Vibrating screen capable of simultaneously separating raw materials into multiple specifications and grades

Abstract

The utility model relates to a vibrating screen capable of separating raw materials into a plurality of specifications and grades at the same time, and aims to solve the problems that when the freeze-dried fruit raw materials are screened by an existing vibrating screen, the freeze-dried fruit raw materials directly collide with a screen to be separated on the screen, so that the freeze-dried fruit raw materials are easily broken, and the working efficiency is high. The freeze-dried fruit raw material screening device comprises a screening mechanism, the screening mechanism comprises a shell and a screen obliquely arranged in an inner cavity of the shell, the screen comprises a plurality of screen plates, the screen plates are sequentially connected, and the diameters of screen holes of the screen plates are sequentially increased from top to bottom; the freeze-dried fruit raw material vibration screening device has the advantages that the breakage rate of freeze-dried fruit raw materials during vibration screening is reduced, the screening quality of the freeze-dried fruit raw materials is further improved, and air flow passes through the screening holes of the screening plate, so that the screening of the freeze-dried fruit raw materials can be prevented from being affected due to the fact that the screening holes of the screening plate are blocked.

Description

TECHNICAL FIELD

[0001] The utility model relates to the freeze-dried fruit screening field, concretely is a vibrating screen that can simultaneously divide raw materials into multiple specifications. BACKGROUND

[0002] The freeze-dried fruit adopts the vacuum freeze-drying method of freeze-drying machine to freeze the moisture in the fruit in advance, then sublimes the frozen moisture in the fruit in the vacuum environment, thereby obtaining the freeze-dried fruit, in short, extracts the moisture in the fruit in the low-temperature environment, retains its original nutrition, the vibrating screen for generally producing freeze-dried fruit particles is screened by the fruit particles introduction device.

[0003] When the conventional vibrating screen screens the freeze-dried fruit raw materials, the freeze-dried fruit raw materials are directly collided with the screen during the vibration screening on the screen, which can easily cause the breakage of the freeze-dried fruit raw materials, thereby affecting the quality of the freeze-dried fruit raw material screening. UTILITY MODEL CONTENT

[0004] The utility model discloses a vibrating screen that can simultaneously divide raw materials into multiple specifications to overcome the defects of the prior art, adapt to the actual needs, and solve the technical problem that the vibrating screen currently screens the freeze-dried fruit raw materials, the freeze-dried fruit raw materials are directly collided with the screen during the vibration screening on the screen, which can easily cause the breakage of the freeze-dried fruit raw materials, thereby affecting the quality of the freeze-dried fruit raw material screening.

[0005] In order to achieve the purpose of the utility model, the utility model adopts the technical scheme that a vibrating screen that can simultaneously divide raw materials into multiple specifications is designed, which comprises:

[0006] The screening mechanism comprises a shell and a screen inclinedly arranged in the inner cavity of the shell, the screen comprises a plurality of screen plates, the plurality of screen plates are connected in sequence, the screen hole diameters of the plurality of screen plates increase in sequence from top to bottom, a feeding port is formed in one side of the top of the shell, a first discharge port is formed below the front end of the shell and communicates with the space below the screen plate, a second discharge port is formed in one end of the shell and communicates with the space above the screen plate;

[0007] The air floatation mechanism comprises a plurality of pipes arranged below the screen and a gas pump installed at the front end of the shell, the pipes are installed on the inner wall of the shell and do not contact the screen, both ends of the pipes are connected with both ends of the inner cavity of the shell, the gas outlet end of the gas pump is communicated with an air inlet pipe, a connecting pipe is communicated between the air inlet pipe and the pipes, and air outlet holes are formed in the pipes.

[0008] Preferably, the bottom end side of the screen is provided with a vibration motor, both sides of the inner cavity of the shell are provided with support plates, and the four support plates are connected with the screen through bolts and springs.

[0009] Preferably, the air outlet hole is inclined to the screen hole of the screen plate.

[0010] Preferably, the bottom of the screen is provided with a plurality of baffles, the baffles are arranged at the connection positions of two adjacent screen plates, the outer sides of the baffles are slidably sleeved with limiting frames, and the limiting frames are connected with the bottom end of the inner cavity of the shell.

[0011] Preferably, the top of the inner cavity of the shell is provided with an air pressure monitoring mechanism, and the air pressure monitoring mechanism is an air pressure sensor.

