Air pre-cooling system and application in hot melt adhesive grinding and pre-cooling

Abstract

The invention provides an air pre-cooling system and application in hot melt adhesive grinding and pre-cooling, and belongs to the technical field of air pre-cooling, the air pre-cooling system comprises an air supply system and a discharging barrel, a drainage pipe is arranged in the discharging barrel, a cooling assembly is arranged in the drainage pipe, a screening assembly is arranged on the outer side of the drainage pipe, and the cooling assembly is arranged on the outer side of the screening assembly. The cooling assembly can cool gas entering the drainage pipe, the screening assembly can screen hot melt adhesive particles entering the discharging barrel, and the cooling assembly can adjust the flow of the cooling gas according to the weight of the hot melt adhesive particles on the screening assembly. By arranging the screening disc, hot melt adhesive entering the feeding pipe can move along the spiral track of the screening disc, screening of hot melt adhesive particles is achieved, the pre-cooling time of large hot melt adhesive particles is prolonged, the situation that the large hot melt adhesive particles are hard outside and soft inside due to the short cooling time is avoided, the cooling uniformity of the hot melt adhesive particles is improved, and the service life of the hot melt adhesive particles is prolonged. The crushing quality is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of air precooling, and in particular relates to an air precooling system and an application thereof in precooling of hot melt adhesive grinding powder. Background Art

[0002] Air precooling is a technical means of cooling by air. Hot melt adhesive is an environmentally friendly chemical product. Hot melt adhesive is solid at room temperature, but becomes very viscous and has increased fluidity after being heated. Therefore, it is necessary to precool before grinding to prevent the hot melt adhesive from sticking together during the grinding process due to its viscosity.

[0003] Taking into account the good fluidity of granular hot melt adhesive and its easy uniform dispersion and processing in grinding equipment, granular hot melt adhesive is often used for grinding. However, there are differences in the size of granular hot melt adhesive, and the pre-cooling time of hot melt adhesive particles of different sizes is also different, resulting in uneven cooling of hot melt adhesive particles during the pre-cooling process, which may cause larger hot melt adhesive particles to form a "hard outside and soft inside" state, resulting in high viscosity inside the hot melt adhesive, affecting subsequent crushing effects. In addition, during the process of pre-cooling the hot melt adhesive, although the gas can cool the hot melt adhesive particles when it comes into contact with the hot melt adhesive particles, the temperature of the gas will also increase with use, affecting the overall pre-cooling effect and reducing work efficiency.

[0004] Therefore, in order to solve the above problems, it is necessary to provide an air precooling system. Summary of the invention

[0005] The purpose of the present invention is to provide an air precooling system, which aims to solve the problem in the prior art that there are differences in the sizes of granular hot melt adhesives. The precooling time for hot melt adhesive particles of different sizes is also different, resulting in uneven cooling of the hot melt adhesive particles during the precooling process. This may cause larger hot melt adhesive particles to form a "hard outside and soft inside" state, resulting in the hot melt adhesive still having a high viscosity, affecting the subsequent crushing effect.

[0006] To achieve the above object, the present invention provides the following technical solutions: An air precooling system includes an air supply system and a discharge barrel, wherein a drainage pipe is provided in the discharge barrel, and a cooling component is provided inside the drainage pipe, and a screening component is provided outside the drainage pipe, wherein the cooling component can cool the gas entering the drainage pipe, the screening component can screen the hot melt adhesive particles entering the discharge barrel, and the cooling component can adjust the cooling gas flow rate by the weight of the hot melt adhesive particles on the screening component.

[0007] Preferably, the cooling component includes an air intake bin, the bottom of the air intake bin is fixedly connected to a flow guide pipe, the bottom of the flow guide pipe is fixedly connected to an exhaust bin, the diameter of the flow guide pipe is smaller than the diameter of the air intake bin, when the gas inside the air intake bin enters the flow guide pipe, the gas flow rate can be increased, the pressure can be reduced, and the gas temperature can be cooled.

[0008] Preferably, a movable plate is provided on the top of the air intake bin, a first elastic member is connected between the bottom of the movable plate and the inner wall of the air intake bin, a connecting rod is provided on the inner side of the first elastic member, a blocking member is provided inside the exhaust bin, both ends of the connecting rod are fixedly connected to the blocking member and the movable plate respectively, the connecting rod can move inside the guide pipe, the blocking member can seal the connection between the guide pipe and the exhaust bin, moving the connecting rod can adjust the distance between the blocking member and the guide pipe, and can adjust the gas flow rate from the guide pipe into the exhaust bin.

