Drying and filtering apparatus

Abstract

The present disclosure discloses a drying and filtering device. The filtering and drying device comprises a bearing seat body, an adsorption drying pipe and a refrigeration pipe. The bearing seat body comprises an upper adsorption air flow cavity at the upper end of the bearing seat body, an upper refrigeration air flow cavity and a lower adsorption air flow cavity at the lower end of the bearing seat body, and a lower refrigeration air flow cavity. The adsorption drying pipe is vertically arranged between the upper end and the lower end of the bearing seat body, and the adsorption drying pipe is in communication with the upper adsorption air flow cavity and the lower adsorption air flow cavity. The refrigeration pipe is vertically arranged between the upper end and the lower end of the bearing seat body, and the refrigeration pipe is in communication with the upper refrigeration air flow cavity and the lower refrigeration air flow cavity. The bearing seat body further comprises an air inlet guide cavity in communication with the refrigeration pipe and the adsorption drying pipe, so that the airflow cooled by the refrigeration pipe can enter the adsorption drying pipe through the air inlet guide cavity for adsorption drying.

Description

Technical Field

[0001] This disclosure relates to the field of air purification, and in particular to a drying and filtering device. Background Technology

[0002] Compressed air is an important power source in industrial manufacturing. Compressed air contains a large amount of moisture, which is currently mainly removed by adsorption dryers and refrigerated dryers.

[0003] Refrigerated dryers primarily cool compressed air from a high temperature to a low temperature, causing saturated water vapor to condense into liquid water. The water, separated by an air-water separator, is then discharged through a drain valve. To prevent water from freezing and clogging the pipes, the dew point temperature of a refrigerated dryer (the dew point temperature is the temperature at which air is cooled to saturation without changes in water vapor content or air pressure) is typically above zero degrees Celsius. Therefore, this method cannot completely eliminate the moisture problem in compressed air.

[0004] Adsorption dryers mainly work by adsorbing moisture under low temperature and high pressure and decomposing and regenerating it under high temperature and low pressure. They can effectively dry the moisture in compressed air. However, a pre-cooled refrigerated dryer is required to cool the compressed air. The pre-cooled refrigerated dryer is usually installed on the pipeline at the front end of the adsorption dryer, which takes up a large area.

[0005] Therefore, how to completely remove moisture from compressed air and reduce the overall size of the dryer has become a problem that the industry needs to solve. Summary of the Invention

[0006] To address the problems existing in related technologies, such as dryers failing to completely remove moisture or becoming too bulky to ensure complete moisture removal, this disclosure provides an integrated drying and filtration device.

[0007] This disclosure provides a drying and filtering apparatus, comprising:

[0008] The support body includes an upper adsorption airflow cavity and an upper cooling airflow cavity located at the upper end of the support body, and a lower adsorption airflow cavity and a lower cooling airflow cavity located at the lower end of the support body.

[0009] An adsorption drying tube is vertically disposed between the upper and lower ends of the support body, and the adsorption drying tube is connected to the upper adsorption airflow chamber and the lower adsorption airflow chamber.

[0010] A refrigeration pipe is vertically arranged between the upper and lower ends of the support body, and the refrigeration pipe is connected to the upper refrigeration airflow cavity and the lower refrigeration airflow cavity;

[0011] The support body also includes an air inlet guide cavity, which connects the refrigeration pipe and the adsorption drying pipe, so that the airflow cooled by the refrigeration pipe can enter the adsorption drying pipe through the air inlet guide cavity for drying.

[0012] Optionally, the drying and filtering device includes at least two sets of adsorption drying tubes, each set of adsorption drying tubes alternately performing adsorption and regeneration operations;

[0013] A set of adsorption drying tubes for adsorption is connected to another set of adsorption drying tubes for regeneration through a regeneration gas flow pipe, so that the regeneration gas flow from one set of adsorption drying tubes can enter the other set of adsorption drying tubes for purging and regeneration through the regeneration gas flow pipe.

[0014] The lower adsorption airflow chamber is provided with an exhaust port at its end, which is used to discharge the regenerated airflow after purging into the atmosphere.

[0015] Optionally, an air inlet sealing plate is provided at the outlet of the air inlet guide cavity near the adsorption drying tube, and an exhaust sealing plate is provided at the exhaust port.

[0016] When the adsorption drying tube is undergoing regeneration, the exhaust sealing plate moves away from the exhaust port under the drive of the cylinder, and the intake sealing plate closes the outlet of the intake guide cavity under the drive of the cylinder, so that the regenerated airflow is discharged through the exhaust port.

[0017] Optionally, the intake sealing plate and the exhaust sealing plate are connected by a connecting rod, which is connected to the cylinder. The connecting rod can move up and down under the drive of the cylinder to move the intake sealing plate and the exhaust sealing plate.

[0018] Optionally, the upper adsorption airflow cavity, the upper cooling airflow cavity, the lower adsorption airflow cavity, and the lower cooling airflow cavity extend along the lateral direction of the support body, and the air inlet guide cavity is located at the lower end of the support body and extends along the longitudinal direction of the support body.

[0019] Optionally, the refrigeration pipe is provided with a spirally wound cooling tube, and the drying and filtering device further includes:

[0020] Multiple condenser tubes are vertically arranged between the upper and lower ends of the support body. Each condenser tube contains a spirally coiled condenser tube. The condenser tubes are isolated from the upper refrigeration airflow chamber and the lower refrigeration airflow chamber.

