Vacuum conveying cooling structure

Abstract

The utility model provides a vacuum conveying and cooling structure which comprises a barrel and a conveying screw arranged in the barrel. An opening is formed in the cylinder body, a cover body is detachably arranged on the opening, a first water passing cavity is formed in the cylinder body, and the first water passing cavity is communicated with the first water inlet and the first water outlet; the conveying screw rod is connected with a driving motor, the driving motor drives the conveying screw rod to rotate, a second water passing cavity, a second water inlet and a second water outlet are formed in the conveying screw rod, the second water inlet and the second water outlet are both communicated with the second water passing cavity, and the outer layer surface of the second water passing cavity is a plastic contact layer of the conveying screw rod. And conveying blades are arranged on the conveying screw rod.

Description

Technical Field

[0001] This utility model relates to a vacuum conveying and cooling structure. Background Technology

[0002] In the PVC granulation process, rapid cooling of the granules is crucial for ensuring product quality, preventing adhesion, and facilitating subsequent processing. Traditional cooling conveying devices often suffer from low cooling efficiency, complex maintenance, high noise levels, high energy consumption, and environmental pollution. Therefore, developing a PVC granulation cooling conveying device that integrates high-efficiency cooling, easy maintenance, low noise, energy saving, and environmental protection is of paramount importance.

[0003] In existing conveying screws, during low-volume conveying, material settles at the bottom of the screw barrel and is propelled forward by the rotating blades driven by the motor. This results in a small contact area with the screw's outer surface and low cooling efficiency. During high-volume conveying (80%-90%), the material fills the screw barrel, significantly increasing friction between the material and the screw blades. This causes the particles settled at the bottom to rub against the blades, resulting in powdery, substandard products. Furthermore, high-volume conveying also easily leads to particle adhesion problems. Utility Model Content

[0004] This utility model proposes a vacuum conveying and cooling structure, including a cylinder and a conveying screw disposed inside the cylinder;

[0005] The cylinder is provided with an opening, and a cover is detachably provided on the opening. The cylinder is provided with a first water passage cavity, which is connected to a first water inlet and a first water outlet.

[0006] The conveying screw is connected to the drive motor, and the drive motor drives the conveying screw to rotate. The conveying screw is provided with a second water passage cavity, a second water inlet, and a second water outlet. The second water inlet and the second water outlet are both connected to the second water passage cavity. The outer surface of the second water passage cavity is the plastic contact layer of the conveying screw. The conveying screw is provided with conveying blades.

[0007] In one or more embodiments, the conveying screw is provided with an input end shank and a tail end shank, the conveying screw is located between the input end shank and the tail end shank, the second water inlet is located at the front end section of the input end shank, and the second water outlet is located at the rear end section of the tail end shank.

[0008] In one or more embodiments, the input end handle is provided with a power section, the power section is connected to a drive motor, and the power section is located between the front end section and the conveying blade.

[0009] In one or more embodiments, the main body of the conveying screw is provided with a tail end, and a reverse blade opposite to the direction of the conveying blade is provided on the tail end, and a gap is provided between the reverse blade and the conveying blade.

[0010] In one or more embodiments, the cylinder is provided with a discharge port, the position of which corresponds to the position of the interval portion of the conveying screw.

[0011] In one or more embodiments, the conveying screw is further provided with a baffle plate, the baffle plate connecting two adjacent conveying blades, and the height of the baffle plate being less than the height of the conveying blades.

[0012] In one or more embodiments, the material-blocking and tilting plate is provided with an upper material-blocking and tilting plate and a lower material-blocking and tilting plate.

[0013] In one or more embodiments, the cover is provided with a connecting lug, and the cylinder is provided with a manual lock that cooperates with the connecting lug.

[0014] In one or more embodiments, the manual lock is provided with a locking ring, which can be hung on the connecting lug and lock the cover; or the locking ring leaves the connecting lug and opens the cover.

[0015] The beneficial effects of this utility model are:

[0016] High-efficiency cooling system: Utilizing an optimized conveying screw with a second water passage chamber and a cylinder with a first water passage chamber, a dual cooling design with internal and external cooling is formed. This ensures that the PVC granules are in full contact with the cooling medium during conveying, achieving efficient heat exchange. By adjusting the water flow rate and temperature, a rapid and uniform cooling effect is achieved.

