CN209131699U - A kind of sampling apparatus of instrument - Google Patents

Abstract

The utility model relates to a kind of sampling apparatus of instrument, including table body, the detection shaft rotated with changes in flow rate is equipped in table body；It further include photoemitter, photelectric receiver and the control circuit being electrically connected with photoemitter and photelectric receiver, guide-lighting circuit is constituted by light guide member between the photoemitter and the photelectric receiver, it is provided with on-off system on the guide-lighting circuit, on-off system cooperates with the detection shaft and is connected to or cuts off the guide-lighting circuit.The utility model is carried out the transmitting of light by guide-lighting circuit that light guide member is constituted, received, since light is mainly oriented conduction by the guide-lighting path inside light guide member, it is not easily susceptible to the interference of ambient, the transmission of light is more stable reliable, samples more acurrate.

Description

A kind of sampling apparatus of instrument

Technical field

The utility model relates to a kind of sampling apparatus more particularly to a kind of sampling apparatuses of instrument electromechanical transformation.

Background technique

Machinery instrument includes water meter, gas meter etc., and all having can be used for the flowing of fluid by what driving mechanism drove The detection shaft of metered flow.Such as the Chinese invention " gas meter " of Publication No. CN101122487A, this kind of gas meter Two air bags are installed in watchcase, gas is entered in air bag by air inlet, and gas is flowed out by the gas outlet of connection watchcase, pressure difference It pushes distributor chamber upper cover parallel, drives the crank rod movement for being fixed on upper cover, two sets of crank connecting links are connected by center bearing bracket, bent Driving lever is fixed on handle connecting rod, a headgear of transmission shaft enters magnetosphere, the fixed photoelectric counting disk in other end, and drive shaft cartridge is being fixed on table In driving sleeve on shell, turning wheel is set with outside axle sleeve, turning wheel installs magnetosphere, is mounted on the photoelectric counting of the transmission shaft other end Disk is connect by circuit with LCD panel, they are mounted in the LCD panel shell protruded from watchcase, uses protective glass Protection, installs stem on LCD panel.The crank connecting link of this kind of gas meter is driving mechanism, and transmission shaft is detection Shaft.

Such as notification number is a kind of Chinese utility model " photo-electronic directly reading telemetering type cold-water meter " of CN207280518U, it should Kind of cold-water meter, include the shell of bottom and the cover on top, be provided between shell and cover for seal isolation every Plate and washer；It is provided with impeller box and impeller assembly in shell, mechanical count mechanism and mechanical indication mechanism are provided in cover； Central axis runs through entire water meter, and bottom is connected with impeller assembly, and top drives mechanical count mechanism；In mechanical count mechanism and machine Between tool indication mechanism, it is provided with photoelectric sensor, photoelectric sensor is by incuding mechanical counting mechanism and mechanical indication mechanism Position record digital information, and this information is successively passed through into conducting wire and teletransmission connector uploads by single-chip microcontroller.This kind of water The impeller assembly of table is driving mechanism, and central axis is detection shaft (11).This kind of water meter is a kind of instrument of photoelectric direct-reading Table, this kind of instrument is equipped with complicated mechanical count mechanism in order to count and detect shaft (11), also, is The demand of long-range meter reading, this kind of instrument are additionally provided with the electrooptical device for photo-electronic directly reading, therefore photoelectricity in the prior art The structure of direct-reading meter is complex.

