Pelletizer for PVDF (Polyvinylidene Fluoride)

Abstract

The utility model discloses a granulator for PVDF (Polyvinylidene Fluoride), and relates to the related technical field of PVDF granulation. The device comprises a granulation cutting assembly, the granulation cutting assembly comprises a granulation supporting disc, the surface of the granulation supporting disc is provided with a granulation feeding port, the lower surface of the granulation supporting disc is rotationally connected with a rotating shaft, the circumferential side face of the rotating shaft is fixedly connected with a cutting supporting disc, and the circumferential side face of the cutting supporting disc is fixedly connected with an arc-shaped cutting knife. A granulation adjusting disc is arranged on the peripheral side face of the cutting supporting disc in a sliding mode, a granulation driving assembly is arranged on the lower surface of the granulation cutting assembly and comprises an adjusting outer threaded pipe and a driving inner threaded pipe, and a driving shaft fixedly connected with the rotating shaft is rotationally arranged in the adjusting outer threaded pipe. According to the utility model, the internal threaded pipe is driven to rotate to drive the adjusting external threaded pipe to move up and down, so that the distance between the cutting support disc and the granulation adjusting disc is adjusted, the production requirements of PVDF particles with different sizes are met, and the application range of the equipment is widened.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the related technical field of PVDF granulation, especially relates to the granulator for PVDF. BACKGROUND

[0002] PVDF is a kind of thermoplastic fluoropolymer, its molecular chain is arranged closely, has excellent chemical corrosion resistance, high temperature resistance, oxidation resistance, weather resistance and good mechanical strength and electrical insulation performance, the processing method of PVDF includes injection molding, extrusion, blow molding, calendering etc., in the processing process, temperature, pressure and shear rate etc. Parameters need to be strictly controlled to ensure the quality and performance of product, PVDF is widely used in multiple fields due to its unique performance.

[0003] Common PVDF is cut into pieces when granulating, PVDF strip produced is transported to cutting equipment, and the cutting equipment is used to cut PVDF strip to produce PVDF particles, but in actual use process, different cutting equipment is needed when producing PVDF of different sizes, thereby causing that the use of equipment is lower. Therefore, we provide the granulator for PVDF to solve the above technical problems. UTILITY MODEL CONTENT

[0004] The utility model aims at providing the granulator for PVDF, solves the problems in the above background technology through the specific structure design of granulation cutting assembly and granulation drive assembly.

[0005] To solve the above technical problems, the utility model is realized through the following technical scheme: the utility model is the granulator for PVDF, including granulation cutting assembly, the granulation cutting assembly includes the granulation support disc of fixed setting, the granulation support disc surface is equipped with a plurality of granulation feed ports, the lower surface of the granulation support disc is rotatably connected with the rotating shaft, the rotating shaft circumferential surface is fixedly connected with the cutting support disc, the cutting support disc circumferential surface is fixedly connected with the arc-shaped cutting knife, the cutting support disc circumferential surface is slidably provided with the granulation adjusting disc, the granulation adjusting disc surface is equipped with the arc-shaped through hole, and the arc-shaped through hole is below the arc-shaped cutting knife;The lower surface of the granulation cutting assembly is provided with the granulation drive assembly, the granulation drive assembly includes the adjusting outer threaded tube rotatably connected with the lower surface of the granulation adjusting disc and the drive inner threaded tube rotatably arranged, the drive inner threaded tube is threadedly connected between the adjusting outer threaded tube, the adjusting outer threaded tube is coaxially rotatably provided with the drive shaft fixedly connected between the rotating shaft.

[0006] The utility model further sets up, the prilling cutting assembly still includes prilling support frame, two support frames are fixedly connected with the symmetry of prilling support frame circumference side, prilling support disc is fixedly connected on prilling support frame inner wall, and cutting support disc and prilling adjusting disc all are located prilling support frame inside, the rotation axis circumference side fixedly connected with two limit strips, the sliding fit between prilling adjusting disc and limit strip, the prilling support frame inner bottom fixedly connected with annular baffle, fixedly connected between annular baffle and prilling adjusting disc, and the annular baffle is telescopic structure.

