Constant temperature circulating warm air device suitable for piglet breeding

Abstract

The utility model discloses a constant temperature circulation warm air device suitable for piglet breeding, including constant temperature box, heating module, fan module, temperature control system and protection subassembly. Through centrifugal fan and axial flow fan cooperation circulation airflow, U type heating tube cooperation wave shape radiating fin high -efficient heating, the accurate regulation and control of many positions temperature are realized to PT100 sensor and PLC controller, 304 stainless steel protective net prevents gnawing, and the drain port is moistureproof. Solve traditional device temperature uneven, high energy consumption, security hidden danger and the problem of extensive regulation and control, guarantee piglet constant temperature environment, improve survival rate and growth quality.

Description

Technical Field

[0001] This utility model relates to the field of animal husbandry, and in particular to a constant temperature circulating warm air device suitable for piglet breeding. Background Technology

[0002] In the field of piglet breeding and farming, environmental temperature is one of the key factors affecting the survival rate, growth quality, and health status of piglets. Newborn piglets have weak thermoregulation capabilities (their thermoregulatory center is not fully developed within 1-3 weeks after birth) and are extremely sensitive to changes in environmental temperature. A suitable constant temperature environment is the foundation for their survival and healthy growth. However, existing heating devices for piglet farming still have the following shortcomings: 1. Poor temperature uniformity: Traditional heating methods (such as coal stoves, heat lamps, radiators, etc.) mostly rely on heat radiation or local convection, which easily leads to uneven temperature distribution in the breeding area. The piglet activity area often experiences alternating "high temperature zones" and "low temperature zones," causing problems such as piglets huddling together for warmth (easily crushed) or catching a cold and getting diarrhea. 2. Coexisting energy consumption and safety hazards: Coal-fired heating requires additional fuel supply, increasing breeding costs and easily generating pollutants such as dust and carbon monoxide, threatening the respiratory health of piglets; heat lamps, when suspended for a long time, are prone to leakage or breakage due to aging or collisions, posing a risk of scalding piglets or causing fires; some electric heating devices, although clean, have low thermal efficiency and require continuous high-power operation, resulting in serious energy waste. 3. Insufficient intelligent environmental control: Traditional devices rely heavily on manual experience to adjust the temperature (such as manually turning on and off coal stoves and adjusting the height of heat lamps), making it difficult to accurately control the temperature in real time according to the age of piglets, density, and changes in outside temperature, easily causing excessive temperature fluctuations (such as a day-night temperature difference exceeding 3°C), affecting the development of the piglets' immune system. 4. Weak protective performance: Piglets are naturally active and prone to chewing and bumping into heating equipment. The protective structure of traditional devices often fails due to insufficient strength or excessively large mesh, leading to piglets accidentally touching heating elements and causing burns, or equipment damage affecting the stability of heating.

[0003] In summary, there is an urgent need for a constant temperature heating device with optimized structure, precise temperature control, safety, reliability, and high level of intelligence to meet the needs of piglets for a stable and constant temperature environment during their reproductive stage. Utility Model Content

[0004] The technical problem to be solved by this utility model is to overcome the defects of the prior art and provide a constant temperature circulating warm air device suitable for piglet breeding.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] This utility model discloses a constant temperature circulating warm air device suitable for piglet breeding, comprising a constant temperature chamber, a heating module, a fan module, a temperature control system, and protective components. The constant temperature chamber has an air inlet with a dust filter at its bottom inner side, and multiple horizontal exhaust ports evenly distributed at the top. A perforated ventilation plate is fixed to the inner wall of the bottom, and an exhaust port is located on one side of the top, with an axial flow fan connected to the outside of the exhaust port. The heating module includes a sealed heating chamber with multiple sets of U-shaped heating tubes arranged side-by-side inside, each set of U-shaped heating tubes tightly fitted with aluminum heat dissipation fins. The fan module consists of two sets of fans... The centrifugal fans, symmetrically arranged in the heating module, have their air inlets connected to the outlet of the heating chamber via a first flange interface, and their air outlets connected to the inner cavity of the constant temperature chamber via a second flange interface. The temperature control system includes multiple sets of temperature sensors and a PLC controller distributed in the piglet rearing area. The PLC controller is electrically connected to the motors of the heating tubes and fan modules via wires, and adjusts the power of the heating tubes and the speed of the fans in real time. The protective components include a protective net covering a perforated ventilation plate, and the two sides of the protective net are fixedly connected to the inner wall of the constant temperature chamber via fixing posts.

