A dehydration device for PET bottle flakes and its usage method

Abstract

This invention discloses a dehydration device for PET bottle flakes and its usage method, including a dehydration and drying mechanism. The dehydration and drying mechanism includes a drying chamber body, the top of which has a dehydration trough. An annular sliding plate is fixedly connected to the top of the drying chamber body and outside the dehydration trough. This invention relates to the field of PET bottle flake recycling technology. This PET bottle flake dehydration device and its usage method combine the dehydration and drying mechanism with a step-by-step cooling mechanism. These two mechanisms sequentially dehydrate and dry the PET bottle flakes, resulting in better drying. Then, using three different temperature zones formed by the first air duct, the second air duct, and the water storage tank, the dried PET bottle flakes are gradually cooled, preventing the hot PET bottle flakes from directly contacting the external environment. This effectively reduces surface moisture regain and water vapor adhesion caused by sudden temperature drops after cooling.

Description

Technical Field

[0001] This invention relates to the field of PET bottle flake recycling technology, specifically to a PET bottle flake dehydration device and its usage method. Background Technology

[0002] PET plastic bottles are used for beverage packaging, not only for carbonated drinks, drinking water, juice, enzymes, and tea drinks, making them the most widely used beverage packaging today, but also for food, chemical, and pharmaceutical packaging. Currently, PET plastic bottles are recycled after disposal for use in other fields. The recycling process generally involves crushing, washing, and drying. However, existing drying equipment makes it inconvenient to handle PET bottle flakes after drying, reducing its effectiveness and resulting in poor dehydration, leaving water stains on the PET bottle flakes after dehydration. Patent documents have now addressed this issue.

[0003] For example, Chinese patent CN222245581U discloses a dehydration device for PET bottle flakes, comprising a dehydration tank, a dehydration mesh cylinder, and a cover plate. A rotary lifting assembly is provided between the dehydration tank and the cover plate. A turntable is rotatably connected to the bottom of the cover plate. A pouring assembly is provided between the turntable and the dehydration mesh cylinder. A cover is fixedly connected to the top of the cover plate. A centrifugal dehydration assembly is provided between the cover and the turntable. A hot air blower is fixedly connected to one side of the dehydration tank. This utility model has a reasonable structural design. With the cooperation of the rotary lifting assembly and the pouring assembly, it facilitates the rapid handling of PET bottle flakes, resulting in better performance and improved work efficiency. Furthermore, the reciprocating rotation of the dehydration mesh cylinder and the hot air drying process allow for centrifugal dehydration followed by hot air drying, preventing water stains on the PET bottle flakes after dehydration, thus making the dehydration more thorough and achieving a better dehydration effect.

[0004] Although the equipment described in the above document can separate and sequentially perform the dehydration and drying steps, thus improving the drying effect, it still has obvious shortcomings in actual use, such as:

[0005] The optimal drying temperature for existing PET bottle flakes is between 120 and 180 degrees Celsius. However, like traditional equipment, this machine removes and dumps the PET bottle flakes immediately after drying to avoid delaying subsequent drying. However, the temperature of the PET bottle flakes is not effectively reduced at this point; the surface temperature remains between 120 and 150 degrees Celsius. Current field investigations show that when PET bottle flakes are suddenly moved from a high-temperature environment to a low-temperature environment, the sudden temperature difference causes a sharp drop in surface temperature, leading to moisture regain and surface condensation. Since PET is a hydrophilic material, high humidity in the external environment exacerbates this moisture regain, reducing the drying effect. Furthermore, directly removing the PET bottle flakes after drying for further processing poses a risk of burns to workers.

[0006] Therefore, a dehydration device for PET flakes has been designed to reduce moisture regain and address this defect. Summary of the Invention

[0007] To address the shortcomings of existing technologies, this invention provides a dehydration device for PET bottle flakes and its usage method, which solves the problem that existing PET bottle flakes are prone to regaining moisture after dehydration and drying.

[0008] To achieve the above objectives, the present invention provides the following technical solution: a dehydration device for PET bottle flakes, comprising a dehydration and drying mechanism, wherein the dehydration and drying mechanism includes a drying chamber body, a dehydration trough is provided on the top of the drying chamber body, an annular sliding plate is fixedly connected to the top of the drying chamber body and outside the dehydration trough, a sliding block is slidably installed on the inner side of the annular sliding plate, a gear disk is fixedly connected to the top of the sliding block, a dehydration screen is fixedly connected to the inner side of the gear disk and the dehydration screen is located inside the dehydration trough, an arc-shaped scraper is fixedly connected to the bottom of the gear disk through a bracket, a plurality of arc-shaped scrapers are provided and the arc-shaped scrapers are in contact with the inner wall of the dehydration trough, a square slot seat is rotatably connected to the bottom of the dehydration screen through a bearing, and the square slot seat is fixedly connected to the top of the inner cavity of the drying chamber body through a bracket, and a step-by-step cooling mechanism is installed at the bottom of the inner cavity of the drying chamber body.

