Low-pressure gas-liquid preparation air separation equipment

Abstract

The utility model discloses low-pressure gas-liquid preparation air separation equipment, which relates to the field of metal processing and comprises a base, an air separation body is arranged at the top of the base, a filter box is mounted on one side of the air separation body, a filter component is arranged in the filter box, and an air pump is mounted at the top of the filter box. And a heating box is arranged at the top of the air separation body, an exhaust pipe is connected between the heating box and the air pump, and an exhaust pipe is connected between the other end of the heating box and the air separation body. Filtered and dried gas is exhausted into the heating box under the action of the air pump, waste heat in the heating box can enter the spiral flow channel of the filtering box through the waste heat pipe, the filtered gas is dried through the waste heat, heat waste is reduced, meanwhile, the overall drying cost is reduced, and the drying efficiency is improved. And the spiral flow channel is arranged, so that the contact area between waste heat and gas in the filter box is further increased, and the overall drying efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the field of metal processing, in particular to a low-pressure gas-liquid preparation air separation device. Background Art

[0002] Metal processing refers to human production activities of processing materials with metallic properties that are composed of metal elements or mainly composed of metal elements. The progress of human society is closely related to the processing and application of metal materials. Brass was smelted more than 6,000 years ago, simple bronze tools could be made more than 4,000 years ago, and weapons were made of meteoric iron more than 3,000 years ago. After metal processing is completed, nitrogen is needed to treat the metal surface, and then air separation equipment is needed to extract nitrogen from the air.

[0003] The Chinese patent with announcement number CN113996139 U provides an energy-saving low-pressure gas-liquid production air separation device, in which a second heating box is fixedly connected to the top of the top plate, and the middle end of the top and the middle end of the bottom of the second heating box inner cavity are fixedly connected to the second heating plate by bolts, the middle end of the left side of the drying box is fixedly connected to the first heating box, and the middle end of the left side and the middle end of the right side of the first heating box inner cavity are fixedly connected to the first heating plate by bolts, thereby achieving a heating effect.

[0004] In summary, when the above device is working, the heat in the heating box will leak out through the gap between the suction pipe and the heating box, and the remaining heat will be directly discharged, which will cause a lot of heat waste and increase the overall drying cost. Utility Model Content

[0005] Based on this, the purpose of the utility model is to provide a low-pressure gas-liquid production air separation device to solve the technical problem that a large amount of heat is wasted in the heating box during operation and the overall drying cost is increased.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a low-pressure gas-liquid production air separation equipment, comprising a base, an air separation body is arranged on the top of the base, and a filter box is installed on one side of the base, a filter assembly is arranged in the filter box, and an air pump is installed on the top of the filter box, a heating box is arranged on the top of the air separation body, and an exhaust pipe is connected between the heating box and the air pump, an exhaust pipe is connected between the other end of the heating box and the air separation body, a spiral flow channel is arranged in the interlayer of the filter box, a heat exhaust pipe is connected to one end of the spiral flow channel, and a waste heat pipe is connected to the other end of the spiral flow channel, and one end of the waste heat pipe is connected to the heating box.

[0007] By adopting the above technical solution, the filtered and dried gas is discharged into the heating box under the action of the air pump, and the residual heat in the heating box enters the spiral flow channel of the filter box through the residual heat pipe, so that the filtered gas is dried by utilizing the residual heat, which reduces heat waste and reduces the overall drying cost. The setting of the spiral flow channel further increases the contact area between the residual heat and the gas inside the filter box, thereby accelerating the overall drying efficiency.

[0008] The utility model is further configured such that the filter assembly includes a drying net, a filter plate and an activated carbon net, an activated carbon net is arranged at the bottom of the filter box, a drying net is installed at the top of the filter box, and a filter plate is installed between the activated carbon net and the drying net.

[0009] By adopting the above technical solution, when the outside air enters the filter box, the impurity particles in the air are adsorbed by the activated carbon net, and then they are filtered for the second time under the action of the filter plate. The air passing through the filter plate will dry the moisture carried in the air under the action of the drying net, thereby further improving the drying effect of the incoming air.

[0010] The utility model is further configured that the activated carbon net is arranged in an arc shape in the filter box, and a sealing arrangement is arranged in the middle position of the activated carbon net.

[0011] By adopting the above technical solution, when air enters the arc-shaped activated carbon net, it will be uniformly sprayed toward the middle position of the activated carbon net. Since the middle position is sealed, the air will move on the edge of the activated carbon net and be discharged upward through its openings. In this process, the incoming air is diffused, which increases the contact area between the subsequent air and the residual heat in the spiral flow channel, and further reduces the heating cost in the heating box.

[0012] The utility model is further configured such that one side of the filter box is located at the bottom of the heat exhaust pipe and is connected with an air inlet, and a sealing arrangement is provided between the air inlet and the filter box.

