A waste heat exchange and recovery device for steam from plasticizer production

Abstract

The present invention relates to the technical field of energy-saving heat exchange equipment, and discloses a waste heat exchange and recovery device for plasticizer production steam, comprising a box body, a recovery component is fixedly provided on the box body, an air intake box is fixedly provided on one side of the recovery component, a solid box is fixedly provided on the other side, a filter is rotatably provided in the box body, the filter component comprises a filter assembly and a fixed cover, air ducts and dust exhaust pipes for discharging solid particles are fixedly connected on both sides of the fixed cover, a filter assembly is installed on the fixed cover, the filter assembly comprises an outer filter and an inner filter, and the filter hole diameter of the outer filter is smaller than that of the inner filter. The recovery device of the present invention first recovers and filters the plasticizer production steam to filter out solids with low calorie content, and then filters the clean plasticizer production steam, thereby saving energy, improving the efficiency of heat exchange, fully and quickly recovering the heat energy in the steam, ensuring that the heat energy is fully recycled and utilized, and the clean steam contacts the exchange component to recover the heat energy without causing damage to the exchange component.

Description

Technical Field

[0001] The invention relates to the technical field of energy-saving heat exchange equipment, in particular to a plasticizer production steam waste heat exchange recovery device. Background Art

[0002] Plasticizers are polymer material additives widely used in industrial production. During the production process, a large amount of high-temperature steam is generated, which contains solid plasticizer particles.

[0003] In the prior art, the name disclosed in the application number: 202123175846.3 is: a boiler waste heat recovery device for desulfurization and denitrification, the IPC classification number is: F28D1 / 00, which includes a waste heat recovery boiler, a waste heat absorption chamber arranged in the inner cavity of the waste heat recovery boiler, a top column is arranged on the top wall of the inner cavity of the waste heat absorption chamber, a reset spring is arranged in the inner cavity of the top column, a rack is arranged at the lower end of the inner cavity of the top column, a cross bar is arranged at the lower end of the rack, a first ring is arranged at both ends of the cross bar, a support column is arranged at the lower end of the first ring, a shovel is arranged at the lower end of the support column, and the inner cavity of the waste heat recovery boiler is filled with an aqueous solution.

[0004] However, in the prior art, such as the boiler waste heat recovery device mentioned in application number: 202123175846.3, the solid particles inside the gas are not filtered and recovered during the preheating recovery process, and the waste heat is directly recovered, which will result in incomplete waste heat recovery and the solids have been discharged. Therefore, it is necessary to design a plasticizer production steam waste heat exchange recovery equipment. Summary of the invention

[0005] The object of the present invention is to provide a waste heat exchange and recovery device for plasticizer production steam to solve the problems in the prior art.

[0006] The purpose of the present invention can be achieved through the following technical solutions:

[0007] A plasticizer production steam waste heat exchange recovery device comprises a box body, a recovery component is fixedly arranged on the box body, an air intake box is fixedly arranged on one side of the recovery component, and a solid box for recovering plasticizer is fixedly arranged on the other side;

[0008] A filter is rotatably provided in the box body, the filter comprises a filter assembly and a fixed cover, air ducts and dust exhaust pipes for discharging solid particles are fixedly connected to both sides of the fixed cover, a filter assembly is installed on the fixed cover, the filter assembly comprises an outer filter and an inner filter, and the filter hole diameter of the outer filter is smaller than that of the inner filter.

[0009] Furthermore, an air inlet pipe for recovering plasticizer to produce steam is fixedly provided at one end of the box body, supplementary pipes for supplementing steam are fixedly provided on both sides of the air inlet pipe, a one-way valve is fixedly provided on the supplementary pipe, and an exhaust pipe for exhausting gas is fixedly connected to one end of the supplementary pipe.

