cube) which can be purchased into the IC rechargeable card according to the requirement;
and secondly, interconnecting the IC rechargeable card with a corresponding mechatronic IC card metering meter (also called IC card prepayment water meter or IC card water meter) in a contact or non-contact manner, so as to start the meter to work (namely, the meter opens a water valve and supplies the set amount of water recorded on the IC rechargeable card to the user).
And thirdly, when the set quantity on the IC rechargeable card is used up, the meter is closed, and the water output is stopped.
The above prepayment method has the following defects (taking a prepayment water meter as an example):
1) no matter a non-contact IC card water meter or a contact IC card water meter, online recharging cannot be realized, a user needs to carry a user card to a specified water selling point for recharging during recharging, the water purchasing time and place are limited, the recharging waiting time is long, and great inconvenience is brought to the daily life of the user.
2) The IC card water meter is difficult to avoid the problem of charging fraud (very few managers for committing personal gains for personal gains are in charge of personal gains with the right, and the water purchasing users are charged less and more through big heads and small tails to achieve the purpose of being bribed).
3) The IC card water meter can not synchronize the water consumption of a user to a background due to the fact that the water quantity is purchased in advance, so that long-term financial account hanging of a tap water company is caused (accounting processing of pre-receivable accounts is recorded as 'debt', so that 'income' cannot be confirmed), financial accounting is seriously influenced, and monitoring and management of water consumption data of the user are inconvenient.
4) The IC card water meter is an individual working independently, the background cannot monitor the IC card water meter, the fault of the water meter can be found only when a user reports or inspects the water meter, and the fault cannot be found and eliminated in time, so that the disconnection between the meter end and the background management system is caused.
5) The IC recharging card is easy to damage under strong magnetic interference, inconvenient to carry and easy to lose.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a mechanical key device for a gear-driven fluid meter, which is matched with a direct-reading water meter one by one and integrally assembled together, and the water purchasing quantity needs to be accurately set through a decoding device.
In order to solve the technical problems, the invention adopts the technical scheme that:
the invention discloses a mechanical key device used in a gear-driven fluid meter, which is characterized in that: the magnetic field direction generated by two adjacent magnetic nodes is parallel.
The geometric shape of the magnetic nodes is a point, a line or a plane.
On the top surface of the solid member, the polarities of adjacent two magnetic nodes may be the same or different.
The magnetic nodes generate magnetic fields with directions perpendicular to the top surface of the solid member.
On the solid component, the area graph formed by all the magnetic nodes is a regular polygon, an ellipse, a circle or a set special-shaped graph with a streamline boundary line.
The solid component is arranged in a shell of a meter for pre-selling and metering gas or domestic water, an installation position for placing the solid component is arranged in the shell, a pressure rod is arranged between an installation surface of the installation position and the solid component, one end of the pressure rod is connected to a support in the shell in a hinged mode, the other end of the pressure rod is connected with a setting mechanism for setting the pre-selling amount of the gas or the domestic water, a compression spring is arranged between the pressure rod and the installation surface, an unlocking component which is arranged on the pressure rod and has the same layout and magnetic polarity with magnetic nodes on the solid component is placed outside the shell of the meter, and the solid component moves downwards to trigger a recharging transmission shaft and a valve opening transmission shaft in the setting mechanism to be in a settable state.
The upper ends of the recharging transmission shaft and the valve opening transmission shaft are respectively arranged in corresponding arrangement holes arranged on the shell.
The mechanical key device for the gear-driven fluid meter not only thoroughly avoids the phenomenon of committing personal gains in water purchasing and water consumption management, but also enables a water affair management center to accurately and scientifically manage water meters in the jurisdiction range through the Internet by adopting a scientific structural design and an intelligent encryption and decryption structure, and realizes an Internet of things management mode of accurate, real-time, real and rapid transmission of water selling data in the water supply process.
Drawings
Fig. 1 is a schematic external view of an integrated water meter using the key device of the present invention.
Figure 2 is a schematic view of the target water meter of figure 1.
FIG. 3 is a schematic view of the pre-purchase apparatus of FIG. 1.
Fig. 4 is a top view of fig. 3.
Fig. 5 is a top right view of fig. 3 with the top clamping plate removed.
Fig. 6 is a top right plan view of fig. 3.
Fig. 7 is a bottom left plan view of fig. 3.
Fig. 8 is a bottom view of fig. 7.
Fig. 9 is a view of the internal components with the frame removed.
Fig. 10 is a top left view of fig. 9.
Fig. 11 is a top view of fig. 10 rotated 45 degrees clockwise.
Fig. 12 is a schematic view showing the position of connection of the valve opening gear and the water supply valve.
FIG. 13 is a schematic view showing the connection positions of the charge transmission shaft and the charge gear and the valve opening transmission shaft and the start gear.
Fig. 14 is a rear view of fig. 13.
