A screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks

Abstract

An embodiment of the present application provides a screening device for salt-tolerant pumpkin rootstocks, which relates to the technical field of grafting cultivation. A screening device for salt-tolerant pumpkin rootstocks includes a screening box, a seed soaking box is fixedly connected to the left side of the screening box, and a sterilization box is fixedly connected to the right side of the screening box; a fixing frame is fixedly connected to the back of the screening box, and sealing frames are fixedly connected to both sides of the fixing frame. An adjusting component and a seed soaking component for soaking and disinfecting pumpkin rootstocks are respectively arranged on the fixing frame, and the adjusting component includes a double-headed motor fixed between the screening box and the fixing frame; a supply component and a germination accelerating component for temperature control and air exposure of the screening box, the seed soaking box and the sterilization box are arranged on the sealing frame. By combining the methods of seed soaking and sterilization and temperature-controlled germination acceleration for pumpkin rootstocks, the high-efficiency screening effect of their salt tolerance is achieved. While saving time and labor, it also accelerates the germination rate of pumpkin rootstocks, improves their success rate and screening efficiency.

Description

Technical Field

[0001] The present invention belongs to the technical field of grafting cultivation, and particularly relates to a screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks. Background Art

[0002] A rootstock refers to the plant that bears the scion during grafting propagation. The rootstock can be a whole fruit tree, or a root segment or branch segment of the tree body. It has the functions of fixing and supporting the scion, and after healing with the scion, it forms a plant for growth and fruiting. The rootstock is the basis of the fruit tree grafted seedling. It has good grafting affinity, a long lifespan of the seedling, and is easy to cultivate. Before grafting the pumpkin rootstock, screening operations are carried out according to its salt and alkali tolerance.

[0003] In the prior art (a patent application with the publication number CN206895431U and the patent name of a screening device for salt-tolerant and alkali-tolerant wild jujube rootstocks), through the coordinated use of a controller, a first water pump, and a second water pump, it can automatically control the flow rate and time of the nutrient solution and the saline-alkali solution, greatly reducing the screening error of the wild jujube rootstock and reducing the screening cost. In the process of implementing this technical solution, it is found that there are at least the following problems in the prior art.

[0004] During the screening of pumpkin rootstocks according to the salt and alkali tolerance, most of the time, multiple pumpkin rootstock seedlings or seeds are manually inserted into the culture soil, and then their growth conditions in the saline-alkali solution are observed to know the salt and alkali tolerance screening situation of the pumpkin rootstock. This process is not only time-consuming and laborious, but also has an overly long screening period, easily missing the grafting time of the pumpkin rootstock, resulting in more losses than gains. Summary of the Invention

[0005] This application aims to at least solve one of the technical problems in the prior art that it is impossible to combine seed soaking and sterilization with temperature-controlled germination acceleration for pumpkin rootstocks to achieve an efficient screening effect of their salt and alkali tolerance. This process is time-consuming and laborious, and has an overly long cycle, easily missing the grafting time of the pumpkin rootstock. For this reason, this application proposes a screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks.

[0006] To achieve the above object, the specific technical solution of the present invention is as follows:

[0007] A screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks, including a screening box, the left side of the screening box is fixedly connected with a seed soaking box, and the right side of the screening box is fixedly connected with a sterilization box;

[0008] The back of the screening box is fixedly connected with a fixing frame, and both sides of the fixing frame are fixedly connected with sealing frames. The fixing frame is respectively provided with an adjusting component and a seed soaking component for soaking and disinfecting pumpkin rootstocks, and the adjusting component includes a double-headed motor fixed between the screening box and the fixing frame;

[0009] A supply component and a germination accelerating component for screening box, seed soaking box and sterilization box air exposure temperature control are arranged on the sealing frame.

[0010] Preferably, the adjusting component further includes a driving circular gear fixed on an output shaft of the double-headed motor, and a rotating shaft is rotatably connected to one side of the screening box close to the fixing frame. The other end of the rotating shaft is embedded with a first electric push rod, and the piston rod of the first electric push rod is fixedly connected with a driven circular gear used in cooperation with the driving circular gear. A bent arm is fixedly connected to the rotating shaft, and an electric cylinder is rotatably connected to one side of the bent arm far from the fixing frame through a mounting member.

[0011] Preferably, the seed soaking component includes brackets fixed on both sides of the bottom of the piston rod of the electric cylinder, and breeding boxes fixedly connected to the bottoms of the brackets and slidably matched with the screening box, the seed soaking box and the sterilization box are provided with breeding grids around the breeding box, and communication grooves communicated with the breeding grids are provided around the inner cavity of the breeding box. An upper cover used in cooperation with the breeding grid is clamped on the top of the breeding box, and guide rail edges are fixedly connected to both sides of the bottom of the breeding box, and a lower sealing plate is clamped in the guide rail edges.

[0012] Preferably, the supply component includes a main synchronous pulley fixed on the output shaft of the double-headed motor close to the driving circular gear, and the outer side of the main synchronous pulley is connected by a synchronous belt to a sub-synchronous pulley rotatably matched with the sealing frame. An exhaust fan is fixedly connected to the inner cavity of the sub-synchronous pulley through a fan shaft, and an air collecting head is communicated with the outer side of the sealing frame. The outer end of the air collecting head is communicated with a first-stage pressurizing pipe, and the other end of the first-stage pressurizing pipe is communicated with a three-way valve.

