阅读说明：本技术 一种电磁流量计 (Electromagnetic flowmeter ) 是由 朱增秀 苏杰 李晓垚 于 2019-09-19 设计创作，主要内容包括：本发明属于流量计技术领域,具体的说是一种电磁流量计,包括电磁流量计本体,所述电磁流量计本体包括磁路系统、测量导管、电极、外壳、衬里和转换器,所述电磁流量计本体的进料口处固定有刮料机构,所述刮料机构包括套筒,所述电磁流量计本体的进料口处固定有套筒,所述套筒内转动连接有转轴,所述转轴远离电磁流量计本体的一端固定有扇叶；本发明通过设置有刮板和扇叶等结构,在流体移动的过程中带动扇叶转动,扇叶带动刮板绕着转轴转动,从而使得刮板在转动的同时能对电磁流量计的内侧壁进行刮擦,使得电磁流量计的内侧壁上的污垢被清除掉,从而使得电磁流量计的信号更稳定。(The invention belongs to the technical field of flowmeters, and particularly relates to an electromagnetic flowmeter which comprises an electromagnetic flowmeter body, wherein the electromagnetic flowmeter body comprises a magnetic circuit system, a measuring conduit, an electrode, a shell, a lining and a converter, a material scraping mechanism is fixed at a feed inlet of the electromagnetic flowmeter body and comprises a sleeve, the sleeve is fixed at the feed inlet of the electromagnetic flowmeter body, a rotating shaft is rotationally connected in the sleeve, and a fan blade is fixed at one end of the rotating shaft, which is far away from the electromagnetic flowmeter body; according to the electromagnetic flowmeter, the scraper blade, the fan blade and other structures are arranged, the fan blade is driven to rotate in the fluid moving process, and the fan blade drives the scraper blade to rotate around the rotating shaft, so that the scraper blade can scrape the inner side wall of the electromagnetic flowmeter while rotating, dirt on the inner side wall of the electromagnetic flowmeter is removed, and signals of the electromagnetic flowmeter are more stable.)

1. An electromagnetic flowmeter comprising an electromagnetic flowmeter body (1), the electromagnetic flowmeter body (1) comprising a magnetic circuit, a measurement conduit, an electrode, a housing (11), a liner, and a transducer (12), characterized in that: the utility model discloses an electromagnetic flowmeter, including electromagnetic flowmeter body (1), feed inlet department is fixed with scrapes the material mechanism, scrape the material mechanism and include sleeve (2), the feed inlet department of electromagnetic flowmeter body (1) is fixed with sleeve (2), sleeve (2) internal rotation is connected with pivot (3), the one end that electromagnetic flowmeter body (1) was kept away from in pivot (3) is fixed with flabellum (4), the one end that pivot (3) are located electromagnetic flowmeter body (1) inner chamber is fixed with two scraper blades (5).

2. An electromagnetic flow meter according to claim 1, characterized in that: more than two rectangular frames are fixed on the surface of the rotating shaft (3), and iron wires (6) are arranged in the rectangular frames.

3. An electromagnetic flow meter according to claim 2, characterized in that: more than two baffles (7) are fixed on the surface of the rotating shaft (3).

4. An electromagnetic flow meter according to claim 3, characterized in that: the side wall of the baffle (7) is provided with a semicircular groove (8), and more than two blades (9) are fixed in the semicircular groove (8).

5. An electromagnetic flow meter according to claim 1, characterized in that: the scraper (5) is made of non-ferromagnetic materials, the scraper (5) is in clearance fit with the inner cavity of the electromagnetic flowmeter body (1), and the scraper (5) is in a streamline design.

6. An electromagnetic flow meter according to claim 4, wherein: the back of the scraper (5) is provided with an inclined plane (10) for increasing the rotating speed of the baffle (7).

Technical Field

The invention belongs to the technical field of flowmeters, and particularly relates to an electromagnetic flowmeter.

