Adsorption air dryer for powder spray production

Abstract

The utility model discloses a kind of adsorption type air drying machine for powder spraying production, it is related to suction dryer technical field, the utility model includes support, first adsorption tower and second adsorption tower, first adsorption tower and second adsorption tower bottom side are all penetrated with discharge bolt, and discharge bolt outer circle is equipped with inlay groove, and inlay groove outer circle is connected with sealing ring;Discharge bolt top is connected with hook rod by mounting plate, and hook rod one side upper portion is equipped with resistance groove, and fastening bolt is connected between mounting plate and discharge bolt.The utility model is through the setting of hook rod and resistance groove, two longitudinal section is 7-shaped hook rod and is formed T-shaped structure, its width is much greater than discharge bolt diameter, can firmly hook the discharge port of first adsorption tower or second adsorption tower, avoid discharge bolt from accidentally falling in the process of disassembly;Effectively prevent the loss of discharge bolt and improve the security and convenience of discharge port dredging.

Description

Technical Field

[0001] This utility model relates to the field of desiccant technology, specifically to an adsorption-type air dryer for powder coating production. Background Technology

[0002] Powder coating is a surface treatment technology that uses electrostatic adsorption to uniformly adhere powdered coating to the surface of a workpiece, and then bakes it at high temperature to melt and solidify the powder to form a continuous coating. It features strong coating adhesion, excellent corrosion resistance, and good environmental performance, and is widely used for surface decoration and protection of metal components, appliance casings, and other products.

[0003] Adsorption air dryers are key auxiliary equipment in powder coating production lines. During powder coating, compressed air serves as the power source for transporting the powder coating. If the compressed air contains moisture, it can cause powder coating agglomeration, bubbles, pinholes, and other defects during spraying, severely affecting coating quality. Adsorption air dryers use internal adsorbents such as molecular sieves and alumina to adsorb moisture from the compressed air, ensuring the output compressed air reaches a low dew point dry state. This provides a stable source of dry air for powder coating, guaranteeing the continuity of the spraying process and the uniformity of the coating.

[0004] Existing adsorption air dryers used in powder coating production require periodic replacement after prolonged use due to aging, pulverization, and oil molecule contamination of the molecular sieves and alumina. Replacement mainly involves removing the discharge bolt to open the discharge port, allowing gravity to expel the molecular sieves and alumina from the adsorption tower. After discharge, the discharge bolt is reinstalled and the feed bolt is removed to open the feed port. New molecular sieves and alumina are then loaded into the adsorption tower via pneumatic conveying or funnel filling. However, after removing the discharge bolt, the discharge bolt and its surface sealing ring lack restraint and are prone to rolling away on the ground or causing the sealing ring to fall off and be lost. Utility Model Content

[0005] Therefore, the purpose of this utility model is to provide an adsorption-type air dryer for powder coating production, so as to solve the technical problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution: an adsorption-type air dryer for powder coating production, comprising a support frame, a first adsorption tower, and a second adsorption tower. A discharge bolt is passed through one side of the bottom of both the first and second adsorption towers, and an inner groove is formed on the outer ring of the discharge bolt, with a sealing ring connected to the outer ring of the inner groove. A hook rod is connected to the top of the discharge bolt via a mounting plate, and a notch is formed on one side of the hook rod. A fastening bolt connects the mounting plate to the discharge bolt.

[0007] By adopting the above technical solution, a core structure is constructed to prevent the loss of discharge bolts and sealing rings and to facilitate the unblocking of the discharge port. The cooperation between the embedded groove and the sealing ring prevents the sealing ring from falling off. The hook rod connected by the mounting plate and fastening bolts cooperates with the groove to prevent the discharge bolt from being lost. At the same time, the hook rod can assist in unblocking, solving the problems of easy loss of parts and inconvenience of unblocking in the existing technology.

