Horizontal integrated screw air compressor

Abstract

The horizontal type integrated screw air compressor comprises a motor, a screw main machine, an air filter dust removal assembly and an oil-gas separation mechanism, the tail end of the screw main machine is connected with the motor, an air inlet in the top of the screw main machine is connected with the air filter dust removal assembly, an air outlet is formed in the bottom face of the front portion of the screw main machine, and the air outlet is connected with the oil-gas separation mechanism; the oil-gas separation mechanism comprises an oil-gas separation tank and an oil separation core assembly, the oil-gas separation tank is transversely placed below the screw main machine, a gas outlet of the screw main machine is connected to the oil-gas separation tank through a first supporting pipe, the top of the oil-gas separation tank is further connected with the oil separation core assembly, and the oil separation core assembly is connected with the screw main machine through a secondary oil return pipe; the air filtering and dust removing equipment is arranged in the air purifier, air can be filtered, dust particles are prevented from polluting the unit, obtained compressed air is cleaner, and the integrated machine body has the advantages of being small in size, light in weight, small in occupied area and suitable for being used movably.

Description

Technical Field

[0001] The utility model belongs to the technical field of air compressors, and in particular relates to a horizontal integrated screw air compressor. Background Art

[0002] Air compressors are used in many industries such as petrochemicals, drilling, and metallurgy. They can convert mechanical energy into gas pressure and provide gas power for pneumatic tools. The principle of screw compressors is to make air enter from the suction port through the rotation of the twin screws, pressurize the gas through the rotation of the screws, and then discharge it from the exhaust port. For oil-injected screw compressors, lubricating oil must be sprayed into the screws during the rotation process. The injected lubricating oil forms an oil film between the screws to play the role of sealing, lubrication, and cooling. There are oil and gas components in the compressed air obtained in the end. The oil and compressed air must be separated to obtain clean compressed air. In actual use, since there are dust particles in the air, directly inhaling air will inevitably inhale a lot of dust. Therefore, the oil-liquid mixed gas obtained in the end is also mixed with dust particles. When the lubricating oil is separated and recovered, the oil has been contaminated by dust and cannot be recycled, and the equipment use cost is high. In addition, due to the existence of oil-gas separation auxiliary equipment, the existing air compressor occupies a large space and has a large operating noise. It is not suitable as a mobile compressor and can only be used in a fixed manner. Summary of the invention

[0003] In view of the above problems and technical requirements, the utility model provides a horizontal integrated screw air compressor, which is equipped with an air filtering and dust removal device, which can filter the air to prevent dust particles from contaminating the unit, so that the compressed air obtained is cleaner, and the integrated body has the characteristics of small size, light weight and small footprint, and is suitable for mobile use.

[0004] The technical scheme of the utility model is as follows: a horizontal integrated screw air compressor, comprising a motor, a screw main unit, an air filter dust removal component and an oil-gas separation mechanism, wherein the tail end of the screw main unit is connected to the motor, the air inlet at the top of the screw main unit is connected to the air filter dust removal component, an air outlet is provided on the bottom surface of the front part of the screw main unit, and the air outlet is connected to the oil-gas separation mechanism; the oil-gas separation mechanism comprises an oil-gas separation tank and an oil separation core component, the oil-gas separation tank is placed horizontally below the screw main unit, the air outlet of the screw main unit is connected to the oil-gas separation tank through a first support pipe, and the oil-gas separation An oil separator core assembly is also connected to the top of the tank, and the oil separator core assembly is connected to the screw main unit through a secondary oil return pipe; the motor drives the screw main unit to rotate, and the air enters the screw main unit after being filtered by the air filter dust removal assembly, and the compressed mixed oil and gas enter the oil-gas separation tank through the first support pipe. After the oil-gas separation tank separates the mixed oil and gas for the first time, the mixed oil and gas enter the oil separator core assembly, and the oil separator core assembly further filters and separates the mixed oil and gas, and the filtered compressed gas is supplied to the outside, and the separated lubricating oil returns to the screw main unit along the secondary oil return pipe. In the above scheme, the air filter dust removal assembly can filter out solid particles in the air and provide clean air to the screw main unit. The compressed oil and gas sprayed from the screw main unit are first filled into the oil-gas separation tank, and large oil droplets fall and settle in the oil-gas separation tank. Tiny oil droplets enter the oil separator core assembly together with the compressed gas, and the oil separator core assembly further filters the remaining small oil droplets to obtain clean compressed gas.