In order to solve this problem, many machinery instruments are provided with the sampling apparatus while the corresponding number of cooperation of induction type According to processing unit, complicated mechanical count mechanism can be saved to realize and count, be also convenient for the remote transmission of data.Such as The Chinese invention " electric water meter " of Publication No. CN103344295A, the water meter include essentic-water-meter, metering sample unit, number According to processing unit, data storage cell and data transmission unit；Measuring sample unit includes several magneto-dependent sensors, essentic-water-meter Including pedestal and an annular magnet, which is mounted on the wheel rotation shaft end portion of the essentic-water-meter, described several Magneto-dependent sensor is all disposed within the one side of the pedestal opposite with the annular magnet, positioned at the normal position of annular magnet, uses In the reversal of magnetism information of the annular magnet of induction is converted to electric signal；The output end of several magneto-dependent sensors with The input terminal of data processing unit connects, and data processing unit is connect with data storage cell, data processing unit also with data Transmission unit connection.It can be seen that this kind of water meter is sampled using magneto-dependent sensor, common magneto-dependent sensor includes dry Reed pipe and Hall element etc., but this kind of magneto-dependent sensor be when by external artificial magnetic field attack interference, due to external strong magnetic Field field strength is higher than internal sensor magnet field strength, will cause internal sensor failure, so that data on flows just will appear deviation, no But the maintenance cost of instrument is promoted, and also will cause trade settlement dispute.

In order to solve this problem, there is the sampling apparatus of some no magnetic, one of which is optical sampling device.Example If notification number is a kind of Chinese utility model patent " anti-interference pulsed gas meter counting on-off system " of CN207963984U, Including LED light tube, two phototransistors, the reflecting piece for being pasted on gas meter, flow meter mechanical counter transmission parts, pulsed drive And detection circuit；The LED light tube is driven by pulsed drive and detection circuit, pulsed light is issued, after reflecting piece reflects It is irradiated on two phototransistor photosurfaces being installed near LED light tube；Light intensity that two transistors are subject to and anti- Mating plate turns to different location correlation with gas meter, flow meter mechanical counter transmission parts, passes through pulsed drive and detection circuit detection two The output signal logic of a phototransistor measures gas meter counter rotation direction and turnning circle.It can be seen that this kind of photoelectricity sampling Device is to receive the power of reflected light by two phototransistors to be sampled, two strong signals of output, power, it is complete it is weak with And weak strong four kinds of logic states and realize counting.The more complicated sampling apparatus of the decision logic of this kind is easy error, reliably Property and accuracy be not high；And LED light tube is directly exposed to set between two transistors, and the light issued is easy It is directly entered in transistor without reflection, influences the accuracy of sampling；And luminous tube and for received transistor it Between light conduction pass through air and carry out, be easy interference by ambient.

Utility model content

Technical problem to be solved in the utility model be for the prior art status provide it is a kind of more reliable and quasi- True instrument sampling apparatus.

Technical solution adopted by the utility model to solve the above technical problems is as follows: the sampling apparatus of this kind of instrument, including Table body, table body is interior to be equipped with the detection shaft rotated with changes in flow rate；Photoemitter, photelectric receiver and and photoemission The control circuit that device and photelectric receiver are electrically connected passes through leaded light between the photoemitter and the photelectric receiver Component constitutes guide-lighting circuit, is provided on the guide-lighting circuit and cooperates with the detection shaft and be connected to or cut off the leaded light The on-off system in circuit.

Preferably, the light guide member includes the first light guide member, the second light guide member and third light guide member, described First light guide member has the first receiving end for receiving the light that the photoemitter issues, and described for emitting First transmitting terminal of light；Second light guide member has the of the light for receiving first transmitting terminal transmitting Two receiving ends, and the second transmitting terminal for the light to be transmitted to the photelectric receiver；The third light guide member It can cooperate with the detection shaft and be connected to or cut off the guide-lighting circuit between first transmitting terminal and second receiving end. The light guide member structure of this kind of set-up mode is simple, convenient for manufacture.

Preferred third light guide member fit system is, one end of the third light guide member and first transmitting terminal or The connection of second receiving end, the other end of the third light guide member have an on-off section, the first end of the on-off section and described the The main parts of three light guide members connects, and the second end of the on-off section is relative to corresponding second receiving end or described the One transmitting terminal upwarps and disconnects the guide-lighting circuit；The on-off system can be rotated synchronously with the detection shaft, when described logical When disconnected device presses the second end of the on-off section, the second end emits with corresponding second receiving end or described first End connection, to be connected to the guide-lighting circuit；When the on-off system presses the first end of the on-off section, the second end It upwarps so that the second end is disconnected with corresponding second receiving end or first transmitting terminal, to cut off the leaded light Circuit.The on-off in guide-lighting circuit is realized by the cooperation of on-off section and on-off system, structure is simple, convenient for manufacture, convenient for switching On off operating mode.