[0008] Furthermore, the inner diameter of the sealing ring is smaller than the diameter of the discharge bolt, and the inner ring of the sealing ring is adapted to the inner groove.

[0009] By adopting the above technical solution, the sealing ring can be tightly nested in the inner groove. When the discharging bolt is removed to discharge the adsorbent, it is not easy to fall out of the inner groove due to material impact or operational shaking, thus ensuring the stability of the sealing ring and guaranteeing the sealing performance of subsequent assembly.

[0010] Furthermore, the mounting plate is detachably connected to the discharge bolt via fastening bolts.

[0011] By adopting the above technical solution, a detachable connection between the hook rod and the discharge bolt is achieved, which not only ensures the structural stability of the hook rod during operation, but also facilitates disassembly and replacement when the hook rod is worn or damaged, thus improving maintenance convenience.

[0012] Furthermore, the longitudinal section of the hook is shaped like the number "7".

[0013] By adopting the above technical solution, a foundation is provided for the two hooks to fit together to form a T-shaped structure, so that the combined width can be much larger than the diameter of the discharge bolt, thereby firmly hooking the discharge port of the adsorption tower and effectively preventing the discharge bolt from falling off or being lost.

[0014] Furthermore, the width of the top of the hook is smaller than the diameter of the discharge bolt.

[0015] By adopting the above technical solution, it is ensured that the hook can be removed separately from the discharge port when it is replaced, avoiding obstruction of the replacement operation due to its excessive size, simplifying the maintenance process and reducing the difficulty of operation.

[0016] Furthermore, there are two of each of the mounting plate, hook rod, and abutment groove, and the two hook rods and abutment grooves are diagonally mirrored, and the two mounting plates are mirrored.

[0017] By adopting the above technical solution, the two hooks can be symmetrically fitted to form a stable T-shaped structure, ensuring balanced force, improving the stability of the anti-fall-off effect, and ensuring the reliability of the hooks during operation.

[0018] Furthermore, one side of one of the hooks abuts against the groove on the side of the other hook.

[0019] By adopting the above technical solution, the hook rod is limited by the groove. Even if the hook rod is bent by force, it will move away from each other to increase the combined width. The width is still greater than the diameter of the discharge bolt, which further enhances the anti-drop effect and avoids the discharge bolt from falling off accidentally.

[0020] Furthermore, the first adsorption tower and the second adsorption tower are respectively installed on the inner sides of the support, and a control cabinet, a moisture inlet component and a dry air outlet component are respectively provided between the first adsorption tower and the second adsorption tower. A regeneration gas inlet component is connected between the dry air outlet component and the first adsorption tower and the second adsorption tower. A regeneration gas discharge component is provided on the back of the moisture inlet component. Feed bolts are connected to the top of one side of both the first adsorption tower and the second adsorption tower.

[0021] By adopting the above technical solutions, a complete equipment operation and maintenance system is formed. The control cabinet regulates the air path to achieve alternating operation of the two towers. Components such as wet air intake and dry air exhaust ensure the output of dry air. The feed bolt facilitates the replenishment of new adsorbent, ensuring continuous and stable operation of the equipment.

[0022] Furthermore, the mounting plate, fastening bolts, and hook rod are all made of 316L stainless steel.

[0023] By adopting the above technical solution, the excellent corrosion resistance and mechanical strength of 316L stainless steel can be utilized to adapt to the humid environment that may exist inside the adsorption tower, reduce the failure of components due to rust or wear, extend the service life of structures such as hook rods and mounting plates, and ensure their long-term stable function.

[0024] Furthermore, the fastening bolt is externally fitted with a toothed anti-loosening washer or a double-layered self-locking washer.

[0025] By adopting the above technical solution, and by utilizing the anti-loosening properties of the gasket, the fastening bolts are prevented from loosening during long-term vibration or frequent operation of the equipment, ensuring the stability of the connection between the mounting plate and the discharge bolt, and ensuring the reliable performance of the anti-loosening and unblocking functions.