Background

An electromagnetic flow meter is a flow meter that performs flow measurement according to faraday's law of electromagnetic induction. The electromagnetic flowmeter has the advantages of extremely small pressure loss and large measurable flow range. The ratio of maximum flow to minimum flow is typically 20: 1 or more, the applicable industrial pipe diameter range is wide, the maximum pipe diameter can reach 3m, the output signal and the measured flow rate are linear, the accuracy is higher, and the flow rate of acid, alkali, salt solution, water, sewage, corrosive liquid, slurry, pulp and the like with the conductivity of more than or equal to 5 mu s/cm can be measured. It cannot measure the flow of gas, steam and pure water.

When sewage is discharged, because the sewage is dirty, suspended matters in the sewage are high, and dirt in water is easy to attach to the inner wall of a pipeline, so that an electrode of the electromagnetic flowmeter is covered, if the sewage is a high-conductivity attachment layer, the electromotive force between the electrodes is short-circuited, and if the sewage is an insulating attachment layer, the surface of the electrode is insulated to disconnect a measuring circuit, and the electromagnetic flowmeter cannot work under the two conditions.

Disclosure of Invention

In order to make up for the defects of the prior art, the electromagnetic flowmeter provided by the invention comprises a scraper blade, fan blades and other structures, wherein the fan blades are driven to rotate in the process of fluid movement, and the fan blades drive the scraper blade to rotate around a rotating shaft, so that the scraper blade can scrape the inner side wall of the electromagnetic flowmeter while rotating, dirt on the inner side wall of the electromagnetic flowmeter is removed, and signals of the electromagnetic flowmeter are more stable.

The technical scheme adopted by the invention for solving the technical problems is as follows: the invention relates to an electromagnetic flowmeter, which comprises an electromagnetic flowmeter body, wherein the electromagnetic flowmeter body comprises a magnetic circuit system, a measuring conduit, electrodes, a shell, a lining and a converter, a material scraping mechanism is fixed at a feed inlet of the electromagnetic flowmeter body and comprises a sleeve, the sleeve is fixed at the feed inlet of the electromagnetic flowmeter body, a rotating shaft is connected in the sleeve in a rotating manner, one end of the rotating shaft, which is far away from the electromagnetic flowmeter body, is fixedly provided with fan blades, one end of the rotating shaft, which is positioned in an inner cavity of the electromagnetic flowmeter body, is fixedly provided with two scraper blades, when the electromagnetic flowmeter works, in the process of sewage discharge, because sewage is dirty, suspended matters in the sewage are higher, and dirt in the water is easily attached to the inner wall of the electromagnetic flowmeter body, the electrodes of the electromagnetic flowmeter body are covered, if the electrodes are high-conductivity attachment layers, the electromotive force between the electrodes is short-circuited, if the surface of the electrode is insulated and the measuring circuit is disconnected if the surface of the electrode is insulated, the electromagnetic flowmeter body cannot work under the two conditions, so that when a fluid passes through the scraping mechanism, the fluid can drive the fan blades to rotate, the rotating shaft rotates in the sleeve, and the rotating shaft drives the scraper blades to rotate, so that the scraper blades can scrape the inner side wall of the electromagnetic flowmeter body, further the adhesive layer on the inner side wall of the electromagnetic flowmeter body is scraped, the scraped adhesive layer is taken away along with the fluid, the invention can scrape the inner side wall of the electromagnetic flowmeter body through the matching of the fan blades and the scraper blades without external power source or manual operation, and the scraper blades can scrape the inner side wall of the electromagnetic flowmeter body, so that the inner side wall of the electromagnetic flowmeter body is kept clean, and the electromagnetic flowmeter body cannot work due to the accumulation of the adhesive layer, the work efficiency of the electromagnetic flowmeter body is improved, and the maintenance cost of the electromagnetic flowmeter body is reduced.

