Double-cylinder type air dryer

Abstract

The utility model relates to a double-cylinder type air dryer which comprises a first drying cylinder, a second drying cylinder and a valve assembly connected to the bottom of the first drying cylinder and the bottom of the second drying cylinder. A connecting channel and a valve are arranged in the valve assembly, the connecting channel comprises a main air inlet channel, a first air inlet channel, a second air inlet channel, a first regeneration exhaust channel, a second regeneration exhaust channel, a main air outlet channel, a first air exchange channel and a second air exchange channel, and the valve comprises a first ball valve element, a second ball valve element, a first electromagnetic valve and a second electromagnetic valve. The first drying cylinder and the second drying cylinder of the double-cylinder type air dryer can perform regeneration and drying of compressed air in turn, so that the double-cylinder type air dryer can constantly convey dry compressed air to the outside all the time, and all communicating pipelines and valves are intensively arranged on the valve assembly. The structure of the communicating pipeline and the valve is simplified, faults are not prone to occurring, the structure is simple, maintenance is convenient, and labor and maintenance cost is saved.

Description

Technical Field

[0001] This utility model relates to the field of compressed air drying technology, and in particular to a dual-cylinder air dryer. Background Technology

[0002] Compressed air is commonly used in pneumatic components of various mechanical equipment, and its quality directly affects the operation and performance of these components. Untreated compressed air typically contains three main substances: oil, water, and dust. Taking water as an example, water accumulation can cause severe corrosion of valves and pipes. Especially in winter, condensation can freeze, leading to blockages in braking system lines, brake valve malfunctions, and other failures, affecting operational safety. Therefore, compressed air dryers are necessary to dry the compressed air.

[0003] Existing technologies include dual-tower electronically controlled air dryers and purifiers, but their electronic control systems and connecting pipelines are dispersed, resulting in complex and bulky dryer structures. Furthermore, the complex electronic control systems are prone to malfunctions, leading to high production and maintenance costs. Therefore, there is a need to design a lightweight, simplified, and miniaturized dryer to address these issues. Utility Model Content

[0004] Therefore, the purpose of this utility model is to overcome the shortcomings of the prior art and provide a dual-cylinder air dryer.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows:

[0006] A dual-cylinder air dryer, comprising:

[0007] The assembly includes a first drying cylinder, a second drying cylinder, and valves connected to the bottom of the first and second drying cylinders.

[0008] Both the first drying cylinder and the second drying cylinder include a cylinder body and a gas conduit disposed inside the cylinder body. The cylinder body is equipped with a drying unit, and the top end of the gas conduit is provided with a vent hole communicating with the inside of the cylinder body.

[0009] The valve assembly is provided with a connecting channel and a valve, the connecting channel includes a main air inlet channel, a first air inlet channel, a second air inlet channel, a first regeneration exhaust channel, a second regeneration exhaust channel, a main air outlet channel, a first air exchange channel and a second air exchange channel, the outer wall of the valve assembly is provided with an air inlet hole communicating with the main air inlet channel and an air outlet hole communicating with the main air outlet channel, the first end of the first air inlet channel communicates with the main air inlet channel, and the second end communicates with the bottom of the cylinder body of the first drying cylinder, the first end of the second air inlet channel communicates with the main air inlet channel, and the second end communicates with the bottom of the cylinder body of the second drying cylinder, part of the first air inlet channel also communicates with the first regeneration exhaust hole in the outer wall of the valve assembly through the first regeneration exhaust channel, part of the second air inlet channel also communicates with the second regeneration exhaust hole in the outer wall of the valve assembly through the second regeneration exhaust channel, the first end of the first air exchange channel communicates with the main air outlet channel, and the second end communicates with the bottom end of the gas guide pipe of the first drying cylinder, the first end of the second air exchange channel communicates with the main air outlet channel, and the second end communicates with the bottom end of the gas guide pipe of the second drying cylinder, wherein the first air exchange channel is further provided with a first throttling hole communicating with the main air outlet channel at a position close to the first end, and the second air exchange channel is further provided with a second throttling hole communicating with the main air outlet channel at a position close to the first end.

