Prepolymer synthesis device for preparing polyurethane adhesive

Abstract

The invention belongs to the technical field of polyurethane adhesive preparation, and discloses a prepolymer synthesis device for polyurethane adhesive preparation, the prepolymer synthesis device comprises a synthesis tank and a power mechanism, the synthesis tank is internally provided with an assembly frame, the top of the assembly frame is fixedly provided with a rotary adjusting assembly, and the top of the synthesis tank is provided with an air exhaust assembly. Through a rotary adjusting assembly, a composite stirring assembly, a compression spraying part and a composite conveying part, while the composite stirring assembly is rotationally driven to realize stirring treatment of reaction materials in a synthesis tank, the lifting motion of the rotary adjusting assembly is intermittently controlled in cooperation with starting and stopping of an air exhaust assembly in a rotating state; and the movement of the composite conveying part is realized, the mixed reaction material is contained and conveyed into the compression spraying part and is directionally compressed and atomized and sprayed out, and the dispersion effect is improved by utilizing the atomized mixed liquid sprayed out oppositely from the two sides, so that the contact effect after the mixed liquid is dispersed is improved, the reaction uniformity is improved, and the reaction synthesis rate is further improved.

Description

Technical Field

[0001] The present invention belongs to the technical field of polyurethane adhesive preparation, and specifically relates to a prepolymer synthesis device for polyurethane adhesive preparation. Background Art

[0002] Polyurethane adhesives are functional bonding materials mainly composed of polyurethane prepolymers. A prepolymer synthesis device is used to synthesize polyurethane prepolymers, and by realizing the efficient polymerization of polyisocyanates and polyols, prepolymers with terminal isocyanate (-NCO) or hydroxyl (-OH) groups are formed.

[0003] In the prepolymer synthesis device for polyurethane adhesive preparation in the prior art, during use, reactants are usually put into a synthesis tank, and with heating and stirring treatment, the reaction synthesis is carried out. However, in the actual reaction process, the reaction materials are in a liquid state and accumulate in the synthesis tank. Relying only on the stirring action of unidirectional shearing still cannot achieve the full and uniform treatment of the two reaction materials. The uniform reaction effect during actual stirring and reaction is limited. The accumulated liquid state itself limits the reaction rate. In actual synthesis, there are problems of insufficient uniformity and low reaction rate, and the use effect is not good. Summary of the Invention

[0004] The purpose of the present invention is to provide a prepolymer synthesis device for polyurethane adhesive preparation to solve the problems raised in the above background art.

[0005] To achieve the above purpose, the present invention provides the following technical solution: A prepolymer synthesis device for polyurethane adhesive preparation, including a synthesis tank and a power mechanism. An assembly frame is arranged inside the synthesis tank. A rotary adjustment component is fixedly installed at the top of the assembly frame. An air extraction component is arranged at the top of the synthesis tank, and the air extraction component is communicated with the rotary adjustment component. An intermediate plate is fixedly connected inside the assembly frame. A compression ejection part is fixedly connected to the side of the intermediate plate. A composite transportation part is movably sleeved inside the compression ejection part. The top of the composite transportation part movably passes through the compression ejection part and is fixedly connected to the rotary adjustment component. A composite stirring component is fixedly connected to the outer side of the assembly frame.

[0006] The compression ejection part includes a sleeve frame, a first slit, an extrusion block, and a magnet. The first slit is opened on the side of the sleeve frame. The sleeve frame is fixed to the intermediate plate through a connecting column. The extrusion block is fixedly connected in the sleeve frame. The magnet is nested on the inner wall of the sleeve frame.

[0007] Preferably, the composite conveying part includes a conveying frame, a connecting rod, a second seam, a movable plate, a third seam, a second spring, a magnetic attraction block and an assembly cavity. One end of the connecting rod movably passes through the sleeve frame and is fixedly connected to the conveying frame. The second seam is opened on the side surface of the conveying frame. The movable plate is movably sleeved in the assembly cavity. The magnetic attraction block and the second spring are fixedly connected to both ends of the movable plate. The other end of the second spring is fixedly connected to the assembly cavity. The third seam is opened on the front surface of the movable plate. The assembly cavity is opened inside the conveying frame. An elastic layer is fixedly arranged at the bottom of the conveying frame.

[0008] Preferably, the rotary adjustment assembly includes a fixed pipe, a sleeve rod, a limiting ring, a first spring, a side opening and an impact ball. One end of the fixed pipe is fixedly sleeved on the top of the assembly frame. The upper end of the fixed pipe is rotatably installed on the top of the synthesis tank through a bearing. One end of the sleeve rod is movably sleeved in the fixed pipe, and the other end is fixedly connected to the impact ball. The limiting ring is fixedly sleeved on the outer surface of the sleeve rod. One end of the first spring is fixedly connected to the limiting ring, and the other end is fixedly connected to the bottom of the fixed pipe. The side opening is opened at the top of the outer side surface of the fixed pipe. The side surface of the sleeve rod is fixedly connected to the connecting rod. The power mechanism is installed on the top of the synthesis tank, and the output shaft is fixedly connected to the top of the fixed pipe.

