Auxiliary device for separating pine wood nematodes at port

Abstract

The utility model discloses an auxiliary device for separating bursaphelenchus xylophilus at a port, which is characterized in that a supporting filter screen is arranged in a separating cylinder, and a filter screen is laid on the supporting filter screen; the pressing pipe is inserted into the separation cylinder, and a permeable filter screen is arranged at the lower end of the pressing pipe; the inlet of the valve body is connected with the lower end of the separation cylinder; the solution bottle can be arranged below the valve body, and the open end of the solution bottle can be aligned with the outlet of the valve body. According to the utility model, the supporting filter screen is horizontally fixed in the separation cylinder, so that the supporting filter screen can support the filter screen; the filter screen can intercept and filter the wood blocks, so that only pine nematodes can pass through the filter screen, and large-particle-size impurities in the wood blocks are prevented from entering the solution bottle; the downward pressing pipe drives the permeable filter screen to move downwards so as to press the wood blocks into water, and water in the separation barrel cannot overflow in the downward moving process of the downward pressing pipe; in addition, the downward pressing pipe can be arranged in place firstly, then water is added into the separation barrel, and in this way, it is guaranteed that the wood blocks are completely immersed in water, and water can be conveniently added.

Description

Technical Field

[0001] The utility model relates to the field of customs quarantine equipment, and more specifically to an auxiliary device for separating pine wood nematodes at ports. Background Art

[0002] Incoming log products such as Pinus taeda, Pinus elliottii, and Picea asperata are extremely likely to carry pine wood nematodes, posing a potential invasion risk. Since pine wood nematodes are extremely likely to spread with vectors such as Monochamus alternatus, they have strong destructiveness and great harm. Therefore, the port quarantine of pine wood nematodes has always been the key focus of customs inspection and quarantine.

[0003] The inspection department sends suspicious wood samples to the plant quarantine laboratory by sampling; the laboratory needs to separate nematodes from the wood samples and conduct identification. The conventional method is to split the wood samples into small pieces and then place them in a separation container for separation according to the principle of the funnel method; this identification method requires submerging the wood pieces in water to effectively separate the pine nematodes in the wood pieces. However, since wood has buoyancy, it needs to be pressed down to be submerged in water. Since the leaching of pine nematodes takes a long time, manually pressing the wood pieces is time-consuming and laborious. Using heavy objects to press can only submerge part of the wood pieces in water, and the contact position between the wood pieces and the heavy objects cannot be submerged in water either. Even if the wood pieces are completely pressed into water by heavy objects, the water level in the container will rise too high during the pressing process of the heavy objects, and the water is likely to overflow from the funnel. Using the method of first placing heavy objects and then adding water can avoid water overflow, but it will be difficult to add water to the container; in addition to the above, the existing separation equipment has a complex structure and is not easy to clean and maintain later.

[0004] Therefore, how to provide an auxiliary device for separating pine wood nematodes at ports to overcome the above problems is an urgent problem to be solved by those skilled in the art. Content of the Utility Model

[0005] In view of this, the utility model provides an auxiliary device for separating pine wood nematodes at ports.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] An auxiliary device for separating pine wood nematodes at ports, comprising:

[0008] A separation cylinder, the separation cylinder is arranged vertically and has openings at both ends. A support filter screen is horizontally fixed inside the separation cylinder. A filter screen is laid on the upper surface of the support filter screen. The mesh diameter of the filter screen is smaller than the mesh diameter of the support filter screen. Wood pieces from which pine wood nematodes are to be extracted can be placed above the filter screen in the separation cylinder;

[0009] A pressing tube, the pressing tube is vertically arranged and its lower end is slidably inserted into the separation cylinder. A water-permeable filter screen is horizontally fixed at the lower end of the pressing tube, and the lower surface of the water-permeable filter screen can abut against the wood block.

[0010] A valve body, the valve body is installed on the separation cylinder and is located below the support filter screen. The inlet of the valve body is connected to the lower end of the separation cylinder.

[0011] A solution bottle, the solution bottle can be vertically arranged below the valve body, and the outlet of the valve body can be located inside the opening end of the solution bottle.

