Sealing structure and electromagnetic water meter

Abstract

The embodiment of the utility model provides a sealing structure and an electromagnetic water meter, and the sealing structure comprises a shell which comprises a fixed end and an extending end, the shell is enclosed to form a mounting cavity, an opening is formed in one side, close to the fixed end, of the shell, and a first sealing groove is formed in the position, located at the opening, of the fixed end; the cover body comprises a connecting end and a protruding end, the connecting end is used for being detachably connected with the fixed end, the protruding end protrudes towards the side away from the fixed end, and a second sealing groove is formed in the side, close to the opening, of the protruding end; wherein the first sealing groove is used for arranging a sealing rubber strip so as to seal a connecting gap between the shell and the cover body, and the second sealing groove is used for arranging a sealing rubber strip so as to seal a connecting gap between the cover body and a part located in the mounting cavity. According to the sealing structure and the electromagnetic water meter, through the arrangement of the sealing groove, the sealing performance and the water discharging performance of the whole electromagnetic water meter are effectively improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of electromagnetic water meters, and particularly relates to a sealing structure and an electromagnetic water meter. BACKGROUND

[0002] An electromagnetic water meter is a flow measurement instrument designed based on Faraday's law of electromagnetic induction, and is widely used in many fields such as urban water supply, sewage treatment, and agricultural irrigation. Its main features include: it can realize wide-range ratio measurement from extremely low flow rate to extremely high flow rate, ensuring accuracy under small flow rate and large flow rate; there are no mechanical rotating parts inside, avoiding errors and failures caused by mechanical wear of traditional mechanical water meters; it has strong anti-electromagnetic interference and anti-chemical corrosion capabilities, and is suitable for use in various complex environments; it can not only measure flow rate, but also monitor multiple parameters such as pressure and temperature, and support remote data transmission.

[0003] However, the sealing materials of the electromagnetic water meters on the market may lose elasticity due to aging after a period of use, resulting in a decline in sealing effect. The joints between the housing and various components of the electromagnetic water meter are potential leakage points. If the sealing of these parts is poor, water or moisture may penetrate into the interior, causing short circuit or damage to electronic components.

[0004] In summary, the sealing performance and waterproof performance of the current electromagnetic water meter are not high enough. CONTENT OF THE INVENTION

[0005] Therefore, the embodiments of the present application provide a sealing structure and an electromagnetic water meter to solve the technical problem of poor sealing performance of the existing electromagnetic water meter.

[0006] In a first aspect, the embodiments of the present application provide a sealing structure, comprising:

[0007] A housing comprising a fixed end and an extended end, the housing enclosing a mounting cavity, and an opening is formed on one side close to the fixed end, and a first sealing groove is arranged at the fixed end at the opening;

[0008] A cover comprising a connecting end and a protruding end, the connecting end being used for detachable connection with the fixed end, the protruding end protruding towards a side away from the fixed end, and a second sealing groove is formed on a side of the protruding end close to the opening;

[0009] The first sealing groove is used for arranging a sealing rubber strip to seal the connecting gap between the housing and the cover, and the second sealing groove is used for arranging a sealing rubber strip to seal the connecting gap between the cover and the components in the mounting cavity.

[0010] In some embodiments, the first sealing groove is arranged circumferentially around the housing.

[0011] In some embodiments, the second sealing groove is arranged circumferentially around the cover.

[0012] In some embodiments, the fixed end is protruded towards a direction away from the shell to form a first protrusion, and the connecting end is protruded towards a direction away from the cover to form a second protrusion.

[0013] The first protrusion is provided with a first connecting hole, and the second protrusion is provided with a second connecting hole. A connecting member is arranged to pass through the first connecting hole and the second connecting hole to fix the cover and the shell.

[0014] In some embodiments, the sealing structure further comprises a mounting box for accommodating a meter core and a battery box for accommodating a battery, and the mounting box and the battery box are located in the mounting cavity.

[0015] One end of the mounting box is in abutment with the cover, the other end of the mounting box is connected with one end of the battery box, and the other end of the battery box is connected with the shell.

