Liquid level measuring device for rinsing tank of acid flat production line

Abstract

The utility model discloses a liquid level measuring device for a rinsing tank of an acid flat production line, which belongs to the field of liquid level measurement and comprises a transverse pipe and a vertical pipe. The vertical pipe comprises an outer pipe and an inner pipe of which pipe cavities are not communicated; a magnetostrictive displacement sensor is arranged in the inner pipe, and a magnetic floating ring is sleeved outside the inner pipe; the two ends of the transverse pipe are connected with the rinsing tank and the vertical pipe; an inclined filter screen is arranged in the rinsing tank at the inner opening of the transverse pipe; and the transverse pipe comprises a high-path parallel pipe and a low-path parallel pipe which are parallel to each other. Compared with the prior art, the device has the characteristics of blocking prevention and durability.

Description

Technical Field

[0001] The utility model relates to a measuring device, in particular to a measuring device suitable for measuring the liquid level of a rinsing tank in an acid level production line. Background Art

[0002] The rinsing tank of the acid leveling production line is connected to the acid tank. After the strip is cleaned of surface oxide scale in the acid tank, it needs to pass through the rinsing tank to clean the residual acid on the surface. The rinsing water in the rinsing process needs to be replenished at any time according to the liquid level. At the same time, if the rinsing water is excessive, it will also increase the workload of the subsequent squeeze roller.

[0003] The existing rinsing water level is mostly measured by a capillary differential pressure transmitter, which has a structure of two flange-type pressure sensors with sealing diaphragms installed on the side of the rinsing tank. The two are connected to the differential pressure transmitter through a capillary. The diaphragm of the pressure sensor produces a slight deformation after being compressed, and the deformation displacement is transmitted to the transmitter through the liquid in the capillary. Then, the liquid level data can be calculated based on the pressure difference between the two flanges. Since the rinsing water contains acid, the pressure sensor is easily corroded by long-term contact with the acid-containing rinsing water, resulting in sensor damage, which generally causes liquid level failure within half a year and has high replacement costs.

[0004] For the connected float level gauge, due to the cleaning of residual acid in the rinsing process, some iron oxide scale and iron filings on the surface of the strip will fall into the rinsing tank during rinsing. At the same time, the film dropped by the worn-out roller will also fall into the rinsing tank. These impurities enter the level gauge through the connecting pipe of the float level gauge, which is prone to jamming and congestion.

[0005] Therefore, there is an urgent need for a liquid level measuring device for the rinse tank of an acid level production line that is not prone to jamming and congestion and is long-lasting and durable. Utility Model Content

[0006] The technical task of the utility model is to provide a device for measuring the liquid level of a rinsing tank in an acid level production line in view of the above-mentioned deficiencies in the prior art, so as to solve the problem of low life of the existing rinsing tank liquid level detection.

[0007] The utility model solves the technical problem with a technical solution of: a device for measuring the liquid level of a rinsing tank in an acid level production line, characterized in that: it comprises a horizontal pipe and a vertical pipe;

[0008] The vertical tube includes an outer tube and an inner tube. The outer tube is connected to the outer end of the horizontal tube. The inner tube is located inside the outer tube. The inner tube cavity is not connected to the outer tube cavity. A magnetic displacement sensor is arranged in the inner tube cavity. The inner tube is covered with a magnetic floating ring.

[0009] The two ends of the horizontal pipe are connected to the rinsing tank and the vertical pipe; the connection position of the horizontal pipe is at the lower part of the rinsing tank, and the rinsing tank at the inner mouth of the horizontal pipe is provided with an inclined filter screen, the upper end of the inclined filter screen is connected to the side wall of the rinsing tank, and the lower end is connected to the bottom of the rinsing tank; the horizontal pipe includes parallel high-path parallel pipes and low-path parallel pipes.

[0010] Furthermore, the magnetic floating ring has an annular top plate.

[0011] Furthermore, both ends of the horizontal pipe are connected to the rinsing tank and the vertical pipe through flanges.

[0012] Furthermore, the rinsing tank below the inclined filter screen has a chip discharge port.

[0013] Furthermore, the high-path parallel pipe is lower than the inlet and outlet heights at both ends of the horizontal pipe.

[0014] Furthermore, the bottom of the low-path parallel pipe is provided with a slag cleaning port.

[0015] The optimization scheme also includes an upper transverse pipe, and both ends of the upper transverse pipe are respectively connected to the outer pipe and the rinsing tank.

[0016] Furthermore, a filter screen is provided at the connection between the inner opening of the upper horizontal pipe and the rinsing tank.

[0017] Compared with the prior art, the utility model has the following outstanding beneficial effects:

[0018] 1. The utility model no longer relies on differential pressure transmission to judge the liquid level, thus eliminating the shortcoming of the existing liquid level measuring device having a short service life;

[0019] 2. Prevent impurity congestion and magnetic interference, and reduce the probability of liquid level failure;

[0020] 3. Simple structure, easy maintenance and promotion. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments of the specification. In the following, only certain exemplary embodiments are briefly described. As those skilled in the art will appreciate, the described embodiments may be modified in various ways without departing from the spirit or scope of the embodiments of the present invention. Therefore, the drawings and descriptions are considered to be exemplary and non-restrictive in nature.

[0023] In the following embodiments, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection, an electrical connection, or a communication; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the embodiments of the present utility model application can be understood according to the specific circumstances.

[0024] In order to better describe the Figure 1 It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential", "end", "side" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the utility model application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the embodiments of the utility model application.

[0025] like Figure 1 As shown, the utility model includes a transverse pipe 7 and a vertical pipe.

