A gas supply drying mechanism for a gemstone screening apparatus

Abstract

This utility model discloses an air supply and drying mechanism for gemstone screening equipment, including an air pump, a pneumatic two-piece assembly, a dryer, and air pipes and pipe connectors connecting the various components. The air pump is connected to the pneumatic two-piece assembly, which is connected to the dryer, and the dryer is connected to the air-consuming end of the gemstone screening equipment. The pneumatic two-piece assembly includes an integrated air filter and a pressure reducing valve, with a filter cotton core inside the air filter. The dryer includes a drying body, a precision filter, a fixing plate, and a throttle valve. The drying body is filled with an adsorbent, which is either silica gel or activated alumina. The precision filter contains a polytetrafluoroethylene (PTFE) filter membrane. The fixing plate has mounting holes for detachably fixing the dryer to the frame of the gemstone screening equipment. The throttle valve is connected in series at the air outlet of the dryer. The purpose of this utility model is to provide a clean and dry air source for gemstone screening.

Description

Technical Field

[0001] This utility model belongs to the technical field of gemstone production and manufacturing equipment, and in particular relates to an air supply and drying mechanism for gemstone screening equipment. Background Technology

[0002] In gemstone sorting equipment, compressed air serves as the core power source, driving air nozzles to classify and sort gemstones. This is typically achieved by precisely controlling the airflow pressure, flow rate, and cleanliness to separate gemstone particles of different sizes and densities. Therefore, the stability of the air supply system directly affects the sorting accuracy and equipment lifespan.

[0003] In the existing technology, the air supply system of gemstone screening equipment usually consists of an air pump, a simple filter and connecting pipelines, but it has defects such as insufficient air source cleanliness, poor air pressure stability, low drying efficiency and inconvenient maintenance. Utility Model Content

[0004] In view of the shortcomings of the prior art described above, the purpose of this utility model is to provide a clean and dry gas source for gemstone screening.

[0005] This application provides an air supply and drying mechanism for a gemstone screening device, including an air pump, a pneumatic two-piece assembly, a dryer, and air pipes and air pipe connectors connecting the various components; the air outlet of the air pump is sealed to the air inlet of the pneumatic two-piece assembly through an air pipe, the air outlet of the pneumatic two-piece assembly is sealed to the air inlet of the dryer through an air pipe, and the air outlet of the dryer is connected to the air-consuming end of the gemstone screening device through the air pipe connector.

[0006] The pneumatic two-piece assembly includes an integrated air filter and a pressure reducing valve, and the air filter contains a filter cotton core.

[0007] The dryer includes a drying body, a precision filter, a fixing plate, and a throttle valve. The drying body is filled with an adsorbent, which is silica gel or activated alumina. The precision filter contains a polytetrafluoroethylene (PTFE) filter membrane. The fixing plate has mounting holes for detachably fixing the dryer to the frame of the gemstone screening equipment. The throttle valve is connected in series at the outlet of the dryer to adjust the output gas flow rate according to the actual gas consumption of the gemstone screening equipment.

[0008] Furthermore, the air filter of the pneumatic two-piece assembly is equipped with an automatic drain valve at the bottom. The automatic drain valve has a float-type structure and can automatically open to drain water when the condensate level in the air filter reaches a preset height.

[0009] Furthermore, a pressure gauge is embedded in the pressure reducing valve of the pneumatic two-piece assembly to display the stable air pressure value output by the pressure reducing valve in real time.

[0010] Furthermore, the dryer has a transparent observation window on the outside of the drying body. The transparent observation window is made of high-pressure resistant polycarbonate material and is used to observe the color change of the adsorbent inside.

[0011] Furthermore, a differential pressure indicator is provided between the precision filter and the drying body of the dryer.

[0012] Furthermore, the throttle valve is equipped with a knob-type adjustment structure. The knob has anti-slip texture on the outside and is marked with flow rate scale, which is convenient for adjusting the gas flow rate.

[0013] Specifically, the air pump is an oil-free, silent piston air pump.

[0014] Specifically, the air pipes connecting the various components are high-pressure resistant polyurethane air pipes.

