An electromagnetic flowmeter

Abstract

The present invention relates to the technical field of electromagnetic flowmeters, and in particular to an electromagnetic flowmeter, comprising a shell, a measuring structure arranged on the shell, emergency plugging mechanisms arranged on both left and right sides of the shell, a waste liquid collection mechanism for recovering residual oil inside the shell arranged at the lower end of the shell, the emergency plugging mechanism comprising connecting straight pipes fixedly mounted on the left and right sides of the shell, a first mounting block fixedly mounted on the connecting straight pipe on the left side of the shell, an anti-blocking cleaning mechanism arranged on the left side of the first mounting block, and left and right ends of the first mounting block open and arranged coaxially with the connecting straight pipe. The present invention can automatically collect the oil remaining inside the shell during the plugging process by arranging the waste liquid collection mechanism and utilizing the mutual cooperation between the right plugging block and the push switch, thereby preventing the oil from being deposited inside the shell for a long time and causing damage to the measuring component, and can greatly extend the service life of the device.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic flowmeters, and in particular to an electromagnetic flowmeter. Background Art

[0002] The electromagnetic flowmeter is an instrument that uses the principle of electromagnetic induction to measure the flow rate of conductive fluid based on the electromotive force induced when the conductive fluid passes through an external magnetic field. The measurement process is not affected by changes in fluid density, viscosity, temperature and conductivity. Most electromagnetic flowmeters in the prior art are installed between oil storage equipment and oil pipelines, and often only play the role of measuring fluid flow. The on and off of the control pipeline is completed by a control valve set at the end of the oil pipeline. If the control valve is damaged and out of control, the oil pressure and flow rate inside the oil pipeline will change rapidly, which is likely to cause a large impact on the measuring elements inside the electromagnetic flowmeter, thereby causing irreversible damage to the electromagnetic flowmeter. Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides an electromagnetic flowmeter, which solves the technical problem that the electromagnetic flowmeter in the prior art cannot automatically block the oil pipeline in an emergency, thereby causing damage to itself and affecting the measurement accuracy. The electromagnetic flowmeter has the advantage of being able to automatically block the oil pipeline when the oil pipeline is damaged, thereby avoiding damage to the electromagnetic flowmeter itself.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: an electromagnetic flowmeter, comprising a shell, a measuring structure is arranged on the shell, emergency blocking mechanisms are arranged on the left and right sides of the shell, and a waste liquid collecting mechanism for recovering the residual oil in the shell is arranged at the lower end of the shell. When an emergency situation occurs and the oil delivery needs to be stopped immediately, the emergency blocking mechanism will automatically block the left and right sides of the shell, and then the waste liquid collecting mechanism will recover the oil remaining in the shell. The emergency blocking mechanism includes connecting straight pipes fixedly installed on the left and right sides of the shell, a first mounting block is fixedly installed on the connecting straight pipe on the left side of the shell, and an anti-blocking cleaning mechanism is arranged on the left side of the first mounting block. The first mounting block is provided with a vertical blocking groove inside, and a left blocking block is slidably connected to the inside of the blocking vertical groove. A driving screw is movably installed inside the blocking vertical groove. A vertical round rod is fixedly installed at the lower end of the left blocking block. A second mounting block is fixedly installed on the connecting straight tube on the right side of the shell body, and a right blocking block is slidably connected to the inside of the second mounting block. A rotating straight rod is movably installed between the right blocking block and the vertical round rod. When the driving screw rotates around its own axis, the left blocking block will move vertically downward. During the downward movement of the left blocking block, the right blocking block will move upward synchronously, thereby completing the blocking of the left and right sides of the shell body.

[0005] Preferably, circular channels are horizontally opened inside the first mounting block and the second mounting block, and the circular channels are connected to the interior of the connecting straight pipe. The area of ​​the left blocking block is larger than the cross-sectional area of ​​the circular channel. Initially, the left blocking block extends above the first mounting block, and when the left blocking block moves downward, it blocks the left side of the shell.

