Double-cone dryer for resin production

Abstract

The application relates to the technical field of drying equipment, in particular to a double-cone dryer for resin production, which at least comprises a rack and a tank assembly, a vacuum hard pipe is arranged in the tank assembly, and a vacuum filter cartridge is arranged at the inner end of the vacuum hard pipe. Locking plugs are uniformly distributed on the outer wall of the inner end of the vacuum hard pipe. The vacuum filter cartridge comprises a filter cartridge body, a sealing assembly and a locking assembly. The filter cartridge body comprises a filter cartridge shell, a left chamber and a right chamber. The sealing assembly comprises a rotating outer part, a sliding inner part and a main sealing ring. The locking assembly comprises a reset push ring and a reset compression spring. The double-cone dryer for resin production can filter the front end of a vacuum pumping system through the vacuum filter cartridge, and the vacuum filter cartridge can be conveniently installed and dismounted. The double-cone dryer for resin production has simple dismounting and mounting operation of the vacuum filter cartridge, and only needs to be pushed and rotated to realize the operation.

Description

Technical Field

[0001] This application relates to the field of drying equipment technology, specifically to a double cone dryer for resin production. Background Technology

[0002] The double-cone dryer is a widely used conductive heat transfer type vacuum drying equipment in resin production. Its core advantages lie in low-temperature drying, closed operation, and uniform mixing, making it particularly suitable for drying heat-sensitive and easily oxidized materials such as resins. Its structure includes at least a frame, a double-cone tank, a vacuum system, and a transmission system. To prevent resin powder from entering the vacuum system with solvent vapor, which could cause wear on the vacuum pump and blockage in the pipes, a vacuum filter cartridge is required at the front end of the vacuum system. However, the installation and disassembly of existing vacuum filter cartridges are cumbersome, requiring the tightening of multiple bolt pairs. Therefore, a simple-to-operate, securely fixed vacuum filter cartridge and a double-cone dryer incorporating these features are needed. Summary of the Invention

[0003] A double cone dryer for resin production includes at least a frame and a tank assembly, wherein a vacuum tube is inserted into the tank assembly and a vacuum filter cartridge is provided at the inner end of the vacuum tube;

[0004] Locking plugs are evenly distributed around the inner end of the outer wall of the vacuum tube.

[0005] The vacuum filter cartridge includes a filter cartridge body, a sealing assembly, and a locking assembly.

[0006] The filter cartridge body includes a filter cartridge shell, a left chamber, and a right chamber. The filter cartridge shell includes a perforated cylinder, a transition bend located below the perforated cylinder, a connecting straight pipe located to the right of the transition bend, and a large-diameter horizontal pipe located to the right of the connecting straight pipe. The left chamber includes a sealing left ring located on the left side of the inner wall of the large-diameter horizontal pipe and a limiting left ring located to the right of the sealing left ring. The outer wall of the large-diameter horizontal pipe is also provided with a left ring groove between the sealing left ring and the limiting left ring. The inner wall of the left ring groove is circumferentially distributed with connecting through holes, and the connecting through holes are provided with axial transverse... The rod has anti-rotation keys evenly distributed circumferentially on the inner wall of the left limiting ring; the right chamber includes a central ring groove in the middle of the outer wall of the large-diameter horizontal tube, axial blind holes evenly distributed circumferentially on the inner wall of the central ring groove, an axial through hole on the right side of the axial blind hole, and an enlarged right cavity at the right end of the large-diameter horizontal tube that communicates with the axial through hole. The inner wall of the enlarged right cavity is provided with a right limiting ring, and the inner wall of the right limiting ring is evenly distributed circumferentially with through shaft holes. The left side of the inner wall of the right limiting ring is also evenly distributed with locking blind holes that correspond one-to-one with the through shaft holes. The locking blind holes are engaged with locking plugs.

[0007] The sealing assembly is disposed in the left-side chamber and is sealed to the left end of the vacuum tube. The sealing assembly includes a rotating outer ring, a sliding inner ring, and a main sealing ring. The rotating outer ring includes a rotatable outer ring gear disposed in the left-side ring groove, a rotatable intermediate gear disposed on the axial crossbar and meshing with the outer ring gear, and a rotatable inner ring gear disposed between the sealing left ring and the limiting left ring and meshing with the intermediate gear. The inner ring gear has an external threaded hole on its inner wall. The sliding inner ring includes a slidable sliding tube disposed in the limiting left ring, a sliding retaining ring disposed at the left end of the outer wall of the sliding tube, and a slidable secondary sealing ring disposed on the outer wall of the sliding tube. The secondary sealing ring is located between the sliding retaining ring and the limiting left ring. The right side of the outer wall of the sliding tube is also provided with an external threaded tube that meshes with the external threaded hole. The outer wall of the external threaded tube is circumferentially distributed with anti-rotation shaft holes that mate with anti-rotation keys. The right side of the sliding tube is also provided with an abutment right ring. The main sealing ring is disposed to the right of the abutment right ring.