[0026] In summary, the present invention has the following main advantages:

[0027] 1. This utility model, through the design of hook rods and abutment grooves, forms a T-shaped structure by fitting two hook rods with a "7"-shaped longitudinal section together. The width of this structure is much larger than the diameter of the discharge bolt, allowing it to securely hook the discharge port of the first or second adsorption tower, preventing the discharge bolt from accidentally falling off during disassembly. Simultaneously, the abutment groove limits the hook rods when they are fitted together; even if the hook rods bend due to a large torque, the two hook rods are simply moved horizontally away to increase the combined width, which remains greater than the diameter of the discharge bolt, preventing detachment. Furthermore, when blockages occur at the molecular sieve and alumina discharge points, the hook rods can be moved by pushing, pulling, or rotating the discharge bolt to directly clear the discharge port without the need for hammers or other tools to strike the outer wall of the adsorption tower, reducing the risk of equipment damage and operational safety hazards. This effectively prevents the loss of the discharge bolt and improves the safety and convenience of clearing the discharge port.

[0028] 2. This utility model, through the setting of an mounting plate and fastening bolts, has the hook rod welded to the top of the mounting plate. The mounting plate is detachably connected to the discharge bolt via the fastening bolts, which ensures the structural stability of the hook rod during operation and facilitates replacement when the hook rod is worn or damaged. Since the top width of a single hook rod is smaller than the diameter of the discharge bolt, replacement only requires disassembling the fastening bolts to separate the mounting plate from the discharge bolt, allowing the two hook rods to be separated and removed individually. This simplifies the maintenance process, reduces operational difficulty, and saves maintenance time. It achieves a stable connection and convenient disassembly / reassembly between the hook rod and the discharge bolt, providing convenience for hook rod replacement.

[0029] 3. This utility model, through the setting of an embedded groove and a sealing ring, with the embedded groove located on the outer ring of the discharge bolt and the inner ring of the sealing ring adapted to the embedded groove and its inner diameter smaller than the diameter of the discharge bolt, allows the sealing ring to be stably nested outside the discharge bolt. This prevents it from easily falling off due to material impact or operational shaking during the discharge of molecular sieve and alumina, reducing the risk of part loss and avoiding problems such as poor equipment sealing and increased additional procurement costs caused by lost sealing rings. It ensures the sealing performance and stability of subsequent equipment assembly; effectively reduces the loss or detachment of sealing rings during maintenance, guaranteeing the sealing performance of the equipment. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of this utility model;

[0031] Figure 2 This is a schematic diagram of the back structure of this utility model;

[0032] Figure 3 This is a schematic diagram of the discharge bolt structure of this utility model;

[0033] Figure 4 This is a schematic diagram of the cross-sectional structure of the discharge bolt of this utility model;

[0034] Figure 5 This is a schematic diagram of the exploded structure of the discharge bolt of this utility model.

[0035] In the diagram: 1. Support frame; 2. First adsorption tower; 3. Second adsorption tower; 4. Control cabinet; 5. Moist gas inlet assembly; 6. Regenerated gas discharge assembly; 7. Dry air outlet assembly; 8. Regenerated gas inlet assembly; 9. Feed bolt; 10. Discharge bolt; 11. Embedded groove; 12. Sealing ring; 13. Mounting plate; 14. Fastening bolt; 15. Hook rod; 16. Abutment groove. Detailed Implementation

[0036] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0037] The embodiments of this utility model will be described below based on its overall structure.

