Feeding device of esterification reaction kettle

Abstract

The utility model discloses a feeding device of an esterification reaction kettle, which relates to the technical field of polyester production equipment and comprises a reaction kettle, the top of the reaction kettle is fixedly connected with a feeding hopper, the right side of the outer wall of the feeding hopper is fixedly connected with a U-shaped frame plate, and the inner wall of the U-shaped frame plate is provided with a conveying driving mechanism. A plurality of supporting legs are fixedly connected to the bottom of the supporting ring in an annular array mode, a feeding pipe is fixedly connected to the bottom of the feeding hopper, a connecting plate is arranged at the bottom of the feeding pipe, stirring mechanisms are arranged on the left side and the right side of the top of the connecting plate respectively, and a flow guide disc is fixedly connected to the bottom of the inner wall of the reaction kettle. And the middle side of the bottom of the reaction kettle is fixedly connected with a discharge pipe. The driving motor drives the rotating rod to rotate, the fan-shaped groove II rotates to the bottom of the fan-shaped groove I, part of polyester is conveyed, and then the polyester in the feeding pipe is conveyed to the bottom of the reaction kettle through the spiral blade.

Description

Technical Field

[0001] The utility model relates to the technical field of polyester production equipment, in particular to a feeding device for an esterification reaction kettle. Background Art

[0002] Esterification is a process in which acid and alcohol undergo condensation reaction to produce esters through acid catalysis or enzyme catalysis. The esterification reactor is a device that adds acid and alcohol into the reactor for mixing and reaction at a specific temperature and pressure. In the polyester production process, PET raw materials and alcohol are sent to the esterification reactor together for esterification reaction, and then after the pre-shrinking reactor and the final shrinking reactor, the PBT finished product is obtained. The existing technology has the following problems:

[0003] The feeding pipe used in the feeding device of the existing esterification reactor cannot be disassembled. Too much feeding at one time can easily cause blockage of the feeding pipe, resulting in the inability to transport the polyester into the reactor, thereby affecting the use effect of the device. Secondly, after the polyester is transported to the reactor, it is not mixed sufficiently, resulting in a slow reaction, thereby reducing the reaction efficiency. Utility Model Content

[0004] The utility model provides a feeding device for an esterification reaction kettle to solve the problems existing in the above-mentioned background technology.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A feeding device for an esterification reactor comprises a reactor, wherein a feeding hopper is fixedly connected to the top of the reactor, a U-shaped frame plate is fixedly connected to the right side of the outer wall of the feeding hopper, a conveying drive mechanism is arranged on the inner wall of the U-shaped frame plate, and the outer wall of the conveying drive mechanism passes through the interior of the reactor, a supporting ring is fixedly connected to the bottom of the outer wall of the reactor, a plurality of supporting legs are fixedly connected to the bottom annular array of the supporting ring, a feeding pipe is fixedly connected to the bottom of the feeding hopper, the outer wall of the feeding pipe passes through the interior of the reactor and is fixedly connected, a connecting plate is arranged at the bottom of the feeding pipe, stirring mechanisms are respectively arranged on the left and right sides of the top of the connecting plate, a guide plate is fixedly connected to the bottom of the inner wall of the reactor, a discharge pipe is fixedly connected to the middle side of the bottom of the reactor, the interior of the discharge pipe is communicated with the interior of the reactor, and a sealing cover is movably connected to the bottom of the outer wall of the discharge pipe.

[0007] A further improvement of the technical solution of the utility model is that the bottom outer wall of the conveying drive mechanism penetrates the upper and lower ends of the feeding pipe, and the stirring mechanism is arranged on the left and right sides of the outer wall of the feeding pipe.