[0005] Furthermore, the air filter dust removal assembly includes a filter housing cover, a filter element, an air intake separation chamber and an air intake diverter pipe. The front end of the filter housing cover is connected to the air intake of the screw main unit. The filter element is installed in the filter housing cover. The rear end of the filter housing cover is connected to the air intake separation chamber by a buckle. The air intake separation chamber is cylindrical. A plurality of air intake diverter pipes are installed in the air intake separation chamber. The air intake diverter pipes are close to each other, and all air intake diverter pipes are arranged axially. An end cover is installed at the other end of the air intake separation chamber. The end cover is provided with a plurality of air intake holes. Each air intake hole corresponds to an air intake diverter pipe. The air intake diverter pipe is embedded in the air intake hole. The air enters the filter housing cover through the plurality of air intake diverter pipes. The air flows into the screw main unit after being filtered by the filter element. Multiple air intake diverter pipes are set. After the gas enters, the air can be evenly divided by the plurality of air intake diverter pipes. The air forms a plurality of small air flows and flows backward, which can obtain a better filtering effect and extend the service life of the filter element.

[0006] Furthermore, a dust removal nozzle is provided on the peripheral surface of the air intake separation chamber, and the dust removal nozzle and the air intake separation chamber are detachably connected. After removing the dust removal nozzle, the air intake separation chamber can be cleaned to clean the dust left in the air intake separation chamber, thereby preventing dust accumulation from affecting the filtering effect.

[0007] Furthermore, the motor is an oil-cooled motor, which includes a motor housing, a stator and a rotor. An oil inlet and an oil outlet are provided on the circumferential surface of the motor housing. The stator and the rotor are installed in the motor housing in sequence. An oil drain is also provided at the bottom of the rear end cover of the motor housing. The cooling oil circulates inside the motor housing through the oil inlet and the oil outlet respectively to cool the inside of the motor. The oil drain can discharge waste oil.

[0008] Furthermore, an L-shaped support frame is provided below the oil-cooling motor, and the L-shaped support frame includes a vertical plate and a horizontal plate. One side of the vertical plate of the L-shaped support frame is connected to the oil-cooling motor, and the other side is connected to the screw main unit. The oil-cooling motor and the screw main unit are connected through the vertical plate for transmission, and the front end of the horizontal plate is fixedly connected to the horizontal oil-gas separation tank. The L-shaped support frame connects and fixes the oil-cooling motor, the screw main unit and the oil-gas separation tank together to achieve the purpose of integrating the whole machine.

[0009] Furthermore, the oil separator core assembly includes a second support tube, a valve seat, a filter rod and an oil separator core. The second support tube is vertically connected to the oil-gas separation tank, the top of the second support tube is connected to the valve seat, the side of the valve seat is connected to the pressure valve, the filter rod is installed on the valve seat, and the oil separator core is sealed on the valve seat.

[0010] Furthermore, an air intake valve is provided between the filter element housing cover and the air intake of the screw main unit.

[0011] Furthermore, a secondary oil return pipe and a unloading pipe are provided on the side of the valve seat, the secondary oil return pipe leads to the screw main unit, and the unloading pipe leads to the air intake valve.

[0012] Compressed air with tiny oil particles enters the oil separator through the second support pipe and filter rod, and the oil gradually forms large oil droplets and falls back into the valve seat. The lubricating oil separated in the oil separator core is led to the lubricating oil cavity in the screw main unit through the secondary oil return pipe, and the unloading pipe leads to the unloading channel of the intake valve to unload the internal air pressure of the oil-gas separation tank.

