Air ejector

Abstract

The utility model belongs to the technical field of ejectors, and particularly relates to an air ejector which comprises a first shell, one end of the first shell and a second shell are fixedly installed, the other end of the first shell and a nozzle are fixedly installed, a phthalic anhydride inlet pipeline is fixed to the lower end of the first shell, a filtering component is arranged in the nozzle, and filtering cotton and dehumidizer are arranged in the filtering component. The filtering cotton can remove impurities in the air and prevent the impurities from polluting phthalic anhydride, the dehumidifying agent is arranged in the filtering part and can remove water vapor in the air, the problem that phthalic anhydride and water vapor return acid is solved, corrosion to equipment and pipelines is avoided, meanwhile, a series of problems that crystallization blocks the equipment and the like are solved, the vacuum process is optimized, and the production efficiency is improved. The production period is prolonged, the long-period safety and stability of production are stabilized, and great operation benefits are brought.

Description

Technical Field

[0001] The utility model belongs to the technical field of injectors, and in particular relates to an air injector. Background Art

[0002] Traditional ejectors use water vapor as the medium, which easily reacts with phthalic anhydride vapor to generate benzoic acid, which corrodes equipment and pipelines. Even if air is used as the medium, a small amount of water vapor in the air will react with phthalic anhydride vapor.

[0003] For example, the patent application number CN201720610146.7 is a steam ejector, comprising a conical cylinder, a porous plate, an isolation tube and a mixing tube, wherein one end of the mixing tube is provided with a step hole, and the other end is provided with a plurality of mixing holes which are interconnected with the step hole; the porous plate is connected to the large diameter end of the conical cylinder and is located in the step hole of the mixing tube, and a central injection hole and peripheral injection holes are provided on the end face of the porous plate; the plurality of mixing holes on the mixing tube are respectively arranged in one-to-one correspondence with the central injection hole or the peripheral injection holes on the porous plate, and the central injection hole on the porous plate is connected to the mixing hole on the mixing tube via the isolation tube. However, the disadvantage of this technical solution is that water vapor is used as the medium. When phthalic anhydride vapor needs to be diffused, water vapor and phthalic anhydride vapor are easy to react to generate benzoic acid, which causes corrosion to equipment and pipelines. Even if air is replaced as the medium, a small amount of water vapor in the air will react with the phthalic anhydride vapor. Utility Model Content

[0004] The purpose of the utility model is to provide an air injector to solve the problems in the prior art. The specific technical solution is as follows:

[0005] An air ejector comprises a shell one, one end of which is fixedly mounted to a shell two, the other end of which is fixedly mounted to a nozzle, a phthalic anhydride inlet pipe is fixed to a lower end of the shell, a filter component is arranged in the nozzle, and filter cotton and a dehumidifier are arranged in the filter component.

[0006] Furthermore, the second outer surface of the shell is provided with a plurality of reinforcing ribs.

[0007] Furthermore, a rubber pad is provided at the connection between the shell 1 and the nozzle.

[0008] Furthermore, the filter component comprises a filter housing, the filter cotton is arranged in the filter housing, an air inlet channel is arranged in the nozzle, a connecting pipe is arranged outside the nozzle, and the filter housing is located in the air inlet channel.

[0009] Furthermore, a suction chamber is provided in the shell one, a mixing chamber is provided at the connection between the shell one and the shell two, and a boost chamber and a diffusion chamber are provided in the shell two.

[0010] Furthermore, a vacuum interlayer is provided on the shell corresponding to the suction chamber.

[0011] Furthermore, a guide plate is provided at the connection between the shell 1 and the phthalic anhydride inlet pipeline, and a throttling component is provided in the phthalic anhydride inlet pipeline.

[0012] Furthermore, the throttling component includes a turntable, which rotates in the phthalic anhydride inlet pipeline, a through hole is provided at the center of the turntable, a limiting groove is provided on the turntable, and a handle is provided on the side of the turntable, which extends out of the phthalic anhydride inlet pipeline.

[0013] Furthermore, the throttling component also includes six triangular blocks, and the lower ends of the six triangular blocks are each provided with a sliding block, and the sliding block slides in the limiting groove.

[0014] Furthermore, a limiting column is fixed on the upper end of the triangular block, and the limiting column slides in a long groove on the pressing plate, and the pressing plate is fixed in the phthalic anhydride inlet pipeline.

