Nanometer powder collecting device suitable for wire electric explosion powder making

Abstract

The utility model discloses a nano powder collecting device suitable for wire electric explosion powder preparation, which is used for being connected with an explosion reactor and comprises a collecting kettle and a dispersion vessel assembly arranged in the collecting kettle, an organic solvent is filled in the collecting kettle and used for immersing the dispersion vessel assembly, and an air inlet pipe assembly and an air outlet pipe assembly are arranged on a top cover of the collecting kettle in a penetrating mode. The upper ends of the gas inlet pipe assembly and the gas outlet pipe assembly are respectively communicated with the gas outlet end and the gas inlet end of the explosion reactor, and the lower end of the gas outlet pipe assembly extends into the collection kettle and is positioned above the liquid level of the organic solvent; the lower end of the gas inlet pipe assembly extends into the collection kettle and is communicated with the top opening of the dispersion vessel assembly, and the gas containing the nano-powder discharged by the explosion reactor is guided into the dispersion vessel assembly, so that the nano-powder is dispersed into the organic solvent, and the agglomeration of the nano-powder is reduced. The nano-powder collecting device has the advantages of simple structure, high collecting efficiency, small powder particles and the like.

Description

Technical Field

[0001] The utility model relates to the technical field of electric explosion powder making devices, in particular to a nano powder collecting device suitable for wire electric explosion powder making. Background Art

[0002] Wire electric explosion powder making refers to the process in which metal wire, under the action of a large pulse current, undergoes solid-state heating, melting, liquid-state heating, and gasification in a very short time, and then electric explosion occurs to form plasma, accompanied by the generation of shock waves and light. Finally, under the action of the impact force, it splashes around at high speed and finally cools to form metal nanopowder. Nanopowder has various effects such as volume effect, surface effect, quantum size effect, and dielectric confinement effect, which make it show special physical and chemical properties such as strong light absorption ability, high activity, high catalysis, high selectivity, high diffusivity, high magnetic susceptibility and coercivity, which makes nanomaterials have unique properties and great potential application value that traditional materials cannot match.

[0003] The existing nanopowder collection methods mainly include high-voltage electrostatic adsorption, liquid nitrogen condensation and natural coagulation and sedimentation. The existing technical solutions have the following deficiencies:

[0004] 1. The high-voltage electrostatic adsorption method is based on the principle of electrostatic adsorption and generally uses high voltage electricity of more than 200,000 volts. The high-voltage electrostatic adsorption method has high energy consumption, and the equipment required to establish and maintain the high-voltage electric field is complex and costly.

[0005] 2. Liquid nitrogen condensation method uses liquid nitrogen to cool to condense solid particles and collect them. The collection efficiency of liquid nitrogen condensation method is low, and a large amount of liquid nitrogen is required as a cooling medium, which increases the collection cost. In addition, liquid nitrogen condensation may cause particle crystallization, affecting the morphology and properties.

[0006] 3. The principle of natural coagulation and sedimentation is that aerosol particles will perform irregular Brownian motion under the action of various forces, which will cause aerosol particles to contact each other to form particles with larger mass, and then settle and be collected under the action of gravity. This method achieves the purpose of collection through the natural sedimentation process of aerosol particles, but it also leads to a slow powder collection process, and the powder is prone to agglomeration during the coagulation process, resulting in a decrease in its physical and chemical properties and affecting its use value. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the deficiencies of the prior art and provide a nano powder collecting device which has a simple structure, high collecting efficiency and small powder particles and is suitable for wire electric explosion powder making.

[0008] In order to solve the above technical problems, the utility model adopts the following technical scheme: a nano powder collection device suitable for wire electric explosion powder making, which is used to be connected to an explosion reactor, including a collection kettle and a dispersion dish assembly arranged in the collection kettle, the collection kettle is filled with an organic solvent for immersing the dispersion dish assembly, an air inlet pipe assembly and an air outlet pipe assembly are penetrated through the top cover of the collection kettle, the upper ends of the air inlet pipe assembly and the air outlet pipe assembly are respectively connected with the air outlet end and the air inlet end of the explosion reactor, the lower end of the air outlet pipe assembly extends into the collection kettle and is above the liquid level of the organic solvent, the lower end of the air inlet pipe assembly extends into the collection kettle and is connected with the top opening of the dispersion dish assembly, and is used to introduce the nano powder-containing gas discharged from the explosion reactor into the dispersion dish assembly to disperse the nano powder into the organic solvent to reduce the agglomeration of the nano powder.

