Dryer compact in structure and convenient to maintain

Abstract

The invention discloses a dryer compact in structure and convenient to maintain, which comprises a single-tower dryer for drying air and an air path plate, the air inlets and the air outlets of the single-tower dryer and the air path plate are interconnected, specifically, the downstream of the air path of the air outlet of the single-tower dryer is divided into two branches, the first branch is connected with the air outlet joint of the air path plate, and the second branch is connected with the air outlet joint of the air path plate. The second branch is connected to the control port of the blow-down valve of the single-tower dryer after sequentially passing through the electromagnetic valve and the control port joint; a regeneration branch is arranged at the upstream of a gas path of a gas outlet of the single-tower dryer, and is connected to a regeneration port joint of the gas path plate through a regeneration port of the single-tower dryer; wherein a gas inlet of the gas circuit board is connected with a gas source, on-off of the electromagnetic valve is controlled through the air supply state of the gas source, a gas outlet connector of the gas circuit board is connected with a vehicle buffering air cylinder and / or other gas equipment, and a regeneration port connector of the gas circuit board is connected with an external reverse blowing air cylinder. The problems that high-early-stage pipeline connection is complex, the size is large, and later-stage maintenance operation is complex are solved.

Description

Technical Field

[0001] The present invention belongs to the technical field of dryers, and in particular relates to a dryer which is compact and easy to maintain and is used in conjunction with a single-tower dryer, and a working method thereof. Background Art

[0002] Single tower dryer is a common drying equipment, widely used in truck and bus braking systems and rail vehicle pantograph systems. It can adsorb and dry the compressed air from the air compressor and filter it to prevent pipeline corrosion and increase system reliability.

[0003] There are several interfaces on the single tower dryer, including air inlet, air outlet, regeneration port and control port. Therefore, to ensure the normal operation of the single tower dryer, it is also necessary to connect the pipeline and control valve at the dryer interface to meet the operation and control requirements of the dryer.

[0004] Existing single-tower dryers usually rely on sections of air pipes to connect various joints and control valves into a module to achieve their functions. This not only makes the pipe connection complicated, but also requires pipe joints and conversion joints at each connection, increasing the risk of leakage during use. At the same time, during installation, each joint and control valve needs to reserve space for rotation, resulting in a large volume of the entire module, which cannot be installed and used in a small space. In addition, during later maintenance, when replacing joints and control valves, a large number of pipes need to be disassembled, which is complicated to operate. Summary of the invention

[0005] The technical problem to be solved by the present invention is that the existing technology has complicated pipe connections for dryers, and each connection requires a pipe joint and a conversion joint, which increases the risk of leakage during use. In addition, the early pipe connections are complicated, the volume is large, and the later maintenance and repair operations are complicated. The present invention provides a dryer with a compact structure and easy maintenance, which can solve the above problems.

[0006] Technical solution:

[0007] A dryer with a compact structure and easy maintenance, comprising a single-tower dryer 1 for drying air and an air circuit board 2, wherein the air inlet and the air outlet of the single-tower dryer 1 and the air circuit board 2 are interconnected. Specifically, the air circuit downstream of the air outlet 104 of the single-tower dryer 1 is divided into two branches, the first branch is connected to the air outlet connector 211 of the air circuit board 2, and the second branch is connected to the control port 102 of the drain valve 105 of the single-tower dryer 1 through the solenoid valve 212 and the control port connector 213 in sequence; a regeneration branch is provided upstream of the air circuit of the air outlet 104 of the single-tower dryer 1, and is connected to the regeneration port connector 204 of the air circuit board 2 through the regeneration port 103 of the single-tower dryer 1;

[0008] Among them, the air inlet of the air circuit plate 2 is connected to the air source, and the on and off of the solenoid valve 212 is controlled by the air supply state of the air source. The air outlet connector 211 of the air circuit plate 2 is connected to the vehicle buffer air cylinder and / or other air-using equipment, and the regeneration port connector 204 of the air circuit plate 2 is connected to the external back-blowing air cylinder.

