Electromagnetic water meter sensor lining

Abstract

An electromagnetic water meter sensor lining comprises a flange, a metal flow guide pipe, a side plate, a plastic pipe, a plastic ring and metal and plastic bonding glue, and the flange, the metal flow guide pipe and the side plate are welded to form a flow guide body assembly; the metal flow guide pipe is made of SUS304 material, and four electrode holes are uniformly distributed in the middle of the metal flow guide pipe; the plastic pipe is a standard part and is slightly longer than the electromagnetic water meter welding flow guide body assembly; the plastic pipe is in interference fit with the metal flow guide pipe; the plastic pipe and the plastic ring are hot-melted together; the plastic pipe is pressed into the metal flow guide pipe and is in tight interference fit with the metal flow guide pipe; the plastic ring and the flange face can be tightly bonded together through the metal and plastic bonding glue. And the plastic plate and the flange surface are pressed and attached together. The lining is made of a standard plastic pipe, and the flange face flange is made of a plastic plate through a hot melting process. The plastic lining is good in insulativity, strong in corrosion resistance, smooth in surface, not prone to scaling, good in fluid measurement stability and high in tensile strength, the product performance is greatly improved, and the service life of the product is greatly prolonged.

Description

Technical Field

[0001] The utility model relates to the field of electromagnetic water meters, in particular to an electromagnetic water meter sensor lining structure. Background Art

[0002] In recent years, electromagnetic water meters have been increasingly used in the measurement field of the water industry. Their high accuracy, good adaptability, and hygienic reliability have been fully recognized by the industry, and their application prospects have a good development momentum. With the widespread application of electromagnetic water meters, the production process of electromagnetic water meters is also gradually improving, especially in the production of electromagnetic water meter sensor linings. Traditional lining materials are mostly made of rubber, followed by F4, F46, etc. Different lining materials correspond to different use environments, and the corresponding process production difficulties are also different. The production process of polymer fusion plastic lining is relatively simple, the lining strength is high, the overall appearance is regular, and the application environment is wide. Due to the complex production process of traditional linings, manufacturers mostly use outsourcing, which is costly and has a long delivery time. The production of polymer fusion plastic linings is relatively convenient. The factory only needs to purchase the corresponding equipment and materials to realize independent production in the factory, so that the manufacturing cost, production cycle, product quality and other aspects can be well controlled.

[0003] The electromagnetic water meter sensor lining requires good insulation, high strength and strong adhesion to the substrate, good adaptability to the medium and corresponding temperature, and at the same time, it must meet the requirements of health permits. The polymer fusion plastic lining meets this series of requirements well, and its performance advantages are more obvious. The polymer fusion plastic pipe implements national standards and belongs to sanitary, non-toxic green building materials, which can be used as drinking water pipes. Plastic pipes have the characteristics of low temperature resistance, impact resistance, and high tensile strength, and are not affected by local regional temperature changes. The inner surface of the plastic pipe is smooth, scale-free, chemically resistant, and has good welding properties, which is very suitable for the production of sensor linings. When making the lining, the plastic pipe can be pressed into the electromagnetic water meter welding flow guide assembly through a press, and then the plastic pipe and the plastic ring are fused by a hot melt process. The fused plastic ring is equivalent to the flange of the traditional rubber lining, which plays a role in connection, sealing and beauty. The excess fusion material on the plastic plate is milled flat by a machining center to complete the production of the electromagnetic water meter plastic lining. Summary of the invention

[0004] The electromagnetic water meter sensor of the utility model is lined with plastic tube and plastic plate materials and is made by hot-melt process. The wall thickness of the plastic tube is generally 3-7mm. If it is too thick, it will affect the magnetic field strength. If it is too thin, the strength is not enough and it cannot be pressed into the metal guide tube through interference fit. The thickness of the plastic ring is 8-12mm, and the inner diameter is slightly larger than the plastic tube by 1-2mm to ensure that the plastic ring can be smoothly put on the plastic tube after hot melting. According to the outer diameter of the standard plastic tube, the corresponding metal guide tube is selected. The outer diameter of the plastic tube is slightly larger than the inner diameter of the metal guide tube by 0.5-1.5mm. Cut a plastic tube that is 20-40mm longer than the welded guide assembly, and use a press to press the plastic tube into the metal guide tube. The plastic tube and the metal guide tube form a tight interference fit, and then according to the size of the contact surface between the plastic ring and the flange, apply a layer of metal and plastic bonding glue on the outside of the flange on both sides. Use a hot melter of the same specification, adjust the heating temperature to about 230-280°, heat the plastic tube and the plastic ring at the same time, take it out after the hot melter melts the plastic, and quickly put the plastic ring into the plastic tube and press it tightly. After the glue solidifies, use a machining center to mill off the excess tube material and make it flush with the plastic ring, so that a continuous and regular plastic lining is formed.

