A polyester pellet pretreatment device

Abstract

The application belongs to the technical field of polyester processing, and particularly relates to a polyester master batch pretreatment device, which comprises a box body and a support, the box body is provided with a partition plate, the box body is divided into a drying cavity and a discharging cavity, the partition plate is provided with a material leakage hole, the partition plate is provided with a screening mechanism, the screening mechanism comprises a first grid frame and a second grid frame, the first grid frame is provided with a material leakage sleeve, the second grid frame is provided with a screening sleeve, the drying cavity is further provided with a drying mechanism, the drying mechanism comprises an electric heating air bellow and a material turning assembly, the material turning assembly comprises a strip-shaped plate and a rotating roller, the rotating roller is provided with a gear, the rotating roller is provided with a gear, the drying cavity is processed with a linear rack, the discharging cavity comprises a first material guiding inclined plate and a first discharging port; the material leakage hole is provided, the material leakage sleeve and the screening sleeve are arranged in a sleeving mode, so that the impurity dust of the material can be filtered, and the good and bad product materials can be screened while the material is dried.

Description

Technical Field

[0001] This invention belongs to the field of polyester processing technology, and specifically relates to a polyester masterbatch pretreatment device. Background Technology

[0002] Polyester is a high molecular weight compound produced by polycondensation of terephthalic acid (PTA) and ethylene glycol (EG) to form polyethylene terephthalate (PET). Polyester chips are sheet-like polyester granules used to manufacture polyester staple fibers and polyester filaments, and are raw materials supplied to polyester fiber companies for processing fibers and related products.

[0003] Existing data indicates that polyester masterbatch easily absorbs moisture from the air, leading to rehydration. Therefore, pretreatment is required before polyester masterbatch is put into use. This involves drying the polyester masterbatch to avoid affecting its performance. Existing drying equipment can dry polyester masterbatch, but it does not have the function of screening it. The dried polyester masterbatch needs to be screened on another device to remove impurities, dust, defective products, and good products. Therefore, we propose a polyester masterbatch pretreatment device. Summary of the Invention

[0004] The purpose of this invention is to provide a polyester masterbatch pretreatment device to solve the problems existing in the prior art.

[0005] To achieve the above-mentioned technical objectives, the technical solution adopted by the present invention is as follows:

[0006] A polyester masterbatch pretreatment device includes a box and a support. A partition is fixedly installed in the middle of the box, and the box is divided into a drying chamber and a discharge chamber by the partition.

[0007] The partition plate has a plurality of material leakage holes and is also provided with a screening mechanism. The screening mechanism includes a first grid frame and a second grid frame, which are stacked on top of each other. The first grid frame is fixedly provided with a plurality of material leakage sleeves, and the second grid frame is fixedly provided with a plurality of material screening sleeves. Each material leakage sleeve is slidably sleeved inside each of the material leakage holes, and each material screening sleeve is slidably sleeved inside each of the material leakage sleeves. The first grid frame and the second grid frame are respectively provided with linear drive components, which are disposed inside the discharge chamber.

[0008] The drying chamber is equipped with a switchable door and a drying mechanism. The drying mechanism includes an electric heating air box and a material turning assembly. The electric heating air box is fixedly installed on the top of the switchable door. The material turning assembly includes a strip plate and multiple rotating rollers. The strip plate extends forward and backward into the drying chamber. The multiple rotating rollers are evenly arranged on the lower side of the strip plate and are rotatably connected to the strip plate. Several blades are fixedly installed on the side of each rotating roller. Adjacent rotating rollers are connected by belt drive. A gear is fixedly installed on the last rotating roller. A straight rack matching the gear is machined on the rear inner wall of the drying chamber. A reciprocating drive mechanism is also provided between the strip plate and the drying chamber. A sliding positioning mechanism is provided between the rear end of the strip plate and the rear inner wall of the drying chamber.

[0009] The discharge chamber includes a first guide plate and a first discharge port. The higher side of the first guide plate is fixed to the upper side of the discharge chamber, and the lower side of the first guide plate extends to the first discharge port.

