Fumigating device for preventing and treating diseases and insect pests in forestry

Abstract

The utility model belongs to the technical field of fumigating devices, and particularly relates to a fumigating device for preventing and controlling diseases and insect pests in forestry, which comprises a protective shell, a medicine containing box inserted and mounted on one side of the protective shell, a plurality of heating rods fixedly mounted on the inner wall of the protective shell, and a plurality of second air holes and first sliding grooves formed in the protective shell, a first sliding plate is slidably mounted in the first sliding groove, a plurality of first air holes are formed in the first sliding plate, and the first air holes and the second air holes are distributed in a crossed mode. The fixing assembly is located in the first sliding plate and used for fixing the position of the first sliding plate; the supporting block is installed at the bottom of the protective shell in a sliding mode, and a threaded rod is rotatably installed in the protective shell and located above the supporting block. When the whole device is used, external air cannot enter the protective shell, and a fumigant in the protective shell overflows to the outside, so that the service time of the fumigant is prolonged; meanwhile, the height of the device can be increased twice, and the use flexibility of the device is improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of fumigation devices, and in particular relates to a fumigation device used for preventing and controlling plant diseases and insect pests in forestry. Background Art

[0002] Fumigation is a technical means that uses compounds such as fumigants in a closed environment, through specific temperature and pressure conditions, to produce gas concentrations sufficient to kill pests, pathogens or other harmful organisms.

[0003] For example, a Chinese patent with publication number CN216363358U discloses a forestry pest control fumigation device, comprising a fixed frame and a sliding drawer, a circular groove is provided on the inner side of the fixed frame, and a fixing screw penetrates the inner side of the fixed frame, a connecting shaft is arranged on the top of the fixed frame, and a connecting sleeve is arranged on the outer side of the connecting shaft, a hollow box is arranged on the side of the connecting sleeve, and a connecting plate is arranged on the top of the hollow box, the sliding drawer is arranged on the inner side of the hollow box, and a handle is arranged in the middle position of the sliding drawer, a sliding block is arranged on the side of the sliding drawer, and a locking baffle is arranged at the end of the sliding drawer, a fumigation box is arranged on the inner side of the sliding drawer, and a heating tube is arranged on the side of the fumigation box; the utility model is convenient for adaptive installation and fixation of the device, convenient for adaptive adjustment of the device, convenient for adding materials and fumigation treatment of pests and diseases, and convenient for reminding and warning people.

[0004] The above patent has the following problems:

[0005] This patent has some disadvantages when in use, such as: the height of the device is fixed when in use, and it cannot be flexibly adjusted according to the height of the fumigated material, which reduces the flexibility of the device and may lead to poor insecticide effect. At the same time, when the device is not in use, the agent is always in contact with the air, and the agent will evaporate quickly, resulting in a shorter use time of the agent. In view of this, we propose a fumigation device for forestry pest control. Utility Model Content

[0006] The utility model aims to provide a fumigation device for preventing and controlling plant diseases and insect pests in forestry, so as to solve the problems raised in the above-mentioned background technology.

[0007] In view of this, the utility model provides a fumigation device for preventing and controlling pests and diseases in forestry, comprising:

[0008] A protective shell, a medicine box is plugged and installed on one side of the protective shell, a plurality of heating rods are fixedly installed on the inner wall of the protective shell, a plurality of air holes 2 and a sliding groove 1 are opened in the protective shell, a sliding plate 1 is slidably installed in the sliding groove 1, a plurality of air holes 1 are opened on the sliding plate 1, and the plurality of air holes 1 and the plurality of air holes 2 are cross-distributed;

[0009] A fixing assembly, the fixing assembly is located in the sliding plate 1 and is used to fix the position of the sliding plate 1;

[0010] A support block, wherein the support block is slidably mounted at the bottom of the protective shell, a threaded rod is rotatably mounted in the protective shell and above the support block, the lower end of the threaded rod extends into the support block, and the lower end of the threaded rod is threadedly connected to the support block, the upper end of the threaded rod passes through the protective shell and extends to the outside, two sliding grooves 2 are provided in the support block, and a support plate is slidably mounted in the sliding grooves 2;

[0011] Two limiting components, both of which are located in the supporting block and are used to limit the positions of the two supporting plates respectively.