[0009] Preferably, the screening component includes a sliding sleeve, the outer wall of the sliding sleeve is fixedly connected with a spirally arranged screening plate, the outer wall of the screening plate is slidably connected to the inner wall of the discharge barrel, and a plurality of filter holes are provided on the screening plate. The hot melt adhesive particles entering the discharge barrel can move along a spiral trajectory on the screening plate, and the hot melt adhesive particles can be screened through the filter holes.

[0010] Preferably, the drainage pipe includes a feed pipe, which is L-shaped and has one end passing through a discharge barrel and the other end fixedly connected to a mounting pipe. A discharge port is provided inside the feed pipe. A filter screen is fixedly connected inside the feed pipe to prevent hot melt adhesive particles from entering the mounting pipe. The hot melt adhesive particles entering the feed pipe can fall onto the screen plate through the discharge port.

[0011] Preferably, the outer walls of the air intake bin and the exhaust bin are fixedly connected to the inner wall of the mounting tube, the outer wall of the movable plate is slidably connected to the inner wall of the mounting tube, the inner wall of the exhaust bin is provided with a plurality of sliding grooves, the inner wall of the mounting tube is provided with limiting grooves which are the same in number and corresponding in position as the sliding grooves, the interior of each of the limiting grooves is slidably connected with a connecting piece fixedly connected to the sealing piece, and each of the connecting pieces is slidably connected to the inner wall of the corresponding sliding groove, the top of the sliding sleeve is fixedly connected with an adjusting sleeve slidably connected to the outer wall of the mounting tube, and each of the connecting pieces is fixedly connected to the inner wall of the adjusting sleeve at one end away from the sealing piece.

[0012] Preferably, an exhaust pipe is fixedly connected to the bottom of the mounting tube, a plurality of exhaust ports are provided on the outer wall of the exhaust pipe, the inner wall of the sliding sleeve is slidably connected to the outer wall of the exhaust pipe, a plurality of air outlet holes are provided on the outer wall of the sliding sleeve, and the gas entering the exhaust pipe can pass through the exhaust ports and the air outlet holes to blow the hot melt adhesive particles on the screen plate.

[0013] Preferably, a vibration member is fixedly connected to the bottom of the exhaust duct, and a connecting sleeve is fixedly connected to the bottom of the sliding sleeve and is slidably connected to the outer wall of the vibration member. A plurality of accommodating grooves are provided inside the vibration member, and a plurality of equidistantly distributed protrusions are fixedly connected to the inside of each of the accommodating grooves. A limiting member whose number is the same as the accommodating grooves and whose position corresponds to that of the accommodating grooves is fixedly connected to the inner side of the sliding sleeve, and each of the limiting members is slidably connected to the inner wall of the corresponding accommodating groove. A chamber is provided inside the limiting member, and an extrusion member is slidably connected to the inside of each of the chambers. A second elastic member is connected between the side of each extrusion member away from the vibration member and the inner wall of the corresponding chamber. Moving the connecting sleeve can make the extrusion member intermittently contact the protrusion inside the corresponding accommodating groove, thereby generating vibration.

[0014] Preferably, the air supply system includes a fan, a feeding pipe and a feed port, the feeding pipe is connected to one end of the feeding pipe that passes through the discharge barrel, and the hot melt adhesive particles entering the feeding pipe through the feed port can be blown into the discharge barrel by the fan.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention provides a screening plate, so that the hot melt adhesive entering the inside of the feed pipe can fall onto the screening plate through the screening plate when it moves to the discharge port, and move along the spiral trajectory of the screening plate. In this process, smaller hot melt adhesive particles can directly fall to the bottom of the discharge barrel through the filter holes for discharge, while larger hot melt adhesive particles will be retained to continue to move on the screening plate, thereby realizing the screening of the hot melt adhesive particles. Therefore, the pre-cooling time of the larger hot melt adhesive particles is increased by the movement of the larger hot melt adhesive particles on the screening plate, thereby avoiding the state of "hard outside and soft inside" formed by the shorter cooling time of the larger hot melt adhesive particles, thereby improving the uniformity of the cooling of the hot melt adhesive particles and improving the crushing quality.

