Air-return-free airlock and small-shed shrimp feeder comprising same

Abstract

The feeder comprises a material box, a vibration discharging mechanism and an air-conveying material conveying mechanism, the upper portion of the material box is provided with a material storage cavity, the bottom of the material storage cavity is provided with a hopper-shaped discharging opening, the discharging opening is in butt joint with a feeding opening of the air-return-free air seal machine, and the air-conveying material conveying mechanism is connected with a feeding opening of the air-return-free air seal machine. A vibrator is installed on the side edge of the air-return-free air seal machine, one end of the material receiving box is communicated with an installation fan, the other end of the material receiving box is connected with a conveying pipe, and the tail end of the conveying pipe is connected with a feeding device. The method is suitable for factory-like shrimp shed culture or indoor culture ponds, can be used for a long time after being set once, and does not need to be set every day. A user only needs to pour materials every day, and worry and labor are saved.

Description

Technical Field

[0001] This invention relates to the field of shrimp factory farming feeding equipment, and particularly to a non-returning air shut-off fan used in shrimp shed farming or indoor farming ponds, and a small-shed shrimp feeding machine including the air shut-off fan. Background Technology

[0002] Shrimp are delicious and nutritious, and can be made into a variety of dishes, making them very popular. Wild shrimp populations are limited and cannot meet the large market demand, so artificial breeding has become an important method. Due to factors such as temperature, factory farming often uses greenhouses or indoor ponds for cultivation, and the shrimp feed should be tailored to the shrimp's natural habits.

[0003] The shrimp feed in the feed bins is dispensed using a fan, and then transported to the rearing ponds via pipes by a blower. Because the shrimp feed is in small granular form, if backflow occurs during fan operation, the feed will be sprayed upwards, and frequent backflow will cause the granular feed to break into powder. Furthermore, the conveying pipes must be free of moisture; if the feed is not kept dry, it will become damp and clump together, preventing the feeder from functioning properly. Summary of the Invention

[0004] To address the problems existing in the prior art, the present invention provides a non-returning air shut-off fan, wherein the rotor blades are taperedly fitted with the inner cavity of the housing, and a spring is provided in the central cavity of the rotor to eliminate the gap between the blades and the housing cavity during rotation and prevent the phenomenon of backflow during material discharge of the shut-off fan.

[0005] To achieve the above objectives, the present invention provides the following technical solution: The non-return air shut-off fan includes a housing, a rotor, and a geared motor. The housing has an inlet at the top and an outlet at the bottom. The rotor is horizontally mounted in the inner cavity of the housing, with its central shaft at one end movably connected to the side end face of the housing, and its other end connected to the output shaft of the geared motor outside the housing. A spring seat is fitted in the central cavity of the rotor, and a spring is placed inside the spring seat. A fixing plate presses against the outer end of the spring, and the keyway around the fixing plate matches the keyway of the rotor. A bearing and a spacer are fitted on the output shaft of the geared motor, and the output shaft passes through the end cover of the housing. The keyway on the output shaft matches the keyway in the central hole of the fixing plate. The inner cavity of the housing has a tapered space with a larger inner diameter at one end and a smaller inner diameter at the other. The outer circumference formed by the rotor blades matches the inner cavity of the housing, and the two are tapered together.

[0006] This invention is designed for shrimp farming in sheds or indoor ponds, and provides a small-shed shrimp feeding machine that includes the aforementioned non-returning fan. The feed box outside the shed vibrates to dispense the feed, which is then blown into the shrimp pond through a conveying pipe.

[0007] The shrimp feeding machine for small sheds includes a feed box, a vibrating feeding mechanism, and a pneumatic conveying mechanism. The upper part of the feed box is a storage chamber, and the bottom of the storage chamber is a bucket-shaped feeding port. The feeding port is connected to the inlet of the non-returning air blower (as described in claim 1). The outlet of the non-returning air blower is connected to the lower receiving box. One end of the receiving box is connected to the installed blower, and the other end is connected to the conveying pipe. The end of the conveying pipe is connected to the feeding device. A vibrator is connected to the feed box.

[0008] A further improvement is that the feeding device consists of multiple tees connected at intervals to the rear section of the conveying pipe, with each tee's side branch connected to a downward-sloping nozzle. This structure is suitable for shrimp farming in sheds, where the conveying pipe is laid above the pond inside the shed, and shrimp feed is delivered at multiple points using multiple nozzles.

