A hydroxypropyl methylcellulose drying device

Abstract

The application provides a hydroxypropyl methyl cellulose drying device and belongs to the technical field of hydroxypropyl methyl cellulose processing equipment. The hydroxypropyl methyl cellulose drying device comprises a conveying mechanism, a layering mechanism and a guide mechanism. The conveying mechanism is used for conveying hydroxypropyl methyl cellulose through the drying area of the drying device. The layering mechanism is arranged on the baffle of the conveying mechanism inside the drying area. The layering mechanism separates the space above the conveying mechanism into an upper conveying channel and a lower conveying channel. The layering mechanism comprises a conveying component which is used for conveying the hydroxypropyl methyl cellulose in the upper conveying channel. The guide mechanism comprises a guide block which penetrates the top of the discharging end of the conveying component to form a delay channel. The discharging end of the delay channel is attached to the surface of the conveying belt of the conveying mechanism. The application has the advantage of automatic material turning.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of hydroxypropyl methyl cellulose processing equipment, in particular to a hydroxypropyl methyl cellulose drying device. BACKGROUND

[0002] At present, the automatic drying device of hydroxypropyl methyl cellulose is to set the parameters of the drying oven first, and then use the conveying belt to feed and discharge the drying oven. The drying process of hydroxypropyl methyl cellulose is realized when the conveying belt loads the hydroxypropyl methyl cellulose through the drying oven.

[0003] However, when the hydroxypropyl methyl cellulose is evenly laid on the conveying belt, the upper layer of the hydroxypropyl methyl cellulose layer is close to the heat source, which makes the drying efficiency of the upper layer higher than that of the inner layer of the hydroxypropyl methyl cellulose layer. Therefore, the hydroxypropyl methyl cellulose in the lower layer is not fully dried after being conveyed out of the drying oven.

[0004] In addition, the hydroxypropyl methyl cellulose in the inner layer has less contact area with the external air during the drying process, so that the water vapor generated by heating is not easy to be quickly discharged and is easy to be retained in the inner layer, which affects the drying efficiency. SUMMARY

[0005] To solve the above technical problems, the present application provides a hydroxypropyl methyl cellulose drying device capable of automatically turning over the material.

[0006] The technical scheme of the present application is as follows:

[0007] A hydroxypropyl methyl cellulose drying device, comprising:

[0008] A conveying mechanism for conveying hydroxypropyl methyl cellulose through the drying area of the drying device;

[0009] A layering mechanism arranged on the baffle of the conveying mechanism inside the drying area, which separates the space above the conveying mechanism into an upper conveying channel and a lower conveying channel;

[0010] The layering mechanism comprises a transmission component for conveying the hydroxypropyl methyl cellulose in the upper conveying channel;

[0011] A guide mechanism comprising a guide block, which penetrates the top of the discharge end of the transmission component to form a delay channel, the discharge end of the delay channel is in close contact with the surface of the conveying belt of the conveying mechanism, and there is a gap between the discharge port of the delay channel and the surface of the conveying belt of the transmission mechanism, the delay channel is used to reversely convey the hydroxypropyl methyl cellulose in the upper conveying channel to the lower conveying channel;

[0012] The upper moving channel is arranged between the delay channels and is used to increase the conveying height of the hydroxypropyl methyl cellulose in the lower conveying channel.

[0013] Further, the layering mechanism further comprises heat source pipes arranged inside the conveying component along the width direction of the conveying mechanism, and the open ends of the heat source pipes are arranged through the baffle of the conveying mechanism.

[0014] Further, the conveying component comprises a layering conveying belt connected with the conveying mechanism through a belt pulley assembly, a separating conveying belt connected with the layering conveying belt through a first transmission assembly, and a transfer belt arranged between the layering conveying belt and the separating conveying belt, both ends of the transfer belt are arranged through bearing sleeves at the end portions of the conveying rollers of the layering conveying belt and the separating conveying belt, and both ends of the transfer belt are in sliding fit with the end portions of the layering conveying belt and the separating conveying belt.

[0015] Further, the first transmission assembly comprises a first belt pulley connected with the layering conveying belt through a belt pulley assembly, a first gear on the same rotating shaft as the first belt pulley, a second gear in meshing transmission with the first gear, a first incomplete gear on the same rotating shaft as the second gear, a transmission sleeve arranged through the end portion of the conveying roller at the outer side end of the separating conveying belt, a second incomplete gear fixedly installed at the outer side end of the transmission sleeve, and a transmission rod fixedly installed at the inner side end of the transmission sleeve, the first incomplete gear and the second incomplete gear are in intermittent meshing.

