Pointer structure of magnet differential pressure gauge

Abstract

The utility model discloses a pointer structure of a magnet differential pressure gauge, and belongs to the technical field of pressure measurement. The pointer structure of the magnet differential pressure gauge comprises a base body of the differential pressure gauge, the upper portion of the base body is provided with a marker shaft cabin, a first miniature bearing and a second miniature bearing are fixedly arranged in the marker shaft cabin, inner rings of the first miniature bearing and the second miniature bearing are fixedly provided with a marker shaft, and the ring surface of the marker shaft is fixedly provided with a marker shaft magnetic ring; according to the utility model, the miniature bearing is arranged on the mark shaft cabin, so that the mark shaft does not generate direct friction with the base body during rotation, and the friction force borne by the mark shaft is reduced by utilizing the miniature bearing, so that the smoothness of the mark shaft during rotation is improved, and the service life of the mark shaft is prolonged; therefore, the problem that the service life and the rotation effect are affected due to the fact that friction force between the pointer standard shaft and the shell of the differential pressure gauge in the prior art is large is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pressure measurement, in particular to a pointer structure of a magnetic differential pressure gauge. Background Art

[0002] Differential pressure gauges are mainly used in the process flow of chemical, brazing, metallurgy, electric power, nuclear power and other industrial sectors to measure the differential pressure, flow and other parameters of various liquid or gas media.

[0003] In the prior art, the standard axis of the pointer of the magnetic differential pressure gauge is rotatably connected to the base of the differential pressure gauge, that is, a hole is opened on the base, and the standard axis is rotatably set in the hole. When rotating, direct friction is generated between the standard axis and the shell, resulting in relatively unsmooth rotation of the standard axis. The long-term friction of the standard axis reduces the service life of the standard axis, so improvement is needed. Utility Model Content

[0004] The utility model aims to solve the problem that the friction between the pointer axis and the shell of the differential pressure gauge in the prior art greatly affects the service life and the rotation effect, and proposes a pointer structure of a magnetic differential pressure gauge.

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

[0006] A pointer structure of a magnetic differential pressure gauge comprises a base of the differential pressure gauge, wherein a standard axis cabin is provided on the upper part of the base, a first miniature bearing and a second miniature bearing are fixedly arranged in the standard axis cabin, a standard axis is fixedly arranged on the inner rings of the first miniature bearing and the second miniature bearing, and a standard axis magnetic ring is fixedly arranged on the annular surface of the standard axis.

[0007] Preferably, an inner sleeve is embedded in the inner end of the marking shaft chamber, the first micro-bearing is embedded in the end of the inner sleeve, an outer sleeve is embedded in the outer end of the marking shaft chamber, and the second micro-bearing is embedded in the outer end of the outer sleeve.

[0008] Preferably, it further comprises a dial, which is detachably connected to the front side of the base body, and one end of the scale axis close to the dial passes through the dial, and a pointer is fixedly arranged at the end.

[0009] Preferably, the dial is detachably connected to the base body by screws.

[0010] Preferably, the dial is provided with scales.

[0011] Compared with the prior art, the utility model provides a pointer structure of a magnetic differential pressure gauge, which has the following beneficial effects.

[0012] 1. The utility model provides a micro bearing on the standard shaft cabin, so that the standard shaft does not generate direct friction with the base when rotating, and utilizes the micro bearing to reduce the friction force on the standard shaft, thereby improving the smoothness of the standard shaft rotation and the life of the standard shaft, thereby solving the problem in the prior art that the friction between the pointer standard shaft and the housing of the differential pressure gauge is large and affects the life and rotation effect.

[0013] Other advantages, objectives and features of the present invention will be described in the following description to some extent; and will be apparent to those skilled in the art based on the following examination and study to some extent; or, may be taught from the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0015] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model.

[0016] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model.

[0017] In the figure:

[0018] 1. Base; 2. Standard axis; 3. Pointer; 4. Dial; 5. Low-pressure inlet; 6. High-pressure inlet; 7. Inner sleeve; 8. First miniature bearing; 9. Standard axis magnetic ring; 10. Standard axis cabin; 11. Second miniature bearing; 12. Outer sleeve; 13. Diaphragm; 14. Spring; 15. Gas cabin; 16. Cabin shaft; 17. Cabin magnetic ring. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0020] Reference Figure 1-3 A pointer structure of a magnetic differential pressure gauge includes a base 1 of the differential pressure gauge, a standard axis cabin 10 is opened on the upper part of the base 1, a first miniature bearing 8 and a second miniature bearing 11 are fixedly arranged in the standard axis cabin 10, a standard axis 2 is fixedly arranged on the inner ring of the first miniature bearing 8 and the second miniature bearing 11, and a standard axis magnetic ring 9 is fixedly arranged on the annular surface of the standard axis 2.

