Cotton fiber spunlace non-woven fabric heat energy recovery system

Abstract

The invention provides a cotton fiber spunlace non-woven fabric heat energy recovery system which comprises a saucepan, the bottom of the saucepan is fixedly connected with a first drainage pipe communicated with the saucepan, and the top of the saucepan is fixedly connected with a first water inlet pipe communicated with the saucepan; the preheater comprises a shell, an upper mounting plate and a lower mounting plate which are fixedly arranged in the shell, and a vertical heat exchange tube of which the two ends are fixedly connected with the upper mounting plate and the lower mounting plate respectively; the shell is further fixedly connected with a second water inlet pipe and a second water outlet pipe which communicate with the second cavity. The device not only solves the problem of degreasing and bleaching heat energy recovery of the cotton fiber spunlace non-woven fabric in the prior art, but also solves the problem that in the process, falling cotton fibers and other impurities enter the heat exchange pipe to cause blockage of the heat exchange pipe.

Description

Technical Field

[0001] The invention relates to the technical field of heat recovery equipment, and in particular to a heat recovery system for cotton fiber spunlace nonwoven fabrics. Background Art

[0002] Spunlace nonwoven fabrics made of natural cotton fiber or cotton blends generally need to go through processes such as degreasing, bleaching, and drying. The degreasing and bleaching process is to heat and scour the cotton fiber spunlace nonwoven fabric. After the reaction, the spunlace nonwoven fabric needs to be washed with hot water. During the process, the waste liquid after the reaction and the waste liquid from the hot water washing will be discharged, which results in a large amount of heat energy being wasted. At the same time, new water needs to be added and then heated for the next round of scouring and hot water washing, which will consume a lot of energy. Therefore, in the prior art, the high-temperature wastewater discharged from the previous round can be used to preheat the water, and then introduced into the next round of processes, so that heat energy can be recovered and energy can be saved at the same time. Generally, a heat exchanger is used to preheat the newly added water with high-temperature wastewater. However, in actual operation, a large amount of shed cotton fibers often remain in the wastewater. These cotton fibers will enter the heat exchange tubes with the wastewater, eventually causing the heat exchange tubes in the heat exchanger to become clogged, affecting the heat exchange effect (the wastewater can be outside the heat exchange tubes, but the cotton fibers will also adhere to the outer wall of the heat exchange tubes, eventually causing the heat exchange effect to deteriorate). Summary of the invention

[0003] In view of the deficiencies in the prior art, the present invention provides a cotton fiber spunlace nonwoven fabric heat energy recovery system, which solves the problem in the prior art that the shed cotton fibers enter the heat exchange tubes and cause blockage of the heat exchange tubes.

[0004] According to an embodiment of the present invention, a cotton fiber spunlace nonwoven fabric heat energy recovery system comprises: a cooking pot, the bottom of the cooking pot is fixedly connected to a first drain pipe communicating with it, and the top of the cooking pot is fixedly connected to a first water inlet pipe communicating with it; a preheater, the preheater comprises a shell, and an upper mounting plate and a lower mounting plate fixedly arranged in the shell, and a vertical heat exchange tube whose two ends are respectively fixedly connected to the upper mounting plate and the lower mounting plate, the upper mounting plate and the lower mounting plate divide the shell into a first chamber, a second chamber and a third chamber arranged up and down, the vertical heat exchange tube is located in the second chamber and the two ends of the vertical heat exchange tube are also respectively connected to the first chamber and the second chamber; the shell is also fixedly connected to A second water inlet pipe and a second drain pipe connected to the second chamber, and a third drain pipe connected to the first chamber are connected, and the second drain pipe is connected to the first water inlet pipe; a transverse pipe connected to the third chamber and the first drain pipe is also fixedly connected to the outer shell; a mounting shaft located in the third chamber and extending laterally is also rotatably arranged in the outer shell, one end of the mounting shaft extends into the transverse pipe, and the other end rotatably extends outside the outer shell, a first spiral extending from the transverse pipe into the third chamber is also fixedly arranged on the mounting shaft, and a driving motor connected to one end of the mounting shaft located outside the outer shell is also installed on the outer shell; a first filter plate located between the lower mounting plate and the mounting shaft is also fixedly connected in the third chamber.

