Waste gas waste heat recovery device of setting machine

Abstract

The waste gas waste heat recovery device comprises a recovery box and a heat exchange pipe, one end of the recovery box communicates with a gas inlet pipe, the other end of the recovery box communicates with an exhaust pipe, a filter plate is connected into the recovery box, the filter plate is arranged on the side, close to the gas inlet pipe, of the heat exchange pipe, and the recovery box communicates with a collection box. The filter plate is additionally arranged, impurities are retained on one side of the filter plate under the blocking action of the filter plate and fall into the collecting box under the influence of self gravity, so that the impurities in the waste gas are reduced, and the impurities are prevented from being attached to the surfaces of the heat exchange pipes as much as possible.

Description

Technical Field

[0001] This application relates to the field of stenter machines, and more particularly to a waste heat recovery device for stenter machines. Background Technology

[0002] A setting machine is a machine used for shaping in industrial manufacturing. Setting machines can be categorized into shoe upper setting machines, sock setting machines, and fabric setting machines. Fabric setting machines are used to shape and process fabrics. During operation, setting machines generate a large amount of high-temperature waste gas. To be more environmentally friendly, waste heat recovery devices are typically used to recover this waste heat.

[0003] Chinese Patent CN114427799A discloses a waste heat recovery box for textile printing and dyeing finishing machines, comprising a heat recovery box, an exhaust pipe, and a heating pipe. The heat recovery box contains a heat-conducting cleaning fluid. The exhaust pipe is sealed to the heat recovery box, and the heating pipe is placed inside. A partition is provided inside the heat recovery box, and the cleaning fluid is placed on the upper side of the partition. The advantage of this invention is that, when recovering waste heat from the waste gas, the partition divides the heat recovery box into two layers. The waste gas directly heats the heating pipe upon entering the heat recovery box, eliminating the need for heating other media and improving the efficiency of heat conversion in the waste gas. The accumulation of waste gas at the bottom of the heat recovery box results in higher pressure. After the high-pressure waste gas enters the upper part of the heat recovery box through the outlet, the remaining heat is absorbed by the heat-conducting cleaning fluid, and harmful substances in the waste gas are treated, improving the utilization rate of waste gas heat and reducing waste gas pollution.

[0004] Regarding the aforementioned technologies, exhaust gas typically carries impurities, which easily adhere to the surface of heat exchange tubes, thereby affecting heat exchange efficiency. Utility Model Content

[0005] In order to reduce impurities in the exhaust gas and minimize their adhesion to the surface of the heat exchange tubes, thereby reducing the impact of impurities on heat exchange efficiency, this application provides a waste heat recovery device for the exhaust gas of a stenter.

[0006] The waste heat recovery device for a stenter machine provided in this application adopts the following technical solution:

[0007] A waste heat recovery device for a stenter includes a recovery box and a heat exchange tube connected inside the recovery box. One end of the recovery box is connected to an air inlet pipe for connecting to the stenter body. The other end of the recovery box is connected to an exhaust pipe. A filter plate is connected inside the recovery box, with the length direction of the filter plate aligned with the width direction of the recovery box. The filter plate is located on the side of the heat exchange tube near the air inlet pipe. A collection box is connected to the bottom of the recovery box and is located on the side of the filter plate near the air inlet pipe.

[0008] By adopting the above technical solution, the exhaust gas enters the recovery box through the inlet pipe. After passing through the filter plate, the exhaust gas approaches the heat exchange tube and heats the water in the heat exchange tube to achieve heat exchange. With the addition of the filter plate, impurities are blocked and retained on one side of the filter plate. The impurities fall into the collection box due to their own gravity, thereby reducing the impurities in the exhaust gas and minimizing the adhesion of impurities to the surface of the heat exchange tube.

[0009] Optionally, a scraper is connected inside the recycling bin. The length direction of the scraper is consistent with the width direction of the recycling bin. The scraper is slidably connected inside the recycling bin along the width direction of the filter plate. A moving component is connected inside the recycling bin. The moving component is used to drive the scraper to move along the width direction of the filter plate. The width direction of the scraper is consistent with the length direction of the recycling bin. The scraper contacts the filter plate on one side along its width direction.

