A glue mixing device

Abstract

This invention relates to the field of mixing technology, specifically to a glue mixing device, including a mixing tank, a mixing mechanism, and an aeration mechanism. The aeration mechanism is used to spray air into the liquid inside the mixing tank. The mixing mechanism includes a rotatably mounted mixing frame and rotatably mounted mixing blades on the mixing frame. The mixing frame is connected to a mixing drive mechanism. When the mixing drive mechanism drives the mixing frame to rotate, the mixing blades rotate around their own rotation axis and circumferentially around the rotation axis of the mixing frame. The aeration mechanism includes a conveying air passage disposed in the mixing frame and an exhaust channel disposed in the mixing blades. The exhaust channel is connected to the conveying air passage. One end of the mixing blade is provided with a jet nozzle, which is connected to the exhaust channel. The jet nozzle sprays air circumferentially towards the mixing blade as the mixing blade rotates. This invention solves the technical problem in the prior art where glue mixing devices easily cause uneven mixing, affecting the mixing effect.

Description

Technical Field

[0001] This invention relates to the field of mixing technology, and more specifically to an adhesive mixing device. Background Technology

[0002] Existing adhesives are typically composed of polyurethane adhesive (binder), curing agent, and ethyl acetate (solvent). The mixing process involves adding these three materials to the mixing tank of an adhesive mixing device, where they are then mixed using a stirring mechanism. Because the three materials have different consistencies—polyurethane adhesive has the highest consistency, followed by the curing agent, and ethyl acetate has the lowest—existing technologies typically use an aeration mechanism to spray air into the bottom of the mixing tank to increase the fluidity of the liquid. This allows the stirring mechanism to mix the three materials more thoroughly and evenly.

[0003] In existing glue mixing devices, the aeration mechanism cannot spray gas in a targeted manner, and the sprayed gas cannot reach the areas with higher viscosity. As a result, the gas sprayed by the aeration mechanism usually passes through the areas with lower concentration and has difficulty passing through the areas with higher concentration. This can easily lead to uneven mixing and affect the mixing effect. Summary of the Invention

[0004] To overcome the shortcomings of the prior art, the present invention proposes an adhesive mixing device to solve the technical problem that the adhesive mixing device in the prior art is prone to uneven mixing, which affects the mixing effect.

[0005] The adhesive mixing device of the present invention adopts the following technical solution:

[0006] A glue mixing device includes a mixing tank and a mixing mechanism located inside the mixing tank, and an aeration mechanism. The aeration mechanism is used to spray air into the liquid inside the mixing tank. The mixing mechanism is used to stir the liquid inside the mixing tank. The mixing mechanism includes a rotatably mounted mixing frame and a rotatably mounted mixing blade on the mixing frame. The mixing frame is connected to a mixing drive mechanism. When the mixing drive mechanism drives the mixing frame to rotate, the mixing blade rotates around its own rotation axis and circumferentially around the rotation axis of the mixing frame. The aeration mechanism includes a conveying air passage disposed in the mixing frame and an exhaust channel disposed in the mixing blade. The exhaust channel is connected to the conveying air passage. One end of the mixing blade is provided with a jet nozzle, which is connected to the exhaust channel. The jet nozzle sprays air circumferentially towards the mixing blade as the mixing blade rotates.

[0007] Furthermore, the rotation axis of the stirring frame extends in the vertical direction, and there are multiple stirring blades, each of which has a spiral structure. The multiple stirring blades are evenly spaced along the circumference of the stirring frame. The rotation axis of the stirring blades is perpendicular to the rotation axis of the stirring frame. The extension direction of the exhaust channel is perpendicular to the rotation axis of the stirring blades, and the jet nozzle is located at one end of the exhaust channel.

[0008] Furthermore, the exhaust channel extends through the opposite sides of the stirring blades, and each stirring blade is provided with two jet nozzles, which are located at both ends of the exhaust channel. Each jet nozzle is provided with a one-way valve for gas to be discharged from the exhaust channel.

