An oil-free double-cylinder air compressor

Abstract

The present application relates to an oil-free double-cylinder air compressor, including a compression cylinder and an air storage tank, and also including an air-water separation component and a water collecting box. The air-water separation component is used to separate the water in the compressed gas. The air-water separation component includes a conical barrel with a spiral cavity, and the conical barrel is respectively provided with an inlet, a water outlet and an air outlet connecting the spiral cavity and the outside. The inlet is tangent to the inner wall of the spiral cavity, and the inlet is connected to the compression cylinder pipeline. The water collecting box is detachably connected to the water outlet, and the air outlet is connected to the air storage tank pipeline. After the compressed gas enters from the inlet, it spirally rotates downward along the inner wall of the spiral cavity. Through gravity separation and centrifugal separation, the water and impurities in the gas compressed by the compression cylinder are separated, so that the water and impurities enter the water collecting box, and the gas with less water content enters the air storage tank; the subsequent drainage only needs to shut down the air compressor, remove the water collecting box, dump it and clean it, and then reinstall it to the water outlet. Compared with the traditional drainage process, the drainage process of the air compressor is safer.

Description

Technical Field

[0001] The invention relates to the field of air compressors, and in particular to an oil-free double-cylinder air compressor. Background Art

[0002] Air compressor, full name air compressor, is the main body of air source device. It is a device that converts the mechanical energy of the prime mover into gas pressure energy. It is a compressed air pressure generating device. It is the most commonly used air power supply equipment in industrial and mining enterprises. Usually air compressors are divided into screw air compressors, piston air compressors, etc.

[0003] The existing process of draining the air compressor gas tank is usually as follows: first, the air compressor is forked up by a forklift and placed in a high position, and the air compressor steam drum is adjusted to a horizontal level and fixed to prevent it from falling and damaging equipment and injuring people; then the gas inside the air compressor gas tank is drained at the output end of the air compressor, and after the gas is drained, the drain valve or drain screw at the bottom of the air compressor gas tank is loosened with a wrench, and after the water and oil in the gas tank are released and left to stand for half an hour, the drain valve is closed or the drain screw is tightened.

[0004] The air compressor drainage process in the prior art not only places the air compressor at a high place, posing a threat to the safety of the operator; since the condensate water inside the air compressor contains some impurities, there will still be a certain pressure inside the air compressor when the gas is not completely emptied. When the drain valve or drain screw of the air compressor tank is opened, the impurities in the condensate water are easily ejected under the action of pressure, which also threatens the safety of the operator. Summary of the invention

[0005] In order to make the air compressor drainage process safer, the present application provides an oil-free twin-cylinder air compressor.

[0006] The oil-free double-cylinder air compressor provided in this application adopts the following technical solution:

[0007] An oil-free twin-cylinder air compressor comprises a compression cylinder and an air storage tank, and also comprises an air-water separation component and a water collecting box. The air-water separation component is used to separate the moisture in the compressed gas. The air-water separation component comprises a conical barrel with a spiral cavity and a filter. The conical barrel is respectively provided with an inlet, a water outlet and an air outlet connecting the spiral cavity and the outside. The inlet is tangent to the inner wall of the spiral cavity. The inlet is connected to the compression cylinder pipeline. The water collecting box is detachably connected to the water outlet. The air outlet is connected to the air storage tank pipeline. The filter is fixedly connected to the air outlet. After the compressed gas enters from the inlet, it spirally rotates downward along the inner wall of the spiral cavity.

[0008] By adopting the above technical scheme, the air flow containing water and impurities enters the spiral cavity tangentially through the compression cylinder, and spirally rotates downward along the inner wall of the spiral cavity. The high-density water and impurities are swung outward to the inner wall of the spiral cavity under the action of centrifugal force, and sink to the side of the water outlet under the action of gravity, while the low-density gas rotates inward and rises to the side of the gas outlet, thereby reducing the possibility of gas with high water content entering the gas storage tank; through gravity separation and centrifugal separation, the water and impurities in the water-containing impurity gas compressed by the compression cylinder are separated, and the water and impurities enter the water collecting tank, and the gas with less water content enters the gas storage tank; the subsequent drainage process only needs to shut down the air compressor, remove the water collecting tank, dump it and clean it, and then reinstall it to the water outlet, which makes the air compressor drainage process safer than the traditional drainage process.

