A silicon carbide micro powder vacuum drying equipment

Abstract

The present invention relates to the field of micro powder vacuum drying, and in particular to a silicon carbide micro powder vacuum drying device, comprising a mounting cylinder, both ends of which are fixedly mounted on a support frame, the top of the mounting cylinder is fixedly connected to a hopper, the bottom of the mounting cylinder is provided with a discharge port, a stepper motor is mounted on the support frame, the output end of the stepper motor passes through the end face of the mounting cylinder and is driven and connected to a rotating barrel arranged inside the mounting cylinder, the outer surface of the rotating barrel is evenly fixedly mounted with a plurality of drying mechanisms along its circumference, and the plurality of drying mechanisms rotate and move to corresponding positions in sequence, thereby completing the processes of feeding, vacuuming, heating and drying, cooling, and unloading of silicon carbide micro powder. The present invention realizes the automatic and continuous operation of vacuum drying of silicon carbide micro powder, and significantly improves the production efficiency.

Description

Technical Field

[0001] The invention relates to the field of micro powder vacuum drying, in particular to silicon carbide micro powder vacuum drying equipment. Background Art

[0002] Vacuum drying equipment is a kind of equipment that dries materials in a vacuum environment. It reduces the boiling point of materials by reducing the air pressure, thereby achieving low-temperature rapid drying. Silicon carbide micropowder vacuum drying equipment is a vacuum equipment specially used for silicon carbide micropowder drying. Its working steps mainly include feeding, vacuuming, heating and drying, cooling, unloading and other steps.

[0003] During the vacuum drying process, the steps of adding, vacuuming, heating and drying, cooling, and unloading are completed separately and in sequence. As a result, the working process of the vacuum drying equipment is discontinuous and requires manual cooperation, resulting in very low efficiency of vacuum drying. Summary of the invention

[0004] In order to solve the aforementioned technical problems, the present invention provides a silicon carbide micropowder vacuum drying device, which realizes a periodic, automated and continuous vacuum drying process of silicon carbide micropowder by setting up multiple sets of circulating drying mechanisms, thereby solving the low efficiency problem caused by the use of traditional vacuum drying equipment. This is specifically achieved through the following technical solutions.

[0005] The present invention discloses a silicon carbide micropowder vacuum drying device, comprising a mounting cylinder, wherein the mounting cylinder is mounted on a support frame, a hopper is mounted on the top of the mounting cylinder, a discharge port is provided at the bottom of the mounting cylinder, a stepper motor is mounted on the support frame, an output end of the stepper motor passes through the mounting cylinder and is drivingly connected to a rotating barrel arranged in the mounting cylinder, and a plurality of drying mechanisms are mounted on the outer surface of the rotating barrel.

[0006] The drying mechanism includes a drying bin, which is fixed to the rotating barrel. A sealing cover is sealed in a through hole opened on the outside of the drying bin. The first end of a reset spring is fixed to both ends of the sealing cover. The second end of the reset spring is fixed to a limiting rod, and the limiting rod is fixed to the drying bin.

[0007] The rotating barrel is provided with a channel connected to the drying bin, a filter plate is installed in the channel, the channel is fixedly connected to a first pipe, a first set of connecting mechanisms is installed on the first pipe, and the first set of connecting mechanisms can be intermittently connected to the negative pressure pipe.

[0008] A temperature regulating part is installed outside the drying chamber, and the temperature regulating part includes a transmission pipe. Both ends of the transmission pipe are respectively connected to the second group of connecting mechanisms, and the second group of connecting mechanisms can be intermittently connected to the hot water pipe or the cold water pipe.

[0009] Preferably, the connection mechanism comprises a butt-joint tube, the butt-joint tube is sealingly and slidingly sleeved inside a butt joint, the butt joint is fixed to a compression spring, the compression spring is sleeved outside the butt-joint tube, and the compression spring is fixed to the butt-joint tube.

[0010] A plurality of through holes are provided on the side surface of one end of the docking joint away from the docking tube, and the through holes connect the inside and outside of the docking joint. A plurality of connecting plates are fixed inside the docking tube, and the connecting plates are fixed to the plugs. The plugs can overlap with the inner surface of the docking joint and completely block the through holes.

