Nitrogen drying, filtering and washing reaction kettle for solid-phase synthesis

Abstract

The invention belongs to the technical field of nitrogen drying reaction kettles, particularly relates to a nitrogen drying, filtering and washing reaction kettle for solid-phase synthesis, and aims to solve the problem that in the prior art, after nitrogen is introduced into a kettle body, air cannot be efficiently exhausted, the following scheme is provided: the nitrogen drying, filtering and washing reaction kettle comprises the kettle body, and the whole kettle body is of a cylindrical structure internally provided with a cavity; a charging hole is formed in the top, close to the circumferential edge, of the kettle body, a matched sealing cover is arranged at the charging hole, a one-way air leakage hole is formed in the middle of the sealing cover, a stepped abutting hole is formed in the bottom, close to the circumferential edge, of the kettle body, and a filtering mechanism is arranged at the bottom, close to the stepped abutting hole, of the kettle body; the filtering mechanism comprises an inner abutting sliding barrel which is provided with a downward opening and is of a barrel-shaped structure on the whole. Nitrogen can be directly injected into materials before reaction, namely, the inner wall of the kettle body is close to the bottom end, and at the moment, most of air can be extruded out along with rotation of the transmission pipe, so that the drying effect on the internal materials is improved.

Description

Technical Field

[0001] The invention relates to the technical field of nitrogen drying reactors, in particular to a nitrogen drying, filtering and washing reactor for solid phase synthesis. Background Art

[0002] Nitrogen drying reactors have emerged to address the stringent environmental requirements of some chemical reactions, particularly their sensitivity to oxygen and moisture. Currently, in many chemical syntheses or catalytic reactions, reactions between reactants and oxygen or moisture in the air can lead to side reactions, reducing product purity and yield. Therefore, the development of nitrogen drying reactors has become a crucial technical approach to improving reaction efficiency, ensuring product quality, and protecting equipment and materials.

[0003] After searching, it was found that the nitrogen drying reactor in the prior art simply introduces nitrogen into the interior of the reactor body, and only some air near the top of the reactor body is discharged, and the gas mixed in the middle of the material still remains inside the reactor body. Therefore, to address this situation of incomplete exhaust, we propose a new type of nitrogen drying reactor for solid phase synthesis. Summary of the Invention

[0004] In view of the technical problem in the prior art that the air cannot be efficiently discharged after nitrogen is introduced into the kettle, the present invention adopts the following technical solution:

[0005] A nitrogen drying, filtering and washing reactor for solid-phase synthesis comprises a reactor body, wherein the reactor body is in the form of a cylindrical structure with a cavity therein, and a feeding port is provided at the top of the reactor body near the circumferential edge, a matching sealing cover is provided at the feeding port, and a one-way air leakage hole is provided in the middle of the sealing cover, a stepped abutting hole is provided at the bottom of the reactor body near the circumferential edge, and a filtering mechanism is provided at the bottom of the reactor body near the stepped abutting hole, the filtering mechanism comprising an inner abutting slide barrel with an opening downward and an overall barrel-shaped structure, the bottom of the inner abutting slide barrel tightly blocks the bottom hole of the stepped abutting hole; and the inner A discharge valve is inserted into the bottom of the barrel that is pressed against the sliding barrel; a bearing mounting hole is opened in the middle of the top of the kettle body, and a bearing group is embedded in the bearing mounting hole. A transmission pipe that extends vertically to the middle of the interior of the kettle body is rotatably connected to the bearing group, and an air inlet nozzle for connecting to a nitrogen pipe is provided at the top of the transmission pipe; an L-shaped stirring pipe is fixed to the bottom end of the transmission pipe, and a check valve is provided at the bottom end of the L-shaped stirring pipe. A rotary gear is fixed to the circumferential outer wall of the transmission pipe near the top, and a drive box for controlling the rotation of the rotary gear is provided on the side of the top outer wall of the kettle body near the rotary gear.