[0010] By adopting the above technical solution, when impurities adhere to the surface of the filter plate, the moving component drives the scraper to move along the width direction of the filter plate, so that the scraper cleans the impurities on the surface of the filter plate and pushes the impurities on the surface of the filter plate into the collection box, thereby reducing the impurities on the surface of the filter plate and minimizing the clogging of the filter plate by impurities.

[0011] Optionally, the bottom end of the filter plate is connected to the inner wall of the recycling bin, and the top end of the filter plate is inclined toward the side near the air inlet pipe.

[0012] By adopting the above technical solution, the filter plate is set at an angle to reduce the impurities accumulated on the surface of the filter plate and to minimize the clogging of the filter plate by impurities.

[0013] Optionally, the moving component includes a lead screw, a guide rod, a slider, and a first motor. The length direction of the lead screw is consistent with the width direction of the filter plate. Both ends of the lead screw are rotatably connected to the inner wall of the corresponding side of the recycling bin. The length direction of the guide rod is consistent with the length direction of the lead screw. Both ends of the guide rod are connected to the inner wall of the corresponding side of the recycling bin. The guide rod and the lead screw are spaced apart along the length direction of the scraper. The guide rod and the lead screw are respectively located on both sides of the scraper along the length direction of the scraper. The first motor is connected to the outer wall of the recycling bin. The output shaft of the first motor is connected to one end of the lead screw. There are two sliders. One slider is threaded onto the lead screw, and the other slider is slidably mounted on the guide rod. Both ends of the scraper along its length direction are connected to the two sliders.

[0014] By adopting the above technical solution, the first motor drives the lead screw to rotate, thereby driving the slider to move along the width direction of the filter plate. The slider drives the scraper to move along the width direction of the filter plate, thereby enabling the scraper to clean the impurities on the surface of the filter plate.

[0015] Optionally, the scraper is connected to a rotating shaft on both sides along its length direction. The length direction of the rotating shaft is consistent with the length direction of the scraper. The rotating shaft is rotatably connected to a slider. The slider is connected to a rotating component, which is used to drive the rotating shaft to rotate.

[0016] By adopting the above technical solution, when the scraper moves to the bottom of the recovery box and approaches the collection box, the air inlet pipe continuously inputs waste gas into the recovery box. Impurities adhere to the surface of the filter plate, and the rotating component drives the rotating shaft to rotate, thereby causing the scraper to rotate and move away from the filter plate. The moving component drives the scraper to move along the width direction of the filter plate and move the scraper away from the collection box, thereby minimizing the scraper pushing the impurities adhering to the surface of the filter plate away from the collection box, thus facilitating the cleaning and collection of impurities.

[0017] Optionally, the length direction of the collection box is consistent with the length direction of the filter plate, and the width direction of the collection box is consistent with the length direction of the recovery box. The collection box has a discharge port on one side along its width direction, and the discharge port is located on the side of the collection box away from the air inlet pipe. A guide plate is connected inside the collection box, and the length direction of the guide plate is consistent with the length direction of the collection box. The bottom end of the guide plate is connected to the bottom inner wall of the collection box, and the top end of the guide plate is inclined towards the side closer to the air inlet pipe. The top end of the guide plate is connected to the inner wall of the collection box on the side closer to the air inlet pipe. The collection box is connected to an opening and closing device, which is used to open and close the discharge port.

[0018] By adopting the above technical solution, when impurities fall into the collection box, they are guided by the guide plate and move along the guide plate to approach the discharge port, which makes it easier for operators to clean up the impurities.

[0019] Optionally, the inner wall of the recycling bin is provided with an annular groove, the filter plate is embedded in the annular groove around its periphery, the top of the annular groove is provided with a movable hole, the top of the filter plate passes through the movable hole along its width direction, and the filter plate is slidably connected to the movable hole and the annular groove along its width direction.

[0020] By adopting the above technical solution, when the filter plate surface is covered with impurities that are difficult to clean or when the filter plate is damaged due to long-term use, the filter plate can be moved along the width direction of the filter plate to move the filter plate away from the recycling box, thereby facilitating the cleaning and replacement of the filter plate.