[0013] Compared with the prior art, the beneficial effects of the utility model are: 1) The air compressor of the utility model is an integrated device, which occupies a small area, saves space, can be carried as a whole, and is suitable for mobile use. The air filter dust removal component and the oil separation core component in the compressor can be freely disassembled and easy to maintain and repair; 2) The air filter dust removal component is installed at the air inlet of the screw main unit, which can more effectively separate the dust particles in the air, avoid dust from entering the screw main unit to contaminate the lubricating oil, corrode the screw main unit, and reduce the difficulty of separating the lubricating oil; 3) A plurality of air intake diversion pipes are arranged in the air filter dust removal component, which can make the air intake more uniform and increase the service life of the filter element; 4) An oil-cooled motor is used to power the screw main unit. Compared with an air-cooled motor, it enhances the anti-interference ability and has better stability, while reducing the noise of the motor. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a three-dimensional structural diagram of the air compressor of the utility model;

[0015] Figure 2 This is a back three-dimensional structural diagram of the air compressor of the utility model;

[0016] Figure 3 This is the overall structural diagram of the hollow filter dust removal component of the utility model;

[0017] Figure 4 It is the exploded structure of the hollow filter dust removal component of the utility model;

[0018] Figure 5 This is the overall structure diagram of the motor in the utility model;

[0019] Figure 6 It is a cross-sectional structure of the motor in the utility model;

[0020] Marked in the figure are: motor 1, motor housing 11, oil inlet 111, oil outlet 112, stator 12, rotor 13, oil discharge port 14, screw main unit 2, air intake valve 21, air filter dust removal assembly 3, filter element housing cover 31, filter element 32, air intake separation chamber 33, dust removal nozzle 331, air intake diverter pipe 34, end cover 35, air intake hole 351, oil-gas separation mechanism 4, oil-gas separation tank 5, first support pipe 51, second support pipe 52, oil separator core assembly 6, valve seat 61, filter rod 62, oil separator core 63, secondary oil return pipe 65, unloading pipe 66, L-shaped support frame 7, vertical plate 71, and horizontal plate 72. DETAILED DESCRIPTION

[0021] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0022] The horizontal integrated screw air compressor comprises a motor 1, a screw main unit 2, an air filter and dust removal component 3 and an oil-gas separation mechanism 4. The tail end of the screw main unit 2 is connected to the motor 1, the air inlet at the top of the screw main unit 2 is connected to the air filter and dust removal component 3, and the bottom surface of the front part of the screw main unit 2 is provided with an air outlet, which is connected to the oil-gas separation mechanism 4.

[0023] The motor 1 is an oil-cooled motor, comprising a motor housing 11, a stator 12 and a rotor 13. An oil inlet 111 and an oil outlet 112 are provided on the circumferential surface of the motor housing 11. The stator 12 and the rotor 13 are sequentially installed in the motor housing 11. An oil drain 14 is also provided at the bottom of the rear end cover of the motor housing 11. Cooling oil circulates inside the motor housing 11 through the oil inlet 111 and the oil outlet 112 respectively to cool the inside of the motor. The oil drain 14 can discharge waste oil.

[0024] The air filter dust removal assembly 3 includes a filter shell cover 31, a filter 32, an air intake separation chamber 33 and an air intake diversion pipe 34. The front end of the filter shell cover 31 is connected to the air inlet of the screw main unit 2, and an air intake valve 21 is also provided between the filter shell cover 31 and the air inlet of the screw main unit. The filter element 32 is installed in the filter element housing cover 31. The tail end of the filter element housing cover 31 is connected to the air inlet separation chamber 33 by a buckle. The air inlet separation chamber 33 is cylindrical. A plurality of air inlet manifolds 34 are installed in the air inlet separation chamber 33. The air inlet manifolds 34 are close to each other and all of them are arranged axially. An end cover 35 is installed at the other end of the air inlet separation chamber 33. The end cover 35 is provided with a plurality of air inlet holes 351. Each air inlet hole 351 corresponds to an air inlet manifold 34. The air inlet manifold 34 is embedded in the air inlet hole 351. The air enters the filter element housing cover 31 through the plurality of air inlet manifolds 34. The air flows into the screw main unit 2 after being filtered by the filter element 32. A dust removal nozzle 331 is provided on the circumference of the air inlet separation chamber 33. The dust removal nozzle 331 and the air inlet separation chamber 33 are detachably connected. A plurality of air intake manifolds 34 are provided. After the gas enters, the air can be evenly divided by the plurality of air intake manifolds 34. The air forms a plurality of small air flows and flows backwards, which can obtain a better filtering effect and extend the service life of the filter element 32. After removing the dust removal nozzle 331, the air intake separation chamber 33 can be cleaned to clean the dust left in the air intake separation chamber 33 to prevent dust accumulation from affecting the filtering effect.

