Pig raising wastewater air floatation tank

Abstract

The utility model provides a pig raising wastewater air floatation tank, which comprises a water tank, a scum scraping mechanism and a drainage pipe, the water tank is sequentially divided into an inlet water channel, a sewage area and a drainage area from the head to the tail, the scum scraping mechanism is arranged at the top of the sewage area, a scum discharge groove for collecting scum is arranged in front of the scum scraping mechanism, and the drainage pipe is fixedly arranged in the drainage area; an adjusting device is mounted on the drainage pipe; the adjusting device is composed of a fixing piece, a screw rod, a nut and a cover plate. The fixing piece is fixedly installed above a water inlet in the top of the drainage pipe, and the nut is fixedly installed on the fixing piece. A cover plate is arranged at the bottom of the screw rod and right faces a water inlet in the top of the drainage pipe. According to the utility model, the sewage liquid level can be adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of sewage treatment equipment, and specifically relates to a pig wastewater air floatation tank. BACKGROUND

[0002] The air floatation tank is a kind of sewage treatment equipment, which scrapes and collects the scum floating on the surface of sewage by using a slag scraping mechanism.

[0003] The existing air floatation equipment mainly uses mechanical slag scraping, that is, using a motor as power to drive a scraper through gears and chains to make the scraper reciprocate and scrape away the scum on the surface of the air floatation tank.

[0004] However, before the wastewater system is formally operated, the thickness of the scum layer is not known, and during the operation, the thickness of the scum layer may vary, and due to the error of civil construction, the water level and the installation height of the slag scraping mechanism are difficult to match accurately. UTILITY MODEL CONTENT

[0005] The utility model aims at the problems in the prior art and provides a pig wastewater air floatation tank capable of adjusting the height of the sewage liquid level.

[0006] To achieve the above-mentioned purpose, the utility model adopts the following technical solutions:

[0007] A pig wastewater air floatation tank comprises a water tank, a slag scraping mechanism and a drain pipe.

[0008] An adjusting device is installed on the drain pipe. The adjusting device comprises a fixing part, a screw rod, a nut and a cover plate. The fixing part is fixedly installed above the water inlet on the top of the drain pipe. The nut is fixedly installed on the fixing part. The screw rod is threadedly connected with the nut. The bottom of the screw rod is provided with the cover plate. The cover plate is opposite to the water inlet on the top of the drain pipe.

[0009] Further, a hand wheel is arranged on the top of the screw rod.

[0010] Further, a motor is drivingly connected with the top of the screw rod.

[0011] Further, a liquid level detecting device is arranged on the slag discharge groove.

[0012] The utility model discloses a pig wastewater air floatation tank, through adjusting device, adjusting drainage speed can control the liquid level of sewage, make the position of dregs just cooperate the work of scraping dregs mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is the structural schematic diagram of a pig wastewater air floatation tank of the utility model embodiment one.

[0014] Figure 2 It is the structural schematic diagram of embodiment two. DETAILED DESCRIPTION

[0015] The technical scheme of the utility model will be explained in detail below in combination with the drawings and specific embodiments.

[0016] Embodiment one

[0017] As Figure 1 Shown, the utility model provides a pig wastewater air floatation tank, including water tank 1, scraping dregs mechanism 2 and drain pipe 3, water tank 1 is by head to tail in turn by baffle and divide into inlet waterway 11, sewage area 12 and drainage area 13, scraping dregs mechanism 2 installs at the top of sewage area 12, and the front of scraping dregs mechanism 2 is equipped with the drain slot for collecting dregs, and drain pipe 3 is fixedly installed in drainage area 13.

[0018] Adjusting device 4 is installed on drain pipe 3;Adjusting device 4 is by fixed part 41, screw rod 42, nut 43 and apron 44 are formed;Fixed part 41 is fixedly installed on the water inlet of the top of drain pipe 3, and nut 43 is fixedly installed on fixed part 41;Screw rod 42 is connected with nut 43 by screw thread, and the bottom of screw rod 42 is equipped with apron 44, and apron 44 is just for the water inlet of the top of drain pipe 3.

