Polyvinyl alcohol purification equipment

Abstract

The utility model relates to the technical field of polyvinyl alcohol purification, in particular to polyvinyl alcohol purification equipment which comprises a rack, a stirring mechanism and a lower purification box, an upper purification box is arranged at the top end of the rack, a crushing box is connected to the top end of the upper purification box, and a crushing and drying mechanism is arranged on the crushing box and used for preliminarily crushing and drying unpurified polyvinyl alcohol; the stirring mechanism is mounted on the inner wall of the upper purification box; the lower purification box is adjustably mounted on the rack, the top end of the lower purification box is detachably connected with the bottom end of the upper purification box, the output end of the stirring mechanism extends into the lower purification box, and the stirring mechanism is used for turning over and secondarily crushing unpurified polyvinyl alcohol. The drying and crushing mechanism is convenient for preliminarily crushing and drying polyvinyl alcohol, so that the purification efficiency is improved; and through the arrangement of a lower purification box, a coiled pipe, an air inducing pipe and a stirring mechanism, the polyvinyl alcohol is conveniently subjected to secondary crushing and drying, and the purification efficiency is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of polyvinyl alcohol purification, and particularly relates to a polyvinyl alcohol purification device. Background Technique

[0002] Polyvinyl alcohol is an important chemical raw material. The production of polyvinyl alcohol mainly includes polymerization and alcoholysis steps. In the alcoholysis process, the plate-shaped PVA coming out of the alcoholysis machine is crushed, dried and heat-treated to obtain polyvinyl alcohol products, thus completing the purification of polyvinyl alcohol.

[0003] The Chinese patent with the authorization publication number of CN110605161A discloses a production device for polyvinyl alcohol, including a box body, a first motor and a second motor. A crushing mechanism is rotatably connected to the inner side wall of the box body. A material-limiting plate is obliquely arranged below the crushing mechanism. A spiral pushing plate is rotatably connected inside the cylinder. The invention can perform multiple crushing treatments on the products after alcoholysis in the production process of polyvinyl alcohol, thereby reducing the particle size value of the alcoholysis products after crushing, ensuring the crushing effect of the alcoholysis products, and bringing convenience to the staff.

[0004] However, although the above-mentioned disclosed solution can perform multiple crushing treatments on the products after alcoholysis in the production process of polyvinyl alcohol and reduce the particle size value of the alcoholysis products after crushing, the alcoholysis products after crushing still need to be dried, and the crushing and drying operations cannot be carried out simultaneously, reducing the purification efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to propose a polyvinyl alcohol purification device aiming at the problems existing in the background technique.

[0006] The technical solution of the utility model: A polyvinyl alcohol purification device includes a frame, on the top of which an upper purification box is arranged. The top of the upper purification box is connected with a crushing box. A crushing and drying mechanism is arranged on the crushing box for preliminarily crushing and drying the unpurified polyvinyl alcohol. A stirring mechanism is installed on the inner wall of the upper purification box. And a lower purification box is adjustably installed on the frame. The top of the lower purification box is detachably connected to the bottom of the upper purification box. The output end of the stirring mechanism extends into the interior of the lower purification box. The stirring mechanism is used for turning and secondary crushing of the unpurified polyvinyl alcohol.

[0007] Preferably, the crushing and drying mechanism includes two groups of crushing cylinders, which are rotatably connected to the crushing box. A plurality of groups of first crushing knives are evenly arranged on the outer peripheral surface of the crushing cylinder and in the part inside the crushing box. One end of each of the two groups of crushing cylinders extends to the outside of the crushing box and is driven to rotate by a first driving mechanism installed on the outer wall of the crushing box. And a first blower is arranged inside one end of the crushing cylinder, and a heating pipe is arranged inside the crushing cylinder.

[0008] Preferably, the output end of the crushing cylinder is connected to the inner cavity of the lower purification tank through a hose.

[0009] Preferably, an air guiding pipe is rotatably connected to the output end of the crushing cylinder. A U-shaped frame is installed between the two air guiding pipes. The U-shaped frame is connected to the crushing box through bolts. The hose is connected to the output end of the air guiding pipe, and a second blower is arranged on the hose.