[0009] Preferably, a motor is fixedly installed on the rear side of the top of the drying box body via a bracket. The output shaft of the motor is fixedly connected to a rotating rod via a coupling, and the bottom end of the rotating rod is rotatably connected to the top of the drying box body via a bearing. A gear plate that cooperates with a gear disk is fixedly connected to the surface of the rotating rod. A vertical rotating rod is rotatably connected to the rear of the drying box body via a bearing. The vertical rotating rod and the rotating rod are connected by a pulley and a belt drive. A first bevel gear is fixedly connected to the bottom end of the vertical rotating rod.

[0010] Preferably, the surface of the drying oven body is provided with a pull-out opening, and a water collection frame is provided on the inner side of the pull-out opening. A concave slide is fixedly installed between the two sides of the inner cavity of the water collection frame through a bracket, and the square groove seat is slidably connected to the inner side of the concave slide. L-shaped pull plates are fixedly connected to both sides of the rear part of the water collection frame. Rebound rods are fixedly connected to both sides of the rear part of the inner cavity of the drying oven body, and the front end of the rebound rod passes through the L-shaped pull plate and extends to the inner side of the L-shaped pull plate. A first spring is sleeved on the surface of the rebound rod and located on the inner side of the L-shaped pull plate. A curved water pipe is fixedly connected to both sides of the surface of the water collection frame through openings. A first horizontal pull rod is fixedly connected to the surface of the water collection frame.

[0011] Preferably, a drying recessed frame is fixedly connected between the two sides of the inner cavity of the drying chamber, and the drying recessed frame is located at the bottom of the dehydration tank. Limiting grooves are provided on the upper part of both sides of the inner cavity of the drying recessed frame. An arc-shaped sealing plate frame is slidably installed between the inner sides of the two limiting grooves, and the arc-shaped sealing plate frame is in contact with the inner side of the drying recessed frame. An inner polygonal rotating cylinder is rotatably connected between the two arc-shaped sealing plate frames through an opening. A stirring blade is fixedly connected to the surface of the inner polygonal rotating cylinder. A multi-faceted rotating rod is slidably connected to the inner side of the inner polygonal rotating cylinder, and the front end of the multi-faceted rotating rod is rotatably connected to the front part of the inner cavity of the drying chamber through a bearing. The rear end of the multi-faceted rotating rod passes through the drying chamber body and extends to the rear part of the drying chamber body. A second bevel gear that meshes with the first bevel gear is fixedly connected to the end of the drying chamber body that extends to the rear part of the drying chamber body.

[0012] Preferably, both sides of the inner cavity of the drying concave frame are provided with ventilation mesh holes, and a hot air blower and an exhaust fan are respectively fixedly installed on both sides of the drying concave frame through openings. A second horizontal tie rod is fixedly connected to the surface of the arc-shaped sealing plate frame, and the front end of the second horizontal tie rod penetrates through the drying box body and extends to the front of the drying box body. A stop round seat is fixedly connected to the surface of the second horizontal tie rod, and a second spring is sleeved on the front part of the surface of the second horizontal tie rod.

[0013] Preferably, a cylinder is fixedly connected to the right side of the drying oven body via a fixing plate, and a double sliding sleeve plate is fixedly connected to the front end of the cylinder. The double sliding sleeve plate is slidably installed on the surfaces of the first and second horizontal tie rods, and the double sliding sleeve plate is located between the second spring and the stop seat. A retraction frame is fixedly installed to the front end of the cylinder via a bracket. An arc-shaped toothed plate is slidably installed on the inner side of the retraction frame, and a third spring is fixedly connected between the arc-shaped toothed plate and the inner wall of the retraction frame. An inclined guide plate is fixedly installed between the two sides of the inner cavity of the drying oven body and at the bottom of the drying concave frame.

[0014] Preferably, the step-by-step cooling mechanism includes a cooling rectangular frame, which is fixedly installed at the bottom of the inner cavity of the drying oven body. The front end of the cooling rectangular frame penetrates through the drying oven body and extends to the front of the drying oven body. The front and rear parts of the inner cavity of the cooling rectangular frame are rotatably connected to a horizontal rotating rod through bearing components. A transmission cylinder is fixedly installed on the surface of the horizontal rotating rod. A conveyor belt is installed between the two transmission cylinders. The right end of the front horizontal rotating rod penetrates through the cooling rectangular frame and extends to the right side of the cooling rectangular frame. A gear cylinder is fixedly connected to the end of the horizontal rotating rod extending to the right side of the cooling rectangular frame. A feeding port is opened on the rear side of the top of the cooling rectangular frame.

[0015] Preferably, the top of the cooling rectangular frame and inside the drying chamber body are respectively provided with a first recess and a second recess. A first air guide pipe is fixedly installed inside the first recess, and a second air guide pipe is fixedly installed inside the second recess. The second air guide pipe is connected to the left end of the first air guide pipe. The right end of the first air guide pipe passes through the drying chamber body and is connected to the exhaust fan. Heat-conducting aluminum plates are fixedly connected to both sides of the bottom of the first and second air guide pipes and inside the cooling rectangular frame. An exhaust side frame is fixedly connected to the front left side of the cooling rectangular frame through an opening. A third air guide pipe is fixedly installed on the left side of the exhaust side frame through an opening. The rear end of the third air guide pipe passes through the second air guide pipe, the first air guide pipe, and the drying chamber body in sequence and is connected to the hot air fan. A water storage tank is fixedly installed on the front top of the cooling rectangular frame through an opening, and the bottom end of the curved water pipe contacts the top of the water storage tank.