[0009] Preferably, the air extraction assembly includes a negative pressure pump and a communication cover. The communication cover is fixed on the top of the synthesis tank and sleeved outside the fixed pipe. The side opening is communicated with the communication cover. The negative pressure pump is fixed on the top of the synthesis tank, and the air outlet end is communicated with the communication cover.

[0010] Preferably, the composite stirring assembly includes an arc rod and a stirring plate. The arc rod fits the inner wall of the synthesis tank. The stirring plate is fixedly connected to the inner side surface of the arc rod. The arc rod is fixedly connected to the assembly frame through the stirring plate.

[0011] Preferably, a heating cavity is opened in the inner wall of the synthesis tank, and a heating pipe is fixedly arranged inside the heating cavity.

[0012] Preferably, a replenishing component is arranged inside the synthesis tank. A side hole is opened on the outer side surface of the synthesis tank. A replenishing curved pipe is fixedly connected to the outer side surface of the synthesis tank. One end of the replenishing curved pipe is communicated with the side hole, and the other end is provided with a sealing plug. The inner end of the side hole is communicated with the replenishing component. Push rods are fixedly arranged on both sides of the rotary adjustment assembly and control the opening and closing of the replenishing component.

[0013] Preferably, the replenishing component includes a distribution ring, a conduit, a sealing block, a movable rod, a spring three, and a rotating ring. The distribution ring is fixedly connected to the inner wall of the synthesis tank and communicates with the side holes. The rotating ring is rotatably sleeved on the bottom of the distribution ring. One end of the conduit is fixedly connected to the bottom of the rotating ring and communicates with the distribution ring. The other end of the conduit is fixedly connected to the assembly frame. The movable rod is movably sleeved on the top of the assembly frame, and the lower end is fixedly connected to the sealing block. One end of the spring three is fixedly connected to the top of the sealing block, and the upper end is fixedly connected to the assembly frame. A conduction chamber is provided inside the assembly frame. The outlet end of the conduit communicates with the inlet of the conduction chamber. The sealing block movably seals the outlet of the conduction chamber.

[0014] Preferably, the conduction chamber includes a sliding chamber, a middle hole, and a storage chamber. The storage chamber is opened inside the assembly frame. The sliding chamber and the middle hole are both opened on the assembly frame and are distributed on both sides of the storage chamber. The sliding chamber and the middle hole both communicate with the storage chamber. The middle hole serves as the inlet of the conduction chamber and communicates with the conduit. The sealing block is slidably sleeved in the sliding chamber. The outlet end of the storage chamber is located on the moving path of the sealing block.

[0015] Preferably, the push rod is fixedly connected to the outer side of the limiting ring and is located directly below the sealing block.

[0016] The beneficial effects of the present invention are as follows:

[0017] (1) By using the rotary adjustment component, the composite agitation component, the compression ejection part, and the composite transportation part, while the rotation drives the composite agitation component to agitate the reaction materials in the synthesis tank, during the rotation state, in cooperation with the start and stop of the air extraction component, the lifting movement of the rotary adjustment component is intermittently controlled, and the movement of the composite transportation part is realized. The mixed reaction materials are filled and transported to the compression ejection part and are directionally compressed and atomized and ejected. By using the atomized mixed liquid ejected from both sides in opposite directions, the dispersion effect is improved, thereby improving the contact effect after the dispersion of the mixed liquid, improving the reaction uniformity, and further improving the reaction synthesis rate.

[0018] (2) By utilizing the combined action of the rotary adjustment component and the composite agitation component, the present invention realizes the agitation of the mixed liquid on the one hand during the rotation process, and on the other hand realizes the friction cleaning of the inner wall of the synthesis tank. At the same time, it is also coordinated with the composite transportation part that moves up and down. During the actual agitation process, in addition to using the shear mixing of circular rotation, the composite transportation part is also used. While transporting the mixed liquid for atomizing and spraying out the reaction, the reaction materials are impacted and mixed in a lifting manner, and the disturbance of the reaction material liquid is strengthened by the impact action. The mixing effect is provided by multi-directional disturbances, the reaction rate is increased, and when the composite transportation part elastically moves downward and resets, the self-vibration of the composite agitation component is realized in coordination with the rotary adjustment component, and the vibration energy is transmitted to the mixed liquid during the stirring process, further realizing vibration mixing, greatly improving the comprehensive mixing effect, and significantly increasing the reaction synthesis speed.

