Drying cylinder

Abstract

The utility model relates to a drying cylinder which comprises an outer shell, an inner container sleeved in the outer shell and a fine molecular sieve filled in the inner container, and further comprises a molecular sieve support arranged at the top of the inner container, the molecular sieve support comprises a spring cavity in the middle and a molecular sieve cavity arranged on the outer ring of the spring cavity, and a compression spring is arranged in the spring cavity. One end of the compression spring is connected with the molecular sieve bracket, the other end of the compression spring is connected with the top of the outer shell, and coarse molecular sieves are arranged in the spring cavity and the molecular sieve cavity. The coarse molecular sieve cavity is additionally arranged on the molecular sieve bracket, and the coarse molecular sieve is filled in the coarse molecular sieve cavity, so that large particles and other impurities can be effectively intercepted. Therefore, not only is the workload of the fine molecular sieve reduced, but also the filtering efficiency of the whole system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of air drying, in particular to a drying cylinder. Background Art

[0002] In commercial vehicles, especially heavy-duty vehicles like trucks and tractors, brake system reliability is crucial for safe operation. These vehicles are often equipped with pneumatic brake systems, which use compressed air as the medium for transmitting braking force. However, if moisture and other impurities in the air are not effectively removed, they can severely impact the performance and life of the brake system. Moisture can cause internal corrosion in the brake lines, increase frictional resistance, and potentially freeze in cold conditions, leading to brake failure and other problems. Therefore, efficient air drying equipment is a key factor in ensuring the proper functioning of pneumatic brake systems.

[0003] Traditional commercial vehicle air drying methods primarily involve dehumidification using hygroscopic materials such as molecular sieves, silica gel, or alumina. These materials effectively absorb moisture from the airflow, purifying the air. However, in practice, existing air dryer cartridge designs present the following challenges:

[0004] 1. Inadequate filtration: Some existing designs rely solely on fine molecule sieves to perform air purification and dehumidification. While fine molecule sieves have good adsorption capacity for small molecular weight substances (such as water vapor), they are unable to effectively intercept larger particles, which may cause contamination or damage to downstream components.

[0005] 2. Failure of the coarse molecular sieve: When air is taken in, the spring cavity is not filled with the coarse molecular sieve, resulting in a smaller resistance in the spring cavity than in the molecular sieve cavity. As a result, the air will preferentially pass through the spring cavity into the inner tank, thus failing to play the role of the coarse molecular sieve and affecting the final drying effect.

[0006] In view of the existence of the above problems, it is urgent to develop a new air drying cartridge that can provide better filtering effect and prevent air that has not been filtered by coarse molecular sieve from directly entering the inner tank. Utility Model Content

[0007] In view of the deficiencies in the background technology, the utility model provides a drying cylinder.

[0008] The technical solution adopted by the utility model is: a drying cylinder, comprising an outer shell, an inner liner sleeved in the outer shell, and a fine molecular sieve filled in the inner liner, and also comprising a molecular sieve support arranged on the top of the inner liner, the molecular sieve support comprising a spring cavity in the middle and a molecular sieve cavity arranged on the outer ring of the spring cavity, a compression spring being arranged in the spring cavity, one end of the compression spring being connected to the molecular sieve support, and the other end being connected to the top of the outer shell, and a coarse molecular sieve being arranged in both the spring cavity and the molecular sieve cavity.

[0009] Furthermore, a bottom cover is provided at the bottom of the outer shell, an air outlet is provided in the middle of the bottom cover, an air inlet is provided on the bottom cover outside the air outlet, and filter paper is provided between the inner liner outside the air inlet and the bottom cover.

[0010] Furthermore, one end of the filter paper is sealed to the installation step of the inner container through a first seal, and the other end is sealed to the bottom cover through a second seal.

[0011] Furthermore, a plurality of spacer blocks are provided in the air gap between the inner container and the outer shell.

[0012] Furthermore, air holes are provided on the bottom wall of the spring cavity, the upper and lower walls of the molecular sieve cavity, and the horizontal plate on the air outlet.