[0016] Further, the separating conveying belt is fixedly installed with a transmission gear at the end portion of the conveying roller close to the transfer belt, the inner side surface of the baffle of the conveying mechanism is provided with a swing groove, the swing groove comprises an inner groove body arranged in a fan ring shape and an outer groove body arranged in a fan shape, the width of the inner groove body is adapted to the swing amplitude of the transmission gear, the arc inner wall width of the outer groove body is adapted to the swing amplitude of the transmission rod, the arc inner wall of the inner groove body is arranged with a driving tooth block which can be displaced along the radius of the outer groove body, and the outer side end of the driving tooth block is arranged in a right trapezoidal shape, the driving tooth blocks on the opposite two groups of inner groove bodies are respectively installed on the opposite arc inner walls of the inner groove bodies.

[0017] Further, the feeding port of the delay channel is arranged in alignment with the discharging end of the separating conveying belt, and the feeding port of the upper moving channel is arranged below the separating conveying belt.

[0018] Further, the guiding mechanism further comprises a material blocking plate arranged along the top end edge of the guiding block and a guiding inclined surface formed by the upward protrusion of the top portion of the guiding block, and the bottom end of the guiding inclined surface is in connection with the feeding port edge of the delay channel.

[0019] Further, the inner side surface of the transmission rod is rotationally installed with a pressing plate through a sliding connection assembly, the bottom end of the pressing plate is rotationally installed with a steering rod, and the top end of the steering rod is rotationally installed on the end part of the conveying roller at the inner side end of the separation conveying belt.

[0020] Further, the sliding connection assembly comprises a limiting sliding groove arranged on the inner side surface of the transmission rod, a limiting block slidingly installed in the limiting sliding groove, a return spring abuttingly installed between the limiting sliding groove and the limiting block, and a connecting rod installed on the limiting block, and the outer side end of the connecting rod extends out of the limiting sliding groove and is rotationally connected with the top end of the transmission rod.

[0021] The present application has the following beneficial effects:

[0022] 1、The present application sets a layered mechanism on the basis of the existing drying device, divides the upper space of the conveying mechanism into upper and lower conveying channels, realizes the accelerated conveying effect of the upper layer of materials by combining with the transmission component, sets a guide block at the discharging end of the transmission component, reversely transports the accelerated upper layer of materials back to the conveying mechanism through the delay channel, sets the discharging port of the upward moving channel on the conveying path of the upper layer of materials conveyed by the conveying mechanism again, simultaneously lifts the lower layer of materials by a certain height through the upward moving channel, so that the lower layer of materials conveyed through the upward moving channel can be covered on the upper layer of materials, thereby realizing the up-and-down turnover effect of the materials, reducing the situation that the lower layer of materials cannot be sufficiently dried due to being far away from the heat source, and ensuring that each layer of materials can have a certain contact time with the external air, which is beneficial to the volatilization of the internal moisture of the materials.

[0023] 2、The present application sets a heat source pipe in the transmission component, inputs hot steam into the inside of the heat source pipe through an external steam supply device, heats the surface of the transmission component through the mode of solid heat transfer, realizes the auxiliary heating effect of the materials above and below the transmission component, and improves the drying efficiency of the materials.

[0024] 3、The present application sets the separation conveying belt to be rotatable at one end, drives the separation conveying belt to swing up through the transmission assembly, realizes the stripping of the upper layer of materials on the separation conveying belt, combines with the material blocking plate, sets the feeding port of the delay channel at the discharging end of the separation conveying belt, so that the upper layer of materials on the separation conveying belt can be transported into the delay channel.

[0025] 4、The present application installs a transmission gear on the end part of the conveying roller at the free end of the separation conveying belt, sets a telescopic driving tooth block on the arc-shaped wall of the inner groove body, sets the right-angle edges of the driving tooth block in an up-and-down manner respectively, realizes the effect that the driving tooth block is driven to rotate counterclockwise during the up-and-down swinging stroke of the transmission gear, and further realizes the effect that the separation conveying belt itself keeps conveying materials counterclockwise during the up-and-down swinging stroke. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 is a schematic diagram of the overall structure of a hydroxypropyl methyl cellulose drying device according to the present application;

[0027] Figure 2 is a schematic diagram of the layering mechanism of a hydroxypropyl methyl cellulose drying device according to the present application;

[0028] Figure 3 is a schematic diagram of the layering mechanism of a hydroxypropyl methyl cellulose drying device according to the present application; Figure 2 is an enlarged view of A of the schematic diagram of the layering mechanism of a hydroxypropyl methyl cellulose drying device according to the present application;

[0029] Figure 4 is a schematic diagram of the layering conveyor belt of a hydroxypropyl methyl cellulose drying device according to the present application;

