Kneading machine for polyvinyl chloride material production

Abstract

The utility model relates to the technical field of polyvinyl chloride production, in particular to a kneading machine for polyvinyl chloride material production, which comprises a kneading frame, a kneading cylinder and a rotating mechanism, and the kneading cylinder is provided with stirring teeth, a feeding door, a stirring mechanism and a discharging mechanism; the kneading cylinder is arranged in the kneading frame, and the stirring teeth are arranged on the inner wall of the kneading cylinder; a supporting seat and two rotating rings are arranged on the kneading frame, and the two rotating rings are oppositely arranged at the two ends of the kneading frame; the rotating mechanism comprises a first servo motor, a first synchronous wheel, a second synchronous wheel and a synchronous belt, the first servo motor is arranged on the side wall of the kneading frame, the first synchronous wheel is arranged at the output end of the first servo motor, the second synchronous wheel is arranged at one end of the kneading barrel, and the synchronous belt is used for being matched with the first synchronous wheel and the second synchronous wheel. The problem that polyvinyl chloride materials are accumulated at the bottom of the kneading cylinder in the processing process is solved through the stirring teeth.

Description

Technical Field

[0001] This utility model relates to the field of polyvinyl chloride production technology, specifically to a kneader for the production of polyvinyl chloride materials. Background Technology

[0002] A kneader is a specialized mixing and stirring device, ideal for kneading, mixing, vulcanizing, and polymerizing high-viscosity, elasto-plastic materials. Existing kneaders typically consist of a kneading shell with a mixing chamber, and a stirring assembly within the mixing chamber. This assembly includes two parallel stirring paddles, one with a faster stirring speed and the other with a slower speed. In existing kneaders, the discharge mechanism is located on the side wall of the mixing shell, causing material at the bottom of the mixing chamber to easily accumulate and be difficult to discharge. This results in old material tending to accumulate at the bottom of the mixing chamber.

[0003] Chinese patent CN207841805U discloses a plastic kneading machine, including a kneading shell with a mixing chamber and a mixing assembly disposed in the mixing chamber. The bottom of the kneading shell is also provided with a discharge mechanism for discharging material. The discharge mechanism includes a discharge pipe fixed to the bottom of the kneading shell, a sliding plate for controlling the opening and closing of the discharge pipe, and a driving cylinder for driving the sliding plate to slide. The discharge pipe is connected to the mixing chamber through a discharge port. The kneading shell is provided with a sliding square groove on one side of the discharge port. The side wall of the sliding square groove facing the discharge port is provided with a sliding insertion hole for the sliding plate to be inserted into the mixing chamber so as to control the opening and closing of the discharge port after the sliding plate is inserted.

[0004] However, during the processing of the above structure, the polyvinyl chloride material tends to accumulate at the bottom of the mixing chamber, and the mixing components cannot fully process the material. Utility Model Content

[0005] To address the aforementioned issues, a kneader for the production of polyvinyl chloride (PVC) materials is provided, which solves the problem of PVC materials accumulating at the bottom of the kneading cylinder during processing by using stirring teeth.

[0006] To address the problems of existing technologies, this utility model provides a kneading machine for the production of polyvinyl chloride (PVC) materials, including a kneading frame, a kneading cylinder, and a rotating mechanism. The kneading cylinder is equipped with stirring teeth, a feed gate, a stirring mechanism, and a discharge mechanism. The kneading cylinder is disposed within the kneading frame. There is at least one stirring tooth, which is located on the inner wall of the kneading cylinder. The stirring mechanism is located inside the kneading cylinder and is used to stir and process the PVC material fed into the kneading cylinder. The discharge mechanism is located at the bottom of the kneading cylinder and is used to discharge the processed PVC material. The feed gate... A feed gate is located at one end of the kneading cylinder to feed polyvinyl chloride (PVC) material into the kneading cylinder. The kneading frame is equipped with support seats and rotating rings. Two rotating rings are positioned opposite each other at both ends of the kneading frame, and two support seats are positioned opposite each other at the bottom edge of the kneading frame. The rotating mechanism includes a first servo motor, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The first servo motor is located on the side wall of the kneading frame, the first synchronous pulley is located at the output end of the first servo motor, the second synchronous pulley is located at one end of the kneading cylinder, and the synchronous belt is used to engage with the first and second synchronous pulleys.