The reference numbers are as follows:
the integrated water meter 1, the upper housing 11, the lower housing 12, the water inlet end 13, the water outlet end 14, the target water meter 2, the water use character wheel set 21, the dial 22, the synchronous transmission gear 23, the pre-purchase device 3, the water purchase display window 31, the water purchase character wheel set 32, the annular cylinder 321, the zero pit 322, the setting hole 33, the counting down gear 34, the frame 4, the upper clamping plate 41, the numerical value setting hole 411, the valve opening setting hole 412, the positioning base plate 42, the double-pier bridge 43, the bridge plate 431, the bridge pier 432, the water passage 433, the numerical value setting assembly 5, the charging transmission shaft 51, the charging gear 52, the valve assembly 6, the valve opening transmission shaft 61, the starting gear 62, the steering gear 63, the valve opening wheel 64, the steering driven wheel 641, the unlocking/locking wheel 642, the valve opening gear 643, the water supply valve 65, the valve rod 651, the valve body 652, the transverse rack 653, the speed change gear set 66, the fulcrum shaft 7, the rotating cylinder 71, the gear 72, the gear, The key assembly comprises a return spring 73, a trigger valve closing assembly 8, a balance plate 81, an abutting claw 82, a clamping groove 83, a pressing block 84, a sleeve spring rod 841, a pressing spring 85, a key assembly 9, a solid member 91, a magnetic node 911, a pressing rod 92, a main rod 921, a shaft end 922, a pressing handle 923, a key spring 93, a key concave position 94 and a key shaft frame position 95.
Detailed Description
The mechanical key device for the gear-driven fluid meter is explained by a direct-reading water meter applying the mechanical key device.
As shown in fig. 1 to 14, a direct-reading water meter (hereinafter referred to as a target water meter 2) and a device for setting a pre-purchased water amount value (hereinafter referred to as a pre-purchasing device 3) are organically connected and integrated together, the pre-purchasing device 3 and the target water meter 2 are paired one by one, that is, a key assembly 9 for identifying the target water meter 2 is provided in the pre-purchasing device 3, and a password corresponding to the target water meter 2 is embedded in the key assembly 9.
The pre-purchasing device 3 and the target water meter 2 (see figure 2) are integrally arranged in a machine shell formed by hermetically connecting an upper surface shell 11 and a lower surface shell 12, and the machine shell is provided with a water inlet end 13 connected with a municipal water supply network pipe and a water outlet end 14 connected with a water pipe for a user.
As shown in fig. 1, a glass seal for viewing the number value of the water use character wheel set 21 and each pointer plate 22 is provided in an area of the upper case 11 corresponding to the target water meter 2, and a water purchase number display window 31 for viewing the number value of each character wheel in the water purchase character wheel set 32 and a setting hole 33 for setting the water purchase number value and opening the water supply valve 65 are provided in an area of the upper case 11 corresponding to the pre-purchase device 3.
As shown in fig. 3, 4, 5 and 6, the pre-purchasing device 3 includes a water purchasing character wheel set 32 installed on the rack 4 for displaying the water purchasing quantity, a value setting component 5 of the water purchasing character wheel set 32, a valve component 6 arranged on the water meter outlet leading to the water pipeline of the user to be opened or closed, a triggering valve component 8 when the value of the water purchasing character wheel set 32 is zero, a key component 9 for opening the value setting component 5 and the valve component 6 according to the starting password configured to the target water meter 2 by the water management center, and a counter gear 34 for synchronously driving the character wheel in the water purchasing character wheel set 32 to rotate reversely according to the water consumption of the target water meter 2.
A frame 4
The rack 4 and the target water meter 2 are arranged in parallel in the accommodating cavity of the lower meter shell 12, and the rack 4 is sequentially divided into an upper clamping plate 41, a positioning substrate 42 and a double-pier bridge 43 from top to bottom (with the paper surface direction of fig. 1 as reference, the upper part of the paper surface is upper, the lower part of the paper surface is lower, and the same is lower, the threaded pipe orifice on the left side in fig. 1 is a water inlet end 13, and the threaded pipe orifice on the right side in fig. 1 is a water outlet end 14). The top surfaces and the bottom surfaces of the upper clamping plate 41 and the positioning base plate 42 are provided with a plurality of concave positions, slot positions, hole positions, shaft bracket positions for bearing shaft ends 922, positioning columns and fastening holes, wherein the concave positions, the slot positions and the hole positions are different in size and depth and are used for mounting different parts, and the positioning columns and the fastening holes are used for accurately butting the upper clamping plate 41, the positioning base plate 42 and the double-pier bridge 43.
1. The upper clamp plate 41, which is a one-step molded part, is fastened on the positioning substrate 42, and is provided with a water purchase display window 31 on the rear side of the top surface (taking the pre-purchase device 3 in fig. 3 as an example, the lower left direction is the left side, the upper right direction is the right side, the upper left direction is the rear side, the lower right direction is the front side, and the same below) for observing the number of each character wheel in the water purchase character wheel set 32, the concave position (called key concave position 94) and the shaft holder position (called key shaft holder position 95) of the installation key assembly 9 occupy the area from the middle to the left side of the upper clamp plate 41, and the hole site for installing the number setting assembly 5 is arranged on the right side of the upper clamp plate 41 (see fig. 3, 4, and 6).
