Water meter and manufacturing process thereof

Abstract

The invention relates to the field of liquid flow measuring instruments, in particular to a water meter and a manufacturing process thereof, and the manufacturing process of the water meter comprises the following steps: step 1, mounting an impeller in a filter casing; 2, uniformly adhering a plurality of flow guide blocks to the inner wall of the filter casing; 3, the filter casing is placed in the shell and covered with a sealing box, the sealing box and the shell extrude and fix the filter casing, and the sealing box and the shell are sealed through an adhesive; fourthly, a protective cover with a light supplementing lamp is installed on the two sliding rods, and water meter assembling is completed; fifthly, the assembled water meter is connected with a water source for sealing performance testing, and a user can conveniently clean the filter screen on the premise that the water meter is not disassembled.

Description

Technical Field

[0001] The invention relates to the field of liquid flow measuring instruments, and in particular to a water meter and a manufacturing process thereof. Background Art

[0002] Water meters can be divided into two categories according to the measurement principle: velocity type and volumetric type. The most common of these is the velocity type water meter: the flow rate is reflected by the impeller speed. This type of water meter usually has a filter cover around the impeller to filter impurities in the water and ensure the normal rotation of the impeller. However, as the filter cover is used for a long time, impurities are easily accumulated on the filter holes, causing the filter cover to become less permeable and the impact force of the water flow to become weaker, thereby affecting the rotation efficiency of the impeller and indirectly causing inaccurate data displayed on the water meter. Therefore, the water meter needs to be disassembled, and the filter cover needs to be replaced or cleaned. Therefore, this application is proposed to address the above-mentioned problems. Summary of the invention

[0003] In view of this, the technical problem to be solved by the present invention is to provide a water meter and a manufacturing process thereof, so that the user can clean the filter without disassembling the water meter.

[0004] A water meter comprises a shell, two connecting pipes are fixedly connected to the shell, a filter cover is arranged in the shell, a plurality of strip filter slots are opened on the filter cover, a plurality of guide blocks are fixedly connected to the inner wall of the filter cover, an impeller is rotatably connected to the middle of the filter cover, an output rod is fixedly connected to the upper end of the impeller, a sealing box is fixedly connected to the upper end of the shell, a meter core is installed in the sealing box, the output rod and the meter core are connected by gear transmission, two sealing slide cylinders are fixedly connected in the sealing box, slide rods are slidably connected in the two sealing slide cylinders, a protective cover is fixedly connected to the upper end of the slide rod, a scraper is slidably connected in each strip filter slot, a connecting ring is fixedly connected to the upper ends of the plurality of scrapers, and the connecting ring is fixedly connected to the lower ends of the two slide rods.

[0005] The two slide bars are both sleeved with springs, which are fixed between the inner wall of the protective cover and the sealing box.

[0006] The plurality of guide blocks are evenly distributed on the inner wall of the filter housing, the spacing between the plurality of guide blocks is equal, and both ends of each guide block are provided with inclined surfaces.

[0007] A sealing cylinder is fixedly connected in the sealing box, a push plug is slidably connected in the sealing cylinder, a pull rod is fixedly connected to the upper end of the push plug, the pull rod is fixedly connected in the protective cover, and a water inlet pipe and a water outlet pipe are fixedly connected to the lower end of the sealing cylinder.

[0008] One-way valves are installed in the water inlet pipe and the water outlet pipe, and the diameter of the water inlet pipe is four times the diameter of the water outlet pipe.

[0009] A fill light is fixedly connected inside the protective cover.

[0010] The protective cover is fixedly connected with two connecting rods, and the lower ends of the two connecting rods are fixedly connected with convex lenses.

[0011] The two connecting rods are both soft steel wires.

[0012] A fixing frame is fixedly connected to the inner wall of one of the connecting tubes, a limiting rod is slidably connected to the fixing frame, a rubber plug is fixedly connected to the end of the limiting rod, a retaining ring is also fixedly connected to the inner wall of the connecting tube, the contact surface between the rubber plug and the retaining ring is an arc shape, and the other side of the rubber plug is an arc shape concave inward, and a second spring is fixed between the fixing frame and the rubber plug. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] The present invention is further described in detail below with reference to the accompanying drawings and specific implementation methods.