[0021] A refrigerant compressor is fixed on the support body. The liquid inlet port of the refrigerant compressor is connected to the liquid outlet port of the cooling tube of the refrigeration pipe, and the liquid outlet port of the refrigerant compressor is connected to the liquid inlet port of the condensing tube. The refrigerant compressor is used to compress the refrigerant vaporized in the refrigeration pipe into a high-temperature and high-pressure liquid refrigerant and deliver it to the condensing tube of the condensing pipe.

[0022] A refrigerant filter, connected to the outlet end of the condenser tube of the condenser coil, is used to filter impurities in the liquid refrigerant output from the condenser tube of the condenser coil; and

[0023] A throttling device, which is connected to the refrigerant filter, is used to reduce the pressure of the low-temperature, high-pressure liquid refrigerant filtered by the refrigerant filter to a low-temperature, low-pressure liquid refrigerant, and then deliver the reduced-pressure low-temperature, low-pressure liquid refrigerant to the cooling capillary tube in the refrigeration pipe.

[0024] Optionally, the drying and filtering device further includes a condenser fan, which is located near the condenser tube for cooling the condenser tube;

[0025] The drying device includes at least two sets of adsorption drying tubes. Each set of adsorption drying tubes alternately performs adsorption and regeneration. Each set of adsorption drying tubes is connected to the corresponding condenser tube through a regeneration gas flow pipe. Part of the gas flow after being dried by the adsorption drying tube enters the condenser tube through the regeneration gas flow pipe to absorb heat. The gas flow after absorbing heat enters the adsorption drying tube that is undergoing regeneration through another regeneration gas flow pipe for purging and desorption.

[0026] The regeneration gas flow pipe is equipped with a flow regulating valve to regulate the flow rate of the regeneration gas flowing into the condenser pipe.

[0027] Optionally, the drying and filtering device includes multiple sets of condenser tubes, the condenser capillary tubes of the multiple sets of condenser tubes are connected in series or in parallel, and cooling water is introduced into at least one set of condenser tubes. The cooling water exchanges heat with the condenser capillary tubes to cool the refrigerant in the condenser capillary tubes.

[0028] Optionally, the cooling pipe is provided with a spirally wound cooling tube inside. The inlet end of the cooling tube is connected to the water inlet of the external cooling water, and the outlet end of the cooling tube is connected to the water outlet. The water that has exchanged heat with the airflow in the cooling pipe is discharged through the water outlet.

[0029] Optionally, the drying and filtering device further includes an air inlet filter and an air outlet filter respectively disposed on both sides of the support body;

[0030] The air intake filter connects the air intake port of the drying filter device and the upper cooling airflow chamber, so that the airflow passes through the air intake filter and then enters the cooling pipe through the upper cooling airflow chamber for cooling.

[0031] The exhaust filter connects the exhaust port of the drying filter and the upper adsorption airflow chamber, so that after the airflow is adsorbed and dried by the adsorption drying tube, it flows to the gas-using end through the upper adsorption airflow chamber and the exhaust port.

[0032] Optionally, a one-way air outlet valve seat is provided at the connection between the upper adsorption airflow chamber and the air outlet filter. The one-way air outlet valve seat is provided with a one-way sealing plate, a pull rod connected to the one-way sealing plate, and a one-way spring sleeved on the pull rod. When the airflow pressure in the upper adsorption airflow chamber reaches a preset pressure value, it overcomes the elastic force of the one-way spring and pushes the one-way sealing plate to move towards the air outlet filter, thereby connecting the upper adsorption airflow chamber and the air outlet filter.

[0033] Optionally, the support body is a box-shaped outer shell, with the upper adsorption airflow cavity and the upper cooling airflow cavity formed on the upper inner wall of the outer shell, and the lower adsorption airflow cavity and the lower cooling airflow cavity formed on the lower inner wall of the outer shell.

[0034] The technical solutions provided by the embodiments of this disclosure may include the following beneficial effects:

[0035] The drying and filtration device disclosed herein integrates a refrigeration pipe and an adsorption drying pipe onto the same support body. The refrigeration pipe and the adsorption drying pipe are connected by an air inlet guide cavity, allowing the airflow cooled by the refrigeration pipe to enter the adsorption drying pipe for adsorption and drying. In this way, the airflow (compressed air) is pre-cooled by the refrigeration pipe before entering the adsorption drying pipe, which improves the adsorption and drying efficiency, can fully remove moisture from the compressed air, meets the requirements for compressed air use, and the integration of the refrigeration pipe and the adsorption drying pipe reduces the volume of the entire drying and filtration device, which is conducive to product miniaturization.

[0036] It should be understood that the above general description and the following detailed description are merely exemplary and do not limit this disclosure. Attached Figure Description

[0037] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with the invention and, together with the description, serve to explain the principles of the invention.

[0038] Figure 1 This is a three-dimensional structural schematic diagram of the drying and filtering device disclosed herein rotated through an angle in one embodiment.

[0039] Figure 2 This is a three-dimensional structural schematic diagram of the drying and filtering device of this disclosure rotated to another angle in one embodiment.

[0040] Figure 3 This is a front structural schematic diagram of the drying and filtering device disclosed herein in one embodiment.

[0041] Figure 4 This is a schematic diagram of the rear structure of the drying and filtering device disclosed in one embodiment.