2. The positioning base plate 42, which is a one-piece molded member, is mounted on a double pier bridge 43 (see fig. 5).
The water purchasing wheel set 32 is arranged at the rear side of the positioning base plate 42, the valve assembly 6 is arranged at the front side of the positioning base plate 42, and the trigger valve assembly 8 is arranged in the middle of the positioning base plate 42 and between the valve assembly 6 and the water purchasing wheel set 32.
3. The double pier bridge 43 (see fig. 5, 6, and 7) is a one-piece molded member, which is integrally formed by two piers 432 and a bridge plate 431, and the bridge plate 431 connects the top ends of the two piers 432 together. The two piers 432 are arranged in parallel and erected in the lower housing 12 corresponding to the front side and the rear side of the positioning base plate 42, respectively, and a water passing channel 433 is formed between the piers, which flows into the target water meter 2 from the water inlet end 13 and then flows to the water outlet end 14 through the purchasing device 3. A water meter outlet communicated with the water outlet end 14 is arranged on the lower casing 12 corresponding to the water passage 433, a water supply valve 65 (a valve position hole is arranged on the bridge plate 431, and the upper half part of a valve rod 651 of the water supply valve 65 is inserted into a valve position cavity arranged on the bottom surface of the positioning base plate 42 through the valve position hole upwards) in the valve assembly 6 is arranged in the water passage 433, and the valve body 652 on the water supply valve can block the water meter outlet after falling.
The pier 432 is a pier body having a hollow chamber and an open bottom end surface, and the inner hollow volume of the hollow chamber (which is the space volume in the hollow chamber) is approximately 10% -20% of the space volume occupied by the accumulated gap in the inner space after the upper and lower shells 11 and 12 are combined together. The cumulative gap is a sum of an inner space formed by combining the upper surface case 11 and the lower surface case 12 minus a space occupied by the rack 4 and each component provided in the inner space (see fig. 8).
Set up pier 432 to have the hollow cavity of certain volume and can effectively prevent under the cold weather because of the freezing inflation of surface normal water leads to the phenomenon of the table body to burst to take place, promptly under the condition of no water, along with the reduction of temperature, the water that the space in the water gauge was stored can be used for alleviating to the pressure that the table body produced because of freezing inflation to hollow cavity, and its principle is: when the water stored in the water meter is converted from liquid to solid, the expansion force generated by the water meter is gradually increased, so that the pressure in the space in the water meter is increased, and the hollow cavity of the bridge pier 432 is filled with normal-pressure air, therefore, the unfrozen water is extruded from the high-pressure space to the low-pressure space under the condition that the pressure in the water meter is gradually increased, namely, part of the water can be extruded into the hollow cavity, so that the volume of the water stored in the space in the water meter is effectively reduced, and the volume of the space in the water meter under the condition of phase change and ice formation is increased.
Two, buy water word wheelset 32
Three character wheels are arranged on the hand wheel, which are respectively the character wheels for measuring the cubic number of hundreds, the cubic number of tens and the cubic number of units (more bits can be arranged), and two adjacent character wheels are meshed and connected through a position advancing wheel. The circumferential wall of each character wheel is provided with ten numbers of 0-9, each character wheel corresponds to one water purchase number display window 31, namely, only the number of the character wheel, which is opposite to the water purchase number display window 31, can be clearly seen through the water purchase number display window 31.
As shown in fig. 9, 10 and 14, the unit character wheel of the water purchasing character wheel set 32 is connected to the reverse gear 34 through a character wheel shaft (the reverse gear 34 is disposed on the left side of the positioning base plate 42 of the pre-purchasing device 3), the reverse gear 34 is meshed with the synchronous transmission gear 23 (see fig. 2) in the target water meter 2, the synchronous transmission gear 23 is meshed with the unit character wheel of the water using character wheel set 21 of the target water meter 2 through a gear transmission assembly in the target water meter 2, and the transmission ratio between the unit character wheel of the water purchasing character wheel set 32 and the unit character wheel of the water using character wheel set 21 is 1: 1.
the ones number wheel in the water purchasing number wheel set 32 is connected with the reverse gear 34 in a unidirectional rotation way, when the water purchasing quantity of the water purchasing number wheel set 32 is set through the recharging transmission shaft 51, the reverse gear 34 does not rotate, and when the ones number wheel in the water purchasing number wheel set 21 of the target water meter 2 rotates, the reverse gear 34 drives the counting reverse rotation of the ones number wheel of the water purchasing number wheel set 32. That is, when the water use character wheel set 21 normally uses water to add in the positive direction, the water purchase character wheel set 32 counts down the number of the subtraction in synchronization.