[0010] Furthermore, an exchange slot for installing a recovery component is provided in the box body, the filter element is located below the recovery component, exchange elements are fixedly provided on both sides of the filter element, a heat exchange plate is obliquely fixedly connected to one side of the exchange element, and an air guide groove is provided on the other side, and an air guide duct for connecting to the exhaust pipe is fixedly provided on the exhaust side of the exchange element.

[0011] Furthermore, an air intake groove is provided in the air intake box, one end of the air intake pipe is vertically in the air intake groove, the air intake groove is connected to an air storage groove, one side of the air intake groove is fixedly connected to the air duct, a cylinder is fixedly provided on the top of the air intake groove, an output end of the cylinder is fixedly connected to an air push plate, the air push plate slides in the air storage groove, and the lower part of the air push plate is rotatably arranged on the guide rod.

[0012] A sleeve rod is slidably connected to the guide rod, a spring one is fixed inside the sleeve rod, one end of the spring one is fixedly connected to the bottom of the guide rod, a conical block is fixedly connected to the bottom of the sleeve rod, and a gas relief groove for gas pressure relief is provided on the side of the conical block.

[0013] Furthermore, a mounting plate is fixedly provided in the solid box, a guide rod is fixedly provided on the mounting plate, a lead screw is rotatably provided on the mounting plate, a motor for driving is fixedly connected to one end of the lead screw, a filter basket for recovering plasticizer is slidably provided on the guide rod, the filter basket is threadedly connected to the lead screw, the solid box is filled with pure water, and one end of the dust exhaust pipe extends into the filter basket.

[0014] Furthermore, annular buckle plates are fixed at both ends of the fixed cover, dust hoppers are fixed at the bottom of the outer filter and the inner filter, and there are grooves on the sides of the air duct and the dust exhaust pipe for discharging solid particles. A sealing rod for controlling the on and off is slidably provided in the groove, and a lever is fixed at the end of the sealing rod.

[0015] Furthermore, a sealing cover is fixedly connected to the top of the filter assembly, an air film is fixedly connected inside the sealing cover and on the top of the inner filter, a moving rod is slidably provided on the sealing cover, a top plate is fixedly connected to the top end of the moving rod, and a pressure plate is fixedly provided at the other end.

[0016] The pressure plate is located above the air film, and two springs for support are fixedly connected between the top plate and the sealing cover. A side rod is fixedly provided on one side of the top plate, and a positioning hole is provided on the top of the top plate.

[0017] Furthermore, a rotating block is fixedly connected below the outer filter screen, a plurality of vertical grooves are provided on the side of the rotating block, the vertical grooves are located in the sealing cover, a limit plate is fixedly provided on the side of the rotating block, the limit plate slides against the annular buckle plate, an axle rod is fixedly connected below the rotating block, a driven wheel is fixedly connected to one end of the axle rod, a transmission belt is fixedly connected to the driven wheel, a driving wheel is connected to the transmission belt, and a connecting rod is fixedly connected to the driving wheel.

[0018] Furthermore, the recovery component includes a cover plate, symmetrically distributed air guide plates are fixedly connected to the bottom of the cover plate, the filter element is located between the air guide plates, an arc plate is fixedly connected to the square of the cover plate, the arc plate is located on one side of the air guide plate, a fan is rotatably installed between the arc plate and the air guide plate, and a fan is fixedly connected to a connecting rod.

[0019] A round tube is fixedly connected to the top of the cover plate and located on the sealing cover. A positioning rod is arranged in the round tube. The positioning hole is rotatably connected to the positioning rod. An arc slope is arranged at one end of the round tube. The side rod is slidably connected to the arc slope.

[0020] Furthermore, a base is fixedly provided in the exchange slot, an axle rod is rotatably mounted on the base, a second motor is fixedly provided on the base, an output end of the second motor is fixedly connected to a cross bar, open grooves are provided on both sides of the cross bar, and the open grooves cooperate with the shifting rod.