[0016] 2. The present invention provides a guide pipe. When the material is fed into the discharge barrel through the fan and the feed pipe, the granular hot melt adhesive flows to the discharge port and can fall onto the screen plate through the discharge port. Since the wind speed of the fan is relatively large and the feed pipe corresponds to the discharge port of the feed pipe, a large amount of airflow passes through the filter screen and enters the interior of the installation pipe, and then passes through the air inlet bin and the guide pipe to enter the interior of the exhaust bin. In this process, the gas can increase the flow rate, reduce the pressure, and cool the gas. The cooled gas can enter the exhaust pipe, pass through the exhaust port and the air outlet, and blow air to the hot melt adhesive particles on the screen plate. The larger hot melt adhesive particles on the screen plate can be further cooled, thereby improving the overall pre-cooling effect and improving work efficiency.

[0017] 3. The present invention is arranged by an adjusting sleeve and a connecting sleeve. During use, when the hot melt adhesive particles on the screen plate increase, the screen plate will move downward, and the sliding sleeve will drive the adjusting sleeve and the connecting sleeve to move downward synchronously. In the process of the adjusting sleeve moving downward, the sealing member can be separated from the blockage at the connection between the guide tube and the exhaust bin, and the gap between the sealing member and the guide tube can be adjusted, so as to adjust the gas flow entering the exhaust bin. Therefore, the gas discharge amount of the cooling component can be adjusted by the amount of hot melt adhesive particles on the screen plate, so as to avoid the increase of hot melt adhesive particles on the screen plate and the influence of pre-cooling effect. In the process of the connecting sleeve moving downward, the extrusion member can intermittently contact the convex block inside the corresponding accommodating groove, so as to generate vibration. The vibration is transmitted to the screen plate, so as to cause the hot melt adhesive particles in the screen plate to vibrate, so as to effectively avoid the blockage of the filter holes of the screen plate and improve the screening effect of the screen plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings: Figure 1 It is a schematic diagram of the overall structure of the air precooling system of the present invention; Figure 2 It is a structural schematic diagram of the material discharge barrel of the present invention; Figure 3 This is a schematic diagram of the internal structure of the feed barrel of the present invention; Figure 4 The structural intention of the screening assembly and the drainage tube of the present invention; Figure 5 It is a structural cross-sectional view of the screening assembly and the drainage tube of the present invention; Figure 6 It is a structural schematic diagram of the screening tray of the present invention; Figure 7 It is a schematic diagram of the structure of the exhaust pipe of the present invention; Figure 8 It is a structural schematic diagram of the cooling component and the regulating sleeve of the present invention; Fig. 9 It is a schematic diagram of the overall structure of the cooling component of the present invention; Fig.10 This is a schematic diagram of the internal structure of the cooling component of the present invention; Fig.11 It is a structural schematic diagram of the adjustment sleeve of the present invention; Fig.12 This is a schematic diagram of the internal structure of the adjustment sleeve of the present invention; Fig.13 This is a schematic diagram of the structure of the adjustment sleeve and the vibration member of the present invention.

[0019] In the figure: 1. air supply system; 11. fan; 12. feed pipe; 13. feed port; 2. discharge barrel; 3. drainage pipe; 31. feed pipe; 32. mounting pipe; 33. discharge port; 34. filter; 35. limit groove; 36. exhaust pipe; 37. exhaust port; 38. vibration member; 39. receiving groove; 310. bump; 4. cooling component; 41. air inlet bin; 42. guide pipe; 43. exhaust bin; 44. movable plate; 45. first elastic member; 46. connecting rod; 47. blocking member; 48. slide groove; 49. connecting member; 5. screening component; 51. sliding sleeve; 52. screening disc; 53. filter hole; 54. adjusting sleeve; 55. air outlet; 56. connecting sleeve; 57. limit member; 58. chamber; 59. extrusion member; 510. second elastic member. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0021] Embodiment 1 Existing hot melt adhesive grinding often uses granular hot melt adhesive for grinding, but the sizes of granular hot melt adhesives vary. The pre-cooling time of hot melt adhesive particles of different sizes is also different, resulting in uneven cooling of the hot melt adhesive particles during the pre-cooling process. This may cause larger hot melt adhesive particles to form a state of "hard outside and soft inside", resulting in the hot melt adhesive still having a high viscosity inside, affecting the subsequent crushing effect.

[0022] See also Figures 1 to 6 The present invention provides the following technical solutions: an air precooling system, including an air supply system 1 and a discharge barrel 2, a drainage pipe 3 is provided in the discharge barrel 2, and a cooling component 4 is provided inside the drainage pipe 3, and a screening component 5 is provided on the outside of the drainage pipe 3, the cooling component 4 can cool the gas entering the drainage pipe 3, the screening component 5 can screen the hot melt adhesive particles entering the discharge barrel 2, and the cooling component 4 can adjust the cooling gas flow rate by the weight of the hot melt adhesive particles on the screening component 5.

