Positive pressure ventilation circulation device

Abstract

The utility model relates to a positive pressure ventilation circulation device, and belongs to the technical field of ventilation circulation. Comprising a plurality of ventilation assemblies which are sequentially arranged in the horizontal direction. The ventilation assembly comprises a double-cavity cloth bag air pipe, an axial flow fan, an air return pipe and a water curtain assembly, and the axial flow fan is arranged between the water curtain assembly and the double-cavity cloth bag air pipe; the water curtain assembly and the axial flow fan are connected through a pipeline to form an airflow input channel. The double-cavity cloth bag air pipe is connected with the axial flow fan to form an airflow conveying channel; one end of the air return pipe is communicated with the airflow input channel, and a ventilation duct is formed between the other end and the output end, close to one side of the axial flow fan, of the double-cavity cloth bag air pipe. By means of the regulation and control mode, the positive pressure ventilation circulation device can provide a proper air circulation environment for the livestock and poultry house all the year round, the positive pressure ventilation circulation device has important significance on growth and development of livestock and poultry, and survival comfort and breeding benefits of the livestock and poultry are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of ventilation circulation, and in particular relates to a positive pressure ventilation circulation device. Background Art

[0002] my country's livestock and poultry farming sector is currently facing severe virus threats. In order to ensure the healthy growth of livestock and poultry, environmental regulation during the farming process is particularly important. Harsh environmental conditions may cause viral epidemics, causing serious losses to the farming industry. Therefore, fine management of the livestock and poultry house environment to prevent the spread of viral epidemics has become the focus of attention of farmers and relevant departments.

[0003] In livestock and poultry houses, frequent ventilation can reduce the speed of virus transmission, improve air quality, and ensure the healthy growth of livestock and poultry. Ventilation is not only an important means of environmental regulation in livestock and poultry houses, but also a key measure to prevent and control the spread of epidemic diseases. The traditional ventilation mode in livestock and poultry houses is a negative pressure ventilation mode, but the ventilation volume of the traditional negative pressure ventilation mode is large, and the air exchange inside and outside the house is active. For example, the patent document with application number CN202310787759.8 discloses a duct and ventilation method with switchable ventilation mode, which adjusts the direction of the vent. Although this mode can effectively reduce the concentration of viruses in the house and adjust the temperature of cold air in winter and spring, it has limited preheating effect on cold air and increases the temperature of air entering the livestock and poultry house in summer. In order to maintain the temperature in the house, farmers need to increase insulation measures, thereby increasing the cost of breeding. In response to these problems, Chinese researchers and breeding industry practitioners need to work together to study new ventilation modes, explore more environmentally friendly and energy-saving ventilation measures, and further improve breeding benefits. Utility Model Content

[0004] The utility model aims to provide a positive pressure ventilation circulation device, which is used to solve the problem that the negative pressure ventilation mode in the prior art directly sends cold air into the livestock and poultry house in winter and spring, which will reduce the temperature in the house, affect the insulation effect and increase the breeding cost.

[0005] The purpose of the utility model can be achieved through the following technical solutions:

[0006] A positive pressure ventilation circulation device comprises a plurality of ventilation components, wherein the plurality of ventilation components are arranged in sequence along a horizontal direction;

[0007] The ventilation assembly includes a double-cavity bag air duct, an axial flow fan, a return air duct and a water curtain assembly, wherein the axial flow fan is arranged between the water curtain assembly and the double-cavity bag air duct;

[0008] The water curtain assembly and the axial flow fan are connected via a pipeline to form an air flow input channel;

[0009] The double-chamber bag air duct is connected to the axial flow fan to form an air flow conveying channel;

[0010] One end of the return air duct is communicated with the airflow input channel, and the other end forms a ventilation duct with the output end of the double-cavity bag air duct close to the axial flow fan.

[0011] As a further solution of the utility model: the double-cavity cloth bag air duct includes a tube body, the tube body is arranged parallel to the ground, and the output end of the double-cavity cloth bag air duct is arranged on the tube wall of the tube body on one side close to the ground.

[0012] As a further solution of the utility model: the output end of the double-chamber cloth bag air duct includes a plurality of first holes, a second hole and a third hole, a plurality of the first holes are arranged in sequence along the length direction of the tube body; a plurality of the second holes are arranged in sequence along the length direction of the tube body; a plurality of the third holes are arranged in sequence along the length direction of the tube body.

[0013] As a further solution of the present invention: the first hole diameter is larger than the second hole diameter, and the second hole diameter is larger than the third hole diameter.

[0014] Beneficial effects of the utility model:

[0015] The positive pressure ventilation circulation device disclosed in the utility model is connected to the double-cavity bag air duct through an axial flow fan through a water curtain assembly; the water curtain assembly and the axial flow fan are connected through a pipeline to form an airflow input channel; the inner cavity of the double-cavity bag air duct is connected to the axial flow fan to form an airflow delivery channel; one end of the return air duct is connected to the airflow input channel, and the other end forms a ventilation duct between the output end of the double-cavity bag air duct close to the axial flow fan. Through this control method, the positive pressure ventilation circulation device can provide a suitable ventilation environment for livestock and poultry houses in all seasons, which is of great significance to the growth and development of livestock and poultry, and is conducive to improving the living comfort and breeding efficiency of livestock and poultry. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The utility model is further described below in conjunction with the accompanying drawings.