The three character wheels are provided with annular cylinders 321 extending outwards along the character wheel shaft on the side surface with the driving carry teeth, the annular cylinders 321 are coaxial with the character wheel shaft, and each annular cylinder 321 is provided with a pit which is sunken towards the character wheel shaft along the radial direction and is called a zero pit 322 hereinafter. When the value of "0" on the corresponding print wheel is opposite to the water purchasing number display window 31, the opening of the zero position pit 322 is opposite to the feeler of the touch switch component in the touch switch valve component 8 (the touch switch component and the feeler are respectively the balance plate 81 to be described later and the claw head of the contact claw 82 arranged on the balance plate 81), when the numbers on the three print wheels are all "0" (namely the purchased water is used up), the contact claw 82 arranged opposite to the three zero position pits 322 deflects to the direction of the water purchasing print wheel set 32, so that the three claw heads on the contact claw 82 are simultaneously inserted into the corresponding zero position pits 322, thereby the balance plate 81 touches the valve component 6 to close the water supply valve 65.
When one of the three character wheels is not reset to zero (that is, the water purchased by the user is not used up), the claw head corresponding to the character wheel abuts against the cylinder wall (the cylinder wall outside the zero-position pit 322) of the annular cylinder 321 of the character wheel, and because the contact claw 82 is of an integral structure, although the other two claw heads are opposite to the zero-position pit 322 corresponding to the other two claw heads, the whole contact claw 82 cannot deflect towards the direction of the water purchasing character wheel set 32, and the water supply valve 65 cannot be triggered to close.
Third, the value sets up the assembly 5
As shown in fig. 5-14, when a user needs to purchase a certain cube of water, the key component 9 is decrypted by the decoding component, and then set by the value setting component 5, and after the setting is completed, the value in the purchase water character wheel group 32 is displayed as the cube corresponding to the purchased water amount.
The value setting unit 5 is composed of a charge drive shaft 51 and a value setting gear group.
1. The charge transmission shaft 51 is composed of three parts, namely a fulcrum shaft 7, a rotary drum 71 and a return spring 73 (which is a compression spring).
1) Support shaft 7 is inserted into a numerical value setting hole 411 provided in upper plate 41, and numerical value setting hole 411 is coaxial with corresponding setting hole 33 provided in upper case 11. The support shaft 7 is divided into three sections from top to bottom, namely a rotary handle section, a rotary rod section and an end shaft section.
The lower half part of the rotary handle section is a column shaft, the upper half part of the rotary handle section upwards extends into the corresponding arrangement hole 33, a plurality of vertical anti-skidding grooves are formed in the peripheral wall of the upper half part, and during arrangement, a special tool (the special tool can be intelligently controlled and can also be manually operated) is inserted into the arrangement hole 33 and sleeved on the rotary handle section to screw the rotary handle section so as to rotate the fulcrum shaft 7.
The cross section of the rotating rod section is in an ellipse, a kidney or a regular polygon, and the length of the rotating rod section is slightly larger than the stroke length of the up-and-down movement of the rotating cylinder 71 sleeved on the rotating rod section.
The end shaft section is a thin shaft with a cylindrical cross section, and the lower end of the end shaft section penetrates through the upper clamping plate 41 downwards and is inserted into a positioning shaft hole arranged on the positioning base plate 42.
2) The rotary drum 71, as an organic whole component, it divides a section of thick bamboo and a lower section of thick bamboo from top to bottom, goes up a section of thick bamboo top end face and is uncovered, is equipped with the annular edge of outside extension on uncovered (the trepanning of the handle 923 of pressing in the key subassembly 9 is epaxial and the butt is in the last anchor ring on this annular edge of the column of revolving handle section, and the following is mentioned), and the bottom face of a lower section of thick bamboo is the closing surface, is equipped with on the bottom face and can allow the round hole that the end axle section passed.
The cross-sectional shape of the axial through-hole in the rotor 71 is the same as the cross-sectional shape of the rotor segment, and the axial through-hole therein may extend from the upper barrel to the lower barrel or may be provided only in the upper barrel portion.
The outer peripheral wall of the upper cylinder is a circular smooth surface, and the outer peripheral wall of the lower cylinder is provided with gear teeth 72, and the gear teeth 72 can be partially arranged between the opening of the numerical value setting hole 411 and the positioning base plate 42 through the numerical value setting hole 411.
During installation, the rotary drum 71 is sleeved on the rotary rod section from the lower end of the end shaft section upwards, the rotary drum 71 can be rotated by screwing the rotary handle section, and the rotary drum 71 can move downwards on the rotary rod section if pressed.
3) The return spring 73 is a compression spring, which is sleeved on the end shaft section and between the bottom end surface of the drum 71 and the positioning substrate 42, and has a function of pushing the drum 71 to move upward along the rotating rod section after the force pressing on the drum 71 is released.
2. The value setting gear set is composed of the charge gear 52 and the gear teeth 72 on the outer wall of the drum 71 of the charge transmission shaft 51.
The recharging gear 52 is arranged between the positioning base plate 42 and the upper clamping plate 41, the recharging gear 52 is divided into disc teeth and shaft teeth, the disc teeth of the recharging gear 52 are meshed with the gear teeth 72 on the outer wall of the rotary drum 71 after the rotary drum 71 of the recharging transmission shaft 51 is pressed to move downwards, and the shaft teeth of the recharging gear 52 are meshed with the carry driven teeth of the one-digit character wheel in the water purchasing character wheel set 32.
