Liquid level thermometer

Abstract

The utility model provides a liquid level thermometer, which comprises a shell, a hollow cavity shell, a gland and a thermometer, the gland is used for connecting the shell and the cavity shell, the thermometer is arranged in the cavity shell, the gland is made of aluminum alloy, the gland is inserted on the shell, a convex part and a hole part are arranged on the gland, the convex part is inserted on the cavity shell, and the hole part is arranged on the cavity shell. And a first sealing ring is arranged between the convex part and the cavity shell, and a bolt for positioning the hole part and the shell is arranged on the hole part in a penetrating manner. Aiming at the defects in the prior art, the utility model provides the liquid level thermometer which is higher in connection strength and better in stability. Aiming at the defects in the prior art, the utility model provides the liquid level thermometer which is higher in connection strength and better in stability.

Description

Technical Field

[0001] The utility model relates to a liquid level thermometer. Background Art

[0002] A liquid level thermometer is a device used to measure the liquid level and liquid temperature in a high-temperature and high-pressure liquid container. It is commonly used in components such as oil tanks, cooling boxes, and gear boxes. The liquid level thermometer usually includes an outer shell, a cavity shell, a gland, and a thermometer. The cavity shell is made of a transparent material and is hollow. The thermometer is arranged in the cavity shell. The gland is connected to both ends of the cavity shell and is connected to the outer shell by bolts. The outer shell is provided with a window for the thermometer in the cavity shell to appear. However, the liquid level thermometer in the prior art has a gland that is often made of plastic material. The connection between the cavity shell and the outer shell is formed by the gland, and it also relies on bolts connected to the gland to fix it to external devices. It is easy for the gland to become loose and affect the measurement or damage due to insufficient strength of the gland. Utility Model Content

[0003] In view of the deficiencies in the prior art, the utility model provides a liquid level thermometer with higher connection strength and better stability.

[0004] To achieve the above-mentioned purpose, the utility model provides a liquid level thermometer, comprising an outer shell, a hollow cavity shell, a pressure cover connecting the outer shell and the cavity shell, and a thermometer arranged in the cavity shell, the pressure cover is made of aluminum alloy, the pressure cover is inserted into the outer shell, and a convex portion and a hole portion are arranged on the pressure cover, the convex portion is inserted into the cavity shell, and a first sealing ring is arranged between the convex portion and the cavity shell, and the hole portion is penetrated by bolts that constitute its positioning with the outer shell.

[0005] The advantages of adopting the above technical solution are: the gland forming the connection between the outer shell and the cavity shell is set to be made of aluminum alloy, the gland is inserted into the outer shell, and its convex part is inserted into the cavity shell, and then a first sealing ring is arranged between the convex part and the cavity shell to ensure the sealing while improving the connection strength, and finally, bolts are passed through the outer shell and the hole to form a connection between the outer shell and the gland. The gland made of aluminum alloy has higher strength and is not easy to be damaged, thereby ensuring the connection strength and stability of the product.

[0006] The utility model can be further configured as follows: one end of the gland is attached to the outer shell, an annular groove is arranged around the hole at the end surface of the other end of the gland, a second sealing ring extending into the annular groove and a metal ring sheet abutting between the second sealing ring and the bolt are sleeved on the bolt, and the thickness of the second sealing ring is greater than the height of the annular groove.

[0007] By further setting, an annular groove is set around the hole at the end face of the other end of the gland, and then the second sealing ring and the metal ring sheet are mounted on the bolt, so that the second sealing ring enters the annular groove and is covered by the metal ring sheet to better protect the second sealing ring, avoid the second sealing ring from being affected by the outside and failing prematurely, and ensure the service life of the product. The thickness of the second sealing ring is set to be greater than the height of the annular groove, so that the sealing ring can be interference-pressed in the annular groove after the bolt is fixed, thereby ensuring the sealing effect.

[0008] The utility model can be further configured as follows: an extension portion is provided at the inner hole of the second sealing ring, a recess is provided at one end of the threaded section of the bolt facing the cap portion, and the recess is provided corresponding to the extension portion.

[0009] Through further configuration, an extension portion is provided at the inner hole of the second sealing ring, and a recess is provided at one end of the threaded section of the bolt facing its cap portion. Even if the second extension portion of the second sealing ring is fitted thereon, the sealing effect will be affected by the thread pattern of the bolt. Therefore, the extension portion of the second sealing ring cooperates with the recessed portion of the bolt to form a seal, thereby ensuring a better sealing effect.

[0010] The utility model can be further configured as follows: an inclined annular surface is arranged around the hole at one end of the gland, and a third sealing ring is arranged between the inclined annular surface and the housing.

[0011] By further arranging an inclined annular surface around the hole at one end of the gland, and arranging a third sealing ring between the inclined annular surface and the housing, the sealing effect can be further enhanced.