[0030] Figure 5 is a schematic diagram of the layering mechanism of a hydroxypropyl methyl cellulose drying device according to the present application; Figure 4 is an enlarged view of B of the schematic diagram of the layering mechanism of a hydroxypropyl methyl cellulose drying device according to the present application;

[0031] Figure 6 is an enlarged view of C of the schematic diagram of the layering mechanism of a hydroxypropyl methyl cellulose drying device according to the present application; Figure 4

[0032] Figure 7 is a schematic diagram of the oscillating groove of a hydroxypropyl methyl cellulose drying device according to the present application;

[0033] Figure 8 is an enlarged view of D of the schematic diagram of the oscillating groove of a hydroxypropyl methyl cellulose drying device according to the present application; Figure 7

[0034] Figure 9 is a schematic diagram of the driving tooth block of a hydroxypropyl methyl cellulose drying device according to the present application;

[0035] Figure 10 is a schematic diagram of the guide block of a hydroxypropyl methyl cellulose drying device according to the present application;

[0036] Figure 11 is an enlarged view of E of the schematic diagram of the guide block of a hydroxypropyl methyl cellulose drying device according to the present application; Figure 10

[0037] Figure 12 is a schematic diagram of the transmission gear of a hydroxypropyl methyl cellulose drying device according to the present application;

[0038] Figure 13 is an enlarged view of F of the schematic diagram of the transmission gear of a hydroxypropyl methyl cellulose drying device according to the present application; Figure 12

[0039] Figure 14 is a schematic diagram of the pressing plate of a hydroxypropyl methyl cellulose drying device according to the present application;

[0040] ​​​​Figure 15 This invention relates to a hydroxypropyl methylcellulose drying apparatus. Figure 14 Enlarged view of point G;

[0041] Figure 16 This is a schematic diagram of the separating conveyor belt of a hydroxypropyl methylcellulose drying device according to the present invention;

[0042] Figure 17 This is a schematic diagram of the material blocking plate of a hydroxypropyl methylcellulose drying device according to the present invention;

[0043] Figure 18 This invention relates to a hydroxypropyl methylcellulose drying apparatus. Figure 17 Enlarged view of point H;

[0044] Figure 19 This is a schematic diagram of the delay channel of a hydroxypropyl methylcellulose drying device according to the present invention.

[0045] Diagram: 1. Conveying mechanism; 2. Layering mechanism; 3. Upper conveying channel; 4. Lower conveying channel; 5. Transmission components; 5.1 Layered conveyor belt; 5.2 Separating conveyor belt; 5.3 Transfer belt; 6. Guiding mechanism; 7. Guide block; 7.1 Delay channel; 7.2 Upward channel; 8. Heat source pipe; 9. First transmission assembly; 9.1 First pulley; 9.2 First gear; 9.3 Second gear; 9.4 First incomplete gear; 9 9.5. Transmission sleeve; 9.6. Second incomplete gear; 9.7. Transmission rod; 10. Transmission gear; 11. Swing groove; 11.1. Inner groove; 11.2. Outer groove; 12. Telescopic spring; 13. Drive tooth block; 14. Material blocking plate; 15. Guide inclined surface; 16. Pressure plate; 17. Steering rod; 18. Sliding connection assembly; 18.1. Limiting slide groove; 18.2. Limiting block; 18.3. Return spring; 18.4. Connecting rod. Detailed Implementation

[0046] The technical solutions in the embodiments of the present invention will be clearly and completely described below. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0047] Please see Figures 1 to 19 As shown, the present invention provides a hydroxypropyl methylcellulose drying device, including a conveying mechanism 1, a layering mechanism 2 and a guiding mechanism 6.

[0048] The conveying mechanism 1 is used to transport hydroxypropyl methylcellulose through the drying zone of the drying device to dry the hydroxypropyl methylcellulose.

[0049] The layering mechanism 2 is arranged on the baffle of the conveying mechanism 1 inside the drying area, and the layering mechanism 2 divides the space above the conveying mechanism 1 into an upper conveying channel 3 and a lower conveying channel 4. The hydroxypropyl methyl cellulose on the conveying mechanism 1 is separated into two layers when passing through the layering mechanism 2, and the upper layer of hydroxypropyl methyl cellulose is conveyed through the upper conveying channel 3, and the lower layer of hydroxypropyl methyl cellulose is conveyed through the lower conveying channel 4.

