Uninterrupted circular screening equipment for jujube powder

Abstract

The invention discloses uninterrupted circular screening equipment for jujube powder, and belongs to the technical field of food screening. The circular screening equipment comprises a material receiving disc, a protective barrel is arranged on the lower surface of the material receiving disc, a plurality of vibration screens are arranged on the material receiving disc, and the meshes of screen meshes of the vibration screens are sequentially decreased from top to bottom; a sieve plate is arranged in the powder wiping box, the upper surface of the sieve plate is slidably connected with a friction block, jujube powder cakes entering the powder wiping box are ground on the sieve plate through the friction block moving in a reciprocating mode, one end of the lower surface of the powder wiping box is connected with a connecting pipe, the tail end of the connecting pipe is connected with an auger, and the upper end of the auger is connected with a discharging pipe. And the discharging pipe extends into the vibration sieve on the uppermost layer. The sieve plate and the friction block are arranged in the powder wiping box, jujube powder cakes entering the powder wiping box are ground on the sieve plate through the friction block moving in a reciprocating mode, friction lines on the lower surface of the friction block and the design that the friction lines are attached to the arc-shaped sieve plate facilitate more sufficient grinding of the jujube powder cakes, and the utilization rate of jujube powder is increased.

Description

Technical Field

[0001] The invention belongs to the technical field of food screening, and in particular relates to a non-stop circulating screening device for jujube powder. Background Art

[0002] In the process of preparing flour food, the flour usually needs to be screened in the early stage to separate impurities in order to obtain finer flour to meet the needs of food preparation. Since the flour is directly poured into the powder screening equipment during screening, a small amount of flour will agglomerate on the surface of the screen, affecting the screening effect.

[0003] Chinese invention patent CN113426656A discloses a flour screening device, which uses a motor as a drive to drive the first gear to rotate, thereby driving the inner cylinder to rotate. Since the first gear and the gear ring are connected by a second gear, the outer cylinder is driven to rotate in the inner cavity of the limiting seat using a rotating ring, so that the inner cylinder and the outer cylinder rotate in opposite directions, making it easy for the flour in the inner cylinder to enter the inner cavity of the outer cylinder through the opening under the centrifugal force. The agglomerated flour is broken up in the gap between the outer cylinder and the inner cylinder, ensuring the screening effect.

[0004] However, jujube powder is different from flour. It contains a certain amount of sugar. When it is bagged, it will form lumps due to squeezing and precipitation of sugar. Traditional screening will set openings to remove the lumps, but this will cause certain waste. Summary of the Invention

[0005] The purpose of this section is to summarize some aspects of the embodiments of the present invention and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract and title of this application to avoid obscuring the purpose of this section, the abstract and the title of the invention, and such simplifications or omissions should not be used to limit the scope of the present invention.

[0006] In order to solve the problems raised in the above background technology, the present invention adopts the following technical solutions.

[0007] A non-stop cycle screening device for jujube powder comprises a receiving tray, a casing is provided on the lower surface of the receiving tray, a plurality of vibrating screens are provided on the receiving tray, and the mesh of the vibrating screens decreases from top to bottom, a rectangular through-hole is provided on the side of the vibrating screen, a slag tray is connected to the outer side of the rectangular through-hole, a circular hole is provided on the lower front end surface of the slag tray, and when the plurality of vibrating screens are assembled, the slag trays are on the same axis, a discharge pipe is connected to the lower surface of the circular hole of the slag tray on the bottommost vibrating screen, a powder rubbing box is connected to the end of the discharge pipe, the powder rubbing box is hidden in the casing, and the lower surface of the powder rubbing box is provided. One end is connected to a connecting pipe, the end of the connecting pipe is connected to an auger, the upper end of the auger is connected to a discharge pipe, and the discharge pipe extends only into the uppermost vibrating screen. The jujube powder lumps in the vibrating screen enter the slag tray through the rectangular through-holes. The jujube powder lumps are gathered by the slag tray and fall into the discharge pipe, and then enter the powder rubbing box through the discharge pipe for grinding. The ground jujube powder falls back into the vibrating screen for screening through the auger; the powder rubbing box has a built-in sieve plate, and the upper surface of the sieve plate is slidably connected with a friction block. The jujube powder lumps entering the powder rubbing box are ground on the sieve plate by the reciprocating friction block.