Preferably, the on-off system includes the runner that can be sheathed on rotating synchronously in the detection shaft, Yi Jiwei It is used to press the protruding part of the first end or second end in the lower end surface of the runner.The on-off system of this kind of structure, knot Structure is simple, and using effect is good.

The preferred mode for realizing that one end other end for pressing on-off section upwarps is to be additionally provided with link block in the table body, The middle part of the on-off section along its length is connect with being able to rotate with the link block, so that pressing the first end or second end When the corresponding second end or first end upwarp.By the mating connection with link block so that the both ends of on-off section constitute class Like the structure of seesaw, the on-off in guide-lighting circuit can be steadily realized.

It is preferably that the link block is equipped with shaft with the specific connection type of link block, the both ends of the shaft are equal Equipped with the connection sheet for connecting with the periphery wall of the on-off section, the on-off section is rotated around the shaft.This kind of connection side Formula structure is simple, and using effect is good.

Preferably, first light guide member, the second light guide member, third light guide member are the optical fiber that can be shaped. The optical fiber that can be shaped can not only orient steadily conduction optical fiber and also be able to maintain required shape of working in coordination.

In order to install the first light guide member and the second light guide member, have on the table body guide-lighting for installing described first Component, the first installation cavity of second light guide member, the second installation cavity, the tool of first installation cavity, the second installation cavity Have and be connected to the first opening with the inside of table body, and the second opening being in communication with the outside, first light guide member and second are led Light component passes through first opening and protrudes into the table body.The setting structure letter of the first installation cavity of this kind, the second installation cavity It is single, convenient for manufacture.

The first light guide member and the second light guide member are by the intracorporal pressure extrusion table body of table, first installation in order to prevent The first housing, the second housing are respectively equipped in chamber, the second installation cavity；First housing, the second housing are placed on corresponding institute State the outer position with fixation first light guide member, the second light guide member of the first light guide member, the second light guide member.

First light guide member, corresponding first housing of the second light guide member abjection, the second housing in order to prevent, described first Housing, the second housing have and corresponding first light guide member, the second light guide member close to second open at one end The choke to offset close to one end of second opening.

Compared with the prior art, the advantages of the utility model are: the leaded light that the utility model is made up of light guide member Circuit come carry out light transmitting, receive, since light is mainly oriented biography by the guide-lighting path inside light guide member It leads, is not easily susceptible to the interference of ambient, the transmission of light is more stable reliable, samples more acurrate；And the utility model is logical Connection or cutting that on-off system realizes guide-lighting circuit are crossed, obtains two logic states of switching, control circuit can be accurately Distinguish the two states, it is not easy to make mistakes, it samples more reliable and accurate.

Detailed description of the invention

Fig. 1 is the schematic top plan view of the fit structure of the light guide member of the sampling apparatus of the embodiments of the present invention；

Fig. 2 is the table body of the embodiments of the present invention and the part-structure schematic top plan view of control storehouse decomposing state；

Fig. 3 is the schematic top plan view of the light guide member of the embodiments of the present invention；

The cooperation knot of on-off system and third light guide member when Fig. 4 is the embodiments of the present invention cutting leaded light circuit The schematic side view of structure；

Fig. 5 is that the fit structure side view of third light guide member when the embodiments of the present invention cut off guide-lighting circuit is illustrated Figure；

Fig. 6 is the fit structure of on-off system and third light guide member when the embodiments of the present invention are connected to guide-lighting circuit Schematic side view；

Fig. 7 is that the fit structure side view of third light guide member when the embodiments of the present invention are connected to guide-lighting circuit is illustrated Figure；

Fig. 8 is the structural schematic diagram of the lower end surface of the runner of the embodiments of the present invention.

