Device for preparing bisphenol A type diether dianhydride

Abstract

The utility model discloses a device for preparing bisphenol A type diether dianhydride, which comprises a jacket barrel body, a mixing component and a fixing component, an upper cover is arranged at the top of the jacket barrel body, the mixing component is used for mixing raw materials for preparing bisphenol A type diether dianhydride, the fixing component comprises a first flange arranged on the outer side of the top of the jacket barrel body, and a second flange is arranged on the outer side of the top of the jacket barrel body. A second flange is arranged on the outer side of the upper cover, a fixing bolt is connected to the bottom of the first flange in a penetrating mode and sleeved with a fixing nut, an anti-loosening part is arranged at the penetrating position of the fixing bolt and the first flange, and a plurality of tensioning parts are symmetrically arranged on the outer side of the first flange. The two flanges are fixed through the fixing bolt and the fixing nut in the fixing assembly, the anti-loosening part can enable the meshing position of the fixing bolt and the fixing nut to be in tight contact, and therefore the fixing bolt is prevented from loosening, and the tensioning part assists in tensioning the two flanges so that the two flanges can be fixed. And the impact force of the upper cover impacted by the internal and external air pressure difference on the fixing bolts is relieved.

Description

Technical Field

[0001] This utility model relates to the field of equipment for preparing bisphenol A type diether dianhydride, and particularly to an apparatus for preparing bisphenol A type diether dianhydride. Background Technology

[0002] In the field of chemical synthesis, especially in the production of bisphenol A diether dianhydride, the reaction apparatus usually needs to operate under high temperature and high pressure conditions, which places extremely high demands on the structural stability and sealing of the equipment. Traditionally, the top cover of a jacketed reactor is connected to the main body of the jacketed reactor by a flange, which is fixed with bolts and nuts. Under the long-term impact of the internal and external pressure difference caused by reaction changes on the top cover, this fixing method is prone to causing the fixing bolts to loosen due to impact, resulting in gaps at the connection between the top cover and the main body of the jacketed reactor, which affects the production process of bisphenol A diether dianhydride. Therefore, in order to address the above-mentioned problems, this utility model proposes an apparatus for the preparation of bisphenol A diether dianhydride. Utility Model Content

[0003] The purpose of this invention is to provide an apparatus for preparing bisphenol A type diether dianhydride, so as to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution: an apparatus for preparing bisphenol A type diether dianhydride, comprising a jacketed cylinder, wherein a top cover is provided on the top of the jacketed cylinder, and further comprising:

[0005] A mixing assembly for mixing raw materials for the preparation of bisphenol A type diether dianhydride. The mixing assembly includes a motor disposed on the top of the upper cover, and an impeller disposed in the inner cavity of the jacket cylinder. The top end of the impeller is inserted into the bottom of the upper cover and fixedly connected to the output end of the motor.

[0006] A fixing component is provided at the connection between the upper cover and the jacket cylinder. The fixing component includes a first flange located on the outer side of the top of the jacket cylinder, and a second flange located on the outer side of the bottom of the upper cover. A fixing bolt is inserted and connected to the bottom of the first flange. A fixing nut is fitted on the outer side of the fixing bolt and on the top of the second flange. An anti-loosening part for fixing the bolt is provided at the insertion point of the fixing bolt and the first flange. Multiple tensioning parts for assisting in fixing the second flange are symmetrically arranged on the outer sides of the first flange and the second flange.

[0007] Preferably, the anti-loosening part includes a pressure ring sleeved on the outside of the fixing bolt and a compression spring, wherein the compression spring is disposed on the top of the pressure ring.

[0008] Preferably, the tensioning part includes a support disposed on the outside of the first flange, a rotating block is hinged to one end of the support near the second flange, a locking hook is disposed on the side of the second flange, and a locking sleeve for connecting the locking hook is hinged to the outside of the rotating block.

[0009] Preferably, the end of the support away from the second flange is provided with an elastic insert, the end of the elastic insert is inserted into the side of the rotating block, the insertion end of the elastic insert is provided with an oblique protrusion, and the side of the rotating block is provided with a slot for the oblique protrusion to be inserted.

[0010] Preferably, a gasket is provided at the connection between the jacket cylinder and the top cover, and the gasket is used to fill the gap at the connection between the jacket cylinder and the top cover.

[0011] Preferably, a heat transfer fluid outlet is provided on the top side of the jacket cylinder, and a heat transfer fluid inlet is provided on the bottom side of the jacket cylinder.

[0012] Preferably, the bottom of the jacket cylinder is provided with a discharge port, which is used for discharging material from the jacket cylinder.

