Exhaust mechanism for screw compressor

Abstract

The invention relates to the technical field of screw compressor components, and particularly discloses an exhaust mechanism for a screw compressor, the exhaust mechanism comprises a screw compressor body, the screw compressor body comprises a shell and a ventilation pipeline, the ventilation pipeline is connected with an exhaust assembly, an exhaust pipeline is inserted in the exhaust assembly, and the exhaust pipeline is communicated with the ventilation pipeline; the exhaust assembly comprises an upper connecting pipe; a lower connecting pipe is installed on the side, away from the upper connecting pipe, of the middle connecting pipe and arranged on the outer side of the exhaust pipeline in a sleeving mode. A power unit in the combined unit can drive a push-pull plate to move, the push-pull plate can push a push plate to move up and down through an inclined plate, the push plate is located on the lower side of a lower connecting pipe, the lower connecting pipe and a middle connecting pipe can be pushed to move upwards when the push plate moves upwards, finally the lower connecting pipe and the middle connecting pipe are connected with an upper connecting pipe in an inserted mode, and the push plate moves downwards. The lower connecting pipe and the middle connecting pipe move downwards along with the lower connecting pipe and the middle connecting pipe under the action of self gravity, and finally the lower connecting pipe is separated from the exhaust pipeline.

Description

Technical Field

[0001] The invention belongs to the technical field of screw compressor components, and in particular relates to an exhaust mechanism for a screw compressor. Background Art

[0002] Screw compressors are core equipment for modern industrial production and are widely used in petrochemicals, coal chemical industry, natural gas, metallurgy, electric power, machinery manufacturing and defense industries.

[0003] In a Chinese patent with the publication number CN 218669813 U, an exhaust mechanism for a dry screw compressor is disclosed: an exhaust chamber, which is arranged on one side of the device body and fixedly connected to the middle of one side of the device body; a connecting base, the upper end of which is fixedly connected to the middle of the lower surface of the device body, the lower end of which is threadedly connected with a screw and fixedly connected to the upper surface of the mounting plate through the screw; an exhaust base, the upper end of which is fixedly connected to the lower surface of the device body, and the lower end of which is fixedly connected to the upper surface of the mounting plate;

[0004] However, the above device has the following problems during use:

[0005] The connection base and the mounting plate inside the device are assembled by screws. During the inspection and maintenance, the device needs to be disassembled. During the disassembly and reassembly of the device, multiple screws need to be removed, which results in a lot of time spent in the entire device assembly and disassembly process.

[0006] In addition, during the process of loading and unloading the device, since there are many parts at the location of the exhaust assembly, the disassembled parts need to avoid other parts when they are transferred, which causes many inconveniences in the actual operation and requires high professional quality of the disassembly personnel. Therefore, the present application proposes an exhaust mechanism for a screw compressor. Summary of the invention

[0007] The object of the present invention is to provide an exhaust mechanism for a screw compressor to solve the problems raised by the above-mentioned background technology.

[0008] To achieve the above object, the present invention provides the following technical solution: an exhaust mechanism for a screw compressor, comprising a screw compressor body, wherein the screw compressor body comprises a shell and a ventilation duct, the ventilation duct is connected to an exhaust component, an exhaust duct is inserted into the exhaust component, and the exhaust duct is connected to the ventilation duct;

[0009] The exhaust assembly comprises an upper connecting pipe, and the upper connecting pipe is plugged into the middle connecting pipe;

[0010] A lower connecting pipe is installed on the side of the middle connecting pipe away from the upper connecting pipe, and the lower connecting pipe is sleeved on the outside of the exhaust pipe;

[0011] A combination unit is arranged at the position of the exhaust component, and the combination unit includes an inclined plate, one end of the inclined plate is connected to a push plate, and the push plate is located at the lower side of the lower connecting pipe, the push plate is fixedly connected to a push rod, and the push rod penetrates the push plate, and one end of the inclined plate away from the push plate is connected to the power unit through a push-pull plate, and a separation unit is arranged at the position of the exhaust pipe.

[0012] Preferably, the upper connecting pipe is connected to the ventilation pipe by bolts and nuts, the exhaust pipe is inserted into the top area inside the upper connecting pipe, the exhaust pipe and the top area of ​​the upper connecting pipe are interference fit, and there is a gap between the exhaust pipe and the ventilation pipe.

[0013] Preferably, a sealing convex ring is provided on the middle connecting pipe, and a sealing groove is provided at a position corresponding to the sealing convex ring in the upper connecting pipe, and a sealing gasket is wrapped around the outer side of the sealing convex ring.

[0014] Preferably, an inner joint is further provided on the inner side of the middle connecting tube, the inner joint is fitted with the inner wall of the upper connecting tube, and a sealing ring is installed at the position where the inner joint is connected to the inner wall of the upper connecting tube.

[0015] Preferably, a noise reduction unit is provided inside the exhaust assembly, and the noise reduction unit includes an upper sound insulation member, a middle sound insulation member, and a lower sound insulation member, and the upper sound insulation member is located inside the upper connecting pipe.

[0016] Preferably, the upper sound insulation member is arranged on the upper sound insulation frame, and the upper sound insulation member is attached to the inner wall of the upper connecting pipe, and the upper sound insulation member, the middle sound insulation member, and the lower sound insulation member are all provided with cavities inside, and the upper sound insulation member, the middle sound insulation member, and the lower sound insulation member are distributed in sequence.

[0017] Preferably, the upper sound insulation piece is plugged into the upper plug-in piece, the upper plug-in piece is sleeved on the outside of the exhaust pipe, the middle sound insulation piece is arranged in the middle connecting pipe, and the middle sound insulation piece is in contact with the inner wall of the middle connecting pipe.

