Extrusion dehydration device

Abstract

The extrusion dewatering device comprises a shell, a rotary extrusion assembly and a water collecting shell, the shell is of a cylindrical structure and is provided with an air inlet and one or two air outlets, the outer wall of the shell is provided with a plurality of through overflow holes, the inner wall of the shell is covered with a water absorption layer, the air inlet is in butt joint with an exhaust pipe of a wet dust collector, and the rotary extrusion assembly is in butt joint with the water absorption layer. The rotary extrusion assembly is arranged in the shell, the water absorption layer is extruded through the rotary dewatering roller, so that water flows out of the overflow holes, and the water collection shell is arranged below the shell and collects the overflowed water. The utility model discloses an extrusion dehydration device which is connected with an exhaust pipe of a wet dust collector, so that the water vapor content in exhausted air flow is further reduced, the dust collection effect is improved, and the service life of the wet dust collector is guaranteed.

Description

Technical Field

[0001] This utility model relates to the field of wet dust removal fans, and in particular to a compression dehydration device. Background Technology

[0002] Currently, wet scrubbers are used for dust suppression and removal in coal conveying systems such as coal mine working faces, coal washing plants, and power plants. These scrubbers vary in structure, but their main components include an electric local ventilation fan, a sprayer, a water supply ring, a mixing and wetting cylinder, and a dewatering cylinder. When dust-laden air enters the wet scrubber, it mixes at high speed with the water mist inside the cylinder, generating a rotating motion. This mixture forms a muddy water-laden airflow that enters the dewatering cylinder and moves at high speed in a spiral motion along the inner wall of the dewatering cylinder. Under the action of centrifugal force, the heavier muddy water in the muddy water-laden airflow is thrown to the wall of the dewatering cylinder and pressed into the water collection tank, then discharged through the drain pipe. The dehydrated and purified airflow is discharged through the exhaust end of the wet scrubber.

[0003] Existing wet scrubbers typically employ only a single-stage or two-stage dehydration structure, which cannot adequately remove moisture from the exhaust airflow, resulting in the exhaust airflow still containing a large amount of moisture, affecting the environment inside and outside the workshop.

[0004] To address this issue, an additional dehydration structure is added to the rear end of the wet scrubber. The existing technology uses lotus leaf superhydrophobic material to make filter bag boxes for further dust removal and dehydration. However, this method has problems such as high resistance, easy clogging, and large space occupation of the box. Utility Model Content

[0005] The purpose of this invention is to solve the problems in the prior art by providing a squeezing and dehydration device that is connected to the exhaust pipe of a wet dust collector to further reduce the water vapor content in the discharged airflow and improve the dust removal effect.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a squeezing dewatering device, comprising a housing, a rotary squeezing assembly, and a water collecting shell. The housing is a cylindrical structure with an air inlet and an air outlet. The air inlet is connected to a front exhaust pipe via a horn-shaped expansion tube, and the air inlet is connected to the side with the larger outer diameter of the horn-shaped expansion tube. The outer wall of the housing is provided with multiple through overflow holes, while the inner wall is covered with a water-absorbing layer. The rotary squeezing assembly is located inside the housing, and the water-absorbing layer is squeezed by rotating dewatering rollers, causing water to flow out from the overflow holes. The water collecting shell is located below the housing to collect the overflowing water. The rotary squeezing assembly includes two sets of supports, a rotating shaft, a drive motor, and a dewatering roller assembly. The two sets of supports are located at both ends of the housing, and the rotating shaft, with bearings, is inserted between the two sets of supports. One end of the rotating shaft is connected to the drive motor, and the dewatering roller assembly is mounted on the rotating shaft and rotates with the rotating shaft.

[0007] Preferably, there is only one air inlet and one air outlet, with the air inlet located at one end of the housing and the air outlet located at the other end of the housing, so as to realize one air inlet and one air outlet.