[0010] The valve includes a first ball valve core, a second ball valve core, a first electromagnetic valve and a second electromagnetic valve; the first ball valve core is movably arranged in a predetermined position of the main air inlet channel to alternately block the first end of the first air inlet channel and the first end of the second air inlet channel, the second ball valve core is movably arranged in a predetermined position of the main air outlet channel to alternately block the first end of the first air exchange channel and the first end of the second air exchange channel, the first electromagnetic valve is used to open or close the first regeneration exhaust channel, and the second electromagnetic valve is used to open or close the second regeneration exhaust channel.

[0011] As an embodiment, the first electromagnetic valve and the second electromagnetic valve are connected with a time relay, and the time relay periodically changes the state of the first electromagnetic valve and the second electromagnetic valve according to a set time.

[0012] As an embodiment, the valve assembly includes a left valve body, an intermediate valve body and a right valve body which are sequentially assembled, the first drying cylinder is connected with the left valve body, the second drying cylinder is connected with the right valve body, the first air inlet channel, the first regeneration exhaust channel and the first air exchange channel are all formed in the left valve body, the second air inlet channel, the second regeneration exhaust channel and the second air exchange channel are all formed in the right valve body, and the main air inlet channel and the main air outlet channel are jointly formed by the left valve body, the intermediate valve body and the right valve body.

[0013] As an implementation form, the first and second regeneration exhaust holes are both provided with mufflers.

[0014] As an implementation form, the double-cylinder air dryer further comprises a box body and a control panel, the valve assembly is installed in the box body, and the control panel is arranged on the front side of the box body and electrically connected with the first and second electromagnetic valves.

[0015] As an implementation form, the double-cylinder air dryer further comprises a drying cylinder fixing plate, and the top ends of the first and second drying cylinders are both fixed on the drying cylinder fixing plate.

[0016] As an implementation form, the air inlet hole and the air outlet hole are both provided with two.

[0017] As an implementation form, the drying unit is a drying agent arranged in the cylinder body, and the bottom of the cylinder body is provided with a supporting net for supporting the drying agent.

[0018] As an implementation form, the cylinder body is provided with a filter screen at the top of the drying agent, and the filter screen can intercept dust particles with a diameter greater than 10 μm in the air.

[0019] As an implementation form, the double-cylinder air dryer further comprises a valve body reinforcing plate, and the left valve body, the middle valve body and the right valve body are all connected to the valve body reinforcing plate.

[0020] The double-cylinder air dryer can change the opening and closing states of the first and second electromagnetic valves, so that the first and second drying cylinders can alternately regenerate and dry compressed air, and the double-cylinder air dryer can continuously supply dry compressed air to the outside, ensure that the equipment using compressed air can continuously work, and improve the continuous operation time of the equipment.

[0021] In order to better understand and implement, the utility model is described in detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0022] Figure 1 It is a structure schematic view of the double-cylinder air dryer in the embodiment of the application;

[0023] Figure 2 It is an explosion structure schematic view of the double-cylinder air dryer in the embodiment of the application;

[0024] Figure 3 Figure 1 is a partial cross-sectional view of a double-cylinder air dryer according to an embodiment of the present application;

[0025] Figure 4 Figure 2 is a partial cross-sectional view of a double-cylinder air dryer according to another embodiment of the present application;

[0026] Figure 5 Figure 3 is a partial cross-sectional view of a double-cylinder air dryer according to yet another embodiment of the present application;

[0027] Figure 6 Figure 4 is a schematic view of air flow circulation of a double-cylinder air dryer according to an embodiment of the present application;

[0028] Figure 7 Figure 5 is a schematic view of air flow circulation of a double-cylinder air dryer according to another embodiment of the present application;

