Protective electromagnetic flowmeter convenient to disassemble and assemble

Abstract

The invention provides a protective electromagnetic flowmeter convenient to disassemble and assemble, and relates to the technical field of electromagnetic flowmeters, the protective electromagnetic flowmeter comprises a body and a flange connecting unit, a lining is arranged in the body, the two ends of the lining are connected with switching units, and the switching units abut against the two ends of the body; the lining is pressed and sleeved in the body, two ends of the lining are fixedly connected with the body through the switching units, and the flange connecting unit is fixedly connected with the switching units at two ends of the body; at least two clamping grooves are rotationally and symmetrically formed in the end faces of the two sides of the lining, inserting block units corresponding to the clamping grooves are fixed to the end face of one side of the switching unit, the switching unit and the lining are rotationally clamped and fixed through the inserting block units and the clamping grooves, and the other side of the switching unit is fixed to the flange connecting unit in an inserted mode; therefore, the problem of time cost caused by the disassembly efficiency and detection and maintenance of the electromagnetic flowmeter is solved, and the detachable lining is independently arranged in the electromagnetic flowmeter, so that the replacement process of the lining is simplified, and the maintenance cost is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of electromagnetic flowmeters, and more particularly to a protective electromagnetic flowmeter which is easy to disassemble and assemble. Background Art

[0002] Electromagnetic flowmeters are often used in industrial environments and play an important role in measuring fluids. However, traditional electromagnetic flowmeters often have many inconveniences when replacing the inner lining, resulting in low maintenance and repair efficiency. Especially in places with limited operating space, the traditional method requires a lot of time to disassemble and assemble, which greatly affects production efficiency.

[0003] The electromagnetic flowmeter in the prior art has significant limitations in terms of connection and disassembly. Usually, the disassembly of the electromagnetic flowmeter requires complex operating steps, including disassembly of flange connection components and complex mechanical connectors. This process is not only time-consuming, but also easy to damage key components and increase maintenance costs. In addition, the measuring inner cavity of the electromagnetic flowmeter, i.e., the liner, has two functions: one is to allow the fluid to pass through, and the other is to protect the electromagnetic sensor from direct erosion by highly corrosive or abrasive fluids. Therefore, the liner is prone to rust or accumulation of dirt after long-term use, which will have an adverse effect on the measurement accuracy and service life of the flowmeter, resulting in a shortened service life of the sensor. When the liner of the electromagnetic flowmeter is damaged or corroded, the liner needs to be repaired or the flowmeter body needs to be replaced directly.

[0004] Based on this, the present invention provides a protective electromagnetic flowmeter that is easy to disassemble and assemble. By separately replacing the liner and the body and the quick connection structure of the flange connection unit, it not only simplifies the replacement process of the liner, shortens the time cost of inspection or maintenance, and improves maintenance efficiency, but also ensures the long-term stable operation of the electromagnetic flowmeter through effective protection of the liner, effectively solving the deficiencies in the prior art. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a protective electromagnetic flowmeter that is easy to disassemble and assemble, which solves the problems of the electromagnetic flowmeter's disassembly efficiency and the time cost caused by detection and maintenance.

[0006] To achieve the above object, the present invention provides the following technical solutions: The present invention provides a protective electromagnetic flowmeter which is easy to disassemble and assemble, comprising a body and a flange connection unit, wherein an inner liner is arranged in the body, and adapter units are connected to both ends of the inner liner, and the adapter unit abuts against both ends of the body, and the inner liner is pressed into the body and both ends of the inner liner are fixedly connected to the body through the adapter unit, and the flange connection unit is fixedly connected to the adapter units at both ends of the body; at least two clamping grooves are rotationally symmetrically arranged on the end surfaces of both sides of the inner liner, and an insert block unit corresponding to the clamping groove is fixed on one end surface of the adapter unit, and the adapter unit and the inner liner are rotationally clamped and fixed with the insert block unit and the clamping groove, and the other side of the adapter unit is plug-fixed with the flange connection unit, and a first sealing ring is arranged between the flange connection unit and the adapter unit, and a second sealing ring is arranged between the adapter unit and the inner liner.

[0007] According to one embodiment of the present invention, any of the snap-in slots includes a second slot and a limiting slot, the second slot is arranged at one end of the limiting slot, the plug-in block unit includes a first connecting block adapted to the limiting slot and a second connecting block adapted to the second slot, the second connecting block is inserted into the snap-in slot from the second slot and the first connecting block enters the limiting slot by rotation, the limiting slot abuts against the second connecting block to limit the plug-in block unit through the snap-in slot.

