Telescopic curtain type constant-air-speed demisting device
By adding telescopic curtains to the defog defog device of the solution dehumidifier unit, and adjusting the overwind area of the wire mesh with a differential pressure transmitter and a driving motor, the problem of defog defog effect and liquid-carrying risk caused by the wind speed on the wire mesh surface is solved, and a stable defog effect under different air volume conditions is achieved.
Patent Information
- Application Number
- CN202420530575.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-03-19
- Publication Date
- 2025-04-29
- Estimated Expiration
- 2034-03-19
AI Technical Summary
In the solution dehumidifier unit, when the wind speed on the surface of the wire mesh is deviated from the optimal wind speed range, the defogging effect is greatly reduced, increasing the risk of liquid.
A telescopic curtain-type fixed-wind-speed defogging device is designed to adjust the overwind area of the wire mesh by adding a telescopic curtain on the air inlet side and using a differential pressure transmitter and a driving motor to ensure that the overwind speed on the surface of the wire mesh is consistent.
It effectively ensures that the overwind speed of the wire mesh surface under different operating air volumes is consistent, ensuring the best defog effect, and reducing the risk of liquid. It is suitable for fork flow and counterflow solution dehumidification units.
Smart Images
Figure CN222804869U_ABST
Abstract
Description
Technical Field
[0001] The utility model belongs to the technical field of constant wind speed solution dehumidification and demisters, and in particular relates to a telescopic curtain type constant wind speed demister device. Background Art
[0002] Solution dehumidification air treatment technology uses a solution with hygroscopic properties to directly contact the air, and uses the water vapor partial pressure difference between the two to achieve the transfer of moisture, thereby achieving the purpose of regulating humidity. The solution generally uses calcium chloride, lithium bromide and lithium chloride solution, etc., which are all corrosive to metals.
[0003] In the actual operation of the liquid dehumidification unit, due to the direct contact between the air and the solution, it is easy for the air to carry solution droplets or fine mist, which is generally called liquid carryover. The occurrence of liquid carryover will corrode equipment such as fans and air ducts, and excessive solution ions will have an adverse effect on the quality of the supply air. Therefore, it is very important to install a defogger in the supply and exhaust channels of the liquid dehumidification unit.
[0004] The demister used in the solution dehumidification unit is generally a wire mesh demister. The wire mesh is woven from corrosion-resistant material, preferably polypropylene PP. The overall demister wire mesh splicing structure type can be Z-type, V-type and flat-plate type, among which the Z-type wire mesh is arranged parallel to the air flow direction, and the V-type and flat-plate wire mesh are arranged perpendicular to the air flow direction.
[0005] The demisting separation mechanism of wire mesh mainly includes direct interception, inertial impact and diffusion interception. The demisting effect of direct interception is mainly affected by the mesh aperture parameters; diffusion interception is mainly for droplets with a particle size less than 1μm, and the droplets produced by liquid entrainment are generally larger than 1μm, so this mechanism has little effect on the demisting effect; and inertial impact is to intercept by using the inertial effect of droplets to collide with the wire mesh, which is the main mechanism of action in the solution unit demisting device. With the increase of air flow velocity, it should be enhanced, and the wire mesh separation efficiency will be significantly improved, but too high air velocity will cause liquid flooding to form secondary liquid entrainment.
[0006] In actual operation, the unit operates at different air volumes, which are usually lower than or equal to the design air volume. As a result, the wind speed on the screen surface may be lower than the design wind speed. As the actual operating surface wind speed decreases, when it leaves the optimal wind speed range, the defog effect will be greatly reduced, increasing the risk of liquid carryover during operation. Utility Model Content
[0007] The technical problem to be solved by the utility model is that during the working process of the demister, the wind speed on the surface of the wire mesh deviates from the optimal wind speed range, so the demisting effect is greatly reduced, and the risk of liquid carrying during the operation of the unit is increased.