[0006] Preferably, the bearing group includes a sealed bearing embedded in the bearing mounting hole, and the inner ring of the sealed bearing is embedded with an anti-slip rubber ring; to ensure that the interior of the kettle body can still remain sealed at this point when the transmission tube rotates, the rotation speed of the transmission tube is slow, and it is only necessary to spray the gas evenly to the interior of the kettle body near each circumferential edge, so the sealed bearing and the anti-slip rubber ring are sufficient to ensure the sealing of the kettle body; a sealing ring is embedded near the top of the circumferential outer wall of the inner sliding barrel.

[0007] Preferably, a driving gear is fixed to the circumferential outer wall of the transmission tube near the top inner wall of the kettle body, and an annular slide rail concentric with the driving gear is fixed to the top inner wall of the kettle body, an annular tooth is rotatably connected in the slide groove of the annular slide rail, and three planetary gears symmetrically distributed in the center are arranged between the annular tooth and the driving gear; two grooved slide rails with downward openings and symmetrical distribution in the center are fixed to the lower surface of the annular slide rail, and rectangular sliders are slidably connected in the grooved slide rails, and a reverse stirring rod extending vertically downward is fixed to the lower surface of the rectangular slider, and a return spring is fixed to the side of the two rectangular sliders close to the transmission tube, and a spring baffle is fixed to the end of the return spring, and the spring baffle is fixed to the bottom of the groove of the grooved slide rail on that side.

[0008] Preferably, the L-shaped stirring tube includes a vertical tube and a horizontal tube, and the vertical tube of the L-shaped stirring tube is fixedly sleeved on the bottom end of the transmission tube, and the outer circumferential wall of the horizontal tube of the L-shaped stirring tube is fixed with an inclined flap; it can increase the flipping amplitude of the material, thereby making the contact between the material and the gas more uniform.

[0009] Preferably, the bottom of the kettle body is arranged in a horizontal state, and the circumferential edge of the bottom of the kettle body is rounded; this makes it difficult for residues to accumulate near the bottom corners of the interior of the kettle body and easier to clean.

[0010] Preferably, a pressure measuring device is provided at the top edge of the kettle body near the front, and a gap is left between the pressure measuring device and the circumferential outer wall of the annular slide rail; the pressure measuring device extending into the kettle body does not affect the rotation of the reverse stirring rod.

[0011] The top end of the inner tube is provided with a circle, and the top end of the fixing frame is provided with a circle, and the fixing frame comprises a fixing outer tube which is fixed to the bottom surface of the fixing body and is coaxial with the stepped tightening hole. The inner diameter of the fixing outer tube is larger than the diameter of the bottom hole of the stepped tightening hole, and the circumferential outer wall of the fixing outer tube is reserved near the top end of the fixing outer tube, and the flange ring is fixed to the bottom of the fixing body by screws; the circumferential inner wall of the fixing outer tube is reserved with a raised retaining ring 1 near the bottom end, and the circumferential inner wall of the retaining ring 1 is slidably connected to the intermediate tube tube, and the circumferential outer wall of the intermediate tube tube is reserved near the top end for pressing with the retaining ring 1, the inner diameter of the intermediate tube tube is the same as the inner diameter of the bottom hole of the stepped tightening hole; and the circumferential inner wall of the intermediate tube tube is reserved near the bottom end for retaining ring 3, wherein the circumferential outer wall of the inner tightening sliding barrel is slidably connected to the retaining ring 3, the top end of the inner tightening sliding barrel is set to a downwardly concave shape, and a filter screen is fixed in the top hole of the stepped tightening hole.

[0012] Preferably, three outwardly extending spring support blocks are fixed to the bottom end of the intermediate tube, and a return spring is fixed between the upper surface of the spring support block and the bottom of the kettle body; a support column extending vertically downward is fixed in the middle of the lower surface of the kettle body, and the bottom end of the support column is rotatably connected to a driving gear rod with a "question mark" structure, and the driving gear rod includes an arc-shaped rack and a handle rod extending toward the center of rotation, and a rack top rod extending vertically downward and meshing with the driving gear rod is fixed at the bottom of the inner sliding barrel; and a notch matching the thickness of the driving gear rod is opened at the bottom of the inner sliding barrel; when the telescopic frame needs to be expanded, it is only necessary to lift the handle rod upward; the rotating surface of the driving gear rod passes through the center line of the fixed outer tube and the kettle body at the same time.

