A screening device for vitamin D production

Abstract

This utility model discloses a sieving device for vitamin D production, including a base, a lower support ring, a lower vibration spring, a lower mounting plate, and multiple sieve layers. The compression degree of the lower and upper vibration springs is controlled by adjusting the limiting rod, thus changing the vibration amplitude of the sieve layers to adapt to powders with different moisture levels. An upper feed ring, a folded hose, and a lower feed ring form the feeding mechanism. The conveying pipe rotates under the vibration of the sieve layers to achieve uniform material feeding. Gears, racks, ratchet mechanisms, and limiting plates on the side plates allow for convenient adjustment and reset of the limiting rod position. A motor-driven eccentric wheel provides vibration for the device. This device solves the problem of sieving different batches of vitamin D powder, prevents powder loss and cross-contamination, allows for flexible adjustment of sieving specifications, and improves sieving efficiency and product quality.

Description

Technical Field

[0001] This application relates to the field of vitamin D screening technology, specifically to a screening device for vitamin D production. Background Technology

[0002] In the production of vitamin D, sieving is a crucial step in ensuring product quality. However, vitamin D powder produced in different batches exhibits significant differences in physical properties. Regarding humidity, some batches may have higher humidity due to fluctuations in the production environment or process, while others are relatively dry. Initial particle size distribution also varies, potentially affecting the ease of sieving. Differences in viscosity also impact sieving efficiency. Traditional sieving equipment typically uses fixed sieving parameters, making it difficult to handle these differences, resulting in poor sieving performance for some batches and affecting product quality stability.

[0003] Furthermore, during the sieving of dried vitamin D powder, vibration causes the powder to easily spread and fly around. This not only wastes raw materials, resulting in lower-than-expected yields, but may also affect the consistency of composition between product batches. Moreover, the flying powder may drift to other areas of the workshop, easily causing cross-contamination if these areas are used for other product production; even if still used for vitamin D production, differences in the timing and conditions of secondary powder mixing can compromise product quality uniformity. For powders with high moisture content, they easily adhere to each other and accumulate on the screen, severely reducing sieving efficiency and effectiveness.

[0004] Meanwhile, traditional screening devices often struggle to flexibly adjust screening specifications, failing to meet diverse production needs. Furthermore, uneven powder accumulation on the screen is a common problem, further reducing screening efficiency. Therefore, developing a screening device that can adapt to the differences in characteristics between different batches of vitamin D powder, prevent powder loss and cross-contamination, solve the problem of screening powders with high moisture content, flexibly adjust screening specifications, and achieve uniform material feeding is of great significance. Summary of the Invention

[0005] To address the aforementioned technical problems, this application solves the issues of insufficient adaptability to the characteristics of different batches of powder in the prior art, difficulty in flexibly adjusting sieving specifications to adapt to different sieving needs, and uneven accumulation of powder on the screen.

[0006] To achieve the above objectives, the technical solution adopted in this application is as follows: a sieving device for vitamin D production, comprising a base, a lower support ring fixedly mounted on the base, a plurality of lower vibration springs fixedly mounted on the lower support ring, a lower mounting plate fixedly mounted on the lower vibration springs, and multiple layers of sieve layers mounted on the lower mounting plate. Two side plates are fixedly mounted on the lower support ring, and a limit rod is slidably mounted on the groove of the side plate. A connecting shaft is rotatably mounted on the end of the limit rod away from the lower support ring, and an upper support ring is fixedly mounted on the end of the connecting shaft away from the limit rod. A plurality of upper vibration springs are fixedly mounted on the end of the upper support ring near the lower support ring, and an upper mounting plate is fixedly mounted on the end of the upper vibration springs near the lower support ring. The upper mounting plate is connected to the sieve layers.

[0007] To better realize this application, the upper support ring is further provided with an installation groove, on which an upper feeding ring is movably installed. A folded hose is fixedly installed on the upper feeding ring. The folded hose has a folded structure. A lower feeding ring is rotatably installed at one end of the folded hose near the lower support ring. Three feeding support blocks are fixedly installed on the lower feeding ring. The feeding support blocks are L-shaped. A feeding installation ring is fixedly installed on the upper mounting plate. The three feeding support blocks are rotatably connected to the outer wall of the feeding installation ring.

[0008] To better realize this application, a bearing plate is fixedly provided on the lower feed ring, and a conveying pipe is fixedly provided on the bearing plate. The conveying pipe has a torsion structure.