[0025] The oil-gas separation mechanism 4 includes an oil-gas separation tank 5 and an oil separation core assembly 6. The oil-gas separation tank 5 is placed horizontally below the screw main unit 2. The gas outlet of the screw main unit 2 is connected to the oil-gas separation tank 5 through the first support pipe 51. The top of the oil-gas separation tank 5 is also connected to the oil separation core assembly 6. The oil separation core assembly 6 is connected to the screw main unit 2 through the secondary oil return pipe 65. The oil separation core assembly 6 includes a second support pipe 52, a valve seat 61, a filter rod 62 and an oil separation core 63. The second support pipe 52 is vertically connected to the oil-gas separation tank 5. The top of the second support pipe 52 is connected to the valve seat 61. The side of the valve seat 61 is connected to the pressure valve 64. The filter rod 62 is installed on the valve seat 61. The oil separation core 63 is sealed on the valve seat 61. A secondary oil return pipe 65 and a discharge pipe 66 are provided on the side of the valve seat. The secondary oil return pipe 65 leads to the screw main unit, and the discharge pipe 66 leads to the intake valve 21.

[0026] An L-shaped support frame 7 is provided below the oil-cooling motor, and the L-shaped support frame 7 includes a vertical plate 71 and a horizontal plate 72. One side of the vertical plate 71 of the L-shaped support frame 7 is connected to the oil-cooling motor 1, and the other side is connected to the screw main unit 2. The oil-cooling motor 1 and the screw main unit 2 are transmission-connected through the vertical plate 71, and the front end of the horizontal plate 72 is fixedly connected to the horizontal oil-gas separation tank 5. The L-shaped support frame 7 connects and fixes the oil-cooling motor 1, the screw main unit 2 and the oil-gas separation tank 5 together, so as to achieve the purpose of integrating the whole machine.

[0027] The action process of the utility model is as follows: the oil-cooled motor 1 drives the screw main unit 2 to rotate, and the air enters the screw main unit 2 after being filtered by the air filter dust removal component 3. After the air enters the air intake separation chamber 33, the air can be evenly divided by multiple air intake diversion pipes 34. After the air forms multiple small air flows, it flows backward and is filtered by the filter element 32. The dust remains in the air intake separation chamber 33. The clean air enters the screw main unit 2 through the air intake valve 21. After removing the dust removal nozzle 331, the dust in the air intake separation chamber 33 can be cleaned to avoid dust accumulation. The mixed oil and gas enter the oil-gas separation tank 5 through the first support pipe 51. After the oil-gas separation tank 5 separates the mixed oil and gas for the first time, the compressed air with tiny oil particles enters the oil separation core 63 through the second support pipe 52 and the filter rod 62. The oil gradually forms large oil droplets and falls back into the valve seat 61. It is re-input into the screw main unit 2 along the two secondary oil return pipes 65. The clean compressed gas is discharged through the pressure valve 64 and provided to the user. The internal air pressure of the oil separation core 63 and the oil-gas separation tank 5 is connected to the unloading channel of the intake valve 21 through the unloading pipe 66 to relieve the pressure.

