CN209597132U - Drop tube and adhesive preparation facilities - Google Patents

Abstract

The utility model belongs to adhesive preparation facilities technical field, is related to a kind of drop tube and adhesive preparation facilities.Drop tube provided by the utility model, including the baffle that tube body is added dropwise and is arranged on the dropwise addition tube body；The baffle includes first gear board group and second gear board group, and one end of the first gear board group connect with the side wall that tube body is added dropwise and forms acute angle；The second gear board group includes multiple spaced second baffles, and at least part of the second baffle connect with the inner face of first gear board group and forms obtuse angle angle.The utility model can be easy to clean to avoid the dead glue of residual of reaction kettle inner wall, environmental-friendly, reduces waste, and structure is simple, at low cost.

Description

Dropping pipe and adhesive preparation device

Technical Field

The utility model belongs to the technical field of gluing agent preparation facilities, particularly, relate to a dropwise add pipe and gluing agent preparation facilities.

Background

Adhesives, which may also be referred to as adhesives or simply glues, are substances that hold objects to be bonded together by adhesion. In recent years, with the rapid development of the adhesive industry, the UV light anti-adhesive protective film has been widely applied to surface protection of semiconductors, lithium batteries, and various modules. However, in scientific research and actual production, the phenomena of surface gum residue and degumming inevitably occur, and how to remove the surface gum residue and degumming in an efficient and environment-friendly manner becomes a problem which is more and more concerned by people.

With the continuous improvement of the adhesive technology, the production process is changed, and in some processes, some materials need to be added into a reaction kettle in a dropwise manner. However, the conventional dropping tube mainly suffers from the following problems during the dropping process: (1) when the dropwise add material passes through the dropwise add pipe dropwise add, partly feed liquid can be along the slow trickling of reation kettle inner wall get off, because glass cauldron inner wall temperature ratio is higher, can take place the reaction and become to die glue on the glass cauldron after feed liquid dropwise add a period, and then a large amount of adhesions are on the reation kettle inner wall. (2) The glue-dead amount of the inner wall of the reaction kettle can be relieved or reduced by extending the length of the existing dripping pipes, but the glue-dead amount cannot be completely avoided, and the glue-dead amount still remains on the inner wall of the reaction kettle; because the feed liquid is in the dropwise adding process, the feed liquid can be thrown towards the inner wall of the glass kettle at the moment when leaving the bottom of the dropwise adding pipe, the feed liquid can splash onto the inner wall of the glass kettle, and a certain amount of dead glue is formed on the inner wall of the reaction kettle in time.

In view of this, the utility model is especially provided.

SUMMERY OF THE UTILITY MODEL

A first object of the utility model is to provide a dropping pipe can avoid the glue of dying of remaining of reation kettle inner wall, washs easily, and environment-friendly has reduced the waste, and simple structure, with low costs, can overcome above-mentioned problem or solve above-mentioned technical problem at least partially.

A second object of the utility model is to provide an adhesive preparation facilities, contain the dropwise add pipe, can avoid leaking glue polluted environment and phenomenon such as die glue, the environmental friendly washs easily, has reduced the waste, simple structure, and is with low costs.

In order to achieve the above object, the utility model adopts the following technical scheme:

according to one aspect of the utility model, the utility model provides a dropping pipe, which comprises a dropping pipe body and a baffle plate arranged on the dropping pipe body;

the baffle comprises a first baffle group and a second baffle group, and one end of the first baffle group is connected with the side wall of the dropping pipe body to form an acute included angle;

the second baffle group comprises a plurality of second baffles which are arranged at intervals, and at least one part of each second baffle is connected with the inner end face of the corresponding first baffle group to form an obtuse included angle.

As a further preferable technical scheme, the angle of the acute included angle is less than or equal to 85 degrees.

As a further preferred technical scheme, the included angle of the obtuse angle is 95-160 degrees.

As a further preferred technical solution, the first baffle group comprises a first baffle; or,

first baffle group includes that a plurality of intervals encircle the setting and are in drip pipe body lateral wall first baffle all around.

As a further preferable technical scheme, a plurality of second baffles are arranged below the discharge hole of the dropping pipe body at intervals and in parallel;

and/or the diameters or the lengths of the plurality of second baffles are sequentially increased from top to bottom.

