CN204206871U - For ammonia decontamination and the gathering unit of breeding house - Google Patents

Abstract

The utility model belongs to an ammonia purification and collection device for breeding houses, which comprises a water curtain box arranged outside the roof of the livestock and poultry breeding house and an exhaust hood arranged inside the roof and connected to the water curtain box through a connecting pipe. There is a water tank at the bottom of the curtain box, and a wet curtain plate is arranged in the water tank, and an annular water pipe is arranged above the wet curtain plate, and a ventilating plate is arranged on the outside of the wet curtain plate, and a water inlet and an outlet are arranged under the ventilating plate. The water replenishment port is provided with a float switch in the water tank, and the float switch is connected to the water inlet. The bottom of the connecting pipe is provided with an inner air pipe and an outer air pipe, and there are air grooves on both sides of the bottom of the outer air pipe. The utility model does not need to provide any power. The production cost and maintenance cost are low. The wet curtain in the device absorbs ammonia, which effectively reduces the concentration of ammonia in the breeding house, optimizes the environment in the breeding house, and reduces the pollution of the atmosphere caused by ammonia emissions from the breeding house. The water curtain box The amount of water inside is kept constant, which can continuously and stably absorb ammonia gas.

Description

Ammonia purification and collection unit for breeding houses

technical field

The utility model belongs to a gas collection device, in particular to an ammonia gas purification and collection device for breeding houses.

Background technique

With the rapid development of animal husbandry in my country, the scale, intensification and mechanization of livestock farms are gradually increasing, but environmental disputes often occur in animal husbandry villages and large-scale breeding houses. The air pollution in livestock and poultry farms mainly comes from the odorous gases emitted in the farms. After the fermentation of livestock and poultry manure and sewage, a large amount of harmful gases such as ammonia will be produced, resulting in an increase in ammonia emissions per unit area in the breeding house. Ammonia gas not only easily causes animal stress, greatly affects the growth rate and feed-to-meat ratio of livestock and poultry, but also seriously pollutes the environment. production and life. Especially in winter and spring when the climate is cold, in order to improve the thermal insulation effect of livestock and poultry breeding houses, most farmers close the doors and windows to reduce ventilation. The ammonia content in livestock and poultry breeding houses will be higher, which seriously affects the The normal growth of livestock and poultry has caused the economic loss of the farmers, and once the ventilation is done randomly, the temperature in the house will change too much, which will easily cause the livestock and poultry to catch a cold, and also cause a waste of heating and heat preservation energy.

Ammonia in the air of livestock and poultry breeding houses mainly comes from the digestion of livestock and poultry intestines and stomachs, the corruption of organic matter such as feces and urine, feed residues and bedding, and the decomposition of body waste by bacteria. It is a colorless, toxic, and strong pungent odor gas. , the lowest concentration that can be felt is 5.3ppm, and ammonia gas is produced faster when the litter is wet, the pH is suitable, the temperature is high, and there is a lot of feces. The content of ammonia in livestock and poultry houses depends on the stocking density, ventilation, ground structure, feeding management level, and manure removal. The aqueous solution of ammonia gas is alkaline and irritating to mucous membranes. In severe cases, alkali burns can occur, which can cause tearing, burning pain, inflammation of the cornea and conjunctiva, and visual impairment. Ammonia entering the respiratory tract can cause cough, tracheitis, bronchitis, pulmonary edema and hemorrhage, dyspnea, and suffocation. Ammonia has reducing properties, and the hydrogen atoms in its molecules can be replaced by metals one by one to form metal amides or nitrides. Therefore, ammonia enters the blood from the alveoli and can combine with hemoglobin to change heme into methaemoglobin. Reduce the oxygen-carrying capacity of hemoglobin, the blood alkali storage and the oxidation performance of heme, resulting in anemia and tissue hypoxia. Ammonia is a recognized stress source and the most harmful gas in livestock and poultry houses. Ammonia can induce various respiratory diseases in poultry, pigs and other animals, and can induce or increase the incidence of broiler ascites. /kg ammonia concentration, will reduce the animal's resistance to infection. According to measurements, when the concentration of ammonia in the chicken house reaches 20mg/L, the incidence of various common diseases and frequently-occurring diseases will suddenly increase. As a result, the egg production of chickens will be reduced, and the weight gain and feed utilization efficiency of chicks will be greatly reduced. A poultry farm with a scale of 560,000 can discharge 10.5kg of ammonia gas per hour, and a pig farm with an annual output of 80,000 pigs can discharge more than 130kg of ammonia gas into the atmosphere per hour, and excessive ammonia gas emissions not only Caused a large amount of feed resource waste, and increased environmental pressure.

