Anti-adhesion multi-stage screening and grinding device and method for preparing gel jelly powder

Abstract

The invention relates to the technical field of material screening and grinding, in particular to an anti-adhesion multi-stage screening and grinding device and method for preparing gel jelly powder.The anti-adhesion multi-stage screening and grinding device comprises a box, and an upper grinding disc and a lower grinding disc which can rotate oppositely or oppositely are arranged in the box; a grinding gap of which the spacing is gradually reduced is formed between the upper grinding disc and the lower grinding disc from inside to outside; the traction assembly is arranged in the box body, and the traction assembly is connected with the upper grinding disc and used for pulling the upper grinding disc to move towards or away from the lower grinding disc; and the scraping structure is arranged on the side portion of the box body, a plurality of sets of jacking plates are elastically arranged on the scraping structure, the jacking plates are used for being matched with the grinding gaps, under the action of the scraping structure, gel jelly powder adhering to the upper grinding disc and the lower grinding disc can be scraped in time, and the adhesion layer is prevented from affecting the grinding effect.

Description

Technical Field

[0001] The invention relates to the technical field of material screening and grinding, in particular to an anti-adhesion multi-stage screening and grinding device and method for preparing gel jelly powder. Background Art

[0002] In modern jelly production, jelly powder is a key raw material, and its solubility properties have a decisive impact on production efficiency and product quality. By mixing jelly powder with water, it quickly forms a gel with gelling properties. After the jelly powder undergoes the steps of gelling, molding, and cooling, it is air-dried to form a hard block. While this block structure facilitates large-scale packaging and long-distance transportation, it poses a certain obstacle to subsequent production, requiring additional tools to crush and grind the powder before it can be dissolved and used.

[0003] To address this industry pain point, grinding devices are commonly used in jelly production to pre-process bulk jelly powder. Traditional grinding devices utilize opposing grinding discs, and their grinding principle is based on the synergistic effect of shear force and extrusion to produce powder particles with uniform particle size.

[0004] However, when processing high-sugar jelly powder with a sugar content exceeding 65%, conventional grinding systems present significant process bottlenecks. The glass transition temperature (Tg) of jelly powder in high-sugar systems is low (approximately 35-42°C), and the heat generated by mechanical friction during grinding (approximately 40-60°C) tends to locally soften its surface. This temperature-sensitive property causes fine powder particles to adhere to the micro-asperities of the grinding disc (Ra ≈ 1.5-3.2μm), forming a continuous adhesion layer approximately 50-200μm thick. Over time, this adhesion layer undergoes irreversible β-transformation (transitioning from an amorphous phase to an ordered crystalline phase) under repeated compression, causing its compressive strength to increase dramatically from an initial 0.8-1.2MPa to 3.5-5.2MPa, ultimately forming a dense, compacted structure. This compacted layer not only encroaches on the designed clearance of the grinding disc, reducing the effective grinding width by 30-50%, but also disrupts the hydrodynamic balance within the grinding chamber and the grinding effect. Summary of the Invention

[0005] The object of the present invention is to provide an anti-adhesion multi-stage screening and grinding device and method for preparing gel jelly powder, so as to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder, comprising: a box body, an upper grinding disc and a lower grinding disc capable of rotating relative to or in opposite directions are arranged in the box body, a grinding gap with a gradually decreasing distance from the inside to the outside is formed between the upper grinding disc and the lower grinding disc; a traction assembly, arranged in the box body, the traction assembly is connected to the upper grinding disc, and is used to pull the upper grinding disc toward or away from the lower grinding disc; a scraping structure, arranged on the side of the box body, and a plurality of lifting plates are elastically provided on the scraping structure, and the lifting plates are used to match the grinding gap.

[0007] As a further solution of the present invention: a rotating rod is coaxially fixedly installed on the upper grinding disc, the interior of the rotating rod is a hollow structure, and the gel jelly powder block can enter the grinding gap through the rotating rod; the upper grinding disc is provided with multiple groups of concentric annular grinding surfaces on the side facing the lower grinding disc, and the distance between the multiple groups of annular grinding surfaces and the lower grinding disc decreases from the inside to the outside, and two adjacent groups of annular grinding surfaces are connected by an annular bevel.

