A mechanical defoaming device for a wastewater treatment aeration system

Abstract

This utility model discloses a mechanical defoaming device for a wastewater treatment aeration system, relating to the field of wastewater treatment technology. It includes a mechanical defoamer, with a suspension and lifting assembly and a guide and reinforcement assembly positioned above it. The suspension and lifting assembly provides suspension support for the mechanical defoamer and simultaneously enables height adjustment. The guide and reinforcement assembly guides the vertical movement of the mechanical defoamer and reinforces its position. This utility model allows for convenient height adjustment of the mechanical defoamer through the suspension and lifting assembly. Simultaneously, the reinforcement and locking mechanism of the guide and reinforcement assembly, combined with the self-locking structure of the worm gear inside the screw jack, enables position locking of the mechanical defoamer, ensuring stable operation.

Description

Technical Field

[0001] This utility model relates to the field of wastewater treatment technology, specifically a mechanical defoaming device for a wastewater treatment aeration system. Background Technology

[0002] Foaming is a common problem in wastewater treatment aeration systems. Foam not only affects the treatment effect (hindering oxygen transfer, reducing microbial activity, and affecting sludge settling), but it can also overflow into the tank, causing environmental pollution, corroding equipment, and affecting the aesthetics of the operating environment.

[0003] Defoaming strategies, taking into account the causes of foam formation, typically employ a comprehensive approach that combines physical methods, chemical methods, and biological / process control methods. Among these, mechanical defoamers (demisters) are a commonly used physical defoaming device. Their core principle is to use mechanical force to break down the foam structure, achieve gas-liquid separation, and avoid the pollution or side effects that chemical defoamers may cause.

[0004] The working principle of commonly used mechanical defoamers is as follows:

[0005] The high-speed operation of the impeller generates suction, which draws the foam through the inlet to the working area of ​​the high-speed rotating impeller. The centrifugal force generated by the impeller throws the bubbles toward the wall of the container, where they break apart into liquid upon impact.

[0006] In actual use, the suction port of the centrifugal defoamer needs to be kept at a certain height (generally 15-30cm) from the liquid surface:

[0007] If the height is too high, it will increase the suction resistance, preventing the foam from being effectively drawn in, which in turn reduces the defoaming efficiency;

[0008] If the height is too low, liquid will be drawn in when the liquid surface fluctuates, leading to impeller corrosion / motor overload;

[0009] Ideally, the suction port should always be located in the middle of the foam layer (avoiding the liquid below and the air above).

[0010] Therefore, when installing and using a mechanical defoamer, the height needs to be adjusted according to the liquid level inside the wastewater aeration tank. Based on this, a mechanical defoaming device for a wastewater treatment aeration system is provided. Utility Model Content

[0011] The purpose of this utility model is to provide a mechanical defoaming device for a wastewater treatment aeration system in order to solve the problems mentioned above.

[0012] To achieve the above objectives, the present invention provides the following technical solution: a mechanical defoaming device for a wastewater treatment aeration system, comprising a mechanical defoamer, wherein a suspension lifting assembly is provided above the mechanical defoamer, the suspension lifting assembly providing suspension support for the mechanical defoamer and simultaneously realizing the height lifting operation of the mechanical defoamer;

[0013] The suspension and lifting assembly includes a support plate, a support column, a top seat, a screw jack, and a lifting screw.

[0014] The support columns are provided in four ways. The four support columns are arranged in a rectangular shape and fixed to the top of the support plate. The top seat is fixed to the top of the four support columns. The screw lifter is installed in the middle of the top of the top seat. The lifting screw passes through the upper and lower ends of the screw lifter and passes through the top seat, the support plate and is fixedly connected to the top of the outer frame of the mechanical defoamer.

[0015] The support plate is fixedly installed with the bracket at the top of the wastewater aeration tank to realize the suspension installation of the mechanical defoamer. The operation of the screw lifter drives the lifting screw to lift and lower to realize the height adjustment of the mechanical defoamer.

[0016] The top seat is also provided with a guide and reinforcement component that connects the support plate to the outer frame of the mechanical defoamer. The guide and reinforcement component is used to guide the up and down movement of the mechanical defoamer and to reinforce the position of the mechanical defoamer.