[0050] The guide mechanism 6 includes guide blocks 7, and the guide blocks 7 are provided with delay channels 7.1 penetrating through the top of the discharge end of the separation conveying belt. The discharge end of the delay channel 7.1 is arranged on the surface of the conveying belt of the conveying mechanism, and the delay channel 7.1 is used to reversely transport the hydroxypropyl methyl cellulose in the upper conveying channel 3 to the lower conveying channel 4. The discharge end of the delay channel 7.1 is in close contact with the conveying surface of the conveying mechanism 1, so that the bottom end of the guide block 7 can intercept the lower layer of hydroxypropyl methyl cellulose, and the lower layer of hydroxypropyl methyl cellulose can be transported along the inclined surface of the guide block 7. There is a gap between the inner bottom wall of the delay channel 7.1 and the conveying surface of the conveying mechanism 1, so that the upper layer of hydroxypropyl methyl cellulose can smoothly fall onto the surface of the conveying belt of the conveying mechanism 1 through the discharge port of the delay channel 7.1.

[0051] The upper moving channels 7.2 are arranged between the delay channels 7.1, and the inlet of the upper moving channel 7.2 penetrates through the inclined surface of the guide block 7. The upper moving channel 7.2 is used to increase the transport height of the hydroxypropyl methyl cellulose in the lower conveying channel 4, so that the lower layer of hydroxypropyl methyl cellulose falls onto the conveying mechanism 1 in a falling state.

[0052] In order to realize the effect that the upper layer of hydroxypropyl methyl cellulose falls onto the conveying mechanism 1 after being conveyed below the upper moving channel 7.2, the discharge port of the delay channel 7.1 and the discharge port of the upper moving channel 7.2 are arranged in sequence along the conveying direction of the material.

[0053] The layering mechanism 2 includes a transmission component 5, and the upper layer of hydroxypropyl methyl cellulose is accelerated on the transmission component 5 to be transported, so that the upper layer of hydroxypropyl methyl cellulose falls onto the conveying mechanism 1 earlier than the lower layer of hydroxypropyl methyl cellulose, and the lower layer of hydroxypropyl methyl cellulose can cover the upper layer of hydroxypropyl methyl cellulose when falling onto the conveying mechanism 1, thereby realizing the effect of turning over the upper and lower layers of hydroxypropyl methyl cellulose.

[0054] The layered mechanism 2 further comprises heat source pipes 8 which are inserted inside the transmission component 5 along the width direction of the conveying mechanism 1, and the open ends of the heat source pipes 8 are all penetrated through the baffle plate of the conveying mechanism 1, and the open ends of the two ends of the heat source pipes 8 are respectively connected with external steam supply equipment and recovery equipment, and steam enters the inside of the heat source pipes 8, and heat is transferred to the surface of the layered conveying belt 5.1 through the pipe wall of the heat source pipes 8, and the high temperature of the surface of the layered conveying belt 5.1 dries the upper and lower layers of hydroxypropyl methyl cellulose in contact with it, so as to increase the heat source for drying the material and assist in improving the drying efficiency.

[0055] The transmission component 5 comprises a layered conveying belt 5.1, a separation conveying belt 5.2 and a transfer belt 5.3.

[0056] In order to realize the accelerated conveying of the upper layer of hydroxypropyl methyl cellulose, the layered conveying belt 5.1 is drivingly connected with the conveying mechanism 1 through a pulley assembly, and the layered conveying belt 5.1 is driven to rotate under the driving of the pulley assembly, and the large pulley on the conveying mechanism 1 drives the small pulley on the layered conveying belt 5.1 to rotate, so that the conveying speed of the transmission component 5 is greater than the conveying speed of the conveying mechanism 1.

[0057] The separation conveying belt 5.2 is drivingly connected with the layered conveying belt 5.1 through a first transmission assembly 9, and the separation conveying belt 5.2 is driven to overturn with the transmission roller shaft center of the outer end as the center, the two ends of the transfer belt 5.3 are respectively sleeved on the transmission roller end of the layered conveying belt 5.1 and the separation conveying belt 5.2 through bearing sleeves, and the transfer belt 5.3 itself has no power source, the two ends of the transfer belt 5.3 respectively form surfaces matched with the shapes of the end portions of the layered conveying belt 5.1 and the separation conveying belt 5.2, so that the two ends of the transfer belt 5.3 are respectively slidably connected with the end portions of the layered conveying belt 5.1 and the separation conveying belt 5.2, and one end thereof can follow the transmission roller of the inner end of the separation conveying belt 5.2 to synchronously swing up and down, so that the upper layer of material conveyed by the layered conveying belt 5.1 to the separation conveying belt 5.2 can be intercepted and stored by the transfer belt 5.3 in the state of upward inclination, and in the downward stroke of the separation conveying belt 5.2, the material on the transfer belt 5.3 falls onto the separation conveying belt 5.2.

