Steam waste heat recovery device of high-strength corrugating medium machine

Abstract

The utility model discloses a steam waste heat recovery device for a high-strength corrugating base paper machine, belongs to the technical field of corrugated paper production, and mainly solves the problems that in the prior art, when steam is discharged into the device, noise pollution is caused, and meanwhile, the discharged steam contains impurities, so that the production efficiency is high. The utility model relates to a waste heat recovery device, in particular to a waste heat recovery device which solves the problem that after steam heat exchange, impurities are prone to being attached to the inner wall of the device, the impurities accumulated for a long time can affect the recovery work of steam waste heat, and therefore the device is poor in practicability. The waste heat recovery device comprises a heat exchange box, a mounting box is arranged on one side of the heat exchange box, and one side of the mounting box communicates with a silencing shell; a plurality of throttling plates are fixedly connected into the silencing shell, a sound absorption cavity is formed in the silencing shell and filled with sound absorption cotton, the outer surface of the silencing shell is sleeved with sound insulation felt, an air guide cover is fixedly connected into the mounting box, a sealing sleeve is arranged on one side of the air guide cover, and a connector is in threaded connection with the interior of the sealing sleeve. And one end of the connector is fixedly connected with a filter cartridge.

Description

TECHNICAL FIELD

[0001] The utility model relates to corrugated paper production technical field more specifically, especially, relate to a kind of high-strength corrugated paper machine steam waste heat recovery device. BACKGROUND

[0002] Corrugated paper is also called kraft paper, paper skin, and it is a common material for paper packaging boxes. The raw material of corrugated paper is usually waste paper or virgin pulp. After the forming process, corrugated paper contains a high moisture content, which needs to be removed by steam heating drying equipment to remove excess moisture, so that the paper reaches the specified moisture content, ensuring the strength and quality of the paper. At the same time, steam treatment can make the fibers of the paper more orderly arranged during drying. The processed steam contains a lot of heat, which will cause the greenhouse effect if directly discharged into the atmosphere. Therefore, waste heat recovery devices are needed to recover the waste heat of the steam.

[0003] However, there are many types of waste heat recovery devices in the prior art. For example, utility model patent CN202770284U relates to a steam waste heat recovery device. The utility model includes a steam discharge pipe and a heat exchanger. One end of the heat exchanger is connected to a water inlet pipe, and the other end is connected to a water outlet pipe. The heat exchanger is rotatably connected to the steam discharge pipe or the water inlet pipe and the water outlet pipe. The heat exchanger can rotate in the steam, breaking the surrounding of the non-condensable gas on the heat exchange surface, increasing the contact opportunity with the steam, and significantly improving the heat exchange efficiency and steam waste heat recovery rate. It has the characteristics of simple structure, low cost, stable and reliable work, etc. It has important significance for energy saving, cost reduction, efficiency improvement and environmental improvement.

[0004] Although this waste heat recovery device can efficiently recover the waste heat of the discharged steam, the waste heat recovery rate of the steam is high, but the steam produces a lot of noise when it is discharged into the device, causing noise pollution. At the same time, the discharged steam contains impurities, which are easy to adhere to the inner wall of the device after steam heat exchange. Long-term accumulation of impurities will affect the recovery of steam waste heat. Therefore, the device has poor practicality. In order to avoid this phenomenon, it is necessary to design a high-strength corrugated paper machine steam waste heat recovery device. SUMMARY

[0005] The purpose of this section is to outline some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the utility model name to avoid obscuring the purpose of this section, the abstract of the specification and the utility model name. Such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] To achieve the above objectives, this utility model provides a high-strength corrugated paper machine steam waste heat recovery device, which is achieved by the following specific technical means:

[0007] A high-strength corrugated paper machine steam waste heat recovery device includes a heat exchange box, an installation box on one side of the heat exchange box, a sound-absorbing shell connected to one side of the installation box, multiple throttling plates fixedly connected inside the sound-absorbing shell, a sound-absorbing cavity opened inside the sound-absorbing shell and filled with sound-absorbing cotton, a sound-insulating felt covering the outer surface of the sound-absorbing shell in a ring shape, an air guide hood fixedly connected inside the installation box, a sealing sleeve on one side of the air guide hood, a connector threaded inside the sealing sleeve, a filter cylinder fixedly connected to one end of the connector, and the filter cylinder located inside the installation box.

[0008] Preferably, multiple throttling plates are provided with throttling micro-holes, and the diameter of the multiple sets of throttling micro-holes increases sequentially along the steam flow direction; the end of the silencer shell away from the mounting box is connected to an air inlet pipe, and the heat exchange box and the mounting box are connected by a guide pipe.

