Zero-gas-consumption helium adsorption type dryer

Abstract

The utility model discloses a zero gas consumption helium adsorption type dryer, which comprises a rack, a first adsorption tower body, a second adsorption tower body, a filter assembly, an electric heater and an air cooler, the first adsorption tower body is arranged at the upper end of the rack, the second adsorption tower body is arranged on one side of the first adsorption tower body, and the air cooler is arranged on the other side of the first adsorption tower body. Filtering assemblies are arranged on two sides of the second adsorption tower body, an air cooler is arranged between the first adsorption tower body and the second adsorption tower body, the filtering assemblies are connected with the first adsorption tower body and the second adsorption tower body, the adsorption tower bodies and the second adsorption tower body are respectively connected with an electric heater, and the electric heater is connected with an air outlet pipe. According to the utility model, a micro-heat regeneration technology is adopted, part of compressed air is consumed, heated gas is fully utilized to regenerate an adsorbent, the best energy-saving effect is achieved, and through the arrangement of the filtering assembly, free particles can be effectively filtered and separated, the adsorbent is protected from being impacted and polluted by liquid water, and the service life of the adsorbent is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of air drying, in particular to a zero-air-consumption helium adsorption dryer. Background Art

[0002] By using the difference in volume between water molecules and air molecules, the saturated compressed gas is filtered by a special molecular sieve for gas purification to remove saturated water vapor in the compressed gas. The water molecules can be easily adsorbed inside the molecular sieve particles, and then the molecular sieve is restored by a regeneration method, and the dew point of the compressed gas can easily reach -40°C.

[0003] The adsorption dryer in the prior art includes a first adsorption barrel and a second adsorption barrel. A first valve, a second valve, a third valve, and a fourth valve are connected between the air inlets and outlets of the first adsorption barrel and the second adsorption barrel through ventilation pipes. A fifth valve, a sixth valve, a seventh valve, and an eighth valve are connected between the air outlets and inlets of the first adsorption barrel and the second adsorption barrel through ventilation pipes. A ninth valve and a tenth valve are connected between the seventh valve and the eighth valve through a ventilation pipe. The tenth valve is connected to a blower through a ventilation pipe, and the blower is connected to a heat exchanger through a ventilation pipe.

[0004] However, the adsorption dryer in the prior art cannot filter impurities in the gas, resulting in impurities easily adhering to the adsorbent in the adsorption barrel, reducing the adsorption capacity of the adsorbent and affecting the drying effect of the gas. Summary of the Utility Model

[0005] The purpose of the utility model is to provide a zero-air-consumption helium adsorption dryer to solve the above technical problems.

[0006] The technical solution adopted by the utility model is as follows:

[0007] A zero-air-consumption helium adsorption dryer includes a frame, a first adsorption tower body, a second adsorption tower body, a filtering component, an electric heater, and an air cooler. The first adsorption tower body is arranged at the upper end of the frame, the second adsorption tower body is arranged on one side of the first adsorption tower body, the air cooler is arranged on the other side of the first adsorption tower body, the filtering components are arranged on both sides of the second adsorption tower body, and the air cooler is arranged between the first adsorption tower body and the second adsorption tower body. Among them, the air cooler is connected to the filtering component, the filtering component is connected to the first adsorption tower body and the second adsorption tower body, the first adsorption tower body and the second adsorption tower body are respectively connected to the electric heater, and the electric heater is connected to an air outlet pipe.

[0008] Preferably, it further includes a dust removal filter, and the air outlet pipe is connected to the first air inlet of the dust removal filter.

[0009] Preferably, a gas storage buffer tank is further included. The gas storage buffer tank is provided on the frame. The air cooler is connected to the first air inlet of the gas storage buffer tank, and the air outlet of the gas storage buffer tank is connected to the filtration assembly.

[0010] As a further preference, the filtration assembly includes a high-pressure pre-filter and a high-pressure ultra-fine filter. The high-pressure pre-filter and the high-pressure ultra-fine filter are arranged on both sides of the second adsorption tower body. The air outlet of the gas storage buffer tank is connected to the first air inlet of the high-pressure pre-filter. The air outlet of the high-pressure pre-filter is connected to the first air inlet of the high-pressure ultra-fine filter. The air outlet of the high-pressure ultra-fine filter is connected to the first adsorption tower body and the second adsorption tower body through a first pipeline assembly.