[0009] Preferably, a test connector 208 and a safety valve 206 are provided on the gas circuit board 2, and the test connector 208 and the safety valve 206 are connected to the gas circuit downstream of the gas outlet 104 of the single-tower dryer 1. The test connector 208 provides a convenient test and maintenance interface, and the safety valve 206 can prevent damage to components. The test connector 208 can be connected to an external pressure gauge during module maintenance and testing, so as to facilitate testing and calibration of the opening pressure value of the safety valve 206.

[0010] Preferably, a minimum pressure valve 209 is provided between the outlet of the test connector 208 and the gas outlet connector 211 .

[0011] Preferably, a one-way valve 210 is provided between the minimum pressure valve 209 and the air outlet connector 211 .

[0012] Preferably, the dryer further comprises a filter. A filter is provided in the gas circuit downstream of the drying module of the single-tower dryer 1 , and a filter 207 is also provided in the gas circuit downstream of the gas outlet 104 of the single-tower dryer 1 .

[0013] Preferably, the air inlet of the single-tower dryer 1 includes a dryer air inlet (101), and the air inlet of the air circuit plate 2 includes a first air circuit plate air inlet 201 and a second air circuit plate air inlet 202, and the first air circuit plate air inlet 201, the second air circuit plate air inlet 202 and the dryer air inlet (101) are connected via an air inlet connector 203 to achieve interconnection between the air inlets.

[0014] The present invention also discloses a working method of a dryer with a compact structure and easy maintenance. Based on the above-mentioned dryer, the air inlet of the air circuit plate 2 is connected to an external air source. When the air source supplies air, the solenoid valve 212 is energized, and the external air source enters the single-tower dryer 1 and is dried. A part of the air enters the external back-blowing air cylinder through the regeneration branch for storage, and the other part enters the air circuit plate 2 and is stored in the vehicle buffer air cylinder through the air outlet joint 211 for use by subsequent air-using equipment; when the air source stops supplying air, the solenoid valve 212 loses power, and the gas stored in the external back-blowing air cylinder flows to the control port 102 of the single-tower dryer 1 through the second branch, and the drain valve 105 of the single-tower dryer 1 is opened. At the same time, the gas stored in the external back-blowing air cylinder back-blows the internal desiccant of the single-tower dryer 1, and blows out the moisture inside the desiccant through the drain valve 105.

[0015] Preferably, when the air source is supplying air, the solenoid valve 212 is energized to cut off the air path between the outlet of the filter 207 and the control port 102 of the single-tower dryer 1. At this time, there is no compressed air at the control port 102, and the drain valve 105 of the single-tower dryer 1 is closed; the external air source enters the air inlet 101 of the single-tower dryer 1 through the air inlet of the air circuit board 2. After being dried inside the single-tower dryer 1, a part of the dry compressed air enters the external back-blowing air cylinder for storage through the regeneration port 103 and the regeneration port connector 204 of the single-tower dryer 1, and the remaining dry compressed air enters the internal pipeline of the air circuit board 2 through the air outlet 104 and the air outlet connector 205 of the single-tower dryer 1. After being filtered by the filter 207, it flows to the air outlet connector 211 through the minimum pressure valve 209, and then is stored in the vehicle buffer air cylinder for subsequent use by air-using equipment.

[0016] Preferably, when the air source stops supplying air, the solenoid valve 212 loses power, and the air path between the outlet of the filter 207 and the control port 102 of the single-tower dryer 1 is connected. At this time, the dry compressed air stored in the external back-blowing air cylinder passes through the regeneration port connector 204, the regeneration port 103 of the single-tower dryer 1, the air outlet 104 of the single-tower dryer 1, the air outlet connector 205 and the filter 207, and then passes through the solenoid valve 212, the control port connector 213 and the air pipe 214 to flow to the control port 102 of the single-tower dryer 1, and the drain valve 105 of the single-tower dryer 1 is opened for draining; at this time, the dry compressed air stored in the external back-blowing air cylinder back-blows the desiccant inside the single-tower dryer 1 through the regeneration port connector 204 and the regeneration port 103 of the single-tower dryer 1, blows out the moisture inside the desiccant through the drain valve 105, and regenerates the desiccant until the compressed air in the back-blowing air cylinder is exhausted.

