A base meter component of a rising direct-reading water meter

Abstract

The utility model discloses a base meter component of a rising direct-reading water meter, comprising: a meter case with a finely machined inner wall, a partition plate arranged inside the meter case, a shielding ring connected to the top of the partition plate, an impeller box component connected to the bottom of the partition plate, a plurality of O-ring trapezoidal grooves arranged between the edge of the partition plate and the finely machined inner wall; a flange pressure plate fixedly connected to the top of the partition plate, and a fixing seat fixedly connected to the flange pressure plate; the water meter pressure-bearing parts are connected by flanges, which is convenient for automated transformation, modular production and maintenance; the trapezoidal shape of the partition O-ring groove and the blunt sharp edge design are conducive to the installation of the O-ring and are not convenient for it to be removed when under pressure; when the flange threaded hole is damaged, the fastening function can be continued to be realized by expanding the hole, extending the screw, and adding a nut, thereby reducing the scrap rate of the meter case due to thread damage; the base meter flange screws are located inside, which can ensure the unprotected disassembly of the water meter.

Description

Technical Field

[0001] The utility model relates to the technical field of a base meter component structure, in particular to a base meter component of a rising direct-reading water meter. Background Art

[0002] The traditional small-diameter rotary vane water meters currently on the market have their movement sealed in the case by fastening the metal middle cover to the large thread of the water meter case. This method not only requires a special tightening device, but also usually requires manual pre-tightening, which is time-consuming and labor-intensive, and is not conducive to the automation transformation of the entire production line. The large thread connection method places higher requirements on thread processing. Slight differences often cause water meter seal leakage due to insufficient tightening; and the tightening of the thread makes the angular position of the metal middle cover uncontrollable. When angular positioning is required, such as non-magnetic sampling, optoelectronic communication line output, etc., additional components or structures must be added, which increases the complexity, cost and quality risks of the product.

[0003] For example, a "split water meter" disclosed in a Chinese patent document, with publication number: CN108303153B, discloses a base meter, a steel cover, a split case, a fixing device, a case flip, a connecting assembly, a PCB circuit board and a waterproof battery pack. The split case includes a lower shell and an upper shell. The PCB circuit board is installed in the circuit compartment. The waterproof battery pack is installed in the battery compartment. The waterproof battery pack is electrically connected to the PCB circuit board. The PCB circuit board is an integrated PCB circuit board. The fixing device includes a bolt assembly and a gear ring assembly. The bolt assembly includes a bolt and a screw block. A step hole is provided on the lower shell. The bolt is threadedly connected to the screw block. The upper end face of the screw block bears against the lower end face of the steel cover. The gear ring assembly includes an inner gear ring and an outer gear ring. However, this solution also has a sealing problem. Summary of the invention

[0004] In order to solve the problem of inconvenient installation and poor sealing of base meter components in the prior art, the utility model provides a base meter component of a rising direct-reading water meter, which is connected to the water meter pressure-bearing part through a flange, is easy to install and has good sealing.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A base meter assembly of a rising direct-reading water meter comprises: a meter case with a finely machined inner wall, a partition plate arranged inside the meter case, a shielding ring connected to the top of the partition plate, an impeller box assembly connected to the bottom of the partition plate, and a plurality of O-ring trapezoidal grooves arranged between the edge of the partition plate and the finely machined inner wall; a flange pressure ring is fixedly connected to the top of the partition plate, and a fixing seat is fixedly connected to the flange pressure ring. The fixing seat and the meter case are connected by the flange pressure ring. The water meter pressure-bearing parts are connected by flanges, which is convenient for installation, good sealing, and convenient for automated transformation, modular production and maintenance.

[0007] Preferably, an O-ring is arranged in the O-ring trapezoidal groove, and the edge of the partition is provided with a chamfered angle. The trapezoidal shape of the partition O-ring groove and the chamfered sharp edge design facilitate the insertion of the O-ring and prevent it from coming out when under pressure.

[0008] Preferably, the impeller box assembly comprises an impeller box, wherein the impeller box is provided with an impeller and a filter screen connected in sequence, so as to realize the basic meter function.

[0009] Preferably, the partition is provided with a shielding ring installation groove, the shielding ring is installed in the shielding ring installation groove, and the shielding ring installation groove includes a plurality of shielding ring installation grooves to achieve a shielding function.