[0006] Preferably, the driving screw is threadedly connected to the left blocking block, the lower end of the vertical round rod extends to the bottom of the first mounting block, the upper end of the rotating straight rod is rotatably connected to the lower end of the vertical round rod, and the lower end of the rotating straight rod is rotatably connected to the right blocking block. When the left blocking block moves downward under the action of the driving screw, the right blocking block will move upward synchronously under the action of the rotating straight rod.

[0007] Preferably, the waste liquid collection mechanism includes a collecting square cylinder detachably mounted at the lower end of the shell, a one-way valve tube is fixedly mounted between the collecting square cylinder and the shell, a push switch is arranged inside the second mounting block, a movable square plate is slidably connected to the interior of the collecting square cylinder, a reset spring is fixedly connected between the lower end of the movable square plate and the inner wall of the collecting square cylinder, a ventilation elbow is fixedly connected between the lower end of the collecting square cylinder and the connecting straight pipe, and when the one-way valve tube is connected, the oil inside the shell will enter the interior of the collecting square cylinder through the one-way valve tube, and then the movable square plate will move vertically downward under the action of the gravity of the oil.

[0008] Preferably, the push switch is electrically connected to the one-way valve tube via a wire, the movable square plate is tightly fitted to the inner wall of the collecting square tube, and when the movable square plate moves downward, the air inside the collecting square tube enters into the ventilation elbow.

[0009] Preferably, the anti-blocking and cleaning mechanism includes a mounting circular tube fixedly mounted on the left side of the first mounting block, a telescopic sliding column movably mounted inside the mounting circular tube, a buffer spring is provided on the outer sleeve of the telescopic sliding column, a filter screen is fixedly mounted on the left side of the telescopic sliding column, and an anti-blocking component is movably mounted on the inner wall of the mounting circular tube; before the oil enters the connecting straight pipe, the filter screen will remove impurities that may be mixed in the oil, and at the same time, the anti-blocking component will scrape and clean the outer side of the filter screen.

[0010] Preferably, the anti-blocking component includes a driving ring groove opened on the inner wall of the mounting circular tube, in which a cleaning scraper is movably installed. The cleaning scraper can make circular motion along the driving ring groove. During the movement of the cleaning scraper, impurities adhering to the outside of the filter screen plate will be scraped off to prevent them from clogging the filter screen plate.

[0011] Preferably, the measuring structure includes a measuring member fixedly mounted on the upper end of the shell, the lower end of the measuring member extends to the interior of the shell, a display member is fixedly mounted on the upper end of the measuring member, and the display member and the measuring member are electrically connected via a wire.

[0012] By means of the above technical solution, the present invention provides an electromagnetic flowmeter, which has at least the following beneficial effects:

[0013] 1. The present invention provides an emergency blocking mechanism. When the left blocking block moves vertically downward, the right blocking block will move upward synchronously, and the left and right sides of the shell can be automatically blocked synchronously, which can not only greatly improve the sealing performance of the oil plugging, but also reduce the jitter caused by the blocking moment to a certain extent, thereby preventing the electromagnetic flowmeter itself from being damaged and ensuring the measurement accuracy of the electromagnetic flowmeter.

[0014] 2. The present invention can automatically measure and count the flow rate of the oil flowing through the inside of the shell by setting a measuring structure, and display the measurement results to the staff through the display component, which can provide great convenience to the staff.

[0015] 3. The present invention sets a waste liquid collection mechanism and utilizes the cooperation between the right blocking block and the push switch to automatically collect the oil remaining inside the shell during the blocking process, thereby preventing the oil from being deposited inside the shell for a long time and causing damage to the measuring components, and can greatly extend the service life of the device.

[0016] 4. The present invention provides a waste liquid collection mechanism and utilizes the cooperation between the movable square plate and the ventilation elbow to automatically blow off the oil adhering to the connecting straight pipe and the inner wall of the shell, thereby preventing the oil from condensing on the connecting straight pipe and the inner wall of the shell and causing adverse effects on future use.

