Raw acid liquid supply device applied to titanium alloy plate pickling line

Abstract

The utility model relates to a raw acid liquid supply device applied to a titanium alloy plate pickling line, and relates to the field of titanium alloy plate production. According to the technical scheme, a raw acid tank, an input pipeline, a transfer tank, an output pipeline and an acid mixing tank are arranged, the first end of the input pipeline is communicated with the bottom of the raw acid tank, the second end of the input pipeline is communicated with the first end of the bottom of the transfer tank, and an electric one-way input valve is arranged on the input pipeline; the first end of the output pipeline is communicated with the second end of the bottom of the transfer tank, the second end of the output pipeline is communicated with the top of the acid mixing tank, and an electric one-way output valve is arranged on the output pipeline; a bidirectional air pump communicated with the interior of the transfer tank is installed at the top of the transfer tank and can conduct air conveying or air exhausting on the transfer tank. Under the condition, the raw acid liquid is pumped and conveyed to the acid mixing tank in a manner of increasing / reducing the air pressure, so that direct contact between the pump and the raw acid liquid is avoided, and the service life of the pump is prolonged; the transfer tank solves the problems that an original acid tank is too large in size and air pressure is difficult to control.

Description

TECHNICAL FIELD

[0001] The utility model relates to titanium alloy plate production technical field especially a kind of original acid liquid supply device for titanium alloy plate pickling line. BACKGROUND

[0002] Titanium alloy plate is usually formed with a layer of oxide scale after completing rolling and annealing process, which causes obstacles to subsequent surface processing. In order to ensure the quality of material surface, acid pickling process is generally used in industry to remove the oxide layer. Specifically, the acid solution prepared by mixing sulfuric acid, nitric acid and hydrofluoric acid in a specific ratio can effectively dissolve and strip the oxide layer on the titanium alloy plate. This mixed acid solution not only has strong decontamination ability, but also can improve the surface state of workpiece, making it smoother and more flat. However, the original acid-concentrated sulfuric acid, concentrated nitric acid and hydrofluoric acid used to prepare mixed acid are all strong corrosive substances, which are stored in specially designed original acid tanks. These acid solutions not only have strong corrosive effect on metal, but also some acids such as concentrated nitric acid have volatility, which can release harmful gases at room temperature, thus posing potential threat to the surrounding environment and operating personnel.

[0003] From the perspective of practical application, when it is necessary to transfer acid solution from original acid tank to mixed acid tank, acid pump made of main metal is usually relied on to carry out transfer work. However, since these acid pumps are exposed to highly corrosive environment for a long time, their sealing performance will gradually deteriorate over time, especially when dealing with volatile acids like concentrated nitric acid, leakage problem is more likely to occur. Once leakage occurs, not only will it result in acid loss and increase production cost, but also will cause corrosion damage to surrounding equipment and possibly release irritating acid mist, affecting workshop air quality and thus endangering the health of employees. Therefore, in order to deal with these problems, enterprises often have to replace acid pumps regularly, which generally needs to be updated every six months, which undoubtedly increases the complexity and frequency of maintenance work, and also brings additional safety hazards. In general, the current problems of short service life, frequent replacement and high safety risk of acid pump in field use are technical challenges that need to be solved urgently. SUMMARY

[0004] The utility model aims at providing a kind of original acid liquid supply device for titanium alloy plate pickling line to solve the above-mentioned problems existing in prior art.

[0005] To achieve the above-mentioned purpose, the utility model employs the technical scheme that:

[0006] A kind of original acid liquid supply device for titanium alloy plate pickling line, comprising:

[0007] Original acid tank, which stores original acid liquid inside;

[0008] an input pipe, a first end of which is in communication with the bottom of the original acid tank, and an electric one-way input valve is arranged on the input pipe;

[0009] a transfer tank, a first end of the bottom of which is in communication with a second end of the input pipe;

[0010] an output pipe, a first end of which is in communication with a second end of the bottom of the transfer tank, and an electric one-way output valve is arranged on the output pipe; and

[0011] a mixed acid tank, a top of which is in communication with a second end of the output pipe;

[0012] wherein a two-way air pump is arranged on the top of the transfer tank and is in communication with the inside of the transfer tank, and the transfer tank can be supplied with air or air can be extracted from the transfer tank.

[0013] In a possible implementation, the original acid liquid supply device applied to the titanium alloy plate pickling line further comprises a control cabinet, and the electric one-way input valve, the electric one-way output valve and the two-way air pump are electrically connected with the control cabinet.

[0014] In a possible implementation, a gas pressure sensor is arranged in the transfer tank and is electrically connected with the control cabinet.

