Liquid reagent injection equipment for polymerization inhibitor production

Abstract

The utility model discloses liquid reagent injection equipment for polymerization inhibitor production, and relates to the technical field of polymerization inhibitor production. The reaction tank comprises a reaction tank and a cover body which is fixedly arranged at the top end of the reaction tank through a bolt, a stirring mechanism is fixedly arranged on the top surface of the cover body, and a stirring part of the stirring mechanism is positioned in the reaction tank. According to the utility model, the reagent injection assembly is inserted into the liquid injection pipe, and the reagent injection assembly is vertically pushed to enable the end part of the reagent injection assembly to be in contact with the sealing element, so that the sealing element is turned over, the bottom end of the reagent injection assembly is positioned in the reaction tank, and a liquid reagent is injected into the reaction tank through the reagent injection assembly; after the liquid reagent is injected, the reagent injection assembly is vertically pulled out, so that the sealing part of the sealing piece is tightly attached to the end part of the liquid injection pipe under the action of the counterweight part of the sealing piece, and therefore, when the liquid reagent is injected, the operation steps are simplified, and the use convenience is improved.

Description

Technical Field

[0001] This utility model relates to the field of polymerization inhibitor production technology, specifically to a liquid reagent injection device for polymerization inhibitor production. Background Technology

[0002] Polymer inhibitors have many uses. For example, during monomer separation, purification, and storage, a certain amount of inhibitor is added to terminate the polymerization reaction. When certain monomers reach a certain conversion rate during polymerization, a certain amount of inhibitor is added to terminate the polymerization reaction. Adding a certain inhibitor to polymer products can prevent aging. Styrene is very prone to high-temperature self-polymerization. In the distillation process of industrial styrene production, in order to prevent scale formation in the distillation unit, which would reduce production efficiency and increase production costs, some inhibitors need to be added. During the production of inhibitors, some auxiliary agents need to be added to enhance the reaction efficiency, including solid auxiliary materials and liquid reagent auxiliary materials.

[0003] Chinese Patent No. CN216367878U discloses a liquid reagent injection device for producing a polymerization inhibitor, including a reaction chamber, a base on one side of the reaction chamber, a fixing mechanism on the top side of the base, a support mechanism at the bottom of the base, a slot at the top of the base, a pipette at the top of the slot, a funnel at the bottom of the pipette, and a water pipe fixed at the bottom of the funnel.

[0004] Regarding the aforementioned disclosed technology, when inserting the pipe into the reactor, the operator needs to first vertically pull the upright plate to compress the first spring before the pipe can be inserted into the reactor, making the operation rather cumbersome.

[0005] Therefore, a liquid reagent injection device for the production of polymerization inhibitors is proposed. Utility Model Content

[0006] The purpose of this invention is to provide a liquid reagent injection device for producing polymerization inhibitors, in order to solve the problems mentioned in the background art.

[0007] To achieve the above objectives, this utility model specifically adopts the following technical solution:

[0008] A liquid reagent injection device for producing a polymerization inhibitor includes a reaction vessel and a cover fixedly mounted on the top of the reaction vessel by bolts. An agitator is fixedly mounted on the top surface of the cover, and the stirring part of the agitator is located inside the reaction vessel. A liquid injection pipe is fixedly inserted into the top surface of the cover. Two sets of L-shaped side brackets are fixedly mounted on the surface of the liquid injection pipe near the bottom end, and sealing elements are rotatably mounted on the two sets of L-shaped side brackets. A reagent injection assembly is inserted into the inside of the liquid injection pipe.

[0009] Furthermore, the stirring mechanism includes a U-shaped motor mounting bracket fixedly installed on the top surface of the cover, and a motor is fixedly installed on the top surface of the U-shaped motor mounting bracket. The output end of the motor is fixedly connected to a coupling, and the output end of the motor is fixedly connected to a rotating shaft through the coupling. The rotating shaft and the cover are rotatably installed, and a stirring paddle is fixedly sleeved on the surface of the rotating shaft.

[0010] Furthermore, the sealing element includes a sealing plate rotatably inserted into two sets of L-shaped side frames, a threaded rod is fixedly installed on the end face of the sealing plate, a limiting ring is fixedly sleeved on the surface of the threaded rod, and a counterweight ring is threadedly sleeved on the surface of the threaded rod.

[0011] Furthermore, the reagent injection assembly includes a pipette, and a rubber ring is fixedly sleeved on the surface of the pipette. A funnel is fixedly installed at the top end of the pipette, and when the pipette is inserted into the inside of the injection tube, the surface of the rubber ring is in contact with the inner wall of the injection tube.

[0012] Furthermore, several sets of the stirring paddles are equidistantly arranged on the surface of the rotating shaft, and the rotating shaft and several sets of stirring paddles are located inside the reaction vessel.