[0021] Optionally, mounting plates are connected to both sides of the filter plate along the length of the recycling bin. The mounting plates are connected to the top of the filter plate, and the length of the mounting plates is consistent with the length of the filter plate. The bottom of the mounting plates contacts the top of the recycling bin, and the mounting plates are detachably connected to the top of the recycling bin by bolts.

[0022] By adopting the above technical solution, when the filter plate is installed in the recycling bin, the bottom of the mounting plate contacts the top of the recycling bin, thereby minimizing the possibility of exhaust gas being discharged from the recycling bin through the gap between the moving hole and the filter plate. Furthermore, the mounting plate is detachably connected to the top of the recycling bin by bolts, thus ensuring that the filter plate is stably connected to the recycling bin.

[0023] In summary, this application includes at least one of the following beneficial technical effects:

[0024] 1. The exhaust gas enters the recovery box through the inlet pipe. After passing through the filter plate, the exhaust gas approaches the heat exchange tube. The exhaust gas heats the water in the heat exchange tube to achieve heat exchange. The filter plate is added so that impurities are blocked and retained on one side of the filter plate. The impurities fall into the collection box due to their own gravity, thereby reducing the impurities in the exhaust gas and minimizing the adhesion of impurities to the surface of the heat exchange tube.

[0025] 2. The first motor drives the lead screw to rotate, which in turn drives the slider to move along the width of the filter plate. The slider drives the scraper to move along the width of the filter plate, so that the scraper cleans the impurities on the surface of the filter plate.

[0026] 3. When impurities fall into the collection box, they are guided by the guide plate and move along the guide plate to approach the discharge port, which makes it easier for operators to clean up the impurities. Attached Figure Description

[0027] Figure 1 This is a three-dimensional structural diagram of this embodiment.

[0028] Figure 2 This is a top view of this embodiment.

[0029] Figure 3 This is the embodiment. Figure 2 Sectional view along the AA direction.

[0030] Figure 4 This is the embodiment. Figure 3 Enlarged view of section B.

[0031] Figure 5 This is the embodiment. Figure 3 Enlarged view of section C.

[0032] Figure 6 This is the front view of this embodiment.

[0033] Figure 7 This is the embodiment. Figure 6 Sectional view along the DD direction.

[0034] Figure 8 This is the embodiment. Figure 2 A sectional view along the EE direction.

[0035] Explanation of reference numerals in the attached drawings: 100, recovery box; 110, air inlet pipe; 120, exhaust pipe; 130, heat exchange pipe; 131, water inlet pipe; 132, water outlet pipe; 133, water pump; 140, annular groove; 141, sealing ring; 142, moving hole; 200, filter plate; 210, handle; 220, mounting plate; 221, sealing layer; 300, scraper; 310, rotating shaft; 400, moving assembly; 410, first motor; 420, lead screw; 430, guide rod; 440, slider; 441, second motor; 500, collection box; 510, discharge port; 520, opening and closing door; 530, guide plate. Detailed Implementation

[0036] The following is in conjunction with the appendix Figure 1-8 This application will be described in further detail.

[0037] This application discloses a waste heat recovery device for exhaust gas from a stenter. (Refer to...) Figure 1 and Figure 2 The waste heat recovery device for the stenter includes a recovery box 100, the length of which is aligned with the horizontal direction. One end of the recovery box 100 is connected to an air inlet pipe 110, and the other end of the air inlet pipe 110 is connected to the stenter body. The other end of the recovery box 100 is connected to an exhaust pipe 120, which is used to discharge the waste gas from the recovery box 100.

[0038] Reference Figure 3 A filter plate 200 is connected inside the recovery box 100. The filter plate 200 and the heat exchange tube 130 are distributed sequentially and at intervals along the direction of waste gas movement. The length direction of the filter plate 200 is consistent with the width direction of the recovery box 100, and the periphery of the filter plate 200 is connected to the inner wall of the recovery box 100.

[0039] Reference Figure 3 The recycling bin 100 is equipped with a heat exchange tube 130, which is S-shaped. One end of the heat exchange tube 130 is connected to a water inlet pipe 131, the length of which is aligned with the vertical direction, and the water inlet pipe 131 passes vertically through the top of the recycling bin 100. The other end of the heat exchange tube 130 is connected to a water outlet pipe 132, the length of which is aligned with the vertical direction, and the water outlet pipe 132 passes vertically through the bottom of the recycling bin. The water inlet pipe 131 is connected to a water pump 133, which is connected to the top of the recycling bin 100.

