Spina date seed screening and grinding all-in-one machine

Abstract

The invention relates to the technical field of screening and grinding equipment, in particular to a spina date seed screening and grinding all-in-one machine. A spina date seed screening and grinding all-in-one machine comprises a vertically-arranged rack and further comprises a grinding assembly and a screening assembly. The grinding assembly comprises a machine base, a driving shaft, a grinding disc and an adjusting part, the machine base is fixedly arranged above the rack, the driving shaft is transversely arranged in the machine base through a bearing seat, the grinding disc is arranged at one end of the machine base and used for conducting grinding and shell breaking operation on wild jujube kernels, and the adjusting part is arranged on the upper portion of the driving shaft and used for adjusting the grinding distance of the grinding disc; the screening assembly comprises a frame, a screen, a driven shaft and a cam, the driven shaft is arranged on one side of the rack and driven by the driving shaft to rotate, the frame is arranged below the rack and can horizontally reciprocate, the cam is arranged between the driven shaft and the frame to drive the frame to move, and the screen is arranged in the frame and used for screening spina date seeds and date shells; a motor used for sequentially driving the driving shaft and the driven shaft to rotate is further arranged on the upper portion of the rack.

Description

Technical Field

[0001] The present application relates to the technical field of screening and grinding equipment, and particularly relates to a jujube seed screening and grinding integrated machine, which is used for shelling jujube kernels to obtain kernels and efficiently separating the broken jujube shells from the jujube kernels to obtain clean jujube seeds. Background Art

[0002] As an important raw material with both medicinal and edible uses, during the processing of jujube seeds, it is necessary to shell the jujube kernels to obtain kernels and efficiently separate the jujube kernels from the jujube shells to ensure the purity of the finished product and production efficiency. Traditional processing equipment generally adopts a split design, that is, shelling, grinding and screening are completed step by step by independent equipment. However, such equipment has the following technical defects in actual application: 1. Poor process continuity and low efficiency: The split equipment needs to transfer materials multiple times, resulting in the interruption of the processing flow, frequent manual intervention, and limited overall efficiency, making it difficult to meet the needs of large-scale production; 2. Insufficient separation accuracy: Most existing screening devices use horizontal vibrating screens, with a single material movement trajectory, easy mixing of jujube kernels and jujube shells, and a high impurity content in the finished product, affecting the quality; 3. Low space utilization rate: The grinder and the screening machine are arranged separately, occupying a large area, and it is difficult to adapt to site restrictions especially in small-scale production scenarios; 4. Insufficient grinding adaptability: Traditional grinding components lack a convenient adjustment mechanism and are difficult to quickly adjust the grinding gap according to the particle size difference of jujube kernels, resulting in incomplete shelling or excessive pulverization; 5. High energy consumption cost: The split equipment needs to be equipped with multiple motors to drive respectively, with the energy consumption superimposed, and the economy is poor.

[0003] In view of the above problems, there is an urgent need for an integrated and compact processing equipment to realize the integrated continuous operation of jujube seed shelling and screening, while improving the separation accuracy, adjustment flexibility and energy utilization efficiency. Summary of the Invention

[0004] The problem to be solved by the present application is that the existing jujube seed processing equipment has problems of poor process continuity, insufficient separation accuracy, low space utilization rate, insufficient grinding adaptability and high energy consumption cost in grinding and screening.