[0042] Figure 5 This is a schematic diagram of the left side structure of the drying and filtering device disclosed in one embodiment.

[0043] Figure 6 This is a schematic diagram of the right side of the drying and filtering device disclosed in one embodiment.

[0044] Figure 7 This is a front cross-sectional view of the drying and filtering apparatus of this disclosure in one embodiment.

[0045] Figure 8 yes Figure 7 A magnified view of a portion of area A.

[0046] Figure 9 This is a rear cross-sectional view of the drying and filtering apparatus of this disclosure in one embodiment.

[0047] Figure 10 This is a left-side cross-sectional view of the drying and filtering apparatus of this disclosure in one embodiment.

[0048] Figure 11 This is a bottom view of the drying and filtering apparatus of this disclosure in one embodiment. Detailed Implementation

[0049] To further illustrate the principles and structure of the present invention, preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings.

[0050] like Figures 1 to 6 As shown, Figure 1 This is a three-dimensional structural diagram of the drying and filtering device of this disclosure rotated at an angle in one embodiment. Figure 2 This is a three-dimensional structural diagram of the drying and filtering device of this disclosure rotated to another angle in one embodiment. Figure 3 This is a front structural schematic diagram of the drying and filtering device of this disclosure in one embodiment. Figure 4 This is a schematic diagram of the rear structure of the drying and filtering device disclosed in one embodiment. Figure 5 This is a schematic diagram of the left side structure of the drying and filtering device of this disclosure in one embodiment. Figure 6This is a schematic diagram of the right side of the drying and filtering device of this disclosure in one embodiment. The drying and filtering device 100 includes a support body 10, a refrigeration pipe 20 disposed on the support body 10, an adsorption drying pipe 30, a condenser pipe 40, a refrigerant compressor 50, a refrigerant filter 60, a throttling device 70, an inlet filter 81, and an outlet filter 82.

[0051] The support body 10 includes a lower body 11 and an upper body 12. Two legs 13 are provided below the lower body 11 to support the entire support body 10. The upper body 12 is located at the upper end of the support body 10, and contains an upper cooling airflow chamber 101 and an upper adsorption airflow chamber 102. The upper cooling airflow chamber 101 and the upper adsorption airflow chamber 102 are isolated from each other and both extend along the lateral direction of the support body 10. The lower body 11 is located at the lower end of the support body 10, and contains a lower cooling airflow chamber 103 and a lower adsorption airflow chamber 104. The lower cooling airflow chamber 103 and the lower adsorption airflow chamber 104 are isolated from each other and both extend along the lateral direction of the support body 10.

[0052] The upper seat 12 and the lower seat 11 can be composed of multiple tubes arranged side by side, with each tube forming an airflow chamber inside. For example... Figure 1 and Figure 2 As shown, the upper seat 12 includes four tubes, forming two upper cooling airflow chambers 101 and two upper adsorption airflow chambers 102; the lower seat 11 includes four tubes, forming two lower cooling airflow chambers 103 and two lower adsorption airflow chambers 104. Here, the number of airflow chambers included in the upper seat 12 and lower seat 11 is not limited, and can be selected or varied according to actual application.

[0053] In other embodiments, the support body may be a box-shaped outer shell. The refrigeration pipe 20, adsorption-drying pipe 30, condenser pipe 40, refrigerant compressor 50, refrigerant filter 60, throttling device 70, inlet filter 81, and outlet filter 82 are enclosed within this outer shell. An upper adsorption airflow chamber and an upper refrigeration airflow chamber are formed on the upper inner wall of the outer shell, and a lower adsorption airflow chamber and a lower refrigeration airflow chamber are formed on the lower inner wall of the outer shell. The upper adsorption airflow chamber 102, upper refrigeration airflow chamber 101, lower adsorption airflow chamber 104, and lower refrigeration airflow chamber 103 may be integrally formed with the sidewalls of the outer shell.

[0054] An electrical control box 105 for controlling the refrigerant compressor 50 and its internal valves is located on the right side of the support body 10. The outer surface of the electrical control box 105 is equipped with a control panel 1051 and a refrigerant pressure gauge 1052. The control panel 1051 is used to set various parameters of the refrigerant compressor 50 and control the opening and closing of the various valves. The refrigerant pressure gauge 1052 is used to measure the refrigerant pressure.

[0055] Combination Figure 7 and Figure 8 As shown, Figure 7 This is a front sectional view of the drying and filtering apparatus of this disclosure in one embodiment. Figure 8 yes Figure 7 The enlarged view of area A shows that the cooling pipe 20 is vertically arranged between the upper and lower ends of the support body 10. More precisely, the cooling pipe 20 is arranged between the upper cooling airflow cavity 101 and the lower cooling airflow cavity 103.

[0056] The support body 10 may include multiple rows of upper cooling airflow chambers 101 and lower cooling airflow chambers 103, and each row of upper cooling airflow chambers 101 and lower cooling airflow chambers 103 is provided with a corresponding cooling pipe 20.

