Integral pry for NMP (N-Methyl Pyrrolidone) recovery

Abstract

The utility model relates to the field of an integral pry, in particular to an integral pry for NMP (N-Methyl Pyrrolidone) recovery. The utility model provides the integral pry for NMP (N-Methyl Pyrrolidone) recovery, which can prevent an air pipe from shaking left and right to generate displacement, reduce the vibration amplitude of the air pipe, improve the integral stability and reduce noise transmission. An integral pry for NMP (N-Methyl Pyrrolidone) recovery comprises an exhaust fan, a surface air cooler assembly, a gas-gas heat exchanger, a medium efficiency filter assembly, an air return fan, a skid-mounted base and the like, the right side of the top of the skid-mounted base is connected with the exhaust fan, the left side of the top of the skid-mounted base is connected with the surface air cooler assembly, the exhaust fan is connected with the surface air cooler assembly, and the air-gas heat exchanger is connected with the medium efficiency filter assembly. And the middle part of the skid-mounted base is connected with a medium-efficiency filter assembly. The air pipe is limited through the limiting frame, the first damper is used for damping the air pipe, the air pipe is prevented from shaking left and right to generate displacement, and therefore the vibration amplitude of the air pipe is reduced, the overall stability is improved, noise transmission is reduced, and the working environment is improved.

Description

Technical Field

[0001] The utility model relates to the field of integral skids, in particular to an integral skid used for NMP recovery. Background Art

[0002] NMP is the abbreviation of N-methylpyrrolidone, which is an organic solvent. The NMP recovery skid is a system that recovers, treats and reuses NMP (N-methylpyrrolidone) from industrial production processes. Among them, the air duct is an important part of the skid, which is mainly responsible for conveying and regulating gas.

[0003] The existing integrated skid for NMP recovery integrates the surface cooler assembly, air-to-air heat exchanger, medium-efficiency filter assembly, liquid collection box, exhaust fan, return air fan and air duct on a skid body. The existing equipment occupies a large space, the connecting air duct is long, and has no shock absorption function. During the operation of the exhaust fan, the air duct will vibrate, thereby affecting the overall stability. The air duct will also generate noise, affecting the working environment.

[0004] Therefore, it is necessary to design an integral skid for NMP recovery that can prevent the air duct from shaking left and right and causing displacement, reduce the vibration amplitude of the air duct, improve the overall stability, and reduce noise transmission. Utility Model Content

[0005] In order to overcome the shortcomings of existing equipment that occupies a large space, the connecting air duct is long, and has no shock absorption function, the air duct will vibrate during the operation of the exhaust fan, thereby affecting the overall stability, and the air duct will also generate noise, affecting the working environment. The technical problem to be solved is: to provide an overall skid for NMP recovery that can prevent the air duct from shaking left and right and causing displacement, reduce the vibration amplitude of the air duct, improve the overall stability, and reduce noise transmission.

[0006] The technical solution is: an integral skid for NMP recovery, including an exhaust fan, a surface cooler assembly, an air-to-air heat exchanger, a medium-efficiency filter assembly, a return air fan, a skid-mounted base, an air duct and an anti-shift mechanism. The exhaust fan is connected to the right side of the top of the skid-mounted base, the surface cooler assembly is connected to the left side of the top of the skid-mounted base, the exhaust fan is connected to the surface cooler assembly, the medium-efficiency filter assembly is connected to the middle of the skid-mounted base, an air duct is connected between the medium-efficiency filter assembly and the surface cooler assembly, an air-to-air heat exchanger is connected between the exhaust fan and the air duct, the air-to-air heat exchanger is connected to the skid-mounted base, the return air fan is connected to the right side of the medium-efficiency filter assembly, the return air fan is connected to the skid-mounted base, and an anti-shift mechanism for preventing the air duct from shaking and displacing is provided on the upper part of the skid-mounted base.

[0007] As an improvement to the above solution, an air inlet is opened on the right side of the exhaust fan to facilitate the entry of exhaust gas.

[0008] As an improvement of the above scheme, a liquid collecting tank is also included. The liquid collecting tank is connected to the left side of the middle part of the skid-mounted base. The liquid collecting tank is respectively connected to the exhaust fan, air-to-air heat exchanger, medium efficiency filter assembly and return air fan, so as to facilitate the collection of waste liquid generated by the exhaust fan, air-to-air heat exchanger, medium efficiency filter assembly and return air fan.

[0009] As an improvement of the above-mentioned scheme, the anti-displacement mechanism includes a support frame, a limit frame and a first damper. The upper part of the skid-mounted base is connected to two left and right support frames, the limit frame is connected between the support frames, the limit frame is slidably connected to the support frame, and two front and rear first dampers are connected between the limit frame and the support frame; the air duct is limited by the limit frame, so that the first damper reduces the vibration of the air duct to prevent the air duct from shaking left and right and displacing.