[0013] Preferably, an ear seat is provided around the outer side of the jacket cylinder, and the ear seat is used to fix the device.

[0014] The technical effects and advantages of this utility model are as follows:

[0015] This utility model features a fixing assembly at the flange connection between the jacket cylinder and the top cover. The fixing bolts and nuts in the fixing assembly secure the two flanges. The anti-loosening part ensures that the engagement of the fixing bolts and nuts is tight, thereby preventing the fixing bolts from loosening. The tensioning part assists in tightening and fixing the two flanges, thus mitigating the impact force on the fixing bolts caused by the pressure difference between the inside and outside air on the top cover. Attached Figure Description

[0016] Figure 1 This is a cross-sectional view of the entire utility model.

[0017] Figure 2 This utility model Figure 1 Enlarged view of the structure at point A in the middle.

[0018] Figure 3 This is a cross-sectional view of the fixing component of this utility model.

[0019] Figure 4 This is a schematic diagram of the structure of the fixing component of this utility model.

[0020] In the diagram: 1. Jacket body; 101. First flange; 102. Heat transfer fluid outlet; 103. Heat transfer fluid inlet; 104. Ear seat; 105. Discharge port; 2. Top cover; 201. Second flange; 2011. Locking hook; 3. Motor; 301. Agitator impeller; 4. Gasket; 5. Fixing bolt; 501. Fixing nut; 502. Pressure ring; 503. Compression spring; 6. Support; 601. Elastic insert; 7. Rotating block; 701. Locking sleeve; 702. Slot. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] This utility model provides, for example Figure 1-4 The apparatus shown is for preparing bisphenol A type diether dianhydride, including a jacketed cylinder 1, with a top cover 2 provided on the top of the jacketed cylinder 1, and further including: a mixing component and a fixing component;

[0023] It should be noted that the overall structure formed by the jacket body 1 and the top cover 2 refers to the working principle of a 50L stainless steel jacketed reactor. The top side of the jacket body 1 is provided with a heat transfer fluid outlet 102, the bottom side of the jacket body 1 is provided with a heat transfer fluid inlet 103, the bottom of the jacket body 1 is provided with a discharge port 105, which is used for discharging material from the jacket body 1. The outer side of the jacket body 1 is provided with a lug 104 welded around it, which is used for fixing the device.

[0024] Specifically, the mixing component is used for mixing the raw materials for the preparation of bisphenol A type diether dianhydride. The mixing component includes a motor 3 set on the top of the upper cover 2, and a stirring impeller 301 is provided in the inner cavity of the jacket cylinder 1. The top end of the stirring impeller 301 is inserted and connected to the bottom of the upper cover 2 and fixedly connected to the output end of the motor 3.

[0025] It should be noted that the output end of the motor 3 is connected and fixed to the impeller 301 by a coupling;

[0026] Specifically, the fixing component is set at the connection between the upper cover 2 and the jacket cylinder 1. The fixing component includes a first flange 101 set on the outer side of the top of the jacket cylinder 1, a second flange 201 set on the outer side of the bottom of the upper cover 2, a fixing bolt 5 inserted through the bottom of the first flange 101, and a fixing nut 501 sleeved on the outer side of the fixing bolt 5 and on the top of the second flange 201.

[0027] It should be noted that the first flange 101 is welded and fixed to the outer side of the top of the jacket body 1, and the upper cover 2 is welded and fixed to the second flange 201. The insertion point of the fixing bolt 5 and the first flange 101 is provided with an anti-loosening part for fixing the bolt 5. A gasket 4 is provided at the connection between the jacket body 1 and the upper cover 2. The gasket 4 is used to fill the gap at the connection between the jacket body 1 and the upper cover 2. The material of the gasket 4 is oil-resistant asbestos rubber.

[0028] Specifically, the anti-loosening part includes a pressure ring 502 sleeved on the outside of the fixing bolt 5 and a compression spring 503, with the compression spring 503 located on the top of the pressure ring 502;

[0029] It should be noted that the bottom of the first flange 101 is provided with a cylindrical hole for placing the pressure ring 502 and the compression spring 503. The pressure ring 502 and the outer side of the fixing bolt 5 are fixed with glue. The outer sides of the first flange 101 and the second flange 201 are symmetrically provided with multiple tensioning parts for assisting in fixing the second flange 201.

[0030] Specifically, the tensioning part includes a support 6 disposed on the outside of the first flange 101, a rotating block 7 hinged to one end of the support 6 near the second flange 201, a locking hook 2011 disposed on the side of the second flange 201, and a locking sleeve 701 for connecting the locking hook 2011 hinged to the outside of the rotating block 7.

