CN208338570U - A kind of applicable cold district poultry house fresh air preheating system - Google Patents
A kind of applicable cold district poultry house fresh air preheating system Download PDFInfo
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- CN208338570U CN208338570U CN201821011502.4U CN201821011502U CN208338570U CN 208338570 U CN208338570 U CN 208338570U CN 201821011502 U CN201821011502 U CN 201821011502U CN 208338570 U CN208338570 U CN 208338570U
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Abstract
A kind of applicable cold district poultry house fresh air preheating system, poultry house ontology is interior to be equipped with fresh air preheating system, and level-one warm-up block includes the outer heat-exchanging chamber of house, is given up in outer heat-exchanging chamber equipped with inlet duct and exhaust apparatus；Inlet duct includes ventilating fan, and exhaust apparatus includes air exhauster, and exhaust apparatus is connected to by waste gas outlet in giving up with second level warm-up block；Two-stage preheating circuit includes manure pit in giving up, and gives up in interior manure pit and is equipped with preheating ventilating duct, and preheating ventilating duct both ends are connect with the first fresh air collecting chamber and three-level warm-up block respectively；Three-level warm-up block includes the second fresh air collecting chamber, and the second fresh air collecting chamber top is equipped with intake stack, and intake stack is passed through in poultry house furred ceiling and front and back is uniformly provided with air outlet on poultry house, intake stack.Fresh air preheating system provided by the utility model, how solve reduces ventilation consumption and keeps pig house ventilation unaffected existing for existing animal room, swinery inlet air temperature improves and reduces the problem of heating cost.
Description
Technical field
The utility model relates to livestock culturing building technical fields, more particularly, to a kind of applicable cold district poultry house
Fresh air preheating system.
Background technique
It is comprehensive to realize live pig production coordinated development in Ministry of Agriculture's " (2016-2020) is planned in national live pig production development "
It closes and considers environmental bearing capacity, endowment of resources, consumption preferences and butcher the factors such as processing, give full play to regional comparative advantage, it will
The Regional Distribution in the whole nation, which is divided into, gives priority to area, constraint development zone, potentiality growth area and optimum development area.
4 province of northeast (Liaoning, Jilin, Heilungkiang and the Inner Mongol) belongs to potentiality and increases area.Although the Regional Development Environment is good,
Policy support great efforts, but the region winter is cold and very long, and pig house is to guarantee the necessary ventilation again of suitable environment, ventilation
Scavenging period needs the outer cold air lower than -20 DEG C of house being heated to above 20 DEG C of suitable temperature, and pig house heating investment is big.
Although currently newly-built pig house applies reliable thermal insulation material to reduce enclosed structure heat loss, there is the cost that about most probably heats
It is vented consumption.If giving up outer fresh air to be directly entered in house, fresh air is not fully warmed-up and falls on pig, can also pig be made to produce
Raw food stress.Some pig farms are to reduce the cost that heats to take the method for reducing pig house ventilation quantity, cause the interior ventilation of house unevenly,
Local detrimental gas concentration is high in giving up, and swinery health degree is poor, and a variety of diseases take place frequently, and especially respiratory disease is even more common.
The contradiction of ventilation and heat preserving and supplying is to influence one of the emphasis contradiction of this area's Live Pig Development.
It avoids cold wind from directly entering house and cold stress is generated to pig, there is the following prior art on the market:
(1) preheating chamber is designed.The heating facilities such as hot-blast stove or radiator are placed in preheating chamber, fresh air is not into elder generation before pig house
Pig house furred ceiling is entered back into after preheating chamber is preheating to certain temperature, enters the wind branch even into pig house or through intake stack by air-inlet window
Pipe enters pig house, outer by blower discharge house.Fresh air is preheated in preheating chamber with hot-blast stove or radiator, although avoiding cold
Wind is directly entered cold stress caused by pig house, but can not fundamentally reduce pig house heating cost, lower due to giving up outer temperature,
Also it will appear the freezing phenomenon of heating sheet.
(2) it is preheated using ground source.The temperature of deep soil is smaller with the fluctuation in season, can substantially maintain 20 DEG C of left sides
The right side will be preheated using this characteristic into the pre-cooling winter air summer of house.For the contact area for increasing fresh air and soil, in soil
Pre-buried pipeline is placed in parallel or hub-type radiation is placed, and is converged after each pipeline fresh air and heat exchange in soil in gas chamber, by pipeline etc.