[0009] As a further improvement of the above technical solution: the dispersion dish assembly includes a buffer tube and a dispersion dish body, the air inlet pipe assembly is connected to the dispersion dish body through the buffer tube, so as to allow the gas containing nano-powder to be buffered and then introduced into the dispersion dish body, the cross-section of the dispersion dish body is larger than the cross-section of the buffer tube, and the surface of the dispersion dish body is evenly distributed with a plurality of dispersion holes for quickly dispersing the nano-powder into the organic solvent.

[0010] As a further improvement of the above technical solution: a filtering component is provided on the surface of the dispersion dish body, which is used to filter the nano powder and discharge it into the organic solvent to further reduce the volume of the nano powder.

[0011] As a further improvement of the above technical solution: the filter assembly includes a filter screen arranged on the surface of the dispersion dish body and a filter cloth arranged outside the filter screen.

[0012] As a further improvement of the above technical solution: the air inlet pipe assembly includes a first air inlet pipe and a second air inlet pipe, the first air inlet pipe is arranged outside the collecting kettle and is used to communicate with the air outlet end of the explosion reactor, the second air inlet pipe is arranged inside the collecting kettle and is used to communicate with the dispersion dish assembly, and the second air inlet pipe is connected to the first air inlet pipe through a first switch member.

[0013] As a further improvement of the above technical solution: the air outlet pipe assembly includes a first air outlet pipe and a second air outlet pipe, the first air outlet pipe is arranged outside the collecting kettle and is used to connect with the air inlet end of the explosion reactor, and the second air outlet pipe is arranged inside the collecting kettle and is connected with the first air outlet pipe through a second switch.

[0014] As a further improvement of the above technical solution: the second air inlet pipe and the second air outlet pipe are rubber pipes, and the first air inlet pipe and the first air outlet pipe are metal pipes.

[0015] As a further improvement of the above technical solution: the first switch component and the second switch component are electronic ball valves.

[0016] As a further improvement of the above technical solution: a connection cover is provided at the top opening of the buffer tube, and a fixing through hole is opened on the connection cover for inserting and fixing the air intake pipe assembly.

[0017] As a further improvement of the above technical solution: the connection cover is a conical rubber plug, which is used to be inserted into the top opening of the buffer tube to form a detachable fixed connection.

[0018] Compared with the prior art, the advantages of the utility model are:

[0019] First, the utility model is a nano powder collecting device suitable for wire electric explosion powder making. By setting a closed collecting kettle connected to an explosion reactor, after the wire electric explosion reaction is carried out in the explosion reactor, the nano powder-containing gas is introduced into the collecting kettle through the explosion reactor's own circulation pump. The collecting kettle is filled with an organic solvent. The nano powder-containing gas enters the organic solvent through a dispersion dish component. A layer of organic solvent film will adhere to the surface of the nano powder particles. The organic solvent film blocks the mutual attraction between the nano powder particles to reduce the agglomeration of the nano powder and avoids the nano powder from contacting with the air, thereby greatly improving the antioxidant capacity of the nano powder.

[0020] Second, the utility model is a nano powder collection device suitable for wire electric explosion powder making. By setting a dispersion dish component immersed in an organic solvent in a collecting kettle, the gas containing nano powder is dispersed in small streams through the dispersion dish component and then enters the organic solvent. The dispersion dish component can greatly reduce the volume of the nano powder, reduce the agglomeration of the nano powder, and improve the dispersion characteristics of the nano powder.

