Food processing liquid nitrogen grinding device

Abstract

The utility model discloses a food processing liquid nitrogen grinding device, include: grinding disc, discharge gate, transmission shaft, multiple pivot, hopper mounting bracket, scraper mounting bracket, a pair of storage hopper, arc scraper and multiple anti -sticky component. The bottom of grinding disc is fixed with multiple supporting legs. The discharge gate is excavated in the center of grinding disc, and its bottom is provided with the discharge cavity. Transmission shaft is vertical in the bottom wall of discharge cavity, and is located in the center of grinding disc. Multiple pivot hopper mounting bracket and scraper mounting bracket, close transmission shaft one end all install on transmission shaft, and multiple transmission shafts are mutually arranged with transmission shaft as the center equidistant, and multiple pivot all rotate and set up grinding roller, and grinding roller slides in grinding disc. A pair of storage hopper all install on hopper mounting bracket, and its bottom all is provided with the discharge cavity. The utility model discloses through coherent structure design, can carry out the continuity grinding operation, and effectively promoted the efficiency of food grinding.

Description

Technical Field

[0001] This utility model belongs to the field of grinding equipment technology, specifically relating to a liquid nitrogen grinding device for food processing. Background Technology

[0002] When grinding foods with mucous membranes, the mucous membranes may become entangled during the grinding process. Therefore, the fish or meat must first be removed and frozen with liquid nitrogen before it can be put into the grinder for grinding.

[0003] Chinese patent CN202221101294.3 discloses a liquid nitrogen grinding bowl, including a bowl body and a grinding rod. The bowl body has a grinding groove in the middle and also includes a splash-proof soft cover. A positioning ring is inlaid around the grinding groove on the upper surface of the bowl body. The splash-proof soft cover is composed of a fixing ring and a flexible protective cover. The lower surface of the fixing ring has an annular groove that cooperates with the positioning ring. One side wall of the fixing ring has multiple vent holes that penetrate the inside and outside. The flexible protective cover is a conical cover. The large end of the flexible protective cover is fixed to the fixing ring, and the small end of the flexible protective cover is fixed to the middle of the grinding rod.

[0004] Although the aforementioned technology prevents splashing during grinding by setting an anti-splash soft cover, the device still needs to open the soft cover and take out the raw material after each grinding before subsequent grinding can be carried out. Therefore, it cannot achieve continuous grinding operations, resulting in low grinding efficiency.

[0005] Therefore, in order to address the above-mentioned technical problems, it is necessary to provide a liquid nitrogen grinding device for food processing.

[0006] The information disclosed in this background section is intended only to enhance the understanding of the overall background of this utility model and should not be construed as an admission or in any way implying that the information constitutes prior art known to those skilled in the art. Utility Model Content

[0007] The purpose of this invention is to provide a liquid nitrogen grinding device for food processing, which can solve the problem that existing liquid nitrogen grinding devices cannot perform continuous grinding operations.

[0008] To achieve the above objectives, the technical solution provided by a specific embodiment of this utility model is as follows:

[0009] A liquid nitrogen grinding device for food processing includes: a grinding disc, a discharge port, a drive shaft, multiple rotating shafts, a hopper mounting frame, a scraper mounting frame, a pair of storage hoppers, an arc-shaped scraper, and multiple anti-stick components.

[0010] The grinding disc has multiple support legs fixed to its bottom. The discharge port is carved at the center of the grinding disc, and its bottom has a discharge cavity. The drive shaft rotates vertically on the bottom wall of the discharge cavity and is located at the center of the grinding disc. Multiple rotating shaft hopper mounting brackets and scraper mounting brackets are mounted on the drive shaft at their ends closest to it. The multiple drive shafts are equally spaced about the drive shaft, and grinding rollers are rotatably mounted on each of the multiple rotating shafts, sliding within the grinding disc. A pair of storage hoppers are mounted on hopper mounting brackets, and each has a discharge cavity at its bottom. Discharge assemblies are installed in each pair of discharge cavities, and each has a discharge opening at its bottom. The arc-shaped scraper is mounted on the scraper mounting bracket at the end furthest from the drive shaft, and its two ends are respectively attached to the inner and outer ring lines of the inner bottom wall of the grinding disc. Multiple anti-stick components are respectively installed between every two grinding rollers.