[0029] BRIEF DESCRIPTION OF DRAWINGS

[0030] 1. first drying cylinder; 11. cylinder body; 12. gas conduit; 13. drying unit; 14. support net; 2. second drying cylinder; 3. valve assembly; 301. left valve body; 302. middle valve body; 303. right valve body; 31. main air inlet passage; 311. air inlet hole; 32. first air inlet passage; 33. second air inlet passage; 34. first regeneration air outlet passage; 341. first regeneration air outlet hole; 35. second regeneration air outlet passage; 351. second regeneration air outlet hole; 36. main air outlet passage; 361. air outlet hole; 37. first air exchange passage; 371. first throttling hole; 38. second air exchange passage; 381. second throttling hole; 41. first ball valve core; 42. second ball valve core; 43. first solenoid valve; 44. second solenoid valve; 5. box body; 6. control panel; 7. drying cylinder fixing plate; 8. valve body reinforcing plate. DETAILED DESCRIPTION

[0031] To further illustrate the embodiments, the present application provides accompanying drawings. These drawings are part of the disclosure content of the present application, which mainly serve to illustrate the embodiments, and can be combined with the related description of the specification to explain the operating principle of the embodiments. With reference to these contents, those skilled in the art should be able to understand other possible implementations and advantages of the present application.

[0032] In the description of the utility model, it is understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "left", "right", "top", "bottom", "inner", "outer", "axial", "radial", "circumferential" and the like is the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0033] Please refer to Figures 1-7 The embodiment provides a double-cylinder air dryer which comprises a first drying cylinder 1, a second drying cylinder 2 and a valve assembly 3 connected to the bottom of the first drying cylinder 1 and the second drying cylinder 2.

[0034] The first drying cylinder 1 and the second drying cylinder 2 each comprise a cylinder body 11 and a gas guide pipe 12 arranged in the cylinder body 11, the cylinder body 11 is internally provided with a drying unit 13, and the top end of the gas guide pipe 12 is provided with a gas passage hole in communication with the inside of the cylinder body 11.

[0035] The valve assembly 3 is internally provided with a connecting channel and a valve, the connecting channel comprises a main air inlet channel 31, a first air inlet channel 32, a second air inlet channel 33, a first regeneration air outlet channel 34, a second regeneration air outlet channel 35, a main air outlet channel 36, a first air exchange channel 37 and a second air exchange channel 38, wherein the outer wall of the valve assembly 3 is provided with an air inlet hole 311 in communication with the main air inlet channel 31 and an air outlet hole 361 in communication with the main air outlet channel 36, the air inlet hole 311 can be connected with the air outlet end of an external air conveying device (an air compressor), so that compressed air to be dried can be introduced, and the air outlet hole 361 can be connected with an external air using device (such as an electromagnetic air valve), so that dried compressed air can be output.

[0036] The first end of the first air inlet channel 32 is in communication with the main air inlet channel 31, and the second end is communicated to the bottom of the cylinder body 11 of the first drying cylinder 1, so that compressed air to be dried can be introduced into the first drying cylinder 1, the first end of the second air inlet channel 33 is in communication with the main air inlet channel 31, and the second end is communicated to the bottom of the cylinder body 11 of the second drying cylinder 2, so that compressed air to be dried can be introduced into the second drying cylinder 2. Part of the first air inlet channel 32 is also communicated to the first regeneration air outlet hole 341 in the outer wall of the valve assembly 3 through the first regeneration air outlet channel 34, and part of the second air inlet channel 33 is also communicated to the second regeneration air outlet hole 351 in the outer wall of the valve assembly 3 through the second regeneration air outlet channel 35, so that the regeneration of the drying unit 13 is realized by cooperating with the valve, which will be described in detail later.

[0037] The first end of the first gas exchange channel 37 is communicated with the main gas outlet channel 36, and the second end is communicated to the bottom end of the gas guide pipe 12 of the first drying cylinder 1. The first end of the second gas exchange channel 38 is communicated with the main gas outlet channel 36, and the second end is communicated to the bottom end of the gas guide pipe 12 of the second drying cylinder 2. The first gas exchange channel 37 is further provided with a first throttling hole 371 communicated with the main gas outlet channel 36 at a position close to the first end of the first gas exchange channel 37. The second gas exchange channel 38 is further provided with a second throttling hole 381 communicated with the main gas outlet channel 36 at a position close to the first end of the second gas exchange channel 38.

