Ditching device for rice field fry rearing

Abstract

The utility model discloses a ditching device for rice field fry rearing. The ditching device comprises a bottom plough piece, a mud turning piece, a screw rod, a deep tilling piece, a first sheet-shaped rod, a second sheet-shaped rod, a force arm rod, a handle, a sleeve, a herringbone support and a guide warping plate. A mud turning sheet with an arc-shaped structure is connected to the bottom plough sheet, a screw rod is vertically connected to the middle of the tail part of the bottom plough sheet, and an adjustable tilling depth sheet is connected to the upper end of the screw rod; the tail end and the front portion of the left side edge of the bottom plough piece are connected with a first sheet-shaped rod and a second sheet-shaped rod respectively, a force arm rod is connected between the first sheet-shaped rod and the second sheet-shaped rod and is in an inclined state, the front end of the force arm rod is higher than the rear end of the force arm rod, the top end of the force arm rod is sleeved with a sleeve, and the middle of the force arm rod is sleeved with a sleeve in a limiting mode. The lower end of the sleeve is connected with a guide warping plate through a herringbone support. According to the device, the grooving depth can be adjusted, meanwhile, the labor intensity is greatly relieved, cost and time are saved, and a pond is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of rice field fish farming equipment, in particular to a trenching device used for rice field fish fry cultivation. Background Art

[0002] At present, the cultivation of aquaculture seedlings from the water flower to the summer flower stage is generally carried out in a pond or facility cultivation equipment, because the initial stage of seedling cultivation has a higher demand for water quality and nutrition, and a large amount of bait with high nutritional value needs to be fed in the cultivation process of seedlings, and the ingestion rate and digestion and absorption of feed in the seedling stage of fish are all less than that of adult fish, often causing the rapid eutrophication of the water in a short period of time, and the fry are prone to disease and death, and now a large amount of water changes or water quality improvements are needed. In addition, the method of fertilization cultivates zooplankton as seedling bait, which has a more serious impact on the eutrophication of water quality, increases the burden of tailwater treatment and the pressure of efflux. These cultivation methods all take up a large amount of aquaculture facilities and pond areas, and the method of utilizing rice field culture to cultivate fry can effectively solve the above problems.

[0003] At present, rice field farming generally requires digging fish ditches in rice fields. Digging fish ditches relies on manual labor, which is labor-intensive, time-consuming and costly. In addition, the traditional trenching plow has a conical structure, and the trench is an inverted triangle structure that is wide at the top and narrow at the bottom. This type of trench has a small activity space, and the seedlings are mostly concentrated at the bottom of the trench with a high density, which is not conducive to seedling growth. In addition, the depth of the trench cannot be well controlled, which easily makes it difficult for the fry to migrate. Utility Model Content

[0004] In order to solve the defects and shortcomings of the existing technology, the purpose of the utility model is to provide a ditching device for cultivating fish fry in rice fields with a simple structure, reasonable design and easy use. It makes targeted improvements to the traditional plow structure and adds a front guide structure, which can adjust the depth of the grooving; at the same time, with the help of mechanical traction, it greatly reduces labor intensity, saves cost and time, saves ponds, and is conducive to the rapid swimming of fish fry in rice fields, secondary ditches and main ditches, so that they are not trapped in rice fields due to obstructions.

[0005] In order to achieve the above purpose, the technical solution adopted by the utility model is:

[0006] A furrowing device for cultivating fish fry in rice fields comprises a bottom plow blade, a mud-turning blade, a screw, a tillage depth blade, a sheet-shaped rod, a sheet-shaped rod two, a lever arm, a handle, a sleeve, an A-shaped bracket, and a guide rocker; the top of the bottom plow blade is connected to a mud-turning blade with an arc structure, and the middle of the tail of the bottom plow blade is vertically connected to a screw, and an adjustable tillage depth blade is connected to the screw; the tail end and the front of the left edge of the bottom plow blade are respectively connected to the sheet-shaped rod one and the sheet-shaped rod two, and a lever arm is connected between the sheet-shaped rod one and the sheet-shaped rod two, the lever arm is in an inclined state, and the height of the front end of the lever arm is greater than the height of the rear end thereof, the top end of the lever arm is sleeved with a sleeve, the middle limit of the lever arm is sleeved with a sleeve, and the lower end of the sleeve is connected to the guide rocker through the A-shaped bracket.

[0007] Preferably, the bottom plow blade is a quadrilateral structure with a beveled cut at the front end. The angle between the beveled cut and the left edge of the bottom plow blade is acute, and an arc-shaped connecting groove is provided behind the beveled cut, with the ends of the connecting groove aligned with the ends of the beveled cut. Preferably, the front end of the mud turning blade is a twisted arc, which is welded to the connecting groove, and the rear end of the mud turning blade is a vertical edge structure that is perpendicular to the bottom plow blade.