[0009] Preferably, a sealing ring is provided inside the sealing sleeve, and the sealing ring fits against one end of the connector. A blocking cover is detachably provided at the end of the filter cartridge away from the sealing sleeve. A sealing cover plate is provided on the top of the mounting box via a hinge. The sealing cover plate can seal the mounting box. A fixing buckle is provided on the sealing cover plate, and a handle is fixedly connected to the sealing cover plate.

[0010] Preferably, multiple heat-conducting vertical plates arranged in a ring are fixedly connected inside the heat exchange box. Heat-conducting coils are installed through the heat-conducting vertical plates, and the heat-conducting coils are spiral-shaped. One end of the heat-conducting coils is connected to one end of the guide pipe.

[0011] Preferably, the heat exchange box is filled with a heat-absorbing medium, and a shell is provided on the outer surface of the other side of the heat exchange box. A miniature air pump is installed inside the shell. The input end of the miniature air pump is connected to a suction pipe, and one end of the suction pipe is connected to the end of the heat-conducting coil away from the guide pipe.

[0012] Preferably, a drive shaft is rotatably connected to the heat exchange box via a bearing, and the drive shaft is located in the center of the heat-conducting coil. Multiple stirring blades are fixed at equal intervals on the surface of the drive shaft. One end of the drive shaft is fixed to the output end of a rotary motor, and the rotary motor is fixed on a fixed frame.

[0013] Preferably, the front of the heat exchange box is connected to a water outlet pipe, and a control valve can be installed on the surface of the water outlet pipe. The top of the heat exchange box is provided with a water inlet, and the water inlet is located on one side of the fixed frame.

[0014] Due to the application of the above technical solution, this utility model has the following advantages compared with the prior art:

[0015] When the steam generated by the corrugated paper after the drying process is introduced into the device by the air inlet pipe, the steam successively passes through the throttling micro-holes of multiple throttle plates along the transmission direction, the throtting pressure reduction and the principle of small hole injection are used to make the steam generate resistance when being injected to reduce the noise, and the noise is further absorbed and isolated by using the filled sound-absorbing cotton and the sleeved soundproof felt to complete the noise reduction treatment; then, the steam passes through the sealing sleeve and the connecting head under the flow guiding effect of the air guide cover, the impurities contained in the steam are filtered and intercepted by using the filter cartridge, so that the clean steam is introduced into the heat exchange box from the pipeline, thereby simultaneously reducing the noise of the steam emission and filtering the impurities contained in the steam, preventing the steam waste heat recovery work from being affected, and being more practical. BRIEF DESCRIPTION OF DRAWINGS

[0016] The accompanying drawings, which form a part of this application, are used to provide a further understanding of the present application and are incorporated herein in their entirety. The illustrative embodiments of the present application, together with its description, serve to explain the present application. The present application is not limited by the improper interpretation of the present application. In the drawings:

[0017] Figure 1 It is a schematic diagram of the overall structure of the present application;

[0018] Figure 2 It is a schematic diagram of the structure in the soundproof shell;

[0019] Figure 3 It is a schematic diagram of the structure in the mounting box;

[0020] Figure 4 It is a schematic diagram of the cross-sectional structure of the present application;

[0021] Figure 5 It is a schematic diagram of the structure of the heat-conducting coil and the heat-conducting vertical plate.

[0022] In the drawings: 1, heat exchange box; 2, mounting box; 3, soundproof shell; 4, throttle plate; 5, throttling micro-hole; 6, sound-absorbing cotton; 7, soundproof felt; 8, air guide cover; 9, sealing sleeve; 10, connecting head; 11, filter cartridge; 12, sealing ring; 13, blocking cover; 14, air inlet pipe; 15, flow guide pipe; 16, sealing cover plate; 17, fixing buckle; 18, heat-conducting vertical plate; 19, heat-conducting coil; 20, micro-pump; 21, machine shell; 22, suction pipe; 23, transmission shaft; 24, stirring blade; 25, rotary motor; 26, fixing frame; 27, water outlet pipe; 28, water inlet. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned purposes, features and advantages of the present application more obvious and easy to understand, the specific embodiments of the present application will be described in detail below with reference to the drawings.

[0024] Many specific details are set forth in the following description in order to provide a thorough understanding of the present application. However, the present application can be practiced according to other embodiments that do not require the specific details described in this description. Therefore, the present application is not limited to the embodiments described herein and can be practiced with other embodiments that are apparent to one skilled in the art.

[0025] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent or alternative to other embodiments. The present application provides the following embodiments.

