Rapidly detachable discharge pipe for printing ink polyurethane resin

Abstract

The utility model discloses a quickly detachable discharge pipe for printing ink polyurethane resin, and relates to the technical field of resin production. The reaction kettle comprises a kettle body, a kettle cover is mounted at the top end of the kettle body, stirring blades are mounted in the middle in the kettle body, at least two liquid inlet pipes are mounted on the side face of the top end of the kettle cover, liquid outlet pipes are detachably connected into the liquid inlet pipes, included angles are formed between the liquid outlet pipes and the horizontal direction, and a plurality of liquid outlet holes are evenly distributed in the bottom ends of the liquid outlet pipes. The apertures of the liquid outlets are sequentially increased along the direction far away from the stirring blades, and the liquid outlets are used for uniformly guiding liquid into the kettle body. According to the reaction kettle, the liquid inlet pipe is arranged at the top end of the reaction kettle, and the uniformly changing liquid outlets are uniformly formed in the bottom of the liquid inlet pipe to adapt to the flow velocity change of inlet liquid, so that the inlet liquid is uniformly added into the reaction kettle, the reaction in the reaction kettle is more uniform, and the quality of a reaction finished product is improved.

Description

Technical Field

[0001] This utility model belongs to the field of resin production technology, and specifically relates to a quick-detachable discharge pipe for polyurethane resin ink. Background Technology

[0002] In the production process of polyurethane resin for inks, especially when synthesized using the two-reactor method, a catalytic liquid needs to be added dropwise to the reactor. The catalytic liquid is discharged from the catalytic tank and enters the reactor to catalyze and accelerate the synthesis reaction in the reactor.

[0003] The discharge pipe of the existing catalytic tank, after entering the reactor, is a single-port pipe that extends into the reactor. The position where the catalyst drips is fixed. Although the reaction liquid is stirred in the reactor, the stirred catalyst is still concentrated in the annular area, and there is a lack of catalyst on both sides of the drop point.

[0004] The drawback of this technical solution is that when the existing catalytic tank discharge pipe enters the reactor, the fixed position of the dripping catalytic liquid causes the reaction liquid in the reactor to react violently at the annular position where the catalytic liquid falls, while the annular directions on both sides of the catalytic liquid fall point are not fully reacted due to insufficient addition of catalytic liquid, resulting in an uneven reaction in the reactor.

[0005] No effective solutions have yet been proposed to address the problems in the relevant technologies. Utility Model Content

[0006] The purpose of this utility model is to provide a quick-detachable discharge pipe for polyurethane resin ink. The technical problem to be solved is as follows: When adding catalyst liquid, the existing catalytic tank discharge pipe extending into the reactor has a fixed addition position, which leads to uneven reaction of the reaction liquid in the reactor.

[0007] The objective of this utility model can be achieved through the following technical solutions:

[0008] A quick-detachable discharge pipe for polyurethane resin ink includes a vessel body with a lid at the top. A stirring blade is installed in the middle of the interior of the vessel body. At least two inlet pipes are installed on the side of the top of the lid. An outlet pipe is detachably connected inside the inlet pipe. The outlet pipe forms an angle of 5 to 15 degrees with the horizontal direction and has multiple outlet holes evenly arranged at its bottom. The diameter of each outlet hole increases sequentially in the direction away from the stirring blade. Each outlet hole is used to uniformly guide liquid into the interior of the vessel body.

[0009] As a further embodiment of this utility model: the inner port of the liquid inlet pipe is adapted to the shape of the inner wall of the vessel lid, and the liquid outlet pipe extends into the interior of the vessel body along the central axis of the liquid inlet pipe.

[0010] As a further embodiment of this utility model: the outlet pipe is fixedly connected to an outlet at the port located inside the vessel body, and the outlet direction of the outlet is downward along the central axis of the outlet pipe and is gradually narrowing.

[0011] As a further embodiment of this utility model: the flanges on the outer sides of the inlet pipe and the outlet pipe are the same shape and fit together, and a positioning groove is provided at the top of each of the two flanges. The inner diameter of the inlet pipe is larger than the outer diameter of the outlet pipe, and the outlet port does not intersect with the extension surface of the inner side of the inlet pipe.

[0012] As a further embodiment of this utility model: the vertical central plane of the liquid outlet pipe is parallel to the vertical central plane of the stirring blade stirring shaft, and the distance between the end of the liquid outlet pipe and the side wall of the adjacent side of the vessel body is less than the inner radius of the vessel body.

[0013] As a further embodiment of this invention, the two outlet pipes are kept far apart from each other.

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

[0015] 1. By installing an inlet pipe at the top of the reactor lid and tilting it downwards, while simultaneously installing an outlet pipe for adding reactants into the reactor inside the inlet pipe, and evenly opening outlet holes at the bottom of the outlet pipe extending into the reactor, with each outlet hole decreasing in size sequentially along the direction of the stirring blades, the additive is injected into the reactor through a gradually decreasing flow rate. This ensures that the gradually decreasing outlet holes evenly and uniformly distribute the additive to each circumferential stirring layer within the reactor, resulting in a uniform and equal amount of additive being added to each transverse stirring area. The technical advantage lies in preventing the additive from falling to a single point. Furthermore, the gradual change in outlet hole diameter adapts to the varying flow rate during additive addition, ensuring that each circumferential layer of the stirred liquid receives a uniform amount of reactants, thus making the reaction more uniform and improving the quality of the final product.

