Feeding mechanism of PVC raw material mixing machine

Abstract

The utility model relates to the technical field of PVC (polyvinyl chloride) production, in particular to a feeding mechanism of a PVC raw material mixing machine, which comprises a feeding port arranged at the top of a stirring machine, a discharging slide way obliquely fixed outside the feeding port and a feeding auger machine for feeding raw materials into the discharging slide way, the stirring shaft is rotationally arranged in the mixing machine, the driving part is used for driving the stirring shaft to rotate, and a material dispersing assembly is arranged at the top end of the stirring shaft. According to the utility model, liquid additives are atomized and sprayed to granular or powdery raw materials falling from the feed port through the atomizing spray head, so that the liquid additives are uniformly mixed with various granular or powdery raw materials in advance, and then the liquid additives are uniformly mixed with the various granular or powdery raw materials in cooperation with the inclined centrifugal disc and the material striking strip which rotate along with the stirring shaft; under the action of centrifugal force and impact force, the randomness and uniformity of various raw materials distributed in the mixing machine can be improved, and the subsequent uniform mixing efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of PVC production technology, and in particular to a feeding mechanism for a PVC raw material mixer. Background Technology

[0002] PVC, also known as polyvinyl chloride, is one of the commonly used thermoplastics. Its raw materials include solid granules and powders as well as liquid additives at room temperature. All raw materials are fed into a mixer, and then heated and stirred to melt the solid raw materials into a gel, which can be better mixed with the powder and liquid substances, improving the physical and chemical mixing between various raw materials and improving the quality of the finished product.

[0003] However, due to the significant differences in the original states of various raw materials, after the raw materials are transported into the mixer by the feeding mechanism, powder or some particles are prone to agglomeration under the influence of liquid raw materials, which affects the subsequent mixing efficiency of raw materials. Utility Model Content

[0004] In view of this, the purpose of this utility model is to propose a feeding mechanism for a PVC raw material mixer to solve the problem that powder or some particles tend to clump together under the influence of liquid raw materials after various raw materials are transported into the mixer by the feeding mechanism.

[0005] To achieve the above objectives, this utility model provides a feeding mechanism for a PVC raw material mixer, including a feed inlet located at the top of the mixer, and the feeding mechanism further includes:

[0006] An inclined feeding chute fixed outside the feed inlet and a feeding auger that supplies raw materials into the feeding chute.

[0007] The mixer has a rotating stirring shaft and a drive unit for driving the stirring shaft to rotate. The top of the stirring shaft is provided with a material dispersing assembly, which includes a centrifugal disc that is inclined and fixed to the top of the stirring shaft and several impact bars that are circumferentially fixed to the outside of the centrifugal disc. The raw material falls from the feed inlet onto the centrifugal disc and is randomly dispersed into various parts of the mixer under the action of centrifugal force and the impact force of the impact bars.

[0008] The atomizing nozzle, which is horizontally positioned between the feed inlet and the centrifugal disc, and the supply section that supplies liquid raw materials to the atomizing nozzle, premix the atomized liquid raw materials with the solid raw materials.

[0009] Preferably, the outlet of the atomizing nozzle is located vertically between the feed inlet and the centrifugal disc, and the outlet of the atomizing nozzle and the stirring shaft are located on opposite sides of the feed inlet in the horizontal direction.

[0010] Preferably, the supply unit includes a liquid storage tank and a supply pump disposed inside the liquid storage tank. The output end of the supply pump is connected to the input end of the atomizing nozzle by a supply pipe, and the top of the liquid storage tank is provided with a feeding port.

[0011] Preferably, the liquid storage tank is located on the ground and close to the outside of the mixer.

[0012] Preferably, the drive unit includes a servo motor fixed to the bottom of the mixer and a flat gear fixed to the output end of the servo motor. The bottom end of the stirring shaft passes downward through the bottom of the mixer, and a toothed ring is fixedly sleeved on the bottom end of the outside of the stirring shaft. The tooth surface of the toothed ring meshes with the tooth surface of the flat gear.

[0013] Preferably, the angle between the top of the centrifugal disc and the horizontal plane is greater than 0° and less than 45°, and the axis of the impeller is collinear with one of the radial lines of the centrifugal disc.