[0016] In some embodiments, the mounting box comprises:

[0017] a top cover connected in abutment with the protruding end of the cover;

[0018] a base connected in a detachable manner with the battery box; and

[0019] a side shell connected with the top cover and the base respectively, and the side shell, the top cover and the base form a mounting space for accommodating a meter core of a battery water meter.

[0020] In some embodiments, the battery box comprises:

[0021] a shell forming an accommodating space and a mounting port, the accommodating space being used for accommodating a battery;

[0022] a top cover arranged at the mounting port;

[0023] The top cover is provided with a baffle, and the baffle and the inner side wall of the shell form a sealing glue groove for sealing glue to seal the shell and the top cover.

[0024] In some embodiments, one end of the mounting box close to the battery box is provided with a first connecting member, and one end of the battery box close to the mounting box is provided with a second connecting member connected and matched with the first connecting member.

[0025] In some embodiments, the first connecting piece comprises a first clamping portion and a second clamping portion, one end of the second clamping portion is connected to the middle portion of the first clamping portion, and the other end of the second clamping portion extends towards the middle portion of the base;

[0026] The second connecting piece is provided with a clamping groove for clamping the first clamping portion and a gap for clamping the second clamping portion, and the gap is in communication with the clamping groove.

[0027] In some embodiments, the protruding end is further provided with a clearance groove on one side close to the opening, which provides a setting space for the components located in the installation cavity.

[0028] In some embodiments, the extending end is further provided with a wire hole for the components located in the installation cavity to pass through and connect wires.

[0029] In a second aspect, the embodiments of the present application provide an electromagnetic water meter comprising the sealing structure of the first aspect;

[0030] a meter core located in the installation cavity; and

[0031] a battery located in the installation cavity.

[0032] The sealing structure and the electromagnetic water meter provided by the embodiments of the present application effectively improve the sealing performance of the entire electromagnetic water meter by setting the sealing grooves, specifically setting the first sealing groove and the second sealing groove on the shell and the cover, then setting the sealing rubber strip in the first sealing groove to seal the connecting gap between the shell and the cover, and setting the sealing rubber strip in the second sealing groove to seal the connecting gap between the cover and the components located in the installation cavity, thereby effectively improving the sealing performance of the entire electromagnetic water meter and improving the water discharge performance. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0034] Figure 1 is a structure diagram of the electromagnetic water meter provided by the embodiments of the present application Figure One ;

[0035] Figure 2 is a structure diagram of the cover in the electromagnetic water meter provided by the embodiments of the present application;

[0036] Figure 3 is a structure diagram of the shell in the electromagnetic water meter provided by the embodiments of the present application;

[0037] Figure 4 is a structural schematic of an electromagnetic water meter provided by an embodiment of the present application Figure Two ;

[0038] Figure 5 is Figure 4 a sectional structural schematic in A-A direction in the electromagnetic water meter

[0039] Figure 6 is a structural schematic of a mounting box in an electromagnetic water meter provided by an embodiment of the present application Figure One ;

[0040] Figure 7 is a structural schematic of a mounting box in an electromagnetic water meter provided by an embodiment of the present application Figure Two ;

[0041] Figure 8 is a structural schematic of a battery box in an electromagnetic water meter provided by an embodiment of the present application Figure One ;

[0042] Figure 9 is a structural schematic of a battery box in an electromagnetic water meter provided by an embodiment of the present application Figure Two ;

[0043] Figure 10 is a structural schematic of a battery box in an electromagnetic water meter provided by an embodiment of the present application Figure Three .

[0044] In the drawings:

[0045] 10, housing; 11, fixed end; 110, first sealing groove; 111, first protrusion; 1110, first connecting hole; 12, extension end; 120, wire outlet hole; 121, positioning hole;

[0046] 20, cover body; 21, connecting end; 211, second protrusion; 2110, second connecting hole; 22, protruding end; 220, second sealing groove; 221, accommodation groove;

[0047] 30, mounting box; 31, top cover; 32, base; 320, interface; 33, side shell; 34, first connecting piece; 341, first clamping part; 342, second clamping part;

[0048] 40, battery box; 41, outer shell; 411, positioning column; 42, upper cover; 421, baffle; 422, pull ring; 400, sealing glue groove; 43, second connecting piece; 431, clamping groove; 432, notch. DETAILED DESCRIPTION

[0049] In the following description, for purposes of explanation and not limitation, specific details are set forth such as particular architectures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known methods, devices, circuits, and

[0050] It should also be understood that the term "and / or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items, and that the term "at least one of' as used herein means "one, two, three, four, or more" and the like.