[0015] The improvements in this application bring the following advantages: The air supply and drying mechanism for a gemstone screening device, as described in this embodiment, achieves comprehensive purification of compressed air through a two-stage purification structure consisting of a pneumatic two-piece preliminary filtration and a dryer for deep treatment. This greatly avoids gemstone adhesion caused by moisture blown from the air nozzle, as well as oil mist contamination of the gemstone surface. Furthermore, the coordinated control of the pressure reducing valve and the throttle valve ensures precise and stable airflow parameters. Constant air pressure and flow rate guarantee the consistency of the airflow trajectory from the air nozzle, meeting the requirements of high-precision screening. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0017] Figure 1 The application embodiment provides a three-dimensional structural schematic diagram of an air supply and drying mechanism for a gemstone screening device (not shown in the air pipe diagram).

[0018] Among them, 1. Air pump; 2. Pneumatic two-piece assembly; 21. Air filter; 3. Dryer; 31. Drying body; 32. Fixing plate; 33. Throttling valve; 4. Air pipe connector.

[0019] The purpose, features, and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0021] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0022] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0023] Please see Figure 1 As shown in the figure, an embodiment of this application provides an air supply and drying mechanism for a gemstone screening device, including an air pump 1, a pneumatic two-piece assembly 2, a dryer 3, and air pipes (not shown in the figure) and air pipe connectors 4 connecting the various components.

[0024] The air outlet of the air pump 1 is sealed to the air inlet of the pneumatic two-piece assembly 2 through an air pipe. The air outlet of the pneumatic two-piece assembly 2 is sealed to the air inlet of the dryer 3 through an air pipe. The air outlet of the dryer 3 is connected to the air-using end of the gemstone screening equipment through an air pipe connector 4.

[0025] Air pump 1 is preferably an oil-free, silent piston air pump with a working noise level of no more than 60dB, which meets the requirements of gemstone screening equipment for low noise, small size, and lightweight use.

[0026] The air tubes connecting the various components are preferably high-pressure resistant polyurethane air tubes, which are resistant to aging and bending, and have a service life of not less than 3000 hours.

[0027] The pneumatic two-piece assembly 2 includes an integrated air filter 21 and a pressure reducing valve (not shown in the figure).

[0028] The air filter 21 is equipped with a filter cotton core (not shown in the figure). The filter cotton core preferably has a filtration accuracy of no more than 5μm. It is used to perform preliminary filtration of solid impurities in the gas output by the air pump 1 and to separate oil mist from the gas.

[0029] The pressure regulating range of the pressure reducing valve is preferably 0.1-0.8MPa, which is used to stabilize the gas after preliminary filtration at a preset pressure value and avoid pressure fluctuations affecting the blowing stability of the gemstone screening equipment.

[0030] The air filter 21 of the pneumatic two-piece assembly 2 is equipped with an automatic drain valve at the bottom. The automatic drain valve has a float-type structure. When the condensate level in the air filter 21 reaches the preset height, it can automatically open to drain without manual operation.

[0031] A pressure gauge is embedded in the pressure reducing valve of the pneumatic two-piece assembly 2. The pressure gauge is preferably 0-1MPa in range and preferably has an accuracy class of not less than 1.6. It is used to display the stable air pressure value output by the pressure reducing valve in real time, so as to facilitate the operator's monitoring and adjustment.

[0032] The dryer 3 includes a drying body 31, a precision filter, a fixed plate 32, and a throttle valve 33.

[0033] The drying body 31 is filled with an adsorbent (not shown in the figure), preferably silica gel or activated alumina, to adsorb moisture in the gas and significantly reduce the gas dew point. A precision filter contains a polytetrafluoroethylene (PTFE) membrane with a filtration accuracy preferably not greater than 0.01 μm, used for secondary filtration of the gas after dehydration by the drying body 31, removing residual fine oil mist and adsorbent dust. The mounting plate 32 is made of metal and has mounting holes for detachably fixing the dryer 3 to the frame of the gemstone screening equipment. A throttle valve 33 is connected in series at the outlet of the dryer 3, with a flow rate adjustment range preferably of 0.1-5 L / min, used to adjust the output gas flow rate according to the actual gas consumption of the gemstone screening equipment.