Specific embodiment

With reference to the accompanying drawings and examples, specific embodiment of the present utility model is described in further detail.

As shown in Fig. 1 to Fig. 8 the sampling apparatus of this kind of instrument, including table body 1, interior be equipped with of table body 1 rotate with changes in flow rate Detection shaft 2；Photoemitter 3, photelectric receiver 4 and the control being electrically connected with photoemitter 3 and photelectric receiver 4 Circuit processed constitutes guide-lighting circuit by light guide member between photoemitter 3 and photelectric receiver 4, sets on guide-lighting circuit It is equipped with the on-off system for cooperating with detection shaft 2 and be connected to or cut off guide-lighting circuit.The photoemitter 3, photoelectricity of the present embodiment Receiver 4 is respectively photoemission cell, photoelectric receiving tube.

The light guide member of the present embodiment includes the first light guide member 5, the second light guide member 6 and third light guide member 7, the One light guide member 5 has the first receiving end 5a of the light for receiving the sending of photoemitter 3, and for emitting light First transmitting terminal 5b；Second light guide member 6 has the second receiving end 6a of the light for receiving the first transmitting terminal 5b transmitting, with And the second transmitting terminal 6b for light to be transmitted to photelectric receiver 4；Third light guide member 7 can with detection shaft 2 cooperation and Guide-lighting circuit between connection or cutting the first transmitting terminal 5b and the second receiving end 6a.The setting side of the light guide member of this kind of structure Formula structure is simple, convenient for manufacture.

In order to realize the on-off in guide-lighting circuit, one end of third light guide member 7 is connect with the first transmitting terminal 5b, and third is guide-lighting The other end of component 7 has on-off section 71, and the first end 71a of on-off section 71 is connect with 72 part of main body of third light guide member 7, The second end 71b of on-off section 71 is upwarped relative to the second receiving end 6a and is disconnected guide-lighting circuit；On-off system can be with detection shaft 2 It rotates synchronously, when on-off system presses the second end 71b of on-off section 71, second end 71b is connected to the second receiving end 6a, thus It is connected to guide-lighting circuit；When on-off system presses the first end 71a of on-off section 71, second end 71b upwarp so that second end 71b with Second receiving end 6a is disconnected, to cut off guide-lighting circuit.Or one end of third light guide member 7 is connect with the second receiving end 6a, The other end of third light guide member 7 has on-off section 71, the first end 71a of on-off section 71 and the main body 72 of third light guide member 7 Part connects, and the second end 71b of on-off section 71 is upwarped relative to the first transmitting terminal 5b and disconnected guide-lighting circuit；On-off system can be with Shaft 2 is detected to rotate synchronously, when on-off system presses the second end 71b of on-off section 71, second end 71b and the first transmitting terminal 5b Connection, to be connected to guide-lighting circuit；When on-off system presses the first end 71a of on-off section 71, second end 71b is upwarped so that Two end 71b and the first transmitting terminal 5b are disconnected, to cut off guide-lighting circuit.

In order to enable connection effect is more preferable, the upper surface that the second receiving end 6a is supported platform 8 is supported, the second of on-off section 71 End 71b is also supported the upper surface support of platform 8 when being pressed, so that the guide-lighting path base of the second receiving end 6a and second end 71b This is coaxial.One end of the third light guide member 7 of the present embodiment is connect with the first transmitting terminal 5b, the second end 71b phase of on-off section 71 Second receiving end 6a is upwarped.The on-off section 71 of the present embodiment is arc strip, and is connected with the main body of third light guide member 7 72 It is connected in one；In addition to this on-off section 71 can also be vertical bar shape and other suitable shapes.The second end 71b of the present embodiment is opposite First end 71a keeps up the state of bending.