[0005] To solve the above technical problems, the present application provides a Chinese wild jujube seed screening and grinding integrated machine, which includes a vertically arranged frame, and also includes a grinding component and a screening component; the grinding component uses a horizontal arrangement and a grinding method with the feeding side at the top and discharging side at the bottom to perform the operation of cracking the shell of Chinese wild jujube seeds to obtain the kernels, and the screening component uses an inclined arrangement and a screening method with horizontal vibration and longitudinal feeding to separate the Chinese wild jujube kernels and the jujube shells; the grinding component includes a machine base, a driving shaft, a grinding disc and an adjusting part. The machine base is fixedly arranged above the frame. The driving shaft is horizontally arranged inside the machine base through a bearing seat. The grinding disc is arranged at one end of the machine base and is used for grinding and cracking the Chinese wild jujube seeds. The adjusting part is placed on the upper part of the driving shaft and is used to adjust the grinding distance of the grinding disc; the screening component includes a frame, a screen, a driven shaft and a cam. The driven shaft is arranged on one side of the frame and is driven by the driving shaft to rotate. The frame is arranged below the frame and can move horizontally back and forth. The cam is arranged between the driven shaft and the frame to drive the frame to move. The screen is arranged inside the frame and is used for screening the Chinese wild jujube kernels and the jujube shells; an electric motor for sequentially driving the driving shaft and the driven shaft to rotate is also arranged on the upper part of the frame.

[0006] Since the screening and grinding integrated machine of the present application is designed with a grinding component and a screening component, it can not only perform the operation of cracking the shell of Chinese wild jujube seeds with adjustable grinding distance through the grinding component, but also perform the operation of separating the kernels and shells of the cracked Chinese wild jujube seeds with horizontal vibration and longitudinal feeding through the screening component, solving the problems of poor process continuity, insufficient separation accuracy, low space utilization rate, insufficient grinding adaptability and high energy consumption cost in the grinding and screening of the existing Chinese wild jujube seed processing equipment.

[0007] The effects of the technical solution of the present invention compared with the prior art: 1. Improve processing efficiency: By integrating the grinding component and the screening component into one, the continuous operation of cracking the shell of Chinese wild jujube seeds to obtain the kernels and separating the kernels and shells is realized, avoiding the cumbersome process of multiple material transfers required by traditional split equipment, and significantly improving the processing efficiency; 2. Improve separation effect: The screening component uses an inclined screen, combined with the screening method of horizontal vibration and longitudinal feeding, to enhance the controllability of the movement trajectory of the material on the screen, thereby improving the separation accuracy and efficiency of the Chinese wild jujube kernels and the jujube shells and reducing the impurities in the finished product; 3. Reduce floor area: By integrating the grinding and screening functions through a vertically arranged frame, optimizing the space layout, making the overall structure compact and reducing the space occupied by the equipment; 4. Conveniently adjust the grinding distance: An adjusting part is provided in the grinding component. By adjusting the grinding distance of the grinding disc, it can adapt to the cracking requirements of Chinese wild jujube seeds with different particle sizes, improving the versatility and operation flexibility of the equipment; 5. Reduce production energy consumption: A single electric motor is used to drive the driving shaft and the driven shaft. Through the linkage design, the power transmission path is simplified, the energy consumption is reduced, and the energy utilization efficiency is improved. Description of the Drawings

[0008] Figure 1 Schematic diagram of the overall structure of the embodiment.

[0009] Figure 2 Schematic diagram of the front view structure of the embodiment.

[0010] Figure 3 Schematic diagram of the right side view structure of the embodiment.

[0011] Figure 4 Schematic diagram of the left side view structure of the embodiment.

[0012] Figure 5 Schematic diagram of the top view structure of the embodiment.

[0013] Figure 6 Schematic diagram of the grinding assembly structure of the embodiment.

[0014] Figure 7 Schematic diagram of the three-dimensional structure of the grinder of the embodiment.

[0015] Figure 8 Schematic diagram of the sectional structure of the grinder of the embodiment.

[0016] Figure 9 Schematic diagram of the disk sleeve and shaft sleeve structure of the embodiment.

[0017] Figure 10 For Figure 9 Schematic diagram of the structure at A in

[0018] Figure 11 For Figure 9 Schematic diagram of the structure at B in

[0019] Figure 12 Schematic diagram of the grinding disk structure of the embodiment.

[0020] Figure 13 Schematic diagram of the adjusting part structure of the embodiment.

[0021] Figure 14 Schematic diagram of the screening assembly structure of the embodiment.

[0022] Figure 15 Schematic diagram of the pull rod and frame structure of the embodiment.