[0011] As a further preference, a plurality of vent valves and a plurality of inlet valves are arranged on the first pipeline assembly.

[0012] As a further preference, a water collecting bucket is further included. The water collecting bucket is arranged on the frame, and the water inlet of the water collecting bucket is connected to the air cooler.

[0013] As a further preference, a filter pressure reducing valve is further included. The filter pressure reducing valve is connected to a two-position five-way pneumatic solenoid valve.

[0014] As a further preference, a drain pipe is further included. The water outlet of the water collecting bucket is connected to the drain pipe. A drain valve is arranged on the drain pipe. The second water inlet of the dust removal filter is connected to the drain pipe.

[0015] The above technical solution has the following advantages or beneficial effects:

[0016] (1) In the present utility model, the micro-heat regeneration technology is adopted, consuming a part of the compressed gas, and fully utilizing the heated gas for adsorbent regeneration to achieve the best energy-saving effect.

[0017] (2) In the present utility model, through the adsorption of the first adsorption tower body and the heating regeneration of the second adsorption tower body, or the adsorption of the second adsorption tower body and the heating regeneration of the first adsorption tower body, it is possible to make the dryer continuously output clean and dry gas, improving the working efficiency.

[0018] (3) In the present utility model, through the arrangement of the filtration assembly, it is possible to effectively filter and separate free particles, protecting the adsorbent from being impacted, polluted by liquid water and oil, and extending the service life of the adsorbent.

[0019] (4) In the present utility model, through the arrangement of the dust removal filter, it is possible to effectively remove the secondary pollution caused by the shedding of adsorbent powder during the drying process. Description of the Drawings

[0020] Figure 1 It is the front view of the zero-air-consumption helium adsorption dryer in the present utility model;

[0021] Figure 2 It is the rear view of the zero-air-consumption helium adsorption dryer in the present utility model;

[0022] Figure 3 It is the three-dimensional view of the zero-air-consumption helium adsorption dryer in the present utility model Figure 1 ;

[0023] Figure 4 It is the three-dimensional view of the zero-air-consumption helium adsorption dryer in the present utility model Figure 2 ;

[0024] Figure 5 It is the top view of the zero-air-consumption helium adsorption dryer in the present utility model;

[0025] Figure 6 It is the bottom view of the zero-air-consumption helium adsorption dryer in the present utility model;

[0026] Figure 7 It is the schematic diagram of the zero-air-consumption helium adsorption dryer in the present utility model.

[0027] In the figure: 1, frame; 2, first adsorption tower body; 3, second adsorption tower body; 4, electric heater; 5, air cooler; 6, dust removal filter; 7, gas storage buffer tank; 8, high-pressure pre-filter; 9, high-pressure ultra-fine filter; 10, first pipeline assembly; 11, water collection bucket; 12, filter pressure reducing valve; 13, drain pipe; 14, two-position five-way pneumatic solenoid valve; 15, pneumatic valve; 16, pneumatic actuator. Specific embodiments