[0017] As a further improvement of this utility model: the guide reinforcement component includes a guide screw and a fastening nut;

[0018] Two guide screws are symmetrically arranged around the lifting screw. The two guide screws pass through the top of the top seat, the support plate, and are fixedly connected to the top of the outer frame of the mechanical defoamer. The top seat and the support plate are provided with through holes for the vertical limiting and sliding of the guide screws, which are used to guide the lifting and lowering movement of the mechanical defoamer.

[0019] The fastening nuts are arranged vertically around the top seat and threadedly connected to the outside of the guide screw. By tightening the two fastening nuts, they are respectively attached to the upper and lower surfaces of the top seat, and are used to fix the height of the guide screw.

[0020] As a further improvement of this utility model, the guide reinforcement component also includes a convex rod, a concave hook, and a spring;

[0021] The top seat has symmetrical telescopic grooves on both sides. The convex rod is distributed inside the telescopic groove and extends to the outside of the top seat and is fixedly connected to the concave hook. The spring is distributed inside the telescopic groove and sleeved on the outside of the convex rod, and is used to provide the convex rod with a thrust to the guide screw.

[0022] When the concave hooks are vertically distributed, the upper and lower horizontal parts are respectively hooked onto the upper and lower ends of the handwheel parts of the two fastening nuts, which is used to lock the up and down movement of the two fastening nuts.

[0023] As a further improvement of this utility model, the contact length between the horizontal part of the concave hook and the fastening nut is less than the length of the horizontally movable convex rod.

[0024] As a further embodiment of this utility model: the handwheel portion of the fastening nut protrudes to the outside of the concave hook and does not contact the screw jack or the lifting screw, and the height of the support column is greater than the height of the handwheel portion of the fastening nut.

[0025] Compared with the prior art, the beneficial effects of this utility model are:

[0026] The height of the mechanical defoamer can be easily adjusted by setting up a suspension lifting component. At the same time, the position of the mechanical defoamer can be locked by the reinforcement and locking of the guide and reinforcement component, in conjunction with the self-locking structure of the worm gear inside the screw lift, so that the mechanical defoamer can maintain a stable operation. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this utility model;

[0028] Figure 2 This is a structural schematic diagram of the guide reinforcement component of this utility model in its unreinforced state;

[0029] Figure 3 This is a partial disassembly diagram of the guide and reinforcement component of this utility model.

[0030] In the diagram: 1. Mechanical defoamer; 2. Suspension lifting assembly; 201. Support plate; 202. Support column; 203. Top seat; 204. Telescopic groove; 205. Screw lifter; 206. Lifting screw; 3. Guide and reinforcement assembly; 301. Guide screw; 302. Fastening nut; 303. Convex rod; 304. Concave hook; 305. Spring. Detailed Implementation

[0031] 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.

[0032] Please see Figures 1-3In this embodiment of the present invention, a mechanical defoaming device for a wastewater treatment aeration system includes a mechanical defoamer 1, and a suspension lifting assembly 2 is provided above the mechanical defoamer 1. The suspension lifting assembly 2 provides suspension support for the mechanical defoamer 1 and realizes the height lifting operation of the mechanical defoamer 1.

[0033] The suspension lifting assembly 2 includes a support plate 201, a support column 202, a top seat 203, a screw jack 205, and a lifting screw 206;

[0034] Four support columns 202 are provided, and the four support columns 202 are fixed to the top of the support plate 201 in a rectangular distribution. The top seat 203 is fixed to the top of the four support columns 202. The screw lifter 205 is installed in the middle of the top of the top seat 203. The lifting screw 206 passes through the upper and lower ends of the screw lifter 205 and passes through the top seat 203, the support plate 201 and is fixedly connected to the top of the outer frame of the mechanical defoamer 1.

[0035] The support plate 201 is fixedly installed with the bracket at the top of the wastewater aeration tank to realize the suspension installation of the mechanical defoamer 1. The screw jack 205 drives the lifting screw 206 to lift and lower to realize the height adjustment of the mechanical defoamer 1.

[0036] The top seat 203 is also provided with a guide and reinforcement component 3 that connects the support plate 201 to the outer frame of the mechanical defoamer 1. The guide and reinforcement component 3 is used to provide guidance for the up and down movement of the mechanical defoamer 1 and to reinforce the position of the mechanical defoamer 1.

