Rotary screen

Abstract

The utility model discloses a whirling screen which comprises a shell, a plurality of sets of annular limiting rails are installed on the inner wall of an inner cavity of the shell, the annular limiting rails are arranged at intervals in the vertical direction, a metal net bin is installed on each annular limiting rail in a sliding mode, and each metal net bin is connected with a material guiding pipe. A driving part is installed on the shell, a telescopic rod is arranged on the driving part, a discharging pipe is vertically connected to the tail end of the telescopic rod, the driving part is used for controlling the telescopic rod to stretch out and draw back and controlling the discharging pipe to rotate, and the discharging pipe penetrates through the center of each metal net bin and is provided with a part extending out of the shell; a plurality of sets of through holes are formed in the discharging pipe, each set of through holes corresponds to one metal net bin, materials can be conveniently guided into all the metal net bins through the material guiding pipe, the function of distributing the materials is achieved, the amount of the screened materials is increased, and the screening efficiency can be remarkably improved.

Description

Technical Field

[0001] The utility model relates to the technical field of gyratory screens, in particular to a gyratory screen. Background Art

[0002] The gyratory screen is also called a large-scale double screen. The vibration force generated by its driving device is an inertial force that changes in direction around a fixed axis in a certain regular manner. Its essence is the reciprocating inertial force formed by the rotation of the eccentric wheel around the fixed axis. According to the structural characteristics and working principle of the gyratory screen, its screen surface is generally arranged horizontally or slightly inclined. The working principle of the gyratory screen is as follows: after the screen machine is started, the screen machine shaking body, that is, the screen box, reciprocates back and forth under the action of inertial force, and the screen box drives the screen surface to shake periodically, so that the material on the screen surface moves in a directional jumping manner with the screen box. During this period, the material smaller than the screen hole diameter passes through the screen hole and falls to the lower layer, becoming the screen under the screen. The material larger than the screen hole diameter is discharged from the discharge port after continuous tumbling and jumping motion, and finally the screening work is completed. The existing gyratory screen has a small one-time screening amount, takes a long time, and the screening efficiency is not high. Utility Model Content

[0003] In order to solve the technical problems existing in the background technology, the utility model proposes a gyratory screen.

[0004] In the utility model, a gyratory screen is proposed, comprising a shell, wherein the inner wall of the inner cavity of the shell is provided with a plurality of groups of annular limit rails, the plurality of groups of annular limit rails are arranged at intervals in the vertical direction, a metal mesh bin is slidably installed on each group of the annular limit rails, and a material guide pipe is connected to each group of the metal mesh bins;

[0005] A driving member is installed on the shell, and a telescopic rod is provided on the driving member. A feeding tube is vertically connected to the end of the telescopic rod. The driving member is used to control the extension and retraction of the telescopic rod and the rotation of the feeding tube. The feeding tube runs through the center of each group of the metal mesh bins and has a portion extending out of the shell. A plurality of through holes are provided on the feeding tube, and each group of through holes corresponds to a metal mesh bin;

[0006] When the telescopic rod is retracted, the through hole of the feeding pipe is located outside the corresponding metal mesh bin;

[0007] When the telescopic rod is extended, the through hole of the feeding pipe is located in the inner cavity of the corresponding metal mesh bin;

[0008] When the feeding tube rotates, the feeding tube can drive each metal mesh bin to rotate on the corresponding annular limit rail.

[0009] Preferably, the metal mesh bins are all disc-shaped, and the bottom side of each group of the metal mesh bins is a downwardly protruding cone.

[0010] Preferably, a lower hopper is installed at the bottom of the shell.

[0011] Preferably, a plurality of groups of supporting feet are installed at the bottom of the lower hopper.

[0012] Preferably, a plurality of groups of feed hoppers are installed on the outer shell, and the plurality of groups of feed hoppers can be respectively connected with corresponding material guide pipes.

[0013] Preferably, the feed pipe is a square pipe.

[0014] Materials are introduced into each metal mesh bin through each material guide pipe to disperse the materials. The longitudinally distributed metal mesh bins can reduce the occupied space. During the screening process, the driving part controls the telescopic rod to retract. The through hole of the feeding pipe is located outside the metal mesh bin. The driving part drives the feeding pipe to rotate, thereby driving the metal mesh bin to rotate. Under the action of centrifugal force, small particles of materials will fall out of the mesh of the metal mesh bin, and large particles of materials will remain inside the metal mesh bin.

[0015] The material exported from the metal mesh bin will fall to the bottom of the inner cavity of the shell and be discharged through the discharge hopper. At this time, the driving part controls the telescopic rod to extend, and the through hole of the discharge pipe is located in the inner cavity of the metal mesh bin. The material remaining in the metal mesh bin enters the discharge pipe through the through hole and is discharged, which plays a role of screening.

[0016] The material guide pipe facilitates the introduction of materials into each metal mesh bin, plays the function of material diversion, increases the amount of screened materials, and can significantly improve the screening efficiency.

[0017] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure of the telescopic rod of the utility model when it is contracted;

[0019] Figure 2 It is a structural schematic diagram of the utility model when the telescopic rod is extended.

[0020] Figure 3 It is a schematic diagram of the local structure of the utility model.

