Material opening cleaning system for metal powder processing equipment

Abstract

The utility model relates to a material port cleaning system for metal powder processing equipment, which comprises a material port section in butt joint with a metal powder discharging port or a feeding port valve and a feeding port or a discharging port valve of the metal powder processing equipment, an air inlet nozzle port and an air outlet port are arranged on the side wall of the material port section, the air inlet nozzle port is connected with an air source through an air inlet pipe, and the air outlet port is connected with an air outlet pipe. The gas-material discharging opening is connected with a vacuum pump system through a gas outlet pipe, the vacuum pump system is used for vacuumizing the material opening section, a first valve is installed on the gas inlet nozzle opening or the gas inlet pipe, a second valve is installed on the gas-material discharging opening or the gas outlet pipe, after the second valve is opened, the vacuum pump system vacuumizes the material opening section, and after the first valve is opened, the second valve is opened. An air source cleans the interior of the material opening section through the air inlet nozzle opening; the utility model has the advantages that the automatic cleaning of the material port section is realized through the electrically combined cleaning system, so that a plurality of problems of manual cleaning are solved, and the automatic butt joint of the material tank between upstream and downstream equipment is realized and convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of metal powder industry, in particular to a material inlet cleaning system for metal powder processing equipment. Background Art

[0002] After the metal powder processing equipment has finished feeding or discharging and the valve of the processing equipment has been closed, metal powder will remain from the outside of the valve to the feed port. These metal powders lose the protection of inert gas and are easily deteriorated when exposed to the air. If these deteriorated metal powders are mixed with qualified metal powders that pass through the feed port next time, the quality of the produced metal powder products will be reduced or waste will appear. At present, these deteriorated powders are basically cleaned manually, which pollutes the environment and easily causes harm to the health of the operator, and it is impossible to achieve automatic docking of the material tank with upstream and downstream equipment. There is an urgent need for a cleaning system that can automatically clean the feed port. Utility Model Content

[0003] In view of the above problems, the purpose of the utility model is to provide a material inlet cleaning system for metal powder processing equipment, which is used to automatically clean the material inlet of processing equipment in the metal powder industry that requires inert gas protection, so as to overcome the shortcomings of the above-mentioned prior art.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A material inlet cleaning system for metal powder processing equipment comprises: a material inlet section that connects a metal powder outlet or inlet valve with a metal powder processing equipment inlet or outlet valve, wherein the improvement is that an air inlet nozzle and an air material outlet are provided on the side wall of the material inlet section, the air inlet nozzle is connected to an air source via an air inlet pipe, and the air material outlet is connected to a vacuum pump system via an air outlet pipe, the vacuum pump system is used to evacuate the material inlet section, a first valve is installed on the air inlet nozzle or the air inlet pipe, and a second valve is installed on the air material outlet or the air outlet pipe, after the second valve is opened, the vacuum pump system evacuates the material inlet section, after the first valve is opened, the gas in the air source cleans the material inlet section via the air inlet nozzle, and the air material outlet is used to discharge the gas mixed with metal impurities.

[0006] As a preferred embodiment of the present invention, the gas source stores a gas that does not contain oxygen.

[0007] As a preferred embodiment of the present invention, the gas source stores inert gas, nitrogen or natural gas.

[0008] As a preferred embodiment of the utility model, the vacuum pump system includes: a vacuum pump and a filter, the vacuum pump is connected to the filter, the filter is connected to the air outlet pipe, the vacuum pump vacuums the material port section through the filter, the air outlet pipe, and the gas material outlet in sequence, and the filter is used to filter the metal powder impurities discharged from the gas material outlet and play a vacuum buffering role.

[0009] As a preferred embodiment of the present invention, the vacuum pump system also includes a first pressure gauge, which is used to monitor the pressure of the pipeline from the second valve to the filter. When the pressure monitored by the first pressure gauge is lower than the set pressure, the first pressure gauge controls the second valve to close through the PLC control cabinet.

[0010] As a preferred embodiment of the utility model, a second pressure gauge is provided on the intake pipe, and the second pressure gauge is used to monitor the pressure in the intake pipe. When the second pressure gauge monitors that the pressure in the intake pipe is lower than the set pressure, the second pressure gauge controls the first valve to close through the PLC control cabinet.