[0010] Preferably, a center positioning blind hole is provided at the top of the center of the partition, and a limit blind hole is provided at the bottom of the center of the partition. The counter assembly is placed through the center positioning blind hole, and the impeller tip is prevented from rotating through the limit blind hole.

[0011] Preferably, the partition is provided with a plurality of reinforcing ribs, and the reinforcing ribs are located between the shielding ring installation groove and the edge of the partition to ensure structural strength.

[0012] Preferably, the partition is provided with a shrinkage hole, and the shrinkage hole is located between the shielding ring installation groove and the central positioning blind hole, so as to reduce the deformation of the part size.

[0013] Preferably, the flange clamp is provided with a clamp screw through hole and a fixing seat screw hole, and the clamp screw through hole and the fixing seat screw through hole are respectively provided with flange screws connected to the watch case and the fixing seat. When the flange threaded hole is damaged, the fastening function can be continued by expanding the hole, extending the screw, and adding a nut, thereby reducing the scrap rate of the watch case caused by thread damage.

[0014] The utility model has the following advantages:

[0015] (1) The water meter pressure-bearing parts are connected by flanges, which is convenient for automation transformation, modular production and maintenance. The trapezoidal design of the partition O-ring groove and the blunted sharp edges are conducive to the installation of the O-ring and are not easy to remove when under pressure. When the flange threaded hole is damaged, the tightening function can be continued by expanding the hole, extending the screw, and adding a nut, thereby reducing the scrap rate of the meter case due to thread damage; (2) The base meter flange screws are located inside, which can ensure that the water meter is disassembled without protection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The drawings described below are merely exemplary. A person skilled in the art can derive other implementation drawings based on the provided drawings without inventive effort.

[0017] Figure 1It is a schematic diagram of the overall structure in the embodiment.

[0018] Figure 2 Schematic diagram of the axonometric structure of the watch case in the embodiment.

[0019] Figure 3 Schematic diagram of the cross-sectional structure of the partition in the embodiment.

[0020] Figure 4 Schematic diagram of the axonometric structure of the flange pressure ring in the embodiment.

[0021] Figure 5 2 is a schematic diagram of the cross-sectional structure of the fixing seat in the embodiment.

[0022] In the figure:

[0023] Case 1-1, flange threaded hole 1-1-1, finely machined inner wall 1-1-2, movement step 1-1-3, sealing rib hole 1-1-4, impeller box assembly 1-2, impeller box 1-2-1, impeller 1-2-2, filter 1-2-3, partition 1-3, O-ring trapezoidal groove 1-3-1, ring 1-3-2, damping rib 1-3-3, positioning boss 1-3-4, limit blind hole 1-3-5, center positioning blind hole 1-3-6, shielding ring mounting groove 1-3-7, plus Reinforcing rib 1-3-8, shrinkage hole 1-3-9, partition O-ring 1-4, shielding ring 1-5, flange pressure ring 1-6, pressure ring screw through hole 1-6-1, fixing seat screw hole 1-6-2, communication line avoidance groove 1-6-3, fixing seat 1-7, fixing seat screw through hole 1-7-1, circumferential fixing guide groove 1-7-2, communication line avoidance port 1-7-3, communication line card slot 1-7-4, lead seal insert card slot 1-7-5, limit notch 1-7-6, flange screw 1-8. DETAILED DESCRIPTION

[0024] Based on the embodiments of the present utility model, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present utility model.

[0025] like Figure 1-5 As shown, the present scheme discloses a watch case 1-1, wherein the top of the watch case 1-1 is provided with a plurality of flange threaded holes 1-1-1 arranged in an array. The plurality of flange threaded holes 1-1-1 include four. The watch case 1-1 is provided with a cavity penetrating the top and the bottom of the watch case 1-1. The watch case 1-1 is provided with a finely finished inner wall 1-1-2, and the finely finished inner wall 1-1-2 is located at the top upper part of the watch case 1-1. The watch case 1-1 is provided with a movement step 1-1-3, and the movement step 1-1-3 is located below the finely finished inner wall 1-1-2. The outer side of the watch case 1-1 is provided with a sealing rib hole 1-1-4.