[0013] Preferably, the germination accelerating component includes an aeration head communicated with the inner end of the three-way valve and unidirectionally communicated with the bottoms of the seed soaking box and the sterilization box respectively. A pressure sensor is embedded at one end of the three-way valve. The other end of the three-way valve is communicated with a second-stage pressurizing pipe, and the inner end of the second-stage pressurizing pipe is communicated with a four-way valve. The top of the four-way valve is unidirectionally communicated with a small-scale cooling and heating integrated machine fixedly matched with the screening box, and the front end of the four-way valve is communicated with an aeration pipe unidirectionally communicated with the screening box.

[0014] Preferably, an arc-shaped slide rail is fixedly connected to one side of the screening box close to the fixing frame, and a limiting slide frame fixedly matched with the bent arm is slidably connected to the inner cavity of the arc-shaped slide rail. An angle sensor is fixedly connected to the outer side of the bent arm far from the limiting slide frame.

[0015] Preferably, a positioning magnet is fixedly connected to one side of the screening box close to the arc-shaped slide rail, and a circuit breaker is fixedly connected to the outer side of the bent arm close to the limiting slide frame. An electromagnet embedded with the bent arm is arranged on the circuit breaker, and the positioning magnet and the electromagnet have opposite magnetic polarities.

[0016] Preferably, guide rails are fixedly connected to the four sides of the breeding box, and guide grooves that are slidably engaged with the guide rails are provided in the four sides of the inner cavities of the screening box, the seed soaking box, and the sterilization box. The depths of the guide grooves in the screening box, the seed soaking box, and the sterilization box are the same.

[0017] Preferably, the breeding cells are arranged in an array along the central axis of the breeding box, and small holes that are communicatively engaged with the breeding cells are provided in the four sides of the upper cover and the lower cover plate.

[0018] Preferably, the diameters of the breeding cells are sequentially increased from top to bottom. A pinch ear is fixedly connected to the center of the top of the upper cover, and a pinch groove is provided on the outer side of the lower cover plate.

[0019] The pumpkin salt-tolerant rootstock screening device of the present invention has the following advantages:

[0020] 1. During the screening of the salt tolerance of the pumpkin rootstock by this pumpkin salt-tolerant rootstock screening device, first, a unified driving source is provided by the double-headed motor, saving the driving power cost. After the first electric push rod adjusts the meshing stroke between the driven circular gear and the driving circular gear, the driving circular gear that is in place of meshing drives the bent arm through the rotating shaft on the driven circular gear to achieve the left-right angle adjustment effect, and then the electric cylinder realizes the height lifting adjustment effect to meet the orientation adjustment requirements during the seed soaking and sterilization of the pumpkin rootstock. After the electric cylinder adjusts the height of the breeding box with the angle adjusted through the bracket, the soaking liquid and the sterilization liquid in the seed soaking box and the sterilization box respectively reach the area of the pumpkin rootstock seedling rods or seeds in the breeding cells through the intercommunication grooves, and the pumpkin rootstock seedling rods or seeds inside are respectively subjected to seed soaking and sterilization treatments, improving the germination rate and success rate of the pumpkin rootstock seedling rods or seeds. At the same time, the upper cover and the two lower cover plates inside the guide rail edge seal the breeding box up and down to prevent the pumpkin rootstock seedling rods or seeds from floating during the seed soaking and sterilization treatments, and keep them bound in the breeding box for sufficient seed soaking and sterilization treatments.

[0021] 2. For this pumpkin salt-tolerant rootstock screening device, next, the main synchronous pulley drives the exhaust fans on two sets of auxiliary synchronous pulleys to rotate synchronously within two sets of sealed frames through a synchronous belt. After generating wind pressure and wind force within the two sets of sealed frames, the wind pressure and wind force are supplied into two three-way valves through the first-stage pressure pipes on two sets of air collecting heads, completing the supply and transportation of the wind pressure and wind force. The wind pressure and wind force supplied into the two three-way valves reach the seed soaking tank and the sterilization tank respectively through two aeration heads, and perform aeration treatment on the seed soaking liquid and the sterilization liquid in the seed soaking tank and the sterilization tank, enabling the seed soaking liquid and the sterilization liquid to come into full contact with the pumpkin rootstock seedlings or seeds in the breeding box after they arrive, further improving the high germination rate of the pumpkin rootstock seedlings or seeds. While two pressure sensors are used to monitor the wind pressure in the two three-way valves in real time, two second-stage pressure pipes concentrate the wind pressure and wind force and supply them into a four-way valve, and a small-scale cold and heat integrated machine provides a cold source or a heat source supply to the four-way valve. Then, according to the current environmental requirements, the cold source or heat source in the four-way valve is supplied into the screening box through an air supply pipe to perform cooling and heating treatment on the saline-alkali liquid therein, enabling the pumpkin rootstock seedlings or seeds to grow at an appropriate temperature, accelerating their germination rate, and further increasing the success rate of the pumpkin rootstock seedlings or seeds in a saline-alkali liquid environment, and increasing the number of pumpkin rootstock seedlings or seeds screened for salt tolerance, so as to avoid seed waste.