Preferably, pivot fixed surface has the rectangle frame more than two, be equipped with the wire netting in the rectangle frame, in operation, the accumulation on adhesion layer can lead to the electromagnetic flow meter body can not work, and the suspended solid in the fluid is less, the suspended solid is difficult to adhere to on the inside wall of electromagnetic flow meter body more, setting through the wire netting, make the wire netting can cut the fluid of passing through, thereby make the suspended solid in the fluid cut into littleer granule by the wire netting, this directly reduces the adhesive force of suspended solid, make the suspended solid be difficult to adhere to on the inside wall of electromagnetic flow meter body, thereby the generation probability on adhesion layer has been reduced, and then the work efficiency of electromagnetic flow meter body has been improved.

Preferably, pivot fixed surface has the baffle more than two, in operation, the flabellum can indirectly drive the baffle and rotate, baffle pivoted in-process can stir the fluid, make the fluid mix more even, even fluid has directly improved the stability of electromagnetic flowmeter body signal, the fluctuation of electromagnetic flowmeter body signal has been reduced, and simultaneously, the rotation of baffle makes the fluid produce slight rotation, rotatory fluid can scrape the attachment on the electromagnetic flowmeter body inside wall, make the attachment drop, thereby can improve the measurement accuracy of electromagnetic flowmeter body, improve the availability factor of electromagnetic flowmeter body.

Preferably, the baffle side wall is provided with a semicircular groove, more than two blades are fixed in the semicircular groove, when the electromagnetic flowmeter is in operation, the area of water flow flowing through the fan blades is an area a, the area of water flow between the fan blades and the baffle is an area b, the area of water flow between the baffle and the electromagnetic flowmeter body is an area c, the water flow can slightly rotate after flowing through the area a, but the water flow returns to be parallel to the axial direction of the sleeve after flowing through the area b, after the fluid reaches the area c, on one hand, the action effect of the flat plate surface on the fluid is poor because the acting force direction of the baffle on the fluid is the radial direction of the fluid, when the baffle side wall is provided with the semicircular groove, the semicircular groove has a gathering effect on the fluid, so that the path of the fluid flowing through the baffle surface is lengthened, the stay time of the fluid on the baffle surface is prolonged, the stirring effect of the baffle on the fluid is enhanced, and the force of, rotatory fluid has weakened the adnexed ability of suspended solid, make the suspended solid reduce at electromagnetic flowmeter body inside wall adnexed ability, the attachment of electromagnetic flowmeter body inside wall has been reduced, on the other hand, when the fluid removed the other end that is fixed with the blade from the one end of half slot, the fluid can be fast-speed passes through the blade, the blade can cut the suspended solid in the fluid this moment, make the suspended solid granule in the fluid diminish, the adnexed ability of the suspended solid of tiny granule reduces, thereby the probability that the attached solid of electromagnetic flowmeter body inside wall generated has been reduced, the measurement accuracy of electromagnetic flowmeter body has been guaranteed.

Preferably, the scraper blade adopts non-ferromagnetic material, the scraper blade is clearance fit with the inner chamber of electromagnetic flowmeter body, the scraper blade adopts streamlined design, in operation, this realization of electromagnetic flowmeter produces magnetic field, if the scraper blade during operation produces the measuring accuracy that the interference just can cause the electromagnetic flowmeter body to descend magnetic field, so the scraper blade adopts non-ferromagnetic material to make, make the scraper blade at the pivoted in-process, can not cut the magnetic field that the electromagnetic flowmeter body produced, can not exert an influence to the measurement of electromagnetic flowmeter body, and simultaneously, the scraper blade adopts streamlined design can reduce the interference of scraper blade at the in-process fluid that removes, make the fluid pass through more steadily, the signal that has reduced the electromagnetic flowmeter body is undulant, the measuring accuracy of electromagnetic flowmeter body has been guaranteed.