[0008] The locking assembly is disposed in the right-side cavity and fixes the locking plug in the locking blind hole. The locking assembly includes a reset push ring disposed on the left side of the widened right cavity and abutting against the locking plug, and a reset spring disposed on the left side of the reset push ring. The locking assembly also includes an adjustment assembly, which includes a rotatable internal threaded ring disposed in the central ring groove, an adjustment push ring disposed on the left side of the widened right cavity at the reset spring, axial connecting rods circumferentially distributed on the left side of the adjustment push ring and inserted into the axial through holes one by one, and a follower block disposed on the left side of the axial connecting rod and inserted into the axial blind hole. The outer wall of the follower block is provided with an external thread that is screwed to the internal threaded ring.

[0009] As a further embodiment, the left side of the inner wall of the main sealing ring is also provided with a fixing flange that can be inserted into the inner wall of the sliding round tube.

[0010] As a further implementation, the outer wall of the vacuum tube is also provided with a tube protrusion ring that mates with the widened right cavity.

[0011] The beneficial effects of this invention are:

[0012] The present invention discloses a double cone dryer for resin production, which can perform front-end filtration of the vacuum system through a vacuum filter cartridge, and the vacuum filter cartridge can be easily installed and disassembled.

[0013] The double-cone dryer for resin production described in this invention features a simple vacuum filter cartridge assembly and disassembly operation, requiring only a "push and turn" to achieve quick and stable installation and removal.

[0014] "One push" means pushing the vacuum filter cartridge to initially insert it into the vacuum tube;

[0015] "One turn" refers to rotating the vacuum filter cylinder so that the locking plug is locked and fixed by the locking blind hole.

[0016] The double-cone dryer for resin production described in this invention can also adjust the thrust of the locking assembly on the locking plug:

[0017] Rotating the internal threaded ring causes it to act on the follower block, thereby driving the axial connecting rod and the adjusting push ring to move axially.

[0018] Adjust the compression and pressure of the reset spring under normal conditions, and adjust the squeezing stress of the reset push ring on the locking plug. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of one embodiment of the double cone dryer.

[0021] Figure 2 This is a partial cross-sectional view of one embodiment of the double cone dryer and vacuum filter cartridge.

[0022] Figure 3 This is a cross-sectional view of one embodiment of the vacuum filter cartridge.

[0023] Figure 4 This is an isometric sectional view of the vacuum filter cartridge in its first state.

[0024] Figure 5 This is an isometric sectional view of the vacuum filter cartridge in its second state.

[0025] Figure 6 This is a schematic diagram of one embodiment of the filter cylinder.

[0026] Figure 7 This is a partial isometric sectional view of one embodiment of the filter cylinder.

[0027] Figure 8 This is a schematic diagram of one embodiment of the sealing assembly.

[0028] Figure 9 This is an isometric sectional view of one embodiment of the sealing assembly.

[0029] Figure 10 This is a schematic diagram of one embodiment of the locking assembly.

[0030] Figure 11 This is a partial cross-sectional view of one embodiment of the adjustment component.

[0031] Figure 12 This is a schematic diagram of one embodiment of the vacuum rigid tube.

[0032] Figure 13 This is an isometric sectional view of one embodiment of the vacuum tube.

[0033] The numbers in the diagram are as follows:

[0034] 9. Frame; 91. Tank assembly; 93. Vacuum tube; 94. Vacuum filter cartridge; 931. Tube protrusion ring;

[0035] 1. Locking plug;

[0036] 2. Filter cylinder;

[0037] 21. Filter cartridge shell; 211. Perforated cylinder; 212. Transition bend; 213. Connecting straight pipe; 214. Large-diameter horizontal pipe;

[0038] 22. Left-side chamber; 221. Left sealing ring; 222. Left limiting ring; 223. Left-side ring groove; 224. Connecting through hole; 225. Axial crossbar; 226. Anti-rotation key.