[0008] In order to solve the above technical problems, the technical solution provided by the utility model is: a retractable curtain type constant wind speed defogger, comprising a defogger main body, a shell is arranged on the outside of the defogger main body, and the front and rear sides of the defogger main body are respectively an air inlet side and an air outlet side, the shell is provided with a wire mesh at the air inlet side, and the defogger main body is connected to a pressure differential transmitter at the air inlet side and the air outlet side through a pressure pipe, and the upper and lower ends of the shell on the air inlet side are provided with traction grooves, a threaded rod is arranged in the traction groove, the threaded rod is located inside the traction groove and is connected to an adjustment block through a thread, the upper and lower adjustment blocks are connected by a connecting rod, a retractable curtain is connected between one side of the connecting rod and one side of the shell, one end of the two threaded rods pass through one side of the shell and are connected by a synchronous belt, and one end of one of the threaded rods is connected to a driving motor.
[0009] As an improvement, the traction groove has the same length as the interior of the housing, the traction groove matches the shape of the adjustment block, and is slidably connected to the adjustment block.
[0010] As an improvement, the two ends of the connecting rod are rotatably connected to the adjustment block, and one side of the connecting rod is fixedly connected to one end of the retractable curtain through a fixing groove, and the other end of the retractable curtain is fixedly connected to one side of the inside of the shell through a T-shaped fixing seat.
[0011] As an improvement, the retractable curtain is a W-shaped folding and retractable structure, the length of the retractable curtain is the same as the length inside the shell, and the height of the retractable curtain is the same as the distance between the two traction grooves.
[0012] As an improvement, a protective cover is provided on the outer side of the synchronous belt, and the driving motor is fixed on one side of the protective cover.
[0013] The advantages of the utility model compared with the prior art are:
[0014] On the basis of the original wire mesh demister, a telescopic curtain is added on the air inlet side. The overall pressure drop of the device is monitored by a differential pressure transmitter. According to the change of pressure drop, the connected threaded rod is driven to rotate by a driving motor, thereby driving the telescopic curtain to move left and right with the adjustment block during synchronous rotation, thereby adjusting the wind flow area of the wire mesh until the pressure drop reaches the designed value. In this way, the wind speed on the surface of the wire mesh is consistent under different operating air volumes, thereby ensuring the best demisting effect and making the unit run stably and safely. It is suitable for cross-flow and counter-flow solution dehumidification units. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 The utility model is a structure of a telescopic curtain type constant wind speed demisting device Figure 1 .
[0016] Figure 2The utility model is a structure of a telescopic curtain type constant wind speed demisting device Figure 2 .
[0017] Figure 3 The utility model is an exploded structural diagram of a telescopic curtain type constant wind speed demisting device.
[0018] Figure 4 It is an enlarged view of the structure of point A of a telescopic curtain type constant wind speed defogger device of the utility model.
[0019] As shown in the figure: 1. Demisting body; 2. Shell; 3. Air inlet side; 4. Air outlet side; 5. Wire mesh; 6. Pressure pipe; 7. Pressure differential transmitter; 8. Traction groove; 9. Threaded rod; 10. Adjustment block; 11. Connecting rod; 12. Retractable curtain; 13. Synchronous belt; 14. Driving motor; 15. Fixing groove; 16. Fixing seat; 17. Protective cover DETAILED DESCRIPTION
[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0021] In the description of the utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the utility model can be understood according to specific circumstances.
[0022] Embodiment 1:
[0023] As the instruction manual Figure 1-4 As shown, a retractable curtain type constant wind speed defogger comprises a defogger body 1, a shell 2 is arranged outside the defogger body 1, and the front and rear sides of the defogger body 1 are respectively an air inlet side 3 and an air outlet side 4, a wire mesh 5 is arranged at the air inlet side 3 of the shell 2, and the defogger body 1 is connected to a pressure differential transmitter 7 at both the air inlet side 3 and the air outlet side 4 through a pressure pipe 6.
[0024] In the utility model, the upper and lower ends of the housing 2 on the air inlet side 3 are provided with traction grooves 8, the traction grooves 8 are the same length as the interior of the housing 2, a threaded rod 9 is provided in the traction groove 8, the threaded rod 9 is located inside the traction groove 8 and is connected to an adjustment block 10 through a thread, the traction groove 8 matches the shape of the adjustment block 10, and is slidably connected to the adjustment block 10, the upper and lower adjustment blocks 10 are connected by a connecting rod 11, a retractable curtain 12 is connected between one side of the connecting rod 11 and one side of the housing 2, the two ends of the connecting rod 11 are rotatably connected to the adjustment block 10, and one side of the connecting rod 11 is connected to the fixing groove 15. One end of the retractable curtain 12 is fixedly connected, and the other end of the retractable curtain 12 is fixedly connected to one side of the inside of the shell 2 through a T-shaped fixing seat 16. The retractable curtain 12 is a W-shaped folding and retractable structure. The length of the retractable curtain 12 is the same as the length inside the shell 2, and the height of the retractable curtain 12 is the same as the distance between the two traction grooves 8. One end of the two threaded rods 9 passes through one side of the shell 2 and is connected by a synchronous belt 13, and one end of one threaded rod 9 is connected to a drive motor 14. A protective cover 17 is provided on the outside of the synchronous belt 13, and the drive motor 14 is fixed to one side of the protective cover 17.