Equipment is sent into house, is pre-processed although being entered the wind using soil to fresh air, and operating cost substantially reduces, and soil must reach centainly
Depth just can make temperature keep constant low temperature, and want biggish contact area that can just throw with sufficient heat exchange, all early periods
Enter larger.
(3) heating by the exhaust gases is discharged using pig house.The exhaust gas of winter pig house discharge contains a large amount of heat, some pig raising person's benefits
Recuperation of heat is carried out to these exhaust gas with the equipment of industrial recuperation of heat.Heat after recuperation of heat is used for the heating to outer cold air is given up,
Recuperation of heat is carried out using exhaust gas of the industrial equipment to pig house, pig house energy-saving effect is obvious, but pig house exhaust gas constituents are complicated, contained
Dander easily blocks equipment, and contained etchant gas also causes to corrode to equipment.
(4) it is preheated using manure pit heat.Fresh air pipeline is placed in manure pit, outer cold air is given up and is blasted through giving up outer air blower
Pipeline, pipeline fresh air are entered pig house, are directly preheated using the heat of manure pit in giving up to fresh air after being preheated by manure pit heat, though
So there is pre-heat effect, but lower due to giving up outer gas temperature, temperature is excessively high in manure pit, preheating pipe frosting can be made serious, pipeline
It is easily rupturable.
How to reduce ventilation consumption and keep pig house ventilation unaffected, swinery inlet air temperature, which improves and reduces heating cost, is
This area pig farm facilities and equipment needs the problem overcome at present.
Utility model content
It is above-mentioned to solve the purpose of this utility model is to provide a kind of applicable cold district poultry house fresh air preheating system
It reduces ventilation energy consumption and meets the ventilation of pig house swinery health again, swinery inlet air temperature improves and reduces the problems such as heating cost.
A kind of applicable cold district poultry house fresh air preheating system, the poultry house include that poultry house ontology and poultry house are hung
Top, it is characterised in that:
Fresh air preheating system is equipped in the poultry house ontology, the fresh air preheating system includes level-one warm-up block, two
Grade warm-up block and three-level warm-up block；
The level-one warm-up block includes the outer heat-exchanging chamber of house, is equipped with inlet duct and row in the outer heat-exchanging chamber of the house
Device of air；
The inlet duct includes ventilating fan, and the ventilating fan is connected by heat exchanging pipe and the first fresh air collecting chamber
It connects, the exhaust apparatus includes air exhauster, and the exhaust apparatus is connected to by waste gas outlet in giving up with second level warm-up block；
The two-stage preheating circuit includes manure pit in giving up, and is equipped with preheating ventilating duct in the house in manure pit, and the preheating is logical
Air duct both ends are connect with the first fresh air collecting chamber and the three-level warm-up block respectively；
The three-level warm-up block includes the second fresh air collecting chamber, and the second fresh air collecting chamber top is equipped with blast pipe
Road, the intake stack is passed through in poultry house furred ceiling and front and back is uniformly provided with air outlet on poultry house, the intake stack.
Air filter is additionally provided in the poultry house ontology, the air filter is divided into air intake filter and outlet mistake
Filter, the air intake filter are set on the inside of the inlet duct, completely cut off extraneous dust granule, and the air filter out is set to institute
It states on the inside of exhaust apparatus, is additionally provided with deodorizing layer in the air filter out, the hair in filtering room air and expeling are indoor different
Taste, the air filter are detachable filter.
Further, manure pit export mouth is equipped on the outside of the manure pit, the manure pit export mouth is equipped with device for eliminating odor.
Further, the ventilating fan is set at the top of the outer heat-exchanging chamber of the house, and the air exhauster is set to the outer heat of house
Switch room side, the ventilating fan and the air exhauster are axial flow blower.
Further, the outdoor heat-exchanging chamber is connected to poultry house ontology.
Further, the first fresh air collecting chamber is located at poultry house body interior, the first fresh air collecting chamber and two
Grade warm-up block is directly provided with partition wall, and the partition wall is equipped with preheating ventilating duct.
Further, partition wall two sides top, which is equipped with, gives up interior waste gas outlet.