[0009] To better realize this application, a gear is rotatably provided on the side plate, a rack is fixedly installed on the end of the limiting rod near the gear, the rack meshes with the gear, a control rod is rotatably provided on the shaft of the gear, and a ratchet mechanism is provided between the gear and the control rod.

[0010] To better realize this application, a limiting plate is further fixedly provided at the end of the limiting rod away from the gear, and the limiting plate is provided with multiple grooves.

[0011] To better realize this application, a limiting short plate is slidably provided on the side plate, and a protrusion is provided at one end of the limiting short plate near the gear, which matches the groove on the limiting long plate.

[0012] To better realize this application, a sliding rod is fixedly provided on the limiting short plate, the sliding rod is slidably provided on the side plate, and a support spring is sleeved on the sliding rod, with the two ends of the support spring being fixedly connected to the sliding rod and the side plate respectively.

[0013] To better realize this application, further, a mounting plate is fixedly provided on the lower mounting plate, a motor is fixedly installed on the mounting plate, the output end of the motor is rotatably connected to the lower mounting plate, and an eccentric wheel is fixedly provided on the output end of the motor.

[0014] The technical solution provided in this application has the following advantages compared with the prior art:

[0015] 1. This application, through the coordinated operation of a powder characteristic detection device and an intelligent control system, combined with an adaptive vibration amplitude adjustment mechanism and a multi-angle feeding guide mechanism, can accurately adapt to the characteristic differences of different batches of vitamin D powder, ensuring that each batch can achieve the ideal screening effect, improving product quality stability and raw material utilization.

[0016] 2. This application flexibly adjusts the vibration amplitude of the sieve layer according to the degree of powder dryness, effectively reducing the diffusion and flying of dry powder during the sieving process, reducing the amount of powder lost in the air, avoiding raw material waste, ensuring product output, and maintaining a clean workshop environment while reducing the risk of cross-contamination.

[0017] 3. This application targets powders with high moisture content. By adjusting the vibration amplitude and uniform feeding, it avoids powder accumulation and mutual adsorption, thereby improving screening efficiency and effect and ensuring product quality uniformity.

[0018] 4. This application allows for convenient adjustment of the number of screening layers and precise control of vibration amplitude according to actual screening needs, enabling the device to adapt to various screening specifications, improving the versatility and applicability of the device, and meeting the needs of different production scenarios.

[0019] 5. This application utilizes the vibration of the sieve layer to drive the rotation of the conveying pipe, thereby achieving uniform distribution of powder on the sieve mesh, avoiding local accumulation, significantly improving sieving efficiency, reducing the problem of incomplete sieving caused by powder accumulation, and further improving product quality. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the overall structure of this application;

[0021] Figure 2 This is a schematic diagram of the structure of the bearing plate in this application;

[0022] Figure 3 This is a schematic diagram of the material conveying pipe of this application;

[0023] Figure 4 This is a schematic diagram of the mounting plate structure under this application;

[0024] Figure 5 for Figure 4 Enlarged view of the local structure at point A;

[0025] Figure 6 This is a cross-sectional view of this application.

[0026] In the diagram: 101-Base; 102-Lower support ring; 103-Lower vibration spring; 104-Lower mounting plate; 105-Screening layer; 107-Upper mounting plate; 108-Upper vibration spring; 109-Upper support ring; 110-Upper feed ring; 111-Folded hose; 112-Lower feed ring; 113-Feed support block; 114-Feed mounting ring; 115-Connecting shaft; 116-Bearing plate; 117-Feeding pipe; 118-Limiting rod; 119-Rack; 120-Gear; 121-Side plate; 123-Control rod; 124-Limiting long plate; 125-Limiting short plate; 126-Slide rod; 127-Support spring; 128-Motor; 129-Eccentric wheel; 130-Mounting plate. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0029] like Figures 1 to 6 As shown, a sieving device for vitamin D production includes a base 101, a lower support ring 102 fixedly mounted on the base 101, a plurality of lower vibration springs 103 fixedly mounted on the lower support ring 102, a lower mounting plate 104 fixedly mounted on the lower vibration springs 103, and a multi-layer sieve layer 105 mounted on the lower mounting plate 104. Two side plates 121 are fixedly mounted on the lower support ring 102, and a limit rod 118 is slidably mounted on the groove of the side plate 121. A connecting shaft 115 is rotatably mounted on the end of the limit rod 118 away from the lower support ring 102. An upper support ring 109 is fixedly mounted on the end of the connecting shaft 115 away from the limit rod 118. A plurality of upper vibration springs 108 are fixedly mounted on the end of the upper support ring 109 near the lower support ring 102, and an upper mounting plate 107 is fixedly mounted on the end of the upper vibration springs 108 near the lower support ring 102. The upper mounting plate 107 is connected to the sieve layer 105.