[0011] In one embodiment of this utility model, the discharge chamber is located on the bottom wall of the discharge port and is angled downwards to one side. This allows the ground raw material, when fed into the discharge chamber through the discharge port, to slide along the angled downwards side wall of the discharge chamber towards its outlet.

[0012] In one embodiment of this utility model, the grinding roller is tapered, and its outer wall radius gradually decreases towards the drive shaft. The two ends of the outer wall of the grinding roller are respectively attached to the inner and outer ring lines of the inner bottom wall of the grinding disc. The ratio of the minimum radius to the maximum radius of the outer wall of the grinding roller is the same as the ratio of the inner and outer ring radii of the inner bottom wall of the grinding disc. This ensures that when the grinding roller rolls within the grinding disc, its minimum radius end completes one revolution along the inner ring line of the inner bottom wall of the grinding disc, while its maximum radius end also completes one revolution along the outer ring line of the inner bottom wall of the grinding disc.

[0013] In one embodiment of this utility model, mounting sleeves are fixed to one end of each of the plurality of rotating shafts, hopper mounting brackets, and scraper mounting brackets near the drive shaft, and the plurality of mounting sleeves are snapped onto the drive shaft. The plurality of rotating shafts, hopper mounting brackets, and scraper mounting brackets are snapped onto the drive shaft by the mounting sleeves.

[0014] In one embodiment of this invention, a limiting ring is fixed to the bottom of a plurality of mounting sleeves on the drive shaft. The limiting ring serves to support the mounting sleeves above.

[0015] In one embodiment of this utility model, multiple limiting strips are fixed at equal intervals on the inner sidewalls of the multiple mounting sleeves. Multiple limiting grooves, adapted to the limiting strips, are equally spaced on the outer wall of the top of the limiting ring on the drive shaft. The multiple mounting sleeves are secured in the multiple limiting grooves by the multiple limiting strips, thereby securing the mounting sleeves on the drive shaft and causing the drive shaft to drive the mounting sleeves to rotate.

[0016] In one embodiment of this utility model, a threaded head is fixed to the top of the drive shaft, and a nut is threaded onto the threaded head, with the radius of the threaded head being smaller than the radius of the drive shaft. Multiple mounting sleeves are locked onto the drive shaft by tightening the nut onto the threaded head, and the smaller radius of the threaded head prevents the mounting sleeves from obstructing downward installation onto the drive shaft from the top.

[0017] In one embodiment of this utility model, the feeding assembly includes a control shaft and a control wheel. The control shaft rotates within a pair of feeding chambers, and multiple partitions are evenly spaced and fixed on the outer walls of both ends of the control shaft within the pair of feeding chambers. The control wheel is fixed to the control shaft and positioned between the pair of feeding chambers, with its outer wall sliding against the inner bottom wall of the grinding disc. When the hopper mounting frame drives the pair of storage hoppers to rotate, the control wheel rolls on the inner bottom wall of the grinding disc, thereby causing the control wheel to drive the control shaft to rotate. The control shaft then drives the partitions to rotate, and the partitions push the raw materials in the storage hoppers to the feeding port, where they fall onto the inner bottom wall of the grinding disc.

[0018] In one embodiment of this utility model, the outer wall of the control wheel is provided with anti-slip texture to increase the friction between the outer wall of the control wheel and the inner bottom wall of the grinding disc, and to prevent slippage between the friction between the outer wall of the control wheel and the inner bottom wall of the grinding disc, thereby ensuring the transmission effect of the control wheel.

