阅读说明：本技术 一种精细化工生产用的真空干燥釜 (Vacuum drying kettle for fine chemical production ) 是由 张小芸 于 2021-07-09 设计创作，主要内容包括：一种精细化工生产用的真空干燥釜,包括釜体、电机减速机构、传带皮带、主动皮带轮、从动皮带轮、支撑板、支撑架、电磁阀、稳压电源、电加热管、电源开关、压力开关；还具有探测机构及温控机构、供电机构；电机减速机构、传带皮带、主动皮带轮、从动皮带轮、支撑板、支撑架、电磁阀、稳压电源、电加热管、电源开关、压力开关、探测机构、温控机构、供电机构和釜体安装在一起。本发明在相关机构作用下,能在工作时不断驱动釜体转动,从而保证了釜体内产品均匀受热,且由于没有相关部件位于釜体内,防止了由于产品附着整体设备工作时产生振动,并保证了釜体内有效容积,提高了工作效率。基于上述,所以本发明具有好的应用前景。(A vacuum drying kettle for fine chemical production comprises a kettle body, a motor reducing mechanism, a belt conveying belt, a driving belt pulley, a driven belt pulley, a supporting plate, a supporting frame, an electromagnetic valve, a voltage stabilizing power supply, an electric heating pipe, a power switch and a pressure switch; the device is also provided with a detection mechanism, a temperature control mechanism and a power supply mechanism; the electric kettle comprises a motor speed reducing mechanism, a belt conveying belt, a driving belt pulley, a driven belt pulley, a supporting plate, a supporting frame, an electromagnetic valve, a voltage stabilizing power supply, an electric heating pipe, a power switch, a pressure switch, a detection mechanism, a temperature control mechanism, a power supply mechanism and a kettle body which are arranged together. The invention can continuously drive the kettle body to rotate when in work under the action of the related mechanism, thereby ensuring that products in the kettle body are uniformly heated, and because no related part is positioned in the kettle body, the invention prevents the products from vibrating when attached to the whole equipment to work, ensures the effective volume in the kettle body and improves the working efficiency. Based on the above, the invention has good application prospect.)

1. A vacuum drying kettle for fine chemical production comprises a kettle body, a motor reducing mechanism, a belt conveying belt, a driving belt pulley, a driven belt pulley, a supporting plate, a supporting frame, an electromagnetic valve, a voltage stabilizing power supply, an electric heating pipe, a power switch and a pressure switch; it is characterized in that the device also comprises a detection mechanism, a temperature control mechanism and a power supply mechanism; at least five electromagnetic valves are arranged, one ends of the first electromagnetic valve and the second electromagnetic valve are respectively connected with the upper end and the lower end of the kettle body, and the other end of the first electromagnetic valve is provided with a feeding bin; the outer end of the kettle body is provided with two layers, the electric heating pipe is arranged between the inner layer and the outer layer of the outer end of the kettle body, and the third electromagnetic valve is arranged at the outer end of one side of the kettle body; one end of the fourth electromagnetic valve and one end of the pressure switch are arranged at the outer end of the other side of the kettle body; a driving shaft is arranged in the middle of the other side of the kettle body, a bearing seat is arranged in the middle of one side of the kettle body, and a hollow connecting shaft is arranged in a bearing inner ring of the bearing seat; the two support frames are respectively arranged on the left part and the right part of the support plate, one end of the driving shaft is rotatably arranged at the upper end of one support frame, one end of the connecting shaft is arranged at the upper end of the other support frame, one end of the fifth electromagnetic valve is connected with the other end of the connecting shaft, and the other end of the fifth electromagnetic valve is connected with an air inlet pipe of the vacuum pump; the driven belt pulley is arranged at the other end of the driving shaft, the motor reducing mechanism is arranged at the lower end of one side of the supporting plate, the driving belt pulley and a power output shaft of the motor reducing mechanism are arranged together, and the transmission belt is sleeved between the driving belt pulley and the outer side of the driven belt pulley; the power supply mechanism is arranged at the upper part of one of the support frames, and the detection mechanism is arranged at the middle part of one of the support frames and the outer lower end of the other side of the kettle body; the temperature control mechanism comprises a temperature control switch and a relay, the temperature control switch is arranged on the outer side of the kettle body, and the voltage-stabilized power supply, the relay and the power supply switch are arranged in the element box; the first power output end of the detection mechanism is electrically connected with one end of a pressure switch, the other end of the pressure switch is electrically connected with one power input end of a fourth electromagnetic valve, and the second power output end of the detection mechanism is electrically connected with a vacuum pump and one power input end of a fifth electromagnetic valve; and the power output end of the temperature control mechanism is electrically connected with the power input end of the electric heating pipe.