[0008] According to one embodiment of the present invention, the flange connection unit includes a flange plate and a first connecting head, one end of the first connecting head is provided with an annular installation cavity, a column unit is installed in the installation cavity, the column unit includes a first column and a second spring, one end of the first column is slidably set in the installation cavity by a first slider, the inner side of the first connecting head is provided with a second adjustment groove for the first column to extend, the second spring is installed in the installation cavity and one end of the second spring is against the first column, the adapter unit includes a support ring and a second connecting head, the second connecting head and the plug unit are respectively fixed on both sides of the support ring, a first slot for the other end of the first column to be inserted is provided on the circumferential end surface of the second connecting head, the first slot is an annular cavity, and the second connecting head is provided with an unlocking slot connected to the side of the first slot, and the first column can exit the first slot through the unlocking slot.

[0009] According to an embodiment of the present invention, an L-shaped adjustment cavity is provided in a part of the first plug post extending out of the second adjustment groove. A second plug post is provided in the horizontal cavity of the adjustment cavity. One end of the second plug post is connected with a third slider and is slidably arranged in the horizontal cavity of the adjustment cavity through the third slider. A first wedge block is also slidably arranged in the horizontal cavity of the adjustment cavity, and a second wedge block is slidably arranged in the vertical cavity of the adjustment cavity. The first wedge block and the second wedge block are in contact with each other. The first wedge block is used to push the second wedge block to move left and right. A third spring is arranged between the third slider and the first wedge block. A threaded groove for installing an adjustment screw is provided on the first slider, and an adjustment screw is connected in the threaded groove. One end of the adjustment screw extends into the vertical cavity of the adjustment cavity and is rotatably connected with one end of the second wedge block. The other end of the adjustment screw is connected with an adjustment bolt. A first adjustment groove is provided on the first connector head, and the first adjustment groove is arranged directly above the adjustment bolt. A positioning groove for the second plug post to be inserted is arranged inside the first insertion slot. A sealing sleeve is sleeved on the circumferential outer end surface of the first connector head at the position of the first adjustment groove.

[0010] According to an embodiment of the present invention, an annular groove is provided on the circumferential outer end surface of the first connector head at the position of the first adjustment groove. The first adjustment grooves are all located in the annular groove, and the sealing sleeve is clamped in the annular groove. The ends of the first plug post and the second plug post that cooperate with the first insertion slot and the positioning slot respectively adopt a tapered cross-sectional shape.

[0011] According to an embodiment of the present invention, the flange connection unit includes a flange plate and a first connector head. An annular installation cavity is provided at one end of the first connector head. A plug post unit is installed in the installation cavity. The plug post unit includes a first plug post and a telescopic seat. One end of the first plug post is arranged in the telescopic seat. A guide block is connected to the end of the telescopic seat away from the first plug post. The telescopic seat is slidably arranged in the installation cavity. One end of the first plug post is connected with a second slider. A fourth spring is arranged in the telescopic seat and one end of the fourth spring abuts against the second slider. The side of the first plug post away from the second slider facing the body is a cam surface, and the other side is a stop surface. A fifth spring is arranged in the installation cavity on the side of the telescopic seat facing the body. One end of the fifth spring is fixedly connected to the side surface of the telescopic seat, and the other end of the fifth spring is fixedly connected to the inner wall of the installation cavity opposite to the telescopic seat. A first adjustment groove is provided on the circumferential outer end surface of the first connector head, and the guide block is slidably adapted to the first adjustment groove. A second adjustment groove is provided on the circumferential inner end surface of the first connector head, and the second adjustment groove is used for the first plug post to extend out. The telescopic seat slides along the first adjustment groove through the guide block, so that the first plug post retracts into the telescopic seat under the action of the cam surface.

[0012] According to one embodiment of the present invention, the adapter unit includes a support ring and a second connector, and a first slot adapted to the first plug post is formed on an upper circumferential end surface of the second connector.

[0013] According to one embodiment of the present invention, a sliding sleeve is provided on the circumferential outer end surface of the first connector at the first adjustment groove, the width of the sliding sleeve is greater than twice the width of the first adjustment groove and the guide block is connected to the middle position of the sliding sleeve in the width direction.

[0014] According to one embodiment of the present invention, a telescopic cavity is provided in the second connecting block, a telescopic head is slidably provided in the telescopic cavity, a first spring is provided in the telescopic head, the first spring pushes the telescopic head out of the opening at one end of the second connecting block, and a third slot corresponding to the telescopic head is also provided in the clamping groove, and the third slot is arranged at one end of the limiting groove away from the second slot.

[0015] According to one embodiment of the present invention, the telescopic head is a conical cross-section, and the third slot is a conical hole corresponding to the telescopic head.

[0016] In summary, the present application includes at least one of the following beneficial technical effects: In the present solution, a removable liner is separately provided inside the electromagnetic flowmeter, and the two ends of the liner are fixed by rotating clamps, so that the adapter unit and the liner can be conveniently disassembled and assembled, making the liner easy to replace and maintain, thereby simplifying the liner replacement process and reducing maintenance costs; at the same time, the first sealing ring and the second sealing ring between the components respectively ensure the sealing between the flange connection unit and the adapter unit, and between the adapter unit and the liner to prevent leakage.