[0023] In the figure: 1. Frame; 2. Grinding assembly; 21. Grinder; 22. Feed hopper; 23. Discharge hood; 24. Motor; 211. Machine base; 212. Driving shaft; 213. Large pulley; 214. Small pulley; 215. Auger; 216. Static disk; 217. Moving disk; 218. Bearing seat; 219. Disk seat; 231. Discharge port; 2111, material chamber; 2161, grinding chamber; 2162, tooth groove; 2171, disc sleeve; 2172, bolt; 2181, bushing; 3, screening assembly; 31, driven shaft; 32, cam; 33, pull rod; 34, frame; 35, screen; 36, rail frame; 37, roller; 38, rail plate; 4, adjusting part; 41, outer cylinder; 42, inner cylinder; 43, thrust bearing; 44, first spring; 45, second spring; 421, hand wheel. Detailed implementation manner

[0024] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0025] The present application relates to a jujube seed screening and grinding integrated machine, as Figures 1-15 shown. The integrated machine includes a frame 1 that plays a vertical supporting role. A grinding assembly 2 is arranged along the midline position of the upper part of the frame 1 in the length direction. A screening assembly 3 that is vertically arranged side by side with the grinding assembly 2 and is inclined is arranged below the frame 1.

[0026] The grinding assembly 2 includes a grinding machine 21, a feed hopper 22, a discharge hood 23, and a motor 24. The grinding machine 21 is arranged above the frame 1 and adopts a top-in and side-out feeding and grinding method. The top of the grinding machine 21 is connected with the feed hopper 22 through bolts 2172. The feed hopper 22 has a square hopper-shaped structure with a wider upper part and a narrower lower part, which is convenient for centralized feeding of jujube kernels. The discharge hood 23 is a cylindrical tube structure with one end closed, and a discharge port 231 extends downward from its lower end. Since dust will be generated during the grinding process, a dust removal port for connecting an external bag filter can also be opened at one end of the discharge hood 23 to discharge the ground material. A motor 24 that provides a power source is also arranged on the upper part of the frame 1, and power is transmitted between the motor 24 and the grinding machine 21 through a belt.

[0027] The grinder 21 specifically includes a machine base 211, a driving shaft 212, belt pulleys (a large belt pulley 213 and a small belt pulley 214), a screw conveyor 215, and grinding disks (a stationary disk 216 and a moving disk 217). The machine base 211 is fixedly arranged above the frame 1 through bolts 2172. A driving shaft 212 for power transmission is horizontally arranged inside the machine base 211. Bearing seats 218 for supporting the driving shaft 212 are arranged at intervals along the length direction of the upper part of the machine base 211. A bushing 2181 key-connected to the driving shaft 212 is sleeved inside the bearing seat 218. A keyway runs through the upper part of the inner wall along the axial direction of the bushing 2181. The outer part of the bushing 2181 is in interference fit with the inner ring of the bearing inside the bearing seat 218, and the outer ring of the bearing is in interference fit with the inner wall of the bearing seat 218.

[0028] The belt pulleys are divided into a large belt pulley 213 and a small belt pulley 214. A large belt pulley 213 key-connected to it is arranged between the bearing seats 218 on the upper part of the driving shaft 212. A belt driven by the motor 24 is sleeved on the upper part of the large belt pulley 213. A small belt pulley 214 key-connected to it is arranged at the upper end of the driving shaft 212. A material cavity 2111 with a top-in and side-out structure is formed directly below the feed hopper 22 on the upper part of the machine base 211. A screw conveyor 215 sleeved and key-connected to the driving shaft 212 is arranged inside the material cavity 2111. The screw conveyor 215 is used to send the wild jujube pits at the top along the axial direction of the driving shaft 212.