[0028] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0029] In the description of the present utility model, it should be noted that when terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. appear, the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, when terms such as "first", "second", "third" appear, they are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, when terms such as "installation", "connection", "coupling" are used, they should be understood in a broad sense. For example, it 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 directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0031] Figure 1 is the front view of the zero-air-consumption helium adsorption dryer in the present utility model; Figure 2 is the rear view of the zero-air-consumption helium adsorption dryer in the present utility model; Figure 3 is the three-dimensional Figure 1 ; Figure 4 is the three-dimensional Figure 2 ; Figure 5 is the top view of the zero-air-consumption helium adsorption dryer in the present utility model; Figure 6 is the bottom view of the zero-air-consumption helium adsorption dryer in the present utility model; Figure 7 is the schematic diagram of the zero-air-consumption helium adsorption dryer in the present utility model. Please refer to Figures 1 to 7As shown, a preferred embodiment is shown, and a zero-gas-consumption helium adsorption dryer is shown, including a frame 1, a first adsorption tower body 2, a second adsorption tower body 3, a filter assembly, an electric heater 4 and an air cooler 5. The upper end of the frame 1 is provided with a first adsorption tower body 2, one side of the first adsorption tower body 2 is provided with a second adsorption tower body 3, the other side of the first adsorption tower body 2 is provided with an air cooler 5, both sides of the second adsorption tower body 3 are provided with a filter assembly, and an air cooler 5 is provided between the first adsorption tower body 2 and the second adsorption tower body 3, wherein the air cooler 5 is connected to the filter assembly, the filter assembly is connected to the first adsorption tower body 2 and the second adsorption tower body 3, the first adsorption tower body 2 and the second adsorption tower body 3 are respectively connected to the electric heater 4, and the electric heater 4 is connected to the outlet pipe. In this embodiment, the inner bottoms of the first adsorption tower body 2 and the second adsorption tower body 3 are both provided with an adsorbent for drying helium, and the first adsorption tower body 2 and the second adsorption tower body 3 can alternately dry and adsorb, and the gas can be dried continuously without stopping and waiting, which can improve work efficiency. By setting the filter assembly, impurities in the gas can be filtered in advance to prevent impurities in the gas from adhering to the adsorbent or contaminating the adsorbent. After passing through the air cooler 5, the gas enters the filter assembly for filtration, then enters the first adsorption tower body 2 for drying, and then is discharged through the outlet pipe.

[0032] See also Figure 7 As shown, the air outlets of the first adsorption tower body 2 and the second adsorption tower body 3 are connected to the heater and the air outlet pipe through a pipe, and the heater is also connected to the air outlet pipe through a pipe, and the intersections between the pipes can be connected by a three-way joint. The working steps in this embodiment are mainly divided into 6 steps, including drying and adsorbing the first adsorption tower body 2, heating and regenerating the second adsorption tower body 3; drying and adsorbing the first adsorption tower body 2, blowing and regenerating the second adsorption tower body 3; drying and adsorbing the first adsorption tower body 2, pressurizing the second adsorption tower body 3; drying and adsorbing the second adsorption tower body 3, heating and regenerating the first adsorption tower body 2; drying and adsorbing the second adsorption tower body 3, blowing and regenerating the first adsorption tower body 2; drying and adsorbing the second adsorption tower body 3, and pressurizing the first adsorption tower body 2.

[0033] Further, as a preferred embodiment, it also includes a dust removal filter 6, and the air outlet pipe is connected to the first air inlet of the dust removal filter 6. Figure 7 and Figure 3 As shown, the air outlet pipe is connected to the dust filter 6, which can effectively remove the secondary pollution caused by the falling of the adsorbent powder during the drying process. The clean gas after dust removal can be discharged from the exhaust port of the dust filter 6 for use by users.

[0034] Further, as a preferred embodiment, it further includes a gas storage buffer tank 7. The gas storage buffer tank 7 is provided on the frame 1. The air cooler 5 is connected to the first air inlet of the gas storage buffer tank 7, and the air outlet of the gas storage buffer tank 7 is connected to the filtration assembly. After passing through the air cooler 5, it can be stored and pressurized in the gas storage buffer tank 7, enabling the gas to quickly enter the filtration assembly.

[0035] Further, as a preferred embodiment, the filtration assembly includes a high-pressure pre-filter 8 and a high-pressure ultra-fine filter 9. The high-pressure pre-filter 8 and the high-pressure ultra-fine filter 9 are arranged on both sides of the second adsorption tower body 3. The air outlet of the gas storage buffer tank 7 is connected to the first air inlet of the high-pressure pre-filter 8, the air outlet of the high-pressure pre-filter 8 is connected to the first air inlet of the high-pressure ultra-fine filter 9, and the air outlet of the high-pressure ultra-fine filter 9 is connected to the first adsorption tower body 2 and the second adsorption tower body 3 through the first pipeline assembly 10. Among them, the provided high-pressure pre-filter 8 can filter out solid and liquid impurities in the compressed gas, and the provided high-pressure ultra-fine filter 9 can further filter the gas to remove particulate impurities and oil in the gas, avoiding adhesion to the adsorbent. Among them, the structure of the first pipeline assembly 10 can be referred to Figure 3 , Figure 4 and Figure 6 as shown. A number of vent valves and a number of intake valves are also provided on the first pipeline assembly 10, enabling the gas or clean compressed gas to selectively enter the first adsorption tower body 2 or the second adsorption tower body 3, enabling the alternating operation of the first adsorption tower body 2 and the second adsorption tower body 3.