[0017] 5. The present invention can automatically filter the oil by setting up an anti-blocking cleaning mechanism to prevent impurities mixed in the oil from entering the interior of the connecting straight pipe and the shell, which can largely avoid the connection between the straight pipe and the shell from being blocked, thereby improving the accuracy of the device in detecting the oil flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0019] Figure 1 It is a front view of the overall structure of the present invention;

[0020] Figure 2 It is a schematic diagram of some structures in the present invention;

[0021] Figure 3 It is a rear view of a part of the structure of the present invention;

[0022] Figure 4It is a cross-sectional view of the internal structure of the left mounting block in the present invention;

[0023] Figure 5 It is a cross-sectional view of the internal structure of the right mounting block in the present invention;

[0024] Figure 6 It is a cross-sectional view of the internal structure of the collecting square tube in the present invention;

[0025] Figure 7 It is a cross-sectional view of the internal structure of the circular tube installed in the present invention.

[0026] In the figure: 1. Shell; 2. Measuring structure; 201. Measuring component; 202. Display component; 3. Emergency blocking mechanism; 301. Connecting straight pipe; 302. First mounting block; 303. Blocking vertical groove; 304. Left blocking block; 305. Driving screw; 306. Vertical round rod; 307. Second mounting block; 308. Right blocking block; 309. Rotating straight rod; 4. Waste liquid collecting mechanism; 401. Collecting square cylinder; 402. One-way valve pipe; 403. Press switch; 404. Movable square plate; 405. Reset spring; 406. Ventilation elbow; 5. Anti-blocking cleaning mechanism; 501. Mounting round pipe; 502. Telescopic sliding column; 503. Buffer spring; 504. Filter screen; 505. Anti-blocking component. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1

[0029] according to Figure 1-Figure 5 As shown, an electromagnetic flowmeter includes a shell 1, a measuring structure 2 is arranged on the shell 1, emergency sealing mechanisms 3 are arranged on the left and right sides of the shell 1, and a waste liquid collecting mechanism 4 for recovering the residual oil in the shell 1 is arranged at the lower end of the shell 1. When an emergency situation occurs and the oil delivery needs to be stopped immediately, the emergency sealing mechanism 3 will automatically seal the left and right sides of the shell 1, and then the waste liquid collecting mechanism 4 will recover the oil remaining in the shell 1.

[0030] Specifically, the measuring structure 2 includes a measuring member 201 fixedly mounted on the upper end of the shell 1, the lower end of the measuring member 201 extends into the interior of the shell 1, and a display member 202 is fixedly mounted on the upper end of the measuring member 201. The display member 202 and the measuring member 201 are electrically connected via a wire.

[0031] Specifically, the emergency blocking mechanism 3 includes a connecting straight pipe 301 fixedly installed on the left and right sides of the shell 1, a first mounting block 302 is fixedly installed on the connecting straight pipe 301 on the left side of the shell 1, an anti-blocking cleaning mechanism 5 is provided on the left side of the first mounting block 302, the left and right ends of the first mounting block 302 are open and arranged coaxially with the connecting straight pipe 301, a blocking vertical groove 303 is provided inside the first mounting block 302, a left blocking block 304 is slidably connected inside the blocking vertical groove 303, a driving screw rod 305 is movably installed inside the blocking vertical groove 303, the driving screw rod 305 is threadedly connected to the left blocking block 304, a vertical round rod 306 is fixedly installed at the lower end of the left blocking block 304, and the vertical round rod 306 is fixedly installed at the lower end of the left blocking block 304. The lower end of 06 extends to the bottom of the first mounting block 302, and the second mounting block 307 is fixedly installed on the connecting straight pipe 301 on the right side of the shell 1, and the right blocking block 308 is slidably connected inside the second mounting block 307, and a rotating straight rod 309 is movably installed between the right blocking block 308 and the vertical round rod 306, and the upper end of the rotating straight rod 309 is rotatably connected to the lower end of the vertical round rod 306, and the lower end of the rotating straight rod 309 is rotatably connected to the right blocking block 308. When the driving screw 305 rotates around its own axis, the left blocking block 304 will move vertically downward, and the right blocking block 308 will move upward synchronously during the downward movement of the left blocking block 304, thereby completing the blocking of the left and right sides of the shell 1.

