CN217877860U

CN217877860U - Water meter

Info

Publication number: CN217877860U
Application number: CN202222175702.6U
Authority: CN
Inventors: 张新忠; 程文力; 李磊; 林荣; 王林军
Original assignee: Wenling Younio Water Meter Co ltd
Current assignee: Wenling Younio Water Meter Co ltd
Priority date: 2022-08-17
Filing date: 2022-08-17
Publication date: 2022-11-22
Anticipated expiration: 2032-08-17

Abstract

The utility model provides a water meter belongs to water gauge technical field. The problem of how to guarantee sealed effect when making casing inner structure compact is solved to it. This water gauge includes casing and impeller lid, rubber seal sets up leaning on the step in the casing, the downside edge of impeller lid can support tight rubber seal, utilize the radial deformation of spacing step restriction rubber seal on the impeller lid, just can compress tightly rubber seal through these two part cooperations of impeller lid and casing, omit the table lid, sealed pad part, make overall structure go up arrange compactly, only need during the equipment to screw up this part of impeller lid and just can support tight rubber seal and lean on to lean on the step, realize convenient equipment.

Description

Water meter

Technical Field

The utility model belongs to the technical field of the water gauge, a water gauge is related to.

Background

The water meter is a meter for measuring water flow, most of the existing water meter measuring modes adopt impellers for measuring, the water meter is usually arranged on a water pipe, and when a user discharges water, a pointer or a character wheel on the meter rotates to indicate the passing water quantity. The water flow in the shell impacts the water wheel blade of the machine core to generate torque, so that the impeller rotates, the larger the faucet is opened, the more rapid the water flow is, the faster the impeller rotates, and the water wheel drives the gear to rotate, so that the pointer or the character wheel displays the passing water flow. Such as chinese patent application No.: in the water meter disclosed in CN201120215300.3], a partition plate is arranged in a housing, a seal indication mechanism is arranged above the partition plate, an impeller is arranged below the partition plate and is rotatably arranged on the partition plate, the seal indication mechanism is composed of a gear assembly and a character wheel, and because the impeller is directly impacted by water flow and the gear assembly rusts after contacting water, the seal effect between the partition plate and the housing is very important.

In this regard, as in chinese patent application No.: CN201720496911, the impeller cover is located in the shell, the sealing ring is sleeved outside the impeller cover, the sealing gasket is arranged above the impeller cover, the meter cover is screwed in the shell, and the sealing gasket, the sealing ring and the impeller cover are sequentially extruded by utilizing the downward movement of the meter cover, so that the sealing effect is ensured.

But the meter cover is utilized to sequentially compress the sealing gasket, the sealing ring and the impeller cover, so that the space in the shell is occupied, the space in the shell for water flow to pass through is compressed, the positions of the meter cover, the sealing gasket, the sealing ring and the impeller cover need to be observed during assembly, and the assembly is more laborious.

Disclosure of Invention

The utility model aims at having the above-mentioned problem to current technique, provided a water gauge, the utility model aims to solve the technical problem that: how to ensure the sealing effect while making the internal structure of the shell compact.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a water meter, includes inside cavity and has open-ended casing and be used for installing the impeller and be located the impeller lid of casing, its characterized in that, shells inner wall goes up the protrusion and is provided with and is annular to support and lean on the step, the upside that supports and lean on the step is provided with rubber seal, the opening is worn out to the upside of impeller lid, have on the outer wall of impeller lid can with shells inner wall spiro union's external screw thread tooth, the downside edge of impeller lid can support rubber seal tightly to support to lean on the step, the downside protrusion of impeller lid is provided with spacing step, spacing step is located to support to lean on in the step and can restrict rubber seal radial deformation.

The rubber sealing ring can be compressed through the matching of the two parts of the impeller cover and the shell, a surface cover and a sealing gasket part are omitted, the overall structure is compact in arrangement, the rubber sealing ring can be abutted against the step only by screwing one part of the impeller cover during assembly, convenient assembly is realized, meanwhile, the limit step is used for limiting and restraining the deformation of the rubber sealing ring in the radial direction, the acting force received by the impeller cover in the screwing process with the shell can be transmitted to the lower side edge of the impeller cover through the outer wall of the impeller cover and extrudes the rubber sealing ring, the stress point on the rubber sealing ring is close to the lower side edge of the impeller cover, the deformation of the rubber sealing ring can be abutted against the limit step on the impeller cover by utilizing the characteristic, the elastic force of the rubber sealing ring in the axial direction and the radial direction is reacted on one part of the impeller cover after the rubber sealing ring is pressed and deformed, the peripheral side and the lower side of the impeller cover can be restrained by the elastic force of the rubber sealing ring, the sealing effect of the rubber sealing ring at the position is ensured, and the rubber sealing ring is tensioned between the impeller cover and the shell after the rubber sealing ring is deformed, the impeller cover is restrained from moving relative to the shell, and the abrasion of the water hammer effect caused by the water hammer effect of the impeller cover is reduced.

