A defoaming device

Abstract

This utility model discloses a defoaming device, including a mounting plate. A top shell is fixed to the upper surface of the mounting plate, and a cylinder is fixed to the lower surface of the mounting plate. A motor is fixed to the upper surface of the top shell, and a drive shaft is fixed to the bottom output end of the motor. An impeller is fixedly connected to the drive shaft through the top shell and the mounting plate. A trumpet tube is fixed to the bottom end of the cylinder, and a sleeve is rotatably connected to the bottom end surface of the trumpet tube via a bearing. In this utility model, a mounting plate, a cylinder, a motor, a drive shaft, an impeller, a trumpet tube, a sleeve, a bend, a protruding pin, and a linkage assembly are provided. The motor drives the drive shaft and impeller to rotate, thereby generating suction force, which draws the foam on the surface of the sewage into the trumpet tube and the cylinder along the bend. The foam breaks upon impact with the protruding pin and is then thrown out from the drain port. During this process, the motor also drives the bend to rotate, causing the bottom of the bend to continuously adjust its position, thereby increasing the foam suction range and thus improving the defoaming efficiency.

Description

Technical Field

[0001] This utility model relates to the field of wastewater defoaming technology, and in particular to a defoaming device. Background Technology

[0002] Wastewater treatment defoaming devices are used to remove or suppress foam generated during wastewater treatment, and are widely used in the treatment of industrial wastewater, municipal sewage, and other wastewater. Their working principle primarily involves disrupting foam stability through physical or chemical methods, such as mechanical stirring, water jet impact, ultrasonic vibration, or the addition of defoaming agents, effectively eliminating foam interference with the treatment system. This device prevents secondary pollution caused by foam overflow, ensures the normal operation of aeration tanks, sedimentation tanks, and other units, and improves wastewater treatment efficiency. Common types include rotary defoamers, nozzle-type defoaming systems, and automatic dosing defoaming devices.

[0003] A search revealed that patent CN221093820U discloses a wastewater treatment defoaming device. The device uses a moving rod to drive a sleeve rod to rotate, and a stirring block to break up and eliminate the foam, which is then discharged from the drain port. When the moving rod is moved downward, it can drive the ring to rotate, causing the scraper to scrape the inner wall of the shell, making it easier to clean the impurities attached to the inner wall of the shell.

[0004] The aforementioned defoaming device, like the rotary defoamers already in use in production, suffers from the following drawbacks: the device is fixed to the top of the wastewater tank, and the foam suction port is in a fixed position, limiting its ability to defoam only within a very small area, resulting in low defoaming efficiency. Therefore, further improvement is needed. To this end, we propose a new defoaming device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a defoaming device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a defoaming device, comprising a mounting plate, a top shell fixed to the upper surface of the mounting plate, a cylinder fixed to the lower surface of the mounting plate, a motor fixed to the upper surface of the top shell, a drive shaft fixed to the bottom output end of the motor, an impeller fixedly connected to the drive shaft through the top shell and the mounting plate, a horn tube fixed to the bottom end of the cylinder, a sleeve rotatably connected to the bottom end surface of the horn tube via a bearing, a detachable bent tube fixedly connected to the bottom end of the sleeve, a plurality of protruding pins fixed to the lower surface of the impeller, and a linkage assembly rotatably connected through and to the side of the mounting plate, wherein the motor drives the sleeve to rotate via the linkage assembly.

[0007] Furthermore, the mounting plate has multiple mounting holes on its side.

[0008] Furthermore, multiple bends are provided, and each bend has a different length. The bends and sleeves are fixedly connected by flanges.

[0009] Furthermore, the side wall of the cylinder is provided with multiple drainage ports.

[0010] Furthermore, the linkage component includes a driven shaft that passes through the mounting plate and is rotatably connected to the mounting plate via a bearing. A driving gear is fixed at the bottom end of the driven shaft, and a driven gear is fixedly connected to the surface of the sleeve. The driven gear meshes with the driving gear.

