Jet flow negative pressure type air stripping device

Abstract

The invention relates to the technical field of sewage treatment, and discloses a jet flow negative pressure type air stripping device which comprises a base, a sewage pressurization mechanism and an air stripping tower are installed on the left side and the right side of the upper surface of the base respectively, and a strong gas-liquid mixture is jetted into the air stripping tower through the sewage pressurization mechanism; the top of the air stripping tower is externally connected with a suction fan through an air pipe, and a scattering mechanism is mounted on the outer wall of the air stripping tower. A heating cylinder is arranged in a heating assembly, filtered sewage is directly heated, the temperature of the sewage is increased, the mass transfer process of NHH from a liquid phase to a gas phase is accelerated, the ammonia nitrogen volatilization efficiency is remarkably improved, the sewage flows through a gap between a sleeve and the heating cylinder and an inner cavity of the heating cylinder in a double-path mode, and high-pressure sewage and air are injected into a gas mixing chamber through a high-pressure pump and an air pump; the gas-liquid mixture is sprayed to a water collector at the bottom of the air stripping tower through a diffusion pipe, a large number of fine bubbles are generated, the gas-liquid contact area is increased, NHH desorption is promoted, and the jet flow negative pressure design is matched with a top suction fan to form a negative pressure environment.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment, and specifically provides a jet negative pressure stripping device. Background Art

[0002] High ammonia nitrogen wastewater such as landfill leachate and chemical wastewater causes great harm to the environment and is difficult to treat. To meet the increasing requirements of the public for environmental quality, the state has formulated increasingly strict discharge standards for ammonia nitrogen. Developing economic and efficient denitrification technologies has become the focus and hotspot in the field of industrial wastewater treatment.

[0003] Currently, the practical methods for treating ammonia nitrogen wastewater mainly include ammonia stripping method, ammonia blowing method, breakpoint chlorination method, ion exchange method and biological treatment method. At present, several ammonia nitrogen removal methods are not satisfactory. Comparatively speaking, the ammonia blowing process is more feasible. The high ammonia nitrogen blowing treatment principle is mainly based on the gas-liquid equilibrium theory and the mass transfer rate theory. Under alkaline conditions, NH3-N in the wastewater exists in the form of ammonium (NH4+) and free ammonia (NH3). When the pH value is alkaline, NH4+ will be converted into NH3, and then through the stripping action of steam or air, NH3 in the wastewater is desorbed and converted into the gas phase, thus achieving the removal of ammonia nitrogen.

[0004] During the blowing operation, the temperature of the sewage stays at the ambient temperature, which is relatively low, resulting in a low mass transfer rate and a low NH3 volatilization efficiency. In addition, the scattered water mist will form a water film on the surface of the corrugated plate in the stripping tower, allowing NH3 hidden in the sewage to escape. For some water films with high surface tension, it is difficult to break in a short time, which will affect the number of water film formations and reduce the stripping efficiency. Summary of the Invention

[0005] The purpose of the present invention is to provide a jet negative pressure stripping device to at least solve the problems in the prior art such as low sewage temperature, low stripping mass transfer rate, and inability to promote the formation of water films.

[0006] To achieve the above purpose, the present invention provides the following technical solution: a jet negative pressure stripping device, including a base, on the upper surface of which a sewage pressurizing mechanism and a stripping tower are respectively installed on the left and right sides. A strong gas-liquid mixture is sprayed into the stripping tower through the sewage pressurizing mechanism. The top of the stripping tower is externally connected to a suction fan through a trachea, and a dispersing mechanism is installed on the outer wall of the stripping tower. The sewage pressurizing mechanism includes a support seat installed on the left side of the upper surface of the base. On the left and right sides of the upper surface of the support seat, a high-pressure pump and a gas mixing chamber are respectively installed. The water outlet of the high-pressure pump is connected to the gas mixing chamber through a water pipe. High-pressure sewage is added to the gas mixing chamber by the high-pressure pump. One end of a diffusion pipe is installed on the right side of the gas mixing chamber, and the other end of the diffusion pipe is connected to the bottom of the stripping tower. A heating component is installed at the water inlet of the high-pressure pump to heat the sewage through the heating component. The input end of the heating component is installed with a filter, and the filter is connected to the sewage tank through a water pipe. The filter filters the sewage and then transports it to the heating component. An air pump is installed at the rear side of the upper surface of the support seat. The air outlet of the air pump is connected to the gas mixing chamber through an air pipe to add high-pressure air to the gas mixing chamber to mix the gas with the sewage.