[0007] Preferably, the stirring mechanism includes a second servo motor, a first stirring shaft, a second stirring shaft, and a transmission mechanism; the first stirring shaft is provided with a first stirring blade, the second stirring shaft is provided with a second stirring blade, and the first stirring shaft and the second stirring shaft are arranged opposite to each other inside the kneading cylinder; the transmission mechanism is located at one end of the kneading cylinder away from the feed gate, the second servo motor is located on the transmission mechanism, and the second servo motor drives the first stirring shaft and the second stirring shaft to rotate through the transmission mechanism.

[0008] Preferably, the transmission mechanism includes a high-speed gear, a transmission gear, a low-speed gear, and a protective shell; the high-speed gear is disposed on the first stirring shaft, the low-speed gear is disposed on the second stirring shaft, the transmission gear is disposed between the high-speed gear and the low-speed gear and meshes with the high-speed gear and the low-speed gear for transmission, the protective shell is detachably disposed on the end of the kneading cylinder away from the feed gate, and the protective shell surrounds the high-speed gear, the transmission gear, and the low-speed gear; the second servo motor is disposed on the outer wall of the protective shell, and the motor shaft of the second servo motor passes through the protective shell and is fixedly connected to the transmission gear.

[0009] Preferably, the discharge mechanism includes a discharge port, an electric push rod, an upper baffle plate, a lower baffle plate, a limiting slider, a first connecting block, and a second connecting block. The discharge port is located at the bottom of the meshing cylinder and extends through the bottom of the meshing cylinder. The first connecting block is located between the upper baffle plate and the lower baffle plate. There are two limiting sliders, which are arranged opposite each other on the side wall of the discharge port. The limiting sliders extend along the length direction of the kneading cylinder. The upper baffle plate and the lower baffle plate surround the limiting sliders. The upper baffle plate and the limiting sliders are in sliding engagement. The lower baffle plate and the limiting sliders are in sliding engagement. The second connecting block is located at the bottom of the lower baffle plate. The electric push rod is located at the bottom of the kneading cylinder, and the output end of the electric push rod is fixedly connected to the second connecting block.

[0010] Preferably, the discharge mechanism is further provided with a chute baffle and a limiting baffle; there are two chute baffles arranged opposite each other at both ends of the discharge port, the chute baffles and the inner wall of the kneading cylinder surround to form an upper chute, the chute baffles and the outer wall of the kneading cylinder surround to form a lower chute, the upper chute slides with the upper baffle plate, and the lower chute slides with the lower baffle plate; there are four limiting baffles arranged in pairs opposite each other at both ends of the upper chute and the lower chute, the limiting baffles are used to limit the sliding range of the upper baffle plate and the lower baffle plate.

[0011] Preferably, a collection hopper is also provided; the collection hopper is located at the bottom of the kneading frame, and a through hole is provided on the kneading frame corresponding to the position of the collection hopper. The collection hopper is provided with a mounting flange, and the collection hopper and the kneading frame are detachably installed.

[0012] The advantages of this utility model compared to the prior art are:

[0013] 1. This utility model avoids the accumulation of polyvinyl chloride (PVC) material at the bottom of the kneading cylinder during processing by using stirring teeth, thus preventing the stirring mechanism from fully mixing and processing the PVC material and improving the mixing and processing effect of the device on PVC material.

[0014] 2. This utility model realizes the differential rotation of the first stirring shaft and the second stirring shaft through the transmission mechanism, and protects the gear through the protective shell. At the same time, the protective shell and the kneading cylinder can be detachably installed, which facilitates the maintenance and repair of the gear by the staff.

[0015] 3. This utility model improves the sealing of the kneading cylinder during the processing by using the upper baffle plate and the lower baffle plate, thus preventing polyvinyl chloride material from falling out of the outlet. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of a kneader used in the production of polyvinyl chloride materials.

[0017] Figure 2 This is a three-dimensional structural diagram of a kneader used in the production of polyvinyl chloride materials.

[0018] Figure 3 This is a cross-sectional view of the kneading cylinder, the first stirring shaft, and the second stirring shaft of a kneader used in the production of polyvinyl chloride materials.

[0019] Figure 4 This is an exploded schematic diagram of the transmission mechanism of the kneading cylinder of a kneader used in the production of polyvinyl chloride materials.