[0021] Third, the utility model is a nano powder collection device suitable for wire electric explosion powder making. An air inlet pipe assembly penetrating the top cover of the collecting kettle is provided to connect the air outlet end of the explosion reactor and the top opening of the dispersion dish assembly. At the same time, an air outlet pipe assembly penetrating the top cover of the collecting kettle is provided to connect the air inlet end of the explosion reactor and the inside of the collecting kettle. After the gas containing nano powder passes into the collecting kettle through the air inlet pipe assembly, the excess gas will be discharged from the collecting kettle through the air outlet pipe assembly. On the one hand, the safety and reliability of the closed collecting kettle are guaranteed, and on the other hand, the circulating dispersion operation of the nano powder can be realized, thereby improving the working efficiency of the entire nano powder collection operation.

[0022] Fourth, the utility model is a nano powder collection device suitable for wire electric explosion powder making, the dispersion dish assembly includes a buffer tube and a dispersion dish body arranged in an upper and lower manner, the cross section of the dispersion dish body is larger than the cross section of the buffer tube, and the surface of the dispersion dish body is evenly distributed with a plurality of dispersion holes. This special structural form and matching relationship not only improves the safety of the operation and prolongs the service life of the equipment, but also extremely guarantees the dispersion effect of the nano powder and greatly improves the dispersion efficiency of the gas containing the nano powder.

[0023] Fifth, the utility model is a nano powder collection device suitable for wire electric explosion powder making. By arranging a filtering component on the surface of the dispersion dish body, it can further disperse and reduce the volume of the nano powder on the basis of small-batch dispersion of the dispersion dish body, so that the volume of the nano powder particles entering the organic solvent is small, and the dispersion characteristics of the nano powder are further improved.

[0024] Sixth, the utility model is a nano powder collection device suitable for wire electric explosion powder making, the second air inlet pipe and the second air outlet pipe are rubber pipes, and the first air inlet pipe and the first air outlet pipe are metal pipes. The second air inlet pipe and the second air outlet pipe in the collection kettle are rubber pipes, and the rubber material can reduce the reaction with the organic solvent to avoid contamination of the organic solvent. The first air inlet pipe and the first air outlet pipe are metal pipes, which are used to connect with the explosion reactor to improve the connection strength between the explosion reactor and the collection kettle.

[0025] Seventh, the utility model is a nano powder collection device suitable for wire electric explosion powder making. By setting a special connection cover, the small diameter air intake pipe assembly and the large diameter buffer pipe form a stable connection, which well takes into account the two technical functions of preventing organic solvent reflux and achieving buffer effect. And the connection cover is a conical rubber plug, which can easily disassemble and install the dispersion dish assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 The utility model is a schematic diagram of the internal structure principle of the nano powder collection device suitable for wire electric explosion powder making.

[0027] Figure 2 This is a schematic diagram of the three-dimensional structure principle of the nano powder collection device suitable for wire electric explosion powder making of the utility model

[0028] Figure 3 It is a schematic diagram of the three-dimensional structural principle of the dispersion dish assembly of the utility model.

[0029] Figure 4 It is a schematic diagram of the structural principle of the dispersion dish assembly of the utility model when viewed from above.

[0030] The numbers in the figure represent: 1. collecting kettle; 2. air inlet pipe assembly; 21. first air inlet pipe; 22. second air inlet pipe; 3. air outlet pipe assembly; 31. first air outlet pipe; 32. second air outlet pipe; 4. dispersion dish assembly; 41. buffer tube; 42. dispersion dish body; 421. dispersion holes; 43. connecting cover; 431. fixing through hole; 5. organic solvent; 6. filter assembly; 61. filter screen; 62. filter cloth; 71. first switch member; 72. second switch member. DETAILED DESCRIPTION

[0031] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0032] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present 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 present application.