[0014] Preferably, the axis of the auger and the axis of the stirring shaft are in the same vertical plane, and the angle between the axis of the auger and the axis of the stirring shaft is greater than 0° and less than 90°.

[0015] Preferably, the outlet of the atomizing nozzle is oriented in the same direction as one of the horizontal radial directions of the centrifugal disc, and the outlet of the atomizing nozzle is oriented towards the outside of the stirring shaft.

[0016] The beneficial effects of this utility model are:

[0017] This invention uses an atomizing nozzle to spray liquid additives onto granular or powdered raw materials falling from the feed inlet. This allows the liquid additives to be mixed relatively evenly with the various granular or powdered raw materials. The pre-mixed raw materials then fall onto a centrifugal disc tilted at the top of the stirring shaft. The centrifugal disc rotates synchronously with the stirring shaft, and the raw materials falling onto the centrifugal disc are randomly dispersed circumferentially into the mixer under the action of centrifugal force. Combined with the raw materials being struck horizontally by the rotating impeller, the randomness of the circumferential dispersion of the raw materials into the mixer is further improved, thereby improving the uniformity of the distribution of various raw materials in the mixer during feeding and improving the efficiency of subsequent uniform mixing of various raw materials. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only for this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a three-dimensional illustration of the present invention. Figure 1 ;

[0020] Figure 2 This is a three-dimensional illustration of the present invention. Figure 2 ;

[0021] Figure 3 This is a three-dimensional illustration of the present invention. Figure 3 ;

[0022] Figure 4 for Figure 3 The main view.

[0023] The diagram is marked as follows:

[0024] 1. Feed inlet; 2. Feed auger; 3. Discharge chute; 4. Atomizing nozzle; 5. Supply unit; 51. Liquid storage tank; 52. Supply pipe; 53. Feeding port; 6. Stirring shaft; 7. Drive unit; 8. Dispersing assembly; 81. Centrifugal disc; 82. Conveying bar. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to specific embodiments.

[0026] It should be noted that, unless otherwise defined, the technical or scientific terms used in this utility model should have the ordinary meaning understood by one of ordinary skill in the art to which this utility model pertains. The terms "first," "second," and similar terms used in this utility model do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed following the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0027] like Figures 1 to 4 As shown, a feeding mechanism for a PVC raw material mixer includes a feed inlet 1 located at the top of the mixer. The feeding mechanism also includes:

[0028] The feeding chute 3 is tilted and fixed outside the feed inlet 1, and the feeding auger 2 supplies raw materials into the feeding chute 3.

[0029] The mixer has a rotating stirring shaft 6 and a drive unit 7 for driving the stirring shaft 6 to rotate. The top of the stirring shaft 6 is provided with a material dispersing assembly 8. The material dispersing assembly 8 includes a centrifugal disc 81 that is tilted and fixed to the top of the stirring shaft 6 and several impact bars 82 that are circumferentially fixed to the outside of the centrifugal disc 81. The raw material falls from the feed inlet 1 onto the centrifugal disc 81 and is randomly dispersed to various parts of the mixer under the action of centrifugal force and the impact force of the impact bars 82. This improves the randomness and uniformity of the distribution of solid raw materials in the mixer and avoids the problem of concentrated accumulation of raw materials in the mixer, which would affect the uniformity of subsequent mixing with liquid raw materials.

[0030] The atomizing nozzle 4, which is horizontally positioned between the feed inlet 1 and the centrifugal disc 81, and the supply section 5 that supplies liquid raw materials to the atomizing nozzle 4, premix the atomized liquid raw materials with the solid raw materials, thereby improving the uniformity of the premixing between the solid and liquid raw materials. This reduces the difficulty of uniformly mixing the two states of raw materials in the subsequent process and improves the efficiency of uniform mixing.

[0031] like Figures 2 to 4 As shown, the outlet of the atomizing nozzle 4 is located vertically between the feed inlet 1 and the centrifugal disc 81, and the outlet of the atomizing nozzle 4 and the stirring shaft 6 are located on opposite sides of the feed inlet 1 in the horizontal direction.

[0032] The outlet of the atomizing nozzle 4 is oriented in the same direction as one of the horizontal radial directions of the centrifugal disc 81, and the outlet of the atomizing nozzle 4 faces the outside of the stirring shaft 6. This design allows the atomizing nozzle 4 to spray the atomized liquid material more evenly onto the falling solid material before the granular or powdery material falls to the top of the centrifugal disc 81. This improves the uniformity of premixing between the liquid and solid materials, avoids the problem of uneven distribution and excessive agglomeration between the two states of materials, and reduces the difficulty of subsequent uniform mixing.