[0008] Preferably, the sleeve slides up and down along the lever arm and is fixed in conjunction with a plug pin, thereby changing the height of the guide rocker from the ground.

[0009] Preferably, the front end of the guide rocker is an upward arc-shaped structure.

[0010] After adopting the above structure, the beneficial effects of the utility model are:

[0011] This device improves the traditional plow structure based on the characteristics of rice fields and adds a front guide structure. It can adjust the depth of the groove to avoid uneven force causing the front end of the bottom plow blade to embed too deep, and the bottom plow blade can also level the bottom of the groove; at the same time, it greatly reduces labor intensity, saves cost and time, saves ponds, and is conducive to the rapid swimming of fish fry in rice fields, secondary ditches and main ditches, without being trapped in rice fields due to obstructions. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the present invention is described in detail through the following specific implementations and drawings.

[0013] Figure 1 It is a structural diagram of the utility model;

[0014] Figure 2 This is a schematic diagram of the connection of the bottom plow blade 1 of the present invention;

[0015] Figure 3 This is a schematic structural diagram of the guide rocker 11 of the present invention;

[0016] Figure 4This is a schematic structural diagram of the bottom plow blade 1 of the present utility model;

[0017] Figure 5 This is a schematic structural diagram of the mud turning piece 2 of the present utility model;

[0018] Explanation of the accompanying reference numerals: bottom plow blade 1, mud-turning blade 2, screw 3, tillage depth blade 4, lamellar rod 1 5, lamellar rod 2 6, lever arm 7, handle 8, sleeve 9, herringbone bracket 10, guide rocker 11, connecting pin 12, bevel cut 13, connecting groove 14, horizontal arc 21, vertical edge 22. DETAILED DESCRIPTION

[0019] To make the objectives, technical solutions, and advantages of the present invention more clearly apparent, the present invention is described below using specific embodiments illustrated in the accompanying drawings. However, it should be understood that these descriptions are merely illustrative and are not intended to limit the scope of the present invention. Furthermore, descriptions of known structures and technologies are omitted in the following description to avoid unnecessary confusion regarding the concepts of the present invention.

[0020] It should also be noted here that, in order to avoid obscuring the present invention due to unnecessary details, only structures and / or processing steps closely related to the solution according to the present invention are shown in the accompanying drawings, while other details that are not closely related to the present invention are omitted.

[0021] See Figure 1-Figure 5 As shown, the furrowing device for cultivating fry in rice fields of this embodiment includes a bottom plow blade 1, a mud-turning blade 2, a screw 3, a tillage blade 4, a sheet rod 1 5, a sheet rod 2 6, a lever arm 7, a handle 8, a sleeve 9, a herringbone bracket 10, and a guide rocker 11. The bottom plow blade 1 is a quadrilateral structure with an oblique cut 13 at the front end, and the angle between the oblique cut 13 and the left edge of the bottom plow blade 1 is an acute angle. An arc-shaped connecting groove 14 is provided behind the oblique cut 13, and the two ends of the connecting groove 14 are aligned with the two ends of the oblique cut 13. The front end of the mud-turning blade 2 is a twisted arc 21, and the twisted arc 21 is welded to the connecting groove 14. The rear end of the mud-turning blade 2 is a vertical edge 22 structure that remains perpendicular to the bottom plow blade 1.

[0022] A screw rod 3 is vertically connected to the middle of the tail of the bottom plow blade 1, and an adjustable plowing depth piece 4 is connected to the screw rod 3 by a fastening nut. The plowing depth piece 4 serves as a detection tool for the furrowing depth. By observing the height difference between the plowing depth piece 4 and the edge of the furrow or the water surface in real time, timely adjustments are made to ensure the consistency of the furrowing depth. Furthermore, a sheet rod 1 5 and a sheet rod 2 6 are welded to the tail end and the front of the left edge of the bottom plow blade 1, respectively. The height of the sheet rod 2 6 is higher than the sheet rod 1 5. A height difference is maintained between the sheet rod 1 5 and the sheet rod 2 6, so that the lever arm 7 connected between the sheet rod 1 5 and the sheet rod 2 6 remains in an inclined state. The sheet rod 1 5 is hinged to the tail end of the lever arm 7, and the sheet rod 2 6 is provided with an adjustment hole slot, which cooperates with the plug-in fixing pin to adjust the inclination angle of the lever arm 7.

[0023] Furthermore, a sleeve 9 is positioned in the middle of the lever arm 7, and a guide plate 11 is connected to the lower end of the sleeve 9 via a herringbone bracket 10. The sleeve 9 slides up and down along the lever arm 7 and is secured with a latch pin 12, thereby adjusting the height of the guide plate 11 above the ground. The front end of the guide plate 11 is an upward-curved arc-shaped structure, and its width is 2-3 times the width of the trench. The guide plate 11 can slide forward closely against the ground and also serves to level the ground before trenching.