[0051] It should be noted that when an element is referred to as being "on" or "connected to" another element, it can be directly on or connected to the other element or indirectly on or connected to the other element by way of one or more other elements. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element by way of one or more other elements.

[0052] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, as used herein, are intended to refer to the orientation or position of the apparatus or element as shown in the drawings, and are merely used for convenience in describing the present embodiments and simplifying the description, and are not intended to indicate or imply that the apparatus or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present embodiments.

[0053] In addition, in the description of the embodiments of the present application and the appended claims, the terms "first", "second", "third", etc. are used merely as identifiers for distinguishing the description, and should not be understood as indicating or implying relative importance.

[0054] The phrase "some embodiments", "certain embodiments", "some examples", "a some examples", and the like, as used herein does not necessarily refer to the same embodiments or the same example, and the different instances can refer to one or more but not all embodiments or examples. Furthermore, the phrase "one or more of, as used herein, does not exclude that other (for example, additional) suitable entities can also be present. The words "comprising," "including," "containing," and similar meanings are used herein to mean "including but not limited to." The word "comprising" is used herein to mean "including at least" and to not exclude other, additional, or different items or components. "Multiple" means two or more.

[0055] A first aspect of the embodiments of the present application provides a sealing structure, as shown inFigures 1 to 3 As shown, the sealing structure comprises a shell 10 and a cover 20;

[0056] The shell 10 comprises a fixed end 11 and an extension end 12, the shell 10 encloses to form a mounting cavity, and an opening is arranged on one side close to the fixed end 11, and the fixed end 11 is provided with a first sealing groove 110 at the opening;

[0057] The cover 20 comprises a connecting end 21 and a protruding end 22, the connecting end 21 is used for detachable connection with the fixed end 11, the protruding end 22 protrudes towards the side away from the fixed end 11, and the protruding end 22 is provided with a second sealing groove 220 towards the side close to the opening;

[0058] The first sealing groove 110 is used for arranging a sealing rubber strip to seal the connecting gap between the shell 10 and the cover 20, and the second sealing groove 220 is used for arranging a sealing rubber strip to seal the connecting gap between the cover 20 and the components located in the mounting cavity.

[0059] The sealing structure provided by the embodiment of the application, by arranging the sealing grooves, specifically arranging the first sealing groove 110 and the second sealing groove 220 on the shell 10 and the cover 20, then arranging the sealing rubber strip in the first sealing groove 110 to seal the connecting gap between the shell 10 and the cover 20, and arranging the sealing rubber strip in the second sealing groove 220 to seal the connecting gap between the cover 20 and the components located in the mounting cavity, thus effectively improving the sealing performance of the entire electromagnetic water meter, thereby improving the water discharge performance.

[0060] In application, the shell 10 and the cover 20 are circular as a whole. In this way, the shape design of the electromagnetic water meter on the market can be adapted. In other embodiments, the shell 10 and the cover 20 can also be other shapes, such as oval, square, etc.

[0061] The connecting end 21 and the fixed end 11 are detachably connected, including but not limited to connecting the connecting end 21 and the fixed end 11 through screw connection, clamping, plug-in connection and the like. As long as the cover 20 and the shell 10 can be detachable. Because in actual application, the situation that the cover 20 needs to be disassembled and the components located in the mounting cavity need to be overhauled may occur. The existence of the mounting cavity provides sufficient installation space and position for the components. The existence of the opening is convenient for installing the components into the mounting cavity.

[0062] The first sealing groove 110 is arranged at the opening of the fixed end 11, so that the sealing strip arranged in the first sealing groove 110 can effectively seal the connection between the cover 20 and the shell 10, thereby improving the water discharge performance. The second sealing groove 220 is arranged at the inner side wall of the protruding end 22, and is specifically arranged to seal the connection gap between the cover 20 and the internal components of the mounting cavity. The sealing strip can be a sealing ring, a sealing strip, or a sealing strip formed by pouring sealing glue.

