High vacuum system for synthesizing polyester resin

Abstract

The utility model discloses a high vacuum system for polyester resin synthesis, which comprises a vacuum pumping pipeline fixedly mounted at the vacuum pumping end of a vacuum pump, a fixed mounting plate fixedly mounted at the lower end of the outside of the vacuum pumping pipeline, an upper friction brush plate fixedly mounted at the lower end of one side of the fixed mounting plate, and a lower friction brush plate fixedly mounted at the lower end of the other side of the fixed mounting plate. The device is provided with an upper friction brush plate and a lower friction brush plate, so that the small molecule filter screen can be hidden when the rotary fitting piece rotates, the small molecule filter screen is prevented from being directly exposed in the reaction kettle main body, and some materials are prevented from being sputtered at the upper end of the small molecule filter screen to influence the use effect of the small molecule filter screen during synthesis of polyester resin; a small molecule filter screen is mounted, so that some small molecule material mist and dust in the reaction kettle main body can be intercepted, the material mist and the material dust are prevented from being sucked into the vacuum pump, the vacuum pump is prevented from being damaged, meanwhile, material loss is prevented, the product quality is guaranteed, and the practicability of the device is enhanced.

Description

Technical Field

[0001] The utility model relates to the field of polyester resin synthesis, in particular to a high-vacuum system for polyester resin synthesis. Background Art

[0002] Polyester resin is a general term for high-molecular compounds formed by polycondensation of diols or dibasic acids or polyols and polyacids. Polyester resins are divided into saturated polyester resins and unsaturated polyester resins. Unsaturated polyester adhesives are mainly composed of unsaturated polyester resins, pigments and fillers, initiators and other additives. The adhesive has small viscosity, is easy to wet, has good processability, the cured adhesive layer has high hardness, good transparency, high brightness, can be rapidly cured at room temperature under pressure, has good heat resistance, and excellent electrical properties. When synthesizing and producing polyester resin, a reaction kettle and a high-vacuum system are required. The high-vacuum system is used to evacuate the inside of the reaction kettle to ensure the stable and efficient progress of the esterification reaction. At present, when synthesizing polyester resin, workers need to add powder materials and liquid materials required for polyester resin synthesis into the reaction kettle. When the powder materials are added into the reaction kettle, powder dust is easily formed inside the reaction kettle, and a part of water mist is easily splashed up when the liquid materials are stirred. These dusts and mists are easily pumped out by the high-vacuum system, which easily causes damage to the vacuum pump in the high-vacuum system. At the same time, a part of the original is pumped out of the reaction kettle, which is easy to cause waste of resources. Content of the Utility Model

[0003] The purpose of the utility model is to provide a high-vacuum system for polyester resin synthesis.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] A high-vacuum system for polyester resin synthesis of the utility model comprises a vacuum pump:

[0006] A vacuum extraction pipeline, which is fixedly installed at the vacuum extraction end of the vacuum pump. A fixed mounting plate is fixedly installed at the lower end of the outside of the vacuum extraction pipeline. An upper friction brush plate is fixedly installed at the lower end of one side of the fixed mounting plate. The lower end of the fixed mounting plate is rotationally connected with a rotating fitting through a connecting shaft. A small molecule filter screen is fixedly installed at one side of the lower end of the rotating fitting. A sealing rubber plug is fixedly installed at the other side of the lower end of the rotating fitting. A lower friction brush plate is installed at the lower end of the rotating fitting. Metal parts magnetically attracted by magnets are arranged on both sides of the rotating fitting. A fixed magnet is fixedly installed inside one side of the lower end of the fixed mounting plate;

[0007] The reactor main body is fixedly installed outside the vacuum pumping pipeline. A rotating shaft is rotatably installed inside the reactor main body through a bearing. On one side of the upper end of the rotating shaft near the vacuum pumping pipeline, a matching mounting plate is fixedly installed. Inside the matching mounting plate, a driving rotating rod is rotatably installed through a connecting shaft. A top spring is fixedly installed at the lower end of the driving rotating rod. A limiting fitting block is arranged outside the driving rotating rod.

[0008] Furthermore, stirring rods are installed on both sides of the rotating shaft. The stirring rods are fixedly connected to the rotating shaft. Flow guiding plates are installed outside the stirring rods. The flow guiding plates are fixedly connected to the stirring rods.

[0009] Furthermore, a support base is installed at the lower end of the reactor main body. The support base is fixedly connected to the reactor main body.