[0013] Preferably, a discharge baffle is fixed to the bottom end of the inner pressing slide barrel between the rack top rod and the discharge valve, and a guide groove is fixed to the side of the discharge baffle by bolts, which can directly guide the liquid discharged from the discharge valve to the material receiving position.

[0014] Preferably, a groove is formed on the end of the handle rod of the driving gear rod away from the arc-shaped rack, and a spring hook is fixed to the end of the handle rod, and a hook fixing block is fixed to the end of the bottom end of the kettle body away from the step tightening hole; when no material is discharged, a heavy object can be hung on the groove to ensure that the top of the inner tightening slide barrel is tightly against the bottom of the step tightening hole.

[0015] The beneficial effects of the present invention are:

[0016] 1. By setting up an L-shaped transmission pipe and an L-shaped stirring pipe extending into the interior of the kettle near the bottom, nitrogen can be directly injected into the middle of the material before the reaction, that is, the inner wall of the kettle near the bottom. At this time, most of the air can be squeezed out with the rotation of the transmission pipe to improve the drying effect of the internal material.

[0017] 2. By setting up a reverse stirring rod driven by a planetary gear and coordinating with the setting of a reset spring, the two reverse stirring rods and the L-shaped stirring tube at the bottom can form a reverse disturbance during ventilation and drying, thereby increasing the turning effect of the material and making the contact between the gas and the material more uniform.

[0018] 3. By setting the telescopic frame and filter screen plate, after the materials in the kettle are synthesized, the inner sliding barrel can be pulled down, and then the telescopic frame can be expanded, which increases the internal space of the kettle. At this time, the reacted materials can be filtered, and the filtered liquid can be discharged from the discharge valve at the bottom of the inner sliding barrel, and the remaining solids can be poured out from the feeding port. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0020] Figure 2 is a side view of the present invention;

[0021] Figure 3 For the present invention Figure 2 Schematic diagram of the cross-sectional structure along line AA;

[0022] Figure 4 For the present invention Figure 3 Schematic diagram of the enlarged structure at B in the middle;

[0023] Figure 5 This is a schematic diagram of the structure of the present invention during discharging;

[0024] Figure 6 This is a schematic diagram of the half-section structure of the present invention during discharging;

[0025] Figure 7 This is an exploded view of the telescopic frame of the present invention;

[0026] Figure 8 This is a schematic diagram of the semi-cut three-dimensional structure of the kettle body in the present invention;

[0027] Figure 9 Schematic diagram of the three-dimensional structure of the driving gear rod in the present invention;

[0028] Figure 10 It is a schematic diagram of the half-section structure of the inner tightening sliding barrel in the present invention.

[0029] In the figure: 1. kettle body; 101. hook fixing block; 102. stepped abutment hole; 103. bearing mounting hole; 2. drive box; 3. air inlet nozzle; 4. rotary gear; 5. feeding port; 6. support column; 7. drive gear rod; 701. groove; 8. rack push rod; 9. discharge baffle; 10. inner abutment slide barrel; 1001. notch; 1002. sealing ring; 11. intermediate barrel; 12. spring support block; 13. return spring; 14. flange ring; 15. fixed outer tube; 16. transmission tube; 161. L-shaped stirring tube; 162. check valve; 163. inclined flap; 17. filter screen; 18. discharge valve; 19. annular slide rail; 191. annular gear; 192. return spring; 193. grooved slide rail; 20. sealed bearing; 21. planetary gear; 22. reverse stirring rod. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0031] In this embodiment, refer to Figures 1-10 A nitrogen drying, filtering and washing reactor for solid-phase synthesis comprises a reactor body 1, which is a cylindrical structure with a cavity inside. A feeding port 5 is provided at the top of the reactor body 1 near the circumferential edge. A matching sealing cover is provided at the feeding port 5, and a one-way air leakage hole is provided in the middle of the sealing cover. A stepped abutting hole 102 is provided at the bottom of the reactor body 1 near the circumferential edge, and a filtering mechanism is provided at the bottom of the reactor body 1 near the stepped abutting hole 102. The filtering mechanism comprises an inner abutting slide barrel 10 with an opening downward and an overall barrel-shaped structure. The bottom of the inner abutting slide barrel 10 tightly blocks the bottom hole of the stepped abutting hole 102; and the inner abutting slide barrel 10 A discharge valve 18 is plugged into the bottom of the barrel; a bearing mounting hole 103 is opened in the middle of the top of the kettle body 1, and a bearing group is embedded in the bearing mounting hole 103. A transmission pipe 16 extending vertically to the middle of the interior of the kettle body 1 is rotatably connected to the bearing group. The top of the transmission pipe 16 is provided with an air inlet nozzle 3 for connecting to the nitrogen pipe; an L-shaped stirring pipe 161 is fixed to the bottom end of the transmission pipe 16, and a check valve 162 is provided at the bottom end of the L-shaped stirring pipe 161. A rotary gear 4 is fixed to the circumferential outer wall of the transmission pipe 16 near the top, and a drive box 2 for controlling the rotation of the rotary gear 4 is provided on the side of the top outer wall of the kettle body 1 near the rotary gear 4;