[0017] Easy-to-maintain open structure: The cylinder adopts a U-shaped open design, which facilitates daily maintenance and cleaning. The screw speed is set at 8-16 rpm. The low speed design reduces wear between particles and blades, further extending the service life of the equipment and achieving virtually maintenance-free operation. At the same time, it also reduces the defect rate of finished products caused by powdery substances generated by friction.

[0018] Environmentally friendly and low-noise design: The device adopts a quick-release sealing cover design, ensuring that the noise level is below 70dB when operating at full load, meeting environmental protection requirements. At the same time, the sealing design effectively prevents dust leakage and odor diffusion, protecting the production environment. Furthermore, the transparent window on the quick-release cover allows for more direct observation of the production process.

[0019] Energy saving and consumption reduction: Through the unique screw structure design, the overall conveying and feeding power is less than 1.5kW, which saves more than 60% energy compared with the traditional vibration conveying and cooling method.

[0020] Through the above-mentioned technical solution, this invention significantly improves the cooling efficiency in the PVC granulation process, simplifies the equipment maintenance and cleaning process, reduces noise and energy consumption, and ensures the environmental friendliness of the production process, thereby improving overall production efficiency and product quality. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of a vacuum conveying cooling structure.

[0022] Figure 2 This is another schematic diagram of a vacuum delivery cooling structure.

[0023] Figure 3 A schematic diagram of a conveyor screw for a vacuum conveying and cooling structure.

[0024] Figure 4 This is a cross-sectional schematic diagram of a vacuum delivery cooling structure. Detailed Implementation

[0025] The following description, in conjunction with the accompanying drawings, further illustrates the proposed solution:

[0026] See appendix Figure 1-4 A vacuum conveying and cooling structure includes a cylindrical body 1 and a conveying screw 2 disposed inside the cylindrical body 1;

[0027] The cylinder 1 is provided with an opening, and a cover 11 is detachably provided on the opening. The cylinder 1 is provided with a first water passage cavity 14, which is connected to a first water inlet 12 and a first water outlet 13.

[0028] The conveying screw 2 is connected to the drive motor 5, and the drive motor 5 drives the conveying screw 2 to rotate. The conveying screw 2 is provided with a second water passage chamber 21, a second water inlet 22, and a second water outlet 23. The second water inlet 22 and the second water outlet 23 are both connected to the second water passage chamber 21. The outer surface of the second water passage chamber 21 is the plastic contact layer of the conveying screw 1. The conveying screw 1 is provided with conveying blades 24. The outer wall of the conveying screw 2 and the inner wall of the cylinder 1 form a cooling medium. When the conveying screw 2 rotates, it agitates the plastic particles so that the plastic particles can contact the outer wall of the conveying screw 2 and the inner wall of the cylinder 1 multiple times, forming multiple heat exchanges and achieving rapid heat exchange.

[0029] Preferably, the cylinder 1 is formed by combining multiple cylinder segments, each cylinder segment is provided with a first water inlet 12 and a first water outlet 13 and a first water passage cavity 14, each cylinder segment is provided with a cover 11, the first water inlet 12 and the first water outlet 13 of two adjacent cylinders 1 can be connected in series; or the first water inlet 12 of two adjacent cylinders 1 are both connected to an external water source and the first water outlet 13 of two adjacent cylinders 1 are both connected to external drainage.

[0030] Furthermore, the conveying screw 2 is provided with an input end shank 25 and a tail end shank 26, the conveying screw 2 is located between the input end shank 25 and the tail end shank 26, the second water inlet 22 is located at the front end section of the input end shank 25, and the second water outlet 23 is located at the rear end section of the tail end shank 26.

[0031] Furthermore, the input end handle 25 is provided with a power section 251, which is connected to the drive motor 5. The power section 251 is located between the front end section and the conveying blade 24 to ensure that while the drive motor 5 drives the conveying screw 2 to rotate, it can also send water into the second water passage chamber 21 inside the conveying screw 2, and the rotation of the conveying screw 2 will not be affected during the water delivery process.