[0023] like Figure 6 As shown, the screening component 5 includes a sliding sleeve 51, the outer wall of the sliding sleeve 51 is fixedly connected with a spirally arranged screening plate 52, the outer wall of the screening plate 52 is slidingly connected to the inner wall of the discharge barrel 2, and a plurality of filter holes 53 are provided on the screening plate 52. The hot melt adhesive particles entering the discharge barrel 2 can move along the spiral trajectory on the screening plate 52, and the hot melt adhesive particles can be screened through the filter holes 53.

[0024] like Figure 4 As shown, the drainage pipe 3 includes a feed pipe 31, which is L-shaped, and one end of the feed pipe passes through the discharge barrel 2, and the other end is fixedly connected to a mounting pipe 32. A discharge port 33 is opened inside the feed pipe 31, and a filter screen 34 is fixedly connected inside the feed pipe 31 to prevent hot melt adhesive particles from entering the mounting pipe 32. The hot melt adhesive particles entering the feed pipe 31 can fall onto the screen plate 52 through the discharge port 33.

[0025] like Figure 7 As shown, a filter screen 34 is arranged on the side of the discharge port 33 away from the feed pipe 12 . When the granular hot melt adhesive flows inside the feed pipe 31 and contacts the filter screen 34 , it can be blocked by the filter screen 34 , ensuring that the granular hot melt adhesive can only fall from the discharge port 33 .

[0026] like Figure 1 As shown, the air supply system 1 includes a fan 11, a feeding pipe 12 and a feeding port 13. The feeding pipe 12 is connected to the feeding pipe 31 through one end of the lower barrel 2. The hot melt adhesive particles entering the feeding pipe 12 through the feeding port 13 can be blown by the fan 11 to the lower barrel 2. During this process, the hot melt adhesive particles can be cooled by the airflow blown out by the fan 11. A plurality of exhaust holes are provided on the surface of the lower barrel 2. The gas entering the lower barrel 2 can be discharged to the outside through the exhaust holes. The prior art is not described in detail.

[0027] In actual use, the hot melt adhesive particles entering the feed pipe 12 through the feed port 13 can be blown by the fan 11 to the feed pipe 31 inside the discharge barrel 2. When the granular hot melt adhesive flows to the discharge port 33, it can fall onto the screening plate 52 through the discharge port 33 and move along the spiral trajectory of the screening plate 52. In this process, smaller hot melt adhesive particles can pass through the filter holes 53 and directly fall to the bottom of the discharge barrel 2 for discharge, while larger hot melt adhesive particles will be retained to continue to move on the screening plate 52 to achieve screening of the hot melt adhesive particles. Therefore, the pre-cooling time of the larger hot melt adhesive particles can be increased by moving the larger hot melt adhesive particles on the screening plate 52, thereby avoiding the larger hot melt adhesive particles from forming a "hard outside and soft inside" state, improving the uniformity of cooling of the hot melt adhesive particles, and improving the crushing quality.

[0028] According to actual use requirements, the number of turns and length of the spiral of the screening plate 52 can be set by oneself to achieve the setting of the residence time of larger hot melt adhesive particles on the screening plate 52, and the size of the filter hole 53 can be set by oneself to adapt to the screening of hot melt adhesives of different particle sizes.

[0029] To summarize, the present invention sets a screening plate 52, so that the hot melt adhesive entering the inside of the feed pipe 31 can fall onto the screening plate 52 through the discharge port 33 when it moves to the discharge port 33, and move along the spiral trajectory of the screening plate 52. During this process, smaller hot melt adhesive particles can directly fall to the bottom of the discharge barrel 2 through the filter holes 53 for discharge, while larger hot melt adhesive particles will be retained to continue to move on the screening plate 52, thereby realizing the screening of the hot melt adhesive particles. Therefore, the pre-cooling time of the larger hot melt adhesive particles is increased by the movement of the larger hot melt adhesive particles on the screening plate 52, thereby avoiding the state of "hard outside and soft inside" formed by the shorter cooling time of the larger hot melt adhesive particles, thereby improving the uniformity of the cooling of the hot melt adhesive particles and improving the crushing quality.

[0030] Embodiment 2 Based on the above embodiment, during the movement of the hot melt adhesive particles inside the feed pipe, the gas from the fan can cool the hot melt adhesive particles when in contact with the hot melt adhesive particles, but the temperature of the gas will also increase with use, resulting in a higher temperature of the gas entering the discharge barrel, and being unable to effectively and quickly cool the hot melt adhesive particles on the screen plate, affecting the overall pre-cooling effect and reducing work efficiency.