[0024] The front end of the lever arm 7 is sleeved with a handle 8 through a sleeve 9. The handle 8 can be connected to a mechanical device by means of a buckle for mechanical traction, or can be pulled manually to open a trench.

[0025] Application and principle of the above-mentioned ditching device for cultivating fish fry in rice fields:

[0026] Rice field renovation: A main ditch is dug on one side of the rice field, and several secondary ditches are dug along the main ditch into the rice field. With an average row spacing of 25 cm, the main ditch is 30 cm deep and approximately 75 cm wide, while the secondary ditches are 10 cm deep and 50 cm wide. During high-water season, fish fry can swim within the rice field, but when the water level drops, they can retreat into the main ditch. After the rice seedlings are planted, the removed seedlings are placed in the rice field on the side of the ditch. Ensure that the water flow between the rice field and the ditch is connected to ensure smooth swimming for the fish fry. The rice field ditching device described above is used.

[0027] Operation of the trenching device: The handle 8 is connected to the rear of the mechanical device via a hook anchor or chain, and is mechanically pulled forward to open the trench. Before trenching, the height of the tillage blade 4 and the guide rocker 11 must be manually adjusted according to the required trenching depth. The tillage blade 4 serves as a trenching depth detector. The height between the tillage blade 4 and the trench edge or water surface is observed to determine whether the trench depth meets the standard, facilitating timely adjustment. The guide rocker 11 acts as a limiter for the bottom plow blade 1 to penetrate the ground. During the trenching process, the guide rocker 11 slides forward close to the ground to prevent the bottom plow blade 1 from embedding too deeply into the ground, which increases the difficulty of trenching.

[0028] Stocking of seedlings: The stocking amount of seedlings is based on one-fourth of the pond, and 50,000 grass carp are stocked per mu; after stocking, the depth of the field water is maintained at about 10 cm; feed is fed in the main ditch.

[0029] Fertilization and feeding: The fish are raised with water splash fish. Fermented organic fertilizer is applied as topdressing and sprinkled all over the fish. Soy milk is sprinkled on the fish three days before stocking, once a day. Artificial feed is fed later.

[0030] Fish fry harvesting and subsequent rice field management: After about a month of rearing, the water flounder reaches approximately five centimeters in length and can be harvested for sale or raised as larger fingerlings. The fry survival rate reaches 96%, with no disease or weeds occurring during this period. During rice harvesting, the location, depth, and width of the main and secondary furrows do not affect mechanized harvesting.

Claims

1. A trenching device for cultivating fish fry in rice fields, characterized by: It comprises a bottom plow blade, a mud-turning blade, a screw, a tillage depth blade, a sheet-shaped rod, a sheet-shaped rod two, a lever arm, a handle, a sleeve, an A-shaped bracket, and a guide rocker; the upper portion of the bottom plow blade is connected with a mud-turning blade having an arc-shaped structure, and the middle portion of the tail portion of the bottom plow blade is vertically connected with a screw, and an adjustable tillage depth blade is connected with the screw; the tail end and the front portion of the left edge of the bottom plow blade are respectively connected with a sheet-shaped rod one and a sheet-shaped rod two, and a lever arm is connected between the sheet-shaped rod one and the sheet-shaped rod two, the lever arm is in an inclined state, and the height of the front end of the lever arm is greater than the height of the rear end thereof, the top end of the lever arm is sleeved with a sleeve, the middle limit portion of the lever arm is sleeved with a sleeve, and the lower end of the sleeve is connected with a guide rocker through the A-shaped bracket.

2. A furrowing device for cultivating fry in rice fields according to claim 1, characterized in that: The bottom plow blade is a quadrilateral structure with an oblique cut at the front end. The angle between the oblique cut and the left edge of the bottom plow blade is an acute angle, and an arc-shaped connecting groove is provided behind the oblique cut, with both ends of the connecting groove aligned with both ends of the oblique cut.

3. A furrowing device for cultivating fish fry in rice fields according to claim 1, characterized in that: The front end of the mud turning piece is a twisted arc, which is welded to the connecting groove, and the rear end of the mud turning piece is a vertical edge structure that is perpendicular to the bottom plow piece.

4. A furrowing device for cultivating fry in rice fields according to claim 1, characterized in that: The sleeve slides up and down along the lever arm and is fixed in conjunction with the plug pin, thereby changing the height of the guide rocker from the ground.

5. A furrowing device for cultivating fry in rice fields according to claim 4, characterized in that: The front end of the guide rocker is an upward arc-shaped structure.

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