[0007] Preferably, the heating component includes a sleeve installed at the water inlet of the high-pressure pump. A joint is installed on the left side of the outer wall of the sleeve and is connected to the filter. A heating cylinder is installed at the central position of the inner wall of the sleeve. A resistance wire is built into the heating cylinder to heat the sewage passing through the heating cylinder. A rotatable rotating unit is installed at the central position on the left side of the sleeve through a bearing. A first gear is installed at the left end of the rotating unit. A driver meshingly connected to the first gear is installed on the outer wall of the sleeve. The heating cylinder is electrified to increase the temperature, allowing the sewage to pass through the gap between the sleeve and the heating cylinder and the inner cavity of the heating cylinder. The sewage is heated through heat exchange to achieve sewage heating.

[0008] Preferably, the rotating unit includes a rotating shaft rotatably installed at the central position on the left side of the sleeve through a bearing, and the left end of the rotating shaft is connected to the first gear. A base is installed at the right end of the rotating shaft. A guide rod is installed on the right side of the inner cavity of the base. Two sets of front and rear symmetrically arranged scraping plates are sleeved on the outer wall of the guide rod. When the scraping plates rotate, the scale attached to the outer wall of the heating cylinder is scraped off by the scraping plates. A support rod is horizontally installed at the central position of the inner cavity of the base. Rotatable rotating plates are installed on both the left and right sides of the support rod. Guide grooves are opened at the front and rear ends of the outer wall of the rotating plate. A pin inserted into the inner cavity of the guide groove is installed at the left end of the scraping plate. A torsion spring is sleeved in the middle of the outer wall of the support rod, and the two rotating plates are driven to rotate in opposite directions under the action of the torsion force of the torsion spring. Under the action of the torsion force of the torsion spring, the two rotating plates rotate in opposite directions. Through the extrusion of the guide groove and the pin, the scraping plate can be in contact with the surface of the heating cylinder. When the scraping plate rotates, the scale on the surface of the heating cylinder is removed to prevent the heat exchange of the sewage from being affected.

[0009] Preferably, the guide groove is arc-shaped, and the two guide grooves coincide after rotating 180 degrees relative to the center point of the rotating plate.

[0010] Preferably, the dispersion mechanism includes a box body installed on the outer wall of the stripping tower. A traction assembly is arranged in the inner cavity of the box body. A telescopic assembly is installed at the rear of the box body. Pushing plates are equidistantly installed from left to right at the rear of the telescopic assembly. The telescopic assembly is driven by the traction assembly to move, so that the pushing plates move back and forth in the stripping tower.

[0011] Preferably, the pushing plates are inclined and made of silicone material.

[0012] Preferably, the traction assembly includes two sprockets respectively installed on the front and rear sides of the inner cavity of the box body through pin shafts. A second motor for driving the sprockets to rotate is installed on the right side wall of the box body. A chain is connected to the outer walls of the sprockets. One end of a connecting rod is connected to the outer wall of the chain through a pin shaft, and the other end of the connecting rod is connected to the front end of the traction assembly through a pin shaft; By virtue of the fact that the moving directions of the upper and lower parts of the chain are opposite, the chain can be used to pull the connecting rod to move back and forth, serving as the traction power for the telescopic assembly.

[0013] Preferably, the length of the connecting rod is greater than the height of the chain.

[0014] Preferably, the telescopic assembly includes a limit sleeve installed at the rear end of the box body. A sliding plate capable of sliding back and forth is inserted into the inner cavity of the limit sleeve. The front end of the sliding plate is connected to the rear end of the connecting rod through a pin shaft. An installation rod is horizontally installed at the rear end of the sliding plate, and the bottom of the installation rod is connected to the top of the pushing plate.

[0015] A jet negative pressure type stripping device proposed by the present invention has the following beneficial effects: I. High - efficiency heating and anti - scaling design to improve the ammonia - nitrogen volatilization efficiency: 1. Optimization of sewage heating and heat exchange: The heating component is internally provided with a heating cylinder (including resistance wires) to directly heat the filtered sewage, increase the sewage temperature, accelerate the mass transfer process of NH3 from the liquid phase to the gas phase, significantly improve the ammonia - nitrogen volatilization efficiency. The sewage flows through the double paths of the gap between the sleeve and the heating cylinder and the inner cavity of the heating cylinder, expanding the heat exchange area to ensure the temperature - rising effect.

