Inner hexagonal spiral buckle fastening flow meter

Abstract

According to the technical scheme, in order to simplify the structure that an existing flowmeter is assembled through a screw or an exposed buckle, an inner hexagonal groove is formed in a front cover, the front cover and a shell are connected through threads through a spiral buckle structure, and during assembling, internal parts of the flowmeter are placed in the shell firstly, then the shell is connected with the inner hexagonal groove through threads, and then the inner hexagonal groove is formed in the shell. And then the outer body and the front cover are fastened by using a hexagon wrench. After the flowmeter is assembled, the electromagnetic inductor is placed in the space of the inner hexagonal groove, and sealing, glue pouring and curing are carried out. According to the technical scheme, the inner hexagonal space of the front cover and the electromagnetic sensor are shared, the front cover is connected and fastened from the interior of the shell through the spiral buckle and an inner hexagonal wrench, the overall structure of the flowmeter is more compact and miniaturized, screws are not needed for fastening, and therefore production efficiency is improved, and cost is reduced.

Description

Technical Field

[0001] This utility model relates to the field of water treatment equipment and beverage machine technology, and particularly to the field of household water purifiers. Background Technology

[0002] The working principle of a flow meter is as follows: fluid flows into the flow meter from the inlet, passes through the impeller inside the flow meter, and then flows out from the outlet. (See...) Figure 3 The diagrams with arrows A, B, and C illustrate how the fluid drives the impeller to rotate at arrow B. See details... Figure 1 , Figure 3 Serial number 3. Impeller 3 drives magnetic body 5 to rotate (see...) Figure 3 For item 5, when the magnetic object 5 approaches the electromagnetic sensor on the flowmeter, see details. Figure 1 Number 4: Electromagnetic sensors generate pulse signals, which are used by flow meters to measure flow.

[0003] The demand for flow meters in water purifier end-point connection systems is increasing year by year. However, existing flow meters have the following problems: 1. Large size and non-compact structure. When customers use flow meters in faucets, they take up too much space, resulting in large faucet sizes. 2. High cost. Most existing flow meters have complex assembly structures, making production labor-intensive and time-consuming. Summary of the Invention

[0004] To overcome the aforementioned shortcomings of existing flow meters, the main technical solution of this utility model is as follows: To simplify the structure of existing flow meters that use screws or exposed snap-fit ​​assemblies, an internal hexagonal groove is provided on the front cover, as detailed below. Figure 4 Item 14 employs a spiral snap-fit ​​structure to connect the front cover and the outer casing via threads. During assembly, the internal components of the flowmeter are first placed into the outer casing, and then the outer casing and front cover are tightened using a hex wrench. After the flowmeter is assembled, the space in the internal hexagonal slot is used to place the electromagnetic sensor and then seal it with potting compound. This structural solution of the present invention shares the internal hexagonal space of the front cover with the electromagnetic sensor, and uses a spiral snap-fit ​​with an internal hexagonal wrench to connect and tighten the front cover from the inside of the outer casing, making the overall structure of the flowmeter more compact and miniaturized, eliminating the need for screw tightening, thereby improving production efficiency and reducing costs.

[0005] The specific technical solution of this utility model is: an internal hexagonal spiral snap-fit ​​flow meter, which consists of a shell, a front cover, an impeller, an electromagnetic sensor, a magnet, and a sealing ring; when the water flow of the flow meter passes through the inlet pipe and one side of the impeller circumference to the outlet pipe, it drives the impeller to rotate and drives the magnet on it to move; when the electromagnetic sensor senses the magnetic field of the magnet, it generates a pulse signal; the feature is that: the front cover is provided with an internal polygonal groove, and the outer edge of the front cover is provided with threads; the front cover and the shell are connected by the threads using a spiral snap-fit ​​structure; the electromagnetic sensor is provided in the internal polygonal groove.

[0006] The outer casing is provided with a buckle and a buckle window; by tightening with an inner polygonal wrench, the threads on the front cover are engaged with the buckle of the outer casing from the inside of the casing, and the electromagnetic sensor in the polygonal groove is provided with sealant.

[0007] The outer casing is provided with a rear support conical hole, the front cover is provided with a front support conical hole, and the impeller is provided with a two-ended conical shaft. The shaft on the impeller is in rotational engagement with the rear support conical hole and the front support conical hole between the front cover and the outer casing.

[0008] The number of sides of the inner polygonal groove of the front cover is n, where n is any integer from 3, 4, 5, 6...20. The offset distance between the axes of the water inlet pipe and the water outlet pipe of the outer shell is E, where E = 0-30 mm. Note: When n = 6, the inner polygonal groove of the front cover is an internal hexagonal groove, which can be tightened with an internal hexagonal wrench.

[0009] The front cover has two symmetrical threads, and the outer shell has two symmetrical buckles and two symmetrical buckle windows.