In a more preferable embodiment, the second baffle is flat or annular.

As a further preferable technical scheme, the dropping pipe body and the baffle are made of the same material.

As a further preferred technical scheme, the dropping pipe body comprises a feeding section, a middle section and a discharging section which are sequentially communicated, and the baffle is arranged on the discharging section of the dropping pipe body;

as a further preferable technical scheme, the feeding section is detachably connected with the middle section, and the outer diameter of the lower end of the feeding section is matched with the inner diameter of the upper end of the middle section;

and/or the middle section is detachably connected with the discharging section; or the middle section and the discharging section are integrally formed.

According to another aspect of the present invention, the present invention provides an adhesive preparation apparatus, comprising a reaction kettle and the above-mentioned dropping pipe;

the baffle set up in the reation kettle, the feed inlet of dropwise add pipe stretches out reation kettle.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1. the utility model provides a dropping pipe has set up the baffle on dropping pipe body, this baffle has included first baffle group and second baffle group, set up with the cooperation of dropping pipe body through first baffle group and second baffle group, can avoid the monomer to have partial monomer to form because of sputtering the polymerization of reation kettle inner wall and remain the phenomenon emergence of dying glue at the in-process of dropwise add, through the setting of baffle promptly, the feed liquid that makes the dropwise add get off flows down along the baffle to avoid the monomer to spatter the cauldron wall and form to die to glue and remain. Further, through the improvement to the structure of reation kettle feeding dropwise add pipe, not only avoided the remaining of cauldron wall to die to glue, make the washing reation kettle that can relax after the reaction is accomplished at every turn, wash labour saving and time saving, the work efficiency is improved, and a large amount of cleaning solvent has been saved, the pollution of a large amount of cleaning solvent or hourglass glue to the environment has been avoided, the production environment has been improved, and the addition of dropwise add feed liquid has been guaranteed, avoid extravagant, save raw materials cost, and further ensured the quality of making the product.

2. Through being connected first baffle group and the lateral wall of dropwise add pipe body are acute angle contained angle, be obtuse angle contained angle with second baffle group and first baffle group and be connected, the messenger's dropwise add that can be better feed liquid flows down along first baffle group and second baffle group, avoids the feed liquid to sputter on the reation kettle inner wall.

3. The dripping pipe has the advantages of simple structure, easy processing and manufacturing, convenient operation, maintenance and low cost, can be widely applied to the field of preparation of adhesives, and is easy to popularize and apply.

4. The utility model provides an gluing agent preparation facilities includes reation kettle and above-mentioned dropwise add pipe, therefore has the same advantage with above-mentioned dropwise add pipe at least, and device production stability is good promptly, and is high-efficient, convenient, has avoided forming to die to glue, and it is easy to wash, efficient, and environment-friendly, the raw materials cost is low, maintains low cost.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.

Fig. 1 is a schematic structural view of a dropping pipe provided by the embodiment of the present invention;

fig. 2 is a schematic structural diagram of a baffle according to an embodiment of the present invention;

FIG. 3 is a schematic structural view of a dropping pipe provided in comparative example 1 of the present invention;

fig. 4 is a schematic structural diagram of the dropping pipe provided by the comparative example 2 of the present invention.

Icon: 1-dropping pipe body; 11-feed liquid inlet; 12-a discharge hole; 101-a feeding section; 102-an intermediate section; 103-discharging section; 2-a baffle plate; 201-a first set of baffles; 202-a second baffle group; an alpha-acute included angle; beta-obtuse included angle.

Detailed Description

The technical solutions of the present invention will be described clearly and completely below, and it should be apparent that the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In a first aspect, a drip tube is provided in at least one embodiment, including a drip tube body and a baffle disposed on the drip tube body;

the baffle comprises a first baffle group and a second baffle group, and one end of the first baffle group is connected with the side wall of the dropping pipe body to form an acute included angle;

the second baffle group comprises a plurality of second baffles which are arranged at intervals, and at least one part of each second baffle is connected with the inner end face of the corresponding first baffle group to form an obtuse included angle.