[0057] The air inlet 201 of the refrigeration pipe 20 is connected to the upper refrigeration airflow chamber 101, and a sealing gasket is provided at the air inlet 201 of the refrigeration pipe 20 to ensure the airtightness of the connection between the refrigeration pipe 20 and the outer wall of the upper refrigeration airflow chamber 101. The air outlet 202 of the refrigeration pipe 20 is connected to the lower refrigeration airflow chamber 103, and a sealing gasket is provided at the air outlet 202 of the refrigeration pipe 20 to ensure the airtightness of the connection between the refrigeration pipe 20 and the outer wall of the lower refrigeration airflow chamber 103. The upper refrigeration airflow chamber 101 is connected to the air inlet interface 106 of the support base 10. The lower refrigeration airflow chamber 103 is connected to the air inlet guide chamber 108, combined with... Figure 5 As shown, the air inlet guide cavity 108 is arranged along the longitudinal direction of the support body 10, and the air inlet guide cavity 108 is connected to the adsorption drying tube 30. Through the air inlet guide cavity 108 and the lower cooling airflow cavity 103, the airflow cooled by the cooling tube 20 flows out from the air outlet 202, and then flows into the adsorption drying tube 30 through the lower cooling airflow cavity 103 and the air inlet guide cavity 108, where the adsorption drying tube 30 adsorbs and dries the airflow.

[0058] The cooling pipe 20 has a spirally wound cooling tube 21 inside, which can be a copper tube and contains refrigerant. The cooling tube 21 is wound from the upper end to the lower end of the cooling pipe 20. A metal mesh 22 is provided around the outer periphery of the cooling tube 21. More preferably, a metal mesh 22 is also provided in the inner cavity formed when the cooling tube 21 is wound into a spiral shape. The metal mesh 22 is tightly bonded to the cooling tube 21.

[0059] When the airflow (compressed air) passes through the metal wire mesh 22, the metal wire mesh 22 obstructs the airflow, slowing down the airflow velocity and increasing the contact time between the airflow and the cooling capillary tube 21. This allows for more thorough contact with the cooling capillary tube 21, releasing a large amount of heat, reducing the airflow temperature, and thus improving heat exchange efficiency. After the airflow cools down, a large amount of moisture condenses into water droplets and separates. The condensed water droplets collect in the water storage chamber below the support body 10. A drain valve 111 is installed in the water storage chamber. Regularly opening the drain valve 111 allows the water in the water storage chamber to be drained.

[0060] The refrigeration pipe 20 is also equipped with two mesh plates 23, which are respectively located near the air inlet 201 and air outlet 202 of the refrigeration pipe 20. The mesh plate 23 can be made of stainless steel mesh, with a cross-sectional area approximately equal to the inner diameter of the refrigeration pipe 20, ensuring that all airflow entering or exiting the refrigeration pipe 20 passes through the mesh plate 23. The mesh size of the mesh plate 23 is smaller than that of the metal wire mesh 22, meaning the wire distribution density of the mesh plate 23 is greater than that of the metal wire mesh 22, ensuring that the airflow entering or exiting the refrigeration pipe 20 is evenly distributed after passing through the mesh plate 23.

[0061] The liquid outlet port 211 of the cooling capillary tube 21 is connected to the liquid inlet port 51 of the refrigerant compressor 50. The liquid outlet port 52 of the refrigerant compressor 50 is connected to the liquid inlet port 46 of the condensing capillary tube 41 of the condensing tube 40. The refrigerant compressor 50 is used to compress the refrigerant vaporized in the refrigerant tube 20 into a high-temperature and high-pressure liquid refrigerant, and deliver it to the condensing capillary tube 41 of the condensing tube 40 for cooling.

[0062] The condenser tube 40 is vertically positioned between the upper and lower ends of the support body 10. More precisely, both ends of the condenser tube 40 are connected to the outer walls of the upper refrigeration airflow cavity 101 and the lower refrigeration airflow cavity 103, respectively. However, the openings at the upper and lower ends of the condenser tube 40 are isolated from (i.e., not connected to) the upper and lower refrigeration airflow cavities 101 and 103. The condenser capillary tube 41 can be a copper tube, which is disposed within the condenser tube 40 and is coiled into a spiral shape. The condenser capillary tube 41 extends from the upper end to the lower end of the condenser tube 40. The outer periphery of the condenser capillary tube 41 is filled with a metal wire mesh 42. More preferably, the inner cavity formed when the condenser capillary tube 41 is coiled into a spiral shape can also be filled with a metal wire mesh 42. The metal wire mesh 42 is tightly bonded to the condenser capillary tube 41.

[0063] The metal mesh 42 installed in the condenser tube 40 increases the heat transfer area and improves the heat exchange efficiency. Specifically, when airflow passes through the metal mesh 42, the mesh acts as a barrier, slowing the airflow velocity and thus increasing the contact time between the airflow and the condenser tube 41. This allows the airflow to fully contact the condenser tube 41, absorbing a large amount of heat from the refrigerant and rapidly lowering its temperature.

[0064] The condenser tube 40 is further equipped with two mesh plates 43, which are respectively located at the openings at the upper and lower ends of the condenser tube 40. The mesh plates 43 can be made of stainless steel mesh, with a cross-sectional area approximately equal to the inner diameter of the condenser tube 40, ensuring that all heat exchange medium (e.g., airflow) entering or exiting the condenser tube 40 passes through the mesh plates 43. The mesh size of the mesh plates 43 is smaller than that of the metal wire mesh 42, meaning the wire distribution density of the mesh plates 43 is greater than that of the metal wire mesh 42, ensuring that the heat exchange medium entering or exiting the condenser tube 40 is evenly distributed after passing through the mesh plates 43.

