Air preheating mechanism

Abstract

The utility model relates to the technical field of air preheating, and in particular to an air preheating mechanism, wherein the technical scheme includes a base plate and a filter box, wherein the upper end of the base plate is provided with a first heating box and a second heating box, wherein the upper ends of the first heating box and the second heating box are provided with a top plate, wherein electric heating tubes distributed in an array are provided between the base plate and the top plate, wherein the electric heating tubes are located in the first heating box and the second heating box, wherein a connecting tube is provided at the lower position of the side end surface of the first heating box and the second heating box, wherein both ends of the connecting tube are connected with the first heating box and the second heating box, wherein the filter box is provided at the upper end of the top plate, wherein an air inlet pipe is provided at the upper end of the filter box, wherein an installation port is provided at the front end of the filter box, and a filter screen is provided from the installation port into the filter box. The utility model has the advantages of being able to fully preheat the air, and being able to filter and remove dust from the incoming air, thereby improving the quality of gas preparation.

Description

Technical Field

[0001] The utility model relates to the technical field of air preheating, in particular to an air preheating mechanism. Background Art

[0002] An air separation unit is a device that uses the vaporization properties of substances at different temperatures to separate mixed gases into single gases. It is an indispensable key equipment in the chemical, environmental protection and other industries. An air separation unit consists of compressors, coolers, heat exchangers and other main equipment.

[0003] During the operation of the air separation device, single gases such as oxygen and nitrogen obtained after air separation are liquefied for separation. However, due to the low temperature of the gas, the separation effect of the three gases of oxygen, nitrogen and argon is weakened, which causes inconvenience to the preparation of the gas. Therefore, the utility model provides an air preheating mechanism. Utility Model Content

[0004] The purpose of the utility model is to provide an air preheating mechanism, which has the advantages of being able to fully preheat the air and filter and remove dust from the incoming air, thereby improving the quality of gas preparation and solving the problems raised by the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an air preheating mechanism, comprising a base plate and a filter box, a first heating box and a second heating box are installed on the upper end of the base plate, the first heating box and the second heating box are symmetrically distributed, a top plate is installed on the upper ends of the first heating box and the second heating box, electric heating tubes distributed in an array are installed between the base plate and the top plate, the electric heating tubes are located in the first heating box and the second heating box, a connecting pipe is installed at the lower position of the side end surfaces of the first heating box and the second heating box, both ends of the connecting pipe are connected with the first heating box and the second heating box, the filter box is installed at the upper end of the top plate, an air inlet pipe is arranged at the upper end of the filter box, an installation port is opened at the front end of the filter box, and a filter is installed from the installation port into the filter box.

[0006] When using the air preheating mechanism of the utility model,

[0007] The air enters the filter box from the air intake pipe, and can be filtered through the filter to filter out impurities in the air. The filtered air can enter the first heating box, and can be heated by the electric heating pipe. The air heated once can then enter the second heating box through the connecting pipe, and can be heated for the second time by the electric heating pipe in the second heating box. The air heated for the second time can be discharged from the exhaust pipe.

[0008] Preferably, a supporting base is installed at the lower end of the base plate, and there are four supporting bases in total, and the four supporting bases are distributed in an array with respect to the base plate.

[0009] Preferably, an exhaust pipe is embedded and installed on one side of the upper end surface of the base plate, and the exhaust pipe is connected to the second heating box.

[0010] Preferably, support columns are welded between the base plate and the top plate, and two support columns are provided and symmetrically distributed.

[0011] Preferably, a connecting pipe is installed at the side end of the filter box, and the end of the connecting pipe is connected to the first heating box.

[0012] Preferably, a sealing cover plate is installed at the front end of the filter screen, and mounting holes distributed in an array are opened on the sealing cover plate. Threaded holes corresponding to the mounting holes are opened at the front end of the filter box, and bolts are installed in the mounting holes and the inner threads of the threaded holes.

[0013] Preferably, the first heating box and the second heating box each include an outer shell and an inner shell, and a heat preservation cavity is formed between the outer shell and the inner shell.

[0014] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0015] 1. The air enters the filter box from the air inlet pipe, and the air can be filtered through the filter net to filter out impurities in the air, which is beneficial to ensure the quality of gas preparation and the stable operation of the air separation unit.

[0016] 2. The filtered air can enter the first heating box, and the electric heating tube can heat the air entering the first heating box. The air heated once can then enter the second heating box through the connecting tube and be heated again. By heating the air twice, the air can be fully preheated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a front view structural schematic diagram of the utility model;

[0018] Figure 2 It is a cross-sectional structural schematic diagram of the utility model;

[0019] Figure 3 It is a partial structural schematic diagram of the utility model.