[0009] Preferably, a fluid-isolating cylinder is provided in the spiral cavity, one end of which is fixedly connected to the gas outlet, and the compressed gas enters from the inlet and spirally rotates downward along the inner wall of the spiral cavity and the outer wall of the fluid-isolating cylinder.

[0010] By adopting the above technical scheme, obstacles are set up so that the compressed gas can rotate downward in a spiral, reducing the possibility of chaotic gas flow; and the compressed gas containing water and impurities can enter from the inlet and collide with the outer wall of the liquid barrier tube, and the water droplets collide with the outer wall of the liquid barrier tube and are captured, while the compressed gas continues to flow; that is, through the method of collision separation, part of the water and impurities in the compressed gas containing water and impurities are separated from the gas, reducing the possibility of gas with a large water content entering the gas storage tank.

[0011] Preferably, a first sinking and floating chamber is opened on the side of the spiral chamber close to the water outlet, the bottom side of the first sinking and floating chamber is connected to the spiral chamber, a first floating block is movably connected in the first sinking and floating chamber, and when there is no water in the first sinking and floating chamber, the first floating block abuts against the water outlet.

[0012] By adopting the above technical scheme, the possibility of gas entering the water collecting tank from the water outlet is reduced; the water and impurities separated in the spiral cavity flow into the first sinking and floating cavity, and when there is a lot of water in the first sinking and floating cavity, the first floating block floats to the side away from the water outlet, so that the first floating block does not abut against the water outlet, and the water in the first sinking and floating cavity can flow out from the water outlet; when the water in the first sinking and floating cavity is not enough to make the first floating block float, the water outlet is blocked by the first floating block, thereby reducing the possibility of gas entering the water collecting tank from the water outlet.

[0013] Preferably, the gas-water separation component also includes a filter element, which is used to filter the gas entering the air outlet. The filter element includes multiple filter screens, and the multiple filter screens are respectively detachably connected to the liquid isolation cylinder. The density of the multiple filter screens is different, and the density of the filter screen gradually increases from the filter screen close to the air outlet to the filter screen far from the air outlet.

[0014] By adopting the above technical solution, the possibility of water and impurities entering the gas outlet is reduced; when gas containing a large amount of water enters the liquid isolation cylinder, it collides with the filter, so that the filter captures the water on the gas, that is, through the collision separation method, part of the water and impurities in the compressed gas containing water and impurities are separated from the gas, thereby reducing the possibility of gas with a large water content entering the gas storage tank.

[0015] Preferably, the gas storage tank is provided with a drain valve, and the drain valve is connected to the inlet pipe.

[0016] By adopting the above technical solution, the gas in the gas tank is cooled. When the compressed air passes through the gas tank, the high-speed airflow hits the wall of the gas tank to cause convergence, which rapidly reduces the temperature in the gas tank, liquefies a large amount of water vapor, and forms condensed water. The drain valve is connected to the inlet pipe, so that the gas in the gas tank drives the condensed water into the conical barrel, and the condensed water in the gas tank is discharged through the gas-liquid separation component, and the gas is returned to the gas tank, which reduces the loss of gas and makes the process of draining the condensed water in the air compressor gas tank safer.

[0017] Preferably, the gas-water separation component also includes a separation box with a separation chamber, the separation box is provided with a liquid inlet, a liquid outlet and an outlet connecting the outside and the separation chamber, the liquid inlet is connected to the drain valve pipe of the gas storage tank, the outlet is connected to the inlet pipe of the conical barrel, the liquid outlet is connected to the water collecting tank pipe, a plurality of baffles are fixedly connected in the separation chamber, the plurality of baffles are arranged alternately, and a water flow channel is provided at the bottom of the separation chamber.

[0018] By adopting the above technical solution, the condensed water and the compressed gas with moisture coming out of the gas storage tank are separated, so that a large amount of condensed water flows toward the outlet side through the water flow channel; multiple baffles hinder the flow of compressed gas, so that most of the moisture on the compressed gas collides with the baffle and drips down, reducing the possibility that the gas going out of the outlet carries a large amount of moisture.