[0012] Through the above technical solutions, compared with the prior art, the utility model discloses an auxiliary device for separating pine wood nematodes at ports. By horizontally fixing a support filter screen in the separation cylinder, on the one hand, the support filter screen can ensure that pine wood nematodes can reliably pass through, and on the other hand, it can support the filter screen to prevent the filter screen from deforming due to the downward movement of the wood block when the pressing tube presses the wood block, and prevent the filter screen from being damaged; A filter screen is laid flat on the upper surface of the support filter screen. On the one hand, the filter screen can intercept and filter the wood blocks to ensure that only pine nematodes can pass through the filter screen and prevent large-particle impurities in the wood blocks from entering the solution bottle; On the other hand, the filter screen can be taken out of the separation cylinder, which is convenient for cleaning and replacing the filter screen; By designing the valve body, only when the valve body is opened can the liquid in the separation cylinder flow into the solution bottle; By designing the pressing tube and the water-permeable filter screen, the pressing tube drives the water-permeable filter screen to move downward, and the water-permeable filter screen can press the wood block into the water. At the same time, the water in the separation cylinder will pass through the water-permeable filter screen and enter the inner side of the pressing tube, and the water in the separation cylinder will not overflow during the downward movement of the pressing tube; The above method is to add water and place the wood block in the separation cylinder first, and then place the pressing tube; The application can also arrange the pressing tube in place first, and then add water to the separation cylinder. This method can ensure that the wood block is completely immersed in water on the one hand, and on the other hand, when adding water, the water can be directly added to the pressing tube, and the water addition process is also relatively convenient.

[0013] Preferably, the outer contour of the support filter screen is circular, the outer side wall of the support filter screen is tightly fixed to the inner side wall of the separation cylinder, the outer contour of the filter screen is circular, and the outer side wall of the filter screen is closely arranged with the inner side wall of the separation cylinder. The support filter screen can be reliably fixed in the separation cylinder, the filter screen can be reliably arranged in the separation cylinder, and the wood block can be reliably limited inside the outer contour of the support filter screen and inside the outer contour of the filter screen.

[0014] Preferably, it further includes a pressing ring, the pressing ring is horizontally arranged in the separation cylinder, the lower end of the pressing ring is closely attached to the upper surface of the filter screen, and the wood block can be arranged inside the pressing ring. The filter screen can be reliably arranged.

[0015] Preferably, the outer contour of the cross-section of the pressing tube is the same as the inner contour of the cross-section of the separation cylinder, and the outer wall of the pressing tube is in sliding contact with the inner wall of the separation cylinder; an annular counterweight is coaxially fixed to the outer wall of the pressing tube, and the counterweight is arranged near the upper end of the pressing tube. The pressing tube can reliably press the wood block into the water, and the counterweight does not affect the water addition operation into the separation cylinder.

[0016] Preferably, the mesh diameter of the permeable filter screen is smaller than the mesh diameter of the filter screen. The pine wood nematode will not pass through the permeable filter screen and enter the pressing tube.

[0017] Preferably, it further includes a funnel. The funnel is arranged vertically, and its large-diameter end is hermetically fixed and communicated with the lower opening end of the separation cylinder, and the small-diameter end of the funnel is fixed and communicated with the inlet of the valve body. The pine wood nematode can be reliably removed from the valve body.

[0018] Preferably, it further includes a base and columns. The base is arranged horizontally, and a limiting groove with one end open is integrally formed at the upper end thereof. The lower end of the solution bottle can be arranged inside the limiting groove; there are multiple columns, which are evenly arranged along the circumference of the separation cylinder. The columns are arranged vertically, and the lower ends thereof are fixed to the base, and the upper ends of the columns are fixed to the separation cylinder. The separation cylinder can be reliably fixed vertically, and the solution bottle is convenient to be arranged in place. Description of the Drawings

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained according to the provided drawings.

[0020] Figure 1 is an overall axonometric view of an auxiliary device for separating pine wood nematodes at ports;

[0021] Figure 2 is a cross-sectional view of an auxiliary device for separating pine wood nematodes at ports;

[0022] Figure 3 is an exploded axonometric schematic diagram of an auxiliary device for separating pine wood nematodes at ports.

[0023] In the figure:

[0024] 1 is the separation cylinder, 2 is the support filter screen, 3 is the filter screen, 4 is the pressing tube, 5 is the permeable filter screen, 6 is the valve body, 7 is the solution bottle, 8 is the pressing ring, 9 is the counterweight, 10 is the funnel, 11 is the base, 110 is the limiting groove, 12 is the column. Detailed Embodiments

[0025] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0026] The present invention discloses an auxiliary device for separating pine wood nematodes at ports. By horizontally fixing a support filter screen 2 in a separation cylinder 1, on the one hand, the support filter screen 2 can ensure the reliable passage of pine wood nematodes, and on the other hand, it can support the filter screen 3 to prevent the filter screen 3 from deforming due to the downward movement of the wood block when the pressing tube 4 presses down the wood block, thereby preventing the filter screen 3 from being damaged.

