CN209783677U - Optical coupling flowmeter - Google Patents

Abstract

The utility model discloses an optocoupler flowmeter, including base and printing opacity lid, the lid sets up on the base, form a cavity between base and the lid, be provided with inlet tube and the outlet pipe that communicates this cavity on the base, be provided with an impeller that can rotate under the water impact in the cavity, be provided with the optocoupler subassembly on the lid, the optocoupler subassembly includes circuit board, sets up infrared emitter and infrared receiver in the circuit board bottom relatively; the cover body comprises a cover plate and a support arranged on the cover plate, a half-moon-shaped installation chamber is arranged on the cover plate in a protruding mode, a groove is formed in the upper end face of the base, and the cavity is formed by the installation chamber and the groove in a splicing mode. The utility model provides an opto-coupler flowmeter, through set up infra-red transmitter and infrared receiver on the lid, compact structure makes the flowmeter not receive the magnetism influence, and then does not have the special requirement to discharging quality of water and mounting point, improves opto-coupler flowmeter's suitability.

Description

Optical coupling flowmeter

Technical Field

The utility model relates to a liquid flow measurement technical field, in particular to opto-coupler flowmeter.

Background

The current flowmeter mainly adopts the principle that a Hall sensor outputs a pulse signal, a singlechip calculates the water yield, and in addition, the control of the pulse number realizes the control of the water yield. However, these flow meters have high requirements on water quality and installation points, because the water quality (or liquid) in different regions contains different minerals, the magnetism of the magnet on the impeller can be weakened after a long time, so that the induction of the hall element is misaligned, the flow accuracy is seriously affected, meanwhile, the selection of the installation point has high requirements, strong magnetism or large metal parts cannot be arranged near the installation point, and otherwise, the flow accuracy is also affected.

It is seen that improvements and enhancements to the prior art are needed.

SUMMERY OF THE UTILITY MODEL

In view of above-mentioned prior art's weak point, the utility model aims at providing an opto-coupler flowmeter aims at making the flowmeter need not have above-mentioned requirement to discharging into quality of water and mounting point, improves flowmeter's suitability.

In order to achieve the purpose, the utility model adopts the following technical proposal:

An optocoupler flowmeter comprises a base and a light-transmitting cover body, wherein the cover body is arranged on the base, a cavity is formed between the base and the cover body, a water inlet pipe and a water outlet pipe which are communicated with the cavity are arranged on the base, an impeller which can rotate under the impact of water flow is arranged in the cavity, an optocoupler assembly is arranged on the cover body, and the optocoupler assembly comprises a circuit board, an infrared emitter and an infrared receiver which are oppositely arranged at the bottom of the circuit board; the lid is including apron and the support of setting on the apron, the protruding installation room that is provided with a semilunar type on the apron, and a recess is seted up to the up end on the base, the cavity is formed by installation room and recess amalgamation, infrared emitter and infrared receiver are located the left and right sides of installation room respectively and the infrared ray that infrared emitter sent can be by pivoted impeller cutting.

The impeller is connected with the cover plate in a rotating mode through a rotating shaft, two rotating shaft mounting grooves which are located on the left side and the right side of the mounting chamber respectively are formed in the bottom of the cover plate, and the rotating shaft is mounted in the rotating shaft mounting grooves.

And a sealing ring mounting groove is formed in the bottom of the cover plate, and a sealing ring is arranged in the sealing ring mounting groove.

The cover plate is provided with a positioning column, the circuit board is provided with a positioning hole matched with the positioning column, and the circuit board is arranged on the support.

The base is further provided with a plurality of supporting legs, a stepped hole used for installing a screw is formed in the bottom of each supporting leg, a connecting column corresponding to the supporting legs is arranged on the cover plate, a threaded hole is formed in the connecting column, and the connecting column and the supporting legs are connected through the threaded holes and the screws.

The bottom of the cover plate is provided with a clamping block, and the base is provided with a clamping groove matched with the clamping block.

The water inlet pipe and the water outlet pipe are coaxially arranged, and the axial direction of the water inlet pipe is perpendicular to the axial direction of the impeller.

Has the advantages that:

the utility model provides an opto-coupler flowmeter compares with prior art, through set up infra-red transmitter and infrared receiver on the lid, compact structure makes opto-coupler flowmeter adopt the photoelectric signal transmission principle to measure the flow, so do not receive the magnetism to influence, and then does not have special requirement to discharging quality of water and mounting point, improves opto-coupler flowmeter's suitability.