This dropwise add pipe body has included dropwise add pipe body and baffle, its baffle has included first baffle group and second baffle group, cooperation through first baffle group and second baffle group and dropwise add pipe body sets up, it has avoided the monomer to have partial monomer to form because of sputtering the polymerization of reation kettle inner wall and remain the phenomenon emergence of dying glue at the in-process of dropwise add, make reation kettle's washing labour saving and time saving, and work efficiency is improved, and a large amount of cleaning solvent has been saved, the pollution of a large amount of cleaning solvent or hourglass glue to the environment has been avoided, the production environment has been improved, and the addition of dropwise add feed liquid has been guaranteed, avoid extravagant, save raw materials cost, and further ensured the quality of making the product.

Furthermore, through being connected acute angle contained angle with the lateral wall of first baffle group and dropwise add pipe body, be connected obtuse angle contained angle with second baffle group and first baffle group, the messenger's dropwise add that can be better feed liquid flows down along first baffle group and second baffle group, avoids the feed liquid to sputter to form on the reation kettle inner wall and dies to glue and remain.

It is understood that an acute angle is an angle less than 90 degrees and greater than 0 degrees and an obtuse angle is an angle less than 180 degrees and greater than 90 degrees.

According to the utility model, the first baffle group is connected with the side wall of the dropping pipe body, and an acute angle included angle is formed between the first baffle group and the side wall of the dropping pipe body, so that left and right or annularly splashed feed liquid can be prevented from splashing on the kettle wall; the second baffle group is connected with the first baffle group, an obtuse included angle is formed between the second baffle group and the first baffle group, the second baffle group comprises a plurality of second baffles which are arranged at intervals from top to bottom, so that the material liquid can fly outwards to the second baffle at the top when dripping from the bottom of the dropper, and the splashed material liquid can fly outwards to the second baffle below the material liquid when flowing downwards again from the second baffle at the top, so that the amount of the material liquid flowing downwards can be reduced in sequence, and the material liquid is further prevented from splashing on the kettle wall. Thereby through the cooperation setting of first baffle group and second baffle group to and connection angle's adjustment, guaranteed effectively that dropwise add feed liquid can not splash to the reation kettle inner wall and form and die to glue.

The inner end surface of the first baffle group means an end surface of the first baffle group close to the outer side wall surface of the dropping pipe body, or an end surface of the first baffle group forming an acute included angle with the dropping pipe body.

The second baffle group comprises a plurality of second baffles which are arranged at intervals and are respectively connected with the first baffle group. By "at least a portion of the second baffle" is meant that at least one end, at least one face, or at least one point of the second baffle is connected to the first baffle group.

In a preferred embodiment, the acute angle is not greater than 85 °, preferably 20 to 60 °, more preferably 30 to 45 °, and more preferably 30 °.

According to the utility model discloses, the acute angle contained angle between first baffle group and the dropwise add pipe body can be less than or equal to 85 acute angle contained angle, and the angle of preferred acute angle contained angle is 20 ~ 60, more preferably 30, and typical but not restrictive for example can be 20 °, 25 °, 30 °, 35 °, 40 °, 45 °, 50 °, 55 °, 60 °, 70 °, 80 ° or 85 °. The proper acute included angle can better prevent the feed liquid from splashing on the kettle wall, so that the dripped feed liquid can fall smoothly.

In a preferred embodiment, the obtuse included angle is 95 to 160 °, preferably 120 to 150 °, and more preferably 120 °.

According to the utility model discloses, the obtuse included angle between first baffle group and the second baffle can be 95 ~ 160 obtuse included angles, and the angle of preferred obtuse included angle is 120 ~ 150, more preferably 120, and typical but not restrictive for example can be 95 °, 100 °, 105 °, 110 °, 115 °, 120 °, 125 °, 130 °, 140 °, 150 ° or 160 °. The proper obtuse included angle can better prevent the feed liquid from splashing on the kettle wall, so that the dripped feed liquid can fall smoothly.

Through the angle of adjusting above-mentioned acute angle contained angle and obtuse angle contained angle, the dropwise add feed liquid of messenger that can be better flows down along first baffle group and second baffle group, guarantees the cleanness of reation kettle inner wall, avoids the feed liquid to sputter and forms on the reation kettle inner wall and die to glue and remain, and convenient cleanness reduces extravagantly, ensures to drip the volume of adding, guarantees the product glue quality that makes.

