Screening device for powder metallurgy raw materials

Abstract

The utility model discloses a powder metallurgy raw material screening device which comprises a base and a bottom plate, three air cylinders are installed above the base, the three air cylinders are arranged in an annular array mode, the bottom plate is arranged above the base, the output ends of the three air cylinders are connected with the base through cardan shafts respectively, a bottom box is connected above the bottom plate, and the output ends of the three air cylinders are connected with the bottom box through cardan shafts respectively. The upper portion of the bottom box is connected with at least one screen, the air inlet ends and the air outlet ends of the three air cylinders are all provided with electromagnetic valves, and the electromagnetic valves are in signal connection with the PLC. The bottom plate is supported through the three air cylinders, the three air cylinders are controlled by the PLC to act in sequence, so that the screen on the bottom plate is driven to shake, raw materials are screened through the screen, the screening effect can be guaranteed, and the low-noise effect is achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of powder metallurgy raw material screening, and in particular relates to a screening device for powder metallurgy raw materials. Background Art

[0002] Powder metallurgy uses metal granular powder as raw material. After sintering and forming, it can be made into various metal raw materials and metal composite materials, which is similar to the sintering production of ceramics. In order to make the surface of the sintered metal material more uniform and of higher quality, the powder metallurgy raw materials need to be screened into particles of uniform size. Therefore, a screening device is needed.

[0003] The existing screening devices have some problems in practical application, such as:

[0004] 1. Most of the screening is achieved by driving the screen mesh to vibrate through a vibration motor, which causes a lot of noise and will cause harm to the workers in the long run;

[0005] 2. The number of screening stages is generally fixed, making adjustment inconvenient. Utility Model Content

[0006] In order to solve the problems raised in the above background technology, the utility model provides a screening device for powder metallurgy raw materials, which has the characteristics of low noise and adjustable screening number.

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a screening device for powder metallurgy raw materials, comprising a base and a bottom plate, three cylinders are installed above the base, the three cylinders are arranged in a circular array, the bottom plate is arranged above the base, the output ends of the three cylinders are respectively connected to the base through a universal shaft, a bottom box is connected above the bottom plate, at least one screen is connected above the bottom box, solenoid valves are installed on the inlet and outlet ends of the three cylinders, and the solenoid valves are connected to the PLC controller signal.

[0008] In order to screen the raw materials, the screen further comprises a screen frame, and a mesh plate is connected to the interior of the screen frame.

[0009] In order to achieve multi-stage screening, further, when two or more screens are provided, the mesh diameters of the mesh plates of the two or more screens decrease successively from top to bottom.

[0010] In order to achieve a sealed connection between the bottom box and the screen or between the screens, further, the upper edges of the bottom box and the screen are respectively provided with plug-in blocks, and the lower edges of the screen are provided with slots corresponding to the plug-in blocks.

[0011] In order to facilitate pouring out the screened raw materials in the screen and the bottom box, and to facilitate increasing or decreasing the number of screens to adjust the number of screening stages, further, the lower ends of the screen and the circumference of the bottom box are connected with a plurality of lower connecting blocks arranged in a circular array, and the upper ends of the screen and the circumference of the bottom box are connected with a plurality of upper connecting blocks arranged in a circular array. The contacting lower connecting blocks and upper connecting blocks are connected by a quick release part. The quick release part is a door buckle type quick clamp.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The utility model supports the bottom plate through three cylinders, and controls the three cylinders to move in sequence through the PLC controller, thereby driving the screen on the bottom plate to shake, and the raw materials are screened through the screen, which can not only ensure the screening effect, but also have the effect of low noise;

[0014] 2. The utility model provides plug-in blocks on the upper edges of the bottom box and the screen respectively. The lower edge of the screen is provided with slots corresponding to the plug-in blocks, and the plug-in blocks cooperate with the slots to achieve a sealed connection between the bottom box and the screen or between the screens;

[0015] 3. The utility model realizes the connection between the screens or between the screen and the bottom box through the door buckle type quick clamp, which is convenient for quick disassembly and assembly. On the one hand, it is convenient to pour out the screened raw materials in the screen and the bottom box, and on the other hand, it is convenient to increase or decrease the number of screens to adjust the number of screening stages. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0017] Figure 1 It is a schematic diagram of the structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the structure of the bottom box of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the screen of the utility model;

[0020] Figure 4 This is a schematic diagram of the structure of the connection between the screen and the bottom box of the utility model;

[0021] Figure 5 It is a partial cross-sectional structural schematic diagram of the screen of the utility model;

[0022] In the figure: 1, base; 2, cylinder; 3, universal shaft; 4, bottom plate; 5, screen; 51, screen frame; 52, mesh plate; 6, bottom box; 7, upper connecting block; 8, lower connecting block; 9, plug block; 10, slot. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] Example 1

[0025] See also Figure 1-5 The utility model provides the following technical solutions: a screening device for powder metallurgy raw materials, comprising a base 1 and a bottom plate 4, three cylinders 2 are installed above the base 1, the three cylinders 2 are arranged in a ring array, the bottom plate 4 is arranged above the base 1, the output ends of the three cylinders 2 are respectively connected to the base 1 through a universal shaft 3, a bottom box 6 is connected above the bottom plate 4, at least one screen 5 is connected above the bottom box 6, solenoid valves are installed on the air inlet and outlet ends of the three cylinders 2, and the solenoid valves are connected to the PLC controller signal.