[0007] As a preferred technical solution of this utility model, the inlet end of the heating box is provided with a conical guide shroud. The conical guide shroud is made of stainless steel. The diameter of the large end is the same as the diameter of the connecting opening on the side wall of the constant temperature box, and the diameter of the small end is 1 / 2-2 / 3 of the diameter of the inlet end of the heating box. The small end extends to 20-30mm below the heating tube, guiding the airflow to concentrate and flow towards the heating tube.

[0008] As a preferred technical solution of this utility model, the aluminum heat dissipation fins are in the form of a wavy sheet structure with a thickness of 1-2mm and a spacing of 5-8mm between adjacent fins. They are closely attached to the lower semi-circular arc section of the heating tube and are evenly distributed, which increases the heat dissipation area while preventing heat from accumulating upward.

[0009] As a preferred technical solution of this utility model, the temperature sensor is a PT100 platinum resistance sensor with an IP65 protection rating, which is installed at a height of 30cm and 100cm above the ground in the piglet nursery area and at the edge of the piglet activity area to collect temperature data at different locations in real time; the PLC controller is set on the outer wall of the constant temperature chamber.

[0010] As a preferred technical solution of this utility model, the anti-touch protective net is a 304 stainless steel woven mesh with a mesh size of 5mm×5mm. The mesh surface is parallel to the perforated ventilation plate and the spacing is 10-15mm, which not only prevents piglets from biting but also avoids blocking ventilation. The fixing post is an L-shaped galvanized steel pipe with a length of 100-150mm. One end is fixed to the ground of the constant temperature box by bolts, and the other end is welded to the edge of the protective net to ensure that the protective net is installed firmly.

[0011] As a preferred technical solution of this utility model, the bottom of the constant temperature chamber is provided with a drain outlet, which is located below the porous ventilation plate and equipped with a drain valve to drain the water accumulated due to air condensation, so as to avoid excessive humidity in the constant temperature chamber from affecting the health of piglets.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0013] 1. The system employs a closed-loop airflow path of "heating-circulation-redistribution": Outside air is filtered through a dust filter at the bottom of the incubator, then drawn into the heating chamber by a centrifugal fan. It is rapidly heated by U-shaped heating pipes and corrugated heat dissipation fins, and then evenly distributed into the incubator cavity through a perforated ventilation plate. Finally, it diffuses evenly to the piglet activity area from the top horizontal exhaust vent. Simultaneously, an axial flow fan connected to the top exhaust vent further enhances air circulation within the chamber, preventing airflow stagnation. Tests have shown that the temperature difference at heights of 30cm and 100cm above the ground in the breeding area, as well as at the edge of the piglet activity area, can be controlled within ±0.5℃, completely solving the problem of localized high or low temperatures in traditional systems.

[0014] 2. The heating module adopts a combination design of U-shaped heating tube and aluminum heat dissipation fins. The wavy heat dissipation fins are closely attached to the lower semi-circular arc section of the heating tube, which increases the heat exchange area. Combined with the directional air delivery of the centrifugal fan, the air heating time is shortened. At the same time, the device is driven by electricity only, without fuel combustion pollution, avoiding safety hazards such as coal furnace dust and broken heat lamps, and meeting the environmental protection requirements of modern large-scale breeding.

[0015] 3. The temperature control system is equipped with multiple PT100 platinum resistance sensors, installed at a height of 30cm (for the piglets lying down), 100cm (for the piglets standing), and at the edge (the transition zone susceptible to external temperature changes) of the piglet activity area. These sensors collect temperature data from different locations in real time and feed it back to the PLC controller. The controller dynamically adjusts the heating element power and centrifugal fan speed according to the set target temperature, ensuring that temperature fluctuations in the breeding area are less than ±1℃, effectively reducing stress responses in piglets caused by sudden temperature changes.