[0008] Furthermore, a mounting hole is provided on the side of the vibrating screen, and an ultrasonic vibration head is fixedly inserted in the mounting hole. The end of the ultrasonic vibration head is facing upward and in contact with the lower surface of the vibrating screen. The end of the ultrasonic vibration head is externally connected to an ultrasonic generator, and the ultrasonic vibration head is driven to vibrate by the ultrasonic generator, thereby transmitting the vibration force to the screen of the vibrating screen to screen the date powder.

[0009] Furthermore, the outer sides of the upper and lower ports of the vibrating screen are both provided with flanges, and screw holes are opened in a circumferential manner on the flanges. When multiple vibrating screens are assembled, the multiple vibrating screens are connected together by passing bolts through the screw holes.

[0010] Furthermore, a diverter plate is provided at one end of the inner side of the rectangular through hole. The diverter plate is an arc-shaped structure. When the vibrating screen vibrates, the jujube powder agglomerates accumulate at the edge of the vibrating screen due to the vibration force and its own weight and move in a circular motion. The diverter plate intercepts the jujube powder agglomerates and guides them into the slag tray through the rectangular through hole.

[0011] Furthermore, the receiving tray is a conical structure as a whole, with the conical surface of the receiving tray facing upward, and a circle of edging is provided at the edge of the upper surface of the receiving tray. Springs are equidistantly arranged on the upper surface of the receiving tray in a circular manner, and short columns are provided at the upper and lower ends of the springs. The lower short column of the spring is connected to the receiving tray, and the upper short column of the spring is connected to the lower surface of the vibrating screen above the receiving tray. A discharge port is provided on the side of the receiving tray.

[0012] Furthermore, a sleeve is fixedly provided on the lower surface of the circular hole of the slag plate. When multiple vibrating screens are assembled, the sleeve of the upper vibrating screen is located directly above the circular hole of the slag plate on the lower vibrating screen.

[0013] Furthermore, a rack is centrally arranged on the upper surface of the friction block and is arranged along the length direction of the friction block. A thumbwheel is connected to the powder box via a rotating shaft, and the thumbwheel is intermittently engaged with the rack. One end of the thumbwheel's rotating shaft passes through the side wall of the powder box and is connected to a driver.

[0014] Furthermore, a limiting column is provided on the inner surface of the rear end of the powder box, a receiving hole is opened on the rear surface of the friction block, and the front end of the limiting column extends into the receiving hole. A reset spring is sleeved on the limiting column, and the front end of the reset spring contacts the rear surface of the friction block.

[0015] Furthermore, the screen plate is an arc-shaped structure, and the lower surface of the friction block is engraved with friction lines and fits with the screen plate; the upper surface of the friction block is an arc-shaped structure, and the rack is at the highest point of the arc-shaped surface.

[0016] Furthermore, the auger includes an outer tube, a discharge tube is arranged at the upper end of the outer tube, and a motor is arranged on the upper surface of the outer tube, a driving end of the motor is connected to a connecting shaft, and the connecting shaft is equipped with spiral blades.

[0017] Compared with the prior art, the present invention has the following beneficial effects: (1) In the present invention, the jujube powder agglomerates in the vibrating screen can enter the slag material tray through the rectangular through hole. The jujube powder agglomerates are gathered by the slag material tray and fall into the discharge pipe, and then enter the powder rubbing box for grinding. This design can effectively collect and process the jujube powder agglomerates, and prevent the agglomerates from affecting the normal screening process. The diverter plate provided at one end of the inner side of the rectangular through hole can accurately guide the jujube powder agglomerates through the rectangular through hole into the slag material tray, thereby improving the accuracy of agglomerate processing. Furthermore, the powder rubbing box has a built-in sieve plate and a friction block. The jujube powder agglomerates entering the powder rubbing box are ground on the sieve plate by the reciprocating friction block. The friction lines on the lower surface of the friction block and its fitting design with the arc sieve plate are conducive to more fully grinding the jujube powder agglomerates, so that the agglomerates become powder again for re-screening. The ground jujube powder falls back into the vibrating screen through the auger for screening, thereby realizing the cyclic screening and processing of the jujube powder, improving the utilization rate of the jujube powder, and reducing the waste of raw materials.