[0026] In Example 1, the vertical tube includes an outer tube 1 and an inner tube 2. The outer tube 1 is connected to the outer end of the horizontal tube 7. The inner tube 2 is located inside the outer tube 1, and the inner tube 2 cavity is not connected to the outer tube 1 cavity. A magnetostrictive displacement sensor 3 is provided in the cavity of the inner tube 2, and a magnetic floating ring 4 is provided on the outer sleeve of the inner tube 2. The two cooperate to realize the displacement judgment of the position of the magnetic floating ring 4 to judge the liquid level. In this embodiment, the diameter of the outer tube 1 is 100 mm, and the diameter of the inner tube 2 is 40 mm. In the optimization scheme, the magnetic floating ring 4 has an annular top plate to increase the buoyancy. Because the acidic liquid does not enter the cavity of the inner tube 2 and does not contact the magnetostrictive displacement sensor 3, it has a long service life. The magnetostrictive displacement sensor and the magnetic floating ring are prior art and will not be described here.

[0027] The two ends of the transverse pipe 7 are connected to the rinsing tank and the vertical pipe through flanges. The connection position of the transverse pipe 7 is at the lower part of the rinsing tank. The rinsing tank at the inner opening of the transverse pipe 7 is provided with an inclined filter screen 8, the upper end of the inclined filter screen 8 is connected to the side wall of the rinsing tank, and the lower end is connected to the bottom of the rinsing tank. In this embodiment, the mesh size of the filter screen is 2mm. In the optimization scheme, the rinsing tank below the inclined filter screen 8 has a chip discharge port.

[0028] However, since there may be iron filings and the like in the acidic liquid that may affect the magnetism of the magnetic floating ring 4 and even cause adsorption, the horizontal tube 7 is a two-way parallel tube, including a parallel high-way parallel tube 9 and a low-way parallel tube 11; it is in a "twenty" shape, and the high-way parallel tube is lower than the height of the inlet and outlet at both ends of the horizontal tube 7. When the liquid in the rinsing tank enters the inner opening of the horizontal tube 7, as the gravity moves downward, impurities such as iron filings will be deposited and fall into the low-way parallel tube 11. The impurities in the high-way parallel tube 9 are extremely low, and secondary deposition will occur in the process of entering the outer opening of the horizontal tube 7. In the optimized solution, there is a slag removal port 10 at the bottom of the low-way parallel tube 11. The iron filings content in the liquid entering the outer tube 1 is reduced in the above manner to reduce interference with the magnetostrictive displacement sensor 3.

[0029] Embodiment 2, on the basis of embodiment 1, an upper transverse tube 5 is added. The two ends of the upper transverse tube 5 are connected to the outer tube 1 and the rinsing tank respectively. In the optimization scheme, the lower edge of the inner opening of the upper transverse tube 5 is not lower than the minimum safe water level set for the rinsing tank. There is a filter screen 6 at the connection between the inner opening of the upper transverse tube 5 and the rinsing tank. Since the upper transverse tube 5 is located at a relatively high position, it is not easy for iron filings and other impurities to enter at this time. The filter screen 6 is used to block light impurities, such as film dropped by the wear of the squeeze roller. In this embodiment, the mesh of the filter screen 6 is 2mm.

[0030] It should be noted that matters not described in detail in this embodiment are well-known technologies in the art.

[0031] The above description is only for the purpose of describing the present invention in detail for the specific implementation purpose of the present invention. For those skilled in the art, various obvious changes made to the present invention without departing from the spirit and scope of the present invention are within the protection scope of the present invention.

Claims

1. A device for measuring the liquid level of a rinsing tank in an acid level production line, characterized in that: Including horizontal pipes and vertical pipes; The vertical tube comprises an outer tube and an inner tube, the outer tube is connected to the outer end of the horizontal tube, the inner tube is located inside the outer tube, and the inner tube cavity is not connected to the outer tube cavity; a magnetic displacement sensor is arranged in the inner tube cavity, and a magnetic floating ring is arranged on the inner tube outer shell; The two ends of the horizontal pipe are connected to the rinsing tank and the vertical pipe; the connection position of the horizontal pipe is at the lower part of the rinsing tank, and the rinsing tank at the inner mouth of the horizontal pipe is provided with an inclined filter screen, the upper end of the inclined filter screen is connected to the side wall of the rinsing tank, and the lower end is connected to the bottom of the rinsing tank; the horizontal pipe includes parallel high-path parallel pipes and low-path parallel pipes.

2. The device for measuring the liquid level of the rinsing tank of the acid level production line according to claim 1 is characterized in that: The magnetic floating ring has an annular top sheet.

3. The device for measuring the liquid level of the rinsing tank of the acid level production line according to claim 1 is characterized in that: The two ends of the horizontal pipe are connected with the rinsing tank and the vertical pipe through flanges.

4. The device for measuring the liquid level of the rinsing tank of the acid level production line according to claim 1 is characterized in that: The rinsing tank below the inclined filter screen is provided with a chip discharge port.

5. The device for measuring the liquid level of the rinsing tank of the acid level production line according to claim 1 is characterized in that: The high-circuit parallel pipe is lower than the inlet and outlet heights at both ends of the horizontal pipe.

6. The device for measuring the liquid level of the rinsing tank of the acid level production line according to claim 1 is characterized in that: The bottom of the low-path parallel pipe is provided with a slag cleaning port.

7. The device for measuring the liquid level of the rinsing tank of the acid level production line according to claim 1 is characterized in that: It also includes an upper transverse pipe, and two ends of the upper transverse pipe are respectively connected to the outer pipe and the rinsing tank.

8. The device for measuring the liquid level of the rinsing tank of the acid level production line according to claim 7 is characterized in that: A filter screen is provided at the connection between the inner opening of the upper transverse pipe and the rinsing tank.

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