[0022] 3. For this pumpkin salt-tolerant rootstock screening device, then, first, the second electric push rod adjusts the meshing stroke between the driving bevel gear and the driven bevel gear, and then the double-headed motor drives the main mixing frame on the driven bevel gear to rotate synchronously through the engaged driving bevel gear, stirring and preparing the saline-alkali liquid raw material added into the screening box. The saline-alkali liquid can be prepared on-site. The driven bevel gear drives the auxiliary mixing frames on two sets of differential bevel gears to rotate through two bevel gear frames, stirring and preparing the seed soaking liquid and the sterilization liquid raw materials in the seed soaking tank and the sterilization tank. Similarly, the preparation effects of the seed soaking liquid and the sterilization liquid are achieved on-site, which is convenient and fast. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following will briefly introduce the drawings required to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the present invention, and therefore should not be regarded as limiting the scope. For those of ordinary skill in the art, other related drawings can be obtained based on these drawings without creative efforts.

[0024] Figure 1 It is the front view of the initial state of the structure of a pumpkin salt-tolerant rootstock screening device of the present invention;

[0025] Figure 2 It is the rear view of the structure of a pumpkin salt-tolerant rootstock screening device of the present invention in the seed soaking state;

[0026] Figure 3 Front view of the sterilization state of the structure of a salt - alkali tolerant rootstock screening device for pumpkins according to the present invention;

[0027] Figure 4 Rear view of the screening state of the structure of a salt - alkali tolerant rootstock screening device for pumpkins according to the present invention;

[0028] Figure 5 Partial rear - view sectional view of the structure of a salt - alkali tolerant rootstock screening device for pumpkins according to the present invention;

[0029] Figure 6 Inner view of the structure of a salt - alkali tolerant rootstock screening device for pumpkins according to the present invention;

[0030] Figure 7 Rear view of the structure of the double - head motor, supply component and germination - promoting component according to the present invention;

[0031] Figure 8 Rear view of the initial state of the structure of the adjusting component and seed - soaking component according to the present invention;

[0032] Figure 9 Rear view of the working state of the structure of the adjusting component and seed - soaking component according to the present invention;

[0033] Figure 10 Partial side view of the structure of the adjusting component and bracket according to the present invention;

[0034] Figure 11 Exploded upward view of the structure of the breeding box according to the present invention;

[0035] Figure 12 Side - view sectional view of the structure of the breeding box according to the present invention;

[0036] Figure 13 Initial - state diagram of the structure of the double - head motor and mixing component according to the present invention;

[0037] Figure 14 Working - state diagram of the structure of the double - head motor and mixing component according to the present invention;

[0038] Figure 15 Side view of the structure of the screening box, seed - soaking box and sterilization box according to the present invention.

[0039] Explanation of the markings in the figure: 1. Screening box; 2. Seed soaking box; 3. Sterilization box; 4. Fixing frame; 5. Sealing frame; 6. Adjustment assembly; 61. Double-headed motor; 62. Driving circular gear; 63. Rotating shaft; 64. First electric push rod; 65. Driven circular gear; 66. Bending arm; 67. Electric cylinder; 7. Seed soaking assembly; 71. Bracket; 72. Breeding box; 73. Breeding grid; 74. Interconnecting groove; 75. Upper cover; 76. Guide rail edge; 77. Lower cover plate; 8. Supply assembly; 81. Main synchronous wheel; 82. Secondary synchronous wheel; 83. Exhaust fan; 84. Wind collecting head; 85. First-stage pressurized pipe; 86. Three-way valve; 9. Germination assembly; 91. Aeration head; 92. Pressure sensor; 93. Secondary pressure pipe; 94. Four-way valve; 95. Small hot and cold integrated machine; 96. Aeration pipe; 10. Mixing assembly; 101. Second electric push rod; 102. Driving bevel gear; 103. Driven bevel gear; 104. Main mixing rack; 105. Bevel gear rack; 106. Differential bevel gear; 107. Auxiliary mixing rack; 11. Arc slide; 12. Limit slide; 13. Angle sensor; 14. Circuit breaker; 15. Electromagnet; 16. Positioning magnet; 17. Guide rail groove; 18. Guide rail. DETAILED DESCRIPTION

[0040] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments:

[0041] like Figures 1 - 15 As shown, a pumpkin salt-alkali tolerant rootstock screening device of the present invention comprises a screening box 1, a seed soaking box 2 is fixedly connected to the left side of the screening box 1, and a sterilization box 3 is fixedly connected to the right side of the screening box 1, and the bottoms of the screening box 1, the seed soaking box 2 and the sterilization box 3 are all connected to an exhaust pipe with a one-way valve, and the saline-alkali solution, seed soaking solution and sterilization solution in the screening box 1, the seed soaking box 2 and the sterilization box 3 after use are discharged respectively;

