Drying equipment for quartz stone production

Abstract

The invention relates to the technical field of drying equipment, and discloses drying equipment for quartz stone production, which comprises an outer shell and a drying machine, the drying machine comprises a roller rotationally arranged on the outer shell, and the drying machine further comprises a plurality of groups of lifting plates, and the lifting plates are arranged at intervals along the axis direction of the roller and are uniformly distributed on the inner wall of the roller in the circumferential direction; the twisting mechanism is arranged on the roller, the twisting mechanism comprises fixing frames which are fixed to the outer wall of the roller and are in one-to-one correspondence with the lifting plates in number and rotating shafts rotationally connected to the fixing frames, and one ends of the rotating shafts penetrate into the roller and are fixed to the corresponding lifting plates. By arranging the twisting mechanism and the sliding mechanism, the angle of the lifting plate is adjusted, the lifting plate is in a vertical state, the axial movement speed of materials is reduced, the residence time of the materials in the roller is prolonged, the heat exchange time of the materials in a low-temperature area is prolonged, when the lifting plate is in a spiral state, the materials are rapidly pushed to pass through a high-temperature area, and the residence time is shortened; and invalid heat energy loss is reduced.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of drying equipment, in particular to drying equipment for quartz stone production. BACKGROUND

[0002] In quartz stone production, a large amount of surface water and part of fissure combined water is adsorbed in the process of mining and crushing of natural quartz ore, and the existence of the water will affect subsequent key processes such as purification and melting. Therefore, a drum dryer is generally used to realize dehydration treatment of quartz stone materials. The quartz stone materials are sent into a rotating drum through a feeding port, hot air in the drum contacts the materials to promote rapid evaporation of water in the materials, and the rotation of the drum realizes drying of the quartz stone materials.

[0003] The existing drum dryer for rapid drying disclosed in CN107166919A comprises a rotating drum, an air guide device, a heating device, a feeding device, a drying device, a discharging device, a rotating drum supporting device, a rotating drum driving device, a walking device and a controller. The rotating drum is horizontally placed, the air guide device is installed on the left side of the rotating drum, the heating device is installed below the air guide device, the heating device, the air guide device and the drying device are connected, the feeding device is connected with the rotating drum, the feeding device is installed on the left side of the rotating drum, the drying device is installed inside the rotating drum and can rotate relative to the rotating drum, the discharging device is installed on the right side of the shell and connected with the rotating drum, the rotating drum supporting device is installed below the rotating drum, and the rotating drum driving device is installed below the rotating drum. Although the above technical solution can dry the materials through the drying device, the suction pipe of the drying device sucks water vapor generated in the drying process, and the water vapor is discharged from the rotating drum under the action of the air guide device, so that the function of rapid drying is realized.

[0004] However, in the prior art, the drum dryer usually drives the movement of the materials by using a helical lifting plate with a static angle. Specifically, after the quartz stone materials enter the rotating drum from the feeding end, the lifting plate forces the materials to move along the helical track to the discharging end through periodic lifting and throwing actions. However, in the initial stage of drying, the temperature of the hot air in the drum has not reached a stable working condition. At this time, if the included angle between the lifting plate and the axis of the drum is too large, the materials will quickly slip due to the centrifugal force, and the axial movement speed will be too fast, which will cause the effective hot air flow contact time of the quartz stone in the low-temperature zone to be insufficient, resulting in insufficient drying. When the drying enters the middle and later stages, the temperature in the drum has stabilized to a set high temperature. At this time, if the angle of the lifting plate is still maintained at a fixed value, although the residence time of the materials can be prolonged to ensure water removal, the quartz stone will stay in the high-temperature zone for too long, the surface hydroxyl will be excessively removed, the lattice defect rate will increase, and thus the quality of the dried quartz stone will be affected, and energy will be wasted. SUMMARY

[0005] The quartz stone production drying equipment aims to solve the problems of insufficient drying in the early stage of drying due to the too large angle and the fast axial movement speed of the quartz stone, and the energy waste in the middle and late stages of drying due to the fixed angle of the existing drum dryer.

