CN2328989Y - Anti-magnet sensing water meter - Google Patents

Abstract

The utility model relates to an anti-magnet sensing water meter, which comprises meter cases which are hinged, a filter screen which is arranged in a meter cover, an impeller part, a magnetic steel, a gear set, a transparent cover, a counter, and a signal sensing element which is used for transmitting the counting, wherein, the sensing element can strike a neighboring mechanical switch through a raised point on a pointer, and the mechanical switch is connected to a secondary meter through a wiring terminal which is arranged in a wiring cover and a derivative signal wire which is connected with the wiring terminal. The mechanical switch can be a microswitch, or a reed switch which is composed of a rotor plate, a normally closed stator plate, and a normally open stator plate. Because the sensing element adopts the mechanical switch with the anti-magnet property, the interference of an external magnetic field can be avoided, and the accuracy of output signals can be improved. Because no power is required, the range of application is enlarged.

Description

Antimagnetic sensing water meter

The utility model relates to the water meter that streamflow that a kind of energy will flow through water meter changes into certain telltale.

Domestic meter is mounted on the interior conduit, observe water consumption for the user, and summary table is mounted on the outdoor inlet channel, regularly check meter for Running-water Company, because pipeline is underground trend, summary table just can't exposed surface, brings very big inconvenience to the person of checking meter, especially can only estimate the number of degrees by rule of thumb when summary table is flooded by sewage, obviously be irrational.For the ease of checking meter, people have designed the secondary table, and improve under the prerequisite of mechanical reading keeping once showing, making once, the number of degrees of table are reflected on the secondary table, for this reason, once showing the signalization sensing element, pass to remote secondary table by signal wire, and the secondary table can be installed on the wall face of being convenient to copy reading.Have now and can transmit the water meter of signal such as " sensor " that notification number is CN88203725, with the combination of adopting magnet steel and tongue tube as signal sensing element, when the magnet steel on the pointer forward to tongue tube enough apart from the time, under magneticaction, make the sheet metal in the tongue tube be in contact with one another conducting, when being rotated further pointer, magnet steel on the pointer is again away from tongue tube, because magneticaction reduces, sheet metal is restored to the original state, pointer whenever turns around and finishes once " switch " signal, reach the sensing purpose, but this structure is when being subjected to adding big magnetic interference, and just to contact conducting all the time ineffective because of sheet metal, makes the signal of secondary table record and the water yield that actual flow is crossed exist difference, under special circumstances, externally-applied magnetic field also can cause no signal output.Also having a kind of notification number is CN2176537Y " water meter, gas meter teletransmission measuring apparatus ", utilize magnet steel and Hall element to form signal sensing element, when the gear in the water meter rotates, Hall element has reached the purpose of teletransmission demonstration cummulative metering owing to be subjected to the action of a magnetic field just to produce a pulse signal that is interrupted continuously.This structure could be worked because of Hall element needs impressed voltage, and this just can't use some non-transformer area, influenced range of application, and manufacturing cost is also higher.

The purpose of this utility model is intended to overcome the defective of prior art and provides a kind of can be got rid of the external magnetic field effect and reach the accurately power-source free antimagnetic sensing water meter of signal transmission.

The realization the purpose of this utility model is finished by following scheme: be provided with water strainer in the watchcase with water inlet and water delivering orifice, wheel member in the water strainer is sleeved on the impeller shaft in the blade wheel chamber, the gear set indoor by the magnet steel driven gear rotates, pointer on the gear set drives the rolling counters forward that has display window in the translucent cover, and the signal sensing element that transmits counting is set, transmission signals is connected on the secondary table by being arranged on binding post in the link cover of FIG and the coupled signal wire of drawing, its improvements are that described signal sensing element comprises the raised points on the pointer, and are adjacent by the raised points bump, transmission signals is given the mechanical switch of binding post.

Described mechanical switch can be microswitch or reed switch.

The utility model is because signal sensing element adopts the mechanical switch with anti-magnetic property, avoided the interference of external magnetic field to " switch " signal, guaranteed the accuracy that signal transmits, power required during the mechanical switch duty is very little, can not influence the degree of accuracy of water meter; Because of non-transformer needs, enlarged range of application again, reduced cost of products, overcome the un-reasonable phenomenon of estimating the number of degrees, for the person of checking meter has been brought convenience.

Description of drawings.

Fig. 1 is the utility model scheme 1 structural representation (microswitch is located at the translucent cover inwall).

Fig. 2 shows the vertical view behind the lid for Fig. 1 sheds.

Fig. 3 is the utility model scheme 1 another structural representation (microswitch is located at the counter gear chamber interior walls).

Fig. 4 is the utility model scheme 2 structural representations (reed switch is located on the translucent cover).