[0019] (3) By utilizing the rotary adjustment component again and coordinating with the setting of the replenishing component, the present invention conveniently adds the additives to be replenished into the intermediate chamber (conducting chamber) under the sealed state inside the synthesis tank, and when the rotary adjustment component moves upward and performs atomizing compression and spraying, the conducting chamber is synchronously opened to release the previously stored additives. After realizing the closed addition, the additives can be automatically replenished in a timely manner during the synthesis reaction without stopping the machine or damaging the internal seal of the synthesis tank. While realizing automatic addition, the influence on the reaction process is reduced, and the comprehensive use effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a schematic structural diagram of the present invention;

[0021] Figure 2 is a schematic cross-sectional view of the present invention;

[0022] Figure 3 is an assembly schematic diagram of the rotary adjustment component and the assembly frame of the present invention;

[0023] Figure 4 is a connection schematic diagram of the assembly frame and the composite agitation component of the present invention;

[0024] Figure 5 is an installation schematic diagram of the compression spraying part, the composite transportation part and the rotary adjustment component of the present invention;

[0025] Figure 6 is a schematic cross-sectional view of the compression spraying part and the composite transportation part of the present invention;

[0026] Figure 7 is an exploded schematic diagram of the compression spraying part of the present invention;

[0027] Figure 8 is an exploded schematic diagram of the composite transportation part of the present invention;

[0028] Figure 9Schematic cross-sectional view of the transport frame of the present invention;

[0029] Figure 10 Schematic cross-sectional view of the replenishing component and the mounting rack of the present invention;

[0030] Figure 11 Schematic view of the air extraction component of the present invention.

[0031] In the figure: 1, synthesis tank; 2, power mechanism; 3, mounting rack; 4, rotary adjustment component; 41, fixed pipe; 42, sleeve rod; 43, limiting ring; 44, first spring; 45, side port; 46, impact ball; 5, air extraction component; 51, negative pressure pump; 52, connecting cover; 6, intermediate plate; 7, composite stirring component; 71, arc rod; 72, stirring plate; 8, heating cavity; 9, heating pipe; 10, compression ejection part; 101, sleeve frame; 102, first seam; 103, extrusion block; 104, magnet; 11, composite transport part; 111, transport frame; 112, connecting rod; 113, second seam; 114, movable plate; 115, third seam; 116, second spring; 117, magnetic attraction block; 118, mounting cavity; 12, replenishing component; 121, distribution ring; 122, conduit; 123, sealing block; 124, movable rod; 125, third spring; 126, rotating ring; 13, side hole; 14, replenishing curved pipe; 15, sliding cavity; 16, intermediate hole; 17, storage cavity; 18, push rod; 19, elastic layer. Detailed implementation manners

[0032] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0033] As Figures 1 to 11As shown in the figure, an apparatus for synthesizing a prepolymer for preparing a polyurethane adhesive according to an embodiment of the present invention includes a synthesis tank 1 and a power mechanism 2. An assembly rack 3 is provided inside the synthesis tank 1. A rotary adjustment assembly 4 is fixedly installed on the top of the assembly rack 3. An air extraction assembly 5 is provided on the top of the synthesis tank 1. The air extraction assembly 5 is communicated with the rotary adjustment assembly 4. An intermediate plate 6 is fixedly connected inside the assembly rack 3. A compression ejection part 10 is fixedly connected to the side of the intermediate plate 6. A composite conveying part 11 is movably sleeved inside the compression ejection part 10. The top of the composite conveying part 11 movably passes through the compression ejection part 10 and is fixedly connected to the rotary adjustment assembly 4. A composite stirring assembly 7 is fixedly connected to the outer side of the assembly rack 3. The compression ejection part 10 includes a sleeve frame 101, a first slit 102, an extrusion block 103, and a magnet 104. The first slit 102 is opened on the side of the sleeve frame 101. The sleeve frame 101 is fixed to the intermediate plate 6 through a connecting column. The extrusion block 103 is fixedly connected in the sleeve frame 101. The magnet 104 is nested on the inner wall of the sleeve frame 101.

