Vacuum membrane dehumidification device with hollow fiber membrane as carrier

Abstract

The utility model discloses a vacuum membrane dehumidification device taking a hollow fiber membrane as a carrier. The vacuum membrane dehumidification device comprises a pipe joint assembly, a connecting assembly, a hollow fiber dehumidification membrane working assembly and a vacuum pump, the pipe joint assembly comprises a first joint and a second joint; the connecting assembly comprises a first sleeve, a hollow pipe and a second sleeve; the hollow fiber dehumidification membrane working assembly comprises a first threaded pipe fitting, a hollow fiber dehumidification membrane pipeline and a second threaded pipe fitting. And the hollow fiber dehumidification membrane pipeline is arranged between the first threaded pipe and the second threaded pipe. The hollow pipe is provided with a ventilation opening used for being connected with a vacuum pump. Compared with the prior art, the dehumidification device adopts a vacuum film dehumidification technology, can realize stable dehumidification of gas, has the characteristics of being compact in structure, flexible and convenient to install, easy to maintain and repair and easy to iterate and upgrade, and solves the problems that an existing vacuum film dehumidification device is tedious in film body disassembly and replacement steps, low in cost and the like. And the surface area of the film body of the selective vacuum dehumidification film is difficult to effectively increase.

Description

TECHNICAL FIELD

[0001] The utility model relates to device dehumidification field, specifically, relate to a kind of vacuum membrane dehumidification device with hollow fiber membrane as carrier. BACKGROUND

[0002] With the improvement of people's living standards and higher requirements for the comfort and health of buildings, indoor air quality has become a key focus.Among them, air humidity as an important environmental parameter is one of the important indicators for evaluating indoor air quality.Indoor air dehumidification is of great significance to protect human health, maintain the quality of living environment and reduce heating and air conditioning energy consumption.Therefore, it is necessary to use dehumidification device to adjust indoor air humidity.

[0003] At present, dehumidification technologies mainly include condensation dehumidification, rotary dehumidification, solution dehumidification and membrane dehumidification.Vacuum membrane dehumidification technology is one of the membrane dehumidification technologies, and as one of the most promising dehumidification technologies, it is a technology that uses a vacuum pump to form a chemical potential difference on both sides of a water vapor selective membrane, and uses the chemical potential difference to dry air.In the process of dehumidification, the humid air is dehumidified without any temperature change, so this technology is considered as an isothermal dehumidification technology.Vacuum membrane dehumidification technology is stable and efficient, and has compact structure, which is suitable for environments with insufficient low-grade heat sources and strict requirements on device size and medium dehumidification environments.

[0004] At present, dehumidification devices based on vacuum membrane dehumidification technology have been proposed, for example: the Chinese utility model patent with publication number CN107036192A proposes a high-efficiency negative pressure membrane dehumidifier, which uses vacuum membrane dehumidification technology to achieve efficient dehumidification of air;The Chinese utility model patent with publication number CN221424994U proposes a dehumidification equipment suitable for flat plate type selective vacuum dehumidification membrane, which has good air tightness, high dehumidification efficiency and other characteristics.However, these vacuum membrane dehumidification devices still have some room for improvement.On the one hand, the space utilization rate of flat plate type selective vacuum dehumidification membrane is low, and in the case of the same volume, the surface area of circular tube type selective vacuum dehumidification membrane with hollow fiber membrane as carrier is larger than that of flat plate type selective vacuum dehumidification membrane, and the increase of selective vacuum dehumidification membrane surface area will increase the dehumidification capacity of the device, which will further improve the humidity control efficiency of vacuum membrane dehumidification device;On the other hand, because the selective vacuum dehumidification membrane needs to be replaced after long-term use, the complex or integrated device structure will increase the operation and maintenance cost of dehumidification system. UTILITY MODEL CONTENTS

[0005] The utility model provides a kind of vacuum membrane dehumidification device with hollow fiber membrane as carrier, the device has the characteristics of compact structure, installation flexible and convenient, easy to maintain repair and easy to iterate upgrade, solve the existing vacuum membrane dehumidification device disassembly replacement membrane body step cumbersome, and effectively increase the problem of selective vacuum dehumidification membrane membrane body surface area.