[0013] Furthermore, sponge filter plates are provided on the upper and lower sides of the bottom wall of the molecular sieve cavity and the bottom of the outer shell.

[0014] Furthermore, spring positioning steps are provided at the bottom of the spring cavity and the top of the outer shell.

[0015] The beneficial effects of the utility model are:

[0016] 1. Improved filtration efficiency: By adding a coarse molecular sieve cavity to the molecular sieve support and filling it with coarse molecular sieve, larger particles and other impurities can be effectively intercepted. This not only reduces the workload of the fine molecular sieve, but also improves the filtration efficiency of the entire system.

[0017] 2. Prevent untreated air from entering the inner tank directly: A coarse molecular sieve is also installed in the spring cavity, so that air can be filtered by the coarse molecular sieve regardless of whether it passes through the spring cavity or the molecular sieve cavity. This prevents untreated air from entering the inner tank directly through the spring cavity, ensuring air quality and improving the overall drying effect.

[0018] 3. Enhance system stability and reliability:

[0019] By placing coarse molecular sieves in both the spring chamber and the molecular sieve chamber, a more stable filtration system is formed. Even under pressure fluctuations or abnormal conditions, good filtration performance can be maintained, enhancing the robustness of the system.

[0020] In addition to the objects, features and advantages described above, the present invention has other objects, features and advantages.

[0021] The present invention will be described in further detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 1 Inner shell: 1. Outer shell; 2. Inner shell; 3. Fine molecular sieve; 4. Molecular sieve bracket; 5. Spring chamber; 6. Molecular sieve chamber; 7. Compression spring; 8. Coarse molecular sieve; 9. Bottom cover; 10. Air outlet; 11. Air inlet; 12. Filter paper; 13. Seal 1; 14. Mounting step; 15. Seal 2; 16. Air gap; 17. Spacer block; 18. Horizontal plate; 19. Air hole; 20. Sponge filter plate; 21. Spring positioning step. DETAILED DESCRIPTION

[0024] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0025] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indications will also change accordingly.

[0026] The utility model provides a drying cylinder.

[0027] In this embodiment, referring to Figure 1 The drying cylinder includes an outer shell 1, an inner liner 2 set in the outer shell 1, and a fine molecular sieve 3 filled in the inner liner. It also includes a molecular sieve bracket 4 arranged on the top of the inner liner, the molecular sieve bracket 4 includes a spring cavity 5 in the middle and a molecular sieve cavity 6 arranged on the outer ring of the spring cavity, a compression spring 7 is provided in the spring cavity, one end of the compression spring 7 is connected to the molecular sieve bracket, and the other end is connected to the top of the outer shell, and a coarse molecular sieve 8 is provided in both the spring cavity 6 and the molecular sieve cavity.

[0028] In the above technical solution, a dual filtration mechanism is achieved by installing a molecular sieve bracket on the top of the inner liner and placing a coarse molecular sieve in both the spring cavity and the molecular sieve cavity. This design not only effectively intercepts larger particulate matter and other impurities, reducing the burden on the fine molecular sieve, but also prevents untreated air from directly entering the inner liner, thereby improving the overall drying effect and filtration performance. Furthermore, a bottom cover is provided at the bottom of the outer shell, with an air outlet in the middle of the bottom cover. An air inlet is provided on the bottom cover outside the air outlet, and filter paper is provided between the inner liner and the bottom cover outside the air inlet.

[0029] Specifically, a bottom cover 9 is provided at the bottom of the outer shell, an air outlet 10 is provided in the middle of the bottom cover 9, an air inlet 11 is provided on the bottom cover outside the air outlet 10, and a filter paper 12 is provided between the inner liner outside the air inlet 11 and the bottom cover.

[0030] A bottom cover is installed at the bottom of the outer shell, with air outlet and air inlet provided on the cover. Filter paper is placed between the inner liner and the cover to further enhance filtration effectiveness. The filter paper provides preliminary filtration before air enters the dryer, removing some impurities and reducing contamination of the internal molecular sieve. This design also helps optimize the airflow path and improve gas flow efficiency.