[0019] Preferably, the separation chamber is gradually farther away from the liquid outlet from a side close to the liquid inlet to a side close to the outlet.

[0020] By adopting the above technical solution, it is possible to facilitate condensation of water toward the liquid outlet while reducing the possibility of gas moving toward the liquid outlet, thereby reducing gas entry.

[0021] Preferably, a second sinking and floating chamber is provided on the side of the separation chamber close to the outlet, the bottom side of the second sinking and floating chamber is connected to the separation chamber, a second floating block is movably connected in the second sinking and floating chamber, and when there is no water in the second sinking and floating chamber, the second floating block abuts against the liquid outlet.

[0022] By adopting the above technical scheme, the possibility of gas entering the water collecting tank from the outlet is reduced; the condensed water separated in the separation chamber flows into the second sinking and floating chamber, and when there is a lot of condensed water in the second sinking and floating chamber, the second floating block floats to the side away from the liquid outlet, so that the second floating block does not abut on the liquid outlet, and the condensed water in the second sinking and floating chamber can flow out from the liquid outlet. When the condensed water in the first sinking and floating chamber is not enough to make the second floating block float, the liquid outlet is blocked by the second floating block, thereby reducing the possibility of gas entering the water collecting tank from the liquid outlet.

[0023] The technical effects of the present invention are mainly reflected in the following aspects:

[0024] 1. The present invention sets a gas-liquid separation component, and allows the airflow containing water and impurities to enter the spiral cavity tangentially through the compression cylinder, and spirally rotate downward along the inner wall of the spiral cavity. High-density water and impurities are swung outwards to the inner wall of the spiral cavity under the action of centrifugal force, and sink to the side of the water outlet under the action of gravity, while low-density gas rotates inwards and rises to the side of the gas outlet, thereby reducing the possibility of gas with high water content entering the gas storage tank; through gravity separation and centrifugal separation, water and impurities in the water-containing impurity gas compressed by the compression cylinder are separated, and water and impurities enter the water collecting tank, while gas with low water content enters the gas storage tank; the subsequent drainage process only needs to shut down the air compressor, remove the water collecting tank, dump it and clean it, and then reinstall it to the water outlet, which makes the air compressor drainage process safer than the traditional drainage process;

[0025] 2. The present invention provides a liquid barrier and an obstacle to allow the compressed gas to spiral downward, thereby reducing the possibility of chaotic gas flow; and allows the compressed gas containing water and impurities to collide with the outer wall of the liquid barrier after entering from the inlet, and the water droplets collide with the outer wall of the liquid barrier and are captured, while the compressed gas continues to flow; that is, through the collision separation method, part of the water and impurities in the compressed gas containing water and impurities are separated from the gas, thereby reducing the possibility of gas with a large water content entering the gas storage tank;

[0026] 3. The present invention separates the condensed water and the compressed gas with moisture coming out of the gas storage tank by setting a separation box, so that a large amount of condensed water flows toward the outlet side through the water flow channel; multiple baffles hinder the flow of compressed gas, so that most of the moisture on the compressed gas collides with the baffle and drips down, thereby reducing the possibility that the gas going out of the outlet carries a large amount of moisture. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present application.

[0028] Figure 2 It is a schematic diagram of the gas-water separation component structure of an embodiment of the present application.

[0029] Figure 3It is a schematic diagram of the conical barrel structure of an embodiment of the present application.

[0030] Figure 4 It is a schematic diagram of the separation box structure of an embodiment of the present application.

[0031] Explanation of the reference numerals: 1. compression cylinder; 11. air storage tank; 111. drain valve; 12. water collecting tank; 13. snap-on frame; 14. condenser; 141. cooling pipe; 2. air-water separation assembly; 21. conical barrel; 211. spiral cavity; 212. inlet; 213. water outlet; 214. air outlet; 215. liquid separator; 216. first sinking and floating cavity; 217. first floating block; 22. filter element; 221. filter screen; 222. threaded block; 23. separation box; 231. separation cavity; 232. water flow channel; 233. liquid inlet; 234. liquid outlet; 235. outlet; 236. baffle; 237. second sinking and floating cavity; 238. second floating block. DETAILED DESCRIPTION

[0032] The following is combined with Figure 1-4 The present application is further described in detail to make the technical solution of the present application easier to understand and grasp.