[0033] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0034] In the present invention, unless otherwise clearly specified and limited, the terms "assemble", "connect", "connect", "fix" 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 or an electrical connection; 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 ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] like Figures 1 to 4 As shown, the nano powder collecting device suitable for wire electric explosion powder making of this embodiment is used to be connected to an explosion reactor (the explosion reactor is an existing conventional device, not shown in the figure), including a collecting kettle 1 (the collecting kettle 1 is a closed container) and a dispersion dish assembly 4 arranged in the collecting kettle 1, the collecting kettle 1 is filled with an organic solvent 5 for immersing the dispersion dish assembly 4 (that is, the dispersion dish assembly 4 is completely in the organic solvent 5), the top cover of the collecting kettle 1 is penetrated by an air inlet pipe assembly 2 and an air outlet pipe assembly 3, the upper ends of the air inlet pipe assembly 2 and the air outlet pipe assembly 3 are They are respectively connected with the gas outlet and gas inlet of the explosion reactor (that is, the upper end of the gas inlet pipe assembly 2 is connected with the gas outlet of the explosion reactor, and the upper end of the gas outlet pipe assembly 3 is connected with the gas inlet of the explosion reactor), the lower end of the gas outlet pipe assembly 3 extends into the collecting kettle 1 and is above the liquid level of the organic solvent 5, and the lower end of the gas inlet pipe assembly 2 extends into the collecting kettle 1 and is connected with the top opening of the dispersion dish assembly 4, so as to introduce the nano powder-containing gas discharged from the explosion reactor into the dispersion dish assembly 4 to disperse the nano powder into the organic solvent 5 to reduce the agglomeration of the nano powder.

[0036] The specific implementation principle is as follows: when the nano powder collection device suitable for wire electric explosion powder making is used, first, the explosion reactor is vacuumed and then an inert gas is introduced into it to perform wire electric explosion powder making operation. Then the circulation pump of the explosion reactor is turned on, so that the nano powder-containing gas generated after the wire electric explosion powder making reaction is discharged from the gas outlet end of the explosion reactor and enters the dispersion dish component 4 of the collection kettle 1 through the air inlet pipe component 2. Under the action of high-pressure gas, the nano powder-containing gas will be dispersed in small streams by the dispersion dish component 4, so that the dispersed nano powder enters the organic solvent 5. After the dispersed nano powder particles contact the organic solvent 5, a layer of organic solvent film will be attached to their surface, which prevents the nano powder from agglomerating and prevents the nano powder from directly contacting the air and causing oxidation. When the air pressure in the collection kettle 1 is greater than the air pressure of the explosion reactor, the inert gas returns to the explosion reactor through the air outlet pipe component 3 to achieve subsequent circulation operations. After the operation is completed, the organic solvent 5 in the collecting kettle 1 is volatilized, and the remaining nano powder can be collected (here, the collecting kettle 1 can be directly used for volatilization and collection, or the organic solvent 5 containing nano powder in the collecting kettle 1 can be poured into other containers, and then the organic solvent 5 in the container is volatilized, and the remaining nano powder in the container can be collected).

[0037] Through the above scientific design, the nano powder collection device suitable for wire electric explosion powder making of the utility model has the following advantages:

[0038] 1. A closed collecting kettle 1 connected to an explosion reactor is provided. After the wire electric explosion reaction is carried out in the explosion reactor, the gas containing nano powder is introduced into the collecting kettle 1 through the circulating pump of the explosion reactor. The collecting kettle 1 is filled with an organic solvent 5. The gas containing nano powder enters the organic solvent 5 through a dispersion dish assembly 4. A layer of organic solvent film will adhere to the surface of the nano powder particles. The organic solvent film blocks the mutual attraction between the nano powder particles to reduce the agglomeration of the nano powder and avoids the contact between the nano powder and the air, thereby greatly improving the antioxidant capacity of the nano powder.

[0039] Second, by setting a dispersion dish assembly 4 immersed in the organic solvent 5 in the collecting kettle 1, the gas containing the nano powder is dispersed in small streams through the dispersion dish assembly 4 and then enters the organic solvent 5. The dispersion dish assembly 4 can greatly reduce the volume of the nano powder, reduce the agglomeration of the nano powder, and improve the dispersion characteristics of the nano powder.

[0040] 3. An air inlet pipe assembly 2 is provided on the top cover of the collecting kettle 1 to connect the air outlet end of the explosion reactor and the top opening of the dispersion dish assembly 4. At the same time, an air outlet pipe assembly 3 is provided on the top cover of the collecting kettle 1 to connect the air inlet end of the explosion reactor and the inside of the collecting kettle 1. After the nano-powder-containing gas passes into the collecting kettle 1 through the air inlet pipe assembly 2, the excess gas will be discharged from the collecting kettle 1 through the air outlet pipe assembly 3. On the one hand, the safety and reliability of the closed collecting kettle 1 are guaranteed. On the other hand, the circulating dispersion operation of the nano-powder can be realized, thereby improving the working efficiency of the entire nano-powder collection operation.