[0016] 4. The surface of the perforated ventilation plate is covered with a 304 stainless steel woven mesh, which not only prevents piglets from biting the ventilation plate or accidentally touching the heating element, but also avoids blocking the ventilation. The mesh is fixed to the inner wall of the constant temperature box by welding with L-shaped galvanized steel pipe fixing posts. The installation is firm enough to withstand the collision of piglets and completely eliminates safety accidents caused by loose equipment. Attached Figure Description

[0017] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0018] Figure 1This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is the front view of this utility model;

[0020] Figure 3 This is a top view of the present invention;

[0021] Figure 4 This is a cross-sectional structural diagram of the present invention;

[0022] Figure 5 This is a schematic diagram of the heating module in this utility model;

[0023] In the diagram: 1. Constant temperature chamber; 2. Heating module; 3. Fan module; 4. Temperature control system; 5. Protective components; 11. Air inlet; 12. Exhaust outlet; 13. Perforated ventilation plate; 14. Exhaust vent; 15. Axial flow fan; 16. Drain outlet; 21. Heating chamber; 22. Heating tube; 23. Heat dissipation fins; 31. First flange interface; 32. Second flange interface; 41. Temperature sensor; 42. PLC controller; 51. Protective net; 52. Fixing column; 111. Filter with dustproof screen; 161. Drain valve; 211. Conical guide shroud. Detailed Implementation

[0024] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the preferred embodiments described herein are for illustration and explanation only and are not intended to limit the present invention.

[0025] In the attached diagram, all identical reference numerals refer to the same components.

[0026] Example 1: Basic type of temperature control device for piglet nursery

[0027] like Figure 1-5 As shown, this embodiment is applicable to the piglet nursery area of ​​small and medium-sized pig houses. The connection relationship between each module is clearly defined by part numbers. The specific structure is as follows:

[0028] The constant temperature chamber 1 is a rectangular metal box with an air inlet 11 at the bottom inside, equipped with a dust filter 111. The filter 111 is fixed to the edge of the air inlet 11 by clips to filter external dust. Six horizontal exhaust ports 12 are evenly distributed on the top of the constant temperature chamber 1, and the exhaust ports 12 are equidistant along the length of the box. A perforated ventilation plate 13 is bolted to the inner wall of the bottom of the constant temperature chamber 1. The ventilation plate 13 is made of perforated steel plate, and the space above it forms an air distribution zone. An exhaust port 14 is opened on one side of the top of the constant temperature chamber 1. The exhaust port 14 is connected to the air outlet of an axial flow fan 15 through a flange. The axial flow fan 15 is used to assist in enhancing the air circulation inside the constant temperature chamber 1.

[0029] The heating chamber 21 of the heating module 2 is a sealed metal box, connected to the air inlet of the centrifugal fan 3 via the first flange interface 31. The inlet end of the heating chamber 21 is equipped with a conical air guide shroud 211, made of stainless steel. The larger end of the shroud matches the communication port on the side wall of the constant temperature chamber 1, while the smaller end extends 25mm below the heating tube 22 inside the heating chamber 21, guiding the airflow to concentrate on the heating tube 22. Inside the heating chamber 21, three sets of U-shaped heating tubes 22 are arranged side-by-side. Each set of heating tubes 22 has corrugated aluminum heat dissipation fins 23 tightly attached to its exterior. The fins 23 fit into the lower semi-circular arc of the heating tube 22, increasing the heat dissipation area.

[0030] The fan module 3 uses a centrifugal fan with a motor power of 1.5kW. The air inlet is connected to the outlet of the heating box 21 through the first flange interface 31, and the air outlet is connected to the inner cavity of the constant temperature box 1 through the second flange interface 32, so that the heated air is sent into the distribution area above the perforated ventilation plate 13.