[0015] In a possible implementation, a liquid level sensor is arranged in the transfer tank and is electrically connected with the control cabinet.

[0016] In a possible implementation, a filter box for filtering acid mist is arranged at the communication position of the two-way air pump and the transfer tank.

[0017] In a possible implementation, the original acid liquid transferred in the transfer tank does not exceed 60% of the capacity of the transfer tank.

[0018] In a possible implementation, the electric one-way input valve allows fluid to flow from the original acid tank to the transfer tank.

[0019] In a possible implementation, the electric one-way output valve allows fluid to flow from the transfer tank to the mixed acid tank.

[0020] The technical scheme provided by the utility model has at least the following beneficial effects:

[0021] The technical scheme is provided with an original acid tank, an input pipeline, a transfer tank, an output pipeline and a mixed acid tank, the first end of the input pipeline is communicated with the bottom of the original acid tank, the second end is communicated with the first end of the bottom of the transfer tank, and an electric one-way input valve is arranged on the input pipeline; the first end of the output pipeline is communicated with the second end of the bottom of the transfer tank, the second end is communicated with the top of the mixed acid tank, and an electric one-way output valve is arranged on the output pipeline; wherein, the top of the transfer tank is provided with a two-way air pump which is communicated with the inside of the transfer tank and can transfer air or exhaust air to the transfer tank. In this case, the air pressure is increased / decreased to extract and transport the original acid liquid to the mixed acid tank, avoiding the direct contact between the pump and the original acid liquid and improving the service life of the pump; and the arrangement of the transfer tank solves the problems of the large volume of the original acid tank and the difficulty in controlling the air pressure. BRIEF DESCRIPTION OF DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present application, and constitute a part of the specification, and are used to explain the present application together with embodiments of the present application, and do not constitute a limitation on the present application.

[0023] Figure 1 A structure schematic view of the original acid liquid supply device applied to the titanium alloy plate pickling line is shown.

[0024] In the figure: 1, electric one-way input valve; 2, input pipeline; 3, transfer tank; 301, air pressure sensor; 302, liquid level sensor; 4, two-way air pump; 401, filter box; 5, electric one-way output valve; 6, output pipeline; 7, original acid tank; 8, mixed acid tank; 9, control cabinet. DETAILED DESCRIPTION

[0025] The technical scheme in the embodiments of the present application will be clearly and completely described below in combination with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0026] Wherein, same parts are denoted by same reference numerals. It should be noted that the words "front", "back", "left", "right", "up" and "down" used in the following description refer to the directions in the drawings accompanying the utility model specification, and the words "bottom" and "top", "inner" and "outer" refer to the directions towards or away from the specific parts. In addition, the terms "first", "second" are used only for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly indicating the number of indicated technical features. Therefore, the features defined as "first", "second" can explicitly or implicitly include one or more features. In the description of the utility model specification, the meaning of "multiple" is two or more than two.

[0027] The utility model will be further described below in combination with the drawings and examples.

[0028] Figure 1 The structure schematic drawing of the original acid liquid supply device applied to the titanium alloy plate pickling line provided by one exemplary embodiment of the utility model is shown, the original acid liquid supply device applied to the titanium alloy plate pickling line, comprising: original acid tank 7, input pipeline 2, transfer tank 3, output pipeline 6 and mixed acid tank 8, the inside of original acid tank 7 is stored with original acid liquid;The first end of input pipeline 2 is communicated with the bottom of original acid tank 7, and an electric one-way input valve 1 is arranged on input pipeline 2;The bottom first end of transfer tank 3 is communicated with the second end of input pipeline 2;The first end of output pipeline 6 is communicated with the bottom second end of transfer tank 3, and an electric one-way output valve 5 is arranged on output pipeline 6;The top of mixed acid tank 8 is communicated with the second end of output pipeline 6;Wherein, the top of transfer tank 3 is installed with the bidirectional air pump 4 communicated with its inside, and can transfer gas or exhaust gas to transfer tank 3.

[0029] It is worth mentioning that the direction of fluid flow allowed by the electric one-way input valve 1 is from original acid tank 7 to transfer tank 3, and the direction of fluid flow allowed by the electric one-way output valve 5 is from transfer tank 3 to mixed acid tank 8.