[0008] A further improvement of the technical solution of the utility model lies in that: the conveying drive mechanism comprises a driving motor, the output shaft of the driving motor is fixedly connected with a pulley 1, a pulley 2 is horizontally arranged on the left side of the pulley 1, the outer walls of the pulley 1 and the pulley 2 are sleeved with a belt, the bottom of the pulley 2 is fixedly connected with a rotating rod, the top of the outer wall of the rotating rod is fixedly connected with a scraper 1, the bottom of the scraper 1 is provided with a material distribution disk, the outer wall of the rotating rod passes through the upper and lower ends of the material distribution disk, the bottom of the material distribution disk is provided with a rotating disk, the bottom of the rotating disk is provided with a scraper 2, and the bottom of the outer wall of the rotating rod is fixedly connected with a spiral blade.

[0009] A further improvement of the technical solution of the utility model is that the outer wall of the material distribution plate is fixedly connected to the inner wall of the feeding hopper, the middle part of the turntable is fixedly connected to the outer wall of the rotating rod, the end of the scraper 2 away from the inner wall of the feeding hopper is fixedly connected to the outer wall of the rotating rod, and the end of the scraper 2 away from the rotating rod overlaps the inner wall of the feeding hopper.

[0010] A further improvement of the technical solution of the utility model is that: the scraper 1 includes a fixed ring, the outside of the fixed ring is fixedly connected to an L-shaped plate, the end of the L-shaped plate away from the fixed ring is provided with a scraper strip, the top annular array of the distribution plate is provided with four fan-shaped grooves 1 that pass through from top to bottom, the top of the turntable is provided with a fan-shaped groove 2 that is the same size as the fan-shaped groove 1 and passes through from top to bottom, and the outer wall of the turntable close to the fan-shaped groove 2 is fixedly connected with a positioning ring.

[0011] A further improvement of the technical solution of the utility model is that the interior of the fan-shaped groove one is connected with the interior of the fan-shaped groove two, the L-shaped plate is arranged on a side close to the fan-shaped groove two, and the outer wall of the scraper is overlapped with the inner wall of the feeding hopper.

[0012] A further improvement of the technical solution of the utility model lies in that: the stirring mechanism includes a connecting rod, and the upper and lower sides of the outer wall of the connecting rod are respectively fixedly connected with fixed tubes, the outer walls of the two fixed tubes are provided with slide grooves, the outer walls of the two fixed tubes are provided with fixed rings, the inner walls of the fixed rings are rollingly connected with a plurality of balls in a circular array, the outer walls of the plurality of balls are rollingly connected with the inner wall of the slide groove, the outer walls of the two fixed rings are respectively fixedly connected with stirring paddles on the left and right sides, and the front rectangular arrays of the two stirring paddles are provided with a plurality of connecting holes that pass through from front to back.

[0013] A further improvement of the technical solution of the utility model is that the bottom of the connecting rod is fixedly connected to the top of the connecting plate.

[0014] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0015] The utility model provides a feeding device for an esterification reactor, which adopts the cooperation among a feeding hopper, a pulley one, a pulley two, a belt, a rotating rod, a scraper one, a distribution disk, a rotating disk, a scraper two, a spiral blade and a feeding pipe, and drives a driving motor to rotate the rotating rod through the cooperation of the pulley one and the pulley two, so that the scraper one and the rotating disk rotate along the upper and lower sides of the distribution disk, rotate to the bottom of the fan-shaped groove one through the fan-shaped groove two, and transport a part of the polyester, and then transport the polyester in the feeding pipe to the bottom of the reactor through the spiral blade to prevent clogging. At the same time, the scraper one and the scraper two further scrape off the residual polyester in the feeding hopper to avoid waste, and solves the problem that the feeding pipe used for the feeding device in the existing esterification reactor cannot be disassembled, and too much feeding at one time is easy to cause clogging of the feeding pipe, resulting in the polyester being unable to be transported into the reactor, thereby affecting the use effect of the device, and achieves the beneficial effect of batch conveying of polyester, preventing clogging of the feeding pipe to a certain extent, and improving the practicality of the device.