[0033] The embodiment of the present application discloses an oil-free double-cylinder air compressor.

[0034] Reference Figure 1 and Figure 2 An oil-free twin-cylinder air compressor of this embodiment includes a compression cylinder 1 and an air tank 11, wherein the compression cylinder 1 is fixedly connected to the air tank 11, and further includes an air-water separation component 2 and a water collecting tank 12, wherein a snap-on frame 13 which can be snap-fitted with the water collecting tank 12 is fixedly connected to the air tank 11, and when the water collecting tank 12 is installed on the air tank 11, the water collecting tank 12 is snap-fitted with the snap-on frame 13; the air-water separation component 2 is used to separate the water in the compressed gas.

[0035] Reference Figure 1-Figure 3The gas-water separation component 2 includes a conical barrel 21 with a spiral chamber 211, and the conical barrel 21 is fixedly connected to the gas storage tank 11. The conical barrel 21 is respectively provided with an inlet 212, a water outlet 213 and an air outlet 214 connecting the spiral chamber 211 and the outside. The inlet 212 is tangent to the inner wall of the spiral chamber 211, and the inlet 212 is connected to the compression cylinder 1 through a pipeline. The gas storage tank 11 is fixedly connected with a condenser 14, and the condenser 14 is connected with a cooling pipe 141, which is wound around a pipeline connected to the inlet 212 to cool the compressed gas that will enter the conical barrel 21, so that the temperature drops rapidly, so that a large amount of water in the compressed gas is liquefied to form condensed water; the water outlet 213 is connected to the water collecting box 12 pipeline, and the air outlet 214 is connected to the gas storage tank 11 pipeline. The filter element 22 is fixedly connected to the air outlet 214, and the compressed gas enters from the inlet 212 and spirally rotates downward along the inner wall of the spiral chamber 211.

[0036] Reference Figure 1-Figure 3 , the air flow containing water and impurities enters the spiral chamber 211 tangentially through the compression cylinder 1, and spirally rotates downward along the inner wall of the spiral chamber 211. The high-density water and impurities are thrown outward to the inner wall of the spiral chamber 211 under the action of centrifugal force, and sink to the side of the water outlet 213 under the action of gravity, while the low-density gas rotates inward and rises to the side of the gas outlet 214, reducing the possibility of the gas with high water content entering the gas storage tank 11; through gravity separation and centrifugal separation, the water and impurities in the water-containing impurity gas compressed by the compression cylinder 1 are separated, and the water and impurities enter the water collecting box 12, and the gas with less water content enters the gas storage tank 11; the subsequent drainage process only needs to shut down the air compressor, remove the water collecting box 12, dump it and clean it, and then reinstall it to the water outlet 213, which makes the air compressor drainage process safer than the traditional drainage process.

[0037] Reference Figure 1-Figure 3 , a fluid separator 215 is coaxially and fixedly connected in the spiral chamber 211, one end of the fluid separator 215 is fixedly connected to the gas outlet 214, and the compressed gas enters from the inlet 212 and spirally rotates downward along the inner wall of the spiral chamber 211 and the outer wall of the fluid separator 215. By setting obstacles, the compressed gas can be spirally rotated downward, reducing the possibility of chaotic gas flow; and the compressed gas containing water and impurities can enter from the inlet 212 and collide with the outer wall of the fluid separator 215, and the water droplets collide with the outer wall of the fluid separator 215 and are captured, while the compressed gas continues to flow; that is, through the collision separation method, part of the water and impurities in the compressed gas containing water and impurities are separated from the gas, reducing the possibility of gas with a large water content entering the gas storage tank 11.

