Raw material screening device

Abstract

The utility model belongs to the technical field of screening equipment, and particularly relates to a raw material screening device which comprises a screening mechanism, a driving mechanism and a base, a pair of connecting rods are arranged between screening plates in a bilateral symmetry mode and hinged, the middle end of each connecting rod is hinged to a screening frame, and screening holes are formed in each screening plate. The apertures of sieve holes in each layer of sieve plate are gradually reduced downwards, and a material crushing sliding plate which is inclined towards one side is fixedly arranged below the sieve plate at the bottommost layer; a driving mechanism enabling the screening mechanism to vibrate is arranged at the bottom of the screen frame, and an elastic component is arranged between the screen frame and the base for connection. Compared with the prior art, the screening device can achieve left-right screening besides up-down vibration screening, the connecting rods capable of transmitting power are arranged between the layers, the adjacent layer can be driven to conduct left-right screening in the opposite direction, power attenuation is reduced, and the screening efficiency and the screening effect are improved. In addition, the sieve plate also has a function of protecting the raw materials, so that the raw material loss during screening can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of screening equipment, in particular to a raw material screening device. Background Art

[0002] Sea cucumber products need to screen the raw materials according to size before processing, so that the final products can be reasonably priced according to the different sizes of sea cucumbers in the future, and large-sized high-quality sea cucumbers are sold at high prices as high-end products, while small-sized sea cucumbers are used to occupy the market at low prices, ultimately maximizing profits. At present, for the screening of raw materials such as sea cucumber freeze-drying, a screening device is often used. In the prior art, a sea cucumber screening device with application number CN201922461508.2 is disclosed, which discloses a screening device for screening sea cucumbers by adopting electric drive, which changes the traditional manual screening method of sea cucumbers, and can reduce the damage caused to sea cucumbers during the manual screening process of sea cucumbers. Although the screening device can play a certain beneficial effect, there are still defects in the structural design, such as the three-layer screening component power comes from the vibration motor at the bottom, the vibration force is weakened from the bottom to the top, and the vibration mode is up and down vibration, which is easy to jam, and the screening is not thorough, and manual re-inspection is required. In addition, the sieve plate of the screening component lacks protection for sea cucumbers, and there will be loss during use, causing losses. Therefore, if a raw material screening device with a reasonable structure, better screening effect and capable of protecting sea cucumbers can be designed, there is a certain market demand. Summary of the invention

[0003] In view of the above-mentioned deficiencies in the prior art, the utility model provides a raw material screening device which has a reasonable structure, better screening effect and can protect sea cucumbers, so as to solve the above-mentioned problems.

[0004] The utility model discloses a raw material screening device, comprising a screening mechanism, a driving mechanism and a base, wherein the screening mechanism comprises a screen plate, a screen frame, a connecting rod and an elastic component, wherein a plurality of layers of screen plates are arranged at equal intervals on the screen frame, wherein a pair of connecting rods are symmetrically arranged and hinged between the screen plates, wherein the middle end of each connecting rod is hingedly arranged on the screen frame, wherein each layer of the screen plates is provided with screen holes, and the diameter of the screen holes on each layer of the screen plates gradually decreases downward, and a crushing material slide plate inclined to one side is fixedly arranged below the bottom layer of the screen plate; wherein the screen frame is provided with a driving mechanism at the bottom, wherein the driving mechanism comprises a vibration motor, an eccentric wheel and a pull rod, wherein the rotating shaft of the vibration motor extends from the inside and is provided with an eccentric wheel, wherein the two ends of the pull rod are respectively hinged to the crushing material slide plate and the eccentric wheel, and an elastic component is arranged between the screen frame and the base for connection.

[0005] Furthermore, the sieve plate comprises a frame and a sieve hole plate, and a locking portion is provided between the frame and the sieve hole plate.

[0006] Preferably, the sieve plate is a polytetrafluoroethylene plate.

[0007] Furthermore, the top of each sieve hole is rounded.

[0008] Furthermore, the left and right ends of the sieve plate are inclined upward, and enclosure plates are provided at the front and rear.

[0009] Furthermore, baffles are provided at the front and rear of the crushing slide plate.

[0010] Furthermore, the elastic component is a spring, the base is provided with a plurality of symmetrical circular holes, the bottom of the screen frame is provided with cylinders correspondingly inserted into the circular holes, and the cylinders are sleeved with springs.

[0011] Compared with the existing technology, this screening device can not only vibrate up and down for screening, but also screen left and right. There are connecting rods between the layers that can transmit power, which can drive the adjacent layer to achieve left and right screening in the opposite direction, reduce power attenuation, improve screening efficiency and screening effect. In addition, the screen plate also protects the raw materials, which can effectively reduce the loss of raw materials during screening and reduce losses. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0013] Figure 2 It is a front view of the utility model;

[0014] Figure 3 This is a front cross-sectional view of the sieve plate.

