CN202693040U - Direct-injection type fight coupling flowmeter - Google Patents
Direct-injection type fight coupling flowmeter Download PDFInfo
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- CN202693040U CN202693040U CN 201220279606 CN201220279606U CN202693040U CN 202693040 U CN202693040 U CN 202693040U CN 201220279606 CN201220279606 CN 201220279606 CN 201220279606 U CN201220279606 U CN 201220279606U CN 202693040 U CN202693040 U CN 202693040U
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Abstract
The utility model discloses a direct-injection type fight coupling flowmeter which comprises a casing body, a couple component, an impeller with multiple blades and a revolving shaft. An impeller cavity is arranged in the casing body. A fluid inlet pipe and a fluid outlet pipe are communicated with the impeller cavity, arranged on two sides of the exterior of the casing body are respectively and correspond to the impeller cavity. The impeller is arranged in the impeller cavity by supporting of the revolving shaft. The couple component is arranged in the casing body and an injection area and a reception area are respectively arranged on two sides of the exterior of the impeller cavity. The level of the fluid inlet pipe is higher than that of the fluid inlet pipe. Thus, for one hand, the period of fluid affecting in the impeller cavity is prolonged so that energy of the fluid is fully used to push the impeller to revolve steadily and rapidly and for the other hand, the level difference is beneficial to discharging bubbles in the impeller cavity and injection rays of the injection area of the couple component avoid being interfered by bubbles in the impeller cavity. Therefore, the direct-injection type fight coupling flowmeter can greatly improve measurement precision and operation stability.
Description
Technical field
The utility model relates to a kind of flowmeter, particularly relates to a kind of direct-injection type optocoupler flowmeter that can greatly improve measuring accuracy.
Background technology
Direct-injection type optocoupler flowmeter mainly is comprised of housing, optocoupler assembly, the impeller with a plurality of blades and rotating shaft; The both sides of housing are respectively equipped with feed tube and drain pipe, are provided with the impeller cavity that is connected with feed tube, drain pipe in the housing and are positioned at two container cavities of impeller cavity both sides; Impeller is installed in the impeller cavity by rotating shaft support; The optocoupler assembly is installed on housing, and its launch site and reception area lay respectively in two container cavities.It utilizes the current impeller to rotate, and when wheel rotation, the light beam of optocoupler assembly is blocked by the blade of impeller, and wheel rotation is after one week, and the light beam of optocoupler assembly is equated with the blade quantity of impeller by the number of times that the blade of impeller blocks; The optocoupler assembly primary circuit that whenever is blocked will produce electric impulse signal one time; Blade quantity one timing when impeller, the rotating speed of impeller is faster, the number of times that the light beam of optocoupler assembly was blocked within the unit interval is more, and the rotating speed of impeller is relevant with the area of the interior xsect of pipe of flow and feed tube, therefore under the prerequisite that the cross-sectional area of feed tube is determined, have the corresponding relation of determining between the electric impulse signal of optocoupler assembly and the flow of liquid, this is the principle of work of direct-injection type optocoupler flowmeter.Yet, because the direct-injection type optocoupler flowmeter of prior art, its feed tube and drain pipe are in same straight line, and be positioned at the bottom of impeller cavity, cause liquid too short the action time in impeller cavity on the one hand, make the rotating speed of impeller not high, the bubble that causes on the other hand being arranged in the impeller cavity inside top is difficult to discharge and is stranded in impeller cavity, and easily the light velocity of optocoupler assembly is caused reflection, thereby cause direct-injection type optocoupler flowmeter to have the weak points such as precision is not high, fluctuation of service.
The utility model content
The purpose of this utility model is to overcome the deficiency of prior art, a kind of direct-injection type optocoupler flowmeter is provided, it mainly improves by the position to drain pipe, therefrom improves the rotating speed of impeller and discharges air in the impeller cavity, makes that its operation is more stable, measuring accuracy is higher.
The technical scheme that its technical matters that solves the utility model adopts is: a kind of direct-injection type optocoupler flowmeter comprises housing, optocoupler assembly, the impeller with a plurality of blades and rotating shaft; Be provided with impeller cavity in the housing, the both sides of the outer corresponding impeller cavity of housing are respectively equipped with feed tube and the drain pipe that is connected with impeller cavity, impeller is installed in the impeller cavity by rotating shaft support, and the optocoupler assembly is installed on housing, and its launch site and reception area lay respectively at the both sides external of impeller cavity; The height of drain pipe is higher than the height of feed tube.