[0018] (2) In the present invention, the rack provided on the upper surface of the friction block is intermittently meshed with the thumbwheel in the powder box, and the thumbwheel is driven by a driver, which can accurately control the reciprocating motion of the friction block and ensure the consistency of the grinding effect. At the same time, the setting of the limit column and the spring plays a role in limiting and resetting the movement of the friction block, making the movement of the friction block more stable and reliable.

[0019] (3) The mesh sizes of the multiple vibrating screens in the present invention decrease from top to bottom, which can perform multi-level screening of jujube powder, effectively classify and screen jujube powder of different particle sizes, and improve the accuracy and efficiency of screening. The ultrasonic vibration head arranged on the side of the vibrating screen drives the ultrasonic vibration head to vibrate through the ultrasonic generator, and transmits the vibration force to the screen of the vibrating screen. This vibration mode can more effectively prevent the screen from being blocked, so that the jujube powder can pass through the screen more smoothly, further improving the screening efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 The three-dimensional structure of the screening equipment in the present invention Figure 1 .

[0021] Figure 2 The three-dimensional structure of the screening equipment in the present invention Figure 2 .

[0022] Figure 3 This is a schematic diagram of the assembly of the circulating screening mechanism of the screening equipment in the present invention.

[0023] Figure 4 It is a schematic diagram of the seismic screen disassembly in the present invention.

[0024] Figure 5 It is a top view of the vibrating screen in the present invention.

[0025] Figure 6 It is a cross-sectional view of the receiving tray in the present invention.

[0026] Figure 7 It is a cross-sectional view of the auger and the powder box thereof in the present invention.

[0027] Figure 8 It is the internal structure diagram of the powder box in the present invention.

[0028] Figure 9 It is an exploded view of the internal structure of the powder box in the present invention.

[0029] The corresponding relationship between the labels and component names in the figures is as follows: 100, receiving tray; 101, spring; 102, discharge port; 103, casing; 104, vibrating screen; 1041, diverter plate; 1042, slag tray; 1043, sleeve; 1044, mounting hole; 1045, ultrasonic vibration head; 200, auger; 201, motor; 202, spiral blade; 203, discharge pipe; 300, powder box; 301, sieve plate; 302, friction block; 3021, rack; 303, driver; 3031, dial wheel; 304, limit column; 305, discharge pipe; 306, connecting pipe. DETAILED DESCRIPTION

[0030] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0031] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0032] Secondly, the term "one embodiment" or "embodiment" herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in various places throughout this specification does not necessarily refer to the same embodiment, nor does it refer to a single or selective embodiment that is mutually exclusive of other embodiments. The present invention provides the following embodiments.

