Dryer, air suspension air supply system and vehicle

Abstract

The utility model discloses a dryer which comprises a shell, the shell comprises an isolation column which divides the shell into two cavities, the isolation column is provided with an air inlet and an air outlet, the air inlet and the air outlet are connected with air guide channels leading to the two ends of the shell respectively, and drying agents are contained in the cavities; the first air guide piece is arranged at the air outlet of the shell, and the first air guide piece is communicated to the two cavities through the air outlet and the air guide channel; the second air guide piece is arranged at the air inlet of the shell, and the second air guide piece is communicated to the two cavities through the air inlet and the air guide channel; the first air guide piece or the second air guide piece is provided with a one-way flow limiting valve. Through the connection of the two cavities, the first gas guide piece, the second gas guide piece and the gas guide channel, gas enters the two cavities through the gas guide channel after entering the dryer from the gas inlet, is dried by the drying agent and then is uniformly discharged from the gas outlet through the one-way flow limiting valve, and the problem that an existing dryer is low in gas drying efficiency is solved.

Description

Technical Field

[0001] The utility model relates to the field of dryers, in particular to a dryer used in an air supply system of an air suspension of a vehicle. Background Art

[0002] The suspension system is of great significance to the driving and safety performance of the vehicle. As a suspension system that uses compressed air to support the weight of the vehicle body, the air suspension has excellent shock absorption and adjustability. Dry air is required in the air suspension system as the cornerstone of its technical realization. At present, there are dryers suitable for air suspension systems, which generally have a sealed single-chamber structure. The air inlet and outlet can be connected to other units in the air suspension system to form a relatively independent air drying unit.

[0003] However, such a separate single-chamber dryer has the problem of small chamber volume and low gas drying rate; at the same time, when the inlet and outlet gas cannot be limited at the gas port, air flow backflow is likely to occur, thereby affecting the gas drying efficiency. Utility Model Content

[0004] The utility model provides a dryer, which is specifically used for a vehicle air suspension air supply system, has a simple structure, has two cavities that can perform drying simultaneously, and is provided with a one-way flow limiting valve at the air inlet to prevent gas backflow, thereby solving the problems of slow drying speed of existing air dryers and easy backflow of dried gas, thereby affecting drying efficiency.

[0005] To achieve the above purpose, the utility model provides the following technical solutions: a dryer, the dryer includes a shell, which includes a separation column that separates the shell into two cavities, an air inlet and an air outlet are provided on the separation column, the air inlet and the air outlet are respectively connected to air guide channels leading to the two ends of the shell, and a desiccant is contained in the cavity; a first air guide is arranged at the air inlet of the shell, and the first air guide is connected to the two cavities via the air inlet and the air guide channel; a second air guide is arranged at the air outlet of the shell, and the second air guide is connected to the two cavities via the air outlet and the air guide channel; a one-way flow limiting valve is provided on the first air guide or the second air guide. Through the connection between the two cavities and the first air guide, the second air guide, and the air guide channel, after the gas enters the dryer from the air inlet through the one-way flow limiting valve, it can be divided into two ways and enter the two cavities through the air guide channel at the same time, and is dried by the desiccant, and then discharged from the air outlet uniformly, thereby solving the problem of low gas drying efficiency of the existing dryer.

[0006] As one aspect of the utility model, a freely movable valve ball is provided in the one-way flow limiting valve, and the valve ball 21 is used to block the valve port of the one-way flow limiting valve. There is a flow limiting hole around the valve port, and the valve port is a through hole smaller than the diameter of the valve ball. The valve ball blocks the valve port when the external pressure of the shell is greater than the internal pressure. The valve ball is away from the valve port in the gas outlet state, connecting the first gas guide, the gas guide channel and the cavity; when the external gas flows back from the gas outlet, the valve ball blocks the valve port, thereby separating the first gas guide and the gas guide channel, preventing gas from flowing back, thereby preventing the undried gas from flowing back into the cavity and affecting the drying efficiency.

[0007] As another aspect of the present invention, an end cover fixed by screws is provided in the middle of the upper end of the shell 1 for fixing the shell.

[0008] As another aspect of the utility model, air guide channels are respectively opened at the positions of the isolation column corresponding to the air inlet and the air outlet, and the air guide channels are respectively connected to the two ends inside the shell, so that the air inlet and the air outlet are respectively connected to the two cavities, so that the air flow can pass from the air inlet from the upper end into the two cavities, and then enter the air outlet from the lower ends of the two cavities, and finally be discharged from the tank body.

