Auxiliary device applied to replacement of hot melt adhesive filter screen

Abstract

The utility model provides an auxiliary device applied to replacement of a hot melt adhesive filter screen. The auxiliary device comprises a fixing rod, a connecting rod, a hook part, a tool sleeve and a handle. The connecting rod is vertically fixed at one end of the fixing rod, and the hook portion is provided with an arc-shaped hook fixed at the same end of the connecting rod. The tool sleeve is detachably fixed to the bottom of the connecting rod, and a tool groove embedded with the sealing cover fixing shaft is formed in the bottom of the tool sleeve. The handle is perpendicularly arranged at the other end of the fixing rod and used for assisting in rotating the tool sleeve. The tool groove and the fixing shaft are embedded, the tool sleeve is rotated through the handle, the sealing cover is made to rotate, and the fixing lug is disengaged from the clamping structure. The hook part can hook the fixing shaft, the sealing cover is easily taken down, and the filter screen bag is convenient to replace. The whole process is simple and fast, and the replacement efficiency and convenience are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of hot melt adhesive filter screens, in particular to an auxiliary device used for replacing hot melt adhesive filter screens. Background Art

[0002] In the hot melt adhesive production process, in order to ensure the fluidity of the adhesive in the delivery pipeline, additional measures are often taken to maintain the excellent condition of the hot melt adhesive, including but not limited to insulation and filtration.

[0003] Combine Figures 1-5 Specifically, hot melt adhesive filtration is typically accomplished using a specially designed filter tank, consisting primarily of a tank body, support legs, and a top cover. The top cover is flexibly mounted on the top of the tank body via supports, allowing for easy removal to open the tank. The top of the tank body is sealed and features multiple oil outlets and an oil inlet. These holes are connected to the thermal sleeve via oil inlet and outlet pipes, which, combined with the action of an oil pump, effectively circulate the hot melt adhesive.

[0004] To achieve effective filtration, each oil outlet is fitted with a removable filter basket, containing a filter bag. A ring-shaped cover installed at the outlet opening secures the basket and bag to the tank top. The cover features a fixed shaft inside and multiple external retaining ears. The tank body is equipped with a clamping structure around the outlet that matches the retaining ears. By rotating the shaft, the cover rotates, and the retaining ears engage the clamping structure, securing the cover to the tank. To ensure secure attachment, a tightening band is added between each retaining ear and its corresponding clamping structure.

[0005] When the hot melt adhesive flows from the oil inlet into the filter area and passes through each oil outlet, it will be filtered by the filter bag and the filter basket to effectively remove impurities. It will then continue to flow into the heat transfer sleeve through the oil outlet pipe, ensuring the quality of the hot melt adhesive and the smooth flow of the circulation system.

[0006] However, to maintain high-quality hot melt adhesive filtration, filter bags must be replaced regularly. Traditional replacement methods often rely on multiple tools, making the process cumbersome and inconvenient, increasing maintenance costs and workload. Therefore, developing a simpler and more efficient filter bag replacement solution is crucial.

[0007] In view of this, the inventor specially designed an auxiliary device for replacing hot melt adhesive filter screen, which resulted in this case. Utility Model Content

[0008] In order to solve the above problems, the technical solution of the present utility model is as follows:

[0009] An auxiliary device for replacing a hot melt adhesive filter, comprising a fixing rod, a connecting rod, a hook portion, a tool sleeve, and a handle, wherein:

[0010] The connecting rod is integrally and vertically fixed to one end of the fixing rod;

[0011] The hook portion has an arc-shaped hook and is integrally fixed to the same end of the connecting rod;

[0012] The tool sleeve is detachably fixed to the bottom of the connecting rod, and a tool groove is provided at the bottom of the tool sleeve to engage with the fixed shaft on the cover;

[0013] The handle is vertically arranged at the other end of the fixing rod and is used to assist the entire auxiliary device to rotate around the connection point between the tool slot and the cover fixing shaft.