[0029] A disk base 219 that opens outward is arranged at one end of the machine base 211. Grinding disks for shelling wild jujube pits are arranged inside the disk base 219. The grinding disks are divided into a moving disk 217 and a stationary disk 216. The stationary disk 216 is sleeved inside the disk base 219 and fixedly connected to it through bolts 2172. The moving disk 217 is sleeved on the upper part of the driving shaft 212 and fixedly connected to it through nuts. A grinding cavity 2161 for crushing wild jujube pits is left between the moving disk 217 and the stationary disk 216. To improve the grinding efficiency, tooth grooves 2162 for enhancing the crushing ability are formed on the outer wall of the moving disk 217 and the inner wall of the stationary disk 216.

[0030] To prevent the moving disk 217 from slipping when rotating with the driving shaft 212, a disk sleeve 2171 key-connected is sleeved on the upper part of the driving shaft 212. Bolts 2172 perpendicular to the surface are arranged on the upper part of the disk sleeve 2171 and penetrate the bottom surface of the moving disk 217. By applying a circumferential rotation limiting effect on the moving disk 217 through the bolts 2172, the moving disk 217 can stably rotate circumferentially with the driving shaft 212. And nuts should not be added to the ends of the bolts 2172 to prevent the moving disk 217 from colliding and being damaged with the stationary disk 216 during rotation due to uneven force, or from suffering stress cracking when tightening the nuts.

[0031] In order to adjust the grinding distance between the static disk 216 and the moving disk 217 according to the particle size of the required material, an adjusting member 4 for the axial displacement of the driving shaft 212 is arranged on the upper part of the machine base 211. The adjusting member 4 includes a sleeve, a spring, and a thrust bearing 43. The sleeve is divided into an outer cylinder 41 and an inner cylinder 42 connected by threads. The outer cylinder 41 is arranged outside the bearing seat 218 on the side close to the small pulley 214 and is connected to the bearing seat 218 by bolts 2172. The inner cylinder 42 is sleeved on the outside of the driving shaft 212, and one end is threadedly connected to the outer cylinder 41. A thrust bearing 43 is sleeved between the inner cylinder 42 and the driving shaft 212.

[0032] The spring is divided into a first spring 44 and a second spring 45, both of which are sleeved on the outside of the driving shaft 212. The two ends of the first spring 44 are respectively abutted against the thrust bearing 43 and the small pulley 214, and the two ends of the second spring 45 are respectively abutted against the large pulley 213 and the bushing 2181 inside the bearing seat 218, so that the spring can rotate freely along with the driving shaft 212.

[0033] To facilitate driving the inner cylinder 42 to rotate, a handwheel 421 fixedly connected thereto is arranged outside the inner cylinder 42. By driving the inner cylinder 42 to screw in and out around the outer cylinder 41 through the handwheel 421, the distance between the thrust bearing 43 and the small pulley 214 can be changed, so that the first spring 44 is compressed or extended, thereby enabling the driving shaft 212 to perform an axial movement operation along the bushing 2181 key-connected thereto. Since the size of the grinding chamber 2161 is small, the axial adjustment range of the driving shaft 212 is small, and the influence on the belt drive of the large pulley 213 and the small pulley 214 can be ignored. The first spring 44 can also provide an instantaneous elastic compensation operation when a hard object jams between the moving disk 217 and the static disk 216, so that the distance between the moving disk 217 and the static disk 216 instantaneously expands due to abutting against the hard object, and the hard object is discharged, avoiding damage to the tooth grooves 2162 on the surfaces of the moving disk 217 and the static disk 216. The second spring 45 is mainly used to adjust the grinding pressure of the moving disk 217. By changing the connection position of the large pulley 213 on the upper part of the driving shaft 212, the distance between the large pulley 213 and the bearing seat 2181 can be changed, and the pre-tightening degree of the second spring 45 can be changed, thereby changing the pressure generated during grinding between the moving disk 217 and the static disk 216.

[0034] The screening assembly 3 includes a driven shaft 31, a cam 32, a pull rod 33, a frame 34, a screen 35, a rail frame 36, a roller 37, and a rail plate 38. The driven shaft 31 is arranged on the upper part of the frame 1 on the side close to the motor 24 through a bearing seat 218. One end of the driven shaft 31 is driven by a belt to be in transmission with the small pulley 214, and a cam 32 that rotates with it is arranged at the other end of the driven shaft 31.