[0005] In the above embodiment, before the wastewater enters the vertical heat exchange tube, it is first filtered by the first filter plate, and the cotton fibers are blocked in the third chamber and do not enter the vertical heat exchange tube, thereby solving the problem in the prior art that the fallen cotton fibers enter the heat exchange tube and cause blockage of the heat exchange tube.

[0006] Furthermore, the first filter plate is also fixedly connected to a baffle plate, and the baffle plate and the first filter plate together divide the third chamber into upper and lower parts. The baffle plate is also fixedly connected to a second filter plate. The mounting shaft rotates through the second filter plate. The first spiral and the first filter plate are arranged on both sides of the second filter plate. The first filter plate and the second filter plate are respectively provided with a first filter hole and a second filter hole, and the aperture of the first filter hole is smaller than that of the second filter hole.

[0007] Furthermore, a second spiral is fixedly arranged on the installation shaft, and the second spiral and the first spiral are arranged on both sides of the second filter plate.

[0008] Furthermore, a rotating cylinder is fixedly connected through the second filter plate, and the rotating cylinder is rotatably sleeved outside the installation shaft.

[0009] Furthermore, the bottom of the shell is also fixedly connected to a first slag bucket connected to the space on one side of the second filter plate close to the horizontal tube, and a second slag bucket connected to the space on the other side of the second filter plate. The lower ends of the first slag bucket and the second slag bucket are also fixedly connected to the first slag discharge pipe and the second slag discharge pipe, respectively.

[0010] Furthermore, a first arch plate located just above the first slag discharge pipe is fixedly connected in the first slag gathering bucket, and a second arch plate located just above the second slag discharge pipe is fixedly connected in the second slag gathering bucket.

[0011] Furthermore, the transverse tube includes a mounting section extending into the third chamber, and the first spiral portion is located in the mounting section. The mounting section is also provided with a plurality of through holes communicating with the interior of the mounting section and the third chamber.

[0012] Furthermore, a heat preservation tank is arranged between the second drain pipe and the first water inlet pipe, a hot water pump is installed on the first water inlet pipe, and an end of the first water inlet pipe away from the cooking pot also extends to the bottom of the heat preservation tank.

[0013] Furthermore, a temperature detector for detecting the temperature inside the insulation tank is also installed on the insulation tank.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] The wastewater is first filtered by the first filter plate in the third chamber before entering the vertical heat exchange tube, and the cotton fibers are intercepted and do not enter the vertical heat exchange tube with the wastewater. Therefore, the problem in the prior art that the fallen cotton fibers enter the heat exchange tube and cause blockage of the heat exchange tube is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the internal structure of the housing of an embodiment of the present invention;

[0018] Figure 3 for Figure 2 A schematic diagram of the enlarged local structure at center A;

[0019] In the above drawings:

[0020] Boiler 1, first drain pipe 2, first water inlet pipe 3, shell 4, upper mounting plate 5, lower mounting plate 6, vertical heat exchange tube 7, first chamber 8, second chamber 9, third chamber 10, second water inlet pipe 11, second drain pipe 12, third drain pipe 13, transverse pipe 14, mounting shaft 15, first spiral 16, drive motor 17, first filter plate 18, first valve 19, second valve 20, baffle 21, second filter plate 22, first cavity 23, second cavity 24, second spiral 25, rotating cylinder 26, first slag bucket 27, second slag bucket 28, first slag discharge pipe 29, second slag discharge pipe 30, mounting section 31, through hole 32, first arch plate 33, second arch plate 34, insulation tank 35, hot water pump 36, sewage pipe 37, temperature detector 38, pressure relief valve 39. DETAILED DESCRIPTION

