Screening equipment for metal micro powder

Abstract

The utility model discloses metal micro powder screening equipment which comprises a main body, a screening cavity is formed in the main body, a screening seat is arranged in the screening cavity, a first screening net is arranged in the screening seat, a discharging cavity is formed in the lower end of the screening cavity, the screening cavity is communicated with the discharging cavity, and the metal micro powder screening equipment further comprises a transmission cavity. The transmission cavity is formed in one side of the screening cavity, a reciprocating lead screw is rotationally arranged on the upper side of the interior of the transmission cavity, a moving block is in threaded connection with the exterior of the reciprocating lead screw, a connecting rod is welded to one side of the moving block, one end of the connecting rod penetrates through and extends into the screening cavity, and the connecting rod is connected with the screening cavity; a guide rod is welded to the upper portion of the reciprocating lead screw and penetrates through the moving block, and the guide rod is in sliding fit with the moving block. According to the screening equipment for the metal micro powder, dissipation of the metal micro powder can be avoided, the metal micro powder is effectively prevented from polluting the working environment, and the body health of workers is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of metal micropowders, in particular to screening equipment for metal micropowders. Background Art

[0002] Metal micropowder is a metal powder with a specific particle size range, which is between micrometers and even nanometers. It represents a form of metal particles at a fine scale and exhibits unique physical and chemical properties. Metal micropowder can be divided into different categories according to its source and properties, such as carbonyl metal micropowder and magnetic metal micropowder. Metal micropowder can be accurately classified into different particle size grades through screening equipment to meet the particle size requirements of different applications.

[0003] The existing Chinese patent with announcement number CN216297044U discloses a scaly metal powder grading device, including a shell, on which a feed port, a discharge port and a support leg are provided, a fixed frame is provided inside the shell, a guide rod slidably connected to both sides of the fixed frame is provided inside the shell, a filter screen is slidably connected inside the fixed frame, a drive assembly is provided on the shell, a material blocking assembly and a transmission assembly are provided inside the shell, and a moving assembly is provided at the lower end of each of the support legs.

[0004] Although the above scheme can prevent materials from accumulating on the filter for a long time, causing the filter to be blocked and affecting the filtering effect, the metal micropowder is very easy to suspend and diffuse in the air due to its extremely small particle size. The feed inlet of the device lacks dust collection measures, resulting in a large amount of metal micropowder escaping into the working environment during screening. After the metal micropowder is inhaled by the staff, it may be deposited in the respiratory tract and lungs. Long-term accumulation may lead to respiratory diseases such as pneumoconiosis, which seriously endangers the health of the staff. Therefore, it does not meet the existing needs. In this regard, we propose a screening equipment for metal micropowder. Utility Model Content

[0005] The utility model aims to provide a metal micropowder screening device to solve the problem that the metal micropowder screening device proposed in the above background technology lacks effective dust suction during screening, resulting in the dispersion of metal micropowder and affecting the health of workers.

[0006] To achieve the above object, the utility model provides the following technical solution: a metal powder screening device, comprising a main body, a screening cavity is provided inside the main body, a screening seat is provided inside the screening cavity, a first screening net is provided inside the screening seat, a discharge cavity is provided at the lower end of the screening cavity, and the screening cavity is communicated with the discharge cavity;

[0007] It also includes a transmission chamber, which is opened on one side of the screening chamber, a reciprocating screw is rotatably arranged on the upper side of the transmission chamber, the external thread of the reciprocating screw is connected to a moving block, a connecting rod is welded on one side of the moving block, one end of the connecting rod passes through and extends to the inside of the screening chamber, and the connecting rod is connected to the screening chamber, a guide rod is welded on the top of the reciprocating screw, the guide rod passes through the moving block, and the guide rod and the moving block are slidably matched;

[0008] It also includes a collecting chamber, which is opened on the other side of the screening chamber, an annular air suction chamber is opened at the upper end of the screening chamber, an air suction machine is arranged below the collecting chamber, and the collecting chamber is connected to the annular air suction chamber and the air suction machine through a connecting pipe;

[0009] It also includes a second rotating shaft, which is rotatably arranged on the lower side of the transmission chamber, one end of the second rotating shaft passes through and extends to the inside of the discharge chamber, and the second rotating shaft is rotatably connected to the discharge chamber, and a spiral conveying blade is welded on the outer wall of one end of the second rotating shaft located inside the discharge chamber.