[0027] A filter screen 3 is laid flat on the upper surface of the support filter screen 2. On the one hand, the filter screen 3 can intercept and filter the wood blocks to ensure that only pine nematodes can pass through the filter screen 3, avoiding large-particle impurities in the wood blocks from entering the solution bottle 7. On the other hand, the filter screen 3 can be taken out of the separation cylinder 1, which is convenient for cleaning and replacing the filter screen 3.

[0028] A pressing ring 8 is arranged above the filter screen 3 to press it. On the one hand, this design ensures that the filter screen 3 can be stably laid flat on the support filter screen 2, and the pressing ring 8 can press the side edges of the filter screen 3 to prevent the filter screen 3 from being laid in place incorrectly. On the other hand, the design of the pressing ring 8 can ensure that the wood blocks are reliably arranged inside the outer contour of the filter screen 3.

[0029] By designing a valve body 6, only when the valve body 6 is opened can the liquid in the separation cylinder 1 flow into the solution bottle 7.

[0030] By designing a pressing tube 4, a permeable filter screen 5 and a counterweight 9, the pressing tube 4 drives the permeable filter screen 5 to move downward. The permeable filter screen 5 can press the wood block into the water. At the same time, the water in the separation cylinder 1 will pass through the permeable filter screen 5 and enter the inside of the pressing tube 4, and the water in the separation cylinder 1 will not overflow during the downward movement of the pressing tube 4. The above method is to first add water and place the wood block in the separation cylinder 1, and then place the pressing tube 4. The present application can also first arrange the pressing tube 4 in place and then add water to the separation cylinder 1. On the one hand, this ensures that the wood block is completely immersed in the water. On the other hand, when adding water, the water can be directly added to the pressing tube 4, and the water addition process is also relatively convenient in this way, and the counterweight 9 will not affect the water addition to the inside of the pressing tube 4. The counterweight 9 can increase the weight of the pressing tube 4 to ensure that the wood block will not float.

[0031] The base 11 is provided with a limiting groove 110 which can limit the placement position of the solution bottle 7. Only when the outer wall of the solution bottle 7 abuts against one end of the limiting groove 110, the solution bottle 7 is directly opposite to the outlet position of the valve body 6 at this time;

[0032] By designing the funnel 10, the pine wood nematodes passing through the support filter screen 2 can gather at the inlet of the valve body 6. When the valve body 6 is opened, the above-mentioned pine wood nematodes can flow out smoothly from the valve body 6;

[0033] By designing the upright column 12 and the base 11, the separation cylinder 1 can be reliably arranged vertically.

[0034] Embodiment

[0035] See the appendix Figures 1-3 It is a schematic diagram of the overall and partial structures of an embodiment of the present invention. The present invention specifically discloses an auxiliary device for separating pine wood nematodes at ports, and the device includes:

[0036] A separation cylinder 1, the inner and outer contours of the cross-section of the separation cylinder 1 are both circular. The separation cylinder 1 is arranged vertically and both ends are open. A circular support filter screen 2 is horizontally fixed inside the separation cylinder 1. A circular filter screen 3 is laid on the upper surface of the support filter screen 2. The mesh diameter of the filter screen 3 is smaller than the mesh diameter of the support filter screen 2. The hardness of the support filter screen 2 is greater than the hardness of the filter screen 3. The support filter screen 2 can support the filter screen 3. Wood blocks from which pine wood nematodes are to be extracted can be placed above the filter screen 3 inside the separation cylinder 1. Water is contained in the separation cylinder 1, and the wood blocks are immersed in the water. The pine wood nematodes in the wood blocks will come out and pass through the filter screen 3 and the support filter screen 2 in sequence. The mesh diameter of the filter screen 3 should be larger than the maximum outer contour diameter of the pine wood nematode body;