[0009] Furthermore, the stirring blade is provided with a connecting air passage, which extends along the rotation axis of the stirring blade. One end of the connecting air passage is connected to the conveying air passage, and the other end is connected to the middle of the exhaust channel.

[0010] Furthermore, an impact ball is rolled inside the exhaust channel. The outer diameter of the impact ball is smaller than that of the exhaust channel so that the impact ball can roll back and forth along the extension direction of the exhaust channel. Each end of the exhaust channel is provided with a ball seat for sealing with the impact ball. When the impact ball is sealed with one of the ball seats, the impact ball blocks one of the two jet nozzles so that only one of the two jet nozzles sprays air towards the outer periphery of the stirring blade.

[0011] Furthermore, the inner diameter of the exhaust channel gradually decreases from the middle to both ends.

[0012] Furthermore, each of the stirring blades is provided with a first mounting cylinder and a second mounting cylinder at both ends along the rotation axis. The stirring frame is provided with a support shaft. The support shaft that is rotatably inserted into the first mounting cylinder is the first support shaft, and the support shaft that is rotatably inserted into the second mounting cylinder is the second support shaft. A return spring is provided in the first mounting cylinder, and the two ends of the return spring are respectively press-fitted with the first mounting cylinder and the first support shaft. The second mounting cylinder is provided with a top support protrusion, and the second support shaft is provided with a corresponding top pressing protrusion. When the positions of the top support protrusion and the top pressing protrusion are corresponding, the top support protrusion and the top pressing protrusion press-fit together, so that the stirring blade moves along its own rotation axis and squeezes the return spring. When the top support protrusion and the top pressing protrusion are misaligned, the return spring drives the stirring blade to return to its original position.

[0013] Furthermore, the stirring frame includes a stirring main shaft extending in the vertical direction. At least two horizontal bars are fixed to the lower end of the stirring main shaft. The extension direction of the horizontal bars is perpendicular to the stirring main shaft. The at least two horizontal bars are radially and evenly distributed along the circumference of the stirring main shaft. One end of each horizontal bar is fixedly connected to the stirring main shaft, and the other end is fixedly connected to a vertical bar. The extension direction of the vertical bar is parallel to the stirring main shaft, and the vertical bars are evenly spaced along the circumference of the rotating main shaft. Each stirring blade is located between two adjacent vertical bars. A first support shaft and a second support shaft, which are rotatably inserted and fitted with each stirring blade, are fixed on two adjacent vertical bars. The extension direction of the first support shaft and the second support shaft is perpendicular to the extension direction of the vertical bars. The conveying air passage includes a vertical air passage disposed in each vertical bar and a transverse air passage disposed in each first support shaft. One end of the transverse air passage is connected to the vertical air passage, and the other end is connected to the connecting air passage in the stirring blade.

[0014] Furthermore, the mixing tank includes a tank body and an upper cover plate connected to the upper end of the tank body. The upper cover plate is provided with multiple feed pipes, and the lower end of the tank body is provided with a discharge pipe. The mixing drive mechanism is located on the upper side of the upper cover plate. The mixing drive mechanism has an output shaft, and a first bevel gear is connected to the output shaft. The mixing main shaft is rotatably mounted at the center of the upper cover plate, and the upper end of the mixing main shaft extends above the upper cover plate and is connected to a second bevel gear. The first bevel gear and the second bevel gear mesh and drive each other.

[0015] Furthermore, the stirring spindle and the crossbar are respectively provided with connecting air passages, which are respectively connected to the vertical air passages in each vertical bar. The upper end of the stirring spindle is provided with an external air pipe connected to the connecting air passages, which is used to connect to an external gas compression pump.