[0009] As another aspect of the utility model, the position inside the body corresponding to the air guide channels at both ends also has: an elastic member, one end of which is connected to the inner bottom surface of the lower end of the shell, and the other end is connected to the air perforated sheet, and the air perforated sheet is in contact with the desiccant. There can also be a filter sheet between the air perforated sheet and the desiccant, which is respectively arranged between the upper and lower air perforated sheets and the desiccant, and is in contact and squeezed with the desiccant to filter the passing gas. The superimposed structure composed of the elastic member, the air perforated sheet and the filter sheet arranged at the lower end of the body can squeeze and restrict the desiccant from both ends, and concentrate the desiccant in a certain area.

[0010] As another aspect of the present invention, the dryer further includes a fastener, which is arranged on the outside of the shell and is used to fix the shell to the outside.

[0011] As another aspect of the utility model, the dryer further comprises a plurality of reinforcing ribs arranged transversely in the middle of the outer side wall of the shell.

[0012] To this end, another object of the present invention is to provide an air suspension air supply system, which includes a dryer with all the features as described above.

[0013] To this end, another object of the present utility model is to provide a vehicle, which includes a dryer and an air suspension air supply system with all the characteristics as described above.

[0014] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0016] Figure 1 It is a schematic diagram of the external structure of the dryer of the utility model;

[0017] Figure 2 It is a cross-sectional structural diagram of the utility model;

[0018] Figure 3 It is a cross-sectional view of the air guide member of the utility model;

[0019] Figure 4 This is a cross-sectional detail view of the first air guide member of the utility model;

[0020] Figure 5 This is a cross-sectional view of the first air guide valve ball of the utility model in the moving direction;

[0021] Reference numerals:

[0022] 1. Shell, 12. Air outlet, 13. Air inlet, 14. Isolation column, 2. First air guide, 20. One-way flow limiting valve, 21. Valve ball, 22. Valve port, 23. Throttle port, 3. Second air guide, 4. Cavity, 40. Air guide channel, 41. Elastic member, 42. Air perforated sheet, 43. Filter sheet, 5. Fastener, 6. Reinforcement rib; DETAILED DESCRIPTION

[0023] In order to be able to understand the features and technical contents of the embodiments of the utility model in more detail, the implementation of the embodiments of the utility model is described in detail below in conjunction with the accompanying drawings. The attached drawings are for reference only and are not used to limit the embodiments of the utility model. In the following technical description, for the convenience of explanation, a full understanding of the disclosed embodiments is provided through multiple details. However, one or more embodiments can still be implemented without these details. In other cases, to simplify the drawings, well-known structures and devices can be simplified for display.

[0024] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic expressions of the above terms do not necessarily refer to the same embodiment or example.

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention.

[0026] like Figure 1-5 As shown, the utility model provides the following technical solutions to solve the problems of slow drying speed and easy backflow of dried gas in existing air dryers, thus affecting drying efficiency: a dryer, the dryer includes a shell 1, which includes an isolation column 14 that divides the shell 1 into two cavities 4, and an air inlet 13 and an air outlet 12 are opened on the isolation column 14, the air inlet 13 and the air outlet 12 are respectively connected to air guide channels 40 leading to the two ends of the shell 1, and the cavity 4 contains a desiccant; a first air guide 2 is arranged at the air outlet 12 of the shell 1, and the first air guide 2 reaches the two cavities 4 via the air outlet 12 and the air guide channel 40; a second air guide 3 is arranged at the air inlet 13 of the shell 1, and the second air guide 3 is connected to the two cavities 4 via the air inlet 13 and the air guide channel 40; a one-way limiting valve 20 is provided on the first air guide 2 or the second air guide 3. In this embodiment, through the connection between the two cavities 4 and the first air guide 2 and the second air guide 3, after the gas enters the dryer from the air inlet 13 through the one-way limiting valve 20, it can be divided into two paths and enter the two cavities 4 at the same time, dried by the desiccant, and then discharged from the air outlet 12, thereby improving the gas drying efficiency of the dryer. In other embodiments, a one-way valve can also be set on the air inlet 13 to limit the outside air from entering the dryer from the air inlet 13, and a one-way limiting valve 20 can also be set at the air outlet 12 and the air inlet 13 at the same time, so as to achieve more stringent gas flow direction control and ensure that the gas can be dried efficiently.

[0027] Specifically, the quantity and type of desiccant can be increased or decreased as needed. In the present embodiment, the material of the desiccant is molecular sieve, which is a synthetic hydrated aluminosilicate (zeolite) or natural zeolite with the function of screening molecules. It has the advantages of high adsorption capacity, strong selectivity, high temperature resistance and does not affect the ventilation efficiency of the dryer. In other embodiments, the desiccant can also be other silica particles or other aluminosilicates.

[0028] In this embodiment, the shell 1 can be formed by forging, casting, injection molding and other processes. In this embodiment, PA6T is used as the shell 1 material of the dryer. It has excellent high-temperature rigidity, dimensional stability and chemical resistance, and is easy to process while ensuring rigidity.