Preferably, the scraper blade back is equipped with the inclined plane for increase the slew velocity of baffle, in operation, just can rotate after the pivot is that the fluid passes through the flabellum, and the baffle can bear the very big reaction force of fluid when rotating, great resistance makes the rotational speed of pivot reduce, thereby the cutting effect of wire netting and blade has been reduced, under the condition that the scraper blade back is equipped with the inclined plane, the inclined plane of scraper blade can be strikeed to the fluid, the fluid can produce thrust to the scraper blade, make scraper blade pivoted lighter, the work efficiency of scraping the mechanism has been improved.

the invention has the following beneficial effects:

1. The electromagnetic flowmeter comprises a scraper plate, fan blades and other structures, when fluid passes through the electromagnetic flowmeter, the fluid drives the fan blades to rotate, so that the scraper plate rotates in an inner cavity of the electromagnetic flowmeter, the scraper plate can scrape the inner side wall of the electromagnetic flowmeter, the scraper plate can scrape an adhesion layer on the inner side wall of the electromagnetic flowmeter, and the measurement precision of the electromagnetic flowmeter during working is guaranteed.

2. The electromagnetic flowmeter comprises structures such as the wire netting, and the wire netting can cut suspended matters in fluid in the rotating process of the rotating shaft, so that the particles of the suspended matters in the fluid are reduced, the probability of the suspended matters attached to the inner cavity of the electromagnetic flowmeter is reduced, and the measuring precision of the electromagnetic flowmeter during working is guaranteed.

3. The electromagnetic flowmeter comprises the baffle and other structures, and in the moving process of the baffle, the blades on the baffle can cut fluid, so that suspended matter particles in the fluid are reduced, the probability of attaching the suspended matter to the inner cavity of the electromagnetic flowmeter is reduced, and the measuring precision of the electromagnetic flowmeter during working is ensured.

Drawings

The invention will be further explained with reference to the drawings.

FIG. 1 is a three-dimensional view of the present invention;

FIG. 2 is a left side view of the present invention;

FIG. 3 is a front cross-sectional view of the scraping mechanism;

FIG. 4 is a three-dimensional view of a baffle;

in the figure: the electromagnetic flowmeter comprises an electromagnetic flowmeter body 1, a sleeve 2, a rotating shaft 3, fan blades 4, a scraper 5, a wire netting 6, a baffle 7, a semicircular groove 8, blades 9, an inclined plane 10, a shell 11 and a converter 12.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.

As shown in fig. 1 to 4, the electromagnetic flowmeter of the present invention comprises an electromagnetic flowmeter body 1, the electromagnetic flowmeter body 1 comprises a magnetic circuit system, a measuring conduit, an electrode, a housing 11, a lining and a converter 12, a material scraping mechanism is fixed at a material inlet of the electromagnetic flowmeter body 1, the material scraping mechanism comprises a sleeve 2, the sleeve 2 is fixed at the material inlet of the electromagnetic flowmeter body 1, a rotating shaft 3 is rotatably connected in the sleeve 2, a fan blade 4 is fixed at one end of the rotating shaft 3 away from the electromagnetic flowmeter body 1, two scraper blades 5 are fixed at one end of the rotating shaft 3 located in an inner cavity of the electromagnetic flowmeter body 1, when in operation, in a sewage discharge process, because the sewage is dirty, the suspended matter in the sewage is high, the dirt in the water is easy to adhere to an inner wall of the electromagnetic flowmeter body 1, so that the electrode of the electromagnetic flowmeter body 1 is covered, if the adhesion layer is high in conductivity, the electromotive force between the electrodes is short-circuited, if the adhesion layer is insulating, the surfaces of the electrodes are insulated to disconnect a measuring circuit, and the electromagnetic flowmeter body 1 cannot work under the two conditions, so that by additionally arranging the scraper 5 and the fan blades 4, when a fluid passes through the scraping mechanism, the fluid can drive the fan blades 4 to rotate, so that the rotating shaft 3 rotates in the sleeve 2, the rotating shaft 3 drives the scraper 5 to rotate, the scraper 5 can scrape the inner side wall of the electromagnetic flowmeter body 1, the adhesion layer on the inner side wall of the electromagnetic flowmeter body 1 is scraped, the scraped adhesion layer is taken away along with the fluid, the invention can scrape the inner side wall of the electromagnetic flowmeter body 1 through the matching of the fan blades 4 and the scraper 5 without an external power source or manual operation, and the scraper 5 can scrape the inner side wall of the electromagnetic flowmeter body 1, thereby make the inside wall of electromagnetic flow meter body 1 keep clean, and then guaranteed that electromagnetic flow meter body 1 can not be because of the accumulation of adhesion layer can't work, improved electromagnetic flow meter body 1's work efficiency, reduced electromagnetic flow meter body 1's maintenance cost.