The specific structure of on-off system is that on-off system includes the runner that can be sheathed on rotating synchronously in detection shaft 2 9, and positioned at the lower end surface of runner 9 for pressing the protruding part 91 of first end 71a or second end 71b.The present embodiment it is convex Playing component 91 is convex ball.There is the mounting hole 92 for being nested with detection shaft on the runner of the present embodiment

The set-up mode for the on-off section 71 that the present embodiment uses is is additionally provided with link block 10, on-off section 71 is along length in table body 1 Degree is connect with being able to rotate in the middle part of direction with link block 10, so that pressing corresponding second end when first end 71a or second end 71b 71b or first end 71a are upwarped.Specifically, link block 10 be equipped with shaft 11, the both ends of shaft 11 be equipped with for on-off section The connection sheet 12 of 71 periphery wall connection, 11 rotation around the shaft of on-off section 71.

First light guide member 5, the second light guide member 6, third light guide member 7 of the present embodiment are the light that can be shaped It is fine.For the ease of fixed shape, the optical fiber of the present embodiment is the optical fiber that outside is coated with metal skin.

There is the first installation cavity for installing the first light guide member 5, the second light guide member 6 on the table body 1 of the present embodiment 51, the second installation cavity 61, the first installation cavity 51, all having for the second installation cavity 61 are connected to the first open C with the inside of table body 1, And the second opening D being in communication with the outside, the first light guide member 5 and the second light guide member 6 protrude into table body by the first open C In 1.

The first light guide member 5, the second light guide member 6 are forced out table body 1, the installation of the first installation cavity 51, second in order to prevent The first housing 52, the second housing 62 are respectively equipped in chamber 61；It is guide-lighting that first housing 52, the second housing 62 are placed on corresponding first Component 5, the outer position to fix the first light guide member 5, the second light guide member 6 of the second light guide member 6.Outside the first of the present embodiment Cover the 52, second housing 62 and the cooperation of the inner thread of corresponding lighting the first installation cavity 51, the second installation cavity 61 or interference fit；This The first housing 52, the second housing 62 of embodiment are nested with corresponding first light guide member 5, the second light guide member 6 interference fit. The first light guide member 5, the second light guide member 6 deviate from corresponding first housing 52, the second housing 62, the first housing in order to prevent 52, the second housing 62 close to second opening one end D have with corresponding first light guide member 5, the second light guide member 6 close to the The choke a that one end of two opening D offsets.

The control circuit of the present embodiment is set on control panel 13, and control panel 13 is located in control storehouse 14, and control storehouse 14 is removable It is connect with table body 1 with unloading.Control storehouse 14 can use with table body 1 and be threadedly coupled.Photoemitter 3 and photelectric receiver 4 are installed In the position for the D corresponding matching that can be open with the second opening D of the first installation cavity 51, the second of the second installation cavity 61 on control storehouse 14 It sets.

When using this kind of sampling apparatus, photoemitter 3 shines in short-term according to the program instruction set in control circuit, when It detects runner 9 when shaft 2 rotates to rotate synchronously, detection 2 per revolution of shaft will realize the primary connection and cutting of optical path. When the protruding part 91 on runner 9 presses the second end 71b of on-off section 71, second end 71b is connected to the second receiving end 6a, light Road connection is Fig. 6, state shown in 7, and photelectric receiver 4 receives light, and control circuit confirms that optical path is unimpeded；When on runner 9 When protruding part 91 presses the first end 71a of on-off section 71, second end 71b is upwarped, and second end 71b and the second receiving end 6a are disconnected It opens, optical path cutting is Fig. 4, state shown in 5, and photelectric receiver 4 can not receive light, and control circuit confirms that optical path is obstructed；Control The record of these optical path on-off of processing of circuit processed, to realize the sampling of dynamoelectric signal conversion.

Claims (10)

1. a kind of sampling apparatus of instrument, including table body (1), table body (1) is interior to be equipped with the detection shaft rotated with changes in flow rate (2)；Further include photoemitter (3), photelectric receiver (4) and is electrically connected with photoemitter (3) and photelectric receiver (4) The control circuit connect, it is characterised in that: pass through light guide section between the photoemitter (3) and the photelectric receiver (4) Part constitutes guide-lighting circuit, is provided with on-off system on the guide-lighting circuit, the on-off system and the detection shaft (2) cooperate And it can be connected to or cut off the guide-lighting circuit.

