Epoxidation dropwise adding device for polyallyl-substituted bisphenol glycidyl ether

Abstract

The utility model discloses an epoxidation dripping device for polyallyl substituted bisphenol a glycidyl ether, which relates to the technical field of chemical production and comprises a control component, and the control component comprises an electric cylinder, a telescopic rod, a connecting frame, a through hole, a splash plate and a sealing plunger. According to the epoxidation dropwise adding device for polyallyl substituted bisphenol a glycidyl ether, when a large amount of liquid needs to be dropwise added, an electric cylinder controls a connecting frame to be located in a barrel to descend in the radial direction through a telescopic rod, so that channels of liquid dropping pipes entering the two sides of the barrel from through holes are cut off, a pressure relief opening in the bottom of the barrel is opened, and then the liquid dropping pipes are dropped; then the liquid in the liquid storage tank is pressurized through the air inflation tank, when the preset pressure is reached, an electromagnetic valve is opened, the pressurized liquid is sprayed into the inner cavity of the cylinder body, and the high-speed liquid impacts the water splashing disc to atomize the liquid, so that sprayed liquid drops are finer, and the situation that when a large amount of liquid is dropwise added only through a porous dropper, the liquid still flows down in strands, and the liquid is nebulized is avoided. And uniform addition cannot be realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of chemical production, concretely to a kind of epoxy droping device of polyallyl-substituted bisphenol a glycidyl ether. BACKGROUND

[0002] Polyallyl-substituted bisphenol A glycidyl ether is a kind of chemical based on bisphenol A diglycidyl ether (DGEBA), which needs to undergo epoxidation reaction in the production process. Epoxidation dropping is a process step in epoxidation reaction, specifically referring to adding oxidizing agent to the reaction system containing olefins and catalyst.

[0003] The existing traditional dropping device is generally liquid that enters the container in a point manner by direct delivery. The liquid dropped flows in strands, so the dispersion performance of the dropping material is poor, and the reaction liquid in the container is not mixed uniformly, which easily causes local concentration to be too high, leading to local reaction too fast, increasing side reactions, and seriously affecting product quality.

[0004] Therefore, in view of the above, the existing structure is improved, and a kind of epoxy droping device of polyallyl-substituted bisphenol a glycidyl ether is provided. UTILITY MODEL CONTENT

[0005] The utility model aims to provide a kind of epoxy droping device of polyallyl-substituted bisphenol a glycidyl ether to solve the problems raised in the above background.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical scheme: a kind of epoxy droping device of polyallyl-substituted bisphenol a glycidyl ether, including control assembly, the control assembly includes electric cylinder, telescopic rod, connecting frame, through-hole, splash plate and sealing plunger, the telescopic rod is fixedly connected at the output end of the electric cylinder, and the telescopic rod end is bolted with the connecting frame, the connecting frame both sides are symmetrically provided with through-hole, and the connecting frame end is fixedly connected with splash plate, and the splash plate bottom is integrally fixed with sealing plunger.

[0007] Further, the electric cylinder controls the radial lifting of the connecting frame through the telescopic rod, and the connecting frame is integrally fixed with the end splash plate.

[0008] Further, the electric cylinder is fixed on one side of the top of the cylinder, and the bottom of the cylinder is provided with a pressure relief port matched with the sealing plunger.

[0009] Further, the cylinder is communicated with a drip tube on both sides, and the bottom of the drip tube is arranged with a liquid distribution port along the axis, and the inner opening of the drip tube is communicated with the inner cavity of the cylinder through the through-hole.

[0010] Further, the top of the cylinder is communicated with a connecting pipe, and the connecting pipe is controlled by the electromagnetic valve in the middle.

[0011] Further, the connecting pipe is communicated with the bottom end of the liquid storage tank, and the side of the liquid storage tank is communicated with the air tank through a pipeline.

[0012] Further, the cylinder is fixed to the middle end of the top of the reaction kettle through a flange, and the bottom of the reaction kettle is provided with foot dispersing paddles driven by a motor.

[0013] Compared with the prior art, the utility model has the following beneficial effects:

[0014] 1. When a small amount of liquid needs to be added dropwise, the liquid in the liquid storage tank is injected into the inner cavity of the cylinder under the action of gravity through the connecting pipe, the liquid enters the drop pipe through the through holes on both sides of the connecting frame, and is uniformly added into the reaction kettle through the liquid distribution openings distributed along the axis of the drop pipe, so that the mixed liquid in the kettle is more uniform, and the application is provided with stirring dispersing paddles driven by a motor on both sides of the bottom of the reaction kettle, so that the oxidant added into the kettle body of the reaction kettle can be dispersed in time, local enrichment of the oxidant is avoided, and hot spots are avoided, and safety control is facilitated.