[0008] As a further solution of the present invention: a horizontal plate is provided in the box body, a rotating sleeve and a first motor are provided on the horizontal plate, and the output shaft of the first motor is connected to the rotating sleeve by a connecting belt; the rotating rod is slidably fitted with the rotating sleeve, and a guide block is provided on the circumferential outer side of the rotating sleeve, and the guide block is slidably fitted with the guide groove provided in the rotating sleeve.

[0009] As a further solution of the present invention: the traction assembly includes a first electric telescopic rod fixedly mounted on the horizontal plate and a connecting plate rotatably connected to the rotating rod, a convex ring is formed on the first electric telescopic rod, and an actuating end of the first electric telescopic rod is slidably connected to the connecting plate; a feed port is rotatably mounted on the rotating rod; the traction assembly also includes a transverse movement structure for blocking the feed port, and when the first electric telescopic rod moves, it can drive the transverse movement structure and the connecting plate to move in sequence.

[0010] As a further solution of the present invention: the transverse movement structure includes a guide part fixedly installed on the feed port, a sealing plate is sealingly and slidingly installed in the guide part, a hinged rod is connected to the sealing plate, and the end of the hinged rod away from the sealing plate is rotatably connected to a lifting plate slidably installed on the connecting plate, and the lifting plate is connected to the action end of the first electric telescopic rod via a connecting frame.

[0011] As a further solution of the present invention: the scraping structure includes a second electric telescopic rod fixedly mounted on the box body, the action end of the second electric telescopic rod is connected to a connecting plate that passes through the box body, a scraper is provided on the connecting plate, multiple groups of the lifting plates are slidingly connected to the scrapers, and the lifting plates are connected to the cylindrical springs provided in the scrapers; the annular inclined guide surface provided on the side of the upper grinding disk can guide the lifting plates and scrapers to enter between the upper grinding disk and the lower grinding disk.

[0012] As a further solution of the present invention: the scraper is arranged to be inclined along the distribution direction of the multiple groups of lifting plates and to the radial direction of the upper grinding disc.

[0013] As a further solution of the present invention: the box is provided with a filter screen and a collection bucket, the filter screen is provided with multiple groups of filter holes equidistantly arranged on the circumference, and the output end of the filter screen is connected to a spiral conveying device arranged outside the box, and the spiral conveying device is connected to the feed port.

[0014] A method for screening and grinding gel jelly powder blocks, using the above-mentioned anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder, further comprising the following steps: Step 1: Start the device and the external conveying device, the external conveying device conveys the gel jelly powder block into the rotating rod, and makes the gel jelly powder block enter the grinding gap; Step 2: The upper grinding disc and the lower grinding disc rotate relative to each other to grind the gel jelly powder block; Step 3: The ground gel jelly powder enters the filter screen for screening. The gel jelly powder that meets the production standards enters the collection bucket, and the gel jelly powder that does not meet the production standards enters the spiral conveying device and is conveyed to the rotating rod again; Step 4: After the above steps 1 to 4 are performed for a predetermined time, the traction assembly drives the upper grinding disc to move upward, and the upper grinding disc and the lower grinding disc rotate in the same direction. At this time, the scraping structure operates to scrape off the gel jelly powder adhering to the upper grinding disc and the lower grinding disc and push it to the middle of the two, so that the gel jelly powder in this part can be ground again when continuing to grind.