[0011] Furthermore, the driven shaft has a driven pulley fixedly connected to its top end inside the top shell, and a driving pulley is fixedly attached to the surface of the driving shaft. A belt is fitted onto the surfaces of the driving pulley and the driven pulley.

[0012] The beneficial effects of this utility model are:

[0013] 1. In use, this utility model includes an installation plate, a cylinder, a motor, a drive shaft, an impeller, a trumpet tube, a sleeve, a bend, a protruding pin, and a linkage assembly. The motor drives the drive shaft and impeller to rotate, thereby generating suction. This suction draws the foam on the surface of the wastewater into the trumpet tube and the cylinder along the bend. The foam breaks upon impact with the protruding pin and is then ejected from the drain outlet. During this process, the motor also drives the bend to rotate, causing the bottom of the bend to continuously adjust its position, thereby increasing the foam suction range and thus improving the defoaming efficiency.

[0014] 2. In use, this utility model is equipped with a sleeve and a bend, and the bend and the sleeve are detachably connected, which makes it easy to replace the bend with different lengths, thereby improving the flexibility of the device. Attached Figure Description

[0015] To more clearly illustrate the technical solution of this utility model, the drawings used in the description of the specific embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This is a perspective view of the entire utility model;

[0017] Figure 2 This is an overall sectional view of the present invention;

[0018] Figure 3 For the present utility model Figure 2 Enlarged view of point A in the middle.

[0019] The attached figures are labeled as follows:

[0020] 1. Mounting plate; 2. Top shell; 3. Cylinder; 301. Drain port; 4. Motor; 5. Drive shaft; 6. Impeller; 7. Trumpet tube; 8. Sleeve; 9. Bend; 10. Protruding pin; 11. Driven gear; 12. Linkage assembly; 121. Driven shaft; 122. Driven gear; 123. Driven pulley; 124. Belt; 13. Driven pulley. Detailed Implementation

[0021] 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 skilled in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1-3 As shown, a defoaming device is disclosed, comprising a mounting plate 1, a top shell 2 fixed to the upper surface of the mounting plate 1, a cylinder 3 fixed to the lower surface of the mounting plate 1, a motor 4 fixed to the upper surface of the top shell 2, a drive shaft 5 fixed to the bottom output end of the motor 4, an impeller 6 fixedly connected to the drive shaft 5 through the top shell 2 and the mounting plate 1, a horn tube 7 fixed to the bottom end of the cylinder 3, a sleeve 8 rotatably connected to the bottom surface of the horn tube 7 via a bearing, a detachable bent tube 9 fixedly connected to the bottom end of the sleeve 8, a plurality of protruding pins 10 fixed to the lower surface of the impeller 6, a linkage assembly 12 rotatably connected through the side of the mounting plate 1, and the motor 4 driving the sleeve 8 to rotate via the linkage assembly 12.

[0023] The mounting plate 1 has multiple mounting holes on one side.

[0024] In this embodiment, the mounting holes on the mounting plate 1 correspond to the mounting holes on the sewage tank. Bolts are screwed into the mounting holes to secure the mounting plate 1. During installation, the device is placed at the center of the top of the sewage tank.

[0025] Multiple bends 9 are provided, and each bend 9 has a different length. The bends 9 and the sleeves 8 are fixedly connected by flanges.

[0026] For different usage environments or needs, a bend 9 of appropriate length can be selected and fixed to the bottom of the sleeve 8.

[0027] Multiple drain ports 301 are provided on the side wall of the cylinder 3.

[0028] When the motor 4 drives the impeller 6 to rotate, a negative pressure is generated inside the horn tube 7 and the bend tube 9, which draws the foam on the surface of the sewage into the bend tube 9. After the foam enters the horn tube 7 along the bend tube 9, it is punctured by the protruding needle 10 on the lower surface of the impeller 6. As the impeller 6 rotates, the water droplets generated by the puncture are discharged from the drain port 301.