[0010] Preferably, serpentine pipes are uniformly arranged in the inner cavity of the lower purification tank. The input end of the serpentine pipe extends to the outside of the lower purification tank and is connected to the hose, and the output end of the serpentine pipe extends to the outside of the air outlet of the lower purification tank.

[0011] Preferably, the stirring mechanism includes an annular seat installed on the inner wall of the upper purification tank. A sliding seat is slidably connected to the annular seat. The sliding seat is driven by a second driving mechanism arranged on the annular seat to slide at any angle along the top end of the annular seat; and a rotating rod driven by the second driving mechanism to rotate and adjust along the annular seat. A plurality of groups of turning blades and second crushing knives are uniformly installed on the outer peripheral surface of the rotating rod.

[0012] Preferably, the second driving mechanism is composed of a motor installed on the sliding seat, a second gear installed on the output end of the motor, and a toothed ring installed on the inner wall of the annular seat. The second gear is meshed with the toothed ring, and the top end of the rotating rod is connected to the bottom end of the second gear.

[0013] Preferably, a chute is opened at the top end of the annular seat. The sliding seat is composed of an L-shaped rod and a T-shaped rod. The motor is installed at the top end of the L-shaped rod, and the T-shaped rod is slidably connected to the chute.

[0014] Preferably, an adjusting mechanism is arranged on the frame. The lower purification tank is arranged on the adjusting mechanism. The adjusting mechanism includes two electric push rods. Mounting seats are installed at the output ends of the two electric push rods; and a rotating shaft is rotatably connected to the mounting seat. The other end of the rotating shaft is connected to the lower purification tank, and the rotating shaft is driven to rotate by a third driving mechanism installed on the mounting seat.

[0015] Preferably, extension seats are installed at the top end of the lower purification tank and the bottom end of the upper purification tank, and sealing rings are arranged on the extension seats.

[0016] Compared with the prior art, the above technical solutions of the present utility model have the following beneficial technical effects: The present utility model is convenient for preliminary crushing and preliminary drying of polyvinyl alcohol through the drying and crushing mechanism, improving the purification efficiency; through the setting of the lower purification tank, the serpentine pipe and the air guiding pipe, it is convenient to recycle hot air to uniformly heat the inside of the lower purification tank. At the same time, through the stirring mechanism, it is convenient to perform secondary crushing on polyvinyl alcohol and uniformly turn it over, further improving the crushing and drying efficiency; through the setting of the adjusting mechanism, it is convenient to drive the lower purification tank and the upper purification tank to close or separate, and at the same time, the lower purification tank can be driven to rotate at an appropriate angle for discharging, further improving the purification efficiency. Brief Description of the Drawings

[0017] Figure 1 It is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 It is a schematic diagram of the connection mode between the upper purification box and the frame of the present utility model;

[0019] Figure 3 It is a schematic diagram of the connection mode between the crushing and drying mechanism and the crushing box of the present utility model;

[0020] Figure 4 It is a schematic diagram of the structure of the stirring mechanism of the present utility model.

[0021] Reference numerals: 1, frame; 2, upper purification box; 201, crushing box; 202, material guiding cover; 3, crushing cylinder; 301, heating pipe; 302, first fan; 303, air guiding pipe; 304, U-shaped frame; 305, second fan; 4, annular seat; 401, sliding seat; 402, second gear; 403, toothed ring; 404, chute; 405, rotating rod; 406, turning blade; 407, second crushing knife; 5, lower purification box; 501, serpentine pipe; 6, electric push rod; 601, mounting seat; 602, rotating shaft. Detailed Description of the Invention