[0065] like Figure 2 As shown, the drying and filtering device 100 includes two sets of adsorption drying tubes 30 arranged side by side, which alternately perform adsorption and regeneration operations. For example, the first set performs regeneration, where the airflow sweeps the desiccant inside the adsorption drying tube 30 from top to bottom, carrying away the moisture in the desiccant; the second set performs adsorption drying, where the desiccant absorbs moisture from the airflow, drying the airflow. When the adsorbent in the second set is close to saturation, the two sets switch, meaning the first set performs adsorption drying while the second set performs regeneration, thus obtaining continuously dry gas.

[0066] It is understood that the drying and filtering device 100 may also include two or more sets of adsorption drying tubes 30. For example, it may include three sets of adsorption drying tubes, one set for regeneration and the other two sets for adsorption drying.

[0067] Furthermore, combined with Figure 9 As shown, Figure 9This is a rear cross-sectional view of the drying and filtering device of this disclosure in one embodiment. The drying and filtering device 100 includes multiple sets of drying adsorption tubes, each set including multiple adsorption drying tubes 30. The adsorption drying tubes of the same set are arranged side by side vertically between the upper and lower ends of the support body 10. More specifically, the multiple adsorption drying tubes 30 of the same set are arranged side by side between the upper adsorption airflow chamber 102 and the lower adsorption airflow chamber 104 of the same set. The interior of each adsorption drying tube 30 is filled with desiccant. The upper end of the adsorption drying tube 30 is respectively provided with an upper opening 31 and a lower opening 32. Sealing gaskets are provided around the upper opening 31 and the lower opening 32 of the adsorption drying tube 30 to ensure that the two ends of the adsorption drying tube 30 are tightly connected to the outer wall of the upper adsorption airflow chamber 102 and the outer wall of the lower adsorption airflow chamber 104, ensuring airtightness.

[0068] The upper opening 31 is connected to the upper adsorption airflow cavity 102. Figure 9 and Figure 10 As shown, Figure 10 This is a left-side cross-sectional view of the drying and filtering device disclosed in one embodiment. A one-way outlet valve seat 83 is provided at the connection between the upper adsorption airflow chamber 102 and the outlet filter 82. The one-way outlet valve seat 83 is provided with a one-way sealing plate 831, a pull rod 832 connected to the one-way sealing plate 831, and a one-way spring 833 sleeved on the pull rod 832. The pull rod 832 is mounted on the support body 10 via a one-way shaft 834. When the airflow pressure in the upper adsorption airflow chamber 102 reaches a preset pressure value, the airflow overcomes the elastic force of the one-way spring 833 and pushes the one-way sealing plate 831 to move towards the outlet filter 82. The one-way sealing plate 831 disengages from the connection between the upper adsorption airflow chamber 102 and the outlet filter 82, connecting the upper adsorption airflow chamber 102 and the outlet filter 82, so that the airflow in the upper adsorption airflow chamber 102 can enter the outlet filter 82 for filtration, and finally flow to the air-using end through the outlet port 107.

[0069] The lower opening 32 communicates with the lower adsorption airflow chamber 104. An intake valve seat 24 is provided at the connection between the lower adsorption airflow chamber 104 and the intake guide chamber 108. A cylinder 241 is mounted on the intake valve seat 24. The cylinder 241 is connected to a connecting rod 244. The cylinder 241 can drive the connecting rod 244 to move up and down. An intake sealing plate 242 and an exhaust sealing plate 243 are spaced apart on the connecting rod 244. The intake sealing plate 242 is located at the outlet of the intake guide chamber 108 near the adsorption drying tube 30. The intake sealing plate 242 seals the intake guide chamber 108, and the exhaust sealing plate 243 seals the exhaust port 109. The exhaust port 109 is located at the end of the lower adsorption airflow chamber 104 and is used to discharge the purged regenerated airflow into the atmosphere. The intake sealing plate 242 and the exhaust sealing plate 243 move with the connecting rod 244.

[0070] When the adsorption drying tubes 30 are in adsorption operation, cylinder 241 actuates, pushing the inlet sealing plate 242 and the exhaust sealing plate 243 upward. After moving a certain distance, the inlet sealing plate 242 moves away from the outlet of the inlet guide cavity 108, and the inlet guide cavity 108 connects with the lower adsorption airflow cavity 104. The exhaust sealing plate 243 seals the exhaust port 109. The airflow cooled by the refrigeration pipe 20 enters the lower adsorption airflow cavity 104 through the inlet guide cavity 108, and then enters each adsorption drying tube 30 for adsorption and drying. The dried airflow converges in the upper adsorption airflow cavity 102. When the airflow pressure in the upper adsorption airflow cavity 102 reaches a preset value, the airflow overcomes the elastic force of 833 and pushes the one-way sealing pressure plate 831 downward, connecting the upper adsorption airflow cavity 102 and the one-way outlet valve seat 83. The airflow enters the outlet filter 82 for filtration to remove oil, dust and other solid impurities. Finally, the filtered airflow will flow to the external air-consuming end through the air outlet 107.

