CN211148793U

CN211148793U - Anti-creeping electrometer

Info

Publication number: CN211148793U
Application number: CN201921711076.XU
Authority: CN
Inventors: 徐忠岳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-10-14
Filing date: 2019-10-14
Publication date: 2020-07-31
Anticipated expiration: 2029-10-14

Abstract

The utility model discloses a anticreep electrometer has solved the electrometer and can make the success rate of experiment diminish problem when meeting overcast and rainy day or the great teaching environment of the more relative humidity of dust. The method is characterized in that: well core rod and pointer are installed to the casing, well core rod is equipped with insulating sealing ring, the circumference coating of casing has the sealing material, insulating sealing ring includes a ring and No. two rings of threaded connection, the bottom surface of a ring is laminated with the outer wall of casing, the top surface of No. two rings is laminated with the inner wall of casing. The inside airtight space that becomes of messenger's casing is in relative dry state, has stopped the electric leakage, can normally demonstrate in overcast and rainy day or the great teaching environment of the more relative humidity of dust, and the stable performance moreover.

Description

Anti-creeping electrometer

Technical Field

The utility model relates to a physics experiment instrument field, concretely relates to anticreep electrometer.

Background

The electrometer is a necessary and common demonstration instrument in middle school physics class, but can be out of order because of electric leakage when using, and when meeting overcast and rainy day or the teaching environment that the relative humidity is great more to the dust, the electric leakage is serious, and the success rate of experiment diminishes.

SUMMERY OF THE UTILITY MODEL

For solving the problem that the success rate that can make the experiment diminishes when meeting overcast and rainy day or the great teaching environment of the more relative humidity of dust of electrometer, the utility model provides a anticreep electrometer.

The utility model adopts the technical scheme as follows:

the novel sealing device comprises a housin, well core rod and pointer are installed to the casing, well core rod is equipped with insulating sealing ring, the circumference coating of casing has the sealing material, insulating sealing ring includes a ring and No. two rings of threaded connection, the bottom surface of a ring is laminated with the outer wall of casing, the top surface of No. two rings is laminated with the inner wall of casing.

The insulating sealing ring is made of polytetrafluoroethylene.

And a drying agent is placed in the shell.

The drying agent is a color-changing silica gel drying agent.

One side of the shell is provided with a through hole, and the outer side of the through hole is covered with a sealing insulating material.

The pointer and the tip of the center rod are coated with an insulating material.

The insulating material is paraffin.

And the inner wall and the outer wall of the shell are coated with insulating paint.

The utility model has the advantages that:

the inside airtight space that becomes of messenger's casing is in relative dry state, has stopped the electric leakage, can normally demonstrate in overcast and rainy day or the great teaching environment of the more relative humidity of dust, and the stable performance moreover.

Drawings

Fig. 1 is a schematic diagram of the present invention.

Fig. 2 is a schematic sectional view of the insulating sealing ring of the present invention.

The device comprises a shell 1, a central rod 2, a pointer 3, an insulating sealing ring 4, a first ring 41, a second ring 42, a sealing material 5, a drying agent 6, a through hole 7, a sealing insulating material 8, an insulating material 9 and an insulating paint 10.

Detailed Description

The invention will be further explained with reference to the following embodiments and drawings:

in an embodiment, as shown in fig. 1 and 2, the anti-creeping electrometer includes a casing 1, the casing 1 is provided with a central rod 2 and a pointer 3, the central rod 2 is provided with an insulating sealing ring 4, the casing 1 is coated with a sealing material 5 in the circumferential direction, the insulating sealing ring 4 includes a first ring 41 and a second ring 42 which are connected by a screw thread, the bottom surface of the first ring 41 is attached to the outer wall of the casing 1, and the top surface of the second ring 42 is attached to the inner wall of the casing 1. A ring 41 is equipped with the screw thread section, and sealing material 5 can be for sealed glue for guarantee the leakproofness of 1 circumference of casing, set up insulating seal ring 4 at well core rod 2 simultaneously and make 1 inside airtight spaces that become of casing, be in the relative dry state, stopped the electric leakage, can be in the overcast and rainy day or the great teaching environment of the more relative humidity of dust normal demonstration, moreover stable performance.

In an embodiment, the material of the insulating seal ring 4 is polytetrafluoroethylene. The polytetrafluoroethylene has the advantages of stable performance, minimum surface tension, extremely poor adhesiveness and good moisture-proof and dust-proof functions.

In an embodiment, as shown in fig. 1, a desiccant 6 is placed in the housing 1; the drying agent 6 is a allochroic silica gel drying agent. The drying agent is used for keeping the interior of the shell 1 in a dry environment, and whether the drying agent is invalid or not can be judged by observing the color of the allochroic silica gel drying agent so as to replace the drying agent in time and judge the sealing condition of the shell 1.

In the embodiment, as shown in fig. 1, one side of the housing 1 is provided with a through hole 7, and the outside of the through hole 7 is covered with a sealing insulating material 8. The sealing insulating material 8 can be an electrical tape, and the electrical tape drying agent 6 can be simply and conveniently taken out of the through hole 7 when opened.

In the embodiment, as shown in fig. 1, the pointer 3 and the tip of the central rod 2 are coated with an insulating material 9, and the insulating material 9 is paraffin. The power supply device can prevent the power leakage phenomenon caused by the discharge of the tips of the pointer 3 and the center rod 2 from influencing the experiment.

In the embodiment, as shown in fig. 1, the inner and outer walls of the case 1 are coated with an insulating coating 10. The insulating paint 10 is insulating paint, so that the shell 1 is not electrified, electricity is not easy to leak in the shell 1, and the true power of the experiment is ensured.

It is obvious that the above embodiments of the present invention are only examples for illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. There is no need or no way to give poor examples of all embodiments. And that such obvious changes and modifications are within the scope of the present invention as defined by the appended claims.

Claims

1. Anticreep electrometer, its characterized in that: including casing (1), well core rod (2) and pointer (3) are installed in casing (1), well core rod (2) are equipped with insulating sealing ring (4), the circumference coating of casing (1) has sealing material (5), insulating sealing ring (4) include a ring (41) and No. two rings (42) of threaded connection, the bottom surface of a ring (41) and the outer wall laminating of casing (1), the top surface of No. two rings (42) and the inner wall laminating of casing (1).

2. An anti-creeping electrometer according to claim 1, further comprising: the insulating sealing ring (4) is made of polytetrafluoroethylene.

3. An anti-creeping electrometer according to claim 1, further comprising: the drying agent (6) is placed in the shell (1).

4. An anti-creeping electrometer according to claim 3, further comprising: the drying agent (6) is a allochroic silica gel drying agent.

5. An anti-creeping electrometer according to claim 1, further comprising: one side of the shell (1) is provided with a through hole (7), and the outer side of the through hole (7) is covered with a sealing insulating material (8).

6. An anti-creeping electrometer according to claim 1, further comprising: the pointer (3) and the tip of the central rod (2) are coated with an insulating material (9).

7. An anti-creeping electrometer according to claim 6, further comprising: the insulating material (9) is paraffin.

8. An anti-creeping electrometer according to claim 1, further comprising: the inner wall and the outer wall of the shell (1) are coated with insulating paint (10).