[0017] The beneficial effects of the present invention are:

[0018] (1) In the dryer disclosed in the present invention, each connection joint and control valve are installed on the gas circuit board, and the gas circuit is arranged inside the gas circuit board. The installation operation is simple, the gas circuit joints are few, and the risk of leakage during use is reduced;

[0019] (2) In the dryer disclosed in the present invention, the larger control valve in the gas manifold is pressed by screws, and the smaller valve is connected to the gas manifold by threads. The position arrangement is compact, which greatly reduces the volume of the entire module;

[0020] (3) The dryer disclosed in the present invention can be individually disassembled and replaced for each control valve in the later maintenance, without disassembling other control valves and pipelines. The operation is simple and fast, and maintenance is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the embodiments are briefly introduced below.

[0022] Figure 1This is a gas circuit principle diagram of a gas circuit board module for a dryer according to an embodiment of the present invention;

[0023] Figure 2 This is a schematic diagram of a dryer, gas circuit board interface and structure according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the connection between the dryer and the gas circuit board module of an embodiment of the present invention.

[0025] Figure markings: 1-single tower dryer, 101-dryer air inlet, 102-control port, 103-regeneration port, 104-air outlet, 105-drain valve, 2-air circuit board, 201-first air inlet of air circuit board, 202-second air inlet of air circuit board, 203-air inlet connector, 204-regeneration port connector, 205-first air outlet connector, 206-safety valve, 207-filter, 208-test connector, 209-minimum pressure valve, 210-check valve, 211-second air outlet connector, 212-solenoid valve, 213-control port connector, 214-air pipe. DETAILED DESCRIPTION

[0026] The embodiments of the present invention provide a method for making the purpose, technical solution and advantages of the present invention more clear, and the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0027] Example 1

[0028] like Figure 1-3 As shown, a dryer with a compact structure and easy maintenance provided by an embodiment of the present invention includes a single-tower dryer and an air circuit board, the connecting joints and the solenoid valves are installed on the air circuit board, the air circuit board has a built-in air circuit, the larger valve is pressed by screws, and the smaller valve is connected to the air circuit board by threads. The innovative design of the dryer disclosed in the present application is embodied in the integrated combination of the single-tower dryer 1 and the air circuit board 2. The dryer disclosed in the present application not only realizes the efficient interconnection between the air inlet and the air outlet of the single-tower dryer 1 and the air circuit board 2, but also ensures the effective drying of the air through the built-in drying module of the single-tower dryer 1. In addition, a test connector 208 is provided on the air circuit board 2, and the test connector is directly connected to the control port 102 of the drain valve 105 of the single-tower dryer 1, thereby providing a convenient testing and maintenance interface and simplifying the daily inspection and troubleshooting process.

[0029] The present invention significantly reduces the installation space requirement through a compact design, and is particularly suitable for application scenarios with limited space. At the same time, the direct connection between the test connector 208 and the control port 102 of the drain valve 105 allows technicians to perform performance testing and drain operations without disassembling the equipment, greatly reducing maintenance costs and time.

[0030] The seamless connection between the single tower dryer 1 and the air manifold 2 reduces potential leakage points and improves the overall stability and reliability of the system. The built-in drying module ensures that the air entering the system can be fully dried, effectively preventing equipment corrosion or failure problems caused by excessive humidity. The modular design allows users to flexibly configure and expand system functions according to actual needs to adapt to different application scenarios and changes in demand.