[0011] Preferably, the end of the docking joint away from the docking tube is slidably configured in an annular groove, the annular groove is coaxially opened on a circular ring, the circular ring is coaxially fixed to the inner surface of the mounting tube, a plurality of pits are opened inside the annular groove, the end of the docking joint away from the docking tube can be sealed and clamped in the pits, and the pits are fixedly connected to the delivery pipe through a check portion.

[0012] Preferably, the check portion includes a cut-off tube, which is fixed to the ring and communicated with the pit, the inner surface of the cut-off tube is fixed to the first end of the check spring, the second end of the check spring is fixedly connected to a cut-off ball, the cut-off ball can be sealingly overlapped with the connection between the cut-off tube and the ring, and the cut-off ball can abut against the end of the docking head away from the through hole.

[0013] Preferably, the transmission pipe is fixedly connected to the shunt pipe, the shunt pipe is fixedly connected to the connecting pipe, and a connecting mechanism is installed in the middle of the connecting pipe.

[0014] The structure composed of the diverter pipe, the connecting pipe and the connecting mechanism is symmetrically distributed about the center of the transmission pipe.

[0015] Preferably, a feeding part is installed under the hopper, and the feeding part includes a solenoid valve, which is fixedly connected to the hopper and the first channel. The first channel is slidably configured in the second channel, and the second channel can be configured between the gap between the sealing cover and the drying bin.

[0016] The side surface of the first channel is fixed to the first end of the electric telescopic rod, and the second end of the electric telescopic rod is fixed to the side surface of the second channel.

[0017] Preferably, driving blocks are fixed to both ends of the sealing cover respectively, the driving blocks are overlapped with the driving plate, the driving plate is fixedly connected to the output end of the electric cylinder, and the electric cylinder is installed inside the mounting tube.

[0018] Preferably, a motor is fixedly mounted on the end surface of the drying bin, the output end of the motor is coaxially fixed with a drive shaft, the drive shaft is rotatably mounted inside the drying bin, and a plurality of stirring plates are evenly fixed on the outer surface of the drive shaft along the circumferential direction.

[0019] Preferably, the first channel and the second channel are arranged obliquely, and they are inclined from top to bottom, from the end of the drying bin to the middle of the drying bin.

[0020] After adopting the above technical solution, the beneficial effects of the present invention are:

[0021] 1. The present invention adopts a plurality of drying mechanisms in the form of annular distribution, and uses a stepping motor to drive the intermittent rotation thereof, so as to realize the cyclic continuous operation of each drying mechanism, thereby realizing the continuous drying process of silicon carbide micropowder.

[0022] 2. By setting corresponding mechanisms in sequence at the intermittent pause positions of the drying mechanism, the silicon carbide micropowder drying process can realize the steps of feeding, vacuuming, heating and drying, cooling, unloading, etc. in sequence, satisfying its automated production process and greatly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a three-dimensional diagram of the vacuum drying equipment for silicon carbide micropowder;

[0025] Figure 2 for Figure 1 A partial cutaway diagram of

[0026] Figure 3 for Figure 2 A three-dimensional diagram of some of the components in the middle;

[0027] Figure 4 for Figure 3 Schematic diagram of disassembly of some parts;

[0028] Figure 5 It is a partial dissection schematic diagram of the drying mechanism;

[0029] Figure 6 It is a structural schematic diagram of the temperature adjustment part;

[0030] Figure 7 It is a structural schematic diagram of the feeding part;

[0031] Figure 8 is a partial cross-sectional view of the connecting mechanism;

[0032] Fig. 9 is a three-dimensional diagram of a switching mechanism;

[0033] Fig.10 It is a schematic diagram of the connection mechanism and the switching mechanism.