[0033] like Figure 1 and Figure 4 As shown in the figure, as the structural diagram of the jujube powder uninterrupted cycle screening equipment of this embodiment, the screening equipment in this embodiment includes a receiving tray 100, a casing 103 is provided on the lower surface of the receiving tray 100, and a plurality of vibrating screens 104 are provided on the receiving tray 100. The outer sides of the upper and lower ports of the vibrating screen 104 are provided with flanges, and screw holes are provided on the flanges in a circumferential manner. When the plurality of vibrating screens 104 are assembled, the plurality of vibrating screens 104 are connected together by passing bolts through the screw holes. In this embodiment, the jujube powder is put into the vibrating screen 104 on the uppermost layer, and a mounting hole 1044 is provided on the side of the vibrating screen 104. An ultrasonic vibration head 1045 is fixedly inserted in the mounting hole 1044, and the end of the ultrasonic vibration head 1045 is upwardly contacted with the lower surface of the vibrating screen 104, and the end of the ultrasonic vibration head 1045 is externally connected to an ultrasonic generator. The ultrasonic generator drives the ultrasonic vibration head 1045 to vibrate, thereby transmitting the vibration force to the screen of the vibrating screen 104 to screen the jujube powder. The screened jujube powder falls into the lower vibrating screen 104 and is screened again to ensure the screening effect. In this embodiment, the mesh size of the vibrating screen 104 decreases from top to bottom, thereby achieving fine screening of the jujube powder. At the same time, since the jujube powder contains sugar and will clump, a rectangular through hole is provided on the side of the vibrating screen 104, and a slag tray 1042 is connected to the outer side of the rectangular through hole. A circular hole is provided on the lower front surface of the slag tray 1042. When the vibrating screen 104 vibrates, the jujube powder clumps accumulate at the edge of the vibrating screen 104 due to the vibration force and its own weight and make a circular motion, thereby passing through the rectangular through hole and entering the slag tray 1042, and then being discharged from the circular hole on the slag tray 1042. Figure 5Furthermore, a diverter plate 1041 is provided at one end of the inner side of the rectangular through hole. The diverter plate 1041 is an arc-shaped structure. When the vibrating screen 104 vibrates, the diverter plate 1041 intercepts the jujube powder agglomerates that move to the edge of the vibrating screen 104 and guides the jujube powder agglomerates into the slag tray 1042 through the rectangular through hole. When multiple vibrating screens 104 are assembled, their slag trays 1042 are on the same axis, so that the agglomerates removed from the vibrating screen 104 can fall to the same position, which is convenient for collection and processing.

[0034] exist Figure 2 In the embodiment, since the vibrating screen 104 has a certain depth and the slag tray 1042 is installed close to the bottom of the vibrating screen 104, the slag tray 1042 between the upper and lower vibrating screens 104 has a certain height. When the jujube powder agglomerates move onto the slag tray 1042, splashing occurs when they fall through the circular hole. Therefore, in this embodiment, a sleeve 1043 is fixedly provided on the lower surface of the circular hole of the slag tray 1042 to constrain the falling jujube powder agglomerates through the sleeve 1043. When multiple vibrating screens 104 are installed, the slag tray 1042 between the upper and lower vibrating screens 104 has a certain height. 04, when assembling, the sleeve 1043 of the upper vibrating screen 104 is located just above the circular hole of the slag disc 1042 on the lower vibrating screen 104, thereby ensuring that the jujube powder agglomerates pass through the circular holes of the slag disc 1042 on each layer of the vibrating screen 104 smoothly. Further, when assembling multiple vibrating screens 104, the sleeve 1043 plays a positioning role, and the sleeve 1043 of the upper vibrating screen 104 is located just above the circular hole of the slag disc 1042 on the lower vibrating screen 104, ensuring that the relative position of the structure is accurate. Figure 3 In this embodiment, a feed pipe 305 is connected to the lower surface of the circular hole of the slag tray 1042 on the bottom vibration screen 104, and the end of the feed pipe 305 is connected to the powder box 300. In this embodiment, the jujube powder agglomerates gathered in the slag tray 1042 are transported to the powder box 300 for grinding through the feed pipe 305. The powder box 300 is hidden in the casing 103 and is a grinding place for the jujube powder agglomerates. The powder box 300 has a built-in sieve plate 301, and the upper surface of the sieve plate 301 is slidably connected with a friction block 302. The jujube powder agglomerates entering the powder box 300 are rubbed on the sieve plate 301 by the reciprocating friction block 302. 2. To achieve grinding, one end of the lower surface of the powder box 300 is connected to a connecting pipe 306, the end of the connecting pipe 306 is connected to an auger 200, and the upper end of the auger 200 is connected to a discharge pipe 203, which extends only into the uppermost vibration screen 104. The jujube powder agglomerates in the vibration screen 104 enter the slag tray 1042 through the rectangular through-holes. The jujube powder agglomerates are gathered by the slag tray 1042 and fall into the discharge pipe 305, and then enter the powder box 300 through the discharge pipe 305 for grinding. The ground jujube powder falls back onto the vibration screen 104 for screening through the auger 200. It should be noted that Figure 7In the embodiment, the auger 200 is essentially the same as the existing spiral feeding device. The specific auger 200 includes an outer tube, a discharge pipe 203 is arranged at the upper end of the outer tube, and a motor 201 is provided on the upper surface of the outer tube. The driving end of the motor 201 is connected to a connecting shaft, and the connecting shaft is equipped with spiral blades 202. The motor 201 drives the connecting shaft to rotate synchronously, and the spiral blades 202 on the connecting shaft spirally feed the jujube powder accumulated at the bottom of the outer tube.