[0032] Specifically, by providing an L-shaped transmission tube 16 and an L-shaped stirring tube 161 extending into the interior of the kettle body 1 near the bottom, nitrogen can be directly injected into the middle of the material before the reaction, that is, the inner wall of the kettle body 1 near the bottom end. At this time, most of the air can be squeezed out with the rotation of the transmission tube 16 to improve the drying effect of the internal material.

[0033] In the present invention, the bearing group includes a sealed bearing 20 embedded in the bearing mounting hole 103, and the inner ring of the sealed bearing 20 is embedded with an anti-slip rubber ring; ensuring that the interior of the kettle body 1 can still maintain a sealed state at this point when the transmission tube 16 rotates, the rotation speed of the transmission tube 16 is slow, and it is only necessary to evenly spray the gas into the interior of the kettle body 1 near each circumferential edge, so the sealed bearing 20 and the anti-slip rubber ring are sufficient to ensure the sealing of the kettle body 1; a sealing ring 1002 is embedded near the top of the circumferential outer wall of the inner sliding barrel 10.

[0034] Reference Figure 3 、 Figure 4 、 Figure 6 The outer circumferential wall of the transmission tube 16 is fixed with a driving gear near the top inner wall of the kettle body 1, and the inner top wall of the kettle body 1 is fixed with an annular slide 19 concentric with the driving gear, and the slide groove of the annular slide 19 is rotatably connected with an annular tooth 191, and three planetary gears 21 are arranged between the annular tooth 191 and the driving gear; the lower surface of the annular slide 19 is fixed with two grooved slides 193 with downward openings and symmetrical distribution of the center, and the grooved slides 193 are slidably connected with rectangular sliders, and the lower surface of the rectangular slider is fixed with a vertically downward extending The reverse stirring rod 22 is extended, and the two rectangular sliders are fixed with a return spring 192 on one side close to the transmission tube 16, and the ends of the return springs 192 are fixed with spring baffles, which are fixed to the bottom of the groove-shaped slide rail 193 on the side; by setting the reverse stirring rod 22 driven by the planetary gear 21 and coordinating with the setting of the return spring 192, the two reverse stirring rods 22 and the L-shaped stirring tube 161 at the bottom can form a reverse disturbance during ventilation and drying, so as to increase the turning effect on the material, and then make the contact between the gas and the material more uniform.

[0035] Reference Figure 3 and Figure 6 The L-shaped stirring tube 161 includes a vertical tube and a horizontal tube, and the vertical tube of the L-shaped stirring tube 161 is fixedly sleeved on the bottom end of the transmission tube 16, and the outer circumferential wall of the horizontal tube of the L-shaped stirring tube 161 is fixed with an inclined flap 163; by setting the inclined flap 163 on the horizontal tube, the flipping amplitude of the material can be increased, thereby making the contact between the material and the gas more uniform.

