Melted metal sample purifying and exhausting device

Abstract

The utility model relates to the technical field of waste gas treatment, and particularly discloses a molten metal sample purifying and exhausting device which comprises a cover body, an exhaust pipe and an exhaust fan, the exhaust pipe is connected to the top of the cover body, a drawer is installed on the upper middle portion of the cover body, activated carbon is placed in the drawer, a plurality of through holes are formed in the bottom of the drawer, and the through holes are communicated with the lower space of the cover body. The lower space of the cover body can be used as an operation space for dissolving metal by proportional acid, and a door body convenient for entering the lower space is arranged at the lower part of the cover body; a supporting plate is arranged at the bottom of the cover body and used for placing articles needed when metal is dissolved by proportional acid, and an air inlet hole is formed in the lower portion of the cover body. The scheme is used for solving the problem that in the prior art, waste gas cannot be exhausted in time when metal is dissolved by proportional acid, and the health of workers is affected.

Description

Technical Field

[0001] The utility model relates to the technical field of waste gas treatment, in particular to a metal molten sample purification and exhaust device. Background Art

[0002] When testing the metal content, it is often necessary to prepare a certain proportion of acid to dissolve the metal, such as using aqua regia made of nitric acid and sulfuric acid in proportion to dissolve copper to determine the copper content.

[0003] When proportional acid dissolves metal, waste gases such as nitric oxide and sulfur dioxide will be produced due to the reaction between proportional acid and metal. In addition, proportional acid is volatile and has certain corrosiveness, so it is often configured on-site when used. Whether it is the configuration process or the test process, proportional acid will form acid mist in the environment, which is harmful to the human body. In the prior art, when metal content testing is not frequent, exhaust fans are often used to blow away the waste gas to avoid excessive waste gas concentration causing harm to the human body. However, in this way, the exhaust fan only disperses the waste gas or acid mist in the test area and reduces the concentration, but does not really treat the acid mist and waste gas, which will still have a certain impact on the health of the staff. Utility Model Content

[0004] The utility model aims to provide a metal molten sample purification and exhaust device to solve the problem in the prior art that waste gas cannot be discharged in time when metal is dissolved by proportional acid, thus affecting the health of workers.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A metal melt purification and exhaust device comprises a cover body, an exhaust pipe and an exhaust fan. The exhaust pipe is connected to the top of the cover body. A drawer is installed in the middle and upper part of the cover body. Activated carbon is placed in the drawer. A plurality of through holes are arranged at the bottom of the drawer, which are connected to the lower space of the cover body.

[0007] The principle and advantages of this scheme are: when this scheme is adopted, the staff conducts a test of proportional acid dissolving metal in the lower space of the cover body. The acid mist and waste gas generated during the test enter the drawer under the action of the exhaust fan, and then are discharged to the outside through the exhaust pipe after being adsorbed by the activated carbon in the drawer. The entire scheme is set up with an exhaust device, so that the waste gas and acid mist originally in the test space are discharged in time, avoiding the health impact of the waste gas and acid mist on the staff. In addition, the waste gas and acid mist are adsorbed by the activated carbon during the extraction process, which is beneficial to environmental protection and avoids the pollution of the atmosphere by direct emission of waste gas and acid mist.

[0008] In addition, in this solution, a drawer is used to hold the activated carbon, making the replacement of the activated carbon simpler and more convenient.

[0009] Preferably, as an improvement, the lower space of the cover body can be used as an operating space for dissolving metal with proportional acid, and a door body is provided at the lower part of the cover body for convenient access to the lower space. Through the setting of the door body, the lower part of the cover body can be set larger, so that the entire operation of dissolving metal with proportional acid is all within the cover body, and the door body is used to facilitate the staff to open the door body for operation.

[0010] Preferably, as an improvement, a support plate is provided at the bottom of the cover body, and the support plate is used to place items required for dissolving metal with proportional acid. An air inlet is provided at the lower part of the cover body. This solution arranges the support plate at the bottom of the cover body so that the entire operating space for dissolving metal with proportional acid can be located entirely within the cover body, which is conducive to faster and more thorough extraction of waste gas and acid mist; it can also completely cover the test space when no test is being carried out, thereby avoiding the discharge of residual waste gas or acid mist in the test space.

