Sealing structure and water meter

Abstract

The utility model discloses a sealing structure and a water meter, and belongs to the technical field of water meter monitoring, the sealing structure comprises a shell, a supporting seat, a base and a pin, the supporting seat is sleeved outside the base and is in sealing connection with the base; the shell is sleeved outside the supporting seat and is hermetically connected with the supporting seat; the shell is movably matched with the supporting seat; a sealed first cavity is formed between the supporting seat and the shell, and a sealed second cavity is formed between the base and the shell; the shell is provided with a first pin hole, the supporting seat is provided with a second pin hole corresponding to the first pin hole, the first end of the pin is arranged in the first pin hole, the second end of the pin is arranged in the second pin hole, and the outer diameter of the pin is smaller than the inner diameter of the first pin hole. When the water meter expands with heat and contracts with cold, the size of the space in the sealing structure can be changed in the moving process of the shell, and therefore the pressure difference between the inside and the outside of the sealing structure is eliminated, the deformation phenomenon of the supporting base, the shell and the base is avoided, and the using stability of the sealing structure in the water meter is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water meter monitoring, in particular to a sealing structure and a water meter. Background Art

[0002] With the popularization of intelligent life, water meter reading has also developed from manual meter reading to remote automatic meter reading. The existing remote automatic meter reading is achieved by installing an intelligent meter reader on the water meter. Since the intelligent meter reader is installed separately from the water meter, the sealing performance is poor, and the dial is easily blocked by dirt, which leads to inaccurate readings.

[0003] However, while installing the camera in a sealed structure can achieve accurate readings, in areas with large temperature swings between day and night, the sealed structure is susceptible to thermal expansion and contraction. Exposed to such conditions for extended periods, the sealed structure deforms, leading to air leaks. When this happens, cold air can easily enter the sealed environment, covering the counter dial with moisture and causing inaccurate readings. Consequently, existing sealed structures suffer from poor stability. Summary of the Invention

[0004] The purpose of the utility model is to improve the problem of poor stability of the sealing structure in the existing water meter and to provide a sealing structure and a water meter.

[0005] The technical solutions to achieve the above objectives include the following:

[0006] The sealing structure includes: a housing, a support seat, a base, and a pin, wherein the support seat is sleeved on the outside of the base and is sealed with the base; the housing is sleeved on the outside of the support seat and is sealed with the support seat; the housing and the support seat are movably engaged; a sealed first chamber is formed between the support seat and the housing, and a sealed second chamber is formed between the base and the housing;

[0007] The shell has a first pin hole, the support seat has a second pin hole corresponding to the first pin hole, the first end of the pin is arranged in the first pin hole, and the second end of the pin is arranged in the second pin hole, wherein the outer diameter of the pin is smaller than the inner diameter of the first pin hole.

[0008] In one embodiment, the first pin hole passes through from one side of the shell to the other side of the shell, the inner diameter of the first pin hole is larger than the inner diameter of the second pin hole, and the second end of the pin is interference fit with the second pin hole.

[0009] In one of the embodiments, the sealing structure further comprises a first sealing ring, the outer wall of the base has a first groove, the first groove is arranged along the circumference of the base, the first sealing ring is at least partially installed in the first groove, and the outer wall of the first sealing ring abuts against the outer wall of the base and the inner wall of the support seat respectively.

[0010] In one of the embodiments, the sealing structure further comprises a second sealing ring, the outer wall of the support seat has a second groove, the second groove is arranged along the circumference of the support seat, the second sealing ring is at least partially installed in the second groove, and the outer wall of the second sealing ring abuts against the outer wall of the support seat and the inner wall of the outer shell respectively.

[0011] In one of the embodiments, the number of the first grooves and the second grooves is plural, the number of the first sealing rings corresponds to the number of the first grooves, and the number of the second sealing rings corresponds to the number of the second grooves.

[0012] In one of the embodiments, the top of the base has a positioning block, and the inner wall of the support seat has a positioning groove matched with the positioning block.

[0013] The support seat has a first mounting hole, the base has a second mounting hole corresponding to the first mounting hole, and the sealing structure further comprises a fastener, the first mounting hole and the second mounting hole are used for allowing the fastener to pass through, so that the support seat is fixed to the base by the fastener.