[0016] This invention also discloses a method for using a dehydration device for PET bottle flakes, specifically including the following steps:

[0017] S1. Bottle flake dehydration: PET bottle flakes are put into the dehydration mesh cylinder, and the water on the surface of the PET bottle flakes is removed by the rotating dehydration mesh cylinder;

[0018] S2. Bottle flake drying: The dehydrated PET bottle flakes are placed inside the drying concave frame and dried with hot air using a hot air blower.

[0019] S3. Temperature adaptation of bottle flakes: The dried PET bottle flakes are placed inside the cooling rectangular frame, and the temperature is adapted by using the different temperature zones formed by the first air guide pipe, the second air guide pipe and the third air guide pipe.

[0020] This invention provides a dehydration device for PET bottle flakes and its method of use. Compared with existing technologies, it has the following advantages:

[0021] (1) The dehydration device for PET bottle flakes and its usage method combine the dehydration and drying mechanism and the step-by-step cooling mechanism. The two mechanisms can first dehydrate and dry the PET bottle flakes in sequence, so that the PET bottle flakes can be dried better. Then, the three different temperature zones formed by the first air duct, the second air duct and the water tank are used to gradually cool down the dried PET bottle flakes, so as to avoid the high temperature PET bottle flakes from directly contacting the external environment. After the PET bottle flakes are cooled down, the surface moisture and water vapor adhesion caused by the sudden drop in temperature can be effectively reduced, the drying and storage time of PET bottle flakes can be extended, and the subsequent processing and use can be facilitated, thus effectively improving the drying quality.

[0022] (2) The dehydration device for PET bottles and its usage method are as follows: an arc-shaped scraper is installed at the bottom of the gear disc and the arc-shaped scraper is made to fit against the inner wall of the dehydration tank. It is used in conjunction with a water collection frame, a concave slide, and a square slot seat. When the dehydration screen rotates and dehydrates, the arc-shaped scraper guides the water to the inner wall of the dehydration tank, thereby collecting the water inside the water collection frame and preventing it from spilling inside the drying chamber, thus ensuring the cleanliness of the equipment. When the water collection frame is removed, the concave slide can be separated from the square slot seat, allowing the PET bottles to enter the drying concave frame. At the same time, the water can be introduced into the water storage tank for storage and cooling using a curved water pipe.

[0023] (3) The dehydration device for PET bottle flakes and its usage method are provided by opening a first recess and a second recess on the top of the cooling rectangular frame, and installing a first air guide pipe and a second air guide pipe inside them, and using a third air guide pipe. The structure can use a fan to extract the high temperature gas with moisture inside the drying recess and transport it inside the first air guide pipe and the second air guide pipe. During this process, the air inside the third air guide pipe will be preheated, thereby reducing the power required for the hot air blower to heat. After the high temperature hot air undergoes two heat exchanges, different temperature zones will appear at the first recess and the second recess. Combined with the air extraction of the side frame and the low temperature zone formed by the cooling of the water tank, the PET bottle flakes can be naturally cooled and kept at the appropriate temperature when they stay in different temperature zones, avoiding the re-moistening caused by a sudden drop in temperature, and also effectively utilizing the heat energy.

[0024] (4) The dehydration device for PET bottle flakes and its usage method are provided with heat-conducting aluminum plates at the bottom of the first air duct and the second air duct, and the heat-conducting aluminum plates are respectively located on both sides of the inner cavity of the cooling frame, so that the temperature inside the first air duct and the second air duct can be transferred to the inside of the cooling frame in an alternating manner, so that the PET bottle flakes can maintain a stable temperature reduction when they are in place, and avoid the occurrence of a sudden temperature drop. Attached Figure Description

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

[0026] Figure 2 This is a rear view of the dehydration and drying mechanism and the step-by-step cooling mechanism of the present invention;

[0027] Figure 3 This is a right view of the internal structure of the drying oven body of the present invention;

[0028] Figure 4 This is a schematic diagram of the drying oven body, dehydration tank, and annular sliding plate structure of the present invention;

[0029] Figure 5 This is a cross-sectional view of the drying oven body structure of the present invention.

[0030] Figure 6 For the present invention Figure 5 A magnified view of a section at point A in the middle;

[0031] Figure 7 This is a schematic diagram of the dewatering screen cylinder, arc-shaped scraper strip, and square groove seat structure of the present invention;

[0032] Figure 8 This is a cross-sectional view of the dewatering mesh cylinder structure of the present invention;

[0033] Figure 9 This is a schematic diagram of the water collection frame, the second horizontal tie rod, and the second spring structure of the present invention.