[0014] Figure 1 and Figure 2 The overall structural diagram of the water meter is shown in FIG.

[0015] Figure 3 is a schematic diagram of the structure of the protective cover;

[0016] Figure 4 This is a schematic diagram of the structure of the fill light;

[0017] Figure 5 It is a structural schematic diagram of a sealing box;

[0018] Figure 6 It is a structural schematic diagram of the sealing cylinder;

[0019] Figure 7 is a schematic diagram of the structure of the shell;

[0020] Figure 8 is a schematic diagram of the structure of the impeller;

[0021] Fig. 9 It is a schematic diagram of the structure of the rubber plug. DETAILED DESCRIPTION

[0022] The present invention is described in detail with reference to the accompanying drawings in the embodiments of the present invention.

[0023] A water meter comprises a housing 101, two connecting pipes 102 are welded on the housing 101, a filter cover 201 is arranged in the housing 101, a plurality of strip filter slots 202 are opened on the filter cover 201, a plurality of guide blocks 203 are fixedly connected to the inner wall of the filter cover 201, an impeller 204 is rotatably connected to the middle of the filter cover 201 through an axis, an output rod 205 is fixedly connected to the upper end of the impeller 204, a sealing box 401 is bonded to the upper end of the housing 101, and a sealing box 401 is arranged inside the sealing box 401. A watch movement is installed, the output rod 205 is connected to the watch movement through a gear transmission, two sealing slide cylinders 402 are fixedly connected in the sealing box 401, and slide rods 403 are slidably connected in the two sealing slide cylinders 402. The upper ends of the slide rods 403 are fixedly connected to the protective cover 601 by bolts, and each strip filter groove 202 is slidably connected with a scraper 301, and the upper ends of multiple scrapers 301 are fixedly connected with a connecting ring 302, and the connecting ring 302 is welded to the lower ends of the two slide rods 403.

[0024] The two slide bars 403 are both sleeved with springs 602 , and the springs 602 are fixed between the inner wall of the protective cover 601 and the sealing box 401 .

[0025] The plurality of guide blocks 203 are evenly distributed on the inner wall of the filter housing 201 , the spacing between the plurality of guide blocks 203 is equal, and both ends of each guide block 203 are provided with inclined surfaces.

[0026] The sealing box 401 is fixedly connected with a sealing cylinder 501, and a push plug 502 is slidably connected inside the sealing cylinder 501. The upper end of the push plug 502 is fixedly connected with a pull rod, and the pull rod is fixedly connected in the protective cover 601. The lower end of the sealing cylinder 501 is fixedly connected with a water inlet pipe 503 and a water outlet pipe 504.

[0027] One-way valves are installed in the water inlet pipe 503 and the water outlet pipe 504 , and the diameter of the water inlet pipe 503 is four times the diameter of the water outlet pipe 504 .

[0028] A fill light 603 is fixedly connected to the protective cover 601 via bolts.

[0029] The protective cover 601 is fixedly connected to two connecting rods 604 , and the lower ends of the two connecting rods 604 are fixedly connected to convex lenses 605 .

[0030] The two connecting rods 604 are both soft steel wires.

[0031] A fixing frame 702 is fixedly connected to the inner wall of one of the connecting tubes 102, and a limiting rod 704 is slidably connected to the fixing frame 702. A rubber plug 703 is fixedly connected to the end of the limiting rod 704. A retaining ring 701 is also fixedly connected to the inner wall of the connecting tube 102. The contact surface between the rubber plug 703 and the retaining ring 701 is an arc shape, and the other surface of the rubber plug 703 is an arc shape concave inwardly. A second spring 705 is fixed between the fixing frame 702 and the rubber plug 703.

[0032] The manufacturing process of the water meter includes the following steps:

[0033] Step 1: The impeller 204 is installed inside the filter cover 201;

[0034] Step 2: multiple guide blocks 203 are evenly bonded to the inner wall of the filter cover 201;

[0035] Step 3: The filter cover 201 is placed in the housing 101 and covered with the sealing box 401. The sealing box 401 and the housing 101 are pressed and fixed to the filter cover 201, and the sealing box 401 and the housing 101 are sealed with an adhesive;

[0036] Step 4: The protective cover 601 with the fill light 603 is installed on the two slide bars 403 to complete the water meter assembly;

[0037] Step 5: Connect the assembled water meter to a water source for a leak test.