[0006] The quartz stone production drying equipment adopts the following technical scheme:

[0007] The quartz stone production drying equipment comprises:

[0008] An outer shell;

[0009] A dryer comprising a drum rotatably arranged on the outer shell, further comprising:

[0010] A plurality of lifting plates are arranged, and the plurality of lifting plates are arranged in the axial direction of the drum and uniformly distributed in the circumferential direction of the inner wall of the drum;

[0011] A torsion mechanism is arranged on the drum, and the torsion mechanism comprises a fixed frame fixed to the outer wall of the drum and corresponding to the number of lifting plates, and a rotating shaft rotatably connected to the fixed frame, one end of the rotating shaft penetrates into the drum and is fixed to the corresponding lifting plate, and the other end of the rotating shaft is fixed with a connecting frame, a roller is rotatably arranged on the connecting frame, and a torsion spring is arranged on the rotating shaft;

[0012] A sliding mechanism is arranged on the drum, and the sliding mechanism comprises a sleeve ring slidably sleeved on the drum and a plurality of extension rods fixed in the circumferential direction of the sleeve ring, the extension rods correspond to the lifting plates arranged in the axial direction of the drum, a plurality of inclined plates are fixed on the extension rods, a balance plate is integrally arranged on the inclined plate, and the balance plate is in sliding abutment with the corresponding roller.

[0013] Further, the rotating shaft is fixed with a supporting plate, and the two ends of the torsion spring are fixed on the supporting plate and the fixed frame, respectively;

[0014] The torsion of the torsion spring makes the roller abut against the balance plate, so that the lifting plates are distributed in a vertical manner, when the sleeve ring slides to drive the displacement of the inclined plate and the balance plate, the torsion spring pushes the roller to abut against the inclined plate, and the lifting plates are distributed in a spiral manner.

[0015] Further, the drum is further provided with a regulating mechanism, and the regulating mechanism comprises a plurality of heat-conducting plates fixed in the circumferential direction of the outer wall of the drum, a notch is formed in the middle part of the heat-conducting plate, an alloy composite plate is arranged in the notch, and a connecting rod is hinged between the alloy composite plate and the sleeve ring.

[0016] Further, one end of the alloy composite plate is fixed in the notch, and the other end of the alloy composite plate is a free end.

[0017] Further, the regulating mechanism further comprises a positioning ring fixed on the roller and a plurality of insertion columns slidingly inserted into the positioning ring, one end of the insertion column being fixed with the sleeve ring.

[0018] Further, the sleeve ring, the heat conduction plate and the positioning ring are all arranged at the position of the rear end of the outer wall of the roller.

[0019] Further, the circumferential direction of the sleeve ring is further fixed with a plurality of abutting rods consistent with the number of the extension rods, the abutting rods being used for abutting and limiting the rollers.

[0020] Further, the plurality of groups of the extension rods and the abutting rods are fixedly connected with a limiting ring at the end away from the sleeve ring, the limiting ring being slidingly sleeved on the outer wall of the roller.

[0021] Further, the drying machine further comprises a hopper arranged at the front end of the roller, a heating unit arranged on the hopper and a discharge bin arranged at the rear end of the roller, the hopper and the discharge bin being fixedly installed on the outer shell through the support.

[0022] Further, the outer shell is provided with a driving unit, the driving unit being used for controlling the roller to rotate horizontally in the outer shell.

[0023] The beneficial effects of the present application are as follows:

[0024] 1. By arranging the torsion mechanism and the sliding mechanism, the included angle between the material lifting plate and the roller axis can be dynamically adjusted, the angle of the material lifting plate is adjusted, the speed of the material axial movement is slowed down in the vertical state of the material lifting plate, the residence time of the material in the roller is prolonged, the heat exchange time of the material in the low temperature zone is increased, the evaporation of the moisture is facilitated, the material is quickly pushed through the high temperature zone when the material lifting plate is in the spiral state, the residence time is shortened, the invalid heat energy loss is reduced, the quality of the quartz stone after drying is improved, and the high frequency collision between the quartz stone particles and the material lifting plate is further reduced, and the mechanical wear of the material lifting plate is reduced.

[0025] 2. By arranging the regulating mechanism, the temperature sensitive characteristics of the alloy composite plate are utilized, the temperature change in the roller can be sensed in real time and the angle of the material lifting plate is automatically adjusted, when the temperature is increased, the alloy composite plate is bent outward, the connecting rod is driven to slide the sleeve ring, the angle of the material lifting plate is adjusted to be distributed in a spiral shape, the material conveying is accelerated, the excessive residence of the material in the high temperature zone is avoided, the quality is reduced and the energy is wasted, when the temperature is reduced, the alloy composite plate is reset inward, the angle of the material lifting plate is restored to be vertical, the residence time of the material in the low temperature zone is prolonged, and the sufficient evaporation of the moisture is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is a three-dimensional structure schematic view of the present application;