[0016] The utility model provides a feeding device for an esterification reaction kettle, which adopts the cooperation among a connecting plate, a connecting rod, a fixed tube, a ball, a fixed sleeve, a stirring blade and a connecting hole, and drives the connecting plate to rotate through a rotating rod, so that the stirring blades on both sides of the connecting plate rotate, and the ball drives the two stirring blades to rotate along the connecting rod while rotating, so as to fully stir the polyester, solves the problem that after the polyester is transported to the reactor, the mixing is not sufficient, resulting in a slow reaction, thereby reducing the reaction efficiency, and achieves the beneficial effect of effectively mixing the polyester and accelerating the reaction efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a three-dimensional structural schematic diagram of the feeding device of the utility model;

[0018] Figure 2 It is a schematic cross-sectional view of the three-dimensional structure of the feeding device of the esterification reaction kettle of the utility model;

[0019] Figure 3 It is a three-dimensional structural schematic diagram of the conveying drive mechanism of the utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the material feeding component of the utility model

[0021] Figure 5 It is a schematic cross-sectional view of the three-dimensional structure of the stirring mechanism of the utility model.

[0022] In the figure: 1. reactor; 2. feeding hopper; 3. U-shaped frame plate; 4. conveying drive mechanism; 40. driving motor; 41. pulley 1; 42. pulley 2; 43. belt; 44. rotating rod; 45. scraper 1; 450. fixing ring; 451. L-shaped plate; 452. scraper bar; 46. material distribution plate; 460. fan-shaped groove 1; 47. rotating plate; 470. fan-shaped groove 2; 471. positioning ring; 48. scraper 2; 49. spiral blade; 5. supporting ring; 6. supporting leg; 7. feeding pipe; 8. connecting plate; 9. stirring mechanism; 91. connecting rod; 92. fixing pipe; 920. slide groove; 93. ball; 94. fixing ring; 95. stirring blade; 950. connecting hole; 10. guide plate; 11. discharge pipe; 12. sealing cover. DETAILED DESCRIPTION

[0023] In order to make the technical means, creative features, objectives and effects of the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods:

[0024] like Figure 1 As shown, the utility model provides a feeding device for an esterification reactor, comprising a reactor 1, a feeding hopper 2 is fixedly connected to the top of the reactor 1, a U-shaped frame plate 3 is fixedly connected to the right side of the outer wall of the feeding hopper 2, a conveying drive mechanism 4 is arranged on the inner wall of the U-shaped frame plate 3, and the outer wall of the conveying drive mechanism 4 penetrates into the interior of the reactor 1, a support ring 5 is fixedly connected to the bottom of the outer wall of the reactor 1, a plurality of support legs 6 are fixedly connected to the bottom of the annular array of the support ring 5, a feeding pipe 7 is fixedly connected to the bottom of the feeding hopper 2, the outer wall of the feeding pipe 7 penetrates into the interior of the reactor 1 and is fixedly connected, a connecting plate 8 is arranged at the bottom of the feeding pipe 7, and stirring mechanisms 9 are respectively arranged on the left and right sides of the top of the connecting plate 8, a guide plate 10 is fixedly connected to the bottom of the inner wall of the reactor 1, a discharge pipe 11 is fixedly connected to the middle side of the bottom of the reactor 1, the interior of the discharge pipe 11 is connected to the interior of the reactor 1, and a sealing cover 12 is movably connected to the bottom of the outer wall of the discharge pipe 11;

[0025] A feeding hopper 2, a conveying drive mechanism 4, a feeding pipe 7, a connecting plate 8, a stirring mechanism 9 and a guide plate 10 are provided. Through the cooperation between the dividing plate 46 and the turntable 47, when the fan-shaped groove 2 470 on the turntable 47 rotates to the fan-shaped groove 1 460, the polyester in the feeding hopper 2 is conveyed to the feeding pipe 7. At the same time, the scraper bar 452 and the scraper 2 48 contact the tube wall of the feeding hopper 2, so that the polyester attached to the tube wall of the feeding hopper 2 is scraped off, so that the polyester is conveyed into the feeding pipe 7, and is rotated and conveyed into the reactor 1 by the spiral blade 49, and then the polyester is fully and evenly mixed by the stirring blade 95 in the stirring mechanism 9.