2. The vacuum drying kettle for fine chemical production according to claim 1, wherein the five electromagnetic valves are normally closed valve core electromagnetic valves.

3. The vacuum drying kettle for fine chemical production according to claim 1, wherein the regulated power supply is an AC-to-DC switching power supply module; the pressure switch is a normally open contact pressure switch. .

4. The vacuum drying kettle according to claim 1, wherein the detecting mechanism comprises a reed switch, a magnet and a trigger circuit, the trigger circuit is installed in the component box, one of the support frames is provided with a connecting rod, the magnet is installed at one side end of the connecting rod, the reed switch is installed at the lower end outside the other side of the kettle body, the reed switch and the magnet are spaced apart by a distance, and when the kettle body moves to the feeding bin and is located at the upper end, a movable contact and a static contact inside the reed switch are in a closed state.

5. The vacuum drying kettle for fine chemical production according to claim 1, wherein the trigger circuit of the detection mechanism comprises a resistor, a relay and an NPN triode, the resistor, the relay, the NPN triode and a reed switch are electrically connected, one end of the reed switch is connected with a positive power input end of the first relay and a control power input end, the other end of the reed switch is connected with one end of the resistor, the other end of the resistor is connected with a base of the NPN triode, a collector of the NPN triode is connected with a negative power input end of the first relay, a normally open contact end of the first relay is connected with a positive power input end of the second relay, and an emitter of the NPN triode is connected with a negative power input end of the second relay.

6. The vacuum drying kettle for fine chemical production according to claim 1, wherein water is filled between the inner layer and the outer layer of the middle part of the kettle body.

7. The vacuum drying kettle according to claim 1, wherein the temperature control switch of the temperature control mechanism is a snap-action temperature control switch, and one end of the temperature control switch is connected to the positive power input end of the relay of the temperature control mechanism.

8. The vacuum drying kettle according to claim 1, wherein the power supply mechanism comprises a metal slip ring and a metal copper contact piece, the contact piece is mounted on one of the support frames in an insulated manner, the slip ring is mounted on the drive shaft at the side end of one of the support frames in an insulated manner, and the contact piece is electrically contacted with the slip ring.

Technical Field

The invention relates to the technical field of drying equipment, in particular to a vacuum drying kettle for fine chemical production.

Background

The vacuum drying kettle is specially designed for drying heat-sensitive, easily decomposed and easily oxidized substances (such as fine chemical products), and can quickly dry some objects with complex components. When the existing vacuum drying kettle works, hot water or low-pressure steam is introduced into a reaction kettle body to serve as a heating medium, a product in the reaction kettle body is heated, and meanwhile, the reaction kettle body is vacuumized by a vacuum pump. After the product in the reaction kettle body is heated, under the simultaneous action of vacuum, the water content of the product begins to evaporate and is gradually pumped away along with the vacuum pump, and the aim of drying the product is further achieved.

The kettle body of the existing vacuum drying kettle is in a fixed static state (does not generate any angular motion) during installation and work, and in order to ensure that the product in the kettle body is uniformly heated, the kettle body is internally provided with stirring blades which are driven by a motor reducing mechanism and drive the product to move in drying, so that the aim of uniformly heating is achieved as far as possible. Because stirring vane distributes in the cauldron internal generally to be located the middle level or the lower floor of product (also be located the internal middle part of cauldron or lower extreme), and stirring vane outside end and the internal certain distance of interval of cauldron, consequently can not effectively guarantee that the product that needs drying obtains intensive mixing and even heating, can bring certain influence to the drying effect of product more or less like this. And the time is longer back, because more and more products (some products have the bonding characteristic) adhere to, the adhesion is at stirring vane and (mixing) shaft outside end after the drying, stirring vane and the continuous grow of (mixing) shaft outside end external diameter, not only can bring the influence to the stirring effect, can vibrate and lead to the whole vibration noise of reation kettle to enlarge in the stirring vane of external diameter grow etc. rotates, also can reduce the internal volume of cauldron (follow-up dry product that drops will be less and less), also can cause certain restriction to reation kettle's effective reliable work. Based on the above, it is especially necessary to provide a vacuum drying kettle which can fully ensure uniform heating in product drying and can prevent the whole equipment from vibrating after a long time.

Disclosure of Invention

The invention provides a vacuum drying kettle for fine chemical production, which can continuously drive a kettle body to rotate during working under the action of a related mechanism, thereby ensuring that products in the kettle body are uniformly heated, and preventing the products from vibrating during working because no related part is positioned in the kettle body, and ensuring the effective volume in the kettle body.