[0027] Figure 2 It is a three-dimensional structure schematic view of the outer shell, the roller and the material lifting plate of the present application;

[0028] Figure 3 It is a cross-sectional view of the shell body of the application;

[0029] Figure 4 It is a perspective view of the drum, discharge bin, lifting plate, torsion mechanism, sliding mechanism and control mechanism of the application;

[0030] Figure 5 It is a cross-sectional view of the drum of the application;

[0031] Figure 6 It is a perspective view of the Figure 5 It is an enlarged view of the structure at A in the above figure;

[0032] Figure 7 It is a perspective view of the lifting plate, torsion mechanism and sliding mechanism of the application;

[0033] Figure 8 It is a perspective view of the Figure 7 It is an enlarged view of the structure at B in the above figure;

[0034] Figure 9 It is a top view of the lifting plate, rotating shaft, connecting frame, roller and sliding mechanism of the application;

[0035] Figure 10 It is a perspective view of the control mechanism of the application;

[0036] Figure 11 It is a perspective view of the lifting plate of the application in the state of adjustment;

[0037] Figure 12 It is a perspective view of the Figure 11 It is a cross-sectional view of the drum of the application.

[0038] In the figure:

[0039] 100, shell body; 200, drying machine; 201, drum; 202, hopper; 203, heating unit; 204, discharge bin; 300, lifting plate; 400, torsion mechanism; 401, fixed frame; 402, rotating shaft; 403, connecting frame; 404, roller; 405, torsion spring; 406, supporting plate; 500, sliding mechanism; 501, sleeve ring; 502, extension rod; 503, inclined plate; 504, balance plate; 505, abutting rod; 506, limiting ring; 600, control mechanism; 601, heat-conducting plate; 602, notch; 603, alloy composite plate; 604, connecting rod; 605, positioning ring; 606, insertion column; 700, driving unit. DETAILED DESCRIPTION

[0040] In order to make the above objectives, characteristics and advantages of the present application more apparent, more comprehensible, the specific embodiments of the present application will be described in detail below with reference to the accompanying drawings.

[0041] With reference to Figures 1-3 The present application provides a drying equipment for producing quartz stone, comprising:

[0042] An outer shell 100;

[0043] A drying machine 200, the drying machine 200 comprising a roller 201 rotatably arranged on the outer shell 100, a hopper 202 arranged at the front end of the roller 201, a heating unit 203 arranged on the hopper 202, and a discharge bin 204 arranged at the rear end of the roller 201, the hopper 202 and the discharge bin 204 are both fixedly installed on the outer shell 100 through a support, the outer shell 100 is provided with a driving unit 700, the driving unit 700 is used for controlling the roller 201 to rotate horizontally in the outer shell 100, and the outer shell 100 is further provided with a controller, the controller is used for starting and stopping the heating unit 203 and the driving unit 700.

[0044] With reference to Figures 4-9 Further comprising:

[0045] A material lifting plate 300, a plurality of groups of the material lifting plate 300 are arranged along the axial direction of the roller 201 and are uniformly distributed in the circumferential direction of the inner wall of the roller 201.

[0046] A torsion mechanism 400 arranged on the roller 201, the torsion mechanism 400 comprising a fixing frame 401 fixed to the outer wall of the roller 201 and corresponding to the number of the material lifting plate 300 in one-to-one correspondence, and a rotating shaft 402 rotatably connected to the fixing frame 401 through a bearing, one end of the rotating shaft 402 penetrates into the roller 201 and is fixed to the corresponding material lifting plate 300, the other end of the rotating shaft 402 is fixed with a connecting frame 403, a roller 404 is rotatably installed on the side of the connecting frame 403 away from the rotating shaft 402, and a torsional spring 405 is arranged on the rotating shaft 402, each group of the material lifting plate 300 is rotatably connected to the fixing frame 401 of the outer wall of the roller 201 through the rotating shaft 402, and the torsional spring 405 arranged on the rotating shaft 402 can dynamically adjust the included angle between the material lifting plate 300 and the axis of the roller 201.

