Novel shielding device for magnetic induction intensity measurement

Abstract

The utility model discloses a novel shielding device for magnetic induction intensity measurement, which comprises a main body unit which comprises a magnetic water meter connector and a water meter main body arranged on the magnetic water meter connector, and a shielding unit which comprises a shielding case I and a shielding case II. The threaded rod is moved out of the threaded cylinder by rotating the pressing disc, then the annular plate is moved out of the threaded cylinder, after the annular plate is taken down from the threaded cylinder, the length of the section, between the annular plate and the winding roller, of the grounding chain meets the requirement that the threaded cylinder is sleeved with the annular plate, and the section of the grounding chain is embedded into the notch from the notch; then the redundant grounding chain is wound on the column body, then the grounding chain wound on the column body is sleeved with a rubber ring, so that the grounding chain is bound on the column body, then the threaded sleeve is rotated to enable the grounding chain not to abut against the column body, and then the winding roller is rotated to wind or unwind the grounding chain needed by grounding. Therefore, the required length of the grounding chain can be adjusted.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic shielding, in particular to a novel shielding device for measuring magnetic induction intensity. Background Art

[0002] The strength of the electromagnetic field can easily change due to the influence of the external magnetic field. The electromagnetic water meter is an instrument that uses the induced electromotive force generated by the movement of a moving conductor in a magnetic field to achieve the measurement function. External static electricity will have a certain impact on the magnetic field inside the meter, so some shielding devices are needed to shield and protect the meter.

[0003] Publication number CN 218068101 U discloses a shielding device for measuring magnetic induction intensity. By adding a shielding cover, the shielding cover consists of a left cavity and a right cavity. The left cavity and the right cavity are rotatably connected at one end, and the other end can be locked with each other through a clamping block and a fitting block to form a closed annular shielding cover. A grounding chain is installed on the shielding cover, and the grounding chain touches the ground to effectively conduct the surface charge of the shielding cover into the ground. The shielding cover is made of electromagnetic pure iron material with high magnetic permeability, which can effectively concentrate external stray magnetic fields on the shielding cover, making the shielding cover a cavity conductor, thereby improving the shielding effect and facilitating disassembly.

[0004] The length of the grounding chain in the above-mentioned prior art cannot be adjusted as needed during use, and the scope of use is limited. Moreover, during the process of carrying and transporting the shielding device, the grounding chain cannot be rolled up in an orderly manner, which easily leads to cross-knotting, making it inconvenient to carry. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the specification abstract and utility model name of this application to avoid blurring the purpose of this section, specification abstract and utility model name, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] In view of the above-mentioned problems of a novel shielding device for measuring magnetic induction intensity, the present utility model is proposed.

[0007] Therefore, the purpose of the utility model is to provide a new shielding device for measuring magnetic induction intensity, which is used to solve the problems that the length of the grounding chain cannot be adjusted as needed, the scope of use is limited, and in the process of carrying and transporting the shielding device, the grounding chain cannot be rolled up in an orderly manner, which easily leads to cross-knotting, making it inconvenient to carry.

[0008] In order to solve the above technical problems, the utility model provides the following technical solutions: a new shielding device for measuring magnetic induction intensity, comprising:

[0009] A main unit, comprising a magnetic water meter connecting body and a water meter main body installed on the magnetic water meter connecting body;

[0010] The shielding unit comprises a shielding cover 1 and a shielding cover 2, wherein the shielding cover 1 and the shielding cover 2 are detachably mounted on the outside of the magnetic water meter connecting body, a connecting block is fixed on one side of the shielding cover 2, a threaded cylinder is fixed on the connecting block, an annular plate is sleeved on the outer side of the threaded cylinder, a grounding chain is fixed on the annular plate, a threaded rod is threadedly connected to the inner thread of the threaded cylinder, a pressure plate is fixed on the top of the threaded rod, and a storage component for winding up the grounding chain is arranged on the shielding cover 2.

[0011] As a preferred solution of a new type of shielding device for measuring magnetic induction intensity described in the utility model, wherein: a mounting hole is opened on the shielding cover one, a plurality of side plates are fixed on the shielding cover one and the shielding cover two, a circular hole is opened in the side plate, a bolt is inserted in the circular hole, and a nut is threadedly connected to the bolt.

[0012] As a preferred solution of the novel shielding device for measuring magnetic induction intensity described in the utility model, the diameter of the pressure plate is greater than the diameter of the annular plate.

[0013] As a preferred solution of a new type of shielding device for measuring magnetic induction intensity described in the utility model, the storage assembly includes a screw fixed on the second shielding cover, one end of the screw is rotatably connected to a rotating rod, the end of the rotating rod away from the screw is fixed with a column, and the end of the column away from the rotating rod is fixed with a winding roller for winding up the grounding chain.

[0014] As a preferred solution of the novel shielding device for measuring magnetic induction intensity described in the utility model, a slot is provided on the winding roller, and a rubber ring is sleeved on the column.