[0038] Example 1:

[0039] An adsorption-type air dryer for powder coating production, such as Figures 1-5 As shown, the system includes a support 1, a first adsorption tower 2, and a second adsorption tower 3. Both the first adsorption tower 2 and the second adsorption tower 3 have discharge bolts 10 penetrating one side of their bottoms. The outer ring of the discharge bolt 10 has an inner groove 11, and the outer ring of the inner groove 11 is connected to a sealing ring 12. The inner diameter of the sealing ring 12 is smaller than the diameter of the discharge bolt 10. The inner ring of the sealing ring 12 is adapted to the inner groove 11. When the discharge bolt 10 is disassembled, the inner groove 11 of the outer ring of the discharge bolt 10 stably nests the sealing ring 12, reducing the chance of the sealing ring 12 falling off during material impact or operation, and ensuring the sealing performance of subsequent assembly.

[0040] The top of the discharge bolt 10 is connected to a hook rod 15 via a mounting plate 13. The hook rod 15 has a "7"-shaped longitudinal section, and the width of the top of the hook rod 15 is smaller than the diameter of the discharge bolt 10. A groove 16 is provided on the upper side of one hook rod 15, and the upper side of one hook rod 15 abuts against the groove 16 on the side of the other hook rod 15. There are two mounting plates 13, two hook rods 15, and two grooves 16. The two hook rods 15 and the grooves 16 are diagonally mirrored. The two mounting plates 13 are mirrored. A fastening bolt 14 connects the mounting plate 13 to the discharge bolt 10. The mounting plate 13 is detachably connected to the discharge bolt 10 via the fastening bolt 14. The two 7-shaped hooks 15 at the top of the device fit together to form a T-shaped structure. Because their width is much larger than the diameter of the discharge bolt 10, they hook onto the discharge port of the first adsorption tower 2 or the second adsorption tower 3 to prevent the discharge bolt 10 from falling off accidentally. The discharge port is formed after the discharge bolt 10 is removed. At the same time, when the two hooks 15 are fitted together, they are limited by the groove 16. Even if the hooks 15 are subjected to a large torque and bend, it will only cause the two hooks 15 to move away from each other horizontally to increase the combined width. The width is still greater than the diameter of the discharge bolt 10 to prevent them from falling off. If the discharge port is blocked, the staff can push, pull or rotate the discharge bolt 10 to move the hooks 15 and directly clear the blockage without knocking on the outer wall, thus improving operational safety.

[0041] See Figure 1 and Figure 2 In the above embodiment, the first adsorption tower 2 and the second adsorption tower 3 are respectively installed on the inside sides of the bracket 1. A control cabinet 4, a moisture inlet component 5 and a dry air outlet component 7 are respectively arranged between the first adsorption tower 2 and the second adsorption tower 3. A regeneration gas inlet component 8 is connected between the dry air outlet component 7 and the first adsorption tower 2 and the second adsorption tower 3. A regeneration gas discharge component 6 is arranged on the back of the moisture inlet component 5. Feed bolts 9 are connected to the top of one side of the first adsorption tower 2 and the second adsorption tower 3.

[0042] Example 2:

[0043] Based on the above embodiment one, in order to improve the corrosion resistance and strength of the components, the following settings are now adopted.

[0044] See Figures 3-5In the above embodiments, the mounting plate 13, fastening bolts 14, and hook rod 15 are all made of 316L stainless steel. Utilizing its excellent corrosion resistance and mechanical strength, it adapts to the moisture that may exist inside the first adsorption tower 2 and the second adsorption tower 3, reducing component failures due to rust or wear, extending the service life of structures such as the hook rod 15, and ensuring long-term stable performance of its anti-fall-off and unblocking functions. Compressed air containing moisture enters the equipment through the moisture inlet assembly 5, and after being distributed by the control cabinet 4, it preferentially enters the first adsorption tower 2 or the second adsorption tower 3. Inside the adsorption tower, the moisture in the compressed air is adsorbed by the molecular sieves, alumina, and other adsorbents, transforming it into low-dew-point dry air, thus drying the air. The air is then output through the dry air outlet assembly 7 to provide a dry air source for the powder coating production line, ensuring the delivery and adhesion quality of the powder coating. Next, to achieve continuous operation, the equipment adopts a dual-tower alternating working mode: when the adsorbent in the first adsorption tower 2 is close to saturation, the control cabinet 4 switches the air path, allowing the moisture to enter the second adsorption tower 3 for adsorption. At the same time, the first adsorption tower 2 introduces some dry air through the regeneration air inlet assembly 8 to purge and regenerate the saturated adsorbent, and the adsorbed moisture is discharged through the regeneration air outlet assembly 6. After the first adsorption tower 2 has completed regeneration, if the adsorbent in the second adsorption tower 3 is saturated, the system switches to adsorption in the first adsorption tower 2 and regeneration in the second adsorption tower 3, thus ensuring a continuous output of dry air.