[0014] The utility model further provides a water meter, including main casing, upper cover, the sealing structure as the above, the base of sealing structure includes first connecting part and second connecting part, second connecting part is installed on first connecting part, the outer diameter of second connecting part is less than the outer diameter of first connecting part;

[0015] The first connecting part is arranged on the main casing, the first end of the upper cover is sleeved on the outer wall of the main casing, and the inner wall of the upper cover is threadedly connected with the outer wall of the main casing;The second end of the upper cover abuts against the first connecting part, and the first connecting part is arranged between the second end of the upper cover and the top of the main casing.

[0016] In one of the embodiments, the water meter further comprises a counting dial and a monitoring assembly, the monitoring assembly is at least partially arranged in the first chamber of the sealing structure, the counting dial is arranged in the second chamber of the sealing structure, and the monitoring direction of the monitoring assembly is towards the counting dial.

[0017] In one of the embodiments, the monitoring assembly comprises a battery, a camera and a circuit board, the battery and the circuit board are installed in the first chamber, the camera is installed on the top wall of the outer shell, and the camera is located above the first chamber.

[0018] The camera is electrically connected to the circuit board, and the circuit board is electrically connected to the battery.

[0019] In one embodiment, the water meter further includes a movable cover and a pin shaft, wherein the pin shaft is mounted on the outer shell of the sealing structure, the movable cover is rotatably mounted on the pin shaft, and the movable cover has a rotation path centered on the pin shaft; the outer shell is at least partially made of a transparent material, and the movable cover is arranged above the transparent portion of the outer shell.

[0020] The technical solution provided by the utility model has the following advantages and effects:

[0021] The outer shell and the support seat are movably matched, and the outer diameter of the pin hole is smaller than the inner diameter of the first pin hole. Under the action of the pressure difference, the outer shell can move slightly on the support seat; when the water meter expands and contracts due to thermal expansion and contraction, the outer shell can change the size of the space inside the sealing structure during movement, thereby eliminating the pressure difference between the inside and outside of the sealing structure, avoiding deformation of the support seat, outer shell, and base, and improving the stability of the sealing structure when used in the water meter. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings herein illustrate specific examples of the technical solutions described in the present invention, and together with the specific implementation methods constitute a part of the specification, and are used to explain the technical solutions, principles and effects of the present invention.

[0023] Unless otherwise specified or defined, the same reference numerals in different drawings represent the same or similar technical features, and the same or similar technical features may also be represented by different reference numerals.

[0024] Figure 1 It is a schematic diagram of a water meter in one embodiment of the present utility model;

[0025] Figure 2 This is an exploded view of a water meter in one embodiment of the present utility model;

[0026] Figure 3 This is a cross-sectional view of a water meter in one embodiment of the present utility model. Figure 1 ;

[0027] Figure 4 This is a cross-sectional view of a water meter in one embodiment of the present utility model. Figure 2 ;

[0028] Figure 5 This is a side view of a sealing structure in one embodiment of the present invention;

[0029] Figure 6 In one embodiment of the present invention Figure 5 AA section view;

[0030] Figure 7This is a schematic diagram of the installation of a support assembly in one embodiment of the present utility model;

[0031] Figure 8 It is an enlarged view of the support assembly in one embodiment of the present utility model;

[0032] Figure 9 is a cross-sectional view of a support assembly in one embodiment of the present utility model;

[0033] Figure 10 It is a schematic diagram of a support base in one embodiment of the present utility model;

[0034] Figure 11 It is a schematic diagram of a base in one embodiment of the present utility model;

[0035] Description of reference numerals:

[0036] 100. Water meter;

[0037] 1. Main housing; 11. First interface; 12. Second interface; 13. Mounting cavity;

[0038] 2. Upper cover;

[0039] 3. Sealing structure; 31. Housing; 311. First pin hole; 32. Support seat; 321. Second groove; 322. First chamber; 323. Second chamber; 324. Second pin hole; 325. Positioning groove; 326. First mounting hole; 33. Base; 331. First groove; 332. Positioning block; 333. Second mounting hole; 334. First connecting portion; 335. Second connecting portion; 34. First sealing ring; 35. Second sealing ring; 36. Pin;