[0042] The back of the screening box 1 is fixedly connected to a fixing frame 4, and both sides of the fixing frame 4 are fixedly connected to a sealing frame 5, and the fixing frame 4 is respectively provided with an adjusting component 6 and a soaking component 7 for soaking and disinfecting pumpkin stock seeds, and the adjusting component 6 includes a double-headed motor 61 fixed between the screening box 1 and the fixing frame 4, which soaks and sterilizes the pumpkin stock seedling stems or seeds, thereby improving the germination rate and success rate of the pumpkin stock seedling stems or seeds; the sealing frame 5 is provided with a supply component 8 and a germination component 9 for aeration temperature control of the screening box 1, the soaking box 2 and the sterilizing box 3, so that the pumpkin stock seedling stems or seeds are kept at a suitable temperature for growth, accelerate their germination rate, and further improve the success rate of the pumpkin stock seedling stems or seeds in a saline-alkali solution environment, and increase the number of pumpkin stock seedling stems or seeds screened for salt and alkali resistance to avoid seed waste.

[0043] like Figures 7 - 12As shown in the figure, the adjusting component 6 further includes a driving circular gear 62 fixed on an output shaft of the double-headed motor 61. One side of the screening box 1 close to the fixing frame 4 is rotatably connected with a rotating shaft 63. The other end of the rotating shaft 63 is embedded with a first electric push rod 64, and the piston rod of the first electric push rod 64 is fixedly connected with a driven circular gear 65 that is used in cooperation with the driving circular gear 62. First, the double-headed motor 61 provides a unified driving source, saving the driving power cost. At the same time, the first electric push rod 64 adjusts the meshing stroke between the driven circular gear 65 and the driving circular gear 62. A bent arm 66 is fixedly connected to the rotating shaft 63. One side of the bent arm 66 away from the fixing frame 4 is rotatably connected with an electric cylinder 67 through a mounting member. Then, the driving circular gear 62 that is in place of meshing drives the bent arm 66 through the rotating shaft 63 on the driven circular gear 65 to achieve the left and right angle adjustment effect, and then the electric cylinder 67 realizes the height adjustment effect, meeting the azimuth adjustment requirements during the soaking and sterilization of pumpkin rootstock seeds;

[0044] One side of the screening box 1 close to the fixing frame 4 is fixedly connected with an arc-shaped slide rail 11, and the inner cavity of the arc-shaped slide rail 11 is slidably connected with a limit slide frame 12 that is fixedly matched with the bent arm 66, which plays a role in sliding and limiting the bent arm 66 and improves the angle adjustment stability of the bent arm 66. An angle sensor 13 is fixedly connected to the outer side of the bent arm 66 away from the limit slide frame 12 to monitor the adjustment angle of the bent arm 66 in real time to ensure that the angle adjustment of the bent arm 66 is in place. One side of the screening box 1 close to the arc-shaped slide rail 11 is fixedly connected with a positioning magnet 16, and an electromagnetic breaker 14 is fixedly connected to the outer side of the bent arm 66 close to the limit slide frame 12. An electromagnet 15 that is embedded and matched with the bent arm 66 is arranged on the electromagnetic breaker 14, and the positioning magnet 16 and the electromagnet 15 have opposite magnetic polarities, and the bent arm 66 at the initial and the position reaching the screening box 1 is subjected to electrified adsorption and positioning treatment;

[0045] The soaking component 7 includes brackets 71 fixed on both sides of the bottom of the piston rod of the electric cylinder 67, and breeding boxes 72 that are fixedly connected to the bottoms of the brackets 71 and are slidably matched with the screening box 1, the soaking box 2, and the sterilization box 3. Breeding grids 73 are opened on the four sides of the breeding box 72, and communication grooves 74 that are communicated and matched with the breeding grids 73 are opened on the four sides of the inner cavity of the breeding box 72. After the electric cylinder 67 adjusts the height of the breeding box 72 with the adjusted angle through the brackets 71, the soaking liquid and the sterilization liquid in the soaking box 2 and the sterilization box 3 respectively reach the areas of the pumpkin rootstock seedlings or seeds in the breeding grids 73 through the communication grooves 74, and the pumpkin rootstock seedlings or seeds inside are respectively subjected to soaking and sterilization treatments, improving the germination rate and success rate of the pumpkin rootstock seedlings or seeds;

[0046] The top of the breeding box 72 is snap-connected with an upper cover 75 used in cooperation with the breeding grid 73. Both sides of the bottom of the breeding box 72 are fixedly connected with guide rail edges 76. A lower sealing plate 77 is snap-connected inside the guide rail edges 76. The upper cover 75 and the two lower sealing plates 77 inside the guide rail edges 76 block the breeding box 72 from above and below to prevent the pumpkin rootstock seedling rods or seeds from floating during the soaking and sterilization treatments, so that they are confined in the breeding box 72 for sufficient soaking and sterilization treatments;

[0047] Guide rail strips 18 are fixedly connected to the four sides of the breeding box 72. Guide rail grooves 17 that are slidably matched with the guide rail strips 18 are opened on the four sides of the inner cavities of the screening box 1, the soaking box 2, and the sterilization box 3. They play a role of docking and limiting when the breeding box 72 descends with the screening box 1, the soaking box 2, and the sterilization box 3, so that the breeding box 72 can stably reach the inside of the screening box 1, the soaking box 2, and the sterilization box 3. The depths of the guide rail grooves 17 in the screening box 1, the soaking box 2, and the sterilization box 3 are the same, ensuring that the saline-alkali solution, soaking solution, and sterilization solution in the screening box 1, the soaking box 2, and the sterilization box 3 can fully contact the pumpkin rootstock seedling rods or seeds in the breeding box 72;

