JP2007252307A - Ventilator for fodder tank and fodder tank attached in the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a ventilator for reducing the difference in temperature between the inside and the outside of a fodder tank. <P>SOLUTION: The ventilator usable for the fodder tank having a fodder-charging opening at the upper part and a fodder-taking out opening at the lower part is constituted of a lid part for the fodder tank, having a ventilation opening for ventilating the air whose temperature is increased in the fodder tank, and a rain water-preventing cylinder for preventing the invasion of the rain water from the ventilation opening, and installed in the fodder-charging opening. An insect-proof net is installed in the ventilation opening. A ventilation fan is stored in a part higher than the fodder-charging opening and lower than the ventilation opening. The lid part for the fodder tank is constituted of an umbrella-shaped material covering the opening part. The ventilation fan is driven by a windmill installed in the umbrella-shaped material or by a power. The fodder can be replenished to the fodder tank by removing a hook at the charge of the fodder, and half-turning the ventilator by using an attaching tool as the fulcrum when charging the fodder. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a device for performing ventilation of air in a feed tank and a feed tank to which the device is attached.

Livestock feed is broadly classified into concentrated feed containing roughage such as grass and rice straw and cereals.
The livestock farmer temporarily stores the concentrated feed purchased from the feed company in a feed tank installed outside the livestock barn (FIG. 5A). The feed tank is usually made of a glass fiber reinforced plastic hopper, and feed is supplied from a supply port provided in the upper part, and the feed is taken out from an outlet provided in the lower part. Except during operations such as feed supply, the supply port is covered with a lid to prevent rainwater from entering (FIGS. 5B and 16). The feed tank is greatly influenced by the outside temperature because it is made of plastic. In addition, the feed tank outside is not affected by air temperature because there is no air vent to prevent rainwater from entering. For this reason, as the temperature rises, the temperature in the feed tank rises rapidly, and the concentrated feed has heat. Oxidation is promoted in concentrated feed with heat. Oxidized concentrated feed has the problem of adversely affecting livestock health.

  Daily fluctuations in air temperature greatly affect fluctuations in the temperature of air in the feed tank. The concentrated feed in the feed tank has a temperature difference due to a sudden change in temperature in the feed tank (see FIGS. 9 and 10). This temperature difference leads to the occurrence of condensation (see FIGS. 11 and 12). Condensation leads to the generation of mold and pests, resulting in deterioration of the quality of the concentrated feed and wear of the feed nutrient, resulting in a reduction in the quality of the concentrated feed. Feeding concentrated feed with degraded quality has problems such as reduced productivity of livestock and livestock products.

  The gap between the feed administration port and the administration port of the feed tank allows the invasion of mice, and there is a drawback that the concentrated feed cannot be managed hygienically due to the contamination and odor caused by feces.

  It is well known that feed that has deteriorated or deteriorated in quality has a negative impact on livestock health (see Fig. 1), and as measures to improve these measures, livestock farmers can take long-term storage of concentrated feed. In order to avoid this, it is necessary to maintain the quality of the feed by making the delivery from the feed company small, and there is no technology for preventing the quality of the concentrated feed stored in the feed tank from deteriorating.

  Problems to be solved by the present invention are as follows: (1) Since the feed tank does not have an air vent to prevent the intrusion of rainwater, the temperature in the feed tank increases as the daytime temperature rises. The temperature of the feed rises more rapidly than the temperature, and the concentrated feed stored in the feed tank has heat, and this heat cannot oxidize the concentrated feed and prevent deterioration in quality. (2) Air temperature Due to the decrease in temperature, the temperature rise above the air temperature in the feed tank decreases, and the concentrated feed with low thermal conductivity continues to have heat even when the air temperature decreases, causing condensation from the temperature difference and inducing the occurrence of mold and pests, The point which cannot prevent deterioration of quality (3) With the fall of air temperature, the humidity in a feed tank rises rapidly, so that the temperature which raised in the feed tank is high. Concentrated feed storage in a high-humidity feeding tank cannot prevent quality deterioration. (4) From the gap between the lids for the feed tank, it is easy for mice to enter. It is a point that the quality of concentrated feed cannot be maintained hygienically.