[0015] Compared with the prior art, the beneficial effects of the present invention are as follows: firstly, through the scraping structure, under the action of the scraper and the lifting plate, the gel jelly powder adhering to the upper grinding disc and the lower grinding disc can be scraped off in time, so as to restore the grinding effect when the upper grinding disc and the lower grinding disc are matched, and prevent the adhesion layer from β-transformation under repeated extrusion; secondly, the multiple groups of lifting plates can fit with the annular grinding surface and the annular inclined surface on the upper grinding disc, thereby further improving the scraping effect; in addition, because the scraper has a driving effect on the scraped and compacted gel jelly powder, it can be driven to the middle of the lower grinding disc, so that this part of the gel jelly powder can be ground again during the next grinding, thereby ensuring the grinding effect; through the upper grinding disc and the lower grinding disc, graded grinding can be achieved, On the one hand, it can effectively reduce the load during the grinding process, making the device more stable during the entire operation process, reducing problems such as equipment shaking and wear caused by excessive load, and greatly improving the service life and operational stability of the equipment; on the other hand, through this fine graded grinding method, it can avoid excessive friction on the gel jelly powder during one grinding, which accelerates the softening and adhesion of the gel jelly powder and reduces the formation of the adhesion layer; through the set traction component, the feed port can be sealed in time and effectively to avoid the feed port being in the on state when the upper grinding disc moves away from the lower grinding disc, causing a large amount of gel jelly powder to enter the grinding gap and produce invalid grinding, and the distance between the upper grinding disc and the lower grinding disc can be increased to provide space for the extension of the scraping structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 A schematic structural diagram of an embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder; Figure 2 A schematic diagram of the interior structure of a box in one embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder; Figure 3 for Figure 2 A magnified view of the structure at point A; Figure 4 A schematic structural diagram of the connection between the upper grinding disc and the first motor in one embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder; Figure 5 A schematic diagram of the structure of an upper grinding disc in one embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder; Figure 6 A cross-sectional view of the structure of the upper grinding disc and the lower grinding disc in one embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder; Figure 7 A schematic diagram of the structure of a traction assembly in one embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder; Figure 8 A cross-sectional view of the structure of the filter screen and the collection hopper in one embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder; Figure 9 A schematic structural diagram of a scraping structure in one embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder; Figure 10 This is a schematic diagram of the structure of the scraper and lifting plate in one embodiment of an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder.

[0017] In the figure: 1. box body; 2. screw conveyor; 3. first motor; 4. connecting belt; 5. rotating sleeve; 6. rotating rod; 7. feed port; 8. upper grinding disc; 801. annular grinding surface; 802. annular inclined surface; 803. annular inclined guide surface; 9. lower grinding disc; 10. first electric telescopic rod; 1001. convex ring; 11. connecting plate; 12. connecting frame; 13. lifting plate; 14. hinged rod; 15. sealing plate; 16. guide part; 17. filter screen; 18. collecting bucket; 19. second electric telescopic rod; 20. connecting plate; 21. scraper; 22. lifting plate; 23. cylindrical spring; 24. second motor. DETAILED DESCRIPTION

[0018] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] In addition, when an element in the present invention is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is referred to as being "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation method.

[0020] See also Figures 1 to 10 In an embodiment of the present invention, an anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder includes: a box body 1, a traction component and a scraping structure.

[0021] An upper grinding disc 8 and a lower grinding disc 9 that can rotate relative to or towards each other are provided in the box body 1, and a grinding gap with a gradually decreasing distance is formed between the upper grinding disc 8 and the lower grinding disc 9 from the inside to the outside. Specifically, a rotating rod 6 is coaxially fixedly mounted on the upper grinding disc 8, and the interior of the rotating rod 6 is a hollow structure, and the gel jelly powder block can enter the grinding gap through the rotating rod 6; the upper grinding disc 8 is provided with multiple groups of concentric annular grinding surfaces 801 on the side facing the lower grinding disc 9, and the distance between the multiple groups of annular grinding surfaces 801 and the lower grinding disc 9 decreases from the inside to the outside, and two adjacent groups of annular grinding surfaces 801 are connected by an annular inclined surface 802.

[0022] In practice, the upper grinding disc 8 and the lower grinding disc 9 rotate relative to each other, significantly increasing their relative speed. The gel jelly powder is then poured into the interior of the rotating rod 6. Thanks to the hollow design of the rotating rod 6, the gel jelly powder flows smoothly through its internal channel and falls steadily into the lower area of the upper grinding disc 8, that is, into the grinding gap set between the upper and lower grinding discs 8 and 9.

[0023] The relatively large grinding gap between the upper and lower grinding discs 8 and 9 provides initial grinding space for the gel jelly powder, allowing it to complete the coarse grinding process. Simultaneously, the relative rotation of the upper and lower grinding discs 8 and 9 imparts a certain centrifugal force to the gel jelly powder. Guided by this centrifugal force, the coarsely ground gel jelly powder automatically converges toward the grinding area with a smaller gap, thus achieving a step-by-step grinding process from coarse to fine, gradually grinding the gel jelly powder into finer particles until the desired grinding effect is achieved.