[0026] like Figure 2As shown, the utility model provides a technical solution for the feeding device of the esterification reaction kettle: the bottom outer wall of the conveying drive mechanism 4 passes through the upper and lower ends of the feeding pipe 7, and the stirring mechanism 9 is arranged on the left and right sides of the outer wall of the feeding pipe 7 to orderly convey and mix the polyester.

[0027] like Figure 3-4 As shown, the utility model provides a technical solution for a feeding device of an esterification reaction kettle: a conveying drive mechanism 4 includes a driving motor 40, the output shaft of the driving motor 40 is fixedly connected to a pulley 1 41, a pulley 2 42 is horizontally arranged on the left side of the pulley 1 41, a belt 43 is sleeved on the outer walls of the pulley 1 41 and the pulley 2 42, and a rotating rod 44 is fixedly connected to the bottom of the pulley 2 42, which is respectively sleeved on the pulley 1 41 and the pulley 2 42 through the belt 43. When the output shaft of the driving motor 40 drives the pulley 1 41 to rotate, the belt 43 can be used to rotate the pulley 2 4 2 is rotated simultaneously, a scraper 45 is fixedly connected to the top of the outer wall of the rotating rod 44, a material distribution plate 46 is arranged at the bottom of the scraper 45, the outer wall of the rotating rod 44 passes through the upper and lower ends of the material distribution plate 46, a rotating disk 47 is arranged at the bottom of the material distribution plate 46, the scraper 45 and the rotating disk 47 are arranged on the upper and lower surfaces of the material distribution plate 46 respectively, and a scraper 2 48 is arranged at the bottom of the rotating disk 47, a spiral blade 49 is fixedly connected to the bottom of the outer wall of the rotating rod 44, and the spiral blade 49 is arranged in the feeding pipe 7, so as to facilitate the rotation and transportation of polyester, the outer wall of the material distribution plate 46 and the inner wall of the feeding hopper 2 The middle part of the rotating disk 47 is fixedly connected to the outer wall of the rotating rod 44, the end of the scraper 2 48 away from the inner wall of the hopper 2 is fixedly connected to the outer wall of the rotating rod 44, the end of the scraper 2 48 away from the rotating rod 44 overlaps the inner wall of the hopper 2, and the scraper 1 45 includes a fixing ring 450, the outer part of the fixing ring 450 is fixedly connected to the L-shaped plate 451, and the end of the L-shaped plate 451 away from the fixing ring 450 is provided with a scraper strip 452, which contacts the inner wall of the hopper 2 through the scraper strip 452 and the scraper 2 48, so as to facilitate the scraping of the attached polyester, and the top of the material distribution plate 46 The upper annular array is provided with four fan-shaped grooves 460 which are connected vertically, and the top of the turntable 47 is provided with a fan-shaped groove 470 which is the same size as the fan-shaped groove 460 and is connected vertically. A positioning ring 471 is fixedly connected to the outer wall of the turntable 47 near the fan-shaped groove 470, and the interior of the fan-shaped groove 460 is connected with the interior of the fan-shaped groove 470. The fan-shaped groove 470 rotates to the bottom of the fan-shaped groove 460, so as to transport the polyester on the feeding hopper 2. The L-shaped plate 451 is arranged on the side close to the fan-shaped groove 470, and the outer wall of the scraper 452 overlaps the inner wall of the feeding hopper 2.