[0025] In the specific implementation of the utility model, the liquid dehumidification unit uses the pressure drop of the defogger under the design air volume condition as the reference control value SV, and the general SV value does not exceed 300Pa, and the wind speed on the surface of the wire mesh 5 does not exceed 2.5m / s. At this time, the retractable curtain 12 is in the initial position without shielding the wire mesh 5. When the operating air volume changes, the pressure drop monitored by the differential pressure transmitter 7 is less than SV, and the synchronous belt 13 is driven by the drive motor 14 to rotate, so that the two threaded rods 9 rotate synchronously clockwise, and the end of the retractable curtain connected to the connecting rod 11 is driven by the adjustment block 10 connected by the thread on the threaded rod 9 to stretch, thereby reducing the wind passing area of the wire mesh 5 until the pressure drop of the defogger is equal to the SV value; when the pressure drop monitored by the differential pressure transmitter 7 is greater than SV, the drive motor 14 drives the synchronous belt 13 to rotate, so that the two threaded rods 9 rotate synchronously counterclockwise, and the end of the retractable curtain connected to the connecting rod 11 is driven by the adjustment block 10 connected by the thread on the threaded rod 9 to fold and shrink, increasing the wind passing area of the wire mesh 5, until the pressure drop of the defogger is equal to the SV value. The unfolding area of the retractable curtain 12 can be set according to the actual range of wind volume change, and is generally not higher than 2 / 3 of the projection area of the screen 5.
[0026] The above describes the utility model and its implementation methods, which are not restrictive. The specific implementation method is only one of the implementation methods of the utility model, and the actual structure is not limited thereto. In short, if ordinary technicians in this field are inspired by it, without departing from the purpose of the invention of the utility model, they can design a structure and embodiment similar to the technical solution without creativity, which should belong to the protection scope of the utility model.
Claims
1. A telescopic curtain type constant wind speed defogger, comprising a defogger body, a shell is arranged outside the defogger body, and the front and rear sides of the defogger body are respectively an air inlet side and an air outlet side, the shell is provided with a wire mesh at the air inlet side, and the defogger body is connected to a pressure differential transmitter at both the air inlet side and the air outlet side through a pressure pipe, characterized in that: The upper and lower ends of the shell on the air inlet side are both provided with traction grooves, and a threaded rod is provided in the traction groove. The threaded rod is located inside the traction groove and is connected to an adjustment block through a thread, and the upper and lower adjustment blocks are connected by a connecting rod, and a retractable curtain is connected between one side of the connecting rod and one side of the shell, one end of the two threaded rods passes through one side of the shell and is connected by a synchronous belt, and one end of one of the threaded rods is connected to a driving motor.
2. A retractable curtain type constant wind speed defogger according to claim 1, characterized in that: The traction groove has the same length as the interior of the shell, matches the shape of the adjustment block, and is slidably connected with the adjustment block.
3. The telescopic curtain type constant wind speed defogger device according to claim 1, characterized in that: The two ends of the connecting rod are rotatably connected to the adjustment block, and one side of the connecting rod is fixedly connected to one end of the retractable curtain through a fixing groove, and the other end of the retractable curtain is fixedly connected to one side of the inner part of the shell through a T-shaped fixing seat.
4. The telescopic curtain type constant wind speed defogger device according to claim 1, characterized in that: The retractable curtain is a W-shaped folding and retractable structure. The length of the retractable curtain is the same as the length inside the shell, and the height of the retractable curtain is the same as the distance between the two traction grooves.
5. The telescopic curtain type constant wind speed defogger device according to claim 1, characterized in that: A protective cover is arranged on the outer side of the synchronous belt, and the driving motor is fixed on one side of the protective cover.