Vacuum conveying cooling structure

Abstract

The invention provides a vacuum conveying cooling structure. The vacuum conveying cooling structure 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] The invention relates to a vacuum conveying cooling structure. Background Art

[0002] In the PVC granulation production process, rapid cooling of granules is crucial to ensure product quality, prevent adhesion and subsequent processing. Traditional cooling and conveying devices often have problems such as low cooling efficiency, complex maintenance, high noise, high energy consumption and environmental pollution. Therefore, it is particularly important to develop a PVC granulation cooling and conveying device that integrates efficient cooling, easy maintenance, low noise, energy saving and environmental protection.

[0003] When the existing conveying screw is conveying at a low volume rate, the material is deposited at the bottom of the screw barrel. Driven by the motor, the material is pushed forward as the blades rotate. The contact surface with the outer surface of the screw is small and the cooling efficiency is low. When conveying at a high volume rate (80%-90%), the material is filled in the screw barrel, which greatly increases the friction between the material and the screw blades, causing the particles deposited at the bottom to rub against the screw blades, resulting in powdery defective products. In addition, high volume is prone to particle adhesion. Summary of the invention

[0004] The present invention provides a vacuum conveying and cooling structure, comprising a barrel and a conveying screw arranged in the barrel;

[0005] The cylinder is provided with an opening, a cover is detachably provided on the opening, a first water passage cavity is provided on the cylinder, and the first water passage cavity is communicated with the first water inlet and the first water outlet;

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

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

[0008] In one or more embodiments, the input end handle is provided with a power section, the power section is connected to the driving 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 in the opposite direction to the conveying blade is provided on the tail end, and a spacer is provided between the reverse blade and the conveying blade.

[0010] In one or more embodiments, a discharge port is provided on the barrel, and the position of the discharge port corresponds to the position of the spacing portion of the conveying screw.

[0011] In one or more embodiments, a material baffle and material flipping plate is further provided on the conveying screw, and the material baffle and material flipping plate connects two adjacent conveying blades, and the height of the material baffle and material flipping plate is smaller than the height of the conveying blades.

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

[0013] In one or more embodiments, a connecting ear is provided on the cover body, and a manual lock cooperating with the connecting ear is provided on the cylinder body.

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

[0015] Beneficial effects of the present invention:

[0016] Efficient cooling system: The optimized conveying screw with the second water chamber and the barrel with the first water chamber form a double cooling design of internal and external cooling, ensuring that the PVC particles are fully in contact with the cooling medium during the conveying process to achieve efficient heat exchange. By adjusting the flow and temperature of the water, a fast and uniform cooling effect can be achieved.

[0017] Easy-to-maintain open structure: The barrel adopts a U-shaped open design, which is convenient for daily maintenance and cleaning. The screw speed is set to 8-16rpm. The low speed design reduces the wear between the particles and the blades, further extending the service life of the equipment, achieving basic maintenance-free, and also reducing the unqualified rate of finished products caused by powdery substances produced by friction.

[0018] Environmentally friendly and low-noise design: The device adopts a quick-release sealing cover design to ensure that the noise level is less than 70db when the device is running 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. At the same time, the transparent window on the quick-release cover can also observe the actual production situation more intuitively.

[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 technical scheme, the present invention significantly improves the cooling efficiency in the PVC granulation process, simplifies the maintenance and cleaning process of the equipment, reduces noise and energy consumption, ensures the environmental protection of the production process, and improves the overall production efficiency and product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of vacuum conveying cooling structure.

[0022] Figure 2 Another schematic diagram of the vacuum conveying cooling structure.

[0023] Figure 3 Schematic diagram of the conveying screw of the vacuum conveying cooling structure.

[0024] Figure 4 It is a cross-sectional schematic diagram of the vacuum conveying cooling structure. DETAILED DESCRIPTION

[0025] The present application scheme is further described as follows in conjunction with the accompanying drawings:

[0026] See attached Figure 1-4 A vacuum conveying and cooling structure comprises a barrel 1 and a conveying screw 2 arranged in the barrel 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, and the first water passage cavity 14 is communicated with the first water inlet 12 and the first water outlet 13;

[0028] The conveying screw 2 is connected to the driving motor 5 and the driving 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 barrel 1 form a cooling medium. When the conveying screw 2 rotates, the plastic particles are stirred so that the plastic particles can contact the outer wall of the conveying screw 2 and the inner wall of the barrel 1 for multiple times, forming multiple heat exchanges and realizing rapid heat exchange.