[0045] Example 3:

[0046] Based on the above embodiment 1, in order to reduce the loosening of the fastening bolt 14, the following settings are now adopted.

[0047] See Figures 3-5 In the above embodiments, a toothed anti-loosening washer or a double-layered self-locking washer is fitted on the outside of the fastening bolt 14. By fitting the toothed anti-loosening washer or the double-layered self-locking washer on the outside of the fastening bolt 14, the anti-loosening characteristics of the washer are utilized to reduce the loosening of the fastening bolt 14 during long-term vibration or frequent operation of the equipment, ensuring the stability of the connection between the mounting plate 13 and the discharge bolt 10, further improving the reliability of the overall structure of the equipment, and ensuring the smoothness of the maintenance and operation process.

[0048] The implementation principle of this utility model is as follows: First, the specific principle of the desiccant is a technical solution well known to those skilled in the art, therefore its structure and principle are not described in detail.

[0049] During routine maintenance, staff first remove the discharged bolt 10 to discharge the exhausted adsorbent, then remove the feed bolt 9 to fill the adsorption tower with new adsorbent. Simultaneously, the inner groove 11 of the outer ring of the discharged bolt 10 stably nests the sealing ring 12, reducing the risk of the sealing ring 12 falling off due to material impact or operation, ensuring the sealing performance of subsequent assembly. At the same time, the mounting plate 13 is connected to the discharged bolt 10 via fastening bolts 14, and its two L7-shaped hooks 15 at the top form a T-shaped structure. Because its width is much larger than the diameter of the discharged bolt 10, it hooks the first… The discharge port of adsorption tower 2 or the second adsorption tower 3 is designed to prevent the discharge bolt 10 from accidentally falling off. The discharge port is formed after the discharge bolt 10 is removed. At the same time, when the two hook rods 15 are in contact, they are limited by the groove 16. Even if the hook rods 15 are subjected to a large torque and bend, it will only cause the two hook rods 15 to move away from each other in the horizontal direction to increase the combined width. The width is still greater than the diameter of the discharge bolt 10 to prevent them from falling off. If the discharge port is blocked, the staff can push, pull or rotate the discharge bolt 10 to move the hook rods 15 and directly clear the blockage without knocking on the outer wall, thus improving the safety of operation.

[0050] In addition, the mounting plate 13, fastening bolts 14 and hook rod 15 are made of 316L stainless steel. Utilizing its excellent corrosion resistance and mechanical strength, it can adapt to the moisture that may exist in the first adsorption tower 2 and the second adsorption tower 3, reduce the failure of components due to rust or wear, extend the service life of structures such as hook rod 15, and ensure long-term stable performance of the anti-fall-off and unblocking functions.

