A new type of vacuum kneader

Abstract

The utility model relates to a new vacuum kneader, adopt two stirring shafts cooperation detachable spiral stirring paddle and frame stirring paddle, two stirring shafts reverse rotation and the rotating speed can be independently adjusted, spiral stirring paddle can realize material axial delivery, frame stirring paddle realizes material radial stirring and sticks to the residual material cleaning in the inner wall of kneading cylinder, effectively improved material stirring uniformity, reduced material accumulation, simultaneously, detachable spiral stirring paddle and frame stirring paddle are convenient for later maintenance and replacement. The temperature control device cooperates through the jacket and hollow channel, combines high accuracy temperature sensor and automatic control, realizes all -round, high accuracy temperature control to material, guarantees the chemical reaction and physical performance stability of material. The vacuum device can maintain the vacuum degree in the kneading cylinder in the preset range, improves the kneading effect. The cleaning device adopts the rotary shower head cooperation high pressure water pump and metering pump, realizes the automatic cleaning, reduces the labor intensity, improves the cleaning efficiency and the cleaning quality, avoids the cross -contamination of different batches of materials.

Description

Technical Field

[0001] This utility model relates to the field of material mixing equipment technology, and more specifically, to a novel vacuum kneader. Background Technology

[0002] Vacuum kneaders are ideal equipment for mixing, kneading, crushing, dispersing, and repolymerizing high-viscosity, elastoplastic materials, and are widely used in many industrial fields.

[0003] Currently, existing vacuum kneaders have several shortcomings in practical use. First, most of their mixing systems use a single mixing shaft with a fixed mixing paddle, which results in poor mixing uniformity for high-viscosity materials. Material tends to accumulate on the inner wall of the kneading cylinder and at the base of the mixing shaft, affecting product quality and increasing the difficulty of subsequent cleaning. Second, existing equipment is mostly cleaned manually, which is labor-intensive.

[0004] Therefore, developing a new type of vacuum kneader with efficient mixing and easy cleaning functions has become an urgent problem to be solved by those skilled in the art. Utility Model Content

[0005] This invention provides a novel vacuum kneader, which aims to overcome the shortcomings of existing vacuum kneaders, such as uneven mixing and difficulty in cleaning.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a novel vacuum kneader, comprising a frame, a kneading cylinder mounted on the frame, a stirring device for stirring materials, a temperature control device for controlling the temperature inside the kneading cylinder, a vacuum device for maintaining the vacuum environment inside the kneading cylinder, a cleaning device for cleaning the kneading cylinder, and a control system for controlling the coordinated operation of the various devices, wherein the stirring device, the temperature control device, the vacuum device, and the cleaning device are all electrically connected to the control system;

[0007] The stirring device includes a drive motor mounted on the frame, two stirring shafts mounted inside the kneading cylinder, and detachable stirring components mounted on the two stirring shafts respectively. The stirring shafts are connected to the output end of the drive motor, and the two stirring shafts are parallel and rotate in opposite directions. The detachable stirring components include a spiral stirring paddle and a frame stirring paddle. The edge of the frame stirring paddle is in contact with the inner wall of the kneading cylinder. The drive motor is electrically connected to the control system.

[0008] The cleaning device includes a rotary spray head, a high-pressure water pump, and a cleaning agent storage tank. The rotary spray head is located on top of the kneading cylinder and is connected to the high-pressure water pump. The cleaning agent storage tank is connected to the high-pressure water pump through a pipe equipped with a metering pump. The rotary spray head, the high-pressure water pump, and the metering pump are all electrically connected to the control system.

[0009] Furthermore, the temperature control device includes a jacket disposed on the outer wall of the kneading cylinder, a hollow channel disposed inside the stirring shaft, and a temperature sensor disposed inside the kneading cylinder. The jacket is divided into a heating zone and a cooling zone, both of which are provided with a heat-conducting medium and a flow control valve. The heat-conducting medium is introduced into the hollow channel to work in conjunction with the jacket to achieve all-round temperature control of the material. The temperature sensor and the flow control valve are electrically connected to the control system. The temperature sensor is used to detect the material temperature in real time and can transmit the temperature signal to the control system. The control system can automatically adjust the flow control valves of the heating zone and the cooling zone according to a preset temperature range.