[0026] In other embodiments, the cavity is a cylindrical cavity, and different protrusions extending inward are arranged at different heights in the cavity.

[0027] In other embodiments, a partition 1-3 is included, and the partition 1-3 is a disc-shaped structural member. An O-ring trapezoidal groove 1-3-1 is provided on the outer edge of the partition, and the O-ring trapezoidal groove 1-3-1 includes a plurality of O-ring trapezoidal grooves arranged in parallel. The O-ring trapezoidal groove 1-3-1 includes two O-ring trapezoidal grooves arranged in parallel. The radial cross-section of the O-ring trapezoidal groove 1-3-1 is a trapezoid, the upper base of the trapezoid faces the central axis of the partition, the lower base of the trapezoid faces the edge of the partition, and the length of the upper base is less than the length of the lower base. The O-ring trapezoidal groove 1-3-1 contains an O-ring.

[0028] The bottom end face of the partition is provided with a circular ring 1-3-2, and the circular ring 1-3-2 is fixedly arranged on the bottom end face of the partition; the diameter of the circular ring 1-3-2 is smaller than the diameter of the partition, and the circular ring 1-3-2 protrudes downward. The bottom end face of the partition is provided with an annular damping rib 1-3-3, and the diameter of the damping rib 1-3-3 is smaller than the diameter of the circular ring 1-3-2. A positioning boss 1-3-4 is provided between the outer side of the circular ring 1-3-2 and the bottom end face of the partition to achieve positioning. A lower circular hole of the partition is provided at the center of the bottom end face of the partition, and the edge of the lower circular hole of the partition is connected to the damping rib 1-3-3. A limiting blind hole 1-3-5 is provided in the lower circular hole of the partition, and the limiting blind hole 1-3-5 is located at the center of the lower circular hole of the partition, and the opening of the limiting blind hole 1-3-5 faces downward. The bottom surface of the limiting blind hole 1-3-5 is the same as the bottom surface of the circular hole under the partition, and the side wall of the limiting blind hole 1-3-5 extends downward from the bottom surface of the circular hole under the partition.

[0029] A center positioning blind hole 1-3-6 is provided at the center of the upper end face of the partition, the diameter of the center positioning blind hole 1-3-6 is larger than the diameter of the limiting blind hole 1-3-5, and the diameter of the center limiting blind hole 1-3-5 is larger than the diameter of the circular hole below the partition. A shielding ring installation groove 1-3-7 is provided at the upper end face of the partition, the shielding ring installation groove 1-3-7 is located outside the center positioning blind hole 1-3-6, and the diameter of the shielding ring installation groove 1-3-7 is larger than the diameter of the center positioning blind hole 1-3-6. A reinforcing rib 1-3-8 is provided at the upper end face of the partition, the reinforcing rib 1-3-8 is arranged in an array on the upper end face of the partition, and the reinforcing rib 1-3-8 is fixedly connected to the upper end face of the partition. The reinforcing rib 1-3-8 is arranged in an array around the center point of the partition, and the extension direction of the reinforcing rib 1-3-8 is along the radial direction of the partition, extending from the edge of the partition toward the center of the partition. The reinforcing ribs 1-3-8 are arranged in a circular array on the upper end surface of the partition, and the diameter of the circular array is greater than the diameter of the center positioning blind hole 1-3-6. The top surface of the side wall of the center positioning blind hole 1-3-6 is provided with a shrinkage hole 1-3-9. The shrinkage hole 1-3-9 includes a plurality of shrinkage holes arranged in an array, and the shrinkage holes 1-3-9 are arranged in a circular array on the upper end surface of the side wall of the center positioning blind hole 1-3-6.

[0030] The cross-sectional shape of the shrinkage holes 1-3-9 is waist-shaped. Small circular holes arranged in the same array are arranged between the shrinkage holes 1-3-9, and the diameter of the small circular holes is the same as the width of the shrinkage holes 1-3-9.