[0034] Description of reference numerals:

[0035] 101-installation barrel, 102-support frame, 103-hopper, 104-discharging port, 105-stepping motor, 106-rotating barrel;

[0036] 200-drying mechanism, 202-drying chamber, 203-sealing cover, 204-reset spring, 205-limiting rod, 206-driving block, 207-driving plate, 208-electric cylinder, 209-motor, 210-driving shaft, 211-stirring plate, 212-filter plate, 213-first pipeline;

[0037] 220-temperature adjustment part, 221-transmission pipe, 222-diversion pipe, 223-connecting pipe;

[0038] 230 - feeding part, 231 - solenoid valve, 232 - first channel, 233 - second channel, 234 - electric telescopic rod;

[0039] 300-connecting mechanism, 301-butt pipe, 302-butt joint, 303-compression spring, 304-through hole, 305-connecting plate, 306-plug;

[0040] 400 - switching mechanism, 401 - annular ring, 402 - annular groove, 403 - pit, 404 - delivery pipe;

[0041] 500-check part, 501-interceptor pipe, 502-check spring, 503-interceptor ball. DETAILED DESCRIPTION

[0042] The features and exemplary embodiments of various aspects of the present invention will be described in detail below. In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be understood that the specific embodiments described herein are only configured to explain the present invention and are not configured to limit the present invention. For those skilled in the art, the present invention can be implemented without some of these specific details. The description of the embodiments below is only for providing a better understanding of the present invention by showing examples of the present invention.

[0043] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the present invention. In the description of the present invention, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation, connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection or an indirect connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to the specific circumstances.

[0044] The embodiment of the present invention provides a silicon carbide powder vacuum drying device, see Figures 1 to 10 The silicon carbide micropowder vacuum drying equipment includes a mounting cylinder 101, both ends of which are fixedly mounted on a support frame 102 respectively, the support frame 102 is used to support and install the equipment, the top of the mounting cylinder 101 is fixedly connected to a hopper 103, the bottom of the mounting cylinder 101 is provided with a discharge port 104, a stepper motor 105 is mounted on the support frame 102, and the output end of the stepper motor 105 passes through the end surface of the mounting cylinder 101 and is driven and connected to a rotating barrel 106 arranged inside the mounting cylinder 101.

[0045] Several groups of drying mechanisms 200 are evenly and fixedly installed on the outer surface of the rotating barrel 106 along its circumference. When the stepper motor 105 drives the rotating barrel 106 to rotate intermittently, the positions of the several groups of drying mechanisms 200 are periodically changed. At the pause position of the drying mechanism 200, the steps of adding, vacuumizing, heating and drying, cooling, and unloading of silicon carbide micropowder are completed in sequence, thereby realizing a continuous and automated vacuum drying process of silicon carbide micropowder.

[0046] The present invention is provided with three sets of drying mechanisms 200, such as Figure 2 As shown, the first group of drying mechanisms 200 located at the top position is used to complete the step of adding silicon carbide micropowder, the second group of drying mechanisms 200 located at the lower left position is used to complete the steps of vacuuming and heating and drying, and the third group of drying mechanisms 200 located at the lower right position is used to complete the steps of cooling and unloading, and the rotating barrel 106 rotates in the directions of the first group, the second group, and the third group, and stops after each rotation of 120°.

[0047] For further explanation of this embodiment, see Figure 4 , Figure 5 The drying mechanism 200 includes a drying bin 202, which is fixedly connected to the outer surface of the rotating barrel 106 and is used to hold silicon carbide powder. A sealing cover 203 is sealed in a square hole opened on one side of the drying bin 202 away from the axis of the rotating barrel 106. The sealing cover 203 can completely block the drying bin 202 to isolate the drying bin 202 from the outside world, making it easier to evacuate the drying bin 202.

[0048] Restoration springs 204 are fixed to both ends of the sealing cover 203 , respectively. The restoring spring 204 is fixed to a limiting rod 205 , and the limiting rod 205 is fixed to the drying chamber 202 .

[0049] The return spring 204 is always in a compressed state, so that the sealing cover 203 always seals the drying chamber 202 without being affected by external forces.

[0050] A driving block 206 is fixed to each end of the sealing cover 203 on one side away from the axis of the rotating barrel 106 . The driving block 206 can overlap with the driving plate 207 . The driving plate 207 is fixedly connected to the output end of the electric cylinder 208 . The electric cylinder 208 is installed inside the mounting tube 101 .