[0010] Preferably, a motor is provided on one side of the transmission cavity, a first rotating shaft is provided at an output end of the motor via a coupling, and the first rotating shaft is fixed to the reciprocating screw by welding.

[0011] Preferably, the first rotating shaft is connected to the second rotating shaft at one end located inside the transmission cavity via a transmission belt.

[0012] Preferably, electromagnets are installed on both sides of the collecting chamber, and a second screening net is provided on the lower side of the collecting chamber.

[0013] Preferably, elastic fabrics are provided at the upper and lower ends of the screening seat, and the other ends of the elastic fabrics are connected to the interior of the screening cavity.

[0014] Preferably, a polypropylene film is adhered and fixed to the inner wall of the discharge cavity.

[0015] Preferably, a first sealing door is movably mounted on the upper end of the main body, and a second sealing door is movably mounted on one side of the front end of the main body.

[0016] Compared with the prior art, the beneficial effects of the utility model are:

[0017] 1. The utility model opens an annular suction chamber at the upper end of the screening chamber, and opens a collecting chamber on one side of the screening chamber. When screening is performed, the suction machine is started, and the second sealing door can ensure the airtightness of the collecting chamber. After the suction machine is started, negative pressure will be present in the collecting chamber, and suction will be generated in the annular suction chamber through the connection of the connecting pipe. When metal micropowder escapes from the upper end, it will be sucked into the annular suction chamber and eventually enter the inside of the collecting chamber. By setting a second screening net with a smaller aperture, metal micropowder can be prevented from entering the suction machine, and by starting the electromagnet, floating metal micropowder can be adsorbed to prevent the metal micropowder from escaping when taken out, thereby effectively avoiding pollution of the working environment and ensuring the health of the staff.

[0018] 2. The utility model provides elastic fabrics at the upper and lower ends of the screening seat. The elastic fabrics can prevent metal powder from escaping into the transmission cavity during screening, thereby avoiding affecting normal work and reducing the risk of equipment failure caused by accumulation of metal powder. During the screening process, the screening seat will produce a certain vibration, and the elastic fabric can freely expand and contract with the vibration of the screening seat, thereby ensuring the screening effect and helping the powder to pass through the sieve holes better.

[0019] 3. The utility model provides a discharge chamber below the screening chamber. When the motor is started to rotate the reciprocating screw, the second rotating shaft drives the spiral conveying blades to rotate synchronously under the transmission of the transmission belt, so that qualified metal micropowders can be spirally conveyed to avoid clogging of the metal micropowders. In addition, a polypropylene film is provided on the inner wall of the screening chamber, and its surface smoothness can effectively reduce the adhesion of metal micropowders, which can effectively reduce the adhesion and clogging of metal micropowders on the inner wall of the discharge chamber, thereby improving the effect of discharge and conveying. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front view schematic diagram of the internal structure of the utility model;

[0021] Figure 2 It is a front view schematic diagram of the overall structure of the utility model;

[0022] Figure 3 It is a side view schematic diagram of the internal structure of the transmission chamber of the utility model;

[0023] Figure 4 This is a schematic diagram of the three-dimensional structure of the screening seat of the utility model;

[0024] Figure 5 For the utility model Figure 1 A partial enlarged view of area A.

[0025] In the figure: 1. main body; 2. screening chamber; 3. screening seat; 4. first screening net; 5. elastic cloth; 6. transmission chamber; 7. reciprocating screw; 8. guide rod; 9. moving block; 10. connecting rod; 11. first rotating shaft; 12. motor; 13. transmission belt; 14. second rotating shaft; 15. spiral conveying blade; 16. discharging chamber; 17. polypropylene film; 18. annular suction chamber; 19. collecting chamber; 20. suction machine; 21. connecting pipe; 22. electromagnet; 23. second screening net; 24. first sealing door; 25. second sealing door. DETAILED DESCRIPTION

[0026] 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.