[0020] Figure 5 This is a three-dimensional structural diagram of the kneading cylinder of a kneader used in the production of polyvinyl chloride materials.

[0021] Figure 6 It is a kneading machine used in the production of polyvinyl chloride materials. Figure 5 A partial schematic diagram of point A.

[0022] The diagram is labeled as follows: 1-Kneading frame; 11-Support base; 12-Rotating ring; 2-Kneading cylinder; 21-Agitating teeth; 22-Feed gate; 23-Agitating mechanism; 231-Second servo motor; 232-First agitating shaft; 2321-First agitating blade; 233-Second agitating shaft; 2331-Second agitating blade; 234-Transmission mechanism; 2341-High-speed gear; 2342-Transmission gear; 2343-Low-speed gear; 2344-Protective shell; 24- Discharge mechanism; 241-Discharge port; 242-Electric push rod; 243-Upper baffle plate; 244-Lower baffle plate; 245-Limit slider; 246-First connecting block; 247-Second connecting block; 248-Slide chute baffle; 2481-Upper slide chute; 2482-Lower slide chute; 249-Limit baffle plate; 3-Rotating mechanism; 31-First servo motor; 32-First synchronous pulley; 33-Second synchronous pulley; 34-Synchronous belt; 4-Collection hopper; 41-Mounting flange. Detailed Implementation

[0023] To further understand the features, technical means, and specific objectives and functions achieved by this utility model, the following detailed description of this utility model is provided in conjunction with the accompanying drawings and specific embodiments.

[0024] Reference Figures 1-5A kneading machine for producing polyvinyl chloride (PVC) material includes a kneading frame 1, a kneading cylinder 2, and a rotating mechanism 3. The kneading cylinder 2 is equipped with stirring teeth 21, a feed gate 22, a stirring mechanism 23, and a discharge mechanism 24. The kneading cylinder 2 is located inside the kneading frame 1. There is at least one stirring tooth 21, and the stirring tooth 21 is located on the inner wall of the kneading cylinder 2. The stirring mechanism 23 is located inside the kneading cylinder 2 and is used to stir and process the PVC material fed into the kneading cylinder 2. The discharge mechanism 24 is located at the bottom of the kneading cylinder 2 and is used to discharge the processed PVC material. The feed gate 22 is located at one end of the kneading cylinder 2. The material gate 22 is used to feed polyvinyl chloride material into the kneading cylinder 2; the kneading frame 1 is provided with a support base 11 and a rotating ring 12. There are two rotating rings 12, which are arranged opposite to each other at both ends of the kneading frame 1. There are two support bases 11, which are arranged opposite to each other at the bottom edge of the kneading frame 1; the rotating mechanism 3 includes a first servo motor 31, a first synchronous pulley 32, a second synchronous pulley 33, and a synchronous belt 34. The first servo motor 31 is arranged on the side wall of the kneading frame 1. The first synchronous pulley 32 is arranged at the output end of the first servo motor 31. The second synchronous pulley 33 is arranged at one end of the kneading cylinder 2. The synchronous belt 34 is used to cooperate with the first synchronous pulley 32 and the second synchronous pulley 33.