[0021] Beneficial effects of the present invention:

[0022] 1. The recovery equipment of the present invention first recovers and filters the plasticizer production steam to filter out the solids with low calorie content, and then filters the clean plasticizer production steam, thereby saving energy, improving the efficiency of heat exchange, fully and quickly recovering the heat energy in the steam, and ensuring that the heat energy is fully recovered and utilized;

[0023] 2. The recovery equipment of the present invention has a simple structure and is easy to use. It can filter the plasticizer production steam to recover heat energy, and the clean steam contacts the exchange element to recover heat energy without causing damage to the exchange element. The solid particles in the steam are recovered, and the solid particles are sent to the solid box, which can dissolve the solid particles and recover the undissolved plasticizer, saving production materials and energy. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below in conjunction with the accompanying drawings.

[0025] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0026] Figure 2 It is a schematic diagram of the structure of the recovery device of the present invention;

[0027] Figure 3 It is a schematic diagram of the internal structure of the recycling device of the present invention;

[0028] Figure 4 is a cross-sectional view of an air intake box of the present invention;

[0029] Figure 5 It is a schematic diagram of the solid box structure of the present invention;

[0030] Figure 6 It is a partial structural schematic diagram of the recovery equipment of the present invention;

[0031] Figure 7is a cross-sectional view of a partial structure of the recovery device of the present invention;

[0032] Figure 8 is a cross-sectional view of the recovery device of the present invention;

[0033] Fig. 9 The present invention Figure 8 The enlarged structural diagram at A in the middle;

[0034] Fig.10 The present invention Figure 8 The enlarged structural diagram at B in the middle;

[0035] Fig.11 It is a schematic diagram of the structure of the recycling component of the present invention;

[0036] Fig.12 The present invention Fig.11 The enlarged structural diagram at C in the middle;

[0037] Fig.13 It is a schematic cross-sectional structure diagram of the recovery device of the present invention;

[0038] Fig.14 The present invention Fig.13 Enlarged structural diagram at D in the middle. DETAILED DESCRIPTION

[0039] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0040] A waste heat exchange and recovery device for steam from plasticizer production is characterized by a heat exchange device for energy-saving production, and its IPC classification number is F28D1.

[0041] A waste heat exchange and recovery device for plasticizer production steam, such as Figure 1 As shown, the recovery device includes a box body 1, an air intake pipe 9 is fixedly provided at one end of the box body 1, a recovery component 2 is fixedly provided on the box body 1, an air intake box 3 is fixedly provided on one side of the recovery component 2, and a solid box 4 is fixedly provided on the other side.

[0042] Supplementary pipes 91 are fixedly provided on both sides of the air inlet pipe 9 , a one-way valve is fixedly provided on the supplementary pipe 91 , and one end of the supplementary pipe 91 is fixedly connected to an exhaust pipe 92 .

[0043] like Figure 2As shown, an exchange tank 11 is provided in the box body 1, and a filter element 6 is rotatably provided in the exchange tank 11. The filter element 6 is located below the recovery component 2, and exchange elements 8 are fixedly provided on both sides of the filter element 6 for heat exchange of clean plasticizer production steam, and an air duct 12 is fixedly provided on the exhaust side of the exchange element 8. The air duct 12 is used to receive the low-temperature gas discharged from the exchange element 8, and then the air duct 12 is connected to the exhaust pipe 92 for discharging the wind out of the recovery equipment.

[0044] like Figure 3 and Figure 4 As shown, a heat exchange plate 81 arranged obliquely is fixedly provided on one side of the exchange element 8, and an air guide groove 82 is provided on the other side.

[0045] In this embodiment, when the steam flow of the plasticizer passes through the exchange element 8, heat exchange occurs with the liquid pipeline in the exchange element 8 through the heat exchange principle. The heat exchange can be recovered to the pipeline liquid, and then the thermal energy of the liquid can be reused to recover the plasticizer to produce steam heat, thereby realizing energy-saving production of plasticizer.