[0007] The utility model further sets up, prilling support frame circumference side is equipped with the discharge gate, the arc pusher plate of prilling adjusting disc lower surface is fixedly connected with through telescopic link, the sliding fit between arc pusher plate and annular baffle outer wall and prilling support frame inner wall.

[0008] The utility model further sets up, the prilling drive assembly still includes horizontal support platform, the first transmission wheel and second transmission wheel are rotationally arranged on horizontal support platform upper surface, and are connected through transmission belt between the first transmission wheel and second transmission wheel.

[0009] The utility model further sets up, one end fixedly connected with transmission bevel gear of the drive shaft sliding and penetrating first transmission wheel and horizontal support platform, and drive bevel gear is fixedly connected with through extension stand on horizontal support platform lower surface, and drive bevel gear and transmission bevel gear are intermeshed.

[0010] The utility model has following beneficial effect: 1, the utility model passes through setting prilling cutting assembly and prilling drive assembly, before prilling, control first transmission wheel synchronous rotation with second transmission wheel, under the thread cooperation of drive inner thread pipe and adjusting outer thread pipe, adjusting outer thread pipe moves up and down, until the interval between cutting support disc and prilling adjusting disc is consistent with the length required by prilling, to this end realizes the production need of different length's PVDF particle, improves the application range of equipment.

[0011] 2, the utility model passes through setting prilling cutting assembly and prilling drive assembly, and PVDF strip is inserted into corresponding prilling feed port, under the gravity of PVDF strip itself, falls on prilling adjusting disc, along with the continuous rotation of arc cutting knife, carries out the granulation operation to PVDF strip, and PVDF particle falls on prilling support frame inner bottom, and arc pusher plate synchronous movement carries out the pusher operation, to this end realizes the prilling and discharge operation of PVDF particle, makes the operation process smooth.

[0012] Of course, implementing any product of the present application does not necessarily need to achieve all the advantages described above at the same time. BRIEF DESCRIPTION OF DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiment description. Obviously, the drawings described in the following only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0014] Figure 1 It is a structure schematic view of the granulator for PVDF.

[0015] Figure 2 It is a structure schematic view of the granulator for PVDF. Figure 1 It is a longitudinal structure sectional view of the granulator for PVDF.

[0016] Figure 3 It is a structure schematic view of the granulator cutting assembly in the present application.

[0017] Figure 4 It is a longitudinal structure sectional view of the granulator cutting assembly in the present application.

[0018] Figure 5 It is a partial structure schematic view of the granulator cutting assembly in the present application.

[0019] Figure 6 It is a structure schematic view of the granulator driving assembly in the present application.

[0020] Figure 7 It is another angle structure schematic view of the granulator driving assembly in the present application.

[0021] Figure 8 It is a longitudinal structure sectional view of the granulator driving assembly in the present application.

[0022] In the drawings, the component list represented by each number is as follows:

[0023] 1-granulator cutting assembly, 101-granulator support disc, 102-granulator feeding port, 103-cutting support disc, 104-arc-shaped cutting knife, 105-granulator adjusting disc, 106-granulator support frame, 107-limiting strip, 108-annular baffle, 109-discharge port, 110-arc-shaped pushing plate, 2-granulator driving assembly, 201-adjusting outer threaded tube, 202-driving inner threaded tube, 203-driving shaft, 204-first transmission wheel, 205-second transmission wheel, 206-limiting tube, 207-guiding slide rod, 208-transmission conical gear, 209-driving conical gear. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. Specific embodiment one