[0029] In this embodiment, if Figure 3 and Figure 4 As shown, the one-way flow limiting valve 20 has a movable valve ball 21 therein, and the valve ball 21 is used to block the valve port 22 of the one-way flow limiting valve 20 . The diameter of the valve port 22 is smaller than the diameter of the valve ball 21 . The valve ball 21 blocks the valve port 22 when the external pressure of the shell 1 is greater than the internal pressure of the shell 1 .

[0030] Specifically, the one-way limiting valve 20 switches the on and off of the gas path by controlling the movement of the valve ball 21. The valve ball 21 is away from the valve port 22 in the gas outlet state, connecting the first gas guide member 2, the gas guide channel 40 and the cavity 4; when the external gas flows back from the gas outlet 12, the valve ball 21 blocks the valve port 22, thereby separating the first gas guide member 2 and the gas guide channel 40, preventing the gas from flowing back, thereby preventing the undried gas from flowing back into the cavity 4 and affecting the drying efficiency. At this time, only a very small amount of gas can pass through the throttle port 23 around the valve port 22 to balance the air pressure.

[0031] In this embodiment, if Figure 1 As shown, the middle part of the upper end of the dryer shell 1 has an end cover fixed by screws, which is used to reinforce and seal the dryer shell 1. In other embodiments of the utility model, a sealed dryer body can also be formed by an interference fit connection. Other disassembly and assembly methods that can achieve the effect of sealing the dryer body can also be used as embodiments of the utility model, such as piston seals, snap-fit ​​structures, etc.

[0032] In this embodiment, if Figure 1 and Figure 2 As shown, the shell 1 includes an isolation column 14, and the isolation column 14 has air guide channels 40 at the positions corresponding to the air inlet 13 and the air outlet 12. The air guide channels 40 are respectively connected to the two ends inside the shell 1, so that the air inlet 13 and the air outlet 12 are respectively connected to the two cavities 4, so that the air flow can enter the two cavities 4 from the air inlet 13, then enter the air outlet 12 from the two cavities 4, and finally be discharged from the tank body.

[0033] Specifically, the air inlet 13 and the air outlet 12 are located on the isolation column 14, each of which is at a distance from the two ends of the shell 1. In order to make full use of the space inside the shell, the air guide channel 40 extends from the air inlet 13 and the air outlet 12 to both ends and is connected to the cavity 4, so that the airflow can have the longest possible drying path in the dryer shell 1, further improving the drying effect.

[0034] like Figure 2 As shown, there is also an elastic member 41 at the position corresponding to the air guide channels 40 at both ends in the cavity 4, one end of which is connected to the inner bottom surface of the lower end of the shell 1, and the other end is connected to the air perforated sheet 42, and the air perforated sheet 42 is in contact with the desiccant; there can also be a filter sheet 43 between the air perforated sheet 42 and the desiccant, which is respectively arranged between the upper and lower air perforated sheets 42 and the desiccant, and is in contact and squeezed with the desiccant to filter the passing gas. The superimposed structure composed of the elastic member 41, the air perforated sheet 42 and the filter sheet 43 arranged at the lower end of the body can extrude and limit the desiccant from both ends, so as to concentrate the desiccant in a certain area.

[0035] Among them, the filter 43 is made of felt or plastic wire or glass fiber, and plays the role of sound absorption, shock absorption, heat insulation, and filtering of foreign particles. Especially when the desiccant particles are broken and powdery substances are generated, the filter 43 can effectively prevent small solid particles or dust from entering the system pipeline, and perform double filtering on the gas at corresponding positions in the upper and lower ends of the shell 1, adsorbing the dust particles remaining in the gas, and ensuring that no other impurities are carried in the airflow.

[0036] Furthermore, in this embodiment, the elastic member 41 is a spring. In other embodiments, the elastic member 41 may be other elastic materials with supporting force. The elastic member 41 is connected to the air-permeable sheet 42 at both ends in the shell 1, and is in contact and squeezed with the desiccant through the filter sheet 43. When the desiccant expands or the desiccant particles and the dryer body produce friction and squeezing, the elastic member 41 will produce a certain deformation, thereby providing a buffer for the desiccant and preventing it from breaking.

[0037] As a specific embodiment of the installation of the dryer, the dryer further includes a fastener 5, which is arranged outside the housing 1 and is used to fix the dryer housing 1 to the outside. In this embodiment, the fastener 5 is a screw that fixes the dryer housing 1 to the external vehicle body or other parts. In other embodiments, other fixing methods such as riveting and welding can also be used.

[0038] As a specific embodiment of the dryer reinforcement, the dryer further comprises a plurality of reinforcing ribs 6 transversely arranged in the middle of the outer side wall of the shell 1. These reinforcing ribs 6 are used to stabilize the structure and enhance the stability of the dryer structure.