Further, at least one is equipped in the poultry house ontology along the corridor of the poultry house body length direction,
The corridor two sides be equipped with livestock and poultry cage, the corresponding lower section of livestock and poultry cage be equipped with the house in manure pit, the livestock and poultry cage with it is described
Slatted floor is equipped in giving up between manure pit.
Further, the heat exchanging pipe is set to below the corridor or slatted floor.
Further, the heat exchanging pipe and the preheating ventilating duct are that multiple heat exchanging pipes are arranged in a combination
Pipeline group.
Further, the poultry house furred ceiling is connected to by air outlet with the poultry house ontology；The poultry house ontology
It is connected to form wind circulation path with the manure pit by crack hole.
Further, the intake stack is L-type pipeline, and longer one end is fixedly connected in poultry house furred ceiling, described
Multiple air outlets are uniformly provided on longer one end intake stack.
Fresh air preheating system provided by the utility model, to reach winter pig house, swinery inlet air temperature is improved and reduction supplies
The shortcomings that warm cost, the utility model is directed to existing scheme, carry out three-level heating preheating to the cold air for entering pig house: level-one is pre-
The recycling heating of heat utilization heat-exchanging chamber waste-gas heat, the pre- heat utilization manure pit heat pre-heating temperature elevation of second level, the pre- heat utilization heat of three-level are empty
Air tightness is small to be placed in pig house the top for intake stack the characteristics of pig house upper space converges, again using above pig house
Heat carries out pre-heating temperature elevation to entering to give up air, and the cold air for reaching swinery is made not cause cold stress to pig.
Fresh air after preheating enters in poultry house from air outlet, then is entered in manure pit by crack hole, takes away from blower,
Discharge is outdoor；It is empty inside poultry house by passing through along the vertical direction after poultry house furred ceiling that such draft type can be realized air
Between, hence into being then exhausted from manure pit, that is to say, that form moving air straight down in animal feeding space；It is such logical
Wind mode enables to air-flow to flow from the top of animal cultured space to the bottom end in animal feeding space, so that animal feeding is empty
Interior each animal can experience the air of flowing, due to belonging to negative pressuren zone inside manure pit, so that inside poultry house
Air-flow can only be flowed to bottom space, without causing air-flow to avoid animal stream because there is the obstacles such as animal inside poultry house
It is dynamic, the problem of the effective wind speed for acting on animal bodies can be formed, not will cause waste electric power resource.
In conclusion fresh air preheating system provided by the utility model, solve existing for existing animal room how
Reduce ventilation consumption makes pig house ventilation unaffected again, and swinery inlet air temperature improves and reduces the problem of heating cost.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of the utility model embodiment
Attached drawing be briefly described, it should be understood that the following drawings illustrates only some embodiments of the utility model, therefore should not be by
Regard the restriction to range as, for those of ordinary skill in the art, without creative efforts, may be used also
To obtain other relevant attached drawings according to these attached drawings.
Fig. 1 is the schematic diagram of internal structure (not showing roof) of the utility model fresh air ventilating system；
Fig. 2 is that the utility model level-one warm-up block preheats schematic diagram；
Fig. 3 is that the utility model second level warm-up block preheats schematic diagram；
Fig. 4 is that the utility model three-level warm-up block preheats schematic diagram；
Fig. 5 is the structure chart that the utility model goes out air filter.
Appended drawing reference:
1- poultry house ontology；2- poultry house furred ceiling；3- level-one warm-up block；
4- second level warm-up block；5- three-level warm-up block；6- gives up outer heat-exchanging chamber；
7- ventilating fan；8- air exhauster；9- gives up interior waste gas outlet；
10- gives up interior manure pit；11- heat exchanging pipe；12- preheats ventilating duct；
13- the first fresh air collecting chamber；14- the second fresh air collecting chamber；15- intake stack；
16- partition wall；The corridor 17-；18- air intake filter；
19- goes out air filter；20- filter layer；21 deodorizing layers；
22- manure pit export mouth.
Specific embodiment
The technical solution of the utility model is clearly and completely described below in conjunction with attached drawing, it is clear that described
Embodiment is the utility model a part of the embodiment, instead of all the embodiments.Based on the embodiments of the present invention, originally
Field those of ordinary skill every other embodiment obtained without making creative work belongs to practical
Novel protected range.