[0035] The frame 34 is arranged below the base 211 at the upper part of the frame 1. Rollers 37 that can travel along the surface of the frame 1 are arranged around the top of the frame 34. One end of the cam 32 is provided with a pull rod 33 hinged to the frame 34. Inside the frame 34, a screen 35 connected to it by bolts 2172 is arranged. One side of the screen 35 is an open structure to discharge intact wild jujube seeds. A mesh plate with holes is arranged at the bottom of the screen 35. To improve the screening speed of the screen 35, the frame 34 is arranged in an inclined state.

[0036] At one end of the upper part of the frame 1, a rail frame 36 higher than its top surface for supporting one set of rollers 37 is arranged. At the other end of the upper part of the frame 1, a rail plate 38 lower than the top surface of the rail frame 36 for supporting the other set of rollers 37 is arranged, so that the driven shaft 31 can drive the pull rod 33 to pull the frame 34 to reciprocate along the width direction of the frame 1 with the help of the cam 32 under the drive of the small pulley 214, and the frame 34 reciprocates along the rail frame 36 and the rail plate 38 with a height difference by means of the rollers 37 at its top.

[0037] After the wild jujube seeds and broken jujube shells ground by the grinder 21 fall on the surface of the screen 35, under the vibration of reciprocating movement along with the screen 35, the separation operation of the wild jujube seeds and jujube shells above the screen 35 is realized by the screen 35. Since the particle size of the broken jujube shells is smaller than that of the wild jujube seeds, they will fall along the holes of the screen 35 during the vibration, while the intact wild jujube seeds will continuously move along the surface of the screen 35 to the opening position of the screen 35. By pulling it to reciprocate on the side of the screen 35, the wild jujube seeds and jujube shells have a longer movement track on the surface of the screen 35, fully extending the separation time and making the separation of the wild jujube seeds and jujube shells more thorough.

[0038] The wild jujube seed screening and grinding integrated machine of this embodiment continuously grinds and cracks the wild jujube cores through the grinding assembly 2, and the grinding distance can be adjusted according to requirements; the screening assembly 3 realizes the efficient separation of the broken jujube shells and jujube kernels through inclined arrangement and reciprocating movement, obtaining clean jujube seeds, and has the advantages of reasonable structure, convenient operation and good separation effect.

[0039] Usage method: First, check whether the connections of all components of the integrated machine are firm, including the belts between the motor 24 and the grinder 21, the belts between the driven shaft 31 and the small pulley 214, etc., to ensure normal transmission. According to the required particle size of the wild jujube seeds, adjust the grinding distance. By rotating the handwheel 421, drive the inner cylinder 42 to rotate in or out around the outer cylinder 41, change the distance between the thrust bearing 43 and the small pulley 214, so as to adjust the size of the grinding cavity 2161 between the moving disk 217 and the static disk 216. After the adjustment is completed, you can try to manually rotate the driving shaft 212 to feel whether the grinding distance is appropriate. Put the wild jujube cores to be processed into the feed hopper 22 to ensure that the wild jujube cores can smoothly enter the material cavity 2111 of the grinder 21. To improve the adjustment accuracy, scale lines can be added above the handwheel 421.

[0040] Then, turn on the power supply to start the motor 24. The motor 24 drives the large pulley 213 to rotate through a belt. The large pulley 213 drives the driving shaft 212 to rotate, and then drives components such as the auger 215 and the moving disk 217 to rotate synchronously. At the same time, the small pulley 214 drives the driven shaft 31 to rotate through a belt, and the cam 32 on the driven shaft 31 rotates accordingly. During the rotation of the cam 32, the frame 34 is pulled by the pull rod 33 to move reciprocally along the width direction of the machine frame 1. The rollers 37 at the top of the frame 34 roll on the rail frame 36 and the rail plate 38, causing the vibrating screen 35 to vibrate.