[0021] The technical solution of the present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0022] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0023] In an exemplary embodiment, Figure 1 , 2As shown, this embodiment provides a cotton fiber spunlace non-woven fabric heat energy recovery system, which includes: a cooking pot 1, which is a container for scouring and hot water washing, the bottom of the cooking pot 1 is fixedly connected to a first drain pipe 2 connected thereto, and the top is fixedly connected to a first water inlet pipe 3 connected thereto; a preheater, the preheater includes a shell 4, and an upper mounting plate 5 and a lower mounting plate 6 fixedly arranged in the shell 4, and a vertical heat exchange tube 7 with two ends fixedly connected to the upper mounting plate 5 and the lower mounting plate 6 respectively, and the upper mounting plate 5 and the lower mounting plate 6 divide the shell 4 into an upper and a lower arrangement The first chamber 8, the second chamber 9 and the third chamber 10 are provided, the vertical heat exchange tube 7 is located in the second chamber 9 and the two ends of the vertical heat exchange tube 7 are also connected to the first chamber 8 and the second chamber 9 respectively; the shell 4 is also fixedly connected with a second water inlet pipe 11 and a second drain pipe 12 connected to the second chamber 9, and a third drain pipe 13 connected to the first chamber 8, the second drain pipe 12 is connected to the first water inlet pipe 3, and the second water inlet pipe 11 is used to connect new water; the shell 4 is also fixedly connected with a horizontal pipe 14 connected to the third chamber 10 and the first drain pipe 2, The waste water from the pot 1 is introduced into the third chamber 10 through the first drainage pipe 2, then enters the vertical heat exchange tube 7, then enters the first chamber 8, and finally is discharged through the third drainage pipe 13. In particular, the second water inlet pipe 11 can be connected to soft water to avoid adverse effects on the spunlace non-woven fabric. The water connected enters the second chamber 9. A plurality of vertical heat exchange tubes 7 can be arranged in the second chamber 9. In this way, the new water travels in the second chamber 9, exchanges heat with the waste water in the vertical heat exchange tube 7, and is heated, and then is introduced from the second drainage pipe 12 into the first inlet. The water pipe 3 returns to the cooking pot 1; a mounting shaft 15 located in the third chamber 10 and extending transversely is rotatably arranged in the outer shell 4, one end of the mounting shaft 15 extends into the transverse pipe 14, and the other end rotates and extends outside the outer shell 4, and a first spiral 16 extending from the transverse pipe 14 into the third chamber 10 is fixedly arranged on the mounting shaft 15, and a driving motor 17 connected to one end of the mounting shaft 15 located outside the outer shell 4 is also installed on the outer shell 4; a first filter plate 18 located between the lower mounting plate 6 and the mounting shaft 15 is also fixedly connected in the third chamber 10.

[0024] In the above embodiment, before the wastewater enters the vertical heat exchange tube 7, it is first filtered by the first filter plate 18, and the cotton fibers will be blocked in the third chamber 10 and will not enter the vertical heat exchange tube 7, thereby solving the problem in the prior art that the cotton fibers that fall off will enter the heat exchange tube and cause the heat exchange tube to be blocked; further, when the drive motor 17 is running, it can drive the first spiral 16 to rotate, and the first spiral 16 and the inner wall of the horizontal tube 14 can be in sliding contact, so that the wastewater can be pulled from the boiling pot 1 into the third chamber 10, and at the same time, the wastewater is also pushed to be filtered through the first filter plate 18 and smoothly pass through the vertical heat exchange tube 7 to the first chamber 8, and finally discharged. In particular, a first valve 19 is also provided on the first drain pipe 2, and a second valve 20 is also provided on the first water inlet pipe 3, which are used to control their on and off to achieve the discharge of wastewater and the introduction of new water from the boiling pot 1.