Below with reference to above-mentioned accompanying drawing the embodiment of the utility model is remake and to elaborate,

Shown in Fig. 1-4, antimagnetic sensing water meter comprises mutually hinged continuous watchcase (10) and table lid (15), and the table lid is formed the water meter cover with table decorative cover (14).Watchcase (10) has water inlet and the water delivering orifice that joins with pipeline, the water strainer (12) that is contained in the watchcase stops the silt particle infringement water meter inner chamber that enters pipeline, wheel member (11) in the water strainer is sleeved on the impeller shaft in the blade wheel chamber, appropriate by magnetic, the interior overall plastic gear set (9) in the magnet steel driven gear chamber (8) that permanent magnetism is good rotates, pressing fit over pointer (7) on the gear set drives the rolling counters forward of being made up of character wheel and gear wheel in the translucent cover (5) and shows at display window (18), what counting show to adopt routine techniques has an interpretation precision height, meter reading character wheel easily adds the pointer unitized construction, and the signal sensing element that transmits counting is set.Can be protected the translucent cover cleaning surfaces and be prevented fragmentation by the water meter cover that table lid, table decorative cover are formed, be convenient to see clearly the mechanical reading of water meter, table decorative cover phase his-and-hers watches lid can be made circumference and rotate.

The utility model is provided with the signal sensing element that transmits counting, it is included in pointer (7) and is provided with raised points, raised points bump adjacent, transmission signals gives the mechanical switch of binding post (2), binding post is located in translucent cover fastened to each other (5) and the link cover of FIG (1), the signal wire of output revolutions signal (4) links to each other with binding post and receives on the long-range secondary table, correspondingly on table decorative cover and link cover of FIG, be provided with the breach (3) that signal wire is drawn, around binding post, be provided with the boss (13) of avoiding the globule to flow into and causing signal shorts simultaneously.

The dustproof tamper safety feature that link cover of FIG (1), lead sealing (17), lead sealing screw (16) are formed, its effect one are that the protection terminals are clean, improve signal transmission quality, the 2nd, prevent that unrelated person from installing and removing signal wire arbitrarily, in order to avoid influence the reliability that signal transmits.

Described mechanical switch scheme 1 adopts microswitch (6), and the model that microswitch adopts Shanghai microswitch factory to produce is the USD-11 product, and it is fixed on (referring to Fig. 1) on the translucent cover inwall.Also can be fixed on (referring to Fig. 3) on the counter gear chamber interior walls.Look the needs of water meter specification size and intracavity space position.

Described mechanical switch scheme 2 adopt by the normally closed stator (19) that is fixed on moving plate (20) on the translucent cover or in the counter and its both sides, often open reed switch that stator (21) forms (referring to Fig. 4, be fixed on the translucent cover), reed switch can be made by oneself or cooperation processing, when the pointer raised points is stirred moving plate, make it and often open the stator adhesive once and output once " switching signal ", signal driven disc, normally closed stator, often open in the stator and draw, three-way drawing mainly is to disturb in order to eliminate shake by processing of circuit.

Water enters the impact wheel rotation from the water meter water inlet in pipeline, rotate by magnet steel driven gear group, pointer on the gear set just rotatablely moves synchronously, when striking mechanical switch contact or contact, the raised points on the pointer sends once " switch " signal, this signal links to each other with signal wire by binding post and is transferred to the secondary table, pointer whenever turns around, just send " switch " signal, also just write down a certain amount of discharge, the water connection is constantly flow through, " switch " signal just sends one by one, by remote secondary table record signal, has also just write down the water consumption that flows through this table.

Claims (7)

1. antimagnetic sensing water meter, in the watchcase with water inlet and water delivering orifice (10), be provided with water strainer (12), wheel member (11) in the water strainer is sleeved on the impeller shaft in the blade wheel chamber, rotate by the gear set (9) in the magnet steel driven gear chamber (8), pointer on the gear set (7) drives the rolling counters forward that has display window (18) in the translucent cover (5), and the signal sensing element that transmits counting is set, transmission signals is connected on the secondary table by being arranged on interior binding post (2) of link cover of FIG (1) and the coupled signal wire (4) of drawing, it is characterized in that described signal sensing element comprises the raised points on the pointer (7), adjacent by the raised points bump, transmission signals is given the mechanical switch of binding post (2).

2. antimagnetic sensing water meter as claimed in claim 1 is characterized in that described mechanical switch is microswitch (6).

3. antimagnetic sensing water meter as claimed in claim 1 is characterized in that described mechanical switch is by the normally closed stator (19) of moving plate (20) and its both sides, often open the reed switch that stator (21) is formed.

4. antimagnetic sensing water meter as claimed in claim 2 is characterized in that described microswitch (6) is fixed on translucent cover (5) inwall.

5. antimagnetic sensing water meter as claimed in claim 2 is characterized in that described microswitch (6) is fixed on the inwall of counter gear chamber (8).

6. antimagnetic sensing water meter as claimed in claim 3 is characterized in that described reed switch is fixed on the translucent cover (5).

7. antimagnetic sensing water meter as claimed in claim 3 is characterized in that described reed switch is fixed in the counter.

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