[0015] The advantages of the utility model are:

[0016] Air quickly enters the shell one from the nozzle, so that negative pressure is generated at the connection between the shell one and the phthalic anhydride inlet pipe. Phthalic anhydride enters the shell one through the phthalic anhydride inlet pipe. The air and phthalic anhydride are mixed at the connection between the first end of the shell one and the second shell, and then sprayed out at the front end of the shell two. A filter component is arranged inside the nozzle. The filter cotton can remove impurities in the air to prevent the impurities from polluting the phthalic anhydride. A dehumidifier is arranged inside the filter component. The dehumidifier can remove water vapor in the air, solve the problem of acid return of phthalic anhydride and water vapor, avoid corrosion to equipment and pipelines, and solve a series of problems such as blockage of equipment by crystallization, optimize the vacuum process, extend the production cycle, stabilize the long-term safety and stability of production, and bring greater operating benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0018] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0019] Figure 3 The overall structure of the utility model is shown in FIG. Figure 3 ;

[0020] Figure 4 The throttling component structure of the utility model is shown in FIG. Figure 1 ;

[0021] Figure 5 The throttling component structure of the utility model is shown in FIG. Figure 2 ;

[0022] Figure 6 The throttling component structure of the utility model is shown in FIG. Figure 3 ;

[0023] Figure 7 The throttling component structure of the utility model is shown in FIG. Figure 4 ;

[0024] Description of the markings in the figure:

[0025] Shell 1 1; Shell 2 2; Reinforcement rib 3; Nozzle 4; Rubber pad 5; Connecting pipe 6; Filter shell 7; Filter cotton 8; Air inlet channel 9; Suction chamber 10; Vacuum interlayer 11; Guide plate 12; Mixing chamber 13; Pressurization chamber 14; Diffuser chamber 15; Phthalic anhydride inlet pipe 16; Handle 17; Turntable 18; Through hole 19; Limiting groove 20; Slider 21; Triangular block 22; Limiting column 23; Pressing plate 24; Long groove 25. DETAILED DESCRIPTION

[0026] The technical solution of the utility model will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of 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.

[0027] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying 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 limiting the present invention. In addition, the terms "first", "second", and "third" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0028] Embodiment 1

[0029] like Figure 1-7 As shown, an air ejector comprises a housing 1, one end of the housing 1 is fixedly mounted to a housing 2, the other end of the housing 1 is fixedly mounted to a nozzle 4, a phthalic anhydride inlet pipe 16 is fixed to the lower end of the housing 1, a filter component is arranged in the nozzle 4, and a filter cotton 8 and a dehumidifier are arranged in the filter component;

[0030] The working principle of the above technical solution is as follows: air quickly enters the shell 1 from the nozzle 4, so that negative pressure is generated at the connection between the shell 1 and the phthalic anhydride inlet pipe 16, and the phthalic anhydride enters the shell 1 through the phthalic anhydride inlet pipe 16. The air and the phthalic anhydride are mixed at the connection between one end of the shell 1 and the shell 2, and then sprayed out at the front end of the shell 2. A filter component is arranged inside the nozzle 4, and the filter component can remove impurities in the air to prevent the impurities from contaminating the phthalic anhydride. A dehumidifier is arranged inside the filter component, and the dehumidifier can remove water vapor in the air, thereby solving the problem of acid return of phthalic anhydride and water vapor, avoiding corrosion to equipment and pipelines, and solving a series of problems such as blockage of equipment by crystallization, optimizing the vacuum process, extending the production cycle, stabilizing the long-term safety and stability of production, and bringing greater operating benefits.

[0031] The vacuum ejector of the light component tower is designed to use a steam ejector. In actual production, the phthalic anhydride vapor extracted from the light component tower generates benzoic acid after coming into contact with the vacuum medium vapor, causing corrosion to the subsequent thermal storage oxidation furnace (i.e., incinerator) and its pipelines, and generates crystals in the thermal storage oxidation furnace, clogging the pores of the thermal storage filler and causing an increase in system pressure. At the same time, due to the presence of water vapor, after entering the incinerator, it affects the combustion effect of the exhaust gas, which has a significant impact on the stable operation of the production unit.

[0032] Embodiment 2

[0033] like Figure 1-7 As shown, the outer surface of the shell 2 is provided with a plurality of reinforcing ribs 3;

[0034] The working principle of the above technical solution: the outer shell 2 is relatively long and easy to bend, and the plurality of reinforcing ribs 3 can protect the outer shell 2, making the outer shell 2 more solid and durable.

[0035] Embodiment 3

[0036] like Figure 1-7 As shown, a rubber pad 5 is provided at the connection between the housing 1 and the nozzle 4;

[0037] The working principle of the above technical solution is as follows: the rubber pad 5 can increase the sealing of the connection between the housing 1 and the nozzle 4, and prevent air from overflowing from the connection between the housing 1 and the nozzle 4.

[0038] Embodiment 4

[0039] like Figure 1-7 As shown, the filter component includes a filter housing 7, a filter cotton 8 is arranged in the filter housing 7, an air inlet channel 9 is arranged in the nozzle 4, a connecting pipe 6 is arranged outside the nozzle 4, and the filter housing 7 is located in the air inlet channel 9;

[0040] The working principle of the above technical solution is as follows: the nozzle 4 is connected to the external air injection equipment through the connecting pipe 6, so that the filter housing 7 and the filter cotton 8 are encapsulated in the nozzle 4. The filter housing 7 is provided with the filter cotton 8, and the filter cotton 8 can remove impurities in the air to prevent the impurities from contaminating the phthalic anhydride steam.