[0011] As a preferred embodiment of the utility model, two groups of air inlet nozzle openings are provided on the side wall of the material inlet section, and the two groups of air inlet nozzle openings are arranged opposite to each other.

[0012] As a preferred embodiment of the utility model, four air inlet nozzle openings are provided on the side wall of the material inlet section, and the four air inlet nozzle openings are arranged in groups of two and opposite to each other.

[0013] As a preferred embodiment of the present invention, three air inlet nozzle openings are provided on the side wall of the material inlet section, and the three air inlet nozzle openings are arranged at 120°.

[0014] As a preferred embodiment of the utility model, the air inlet nozzle opening and the air-material discharge opening are installed on the side wall at the middle position of the material opening section.

[0015] The advantages and positive effects of the utility model are:

[0016] 1. The utility model adds an electric cleaning system to the material inlet section, realizes automatic cleaning of the material inlet section through the electric cleaning system, thereby solving many problems of manual cleaning and facilitating automatic docking of the material tank with upstream and downstream equipment.

[0017] 2. The utility model uses a vacuum pump system to evacuate the material inlet section, so that the material inlet section changes from a normal pressure state to a negative pressure state. When the inert gas in a positive pressure state enters the air inlet nozzle through the air inlet pipe, the inside of the material inlet section can be effectively cleaned.

[0018] 3. Four air inlet nozzles are provided in the middle position of the side wall of the material inlet section of the utility model. The four air inlet nozzles are arranged in pairs and opposite to each other, so that the four opposite air inlet nozzles can realize the overall cleaning of the inner cavity of the material inlet section. In addition, the four air inlet nozzles can also be used in combination with a variety of purge forms, that is, simultaneous purge, sequential purge, or alternating purge, to cope with different material inlet types or volumes.

[0019] 4. The electric cleaning system of the utility model also has the function of replacing oxygen. Since the existing material port section needs to add an oxygen replacement device to replace the air in the material port section, the material port section cleaned by the electric cleaning system of the present application does not need to be equipped with an additional oxygen replacement device. After the vacuum pump is evacuated inside the material port section, the air retained in the material port section has been replaced with inert gas during the inert gas cleaning process.

[0020] 5. The vacuum pump system of the utility model also includes a filter, which can filter and collect the metal powder impurities in the material inlet section. While protecting the environment, the collected metal powder impurities can also be recycled.

[0021] 6. The utility model also adds a first pressure gauge and a second pressure gauge to monitor the material port cleaning system in real time to ensure an alarm and stop the material port cleaning system when the vacuum pump fails or the gas source is short of gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0023] Figure 2 It is a schematic diagram of the utility model.

[0024] Figure 3 It is a side view of the material mouth section of the utility model.

[0025] Figure 4 yes Figure 3 AA section view.

[0026] Figure 5 It is one of the installation schematic diagrams of the utility model material inlet section and material tank outlet valve, and metal powder processing equipment inlet valve.

[0027] Figure 6 This is the second schematic diagram of the installation of the utility model material inlet section and the material tank outlet valve, and the metal powder processing equipment inlet valve.

[0028] Figure numerals: material tank metal powder outlet valve 1, metal powder processing equipment inlet valve 2, material port section 3, air inlet nozzle 4, gas material discharge port 5, air inlet pipe 6, air outlet pipe 7, first valve 8, second valve 9, vacuum pump 10, filter 11, first pressure gauge 12, PLC control cabinet 13, second pressure gauge 14, pressure reducer 15, gas source 16. DETAILED DESCRIPTION

[0029] See also Figure 1-6 The present embodiment provides a material inlet cleaning system for metal powder processing equipment, comprising: a material inlet section 3 that connects a metal powder outlet valve 1 of a material tank and a material inlet valve 2 of a metal powder processing equipment, four air inlet nozzle openings 4 and a gas material discharge opening 5 are provided on the side wall of the material inlet section 3, the four air inlet nozzle openings 4 are connected to an air source 16 through four air inlet pipes 6, and one gas material discharge opening 5 is connected to a vacuum pump system through an air outlet pipe 7, the vacuum pump system is used to evacuate the material inlet section 3, a first valve 8 is installed on each air inlet pipe 6, and a second valve 9 is installed on the air outlet pipe 7, when the second valve 9 is opened, the vacuum pump system evacuates the material inlet section 3, after the first valve 8 is opened, the inert gas in the gas source 16 cleans the material inlet section 3 through the air inlet nozzle openings 4, and the cleaned metal powder impurities and the purged inert gas are discharged from the gas material discharge opening 5, the air inlet pipe 6 is a positive pressure pipe, the air outlet pipe 7 is a negative pressure pipe, the first valve 8 is a positive pressure valve, and the second valve 9 is a negative pressure valve.