[0015] 2. When a large amount of liquid needs to be added dropwise, the connecting frame is controlled to be radially lowered in the cylinder by the telescopic rod, so that the passageway of the drop pipe into the cylinder on both sides is cut off, and the pressure relief port at the bottom of the cylinder is opened, then the liquid in the liquid storage tank is pressurized through the air tank, the electromagnetic valve is opened to spray the pressurized liquid into the inner cavity of the cylinder when the preset pressure is reached, the high-speed liquid splashes the water pan to atomize the liquid, so that the sprayed liquid droplets are smaller, and the liquid still flows in a stream when a large amount of liquid is added dropwise by only using a porous drop pipe, and the liquid cannot be uniformly added. BRIEF DESCRIPTION OF DRAWINGS

[0016] Fig. 1 It is a schematic view of the external structure of the cylinder of the utility model;

[0017] Fig. 2 It is a schematic view of the state of adding a small amount of liquid of the utility model;

[0018] Fig. 3 It is a schematic view of the state of adding a large amount of liquid of the utility model;

[0019] Fig. 4 It is a schematic view of the overall structure of the device of the utility model.

[0020] In the figure: 1, control assembly; 101, electric cylinder; 102, telescopic rod; 103, connecting frame; 104, through hole; 105, splash plate; 106, sealing plunger; 2, barrel; 3, pressure relief port; 4, drip tube; 5, liquid distribution port; 6, connecting pipe; 7, electromagnetic valve; 8, liquid storage tank; 9, air charging tank; 10, reaction kettle; 11, stirring and dispersing paddle. DETAILED DESCRIPTION

[0021] The embodiments of the present application will be further described below in conjunction with the drawings and examples. The following examples are used to illustrate the present application, but cannot be used to limit the scope of the present application.

[0022] As Figs. 1 to 4As shown, an epoxy dropping device for polyallyl-substituted bisphenol A glycidyl ether, comprising a control assembly 1, the control assembly 1 comprising an electric cylinder 101, an extension rod 102, a connecting frame 103, a through hole 104, a splash basin 105 and a sealing plunger 106, the extension rod 102 is fixedly connected at the output end of the electric cylinder 101, and the extension rod 102 is bolted at the end with the connecting frame 103, the through hole 104 is symmetrically opened at both sides of the connecting frame 103, the splash basin 105 is fixedly connected at the end of the connecting frame 103, and the sealing plunger 106 is integrally fixed at the bottom of the splash basin 105, the electric cylinder 101 controls the radial lifting of the connecting frame 103 through the extension rod 102, and the connecting frame 103 is integrally fixed with the end splash basin 105, the electric cylinder 101 controls the radial descent of the connecting frame 103 inside the cylinder 2 through the extension rod 102, so that the passage of the dropping tube 4 entering the cylinder 2 from both sides of the through hole 104 is cut off, and the pressure relief port 3 at the bottom of the cylinder 2 is opened, the electric cylinder 101 is fixed on one side of the top of the cylinder 2, and the pressure relief port 3 matched with the sealing plunger 106 is opened at the bottom of the cylinder 2, the dropping tube 4 is communicated at both sides of the cylinder 2, and the liquid distribution port 5 is arranged along the axis at the bottom of the dropping tube 4, and the inside opening of the dropping tube 4 is communicated with the inner cavity of the cylinder 2 through the through hole 104, the liquid in the liquid storage tank 8 is injected into the inner cavity of the cylinder 2 through the connecting pipe 6 under the action of gravity, because the pressure relief port 3 at the bottom of the cylinder 2 is blocked by the sealing plunger 106, so the liquid enters the dropping tube 4 from both sides of the through hole 104 of the connecting frame 103, and is further added to the reaction kettle through the liquid distribution port 5 distributed along the axis of the dropping tube 4, so that the mixed liquid is more uniform, and the bottom of the reaction kettle 10 is provided with a stirring and dispersing paddle 11 driven by a motor, so that the oxidizing agent added into the kettle body of the reaction kettle 10 can be dispersed in time, avoiding the enrichment of local oxidizing agent to generate hot spots, thereby facilitating safety control, the connecting pipe 6 is communicated at the top of the cylinder 2, and the connecting pipe 6 is controlled to be opened and closed by the electromagnetic valve 7 in the middle, the connecting pipe 6 is communicated with the bottom of the liquid storage tank 8, and the side of the liquid storage tank 8 is communicated with the gas charging tank 9 through the pipeline, the liquid in the liquid storage tank 8 is pressurized through the gas charging tank 9, and when the preset pressure is reached, the electromagnetic valve 7 is opened to spray the pressurized liquid into the inner cavity of the cylinder 2, the high-speed liquid impacts the splash basin 105 to atomize the liquid, so that the sprayed liquid droplets are smaller, avoiding the problem that when a large amount of liquid is added by using a porous dropping tube, the liquid still flows in a stream and cannot be added uniformly.