[0026] Please refer to Figures 1-8 The utility model discloses a granulator for PVDF, including granulation cutting assembly 1, specifically, granulation cutting assembly 1 includes the granulation support disc 101 of fixed setting, is equipped with a plurality of granulation feed port 102 on the surface of granulation support disc 101, the lower surface of granulation support disc 101 is rotatably connected with the rotating shaft, the peripheral surface of rotating shaft is fixedly connected with cutting support disc 103, the peripheral surface of cutting support disc 103 is fixedly connected with arc cutting knife 104, the peripheral surface of cutting support disc 103 is slidably provided with granulation adjusting disc 105, the surface of granulation adjusting disc 105 is provided with arc through -going hole, and arc through -going hole is located below arc cutting knife 104.

[0027] Further, the lower surface of granulation cutting assembly 1 is provided with granulation drive assembly 2, and granulation drive assembly 2 includes adjusting outer threaded tube 201 rotatably connected to the lower surface of granulation adjusting disc 105 and driving inner threaded tube 202 rotatably arranged, driving inner threaded tube 202 is threadedly matched between adjusting outer threaded tube 201, adjusting outer threaded tube 201 is rotatably arranged with driving shaft 203 fixedly connected with rotating shaft in the inside coaxial core, rotating shaft is coaxially fixedly connected with driving shaft 203, and driving shaft 203 extends to granulation drive assembly 2 through cutting support disc 103.

[0028] The operation process of the embodiment is as follows: before granulation, the distance between the cutting support disc 103 and the granulation adjusting disc 105 is adjusted according to the required granulation length, the driving inner threaded pipe 202 is controlled to rotate, and the adjusting outer threaded pipe 201 moves up and down under the cooperation of the threads of the driving inner threaded pipe 202 and the adjusting outer threaded pipe 201, until the distance between the cutting support disc 103 and the granulation adjusting disc 105 is consistent with the required granulation length; during granulation, the formed PVDF strip is inserted into the corresponding granulation feeding port 102 of the granulation support disc 101, and the PVDF strip falls under the action of its own gravity, stops falling when the lower end of the PVDF strip contacts the arc-shaped cutting knife 104, and continues to fall when the PVDF strip is separated from the arc-shaped cutting knife 104 and is located above the granulation adjusting disc 105, and the arc-shaped cutting knife 104 continues to rotate under the continuous rotation of the cutting support disc 103, and the PVDF strip above the adjusting disc 105 is cut when the arc-shaped cutting knife 104 contacts the PVDF strip above the adjusting disc 105, and the cut PVDF particles fall through the arc-shaped through port under the rotation of the adjusting disc 105, thereby realizing the granulation process of the PVDF. Specific embodiment two

[0030] Please refer to Figures 1-8 On the basis of the specific embodiment one, specifically, the granulation cutting assembly 1 further comprises a granulation support frame 106, two support frames are fixedly connected to the circumferential side of the granulation support frame 106 in a symmetrical manner, the support frames are fixedly connected to the two sides of the granulation support frame 106 in a symmetrical manner, and are used for stable installation of the overall device, the granulation support disc 101 is fixedly connected to the inner wall of the granulation support frame 106, and the cutting support disc 103 and the granulation adjusting disc 105 are located inside the granulation support frame 106.

[0031] Further, two limiting strips 107 are fixedly connected to the circumferential side of the rotating shaft in a symmetrical manner, the granulation adjusting disc 105 is in sliding cooperation with the limiting strips 107, the annular baffle 108 is fixedly connected between the granulation adjusting disc 105 and the inner bottom of the granulation support frame 106, and the annular baffle 108 is a telescopic structure.

[0032] Further, the granulation support frame 106 is provided with a discharge port 109 on the circumferential side, the arc-shaped pushing plate 110 is fixedly connected to the lower surface of the granulation adjusting disc 105 through the telescopic rod, the arc-shaped pushing plate 110 is in sliding cooperation with the outer wall of the annular baffle 108 and the inner wall of the granulation support frame 106, and the inner bottom of the granulation support frame 106 is an inclined structure (gradually inclined downward to the position of the discharge port 109, facilitating the sliding of the PVDF particles out).