For this reason, the following studies have been carried out on the control of reducing ammonia content in livestock and poultry breeding houses. Research 1: By reasonably controlling the intake of protein in livestock and poultry diets, reducing the amount of amino acids under the catalysis of spoilage microorganisms urease and uricase The amount of ammonia gas produced by hydrolysis, and at the same time adding zeolite powder, bentonite and other silicates, fermented carbohydrates, enzyme preparations, plant extracts, etc. Sprinkle ferrous sulfate in manure slabs or septic tanks to inhibit the fermentation and decomposition of manure, or add live bacteria preparations, thereby effectively reducing the concentration of ammonia; Study 3: By increasing the height of livestock and poultry breeding houses, installing micro-current antibacterial and antibacterial Ammonia system, ammonium sulfate recovery system and other methods to reduce ammonia gas in livestock and poultry breeding houses.

Although these research results have a certain effect on the elimination and purification of ammonia in livestock and poultry breeding houses, the operation is complicated, or the investment is too large, and the energy consumption is too much, which is not conducive to the popularization and application in the vast number of livestock and poultry breeding houses. In the existing livestock and poultry breeding houses, the density of ammonia gas is lower than that of air, it is distributed in the upper part of the livestock and poultry breeding houses, and it is easily soluble in water. The ammonia gas purification and collection device used in the breeding houses is used to collect and purify ammonia. Most of the existing ammonia collection devices used in breeding houses have complex structures and are not easy to operate. The water circulation system for collecting ammonia is poor, which seriously affects the collection effect of ammonia, and cannot achieve low ammonia in modern livestock and poultry breeding houses. gas content requirements.

Utility model content

The purpose of the utility model is to overcome the deficiencies in the prior art and provide an ammonia gas purification and collection device for breeding houses. Ammonia passes through the wet curtain plate in the water curtain box and quickly dissolves in the water curtain, which greatly reduces the ammonia content in the livestock and poultry house and reduces the ammonia emission from the livestock and poultry house to the air.

The purpose of this utility model is achieved in that:

An ammonia purification and collection device for breeding houses, comprising a water curtain box arranged on the outside of the roof of the livestock and poultry breeding house and an exhaust hood arranged on the inside of the roof and connected to the water curtain box through a connecting pipe, characterized in that: The bottom of the water curtain box is provided with a water curtain box base, and the outside of the water curtain box is composed of two parallel front air-permeable panels and two parallel side air-permeable panels. There is a tripod on the top of the tank, a top plate on the top of the tripod, a water inlet and a water outlet under the side ventilating plate, a water supply port above the side venting plate, a water tank at the bottom of the water curtain box, and an annular water channel around the water tank , there is a wet curtain plate in the annular water channel, an annular water pipe is arranged on the wet curtain plate, a water hole is arranged at the bottom of the annular water pipe, the annular water pipe is connected to the water supply port, a float switch is arranged in the water tank, and the float switch is connected to the water inlet. An inner air pipe is arranged at the bottom of the connecting pipe, an outer air pipe is arranged outside the inner air pipe, and air grooves are arranged on both sides of the bottom of the outer air pipe, and the outer air pipe communicates with the air groove.

The base of the water curtain box includes a bottom plate arranged at the bottom of the water curtain box, a vertical plate vertically connected to the outer end of the bottom plate, a panel connected to the bottom of the vertical plate and arranged on the roof, and the bottom of the water curtain box and the bottom plate are fixedly connected by bolts, The panel is fixedly connected to the C-shaped steel on the roof of the livestock and poultry house through the round head screw, and the surface of the base is coated with a layer of zinc.

The tripod includes a strut and a strut vertically connected to the strut, and the angle between the strut and the top plate is 15°-30°.

Ventilation holes are arranged on the ventilation plate, and the opening direction of the ventilation holes is downward.

The annular waterway includes an inner waterway and an outer waterway, and the distance between the inner waterway and the outer waterway is 2CM-3CM.

The thickness of the wet curtain plate is 3CM-5CM.

The inside of the water curtain box is made of iron material, and the outside is made of stainless steel.

The top plate is composed of an upper layer and a lower layer, and the two layers are overlapped and welded to form a double-slope structure, and the surface of the outer layer is provided with an antirust coating.

The upper part of the inner air duct is provided with a slideway, the slideway is provided with a filter outer frame, and the filter outer frame is provided with a filter net, and a circular fixing hole is opened on the wall of the inner air duct below the slideway. There are two circular fixing holes on the wall of the outer air duct, and the outer air duct is sleeved on the inner air duct. The circular fixing holes have the same size and are fixed by positioning pins.

The air groove forms an included angle of 30°-45° with the ground.

The utility model has a simple structure, does not need to provide any power in the device, is economical and environmentally friendly, and at the same time is easy to install, and has low production and maintenance costs, which is conducive to the use and promotion of large livestock and poultry breeding houses. The wet curtain in the device effectively absorbs The ammonia in the breeding house reduces the concentration of ammonia in the breeding house, optimizes the environment in the breeding house, and at the same time reduces the pollution of the atmosphere caused by the ammonia discharge of the breeding house; the water inlet and water replenishment port on the water curtain box keep the water tank The constant amount of internal water can absorb ammonia gas continuously and stably, and the water outlet can realize the collection of ammonia water, which is convenient for recycling.