[0063] In an application, the shell 10 is a hollow cylinder as a whole, and the internal mounting cavity is used to mount components. The bottom of the shell 10 is provided with a wire outlet hole 120 for the components in the mounting cavity to pass through and be connected. In another embodiment, the bottom of the mounting cavity is further provided with a positioning hole 121 for positioning and mounting the internal components. The cover 20 is a circular block as a whole, and the protruding portion protrudes away from the shell 10. The inner side wall of the protruding portion is provided with a clearance groove 221 for providing a setting space for the components in the mounting cavity, thereby improving the mounting stability of the components of the entire electromagnetic water meter.

[0064] In some embodiments, as shown in Figure 1 and Figure 2 , the first sealing groove 110 is circumferentially arranged around the shell 10. In this way, the sealing strip arranged in the first sealing groove 110 can seal along the entire circumference of the shell 10. In some embodiments, as shown in Figure 1 and Figure 3 , the second sealing groove 220 is circumferentially arranged around the cover 20. In this way, the sealing strip arranged in the second sealing groove 220 can seal along the entire circumference of the cover 20.

[0065] In some embodiments, as shown in Figures 1 to 3 , the fixed end 11 protrudes away from the shell 10 to form a first protruding strip 111, and the connecting end 21 protrudes away from the cover 20 to form a second protruding strip 211.

[0066] The first protruding strip 111 is provided with a first connecting hole 1110, and the second protruding strip 211 is provided with a second connecting hole 2110. The connecting member is arranged to pass through the first connecting hole 1110 and the second connecting hole 2110 to fix the cover 20 and the shell 10. The connecting member is arranged to detachably fix the cover 20 and the shell 10.

[0067] In application, the first and second convex strips 111 and 211 are annular, the hole walls of the first and second connecting holes 1110 and 2110 are provided with threads, and the connecting piece is a screw, so that the cover 20 and the shell 10 are fixed by the screw passing through the first and second connecting holes 1110 and 2110. The first and second connecting holes 1110 and 2110 are evenly arranged around the first and second convex strips 111 and 211, respectively, so as to enhance the connection stability between the cover 20 and the shell 10.

[0068] In some embodiments, as shown in Figure 4 and Figure 5 , the sealing structure further comprises a mounting box 30 for accommodating the watch movement and a battery box 40 for accommodating the battery, and the mounting box 30 and the battery box 40 are located in the mounting cavity.

[0069] One end of the mounting box 30 abuts against the cover 20, and the other end of the mounting box 30 is connected to one end of the battery box 40, and the other end of the battery box 40 is connected to the shell 10. The core component of the electromagnetic water meter is the watch movement, so a mounting box 30 is needed to install and fix the watch movement and provide physical protection. The electromagnetic water meter needs power to drive the internal electronic components to work, so it is equipped with a battery box 40 for installing the battery.

[0070] In application, the mounting box 30 is located above the battery box 40. This arrangement is because the watch movement is the core measuring component and needs to be strengthened for physical protection, and the battery itself is heavy, so it is arranged below to avoid interfering with the work of the watch movement in the mounting box 30.

[0071] In some embodiments, as shown in Figures 5 to 7 , the mounting box 30 comprises a top cover 31, a base 32 and a side shell 33.

[0072] The top cover 31 is connected to the protruding end 22 of the cover 20;

[0073] The base 32 is detachably connected to the battery box 40;

[0074] The side shell 33 is connected to the top cover 31 and the base 32, respectively, and the side shell 33, the top cover 31 and the base 32 form a mounting space, which is used to accommodate the watch movement of the battery water meter.

[0075] In application, the entire mounting box 30 has good sealing performance, mainly due to its sealing process, which uses UV glue to fill and seal the outer circle of the transparent side shell 33 and the base 32. Only a small amount of glue is needed to achieve the sealing of the side shell 33, and the UV glue can quickly solidify under the irradiation of ultraviolet light, shortening the production cycle.