[0024] Compared with traditional grinding devices, the graded grinding of this device has significant advantages. On the one hand, graded grinding effectively reduces the load during the grinding process, making the device more stable during the entire operation process, reducing equipment shaking, wear and other problems caused by excessive load, and greatly improving the service life and operation stability of the equipment; on the other hand, through this fine graded grinding method, it avoids excessive friction on the gel jelly powder in one grinding, accelerates the softening and adhesion of the gel jelly powder, and reduces the formation of the adhesion layer.

[0025] See also Figure 3~Figure 4 A horizontal plate is provided in the box body 1, and a rotating sleeve 5 and a first motor 3 are provided on the horizontal plate. The output shaft of the first motor 3 is connected to the rotating sleeve 5 by a connecting belt 4; the rotating rod 6 is slidably fitted with the rotating sleeve 5, and a guide block is provided on the outer side of the circumference of the rotating sleeve 5, and the guide block is slidably fitted with the guide groove provided in the rotating sleeve 5.

[0026] The traction assembly is disposed in the box body 1 , and the traction assembly is connected to the upper grinding disc 8 , and is used for pulling the upper grinding disc 8 toward or away from the lower grinding disc 9 .

[0027] When the first motor 3 is working, its output shaft can drive the rotating sleeve 5 to rotate through the connecting belt 4. At this time, since the rotating sleeve 5 is connected to the rotating rod 6 by the guide block and the guide groove, when the rotating sleeve 5 rotates, the rotating rod 6 can rotate synchronously and drive the upper grinding disc 8 to rotate to ensure the grinding process. The setting of the above-mentioned guide block and the guide groove also has the following effects: when the traction assembly drives the upper grinding disc 8 to move relative to the lower grinding disc 9, the rotating rod 6 can move relative to the rotating sleeve 5 and can maintain a state of synchronous rotation with the rotating rod 6. This state firstly enables the scraping structure to operate while the upper grinding disc 8 can still be in a rotating state, so that when the scraping structure operates, the gel jelly powder adhered to the upper grinding disc 8 can be scraped off more thoroughly, thereby improving the subsequent grinding effect. Secondly, through the action of the traction assembly, the grinding gap can be fine-tuned, so that the particle size of the gel jelly powder after grinding can be different according to actual production needs, thereby improving the applicability of the device.

[0028] A feed port 7 is rotatably mounted on the rotating rod 6; the box body 1 is provided with a filter screen 17 and a collecting bucket 18, and a plurality of groups of filter holes are equidistantly arranged on the circumference of the filter screen 17, and the output end of the filter screen 17 is connected to a screw conveying device 2 arranged outside the box body 1, and the screw conveying device 2 is connected to the feed port 7; a second motor 24 is also fixedly mounted on the filter screen 17, and the output shaft of the second motor 24 is connected to the lower grinding disc 9.

[0029] It should be noted that the above-mentioned filter screen 17 and collection bucket 18 are conical in shape. During the grinding process, the ground gel jelly powder can move along the radial direction of the lower grinding disk 9 until it slides down when it moves to the side end of the lower grinding disk 9. Then the gel jelly powder can fall into the filter screen 17, and the gel jelly powder that meets the production standards enters the collection bucket 18 through the filter hole to facilitate the collection of this part of the gel jelly powder.

[0030] When the particle size of the gel jelly powder does not meet the production standard, this part of the gel jelly powder will not be able to pass through the filter hole. Since the filter screen 17 is conical, this part of the gel jelly powder can slide down along the side of the filter screen 17 until it enters the spiral conveying device 2 from the output end. The spiral conveying device 2 then conveys this part of the gel jelly powder to the rotating rod 6 for secondary grinding. The grinding accuracy of the gel jelly powder is ensured through multiple grindings.

[0031] It should also be noted that the above-mentioned screw conveying device 2 is a reference to the existing technology, and specifically includes a conveying pipe, spiral blades, a driving device and other structures. The driving device is used to drive the spiral blades to rotate, so that the material can move in the conveying pipe.