[0019] In one embodiment of this utility model, the anti-sticking component includes: a cross arm and multiple arc-shaped plowshares. One end of the cross arm near the drive shaft is fixed to a mounting sleeve at one end of the scraper mounting bracket. Multiple arc-shaped plowshares are fixed at equal intervals at the bottom of the cross arm, with the arc-shaped plowshares on each adjacent pair of cross arms arranged in opposite directions. The cross arm drives the multiple arc-shaped plowshares to rotate, causing them to scrape the material ground by the front grinding roller from the bottom wall of the grinding disc. The material is then flipped over by the inner sidewall of the arc-shaped plowshares, allowing the rear grinding roller to grind the material more effectively again. Furthermore, the arrangement of the arc-shaped plowshares on each adjacent pair of cross arms in opposite directions prevents all the arc-shaped plowshares at the bottom of the cross arms from pushing the material in the grinding disc to one side, causing material to accumulate on one side.

[0020] Compared with the prior art, the liquid nitrogen grinding device for food processing of this utility model, through coherent structural design, can perform continuous grinding operations, effectively improving the efficiency of food grinding. Attached Figure Description

[0021] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0022] Figure 1 This is a perspective view of a liquid nitrogen grinding device for food processing according to an embodiment of the present invention;

[0023] Figure 2 This is a top view of a liquid nitrogen grinding device for food processing according to an embodiment of the present invention;

[0024] Figure 3 This is a schematic diagram of the structure of the grinding disc in one embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the grinding roller in one embodiment of the present invention;

[0026] Figure 5 This is a schematic diagram of the structure of the hopper mounting frame and the storage hopper in one embodiment of the present invention;

[0027] Figure 6 This is a schematic diagram of the arc-shaped scraper and anti-stick component in one embodiment of the present invention.

[0028] Explanation of key figure labels:

[0029] 1-Grinding disc, 101-Discharge port, 102-Discharge chamber, 103-Drive shaft, 104-Limit ring, 105-Limit groove, 106-Threaded head, 107-Support leg, 108-Nut, 109-Mounting sleeve, 110-Limit strip, 201-Rotating shaft, 202-Grinding roller, 301-Hopper mounting frame, 302-Storage hopper, 303-Discharge chamber, 304-Discharge port, 305-Control shaft, 306-Partition plate, 307-Control wheel, 401-Scraper mounting frame, 402-Arc-shaped scraper, 403-Anti-stick component, 404-Horizontal arm, 405-Arc-shaped plowshare. Detailed Implementation

[0030] To enable those skilled in the art to better understand the technical solutions in this disclosure, the technical solutions in the embodiments of this disclosure will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this disclosure, and not all embodiments. Based on the embodiments in this disclosure, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this disclosure.

[0031] like Figures 1 to 6 As shown, a liquid nitrogen grinding device for food processing in one embodiment of the present invention includes: a grinding disc 1, a discharge port 101, a transmission shaft 103, multiple rotating shafts 201, a hopper mounting frame 301, a scraper mounting frame 401, a pair of storage hoppers 302, an arc-shaped scraper 402, and multiple anti-stick components 403.

[0032] like Figures 1 to 6 As shown, the bottom of the grinding disc 1 is fixed with multiple support legs 107. The discharge port 101 is carved at the center of the grinding disc 1, and its bottom is provided with a discharge cavity 102. The drive shaft 103 rotates vertically on the bottom wall of the discharge cavity 102 and is located at the center of the grinding disc 1. Multiple rotating shafts 201, hopper mounting brackets 301, and scraper mounting brackets 401 are all mounted on the drive shaft 103 at their ends near the drive shaft 103. The multiple drive shafts 103 are equally spaced about the drive shaft 103. Grinding rollers 202 are rotatably mounted on each of the multiple rotating shafts 201, and the grinding rollers 202 slide within the grinding disc 1. A pair of storage hoppers 302 are each mounted on the hopper mounting bracket 301, and each has a discharge cavity 303 at its bottom. A discharge assembly is installed in each pair of discharge hoppers 303, and a discharge port 304 is carved at the bottom of each of them. An arc-shaped scraper 402 is installed at the end of the scraper mounting bracket 401 away from the drive shaft 103, and both ends of the arc-shaped scraper 402 are respectively attached to the inner and outer ring lines of the inner bottom wall of the grinding disc 1. Multiple anti-stick components 403 are respectively installed between every two grinding rollers 202.