[0030] See also Figure 2 The vacuum pump system in this embodiment includes: a vacuum pump 10, a filter 11 and a first pressure gauge 12. The vacuum pump 10 is connected to the filter 11, and the filter 11 is connected to the air outlet pipe 7. The vacuum pump 10 sequentially evacuates the material port section 3 through the filter 11, the air outlet pipe 7, and the gas material outlet 5. The filter 11 is used to filter the metal powder impurities discharged from the gas material outlet 5, and to recycle the filtered inert gas for reuse. The first pressure gauge 12 is used to monitor the pressure of the pipeline from the second valve 9 to the filter 11. When the pressure monitored by the first pressure gauge 12 is lower than the set pressure, the first pressure gauge 12 controls the second valve 9 to be closed through the PLC control cabinet 13.

[0031] See also Figure 2 In this embodiment, a pressure reducer 15 is installed on the side of the air intake pipe 6 close to the air source 16. The pressure reducer 15 is used to reduce the pressure in the air intake pipe 6. A second pressure gauge 14 is provided on the air intake pipe 6 and in front of the pressure reducer 14. The second pressure gauge 14 is used to monitor the pressure in the air intake pipe 6. When the second pressure gauge 14 monitors that the pressure in the air intake pipe 6 is lower than the set pressure, the second pressure gauge 14 controls the first valve 8 to be closed through the PLC control cabinet 13. The PLC control cabinet 13 is electrically connected to the first valve 8, the second valve 9, the vacuum pump 10, the first pressure gauge 12, the second pressure gauge 14, and the pressure reducer 15.

[0032] See also Figure 3 and Figure 4The material inlet section in this embodiment includes an upper opening, a lower opening, four air inlet nozzle openings 4 and a gas material outlet 5. The four air inlet nozzle openings 4 are opened in the middle position of the side wall of the material inlet section. The four air inlet nozzle openings 4 are arranged in a cross shape, and the gas material outlet 5 is opened in the middle position of the side wall of the material inlet section.

[0033] The gas in the gas source 16 in this embodiment may be nitrogen, inert gas or natural gas.

[0034] Working principle: After the material inlet section 3 outside the metal powder processing equipment's material inlet valve 2 is connected to the material tank's metal powder outlet valve 1, the metal powder processing equipment's material inlet valve 2 and the material tank's metal powder outlet valve 1 are not opened at this time. Therefore, the material inlet section 3 is in a closed state. The vacuum pump 10 is used to evacuate the material inlet section 3 to change the material inlet section 3 from a normal pressure state to a negative pressure state. Then the gas source 16 purges the material inlet section 3 through the four air inlet nozzles 4. At the same time, the vacuum pump 10 continues to evacuate the material inlet section 3 to draw the purged metal powder impurities into the filter 11. The filter 11 filters out the metal powder impurities and recycles the inert gas for reuse, or leads it to an open place for discharge into the air. After the cleaning is qualified, the inlet section 3 is filled with inert gas. Therefore, the material tank's metal powder outlet valve 1 and the metal powder processing equipment's material inlet valve 2 can be directly opened for feeding.

[0035] The working process includes the following steps:

[0036] Step 1, pre-vacuuming: close the second valve 9, start the vacuum pump 10, vacuum the pipes and filter 11 between the outlet pipe 7 and the vacuum pump 10, and stop the vacuum pump 10 after the vacuum reaches the standard. The purpose of pre-vacuuming is: the vacuum pump system passes through many long pipelines. When the material inlet section 3 is cleaned each time, the above pipelines are re-vacuumed, resulting in a long cleaning time, affecting work efficiency. The pre-vacuuming process can effectively solve the above problem. When the material inlet section 3 needs to be cleaned, the pre-vacuumed pipeline can immediately vacuum the material inlet section 3.