[0033] like Figures 1 to 4 As shown, the supply unit 5 includes a liquid storage tank 51 and a supply pump located inside the liquid storage tank 51. The output end of the supply pump is connected to the input end of the atomizing nozzle 4 by a supply pipe 52. The top of the liquid storage tank 51 is provided with a feeding port 53.

[0034] The liquid storage tank 51 is set on the ground and close to the outside of the mixer. This design allows the liquid additive to be supplied to the atomizing nozzle 4, which atomizes and sprays the liquid additive onto the falling granular or powdery raw materials. This achieves uniform premixing between solid and liquid raw materials, avoiding uneven distribution of liquid raw materials among solid raw materials and clumping, which would affect the uniform mixing efficiency and mixing effect of various raw materials in the subsequent process.

[0035] like Figures 2 to 4As shown, the drive unit 7 includes a servo motor fixed to the bottom of the mixer and a flat gear fixed to the output end of the servo motor. The bottom end of the stirring shaft passes downward through the bottom of the mixer, and a toothed ring is fixedly sleeved on the bottom of the outside of the stirring shaft. The tooth surface of the toothed ring meshes with the tooth surface of the flat gear. With this design, the stirring shaft 6 can be driven to rotate and drive the centrifugal disk 81 to rotate synchronously. After the granular or powdered raw materials fall to the top of the centrifugal disk 81, they will be affected by centrifugal force and change the lateral position of the falling raw materials. This can improve the randomness of the raw materials being dispersed in the mixer and avoid the accumulation of raw materials in a directional distribution, which would affect the efficiency of subsequent uniform mixing.

[0036] like Figures 2 to 4 As shown, the angle between the top of the centrifugal disc 81 and the horizontal plane is greater than 0° and less than 45°, and the straight line intersecting the top of the centrifugal disc 81 and the horizontal plane is a horizontal line. The axis of the impact bar 82 is collinear with one of the radial lines of the centrifugal disc 81. This design allows the highest and lowest points of the centrifugal disc 81 to alternately pass under the feed inlet 1 when the centrifugal disc 81 rotates synchronously with the stirring shaft 6. This causes the impact angle and impact force of the falling granular or powdery raw materials to change constantly when they hit the centrifugal disc 81, thereby improving the randomness and uniformity of their distribution in the mixer. In addition, with the synchronous rotation of the impact bar 82 with the stirring shaft 6, the granular raw materials that are hit laterally by the impact bar 82 at different heights will be knocked away at different angles, which can further improve the randomness of the distribution of raw materials in the mixer and avoid the same raw material from accumulating too much in one place, thus affecting the efficiency of subsequent uniform mixing.

[0037] like Figures 1 to 4 As shown, the axis of the auger 2 and the axis of the stirring shaft 6 are in the same vertical plane, and the angle between the axis of the auger 2 and the axis of the stirring shaft 6 is greater than 0° and less than 90°. This design allows the auger 2 to stably convey granular or powdered raw materials into the feed inlet 1 through the feed chute 3, so that the granular or powdered raw materials can fall vertically to the top of the centrifugal disc 81. When the centrifugal disc 81 rotates synchronously with the stirring shaft 6, the granular or powdered raw materials are thrown to various parts of the mixer under the action of centrifugal force, improving the uniformity of the distribution of raw materials in the mixer, so as to improve the uniform mixing efficiency between subsequent raw materials.