[0033] When using this device, the bottom end of the drive shaft 103 needs to be connected to a drive unit to drive the drive shaft 103 to rotate. The motor model is DM860H. Next, from the front to the rear of the drive shaft 103's rotation direction, the following are arranged in sequence: a hopper mounting frame 301, multiple rotating shafts 201, a scraper mounting frame 401, and multiple anti-stick components 403, each positioned between every two grinding rollers 202. During grinding, food frozen with liquid nitrogen is added to the storage hopper 302. Then, the drive shaft 103 drives the hopper mounting frame 301, multiple rotating shafts 201, scraper mounting frame 401, and multiple anti-stick components 403 to rotate together. When the hopper mounting frame 301 drives the pair of storage hoppers 302 to rotate, the material in the hopper mounting frame 301 is conveyed to the discharge port 304 through the discharge components in the pair of discharge chambers 303 and falls into the grinding disc 1.

[0034] Subsequently, multiple grinding rollers 202 located at the rear roll over the material to grind it. Simultaneously, after each grinding roller 202 has passed over the material, the anti-stick component 403 scrapes the material off the inner bottom wall of the grinding disc 1 and flips the material over, thus preventing it from sticking to one spot on the inner bottom wall of the grinding disc 1. Once all the grinding rollers 202 have finished grinding the material, the scraper mounting bracket 401 drives the arc-shaped scraper 402 to scrape off the material from the inner bottom wall of the grinding disc 1. The material moves along the inner arc of the arc-shaped scraper 402 towards the discharge port 101, finally falling through the discharge port 101 into the discharge chamber 102 below. A receiving frame for holding the material is then placed at the outlet of the discharge chamber 102.

[0035] like Figures 1 to 6 As shown, the discharge chamber 102 is located at the bottom of the discharge port 101 and is inclined downwards to one side. This allows the ground raw material to slide along the inclined downwards side wall of the discharge chamber 102 as it enters the discharge chamber 102 through the discharge port 101, towards the outlet of the discharge chamber 102. The grinding roller 202 is conical, and its outer radius gradually decreases towards the drive shaft 103. Both ends of the outer wall of the grinding roller 202 are respectively attached to the inner and outer ring lines of the inner bottom wall of the grinding disc 1. The ratio of the minimum radius to the maximum radius of the outer wall of the grinding roller 202 is the same as the ratio of the inner and outer ring radii of the inner bottom wall of the grinding disc 1. This ensures that when the grinding roller 202 rolls within the grinding disc 1, its minimum radius end completes one revolution along the inner ring line of the inner bottom wall of the grinding disc 1, while its maximum radius end also completes one revolution along the outer ring line of the inner bottom wall of the grinding disc 1.

[0036] like Figures 1 to 6 As shown, multiple rotating shafts 201, hopper mounting brackets 301, and scraper mounting brackets 401 are all fixed with mounting sleeves 109 at one end near the drive shaft 103, and the multiple mounting sleeves 109 are all snapped onto the drive shaft 103. The multiple rotating shafts 201, hopper mounting brackets 301, and scraper mounting brackets 401 are snapped onto the drive shaft 103 via the mounting sleeves 109. Limiting rings 104 are fixed to the bottom of the multiple mounting sleeves 109 on the drive shaft 103. The limiting rings 104 provide support for the mounting sleeves 109 above.

[0037] like Figures 1 to 6 As shown, multiple limiting strips 110 are fixed at equal intervals on the inner sidewalls of multiple mounting sleeves 109. Multiple limiting grooves 105, which are adapted to the limiting strips 110, are equally spaced on the outer wall of the top of the limiting ring 104 on the drive shaft 103. The multiple mounting sleeves 109 are engaged in the multiple limiting grooves 105 by the multiple limiting strips 110, thereby securing the mounting sleeves 109 to the drive shaft 103 and causing the drive shaft 103 to drive the mounting sleeves 109 to rotate.

