Filtering and stirring device for producing DOTP

Abstract

The utility model discloses a filtering and stirring device for producing DOTP (dioctyl terephthalate), which belongs to the technical field of stirring devices and comprises a stirring drum, a cylinder is rotatably mounted in the stirring drum, a spiral blade is fixedly mounted in the cylinder, a filter drum is detachably mounted at the top of the outer side of the stirring drum, and a filter screen is arranged in the filter drum; the driving mechanism comprises a driving motor, a rack, a transverse shaft, a stirring shaft and a rotating drum, a rotating arm is fixedly connected to an output shaft of the driving motor, a transverse plate is fixedly installed at the bottom of the rack, a side frame is fixedly connected to one side of the transverse plate, and a sliding frame is slidably connected to the outer side of the side frame in a sleeving mode; a round rod is fixedly connected to one side of the sliding frame, and the rotating arm is rotationally connected to the outer side of the round rod in a sleeving mode. The driving mechanism can drive the stirring blades and the spiral blades to rotate in a reciprocating manner, so that the mixing speed is increased, materials are prevented from sinking to the bottom, and the reaction speed and the filtering speed are increased.

Description

Technical Field

[0001] The utility model relates to the technical field of stirring devices, in particular to a filtering stirring device for producing DOTP. Background Art

[0002] Dioctyl terephthalate (DOTP) is a main plasticizer for polyvinyl chloride (PVC) plastics with excellent performance. Compared with the commonly used diisooctyl phthalate (DOP), it has the following characteristics:

[0003] Heat resistance: DOTP has better heat resistance than DOP, which enables it to maintain stable performance in high temperature environments.

[0004] Cold resistance: DOTP has good cold resistance and is suitable for low temperature environments.

[0005] Low volatility: DOTP has low volatility, which helps maintain the stability and durability of the product.

[0006] Anti-extraction performance: DOTP has good anti-extraction performance and can resist erosion by substances such as oil.

[0007] Softness: DOTP can give PVC products good softness and improve their comfort in use.

[0008] Electrical insulation: DOTP has excellent electrical insulation properties and is suitable for cable materials and other PVC soft products that require high insulation properties.

[0009] Environmental protection: DOTP does not contain phthalates and is not within the scope of the 16 phthalate-containing plasticizers restricted for use in the EU and other countries. Therefore, it is an environmentally friendly plasticizer.

[0010] Compatibility: DOTP has excellent compatibility and can be used for plasticization of various materials such as acrylonitrile derivatives, polyvinyl butyral, nitrile rubber, and cellulose nitrate.

[0011] In summary, dioctyl terephthalate (DOTP) has become an ideal choice as the main plasticizer for polyvinyl chloride (PVC) plastics due to its excellent heat resistance, cold resistance, low volatility, anti-extraction, flexibility, electrical insulation and environmental protection.

[0012] Since dimethyl terephthalate is a monomer of polyester and is a colorless orthorhombic crystal, and octanol is a colorless transparent oily liquid, dimethyl terephthalate residue will appear in the process of the two reacting to produce DOTP, and the dimethyl terephthalate residue needs to be filtered out through a filter.

[0013] The current filtering and stirring device for producing DOTP has a relatively simple stirring mode, which makes the material easy to precipitate and clog the filter, affecting the filtration rate and being unfavorable for the reaction of the material and the subsequent cleaning of the filter. Therefore, we propose a filtering and stirring device for producing DOTP to solve this problem. Utility Model Content

[0014] The purpose of the utility model is to provide a filtering and stirring device for producing DOTP to solve the problems raised in the above background technology.

[0015] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0016] A filtering and stirring device for producing DOTP, comprising:

[0017] A mixing drum, wherein a cylinder is rotatably mounted inside the mixing drum, a spiral blade is fixedly mounted inside the cylinder, a filter drum is detachably mounted on the top of the outer side of the mixing drum, and a filter screen is arranged inside the filter drum;

[0018] The driving mechanism comprises a driving motor, a rack, a transverse axis, a stirring shaft and a rotating drum, a rotating arm is fixedly connected to the output shaft of the driving motor, a transverse plate is fixedly installed at the bottom of the rack, a side frame is fixedly connected to one side of the transverse plate, a sliding frame is slidably sleeved on the outer side of the side frame, a round rod is fixedly connected to one side of the sliding frame, the rotating arm is rotatably sleeved on the outer side of the round rod, and a transmission gear and a third bevel gear are respectively fixedly installed at both ends of the transverse axis, a first bevel gear is fixedly connected to the top end of the stirring shaft, a second bevel gear is fixedly installed on the outer side of the rotating drum, the third bevel gear is meshed with the first bevel gear and the second bevel gear, a plurality of stirring blades are fixedly installed on the outer side of the stirring shaft, and a plurality of connecting rods are fixedly connected between the rotating drum and the cylinder.