[0038] Working principle: The drive unit 7 first drives the stirring shaft 6 to rotate, which in turn drives the centrifugal disc 81 to rotate synchronously. Then, the auger 2 feeds granular or powdered raw materials into the feed inlet 1 through the feeding chute 3, allowing the granular or powdered raw materials to fall vertically downwards onto the top of the rotating centrifugal disc 81. Before the solid raw materials fall to the top of the centrifugal disc 81, the atomizing nozzle 4 sprays the atomized liquid raw materials more evenly onto the falling solid raw materials, improving the uniformity of premixing between the liquid and solid raw materials. This avoids the problem of uneven distribution and excessive agglomeration between the two states of raw materials, reducing the difficulty of subsequent uniform mixing. The two states of raw materials are mixed... After premixing in the air inside the mixer, the material falls onto the top of the centrifugal disc 81. As the centrifugal disc 81, which is tilted at the top of the stirring shaft 6, rotates, its highest and lowest points alternately pass under the feed inlet 1. This causes the impact angle and force of the falling granular or powdery raw materials hitting the centrifugal disc 81 to change constantly, thereby improving the randomness and uniformity of their distribution in the mixer. In addition, with the synchronous rotation of the impeller 82 along with the stirring shaft 6, the granular raw materials that are laterally hit by the impeller 82 at different heights will be knocked away at different angles. This can further improve the randomness of the distribution of raw materials in the mixer and prevent the same raw material from accumulating too much in one place, which would affect the efficiency of subsequent uniform mixing.

[0039] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples; within the framework of the present invention, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in the details for the sake of brevity.

[0040] This utility model is intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A feeding mechanism for a PVC raw material mixer, comprising a feed inlet (1) located at the top of the mixer, characterized in that, The feeding mechanism also includes: The feeding chute (3) is tilted and fixed outside the feed inlet (1) and the feeding auger (2) supplies raw materials into the feeding chute (3); Rotate the stirring shaft (6) located inside the mixer and the drive unit (7) for driving the stirring shaft (6) to rotate. The top end of the stirring shaft (6) is provided with a material dispersing assembly (8). The material dispersing assembly (8) includes a centrifugal disc (81) that is inclined and fixed to the top end of the stirring shaft (6) and several impact bars (82) that are circumferentially fixed to the outside of the centrifugal disc (81). The raw material falls from the feed inlet (1) onto the centrifugal disc (81) and, under the action of centrifugal force and the impact force of the impact bars (82), the raw material is randomly dispersed to various parts inside the mixer. The atomizing nozzle (4) is horizontally positioned between the feed inlet (1) and the centrifugal disc (81), and the supply section (5) supplies liquid raw materials to the atomizing nozzle (4), so that the atomized liquid raw materials are premixed with the solid raw materials.

2. The feeding mechanism of the PVC raw material mixer according to claim 1, characterized in that, The outlet of the atomizing nozzle (4) is located vertically between the feed inlet (1) and the centrifugal disc (81), and the outlet of the atomizing nozzle (4) and the stirring shaft (6) are located on opposite sides of the feed inlet (1) in the horizontal direction.

3. The feeding mechanism of the PVC raw material mixer according to claim 1, characterized in that, The supply unit (5) includes a liquid storage tank (51) and a supply pump located inside the liquid storage tank (51). The output end of the supply pump is connected to the input end of the atomizing nozzle (4) by a supply pipe (52). The top of the liquid storage tank (51) is provided with a feeding port (53).

4. The feeding mechanism of the PVC raw material mixer according to claim 3, characterized in that, The liquid storage tank (51) is located on the ground and is close to the outside of the mixer.

5. The feeding mechanism of the PVC raw material mixer according to claim 1, characterized in that, The drive unit (7) includes a servo motor fixed to the bottom of the mixer and a flat gear fixed to the output end of the servo motor. The bottom end of the stirring shaft (6) passes downward through the bottom of the mixer, and a toothed ring is fixedly sleeved on the bottom end of the stirring shaft (6). The toothed surface of the toothed ring meshes with the toothed surface of the flat gear.

6. The feeding mechanism of the PVC raw material mixer according to claim 1, characterized in that, The angle between the top of the centrifugal disc (81) and the horizontal plane is greater than 0° and less than 45°, and the axis of the impeller (82) is collinear with one of the radial lines of the centrifugal disc (81).

7. The feeding mechanism of the PVC raw material mixer according to claim 1, characterized in that, The axis of the auger (2) and the axis of the stirring shaft (6) are in the same vertical plane, and the angle between the axis of the auger (2) and the axis of the stirring shaft (6) is greater than 0° and less than 90°.

8. The feeding mechanism of the PVC raw material mixer according to claim 2, characterized in that, The outlet of the atomizing nozzle (4) is oriented in the same direction as one of the horizontal radial directions of the centrifugal disc (81), and the outlet of the atomizing nozzle (4) is oriented towards the outside of the stirring shaft (6).

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