[0028] The above are only several preferred embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any changes and substitutions that can be easily thought of by any technician familiar with the technical field within the technical scope disclosed by the present invention 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. Horizontal integrated screw air compressor, characterized by: The invention comprises a motor, a screw main unit, an air filter and dust removal component and an oil-gas separation mechanism, wherein the tail end of the screw main unit is connected to the motor, the air inlet at the top of the screw main unit is connected to the air filter and dust removal component, the bottom surface of the front part of the screw main unit is provided with an air outlet, and the air outlet is connected to the oil-gas separation mechanism; the oil-gas separation mechanism comprises an oil-gas separation tank and an oil separation core component, the oil-gas separation tank is horizontally placed below the screw main unit, the air outlet of the screw main unit is connected to the oil-gas separation tank through a first supporting pipe, the top of the oil-gas separation tank is also connected to an oil separation core component, and the oil separation core component is connected to the screw main unit through a secondary oil return pipe; the motor drives the screw main unit to rotate, the air enters the screw main unit after being filtered by the air filter and dust removal component, the compressed mixed oil and gas enters the oil-gas separation tank through the first supporting pipe, after the oil-gas separation tank separates the mixed oil and gas for the first time, the mixed oil and gas enter the oil separation core component, the oil separation core component further filters and separates the mixed oil and gas, the filtered compressed gas is supplied to the outside, and the separated lubricating oil returns to the screw main unit along the secondary oil return pipe.

2. The horizontal integrated screw air compressor according to claim 1, characterized in that: The air filter dust removal assembly includes a filter element outer shell cover, a filter element, an air intake separation chamber and an air intake diverter pipe. The front end of one end of the filter element outer shell cover is connected to the air inlet of the screw main unit. The filter element is installed in the filter element outer shell cover. The rear end of the filter element outer shell cover is connected to the air intake separation chamber by a snap buckle. The air intake separation chamber is cylindrical. A plurality of air intake diverter pipes are installed in the air intake separation chamber. The air intake diverter pipes are close to each other, and all the air intake diverter pipes are arranged axially. An end cover is installed at the other end of the air intake separation chamber. A plurality of air intake holes are provided on the end cover. Each air intake hole corresponds to an air intake diverter pipe. The air intake diverter pipe is embedded in the air intake hole. Air enters the filter element outer shell cover through the plurality of air intake diverter pipes. The air flows into the screw main unit after being filtered by the filter element.

3. The horizontal integrated screw air compressor according to claim 2, characterized in that: A dust removal nozzle is arranged on the peripheral surface of the air intake separation chamber, and the dust removal nozzle and the air intake separation chamber are detachably connected.

4. The horizontal integrated screw air compressor according to claim 3, characterized in that: The motor is an oil-cooled motor, which includes a motor housing, a stator and a rotor. An oil inlet and an oil outlet are arranged on the circumferential surface of the motor housing, and the stator and the rotor are sequentially installed in the motor housing. An oil drain is also arranged at the bottom of the rear end cover of the motor housing. Cooling oil circulates inside the motor housing through the oil inlet and the oil outlet respectively to cool the inside of the motor, and the oil drain can discharge waste oil.

5. The horizontal integrated screw air compressor according to claim 4, characterized in that: An L-shaped support frame is provided under the oil-cooling motor, and the L-shaped support frame includes a vertical plate and a horizontal plate. One side of the vertical plate of the L-shaped support frame is connected to the oil-cooling motor, and the other side is connected to the screw main unit. The oil-cooling motor and the screw main unit are transmission-connected through the vertical plate, and the front end of the horizontal plate is fixedly connected to the horizontal oil-gas separation tank.

6. The horizontal integrated screw air compressor according to claim 5, characterized in that: The oil separator core assembly includes a second support tube, a valve seat, a filter rod and an oil separator core. The second support tube is vertically connected to the oil-gas separation tank, the top of the second support tube is connected to the valve seat, the side of the valve seat is connected to the pressure valve, the filter rod is installed on the valve seat, and the oil separator core is sealed on the valve seat.

7. The horizontal integrated screw air compressor according to claim 2, characterized in that: An air inlet valve is also arranged between the filter element housing cover and the air inlet of the screw main engine.

8. The horizontal integrated screw air compressor according to claim 6, characterized in that: A secondary oil return pipe and a relief pipe are arranged on the side of the valve seat. The secondary oil return pipe leads to the screw main unit, and the relief pipe leads to the air inlet valve.

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