[0033] The operation process of the embodiment is as follows: when the cut PVDF particles fall into the bottom of the granulation support frame 106 through the arc-shaped through hole with the rotation of the adjusting disc 105, the arc-shaped pushing plate 110 is driven to move synchronously with the continuous rotation of the granulation adjusting disc 105, and the PVDF particles falling on the bottom of the granulation support frame 106 are pushed to move synchronously by the arc-shaped pushing plate 110. When the PVDF particles move to the position of the discharge port 109, they gradually roll out of the discharge port 109. The inclination angle of the bottom of the granulation support frame 106 is 15°, which ensures that the PVDF particles naturally slide to the discharge port 109, facilitating the taking out of the PVDF particles. Specific embodiment three

[0035] Please refer to Figures 1-8 On the basis of specific embodiment one and specific embodiment two, specifically, the granulation driving assembly 2 further comprises a horizontal support table, a first transmission wheel 204 and a second transmission wheel 205 are rotatably arranged on the upper surface of the horizontal support table, the first transmission wheel 204 and the second transmission wheel 205 are connected by a transmission belt, a first drive motor is fixedly installed on the lower surface of the horizontal support table, and the output shaft of the first drive motor is fixedly connected with the second transmission wheel 205.

[0036] Further, the driving internal threaded pipe 202 is fixedly connected to the upper surface of the first transmission wheel 204, two limiting pipes 206 are fixedly connected to the upper surface of the first transmission wheel 204 in a symmetrical manner, the driving internal threaded pipe 202 is fixed to the center position of the upper surface of the first transmission wheel 204 through a key groove or welding, and two guide sliding rods 207 are fixedly connected to the lower surface of the granulation adjusting disc 105 in a symmetrical manner. The guide sliding rod 207 is in sliding fit with the corresponding limiting pipe 206.

[0037] Further, the driving shaft 203 is fixedly connected at one end thereof which slides through the first transmission wheel 204 and the horizontal support table to a transmission conical gear 208, the horizontal support table is fixedly connected at the lower surface thereof to a driving conical gear 209 through an extension stand, the driving conical gear 209 and the transmission conical gear 208 are in meshing with each other, a second drive motor is fixedly installed on the side face of the extension stand away from the driving conical gear 209, and the output shaft of the second drive motor is fixedly connected with the driving conical gear 209.

[0038] The operation process of the embodiment is as follows: when it is needed to adjust the distance between the cutting support disc 103 and the granulation adjusting disc 105, the first driving motor is started to drive the second transmission wheel 205 to rotate, under the connection of the transmission belt, the first transmission wheel 204 is synchronously rotated to drive the inner threaded pipe 202 to rotate synchronously with the first transmission wheel 204, under the thread cooperation between the driving inner threaded pipe 202 and the adjusting outer threaded pipe 201, the adjusting outer threaded pipe 201 is moved up and down, in this process, the guide slide rod 207 is synchronously moved up and down along the corresponding limiting pipe 206, until the distance between the cutting support disc 103 and the granulation adjusting disc 105 is consistent with the length required for granulation; when it is needed to granulate, the second driving motor is started to drive the driving bevel gear 209 to rotate, under the meshing cooperation between the driving bevel gear 209 and the transmission bevel gear 208, the transmission bevel gear 208 is rotated to drive the driving shaft 203 to rotate, the driving shaft is rotated to drive the rotating shaft to rotate, so that the cutting support disc 103 drives the arc-shaped cutting knife 104 to rotate to cut and granulate.

[0039] In the description of the present specification, the description referring to the terms "one embodiment", "an example", "a specific example" and the like means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0040] The preferred embodiments of the present application disclosed above are only used to help explain the present application. The preferred embodiments do not describe all the details and do not limit the present application to the specific embodiments described. Obviously, according to the content of the present specification, many modifications and changes can be made. The present specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present application, so that the persons skilled in the art can well understand and utilize the present application. The present application is limited by the claims and the entire scope and equivalents thereof.

