Ammonia nitrogen pre-distillation device

Abstract

This solution discloses an ammonia nitrogen pre-distillation device in the field of pretreatment technology before the detection of harmful components in wastewater, comprising a round-bottom flask, the round-bottom flask comprising a bottle body and a bottleneck, the bottleneck being connected to a branch pipe that is detachably connected to the condenser; further comprising a cleaning assembly, the cleaning assembly comprising a lifting rod and a scraper connected to one end of the lifting rod, the scraper being evenly distributed with a number of air holes, the scraper being located in the bottleneck and the edge of the scraper being in contact with the inner wall of the bottleneck, the lifting rod sliding through the plug; a drain port being provided on the bottleneck, the drain port being located between the branch pipe and the bottle body, a sealing plug for sealing the drain port being provided at the drain port, the sealing plug being located at one end in the bottleneck being connected to a brush rod, the brush rod being evenly distributed with a number of bristles, the end of the bristles being in contact with the wall of the bottleneck. This solution can effectively prevent the branch pipe from being blocked, and can also prevent floating objects from entering the condenser. The structure is simple but the effect is outstanding, the operation of cleaning the foam can be carried out quickly, and does not affect the distillation process.

Description

Technical Field

[0001] The invention belongs to the technical field of pretreatment of wastewater before harmful components are detected, and in particular relates to an ammonia nitrogen pre-distillation device. Background Art

[0002] Testing for harmful components in wastewater before discharge is crucial for preventing environmental pollution. This application uses the example of ammonia nitrogen testing in medical wastewater. Ammonia nitrogen testing is a mandatory test item for medical wastewater. Ammonia nitrogen refers to nitrogen in the form of free ammonia (NH3) and ammonium ions (NH4) in water. Animal-derived organic matter generally contains more nitrogen than plant-derived organic matter. Furthermore, nitrogenous organic matter in human and animal feces is very unstable and easily decomposes into ammonia.

[0003] Third-party testing agencies usually use spectrophotometry to detect ammonia nitrogen in wastewater. The collected wastewater is first pre-distilled. The ammonia nitrogen in the wastewater is cooled with the steam in a boiling state to obtain a test water sample. Therefore, the pre-distillation device in the laboratory includes a round-bottom flask and a condenser connected to it. The wastewater is placed in the round-bottom flask and heated.

[0004] Wastewater, such as medical wastewater, often contains small floating particles. When the wastewater boils, these particles mix with the steam to form foam. These particles, suspended in the foam, can rise with the steam and easily clog the condenser at the connection point of the round-bottom flask, or even enter the condenser, affecting the distillate. The current solution to this problem is to add liquid paraffin to the wastewater, but this is not ideal, and more effective solutions are needed. Summary of the Invention

[0005] The present invention aims to provide an ammonia nitrogen pre-distillation device to solve the problem that small floating objects easily block the communication port during use of the pre-distillation device in the prior art.

[0006] An ammonia nitrogen pre-distillation device in this scheme includes a round-bottom flask and a condenser, the round-bottom flask includes a bottle body and a bottleneck, the bottleneck is connected to a branch pipe that is detachably connected to the condenser, the top of the bottleneck is provided with a feeding port, and the feeding port is provided with a plug; it also includes a cleaning component, the cleaning component includes a lifting rod and a scraper connected to one end of the lifting rod, the scraper is evenly distributed with a number of air holes, the scraper is located in the bottleneck and the edge of the scraper is in contact with the inner wall of the bottleneck, and the lifting rod slides through the plug; a sewage outlet is provided on the bottleneck, the sewage outlet is located between the branch pipe and the bottle body, and a sealing plug for sealing the sewage outlet is provided at the sewage outlet, and the end of the sealing plug located in the bottleneck is connected to a brush rod, and the brush rod is evenly distributed with a number of bristles, and the ends of the bristles are in contact with the wall of the bottleneck.