[0038] Reference Figure 1-Figure 3The gas-water separation component 2 also includes a filter element 22, which is used to filter the gas entering the air outlet 214. The filter element 22 includes a plurality of filter screens 221 and a threaded block 222. The threaded block 222 is threadedly connected to the bottom end of the liquid isolation cylinder 215 in the vertical direction. The threaded block 222 is connected to the liquid isolation cylinder 215. The plurality of filter screens 221 are respectively fixedly connected to the threaded block 222. The plurality of filter screens 221 are evenly distributed along the axial direction of the threaded block 222. The density of the plurality of filter screens 221 is different. The density of the filter screen 221 gradually increases from the side close to the air outlet 214 to the side away from the air outlet 214. Reduce the possibility of water and impurities entering the air outlet 214; when the gas containing a large amount of water enters the liquid isolation tube 215, it collides with the filter 221, so that the filter 221 captures the water on the gas, that is, through the collision separation method, part of the water and impurities in the compressed gas containing water and impurities are separated from the gas, reducing the possibility of gas with a large water content entering the gas storage tank 11.

[0039] Reference Figure 1-Figure 3 A first sinking and floating chamber 216 is provided on one side of the spiral chamber 211 close to the water outlet 213. The bottom side of the first sinking and floating chamber 216 is communicated with the spiral chamber 211. A first floating block 217 is movably connected in the first sinking and floating chamber 216. When there is no water in the first sinking and floating chamber 216, the first floating block 217 abuts against the water outlet 213. The possibility of gas entering the water collecting tank 12 from the water outlet 213 is reduced; the water and impurities separated in the spiral chamber 211 flow into the first sinking and floating chamber 216. When there is a lot of water in the first sinking and floating chamber 216, the first floating block 217 floats to the side away from the water outlet 213, so that the first floating block 217 does not abut against the water outlet 213, and the water in the first sinking and floating chamber 216 can flow out from the water outlet 213. When the water in the first sinking and floating chamber 216 is not enough to make the first floating block 217 float, the water outlet 213 is blocked by the first floating block 217, thereby reducing the possibility of gas entering the water collecting tank 12 from the water outlet 213.

[0040] Reference Figure 1-Figure 4The gas-water separation component 2 also includes a separation box 23 with a separation chamber 231. The separation chamber 231 is gradually farther from the liquid outlet 234 from the side close to the liquid inlet 233 to the side close to the outlet 235. A water flow channel 232 is provided at the bottom of the separation chamber 231. While condensing water toward the liquid outlet 234, the possibility of gas moving toward the liquid outlet 234 is reduced, thereby reducing gas ingress. A drain valve 111 is fixedly connected to the gas storage tank 11, and a liquid inlet 233, a liquid outlet 234 and an outlet 235 which are connected to the outside and the separation chamber 231 are provided on the separation box 23. The liquid inlet 233 is connected to the drain valve 111 pipeline of the gas storage tank 11, the outlet 235 is connected to the inlet 212 pipeline of the conical barrel 21, and the liquid outlet 234 is connected to the water collecting tank 12 pipeline. A plurality of baffles are fixedly connected to the separation chamber 231, and the plurality of baffles 236 are evenly distributed along the length direction of the separation box 23, and two adjacent baffles 236 among the plurality of baffles 236 are respectively staggered.

[0041] Reference Figure 1-Figure 4 , the gas in the gas tank 11 is cooled. When the compressed air passes through the gas tank 11, the high-speed airflow hits the wall of the gas tank 11 to cause convergence, which rapidly reduces the temperature in the gas tank 11, liquefies a large amount of water vapor, and forms condensed water. The drain valve 111 is connected to the pipeline of the inlet 212, so that the gas in the gas tank 11 drives the condensed water into the conical barrel 21, and the condensed water in the gas tank 11 is discharged through the gas-liquid separation component, and the gas is returned to the gas tank 11, which reduces the loss of gas and makes the process of draining the condensed water in the air compressor gas tank 11 safer.

[0042] Reference Figure 1-Figure 4 By setting up a separation box 23, the condensed water and the compressed gas with moisture coming out of the gas storage tank 11 are separated, so that a large amount of condensed water flows toward the outlet 235 through the water flow channel 232; multiple baffles 236 hinder the flow of compressed gas, so that most of the moisture on the compressed gas collides with the baffle 236 and drips down, reducing the possibility that the gas going out of the outlet 235 carries a large amount of moisture.