[0035] exist Figure 6 In the embodiment, the receiving tray 100 is a conical structure as a whole, and the conical surface of the receiving tray 100 faces upwards. When the material falls on the receiving tray, the material will naturally converge toward the bottom of the cone under the action of gravity due to the inclined upper surface of the cone. This convergence effect does not require additional power or complex mechanical devices, and can effectively collect the material falling from the vibrating screen, reducing the scattered accumulation of the material on the receiving tray. Furthermore, compared with the planar structure, the conical upper surface can concentrate the material to a specific area more quickly. In this embodiment, the jujube powder contains sugar, so its fluidity is poorer than that of ordinary powder. The conical structure helps to overcome its own viscosity and insufficient fluidity, so that the material can be collected more efficiently. A circle of rim is provided at the edge of the upper surface of the receiving tray 100 to prevent the jujube powder from overflowing from the edge. The upper surface of the receiving tray 100 is circular. Springs 101 are arranged at equal intervals in a Zhou style, and short columns are provided at the upper and lower ends of the spring 101. The lower short column of the spring 101 is connected to the receiving tray 100, and the upper short column of the spring 101 is connected to the lower surface of the vibrating screen 104 above the receiving tray 100. In this embodiment, the short columns at the upper and lower ends are respectively connected to the receiving tray 100 and the vibrating screen 104, which play a role of buffering and supporting, so that there is a certain elastic connection relationship between the vibrating screen 104 and the receiving tray 100, which alleviates the influence of the vibrating screen 104 on the connecting tray 100 after ultrasonic vibration to a certain extent. A discharge port 102 is provided on the side of the receiving tray 100 for sweeping out the jujube powder.