[0071] When the adsorption-drying tubes 30 are in regeneration operation, cylinder 241 actuates, pushing the inlet sealing plate 242 and the exhaust sealing plate 243 downwards. After moving a certain distance, the inlet sealing plate 242 seals the inlet guide cavity 108, and the exhaust sealing plate 243 opens the exhaust port 109. The regeneration airflow flows out from one set of adsorption-drying tubes 30 and enters another set of adsorption-drying tubes 30 in adsorption operation through the regeneration airflow pipe 401 for purging and regeneration. The regeneration airflow purifies the adsorbent from top to bottom to remove moisture from the adsorbent, and the airflow containing moisture is finally discharged through the exhaust port 109. Furthermore, an exhaust muffler 245 is also provided near the exhaust port 109 to reduce exhaust noise.

[0072] It should be noted here that the regeneration gas flow refers to the gas flow that returns to another set of adsorption-drying tubes for purging and desorption after being adsorbed and dried by the adsorption-drying tubes.

[0073] Combination Figure 7 and Figure 11 As shown, Figure 11This is a bottom view of the drying and filtering device of this disclosure in one embodiment, showing two sets of condenser tubes 40. It is understood that the number of sets of condenser tubes 40 is not limited and can be varied according to actual conditions. Each condenser tube 40 has an opening at both its upper and lower ends for the heat exchange medium to pass through. The upper opening of one set of condenser tubes 40 is connected to one set of adsorption-drying tubes 30 via a regeneration gas flow pipe 401. The upper opening of the other set of condenser tubes 40 is connected to another set of adsorption-drying tubes 30 via another regeneration gas flow pipe 401. The two sets of condenser tubes 40 are connected by a lower chamber pipe 403. Both regeneration gas flow pipes 401 are equipped with flow regulating valves (not shown), which are used to regulate the flow rate of regeneration gas flowing into the condenser tubes 40. As mentioned above, the two sets of adsorption-drying tubes 30 alternately perform adsorption and regeneration operations, with one set of adsorption-drying tubes being the adsorption group and the other set being the regeneration group. Under the regulation of the flow regulating valve, part of the airflow after being adsorbed and dried by the adsorption drying tube 30 of the adsorption group (i.e., part of the airflow that gathers in the upper adsorption airflow chamber) flows into a set of condenser tubes 40 connected to the regeneration airflow tube 401 through the regeneration airflow tube 401, and exchanges heat with the condenser tube 41 in the set of condenser tubes 40. Then, the airflow enters another set of condenser tubes 40 adjacent to the lower chamber pipe 403, and exchanges heat in the other set of condenser tubes 40. After absorbing heat, the airflow gathers in the upper adsorption airflow chamber 102 corresponding to the other set of condenser tubes 40. Then, it enters the adsorption drying tube 30 of the regeneration group through another regeneration airflow tube 401, and blows the adsorbent in the set of adsorption drying tubes 30 from top to bottom to remove the moisture in the adsorbent.

[0074] Most of the gas flow after drying in the adsorption drying tube 30 of the adsorption group enters the outlet filter 82 and finally flows to the gas consumption end through the outlet port 107. A small portion of the gas flow enters the condenser tube 40 through the regeneration gas flow tube 401 for heat exchange. Because the gas flow is heated before entering the regeneration group for purging, the desorption efficiency is improved. On the other hand, while the regeneration gas flow is heated, the temperature of the refrigerant in the condenser tube 41 of the condenser tube 40 is reduced, achieving the purpose of cooling the refrigerant. Therefore, energy consumption is saved to a certain extent.

[0075] In other embodiments, a small portion of the airflow after being dried by the adsorption drying tube 30 of the adsorption group can be directly purged by entering the adsorption drying tube 30 of the regeneration group through the regeneration airflow tube, without needing to enter the condenser for heat exchange and heating.

[0076] In addition, a condenser fan 44 is installed near the condenser coil 40. The condenser fan 44 blows the condenser coil 40 to accelerate the drop in the temperature of the refrigerant in the condenser coil 40.

[0077] In addition to heat exchange and cooling with the regenerated airflow, the condenser tubes 40 can also cool the refrigerant using cooling water. For example, the drying and filtering device includes multiple sets of condenser tubes, whose condensing capillaries can be connected in parallel (i.e., the liquid inlet port of each condenser tube is connected to the refrigerant compressor, and the refrigerant flowing out of the refrigerant compressor is distributed into each condenser tube). Cooling water flows through at least one set of condenser tubes, and the cooling water exchanges heat with the condensing capillaries to cool the refrigerant in the condensing capillaries. The condenser tubes without cooling water can be circulated with regenerated airflow for heat exchange. Alternatively, the condensing capillaries of multiple sets of condenser tubes can be connected in series (the refrigerant flowing out of the refrigerant compressor enters each condenser tube sequentially), with cooling water flowing through at least one set of condenser tubes, and the cooling water exchanges heat with the condensing capillaries to cool the refrigerant in the condensing capillaries. It is also possible that cooling water flows through each set of condensers to cool the refrigerant. When the condenser tubes 40 are cooled with cooling water, the air inlet next to the condenser fan can be closed to prevent water from entering the condenser fan.

[0078] The outlet end of the condenser tube 41 of the condenser tube 40 is connected to the refrigerant filter 60. The refrigerant filter 60 is fixed on the support base 10 and is used to filter impurities in the liquid refrigerant output from the condenser tube 41 of the condenser tube 40.