[0010] Furthermore, the vacuum device includes a vacuum pump, a vacuum buffer tank, a vacuum sensor, and a solenoid valve. The vacuum pump is connected to the vacuum buffer tank via a pipe, and the vacuum buffer tank is connected to the kneading cylinder via a pipe. The vacuum sensor is located inside the kneading cylinder and is used to detect the vacuum level inside the kneading cylinder in real time. The solenoid valve is located on the pipe, and the vacuum pump, the vacuum sensor, and the solenoid valve are all electrically connected to the control system.

[0011] Furthermore, the heat-conducting medium includes heat-conducting oil and coolant.

[0012] Furthermore, the inner wall of the kneading cylinder is provided with a wear-resistant coating.

[0013] Furthermore, the kneading cylinder has a feed inlet at the top and a discharge outlet at the bottom, with a discharge valve at the discharge outlet.

[0014] Furthermore, the frame-type stirring paddle is generally in the shape of a rectangular frame, and the spiral stirring paddle is located inside the frame-type stirring paddle.

[0015] Furthermore, the frame-type stirring paddle is connected to the stirring shaft by bolts.

[0016] Furthermore, the helical agitator includes a cylindrical bushing and a propeller blade. The propeller blade is fixedly connected to the outer wall of the bushing, and the bushing is fitted onto the agitator shaft. The bushing and the agitator shaft are fixed together by bolts.

[0017] Furthermore, one of the stirring shafts is connected to one of the drive motors.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model adopts two stirring shafts in conjunction with a detachable spiral stirring paddle and a frame stirring paddle. The two stirring shafts rotate in opposite directions and their speeds can be adjusted independently. The spiral stirring paddle can realize the axial conveying of materials, while the frame stirring paddle realizes the radial stirring of materials and adheres to the inner wall of the kneading cylinder to clean up residual materials, which effectively improves the uniformity of material mixing and reduces material accumulation. At the same time, the detachable spiral stirring paddle and frame stirring paddle facilitate later maintenance and replacement.

[0020] 2. The temperature control device, through the coordinated action of the jacket and hollow channel, combined with a high-precision temperature sensor and automatic control, achieves comprehensive and high-precision temperature control of the material, ensuring the stability of the material's chemical reaction and physical properties.

[0021] 3. The vacuum device is equipped with a vacuum pump, a vacuum buffer tank, a vacuum sensor, and a solenoid valve, which can maintain the vacuum level inside the kneading cylinder within a preset range and improve the kneading effect.

[0022] 4. The cleaning device uses a rotating spray head in conjunction with a high-pressure water pump and a metering pump to achieve automatic cleaning, reduce labor intensity, improve cleaning efficiency and quality, and avoid cross-contamination between different batches of materials. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained from these drawings without creative effort.

[0024] Figure 1 This is a structural schematic diagram of the present invention from a first angle;

[0025] Figure 2 This is a structural schematic diagram of the present invention from a second angle;

[0026] Figure 3 This is a structural schematic diagram of the present invention from a third angle;

[0027] Figure 4 This is a structural schematic diagram of the present invention from the fourth angle;

[0028] Figure 5 yes Figure 4 A magnified view of part A in the diagram.

[0029] Explanation of main component symbols

[0030] 100. Rack;

[0031] 200. Kneading cylinder; 201. Feed inlet; 202. Discharge outlet; 203. Discharge valve;

[0032] 300. Stirring device; 310. Stirring assembly; 311. Spiral impeller; 312. Frame-type impeller; 312a. Shaft sleeve; 312b. Stirring teeth; 301. Drive motor; 302. Stirring shaft;

[0033] 400. Temperature control device; 401. Temperature sensor;

[0034] 500. Vacuum device; 501. Vacuum pump; 502. Vacuum buffer tank; 503. Vacuum degree sensor;

[0035] 600. Cleaning device; 601. Rotary spray head; 602. Cleaning agent storage tank;

[0036] 700. Control system. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this utility model, not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model. Therefore, the following detailed description of the embodiments of this utility model provided in the accompanying drawings is not intended to limit the scope of the claimed utility model, but merely represents selected embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.