[0034] Example 1: During use, open the feed inlet at the top of the synthesis tank 1, and put the reaction materials into the tank body. Seal the feed inlet, open the gas outlet valve at the top of the synthesis tank 1, and connect it to the external vacuum pumping mechanism to complete the vacuum pumping inside the tank body. After the preparation work is completed, start the heating tube 9 in the heating chamber 8. As the temperature rises, the materials inside the synthesis tank 1 start to react, generating steam and extracting it, while producing reaction products. As the reaction proceeds, start the power mechanism 2 and drive the rotary adjustment assembly 4 to rotate, synchronously driving the connected composite stirring assembly 7 to rotate. The arc-shaped rod 71 slides along the inner wall of the synthesis tank 1, synchronously removing the attached materials, and the stirring plate 72 rotates to stir the mixed material liquid. At the same time, intermittently start the air extraction assembly 5. When the negative pressure pump 51 starts and sucks the gas in the fixed tube 41 along the connecting cover 52, the air pressure inside the fixed tube 41 decreases, causing the sleeve rod 42 to move upward along the inside of the fixed tube 41 under the action of the pressure difference between the upper and lower ends, stretching the first spring 44, and at the same time driving the composite conveying part 11 immersed in the material liquid to move upward through the connecting rod 112. The conveying frame 111 holds the liquid from the material liquid and moves out of the liquid surface, and moves upward into the sleeve frame 101 of the compression spraying part 10. As the conveying frame 111 is gradually inserted, at the same time, the extrusion block 103 is pressed into the conveying frame 111 to extrude the mixed liquid contained inside. During the extrusion process, the liquid is further pressed into and expands inside the elastic layer 19 connected to the bottom of the conveying frame 111. And when the conveying frame 111 is inserted and the first slot 102 and the second slot 113 are gradually aligned, at this time, the magnetic attraction block 117 in the assembly cavity 118 is magnetically attracted by the magnet 104 and moves in the assembly cavity 118, stretching the second spring 116, and causing the third slot 115 on the movable plate 114 to communicate with the first slot 102 and the second slot 113 at the same time. The elastic layer 19 elastically restores and further squeezes out the stored mixed liquid through the second slot 113, the third slot 115 and the first slot 102, so that the compression spraying parts 10 symmetrically on both sides spray out the mixed liquid at the same time, making the dispersed sprayed mixed liquids blend with each other to complete the rapid reaction after dispersed contact; when the negative pressure pump 51 stops pumping air, the first spring 44 elastically restores, the composite conveying part 11 moves downward to reset and is immersed in the mixed liquid again, and the mixed liquid automatically fills into the conveying frame 111 again. And as the sleeve rod 42 follows and elastically resets downward, it drives the impact ball 46 to hit the middle plate 6 downward, causing the assembly frame 3, the composite stirring assembly 7 and the compression spraying part 10 to vibrate, and the vibration energy radiates into the mixed liquid; and during the rotation and stirring process of the composite stirring assembly 7, the composite conveying part 11 reciprocally vertically presses into the mixed materials to complete the composite disturbance.

[0035] First, by utilizing the rotary adjustment assembly 4, the compound agitation assembly 7, the compression ejection part 10, and the compound transportation part 11, while the rotation drives the compound agitation assembly 7 to agitate the reaction materials in the synthesis tank 1, during the rotation state, in coordination with the start and stop of the air extraction assembly 5, the lifting movement of the rotary adjustment assembly 4 is intermittently controlled, and the movement of the compound transportation part 11 is realized. The mixed reaction materials are filled and transported to the compression ejection part 10, where they are directionally compressed and atomized and ejected. By using the atomized mixed liquid ejected from both sides in opposite directions, the dispersion effect is improved, thereby enhancing the contact effect after the dispersion of the mixed liquid, improving the reaction uniformity, and further increasing the reaction synthesis rate.

[0036] In addition, through the combined action of the rotary adjustment assembly 4 and the compound agitation assembly 7, during the rotation, on the one hand, the agitation of the mixed liquid is realized, and on the other hand, the inner wall of the synthesis tank 1 is frictionally cleaned. At the same time, in cooperation with the compound transportation part 11 that moves up and down, during the actual agitation process, in addition to using the shear mixing of circular rotation, the compound transportation part 11 is also utilized. While transporting the mixed liquid for atomized ejection reaction, the reaction materials are impacted and mixed in a lifting manner. The impact effect is used to strengthen the perturbation of the reaction material liquid, and multi-directional perturbation is adopted to provide a mixing effect, improving the reaction rate. Moreover, when the compound transportation part 11 elastically moves downward and resets, in cooperation with the rotary adjustment assembly 4, the self-vibration of the compound agitation assembly 7 is realized, and the vibration energy is transmitted to the mixed liquid during the stirring process, further realizing vibration mixing. The comprehensive mixing effect is greatly improved, and the reaction synthesis speed is significantly increased.

[0037] Example 2: When additives need to be replenished after the reaction has proceeded for a period of time, first stop the movement of the compound transportation part 11, open the sealing plug at the top of the replenishment bent pipe 14, put the additives into the replenishment bent pipe 14, and seal the replenishment bent pipe 14. The added additives enter the storage cavity 17 along the side holes 13, the distribution ring 121, the conduit 122, and the middle hole 16. After the input is completed, start the air extraction assembly 5, so that the rotary adjustment assembly 4 moves upward, drives the push rod 18 to move upward, and the push rod 18 pushes the sealing block 123 to move upward, and opens the storage cavity 17, realizing the automatic replenishment of the stored additives into the synthesis tank 1, completing the automatic addition under sealing.