[0040] 4. Movable cover; 41. Pin;

[0041] 5. Monitoring components; 51. Battery; 52. Camera; 521. Shooting direction; 53. Circuit board;

[0042] 6. Support assembly; 61. First limiting seat; 611. First limiting groove; 62. Second limiting seat; 621. Second limiting groove; 63. Limiting block; 64. Mounting position; 65. Third limiting seat. DETAILED DESCRIPTION

[0043] In order to facilitate the understanding of the present invention, specific embodiments of the present invention will be described in more detail below with reference to the accompanying drawings.

[0044] Unless otherwise specified or defined, the "first, second..." used in this article is only used to distinguish names and does not represent a specific quantity or order.

[0045] The term "and / or", as used herein, unless otherwise specified and / or as is customary under the circumstances, is to be interpreted to correspond to any one of the associated listed items, particularly the single ones, but also combinations of at least two of the associated listed items.

[0046] It should be noted that when an element is referred to as being "fixed" to another element, it can be directly fixed to the other element or intervening elements can also be present; when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present; when an element is referred to as being "mounted" to another element, it can be directly mounted to the other element or intervening elements can also be present. When an element is referred to as being "disposed" in another element, it can be directly disposed in the other element or intervening elements can also be present.

[0047] Embodiment one

[0048] The utility model provides a kind of sealing structure 3, as Figures 1 to 6 As shown, shell 31, support seat 32, base 33, pin 36, support seat 32 is sleeved in the outside of base 33, and is sealingly connected with base 33;Shell 31 is sleeved in the outside of support seat 32, and is sealingly connected with support seat 32;Shell 31 and support seat 32 are movably matched;Sealed first chamber 322 is formed between support seat 32 and shell 31, and sealed second chamber 323 is formed between base 33 and shell 31;Shell 31 has first pin hole 311, support seat 32 has second pin hole 324 corresponding to first pin hole 311, the first end of pin 36 is arranged in first pin hole 311, and the second end of pin 36 is arranged in second pin hole 324, wherein the outer diameter of pin 36 is less than the inner diameter of first pin hole 311.

[0049] Specifically, this first chamber 322 is used to install counting dial, second chamber 323 is used to install monitoring assembly 5, monitoring assembly 5 is used to read the data of counting dial, in the embodiment, first chamber 322 and second chamber 323 are in sealed state.When water meter 100 is placed in the environment with large diurnal temperature range, thermal expansion and cold shrinkage occur in water meter 100, and pressure difference is generated between inside and outside of water meter 100.Because, shell 31 and support seat 32 are movably matched, and the outer diameter of pin hole 36 is less than the inner diameter of first pin hole 311, shell 31 can slightly move on support seat 32 under the action of pressure difference, pin hole 36 limits the moving distance of shell 31, avoids the gap between shell 31 and support seat 32 due to the excessive moving distance, and avoids causing the air leakage phenomenon of first chamber 322 and second chamber 323.

[0050] Further, when the shell 31 is in sealing connection with the support base 32, the shell 31 also has the function of slightly moving on the support base 32; when the water meter 100 is subjected to thermal expansion and cold contraction, the shell 31 can change the size of the space in the sealing structure 3 during the movement, thereby eliminating the pressure difference between the inside and outside of the sealing structure 3, avoiding the deformation of the support base 32, the shell 31 and the base 33, and improving the stability of the sealing structure 3 in the water meter 100.

[0051] Preferably, as shown in Figure 6 the first pin hole 311 penetrates from one side of the shell 31 to the other side of the shell 31, the inner diameter of the first pin hole 311 is larger than the inner diameter of the second pin hole 324, and the second end of the pin 36 is in interference fit with the second pin hole 324. Specifically, the second end of the pin 36 is installed in the second pin hole 324, which can improve the stability between the pin 36 and the support base 32, and the inner diameter of the first pin hole 311 is larger than the inner diameter of the second pin hole 324, so that the first end of the pin 36 is located in the first pin hole 311. The shell 31 has a certain floating space in the radial direction of the pin 36. When the water meter 100 is subjected to thermal expansion and cold contraction, the shell 31 can move up and down due to the floating space, and the pin 36 limits the distance of the shell 31 moving up and down, avoiding the shell 31 from moving too far from the support base 32 to cause a gap between the shell 31 and the support base 32. Therefore, the structure arranged in this way can improve the stability of the sealing structure 3 while ensuring the sealing performance of the sealing structure 3.