[0037] A pressing tube 4, the inner and outer contours of the cross-section of the pressing tube 4 are both circular. The pressing tube 4 is arranged vertically and its lower end is slidably inserted into the separation cylinder 1. A permeable filter screen 5 is horizontally fixed at the lower end of the pressing tube 4. The lower surface of the permeable filter screen 5 can abut against the wood block. After the wood block is placed in the separation cylinder 1, the wood block will float on the water surface due to buoyancy. The pressing tube 4 can forcibly press the wood block into the water, making the wood block fully contact with the water, so that the pine wood nematodes in the wood block can climb out. Also, because the permeable filter screen 5 is designed, when the pressing tube 4 fully presses the wood block into the water, the water level in the separation cylinder 1 will not rise too high due to the downward movement of the pressing tube 4, the water in the separation cylinder 1 will not overflow, and the wood block can move down to abut against both the filter screen 3 and the permeable filter screen 5 at the same time;

[0038] A valve body 6, the valve body 6 is installed on the separation cylinder 1 and is located below the support filter screen 2. The inlet of the valve body 6 is connected to the lower end of the separation cylinder 1. When the valve body 6 is opened, the water in the separation cylinder 1 will flow downward from the outlet of the valve body 6. When the valve body 6 is closed, the water in the separation cylinder 1 will not leak out;

[0039] A solution bottle 7 can be vertically arranged below the valve body 6. The outlet of the valve body 6 can be located inside the opening end of the solution bottle 7. After the valve body 6 is opened, the liquid flowing out from the outlet of the valve body 6 will enter the solution bottle 7. The outer side wall of the solution bottle 7 is provided with scale lines arranged along its height direction, so that the liquid inlet capacity of the solution bottle 7 can be known in time.

[0040] The outer contour of the support filter screen 2 is circular. The outer side wall of the support filter screen 2 is tightly fixed to the inner side wall of the separation cylinder 1. The outer contour of the filter screen 3 is circular. The outer side wall of the filter screen 3 is closely arranged with the inner side wall of the separation cylinder 1. The pine wood nematodes coming out of the wood block must pass through the filter screen 3 and the support filter screen 2 in sequence before they can be removed from the valve body 6.

[0041] More specifically, it further includes a pressing ring 8. The pressing ring 8 is horizontally arranged inside the separation cylinder 1. The lower end of the pressing ring 8 is in close contact with the upper surface of the filter screen 3. The wood block can be arranged inside the pressing ring 8. The pressing ring 8 can press the side edge of the filter screen 3 to ensure that the filter screen 3 can be reliably laid flat on the support filter screen 2.

[0042] The outer contour of the cross-section of the pressing tube 4 is the same as the inner contour of the cross-section of the separation cylinder 1. The outer side wall of the pressing tube 4 is in sliding close contact with the inner side wall of the separation cylinder 1. The wood block can be reliably pressed below the water surface. An annular counterweight 9 is coaxially fixed to the outer side wall of the pressing tube 4. The counterweight 9 is arranged near the upper end of the pressing tube 4. While ensuring an increase in the weight of the pressing tube 4, the counterweight 9 does not affect the water adding operation from the inside of the pressing tube 4 to the inside of the separation cylinder 1.

[0043] The mesh diameter of the permeable filter screen 5 is smaller than the mesh diameter of the filter screen 3. This design ensures that the pine wood nematodes in the wood block will not pass through the permeable filter screen 5 and enter the pressing tube 4.

[0044] More specifically, it further includes a funnel 10. The funnel 10 is vertically arranged and its large-diameter end is hermetically fixed and communicated with the lower opening end of the separation cylinder 1. The small-diameter end of the funnel 10 is fixed and communicated with the inlet of the valve body 6. The pine wood nematodes passing through the support filter screen 2 can be gathered at the inlet of the valve body 6. When the valve body 6 is opened, all the pine wood nematodes passing through the support filter screen 2 can enter the solution bottle 7.

[0045] More specifically, it further includes a base 11 and a column 12. The base 11 is horizontally arranged, and a limiting groove 110 with one end open is integrally formed at its upper end. The lower end of the solution bottle 7 can be arranged inside the limiting groove 110, and the outer sidewall of the solution bottle 7 can abut against one end of the limiting groove 110. When the outer sidewall of the solution bottle 7 abuts against one end of the limiting groove 110, the solution bottle 7 is arranged in place at this time, that is, the opening end of the solution bottle 7 is vertically aligned with the outlet of the valve body 6. There are multiple columns 12, which are evenly arranged along the circumferential direction of the separation cylinder 1. The columns 12 are vertically arranged, and their lower ends are fixed to the base 11, and the upper ends of the columns 12 are fixed to the separation cylinder 1. The separation cylinder 1 can be reliably arranged vertically.