[0031] See also Figures 3 to 10 The cooling component 4 includes an air intake bin 41, the bottom of the air intake bin 41 is fixedly connected to a guide pipe 42, the bottom of the guide pipe 42 is fixedly connected to an exhaust bin 43, the diameter of the guide pipe 42 is smaller than the diameter of the air intake bin 41, when the gas inside the air intake bin 41 enters the guide pipe 42, the gas flow rate can be increased, the pressure can be reduced, and the gas temperature can be cooled.

[0032] According to the principles of fluid mechanics, when the pipe diameter decreases, the gas flow rate will increase accordingly. The increase in flow rate will reduce the gas pressure. In the process of reducing pressure, the gas needs to overcome flow resistance, which will cause the internal energy of the gas to decrease, thereby reducing the temperature. Therefore, the gas temperature can be reduced by reducing the gas pressure.

[0033] An exhaust pipe 36 is fixedly connected to the bottom of the mounting tube 32, and a plurality of exhaust ports 37 are provided on the outer wall of the exhaust pipe 36. The inner wall of the sliding sleeve 51 is slidably connected to the outer wall of the exhaust pipe 36, and a plurality of air outlet holes 55 are provided on the outer wall of the sliding sleeve 51. The gas entering the exhaust pipe 36 can pass through the exhaust ports 37 and the air outlet holes 55, and can blow the hot melt adhesive particles on the screening plate 52.

[0034] As the sliding sleeve 51 slides up and down on the outer wall of the exhaust pipe 36, the exhaust port 37 is always on the inner side of the sliding sleeve 51. The purpose is to ensure that the gas entering the exhaust pipe 36 can always pass through the exhaust port 37 and the air outlet 55 to blow and cool the hot melt adhesive particles on the screen plate 52 during the movement of the sliding sleeve 51.

[0035] In actual use, the hot melt adhesive particles entering the feed pipe 12 through the feed port 13 can be blown by the fan 11 to the feed pipe 31 inside the discharge barrel 2. When the granular hot melt adhesive flows to the discharge port 33, it can fall onto the sieve plate 52 through the discharge port 33. Since the wind speed of the fan 11 is relatively large and the feed pipe 31 corresponds to the discharge port of the feed pipe 12, a large amount of airflow passes through the filter screen 34 and enters the interior of the installation pipe 32, and then enters the feed pipe 31 through the gap between the movable plate 44 and the installation pipe 32. The gas enters the air bin 41 and enters the exhaust bin 43 from the guide pipe 42. During this process, the gas can increase the flow rate, reduce the pressure, and cool the gas. The gas after cooling can enter the exhaust pipe 36, pass through the exhaust port 37 and the air outlet 55, and blow air to the hot melt adhesive particles on the screen plate 52. The larger hot melt adhesive particles on the screen plate 52 can be further cooled, thereby improving the overall pre-cooling effect and improving work efficiency.

[0036] To sum up, the present invention provides the guide pipe 42, and when the material is fed to the inside of the discharge barrel 2 through the fan 11 and the feeding pipe 12, when the granular hot melt adhesive flows to the discharge port 33, it can fall onto the screen plate 52 through the discharge port 33. Since the wind speed of the fan 11 is relatively large, and the feeding pipe 31 corresponds to the discharge port of the feeding pipe 12, a large amount of airflow passes through the filter 34 and enters the inside of the mounting pipe 32, and then passes through the air intake bin 41 and the guide pipe 42 to enter the inside of the exhaust bin 43. In this process, the gas can increase the flow rate, reduce the pressure, and cool the gas. The cooled gas can enter the exhaust pipe 36, pass through the exhaust port 37 and the air outlet 55, and blow air to the hot melt adhesive particles on the screen plate 52, and further cool down the larger hot melt adhesive particles on the screen plate 52, thereby improving the overall pre-cooling effect and improving work efficiency.

[0037] Embodiment 3 Based on the above embodiment, after long-term use, the granular hot melt adhesive will block the filter holes on the screen plate, affecting the screening effect of the screen plate, resulting in an increase in the number of hot melt adhesive particles on the screen plate, thereby affecting the pre-cooling effect of the gas discharged from the air outlet on the hot melt adhesive particles on the screen plate.

