Tuning fork liquid level meter

Abstract

The utility model relates to the technical field of liquid level meters, in particular to a tuning fork liquid level meter which comprises a shell, a signal sensor and a tuning fork, the tuning fork comprises a fork body and a fork body connecting pipe in threaded connection with the shell, and a containing cavity used for containing the signal sensor is formed in the fork body connecting pipe. The signal sensor is installed on the shell, the bottom of the signal sensor abuts against the bottom of the containing cavity, the fork body connecting pipe can be directly detached from the shell, and the fork body connecting pipe has the advantage of being convenient to replace.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of liquid level meters, and in particular to a tuning fork liquid level meter BACKGROUND

[0002] As a kind of level detector based on vibration principle, tuning fork liquid level meter realizes the accurate measurement of liquid level or material level through the change of tuning fork resonant frequency, and has been widely used in chemical, food, energy and other industrial fields. The core component fork body is usually made of special alloy material to improve corrosion resistance (such as aluminum alloy containing nickel and titanium elements), and the surface plating (such as nickel plating) is used to enhance the anti-medium erosion ability.

[0003] In the prior art, the fork body and the instrument body are usually welded or integrally formed, such as extrusion forming by a compression mold or solid solution-quenching process to strengthen the connection strength. However, such fixed design has significant defects in practical application:

[0004] High maintenance cost: when the fork body needs to be replaced due to corrosion, mechanical damage or change of medium characteristics, the traditional structure needs to be disassembled as a whole, and even the welded points need to be destructively cut, resulting in long maintenance period and increased labor cost. Especially in the field of food, medicine and other strict hygiene requirements, frequent disassembly may cause cross contamination risk.

[0005] Insufficient adaptability: different working conditions require different materials of fork body, such as 316L stainless steel, coating corrosion resistance, etc. The fixed design is difficult to replace quickly, which limits the scene adaptability of the instrument. For example, heat-resistant alloy fork body is required in high temperature and high pressure environment, while conventional corrosion-resistant fork body cannot meet the requirements.

[0006] Therefore, it is urgent to develop a fork body liquid level meter with quick replacement, high sealing performance and structural stability, so as to reduce the maintenance cost, improve the environmental adaptability of the instrument, and ensure the measurement accuracy and reliability in long-term use. CONTENT OF THE INVENTION

[0007] In order to facilitate the replacement of the fork body, the present application provides a tuning fork liquid level meter.

[0008] The tuning fork liquid level meter provided by the present application adopts the following technical scheme:

[0009] A tuning fork liquid level meter, comprising a shell, a signal sensor and a tuning fork, the tuning fork comprising a fork body and a fork body connecting pipe threadedly connected with the shell, a containing cavity for accommodating the signal sensor is arranged in the fork body connecting pipe, and the signal sensor is mounted on the shell and the bottom of the signal sensor abuts against the bottom of the containing cavity.

[0010] In one embodiment: a connecting sleeve is slidably mounted on the housing, the connecting sleeve having a hexagonal nut-like shape, and the connecting sleeve being threadedly connected to the fork body connecting pipe.

[0011] In one embodiment, the housing is provided with a limiting member for restricting the connection sleeve on the housing.

[0012] In one embodiment: a connecting ring is provided on the inner side of the end where the housing is connected to the fork connecting pipe, and the limiting member is installed on the connecting ring by bolts.

[0013] In one embodiment, a sealing ring is provided between the connecting ring and the limiting member.

[0014] In one embodiment: one end of the signal sensor is threaded to a limiting member.

[0015] In one embodiment, a sealing ring is provided between the limiting member and the connecting pipe of the fork body.

[0016] In one embodiment: the limiting member is provided with a positioning post, and the end of the fork connecting tube is provided with a positioning hole that cooperates with the positioning post.

[0017] In one embodiment: a hexagonal force-applying part is integrally provided on the fork connecting pipe, and an external thread section is provided on the outer wall of the fork connecting pipe between the force-applying part and the fork body.