In a preferred embodiment, the first baffle group comprises a first baffle; or,

the first baffle group comprises a plurality of first baffles which are arranged around the side wall of the dropping pipe body at intervals;

preferably, one end of the first baffle group is detachably connected or fixedly connected with the side wall of the dropping pipe body, preferably fixedly connected, and further preferably fixedly connected by welding;

preferably, the other end of the first baffle group is connected with the second baffle; or the other end of the first baffle group is a free end.

According to the utility model discloses, first baffle group can only include a first baffle, also can include a plurality of first baffles, and the setting that a plurality of first baffle intervals encircle is around dropwise add pipe body lateral wall. The specific number of the first baffle plates is not particularly limited, and may be suitably adjusted according to the size of the dropping pipe body or the size of the reaction vessel and the process requirements, and for example, one, two, three, four, five or six first baffle plates may be provided.

The specific shape of the first baffle is not particularly limited, and a structural shape commonly used in the art, for example, a flat plate shape, may be employed. The one end of first baffle is the upper end promptly and is connected with the lateral wall of dropwise add pipe body, and the other end of first baffle is the lower extreme promptly and can be connected with the second baffle, can not be connected with the second baffle, is the free end.

It can be understood that the connection mode of the first baffle plate and the side wall of the dropping pipe body can be detachable connection or fixed connection, the specific detachable connection mode is not particularly limited, and common connection modes in the field, such as sleeving by a connecting piece or clamping by a clamping piece, can be adopted. The preferred carries out fixed connection with first baffle and dropwise add pipe body lateral wall, and fixed connection's mode is preferred preferably to be welded, simple structure like this, firm in connection, reliable, easy preparation, convenient operation, it is with low costs.

In a preferred embodiment, a plurality of the second baffles are arranged below the discharge port of the dropping pipe body in a spaced and parallel manner;

preferably, the diameters or lengths of the plurality of second baffles increase sequentially from top to bottom.

In a preferred embodiment, the second baffle is flat or annular.

According to the utility model discloses, second baffle group includes a plurality of second baffles, a plurality of second baffles separate and parallel setting to, a plurality of second baffles all are located the below of dropwise add pipe body discharge gate. A plurality of second baffles are sequentially arranged from top to bottom, the spacing distance between the first second baffle at the top and the discharge hole of the dripping pipe body and the distance between two adjacent second baffles are not specially limited, and in practical application, the second baffles can be adjusted according to actual conditions or process requirements. For example, the distance between the uppermost first baffle and the discharge port of the dropping pipe body can be 1-10 cm, and preferably 1-5 cm; the distance between two adjacent second baffles can be 1-10 cm, and preferably 1-2 cm. Therefore, the operation is convenient, the smooth reaction can be ensured, and the dropwise added feed liquid can be prevented from sputtering the inner wall of the reaction kettle.

The specific shape of the second baffle is not particularly limited, and a structural shape commonly used in the art, such as a simple flat plate shape or a ring shape, or other structural shapes well known in the art, may be used. The second baffle and the first baffle are preferably fixedly connected in a connecting mode, and are further preferably welded, so that the operation is convenient, the processing and the manufacturing are easy, and the connection is firm and reliable.

In a preferred embodiment, the dropping pipe body and the baffle are made of the same or different materials, preferably the same material;

preferably, the dropping pipe body and the baffle are made of glass or plastic, preferably glass.

According to the utility model discloses, the material of dropwise add pipe body and baffle can be the same also can be different, preferably adopts the same preparation material, makes things convenient for processing preparation like this, saves the cost. The dropping tube body and the baffle are made of materials including but not limited to glass or plastic, and other materials such as stainless steel and the like well known in the art can be adopted.

Preferably, the reaction kettle is a glass reaction kettle, and the dropping pipe body and the baffle are made of glass materials.

In a preferred embodiment, the dropping pipe body comprises a feeding section, a middle section and a discharging section which are communicated in sequence, and the baffle is arranged on the discharging section of the dropping pipe body;

preferably, the feeding section is detachably connected with the middle section, and the outer diameter of the lower end of the feeding section is matched with the inner diameter of the upper end of the middle section;

preferably, the middle section is detachably connected with the discharging section; or the middle section and the discharging section are integrally formed;

preferably, the length of the discharge section is greater than the total length of the feed section and the intermediate section.

It should be noted that the utility model discloses do not do special restriction to the concrete shape structure of dropwise add pipe body, this baffle is applicable to and cooperates the setting with any dropwise add pipe body of current.