In foretell water gauge, the outer wall of spacing step pastes with the inner wall that leans on the step and leans on, the impeller cover is still including the connecting portion that are the tube-shape, the external thread tooth is seted up on the lateral wall of connecting portion, have the below that is located the external thread tooth on the lateral wall of connecting portion and can paste the spigot surface that leans on with shells inner wall. When the impeller cover spiro union, spacing step and spigot surface homoenergetic lead the impeller cover, and two direction cooperations keep the axiality of internal thread tooth on external thread tooth and the casing, and the spigot surface leads at rubber seal's upside in addition, and spacing step then leads at rubber seal's lateral part, cooperates restriction rubber seal position jointly, makes rubber seal can stabilize the compression deformation, realizes sealedly.

In the above water meter, the height of the limit step in the axial direction is greater than half of the height of the abutting step in the axial direction, and the lower end surface of the limit step is located in the abutting step. The limit step and the transmission effect that can increase the impact force when the water hammer effect produces after leaning on the area of contact increase of step slow down the wearing and tearing of external thread tooth, and the lower terminal surface of limit step is located to lean on in the step to make the lower terminal surface of limit step and the lower terminal surface that leans on the step form the ladder from inside to outside along radial, both can increase the liquid circulation in the casing, can reduce rivers again to leaning on the striking degree of ladder.

In the above water meter, the upper side surface of the abutting step is an annular plane. This technical scheme adopts spacing step to rubber seal's spacing for rubber seal can set up and have a complete annular plane to supply rubber seal to lean on by making to lean on the side of going up of step, guarantees rubber seal's pressurized deformation volume.

In foretell water gauge, the impeller lid is still including the mounting panel that is located connecting portion, spacing step is located the downside of mounting panel and is cyclic annular, the downside of mounting panel has from the face of stepping down of spacing step to connecting portion axle center slope gradually. The downside that sets up of the face of stepping down made the mounting panel arches, can increase the resistance to compression effect of mounting panel, and the face of stepping down of arching can be earlier by rivers impact, reduces the sputtering height of rivers, reduces the frequency that rivers strikeed spacing step, and the face of stepping down can increase the volume in the casing simultaneously, increase liquid circulation.

In foretell water gauge, have the downward bulge on the downside of mounting panel and be used for the installation cover of installation impeller, be provided with the strengthening rib between installation cover and the face of stepping down. The structural strength between the mounting sleeve and the abdicating surface is improved by adding the reinforcing ribs, so that the impeller cover resists water flow impact and the stability of the impeller cover in use is ensured.

Compared with the prior art, this water gauge has following advantage:

1. the water meter can clamp the rubber sealing ring by matching the impeller cover and the shell, and has simple and compact structure and convenient assembly.

2. This water gauge makes rubber seal's one side deformation extrusion spacing step through adjustment rubber seal by the extrusion position, reaches the control to rubber seal compression and tensile ratio to make the rubber seal tensioning at spacing step, support and lean on between step, impeller cover and the casing, guarantee sealed effect.

3. The limiting step can also block the impact of water flow on the rubber sealing ring, and reduce the deformation of the rubber sealing ring under a high-pressure medium, so that the current sealing effect of the rubber sealing ring is prolonged.

4. The acting force that impeller lid received with casing spiro union in-process can pass through impeller lid outer wall and transmit its downside edge and extrude rubber seal, and the extrusion acting force that receives on the rubber seal near impeller lid downside edge is bigger, and the reaction force of this department of rubber seal is bigger, more can guarantee between impeller lid and the casing the support of spiro union position tightly.

5. The impeller cover is directly screwed with the shell and then extruded on the rubber sealing ring, so that the assembly is convenient, and the structure of the whole water meter is more compact in the axial direction.

Drawings

Figure 1 is a cross-sectional view of a water meter.

Fig. 2 is an enlarged view of fig. 1 at a.

Fig. 3 is a perspective view of the impeller cover.

Fig. 4 is a cross-sectional view of the impeller cover.

Fig. 5 is an exploded view of the present water meter.