[0025] The kneading cylinder 2 is a horizontally extending cylinder used to feed and mix polyvinyl chloride (PVC) material. Multiple mixing teeth 21 are evenly distributed on the inner wall of the kneading cylinder 2. A mixing mechanism 23 is located inside the kneading cylinder 2. A discharge mechanism 24 is located at the bottom of the kneading cylinder 2. A feed gate 22 is located at one end of the kneading cylinder 2 to feed PVC material into it. Two rotating rings 12 are positioned opposite each other at both ends of the kneading frame 1. The inner wall of the rotating rings 12 abuts against the outer wall of the kneading cylinder 2, and the rotating rings 12 are rotatably connected to the kneading cylinder 2. Two support seats 11 are positioned opposite each other at the bottom of the kneading frame 1 to support the device. Reinforcing ribs are provided on the support seats 11 to improve the stability of the device. A first servo motor 31 is located on the side wall of the kneading frame 1, with its axis collinear with the axis of the kneading cylinder 2. The motor shaft is positioned towards the edge of the kneading frame 1 near the feed gate 22. A first synchronous pulley 32 is fixedly connected to the motor shaft and performs a first synchronous... The first synchronous wheel 32 is collinear with the axis of the motor shaft. The second synchronous wheel 33 is fixedly connected to one end of the kneading cylinder 2 near the feed gate 22, and the second synchronous wheel 33 is parallel to the axis of the kneading cylinder 2. The synchronous belt 34 is used to cooperate with the first synchronous wheel 32 and the second synchronous wheel 33. When the device is processing, the polyvinyl chloride material is added into the kneading cylinder 2 through the feed gate 22. The stirring mechanism 23 is started to stir and process the polyvinyl chloride material. However, the polyvinyl chloride material tends to accumulate at the bottom of the kneading cylinder 2, and the stirring mechanism 23 cannot fully stir and process the polyvinyl chloride material. The first servo motor 31 is started, and the motor shaft rotates and drives the kneading cylinder 2 to rotate along the inner wall of the rotating ring 12 through the first synchronous wheel 32, the second synchronous wheel 33 and the synchronous belt 34. The polyvinyl chloride material in the kneading cylinder 2 is driven by the stirring teeth 21 and falls onto the stirring mechanism 23 under the action of gravity. The stirring teeth 21 prevent the polyvinyl chloride material from accumulating at the bottom of the kneading cylinder 2 during processing, which would prevent the polyvinyl chloride material from being fully processed.

[0026] Reference Figures 1-4 The stirring mechanism 23 includes a second servo motor 231, a first stirring shaft 232, a second stirring shaft 233, and a transmission mechanism 234. The first stirring shaft 232 is provided with a first stirring blade 2321, and the second stirring shaft 233 is provided with a second stirring blade 2331. The first stirring shaft 232 and the second stirring shaft 233 are arranged opposite to each other inside the kneading cylinder 2. The transmission mechanism 234 is located at one end of the kneading cylinder 2 away from the feed gate 22. The second servo motor 231 is located on the transmission mechanism 234, and the second servo motor 231 drives the first stirring shaft 232 and the second stirring shaft 233 to rotate through the transmission mechanism 234.

[0027] The first stirring shaft 232 and the second stirring shaft 233 are arranged opposite each other inside the kneading cylinder 2. The axes of the first stirring shaft 232 and the second stirring shaft 233 are parallel to the axis of the kneading cylinder. The first stirring shaft 232 is provided with a first stirring blade 2321, and the second stirring shaft 233 is provided with a second stirring blade 2331. The first stirring blade 2321 and the second stirring blade 2331 are used to stir and process the polyvinyl chloride material in the kneading cylinder 2. The transmission mechanism 234 is located at one end of the kneading cylinder 2 away from the feed gate 22. The transmission mechanism 234 is connected to the first stirring shaft 232 and the second stirring shaft 233 respectively. The first servo motor 31 is located on the transmission mechanism 234, and the motor shaft is connected to the transmission mechanism 234 to drive the first stirring shaft 232 and the second stirring shaft 233 to rotate at different speeds.

[0028] Reference Figure 2 and Figure 4 The transmission mechanism 234 includes a high-speed gear 2341, a transmission gear 2342, a low-speed gear 2343, and a protective shell 2344. The high-speed gear 2341 is mounted on the first stirring shaft 232, the low-speed gear 2343 is mounted on the second stirring shaft 233, the transmission gear 2342 is positioned between the high-speed gear 2341 and the low-speed gear 2343, and the transmission gear 2342 meshes with both the high-speed gear 2341 and the low-speed gear 2343. The protective shell 2344 is detachably mounted on the kneading cylinder 2 at one end away from the feed gate 22, and surrounds the high-speed gear 2341, the transmission gear 2342, and the low-speed gear 2343. A second servo motor 231 is mounted on the outer wall of the protective shell 2344, and the motor shaft of the second servo motor 231 passes through the protective shell 2344 and is fixedly connected to the transmission gear 2342.