[0022] Embodiment 1

[0023] As Figures 1 to 4 shown, a polyvinyl alcohol purification device proposed by the present utility model includes a frame 1, a stirring mechanism and a lower purification box 5; an upper purification box 2 is arranged at the top of the frame 1, a crushing box 201 is connected to the top of the upper purification box 2, and a crushing and drying mechanism is arranged on the crushing box 201 for preliminarily crushing and drying the unpurified polyvinyl alcohol; the stirring mechanism is installed on the inner wall of the upper purification box 2, a material guiding cover 202 is arranged at the bottom of the crushing box 201, and the material guiding cover 202 corresponds to the stirring mechanism to facilitate guiding the polyvinyl alcohol and avoid interference caused by falling on the annular seat 4; the lower purification box 5 is adjustably installed on the frame 1, the top of the lower purification box 5 is detachably connected to the bottom of the upper purification box 2, and the output end of the stirring mechanism extends into the interior of the lower purification box 5, and the stirring mechanism is used for turning and secondary crushing of the unpurified polyvinyl alcohol.

[0024] Further, the crushing and drying mechanism includes a crushing cylinder 3 and a first fan 302; there are two sets of crushing cylinders 3, and the two sets of crushing cylinders 3 are rotatably connected to the crushing box 201. A plurality of groups of first crushing knives are evenly arranged on the outer peripheral surface of the crushing cylinder 3 and inside the crushing box 201. One end of each of the two sets of crushing cylinders 3 extends outside the crushing box 201 and is driven to rotate by a first driving mechanism installed on the outer wall of the crushing box 201. The first driving mechanism is composed of a motor installed at the top of the upper purification box 2 and a gear transmission component; the first fan 302 is arranged inside one end of the crushing cylinder 3. A dust-proof net corresponding to the first fan 302 is arranged at the end of the crushing cylinder 3 to prevent external dust and other interfering substances from entering the inside of the crushing cylinder 3. A heating pipe 301 is arranged inside the crushing cylinder 3.

[0025] Further, the stirring mechanism includes an annular seat 4 and a rotating rod 405; the annular seat 4 is installed on the inner wall of the upper purification box 2. A sliding seat 401 is slidably connected to the annular seat 4. The sliding seat 401 is driven by a second driving mechanism arranged on the annular seat 4 to slide at any angle along the top of the annular seat 4; the rotating rod 405 is driven by the second driving mechanism to rotate and adjust along the annular seat 4. A plurality of groups of turning blades 406 and second crushing knives 407 are evenly installed on the outer peripheral surface of the rotating rod 405.

[0026] Further, the second driving mechanism is composed of a motor installed on the sliding seat 401, a second gear 402 installed at the output end of the motor, and a toothed ring 403 installed on the inner wall of the annular seat 4. The second gear 402 is meshed with the toothed ring 403. The top end of the rotating rod 405 is connected to the bottom end of the second gear 402; a chute 404 is opened at the top of the annular seat 4. The sliding seat 401 is composed of an L-shaped rod and a T-shaped rod. The motor is installed at the top of the L-shaped rod. The T-shaped rod is slidably connected to the chute 404 to prevent derailment and improve connection stability.

[0027] Further, an adjusting mechanism is arranged on the frame 1, and the lower purification box 5 is arranged on the adjusting mechanism. The adjusting mechanism includes an electric push rod 6 and a rotating shaft 602; there are two sets of electric push rods 6, and mounting seats 601 are installed at the output ends of the two sets of electric push rods 6; the rotating shaft 602 is rotatably connected to the mounting seat 601, and the other end of the rotating shaft 602 is connected to the lower purification box 5. The rotating shaft 602 is driven to rotate by a third driving mechanism installed on the mounting seat 601. The third driving mechanism is composed of a motor installed on the mounting seat 601 and a belt transmission component. The belt transmission component is arranged between the output end of the motor and the rotating shaft 602; extension seats are installed at the top end of the lower purification box 5 and the bottom end of the upper purification box 2, and sealing rings are arranged on the extension seats to facilitate improving the sealing performance at the contact part between the upper purification box 2 and the lower purification box 5 and prevent the leakage of polyvinyl alcohol.