[0051] Among them, electric cylinders 208 are respectively installed at the positions corresponding to the feeding and unloading of the drying mechanism 200. When it is necessary to feed the drying bin 202 or unload the materials in the drying bin 202, the electric cylinder 208 drives the driving plate 207 to overlap with the driving block 206, thereby driving the sealing cover 203 to move to the side away from the axis of the rotating barrel 106. At this time, the drying bin 202 is no longer in a sealed state, which is convenient for feeding the drying bin 202 or unloading the materials in the drying bin 202.

[0052] A motor 209 is fixedly installed on the end surface of the drying bin 202, and the output end of the motor 209 is coaxially fixed with a drive shaft 210. The drive shaft 210 is rotatably installed inside the drying bin 202. A plurality of stirring plates 211 are evenly fixed on the outer surface of the drive shaft 210 along the circumferential direction, which are used to complete the stirring and dispersion of the silicon carbide micropowder during the drying process, thereby conveniently and quickly achieving the drying of the silicon carbide micropowder.

[0053] A channel is provided on the outer surface of the rotating barrel 106 for connecting the interior of the rotating barrel 106 with the interior of the drying bin 202. A filter plate 212 is fixedly installed in the channel for preventing the silicon carbide powder in the drying bin 202 from entering the interior of the rotating barrel 106. The channel is fixedly connected to the first end of the first pipe 213. The second end of the first pipe 213 passes through the end of the rotating barrel 106 and is equipped with a first set of connecting mechanisms 300. The first set of connecting mechanisms 300 can be intermittently connected to the negative pressure pipe for achieving vacuum extraction in the drying bin 202.

[0054] For further explanation of the above mentioned enforcement power, see Figure 3 , Figure 4 , Figure 6A temperature regulating part 220 is fixedly installed on the outer surface of the drying bin 202, which is used to increase or decrease the temperature inside the drying bin 202. The temperature regulating part 220 includes a plurality of transmission pipes 221 evenly arranged along the length direction of the drying bin 202. Both ends of the transmission pipe 221 are fixedly connected to the shunt pipe 222 respectively, and the shunt pipe 222 is fixedly connected to the connecting pipe 223. A second group of connecting mechanisms 300 is installed in the middle of the connecting pipe 223. The second group of connecting mechanisms 300 can be intermittently connected to the hot water pipe or the cold water pipe to increase or decrease the temperature inside the drying bin 202.

[0055] Among them, the structure composed of the diversion pipe 222, the connecting pipe 223, and the second group of connecting mechanisms 300 is symmetrically distributed about the center of the transmission pipe 221. This structure facilitates the transportation of hot water or cold water in several transmission pipes 221, thereby smoothly achieving heating or cooling in the drying chamber 202.

[0056] As a further explanation of the above embodiments, see Figure 2 , Figure 7 A feeding portion 230 is installed directly below the hopper 103 , and the feeding portion 230 intermittently adds materials into the plurality of drying bins 202 .

[0057] The feeding part 230 includes a solenoid valve 231, a first end of the solenoid valve 231 is fixedly connected to the bottom of the hopper 103, a second end of the solenoid valve 231 is fixedly connected to the side of the first channel 232, the first channel 232 is slidably configured inside the second channel 233, and an end of the second channel 233 away from the solenoid valve 231 can be configured between the gap between the sealing cover 203 and the drying chamber 202.

[0058] The side surface of the first channel 232 is fixedly connected to the first end of the electric telescopic rod 234 , and the second end of the electric telescopic rod 234 is fixedly connected to the side surface of the second channel 233 .

[0059] Among them, the first channel 232 and the second channel 233 are arranged at an angle, and they are inclined from top to bottom, from the end of the drying bin 202 to the middle of the drying bin 202. On the one hand, it is convenient for the material in the hopper 103 to slide downward, and on the other hand, it is convenient for the second channel 233 to be configured between the gap between the drying bin 202 and the sealing cover 203, so as to realize the addition of materials in the drying bin 202.