[0015] As a preferred solution of the novel shielding device for measuring magnetic induction intensity described in the utility model, wherein: a threaded sleeve is threadedly connected to the screw rod, and the diameter of the threaded sleeve is smaller than the diameter of the column and larger than the diameter of the rotating rod.

[0016] The beneficial effects of the utility model are as follows: the threaded rod is moved out of the threaded barrel by rotating the pressure plate, and then the annular plate is moved out of the threaded barrel. After the annular plate is removed from the threaded barrel, the length of the grounding chain between the annular plate and the winding roller is sufficient to allow the annular plate to be sleeved on the threaded barrel. This section of the grounding chain is embedded in the slot from the slot, and then this section of the excess grounding chain is wrapped around the column. Then, a rubber ring is sleeved on the outside of the grounding chain that has been wrapped around the column, thereby binding this part of the grounding chain to the column, and then the threaded sleeve is rotated so that it no longer presses against the column, and then the winding roller is rotated to wind or unwind the grounding chain required for grounding, thereby being able to adjust the required length of the grounding chain, and in the process of carrying and transporting, the grounding chain can be wound up to avoid cross-knotting during carrying and transportation. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the following briefly introduces the drawings required for the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0018] Figure 1 The utility model is a structural schematic diagram of a novel shielding device for measuring magnetic induction intensity.

[0019] Figure 2 This is an enlarged view of the partial structure of a novel shielding device for measuring magnetic induction intensity according to the utility model.

[0020] Figure 3 The utility model is a schematic diagram of the partial structure disassembly of a novel shielding device for measuring magnetic induction intensity.

[0021] Figure 4 This is an enlarged view of the local structure of a new type of shielding device for measuring magnetic induction intensity of the utility model.

[0022] Figure 5 This is an enlarged view of the local structure of a new type of shielding device for measuring magnetic induction intensity in the utility model.

[0023] Figure 6 This is an enlarged view of the partial structure of a novel shielding device for measuring magnetic induction intensity according to the utility model.

[0024] Description of the drawings: 100, main unit; 101, magnetic water meter connector; 102, water meter body; 103, mounting hole; 104, side plate; 105, bolt; 106, round hole; 107, nut; 200, shielding unit; 201, shielding cover 1; 202, shielding cover 2; 203, connecting block; 204, threaded cylinder; 205, annular plate; 206, grounding chain; 207, storage assembly; 2071, screw; 2072, rotating rod; 2073, column; 2074, winding roller; 208, threaded rod; 209, pressure plate; 210, threaded sleeve; 211, rubber ring; 212, notch. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present invention. The term "in one embodiment" that appears in different places in this specification does not necessarily refer to the same embodiment, nor does it refer to a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the embodiments of the present invention, for the sake of convenience, the cross-sectional diagrams showing the device structure will not be partially enlarged according to the general scale, and the schematic diagrams are only examples, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Reference Figure 1-Figure 6 , which is an embodiment of the utility model, provides a novel shielding device for measuring magnetic induction intensity, which includes: a main unit 100 and a shielding unit 200;

[0030] The main unit 100 includes a magnetic water meter connection body 101 and a water meter main body 102 installed on the magnetic water meter connection body 101;

[0031] The shielding unit 200 includes a shielding cover 1 201 and a shielding cover 202. The shielding cover 1 201 and the shielding cover 202 are detachably mounted on the outside of the magnetic water meter connecting body 101. A connecting block 203 is fixed to one side of the shielding cover 202. A threaded cylinder 204 is fixed to the connecting block 203. An annular plate 205 is sleeved on the outer side of the threaded cylinder 204. A grounding chain 206 is fixed on the annular plate 205. A threaded rod 208 is connected to the inner thread of the threaded cylinder 204. A pressure plate 209 is fixed to the top of the threaded rod 208. A storage component 207 for winding up the grounding chain 206 is provided on the shielding cover 202.

[0032] It should be noted that the grounding chain 206, the annular plate 205, the threaded cylinder 204, and the connecting block 203 are all made of metal materials with good electrical conductivity. The shielding cover 1 201 and the shielding cover 202 are both made of electromagnetic pure iron materials with good magnetic permeability and can effectively perform electrostatic shielding. The grounding chain 206 connects the ground with the shielding cover 1 201 and the shielding cover 202, so that the shielding cover 1 201 and the shielding cover 202 are grounded, which is convenient for introducing the concentrated charges on the shielding cover 1 201 and the shielding cover 202 into the ground, reducing the electrostatic charges and induced charges on the shielding cover 1 201 and the shielding cover 202. The shielding cover 1 201 and the shielding cover 202 are both semi-cylindrical structures. The cylindrical structure formed by the combination of the shielding cover 1 201 and the shielding cover 202 can form a cavity conductor, which is an equipotential body and effectively prevents the influence of the external electrostatic field on the inside of the cavity conductor.