[0038] First, by utilizing the rotary adjustment assembly 4 again, in cooperation with the setting of the replenishment assembly 12, the additives to be replenished are conveniently added to the intermediate chamber (conducting chamber) under the sealed state inside the synthesis tank 1, and when the rotary adjustment assembly 4 moves upward and performs atomized compression and ejection, the conducting chamber is synchronously opened to release the previously stored additives. After realizing the closed addition, the additives can be automatically replenished in a timely manner during the synthesis reaction without stopping the machine or destroying the internal seal of the synthesis tank 1. While realizing the automatic addition, the influence on the reaction process is reduced, and the comprehensive use effect is good.

[0039] Among them, the composite transportation part 11 includes a transportation frame 111, a connecting rod 112, a second slit 113, a movable plate 114, a third slit 115, a second spring 116, a magnetic attraction block 117 and an assembly cavity 118. One end of the connecting rod 112 movably passes through the sleeve frame 101 and is fixedly connected to the transportation frame 111. The second slit 113 is opened on the side surface of the transportation frame 111. The movable plate 114 is movably sleeved in the assembly cavity 118. The magnetic attraction block 117 and the second spring 116 are fixedly connected to both ends of the movable plate 114. The other end of the second spring 116 is fixedly connected to the assembly cavity 118. The third slit 115 is opened on the front surface of the movable plate 114. The assembly cavity 118 is opened inside the transportation frame 111. An elastic layer 19 is fixedly provided at the bottom of the transportation frame 111.

[0040] By utilizing the up and down movement of the composite transportation part 11 and cooperating with the compression spraying part 10, atomized spraying of the mixed liquid is realized, the reaction contact area is provided, the reaction speed is enhanced, the liquid is contained when moving downward, and it is extruded and sprayed when moving upward into the compression spraying part 10. The elastic layer 19 buffers the solution compressed in the previous stage, and releases and elastically restores when conducting. The magnetic attraction block 117 cooperates with the magnet 104 to realize the opening and closing control of the second slit 113, ensure sealing during containment, and open and complete spraying when moving in place.

[0041] The elastic layer 19 realizes compression buffering, ensures that when the transportation frame 111 moves upward and is sleeved and compressed without conduction and release, the buffering of storing the mixed liquid is completed. The elastic layer 19 deforms and expands under pressure to store the mixed liquid under further compression, and elastically restores when the bypass is opened. At the same time, it assists in discharging the mixed liquid, completes effective spraying treatment, cooperates with the slit effect, realizes spraying atomization, improves the dispersion effect, improves the mixing uniformity, and further improves the reaction preparation rate.

[0042] Among them, the rotary adjustment assembly 4 includes a fixed tube 41, a sleeve rod 42, a limiting ring 43, a first spring 44, a side opening 45 and an impact ball 46. One end of the fixed tube 41 is fixedly sleeved on the top of the assembly frame 3. The upper end of the fixed tube 41 is rotatably installed on the top of the synthesis tank 1 through a bearing. One end of the sleeve rod 42 is movably sleeved in the fixed tube 41, and the other end is fixedly connected to the impact ball 46. The limiting ring 43 is fixedly sleeved on the outer surface of the sleeve rod 42. One end of the first spring 44 is fixedly connected to the limiting ring 43, and the other end is fixedly connected to the bottom of the fixed tube 41. The side opening 45 is opened at the top of the outer side surface of the fixed tube 41. The side surface of the sleeve rod 42 is fixedly connected to the connecting rod 112. The power mechanism 2 is installed on the top of the synthesis tank 1, and the output shaft is fixedly connected to the top of the fixed tube 41.

[0043] The rotary adjustment component 4 drives the assembly frame 3 to rotate, drives the composite stirring component 7 to rotate, and completes stirring. At the same time, it can lift and drive the movement of the composite conveying part 11, and can also push and open the replenishing component 12 when moving upward to achieve automatic replenishment of additives. The first spring 44 is used for elastic reset, and impacts the assembly frame 3 during elastic reset to vibrate the composite stirring component 7 and perform vibration treatment on the mixed liquid.

[0044] Among them, the air extraction component 5 includes a negative pressure pump 51 and a connecting cover 52. The connecting cover 52 is fixed on the top of the synthesis tank 1 and sleeved outside the fixed pipe 41. The side port 45 is communicated with the connecting cover 52. The negative pressure pump 51 is fixed on the top of the synthesis tank 1, and the air outlet end is communicated with the connecting cover 52.

[0045] The air extraction component 5 sucks the air inside the rotary adjustment component 4, and cooperates with the negative pressure to realize the upward movement of the lower end of the rotary adjustment component 4, control the upward movement of the composite conveying part 11, and reset after stopping suction to realize the downward reset of the composite conveying part 11.