[0027] See also Figure 1-5 The utility model provides a technical solution: a metal powder screening device, comprising a main body 1, a screening chamber 2 is provided inside the main body 1, a screening seat 3 is provided inside the screening chamber 2, a first screening net 4 is provided inside the screening seat 3, a discharge chamber 16 is provided at the lower end of the screening chamber 2, and the screening chamber 2 is communicated with the discharge chamber 16;

[0028] It also includes a transmission chamber 6, which is opened on one side of the screening chamber 2, and a reciprocating screw 7 is rotatably provided on the upper side of the transmission chamber 6, and a moving block 9 is connected to the external thread of the reciprocating screw 7, and a connecting rod 10 is welded to one side of the moving block 9, and one end of the connecting rod 10 penetrates and extends to the inside of the screening chamber 2, and the connecting rod 10 is connected to the screening chamber 2, and a guide rod 8 is welded above the reciprocating screw 7, and the guide rod 8 penetrates the moving block 9, and the guide rod 8 and the moving block 9 are slidably matched;

[0029] It also includes a collecting chamber 19, which is opened on the other side of the screening chamber 2. The upper end of the screening chamber 2 is provided with an annular suction chamber 18, and an aspirator 20 is provided below the collecting chamber 19. The collecting chamber 19 is connected to the annular suction chamber 18 and the aspirator 20 through a connecting pipe 21.

[0030] It also includes a second rotating shaft 14, which is rotatably arranged on the lower side of the transmission chamber 6. One end of the second rotating shaft 14 passes through and extends to the inside of the discharge chamber 16, and the second rotating shaft 14 is rotatably connected to the discharge chamber 16. A spiral conveying blade 15 is welded to the outer wall of one end of the second rotating shaft 14 located inside the discharge chamber 16.

[0031] When in use, the aspirator 20 is started when metal powder is screened, which can generate negative pressure inside the collecting chamber 19. The annular suction chamber 18 can generate suction through the connection of the connecting pipe 21 to suck the scattered metal powder into the collecting chamber 19. The first sealing door 24 can further prevent the metal powder from escaping. The second screening net 23 with a smaller aperture can prevent the metal powder from entering the aspirator 20, thereby effectively reducing the escape of metal powder and avoiding harm to the health of the staff.

[0032] See also Figure 1 A motor 12 is disposed on one side of the transmission cavity 6, and a first rotating shaft 11 is disposed on the output end of the motor 12 through a coupling, and the first rotating shaft 11 is welded and fixed to the reciprocating screw 7, and the motor 12 provides power for the rotation of the first rotating shaft 11 and the reciprocating screw 7;

[0033] See also Figure 1 , Figure 3 and Figure 5 The first rotating shaft 11 and the second rotating shaft 14 are connected to each other through a transmission belt 13 at one end of the transmission chamber 6. The transmission belt 13 realizes the synchronous rotation of the first rotating shaft 11 and the second rotating shaft 14, reduces the number of motors 12, and reduces production costs.

[0034] See also Figure 1 Electromagnets 22 are installed on both sides of the collecting chamber 19, and a second screening net 23 is provided on the lower side of the collecting chamber 19. The floating metal powder can be adsorbed by starting the electromagnet 22 to prevent the metal powder from escaping when it is taken out. The aperture of the second screening net 23 is small, which can prevent the metal powder from entering the aspirator 20.

[0035] See also Figure 1 The upper and lower ends of the screening seat 3 are both provided with elastic fabrics 5, and the other ends of the elastic fabrics 5 are both connected to the inside of the screening chamber 2. The elastic fabrics 5 can prevent the metal powder from escaping into the transmission chamber 6 during screening, thereby reducing the risk of equipment failure caused by the accumulation of metal powder. At the same time, it also plays a guiding role, so that the metal powder accurately falls on the upper end of the first screening net 4;

[0036] See also Figure 1 The inner wall of the discharge cavity 16 is adhered and fixed with a polypropylene film 17, and the surface smoothness of the polypropylene film 17 can effectively reduce the adhesion of metal micropowders, and can effectively reduce the adhesion and clogging of metal micropowders on the inner wall of the discharge cavity;

[0037] See also Figure 1 and Figure 2A first sealing door 24 is movably installed at the upper end of the main body 1, and a second sealing door 25 is movably installed on one side of the front end of the main body 1. The setting of the first sealing door 24 can effectively prevent the escape of metal micropowder, and the setting of the second sealing door 25 is convenient for the staff to take out the absorbed metal micropowder.