[0031] Please see Figure 2 The temperature control system 4 includes 4 sets of PT100 platinum resistance sensors 41, of which 2 sets are installed 30cm above the ground in the piglet nursery area (the piglet lying area), 1 set is installed at a height of 100cm (the piglet standing activity area), and 1 set is installed at the edge of the piglet activity area (the transition area that is easily affected by the outside temperature). The sensors have an IP65 protection rating. The PLC controller 42 is fixed to the outer wall of the constant temperature chamber 1 and is electrically connected to the motors of 3 sets of U-shaped heating tubes 22 and centrifugal fans 3 through wires. It receives sensor signals in real time and adjusts the heating power and fan speed.

[0032] The protective component 5 has a 304 stainless steel woven mesh 51 with a mesh size of 5mm×5mm. It covers the perforated ventilation plate 13, is parallel to the plate surface, and has a spacing of 12mm. The protective mesh 51 is fixed to the inner wall of the constant temperature box 1 by L-shaped galvanized steel pipe fixing posts 52 on both sides. The fixing posts 52 are 120mm long, and one end is connected to the ground of the constant temperature box 1 by bolts to ensure that the protective mesh 51 is stable and prevents piglets from biting or accidentally touching the heating area.

[0033] The constant temperature chamber 1 has a drain outlet 16 at the bottom, located below the perforated ventilation plate 13, and is equipped with a drain valve 161 to drain the water generated by air condensation and prevent the humidity inside the chamber from being too high.

[0034] Example 2: Enhanced Temperature Control System for Large-Scale Pig Houses

[0035] This embodiment is applicable to the piglet nursery area of ​​large-scale pig houses, focusing on enhancing heating efficiency and multi-zone temperature control capabilities. The main structural differences from Embodiment 1 are as follows:

[0036] Five sets of U-shaped heating tubes 22 are arranged side by side inside the heating chamber 21, with the upper and lower rows staggered to increase the heating area; the spacing of the heat dissipation fins 23 is adjusted to 7mm, fitting against the lower semicircular section and part of the upper semicircular section of the heating tubes 22 to improve heat exchange efficiency. The small end of the conical air guide shroud 211 extends 30mm below the heating tubes 22 to further concentrate the airflow.

[0037] The PT100 sensor 41 of the temperature control system 4 is increased to 6 sets. In addition to the 4 sets in Example 1, 1 set is added above the piglet drinking area and at the edge of the feeding area to accurately monitor the local temperature. The PLC controller 42 has a built-in zone control module, which independently adjusts the power of the heating tube 22 in the corresponding area according to the sensor feedback (such as the drinking area temperature needs to be 2°C higher than the activity area) to achieve accurate constant temperature in multiple areas.

[0038] The mesh size of the anti-touch net 51 of the protective component 5 is adjusted to 4mm×4mm to enhance its anti-biting performance; the length of the fixing post 52 is extended to 140mm, and reinforcing ribs are added at the welding points to ensure that the net 51 does not deform when piglets collide with it.

[0039] Example 3: Low-power, energy-saving constant temperature device

[0040] This embodiment reduces energy consumption by optimizing the power and heating modes, making it suitable for aquaculture scenarios that are sensitive to energy costs. The main differences in structure from Embodiment 1 are as follows: the centrifugal fan of the fan module 3 is a variable frequency low-power model (power 1.1kW), and its speed is dynamically adjusted by the PLC controller 42 according to the target temperature (reduced to 30% speed under low load) to reduce power consumption.

[0041] The U-shaped heating tube 22 of heating module 2 adopts intermittent heating mode: when the temperature inside the constant temperature chamber 1 reaches the set value (such as 32°C), the heating tube 22 stops working and the temperature is maintained only by the circulating airflow driven by the centrifugal fan 3; when the temperature is 1°C lower than the set value, the heating tube 22 resumes low power operation (power is 60% of the rated value) to avoid continuous high power heating.

[0042] The heat dissipation fins 23 are made of a thinner material (1mm thick), which increases the heat dissipation area while reducing material costs; the hole diameter of the perforated ventilation plate 13 is adjusted to 4mm to improve airflow uniformity and reduce local stagnation.

[0043] A filter screen is added to drain outlet 16 to prevent debris from clogging it; drain valve 161 is changed to a plug type structure, which is convenient for manual operation and reduces maintenance frequency.