[0046] Among them, the composite stirring component 7 includes an arc rod 71 and a stirring plate 72. The arc rod 71 conforms to the inner wall of the synthesis tank 1, and the stirring plate 72 is fixedly connected to the inner side surface of the arc rod 71. The arc rod 71 is fixedly connected to the assembly frame 3 through the stirring plate 72.

[0047] The composite stirring component 7 realizes stirring and inner wall cleaning.

[0048] Among them, a heating cavity 8 is opened in the inner wall of the synthesis tank 1, and a heating pipe 9 is fixedly arranged inside the heating cavity 8.

[0049] The heating cavity 8 cooperates with the heating pipe 9 to provide heat and realize the heating reaction.

[0050] Among them, a replenishing component 12 is provided inside the synthesis tank 1. A side hole 13 is formed on the outer side surface of the synthesis tank 1. A replenishing curved pipe 14 is fixedly connected to the outer side surface of the synthesis tank 1. One end of the replenishing curved pipe 14 communicates with the side hole 13, and a sealing plug is provided at the other end. The inner end of the side hole 13 communicates with the replenishing component 12. Push rods 18 are fixedly provided on both sides of the rotary adjustment component 4 to control the opening and closing of the replenishing component 12. The replenishing component 12 includes a distribution ring 121, a conduit 122, a sealing block 123, a movable rod 124, a spring three 125 and a rotating ring 126. The distribution ring 121 is fixedly connected to the inner wall of the synthesis tank 1 and communicates with the side hole 13. The rotating ring 126 is rotatably sleeved at the bottom of the distribution ring 121. One end of the conduit 122 is fixedly connected to the bottom of the rotating ring 126 and communicates with the distribution ring 121. The other end of the conduit 122 is fixedly connected to the assembly frame 3. The movable rod 124 is movably sleeved at the top of the assembly frame 3, and the lower end is fixedly connected to the sealing block 123. One end of the spring three 125 is fixedly connected to the top of the sealing block 123, and the upper end is fixedly connected to the assembly frame 3. A conduction chamber is provided inside the assembly frame 3. The outlet end of the conduit 122 communicates with the inlet of the conduction chamber. The sealing block 123 movably seals the outlet of the conduction chamber. The conduction chamber includes a sliding cavity 15, an intermediate hole 16 and a storage cavity 17. The storage cavity 17 is formed inside the assembly frame 3. The sliding cavity 15 and the intermediate hole 16 are both formed on the assembly frame 3 and are distributed on both sides of the storage cavity 17. The sliding cavity 15 and the intermediate hole 16 both communicate with the storage cavity 17. The intermediate hole 16 serves as the inlet of the conduction chamber and communicates with the conduit 122. The sealing block 123 is slidably sleeved in the sliding cavity 15. The outlet end of the storage cavity 17 is located on the moving path of the sealing block 123. The push rod 18 is fixedly connected to the outer side surface of the limiting ring 43 and is located directly below the sealing block 123.

[0051] By utilizing the cooperation of the replenishing curved pipe 14 and the replenishing component 12, the required additives can be pre-filled before synthesis and stored inside the replenishing component 12. With the rotary adjustment component 4 driving the upward movement of the push rod 18, the additives stored in the replenishing component 12 can be automatically released into the reaction system, realizing the optimization and adjustment of the reaction process. The push rod 18 drives the sealing block 123 to move upward to complete the opening and release. The rotating ring 126 performs dynamic sealing rotation in the distribution ring 121. Specifically, elastic sealing rings (not shown in the figure) are provided on both sides of the distribution ring 121 to ensure that it can also be realized during the rotation process, improving the synchronous processing efficiency.