[0038] Working principle: when in use, open the first sealing door 24 to add metal powder into the interior of the screening chamber 2, and the metal powder will smoothly fall onto the first screening net 4 through the elastic cloth 5, start the motor 12, and drive the first rotating shaft 11 through the coupling to rotate the reciprocating screw 7, and the reciprocating screw 7 will drive the moving block 9 to rotate synchronously. Since the moving block 9 and the guide rod 8 slide together, the moving block 9 will be axially limited, and the rotation of the moving block 9 will be converted into a horizontal linear movement. The moving block 9 will cause the screening seat 3 to perform synchronous reciprocating linear movement through the connecting rod 10, so that the metal powder on the first screening net 4 can be screened. When screening, start the suction machine 20, and the suction machine 20 will generate negative pressure in the collecting chamber 19 through the connecting pipe 21, and then the annular suction chamber 18 will generate suction through the connection of the connecting pipe 21. When the metal powder escapes upward, it will be sucked into the interior of the collecting chamber 19 by the annular suction chamber 18, and then The second screening net 23 with a smaller aperture can prevent metal micropowder from entering the suction machine 20, thereby effectively reducing the escape of metal micropowder and avoiding harm to the health of the staff. When the staff opens the second sealing door 25 to take out the metal micropowder, the electromagnet 22 can be started to generate magnetic force to absorb the metal micropowder floating in the collection chamber 19, thereby avoiding the escape of metal micropowder after the second sealing door 25 is opened, further ensuring safety. The screened metal micropowder will enter the inside of the discharge chamber 16. At this time, the first rotating shaft 11 will rotate, and the transmission belt 13 can drive the second rotating shaft 14 to rotate synchronously. The second rotating shaft 14 will drive the spiral conveying blades 15 to rotate synchronously, thereby realizing spiral conveying of metal micropowder, avoiding blockage of metal micropowder during discharge, and by setting the polypropylene film 17, the adhesion and blockage of metal micropowder on the inner wall of the discharge chamber 16 can be effectively reduced, thereby improving the effect of discharge and conveying.

[0039] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A metal powder screening device, comprising a main body (1), a screening chamber (2) is provided inside the main body (1), a screening seat (3) is provided inside the screening chamber (2), a first screening net (4) is provided inside the screening seat (3), a discharge chamber (16) is provided at the lower end of the screening chamber (2), and the screening chamber (2) is communicated with the discharge chamber (16), characterized in that: It also includes a transmission chamber (6), which is opened on one side of the screening chamber (2); a reciprocating screw (7) is rotatably arranged on the upper side of the transmission chamber (6); the external thread of the reciprocating screw (7) is connected to a moving block (9); a connecting rod (10) is welded to one side of the moving block (9); one end of the connecting rod (10) passes through and extends to the inside of the screening chamber (2), and the connecting rod (10) is connected to the screening chamber (2); a guide rod (8) is welded above the reciprocating screw (7); the guide rod (8) passes through the moving block (9), and the guide rod (8) and the moving block (9) are slidably matched; It also comprises a collecting chamber (19) which is opened on the other side of the screening chamber (2); an annular air suction chamber (18) is opened at the upper end of the screening chamber (2); an air suction machine (20) is arranged below the collecting chamber (19); the collecting chamber (19) is connected to the annular air suction chamber (18) and the air suction machine (20) via a connecting pipe (21); It also includes a second rotating shaft (14), which is rotatably arranged at the lower side of the transmission chamber (6), one end of the second rotating shaft (14) passes through and extends into the discharge chamber (16), and the second rotating shaft (14) is rotatably connected to the discharge chamber (16), and a spiral conveying blade (15) is welded to the outer wall of one end of the second rotating shaft (14) located inside the discharge chamber (16).

2. The metal powder screening device according to claim 1, characterized in that: A motor (12) is arranged on one side inside the transmission cavity (6), and a first rotating shaft (11) is arranged at the output end of the motor (12) via a coupling, and the first rotating shaft (11) is fixed to the reciprocating screw (7) by welding.

3. The metal powder screening device according to claim 2, characterized in that: The first rotating shaft (11) is connected to the second rotating shaft (14) at one end located inside the transmission chamber (6) by a transmission belt (13).

4. The metal powder screening device according to claim 1, characterized in that: Electromagnets (22) are installed on both sides of the collecting chamber (19), and a second screening net (23) is arranged on the lower side of the collecting chamber (19).

5. The metal powder screening device according to claim 1, characterized in that: The upper and lower ends of the screening seat (3) are both provided with elastic fabric (5), and the other end of the elastic fabric (5) is connected to the inside of the screening cavity (2).

6. The metal powder screening device according to claim 1, characterized in that: A polypropylene film (17) is bonded and fixed to the inner wall of the discharge cavity (16).

7. The metal powder screening device according to claim 1, characterized in that: A first sealing door (24) is movably mounted on the upper end of the main body (1), and a second sealing door (25) is movably mounted on one side of the front end of the main body (1).

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