The technical scheme adopted by the invention for solving the technical problems is as follows:

a vacuum drying kettle for fine chemical production comprises a kettle body, a motor reducing mechanism, a belt conveying belt, a driving belt pulley, a driven belt pulley, a supporting plate, a supporting frame, an electromagnetic valve, a voltage stabilizing power supply, an electric heating pipe, a power switch and a pressure switch; it is characterized in that the device also comprises a detection mechanism, a temperature control mechanism and a power supply mechanism; at least five electromagnetic valves are arranged, one ends of the first electromagnetic valve and the second electromagnetic valve are respectively connected with the upper end and the lower end of the kettle body, and the other end of the first electromagnetic valve is provided with a feeding bin; the outer end of the kettle body is provided with two layers, the electric heating pipe is arranged between the inner layer and the outer layer of the outer end of the kettle body, and the third electromagnetic valve is arranged at the outer end of one side of the kettle body; one end of the fourth electromagnetic valve and one end of the pressure switch are arranged at the outer end of the other side of the kettle body; a driving shaft is arranged in the middle of the other side of the kettle body, a bearing seat is arranged in the middle of one side of the kettle body, and a hollow connecting shaft is arranged in a bearing inner ring of the bearing seat; the two support frames are respectively arranged on the left part and the right part of the support plate, one end of the driving shaft is rotatably arranged at the upper end of one support frame, one end of the connecting shaft is arranged at the upper end of the other support frame, one end of the fifth electromagnetic valve is connected with the other end of the connecting shaft, and the other end of the fifth electromagnetic valve is connected with an air inlet pipe of the vacuum pump; the driven belt pulley is arranged at the other end of the driving shaft, the motor reducing mechanism is arranged at the lower end of one side of the supporting plate, the driving belt pulley and a power output shaft of the motor reducing mechanism are arranged together, and the transmission belt is sleeved between the driving belt pulley and the outer side of the driven belt pulley; the power supply mechanism is arranged at the upper part of one of the support frames, and the detection mechanism is arranged at the middle part of one of the support frames and the outer lower end of the other side of the kettle body; the temperature control mechanism comprises a temperature control switch and a relay, the temperature control switch is arranged on the outer side of the kettle body, and the voltage-stabilized power supply, the relay and the power supply switch are arranged in the element box; the first power output end of the detection mechanism is electrically connected with one end of a pressure switch, the other end of the pressure switch is electrically connected with one power input end of a fourth electromagnetic valve, and the second power output end of the detection mechanism is electrically connected with a vacuum pump and one power input end of a fifth electromagnetic valve; and the power output end of the temperature control mechanism is electrically connected with the power input end of the electric heating pipe.

Further, the five solenoid valves are normally closed spool solenoid valves.

Furthermore, the stabilized voltage supply is an AC-to-DC switching power supply module; the pressure switch is a normally open contact pressure switch. .

Furthermore, the detection mechanism comprises a reed switch, a magnet and a trigger sub-circuit, the trigger sub-circuit is installed in the element box, one support frame is provided with a connecting rod, the magnet is installed at one side end of the connecting rod, the reed switch is installed at the lower end outside the other side of the kettle body, the reed switch and the magnet are separated by a distance, and when the kettle body moves to the feeding bin and is located at the upper end, a movable contact and a fixed contact inside the reed switch are in a closed state.

Furthermore, the trigger sub-circuit of the detection mechanism comprises a resistor, a relay and an NPN triode, wherein the resistor, the relay, the NPN triode and a reed switch are electrically connected, one end of the reed switch is connected with the positive power input end of the first relay and the control power input end, the other end of the reed switch is connected with one end of the resistor, the other end of the resistor is connected with the base electrode of the NPN triode, the collector electrode of the NPN triode is connected with the negative power input end of the first relay, the normally open contact end of the first relay is connected with the positive power input end of the second relay, and the emitter electrode of the NPN triode is connected with the negative power input end of the second relay.

Furthermore, water is filled between the inner layer and the outer layer of the middle part of the kettle body.

Furthermore, the temperature control switch of the temperature control mechanism is a snap-action temperature control switch, and one end of the temperature control switch is connected with the input end of the relay positive power supply of the temperature control mechanism.

Furthermore, the power supply mechanism comprises a metal slip ring and a metal copper contact piece, the contact piece is installed on one of the support frames in an insulating mode, the slip ring is installed on the driving shaft in an insulating mode and located at the side end of one of the support frames, and the contact piece is in electrical contact with the slip ring.