[0016] The beneficial effects of this invention are as follows: The glue mixing device of this invention integrates an aeration mechanism inside a mixing mechanism. While the mixing mechanism stirs the liquid in the mixing tank, it also rotates along with the aeration mechanism, thereby uniformly spraying air into the entire mixing tank. Simultaneously, when the mixing drive mechanism drives the mixing frame to rotate, the mixing blades undergo both rotation and revolution. This causes the air nozzles on the mixing blades to spray air circumferentially around the mixing blades as the blades rotate, and also spray air around the circumference of the mixing tank as the blades revolve. This allows the aeration mechanism to spray air more evenly into the liquid throughout the mixing tank, thereby improving the mixing effect of the mixing mechanism. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Those skilled in the art should understand that these drawings are not necessarily drawn to scale.

[0018] Figure 1 This is a perspective view of one embodiment of an adhesive mixing device according to the present invention;

[0019] Figure 2 for Figure 1 A magnified schematic diagram of part D in the middle;

[0020] Figure 3 This is a schematic diagram of a mixing tank and a mixing mechanism in one embodiment of an adhesive mixing device of the present invention;

[0021] Figure 4 for Figure 3 A magnified schematic diagram of part E in the middle;

[0022] Figure 5 This is a front view of one embodiment of an adhesive mixing device according to the present invention;

[0023] Figure 6 for Figure 5 Sectional view along line AA;

[0024] Figure 7 for Figure 6 A magnified schematic diagram of part C in the middle;

[0025] Figure 8 This is a three-dimensional schematic diagram of the stirring fan blades in one embodiment of the glue mixing device of the present invention;

[0026] Figure 9 This is a side view of the stirring fan blade in one embodiment of the glue mixing device of the present invention;

[0027] Figure 10 for Figure 9 Sectional view along the BB direction.

[0028] In the diagram: 100, mixing tank; 111, support leg; 112, tank body; 113, top cover plate; 114, discharge pipe; 115, feed pipe; 116, mixing drive mechanism; 117, first bevel gear; 120, mixing frame; 121, second bevel gear; 122, external air pipe; 123, crossbar; 124, support shaft; 125, top pressure protrusion; 126, air conveying passage; 131, top support protrusion; 132, connecting air passage; 133, first mounting cylinder; 134, return spring; 135, impact ball; 136, mixing fan blade; 137, exhaust passage; 138, ball seat; 139, one-way valve. Detailed Implementation

[0029] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0030] One embodiment of the adhesive mixing device of the present invention, such as Figures 1 to 10 As shown, the adhesive mixing device includes a mixing tank 100 and a stirring mechanism located inside the mixing tank 100. In this embodiment, a support leg 111 is fixedly connected to the lower end of the mixing tank 100, and the support leg 111 is used to support and fix the mixing tank 100. The mixing tank 100 includes a tank body 112 and an upper cover plate 113 connected to the upper end of the tank body 112. Three feed pipes 115 are arranged side by side and spaced apart on the upper cover plate 113, and the three raw materials used to mix into adhesive enter the mixing tank 100 through the three feed pipes 115 respectively. A discharge pipe 114 is connected to the lower end of the tank body 112, and the mixed adhesive is discharged from the mixing tank 100 through the discharge pipe 114. A stirring drive mechanism 116 is provided on the upper side of the upper cover plate 113 for driving the stirring mechanism inside the mixing tank 100 to rotate, and the rotation of the stirring mechanism mixes the liquid entering the mixing tank 100. The glue mixing device also includes an aeration mechanism. In this invention, the aeration mechanism is integrated inside the stirring mechanism. While the stirring mechanism is stirring the liquid in the stirring tank 100, the aeration mechanism sprays air into the liquid in the stirring tank 100 to improve the mixing effect of the stirring mechanism on the liquid.