[0007] The working principle of this solution is as follows: During the distillation process, the lifting rod is lifted so that the scraper blade is above the highest level of the branch pipe. As the distillation progresses, floating matter rises into the bottleneck and is intercepted by the brush bristles when it contacts them. The bristles are dense, and as the floating matter increases, the floating matter is squeezed by itself and becomes trapped between and adheres to the bristles. If there is a lot of floating matter, and the highest point of the floating matter is observed to be close to the connection between the branch pipe and the bottleneck, the lifting rod is then pushed down. Since the scraper blade contacts the inner wall of the bottleneck, it pushes the foam formed by the floating matter downward, increasing the density of the floating matter. More floating matter is squeezed into and adheres to the bristles, thereby reducing the formation of foam and reducing or preventing it from returning to the bottom of the round-bottom flask.

[0008] After the ammonia nitrogen pre-distillation is completed, the sewage outlet is opened and a large amount of floating matter attached to the bristles is removed from the sewage outlet along with the bristles.

[0009] The beneficial technical effects of this solution are: when used in conjunction with the method described in the above principles, this solution can effectively prevent the branch pipe from being blocked and prevent floating objects from entering the condenser. The structure is simple but the effect is outstanding. The foam cleaning operation can be carried out quickly without affecting the distillation process.

[0010] Furthermore, the inner wall of the bottle neck is provided with a coaxial annular intercepting piece, located between the drain outlet and the bottle body. When cleaning foam, the annular intercepting piece can intercept the foam above it to a certain extent. As the scraper blade slides downward, the space between the scraper blade and the annular intercepting piece gradually decreases, which makes it easier for foam to be squeezed into the bristles and adhere to them.

[0011] Furthermore, the distance between the annular intercepting piece and the top of the bottle body is 8 to 12 cm.

[0012] Furthermore, the bottom of the scraper is tilted, with the lower end of the scraper close to the drain outlet. After the ammonia nitrogen pre-distillation is completed, the debris attached to the bottleneck wall flows along the tilted scraper toward the drain outlet, promoting the discharge of the debris.

[0013] Furthermore, the upper edge of the drain outlet is a chamfered edge, which promotes the debris or foam on the bottleneck wall to flow outward along the smooth edge of the drain outlet.

[0014] Furthermore, the bristles are nylon or PBT bristles. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a structural schematic diagram of Example 1 of an ammonia nitrogen pre-distillation device of the present invention;

[0016] Figure 2 This is a structural schematic diagram of Example 2 of an ammonia nitrogen pre-distillation device of the present invention. DETAILED DESCRIPTION

[0017] The following is further described in detail through specific implementation methods:

[0018] The reference numerals in the drawings of the specification include: stopper 1, bottleneck 2, branch pipe 3, condenser 4, bottle body 5, lifting rod 6, scraper 7, drain outlet 8, sealing plug 9, annular intercepting piece 10, brush rod 11, and bristles 12.

[0019] Example 1 is basically as shown in the attached Figure 1 As shown: an ammonia nitrogen pre-distillation device, including a round-bottom flask and a condenser 4, and also including a cleaning component. The round-bottom flask includes a bottle body 5 and a bottleneck 2. The bottleneck 2 is connected to a branch pipe 3 that is detachably connected to the condenser. A feeding port is provided at the top of the bottleneck 2. A plug 1 that can seal it is provided at the feeding port. The plug 1 is rotatable at the feeding port. The sealing plug 9 is located at one end inside the bottleneck 2 and is connected to a brush rod 11. A number of nylon bristles 12 are evenly distributed on the brush rod 11, and the ends of the bristles 12 are in contact with the wall of the bottleneck 2.