[0046] In the present embodiment, if the intake pressure in the intake pipe 9 is relatively low during the process of gas being discharged from the exhaust pipe 92, the one-way valve can be manually controlled to open, and the gas in the exhaust pipe 92 can be discharged into the intake pipe 9 through the supplementary pipe 91. Part of the gas is supplied into the intake pipe 9 through the supplementary pipe 91 to ensure that the intake pipe 9 has sufficient intake pressure of the steam gas, thereby ensuring the stability of the gas pressure inside the equipment and improving the operating stability and efficiency of the equipment.

[0047] An air intake groove 31 is opened in the air intake box 3, one end of the air intake pipe 9 is vertically located in the air intake groove 31, the air intake groove 31 is connected to the air storage groove 32, an air duct 61 is fixedly provided on one side of the air intake groove 31, and a cylinder 30 is fixedly provided on the top of the air intake groove 31, and an output end of the cylinder 30 is fixedly connected to a push plate 33, the push plate 33 is slidably located in the air storage groove 32, and the lower part of the push plate 33 is rotatably set on the guide rod 34.

[0048] like Fig. 9 As shown, a sleeve rod 35 is slidably connected to the guide rod 34, a spring 36 is fixed inside the sleeve rod 35, one end of the spring 36 is fixedly connected to the bottom of the guide rod 34, and a conical block 37 is fixedly connected to the bottom of the sleeve rod 35, a venting groove 38 is provided on the side of the conical block 37, and the cylinder 30 pushes the conical block 37 to seal the end of the intake pipe 9 to prevent air intake.

[0049] When the pressure in the intake pipe 9 is too high, a small amount of gas is discharged from the air relief groove 38, which can squeeze the spring 36 to adjust the air pressure. When the conical block 37 is located above the intake pipe 9, the air flow will be diverted along the side of the conical block 37, and the spiral air relief groove 38 and the air flow will cause the conical block 37 to rotate.

[0050] like Figure 5-Figure 7 As shown, a mounting plate 41 is fixedly provided in the solid box 4, a guide rod 44 is fixedly provided on the mounting plate 41, a lead screw 43 is rotatably provided on the mounting plate 41, one end of the lead screw 43 is fixedly connected to a motor 1 for driving, a filter basket 42 is slidably provided on the guide rod 44, the filter basket 42 is threadedly connected to the lead screw 43, and a dust exhaust pipe 62 is installed on the filter basket 42.

[0051] The filter element 6 includes a filter assembly and a fixed cover 66. The two sides of the fixed cover 66 are respectively fixedly connected to the air duct 61 and the dust exhaust pipe 62 for discharging solid particles. Annular buckle plates 67 are fixedly provided at both ends of the fixed cover 66, and a filter assembly is installed on the fixed cover 66. The filter assembly includes an outer filter 68 and an inner filter 69. The filter hole diameter of the outer filter 68 is smaller than that of the inner filter 69. Dust hoppers are fixed at the bottom of the outer filter 68 and the inner filter 69.

[0052] A groove 63 is provided on the side of the air duct 61 and the dust exhaust pipe 62 for discharging solid particles. A sealing rod 64 is slidably provided in the groove 63. The sealing rod 64 is used to seal the air duct 61 and the dust exhaust pipe 62 for discharging solid particles, and a lever 65 is fixedly provided at the end of the sealing rod 64. A sealing cover 60 is fixedly connected to the top of the filter assembly.

[0053] An air film 601 is fixed inside the sealing cover 60 and located on the top of the inner filter 69. A moving rod 602 is slidably provided on the sealing cover 60. The top end of the moving rod 602 is fixedly connected to a top plate 606, and the other end is fixedly provided with a pressure plate 603. The pressure plate 603 is located above the air film 601. The air film 601 is pressed when the pressure plate 603 moves up and down. A spring 604 is fixed between the top plate 606 and the sealing cover 60. A side rod 607 is fixedly provided on one side of the top plate 606. A positioning hole 605 is opened on the top of the top plate 606.