[0032] See also Figure 3~Figure 4 、 Figure 7 The traction assembly includes a first electric telescopic rod 10 fixedly mounted on the horizontal plate and a connecting plate 11 rotatably connected to the rotating rod 6, a convex ring 1001 is formed on the first electric telescopic rod 10, and the action end of the first electric telescopic rod 10 is slidably connected to the connecting plate 11; the traction assembly also includes a transverse structure for blocking the feed port 7, when the first electric telescopic rod 10 moves, it can drive the transverse structure and the connecting plate 11 to move in sequence; the transverse structure includes a guide portion 16 fixedly mounted on the feed port 7, a sealing plate 15 is sealingly and slidably mounted in the guide portion 16, and a hinged rod 14 is connected to the sealing plate 15, and the end of the hinged rod 14 away from the blocking plate 15 is rotatably connected to a lifting plate 13 slidably mounted on the connecting plate 11, and the lifting plate 13 is connected to the action end of the first electric telescopic rod 10 by a connecting frame 12.

[0033] In the initial state, the connecting plate 11 is in contact with the convex ring 1001. At this time, although the upper grinding disc 8 has a tendency to move toward the lower grinding disc 9, under the action of the gel jelly powder, the upper grinding disc 8 has an upward push-up posture, thereby ensuring the stability of the grinding gap width. As the grinding progresses, when the grinding efficiency decreases, the first electric telescopic rod 10 is controlled to move. At this time, the action end of the first electric telescopic rod 10 will move upward and drive the lifting plate 13 connected thereto to move upward relative to the connecting plate 11 through the connecting frame 12. One end of the hinged rod 14 is rotatably connected to the lifting plate 13, and the other end is rotatably connected to the blocking plate 15, so that when the lifting plate 13 moves upward, the hinged rod 14 can drive the blocking plate 15 to move toward the inside of the feed port 7 to block the feed port 7 in a timely and effective manner, thereby avoiding the feed port 7 being still in a conductive state when the upper grinding disc 8 moves away from the lower grinding disc 9, resulting in a large amount of gel jelly powder entering the grinding gap, resulting in ineffective grinding.

[0034] When the blocking plate 15 moves to completely block the feed port 7, the connecting frame 12 just fits against the lower side wall of the connecting plate 11. At this time, the connecting plate 11 can move with the connecting frame 12, thereby increasing the distance between the upper grinding disc 8 and the lower grinding disc 9 to provide space for the extension of the scraping structure.

[0035] See also Figures 9 and 10The scraping structure is arranged on the side of the box body 1, and multiple groups of lifting plates 22 are elastically arranged on the scraping structure, and the lifting plates 22 are used to match the grinding gap; the scraping structure includes a second electric telescopic rod 19 fixedly mounted on the box body 1, and the action end of the second electric telescopic rod 19 is connected to a connecting plate 20 that passes through the box body 1, and a scraper 21 is arranged on the connecting plate 20, and multiple groups of the lifting plates 22 are slidably connected to the scraper 21, and the lifting plates 22 are arranged on the The scraper 21 is connected to the cylindrical spring 23, wherein the scraper 21 is arranged radially inclined with respect to the upper grinding disc 8 along the distribution direction of the multiple groups of the lifting plates 22, and the lower end surface of the scraper 21 is coplanar with the upper end surface of the lower grinding disc 9; wherein the diameter of the cylindrical spring 23 is greater than the width of the lifting plate 22, and the end of the cylindrical spring 23 abuts and cooperates with the recessed portion provided in the upper inner wall of the scraper 21, which can prevent the end of the cylindrical spring 23 from being pushed out of the upper surface of the scraper 21, causing the connection between the lifting plate 22 and the scraper 21 to fail.

[0036] The annular inclined guide surface 803 provided on the side of the upper grinding disc 8 can guide the lifting plate 22 and the scraper 21 to enter between the upper grinding disc 8 and the lower grinding disc 9 .

[0037] When the distance between the upper grinding disc 8 and the lower grinding disc 9 meets the distance required for the scraping structure to move, the second motor 24 will drive the lower grinding disc 9 to move in the opposite direction, so that the upper grinding disc 8 and the lower grinding disc 9 can rotate in the same direction. In this state, the second electric telescopic rod 19 will move and drive the connecting plate 20 to extend toward the interior of the box 1. At this time, since the lower end surface of the scraper 21 is coplanar with the upper end surface of the lower grinding disc 9, the scraper 21 can move in contact with the upper end surface of the lower grinding disc 9, and the annular inclined portion of the upper grinding disc 8 side is The inclined guide surface 803 has a guiding effect on the lifting plate 22, so that when the lifting plate 22 touches the annular inclined guide surface 803, the lifting plate 22 can move toward the inside of the scraper 21 and compress the cylindrical spring 23. During the continuous movement of the scraper 21, in conjunction with the rotation of the upper grinding disc 8 and the lower grinding disc 9, the gel jelly powder adhering to the upper grinding disc 8 and the lower grinding disc 9 can be scraped off under the action of the scraper 21 and the lifting plate 22, so that the two can cooperate again to restore the grinding effect during grinding.