[0012] The utility model can be further configured as follows: a protective gasket is sleeved on the bolt, and the protective gasket abuts between the bolt cap and the shell.

[0013] By further arranging a protective gasket between the bolt cap and the housing, on the one hand, a better sealing effect can be ensured, and on the other hand, damage to the contact part between the bolt cap and the housing can be avoided.

[0014] The utility model can be further configured as follows: a protective shell is sleeved at the end where the threaded section of the bolt is located.

[0015] Through further configuration, a protective shell is mounted on the end of the threaded section of the bolt, which can provide protection for the thread of the bolt to avoid damage or dirt adhesion, and facilitate transportation and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0017] Figure 2It is a front view of an embodiment of the utility model;

[0018] Figure 3 It is a schematic diagram of the internal structure of an embodiment of the utility model;

[0019] Figure 4 For the utility model embodiment Figure 3 Enlarged view of part a;

[0020] Figure 5 For the utility model embodiment Figure 3 Enlarged view of part b;

[0021] Among them: outer shell 1; cavity shell 2; pressure cover 3; convex part 31; hole part 32; annular groove 33; inclined annular surface 34; first sealing ring 4; bolt 5; recess 51; protective gasket 52; second sealing ring 6; extension part 61; metal ring piece 7; third sealing ring 8; protective shell 9. DETAILED DESCRIPTION

[0022] The utility model is a liquid level thermometer. Figure 1-5 As shown: it includes an outer shell 1, a hollow cavity shell 2, a pressure cover 3 connecting the outer shell 1 and the cavity shell 2, and a thermometer arranged in the cavity shell, the pressure cover 3 is made of aluminum alloy. In this embodiment, the outer shell 1 is also made of aluminum alloy, and the cavity shell 2 is made of transparent plastic. The pressure cover 3 is inserted into the outer shell 1, and a convex portion 31 and a hole portion 32 are provided on the pressure cover 3. The convex portion 31 is inserted into the cavity shell 2, and a first sealing ring 4 is provided between the convex portion 31 and the cavity shell 2, and a bolt 5 for positioning it with the outer shell 1 is passed through the hole portion 32.

[0023] One end of the gland 3 is attached to the housing 1, and an annular groove 33 is provided at the end surface of the other end of the gland 3 around the hole 32. The bolt 5 is sleeved with a second sealing ring 6 extending into the annular groove and a metal ring sheet 7 abutting between the second sealing ring 6 and the bolt 5, and the thickness of the second sealing ring 6 is greater than the height of the annular groove 33.

[0024] An extension portion 61 is provided at the inner hole of the second sealing ring 6 , and a recess 51 is provided at one end of the threaded section of the bolt 5 facing the cap portion thereof, and the recess 51 is provided corresponding to the extension portion 61 .

[0025] An inclined annular surface 34 is arranged around the hole at one end of the gland 3 , and a third sealing ring 8 is arranged between the inclined annular surface 34 and the housing 1 .

[0026] The bolt 5 is sleeved with a protective gasket 52 , and the protective gasket 52 abuts between the cap of the bolt 5 and the housing 1 .

[0027] A protective shell 9 is mounted on the end of the threaded section of the bolt 5 .

[0028] The above example is only one preferred specific example of the present invention. The common changes and substitutions made by those skilled in the art within the technical solution of the present invention are all included in the protection scope of the present invention.

Claims

1. A liquid level thermometer, comprising an outer shell, a hollow cavity shell, a gland connecting the outer shell and the cavity shell, and a thermometer disposed in the cavity shell, characterized in that: The pressure cover is made of aluminum alloy, is inserted into the outer shell, and is provided with a convex portion and a hole portion. The convex portion is inserted into the cavity shell, and a first sealing ring is provided between the convex portion and the cavity shell. The hole portion is penetrated by bolts for positioning it with the outer shell.

2. The liquid level thermometer according to claim 1, characterized in that: One end of the gland is attached to the outer shell, and a ring groove is arranged around the hole at the end face of the other end of the gland. The bolt is sleeved with a second sealing ring extending into the ring groove and a metal ring sheet abutting between the second sealing ring and the bolt, and the thickness of the second sealing ring is greater than the height of the ring groove.

3. The liquid level thermometer according to claim 2, characterized in that: An extension portion is arranged at the inner hole of the second sealing ring, and a recess is arranged at one end of the threaded section of the bolt facing the cap portion, and the recess is arranged corresponding to the extension portion.

4. The liquid level thermometer according to claim 1 or 2, characterized in that: An inclined annular surface is arranged around the hole at one end of the gland, and a third sealing ring is arranged between the inclined annular surface and the outer shell.

5. The liquid level thermometer according to claim 4, characterized in that: A protective gasket is sleeved on the bolt, and the protective gasket abuts between the bolt cap and the shell.

6. The liquid level thermometer according to claim 5, characterized in that: A protective shell is sleeved on the end of the threaded section of the bolt.

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