[0020] The reference numerals and names in the figures are as follows:

[0021] 101. Base plate; 102. Support base; 103. Support column; 104. Top plate; 105. Exhaust pipe; 201. First heating box; 202. Second heating box; 203. Connecting pipe; 204. Outer shell; 205. Insulation chamber; 206. Inner shell; 207. Electric heating tube; 301. Filter box; 302. Inlet pipe; 303. Connecting pipe; 304. Sealing cover plate; 305. Installation port; 306. Filter. DETAILED DESCRIPTION

[0022] 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. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] Example

[0024] See also Figures 1 to 3 The utility model provides an embodiment: an air preheating mechanism, comprising:

[0025] A base plate 101 and a filter box 301, wherein a first heating box 201 and a second heating box 202 are installed at the upper end of the base plate 101, and the first heating box 201 and the second heating box 202 are symmetrically distributed, and a top plate 104 is installed at the upper ends of the first heating box 201 and the second heating box 202, and electric heating tubes 207 distributed in an array are installed between the base plate 101 and the top plate 104, and the electric heating tubes 207 are located in the first heating box 201 and the second heating box 202, and a connecting pipe 203 is installed at the lower position of the side end surface of the first heating box 201 and the second heating box 202, and both ends of the connecting pipe 203 are connected with the first heating box 201 and the second heating box 202, and the filter box 301 is installed at the upper end of the top plate 104, and an air inlet pipe 302 is arranged at the upper end of the filter box 301, and a mounting port 305 is opened at the front end of the filter box 301, and a filter screen 306 is installed from the mounting port 305 into the filter box 301.

[0026] In this embodiment, air enters the filter box 301 from the air inlet pipe 302, and the air can be filtered through the filter 306 to filter impurities in the air. The filtered air can enter the first heating box 201, and the air entering the first heating box 201 can be heated by the electric heating tube 207. The air heated once can then enter the second heating box 202 through the connecting pipe 203, and the air can be heated for the second time by the electric heating tube 207 in the second heating box 202. The air after the second heating can be discharged from the exhaust pipe 105.

[0027] Furthermore,

[0028] A support base 102 is installed at the lower end of the base plate 101. There are four support bases 102 in total, and the four support bases 102 are distributed in an array with respect to the base plate 101. The support base 102 can support the base plate 101.

[0029] Furthermore,

[0030] An exhaust pipe 105 is embedded and installed on one side of the upper end surface of the base plate 101, and the exhaust pipe 105 is connected to the second heating box 202. The heated air can be discharged from the exhaust pipe 105.

[0031] Furthermore,

[0032] A support column 103 is welded between the base plate 101 and the top plate 104 , and two support columns 103 are symmetrically arranged. The support columns 103 can support the top plate 104 .

[0033] Furthermore,

[0034] A connecting pipe 303 is installed at the side end of the filter box 301, and the end of the connecting pipe 303 is connected to the first heating box 201. The connection pipe 303 can allow the filtered air to enter the first heating box 201.

[0035] Furthermore,

[0036] The front end of the filter 306 is provided with a sealing cover plate 304, which is provided with mounting holes distributed in an array, and the front end of the filter box 301 is provided with threaded holes corresponding to the mounting holes, and bolts are installed in the mounting holes and the threaded holes. The setting of the sealing cover plate 304 can install the filter 306, and when the filter 306 needs to be cleaned, the bolts can be removed to facilitate the removal of the filter 306 for cleaning.

[0037] Furthermore,

[0038] The first heating box 201 and the second heating box 202 each include an outer shell 204 and an inner shell 206, and a heat preservation chamber 205 is formed between the outer shell 204 and the inner shell 206. The heat preservation chamber 205 is used to keep the first heating box 201 and the second heating box 202 warm and insulate, so as to prevent the heat loss in the first heating box 201 and the second heating box 202.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. An air preheating mechanism, comprising a base plate (101) and a filter box (301), characterized in that: A first heating box (201) and a second heating box (202) are installed at the upper end of the base plate (101), and the first heating box (201) and the second heating box (202) are symmetrically distributed. A top plate (104) is installed at the upper ends of the first heating box (201) and the second heating box (202). Electric heating tubes (207) distributed in an array are installed between the base plate (101) and the top plate (104). The electric heating tubes (207) are located in the first heating box (201) and the second heating box (202). A connecting pipe (203) is installed at the lower part of the side end surface of the heating box (201) and the second heating box (202), and both ends of the connecting pipe (203) are connected to the first heating box (201) and the second heating box (202). The filter box (301) is installed at the upper end of the top plate (104), and an air intake pipe (302) is arranged at the upper end of the filter box (301). The front end of the filter box (301) is provided with an installation opening (305), and a filter screen (306) is installed from the installation opening (305) into the filter box (301).

2. An air preheating mechanism according to claim 1, characterized in that: A supporting base (102) is installed at the lower end of the base plate (101), and there are four supporting bases (102) in total, and the four supporting bases (102) are distributed in an array with respect to the base plate (101).

3. The air preheating mechanism according to claim 1, characterized in that: An exhaust pipe (105) is embedded and installed on one side of the upper end surface of the base plate (101), and the exhaust pipe (105) is connected to the second heating box (202).

4. The air preheating mechanism according to claim 1, characterized in that: A support column (103) is welded between the base plate (101) and the top plate (104), and two support columns (103) are provided and are symmetrically distributed.

5. The air preheating mechanism according to claim 1, characterized in that: A connecting pipe (303) is installed at the side end of the filter box (301), and the end of the connecting pipe (303) is connected to the first heating box (201).

6. The air preheating mechanism according to claim 1, characterized in that: A sealing cover plate (304) is installed at the front end of the filter screen (306), and mounting holes distributed in an array are provided on the sealing cover plate (304). Threaded holes corresponding to the mounting holes are provided at the front end of the filter box (301), and bolts are installed in the mounting holes and the inner threads of the threaded holes.

7. The air preheating mechanism according to claim 1, characterized in that: The first heating box (201) and the second heating box (202) both comprise an outer shell (204) and an inner shell (206), and a heat preservation chamber (205) is formed between the outer shell (204) and the inner shell (206).

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