[0026] By adopting the above technical scheme, the utility model supports the bottom plate 4 through three cylinders 2, and controls the three cylinders 2 to move in sequence through the PLC controller, thereby driving the screen 5 on the bottom plate 4 to shake, and the raw materials are screened by the screen 5, which can not only ensure the screening effect, but also has the effect of low noise.

[0027] Specifically, the screen 5 includes a screen frame 51 , and a mesh plate 52 is connected to the interior of the screen frame 51 .

[0028] By adopting the above technical solution, the raw materials are screened through the mesh plate 52.

[0029] Specifically, when two or more sieves 5 are provided, the mesh diameters of the mesh plates 52 of the two or more sieves 5 decrease sequentially from top to bottom.

[0030] By adopting the above technical solution, multi-stage screening is achieved.

[0031] Example 2

[0032] The difference between this embodiment and the first embodiment is that: specifically, the upper edges of the bottom box 6 and the screen 5 are respectively provided with inserting blocks 9 , and the lower edge of the screen 5 is provided with slots 10 corresponding to the inserting blocks 9 .

[0033] By adopting the above technical solution, the plug block 9 cooperates with the slot 10 to achieve a sealed connection between the bottom box 6 and the screen 5 or between the screens 5 .

[0034] Example 3

[0035] The difference between this embodiment and the first embodiment is that: specifically, the lower ends of the circumference of the screen 5 and the bottom box 6 are connected with a plurality of lower connection blocks 8 arranged in a circular array, and the upper ends of the circumference of the screen 5 and the bottom box 6 are connected with a plurality of upper connection blocks 7 arranged in a circular array. The lower connection blocks 8 and the upper connection blocks 7 in contact are connected by a quick release part. The quick release part is a door-buckle type quick clamp, which is purchased from the market. The lock of the door-buckle type quick clamp is installed on the upper connection block 7, and the operating end is installed on the lower connection block 8. The bottom box 6 and the bottom plate 4 are also connected by the door-buckle type quick clamp.

[0036] By adopting the above technical solution, the connection between the screens 5 or between the screen 5 and the bottom box 6 is achieved through a door-hook type quick clamp, which is convenient for quick disassembly and assembly. On the one hand, it is convenient to pour out the screened raw materials in the screen 5 and the bottom box 6, and on the other hand, it is convenient to increase or decrease the number of screens 5 to adjust the number of screening stages.

[0037] In summary, the utility model supports the bottom plate 4 through three cylinders 2, and controls the three cylinders 2 to move in sequence through the PLC controller, thereby driving the screen 5 on the bottom plate 4 to shake, and the raw materials are screened through the screen 5, which can not only ensure the screening effect, but also have the effect of low noise; the utility model has plug-in blocks 9 on the upper edges of the bottom box 6 and the screen 5. The lower edge of the screen 5 is provided with a slot 10 corresponding to the plug-in block 9, and the plug-in block 9 cooperates with the slot 10 to achieve a sealed connection between the bottom box 6 and the screen 5 or between the screens 5; the utility model realizes the connection between the screens 5 or between the screen 5 and the bottom box 6 through a door buckle type quick clamp, which is convenient for quick disassembly and assembly, on the one hand, it is convenient to pour out the screened raw materials in the screen 5 and the bottom box 6, and on the other hand, it is convenient to increase or decrease the number of screens 5 to achieve the adjustment of the number of screening levels.

[0038] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A screening device for powder metallurgy raw materials, comprising a base and a bottom plate, characterized in that: Three cylinders are installed above the base, and the three cylinders are arranged in a circular array. The bottom plate is arranged above the base, and the output ends of the three cylinders are respectively connected to the base through universal shafts. A bottom box is connected above the bottom plate, and at least one screen is connected above the bottom box. Solenoid valves are installed on the inlet and outlet ends of the three cylinders, and the solenoid valves are connected to the PLC controller signal.

2. A screening device for powder metallurgy raw materials according to claim 1, characterized in that: The screen comprises a screen frame, and a mesh plate is connected inside the screen frame.

3. A screening device for powder metallurgy raw materials according to claim 2, characterized in that: When two or more screens are provided, the mesh diameters of the screen plates of the two or more screens decrease successively from top to bottom.

4. A screening device for powder metallurgy raw materials according to claim 1, characterized in that: Insert blocks are respectively arranged on the upper edges of the bottom box and the screen.

5. A powder metallurgy raw material screening device according to claim 4, characterized in that: The lower edge of the screen is provided with a slot corresponding to the insert block.

6. A powder metallurgy raw material screening device according to claim 1, characterized in that: The lower ends of the screen and the bottom box circumference are connected with a plurality of lower connection blocks arranged in a ring array, and the upper ends of the screen and the bottom box circumference are connected with a plurality of upper connection blocks arranged in a ring array.

7. A powder metallurgy raw material screening device according to claim 6, characterized in that: The contacting lower connecting block and upper connecting block are connected via a quick-release piece.

8. A screening device for powder metallurgy raw materials according to claim 7, characterized in that: The quick-release part is a door-buckle type quick clamp.

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