3. The working principle of the value setting assembly 5 is as follows:
when the rotary drum 71 sleeved on the rotary rod section is pressed down by the pressing handle 923 in the key assembly 9, the rotary drum 71 and the rotary rod section are still in an occluded state (namely, the stroke of the rotary drum 71 pressed down and moved is less than the length of the rotary rod section), the rotary rod section can drive the rotary drum 71 to rotate, and the gear teeth 72 on the outer wall of the rotary drum 71 are meshed with the recharging gear 52, so that the recharging gear 52 also rotates along with the rotary drum, and therefore, the shaft teeth on the rotary drum are driven to stir the carry driven teeth of the single character wheel in the water purchasing character wheel set 32 to rotate, so that the character wheel in the water purchasing group rotates, and the purpose of setting the water purchasing amount is achieved.
When the pressing handle 923 is released, the drum 71 moves upward by the restoring force of the return spring 73 and the gear teeth 72 on the outer wall thereof are disengaged from the charge gear 52, and at this time, if the knob section is further screwed, the drum 71 idles in the numerical value setting hole 411.
As shown in fig. 5 to 14, the valve assembly 6 includes the valve-opening transmission shaft 61, the valve gear assembly, and the water supply valve 65. The valve-opening transmission shaft 61 opens the water supply valve 65 after opening the key assembly 9 by means of a valve-involving gear assembly.
1. And the valve-opening transmission shaft 61 is parallel to the recharging transmission shaft 51, and has the same structure and composition as the recharging transmission shaft 51.
It is also composed of three components, a fulcrum shaft 7, a drum 71, and a return spring 73 (which is a compression spring).
1) The support shaft 7 is inserted into a valve opening installation hole 412 provided in the upper plate 41, and the valve opening installation hole 412 is coaxial with a corresponding installation hole 33 provided in the upper case 11. The support shaft 7 is divided into three sections from top to bottom, namely a rotary handle section, a rotary rod section and an end shaft section.
The lower half part of the rotary handle section is a column shaft, the upper half part of the rotary handle section upwards extends into the corresponding arrangement hole 33, a plurality of vertical anti-skidding grooves are formed in the peripheral wall of the upper half part, and during arrangement, a special tool (the special tool can be intelligently controlled and can also be manually operated) is inserted into the arrangement hole 33 and sleeved on the rotary handle section to screw the rotary handle section so as to rotate the fulcrum shaft 7.
The cross section of the rotating rod section is in an ellipse, a kidney or a regular polygon, and the length of the rotating rod section is slightly larger than the stroke length of the up-and-down movement of the rotating cylinder 71 sleeved on the rotating rod section.
The end shaft section is a thin shaft with a cylindrical cross section, and the lower end of the end shaft section penetrates through the upper clamping plate 41 downwards and is inserted into a positioning shaft hole arranged on the positioning base plate 42.
2) The rotary drum 71 is an integral member and is divided into an upper drum and a lower drum from top to bottom, the top end face of the upper drum is open, an outwardly extending annular edge is arranged on the open, the bottom end face of the lower drum is a closed face, and a circular hole allowing the end shaft section to pass through is arranged on the bottom end face.
The cross-sectional shape of the axial through-hole in the rotor 71 is the same as the cross-sectional shape of the rotor segment, and the axial through-hole therein may extend from the upper barrel to the lower barrel or may be provided only in the upper barrel portion.
The outer peripheral wall of the upper cylinder is a circular smooth surface, and the outer peripheral wall of the lower cylinder is provided with gear teeth 72, and the gear teeth 72 are partially inserted through the valve opening setting hole 412 between the opening of the valve opening setting hole 412 and the positioning base plate 42.
During installation, the rotary drum 71 is sleeved on the rotary rod section from the lower end of the end shaft section upwards, the rotary drum 71 can be rotated by screwing the rotary handle section, and the rotary drum 71 can move downwards on the rotary rod section if pressed.
3) The return spring 73 is a compression spring, which is sleeved on the end shaft section and between the bottom end surface of the drum 71 and the positioning substrate 42, and has a function of pushing the drum 71 to move upward along the rotating rod section after the force pressing on the drum 71 is released.
2. The valve gear assembly is composed of a starting gear 62, a speed change gear group 66, a steering gear 63, a valve opening wheel 64 and the gear teeth 72 on the outer wall of the drum 71 of the valve opening transmission shaft 61.
1) And a starting gear 62 disposed between the positioning base plate 42 and the upper clamp plate 41 and having a plurality of disk teeth and shaft teeth, wherein the disk teeth of the starting gear 62 are engaged with the gear teeth 72 on the outer wall of the drum 71 after the drum 71 of the valve-opening transmission shaft 61 is pressed and moved downward.
2) A speed change gear set 66, which is arranged between the positioning base plate 42 and the upper clamping plate 41 and is formed by meshing a primary reduction gear and a secondary reduction gear, wherein the primary reduction gear is divided into a disc tooth and an axial tooth, and the secondary reduction gear is a disc tooth; the disk teeth of the primary reduction gear are externally engaged with the shaft teeth of the starting gear 62, and the shaft teeth thereof are externally engaged with the secondary reduction gear.