[0014] Preferably, the arc-shaped opening of the hook portion is arranged in a direction away from the tool sleeve.

[0015] Preferably, the tool sleeve includes a disc-shaped connecting cover and a hollow cylindrical fixed cylinder wall fixed to the lower end surface of the connecting cover, and the tool groove is formed in an inward depression along the lower end surface of the fixed cylinder wall.

[0016] Preferably, there are at least 2n tool grooves, where n≥1 and is a positive integer, and every two tool grooves are symmetrically distributed along the radial direction of the circumference of the bottom surface of the fixed cylinder wall.

[0017] Preferably, there are four tool grooves, which are equally distributed around the bottom surface of the fixed cylinder wall.

[0018] Preferably, guide surfaces are symmetrically provided on the bottom surface of the fixed cylinder wall and located at the opening position of the tool groove, and the distance between the two guide surfaces located in the same tool groove gradually decreases in the direction approaching the connecting cover.

[0019] Preferably, a sharp portion is provided on the bottom surface of the fixed cylinder wall, and the sharp portion is continuously arranged around the circumference of the bottom of the fixed cylinder wall and is vacant at the position of the tool groove.

[0020] Preferably, a plug-in structure with a cross-shaped cross-section is protruding from the bottom of the connecting rod, and the bottom center of the plug-in structure continues to protrude along the axial direction of the connecting rod to form a plug-in end. The inner side of the plug-in end is provided with connecting screw holes distributed along its axial direction. The top center of the connecting cover is recessed inward to form a cross-shaped plug-in groove that is engaged with the plug-in structure, and the bottom center of the plug-in groove continues to be recessed inward to form a plug-in hole that is engaged with the plug-in end. The center of the bottom surface of the connecting top rod penetrates upward to form a locking hole corresponding to the position of the connecting screw hole.

[0021] Preferably, the fixing rod is sleeved with a heat insulation layer on the outer periphery, and the heat insulation layer is provided with a clearance opening extending to the axial edge at the position of the handle and the connecting rod.

[0022] Preferably, the handle comprises a fixed inner handle fixed integrally with the fixing rod, a movable sleeve sleeved on the outer periphery of the fixed inner handle, and a limiting and locking part for limiting the axial movement of the movable sleeve along the fixed inner handle.

[0023] The present application has the following beneficial effects:

[0024] The tool groove at the lower end of the tool sleeve is embedded with the fixing shaft of the cover, and then the handle and the fixing rod are used to rotate the tool sleeve around the connecting point of the tool groove and the fixing shaft, so that the cover is rotated, and the fixing lug is detached from the clamping structure of the oil outlet. In addition, the hook part can conveniently hook the fixing shaft, and the cover can be easily removed. In this way, the operator can directly take out the filter bag to be replaced from the filter basket of the tank body, and replace it. The whole process only needs simple mechanical action, greatly improving the efficiency and convenience of replacing the filter bag. BRIEF DESCRIPTION OF DRAWINGS

[0025] The accompanying drawings, which are included to provide a further understanding of the present application and constitute a part of this application, illustrate embodiments of the present application and together with the description serve to explain the application. In the drawings:

[0026] Wherein:

[0027] Figure 1 is a schematic diagram of the overall structure of the filter tank in the prior art;

[0028] Figure 2 is a schematic diagram of the top view structure of the tank body in the prior art;

[0029] Figure 3 is a schematic diagram of the local section view structure of the clamping structure in the prior art;

[0030] Figure 4 is a schematic diagram of the combined state of the filter basket and the filter bag in the prior art;

[0031] Figure 5 is a schematic diagram of the exploded state of the filter basket and the filter bag in the prior art;

[0032] Figure 6 is a schematic diagram of the overall structure of the present application;

[0033] Figure 7 is a schematic diagram of the local structure of the tool sleeve in the present application;

[0034] Figure 8This is a partial cross-sectional structural diagram highlighting the connecting rod and the connecting cover in the present invention;

[0035] Figure 9 It is a schematic diagram of a partial cross-sectional structure highlighting the heat insulation layer in the utility model.