[0037] The guide reinforcement component 3 includes a guide screw 301 and a fastening nut 302;

[0038] Two guide screws 301 are symmetrically arranged around the lifting screw 206. The two guide screws 301 pass through the top of the top seat 203, the support plate 201 and are fixedly connected to the top of the outer frame of the mechanical defoamer 1. The top seat 203 and the support plate 201 are provided with through holes for the vertical limiting and sliding of the guide screws 301, which are used to guide the lifting and lowering movement of the mechanical defoamer 1.

[0039] The fastening nut 302 is set vertically around the top seat 203 and threadedly connected to the outside of the guide screw 301. The two fastening nuts 302 are tightened and respectively attached to the upper and lower surfaces of the top seat 203 to fix the height of the guide screw 301.

[0040] The guide reinforcement component 3 also includes a convex rod 303, a concave hook 304, and a spring 305;

[0041] The top seat 203 has symmetrical telescopic grooves 204 on both sides of the top. The convex rods 303 are distributed inside the telescopic grooves 204 and extend to the outside of the top seat 203 and are fixedly connected to the concave hooks 304. The springs 305 are distributed inside the telescopic grooves 204 and sleeved on the outside of the convex rods 303, and are used to provide the convex rods 303 with a thrust to the guide screw 301.

[0042] When the concave hooks 304 are vertically distributed, the upper and lower horizontal parts are respectively hooked onto the upper and lower ends of the handwheel parts of the two fastening nuts 302, which are used to lock the up and down movement of the two fastening nuts 302.

[0043] In this embodiment, it should be noted that the mechanical defoamer 1 is a common type of mechanical defoamer on the market (such as ZHFRD-A mechanical defoamer and FGFRD-A mechanical defoamer), and its operating principle is the same: the high-speed operation of the impeller generates suction, which draws the foam through the inlet to the working area of ​​the high-speed rotating impeller. The centrifugal force generated by the impeller throws the bubbles toward the wall of the device, and the bubbles break in the impact, causing them to break into liquid. Therefore, the specific structure and operation of the mechanical defoamer 1 will not be described in detail here.

[0044] When in use, this mechanical defoamer 1 is installed above the wastewater aeration tank via the suspension lifting assembly 2. Its support plate 201 is fixed to the bracket above the wastewater aeration tank by bolts or welding. (It should be noted that a walkway is provided above the wastewater aeration tank for workers to walk on, which facilitates the installation and operation of the suspension lifting assembly 2.)

[0045] Under normal circumstances, the upper and lower sets of fastening nuts 302 of the guide and reinforcement component 3 are respectively attached to the upper and lower ends of the top seat 203, and the concave hooks 304 are engaged with the upper and lower ends of the handwheel portion on the two sets of fastening nuts 302 (e.g., Figure 1 With the internal worm gear self-locking structure of the screw jack 205, the position of the mechanical defoamer 1 can be locked, so that the mechanical defoamer 1 can maintain a stable operation.

[0046] When the mechanical defoamer 1 needs to be adjusted according to the liquid level inside the wastewater aeration tank, the operating steps are as follows:

[0047] First, manually pull the concave hook 304 to move it horizontally. The concave hook 304 drives the convex rod 303 to move and compress the spring 305 to further contract. After the concave hook 304 is completely separated from the handwheel part on the fastening nut 302, rotate the concave hook 304 to rotate 90 degrees, and then release the pull on the concave hook 304. At this time, the convex rod 303 returns to its original position under the action of the spring 305, thus releasing the limit on the fastening nut 302.

[0048] Next, loosen the fastening nut 302. For example, if the mechanical defoamer 1 needs to be adjusted downwards, adjust the upper fastening nut 302 upwards (e.g.). Figure 2 If it is necessary to adjust the mechanical defoamer 1 upward, adjust the lower fastening nut 302 downward to release the lock on the guide screw 301;

[0049] Then, by operating the handwheel of the screw jack 205, the lifting screw 206 can be raised or lowered, thereby adjusting the height of the mechanical defoamer 1 (it should be noted that the screw jack 205 is a mature product on the market, and its internal structure and operating principle will not be described in detail here).

[0050] After the height of the mechanical defoamer 1 is adjusted, tighten the fastening nut 302. Then, reset the concave hook 304 to limit the upper and lower sets of fastening nuts 302. The overall operation is simple and convenient.

[0051] Please refer to this carefully. Figures 1-3 The contact length between the concave hook 304 and the fastening nut 302 is less than the horizontally movable length of the convex rod 303.