[0028] In this embodiment, the unpurified polyvinyl alcohol is put into the feeding port at the top of the crushing box 201. The first driving mechanism drives the two crushing cylinders 3 to rotate to preliminarily crush the unpurified polyvinyl alcohol. At the same time, the heating pipes 301 are started to heat the crushing cylinders 3, so that the crushed polyvinyl alcohol can be heated and dried simultaneously. The first fan 302 is started to accelerate the transfer of the heat around the heating pipes 301 towards the crushing cylinders 3. The hot air after drying is discharged along the output end of the crushing cylinders 3. The preliminarily crushed polyvinyl alcohol falls into the lower purification box 5 under the guidance of the material guiding cover 202;

[0029] Since the second gear 402 is meshed with the tooth ring 403, when the motor drives the second gear 402 to rotate, it can drive the sliding seat 401 to slide at any angle along the sliding groove 404, and then can drive the rotating rod 405 to rotate and adjust along the annular seat 4. When the motor drives the second gear 402 to rotate, it can drive the rotating rod 405 to rotate itself, which can uniformly stir and crush the polyvinyl alcohol, further improving the crushing efficiency of the polyvinyl alcohol and the purification efficiency;

[0030] After the purification is completed, the output end of the electric push rod 6 retracts to drive the lower purification box 5 away from the upper purification box 2. Then, the third driving mechanism drives the rotating shaft 602 to rotate, and then drives the lower purification box 5 to rotate at an appropriate angle, so that the lower purification box 5 is tilted, which is convenient for pouring out the polyvinyl alcohol in the lower purification box 5 and facilitating discharging.

[0031] Embodiment Two

[0032] As Figure 2 and Figure 3 shown, a polyvinyl alcohol purification device proposed by the present utility model, compared with Embodiment One, the output end of the crushing cylinder 3 is connected to the inner cavity of the lower purification box 5 through a hose, which is convenient for recycling the preliminarily dried hot air into the inner cavity of the lower purification box 5 for reuse, and performing secondary heating and drying on the crushed polyvinyl alcohol.

[0033] Furthermore, the output end of the crushing cylinder 3 is rotatably connected with an air guiding pipe 303. A U-shaped frame 304 is installed between the two air guiding pipes 303. The U-shaped frame 304 is connected to the crushing box 201 through bolts. The hose is connected to the output end of the air guiding pipe 303. A second fan 305 is arranged on the hose to accelerate the transmission of the hot air into the inner cavity of the lower purification box 5, which is convenient for recycling and utilization of the hot air and improving the drying efficiency; when the crushing cylinder 3 rotates, the arrangement of the air guiding pipe 303 will not interfere with the work of the crushing cylinder 3.

[0034] Further, a serpentine tube 501 is evenly arranged in the inner cavity of the lower purification box 5. The input end of the serpentine tube 501 extends to the outside of the lower purification box 5 and is connected to a hose. The output end of the serpentine tube 501 extends to the outside of the air outlet of the lower purification box 5. The hot air travels in the serpentine tube 501, so that the hot air can be evenly distributed in the inner cavity of the lower purification box 5, prolonging the residence time of the hot air, improving the heating efficiency and quality of the lower purification box 5, and enhancing the drying efficiency of polyvinyl alcohol.

[0035] In this embodiment, the hot air discharged from the output end of the crushing cylinder 3 is conveyed into the inner cavity of the lower purification box 5 by the air guiding pipe 303 and the hose, which can enable the recycling of resources. The hot air traveling in the inner cavity can heat the inside of the lower purification box 5. Then, the multi-group turning blades 406 and the second crushing knives 407 rotate to uniformly and comprehensively turn the polyvinyl alcohol while performing secondary crushing, further improving the crushing and drying efficiency of polyvinyl alcohol. After drying, the hot air is discharged from the air outlet on the side wall of the lower purification box 5.

[0036] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made without departing from the gist of the present invention within the scope of knowledge possessed by those skilled in the art to which the present invention pertains.