[0038] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0039] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0040] Example

[0041] like Figures 1-5 As shown, this utility model discloses a novel vacuum kneader, including a frame 100, a kneading cylinder 200 mounted on the frame 100, a stirring device 300 for stirring materials, a temperature control device 400 for controlling the temperature inside the kneading cylinder 200, a vacuum device 500 for maintaining the vacuum environment inside the kneading cylinder 200, a cleaning device 600 for cleaning the kneading cylinder 200, and a control system 700 for controlling the coordinated operation of each device. The stirring device 300, temperature control device 400, vacuum device 500, and cleaning device 600 are all electrically connected to the control system 700.

[0042] The kneading cylinder 200 has a wear-resistant coating on its inner wall. This coating prevents scratches, dents, and other wear marks from appearing on the inner wall of the kneading cylinder 200, prevents material from accumulating more easily due to uneven cylinder walls, and extends the service life of the kneading cylinder 200. The kneading cylinder 200 has a feed inlet 201 at the top, which is covered with a cylinder cover. The kneading cylinder 200 has a discharge outlet 202 at the bottom, which is equipped with a discharge valve 203. Material can enter the kneading cylinder 200 through the feed inlet 201, and the processed material can exit through the discharge outlet 202. The discharge valve 203 can control the closing of the discharge outlet 202.

[0043] The stirring device 300 includes two drive motors 301 mounted on the frame 100, two stirring shafts 302 mounted inside the kneading cylinder 200, and detachable stirring components 310 mounted on the two stirring shafts 302 respectively. One stirring shaft 302 is connected to the output end of one drive motor 301. The two stirring shafts 302 are parallel and rotate in opposite directions. The detachable stirring component 310 includes a spiral stirring paddle 311 and a frame stirring paddle 312. The edge of the frame stirring paddle 312 is in contact with the inner wall of the kneading cylinder 200. The drive motors 301 are electrically connected to the control system 700. Two stirring shafts 302 are used in conjunction with a detachable spiral stirring paddle 311 and a frame stirring paddle 312. The two stirring shafts 302 rotate in opposite directions and their speeds can be adjusted independently. The spiral stirring paddle 311 realizes axial conveying of materials, while the frame stirring paddle 312 realizes radial stirring of materials and adheres to the inner wall of the kneading cylinder 200 to clean residual materials, which effectively improves the uniformity of material mixing and reduces material accumulation. At the same time, the detachable spiral stirring paddle 311 and frame stirring paddle 312 facilitate later maintenance and replacement.

[0044] The frame-type agitator 312 has a rectangular frame structure. Along the transverse direction of the frame-type agitator 312, several small agitator teeth 312b are evenly arranged inside the transverse frame. These teeth are triangular or rectangular metal teeth with a height of 10-20mm. When the frame-type agitator 312 rotates, in addition to propelling the material radially (achieving radial mixing), the agitator teeth 312b also have a "cutting-dispersing" effect on the material. This is especially beneficial for high-viscosity materials, further improving mixing uniformity (in conjunction with the "axial conveying" of the spiral agitator 311). (forming a three-dimensional stirring of "radial + axial"); the length of the frame-type stirring paddle 312 is close to the length of the inner diameter of the kneading cylinder 200, which can cover the main distribution area of ​​the material in the kneading cylinder 200, and the spiral stirring paddle is located inside the frame-type stirring paddle 312; the frame-type stirring paddle 312 is connected to the stirring shaft 302 by bolts; the spiral stirring paddle 311 includes a cylindrical bushing 312a and a spiral blade, the spiral blade is fixedly connected to the outer wall of the bushing 312a, the bushing 312a is fitted on the stirring shaft 302, and the bushing 312a and the stirring shaft 302 are fixed by bolts.