The invention has the beneficial effects that: before the drying device is used, materials to be dried are put into the kettle body through the feeding bin, then the vacuum pump vacuumizes the interior of the kettle body, the motor speed reducing mechanism drives the kettle body to rotate, and the materials in the kettle body are heated to achieve a good drying effect. According to the invention, the power supply mechanism supplies power in a sliding manner, so that the normal power supply operation of related equipment is ensured when the kettle body rotates, the proper drying temperature in the kettle body can be ensured under the action of the temperature control mechanism, and the pressure can be discharged under the action of the pressure switch and the fourth electromagnetic valve when the pressure between the inner layer and the outer layer in the middle of the kettle body is too high, so that the normal operation of the equipment is ensured. In the invention, under the action of the detection mechanism, when the kettle body moves to the feeding bin and is positioned at the upper end (when the front and back inclination does not exceed about 8 degrees), the vacuum pump and the fifth electromagnetic valve can be electrified to work for a period of time, so that the discharge of moisture generated by drying materials in the kettle body is ensured, and the proper vacuum degree is kept in the kettle body. The invention ensures that the product in the kettle body is uniformly heated, and because no related part is positioned in the kettle body, the invention prevents the product from vibrating when attached to the whole equipment to work, ensures the effective volume in the kettle body and improves the working efficiency. Based on the above, the invention has good application prospect.

Drawings

The invention is further illustrated below with reference to the figures and examples.

FIG. 1 is a schematic diagram of the overall structure and a partial enlarged structure of the present invention.

Fig. 2 is a circuit diagram of the present invention.

Detailed Description

As shown in fig. 1, a vacuum drying kettle for fine chemical production comprises a kettle body 1, a motor reducing mechanism 2 (a coaxial motor gear reducer product, the rotating speed of a power output shaft is 6 revolutions per minute, and the power is 3KW), a belt conveying belt 3, a driving belt pulley 4, a driven belt pulley 5, a support plate 6, a support frame 7, an electromagnetic valve, a stabilized voltage power supply a1, an electric heating pipe RT, a power switch and a pressure switch W; the device is also provided with a detection mechanism, a temperature control mechanism and a power supply mechanism; the upper end and the lower end of the kettle body 1 are conical, the middle part of the kettle body is cylindrical, five electromagnetic valves are provided, one end of the first electromagnetic valve DC1 and one end of the second electromagnetic valve DC2 are respectively in threaded connection with the upper end connecting pipe and the lower end connecting pipe of the kettle body 1, and the other end of the first electromagnetic valve DC1 is provided with a feeding bin 101 with an open-type structure at the upper end through threads; the outer end of the middle part of the kettle body 1 is provided with two layers, five electric heating pipes RT are vertically fixed and insulated by screw nuts at certain intervals and are arranged in the middle of the outer side of the inner layer of the outer end of the middle part of the kettle body 1 (positioned between the inner layer and the outer layer of the outer end of the middle part of the kettle body 1), the outer side of the outer layer of the left upper end of the middle part of the kettle body 1 is transversely welded with a water adding pipe 102 communicated with the inner layer and the outer layer, and the other end of the water adding pipe 102 is connected with one end of a third electromagnetic valve DC3 through threads; two gas pipes 103 communicated with the inner layer and the outer layer are transversely welded on the outer side of the outer layer at the right upper end of the middle part of the kettle body 1 from top to bottom at a certain distance, the other end of one gas pipe 103 is connected with one end of a fourth electromagnetic valve DC4 through threads, and the other end of the other gas pipe 103 is connected with an air inlet pipe of a pressure switch W through a pipeline joint; a driving shaft 104 is transversely installed on the outer side of the outer layer of the right end of the middle part of the kettle body 1 through a screw nut, a bearing seat 105 is installed on the left end of the middle part of the kettle body 1 through the screw nut (the outer side of the bearing seat 105 seals the inner layer and the outer layer of the left end of the middle part of the kettle body 1), a hollow connecting shaft 106 is transversely sleeved in a bearing inner ring of the bearing seat 105 (a sealing ring is respectively installed between the inner ring and the outer ring of the left part and the outer ring of the right part of the bearing), the right end of the connecting shaft 106 is of a closed structure, an exhaust pipe 107 communicated with the inside of the connecting shaft is welded on the upper part of the right end of the connecting shaft 106, and the upper end of the exhaust pipe 107 is positioned on the left end of the middle part of the kettle body 1 and the right side of the upper end is downward; the number of the support frames 7 is two, and the lower ends of the two support frames 7 which are vertically distributed are respectively welded at the upper ends of the left part and the right part of the support plate 6. A bearing seat is arranged in the middle of the upper end of the right end support frame 7, the right end of a driving shaft 104 is transversely and tightly sleeved in a bearing inner ring of the bearing seat at the upper end of the right end support frame 7, the outer side of the left end of a connecting shaft 106 is welded in an opening hole in the middle of the upper end of the left end support frame 7, the rightmost end of the driving shaft 104 and the leftmost end of the connecting shaft 106 are respectively positioned outside the right end of the right end support frame 7 and outside the left end of the left end support frame 7, one end of a fifth electromagnetic valve DC5 is in threaded connection with the leftmost end of the connecting shaft 106 through threads, and the other end of the fifth electromagnetic valve DC5 is connected with an air inlet pipe of a vacuum pump (not shown in figure 1) through a pipeline; the driven belt pulley 5 is tightly sleeved at the right outer side end of the driving shaft 104, the motor reducing mechanism 2 is transversely installed at the right side end of the supporting plate 6 through a screw nut, the driving belt pulley 4 is tightly sleeved at the left end of a power output shaft of the motor reducing mechanism 2, and the annular transmission belt 3 is sleeved between the driving belt pulley 4 and the outer side of the driven belt pulley 5; the power supply mechanism is arranged at the upper part of a support frame 7 at the right end of the support plate, and the detection mechanism is arranged at the middle part of a support frame 6 at the right end of the support plate and the lower part of the outer right end of the middle outer layer of the kettle body 1; temperature-controlled mechanism includes temperature detect switch T and relay K3, and temperature detect switch T installs in the outer outside upper end in middle part of the cauldron body 1 through screw nut, constant voltage power supply A1, relay K3, three switch S1, S2, S3 install on component box 8 inner circuit board, component box 8 installs in the outer outside middle part of the cauldron body 1 through screw nut, and switch' S operating handle is located outside the trompil of component box 8 front end (there is the heat insulating mattress between component box 8 rear side and the cauldron body 1 outside). A vacuum meter 9 is arranged on the left side of the upper end of the kettle body 1.