[0032] Preferably, the power section 251 of the conveying screw 2 is connected to the drive motor 5 through a gear set, a belt and pulley, or a chain and sprocket.

[0033] Furthermore, the main body of the conveying screw 2 is provided with a tail end 211, and a reverse blade 27 opposite to the direction of the conveying blade 24 is provided on the tail end 211, and a spacer 271 is provided between the reverse blade 27 and the conveying blade 24.

[0034] Furthermore, the cylinder 1 is provided with a discharge port 3, the position of which corresponds to the position of the interval 271 of the conveying screw 2, and a valve is provided on the discharge port 3, which can be opened.

[0035] Furthermore, the conveying screw 1 is also provided with a baffle plate 28, which connects two adjacent conveying blades 24. The height of the baffle plate 28 is less than the height of the conveying blades 24. The baffle plate 28 is provided with an upper baffle plate 281 and a lower baffle plate 282.

[0036] The unique screw design incorporates welded baffles between the blades. At low volumes, the baffles flip the material deposited at the bottom to the upper surface of the screw, increasing the contact area between the material and the cooling screw, extending cooling time, and significantly improving cooling efficiency. At high volumes, the baffles also disperse the material, reducing material adhesion caused by high volumes and improving product yield.

[0037] Furthermore, the cover 11 is provided with a connecting lug 111, the cylinder 1 is provided with a manual lock 112 that cooperates with the connecting lug 111, and a sealing gasket 113 is provided between the cover 11 and the cylinder 2.

[0038] Furthermore, the manual lock 112 is provided with a locking ring 114, which can be hung on the connecting lug 111 and lock the cover 11; or the locking ring 114 can leave the connecting lug 111 and open the cover 11.

[0039] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0040] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this utility model, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0041] 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, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0042] In this utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0043] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0044] The above preferred embodiments should be regarded as illustrative examples of the embodiments of the present application. Any technical deductions, substitutions, improvements, etc. that are similar to or based on the present application should be considered within the scope of protection of this patent.

Claims

1. A vacuum conveying cooling structure, characterized in that, Includes the cylinder body and the conveying screw installed inside the cylinder body; The cylinder is provided with an opening, and a cover is detachably provided on the opening. The cylinder is provided with a first water passage cavity, which is connected to a first water inlet and a first water outlet. The conveying screw is connected to the drive motor, and the drive motor drives the conveying screw to rotate. The conveying screw is provided with a second water passage cavity, a second water inlet, and a second water outlet. The second water inlet and the second water outlet are both connected to the second water passage cavity. The outer surface of the second water passage cavity is the plastic contact layer of the conveying screw. The conveying screw is provided with conveying blades and a material-blocking and tilting plate. The material-blocking and tilting plate connects two adjacent conveying blades. The height of the material-blocking and tilting plate is less than the height of the conveying blades. The material-blocking and tilting plate is provided with an upper material-blocking and tilting plate and a lower material-blocking and tilting plate.

2. The vacuum conveying cooling structure according to claim 1, characterized in that, The conveying screw is provided with an input end shank and a tail end shank, the conveying screw is located between the input end shank and the tail end shank, the second water inlet is located at the front end section of the input end shank, and the second water outlet is located at the rear end section of the tail end shank.

3. The vacuum conveying and cooling structure according to claim 2, characterized in that, The input end handle is provided with a power section, which is connected to the drive motor and is located between the front end section and the conveying blade.

4. The vacuum conveying cooling structure according to claim 1, characterized in that, The main body of the conveying screw is provided with a tail end, and a counter-blade opposite to the direction of the conveying blade is provided on the tail end. A gap is provided between the counter-blade and the conveying blade.

5. The vacuum conveying and cooling structure according to claim 1, characterized in that, The cylinder is provided with a discharge port, the position of which corresponds to the position of the interval part of the conveying screw.

6. The vacuum conveying cooling structure according to claim 1, characterized in that, The cover is provided with a connecting lug, and the cylinder is provided with a manual lock that cooperates with the connecting lug.

7. The vacuum conveying and cooling structure according to claim 6, characterized in that, The manual lock is equipped with a locking ring, which can be hung on the connecting lug and lock the cover; or the locking ring can be removed from the connecting lug and the cover can be opened.

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