[0012] In the technical solution, when the overall device is needed, the fumigant is first poured into the medicine box, and then the personnel insert the medicine box into the protective shell, and then start a plurality of heating rods, which can heat the fumigant, and then the fumigant overflows from the protective shell through the plurality of air holes 2 and the plurality of air holes 1, and can kill pests, germs or other harmful organisms;

[0013] When the whole device is used, the personnel turn off the heating rods, and the position of the sliding plate 1 can be fixed by the fixed assembly. At the same time, the ventilation holes 1 and the ventilation holes 2 are staggered, so that the outside air does not enter the protective shell, and the fumigant in the protective shell overflows to the outside, thereby increasing the use time of the fumigant.

[0014] When the height of the entire device needs to be increased, first rotate the threaded rod. Under the action of the thread, the threaded rod drives the support block to slide downward. The position of the two support plates can be fixed by the set limit assembly. Under the action of the two support plates and the support block, the height of the device can be raised twice, which improves the flexibility of the device.

[0015] In the above technical solution, further, the fixing assembly includes:

[0016] A sliding groove three, wherein the sliding groove three is provided in the sliding plate one, a limit block is slidably installed in the sliding groove three, one end of the limit block passes through the sliding groove three and extends to the outside, and two springs two fixed to the inner wall of the sliding groove three are fixedly installed on the top of the limit block;

[0017] The groove is opened at the bottom of the sliding groove one and is located below the limit block. The bottom of the limit block passes through the sliding groove three and extends into the groove. The bottom of the limit block is plugged into the groove.

[0018] In the technical solution, when the overall device is used, the personnel turns off the heating rods, then pulls the limit block upward to slide in the direction of spring two, and the two springs two are squeezed and contracted. When the bottom of the limit block completely enters the sliding groove three, the sliding plate one is pulled in the direction of spring one, and the springs one are squeezed and contracted. When the bottom of the limit block is directly above the groove, the personnel releases the limit block. Under the action of the rebound force of the two springs two, the limit block slides downward, and then the bottom of the limit block is inserted into the groove, so that the position of the sliding plate one can be fixed. At the same time, the several air holes one and the several air holes two are staggered, so that the outside air will not enter the protective shell, and the fumigant in the protective shell overflows to the outside, thereby increasing the use time of the fumigant.

[0019] In the above technical solution, further, the limit assembly includes:

[0020] A second sliding plate, wherein the second sliding plate is slidably mounted in the second sliding groove, and a plurality of third springs fixed to the inner wall of the second sliding groove are fixedly mounted on one side of the second sliding plate;

[0021] A plurality of limit grooves are provided on one side of the support plate close to the second sliding plate, one side of the second sliding plate extends into the corresponding limit groove, and one side of the second sliding plate is plugged into the limit groove, and one end of the second sliding plate passes through the second sliding groove and extends to the outside.

[0022] In the present technical scheme, when it is necessary to increase the height of the overall device, the threaded rod is first rotated. Under the action of the thread, the threaded rod drives the support block to slide downward. Then a person pinches the two sliding plates 2 to slide and approach each other. Then one side of the two sliding plates 2 are respectively disengaged from the corresponding limit grooves. At the same time, a number of springs 3 are squeezed and contracted. Under the action of gravity, the two support plates slide downward. When the two support plates slide to appropriate positions, the person releases the two sliding plates 2. Under the action of the rebound force of the number of springs 3, the two sliding plates 2 slide and move away from each other. Finally, one side of the two sliding plates 2 are inserted into the corresponding limit grooves, so that the positions of the two support plates can be fixed. Under the action of the two support plates and the support block, the height of the device can be raised in two times, thereby improving the flexibility of the device.

[0023] In the above technical solution, further, a plurality of springs 1 fixed to an inner wall of a sliding groove 1 are fixedly mounted on one side of the sliding plate 1.

[0024] In the technical solution, by setting a plurality of springs 1, it is ensured that the sliding plate 1 can automatically slide away from the spring 1 and reset, and the fumigant is ensured to overflow to the outside of the protective shell through the plurality of air holes 2 and the plurality of air holes 1.

[0025] In the above technical solution, further, the cross-section of the support plate is U-shaped, and the plurality of limit grooves are linearly distributed at equal intervals.

[0026] In this technical solution, it is ensured that the support plate does not affect the use of the threaded rod, and that the heights of the support plate that can be adjusted are linearly and evenly spaced.

[0027] In the above technical solution, further, the medicine box is located between a plurality of heating rods, and a handle is fixedly mounted on one side of the medicine box.

[0028] In the technical solution, it is ensured that a plurality of heating rods can evenly heat the fumigant in the medicine box.