[0008] Preferably, there is one air inlet and two air outlets, wherein the air inlet is located in the middle of the side wall of the dehydration cylinder, and the two air outlets are located at both ends of the shell, so as to realize one air inlet and two air outlets.

[0009] Preferably, the dewatering roller assembly has two sets of turntables and multiple pressure rollers disposed between the two sets of turntables. The multiple pressure rollers are equally spaced along the circumference of the turntables, and the pressure rollers squeeze the water-absorbing layer inside the housing. The two ends of the pressure rollers are fixed to the turntables with bearings. The center of the turntable is mounted on a rotating shaft and rotates with the rotating shaft. The pressure rollers rotate synchronously and can rotate on their own.

[0010] Preferably, the multiple overflow holes on the outer wall of the shell are arranged in a horizontal and vertical matrix, and the outer wall of the shell is also provided with a drainage structure to guide the water overflowing from the overflow holes into the water collection shell.

[0011] Preferably, the drainage structure includes a vertically arranged main drainage channel and a plurality of horizontally arranged branch drainage channels. The branch drainage channels are inclined, and their lowest points are connected to the main drainage channel. Each branch drainage channel is located below each row of overflow holes.

[0012] Preferably, a guide groove is provided between the overflow hole and the diversion branch groove.

[0013] Preferably, the housing is assembled by interlocking two semi-circular structures.

[0014] Compared with the prior art, the extrusion dehydration device disclosed in this utility model has the following beneficial effects:

[0015] The water-absorbing layer is set up to effectively absorb the water vapor in the exhaust air of the wet scrubber, so that the final exhaust air meets the requirements;

[0016] The dewatering roller assembly combines motor-driven rotating pressure rollers with self-rotation to achieve rolling and squeezing of the absorbent layer, causing the water absorbed inside to flow out from the overflow hole, thus ensuring the dryness of the absorbent layer and achieving continuous dewatering.

[0017] The design of the drainage structure on the outer wall of the shell allows the overflowing water to be concentrated and channeled into the water collection shell, preventing the water overflowing from the upper overflow hole from flowing downward into the lower overflow hole, thus improving the dehydration effect.

[0018] The housing has a single-inlet / single-outlet or single-inlet / double-outlet structure to meet the needs of different scenarios. Attached Figure Description

[0019] Figure 1 This is a front view of the first embodiment of the present invention;

[0020] Figure 2 This is a cross-sectional view of the first embodiment of the present invention;

[0021] Figure 3 This is a side sectional view of the first embodiment of the present invention;

[0022] Figure 4 This is a front view of the second embodiment of the present invention;

[0023] Figure 5 This is a cross-sectional view of the second embodiment of the present invention. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model. Example

[0025] like Figures 1-3 As shown, the present invention discloses a dehydration device that is connected to the exhaust pipe of a wet scrubber to further dehydrate the airflow processed by the wet scrubber, ensuring the dryness of the final discharged gas. The specific structure includes a shell 1, a rotary extrusion assembly 2, and a water collection shell 3. The shell is a cylindrical structure with an air inlet 11 at one end and an air outlet 12 at the other end, and a dehydration section 13 in the middle. The air inlet is connected to the exhaust pipe of the wet scrubber in conjunction with a horn-shaped expansion pipe 6. The diameter of the exhaust pipe is smaller than the inner diameter of the air inlet, which facilitates the high-speed airflow to enter the shell and slow down to improve the water absorption and dehydration effect. The dehydration section absorbs water vapor in the airflow and dehydrates it, while the exhaust outlet discharges the dehydrated gas. The outer wall of the shell of the dehydration section is provided with multiple through overflow holes 14, and the inner wall is covered with a water-absorbing layer 4. This water-absorbing layer is used to absorb water vapor in the airflow. The rotary extrusion assembly is located inside the shell and uses a rotating dehydration roller assembly to squeeze the water-absorbing layer, so that water overflows from the overflow holes and flows into the water collection shell located below the shell.