2. the sampling apparatus of instrument according to claim 1, it is characterised in that: the light guide member includes the first light guide section Part (5), the second light guide member (6) and third light guide member (7), first light guide member (5) have described for receiving The first receiving end (5a) for the light that photoemitter (3) issues, and the first transmitting terminal (5b) for emitting the light； Second light guide member (6) has the second receiving end of the light for receiving the first transmitting terminal (5b) transmitting (6a), and the second transmitting terminal (6b) for the light to be transmitted to the photelectric receiver (4)；The third light guide section Part (7) can cooperate with the detection shaft (2) and be connected to or cut off first transmitting terminal (5b) and second receiving end Guide-lighting circuit between (6a).

3. the sampling apparatus of instrument according to claim 2, it is characterised in that: one end of the third light guide member (7) It is connect with first transmitting terminal (5b) or the second receiving end (6a), the other end of the third light guide member (7) has on-off Section (71), the first end (71a) of the on-off section (71) are connect with the main body (72) of the third light guide member (7) part, institute The second end (71b) of on-off section (71) is stated relative on corresponding second receiving end (6a) or first transmitting terminal (5b) It sticks up and disconnects the guide-lighting circuit；The on-off system can be rotated synchronously with the detection shaft (2), when the on-off system is pressed Under the on-off section (71) second end (71b) when, the second end (71b) and corresponding second receiving end (6a) or institute The first transmitting terminal (5b) connection is stated, to be connected to the guide-lighting circuit；When the on-off system presses the on-off section (71) When first end (71a), the second end (71b) upwarps so that the second end (71b) and corresponding second receiving end (6a) or first transmitting terminal (5b) disconnect, to cut off the guide-lighting circuit.

4. the sampling apparatus of instrument according to claim 3, it is characterised in that: the on-off system includes that can rotate synchronously Ground is sheathed on the runner (9) on detection shaft (2), and is located at the lower end surface of the runner (9) for pressing described the The protruding part (91) of one end (71a) or second end (71b).

5. the sampling apparatus of instrument according to claim 4, it is characterised in that: be additionally provided with link block in the table body (1) (10), the middle part of the on-off section (71) along its length is connect with being able to rotate with the link block (10), so that pressing described First end (71a) or when second end (71b) corresponding second end (71b) or first end (71a) upwarp.

6. the sampling apparatus of instrument according to claim 5, it is characterised in that: the link block (10) is equipped with shaft (11), the both ends of the shaft (11) are equipped with the connection sheet (12) for connecting with the periphery wall of the on-off section (71), institute On-off section (71) is stated to rotate around the shaft (11).

7. the sampling apparatus of instrument according to claim 6, it is characterised in that: first light guide member (5), second are led Light component (6), third light guide member (7) are the optical fiber that can be shaped.

8. the sampling apparatus of instrument according to claim 7, it is characterised in that: have on the table body (1) for installing First light guide member (5), the first installation cavity (51) of second light guide member (6), the second installation cavity (61), described One installation cavity (51), the second installation cavity (61) all have be connected to the inside of table body (1) first opening (C), and with the external world Second opening (D) of connection, first light guide member (5) and the second light guide member (6) are stretched by first opening (C) Enter in the table body (1).

9. the sampling apparatus of instrument according to claim 8, it is characterised in that: first installation cavity (51), the second peace Behaveing affectedly, (61) are interior to be respectively equipped with the first housing (52), the second housing (62)；First housing (52), the second housing (62) are nested with It is led outside with fixation first light guide member (5), second in corresponding first light guide member (5), the second light guide member (6) The position of light component (6).

10. the sampling apparatus of instrument according to claim 9, it is characterised in that: first housing (52), the second housing (62) have and corresponding first light guide member (5), the second light guide member (6) close to second opening one end (D) The choke (a) to offset close to one end of second opening (D).