[0034] Figure 10 This is a schematic diagram of the concave slide, L-shaped pull plate, and spring rod structure of the present invention;

[0035] Figure 11 This is a schematic diagram of the drying concave frame, arc-shaped sealing plate frame, and inner polygonal rotating drum structure of the present invention;

[0036] Figure 12 This is a schematic diagram of the structure of the drying concave frame, hot air blower, and exhaust fan of the present invention;

[0037] Figure 13 This is a schematic diagram of the cylinder, double sliding sleeve plate, and retraction frame structure of the present invention.

[0038] Figure 14 This is a schematic diagram of the step-by-step cooling mechanism structure of the present invention;

[0039] Figure 15 This is a schematic diagram of the structure of the first air duct, the second air duct, and the heat-conducting aluminum plate of the present invention.

[0040] Figure 16 This is a schematic diagram of the feeding port, the first notch, and the second notch structure of the present invention;

[0041] Figure 17 This is a cross-sectional view of the water storage tank structure of the present invention.

[0042] In the diagram: 1. Dehydration and drying mechanism; 2. Gradual cooling mechanism; 101. Drying chamber body; 102. Dehydration trough; 103. Annular sliding plate; 104. Gear disk; 105. Sliding block; 106. Dehydration screen cylinder; 107. Arc-shaped scraper; 108. Square slot seat; 109. Motor; 110. Rotating rod; 111. Gear plate; 112. Vertical rotating rod; 113. Pulley; 114. Belt; 115. First bevel gear; 116. Pull-out port; 117. Water collection frame; 118. Concave sliding seat; 119. L-shaped pull plate; 120. Rebound rod; 121. First spring; 122. Bent water pipe; 123. First horizontal tie rod; 124. Drying concave frame; 125. Limiting sliding groove; 126. Arc-shaped sealing plate frame; 127. Inner polygonal rotating... 128. Cylinder; 129. Stirring blades; 130. Multi-faceted rotating rod; 131. Second bevel gear; 132. Ventilation mesh; 133. Second horizontal tie rod; 134. Stopping round seat; 135. Second spring; 136. Hot air blower; 137. Exhaust fan; 138. Cylinder; 139. Double sliding sleeve plate; 140. Retraction frame; 141. Arc-shaped toothed plate; 142. Third spring; 143. Inclined guide plate; 201. Cooling rectangular frame; 202. Horizontal rotating rod; 203. Transmission cylinder; 204. Conveyor belt; 205. Gear cylinder; 206. Feed port; 207. First notch; 208. Second notch; 209. First air guide pipe; 210. Second air guide pipe; 211. Heat-conducting aluminum plate; 212. Exhaust side frame; 213. Third air guide pipe; 214. Water storage tank. Detailed Implementation

[0043] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0044] Please see Figures 1-17 The present invention provides a technical solution: a dehydration device for PET bottle flakes, including a dehydration and drying mechanism 1;

[0045] Please refer to Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9 , Figure 10 , Figure 11 , Figure 12 and Figure 13The diagram illustrates the overall structure of the dehydration and drying mechanism 1. The mechanism includes a drying chamber body 101, with a dehydration trough 102 at its top. An annular sliding plate 103 is fixedly connected to the top of the drying chamber body 101 and outside the dehydration trough 102. A sliding block 105 is slidably mounted on the inner side of the annular sliding plate 103. A gear disk 104 is fixedly connected to the top of the sliding block 105, and a dehydration screen cylinder 106 is fixedly connected to the inner side of the gear disk 104, located inside the dehydration trough 102. Several arc-shaped scraper strips 107 are fixedly connected to the bottom of the gear disk 104 via a bracket, and these scraper strips are in contact with the inner wall of the dehydration trough 102. A square groove seat 108 is rotatably connected to the bottom of the dehydration screen cylinder 106 via a bearing. The square slot seat 108 is fixedly connected to the top of the inner cavity of the drying oven body 101 via a bracket. The bottom of the inner cavity of the drying oven body 101 is equipped with a step-by-step cooling mechanism 2. The rear side of the top of the drying oven body 101 is fixedly installed with a motor 109 via a bracket. The motor 109 is a servo motor. The output shaft of the motor 109 is fixedly connected to a rotating rod 110 via a coupling. The bottom end of the rotating rod 110 is rotatably connected to the top of the drying oven body 101 via a bearing. The surface of the rotating rod 110 is fixedly connected with a gear plate 111 that cooperates with the gear disk 104. The rear part of the drying oven body 101 is rotatably connected with a vertical rotating rod 112 via a bearing. The vertical rotating rod 112 and the rotating rod 110 are connected by a pulley 113 and a belt 114. The bottom end of the vertical rotating rod 112 is fixedly connected with a first bevel gear 115.