Drawings

Fig. 1 is an exploded view of the optocoupler flowmeter provided by the present invention.

Fig. 2 is the utility model provides a perspective view of opto-coupler flowmeter.

Fig. 3 is a perspective view of the optocoupler flowmeter provided by the present invention when no circuit board is installed.

Fig. 4 is an assembly view of the bottom of the cover in the optical coupling flow meter provided by the present invention.

Fig. 5 is a perspective view of another angle of the optocoupler flowmeter provided by the present invention.

Detailed Description

the utility model provides an opto-coupler flowmeter, for making the utility model discloses a purpose, technical scheme and effect are clearer, make clear and definite, and it is right that the following refers to the attached drawing and the embodiment is lifted the utility model discloses further detailed description. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and are not intended to limit the scope of the invention.

Referring to fig. 1-3, the present invention provides an optical coupling flowmeter, including a base 1 and a transparent cover 2 (preferably colorless and transparent), where the cover 2 is disposed on the base 1, a cavity is formed between the base 1 and the cover 2, the base is provided with a water inlet pipe 3 and a water outlet pipe 4 communicating with the cavity, the cavity is provided with an impeller 5 (preferably dark color but not opaque) capable of rotating under water impact, the cover 2 is provided with an optical coupling assembly 6, and the optical coupling assembly 6 includes a circuit board 61, an infrared emitter 62 and an infrared receiver 63 disposed at the bottom of the circuit board relatively; lid 2 is including apron 21 and the support 22 of setting on the apron, the protruding installation room 23 that is provided with a semilunar type on the apron, and a recess 11 is seted up to the up end on the base, the cavity is formed by installation room 23 and the 11 amalgamations of recess, infrared emitter 62 and infrared receiver 63 are located the left and right sides of installation room 23 respectively and the infrared ray that infrared emitter 62 sent can be by pivoted impeller cutting, the support is used for bearing opto-coupler subassembly. The number of the blades of the impeller 5 in the present embodiment is preferably 6, but the number of the blades is not limited to this.

After the optical coupling flowmeter is arranged on a water conveying pipeline of cleaning equipment (such as a washing machine), water flows into a cavity through a water inlet pipe and impacts blades of an impeller 5 to enable the impeller to rotate; the infrared ray emitted by the infrared emitter 62 passes through the mounting chamber 23 and irradiates the infrared receiver 63 to form a loop, when the impeller 5 rotates, the blades of the impeller cut the infrared ray, so that the infrared ray is shielded by the blades of the impeller, thereby continuously and circularly forming a pulse signal (forming a pulse every time the infrared ray is shielded), therefore, a certain number of pulses can be generated in a working period, and the flow rate of water can be calculated according to the ratio of the number of pulses to the water yield. In addition, the control of the water yield can be realized according to the control of the pulse number, and the water supply to the water inlet pipe is stopped when the set pulse number is reached. This optical coupling flowmeter compact structure detects flow accurate, because optical coupling flowmeter adopts be the photoelectric signal transmission principle, so not influenced by magnetism, and then do not have special requirements to the quality of water of discharging into and mounting point, improve optical coupling flowmeter's suitability.

It should be noted that the circuit board 61 is also provided with a corresponding circuit, which is a common knowledge, and here, the circuit is provided on the upper surface of the circuit board, and the pins of the infrared emitter 62 and the infrared receiver 63 penetrate through the circuit board from bottom to top and are electrically connected with the circuit. The circuit board is electrically connected to the lead and terminal block 64.

Specifically, referring to fig. 4, the impeller 5 is rotatably connected to the cover plate 21 through a rotating shaft 51, two rotating shaft installation grooves 24 respectively located at the left and right sides of the installation chamber are formed at the bottom of the cover plate 21, and the rotating shaft 51 is installed in the rotating shaft installation grooves 24. Through setting up like this, the pivot installation of being convenient for improves impeller pivoted stability simultaneously, avoids the impeller to take place to rock under the surging of water.

Preferably, referring to fig. 1 and 4, a sealing ring installation groove 71 is formed at the bottom of the cover plate 21, and a sealing ring 72 is disposed in the sealing ring installation groove. Through setting up the sealing washer, prevent that water from oozing from the joint line between base and the apron and cause electric short circuit.