[0038] like Figures 1 to 6 As shown, a threaded head 106 is fixed to the top of the drive shaft 103, and a nut 108 is threaded onto the threaded head 106. The radius of the threaded head 106 is smaller than the radius of the drive shaft 103. By tightening the nut 108 onto the threaded head 106, multiple mounting sleeves 109 are locked onto the drive shaft 103. The smaller radius of the threaded head 106 prevents the threaded head 106 from obstructing the mounting sleeves 109 from being installed downwards onto the drive shaft 103.

[0039] like Figures 1 to 6 As shown, the feeding assembly includes a control shaft 305 and a control wheel 307. The control shaft 305 rotates within a pair of feeding chambers 303, and multiple partitions 306 are evenly spaced and fixed on the outer walls of both ends of the control shaft 305 within the pair of feeding chambers 303. The control wheel 307 is fixed to the control shaft 305 and is located between the pair of feeding chambers 303, with its outer wall sliding against the inner bottom wall of the grinding disc 1. When the hopper mounting frame 301 drives the pair of storage hoppers 302 to rotate, the control wheel 307 rolls on the inner bottom wall of the grinding disc 1, thereby causing the control shaft 305 to rotate. The control shaft 305 then drives the partitions 306 to rotate, and the partitions 306 push the raw material in the storage hoppers 302 to the feeding port 304, where it falls onto the inner bottom wall of the grinding disc 1.

[0040] like Figures 1 to 6 As shown, the outer wall of the control wheel 307 is provided with anti-slip texture to increase the friction between the outer wall of the control wheel 307 and the inner bottom wall of the grinding disc 1, and to prevent slippage between the outer wall of the control wheel 307 and the inner bottom wall of the grinding disc 1, thereby ensuring the transmission effect of the control wheel 307.

[0041] like Figures 1 to 6 As shown, the anti-sticking component 403 includes a cross arm 404 and multiple arc-shaped plowshares 405. One end of the cross arm 404 near the drive shaft 103 is fixed to a mounting sleeve 109 at one end of the scraper mounting bracket 401. Multiple arc-shaped plowshares 405 are fixed at equal intervals at the bottom of the cross arm 404, with each pair of adjacent cross arm 404 having arc-shaped plowshares 405 arranged in opposite directions. The cross arm 404 drives the multiple arc-shaped plowshares 405 to rotate, causing them to scrape the material ground by the front grinding roller 202 from the bottom wall of the grinding disc 1. The material is then flipped over by the inner sidewall of the arc-shaped plowshares 405, allowing the rear grinding roller 202 to grind the material more effectively again. Furthermore, the arrangement of the arc-shaped plowshares 405 in opposite directions at the bottom of each pair of adjacent cross arm 404 prevents all the arc-shaped plowshares 405 from pushing the material in the grinding disc 1 to one side, causing material to accumulate on one side.

[0042] Working principle: During grinding, food frozen by liquid nitrogen is added to the storage hopper 302. Then, the drive shaft 103 drives the hopper mounting frame 301, multiple rotating shafts 201, scraper mounting frame 401 and multiple anti-stick components 403 to rotate together. When the hopper mounting frame 301 drives a pair of storage hoppers 302 to rotate, the control wheel 307 rolls on the inner bottom wall of the grinding disc 1, thereby driving the control shaft 305 to rotate. The control shaft 305 drives the partition 306 to rotate. The partition 306 pushes the raw material in the storage hopper 302 to the discharge port 304 and drops it onto the inner bottom wall of the grinding disc 1.

[0043] Subsequently, multiple grinding rollers 202 located at the rear roll over the material to grind it. Simultaneously, after each grinding roller 202 has passed over the material, its rear cross arm 404 drives multiple arc-shaped plowshares 405 to rotate. These plowshares 405 scrape the material ground by the preceding grinding rollers off the inner bottom wall of the grinding disc 1, and tumble it over through the inner side wall of the arc-shaped plowshares 405, allowing the rear grinding rollers 202 to grind the material more effectively. Once all the grinding rollers 202 have finished grinding the material, the scraper mounting frame 401 drives the arc-shaped scraper 402 to scrape away the material from the inner bottom wall of the grinding disc 1. The material moves along the inner arc of the arc-shaped scraper 402 towards the discharge port 101, finally falling through the discharge port 101 into the discharge chamber 102 below. A receiving frame for holding the material is then placed at the outlet of the discharge chamber 102.