3) And a steering gear 63 disposed between the positioning base plate 42 and the upper clamp plate 41, having a split gear and a shaft gear, and having a split gear externally engaged with the secondary reduction gear.
4) The valve opening wheel 64 is disposed in a hole penetrating the positioning substrate 42, and is mounted in the hole through a valve opening wheel shaft parallel to the wheel unit 32, the upper half portion and the lower half portion of the valve opening wheel 64 are respectively exposed on the top surface and the bottom surface of the positioning substrate 42, and the valve opening wheel 64 is an integral component, and is divided into three parts, namely a steering driven wheel 641, an unlocking/locking wheel 642 and a valve opening gear 643, which are sequentially disposed from left to right of the positioning substrate 42.
The driven steering wheel 641 is a four-eight cone having a face perpendicular to the positioning base plate 42, and teeth thereon are engaged with axial teeth of the steering gear 63 to convert the rotational driving force of the steering gear 63 in the horizontal plane into the rotation of the driven steering wheel 641 in the vertical plane.
The unlocking/locking wheel 642 is a cam interposed between the driven steering wheel 641 and the valve opening gear 643, and has a tip portion that contacts a pressing piece 84 (described later) provided on the balance plate 81 in the trigger switch valve assembly 8, and when the pressing piece 84 releases the pressing against the tip portion of the cam, the valve opening gear 64 is in a freely rotatable state.
The valve opening gear 643 meshes with a rack on the valve stem 651 of the water supply valve 65 placed on the bottom surface of the positioning base plate 42 by passing the bridge plate 431 upward from below the bridge plate 431.
3. The water supply valve 65 is vertically arranged in a water passing channel 433 formed by two bridge piers 432 and consists of a valve rod 651 and a valve body 652, the upper half part of the valve rod 651 penetrates upwards through a valve position hole arranged on the bridge plate 431 to be inserted into a valve position cavity arranged on the bottom surface of the positioning base plate 42, the wall of the valve position cavity is perpendicular to the positioning base plate 42 and extends downwards, one cavity wall of the valve position cavity opposite to the water purchasing wheel set 32 is an opening, a transverse rack 653 is arranged on the valve rod 651, and the transverse rack 653 is positioned on the opening side and meshed with the valve opening gear 643.
A blind hole that is recessed into the valve stem 651 is provided on the tip end surface of the valve stem 651 (i.e., the surface of the valve stem 651 that contacts the bottom surface of the positioning substrate 42), and a valve closing spring is provided between the blind hole and the bottom surface of the positioning substrate 42.
The valve body 652 is arranged at the lower end of the valve rod 651, and is a gate valve which is positioned right above the water outlet of the water meter.
4. Operating principle of valve assembly 6
When the water supply valve 65 needs to be opened (the valve body 652 of the water supply valve 65 is lifted to be separated from the water meter water outlet in a sealing way), the water purchasing character wheel set 32 is arranged according to the water purchasing quantity of a user, at least one character wheel of the water purchasing character wheel set 32 is in a non-0 state, after the determination, the valve opening transmission shaft 61 is rotated, the valve opening gear 643 is rotated through the linked valve gear set and the valve rod 651 is driven to ascend, at this time, the pressing block 84 on the balance plate 81 in the trigger valve assembly 8 is pressed against the unlocking/locking wheel 642 because of no deflection, the valve opening gear 643 is in a rotation restraining state under the condition of no manual driving, and the valve rod 651 is always in a set position.
On the contrary, as mentioned above, when the numbers of the character wheels in the character wheel group 32 for purchasing water are reset to zero, the three claw heads of the contact claws 82 on the balance plate 81 are inserted into the corresponding zero-position pits 322, so that the balance plate 81 deflects toward the character wheel group 32 for purchasing water, the contact pressing block 84 on the balance plate 81 is driven to be separated from the contact with the unlocking/locking wheel 642, the valve opening gear 643 is not restrained, and at this time, the valve body 652 of the water supply valve 65 is rapidly dropped and blocked on the water outlet of the water meter under the action of the reset force of the valve closing spring and the pressure of the flowing water.
The flowing water pressure comprises the pressure of flowing water and the negative pressure formed by flowing water at the water outlet of the water meter, the pumping force is very large, and the valve body 652 of the water supply valve 65 which is out of restraint can be quickly pulled down and the water outlet of the water meter can be blocked.
Fifth, touch the valve closing assembly 8
As shown in fig. 5-14, the valve closing assembly 8 is triggered, and when the values of all the character wheels in the character wheel purchase group 32 return to zero, the water supply valve 65 is triggered to block the water meter water outlet.
The trigger valve assembly 8 is composed of a balance plate 81, the trigger switch component and a pressing spring 85.
1. The balance plate 81 is an integral member, and its plate surface is vertically installed in a groove provided on the bottom surface of the positioning base plate 42 in a manner parallel to the character wheel shaft of the character wheel group 32, which is interposed between the character wheel group 32 and the valve opening wheel 64.