[0060] In the above embodiment, when it is necessary to add materials into the drying bin 202, the electric cylinder 208 drives the sealing cover 203 to move in a direction away from the axis of the drying bin 202 through the driving plate 207. At this time, the electric telescopic rod 234 drives the second channel 233 to extend outward and is arranged between the gap between the drying bin 202 and the sealing cover 203. The solenoid valve 231 is opened, and the material in the hopper 103 slides smoothly into the drying bin 202 along the first channel 232 and the second channel 233, thereby realizing the addition of materials inside the drying bin 202.

[0061] After the material is added, the solenoid valve 231 is opened, and the electric telescopic rod 234 drives the second channel 233 to shrink. At this time, the second channel 233 shrinks and is no longer arranged between the gap between the drying bin 202 and the sealing cover 203. The electric cylinder 208 returns to its original position through the driving plate 207. At this time, the sealing cover 203 completes the sealing of the drying bin 202 under the elastic force of the return spring 204. After completing the above actions, the rotating barrel 106 drives the drying mechanism 200 to rotate to the next process position to complete the subsequent operation steps.

[0062] For further explanation of the above mentioned enforcement power, see Figure 8 The connecting mechanism 300 includes a butt joint 301, which is sealingly and slidingly sleeved inside a butt joint 302, and the butt joint 302 is fixed to a first end of a compression spring 303, and the compression spring 303 is sleeved outside the butt joint 301, and the second end of the compression spring 303 is fixed to the butt joint 301.

[0063] A plurality of through holes 304 are evenly opened along the circumferential direction on the side surface of one end of the docking joint 302 away from the docking tube 301, and the through holes 304 connect the inside and the outside of the docking joint 302. A plurality of connecting plates 305 are fixed inside the end of the docking tube 301 close to the docking joint 302, and the connecting plates 305 are fixed to the plugs 306. The plugs 306 can overlap with the inner surface of the docking joint 302 and completely block the through holes 304.

[0064] The butt joint pipe 301 of the first connection mechanism 300 is fixedly connected to the second end of the first pipeline 213 , and the butt joint pipe 301 of the second connection mechanism 300 is fixedly connected to the connection pipe 223 .

[0065] The present invention can realize intermittent on and off of the connecting mechanism 300 through the structure of the above embodiment. When the compression spring 303 is squeezed to make the docking tube 301 and the docking head 302 close to each other, the plug 306 completely blocks the through hole 304. At this time, the connecting mechanism 300 is in an off-circuit state. On the contrary, under the elastic force of the compression spring 303, the docking tube 301 and the docking head 302 move away from each other, and the plug 306 no longer completely blocks the through hole 304. At this time, the connecting mechanism 300 is in a passage state.

[0066] The above embodiment can timely complete the vacuuming of the drying chamber 202 and timely complete the temperature adjustment of the drying chamber 202 by the temperature adjustment unit 220 by switching the on and off states of the connection mechanism 300, thereby automatically completing the vacuum drying process of the silicon carbide micropowder.

[0067] For further explanation of the above mentioned enforcement power, see Figure 4 , Fig. 9 , Fig.10 The connecting mechanism 300 cooperates with the switching mechanism 400 to realize the switching of the on and off states of the connecting mechanism 300.

[0068] The switching mechanism 400 includes a circular ring 401, which is coaxially fixed on the inner surface of the mounting tube 101. An annular groove 402 is coaxially provided on one end face of the circular ring 401. The end of the docking joint 302 away from the docking tube 301 can be slidably arranged in the annular groove 402. A plurality of pits 403 are provided inside the annular groove 402 along the axial direction of the circular ring 401. The end of the docking joint 302 away from the docking tube 301 can be sealed and clamped in the pit 403. The pit 403 is fixedly connected to the delivery tube 404 through the check portion 500.

[0069] Among them, the switching mechanism 400 is coaxially provided with two groups, an inner group and an outer group. The inner group cooperates and docks with the first group of connecting mechanisms 300 to complete the vacuuming of the drying mechanism 200 and connect it with the outside world; the outer group cooperates and docks with the second group of connecting mechanisms 300 to complete the delivery of hot water or cold water to the temperature adjustment part 220, thereby realizing heating and cooling of the drying mechanism 200.

