Protective magnetic suspension air compressor

Abstract

The utility model relates to the technical field of air compressors, in particular to a protection type magnetic suspension air compressor which comprises an air compression cabin and an electric control cabin arranged in a machine box, and aims to avoid the situation that when the air compressor is started, air pressure in a main air pipe is too small, so that exhausted air is small in pressure and cannot be exhausted, and pressure building and surging are caused. The secondary air pipe communicated with the outside is arranged on the side wall of the main air pipe, the electromagnetic valve is controlled to open the secondary air pipe firstly during starting, the electromagnetic valve is a one-way electromagnetic valve, the secondary air pipe is utilized, exhausted air can be conveniently exhausted from the secondary air pipe, the situation that the air cannot be exhausted from the main air pipe due to small pressure is avoided, and the secondary air pipe is closed after the air compressor reaches the preset rotating speed, so that the air compressor is more convenient to use. And during shutdown, in order to avoid the situation that the air flows back to the motor due to the fact that the pressure is too large, the electromagnetic valve is opened after the air compressor is reduced to the preset rotating speed, the recharged air can be discharged from the secondary air pipe, and therefore the situation that an impeller of the air compressor is damaged by the recharged air is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to air compressor technology field especially relates to a protection type magnetic suspension air compressor. BACKGROUND

[0002] With the development of society and the progress of technology, the application of magnetic suspension air compressor in industry is more and more widely, and the magnetic suspension air compressor is a pressure generating device of compressed air, and carries out the repeated work such as air suction, air compression and air exhaust, in the actual application process, due to the small pressure in the early stage when the air compressor is operated, the pressure holding and surge condition is prone to appear, which causes the damage of equipment and the abnormal operation, secondly, when the air compressor is shut down, the air is back to the motor due to the excessive pressure in the air pipe, which causes the damage of impeller, therefore, a protection type magnetic suspension air compressor is needed. SUMMARY

[0003] In view of the above-mentioned defects of the prior art, the utility model aims at providing a protection type magnetic suspension air compressor, which solves the problem of damage of the air compressor caused by the unbalanced pressure in the air pipe.

[0004] To achieve the above-mentioned purpose and other related purposes, the utility model provides the following technical scheme:

[0005] A protection type magnetic suspension air compressor, comprising:

[0006] A machine case is provided with an air compression cabin and an electric control cabin in the machine case, and an electric control partition plate is arranged between the air compression cabin and the electric control cabin to separate the air compression cabin and the electric control cabin.

[0007] An air compressor is arranged in the air compression cabin, a main air pipe is arranged on the air compressor and communicates with the outside, a secondary air pipe is arranged on the side wall of the main air pipe and communicates with the outside, an electromagnetic valve is arranged on the secondary air pipe to control the opening and closing of the secondary air pipe, and a sound absorbing box is arranged on the top of the machine case and connected between the output end of the secondary air pipe and the outside.

[0008] The above-mentioned technical scheme is realized, the electric control partition plate is arranged to separate the air compression cabin and the electric control cabin, which can improve the use stability of the electric control elements in the electric control cabin, reduce the vibration and noise generated by the operation of the air compressor, and reduce the influence on the electric control elements in the electric control cabin.

[0009] In order to avoid the situation that the air pressure in the main air pipe is too small when starting, the gas pressure to be discharged is small, the gas cannot be discharged, and the pressure is choked and surges, a secondary air pipe which communicates with the outside is arranged on the side wall of the main air pipe, and the electromagnetic valve is opened to control the secondary air pipe when starting, the electromagnetic valve is a one-way electromagnetic valve, the gas can be conveniently discharged from the secondary air pipe, the pressure is avoided to be too small to be discharged from the main air pipe, the secondary air pipe is closed after the air compressor reaches the predetermined rotating speed, the gas is discharged from the main air pipe, and when the air compressor is shut down, in order to avoid that the pressure is too large to cause the gas to be filled back to the motor, the electromagnetic valve is opened after the air compressor is reduced to the predetermined rotating speed, so that the backfilled gas can be discharged from the secondary air pipe, thereby avoiding that the backfilled gas damages the impeller of the air compressor.

[0010] In an embodiment of the present application, the main air pipe is a horn-shaped air pipe, and the radial dimension of the secondary air pipe is smaller than the minimum radial dimension of the main air pipe.

[0011] The above technical scheme is realized, the main air pipe is a horn-shaped air pipe, the stability of the gas discharged from the main air pipe when the air compressor is running at high speed is improved, the radial dimension of the secondary air pipe is smaller than the minimum radial dimension of the main air pipe, and the ventilation effect of the secondary air pipe is improved.