[0036] exist Figure 8 and Figure 9In this embodiment, a rack 3021 is centrally provided on the upper surface of the friction block 302, and the rack 3021 is arranged along the length direction of the friction block 302. A thumbwheel 3031 is connected to the powder box 300 by a rotating shaft, and the thumbwheel 3031 is intermittently meshed with the rack 3021. The rack 3021 is a key component for transmitting power to make the friction block 302 produce reciprocating motion. The thumbwheel 3031 is pushed to achieve friction with the sieve plate 301. The thumbwheel 3031 rotates and drives the friction block 302 to reciprocate on the sieve plate 301 through the engagement with the rack 3021, thereby achieving the grinding of the jujube powder agglomerates. One end of the rotating shaft of the thumbwheel 3031 passes through the side wall of the powder box 300 and is connected to the driver 303. In this embodiment, the thumbwheel 30 31 is rotated by the driver 303 driving the rotating shaft to rotate, and then the middle dial wheel 3031 drives the rack 3021 to move on the sieve plate 301 to rub the jujube powder lumps into powder; a limiting column 304 is provided on the inner surface of the rear end of the powder box 300, and a receiving hole is provided on the rear surface of the friction block 302, and the front end of the limiting column 304 extends into the receiving hole. In this embodiment, the limiting column 304 is provided on the inner surface of the rear end of the powder box 300, and the front end extends into the receiving hole on the rear surface of the friction block 302, which plays a role in limiting the movement direction of the friction block 302 and preventing the friction block 302 from deviating or deviating from the established track during movement. A reset spring is sleeved on the limiting column 304, and the front end of the reset spring contacts the rear surface of the friction block 302. In this embodiment, it is sleeved on the limiting column 304, and the front end is in contact with the rear surface of the friction block 302. During the movement of the friction block 302, the return spring plays a role of buffering and resetting. When the dial wheel 3031 is disengaged from the rack 3021, the return spring can make the friction block 302 return to the initial position, thereby cooperating with the dialing of the dial wheel 3031 to enable the friction block 302 to move repeatedly; the sieve plate 301 is a bearing platform for the jujube powder agglomerates, and the jujube powder agglomerates are ground under the reciprocating motion of the friction block 302. At the same time, the sieve plate 301 is an arc-shaped structure, and its arc-shaped structure helps the aggregation and flow of materials. Furthermore, in this embodiment, the lower surface of the friction block 302 is provided with friction lines and fits with the sieve plate 301, and the upper surface is provided with teeth The rack 3021 makes a reciprocating motion on the sieve plate 301 under the action of the dial wheel 3031 and the driver 303, and grinds the jujube powder lumps falling on the sieve plate 301 through the friction lines. When the jujube powder lumps enter the powder box 300 through the discharge pipe 305, some of the jujube powder lumps will fall on the upper surface of the friction block 302 due to inertia. Therefore, in this embodiment, the upper surface of the friction block 302 is an arc-shaped structure, and the arc-shaped surface is used to make the jujube powder lumps falling on the upper surface of the friction block 302 slide onto the sieve plate 301, and the rack 3021 is at the highest point of the arc-shaped surface. The design of its arc-shaped upper surface and the rack 3021 at the highest point of the arc-shaped surface is conducive to the engagement with the dial wheel 3031 and the stability during the movement.

[0037] When the powder box 300 of this embodiment is working, the driver 303 is started, driving the thumbwheel 3031 to rotate. During the rotation of the thumbwheel 3031, due to its intermittent engagement with the rack 3021 on the upper surface of the friction block 302, when engaged, the thumbwheel 3031 will push the friction block 302 to move forward (according to the design direction) along the sieve plate 301. Due to the presence of the limit column 304 and the return spring sleeved thereon, the friction block 302 can only move linearly in a predetermined direction, and the return spring acts as a buffer in this process. When the thumbwheel 3031 is disengaged from the rack 3021, the return spring will cause the friction block 302 to move back a certain distance to prepare for the next push. During the reciprocating motion of the friction block 302, the friction lines on its lower surface continuously rub against the sieve plate 301, thereby grinding the jujube powder lumps falling on the sieve plate 301. The arc structure of the sieve plate 301 helps the jujube powder lumps to gather and flow during the grinding process, thereby improving the grinding effect.