[0019] Preferably, a guide rail is fixedly mounted on the top of the mixing drum, and the transverse plate is slidably sleeved on the outer side of the guide rail.

[0020] Preferably, the bottom of the driving motor is fixedly connected to a support rod, and the support rod is fixedly mounted on the top of the mixing drum;

[0021] A fixing plate is fixedly installed on the top of the mixing drum, and the fixing plate is rotatably sleeved on the outer side of the horizontal axis. The rotating drum is rotatably connected to the top inner wall of the mixing drum, and the stirring shaft is rotatably connected in the rotating drum.

[0022] Preferably, the filter screen movably abuts against the bottom of the mixing drum, and a limiting ring is fixedly installed inside the filter drum, and the limiting ring movably abuts against the bottom of the filter screen.

[0023] Preferably, a support frame is fixedly installed on the outer side of the mixing drum, and a rotating ring is rotatably sleeved on the outer side of the mixing drum, the rotating ring is movably abutted against the top of the support frame, and clamping plates are fixedly installed on both sides of the bottom of the rotating ring, and clamping grooves are opened on both sides of the filter drum, and the two clamping plates are movably clamped in the corresponding clamping grooves, and a notch is opened on the top inner wall of the clamping groove;

[0024] Both sides of the top of the rotating ring are threadedly connected with fastening bolts, and both sides of the top of the supporting frame are provided with slots, and the two fastening bolts are movably inserted into the corresponding slots respectively.

[0025] Preferably, the top of the mixing cylinder is connected to a feed hopper, and the bottom of the filter cylinder is connected to a discharge pipe.

[0026] Preferably, a plurality of limit strips are fixedly mounted on the outer side of the mixing drum, and the filter drum is movably sleeved on the outer side of the limit strips.

[0027] In the utility model, a filtering and stirring device for producing DOTP is described, wherein the mixing drum is fed with materials through a feed hopper, and the material is filtered through a filter screen, and the rotating arm is driven to rotate by starting a driving motor, and the rotating arm drives the cross plate and the rack to move back and forth by cooperating with the round rod, the sliding frame and the side frame, and the rack drives the transmission gear to rotate back and forth by meshing with the transmission gear, and the transmission gear drives the third bevel gear to rotate back and forth through the cross shaft, and the third bevel gear drives the stirring shaft and the rotating drum to rotate back and forth by meshing with the first bevel gear and the second bevel gear, and the stirring shaft drives the multiple stirring blades to rotate back and forth to achieve stirring of the material and improve the reaction rate, and the rotating drum drives the cylinder and the spiral blades to rotate back and forth through the connecting rod, thereby realizing the upward and downward flipping of the material, avoiding the material from sinking to the bottom, and ensuring the filtering rate;

[0028] In the utility model, the filtering and stirring device for producing DOTP, after the filtering is completed, the fastening bolt is rotated to make the fastening bolt disengage from the slot, and then the rotating ring is rotated to drive the two clamping plates to perform circular motion, and the clamping plates are aligned with the notch to release the fixation of the filter cartridge, and then the filter screen is moved downward and removed to facilitate the cleaning of the filter residue;

[0029] The utility model has a reasonable structural design, and the arranged driving mechanism can drive the stirring blade and the spiral blade to rotate back and forth, thereby improving the mixing rate, preventing the material from sinking to the bottom, and improving the reaction speed and the filtration rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the three-dimensional structure of a filtering and stirring device for producing DOTP proposed by the utility model;

[0031] Figure 2 This is a schematic cross-sectional view of a filtering and stirring device for producing DOTP proposed by the utility model;

[0032] Figure 3 for Figure 2 A partial enlarged view of part A;

[0033] Figure 4 for Figure 2 A partial enlarged view of part B;

[0034] Figure 5 The figure is a three-dimensional structural schematic diagram of the driving mechanism proposed by the utility model.

[0035] In the figure: 1, mixing drum; 101, feed hopper; 2, driving mechanism; 201, first bevel gear; 202, second bevel gear; 203, third bevel gear; 204, mixing shaft; 205, rotating drum; 206, horizontal axis; 207, transmission gear; 208, rack; 209, rotating arm; 210, driving motor; 211, side frame; 212, horizontal plate; 213, guide rail; 214, round rod; 215, fixed plate; 216, sliding frame; 3, filter drum; 4, supporting frame; 5, rotating ring; 6, clamping plate; 7, fastening bolt; 8, cylinder; 801, spiral blade; 802, connecting rod; 9, limit strip; 10, filter screen; 11, limit ring. DETAILED DESCRIPTION

[0036] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0037] Reference Figure 1-5 , a filtering and stirring device for producing DOTP, comprising:

[0038] A mixing drum 1, a cylinder 8 is rotatably mounted inside the mixing drum 1, a spiral blade 801 is fixedly mounted inside the cylinder 8, a filter drum 3 is detachably mounted on the top of the outer side of the mixing drum 1, and a filter screen 10 is arranged inside the filter drum 3;

[0039] The driving mechanism 2 includes a driving motor 210, a rack 208, a horizontal shaft 206, a stirring shaft 204 and a rotating drum 205. A rotating arm 209 is fixedly connected to the output shaft of the driving motor 210. A horizontal plate 212 is fixedly installed at the bottom of the rack 208. A side frame 211 is fixedly connected to one side of the horizontal plate 212. A sliding frame 216 is slidably sleeved on the outer side of the side frame 211. A round rod 214 is fixedly connected to one side of the sliding frame 216. The rotating arm 209 is rotatably sleeved on the round rod. 214, and the two ends of the horizontal axis 206 are respectively fixedly installed with a transmission gear 207 and a third bevel gear 203, the top of the stirring shaft 204 is fixedly connected with the first bevel gear 201, the outer side of the rotating drum 205 is fixedly installed with the second bevel gear 202, the third bevel gear 203 is meshed with the first bevel gear 201 and the second bevel gear 202, a plurality of stirring blades are fixedly installed on the outer side of the stirring shaft 204, and a plurality of connecting rods 802 are fixedly connected between the rotating drum 205 and the cylinder 8.

[0040] In this embodiment, a guide rail 213 is fixedly installed on the top of the mixing drum 1 , and the transverse plate 212 is slidably sleeved on the outer side of the guide rail 213 , thereby guiding the transverse plate 212 .

[0041] In this embodiment, the bottom of the driving motor 210 is fixedly connected to a support rod, and the support rod is fixedly installed on the top of the mixing drum 1 to support and fix the driving motor 210; the top of the mixing drum 1 is fixedly installed with a fixing plate 215, and the fixing plate 215 is rotatably sleeved on the outside of the horizontal axis 206, the rotating drum 205 is rotatably connected to the top inner wall of the mixing drum 1, and the stirring shaft 204 is rotatably connected inside the rotating drum 205.

[0042] In this embodiment, the filter screen 10 movably abuts against the bottom of the mixing drum 1 , and a limiting ring 11 is fixedly installed inside the filter drum 3 , and the limiting ring 11 movably abuts against the bottom of the filter screen 10 .

[0043] In this embodiment, a support frame 4 is fixedly installed on the outer side of the mixing drum 1, and a rotating ring 5 is rotatably sleeved on the outer side of the mixing drum 1, the rotating ring 5 is movably abutted against the top of the support frame 4, and clamping plates 6 are fixedly installed on both sides of the bottom of the rotating ring 5, and clamping grooves are opened on both sides of the filter drum 3, and the two clamping plates 6 are movably clamped in the corresponding clamping grooves, and a notch is opened on the top inner wall of the clamping groove;

[0044] Both sides of the top of the rotating ring 5 are threadedly connected with fastening bolts 7, and both sides of the top of the support frame 4 are provided with slots. The two fastening bolts 7 are movably inserted into the corresponding slots respectively, so as to lock the rotating ring 5. The top of the mixing drum 1 is connected to the feed hopper 101, and the bottom of the filter drum 3 is connected to the discharge pipe to facilitate feeding and discharging.

[0045] In this embodiment, a plurality of limit bars 9 are fixedly mounted on the outer side of the mixing drum 1 , and the filter drum 3 is movably sleeved on the outer side of the limit bars 9 to prevent the filter drum 3 and the mixing drum 1 from rotating.

[0046] In this embodiment, when in use, the mixing drum 1 is fed through the feed hopper 101, and the material is filtered through the filter screen 10, and the rotating arm 209 is driven to rotate by starting the driving motor 210, and the rotating arm 209 drives the cross plate 212 and the rack 208 to move back and forth through the cooperation with the round rod 214, the sliding frame 216 and the side frame 211, and the rack 208 drives the transmission gear 207 to rotate back and forth through the meshing with the transmission gear 207, and the transmission gear 207 drives the third bevel gear 203 to rotate back and forth through the horizontal shaft 206. The third bevel gear 203 drives the stirring shaft 204 and the drum 205 to reciprocate by meshing with the first bevel gear 201 and the second bevel gear 202, and the rotation directions of the stirring shaft 204 and the drum 205 are always opposite. The stirring shaft 204 drives the multiple stirring blades to reciprocate to achieve stirring of the material and improve the reaction rate. The drum 205 drives the cylinder 8 and the spiral blades 801 to reciprocate through the connecting rod 802, thereby realizing the upward and downward flipping of the material to prevent the material from sinking to the bottom and ensuring the filtration rate.