[0048] The breeding grids 73 are distributed in an array along the central axis of the breeding box 72. Small holes that are communicated and matched with the breeding grids 73 are opened around the upper cover 75 and the lower sealing plate 77, facilitating the saline-alkali solution, soaking solution, and sterilization solution in the screening box 1, the soaking box 2, and the sterilization box 3 to pass through the small holes to reach the area of the pumpkin rootstock seedling rods or seeds inside them, which is beneficial to the soaking, sterilization, and saline-alkali tolerance screening of the pumpkin rootstock seedling rods or seeds. The diameters of the breeding grids 73 are sequentially increased from top to bottom. The center of the top of the upper cover 75 is fixedly connected with a pinch ear, and a pinch groove is opened on the outer side of the lower sealing plate 77, which are respectively convenient for pulling and opening the upper cover 75 and the lower sealing plate 77.

[0049] The supply assembly 8 includes a main synchronous wheel 81 fixed to the output shaft of the double-headed motor 61 near the driving circular gear 62. The outer side of the main synchronous wheel 81 is connected with a secondary synchronous wheel 82 that is rotatably matched with the sealing frame 5 through a synchronous belt. A exhaust fan 83 is fixedly connected to the inner cavity of the secondary synchronous wheel 82 through a fan shaft. The main synchronous wheel 81 drives the exhaust fans 83 on the two secondary synchronous wheels 82 to rotate synchronously in the two sealing frames 5 through the synchronous belt, and generates wind pressure in the two sealing frames 5. The outer side of the sealing frame 5 is communicated with a wind collecting head 84. The outer end of the wind collecting head 84 is communicated with a primary pressurizing pipe 85. The other end of the primary pressurizing pipe 85 is communicated with a three-way valve 86. Then, the primary pressurizing pipes 85 on the two wind collecting heads 84 are supplied into the two three-way valves 86 to complete the supply and transportation of the wind pressure;

[0050] The germination accelerating assembly 9 includes an aeration head 91 connected to the inner end of the three-way valve 86 and unidirectionally connected to the bottoms of the seed soaking tank 2 and the sterilization tank 3 respectively. The wind pressure and wind force fed into the two three-way valves 86 reach the seed soaking tank 2 and the sterilization tank 3 respectively through the two aeration heads 91, and aeration treatment is carried out on the seed soaking liquid and the sterilization liquid in the seed soaking tank 2 and the sterilization tank 3, so that the seed soaking liquid and the sterilization liquid are in full contact with the pumpkin rootstock seedling rods or seeds in the breeding box 72 after they arrive, further improving the high germination rate of the pumpkin rootstock seedling rods or seeds. One end of the three-way valve 86 is embedded with a pressure sensor 92, the other end of the three-way valve 86 is connected to a secondary pressure pipe 93, and the inner end of the secondary pressure pipe 93 is connected to a four-way valve 94. While the two pressure sensors 92 monitor the wind pressure in the two three-way valves 86 in real time, the wind pressure and wind force are centrally fed into the four-way valve 94 through the two secondary pressure pipes 93. The top of the four-way valve 94 is unidirectionally connected to a small-scale cold and heat integrated machine 95 fixedly matched with the screening box 1, and the front end of the four-way valve 94 is connected to an air supply pipe 96 unidirectionally connected to the screening box 1. The small-scale cold and heat integrated machine 95 provides a cold source or a heat source supply to the four-way valve 94. Then, according to the current environmental requirements, the cold source or heat source in the four-way valve 94 is fed into the screening box 1 through the air supply pipe 96 to cool down and heat up the saline-alkali liquid therein, so that the pumpkin rootstock seedling rods or seeds grow at a suitable temperature, accelerating their germination rate and further increasing the success rate of the pumpkin rootstock seedling rods or seeds in the saline-alkali liquid environment.