[0021] In a specific embodiment of the utility model, by arranging a micro bearing on the standard shaft cabin 10, the standard shaft 2 can avoid direct friction with the base 1 when rotating, and the micro bearing is used to reduce the friction force on the standard shaft 2, thereby improving the smoothness of the standard shaft 2 when rotating and increasing the life of the standard shaft 2;

[0022] It also includes a diaphragm 13, an inner chamber shaft 16, an inner chamber magnetic ring 17 and a spring 14. A gas chamber 15 is provided in the middle of the base 1. The diaphragm 13 is fixedly arranged in the gas chamber 15. The diaphragm 13 divides the gas chamber 15 into two chambers. A high-pressure inlet 6 is provided at the lower part of one chamber, and a low-pressure inlet 5 is provided at the lower part of the other chamber.

[0023] One end of the cabin shaft 16 is fixedly connected to the diaphragm 13, and the other end is slidably connected to the gas cabin 15. The cabin shaft 16 is located in a chamber connected to the high-pressure inlet 6. The cabin magnetic ring 17 is fixedly set on the cabin shaft 16. The cabin magnetic ring 17 is magnetically coupled with the standard axis magnetic ring 9. The spring 14 is set in another chamber. One end of the spring 14 is connected to the end wall of the other chamber, and the other end is connected to the end of the cabin shaft 16.

[0024] The inner end of the axis marking chamber 10 is embedded with an inner sleeve 7, the first micro bearing 8 is embedded in the end of the inner sleeve 7, the outer end of the axis marking chamber 10 is embedded with an outer sleeve 12, and the second micro bearing 11 is embedded in the outer end of the outer sleeve 12; the axis marking magnetic ring 9 is located between the first micro bearing 8 and the second micro bearing 11;

[0025] A groove adapted to the first miniature bearing 8 is formed at the end of the inner sleeve 7, and the groove faces the outer sleeve 12, and the first miniature bearing 8 is embedded in the groove; a groove adapted to the second miniature bearing 11 is formed at the outer end of the outer sleeve 12, and the second miniature bearing 11 is embedded in the groove.

[0026] It also includes a dial 4, which is detachably connected to the front side of the base 1. The end of the standard axis 2 close to the dial 4 passes through the dial 4, and a pointer 3 is fixedly arranged on the end; the dial 4 can support the outer sleeve 12 and limit the outer sleeve 12, so as to facilitate the disassembly of the standard axis 2 and its accessories.

[0027] The dial 4 is detachably connected to the base body 1 by screws.

[0028] The dial 4 is provided with scales.

[0029] Working process: the high-pressure gas to be tested is connected from the high-pressure inlet 6, and the low-pressure gas to be tested is connected from the low-pressure inlet 5. Then, after the high-pressure gas enters the chamber, the diaphragm 13 and the cabin shaft 16 are pushed by the air pressure to overcome the elastic force of the spring 14 and the pressure of the low-pressure gas to move. Then, the cabin magnetic ring 17 moves with the cabin shaft 16. Since the cabin magnetic ring 17 and the standard axis magnetic ring 9 are magnetically coupled, the cabin magnetic ring 17 drives the standard axis magnetic ring 9 to rotate, thereby driving the standard axis 2 to rotate, and finally realizing the swing of the pointer 3 to read the value.

[0030] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0031] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0032] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations of the present invention. Ordinary technicians in the field can change, modify, replace and modify the above embodiments within the scope of the present invention.

Claims

1. A pointer structure of a magnetic differential pressure gauge, comprising a base (1) of the differential pressure gauge, characterized in that: A shaft marking chamber (10) is provided at the upper portion of the base body (1), a first micro-bearing (8) and a second micro-bearing (11) are fixedly arranged in the shaft marking chamber (10), a shaft marking (2) is fixedly arranged on the inner rings of the first micro-bearing (8) and the second micro-bearing (11), and a shaft marking magnetic ring (9) is fixedly arranged on the annular surface of the shaft marking (2).

2. The pointer structure of a magnetic differential pressure gauge according to claim 1, characterized in that: An inner sleeve (7) is embedded in the inner end of the shaft marking chamber (10), the first miniature bearing (8) is embedded in the end of the inner sleeve (7), an outer sleeve (12) is embedded in the outer end of the shaft marking chamber (10), and the second miniature bearing (11) is embedded in the outer end of the outer sleeve (12).

3. The pointer structure of a magnetic differential pressure gauge according to claim 1, characterized in that: It also comprises a dial (4), which is detachably connected to the front side of the base (1); an end of the scale axis (2) close to the dial (4) passes through the dial (4), and a pointer (3) is fixedly arranged at the end.

4. The pointer structure of a magnetic differential pressure gauge according to claim 3, characterized in that: The dial (4) is detachably connected to the base (1) via screws.

5. The pointer structure of a magnetic differential pressure gauge according to claim 3, characterized in that: The dial (4) is provided with scales.

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