[0046] When the device is in use, first, place the empty solution bottle 7 into the limiting groove 110, lay the filter net 3 and install the pressing ring 8; second, place the wood block to be detected with an appropriate length into the separation cylinder 1; third, insert the lower end of the pressing tube 4 into the separation cylinder 1 to limit the wood block between the water-permeable filter net 5 and the filter net 3; fourth, add water into the inner side of the pressing tube 4 until the liquid level of the water inside the pressing tube 4 is above the water-permeable filter net 5; fifth, after the wood block is soaked for a period of time, open the valve body 6, and the water mixed with pine wood nematodes will flow into the solution bottle 7 from the valve body 6. Take out the solution bottle 7 from the limiting groove 110 and observe the solution in the solution bottle 7 by using optical equipment.

[0047] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. For the same or similar parts among the embodiments, reference can be made to each other.

[0048] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. An auxiliary device for separating Bursaphelenchus xylophilus at ports, characterized in that, Comprising: A separation cylinder (1), the separation cylinder (1) is vertically arranged with both ends open, a support filter screen (2) is horizontally fixed inside the separation cylinder (1), a filter screen (3) is laid on the upper surface of the support filter screen (2), the pore diameter of the filter screen (3) is smaller than the pore diameter of the support filter screen (2), and a wood block from which pine wood nematodes are to be extracted can be placed inside the separation cylinder (1) and above the filter screen (3); A downward pressure tube (4), the downward pressure tube (4) is vertically arranged and its lower end is slidably inserted into the separation cylinder (1), a permeable filter screen (5) is horizontally fixed at the lower end of the downward pressure tube (4), and the lower surface of the permeable filter screen (5) can abut against the wood block; A valve body (6), the valve body (6) is installed on the separation cylinder (1) and is located below the support filter screen (2), and the inlet of the valve body (6) is connected to the lower end of the separation cylinder (1); A solution bottle (7), the solution bottle (7) can be vertically arranged below the valve body (6), and the outlet of the valve body (6) can be located inside the opening end of the solution bottle (7).

2. The auxiliary device for separating Bursaphelenchus xylophilus at ports according to claim 1, characterized in that, The outer contour of the support filter screen (2) is circular, the outer side wall of the support filter screen (2) is closely fixed to the inner side wall of the separation cylinder (1), the outer contour of the filter screen (3) is circular, and the outer side wall of the filter screen (3) is closely arranged with the inner side wall of the separation cylinder (1).

3. An auxiliary device for separating Bursaphelenchus xylophilus at ports according to claim 2, characterized in that, Also included is a pressing ring (8), the pressing ring (8) is horizontally arranged inside the separation cylinder (1), the lower end of the pressing ring (8) is closely attached to the upper surface of the filter screen (3), and the wood block can be arranged inside the pressing ring (8).

4. The auxiliary device for separating Bursaphelenchus xylophilus at ports according to claim 1, wherein The outer contour of the cross-section of the downward pressure tube (4) is the same as the inner contour of the cross-section of the separation cylinder (1), and the outer side wall of the downward pressure tube (4) is slidably and closely attached to the inner side wall of the separation cylinder (1); an annular counterweight block (9) is coaxially fixed to the outer side wall of the downward pressure tube (4), and the counterweight block (9) is arranged close to the upper end of the downward pressure tube (4).

5. An auxiliary device for separating Bursaphelenchus xylophilus at ports according to claim 1, characterized in that, The pore diameter of the permeable filter screen (5) is smaller than the pore diameter of the filter screen (3).

6. The auxiliary device for separating Bursaphelenchus xylophilus at ports according to claim 1, wherein Also included is a funnel (10), the funnel (10) is vertically arranged and its large-diameter end is hermetically fixed and communicated with the lower opening end of the separation cylinder (1), and the small-diameter end of the funnel (10) is fixed and communicated with the inlet of the valve body (6).

7. An auxiliary device for separating Bursaphelenchus xylophilus at ports according to claim 1, characterized in that, Also included are a base (11) and columns (12), the base (11) is horizontally arranged and a limiting groove (110) with one end open is integrally formed at its upper end, and the lower end of the solution bottle (7) can be arranged inside the limiting groove (110); there are multiple columns (12) which are evenly arranged along the circumferential direction of the separation cylinder (1), the columns (12) are vertically arranged and their lower ends are fixed to the base (11), and the upper ends of the columns (12) are fixed to the separation cylinder (1).

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