[0009] A further improvement is that the nozzles are arranged alternately on the left and right sides of the delivery pipe.

[0010] A further improvement is that a material distribution plate is adjustablely installed inside the connecting port of the side branch end of the tee. Adjusting the angle of the material distribution plate can control and adjust the amount of material sprayed.

[0011] To better suit indoor aquaculture ponds, the feeding device is a 360-degree rotating feeding head, positioned above the center of the shrimp pond. When the shrimp feed is delivered by air, the airflow inside the conveying pipe drives the feeding head to rotate 360 ​​degrees, allowing the powdered feed to scatter over a large area. The feeding head includes a bearing housing connected to the conveying pipe, containing a plastic bearing. The plastic bearing connects to a first 90-degree bend, which in turn connects to a second 90-degree bend.

[0012] A further improvement is that the first 90-degree bend includes a vertical pipe connected to elbow A, elbow A is then connected to horizontal pipe A, and the second 90-degree bend includes an elbow B connected to horizontal pipe A, elbow B is then connected to horizontal pipe B.

[0013] A further improvement involves a controller that connects to the vibrator, geared motor, and fan. The controller can be configured to operate in three modes: automatic, normally open, and manual. It offers a 24-hour, eight-period cyclical feeding function and allows for timed start-up and shutdown. Once set, it can be used continuously without daily adjustments. Users only need to empty the material daily, saving time and effort.

[0014] A further improvement is to install a proximity switch on the end cover of the airlock's housing, with the controller signal connected to the proximity switch and the geared motor. This allows control of the airlock's geared motor's start and stop, and thus control of material feeding.

[0015] A further improvement is to connect an air supply pipe to the conveying pipe, which is then connected to an oxygenation and aeration pipe. The oxygenation and aeration device in the pond is constantly on, and the oxygenation and aeration pipe continuously blows air into the shrimp feed conveying pipe through the air supply pipe. This eliminates water vapor in the conveying pipe, keeping it dry and preventing the shrimp feed from becoming damp or clumping. Beneficial effects

[0016] 1. The rotary valve of this invention features a tapered design at the joint between the rotor and the housing, and a spring is added to eliminate the gap, thus solving the problem of backflow.

[0017] 2. The shrimp feed conveying pipe of the present invention is connected to the aeration pipe of the oxygenation and aeration device. The gas can eliminate water vapor in the conveying pipe, making the feed less susceptible to moisture and less likely to clump, thus ensuring smooth airflow of the shrimp feed.

[0018] Third, the different feeding devices of this invention are suitable for different factory farming scenarios. Multiple nozzles are connected to the conveying pipe and arranged at multiple points in the shed, which is suitable for shrimp shed farming; the end of the conveying pipe is connected to a 360-degree rotating feeding head, which can rotate 360 ​​degrees under the wind blowing feeding, and is suitable for placement above the center of the indoor shrimp pond.

[0019] IV. The controller connects to the vibrator, geared motor, and fan. The controller has three modes: automatic, normally open, and manual. Automated control allows for 24-hour, eight-period cyclic feeding, and timed start-up and shutdown. Once set, it can be used long-term without daily setup. Users only need to empty the material daily, saving time and effort. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the explosion of the blower in Example 1; Figure 2 This is a cross-sectional view of the blower in Example 1; Figure 3 This is a schematic diagram of the shrimp feeding machine in Example 2; Figure 4 This is a cross-sectional view of the tee structure in Example 2; Figure 5 This is a schematic diagram of the shrimp feeding machine in Example 3; Figure 6 This is a schematic diagram of the 360-degree rotating throwing head in Example 3; Figure 7 This is a cross-sectional view of the 360-degree rotating throwing head structure in Example 3; Figure 8 This is a diagram of the controller's electronic screen interface in this invention. Detailed Implementation Example 1