[0026] Specifically, to facilitate the installation of the internal structure, the shell is a two-semi-circular interlocking structure, pivotally connected at the lower end and with a flange edge 15 at the upper end, which is clamped and fixed with fasteners to form a complete cylinder. The overflow holes on the surface of the dehydration section of the shell are arranged in a horizontal and vertical matrix. Since there is not much water in the water absorption layer, the water overflowing from the overflow holes will only flow along the shell wall. To prevent the water flowing out of the upper row of overflow holes from re-entering the inner wall of the shell through the lower row of overflow holes, a drainage structure 5 is also provided on the outer wall of the shell. Since the shell is cylindrical, the water overflowing from the overflow holes in the lower half can drip directly into the water collection shell below. Therefore, the drainage structure only needs to be set in the upper half of the shell.

[0027] Specific drainage structures such as Figure 1As shown, the system includes a main drainage channel 51 arranged radially along the shell and multiple branch drainage channels 52 arranged laterally. The branch drainage channels are inclined, and their lowest point is connected to the main drainage channel, so that the water flow can converge into the main drainage channel. The main drainage channel is located below the inner side of the water collection shell, so that the water in the channel can flow directly into the water collection shell. Multiple branch drainage channels are located corresponding to each row of overflow holes, and each branch drainage channel is located below each row of overflow holes. In order to enable the water overflowing from the overflow hole to quickly enter the branch drainage channel, a guide channel 53 can also be provided between the overflow hole and the branch drainage channel.

[0028] The absorbent layer covering the inner wall of the shell dehydration section can be made of sponge or other absorbent materials according to the needs of the scenario. If sponge is selected, it needs to have good water absorption and breathability. Therefore, microfiber sponge can be selected.

[0029] The rotary extrusion assembly squeezes out water from the absorbent layer, and its structure is as follows: Figures 2-3 As shown, it includes two sets of brackets 21, a rotating shaft 22, a drive motor 23, and a dewatering roller assembly. The two sets of brackets are located inside the housing on both sides of the dewatering section. The brackets are fixedly assembled with the inner wall of the housing. The rotating shaft, with bearings, is inserted between the two sets of brackets, and one end of the rotating shaft is connected to the drive motor. The dewatering roller assembly is mounted on the rotating shaft and rotates with the rotating shaft.

[0030] The dewatering roller assembly has two sets of turntables 24 and multiple pressure rollers 25 disposed between the two sets of turntables. The multiple pressure rollers are arranged at equal intervals along the circumference of the turntables (see...). Figure 3 The pressure roller squeezes the water-absorbing layer inside the housing. The two ends of the pressure roller are fixed to the turntable with bearings. The center of the turntable is mounted on the rotating shaft and rotates with the rotating shaft. The pressure roller rotates synchronously and can also rotate on its own. When the dewatering roller group rotates, the pressure roller rotates and rotates on its own to squeeze the water-absorbing layer.

[0031] The water collection shell covers the lower half of the shell, and its bottom surface is V-shaped, with a drain outlet 31 at the lowest point. The V-shaped bottom surface allows the dripping water to flow smoothly out of the drain outlet.

[0032] The first embodiment is a re-dehydration structure with one inlet and one outlet. However, some places require decentralized exhaust, so one inlet and two outlets are required. See Embodiment 2 for details. Example

[0033] This embodiment has a single intake and two exhaust systems compared to the first embodiment. The specific structure is as follows: Figures 4-5As shown, it includes a second housing 7, a rotary extrusion assembly 2, and a second water collection shell 8. The second housing has an air inlet 71 in the middle of its side wall and air outlets 72 at both ends. The outer wall of the housing has multiple through overflow holes, while the inner wall has a water absorption layer 4 (not provided at the air inlet). The air inlet is connected to the exhaust pipe of the wet scrubber in conjunction with the horn-shaped expansion pipe. The structure and layout of the rotary extrusion assembly in the housing are the same as in the first embodiment, so they will not be described in detail. The second water collection shell is located below the second housing to collect the overflowing water.