[0043] Reference Figure 1-Figure 4A second sinking and floating chamber 237 is provided on one side of the separation chamber 231 close to the outlet 235. The bottom side of the second sinking and floating chamber 237 is communicated with the separation chamber 231. A second floating block 238 is movably connected in the second sinking and floating chamber 237. When there is no water in the second sinking and floating chamber 237, the second floating block 238 abuts against the liquid outlet 234. The possibility of gas entering the water collecting tank 12 from the outlet 235 is reduced; the condensed water separated in the separation chamber 231 flows into the second sinking and floating chamber 237. When there is a lot of condensed water in the second sinking and floating chamber 237, the second floating block 238 floats to the side away from the liquid outlet 234, so that the second floating block 238 does not abut against the liquid outlet 234, and the condensed water in the second sinking and floating chamber 237 can flow out from the liquid outlet 234. When the condensed water in the first sinking and floating chamber 216 is not enough to make the second floating block 238 float, the liquid outlet 234 is blocked by the second floating block 238, thereby reducing the possibility of gas entering the water collecting tank 12 from the liquid outlet 234.

[0044] Of course, the above are only typical examples of the present application. In addition, the present application may have many other specific implementation methods. All technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present application.

Claims

1. An oil-free double-cylinder air compressor, comprising a compression cylinder (1) and an air storage tank (11), characterized in that: It also comprises an air-water separation component (2) and a water collecting box (12), wherein the air-water separation component (2) is used to separate the water in the compressed gas, and the air-water separation component (2) comprises a conical barrel (21) with a spiral cavity (211), and the conical barrel (21) is respectively provided with an inlet (212), a water outlet (213) and an air outlet (214) for connecting the spiral cavity (211) and the outside, wherein the inlet (212) is tangent to the inner wall of the spiral cavity (211), the inlet (212) is connected to the compression cylinder (1) through a pipeline, the water collecting box (12) is detachably connected to the water outlet (213), and the air outlet (214) is connected to the air storage tank (11) through a pipeline, and the compressed gas enters from the inlet (212) and spirally rotates downward along the inner wall of the spiral cavity (211); A liquid-isolating cylinder (215) is provided in the spiral cavity (211), one end of the liquid-isolating cylinder (215) is fixedly connected to the gas outlet (214), and the compressed gas enters the inlet (212) and spirally rotates downward along the inner wall of the spiral cavity (211) and the outer wall of the liquid-isolating cylinder (215); A first sinking and floating chamber (216) is provided on one side of the spiral chamber (211) close to the water outlet (213); the bottom side of the first sinking and floating chamber (216) is connected to the spiral chamber (211); a first floating block (217) is movably connected in the first sinking and floating chamber (216); when there is no water in the first sinking and floating chamber (216), the first floating block (217) abuts against the water outlet (213); The gas-water separation component (2) further comprises a filter element (22), the filter element (22) being used to filter the gas entering the gas outlet (214), the filter element (22) comprising a plurality of filter screens (221), the plurality of filter screens (221) being respectively detachably connected to the liquid separator (215), the plurality of filter screens (221) having different densities, the density of the filter screens (221) gradually increasing from the filter screen (221) on the side close to the gas outlet (214) to the filter screen (221) on the side far from the gas outlet (214); The gas storage tank (11) is provided with a drain valve (111), and the drain valve (111) is connected to the inlet (212) pipeline; The gas-water separation component (2) further comprises a separation box (23) with a separation chamber (231); the separation box (23) is provided with a liquid inlet (233), a liquid outlet (234) and an outlet (235) for connecting the outside and the separation chamber (231); the liquid inlet (233) is connected to a pipe of a drain valve (111) of the gas storage tank (11); the outlet (235) is connected to a pipe of an inlet (212) of the conical barrel (21); the liquid outlet (234) is connected to a pipe of a water collecting tank (12); a plurality of baffles are fixedly connected in the separation chamber (231); the plurality of baffles (236) are arranged in a staggered manner; and a water flow channel (232) is provided at the bottom of the separation chamber (231); The separation chamber (231) is gradually farther away from the liquid outlet (234) from the side close to the liquid inlet (233) to the side close to the outlet (235); A second sinking and floating chamber (237) is provided on one side of the separation chamber (231) close to the outlet (235); the bottom side of the second sinking and floating chamber (237) is connected to the separation chamber (231); a second floating block (238) is movably connected inside the second sinking and floating chamber (237); when there is no water in the second sinking and floating chamber (237), the second floating block (238) abuts against the liquid outlet (234).

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