[0021] like Figure 1 , Figure 2As shown, the non-returning airlock includes a housing 21, a rotating wheel 22, a spring seat 23, a spring 24, a fixing plate 25, an end cover 26, a spacer 27, a bearing 28, and a geared motor 29. The housing 21 has an inlet at the top and an outlet at the bottom. The rotating wheel 22 is horizontally mounted in the inner cavity of the housing 21, with its central shaft at one end movably connected to the side end face of the housing 21, and its other end connected to the output shaft of the geared motor 29 outside the housing. Specifically, the central cavity of the rotating wheel 22 has a stepped surface, and the spring seat 28... The device is assembled in three ways. A spring 24 is placed inside a spring seat 23. A fixing plate 25 presses against the outer end of the spring 24, and the keyway around the fixing plate 25 engages with the keyway of the rotating wheel 22. A bearing 28 and a spacer 27 are mounted on the output shaft of the geared motor 29. The output shaft passes through the end cover 26 of the housing, and its keyway engages with the keyway in the center hole of the fixing plate 25. The inner cavity of the housing 21 has a tapered shape with one end larger than the other. The outer circumference formed by the blades of the rotating wheel 22 matches the inner cavity of the housing, and the two are tapered together. A proximity switch 20 is installed on the end cover 26 of the housing of the airlock.

[0022] When the geared motor is turned on, its output shaft engages with the keyway between the fixed plate and the rotating wheel. The rotation of the output shaft drives the fixed plate to rotate, which in turn drives the rotating wheel to rotate. The fixed plate presses against a spring, which allows it to move slightly back and forth under the action of the spring, adjusting the gap between the rotating wheel and the housing. Example 2

[0023] This embodiment is suitable for shrimp farming in sheds, such as... Figure 3 , Figure 4 As shown, the shrimp feeding machine for small sheds includes a feed box, a vibrating feeding mechanism, and a pneumatic conveying mechanism. The feed box 1 is installed on the ground outside the shed. The upper part of the feed box 1 is a storage chamber, and the bottom of the storage chamber is a bucket-shaped feeding port. The feeding port connects to the inlet of the non-returning airlock 2 described in Embodiment 1. The outlet of the non-returning airlock 2 connects to the lower receiving box 3. A vibrator 4 is installed on the side of the non-returning airlock 2. One end of the receiving box 3 is connected to a fan 5, and the other end is connected to a conveying pipe 6. The conveying pipe 6 extends into the shed, above the shrimp pond, from one end to the other. Multiple tees 71 are connected at intervals on the conveying pipe 6 inside the shed. The side branches of each tee 71 are connected to downward-sloping nozzles 72. The nozzles 72 are alternately arranged on the left and right sides of the conveying pipe 6. A feed distribution plate 711 is adjustablely installed in the connecting port of the side branch of each tee 71.

[0024] Vibrator 4 vibrates, and blower 2 operates to continuously transport shrimp feed from feed bin 1 to feed receiving box 3. Blower 5 blows air to transport the shrimp feed from the feed receiving box to various nozzles 72 through conveying pipe 6, spraying it to multiple locations in the shrimp pond to achieve feeding.

[0025] An air supply pipe 9 is connected to the conveying pipe 6 that enters the shed, and the air supply pipe is connected to the oxygenation and aeration pipe. The oxygenation and aeration device works continuously 24 hours a day to oxygenate the shrimp. The gas in the oxygenation and aeration pipe is blown into the conveying pipe 6 through the air supply pipe 9 to keep the conveying pipe dry and prevent the shrimp feed from getting damp and clumping inside the pipe.

[0026] It also includes a controller 8 mounted on the material bin bracket. The controller 8 is connected to the vibrator 4, the proximity switch 20, the geared motor 29, and the fan 5. The controller 8 has three modes: automatic, normally open, and manual. It can perform 24-hour, eight-period cyclic feeding, and can be timed to start and stop. Once set, it can be used for a long time without the need for daily settings. Users only need to empty the material each day, saving time and effort.

[0027] Instructions for use: See Figure 8 , 1. Time synchronization (setting up a clock and calibrating it to Beijing time): Tap "Time" to see the lock icon in the clock dialog box is now open. Press the "Hour" button to set the clock, and press the "Minute" button to set the minutes. The clock will automatically lock after setting.