[0006] To solve the above technical problems, the utility model adopts the following technical solutions:

[0007] A kind of vacuum membrane dehumidification device with hollow fiber membrane as carrier, including pipe joint assembly, connecting assembly, hollow fiber dehumidification membrane working assembly and vacuum pump, it is characterized by: the pipe joint assembly includes first joint and second joint, the connecting assembly includes first sleeve, hollow tube and second sleeve, the hollow fiber dehumidification membrane working assembly includes first threaded pipe piece, hollow fiber dehumidification membrane pipeline and second threaded pipe piece.

[0008] Preferably, the first joint is connected to the first threaded pipe piece by screwing, the left end of the hollow tube is connected to the first joint by the first sleeve, and the right end is connected to the second joint by the second sleeve.

[0009] Preferably, the hollow fiber dehumidification membrane pipeline is arranged between the first threaded pipe piece and the second threaded pipe piece, the first joint is provided with an air inlet, the second joint is provided with an air outlet, and a vent is arranged on the wall of the hollow tube for connecting the vacuum pump.

[0010] Preferably, the inner surfaces of the first joint and the second joint are provided with internal threads of the same specification, and an elastic rubber gasket is arranged at the bottom of the internal threads, the outer surfaces of the first threaded pipe piece and the second threaded pipe piece are provided with external threads matched with the internal threads of the first joint and the second joint.

[0011] Preferably, the first joint, the first threaded pipe piece, the hollow tube, the second threaded pipe piece and the second joint are made of aluminum, the outer diameters of the first joint, the second joint and the hollow tube are consistent, the inner diameter of the hollow tube is larger than the maximum outer diameter of the hollow fiber dehumidification membrane working assembly, and the hollow fiber dehumidification membrane working assembly can pass through the hollow tube.

[0012] Preferably, the first sleeve and the second sleeve are silicone hoses, the inner diameters of the first and second sleeves are consistent with the outer diameters of the first joint, the hollow tube and the second joint, and pipe clamps are arranged at the connections between the first and second sleeves and the first joint, the hollow tube and the second joint.

[0013] Preferably, the hollow fiber dehumidification membrane pipe is in a ring-shaped hollow structure, part of the pipe wall is sealed inside the first threaded pipe and the second threaded pipe, and the pipe opening of the hollow fiber dehumidification membrane pipe is located outside the sealing surface, and the hollow fiber dehumidification membrane working assembly is only provided with an air flow inside the hollow fiber dehumidification membrane pipe.

[0014] Further, during the operation of the device, the wet air enters the hollow fiber dehumidification membrane working assembly from the air inlet of the first joint, the air vent on the hollow pipe wall is connected to the vacuum pump to form a negative pressure area inside the connecting assembly, the water vapor and part of the air penetrate through the wall of the hollow fiber dehumidification membrane pipe and are discharged from the air vent on the hollow pipe wall, so that the dehumidification work is completed, and the dry air after dehumidification is obtained at the air outlet of the second joint.

[0015] In order to ensure the air tightness of the device, the pipe joint assembly and the hollow fiber dehumidification membrane working assembly of the vacuum membrane dehumidification device with the hollow fiber membrane as the carrier are connected through threads.

[0016] In order to avoid deformation of the device caused by negative pressure environment when the vacuum pump is started, pipe buckles are arranged at the connection between the first sleeve and the first joint and the connection between the second sleeve and the second joint, and the pipe buckles are used to apply sufficient pressure to the connection to make the surface of the silica gel hose and the aluminum metal more closely combined.

[0017] The device has the following beneficial effects:

[0018] The vacuum membrane dehumidification device with the hollow fiber membrane as the carrier ensures the air tightness of the device by extruding the elastic rubber sealing gasket, and the device structure is stabilized by the pipe buckle, which can effectively prevent the leakage of gas flow, stabilize the gas parameters, and improve the control accuracy of indoor air humidity.

[0019] The various components of the vacuum membrane dehumidification device with the hollow fiber membrane as the carrier are independent of each other, which is beneficial to the disassembly and replacement of the hollow fiber dehumidification membrane working assembly, can effectively improve the dehumidification efficiency of the device, and reduce the operation cost of the device.