[0041] like Figure 3 and Figure 4 As shown, in this embodiment, the dispersion dish assembly 4 includes a buffer tube 41 and a dispersion dish body 42 arranged in an upper and lower manner. The air inlet pipe assembly 2 is connected to the dispersion dish body 42 through the buffer tube 41 to allow the gas containing nano powder to be buffered and then introduced into the dispersion dish body 42. The cross section of the dispersion dish body 42 is larger than the cross section of the buffer tube 41, and the surface of the dispersion dish body 42 is uniformly distributed with a plurality of dispersion holes 421 for quickly dispersing the nano powder into the organic solvent 5. In this embodiment, as shown in FIG. Figure 3 As shown, the buffer tube 41 is in a tall cylindrical shape, the dispersion dish body 42 is in a short round cake shape, and a plurality of dispersion holes 421 are provided on the bottom surface and the circumferential side wall of the dispersion dish body 42. The buffer tube 41 can first buffer the high-pressure gas entering from the air intake pipe assembly 2, so that the buffered gas containing nano powders enters the dispersion dish body 42 again, and then disperses into the organic solvent 5 through the plurality of dispersion holes 421 uniformly distributed on its surface. This special structural form and matching relationship not only improves the safety of the operation and prolongs the service life of the equipment, but also extremely guarantees the dispersion effect of the nano powders and greatly improves the dispersion efficiency of the gas containing nano powders.

[0042] like Figure 1 As shown, in this embodiment, a filter assembly 6 is provided on the surface of the dispersion dish body 42, which is used to filter the nano powder and discharge it into the organic solvent 5 to further reduce the volume of the nano powder. By providing the filter assembly 6 on the surface of the dispersion dish body 42, the volume of the nano powder can be further dispersed and reduced on the basis of the small-batch dispersion of the dispersion dish body 42, so that the volume of the nano powder particles entering the organic solvent 5 is small, and the dispersion characteristics of the nano powder are further improved.

[0043] like Figure 1As shown, in this embodiment, the filter assembly 6 includes a filter screen 61 disposed on the surface of the dispersion dish body 42 and a filter cloth 62 disposed outside the filter screen 61 (in this embodiment, the filter screen 61 and the filter cloth 62 are fastened and fixed on the buffer tube 41 by a tie or a ribbon, so as to cover the entire dispersion dish body 42). By providing the filter screen 61 and the filter cloth 62, firstly, the dispersed nano powder can be further filtered in multiple stages, the volume of the nano powder particles can be further reduced, and the dispersion characteristics of the nano powder can be further improved; secondly, the filter screen 61 and the filter cloth 62 will not pollute the organic solvent 5. Preferably, the filter screen 61 is a 200-mesh filter screen, and the filter cloth 62 is a 1200-mesh filter cloth, the filtration density increases step by step, and the dispersion filtration effect is better.

[0044] like Figure 1 As shown, in this embodiment, the air inlet pipe assembly 2 includes a first air inlet pipe 21 and a second air inlet pipe 22. The first air inlet pipe 21 is arranged outside the collecting kettle 1 and is used to communicate with the gas outlet of the explosion reactor. The second air inlet pipe 22 is arranged inside the collecting kettle 1 and is used to communicate with the dispersion dish assembly 4. The second air inlet pipe 22 is connected to the first air inlet pipe 21 through a first switch 71. On the one hand, the connection and closing of the collecting kettle 1 and the gas outlet of the explosion reactor are controlled by the first switch 71, so as to control the nano powder-containing gas to enter the collecting kettle 1. On the other hand, the first air inlet pipe 21 and the second air inlet pipe 22 are connected by the first switch 71, so as to improve the stability of the connection between the first air inlet pipe 21 and the second air inlet pipe 22.