[0032] More specifically, circular channels are horizontally opened inside the first mounting block 302 and the second mounting block 307, and the circular channels are connected to the interior of the connecting straight pipe 301. The area of ​​the left blocking block 304 is larger than the cross-sectional area of ​​the circular channels. Initially, the left blocking block 304 extends above the first mounting block 302. When the left blocking block 304 moves downward, it will block the left side of the shell 1.

[0033] In this embodiment, Figure 1 As shown, initially the left blocking block 304 extends above the first mounting block 302, and the right blocking block 308 extends below the second mounting block 307. At this time, the oil can be smoothly transported to the right through the connecting straight pipe 301. During the process of the oil passing through the shell 1, the measuring component 201 will monitor and count the flow of the oil, and display it to the staff through the display component 202, thereby completing the quantitative transportation of the oil.

[0034] When the flow rate increases sharply due to damage to the oil pipeline, the control switch inside the measuring component 201 will be automatically turned on, causing the driving screw 305 to rotate around its own axis. During the rotation of the driving screw 305, the left blocking block 304 will move vertically downward. After the left blocking block 304 moves downward, it will block the left side of the shell 1.

[0035] In addition, when the left blocking block 304 moves downward, the vertical round rod 306 will move downward synchronously. When the vertical round rod 306 moves downward, the right end of the rotating straight rod 309 will tilt upward, thereby causing the right blocking block 308 to move upward. After the right blocking block 308 moves upward, it will block the right side of the shell 1.

[0036] In this embodiment, an emergency sealing mechanism 3 is provided. When the left sealing block 304 moves vertically downward, the right sealing block 308 will move upward synchronously, and the left and right sides of the shell 1 can be automatically and synchronously sealed, which can not only greatly improve the sealing performance of the oil seal, but also reduce the jitter caused by the sealing moment to a certain extent, thereby preventing the electromagnetic flowmeter itself from being damaged, and can largely avoid the reduction of the metering accuracy of the electromagnetic flowmeter; in addition, in this embodiment, a measuring structure 2 is provided, which can automatically measure and count the flow of oil flowing through the inside of the shell 1, and display the measurement results to the staff through the display component 202, which can provide great convenience to the staff.

[0037] Embodiment 2

[0038] according to Figure 1 , Figure 2 , Figure 5 as well as Figure 6 As shown, on the basis of Example 1, the waste liquid collecting mechanism 4 includes a collecting square cylinder 401 detachably mounted at the lower end of the shell 1, a one-way valve tube 402 is fixedly mounted between the collecting square cylinder 401 and the shell 1, a push switch 403 is arranged inside the second mounting block 307, the push switch 403 and the one-way valve tube 402 are electrically connected through a wire, a movable square plate 404 is slidably connected inside the collecting square cylinder 401, the movable square plate 404 is tightly fitted with the inner wall of the collecting square cylinder 401, a return spring 405 is fixedly connected between the lower end of the movable square plate 404 and the inner wall of the collecting square cylinder 401, a ventilation elbow 406 is fixedly connected between the lower end of the collecting square cylinder 401 and the connecting straight pipe 301, when the one-way valve tube 402 is connected, the oil inside the shell 1 will enter the inside of the collecting square cylinder 401 through the one-way valve tube 402, and then the movable square plate 404 will move vertically downward under the action of the gravity of the oil.