[0010] As an improvement of the above scheme, a shock absorbing mechanism is also included, which includes a guide rod, a contact frame and a second damper. The limit frame is connected to two front and rear guide rods on the left and right sides, and the contact frame is slidably connected between adjacent guide rods. The contact frame is connected to the air duct, and the contact frame and the adjacent guide rods are connected to two front and rear second dampers. The contact frame contacts the air duct, and then the second damper reduces the vibration of the air duct to prevent the air duct from shaking up and down.

[0011] As an improvement of the above solution, a telescopic sleeve is connected between the medium efficiency filter assembly and the return air fan.

[0012] The utility model has the following advantages: 1. The utility model limits the air duct by a limiting frame, so that the first damper reduces the vibration of the air duct to prevent the air duct from shaking left and right and shifting, thereby reducing the vibration amplitude of the air duct, improving the overall stability, reducing noise transmission, and improving the working environment.

[0013] 2. The utility model contacts the air duct through the contact frame, and then the second damper reduces the vibration of the air duct, thereby preventing the air duct from shaking up and down, preventing the air duct from being affected by vibration and causing wear, reducing the vibration amplitude of the device, and extending the service life of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a partial three-dimensional structural schematic diagram of the utility model.

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the anti-movement mechanism of the utility model.

[0017] Figure 4 It is a schematic diagram of the first three-dimensional structure of the shock absorbing mechanism of the utility model.

[0018] Figure 5 It is a schematic diagram of the second three-dimensional structure of the shock absorbing mechanism of the utility model.

[0019] The reference numbers in the figure are: 1. exhaust fan, 2. surface cooler assembly, 3. air-to-air heat exchanger, 4. medium efficiency filter assembly, 5. return air fan, 6. liquid collecting tank, 7. skid-mounted base, 8. air duct, 9. anti-shift mechanism, 91. support frame, 92. limit frame, 93. first damper, 10. shock absorbing mechanism, 101. guide rod, 102. contact frame, 103. second damper. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical solution and advantages of the utility model clearer, the utility model will be further described in detail with reference to the accompanying drawings. It is hereby stated that the directional words such as up, down, left, right, front, back, inside, outside, etc. that appear or will appear in the text of the utility model are only based on the accompanying drawings of the utility model, and are not specific limitations of the utility model.

[0021] An integral skid for NMP recovery, such as Figure 1-Figure 4 As shown, it includes an exhaust fan 1, a surface cooler assembly 2, an air-to-air heat exchanger 3, a medium-efficiency filter assembly 4, a return air fan 5, a skid-mounted base 7, an air duct 8 and an anti-movement mechanism 9. The exhaust fan 1 is connected to the right side of the top of the skid-mounted base 7. An air inlet is opened on the right side of the exhaust fan 1 to facilitate the entry of exhaust gas. The surface cooler assembly 2 is connected to the left side of the top of the skid-mounted base 7. The exhaust fan 1 is connected to the surface cooler assembly 2. The medium-efficiency filter assembly 4 is connected to the middle of the skid-mounted base 7. The air duct 8 is connected between the medium-efficiency filter assembly 4 and the surface cooler assembly 2. The exhaust fan 1 and An air-to-air heat exchanger 3 is connected between the air ducts 8, the air-to-air heat exchanger 3 is connected to the skid-mounted base 7, a return air fan 5 is connected to the right side of the medium efficiency filter assembly 4, a telescopic sleeve is connected between the medium efficiency filter assembly 4 and the return air fan 5, and a liquid collecting box 6 is also included. The liquid collecting box 6 is connected to the left side of the middle part of the skid-mounted base 7, the liquid collecting box 6 is respectively connected to the exhaust fan 1, the air-to-air heat exchanger 3, the medium efficiency filter assembly 4 and the return air fan 5, the return air fan 5 is connected to the skid-mounted base 7, and an anti-shift mechanism 9 for preventing the air duct 8 from shaking and displacing is provided on the upper part of the skid-mounted base 7.

[0022] like Figure 1 , Figure 3 and Figure 4 As shown, the anti-movement mechanism 9 includes a support frame 91, a limit frame 92 and a first damper 93. The upper part of the skid-mounted base 7 is connected to two left and right support frames 91, and the limit frame 92 is connected between the support frames 91. The limit frame 92 is slidably connected to the support frame 91, and two front and rear first dampers 93 are connected between the limit frame 92 and the support frame 91.

[0023] like Figure 1 , Figure 4 and Figure 5 As shown, a shock absorbing mechanism 10 is also included, and the shock absorbing mechanism 10 includes a guide rod 101, a contact frame 102 and a second damper 103. The left and right sides of the limit frame 92 are connected to the front and rear guide rods 101, and the contact frames 102 are slidably connected between adjacent guide rods 101. The contact frame 102 is connected to the air duct 8, and the front and rear second dampers 103 are connected between the contact frame 102 and the adjacent guide rods 101.