[0017] In the present solution, the first pin extends outward under the action of the first spring, and when connection is required, the first pin is inserted into the first slot of the second connector to achieve preliminary positioning; the second connector is connected to the pin unit through a support ring, and under the action of an unlocking slot, the first pin can be controlled to release the lock on the first slot, thereby achieving adjustment and disassembly during the connection process. Furthermore, a convenient unlocking method is provided by setting the unlocking slot, so that the connection unit can be flexibly adjusted and disassembled when needed, thereby improving the convenience and flexibility of the connection system.

[0018] In this solution, during installation, the first pin is retracted into the telescopic seat under the action of external force, and the position is kept fixed by the elastic force of the fifth spring; when disassembly is required, the cam surface on the first pin is pressed against the side of the telescopic seat by external force, so that it is retracted and released, and the second adjustment groove allows the first pin to extend from the installation cavity, making it easy to disassemble the connector, thereby realizing efficient and convenient installation and disassembly of the electromagnetic flowmeter, and improving the efficiency and convenience of maintenance and installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Overall structure diagram of the first embodiment of the present invention; Figure 2 Exploded view of the inner lining and the adapter unit in the first embodiment of the present invention; Figure 3 Structure diagram of the adapter unit in the first embodiment of the present invention; Figure 4 Structure diagram of the flange connection unit in the first embodiment of the present invention; Figure 5 Partial cross-sectional view of the adapter unit and the flange connection unit in the separated state in the first embodiment of the present invention; Figure 6 Partial cross-sectional view of the adapter unit and the flange connection unit in the engaged state in the first embodiment of the present invention; Figure 7 For Figure 5 Enlarged structural schematic diagram of the position A in Figure 8 Based on Figure 7 Structural schematic diagram of the first plug post in the first embodiment of the present invention; Figure 9 Structure diagram of the electromagnetic flowmeter without the flange connection unit in the second embodiment of the present invention; Figure 10 Based on Figure 9 Exploded view; Figure 11 Exploded view of the flange connection unit in the second embodiment of the present invention; Figure 12 Cross-sectional view of the flange connection unit in the second embodiment of the present invention; Figure 13 For Figure 11 Enlarged structural schematic diagram of the position B in Figure 14 For Figure 12 Enlarged structural schematic diagram of the position C in Figure 15 Cross-sectional view of the adapter unit in the third embodiment of the present invention; Figure 16 For Figure 15 Enlarged structural schematic diagram of the position D in Figure 17 Based on Figure 16 Improved structural schematic diagram of the telescopic head in Figure 18 Side view of the inner lining in the third embodiment of the present invention.

[0020] Reference numerals: 1, body; 2, flange connection unit; 201, flange; 202, first connector; 2020, installation cavity; 2021, first adjustment groove; 2022, second adjustment groove; 3, adapter unit; 301, support ring; 302, second connector; 303, plug unit; 3031, first connecting block; 3032, second connecting block; 30321, telescopic cavity; 3033, telescopic head; 3034, first spring; 304, first slot; 3041, positioning groove; 305, unlocking groove; 4, inner lining; 401, second slot; 402, limiting groove; 403, third slot; 5, plug post unit; 501, first plug post; 5010, first slider; 5011, adjustment cavity; 5012, second slider; 502, second spring; 503, second plug post; 5031, third slider; 504, first wedge block; 505, second wedge block; 506, adjustment screw; 507, third spring; 508, adjustment bolt; 509, telescopic seat; 510, guide block; 511, fourth spring; 6, sliding sleeve; 7, first sealing ring; 8, second sealing ring; 9, fifth spring; 10, sealing sleeve. Detailed implementation manners

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] As Figures 1 to 8 shown, a detachable and protective electromagnetic flowmeter according to the first embodiment of the present invention has a body 1 and a flange connection unit 2. Since the measurement inner cavity of the electromagnetic flowmeter is prone to rust or accumulate dirt after long-term use, which will have an adverse impact on the measurement accuracy and service life of the flowmeter. To ensure the normal operation of the flowmeter, an inner lining 4 is provided in the body 1, and the inner lining 4 can be disassembled and replaced. Specifically, as Figure 1As shown, transfer units 3 are connected to both ends of the inner liner 4. The transfer units 3 are fixedly connected to the main body 1. That is, after the inner liner 4 is pressed and sleeved inside the main body 1, both ends of the inner liner 4 are fixedly connected to the main body 1 through the transfer units 3. Secondly, the flange connection unit 2 is fixedly connected to the transfer units 3 at both ends of the main body 1. During use, it is necessary to connect the flange 201 on the flange connection unit 2 to the pipelines on both sides in advance. Furthermore, both ends of the electromagnetic flowmeter are quickly connected to the flange connection unit 2 through the transfer units 3. When it is necessary to replace the inner liner 4 of the measurement cavity of a certain electromagnetic flowmeter, the connection structure between the transfer unit 3 and the quick connection of the flange connection unit 2 is disassembled to remove the entire flowmeter, and then the inner liner 4 can be removed by disassembling the transfer units 3 at both ends, realizing the quick replacement of the inner liner 4.