[0052] Working principle and usage process of the present invention: During use, open the feed inlet at the top of the synthesis tank 1, and put the reaction materials into the tank body. Seal the feed inlet, open the gas outlet valve at the top of the synthesis tank 1, and connect it to the external vacuum pumping mechanism to complete the evacuation of the inside of the tank body. After the preparation work is completed, start the heating tube 9 in the heating chamber 8. As the temperature rises, the materials inside the synthesis tank 1 start to react, generating steam and extracting it, while producing reaction products. As the reaction progresses, start the power mechanism 2 and drive the rotary adjustment assembly 4 to rotate, synchronously driving the connected composite stirring assembly 7 to rotate. The arc-shaped rod 71 slides along the inner wall of the synthesis tank 1 to synchronously remove the attached materials, and the stirring plate 72 rotates to stir the mixed material liquid. At the same time, intermittently start the air extraction assembly 5. When the negative pressure pump 51 starts to suck the gas in the fixed tube 41 along the connecting cover 52, the air pressure inside the fixed tube 41 decreases, causing the sleeve rod 42 to move upward along the inside of the fixed tube 41 under the action of the pressure difference between the upper and lower ends, stretching the first spring 44, and at the same time driving the composite conveying part 11 immersed in the material liquid to move upward through the connecting rod 112. The conveying frame 111 receives and removes the liquid from the material liquid and moves out of the liquid surface, and moves upward into the sleeve frame 101 of the compression spraying part 10. As the conveying frame 111 is gradually inserted, at the same time, the extrusion block 103 is pressed into the conveying frame 111 to extrude the mixed liquid contained inside. During the extrusion process, the liquid is further pressed into and expands inside the elastic layer 19 connected to the bottom of the conveying frame 111. And when the conveying frame 111 is inserted and the first slit 102 and the second slit 113 are gradually aligned, at this time, the magnetic attraction block 117 in the assembly cavity 118 is magnetically attracted by the magnet 104 and moves in the assembly cavity 118, stretching the second spring 116, and causing the third slit 115 on the movable plate 114 to communicate with the first slit 102 and the second slit 113 at the same time. The elastic layer 19 elastically recovers and further extrudes the stored mixed liquid through the second slit 113, the third slit 115, and the first slit 102, so that the compression spraying parts 10 on both sides symmetrically spray out the mixed liquid at the same time, making the dispersed sprayed mixed liquid blend with each other to complete the rapid reaction after dispersed contact; When the negative pressure pump 51 stops pumping air, the first spring 44 elastically recovers, the composite conveying part 11 moves downward to reset and is immersed in the mixed liquid again, and the mixed liquid automatically fills into the conveying frame 111 again. And as the sleeve rod 42 follows and elastically resets downward, it drives the impact ball 46 to hit the middle plate 6 downward, causing the assembly frame 3, the composite stirring assembly 7, and the compression spraying part 10 to vibrate, and the vibration energy radiates into the mixed liquid; And as the composite stirring assembly 7 rotates and stirs, the composite conveying part 11 reciprocally vertically presses into the mixed materials to complete the composite disturbance;When it is necessary to supplement the additive after the reaction has proceeded for a period of time, first stop the movement of the composite conveying part 11, open the sealing plug at the top of the filling curved tube 14, put the additive into the filling curved tube 14, and seal the filling curved tube 14. The added additive enters the storage cavity 17 along the side holes 13, the distribution ring 121, the conduit 122 and the middle hole 16. After the input is completed, start the air extraction assembly 5, so that the rotary adjustment assembly 4 moves upward, drives the push rod 18 to move upward, and the push rod 18 pushes the sealing block 123 to move upward, and opens the storage cavity 17, realizing the automatic replenishment of the stored additive into the synthesis tank 1 to complete the automatic addition under sealing.

[0053] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A prepolymer synthesis device for preparing a polyurethane adhesive, comprising a synthesis tank (1) and a power mechanism (2), characterized in that: An assembly frame (3) is provided inside the synthesis tank (1), a rotary adjustment component (4) is fixedly installed on the top of the assembly frame (3), an air extraction component (5) is provided on the top of the synthesis tank (1), the air extraction component (5) is communicated with the rotary adjustment component (4), an intermediate plate (6) is fixedly connected inside the assembly frame (3), a compression ejection part (10) is fixedly connected to the side of the intermediate plate (6), a composite transport part (11) is movably sleeved inside the compression ejection part (10), the top of the composite transport part (11) movably passes through the compression ejection part (10) and is fixedly connected to the rotary adjustment component (4), and a composite stirring component (7) is fixedly connected to the outer side of the assembly frame (3), The compression ejection part (10) comprises a sleeve frame (101), a No. 1 slit (102), an extrusion block (103) and a magnet (104); the No. 1 slit (102) is opened on the side of the sleeve frame (101); the sleeve frame (101) is fixed on the middle plate (6) through a connecting column; the extrusion block (103) is fixedly connected to the sleeve frame (101); and the magnet (104) is nested on the inner wall of the sleeve frame (101).

2. A prepolymer synthesis device for preparing a polyurethane adhesive according to claim 1, characterized in that: The composite transport portion (11) comprises a transport frame (111), a connecting rod (112), a second seam (113), a movable plate (114), a third seam (115), a second spring (116), a magnetic block (117) and an assembly cavity (118); one end of the connecting rod (112) movably passes through the sleeve frame (101) and is fixedly connected to the transport frame (111); the second seam (113) is provided on a side of the transport frame (111); the movable plate (114) is provided on a side of the transport frame (111); 14) is movably sleeved in the assembly cavity (118), the magnetic block (117) and spring 2 (116) are fixedly connected to the two ends of the movable plate (114), the other end of spring 2 (116) is fixedly connected to the assembly cavity (118), the third seam (115) is opened on the front of the movable plate (114), the assembly cavity (118) is opened inside the transport frame (111), and an elastic layer (19) is fixedly provided at the bottom of the transport frame (111).