[0029] In the above technical solution, further, the sliding groove 1 and the air holes 2 are both located above the medicine box, the sliding plate 1 is located on the top of the air holes 2, and the sliding groove 1 is connected to a plurality of air holes 2.

[0030] In the technical solution, it is ensured that the fumigant overflows out of the protective shell through the plurality of air holes 2 and the plurality of air holes 1, thereby killing pests, germs or other harmful organisms.

[0031] The beneficial effects of the utility model are:

[0032] 1. The fumigation device for preventing and controlling diseases and insect pests in forestry, when the whole device is used, the personnel turn off the plurality of heating rods, and the position of the sliding plate 1 can be fixed by the provided fixing assembly, and at the same time, the plurality of air holes 1 and the plurality of air holes 2 are staggered, so that the outside air will not enter the protective shell, and the fumigant in the protective shell overflows to the outside, thereby increasing the use time of the fumigant.

[0033] 2. The fumigation device for forest pest control, when it is necessary to increase the height of the overall device, first rotate the threaded rod. Under the action of the thread, the threaded rod drives the support block to slide downward. The position of the two support plates can be fixed by the set limit assembly. Under the action of the two support plates and the support block, the height of the device can be raised twice, which improves the flexibility of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0035] Figure 2 It is a schematic diagram of the partial explosion structure of the utility model;

[0036] Figure 3 This is one of the schematic diagrams of the cross-sectional structure of the protective shell of the utility model;

[0037] Figure 4 This is the second schematic diagram of the cross-sectional structure of the protective shell of the utility model;

[0038] Figure 5 It is a schematic diagram of a cross-sectional structure of a sliding plate of the utility model;

[0039] Figure 6 The utility model Figure 5 The enlarged structural diagram at A in the middle;

[0040] Figure 7 This is the third schematic diagram of the cross-sectional structure of the protective shell of the utility model;

[0041] Figure 8 It is a schematic diagram of the support block area structure of the utility model;

[0042] Fig. 9 It is a schematic diagram of the cross-sectional structure of the support block of the utility model.

[0043] The symbols in the figure are:

[0044] 1. Protective shell; 2. Medicine box; 3. Heating rod; 4. Sliding slot 1; 5. Sliding plate 1; 6. Ventilation hole 1; 7. Ventilation hole 2; 8. Support block; 9. Sliding slot 2; 10. Support plate; 11. Spring 1; 12. Sliding slot 3; 13. Limit block; 14. Spring 2; 15. Sliding plate 2; 16. Spring 3; 17. Limit slot; 18. Handle; 19. Threaded rod; 20. Groove. DETAILED DESCRIPTION

[0045] The following will be combined with the drawings in the embodiments of the present application to clearly describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, rather than all the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments in the present application belong to the scope of protection of this application.

[0046] In the description of the present application, it should be noted that the terms used here are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to ordinary technicians in the relevant fields may not be discussed in detail, but in appropriate cases, the techniques, methods and equipment should be regarded as part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as merely exemplary, rather than as a limitation. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0047] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and are not used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable under appropriate circumstances, so that the embodiments of the present application can be implemented in an order other than those illustrated or described here, and the objects distinguished by "first", "second", etc. are generally of one type, and the number of objects is not limited. For example, the first object can be one or more. In addition, "and / or" in the specification and claims represents at least one of the connected objects, and the character " / " generally indicates that the objects associated with each other are in an "or" relationship.

[0048] It should be noted that, in the description of the present application, the orientation or positional relationship indicated by terms such as "front, back, up, down, left, right", "lateral, vertical, perpendicular, horizontal" and "top, bottom" are usually based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description. Unless otherwise stated, these orientation words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present application; the orientation words "inside and outside" refer to the inside and outside relative to the contour of each component itself.

[0049] It should be noted that, in the present application, the terms "comprise", "include" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, an element defined by the sentence "comprises one..." does not exclude the presence of other identical elements in the process, method, article or device including the element. In addition, it should be noted that the scope of the method and device in the embodiment of the present application is not limited to performing functions in the order shown or discussed, and may also include performing functions in a substantially simultaneous manner or in reverse order according to the functions involved, for example, the described method may be performed in an order different from that described, and various steps may also be added, omitted, or combined. In addition, the features described with reference to certain examples may be combined in other examples.