Claims

1. A polyvinyl alcohol purification device, characterized in that: include A frame (1) is provided with an upper purification box (2) at the top thereof, the upper purification box (2) is connected to a crushing box (201) at the top thereof, and a crushing and drying mechanism is provided on the crushing box (201) for preliminarily crushing and drying unpurified polyvinyl alcohol; A stirring mechanism, which is installed on the inner wall of the upper purification box (2); And a lower purification box (5) which is adjustably mounted on the frame (1), the top of the lower purification box (5) is detachably connected to the bottom of the upper purification box (2), the output end of the stirring mechanism extends to the interior of the lower purification box (5), and the stirring mechanism is used to turn over and secondary crush the unpurified polyvinyl alcohol.

2. A polyvinyl alcohol purification device according to claim 1, characterized in that: Crushing and drying mechanism includes A crushing barrel (3) is provided with two groups, the two groups of crushing barrels (3) are rotatably connected to the crushing box (201), a plurality of groups of first crushing knives are evenly arranged on the outer peripheral surface of the crushing barrel (3) and located inside the crushing box (201), one end of the two groups of crushing barrels (3) extends to the outside of the crushing box (201) and is driven to rotate by a first driving mechanism installed on the outer wall of the crushing box (201); and a first fan (302), which is arranged inside one end of the crushing cylinder (3), and a heating pipe (301) is arranged inside the crushing cylinder (3).

3. A polyvinyl alcohol purification device according to claim 2, characterized in that: The output end of the crushing cylinder (3) is connected to the inner cavity of the lower purification box (5) through a hose.

4. A polyvinyl alcohol purification device according to claim 3, characterized in that: The output end of the crushing cylinder (3) is rotatably connected to an air duct (303), a U-shaped frame (304) is installed between the two groups of air ducts (303), the U-shaped frame (304) is connected to the crushing box (201) through bolts, a hose is connected to the output end of the air duct (303), and a second fan (305) is arranged on the hose.

5. A polyvinyl alcohol purification device according to claim 4, characterized in that: The inner cavity of the lower purification box (5) is evenly provided with serpentine tubes (501), the input end of the serpentine tube (501) extends to the outside of the lower purification box (5) and is connected to a hose, and the output end of the serpentine tube (501) extends to the outside of the exhaust port of the lower purification box (5).

6. A polyvinyl alcohol purification device according to claim 1, characterized in that: Mixing mechanism includes An annular seat (4) is mounted on the inner wall of the upper purification box (2), a slide seat (401) is slidably connected to the annular seat (4), and the slide seat (401) is driven by a second driving mechanism arranged on the annular seat (4) to slide along the top of the annular seat (4) at any angle; And a rotating rod (405) which is driven by a second driving mechanism to rotate and adjust along the annular seat (4), and a plurality of groups of turning leaves (406) and a second crushing knife (407) are evenly installed on the outer peripheral surface of the rotating rod (405).

7. A polyvinyl alcohol purification device according to claim 6, characterized in that: The second driving mechanism is composed of a motor mounted on a slide seat (401), a second gear (402) mounted on an output end of the motor, and a gear ring (403) mounted on an inner wall of an annular seat (4); the second gear (402) is meshedly connected with the gear ring (403), and the top end of a rotating rod (405) is connected with the bottom end of the second gear (402).

8. A polyvinyl alcohol purification device according to claim 7, characterized in that: A slide groove (404) is provided at the top of the annular seat (4), the slide seat (401) is composed of an L-shaped rod and a T-shaped rod, the motor is installed at the top of the L-shaped rod, and the T-shaped rod is slidably connected to the slide groove (404).

9. A polyvinyl alcohol purification device according to claim 1, characterized in that: The frame (1) is provided with an adjustment mechanism, and the lower purification box (5) is arranged on the adjustment mechanism. The adjustment mechanism includes The electric push rod (6) is provided in two groups, and the output ends of the two groups of electric push rods (6) are both equipped with mounting seats (601); And a rotating shaft (602) which is rotatably connected to the mounting base (601), the other end of the rotating shaft (602) is connected to the lower purification box (5), and the rotating shaft (602) is driven to rotate by a third driving mechanism installed on the mounting base (601).

10. A polyvinyl alcohol purification device according to claim 9, characterized in that: The top end of the lower purification box (5) and the bottom end of the upper purification box (2) are both equipped with extension seats, and sealing rings are arranged on the extension seats.

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