[0047] The sliding mechanism 500 is arranged on the roller 201, and the sliding mechanism 500 comprises a sleeve ring 501 sleeved on the roller 201 and a plurality of groups of extension rods 502 fixed in the circumferential direction of the sleeve ring 501, the extension rods 502 correspond to the material lifting plates 300 arranged in the axial direction of the roller 201, a plurality of groups of inclined plates 503 are fixed on the extension rods 502 at intervals, the inclined plates 503 are integrally provided with balance plates 504, the balance plates 504 slide against the corresponding rollers 404, the inclined plates 503 and the balance plates 504 on the extension rods 502 form a gradient track, when the sleeve ring 501 moves along the axis of the roller 201, the extension rods 502 drive the inclined plates 503 and the balance plates 504 to translate synchronously, so that the positions of the inclined plates 503 and the balance plates 504 change relative to the positions of the rollers 404, the rollers 404 slide on the surfaces of the balance plates 504 to the inclined plates 503 and slide against the inclined plates 503 under the control of the torsion of the torsional spring 405, at this time, the rollers 404 drive the connecting frame 403 and the rotating shaft 402 to rotate, so as to realize gradient adjustment of the angle of the material lifting plates 300.

[0048] Specifically, referring to Figure 6 and Figure 8 , the rotating shaft 402 is fixed with a supporting plate 406, and the two ends of the torsional spring 405 are fixed on the supporting plate 406 and the fixed frame 401 respectively, the torsion of the torsional spring 405 makes the roller 404 abut against the surface of the balance plate 504, and the material lifting plates 300 keep vertical distribution under the action of the torsion of the torsional spring 405, after the material enters the roller 201, the material mainly moves through the rotation of the roller 201, and the axial movement speed is low, in this state, the contact time of the material with the hot gas flow increases, and the water evaporation efficiency is improved, when the sleeve ring 501 slides along the axial direction of the roller 201, the inclined plates 503 and the balance plates 504 move synchronously, the balance plates 504 gradually separate from the abutment of the rollers 404, the roller 404 slides against the inclined surface of the inclined plate 503 under the control of the torsion of the torsional spring 405, and finally the adjustment of the angle of the material lifting plates 300 is realized, so that the material lifting plates 300 are distributed in a spiral shape.

[0049] Among them, referring to Figures 8-9 , the circumferential direction of the sleeve ring 501 is also fixed with a plurality of abutting rods 505 consistent with the number of the extension rods 502, the abutting rods 505 are used for abutting and limiting the rollers 404, when the balance plates 504 slide against the corresponding rollers 404, the abutting rods 505 abut against the other sides of the rollers 404, thereby playing a role of limiting the angle of the material lifting plates 300, it should be noted that the abutting rods 505 do not contact the connecting frame 403.

[0050] Further, referring to Figure 9The plurality of extension rods 502 and the abutting rod 505 are fixedly connected with a limiting ring 506 away from one end of the sleeve ring 501, the limiting ring 506 is slidingly sleeved on the outer wall of the roller 201, the limiting ring 506 can be made of self-lubricating material, and the limiting ring 506 plays a role of supporting and guiding the extension rod 502 and the abutting rod 505.

[0051] With reference to Figures 10-12 The roller 201 is further provided with a regulating mechanism 600, the regulating mechanism 600 comprises a plurality of heat-conducting plates 601 fixedly arranged along the outer wall of the roller 201 in a circumferential direction, a notch 602 is formed in the middle of the heat-conducting plate 601, an alloy composite plate 603 is arranged in the notch 602, and a connecting rod 604 is hingedly connected between the alloy composite plate 603 and the sleeve ring 501. Specifically, one end of the alloy composite plate 603 is fixed in the notch 602, and the other end of the alloy composite plate 603 is a free end. The alloy composite plate 603 can be made of a nickel-titanium-based double-path memory alloy material. The nickel-titanium-based double-path memory alloy material is subjected to a specific heat treatment process, and the initial shape at low temperature and the bending shape at high temperature are preset. The heat in the roller 201 is conducted to the heat-conducting plate 601 through the cylinder wall, and the heat-conducting plate 601 transmits the heat to the alloy composite plate 603. When the temperature in the roller 201 rises, the stress generated in the phase change process of the alloy composite plate 603 drives the volume change and shape restoring force of the alloy composite plate 603. The free end of the alloy composite plate 603, which is originally in a relatively flat state, will be bent and deformed in a direction away from the axis of the roller 201, thereby being converted into a pushing force on the sleeve ring 501 through the hinged connecting rod 604, forcing the sleeve ring 501 to slide along the axial direction of the roller 201, so that the angle of the material lifting plate 300 is adjusted to a spiral distribution, the speed of axial movement of the material is accelerated, and the residence time in the high-temperature zone is shortened. When the temperature in the roller 201 decreases, the alloy composite plate 603 undergoes reverse phase change from austenite to martensite, and the shape restoring force causes the free end to reset inward. The connecting rod 604 pulls the sleeve ring 501 back to the initial position, the angle of the material lifting plate 300 returns to the vertical state, the material moving speed slows down, the heat exchange time in the low-temperature zone is prolonged, and sufficient evaporation of water is ensured.