[0036] Description of labels:

[0037] 10. Tank body; 11. Support foot; 12. Top cover; 13. Oil outlet hole; 14. Oil inlet hole; 15. Oil inlet pipe; 16. Oil outlet pipe; 17. Clamping structure; 20. Filter basket; 21. Filter bag; 211. Lifting belt; 30. Sealing cover; 31. Fixed shaft; 32. Fixed ear; 33. Fastening rolling belt; 40. Fixed rod; 50. Connecting rod; 51. Plug-in structure; 52. Plug-in end; 53. Connecting screw hole; 60. Hook part; 70. Tool sleeve; 71. Connecting cover; 711. Plug-in groove; 712. Plug-in hole; 713. Locking hole; 72. Fixed cylinder wall; 73. Tool groove; 74. Guide surface; 75. Sharp part; 80. Handle; 81. Fixed inner handle; 82. Movable sleeve; 83. Limit locking part; 90. Insulation layer; 91. Yield opening. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present invention more clear and understandable, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention.

[0039] Description of existing technology:

[0040] Combine Figures 1-5 Specifically, hot melt adhesive filtration is typically accomplished using a specially designed filter tank, which primarily consists of a tank body 10, support legs 11, and a top cover 12. The top cover 12 is flexibly mounted on the top of the tank body 10 via a bracket, allowing for easy removal to open the tank body 10. The top of the tank body 10 is sealed and features multiple oil outlet holes 13 and an oil inlet hole 14. These holes are connected to a heat-conducting sleeve via oil inlet and outlet pipes 15 and 16, which, combined with the action of an oil pump, effectively circulate the hot melt adhesive.

[0041] To achieve effective filtration, each oil outlet 13 is fitted with a removable filter basket 20, containing a filter bag 21. An annular cover 30, mounted at the opening of the oil outlet 13, secures the filter basket 20 and filter bag 21 to the top of the tank body 10. A radially fixed shaft 31 is secured within the cover 30, while a plurality of external retaining ears 32 are provided. A clamping structure 17, which mates with the retaining ears 32, is provided on the end surface of the tank body 10 surrounding the oil outlet 13. The retaining structure 17 is formed by welding an L-shaped metal piece to the end surface of the tank body 10, forming a semi-enclosed structure with one side open. Once the retaining ears 32 are inserted through the open side, they are trapped within the semi-enclosed structure, unable to move vertically and only able to be rotated outward from their original direction of entry. By rotating the retaining shaft 31, the cover 30 rotates, and the retaining ears 32 engage with the clamping structure 17, thus securely connecting the cover 30 to the tank body 10.

[0042] In addition, in order to enhance the reliability of fixation, a fastening rolled band 33 is added between each fixing ear 32 and its corresponding clamping structure 17 for reinforcement, so that the cover 30 is completely confined in the semi-closed structure formed by the clamping structure 17. Before the fastening rolled band 33 is unfastened, it cannot be rotated out from the original entry direction, thereby maintaining its stability during the filtration process.

[0043] When the hot melt adhesive flows from the oil inlet hole 14 into the filter area and passes through each oil outlet hole 13, it will be filtered by the filter bag 21 and the filter basket 20 to effectively remove impurities therein, and then continue to flow into the heat transfer sleeve through the oil outlet pipe 16, ensuring the quality of the hot melt adhesive and the unobstructed circulation system.

[0044] In addition, the top of the filter bag 21 is also designed with a frame for shaping and a pulling belt 211 fixed between two sides of the frame.