[0025] like Figure 1 , 2 As shown, in a further exemplary embodiment, the first filter plate 18 is also fixedly connected to a baffle 21, and the baffle 21 and the first filter plate 18 together divide the third chamber 10 into an upper and lower part, the baffle 21 is also fixedly connected to a second filter plate 22, the mounting shaft 15 rotates through the second filter plate 22, the first spiral 16 and the first filter plate 18 are arranged on both sides of the second filter plate 22, the first filter plate 18 and the second filter plate 22 are respectively provided with a first filter hole and a second filter hole, the aperture of the first filter hole is smaller than the second filter hole, which is equivalent to providing two cavities (a first cavity 23 and a second cavity 24) in the third chamber 10, the wastewater first enters the first cavity 23 (when the first valve 19 is in the open state) under the pull of the first spiral 16, passes through the second filter plate 22 to the second cavity 24, and then passes through the first filter plate 18 to the vertical heat exchange tube 7, and two filtrations are performed in the process to ensure a better filtering effect; further In particular, a second spiral 25 is fixedly arranged around the mounting shaft 15, and the second spiral 25 and the first spiral 16 are arranged on both sides of the second filter plate 22. The second spiral 25 is in the second cavity 24, and similarly to the first spiral 16, pulls the wastewater through the second filter plate 22 and then through the first filter plate 18, so that the power of the wastewater flow can be strengthened, thereby ensuring that the wastewater can smoothly enter the first chamber 8 upward and be discharged through the third drain pipe 13; in more detail, a rotating cylinder 26 is also fixedly connected to the second filter plate 22, and the rotating cylinder 26 is rotatably sleeved outside the mounting shaft 15, so that the second filter plate 22 and the first spiral 16 can cooperate to provide a more stable rotation support for the mounting shaft 15, thereby ensuring the stable operation of the first spiral 16 and the second spiral 25; in particular, the width of the second spiral 25 can be larger than that of the first spiral 16, so that it can provide a greater pulling (or pushing) effect when rotating.

[0026] like Figure 1-3As shown, in a further exemplary scheme, the bottom of the shell 4 is also fixedly connected to a first slag bucket 27 that is connected to the space on one side of the second filter plate 22 close to the horizontal tube 14 (the first cavity 23), and a second slag bucket 28 that is connected to the space on the other side of the second filter plate 22 (the second cavity 24). The lower ends of the first slag bucket 27 and the second slag bucket 28 are also fixedly connected to a first slag discharge pipe 29 and a second slag discharge pipe 30, respectively. The first slag bucket 27 and the second slag bucket 28 are used to receive the intercepted cotton fibers for easy cleaning. Specifically, after a period of operation, the system needs to be cleaned, that is, the first slag discharge pipe 29 and the second slag discharge pipe 30 can be opened to release the contents, and cleaning water can be reversely introduced through the third drain pipe 13 to clean the vertical heat exchange tube 7, and the first filter plate 18 and the second filter plate 22 are also cleaned. During the process, the drive motor 17 can also be started to assist (the first valve 19 is in a closed state) to ensure cleaning. The cleaning process proceeds smoothly. In more detail, the transverse tube 14 includes a mounting section 31 extending into the third chamber 10, and the first spiral 16 is partially located in the mounting section 31. The mounting section 31 is also provided with a plurality of through holes 32 connecting the inside and the third chamber 10. When cleaning is in progress, the first slag discharge pipe 29 and the second slag discharge pipe 30 can be closed first after the waste water is discharged, and the driving motor 17 is started after the cleaning water is introduced through the third drain pipe 13. The first spiral 16 and the second spiral 25 can rotate forward or reverse to improve the cleaning efficiency of the cleaning water. When rotating forward, the first spiral 16 rotates to pull outward from the transverse tube 14, and pushes inward when reversing. At this time, the through holes 32 set can allow water to pass smoothly inside and outside the mounting section 31. In particular, the through holes 32 can be long strips, and the space on one side of the transverse tube 14 away from the first spiral 16 is also directly connected to the plurality of through holes 32 therein, so as to ensure that a pressure shock (positive pressure or negative pressure) is generated inside the transverse tube 14 when the first spiral 16 rotates forward / reverse.