[0030] Specifically, during the sieving of vitamin D powder, the number of sieving layers 105 between the lower mounting plate 104 and the upper mounting plate 107 is adjusted according to the sieving requirements, i.e., the number of sieving grades. Then, the lower mounting plate 104 and the upper mounting plate 107 at both ends are used to fix the middle sieving layers 105. Specifically, the limiting rod 118 moves downwards on the side plate 121, and the upper end of the limiting rod 118 pulls the upper support ring 109 towards the lower mounting plate 104 via the connecting shaft 115. The upper support ring 109, through the upper vibration spring 108, pushes the upper mounting plate 107 to squeeze the sieving layers 105, which in turn squeezes the lower mounting plate 104 downwards. The lower vibration spring 103 below the mounting plate 104 stabilizes the intermediate sieve layer 105 through the compression of the lower vibration spring 103 and the upper vibration spring 108. By changing the elastic force of the lower vibration spring 103 and the upper vibration spring 108, the vibration amplitude of the lower mounting plate 104 and the sieve layer 105 is adjusted. That is, the more the lower vibration spring 103 and the upper vibration spring 108 are compressed, the smaller the amplitude of vibration that the lower vibration spring 103 and the upper vibration spring 108 can perform. As a result, the vibration transmitted to the upper vibration spring 108 through the lower mounting plate 104 and the upper mounting plate 107 is smaller, and the movement speed of vitamin D powder on the filter screen inside the sieve layer 105 is slower, which reduces the diffusion ability of the powder.

[0031] When the relatively dry powder is vibrated, it spreads and flies in all directions, floating in the space inside the sieve layer 105. Ultimately, some vitamin D powder is lost into the air and cannot be effectively collected for subsequent processing or packaging. This directly leads to the actual yield of the final product being lower than expected, resulting in raw material waste. It may also affect the consistency of composition between product batches and reduce product quality stability.

[0032] The airborne powder may scatter throughout the workshop, landing on other equipment, raw materials, or work areas. If these areas are subsequently used for the production of other products, it may cause cross-contamination, affecting the quality of those products. Even if the products are still used for vitamin D production, the timing and conditions of the secondary mixing of powder may affect the overall uniformity of product quality.

[0033] For powder batches with high humidity, the degree of compression of the lower vibration spring 103 and the upper vibration spring 108 can be controlled by adjusting the position of the limit rod 118, thereby increasing the ability of the lower vibration spring 103 and the upper vibration spring 108 to shake, and enabling the sieve layer 105 to obtain a larger vibration amplitude, which is beneficial to the dispersion of powder and its passage through the sieve.

[0034] like Figures 1 to 3As shown, the upper support ring 109 is provided with an installation groove, on which an upper feed ring 110 is movably mounted. A folded hose 111 is fixedly mounted on the upper feed ring 110. The folded hose 111 has a foldable structure. A lower feed ring 112 is rotatably mounted at one end of the folded hose 111 near the lower support ring 102. Three feed support blocks 113 are fixedly mounted on the lower feed ring 112. The feed support blocks 113 are L-shaped. A feed mounting ring 114 is fixedly mounted on the upper mounting plate 107. The three feed support blocks 113 are rotatably connected to the outer wall of the feed mounting ring 114.

[0035] Specifically, the upper feed ring 110 has an inverted conical structure, and the size of its upper end face is larger than the inner diameter of the upper support ring 109. Therefore, when installing the upper feed ring 110, the lower end of the upper feed ring 110 is directly inserted into the inner opening of the upper support ring 109, allowing the upper feed ring 110 to rest freely on the upper support ring 109. Through gravity, the mounting groove of the upper support ring 109 and the corresponding fitting block on the upper feed ring 110 cooperate to install the upper feed ring 110, limiting the shaking of the upper feed ring 110, but not affecting the vertical up and down movement of the upper feed ring 110, making it convenient for workers to install and remove the upper feed ring 110.