[0052] It should be noted that the regulating mechanism 600 further comprises a positioning ring 605 fixed on the roller 201 and a plurality of insertion columns 606 slidingly inserted into the positioning ring 605. One end of the insertion column 606 is fixed to the sleeve ring 501, and the other end of the insertion column 606 is limited to penetrate through a corresponding hole slot formed in the positioning ring 605. The insertion column 606 moves axially along the corresponding hole slot formed in the positioning ring 605, ensures that the movement path of the sleeve ring 501 is parallel to the axis of the roller 201, and plays a role of guiding the sleeve ring 501.

[0053] The sleeve ring 501, the heat conduction plate 601 and the positioning ring 605 are all arranged at the rear end of the outer wall of the roller 201, the heating unit 203 is arranged on the hopper 202 at the front end of the roller 201, in the initial stage of drying, in the low-temperature stage, the alloy composite plate 603 remains flat, the sleeve ring 501 is at the initial position at the rear end of the outer wall of the roller 201, and a plurality of groups of the material lifting plates 300 are vertically distributed, at this time, the axial movement speed of the material in the roller 201 is slow, mainly rolling under the rotation of the roller 201, so that the residence time of the material in the low-temperature zone is prolonged, which is beneficial to the evaporation of water, with the hot air flowing from front to back and accumulating heat, when entering the middle and later stages, in the high-temperature stage, the temperature of the rear half of the roller 201 is increased, the heat conduction plate 601 quickly conducts heat to the alloy composite plate 603, the sleeve ring 501 is controlled to move, the angle of the plurality of groups of the material lifting plates 300 is changed to be spirally distributed, the change of the angle of the material lifting plates 300 accelerates the axial movement speed of the material in the roller 201, and the material can quickly pass through the high-temperature zone, and the high-frequency collision in the local part is reduced, and the mechanical wear of the material lifting plates 300 is further reduced.

[0054] When the drying is completed, the temperature in the roller 201 is decreased, at this time, the material lifting plates 300 are restored to be vertically distributed, the vertically distributed material lifting plates 300 are more easy to make the material naturally slide under the action of gravity, the possibility of the material adhering to the material lifting plates 300 is reduced, so that the workload during cleaning is reduced, and the cleaning time is shortened.

[0055] The working principle of the drying equipment for producing quartz stone is as follows:

[0056] The starting driving unit 700 drives the drum 201 to rotate horizontally in the outer shell 100. The quartz stone material enters the drum 201 through the hopper 202. The heating unit 203 on the hopper 202 heats the drum 201 to generate a hot air flow. The hot air flow flows from the front end to the rear end of the drum 201 along with the material. In the initial stage of drying, the torsional force generated by the torsion spring 405 causes the roller 404 to abut against the surface of the balance plate 504. A plurality of material lifting plates 300 are kept in a vertical distribution. At this time, after the material enters the drum 201, it mainly relies on the rotation of the drum 201 for tumbling movement, and the axial movement speed is low. As the hot air flow flows backward and continuously accumulates heat, the temperature of the rear half of the drum 201 gradually rises. The heat in the drum 201 is transferred to the heat-conducting plate 601 arranged at the rear end of the drum 201 through heat conduction. The heat-conducting plate 601 conducts heat to the alloy composite plate 603. The alloy composite plate 603 deforms in the direction away from the drum 201. The alloy composite plate 603 pushes the sleeve ring 501 to slide along the drum 201 through the connecting rod 604. When the sleeve ring 501 slides, it drives the circumferentially fixed extension rod 502 to move synchronously. The inclined plate 503 on the extension rod 502 also moves with the balance plate 504. The balance plate 504 gradually separates from the roller 404. Under the control of the torsional force of the torsion spring 405, the roller 404 starts to slide along the inclined surface of the inclined plate 503. The sliding of the roller 404 drives the connecting frame 403 and the rotating shaft 402 to rotate, so that the material lifting plate 300 gradually changes from a vertical state to a spiral distribution. When the material lifting plate 300 is in a spiral distribution, the material in the drum 201 can pass quickly.

[0057] After drying is completed, the temperature in the drum 201 decreases, and the alloy composite plate 603 resets inward due to the decrease in temperature. The sleeve ring 501 is pulled back by the connecting rod 604. During the resetting process of the sleeve ring 501, the inclined plate 503 and the balance plate 504 return to the initial position. The roller 404 abuts against the balance plate 504 again under the action of the torsion spring 405. The angle of the material lifting plate 300 decreases to a vertical state.