[0058] The first transmission assembly 9 comprises a first pulley 9.1, a first gear 9.2, a second gear 9.3, a transmission sleeve 9.5, a first incomplete gear 9.4, a second incomplete gear 9.6 and a transmission rod 9.7, the first pulley 9.1 is installed on the baffle of the conveying mechanism 1 through a rotating rod bearing, and the first pulley 9.1 is in transmission connection with the layered conveying belt 5.1 through a belt pulley assembly, the first gear 9.2 is fixedly installed on the rotating rod of the first pulley 9.1, the second gear 9.3 is installed on the baffle of the conveying mechanism 1 through a rotating rod bearing, and the second gear 9.3 is in meshing connection with the first gear 9.2, the first incomplete gear 9.4 is fixedly installed on the rotating rod of the second gear 9.3, the transmission sleeve 9.5 is sleeved on the end of the conveying roller of the outer side of the separation conveying belt 5.2, the second incomplete gear 9.6 is fixedly installed on the outer side end of the transmission sleeve 9.5, and the second incomplete gear 9.6 is in intermittent meshing connection with the first incomplete gear 9.4, the transmission rod 9.7 is fixedly installed on the inner side end of the transmission sleeve 9.5, and the top end of the transmission rod 9.7 is rotatably installed on the end of the conveying roller of the inner side end of the separation conveying belt 5.2, so that the transmission sleeve 9.5 follows the rotating stroke of the second incomplete gear 9.6, and the separation conveying belt 5.2 is driven to overturn by the transmission rod 9.7.

[0059] In use, the layered conveying belt 5.1 is driven to rotate by the belt pulley assembly, the conveying roller of the layered conveying belt is driven to rotate by the belt pulley assembly, the first pulley 9.1 is driven to rotate by the rotating rod, the first gear 9.2 is driven to rotate by the first pulley 9.1, the second gear 9.3 is driven to rotate by the first gear 9.2, the first incomplete gear 9.4 is driven to rotate by the second gear 9.3, the first incomplete gear 9.4 starts to mesh with the second incomplete gear 9.6, the first incomplete gear 9.4 continuously rotates and drives the second incomplete gear 9.6 to rotate, the second incomplete gear 9.6 synchronously rotates the transmission sleeve 9.5, and the transmission sleeve 9.5 synchronously rotates the conveying roller of the inner side end of the separation conveying belt 5.2 through the transmission rod 9.7, and the conveying rollers of the group rotate around the axis of the conveying roller of the outer side end of the separation conveying belt 5.2 to overturn, so as to realize the effect that the separation conveying belt 5.2 overturns upward to discharge the material;

[0060] In this process, the separation conveying belt 5.2 overturns upward, the bottom thereof is separated from the lower layer of material, an empty space is left above the lower layer of material, the volatilization area of the lower layer of material is increased, and the external cold air can enter the empty space to assist in accelerating the volatilization of the moisture of the lower layer of material.

[0061] When the first incomplete gear 9.4 and the second incomplete gear 9.6 are out of meshing state, the separation conveying belt 5.2 starts to overturn downward to the original state under the action of its own gravity, the transmission rod 9.7 follows the downward overturning, the transmission rod 9.7 drives the transmission sleeve 9.5 to overturn downward, and the transmission sleeve 9.5 drives the second incomplete gear 9.6 to overturn downward to the initial position through the rotating rod;

[0062] In this process, the transfer belt 5.3 is driven by the conveying roller at the inner end of the separation conveying belt 5.2 to synchronously turn down to a downwardly inclined state, at which time the upper layer of materials intercepted by the transfer belt 5.3 falls onto the separation conveying belt 5.2.

[0063] The end of the conveying roller at the inner end of the separation conveying belt 5.2 is fixedly installed with a transmission gear 10, and the inner side of the baffle of the conveying mechanism 1 is symmetrically provided with a swing groove 11, which includes an inner groove body 11.1 arranged in a fan ring shape and an outer groove body 11.2 arranged in a fan shape. The width of the inner groove body 11.1 is adapted to the swing range of the transmission gear 10, so that the transmission gear 10 can swing along the arc-shaped inner wall of the inner groove body 11.1. The arc-shaped inner wall of the outer groove body 11.2 is adapted to the swing range of the transmission rod 9.7, so that the transmission rod 9.7 can swing inside the outer groove body 11.2.

[0064] In order to realize the effect that the conveying belt of the separation conveying belt 5.2 reversely conveys materials in the swing stroke, the arc-shaped inner wall of the inner groove body 11.1 is provided with a receiving groove with a "convex" cross section. The inside of the larger cavity of the receiving groove is sequentially installed from the inside to the outside with a telescopic spring 12 and a driving tooth block 13. The inner end of the driving tooth block 13 outwardly protrudes to form a limiting ring matched with the shape of the larger cavity of the receiving groove. The outer end of the driving tooth block 13 is arranged in a right-angled trapezoidal shape. The driving tooth blocks 13 on the two groups of inner groove bodies 11.1 arranged oppositely are respectively installed on the opposite arc-shaped inner walls of the inner groove bodies 11.1, and the right-angled ends of the two groups of driving tooth blocks 13 are respectively arranged at the upper and lower ends.