[0010] A plurality of positioning rods are fixedly provided on the lower side of the partition, which slide through the first grid frame and the second grid frame. The linear drive assembly includes an electric telescopic rod. The first grid frame is fixedly connected to the telescopic end of one of the electric telescopic rods, and the second grid frame is fixedly connected to the telescopic end of the other electric telescopic rod.

[0011] The reciprocating drive mechanism includes a motor, a mounting platform, and a screw. The motor is mounted on the outer wall of the drying chamber, the mounting platform is fixedly mounted on the upper end of the strip plate, the screw is threadedly rotatably connected to the mounting platform, the screw is located inside the drying chamber and extends to the left and right, and the motor and the screw are connected by transmission.

[0012] The sliding positioning mechanism includes a positioning slide rail and a positioning slider. The positioning slide rail is disposed on the inner wall of the rear side of the drying chamber, and the positioning slider is installed and fixed to the rear end of the strip plate and is slidably connected to the positioning slide rail.

[0013] The drying chamber is also provided with an exhaust vent on the side. The partition is hollow inside. The exhaust vent is connected to an air duct. The air duct is connected to one side of the partition. An air outlet is provided on the other side of the partition.

[0014] The air outlet is equipped with a dustproof screen.

[0015] A blower unit is installed on one side of the outer wall of the discharge chamber. A waste discharge port is opened on the side of the discharge chamber opposite to the blower unit. A first rotating plate is elastically hinged to the lower side of the discharge chamber near the blower unit. A second rotating plate is movably hinged to the lower side of the discharge chamber near the waste discharge port. The end of the first rotating plate extends to the lower side of the second rotating plate. In the initial state, the first rotating plate is in a horizontal state under the elastic action, and the second rotating plate is pushed to a horizontal state by the first rotating plate.

[0016] The discharge chamber is also equipped with a discharge mechanism, which includes multiple first push rods and multiple second push rods. Each of the first push rods is fixedly connected to the bottom of the first grid frame, and each first push rod slides through the second grid frame. Each of the second push rods is fixedly connected to the bottom of the second grid frame. Both the first and second push rods correspond to the first rotating plate. The first push rods are located on the side closer to the fan unit, and the second push rods are located on the side farther from the fan unit. The discharge chamber is also equipped with a second guide ramp, located above the first guide ramp. When the second grid frame moves downwards, the second push rod pushes the far end of the first rotating plate to flip, and the second guide ramp then aligns with the position of the first rotating plate. The discharge chamber also has a defective product discharge port that matches the lower side of the second guide ramp. A limiting ring that matches the second rotating plate is also provided inside the discharge chamber.

[0017] A metal spring plate is also fixedly connected to the far end of the first rotating plate.

[0018] This invention, by setting a material leakage hole and simultaneously setting interlocking material leakage sleeves and screening sleeves, can achieve the removal of impurities and dust from materials and the screening of defective and good materials while drying them. Attached Figure Description

[0019] The present invention can be further illustrated by the non-limiting embodiments given in the accompanying drawings.

[0020] Figure 1 This is a schematic diagram of the structure of the internal first grid frame, second grid frame, and partition plate stacked together in Embodiment 1 of the present invention;

[0021] Figure 2 for Figure 1 Enlarged schematic diagram of the structure at point A;

[0022] Figure 3 This is a schematic diagram of the structure of the first grid frame and the second grid frame when separated according to Embodiment 1 of the present invention;

[0023] Figure 4This is a schematic diagram of the structure of the internal second grid frame detached from the first grid frame in Embodiment 1 of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of the internal first grid frame when it detaches from the partition in Embodiment 1 of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of the first rotating plate and the second rotating plate when the internal first grid frame, the second grid frame, and the partition are stacked in Embodiment 2 of the present invention;

[0026] Figure 7 This is a schematic diagram of the structure of the first rotating plate and the second rotating plate when the internal second grid frame detaches from the first grid frame in Embodiment 2 of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of the first rotating plate and the second rotating plate when the internal first grid frame detaches from the partition in Embodiment 2 of the present invention;