[0010] Furthermore, a top support is installed at the upper end of the reactor main body. The top support is welded to the reactor main body. A feeding pipeline is fixedly installed on one side of the top support. The lower end of the feeding pipeline is embedded inside the reactor main body.

[0011] Furthermore, a control box is installed on the front end face of the reactor main body. The control box is fixedly connected to the reactor main body.

[0012] Furthermore, a driving motor is fixedly installed at the upper end of the reactor main body. The driving motor is connected to the rotating shaft through a coupling.

[0013] Furthermore, the lower friction brush plate is fixedly installed on the connecting shaft at the lower end of the fixed mounting plate. The limiting fitting block is fixedly connected to the matching mounting plate.

[0014] In the above technical solution, a high-vacuum system for polyester resin synthesis provided by the present utility model has the following beneficial effects:

[0015] 1. Installing the upper friction brush plate and the lower friction brush plate enables the rotating fitting to hide the small molecule filter screen when rotating, avoiding the direct exposure of the small molecule filter screen inside the reactor main body, preventing some materials from splashing on the upper end of the small molecule filter screen during the synthesis of polyester resin, and affecting the use effect of the small molecule filter screen. Installing the small molecule filter screen can intercept some small molecule material mists and dust inside the reactor main body, prevent the material mists and material dust from being sucked into the vacuum pump, avoid damage to the vacuum pump, and at the same time prevent the loss of materials, ensure product quality, and enhance the practicability of the device;

[0016] 2. The installed fixed magnet can magnetically adsorb the metal parts on both sides of the rotating fitting, preventing the rotating fitting from rotating easily and ensuring the integrity of the device's functionality. The installed driving rotating rod can cooperate with the upward spring. When the rotating shaft rotates forward, the driving rotating rod can press down the upward spring, causing the driving rotating rod to rotate and preventing it from pushing the rotating fitting to rotate. When the rotating shaft rotates backward, the driving rotating rod cannot flip under the action of the limiting fitting block. Instead, the driving rotating rod strongly overcomes the magnetic attraction of the fixed magnet and pushes the rotating fitting to rotate, enabling the device to control the on-off of the vacuum pumping pipeline without the need for an additional power source, making the device more convenient to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a top-down three-dimensional view of a high-vacuum system synthesized from a polyester resin;

[0019] Figure 2 It is a bottom-up three-dimensional view of a high-vacuum system synthesized from a polyester resin;

[0020] Figure 3 It is a schematic diagram of the internal structure of a high-vacuum system synthesized from a polyester resin;

[0021] Figure 4 It is a connection relationship diagram of a mating mounting plate, a limiting fitting block, and a driving rotating rod in a high-vacuum system synthesized from a polyester resin;

[0022] Figure 5 It is a connection relationship diagram of a vacuum pumping pipeline and a fixed mounting plate in a high-vacuum system synthesized from a polyester resin;

[0023] Figure 6 It is an exploded view of the connection between a fixed mounting plate and a rotating fitting in a high-vacuum system synthesized from a polyester resin.

[0024] In the figure: vacuum pump 1, support base 2, control box 3, top bracket 4, drive motor 5, reaction kettle body 6, vacuum pumping pipeline 7, feeding pipeline 8, rotating shaft 9, stirring rod 10, guide plate 11, fixed mounting plate 12, mating mounting plate 13, limiting fitting block 14, driving rotating rod 15, upward spring 16, upper friction brush plate 17, rotating fitting 18, sealing rubber plug 19, small molecule filter screen 20, lower friction brush plate 21, fixed magnet 22. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0025] In order to enable those skilled in the art to better understand the technical solution of the present utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.

[0026] Referring to Figure 1-6 , an embodiment provided by the present utility model: a high-vacuum system for polyester resin synthesis, including a vacuum pump 1:

[0027] A vacuum extraction pipeline 7 is fixedly installed at the vacuum extraction end of the vacuum pump 1. A fixed mounting plate 12 is fixedly installed at the lower end of the outside of the vacuum extraction pipeline 7. An upper friction brush plate 17 is fixedly installed at the lower end of one side of the fixed mounting plate 12. Installing the upper friction brush plate 17 and the lower friction brush plate 21 can make the small molecule filter net 20 hidden when the rotating fitting 18 rotates, avoiding the small molecule filter net 20 being directly exposed inside the reaction kettle body 6, and avoiding some materials splashing on the upper end of the small molecule filter net 20 during the synthesis of polyester resin, which affects the use effect of the small molecule filter net 20. The lower end of the fixed mounting plate 12 is rotatably connected to the rotating fitting 18 through a connecting shaft. A small molecule filter net 20 is fixedly installed at one side of the lower end of the rotating fitting 18. Installing the small molecule filter net 20 can intercept some small molecule material mists and dust inside the reaction kettle body 6, prevent the material mist and material dust from being inhaled into the vacuum pump 1, avoid damage to the vacuum pump 1, and at the same time prevent the loss of materials, ensure the product quality, and enhance the practicability of the device. A sealing rubber plug 19 is fixedly installed at the other side of the lower end of the rotating fitting 18. A lower friction brush plate 21 is installed at the lower end of the rotating fitting 18. Metal parts magnetically attracted by magnets are provided on both sides of the rotating fitting 18. A fixed magnet 22 is fixedly installed inside one side of the lower end of the fixed mounting plate 12. Installing the fixed magnet 22 can magnetically adsorb the metal parts on both sides of the rotating fitting 18, prevent the rotating fitting 18 from rotating easily, and ensure the integrity of the device function;

[0028] The reactor main body 6 is fixedly installed outside the vacuum pumping pipeline 7. A rotating shaft 9 is rotatably installed inside the reactor main body 6 through bearings. On one side of the upper end of the outside of the rotating shaft 9 close to the vacuum pumping pipeline 7, a matching mounting plate 13 is fixedly installed. Inside the matching mounting plate 13, a driving rotating rod 15 is rotatably installed through a connecting shaft. Installing the driving rotating rod 15 allows it to cooperate with the upward spring 16. When the rotating shaft 9 rotates forward, the driving rotating rod 15 can press down the upward spring 16, causing the driving rotating rod 15 to rotate, so that the driving rotating rod 15 cannot push the rotating fitting 18 to rotate. When the rotating shaft 9 rotates in the reverse direction, the driving rotating rod 15 cannot flip under the action of the limiting fitting block 14. Furthermore, the driving rotating rod 15 strongly overcomes the magnetic attraction of the fixed magnet 22 and pushes the rotating fitting 18 to rotate, enabling the device to control the on / off of the vacuum pumping pipeline 7 without the need to install an additional power source, making the device more convenient to use. The lower end of the driving rotating rod 15 is fixedly installed with an upward spring 16, and a limiting fitting block 14 is arranged outside the driving rotating rod 15.

[0029] Refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 , on both sides of the outside of the rotating shaft 9, stirring rods 10 are installed. The stirring rods 10 are fixedly connected to the rotating shaft 9. A flow guide plate 11 is installed outside the stirring rods 10. Installing the flow guide plate 11 enables the flow guide plate 11 to guide the material when the stirring rods 10 rotate and stir the material, making the material mixing more uniform and enhancing the material mixing ability of the stirring rods 10. The flow guide plate 11 is fixedly connected to the stirring rods 10. The lower end of the reactor main body 6 is installed with a support base 2, and the support base 2 is fixedly connected to the reactor main body 6. The upper end of the reactor main body 6 is installed with a top bracket 4, and the top bracket 4 is welded to the reactor main body 6. On one side of the top bracket 4, a feeding pipeline 8 is fixedly installed. The lower end of the feeding pipeline 8 is embedded inside the reactor main body 6. A control box 3 is installed on the front end face of the reactor main body 6, and the control box 3 is fixedly connected to the reactor main body 6. A driving motor 5 is fixedly installed at the upper end of the reactor main body 6, and the driving motor 5 is connected to the rotating shaft 9 through a coupling. The lower friction brush plate 21 is fixedly installed on the connecting shaft at the lower end of the fixed mounting plate 12, and the limiting fitting block 14 is fixedly connected to the matching mounting plate 13.