[0031] Specifically, one end of the filter paper is sealed to the installation step 14 of the inner container through a sealing member 13 1 , and the other end is sealed to the bottom cover through a sealing member 2 15 .

[0032] Seals 1 and 2 seal the filter paper at both ends to the inner tank's mounting step and bottom cover, respectively, ensuring the filter paper's position is secure and well-sealed, preventing unfiltered air from bypassing the filter paper and entering the inner tank. This not only improves filtration effectiveness but also ensures the airtightness of the entire system, preventing efficiency losses caused by air leakage.

[0033] Specifically, a plurality of spacer blocks 17 are provided in the air gap 16 between the inner shell and the outer shell.

[0034] Several spacers are placed within the air gap between the inner liner and the outer shell to maintain an appropriate distance between the two, ensuring smooth airflow. The spacers also help support the inner liner, preventing it from deforming under high pressure or vibration and blocking the air gap, thereby improving the structural stability and service life of the entire device.

[0035] Specifically, air holes 19 are provided on the bottom wall of the spring cavity, the upper and lower walls of the molecular sieve cavity, and the horizontal plate 18 on the air outlet.

[0036] As shown by the arrows in the accompanying drawings, the air holes are provided to form a complete air passage in the drying cylinder.

[0037] Specifically, sponge filter plates 20 are provided on the upper and lower sides of the bottom wall of the molecular sieve cavity and the bottom of the outer shell.

[0038] Installing sponge filter plates on the upper and lower sides of the molecular sieve cavity bottom wall and the bottom of the outer shell can further enhance the filtration effect. The sponge filter plates have excellent adsorption properties and can capture more tiny particles and impurities, further purifying the air.

[0039] Specifically, a spring positioning step 21 is provided at the bottom of the spring cavity and the top of the outer shell.

[0040] Spring positioning steps are provided at the bottom of the spring chamber and the top of the outer shell to ensure that the compression spring operates in the correct position and prevent it from shifting or falling off. This design not only improves the working stability of the spring, but also extends the service life of the spring, thereby ensuring the reliability and long-term performance of the entire drying cylinder.

[0041] Technical personnel please note: Although the utility model has been described according to the above specific implementation methods, the concept of the utility model is not limited to this utility model. Any modification using the concept of the utility model will be included in the scope of protection of this patent right.

Claims

1. A drying cylinder comprising an outer shell, an inner liner sleeved within the outer shell, and a fine molecular sieve filled within the inner liner, characterized in that: It also includes a molecular sieve bracket arranged on the top of the inner liner, the molecular sieve bracket includes a spring cavity in the middle and a molecular sieve cavity arranged on the outer ring of the spring cavity, a compression spring is provided in the spring cavity, one end of the compression spring is connected to the molecular sieve bracket, and the other end is connected to the top of the outer shell, and coarse molecular sieves are provided in both the spring cavity and the molecular sieve cavity.

2. The drying cylinder according to claim 1, characterized in that: A bottom cover is provided at the bottom of the outer shell, an air outlet is provided in the middle of the bottom cover, an air inlet is provided on the bottom cover outside the air outlet, and filter paper is provided between the inner liner outside the air inlet and the bottom cover.

3. The drying cylinder according to claim 2, characterized in that: One end of the filter paper is sealed to the mounting step of the inner container through a first seal, and the other end is sealed to the bottom cover through a second seal.

4. The drying cylinder according to any one of claims 1 to 3, characterized in that: A plurality of spacer blocks are arranged in the air gap between the inner container and the outer shell.

5. The drying cylinder according to claim 2, characterized in that: Air holes are provided on the bottom wall of the spring cavity, the upper and lower walls of the molecular sieve cavity and the horizontal plate on the air outlet.

6. The drying cylinder according to claim 5, characterized in that: Sponge filter plates are provided on the upper and lower sides of the bottom wall of the molecular sieve cavity and the bottom of the outer shell.

7. The drying cylinder according to claim 1, characterized in that: The bottom of the spring cavity and the top of the outer shell are provided with spring positioning steps.

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