The tail end of meeting liquid level of each blade of described impeller is respectively the first globoidal structure of indent, and the tail end of the back of the body liquid level of each blade of described impeller is respectively the second globoidal structure of evagination.
The inside top chamber wall of described impeller cavity is provided with air discharge duct towards a side of described drain pipe.
The central axis of described drain pipe is along the center of axially departing from described impeller of described rotating shaft.
The height of described drain pipe equates with the centre-height of described impeller, and the height of described feed tube is between the bottom tangent line of the centre-height of described impeller and described impeller cavity.
Between the central axis of described drain pipe and the central point of described impeller be half of drain pipe internal diameter size along the axial deviation distance of described rotating shaft.
The liquid level remainder of meeting of described the first globoidal structure and described blade is the cambered surface transition; The back of the body liquid level remainder of described the second globoidal structure and described blade is the cambered surface transition.
Described housing is made of the first transparent housing and the second transparent housing, surrounds described impeller cavity between the bottom of the first housing and the second housing, and the outside of the corresponding described impeller cavity in the top of the first housing and the second housing is respectively equipped with a container cavity; Described feed tube and drain pipe are located at respectively the second housing, and described optocoupler assembly is installed between the top of the first housing and the second housing, and the launch site of described optocoupler assembly and reception area lay respectively in the container cavity of the first housing and the second housing.
Described impeller is nontransparent material.
After liquid enters in the impeller cavity from feed tube, owing to have difference in height between feed tube and the drain pipe, so that liquid is longer the action time in impeller cavity, have more energy and promote wheel rotation, thereby the rotating speed that makes impeller is more steady, faster, the electric impulse signal that the optocoupler assembly produced within the unit interval is just average, more, thereby its measuring accuracy is higher; In addition, drain pipe is established height, the height that particularly makes drain pipe is with after the height of the central point of impeller equates, not only be conducive to the bubble in the impeller cavity is discharged, and in time discharge after the positive role time of liquid in impeller cavity can being reached, avoid liquid to affect rotating speed and the stationarity of impeller in the top of impeller cavity adverse current.
As a kind of preferred, it is the globoidal structure that the liquid level tail end is arranged to respectively indent of meeting of each blade of impeller, can make the blade of liquid flow impact impeller meet the liquid level tail end after, be not easy to around disperse, thereby liquid stream is larger to the acting force of impeller, makes the rotating speed of impeller faster, more steady; It is arranged to respectively the globoidal structure of evagination with the back of the body liquid level tail end of each blade of impeller, makes liquid stream substantially not form whirlpool at the back of the body liquid level tail end of blade, thereby can effectively reduce the resistance of wheel rotation, makes the rotating speed of impeller faster, more steady.
As a kind of preferred, its in the inside top of impeller cavity after a side of drain pipe arranges air discharge duct, the fluid pressure that can make the impeller cavity inner top act on this air discharge duct and in the impeller cavity originally the state of balance produce disturbance, thereby make air pressure in the bubble obtain discharging and the easier liquid of following is discharged impeller cavity.
Therefore, compared with prior art, the beneficial effects of the utility model are, difference in height design between drain pipe and the feed tube, and the bias state of drain pipe are conducive to utilize the energy impeller of liquid to be rotated, rotating speed and the stability of impeller are improved, also be conducive to simultaneously discharge the bubble in the impeller cavity, thereby can obviously improve the measuring accuracy of direct-injection type optocoupler flowmeter, and make its operation more stable; The cambered surface design of the blade tail end of impeller is conducive to further improve rotating speed and the stability of impeller, thereby can further improves its measuring accuracy; The design of air discharge duct makes the easier discharge of bubble of impeller cavity, thereby can further improve the stability of its operation in the impeller cavity.
Below in conjunction with drawings and Examples the utility model is described in further detail; But a kind of direct-injection type optocoupler flowmeter of the present utility model is not limited to embodiment.