[0050] Embodiment 1:

[0051] See also Figure 1 - Fig. 9 As shown, this embodiment provides a fumigation device for forestry pest control, including:

[0052] A protective shell 1, a medicine box 2 is plugged and installed on one side of the protective shell 1, a plurality of heating rods 3 are fixedly installed on the inner wall of the protective shell 1, a plurality of air holes 27 and a sliding groove 14 are opened in the protective shell 1, a sliding plate 15 is slidably installed in the sliding groove 14, a plurality of air holes 16 are opened on the sliding plate 15, and the plurality of air holes 16 and the plurality of air holes 27 are cross-distributed;

[0053] A fixing component, which is located inside the sliding plate 5 and is used to fix the position of the sliding plate 5;

[0054] Support block 8, support block 8 is slidably installed at the bottom of protective shell 1, a threaded rod 19 is rotatably installed in protective shell 1 and above support block 8, the lower end of threaded rod 19 extends into support block 8, and the lower end of threaded rod 19 is threadedly connected with support block 8, the upper end of threaded rod 19 passes through protective shell 1 and extends to the outside, two sliding grooves 9 are provided in support block 8, and support plate 10 is slidably installed in sliding groove 9;

[0055] Two limiting components, both of which are located in the supporting block 8 and are used to limit the positions of the two supporting plates 10 respectively.

[0056] When the overall device is needed, the fumigant is first poured into the medicine box 2, and then the personnel insert the medicine box 2 into the protective shell 1, and then the plurality of heating rods 3 are started, and the plurality of heating rods 3 can heat the fumigant, and then the fumigant overflows to the outside of the protective shell 1 through the plurality of air holes 2 7 and the plurality of air holes 1 6, and can kill pests, germs or other harmful organisms;

[0057] When the whole device is used, the personnel turn off the heating rods 3, and the position of the sliding plate 5 can be fixed by the fixing assembly. At the same time, the ventilation holes 1 6 and the ventilation holes 2 7 are staggered, so that the outside air does not enter the protective shell 1, and the fumigant in the protective shell 1 overflows to the outside, thereby increasing the use time of the fumigant;

[0058] When the height of the entire device needs to be increased, the threaded rod 19 is first rotated. Under the action of the thread, the threaded rod 19 drives the support block 8 to slide downward. The position of the two support plates 10 can be fixed by the set limit assembly. Under the action of the two support plates 10 and the support block 8, the height of the device can be raised twice, thereby improving the flexibility of the device.

[0059] In this embodiment, the fixing component includes:

[0060] A sliding groove 3 12 is provided in the sliding plate 1 5, a limit block 13 is slidably installed in the sliding groove 3 12, one end of the limit block 13 passes through the sliding groove 3 12 and extends to the outside, and two springs 2 14 fixed to the inner wall of the sliding groove 3 12 are fixedly installed on the top of the limit block 13;

[0061] The groove 20 is formed at the bottom of the sliding groove 1 4 and is located below the limit block 13. The bottom of the limit block 13 passes through the sliding groove 3 12 and extends into the groove 20. The bottom of the limit block 13 is plugged into the groove 20.

[0062] Among them, when the use of the entire device is completed, the personnel closes the plurality of heating rods 3, and then pulls the limit block 13 upward to slide in the direction of the spring two 14, and the two springs two 14 are squeezed and contracted. When the bottom of the limit block 13 completely enters the sliding groove three 12, the sliding plate one 5 is pulled in the direction of the spring one 11, and the plurality of springs one 11 are squeezed and contracted. When the bottom of the limit block 13 is located directly above the groove 20, the personnel releases the limit block 13. Under the action of the rebound force of the two springs two 14, the limit block 13 slides downward, and then the bottom of the limit block 13 is inserted into the groove 20, so that the position of the sliding plate one 5 can be fixed. At the same time, the plurality of air holes one 6 and the plurality of air holes two 7 are staggered, so that the outside air will not enter the protective shell 1, and the fumigant in the protective shell 1 overflows to the outside, thereby increasing the use time of the fumigant.

[0063] In this embodiment, the limit assembly includes:

[0064] A sliding plate 15, the sliding plate 15 is slidably mounted in the sliding groove 9, and a plurality of springs 16 fixed to the inner wall of the sliding groove 9 are fixedly mounted on one side of the sliding plate 15;

[0065] A plurality of limiting grooves 17, wherein the plurality of limiting grooves 17 are all provided on one side of the support plate 10 close to the second sliding plate 15, one side of the second sliding plate 15 extends into the corresponding limiting groove 17, and one side of the second sliding plate 15 is plugged and matched with the limiting groove 17, and one end of the second sliding plate 15 passes through the second sliding groove 9 and extends to the outside;