[0031] In this invention, the stirring mechanism includes a rotatably mounted stirring frame 120 and stirring blades 136 rotatably mounted on the stirring frame 120. Multiple stirring blades 136 are provided, each with a spiral structure, and are evenly spaced along the circumference of the stirring frame 120. The rotation axis of the stirring frame 120 extends vertically, and the rotation axis of the stirring blades 136 is perpendicular to the rotation axis of the stirring frame 120. When the stirring drive mechanism 116 drives the stirring frame 120 to rotate, the stirring blades 136 rotate around their own rotation axis and also rotate circumferentially around the rotation axis of the stirring frame 120. That is, the stirring blades 136 not only rotate around their own rotation axis but also revolve around the rotation axis of the stirring frame 120. The aeration mechanism includes a conveying air passage 126 disposed in the stirring frame 120 and an exhaust passage 137 disposed in the stirring blade 136. The exhaust passage 137 is connected to the conveying air passage 126. One end of the stirring blade 136 is provided with an air jet port, which is connected to the exhaust passage 137. The extension direction of the exhaust passage 137 is perpendicular to the rotation axis of the stirring blade 136, and the air jet port is located at one end of the exhaust passage 137.

[0032] In this embodiment, the stirring blade 136 is provided with a connecting air passage 132, which extends along the rotation axis of the stirring blade 136. One end of the connecting air passage 132 is connected to the conveying air passage 126, and the other end is connected to the middle of the exhaust passage 137. In this embodiment, the exhaust passage 137 passes through the opposite sides of the stirring blade 136. Each stirring blade 136 is provided with two jet nozzles, which are located at both ends of the exhaust passage 137. Each jet nozzle is provided with a one-way valve 139 for gas to be discharged from the exhaust passage 137. When the stirring drive mechanism 116 drives the stirring frame 120 to rotate, the stirring blades 136 simultaneously rotate and revolve. As the stirring blades 136 rotate, the air nozzles on the stirring blades 136 spray air around the circumference of the stirring blades 136. At the same time, as the stirring blades 136 revolve, they also spray air around the circumference of the stirring tank 100. In this way, the aeration mechanism can spray air more evenly on the liquid in the entire stirring tank 100, thereby improving the stirring effect of the stirring mechanism on the liquid.

[0033] In this embodiment, an impact ball 135 is rolled within the exhaust channel 137. The outer diameter of the impact ball 135 is smaller than that of the exhaust channel 137, so that the impact ball 135 can roll back and forth along the extension direction of the exhaust channel 137. Each end of the exhaust channel 137 is provided with a ball seat 138 for sealing with the impact ball 135. When the impact ball 135 is sealed with one of the ball seats 138, the impact ball 135 blocks one of the two jet nozzles, causing only one of the two jet nozzles to spray air towards the outer periphery of the stirring blade 136. It should be noted that the stirring blade 136 undergoes both rotation and revolution when the stirring frame 120 rotates. Since the rotation of the stirring blade 136 is generated by the pushing force of the liquid, the rotational speed of the stirring frame 120 is greater than that of the stirring blade 136. In other words, the rotational speed of the stirring blade 136 is less than its revolutional speed. As a result, the centrifugal force generated by the revolution on the impact ball 135 inside the stirring blade 136 is greater than that generated by the rotation. Consequently, the impact ball 135 moves towards the end of the stirring blade 136 located on the periphery of the stirring frame 120. As the stirring blade 136 continues to rotate, the impact ball 135 inside the stirring blade 136 rolls back and forth in the exhaust channel 137, causing the impact ball 135 to alternately seal with the ball seats 138 at both ends of the exhaust channel 137. When the impact ball 135 is sealed with one of the ball seats 138, only one of the two jet nozzles on the stirring blade 136 sprays air into the stirring tank 100. When only one jet nozzle on each stirring blade 136 is in operation, the impact ball 135 blocks one jet nozzle on the stirring blade 136 that faces the periphery of the stirring frame 120, causing the jet nozzle facing the center of the stirring frame 120 to spray air towards the center of the stirring frame 120. When neither of the impact balls 135 is in sealed engagement with the ball seats 138 at both ends, the two jet nozzles on the stirring blade 136 spray air simultaneously in opposite directions.

[0034] In this embodiment, in order to avoid the impact ball 135 affecting the gas flow in the exhaust channel 137, the inner diameter of the exhaust channel 137 gradually decreases from the middle to both ends.