[0034] The dryer 3 has a transparent observation window on the outside of the drying body 31. The transparent observation window is made of high pressure resistant polycarbonate material and is used to observe the color change of the adsorbent inside. For example, when the adsorbent changes from blue to pink or from white to yellowish-brown, it indicates that the adsorbent needs to be replaced.

[0035] A differential pressure indicator is provided between the precision filter of the dryer 3 and the drying body 31. The trigger differential pressure of the differential pressure indicator is preferably 0.1 MPa. When the pressure difference between the two ends of the precision filter membrane reaches 0.1 MPa due to impurities clogging the membrane, the indicator will issue a red warning, indicating that the filter membrane needs to be replaced.

[0036] The throttle valve 33 is equipped with a knob-type adjustment structure. The knob has anti-slip texture on the outside and flow rate scale is marked on the knob, which makes it easy for operators to accurately adjust the gas flow rate.

[0037] During operation, the compressed air generated by the air pump 1 is first filtered by the air filter 21 of the pneumatic two-piece assembly 2, then pressure-regulated by the pressure reducing valve, then dehydrated by the drying body 31 of the dryer 3, and then filtered a second time by the precision filter. Finally, after the flow rate is regulated by the throttle valve 33, the dry and clean compressed air is supplied to the air nozzle of the gemstone sorting equipment. It is suitable for gemstone sorting scenarios where the air consumption is not large and continuous operation for a long time is required.

[0038] The above are merely preferred embodiments of this utility model and do not limit the patent scope of this utility model. Any equivalent structural transformations made based on the inventive concept of this utility model and the contents of this utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this utility model.

Claims

1. A gas supply and drying mechanism for a gemstone screening device, characterized in that, It includes an air pump, a pneumatic two-piece assembly, a dryer, and air pipes and air pipe connectors connecting the various components; the air outlet of the air pump is sealed to the air inlet of the pneumatic two-piece assembly through an air pipe, the air outlet of the pneumatic two-piece assembly is sealed to the air inlet of the dryer through an air pipe, and the air outlet of the dryer is connected to the air-using end of the gemstone screening equipment through the air pipe connector. The pneumatic two-piece assembly includes an integrated air filter and a pressure reducing valve, and the air filter contains a filter cotton core. The dryer includes a drying body, a precision filter, a fixing plate, and a throttle valve. The drying body is filled with an adsorbent, which is silica gel or activated alumina. The precision filter contains a polytetrafluoroethylene (PTFE) filter membrane. The fixing plate has mounting holes for detachably fixing the dryer to the frame of the gemstone screening equipment. The throttle valve is connected in series at the outlet of the dryer to adjust the output gas flow rate according to the actual gas consumption of the gemstone screening equipment.

2. The gas supply drying mechanism according to claim 1, characterized in that, The air filter of the pneumatic two-piece assembly is equipped with an automatic drain valve at the bottom. The automatic drain valve is a float-type structure. When the condensate level in the air filter reaches a preset height, it can automatically open to drain the water.

3. The gas supply drying mechanism according to claim 2, characterized in that, The pressure reducing valve of the pneumatic two-piece assembly is equipped with a pressure gauge to display the stable air pressure value output by the pressure reducing valve in real time.

4. The gas supply drying mechanism according to claim 1, characterized in that, The dryer has a transparent observation window on the outside of the drying body. The transparent observation window is made of high-pressure resistant polycarbonate material and is used to observe the color change of the adsorbent inside.

5. The gas supply drying mechanism according to claim 4, characterized in that, A differential pressure indicator is provided between the precision filter and the drying body of the dryer.

6. The gas supply drying mechanism according to claim 5, characterized in that, The throttle valve is equipped with a knob-type adjustment structure. The knob has anti-slip texture on the outside and is marked with flow rate scale, which is convenient for adjusting the gas flow rate.

7. The gas supply drying mechanism according to any one of claims 1-6, characterized in that, The air pump is an oil-free, silent piston air pump.

8. The gas supply drying mechanism according to any one of claims 1-6, characterized in that, The air pipes connecting the various components are high-pressure resistant polyurethane air pipes.

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