As a specific embodiment of the present invention, two or more rectangular frames are fixed on the surface of the rotating shaft 3, and a wire 6 is arranged in each rectangular frame, when the electromagnetic flowmeter body 1 is in operation, accumulation of an adhesion layer can cause the electromagnetic flowmeter body 1 to be incapable of operating, and suspended matters in fluid are smaller, and the suspended matters are less likely to adhere to the inner side wall of the electromagnetic flowmeter body 1, and through the arrangement of the wire 6, the wire 6 can cut the passing fluid, so that the suspended matters in the fluid are cut into smaller particles by the wire 6, which directly reduces the adhesion capability of the suspended matters, and the suspended matters are less likely to adhere to the inner side wall of the electromagnetic flowmeter body 1, thereby reducing the generation probability of the adhesion layer, and further improving the operating efficiency of the electromagnetic flowmeter body 1.

as a specific embodiment of the present invention, the surface of the rotating shaft 3 is fixed with more than two baffles 7, during operation, the blades 4 can indirectly drive the baffles 7 to rotate, the fluid can be stirred in the process of rotating the baffles 7, so that the fluid is mixed more uniformly, the uniform fluid directly improves the stability of the signal of the electromagnetic flowmeter body 1, and the fluctuation of the signal of the electromagnetic flowmeter body 1 is reduced, meanwhile, the rotation of the baffles 7 causes the fluid to slightly rotate, and the rotating fluid can scrape the attachments on the inner side wall of the electromagnetic flowmeter body 1, so that the attachments fall off, thereby improving the measurement accuracy of the electromagnetic flowmeter body 1 and improving the use efficiency of the electromagnetic flowmeter body 1.

As a specific embodiment of the present invention, the side wall of the baffle 7 is provided with a semicircular groove 8, two or more blades 9 are fixed in the semicircular groove 8, when the electromagnetic flowmeter is in operation, the area of the water flow when flowing through the fan blade 4 is an area a, the area of the water flow between the fan blade 4 and the baffle 7 is an area b, and the area of the water flow between the baffle 7 and the electromagnetic flowmeter body 1 is an area c, so that the water flow will slightly rotate after flowing through the area a, but the water flow returns to the direction parallel to the axial direction of the sleeve 2 after flowing through the area b, when the fluid reaches the area c, on one hand, since the acting force direction of the baffle 7 on the fluid is the radial direction of the fluid, the effect of the flat plate surface on the fluid is poor, when the semicircular groove 8 is provided on the side wall of the baffle 7, the semicircular groove 8 has a gathering effect on the fluid, so that the path of the fluid flowing through the surface of, the stirring effect that baffle 7 played to the fluid has been strengthened, the power of baffle 7 to the fluid makes the fluidic flow direction change this moment, rotatory fluid has weakened the adnexed ability of suspended solid, make the suspended solid reduce at 1 inside wall adhesive force of electromagnetic flowmeter body, the attachment of 1 inside wall of electromagnetic flowmeter body has been reduced, on the other hand, when the fluid removed the other end that is fixed with blade 9 from the one end of half slot 8, the fluid can be fast-speed through blade 9, blade 9 can cut the suspended solid in the fluid this moment, make the suspended solid granule in the fluid diminish, the adhesive force of the suspended solid of tiny granule reduces, thereby the probability that the attachment of 1 inside wall of electromagnetic flowmeter body generated has been reduced, the measurement accuracy of electromagnetic flowmeter body 1 has been guaranteed.