[0028] The symbols for the main components are explained below:

[0029] Box body 100, bracket 101, partition 110, material leakage hole 111, first grid frame 112, second grid frame 113, material leakage sleeve 114, screening sleeve 115, positioning rod 116, electric telescopic rod 117, drying chamber 120, linear rack 1201, opening and closing door 121, electric heating air box 122, strip plate 123, rotating roller 124, blade 1241, gear 1242, motor 125, mounting platform 126, screw 127, positioning slide rail 128, positioning slider 129, discharge chamber 130, first guide inclined plate 131, first discharge port 132, exhaust port 140, air duct 141, dustproof net 142;

[0030] Fan unit 200, waste discharge port 201, first rotating plate 202, second rotating plate 203, first push rod 204, second push rod 205, second guide plate 206, defective product discharge port 207, limit ring 208, metal spring plate 209. Detailed Implementation

[0031] To enable those skilled in the art to better understand the present invention, the technical solution of the present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0032] Example 1, such as Figures 1 to 5 The polyester masterbatch pretreatment device shown includes a box 100 and a support 101. A partition 110 is fixedly installed in the middle of the box 100, and the box 100 is divided into a drying chamber 120 and a discharge chamber 130 by the partition 110.

[0033] The partition 110 has a plurality of material leakage holes 111 and is also provided with a screening mechanism. The screening mechanism includes a first grid frame 112 and a second grid frame 113. The first grid frame 112 and the second grid frame 113 are stacked. The first grid frame 112 is fixedly provided with a plurality of material leakage sleeves 114 and the second grid frame 113 is fixedly provided with a plurality of material screening sleeves 115. Each material leakage sleeve 114 is slidably sleeved inside each material leakage hole 111 and each material screening sleeve 115 is slidably sleeved inside each material leakage sleeve 114. The first grid frame 112 and the second grid frame 113 are respectively provided with linear drive components, which are located inside the discharge chamber 130.

[0034] The drying chamber 120 is equipped with a switch door 121 and a drying mechanism. The drying mechanism includes an electric heating air box 122 and a material turning assembly. The electric heating air box 122 is fixedly installed on the top of the switch door 121. The material turning assembly includes a strip plate 123 and multiple rotating rollers 124. The strip plate 123 extends back and forth into the drying chamber 120. The multiple rotating rollers 124 are evenly arranged on the lower side of the strip plate 123 and are rotatably connected to the strip plate 123. Several blades 1241 are fixedly installed on the side of each rotating roller 124. Adjacent rotating rollers 124 are connected by belt drive. A gear 1242 is fixedly installed on the last rotating roller 124. A straight rack 1201 matching the gear 1233 is machined on the rear inner wall of the drying chamber 120. A reciprocating drive mechanism is also provided between the strip plate 123 and the drying chamber 120. A sliding positioning mechanism is provided between the rear end of the strip plate 123 and the rear inner wall of the drying chamber 120.

[0035] The discharge chamber 130 includes a first guide plate 131 and a first discharge port 132. The higher side of the first guide plate 131 is fixed to the upper side of the discharge chamber 130, and the lower side of the first guide plate 131 extends to the first discharge port 132.

[0036] The box 100 is divided into a drying chamber 120 and a discharge chamber 130 by a partition 110. The drying chamber 120 is used to dry polyester masterbatch, and the discharge chamber 130 is used to discharge materials.

[0037] The material leakage hole 111 of the partition 110 is used to leak out large particles of good polyester masterbatch (hereinafter referred to as "material" instead of "polyester masterbatch"). The first grid frame 112 of the screening mechanism is used to fix the material leakage sleeve 114. The material leakage sleeve 114 is fitted inside the material leakage hole 111 and is used to leak out small particles of defective material. The second grid frame 113 is used to fix the screening sleeve 115. The screening sleeve 115 is fitted inside the material leakage sleeve 114 and is used to leak out impurities and dust in the material. The first grid frame 112 and the second grid frame 113 are hollow structures, so they will not obstruct the leakage of materials and impurities and dust.