As shown in fig. 1 and 2, the first electromagnetic valve DC1 and the second electromagnetic valve DC2 are normally closed valve core electromagnetic valves with power of 5W and working voltage of direct current of 12V, the third electromagnetic valve DC3 and the fourth electromagnetic valve DC4 are normally closed valve core electromagnetic valves with power of 2W and working voltage of direct current of 12V, and the fifth electromagnetic valve DC5 is normally closed valve core electromagnetic valves with power of 5W and working voltage of direct current of 220V, the working voltage of the motor reduction mechanism 2 is alternating current of 380V, and is connected with a 380V alternating current power supply through a power switch; the stabilized voltage supply A1 is a finished product of a 220V/12V AC-to-DC 12V switching power supply module; the electric heating tube RT is a bar-shaped tubular electric heating tube with power of 1500W; the pressure switch W is a normally open contact pressure switch finished product of a KRS-2E model, and the control pressure of the pressure switch W is 0.15Mpa. The detection mechanism comprises a reed switch GH, a fan-shaped permanent magnet CT and a trigger subcircuit 10, the trigger subcircuit 10 is installed in an element box 8, a connecting rod 61 is transversely installed at the front end of the middle part of a support frame 7 at the right end of a support plate 6, the magnet CT is installed at the left end of the connecting rod 61 through adhesive bonding, the reed switch GH is installed in a small shell, the lower part of the outer right outer end of the middle part of a kettle body 1 is installed through a screw nut for the small shell, a static contact of the reed switch GH is located at the right end, the left end of the shell and the left end of the magnet CT are separated by a certain distance (2 mm), when the kettle body 1 moves to the upper end of a feeding bin 101 (the front and back inclination is not more than 8 degrees or so), the left end of the magnet CT is located at the right end of the reed switch GH, and a movable contact and a static contact inside the reed switch are in a closed state. The trigger sub circuit of the detection mechanism comprises a resistor R1, relays K1, K2 and an NPN triode Q1, wherein the resistor, the relays, the NPN triode and a reed switch are connected through a lead, one end of the reed switch GH is connected with the positive power supply input end of the first relay K1 and the control power supply input end, the other end of the reed switch GH is connected with one end of a resistor R1, the other end of the resistor R1 is connected with the base electrode of the NPN triode Q1, the collector electrode of the NPN triode Q1 is connected with the negative power supply input end of the first relay K1, the normally open contact end of the first relay K1 is connected with the positive power supply input end of the second relay K2, and the emitter electrode of the NPN triode Q1 is connected with the negative power supply input end of the second relay K2. Water is filled between the inner layer and the outer layer of the middle part of the kettle body 1, and submerges the upper ends of the heat pipes RT of the five motor reducing mechanisms. The temperature control switch T of the temperature control mechanism is a finished product of a kick type normally open contact temperature control switch at 85 ℃, a temperature sensing surface of the temperature control switch T is tightly attached to the outer side upper end of the middle outer layer of the kettle body 1, and one end of the temperature control switch T is connected with the positive power supply input end of the relay K3. The power supply mechanism comprises two copper slip rings H and two copper contact pieces J, a plastic insulating plate 62 is transversely installed on the upper portion of a support frame 7 at the right end of the support plate, the lower ends of the two contact pieces J are installed at the left end of the insulating plate 62 through screw nuts at certain intervals, a plastic insulating cylinder 63 is tightly sleeved on the outer side of the left end of the support frame at the right end of the drive shaft 104, the two slip rings H are tightly sleeved on the outer side of the insulating cylinder 63 at certain intervals, the rear upper sides of the two contact pieces J are in electrical contact and conduction with the front ends of the two slip rings H respectively, and an insulating protective shell 64 is installed on the outer sides of the slip rings H and the contact pieces J to prevent people from electric shock.