Description of drawings

Fig. 1 is the front view of the utility model.

Figure 2 is a top sectional view of the water curtain box.

Fig. 3 is a partial schematic diagram of the exhaust hood.

In the figure: 1. Water curtain box 2. Connecting pipe 3. Exhaust cover 4. Water curtain box base 5. Front ventilating panel 6. Side ventilating panel 7. Column 8. Tripod 9. Top plate 10. Water inlet 11. Outlet Nozzle 12. Water supply port 13. Sink 14. Annular water channel 15. Wet curtain plate 16. Annular water pipe 17. Water hole 18. Float switch 19. Outer air duct 20. Inner air duct 21. Air duct 22. Bottom plate 23. Vertical plate 24. Panel 25. Bolt 26. Round head screw 27. Roof C-shaped steel 28. Strut 29. Strut 30. Vent 31. Anti-rust coating 32. Slide 33. Filter frame 34. Filter 35. Round 36. Positioning pin.

Detailed ways

Embodiment 1, as shown in Figure 1, a kind of ammonia purifying and collecting device for breeding house, comprises the water curtain box 1 that is arranged on the outside of the roof of the livestock and poultry breeding house and is arranged on the inside of the roof through the connecting pipe 2 and the water curtain The air extraction hood 3 connected to the box 1, the bottom of the water curtain box 1 is provided with a water curtain box base 4, and the outside of the water curtain box 1 is composed of two parallel front air-permeable panels 5 and two parallel side air-permeable panels 6, A column 7 is arranged between the front air-permeable plate 5 and the side air-permeable plate 6, a tripod 8 is arranged on the top of the water curtain box 1, a top plate 9 is arranged above the tripod 8, and a water inlet 10 and a water outlet 11 are arranged under the side air-permeable plate 5 , the top of the side air-permeable plate 6 is provided with a water replenishment port 12, the bottom of the water curtain box 1 is provided with a water tank 13, the water tank 13 is surrounded by an annular water channel 14, the annular water channel 14 is provided with a wet curtain plate 15, and the wet curtain plate 15 is provided with An annular water pipe 16, a water hole 17 is arranged at the bottom of the annular water pipe 16, and the annular water pipe 16 is connected to the water supply port 12, and a float switch 18 is arranged in the water tank 13, and the float switch 18 is connected to the water inlet 10, and the bottom of the connecting pipe 2 is provided with The inner air duct 19 is provided with an outer air duct 20 outside the inner air duct 19, and both sides of the bottom of the outer air duct 20 are provided with air grooves 21, and the outer air duct 20 communicates with the air groove 21. The water curtain box base 4 includes a The base plate 22 at the bottom of the water curtain box 1, the vertical plate 23 connected vertically with the outer end of the base plate 22, and the panel 24 arranged on the roof connected with the bottom of the vertical plate 23, the bottom of the water curtain box 1 and the base plate 22 are fixedly connected by bolts 25, The panel 24 is fixedly connected with the roof C-shaped steel 27 of the livestock and poultry breeding house by the round head screw 26, and the surface of the base is coated with a layer of zinc. The included angle between the top plates 9 is 15°-30°, the air-permeable plate is provided with vent holes 30, and the opening direction of the vent holes 30 is downward, and the annular water channel 14 includes an inner layer water channel and an outer layer water channel, between the inner layer water channel and the outer layer water channel The distance between them is 2CM-3CM, the thickness of the wet curtain plate 15 is 3CM-5CM, the inside of the water curtain box 1 is made of iron material, the outside is made of stainless steel material, the top plate 9 is composed of an upper layer and a lower layer, and the two layers are overlapped and welded to form a double slope structure, the outer surface is provided with an anti-rust coating 31, the upper part of the air duct 19 is provided with a slideway 32, the slideway 32 is provided with a filter frame 33, the filter frame 33 is provided with a filter screen 34, and the slideway 32 There is a circular fixing hole 35 on the wall of the outer air duct 19 below, and two circular fixing holes 35 are opened on the wall of the inner air duct 20 on the same side. The outer air duct 19 is sleeved on the inner air duct 20. Circular fixing holes 35 have the same size and are fixed by positioning pins 36. The air groove 21 forms an angle of 30°-45° with the ground.