[0005] In order to achieve the above purpose, the technical solution of the utility model is as follows:

[0006] An electromagnetic water meter sensor lining structure comprises a flange, a metal flow guide pipe, a side plate, a plastic pipe, a plastic ring, and a metal and plastic adhesive, and is characterized by:

[0007] The flange, the metal flow guide pipe and the side plate are welded to form a flow guide assembly;

[0008] The metal flow guide tube is made of SUS304 material, with 4 electrode holes evenly distributed in the middle;

[0009] The plastic pipe is a standard part, and its length is slightly longer than the welded flow guide assembly of the electromagnetic water meter;

[0010] The plastic tube and the metal flow guide tube are interference fit together;

[0011] The plastic tube and the plastic ring are thermally melted together;

[0012] The plastic tube is pressed into the metal flow guide tube and is tightly interference fit with the metal flow guide tube;

[0013] The metal and plastic bonding adhesive can tightly bond the plastic ring and the flange surface together;

[0014] The plastic plate is pressed tightly together with the flange surface.

[0015] Beneficial effects of the utility model:

[0016] The electromagnetic water meter sensor of the utility model adopts a standard plastic pipe as the inner lining, and a plastic plate as the flange surface, which is made by a hot-melt process. The plastic lining has good insulation, strong corrosion resistance, a smooth surface that is not easy to scale, good fluid measurement stability, and high tensile strength, which greatly improves product performance and service life. The hot-melt process is mature and simple, the production process does not produce hazardous waste, is sanitary and environmentally friendly, has a high production qualification rate and reliable quality. Compared with traditional sensor linings, there have been great improvements in manufacturing costs, production cycles, product quality, service life, sanitation and environmental protection, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Attached Figure 1 The utility model is a schematic diagram of the structure of the welding flow guide assembly of the electromagnetic water meter.

[0018] Attached Figure 2 This is a schematic diagram of the plastic pipe structure of the utility model.

[0019] Attached Figure 3 This is a schematic diagram of the plastic ring structure of the utility model.

[0020] Attached Figure 4 The utility model is a schematic diagram of the body guide structure of the plastic lined electromagnetic water meter. DETAILED DESCRIPTION

[0021] The technical solution of the utility model is further described in detail below in conjunction with specific implementation methods and accompanying drawings.

[0022] As attached Figure 1 Combined with the attached Figure 2 , Attachment Figure 3 , Attachment Figure 4 The invention discloses an electromagnetic water meter sensor lining structure, comprising a flange (1), a metal flow guide tube (3), a side plate (2), a plastic tube (4), a plastic ring (5), and a metal and plastic bonding adhesive.

[0023] The flange, the metal flow guide tube and the side plate are welded to form a flow guide assembly. The welded flow guide assembly is placed vertically on a press machine, and the plastic pipe (4) is pressed into the metal flow guide tube by the press machine so that the two ends extend out of the welded flow guide assembly relative to the electromagnetic water meter by a comparable length.

[0024] Apply metal and plastic adhesive glue on the flange surface. The glue application area is consistent with the area of ​​the plastic ring (5) contacting the flange. Use the female end of the hot melter to cover the protruding plastic tube (4), and insert the male end into the inner diameter of the plastic ring (5). Heat it to 230-280° at the same time. After the plastic is slightly melted, take out the hot melter, cover the plastic ring (5) with the plastic tube (4), and use the tooling pressure plate to press the plastic ring (5) and the flange surface. Follow the same operation steps on the other end. After the glue solidifies, place the lined flow guide vertically on the CNC machining center, mill off the excess material protruding from the plastic tube (4), and trim the plastic lining. In this way, the lined flow guide is completed. The remaining operations are the same as mass production of electromagnetic water meters to complete the production of electromagnetic water meter plastic lining sensors.

[0025] According to the utility model, 10 complete machine prototypes were manufactured and tested in terms of overall strength, sealing performance, high and low temperature simulation, pressure detection and flow metering. The test results were excellent and showed that its performance advantages were more prominent than those of traditional linings.

[0026] The technical features of the above-described embodiments can be combined arbitrarily. In order to make the description concise, all possible combinations of the technical features in the above-described examples are not described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The description and application of the utility model here are illustrative, and it is not intended to limit the scope of the utility model to the above-described examples. The replacement and equivalent various components of the embodiments disclosed here are well known. It should be clear to those skilled in the art that, without departing from the spirit or essential features of the utility model, the utility model can be implemented in other forms, structures, layouts, proportions, and with other components, materials and parts. Without departing from the scope and spirit of the utility model, other deformations and changes can be made to the examples disclosed here.

Claims

1. An electromagnetic water meter sensor lining, comprising a flange, a metal flow guide tube, a side plate, a plastic tube, a plastic ring, a plastic plate, and a metal and plastic adhesive, characterized in that: The flange, the metal flow guide pipe and the side plate are welded to form a flow guide assembly; The metal flow guide tube is made of SUS304 material, with 4 electrode holes evenly distributed in the middle; The plastic pipe is a standard part, and its length is slightly longer than the welded flow guide assembly of the electromagnetic water meter; The plastic tube and the metal flow guide tube are interference fit together; The plastic tube and the plastic ring are thermally melted together; The plastic tube is pressed into the metal flow guide tube and is tightly interference fit with the metal flow guide tube; The metal and plastic bonding adhesive can tightly bond the plastic ring and the flange surface together; The plastic plate is pressed tightly against the flange surface.

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