[0031] It should be noted that the support 6 is welded and fixed to the first flange 101, the locking hook 2011 is welded and fixed to the second flange 201, and an elastic insert 601 is welded to the end of the support 6 away from the second flange 201. The end of the elastic insert 601 is inserted and connected to the side of the rotating block 7.

[0032] Specifically, the insertion end of the elastic insert 601 is provided with an oblique protrusion, and the side of the rotating block 7 is provided with a slot 702 for the oblique protrusion to pass through. After the oblique protrusion passes through the slot 702, it is engaged with the outside of the rotating block 7.

[0033] In actual use, the fixing bolt 5 and fixing nut 501 in the fixing assembly secure the two flanges. The anti-loosening part ensures a tight contact between the fixing bolt 5 and the fixing nut 501, preventing the fixing bolt 5 from loosening. After the locking sleeve 701 is placed on the outside of the locking hook 2011, rotating the rotating block 7 causes the elastic insert 601 to insert into the slot 702 and lock. To unlock, the elastic insert 601 is moved out of the slot 702, and rotating the rotating block 7 disengages the locking sleeve 701 from the locking hook 2011. The tensioning part helps to tighten and fix the two flanges, mitigating the impact force generated by the upper cover 2 on the fixing bolt 5 due to the pressure difference between the inside and outside air.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An apparatus for preparing bisphenol A type diether dianhydride, comprising a jacketed cylinder (1), wherein a top cover (2) is provided on the top of the jacketed cylinder (1), characterized in that, Also includes: A mixing assembly is used for mixing raw materials for the preparation of bisphenol A type diether dianhydride. The mixing assembly includes a motor (3) disposed on the top of the upper cover (2). The inner cavity of the jacket cylinder (1) is provided with a stirring impeller (301). The top end of the stirring impeller (301) is inserted and connected to the bottom of the upper cover (2) and fixedly connected to the output end of the motor (3). A fixing component is provided at the connection between the upper cover (2) and the jacket cylinder (1). The fixing component includes a first flange (101) located on the outer side of the top of the jacket cylinder (1), and a second flange (201) located on the outer side of the bottom of the upper cover (2). A fixing bolt (5) is inserted and connected to the bottom of the first flange (101). A fixing nut (501) is sleeved on the outer side of the fixing bolt (5) and on the top of the second flange (201). An anti-loosening part for fixing the bolt (5) is provided at the insertion point between the fixing bolt (5) and the first flange (101). Multiple tensioning parts for assisting in fixing the second flange (201) are symmetrically arranged on the outer sides of the first flange (101) and the second flange (201).

2. The apparatus for preparing bisphenol A type diether dianhydride according to claim 1, characterized in that, The anti-loosening part includes a pressure ring (502) and a compression spring (503) sleeved on the outside of the fixing bolt (5), and the compression spring (503) is disposed on the top of the pressure ring (502).

3. The apparatus for preparing bisphenol A type diether dianhydride according to claim 2, characterized in that, The tensioning part includes a support (6) disposed on the outside of the first flange (101), and a rotating block (7) is hinged to one end of the support (6) near the second flange (201). A locking hook (2011) is disposed on the side of the second flange (201), and a locking sleeve (701) for connecting the locking hook (2011) is hinged to the outside of the rotating block (7).

4. The apparatus for preparing bisphenol A type diether dianhydride according to claim 3, characterized in that, The support (6) is provided with an elastic insert (601) at one end away from the second flange (201). The end of the elastic insert (601) is inserted into the side of the rotating block (7). The insertion end of the elastic insert (601) is provided with an oblique protrusion. The side of the rotating block (7) is provided with a slot (702) for the oblique protrusion to be inserted.

5. The apparatus for preparing bisphenol A type diether dianhydride according to claim 1, characterized in that, A gasket (4) is provided at the connection between the jacket cylinder (1) and the upper cover (2), and the gasket (4) is used to fill the gap at the connection between the jacket cylinder (1) and the upper cover (2).

6. The apparatus for preparing bisphenol A type diether dianhydride according to claim 5, characterized in that, The jacket cylinder (1) has a heat transfer fluid outlet (102) on its top side and a heat transfer fluid inlet (103) on its bottom side.

7. The apparatus for preparing bisphenol A type diether dianhydride according to claim 6, characterized in that, The bottom of the jacket cylinder (1) is provided with a discharge port (105), which is used for discharging material from the jacket cylinder (1).

8. The apparatus for preparing bisphenol A type diether dianhydride according to claim 6, characterized in that, The jacket cylinder (1) is surrounded by an ear seat (104), which is used to fix the device.

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