[0041] After the wild jujube seeds enter the material cavity 2111 from the feed hopper 22, they move along the axial direction of the driving shaft 212 towards the grinding disk under the push of the auger 215. After entering the grinding cavity 2161, under the extrusion and grinding action of the moving disk 217 and the static disk 216, the outer shells of the wild jujube seeds are broken, and the internal kernels are released. The ground material is discharged from the discharge port 231 of the discharge cover 23 and falls onto the vibrating screen 35 of the vibrating screen 35. Under the reciprocating vibration of the vibrating screen 35, the smaller-sized jujube shells fall through the holes of the vibrating screen 35, while the intact wild jujube kernels move along the surface of the vibrating screen 35 to the opening position of the vibrating screen 35, thus realizing the separation of the kernels and the shells.

[0042] Place a collection container at the opening position of the vibrating screen 35 for collecting the separated wild jujube kernels. At the same time, place another container under the integrated machine for collecting the fallen jujube shells. Regularly check the materials in the collection container, and when the amount of wild jujube kernels or jujube shells reaches a certain level, replace the collection container in a timely manner.

[0043] When all the wild jujube seeds have been processed, first turn off the motor 24, cut off the power supply, and clean the residual materials inside the integrated machine, including the grinding cavity 2161 of the grinder 21, the vibrating screen 35 of the vibrating screen 35, etc., to prevent the influence of material residue on the next use. Check the wear condition of each component. If there are severely worn components, replace them in a timely manner. Regularly lubricate and maintain the integrated machine to ensure the normal operation of the equipment. This wild jujube kernel screening and grinding integrated machine can efficiently complete the grinding of wild jujube seeds and the separation of kernels and shells through reasonable structural design and correct usage methods, and has the advantages of simple operation and good separation effect.

[0044] Generally speaking, terms should be understood at least in part by their use in context. For example, at least in part according to the context, the term "one or more" used in the text can be used to describe any feature, structure, or property with a singular meaning, or can be used to describe a combination of features, structures, or properties with a plural meaning. Similarly, at least in part according to the context, terms such as "a" or "the" can also be understood as conveying singular usage or conveying plural usage.

[0045] It should be readily understood that the terms "on", "above", and "over" in this disclosure should be construed in the broadest manner such that "on" not only means "directly on something", but also includes the meaning of "on something" with intervening features or layers therebetween, and "above" or "over" not only includes the meaning of "above" or "over something", but may also include the meaning of "above" or "over something" with no intervening features or layers therebetween (i.e., directly on something).

[0046] In addition, for ease of explanation, spatial relative terms may be used in the text, such as "below", "beneath", "under", "above", "over", etc., to describe the relationship of one element or feature to another as shown in the figures. Spatial relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation shown in the figures. The device may have other orientations (rotated 90 degrees or at other orientations), and the spatial relative descriptors used in the text may be interpreted accordingly as well.

[0047] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A jujube kernel screening and grinding machine, comprising a vertically arranged frame (1), characterized in that: It also includes a grinding component (2) and a screening component (3); The grinding component (2) adopts a horizontal arrangement and a top-in and side-out grinding method to break the shell and extract the kernel of the sour jujube kernel, and the screening component (3) adopts an inclined arrangement and a horizontal vibration and vertical feeding screening method to separate the sour jujube kernel and the jujube shell; The grinding assembly (2) comprises a machine base (211), a driving shaft (212), a grinding disc and an adjusting member (4), wherein the machine base (211) is fixedly arranged above the machine frame (1), the driving shaft (212) is horizontally arranged inside the machine base (211) via a bearing seat (218), the grinding disc is arranged at one end of the machine base (211) and is used for grinding and shelling the sour jujube kernels, and the adjusting member (4) is arranged on the upper part of the driving shaft (212) and is used for adjusting the grinding spacing of the grinding disc; A screening assembly (3) comprises a frame (34), a screen (35), a driven shaft (31) and a cam (32), wherein the driven shaft (31) is arranged at one side of the frame (1) and is driven by a driving shaft (212) to rotate, the frame (34) is arranged below the frame (1) and can reciprocate horizontally, the cam (32) is arranged between the driven shaft (31) and the frame (34) to drive the frame (34) to move, and the screen (35) is arranged inside the frame (34) for screening wild jujube kernels and jujube shells; A motor (24) for sequentially driving the driving shaft (212) and the driven shaft (31) to rotate is also arranged on the upper part of the frame (1).