[0029] The linkage assembly 12 includes a driven shaft 121 that passes through the mounting plate 1 and is rotatably connected to the mounting plate 1 via a bearing. A drive gear 122 is fixed at the bottom end of the driven shaft 121. A driven gear 11 is fixedly connected to the surface of the sleeve 8. The driven gear 11 meshes with the drive gear 122.

[0030] With the meshing action of the driving gear 122 and the driven gear 11, the driven shaft 121 can drive the driven gear 11 and the sleeve 8 to rotate.

[0031] The driven shaft 121 is located inside the top shell 2 and is fixedly connected to a driven pulley 123. The driving shaft 5 is fixedly connected to a driving pulley 13. The driving pulley 13 and the driven pulley 123 are both fitted with a belt 124.

[0032] When the motor 4 drives the drive shaft 5 to rotate, it will also drive the drive pulley 13 to rotate. The drive pulley 13 drives the driven pulley 123 to rotate through the belt 124, which in turn drives the driven shaft 121 to rotate, and then the driven shaft 121 drives the sleeve 8 to rotate.

[0033] Working principle: The device is installed at the center of the top of the sewage tank via mounting plate 1, with the bottom of the bend 9 less than 10cm from the sewage. Then, motor 4 is started, directly driving impeller 6 to rotate. This creates negative pressure inside the horn tube 7 and bend 9, drawing foam from the sewage surface into bend 9. The foam enters the horn tube 7 along bend 9 and is punctured by the protruding needles on the lower surface of impeller 6. As impeller 6 rotates, the resulting water droplets are discharged from drain port 301. During this process, motor 4 also drives sleeve 8 and bend 9 to rotate via linkage component 12, continuously adjusting the position of the bottom of bend 9 to increase the range of foam suction and thus improve foam elimination efficiency.

[0034] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to any specific implementation. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A device for defoaming, comprising a mounting plate (1), characterised in that: A top shell (2) is fixed on the upper surface of the mounting plate (1), a cylinder (3) is fixed on the lower surface of the mounting plate (1), a motor (4) is fixed on the upper surface of the top shell (2), a drive shaft (5) is fixed at the bottom output end of the motor (4), an impeller (6) is fixedly connected to the drive shaft (5) through the top shell (2) and the mounting plate (1), a horn tube (7) is fixed at the bottom end of the cylinder (3), a sleeve (8) is rotatably connected to the bottom surface of the horn tube (7) through a bearing, a detachable bent tube (9) is fixedly connected to the bottom end of the sleeve (8), a number of protruding pins (10) are fixed on the lower surface of the impeller (6), a linkage assembly (12) is rotatably connected through the side of the mounting plate (1), and the motor (4) drives the sleeve (8) to rotate through the linkage assembly (12).

2. A device according to claim 1, characterised in that: The mounting plate (1) has multiple mounting holes on its side.

3. A device according to claim 1, wherein: Multiple bends (9) are provided, and each bend (9) has a different length. The bends (9) and the sleeves (8) are fixedly connected by flanges.

4. The defoaming device according to claim 1, characterized in that: The side wall of the cylinder (3) is provided with multiple drain ports (301).

5. The defoaming device according to claim 1, characterized in that: The linkage assembly (12) includes a driven shaft (121) that passes through the mounting plate (1) and is rotatably connected to the mounting plate (1) via a bearing. A drive gear (122) is fixed at the bottom end of the driven shaft (121). A driven gear (11) is fixedly connected to the surface of the sleeve (8). The driven gear (11) meshes with the drive gear (122).

6. The defoaming device according to claim 5, characterized in that: The driven shaft (121) is located inside the top shell (2) and is fixedly connected to a driven pulley (123). The driving shaft (5) is fixed with a driving pulley (13). The driving pulley (13) and the driven pulley (123) are both fitted with a belt (124).

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