[0038] The valve comprises a first ball valve core 41, a second ball valve core 42, a first electromagnetic valve 43 and a second electromagnetic valve 44. The first ball valve core 41 is movably arranged in a preset position of the main gas inlet channel 31 to alternately block the first end of the first gas inlet channel 32 and the first end of the second gas inlet channel 33. The second ball valve core 42 is movably arranged in a preset position of the main gas outlet channel 36 to alternately block the first end of the first gas exchange channel 37 and the first end of the second gas exchange channel 38. The first electromagnetic valve 43 is used to open or close the first regeneration exhaust channel 34. The second electromagnetic valve 44 is used to open or close the second regeneration exhaust channel 35.

[0039] The working principle of the double-cylinder air dryer of the embodiment is as follows:

[0040] Taking the case that the second drying cylinder 2 performs drying work first and the first drying cylinder 1 performs regeneration work as an example, the first ball valve core 41 of the valve is moved to the position of the main gas inlet channel 31, and the second ball valve core 42 is moved to the position of the main gas outlet channel 36. Figure 6As shown, at this time, the first electromagnetic valve 43 opens the first regeneration exhaust passage 34, and the second electromagnetic valve 44 closes the second regeneration exhaust passage 35. At this time, compressed air is introduced into the main air inlet passage 31 from the air inlet hole 311. Since the first electromagnetic valve 43 is in the open state, the second electromagnetic valve 44 is in the closed state, and a part of the first air inlet passage 32 is communicated to the first regeneration exhaust hole 341 through the first regeneration exhaust passage 34, the pressure of the first air inlet passage 32 and the pressure of the first drying cylinder 1 are relatively small, so that the first ball valve core 41 can move towards the first end of the first air inlet passage 32 to block the first end of the first air inlet passage 32, and the second ball valve core 42 can move towards the first end of the first air exchange passage 37 to block the first end of the first air exchange passage 37. Thus, the compressed air entering from the air inlet hole 311 enters the cylinder body 11 of the second drying cylinder 2 through the main air inlet passage 31 and the second air inlet passage 33 in sequence, and is dehumidified by the dehumidifying unit 13. The dehumidified compressed air then enters the main air outlet passage 36 through the gas guide pipe 12 of the second drying cylinder 2 and the second air exchange passage 38 in sequence. Most of the dehumidified compressed air is discharged to the outside through the air outlet hole 361, and a small amount of dehumidified compressed air enters the dehumidifying unit 13 of the first drying cylinder 1 to regenerate it (i.e. remove the moisture in the humid dehumidifying unit 13), and finally is released to the atmosphere through the first air inlet passage 32, the first regeneration exhaust passage 34 and the first regeneration exhaust hole 341, while the water droplets in the first drying cylinder 1 can be removed.

[0041] At this time, if the first electromagnetic valve 43 closes the first regeneration exhaust passage 34 and the second electromagnetic valve 44 closes the second regeneration exhaust passage 35, only the second drying cylinder 2 performs the drying work. As shown, Figure 7 At this time, the compressed air enters from the air inlet hole 311 through the main air inlet passage 31, the second air inlet passage 33, the cylinder body 11 of the second drying cylinder 2, the gas guide pipe 12 of the second drying cylinder 2, the second air exchange passage 38 and the main air outlet passage 36 in sequence, and is discharged from the air outlet hole 361. A small part of the compressed air dried by the second drying cylinder 2 enters the first drying cylinder 1 through the first throttling hole 371 and the first air exchange passage 37, so that the pressures in the first drying cylinder 1 and the second drying cylinder 2 are almost the same.

[0042] According to the above, if the first electromagnetic valve 43 closes the first regeneration exhaust passage 34 and the second electromagnetic valve 44 opens the second regeneration exhaust passage 35 at this time, the first drying cylinder 1 performs the drying work, the second drying cylinder 2 performs the regeneration work, and the specific flow process of the compressed air is not repeated.