[0035] In this embodiment, each of the stirring blades 136 has a first mounting cylinder 133 and a second mounting cylinder at both ends along the rotation axis. The stirring frame 120 is provided with a support shaft 124. The support shaft 124 that is rotatably inserted into the first mounting cylinder 133 is the first support shaft, and the support shaft 124 that is rotatably inserted into the second mounting cylinder is the second support shaft. A return spring 134 is provided in the first mounting cylinder 133, and the two ends of the return spring 134 are respectively connected to the top of the first mounting cylinder 133 and the first support shaft. The second mounting cylinder is provided with a top support protrusion 131, and the second support shaft is provided with a corresponding top pressing protrusion 125. When the positions of the top support protrusion 131 and the top pressing protrusion 125 are corresponding, the top support protrusion 131 and the top pressing protrusion 125 press against each other, so that the stirring blade 136 moves along its own rotation axis and squeezes the return spring 134. When the top support protrusion 131 and the top pressing protrusion 125 are misaligned, the return spring 134 drives the stirring blade 136 to return to its original position.

[0036] In this embodiment, the stirring frame 120 includes a stirring main shaft extending in the vertical direction. At least two crossbars 123 are fixed to the lower end of the stirring main shaft. In this embodiment, four stirring blades 136 and four crossbars 123 are provided. The extension direction of the crossbars 123 is perpendicular to the stirring main shaft. The four crossbars 123 are radially distributed evenly along the circumference of the stirring main shaft. One end of each crossbar 123 is fixedly connected to the stirring main shaft, and the other end is fixedly connected to a vertical rod. The extension direction of the vertical rods is parallel to the stirring main shaft, and each vertical rod is evenly spaced along the circumference of the rotating main shaft. Each stirring blade 136 is located between two adjacent vertical rods. A first support shaft and a second support shaft, which are rotatably inserted into each stirring blade 136, are fixed to two adjacent vertical rods. The extension directions of the first support shaft and the second support shaft are perpendicular to the extension direction of the vertical rods. The conveying air passage 126 includes vertical air passages disposed within each vertical rod and horizontal air passages disposed within each first support shaft. One end of the horizontal air passage is connected to the vertical air passage, and the other end is connected to the connecting air passage 132 within the stirring fan blade 136. Connecting air passages are respectively provided within the stirring main shaft and the crossbar 123, and these connecting air passages are respectively connected to the vertical air passages within each vertical rod. An external air pipe 122 connected to the connecting air passages is provided at the upper end of the stirring main shaft, and the external air pipe 122 is used to connect to an external gas compression pump.

[0037] In this embodiment, the stirring drive mechanism 116 is a drive motor with an output shaft. A first bevel gear 117 is connected to the output shaft. The stirring spindle is rotatably mounted at the center of the upper cover plate 113, and the upper end of the stirring spindle extends above the upper cover plate 113 and is connected to a second bevel gear 121. The first bevel gear 117 and the second bevel gear 121 mesh and transmit power.

[0038] In this embodiment, in order for each stirring blade 136 to stir and spray liquid at different depths within the stirring tank 100, the depths of the four stirring blades 136 within the stirring tank 100 are increased sequentially.

[0039] In use, the adhesive mixing device of the present invention first places three raw materials into the mixing tank 100 through the feed pipe 115. Then, the stirring drive mechanism 116 rotates, thereby driving the stirring frame 120 to rotate. Simultaneously, the stirring frame 120 rotates, causing the stirring blades 136 to rotate synchronously. Since the stirring blades 136 have a spiral structure, under the action of the liquid, the stirring blades 136 on the stirring frame 120 will rotate around their own axis of rotation. During the revolution and rotation of the stirring blades 136, under the centrifugal force generated by the stirring frame 120, the impact ball 135 inside the stirring blades 136 moves towards the end of the stirring blades 136 away from the center of the stirring frame 120, blocking the air jet at that end, while the air jet on the stirring blades 136 near the interior of the stirring frame 120 continues to eject gas.