[0023] Working principle: when using the epoxy dropping device of the polyallyl-substituted bisphenol A glycidyl ether, when a small amount of liquid needs to be dropped, the liquid in the liquid storage tank 8 is injected into the inner cavity of the cylinder 2 through the connecting pipe 6 under the action of gravity, because the bottom pressure relief port 3 of the cylinder 2 is blocked by the sealing plunger 106, so the liquid enters the dropping pipe 4 through the through hole 104 on both sides of the connecting frame 103, and is further dropped into the reaction kettle through the liquid distribution port 5 distributed on the axis of the dropping pipe 4, so that the mixed liquid is more uniform, when a large amount of liquid needs to be dropped, the electric cylinder 101 controls the connecting frame 103 to descend radially inside the cylinder 2 through the telescopic rod 102, so that the passage of the dropping pipe 4 into the cylinder 2 on both sides is cut off, and the bottom pressure relief port 3 of the cylinder 2 is opened, then the liquid in the liquid storage tank 8 is pressurized through the gas charging tank 9, and when the preset pressure is reached, the electromagnetic valve 7 is opened to spray the pressurized liquid into the inner cavity of the cylinder 2, the high-speed liquid splashes the splash plate 105 to atomize the liquid, so that the sprayed liquid droplets are smaller, avoiding the defects that when only a multi-hole dropping pipe is used to drop a large amount of liquid, the liquid still flows in a stream and cannot be added uniformly.

[0024] Embodiments of the present application are given for the purpose of example and description only and are not intended to be exhaustive or to limit the application to the precise form disclosed. Many modifications and variations are possible in light of this disclosure. The selected and described embodiments are chosen and described for the purpose of better illustrating the principles of the application and its practical application and to enable others skilled in the art to understand the application to the extent that the application accomplishes the objectives set forth hereinabove, and the attendant advantages, in view of the teachings.

Claims

1. An apparatus for the epoxidation dropwise of polyallyl-substituted bisphenyl A glycidyl ethers, comprising a control assembly (1), characterized in that, The control assembly (1) includes an electric cylinder (101), a telescopic rod (102), a connecting frame (103), a through hole (104), a splash plate (105) and a sealing plunger (106), the telescopic rod (102) is fixedly connected to the output end of the electric cylinder (101), and the telescopic rod (102) is bolted to the connecting frame (103) at the end; the through hole (104) is symmetrically arranged on both sides of the connecting frame (103), the splash plate (105) is fixedly connected to the end of the connecting frame (103), and the sealing plunger (106) is integrally fixed to the bottom of the splash plate (105).

2. A device for the dropwise addition of a polyalkenyl-substituted bisphenol A glycidyl ether for the epoxidation according to claim 1, characterized in that The electric cylinder (101) controls the radial lifting of the connecting frame (103) through the telescopic rod (102), and the connecting frame (103) is integrally fixed with the end splash plate (105).

3. A device for the dropwise addition of a polyalkenyl substituted bisphenol A glycidyl ether for epoxidation according to claim 1, characterized in that The electric cylinder (101) is fixed on one side of the top of the cylinder (2), and the cylinder (2) is provided with a pressure relief port (3) at the bottom, which is matched with the sealing plunger (106).

4. A device for the dropwise addition of a polyalkenyl-substituted bisphenyl A glycidyl ether for the epoxidation according to claim 3, characterized in that The cylinder (2) is communicated with a drip tube (4) on both sides, the drip tube (4) is arranged with a liquid distribution port (5) along the axis at the bottom, and the inside opening of the drip tube (4) is communicated with the inner cavity of the cylinder (2) through the through hole (104).

5. A device for the dropwise addition of a polyalkenyl substituted bisphenol A glycidyl ether for epoxidation according to claim 3, characterized in that The top of the cylinder (2) is communicated with a connecting pipe (6), and the connecting pipe (6) is controlled by a middle electromagnetic valve (7).

6. A device for the dropwise addition of a polyalkenyl-substituted bisphenyl A glycidyl ether for the epoxidation according to claim 5, characterized in that The connecting pipe (6) is communicated with the bottom end of the liquid storage tank (8), and the liquid storage tank (8) is communicated with the air charging tank (9) through the pipeline on the side.

7. A device for the dropwise addition of a polyalkenyl-substituted bisphenol A glycidyl ether for the epoxidation according to claim 3, characterized in that The cylinder (2) is fixed to the top of the reaction kettle (10) through the flange, and the bottom of the reaction kettle (10) is provided with a foot dispersing paddle (11) driven by a motor.

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