[0054] like Figure 8 and Figure 10-Figure 14 As shown, a rotating block 7 is fixedly connected below the dust hopper of the outer filter 68, and a plurality of vertical grooves 71 are opened on the side of the rotating block 7. The vertical grooves 71 are located in the sealing cover 60. A limiting plate 72 is fixedly provided on the side of the rotating block 7, and the limiting plate 72 slides against the annular buckle plate 67 to realize the rotational connection between the rotating block 7 and the sealing cover 60.

[0055] A shaft 73 is fixedly connected below the rotating block 7 , and the shaft 73 is rotatably mounted on the base 13 . One end of the shaft 73 is fixedly connected to a driven wheel 51 , and a transmission belt 5 is fixedly connected to the driven wheel 51 , and a driving wheel 52 is connected to the transmission belt 5 .

[0056] A connecting rod 53 is fixedly connected to the driving wheel 52, and the recovery component 2 includes a cover plate 21, and symmetrically distributed wind guide plates 22 are fixedly connected below the cover plate 21. The filter element 6 is located between the wind guide plates 22, and the steam is discharged between the wind guide plates 22 after being filtered by the filter element 6. An arc plate 23 is fixedly connected below the cover plate 21, and the arc plate 23 is located on one side of the wind guide plate 22. A fan 24 is rotatably installed between the arc plate 23 and the wind guide plate 22, and the connecting rod 53 is fixedly connected to the shaft of a fan 24.

[0057] One side of the arc plate 23 faces the exchange element 8, and the steam wind blows from the air guide plate 22 to the fan 24, and then is discharged from between the fan 24 and the arc plate 23 to the air inlet side of the exchange element 8, enters the exchange element 8 from the air inlet side, completes heat exchange in the exchange element 8, and then is discharged.

[0058] A round tube 25 is fixedly connected to the top of the cover plate 21 and located on the sealing cover 60 . A positioning rod 27 is arranged in the round tube 25 . The positioning hole 605 is rotatably connected to the positioning rod 27 . An arc slope 26 is arranged at one end of the round tube 25 . The side rod 607 is slidably connected to the arc slope 26 .

[0059] When the filter element 6 rotates, the side rod 607 rotates with the sealing cover 60, and the elastic force of the second spring 604 causes the side rod 607 to slide with the arc slope 26, so that the side rod 607 moves up and down intermittently.

[0060] A base 13 is fixedly provided in the exchange slot 11, and a motor 2 14 is fixedly provided on the base 13. A cross bar 15 is fixedly connected to the output end of the motor 2 14. Open grooves 16 are provided on both sides of the cross bar 15. The open grooves 16 are slidably connected to the lever 65. The rotation of the cross bar 15 will drive the two levers 65 to move.

[0061] Here’s how it works:

[0062] In the actual plasticizer production process, the high-temperature steam produced is recovered, and the recovery pipeline is connected to the air intake pipe 9, and then the gas is vertically discharged from the air intake pipe 9 to the conical block 37. When the gas is in the air intake groove 31, the gas can be discharged from the air duct 61 to the filter element 6. When the gas pressure is insufficient, the air cylinder 30 can be used to drive the air push plate 33 to move downward to pressurize the gas in the air intake groove 31 so that it can be smoothly discharged into the air duct 61.

[0063] The plasticizer production steam enters the filter element 6 through the air duct 61 and the vertical slot 71. The double-layer filter structure filters the solid particles in the steam, so that the clean plasticizer steam is discharged into the exchange tank 11, and then the gas is discharged through the air guide plate 22 and the fan 24. The steam drives the fan 24 to rotate, which in turn drives the driven wheel 51 to rotate through the transmission belt 5 to control the rotation of the filter element 6, thereby improving the filtering efficiency of the filter element 6 and accelerating the falling of the filtered solid particles to prevent the filter mesh from being blocked.