[0036] like Figure 3 As shown, a bearing plate 116 is fixedly installed on the lower feed ring 112, and a conveying pipe 117 is fixedly installed on the bearing plate 116. The conveying pipe 117 has a torsion structure.

[0037] Specifically, the conveying pipe 117 is equipped with a through-groove structure. The vitamin D powder on the support plate 116 enters through the opening at the upper end of the conveying pipe 117, then slides down along the arc surface of the conveying pipe 117, and is discharged through the opening at the lower end of the conveying pipe 117, falling into the uppermost sieve layer 105.

[0038] During use, the vibration of the sieve layer 105 is transmitted to the three feed support blocks 113 through the feed mounting ring 114. After being vibrated, the feed support blocks 113 slowly rotate on the feed mounting ring 114. When the feed support blocks 113 rotate, they will drive the lower feed ring 112, the bearing plate 116 and the conveying pipe 117 to rotate, thereby changing the relative position of the lower opening of the conveying pipe 117 on the sieve layer 105. This achieves uniform feeding of vitamin D powder on the sieve layer 105, avoiding the accumulation of powder in one place, which reduces the sieving efficiency. Furthermore, accumulation causes the powder to have a certain adsorption force on each other, which will seriously affect the sieving effect for powder with high moisture content.

[0039] like Figure 1 , Figure 4 and Figure 5As shown, a gear 120 is rotatably mounted on the side plate 121, and a rack 119 is fixedly mounted on one end of the limiting rod 118 near the gear 120. The rack 119 meshes with the gear 120, and a control rod 123 is rotatably mounted on the shaft of the gear 120. A ratchet mechanism is provided between the gear 120 and the control rod 123.

[0040] Specifically, the control lever 123 is equipped with a pawl and a torsion spring, and the gear 120 is equipped with a ratchet. The operator controls the control lever 123 to swing back and forth, thereby causing the control lever 123 to drive the gear 120 to rotate on the side plate 121 in one direction via the ratchet mechanism. Through the reciprocating swing of the control lever 123, the gear 120 is repeatedly controlled to rotate in one direction. Furthermore, the gear 120, through its meshing with the rack 119, causes the limiting rod 118 and the rack 119 to slide in the groove of the side plate 121, thus adjusting the position of the limiting rod 118, and consequently adjusting the compression degree of the lower vibration spring 103 and the screen layer 105.

[0041] like Figure 4 and Figure 5 As shown, a limiting plate 124 is fixedly provided at the end of the limiting rod 118 away from the gear 120, and the limiting plate 124 is provided with multiple grooves.

[0042] like Figure 4 and Figure 5 As shown, a limiting short plate 125 is slidably provided on the side plate 121. A protrusion is provided at one end of the limiting short plate 125 near the gear 120, and the protrusion matches the groove on the limiting long plate 124.

[0043] Specifically, by controlling the sliding of the limiting short plate 125 on the side plate 121, the protrusion on the limiting short plate 125 is inserted into or moved away from the groove of the limiting long plate 124, thereby achieving the restriction and release of the limiting long plate 124 and the limiting rod 118.

[0044] like Figure 5 As shown, a sliding rod 126 is fixedly installed on the limiting short plate 125. The sliding rod 126 is slidably installed on the side plate 121. A support spring 127 is sleeved on the sliding rod 126. The two ends of the support spring 127 are fixedly connected to the sliding rod 126 and the side plate 121, respectively.

[0045] Specifically, a handle is provided at the end of the slide bar 126 away from the limiting plate 124. The operator controls the handle to make the slide bar 126 slide laterally on the side plate 121, thereby stretching the support spring 127 and causing the limiting short plate 125 to move away from the limiting plate 124. This causes the protrusion of the limiting short plate 125 to disengage from the groove of the limiting plate 124 and engage with the limiting plate 124, allowing the position of the limiting rod 118 to be adjusted. After adjustment, the handle is released, and the spring force of the support spring 127 resets the position, causing the protrusion of the limiting short plate 125 to re-insert into the groove of the limiting plate 124, thus achieving the restriction of the limiting rod 118 and the limiting plate 124.

[0046] When it is necessary to reset the limit rod 118, that is, to reset the lower vibration spring 103 and the upper vibration spring 108, the control limit short plate 125 is disengaged from the limit long plate 124. Then, the control rod 123 slides away from the gear 120 on the shaft of the gear 120, thereby disengaging the pawl on the control rod 123 from the ratchet on the gear 120. As a result, the gear 120 is no longer restricted and, under the action of the lower vibration spring 103 and the screen layer 105, it quickly resets and drives the limit rod 118 to reset, and drives the gear 120 to rotate through the rack 119. After the reset, the control rod 123 is manually reset, thereby engaging the pawl and the ratchet.