Description of drawings
Fig. 1 is decomposing schematic representation of the present utility model;
Fig. 2 is axonometric drawing of the present utility model;
Fig. 3 is left side view of the present utility model;
Fig. 4 is right side view of the present utility model;
Fig. 5 is the front view of impeller of the present utility model;
Fig. 6 is front view of the present utility model;
Fig. 7 is A-A sectional view of the present utility model;
Fig. 8 is horizontal sectional drawing of the present utility model;
Fig. 9 is vertical cross section figure of the present utility model;
Figure 10 is direction finding sectional view of the present utility model (containing light beam).
Embodiment
Embodiment, referring to Fig. 1-shown in Figure 4, a kind of direct-injection type optocoupler flowmeter of the present utility model comprises housing 1, optocoupler assembly 2, has impeller 3 and the rotating shaft 4 of six blades; Be provided with impeller cavity 13 in the housing 1, the both sides of housing 1 outer corresponding impeller cavity 13 are respectively equipped with feed tube 5 and the drain pipe 6 that is connected with impeller cavity 13, and described impeller 3 is nontransparent material, and impeller 3 is the rotation of vertical state ground by rotating shaft 4 and is installed in the impeller cavity 13; Optocoupler assembly 2 is installed on housing 1, and its launch site 21 and reception area 22 lay respectively at the both sides external of impeller cavity 13, simultaneously, launch site 21 and the line between the reception area 22 of optocoupler assembly are mutually vertical with the vertical plane at impeller 3 places, so, when impeller 3 rotated, one of them blade of each impeller 3 just can stop launch site 21 and the reception area 22 of optocoupler assembly.The height of drain pipe 6 is higher than the height of feed tube 5, specifically, the height of drain pipe 6 is equated with the centre-height of impeller 3, and the height that makes feed tube 5 is between the bottom tangent line of the centre-height of impeller 3 and impeller cavity 13.The central axis of drain pipe 6 is along the center of axially departing from impeller 3 of rotating shaft, specifically both deviation distance is made as half of internal diameter size (that is, the inside diameter size of drain pipe 6) of drain pipe 6.
As a kind of preferred, referring to shown in Figure 5, each blade 31 of above-mentioned impeller meet liquid level 311(meet blade 31 that liquid level refers to impeller at vertically state or nearly vertically state towards the end face of feed tube 5) tail end be respectively the first globoidal structure of indent, the blade 31 that the back of the body liquid level 312(back of the body liquid level of each blade of impeller refers to impeller at vertically state or nearly vertically state towards the end face of drain pipe 6) tail end be respectively the second globoidal structure of evagination; Here, as a kind of preferred, the first globoidal structure of each blade also is the cambered surface transition with the liquid level remainder of meeting of corresponding blade respectively, and the second globoidal structure of each blade also is the cambered surface transition with the back of the body liquid level remainder of corresponding blade respectively.So, after the blade of liquid flow impact impeller is met liquid level 311, because blade is met the concave inward structure of liquid level tail end, make liquid stream basically not can to around disperse, but be the state of relatively assembling, thereby its impulsive force to the blade 31 of impeller is larger, thus make the rotating speed of impeller 3 faster; After the back of the body liquid level tail end of each blade of impeller 3 was arranged to respectively the globoidal structure of evagination, liquid stream did not form whirlpool substantially at the back of the body liquid level tail end of blade, thereby can effectively reduce the resistance that impeller 3 rotates, and made the rotating speed of impeller 3 faster, more steady.
As a kind of preferred, referring to Fig. 7-shown in Figure 9, the inside top chamber wall of above-mentioned impeller cavity 13 is provided with air discharge duct 122 towards a side of drain pipe.Here the design of air discharge duct 122, so that the fluid pressure of impeller cavity inner top can act on this air discharge duct 122, thereby to the originally state of balance generation disturbance in the impeller cavity, make the air pressure of bubble residual in the impeller cavity can access release and the easier liquid discharge impeller cavity 13 of following.