[0065] When the conveying roller at the inner end of the separation conveying belt 5.2 drives the transmission gear 10 to swing upward synchronously, the transmission gear 10 moves upward along the inner wall inside the inner groove body 11.1. The transmission gear 10 on the same side as the driving tooth block 13 with the right-angled end arranged downward starts to mesh with the driving tooth block 13 one by one, and is driven by the driving tooth block 13 to turn over. The transmission gear 10 drives the separation conveying belt 5.2 to rotate counterclockwise, and assists the materials on the separation conveying belt 5.2 to accelerate to fall off.

[0066] In this process, the transmission gear 10 on the same side as the driving tooth block 13 with the right-angled end arranged upward is in the swing stroke. The transmission gear 10 on the same side as the driving tooth block 13 abuts against the lower inclined surface of the driving tooth block 13 on the same side. Under the guidance of the inclined surface, the driving tooth block 13 on the same side is gradually squeezed into the receiving groove.

[0067] When the transmission gear 10 is driven by the transmission roller at the inner side end of the separation conveyor belt 5.2 to synchronize the downward swing, the transmission gear 10 moves downward along the inner wall inside the inner groove body 11.1, and the transmission gear 10 on the same side as the driving tooth block 13 with the right-angled end upward starts to mesh with the driving tooth block 13 one by one, is driven by the driving tooth block 13 to rotate counterclockwise, and the transmission gear 10 drives the separation conveyor belt 5.2 to rotate counterclockwise through the transmission roller, thereby assisting the material on the separation conveyor belt 5.2 to accelerate and fall off.

[0068] During this process, the transmission gear 10 on the same side as the driving tooth block 13 with the right-angled end downward is in the following downward swing stroke, the transmission gear 10 on the same side abuts against the upper inclined surface of the driving tooth block 13, and under the guidance of the inclined surface, the driving tooth block 13 on the same side is gradually squeezed into the receiving groove.

[0069] In order to convey the upper layer of material back to the conveyor belt of the conveying mechanism 1, the inlet of the delay channel 7.1 is aligned with the discharge end of the separation conveyor belt 5.2, so that the upper layer of hydroxypropyl methyl cellulose can fall into the delay channel 7.1 after falling off the separation conveyor belt 5.2 and fall onto the conveying mechanism 1.

[0070] The inlet of the upward conveying channel 7.2 is arranged below the separation conveyor belt 5.2, and the edge of the inlet of the upward conveying channel 7.2 is chamfered, so that the material at the edge of the inlet of the upward conveying channel 7.2 can easily enter the upward conveying channel 7.2 under the guidance of the inclined surface of the chamfer.

[0071] The guiding mechanism 6 further comprises a blocking plate 14 and a guiding inclined surface 15 protruding upward at the top end of the guiding block 7, the blocking plate 14 is arranged at the top of the guiding block 7 along the edge of the top end of the guiding block 7, the blocking plate 14 intercepts the upper layer of material falling from the separation conveyor belt 5.2 at the top of the guiding block 7, the bottom end of the guiding inclined surface 15 is connected with the edge of the inlet of the delay channel 7.1, and the upper layer of material falling on the top of the guiding block 7 can smoothly enter the delay channel 7.1 for conveying under the action of the guiding inclined surface 15.

[0072] In order to accelerate the lower layer of material into the interior of the upward conveying channel 7.2, the inner side surface of the transmission rod 9.7 is provided with a pressing plate 16 through a sliding connection assembly 18, and the bottom end of the pressing plate 16 is provided in a column structure, so that when the bottom end of the pressing plate 16 abuts against the surface of the guiding block 7, the bottom end of the pressing plate 16 can be fitted with the inclined surface of the guiding block 7, and the lower layer of material on the inclined surface of the guiding block 7 can be intercepted to reduce the material falling back onto the conveying mechanism 1 during the pressing process of the pressing plate 16.

[0073] The bottom end of the pressing plate 16 is rotatably provided with a steering rod 17, and the top end of the steering rod 17 is rotatably provided at the end of the transmission roller at the inner side end of the separation conveyor belt 5.2, so that the angle between the pressing plate 16 and the steering rod 17 can be adjusted.