As shown in fig. 1 and 2, two poles of a 220V alternating current power supply and two copper contact pieces J of a power supply mechanism are respectively connected through leads. The lower ends of the left sides of two slip rings H of the power output end of the power supply mechanism are respectively connected with the power input ends 1 and 2 of a stabilized voltage power supply A1 through leads (a wire groove is transversely arranged in the middle of a driving shaft 104, the leads connected with the two slip rings are positioned in the wire groove, an insulating cylinder is sleeved at the outer side end of the wire groove, the right ends of the two leads are respectively connected with the middle parts of the inner side ends of the two slip rings, the left ends of the two leads are led out from the left end of the wire groove and enter an element box), the pins 3 and 4 of the power output end of a stabilized voltage power supply A1 are respectively connected with the power input ends of a relay K1 anode power supply input end and an NPN triode Q1 emitting electrode of a detection mechanism, and the other ends of a temperature control switch T at the power input ends of a temperature control mechanism and the power input end of a relay K3 cathode power supply input end of the temperature control mechanism are respectively connected through leads. One pole of a 220V alternating current power supply is connected with a power supply input end of a relay K2 control power supply of a detection mechanism and a relay K3 control power supply input end of a temperature control mechanism through a lead wire through one contact piece J and one slip ring H, a normally open contact end of a first path power supply output end relay K1 of the detection mechanism is connected with one end of a pressure switch W through a lead wire, and the other end of the pressure switch W, a 4-pin negative power supply output end of a stabilized voltage power supply A1 and two ends of the power supply input end of a fourth electromagnetic valve DC4 are connected through lead wires respectively. The normally open contact end of a relay K2 at the output end of a second power supply of the detection mechanism, the other pole of a 220V alternating current power supply are respectively connected with the two ends of the power supply input of a vacuum pump M and a fifth electromagnetic valve DC5 through a lead by another contact piece J and another slip ring H; the 3 pins of the positive power output end of the regulated power supply A1 are connected with one end of three power switches S1, S2 and S3 through leads. The other ends of the three power switches S1, S2 and S3 and the power output end 4 pin of the cathode of the regulated power supply A1 are respectively connected with the power input ends of the first electromagnetic valve DC1, the second electromagnetic valve DC2 and the third electromagnetic valve DC3 through leads. The normally closed contact end of a power output end relay K3 of the temperature control mechanism, the other pole of a 2220V alternating current power supply are respectively connected with the two ends of the power input of the five electric heating tubes RT through another contact piece J and another slip ring H through leads (the leads connected with the five electric heating tubes are led out from a plurality of openings on the outer side of the kettle body in an insulated manner and connected in parallel into an element box, and the openings are sealed by heat-resistant sealant and the like).