As shown in Figure 1, above-mentioned housing 1 is made of by front and back are affixed the first transparent housing 11 and the second transparent housing 12, the outside that surrounds the corresponding impeller cavity 13 in top of impeller cavity 13, the first housings 1 and the second housing 12 between the bottom of the first housing 11 and the second housing 12 is respectively equipped with a container cavity 111,121; Feed tube 5 and drain pipe 6 are located at respectively the left and right sides of the second housing 12, optocoupler assembly 2 is across between the top of the first housing 11 and the second housing 12, and the launch site 21 of optocoupler assembly and reception area 22 are fixedly installed in respectively in the container cavity 121 of the container cavity 111 of the first housing and the second housing.Above-mentioned air discharge duct 122 is located on the impeller cavity top inner wall face partly of the second housing 12 just.
Referring to Fig. 9, shown in Figure 10, the flow direction of arrow express liquid among Fig. 9, arrow represents the transmit direction of light beam among Figure 10.Liquid (for example water) from feed tube 5 enter impeller cavity 13 interior after, flow out from drain pipe 6 after approximately turning over quadrant.Owing to have difference in height between feed tube 5 and the drain pipe 6, and the center back of drain pipe 6 relative impellers 3 biasing, so that liquid is longer the action time in impeller cavity 13, have more energy and promote impeller 3 rotations, thereby the rotating speed that makes impeller 3 is faster, more steady, the electric impulse signal that optocoupler assembly 2 produced within the unit interval is just more, thereby its measuring accuracy is higher.In addition, drain pipe 6 is established height, the height of drain pipe 6 is equated with the height of the central point of impeller 3, be conducive on the one hand the bubble in the impeller cavity 13 is discharged, the positive role time of liquid in impeller cavity 13 (can be referred to really act on impeller after liquid enters impeller cavity on the other hand, the time that rotates counterclockwise to promote impeller) reach rear timely discharge, avoid liquid to affect the rotating speed of impeller 3 in the top of impeller cavity 13 generation adverse current, if this is because the height of drain pipe 6 arranges too high, then can't in time discharge liquid, make liquid promote impeller 3 backward rotation in impeller cavity 13 interior generation adverse currents, thereby affect speed and stationarity that impeller 3 rotates in the counterclockwise direction.After impeller 3 rotates, the top that its each blade 31 is crossed impeller cavity 13 at every turn all stops the light beam that launch to its reception area 22 launch site 21 of optocoupler assembly, only the blade 31 at impeller departs from the process at impeller cavity top, the reception area 22 of optocoupler assembly just can receive the light beam of launch site 21 emissions, and so moving in circles to produce square wavy electric impulse signal.
Above-described embodiment only is used for further specifying a kind of direct-injection type optocoupler flowmeter of the present utility model; but the utility model is not limited to embodiment; every foundation technical spirit of the present utility model all falls in the protection domain of technical solutions of the utility model any simple modification, equivalent variations and modification that above embodiment does.
Claims (9)
1. a direct-injection type optocoupler flowmeter comprises housing, optocoupler assembly, the impeller with a plurality of blades and rotating shaft; Be provided with impeller cavity in the housing, the both sides of the outer corresponding impeller cavity of housing are respectively equipped with feed tube and the drain pipe that is connected with impeller cavity, impeller is installed in the impeller cavity by rotating shaft support, and the optocoupler assembly is installed on housing, and its launch site and reception area lay respectively at the both sides external of impeller cavity; It is characterized in that: the height of drain pipe is higher than the height of feed tube.
2. direct-injection type optocoupler flowmeter according to claim 1, it is characterized in that: the tail end of meeting liquid level of each blade of described impeller is respectively the first globoidal structure of indent, and the tail end of the back of the body liquid level of each blade of described impeller is respectively the second globoidal structure of evagination.
3. direct-injection type optocoupler flowmeter according to claim 1, it is characterized in that: the inside top chamber wall of described impeller cavity is provided with air discharge duct towards a side of described drain pipe.
4. direct-injection type optocoupler flowmeter according to claim 1, it is characterized in that: the central axis of described drain pipe is along the center of axially departing from described impeller of described rotating shaft.
5. direct-injection type optocoupler flowmeter according to claim 1 is characterized in that: the height of described drain pipe equates with the centre-height of described impeller, and the height of described feed tube is between the bottom tangent line of the centre-height of described impeller and described impeller cavity.
6. direct-injection type optocoupler flowmeter according to claim 4 is characterized in that: between the central axis of described drain pipe and the central point of described impeller be half of drain pipe internal diameter size along the axial deviation distance of described rotating shaft.