[0024] When NMP needs to be recovered, this device can be used. The tail gas of the coating machine enters the exhaust fan 1 through the air inlet, passes through the exhaust fan 1 through the air duct 8 to enter the hot side inlet of the air-to-air heat exchanger 3, and then enters the surface cooler component 2, and then enters the medium efficiency filter component 4 through the cold side inlet of the air-to-air heat exchanger 3. The gas recovered after filtration enters the coating machine system through the return air fan 5 for recycling. In this process, the recovery sequence of the air-to-air heat exchanger 3, the surface cooler and the medium efficiency filter for NMP is reasonably arranged, which effectively improves the recovery rate of NMP, and the waste liquid generated during the recovery process of each equipment can be directly discharged into the liquid collecting box 6 and uniformly discharged to the discharge area. The whole work chain makes the NMP recovery process clearer and more reasonable. During the operation of the exhaust fan 1, The air duct 8 is limited by the limit frame 92, so that the first damper 93 can reduce the vibration of the air duct 8 to prevent the air duct 8 from shaking left and right and displacing, thereby reducing the vibration amplitude of the air duct 8, improving the overall stability, reducing noise transmission, and improving the working environment. At the same time, the contact frame 102 contacts the air duct 8, and then the second damper 103 reduces the vibration of the air duct 8, thereby preventing the air duct 8 from shaking up and down, preventing the air duct 8 from being affected by vibration and causing wear, reducing the vibration amplitude of the device, and extending the service life of the device. During the recycling process, the waste liquid generated by the exhaust fan 1, the air-to-air heat exchanger 3, the medium efficiency filter assembly 4 and the return air fan 5 can be discharged into the liquid collection box 6 for centralized treatment. After the recycling is completed, the exhaust gas of the coating machine no longer enters the exhaust fan 1.

[0025] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An integral skid for NMP recovery, characterized in that: The invention comprises an exhaust fan (1), a surface cooler assembly (2), an air-to-air heat exchanger (3), a medium-efficiency filter assembly (4), a return air fan (5), a skid-mounted base (7), an air duct (8) and an anti-movement mechanism (9). The right side of the top of the skid-mounted base (7) is connected to the exhaust fan (1), the left side of the top of the skid-mounted base (7) is connected to the surface cooler assembly (2), the exhaust fan (1) is connected to the surface cooler assembly (2), and the middle of the skid-mounted base (7) is connected to the medium-efficiency filter assembly ( 4), an air duct (8) is connected between the medium-efficiency filter assembly (4) and the surface cooler assembly (2), an air-to-air heat exchanger (3) is connected between the exhaust fan (1) and the air duct (8), the air-to-air heat exchanger (3) is connected to the skid-mounted base (7), a return air fan (5) is connected to the right side of the medium-efficiency filter assembly (4), the return air fan (5) is connected to the skid-mounted base (7), and an anti-movement mechanism (9) for preventing the air duct (8) from shaking and moving is provided on the upper part of the skid-mounted base (7).

2. The overall skid for NMP recovery as claimed in claim 1, characterized in that: An air inlet is provided on the right side of the exhaust fan (1) to facilitate the entry of exhaust gas.

3. An integral skid for NMP recovery as claimed in claim 2, characterized in that: The invention also comprises a liquid collecting box (6), which is connected to the left side of the middle part of the skid-mounted base (7), and the liquid collecting box (6) is respectively connected to the exhaust fan (1), the air-to-air heat exchanger (3), the medium-efficiency filter assembly (4) and the return air fan (5), so as to facilitate the collection of waste liquid generated by the exhaust fan (1), the air-to-air heat exchanger (3), the medium-efficiency filter assembly (4) and the return air fan (5).

4. An integral skid for NMP recovery as claimed in claim 3, characterized in that: The anti-displacement mechanism (9) comprises a support frame (91), a limiting frame (92) and a first damper (93); the upper part of the skid-mounted base (7) is connected to two left and right support frames (91); the limiting frame (92) is connected between the support frames (91); the limiting frame (92) and the support frame (91) are slidably connected; and two front and rear first dampers (93) are connected between the limiting frame (92) and the support frame (91); the air duct (8) is limited by the limiting frame (92), so that the first damper (93) reduces the vibration of the air duct (8) to prevent the air duct (8) from shaking left and right and causing displacement.

5. An integral skid for NMP recovery as claimed in claim 4, characterized in that: The invention also comprises a shock absorbing mechanism (10), the shock absorbing mechanism (10) comprising a guide rod (101), a contact frame (102) and a second damper (103); the left and right sides of the limit frame (92) are connected to two front and rear guide rods (101); adjacent guide rods (101) are slidably connected to the contact frame (102); the contact frame (102) is connected to the air duct (8); and the front and rear second dampers (103) are connected between the contact frame (102) and the adjacent guide rods (101); the contact frame (102) contacts the air duct (8), and then the second damper (103) damps the air duct (8) to prevent the air duct (8) from shaking up and down.

6. An integral skid for NMP recovery as claimed in claim 5, characterized in that: A telescopic sleeve is connected between the medium-efficiency filter assembly (4) and the return air fan (5).

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