[0031] The following introduces the single tower dryer and the gas circuit board and the gas circuit connection between them:

[0032] The single tower dryer 1 includes, in order of gas path, a dryer air inlet 101, a dryer, a filter and an air outlet 104, wherein a branch is provided between the dryer air inlet 101 and the dryer, and a drain valve 105 is provided on the branch. The drain valve is usually located at the bottom of the dryer or near a place where liquid is easily gathered, and is used to discharge these condensed water and impurities regularly to prevent them from entering the subsequent pipeline system or affecting the drying effect. Regularly opening the drain valve to discharge condensed water and impurities helps to keep the entire pneumatic system clean, reduce the risk of corrosion, and extend the service life of related equipment. The drain valve 105 has a control port 102. A branch is provided between the filter and the air outlet 104, and a regeneration port 103 is provided on the branch. The regeneration port 103 is used to introduce high-temperature dry air or other media, which flow through the desiccant layer in the drying tower and take away the moisture accumulated during the drying process, so that the desiccant has good hygroscopic properties again. By regularly regenerating the desiccant, it can be ensured that the dryer provides dry air stably for a long time, and the problem of air quality degradation due to desiccant failure can be avoided.

[0033] The air circuit board 2 has multiple valve ports, which are used to connect with the single-tower dryer 1 to achieve different air circuit connections. In this embodiment, the air circuit board 2 has two air inlets, both of which can be used as the compressed air inlet of the module, namely the first air inlet 201 of the air circuit board and the second air inlet 202 of the air circuit board, which are connected to the air inlet 101 of the dryer through the air inlet connector 203. According to the actual layout position during installation, you can choose to connect the first air inlet 201 of the air circuit board or the second air inlet 202 of the air circuit board, and then block the other air inlet with a plug, which is convenient for connecting the compressed air pipeline during installation. The air circuit board 2 has two air outlet connectors, namely the first air outlet connector 205 and the second air outlet connector 211. The first air outlet connector 205 is connected to the air outlet 103 of the single-tower dryer. The air circuit downstream of the first air outlet connector 205 is the safety valve 206 and the filter 207 in sequence. If the system is abnormal and the internal pressure of the unit is too high, the safety valve 206 automatically releases pressure to prevent damage to components. A test connector 208 is provided between the filter 207 and the minimum pressure valve 209 , and an external pressure gauge can be connected during module maintenance and testing to facilitate testing and calibration of the opening pressure value of the safety valve 206 .

[0034] The outlet of the filter 207 is divided into two branches: one branch is connected from the outlet of the filter 207 to the inlet of the minimum pressure valve 209, and the outlet of the minimum pressure valve 209 is connected to the air outlet connector 211 after passing through the one-way valve 210; the other branch is connected from the outlet of the filter 207 to the inlet of the solenoid valve 212, and the outlet of the solenoid valve 212 is connected to the control port 102 of the single tower dryer 1 through the control port connector 213 and the air pipe 214. The air outlet connector 211 is a modular air outlet, which can be connected to the vehicle buffer air cylinder and subsequent air-using equipment.

[0035] The gas circuit board 2 is also provided with a regeneration port connector 204, which is connected to the regeneration port 103 of the single-tower dryer 1 through the internal pipeline of the gas circuit board 2. The regeneration port connector 204 is directly connected to the external back-blowing air cylinder for back-blowing and regenerating the desiccant inside the single-tower dryer 1.

[0036] Among them, the one-way valve 210, the filter 207, the solenoid valve 212, the minimum pressure valve 209 and other components are integrated and installed on the gas circuit board 2. The gas circuit board 2 is provided with pipelines inside to ensure the correct connection relationship of each control valve. The pipelines are connected inside the gas circuit board without joints, which reduces the risk of pipeline leakage. At the same time, the various control valves are arranged compactly and do not interfere with each other, which greatly reduces the external dimensions of the module. It is simple and quick to assemble the control valve, and it can prevent missing or wrong installation. During later use and maintenance, the faulty control valve can be replaced separately, which is simple and quick to operate, convenient for maintenance, and improves the efficiency of inspection and maintenance.

[0037] It should be noted that this application is not limited to Figure 2-3The configuration shown, as long as the module positions can meet the requirements of gas path interconnection, should be within the protection scope of this application.

[0038] Example 2

[0039] This embodiment discloses a working method of a dryer with a compact structure and easy maintenance, which is based on the dryer in Example 1.