[0023] Furthermore, at least two clamping grooves are arranged in a rotationally symmetric manner on the end faces on both sides of the inner liner 4. As Figure 2 shown, two clamping grooves are arranged in this embodiment. Then, on one side end face of the transfer unit 3, a plug unit 303 corresponding to the clamping groove is fixedly installed. The transfer unit 3 and the inner liner 4 are rotationally clamped and fixed through the plug unit 303 and the clamping groove. In order to ensure the sealing performance of the connections on both sides of the transfer unit 3, a first sealing ring 7 is provided between the flange connection unit 2 and the transfer unit 3, and a second sealing ring 8 is provided between the transfer unit 3 and the inner liner 4. The clamping groove includes a second slot 401 and a limiting groove 402. The second slot 401 is arranged at one end of the limiting groove 402. The plug unit 303 includes a first connection block 3031 adapted to the limiting groove 402 and a second connection block 3032 adapted to the second slot 401. The width of the first connection block 3031 is smaller than that of the second connection block 3032. In this way, when the second connection block 3032 is inserted into the clamping groove from the second slot 401, if it is rotated so that the first connection block 3031 enters the limiting groove 402, the limiting groove 402 will abut against the second connection block 3032, and the entire second connection block 3032 is limited by one end face of the second connection block 3032 abutting against the limiting groove 402. As Figure 3 shown, the transfer unit 3 includes a support ring 301 and a second connection head 302. The second connection head 302 and the plug unit 303 are respectively fixed on both sides of the support ring 301. Among them, the first sealing ring 7 is arranged on one side end face of the support ring 301 where the plug unit 303 is located, and a notch corresponding to the plug unit 303 is provided on the first sealing ring 7. The first sealing ring 7 is sleeved on the plug unit 303 through the notch, realizing the fixation of the first sealing ring 7 on the support ring 301.

[0024] Immediately afterwards, the other side of the transfer unit 3, that is, the second connection head 302, is plug-connected and fixed to the flange connection unit 2. As Figures 4 to 6As shown, the flange connection unit 2 includes a flange plate 201 and a first connector 202. An annular installation cavity 2020 is formed at one end of the first connector 202. An insertion post unit 5 is installed in the installation cavity 2020. Combining with Figure 7 , the insertion post unit 5 includes a first insertion post 501 and a second spring 502. One end of the first insertion post 501 is slidably arranged in the installation cavity 2020 through a first slider 5010. A second adjustment groove 2022 for the first insertion post 501 to extend out is provided inside the first connector 202. The second spring 502 is installed in the installation cavity 2020 and one end of the second spring 502 abuts against the first insertion post 501. A first insertion slot 304 for the other end of the first insertion post 501 to insert is formed on the circumferential end surface of the second connector 302. The first insertion slot 304 is an annular cavity. An unlocking groove 305 communicating with the side of the first insertion slot 304 is formed on the second connector 302. The first insertion post 501 can exit the first insertion slot 304 through the unlocking groove 305. Again, as Figure 4 shown, a step is provided inside the first connector 202. Among them, the second sealing ring 8 is arranged on this step. After the first connector 202 and the second connector 302 are joined, one end of the second connector 302 abuts tightly against the second sealing ring 8. As Figure 5 and 6 and combining with Figure 2 it can be known that a plurality of first insertion posts 501 are arranged on the annular inner wall at one end of the first connector 202. By rotating the first connector 202 as a whole, the first insertion posts 501 can be aligned with the unlocking grooves 305 on the second connector 302. Subsequently, an insertion action is performed on the first connector 202. When the first insertion posts 501 abut against the unlocking grooves 305, they will be slightly lifted upward. Subsequently, they fall into the first insertion slots 304. At this time, if the first connector 202 is rotated as a whole, the first insertion posts 501 will move along the first insertion slots 304 so that the first insertion posts 501 are completely restricted in the first insertion slots 304. If it is necessary to separate the first connector 202 and the second connector 302, the first connector 202 needs to be rotated again to align the first insertion posts 501 with the unlocking grooves 305 on the second connector 302 again. An outward pulling force is applied to the first connector 202. If the bottom of the first insertion post 501 adopts a cam surface or a conical surface, the first insertion post 501 can easily be lifted slightly upward against the second spring 502, realizing the separation of the first connector 202 and the second connector 302.