[0012] Preferably, a material guide plate is arranged on the shell below the screen.

[0013] Compared with the prior art, the beneficial effects of the utility model lie in:

[0014] The utility model discloses a combination of air pump, air outlet hole, air inlet pipe, guide pipe and screen plate, when raw materials are screened, the air pump is started to spray airflow through the air outlet hole, then the airflow is sprayed through the screen hole of the screen plate, so that the airflow is sprayed upward from the bottom of the screen plate to generate bernoulli lift to offset the weight of part of the material falling under vibration, thereby reducing the impact force between the falling material and the screen plate during the vibration screening of the material, further reducing the breakage rate during the vibration screening of the freeze-dried fruit raw material, further improving the quality of the screening of the freeze-dried fruit raw material, and the airflow passing through the screen hole of the screen plate can prevent the screen hole of the screen plate from being blocked to affect the screening of the freeze-dried fruit raw material. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole structure schematic view of the utility model;

[0016] Fig. 2 It is a whole sectional structure schematic view of the utility model;

[0017] Fig. 3 It is a whole sectional bottom view structure schematic view of the utility model.

[0018] In the drawing: 1, shell;11, feeding opening;12, first discharge port;13, second discharge port;14, screen;15, support plate;16, spring;17, vibration motor;18, screen plate;2, air pump;21, air inlet pipe;22, guide pipe;23, air outlet hole;3, limiting frame;31, baffle;4, material guide plate;5, air pressure monitoring mechanism. DETAILED DESCRIPTION

[0019] The utility model is further illustrated below in connection with the drawings and examples:

[0020] Embodiment 1: a vibrating screen capable of simultaneously separating raw materials into multiple specification grades, as shown in Figs. 1 to 3 , comprising: a screening mechanism, the screening mechanism comprising a housing 1 and a screen 14 obliquely arranged in the inner cavity of the housing 1, the screen 14 comprising a plurality of screen plates 18, the plurality of screen plates 18 being connected in sequence, the screen hole diameters of the plurality of screen plates 18 increasing in sequence from top to bottom, a feeding port 11 being formed on one side of the top of the housing 1, a first discharge port 12 being formed below the front end of the housing 1 and being in communication with the space below the screen plate 18, and a second discharge port 13 being formed at one end of the housing 1 and being in communication with the space above the screen plate 18; an air floating mechanism, the air floating mechanism comprising a plurality of conduits 22 arranged below the screen 14 and an air pump 2 installed at the front end of the housing 1, the conduits 22 being installed on the inner wall of the housing 1 and not being in contact with the screen 14, both ends of the conduit 22 being connected with the inner cavities of the housing 1, the air outlet end of the air pump 2 being communicated with an air inlet pipe 21, a connecting pipe being communicated between the air inlet pipe 21 and the conduit 22, the air inlet pipe 21 being communicated with the plurality of conduits 22 through a plurality of connecting pipes penetrating the housing 1, air outlet holes 23 being formed on the conduit 22, a vibrating motor 17 being installed on one side of the bottom end of the screen 14, support plates 15 being installed on both sides of the inner cavities of the housing 1, and springs 16 being connected between the support plates 15 and the screen 14 through bolts (the both ends of the spring 16 are installed with plate bodies, and the plate bodies are installed on the support plates 15 and the screen 14 through bolts).

[0021] In operation, the raw materials to be screened are fed into the screen 14 through the feeding port 11, and then the vibrating motor 17 is started to drive the screen 14 to vibrate, and the spring 16 is also started to drive the screen 14 to vibrate, so as to drive the raw materials to move on the screen plate 18 and screen the raw materials. Since the number of screen plates 18 is multiple, the raw materials can be simultaneously separated into multiple specification grades. While the raw materials are screened, the air pump 2 is started to spray air flow through the air outlet holes 23, and then the air flow is sprayed through the screen holes of the screen plate 18, so as to spray the air flow upward from the bottom of the screen plate 18, generate Bernoulli lift, and offset the weight of the part of the material falling under vibration, so as to reduce the impact force between the falling material and the screen plate 18 during the vibration screening of the material, thereby reducing the breakage rate of the freeze-dried fruit raw material during the vibration screening, further improving the quality of the freeze-dried fruit raw material screening, and preventing the screen holes of the screen plate 18 from being blocked by the air flow passing through the screen holes of the screen plate 18, thereby affecting the screening of the freeze-dried fruit raw material.