[0013] By adopting the above technical solution, the outside air is discharged into the filter box through the air inlet, and the sealing arrangement between the two prevents leakage.

[0014] The utility model is further configured such that the exhaust pipe and the air extraction pipe are at the same horizontal height.

[0015] By adopting the above technical solution, it is ensured that the air can be stably discharged into the air separation body through the exhaust pipe, further improving the subsequent processing efficiency.

[0016] The utility model is further configured such that the air pump and the filter box are detachably arranged.

[0017] By adopting the above technical solution, the detachable setting makes it easier for subsequent staff to maintain and repair the air pump, thereby reducing the workload of subsequent staff.

[0018] The utility model is further configured that a filter screen is provided at the air inlet.

[0019] By adopting the above technical solution, large particle impurities in the external air are filtered once through the filter net at the air inlet, preventing subsequent impurities from clogging the activated carbon net.

[0020] The utility model is further configured that an external fan is installed at one end of the heat exhaust pipe.

[0021] By adopting the above technical solution, under the action of the external fan, it is ensured that all the residual heat in the heating box is discharged into the spiral flow channel, so that the residual heat is fully utilized.

[0022] In summary, the utility model mainly has the following beneficial effects:

[0023] The utility model realizes drying and filtering of the gas entering the air separation body by arranging a drying net, a filter plate and an activated carbon net in the filter box, and at the same time discharges the filtered and dried gas into the heating box under the action of an air pump. The waste heat in the heating box enters the spiral flow channel of the filter box through the waste heat pipe, so that the filtered gas is dried by utilizing the waste heat, which reduces heat waste and reduces the overall drying cost. The arrangement of the spiral flow channel further increases the contact area between the waste heat and the gas inside the filter box, thereby accelerating the overall drying efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 It is a three-dimensional diagram of the utility model;

[0025] Figure 2 It is a cross-sectional view of the utility model;

[0026] Figure 3 For this utility model Figure 1 A magnified view of middle;

[0027] Figure 4 For this utility model Figure 2 Enlarged view of B.

[0028] In the figure: 1. Base; 2. Air separation body; 3. Filter box; 4. Waste heat pipe; 5. Air inlet; 6. Heat exhaust pipe; 7. Air pump; 8. Heating box; 9. Exhaust pipe; 10. Drying net; 11. Filter plate; 12. Spiral flow channel; 13. Exhaust pipe; 14. Activated carbon net. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. The embodiments described below with reference to the drawings are exemplary and are only used to explain the utility model, and cannot be understood as limiting the utility model.

[0030] The following describes an embodiment of the utility model based on its overall structure.

[0031] Embodiment 1

[0032] A low pressure gas-liquid production air separation plant, such as Figure 1-Figure 4 As shown, it includes a base 1, an air separation body 2, a filter box 3, a heat transfer mechanism, a filtering mechanism and a drying mechanism. A filtering assembly is arranged in the filter box 3, and an air inlet 5 is connected to one side of the filter box 3 at the bottom of the heat exhaust pipe 6, and the air inlet 5 and the filter box 3 are sealed. The outside air is discharged into the filter box 3 under the action of the air inlet 5. The sealing arrangement between the two prevents leakage. The filtering assembly includes a drying net 10, a filter plate 11 and an activated carbon net 14. The activated carbon net 14 is arranged at the bottom of the filter box 3, and the drying net 10 is installed at the top of the filter box 3. The filter plate 11 is installed between the activated carbon net 14 and the drying net 10. When the outside air enters the filter box 3, the impurity particles in the air are adsorbed by the activated carbon net 14, and then the impurity particles are filtered twice under the action of the filter plate 11. The air passing through the filter plate 11 will dry the moisture carried in the air under the action of the drying net 10, thereby further improving the drying effect of the incoming air.

[0033] Then, an air pump 7 is installed on the top of the filter box 3, a heating box 8 is arranged on the top of the air separation body 2, and an exhaust pipe 13 is connected between the heating box 8 and the air pump 7. The air filtered and dried in the filter box 3 is dried again through the heating box 8 under the action of the exhaust pipe 13. An exhaust pipe 9 is connected between the other end of the heating box 8 and the air separation body 2. Then, under the action of the exhaust pipe 9, the air is discharged to the air separation body 2 for processing, and a spiral flow channel 12 is arranged in the interlayer of the filter box 3, and a heat exhaust pipe 13 is connected at one end of the spiral flow channel 12. Tube 6, and the other end of the spiral flow channel 12 is connected with a waste heat pipe 4, and one end of the waste heat pipe 4 is connected to the heating box 8, wherein an external fan is installed at one end of the heat exhaust pipe 6. Under the action of the external fan, the waste heat in the heating box 8 will enter the spiral flow channel 12 of the filter box 3 through the waste heat pipe 4, so as to utilize the waste heat to dry the filtered gas, reduce heat waste, and reduce the overall drying cost. The setting of the spiral flow channel 12 further increases the contact area between the waste heat and the gas inside the filter box 3, thereby accelerating the overall drying efficiency.