[0066] Among them, when it is necessary to increase the height of the entire device, first rotate the threaded rod 19. Under the action of the thread, the threaded rod 19 drives the support block 8 to slide downward, and then a person pinches the two sliding plates 15 to slide and approach each other, and then one side of the two sliding plates 15 respectively disengages from the corresponding limiting grooves 17, and at the same time, a number of springs three 16 are squeezed and contracted. Under the action of gravity, the two support plates 10 slide downward, and when the two support plates 10 slide to a suitable position, the person releases the two sliding plates 15. Under the action of the rebound force of the several springs three 16, the two sliding plates 15 slide and move away from each other, and finally one side of the two sliding plates 15 are inserted into the corresponding limiting grooves 17, so that the positions of the two support plates 10 can be fixed. Under the action of the two support plates 10 and the support block 8, the height of the device can be raised twice, thereby improving the flexibility of the device.

[0067] Embodiment 2:

[0068] This embodiment provides a fumigation device for forestry pest control, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0069] In this embodiment, a plurality of springs 11 fixed to the inner wall of the sliding groove 4 are fixedly installed on one side of the sliding plate 5.

[0070] Among them, by setting a plurality of springs 11, it is ensured that the sliding plate 5 can automatically slide in a direction away from the spring 11 and reset, ensuring that the fumigant overflows to the outside of the protective shell 1 through the plurality of air holes 2 7 and the plurality of air holes 6.

[0071] Embodiment 3:

[0072] This embodiment provides a fumigation device for forestry pest control, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0073] In this embodiment, the cross section of the support plate 10 is U-shaped, and a plurality of limiting grooves 17 are linearly distributed at equal intervals.

[0074] It is ensured that the support plate 10 does not affect the use of the threaded rod 19, and that the heights of the support plate 10 that can be adjusted are linearly and evenly spaced.

[0075] Embodiment 4:

[0076] This embodiment provides a fumigation device for forestry pest control, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0077] In this embodiment, the medicine box 2 is located between the plurality of heating rods 3 , and a handle 18 is fixedly mounted on one side of the medicine box 2 .

[0078] Therein, it is ensured that the plurality of heating rods 3 can evenly heat the fumigant in the medicine box 2 .

[0079] Embodiment 5:

[0080] This embodiment provides a fumigation device for forestry pest control, which, in addition to the technical solutions of the above embodiments, also has the following technical features.

[0081] In this embodiment, the sliding groove 1 4 and the air holes 2 7 are both located above the medicine box 2 , the sliding plate 1 5 is located on the top of the air holes 2 7 , and the sliding groove 1 4 is connected to a plurality of the air holes 2 7 .

[0082] The fumigant is ensured to overflow to the outside of the protective shell 1 through the plurality of air holes 2 7 and the plurality of air holes 1 6, so as to kill insects, germs or other harmful organisms.

[0083] Working principle: When the overall device is needed, first pour the fumigant into the medicine box 2, then pull the handle 18 and insert the medicine box 2 into the protective shell 1, then start the plurality of heating rods 3, the plurality of heating rods 3 can heat the fumigant, and then the fumigant overflows to the outside of the protective shell 1 through the plurality of air holes 2 7 and the plurality of air holes 1 6, which can kill pests, germs or other harmful organisms;

[0084] When the overall device is used, the personnel close the plurality of heating rods 3, then pull the limit block 13 upward to slide in the direction of the spring two 14, and the two springs two 14 are squeezed and contracted. When the bottom of the limit block 13 completely enters the sliding groove three 12, the sliding plate one 5 is pulled in the direction of the spring one 11, and the plurality of springs one 11 are squeezed and contracted. When the bottom of the limit block 13 is located directly above the groove 20, the personnel release the limit block 13. Under the action of the rebound force of the two springs two 14, the limit block 13 slides downward, and then the bottom of the limit block 13 is inserted into the groove 20, so that the position of the sliding plate one 5 can be fixed. At the same time, the plurality of air holes one 6 and the plurality of air holes two 7 are staggered, so that the outside air will not enter the protective shell 1, and the fumigant in the protective shell 1 overflows to the outside, thereby increasing the use time of the fumigant.

[0085] When it is necessary to increase the height of the overall device, first rotate the threaded rod 19. Under the action of the thread, the threaded rod 19 drives the support block 8 to slide downward. Then, a person pinches the two sliding plates 15 to slide and approach each other. Then, one side of the two sliding plates 15 respectively disengages from the corresponding limit grooves 17. At the same time, a number of springs three 16 are squeezed and contracted. Under the action of gravity, the two support plates 10 slide downward. When the two support plates 10 slide to a suitable position, a person releases the two sliding plates 15. Under the action of the rebound force of the several springs three 16, the two sliding plates 15 slide and move away from each other. Finally, one side of the two sliding plates 15 are inserted into the corresponding limit grooves 17, so that the positions of the two support plates 10 can be fixed. Under the action of the two support plates 10 and the support block 8, the height of the device can be raised twice, thereby improving the flexibility of the device.