As shown in fig. 1 and 2, before the present invention is used, a user turns on a 220V power switch, so that a 220V ac power enters a power input end of a regulated power supply a1 through two contact pieces J and two slip rings H, respectively, so that the regulated power supply a1 outputs a stable 12V dc power under the action of its internal circuit at pins 3 and 4 and enters a power input end of a detection mechanism and a temperature control mechanism, and the detection mechanism and the temperature control mechanism are in an on-state. In the invention, because the contact piece J is contacted with the slip ring H and electrically conducted, when the drive shaft 104 and the kettle body 1 are driven to rotate by the subsequent motor reducing mechanism 2, two poles of a 220V alternating current power supply respectively enter the two slip rings H through the two contact pieces J, so that the 22OV alternating current power supply can effectively enter a stabilized voltage power supply A1 and the like, and the normal power-on work of related equipment is ensured when the kettle body 1 rotates (when the slip ring H rotates, the related equipment is always contacted with the elastic contact piece J and electrically conducted). Before the material is dried, when the kettle body 1 is in a nearly vertical state, a worker opens the first power switch S1, then the first electromagnetic valve DC1 is powered on, the valve core is opened, the user can put the material to be dried into the feeding bin 101 and enter the kettle body 1, and the worker closes the first power switch S1 after the feeding is finished. In the invention, water is filled between the inner layer and the outer layer of the middle part of the kettle body 1, the upper ends of five electric heating pipes RT are submerged by the water, when a 220V power supply is turned on, a 12V power supply anode output by a pin 3 of a stabilized power supply A1 enters one end of a temperature control switch T, one pole of a 220V alternating current power supply enters the control power supply input end of a relay K3, when water is not heated at the beginning, the internal contact of the temperature control switch T is in a normally open state, the relay K3 cannot be electrified, the control power supply input end and the normally closed contact end are closed, thus, the five electric heating pipes RT can generate heat electrically and heat the water in the middle part of the kettle body 1 between the inner layer and the outer layer, after a period of heating, when the temperature of the water rises and acts on the temperature sensing surface of the temperature control switch T through the outer layer of the front end of the kettle body 1, the internal contact of the temperature control switch T is closed, and the 12V power supply anode can enter the positive power supply input end of the relay K3, the relay K3 is electrified to attract the control power supply input end and the normally closed contact end to be open, and then the five electric heating tubes RT are not heated any more when power is lost. When the water temperature is lower than 85 ℃ again, the internal contact of the temperature control switch T is opened again, so that the relay K3 loses power and is not powered to attract the input end of the control power supply and the normally closed contact end to be closed, and the five electric heating pipes RT are powered to heat water again. Through the above, the invention can ensure that the inside of the kettle body 1 is at a proper drying temperature during working, and meets the requirement of the drying temperature of the materials in the kettle body 1. In the invention, when water in the middle part between the inner layer and the outer layer of the kettle body 1 is heated and the pressure in the middle part between the inner layer and the outer layer of the kettle body 1 is higher than 0.15Mpa, two contacts in the pressure switch W are closed, so that a 12V power supply enters the positive power supply input end of a fourth electromagnetic valve DC4, and a solenoid valve DC4 is opened, so that overhigh pressure is discharged outwards through the solenoid valve DC4, and the potential safety hazard caused by overhigh pressure of an LE is prevented (in an actual situation, only when the kettle body 1 is in a nearly vertical state, the solenoid valve DC4 can be electrically discharged with overhigh pressure, and the specific principle is replaced later). After the air pressure is reduced, because two contacts in the pressure switch W are opened, the electromagnetic valve DC4 is closed again when the power-off valve core is lost, and the phenomenon that water is discharged when the exhaust gas is opened when the electromagnetic valve DC4 is positioned at the lower end is prevented, so that the normal work of the equipment is influenced. When water is added between the inner layer and the outer layer of the middle part of the kettle body 1, a water inlet pipe at the left end of a third electromagnetic valve DC3 is connected with a tap water pipe through a hose, then a power switch S3 is turned on, the electromagnetic valve DC3 is powered on, so that the water enters the space between the inner layer and the outer layer of the middle part of the kettle body 1 (in the water adding process, because the water pressure is higher than 0.15Mpa, air pressure generated between the inner layer and the outer layer of the middle part of the kettle body 1 is discharged from a fourth electromagnetic valve DC 4), after the water is added, a power switch S3 is turned off, then the electromagnetic valve DC3 is powered off, and the water adding process is completed after the hose is taken off.