[0034] See also Figure 1The exhaust pipe 9 and the exhaust pipe 13 are at the same horizontal height to ensure that the air can be stably discharged into the air separation body 2 through the exhaust pipe 9, further improving the subsequent processing efficiency. The air pump 7 and the filter box 3 are detachably arranged. The detachable arrangement makes it easy for subsequent staff to maintain and overhaul the air pump, reducing the workload of subsequent staff.

[0035] Embodiment 2

[0036] like Figure 2 A low-pressure gas-liquid production air separation device is shown, and its overall structure is similar to that of Example 1, wherein the activated carbon net 14 is arranged in an arc shape in the filter box 3, and the middle position of the activated carbon net 14 is sealed. When air enters the arc-shaped activated carbon net 14, it will be uniformly sprayed to the middle position of the activated carbon net 14. Since the middle position is sealed, the air will move on the edge of the activated carbon net 14 and be discharged upward through its openings. In this process, the diffusion of the incoming air is realized, thereby increasing the contact area between the subsequent air and the residual heat in the spiral flow channel 12, and further reducing the heating cost in the heating box 8.

[0037] The working principle of the utility model is as follows: when in use, external air is sucked into the filter box 3 through the action of the air inlet 5, and then the entered air is dried and filtered under the cooperation of the activated carbon net 14, the filter plate 11 and the drying net 10, and the filtered air is discharged to the heating box 8 through the exhaust pipe 13 under the action of the air pump 7, and the gas heated by the heating box 8 is discharged into the air separation body 2 under the action of the exhaust pipe 9, and the waste heat generated during the heating process of the heating box 8 will be discharged to the spiral flow channel 12 of the filter box 3 through the waste heat pipe 4, thereby realizing the secondary utilization of the waste heat, reducing the overall drying cost, and reducing the waste of heat.

[0038] Although an embodiment of the utility model has been shown and described, this specific embodiment is only an explanation of the utility model and is not a limitation of the utility model. The specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions and variations to the embodiments without creative contribution as needed without departing from the principles and purpose of the utility model. However, as long as they are within the scope of the claims of the utility model, they are protected by patent law.

Claims

1. A low-pressure gas-liquid production air separation device, comprising a base (1), an air separation body (2) is arranged on the top of the base (1), and a filter box (3) is installed on one side of the base, characterized in that: A filter assembly is arranged in the filter box (3), and an air pump (7) is installed on the top of the filter box (3); a heating box (8) is arranged on the top of the air separation body (2), and an exhaust pipe (13) is connected between the heating box (8) and the air pump (7); an exhaust pipe (9) is connected between the other end of the heating box (8) and the air separation body (2); a spiral flow channel (12) is arranged in the interlayer of the filter box (3), a heat exhaust pipe (6) is connected to one end of the spiral flow channel (12), and a waste heat pipe (4) is connected to the other end of the spiral flow channel (12); one end of the waste heat pipe (4) is connected to the heating box (8); 2. A low-pressure gas-liquid production air separation device according to claim 1, characterized in that: The filter assembly comprises a drying net (10), a filter plate (11) and an activated carbon net (14); the activated carbon net (14) is arranged at the bottom of the filter box (3), the drying net (10) is installed at the top of the filter box (3), and the filter plate (11) is installed between the activated carbon net (14) and the drying net (10).

3. A low-pressure gas-liquid production air separation device according to claim 2, characterized in that: The activated carbon net (14) is arranged in an arc shape on the filter box (3), and a sealing arrangement is arranged in the middle of the activated carbon net (14).

4. A low-pressure gas-liquid production air separation device according to claim 1, characterized in that: One side of the filter box (3) is located at the bottom of the heat exhaust pipe (6) and is connected to an air inlet (5), and a sealing arrangement is provided between the air inlet (5) and the filter box (3).

5. A low-pressure gas-liquid production air separation device according to claim 1, characterized in that: The exhaust pipe (9) and the air extraction pipe (13) are at the same level.

6. A low-pressure gas-liquid production air separation device according to claim 1, characterized in that: The air pump (7) and the filter box (3) are detachably arranged.

7. A low-pressure gas-liquid production air separation device according to claim 4, characterized in that: A filter screen is provided at the air inlet (5).

8. A low-pressure gas-liquid production air separation device according to claim 1, characterized in that: An external fan is installed at one end of the heat exhaust pipe (6).

Images