[0016] 2. Automatic descaling function: The rotating unit drives the scraper to rotate around the heating cylinder through the meshing transmission of the first gear and the driver. The cooperation of the torsion spring and the arc - shaped guide groove enables the scraper to always fit the surface of the heating cylinder, avoiding the accumulation of scale and affecting the heat exchange efficiency, ensuring the stable temperature rise of the sewage, and reducing the need for cyclic stripping due to insufficient temperature.

[0017] II. Strengthening gas - liquid mixing and water film breaking to improve the stripping efficiency: 1. Powerful gas-liquid mixed injection: The high-pressure pump and air pump inject high-pressure sewage and air into the mixing chamber to form a gas-liquid mixture, which is sprayed to the water collector at the bottom of the stripping tower through the diffusion tube, generating a large number of fine bubbles, increasing the gas-liquid contact area, and promoting NH3 desorption. The jet negative pressure design cooperates with the top suction fan to form a negative pressure environment, accelerating the separation of NH3 from the sewage and discharging it out of the tower.

[0018] 2. Efficient water film breaking and regeneration: The breaking mechanism drives the sprocket chain through the second motor, driving the connecting rod to pull the slide plate to move back and forth, so that the inclined silicone push plate moves back and forth in the blow-off tower. The shape of the push plate matches the gap of the corrugated plate. The high elasticity is used to break up the stubborn water film with large tension, promote the rapid formation of new water film, increase the gas-liquid contact interface, and improve the blow-off efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the present invention; Figure 2 This is the main cross-sectional view of the stripping tower; Figure 3 It is a schematic diagram of the heating component structure; Figure 4 It is a front cross-sectional view of the heating component; Figure 5 It is a top view cross-sectional view of the rotating unit; Figure 6 is a schematic diagram of the rotating plate structure; Figure 7 It is the left view of the dismantling mechanism; Figure 8 It is a schematic diagram of the push plate structure.

[0020] In the figure: 1, base; 2, sewage pressurizing mechanism; 3, stripping tower; 4, dispersing mechanism; 21, support base; 22, high pressure pump; 23, gas mixing chamber; 24, diffusion tube; 25, heating assembly; 26, filter; 27, air pump; 251, sleeve; 252, joint; 253, heating cylinder; 254, rotating unit; 255, first gear; 256, driver; 2541, rotating shaft; 2542, base; 2543, guide rod; 2544, scraper; 2545, Support rod; 2546, rotating plate; 2547, guide groove; 2548, latch; 2549, torsion spring; 2561, first motor; 2562, second gear; 31, tower body; 32, water outlet pipe; 33, corrugated plate; 34, water collector; 41, box body; 42, traction assembly; 43, telescopic assembly; 44, push plate; 421, sprocket; 422, second motor; 423, chain; 424, connecting rod; 431, limit sleeve; 432, slide plate; 433, mounting rod. DETAILED DESCRIPTION

[0021] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0022] Please refer to Figures 1 - 8 , the present invention provides a technical solution: a jet negative pressure stripping device, including a base 1, on the upper surface of the base 1, a sewage pressurizing mechanism 2 and a stripping tower 3 are respectively installed on the left and right sides. A strong gas-liquid mixture is sprayed into the stripping tower 3 through the sewage pressurizing mechanism 2. The top of the stripping tower 3 is externally connected to a suction fan through a trachea, and a dispersing mechanism 4 is installed on the outer wall of the stripping tower 3; The sewage pressurizing mechanism 2 includes a support seat 21 installed on the left side of the upper surface of the base 1. On the upper surface of the support seat 21, a high-pressure pump 22 and a gas mixing chamber 23 are respectively installed. The water outlet of the high-pressure pump 22 is connected to the gas mixing chamber 23 through a water pipe. High-pressure sewage is added to the gas mixing chamber 23 by the high-pressure pump 22. One end of a diffusion pipe 24 is installed on the right side of the gas mixing chamber 23, and the other end of the diffusion pipe 24 is connected to the bottom of the stripping tower 3. A heating component 25 is installed at the water inlet of the high-pressure pump 22 to heat the sewage through the heating component 25. A filter 26 is installed at the input end of the heating component 25, and the filter 26 is connected to the sewage tank through a water pipe. The filter 26 filters the sewage and then transports it to the heating component 25. An air pump 27 is installed at the rear side of the upper surface of the support seat 21. The air outlet of the air pump 27 is connected to the gas mixing chamber 23 through a trachea to add high-pressure air into the gas mixing chamber 23 to mix the gas with the sewage; The stripping tower 3 includes a tower body 31 installed on the right side of the upper surface of the base 1, and the bottom of the tower body 31 is connected to the diffusion pipe 24. A water outlet pipe 32 is installed at the bottom of the right side wall of the tower body 31. A corrugated plate 33 and a water collector 34 are respectively installed at the upper and lower ends of the inner cavity of the tower body 31. The corrugated plate 33 expands the contact area and can form a water film on the surface of the corrugated plate 33. When the high-pressure gas-water mixture impacts the water collector 34, the generated bubbles are made finer, and at the same time, the water collector 34 collects the sewage.