Preferably, the dropping pipe body comprises a feeding section, a middle section and a discharging section which are sequentially communicated, the feeding section is provided with a feed liquid inlet, and the discharging section is provided with a discharging port; one end, namely the upper end, of the first baffle group is connected with the side wall of the discharging section of the dripping pipe body, and further, the upper end of the first baffle group is preferably connected with the side wall of the middle or middle lower part of the discharging section. The cross section of the outlet is preferably provided as an inclined slope.

Preferably, the lower extreme of feeding section can be dismantled with the upper end of interlude and be connected, and the lower extreme of interlude can be dismantled with the upper end of ejection of compact section and be connected or interlude and ejection of compact section are integrated into one piece. The lower extreme external diameter of feeding section and the upper end internal diameter looks adaptation of interlude mean, the lower extreme of feeding section can stretch into the upper end that makes feeding section and interlude link together to the interlude, and the lower extreme of feeding section also can break away from the interlude simultaneously, makes feeding section and interlude separate. Furthermore, the lower end of the feeding section and the upper end of the middle section can be ground glass, and a ground glass interface at the lower end of the feeding section extends into the ground glass at the upper end of the middle section.

Preferably, the length of the discharge section is greater than the total length of the feeding section and the middle section, the diameter of the discharge section is smaller than the diameter of the feeding section and the middle section, specific proportion is not limited, and the discharge section can be adjusted according to actual requirements. Thus, the feeding and discharging of the feed liquid are facilitated, and the dripping efficiency and the dripping effect can be improved.

Adopt the dropwise add pipe body of above-mentioned structure, can be better cooperate with the baffle, effectively avoid dropwise add feed liquid to sputter on the glass reation kettle inner wall.

In a second aspect, in at least one embodiment, an adhesive preparation apparatus is provided, which includes a reaction kettle, and the dropping pipe;

the baffle set up in the reation kettle, the feed inlet of dropwise add pipe stretches out reation kettle.

It can be understood that the adhesive preparation device and the dropping pipe are based on the same inventive concept, and therefore have at least the same advantages as the dropping pipe, and are not described in detail herein.

In the adhesive preparation device, the upper end of the reaction kettle can be provided with a plurality of feed inlets, and the dropping pipe can be arranged at least one feed inlet; further, the dropping pipe is detachably arranged in the reaction kettle. The feeding section of the dropwise adding pipe body can be arranged outside the reaction kettle, the middle section of the dropwise adding pipe body can be arranged at the feeding port of the reaction kettle, and the discharging section and the baffle of the dropwise adding pipe body can be arranged inside the reaction kettle.

In a third aspect, in at least one embodiment, there is provided a use of the dropping tube or the adhesive preparation apparatus as described above in the preparation of an adhesive.

Above-mentioned dropwise add pipe or gluing agent preparation facilities, simple structure, easy manufacturing, convenient operation and maintenance, it is with low costs, can effectively avoid the remaining dead glue of reation kettle inner wall, wash easily, the raw materials cost has been saved to environment friendly, has improved production efficiency, has guaranteed the product quality who makes, but the wide application is in the preparation field of gluing agent.

The present invention will be further described with reference to the following specific examples, comparative examples and the accompanying drawings.

Example 1

As shown in fig. 1 and 2, the present embodiment provides a dropping pipe including a dropping pipe body 1 and a baffle 2 provided on the dropping pipe body 1;

the dropping pipe body 1 comprises a feeding section 101, a middle section 102 and a discharging section 103 which are sequentially communicated, the feeding section 101 is provided with a material liquid inlet 11, the discharging section 103 is provided with a discharging hole 12, and the baffle 2 is arranged on the discharging section 103 of the dropping pipe body 1; the feeding section 101 is detachably connected with the middle section 102, and the outer diameter of the lower end of the feeding section 101 is matched with the inner diameter of the upper end of the middle section 102; furthermore, the lower end of the feeding section 101 and the upper end of the middle section 102 can be ground glass, and a ground glass interface at the lower end of the feeding section 101 extends into the ground glass at the upper end of the middle section 102; the middle section 102 and the discharge section 103 are detachably connected or the middle section 102 and the discharge section 103 are integrally formed; the length of the discharge section 103 is greater than the total length of the feed section 101 and the intermediate section 102, and the diameter of the discharge section 103 is less than the diameter of the feed section 101 and the intermediate section 102.