[0031] In other embodiments, the upper end face of the partition is provided with an annular groove extending downward, and a reinforcing rib 1-3-8 is arranged at the outer side wall of the annular groove. The height of the reinforcing rib 1-3-8 is the same as the height of the annular groove. The annular groove is provided with an inner groove wall and an outer groove wall in sequence along the axis outward. The reinforcing rib 1-3-8 is fixedly connected to the outer groove wall, and the reinforcing rib 1-3-8 extends from the outer groove wall to the inner groove wall. A semicircular arc-shaped structure is provided at the end of the reinforcing rib 1-3-8 toward the inner groove wall, and the arc-shaped structure extends from the top of the reinforcing rib 1-3-8 to the bottom of the reinforcing rib 1-3-8, and the arc-shaped structure is connected to the bottom end face of the annular groove. A fillet is provided between the bottom of the reinforcing rib 1-3-8 and the bottom end face of the annular groove.

[0032] The bottom end surface of the annular groove is provided with a shielding ring mounting groove 1-3-7, and the shielding ring mounting groove 1-3-7 is located on the outer side of the side wall of the center positioning blind hole 1-3-6. The outer side end surface of the side wall of the center positioning blind hole 1-3-6 is used as the inner side wall end surface of the shielding ring mounting groove 1-3-7. The shielding ring mounting groove 1-3-7 extends to the bottom end surface of the annular groove, so that the bottom end surface of the shielding ring mounting groove 1-3-7 is deeper than the bottom end surface of the annular groove. The bottom end surface of the annular groove is provided with a shielding ring mounting protrusion, and the shielding ring mounting protrusion is connected to the shielding ring mounting groove 1-3-7. The shielding ring mounting protrusion is sequentially provided with an inner end surface and an outer end surface along the axis to the edge direction, and the inner end surface of the shielding ring mounting protrusion is used as the outer side wall of the shielding ring mounting groove. That is, the inner end surface of the shielding ring mounting protrusion and the outer end surface of the side wall of the center positioning blind hole 1-3-6 together constitute the side wall of the shielding ring mounting groove 1-3-7.

[0033] The shielding ring 1-5 mounting protrusion is located between the shielding ring mounting groove 1-3-7 and the reinforcing rib 1-3-8. A shielding ring is installed in the shielding ring mounting groove 1-3-7, and the shielding ring is a cylindrical structural member. When the shielding ring is installed in the shielding ring mounting groove 1-3-7, the inner side surface of the shielding ring abuts against the outer side wall of the center positioning blind hole 1-3-6. And the top end height of the shielding ring is the same as the top end height of the center positioning blind hole 1-3-6.

[0034] The outer side of the protrusion of the shielding ring mounting piece is located on the bottom surface of the annular groove and is also provided with a second groove, and the second groove is arranged in an annular shape on the bottom surface of the annular groove. The second groove and the shielding ring mounting groove 1-3-7 are respectively located on the inner and outer sides of the shielding ring mounting protrusion. The depth of the second groove is the same as the depth of the shielding ring mounting groove 1-3-7. The shielding ring mounting groove 1-3-7 abuts against the end of the reinforcing rib 1-3-8. The width of the second groove is the same as the width of the shielding ring mounting groove 1-3-7. The outer side wall of the second groove abuts against the fillet at the bottom of the reinforcing rib 1-3-8. A second mounting ring abutting against the shielding ring is installed in the second groove.

[0035] In other embodiments, a flange pressure ring 1-6 is included, and the flange pressure ring 1-6 is a circular ring 1-3-2 shaped structural member. The outer edge of the flange pressure ring 1-6 is provided with a plurality of arc-shaped raised areas arranged in an array, and the arc-shaped raised areas are provided with pressure ring screw through holes 1-6-1, and the pressure ring screw through holes 1-6-1 penetrate the arc-shaped raised areas. The pressure ring screw through holes 1-6-1 are connected to the upper and lower end faces of the flange pressure ring 1-6. The pressure ring screw through holes 1-6-1 are symmetrical about the center of the flange pressure ring 1-6.

[0036] The center of the flange pressing ring 1-6 is a circular opening structure, and the inner edge of the flange pressing ring 1-6 is provided with a communication line avoidance groove 1-7-3, in which the communication line is accommodated, and the shape of the communication line avoidance groove 1-7-3 is an arc shape, and the opening direction of the communication line avoidance groove 1-7-3 is toward the center of the flange pressing ring 1-6. The communication line avoidance groove 1-7-3 extends along the radial direction of the flange pressing ring 1-6 toward the outside of the flange pressing ring 1-6.