[0023] As a preferred solution, further, the heating assembly 25 includes a sleeve 251 installed at the water inlet of the high-pressure pump 22. A connector 252 is installed on the left side of the outer wall of the sleeve 251, and the connector 252 is connected to the filter 26. A heating cylinder 253 is installed at the central position of the inner wall of the sleeve 251. A resistance wire is built into the heating cylinder 253 to heat the sewage passing through the heating cylinder 253. A rotatable rotating unit 254 is installed at the central position of the left side of the sleeve 251 through a bearing. A first gear 255 is installed at the left end of the rotating unit 254. A driver 256 meshingly connected to the first gear 255 is installed on the outer wall of the sleeve 251.

[0024] As a preferred solution, further, the rotating unit 254 includes a rotating shaft 2541 rotatably installed at the central position of the left side of the sleeve 251 through a bearing, and the left end of the rotating shaft 2541 is connected to the first gear 255. A base 2542 is installed at the right end of the rotating shaft 2541. A guide rod 2543 is installed on the right side of the inner cavity of the base 2542. Two sets of symmetrically arranged front and rear scraping plates 2544 are sleeved on the outer wall of the guide rod 2543. When the scraping plates 2544 rotate, scale attached to the outer wall of the heating cylinder 253 is scraped off by the scraping plates 2544. A support rod 2545 is horizontally installed at the central position of the inner cavity of the base 2542. Rotatable rotating plates 2546 are installed on both the left and right sides of the support rod 2545. Guide grooves 2547 are formed at both the front and rear ends of the outer wall of the rotating plate 2546. The guide grooves 2547 are arc-shaped, and the two guide grooves 2547 coincide after rotating 180 degrees relative to the center point of the rotating plate 2546. When the rotating plate 2546 rotates, the inclined surfaces of the guide grooves 2547 can squeeze two pins 2548 to move inward or outward simultaneously. A pin 2548 inserted into the inner cavity of the guide groove 2547 is installed at the left end of the scraping plate 2544. A torsion spring 2549 is sleeved on the middle part of the outer wall of the support rod 2545. Under the action of the torsion of the torsion spring 2549, the two rotating plates 2546 are driven to rotate in opposite directions.

[0025] As a preferred solution, further, the dispersion mechanism 4 includes a box body 41 installed on the outer wall of the stripping tower 3. A traction assembly 42 is arranged in the inner cavity of the box body 41. A telescopic assembly 43 is installed at the rear of the box body 41. Pushing plates 44 are equidistantly installed at the rear of the telescopic assembly 43 from left to right. The telescopic assembly 43 is driven to move by the traction assembly 42, so that the pushing plates 44 move back and forth in the stripping tower 3.

[0026] As a preferred solution, further, the pushing plate 44 is inclined and made of silica gel material. The shape of the pushing plate 44 matches the gap between the corrugated plates 33. Utilizing the high elastic characteristics of the pushing plate 44, the stubborn water film structure on the surface of the corrugated plates 33 can be destroyed when the pushing plate 44 moves.

[0027] As a preferred solution, further, the traction assembly 42 includes two sprockets 421 respectively installed on the front and rear sides of the inner cavity of the box body 41 through pin shafts. A second motor 422 for driving the rotation of the sprocket 421 is installed on the right side wall of the box body 41. The outer wall of the sprocket 421 is chain-connected with a chain 423. One end of a connecting rod 424 is connected to the outer wall of the chain 423 through a pin shaft, and the other end of the connecting rod 424 is connected to the front end of the traction assembly 42 through a pin shaft. The length of the connecting rod 424 is greater than the height of the chain 423. When the chain 423 pulls the connecting rod 424, it prevents the connecting rod 424 from rotating too much and changing the traction effect on the sliding plate 432.