[0022] Specifically, as shown in Fig. 2 , the air outlet holes 23 are inclined to the screen holes of the screen plate 18, which is used to avoid the direct impact of the vertical air flow on the surface of the freeze-dried fruit raw material, reduce the local high-pressure area of the freeze-dried fruit raw material, and make the air floating more uniform.

[0023] Further, as shown in Fig. 3The bottom of the screen 14 is provided with a plurality of baffles 31 arranged at the joint of two adjacent screen plates 18, and the outer side of the plurality of baffles 31 is slidably sleeved with a limiting frame 3 connected with the bottom end of the inner cavity of the shell 1.

[0024] It is worth noting that, referring to Fig. 3 The top of the inner cavity of the shell 1 is provided with an air pressure monitoring mechanism 5, which is an air pressure sensor, and is connected with the air pump 2 after processing signals by a control processor in the prior art, so that the air pressure of each screening area can be monitored in real time, and then the air pressure of the air pump 2 is automatically adjusted according to the air pressure, so as to avoid that the air pressure is too large or too small to affect the quality of the freeze-dried fruit air floatation material.

[0025] It is worth noting that, referring to Fig. 2 The shell 1 below the screen 14 is provided with a material guide plate 4, so that the multiple specifications of the separated raw materials can be slid through the first discharge port 12 from the shell 1.

[0026] In addition, the components of the utility model are all general standard components or components known by those skilled in the art, the structure and principle of which can be known by the technical personnel through technical manual or through conventional experimental method, and the technical personnel in the art can realize it, and it is needless to say, and the content protected by the utility model does not involve the improvement of internal structure and method.

[0027] The utility model discloses an embodiment discloses the preferred embodiment, but is not limited to this, and the ordinary skilled in the art, easily understands the spirit of the utility model according to the above-mentioned embodiment, and makes different extension and change, but as long as not departing from the spirit of the utility model, is in the protection scope of the utility model.

Claims

1. A vibrating screen capable of simultaneously sizing a feed material into multiple size fractions, characterized by, The utility model relates to a screening mechanism, air floating mechanism and air pressure monitoring mechanism, which are combined to realize the screening of the material. The air floating mechanism comprises a plurality of guide pipes (22) arranged below the screen (14) and a gas pump (2) installed at the front end of the shell (1), the guide pipes (22) are installed on the inner wall of the shell (1) and do not contact the screen (14), both ends of the guide pipes (22) are connected with the inner cavities of the shell (1), the gas outlet end of the gas pump (2) is communicated with an air inlet pipe (21), a connecting pipe is arranged between the air inlet pipe (21) and the guide pipes (22), and air outlet holes (23) are arranged on the guide pipes (22). The bottom end of the screen (14) is provided with a vibrating motor (17) on one side, and the inner cavities of the shell (1) are provided with support plates (15) on both sides of the two ends, and the four support plates (15) are connected with the screen (14) through springs (16) by bolts.

2. The vibrating screen capable of simultaneously classifying raw materials into a plurality of specification levels according to claim 1, wherein The air outlet holes (23) are inclined to the screen holes of the screen plates (18).

3. The vibrating screen capable of simultaneously classifying raw materials into a plurality of specification levels according to claim 1, wherein The bottom of the screen (14) is provided with a plurality of baffle plates (31), the baffle plates (31) are arranged at the connection positions of two adjacent screen plates (18), the outer sides of the baffle plates (31) are slidably sleeved with limiting frames (3), and the limiting frames (3) are connected with the bottom end of the inner cavity of the shell (1).

4. The vibrating screen capable of simultaneously classifying raw materials into a plurality of specification levels according to claim 1, wherein The inner cavity of the shell (1) is provided with an air pressure monitoring mechanism (5) at the top, and the air pressure monitoring mechanism (5) is an air pressure sensor.

5. The vibrating screen capable of simultaneously classifying raw material into a plurality of size grades according to claim 1, wherein, The shell (1) below the screen (14) is provided with a guide plate (4).

6. The vibrating screen capable of simultaneously classifying a raw material into a plurality of specification levels according to claim 1, wherein ​

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