[0012] In an embodiment of the present application, a plurality of groups of sound-absorbing plates which are parallel to each other are arranged in the sound-absorbing box, a sound-absorbing pipe which communicates with the sound-absorbing plates is further arranged in the sound-absorbing box, and sound-absorbing holes are arranged on the pipe wall of the sound-absorbing pipe.

[0013] The above technical scheme is realized, the plurality of groups of sound-absorbing plates which are parallel to each other are arranged in the sound-absorbing box, the noise influence of the gas discharged from the secondary air pipe is reduced, the sound-absorbing pipe provides a guide for the gas, the contact stability of the gas flow in the sound-absorbing box and the sound-absorbing plates is improved, the sound-absorbing holes arranged on the pipe wall of the sound-absorbing pipe can uniformly disperse the gas flow and also achieve a noise reduction effect.

[0014] In an embodiment of the present application, a secondary air outlet is arranged on the top of the case, and a dustproof grille is arranged at the secondary air outlet.

[0015] The above technical scheme is realized, the dustproof grille arranged at the secondary air outlet can prevent foreign matters from entering the sound-absorbing box and affecting the use of the sound-absorbing box.

[0016] In an embodiment of the present application, two groups of sound-absorbing pipes are arranged in the sound-absorbing box, and the two groups of sound-absorbing pipes are parallel to each other.

[0017] The above technical scheme is realized, the two groups of sound-absorbing pipes can further improve the uniformity of the contact of the gas flow in the sound-absorbing box and the sound-absorbing plates, and ensure the flow reliability of the gas flow.

[0018] In one embodiment of the present invention, a partition sound-absorbing plate is provided on the side of the electrical control partition closest to the air compressor chamber, a partition through hole is provided on the electrical control partition below the partition sound-absorbing plate, and an electrical control grille is provided on the side of the electrical control compartment away from the air compressor chamber.

[0019] To achieve the above technical solution, a sound-absorbing plate is installed on the side of the electrical control partition near the air compressor compartment, which can reduce the impact of noise in the air compressor compartment on the electrical control compartment. By setting through holes in the partition, the smooth flow of gas in the air compressor compartment and the electrical control compartment can be ensured. The electrical control grille can facilitate the entry of external debris into the electrical control compartment.

[0020] In one embodiment of this utility model, the secondary air duct is horizontally arranged on the side wall of the main air duct.

[0021] To achieve the above technical solution, the secondary air duct is horizontally arranged on the side wall of the main air duct, which ensures the smooth flow of gas in the secondary air duct and guarantees the gas guiding effect.

[0022] As described above, the protective magnetic levitation air compressor of this utility model has the following beneficial effects: by setting an electrical control partition to separate the air compressor compartment and the electrical control compartment, the stability of the electrical control components in the electrical control compartment can be improved, and the vibration and noise generated during the operation of the air compressor can be reduced, thus reducing the impact on the electrical control components in the electrical control compartment.

[0023] To prevent insufficient air pressure in the main duct during startup, which could lead to insufficient exhaust pressure and cause pressure buildup and surging, a secondary duct is installed on the side wall of the main duct, connecting to the outside. During startup, a one-way solenoid valve is used to open the secondary duct, allowing for easy exhaust of gas and preventing insufficient pressure from the main duct. Once the compressor reaches the predetermined speed, the secondary duct is closed, and gas exits through the main duct. During shutdown, to prevent excessive pressure from causing gas to flow back into the motor, the solenoid valve is opened after the compressor reaches the predetermined speed, allowing any backflowing gas to exit through the secondary duct and preventing damage to the compressor impeller. Attached Figure Description

[0024] Fig. 1 The diagram shown is a structural schematic of the protective magnetic levitation air compressor disclosed in the embodiments of this utility model.

[0025] Fig. 2 The diagram shown is a schematic diagram of the secondary air duct structure of the protective magnetic levitation air compressor disclosed in this embodiment of the present invention.

[0026] Fig. 3 The diagram shown is a schematic of the partition sound-absorbing plate structure of the protective magnetic levitation air compressor disclosed in this embodiment of the present invention.

[0027] Fig. 4 The utility model discloses a protection type magnetic suspension air compressor shown in the air compressor structure schematic diagram of the embodiment of the utility model.