[0038] In the initial state, such as Figure 1 and Figure 2 As shown, the first grid frame 112 and the second grid frame 113 are stacked one on top of the other, so that the material leakage sleeve 114 and the screening sleeve 115 are sequentially fitted inside the material leakage hole 111, so that only impurities and dust can be leaked out.

[0039] The drying process for materials includes the following steps:

[0040] Step ①: Before drying the material, turn off the electric heating box 122, open the switch door 121, and spread the material evenly on the surface of the partition 110.

[0041] Step 2: Close the switch door 121, open the electric heating box 122, the electric heating box 122 blows hot air into the drying chamber 120, and at the same time starts the reciprocating drive mechanism, so that the strip plate 123 reciprocates in the drying chamber 120. The sliding positioning mechanism is used to position the movement of the strip plate 123.

[0042] Step 3: Since multiple rotating rollers 124 are rotatably connected to the lower side of the strip plate 123, and a gear 1242 is provided on the last rotating roller 124, during the reciprocating motion of the strip plate 123, the rotating roller 124 can be rotated by the cooperation of the gear 1242 and the linear rack 1201 on the inner wall of the rear side of the drying chamber 120. Since adjacent rotating rollers 124 are connected by belt drive, each rotating roller 124 rotates at the same time. When the rotating roller 124 rotates, the blades 1241 on the side of the rotating roller 124 rotate, thereby turning over the material spread flat inside the drying chamber 120 through the rotation of the blades 1241, so that the hot air can dry the flat material comprehensively. While the blades 1241 turn the material over for drying, the impurities and dust in the material can be leaked through the screen sleeve 115 to the discharge chamber 130, and discharged through the first guide inclined plate 131 to the first discharge port 132.

[0043] Step 4: Once the first discharge port 132 no longer discharges impurities or dust, and the material is dried, the dried material can be screened. During the screening process, the linear drive assembly of the second grid frame 113 drives the second grid frame 113 downwards, separating it from the first grid frame 112. Figure 4 As shown, at this time, the partition 110 will be able to leak out the defective material. The turning component continues to work, which can leak the defective material in the dried material into the discharge chamber 130, and then guide it through the first guide plate 131 to the first discharge port 132 for collection.

[0044] Step 5: After the first discharge port 132 stops discharging defective materials, the linear drive assembly of the first grid frame 112 drives the first grid frame 112 to move downwards, disengaging it from the partition 110, as shown. Figure 5As shown, at this time, the material leakage hole 111 of the partition 110 is fully open and can leak out good material. The material turning component continues to work, and all the remaining good material is leaked into the discharge chamber 130, and then discharged and collected through the first guide inclined plate 131 to the first discharge port 132.

[0045] This embodiment achieves the filtration of impurities and dust from materials, as well as the screening of defective and good materials, by setting a material leakage hole and simultaneously setting interlocking material leakage sleeves and screening sleeves.

[0046] As a further explanation of the linear drive component in this embodiment, such as Figure 1 , Figure 4 as well as Figure 5 As shown, a plurality of positioning rods 116 are fixedly provided on the lower side of the partition 110, which slide through the first grid frame 112 and the second grid frame 113. The linear drive assembly includes an electric telescopic rod 117. The first grid frame 112 is fixedly connected to the telescopic end of one of the electric telescopic rods 117, and the second grid frame 113 is fixedly connected to the telescopic end of the other electric telescopic rod 117.

[0047] The positioning rod 116 slides through the first grid frame 112 and the second grid frame 113, so that the first grid frame 112, the second grid frame 113 and the partition 110 can be positioned so that there will be no deviation in position. At the same time, the linear drive component adopts an electric telescopic rod 117, which drives the first grid frame 112 and the second grid frame 113 to separate through the telescopic end of the electric telescopic rod 117. It is easy to assemble, and the technology is mature and the installation difficulty is low.