The interference claw 82 is arranged on the top edge of the balance plate 81, the claw head of the interference claw 82 faces the water purchasing character wheel set 32, and the number of the claw heads is the same as the number of the character wheels in the water purchasing character wheel set 32.
Hanging shafts are arranged on two sides of the bottom edge of the balance plate 81 and are arranged in shaft bracket positions arranged on the bottom surface of the positioning base plate 42, and the balance plate 81 can deflect in a reciprocating mode in the direction from the water purchasing character wheel set 32 to the valve opening wheel 64 around the hanging shafts.
2. The tact switch member is composed of a pressing block 84 and a spring rod 841 which are integrally formed.
1) The pressing block 84 is formed of a rectangular block and a cylindrical rod (also called a spring rod 841) disposed on the rectangular block.
A vertically extending locking groove 83 is provided in the middle of the balance plate 81 on the side opposite to the head of the abutting claw 82 (i.e., the side opposite to the valve opening wheel 64), the upper end surface of the locking groove 83 (i.e., the side opposite to the bottom surface of the positioning base plate 42) is open, the lower end surface thereof is closed, the front side surface thereof (i.e., the side facing the valve opening wheel 64) is open (hereinafter, this opening is referred to as a valve contact window), the pressing piece 84 is inserted into the locking groove 83 and can move up and down in the groove, and the front side surface of the pressing piece 84 (hereinafter, this portion is referred to as a pressing surface) is disposed outside the valve contact window.
2) The spring rod 841 is a cylindrical rod disposed on the upper surface of the pressing block 84, and a redundant distance allowing the pressing block 84 to move up and down in the detent groove 83 is left between the top end surface of the spring rod 841 and the bottom surface of the positioning base plate 42.
3. The pressing spring 85 is a compression spring, and is sleeved on the spring sleeve rod 841 and between the upper end surface of the pressing block 84 and the bottom surface of the positioning substrate 42.
4. Working principle of touch switch valve assembly 8
1) Non-touch closing valve
When the value of the water purchasing character wheel set 32 is not zero, the claw head of the abutting claw 82 abuts against the wall of the annular cylinder 321 of one or some character wheels of the water purchasing character wheel set 32, at this time, the balance plate 81 is not deflected and is in a state of being perpendicular to the positioning base plate 42, and the abutting surface of the abutting block 84 on the balance plate 81 abuts against the peak part on the unlocking/locking wheel 642, so that the valve opening gear 643 is restrained from rotating freely, and the valve rod 651 of the water supply valve 65 is locked in a state of being opened.
2) Touch shut-off valve
When the numerical values of all the character wheels in the character wheel purchasing set 32 are zero, the zero-position pits 322 at the side of each character wheel in the character wheel purchasing set 32 are aligned in a straight line in the character wheel shaft direction, at this time, the claw head of each abutting claw 82 loses the fulcrum, the balance plate 81 deflects to one side of the character wheel purchasing set 32 under the downward reset force of the abutting spring 85, at this time, each claw head is inserted into the corresponding zero-position pit 322, the abutting block 84 on the balance plate is also deflected to the character wheel purchasing set 32 side along with the deflection of the balance plate 81, so that the abutting surface on the abutting block 84 is disengaged from the abutting connection with the unlocking/locking wheel 642, namely, the abutting surface is disengaged from the abutting constraint of the tip part of the unlocking/locking wheel 642, and the valve opening gear 643 which is not constrained is disengaged, as described above, so that the water supply valve 65 blocks the water outlet of the water meter.
Sixthly, a key component 9
As shown in fig. 2, 3, 4, 5, 9, 10, and 11, the key assembly 9 is composed of a pressing rod 92 and a solid member 91.
A recess is provided in the middle region of the upper surface of upper plate 41 in which key assembly 9 is mounted. It consists of a pressure bar 92 with an integrated structure and a solid member 91 embedded with a plurality of magnetic nodes 911.
The body part of the solid member 91 is made of a non-magnetic material, the magnetic node 911 is embedded in the non-magnetic material, the non-magnetic material is preferably a plastic material, and the magnetic node 911 is preferably made of a magnetic material such as neodymium iron boron, samarium cobalt, ferrite and the like. The solid member 91 is in the shape of a regular polygon, an ellipsoid or a cylinder, and the directions of the magnetic fields generated by two adjacent magnetic nodes 911 are parallel. The magnetic field generated by the magnetic node 911 is preferably oriented perpendicular to the top surface of the solid member.
1. The pressure lever 92 is lever-shaped, one end (left end, end close to the target water meter 2) of which is a shaft end 922, the middle part of which is a main lever 921, and the other end (right end, end close to the value setting assembly 5) of which is a touch end with two pressure handles 923.
2. The solid member 91, preferably a rectangular body, is adapted to be mounted in the recess and pressed against the main lever 921, and under the condition of no external force applied downwards, a right portion of the solid member 91 is in a suspended state in the recess (i.e. a certain gap is formed between the bottom surface of the solid member and the upper clamping plate 41 in the recess) under the action of the key spring 93, and correspondingly, the two pressing handles 923 are also in an upper limit position on the charge transmission shaft 51 and the valve-opening transmission shaft 61, at this time, the gear teeth 72 on the outer wall of the drum 71 of the charge transmission shaft 51 are disengaged from the charge gear 52, and similarly, the gear teeth 72 on the outer wall of the drum 71 of the valve-opening transmission shaft 61 are disengaged from the opening gear.