[0038] According to the above technical solution, the working process of the device in this embodiment is as follows: 1. The jujube powder first enters the vibrating screen 104 at the top. The mesh size of the vibrating screen 104 decreases from top to bottom, which allows the jujube powder to be gradually screened on different levels of the vibrating screen; 2. An ultrasonic vibrating head 1045 is fixedly inserted into the mounting hole 1044 on the side of the vibrating screen 104, and an ultrasonic generator is externally connected to the end thereof. The ultrasonic generator drives the ultrasonic vibrating head 1045 to vibrate, and transmits the vibration force to the screen of the vibrating screen 104, thereby assisting in screening the jujube powder. During the vibration process of the vibrating screen 104, the jujube powder lumps accumulate at the edge of the vibrating screen 104 due to the vibration force and its own weight and move in a circular motion. Furthermore, the arc-shaped diverter plate 1041 at one end of the inner side of the rectangular through hole of the vibrating screen 104 intercepts the jujube powder lumps, and guides the jujube powder lumps through the rectangular through hole into the slag tray 1042. At the same time, the outer sides of the upper and lower ports of the vibrating screen 104 are provided with flanges, and screw holes are provided on the flanges. When assembling, multiple vibrating screens 104 are connected together by bolts passing through the screw holes to ensure the stability of the structure. 3. The jujube powder entering the slag tray 1042 clumps together. Since the slag trays 1042 of the multiple vibrating screens 104 are on the same axis when assembled and the sleeve 1043 of the upper vibrating screen 104 is located directly above the circular hole of the slag tray 1042 on the lower vibrating screen 104, the discharge pipe 305 connected to the lower surface of the circular hole of the slag tray 1042 on the bottom vibrating screen 104 transports the jujube powder clumps to the powder box 300. In the powder box 300, the driver 303 drives the dial wheel 3031 to rotate. The dial wheel 3031 is intermittently meshed with the rack 3021 arranged in the middle of the upper surface of the friction block 302 and along the length direction, thereby The friction block 302 moves on the sieve plate 301, and the friction lines engraved on the lower surface of the friction block 302 fit with the arc-shaped sieve plate 301 to grind the jujube powder lumps entering the powder box 300. The front end of the limiting column 304 provided on the inner surface of the rear end of the powder box 300 extends into the receiving hole on the rear surface of the friction block 302. The front end of the return spring sleeved on the limiting column 304 contacts the rear surface of the friction block 302. The return spring is used to reset the friction block 302 when it is not toggled by the dial wheel 3031. The return spring and the dial wheel 3031 combine to realize the reciprocating motion of the friction block 302 on the sieve plate 301. 4. The ground jujube powder enters the auger 200 through the connecting pipe 306 connected to one end of the lower surface of the powdering box 300. The motor 201 installed on the upper surface of the outer tube of the auger 200 drives the connecting shaft to rotate. The spiral blades 202 installed on the connecting shaft transport the jujube powder upward. The discharge pipe 203 connected to the upper end of the auger 200 returns the jujube powder to the topmost vibrating screen 104, where the jujube powder is screened again, forming an uninterrupted cycle screening process.

[0039] The above content is a further detailed description of the present invention in conjunction with specific implementation methods. It cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, they can make several simple deductions or substitutions without departing from the concept of the present invention, which should be regarded as falling within the scope of protection determined by the claims submitted for the present invention.

Claims

1. A non-stop cycle screening device for jujube powder, comprising a receiving tray (100), a lower surface of which is provided with a protective tube (103), a plurality of vibrating screens (104) provided on the receiving tray (100), and the mesh sizes of the vibrating screens (104) decrease from top to bottom. Its characteristics are: A rectangular through hole is provided on the side of the vibrating screen (104), and a slag tray (1042) is connected to the outside of the rectangular through hole. A circular hole is provided on the lower surface of the front end of the slag tray (1042). When multiple vibrating screens (104) are assembled, the slag trays (1042) are on the same axis. A discharge pipe (305) is connected to the lower surface of the circular hole of the slag tray (1042) on the bottom vibrating screen (104). The end of the discharge pipe (305) is connected to a powder box (300). The powder box (300) is hidden in the casing (103). One end of the lower surface of the powder box (300) is connected to a connecting rod. A connecting pipe (306) is connected to the end of the connecting pipe (306) with an auger (200), and the upper end of the auger (200) is connected to a discharge pipe (203). The discharge pipe (203) extends only into the uppermost vibration screen (104). The jujube powder agglomerates in the vibration screen (104) enter the slag material tray (1042) through the rectangular through-holes. The jujube powder agglomerates are gathered by the slag material tray (1042) and fall into the discharge pipe (305). Then, the jujube powder agglomerates are passed through the discharge pipe (305) and enter the powder rubbing box (300) for grinding. The ground jujube powder passes through the auger (200) and falls back onto the vibration screen (104) for screening. The powder box (300) has a built-in sieve plate (301), and a friction block (302) is slidably connected to the upper surface of the sieve plate (301). The jujube powder agglomerates entering the powder box (300) and are ground on the sieve plate (301) by the reciprocating friction block (302).