[0030] In the embodiments of the present application, the original acid supply device applied to the titanium alloy plate pickling line aims to ensure the safe, accurate delivery and mixing of various strong corrosive acid liquids in the pickling process. The original acid tank 7 is used to store concentrated sulfuric acid, concentrated nitric acid, hydrofluoric acid and other original acid liquids. Through the input pipeline 2 connected to the bottom, these acid liquids can be extracted to the transfer tank 3. The electric one-way input valve 1 arranged on the input pipeline 2 only allows the acid liquid to flow from the original acid tank 7 to the transfer tank 3, preventing any possible reverse flow phenomenon, thereby ensuring the safety of the system. The transfer tank 3 serves as a bridge between the original acid tank 7 and the mixed acid tank 8, and plays a buffering role, so that different types of acid liquids can be preliminarily mixed or adjusted before entering the mixed acid tank 8. The bidirectional air pump 4 installed on the top of the transfer tank 3 can be inflated or deflated according to actual needs, which not only helps to control the flow rate of the original acid liquid, but also avoids accidents caused by pressure changes, such as leakage or overflow. The output pipeline 6 guides the preliminarily processed original acid liquid from the transfer tank 3 to the mixed acid tank 8, and in this process, the electric one-way output valve 5 ensures that the original acid liquid can only flow from the transfer tank 3 to the mixed acid tank 8, further ensuring the directionality and safety of the process.

[0031] It can be understood that the original acid supply device applied to the titanium alloy plate pickling line also includes a control cabinet 9, and the electric one-way input valve 1, the electric one-way output valve 5 and the bidirectional air pump 4 are electrically connected with the control cabinet 9. The transfer tank 3 is installed with a gas pressure sensor 301 electrically connected with the control cabinet 9. The transfer tank 3 is installed with a liquid level sensor 302 electrically connected with the control cabinet 9. The control cabinet 9 at least includes a power supply for power supply and a programmable logic controller PLC for cooperation with each component.

[0032] In the embodiments of the present application, in the original acid liquid supply device applied to the titanium alloy plate pickling line, the control cabinet 9 serves as the central nervous system of the entire system, and realizes precise control of the flow direction and flow rate of the original acid liquid through electrically connecting the electric one-way input valve 1, the electric one-way output valve 5 and the bidirectional air pump 4. Specifically, the control cabinet 9 can automatically open or close the electric one-way valve according to a preset program or real-time operation requirements, so as to ensure that the original acid liquid only flows along the specified path and avoid the occurrence of reverse flow phenomenon, while ensuring the safety and efficiency of the pickling process. In addition, the air pressure sensor 301 and the liquid level sensor 302 installed inside the transfer tank 3 are electrically connected with the control cabinet 9, which enables the control cabinet 9 to monitor the air pressure and liquid level changes in the transfer tank in real time. The air pressure sensor 301 is used to detect the pressure state in the transfer tank 3, and when the pressure exceeds the safe range, the bidirectional air pump 4 can be adjusted to maintain the stable operation of the entire device. The liquid level sensor 302 is responsible for monitoring the storage amount of the original acid liquid, so as to prevent overflow due to too high liquid level or affect normal supply due to too low liquid level. After the data of these sensors are fed back to the control cabinet 9, automatic management can be realized, such as automatically adjusting the working mode of the bidirectional air pump 4 or starting the operation of supplementing the original acid liquid according to the liquid level, so as to improve the automation level and safety of production.

[0033] Further, the filter box 401 for filtering acid mist is installed at the communication position of the bidirectional air pump 4 and the transfer tank 3. The original acid liquid transferred in the transfer tank 3 does not exceed 60% of the capacity of the transfer tank 3.

[0034] In the embodiments of the present application, the filter box 401 for filtering acid mist is installed at the communication position of the bidirectional air pump 4 and the transfer tank 3, which is designed to ensure that the acid mist that may be discharged with the gas during the inflation or deflation operation of the transfer tank 3 can be effectively intercepted and purified, so as to avoid its escape into the environment to cause pollution or corrosion of the surrounding equipment. At the same time, the original acid liquid transferred in the transfer tank 3 does not exceed 60% of the capacity of the transfer tank 3, which is to reserve enough space to cope with the expansion of the liquid due to temperature change, and also provides necessary gas phase space for the operation of the bidirectional air pump 4 to ensure the pressure difference conditions required for its normal work. In addition, limiting the liquid filling amount can also reduce the risk of liquid splashing caused by unexpected situations (such as rapid pressurization or depressurization) during the treatment process, thereby improving the overall safety of the device.

[0035] In one example, the box body of the filter box 401 is made of SUS304 or SUS304H stainless steel material, and the internal filter element adopts a multi-layer composite structure, including but not limited to glass fiber, activated carbon, polytetrafluoroethylene (PTFE) and other high-performance filter media.

[0036] Next, the working principle of the original acid liquid supply device applied to the titanium alloy plate pickling line is described.