[0052] Preferably, as shown in Figure 6 , Figure 10 , Figure 11 the sealing structure 3 also has a first sealing ring 34, and the outer wall of the base 33 has a first groove 331 extending along the circumference of the base 33, and the first sealing ring 34 is at least partially installed in the first groove 331, and the outer wall of the first sealing ring 34 abuts against the outer wall of the base 33 and the inner wall of the support base 32, respectively. Specifically, by arranging the first sealing ring 34 in the first groove 331, the sealing connection between the support base 32 and the base 33 can be achieved, and in order to further improve the stability of the support base 32 and the base 33, a fastener can be used to fix the base 33 and the support base 32. When the support base 32 and the base 33 are fixed, the sealing structure 3 can avoid displacement between the support base 32 and the base 33 when subjected to thermal expansion and cold contraction, thereby improving the stability of the sealing structure 3.

[0053] Preferably, as shown in Figure 6 , Figure 10 , Figure 11As shown, the sealing structure 3 also has a second sealing ring 35, the outer wall of the support seat 32 has a second groove 321 extending along the circumference of the support seat 32, the second sealing ring 35 is at least partially installed in the second groove 321, and the outer wall of the second sealing ring 35 abuts against the outer wall of the support seat 32 and the inner wall of the shell 31, respectively. Specifically, by arranging the second sealing ring 35 in the second groove 321, the sealing connection between the shell 31 and the support seat 32 can be achieved, but since the second sealing ring 35 can be made of an elastic material, the shell 31 and the support seat 32 are flexibly connected through the second sealing ring 35; when the sealing structure 3 encounters thermal expansion and contraction, the air in the first chamber 322 and the second chamber 323 expands, the shell 31 moves upward, so that the shell 31 has a space for air flow, reduces the pressure difference caused by thermal expansion and contraction, avoids the shell 31 from being extruded and deformed by the pressure, and further improves the stability of the sealing connection between the shell 31 and the support seat 32.

[0054] Preferably, as shown in Figure 10 and Figure 11 , the number of the first grooves 331 and the second grooves 321 is multiple, the number of the first sealing rings 34 corresponds to the number of the first grooves 331, and the number of the second sealing rings 35 corresponds to the number of the second grooves 321. In this embodiment, the first grooves 331 and the second grooves 321 are used to improve the stability of the first sealing rings 34 and the second sealing rings 35, the first sealing rings 34 and the second sealing rings 35 have multiple, which can achieve the multi-stage sealing effect between the support seat 32 and the base 33, and achieve the multi-stage sealing effect between the shell 31 and the support seat 32, and further improve the sealing performance of the first chamber 322 and the second chamber 323.

[0055] In some embodiments, as shown in Figure 10 and Figure 11As shown, the top of the base 33 has a positioning block 332, and the inner wall of the support seat 32 has a positioning groove 325 that cooperates with the positioning block 332; the support seat 32 has a first mounting hole 326, and the base 33 has a second mounting hole 333 corresponding to the first mounting hole 326. The sealing structure 3 also has a fastener, and the first mounting hole 326 and the second mounting hole 333 are both used for the fastener to pass through, so that the support seat 32 is fixed to the base 33 through the fastener. Specifically, during installation, in order to make the first mounting hole 326 correspond to the second mounting hole 333 and improve the assembly efficiency between the support seat 32 and the base 33, the positioning block 332 of the base 33 is used to cooperate with the positioning groove 325 of the support seat 32. When the positioning block 332 is engaged with the positioning groove 325, the first mounting hole 326 corresponds to the second mounting hole 333; then one end of the fastener is passed through the first mounting hole 326 and the second mounting hole 333 in sequence, and the second end of the fastener is used to resist the support seat 32. The fastener can be threadedly connected to the second mounting hole 333, thereby fixing the support seat 32 and the base 33 and improving the assembly efficiency between the support seat 32 and the base 33.