[0039] 23. Right-side chamber; 231. Central annular groove; 232. Axial blind hole; 233. Axial through hole; 234. Widened right cavity; 235. Right limiting ring; 236. Through shaft hole; 237. Locking blind hole;

[0040] 3. Sealing components;

[0041] 31. Rotate the outside; 311. Outer ring gear; 312. Intermediate gear; 313. Inner ring gear; 314. External threaded hole;

[0042] 32. Sliding interior; 321. Sliding round tube; 322. Sliding retaining ring; 323. Secondary sealing ring; 324. Externally threaded tube; 325. Anti-rotation shaft hole; 326. Right abutment ring.

[0043] 33. Main sealing ring; 331. Fixed flange;

[0044] 4. Locking assembly;

[0045] 41. Reset push ring;

[0046] 42. Return spring;

[0047] 43. Adjustment component; 431. Internal threaded ring; 432. Adjustment push ring; 433. Axial connecting rod; 434. Follower block. Detailed Implementation

[0048] A double cone dryer for resin production includes at least a frame 91 and a tank assembly 92, wherein a vacuum tube 93 is inserted into the tank assembly 92, and a vacuum filter cartridge 94 is provided at the inner end of the vacuum tube 93.

[0049] Locking plugs 1 are evenly distributed around the inner end of the outer wall of the vacuum tube 93.

[0050] The vacuum filter cartridge 94 includes a filter cartridge body 2, a sealing assembly 3, and a locking assembly 4.

[0051] The filter cartridge body 2 includes a filter cartridge shell 21, a left chamber 22, and a right chamber 23. The filter cartridge shell 21 includes a perforated cylinder 211, a transition bend 212 located below the perforated cylinder 211, a connecting straight pipe 213 located to the right of the transition bend 212, and a large-diameter horizontal pipe 214 located to the right of the connecting straight pipe 213. The left chamber 22 includes a sealing left ring 221 located on the left side of the inner wall of the large-diameter horizontal pipe 214 and a limiting left ring 222 located to the right of the sealing left ring 221. The outer wall of the large-diameter horizontal pipe 214 is also provided with a left ring groove 223 between the sealing left ring 221 and the limiting left ring 222. The inner wall of the left ring groove 223 is circumferentially distributed with connecting through holes 224, and the connecting through holes 224 are provided with axial... The crossbar 225 has anti-rotation keys 226 evenly distributed around the inner wall of the limiting left ring 222; the right chamber 23 includes a central ring groove 231 located in the middle of the outer wall of the large-diameter horizontal tube 214, axial blind holes 232 evenly distributed around the inner wall of the central ring groove 231, an axial through hole 233 located to the right of the axial blind hole 232, and an enlarged right chamber 234 located at the right end of the large-diameter horizontal tube 214 and communicating with the axial through hole 233. The inner wall of the enlarged right chamber 234 is provided with a limiting right ring 235. The inner wall of the limiting right ring 235 has through shaft holes 236 evenly distributed around the inner wall. The left side of the inner wall of the limiting right ring 235 also has locking blind holes 237 that correspond one-to-one with the through shaft holes 236. The locking blind holes 237 are plugged into the locking plug 1.

[0052] The sealing assembly 3 is disposed in the left chamber 22 and is sealed to the left end of the vacuum tube 93. The sealing assembly 3 includes a rotating outer ring 31, a sliding inner ring 32, and a main sealing ring 33. The rotating outer ring 31 includes an outer ring gear 311 rotatably disposed in the left ring groove 223, an intermediate gear 312 rotatably disposed on the axial crossbar 225 and meshing with the outer ring gear 311, and an inner ring gear 313 rotatably disposed between the sealing left ring 221 and the limiting left ring 222 and meshing with the intermediate gear 312. The inner ring gear 313 has an external threaded hole 314 on its inner wall. The sliding inner ring 32 includes... The sliding round tube 321 is slidably disposed within the limiting left ring 222; a sliding retaining ring 322 is disposed at the left end of the outer wall of the sliding round tube 321; and a secondary sealing ring 323 is slidably disposed on the outer wall of the sliding round tube 321. The secondary sealing ring 323 is located between the sliding retaining ring 322 and the limiting left ring 222. The outer wall of the sliding round tube 321 is also provided with an external threaded tube 324 that engages with the external threaded hole 314. The outer wall of the external threaded tube 324 is circumferentially distributed with anti-rotation shaft holes 325 that cooperate with the anti-rotation key 226. The right side of the sliding round tube 321 is also provided with an abutting right ring 326. The main sealing ring 33 is disposed to the right of the abutting right ring 326.