7. direct-injection type optocoupler flowmeter according to claim 2, it is characterized in that: the liquid level remainder of meeting of described the first globoidal structure and described blade is the cambered surface transition; The back of the body liquid level remainder of described the second globoidal structure and described blade is the cambered surface transition.
8. direct-injection type optocoupler flowmeter according to claim 1, it is characterized in that: described housing is made of the first transparent housing and the second transparent housing, surround described impeller cavity between the bottom of the first housing and the second housing, the outside of the corresponding described impeller cavity in the top of the first housing and the second housing is respectively equipped with a container cavity; Described feed tube and drain pipe are located at respectively the second housing, and described optocoupler assembly is installed between the top of the first housing and the second housing, and the launch site of described optocoupler assembly and reception area lay respectively in the container cavity of the first housing and the second housing.
9. direct-injection type optocoupler flowmeter according to claim 1, it is characterized in that: described impeller is nontransparent material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220279606 CN202693040U (en) | 2012-06-13 | 2012-06-13 | Direct-injection type fight coupling flowmeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220279606 CN202693040U (en) | 2012-06-13 | 2012-06-13 | Direct-injection type fight coupling flowmeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202693040U true CN202693040U (en) | 2013-01-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220279606 Expired - Lifetime CN202693040U (en) | 2012-06-13 | 2012-06-13 | Direct-injection type fight coupling flowmeter |
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| Country | Link |
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| CN (1) | CN202693040U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616049A (en) * | 2013-09-28 | 2014-03-05 | 厦门佳普乐电子科技有限公司 | Impeller for flow meter and flow meter thereof |
| CN104374435A (en) * | 2014-11-18 | 2015-02-25 | 中环天仪股份有限公司 | Sensor device of monochromatic light flow instrument |
| CN107036663A (en) * | 2017-05-04 | 2017-08-11 | 安徽省锐凌计量器制造有限公司 | A kind of software propeller flowmeter |
| CN107036664A (en) * | 2017-05-04 | 2017-08-11 | 安徽省锐凌计量器制造有限公司 | A kind of flexible pipe flowmeter |
| US10215599B2 (en) | 2017-04-19 | 2019-02-26 | Acer Incorporated | Fluid sampling system and fluid sensing device thereof |
| CN110185629A (en) * | 2019-07-02 | 2019-08-30 | 浙江嘉宏工具制造有限公司 | Flexibility goes out liquid structure and liquid pump |
-
2012
- 2012-06-13 CN CN 201220279606 patent/CN202693040U/en not_active Expired - Lifetime
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103616049A (en) * | 2013-09-28 | 2014-03-05 | 厦门佳普乐电子科技有限公司 | Impeller for flow meter and flow meter thereof |
| CN104374435A (en) * | 2014-11-18 | 2015-02-25 | 中环天仪股份有限公司 | Sensor device of monochromatic light flow instrument |
| CN104374435B (en) * | 2014-11-18 | 2017-07-14 | 中环天仪股份有限公司 | A kind of sensor device of monochromatic light flow instrument |
| US10215599B2 (en) | 2017-04-19 | 2019-02-26 | Acer Incorporated | Fluid sampling system and fluid sensing device thereof |
| CN107036663A (en) * | 2017-05-04 | 2017-08-11 | 安徽省锐凌计量器制造有限公司 | A kind of software propeller flowmeter |
| CN107036664A (en) * | 2017-05-04 | 2017-08-11 | 安徽省锐凌计量器制造有限公司 | A kind of flexible pipe flowmeter |
| CN110185629A (en) * | 2019-07-02 | 2019-08-30 | 浙江嘉宏工具制造有限公司 | Flexibility goes out liquid structure and liquid pump |
| CN110185629B (en) * | 2019-07-02 | 2024-03-29 | 浙江嘉宏工具制造有限公司 | Flexible liquid outlet structure and liquid pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20191203 Address after: Xiafei road in Haicang District of Xiamen city of Fujian Province, No. 2 361000 Patentee after: XIAMEN AXENT KITCHENWARE TECHNOLOGY CO., LTD. Address before: Xiafei road in Haicang District of Xiamen city of Fujian Province, No. 2 361000 Patentee before: Li Feiyu |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130123 |