[0070] There are two pits 403 , the first pit 403 is opened at a position corresponding to the pause position of the vacuuming and heating drying steps of the drying mechanism 200 , and the second pit 403 is opened at a position corresponding to the pause position of the cooling and unloading steps of the drying mechanism 200 .

[0071] In the above structure of the present embodiment, when the docking joint 302 is slidably configured in the annular groove 402, the connecting mechanism 300 is in an open circuit state, and when the docking joint 302 is clamped in the pit 403, the connecting mechanism 300 is in a pass state. Therefore, according to the pause position of the drying mechanism 200, the opening position of the pit 403 is selected, so that when the drying mechanism 200 is paused, the connecting mechanism 300 located at its end is just sealed and docked with the pit 403 successfully, which facilitates the vacuuming in the drying chamber 202; in addition, the temperature regulating part 220 is connected to the hot water pipe or the cold water pipe, thereby realizing the adjustment of the temperature in the drying chamber 202.

[0072] The check portion 500 includes a shutoff tube 501, which is fixedly connected to the ring 401 and communicates with the pit 403. The inner surface of the shutoff tube 501 is fixedly connected to the first end of the check spring 502, and the second end of the check spring 502 is fixedly connected to the shutoff ball 503. The shutoff ball 503 can be sealed and overlapped with the connection between the shutoff tube 501 and the ring 401, and the shutoff ball 503 can abut against the end of the docking head 302 away from the through hole 304.

[0073] The function of the check portion 500 is to block the delivery pipe 404 when the docking joint 302 is not arranged in the pit 403 .

[0074] The elastic coefficient of the compression spring 303 is greater than the elastic coefficient of the check spring 502 , so when the docking joint 302 is clamped in the pit 403 , the docking joint 302 can push the intercepting ball 503 so that it no longer blocks the intercepting tube 501 .

[0075] When the docking joint 302 slides along the annular groove 402, the check portion 500 always blocks the delivery pipe 404. When the docking joint 302 is clamped in the pit 403, the docking joint 302 moves to the side away from the docking pipe 301 under the elastic force of the compression spring 303, and pushes the intercepting ball 503 and then squeezes the check spring 502, so that the intercepting ball 503 cannot completely block the connection between the intercepting pipe 501 and the ring 401. At this time, the intercepting pipe 501, the pit 403, the docking joint 302, and the docking pipe 301 are in a connected state, so that the vacuumization of the drying chamber 202 and the connection between the temperature regulating portion 220 and the hot water pipe or the cold water pipe can be smoothly achieved.

[0076] According to the embodiments of the present invention as described above, these embodiments do not describe all the details in detail, nor do they limit the invention to only specific embodiments. Obviously, many modifications and changes can be made based on the above description. This specification selects and describes these embodiments in detail in order to better explain the principles and practical applications of the present invention, so that technicians in the relevant technical field can make good use of the present invention and the modifications based on the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A silicon carbide powder vacuum drying equipment, characterized in that: The invention comprises a mounting cylinder (101), wherein the mounting cylinder (101) is mounted on a support frame (102), a hopper (103) is mounted on the top of the mounting cylinder (101), a discharge port (104) is provided at the bottom of the mounting cylinder (101), a stepping motor (105) is mounted on the support frame (102), an output end of the stepping motor (105) passes through the mounting cylinder (101) and is drivingly connected to a rotating cylinder (106) arranged in the mounting cylinder (101), and a plurality of drying mechanisms (200) are mounted on the outer surface of the rotating cylinder (106); The drying mechanism (200) comprises a drying bin (202), the drying bin (202) being fixed to the rotating barrel (106), a sealing cover (203) being sealed in a through hole provided on the outside of the drying bin (202), the first end of a return spring (204) being fixed to both ends of the sealing cover (203), the second end of the return spring (204) being fixed to a limiting rod (205), and the limiting rod (205) being fixed to the drying bin (202); The rotating barrel (106) is provided with a channel connected to the drying chamber (202), a filter plate (212) is installed in the channel, the channel is fixedly connected to the first pipe (213), a first group of connecting mechanisms (300) is installed on the first pipe (213), and the first group of connecting mechanisms (300) can be intermittently connected to the negative pressure pipe; A temperature regulating unit (220) is installed outside the drying chamber (202), the temperature regulating unit (220) comprising a transmission pipe (221), both ends of the transmission pipe (221) being respectively connected to a second group of connection mechanisms (300), and the second group of connection mechanisms (300) can be intermittently connected to a hot water pipe or a cold water pipe; The connecting mechanism (300) comprises a butt joint tube (301), the butt joint tube (301) is sealingly and slidably sleeved inside a butt joint (302), the butt joint (302) is fixed to a compression spring (303), the compression spring (303) is sleeved outside the butt joint tube (301), and the compression spring (303) is fixed to the butt joint tube (301); A plurality of through holes (304) are formed on a side surface of one end of the butt joint (302) away from the butt joint tube (301), the through holes (304) connecting the inside and outside of the butt joint (302), a plurality of connecting plates (305) are fixed inside the butt joint tube (301), the connecting plates (305) are fixed to a plug (306), and the plug (306) can overlap with the inner surface of the butt joint (302) and completely block the through holes (304); One end of the docking joint (302) away from the docking tube (301) is slidably arranged in the annular groove (402); the annular groove (402) is coaxially provided on the circular ring (401); the circular ring (401) is coaxially fixed to the inner surface of the mounting tube (101); a plurality of recesses (403) are provided inside the annular groove (402); one end of the docking joint (302) away from the docking tube (301) can be sealed and clamped in the recesses (403); the recesses (403) are fixedly connected to the delivery tube (404) via the check portion (500).

