Device for in-situ grading screening of loaches with different sizes and specifications

Abstract

The utility model discloses a device for on-site grading screening of loaches with different sizes and specifications, which comprises a connecting device (2), an opening (1) and an outlet (7) are respectively arranged at two ends of the connecting device (2), and at least one filter sieve is detachably connected in the connecting device (2). Wherein the minimum passing diameter of the filter sieve close to the opening (1) is larger than that of the filter sieve close to the outlet (7). The device is small in size and convenient to carry, an external power source is not needed, loaches caught in the rice field can be collected in a classified mode on site, and the loaches intercepted by the filter sieve and the loaches which cannot be intercepted by the filter sieve can be collected by adjusting the minimum passing diameter of the filter sieve so that the loaches of different sizes and specifications can be obtained.

Description

Technical Field

[0001] The utility model relates to the technical field of loach grading and screening devices, in particular to a device for grading and screening loaches of different sizes on site. Background Art

[0002] Loach is a well-known freshwater aquaculture species. It has strong vitality, reproduces quickly and eats a variety of baits. It is an easy-to-raise and high-yield fish. Raising loach in rice fields is a sustainable ecological cycle agricultural model that achieves double harvests of fish and grain, reduces fat and increases efficiency.

[0003] Since loaches reproduce while growing in rice fields, the loaches obtained when harvested are usually of different sizes. The loaches need to be graded and screened a second time so that loaches of different sizes can be classified according to market sales standards. At the same time, loaches that do not meet the market standards at all (i.e., are too small) will continue to be cultivated in the fields.

[0004] At present, loaches are often caught by netting or cage catching. During the catching process, loach seedlings and loaches that are too small will be caught at the same time. The existing loach grading devices are generally large in size and not easy to carry, and most of the grading devices need to be connected to an external power supply to achieve the purpose of grading. This also makes it impossible to grade the loaches directly at the fishing site, and then the loaches die during the transportation and grading process after fishing.

[0005] Therefore, there is a need for a device that is small in size, easy to carry, and can achieve on-site classification and screening of loaches. Utility Model Content

[0006] The purpose of the utility model is to overcome the above-mentioned shortcomings of the prior art and provide a device for on-site classification and screening of loaches of different sizes.

[0007] In order to achieve the above purpose, the utility model is implemented by the following scheme:

[0008] A device for on-site classification and screening of loaches of different sizes and specifications, comprising a connecting device (2) with an opening (1) and an outlet (7) respectively arranged at two ends, wherein at least one filter screen is detachably connected to the connecting device (2); wherein the minimum passing distance of the filter screen close to the opening (1) is greater than the minimum passing distance of the filter screen close to the outlet (7).

[0009] Preferably, the opening (1) is a retractable structure.

[0010] More preferably, the edge of the opening (1) is an elastic rope, and the contraction of the opening (1) is controlled by the elastic rope.

[0011] Preferably, a first filter screen (3) close to the opening (1) and a second filter screen (5) close to the outlet (7) are detachably connected to the connecting device (2).

[0012] More preferably, the first filter screen (3) is detachably connected to the connecting device (2) via a first fixing ring (8), and the second filter screen (5) is detachably connected to the connecting device (2) via a second fixing ring (9).

[0013] Further preferably, the diameter of the first fixing ring (8) is the same as the diameter of the first filter screen (3), and the diameter of the second fixing ring (9) is the same as the diameter of the second filter screen (3).

[0014] More preferably, the connecting device (2) is further provided with a first pouring port (4) and a second pouring port (6);

[0015] The first pouring port (4) is arranged between the opening (1) and the first filter screen (3), and the second pouring port (6) is arranged between the first filter screen (3) and the second filter screen (5).

[0016] Further preferably, the first pouring port (4) is arranged at the connection between the first filter screen (3) and the connecting device (2), and the second pouring port (6) is arranged at the connection between the second filter screen (5) and the connecting device (2).

[0017] More preferably, the opening (7), the first pouring spout (4) and / or the second pouring spout (6) are opened and closed by a zipper.