[0046] The surface of the drying oven body 101 is provided with a pull-out opening 116. A water collection frame 117 is provided inside the pull-out opening 116. A concave slide 118 is fixedly installed between the two sides of the inner cavity of the water collection frame 117 via a bracket. The square slot seat 108 is slidably connected to the inner side of the concave slide 118. L-shaped pull plates 119 are fixedly connected to both sides of the rear part of the water collection frame 117. Rebound rods 120 are fixedly connected to both sides of the rear part of the inner cavity of the drying oven body 101. The front end of the rebound rod 120 passes through the L-shaped pull plate 119 and extends to the inner side of the L-shaped pull plate 119. A first spring 121 is sleeved on the surface of the rebound rod 120 and located inside the L-shaped pull plate 119. A bent water pipe 122 is fixedly connected to both sides of the surface of the water collection frame 117 through openings. A rubber layer is provided at the bottom to improve sealing. A first horizontal tie rod 123 is fixedly connected to the surface of the water collection frame 117. A drying recess 124 is fixedly connected between the two sides of the inner cavity of the drying box body 101, and the drying recess 124 is located at the bottom of the dehydration tank 102. Limiting grooves 125 are provided on the upper part of both sides of the inner cavity of the drying recess 124. An arc-shaped sealing plate frame 126 is slidably installed between the inner sides of the two limiting grooves 125, and the arc-shaped sealing plate frame 126 fits against the inner side of the drying recess 124. The two arc-shaped sealing plate frames 126 are connected by openings. An inner polygonal rotating drum 127 is dynamically connected. A stirring blade 128 is fixedly connected to the surface of the inner polygonal rotating drum 127. A multi-faceted rotating rod 129 is slidably connected to the inner side of the inner polygonal rotating drum 127. The front end of the multi-faceted rotating rod 129 is rotatably connected to the front part of the inner cavity of the drying box body 101 through a bearing component. The rear end of the multi-faceted rotating rod 129 passes through the drying box body 101 and extends to the rear part of the drying box body 101. A second bevel gear 130 that meshes with the first bevel gear 115 is fixedly connected to one end of the drying box body 101 that extends to the rear part of the drying box body 101.

[0047] Both sides of the inner cavity of the drying recess 124 are provided with ventilation mesh holes 131. A hot air blower 135 and an exhaust fan 136 are respectively fixedly installed on both sides of the drying recess 124 through the openings. A second horizontal tie rod 132 is fixedly connected to the surface of the arc-shaped sealing plate frame 126, and the front end of the second horizontal tie rod 132 passes through the drying chamber body 101 and extends to the front of the drying chamber body 101. A stop seat 133 is fixedly connected to the surface of the second horizontal tie rod 132, and a second spring 134 is sleeved on the front part of the surface of the second horizontal tie rod 132. A cylinder 137 is fixedly connected to the right side of the drying chamber body 101 through a fixing plate. A double sliding sleeve plate 138 is fixedly connected to the front end of cylinder 137. The double sliding sleeve plate 138 is slidably installed on the surface of the first horizontal tie rod 123 and the second horizontal tie rod 132. The double sliding sleeve plate 138 is located between the second spring 134 and the stop round seat 133. A retraction frame 139 is fixedly installed at the front end of cylinder 137 through a bracket. An arc-shaped toothed plate 140 is slidably installed on the inner side of the retraction frame 139. A third spring 141 is fixedly connected between the arc-shaped toothed plate 140 and the inner wall of the retraction frame 139. An inclined guide plate 142 is fixedly installed between the two sides of the inner cavity of the drying chamber body 101 and at the bottom of the drying concave frame 124.

[0048] Please refer to Figure 14 , Figure 15 , Figure 16 and Figure 17The diagram illustrates the overall structure of the step-by-step cooling mechanism 2. The step-by-step cooling mechanism 2 includes a cooling rectangular frame 201, which is fixedly installed at the bottom of the inner cavity of the drying chamber body 101. The front end of the cooling rectangular frame 201 penetrates through the drying chamber body 101 and extends to the front of the drying chamber body 101. A horizontal rotating rod 202 is rotatably connected to the front and rear sides of the inner cavity of the cooling rectangular frame 201 via bearing components. A transmission cylinder 203 is fixedly installed on the surface of the horizontal rotating rod 202. A conveyor belt 204 is installed between the two transmission cylinders 203. The front horizontal... The right end of the rotating rod 202 passes through the cooling rectangular frame 201 and extends to the right side of the cooling rectangular frame 201. A gear cylinder 205 is fixedly connected to one end of the horizontal rotating rod 202 extending to the right side of the cooling rectangular frame 201. A feeding port 206 is provided on the rear side of the top of the cooling rectangular frame 201. A first recess 207 and a second recess 208 are respectively provided on the top of the cooling rectangular frame 201 and inside the drying chamber body 101. A first air guide pipe 209 is fixedly installed on the inner side of the first recess 207, and a second air guide pipe 210 is fixedly installed on the inner side of the second recess 208. The second air duct 210 is connected to the left end of the first air duct 209. The right end of the first air duct 209 passes through the drying oven body 101 and is connected to the exhaust fan 136. Heat-conducting aluminum plates 211 are fixedly connected to both sides of the bottom of the first air duct 209 and the second air duct 210, and are located inside the cooling rectangular frame 201. An exhaust side frame 212 is fixedly connected to the front left side of the cooling rectangular frame 201 through an opening. A third air duct 213 is fixedly installed on the left side of the exhaust side frame 212 through an opening, and the rear end of the third air duct 213 is attached to... The second air duct 210, the first air duct 209, and the drying box body 101 are connected to the hot air blower 135. A water storage tank 214 is fixedly installed on the front side of the top of the cooling rectangular frame 201 through an opening. The top of the water storage tank 214 is concave to prevent water leakage. At the same time, the drain pipe on the surface of the water storage tank 214 is located in the middle position, so that there is always water inside the water storage tank 214 for cooling. The water will only be discharged by the drain pipe when it reaches the middle position. The bottom end of the curved water pipe 122 is in contact with the top of the water storage tank 214.