[0036] Reference Figure 6 The bottom of the kettle body 1 is set in a horizontal state, and the bottom circumferential edge of the kettle body 1 is rounded; the interior of the kettle body 1 near the bottom corner is not prone to residue accumulation and is easier to clean.

[0037] In the present invention, a pressure measuring device is provided at the top edge of the kettle body 1 near the front, and a gap is left between the pressure measuring device and the circumferential outer wall of the annular slide rail 19; the pressure measuring device extending into the interior of the kettle body 1 does not affect the rotation of the reverse stirring rod 22.

[0038] Reference Figure 3 、 Figure 5 and Figure 6 The lower surface of the kettle body 1 is provided with a telescopic frame below the stepped tight hole 102, and the telescopic frame includes a fixed outer tube 15 fixed on the lower surface of the kettle body 1 and coaxial with the stepped tight hole 102. The inner diameter of the fixed outer tube 15 is larger than the diameter of the bottom hole of the stepped tight hole 102, and a flange ring 14 is reserved near the top of the circumferential outer wall of the fixed outer tube 15. The flange ring 14 is fixed to the bottom of the kettle body 1 by screws; a raised retaining ring 1 is reserved near the bottom end of the circumferential inner wall of the fixed outer tube 15, and the circumferential inner wall of the retaining ring 1 is slidably connected with the intermediate tube 11, and a retaining ring 2 is reserved near the top of the circumferential outer wall of the intermediate tube 11 for pressing with the retaining ring 1. The inner diameter of the intermediate tube 11 is the same as the bottom diameter of the stepped tight hole 102 The inner diameters of the holes are the same; and a retaining ring three is reserved near the bottom end of the circumferential inner wall of the intermediate tube 11, wherein the circumferential outer wall of the inner pressing slide barrel 10 is slidably connected to the retaining ring three, and the top end of the inner pressing slide barrel 10 is set to a downwardly concave shape, and a filter screen plate 17 is fixed in the top hole of the stepped pressing hole 102; through the provided telescopic frame and filter screen plate 17, after the material in the kettle body 1 is synthesized, the inner pressing slide barrel 10 can be pulled downward, and then the telescopic frame can be expanded, thereby increasing the internal space of the kettle body 1. At this time, the reacted material can be filtered, and the filtered liquid can be discharged from the discharge valve 18 at the bottom of the inner pressing slide barrel 10, and the remaining solid can be poured out from the feeding port 5.

[0039] Reference Figure 5-Figure 7 、 Figure 9-10 , three outward-extending spring support blocks 12 are fixed to the bottom end of the middle tube 11, and a return tension spring 13 is fixed between the upper surface of the spring support block 12 and the bottom of the kettle body 1; a support column 6 extending vertically downward is fixed in the middle of the lower surface of the kettle body 1, and the bottom end of the support column 6 is rotatably connected to a driving gear rod 7 with a "question mark" structure, and the driving gear rod 7 includes an arc-shaped rack and a handle rod extending toward the center of rotation, and a rack top rod 8 extending vertically downward and meshing with the driving gear rod 7 is fixed at the bottom of the inner slide barrel 10; and a notch 1001 is provided at the bottom end of the inner slide barrel 10 that is adapted to the thickness of the driving gear rod 7; when the telescopic frame needs to be expanded, only the handle rod needs to be lifted upward; the rotating surface of the driving gear rod 7 passes through the fixed outer tube 15 and the center line of the kettle body 1 at the same time.

[0040] Among them, a discharge baffle 9 is fixed to the bottom end of the inner tightening slide barrel 10 between the rack top rod 8 and the discharge valve 18, and a guide groove is fixed on the side of the discharge baffle 9 by bolts, which can directly guide the liquid discharged from the discharge valve 18 to the material receiving position.

[0041] Reference Figure 1 and Figure 9 A groove 701 is formed on the end of the handle rod of the driving gear rod 7 away from the arc-shaped rack, and a spring hook is fixed to the end of the handle rod, and a hook fixing block 101 is fixed to the end of the bottom end of the kettle body 1 away from the stepped tightening hole 102; when there is no material being discharged, a heavy object can be hung on the groove 701 to ensure that the top of the inner tightening slide barrel 10 is tightly against the bottom of the stepped tightening hole 102.