[0045] The cleaning device 600 includes a rotary spray head 601, a high-pressure water pump, and a cleaning agent storage tank 602. The rotary spray head 601 is located on top of the kneading cylinder 200 and is mounted on the cylinder cover. The rotary spray head 601 is connected to the high-pressure water pump, and the cleaning agent storage tank 602 is connected to the high-pressure water pump via a pipe equipped with a metering pump. The rotary spray head 601, the high-pressure water pump, and the metering pump are all electrically connected to the control system 700. During cleaning, the rotary spray head 601 rotates 360 degrees to thoroughly clean the inner wall of the kneading cylinder 200, the two stirring shafts 302, the spiral stirring paddle 311, and the frame stirring paddle 312. After cleaning, there is no obvious material residue in the cylinder. The cleaning device 600 uses the rotary spray head 601 in conjunction with the high-pressure water pump and the metering pump to achieve automatic cleaning, which can reduce labor intensity, improve cleaning efficiency and cleaning quality, and avoid cross-contamination between different batches of materials.

[0046] The temperature control device 400 includes a jacket installed on the outer wall of the kneading cylinder 200, a hollow channel installed inside the stirring shaft 302, and a temperature sensor 401 installed inside the kneading cylinder 200. The jacket is divided into a heating zone and a cooling zone, both of which are equipped with a heat-conducting medium, including heat-conducting oil and coolant. Both the heating zone and the cooling zone are made of stainless steel. Both the heating zone and the cooling zone are equipped with flow control valves. The heat-conducting medium is introduced into the hollow channel to work with the jacket to achieve all-round temperature control of the material. The temperature sensor 401 and the flow control valves are electrically connected to the control system 700. The temperature sensor 401 is used to detect the material temperature in real time and can transmit the temperature signal to the control system 700. The control system 700 can automatically adjust the flow control valves of the heating zone and the cooling zone according to the preset temperature range. The hollow channel is equipped with a medium switching valve group. When heating is required, the heating zone and the hollow channel share a heat transfer oil circulation system. The PLC adjusts the flow control valve in the heating zone, opening the valve wider to increase the circulation flow of the heat transfer oil in the jacket heating zone and the hollow channel. The higher the flow rate, the more heat the heat transfer oil transfers. When cooling is required, the cooling zone and the hollow channel share a coolant circulation system. The PLC adjusts the flow control valve in the cooling zone, opening the valve wider to increase the circulation flow of the coolant in the jacket cooling zone and the hollow channel. The higher the flow rate, the more heat the coolant absorbs. Traditional vacuum kneaders rely solely on the temperature control of the outer jacket. High-viscosity materials have poor thermal conductivity, easily leading to the problem of "outer layer temperature reaching the standard, internal temperature lagging behind." In this invention, the heat transfer medium in the hollow channel can transfer or remove heat to the material through the stirring shaft 302. Combined with the "external temperature control" of the jacket, it achieves "all-round, no dead angle" temperature regulation of the material.

[0047] The vacuum device 500 includes a vacuum pump 501, a vacuum buffer tank 502, a vacuum sensor 503, and a solenoid valve. The vacuum pump 501 is connected to the vacuum buffer tank 502 via a pipe, and the vacuum buffer tank 502 is connected to the kneading cylinder 200 via a pipe. The vacuum sensor 503 is installed inside the kneading cylinder 200 and is used to detect the vacuum level inside the kneading cylinder 200 in real time. The solenoid valve is installed on the pipe. The vacuum pump 501, vacuum sensor 503, and solenoid valve are all electrically connected to the control system 700. The vacuum device 500 can maintain the vacuum level inside the cylinder within a preset range, thereby improving the kneading effect.