[0018] In summary, this application has the following beneficial effects:

[0019] The signal sensor is installed on the housing, and the fork connecting tube is connected to the housing. After the fork connecting tube is installed, the bottom of the signal sensor is in contact with the bottom of the receiving cavity to ensure that the signal sensor can function properly. This makes it easy to replace the tuning fork without having to disassemble the connection between the tuning fork and the signal sensor. Attached Figure Description

[0020] Figure 1 This is a structural schematic diagram of this embodiment;

[0021] Figure 2 This is an internal structure diagram of this embodiment;

[0022] Figure 3 This is in this embodiment Figure 2 Enlarged view of part A;

[0023] Figure 4 This is an exploded view of this embodiment.

[0024] In the diagram, 100 is the housing; 110 is the connecting part; 120 is the connecting ring; 200 is the tuning fork; 210 is the fork body; 220 is the fork body connecting pipe; 221 is the positioning hole; 222 is the force-applying part; 223 is the external thread section; 300 is the signal sensor; 400 is the cover; 410 is the rubber ring; 500 is the material level controller; 600 is the connecting sleeve; 700 is the limiting component; 710 is the through hole; 720 is the positioning pin; 800 is the sealing ring; and 900 is the sealing ring. Detailed Implementation

[0025] To further illustrate the technical means and effects adopted by this utility model in order to achieve the intended utility model purpose, the following detailed description of the specific implementation methods, structure, features and effects of this utility model is provided in conjunction with the accompanying drawings and preferred embodiments.

[0026] In the description of this application, it should be understood that the terms "upper", "lower", "left", "right", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0027] A tuning fork level gauge, such as Figure 1 and Figure 2 As shown, the device includes a housing 100, a signal sensor 300, and a tuning fork 200. The housing 100 is cylindrical and hollow inside. A material level controller 500 is installed inside the housing 100. An opening is provided at the top, and a cover 400 is installed at the opening. In this embodiment, the cover 400 is threadedly connected to the housing 100, making it easy to remove the cover 400.

[0028] To ensure a tight seal, a rubber ring 410 is provided between the cover 400 and the housing 100.

[0029] A connecting part 110 is provided at the lower part of the housing 100. The diameter of the connecting part 110 is smaller than that of the housing 100. The connecting part 110 is hollow inside and communicates with the inside of the housing 100.

[0030] like Figure 3 and Figure 4 As shown, a connecting sleeve 600 and a limiting member 700 for limiting the connecting sleeve 600 on the housing 100 are slidably mounted on the connecting part 110. The connecting sleeve 600 has a hexagonal nut structure.

[0031] A connecting ring 120 is provided on the inner side of one end of the housing 100 connected to the fork connecting pipe 220. The limiting member 700 is fixedly installed on the connecting ring 120 by multiple bolts. The end of the limiting member 700 connected to the connecting ring 120 protrudes and inserts into the connecting part 110. A sealing ring 900 is provided between the connecting ring 120 and the limiting member 700. The connecting bolt between the limiting member 700 and the connecting ring 120 passes through the sealing ring 900. After the threaded connection between the limiting member 700 and the connecting ring 120 is completed, the limiting member 700 and the connecting ring 120 press the sealing ring 900 between them tightly, and at this time, the limiting member 700 abuts against the end of the connecting part 110.

[0032] In order to restrict the connecting sleeve 600, the outer diameter of the limiting member 700 is larger than that of the connecting part 110. Thus, after the connecting sleeve 600 is first put onto the connecting part 110, the limiting member 700 is then installed, which can restrict the connecting sleeve 600 axially. In fact, it can slide freely on the connecting part 110 without separating from the connecting part 110.

[0033] One end of the signal sensor 300 is threaded to the limiting member 700. In order to facilitate the electrical connection between the signal sensor 300 and the material level controller 500, the limiting member 700 is provided with a through hole 710 for the power supply line to pass through.