[0041] Embodiment 5

[0042] like Figure 1-7 As shown, the housing 1 is provided with a suction chamber 10, a mixing chamber 13 is provided at the connection between the housing 1 and the housing 2, and a boost chamber 14 and a diffusion chamber 15 are provided in the housing 2;

[0043] The working principle of the above technical solution is as follows: air quickly enters the suction chamber 10 from the nozzle 4, so that negative pressure is generated at the connection between the shell 1 and the phthalic anhydride inlet pipe 16, and phthalic anhydride enters the suction chamber 10 through the phthalic anhydride inlet pipe 16. The air and phthalic anhydride are mixed in the mixing chamber, pressurized in the boosting chamber 14, and decompressed in the diffusion chamber 15 to diffuse out.

[0044] Embodiment 6

[0045] like Figure 1-7 As shown, a vacuum interlayer 11 is provided on the housing 1 corresponding to the suction chamber 10;

[0046] The working principle of the above technical solution is: the vacuum interlayer 11 can reduce the noise generated when the air and phthalic anhydride flow.

[0047] Embodiment 7

[0048] like Figure 1-7 As shown, a guide plate 12 is provided at the connection between the housing 1 and the phthalic anhydride inlet pipe 16, and a throttling component is provided in the phthalic anhydride inlet pipe 16;

[0049] The working principle of the above technical solution is that the guide plate 12 can prevent the air entering the suction chamber 10 from mistakenly entering the phthalic anhydride inlet pipe 16.

[0050] Embodiment 8

[0051] like Figure 1-7 As shown, the throttling component includes a rotating disk 18, which rotates in the phthalic anhydride inlet pipe 16, a through hole 19 is provided at the center of the rotating disk 18, a limiting groove 20 is provided on the rotating disk 18, and a handle 17 is provided on the side of the rotating disk 18, and the handle 17 extends out of the phthalic anhydride inlet pipe 16;

[0052] The throttling component further includes six triangular blocks 22, each of which has a slider 21 at its lower end, and the slider 21 slides in the limiting groove 20;

[0053] The upper end of the triangular block 22 is fixed with a limiting column 23, the limiting column 23 slides in a long groove 25 on a pressing plate 24, and the pressing plate 24 is fixed in the phthalic anhydride inlet pipe 16;

[0054] The working principle of the above technical solution is: turning the handle 17 drives the turntable 18 to rotate, drives the limit groove 20 to move with the turntable 18, drives the slider 21 to slide in the limit groove 20, drives the limit column 23 to move in the long groove 25 on the pressure plate 24, drives the six triangular blocks 22 to rotate, thereby changing the exposed area of ​​the through hole 19, and thereby changing the amount of phthalic anhydride passing through.

[0055] It is understood that the present invention is described by some embodiments, and those skilled in the art are aware that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. An air ejector, characterized in that: The invention comprises a shell one (1), one end of the shell one (1) is fixedly mounted on a shell two (2), the other end of the shell one (1) is fixedly mounted on a nozzle (4), a phthalic anhydride inlet pipe (16) is fixedly mounted on the lower end of the shell one (1), a filter component is arranged inside the nozzle (4), and filter cotton (8) and a dehumidifier are arranged inside the filter component.

2. An air injector according to claim 1, characterized in that: The outer surface of the second shell (2) is provided with a plurality of reinforcing ribs (3).

3. An air injector according to claim 1, characterized in that: A rubber pad (5) is provided at the connection between the shell 1 (1) and the nozzle (4).

4. An air injector according to claim 1, characterized in that: The filter component comprises a filter housing (7), filter cotton (8) is arranged in the filter housing (7), an air inlet channel (9) is arranged in the nozzle (4), a connecting pipe (6) is arranged outside the nozzle (4), and the filter housing (7) is located in the air inlet channel (9).

5. An air injector according to claim 1, characterized in that: The first shell (1) is provided with a suction chamber (10), the connection between the first shell (1) and the second shell (2) is provided with a mixing chamber (13), and the second shell (2) is provided with a boost chamber (14) and a diffusion chamber (15).

6. An air injector according to claim 5, characterized in that: A vacuum interlayer (11) is provided on the shell (1) corresponding to the suction chamber (10).

7. An air injector according to claim 1, characterized in that: A guide plate (12) is provided at the connection between the shell 1 (1) and the phthalic anhydride inlet pipe (16), and a throttling component is provided in the phthalic anhydride inlet pipe (16).

8. An air injector according to claim 7, characterized in that: The throttling component comprises a rotating disk (18), which rotates in the phthalic anhydride inlet pipe (16), a through hole (19) is provided at the center of the rotating disk (18), a limiting groove (20) is provided on the rotating disk (18), and a handle (17) is provided on the side of the rotating disk (18), and the handle (17) extends out of the phthalic anhydride inlet pipe (16).

9. An air injector according to claim 8, characterized in that: The throttling component also includes six triangular blocks (22), each of which is provided with a slider (21) at the lower end, and the slider (21) slides in the limiting groove (20).

10. An air injector according to claim 9, characterized in that: A limiting column (23) is fixed on the upper end of the triangular block (22), and the limiting column (23) slides in a long groove (25) on a pressing plate (24), and the pressing plate (24) is fixed in the phthalic anhydride inlet pipeline (16).

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