[0048] The vacuum buffer tank 502 is equipped with a filter assembly. The filter assembly uses a stainless steel filter screen and can effectively filter volatile substances from the material to prevent the vacuum pump 501 from becoming clogged.

[0049] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A novel vacuum kneader, characterized in that, The device includes a frame, a kneading cylinder mounted on the frame, a stirring device for stirring materials, a temperature control device for controlling the temperature inside the kneading cylinder, a vacuum device for maintaining a vacuum environment inside the kneading cylinder, a cleaning device for cleaning the kneading cylinder, and a control system for controlling the coordinated operation of the various devices. The stirring device, the temperature control device, the vacuum device, and the cleaning device are all electrically connected to the control system. The stirring device includes a drive motor mounted on the frame, two stirring shafts mounted inside the kneading cylinder, and detachable stirring components mounted on the two stirring shafts respectively. The stirring shafts are connected to the output end of the drive motor, and the two stirring shafts are parallel and rotate in opposite directions. The detachable stirring components include a spiral stirring paddle and a frame stirring paddle. The edge of the frame stirring paddle is in contact with the inner wall of the kneading cylinder. The drive motor is electrically connected to the control system. The cleaning device includes a rotary spray head, a high-pressure water pump, and a cleaning agent storage tank. The rotary spray head is located on top of the kneading cylinder and is connected to the high-pressure water pump. The cleaning agent storage tank is connected to the high-pressure water pump through a pipe equipped with a metering pump. The rotary spray head, the high-pressure water pump, and the metering pump are all electrically connected to the control system.

2. A novel vacuum kneader according to claim 1, characterized in that; The temperature control device includes a jacket disposed on the outer wall of the kneading cylinder, a hollow channel disposed inside the stirring shaft, and a temperature sensor disposed inside the kneading cylinder. The jacket is divided into a heating zone and a cooling zone, both of which are equipped with a heat-conducting medium and a flow control valve. The heat-conducting medium is introduced into the hollow channel to work in conjunction with the jacket to achieve all-round temperature control of the material. The temperature sensor and the flow control valve are electrically connected to the control system. The temperature sensor is used to detect the material temperature in real time and can transmit the temperature signal to the control system. The control system can automatically adjust the flow control valves of the heating zone and the cooling zone according to a preset temperature range.

3. A novel vacuum kneader according to claim 1, characterized in that; The vacuum device includes a vacuum pump, a vacuum buffer tank, a vacuum sensor, and a solenoid valve. The vacuum pump is connected to the vacuum buffer tank via a pipe, and the vacuum buffer tank is connected to the kneading cylinder via a pipe. The vacuum sensor is located inside the kneading cylinder and is used to detect the vacuum level inside the kneading cylinder in real time. The solenoid valve is located on the pipe, and the vacuum pump, the vacuum sensor, and the solenoid valve are all electrically connected to the control system.

4. A novel vacuum kneader according to claim 2, characterized in that; The heat-conducting medium includes heat-conducting oil and coolant.

5. A novel vacuum kneader according to claim 1, characterized in that; The inner wall of the kneading cylinder is coated with a wear-resistant coating.

6. A novel vacuum kneader according to claim 1, characterized in that: The kneading cylinder has a feed inlet at the top and a discharge outlet at the bottom, with a discharge valve at the discharge outlet.

7. A novel vacuum kneader according to claim 1, characterized in that: The frame-type stirring paddle has an overall rectangular frame, and the spiral stirring paddle is located inside the frame-type stirring paddle.

8. A novel vacuum kneader according to claim 1, characterized in that: The frame-type stirring paddle is connected to the stirring shaft by bolts.

9. A novel vacuum kneader according to claim 1, characterized in that; The spiral agitator includes a cylindrical bushing and a propeller blade. The propeller blade is fixedly connected to the outer wall of the bushing. The bushing is fitted onto the agitator shaft, and the bushing and the agitator shaft are fixed together by bolts.

10. A novel vacuum kneader according to claim 1, characterized in that... The stirring shaft is connected to the drive motor.

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