[0074] The sliding connection assembly 18 comprises a limiting sliding groove 18.1, a limiting block 18.2, a reset spring 18.3 and a connecting rod 18.4, the limiting sliding groove 18.1 is arranged on the inner side of the transmission rod 9.7, the limiting block 18.2 is slidingly installed in the limiting sliding groove 18.1, the reset spring 18.3 abuts between the limiting sliding groove 18.1 and the limiting block 18.2, the connecting rod 18.4 is installed on the limiting block 18.2, and the outer side end of the connecting rod 18.4 extending out of the limiting sliding groove 18.1 is rotationally connected with the top end of the transmission rod 9.7. The limiting sliding groove 18.1 provides space for adjusting the position of the limiting block 18.2, thereby providing displacement space for adjusting the position of the top end of the pressing plate 16, thereby assisting in realizing the position-adjustable effect of the pressing plate 16, and effectively enhancing the pressing effect of the pressing plate 16.

[0075] In use, when the separation conveying belt 5.2 is turned upward, the upper layer of materials on the top of the separation conveying belt 5.2 falls onto the top of the guide block 7, and under the guidance of the guide slope 15, the upper layer of materials on the top of the guide block 7 enters the inside of the guide block 7 through the feeding port of the delay channel 7.1, and falls back to the top of the conveying mechanism 1 through the discharging port of the delay channel 7.1;

[0076] In this process, as the separation conveying belt 5.2 is turned upward, the pressing plate 16 is also turned upward under the driving of the limiting sliding groove 18.1 and the connecting rod 18.4, the reset spring 18.3 pushes the limiting block 18.2 to move to the innermost side in the limiting sliding groove 18.1, and the limiting block 18.2 drives the top end of the pressing plate 16 to move to the innermost side;

[0077] In this process, the materials in the lower conveying channel 4 are conveyed and accumulated on the slope of the guide block 7 by the conveying mechanism 1, and as the pressing plate 16 is turned upward, the space above the slope of the guide block 7 increases, so that the height of the materials that can be accumulated on the slope of the guide block 7 increases.

[0078] When the separation conveying belt 5.2 is turned downward, the transmission rod 9.7 drives the pressing plate 16 and the connecting rod 18.4 to be synchronously turned downward through the limiting sliding groove 18.1 and the conveying roller, and when the bottom end of the pressing plate 16 and the connecting rod 18.4 rotationally connected with the slope of the guide block 7 abuts, the separation conveying belt 5.2 continues to be turned downward, the connecting rod 18.4 starts to rotate clockwise, and the bottom end of the connecting rod 18.4 and the pressing plate 16 slide along the slope of the guide block 7 to the obliquely upward direction;

[0079] In this process, the outer end of the pressure plate 16 begins to displace outwardly and press the return spring 18.3, the angle between the pressure plate 16 and the connecting rod 18.4 increases, the pressure plate 16 gradually displaces upwardly through the feed opening of the passage 7.2, and the angle between the pressure plate 16 and the inclined surface of the guide block 7 gradually decreases, so that the space between the pressure plate 16 and the guide block 7 decreases, in this way, the material located below the pressure plate 16 is accelerated and extruded into the upward passage 7.2 by the pressure plate 16.

[0080] The above description is merely preferred embodiments of the present application, but not to limit the present application, any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A hydroxypropyl methylcellulose drying apparatus, characterized by, include: Conveying mechanism (1), which is used to transport hydroxypropyl methylcellulose through the drying area of ​​the drying device; A layering mechanism (2) is set on a baffle inside the drying area of ​​the conveying mechanism (1). The layering mechanism (2) divides the space above the conveying mechanism (1) into an upper conveying channel (3) and a lower conveying channel (4). The layering mechanism (2) includes a transmission component (5) for conveying hydroxypropyl methylcellulose within the upper transmission channel (3); The transmission component (5) includes a layered conveyor belt (5.1) that is connected to the transmission mechanism (1) via a pulley assembly, a separation conveyor belt (5.2) that is connected to the layered conveyor belt (5.1) via a first transmission assembly (9), and a transfer belt (5.3) disposed between the layered conveyor belt (5.1) and the separation conveyor belt (5.2). The two ends of the transfer belt (5.3) are respectively sleeved on the ends of the conveyor rollers of the layered conveyor belt (5.1) and the separation conveyor belt (5.2) via bearings, and the two ends of the transfer belt (5.3) are respectively slidably engaged with the ends of the layered conveyor belt (5.1) and the separation conveyor belt (5.2). The layered conveyor belt (5.1) is driven to run under the drive of the pulley assembly, and the large pulley on the transmission mechanism (1) drives the small pulley on the layered conveyor belt (5.1) to rotate, so that the transmission speed of the transmission component (5) is greater than the transmission speed of the transmission mechanism (1). The guiding mechanism (6) includes a guide block (7), which is aligned with the top of the feeding end of the conveying component (5) to form a delay channel (7.1). The discharge end of the delay channel (7.1) is in contact with the surface of the conveyor belt of the conveying mechanism (1), so that the bottom end of the guide block (7) can intercept the lower layer of hydroxypropyl methylcellulose. A gap is left between the discharge port of the delay channel (7.1) and the surface of the conveyor belt of the conveying mechanism (1). The delay channel (7.1) is used to reverse the transport of hydroxypropyl methylcellulose in the upper conveying channel (3) to the lower conveying channel (4). An upward channel (7.2) is interspersed between the delay channels (7.1). The upward channel (7.2) is used to increase the conveying height of hydroxypropyl methylcellulose in the lower conveying channel (4). The outlet of the delay channel (7.1) and the outlet of the upward channel (7.2) are arranged sequentially along the material conveying direction.