The baffle 2 comprises a first baffle group 201 and a second baffle group 202, one end of the first baffle group 201 is connected with the side wall of the dropping pipe body 1 and forms an acute angle alpha, further, the upper end of the first baffle group 201 is connected with the side wall of the discharging section 103 of the dropping pipe body 1 and forms an acute angle alpha, and the angle of the acute angle alpha is less than or equal to 85 degrees and preferably 30 degrees. The first baffle group 201 comprises one or more first baffles which are arranged around the side wall of the dropping pipe body 1 at intervals; one end of the first baffle group 201 is welded with the side wall of the dropping pipe body 1; the other end of the first baffle group 201 is connected with the second baffle; alternatively, the other end of the first baffle group 201 is a free end.

The second baffle group 202 comprises a plurality of second baffles which are arranged in a spaced and parallel manner, and are located below the discharge hole 12 of the dropping pipe body 1, at least one part of the second baffles is connected with the inner end face of the first baffle group 201 to form an obtuse included angle beta, and the angle of the obtuse included angle beta is 95-160 degrees, preferably 120 degrees. The second baffles are sequentially arranged from top to bottom, and the diameters or the lengths of the second baffles are sequentially increased from top to bottom. The second baffle is flat or annular.

Comparative example 1

As shown in fig. 3, this comparative example provides a dropping pipe of the prior art, which includes a feeding section 101 and an intermediate section 102.

Comparative example 2

As shown in fig. 4, this comparative example provides a dropping pipe of the prior art, which includes a feed section 101, an intermediate section 102, and a discharge section 103.

Through above-mentioned comparative example 1, comparative example 2 and the utility model discloses a contrast of embodiment can be seen out, the utility model discloses a cooperation setting of first baffle group and second baffle group and dropwise add pipe body can avoid the monomer to have partial monomer to form because of sputtering the polymerization of reation kettle inner wall and remain the phenomenon emergence of dying glue at dropwise in-process, through the setting of baffle promptly, makes the feed liquid that the dropwise add got off flow down along the baffle to avoid the monomer to splash the cauldron wall and form and die to glue and remain.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (10)

1. A dropping pipe is characterized by comprising a dropping pipe body and a baffle arranged on the dropping pipe body;

the baffle comprises a first baffle group and a second baffle group, and one end of the first baffle group is connected with the side wall of the dropping pipe body to form an acute included angle;

the second baffle group comprises a plurality of second baffles which are arranged at intervals, and at least one part of each second baffle is connected with the inner end face of the corresponding first baffle group to form an obtuse included angle.

2. The addition drop tube of claim 1, wherein the acute included angle is less than or equal to 85 °.

3. The dropping pipe according to claim 1, wherein the obtuse included angle is 95-160 °.

4. The addition tube as claimed in claim 1, wherein the first baffle group includes one first baffle; or,

first baffle group includes that a plurality of intervals encircle the setting and are in drip pipe body lateral wall first baffle all around.

5. The dropping pipe according to claim 1, wherein a plurality of the second baffles are arranged in parallel at intervals below the discharge port of the dropping pipe body;

and/or the diameters or the lengths of the plurality of second baffles are sequentially increased from top to bottom.

6. The dropping pipe according to any one of claims 1 to 5, wherein the second baffle is flat or annular.

7. The dropping pipe according to any one of claims 1 to 5, wherein the dropping pipe body and the baffle are made of the same material.

8. The dropping pipe according to any one of claims 1 to 5, wherein the dropping pipe body comprises a feeding section, an intermediate section and a discharging section which are communicated in sequence, and the baffle is arranged on the discharging section of the dropping pipe body.

9. The dropping pipe according to claim 8, wherein the feeding section is detachably connected with the middle section, and the outer diameter of the lower end of the feeding section is matched with the inner diameter of the upper end of the middle section;

and/or the middle section is detachably connected with the discharging section; or the middle section and the discharging section are integrally formed.

10. An adhesive preparation device, which is characterized by comprising a reaction kettle and the dropping pipe of any one of claims 1 to 9;

the baffle set up in the reation kettle, the feed inlet of dropwise add pipe stretches out reation kettle.