[0026] As shown in Figure 1 and Figure 2 It is a structural schematic diagram of the steam waste heat recovery device of the high-strength corrugated paper machine in the embodiment, and the waste heat recovery device in the embodiment includes a heat exchange box 1, the heat exchange box 1 is provided with a mounting box 2 on one side, the mounting box 2 is communicated with a sound-absorbing shell 3 on one side, a plurality of throttle plates 4 are fixedly connected in the sound-absorbing shell 3, a sound-absorbing cavity is formed in the sound-absorbing shell 3, the sound-absorbing cavity is filled with sound-absorbing cotton 6, the outer surface of the sound-absorbing shell 3 is sleeved with sound insulation felt 7, and the sound insulation felt 7 is annular, the plurality of throttle plates 4 are all provided with throttle micro-holes 5, and the sound-absorbing shell 3 is communicated with an air inlet pipe 14 away from the mounting box 2; when the steam generated by the corrugated paper after the drying process is introduced into the device through the air inlet pipe 14 for waste heat recovery, the steam enters the sound-absorbing shell 3, and successively passes through the plurality of throttle plates 4 along the transmission direction of the steam, and overflows from the plurality of groups of throttle micro-holes 5, the principle of throttling pressure reduction and small hole injection is used, so that the steam generates resistance when being injected, so as to reduce the noise, and the sound-absorbing cotton 6 filled in the sound-absorbing cavity and the sound insulation felt 7 sleeved are used to further absorb and isolate the noise of the steam flowing in the shell, so as to perform sound-absorbing treatment on the discharged steam; the aperture of the plurality of groups of throttle micro-holes 5 increases along the flow direction of the steam, and the aperture of the plurality of groups of throttle micro-holes 5 increases, so as to improve the effect of throttling pressure reduction.

[0027] As shown in Figure 3As shown, this is a schematic diagram of the structure inside the mounting box 2 in this embodiment. In this embodiment, a gas guide hood 8 is fixedly connected inside the mounting box 2. A sealing sleeve 9 is provided on one side of the gas guide hood 8. A connector 10 is threaded inside the sealing sleeve 9. A filter cylinder 11 is fixedly connected to one end of the connector 10, and the filter cylinder 11 is located inside the mounting box 2. A sealing ring 12 is provided inside the sealing sleeve 9, and the sealing ring 12 fits against one end of the connector 10. A sealing cover plate 16 is provided on the top of the mounting box 2 through a hinge. When the steam is introduced into the mounting box 2 after being silenced, it passes through the sealing sleeve 9 and the connector 10 through the guiding effect of the gas guide hood 8 and enters the filter cylinder 11. The filter cylinder 11 filters and intercepts the impurities contained in the steam, allowing clean steam to overflow from all sides and then be introduced into the heat exchange box 1 through the pipeline. This simultaneously silences the noise of the steam emission and filters out the impurities contained in the steam, preventing the recovery of steam waste heat from being affected, thus enhancing its practicality.

[0028] It is worth noting that in this embodiment, a blocking cover 13 is detachably provided at the end of the filter cylinder 11 away from the sealing sleeve 9; the sealing cover plate 16 can seal the installation box 2, the fixing buckle 17 is provided on the sealing cover plate 16, and a handle is fixedly connected to the sealing cover plate 16.

[0029] like Figure 4 As shown, this is a schematic diagram of the structure inside the heat exchange box 1 in this embodiment. In this embodiment, multiple annularly distributed heat-conducting vertical plates 18 are fixedly connected inside the heat exchange box 1. Heat-conducting coils 19 are installed through the heat-conducting vertical plates 18, and the heat-conducting coils 19 are spiral-shaped. One end of the heat-conducting coil 19 is connected to one end of the guide pipe 15. A heat-absorbing medium is injected into the heat exchange box 1. Filtered steam is input into the heat-conducting coils 19 through the guide pipe 15. After being transported by the heat-conducting coils 19, and utilizing the thermal conduction effect of the heat-conducting vertical plates 18, the heat contained in the steam is transferred to the multiple heat-conducting vertical plates 18. Due to the heat conduction effect of the multiple heat-conducting vertical plates 18 and the injected heat-absorbing medium... The heat transfer medium has a large contact area and absorbs and transfers the conducted heat through the heat absorption medium. On the other side of the heat exchange box 1, an outer shell 21 is provided. Inside the shell 21, a miniature vacuum pump 20 is installed. The input end of the miniature vacuum pump 20 is connected to a suction pipe 22, and one end of the suction pipe 22 is connected to the end of the heat-conducting coil 19 away from the guide pipe 15. When performing waste heat recovery operations, the miniature vacuum pump 20 is started to draw in the discharged steam, so that the steam is transported and slowly flows through the heat-conducting coil 19. When the waste heat of the steam is recovered, the cooled steam is discharged to the outside.