[0040] Since the rotational speed of the stirring frame 120 is greater than the rotational speed of the stirring blades 136, as the stirring blades 136 continuously rotate, the impact balls 135 will roll back and forth inside the stirring blades 136, thereby alternately blocking the air jets at both ends of the stirring blades 136. At the same time, the reciprocating rolling of the impact balls 135 will strike the ball seat 135, causing the stirring blades 136 to vibrate. The vibration of the stirring blades 136 will accelerate the upward movement of bubbles in the liquid.

[0041] When the top support protrusion 131 on the stirring blade 136 rotates to the position corresponding to the top pressure protrusion 125, the top support protrusion 131 and the top pressure protrusion 125 press against each other, causing the stirring blade 136 to move along its own rotation axis and press against the return spring 134, thus reducing the rotational speed of the stirring blade 136. This prevents the impact ball 135 from remaining in the middle of the exhaust channel 137, ensuring that the impact ball 135 can block the exhaust port. When the top support protrusion 131 and the top pressure protrusion 125 are misaligned, the return spring 134 drives the stirring blade 136 to return to its original position.

[0042] When the liquid concentration in a certain area of ​​the mixing tank 100 is high, the rotation speed of the mixing blades 136 in that area will decrease, thereby slowing down the speed at which the impact ball 135 blocks the jet nozzle, thus increasing the jet volume in that area and improving the fluidity of the liquid in the area with higher concentration.

[0043] After the liquid in the mixing tank 100 is stirred evenly, the gas supply is stopped, and then the mixing frame 120 is rotated for a period of time to allow the air bubbles inside the liquid to be expelled. Finally, the glue is discharged from the mixing tank 100 through the discharge pipe 114.

[0044] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A glue mixing device, comprising a mixing tank (100) and a stirring mechanism located within the mixing tank (100), further comprising an aeration mechanism for spraying air into the liquid within the mixing tank (100), and the stirring mechanism for stirring the liquid within the mixing tank (100), characterized in that, The stirring mechanism includes a rotatably mounted stirring frame (120) and rotatably mounted stirring blades (136) on the stirring frame (120). The stirring frame (120) is connected to a stirring drive mechanism (116). When the stirring drive mechanism (116) drives the stirring frame (120) to rotate, the stirring blades (136) rotate around their own rotation axis and circumferentially around the rotation axis of the stirring frame (120). The aeration mechanism includes a conveying air passage (126) disposed in the stirring frame (120) and an exhaust passage (137) disposed in the stirring blades (136). The exhaust passage (137) is connected to the conveying air passage (126). The stirring blade (136) has an air jet at one end, which is connected to the exhaust channel (137). The air jet follows the rotation of the stirring blade (136) and sprays air around the stirring blade (136). The rotation axis of the stirring frame (120) extends in the vertical direction. There are multiple stirring blades (136), each with a spiral structure. The multiple stirring blades (136) are evenly spaced around the circumference of the stirring frame (120). The rotation axis of the stirring blades (136) is perpendicular to the rotation axis of the stirring frame (120). The extension direction of the exhaust channel (137) is perpendicular to the stirring blades (136). The rotation axis of the stirring blade (136) is such that the jet nozzle is located at one end of the exhaust channel (137); the exhaust channel (137) passes through the opposite sides of the stirring blade (136), and each stirring blade (136) is provided with two jet nozzles, which are located at the two ends of the exhaust channel (137), and each jet nozzle is provided with a one-way valve (139) for gas to be discharged from the exhaust channel (137) to the outside; the stirring blade (136) is provided with a connecting air passage (132), which extends along the rotation axis of the stirring blade (136), and one end of the connecting air passage (132) is connected to the conveying air passage (126), and the other end is connected to the conveying air passage (126). The end is connected to the middle of the exhaust channel (137); an impact ball (135) is rolled inside the exhaust channel (137), the outer diameter of the impact ball (135) is smaller than that of the exhaust channel (137), so that the impact ball (135) can roll back and forth along the extension direction of the exhaust channel (137). The two ends of the exhaust channel (137) are respectively provided with ball seats (138) for sealing with the impact ball (135). When the impact ball (135) is sealed with one of the ball seats (138), the impact ball (135) blocks one of the two jet ports, so that only one of the two jet ports sprays air towards the outer periphery of the stirring fan blade (136).