[0034] The tuning fork 200 includes a fork body 210 and a fork body connecting tube 220 threadedly connected to the housing 100. A connecting sleeve 600 is threadedly connected to the fork body connecting tube 220. The fork body connecting tube 220 has a receiving cavity for housing a signal sensor 300. When the connecting sleeve 600 is connected to the fork body connecting tube 220, the signal sensor 300 is located in the receiving cavity, and the bottom of the signal sensor 300 abuts against the bottom of the receiving cavity.

[0035] In addition, a sealing ring 800 is provided between the limiting member 700 and the fork body connecting tube 220. The sealing ring 800 can seal the connection position between the limiting member 700 and the fork body connecting tube 220, and provide elastic force to ensure that the bottom of the signal sensor 300 can be tightly pressed against the bottom of the accommodating cavity.

[0036] Meanwhile, in order to ensure that there is no relative displacement between the fork body connecting pipe 220 and the connecting part 110, a positioning post 720 is provided on the limiting member 700. The end of the fork body connecting pipe 220 is provided with a positioning hole 221 that cooperates with the positioning post 720. The positioning post 720 passes through the sealing ring 800 and is inserted into the positioning hole 221 to prevent relative movement between the fork body connecting pipe 220 and the connecting part 110 during installation and other situations, which would cause the threaded connection between the connecting sleeve 600 and the fork body connecting pipe 220 to loosen.

[0037] To facilitate the installation of the tuning fork 200 level gauge, a hexagonal force-applying part 222 is integrally provided on the fork body connecting pipe 220. An external thread section 223 is provided on the outer wall of the fork body connecting pipe 220 between the force-applying part 222 and the fork body 210. The tuning fork 200 level gauge is connected to the device to which it is to be installed via the external thread section 223, or it is installed by threading a flange onto the external thread section 223. The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model in any way. Although this utility model has been disclosed above with reference to a preferred embodiment, it is not intended to limit the utility model. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the utility model's technical solution. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model without departing from the scope of the utility model's technical solution shall still fall within the scope of the utility model's technical solution.

Claims

1. A tuning fork level gauge, characterized in that: The device includes a housing (100), a signal sensor (300), and a tuning fork (200). The tuning fork (200) includes a fork body (210) and a fork body connecting tube (220) threadedly connected to the housing (100). The fork body connecting tube (220) has a receiving cavity for receiving the signal sensor (300). The signal sensor (300) is installed on the housing (100), and the bottom of the signal sensor (300) abuts against the bottom of the receiving cavity.

2. The tuning fork (200) level gauge according to claim 1, characterized in that: A connecting sleeve (600) is slidably installed on the housing (100). The connecting sleeve (600) has a hexagonal nut structure and is threadedly connected to the fork connecting tube (220).

3. The tuning fork (200) level gauge according to claim 2, characterized in that: The housing (100) is provided with a limiting member (700) for limiting the connecting sleeve (600) on the housing (100).

4. The tuning fork (200) level gauge according to claim 3, characterized in that: A connecting ring (120) is provided on the inner side of the end where the housing (100) is connected to the fork connecting pipe (220), and the limiting member (700) is installed on the connecting ring (120) by bolts.

5. The tuning fork (200) level gauge according to claim 4, characterized in that: A sealing ring (900) is provided between the connecting ring (120) and the limiting member (700).

6. The tuning fork (200) level gauge according to claim 4, characterized in that: One end of the signal sensor (300) is threaded to the limiting member (700).

7. The tuning fork (200) level gauge according to claim 6, characterized in that: A sealing ring (800) is provided between the limiting member (700) and the fork connecting pipe (220).

8. The tuning fork (200) level gauge according to claim 4, characterized in that: The limiting member (700) is provided with a positioning post (720), and the end of the fork connecting tube (220) is provided with a positioning hole (221) that cooperates with the positioning post (720).

9. The tuning fork (200) level gauge according to claim 2, characterized in that: The fork connecting pipe (220) is integrally provided with a force-applying part (222) in a hexagonal structure, and the outer side wall of the fork connecting pipe (220) between the force-applying part (222) and the fork (210) is provided with an external thread section (223).

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