[0028] like Figure 5As shown, the utility model provides a technical solution for a feeding device of an esterification reactor: a stirring mechanism 9 comprises a connecting rod 91, and a fixing tube 92 is fixedly connected to the upper and lower sides of the outer wall of the connecting rod 91 respectively, and a slide groove 920 is provided on the outer walls of the two fixing tubes 92, and a fixing collar 94 is provided on the outer walls of the two fixing tubes 92, and a plurality of balls 93 are rollingly connected to the inner wall of the slide groove 920 in an annular array on the inner wall of the fixing collar 94, and the outer walls of the plurality of balls 93 are rollingly connected to the inner wall of the slide groove 920, and stirring blades 95 are fixedly connected to the left and right sides of the outer walls of the two fixing collars 94 respectively, and a plurality of connecting holes 950 are provided in the front rectangular array of the two stirring blades 95, and the surface of the stirring blade 95 is hit by the polyester, so that the balls 93 roll along the inner wall of the slide groove 920, thereby driving the two stirring blades 95 to rotate, and the polyester is dispersed and stirred evenly, and the bottom of the connecting rod 91 is fixedly connected to the top of the connecting plate 8.

[0029] The working principle of the feeding device of the esterification reactor is described in detail below.

[0030] like Figure 1-5 As shown, when in use, first, polyester is put into the hopper 2, and the left and right inner walls of the belt 43 are respectively put on the pulley 1 41 and the pulley 2 42, and the driving motor 40 is started. The output shaft of the driving motor 40 drives the pulley 1 41 to rotate, and the pulley 2 42 is simultaneously driven to rotate through the belt 43, thereby rotating the rotating rod 44, so that the scraper 1 45 and the rotating disk 47 on the rotating rod 44 rotate along the upper and lower surfaces of the dividing disk 46 respectively, when the fan-shaped groove 2 470 in the rotating disk 47 rotates to the fan-shaped groove 1 460 on the dividing disk 46, at the same time, the scraper strip 452 in the scraper 1 45 scrapes the material on the hopper 2, and the scraper 2 48 contacts the tube wall of the hopper 2, so that when the rotating rod 44 rotates, the scraper 2 48 scrapes off the polyester attached to the tube wall. It is convenient to transport the polyester to the feeding pipe 7, and the spiral blade 49 rotates the polyester and transports it to the inside of the reactor 1 in sequence. At the same time, the rotating rod 44 drives the connecting plate 8 to rotate, so that the stirring mechanisms 9 on both sides of the connecting plate 8 rotate in the reactor 1, thereby stirring the polyester in the reactor 1, and the polyester collides with the two stirring blades 95 on the stirring mechanism 9, thereby driving the ball 93 to roll along the slide groove 920 on the outer wall of the fixed tube 92, so that the two stirring blades 95 are driven to rotate along the connecting rod 91, so that the polyester is fully stirred and broken up, and the polyester is further mixed evenly, thereby increasing the reaction rate. After the reaction is completed, the guide plate 10 has a certain slope, which can facilitate the rapid discharge of the reacted polyester through the discharge pipe 11.

[0031] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not deviate from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A feeding device for an esterification reactor, comprising a reactor (1), characterized in that: The top of the reactor (1) is fixedly connected to a feeding hopper (2), the right side of the outer wall of the feeding hopper (2) is fixedly connected to a U-shaped frame plate (3), the inner wall of the U-shaped frame plate (3) is provided with a conveying drive mechanism (4), and the outer wall of the conveying drive mechanism (4) penetrates into the interior of the reactor (1), the bottom of the outer wall of the reactor (1) is fixedly connected to a support ring (5), the bottom of the support ring (5) is fixedly connected to a plurality of support legs (6), the bottom of the feeding hopper (2) is fixedly connected to a feeding pipe (7), and the The outer wall of the feeding pipe (7) penetrates into the interior of the reactor (1) and is fixedly connected thereto; a connecting plate (8) is provided at the bottom of the feeding pipe (7); stirring mechanisms (9) are provided on the left and right sides of the top of the connecting plate (8); a guide plate (10) is fixedly connected to the bottom of the inner wall of the reactor (1); a discharge pipe (11) is fixedly connected to the middle side of the bottom of the reactor (1); the interior of the discharge pipe (11) is connected to the interior of the reactor (1); and a sealing cover (12) is movably connected to the bottom of the outer wall of the discharge pipe (11).