[0033] In addition, the shielding cover 1 201 is provided with a mounting hole 103, and a plurality of side plates 104 are fixed to the shielding cover 1 201 and the shielding cover 2 202. The side plates 104 are provided with round holes 106, and bolts 105 are inserted into the round holes 106. The bolts 105 are threadedly connected with nuts 107. The diameter of the pressure plate 209 is larger than the diameter of the annular plate 205. The storage assembly 207 includes a screw rod 2071 fixed to the shielding cover 2 202, and one end of the screw rod 2071 is rotatably connected to the rotating rod 2 072, a column 2073 is fixed to one end of the rotating rod 2072 away from the screw rod 2071, and a winding roller 2074 for winding up the grounding chain 206 is fixed to one end of the column 2073 away from the rotating rod 2072, and a slot 212 is opened on the winding roller 2074, a rubber ring 211 is sleeved on the column 2073, and a threaded sleeve 210 is threadedly connected to the screw rod 2071, and the diameter of the threaded sleeve 210 is smaller than the diameter of the column 2073 and larger than the diameter of the rotating rod 2072.

[0034] When in use, first connect the water meter body 102 through the mounting hole 103 through the shielding cover 201 and the magnetic water meter connector 101, then adjust the length of the grounding chain 206, rotate the pressure plate 209 to drive the threaded rod 208 to rotate, then move the threaded rod 208 out of the threaded barrel 204, then move the annular plate 205 out of the threaded barrel 204, and then rotate the threaded sleeve 210 so that the threaded sleeve 210 no longer presses against the column 2073. When the annular plate 205 is removed from the threaded barrel 204, the length of the grounding chain 206 between the annular plate 205 and the winding roller 2074 is sufficient to allow the annular plate 205 to be sleeved on the threaded barrel 204. At this time, the grounding chain 206 of this section is embedded in the notch 212 from the notch 212, and then the extra grounding chain 206 is wrapped around the column 2073, and then the rubber ring 211 is sleeved on the rubber ring that has been wrapped around the column. 2073, so that part of the grounding chain 206 is tied to the column 2073. At this time, the winding roller 2074 can be rotated to wind or unwind the grounding chain 206 required for grounding. After the adjustment is completed, the threaded sleeve 210 is rotated in the opposite direction to make it abut against the column 2073, that is, the winding roller 2074 can no longer rotate, and then the rubber ring 211 is removed, and one end of the grounding chain 206 can be removed from the column 2073 and the annular plate 205 is sleeved on the threaded cylinder 204. By contacting the grounding chain 206 with the ground, the magnetic water meter connecting body 101 is partially connected to the water pipe, and the water flows horizontally through the magnetic water meter connecting body 101. There is a longitudinal magnetic field in the magnetic water meter connecting body 101. When the water flows through the magnetic field as a conductor, it will cut the magnetic field to generate an induced electromotive force, and the size of the generated induced electromotive force is reflected by the water meter to realize the measurement of water flow.

[0035] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A novel shielding device for measuring magnetic induction intensity, characterized in that: include: A main body unit (100) comprising a magnetic water meter connecting body (101) and a water meter main body (102) mounted on the magnetic water meter connecting body (101); The shielding unit (200) comprises a shielding cover 1 (201) and a shielding cover 2 (202), wherein the shielding cover 1 (201) and the shielding cover 2 (202) are detachably mounted on the outside of a magnetic water meter connecting body (101), a connecting block (203) is fixed on one side of the shielding cover 2 (202), a threaded barrel (204) is fixed on the connecting block (203), an annular plate (205) is sleeved on the outer side of the threaded barrel (204), a grounding chain (206) is fixed on the annular plate (205), a threaded rod (208) is connected to the inner thread of the threaded barrel (204), a pressure plate (209) is fixed on the top of the threaded rod (208), and a storage component (207) for rolling up the grounding chain (206) is provided on the shielding cover 2 (202).

2. A novel shielding device for measuring magnetic induction intensity according to claim 1, characterized in that: The shielding cover 1 (201) is provided with a mounting hole (103), and a plurality of side plates (104) are fixed on the shielding cover 1 (201) and the shielding cover 2 (202), and a circular hole (106) is provided in the side plate (104), and a bolt (105) is inserted into the circular hole (106), and a nut (107) is threadedly connected to the bolt (105).

3. A novel shielding device for measuring magnetic induction intensity according to claim 1, characterized in that: The diameter of the pressure plate (209) is greater than the diameter of the annular plate (205).

4. A novel shielding device for measuring magnetic induction intensity according to claim 1, characterized in that: The storage assembly (207) includes a screw (2071) fixed on the second shielding cover (202), one end of the screw (2071) is rotatably connected to a rotating rod (2072), one end of the rotating rod (2072) away from the screw (2071) is fixed with a column (2073), and one end of the column (2073) away from the rotating rod (2072) is fixed with a winding roller (2074) for winding up the grounding chain (206).

5. A novel shielding device for measuring magnetic induction intensity according to claim 4, characterized in that: The winding roller (2074) is provided with a notch (212), and the column (2073) is sleeved with a rubber ring (211).

6. A novel shielding device for measuring magnetic induction intensity according to claim 4, characterized in that: The screw rod (2071) is threadedly connected with a threaded sleeve (210), and the diameter of the threaded sleeve (210) is smaller than the diameter of the column (2073) and larger than the diameter of the rotating rod (2072).

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