[0038] See also Figures 5 to 13A movable plate 44 is provided on the top of the air intake bin 41, and a first elastic member 45 is connected between the bottom of the movable plate 44 and the inner wall of the air intake bin 41, a connecting rod 46 is provided on the inner side of the first elastic member 45, and a blocking member 47 is provided inside the exhaust bin 43, and both ends of the connecting rod 46 are fixedly connected to the blocking member 47 and the movable plate 44 respectively, the connecting rod 46 can move inside the guide pipe 42, and the blocking member 47 can block the connection between the guide pipe 42 and the exhaust bin 43, and moving the connecting rod 46 can adjust the distance between the blocking member 47 and the guide pipe 42, and can adjust the gas flow rate of the guide pipe 42 entering the exhaust bin 43.

[0039] like Figures 8 to 10 As shown, the outer walls of the air intake bin 41 and the exhaust bin 43 are fixedly connected to the inner wall of the mounting tube 32, the outer wall of the movable plate 44 is slidably connected to the inner wall of the mounting tube 32, the inner wall of the exhaust bin 43 is provided with a plurality of slide grooves 48, the inner wall of the mounting tube 32 is provided with limiting grooves 35 which are the same in number and corresponding in position to the slide grooves 48, the interior of each limiting groove 35 is slidably connected with a connecting piece 49 fixedly connected to the blocking piece 47, and each connecting piece 49 is slidably connected to the inner wall of the corresponding slide groove 48, the top of the sliding sleeve 51 is fixedly connected with an adjusting sleeve 54 slidably connected to the outer wall of the mounting tube 32, and each connecting piece 49 is fixedly connected to the inner wall of the adjusting sleeve 54 at one end away from the blocking piece 47.

[0040] like Fig.13 As shown, a vibration member 38 is fixedly connected to the bottom of the exhaust duct 36, a connecting sleeve 56 slidably connected to the outer wall of the vibration member 38 is fixedly connected to the bottom of the sliding sleeve 51, a plurality of receiving grooves 39 are provided inside the vibration member 38, a plurality of equidistantly distributed protrusions 310 are fixedly connected to the inside of each of the receiving grooves 39, and a limiting member 57 having the same number and corresponding positions as the receiving grooves 39 is fixedly connected to the inner side of the sliding sleeve 51, each limiting member 57 is slidably connected to the inner wall of the corresponding receiving groove 39, a chamber 58 is provided inside each limiting member 57, an extrusion member 59 is slidably connected to the inside of each chamber 58, a second elastic member 510 is connected between the side of each extrusion member 59 away from the vibration member 38 and the inner wall of the corresponding chamber 58, and moving the connecting sleeve 56 can make the extrusion member 59 intermittently contact the protrusion 310 inside the corresponding receiving groove 39, thereby generating vibration.

[0041] The limit groove 35 is used to limit the moving distance of the adjustment sleeve 54. The adjustment sleeve 54 and the connecting sleeve 56 are both slidably connected to the outer wall of the exhaust pipe 36. The inner wall of the sliding sleeve 51 is slidably connected to the outer walls of the vibration member 38 and the mounting tube 32. The purpose is to ensure that the adjustment sleeve 54 and the connecting sleeve 56 can move on the exhaust pipe 36, and the sliding sleeve 51 can move on the vibration member 38 and the mounting tube 32.

[0042] When the extrusion member 59 contacts the protrusion 310, the extrusion member 59 can move inside the corresponding chamber 58 in a direction away from the protrusion 310, and can squeeze the second elastic member 510 for compression. When the extrusion member 59 does not contact the protrusion 310, the second elastic member 510 elastically resets, and can make the extrusion member 59 quickly contact and collide with the inner wall of the accommodating groove 39, thereby generating vibration through intermittent contact between the extrusion member 59 and the protrusion 310.

[0043] like Fig.10 As shown, the diameter of the connecting rod 46 is smaller than the inner diameter of the guide tube 42, and there is a gap between the connecting rod 46 and the guide tube 42. The connecting rod 46 can further reduce the space of the guide tube 42, further increase the gas flow rate entering the guide tube 42, further reduce the gas pressure, and further cool the gas.