[0053] The locking assembly 4 is disposed in the right-side chamber 23. The locking assembly 4 fixes the locking plug 1 in the locking blind hole 237. The locking assembly 4 includes a reset push ring 41 disposed on the left side of the widened right chamber 234 and abutting against the locking plug 1, and a reset spring 42 disposed on the left side of the reset push ring 41. The locking assembly 4 also includes an adjustment component 43. The adjustment component 43 includes an internally threaded ring 431 rotatably disposed in the central ring groove 231, an adjustment push ring 432 slidably disposed on the left side of the widened right chamber 234 at the reset spring 42, axial connecting rods 433 circumferentially distributed on the left side of the adjustment push ring 432 and inserted into the axial through holes 233 one by one, and a follower plug 434 disposed on the left side of the axial connecting rod 433 and inserted into the axial blind hole 232. The outer wall of the follower plug 434 is provided with an external thread that is screwed into the internally threaded ring 431.

[0054] As a further implementation, the left side of the inner wall of the main sealing ring 33 is also provided with a fixing flange 331 that is inserted into the inner wall of the sliding round tube 321.

[0055] As a further implementation, the outer wall of the vacuum tube 93 is also provided with a tube protrusion ring 931 that is inserted and fitted into the widened right cavity 234.

[0056] The double-cone dryer for resin production described in this case employs a quick-assembly and disassembly vacuum filter cartridge 94, which can be quickly installed and disassembled through the manhole of the tank assembly 91. Taking the installation process as an example, it specifically includes the following steps:

[0057] S1, Initial fixation:

[0058] Refer to the instruction manual appendix Figure 4 , 5 As shown:

[0059] The vacuum filter cartridge 94 is inserted into the tank assembly 91 through the manhole;

[0060] Align the widened right cavity 234 with the vacuum tube 93 and then push it to the right, making sure that the through shaft hole 236 is aligned with the locking plug 1;

[0061] The through shaft hole 236 passes through the locking plug 1, and the reset push ring 41 and reset spring 42 are squeezed by the locking plug 1 and thus contract to store force.

[0062] Rotate the vacuum filter cylinder 94 to align the locking blind hole 237 with the locking plug 1, and the reset spring 42 presses the reset push ring 41 and the locking plug 1 to slide to the right into the locking blind hole 237 to complete the fixation;

[0063] It should be added that the movement trajectory of the locking plug 1 within the right-side chamber 23 is as shown in the attached instruction manual. Figure 7 The bolded line 'm' indicates this.

[0064] S2, to achieve a seal:

[0065] Rotate the outer ring gear 311;

[0066] The outer ring gear 311 drives the inner ring gear 313 and the external threaded hole 314 to rotate through the intermediate gear 312.

[0067] The external threaded hole 314 acts on the external threaded tube 324, thereby driving the sliding interior 32 and the main sealing ring 33 to move to the right.

[0068] The sliding retaining ring 322 and the sealing left ring 221 compress and deform the secondary sealing ring 323, thereby achieving a seal between the sliding round tube 321 and the connecting straight tube 213.

[0069] The right-side ring 326 presses the main sealing ring 33 to the right so that it is tightly attached to the left end of the vacuum tube 93, thereby achieving a seal between the sliding round tube 321 and the vacuum tube 93.

[0070] Finally, the airflow passes through the sealed channel of the perforated cylinder 211, the transition bend 212, the connecting straight pipe 213, the sliding circular pipe 321, the main sealing ring 33, and the vacuum hard pipe 93 before connecting to the vacuum system to achieve vacuuming.

[0071] It should be noted that step S3 is also included, adjusting the thrust of the locking assembly 4 to the locking plug 1:

[0072] Rotating the internal threaded ring 431 causes the internal threaded ring 431 to act on the follower insert 434, thereby driving the axial connecting rod 433 and the adjusting push ring 432 to move axially.

[0073] Adjust the compression and pressure of the reset spring 42 under normal conditions, thereby adjusting the squeezing stress of the reset push ring 41 on the locking plug 1.