Claims

1. A granulator for PVDF, comprising a granulation cutting assembly (1), characterized in that: the granulation cutting assembly (1) comprises a fixedly arranged granulation support disc (101), a plurality of granulation feed ports (102) are formed on the surface of the granulation support disc (101), a rotating shaft is rotatably connected to the lower surface of the granulation support disc (101), a cutting support disc (103) is fixedly connected to the circumferential surface of the rotating shaft, an arc-shaped cutting knife (104) is fixedly connected to the circumferential surface of the cutting support disc (103), a granulation adjusting disc (105) is slidably arranged on the circumferential surface of the cutting support disc (103), an arc-shaped through hole is formed on the surface of the granulation adjusting disc (105), and the arc-shaped through hole is located below the arc-shaped cutting knife (104); a granulation driving assembly (2) is arranged on the lower surface of the granulation cutting assembly (1), the granulation driving assembly (2) comprises an adjusting external threaded tube (201) rotatably connected to the lower surface of the granulation adjusting disc (105) and a driving internal threaded tube (202) rotatably arranged, the driving internal threaded tube (202) is threadedly connected with the adjusting external threaded tube (201), and a driving shaft (203) is fixedly connected between the rotating shaft and the driving internal threaded tube (202).

2. The pelletizer for PVDF according to claim 1, characterized by, The granulation cutting assembly (1) further comprises a granulation support frame (106), two support frames are symmetrically fixedly connected to the circumferential surface of the granulation support frame (106), the granulation support disc (101) is fixedly connected to the inner wall of the granulation support frame (106), and the cutting support disc (103) and the granulation adjusting disc (105) are located inside the granulation support frame (106).

3. The pelletizer for PVDF according to claim 2, characterized by, Two limiting strips (107) are symmetrically fixedly connected to the circumferential surface of the rotating shaft, the granulation adjusting disc (105) is slidably connected with the limiting strips (107), an annular baffle (108) is fixedly connected to the inner bottom of the granulation support frame (106), the annular baffle (108) is fixedly connected with the granulation adjusting disc (105), and the annular baffle (108) is a telescopic structure.

4. The pelletizer for PVDF according to claim 3, characterized by, An outlet (109) is formed on the circumferential surface of the granulation support frame (106), an arc-shaped pushing plate (110) is fixedly connected to the lower surface of the granulation adjusting disc (105) through a telescopic rod, and the arc-shaped pushing plate (110) is slidably connected with the outer wall of the annular baffle (108) and the inner wall of the granulation support frame (106).

5. The pelletizer for PVDF according to claim 4, characterized by The granulation driving assembly (2) further comprises a horizontal support table, a first transmission wheel (204) and a second transmission wheel (205) are rotatably arranged on the upper surface of the horizontal support table, and the first transmission wheel (204) and the second transmission wheel (205) are connected through a transmission belt.

6. The pelletizer for PVDF according to claim 5, characterized by The driving internal threaded tube (202) is fixedly connected to the upper surface of the first transmission wheel (204), two limiting tubes (206) are symmetrically fixedly connected to the upper surface of the first transmission wheel (204), two guide sliding rods (207) are symmetrically fixedly connected to the lower surface of the granulation adjusting disc (105), and the guide sliding rods (207) are slidably connected with the corresponding limiting tubes (206).

7. The pelletizer for PVDF according to claim 6, characterized by The driving shaft (203) is slid through the first transmission wheel (204), and one end of a horizontal support table is fixedly connected with a transmission bevel gear (208), the lower surface of the horizontal support table is fixedly connected with a driving bevel gear (209) through an extension stand, and the driving bevel gear (209) and the transmission bevel gear (208) are in mesh with each other.

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