2. The jujube powder uninterrupted cycle screening equipment according to claim 1 is characterized in that: A mounting hole (1044) is provided on the side of the vibrating screen (104), and an ultrasonic vibration head (1045) is fixedly inserted into the mounting hole (1044). The end of the ultrasonic vibration head (1045) faces upward and contacts the lower surface of the vibrating screen (104). The end of the ultrasonic vibration head (1045) is externally connected to an ultrasonic generator, and the ultrasonic vibration head (1045) is driven by the ultrasonic generator to vibrate, thereby transmitting the vibration force to the screen of the vibrating screen (104) to screen the jujube powder.

3. The jujube powder uninterrupted cycle screening equipment according to claim 1 is characterized in that: The outer sides of the upper and lower ports of the vibrating screen (104) are both provided with flanges, and screw holes are opened in a circumferential manner on the flanges. When multiple vibrating screens (104) are assembled, the multiple vibrating screens (104) are connected together by bolts passing through the screw holes.

4. The jujube powder uninterrupted cycle screening equipment according to claim 2, characterized in that: A diverter plate (1041) is provided at one end of the inner side of the rectangular through hole. The diverter plate (1041) is an arc-shaped structure. When the vibrating screen (104) vibrates, the jujube powder agglomerates accumulate at the edge of the vibrating screen (104) due to the vibration force and its own weight and move in a circular motion. The diverter plate (1041) intercepts the jujube powder agglomerates and guides the jujube powder agglomerates into the slag tray (1042) through the rectangular through hole.

5. The jujube powder uninterrupted cycle screening equipment according to claim 1 is characterized in that: The receiving tray (100) is a conical structure as a whole, with the conical surface of the receiving tray (100) facing upward, and a circle of edges is provided at the edge of the upper surface of the receiving tray (100), and springs (101) are provided on the upper surface of the receiving tray (100) in a circular manner and equidistantly, and short columns are provided at the upper and lower ends of the spring (101), the lower short column of the spring (101) is connected to the receiving tray (100), and the upper short column of the spring (101) is connected to the lower surface of the vibrating screen (104) above the receiving tray (100), and a discharge port (102) is provided on the side of the receiving tray (100).

6. The jujube powder uninterrupted cycle screening equipment according to claim 1, characterized in that: A sleeve (1043) is fixedly provided on the lower surface of the circular hole of the slag tray (1042). When multiple vibrating screens (104) are assembled, the sleeve (1043) of the upper vibrating screen (104) is located directly above the circular hole of the slag tray (1042) on the lower vibrating screen (104).

7. The jujube powder uninterrupted cycle screening equipment according to claim 1, characterized in that: A rack (3021) is centrally provided on the upper surface of the friction block (302), and the rack (3021) is arranged along the length direction of the friction block (302). A thumbwheel (3031) is connected to the powder box (300) via a rotating shaft, and the thumbwheel (3031) and the rack (3021) are intermittently meshed. One end of the rotating shaft of the thumbwheel (3031) passes through the side wall of the powder box (300) and is connected to the driver (303).

8. The jujube powder uninterrupted cycle screening equipment according to claim 7, characterized in that: A limiting column (304) is provided on the inner surface of the rear end of the powder box (300), a receiving hole is provided on the rear surface of the friction block (302), and the front end of the limiting column (304) extends into the receiving hole. A return spring is sleeved on the limiting column (304), and the front end of the return spring contacts the rear surface of the friction block (302).

9. The jujube powder uninterrupted cycle screening equipment according to claim 1, characterized in that: The sieve plate (301) is an arc-shaped structure, and the lower surface of the friction block (302) is engraved with friction lines and fits with the sieve plate (301); the upper surface of the friction block (302) is an arc-shaped structure, and the rack (3021) is at the highest point of the arc-shaped surface.

10. The jujube powder uninterrupted cycle screening equipment according to claim 1, characterized in that: The auger (200) comprises an outer tube, a discharge tube (203) is arranged at the upper end of the outer tube, and a motor (201) is arranged on the upper surface of the outer tube. The driving end of the motor (201) is connected to a connecting shaft, and the connecting shaft is equipped with a spiral blade (202).

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