Claims

1. A double-cone dryer for resin production, comprising at least a frame (91) and a tank assembly (92), characterized in that: A vacuum tube (93) is inserted into the tank assembly (92), and a vacuum filter cylinder (94) is provided at the inner end of the vacuum tube (93). Locking plugs (1) are evenly distributed around the inner end of the outer wall of the vacuum tube (93). The vacuum filter cartridge (94) includes a filter cartridge body (2), a sealing assembly (3), and a locking assembly (4); The filter cartridge (2) includes a filter cartridge shell (21), a left chamber (22), and a right chamber (23); The filter cartridge housing (21) includes a perforated cylinder (211), a transition bend (212) disposed below the perforated cylinder (211), a connecting straight pipe (213) disposed to the right of the transition bend (212), and a large-diameter horizontal pipe (214) disposed to the right of the connecting straight pipe (213). The left-side chamber (22) includes a sealing left ring (221) on the left side of the inner wall of the large-diameter horizontal tube (214) and a limiting left ring (222) on the right side of the sealing left ring (221). The outer wall of the large-diameter horizontal tube (214) between the sealing left ring (221) and the limiting left ring (222) is also provided with a left-side ring groove (223). The inner wall of the left-side ring groove (223) is circumferentially distributed with connecting through holes (224). An axial crossbar (225) is provided in the connecting through hole (224). The inner wall of the limiting left ring (222) is circumferentially distributed with anti-rotation keys (226). The right-side chamber (23) includes a central annular groove (231) located in the middle of the outer wall of the large-diameter horizontal tube (214), axial blind holes (232) evenly distributed around the inner wall of the central annular groove (231), an axial through hole (233) located to the right of the axial blind hole (232), and an enlarged right cavity (234) located at the right end of the large-diameter horizontal tube (214) and communicating with the axial through hole (233). The inner wall of the enlarged right cavity (234) is provided with a limiting right ring (235). The inner wall of the limiting right ring (235) is evenly distributed around the circumference with through shaft holes (236). The left side of the inner wall of the limiting right ring (235) is also evenly distributed around the circumference with locking blind holes (237) corresponding to the through shaft holes (236). The locking blind holes (237) are plugged into the locking plug (1). The sealing assembly (3) is disposed in the left chamber (22), and the sealing assembly (3) is sealed to the left end of the vacuum tube (93); The locking assembly (4) is located in the right-side chamber (23) and the locking assembly (4) fixes the locking plug (1) in the locking blind hole (237).

2. The double-cone dryer for resin production according to claim 1, characterized in that: The sealing assembly (3) includes a rotating outer part (31), a sliding inner part (32), and a main sealing ring (33); The rotating outer part (31) includes an outer ring gear (311) rotatably disposed in the left ring groove (223), an intermediate gear (312) rotatably disposed on the axial crossbar (225) and meshing with the outer ring gear (311), and an inner ring gear (313) rotatably disposed between the sealing left ring (221) and the limiting left ring (222) and meshing with the intermediate gear (312). The inner ring gear (313) has an external threaded hole (314) on its inner wall. The sliding interior (32) includes a sliding round tube (321) slidably disposed within the limiting left ring (222), a sliding retaining ring (322) disposed at the left end of the outer wall of the sliding round tube (321), and a slidably disposed secondary sealing ring (323) disposed on the outer wall of the sliding round tube (321). The secondary sealing ring (323) is located between the sliding retaining ring (322) and the limiting left ring (222). The right side of the outer wall of the sliding round tube (321) is also provided with an external threaded tube (324) that meshes with the external threaded hole (314). The outer wall of the external threaded tube (324) is circumferentially distributed with anti-rotation shaft holes (325) that cooperate with the anti-rotation key (226). The right side of the sliding round tube (321) is also provided with an abutting right ring (326). The main sealing ring (33) is located on the right side of the abutting right ring (326); The locking assembly (4) includes a reset push ring (41) located on the left side of the widened right cavity (234) and abutting against the locking plug (1), and a reset spring (42) located on the left side of the reset push ring (41).

3. The double-cone dryer for resin production according to claim 2, characterized in that: The locking assembly (4) further includes an adjustment component (43), which includes a rotatable internal threaded ring (431) disposed in the central annular groove (231), and a slidable adjustment push ring (432) disposed on the left side of the widened right cavity (234) and the reset spring (42), an axial connecting rod (433) circumferentially distributed on the left side of the adjustment push ring (432) and inserted into the axial through hole (233) one by one, and a follower plug (434) disposed on the left side of the axial connecting rod (433) and inserted into the axial blind hole (232). The outer wall of the follower plug (434) is provided with an external thread that is screwed into the internal threaded ring (431).

4. The double-cone dryer for resin production according to claim 3, characterized in that: The left side of the inner wall of the main sealing ring (33) is also provided with a fixed protrusion (331) that is inserted into the inner wall of the sliding round tube (321).

5. A double-cone dryer for resin production according to claim 4, characterized in that: The outer wall of the vacuum tube (93) is also provided with a tube protrusion ring (931) that is inserted into the widened right cavity (234).

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