[0029] High-speed gear 2341 is fixedly connected to the end of the first stirring shaft 232 away from the feed gate 22, and the axis of high-speed gear 2341 is collinear with the axis of the first stirring shaft 232. Low-speed gear 2343 is fixedly connected to the end of the second stirring shaft 233 away from the feed gate 22, and the axis of low-speed gear 2343 is collinear with the axis of the second stirring shaft 233. The diameter of low-speed gear 2343 is larger than the diameter of high-speed gear 2341. Transmission gear 2342 is disposed between high-speed gear 2341 and low-speed gear 2343, and the transmission gear 2342 meshes with both high-speed gear 2341 and low-speed gear 2343. Protective shell 2344 is disposed on the end of the meshing cylinder away from the feed gate 22, and the protective shell 2344 is provided with a flange edge for detachable installation. 2344 surrounds the high-speed gear 2341, the transmission gear 2342, and the low-speed gear 2343. The protective shell 2344 is used to prevent dust and other particles from entering between the gears and affecting their normal operation. The protective shell 2344 is detachable and easy for staff to maintain the gears. The second servo motor 231 is fixedly connected to the outer wall of the protective shell 2344. The motor shaft of the second servo motor 231 passes through the protective shell 2344 and is fixedly connected to the transmission gear 2342. The second servo motor 231 drives the transmission gear 2342 to rotate, which in turn drives the high-speed gear 2341 and the low-speed gear 2343 to rotate. The high-speed gear 2341 and the low-speed gear 2343 have different diameters, which enables differential rotation of the first stirring shaft 232 and the second stirring shaft 233.

[0030] Reference Figures 4-6 The discharge mechanism 24 includes a discharge port 241, an electric push rod 242, an upper baffle plate 243, a lower baffle plate 244, a limiting slider 245, a first connecting block 246, and a second connecting block 247. The discharge port 241 is located at the bottom of the meshing cylinder and extends through the bottom of the meshing cylinder. The first connecting block 246 is located between the upper baffle plate 243 and the lower baffle plate 244. Two limiting sliders 245 are arranged opposite each other at the discharge port 241. The side wall has a limiting slider 245 extending along the length of the kneading cylinder 2. The upper baffle plate 243 and the lower baffle plate 244 surround the limiting slider 245. The upper baffle plate 243 and the limiting slider 245 are in sliding engagement, and the lower baffle plate 244 and the limiting slider 245 are in sliding engagement. The second connecting block 247 is located at the bottom of the lower baffle plate 244. The electric push rod 242 is located at the bottom of the kneading cylinder 2. The output end of the electric push rod 242 is fixedly connected to the second connecting block 247.

[0031] The discharge port 241 is located at the bottom edge of the kneading cylinder 2. The upper baffle plate 243 and the lower baffle plate 244 are arc-shaped extending along the length of the kneading cylinder 2. The bottom of the upper baffle plate 243 abuts against the inner wall of the kneading cylinder 2, and the top of the lower baffle plate 244 abuts against the outer wall of the kneading cylinder 2. The first connecting block 246 is located between the upper baffle plate 243 and the lower baffle plate 244 near the edge. The top of the first connecting block 246 is fixedly connected to the bottom of the upper baffle plate 243, and the bottom of the first connecting block 246 is fixedly connected to the top of the lower baffle plate 244. The limiting slider 245... Two limit sliders 245 are arranged opposite each other on the side wall of the discharge port 241. The limit sliders 245 extend along the length of the kneading cylinder 2. The bottom of the upper baffle plate 243 is slidably engaged with the limit slider 245, and the top of the lower baffle plate 244 is slidably engaged with the limit slider 245. The second connecting block 247 is arranged at the bottom of the lower baffle plate 244. The electric push rod 242 is arranged at the bottom of the kneading cylinder 2. The output end of the electric push rod 242 is fixedly connected to the second connecting block 247. The electric push rod 242 is used to drive the upper baffle plate 243 and the lower baffle plate 244 to block or disengage from the discharge port 241.

[0032] Reference Figures 4-6 The discharge mechanism 24 is also provided with a chute baffle 248 and a limiting baffle 249; there are two chute baffles 248 and they are arranged opposite each other at both ends of the discharge port 241. The chute baffles 248 and the inner wall of the kneading cylinder 2 surround to form an upper chute 2481, and the chute baffles 248 and the outer wall of the kneading cylinder 2 surround to form a lower chute 2482. The upper chute 2481 is slidably engaged with the upper baffle plate 243, and the lower chute 2482 is slidably engaged with the lower baffle plate 244; there are four limiting baffles 249 and they are arranged opposite each other at both ends of the upper chute 2481 and the lower chute 2482. The limiting baffles 249 are used to limit the sliding range of the upper baffle plate 243 and the lower baffle plate 244.