[0056] Example 2

[0057] The present invention also provides a water meter 100, such as Figures 1 to 9 As shown, it includes a main shell 1, a sealing structure 3, a monitoring component 5, and a support component 6. The sealing structure 3 is installed on the main shell 1, and the sealing structure 3 has a first chamber 322 and a second chamber 323; the monitoring component 5 includes a camera 52, a battery 51, and a circuit board 53. The camera 52 is electrically connected to the first end of the circuit board 53, and the second end of the circuit board 53 is electrically connected to the battery 51; the battery 51 and the circuit board 53 are both installed in the first chamber 322, the support component 6 is installed on the top of the sealing structure 3, and the camera 52 is installed on the support component 6; wherein, the camera 52 is arranged at an angle, and the shooting direction 521 of the camera 52 is toward the second chamber 323, and a first angle is formed between the shooting direction 521 of the camera 52 and the horizontal direction.

[0058] Specifically, the battery 51 provides power for the camera 52. The circuit board 53 includes a control circuit for activating the camera 52 to read the counter dial data upon receiving an electrical signal. The camera 52 is mounted on the support assembly 6 at an angle. Furthermore, the camera 52's shooting direction 521 forms a first angle with the horizontal, oriented toward the second chamber 323. The angled camera 52 allows the camera 52 to be positioned above the edge of the second chamber 323. This allows the camera 52's shooting direction 521 to substantially cover the counter dial while preventing the camera 52 from interfering with the intelligent meter reader's line of sight. The camera 52, positioned at the edge of the second chamber 323, can capture the counter dial. In this embodiment, the intelligent meter reader can be mounted above the second chamber 323, such as on top of the sealing structure 3.

[0059] In order to improve the convenience of assembling the camera 52. Preferably, Figure 7 As shown, the support assembly 6 includes a first limiting seat 61 and a second limiting seat 62. The first limiting seat 61 and the second limiting seat 62 are both mounted on the top wall of the sealing structure 3, and the first limiting seat 61 and the second limiting seat 62 are arranged opposite each other. The two sides of the camera 52 are respectively mounted on the first limiting seat 61 and the second limiting seat 62, and abut against the inner walls of the first limiting seat 61 and the second limiting seat 62. Specifically, the first limiting seat 61 and the second limiting seat 62 are arranged on the top wall of the sealing structure 3, clamping the camera 52 between the first limiting seat 61 and the second limiting seat 62. The two sides of the camera 52 abut against the inner walls of the first limiting seat 61 and the second limiting seat 62, so that the camera 52 is mounted above the second chamber 323 and the stability of the camera 52 on the support assembly 6 is improved. During installation, the camera 52 can enter from the ends of the first limit seat 61 and the second limit seat 62 and slide between the first limit seat 61 and the second limit seat 62 to facilitate assembly of the camera 52 and the support assembly 6.

[0060] In order to further improve the stability of the camera 52 on the support assembly 6. Preferably, Figure 7 and Figure 8As shown, the support assembly 6 also has a limit block 63, the first limit seat 61 has a first limit groove 611, the second limit seat 62 has a second limit groove 621, and a mounting position 64 is formed between the first limit seat 61 and the second limit seat 62. The camera 52 is set in the mounting position 64, and the two sides of the camera 52 slide with the first limit groove 611 and the second limit groove 621, and the front end of the camera 52 is against the limit block 63; the first limit groove 611 and the second limit groove 621 are both inclined, and a second angle is formed between the first limit groove 611 and the second limit groove 621 and the horizontal direction. Specifically, after the two sides of the camera 52 are slidably engaged with the first limiting groove 611 and the second limiting groove 621, the front end of the camera 52 abuts against the limiting block 63. The limiting block 63 can limit the position of the camera 52, making the installation of the camera 52 more precise. The first limiting groove 611 and the second limiting groove 621 can improve the stability of the camera 52 on the installation position 64. Moreover, the setting of the second angle determines the inclination angle of the first limiting groove 611 and the second limiting groove 621. When the camera 52 is on the installation position 64, the first limiting groove 611 and the second limiting groove 621 will determine the tilt direction of the camera 52. This installation method avoids the use of screws for fixing, while improving the stability of the camera 52, and allowing for quick assembly of the water meter 100.