[0049] This invention also discloses a method for using a dehydration device for PET bottle flakes, specifically including the following steps:

[0050] S1. Bottle flake dehydration: PET bottle flakes are put into the dehydration mesh cylinder 106, and the water on the surface of the PET bottle flakes is removed by the rotating dehydration mesh cylinder 106.

[0051] S2. Bottle flake drying: The dehydrated PET bottle flakes are placed inside the drying concave frame 124 and dried with hot air using a hot air blower 135.

[0052] S3. Temperature adaptation of bottle flakes: The dried PET bottle flakes are placed inside the cooling rectangular frame 201, and the temperature is adapted by the different temperature zones formed by the first air guide 209, the second air guide 210 and the third air guide 213.

[0053] The more specific steps for using the above-mentioned dehydration device for PET bottle flakes are as follows:

[0054] S1. Bottle flake dehydration: When in use, first put the cleaned PET bottle flakes into the dehydration mesh cylinder 106, then start the motor 109 and use the rotating rod 110 to drive the gear plate 111 to rotate. Since the gear plate 111 and the gear disk 104 mesh, the entire dehydration mesh cylinder 106 is driven to rotate rapidly by the meshing of the sliding block 105 and the annular sliding groove plate 103, so that the dehydration mesh cylinder 106 throws out the water stains on the surface of the PET bottle flakes. Then the arc-shaped scraper 107 scrapes off the water stains on the surface of the dehydration tank 102, and then the arc-shaped guide of the arc-shaped scraper 107 makes the water flow downward and finally fall into the water collection frame 117.

[0055] S2. Bottle Flake Drying: After dehydration is complete, the cylinder 137 first pulls the double sliding plate 138 backward. When the double sliding plate 138 moves backward, it first uses its contact with the stop seat 133 to press the second horizontal pull rod 132 backward synchronously. Then, the second horizontal pull rod 132 pushes the arc-shaped sealing plate frame 126 backward to scrape the material inside the drying recess 124. After scraping is completed, the cylinder 137 pushes the double sliding plate 138 to pull the arc-shaped sealing plate frame 126 back into the drying recess 124 by the pressure of the second spring 134. Then, the cylinder 137 continues to push the double sliding plate 138 forward. At this time, the arc-shaped sealing plate frame 126 is blocked and will not move forward, but the double sliding plate 138 will push... The first horizontal pull rod 123 drives the water collection frame 117 to be pulled out from the inside of the pull-out port 116. As the water collection frame 117 moves forward, the concave slide seat 118 will disengage from the square groove seat 108. At this time, the square groove seat 108 loses its obstruction, reducing the rotation speed of the dehydration screen cylinder 106, causing the PET bottle flakes inside the dehydration screen cylinder 106 to fall into the drying concave frame 124. At the same time, the curved water pipe 122 moves and its bottom end is located at the water inlet of the water storage tank 214. Then, the water inside the water collection frame 117 flows into the water storage tank 214 for storage. At this time, a low temperature zone is formed at the bottom of the water storage tank 214. After the PET bottle flakes fall into the drying concave frame 124, the cylinder 137 is activated to drive the double sliding plate 13. 8. Move backward. At this time, the water collection frame 117 is pulled backward and reset by the elastic force of the first spring 121. At this time, the water collection frame 117 also closes the top of the drying concave frame 124. Then, the cleaned PET bottle flakes are placed inside the dehydration mesh cylinder 106 again. As the motor 109 is restarted, the vertical rotating rod 112 drives the first bevel gear 115 to rotate under the transmission action of the pulley 113 and the belt 114. At this time, since the second bevel gear 130 meshes with the first bevel gear 115, the multi-faceted rotating rod 129 drives the inner polygonal rotating cylinder 127 and the stirring blades 128 to rotate. At the same time, the hot air blower 135 and the exhaust fan 136 start synchronously. The hot air blower 135 uses the third air guide. The pipe 213 draws in air and then heats it before sending it into the drying recess 124 to dry the PET bottle flakes. Then, the exhaust fan 136 draws out the high-temperature gas with moisture and transports it inside the first air duct 209 and the second air duct 210. At this time, when the high-temperature hot air passes through the first air duct 209, it forms a first temperature zone at the first recess 207. Then, when the hot air enters the second air duct 210, it forms a second temperature zone at the second recess 208. And because the hot air will heat the third air duct 213 twice during the flow of hot air, the first temperature zone is higher than the second temperature zone. The air inside the third air duct 213 can effectively reduce the power of the hot air blower 135 during heating after preheating.