[0044] It should be noted that, under normal conditions, that is, when there are no hot melt adhesive particles on the sieve plate 52, the blocking member 47 can block the connection between the guide pipe 42 and the exhaust bin 43 under the action of the first elastic member 45. At this time, the connecting member 49 can contact the corresponding slide groove 48 and the top inner wall of the limiting groove 35, and the limiting member 57 can contact the top inner wall of the accommodating groove 39. During use, when the hot melt adhesive particles on the sieve plate 52 increase, the sieve plate 52 will move downward under the influence of gravity, and the sliding sleeve 51 can slide downward on the outer wall of the exhaust pipe 36, which can drive the adjusting sleeve 54 and the connecting sleeve 56 to move downward synchronously. During the downward movement of the adjusting sleeve 54, the blocking member 47 can be driven downward through the connecting member 49, and the movable plate 44 can be driven downward through the connecting rod 46, which can compress the first elastic member 45. An elastic member 45 can disengage the blocking member 47 from the connection between the guide tube 42 and the exhaust bin 43, and can adjust the gap between the blocking member 47 and the guide tube 42, and can adjust the gas flow rate from the guide tube 42 to the exhaust bin 43, thereby adjusting the amount of hot melt adhesive particles on the screening plate 52, and can automatically adjust the gas discharge amount of the cooling component 4 to prevent the hot melt adhesive particles on the screening plate 52 from increasing and affecting the pre-cooling effect. During the downward movement of the connecting sleeve 56, the extrusion member 59 can intermittently contact the protrusion 310 inside the corresponding receiving groove 39, and can generate vibration. The vibration is transmitted to the screening plate 52, which can cause the hot melt adhesive particles in the screening plate 52 to vibrate, and can effectively prevent the filter holes 53 of the screening plate 52 from being blocked, and can improve the screening effect of the screening plate 52.

[0045] When the adjusting sleeve 54 slides on the outer wall of the mounting tube 32 , the limiting groove 35 is always on the inner side of the adjusting sleeve 54 , so as to prevent the gas entering the exhaust chamber 43 from being discharged from the limiting groove 35 .

[0046] In summary, the present invention is provided with the adjusting sleeve 54 and the connecting sleeve 56. During use, when the hot melt adhesive particles on the sieve plate 52 increase, the sieve plate 52 will move downward, and the sliding sleeve 51 will drive the adjusting sleeve 54 and the connecting sleeve 56 to move downward synchronously. During the downward movement of the adjusting sleeve 54, the blocking member 47 can be separated from the blocking of the connection between the guide tube 42 and the exhaust bin 43, and the gap between the blocking member 47 and the guide tube 42 can be adjusted, so that the gas flow entering the exhaust bin 43 can be adjusted, thereby The amount of hot melt adhesive particles on the screening plate 52 can automatically adjust the gas discharge amount of the cooling component 4 to prevent the hot melt adhesive particles on the screening plate 52 from increasing and affecting the pre-cooling effect. During the downward movement of the connecting sleeve 56, the extrusion piece 59 can intermittently contact the protrusion 310 inside the corresponding receiving groove 39 to generate vibration, which is transmitted to the screening plate 52, causing the hot melt adhesive particles in the screening plate 52 to vibrate, effectively preventing the filter holes 53 of the screening plate 52 from being blocked, and improving the screening effect of the screening plate 52.

[0047] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. An air precooling system, comprising an air supply system (1) and a material discharge barrel (2), characterized in that: The discharge barrel (2) is provided with a drainage pipe (3), and a cooling component (4) is provided inside the drainage pipe (3). A screening component (5) is provided outside the drainage pipe (3). The cooling component (4) can cool the gas entering the drainage pipe (3), and the screening component (5) can screen the hot melt adhesive particles entering the discharge barrel (2). The cooling component (4) can adjust the cooling gas flow rate according to the weight of the hot melt adhesive particles on the screening component (5).

2. The air precooling system according to claim 1, characterized in that: The cooling component (4) comprises an air intake bin (41), the bottom of the air intake bin (41) is fixedly connected to a flow guide pipe (42), the bottom of the flow guide pipe (42) is fixedly connected to an exhaust bin (43), the diameter of the flow guide pipe (42) is smaller than the diameter of the air intake bin (41), when the gas inside the air intake bin (41) enters the flow guide pipe (42), the gas flow rate is increased, the pressure is reduced, and the gas temperature is reduced.

3. The air precooling system according to claim 2, characterized in that: A movable plate (44) is provided on the top of the air intake bin (41), a first elastic member (45) is connected between the bottom of the movable plate (44) and the inner wall of the air intake bin (41), a connecting rod (46) is provided on the inner side of the first elastic member (45), a blocking member (47) is provided inside the exhaust bin (43), two ends of the connecting rod (46) are respectively fixedly connected to the blocking member (47) and the movable plate (44), the connecting rod (46) can move inside the flow guide tube (42), the blocking member (47) can block the connection between the flow guide tube (42) and the exhaust bin (43), and the distance between the blocking member (47) and the flow guide tube (42) can be adjusted by moving the connecting rod (46), thereby adjusting the gas flow rate of the flow guide tube (42) entering the exhaust bin (43).