[0011] Preferably, as an improvement, support legs are provided at the bottom of the cover body, and the support plate is higher than the support legs.

[0012] Preferably, as an improvement, the air inlet hole is arranged on the support plate to facilitate air intake from the hollow space between the support plate and the ground.

[0013] Preferably, as an improvement, the cover body is of a box-type structure, and the top surface and at least one side surface of the cover body are made of transparent glass. On the one hand, the transparent glass is an anti-corrosion material; on the other hand, because acid mist is easy to adhere, the adhered acid mist is yellow. The provision of transparent glass makes it convenient for staff to quickly know the degree of acid mist adhesion, and then facilitates the arrangement of personnel for timely cleaning.

[0014] Preferably, as an improvement, the top surface of the cover body is a detachable glass top surface, so as to facilitate the removal and cleaning of the top glass.

[0015] Preferably, as an improvement, a check valve is provided on the exhaust pipe to avoid gas backflow.

[0016] Preferably, as an improvement, the activated carbon is honeycomb activated carbon, and the activated carbon is placed directly above the through hole to improve the adsorption effect and the absorption efficiency of the activated carbon. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of an embodiment of the utility model.

[0018] Figure 2 This is a schematic structural diagram of the transparent glass material part in a perspective state according to an embodiment of the utility model.

[0019] Figure 3 for Figure 1 Main view

[0020] Figure 4 for Figure 1 The main cross-sectional view (the operating table part is not cut). DETAILED DESCRIPTION

[0021] The following is further described in detail through specific implementation methods:

[0022] The reference numerals in the drawings of the specification include: cover body 1, exhaust pipe 2, drawer 3, door body 4, support plate 5, operating table 6, support leg 7, air inlet hole 8, activated carbon 9, partition 10.

[0023] The embodiment is basically as shown in the attached Figures 1 to 4 shown.

[0024] A metal molten sample purification and exhaust device comprises a cover body 1, an exhaust pipe 2 and an exhaust fan, wherein the exhaust pipe 2 is connected to the top surface of the cover body 1, a check valve is installed in the exhaust pipe 2, and the exhaust fan is used to extract the gas in the cover body 1 to the outside through the exhaust pipe 2, and the exhaust fan adopts a tubular exhaust fan (a tubular exhaust fan is shown in the figure).

[0025] A drawer 3 is installed in the middle and upper part of the cover body 1, and activated carbon 9 is placed in the drawer 3. A plurality of through holes are provided at the bottom of the drawer 3, and the through holes are connected to the lower space of the cover body 1. The activated carbon 9 is a honeycomb-shaped activated carbon 9, and the activated carbon 9 is placed just above the through holes. In this embodiment, the number of drawers 3 is two side by side, and a partition 10 is provided between the drawers 3. The partition 10 completely blocks the gaps between the left drawer 3 and the right drawer 3, and between the drawer 3 and the side wall of the cover body 1, so that the cover body 1 is separated into the upper and lower parts by the bottom of the drawer 3 and the partition 10, ensuring that the exhaust gas and acid mist must be discharged from the through holes at the bottom of the drawer 3 after passing through the activated carbon 9. The exhaust pipe 2 is located in the middle of the two drawers 3, and the exhaust pipe 2 can be connected to the internal spaces of the two drawers 3.

[0026] The lower space of the cover body 1 can be used as an operating space for dissolving metal with proportional acid. A door body 4 is provided at the lower part of the cover body 1 for convenient access to the lower space. The door body 4 can be an open door or a sliding door. In this embodiment, the door body 4 takes a sliding door as an example.

[0027] A support plate 5 is provided at the bottom of the cover body 1, and the support plate 5 is used to place items required for dissolving metal with proportional acid, such as a furnace body and an operating table 6. Support legs 7 are provided at the bottom of the cover body 1, and the support plate 5 is higher than the support legs 7. An air inlet 8 is opened on the support plate 5.