2. The feeding device of the esterification reaction kettle according to claim 1, characterized in that: The bottom outer wall of the conveying drive mechanism (4) penetrates the upper and lower ends of the feeding pipe (7), and the stirring mechanism (9) is arranged on the left and right sides of the outer wall of the feeding pipe (7).

3. The feeding device of the esterification reaction kettle according to claim 1, characterized in that: The conveying drive mechanism (4) comprises a driving motor (40), the output shaft of the driving motor (40) is fixedly connected to a pulley 1 (41), a pulley 2 (42) is horizontally arranged on the left side of the pulley 1 (41), the outer walls of the pulley 1 (41) and the pulley 2 (42) are sleeved with a belt (43), the bottom of the pulley 2 (42) is fixedly connected to a rotating rod (44), the top of the outer wall of the rotating rod (44) is fixedly connected to a scraper 1 (45), the bottom of the scraper 1 (45) is provided with a material distribution disc (46), the outer wall of the rotating rod (44) passes through the upper and lower ends of the material distribution disc (46), the bottom of the material distribution disc (46) is provided with a rotating disc (47), the bottom of the rotating disc (47) is provided with a scraper 2 (48), and the bottom of the outer wall of the rotating rod (44) is fixedly connected to a spiral blade (49).

4. The feeding device of the esterification reaction kettle according to claim 3, characterized in that: The outer wall of the material distribution plate (46) is fixedly connected to the inner wall of the feeding hopper (2), the middle part of the rotating plate (47) is fixedly connected to the outer wall of the rotating rod (44), the end of the second scraper (48) away from the inner wall of the feeding hopper (2) is fixedly connected to the outer wall of the rotating rod (44), and the end of the second scraper (48) away from the rotating rod (44) overlaps the inner wall of the feeding hopper (2).

5. The feeding device of the esterification reaction kettle according to claim 3, characterized in that: The scraper plate 1 (45) comprises a fixing ring (450), the outside of the fixing ring (450) is fixedly connected to an L-shaped plate (451), and a scraper strip (452) is arranged at one end of the L-shaped plate (451) away from the fixing ring (450). The top of the material distribution plate (46) is provided with four fan-shaped grooves 1 (460) that pass through from top to bottom in an annular array. The top of the rotating disk (47) is provided with a fan-shaped groove 2 (470) that is the same size as the fan-shaped groove 1 (460) and passes through from top to bottom. The outer wall of the rotating disk (47) close to the fan-shaped groove 2 (470) is fixedly connected to a positioning ring (471).

6. The feeding device of the esterification reaction kettle according to claim 5, characterized in that: The interior of the first fan-shaped groove (460) is connected to the interior of the second fan-shaped groove (470), the L-shaped plate (451) is arranged on a side close to the second fan-shaped groove (470), and the outer wall of the scraper (452) overlaps the inner wall of the feeding hopper (2).

7. The feeding device of the esterification reaction kettle according to claim 1, characterized in that: The stirring mechanism (9) comprises a connecting rod (91), wherein the upper and lower sides of the outer wall of the connecting rod (91) are respectively fixedly connected to a fixing tube (92), the outer walls of the two fixing tubes (92) are each provided with a slide groove (920), the outer walls of the two fixing tubes (92) are provided with a fixing collar (94), the inner wall of the fixing collar (94) is rollingly connected to a plurality of balls (93) in an annular array, the outer walls of the plurality of balls (93) are rollingly connected to the inner wall of the slide groove (920), the outer walls of the two fixing collars (94) are respectively fixedly connected to a stirring blade (95) on the left and right sides, and the front sides of the two stirring blades (95) are provided with a plurality of connecting holes (950) that pass through from front to back in a rectangular array.

8. The feeding device of the esterification reaction kettle according to claim 7, characterized in that: The bottom of the connecting rod (91) is fixedly connected to the top of the connecting plate (8).

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