[0018] The zipper is a toothless zipper with a length of 15 to 18 cm; the first filter screen (3) and the second filter screen (5) are filter screens with smooth edges.

[0019] Preferably, holes with a diameter of 2 to 3 mm are evenly distributed on the connecting device (2).

[0020] More preferably, the material of the connecting device (2) is nylon fiber.

[0021] Preferably, the minimum passing distance of the first filter screen (3) is 13-16 mm.

[0022] More preferably, the minimum passing distance of the first filter screen (3) is 13 mm.

[0023] Preferably, the minimum passing distance of the second filter screen (5) is 5 to 8 mm.

[0024] More preferably, the minimum passing distance of the second filter screen (5) is 6 mm.

[0025] The minimum passing distance is the minimum diameter of an object (loach) that can pass through the filter screen.

[0026] More preferably, the spacing between adjacent filter holes arranged on the first filter screen (3) is 5 mm, and the spacing between adjacent filter holes arranged on the second filter screen (5) is 5 mm.

[0027] Preferably, the first filter screen (3) and / or the second filter screen (5) is a filter screen with a curved surface, and the convex surface of the filter screen is close to the outlet (7).

[0028] More preferably, the curved surface is hemispherical.

[0029] More preferably, the diameter of the first filter screen (3) is 35 to 45 cm, and the diameter of the second filter screen (5) is smaller than the diameter of the first filter screen (3).

[0030] Further preferably, the diameter of the first filter screen (3) is 35 cm, and the diameter of the second filter screen (5) is 30 cm.

[0031] The utility model also provides a method for using the above device, specifically:

[0032] Loaches caught from rice fields are added into any of the above-mentioned devices through the opening (1), and loaches of different sizes are intercepted by utilizing the characteristics of loaches that they like to dig holes and easily secrete mucus, combined with the filter screen in the device; loaches that cannot be intercepted by the filter screen are collected from the outlet (7), and loaches intercepted on the filter screen are collected.

[0033] Compared with the prior art, the utility model has the following beneficial effects:

[0034] The utility model provides a device for on-site classification and screening of loaches of different sizes, comprising a connecting device (2) with an opening (1) and an outlet (7) respectively arranged at two ends, wherein at least one filter screen is detachably connected to the connecting device (2); wherein the minimum passing distance of the filter screen close to the opening (1) is greater than the minimum passing distance of the filter screen close to the outlet (7). The device is small in size, easy to carry, and does not require an external power supply. It can collect loaches caught in rice fields on-site by classification. By adjusting the minimum passing distance of the filter screen, loaches intercepted by the filter screen and loaches that cannot be intercepted by the filter screen can be collected separately, thereby obtaining loaches of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] Figure 1 A three-dimensional diagram of an embodiment of the utility model;

[0036] Figure 2 for Figure 1An enlarged view of the first filter screen 3;

[0037] Marks and corresponding parts names in the attached drawings:

[0038] 1-opening; 2-connecting device; 3-first filter screen; 4-first pouring port; 5-second filter screen; 6-second pouring port; 7-outlet; 8-first fixing ring; 9-second fixing ring. DETAILED DESCRIPTION

[0039] The present invention is further described in detail below in conjunction with the accompanying drawings and specific examples of the specification. The examples are only used to explain the present invention and are not used to limit the scope of the present invention. The test methods used in the following examples are conventional methods unless otherwise specified; the materials and reagents used are reagents and materials that can be obtained from commercial channels unless otherwise specified.

[0040] It should be noted that the terms "first", "second", etc. in the specification, claims and the above drawings of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate to describe the embodiments of the utility model.

[0041] In the present application, terms such as "upper", "lower", "left", "right", "front", "back", "top", "bottom", "inside", "outside", "middle", "vertical", "horizontal", "lateral" and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are not used to limit the indicated devices, elements or components to have a specific orientation, or to be constructed and operated in a specific orientation.

[0042] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application may be combined with each other.