The ammonia concentration on the ground in a certain poultry breeding house, on the roof in the breeding house, and inside and outside the water curtain box is measured by using an ammonia meter. The results are as follows:

Detection position Breeding house floor Breeding house top Water curtain box interior Water curtain box exterior Ammonia concentration 55-60ppm 65-76ppm 40-45ppm 0-5ppm

It can be seen that the ammonia concentration at the top of the breeding house is 16ppm higher than the ammonia concentration on the ground in the breeding house. The ammonia gas after passing through the water curtain box is absorbed by the wet curtains around the water curtain box, and the concentration of ammonia gas discharged from the water curtain box is It is 0-5ppm, which is far lower than the national emission standard, effectively solving the environmental pollution caused by the discharge of ammonia gas.

When the utility model is in use, first install the device on the roof of the livestock and poultry breeding house, the water curtain box part is installed on the outside of the roof, the exhaust hood is installed on the inside of the roof, and the middle is connected by a connecting pipe. When the temperature is high, in order to achieve the best ventilation effect, the height of the outer air duct sleeved on the inner air duct should be raised so that the circular fixing hole on the upper part of the inner air duct is aligned with the circular fixing hole of the outer air duct, and Fixed by positioning pins, in winter or when the temperature in the breeding house is low, in order to enhance the heat preservation effect in the breeding house and greatly increase the ammonia concentration on the ground in the breeding house, it is necessary to lower the outer air duct on the inner air duct height, make the air duct close to the ground, make it easier for ammonia to enter the air duct, and at the same time align the circular fixing hole on the upper part of the inner air pipe with the circular fixing hole of the outer air pipe, and fix them with positioning pins, and then move toward the water curtain box Inject water into the water tank inside, and the water in the water tank will soak the bottom of the wet curtain plate, and at the same time, inject water into the annular water pipe from the water supply port, and the water will flow down from the bottom of the annular water pipe, so that the water curtain will be formed in the wet curtain plate, and the water curtain plate will The upper and middle parts are completely soaked, and the ammonia gas in the livestock and poultry breeding house is sucked into the water curtain box through negative pressure. When the total water volume is lower than the set value, the float switch sinks, and the water inlet system connected to the water inlet starts. At the same time, the water inlet valve is opened to add water to the water curtain box. When the water volume in the water curtain box reaches the set value, the floater The switch is turned off, the water inlet system is stopped, and the water inlet stops water intake, thereby ensuring the constant total water volume in the water curtain box. The circulating water in the tank absorbs ammonia gas many times, and the concentration of ammonia water continues to increase. The concentration of ammonia water is observed by the ammonia water density meter , when the required concentration of ammonia water is reached, the water outlet valve is opened to collect the ammonia water.

The above descriptions are only preferred embodiments of the present utility model, and are not intended to limit the present utility model. For those skilled in the art, the present utility model can have various modifications and variations. Within the principle, any modification, equivalent replacement, improvement, etc. should be included in the protection scope of the present utility model.

Claims (8)

1. the ammonia decontamination for breeding house and gathering unit, comprise the cascade case that is arranged on livestock and poultry cultivation house outside, roof and be arranged on the inner draft hood be connected with cascade case by tube connector in roof, it is characterized in that: described cascade case inner bottom part is provided with tank, wet curtain plate is provided with in tank, annular conduit is provided with above wet curtain plate, water hole is provided with bottom annular conduit, wet curtain plate arranged outside has air permeable plate, water inlet and delivery port is provided with below air permeable plate, water supplement port is provided with above air permeable plate, annular conduit is connected with water supplement port, switch is provided with in tank, switch is connected with water inlet, interior airduct is provided with bottom described tube connector, interior airduct is outside equipped with outer airduct, outer airduct two bottom sides is provided with wind groove, outer airduct communicates with wind groove.

2. the ammonia decontamination for breeding house according to claim 1 and gathering unit, it is characterized in that: described cascade box top is provided with tripod, top board is provided with above tripod, tripod comprise strut, with strut pole connected vertically, between strut and top board, angle is 15 °-30 °.

3. the ammonia decontamination for breeding house according to claim 1 and gathering unit, is characterized in that: described wet curtain plate is four pieces, is arranged at cascade case surrounding, and four pieces of water curtain plates are connected to form square.

4. the ammonia decontamination for breeding house according to claim 1 and gathering unit, it is characterized in that: described air permeable plate is provided with air-vent, air-vent opening direction down.

5. the ammonia decontamination for breeding house according to claim 1 and gathering unit, is characterized in that: described wet curtain plate thickness is 3CM-5CM.

6. the ammonia decontamination for breeding house according to claim 1 and gathering unit, is characterized in that: described cascade case inside is ferrous material, and outside is stainless steel material.

7. the ammonia decontamination for breeding house according to claim 1 and gathering unit, is characterized in that: described top board is made up of the upper and lower, two-layer weld, and form double-pitch type structure, superficies are provided with antirust coat.

8. the ammonia decontamination for breeding house according to claim 1 and gathering unit, is characterized in that: described wind groove becomes 30 ° of-45 ° of angles with ground.