[0051] Such as Figure 13 - Figure 14As shown in the figure, during the screening of the salt and alkali tolerance of pumpkin rootstock seedlings or seeds, it is mostly necessary to pour the presoaking solution, sterilizing solution, and salt and alkali solution prepared elsewhere into the presoaking tank 2, sterilizing tank 3, and screening tank 1 respectively, which cannot achieve the convenient and fast effect of on-site preparation and on-site use, wasting the transfer time. A mixing component 10 that is driven in cooperation with the double-headed motor 61 is provided in each of the presoaking tank 2, sterilizing tank 3, and screening tank 1. The mixing component 10 includes a second electric push rod 101 embedded in the other output shaft of the double-headed motor 61. The piston rod of the second electric push rod 101 is fixedly connected with a driving bevel gear 102. A driven bevel gear 103 is arranged above one side of the driving bevel gear 102. First, the second electric push rod 101 adjusts the meshing stroke of the driving bevel gear 102 and the driven bevel gear 103. The inner cavity of the driven bevel gear 103 is fixedly connected with a main mixing frame 104 that is rotatably matched with the bottom of the screening tank 1. Then, the double-headed motor 61 drives the main mixing frame 104 on the driven bevel gear 103 to rotate at the bottom of the inner cavity of the screening tank 1 through the engaged driving bevel gear 102, so as to stir and prepare the salt and alkali solution raw material added into the screening tank 1. Both sides of the driven bevel gear 103 are meshed with a bevel gear frame 105. The outer side of the bevel gear frame 105 is meshed with a differential bevel gear 106. The inner cavity of the differential bevel gear 106 is fixedly connected with a secondary mixing frame 107 that is rotatably matched with the bottoms of the presoaking tank 2 and the sterilizing tank 3. At the same time, the driven bevel gear 103 drives the two bevel gear frames 105 to rotate. The two bevel gear frames 105 drive the secondary mixing frames 107 on the two groups of differential bevel gears 106 to rotate in the presoaking tank 2 and the sterilizing tank 3 respectively, so as to stir and prepare the presoaking solution raw material and the sterilizing solution raw material added into the presoaking tank 2 and the sterilizing tank 3, achieving the convenient and fast effect of on-site preparation and on-site use, saving time and effort.

[0052] Working principle of a salt and alkali tolerant rootstock screening device for pumpkins: First, pour saline-alkali solution raw materials, seed soaking solution raw materials, and sterilizing solution raw materials into the screening box 1, seed soaking box 2, and sterilizing box 3 respectively, and add nutrient solution raw materials to the screening box 1. After controlling the second electric push rod 101 to start and drive the driving bevel gear 102 to move forward and engage with the meshing part of the driven bevel gear 103, then control the double-headed motor 61 to start and drive the main mixing frame 104 on the driven bevel gear 103 to rotate in the bottom space of the inner cavity of the screening box 1 through the engaged driving bevel gear 102, so as to stir the saline-alkali solution raw materials and nutrient solution poured into the screening box 1 to prepare a saline-alkali solution with nutrient solution. At the same time, the driven bevel gear 103 drives the two bevel gear frames 105 to rotate accordingly, and the two bevel gear frames 105 drive the auxiliary mixing frames 107 on the two differential bevel gears 106 to rotate in the bottom spaces of the inner cavities of the seed soaking box 2 and the sterilizing box 3, so as to stir the seed soaking solution raw materials and sterilizing solution raw materials poured into the seed soaking box 2 and the sterilizing box 3 respectively, and prepare a seed soaking solution and a sterilizing solution in the seed soaking box 2 and the sterilizing box 3 respectively. After the saline-alkali solution, seed soaking solution, and sterilizing solution are prepared in the screening box 1, seed soaking box 2, and sterilizing box 3 respectively, and the saline-alkali solution in the screening box 1 is mixed with nutrient solution, first control the double-headed motor 61 to pause, and then control the second electric push rod 101 to close and drive the driving bevel gear 102 to move backward to disengage from the meshing part of the driven bevel gear 103 to the initial position;

[0053] Immediately afterwards, first control the first electric push rod 64 to start and drive the driven circular gear 65 to move forward and engage with the meshing part of the driving circular gear 62. Then, control the double-headed motor 61 to start and drive the rotating shaft 63 on the driven circular gear 65 to rotate linearly through the engaged driving circular gear 62. The arc-shaped slide rail 11 and the limit slide frame 12 play a role in sliding and limiting the rotating shaft 63. And control the circuit breaker 14 to cut off the power supply to the electromagnet 15, so that the electromagnet 15 loses the electromagnetic adsorption force on the positioning magnet 16. Then, the rotating shaft 63 first drives the bent arm 66 to adjust the angle towards the seed soaking box 2, and the angle sensor 13 monitors the adjustment angle of the bent arm 66 in real time. After the electric cylinder 67 on the bent arm 66 and the breeding box 72 on the support 71 reach directly above the seed soaking box 2, since the bent arm 66 is rotatably connected to the electric cylinder 67 through the mounting part, after the breeding box 72 reaching directly above the seed soaking box 2 automatically balances according to its own weight, then control the electric cylinder 67 to start and drive the breeding box 72 to move down into the seed soaking box 2 through the support 71, and make the pumpkin rootstock seedling rods or seeds placed in advance in the breeding grid 73 immerse in the seed soaking liquid in the seed soaking box 2. And the seed soaking liquid reaches the area of the pumpkin rootstock seedling rods or seeds in the breeding grid 73 through the intercommunication groove 74 and fully immerses and soaks them. After the pumpkin rootstock seedling rods or seeds immersed in the seed soaking liquid in the seed soaking box 2 are soaked, similarly, move the pumpkin rootstock seedling rods or seeds in the soaked breeding box 72 into the sterilization box 3, and the sterilization liquid in the sterilization box 3 sterilizes the soaked pumpkin rootstock seedling rods or seeds. After the soaking and sterilization of the pumpkin rootstock seedling rods or seeds are both completed, reset to directly above the screening box 1 and pause, and remove the upper cover 75. After retaining the two lower cover plates 77 in the guide rail edge 76, then move the pumpkin rootstock seedling rods or seeds in the breeding box 72 after soaking and sterilization into the screening box 1, and make the saline-alkali solution with nutrient solution in it submerge two-thirds of the breeding box 72. First, control the double-headed motor 61 to pause, then control the first electric push rod 64 to close and drive the driven circular gear 65 to move backward and disengage from the meshing part of the driving circular gear 62 to the initial position. And under the nourishment of the nutrient solution, the pumpkin rootstock seedling rods or seeds in the breeding box 72 germinate and grow in the saline-alkali solution in the screening box 1;