2. The hydroxypropyl methylcellulose drying apparatus of claim 1, wherein, The layering mechanism (2) also includes a heat source pipe (8) inserted inside the transmission component (5) along the width direction of the transmission mechanism (1), and the open ends of the heat source pipe (8) are all installed through the baffle of the transmission mechanism (1).

3. The hydroxypropyl methylcellulose drying apparatus of claim 1, wherein, The first transmission assembly (9) comprises a first pulley (9.1) in transmission connection with the layered conveyor belt (5.1) through a pulley assembly, a first gear (9.2) on the same rotating shaft as the first pulley (9.1), a second gear (9.3) in transmission engagement with the first gear (9.2), a first incomplete gear (9.4) on the same rotating shaft as the second gear (9.3), a transmission sleeve (9.5) sleeved on the end of the conveyor roller of the separation conveyor belt (5.2), a second incomplete gear (9.6) fixedly installed on the outer end of the transmission sleeve (9.5), and a transmission rod (9.7) fixedly installed on the inner end of the transmission sleeve (9.5), wherein the first incomplete gear (9.4) and the second incomplete gear (9.6) are intermittently engaged.

4. The hydroxypropyl methylcellulose drying apparatus of claim 3, wherein, The separation conveyor belt (5.2) is fixedly installed with a transmission gear (10) near the conveyor roller end of the intermediate conveyor belt (5.3), the inner side of the baffle of the conveying mechanism (1) is provided with an oscillating groove (11), the oscillating groove (11) comprises an inner groove body (11.1) arranged in a fan ring shape and an outer groove body (11.2) arranged in a fan shape, the width of the inner groove body (11.1) is adapted to the oscillation amplitude of the transmission gear (10), the arc-shaped inner wall width of the outer groove body (11.2) is adapted to the oscillation amplitude of the transmission rod (9.7), the arc-shaped inner wall of the inner groove body (11.1) is inserted with a driving tooth block (13) which can displace along the radius of the outer groove body (11.2), and the outer end of the driving tooth block (13) is arranged in a right trapezoidal shape, and the driving tooth blocks (13) on the opposite two groups of inner groove bodies (11.1) are respectively installed on the opposite arc-shaped inner walls of the inner groove bodies (11.1).

5. The HPMC drying apparatus of claim 4, wherein, The feed inlet of the delay channel (7.1) is aligned with the discharge end of the separation conveyor belt (5.2), and the feed inlet of the upward moving channel (7.2) is arranged below the separation conveyor belt (5.2).

6. The hydroxypropyl methylcellulose drying apparatus of claim 5, wherein, The guiding mechanism (6) further comprises a material blocking plate (14) arranged along the top end edge of the guiding block (7) and a guiding inclined surface (15) formed by the upward protrusion of the top of the guiding block (7), and the bottom end of the guiding inclined surface (15) is connected with the edge of the feed inlet of the delay channel (7.1).

7. The HPMC drying apparatus of claim 3, wherein, The inner side of the transmission rod (9.7) is rotatably installed with a material pressing plate (16) through a sliding connection assembly (18), the bottom end of the material pressing plate (16) is rotatably installed with a steering rod (17), and the top end of the steering rod (17) is rotatably installed on the end of the conveyor roller of the inner end of the separation conveyor belt (5.2).

8. The hydroxypropyl methylcellulose drying apparatus of claim 7, wherein, The sliding connection assembly (18) comprises a limiting sliding groove (18.1) arranged on the inner side of the transmission rod (9.7), a limiting block (18.2) slidingly installed in the limiting sliding groove (18.1), a return spring (18.3) abuttingly installed between the limiting sliding groove (18.1) and the limiting block (18.2), and a connecting rod (18.4) installed on the limiting block (18.2), and the outer end of the connecting rod (18.4) extends out of the limiting sliding groove (18.1) and is rotatably connected with the top end of the transmission rod (9.7).

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