[0079] A throttling device 70 is installed on the support body 10 and is connected to the refrigerant filter 60. It is used to depressurize the low-temperature, high-pressure liquid refrigerant filtered by the refrigerant filter 60 into a low-temperature, low-pressure liquid refrigerant, and then deliver the depressurized low-temperature, low-pressure liquid refrigerant to the cooling capillary tube 21 in the refrigeration pipe 20. The throttling device 70 can be an expansion valve or a capillary tube.

[0080] In the above embodiment, both the condenser tube 40 and the refrigeration tube 20 are provided with metal wire mesh, but it is not limited to this, and the condenser tube 40 and the refrigeration tube 20 may not be provided with metal wire mesh.

[0081] In the above embodiment, the condenser tube 40 adopts a structure similar to that of the refrigerant tube 20 to cool the refrigerant, but it is not limited to this. The condenser tube 40 can also adopt other structures, such as the traditional condenser structure with copper tubes and fins.

[0082] In the above embodiment, the refrigeration pipe 20 exchanges heat with the airflow (compressed air) through a refrigerant, thereby achieving the purpose of cooling the airflow. However, it is not limited to this; in other embodiments, cooling water can also be used for heat exchange with the airflow. Specifically, in conjunction with... Figure 2 As shown, the inlet end of the cooling capillary tube 21 is connected to the inlet port 45 of the external cooling water, and the outlet end of the cooling capillary tube 21 is connected to the outlet port. After the cooling water entering the cooling capillary tube 21 exchanges heat with the airflow, it is discharged from the drying and filtering device through the outlet port. In addition, when the refrigeration pipe 20 does not use cooling water for cooling, the inlet port 45 and the outlet port must be sealed.

[0083] Both the intake filter 81 and the exhaust filter 82 are equipped with filter elements, which can be PP cotton, used to filter solid impurities such as oil and dust.

[0084] Furthermore, it should be noted that the number and arrangement of the refrigeration tubes, condenser tubes, and adsorption drying tubes are not limited to the above embodiments. The number and arrangement of the refrigeration tubes, condenser tubes, and adsorption drying tubes can be varied and selected according to actual applications.

[0085] In summary, the drying and filtration device disclosed herein integrates the refrigeration pipe and the adsorption drying pipe onto the same support body, with the refrigeration pipe and the adsorption drying pipe connected by an air inlet guide cavity. This allows the airflow cooled by the refrigeration pipe to enter the adsorption drying pipe for adsorption drying through the air inlet guide cavity. In this way, the airflow (compressed air) is pre-cooled by the refrigeration pipe before entering the adsorption drying pipe, which improves the adsorption drying efficiency, effectively removes moisture from the compressed air, meets the requirements for compressed air use, and the integration of the refrigeration pipe and the adsorption drying pipe reduces the overall volume of the drying and filtration device, which is beneficial for product miniaturization.

[0086] Furthermore, the drying device includes at least two sets of adsorption drying tubes. Each set of adsorption drying tubes alternates between adsorption and regeneration. Each adsorption drying tube is connected to a corresponding condenser tube via a regeneration gas flow pipe, allowing a portion of the gas flow dried by the adsorption drying tubes to enter the condenser tube through the corresponding regeneration gas flow pipe for heat absorption. The heated gas flow then enters the adsorption drying tube of the regeneration group through another regeneration gas flow pipe to purge the adsorbent within. Because the heated gas flow has a stronger desorption capacity for the adsorbent, the purging efficiency of the regeneration gas flow is improved. On the other hand, while the regeneration gas flow is heated, the temperature of the refrigerant in the condenser tube is reduced, saving energy consumption.

[0087] The above are merely preferred embodiments of the present invention and are not intended to limit the scope of protection of the present invention. All equivalent structural changes made based on the description and drawings of the present invention are included within the scope of protection of the present invention.

Claims

1. A drying and filtering device, characterized in that, include: The support body includes an upper adsorption airflow cavity and an upper cooling airflow cavity located at the upper end of the support body, and a lower adsorption airflow cavity and a lower cooling airflow cavity located at the lower end of the support body. An adsorption drying tube is vertically disposed between the upper and lower ends of the support body, and the adsorption drying tube is connected to the upper adsorption airflow chamber and the lower adsorption airflow chamber. A cooling pipe is vertically arranged between the upper and lower ends of the support body, and the cooling pipe is connected to the upper cooling airflow cavity and the lower cooling airflow cavity. A spiral cooling tube is provided in the cooling pipe. The support body further includes an air inlet guide cavity, which connects the refrigeration pipe and the adsorption drying pipe, so that the airflow cooled by the refrigeration pipe can enter the adsorption drying pipe through the air inlet guide cavity for drying. The upper adsorption airflow cavity, the upper refrigeration airflow cavity, the lower adsorption airflow cavity, and the lower refrigeration airflow cavity extend along the transverse direction of the support body, and the air inlet guide cavity is located at the lower end of the support body and extends along the longitudinal direction of the support body. The drying and filtration device includes at least two sets of adsorption drying tubes, and each set of adsorption drying tubes alternately performs adsorption and regeneration operations. Multiple sets of condenser tubes are vertically arranged between the upper and lower ends of the support body. Each condenser tube contains a spirally coiled condenser tube. The condenser tubes are isolated from the upper refrigeration airflow chamber and the lower refrigeration airflow chamber. A refrigerant compressor is fixed on the support body. The liquid inlet port of the refrigerant compressor is connected to the liquid outlet port of the cooling tube of the refrigeration pipe, and the liquid outlet port of the refrigerant compressor is connected to the liquid inlet port of the condensing tube. The refrigerant compressor is used to compress the refrigerant vaporized in the refrigeration pipe into a high-temperature and high-pressure liquid refrigerant and deliver it to the condensing tube of the condensing pipe. The upper opening of one set of condenser tubes is connected to one set of adsorption-drying tubes through a regeneration gas flow pipe, and the upper opening of the other set of condenser tubes is connected to another set of adsorption-drying tubes through another regeneration gas flow pipe. The two sets of condenser tubes are connected to each other through a lower cavity pipe. Part of the gas flow after being adsorbed and dried by the adsorption drying tube of the adsorption group flows into a set of condenser tubes connected to the regeneration gas flow tube through the regeneration gas flow tube. In the set of condenser tubes, it exchanges heat with the refrigerant flowing out of the condenser tube. Then, the gas flow enters another set of adjacent condenser tubes through the lower chamber pipe and exchanges heat in the other set of condenser tubes. After absorbing heat, the gas flow gathers in the upper adsorption gas flow chamber corresponding to the other set of condenser tubes. Then, it enters the adsorption drying tube of the regeneration group through another regeneration gas flow tube and blows the adsorbent in the adsorption drying tube from top to bottom.