[0054] During the period when the pumpkin rootstock seedling rods or seeds successively reach the saline-alkali solution, soaking solution, and sterilizing solution in the screening box 1, soaking box 2, and sterilizing box 3, the double-headed motor 61 drives the main synchronous wheel 81 to rotate. The main synchronous wheel 81 drives the exhaust fans 83 on the two sets of secondary synchronous wheels 82 to rotate synchronously within the two sets of sealing frames 5 through the synchronous belt. After generating wind pressure and wind force within the two sets of sealing frames 5, it is pressurized by the primary pressurizing pipes 85 on the two sets of air collecting heads 84 and then supplied into the two sets of three-way valves 86. Then, the two sets of three-way valves 86 supply the soaking solution and sterilizing solution in the soaking box 2 and sterilizing box 3 into the soaking solution and sterilizing solution in the soaking box 2 and sterilizing box 3 respectively through the two sets of aeration heads 91, and aerate the soaking solution and sterilizing solution in the soaking box 2 and sterilizing box 3, so that the soaking solution and sterilizing solution with aeration disturbance can successively make full contact with the in-place pumpkin rootstock seedling rods or seeds, completing the effective soaking and sterilizing treatment of the pumpkin rootstock seedling rods or seeds. At the same time, while the two sets of pressure sensors 92 monitor the wind pressure in the two sets of three-way valves 86 in real time, the wind pressure in the two sets of three-way valves 86 is pressurized again through two secondary pressurizing pipes 93 and then centrally supplied into the four-way valve 94. At the same time, the small-scale cold and heat integrated machine 95 is controlled in advance to start and provide a cold source or heat source supply according to the current ambient temperature requirements. Moreover, the cold source or heat source provided in the small-scale cold and heat integrated machine 95 is also supplied into the four-way valve 94 and merged with the wind pressure to form a pressurized cold source or heat source. Finally, it is supplied into the saline-alkali solution with nutrient solution in the screening box 1 through the aeration pipe 96 to make it aerated and disturbed, and while making full contact with and absorbing the pumpkin rootstock seedling rods or seeds, it also conducts cooling or heating treatment on them, so that the saline-alkali solution with nutrient solution in the screening box 1 always maintains a suitable growth temperature for the pumpkin rootstock seedling rods or seeds. Under the nourishment of the nutrient solution, the pumpkin rootstock seedling rods or seeds are germinated to accelerate their growth rate. After the pumpkin rootstock seedling rods or seeds germinate and grow, calculate their survival rate, and then the saline-alkali tolerance screening result of the current pumpkin rootstock seedling rods or seeds can be known.

[0055] It should be noted that the specific model specifications of the double-headed motor 61, electric push rod, electric cylinder 67, and small-scale cold and heat integrated machine 95 need to be selected and determined according to the actual specifications of the device. The specific selection calculation method adopts the existing technology in this field, so it will not be elaborated in detail.

[0056] The power supply circuits of the double-headed motor 61, electric push rod, electric cylinder 67, small-scale cold and heat integrated machine 95, and various valves and sensors are clear to those skilled in the art and will not be elaborated here.

[0057] It will be understood that the present invention is described by way of some embodiments, and those skilled in the art will know that various changes or equivalent substitutions can be made to these features and embodiments without departing from the spirit and scope of the present invention. Additionally, under the teaching of the present invention, these features and embodiments can be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application belong to the scope protected by the present invention.

Claims

1. A screening device for salt-alkali tolerant pumpkin rootstocks, comprising a screening box (1), characterized in that: The left side of the screening box (1) is fixedly connected to a seed soaking box (2), and the right side of the screening box (1) is fixedly connected to a sterilization box (3); The back of the screening box (1) is fixedly connected to a fixing frame (4), and sealing frames (5) are fixedly connected to both sides of the fixing frame (4). An adjusting component (6) and a seed soaking component (7) for soaking and disinfecting pumpkin rootstocks are respectively arranged on the fixing frame (4), and the adjusting component (6) includes a double-headed motor (61) fixed between the screening box (1) and the fixing frame (4); A supply component (8) and a germination accelerating component (9) for temperature control of air exposure of the screening box (1), the seed soaking box (2), and the sterilization box (3) are arranged on the sealing frame (5). An arc-shaped slide rail (11) is fixedly connected to one side of the screening box (1) close to the fixing frame (4), and a limiting slide frame (12) fixedly matched with a bent arm (66) is slidably connected to the inner cavity of the arc-shaped slide rail (11). An angle sensor (13) is fixedly connected to the outer side of the bent arm (66) far from the limiting slide frame (12). Stirring components (10) driven in cooperation with the double-headed motor (61) are arranged in the seed soaking box (2), the sterilization box (3), and the screening box (1). The stirring component (10) includes a second electric push rod (101) embedded in the other output shaft of the double-headed motor (61). The piston rod of the second electric push rod (101) is fixedly connected to a driving bevel gear (102), and a driven bevel gear (103) is arranged above one side of the driving bevel gear (102). A main stirring frame (104) rotatably matched with the bottom of the screening box (1) is fixedly connected to the inner cavity of the driven bevel gear (103). Bevel gear frames (105) are meshed on both sides of the driven bevel gear (103). A differential bevel gear (106) is meshed on the outer side of the bevel gear frame (105). A secondary stirring frame (107) rotatably matched with the bottoms of the seed soaking box (2) and the sterilization box (3) is fixedly connected to the inner cavity of the differential bevel gear (106).