[0043] As can be seen from the above, the double-cylinder air dryer of the embodiment can change the opening and closing states of the first electromagnetic valve 43 and the second electromagnetic valve 44, so that the first drying cylinder 1 and the second drying cylinder 2 can alternately perform regeneration and drying of compressed air, so that the double-cylinder air dryer can continuously deliver dry compressed air to the outside at all times, ensuring that the equipment using compressed air can continuously work, and improving the continuous operation time of the equipment. All the connecting pipes and valves are arranged on the valve assembly 3, which simplifies the structure of the connecting pipes and valves, is not prone to failure, has a simple structure, is convenient to maintain, and saves labor and maintenance costs. In addition, a part can be separated for regeneration of the drying unit 13, which reduces the waste of clean compressed air, improves the overall drying efficiency, and is more energy-efficient.

[0044] Preferably, the first electromagnetic valve 43 and the second electromagnetic valve 44 of the embodiment are connected with a time relay, which periodically changes the states of the first electromagnetic valve 43 and the second electromagnetic valve 44 according to a set time period. Thus, the opening and closing states of the first electromagnetic valve 43 and the second electromagnetic valve 44 can be periodically controlled, so that the compressed air can be effectively dried.

[0045] Preferably, the valve assembly 3 of the embodiment comprises a left valve body 301, an intermediate valve body 302, and a right valve body 303 assembled in sequence, the first drying cylinder 1 is connected with the left valve body 301, the second drying cylinder 2 is connected with the right valve body 303, the first air inlet channel 32, the first regeneration exhaust channel 34, and the first air exchange channel 37 are all formed in the left valve body 301, the second air inlet channel 33, the second regeneration exhaust channel 35, and the second air exchange channel 38 are all formed in the right valve body 303, and the main air inlet channel 31 and the main air outlet channel 36 are formed by the left valve body 301, the intermediate valve body 302, and the right valve body 303. The valve assembly 3 thus arranged has a simple structure, is convenient to manufacture and use, and is conducive to reducing costs.

[0046] Preferably, a silencer is installed at each of the first regeneration exhaust hole 341 and the second regeneration exhaust hole 351 to reduce the noise during exhaust and improve the use experience.

[0047] Preferably, the double-cylinder air dryer of the embodiment further comprises a box body 5 and a control panel 6, the valve assembly 3 is installed in the box body 5, and the control panel 6 is arranged on the front side of the box body 5 and is electrically connected with the first electromagnetic valve 43 and the second electromagnetic valve 44.

[0048] Preferably, the double-cylinder air dryer of the embodiment further comprises a drying cylinder fixing plate 7, the top end of the first drying cylinder 1 and the top end of the second drying cylinder 2 are both fixed on the drying cylinder fixing plate 7. Thus, the first drying cylinder 1 and the second drying cylinder 2 are more firmly fixed.

[0049] Preferably, the air inlet hole 311 and the air outlet hole 361 are both provided with two holes to facilitate the access of more compressed air and the output of more dry compressed air.

[0050] Preferably, the drying unit 13 is a drying agent provided in the barrel 11, and the bottom of the barrel 11 is provided with a supporting net 14 for supporting the drying agent to avoid the falling of the drying agent.

[0051] Preferably, the barrel 11 is provided with a filter screen on the top of the drying agent, which can intercept dust particles with a diameter greater than 10 μm in the air, thereby achieving the effect of purifying the air.

[0052] Preferably, the double-barrel air dryer further comprises a valve body reinforcing plate 8, and the left valve body 301, the middle valve body 302 and the right valve body 303 are all connected to the valve body reinforcing plate 8, thereby making the overall connection more firm.

[0053] The above embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it cannot be understood as the limitation of the scope of the present application. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which all belong to the protection scope of the present application.