[0028] Element number explanation

[0029] 1, case; 2, air compression cabin; 3, electric control cabin; 4, electric control partition; 5, air compressor; 6, main air pipe; 7, secondary air pipe; 8, electromagnetic valve; 9, sound absorbing plate; 10, sound absorbing pipe; 11, secondary air outlet; 12, dustproof grille; 13, partition sound absorbing plate; 14, electric control grille; 15, sound absorbing box. Specific implementation

[0030] The following specific embodiments illustrate the implementation of the utility model, and those skilled in the art can easily understand other advantages and effects of the utility model from the disclosed content of the specification. It should be noted that the following examples and features in the examples can be combined with each other without conflict.

[0031] Please refer to Figs. 1 to 4 The utility model provides a protection type magnetic suspension air compressor, including setting up air compression cabin 2 and electric control cabin 3 in case 1, be provided with electric control partition 4 between air compression cabin 2 and electric control cabin 3 to separate air compression cabin 2 and electric control cabin 3, be provided with air compressor 5 in air compression cabin 2, be provided with the main air pipe 6 of intercommunication outside on air compressor 5, be provided with the secondary air pipe 7 of intercommunication outside on the lateral wall of main air pipe 6, be provided with electromagnetic valve 8 on secondary air pipe 7 to control the switch of secondary air pipe 7, be provided with sound absorbing box 15 on the top of case 1, sound absorbing box 15 connects the output end of secondary air pipe 7 and outside.

[0032] By setting up electric control partition 4 to separate air compression cabin 2 and electric control cabin 3, the use stability of electric control element in electric control cabin 3 can be improved, and the influence of vibration and noise generated by air compressor 5 operation on electric control element in electric control cabin 3 is reduced.

[0033] In order to avoid that the air pressure in main air pipe 6 is too small when starting, leading to that the gas pressure to be discharged is small and cannot be discharged, resulting in the situation of pressure holding and surge, by setting up secondary air pipe 7 of intercommunication outside on the lateral wall of main air pipe 6, controlling electromagnetic valve 8 to open secondary air pipe 7 when starting, the electromagnetic valve 8 here is one-way electromagnetic valve 8, using secondary air pipe 7, the gas can be conveniently discharged from secondary air pipe 7, avoiding that the pressure is small and cannot be discharged from main air pipe 6, closing secondary air pipe 7 after air compressor 5 reaches the predetermined speed, and the gas is discharged from main air pipe 6, in order to avoid that the gas is filled back to the motor when shutting down, opening electromagnetic valve 8 after air compressor 5 drops to the predetermined speed, so that the backfilled gas can be discharged from secondary air pipe 7, thereby avoiding that the backfilled gas damages the impeller of air compressor 5.

[0034] The main air pipe 6 is a horn-shaped air pipe, and the secondary air pipe 7 is arranged to have a radial size smaller than the minimum radial size of the main air pipe 6. By arranging the main air pipe 6 to be a horn-shaped air pipe, the stability of the gas discharge in the main air pipe 6 can be improved when the air compressor 5 is running at a high speed. By arranging the secondary air pipe 7 to have a radial size smaller than the minimum radial size of the main air pipe 6, the ventilation effect of the secondary air pipe 7 can be improved.

[0035] A plurality of groups of sound-absorbing plates 9 are arranged in parallel in the sound-absorbing box 15. A sound-absorbing pipe 10 is arranged in the sound-absorbing box 15 and communicates with each sound-absorbing plate 9. The pipe wall of the sound-absorbing pipe 10 is provided with sound-absorbing holes. By arranging a plurality of groups of sound-absorbing plates 9 in the sound-absorbing box 15, the noise effect of the gas discharged from the secondary air pipe 7 can be reduced. The arrangement of the sound-absorbing pipe 10 can guide the gas and improve the stability of the gas flow in the sound-absorbing box 15 and the contact with the sound-absorbing plates 9. The pipe wall of the sound-absorbing pipe 10 is provided with sound-absorbing holes, which can uniformly disperse the gas flow and achieve a noise reduction effect.

[0036] The top of the machine box 1 is provided with a secondary air outlet 11. A dustproof grille 12 is arranged at the secondary air outlet 11. By arranging the dustproof grille 12 at the secondary air outlet 11, foreign matter from the outside can be prevented from entering the sound-absorbing box 15 and affecting the use of the sound-absorbing box 15.

[0037] Two groups of sound-absorbing pipes 10 are arranged in the sound-absorbing box 15 and are parallel to each other. By arranging two groups of sound-absorbing pipes 10, the uniformity of the gas flow in the sound-absorbing box 15 and the contact with the sound-absorbing plates 9 can be further improved, and the flow reliability of the gas flow can be ensured.