[0047] After the filtration is completed, the fastening bolt 7 is rotated to make the fastening bolt 7 disengage from the slot, and then the rotating ring 5 is rotated to drive the two clamping plates 6 to move in a circular motion, and the clamping plates 6 are aligned with the notch to release the fixation of the filter cartridge 3, and then the filter screen 10 is moved downward and removed to facilitate the cleaning of the filter residue.

[0048] The above is a detailed introduction to a filtering and stirring device for producing DOTP provided by the utility model. The principle and implementation method of the utility model are described in detail using specific embodiments. The description of the above embodiments is only used to help understand the method and core idea of ​​the utility model. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the utility model, the utility model can also be improved and modified, and these improvements and modifications also fall within the scope of protection of the claims of the utility model.

Claims

1. A filtering and stirring device for producing DOTP, characterized in that: include: A mixing drum (1), wherein a cylinder (8) is rotatably mounted inside the mixing drum (1), a spiral blade (801) is fixedly mounted inside the cylinder (8), a filter drum (3) is detachably mounted on the top of the outer side of the mixing drum (1), and a filter screen (10) is arranged inside the filter drum (3); The driving mechanism (2) comprises a driving motor (210), a rack (208), a transverse shaft (206), a stirring shaft (204) and a rotating drum (205); a rotating arm (209) is fixedly connected to the output shaft of the driving motor (210); a transverse plate (212) is fixedly installed at the bottom of the rack (208); a side frame (211) is fixedly connected to one side of the transverse plate (212); a sliding frame (216) is slidably sleeved on the outer side of the side frame (211); a round rod (214) is fixedly connected to one side of the sliding frame (216); and the rotating arm (209) is rotatably sleeved to the rotating arm (209). A transmission gear (207) and a third bevel gear (203) are fixedly mounted on the outside of the round rod (214) and at both ends of the horizontal axis (206), respectively; the top end of the stirring shaft (204) is fixedly connected to the first bevel gear (201); the outside of the rotating drum (205) is fixedly mounted to the second bevel gear (202); the third bevel gear (203) is meshed with the first bevel gear (201) and the second bevel gear (202); a plurality of stirring blades are fixedly mounted on the outside of the stirring shaft (204); and a plurality of connecting rods (802) are fixedly connected between the rotating drum (205) and the cylinder (8).

2. A filtering and stirring device for producing DOTP according to claim 1, characterized in that: A guide rail (213) is fixedly mounted on the top of the mixing drum (1), and the transverse plate (212) is slidably sleeved on the outside of the guide rail (213).

3. A filtering and stirring device for producing DOTP according to claim 1, characterized in that: The bottom of the driving motor (210) is fixedly connected to a support rod, and the support rod is fixedly mounted on the top of the mixing drum (1); A fixing plate (215) is fixedly mounted on the top of the mixing drum (1); the fixing plate (215) is rotatably sleeved on the outside of the horizontal axis (206); the rotating drum (205) is rotatably connected to the inner wall of the top of the mixing drum (1); and the mixing shaft (204) is rotatably connected inside the rotating drum (205).

4. A filtering and stirring device for producing DOTP according to claim 1, characterized in that: The filter screen (10) movably abuts against the bottom of the mixing drum (1), and a limiting ring (11) is fixedly installed inside the filter drum (3), and the limiting ring (11) movably abuts against the bottom of the filter screen (10).

5. A filtering and stirring device for producing DOTP according to claim 1, characterized in that: A support frame (4) is fixedly mounted on the outer side of the mixing drum (1), and a rotating ring (5) is rotatably sleeved on the outer side of the mixing drum (1), the rotating ring (5) movably abuts against the top of the supporting frame (4), and clamping plates (6) are fixedly mounted on both sides of the bottom of the rotating ring (5), and clamping grooves are provided on both sides of the filter drum (3), and the two clamping plates (6) are movably clamped in the corresponding clamping grooves, and a notch is provided on the inner wall of the top of the clamping groove; Both sides of the top of the rotating ring (5) are threadedly connected with fastening bolts (7), and both sides of the top of the supporting frame (4) are provided with slots, and the two fastening bolts (7) are movably inserted into the corresponding slots.

6. A filtering and stirring device for producing DOTP according to claim 1, characterized in that: The top of the mixing cylinder (1) is connected to a feed hopper (101), and the bottom of the filter cylinder (3) is connected to a discharge pipe.

7. A filtering and stirring device for producing DOTP according to claim 1, characterized in that: A plurality of limit strips (9) are fixedly mounted on the outer side of the mixing drum (1), and the filter drum (3) is movably sleeved on the outer side of the limit strips (9).

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