[0058] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, not to limit it. Although the present application has been described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or replaced equivalently without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A drying device for quartz stone production, comprising: an outer shell (100); A dryer (200), comprising a drum (201) rotatably disposed on an outer shell (100), characterized in that it further comprises: There are multiple groups of material lifting plates (300), which are arranged at intervals along the axis of the drum (201) and are evenly distributed on the circumference of the inner wall of the drum (201); The twisting mechanism (400) is arranged on the roller (201), and the twisting mechanism (400) includes a fixing frame (401) fixed on the outer wall of the roller (201) and having the same number and one-to-one correspondence with the material lifting plates (300), and a rotating shaft (402) rotatably connected to the fixing frame (401), one end of the rotating shaft (402) passes through the roller (201) and is fixed to the corresponding material lifting plate (300), and the other end of the rotating shaft (402) is fixed with a connecting frame (403), a roller (404) is rotatably mounted on the connecting frame (403), and a torsion spring (405) is provided on the rotating shaft (402); A sliding mechanism (500) is arranged on the roller (201), and the sliding mechanism (500) includes a ring (501) slidably sleeved on the roller (201) and multiple groups of extension rods (502) fixed along the circumference of the ring (501), the extension rods (502) corresponding to the lifting plates (300) arranged in the axial direction of the roller (201), multiple groups of inclined plates (503) are fixed at intervals on the extension rods (502), and a balancing plate (504) is integrally arranged on the inclined plate (503), and the balancing plate (504) is in sliding contact with the corresponding roller (404).

2. The drying equipment for quartz stone production according to claim 1, characterized in that: A supporting plate (406) is fixed on the rotating shaft (402), and two ends of the torsion spring (405) are respectively fixed on the supporting plate (406) and the fixing frame (401); The torsion force of the torsion spring (405) causes the roller (404) to abut against the balancing plate (504), so that the lifting plate (300) is distributed vertically. When the ring (501) slides to drive the inclined plate (503) and the balancing plate (504) to move, the torsion spring (405) pushes the roller (404) to abut against the inclined plate (503), and the lifting plate (300) is distributed in a spiral shape.

3. The drying equipment for quartz stone production according to claim 1, characterized in that: The roller (201) is further provided with a regulating mechanism (600), comprising a plurality of heat conducting plates (601) fixed at intervals along the circumferential direction of the outer wall of the roller (201), a notch (602) being provided in the middle of the heat conducting plate (601), an alloy composite plate (603) being provided in the notch (602), and a connecting rod (604) being hinged between the alloy composite plate (603) and the collar (501).

4. The drying equipment for quartz stone production according to claim 3, characterized in that: One end of the alloy composite plate (603) is fixed in the notch (602), and the other end of the alloy composite plate (603) is a free end.

5. The drying equipment for quartz stone production according to claim 3, characterized in that: The regulating mechanism (600) further comprises a positioning ring (605) fixed on the roller (201) and a plurality of plug posts (606) slidably inserted on the positioning ring (605), one end of the plug post (606) being fixed to the sleeve ring (501).

6. The drying equipment for quartz stone production according to claim 5, characterized in that: The sleeve ring (501), the heat conducting plate (601) and the positioning ring (605) are all arranged on the outer wall of the drum (201) at the rear end.

7. The drying equipment for quartz stone production according to claim 1, characterized in that: The collar (501) is also fixed with abutment rods (505) in the same number as the extension rods (502) in the circumferential direction. The abutment rods (505) are used to abut and limit the roller (404).

8. The drying equipment for quartz stone production according to claim 7, characterized in that: The ends of the plurality of extension rods (502) and the abutting rods (505) away from the collar (501) are fixedly connected to a limiting ring (506), and the limiting ring (506) is slidably sleeved on the outer wall of the drum (201).

9. The drying equipment for quartz stone production according to claim 1, characterized in that: The dryer (200) further comprises a hopper (202) arranged at the front end of the drum (201), a heating unit (203) arranged on the hopper (202), and a discharge bin (204) arranged at the rear end of the drum (201); the hopper (202) and the discharge bin (204) are both fixedly mounted on the outer shell (100) via a bracket.

10. The drying equipment for quartz stone production according to claim 1, characterized in that: The outer shell (100) is provided with a driving unit (700), and the driving unit (700) is used to control the drum (201) to rotate horizontally in the outer shell (100).

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