[0015] In the figure: base 1, driving mechanism 2, vibration motor 201, eccentric wheel 202, pull rod 203, sieve plate 4, sieve hole 401, frame 402, sieve hole plate 403, locking part 404, enclosure 405, sieve frame 5, cylinder 501, connecting rod 6, elastic component 7, crushing slide plate 8, baffle 801. DETAILED DESCRIPTION

[0016] In order to better understand the present invention, Figures 1 to 3 The implementation modes of the present utility model will be explained in detail.

[0017] It should be noted that the directions "front, back, left, right, up, down" mentioned in the text are all based on Figure 1 The directions of “front, back, left, right, up, and down” are used as the basis.

[0018] See also Figures 1 to 3 The utility model provides a raw material screening device, comprising a screen base 1, a driving mechanism 2 and a screening mechanism. The screening mechanism comprises a screen plate 4, a screen frame 5, a connecting rod 6 and an elastic component 7. The screen frame 5 is provided with a plurality of screen plates 4 at equal intervals, such as Figure 1 and Figure 2 As shown in , the sieve plate 4 is provided with three layers, the first layer is used as the primary screening layer, the second layer is used as the fine screening layer, and the third layer is used as the impurity screening layer. A certain layer height (such as 25 cm) is left between the layers to facilitate the subsequent removal of the screened sea cucumbers. Two mutually parallel connecting rods 6 are hinged between the upper and lower adjacent sieve plates 4, and connecting rods 6 are provided on both the front and rear sides of the sieve plate 4. The symmetrical ends of the upper and lower connecting rods 6 are hinged with the middle sieve plate 4, so that the upper and lower connecting rods 6 form a straight line.

[0019] The middle end of each connecting rod 6 is hingedly arranged on the screen frame 5, and each layer of the screen plate 4 is provided with a screen hole 401, and the aperture of the screen holes 401 of several layers of screen plates 4 is gradually reduced from top to bottom, such as the screen hole 401 of the first primary screening layer is 6 cm, the screen hole 401 of the second fine screening layer is 4 cm, and the screen hole 401 of the third impurity screening layer is 2 cm, which is used to screen the raw materials layer by layer. A crushing slide plate 8 tilted to the left (or right) is fixedly arranged below the bottom screen plate 4, and baffles 801 are arranged on the front and rear sides of the crushing slide plate 8, and the crushing slide plate 8 is used to guide the crushed slag and impurities from the raw materials to the left (or right) side of the screening device.

[0020] The screen frame 5 is provided with a driving mechanism 2 at the bottom, and the driving mechanism 2 includes a vibration motor 201, an eccentric wheel 202 and a pull rod 203. The rotating shaft of the vibration motor 201 extends from the inside and is provided with an eccentric wheel 202. The two ends of the pull rod 203 are respectively hinged to the bottom of the crushing slide plate 8 and the eccentric wheel 202. The elastic component 7 is a spring. The base 1 is provided with a plurality of symmetrical circular holes. The bottom of the screen frame 5 is provided with a cylinder 501 corresponding to the circular hole. The cylinder 501 is sleeved with a spring. The entire screening mechanism is supported on the base 1 by the elastic force of the spring, and the elastic connection between the entire screening mechanism and the base 1 is realized at the same time, so that when the vibration motor 201 vibrates, the entire screening mechanism can vibrate up and down.

[0021] Taking into account that the sizes of sea cucumbers at different stages are different, the intensity of screening for quality should also be different. Therefore, the size of the sieve hole 401 of the sieve plate 4 is designed to be an adjustable structure. Specifically, the sieve plate 4 includes a frame 402 and a sieve hole plate 403. The sieve hole 401 is arranged on the sieve hole plate 403. A locking portion 404 (bolt) is provided between the frame 402 and the sieve hole plate 403. The sieve hole plate 403 of different specifications (sieve hole size) on the frame 402 can be replaced by loosening and tightening the bolts.

[0022] In order to prevent the sea cucumbers from being damaged by the sieve holes 401 on the sieve plate 4 during the vibration screening process, the top of each sieve hole 401 is rounded, and the sieve plate 403 is made of polytetrafluoroethylene plate.