[0028] As a preferred solution, further, the telescopic assembly 43 includes a limit sleeve 431 installed at the rear end of the box body 41. A sliding plate 432 that can slide back and forth is inserted into the inner cavity of the limit sleeve 431. The front end of the sliding plate 432 is connected to the rear end of the connecting rod 424 through a pin shaft. A mounting rod 433 is horizontally installed at the rear end of the sliding plate 432, and the bottom of the mounting rod 433 is connected to the top of the push plate 44.

[0029] As a preferred solution, further, the driver 256 includes a first motor 2561 installed on the outer wall of the sleeve 251. A second gear 2562 meshingly connected with the first gear 255 is installed at the output end of the first motor 2561.

[0030] The detailed connection means are well-known technologies in the art. The following mainly introduces the working principle and process, and the specific work is as follows.

[0031] Step 1, under the suction of the high-pressure pump 22, the sewage enters the sleeve 251 after being filtered by the filter 26. The sewage passes through the gap between the sleeve 251 and the heating cylinder 253 and the inner cavity of the heating cylinder 253. The heating cylinder 253 is electrified to increase the temperature and heat the passing sewage. After heating, the sewage is pressurized and enters the air mixing chamber 23. At the same time, the air pump 27 injects air into the air mixing chamber 23 to mix the gas with the sewage, and then sprays it onto the water collector 34 through the diffusion pipe 24 to make the two mix evenly and completely, generating a large number of fine bubbles. The temperature rise of the sewage improves the NH3 volatilization efficiency. In the tower body 31, the air rises in the water body in the form of fine bubbles through the corrugated plate 33 to make the sewage and air mix more fully, increasing the contact area and forming a water film. The suction fan quickly extracts the generated NH3 under the suction force, and the sewage after stripping is discharged through the water outlet pipe 32; In Step 2, affected by the temperature of the heating cylinder 253, impurities such as minerals in the sewage will form scale on the surface of the heating cylinder 253, inhibiting the heat exchange with the sewage. Under the action of its own torsion force, the torsion spring 2549 causes the two rotating plates 2546 to rotate in opposite directions. As a result, the inclined surface of the guide groove 2547 on the left rotating plate 2546 presses the bolt 2548 inward, while the inclined surface of the guide groove 2547 on the right rotating plate 2546 presses the bolt 2548 outward. Thus, the scraping plate 2544 contacts the inner and outer walls of the heating cylinder 253. The first motor 2561 drives the second gear 2562 to rotate. Under the transmission condition of the second gear 2562 and the first gear 255, the base 2542 rotates, and then the scraping plate 2544 rotates around the heating cylinder 253. The scraping plate 2544 scrapes the scale on the outer wall of the heating cylinder 253, preventing the heat exchange of the sewage from being blocked and ensuring the heating efficiency of the sewage. In Step 3, when the water film tension on the corrugated plate 33 is large and cannot be eliminated to regenerate the water film, the second motor 422 drives the sprocket 421 to rotate, causing the chain 423 to pull the connecting rod 424 to move. Since the upper and lower parts of the chain 423 move in opposite directions, the connecting rod 424 can pull the sliding plate 432 to reciprocate back and forth, enabling the pushing plate 44 to break the water film on the corrugated plate 33 and improving the stripping efficiency of the sewage.

[0032] Although the embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A jet negative pressure stripping device, comprising a base (1), characterized in that, A sewage pressurizing mechanism (2) and a blow-off tower (3) are respectively installed on the left and right sides of the upper surface of the base (1), and a strong gas-liquid mixture is sprayed into the blow-off tower (3) through the sewage pressurizing mechanism (2). The top of the blow-off tower (3) is externally connected to a suction fan through an air pipe, and a dispersing mechanism (4) is installed on the outer wall of the blow-off tower (3); The sewage pressurizing mechanism (2) comprises a support seat (21) mounted on the left side of the upper surface of the base (1); a high-pressure pump (22) and an aeration chamber (23) are mounted on the left and right sides of the upper surface of the support seat (21), respectively; a water outlet of the high-pressure pump (22) is connected to the aeration chamber (23) via a water pipe; high-pressure sewage is added to the aeration chamber (23) by means of the high-pressure pump (22); one end of a diffusion pipe (24) is mounted on the right side of the aeration chamber (23); the other end of the diffusion pipe (24) is connected to the bottom of the stripping tower (3); the high-pressure pump (22) is connected to the bottom of the stripping tower (3); and 22) A heating component (25) is installed at the water inlet, and sewage is heated by the heating component (25). A filter (26) is installed at the input end of the heating component (25), and the filter (26) is connected to the sewage pool through a water pipe. The filter (26) filters the sewage and then transports it to the heating component (25). An air pump (27) is installed on the rear side of the upper surface of the support seat (21). The air outlet of the air pump (27) is connected to the mixing chamber (23) through an air pipe, and high-pressure air is added to the mixing chamber (23) to mix the gas with the sewage.