[0016] 2. By installing the outlet pipe in a direction offset from the stirring radius of the reactor body, accidental contact with the stirring blades and shaft during installation is avoided. A spare outlet pipe is installed at the top of the reactor body. This allows for easy cleaning of the outlet pipe without interrupting the reaction. Furthermore, the outlet of the outlet pipe is angled downwards towards the stirring shaft, and its diameter is smaller than the inner diameter of the inlet pipe. This facilitates both the final discharge of liquid and disassembly. The aim is to ensure uniform liquid addition while maintaining continuous reaction within the reactor through convenient disassembly and assembly and the use of a spare pipe, thereby improving production efficiency. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a side view of the present invention;

[0020] Figure 3 This is a partial cross-sectional view of the present invention;

[0021] Figure 4 This is a half-sectional view of the discharge pipe of this utility model;

[0022] Figure 5 This is a utility model Figure 4 Enlarged detail view of point A in the middle;

[0023] Figure 6 This is a utility model Figure 4 A magnified view of the details at point B in the middle.

[0024] In the diagram: 1. Vessel body; 2. Vessel lid; 3. Stirring blade; 4. Liquid inlet pipe; 5. Liquid outlet pipe; 6. Liquid outlet hole; 7. Liquid outlet; 8. Positioning groove. Detailed Implementation

[0025] 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 scope of protection of the present utility model.

[0026] like Figures 1 to 6 As shown, a quick-detachable discharge pipe for polyurethane resin ink includes a vessel body 1, a vessel cover 2 installed at the top of the vessel body 1, a stirring blade 3 installed in the middle of the interior of the vessel body 1, and two liquid inlet pipes 4 installed on the side of the top of the vessel cover 2. A liquid outlet pipe 5 is detachably connected inside the liquid inlet pipes 4, and the liquid outlet pipe 5 is at a 10-degree angle to the horizontal (see...). Figure 2 The bottom end is evenly distributed with multiple liquid outlet holes 6, and each liquid outlet hole 6 increases in size in the direction away from the stirring blade 3. Each liquid outlet hole 6 is used to uniformly introduce the catalyst liquid into the vessel body 1.

[0027] It should be noted that the inlet pipe 4 is fixedly connected to the reactor lid 2, and the outlet pipe 5 is the liquid inlet pipe of the catalytic tank connected to the reactor, which needs to be frequently disassembled and cleaned; multiple fastening bolts are installed around the reactor body 1 and the reactor lid 2, a stirring motor is installed at the top of the reactor lid 2, and the output shaft of the stirring motor is fixedly connected to the adjacent end of the stirring blade 3. Four support legs are evenly installed on the outer periphery of the reactor body 1, and the bottom of the reactor body 1 is an arc-shaped structure for easy material discharge, and a discharge valve is installed. In particular, a flow control valve is installed on the pipe that connects to the outlet pipe 5 on the side of the catalytic tank to control the overall flow rate of the catalytic liquid, so as to regulate the overall initial velocity of the catalytic liquid entering the reactor body 1.

[0028] Since the outlet pipe 5 is sleeved inside the inlet pipe 4 and the flanges at the ends overlap, the inlet pipe 4 and the outlet pipe 5 have the same angle with the horizontal direction and gradually decrease along the oblique angle close to the stirring blade 3, which facilitates the diversion of the catalyst liquid. In addition, the liquid diverted in the outlet pipe 5 includes, but is not limited to, the catalyst liquid, and can also be a solvent, alcohol or acid or other reactants.

[0029] like Figures 2 to 6 As shown, the inner port of the inlet pipe 4 is adapted to the shape of the inner wall of the vessel cover 2, and the outlet pipe 5 extends into the interior of the vessel body 1 along the central axis of the inlet pipe 4.

[0030] The outlet pipe 5 is fixedly connected to the outlet port 7 at the port inside the vessel body 1. The outlet port 7 extends downward along the central axis of the outlet pipe 5 and is gradually narrowed.

[0031] The flanges on the outside of the inlet pipe 4 and the outlet pipe 5 are the same shape and fit together. The top of both flanges is provided with positioning grooves 8. The inner diameter of the inlet pipe 4 is larger than the outer diameter of the outlet pipe 5, and the outlet port 7 does not intersect with the inner extension surface of the inlet pipe 4, which makes it easy to pull out the outlet pipe 5.