[0086] The embodiments of the present application are described above in conjunction with the accompanying drawings. In the absence of conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present application is not limited to the above-mentioned specific implementation methods. The above-mentioned specific implementation methods are merely illustrative and not restrictive. Under the guidance of the present application, ordinary technicians in this field can also make many forms without departing from the purpose of the present application and the scope of protection of the claims, all of which are within the protection of the present application.

Claims

1. A fumigation device for forestry pest control, characterized in that: include: A protective shell (1), a medicine box (2) is plugged and installed on one side of the protective shell (1), a plurality of heating rods (3) are fixedly installed on the inner wall of the protective shell (1), a plurality of air holes (7) and a sliding groove (4) are provided in the protective shell (1), a sliding plate (5) is slidably installed in the sliding groove (4), a plurality of air holes (6) are provided on the sliding plate (5), and the plurality of air holes (6) and the plurality of air holes (7) are cross-distributed; A fixing assembly, the fixing assembly being located in the sliding plate 1 (5) and being used to fix the position of the sliding plate 1 (5); A support block (8), wherein the support block (8) is slidably mounted on the bottom of the protective shell (1), a threaded rod (19) is rotatably mounted in the protective shell (1) and located above the support block (8), the lower end of the threaded rod (19) extends into the support block (8), and the lower end of the threaded rod (19) is threadedly connected to the support block (8), the upper end of the threaded rod (19) passes through the protective shell (1) and extends to the outside, two sliding grooves (9) are provided in the support block (8), and a support plate (10) is slidably mounted in the sliding grooves (9); Two limiting assemblies, both of which are located in the support block (8) and are used to limit the positions of the two support plates (10) respectively.

2. A fumigation device for forestry pest control according to claim 1, characterized in that: The fixing assembly comprises: A sliding groove three (12), wherein the sliding groove three (12) is provided in the sliding plate one (5), a limit block (13) is slidably installed in the sliding groove three (12), one end of the limit block (13) passes through the sliding groove three (12) and extends to the outside, and two springs two (14) fixed to the inner wall of the sliding groove three (12) are fixedly installed on the top of the limit block (13); A groove (20), wherein the groove (20) is formed at the bottom of the sliding groove one (4) and is located below the limit block (13); the bottom of the limit block (13) passes through the sliding groove three (12) and extends into the groove (20); the bottom of the limit block (13) is plugged into and matched with the groove (20).

3. A fumigation device for forestry pest control according to claim 2, characterized in that: The limiting component comprises: A second sliding plate (15), the second sliding plate (15) is slidably mounted in the second sliding groove (9), and a plurality of third springs (16) fixed to the inner wall of the second sliding groove (9) are fixedly mounted on one side of the second sliding plate (15); A plurality of limiting grooves (17), wherein the plurality of limiting grooves (17) are all arranged on a side of the support plate (10) close to the second sliding plate (15), one side of the second sliding plate (15) extends into the corresponding limiting groove (17), and one side of the second sliding plate (15) is plugged into and matched with the limiting groove (17), and one end of the second sliding plate (15) passes through the second sliding groove (9) and extends to the outside.

4. The fumigation device for forestry pest control according to claim 1, characterized in that: A plurality of springs (11) fixed to the inner wall of the sliding groove (4) are fixedly mounted on one side of the sliding plate (5).

5. The fumigation device for forestry pest control according to claim 1, characterized in that: The cross section of the support plate (10) is U-shaped.

6. The fumigation device for forestry pest control according to claim 3, characterized in that: The plurality of limit grooves (17) are linearly distributed at equal intervals.

7. The fumigation device for forestry pest control according to claim 1, characterized in that: The medicine box (2) is located between a plurality of heating rods (3), and a handle (18) is fixedly mounted on one side of the medicine box (2).

8. The fumigation device for forest pest control according to claim 1, characterized in that: The sliding groove 1 (4) and the air vent 2 (7) are both located above the medicine box (2), the sliding plate 1 (5) is located on the top of the air vent 2 (7), and the sliding groove 1 (4) is connected to a plurality of air vent 2 (7).

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