[0037] Step 2, material inlet cleaning: first open the second valve 9 and start the vacuum pump 10 to continuously suck. When the material inlet section 3 changes from normal pressure to negative pressure, then open the first valve 8, and the nitrogen in the gas source 16 passes through the four air inlet nozzles 4 to positively purge the inside of the material inlet section 3 for 1 to 10 seconds.

[0038] Step 3, positive pressure purging sequence: through the program control of the PLC control cabinet 13, purging simultaneously or sequentially or alternately, it is determined according to the type or volume of the material inlet section 3.

[0039] Step 4: The positive pressure and flow rate, the negative pressure and flow rate are determined according to the type or volume of the material inlet section 3 and are controlled by the PLC control cabinet 13 .

[0040] Step 5, positive pressure purge cycle number: purge once for each of the four air inlet nozzles 4 is counted as one cycle, and the number of cycles is determined according to the type or volume of the material inlet section 3 and is controlled by the PLC control cabinet 13.

[0041] Step 6: The diameter of the air inlet nozzle 4 is determined according to the type or volume of the material inlet section 3.

[0042] The above are only specific implementations of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A material inlet cleaning system for metal powder processing equipment, comprising: The material inlet section of the metal powder discharge port or feed port valve connected to the feed port or discharge port valve of the metal powder processing equipment is characterized in that an air inlet nozzle and a gas material discharge port are provided on the side wall of the material inlet section, the air inlet nozzle is connected to the gas source through an air inlet pipe, and the gas material discharge port is connected to the vacuum pump system through an air outlet pipe, the vacuum pump system is used to vacuum the material inlet section, a first valve is installed on the air inlet nozzle or the air inlet pipe, and a second valve is installed on the gas material discharge port or the air outlet pipe, after the second valve is opened, the vacuum pump system vacuums the material inlet section, after the first valve is opened, the gas in the gas source cleans the material inlet section through the air inlet nozzle, and the gas material discharge port is used to discharge the gas mixed with metal impurities.

2. A material inlet cleaning system for metal powder processing equipment according to claim 1, characterized in that: The gas source stores gas that does not contain oxygen.

3. The inlet cleaning system for metal powder processing equipment according to claim 1, characterized in that: The gas source stores inert gas, nitrogen or natural gas.

4. The inlet cleaning system for metal powder processing equipment according to claim 1, characterized in that: The vacuum pump system includes: a vacuum pump and a filter, the vacuum pump is connected to the filter, the filter is connected to the air outlet pipe, the vacuum pump sequentially evacuates the material inlet section through the filter, the air outlet pipe, and the gas material outlet, and the filter is used to filter the metal powder impurities discharged from the gas material outlet.

5. The inlet cleaning system for metal powder processing equipment according to claim 4, characterized in that: The vacuum pump system also includes a first pressure gauge, which is used to monitor the pressure of the pipeline from the second valve to the filter. When the pressure monitored by the first pressure gauge is lower than the set pressure, the first pressure gauge controls the second valve to close through the PLC control cabinet.

6. The inlet cleaning system for metal powder processing equipment according to claim 1, characterized in that: The air intake pipe is provided with a second pressure gauge for monitoring the pressure in the air intake pipe. When the second pressure gauge detects that the pressure in the air intake pipe is lower than the set pressure, the second pressure gauge controls the first valve to be closed through the PLC control cabinet.

7. The inlet cleaning system for metal powder processing equipment according to claim 1, characterized in that: Two groups of air inlet nozzle openings are provided on the side wall of the material inlet section, and the two groups of air inlet nozzle openings are arranged opposite to each other.

8. The inlet cleaning system for metal powder processing equipment according to claim 1, characterized in that: Four air inlet nozzles are provided on the side wall of the material inlet section, and the four air inlet nozzles are arranged in pairs and opposite to each other.

9. The inlet cleaning system for metal powder processing equipment according to claim 1, characterized in that: Three air inlet nozzle openings are provided on the side wall of the material opening section, and the three air inlet nozzle openings are arranged at 120 degrees.

10. The inlet cleaning system for metal powder processing equipment according to claim 1, characterized in that: The air inlet nozzle opening and the air and material discharge opening are installed on the side wall at the middle position of the material opening section.

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