[0028] 2. Automatic mode: Automatic switching between modes (set feeding time, up to eight time periods can be set): Select "Automatic" and "Stop" modes. Repeatedly press the "Time Segment" button to select 1-8 time segments. The cursor will flash when a segment is selected. Press "Set" to make the power-on clock flash. Press the "Hour" button to set the power-on clock, then press the "Minute" button to set the power-on minute. Press "Set" again to make the power-off clock flash. Press the "Hour" button to set the power-off clock, then press the "Minute" button to set the power-off minute. After completion, press "Power On" to enter standby mode. The device will automatically start working when the time is up.

[0029] Clear (clear unused time periods): Press the "Time Period" button to select each time period, and press the "Clear" button to clear each time period.

[0030] 3. Always-on mode: Switch between modes: always on, always on display. Press "Power On" to run; you must manually press "Power Off" to stop. (It has a no-material stop function that will automatically stop when there is no material left.) It will not restart.

[0031] 4. Manual Mode: Switch to manual mode by pressing the "+" button. The 5M timer display indicates a 5M (minute) timer. The cycle timer is set to minutes, with a maximum of 720 minutes. It will automatically stop at your set minute only after pressing the "Power On" button. If the material bin is empty within the set time, the machine will stop after three minutes with a flashing "No Material" indicator. Refilling the bin will automatically resume normal operation.

[0032] This machine has a setting (minute cycle) "Working 01M" which means the entire machine starts up in one minute. Adjustable from 01M to 99M. "Pause" 01M means the entire machine stops for one minute; 01M-99M is adjustable. Multiple feeding cycles can be set within one hour.

[0033] "Feeding" 01s refers to the discharge rate. It is adjustable from 01s to 99s. "Feeding" 01s refers to the output amount. 01s means 150g is equivalent to 3 liang (approximately 150 grams). "Feeding" 02s refers to the output amount. 02s means 300g, which is equivalent to 6 liang (approximately 300 grams). "Feeding" 03s refers to the output quantity. 03s is 450g, which is equivalent to 9 liang (approximately 450g) of material. "Feeding" 04s refers to the output amount. 04s is 600g, which is 1 jin 2 liang (approximately 0.5 kg). "Feeding" 05s refers to the output amount. 05s is 750g, which is 1 jin 5 liang (approximately 0.75 kg). "Feeding" 06s refers to the output amount. 06s is 900g, which is 1 jin 8 liang (approximately 0.5 kg). "Feeding" 07s refers to the output amount. 07s is 1050g, which is 2 jin 1 liang (approximately 0.5 kg). "Feeding" 08s refers to the output amount. 08s is 1200g, which is 2 jin 4 liang (approximately 0.6 kg). "Feeding" 09s refers to the output amount. 09s is 1350g, which is 2 jin 7 liang (approximately 0.35 kg). "Feeding" 10s refers to the output amount. 10s is 1500g, which is 3 jin (approximately 1.5 catties). "Feeding" 11s is the output amount. 11s is 1650g, which is 3.3 jin (1.5 catties) of material. "Interval" 01s is the stop time, which is adjustable from 01s to 99s.

[0034] For any user requesting a specific quantity of material to be added per hour, the process must be divided into 60-minute segments. Within each 60-minute segment, the process must be broken down into M minutes of work and M minutes of downtime. "Work" refers to this specific task. Within a 0.1M minute, divide the time into 60-second intervals. Within each 60-second interval, divide the time into "feeding" intervals and "interval" intervals. This is a quick way to calculate the amount of material to be fed.

[0035] Users can choose from three feeding modes: automatic, always-on, and timed. For automatic mode, the time period must be set beforehand. In always-on mode, the machine automatically stops when there is no material. For timed mode, the maximum time is 720 minutes; the machine automatically stops when the countdown timer expires. Note: Each function setting requires pressing the "Power On" button to function. Example 3

[0036] This embodiment is suitable for indoor shrimp pond culture, such as Figures 5 to 7As shown, the feeding device 7 of the shrimp feeder is replaced with a 360-degree rotating throwing head, and the rest is the same as in Embodiment 2. The throwing head is located above the center of the shrimp pond and includes a bearing box 73 connected to the conveying pipe. A plastic bearing 74 is installed inside the bearing box 73. The plastic bearing 74 is connected to a first 90-degree bend 75, which is then connected to a second 90-degree bend 76. The first 90-degree bend 75 includes a vertical pipe 751 connected to a bend A 752, which is then connected to a horizontal pipe A 753. The second 90-degree bend 76 includes a bend B 761 connected to the horizontal pipe A 753, which is then connected to a horizontal pipe B 762.