[0029] Preferably, the cylinder 1 is formed by a combination of multiple cylinder sections, each cylinder section is provided with a first water inlet 12, a first water outlet 13 and a first water passage chamber 14, each cylinder section is provided with a cover body 11, and 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 connected to an external water source and the first water outlet 13 of two adjacent cylinders 1 are connected to external drainage.

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

[0031] Furthermore, the input end handle 25 is provided with a power section 251, and the power section 251 is connected to the driving motor 5. The power section 251 is located between the front end section and the conveying blade 24 to ensure that the driving motor 5 can drive the conveying screw 2 to rotate while delivering water to the second water passage chamber 21 in 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 driving motor 5 through a gear set or a belt and a pulley or a chain and a sprocket.

[0033] Furthermore, the main body of the conveying screw 2 is provided with a tail end 211 , and a reverse blade 27 in the opposite direction to 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, a discharge port 3 is provided on the barrel 1 , and the position of the discharge port 3 corresponds to the position of the spacing portion 271 of the conveying screw 2 . A valve is provided on the discharge port 3 , and the valve can be opened.

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

[0036] The unique screw design has a material baffle plate welded between the blades. When the volume is low, the baffle plate flips the material deposited at the bottom to the upper surface of the screw, so that the material has more contact area with the cooling screw, increasing the cooling time and greatly improving the cooling efficiency; when the volume is high, the baffle plate can also play a role in breaking up the material, which to a certain extent reduces the material adhesion caused by the high volume and improves the product yield.

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

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

[0039] In the description of the present invention, it is to be understood that the terms “center”, “longitudinal”, “lateral”, “length”, “width”, “thickness”, “up”, “down”, “front”, “back”, “left”, “right”, “vertical”, “horizontal”, “top”, “bottom”, “inside”, “outside”, “clockwise”, “counterclockwise”, “axial”, “radial”, “circumferential”, etc., indicating orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0040] In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0041] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0042] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0043] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0044] The above-mentioned preferred implementation modes should be regarded as illustrative examples of the implementation modes of the present application scheme. Any technical deductions, replacements, improvements, etc. that are identical or similar to the present application scheme or made based on this scheme should be regarded as within the scope of protection of this patent.

Claims

1. A vacuum conveying cooling structure, characterized in that: It includes a barrel and a conveying screw arranged in the barrel; The cylinder is provided with an opening, a cover is detachably provided on the opening, a first water passage cavity is provided on the cylinder, and the first water passage cavity is communicated with the first water inlet and the first water outlet; The conveying screw is connected to a driving motor and the driving motor drives the conveying screw to rotate. A second water passage chamber, a second water inlet and a second water outlet are provided on the conveying screw. The second water inlet and the second water outlet are both connected to the second water passage chamber. The outer surface of the second water passage chamber is a plastic contact layer of the conveying screw. Conveying blades are provided on the conveying screw.

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

3. The vacuum conveying cooling structure according to claim 1, characterized in that: The input end handle is provided with a power section, the power section is connected to the driving motor, and the power section 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, on which a reverse blade opposite to the conveying blade is provided, and a spacer is provided between the reverse blade and the conveying blade.

5. The vacuum conveying cooling structure according to claim 1, characterized in that: The barrel is provided with a discharge port, and the position of the discharge port corresponds to the position of the spacing portion of the conveying screw.

6. The vacuum conveying cooling structure according to claim 1, characterized in that: The conveying screw is also provided with a material-blocking and material-turning plate, which connects two adjacent conveying blades, and the height of the material-blocking and material-turning plate is smaller than the height of the conveying blades.

7. The vacuum conveying cooling structure according to claim 6, characterized in that: The material blocking and turning plate is provided with an upper material blocking and turning plate and a lower material blocking and turning plate.

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

9. The vacuum cylinder cooling structure according to claim 8, characterized in that: The manual lock is provided with a lock ring, and the lock ring can be hung on the connecting lug and lock the cover body; or the lock ring leaves the connecting lug and opens the cover body.

Images