[0034] The second housing can be placed vertically or horizontally during use. When placed vertically, the second water collection housing is located below the lower air outlet. At this time, the side of the second water collection housing is provided with an exhaust port connected to the exhaust pipe 9. This does not affect the collection of overflowing water by the second water collection housing, nor does it affect the discharge of gas. If the second housing is placed horizontally, the two ends are directly connected to the exhaust pipe. The second water collection housing has a lower half covered by the second housing (similar to the structure of the first embodiment).

[0035] The present invention discloses a compression dehydration device that achieves secondary dehydration of exhaust air after wet dust removal, ensuring the dryness of the discharged gas. At the same time, the rotating compression component achieves continuous dehydration of the water-absorbing layer, ensuring the continuous use of the device.

[0036] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An expression dewatering device, characterized by: The application relates to a rotary extrusion type water collecting device, which comprises a shell, a rotary extrusion assembly and a water collecting shell, wherein the shell is a cylindrical structure, is provided with an air inlet and an air outlet, the air inlet is connected with a front end exhaust pipe through a trumpet-shaped expansion pipe, the air inlet is connected with the side with a larger outer diameter of the trumpet-shaped expansion pipe, a plurality of water overflow holes are arranged on the outer wall of the shell, a water absorbing layer is arranged on the inner wall of the shell, the rotary extrusion assembly is arranged in the shell, water is extruded from the water absorbing layer by a rotating dehydration roller, the water collecting shell is arranged below the shell to collect the overflowed water, the rotary extrusion assembly comprises two groups of supports, a rotating shaft, a driving motor and a dehydration roller group, the two groups of supports are arranged at the two ends of the shell, the rotating shaft is inserted between the two groups of supports through bearings, one end of the rotating shaft is connected with the driving motor, and the dehydration roller group is sleeved on the rotating shaft and rotates with the rotating shaft.

2. An apparatus for expressing water from a food product as claimed in claim 1 wherein: The air inlet and the air outlet are both one, the air inlet is located at one end of the shell, and the air outlet is located at the other end of the shell, so that one-way air inlet and one-way air outlet are realized.

3. An apparatus for expressing water from a plant as claimed in claim 1, wherein: The air inlet is one, and the air outlets are two, the air inlet is located at the middle position of the sidewall of the dehydration cylinder, and the two air outlets are located at the two ends of the shell, so that one-way air inlet and two-way air outlet are realized.

4. The apparatus of claim 1 wherein: The dehydration roller group comprises two groups of rotating discs and a plurality of pressing rollers arranged between the two groups of rotating discs, the pressing rollers are arranged at equal intervals along the circumferences of the rotating discs, the pressing rollers extrude the water absorbing layer in the shell, the two ends of the pressing rollers are fixed with the rotating discs through bearings, the rotating discs are sleeved on the rotating shaft and rotate with the rotating shaft, the pressing rollers rotate synchronously and can rotate independently.

5. An apparatus according to claim 2 or 3, wherein: The plurality of water overflow holes arranged on the outer wall of the shell are arranged in a horizontal and vertical matrix, and a drainage structure is further arranged on the outer wall of the shell to guide the overflowed water in the water overflow holes into the water collecting shell.

6. An apparatus according to claim 5, wherein: The drainage structure comprises a vertically arranged main drainage groove and a plurality of horizontally arranged drainage branch grooves, the drainage branch grooves are arranged in an inclined mode, the lowest points of the drainage branch grooves are communicated with the main drainage groove, and each drainage branch groove is located below each row of water overflow holes.

7. An apparatus according to claim 6, wherein: A flow guide groove is arranged between the water overflow holes and the drainage branch grooves.

8. The apparatus of claim 1 wherein: The shell is composed of two half-circular structures which are assembled by buckling.

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