[0039] In this embodiment, Figure 5 As shown, when the right blocking block 308 moves upward, it will contact the push switch 403 and turn it on. After the push switch 403 is turned on, the one-way valve tube 402 will switch to an open state. After the one-way valve tube 402 is opened, the oil remaining inside the shell 1 will enter the interior of the collecting square cylinder 401.

[0040] Moreover, if Figure 6As shown, after the oil enters the collecting square cylinder 401, the movable square plate 404 will move vertically downward. When the movable square plate 404 moves downward, the air inside the collecting square cylinder 401 will enter the inside of the ventilation elbow 406. Subsequently, the air inside the ventilation elbow 406 will enter the inside of the connecting straight pipe 301, thereby blowing off the oil adhering to the connecting straight pipe 301 and the inner wall of the shell 1, and the blown-off oil will also fall into the inside of the collecting square cylinder 401.

[0041] This embodiment provides a waste liquid collection mechanism 4, and utilizes the mutual cooperation between the right blocking block 308 and the push switch 403 to automatically collect the oil remaining inside the shell 1 during the blocking process, so as to avoid the oil being deposited inside the shell 1 for a long time and causing damage to the measuring component 201, thereby greatly extending the service life of the device; in addition, this embodiment provides a waste liquid collection mechanism 4, and utilizes the mutual cooperation between the movable square plate 404 and the ventilation elbow 406 to automatically blow off the oil adhering to the connecting straight pipe 301 and the inner wall of the shell 1, so as to avoid the oil condensing on the connecting straight pipe 301 and the inner wall of the shell 1 and causing adverse effects on future use.

[0042] Embodiment 3

[0043] according to Figure 1 and Figure 7 As shown, on the basis of the above embodiment, the anti-blocking and cleaning mechanism 5 includes a mounting circular tube 501 fixedly mounted on the left side of the first mounting block 302, a telescopic sliding column 502 is movably mounted inside the mounting circular tube 501, a buffer spring 503 is sleeved on the outside of the telescopic sliding column 502, a filter screen plate 504 is fixedly mounted on the left side of the telescopic sliding column 502, and an anti-blocking component 505 is movably mounted on the inner wall of the mounting circular tube 501, before the oil enters the connecting straight pipe 301, the filter screen plate 504 will remove impurities that may be mixed in the oil, and at the same time, the anti-blocking component 505 will scrape and clean the outer side of the filter screen plate 504.

[0044] Specifically, the anti-blocking component 505 includes a driving ring groove opened on the inner wall of the mounting circular tube 501, in which a cleaning scraper is movably installed. The cleaning scraper can make a circular motion along the driving ring groove. During the movement of the cleaning scraper, the impurities adhering to the outside of the filter screen plate 504 will be scraped off to prevent the impurities from clogging the filter screen plate 504.

[0045] In this embodiment, Figure 7 As shown, the filter plate 504 will filter the oil that is about to enter the connecting straight pipe 301 to prevent impurities that may be mixed in the oil from entering the interior of the connecting straight pipe 301, which can effectively prevent the impurities in the oil from clogging the connecting straight pipe 301 and the housing 1.

[0046] The filter plate 504 will always maintain contact with the cleaning scraper under the elastic force of the buffer spring 503, and the cleaning scraper will also always make circular motion along the drive ring groove. Therefore, during the movement of the cleaning scraper, impurities adhering to the outer surface of the filter plate 504 will be scraped off to prevent the surface of the filter plate 504 from being blocked.

[0047] This embodiment is provided with an anti-blocking cleaning mechanism 5, which can automatically filter the oil and prevent impurities mixed in the oil from entering the interior of the connecting straight pipe 301 and the shell 1. It can largely avoid the connection between the straight pipe 301 and the shell 1 from being blocked, thereby improving the accuracy of the device in detecting the oil flow.