[0039] In another embodiment of the utility model, an air suspension air supply system is provided, which includes a dryer with all the features as described above, and the dryer is connected to an air compressor or other components to dry and filter the gas entering from the outside.

[0040] In another embodiment of the utility model, a vehicle is provided, which comprises a dryer and an air suspension air supply system having all the features as described above, and the air used by the air suspension of the vehicle is dried by the dryer in this embodiment.

[0041] In a specific embodiment, during the gas drying process of the dryer, the gas enters from the air inlet 13 through the second air guide 3, the air flow enters the upper part of the cavity 4 through the air guide channel 40, flows through the air permeable plate 42 and the filter plate 43, and filters the gas once to adsorb the dust particles remaining in the gas; then the air flow passes through the desiccant in the cavity 4 to adsorb the moisture in the gas, which plays a drying role; finally, the gas is filtered twice through the air permeable plate 42 and the filter plate 43 at the lower end, and then the air flow finally passes through the air outlet 12 to be discharged from the first air guide 22, at which time the valve ball 21 of the one-way flow limiting valve 20 is pushed open by the air flow to form a gap with the valve port 22, and the air flow is thus passed to the outside through the valve ball 21; when the outside air flow generates a backflow, the valve ball 21 will be close to the valve port 22 due to the pressure difference on both sides and block it, thereby playing the role of closing the one-way flow limiting valve 20, at which time the air flow can only flow from the throttle port 23 around the valve port 22, and the air flow is throttled by controlling the size of the airway passage. In this embodiment, the one-way flow limiting valve 20 can expand the airway during normal gas outlet by creating a gap between the valve ball 21 and the valve port 22, thereby increasing the gas flow rate; and when gas is about to flow back, it will push the valve ball 21 and the valve port 22 to fit tightly, closing the one-way flow limiting valve 20, leaving only the throttle port 23, thereby limiting the gas flow rate. Such a dryer uses two tanks to dry the gas, controls the airflow through the two tanks through the airway design, and adds a one-way flow limiting valve 20 at the gas outlet 12 to control the flow of the gas, effectively improving the gas drying efficiency.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0043] In addition, in the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0044] In the present invention, unless otherwise clearly specified and limited, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0045] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0046] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A dryer, characterized in that: include: A shell (1), comprising an isolating column (14) for isolating the shell (1) into two cavities (4), the isolating column (14) being provided with an air inlet (13) and an air outlet (12), the air inlet (13) and the air outlet (12) being respectively connected to air guide channels (40) leading to two ends of the shell (1), and the cavity (4) containing a desiccant; A first air guide (2) is arranged at the air outlet (12) of the housing (1), the first air guide (2) being connected to the two cavities (4) via the air inlet (13) and the air guide channel (40); A second air guide (3) is arranged at the air inlet (13) of the housing (1), the second air guide (3) being connected to the two cavities (4) via the air outlet (12) and the air guide channel (40); The first air guide (2) or the second air guide (3) is provided with a one-way flow limiting valve (20).

2. The dryer according to claim 1, characterized in that The one-way flow limiting valve (20) has a movable valve ball (21) therein, and the valve ball (21) is used to block the valve port (22) of the one-way flow limiting valve (20).

3. The dryer according to claim 2, characterized in that The diameter of the valve port (22) is smaller than the diameter of the valve ball (21), and the valve ball (21) blocks the valve port (22) when the pressure outside the housing (1) is greater than the pressure inside the housing (1).

4. The dryer according to claim 1, characterized in that An end cover fixed with screws is provided in the middle of the upper end of the shell (1).

5. The dryer according to claim 1, characterized in that The air guide channels (40) are respectively provided at positions of the isolation column (14) corresponding to the air inlet (13) and the air outlet (12); the air guide channels (40) are respectively connected to two ends of the interior of the shell (1), so that the air inlet (13) and the air outlet (12) are respectively connected to the two cavities (4).

6. The dryer according to claim 1, characterized in that The positions in the cavity (4) corresponding to the air guide channels (40) at the two ends also have: The elastic member (41) has one end connected to the inner bottom surface of the lower end of the shell (1) and the other end connected to the air perforated sheet (42), and the air perforated sheet (42) is in contact with the desiccant.

7. The dryer according to claim 1, characterized in that It also comprises a fastener (5) which is arranged on the outside of the shell (1) and is used to fix the shell (1) to the outside.

8. The dryer according to claim 1, characterized in that It also includes a plurality of reinforcing ribs (6) arranged transversely in the middle of the outer side wall of the shell (1).

9. An air suspension air supply system, characterized in that: Comprising a dryer according to any one of claims 1-8.

10. A vehicle, characterized in that: The invention comprises the air suspension air supply system as claimed in claim 9.

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