[0045] like Figure 1 As shown, in this embodiment, the gas outlet pipe assembly 3 includes a first gas outlet pipe 31 and a second gas outlet pipe 32. The first gas outlet pipe 31 is arranged outside the collecting kettle 1 and is used to communicate with the gas inlet end of the explosion reactor. The second gas outlet pipe 32 is arranged inside the collecting kettle 1 and is communicated with the first gas outlet pipe 31 through a second switch 72. The second switch 72 controls the connection and closing of the collecting kettle 1 and the gas inlet end of the explosion reactor, so that the inert gas in the collecting kettle 1 can enter the explosion reactor. In addition, the first gas outlet pipe 31 and the second gas outlet pipe 32 are connected through the second switch 72 to improve the connection strength of the first gas outlet pipe 31 and the second gas outlet pipe 32.

[0046] When the electric explosion powder making reaction of the wire in the explosion reactor is completed, an inert gas is introduced into the explosion reactor, and the first switch 71 and the second switch 72 are turned on at this time, so that the gas containing nano powder in the explosion reactor enters the collecting kettle 1 through the air inlet pipe assembly 2. As the pressure of the explosion reactor decreases, the gas in the collecting kettle 1 will return to the explosion reactor through the first outlet pipe 31 and the second outlet pipe 32, realizing gas circulation, so that the nano powder is circulated and dispersed, which greatly improves the work efficiency.

[0047] In this embodiment, the second air inlet pipe 22 and the second air outlet pipe 32 are rubber pipes, and the first air inlet pipe 21 and the first air outlet pipe 31 are metal pipes. The second air inlet pipe 22 and the second air outlet pipe 32 in the collecting kettle 1 are rubber pipes, and the rubber material can reduce the reaction with the organic solvent 5 to avoid contaminating the organic solvent 5. The first air inlet pipe 21 and the first air outlet pipe 31 are metal pipes, which are used to connect with the explosion reactor to improve the connection strength between the explosion reactor and the collecting kettle 1. Preferably, the first air inlet pipe 21 and the first air outlet pipe 31 are stainless steel corrugated hoses, and the stainless steel material has a long service life and low cost.

[0048] In this embodiment, the first switch element 71 and the second switch element 72 are electronic ball valves, which have high control accuracy and good sealing performance.

[0049] like Figure 3 As shown, in this embodiment, a connection cover 43 is provided at the top opening of the buffer tube 41, and a fixing through hole 431 is provided on the connection cover 43 for inserting and fixing the intake pipe assembly 2. Figure 2 As shown, the diameter of the intake pipe assembly 2 is smaller than the diameter of the buffer tube 41. This is because in order to effectively prevent the organic solvent 5 from flowing back, the diameter of the intake pipe assembly 2 needs to be set smaller; but in order to achieve an excellent buffering effect, the diameter of the buffer tube 41 needs to be set larger. The utility model provides a special connection cover 43, so that the small-diameter intake pipe assembly 2 and the large-diameter buffer tube 41 form a stable connection, which well takes into account the two technical functions of preventing the organic solvent 5 from flowing back and achieving the buffering effect.

[0050] like Figure 3 As shown, in this embodiment, the connection cover 43 is a conical rubber plug, which is used to insert into the top opening of the buffer tube 41 to form a detachable fixed connection. The conical rubber plug is convenient to insert into the top of the buffer tube 41. When the nano powder collection device has been working for a period of time, the dispersion holes 421 may be blocked, and the dispersion dish assembly 4 needs to be disassembled for cleaning to ensure the collection efficiency of the nano powder. By providing the conical rubber plug, the dispersion dish assembly 4 can be disassembled and installed very conveniently.

[0051] Preferably, the body of the collecting kettle 1 and the top cover of the collecting kettle 1 are detachably connected via a bolt assembly, and a sealing ring is provided between the body of the collecting kettle 1 and the top cover of the collecting kettle 1 to improve the airtightness of the collecting kettle 1.

[0052] Although the present invention has been disclosed as a preferred embodiment, it is not intended to limit the present invention. Any technician familiar with the art can use the above disclosed technical content to make many possible changes and modifications to the technical solution of the present invention without departing from the scope of the technical solution of the present invention, or modify it into an equivalent embodiment of equivalent changes. Therefore, any simple modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention should fall within the scope of protection of the technical solution of the present invention.