In order to alleviate the deterioration of feed quality due to the increase in temperature and humidity in the feed tank in summer, it is necessary to maintain the quality of the feed by reducing the effects of temperature and humidity rise in the feed tank and the temperature and humidity difference between day and night . For this reason, the present invention makes it possible to reduce the rise of the temperature in the feed tank as the temperature rises due to the influence of the outside air temperature, and the oxidation and condensation due to the heat of the concentrated feed stored in the feed tank An object of the present invention is to provide a feed tank ventilator that reduces the temperature difference between the inside and outside of the feed tank, which is the cause of the occurrence of water.
In addition, it aims to develop a ventilation system for feed tanks that can prevent the intrusion of rainwater, rats, etc. due to the ventilation function of air with increased temperature and humidity, and can be easily installed in existing feed tanks. To do.

The gist of the present invention is the following feed tank ventilator (1) to (7).
(1) A feed tank ventilator provided with a feed inlet at the top and a feed outlet at the bottom, and a vent for ventilating the air whose temperature has risen in the feed tank, and rainwater from the vent A feed tank ventilator comprising a feed tank lid provided at a feed administration port, having a rainwater intrusion prevention cylinder for preventing the intrusion of water. In order to ventilate the air whose temperature has risen in the feed tank, a vent for extracting at least one air is provided in the lid for the feed tank installed at the top of the feed tank. A cylinder for preventing intrusion is provided.
(2) The feed tank ventilator according to (1), wherein an insect repellent net for preventing insects from entering is installed at the ventilation opening.
(3) The ventilator for a feed tank according to (1) or (2), in which a ventilator for forcibly ventilating air whose temperature has risen in the feed tank is placed above the feed inlet and below the vent. . The air ventilation port forcibly exhausts the air whose temperature has risen in the feed tank, and reduces the sudden rise in temperature in the feed tank. Further, the air ventilation port forcibly exhausts the air whose temperature in the feed tank has increased, thereby reducing a rapid increase in humidity in the feed tank. Furthermore, the air vent vents the air at a high temperature in the feed tank by the air vent to keep the temperature inside and outside the feed tank in equilibrium.
(4) The feed tank ventilator according to (1), (2), or (3), wherein the feed tank lid is configured with an umbrella covering the opening.
(5) The feed tank ventilation device according to (4), wherein the ventilation fan is operated by a windmill or power provided on the umbrella. In order to effectively ventilate the air, the fan is operated by a windmill or power and is characterized by efficient ventilation.
(6) It has a cylinder part joined to the feed administration port of the feed tank, and this cylinder part is provided with a hooking tool on one side and a fitting on the other side, hooked on the feed tank with this hooking tool, The feed tank ventilator according to any one of (1) to (5), wherein the hook is removed, the attachment is a fulcrum, and the feed tank is supplemented with feed by half rotation of the apparatus. The feed can be replenished without removing the ventilation device from the feed tank.
(7) The feed tank ventilator according to (6), wherein a net for preventing the invasion of a rat is installed in a cylindrical portion joined to a feed administration port of the feed tank. Install a net to prevent the invasion of mice and prevent the invasion of mice.

The gist of the present invention is the following feed tanks (8) and (9).
(8) A feed tank equipped with the feed tank ventilator according to any one of (1) to (7).
(9) The feed tank according to (8), which is installed by replacing the existing lid for the feed tank. It is characterized in that it can be used in place of a lid for an existing feed tank.

  In the embodiment of the present invention, the temperature in the feed tank reached 49.8 ° C. when the temperature was 31.3 ° C., but the temperature in the feed tank provided with the feed tank ventilation device of the present invention was 30 By installing the feed tank ventilation device of the present invention, the temperature rise of 19.7 ° C. was prevented. In the embodiment of the present invention, the humidity in the feed tank reached 74% when the humidity of the outside air was 40%, but at this point in the feed tank in which the ventilator for the feed tank of the present invention was installed. Humidity was 50%, and the increase in humidity of 24% was prevented by installing the feed tank ventilation device of the present invention. For this reason, the feed tank ventilator configured as described above prevented an increase in temperature and humidity in the feed tank, and was not damaged by the intrusion of rainwater, pests, and the invasion of rats.