[0025] To improve the connection stability between the first connector 202 and the second connector 302, an L-shaped adjustment cavity 5011 is formed in the part of the first insertion post 501 extending out of the second adjustment groove 2022. As Figure 7 and 8As shown in the figure, a second insertion post 503 is provided in the adjustment cavity 5011 for adjusting the horizontal state of the adjustment cavity 5011. One end of the second insertion post 503 is connected to a third slider 5031 and is slidably arranged in the adjustment cavity 5011 in the horizontal state through the third slider 5031. A first wedge block 504 is also slidably arranged in the adjustment cavity 5011 in the horizontal state, while a second wedge block 505 is slidably arranged in the adjustment cavity 5011 in the vertical state. The first wedge block 504 and the second wedge block 505 are in contact with each other. The up and down movement of the first wedge block 504 can push the second wedge block 505 to move left and right. A third spring 507 is provided between the third slider 5031 and the first wedge block 504. A threaded groove for installing the adjustment screw 506 is provided on the first slider 5010, and the adjustment screw 506 is connected in the threaded groove. One end of the adjustment screw 506 extends into the vertical cavity of the adjustment cavity 5011 and is rotatably connected to one end of the second wedge block 505. Therefore, by rotating the adjustment screw 506, the adjustment screw 506 can move up and down, that is, the second wedge block 505 can be pushed up and down by one end of the adjustment screw 506; a positioning groove 3041 for inserting the second insertion post 503 is provided inside the first slot 304. A sealing sleeve 10 is sleeved on the circumferential outer end surface of the first connector 202 at the first adjustment groove 2021. When in use, after the first insertion post 501 falls into the first slot 304, the first connector 202 is further rotated so that the second insertion post 503 also falls into the positioning groove 3041, thereby completing the positioning of the first insertion post 501, so that the first connector 202 and the second connector 302 do not rotate relative to each other after docking, improving the stability and use effect; furthermore, by using a tool to rotate the adjustment screw 506, the compression amount of the third spring 507 can be changed, that is, after the second insertion post 503 is worn, the stiffness performance of the third spring 507 can be adjusted to ensure the positioning effect of the first insertion post 501. In addition, the second insertion post 503 also adopts a cam surface or a conical surface similar to that of the first insertion post 501, so as to ensure that the second insertion post 503 can easily withdraw from the positioning groove 3041.

[0026] Next, the other end of the adjustment screw 506 is connected to an adjustment bolt 508. A first adjustment groove 2021 is provided on the first connector 202. The first adjustment groove 2021 is arranged directly above the adjustment bolt 508. Through the first adjustment groove 2021, a tool can be used to screw the adjustment bolt 508, thereby driving the adjustment screw 506 to rotate. The adjustment bolt 508 can be an internal hexagon or an external hexagon. Furthermore, a matching internal hexagon or external hexagon socket wrench can be selected to screw the adjustment screw 506. In addition, the adjustment screw 506 is located at the center of the second spring 502, and the maximum height of the adjustment screw 506 extending out of the first slider 5010 is less than the maximum compression amount of the first insertion post 501 against the second spring 502. In this way, the situation where the adjustment screw 506 interferes with the second spring 502 and the adjustment screw 506 interferes with the first insertion post 501 will not occur.

[0027] Further, the first adjustment groove 2021 of this embodiment is for the insertion of a socket wrench. Therefore, in order to protect the first adjustment groove 2021, as Figure 4 and 7 shown, an annular groove is provided on the outer circumferential end surface of the first connector 202 at the position of the first adjustment groove 2021. The first adjustment grooves 2021 are all located within this annular groove, and the sealing sleeve 10 is clamped within this annular groove, and the first adjustment groove 2021 is protected by the sealing sleeve 10.