As shown in fig. 1 and 2, after a user opens a 220V power switch, in an initial state of the invention (when a motor reduction mechanism 2 is not powered to work), a kettle body 1 is nearly vertical, the magnetic acting force of a magnet CT acts on a reed pipe GH, and the internal contact of the reed pipe GH is closed, so that the positive pole of a 12V power supply can be subjected to voltage reduction and current limitation through the reed pipe GH with the closed contact and enters the base of an NPN triode Q1 through a resistor R1, the NPN triode Q1 is conducted with a collector to output a low level to enter the negative power input end of a relay K1, the relay K1 is powered to close the control power input end and the normally open contact end, and then the other end of a pressure switch W is powered, so that the electromagnetic valve DC4 can be powered to discharge over-high air pressure only when the kettle body 1 is nearly vertical (when the kettle body 1 is not nearly vertical, the magnetic acting force of the magnet CT cannot act on the reed pipe GH, the internal contact of the reed switch GH is open, so that the relay K1 cannot be powered, and the other end of the pressure switch W cannot be powered); meanwhile, the positive power supply output by the normally open contact end of the relay K1 can enter the positive power supply input end of the relay K2, the relay K2 is electrified to attract the control power supply input end and the normally open contact end of the relay to be closed, and then the vacuum pump M can be electrified to work to pump out air in the kettle body 1 (the electromagnetic valve DC5 can also be electrified). The staff observes the internal vacuum of cauldron through vacuum gauge 9 and is enough after, just can open 380V switch, so motor reduction gears 2 have the electricity work and pass through driven pulley 5, driving belt 3, driving pulley 4 drives drive shaft 104 and rotates, and then cauldron body 1 rotates, cauldron body 1 left end warp bearing frame 105 outer lane and rotate along connecting axle 106, connecting axle 106 does not move, when motor reduction gears 2 drive cauldron body 1 and rotate, guaranteed that the even abundant heat energy that receives of the internal material of cauldron 1 reaches better drying effect. When the kettle body 1 rotates by a certain angle, the kettle body moves to the feeding bin 1 and is not positioned at the upper end, or the feeding bin is positioned at the upper end and inclines forwards and backwards to exceed about 8 degrees, the left end of the magnet CT is not positioned at the right end of the reed pipe GH, the movable contact and the static contact inside the reed pipe GH are in an open circuit state, the NPN triode Q1 is cut off, the relays K1 and K2 lose power, the electromagnetic valve DC loses power, the valve core is closed, and the vacuum pump M loses power and does not work. When the kettle body 1 is driven by the motor reducing mechanism 2 to rotate again, the kettle body moves to the feeding bin 1 and is located at the upper end, the front and back inclination is not more than about 8 degrees, the left end of the magnet CT is located at the right end of the reed pipe GH again, the movable contact and the fixed contact inside the reed pipe GH are in a closed state, then the relays K1 and K2 can be electrified again for attraction, the electromagnetic valve DC5 can be electrified again for the valve core to be opened, and the vacuum pump M can also work again. Through the above, the vacuum pump M and the electromagnetic valve DC5 can be powered to work for a period of time when the kettle body 1 rotates for one circle (6 revolutions per minute), so that moisture generated by drying materials in the kettle body is discharged in time, and the kettle body is kept in proper vacuum degree. In the invention, because the exhaust pipe 107 is positioned at the upper end of the middle part of the kettle body 1, the lower end of the exhaust pipe 107 is not shielded no matter how the materials in the kettle body 1 roll and move downwards, and the air and moisture in the kettle body 1 are ensured to be exhausted through the electromagnetic valve DC5 and the vacuum pump M.

As shown in fig. 1 and 2, after the materials in the kettle body 1 are completely dried after a period of time (the gas pumped by the vacuum pump M has no moisture, generally about 25 minutes), when the kettle body 1 is nearly vertical, a worker closes the 380V power switch, so that the kettle body 1 is not driven to rotate when the motor speed reducing mechanism 2 loses power, then the worker opens the second power switch S2, so that the second electromagnetic valve DC2 is powered on, so that the dried materials in the kettle body 1 can be discharged downwards through the electromagnetic valve DC2 to enter a finished product barrel which is placed at the lower end of the electromagnetic valve DC2 in advance, and after the materials are filled, one of the material barrels is transported away, and the next material barrel is placed at the lower end of the electromagnetic valve DC2 to prepare for drying the materials of the next batch. In the discharged material, although vacuum pump M continues to be electrified (a power switch can also be independently arranged and is connected between the normally open contact end of relay K2 and the power input end of vacuum pump M and solenoid valve DC5, the power switch is closed at the moment, and vacuum pump M and solenoid valve DC5 can also lose electricity), because solenoid valve DC2 is opened to destroy the vacuum degree in kettle body 1, the dried material can smoothly enter the finished product barrel. And after all the processes are finished, closing the 220V power switch to completely finish the drying of the materials of one batch. The invention ensures that the product in the kettle body is uniformly heated, and because no related part is positioned in the kettle body, the invention prevents the product from vibrating when attached to the whole equipment to work, ensures the effective volume in the kettle body and improves the working efficiency. The resistance R1 is 1K; the model of the NPN triode Q1 is 9013; relays K1, K2, K3 are DC12V relays; and the reed switch GH is a normally open contact reed switch of the glass shell.

While there have been shown and described what are at present considered the fundamental principles and essential features of the invention and its advantages, it will be apparent to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but is capable of other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, the embodiments do not include only one independent technical solution, and such description is only for clarity, and those skilled in the art should take the description as a whole, and the technical solutions in the embodiments may be appropriately combined to form other embodiments that can be understood by those skilled in the art.