The purpose of reducing the temperature difference and the humidity difference inside and outside the feed tank without deterioration of the quality of the concentrated feed due to the intrusion of rainwater and rats is used by replacing the feed tank lid with the device of the present invention in the existing feed tank Realized to do. It can be used by replacing the lid for an existing feed tank. Concentrated feed can be replenished without removing the device from the feed tank (FIGS. 13 and 21).
According to the present invention, it is possible to provide an apparatus for reducing the productivity of livestock and the quality of livestock products by preventing the quality of the concentrated feed stored in the feed tank from being deteriorated due to the influence of heat.

  Concentrated feed is delivered from a feed company by a dedicated concentrate transport vehicle. For this reason, the feed tank has a structure in which the concentrated feed can be easily transferred from the vehicle dedicated to transporting the concentrated feed. Therefore, the feed tank is installed outdoors as an incidental facility for temporarily storing concentrated feed (FIG. 5A), and there is no function for maintaining the quality of the stored concentrated feed until now. The concentrated feed stored in the feed tank is oxidized and deteriorated due to the influence of heat and the quality is deteriorated. When a concentrated feed with deteriorated quality is fed to livestock, the productivity of livestock and the quality of livestock products decrease.

  The present invention provides a device for reducing the deterioration of quality of livestock products and the quality of livestock products by preventing deterioration of the quality of concentrated feeds stored in the feed tanks due to the influence of heat. In order to forcibly ventilate the air whose temperature has been increased in the above, a vent for extracting at least one air is provided in the lid for the feed tank installed at the top of the feed tank. A feed tank ventilator comprising a cylinder for preventing intrusion. The air whose temperature has risen in the feed tank is stored in the upper part of the feed tank by natural convection. Therefore, it is possible to effectively exhaust the air in the feed tank having a high temperature by having a function of providing a ventilation function in the upper part of the feed tank. The air ventilation port forcibly exhausts the air whose temperature has risen in the feed tank, and reduces the sudden rise in temperature in the feed tank.

  A feed administration port for replenishing concentrated feed is provided at the top of the feed tank. For this reason, it is not necessary to open a new ventilation port in the feed tank by providing a ventilation function for the lid of the feed administration port of the feed tank and preventing rainwater from entering the feed tank. By replacing the mouth lid with the device of the present invention, it can be installed in an existing feed tank.

  In order to effectively ventilate the air, the fan is operated by a windmill or power and is characterized by efficient ventilation. The air ventilation port forcibly exhausts the air whose temperature has risen in the feed tank, and reduces the sudden rise in temperature in the feed tank. The feed tank apparatus is provided with a wind turbine that utilizes natural wind or a ventilation fan that is driven by power to forcibly ventilate the air in the feed tank.

  Details of the present invention will be described in Examples. The present invention is not limited in any way by these examples.

The feed tank ventilation device of the present invention and the feed tank to which it is attached will be described with reference to the drawings.
The feed tank ventilator of the present invention (hereinafter sometimes referred to as “the present invention apparatus”) is a ventilator used for a feed tank provided with a feed administration port at the top and a feed outlet at the bottom. Consists of a feed tank lid provided at the feed administration port, which has a ventilation port 7 for ventilating air whose temperature has risen in the feed tank and a rainwater intrusion prevention cylinder 3 for preventing rainwater from entering through the ventilation port Monkey.
FIG. 2 is a cross-sectional view of the apparatus of the present invention, and the ventilation fan 8 is rotated by the installation of the windmill 1 powered by natural wind, and the air in the feed tank can be forcibly ventilated (FIG. 14). reference). At this time, if the ventilation fan 8 is operated by power (see FIGS. 18 to 20), the windmill 1 is not necessary. In the case where the ventilation fan is operated by power, it is also effective to install a hose so that the wind of the small fan is blown to the lower part of the feed tank as shown in FIG.