[0040] When this module is in use, an external air source is connected at the first air inlet 201 of the air circuit board or the second air inlet 202 of the air circuit board; the regeneration port connector 204 is connected to the external back-blowing air cylinder; the air outlet connector 211 is connected to the vehicle buffer air cylinder and subsequent air-using equipment. When the air source supplies air, the solenoid valve 212 is energized to cut off the air path between the filter 207 outlet and the control port 102 of the single-tower dryer 1. At this time, there is no compressed air at the control port 102, and the drain valve 105 of the single-tower dryer 1 is closed, and no sewage is discharged. External compressed air enters the air inlet 101 of the single-tower dryer 1 through the first air inlet 201 of the air circuit board or the second air inlet 202 of the air circuit board. After drying inside the single-tower dryer 1, a part of the dry compressed air enters the external back-blowing air cylinder for storage through the regeneration port 103 and the regeneration port connector 204 of the single-tower dryer 1. The remaining dry compressed air enters the internal pipeline of the air circuit board 2 through the air outlet 104 and the air outlet connector 205 of the single-tower dryer 1. Then, after being filtered by the filter 207, it flows to the air outlet joint 211 through the minimum pressure valve 209 and the one-way valve 210, and is then stored in the vehicle buffer air cylinder for subsequent use by air-using equipment.

[0041] When the air source stops supplying air, the solenoid valve 212 loses power, and the air path between the outlet of the filter 207 and the control port 102 of the single-tower dryer 1 is connected. At this time, the dry compressed air stored in the external back-blowing air cylinder passes through the regeneration port connector 204, the regeneration port 103 of the single-tower dryer 1, the air outlet 104 of the single-tower dryer 1, the air outlet connector 205 and the filter 207, and then flows to the control port 102 of the single-tower dryer 1 through the solenoid valve 212, the control port connector 213 and the air pipe 214, and the single-tower dryer 1 sewage valve 105 is opened for sewage discharge. At this time, the dry compressed air stored in the external back-blowing air cylinder back-blows the desiccant inside the single-tower dryer 1 through the regeneration port connector 204 and the regeneration port 103 of the single-tower dryer 1, blows out the moisture inside the desiccant through the sewage valve 105, and regenerates the desiccant until the compressed air in the back-blowing air cylinder is exhausted.

[0042] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A compact and easy-to-maintain dryer, characterized in that: The invention comprises a single-tower dryer (1) for drying air and an air path plate (2), wherein the air inlet and the air outlet of the single-tower dryer (1) and the air path plate (2) are interconnected. Specifically, The gas circuit downstream of the gas outlet (104) of the single-tower dryer (1) is divided into two branches, the first branch being connected to the gas outlet connector (211) of the gas circuit board (2), and the second branch being connected to the control port (102) of the sewage valve (105) of the single-tower dryer (1) through the solenoid valve (212) and the control port connector (213) in sequence; a regeneration branch is provided upstream of the gas circuit of the gas outlet (104) of the single-tower dryer (1), and is connected to the regeneration port connector (204) of the gas circuit board (2) through the regeneration port (103) of the single-tower dryer (1); The air inlet of the air circuit plate (2) is connected to an air source, and the on / off of the solenoid valve (212) is controlled by the air supply state of the air source; the air outlet connector (211) of the air circuit plate (2) is connected to a vehicle buffer air cylinder and / or other air-using equipment; and the regeneration port connector (204) of the air circuit plate (2) is connected to an external back-blowing air cylinder.

2. The compact and easy-to-maintain dryer according to claim 1, characterized in that: The gas circuit board (2) is provided with a test connector (208) and a safety valve (206). The test connector (208) and the safety valve (206) are connected to the gas circuit downstream of the gas outlet (104) of the single-tower dryer (1). The test connector (208) provides a convenient testing and maintenance interface, and the safety valve (206) can prevent components from being damaged.

3. The compact and easy-to-maintain dryer according to claim 2, characterized in that: A minimum pressure valve (209) is provided between the outlet of the test joint (208) and the air outlet joint (211).