[0037] The flange pressing ring 1-6 is also provided with a fixing seat screw hole 1-6-2. The cross-sectional shape of the fixing seat screw hole 1-6-2 is circular. The fixing seat screw hole 1-6-2 penetrates the flange pressing ring 1-6 and is connected to the two side end faces of the flange pressing ring 1-6. The fixing seat screw holes 1-6-2 are arranged in an array on the flange pressing ring 1-6. The fixing seat screw holes 1-6-2 are symmetrical about the center of the flange pressing ring 1-6. The fixing seat screw holes 1-6-2 are arranged corresponding to the pressing ring screw through holes 1-6-1. The fixing seat screw holes 1-6-2 are located on the line connecting the pressing ring screw through holes 1-6-1 and the center of the flange pressing ring 1-6. The diameter of the fixing seat screw holes 1-6-2 is smaller than the pressing ring screw through holes 1-6-1. The fixing seat machine screw holes are threadedly connected to the screws for installing the fixing seat. The pressing ring screw through holes 1-6-1 are threadedly connected to the screws for installing the flange pressing ring 1-6.

[0038] In other embodiments, the ring 1-3-2 is integrally formed with the partition plate, and the reinforcing rib 1-3-8 is integrally formed with the partition plate.

[0039] In other embodiments, the partition includes a high-strength plastic part without magnetic shielding performance, and the outer edge of the partition is provided with a blunt edge. The blunt edge is located at the top edge of the side of the partition. The partition is provided with a circular ring 1-3-2 structure that cooperates with the impeller box assembly 1-2, and the circular ring 1-3-2 structure includes a plurality of damping ribs 1-3-3, and the circular ring 1-3-2 structure is provided with a positioning boss 1-3-4 on the outside. The limiting blind hole 1-3-5 located at the bottom center of the partition prevents the impeller tip from rotating. The center positioning blind hole 1-3-6 located at the top center of the partition is installed with a counter assembly. The shrinkage hole 1-3-9 located at the center of the partition reduces the deformation of the part size. During assembly and use, the shrinkage hole 1-3-9 provides a shrinkage space for the side wall of the center positioning blind hole 1-3-6. The depth of the shrinkage hole 1-3-9 is greater than the depth of the center positioning blind hole 1-3-6, and the bottom end surface height of the shrinkage hole 1-3-9 is the same as the shielding ring mounting groove 1-3-7.

[0040] In other embodiments, the flange pressure ring 1-6 comprises a high-strength material, and the upper end surface of the flange pressure ring 1-6 is evenly distributed with pressure ring screw through holes 1-6-1 and fixing seat screw holes 1-6-2 in a circumferential manner. The flange pressure ring 1-6 is connected with a flange screw 1-8, and the flange screw 1-8 is threadedly connected to the pressure ring screw through hole 1-6-1.

[0041] In other embodiments, the second groove is used in conjunction with the magnetic shielding ring mounting groove 1-3-7, and a second mounting ring having the same function as the shielding ring is installed in the second groove.

[0042] In other embodiments, a fixing seat 1-7 is included, wherein a fixing seat cavity is provided inside the fixing seat 1-7, the fixing seat cavity opens upward, and a circular hole is provided on the bottom surface of the cavity. A fixing seat screw through hole is provided on the bottom surface of the fixing seat cavity, and the fixing seat screw through hole is arranged corresponding to the fixing seat screw hole 1-6-2. A circumferential fixing guide groove extending along the axial direction is provided on the side wall of the fixing seat cavity, and a widening opening is provided at the top end of the circumferential fixing guide groove. A communication line avoidance opening is provided at the bottom of the fixing seat cavity, and the communication line avoidance opening accommodates the communication line, and the communication line avoidance opening extends radially from the inside of the cavity to the outside of the fixing seat. The communication line avoidance opening is connected to a communication line card slot 1-7-4, and the communication line card slot 1-7-4 extends along the axial direction and connects the communication line avoidance opening and the upper end surface of the fixing seat.