[0020] Compared with the traditional vacuum membrane dehumidification device with a planar membrane as the carrier, the vacuum membrane dehumidification device with the hollow fiber membrane as the carrier has higher space utilization, can obtain more membrane surface area of the dehumidification membrane under the condition of the same device volume, improves the dehumidification capacity of the device, and the unique hollow fiber structure can also enhance the mass transfer efficiency of the gas, so that the dehumidification process is more rapid and efficient, and the overall dehumidification performance and the practicability of the device are further optimized.

[0021] The vacuum membrane dehumidification device with the hollow fiber membrane as a carrier can effectively realize dehumidification of gas, provide dry air for an air conditioning system, and ensure that the temperature and humidity of the gas meet the requirements, so that the evaporator of the air conditioning system does not need to undertake the dehumidification task, runs in a dry working condition, is more low-carbon and energy-saving, effectively reduces the operation cost, and prolongs the service life of the equipment.

[0022] According to the technical scheme, when the vacuum membrane dehumidification device with the hollow fiber membrane as a carrier is running, the vacuum pump extracts air in the connecting assembly. Because the hollow fiber dehumidification membrane has selective permeability, part of the water vapor can permeate the wall surface of the hollow fiber dehumidification membrane pipeline and be discharged through the ventilation port. The wet air enters the device through the air inlet, forms dry air after the vacuum membrane dehumidification treatment, and is discharged from the device through the air outlet, so that the dehumidification effect is efficient and stable.

[0023] These features and advantages of the utility model will be disclosed in detail in the following specific embodiments and drawings. BRIEF DESCRIPTION OF DRAWINGS

[0024] The utility model will be further described below in combination with the drawings and examples, and the drawings show:

[0025] Figure 1 is the structure schematic diagram of the vacuum membrane dehumidification device of the utility model;

[0026] Figure 2 is the pipe joint subassembly structure schematic diagram of the vacuum membrane dehumidification device of the utility model;

[0027] Figure 3 is the connecting subassembly structure schematic diagram of the vacuum membrane dehumidification device of the utility model;

[0028] Figure 4 is the hollow fiber dehumidification membrane working subassembly structure schematic diagram of the vacuum membrane dehumidification device of the utility model;

[0029] Figure 5 is the internal structure schematic diagram of the vacuum membrane dehumidification device of the utility model.

[0030] The drawings show: 1, first joint;2, first sleeve;3, hollow tube;4, second sleeve;5, first threaded pipe fitting;6, hollow fiber dehumidification membrane pipeline;7, second threaded pipe fitting;8, second joint;9, elastic rubber sealing washer;101, air inlet;801, air outlet;301, ventilation port. DETAILED DESCRIPTION

[0031] The following is an explanation and description of the technical solutions of the embodiments of the present invention in conjunction with the drawings of the embodiments of the present invention, but the following embodiments are only preferred embodiments of the present invention and are not exhaustive. Based on the embodiments in the embodiments, other embodiments obtained by those skilled in the art without creative work are all within the scope of protection of the present invention.

[0032] Example:

[0033] like Figure 1 As shown, the first threaded pipe fitting 5 is threadedly connected to the first joint 1, with the threaded surfaces tightly fitting together and squeezing the elastic rubber sealing gasket 9 at the bottom of the first joint 1, making it tightly fit the inner surface of the first joint 1. The hollow tube 3 is disposed between the first joint 1 and the second joint 8. The first sleeve 2 is sleeved over the outer surfaces of the first joint 1 and the hollow tube 3, and a pipe clip is provided at each connection. The second threaded pipe fitting 7 is threadedly connected to the second joint 8, squeezing the elastic rubber sealing gasket 9 at the bottom of the second joint 8. The second sleeve 4 is sleeved over the outer surfaces of the hollow tube 3 and the second joint 8, and a pipe clip is provided at each connection surface.

[0034] like Figure 4 As shown, the hollow fiber dehumidification membrane pipe 6 is sealed between the first threaded pipe 5 and the second threaded pipe 7, leaving only the air inlet surface and the exhaust hole surface at both ends to ensure that the gas to be treated will flow into the hollow fiber dehumidification membrane pipe 6 without gas leakage.

[0035] like Figure 1 As shown, after the vacuum membrane dehumidification device with the hollow fiber membrane as the carrier is assembled, the vacuum pump is connected to the vent 301 on the wall of the hollow tube to extract air from the internal area of ​​the connected component and maintain a stable negative pressure state in the area.