2. The screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks according to claim 1, wherein: The adjusting component (6) further includes a driving circular gear (62) fixed on one output shaft of the double-headed motor (61). A rotating shaft (63) is rotatably connected to one side of the screening box (1) close to the fixing frame (4). A first electric push rod (64) is embedded in the other end of the rotating shaft (63). The piston rod of the first electric push rod (64) is fixedly connected to a driven circular gear (65) used in cooperation with the driving circular gear (62). A bent arm (66) is fixedly connected to the rotating shaft (63). An electric cylinder (67) is rotatably connected to the outer side of the bent arm (66) far from the fixing frame (4) through a mounting member.

3. The screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks according to claim 2, characterized in that: The seed soaking component (7) includes brackets (71) fixed to both sides of the bottom of the piston rod of the electric cylinder (67), and a breeding box (72) fixedly connected to the bottom of the brackets (71) and slidingly engaged with the screening box (1), the seed soaking box (2), and the sterilization box (3). Breeding grids (73) are provided on all four sides of the breeding box (72), and communication slots (74) communicating with the breeding grids (73) are provided on all four sides of the inner cavity of the breeding box (72). An upper cover (75) used in cooperation with the breeding grids (73) is snap-connected to the top of the breeding box (72), and guide rail edges (76) are fixedly connected to both sides of the bottom of the breeding box (72). A lower sealing plate (77) is snap-connected inside the guide rail edges (76).

4. The screening device for salt-alkali tolerant pumpkin rootstocks according to claim 3, characterized in that: The supply component (8) includes a main synchronous pulley (81) fixed to the output shaft of the double-headed motor (61) near the driving circular gear (62), and a secondary synchronous pulley (82) rotatably engaged with the sealing frame (5) is connected to the outside of the main synchronous pulley (81) through a synchronous belt. An exhaust fan (83) is fixedly connected to the inner cavity of the secondary synchronous pulley (82) through a fan shaft, and an air collecting head (84) is communicated with the outside of the sealing frame (5). The outer end of the air collecting head (84) is communicated with a primary pressure pipe (85), and the other end of the primary pressure pipe (85) is communicated with a three-way valve (86).

5. The screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks according to claim 4, wherein: The germination promoting component (9) includes an aeration head (91) communicated with the inner end of the three-way valve (86) and unidirectionally communicated with the bottoms of the seed soaking box (2) and the sterilization box (3) respectively. A pressure sensor (92) is embedded at one end of the three-way valve (86). The other end of the three-way valve (86) is communicated with a secondary pressure pipe (93), and the inner end of the secondary pressure pipe (93) is communicated with a four-way valve (94). The top of the four-way valve (94) is unidirectionally communicated with a small-scale cooling and heating integrated machine (95) fixedly engaged with the screening box (1), and the front end of the four-way valve (94) is communicated with an air supply pipe (96) unidirectionally communicated with the screening box (1).

6. The screening device for salt-alkali tolerant pumpkin rootstocks according to claim 5, characterized in that: A positioning magnet (16) is fixedly connected to one side of the screening box (1) close to the arc-shaped slide rail (11), and a circuit breaker (14) is fixedly connected to the outside of the bent arm (66) close to the limit slide frame (12). An electromagnet (15) engaged with the bent arm (66) is provided on the circuit breaker (14), and the positioning magnet (16) and the electromagnet (15) have opposite magnetic polarities.

7. The screening device for salt-alkali tolerant pumpkin rootstocks according to claim 6, characterized in that: Guide rail strips (18) are fixedly connected to all four sides of the breeding box (72), and guide rail grooves (17) slidingly engaged with the guide rail strips (18) are provided on all four sides of the inner cavities of the screening box (1), the seed soaking box (2), and the sterilization box (3). The depths of the guide rail grooves (17) in the screening box (1), the seed soaking box (2), and the sterilization box (3) are the same.

8. A screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks according to claim 7, characterized in that: The breeding grids (73) are distributed in an array along the central axis of the breeding box (72), and small holes communicating with the breeding grids (73) are provided on all four sides of the upper cover (75) and the lower sealing plate (77).

9. The screening device for salt-tolerant and alkali-tolerant pumpkin rootstocks according to claim 8, characterized in that: The diameters of the breeding grids (73) are sequentially increased from top to bottom. A pinch ear is fixedly connected to the center of the top of the upper cover (75), and a pinch groove is provided on the outside of the lower sealing plate (77).

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