[0048] The control method of the present invention is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field. The provision of power is also common knowledge in this field. The present invention is mainly used to protect mechanical devices, so the present invention will no longer explain the control method and circuit connection in detail.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An electromagnetic flowmeter, comprising a housing (1), on which a measuring structure (2) is arranged, characterized in that: The left and right sides of the shell (1) are both provided with emergency plugging mechanisms (3), and the lower end of the shell (1) is provided with a waste liquid collection mechanism (4) for recovering residual oil liquid inside the shell (1); The emergency blocking mechanism (3) comprises a connecting straight pipe (301) fixedly mounted on the left and right sides of the housing (1); a first mounting block (302) is fixedly mounted on the connecting straight pipe (301) on the left side of the housing (1); an anti-blocking cleaning mechanism (5) is arranged on the left side of the first mounting block (302); the left and right ends of the first mounting block (302) are open and arranged coaxially with the connecting straight pipe (301); a blocking vertical groove (303) is provided inside the first mounting block (302); and the inside of the blocking vertical groove (303) is provided with a sealing member. The left blocking block (304) is slidably connected to the housing (1), a driving screw rod (305) is movably installed inside the blocking vertical groove (303), a vertical round rod (306) is fixedly installed at the lower end of the left blocking block (304), a second mounting block (307) is fixedly installed on the connecting straight pipe (301) on the right side of the housing (1), a right blocking block (308) is slidably connected inside the second mounting block (307), and a rotating straight rod (309) is movably installed between the right blocking block (308) and the vertical round rod (306); A circular channel is horizontally opened inside the first mounting block (302) and the second mounting block (307), the circular channel is connected to the inside of the connecting straight pipe (301), and the area of ​​the left blocking block (304) is larger than the cross-sectional area of ​​the circular channel; The driving screw rod (305) is threadedly connected to the left blocking block (304); the lower end of the vertical round rod (306) extends to below the first mounting block (302); the upper end of the rotating straight rod (309) is rotatably connected to the lower end of the vertical round rod (306); and the lower end of the rotating straight rod (309) is rotatably connected to the right blocking block (308).

2. An electromagnetic flowmeter according to claim 1, characterized in that: The waste liquid collection mechanism (4) comprises a collecting square cylinder (401) detachably mounted on the lower end of the housing (1); a one-way valve tube (402) is fixedly mounted between the collecting square cylinder (401) and the housing (1); a push switch (403) is arranged inside the second mounting block (307); a movable square plate (404) is slidably connected inside the collecting square cylinder (401); a return spring (405) is fixedly connected between the lower end of the movable square plate (404) and the inner wall of the collecting square cylinder (401); and a ventilation elbow (406) is fixedly connected between the lower end of the collecting square cylinder (401) and the connecting straight pipe (301).

3. An electromagnetic flowmeter according to claim 2, characterized in that: The push switch (403) is electrically connected to the one-way valve tube (402) via a wire, and the movable square plate (404) is tightly fitted to the inner wall of the collecting square cylinder (401).

4. The electromagnetic flowmeter according to claim 1, characterized in that: The anti-blocking cleaning mechanism (5) comprises a mounting circular tube (501) fixedly mounted on the left side of the first mounting block (302), a telescopic sliding column (502) movably mounted inside the mounting circular tube (501), a buffer spring (503) sleeved outside the telescopic sliding column (502), a filter screen plate (504) fixedly mounted on the left side of the telescopic sliding column (502), and an anti-blocking component (505) movably mounted on the inner wall of the mounting circular tube (501).

5. An electromagnetic flowmeter according to claim 4, characterized in that: The anti-blocking component (505) comprises a driving ring groove formed on the inner wall of the mounting circular tube (501), wherein a cleaning scraper is movably mounted in the driving ring groove, and the cleaning scraper can perform circular motion along the driving ring groove.

6. The electromagnetic flowmeter according to claim 1, characterized in that: The measuring structure (2) comprises a measuring component (201) fixedly mounted on the upper end of the housing (1), the lower end of the measuring component (201) extending into the interior of the housing (1), a display component (202) fixedly mounted on the upper end of the measuring component (201), and the display component (202) and the measuring component (201) being electrically connected via a wire.

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