[0038] Furthermore, since multiple groups of annular grinding surfaces 801 are provided on the upper grinding disk 8, and two adjacent groups of annular grinding surfaces 801 are connected by an annular bevel 802, when the lifting plate 22 moves between the multiple groups of annular grinding surfaces 801, the corresponding lifting plate 22 can adaptively adjust its own height to ensure the fit with the annular grinding surface 801 and the annular bevel 802, thereby improving the scraping effect.

[0039] After the gel jelly powder adhered to the upper grinding disc 8 and the lower grinding disc 9 is scraped off, the gel jelly powder will fall onto the lower grinding disc 9, and most of the gel jelly powder is in a compacted state. Since the scraper 21 is arranged at an inclination along the distribution direction of the multiple groups of lifting plates 22 and the radial direction of the upper grinding disc 8, the scraper 21 cooperates with the rotation of the lower grinding disc 9 to drive the gel jelly powder that falls on the lower grinding disc 9 to the middle part of the lower grinding disc 9, so that when the upper grinding disc 8 returns to its initial position to continue grinding, this part of the compacted gel jelly powder that has been scraped off can be ground, thereby further improving the grinding effect.

[0040] It should be noted that the upward force provided by the multiple groups of columnar springs 23 on the upper grinding disc 8 is less than the gravity of the upper grinding disc 8 itself, so as to ensure that the position of the upper grinding disc 8 is more stable when the scraper 21 and the lifting plate 22 are between the upper grinding disc 8 and the lower grinding disc 9.

[0041] Based on the above arrangement, firstly, under the action of the scraper 21 and the lifting plate 22, the gel jelly powder adhering to the upper grinding disc 8 and the lower grinding disc 9 can be scraped off to restore the grinding effect when the upper grinding disc 8 and the lower grinding disc 9 are matched. Secondly, the multiple sets of lifting plates 22 can fit together with the annular grinding surface 801 and the annular inclined surface 802 on the upper grinding disc 8, thereby further improving the scraping effect. In addition, since the scraper 21 has a driving effect on the scraped and compacted gel jelly powder, it can drive it to the middle of the lower grinding disc 9, so that this part of the gel jelly powder can be ground again during the next grinding, thereby ensuring the grinding effect.

[0042] As an embodiment of the present invention, a method for screening and grinding gel jelly powder blocks is also proposed, using the above-mentioned anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder, which also includes the following steps: Step 1: Start the device and the external conveying device, the external conveying device conveys the gel jelly powder block into the rotating rod 6, and makes the gel jelly powder block enter the grinding gap; Step 2: The upper grinding disc 8 and the lower grinding disc 9 rotate relative to each other to grind the gel jelly powder block; Step 3: The ground gel jelly powder enters the filter screen 17 for screening. The gel jelly powder that meets the production standards enters the collection hopper 18, and the gel jelly powder that does not meet the production standards enters the spiral conveying device 2 and is conveyed to the rotating rod 6 again; Step 4: After the above steps 1 to 4 are performed for a predetermined time, the traction assembly drives the upper grinding disc 8 to move upward, and at the same time, the upper grinding disc 8 and the lower grinding disc 9 rotate in the same direction. At this time, the scraping structure is actuated to scrape off the gel jelly powder adhering to the upper grinding disc 8 and the lower grinding disc 9 and push it to the middle of the two, so that the gel jelly powder in this part can be ground again when continuing to grind.