[0028] As Figures 9 to 14 shown, a detachable protective electromagnetic flowmeter according to the second embodiment of the present invention is shown. As Figure 9 and 10 shown, the adapter unit 3 of this embodiment also includes a support ring 301 and a second connector 302. A first slot 304 adapted to the first plug post 501 is provided on the upper circumferential end surface of the second connector 302. The flange connection unit 2 also includes a flange plate 201 and a first connector 202. An annular installation cavity 2020 is provided at one end of the first connector 202, and a plug post unit 5 is installed within the installation cavity 2020. However, the difference from the first embodiment is that the second connector 302 of the adapter unit 3 of this embodiment does not have an unlocking groove 305, and the plug post unit 5 of this embodiment has a first plug post 501 and a telescopic seat 509. As Figures 11 to 14 shown, the telescopic seat 509 is in a cavity shape. One end of the first plug post 501 is slidably arranged within the telescopic seat 509 through a second slider 5012. A fourth spring 511 is provided within the telescopic seat 509, and one end of the fourth spring 511 abuts against the second slider 5012, that is, the first plug post 501 can be pushed outwards through the second slider 5012. As Figure 5As shown, one end of the first insertion post 501 away from the second slider 5012 is a cam surface facing one side of the main body 1, and the other side is a stop surface. A fifth spring 9 is provided in the installation cavity 2020 on the side of the telescopic seat 509 facing the main body 1. One end of the fifth spring 9 is fixedly connected to the side surface of the telescopic seat 509, and the other end of the fifth spring 9 is fixedly connected to the inner wall of the installation cavity 2020 opposite to the telescopic seat 509. In this embodiment, a first adjustment groove 2021 is formed on the circumferential outer end surface of the first connector 202. Then, a guide block 510 is connected to the end of the telescopic seat 509 away from the first insertion post 501. The telescopic seat 509 is horizontally slidably arranged in the installation cavity 2020, and the guide block 510 is slidably adapted to the first adjustment groove 2021, that is, the first adjustment groove 2021 of this embodiment is used for slidable adaptation with the guide block 510. A second adjustment groove 2022 is formed on the circumferential inner end surface of the first connector 202, and the second adjustment groove 2022 of this embodiment is used for guiding the first insertion post 501. The first insertion post 501 extends out of the second adjustment groove 2022, and when the first insertion post 501 cooperates with the second adjustment groove 2022, the second adjustment groove 2022 is used to limit the lateral movement of the first insertion post 501. In addition, the telescopic seat 509 slides along the first adjustment groove 2021 through the guide block 510, so that the first insertion post 501 retracts into the telescopic seat 509 under the action of the cam surface; in order to ensure the use effect of the cam surface on the first insertion post 501, as Figure 14 shown, a slope is provided on the inner side of the second adjustment groove 2022 where the cam surface is located, and this slope is used to ensure the rebound effect of the first insertion post 501 and prevent the first insertion post 501 from getting stuck.

[0029] It should be noted that when the first connector 202 and the second connector 302 need to be docked, there is no need to find a reference between the first connector 202 and the second connector 302, and they can be connected at any position. First, the cam surface of the first insertion post 501 encounters one end of the second connector 302 and compresses the fourth spring 511 to retract. Then, when reaching the first slot 304, under the action of the fourth spring 511, the first insertion post 501 falls into the first slot 304. At this time, under the action of the stop surface on the first insertion post 501, the first insertion post 501 and the first slot 304 are locked with each other, and at this time, the first connector 202 and the second connector 302 cannot be separated by brute force after being connected.

[0030] When the first connector 202 and the second connector 302 need to be separated, the guide block 510 can be toggled to move towards the side of the fifth spring 9, so as to retract the first insertion post 501 into the telescopic seat 509 along the slope by using the cam surface of the first insertion post 501, and then separate the first insertion post 501 from the first slot 304, so that the first connector 202 and the second connector 302 can be easily separated.

[0031] To improve the unlocking effect between the first plug post 501 and the first slot 304 in this embodiment, as Figure 11 and 14 shown, a sliding sleeve 6 is provided on the circumferential outer end surface of the first connector 202 at the first adjustment groove 2021. The sliding sleeve 6 is fixedly connected to all the guiding blocks 510 on the first connector 202. In this way, when the sliding sleeve 6 is toggled, all the first plug posts 501 retract to achieve a stable and rapid unlocking effect.

[0032] In addition, to ensure that the first adjustment groove 2021 is not exposed, in this embodiment, the width of the sliding sleeve 6 is set to be greater than twice the width of the first adjustment groove 2021, and the guiding block 510 is connected to the middle position in the width direction of the sliding sleeve 6. Combining Figure 14 , in this way, under the action of the fifth spring 9, the guiding block 510 is displaced to the rightmost end of the transverse position. In this position, since the guiding block 510 is connected to the middle position in the width direction of the sliding sleeve 6, the left half of the sliding sleeve 6 is used to block the first adjustment groove 2021. When unlocking, the guiding block 510 moves to the leftmost end of the transverse position, and at this time, the right half of the sliding sleeve 6 can block the first adjustment groove 2021. Therefore, in addition to playing the role of unlocking, the sliding sleeve 6 can also prevent dust or impurities from entering the first adjustment groove 2021.