[0040] A filter plate 200 is added to reduce the number of impurities approaching the heat exchange tube 130, reduce the number of impurities adhering to the heat exchange tube 130, and reduce the impact of impurities on heat exchange efficiency.

[0041] Reference Figure 3 and Figure 4The filter plate 200 is inclined, with one end connected to the bottom inner wall of the recovery box 100 along its width direction, and the other end of the filter plate 200 inclined towards the side near the air inlet pipe 110 and connected to the top inner wall of the recovery box 100. An annular groove 140 is formed in the inner wall of the recovery box 100. The annular groove 140 is a square ring, and the filter plate 200 is embedded in the annular groove 140. A sealing ring 141 is connected to the inner wall of the annular groove 140. The sealing ring 141 is made of rubber and contacts the filter plate 200.

[0042] Reference Figure 3 and Figure 5 A movable hole 142 is provided at the top of the annular groove 140. The length direction of the movable hole 142 is consistent with the length direction of the filter plate 200. The top of the filter plate 200 passes through and is slidably connected to the movable hole 142 along its width direction. The top of the filter plate 200 is located outside the recycling bin 100. A handle 210 is connected to the top of the filter plate 200. The filter plate 200 is slidably connected to the annular groove 140 along its width direction.

[0043] Reference Figure 3 and Figure 5 The filter plate 200 has two mounting plates 220 connected to its top. These two mounting plates 220 are respectively connected to both sides of the filter plate 200 along the length of the recycling bin 100. The length of the mounting plates 220 is consistent with the width of the recycling bin 100. The bottom of the mounting plates 220 contacts the top of the recycling bin 100. A sealing layer 221, made of rubber, is connected to the bottom of the mounting plates 220 and contacts the top of the recycling bin 100. The mounting plates 220 are detachably connected to the top of the recycling bin 100 by bolts. The bolts pass vertically through the mounting plates 220 and are threaded into the top of the recycling bin 100. The filter plate 200 is detachable, facilitating cleaning and replacement.

[0044] Reference Figure 3 and Figure 6 A scraper 300 is connected inside the recycling bin 100. The length direction of the scraper 300 is consistent with the width direction of the recycling bin 100, and the width direction of the scraper 300 is consistent with the length direction of the recycling bin 100. The scraper 300 is slidably connected inside the recycling bin 100 along the width direction of the filter plate 200, and one side of the scraper 300 is in contact with the filter plate 200 along its width direction.

[0045] Reference Figure 3 and Figure 7A moving assembly 400 is connected inside the recycling bin 100. The moving assembly 400 is used to drive the scraper 300 to move along the width direction of the filter plate 200. The moving assembly 400 includes a first motor 410, a lead screw 420, a guide rod 430, and two sliders 440 connected to the recycling bin 100. The length direction of the lead screw 420 is consistent with the width direction of the filter plate 200, and the length direction of the guide rod 430 is consistent with the length direction of the lead screw 420. Both the guide rod 430 and the lead screw 420 are inclined, and the guide rod 430 is parallel to the filter plate 200. The two ends of the lead screw 420 are rotatably connected to the corresponding inner wall of the recycling bin 100 along its length direction, and the two ends of the guide rod 430 are connected to the corresponding inner wall of the recycling bin 100 along its length direction. Guide rods 430 and lead screws 420 are spaced apart along the length of scraper 300, with the scraper 300 positioned between the guide rods 430 and lead screws 420. The guide rods 430 and lead screws 420 are respectively positioned on both sides of the scraper 300 along its length. One slider 440 is threaded onto the lead screw 420, and another slider 440 is slidably fitted onto the guide rod 430. Both ends of the scraper 300 are rotatably connected to the two sliders 440 along its length, and the sliders 440 are connected to the end of the scraper 300 furthest from the filter plate 200. A first motor 410 is connected to the top outer wall of the recovery box 100. The output shaft of the first motor 410 passes through the top inner wall of the recovery box 100 along the width of the filter plate 200, and the output shaft of the first motor 410 is connected to one end of the lead screw 420.