[0043] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be included therein. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0044] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. An anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder, characterized in that: include: A box body is provided with an upper grinding disc and a lower grinding disc that can rotate relative to or towards each other, and a grinding gap with a gradually decreasing distance from the inside to the outside is formed between the upper grinding disc and the lower grinding disc; a traction assembly is provided in the box body, and the traction assembly is connected to the upper grinding disc and is used to pull the upper grinding disc toward or away from the lower grinding disc; a scraping structure is provided on the side of the box body, and a plurality of lifting plates are elastically provided on the scraping structure, and the lifting plates are used to match the grinding gap.

2. The anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder according to claim 1, characterized in that: A rotating rod is coaxially fixedly mounted on the upper grinding disc, and the interior of the rotating rod is a hollow structure, so that the gel jelly powder block can enter the grinding gap through the rotating rod; a plurality of groups of concentric annular grinding surfaces are provided on the side of the upper grinding disc facing the lower grinding disc, and the distance between the plurality of groups of annular grinding surfaces and the lower grinding disc decreases from the inside to the outside, and two adjacent groups of annular grinding surfaces are connected by an annular bevel.

3. The anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder according to claim 2, characterized in that: A horizontal plate is provided in the box body, and a rotating sleeve and a first motor are provided on the horizontal plate. The output shaft of the first motor is connected to the rotating sleeve by a connecting belt; the rotating rod is slidably fitted with the rotating sleeve, and a guide block is provided on the circumferential outer side of the rotating sleeve, and the guide block is slidably fitted with a guide groove provided in the rotating sleeve.

4. The anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder according to claim 3, characterized in that: The traction assembly includes a first electric telescopic rod fixedly mounted on the horizontal plate and a connecting plate rotatably connected to the rotating rod, a convex ring is formed on the first electric telescopic rod, and the action end of the first electric telescopic rod is slidably connected to the connecting plate; a feed port is rotatably mounted on the rotating rod; the traction assembly also includes a transverse movement structure for blocking the feed port.

5. The anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder according to claim 4, characterized in that: The transverse movement structure includes a guide part fixedly mounted on the feed port, a sealing plate is sealingly and slidably mounted in the guide part, a hinged rod is connected to the sealing plate, one end of the hinged rod away from the sealing plate is rotatably connected to a lifting plate slidably mounted on the connecting plate, and the lifting plate is connected to the action end of the first electric telescopic rod via a connecting frame.

6. The anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder according to claim 1, characterized in that: The scraping structure includes a second electric telescopic rod fixedly mounted on the box body, the action end of the second electric telescopic rod is connected to a connecting plate that passes through the box body, a scraper is provided on the connecting plate, multiple groups of lifting plates are slidably connected to the scraper, and the lifting plates are connected to a cylindrical spring provided in the scraper; The annular inclined guide surface provided on the side of the upper grinding disc can guide the lifting plate and the scraper to enter between the upper grinding disc and the lower grinding disc.

7. The anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder according to claim 6, characterized in that: The scraper is arranged in an inclined manner along the distribution direction of the plurality of lifting plates and the radial direction of the upper grinding disc.

8. The anti-adhesion multi-stage screening and grinding device for preparing gel jelly powder according to claim 4, characterized in that: The box body is provided with a filter screen and a collecting bucket, and the output end of the filter screen is connected to a screw conveying device arranged outside the box body, and the screw conveying device is connected to the feed port.

9. A method for screening and grinding gel jelly powder blocks, characterized in that: The anti-adhesion multi-stage screening and grinding device for preparing the gel jelly powder according to any one of claims 1 to 8 further comprises the following steps: Step 1: Start the device and the external conveying device, the external conveying device conveys the gel jelly powder block into the rotating rod, and makes the gel jelly powder block enter the grinding gap; Step 2: The upper grinding disc and the lower grinding disc rotate relative to each other to grind the gel jelly powder block; Step 3: The ground gel jelly powder enters the filter screen for screening. The gel jelly powder that meets the production standards enters the collection bucket, and the gel jelly powder that does not meet the production standards enters the spiral conveying device and is conveyed to the rotating rod again; Step 4: After the above steps 1 to 4 are performed for a predetermined time, the traction assembly drives the upper grinding disc to move upward, and the upper grinding disc and the lower grinding disc rotate in the same direction. At this time, the scraping structure operates to scrape off the gel jelly powder adhering to the upper grinding disc and the lower grinding disc and push it to the middle of the two, so that the gel jelly powder in this part can be ground again when continuing to grind.

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