[0048] As a further explanation of the reciprocating drive mechanism and the sliding positioning mechanism in this embodiment, such as Figure 1 and Figure 2 As shown, the reciprocating drive mechanism includes a motor 125, a mounting platform 126, and a screw 127. The motor 125 is mounted on the outer wall of the drying chamber 120. The mounting platform 126 is fixedly mounted on the upper end of the strip plate 123. The screw 127 is threadedly connected to the mounting platform 126. The screw 127 is located inside the drying chamber 120 and extends to the left and right. The motor 125 and the screw 127 are connected by transmission.

[0049] The sliding positioning mechanism includes a positioning slide rail 128 and a positioning slider 129. The positioning slide rail 128 is disposed on the inner wall of the rear side of the drying chamber 120, and the positioning slider 129 is installed and fixed on the rear end of the strip plate 123 and is slidably connected to the positioning slide rail 128.

[0050] The positioning slide rail 128 and the positioning slider 129 work together to prevent the strip plate 123 from tilting. After the motor 125 starts, it drives the screw 127 to rotate. Since the mounting platform 126 of the strip plate 123 is threadedly connected to the screw 127, the mounting platform 126 can drive the strip plate 123 to move relative to the screw 127. The reciprocating motion of the strip plate 123 can be achieved by regularly changing the rotation direction of the output shaft of the motor 125. Optionally, a reversing switch can be set at both ends of the positioning slide rail 128. When the positioning slider 129 moves to both ends of the positioning slide rail 128, the rotation direction of the output shaft of the motor 125 can be automatically changed by the reversing switch.

[0051] As a further improvement to the sliding positioning mechanism in this embodiment, such as Figure 1 , Figure 4 as well as Figure 5 As shown, the drying chamber 120 is also provided with an exhaust vent 140 on the side. The partition 110 is hollow inside. The exhaust vent 140 is connected to an air duct 141. The air duct 141 is connected to one side of the partition 110. An air outlet is provided on the other side of the partition 110. A dustproof net 142 is installed at the air outlet.

[0052] During the drying process, the hot air inside the drying chamber 120 is discharged through the exhaust port 140, and then enters the hollow space inside the partition 110 through the air duct 141, thereby heating the partition 110 with the hot air, raising the temperature of the partition 110, improving the overall drying of the material, and finally being discharged through the air outlet. The dustproof net 142 installed at the air outlet can prevent dust from entering the partition 110 and also has a protective function.

[0053] Example 2 is based on Example 1. Since impurities, dust, defective materials, and good materials are all discharged through the first discharge port 132, mixing can easily occur during the collection process if not handled carefully. To achieve automatic separation and discharge of materials, the following further improvements are made: Figures 6 to 8 As shown, a fan unit 200 is installed on one side of the outer wall of the discharge chamber 130. A waste discharge port 201 is opened on the side of the discharge chamber 130 opposite to the fan unit 200. A first rotating plate 202 is elastically hinged to the lower side of the discharge chamber 130 near the fan unit 200. A second rotating plate 203 is movably hinged to the lower side of the discharge chamber 130 near the waste discharge port 201. The end of the first rotating plate 202 extends to the lower side of the second rotating plate 203. In the initial state, the first rotating plate 202 is in a horizontal state under the elastic action, and the second rotating plate 203 is pushed to a horizontal state by the first rotating plate 202.

[0054] The discharge chamber 130 is also equipped with a discharge mechanism, which includes multiple first push rods 204 and multiple second push rods 205. Each of the first push rods 204 is fixedly connected to the bottom of the first grid frame 112, and each first push rod 204 slides through the second grid frame 113. Each of the multiple second push rods 205 is fixedly connected to the bottom of the second grid frame 113. Both the first push rods 204 and second push rods 205 correspond to the first rotating plate 202. The first push rods 204 are located on the side closer to the fan unit 200, and the second push rods 205 are located away from the fan unit 200. On one side of the machine unit 200, the discharge chamber 130 is also provided with a second guide inclined plate 206. The second guide inclined plate 206 is located above the first guide inclined plate 131. When the second grid frame 113 moves downward, the second push rod 205 pushes the far end of the first rotating plate 202 to flip, and the second guide inclined plate 206 is exactly aligned with the position of the first rotating plate 202. The discharge chamber 130 is also provided with a defective product discharge port 207 that matches the lower side of the second guide inclined plate 206. The discharge chamber 130 is also provided with a limiting ring 208 that matches the second rotating plate 203.