[0017] Figure 1 This is a schematic diagram of the elevation structure of a positive pressure ventilation circulation device proposed by the utility model;

[0018] Figure 2 This is a schematic diagram of the planar structure of a positive pressure ventilation circulation device proposed by the utility model;

[0019] Figure 3 The utility model discloses a double-cavity cloth bag air duct structure schematic diagram of a positive pressure ventilation circulation device.

[0020] In the figure: 1. Double-chamber bag air duct; 101. Connector; 102. First hole; 103. Second hole; 104. Third hole; 2. Axial flow fan; 3. Adjusting air valve; 4. Water curtain assembly; 5. Return air outlet; 6. Return air duct. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-3 As shown, a positive pressure ventilation circulation device includes a plurality of ventilation components, which are arranged in sequence in the horizontal direction and suspended on the top of the livestock and poultry house for ventilation inside the livestock and poultry house; the ventilation component includes a double-cavity bag air duct 1, an axial flow fan 2, a return air duct 6 and a water curtain component 4, the water curtain component 4 is connected to the double-cavity bag air duct 1 through the axial flow fan 2; the water curtain component 4 is connected to the axial flow fan 2 through a pipeline to form an airflow input channel; the inner cavity of the double-cavity bag air duct 1 is connected to the axial flow fan 2 to form an airflow delivery channel; one end of the return air duct 6 is connected to the airflow input channel, and the other end forms a ventilation duct between the output end of the double-cavity bag air duct 1 close to the axial flow fan 2.

[0023] The double-cavity bag air duct 1 includes a tube body, which is arranged parallel to the ground, and the output end of the double-cavity bag air duct 1 is arranged on the tube wall on the side of the tube body close to the ground. The output end of the double-cavity bag air duct 1 includes a plurality of first holes 102, a second hole 103 and a third hole 104, wherein the plurality of first holes 102 are arranged in sequence along the length direction of the tube body; the plurality of second holes 103 are arranged in sequence along the length direction of the tube body; the plurality of third holes 104 are arranged in sequence along the length direction of the tube body, and the aperture of the first hole 102 is larger than the aperture of the second hole 103, and the aperture of the second hole 103 is larger than the aperture of the third hole 104.

[0024] In one embodiment, the double-cavity cloth bag air duct 1 is arranged parallel to the ground, and one side of the tube body of the double-cavity cloth bag air duct 1 faces the ground, and three rows of circular holes are opened on this side along the length direction of the tube body. The three rows of circular holes are arranged in sequence as a first hole 102, a second hole 103 and a third hole 104 according to the hole size along the diameter direction of the tube cross section. The diameter of the first hole 102 is larger than the diameter of the second hole 103, which is larger than the diameter of the third hole 104, and the second hole 103 and the third hole 104 are arranged alternately.

[0025] In one embodiment, one end of the tube body of the double-chamber bag air duct 1 is closed as the end, and the other end is open, which is connected to the axial flow fan 2 through a connector 101, the water curtain assembly 4 is connected to the axial flow fan 2 through a valve, and an adjusting air valve 3 is provided on the return air duct 6.

[0026] In one embodiment, a cloth pipe is sewn on the outside of the second hole 103 and the third hole 104 near the connector 101 to extend the air outlet formed by the second hole 103 and the third hole 104 and fix the air outlet direction, so that the axial flow fan 2 inputs the wind into the airflow input channel, and then outputs it from the second hole 103 and the third port, and enters the airflow input channel through the return air port 5 of the return air duct 6 along the ventilation duct for airflow circulation. The first hole 102 is located on one side of the central axis of the side of the tube body facing the ground, and forms an upper cavity with the inner cavity of the tube body. The second hole 103 and the third hole 104 are located on the other side of the central axis of the side of the tube body facing the ground, and form a lower cavity with the inner cavity of the tube body. The upper cavity and the lower cavity are separated by a zipper. By changing the aperture size, number or position of the double-cavity bag air duct 1, the ventilation speed and ventilation volume can be adjusted to meet different scenarios and needs.

[0027] In one embodiment, as shown in the attached Figure 3 As shown, the right side of the connector 101 is the air input end, and the other side is the end. From the air input end to the end, the first holes 102 are divided into three sections. The first section has 15 first holes 102. The hole center spacing of the 15 first holes 102 is 360 mm, and the diameter of the first hole 102 is 56 mm.

[0028] The second section has 18 first holes 102, the hole center spacing of the 18 first holes 102 is 300 mm, and the diameter of the first hole 102 is 56 mm; the third section has 20 first holes 102, the hole center spacing of the 20 first holes 102 is 260 mm, and the diameter of the first hole 102 is 56 mm;

[0029] The second holes 103 are divided into three sections. The number of the second holes 103 in the first section and the third section are both 29, and the hole center spacing is 180 mm. The second holes 103 in the first section have a hole diameter of 40 mm, and the second holes 103 in the third section have a hole diameter of 32 mm. The number of the second holes 103 in the second section is 30, and the hole center spacing is 180 mm, and the hole diameter is 36 mm.