[0036] Further, as a preferred embodiment, it further includes a water collecting bucket 11. The water collecting bucket 11 is arranged on the frame 1, and the water inlet of the water collecting bucket 11 is connected to the air cooler 5. Refer to Figure 4 and Figure 7 as shown. The water inlet of the water collecting bucket 11 is also connected to the high-pressure pre-filter 8 and the high-pressure ultra-fine filter 9. One-way valves are provided on the pipelines connecting the high-pressure pre-filter 8 and the high-pressure ultra-fine filter 9 to the water collecting bucket 11. After the one-way valves are opened, the water, solid particles and oil in the high-pressure pre-filter 8 and the high-pressure ultra-fine filter 9 can enter the water collecting bucket 11.

[0037] Further, as a preferred embodiment, it further includes a filter pressure reducing valve 12. The filter pressure reducing valve 12 is connected to a two-position five-way pneumatic solenoid valve 14. The two-position five-way pneumatic solenoid valve 14 is connected to a pneumatic actuator 16. The pneumatic actuator 16 is connected to a pneumatic valve 15. The pneumatic valve 15 is connected to the corresponding first adsorption tower body 2 or second adsorption tower body 3. The external clean compressed gas can be decompressed by the filter pressure reducing valve and enter the pneumatic actuator 16 through the two-position five-way solenoid valve 14 to control the switching of the pneumatic valve 15.

[0038] Further, as a preferred embodiment, it further includes a drain pipe 13. The water outlet of the water collecting bucket 11 is connected to the drain pipe 13. A drain valve is provided on the drain pipe 13. The second water inlet of the dust removal filter 6 is connected to the drain pipe 13. The drain pipe 13 is used to discharge the waste water in the water collecting bucket 11, and the water in the dust removal filter 6 can also be discharged into the drain pipe 13 and discharged by the drain pipe 13. A check valve is also provided on the pipe connecting the drain pipe 13 and the dust removal filter 6.

[0039] In this embodiment, refer to Figure 7 As shown, check valves, regulating valves, two-position five-way solenoid valves, vent valves, intake valves, regeneration valves, regeneration check valves, outlet valves, intake shut-off valves, and bypass valves are selectively provided on the pipes of the entire system.

[0040] In this embodiment, the first adsorption tower body 2 is used for adsorption and the second adsorption tower body 3 is used for regeneration as an example for illustration.

[0041] First, helium gas enters the gas storage buffer tank 7 for storage and pressurization after passing through the air cooler 5, enters the first adsorption tower body 2 after passing through the high-pressure pre-filter 8 and the high-pressure ultra-fine filter 9, and contacts the adsorbent in the first adsorption tower body 2 to achieve drying of the gas. Then it enters the dust removal filter 6 after passing through the check valve (V7) to complete the adsorption process. At this time, the vent valve (V4) is opened, and then the electric heater 4 is started. The heating temperature range is set at 40-200 °C, and the heating temperature is adjustable. After reaching the set heating time, the heating is completed, and the rest of the valves are in the closed state. At this time, the drying adsorption of the first adsorption tower body 2 and the heating regeneration process of the second adsorption tower body 3 are completed.

[0042] After the heating is completed, since the adsorbent temperature inside the second adsorption tower body 3 is relatively high and does not have good adsorption capacity, a part of the finished gas is needed to cool it down by cold blowing. During this period, the electric heater 4 can be turned off, and the rest of the valve parts remain in place. After reaching the set time, the cold blowing ends. At this time, the drying adsorption of the first adsorption tower body 2 and the cold blowing regeneration process of the second adsorption tower body 3 are completed.

[0043] Then the vent valve (V4) is closed. After pressurization, the gas slowly enters the second adsorption tower body 3 through the regeneration valve (V6). After the pressurization is completed, it remains in the original state (the pressurization time at different gears is different, and the purpose is to achieve maximum energy saving), so as to complete the drying adsorption of the first adsorption tower body 2 and the pressurization process of the second adsorption tower body 3. In the adsorption drying stage, the gas enters from the bottom of the adsorption tower body, and in the adsorption regeneration stage, the gas enters from the top of the adsorption tower body.