2. The integrated machine for screening and grinding spinach kernels according to claim 1, characterized in that: The grinding assembly (2) also includes a pulley, an auger (215) and a disc seat (219). The upper part of the driving shaft (212) is respectively provided with a pulley and an auger (215) connected with a key thereto. The disc seat (219) is arranged at one end of the upper part of the driving shaft (212) and has a grinding disc.

3. The integrated machine for screening and grinding wild jujube seeds according to claim 1, characterized in that: The bearing seat (218) is internally sleeved with a shaft sleeve (2181) key-connected to the driving shaft (212), and a keyway is arranged through the shaft sleeve (2181) in the axial direction, so that the driving shaft (212) and the bearing seat (218) can generate axial relative displacement.

4. The integrated machine for screening and grinding spinach kernels according to claim 2, characterized in that: The grinding disc comprises a moving disc (217) and a static disc (216) which are both moving and static. A sleeve (2171) of the static disc (216) is arranged and fixedly disposed inside a disc seat (219). A sleeve (2171) of the moving disc (217) is arranged and fixedly disposed at one end of a driving shaft (212). A grinding cavity (2161) for crushing jujube shells is formed between the moving disc (217) and the static disc (216).

5. The integrated machine for screening and grinding wild jujube seeds according to claim 4, characterized in that: The outer wall of the moving plate (217) and the inner wall of the stationary plate (216) are both formed with tooth grooves (2162) for improving the crushing capacity.

6. The integrated machine for screening and grinding wild jujube seeds according to claim 4, characterized in that: The upper part of the driving shaft (212) is sleeved with a disc sleeve (2171) connected with a key, and the upper part of the disc sleeve (2171) is vertically arranged along its surface with bolts (2172) penetrating the bottom surface of the moving disc (217) to make the moving disc (217) and the driving shaft (212) rotate synchronously.

7. The integrated machine for screening and grinding wild jujube seeds according to claim 2, characterized in that: The pulley is divided into a large pulley (213) and a small pulley (214). The large pulley (213) is used to transmit power from the motor (24) to the driving shaft (212), and the small pulley (214) is used to transmit power from the driving shaft (212) to the driven shaft (31).

8. The integrated machine for screening and grinding wild jujube seeds according to claim 7, characterized in that: The adjusting member (4) comprises an outer cylinder (41) and an inner cylinder (42) which are threadedly connected. The inner cylinder (42) can be screwed in and out relative to the outer cylinder (41). A thrust bearing (43) is arranged between the inner cylinder (42) and the driving shaft (212). A first spring (44) is arranged between the thrust bearing (43) and the small pulley (214). The distance between the thrust bearing (43) and the small pulley (214) is adjusted by rotating the inner cylinder (42), thereby realizing the axial movement of the driving shaft (212) and adjusting the grinding distance between the grinding discs.

9. The integrated machine for screening and grinding wild jujube seeds according to claim 1, characterized in that: The screening assembly (3) further comprises a roller (37), a rail frame (36), and a rail plate (38). The roller (37) is arranged around the top of the frame (34). The rail frame (36) and the rail plate (38) are respectively arranged on the top of the frame (1) for the roller (37) to travel. There is a height difference between the rail frame (36) and the rail plate (38) so that the frame (34) is inclined.

10. The integrated machine for screening and grinding wild jujube seeds according to claim 1, characterized in that: The grinding assembly (2) further comprises a feed hopper (22) and a discharge cover (23), wherein the feed hopper (22) is vertically arranged on the top of the grinding machine (21), and the discharge cover (23) is horizontally placed at one end of the grinding machine (21) and has a discharge port (231) extending downward.

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