[0046] Reference Figure 7 and Figure 8 The scraper 300 has a rotating shaft 310 connected to both sides along its length direction. The length direction of the rotating shaft 310 is the same as that of the scraper 300. One end of the rotating shaft 310 is connected to the scraper 300 along its length direction, and the other end is rotatably connected to the slider 440. A slider 440 located on one side of the scraper 300 is connected to a rotating component, which is a second motor 441. The second motor 441 is connected to the slider 440. The output shaft of the second motor 441 extends along the length direction of the scraper 300 and is connected to one end of the rotating shaft 310.

[0047] When impurities are present on the surface of the filter plate 200, the first motor 410 drives the lead screw 420 to rotate, thereby driving the slider 440 to move along the width direction of the filter plate 200, which in turn drives the scraper 300 to move along the width direction of the filter plate 200, so that the scraper 300 cleans the impurities on the surface of the filter plate 200, thereby reducing the impurities on the surface of the filter plate 200.

[0048] Reference Figure 3The bottom of the recycling bin 100 is connected to a collection bin 500. The length of the collection bin 500 is the same as the width of the recycling bin 100, and the width of the collection bin 500 is the same as the length of the recycling bin 100. The collection bin 500 is located on the side of the filter plate 200 near the air inlet pipe 110. The collection bin 500 has a discharge port 510 along its width and near the filter plate 200. The length of the discharge port 510 is the same as the length of the collection bin 500. The collection bin 500 is connected to an opening and closing element, which is an opening and closing door 520. The length of the opening and closing door 520 is the same as the length of the collection bin 500, and the opening and closing door 520 is connected to the side of the collection bin 500 away from the air inlet pipe 110. The top of the opening and closing door 520 is rotatably connected to the collection box 500, and the bottom of the opening and closing door 520 is used to contact the side wall of the collection box 500. The bottom of the opening and closing door 520 is detachably connected to the collection box 500 by bolts. The bolts pass through the opening and closing door 520 along the width direction of the collection box 500 and are threadedly connected to the collection box 500.

[0049] Reference Figure 3 A guide plate 530 is connected inside the collection box 500. The length direction of the guide plate 530 is consistent with the length direction of the collection box 500. The guide plate 530 is inclined. The top of the guide plate 530 is connected to the inner wall of the collection box 500 along the width direction, and the top of the guide plate 530 is connected to the inner wall of the collection box 500 away from the discharge port 510. The bottom of the guide plate 530 is inclined downwards and is connected to the bottom inner wall of the collection box 500.

[0050] After the impurities fall into the collection box 500, they move along the guide plate 530 and approach the discharge port 510. When there are impurities in the collection box 500, the discharge port 510 is opened and the impurities in the collection box 500 are cleaned.

[0051] The implementation principle of the waste heat recovery device for a stenter in this application embodiment is as follows: Waste gas enters the recovery box 100 through the inlet pipe 110. The waste gas is filtered by the filter plate 200 to reduce impurities in the waste gas. Impurities are blocked by the filter plate 200 and fall into the collection box 500. When impurities are stuck to the surface of the filter plate 200, the first motor 410 drives the lead screw 420 to rotate, thereby driving the slider 440 to move along the width direction of the filter plate 200. The scraper 300 moves with the slider 440, thereby cleaning the impurities on the surface of the filter plate 200, thereby reducing the impurities on the surface of the filter plate 200, avoiding impurities from clogging the filter plate 200, and avoiding impurities from adhering to the surface of the heat exchange tube 130, thereby reducing the impact of impurities on the heat exchange efficiency.

[0052] The above are all preferred embodiments of this application and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A waste heat recovery device of a setting machine, comprising a recovery tank (100), a heat exchange pipe (130) connected to the recovery tank (100), one end of the recovery tank (100) being communicated with an air inlet pipe (110) for communicating with a body of the setting machine, the other end of the recovery tank (100) being communicated with an air outlet pipe (120), characterized in that: The recycling bin (100) is connected to a filter plate (200). The length direction of the filter plate (200) is consistent with the width direction of the recycling bin (100). The filter plate (200) is located on the side of the heat exchange tube (130) near the air inlet pipe (110). The recycling bin (100) is connected to a collection box (500). The collection box (500) is connected to the bottom of the recycling bin (100). The collection box (500) is located on the side of the filter plate (200) near the air inlet pipe (110).