Claims

1. A double-cylinder air dryer, characterized in that, include: The assembly includes a first drying cylinder, a second drying cylinder, and valves connected to the bottom of the first and second drying cylinders. Both the first drying cylinder and the second drying cylinder include a cylinder body and a gas conduit disposed inside the cylinder body. The cylinder body is equipped with a drying unit, and the top end of the gas conduit is provided with a vent hole communicating with the inside of the cylinder body. The valve assembly contains a connecting channel and valves. The connecting channel includes a main air intake channel, a first air intake channel, a second air intake channel, a first regeneration exhaust channel, a second regeneration exhaust channel, a main air outlet channel, a first air exchange channel, and a second air exchange channel. The outer wall of the valve assembly has an air inlet connecting to the main air intake channel and an air outlet connecting to the main air outlet channel. The first end of the first air intake channel is connected to the main air intake channel, and the second end is connected to the bottom of the first drying cylinder. The first end of the second air intake channel is connected to the main air intake channel, and the second end is connected to the bottom of the second drying cylinder. A portion of the first air intake channel also passes through the first regeneration exhaust channel. A first regeneration exhaust port is connected to the outer wall of the valve assembly. A portion of the second air inlet channel is also connected to the second regeneration exhaust port on the outer wall of the valve assembly via the second regeneration exhaust channel. The first end of the first air exchange channel is connected to the main air outlet channel, and the second end is connected to the bottom end of the gas conduit of the first drying cylinder. The first end of the second air exchange channel is connected to the main air outlet channel, and the second end is connected to the bottom end of the gas conduit of the second drying cylinder. The first air exchange channel also has a first throttling orifice near its first end, which is connected to the main air outlet channel. The second air exchange channel also has a second throttling orifice near its first end, which is connected to the main air outlet channel. The valve includes a first ball valve core, a second ball valve core, a first solenoid valve, and a second solenoid valve. The first ball valve core is movably disposed in a preset position in the main air intake channel to alternately block the first end of the first air intake channel and the first end of the second air intake channel. The second ball valve core is movably disposed in a preset position in the main air outlet channel to alternately block the first end of the first air exchange channel and the first end of the second air exchange channel. The first solenoid valve is used to open or close the first regenerative exhaust channel, and the second solenoid valve is used to open or close the second regenerative exhaust channel.

2. The dual-cylinder air dryer according to claim 1, characterized in that: The first solenoid valve and the second solenoid valve are connected to a time relay, and the time relay periodically changes the state of the first solenoid valve and the second solenoid valve according to a set time.

3. The dual-cylinder air dryer according to claim 1, characterized in that: The valve assembly includes a left valve body, a middle valve body, and a right valve body assembled in sequence. The first drying cylinder is connected to the left valve body, and the second drying cylinder is connected to the right valve body. The first air intake channel, the first regeneration exhaust channel, and the first air exchange channel are all formed in the left valve body, and the second air intake channel, the second regeneration exhaust channel, and the second air exchange channel are all formed in the right valve body. The main air intake channel and the main air outlet channel are jointly formed by the left valve body, the middle valve body, and the right valve body.

4. The dual-cylinder air dryer according to claim 1, characterized in that: A silencer is installed at both the first and second regeneration exhaust ports.

5. The dual-cylinder air dryer according to claim 3, characterized in that: It also includes a housing and a control panel. The valve assembly is installed in the housing, and the control panel is located on the front side of the housing and electrically connected to the first solenoid valve and the second solenoid valve.

6. The dual-cylinder air dryer according to claim 5, characterized in that: It also includes a drying cylinder fixing plate, on which the top ends of the first drying cylinder and the second drying cylinder are both fixed.

7. The dual-cylinder air dryer according to claim 6, characterized in that: Both the air inlet and the air outlet are configured to be two.

8. The dual-cylinder air dryer according to claim 7, characterized in that: The drying unit is a desiccant disposed inside the cylinder, and a support mesh for supporting the desiccant is provided at the bottom of the cylinder.

9. The dual-cylinder air dryer according to claim 8, characterized in that: The cylinder is equipped with a filter screen located on top of the desiccant, which can intercept dust particles with a diameter greater than 10 μm in the air.

10. The dual-cylinder air dryer according to claim 9, characterized in that: It also includes a valve body reinforcing plate, on which the left valve body, the middle valve body and the right valve body are all connected.

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