  In addition, it has an umbrella 2 for preventing rainwater from entering, and a cylinder 3 for preventing rainwater from entering from the ventilation opening 7, and is a hook 4 that is hooked to the feed tank. When the concentrated feed is administered, the hook 4 is removed. The feed tank fixture 9 is used as a fulcrum, and the apparatus is configured to replenish concentrated feed to the feed tank by half rotation. A net 6 for preventing the invasion of rats is installed in the cylinder 5 joined to the concentrated feed administration port of the feed tank, and an insect-proof net 10 for preventing the invasion of insects is installed in the ventilation port 7. Is attached with a feed tank fixture 9 for joining with the feed tank. The air whose temperature has risen in the feed tank passes through the cylinder 5 from the feed tank and is discharged from the ventilation port 7 to the outside of the feed tank.

  FIG. 3 is a bottom view of the device of the present invention. 6 is a net for preventing a mouse from entering through the gap between the feed tank and the lid for the feed tank (see FIGS. 7 and 15).

  FIG. 4 is a side view of the apparatus of the present invention installed in a feed tank. The feed tank hooking tool 4 is opened and closed with a feed tank mounting tool 9 serving as a fulcrum. At the time of opening, it is possible to replenish the concentrated feed from the concentrated feed administration port of the feed tank (see FIGS. 13 and 21). In the case where the ventilation fan is operated by power, a hose can be installed so as to blow the wind of the ventilation fan (small fan) as shown in FIG. 19 to the lower part of the feed tank (see FIG. 21).

  The performance investigation of the feed tank ventilator of the present invention and the feed tank to which it is attached will be described with reference to the drawings.

Newly designed pinwheel type feed tank cooling dehumidification ventilation lid
(Hereafter, abbreviated as “Piggle” type lid) is a lid that prevents rainwater and rats from entering and ventilates, does not require power, lowers the maximum temperature in the feed tank, and day and night in the feed tank. Reduce fluctuations in temperature difference. In addition, it has the effect of alleviating the sudden rise in temperature in the feed tank and shortening the time zone during which the temperature is rising. Further, there is an effect of reducing the humidity in the feed tank from night to early morning by reducing the humidity change during the day and night and exhausting the air whose temperature has increased in the feed tank. From these things, it is suggested that the pinwheel type lid is effective in reducing deterioration and quality deterioration of the feed in the feed tank.

(Performance survey results)
In order to investigate the ventilation effect, the pinwheel type lid made as a prototype with a galvanized iron plate has the structure shown in the figure (FIGS. 7 and 8A, B). The power of the ventilator was a four-blade Savonius-type windmill that rotated only in a certain direction with natural wind in order to exhaust only the air in the feed tank, and the ventilator had five propeller blades.

A normal feed tank (about 320 cm in height and about 180 cm in width) containing about 1 ton of commercially available concentrated feed, and an upper part (20 cm below the feed inlet) and a middle part (feed inlet) The change in temperature and humidity (under 160 cm from the top) was investigated every hour for 5 days. The average temperature for the five days studied was 24.2 ° C (maximum 31.1 ° C, minimum 15.8 ° C), and the average humidity was 55.6% (maximum 82.0%, minimum 28.0%).