[0061] In order to improve the stability of the circuit board 53 in the first chamber 322. In some embodiments, as Figure 7 As shown, the support assembly 6 further includes two third retaining seats 65, which are mounted on the top wall of the sealing structure 3 and disposed within the first chamber 322. The two third retaining seats 65 are positioned opposite each other. The third retaining seats 65 have third retaining grooves, and the two sides of the circuit board 53 engage with the third retaining grooves of the two third retaining seats 65, respectively. Specifically, the two ends of the circuit board 53 can be retained in the two third retaining grooves. When the sealing structure 3 is assembled with the main housing 1, the circuit board 53 is located in the first chamber 322, thereby improving the stability of the circuit board 53 within the first chamber 322.

[0062] In order to facilitate the assembly of the water meter 100. Preferably, Figure 1 、 Figure 2 、 Figure 11As shown, the water meter 100 also includes a main housing 1 and an upper cover 2. The base 33 includes a first connecting portion 334 and a second connecting portion 335. The second connecting portion 335 is mounted on the first connecting portion 334, and the outer diameter of the second connecting portion 335 is smaller than the outer diameter of the first connecting portion 334. The first connecting portion 334 is provided on the main housing 1. The first end of the upper cover 2 is sleeved on the outside of the main housing 1, and the inner wall of the upper cover 2 is threadedly engaged with the outer wall of the main housing 1. The second end of the upper cover 2 abuts against the first connecting portion 334, and the first connecting portion 334 is provided between the second end of the upper cover 2 and the top of the main housing 1. Specifically, the mounting cavity 13 of the main housing 1 is used to place the impeller assembly, which is used to cooperate with the counting dial. When water flows between the first interface 11 and the second interface 12 of the main housing 1, the water flow drives the impeller assembly to rotate, thereby driving the data of the counting dial to change. During assembly, the upper cover 2 is sleeved over the base 33, so that the second end of the upper cover 2 abuts against the first connecting portion 334. The second end of the upper cover 2 has a stopper. When the upper cover 2 and the main housing 1 are threadedly connected, the stopper of the upper cover 2 secures the first connecting portion 334 to the main housing 1. During installation, it is only necessary to abut the stopper against the first connecting portion 334, and then thread the upper cover 2 into the main housing 1. This improves the convenience of assembling the sealing structure 3 and the main housing 1.

[0063] In this embodiment, if Figure 2 As shown, the upper cover 2 and the main shell 1 are threadedly connected to achieve sealing between the upper cover 2 and the main shell 1, and the first connecting portion 334 can be opened to allow the counting dial to be set in the second chamber 323. The impeller assembly cooperates with the counting dial through the through-portion, and the through-portion can be provided with a sealing ring to keep the first chamber 322 in a sealed state.

[0064] Preferably, Figure 1 and Figure 2 As shown, the water meter 100 further includes a movable cover 4 and a pin 41. The pin 41 is mounted on the housing 31 of the sealing structure 3. The movable cover 4 is rotatably mounted on the pin 41 and has a rotation path centered on the pin 41. The housing 31 is at least partially made of a transparent material, and the movable cover 4 is disposed above the transparent portion of the housing 31. Specifically, the portion of the housing 31 above the counter dial is made of a transparent material. The movable cover 4 is disposed above the housing 31 to protect the housing 31. This prevents damage to the housing 31 from the external environment, prevents a reduction in the transparency of the housing 31, and improves the accuracy of data read by the intelligent meter reader.

[0065] When quoting drawing descriptions, new features that appear are described; in order to avoid repeated quoting of drawings which would result in a less concise description, features that have been described clearly will not be quoted from the drawings one by one.