4. The air precooling system according to claim 3, characterized in that: The screening component (5) comprises a sliding sleeve (51), the outer wall of the sliding sleeve (51) being fixedly connected to a spirally arranged screening disc (52), the outer wall of the screening disc (52) being slidably connected to the inner wall of the discharge barrel (2), the screening disc (52) being provided with a plurality of filtering holes (53), the hot melt adhesive particles entering the discharge barrel (2) being able to move along a spiral trajectory on the screening disc (52), and being able to screen the hot melt adhesive particles through the filtering holes (53).

5. The air precooling system according to claim 4, characterized in that: The drainage pipe (3) comprises a feed pipe (31), the feed pipe (31) is arranged in an L shape, one end of which passes through the discharge barrel (2), and the other end is fixedly connected to the mounting pipe (32), the inside of the feed pipe (31) is provided with a discharge opening (33), the inside of the feed pipe (31) is fixedly connected with a filter screen (34) for preventing hot melt adhesive particles from entering the inside of the mounting pipe (32), and the hot melt adhesive particles entering the inside of the feed pipe (31) can fall onto the sieve plate (52) through the discharge opening (33).

6. The air precooling system according to claim 5, characterized in that: The outer walls of the air inlet bin (41) and the air exhaust bin (43) are fixedly connected to the inner wall of the mounting tube (32); the outer wall of the movable plate (44) is slidably connected to the inner wall of the mounting tube (32); the inner wall of the air exhaust bin (43) is provided with a plurality of slide grooves (48); the inner wall of the mounting tube (32) is provided with limiting grooves (35) the same number as the slide grooves (48) and corresponding in position; the interior of each limiting groove (35) is slidably connected to a connecting piece (49) fixedly connected to the blocking piece (47); and each connecting piece (49) is slidably connected to the inner wall of the corresponding slide groove (48); the top of the sliding sleeve (51) is fixedly connected to an adjusting sleeve (54) slidably connected to the outer wall of the mounting tube (32); and one end of each connecting piece (49) away from the blocking piece (47) is fixedly connected to the inner wall of the adjusting sleeve (54).

7. The air precooling system according to claim 6, characterized in that: The bottom of the mounting tube (32) is fixedly connected to an exhaust pipe (36), the outer wall of the exhaust pipe (36) is provided with a plurality of exhaust ports (37), the inner wall of the sliding sleeve (51) is slidably connected to the outer wall of the exhaust pipe (36), the outer wall of the sliding sleeve (51) is provided with a plurality of air outlet holes (55), and the gas entering the exhaust pipe (36) can pass through the exhaust ports (37) and the air outlet holes (55), so as to blow the hot melt adhesive particles on the sieve plate (52).

8. The air precooling system according to claim 7, characterized in that: The bottom of the exhaust pipe (36) is fixedly connected to a vibration member (38); the bottom of the sliding sleeve (51) is fixedly connected to a connecting sleeve (56) slidably connected to the outer wall of the vibration member (38); a plurality of receiving grooves (39) are provided inside the vibration member (38); a plurality of equidistantly distributed protrusions (310) are fixedly connected inside each of the receiving grooves (39); the inner side of the sliding sleeve (51) is fixedly connected to limiting members (57) of the same number and corresponding position as the containing grooves (39); each of the limiting members (57) is fixedly connected to the inner side of the sliding sleeve (51); 7) are slidably connected to the inner wall of the corresponding receiving groove (39), each of the limiting members (57) is provided with a chamber (58) inside, each of the chambers (58) is slidably connected to an extrusion member (59), and a second elastic member (510) is connected between a side of each extrusion member (59) away from the vibration member (38) and the inner wall of the corresponding chamber (58), and the movable connecting sleeve (56) can make the extrusion member (59) intermittently contact with the protrusion (310) inside the corresponding receiving groove (39), thereby generating vibration.

9. The air precooling system according to claim 8, characterized in that: The air supply system (1) comprises a fan (11), a feeding pipe (12) and a feeding port (13); the feeding pipe (12) is connected to one end of the feeding pipe (31) passing through the lower material barrel (2); hot melt adhesive particles entering the feeding pipe (12) through the feeding port (13) can be blown by the fan (11) to the interior of the lower material barrel (2).

10. Use of the air precooling system according to any one of claims 1 to 9 in precooling hot melt adhesive grinding powder.

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