[0056] S3. Bottle Flake Temperature Adjustment: After drying is complete, cylinder 137 is restarted to pull the arc-shaped sealing plate frame 126 backward, pushing out the PET bottle flakes inside the drying recess 124. Then, the PET bottle flakes fall onto the top of the conveyor belt 204 via the inclined guide plate 142 and the feeding port 206. Cylinder 137 then pushes the arc-shaped sealing plate frame 126 back to its original position. At this time, the arc-shaped toothed plate 140 meshes with the gear cylinder 205, driving the gear cylinder 205 and the transmission cylinder 203 to rotate. The rotation of the transmission cylinder 203 drives the conveyor belt 204 to move. The transmission of the conveyor belt 204 then moves the PET bottle flakes on top. Each time the arc-shaped toothed plate 140 drives the gear cylinder 205 to rotate, the conveyor belt 204 moves a constant distance. As the cylinders 137 continue to start, the conveyor belt 204 will first move the PET bottle flakes to the bottom of the first air duct 209 and stay there for a period of time. At this time, the heat-conducting aluminum plates 211 on both sides will initially cool the PET bottle flakes, reducing their initial temperature to the same temperature as the first notch 207. When the PET bottle flakes move to the bottom of the second air duct 210, they will undergo secondary cooling. When the PET bottle flakes move to the low-temperature zone at the bottom of the water tank 214, they will be cooled in conjunction with the exhaust side frame 212 to finally cool the PET bottle flakes. When the PET bottle flakes are discharged from the cooling frame 201, they will have adapted to the low temperature, effectively preventing the generation of water vapor and the re-moistening of the PET bottle flakes.

[0057] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A dehydration device for PET bottle flakes, comprising a dehydration and drying mechanism (1), characterized in that: The dehydration and drying mechanism (1) includes a drying chamber body (101), a dehydration trough (102) is provided on the top of the drying chamber body (101), an annular sliding plate (103) is fixedly connected to the top of the drying chamber body (101) and outside the dehydration trough (102), a sliding block (105) is slidably installed on the inner side of the annular sliding plate (103), a gear disk (104) is fixedly connected to the top of the sliding block (105), and a dehydration screen cylinder (106) is fixedly connected to the inner side of the gear disk (104). Inside the dehydration tank (102), the bottom of the gear disk (104) is fixedly connected to an arc-shaped scraper (107) via a bracket. Several arc-shaped scrapers (107) are provided, and the arc-shaped scrapers (107) are in contact with the inner wall of the dehydration tank (102). The bottom end of the dehydration screen cylinder (106) is rotatably connected to a square slot seat (108) via a bearing. The square slot seat (108) is fixedly connected to the top of the inner cavity of the drying box body (101) via a bracket. A step-by-step cooling mechanism (2) is installed at the bottom of the inner cavity of the drying box body (101). The surface of the drying oven body (101) is provided with a pull-out opening (116). A water collection frame (117) is provided inside the pull-out opening (116). A concave slide (118) is fixedly installed between the two sides of the inner cavity of the water collection frame (117) by a bracket. The square slot seat (108) is slidably connected to the inner side of the concave slide (118). L-shaped pull plates (119) are fixedly connected to both sides of the rear of the water collection frame (117). The rear of the inner cavity of the drying oven body (101) is... Both sides are fixedly connected with a spring rod (120), and the front end of the spring rod (120) passes through the L-shaped pull plate (119) and extends to the inside of the L-shaped pull plate (119). A first spring (121) is sleeved on the surface of the spring rod (120) and located inside the L-shaped pull plate (119). Both sides of the surface of the water collection frame (117) are fixedly connected with a bent water pipe (122) through openings. A first horizontal pull rod (123) is fixedly connected to the surface of the water collection frame (117). A drying recess (124) is fixedly connected between the two sides of the inner cavity of the drying chamber body (101), and the drying recess (124) is located at the bottom of the dehydration tank (102). Limiting grooves (125) are opened on the upper part of both sides of the inner cavity of the drying recess (124). An arc-shaped sealing plate frame (126) is slidably installed between the inner sides of the two limiting grooves (125), and the arc-shaped sealing plate frame (126) is in contact with the inner side of the drying recess (124). An inner polygonal rotating cylinder (127) is rotatably connected between the two arc-shaped sealing plate frames (126) through an opening. (127) has a stirring blade (128) fixedly connected to its surface. The inner side of the inner polygonal rotating cylinder (127) is slidably connected to a multi-faceted rotating rod (129). The front end of the multi-faceted rotating rod (129) is rotatably connected to the front of the inner cavity of the drying box body (101) through a bearing component. The rear end of the multi-faceted rotating rod (129) passes through the drying box body (101) and extends to the rear of the drying box body (101). The end of the drying box body (101) extending to the rear of the drying box body (101) is fixedly connected to a second bevel gear (130) that meshes with the first bevel gear (115). The step-by-step cooling mechanism (2) includes a cooling rectangular frame (201), which is fixedly installed at the bottom of the inner cavity of the drying oven body (101). The front end of the cooling rectangular frame (201) penetrates through the drying oven body (101) and extends to the front of the drying oven body (101). The front and rear parts of the inner cavity of the cooling rectangular frame (201) are rotatably connected to a horizontal rotating rod (202) through bearing components. The surface of the horizontal rotating rod (202) A transmission cylinder (203) is fixedly installed, and a conveyor belt (204) is installed between the two transmission cylinders (203). The right end of the front horizontal rotating rod (202) passes through the cooling rectangular frame (201) and extends to the right side of the cooling rectangular frame (201). A gear cylinder (205) is fixedly connected to one end of the horizontal rotating rod (202) extending to the right side of the cooling rectangular frame (201). A feeding port (206) is opened on the rear side of the top of the cooling rectangular frame (201). The cooling rectangular frame (201) has a first recess (207) and a second recess (208) respectively opened at the top and inside the drying oven body (101). A first air guide pipe (209) is fixedly installed on the inner side of the first recess (207), and a second air guide pipe (210) is fixedly installed on the inner side of the second recess (208). The second air guide pipe (210) is connected to the left end of the first air guide pipe (209). The right end of the first air guide pipe (209) passes through the drying oven body (101) and is connected to the exhaust fan (136). The first air guide pipe (209) and the second air guide pipe (210) are located on both sides of the bottom of the cooling rectangular frame (207) and inside the drying oven body (101). The interior of the 01) is fixedly connected with a heat-conducting aluminum plate (211). The front part of the left side of the cooling rectangular frame (201) is fixedly connected with an exhaust side frame (212) through an opening. The left side of the exhaust side frame (212) is fixedly installed with a third air duct (213) through an opening. The rear end of the third air duct (213) passes through the second air duct (210), the first air duct (209) and the drying box body (101) in sequence and is connected to the hot air blower (135). The front side of the top of the cooling rectangular frame (201) is fixedly installed with a water storage tank (214) through an opening. The bottom end of the bent water pipe (122) is in contact with the top of the water storage tank (214).