Claims

1. A nano powder collection device suitable for wire electric explosion powder making, used to be connected to an explosion reactor, characterized in that: The invention comprises a collecting kettle (1) and a dispersion dish assembly (4) arranged in the collecting kettle (1), wherein the collecting kettle (1) is filled with an organic solvent (5) for immersing the dispersion dish assembly (4), and an air inlet pipe assembly (2) and an air outlet pipe assembly (3) are provided on the top cover of the collecting kettle (1), wherein the upper ends of the air inlet pipe assembly (2) and the air outlet pipe assembly (3) are respectively connected to the air outlet end and the air inlet end of the explosion reactor, and the lower end of the air outlet pipe assembly (3) extends into the collecting kettle (1) and is located above the liquid level of the organic solvent (5), and the lower end of the air inlet pipe assembly (2) extends into the collecting kettle (1) and is connected to the top opening of the dispersion dish assembly (4), and is used for introducing the nano powder-containing gas discharged from the explosion reactor into the dispersion dish assembly (4) so ​​as to disperse the nano powder into the organic solvent (5) to reduce the agglomeration of the nano powder.

2. The nano powder collecting device suitable for wire electric explosion powder making according to claim 1 is characterized in that: The dispersion dish assembly (4) comprises a buffer tube (41) and a dispersion dish body (42); the air inlet pipe assembly (2) is connected to the dispersion dish body (42) via the buffer tube (41) so as to allow the gas containing the nano-powder to be buffered and then introduced into the dispersion dish body (42); the cross section of the dispersion dish body (42) is larger than the cross section of the buffer tube (41), and a plurality of dispersion small holes (421) are evenly distributed on the surface of the dispersion dish body (42) so as to quickly disperse the nano-powder into the organic solvent (5).

3. The nano powder collecting device suitable for wire electric explosion powder making according to claim 2 is characterized in that: A filtering component (6) is provided on the surface of the dispersion dish body (42) for filtering the nano powder and discharging it into the organic solvent (5) to further reduce the volume of the nano powder.

4. The nano powder collecting device suitable for wire electric explosion powder making according to claim 3 is characterized in that: The filter assembly (6) comprises a filter screen (61) arranged on the surface of the dispersion dish body (42) and a filter cloth (62) arranged outside the filter screen (61).

5. The nano powder collecting device suitable for wire electric explosion powder making according to claim 1, characterized in that: The air inlet pipe assembly (2) comprises a first air inlet pipe (21) and a second air inlet pipe (22); the first air inlet pipe (21) is arranged outside the collecting kettle (1) and is used to communicate with the air outlet of the explosion reactor; the second air inlet pipe (22) is arranged inside the collecting kettle (1) and is used to communicate with the dispersion dish assembly (4); the second air inlet pipe (22) is connected to the first air inlet pipe (21) via a first switch member (71).

6. The nano powder collecting device suitable for wire electric explosion powder making according to claim 5, characterized in that: The gas outlet pipe assembly (3) comprises a first gas outlet pipe (31) and a second gas outlet pipe (32); the first gas outlet pipe (31) is arranged outside the collecting kettle (1) and is used to communicate with the gas inlet end of the explosion reactor; the second gas outlet pipe (32) is arranged inside the collecting kettle (1) and is communicated with the first gas outlet pipe (31) via a second switch member (72).

7. The nano powder collecting device suitable for wire electric explosion powder making according to claim 6, characterized in that: The second air inlet pipe (22) and the second air outlet pipe (32) are rubber pipes, and the first air inlet pipe (21) and the first air outlet pipe (31) are metal pipes.

8. The nano powder collecting device suitable for wire electric explosion powder making according to claim 6, characterized in that: The first switch component (71) and the second switch component (72) are electronic ball valves.

9. The nano powder collecting device suitable for wire electric explosion powder making according to claim 2, characterized in that: A connection cover (43) is provided at the top opening of the buffer tube (41), and a fixing through hole (431) is provided on the connection cover (43) for inserting and fixing the air intake pipe assembly (2).

10. The nano powder collecting device suitable for wire electric explosion powder making according to claim 9, characterized in that: The connection cover (43) is a conical rubber plug, which is used to be inserted into the top opening of the buffer tube (41) to form a detachable fixed connection.

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