[0051] The hook rod 15 is welded to the top of the mounting plate 13. The mounting plate 13 is detachably connected to the discharge bolt 10 via fastening bolts 14, ensuring the structural stability of the hook rod 15 during operation and facilitating replacement when the hook rod 15 is worn or damaged. Since the top width of a single hook rod 15 is smaller than the diameter of the discharge bolt 10, replacement only requires disassembling the fastening bolts 14 to separate the mounting plate 13 from the discharge bolt 10, allowing the two hook rods 15 to be separated and removed individually. This simplifies the maintenance process, reduces operational difficulty, and saves maintenance time. Installation... The operation process is the opposite. Simply put, first, insert the two hook rods 15 into the first adsorption tower 2 or the second adsorption tower 3 through the discharge port. Then, install the mounting plate 13 on the end of the discharge bolt 10 through the fastening bolt 14. A toothed anti-loosening washer or a double-layered self-locking washer is fitted on the outside of the fastening bolt 14. By utilizing the anti-loosening characteristics of the washer, the fastening bolt 14 is reduced from loosening during long-term vibration or frequent operation of the equipment. This ensures the stability of the connection between the mounting plate 13 and the discharge bolt 10, further improves the reliability of the overall structure of the equipment, and ensures smooth maintenance and operation.

[0052] Although embodiments of the present invention have been shown and described, these specific embodiments are merely explanations of the present invention and are not intended to limit the invention. The specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. After reading this specification, those skilled in the art may make modifications, substitutions, and variations to the embodiments as needed without departing from the principles and spirit of the present invention, provided that such modifications, substitutions, and variations are within the scope of the claims of the present invention and are protected by patent law.

Claims

1. An adsorption-type air dryer for powder coating production, comprising a support frame (1), a first adsorption tower (2), and a second adsorption tower (3), characterized in that: The first adsorption tower (2) and the second adsorption tower (3) are both connected by a discharge bolt (10) on one side of their bottoms. The discharge bolt (10) has an inner groove (11) on its outer ring and a sealing ring (12) on its outer ring. The top of the discharge bolt (10) is connected to a hook rod (15) via a mounting plate (13). A notch (16) is provided on one side of the hook rod (15). A fastening bolt (14) is connected between the mounting plate (13) and the discharge bolt (10).

2. The adsorption-type air dryer for powder coating production according to claim 1, characterized in that: The inner diameter of the sealing ring (12) is smaller than the diameter of the discharge bolt (10), and the inner ring of the sealing ring (12) is adapted to the inner groove (11).

3. The adsorption-type air dryer for powder coating production according to claim 1, characterized in that: The mounting plate (13) is detached and connected to the discharge bolt (10) by fastening bolts (14).

4. The adsorption-type air dryer for powder coating production according to claim 1, characterized in that: The longitudinal section of the hook rod (15) is shaped like the number "7".

5. The adsorption-type air dryer for powder coating production according to claim 4, characterized in that: The width of the top of the hook (15) is smaller than the diameter of the discharge bolt (10).

6. The adsorption-type air dryer for powder coating production according to claim 5, characterized in that: Two mounting plates (13), two hooks (15) and two grooves (16) are provided, and the two hooks (15) and two grooves (16) are diagonally mirrored, and the two mounting plates (13) are mirrored.

7. The adsorption-type air dryer for powder coating production according to claim 6, characterized in that: One of the hooks (15) abuts against the groove (16) on the side of the other hook (15).

8. The adsorption-type air dryer for powder coating production according to claim 1, characterized in that: The first adsorption tower (2) and the second adsorption tower (3) are respectively installed on the inside sides of the bracket (1), and a control cabinet (4), a wet air intake component (5) and a dry air outlet component (7) are respectively provided between the first adsorption tower (2) and the second adsorption tower (3). A regeneration gas intake component (8) is connected between the dry air outlet component (7) and the first adsorption tower (2) and the second adsorption tower (3). A regeneration gas discharge component (6) is provided on the back of the wet air intake component (5). Feed bolts (9) are connected to the top of one side of the first adsorption tower (2) and the second adsorption tower (3).

9. The adsorption-type air dryer for powder coating production according to claim 6, characterized in that: The mounting plate (13), fastening bolts (14) and hook rod (15) are all made of 316L stainless steel.

10. The adsorption-type air dryer for powder coating production according to claim 9, characterized in that: The fastening bolt (14) is fitted with a toothed anti-loosening washer or a double-layered self-locking washer.

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