[0043] Embodiment 1 A device for on-site classification and screening of loaches of different sizes

[0044] 1. A device for on-site classification and screening of loaches of different sizes

[0045] Reference Figure 1 , a device for on-site classification and screening of loaches of different sizes, comprising an opening 1, a connecting device 2 and an outlet 7, wherein a first filter screen 3 close to the opening 1 and a second filter screen 5 close to the outlet 7 are arranged in the connecting device 2;

[0046] The first filter screen 3 is detachably connected to the connecting device 2 via a first fixing ring 8, and the second filter screen 5 is detachably connected to the connecting device 2 via a second fixing ring 9;

[0047] The first filter screen 3 and the second filter screen 5 are provided with strip filter holes of different specifications. The width of the strip filter holes provided on the first filter screen 3 is 13 mm, which is longer than the width. The minimum passing distance of the first filter screen 3 is 13 mm, and the spacing between adjacent strip filter holes provided on the first filter screen 3 is 5 mm; the width of the strip filter holes provided on the second filter screen 5 is 6 mm, which is longer than the width. The minimum passing distance of the second filter screen 5 is 6 mm, and the spacing between adjacent strip filter holes provided on the second filter screen 5 is 5 mm.

[0048] The first filter screen 3 and the second filter screen 5 are both hemispherical filter screens with smooth edges. The diameters of the first filter screen 3 and the first fixing ring 8 are 35 cm, and the diameters of the second filter screen 5 and the second fixing ring 9 are 30 cm. The convex surfaces of the first filter screen 3 and the second filter screen 5 are both close to the outlet 7. The connecting device 2 is made of nylon fiber, and meshes with a diameter of 2 mm are evenly distributed on the connecting device 2. The edge of the opening 1 is an elastic rope, and the contraction of the opening 1 is controlled by the elastic rope.

[0049] 2. Usage

[0050] The device for on-site classification and screening of loaches of different sizes shown in step 1 can be used to classify and screen loaches caught in rice fields on-site, as follows:

[0051] Carry the device for on-site grading and screening of loaches shown in step 1 to the vicinity of the rice field where loaches are caught, control the size of the opening 1 by an elastic rope, add 300 to 400 loaches caught from the rice field into the above-shown device from the outlet 1, tighten the opening 1, and shake the device up and down. By utilizing the characteristics of loaches that they like to drill holes and easily secrete mucus, loaches of different sizes can be retained by the first filter screen 3 and the second filter screen 5.

[0052] The loaches intercepted by the first filter screen 3 are large loaches that best meet the listing standards (>10g, body width>13mm), the loaches intercepted by the second filter screen 5 are loaches that meet the medium listing standards (4~10g, body width 6~13mm), and the loaches that cannot be intercepted by the first filter screen 3 and the second filter screen 5 are small loaches (<4g, body width less than 6mm).

[0053] Use bucket 1 to collect loaches that cannot be retained by the first filter screen 3 and the second filter screen 5 from outlet 7, and use bucket 2 and bucket 3 to collect loaches retained by the first filter screen 3 and the second filter screen 5 respectively, thereby realizing the grading and screening of the captured loaches; the loaches collected from outlet 7 that cannot be retained by the first filter screen 3 and the second filter screen 5 are put into rice fields for continued breeding or are temporarily raised on site in ditches until the rice turns green and are then put into rice fields for breeding again.

[0054] Embodiment 2 A device for on-site classification and screening of loaches of different sizes

[0055] 1. A device for on-site classification and screening of loaches of different sizes

[0056] Reference Figure 1 A device for on-site grading and screening of loaches of different sizes and specifications, comprising an opening 1, a connecting device 2 and an outlet 7, wherein a first filter screen 3 close to the opening 1 and a second filter screen 5 close to the outlet 7 are arranged in the connecting device 2; a first pouring port 4 and a second pouring port 6 are also arranged on the connecting device 2.