[0030] The third holes 104 are divided into three sections. The number of the third holes 104 in the first section and the third section is 29, and the hole center spacing is 180 mm. The third holes 104 in the first section have a hole diameter of 30 mm, and the third holes 104 in the third section have a hole diameter of 24 mm. The number of the third holes 104 in the second section is 30, and the hole center spacing is 180 mm, and the hole diameter is 27 mm.

[0031] Through the arrangement of the above holes, the airflow is evenly output, thereby improving the ventilation effect.

[0032] In one embodiment, in the hot summer, in order to prevent the temperature of the air entering the livestock and poultry house from being too high, it is necessary to open the water curtain assembly 4 to cool the hot air drawn in before it is input into the livestock and poultry house; in the cold winter and spring, the cooling function of the water curtain assembly 4 is often turned off, and a certain amount of cold air is drawn in along the longer double-cavity bag air duct 1 for preheating and then enters the livestock and poultry house to circulate back and forth along the ventilation duct. During the circulation process, the heat generated by the livestock in the livestock and poultry house is mixed with the circulating airflow to further increase the temperature of the airflow, thereby maintaining the air temperature in the house at a more suitable temperature in the recirculating state.

[0033] In one embodiment, in winter, in order to further maintain a suitable air temperature in the livestock house, the valve of the water curtain assembly is closed, and only the internal air circulation and the heat generated by the livestock themselves are relied upon to maintain the temperature in the livestock house at a suitable state. At this time, the air in the livestock house is input into the double-chamber bag air duct 1 through the axial flow fan 2, and is output through the first hole 102 or the second hole 103 and the third hole 104, and then enters the return air duct 6 through the return air port 5, and enters the air flow conveying channel again along the return air duct 6 through the air flow input channel for output, and repeats the cycle. Air exchange is performed only when necessary, thereby ensuring the air quality in the house while stabilizing the environmental indicators in the house, which is beneficial to livestock and poultry breeding and production, and can save insulation costs.

[0034] The working principle of a positive pressure ventilation circulation device involved in the utility model is as follows:

[0035] The axial flow fan 2 is connected to the water curtain assembly 4 through a pipeline to form an airflow input channel. Initially, when the axial flow fan 2 is started, the airflow will enter the water curtain assembly 4 from the outside, pass through the airflow input channel, enter the double-chamber bag air duct 1, and then blow out. In this process, the airflow drives the air flow inside the livestock and poultry house, enters the return pipe along the ventilation duct, and forms a reciprocating cycle. Through the positive pressure ventilation mode, the axial flow fan 2 and the double-chamber bag air duct 1 solve the problems of heat preservation and ventilation of livestock and poultry houses in winter and summer.

[0036] In winter, by closing the valve of the water curtain assembly 4, the positive pressure ventilation mode utilizes the heat generated by the livestock and poultry themselves, and will not easily discharge the warm air in the house to the outside, saving insulation costs. In the high temperature period in summer, the axial flow fan 2 transports cold air into the house through the water curtain assembly 4 to reduce the temperature in the house.

[0037] Through this control method, the positive pressure ventilation circulation device of the present application can provide a suitable environment for livestock and poultry houses in all seasons, which is of great significance to the growth and development of livestock and poultry, and is beneficial to improving the living comfort and breeding efficiency of livestock and poultry.

[0038] The above describes some embodiments of the utility model in detail, but the above contents are only preferred embodiments of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A positive pressure ventilation circulation device, characterized in that: It comprises a plurality of ventilation components, wherein the plurality of ventilation components are arranged in sequence along a horizontal direction; The ventilation assembly includes a double-cavity bag air duct, an axial flow fan, a return air duct and a water curtain assembly, wherein the axial flow fan is arranged between the water curtain assembly and the double-cavity bag air duct; The water curtain assembly and the axial flow fan are connected via a pipeline to form an air flow input channel; The double-chamber bag air duct is connected to the axial flow fan to form an air flow conveying channel; One end of the return air duct is communicated with the airflow input channel, and the other end forms a ventilation duct with the output end of the double-cavity bag air duct close to the axial flow fan.

2. A positive pressure ventilation circulation device according to claim 1, characterized in that: The double-cavity cloth bag air duct comprises a tube body, which is arranged parallel to the ground, and the output end of the double-cavity cloth bag air duct is arranged on the tube wall of the tube body on one side close to the ground.

3. A positive pressure ventilation circulation device according to claim 2, characterized in that: The output end of the double-chamber cloth bag air duct includes a plurality of first holes, a second hole and a third hole, wherein the plurality of first holes are arranged in sequence along the length direction of the tube body; the plurality of second holes are arranged in sequence along the length direction of the tube body; and the plurality of third holes are arranged in sequence along the length direction of the tube body.

4. A positive pressure ventilation circulation device according to claim 3, characterized in that: The first hole has a larger aperture than the second hole, and the second hole has a larger aperture than the third hole.

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