Preferably, referring to fig. 1 to fig. 3, the cover plate 21 is provided with a positioning post 25, the circuit board is provided with a positioning hole 64 adapted to the positioning post, and the circuit board is disposed on the support 22. In this embodiment, the bracket 22 is configured as a square tube, and a flange 22a for supporting the circuit board is provided in the square tube. Through setting up like this, can restrict the displacement and the rotation of circuit board to realize the location to the circuit board, prevent that circuit board and the electronic component who sets up on it from taking place to rock.

Preferably, referring to fig. 4 and 5, a plurality of support legs 81 are further disposed on the base, a stepped hole 82 for mounting a screw is formed at the bottom of each support leg 81, a connection column 83 corresponding to the support leg is disposed on the cover plate, a threaded hole 84 is formed on the connection column, and the connection column 83 and the support legs 81 are connected through the threaded hole 84 and a screw 85. Through setting up like this, base 1 and lid 2 are connected closely, the dismouting of being convenient for.

Preferably, referring to fig. 5, a latch 91 is disposed at the bottom of the cover plate 2, and a slot 92 adapted to the latch is disposed on the base. Through setting up the fixture block, except being convenient for base and the installation of lid alignment adaptation, still play the recognition effect, avoid the reversal dislocation installation of inlet tube and outlet pipe.

Preferably, referring to fig. 3, the water inlet pipe 3 and the water outlet pipe 4 are coaxially arranged, and the axial direction of the water inlet pipe 3 is perpendicular to the axial direction of the impeller 5. Through setting up like this, opto-coupler flowmeter's structure is compacter, improves impeller pivoted precision and stationarity. Preferably, the water inlet pipe, the water outlet pipe and the base are integrally formed, so that the assembly difficulty is reduced.

As a preferable scheme, please refer to fig. 2 and 3, two fork arms 10 are arranged on the cover plate, and the optical coupling flowmeter is conveniently connected with other devices in the cleaning device in a matching manner by arranging the fork arms.

It is understood that equivalent substitutions or changes can be made by those skilled in the art according to the technical solution of the present invention and the inventive concept thereof, and all such changes or substitutions shall fall within the scope of the present invention.

Claims (7)

1. An optocoupler flowmeter is characterized by comprising a base and a light-transmitting cover body, wherein the cover body is arranged on the base, a cavity is formed between the base and the cover body, a water inlet pipe and a water outlet pipe which are communicated with the cavity are arranged on the base, an impeller which can rotate under the impact of water flow is arranged in the cavity, an optocoupler assembly is arranged on the cover body, and the optocoupler assembly comprises a circuit board, an infrared emitter and an infrared receiver which are oppositely arranged at the bottom of the circuit board; the lid is including apron and the support of setting on the apron, the protruding installation room that is provided with a semilunar type on the apron, and a recess is seted up to the up end on the base, the cavity is formed by installation room and recess amalgamation, infrared emitter and infrared receiver are located the left and right sides of installation room respectively and the infrared ray that infrared emitter sent can be by pivoted impeller cutting.

2. An optically coupled flowmeter according to claim 1, wherein the impeller is rotatably connected to the cover plate via a rotating shaft, the bottom of the cover plate is provided with two rotating shaft mounting grooves respectively located at the left and right sides of the mounting chamber, and the rotating shaft is mounted in the rotating shaft mounting grooves.

3. An optically coupled flowmeter according to claim 1, wherein a sealing ring mounting groove is formed at the bottom of the cover plate, and a sealing ring is arranged in the sealing ring mounting groove.

4. The optocoupler flowmeter of claim 1, wherein the cover plate is provided with a positioning post, the circuit board is provided with a positioning hole adapted to the positioning post, and the circuit board is arranged on the bracket.

5. The optocoupler flowmeter according to claim 1, wherein a plurality of support legs are further arranged on the base, a stepped hole for mounting a screw is formed in the bottom of each support leg, a connecting column corresponding to the support legs is arranged on the cover plate, a threaded hole is formed in the connecting column, and the connecting column and the support legs are connected through the threaded hole and the screw.

6. An optically coupled flowmeter according to claim 1, wherein a clamping block is arranged at the bottom of the cover plate, and a clamping groove matched with the clamping block is arranged on the base.

7. An optocoupler flowmeter according to claim 1, wherein the inlet tube and the outlet tube are arranged coaxially, and the axial direction of the inlet tube is perpendicular to the axial direction of the impeller.