[0047] like Figure 4 and Figure 6 As shown, a mounting plate 130 is fixedly installed on the lower mounting plate 104, and a motor 128 is fixedly installed on the mounting plate 130. The output end of the motor 128 is rotatably connected to the lower mounting plate 104, and an eccentric wheel 129 is fixedly installed on the output end of the motor 128.

[0048] Specifically, the eccentric wheel 129 is driven to rotate by the motor 128, and the rotation of the eccentric wheel is used to achieve vibration. The output shaft of the motor 128 and the mounting plate 130 apply vibration to the lower mounting plate 104, thereby driving the vibration of multiple screen layers 105 and the upper mounting plate 107.

[0049] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A sieving device for vitamin D production, comprising a base (101), a lower support ring (102) fixedly mounted on the base (101), a plurality of lower vibration springs (103) fixedly mounted on the lower support ring (102), a lower mounting plate (104) fixedly mounted on the lower vibration springs (103), and a multi-layer sieve layer (105) disposed on the lower mounting plate (104), characterized in that: Two side plates (121) are fixedly installed on the lower support ring (102). A limit rod (118) is slidably installed on the groove of the side plate (121). A connecting shaft (115) is rotatably installed on the end of the limit rod (118) away from the lower support ring (102). An upper support ring (109) is fixedly installed on the end of the connecting shaft (115) away from the limit rod (118). Multiple upper vibration springs (108) are fixedly installed on the end of the upper support ring (109) close to the lower support ring (102). An upper mounting plate (107) is fixedly installed on the end of the upper vibration spring (108) close to the lower support ring (102). The upper mounting plate (107) is connected to the sieve layer (105).

2. The screening device for vitamin D production according to claim 1, characterized in that: The upper support ring (109) is provided with an installation groove, on which an upper feed ring (110) is movably installed. A folded hose (111) is fixedly installed on the upper feed ring (110). The folded hose (111) has a folded structure. A lower feed ring (112) is rotatably installed at one end of the folded hose (111) near the lower support ring (102). Three feed support blocks (113) are fixedly installed on the lower feed ring (112). The feed support blocks (113) are L-shaped. A feed installation ring (114) is fixedly installed on the upper mounting plate (107). The three feed support blocks (113) are rotatably connected to the outer wall of the feed installation ring (114).

3. A screening device for vitamin D production according to claim 2, characterized in that: A bearing plate (116) is fixedly installed on the lower feed ring (112), and a conveying pipe (117) is fixedly installed on the bearing plate (116). The conveying pipe (117) has a torsion structure.

4. A screening device for vitamin D production according to claim 1, characterized in that: A gear (120) is rotatably mounted on the side plate (121). A rack (119) is fixedly mounted on one end of the limiting rod (118) near the gear (120). The rack (119) meshes with the gear (120). A control rod (123) is rotatably mounted on the shaft of the gear (120). A ratchet mechanism is provided between the gear (120) and the control rod (123).

5. A screening device for vitamin D production according to claim 4, characterized in that: The end of the limiting rod (118) away from the gear (120) is fixedly provided with a limiting plate (124), and the limiting plate (124) is provided with multiple grooves.

6. A screening device for vitamin D production according to claim 5, characterized in that: A limiting short plate (125) is slidably provided on the side plate (121). A protrusion is provided at one end of the limiting short plate (125) near the gear (120), and the protrusion matches the groove on the limiting long plate (124).

7. A screening device for vitamin D production according to claim 6, characterized in that: A sliding rod (126) is fixedly installed on the limiting short plate (125). The sliding rod (126) is slidably installed on the side plate (121). A support spring (127) is sleeved on the sliding rod (126). The two ends of the support spring (127) are fixedly connected to the sliding rod (126) and the side plate (121) respectively.

8. A screening device for vitamin D production according to claim 1, characterized in that: A mounting plate (130) is fixedly installed on the lower mounting plate (104), and a motor (128) is fixedly installed on the mounting plate (130). The output end of the motor (128) is rotatably connected to the lower mounting plate (104), and an eccentric wheel (129) is fixedly installed on the output end of the motor (128).

Images