[0057] The first filter screen 3 is detachably connected to the connecting device 2 via a first fixing ring 8, and the second filter screen 5 is detachably connected to the connecting device 2 via a second fixing ring 9;

[0058] The first filter screen 3 and the second filter screen 5 are provided with strip filter holes of different specifications. The width of the strip filter holes provided on the first filter screen 3 is 13 mm, which is longer than the width. The minimum passing distance of the first filter screen 3 is 13 mm, and the spacing between adjacent strip filter holes provided on the first filter screen 3 is 5 mm; the width of the strip filter holes provided on the second filter screen 5 is 6 mm, which is longer than the width. The minimum passing distance of the second filter screen 5 is 6 mm, and the spacing between adjacent strip filter holes provided on the second filter screen 5 is 5 mm.

[0059] The first filter screen 3 and the second filter screen 5 are both hemispherical filter screens with smooth edges. The diameter of the first filter screen 3 and the first fixing ring 8 is 35 cm, the diameter of the second filter screen 5 and the second fixing ring 9 is 30 cm, and the convex surfaces of the first filter screen 3 and the second filter screen 5 are close to the outlet 7; the first pouring port 4 is arranged at the connection between the first filter screen 3 and the connecting device 2, the second pouring port 6 is arranged at the connection between the second filter screen 5 and the connecting device 2, and the circumference of the first pouring port 4 and the second pouring port 6 is 36 cm.

[0060] The material of the connecting device 2 is nylon fiber, and meshes with a diameter of 2 mm are evenly distributed on the connecting device 2; the edge of the opening 1 is an elastic rope, and the contraction of the opening 1 is controlled by the elastic rope.

[0061] 2. Usage

[0062] The device for on-site classification and screening of loaches of different sizes shown in step 1 can be used to classify and screen loaches caught in rice fields on-site, as follows:

[0063] Carry the device for on-site grading and screening of loaches of different sizes shown in step 1 to the vicinity of the rice field where loaches are caught, control the size of the opening 1 by an elastic rope, add 300 to 400 loaches caught from the rice field into the above device through the outlet 1, tighten the opening 1, and shake the device up and down. By utilizing the characteristics of loaches that they like to drill holes and easily secrete mucus, loaches of different sizes can be retained by the first filter screen 3 and the second filter screen 5.

[0064] The loaches intercepted by the first filter screen 3 are large loaches that best meet the listing standards (>10g, body width>13mm), the loaches intercepted by the second filter screen 5 are loaches that meet the medium listing standards (4~10g, body width 6~13mm), and the loaches that cannot be intercepted by the first filter screen 3 and the second filter screen 5 are small loaches (<4g, body width less than 6mm).

[0065] Use a bucket to collect the loaches that cannot be retained by the first filter screen 3 and the second filter screen 5 from the outlet 7, pour the loaches retained by the first filter screen 3 into the bucket 2 from the first pouring port 4, and pour the loaches retained by the second filter screen 5 into the bucket 3 from the second pouring port 6, thereby realizing the grading and screening of the captured loaches; the loaches collected from the outlet 7 that cannot be retained by the first filter screen 3 and the second filter screen 5 are put into the rice fields for continued breeding or are temporarily raised on site in the ditches until the rice turns green and then put into the rice fields for breeding again.

[0066] Embodiment 3 A device for on-site classification and screening of loaches of different sizes

[0067] 1…A device for on-site classification and screening of loaches of different sizes

[0068] Reference Figure 1 , a device for on-site classification and screening of loaches of different sizes, comprising an opening 1, a connecting device 2 and an outlet 7, wherein the connecting device 2 is provided with a first filter screen 3 near the opening 1 and a second filter screen 5 near the outlet 7; the connecting device 2 is also provided with a first pouring port 4 and a second pouring port 6; wherein an enlarged view of the first filter screen 3 is as shown Figure 2 shown.