It is in the description of the present invention, it should be noted that term " center ", "upper", "lower", "left", "right", " perpendicular
Directly ", the orientation or positional relationship of the instructions such as "horizontal", "inner", "outside" is to be based on the orientation or positional relationship shown in the drawings, and is only
For ease of description the utility model and simplify description, rather than the device or element of indication or suggestion meaning must have it is specific
Orientation, be constructed and operated in a specific orientation, therefore should not be understood as limiting the present invention.In addition, term " the
One ", " second ", " third " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance.
In the description of the present invention, it should be noted that unless otherwise clearly defined and limited, term " is pacified
Dress ", " connected ", " connection " shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integrally
Connection；It can be mechanical connection, be also possible to be electrically connected；Can be directly connected, can also indirectly connected through an intermediary,
It can be the connection inside two elements.For the ordinary skill in the art, above-mentioned art can be understood with concrete condition
The concrete meaning of language in the present invention.
Embodiment 1
Fresh air preheating system shown in referring to figures 1-4, the poultry house include poultry house ontology 1 and poultry house furred ceiling 2,
Fresh air preheating system is equipped in the poultry house ontology 1, the fresh air preheating system includes level-one warm-up block 3, second level preheating
Module 4 and three-level warm-up block 5；
The level-one warm-up block 3 includes the outer heat-exchanging chamber 6 of house, is equipped with inlet duct in the outer heat-exchanging chamber 6 of the house
And exhaust apparatus；
The inlet duct includes ventilating fan 7, and the ventilating fan 7 is collected by heat exchanging pipe 11 and the first fresh air
Room 13 connects, and the exhaust apparatus includes air exhauster 8, and the exhaust apparatus passes through waste gas outlet 9 in giving up and the pre- hot-die of second level
Block 4 is connected to；
The second level warm-up block 4 includes manure pit 10 in giving up, and is equipped with preheating ventilating duct 12 in the house in manure pit 10, described
Preheating 12 both ends of ventilating duct are connect with the first fresh air collecting chamber 13 and the three-level warm-up block 5 respectively；
The three-level warm-up block 5 include the second fresh air collecting chamber 14,14 top of the second fresh air collecting chamber be equipped with into
Air piping 15, the intake stack 15 is passed through in poultry house furred ceiling 2 and front and back is uniform on poultry house, the intake stack 15
Equipped with air outlet.
Air filter is additionally provided in the poultry house ontology 1, the air filter is divided into air intake filter 18 and goes out
Air filter 19, the air intake filter 18 are set on the inside of the inlet duct, completely cut off extraneous dust granule, the outlet filtering
Device 19 is set on the inside of the exhaust apparatus, and multiple air filtration layers 20, the outlet filtering are equipped in the air filter
Device 19 is individually equipped with deodorizing layer 21, and hair and expeling foreign flavor indoors in filtering room air, the air filter is removable
Unload filter.
Preferably, the ventilating fan 7 is set to outer 6 top of heat-exchanging chamber of the house, and the air exhauster 8 is set to house
Outer 6 side of heat-exchanging chamber, the ventilating fan 7 and the air exhauster 8 are axial flow blower.
Preferably, the outer heat-exchanging chamber 6 of the house is connected to poultry house ontology 1.
Preferably, the first fresh air collecting chamber 13 is located inside poultry house ontology 1, the first fresh air collecting chamber
13 are directly provided with partition wall 16 with second level warm-up block 4, and the partition wall 16 extends transversely through poultry house, described to receive with first fresh air
Collect the partition wall 16 on 13 intersection of room and is equipped with preheating ventilating duct 12.
Preferably, the 16 two sides top of partition wall, which is equipped with, gives up interior waste gas outlet 9.
Preferably, at least one is equipped in the poultry house ontology along the corridor of the poultry house body length direction
17,17 two sides of corridor are equipped with livestock and poultry cage, and the corresponding lower section of livestock and poultry cage is equipped with manure pit 10 in the house, the livestock and poultry cage
Slatted floor is equipped between manure pit 10 in the house.
Preferably, heat exchanging pipe 11 is stated below the corridor 17 or slatted floor.
Preferably, the heat exchanging pipe 11 and the preheating ventilating duct 12 are multiple heat exchange tube body arrangement groups
Pipeline group made of conjunction.