[0037] When starting to work, the electric one-way input valve is opened, the air pump starts to pump, when the air pressure sensor detects that the air pressure in the transfer tank decreases to 0.02-0.05 MPa, the original acid liquid flows from the original acid tank to the transfer tank through the input pipeline, after the liquid level of the original acid liquid flowing into the transfer tank reaches 60% through the liquid level sensor, the electric one-way input valve is closed;

[0038] Then, the electric one-way output valve is opened, the air pump starts to inflate, when the air pressure in the transfer tank increases to 1.2-2 MPa, the original acid liquid in the transfer tank starts to flow to the mixed acid tank, the original acid liquid in the transfer tank flows to the mixed acid tank through the output pipeline, after the original acid liquid in the transfer tank and the output pipeline is completely discharged, the air pump starts to pump, the air pressure in the transfer tank is restored to normal pressure, and the work is completed.

[0039] As described above, the technical scheme is provided with the original acid tank, the input pipeline, the transfer tank, the output pipeline and the mixed acid tank, the first end of the input pipeline is in communication with the bottom of the original acid tank, the second end is in communication with the first end of the bottom of the transfer tank, and the electric one-way input valve is arranged on the input pipeline; the first end of the output pipeline is in communication with the second end of the bottom of the transfer tank, the second end is in communication with the top of the mixed acid tank, and the electric one-way output valve is arranged on the output pipeline; wherein the transfer tank is provided with the air pump in communication with the inside of the transfer tank, and the air pump can pump or pump the air in the transfer tank. In this case, the air pressure is increased / decreased to pump the original acid liquid to the mixed acid tank, avoiding direct contact between the pump and the original acid liquid, and improving the service life of the pump; the setting of the transfer tank solves the problem that the volume of the original acid tank is too large and the air pressure is difficult to control.

[0040] In the embodiments disclosed in the present application, the terms "mounting", "connection", "connection", "fixing" and the like should be understood in a broad sense, for example, "connection" can be fixed connection, or detachable connection, or integral connection; "connection" can be direct connection, or indirect connection through an intermediate medium. For ordinary skilled persons in the art, the specific meanings of the above terms in the embodiments disclosed in the present application can be understood according to specific circumstances.

[0041] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled persons in the art, some improvements and refinements can be made without departing from the principles of the present application, and these improvements and refinements should also be regarded as the protection scope of the present application.

Claims

1. A raw acid supply device for a titanium alloy plate pickling line, characterized in that, The application relates to a pickling liquid supply device applied to a titanium alloy plate pickling line. The pickling liquid supply device comprises a pickling liquid tank (7) internally storing pickling liquid; an input pipeline (2) with a first end communicated with the bottom of the pickling liquid tank (7), wherein an electric one-way input valve (1) is arranged on the input pipeline (2); a transfer tank (3) with a first end of the bottom communicated with the second end of the input pipeline (2); an output pipeline (6) with a first end communicated with the second end of the bottom of the transfer tank (3), wherein an electric one-way output valve (5) is arranged on the output pipeline (6); and a mixed acid tank (8) with the top communicated with the second end of the output pipeline (6). The transfer tank (3) is provided with a two-way air pump (4) communicated with the inside of the transfer tank (3) and capable of supplying or pumping air to the transfer tank (3). The pickling liquid supply device applied to the titanium alloy plate pickling line further comprises a control cabinet (9), wherein the electric one-way input valve (1), the electric one-way output valve (5) and the two-way air pump (4) are electrically connected with the control cabinet (9). The transfer tank (3) is internally provided with an air pressure sensor (301) electrically connected with the control cabinet (9). The transfer tank (3) is internally provided with a liquid level sensor (302) electrically connected with the control cabinet (9). The two-way air pump (4) is provided with a filter box (401) for filtering acid mist at the communicating position of the two-way air pump (4) and the transfer tank (3).

2. The raw acid solution supply device for a pickling line for titanium alloy sheets according to claim 1, characterized by The pickling liquid transferred in the transfer tank (3) is less than 60% of the capacity of the transfer tank (3).

3. The raw acid solution supply device for a pickling line for titanium alloy sheets according to claim 2, characterized by The electric one-way input valve (1) allows fluid to flow from the pickling liquid tank (7) to the transfer tank (3).

4. The raw acid solution supply device for a pickling line for titanium alloy sheets according to claim 2, characterized by The electric one-way output valve (5) allows fluid to flow from the transfer tank (3) to the mixed acid tank (8).

5. The raw acid solution supply device for a pickling line for titanium alloy sheets according to claim 1, characterized by ​ 6. The raw acid solution supply device for a pickling line for titanium alloy sheets according to claim 1, characterized by ​ 7. The raw acid solution supply device for a pickling line for titanium alloy sheets according to claim 1, characterized by ​ 8. The raw acid solution supply device for a pickling line for titanium alloy sheets according to claim 1, characterized by ​

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