[0038] When using the water meter, the two connecting pipes 102 on the water meter are connected to the water pipe. Water enters the housing 101 through the connecting pipe 102 at one end, and part of the water enters the filter cover 201. The multiple guide blocks 203 play a role in guiding the water. The water enters the filter cover 201 through the gaps between the multiple guide blocks 203, so that the water can flow along the inclined surface on the guide blocks 203, and then can have an impact on the impeller 204, causing the impeller 204 to rotate, and then flow out through the filter cover 201, and finally discharged through the connecting pipe 102 at the other end. When the impeller 204 rotates, it drives the output rod 205 to rotate. Since the output rod 205 is connected to the watch movement through a gear transmission, the rotation of the output rod 205 can drive the watch movement to operate, so that the watch movement can display data for the user to refer to the water usage. The sealing box 401 seals the housing 101 to prevent water leakage in the housing 101.

[0039] The protective cover 601 protects the watch movement, preventing the upper end of the watch movement from being bumped or dusted, which may cause the watch movement to be unable to be used normally. When the user needs to read the water meter data, the user pulls the protective cover 601 upward, so that the protective cover 601 drives the two slide bars 403 to slide in the two slide cylinders 402 respectively. The slide cylinder 402 is made of sealing rubber material, which plays a role in sealing between the slide bar 403 and the sealing box 401. The two slide bars 403 move upward while pulling the connecting ring 302, and the connecting ring 302 drives multiple scrapers 301 Sliding upward, the scraper 301 can scrape off the impurities stuck in the strip filter groove 202 when sliding in the strip filter groove 202, thereby preventing the strip filter groove 202 from being blocked by impurities and affecting the rotation of the impeller 204, thereby further ensuring the accuracy of the water meter display. Compared with conventional water meters, the user does not need to disassemble the water meter to clean the filter cover 201, nor does he need to deliberately pull the protective cover 601 to clean the filter cover 201. Instead, the filter cover 201 can be cleaned every time the water meter data is read, which is convenient and practical.

[0040] When the user reads the data, the protective cover 601 is pulled upward, so that the two springs 602 are stretched by force, and at the same time, the pull rod pulls the push plug 502 to slide upward in the sealing cylinder 501. At this time, the one-way valve in the water inlet pipe 503 opens, and the one-way valve in the water outlet pipe 504 closes, and the water inside the water meter can enter the sealing cylinder 501 through the water inlet pipe 503. When the protective cover 601 is loosened, the two springs 602 drive the protective cover 601 to move downward automatically. At this time, the one-way valve in the water inlet pipe 503 is closed, and the one-way valve in the water outlet pipe 504 is opened. When the protective cover 601 is opened, water is discharged back into the water meter through the water outlet pipe 504. Since the diameter of the water inlet pipe 503 is four times the diameter of the water outlet pipe 504, and when the user does not apply pressure to the protective cover 601, the water discharge per unit time of the water outlet pipe 504 is lower than that of the water inlet pipe 503, so that the protective cover 601 can slowly descend, making it easier for the user to observe the water meter data, and the protective cover 601 can automatically close after a period of time, ensuring that the user has enough time to check the data, thereby avoiding the phenomenon that the user forgets to close the protective cover 601.

[0041] The protective cover 601 is equipped with a battery and a switch. When the protective cover 601 is pulled upward, the user turns on the switch and the fill light 603 lights up, making it easier for the user to view the water meter data in a dark environment or at night, further improving convenience.

[0042] The convex lens 605 plays a role of focusing light. When the fill light 603 emits light, the light is focused at the position where the user needs to observe the data through the convex lens 605. The user can bend the convex lens 605 to deform the two connecting rods 604 made of soft steel wire, thereby facilitating the adjustment of the focusing position of the convex lens 605, so that the user can clearly observe the water meter data.

[0043] When water flows through one of the connecting pipes 102, the rubber plug 703 is separated from the retaining ring 701 under the push of the water flow, and the second spring 705 is stretched by the force. At this time, the water flow can flow out through the gap between the rubber plug 703 and the retaining ring 701. When the water stops flowing, the rubber plug 703 is attached to the retaining ring 701 under the action of the second spring 705, thereby avoiding the backflow of water and affecting the accuracy of the water meter data. Since the contact surface between the rubber plug 703 and the retaining ring 701 is arc-shaped, the rubber plug 703 can better fit on the retaining ring 701 to improve the sealing performance. The other side of the rubber plug 703 is an arc-shaped inward concave, and the force of the water flow can further make the rubber plug 703 fit on the retaining ring 701 to avoid the separation of the two.