As a specific embodiment of the invention, the scraper 5 is made of non-ferromagnetic material, the scraper 5 is in clearance fit with the inner cavity of the electromagnetic flowmeter body 1, the scraper 5 is in streamline design, and when in use, the electromagnetic flowmeter body 1 can generate a magnetic field, if the scraper 5 generates interference to the magnetic field when working, the measuring precision of the electromagnetic flowmeter body 1 can be reduced, therefore, the scraper 5 is made of non-ferromagnetic material, so that the scraper 5 can not cut the magnetic field generated by the electromagnetic flowmeter body 1 and can not influence the measurement of the electromagnetic flowmeter body 1 in the rotating process, meanwhile, the scraping plate 5 adopts a streamline design, so that the interference of the scraping plate 5 to the fluid in the moving process can be reduced, the fluid is enabled to pass more stably, signal fluctuation of the electromagnetic flowmeter body 1 is reduced, and the measurement accuracy of the electromagnetic flowmeter body 1 is guaranteed.

As a specific embodiment of the present invention, the inclined surface 10 is disposed on the back surface of the scraper 5 to increase the rotation speed of the baffle 7, when the scraper works, the rotating shaft 3 rotates only after the fluid passes through the fan blade 4, and the baffle 7 bears a large reaction force of the fluid when rotating, so that the rotation speed of the rotating shaft 3 is reduced due to a large resistance, thereby reducing the cutting effect of the wire netting 6 and the blade 9, and when the inclined surface 10 is disposed on the back surface of the scraper 5, the fluid impacts the inclined surface 10 of the scraper 5, and the fluid generates a thrust on the scraper 5, so that the scraper 5 rotates more easily, and the working efficiency of the scraping mechanism is improved.

When the electromagnetic flowmeter works, in the process of sewage discharge, because the sewage is dirty, the suspended matters in the sewage are high, the dirt in the water is easy to attach to the inner wall of the electromagnetic flowmeter body 1, so that the electrodes of the electromagnetic flowmeter body 1 are covered, if the electrodes are high-conductivity attachment layers, the electromotive force between the electrodes is short-circuited, if the electrodes are insulating attachment layers, the surfaces of the electrodes are insulated to disconnect a measuring circuit, and the electromagnetic flowmeter body 1 cannot work under the two conditions, so that by additionally arranging the scraper 5 and the fan blades 4, when a fluid passes through the scraping mechanism, the fluid can drive the fan blades 4 to rotate, so that the rotating shaft 3 rotates in the sleeve 2, the rotating shaft 3 drives the scraper 5 to rotate, the scraper 5 can scrape the inner side wall of the electromagnetic flowmeter body 1, further, the attachment layers on the inner side wall of the electromagnetic flowmeter body 1 are scraped, and the scraped attachment layers are taken away along with the fluid, the invention can scrape the inner side wall of the electromagnetic flowmeter body 1 through the matching of the fan blades 4 and the scraping plates 5, does not need an external power source and manual operation, the scraping plates 5 can scrape the inner side wall of the electromagnetic flowmeter body 1, so that the inner side wall of the electromagnetic flowmeter body 1 is kept clean, the electromagnetic flowmeter body 1 is further ensured not to be incapable of working due to the accumulation of the adhesion layers, the working efficiency of the electromagnetic flowmeter body 1 is improved, the maintenance cost of the electromagnetic flowmeter body 1 is reduced, meanwhile, the accumulation of the adhesion layers can lead the electromagnetic flowmeter body 1 to be incapable of working, the suspended matters in the fluid are smaller, the suspended matters are more difficult to adhere to the inner side wall of the electromagnetic flowmeter body 1, the wire netting 6 can cut the passing fluid through the arrangement of the wire netting 6, and the suspended matters in the fluid are cut into smaller particles by the wire netting 6, this directly reduces the adhesive force of suspended solid for the suspended solid is difficult to be attached to on the inside wall of electromagnetic flowmeter body 1, thereby has reduced the generation probability of adhesion layer, and then has improved electromagnetic flowmeter body 1's work efficiency.

The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.