[0044] It will be apparent to those skilled in the art that this disclosure is not limited to the details of the exemplary embodiments described above, and that this disclosure can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of this disclosure is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within this disclosure. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0045] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A liquid nitrogen grinding device for food processing, characterized in that, include: A grinding disc, the bottom of which is fixed with multiple support legs; The discharge port is carved in the center of the grinding disc, and a discharge chamber is provided at its bottom; The drive shaft rotates vertically on the bottom wall of the discharge chamber and is located at the center of the grinding disc; Multiple rotating shafts, hopper mounting brackets, and scraper mounting brackets are all mounted on the drive shaft at one end near the drive shaft. The multiple drive shafts are equally spaced about the drive shaft as the center. Grinding rollers are rotatably mounted on the multiple rotating shafts and slide inside the grinding disc. A pair of storage hoppers are installed on a hopper mounting frame, and each of them has a discharge chamber at its bottom. A discharge assembly is installed in each of the discharge chambers, and a discharge port is cut out at the bottom of each of them. An arc-shaped scraper is installed at the end of the scraper mounting bracket away from the drive shaft, and the two ends of the arc-shaped scraper are respectively attached to the inner and outer ring lines of the inner bottom wall of the grinding disc; and Multiple anti-stick components are installed between each pair of grinding rollers.

2. The liquid nitrogen grinding device for food processing according to claim 1, characterized in that, The discharge chamber is located on the bottom wall of the discharge port, angled downwards to one side.

3. The liquid nitrogen grinding device for food processing according to claim 1, characterized in that, The grinding roller is tapered, and its outer radius gradually decreases towards the drive shaft.

4. The liquid nitrogen grinding device for food processing according to claim 1, characterized in that, Each of the aforementioned rotating shafts, hopper mounting brackets, and scraper mounting brackets has a mounting sleeve fixed at one end near the drive shaft, and the aforementioned mounting sleeves are snapped onto the drive shaft.

5. The liquid nitrogen grinding apparatus for food processing according to claim 4, characterized in that, Limiting rings are fixed to the bottom of multiple mounting sleeves on the drive shaft.

6. The liquid nitrogen grinding device for food processing according to claim 5, characterized in that, Multiple limiting strips are fixed at equal intervals on the inner sidewalls of the multiple mounting sleeves, and multiple limiting grooves adapted to the limiting strips are equally spaced on the outer wall of the top of the limiting ring on the drive shaft.

7. The liquid nitrogen grinding apparatus for food processing according to claim 6, characterized in that, The top of the drive shaft is fixed with a threaded head, and a nut is threaded onto the threaded head. The radius of the threaded head is smaller than the radius of the drive shaft.

8. The liquid nitrogen grinding device for food processing according to claim 1, characterized in that, The feeding assembly includes: The control shaft rotates within a pair of feeding chambers, and multiple partitions are evenly spaced and fixed on the outer walls of its two ends within the pair of feeding chambers; and A control wheel is fixed on a control shaft and located between a pair of feeding chambers. The outer wall of the control wheel slides on the inner bottom wall of the grinding disc.

9. A liquid nitrogen grinding apparatus for food processing according to claim 8, characterized in that, The outer wall of the control wheel is provided with anti-slip texture.

10. A liquid nitrogen grinding apparatus for food processing according to claim 4, characterized in that, The anti-stick component includes: The cross arm, with one end near the drive shaft, is fixed to the mounting sleeve at one end of the scraper mounting bracket; Multiple arc-shaped plowshares are fixed at equal intervals at the bottom of the crossarm, and the arc-shaped plowshares on each adjacent pair of crossarms are set in opposite directions.

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