[0052] In this embodiment: This structure provides sufficient travel for the movement of the concave hook 304, so that the concave hook 304 can be completely separated from the handwheel portion of the fastening nut 302.

[0053] Please refer to this carefully. Figures 1-3 The handwheel portion of the fastening nut 302 protrudes to the outside of the concave hook 304 and does not contact the screw jack 205 or the lifting screw 206. The height of the support column 202 is greater than the height of the handwheel portion of the fastening nut 302.

[0054] In this embodiment: This structure ensures that the tightening and loosening of the fastening nut 302 will not interfere with the screw lifter 205, and there is sufficient height between the support plate 201 and the top seat 203 to allow the lower fastening nut 302 to be loosened.

[0055] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A mechanical defoaming device for a wastewater treatment aeration system, comprising a mechanical defoamer (1), characterized in that, A suspension lifting assembly (2) is provided above the mechanical defoamer (1). The suspension lifting assembly (2) provides suspension support for the mechanical defoamer (1) and realizes the height lifting operation of the mechanical defoamer (1). The suspension lifting assembly (2) includes a support plate (201), a support column (202), a top seat (203), a screw jack (205), and a lifting screw (206). Four support columns (202) are provided, and the four support columns (202) are fixed to the top of the support plate (201) in a rectangular distribution. The top seat (203) is fixed to the top of the four support columns (202). The screw lifter (205) is installed in the middle of the top of the top seat (203). The lifting screw (206) passes through the upper and lower ends of the screw lifter (205) and passes through the top seat (203), the support plate (201) and is fixedly connected to the top of the outer frame of the mechanical defoamer (1). The support plate (201) is fixedly installed with the bracket at the top of the wastewater aeration tank to realize the suspension installation of the mechanical defoamer (1). The screw lifter (205) drives the lifting screw (206) to lift and lower to realize the height adjustment of the mechanical defoamer (1). The top seat (203) is also provided with a guide and reinforcement component (3) that connects the support plate (201) and the outer frame of the mechanical defoamer (1). The guide and reinforcement component (3) is used to provide guidance for the up and down movement of the mechanical defoamer (1) and to reinforce the position of the mechanical defoamer (1).

2. The mechanical defoaming device for a wastewater treatment aeration system according to claim 1, characterized in that, The guide reinforcement component (3) includes a guide screw (301) and a fastening nut (302); Two guide screws (301) are symmetrically arranged around the lifting screw (206). The two guide screws (301) pass through the top of the top seat (203) and the support plate (201) and are fixedly connected to the top of the outer frame of the mechanical defoamer (1). The top seat (203) and the support plate (201) are provided with through holes for the vertical limit sliding of the guide screws (301) to guide the lifting and lowering movement of the mechanical defoamer (1). The fastening nut (302) is set up vertically around the top seat (203) and threaded to the outside of the guide screw (301). The two fastening nuts (302) are tightened to fit the upper and lower surfaces of the top seat (203) respectively, and are used to fix the height of the guide screw (301).

3. The mechanical defoaming device for a wastewater treatment aeration system according to claim 2, characterized in that, The guide reinforcement component (3) also includes a convex rod (303), a concave hook (304), and a spring (305); The top seat (203) has symmetrical expansion grooves (204) on both sides of the top. The convex rod (303) is distributed inside the expansion groove (204) and extends to the outside of the top seat (203) and is fixedly connected to the concave hook (304). The spring (305) is distributed inside the expansion groove (204) and sleeved on the outside of the convex rod (303) to provide the convex rod (303) with a thrust to the guide screw (301). When the concave hook (304) is vertically distributed, the upper and lower horizontal parts are respectively hooked to the upper and lower ends of the handwheel part of the two fastening nuts (302) to lock the up and down movement of the two fastening nuts (302).

4. The mechanical defoaming device for a wastewater treatment aeration system according to claim 3, characterized in that, The contact length between the transverse portion of the concave hook (304) and the fastening nut (302) is less than the length of the horizontal movement of the convex rod (303).

5. The mechanical defoaming device for a wastewater treatment aeration system according to claim 3, characterized in that, The handwheel portion of the fastening nut (302) protrudes to the outside of the concave hook (304) and does not contact the screw jack (205) or the lifting screw (206). The height of the support column (202) is greater than the height of the handwheel portion of the fastening nut (302).

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