[0066] The purpose of the above embodiments is to exemplify and deduce the technical solution of the utility model, and to fully describe the technical solution, purpose and effect of the utility model. Its purpose is to enable the public to have a more thorough and comprehensive understanding of the disclosed content of the utility model, and it does not limit the scope of protection of the utility model.

[0067] The above embodiments are not exhaustive of the present invention, and there may be many other embodiments not listed. Any replacements and improvements made without violating the concept of the present invention are within the scope of protection of the present invention.

Claims

1. Sealing structure, characterized in that, include: The housing, the support seat, the base and the pins, wherein the support seat is sleeved on the outside of the base and is sealed with the base; The shell is sleeved on the outside of the support base and is sealed with the support base; the shell and the support base are movably matched; a sealed first chamber is formed between the support base and the shell, and a sealed second chamber is formed between the base and the shell; The shell has a first pin hole, the support seat has a second pin hole corresponding to the first pin hole, the first end of the pin is arranged in the first pin hole, and the second end of the pin is arranged in the second pin hole, wherein the outer diameter of the pin is smaller than the inner diameter of the first pin hole.

2. The sealing structure according to claim 1, wherein: The first pin hole passes through from one side of the shell to the other side of the shell, the inner diameter of the first pin hole is larger than the inner diameter of the second pin hole, and the second end of the pin is interference fit with the second pin hole.

3. The sealing structure according to claim 1, wherein: The sealing structure also has a first sealing ring, and the outer wall of the base has a first groove, which extends along the circumference of the base. The first sealing ring is at least partially installed in the first groove, and the outer wall of the first sealing ring is respectively against the outer wall of the base and the inner wall of the support seat.

4. The sealing structure according to claim 3, wherein: The sealing structure also has a second sealing ring, the outer wall of the support seat has a second groove, the second groove extends along the circumference of the support seat, the second sealing ring is at least partially installed in the second groove, and the outer wall of the second sealing ring is respectively against the outer wall of the support seat and the inner wall of the outer shell.

5. The sealing structure according to claim 4, wherein: There are multiple first grooves and multiple second grooves respectively. The number of the first sealing rings corresponds to the number of the first grooves, and the number of the second sealing rings corresponds to the number of the second grooves.

6. The sealing structure according to claim 1, wherein: The top of the base is provided with a positioning block, and the inner wall of the support seat is provided with a positioning groove matched with the positioning block; The support seat has a first mounting hole, the base has a second mounting hole corresponding to the first mounting hole, and the sealing structure also has a fastener. The first mounting hole and the second mounting hole are both used for the fastener to pass through, so that the support seat is fixed to the base through the fastener.

7. A water meter, characterized in that The sealing structure comprises a main housing, an upper cover, and the sealing structure according to any one of claims 1 to 6, wherein the base of the sealing structure comprises a first connecting portion and a second connecting portion, the second connecting portion being mounted on the first connecting portion, and the outer diameter of the second connecting portion being smaller than the outer diameter of the first connecting portion; The first connecting portion is arranged on the main shell, the first end of the upper cover is sleeved on the outside of the main shell, and the inner wall of the upper cover is threadedly engaged with the outer wall of the main shell; the second end of the upper cover is against the first connecting portion, and the first connecting portion is arranged between the second end of the upper cover and the top of the main shell.

8. The water meter according to claim 7, wherein: The water meter also includes a counting dial and a monitoring component. The monitoring component is at least partially arranged in the first chamber of the sealing structure, the counting dial is arranged in the second chamber of the sealing structure, and the monitoring direction of the monitoring component is toward the counting dial.

9. The water meter according to claim 8, wherein: The monitoring assembly includes a battery, a camera, and a circuit board. The battery and the circuit board are installed in the first chamber. The camera is installed on the top wall of the housing and is located above the first chamber. The camera is electrically connected to the circuit board, and the circuit board is electrically connected to the battery.

10. The water meter according to claim 7, wherein: The water meter also includes a movable cover and a pin shaft. The pin shaft is installed on the outer shell of the sealing structure. The movable cover is rotatably installed on the pin shaft, and the movable cover has a rotation path centered on the pin shaft. The outer shell is at least partially made of transparent material, and the movable cover is arranged above the transparent part of the outer shell.

Images