[0030] like Figure 5As shown in the figure, it is the structural diagram of the plurality of stirring blades 24 in the embodiment, the heat exchange box 1 is rotatably connected with a transmission shaft 23 through a bearing in the embodiment, and the transmission shaft 23 is located at the central position in the heat conduction coil 19, a plurality of stirring blades 24 are equidistantly fixed on the surface of the transmission shaft 23, one end of the transmission shaft 23 is fixed with the output end of a rotary motor 25, and the rotary motor 25 is fixed on a fixed frame 26. In the process of heat exchange between steam and heat absorption medium, the rotary motor 25 provides driving force for the rotating transmission shaft 23, drives the plurality of stirring blades 24 to move together, and stirs the heat absorption medium through the stirring blades 24, so that the heat absorption medium can more uniformly absorb heat.

[0031] It is worth noting that, as Figure 1 shown, the front of the heat exchange box 1 is communicated with a water outlet pipe 27, the surface of the water outlet pipe 27 can be provided with a control valve, the top of the heat exchange box 1 is provided with a water inlet 28, and the water inlet 28 is located on one side of the fixed frame 26.

[0032] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A high-strength corrugated paper machine steam waste heat recovery device, comprising a heat exchange box (1), one side of the heat exchange box (1) is provided with a mounting box (2), one side of the mounting box (2) is communicated with a sound reduction shell (3), characterized in that: The inside of the soundproof shell (3) is fixedly connected with multiple throttle plates (4), the soundproof shell (3) is provided with a sound absorption cavity, the sound absorption cavity is filled with sound absorption cotton (6), the outer surface of the soundproof shell (3) is sleeved with sound insulation felt (7), the sound insulation felt (7) is annular, the inside of the mounting box (2) is fixedly connected with a gas guide cover (8), one side of the gas guide cover (8) is provided with a sealing sleeve (9), the inside of the sealing sleeve (9) is threadedly connected with a connecting head (10), one end of the connecting head (10) is fixedly connected with a filter cylinder (11), and the filter cylinder (11) is located in the inside of the mounting box (2).

2. A high-strength corrugated paper machine steam waste heat recovery device according to claim 1, characterized in that: Multiple throttle micro-holes (5) are arranged through the multiple throttle plates (4), the pore diameters of multiple groups of the throttle micro-holes (5) gradually increase along the flow direction of the steam; the end, away from the mounting box (2), of the soundproof shell (3) is communicated with an air inlet pipe (14), and the heat exchange box (1) and the mounting box (2) are communicated through a flow guide pipe (15).

3. A high-strength corrugated paper machine steam waste heat recovery device according to claim 1, characterized in that: A sealing ring (12) is arranged in the sealing sleeve (9), and the sealing ring (12) is attached to one end of the connecting head (10), one end, away from the sealing sleeve (9), of the filter cylinder (11) is detachably provided with a blocking cover (13), the top of the mounting box (2) is provided with a sealing cover plate (16) through a hinge, the sealing cover plate (16) can seal the mounting box (2), a fixing buckle (17) is arranged on the sealing cover plate (16), and the sealing cover plate (16) is fixedly connected with a handle.

4. A high-strength corrugated paper machine steam waste heat recovery device according to claim 1, characterized in that: Multiple heat-conducting vertical plates (18) are fixedly connected in the heat exchange box (1) and are annularly distributed, the heat-conducting vertical plates (18) are provided with heat-conducting coils (19) penetrating through, and the heat-conducting coils (19) are spiral-shaped, and one end of the heat-conducting coils (19) is communicated with one end of the flow guide pipe (15).

5. A high strength steam heat recovery device for a corrugated paper machine according to claim 1, characterized in that: Heat absorption medium is injected into the heat exchange box (1), the other side of the heat exchange box (1) is provided with a machine shell (21), a micro-pump (20) is arranged in the machine shell (21), an input end of the micro-pump (20) is connected with a suction pipe (22), and one end of the suction pipe (22) is communicated with one end, away from the flow guide pipe (15), of the heat-conducting coils (19).

6. A high strength steam heat recovery device for a corrugated paper machine according to claim 1, characterized in that: A transmission shaft (23) is rotatably connected in the heat exchange box (1) through a bearing, and the transmission shaft (23) is located at the central position in the heat-conducting coils (19), multiple stirring blades (24) are equidistantly fixed on the surface of the transmission shaft (23), one end of the transmission shaft (23) is fixed with an output end of a rotary motor (25), and the rotary motor (25) is fixed on a fixing frame (26).

7. A high strength steam heat recovery device for a corrugated paper machine according to claim 1, characterized in that: The front of the heat exchange box (1) is communicated with a water outlet pipe (27), the surface of the water outlet pipe (27) can be provided with a control valve, and the top of the heat exchange box (1) is provided with a water inlet (28), and the water inlet (28) is located on one side of the fixing frame (26).

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