[0027] like Figure 1 , 2As shown, in a further exemplary scheme, a first arched plate 33 located just above the first slag discharge pipe 29 is fixedly connected to the first slag collection bucket 27, and a second arched plate 34 located just above the second slag discharge pipe 30 is fixedly connected to the second slag collection bucket 28. In the early stage of wastewater opening, there is often a larger amount of cotton fiber mixed in the wastewater. The wastewater first enters the third chamber 10 and then falls into the first slag collection bucket 27 below the first cavity 23. The two ends of the first arched plate 33 are separated from the inner wall of the first slag collection bucket 27 and do not block the wastewater. However, as the amount of wastewater increases, more cotton fibers will be blocked by the two ends of the first arched plate 33 and gather toward the top thereof, thereby being intercepted below the first arched plate 33. In particular, a third filter hole similar to the second filter hole can also be provided on the first arched plate 33, and the aperture of the third filter hole can be consistent with that of the second filter hole, or slightly smaller. Ensure that the wastewater rises smoothly in the first slag hopper 27 and a large amount of cotton fibers are confined under the first arch plate 33. Over time, the wastewater passes through the second filter plate 22 to the second cavity 24. Similar to the above, the wastewater will first be in the second slag hopper 28 and then slowly rise. A large part of the cotton fibers will also be blocked under the second arch plate 34. Similarly, a similar fourth filter hole is also provided on the second arch plate 34. The aperture of the fourth filter hole can be smaller than that of the second filter hole, so as to successfully intercept a large part of the cotton fibers. This can correspondingly reduce the filtration load of the second filter plate 22 and the first filter plate 18; after opening the first slag discharge pipe 29 and the second slag discharge pipe 30 (the first slag discharge pipe 29 and the second slag discharge pipe 30 are respectively provided with sewage valves), the cotton fibers under the corresponding first arch plate 33 and the cotton fibers under the second arch plate 34 can be quickly discharged.

[0028] like Figure 1 In a further exemplary embodiment, a heat preservation tank 35 is further provided between the second drainage pipe 12 and the first water inlet pipe 3, a hot water pump 36 is installed on the first water inlet pipe 3, and the end of the first water inlet pipe 3 away from the boiling pot 1 also extends to the bottom of the heat preservation tank 35, and the heat preservation tank 35 plays a buffering role. After the waste water in the boiling pot 1 is discharged, the heated new water is introduced through the hot water pump 36, so as to avoid the mixing of the new water and the boiling water. In particular, a sewage pipe 37 is also provided on the first drainage pipe 2. When washing with hot water, the water after washing can be directly introduced through the sewage pipe 37. Out, but not into the shell 4, that is, the first valve 19 can be a three-way valve to control whether the waste water enters the shell 4 through the cross pipe 14, or directly enters the sewage pipe 37; at the same time, an insulation layer is also provided on the insulation tank 35 to reduce heat loss, and a temperature detector 38 for detecting the internal temperature is also provided on the insulation tank 35 (the probe extends into the insulation tank 35), so that it can be intuitively observed whether the temperature reaches the hot water washing temperature (or the boiling temperature), and a pressure relief valve 39 is also provided on the insulation tank 35 to avoid excessive internal pressure.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit it. Although the present invention has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solution of the present invention can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the present invention, which should be included in the scope of the claims of the present invention.