[0023] In order to make the raw materials gather at the middle sieve hole 401 during screening and improve the screening efficiency, the left and right ends of the sieve plate 4 are tilted upward, and the front and rear are provided with enclosure plates 405. Figure 1 and Figure 2 As shown in the figure, after the sea cucumbers are screened from the top sieve plate 4 to the bottom sieve plate 4, the number of sea cucumbers that are screened and reach the next layer will decrease layer by layer. Therefore, the upwardly inclined heights of the left and right ends of each layer of the sieve plate 4 are getting lower and lower. Similarly, the height of the enclosure 405 is also getting lower and lower, so as to facilitate the subsequent collection of the screened sea cucumbers.

[0024] The usage and principle of the utility model are as follows: First, the sea cucumber raw materials to be screened are placed on the topmost sieve plate 4. Then, the vibration motor 201 works, and the entire screening mechanism is driven to vibrate by its own vibration. At the same time, the eccentric wheel 202 on the rotating shaft of the vibration motor 201 rotates, and the bottommost sieve plate 4 hinged thereto is pulled by the pull rod 203, so that the sieve plate 4 swings left and right around the hinge point where the connecting rod 6 and the sieve frame 5 are located, so that the sieve plate 4 can achieve motion screening in four directions, up, down, left and right. Since the top of the connecting rod 6 where the bottommost sieve plate 4 is located is also connected to the second sieve plate 4, and the second sieve plate 4 is also connected to the first sieve plate 4 through the connecting rod 6 of the upper layer, when the bottommost sieve plate 4 swings left and right, the upper two layers of sieve plates will also make opposite swinging movements with the lower layer of sieve plates, so that all sieve plates 4 can be screened simultaneously. Finally, the sea cucumber raw materials are screened layer by layer from the topmost screen plate 4, the largest sea cucumbers are left on the topmost layer, the second largest ones are left on the second layer, the smallest ones are left on the bottom layer, and the fine debris and impurities pass through the bottom layer and fall onto the debris slide plate 8 and slide to one side. The screened sea cucumbers are collected from both ends of the screen plate 4 using a scraper (a scraper with multiple layers of bristles, or a scraper made of a PTFE plate), and the sea cucumbers in the middle part are scraped to both sides by the scraper with an extended rod before being collected.

[0025] In the description of the present utility model, it should be understood that the terms "longitudinal", "lateral", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In the description of the present utility model, unless otherwise specified and limited, it should be noted that the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a mechanical connection or an electrical connection, or it can be the internal communication of two elements, it can be a direct connection, or it can be an indirect connection through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A raw material screening device, comprising a base (1), a driving mechanism (2) and a screening mechanism, characterized in that: The screening mechanism comprises a screen plate (4), a screen frame (5), a connecting rod (6) and an elastic component (7); a plurality of layers of screen plates (4) are arranged at equal intervals on the screen frame (5); two mutually parallel connecting rods (6) are hinged between two adjacent screen plates (4) above and below; the middle end of each connecting rod (6) is hingedly arranged on the screen frame (5); a screen hole (401) is arranged on each layer of the screen plates (4); and the apertures of the screen holes (401) of the plurality of layers of the screen plates (4) gradually decrease from top to bottom. Below the bottom layer of the screen plate (4), the screen holes (401) are arranged at a plurality of layers of the screen plates (4). A crushing slide plate (8) tilted to one side is fixedly arranged; the screen frame (5) is provided with a driving mechanism (2) at the bottom, the driving mechanism (2) comprises a vibration motor (201), an eccentric wheel (202) and a pull rod (203); the rotating shaft of the vibration motor (201) extends from the inside and is provided with an eccentric wheel (202); the two ends of the pull rod (203) are respectively hinged to the crushing slide plate (8) and the eccentric wheel (202); an elastic component (7) is provided between the screen frame (5) and the base (1) for connection.

2. A raw material screening device as claimed in claim 1, characterized in that: The sieve plate (4) comprises a frame (402) and a sieve hole plate (403), the sieve holes (401) are arranged on the sieve hole plate (403), and a locking portion (404) is arranged between the frame (402) and the sieve hole plate (403) for connection.

3. A raw material screening device as claimed in claim 2, characterized in that: The sieve plate (403) is a polytetrafluoroethylene plate.

4. A raw material screening device as claimed in claim 1, characterized in that: The top of each of the sieve holes (401) is rounded.

5. A raw material screening device as claimed in claim 1, characterized in that: The left and right ends of the sieve plate (4) are inclined upward, and enclosure plates (405) are provided at the front and rear.

6. A raw material screening device as claimed in claim 1, characterized in that: Baffles (801) are provided at the front and rear of the crushing slide plate (8).

7. A raw material screening device as claimed in claim 1, characterized in that: The elastic component (7) is a spring. The base (1) is provided with a plurality of symmetrical circular holes. The bottom of the sieve frame (5) is provided with a cylinder (501) corresponding to the circular holes. The cylinder (501) is sleeved with a spring.

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