2. The dehydration device for PET bottle flakes according to claim 1, characterized in that: A motor (109) is fixedly installed on the rear side of the top of the drying box body (101) by a bracket. The output shaft of the motor (109) is fixedly connected to a rotating rod (110) by a coupling. The bottom end of the rotating rod (110) is rotatably connected to the top of the drying box body (101) by a bearing. A gear plate (111) that cooperates with a gear disk (104) is fixedly connected to the surface of the rotating rod (110). A vertical rotating rod (112) is rotatably connected to the rear of the drying box body (101) by a bearing. The vertical rotating rod (112) and the rotating rod (110) are connected by a pulley (113) and a belt (114). The bottom end of the vertical rotating rod (112) is fixedly connected to a first bevel gear (115).

3. The dehydration device for PET bottle flakes according to claim 2, characterized in that: Both sides of the inner cavity of the drying concave frame (124) are provided with ventilation mesh holes (131). Both sides of the drying concave frame (124) are fixedly installed with a hot air blower (135) and an exhaust fan (136) respectively through openings. The surface of the arc-shaped sealing plate frame (126) is fixedly connected with a second horizontal tie rod (132), and the front end of the second horizontal tie rod (132) penetrates through the drying box body (101) and extends to the front of the drying box body (101). The surface of the second horizontal tie rod (132) is fixedly connected with a stop round seat (133), and a second spring (134) is sleeved on the front of the surface of the second horizontal tie rod (132).

4. The dehydration device for PET bottle flakes according to claim 3, characterized in that: A cylinder (137) is fixedly connected to the right side of the drying oven body (101) via a fixing plate. A double sliding plate (138) is fixedly connected to the front end of the cylinder (137). The double sliding plate (138) is slidably installed on the surfaces of the first horizontal tie rod (123) and the second horizontal tie rod (132). The double sliding plate (138) is located between the second spring (134) and the stop round seat (133). A retraction frame (139) is fixedly installed at the front end of the cylinder (137) via a bracket. An arc-shaped toothed plate (140) is slidably installed on the inner side of the retraction frame (139). A third spring (141) is fixedly connected between the arc-shaped toothed plate (140) and the inner wall of the retraction frame (139). An inclined guide plate (142) is fixedly installed between the two sides of the inner cavity of the drying oven body (101) and at the bottom of the drying concave frame (124).

5. The method of using the PET bottle flake dehydration device according to claim 4, characterized in that: Specifically, the following steps are included: S1. Bottle flake dehydration: Put the PET bottle flakes into the dehydration mesh cylinder (106) and use the rotating dehydration mesh cylinder (106) to remove the water from the surface of the PET bottle flakes; S2, Bottle flake drying: The dehydrated PET bottle flakes are placed inside the drying concave frame (124) and dried with hot air using a hot air blower (135); S3. Temperature adaptation of bottle flakes: The dried PET bottle flakes are placed inside the cooling rectangular frame (201) and the temperature is adapted by using the different temperature zones formed by the first air guide (209), the second air guide (210) and the third air guide (213).

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