[0033] As Figures 15 to 18 shown, a detachable protective electromagnetic flowmeter according to the third embodiment of the present invention is based on the first embodiment or the second embodiment. As Figure 16 shown, a telescopic cavity 30321 is opened in the second connection block 3032. A telescopic head 3033 is slidably arranged in the telescopic cavity 30321. A first spring 3034 is arranged in the telescopic head 3033. The first spring 3034 ejects the telescopic head 3033 from the opening at one end of the second connection block 3032. As Figure 18 shown, a third slot 403 corresponding to the telescopic head 3033 is also opened at the end of the clamping groove. When the second connection block 3032 is inserted into the second slot 401, the support ring 301 is rotated. Then, the first connection block 3031 enters the limiting groove 402 and rotates along the limiting groove 402. When the first connection block 3031 rotates to the end of the limiting groove 402 and a "click" sound is heard, at this time, the telescopic head 3033 falls into the third slot 403, preventing relative rotation between the support ring 301 and the inner lining 4 after connection and improving the stability of their connection.

[0034] As Figure 17As shown, in order to further improve the stability after the support ring 301 is connected to the inner liner 4, the telescopic head 3033 in this embodiment adopts a conical surface or a cam surface. If the telescopic head 3033 adopts a conical surface, then the third slot 403 adopts a conical hole corresponding to the telescopic head 3033. Through the cooperation of the conical surface and the conical hole, it is possible to avoid the shaking after the support ring 301 is connected to the inner liner 4, and the stability after their connection is further improved.

[0035] Finally, it should be noted that the above are only the preferred embodiments of the present invention and are not used to limit the present invention. Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A protective electromagnetic flowmeter that is easy to disassemble and assemble, comprising a body (1) and a flange connection unit (2), characterized in that: The body (1) is provided with an inner liner (4), and the two ends of the inner liner (4) are connected to adapter units (3), the adapter units (3) are abutted against the two ends of the body (1), the inner liner (4) is pressed into the body (1), and the two ends of the inner liner (4) are fixedly connected to the body (1) through the adapter units (3), and the flange connection units (2) are fixedly connected to the adapter units (3) at the two ends of the body (1); at least two flanges are provided on the end surfaces of both sides of the inner liner (4) in a rotationally symmetrical shape. A snap-fit ​​groove, an insert unit (303) corresponding to the snap-fit ​​groove is fixed on one end surface of the adapter unit (3), the adapter unit (3) and the liner (4) are rotatably snap-fitted and fixed to the snap-fit ​​groove via the insert unit (303), the other side of the adapter unit (3) is snap-fitted and fixed to the flange connection unit (2), a first sealing ring (7) is provided between the flange connection unit (2) and the adapter unit (3), and a second sealing ring (8) is provided between the adapter unit (3) and the liner (4).

2. The protective electromagnetic flowmeter that is easy to disassemble and assemble according to claim 1 is characterized in that: Any of the snap-fitting slots comprises a second slot (401) and a limiting slot (402), the second slot (401) being arranged at one end of the limiting slot (402), the plug-in block unit (303) comprising a first connection block (3031) adapted to the limiting slot (402) and a second connection block (3032) adapted to the second slot (401), the second connection block (3032) being inserted into the snap-fitting slot from the second slot (401) and rotating so that the first connection block (3031) enters the limiting slot (402), the limiting slot (402) abuts against the second connection block (3032) to limit the plug-in block unit (303) through the snap-fitting slot.

3. The protective electromagnetic flowmeter that is easy to disassemble and assemble according to claim 2 is characterized in that: The flange connection unit (2) comprises a flange plate (201) and a first connection head (202); one end of the first connection head (202) is provided with an annular installation cavity (2020); a plug-in column unit (5) is installed in the installation cavity (2020); the plug-in column unit (5) comprises a first plug-in column (501) and a second spring (502); one end of the first plug-in column (501) is slidably arranged in the installation cavity (2020) via a first slider (5010); a second adjustment groove (2022) is provided on the inner side of the first connection head (202) for the first plug-in column (501) to extend out; the second spring (502) is installed in the installation cavity (2020) and the second spring (502) is installed in the installation cavity (2020). One end of the first plug post (502) abuts against the first plug post (501), the adapter unit (3) comprises a support ring (301) and a second connector (302), the second connector (302) and the plug block unit (303) are respectively fixed on both sides of the support ring (301), a first slot (304) for inserting the other end of the first plug post (501) is provided on the circumferential end surface of the second connector (302), the first slot (304) is an annular cavity, the second connector (302) is provided with an unlocking slot (305) connected to the side of the first slot (304), and the first plug post (501) can be withdrawn from the first slot (304) through the unlocking slot (305).