3. A prepolymer synthesis device for preparing a polyurethane adhesive according to claim 2, characterized in that: The rotary adjustment assembly (4) comprises a fixed tube (41), a sleeve rod (42), a stop ring (43), a spring (44), a side opening (45) and an impact ball (46); one end of the fixed tube (41) is fixedly sleeved on the top of the assembly frame (3); the upper end of the fixed tube (41) is rotatably mounted on the top of the synthesis tank (1) through a bearing; one end of the sleeve rod (42) is movably sleeved in the fixed tube (41), and the other end is fixedly connected to the impact ball (46); The limiting ring (43) is fixedly sleeved on the outer surface of the sleeve rod (42); one end of the spring (44) is fixedly connected to the limiting ring (43), and the other end is fixedly connected to the bottom of the fixed tube (41); the side opening (45) is opened at the top of the outer side of the fixed tube (41); the side of the sleeve rod (42) is fixedly connected to the connecting rod (112); the power mechanism (2) is installed on the top of the synthesis tank (1), and the output shaft is fixedly connected to the top of the fixed tube (41).

4. A prepolymer synthesis device for preparing a polyurethane adhesive according to claim 3, characterized in that: The air extraction assembly (5) comprises a negative pressure pump (51) and a connecting cover (52); the connecting cover (52) is fixed to the top of the synthesis tank (1) and sleeved on the outside of the fixed pipe (41); the side port (45) is connected to the connecting cover (52); the negative pressure pump (51) is fixed to the top of the synthesis tank (1), and the air outlet end is connected to the connecting cover (52).

5. The prepolymer synthesis device for preparing a polyurethane adhesive according to claim 1, characterized in that: The composite stirring assembly (7) comprises an arc-shaped rod (71) and a stirring plate (72), wherein the arc-shaped rod (71) is adapted to the inner wall of the synthesis tank (1), the stirring plate (72) is fixedly connected to the inner side surface of the arc-shaped rod (71), and the arc-shaped rod (71) is fixedly connected to the assembly frame (3) via the stirring plate (72).

6. The prepolymer synthesis device for preparing a polyurethane adhesive according to claim 1, characterized in that: A heating chamber (8) is provided in the inner wall of the synthesis tank (1), and a heating pipe (9) is fixedly provided inside the heating chamber (8).

7. The prepolymer synthesis device for preparing a polyurethane adhesive according to claim 3, characterized in that: A replenishing assembly (12) is provided inside the synthesis tank (1), a side hole (13) is provided on the outer side of the synthesis tank (1), a replenishing curved pipe (14) is fixedly connected to the outer side of the synthesis tank (1), one end of the replenishing curved pipe (14) is connected to the side hole (13), and a sealing plug is provided at the other end, the inner end of the side hole (13) is connected to the replenishing assembly (12), and push rods (18) are fixedly provided on both sides of the rotary adjustment assembly (4) to control the opening and closing of the replenishing assembly (12).

8. A prepolymer synthesis device for preparing a polyurethane adhesive according to claim 7, characterized in that: The replenishing assembly (12) comprises a distribution ring (121), a conduit (122), a sealing block (123), a movable rod (124), a spring three (125) and a rotating ring (126); the distribution ring (121) is fixedly connected to the inner wall of the synthesis tank (1) and communicated with the side hole (13); the rotating ring (126) is rotatably sleeved on the bottom of the distribution ring (121); one end of the conduit (122) is fixedly connected to the bottom of the rotating ring (126) and communicated with the distribution ring (121); The other end of the conduit (122) is fixedly connected to the assembly frame (3), the movable rod (124) is movably sleeved on the top of the assembly frame (3), and the lower end is fixedly connected to the sealing block (123), one end of the spring three (125) is fixedly connected to the top of the sealing block (123), and the upper end is fixedly connected to the assembly frame (3), a conduction chamber is provided inside the assembly frame (3), the outlet end of the conduit (122) is connected to the inlet of the conduction chamber, and the sealing block (123) movably seals the outlet of the conduction chamber.

9. A prepolymer synthesis device for preparing a polyurethane adhesive according to claim 8, characterized in that: The conduction chamber comprises a sliding chamber (15), a middle hole (16) and a storage chamber (17); the storage chamber (17) is provided inside the assembly frame (3); the sliding chamber (15) and the middle hole (16) are both provided on the assembly frame (3) and are distributed on both sides of the storage chamber (17); the sliding chamber (15) and the middle hole (16) are both communicated with the storage chamber (17); the middle hole (16) is communicated with the conduit (122) as an inlet of the conduction chamber; the sealing block (123) is slidably sleeved in the sliding chamber (15); and the outlet end of the storage chamber (17) is located on the moving path of the sealing block (123).

10. A prepolymer synthesis device for preparing a polyurethane adhesive according to claim 9, characterized in that: The push rod (18) is fixedly connected to the outer side surface of the limiting ring (43) and is located directly below the sealing block (123).

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