[0043] The outer edge of the fixing seat is provided with a protrusion, the communication line avoidance extends outward through the protrusion, and the side end face of the protrusion is provided with a lead seal insert slot 1-7-5. The lead seal insert slot 1-7-5 is a square groove structure and extends axially upward. The outer edge of the fixing seat is provided with a plurality of symmetrically arranged limiting parts, and the limiting parts are provided with limiting notches 1-7-6 facing the center of the fixing seat, and the limiting notches 1-7-6 are also opened in the circumferential direction. The flange screw 1-8 is located inside the limiting part. A circular ring 1-3-2 is provided to cooperate with the impeller box assembly 1-2, and a plurality of damping ribs 1-3-3 are provided inside and a positioning boss 1-3-4 is provided outside.

[0044] In other embodiments, the limiting blind hole 1-3-5 accommodates the impeller tip, the impeller tip is connected to the impeller box assembly 1-2, the impeller box assembly 1-2 includes an impeller and a filter 1-2-3 connected in sequence, the impeller and the filter 1-2-3 are located in the impeller box 1-2-1, and the impeller box 1-2-1 is connected to the ring 1-3-2 and positioned by the positioning boss 1-3-4.

[0045] When the utility model is in use, the partition O-ring 1-4 is inserted into the O-ring trapezoidal groove of the partition along the guide end, and then the shielding ring is installed into the shielding ring installation groove 1-3-7; the positioning boss 1-3-4 is aligned, and the impeller top is inserted into the limiting blind hole 1-3-5, and the impeller box assembly 1-2 is assembled on the circular ring 1-3-2. After being assembled into one, the whole is installed in the watch case 1-1, and the partition O-ring is close to the finely machined inner wall 1-1-2. In the next step, the communication line avoidance groove 1-7-3 of the flange pressure ring 1-6 is facing the water inlet end of the watch case 1-1, and the pressure ring screw through hole 1-6-1 is aligned with the flange threaded hole 1-1-1, and the flange screw 1-8 is tightened. Finally, the communication line avoidance port of the fixing seat is facing the water inlet end of the watch case 1-1, and the fixing seat screw through hole is aligned with the fixing seat screw hole 1-6-2, and fixed with screws, thereby assembling into a base meter assembly.

[0046] These modifications or improvements made on the basis of the present utility model without departing from the spirit of the present utility model shall all fall within the scope of protection required by the present utility model.

Claims

1. A base meter assembly for a rising direct-reading water meter, characterized in that: include: A watch case is provided with a finely machined inner wall, a partition is arranged inside the watch case, a shielding ring is connected to the top of the partition, an impeller box assembly is connected to the bottom of the partition, and a plurality of O-ring trapezoidal grooves are provided between the edge of the partition and the finely machined inner wall; a flange pressure ring is fixedly connected to the top of the partition, and the flange pressure ring is fixedly connected to a fixing seat.

2. The base meter assembly of a rising direct-reading water meter according to claim 1, characterized in that: An O-ring is arranged in the O-ring trapezoidal groove, and a chamfered angle is arranged at the edge of the partition.

3. A base meter assembly for a rising direct-reading water meter according to claim 1 or 2, characterized in that: The impeller box assembly comprises an impeller box, in which an impeller and a filter screen connected in sequence are arranged.

4. A base meter assembly for a rising direct-reading water meter according to claim 1 or 2, characterized in that: The partition is provided with a shielding ring installation groove, the shielding ring is installed in the shielding ring installation groove, and the shielding ring installation groove includes a plurality of shielding ring installation grooves.

5. The base meter assembly of the ascending direct-reading water meter according to claim 4, characterized in that: A center positioning blind hole is arranged at the top of the center of the partition, and a limited position blind hole is arranged at the bottom of the center of the partition.

6. The base meter assembly of a rising direct-reading water meter according to claim 4, characterized in that: The partition is provided with a plurality of reinforcing ribs, and the reinforcing ribs are located between the shielding ring installation groove and the edge of the partition.

7. The base meter assembly of a rising direct-reading water meter according to claim 5, characterized in that: The partition is provided with a shrinkage hole, and the shrinkage hole is located between the shielding ring installation groove and the center positioning blind hole.

8. The base meter assembly of a rising direct-reading water meter according to claim 1, characterized in that: The flange pressure ring is provided with a pressure ring screw through hole and a fixing seat screw hole, and the pressure ring screw through hole and the fixing seat screw through hole are respectively provided with flange screws connected with the watch case and the fixing seat.

Images