[0013] Furthermore, the rubber ring is made of rubber material and is slidably disposed with respect to the inner wall of the injection tube.

[0014] The beneficial effects of this utility model are as follows:

[0015] The reaction vessel and its cover are secured together using bolts. An agitator stirs the polymerization inhibitor produced inside the reaction vessel. When liquid reagents need to be added, the reagent injection assembly is inserted into the injection tube. Pushing the reagent injection assembly vertically contacts the end seal, causing it to flip and position its bottom inside the reaction vessel. Liquid reagents are then injected through the assembly. After injection, the assembly is pulled out vertically, allowing the seal to fit tightly against the end of the injection tube under the action of its counterweight. This simplifies the operation and improves ease of use when injecting liquid reagents. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0017] Figure 2 This is a front sectional view of the present invention;

[0018] Figure 3 This is a partial schematic diagram of the present invention;

[0019] Figure 4 This is a schematic diagram of the reagent injection state of this utility model;

[0020] Figure 5 This is a utility model Figure 4 A sectional view;

[0021] Figure 6 This is a schematic diagram of the sealing element of this utility model;

[0022] Reference numerals in the attached drawings: 1. Reaction vessel; 2. Cover; 3. Stirring mechanism; 301. U-shaped motor mounting bracket; 302. Motor; 303. Coupling; 304. Rotating shaft; 305. Stirring paddle; 4. Injection pipe; 41. L-shaped side frame; 5. Sealing element; 501. Sealing plate; 502. Threaded rod; 503. Limiting ring; 504. Counterweight ring; 6. Reagent injection assembly; 601. Pipette; 602. Funnel; 603. Rubber ring. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0024] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0026] In the description of the embodiments of this utility model, it should be noted that the terms "inner", "outer", "upper", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0027] like Figures 1 to 6As shown, a liquid reagent injection device for producing a polymerization inhibitor includes a reaction vessel 1 and a cover 2 fixedly installed on the top of the reaction vessel 1 by bolts. An agitator 3 is fixedly installed on the top surface of the cover 2. The stirring part of the agitator 3 is located inside the reaction vessel 1. A liquid injection pipe 4 is fixedly inserted into the top surface of the cover 2. Two sets of L-shaped side brackets 41 are fixedly installed on the surface of the liquid injection pipe 4 near the bottom end, and sealing elements 5 are rotatably installed on the two sets of L-shaped side brackets 41. A reagent injection assembly 6 is inserted into the inside of the liquid injection pipe 4. More specifically, the reaction vessel 1 and the cover 2 are fixedly installed by bolts, and the polymerization inhibitor produced inside the reaction vessel 1 is stirred by the stirring mechanism 3. When it is necessary to add liquid reagent to the inside of the reaction vessel 1, the reagent injection component 6 is inserted into the inside of the injection pipe 4. The reagent injection component 6 is pushed vertically so that the end seal 5 of the reagent injection component 6 contacts and flips, so that the bottom end of the reagent injection component 6 is inside the reaction vessel 1. The liquid reagent is injected into the inside of the reaction vessel 1 through the reagent injection component 6. After the liquid reagent is injected, the reagent injection component 6 is pulled out vertically so that the sealing part of the seal 5 is tightly fitted with the end of the injection pipe 4 under the action of its counterweight.

[0028] The stirring mechanism 3 includes a U-shaped motor mounting bracket 301 fixedly installed on the top surface of the cover 2, and a motor 302 fixedly installed on the top surface of the U-shaped motor mounting bracket 301. The output end of the motor 302 is fixedly connected to a coupling 303, and the output end of the motor 302 is fixedly connected to a rotating shaft 304 through the coupling 303. The rotating shaft 304 and the cover 2 are rotatably mounted, and a stirring paddle 305 is fixedly sleeved on the surface of the rotating shaft 304. More specifically, the motor 302 drives the rotating shaft 304 and the stirring paddle 305 to rotate through the coupling 303, thereby stirring the flame retardant inside the reaction vessel 1.

[0029] The sealing element 5 includes a sealing plate 501 rotatably inserted into two sets of L-shaped side frames 41. A threaded rod 502 is fixedly installed on the end face of the sealing plate 501, and a limiting ring 503 is fixedly sleeved on the surface of the threaded rod 502. A counterweight ring 504 is threadedly sleeved on the surface of the threaded rod 502. More specifically, by threading the counterweight ring 504 onto the surface of the threaded rod 502, the top surface of the sealing plate 501 is tightly fitted with the bottom end of the injection tube 4 under the action of gravity of the counterweight ring 504, thereby sealing the bottom end of the injection tube 4. When the reagent injection assembly 6 is inserted, the bottom end of the reagent injection assembly 6 contacts the top surface of the sealing plate 501, pushing the sealing plate 501 to flip so that the bottom end of the reagent injection assembly 6 is located inside the reaction vessel 1.