1) Hourly average temperature change measured for 5 days at the top of the feed tank (Figure 9)
The temperature of the upper part of the normal feed tank increased with increasing air temperature, and after 8 o'clock the temperature in the feed tank became higher than the air temperature. After that, the maximum temperature in the feed tank reached 45.8 ° C, 16.3 ° C higher than the air temperature. After 19:00, the temperature in the feed tank was lower than the temperature, and the lowest temperature was 18.1 ° C.
The feed tank with a pinwheel-type lid showed the same transition, but at 14:00 when the normal feed tank was 16.3 ° C higher than the temperature, it could be suppressed by a rise of 10.9 ° C. The installation of the type lid had the effect of lowering the temperature in the feed tank by 5.4 ° C.
In addition, at 12:00 when there was the most difference between the pinwheel type lid and the temperature in the normal feed tank, the temperature is as low as 14.6 ° C, and it has the effect of mitigating the sudden rise in temperature in the feed tank. The time zone during which the temperature is rising has also been shortened. Furthermore, the difference between the maximum and minimum temperatures in the daily feed tank was 27.7 ° C in the normal feed tank, but it was 22.1 ° C when a pinwheel cover was installed, reducing the temperature fluctuation of 5.6 ° C.

2) Hourly average temperature change measured for 5 days in the middle of the feed tank (Figure 10)
The middle temperature in the feed tank has the same tendency as the upper part, and the temperature in the normal feed tank rises as the temperature rises.From 9 o'clock onwards, the temperature in the feed tank becomes higher than the temperature. The maximum temperature in the feed tank reached 39.6 ° C, 10.5 ° C higher than the temperature. After 19:00, the temperature in the feed tank was lower than the temperature, and the lowest temperature was 18.2 ° C.
The feed tank with the pinwheel-type lid showed the same transition, but at 16:00 when the normal feed tank was 10.5 ° C higher than the temperature, it could be suppressed by an increase of 6.1 ° C. The effect of lowering the temperature in the feed tank by 4.4 ℃ was obtained by installing the
In addition, the effect of mitigating the sudden rise in temperature in the feed tank was also observed by installing a pinwheel-type lid. The time zone during which the temperature is rising has also been shortened. Furthermore, the difference between the maximum and minimum temperature in the daily feed tank was 21.4 ° C in the normal feed tank, but it became 16.7 ° C by installing a pinwheel cover, reducing the temperature fluctuation of 4.7 ° C. .

3) Hourly average humidity change measured for 5 days at the top of the feed tank (Figure 11)
The upper humidity in the normal feed tank tended to be higher than the humidity of the outside air from the evening to the next morning, and the humidity in the feed tank increased by up to 21.4% from the humidity of the outside air. The daily maximum and minimum humidity were 77.4% and 19.6%, respectively, and the humidity fluctuation was 57.8%.
The maximum humidity in the normal feed tank was 77.4% at 5 o'clock, which was 2.8% higher than the outside air humidity of 74.6%, whereas the humidity in the feed tank with a pinhole cover was 66.4%. The effect was 8.2% lower than the humidity of outside air. The minimum humidity was 26.4%, the daily humidity difference was 40.0%, and fluctuations in humidity were reduced by 17.8%. In addition, during the period of high humidity from night to early morning, the maximum humidity was reduced by 14.6% due to the installation of a pin-shaped lid, and the time for high humidity was greatly shortened.

4) Hourly average humidity change measured for 5 days in the middle of the feed tank (Figure 12)
The normal humidity in the normal feed tank tended to be higher than the humidity of the outside air from the evening to the next morning, as in the upper part, and the humidity in the feed tank increased by a maximum of 18.8% from the humidity of the outside air. The daily maximum and minimum humidity were 74.2% and 34.8%, respectively, and the humidity fluctuation was 39.4%.
The maximum humidity in the normal feed tank was 74.2% at 5 o'clock, which was almost the same humidity as the outside air humidity of 74.6%, whereas the humidity in the feed tank with a pinwheel cover was 67.6% And it was effective in reducing the humidity of outside air by 7.0%. The minimum humidity was 40.8%, the daily humidity difference was 26.8%, and the humidity fluctuation was reduced by 12.6%. In addition, during the time when the humidity increased from night to early morning, installing a pinwheel cover lowered the humidity by as much as 10.8%.
From these facts, it is suggested that the pinhole type lid that reduces the increase in humidity in addition to the effect of the rising temperature in the feed tank is effective in reducing the deterioration and quality deterioration of the feed.