[0045] The following is a description of the main body of the utility model: Example 1

[0046] See also Figures 1 to 9 , which is an auxiliary device for replacing a hot melt adhesive filter as the best embodiment of the present utility model, includes a fixing rod 40, a connecting rod 50, a hook portion 60, a tool sleeve 70 and a handle 80, wherein:

[0047] The fixing rod 40 is a round metal rod;

[0048] The connecting rod 50 is in the shape of a round rod and is integrally and vertically welded to one end of the fixing rod 40;

[0049] The hook portion 60 comprises an arc-shaped hook and is integrally fixed to the same end of the connecting rod 50. In this embodiment, the arc-shaped hook is welded to the end of the connecting rod 50 and is on the same side as the connecting rod 50. The opening of the arc-shaped portion of the hook portion 60 faces away from the connecting rod 50, thereby forming a distribution in the opposite direction to the connecting rod 50.

[0050] The tool sleeve 70 is detachably fixed to the bottom of the connecting rod 50 , and a tool groove 73 is formed at the bottom of the tool sleeve 70 to engage with the fixed shaft 31 on the cover 30 ;

[0051] The handle 80 is vertically provided at the other end of the fixing rod 40 , and is used to assist the entire auxiliary device in rotating around the connection point between the tool slot 73 and the fixing shaft 31 of the cover 30 .

[0052] Preferably, Figure 6 、 7 As shown, the tool sleeve 70 includes a connecting cover 71 in the form of a disc and a fixed cylinder wall 72 fixed to the lower end surface of the connecting cover 71 and in the form of a hollow cylinder. The tool groove 73 is formed inwardly along the lower end surface of the fixed cylinder wall 72. Therefore, the above structure can ensure the precise docking of the tool sleeve 70 and the fixed shaft 31 of the cover 30, while providing sufficient space to accommodate the fixed shaft 31, thereby enhancing the stability of the connection.

[0053] Preferably, Figure 6 、 7 As shown, there are at least 2n tool grooves 73, where n≥1 and is a positive integer. Every two tool grooves 73 are symmetrically distributed along the radial direction of the circumference of the bottom surface of the fixed cylinder wall 72. Specifically, there are 4 tool grooves 73, which are equally distributed around the circumference of the bottom surface of the fixed cylinder wall 72.

[0054] Therefore, the design of multiple tool slots 73 allows the operator to select the tool slot 73 at the corresponding position for connection according to his or her own posture without having to turn sideways, thus avoiding the situation where it is inconvenient to turn in a small space or at a high place. At the same time, the layout of the tool slots 73 divided into four equal parts not only provides a uniform force distribution, but also simplifies the positioning process, making the operation more intuitive and simple.

[0055] Preferably, Figure 6 、 7 As shown, guide surfaces 74 are symmetrically provided on the bottom surface of the fixed cylinder wall 72 and at the opening position of the tool groove 73. The distance between the two guide surfaces 74 located in the same tool groove 73 gradually decreases as they approach the connecting cover 71. The guide surfaces 74 help the tool sleeve 70 to be smoothly inserted into the fixed shaft 31 on the cover 30, reducing the difficulty of operation and speeding up the docking speed.

[0056] Preferably, Figure 6 、 7As shown, a sharp portion 75 is provided on the bottom surface of the fixed cylinder wall 72. The sharp portion 75 is continuously arranged around the circumference of the bottom of the fixed cylinder wall 72 and is vacant at the position of the tool groove 73. In this embodiment, the sharp portion 75 is a sharp structure formed by grinding and sharpening the bottom of the fixed cylinder wall 72. Therefore, the setting of the sharp portion 75 can facilitate the operator to cut the fastening rolled band 33 between the fixed ear 32 and the clamping structure 17 without the need for additional cutting tools, thereby maximizing the time saved in replacing the filter bag 21.