2. The drying and filtering apparatus according to claim 1, characterized in that, The lower adsorption airflow chamber is provided with an exhaust port at its end, which is used to discharge the regenerated airflow after purging into the atmosphere.

3. The drying and filtering apparatus according to claim 2, characterized in that, An air inlet sealing plate is provided at the outlet of the air inlet guide cavity near the adsorption drying tube, and an exhaust sealing plate is provided at the exhaust port. When the adsorption drying tube is undergoing regeneration, the exhaust sealing plate moves away from the exhaust port under the drive of the cylinder, and the intake sealing plate closes the outlet of the intake guide cavity under the drive of the cylinder, so that the regenerated airflow is discharged through the exhaust port.

4. The drying and filtering apparatus according to claim 3, characterized in that, The intake sealing plate and the exhaust sealing plate are connected by a connecting rod, which is connected to the cylinder. The connecting rod can move up and down under the drive of the cylinder to move the intake sealing plate and the exhaust sealing plate.

5. The drying and filtering apparatus according to claim 4, characterized in that, The drying and filtering device also includes a refrigerant filter, which is connected to the outlet end of the condenser tube of the condenser tube and is used to filter impurities in the liquid refrigerant output from the condenser tube of the condenser tube. And a throttling device, which is connected to the refrigerant filter, is used to reduce the pressure of the low-temperature, high-pressure liquid refrigerant filtered by the refrigerant filter to a low-temperature, low-pressure liquid refrigerant, and to deliver the reduced-pressure low-temperature, low-pressure liquid refrigerant to the cooling capillary tube in the refrigeration pipe.

6. The drying and filtering apparatus according to claim 5, characterized in that, The condenser tubes of the multiple sets of condenser tubes are connected in series or in parallel, and cooling water is introduced into at least one set of condenser tubes. The cooling water exchanges heat with the condenser tubes to cool the refrigerant in the condenser tubes. The inlet end of the cooling tube is connected to the inlet port of external cooling water, and the outlet end of the cooling tube is connected to the outlet port. The water that has undergone heat exchange with the airflow in the cooling tube is discharged through the outlet port. The outer periphery of the cooling capillary is provided with a metal wire mesh, and the inner cavity formed when the cooling capillary is coiled into a spiral shape is also provided with a metal wire mesh, and the metal wire mesh is tightly combined with the cooling capillary.

7. The drying and filtering apparatus according to claim 1, characterized in that, The drying and filtering device also includes a condenser fan, which is located near the condenser tube to cool the condenser tube. The regeneration gas flow pipe is equipped with a flow regulating valve to regulate the flow rate of the regeneration gas flowing into the condenser pipe.

8. The drying and filtering apparatus according to claim 1, characterized in that, The drying and filtration device also includes an air inlet filter and an air outlet filter respectively disposed on both sides of the support body; The air intake filter connects the air intake port of the drying filter device and the upper cooling airflow chamber, so that the airflow passes through the air intake filter and then enters the cooling pipe through the upper cooling airflow chamber for cooling. The exhaust filter connects the exhaust port of the drying filter and the upper adsorption airflow chamber, so that after the airflow is adsorbed and dried by the adsorption drying tube, it flows to the gas-using end through the upper adsorption airflow chamber and the exhaust port.

9. The drying and filtering apparatus according to claim 8, characterized in that, A one-way air outlet valve seat is provided at the connection between the upper adsorption airflow chamber and the air outlet filter. The one-way air outlet valve seat is provided with a one-way sealing plate, a pull rod connected to the one-way sealing plate, and a one-way spring sleeved on the pull rod. When the airflow pressure in the upper adsorption airflow chamber reaches a preset pressure value, it overcomes the elastic force of the one-way spring and pushes the one-way sealing plate to move towards the air outlet filter, thereby connecting the upper adsorption airflow chamber and the air outlet filter.

10. The drying and filtering apparatus according to claim 1, characterized in that, The support body is a box-shaped outer shell, with the upper adsorption airflow cavity and the upper cooling airflow cavity formed on the upper inner wall of the outer shell, and the lower adsorption airflow cavity and the lower cooling airflow cavity formed on the lower inner wall of the outer shell.

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