[0037] The blower blows shrimp feed to the feeding head, which can rotate 360 ​​degrees under the influence of the airflow, causing the shrimp feed to scatter over a large area above the center of the pond, thus achieving the desired feeding result.

[0038] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiments. All technical solutions falling within the scope of the present invention's concept are within the scope of protection of the present invention. It should be noted that for those skilled in the art, any improvements and modifications made without departing from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. A non-return air shut-off fan, comprising a housing (21), a rotor (22), and a geared motor (29), wherein the housing (21) has an inlet at the top and an outlet at the bottom, the rotor (22) is horizontally mounted in the inner cavity of the housing (21), one end of which is movably connected to the side end face of the housing (21) via its central shaft, and the other end is connected to the output shaft of the geared motor (29) outside the housing via a transmission connection, characterized in that: A spring seat (23) is fitted in the central cavity of the wheel (22), and a spring (24) is placed inside the spring seat (23). A fixing plate (25) is pressed on the outer end of the spring (24), and the keyway around the fixing plate (25) is fitted with the keyway of the wheel (22). A bearing (28) and a spacer (27) are fitted on the output shaft of the geared motor (29). The output shaft passes through the end cover (26) of the housing, and the keyway on it is fitted with the keyway in the central hole of the fixing plate (25). The inner cavity of the housing (21) has a large inner diameter at one end and a small inner diameter at the other end, forming a conical space. The outer circumference formed by the blades of the wheel (22) matches the inner cavity of the housing, and the two are in a conical fit.

2. A shrimp feeding machine for small sheds, comprising a feed hopper, a vibrating feeding mechanism, and a pneumatic conveying mechanism, characterized in that: The upper part of the material box (1) is a storage chamber, and the bottom of the storage chamber is a bucket-shaped discharge port. The discharge port is connected to the inlet of the non-returning air shut-off fan (2) of the right 1. The outlet of the non-returning air shut-off fan (2) is connected to the receiving box (3) below. One end of the receiving box (3) is connected to the fan (5), and the other end is connected to the conveying pipe (6). The end of the conveying pipe (6) is connected to the feeding device (7). A vibrator (4) is connected to the material box (1).

3. The shrimp feeding machine for small sheds according to claim 2, characterized in that: The feeding device (7) is a series of tees (71) connected at intervals to the rear section of the conveying pipe (6), with each tee (71) having a downwardly inclined nozzle (72) connected to its side branch.

4. The shrimp feeding machine for small sheds according to claim 3, characterized in that: The nozzles (72) are arranged alternately on the left and right sides of the delivery pipe (6).

5. The shrimp feeding machine for small sheds according to claim 3, characterized in that: A material distribution plate (711) can be adjusted and installed in the connecting port of the side branch end of the tee (71).

6. The shrimp feeding machine for small sheds according to claim 2, characterized in that: The feeding device (7) is a 360-degree rotating throwing head. The throwing head includes a bearing box (73) connected to the conveying pipe. A plastic bearing (74) is installed inside the bearing box (73). The plastic bearing (74) is connected to a first 90-degree bend (75). The first 90-degree bend (75) is then connected to a second 90-degree bend (76).

7. The shrimp feeding machine for small sheds according to claim 6, characterized in that: The first 90-degree bend (75) includes a vertical pipe (751) connected to a bend A (752), and bend A (752) is then connected to a horizontal pipe A (753). The second 90-degree bend (76) includes a bend B (761) connected to a horizontal pipe A (753), and bend B (761) is then connected to a horizontal pipe B (762).

8. The shrimp feeding machine for small sheds according to claim 2, characterized in that: Includes a controller (8), which is connected to a vibrator (4), a geared motor (29), and a fan (5).

9. The shrimp feeding machine for small sheds according to claim 8, characterized in that: The air shut-off fan has a proximity switch (20) installed on the housing end cover (26), and the controller (8) is connected to the proximity switch (20) and the geared motor (29).

10. The shrimp feeding machine for small sheds according to claim 2, characterized in that: The delivery pipe (6) is connected to the air supply pipe (9), which is connected to the oxygenation and aeration pipe.

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