[0030] The reagent injection assembly 6 includes a pipette 601, with a rubber ring 603 fixedly fitted onto its surface. A funnel 602 is fixedly installed at the top of the pipette 601. When the pipette 601 is inserted into the injection tube 4, the surface of the rubber ring 603 adheres to the inner wall of the injection tube 4. More specifically, by inserting the pipette 601 into the injection tube 4, the rubber ring 603 on the surface of the pipette 601 adheres to the inner wall of the injection tube 4, thereby sealing the gap between the pipette 601 and the injection tube 4 when liquid reagents are injected into the reaction vessel 1, preventing external impurities from entering the interior of the reaction vessel 1.

[0031] Several sets of stirring paddles 305 are equidistantly arranged on the surface of the rotating shaft 304, and the rotating shaft 304 and the several sets of stirring paddles 305 are located inside the reaction vessel 1. More specifically, the several sets of stirring paddles 305 equidistantly arranged on the surface of the rotating shaft 304 enable the materials inside the reaction vessel 1 to be stirred.

[0032] The rubber ring 603 is made of rubber material and is slidably disposed with respect to the inner wall of the injection tube 4. More specifically, the rubber ring 603 on the surface of the pipette 601 enables the gap between the pipette 601 and the injection tube 4 to be sealed when the pipette 601 is inserted into the injection tube 4.

[0033] In summary: the reaction vessel 1 and the cover 2 are fixedly installed by bolts; the polymerization inhibitor produced inside the reaction vessel 1 is agitated by the stirring mechanism 3; when liquid reagent needs to be added to the inside of the reaction vessel 1, the reagent injection component 6 is inserted into the inside of the injection pipe 4, and the reagent injection component 6 is pushed vertically so that the end seal 5 of the reagent injection component 6 contacts, causing the seal 5 to flip over, so that the bottom end of the reagent injection component 6 is inside the reaction vessel 1, and the liquid reagent is injected into the inside of the reaction vessel 1 through the reagent injection component 6. After the liquid reagent is injected, the reagent injection component 6 is pulled out vertically, so that the sealing part of the seal 5 is tightly fitted with the end of the injection pipe 4 under the action of its counterweight.

[0034] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A liquid reagent injection device for producing a polymerization inhibitor, characterized in that, The reaction vessel includes a reaction vessel (1) and a cover (2) fixedly mounted on the top of the reaction vessel (1) by bolts. A stirring mechanism (3) is fixedly mounted on the top surface of the cover (2). The stirring part of the stirring mechanism (3) is located inside the reaction vessel (1). A liquid injection pipe (4) is fixedly inserted into the top surface of the cover (2). Two sets of L-shaped side brackets (41) are fixedly mounted on the surface of the liquid injection pipe (4) near the bottom end. A sealing element (5) is rotatably mounted on the two sets of L-shaped side brackets (41). A reagent injection assembly (6) is inserted into the inside of the liquid injection pipe (4).

2. The liquid reagent injection device for producing polymerization inhibitors according to claim 1, characterized in that, The stirring mechanism (3) includes a U-shaped motor mounting bracket (301) fixedly installed on the top surface of the cover (2), and a motor (302) is fixedly installed on the top surface of the U-shaped motor mounting bracket (301). The output end of the motor (302) is fixedly connected to a coupling (303), and the output end of the motor (302) is fixedly connected to a rotating shaft (304) through the coupling (303). The rotating shaft (304) and the cover (2) are rotatably installed, and a stirring paddle (305) is fixedly sleeved on the surface of the rotating shaft (304).

3. The liquid reagent injection device for producing polymerization inhibitors according to claim 1, characterized in that, The sealing element (5) includes a sealing plate (501) that is rotatably inserted into two sets of L-shaped side frames (41). A threaded rod (502) is fixedly installed on the end face of the sealing plate (501), and a limiting ring (503) is fixedly sleeved on the surface of the threaded rod (502). A counterweight ring (504) is threadedly sleeved on the surface of the threaded rod (502).

4. The liquid reagent injection device for producing polymerization inhibitors according to claim 3, characterized in that, The reagent injection assembly (6) includes a pipette (601), and a rubber ring (603) is fixedly sleeved on the surface of the pipette (601). A funnel (602) is fixedly installed at the top of the pipette (601), and when the pipette (601) is inserted into the inside of the injection tube (4), the surface of the rubber ring (603) is in contact with the inner wall of the injection tube (4).

5. The liquid reagent injection device for producing polymerization inhibitors according to claim 2, characterized in that, Several sets of stirring paddles (305) are equidistantly arranged on the surface of the rotating shaft (304), and the rotating shaft (304) and several sets of stirring paddles (305) are located inside the reaction vessel (1).

6. The liquid reagent injection device for producing polymerization inhibitors according to claim 4, characterized in that, The rubber ring (603) is made of rubber material and is slidably disposed with respect to the inner wall of the injection tube (4).

Images