[0076] In some embodiments, as shown in Figure 7As shown, the bottom of the base 32 is also provided with an interface 320 to facilitate the connection of external devices to the watch movement located in the installation space. The interface 320 is sealed using a low-pressure injection molding process, resulting in high sealing efficiency.

[0077] In some embodiments, such as Figure 5 , Figures 8 to 10 As shown, the battery box 40 includes a housing 41 and a top cover 42;

[0078] The outer casing 41 encloses and forms a receiving space and an installation opening, the receiving space being used to accommodate the battery;

[0079] The top cover 42 is located at the installation port. The top cover 42 is provided with a baffle 421. The baffle 421 and the inner side wall of the outer shell 41 form a sealing glue groove 400. The sealing glue groove 400 is used to fill the sealing glue to seal the outer shell 41 and the top cover 42.

[0080] In applications, most commercially available battery potting boxes use a whole-body potting process, where the entire battery is covered with glue to ensure waterproofing. However, this approach has several drawbacks: 1. High glue usage and cost; 2. Long glue curing time and increased production time; 3. Difficult disassembly during battery recycling, resulting in high recycling costs. The battery box 40 in this embodiment utilizes a sealing groove 400 formed by the interaction of the upper cover 42's circular vertical surface and the inner wall of the housing 10, isolating the battery from the potting glue. This achieves waterproofing while reducing glue usage and curing time. Furthermore, it effectively solves the problem of difficult battery disassembly during recycling, thus lowering recycling costs.

[0081] In applications, such as Figure 8 and Figure 9 As shown, a pull ring 422 has been added to the top cover 42 to facilitate lifting the battery and avoid directly pulling the power cord.

[0082] In some embodiments, such as Figures 6 to 9 As shown, the mounting box 30 has a first connector 34 at one end near the battery box 40, and the battery box 40 has a second connector 43 at the other end near the mounting box 30, which connects and cooperates with the first connector 34. In application, the first connector 34 and the second connector 43 can be clips and slots, magnetic components, etc. They serve two purposes: firstly, to connect and fix the device, and secondly, to position the battery and the watch movement.

[0083] In some embodiments, such as Figures 6 to 9 As shown, the first connector 34 includes a first snap-fit ​​portion 341 and a second snap-fit ​​portion 342. One end of the second snap-fit ​​portion 342 is connected to the middle of the first snap-fit ​​portion 341, and the other end of the second snap-fit ​​portion 342 extends toward the middle of the base 32.

[0084] The second connector 43 has a slot 431 for the first latching part 341 to engage and a notch 432 for the second latching part 342 to engage. The notch 432 communicates with the slot 431. This allows for quick positioning and a stable connection between the battery box 40 and the mounting box 30.

[0085] In applications, such as Figure 10 As shown, the bottom of the outer casing 41 is provided with a positioning post 411, and the corresponding position of the outer casing 10 is provided with a positioning hole 121 / positioning groove, which facilitates the positioning and fixing of the battery box 40 during installation. The bottom of the outer casing 12 is provided with a cable outlet hole 120 for easy cable entry and exit.

[0086] This application embodiment also provides an electromagnetic water meter, including the sealing structure described in the first aspect, a meter core (not shown), and a battery (not shown), wherein the meter core and the battery are both installed in the mounting cavity.

[0087] The electromagnetic water meter provided in this application embodiment has all the beneficial effects described in the first aspect because it includes the sealing structure described in the first aspect.

[0088] In this application, the watch movement is installed inside the mounting box 30, and the battery is installed in the battery box 40. Thus, even when replacing the battery in a high-humidity environment (i.e., after opening the cover), all components inside the mounting cavity can still function normally without being affected by moisture.

[0089] In some embodiments, the sealing structure described in the first aspect also includes a meter barrel (cover 20 and housing 10), which is the outer protective shell of the water meter, used to protect the internal components from the influence of the external environment, such as corrosion and impact. It also serves as a seal to prevent water from entering the internal circuitry, ensuring the normal operation and service life of the water meter. The meter core is the core component of the electromagnetic water meter, comprising an electromagnetic coil and a conductive liquid channel located in a magnetic field. When water flows through this channel, an electromotive force proportional to the flow velocity is generated. By measuring the magnitude of this electromotive force, the amount of water flowing through the meter can be calculated. This measurement method eliminates the need for mechanical rotating parts, thus offering high accuracy and stability while reducing maintenance requirements. Electromagnetic water meters require electricity to drive their internal electronic components, therefore a battery box 40 is provided for installing batteries. The choice and capacity of the battery directly affect the water meter's operating time and replacement frequency. Modern electromagnetic water meters often employ low-power designs to extend battery life and reduce maintenance costs.