Claims

1. A water meter, characterized in that: The invention comprises a housing (101), two connecting pipes (102) are fixedly connected to the housing (101), a filter cover (201) is arranged inside the housing (101), a plurality of strip filter slots (202) are provided on the filter cover (201), a plurality of guide blocks (203) are fixedly connected to the inner wall of the filter cover (201), an impeller (204) is rotatably connected to the middle of the filter cover (201), an output rod (205) is fixedly connected to the upper end of the impeller (204), a sealing box (401) is fixedly connected to the upper end of the housing (101), and the sealing box (401) A watch movement is installed inside, the output rod (205) is connected to the watch movement through a gear transmission, two sealing slide cylinders (402) are fixedly connected inside the sealing box (401), and slide rods (403) are slidably connected inside the two sealing slide cylinders (402), and a protective cover (601) is fixedly connected to the upper end of the slide rod (403), and a scraper (301) is slidably connected inside each strip filter groove (202), and a connecting ring (302) is fixedly connected to the upper end of the plurality of scrapers (301), and the connecting ring (302) is fixedly connected to the lower ends of the two slide rods (403).

2. A water meter according to claim 1, characterized in that: The two slide bars (403) are both sleeved with springs (602), and the springs (602) are fixed between the inner wall of the protective cover (601) and the sealing box (401).

3. A water meter according to claim 2, characterized in that: The plurality of guide blocks (203) are evenly distributed on the inner wall of the filter cover (201), the spacing between the plurality of guide blocks (203) is equal, and both ends of each guide block (203) are provided with inclined surfaces.

4. A water meter according to claim 3, characterized in that: The sealing box (401) is fixedly connected with a sealing cylinder (501), the sealing cylinder (501) is slidably connected with a push plug (502), the upper end of the push plug (502) is fixedly connected with a pull rod, the pull rod is fixedly connected in the protective cover (601), and the lower end of the sealing cylinder (501) is fixedly connected with a water inlet pipe (503) and a water outlet pipe (504).

5. A water meter according to claim 4, characterized in that: Both the water inlet pipe (503) and the water outlet pipe (504) are installed with a one-way valve, and the diameter of the water inlet pipe (503) is four times the diameter of the water outlet pipe (504).

6. A water meter according to claim 5, characterized in that: A fill light (603) is fixedly connected inside the protective cover (601).

7. A water meter according to claim 6, characterized in that: The protective cover (601) is fixedly connected to two connecting rods (604), and the lower ends of the two connecting rods (604) are fixedly connected to convex lenses (605).

8. A water meter according to claim 7, characterized in that: The two connecting rods (604) are both soft steel wires.

9. A water meter according to claim 1, characterized in that: A fixing frame (702) is fixedly connected to the inner wall of one of the connecting tubes (102), a limiting rod (704) is slidably connected to the fixing frame (702), a rubber plug (703) is fixedly connected to the end of the limiting rod (704), a retaining ring (701) is also fixedly connected to the inner wall of the connecting tube (102), the contact surface between the rubber plug (703) and the retaining ring (701) is arc-shaped, and the other surface of the rubber plug (703) is an arc-shaped inward depression, and a second spring (705) is fixed between the fixing frame (702) and the rubber plug (703).

10. The manufacturing process of the water meter according to claim 7, characterized in that: The process includes the following steps: Step 1: The impeller (204) is installed inside the filter housing (201); Step 2: a plurality of guide blocks (203) are evenly bonded to the inner wall of the filter cover (201); Step 3: The filter cover (201) is placed in the housing (101) and covered with the sealing box (401), the sealing box (401) and the housing (101) are pressed and fixed to the filter cover (201), and the sealing box (401) and the housing (101) are sealed with an adhesive; Step 4: The protective cover (601) with the fill light (603) is installed on the two slide bars (403) to complete the assembly of the water meter; Step 5: Connect the assembled water meter to a water source for a leak test.

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