[0032] It should be noted that the inlet pipe 4 is only fixedly connected to the outside of the vessel cover 2 and does not extend further inside the vessel cover 2, so as to avoid obstructing the addition of catalyst to the outlet pipe 5;

[0033] When the catalyst is added dropwise into the vessel 1 through the outlet pipe 5, a portion gradually descends through the outlet holes 6 at its bottom, while the remainder is discharged through the outlet port 7. Since the outlet pipe 5 is angled downwards to facilitate liquid intake, the catalyst liquid, after leaving the catalytic tank, experiences a gradual increase in flow velocity as it flows closer to the stirring blade 3 due to its own gravity and the higher hydraulic pressure at lower levels. To address this, the outlet holes 6 on the slower-flowing side of the outlet pipe 5 near the vessel 1 are enlarged, while the outlet holes 6 on the faster-flowing side near the stirring blade 3 are reduced. This ensures that the amount of catalyst liquid flowing out of each outlet hole 6 is more consistent. The purpose of this design is to avoid the single-pipe, single-outlet addition of catalyst liquid found in existing outlet pipes 5. Furthermore, by adjusting the orifice diameter of each outlet hole 6, the amount of catalyst liquid dispersed into the circumferential reaction mixture within the vessel 1 is made more consistent, further improving the uniformity of the reaction and thus enhancing the reaction quality.

[0034] like Figure 3 and Figure 5 As shown, the vertical central plane of the outlet pipe 5 is parallel to the vertical central plane of the stirring shaft of the stirring blade 3, and the distance between the end of the outlet pipe 5 and the side wall of the adjacent side vessel 1 is less than the inner radius of the vessel 1.

[0035] The two outlet pipes 5 are installed at different angles and are far apart from each other;

[0036] It should be noted that since the condition of the outlet pipe 5 after installation cannot be viewed from outside the reactor, its installation position is offset from the central axis of the stirring blade 3. This is to reduce structural interference between the outlet pipe 5 and the stirring shaft of the stirring blade 3 in the event of a malfunction, thereby improving the safety of equipment operation. Furthermore, the position of the outlet port 7 at the end of the outlet pipe 5 is close to the stirring shaft of the stirring blade 3, but does not exceed the stirring radius. This allows the catalytic liquid at the end to fall to the inside of the stirring blade 3 by gravity, facilitating subsequent centralized and dispersed stirring. In addition, since both outlet pipes 5 are detachable structures, and one is in a spare state, they are installed and positioned using the positioning groove 8, which has the same structure as the flange of the inlet pipe 4, to avoid the oblique installation of the internal outlet hole 6. When it is necessary to clean one of the outlet pipes 5, the spare outlet pipe 5 on the other side can be used, thus enabling the equipment to have the ability to react uniformly over a long period of time.

[0037] The above description provides a detailed account of one embodiment of the present invention. However, this description is merely a preferred embodiment and should not be construed as limiting the scope of the present invention. All equivalent variations and improvements made within the scope of the present invention should still fall within the patent coverage of the present invention.

Claims

1. A quick-detachable discharge pipe for polyurethane resin ink, comprising a vessel body (1), a vessel cover (2) mounted on the top of the vessel body (1), and a stirring blade (3) mounted in the middle of the interior of the vessel body (1), characterized in that, At least two liquid inlet pipes (4) are installed on the top side of the lid (2). The liquid inlet pipe (4) is detachably connected to the liquid outlet pipe (5). The liquid outlet pipe (5) is at an angle of 5 to 15 degrees to the horizontal direction, and multiple liquid outlet holes (6) are evenly arranged at the bottom end. The diameter of each liquid outlet hole (6) increases sequentially in the direction away from the stirring blade (3). Each liquid outlet hole (6) is used to uniformly guide liquid into the interior of the lid (1).

2. The quick-detachable discharge tube for polyurethane resin ink according to claim 1, characterized in that, The inner port of the inlet pipe (4) is adapted to the shape of the inner wall of the vessel cover (2), and the outlet pipe (5) extends along the central axis of the inlet pipe (4) into the interior of the vessel body (1).

3. The quick-detachable discharge tube for polyurethane resin ink according to claim 1, characterized in that, The outlet pipe (5) is fixedly connected to the outlet port (7) at the port inside the vessel body (1). The outlet port (7) extends downward along the central axis of the outlet pipe (5) and is gradually narrowed.

4. The quick-detachable discharge tube for polyurethane resin ink according to claim 3, characterized in that, The flanges on the outside of the inlet pipe (4) and the outlet pipe (5) are the same shape and fit together. The top of each flange is provided with a positioning groove (8). The inner diameter of the inlet pipe (4) is larger than the outer diameter of the outlet pipe (5), and the outlet port (7) does not intersect with the extension surface of the inner side of the inlet pipe (4).

5. The quick-detachable discharge tube for polyurethane resin ink according to claim 1, characterized in that, The vertical central plane of the outlet pipe (5) is parallel to the vertical central plane of the stirring shaft of the stirring blade (3), and the distance between the end of the outlet pipe (5) and the side wall of the adjacent side of the vessel body (1) is less than the inner radius of the vessel body (1).

6. The quick-detachable discharge tube for polyurethane resin ink according to claim 1, characterized in that, The two outlet pipes (5) are far apart from each other.

Images