4. The compact and easy-to-maintain dryer according to claim 3, characterized in that: A one-way valve (210) is provided between the search minimum pressure valve (209) and the gas outlet connector (211).

5. The compact and easy-to-maintain dryer according to claim 4, characterized in that: It also includes a filter. The filter is provided downstream of the gas path of the drying module of the single-tower dryer (1). A filter (207) is also provided downstream of the gas path of the gas outlet (104) of the single-tower dryer (1).

6. A compact and easy-to-maintain dryer according to any one of claims 1 to 5, characterized in that: The air inlet of the single-tower dryer (1) comprises a dryer air inlet (101), and the air inlet of the air circuit plate (2) comprises a first air circuit plate air inlet (201) and a second air circuit plate air inlet (202). The first air circuit plate air inlet (201), the second air circuit plate air inlet (202) and the dryer air inlet (101) are connected via an air inlet connector (203) to achieve interconnection between the air inlets.

7. A method for operating a compact and easy-to-maintain dryer, characterized in that: Based on the dryer as claimed in claim 5 or 6, the air inlet of the air path plate (2) is connected to an external air source, When the air source is supplying air, the solenoid valve (212) is energized, and the external air source enters the single-tower dryer (1) and undergoes drying treatment. A portion of the air enters the external back-blowing air cylinder through the regeneration branch for storage, and the other portion enters the air circuit board (2) and is stored in the vehicle buffer air cylinder through the air outlet connector (211) for subsequent use by air-using equipment; When the air source stops supplying air, the solenoid valve (212) loses power, the gas stored in the external back-blowing air cylinder flows to the control port (102) of the single-tower dryer (1) through the second branch, and the drain valve (105) of the single-tower dryer (1) opens. At the same time, the gas stored in the external back-blowing air cylinder back-blows the desiccant inside the single-tower dryer (1), blowing out the moisture inside the desiccant through the drain valve (105).

8. The operating method of a compact and easy-to-maintain dryer according to claim 7, characterized in that: When the air source is supplying air, the solenoid valve (212) is energized to cut off the air path between the filter (207) outlet and the single-tower dryer (1) control port (102). At this time, there is no compressed air at the control port (102), and the single-tower dryer (1) drain valve (105) is closed; the external air source enters the air inlet (101) of the single-tower dryer (1) through the air inlet of the air path plate (2), and after being dried inside the single-tower dryer (1), a portion of the dry compressed air enters the external back-blowing air cylinder through the regeneration port (103) and the regeneration port connector (204) of the single-tower dryer (1) for storage, and the remaining dry compressed air enters the internal pipeline of the air path plate (2) through the air outlet (104) and the air outlet connector (205) of the single-tower dryer (1), is filtered by the filter (207), flows to the air outlet connector 211 through the minimum pressure valve (209), and is then stored in the vehicle buffer air cylinder for subsequent use by air-using equipment.

9. The operating method of a compact and easy-to-maintain dryer according to claim 7, characterized in that: When the air source stops supplying air, the solenoid valve (212) loses power, and the air path between the filter (207) outlet and the control port (102) of the single-tower dryer (1) is connected. At this time, the dry compressed air stored in the external back-blowing air cylinder passes through the regeneration port connector (204), the regeneration port (103) of the single-tower dryer (1), the air outlet (104) of the single-tower dryer (1), the air outlet connector (205) and the filter (207), and then passes through the solenoid valve (212), the control port connector (213) and the air outlet connector (214). ) and the air pipe (214) and then flows to the control port (102) of the single-tower dryer (1), and the drain valve (105) of the single-tower dryer (1) is opened to discharge the waste; at this time, the dry compressed air stored in the external back-blowing air cylinder back-blows the desiccant inside the single-tower dryer (1) through the regeneration port joint (204) and the regeneration port (103) of the single-tower dryer (1), and the moisture inside the desiccant is blown out through the drain valve (105), and the desiccant is regenerated until the compressed air in the back-blowing air cylinder is exhausted.

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