[0010] The beneficial effects of this utility model are:

[0011] The outer shell and front cover are connected by hexagonal snap-fit, and the space of the hexagonal slot is used to place the electromagnetic sensor. No screws are needed for fastening, resulting in a compact structure, reduced size, high production efficiency, and low manufacturing cost. Attached Figure Description

[0012] Figure 1 Schematic diagram of the flow meter structure of this utility model;

[0013] Figure 2 yes Figure 1 A partially enlarged schematic diagram of the spiral buckle structure between the outer shell and the front cover;

[0014] Figure 3 This utility model's flow meter is shown in the schematic diagram of water flow.

[0015] Figure 4 A schematic diagram of the left side of the front cover of the flow meter of this utility model;

[0016] Figure 5 A schematic diagram of the right side of the front cover of the flow meter of this utility model;

[0017] Figure 6 Schematic diagram of the flow meter housing of this utility model;

[0018] Figure 7 This utility model's flow meter shows a schematic diagram of the deviation structure of the inlet and outlet water pipes.

[0019] In this utility model, the specification is attached... Figure 1 To the attached Figure 7 Each label represents:

[0020] 1. Outer casing; 2. Front support conical hole; 3. Impeller; 4. Electromagnetic sensor; 5. Magnetic body; 6. Sealing ring; 7. Front cover; 8. Rear support conical hole; 9. Inlet pipe; 10. Outlet pipe; 11. Shaft; 12. Thread; 13. Shaft offset E; 14. Inner polygonal groove; 15. Snap fastener; 16. Snap fastener window. A, B, and C are water flow arrow markings; n is the number of sides of the inner polygonal groove. Detailed Implementation

[0021] An embodiment of the internal hexagonal spiral snap-fit ​​flow meter of this utility model is detailed below. Figures 1 to 7 :

[0022] A hexagonal spiral snap-fit ​​flow meter comprises a housing 1, a front cover 7, an impeller 3, an electromagnetic sensor 4, a magnet 5, and a sealing ring 6. Water flows through the inlet pipe 9, passing one side of the impeller 5's circumference to the outlet pipe 10, driving the impeller 3 to rotate and causing the magnet 5 on it to move. When the electromagnetic sensor 4 senses the magnetic field of the magnet 5, it generates a pulse signal. The front cover 7 has an inner polygonal groove 14, and the outer edge of the front cover 7 has threads 12. A spiral snap-fit ​​structure connects the front cover 7 to the housing 1 via the threads 12. The electromagnetic sensor 4 is located within the inner polygonal groove 14.

[0023] The outer casing 1 is provided with a buckle 15 and a buckle window 16; by tightening the wrench of the inner polygon 14, the thread 12 on the front cover 7 is engaged with the buckle 15 of the outer casing 1 from the inside of the outer casing 1. An electromagnetic sensor is provided in the space of the polygonal groove 14 of the front cover 7, and the electromagnetic sensor is provided with sealant.

[0024] The outer casing 1 is provided with a rear support conical hole 8, the front cover 7 is provided with a front support conical hole 2, and the impeller 3 is provided with a two-ended conical shaft 11. The shaft 11 on the impeller 3 is rotated within the front support conical hole 2 and the rear support conical hole 8 between the front cover 7 and the outer casing 1.

[0025] The number of sides of the inner polygonal groove 14 of the front cover 7 is n, where n is any integer from 3, 4, 5, 6 to 20. The axial deviation distance of the water inlet pipe 9 and the water outlet pipe 10 of the outer shell 1 is E, where E = 0-30 mm.

[0026] The front cover 7 has two symmetrical threads 12, and the outer shell 1 has two symmetrical buckles 15 and two symmetrical buckle windows 16.

[0027] Although embodiments of the present invention have been shown and described, those skilled in the art should understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the claims and their equivalents. Improvements made without inventive effort should be included within the protection scope of the present invention.

Claims

1. A hexagonal screw-locking flow meter, comprising a housing, a front cover, an impeller, an electromagnetic sensor, a magnetic body, and a sealing ring, wherein water flowing through the inlet pipe and passing one side of the impeller circumference to the outlet pipe drives the impeller to rotate and drives the magnetic body thereon to move; the electromagnetic sensor generates a pulse signal when it senses the magnetic field of the magnetic body; characterized in that: The front cover is provided with an inner polygonal recess, and the outer edge of the front cover is provided with screw threads.

2. An internally hexed screw clamped flow meter according to claim 1, wherein: The shell is provided with a buckle and a buckle window, and the screw threads on the front cover are engaged with the buckle in the shell by tightening the inner polygonal wrench.

3. An internally hexed screw clamped flow meter according to claim 2, wherein: The shell is provided with a rear support conical hole, and the front cover is provided with a front support conical hole.

4. An internally hexed screw-clip fastened flow meter according to claim 3, wherein: The number of sides of the inner polygonal recess of the front cover is n, and n is any one of the integers 3, 4, 5, 6, …, 20.

5. An internally hexed screw-clip fastened flow meter according to claim 4, wherein: The front cover is provided with two symmetrical screw threads, and the shell is provided with two symmetrical buckles and two symmetrical buckle windows.

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