2. The silicon carbide micropowder vacuum drying equipment according to claim 1, characterized in that: The non-return portion (500) comprises a cut-off tube (501), the cut-off tube (501) being fixed to the circular ring (401) and communicating with the recess (403), the inner surface of the cut-off tube (501) being fixed to the first end of the non-return spring (502), the second end of the non-return spring (502) being fixedly connected to the cut-off ball (503), the cut-off ball (503) being able to be sealed and overlapped with the connection between the cut-off tube (501) and the circular ring (401), and the cut-off ball (503) being able to abut against an end of the docking head (302) away from the through hole (304).

3. The silicon carbide powder vacuum drying equipment according to claim 1, characterized in that: The transmission pipe (221) is fixedly connected to the flow dividing pipe (222), the flow dividing pipe (222) is fixedly connected to the connecting pipe (223), and a connecting mechanism (300) is installed in the middle of the connecting pipe (223); The structure composed of the flow dividing pipe (222), the connecting pipe (223), and the connecting mechanism (300) is symmetrically distributed about the center of the transmission pipe (221).

4. The silicon carbide powder vacuum drying equipment according to claim 1, characterized in that: A feeding portion (230) is installed below the hopper (103), the feeding portion (230) comprising a solenoid valve (231), the solenoid valve (231) being fixedly connected to the hopper (103), the solenoid valve (231) being fixedly connected to a first channel (232), the first channel (232) being slidably arranged in a second channel (233), and the second channel (233) being arranged between a gap between the sealing cover (203) and the drying chamber (202); The side surface of the first channel (232) is fixed to the first end of the electric telescopic rod (234), and the second end of the electric telescopic rod (234) is fixed to the side surface of the second channel (233).

5. The silicon carbide powder vacuum drying equipment according to claim 1, characterized in that: A driving block (206) is fixed to both ends of the sealing cover (203), the driving block (206) is overlapped with a driving plate (207), the driving plate (207) is fixedly connected to an output end of an electric cylinder (208), and the electric cylinder (208) is installed inside the installation tube (101).

6. The silicon carbide powder vacuum drying equipment according to claim 1, characterized in that: A motor (209) is fixedly mounted on the end surface of the drying bin (202); an output end of the motor (209) is coaxially fixed to a drive shaft (210); the drive shaft (210) is rotatably mounted inside the drying bin (202); and a plurality of stirring plates (211) are evenly fixed along the circumferential direction on the outer surface of the drive shaft (210).

7. The silicon carbide powder vacuum drying equipment according to claim 4, characterized in that: The first channel (232) and the second channel (233) are arranged at an inclination, and are inclined in a direction from top to bottom, from the end of the drying bin (202) to the middle of the drying bin (202).

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