[0033] Two chute baffles 248 are arranged opposite each other at both ends of the discharge port 241. The chute baffles 248 extend along the length of the kneading cylinder 2. The chute baffles 248 and the inner wall of the kneading cylinder 2 surround each other to form an upper chute 2481, and the chute baffles 248 and the outer wall of the kneading cylinder 2 surround each other to form a lower chute 2482. The upper chute 2481 and the lower chute 2482 extend along the length of the kneading cylinder 2. The upper chute 2481 is slidably engaged with the upper baffle plate 243, and the lower chute 2482 is slidably engaged with the lower baffle plate 244. Four limiting baffles 249 are arranged opposite each other at both ends of the upper chute 2481 and the lower chute 2482. When the device processes polyvinyl chloride material, the electric push rod 242 drives the upper baffle plate 243 and the lower baffle plate 244 to move toward the edge of the kneading cylinder 2 until the upper baffle plate... The upper baffle plate 243 and the lower baffle plate 244 abut against the limiting baffle plate 249 at the edge of the kneading cylinder 2. The upper baffle plate 243 and the lower baffle plate 244 completely block the discharge port 241 to prevent the polyvinyl chloride material from falling out of the discharge port 241. When the mixing and processing of the polyvinyl chloride material is finished, the electric push rod 242 drives the upper baffle plate 243 and the lower baffle plate 244 to move away from the edge of the kneading cylinder 2 until the upper baffle plate 243 and the lower baffle plate 244 abut against the limiting baffle plate 249 in the middle part of the kneading cylinder 2. The upper baffle plate 243 and the lower baffle plate 244 disengage from the discharge port 241, and the discharge port 241 is no longer blocked. The processed polyvinyl chloride material is discharged from the discharge port 241. The stability of the upper baffle plate 243 and the lower baffle plate 244 during the sliding process is improved by the upper sliding groove 2481 and the lower sliding groove 2482.

[0034] Reference Figure 1 It is also equipped with a collection hopper 4; the collection hopper 4 is located at the bottom of the kneading frame 1, and a through hole is opened on the kneading frame 1 corresponding to the position of the collection hopper 4. The collection hopper 4 is equipped with a mounting flange 41, and the collection hopper 4 and the kneading frame 1 can be detachably installed.

[0035] The collecting hopper 4 is equipped with a mounting flange 41. The collecting hopper 4 is detachably installed at the bottom of the kneading frame 1 via the mounting flange 41. The kneading frame 1 has a through hole corresponding to the position of the collecting hopper 4. By placing a container for polyvinyl chloride material under the collecting hopper 4, it is convenient to collect the material after the device discharges.

[0036] The above embodiments only illustrate one or more implementations of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A kneading machine for the production of polyvinyl chloride materials, comprising a kneading frame (1), a kneading cylinder (2), and a rotating mechanism (3), characterized in that, The kneading cylinder (2) is equipped with stirring teeth (21), a feeding gate (22), a stirring mechanism (23) and a discharging mechanism (24); The kneading cylinder (2) is set inside the kneading frame (1). There is at least one stirring tooth (21), and the stirring tooth (21) is set on the inner wall of the kneading cylinder (2). The stirring mechanism (23) is set inside the kneading cylinder (2). The stirring mechanism (23) is used to stir and process the polyvinyl chloride material put into the kneading cylinder (2). The discharge mechanism (24) is set at the bottom of the kneading cylinder (2). The discharge mechanism (24) is used to discharge the processed polyvinyl chloride material. The feed gate (22) is set at one end of the kneading cylinder (2). The feed gate (22) is used to put the polyvinyl chloride material into the kneading cylinder (2). The kneading frame (1) is provided with a support base (11) and a rotating ring (12). There are two rotating rings (12) and they are arranged opposite to each other at both ends of the kneading frame (1). There are two support bases (11) and they are arranged opposite to each other at the bottom edge of the kneading frame (1). The rotating mechanism (3) includes a first servo motor (31), a first synchronous pulley (32), a second synchronous pulley (33), and a synchronous belt (34). The first servo motor (31) is mounted on the side wall of the kneading frame (1), the first synchronous pulley (32) is mounted on the output end of the first servo motor (31), the second synchronous pulley (33) is mounted on one end of the kneading cylinder (2), and the synchronous belt (34) is used to cooperate with the first synchronous pulley (32) and the second synchronous pulley (33).