[0019] All the above components are preferably made of stainless steel to prevent corrosion by sewage.

[0020] The working principle of the application is: when the rotating screw rod 42, can drive apron 44 up and down movement, adjust the distance with the water inlet of drain pipe 3, so that the area of the water inlet of drain pipe 3 changes, thereby adjusting the water inlet resistance, changes the drainage capacity. When the resistance increases, the drainage capacity decreases, and the liquid level of the sewage will rise, just touch the scraper of scraping dregs mechanism 2, applicable to the case that the amount of sewage is small, or the thickness of dregs is small;When the resistance decreases, the drainage capacity increases, and the liquid level of the sewage will drop, applicable to the case that the amount of sewage is more, or the thickness of dregs is larger.

[0021] As a preferred, in order to facilitate manual operation, in the embodiment, the top of the screw rod 42 is provided with a hand wheel 45. The operator can rely on observation, manually rotate the hand wheel 45 to adjust the liquid level of the sewage, so as to cooperate with the scraping dregs mechanism 2.

[0022] Embodiment two

[0023] The only difference between this embodiment and embodiment one is that the adjusting device 4 adopts an automatic scheme.

[0024] Specifically, the top of the screw rod 42 is drivingly connected with a motor 46. The motor 46 can rotate the screw rod 42 electrically, thereby realizing automatic liquid level adjustment.

[0025] In order to further improve the degree of automation, preferably, the slag discharge groove is provided with a liquid level detection device 47. The liquid level detection device 47 can monitor the sewage liquid level in real time. When the liquid level is too high, the motor 46 drives the screw rod 42 to rotate to raise the cover plate 44 to help the sewage to be discharged to reduce the liquid level; when the liquid level is too low, the motor 46 drives the screw rod 42 to rotate to lower the cover plate 44 to increase the water outlet resistance to raise the liquid level. And the liquid level detection device 47 helps unmanned management. When the liquid level is too high or too low, the motor 46 still cannot complete the adjustment, an alarm can be sent to notify the operator to handle.

[0026] The adjusting device 4 provided by the utility model can adjust the liquid level, so that the liquid level and the slag scraping mechanism 2 are in the best matching state, and accurate slag scraping can be realized without adjusting the position of the slag scraping plate. The problem of mismatching between the installation height of the slag scraping mechanism 2 and the liquid level caused by the error of civil construction is well compensated. The utility model has low cost, small size and convenient installation, and is especially suitable for small-sized air flotation systems.

[0027] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but it cannot be understood as the limitation of the patent range of the utility model. It should be pointed out that for ordinary skilled persons in the art, several deformations and improvements can be made without departing from the concept of the utility model, and these all belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A flotation tank for pig farm wastewater, comprising a water tank, a sludge scraping mechanism and a drain pipe, wherein the water tank is divided into an inlet channel, a sewage zone and a drainage zone by partitions from head to tail, the sludge scraping mechanism is installed on the top of the sewage zone, a sludge discharge trough for collecting sludge is provided in front of the sludge scraping mechanism, and the drain pipe is fixedly installed in the drainage zone. Its features are: An adjusting device is installed on the drain pipe; the adjusting device consists of a fixing part, a screw, a nut and a cover plate; the fixing part is fixedly installed above the water inlet at the top of the drain pipe, and the nut is fixedly installed on the fixing part; the screw and the nut are threadedly connected, and a cover plate is provided at the bottom of the screw, with the cover plate facing the water inlet at the top of the drain pipe.

2. The air flotation tank for pig farm wastewater according to claim 1, characterized in that: The top of the screw is equipped with a handwheel.

3. The air flotation tank for pig farm wastewater according to claim 1, characterized in that: A motor is connected to the top of the screw.

4. The pig wastewater flotation tank according to claim 3, characterized in that: The slag discharge tank is equipped with a liquid level detection device.

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