[0030] The specific use process of the utility model is as follows: The staff adds the polyester resin synthesis material into the reaction kettle main body 6 through the feeding pipeline 8, and then the staff starts the driving motor 5 to drive the rotating shaft 9 to rotate slowly forward, so that the stirring rod 10 and the guide plate 11 stir and mix the material. At this time, the driving rotating rod 15 can press down the upper top spring 16, so that the driving rotating rod 15 rotates a certain angle, making the driving rotating rod 15 unable to push the rotating fitting 18 to rotate. Therefore, the rotating fitting 18 remains stationary. At this time, one side of the rotating fitting 18 with a sealing rubber plug 19 installed inside is attached to the lower end of the vacuum pumping pipeline 7 to seal the vacuum pumping pipeline 7. When vacuum pumping is required, the driving motor 5 drives the rotating shaft 9 to rotate in the reverse direction. At this time, the driving rotating rod 15 cannot reverse under the action of the limit fitting block 14. Furthermore, the driving rotating rod 15 strongly overcomes the magnetic attraction of the fixed magnet 22 to push the rotating fitting 18 to rotate. The rotating fitting 18 breaks away from the restriction of the fixed magnet 22 and can continue to rotate under the action of inertia until one side of the rotating fitting 18 with a small molecule filter screen 20 installed inside moves to the lower end of the vacuum pumping pipeline 7. At this time, the fixed magnet 22 re-attracts the rotating fitting 18, and then the driving motor 5 stops working. The vacuum pump 1 pumps out the air inside the reaction kettle main body 6, and the mist and material dust generated during the feeding of the reaction kettle main body 6 are intercepted inside the reaction kettle main body 6 by the small molecule filter screen 20.

[0031] Only some exemplary embodiments of the present utility model have been described by way of illustration. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present utility model, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the protection scope of the claims of the present utility model.

Claims

1. A high vacuum system for polyester resin synthesis, comprising a vacuum pump (1), characterized in that: A vacuum pipe (7) is fixedly mounted on the vacuum end of the vacuum pump (1); a fixed mounting plate (12) is fixedly mounted on the lower end of the outside of the vacuum pipe (7); an upper friction brush plate (17) is fixedly mounted on the lower end of one side of the fixed mounting plate (12); the lower end of the fixed mounting plate (12) is rotatably connected to a rotating fitting (18) via a connecting shaft; a small molecule filter (20) is fixedly mounted on one side of the lower end of the rotating fitting (18); a sealing rubber block (19) is fixedly mounted on the other side of the lower end of the rotating fitting (18); a lower friction brush plate (21) is mounted on the lower end of the rotating fitting (18); metal parts that are magnetically attracted to a magnet are provided on both sides of the rotating fitting (18); a fixed magnet (22) is fixedly mounted inside one side of the lower end of the fixed mounting plate (12); The reactor body (6) is fixedly mounted on the outside of the vacuum pipe (7); a rotating shaft (9) is rotatably mounted inside the reactor body (6) via a bearing; a matching mounting plate (13) is fixedly mounted on the side of the upper end of the outer side of the rotating shaft (9) close to the vacuum pipe (7); a driving rotating rod (15) is rotatably mounted inside the matching mounting plate (13) via a connecting shaft; a top spring (16) is fixedly mounted on the lower end of the driving rotating rod (15); and a limited position fitting block (14) is arranged outside the driving rotating rod (15).

2. A high vacuum system for polyester resin synthesis according to claim 1, characterized in that: Stirring rods (10) are installed on both sides of the outside of the rotating shaft (9), and the stirring rods (10) are fixedly connected to the rotating shaft (9). Guide plates (11) are installed on the outside of the stirring rods (10), and the guide plates (11) are fixedly connected to the stirring rods (10).

3. A high vacuum system for polyester resin synthesis according to claim 1, characterized in that: A support base (2) is installed at the lower end of the reactor body (6), and the support base (2) is fixedly connected to the reactor body (6).

4. A high vacuum system for polyester resin synthesis according to claim 1, characterized in that: A top bracket (4) is installed at the upper end of the reactor body (6), and the top bracket (4) is welded to the reactor body (6). An injection pipe (8) is fixedly installed on one side of the top bracket (4), and the lower end of the injection pipe (8) is embedded in the interior of the reactor body (6).

5. A high vacuum system for polyester resin synthesis according to claim 1, characterized in that: A control box (3) is installed on the front end surface of the reactor body (6), and the control box (3) is fixedly connected to the reactor body (6).

6. A high vacuum system for polyester resin synthesis according to claim 1, characterized in that: A driving motor (5) is fixedly mounted on the upper end of the reactor body (6), and the driving motor (5) is connected to the rotating shaft (9) via a coupling.

7. A high vacuum system for polyester resin synthesis according to claim 1, characterized in that: The lower friction brush plate (21) is fixedly mounted on a connecting shaft at the lower end of the fixed mounting plate (12), and the position limiting fitting block (14) is fixedly connected to the matching mounting plate (13).

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