Preferably, the poultry house furred ceiling 2 is connected to by air outlet with the poultry house ontology 1；The poultry house
Ontology 1 is connected to form wind circulation path by crack hole with the manure pit.
Preferably, the intake stack 15 is L-type pipeline, and longer one end is fixedly connected in poultry house furred ceiling 2,
Multiple air outlets are uniformly provided on longer one end intake stack 15.
This ventilation mode enters the fresh air after preheating in poultry house from air outlet, then is entered in manure pit by crack hole,
It is taken away from blower, discharge is outdoor；Such draft type can be realized air by passing through along the vertical direction after poultry house furred ceiling
Poultry house inner space, hence into being then exhausted from manure pit, that is to say, that form stream straight down in animal feeding space
Dynamic air；Such draft type enables to air-flow to flow from the top of animal cultured space to the bottom end in animal feeding space,
So that the air that each animal in animal feeding space can experience flowing makes due to belonging to negative pressuren zone inside manure pit
Obtaining the air-flow inside poultry house can only flow to bottom space, without causing because of having the obstacles such as animal inside poultry house
Air-flow avoids animal flowing, can form the effective wind speed for acting on animal bodies, not will cause asking for waste electric power resource
Topic.
Embodiment 2
As in Figure 2-4, outdoor air is introduced by air intake blower fan by the filtering of the air intake filter first step in intake process
Heat exchanging pipe, because heat exchanging pipe is surrounded by discharge exhaust gas in house, therefore intake process, it gives up outer cold air and temperature is higher useless
The exchange of gas heat, temperature are collected after increasing in the first fresh air collecting chamber, and level-one preheating is completed.
The fresh air of first fresh air collecting chamber enters the pre- hot-flow flue of manure pit under the action of negative pressure, after the heat in manure pit
Into the second fresh air collecting chamber, second level preheating is completed.
Fresh air after manure pit preheats enters at the top of pig house through intake stack, because pig house hot-air collects at top, fresh air
It is heated, is uniformly discharged in house after completing three-level preheating again, and enter manure pit bottom through slatted floor, air exhauster is handed in heat
It changes room and generates negative pressure, give up interior exhaust gas through waste gas outlet and enter heat-exchanging chamber, surround the cold air inside heat exchanging pipe and pipeline
After carrying out heat exchange, by air exhauster, discharge house is outer after going out air filter and carrying out smelly eliminating filtering hair treatment.
The air intake filter and the air filter out can be replaced with the compartment time.
While there has been shown and described that the embodiments of the present invention, for the ordinary skill in the art,
It is understood that these embodiments can be carried out with a variety of variations in the case where not departing from the principles of the present invention and spirit, repaired
Change, replacement and variant, the scope of the utility model is defined by the appended claims and the equivalents thereof.
Claims (10)
1. a kind of applicable cold district poultry house fresh air preheating system, the poultry house includes poultry house ontology (1) and poultry house
Furred ceiling (2), it is characterised in that:
Be equipped with fresh air preheating system in the poultry house ontology (1), the fresh air preheating system include level-one warm-up block (3),
Second level warm-up block (4) and three-level warm-up block (5)；
The level-one warm-up block (3) includes the outer heat-exchanging chamber (6) of house, is equipped with air inlet in the outer heat-exchanging chamber (6) of the house and fills
It sets and exhaust apparatus；
The inlet duct includes ventilating fan (7), and the ventilating fan (7) is received by heat exchanging pipe (11) and the first fresh air
Collect room (13) connection, the exhaust apparatus includes air exhauster (8), and the exhaust apparatus passes through waste gas outlet (9) and two in giving up
Grade warm-up block (4) is connected to；
The second level warm-up block (4) includes manure pit (10) in giving up, and is equipped with preheating ventilating duct (12) in manure pit (10) in the house,
Preheating ventilating duct (12) both ends are connect with the first fresh air collecting chamber (13) and the three-level warm-up block (5) respectively；
The three-level warm-up block (5) includes the second fresh air collecting chamber (14), and the second fresh air collecting chamber (14) top is equipped with
Intake stack (15), the intake stack (15) is passed through in poultry house furred ceiling (2) and front and back is through poultry house, the intake stack
(15) air outlet is uniformly provided on；
Air filter is additionally provided in the poultry house ontology (1), the air filter is divided into air intake filter (18) and goes out
Air filter (19), the air intake filter (18) are set on the inside of the inlet duct, completely cut off extraneous dust granule, the outlet
Filter (19) is set on the inside of the exhaust apparatus, is equipped with multiple air filtration layers (20) in the air filter, described
Air filter (19) is individually equipped with deodorizing layer (21) out, hair and expeling foreign flavor indoors in filtering room air, the air
Filter is detachable filter.