[0055] In the initial state, the first rotating plate 202 is in a horizontal position under the action of elasticity, and the second rotating plate 203 is pushed to a horizontal position by the first rotating plate 202. At this time, the discharge chamber 130 is divided into a separate space by the partition 110, the first rotating plate 202, and the second rotating plate 203, as shown below. Figure 6 As shown, in step ③ of embodiment 1, by turning on the blower unit 200 to blow air into the discharge chamber 130, the leaked impurities and dust will be blown out directly through the impurity discharge port 201.

[0056] In step ④ of Embodiment 1, when "the second grid frame 113 moves downward and disengages from the first grid frame 112", the fan unit 200 is first shut down. Since multiple second push rods 205 are installed at the lower end of the second grid frame 113, and since the second push rods 205 are located on the side away from the fan unit 200, the second push rods 205 will push the far end of the first rotating plate 202, overcoming the elastic force of the elastic hinge, causing the first rotating plate 202 to rotate downward. Simultaneously, since the second rotating plate 203 is movably hinged, the second rotating plate 203 will also rotate downward. At this time, if... Figure 7 As shown, the far end of the first rotating plate 202 will be flipped to correspond to the second guide inclined plate 206. At the same time, the second rotating plate 203 will be separated from the first rotating plate 202 under the limit of the limiting ring 208. At this time, the leaked defective material will be discharged from the defective discharge port 207 through the guidance of the first rotating plate 202, the second rotating plate 203 and the second guide inclined plate 206, so that impurities and dust are separated from defective material.

[0057] In step ⑤ of Embodiment 1, when "the first grid frame 112 moves downward and separates from the partition plate 110", since multiple first push rods 204 are provided at the bottom of the first grid frame 112, and the first push rods 204 slide through the second grid frame 113, the first push rods 204 are not obstructed by the second grid frame 113. Furthermore, since the first push rods 204 are located on the side closer to the wind turbine unit 200, during the downward movement of the first push rods 204, they will further push the first rotating plate 202, overcoming the elastic force of the elastic hinge, and rotating downward again. At this time, as... Figure 8 As shown, the first rotating plate 202 rotates downward away from the second guide plate 206 and into the first guide plate 131. At this time, the leaked good material will guide the first rotating plate 202, the second rotating plate 203 and the first guide plate 131, and be discharged from the first discharge port 132, thereby realizing the separation of defective material and good material.

[0058] After the first grid frame 112 and the second grid frame 113 are reinserted into the discharge hole 111, the first rotating plate 202 will automatically return to its original position under the elastic force of the elastic hinge, and at the same time push the second rotating plate 203 back to its original position.

[0059] As a further optimization of this embodiment, such as Figures 7 to 8 As shown, a metal spring plate 209 is also fixedly connected to the far end of the first rotating plate 202.

[0060] The metal spring plate 209 has a deformable resilience, which allows the first rotating plate 202 to extend into the second guide plate 206 through the metal spring plate 209. When the first rotating plate 202 continues to flip down and return to its original position, the metal spring plate 209 will not obstruct the movement of the first rotating plate 202.

[0061] The above embodiments are merely illustrative of the principles and effects of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in the present invention should still be covered by the claims of the present invention.