2. The kneader for producing polyvinyl chloride materials according to claim 1, characterized in that, The stirring mechanism (23) includes a second servo motor (231), a first stirring shaft (232), a second stirring shaft (233), and a transmission mechanism (234); The first stirring shaft (232) is provided with a first stirring blade (2321), and the second stirring shaft (233) is provided with a second stirring blade (2331). The first stirring shaft (232) and the second stirring shaft (233) are arranged opposite to each other inside the kneading cylinder (2). The transmission mechanism (234) is located on the kneading cylinder (2) at one end away from the feed gate (22). The second servo motor (231) is located on the transmission mechanism (234). The second servo motor (231) drives the first stirring shaft (232) and the second stirring shaft (233) to rotate through the transmission mechanism (234).

3. A kneader for the production of polyvinyl chloride materials according to claim 2, characterized in that, The transmission mechanism (234) includes a high-speed gear (2341), a transmission gear (2342), a low-speed gear (2343), and a protective shell (2344); A high-speed gear (2341) is mounted on the first stirring shaft (232), a low-speed gear (2343) is mounted on the second stirring shaft (233), a transmission gear (2342) is mounted between the high-speed gear (2341) and the low-speed gear (2343), and the transmission gear (2342) meshes with the high-speed gear (2341) and the low-speed gear (2343) for transmission. A protective shell (2344) is detachably mounted on the kneading cylinder (2) at one end away from the feed gate (22), and the protective shell (2344) surrounds the high-speed gear (2341), the transmission gear (2342) and the low-speed gear (2343). The second servo motor (231) is installed on the outer wall of the protective shell (2344). The motor shaft of the second servo motor (231) passes through the protective shell (2344) and is fixedly connected to the transmission gear (2342).

4. A kneader for the production of polyvinyl chloride materials according to claim 1, characterized in that, The discharge mechanism (24) includes a discharge port (241), an electric push rod (242), an upper baffle plate (243), a lower baffle plate (244), a limiting slider (245), a first connecting block (246), and a second connecting block (247); The discharge port (241) is located at the bottom of the meshing cylinder and extends through the bottom of the meshing cylinder. The first connecting block (246) is located between the upper baffle plate (243) and the lower baffle plate (244). There are two limiting sliders (245) and they are arranged opposite to each other on the side wall of the discharge port (241). The limiting sliders (245) extend along the length of the kneading cylinder (2). The upper baffle plate (243) and the lower baffle plate (244) surround the limiting sliders (245). The upper baffle plate (243) slides with the limiting sliders (245), and the lower baffle plate (244) slides with the limiting sliders (245). The second connecting block (247) is located at the bottom of the lower baffle plate (244), and the electric push rod (242) is located at the bottom of the kneading cylinder (2). The output end of the electric push rod (242) is fixedly connected to the second connecting block (247).

5. A kneader for the production of polyvinyl chloride materials according to claim 4, characterized in that, The discharge mechanism (24) is also equipped with a chute baffle (248) and a limiting baffle (249); Two chute baffles (248) are arranged opposite to each other at both ends of the discharge port (241). The chute baffles (248) and the inner wall of the kneading cylinder (2) form an upper chute (2481), and the chute baffles (248) and the outer wall of the kneading cylinder (2) form a lower chute (2482). The upper chute (2481) is slidably engaged with the upper baffle plate (243), and the lower chute (2482) is slidably engaged with the lower baffle plate (244). The limiting baffles (249) are four in number and arranged in pairs opposite to each other at both ends of the upper slide groove (2481) and the lower slide groove (2482). The limiting baffles (249) are used to limit the sliding range of the upper baffle (243) and the lower baffle (244).

6. A kneader for the production of polyvinyl chloride materials according to claim 1, characterized in that, It is also equipped with a material collection hopper (4); The collecting hopper (4) is located at the bottom of the kneading frame (1). A through hole is provided on the kneading frame (1) at the position corresponding to the collecting hopper (4). The collecting hopper (4) is provided with a mounting flange (41). The collecting hopper (4) and the kneading frame (1) are detachably installed.

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