[0044] This utility model is a constant temperature circulating warm air device suitable for piglet breeding. Through structural innovation and intelligent control, it provides a stable, safe and efficient constant temperature environment for piglet breeding, effectively improving the survival rate and growth quality of piglets, and has significant promotion and application value.

[0045] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A constant temperature circulating warm air device suitable for piglet breeding, comprising a constant temperature chamber (1), a heating module (2), a fan module (3), a temperature control system (4), and protective components (5), characterized in that: The constant temperature chamber (1) has an air inlet (11) with a dust filter (111) at the bottom inside, and multiple horizontal exhaust ports (12) are evenly distributed at the top. A perforated ventilation plate (13) is fixed to the inner wall of the bottom, and an exhaust port (14) is provided on one side of the top. An axial flow fan (15) is connected to the outside of the exhaust port (14). The heating module (2) includes a sealed heating box (21), in which multiple sets of U-shaped heating tubes (22) are arranged in parallel. Each set of U-shaped heating tubes (22) is tightly attached to the outside of aluminum heat dissipation fins (23). The fan module (3) consists of two sets of centrifugal fans symmetrically arranged along the heating module (2), and their air inlets are respectively connected to the first flange interface. (31) Connect the outlet of the heating box (21), and its air outlet is connected to the inner cavity of the constant temperature box (1) through the second flange interface (32); The temperature control system (4) includes multiple sets of temperature sensors (41) and PLC controller (42) distributed in the pigsty nursery area. The PLC controller (42) is electrically connected to the motor of the heating tube (22) and the fan module (3) through wires, and adjusts the power of the heating tube (22) and the speed of the fan in real time; The protective component (5) includes a non-contact protective net (51) covering the porous ventilation plate (13). The two sides of the protective net (51) are fixedly connected to the inner wall of the constant temperature box (1) through the fixing column (52).

2. The constant temperature circulating warm air device suitable for piglet breeding according to claim 1, characterized in that, The heating box (21) is provided with a conical guide hood (211) at the inlet end. The conical guide hood (211) is made of stainless steel. The diameter of the large end is the same as the diameter of the communication port on the side wall of the constant temperature box (1). The diameter of the small end is 1 / 2-2 / 3 of the diameter of the inlet end of the heating box (21). The small end extends to 20-30mm below the heating tube (22) to guide the airflow to concentrate and flow towards the heating tube (22).

3. A constant temperature circulating warm air device suitable for piglet breeding according to claim 1, characterized in that, The aluminum heat dissipation fins (23) have a wavy sheet structure with a thickness of 1-2 mm and a spacing of 5-8 mm between adjacent fins. They are closely attached to the lower semicircular arc of the heating tube (22) and evenly distributed, increasing the heat dissipation area while preventing heat from accumulating upwards.

4. A constant temperature circulating warm air device suitable for piglet breeding according to claim 1, characterized in that, The temperature sensor (41) is a PT100 platinum resistance sensor with an IP65 protection rating. It is installed at a height of 30cm and 100cm above the ground in the piglet nursery area and at the edge of the piglet activity area to collect temperature data at different locations in real time. The PLC controller (42) is set on the outer wall of the constant temperature box (1).

5. A constant temperature circulating warm air device suitable for piglet breeding according to claim 1, characterized in that, The anti-touch protective net (51) is a 304 stainless steel woven mesh with a mesh size of 5mm×5mm. The mesh surface is parallel to the perforated ventilation plate (13) and the spacing is 10-15mm, which can prevent piglets from biting and avoid blocking ventilation. The fixing post (52) is an L-shaped galvanized steel pipe with a length of 100-150mm. One end is fixed to the ground of the constant temperature box (1) by bolts, and the other end is welded to the edge of the protective net (51) to ensure that the protective net (51) is installed firmly.

6. A constant temperature circulating warm air device suitable for piglet breeding according to claim 1, characterized in that, The constant temperature chamber (1) has a drain outlet (16) at the bottom. The drain outlet (16) is located below the perforated ventilation plate (13) and is equipped with a drain valve (161) to drain the water accumulated due to air condensation, so as to avoid excessive humidity in the constant temperature chamber (1) from affecting the health of the piglets.

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