[0057] Preferably, Figure 7 、 8 As shown, a plug-in structure 51 with a cross-shaped cross-section is protruded from the bottom of the connecting rod 50, and the bottom center of the plug-in structure 51 continues to protrude along the axial direction of the connecting rod 50 to form a plug-in end 52. The inner side of the plug-in end 52 is provided with a connecting screw hole 53 distributed along its axial direction. The top center of the connecting cover 71 is recessed inward to form a cross-shaped plug-in groove 711 that is engaged with the plug-in structure 51, and the bottom center of the plug-in groove 711 continues to be recessed inward to form a plug-in hole 712 that is engaged with the plug-in end 52. The bottom center of the connecting cover 71 penetrates upward to form a locking hole 713 that is opposite to the position of the connecting screw hole 53.

[0058] Thus, through the cross-shaped plug-in structure 51 and the plug-in groove 711, the relative rotation of the connecting rod 50 and the tool sleeve 70 can be limited, so that the auxiliary device remains stable when the fixed shaft 31 of the cover 30 is rotated, thereby facilitating the opening of the cover 30. In addition, through the plug-in end 52, the plug-in hole 712 and the locking hole 713, the locking fixation between the connecting rod 50 and the connecting cover 71 can be facilitated by the locking bolt, so that after the tool sleeve 70 has been used for a period of time, it can be replaced without replacing the entire device, thereby reducing costs.

[0059] Preferably, Figure 6 、 9 As shown, a heat-insulating layer 90 is provided on the outer peripheral side of the fixing rod 40, and a clearance opening 91 extending to the axial edge thereof is provided at both ends of the heat-insulating layer 90 at the positions of the handle 80 and the connecting rod 50 respectively. The heat-insulating layer 90 protects the operator's hands from high temperatures, thereby improving the safety and comfort of operation. At the same time, the design of the clearance opening 91 does not affect the functions of other components.

[0060] Preferably, Figure 6As shown, the handle 80 includes a fixed inner handle 81 (indicated by the dotted line in the figure) fixed integrally with the fixed rod 40, a movable sleeve 82 movably sleeved on the outer peripheral side of the fixed inner handle 81, and a limit locking portion 83 for limiting the axial movement of the movable sleeve 82 along the fixed inner handle 81. The design of the handle 80 provides a better grip. The movable sleeve 82 can achieve smooth rotation with the fixed inner handle 81, thereby improving the comfort of operation and adjusting the position according to the needs of the operator. The limit locking portion 83 ensures the stability of the handle 80 during operation and improves the efficiency of operation.

[0061] In this embodiment, the limiting locking portion 83 is a locking bolt, and the nut portion thereof is larger than the inner diameter of the movable sleeve 82 to limit its upward and downward movement.

[0062] In this embodiment, the hook portion 60 can also hook the lifting belt 211 to facilitate lifting the filter bag 21 .

[0063] The beneficial effects of the utility model are as follows:

[0064] In this utility model, the tool slot 73 at the lower end of the tool sleeve 70 engages with the fixed shaft 31 of the cover 30. The tool sleeve 70 is then rotated about the connection point between the tool slot 73 and the fixed shaft 31 using the handle 80 and the fixing rod 40, thereby rotating the cover 30 and disengaging the fixing lug 32 from the oil outlet's clamping structure 17. Furthermore, the hook portion 60 conveniently hooks onto the fixed shaft 31, making it easy to remove the cover 30. This allows the operator to directly remove the filter bag 21 to be replaced from the filter basket 20 of the tank body 10 and replace it. The entire process requires only simple mechanical movements, greatly improving the efficiency and convenience of replacing the filter bag 21.

[0065] The above is an exemplary description of the present invention in conjunction with the accompanying drawings. It is obvious that the specific implementation of the present invention is not limited to the above-mentioned method. As long as various non-substantial improvements are made using the method concept and technical solution of the present invention, or the concept and technical solution of the present invention are directly applied to other occasions without improvement, they are all within the scope of protection of the present invention.