  The feed inlet is used as a place to effectively vent the hot air in the feed tank by natural convection, so there is no need to open a new vent in the feed tank, and the air in the feed tank is efficiently ventilated. This is a lid with a structure that forcibly exhausts air and prevents intrusion of rainwater, etc., and can be easily replaced with a conventional lid, and the power for efficient ventilation is electric as natural wind power Is not necessary, and it can be easily used in mountainous barns.

It is drawing explaining modification | denaturation of the concentrated feed by the temperature rise in a feed tank. It is sectional drawing of the lid | cover for feed tanks by this invention. Example 1 It is a bottom view of the lid | cover for feed tanks by this invention. Example 1 It is the side view which installed the lid | cover for feed tanks by this invention. Example 1 This is a photograph of a commonly used feed tank installed outdoors. A: Feed tank B: Feed tank upper part (lid) It is drawing explaining the structure of the lid | cover for feed tanks by this invention. It is a model surface explaining the pinwheel type lid of Example 2. 6 is a photograph explaining a pinwheel-type lid of Example 2. FIG. A: Pinwheel type lid inside (5 ventilation fans) B: Pinwheel type lid (right) installed in the feed tank and upper Savonius type windmill It is a change in the upper temperature in the feed tank (average for 5 days). Middle temperature change in feed tank (average for 5 days). It is a change in the upper humidity in the feed tank (average for 5 days). Middle humidity change in feed tank (average for 5 days). It is drawing explaining the concentrated feed supply method of the lid | cover for feed tanks. It is apparatus sectional drawing explaining the axis | shaft of a windmill and a ventilation fan. It is an apparatus permeation | transmission figure explaining the relationship between a mouse | mouth penetration | invasion prevention net | network and a feed tank. It is a photograph for explaining the outline of the existing lid installed in the feed tank. It is a photograph for demonstrating the place which installed this invention apparatus (with a windmill) in the feed tank. It is a photograph which shows the state which hung the cord of the device of the present invention (without a windmill) powered by solar energy along the feed tank. It is the photograph for demonstrating the place which installed the ventilation fan (small fan) which operate | moves by electricity in the center part. The ventilation fan that operates with solar energy is a photograph for explaining the operation from sunrise to sunset. It is a photograph for demonstrating the place opened in order to supply a concentrated feed to a feed tank.

Explanation of symbols

1 Windmill 2 Umbrella to prevent rainwater from entering 3 Rainwater intrusion prevention tube (rain cover)
4 Feed tank hook 5 Cylindrical 6 Mouse rod net 7 Ventilation opening 8 Ventilation fan 9 Feed tank fixture 10 Pest control net (insect net)

Claims (9)

  A ventilator used for a feed tank with a feed inlet at the top and a feed outlet at the bottom, ventilating the air whose temperature has risen in the feed tank, and intrusion of rainwater from this vent A feed tank ventilator comprising a feed tank lid provided at a feed administration port, which has a rainwater infiltration prevention cylinder.   The ventilator for a feed tank according to claim 1, wherein an insect screen for preventing insects from entering is installed in the ventilation port.   The ventilator for a feed tank according to claim 1 or 2, further comprising a ventilator for forcibly ventilating air whose temperature has risen in the feed tank above the feed inlet and below the vent.   4. The feed tank ventilator according to claim 1, 2 or 3, wherein the feed tank lid is formed of an umbrella covering the opening.   The ventilator for a feed tank according to claim 4, wherein the ventilation fan is operated by a windmill or power provided on the umbrella.   There is a cylinder part joined to the feed administration port of the feed tank, and this cylinder part is provided with a hooking tool on one side and a mounting tool on the other side. The feed tank ventilator according to any one of claims 1 to 5, wherein the feed tank is replenished with the mounting tool as a fulcrum and the apparatus rotating halfway. The ventilator for a feed tank according to claim 6, wherein a net for preventing the invasion of a rat is installed in a cylinder part joined to a feed administration port of the feed tank. A feed tank provided with the feed tank ventilator according to claim 1. 9. The feed tank according to claim 8, wherein the feed tank is replaced with a lid for an existing feed tank.