[0044] While the second adsorption tower body 3 adsorbs, the regeneration principle of the first adsorption tower body 2 is the same as that of the first adsorption tower body 2 adsorbing and the second adsorption tower body 3 regenerating. The corresponding valves can be controlled to switch through an external PLC controller to realize the adsorption of the second adsorption tower body 3.

[0045] The dryer in this embodiment has an alarm function. When the intake air pressure at the filter pressure reducing valve 12 is too low, the filter will enter the low-pressure alarm state, and at this time, the pneumatic valve 15 opens to ensure the smoothness of the gas circuit of the entire system. A pressure gauge is provided at the filter pressure reducing valve 12, and the alarm pressure value can be set.

[0046] In this embodiment, stainless steel mesh partitions are provided at the bottoms inside the first adsorption tower body 2 and the second adsorption tower body 3, so that there is a certain space at the bottom of the adsorption tower body. When the gas enters the adsorption tower body, it can not only generate a diffusion air flow to make it uniform and prevent larger particles of adsorbent from escaping from the adsorption tower body, but also has the effect of reducing the speed to increase the contact time with the adsorbent. Moreover, this design has the effect of preventing the adsorbent at the bottom of the adsorption tower body from getting damp.

[0047] The above are only the preferred embodiments of the present invention, and do not limit the implementation manners and protection scope of the present invention. For those skilled in the art, it should be realized that any equivalent replacement and obvious changes made by using the description and drawings of the present invention should be included in the protection scope of the present invention.

Claims

1. A zero gas consumption helium adsorption dryer, characterized in that: It includes a frame, a first adsorption tower body, a second adsorption tower body, a filter assembly, an electric heater and an air cooler, wherein the first adsorption tower body is provided at the upper end of the frame, the second adsorption tower body is provided at one side of the first adsorption tower body, the air cooler is provided at the other side of the first adsorption tower body, the filter assembly is provided at both sides of the second adsorption tower body, and the air cooler is provided between the first adsorption tower body and the second adsorption tower body, wherein the air cooler is connected to the filter assembly, the filter assembly is connected to the first adsorption tower body and the second adsorption tower body, the first adsorption tower body and the second adsorption tower body are respectively connected to the electric heater, and the electric heater is connected to the air outlet pipe.

2. The zero gas consumption helium adsorption dryer according to claim 1, characterized in that: A dust removal filter is also included, and the air outlet pipe is connected to the first air inlet of the dust removal filter.

3. The zero gas consumption helium adsorption dryer according to claim 1, characterized in that: It also includes an air storage cache tank, which is arranged on the frame, the air cooler is connected to the first air inlet of the air storage cache tank, and the air outlet of the air storage cache tank is connected to the filter assembly.

4. The zero gas consumption helium adsorption dryer according to claim 3, characterized in that: The filtering assembly includes a high-pressure pre-filter and a high-pressure ultra-fine filter, and the high-pressure pre-filter and the high-pressure ultra-fine filter are arranged on both sides of the second adsorption tower body, the air outlet of the gas storage buffer tank is connected to the first air inlet of the high-pressure pre-filter, the air outlet of the high-pressure pre-filter is connected to the first air inlet of the high-pressure ultra-fine filter, and the air outlet of the high-pressure ultra-fine filter is connected to the first adsorption tower body and the second adsorption tower body through the first pipeline assembly.

5. The zero gas consumption helium adsorption dryer according to claim 4, characterized in that: The first pipeline assembly is provided with a plurality of vent valves and a plurality of air intake valves.

6. The zero gas consumption helium adsorption dryer according to claim 2, characterized in that: It also includes a water collecting bucket, which is arranged on the frame, and a water inlet of the water collecting bucket is connected to the air cooler.

7. The zero gas consumption helium adsorption dryer according to claim 4, characterized in that: It also includes a filter pressure reducing valve, which is connected to a two-position five-way pneumatic solenoid valve.

8. The zero gas consumption helium adsorption dryer according to claim 6, characterized in that: It also includes a drain pipe, the water outlet of the water collecting bucket is connected to the drain pipe, a drain valve is provided on the drain pipe, and the second water inlet of the dust removal filter is connected to the drain pipe.

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