[0021] Explanation of the numbers in the figure: 1. Shell; 101. Driving member; 102. Telescopic rod; 103. Annular limit rail; 104. Support foot; 105. Feed hopper; 2. Feed pipe; 201. Through hole; 3. Metal mesh bin; 301. Material guide pipe; 302. Feed hopper. DETAILED DESCRIPTION

[0022] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar symbols throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0023] like Figure 1-Figure 3 A gyratory screen shown in the figure comprises a shell 1, wherein the inner wall of the inner cavity of the shell 1 is provided with a plurality of groups of annular limiting rails 103, wherein the plurality of groups of annular limiting rails 103 are arranged at intervals in the vertical direction, and a metal mesh bin 3 is slidably mounted on each group of the annular limiting rails 103, and a material guide pipe 301 is connected to each group of the metal mesh bin 3;

[0024] The housing 1 is provided with a driving member 101, on which a telescopic rod 102 is disposed, and a feeding tube 2 is vertically connected to the end of the telescopic rod 102. The driving member 101 is used to control the extension and retraction of the telescopic rod 102 and the rotation of the feeding tube 2. The feeding tube 2 passes through the center of each group of the metal mesh bins 3 and has a portion extending out of the housing 1. The feeding tube 2 is provided with a plurality of groups of through holes 201, and each group of the through holes 201 corresponds to a metal mesh bin 3.

[0025] When the telescopic rod 102 is retracted, the through hole 201 of the feeding pipe 2 is located outside the corresponding metal mesh bin 3;

[0026] When the telescopic rod 102 is extended, the through hole 201 of the feeding pipe 2 is located in the inner cavity of the corresponding metal mesh bin 3;

[0027] When the feeding tube 2 rotates, the feeding tube 2 can drive each metal mesh bin 3 to rotate on the corresponding annular limiting rail 103 .

[0028] Materials are introduced into each metal mesh bin 3 through each material guide pipe 301 to disperse the materials. The longitudinally distributed metal mesh bin 3 can reduce the occupied space. During the screening process, the driving member 101 controls the telescopic rod 102 to contract, and the through hole 201 of the feeding pipe 2 is located outside the metal mesh bin 3. The driving member 101 drives the feeding pipe 2 to rotate, thereby driving the metal mesh bin 3 to rotate. Under the action of centrifugal force, small particles of materials will fall out of the mesh of the metal mesh bin 3, and large particles of materials will remain inside the metal mesh bin 3.

[0029] The material discharged from the metal mesh bin 3 will fall to the bottom of the inner cavity of the outer shell 1 and be discharged through the discharge hopper 105. At this time, the driving member 101 controls the telescopic rod 102 to extend, and the through hole 201 of the discharge pipe 2 is located in the inner cavity of the metal mesh bin 3. The material remaining in the metal mesh bin 3 enters the discharge pipe 2 through the through hole 201 and is discharged, thereby playing a screening role.

[0030] The metal mesh bins 3 are all disc-shaped, and the bottom side of each group of the metal mesh bins 3 is a downwardly protruding cone. The disc-shaped can slide more smoothly on the annular limit rail 103, and the conical design at the bottom can play a role in guiding the material into the discharge pipe 2.

[0031] A lower hopper 105 is installed at the bottom of the housing 1 for discharging materials.

[0032] A plurality of support legs 104 are installed at the bottom of the lower hopper 105 to provide support and stability, and provide space for accommodating the lower hopper 105 and the lower tube 2 .

[0033] A plurality of feed hoppers 302 are installed on the outer shell 1, and the plurality of feed hoppers 302 can be respectively connected with the corresponding material guide pipes 301, so as to facilitate the introduction of materials into each metal mesh bin 3, play the function of material diversion, and can significantly improve the screening efficiency.

[0034] The feed tube 2 is a square tube, which can be more firmly connected with each metal mesh bin 3, so that the feed tube 2 can drive the metal mesh bin 3 to rotate. It should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply 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 utility model.

[0035] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present utility model, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0038] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A gyratory screen, comprising a housing (1), It is characterized in that The inner wall of the inner cavity of the shell (1) is equipped with multiple groups of annular limit rails (103), which are arranged at intervals in the vertical direction, and each group of the annular limit rails (103) is slidably equipped with a metal mesh bin (3), and each group of the metal mesh bin (3) is connected to a material guide pipe (301); The housing (1) is provided with a driving member (101), a telescopic rod (102) is provided on the driving member (101), a distal end of the telescopic rod (102) is vertically connected to a feeding tube (2), the driving member (101) is used to control the telescopic rod (102) to extend and retract and the feeding tube (2) to rotate, the feeding tube (2) passes through the center of each group of the metal mesh bins (3) and has a portion extending out of the housing (1), the feeding tube (2) is provided with a plurality of groups of through holes (201), and each group of the through holes (201) corresponds to a metal mesh bin (3); When the telescopic rod (102) is retracted, the through hole (201) of the feeding pipe is located outside the corresponding metal mesh bin (3); When the telescopic rod (102) is extended, the through hole (201) of the feed pipe is located in the inner cavity of the corresponding metal mesh bin (3); When the feeding tube (2) rotates, the feeding tube (2) can drive each metal mesh bin (3) to rotate on the corresponding annular limiting rail (103).

2. A gyratory screen according to claim 1, It is characterized in that The metal mesh bins (3) are all disc-shaped, and the bottom side of each group of the metal mesh bins (3) is a cone-shaped body protruding downwards.

3. A gyratory screen according to claim 1, It is characterized in that A lower hopper (105) is installed at the bottom of the housing (1).

4. A gyratory screen according to claim 3, It is characterized in that The bottom of the lower hopper (105) is equipped with multiple groups of supporting legs (104).

5. A gyratory screen according to claim 1, It is characterized in that A plurality of groups of feed hoppers (302) are installed on the housing (1), and the plurality of groups of feed hoppers (302) can be connected to each group of material guide pipes (301) respectively.

6. A gyratory screen according to claim 1, It is characterized in that The feed tube (2) is a square tube.

Images