2. The adhesive mixing apparatus according to claim 1, characterized in that: The inner diameter of the exhaust passage (137) gradually decreases from the middle to both ends.

3. The adhesive mixing device according to claim 2, characterized in that: Each of the stirring blades (136) is provided with a first mounting cylinder (133) and a second mounting cylinder at both ends along the rotation axis. The stirring frame (120) is provided with a support shaft (124). The support shaft (124) that is rotatably inserted into the first mounting cylinder (133) is the first support shaft, and the support shaft (124) that is rotatably inserted into the second mounting cylinder is the second support shaft. The first mounting cylinder (133) is provided with a return spring (134). The two ends of the return spring (134) are respectively press-fitted into the first mounting cylinder (133) and the first support shaft. The second mounting cylinder is provided with a top support protrusion (131), and the second support shaft is provided with a corresponding top pressing protrusion (125). When the top support protrusion (131) and the top pressing protrusion (125) are in the same position, the top support protrusion (131) and the top pressing protrusion (125) press against each other to make the stirring blade (136) move along its own rotation axis and squeeze the return spring (134). When the top support protrusion (131) and the top pressing protrusion (125) are misaligned, the return spring (134) drives the stirring blade (136) to return to its original position.

4. The adhesive mixing device according to claim 3, characterized in that: The stirring frame (120) includes a stirring main shaft extending in the vertical direction. At least two horizontal bars (123) are fixed to the lower end of the stirring main shaft. The extension direction of the horizontal bars (123) is perpendicular to the stirring main shaft. The at least two horizontal bars (123) are radially and evenly distributed along the circumference of the stirring main shaft. One end of each horizontal bar (123) is fixedly connected to the stirring main shaft, and the other end is fixedly connected to a vertical bar. The extension direction of the vertical bar is parallel to the stirring main shaft, and the vertical bars are evenly spaced along the circumference of the rotating main shaft. Each stirring blade... (136) The first support shaft and the second support shaft, which are respectively located between two adjacent vertical rods and are rotatably inserted with each stirring fan blade (136), are respectively fixed on the two adjacent vertical rods. The extension direction of the first support shaft and the second support shaft is perpendicular to the extension direction of the vertical rod. The conveying air passage (126) includes a vertical air passage set in each vertical rod and a transverse air passage set in each first support shaft. One end of the transverse air passage is connected to the vertical air passage, and the other end is connected to the connecting air passage (132) in the stirring fan blade (136).

5. The adhesive mixing device according to claim 4, characterized in that: The mixing tank (100) includes a tank body (112) and an upper cover plate (113) connected to the upper end of the tank body (112). The upper cover plate (113) is provided with a plurality of feed pipes (115). The lower end of the tank body (112) is provided with a discharge pipe (114). The mixing drive mechanism (116) is located on the upper side of the upper cover plate (113). The mixing drive mechanism (116) has an output shaft. A first bevel gear (117) is connected to the output shaft. The mixing main shaft is rotatably installed at the center of the upper cover plate (113). The upper end of the mixing main shaft extends above the upper cover plate (113) and is connected to a second bevel gear (121). The first bevel gear (117) and the second bevel gear (121) mesh and drive each other.

6. The adhesive mixing apparatus according to claim 5, characterized in that: The stirring spindle and the crossbar (123) are respectively provided with connecting air passages. The connecting air passages are respectively connected to the vertical air passages in each vertical bar. The upper end of the stirring spindle is provided with an external air pipe (122) connected to the connecting air passages. The external air pipe (122) is used to connect to an external gas compression pump.

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