Claims

1. A cotton fiber spunlace nonwoven heat energy recovery system, characterized in that: include: A cooking pot, wherein the bottom of the cooking pot is fixedly connected to a first drain pipe communicating therewith, and the top of the cooking pot is fixedly connected to a first water inlet pipe communicating therewith; A preheater, the preheater comprising a shell, an upper mounting plate and a lower mounting plate fixedly arranged in the shell, and a vertical heat exchange tube having two ends fixedly connected to the upper mounting plate and the lower mounting plate, respectively, the upper mounting plate and the lower mounting plate dividing the shell into a first chamber, a second chamber and a third chamber arranged up and down, the vertical heat exchange tube being located in the second chamber and the two ends of the vertical heat exchange tube being also connected to the first chamber and the second chamber, respectively; The shell is also fixedly connected with a second water inlet pipe and a second drain pipe connected with the second chamber, and a third drain pipe connected with the first chamber, and the second drain pipe is connected with the first water inlet pipe; the shell is also fixedly connected with a transverse pipe connected with the third chamber and the first drain pipe; the shell is also rotatably provided with a mounting shaft located in the third chamber and extending laterally, one end of the mounting shaft extends into the transverse pipe, and the other end rotates and extends outside the shell; the mounting shaft is also fixedly provided with a first spiral extending from the transverse pipe into the third chamber; the shell is also provided with a driving motor connected to one end of the mounting shaft located outside the shell; the third chamber is also fixedly connected with a first filter plate located between the lower mounting plate and the mounting shaft.

2. The cotton fiber spunlace nonwoven fabric heat recovery system according to claim 1, characterized in that: The first filter plate is also fixedly connected to a baffle plate, and the baffle plate and the first filter plate together divide the third chamber into upper and lower parts. The baffle plate is also fixedly connected to a second filter plate, and the mounting shaft rotates through the second filter plate. The first spiral and the first filter plate are arranged on both sides of the second filter plate. The first filter plate and the second filter plate are respectively provided with a first filter hole and a second filter hole, and the aperture of the first filter hole is smaller than that of the second filter hole.

3. The heat recovery system for cotton fiber spunlace nonwoven fabric according to claim 2, characterized in that: A second spiral is fixedly arranged around the installation shaft, and the second spiral and the first spiral are arranged on both sides of the second filter plate.

4. The heat recovery system for cotton fiber spunlace nonwoven fabric according to claim 3, characterized in that: The second filter plate is also penetrated and fixedly connected with a rotating cylinder, and the rotating cylinder is rotatably sleeved outside the installation shaft.

5. The heat recovery system for cotton fiber spunlace nonwoven fabric according to claim 3, characterized in that: The bottom of the shell is also fixedly connected to a first slag bucket connected to the space on one side of the second filter plate close to the horizontal tube, and a second slag bucket connected to the space on the other side of the second filter plate. The lower ends of the first slag bucket and the second slag bucket are also fixedly connected to a first slag discharge pipe and a second slag discharge pipe, respectively.

6. The heat recovery system for cotton fiber spunlace nonwoven fabric according to claim 5, characterized in that: A first arch plate located just above the first slag discharge pipe is also fixedly connected in the first slag gathering bucket, and a second arch plate located just above the second slag discharge pipe is also fixedly connected in the second slag gathering bucket.

7. The heat recovery system for cotton fiber spunlace nonwoven fabric according to any one of claims 1 to 6, characterized in that: The transverse tube includes a mounting section extending into the third chamber, and the first spiral portion is located in the mounting section. The mounting section is also provided with a plurality of through holes communicating with the inside of the mounting section and the third chamber.

8. The heat recovery system for cotton fiber spunlace nonwoven fabric according to claim 7, characterized in that: A heat preservation tank is also arranged between the second drain pipe and the first water inlet pipe, a hot water pump is installed on the first water inlet pipe, and an end of the first water inlet pipe away from the cooking pot also extends to the bottom of the heat preservation tank.

9. The cotton fiber spunlace nonwoven fabric heat recovery system according to claim 8, characterized in that: The heat preservation tank is also provided with a temperature detector for detecting the temperature inside the heat preservation tank.

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