4. The protective electromagnetic flowmeter that is easy to disassemble and assemble according to claim 3 is characterized in that: An L-shaped adjustment cavity (5011) is formed in the portion of the first plug post (501) extending out of the second adjustment slot (2022); a second plug post (503) is provided in the horizontal cavity of the adjustment cavity (5011); one end of the second plug post (503) is connected to a third slider (5031) and is slidably arranged in the horizontal cavity of the adjustment cavity (5011) through the third slider (5031); a first wedge block (504) is also slidably arranged in the horizontal cavity of the adjustment cavity (5011); a second wedge block (505) is slidably arranged in the vertical cavity of the adjustment cavity (5011); the first wedge block (504) and the second wedge block (505) are abutted against each other; the first wedge block (504) is used to push the second wedge block (505) to move left and right; a third spring (5031) is provided between the third slider (5031) and the first wedge block (504). 07), a threaded groove for installing an adjusting screw (506) is provided on the first sliding block (5010), and an adjusting screw (506) is connected in the threaded groove, one end of the adjusting screw (506) extends into the vertical cavity of the adjusting cavity (5011) and is rotatably connected to one end of the second wedge block (505), and the other end of the adjusting screw (506) is connected to an adjusting bolt (508), and a first adjusting groove (2021) is provided on the first connecting head (202), and the first adjusting groove (2021) is arranged directly above the adjusting bolt (508), and a positioning groove (3041) for plugging in the second plug column (503) is provided on the inner side of the first slot (304), and a sealing sleeve (10) is sleeved on the circumferential outer end surface of the first connecting head (202) at the first adjusting groove (2021).

5. The protective electromagnetic flowmeter that is easy to disassemble and assemble according to claim 4 is characterized in that: An annular groove is provided on the circumferential outer end surface of the first connector (202) at the first adjustment groove (2021), the first adjustment groove (2021) is located in the annular groove, the sealing sleeve (10) is clamped in the annular groove, and one end of the first plug post (501) that cooperates with the first slot (304) and one end of the second plug post (503) that cooperates with the positioning groove (3041) both have a conical cross-section shape.

6. The protective electromagnetic flowmeter that is easy to disassemble and assemble according to claim 2 is characterized in that: The flange connection unit (2) comprises a flange plate (201) and a first connection head (202), one end of the first connection head (202) is provided with an annular installation cavity (2020), a plug-in column unit (5) is installed in the installation cavity (2020), the plug-in column unit (5) comprises a first plug-in column (501) and a telescopic seat (509), one end of the first plug-in column (501) is arranged in the telescopic seat (509), one end of the telescopic seat (509) away from the first plug-in column (501) is connected to a guide block (510), the telescopic seat (509) is slidably arranged in the installation cavity (2020), one end of the first plug-in column (501) is connected to a second slider (5012), a fourth spring (511) is provided in the telescopic seat (509) and one end of the fourth spring (511) is abutted against the second slider (5012), and one end of the first plug-in column (501) away from the second slider (5012) is directed toward the body (1) One side is a cam surface, and the other side is a stop surface. A fifth spring (9) is provided in the installation cavity (2020) on the side of the telescopic seat (509) facing the main body (1). One end of the fifth spring (9) is fixedly connected to the side of the telescopic seat (509), and the other end of the fifth spring (9) is fixedly connected to the inner wall of the installation cavity (2020) opposite to the telescopic seat (509). A first adjustment groove (2021) is provided on the circumferential outer end surface of the first connecting head (202). The guide block (510) is slidably matched with the first adjustment groove (2021). A second adjustment groove (2022) is provided on the circumferential inner end surface of the first connecting head (202). The second adjustment groove (2022) is used for the first plug column (501) to extend. The telescopic seat (509) slides along the first adjustment groove (2021) through the guide block (510), so that the first plug column (501) retracts into the telescopic seat (509) under the action of the cam surface.

7. The protective electromagnetic flowmeter that is easy to disassemble and assemble according to claim 6 is characterized in that: The adapter unit (3) comprises a support ring (301) and a second connector (302); a first slot (304) adapted to the first plug post (501) is provided on an upper circumferential end surface of the second connector (302).

8. The protective electromagnetic flowmeter that is easy to disassemble and assemble according to claim 7 is characterized in that: A sliding sleeve (6) is provided on the circumferential outer end surface of the first connector (202) at the first adjustment groove (2021); the width of the sliding sleeve (6) is greater than twice the width of the first adjustment groove (2021); and the guide block (510) is connected to the middle position of the sliding sleeve (6) in the width direction.

9. The protective electromagnetic flowmeter that is easy to disassemble and assemble according to claim 8 is characterized in that: A telescopic cavity (30321) is provided in the second connecting block (3032), a telescopic head (3033) is slidably provided in the telescopic cavity (30321), a first spring (3034) is provided in the telescopic head (3033), the first spring (3034) pushes the telescopic head (3033) out of an opening at one end of the second connecting block (3032), and a third slot (403) corresponding to the telescopic head (3033) is also provided in the clamping groove, and the third slot (403) is arranged at one end of the limiting groove (402) away from the second slot (401).

10. The protective electromagnetic flowmeter that is easy to assemble and disassemble according to claim 9, characterized in that: The telescopic head (3033) is a conical cross-section, and the third slot (403) is a conical hole corresponding to the telescopic head (3033).

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