[0036] like Figure 1 As shown, the device is connected to the wet air to be processed through the air inlet 101. The water vapor and a small amount of gas in the wet air to be processed will penetrate into the negative pressure area inside the hollow tube 3 through the hollow fiber dehumidification membrane pipe 6 inside the device. The highly humid permeated gas will be discharged from the vent 301 as the vacuum pump draws it. The dry air formed after the wet air to be processed is processed by the device will be provided to the user through the air outlet 801 to achieve stable dehumidification.

[0037] The preferred embodiments of the present invention are described, but they should not be construed as limiting the claims. The present invention is not limited to the above embodiments. The specific structure thereof is subject to variation. Those skilled in the art may make various changes and modifications based on the present invention. As long as they do not depart from the spirit of the present invention, they are all within the scope defined by the appended claims of the present invention.

Claims

1. A vacuum membrane dehumidification device using a hollow fiber membrane as a carrier, comprising a pipe joint assembly, a connection assembly, a hollow fiber dehumidification membrane working assembly, and a vacuum pump, characterized in that: The pipe joint assembly includes a first joint and a second joint, the connection assembly includes a first sleeve, a hollow tube and a second sleeve, and the hollow fiber dehumidification membrane working assembly includes a first threaded pipe, a hollow fiber dehumidification membrane pipeline and a second threaded pipe; The first joint is connected to the first threaded pipe by threads, the left end of the hollow tube is connected to the first joint by the first sleeve, and the right end is connected to the second joint by the second sleeve, and the second joint is connected to the second threaded pipe by threads; The hollow fiber dehumidification membrane pipe is arranged between the first threaded pipe fitting and the second threaded pipe fitting. The first joint is provided with an air inlet, the second joint is provided with an air outlet, and a vent is provided on the wall of the hollow pipe for connecting the vacuum pump.

2. The vacuum membrane dehumidification device using a hollow fiber membrane as a carrier according to claim 1, characterized in that: The inner surfaces of the first joint and the second joint are provided with internal threaded surfaces of the same specifications, and an elastic rubber sealing gasket is provided at the bottom of the internal threaded surface. The outer surfaces of the first threaded pipe fitting and the second threaded pipe fitting are provided with external threaded surfaces that match the internal threaded surfaces of the first joint and the second joint.

3. The vacuum membrane dehumidification device using a hollow fiber membrane as a carrier according to claim 1, characterized in that: The first joint, the first threaded pipe fitting, the hollow pipe, the second threaded pipe fitting and the second joint are made of aluminum metal. The outer diameters of the first joint, the second joint and the hollow pipe are the same. The inner diameter of the hollow pipe is larger than the maximum outer diameter of the hollow fiber dehumidification membrane working component. The hollow fiber dehumidification membrane working component can pass through the hollow pipe.

4. The vacuum membrane dehumidification device using a hollow fiber membrane as a carrier according to claim 1, characterized in that: The first sleeve and the second sleeve are silicone hoses. The inner diameters of the first and second sleeves are consistent with the outer diameters of the first joint, the hollow tube and the second joint, and pipe clips are provided at the connections between the first and second sleeves and the first joint, the hollow tube and the second joint.

5. The vacuum membrane dehumidification device using a hollow fiber membrane as a carrier according to claim 1, characterized in that: The hollow fiber dehumidification membrane pipe has an annular hollow structure, part of its pipe wall is sealed inside the first threaded pipe fitting and the second threaded pipe fitting, the pipe mouth of the hollow fiber dehumidification membrane pipe is located outside the sealing surface, and the hollow fiber dehumidification membrane working component only allows air to flow inside the hollow fiber dehumidification membrane pipe.

6. The vacuum membrane dehumidification device using a hollow fiber membrane as a carrier according to claim 1, characterized in that: When the device is in operation, humid air enters the hollow fiber dehumidification membrane working assembly from the air inlet at the first joint, the vent on the wall of the hollow tube is connected to the vacuum pump to form a negative pressure area inside the connection assembly, water vapor and part of the air will permeate the wall of the hollow fiber dehumidification membrane pipe and be discharged from the vent on the wall of the hollow tube, thereby completing the dehumidification work, and obtaining dry air after dehumidification at the air outlet of the second joint.

Images