Claims

1. A polyester masterbatch pretreatment device, comprising a housing and a support, characterized in that: A partition is fixedly installed in the middle of the box, and the box is divided into a drying chamber and a discharge chamber by the partition. The partition plate has a plurality of material leakage holes and is also provided with a screening mechanism. The screening mechanism includes a first grid frame and a second grid frame, which are stacked on top of each other. The first grid frame is fixedly provided with a plurality of material leakage sleeves, and the second grid frame is fixedly provided with a plurality of material screening sleeves. Each material leakage sleeve is slidably sleeved inside each of the material leakage holes, and each material screening sleeve is slidably sleeved inside each of the material leakage sleeves. The first grid frame and the second grid frame are respectively provided with linear drive components, which are disposed inside the discharge chamber. The drying chamber is equipped with a switchable door and a drying mechanism. The drying mechanism includes an electric heating air box and a material turning assembly. The electric heating air box is fixedly installed on the top of the switchable door. The material turning assembly includes a strip plate and multiple rotating rollers. The strip plate extends forward and backward into the drying chamber. The multiple rotating rollers are evenly arranged on the lower side of the strip plate and are rotatably connected to the strip plate. Several blades are fixedly installed on the side of each rotating roller. Adjacent rotating rollers are connected by belt drive. A gear is fixedly installed on the last rotating roller. A straight rack matching the gear is machined on the rear inner wall of the drying chamber. A reciprocating drive mechanism is also provided between the strip plate and the drying chamber. A sliding positioning mechanism is provided between the rear end of the strip plate and the rear inner wall of the drying chamber. The discharge chamber includes a first guide plate and a first discharge port. The higher side of the first guide plate is fixed to the upper side of the discharge chamber, and the lower side of the first guide plate extends to the first discharge port. A blower unit is installed on one side of the outer wall of the discharge chamber. A waste discharge port is opened on the side of the discharge chamber opposite to the blower unit. A first rotating plate is elastically hinged to the lower side of the discharge chamber near the blower unit. A second rotating plate is movably hinged to the lower side of the discharge chamber near the waste discharge port. The end of the first rotating plate extends to the lower side of the second rotating plate. In the initial state, the first rotating plate is in a horizontal state under the elastic action, and the second rotating plate is pushed to a horizontal state by the first rotating plate. The discharge chamber is also provided with a discharge mechanism, which includes multiple first push rods and multiple second push rods. The multiple first push rods are all fixedly connected to the bottom of the first grid frame, and each of the first push rods slides through the second grid frame. The multiple second push rods are all fixedly connected to the bottom of the second grid frame. The first push rods and the second push rods are all corresponding to the first rotating plate. The first push rods are located on the side closer to the fan unit, and the second push rods are located on the side farther away from the fan unit. The discharge chamber is also provided with a second guide plate, which is located above the first guide plate. When the second grid frame moves downward, the second push rod pushes the far end of the first rotating plate to flip, and the second guide plate is exactly aligned with the position of the first rotating plate. The discharge chamber is also provided with a defective product discharge port that matches the lower side of the second guide plate. The discharge chamber is also provided with a limiting ring that matches the second rotating plate. A metal spring plate is also fixedly connected to the far end of the first rotating plate.

2. The polyester masterbatch pretreatment device according to claim 1, characterized in that: A plurality of positioning rods are fixedly provided on the lower side of the partition, which slide through the first grid frame and the second grid frame. The linear drive assembly includes an electric telescopic rod. The first grid frame is fixedly connected to the telescopic end of one of the electric telescopic rods, and the second grid frame is fixedly connected to the telescopic end of the other electric telescopic rod.

3. The polyester masterbatch pretreatment device according to claim 2, characterized in that: The reciprocating drive mechanism includes a motor, a mounting platform, and a screw. The motor is mounted on the outer wall of the drying chamber, the mounting platform is fixedly mounted on the upper end of the strip plate, the screw is threadedly rotatably connected to the mounting platform, the screw is located inside the drying chamber and extends to the left and right, and the motor and the screw are connected by transmission.

4. The polyester masterbatch pretreatment device according to claim 3, characterized in that: The sliding positioning mechanism includes a positioning slide rail and a positioning slider. The positioning slide rail is disposed on the inner wall of the rear side of the drying chamber, and the positioning slider is installed and fixed to the rear end of the strip plate and is slidably connected to the positioning slide rail.

5. The polyester masterbatch pretreatment device according to claim 4, characterized in that: The drying chamber is also provided with an exhaust vent on the side. The partition is hollow inside. The exhaust vent is connected to an air duct. The air duct is connected to one side of the partition. An air outlet is provided on the other side of the partition.

6. The polyester masterbatch pretreatment device according to claim 5, characterized in that: The air outlet is equipped with a dustproof screen.

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