[0064] After the airflow passes through the exchange element 8, it exchanges heat with the liquid pipeline in the exchange element 8 through the heat exchange principle, and the plasticizer can be recovered to produce steam thermal energy, and then the heat energy is recycled and utilized for energy-saving production. After the gas is discharged from the exhaust pipe 92, if the intake pressure is small, the one-way valve can be opened to supply part of the gas into the intake pipe 9 through the supplementary pipe 91 to ensure sufficient gas pressure.

[0065] First, the plasticizer production steam is recovered and filtered to filter out the solids with low calorie content, and then the clean plasticizer production steam is filtered to save energy and improve the efficiency of heat exchange, fully and quickly recover the heat energy in the steam, and ensure that the heat energy is fully recycled;

[0066] The filtered solid particles are deposited in the fixed cover 66. After the dust exhaust pipe 62 is opened, the solid particles are discharged into the filter basket 42. The solid box 4 is filled with pure water. The filter basket 42 and the end of the dust exhaust pipe 62 are immersed in water. The soluble matter in the discharged solid particles is dissolved, and the water-insoluble plasticizer is located in the filter basket 42, which can be easily recycled and save production energy.

[0067] In this embodiment, the recovery equipment filters the plasticizer production steam to recover heat energy, and the clean steam contacts the exchange component to recover heat energy without causing damage to the exchange component. The solid particles in the steam are recovered and sent to the solid box, where the solid particles can be dissolved and the undissolved plasticizer can be recovered, saving production materials and energy.

[0068] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0069] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A waste heat exchange and recovery device for plasticizer production steam, comprising a housing (1), characterized in that: The box body (1) is fixedly provided with a recovery component (2), an air intake box (3) is fixedly provided on one side of the recovery component (2), and a solid box (4) for recovering plasticizer is fixedly provided on the other side; A filter element (6) is rotatably disposed in the housing (1), the filter element (6) comprising a filter assembly and a fixed cover (66), air ducts (61) and dust exhaust pipes (62) for discharging solid particles are fixedly connected to both sides of the fixed cover (66), a filter assembly is mounted on the fixed cover (66), the filter assembly comprises an outer filter (68) and an inner filter (69), and the filter hole diameter of the outer filter (68) is smaller than that of the inner filter (69); An air intake pipe (9) for recovering plasticizer to produce steam is fixedly provided at one end of the box body (1); supplementary pipes (91) for supplementing steam are fixedly provided on both sides of the air intake pipe (9); a one-way valve is fixedly provided on the supplementary pipe (91); and an exhaust pipe (92) for exhausting gas is fixedly connected to one end of the supplementary pipe (91); An exchange slot (11) for mounting the recovery component (2) is provided in the box body (1); a filter element (6) is located below the recovery component (2); exchange elements (8) are fixedly provided on both sides of the filter element (6); a heat exchange plate (81) is fixedly connected to one side of the exchange element (8); an air guide slot (82) is provided on the other side; and an air guide pipe (12) for connecting to an exhaust pipe (92) is fixedly provided on the exhaust side of the exchange element (8); The air inlet box (3) is provided with an air inlet groove (31), one end of the air inlet pipe (9) is vertically arranged in the air inlet groove (31), the air inlet groove (31) is connected with an air storage groove (32), one side of the air inlet groove (31) is fixedly connected to the air duct (61), a cylinder (30) is fixedly arranged on the top of the air inlet groove (31), an output end of the cylinder (30) is fixedly connected with an air push plate (33), the air push plate (33) slides in the air storage groove (32), and the lower part of the air push plate (33) is rotatably arranged on a guide rod (34); The guide rod (34) is slidably connected with a sleeve rod (35), a spring (36) is fixed inside the sleeve rod (35), one end of the spring (36) is fixedly connected to the bottom of the guide rod (34), a conical block (37) is fixedly connected to the bottom of the sleeve rod (35), and a gas relief groove (38) for gas pressure relief is provided on the side of the conical block (37); A mounting plate (41) is fixedly provided in the solid box (4), a guide rod (44) is fixedly provided on the mounting plate (41), a lead screw (43) is rotatably provided on the mounting plate (41), a motor for driving is fixedly connected to one end of the lead screw (43), a filter basket (42) for recovering plasticizer is slidably provided on the guide rod (44), the filter basket (42) is threadedly connected to the lead screw (43), the solid box (4) is filled with pure water, and one end of the dust exhaust pipe (62) extends into the filter basket (42).