2. The jet negative pressure stripping device according to claim 1, characterized in that, The heating assembly (25) comprises a sleeve (251) mounted at the water inlet of the high-pressure pump (22); a joint (252) is mounted on the left side of the outer wall of the sleeve (251), and the joint (252) is connected to the filter (26); a heating cylinder (253) is mounted at the center of the inner wall of the sleeve (251); a resistance wire is built into the heating cylinder (253) so that the heating cylinder (253) heats the sewage passing through; a rotatable rotating unit (254) is mounted at the center of the left side of the sleeve (251) via a bearing; a first gear (255) is mounted at the left end of the rotating unit (254); and a driver (256) meshingly connected to the first gear (255) is mounted on the outer wall of the sleeve (251).

3. The jet negative pressure stripping device according to claim 2, characterized in that, The rotating unit (254) includes a rotating shaft (2541) that is rotatably mounted at the center position on the left side of the sleeve (251) through bearings, and the left end of the rotating shaft (2541) is connected to the first gear (255). A base (2542) is installed at the right end of the rotating shaft (2541). A guide rod (2543) is installed on the right side inside the cavity of the base (2542). Two sets of front and rear symmetric scraping plates (2544) are sleeved on the outer wall of the guide rod (2543). When the scraping plates (2544) rotate, scale adhering to the outer wall of the heating cylinder (253) is scraped off by the scraping plates (2544). A support rod (2545) is horizontally installed at the center position inside the cavity of the base (2542). Rotating plates (2546) that can rotate are installed on both the left and right sides of the support rod (2545). Guide grooves (2547) are formed at both the front and rear ends of the outer wall of the rotating plate (2546). A pin (2548) that is inserted into the inner cavity of the guide groove (2547) is installed at the left end of the scraping plate (2544). A torsion spring (2549) is sleeved on the middle part of the outer wall of the support rod (2545). Under the action of the torsion of the torsion spring (2549), the two rotating plates (2546) are driven to rotate in opposite directions.

4. The jet negative pressure stripping device according to claim 3, characterized in that, The guide groove (2547) is arc-shaped, and the two guide grooves (2547) coincide after rotating 180 degrees relative to the center point of the rotating plate (2546).

5. The jet negative pressure stripping device according to claim 4, characterized in that, The dispersion mechanism (4) includes a box body (41) installed on the outer wall of the stripping tower (3). A traction assembly (42) is arranged inside the cavity of the box body (41). A telescopic assembly (43) is installed at the rear of the box body (41). Pushing plates (44) are equidistantly installed from left to right at the rear of the telescopic assembly (43). By the traction of the traction assembly (42), the telescopic assembly (43) moves, so that the pushing plates (44) move back and forth inside the stripping tower (3).

6. The jet negative pressure stripping device according to claim 5, characterized in that, The pushing plate (44) is inclined and made of silica gel material.

7. The jet negative pressure stripping device according to claim 6, characterized in that, The traction assembly (42) includes two sprockets (421) respectively installed on the front and rear sides inside the cavity of the box body (41) through pins. A second motor (422) for driving the sprocket (421) to rotate is installed on the right side wall of the box body (41). A chain (423) is chain-connected to the outer wall of the sprocket (421). One end of a connecting rod (424) is connected to the outer wall of the chain (423) through a pin, and the other end of the connecting rod (424) is connected to the front end of the traction assembly (42) through a pin.

8. The jet negative pressure stripping device according to claim 7, characterized in that, The length of the connecting rod (424) is greater than the height of the chain (423).

9. The jet negative pressure stripping device according to claim 8, wherein, The telescopic assembly (43) includes a limit sleeve (431) installed at the rear end of the box body (41). A sliding plate (432) that can slide back and forth is inserted into the inner cavity of the limit sleeve (431). The front end of the sliding plate (432) is connected to the rear end of the connecting rod (424) through a pin. An installation rod (433) is horizontally installed at the rear end of the sliding plate (432), and the bottom of the installation rod (433) is connected to the top of the pushing plate (44).

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