[0038] A sound-absorbing plate 13 is arranged on the electric control partition plate 4 close to the air compression cabin 2. A partition hole is arranged on the electric control partition plate 4 below the sound-absorbing plate 13. An electric control grille 14 is arranged on the electric control cabin 3 away from the air compression cabin 2. By arranging the sound-absorbing plate 13 on the electric control partition plate 4 close to the air compression cabin 2, the influence of the noise in the air compression cabin 2 on the electric control cabin 3 can be reduced. By arranging the partition hole, the flow of the gas in the air compression cabin 2 and the electric control cabin 3 can be ensured to be unobstructed. The electric control grille 14 can prevent foreign matter from the outside from entering the electric control cabin 3.

[0039] The side wall part of the secondary air pipe 7 connected to the main air pipe 6 is arranged horizontally. By arranging the side wall part of the secondary air pipe 7 connected to the main air pipe 6 horizontally, the flow of the gas in the secondary air pipe 7 can be ensured to be unobstructed, and the flow guiding effect of the gas can be ensured.

[0040] The utility model discloses a control partition separates air compression cabin and electric control cabin, can improve the use stability of electric control element in electric control cabin, reduce the vibration and noise of air compressor operation, the influence of electric control element in electric control cabin, in order to avoid when starting, the air pressure in main air pipe is too small, leads to the gas pressure that should be discharged to be small, cannot be discharged, leads to the condition of pressure hold surge, by setting up the secondary air pipe of communicating outside on the lateral wall of main air pipe, first control solenoid valve to open secondary air pipe when starting, the solenoid valve here is one -way solenoid valve, utilizes secondary air pipe, can conveniently discharged gas from secondary air pipe, avoids small pressure and cannot be discharged from main air pipe, after air compressor reaches the predetermined speed, closes secondary air pipe, and gas is discharged from main air pipe, when shutting down, in order to avoid the gas of pressure too big and leads to the backfill of motor, after air compressor drops to the predetermined speed, opens solenoid valve, makes backfill gas to be discharged from secondary air pipe, thereby avoids backfill gas and damages the impeller of air compressor.

[0041] The above embodiments only exemplarily illustrate the principle and effects of the utility model, and are not used to limit the utility model. All equivalent modifications or changes completed by those skilled in the art without departing from the spirit and technical thought disclosed by the utility model should still be covered by the claims of the utility model.

Claims

1. A protective magnetic levitation air compressor, characterized by, Include: The cabinet, air pressure cabin and electric control cabin are arranged in the cabinet, and an electric control partition is arranged between the air pressure cabin and the electric control cabin to separate the air pressure cabin and the electric control cabin; The air pressure cabin is provided with an air compressor, and a main air pipe connected with the outside is arranged on the air compressor. A secondary air pipe connected with the outside is arranged on the side wall of the main air pipe. An electromagnetic valve is arranged on the secondary air pipe to control the opening and closing of the secondary air pipe. A sound absorbing box is arranged on the top of the cabinet, and the sound absorbing box is connected between the output end of the secondary air pipe and the outside.

2. The protective magnetic levitation air compressor of claim 1, wherein: The main air pipe is a horn-shaped air pipe, and the radial size of the secondary air pipe is smaller than the minimum radial size of the main air pipe.

3. The protective magnetic levitation air compressor of claim 1, wherein: A plurality of groups of sound absorbing plates parallel to each other are arranged in the sound absorbing box, and a sound absorbing pipe connected with each sound absorbing plate is further arranged in the sound absorbing box. Sound absorbing holes are arranged on the pipe wall of the sound absorbing pipe.

4. The protective magnetic levitation air compressor of claim 1, wherein: A secondary air outlet is arranged on the top of the cabinet, and a dustproof grille is arranged at the secondary air outlet.

5. The protective magnetic levitation air compressor of claim 3, wherein: The sound absorbing pipe is arranged in two groups in the sound absorbing box, and the two groups of sound absorbing pipes are parallel to each other.

6. The protective magnetic levitation air compressor of claim 1, wherein: A partition sound absorbing plate is arranged on the electric control partition close to the air pressure cabin. A partition through hole is arranged on the electric control partition below the partition sound absorbing plate. An electric control grille is arranged on the side of the electric control cabin away from the air pressure cabin.

7. The protective magnetic levitation air compressor of claim 1, wherein: The secondary air pipe is arranged horizontally on the side wall of the main air pipe.

Images