[0028] The cover body 1 is a box-type structure, the top surface, left side surface and right side surface of the cover body 1 are made of transparent glass, the door body 4 installed on the cover body 1 is also made of transparent glass, and the back surface of the cover body 1 and the support plate 5 are both made of stainless steel metal.

[0029] The top transparent glass of the cover body 1 is matched with the cover body 1 in a pull-in and pull-out manner, which facilitates the removal of the top transparent glass.

[0030] The specific process of this embodiment is as follows:

[0031] When this embodiment is used, when it is necessary to dissolve the metal with proportional acid, the exhaust fan is turned on, and the test items are placed on the operating table 6 for testing. The acid mist and exhaust gas generated during the test directly pass through the through holes on the drawer 3 under negative pressure suction and are adsorbed by the activated carbon 9, and the adsorbed gas is then discharged from the exhaust pipe.

[0032] By setting up the exhaust device, the waste gas and acid mist originally in the test space can be discharged in time to avoid the health impact of the waste gas and acid mist on the workers. In addition, the waste gas and acid mist are adsorbed by the activated carbon 9 during the extraction process, which is beneficial to environmental protection and avoids the pollution of the atmosphere by direct emission of waste gas and acid mist.

[0033] In addition, in this embodiment, the drawer 3 is used to contain the activated carbon 9, which makes the replacement of the activated carbon 9 simpler and more convenient.

[0034] In addition, in this embodiment, multiple surfaces of the cover body 1 are set as transparent glass, which is convenient for staff to check the situation inside the cover body 1 from the outside. At the same time, the transparent glass has good corrosion resistance and can avoid corrosion. In addition, the transparent glass can also facilitate timely detection after the acid mist adheres to the transparent glass, and conveniently arrange cleaning treatment.

[0035] In addition, the exhaust device can be tested and operated while sitting on a stool, so that the box-type cover body 1 can be set to a height of less than 1.2 meters, a depth of less than 1 meter and a width of less than 2 meters, which is convenient for miniaturization of the entire exhaust device, and then convenient for using the exhaust device as a mobile laboratory and transferring it as needed, achieving a balance between low cost and practicality.

[0036] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A metal melt purification and exhaust device, comprising a cover, an exhaust pipe and an exhaust fan, wherein the exhaust pipe is connected to the top of the cover, and is characterized in that: A drawer is installed at the middle and upper part of the cover body, activated carbon is placed in the drawer, and a plurality of through holes are arranged at the bottom of the drawer, which are communicated with the lower space of the cover body.

2. The metal melt purification and exhaust device according to claim 1, characterized in that: The lower space of the cover body can be used as an operating space for dissolving metal with proportional acid, and a door body is provided at the lower part of the cover body for convenient access to the lower space.

3. The metal melt purification and exhaust device according to claim 2, characterized in that: A support plate is arranged at the bottom of the cover body, and the support plate is used to place items required for dissolving metals with proportional acid. An air inlet hole is arranged at the lower part of the cover body.

4. The metal melt purification and exhaust device according to claim 3 is characterized in that: The bottom of the cover body is provided with supporting legs, and the supporting plate is higher than the supporting legs.

5. The metal melt purification and exhaust device according to claim 4, characterized in that: The air inlet hole is arranged on the supporting plate.

6. The metal melt purification and exhaust device according to any one of claims 3 to 5, characterized in that: The cover body is a box-type structure, and the top surface and at least one side surface of the cover body are made of transparent glass.

7. The metal melt purification and exhaust device according to claim 6, characterized in that: The top surface of the cover body is a detachable glass top surface.

8. The metal melt purification and exhaust device according to any one of claims 1 to 5, characterized in that: A check valve is arranged on the exhaust pipe.

9. The metal melt purification and exhaust device according to any one of claims 1 to 5, characterized in that: The activated carbon is honeycomb-shaped activated carbon, and the activated carbon is placed just above the through hole.

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