[0069] The first filter screen 3 is detachably connected to the connecting device 2 via a first fixing ring 8, and the second filter screen 5 is detachably connected to the connecting device 2 via a second fixing ring 9;

[0070] The first filter screen 3 and the second filter screen 5 are provided with strip filter holes of different specifications. The width of the strip filter holes provided on the first filter screen 3 is 13 mm, which is longer than the width. The minimum passing distance of the first filter screen 3 is 13 mm, and the spacing between adjacent strip filter holes provided on the first filter screen 3 is 5 mm; the width of the strip filter holes provided on the second filter screen 5 is 6 mm, which is longer than the width. The minimum passing distance of the second filter screen 5 is 6 mm, and the spacing between adjacent strip filter holes provided on the second filter screen 5 is 5 mm.

[0071] The first filter screen 3 and the second filter screen 5 are both hemispherical filter screens with smooth edges. The diameters of the first filter screen 3 and the first fixing ring 8 are 35 cm, and the diameters of the second filter screen 5 and the second fixing ring 9 are 30 cm. The convex surfaces of the first filter screen 3 and the second filter screen 5 are both close to the outlet 7; the first pouring port 4 is arranged at the connection between the first filter screen 3 and the connecting device 2, and the second pouring port 6 is arranged at the connection between the second filter screen 5 and the connecting device 2, and the circumference of the first pouring port 4 and the second pouring port 6 is 36 cm; the opening 7, the first pouring port 4 and the second pouring port 6 are respectively opened and closed by a toothless zipper, and the length of the zipper is 18 cm.

[0072] The material of the connecting device 2 is nylon fiber, and meshes with a diameter of 2 mm are evenly distributed on the connecting device 2; the edge of the opening 1 is an elastic rope, and the contraction of the opening 1 is controlled by the elastic rope.

[0073] 2. Usage

[0074] Method of use 1: The device for on-site classification and screening of loaches of different sizes as shown in step 1 can be used to classify and screen loaches caught in rice fields on-site. The screening criteria are large loaches (>10g, body width>13mm) that best meet the market standards, loaches of medium market standards (4-10g, body width 6-13mm) and small loaches (<4g, body width less than 6mm), specifically as follows:

[0075] The device for on-site grading and screening of loaches of different sizes shown in step 1 is carried to the vicinity of the rice field where the loaches are caught. Before grading the caught loaches, the first pouring port 4, the second pouring port 6 and the opening 7 are controlled by a zipper to remain closed.

[0076] The size of the opening 1 is controlled by an elastic rope, and 300 to 400 loaches caught from the rice field are added to the above device from the outlet 1. The opening 1 is tightened, and the device is shaken up and down. By utilizing the characteristics of loaches that they like to drill holes and easily secrete mucus, loaches of different sizes can be retained by the first filter screen 3 and the second filter screen 5.

[0077] The loaches intercepted by the first filter screen 3 are large loaches that best meet the listing standards (>10g, body width>13mm), the loaches intercepted by the second filter screen 5 are loaches that meet the medium listing standards (4~10g, body width 6~13mm), and the loaches that cannot be intercepted by the first filter screen 3 and the second filter screen 5 are small loaches (<4g, body width less than 6mm).

[0078] Open the opening 7 through the zipper, and use a bucket to collect the loaches that cannot be retained by the first filter screen 3 and the second filter screen 5 from the outlet 7; open the first pouring port 4 through the zipper, and pour the loaches retained by the first filter screen 3 from the first pouring port 4 into the bucket 2; open the second pouring port 6 through the zipper, and pour the loaches retained by the second filter screen 5 from the second pouring port 6 into the bucket 3, thereby realizing the grading and screening of the captured loaches; the loaches collected from the outlet 7 that cannot be retained by the first filter screen 3 and the second filter screen 5 are put into the rice fields for continued breeding or are temporarily raised on site in the ditch until the rice turns green and are then put into the rice fields for breeding again.