Claims

1. An auxiliary device for replacing a hot melt adhesive filter, characterized in that: It comprises a fixing rod (40), a connecting rod (50), a hook portion (60), a tool sleeve (70) and a handle (80), wherein: The connecting rod (50) is integrally and vertically fixed to one end of the fixing rod (40); The hook portion (60) has an arc-shaped hook and is integrally fixed to the same end of the connecting rod (50); The tool sleeve (70) is detachably fixed to the bottom of the connecting rod (50), and a tool groove (73) is provided at the bottom of the tool sleeve (70) for engaging with the fixed shaft (31) on the cover (30); The handle (80) is vertically arranged at the other end of the fixing rod (40) and is used to assist the entire auxiliary device in rotating around the connection point between the tool slot (73) and the fixing shaft (31) of the cover (30).

2. The auxiliary device for replacing a hot melt adhesive filter according to claim 1, characterized in that: The arc-shaped opening of the hook portion (60) is arranged in a direction away from the tool sleeve (70).

3. The auxiliary device for replacing a hot melt adhesive filter according to claim 1, characterized in that: The tool sleeve (70) comprises a disc-shaped connecting cover (71) and a hollow cylindrical fixed cylinder wall (72) fixed to the lower end surface of the connecting cover (71), and the tool groove (73) is formed inwardly concave along the lower end surface of the fixed cylinder wall (72).

4. The auxiliary device for replacing a hot melt adhesive filter according to claim 3, characterized in that: At least 2n tool grooves (73) are provided, where n≥1 and is a positive integer, and every two tool grooves (73) are symmetrically distributed along the radial direction of the circumference of the bottom surface of the fixed cylinder wall (72).

5. The auxiliary device for replacing a hot melt adhesive filter according to claim 4, characterized in that: There are four tool slots (73) which are equally distributed around the bottom surface of the fixed cylinder wall (72).

6. The auxiliary device for replacing a hot melt adhesive filter according to claim 3, characterized in that: Guide surfaces (74) are symmetrically provided on the bottom surface of the fixed cylinder wall (72) and at the opening position of the tool groove (73). The distance between the two guide surfaces (74) located in the same tool groove (73) gradually decreases in the direction approaching the connection cover (71).

7. The auxiliary device for replacing a hot melt adhesive filter according to claim 3, characterized in that: The bottom surface of the fixed cylinder wall (72) is provided with a sharp portion (75), and the sharp portion (75) is continuously arranged around the circumference of the bottom of the fixed cylinder wall (72) and is vacant at the position of the tool groove (73).

8. The auxiliary device for replacing a hot melt adhesive filter according to claim 3, characterized in that: A plug-in structure (51) with a cross-shaped cross section is protruded from the bottom of the connecting rod (50), and the center of the bottom of the plug-in structure (51) continues to protrude along the axial direction of the connecting rod (50) to form a plug-in end (52), and the inner side of the plug-in end (52) is provided with a connecting screw hole (53) distributed along its axial direction. The top center of the connecting cover (71) is recessed inward to form a cross-shaped plug-in groove (711) that is engaged with the plug-in structure (51), and the bottom center of the plug-in groove (711) continues to be recessed inward to form a plug-in hole (712) that is engaged with the plug-in end (52), and the center of the bottom surface of the connecting cover (71) is penetrated upward to form a locking hole (713) that is opposite to the position of the connecting screw hole (53).

9. The auxiliary device for replacing a hot melt adhesive filter according to claim 1, characterized in that: The outer circumference of the fixing rod (40) is sheathed with a heat insulating layer (90), and both ends of the heat insulating layer (90) are respectively penetrated at the positions of the handle (80) and the connecting rod (50) to form a clearance opening (91) extending to the axial edge thereof.

10. The auxiliary device for replacing a hot melt adhesive filter according to claim 1, characterized in that: The handle (80) comprises a fixed inner handle (81) fixed integrally with the fixed rod (40), a movable sleeve (82) movably sleeved on the outer peripheral side of the fixed inner handle (81), and a limiting locking portion (83) for limiting the axial movement of the movable sleeve (82) along the fixed inner handle (81).

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