The magnetic nodes 911 on the solid member 91 may be points, lines or planes with regular geometric shapes, the magnetic poles of two adjacent magnetic nodes 911 may be the same or different, and the direction of the magnetic field generated by the magnetic poles is preferably perpendicular to the top surface of the solid member 91.
The area pattern formed by arranging the plurality of magnetic nodes 911 can be a rectangle, an ellipse, a circle, other regular polygons or a set irregular pattern with streamline boundary lines.
3. Working principle of the key component 9
When the upper case 11 and the lower case 12 are assembled together, the layout of the magnetic nodes 911 on the solid member 91 (including the arrangement of the magnetic poles of the magnetic nodes 911 and the arrangement of the positions of the magnetic nodes 911) is covered by the upper case 11, and in the natural state, the portion of the solid member 91 close to the numerical value setting assembly 5 is in a half-suspended state, and at this time, the charge transmission shaft 51 and the valve opening transmission shaft 61 are released to be in a free rotation state (the gear teeth 72 on the charge transmission shaft are disengaged from the corresponding charge gear 52 or the start gear 62). That is, no downward force can be applied to the solid member 91 in the watch by anyone without opening the upper case 11, and therefore, the water purchase amount cannot be set, and the water supply valve 65 cannot be opened to supply water, i.e., to play a role of encryption.
When the manager places the special decryptor interconnected with the water management center on the watch case 11, the special decryptor (which may adopt a device with several magnetic sensors) detects the layout state of the magnetic nodes 911 on the solid member 91, and at the same time, generates the same layout of the magnetic nodes 911 (i.e. a certain magnetic node 911 on the solid member 91 is N-pole, so the magnetic pole of the node corresponding to the magnetic node 911 on the special decryptor is also N-pole), at this time, under the action of the same polarity repulsion, the solid member 91 moves downwards and causes the pressing handle 923 sleeved on the recharging transmission shaft 51 and the opening transmission shaft 61 to move the corresponding rotary drum 71 downwards, and finally the gear teeth 72 on the outer wall of the rotary drum 71 are meshed with the corresponding recharging gear 52 or the starting gear 62.
The magnetic node 911 layout on the solid member 91 can also be known through a water service management center, that is, the special decryptor uploads the code of the integrated water meter 1 to the water service management center, then the water service management center sends the magnetic node 911 layout information of the integrated water meter 1 to the special decryptor, and then the special decryptor sets the same magnetic node 911 layout.
Claims (7)
1. A mechanical key device for use in a geared fluid meter, comprising: the magnetic field direction parallel connection type solid component is a solid component (91) which is formed by a non-magnetic material and a plurality of magnetic nodes (911) embedded in the non-magnetic material and is of an integral structure, the solid component (91) is in the shape of a regular polygon, an ellipsoid or a cylinder, and the magnetic field directions generated by two adjacent magnetic nodes (911) are parallel.
2. The mechanical key device for use in a geared fluid meter according to claim 1, wherein: the geometry of the magnetic node (911) is a point, line or plane.
3. The mechanical key device for use in a geared fluid meter according to claim 2, wherein: on the top surface of the solid member (91), the polarities of the adjacent two magnetic nodes (911) may be the same or different.
4. The mechanical key device for use in a geared fluid meter according to claim 3, wherein: the magnetic node (911) generates a magnetic field in a direction perpendicular to the top surface of the solid member (91).
5. The mechanical key device for use in a geared fluid meter according to claim 4, wherein: the area pattern formed by arranging all the magnetic nodes (911) on the solid member (91) is a regular polygon, an ellipse, a circle or a set special-shaped pattern with streamline boundary lines.
6. The mechanical key device for use in a geared fluid meter according to claim 5, wherein: the solid member (91) is arranged in a shell of a meter for pre-selling and metering gas or domestic water, an installation position for placing the solid member (91) is arranged in the shell, a pressure rod (92) is arranged between an installation surface of the installation position and the solid member (91), one end of the pressure rod (92) is connected to a support in the shell in a hinged mode, the other end of the pressure rod (92) is connected with a setting mechanism for setting the pre-selling amount of the gas or the domestic water, a compression spring is arranged between the pressure rod (92) and the installation surface, an unlocking member which is provided with a magnetic node (911) on the solid member (91) and has the same layout and magnetic polarity is arranged outside the shell of the meter, and the solid member (91) moves downwards to trigger a recharging transmission shaft and a valve opening transmission shaft in the setting mechanism to be in a settable state.
7. The mechanical key device for use in a geared fluid meter according to claim 6, wherein: the upper ends of the recharging transmission shaft and the valve opening transmission shaft are respectively arranged in corresponding arrangement holes arranged on the shell.
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| CN202111252428.1A CN113989986B (en) | 2021-10-27 | 2021-10-27 | Mechanical key device for gear-driven fluid meter |
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