[0079] Usage method 2: The device for on-site classification and screening of loaches of different sizes as shown in step 1 can be used to classify and screen loaches caught in rice fields on-site. The screening criteria are large loaches (>8g, body width>11mm), loaches (4-8g, body width 6-11mm) and small loaches (<4g, body width less than 6mm), specifically as follows:

[0080] By removing the first fixing ring 8, the first filter screen 3 is replaced with a new filter screen (with a diameter of 35 cm, provided with strip-type filter holes with a width of 11 mm, longer than wide, and a minimum passing distance of 11 mm), and the new filter screen is fixed to the first filter screen of the device for on-site grading and screening loaches of different sizes shown in step 1 using the first fixing ring 8; the first pouring port 4, the second pouring port 6 and the opening 7 are kept closed by controlling the zipper.

[0081] The size of the opening 1 is controlled by an elastic rope, and 300 to 400 loaches caught from the rice fields are added to the above device from the outlet 1. The opening 1 is tightened, and the device is shaken up and down. By utilizing the characteristics of loaches that they like to drill holes and easily secrete mucus, loaches of different sizes can be retained by the new filter screen and the second filter screen 5.

[0082] The loaches retained by the new filter screen are large loaches (>8g, body width>11mm), the loaches retained by the second filter screen 5 are loaches (4~8g, body width 6~11mm), and the loaches that cannot be retained by the new filter screen and the second filter screen 5 are small loaches (<4g, body width less than 6mm).

[0083] Open the opening 7 through the zipper, and use a bucket to collect the loaches that cannot be retained by the new filter screen and the second filter screen 5 from the outlet 7; open the first pouring port 4 through the zipper, and pour the loaches retained by the new filter screen from the first pouring port 4 into the bucket 2; open the second pouring port 6 through the zipper, and pour the loaches retained by the second filter screen 5 from the second pouring port 6 into the bucket 3, thereby realizing the grading and screening of the captured loaches; the loaches collected from the outlet 7 that cannot be retained by the new filter screen and the second filter screen 5 are put into the rice fields for continued breeding or are temporarily raised on site in the ditches until the rice turns green and then are put into the rice fields for breeding again.

[0084] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model and are not intended to limit the scope of protection of the utility model. For ordinary technicians in this field, other different forms of changes or modifications can be made based on the above descriptions and ideas. It is not necessary and impossible to list all implementation methods here. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the scope of protection of the claims of the utility model.

Claims

1. A device for on-site classification and screening of loaches of different sizes, characterized in that: The invention comprises a connecting device (2) having an opening (1) and an outlet (7) at both ends, wherein at least one filter screen is detachably connected to the connecting device (2); wherein the minimum passing distance of the filter screen close to the opening (1) is greater than the minimum passing distance of the filter screen close to the outlet (7).

2. The device according to claim 1, characterized in that The connecting device (2) is detachably connected with a first filter screen (3) close to the opening (1) and a second filter screen (5) close to the outlet (7).

3. The device according to claim 2, characterized in that The connecting device (2) is also provided with a first pouring port (4) and a second pouring port (6); The first pouring port (4) is arranged between the opening (1) and the first filter screen (3), and the second pouring port (6) is arranged between the first filter screen (3) and the second filter screen (5).

4. The device according to claim 3, characterized in that The outlet (7), the first pouring opening (4) and / or the second pouring opening (6) are opened and closed by a zipper.

5. The device according to claim 1, characterized in that The connecting device (2) is evenly distributed with holes having a diameter of 2 to 3 mm.

6. The device according to claim 5, characterized in that The material of the connecting device (2) is nylon fiber.

7. The device according to claim 2, characterized in that The minimum passing distance of the first filter screen (3) is 13-16 mm.

8. The device according to claim 2, characterized in that The minimum passing distance of the second filter screen (5) is 5 to 8 mm.

9. The device according to claim 2, characterized in that The first filter screen (3) and / or the second filter screen (5) are filter screens with curved surfaces, and the convex surface of the filter screen is close to the outlet (7).

10. The device according to claim 9, characterized in that The diameter of the first filter screen (3) is 35 to 45 cm, and the diameter of the second filter screen (5) is smaller than the diameter of the first filter screen (3).

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