[0020] The cleaning assembly includes a lifting rod 6 and a scraper 7 connected to one end of the lifting rod 6. The scraper 7 is evenly distributed with a number of air holes. The scraper 7 is located within the bottle neck 2, with its edge abutting the inner wall of the bottle neck 2. The lifting rod 6 slides through the stopper 1. The bottle neck 2 is provided with a drain port 8, located between the branch pipe 3 and the bottle body 5. A sealing plug 9 is provided at the drain port 8 to seal the drain port 8. An annular intercepting piece 10 is coaxially provided on the inner wall of the bottle neck 2. The annular intercepting piece 10 is located between the drain port 8 and the bottle body 5, and the distance between the annular intercepting piece 10 and the top of the bottle body 5 is 8 to 12 cm. The upper edge of the drain port 8 is chamfered.

[0021] Example 2 is different from Example 1 in that Figure 2 As shown, the bristles 12 are made of PBT material, the bottom of the scraper 7 is tilted, and the lower end of the scraper 7 is close to the sewage outlet 8.

[0022] Taking Example 2 as an example, during the distillation process, the lifting rod 6 is lifted so that the scraper 7 is higher than the highest level of the branch pipe 3. As the distillation progresses, the floating matter rises into the bottleneck 2. When the floating matter contacts the bristles 12, it is intercepted by the bristles 12. The bristles 12 are dense, and as the floating matter increases, the floating matter is squeezed by itself and becomes sandwiched between the bristles 12 and adheres to the bristles 12. If there is a lot of floating matter, and the highest point of the floating matter can be observed near the connection between the branch pipe 3 and the bottleneck 2, then the lifting rod 6 is pushed down. Since the scraper 7 abuts against the inner wall of the bottleneck 2, the scraper 7 pushes the foam formed by the floating matter downward, increasing the density of the floating matter. More floating matter is squeezed into the bristles 12 and adheres to the bristles 12, thereby reducing the formation of foam and reducing or preventing it from returning to the bottom of the round-bottom flask.

[0023] The brush rod 11 can also be rotated by rotating the sealing plug 9, so that the bristles 12 are in greater contact with the foam formed by the floating objects. After the ammonia nitrogen pre-distillation is completed, the sewage outlet 8 is opened, and the large amount of floating objects attached to the bristles 12 are removed from the sewage outlet 8 along with the bristles 12. The lifting rod 6 is pushed downward, and the scraper 7 scrapes off the less foam on the bottleneck 2, and flows along the inclined scraper 7 to the sewage outlet 8 for discharge.

Claims

1. An ammonia nitrogen pre-distillation apparatus, comprising a round-bottom flask and a condenser, wherein the round-bottom flask comprises a body and a neck, the neck of the flask is connected to a branch pipe that is detachably connected to the condenser, and the top of the neck of the flask is provided with a feed port, which is provided with a stopper; characterized in that: It also includes a cleaning component, which includes a lifting rod and a scraper connected to one end of the lifting rod, with a number of air holes evenly distributed on the scraper, the scraper is located in the bottleneck and the edge of the scraper is in contact with the inner wall of the bottleneck, and the lifting rod slides through the plug; a drain outlet is provided on the bottleneck, the drain outlet is located between the branch pipe and the bottle body, and a sealing plug for sealing the drain outlet is provided at the drain outlet, and a brush rod is connected to one end of the sealing plug located in the bottleneck, and a number of bristles are evenly distributed on the brush rod, and the ends of the bristles are in contact with the wall of the bottleneck; an annular intercepting piece coaxial with the inner wall of the bottleneck is provided, and the annular intercepting piece is located between the drain outlet and the bottle body; the bottom of the scraper is tilted, and the lower end of the scraper is close to the drain outlet; the bristles are nylon or PBT bristles.

2. An ammonia nitrogen pre-distillation device according to claim 1, characterized in that: The distance between the annular intercepting piece and the top of the bottle body is 8 to 12 cm.

3. An ammonia nitrogen pre-distillation device according to claim 1 or 2, characterized in that: The upper edge of the sewage outlet is a chamfered edge.

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