[0042] Working principle: When the device is in use, the raw materials and the required mixture are first added into the kettle body 1 from the feeding port 5, and then the sealing cover is closed; the nitrogen pipe is connected to the air inlet nozzle 3, and the drive box 2 is started at the same time to drive the transmission pipe 16 inside the kettle body 1 to rotate slowly and cyclically. At this time, by setting the transmission pipe 16 and L-shaped stirring pipe 161 extending into the interior of the kettle body 1 near the bottom and forming an L-shaped structure, nitrogen is directly injected into the middle of the material before the reaction, that is, the inner wall of the kettle body 1 near the bottom end. At this time, most of the air can be squeezed out with the rotation of the transmission pipe 16 to improve the drying effect of the internal material; at the same time, by setting a reverse stirring rod 22 driven by the planetary gear 21 and cooperating with the setting of the reset spring 192, the two reverse stirring rods 22 and the L-shaped stirring tube 161 at the bottom form a reverse disturbance to increase the turning effect of the material;

[0043] After the materials in the kettle body 1 are synthesized, the inner sliding barrel 10 is pulled downward, and then the telescopic frame is expanded, which increases the internal space of the kettle body 1. At this time, the reacted materials can be filtered, and the filtered liquid can be discharged from the discharge valve 18 at the bottom of the inner sliding barrel 10, and the remaining solids can be poured out from the feeding port 5.

[0044] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A nitrogen drying, filtering and washing reactor for solid phase synthesis, comprising a reactor body (1), wherein the reactor body (1) is a cylindrical structure with a cavity therein, and a feeding port (5) is provided at the top of the reactor body (1) near the circumferential edge, a matching sealing cover is provided at the feeding port (5), and a one-way air leakage hole is provided in the middle of the sealing cover, a stepped abutting hole (102) is provided at the bottom of the reactor body (1) near the circumferential edge, and a filtering mechanism is provided at the bottom of the reactor body (1) near the stepped abutting hole (102), and the filtering mechanism is provided, wherein: The filtering mechanism comprises an inner pressing slide barrel (10) with an opening downward and an overall barrel-shaped structure, wherein the bottom of the inner pressing slide barrel (10) tightly blocks the bottom hole of the stepped pressing hole (102); and a discharge valve (18) is plugged into the bottom of the inner pressing slide barrel (10); a bearing mounting hole (103) is opened in the middle of the top of the kettle body (1), and a bearing group is embedded in the bearing mounting hole (103), and the bearing group is rotatably connected to a vertically extending member extending toward the kettle body. (1) a transmission tube (16) in the middle of the interior; an L-shaped stirring tube (161) is fixed at the bottom end of the transmission tube (16), and a check valve (162) is provided at the bottom end of the L-shaped stirring tube (161); a rotary gear (4) is fixed on the circumferential outer wall of the transmission tube (16) near the top end, and a drive box (2) for controlling the rotation of the rotary gear (4) is provided on the side of the top outer wall of the kettle body (1) near the rotary gear (4).

2. A nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 1, characterized in that: The bearing assembly includes a sealed bearing (20) embedded in a bearing mounting hole (103), and an anti-slip rubber ring is embedded in the inner ring of the sealed bearing (20); a sealing ring (1002) is embedded near the top of the circumferential outer wall of the inner sliding barrel (10).

3. A nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 1, characterized in that: A driving gear is fixed on the circumferential outer wall of the transmission tube (16) near the top inner wall of the kettle body (1), and an annular slide rail (19) concentric with the driving gear is fixed on the top inner wall of the kettle body (1), and an annular tooth (191) is rotatably connected in the slide groove of the annular slide rail (19), and three planetary gears (21) are arranged between the annular tooth (191) and the driving gear in a centrally symmetrical manner; two grooved slide rails (193) with downward openings and centrally symmetrical distribution are fixed on the lower surface of the annular slide rail (19), and rectangular sliders are slidably connected in the grooved slide rails (193), and a reverse stirring rod (22) extending vertically downward is fixed on the lower surface of the rectangular sliders, and a return spring (192) is fixed on one side of the two rectangular sliders close to the transmission tube (16), and a spring baffle is fixed at the end of the return spring (192), and the spring baffle is fixed to the groove bottom of the grooved slide rail (193) on the side.