2. applicable cold district poultry house fresh air preheating system according to claim 1, which is characterized in that the air inlet wind
Machine (7) is set at the top of the outer heat-exchanging chamber (6) of the house, and the air exhauster (8), which is set to, gives up outer heat-exchanging chamber (6) side, described
Ventilating fan (7) and the air exhauster (8) are axial flow blower.
3. applicable cold district poultry house fresh air preheating system according to claim 1, which is characterized in that the outer heat of the house
Switch room (6) is connected to poultry house ontology (1).
4. applicable cold district poultry house fresh air preheating system according to claim 1, which is characterized in that described first is new
Wind collecting chamber (13) is located at poultry house ontology (1) inside, and the first fresh air collecting chamber (13) and second level warm-up block (4) are direct
Equipped with partition wall (16), the partition wall (16) extends transversely through poultry house, it is described on the first fresh air collecting chamber (13) intersection
Partition wall (16) be equipped with preheating ventilating duct (12).
5. the applicable cold district poultry house fresh air preheating system according to claim (4), which is characterized in that the partition wall
(16) two sides top, which is equipped with, gives up interior waste gas outlet (9).
6. applicable cold district poultry house fresh air preheating system according to claim 1, which is characterized in that the poultry house
At least one is equipped in ontology along the corridor (17) of the poultry house body length direction, corridor (17) two sides are equipped with livestock and poultry
Cage, the corresponding lower section of livestock and poultry cage are equipped with manure pit (10) in the house, set between manure pit (10) in the livestock and poultry cage and the house
There is slatted floor.
7. the applicable cold district poultry house fresh air preheating system according to claim (6), which is characterized in that the heat is handed over
Pipeline (11) are changed below the corridor (17) or slatted floor.
8. applicable cold district poultry house fresh air preheating system according to claim 1, which is characterized in that the heat is handed over
It changes pipeline (11) and preheating ventilating duct (12) is the pipeline group that multiple heat exchanging pipes are arranged in a combination.
9. applicable cold district poultry house fresh air preheating system according to claim 1, which is characterized in that the poultry house
Furred ceiling (2) is connected to by air outlet with the poultry house ontology (1)；The poultry house ontology (1) passes through crack hole and the excrement
Pond is connected to form wind circulation path.
10. applicable cold district poultry house fresh air preheating system according to claim 1, which is characterized in that the air inlet
Pipeline (15) is L-type pipeline, and longer one end is fixedly connected in poultry house furred ceiling (2), longer one end intake stack
(15) multiple air outlets are uniformly provided on.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821011502.4U CN208338570U (en) | 2018-06-28 | 2018-06-28 | A kind of applicable cold district poultry house fresh air preheating system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201821011502.4U CN208338570U (en) | 2018-06-28 | 2018-06-28 | A kind of applicable cold district poultry house fresh air preheating system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108684535A (en) * | 2018-06-28 | 2018-10-23 | 青岛大牧人机械股份有限公司 | A kind of applicable cold district poultry house fresh air preheating system |
| CN113100072A (en) * | 2021-03-09 | 2021-07-13 | 四川金梓源农业有限公司 | Building pig raising system |
-
2018
- 2018-06-28 CN CN201821011502.4U patent/CN208338570U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108684535A (en) * | 2018-06-28 | 2018-10-23 | 青岛大牧人机械股份有限公司 | A kind of applicable cold district poultry house fresh air preheating system |
| CN108684535B (en) * | 2018-06-28 | 2024-03-19 | 青岛大牧人机械股份有限公司 | Fresh air preheating system suitable for livestock and poultry houses in cold regions |
| CN113100072A (en) * | 2021-03-09 | 2021-07-13 | 四川金梓源农业有限公司 | Building pig raising system |
| CN113100072B (en) * | 2021-03-09 | 2022-11-29 | 四川金梓源农业有限公司 | Building pig raising system |
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