In the figure, 1, a housing; 1a, abutting against the step; 1b, internal thread teeth; 1c, opening; 2. an impeller cover; 2a, a limiting step; 2b, a connecting part; 2b1, external thread teeth; 2b2, a guide surface; 2c, mounting a plate; 2c1, a abdication surface; 2c2, mounting sleeves; 3. a rubber seal ring; 4. and (7) reinforcing ribs.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 5, the water meter includes a housing 1 having a hollow interior and an opening 1c, and an impeller cover 2 for installing an impeller and located in the housing 1, as shown in fig. 3 and 4, an upper side of the impeller cover 2 penetrates through the opening 1c, the impeller cover 2 includes a cylindrical connecting portion 2b and a mounting plate 2c located in the connecting portion 2b, a mounting sleeve 2c2 for installing the impeller is located in the middle of a lower side surface of the mounting plate 2c, a protruding annular step 2a is located on a lower side surface of the mounting plate 2c, the mounting sleeve 2c2 is located in the step 2a, the lower side surface of the mounting plate 2c has a step surface 2c1 located between the step 2a and the mounting sleeve 2c2, the step surface 2c1 gradually inclines downward from the step 2a to an axis of the mounting sleeve 2c2, a reinforcing rib 4 is disposed between the mounting sleeve 2c1 and the step surface 2c1, and as shown in fig. 1 and 2, a protruding annular step is located on an inner wall of the housing 1, the upper side of the abutting step 1a is provided with a rubber sealing ring 3, the outer side wall of the connecting part 2b is provided with an external thread tooth 2b1, the outer side wall of the connecting part 2b is provided with a guide surface 2b2 positioned below the external thread tooth 2b1, the inner wall of the shell 1 is provided with an internal thread tooth 1b screwed with the external thread tooth 2b1, the internal thread tooth 1b is positioned above the abutting step 1a, after the connecting part 2b is screwed with the shell 1, the guide surface 2b2 is attached with the inner wall of the shell 1 for guiding, the outer wall of the limiting step 2a is attached with the inner wall of the abutting step 1a to realize two guiding, the height of the limiting step 2a in the axial direction is larger than one half of the height of the abutting step 1a in the axial direction, the lower end surface of the limiting step 2a is positioned in the abutting step 1a and is an annular plane abutting against the upper side surface of the step 1a, the lower side edge of the impeller cover 2 can abut the rubber sealing ring 3 on the abutting step 1a tightly, when selecting for use rubber seal 3, the width of 3 cross sections of rubber seal is greater than or equal to the width between 2a outer lanes of spacing step and the impeller cover 2 lateral wall to this realizes that rubber seal 3 is extruded deformation, and 3 radial deformations of rubber seal can be restricted to spacing step 2a, reaches the effect that rubber seal 3 and spacing step 2a pasted tightly.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although terms such as housing, impeller cover, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any one of the additional limitations of the present invention.

Claims

1. The utility model provides a water meter, includes inside cavity and has casing (1) of opening (1 c) and impeller lid (2) that are used for installing the impeller and lie in casing (1), its characterized in that, the protrusion is provided with on casing (1) inner wall and is cyclic annular to lean on step (1 a), the upside that leans on step (1 a) is provided with rubber seal (3), opening (1 c) is worn out to the upside of impeller lid (2), have on the outer wall of impeller lid (2) can with casing (1) inner wall spiro union's external screw thread tooth (2 b 1), the downside edge of impeller lid (2) can support rubber seal (3) tightly on leaning on step (1 a), the downside protrusion of impeller lid (2) is provided with and is cyclic annular spacing step (2 a), spacing step (2 a) are located and lean on step (1 a) and can restrict rubber seal (3) radial deformation.

2. A water meter according to claim 1, wherein the outer wall of the limit step (2 a) abuts against the inner wall of the step (1 a), the impeller cover (2) further comprises a cylindrical connecting portion (2 b), the external thread teeth (2 b 1) are provided on the outer side wall of the connecting portion (2 b), and the outer side wall of the connecting portion (2 b) is provided with a guide surface (2 b 2) which is located below the external thread teeth (2 b 1) and can abut against the inner wall of the housing (1).

3. A water meter according to claim 2, wherein the height of the limit step (2 a) in the axial direction is greater than half the height of the abutment step (1 a) in the axial direction, and the lower end surface of the limit step (2 a) is located inside the abutment step (1 a).

4. A water meter according to claim 1, 2 or 3, characterised in that the upper side of the abutment step (1 a) is an annular flat surface.

5. A water meter according to claim 2 or 3, wherein the impeller cover (2) further comprises a mounting plate (2 c) located in the connecting portion (2 b), the limiting step (2 a) is located on the lower side of the mounting plate (2 c) and is annular, and the lower side of the mounting plate (2 c) has a relief surface (2 c 1) which gradually inclines downward from the limiting step (2 a) to the axis of the connecting portion (2 b).

6. A water meter as claimed in claim 5, wherein the mounting plate (2 c) has a downwardly projecting mounting sleeve (2 c 2) on its underside for mounting the impeller, and a rib (4) is provided between the mounting sleeve (2 c 2) and the relief surface (2c 1).