4. A nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 3, characterized in that: The L-shaped stirring tube (161) comprises a vertical tube and a horizontal tube, and the vertical tube of the L-shaped stirring tube (161) is fixedly sleeved on the bottom end of the transmission tube (16), and an inclined flap (163) is fixed on the circumferential outer wall of the horizontal tube of the L-shaped stirring tube (161).

5. The nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 1, characterized in that: The bottom of the kettle body (1) is arranged in a horizontal state, and the circumferential edge of the bottom of the kettle body (1) is rounded.

6. A nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 1, characterized in that: A pressure measuring device is provided at the top edge of the kettle body (1) near the front, and a gap is left between the pressure measuring device and the circumferential outer wall of the annular slide rail (19).

7. The nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 1, characterized in that: The lower surface of the kettle body (1) is provided with a telescopic frame below the stepped abutting hole (102), and the telescopic frame includes a fixed outer tube (15) fixed on the lower surface of the kettle body (1) and coaxial with the stepped abutting hole (102), the inner diameter of the fixed outer tube (15) is larger than the diameter of the bottom hole of the stepped abutting hole (102), and a flange ring (14) is reserved near the top of the circumferential outer wall of the fixed outer tube (15), and the flange ring (14) is fixed to the bottom of the kettle body (1) by screws; the circumferential inner wall of the fixed outer tube (15) is reserved near the bottom of the circumferential inner wall, and the retaining ring is The circumferential inner wall of the first cylinder is slidably connected to the intermediate cylinder (11), and the circumferential outer wall of the intermediate cylinder (11) is reserved near the top with a retaining ring 2 pressed with the retaining ring 1, and the inner diameter of the intermediate cylinder (11) is the same as the inner diameter of the bottom hole of the stepped tight hole (102); and the circumferential inner wall of the intermediate cylinder (11) is reserved near the bottom with a retaining ring 3, wherein the circumferential outer wall of the inner tight sliding barrel (10) is slidably connected to the retaining ring 3, the top of the inner tight sliding barrel (10) is set to a downwardly concave shape, and a filter screen plate (17) is fixed in the top hole of the stepped tight hole (102).

8. A nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 7, characterized in that: The bottom end of the intermediate tube (11) is fixed with three spring support blocks (12) extending outward, and a return tension spring (13) is fixed between the upper surface of the spring support block (12) and the bottom of the kettle body (1); a support column (6) extending vertically downward is fixed in the middle of the lower surface of the kettle body (1), and the bottom end of the support column (6) is rotatably connected to a driving gear rod (7) with a "question mark" structure, and the driving gear rod (7) includes an arc-shaped rack and a handle rod extending toward the rotation center, and a rack top rod (8) extending vertically downward and meshing with the driving gear rod (7) is fixed at the bottom of the inner pressing slide barrel (10); and a notch (1001) adapted to the thickness of the driving gear rod (7) is opened at the bottom end of the inner pressing slide barrel (10); when the telescopic frame needs to be unfolded, it is only necessary to lift the handle rod upward; the rotating surface of the driving gear rod (7) passes through the center line of the fixed outer tube (15) and the kettle body (1) at the same time.

9. A nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 8, characterized in that: A discharge baffle (9) is fixed to the bottom end of the inner pressing slide barrel (10) between the rack top rod (8) and the discharge valve (18), and a guide groove is fixed on the side of the discharge baffle (9) by bolts.

10. A nitrogen drying, filtering and washing reactor for solid phase synthesis according to claim 9, characterized in that: A groove (701) is formed on the end of the handle of the driving gear rod (7) away from the arc-shaped rack, and a spring hook is fixed to the end of the handle, and a hook fixing block (101) is fixed to the end of the bottom end of the kettle body (1) away from the stepped tightening hole (102).

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