2. The waste heat exchange and recovery equipment for plasticizer production steam according to claim 1, characterized in that: Annular buckle plates (67) are fixedly provided at both ends of the fixed cover (66), dust hoppers are fixedly provided at the bottoms of the outer filter screen (68) and the inner filter screen (69), and the sides of the air duct (61) and the dust discharge pipe (62) for discharging solid particles are provided with a sink groove (63), a sealing rod (64) for controlling on and off is slidably provided in the sink groove (63), and a lever (65) is fixedly provided at the end of the sealing rod (64).

3. The waste heat exchange and recovery equipment for plasticizer production steam according to claim 2, characterized in that: A sealing cover (60) is fixedly connected to the top of the filter assembly, an air film (601) is fixedly connected inside the sealing cover (60) and located on the top of the inner filter (69), a moving rod (602) is slidably provided on the sealing cover (60), a top plate (606) is fixedly connected to the top end of the moving rod (602), and a pressure plate (603) is fixedly provided at the other end; The pressure plate (603) is located above the air film (601), a second spring (604) for support is fixedly connected between the top plate (606) and the sealing cover (60), a side rod (607) is fixedly provided on one side of the top plate (606), and a positioning hole (605) is provided on the top of the top plate (606).

4. The waste heat exchange and recovery equipment for plasticizer production steam according to claim 3, characterized in that: A rotating block (7) is fixedly connected below the outer filter screen (68). A plurality of vertical grooves (71) are provided on the side of the rotating block (7). The vertical grooves (71) are located in the sealing cover (60). A limiting plate (72) is fixedly provided on the side of the rotating block (7). The limiting plate (72) is slidably abutted against the annular buckle plate (67). A shaft (73) is fixedly connected below the rotating block (7). One end of the shaft (73) is fixedly connected to a driven wheel (51). A transmission belt (5) is fixedly connected to the driven wheel (51). The transmission belt (5) is connected to a driving wheel (52). A connecting rod (53) is fixedly connected to the driving wheel (52).

5. The waste heat exchange and recovery equipment for plasticizer production steam according to claim 3, characterized in that: The recovery assembly (2) comprises a cover plate (21), symmetrically distributed air guide plates (22) are fixedly connected below the cover plate (21), the filter element (6) is located between the air guide plates (22), an arc plate (23) is fixedly connected to the side of the cover plate (21), the arc plate (23) is located on one side of the air guide plate (22), a fan (24) is rotatably mounted between the arc plate (23) and the air guide plate (22), and one fan (24) is fixedly connected to the connecting rod (53); A circular tube (25) is fixedly connected to the top of the cover plate (21) and located on the sealing cover (60). A positioning rod (27) is provided in the circular tube (25). The positioning hole (605) is rotatably connected to the positioning rod (27). An arc slope (26) is provided at one end of the circular tube (25). The side rod (607) is slidably connected to the arc slope (26).

6. The waste heat exchange and recovery equipment for plasticizer production steam according to claim 2, characterized in that: A base (13) is fixedly provided in the exchange slot (11), and a shaft (73) is rotatably mounted on the base (13). A second motor (14) is fixedly provided on the base (13). A cross bar (15) is fixedly connected to an output end of the second motor (14). Open grooves (16) are provided on both sides of the cross bar (15), and the open grooves (16) cooperate with the shifting rod (65).

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