2. The waste heat recovery device of the setting machine according to claim 1, characterized in that: A scraper (300) is connected inside the recycling bin (100). The length direction of the scraper (300) is consistent with the width direction of the recycling bin (100). The scraper (300) is slidably connected inside the recycling bin (100) along the width direction of the filter plate (200). A moving component (400) is connected inside the recycling bin (100). The moving component (400) is used to drive the scraper (300) to move along the width direction of the filter plate (200). The width direction of the scraper (300) is consistent with the length direction of the recycling bin (100). The scraper (300) contacts the filter plate (200) on one side along its width direction.

3. The waste heat recovery device for the stenter according to claim 2, characterized in that: The bottom end of the filter plate (200) is connected to the inner wall of the recycling box (100), and the top end of the filter plate (200) is inclined toward the side near the air inlet pipe (110).

4. The waste heat recovery device of the setting machine according to claim 3, characterized in that: The moving component (400) includes a lead screw (420), a guide rod (430), a slider (440), and a first motor (410). The length direction of the lead screw (420) is consistent with the width direction of the filter plate (200). Both ends of the lead screw (420) along its length direction are rotatably connected to the corresponding inner wall of the recycling bin (100). The length direction of the guide rod (430) is consistent with the length direction of the lead screw (420). Both ends of the guide rod (430) along its length direction are connected to the corresponding inner wall of the recycling bin (100). The guide rod (430) and the lead screw (420) move along the scraper (3) 00) The guide rod (430) and the lead screw (420) are respectively set on both sides of the scraper (300) along the length direction of the scraper (300). The first motor (410) is connected to the outer wall of the recycling box (100). The output shaft of the first motor (410) is connected to one end of the lead screw (420). There are two sliders (440). One slider (440) is threaded onto the lead screw (420), and the other slider (440) is slidably sleeved onto the guide rod (430). The two ends of the scraper (300) along its length direction are respectively connected to the two sliders (440).

5. The waste heat recovery device of a setting machine according to claim 4, characterized in that: The scraper (300) is connected to a rotating shaft (310) on both sides along its length direction. The length direction of the rotating shaft (310) is consistent with the length direction of the scraper (300). The rotating shaft (310) is rotatably connected to the slider (440). The slider (440) is connected to a rotating component, which is used to drive the rotating shaft (310) to rotate.

6. The waste heat recovery device of the setting machine according to claim 1, characterized in that: The length direction of the collection box (500) is consistent with the length direction of the filter plate (200), and the width direction of the collection box (500) is consistent with the length direction of the recovery box (100). The collection box (500) has a discharge port (510) on one side along its width direction. The discharge port (510) is located on the side of the collection box (500) away from the air inlet pipe (110). A guide plate (530) is connected inside the collection box (500). The length direction of the guide plate (530) is consistent with the length direction of the collection box (500). The bottom end of the guide plate (530) is connected to the bottom inner wall of the collection box (500). The top end of the guide plate (530) is inclined towards the side close to the air inlet pipe (110). The top end of the guide plate (530) is connected to the inner wall of the collection box (500) on the side close to the air inlet pipe (110). The collection box (500) is connected to an opening and closing component, which is used to open and close the discharge port (510).

7. The waste heat recovery device of the setting machine according to claim 3, characterized in that: The inner wall of the recycling bin (100) is provided with an annular groove (140), the filter plate (200) is embedded in the annular groove (140) around its periphery, the top of the annular groove (140) is provided with a movable hole (142), the top of the filter plate (200) passes through the movable hole (142) along its width direction, and the filter plate (200) is slidably connected to the movable hole (142) and the annular groove (140) along its width direction.

8. The waste heat recovery device of a setting machine according to claim 7, characterized in that: The filter plate (200) is connected to mounting plates (220) on both sides along the length of the recycling box (100). The mounting plates (220) are connected to the top of the filter plate (200). The length of the mounting plates (220) is consistent with the length of the filter plate (200). The bottom of the mounting plates (220) is in contact with the top of the recycling box (100). The mounting plates (220) are detachably connected to the top of the recycling box (100) by bolts.

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