[0090] In the above embodiments, the descriptions of each embodiment have different focuses. For parts that are not described in detail or recorded in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0091] The above-described embodiments are only used to illustrate the technical solutions of the present application, but not limit them; although the foregoing embodiments of the present application are described in detail, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced by equivalent ones; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application, and should be included in the protection scope of the embodiments of the present application.

Claims

1. A seal structure, characterized by, The sealing structure comprises: a shell comprising a fixed end and an extended end, the shell enclosing a mounting cavity, and an opening being formed on one side close to the fixed end, the fixed end being provided with a first sealing groove at the opening; a cover comprising a connecting end and a protruding end, the connecting end being used for detachable connection with the fixed end, the protruding end being protruded towards a side away from the fixed end, and the protruding end being provided with a second sealing groove towards a side close to the opening; wherein the first sealing groove is used for setting a sealing rubber strip to seal a connecting gap between the shell and the cover, and the second sealing groove is used for setting a sealing rubber strip to seal a connecting gap between the cover and a component located in the mounting cavity.

2. The seal structure of claim 1, wherein The first sealing groove is circumferentially arranged around the shell. And / or, the second sealing groove is circumferentially arranged around the cover.

3. The seal structure of claim 1, wherein The fixed end is protruded towards a direction away from the shell to form a first protruding strip, and the connecting end is protruded towards a direction away from the cover to form a second protruding strip; wherein the first protruding strip is provided with a first connecting hole, and the second protruding strip is provided with a second connecting hole, a connecting member being arranged through the first connecting hole and the second connecting hole to fix the cover and the shell.

4. The seal structure of claim 1, wherein The sealing structure further comprises a mounting box for accommodating a watch core and a battery box for accommodating a battery, the mounting box and the battery box being located in the mounting cavity; one end of the mounting box abutting against the cover, the other end of the mounting box being connected with one end of the battery box, and the other end of the battery box being connected with the shell.

5. The seal structure of claim 4, wherein The mounting box comprises: a top cover abutting against and connected with the protruding end of the cover; a base detachably connected with the battery box; and a side shell connected with the top cover and the base respectively, and the side shell, the top cover and the base enclosing a mounting space for accommodating a watch core of a battery water meter.

6. The seal structure of claim 5, wherein The battery box comprises: an outer shell enclosing a containing space and a mounting port, the containing space being used for accommodating a battery; an upper cover arranged at the mounting port; wherein the upper cover is provided with a baffle, the baffle and an inner side wall of the outer shell forming a sealing rubber groove, and the sealing rubber groove being used for filling sealing rubber to seal the outer shell and the upper cover.

7. The seal structure of claim 5, wherein The mounting box is provided with a first connecting member at one end close to the battery box, and the battery box is provided with a second connecting member connected and matched with the first connecting member at one end close to the mounting box.

8. The seal structure of claim 7, wherein The first connecting member comprises a first clamping part and a second clamping part, one end of the second clamping part being connected with a middle part of the first clamping part, and the other end of the second clamping part extending and arranged towards a middle part of the base; the second connecting member is provided with a clamping groove for clamping the first clamping part and a notch for clamping the second clamping part, the notch being communicated with the clamping groove.

9. The seal structure of any one of claims 1 to 8, wherein, The protruding end is further provided with a clearance groove at a side close to the opening, the clearance groove being used for providing a setting space for a component located in the mounting cavity; and / or, the extended end is further provided with a wire outlet hole for wire outlet and wiring of a component located in the mounting cavity.

10. An electromagnetic water meter characterized by The sealing structure comprises: the sealing structure of any one of claims 1 to 9; a watch core arranged in the mounting cavity; and a battery disposed in the mounting cavity.

Images