[0018] Preferably, the lower sound insulation piece is fitted with the inner wall of the lower connecting pipe, the outer wall of the lower sound insulation piece is connected to the lower connecting frame through a sound insulation board, the lower connecting frame is plugged with the lower connector, and the lower connector is arranged on the exhaust duct.

[0019] Preferably, the push-pull plate is inserted into the power guide rail, and the push-pull plate is slidably connected to the power guide rail, a lifting guide rail is provided at the position of the push plate, the push plate and the lifting guide rail can only move up and down relative to each other, and the lifting guide rail is connected to the power guide rail, and a support member is provided at the position of the lower connecting tube corresponding to the push plate.

[0020] Preferably, the separation unit includes an electromagnet, which is located directly above the lower connecting tube, and an adsorption plate is installed on the lower connecting tube. The electromagnet is installed on a conical ring, and a storage tank is installed on the conical ring. The storage tank is connected to a lifting unit for driving it to move up and down, and the lifting unit is connected to the traveling unit through a tray.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. The exhaust assembly of the present invention is divided into three parts: an upper connecting pipe, a middle connecting pipe, and a lower connecting pipe. The upper connecting pipe is connected to the ventilation pipe by bolts, while the middle connecting pipe, the lower connecting pipe and the upper connecting pipe are connected by plugging. The power unit in the combined unit can drive the push-pull plate to move, and the push-pull plate can push the push plate to move up and down through the inclined plate. The push plate is located at the lower side of the lower connecting pipe, and its upward movement can push the lower connecting pipe and the middle connecting pipe to move upward, and finally plugged with the upper connecting pipe, and the push plate moves downward, and the lower connecting pipe and the middle connecting pipe move downward together under the action of their own gravity, and finally the lower connecting pipe is separated from the exhaust pipe, completing the disassembly of the exhaust assembly, which is convenient for subsequent maintenance work.

[0023] 2. The internal separation unit of the present invention is started, and it can drive the electromagnet to move up and down through the lifting unit, so as to absorb the lower connecting pipe, and then push it down from the push plate and the push rod, and then move it away through the traveling unit, thereby completing the disassembly of the exhaust assembly. The two are far apart after separation, which is convenient for taking and placing. There is no need to approach the connection point during the assembly process. The space for taking and placing is larger, and the operation is more convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is one of the structural schematic diagrams of the exhaust mechanism for the screw compressor in the present invention.

[0025] Figure 2 This is the second structural schematic diagram of the exhaust mechanism for the screw compressor in the present invention.

[0026] Figure 3 This is one of the structural schematic diagrams of the exhaust assembly in the present invention.

[0027] Figure 4 This is the second structural schematic diagram of the exhaust assembly in the present invention.

[0028] Figure 5 This is the third structural schematic diagram of the exhaust assembly in the present invention.

[0029] Figure 6 It is a schematic structural diagram of the upper connecting pipe and the middle connecting pipe in the present invention.

[0030] Figure 7It is a schematic diagram of the structure of the middle connecting pipe and the lower connecting pipe in the present invention.

[0031] Figure 8 It is a schematic diagram of the structure of the separation unit in the present invention.

[0032] In the figure: 1, screw compressor body; 101, shell; 2, ventilation duct; 3, exhaust assembly; 301, upper connecting pipe; 302, bolt; 303, middle connecting pipe; 304, sealing convex ring; 305, sealing gasket; 306, inner joint; 307, sealing ring; 308, lower connecting pipe; 4, exhaust duct; 5, noise reduction unit; 501, upper sound insulation; 502, upper sound insulation frame; 503, upper connecting frame; 504, middle sound insulation; 505, lower connecting frame; 506, lower connector; 507, lower sound insulation;

[0033] 6. Combination unit; 601. Inclined plate; 602. Push plate; 603. Support member; 604. Power unit; 605. Power guide rail; 606. Push-pull plate; 607. Lifting guide rail; 7. Separation unit; 701. Electromagnet; 702. Adsorption plate; 703. Storage tank; 704. Lifting unit; 705. Traveling unit. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Reference Figure 1-Figure 8 , an exhaust mechanism for a screw compressor, including a screw compressor body 1. Screw compressors are divided into single-screw compressors and twin-screw compressors. The screw compressor body 1 in the present technical solution adopts a single-screw compressor. The exhaust mechanism of the screw compressor is a complex and precise system, which is responsible for discharging the compressed gas from the inside of the compressor to the outside. The screw compressor body 1 includes a shell 101 and a ventilation pipe 2. The ventilation pipe 2 is connected to an exhaust component 3. An exhaust pipe 4 is inserted in the exhaust component 3, and the exhaust pipe 4 is connected to the ventilation pipe 2.

[0036] The exhaust pipe 4 is connected to the ventilation pipe 2 through the exhaust assembly 3 and is used to discharge the gas produced by the screw compressor body 1.

[0037] Specifically, the exhaust component 3 includes an upper connecting pipe 301, which is connected to the ventilation pipe 2 by bolts 302 and nuts. The exhaust pipe 4 is inserted into the top area inside the upper connecting pipe 301. The exhaust pipe 4 and the top area of ​​the upper connecting pipe 301 are interference fit, and the position where the exhaust pipe 4 and the upper connecting pipe 301 are connected is sealed. There is a gap between the exhaust pipe 4 and the ventilation pipe 2; the gas enters the upper connecting pipe 301 in the exhaust component 3 through the ventilation pipe 2, and is discharged through the exhaust pipe 4 that is sealed.

[0038] More specifically, the upper connecting tube 301 is plugged into the middle connecting tube 303. In order to seal the connection position between the upper connecting tube 301 and the middle connecting tube 303, a sealing convex ring 304 is provided on the middle connecting tube 303, and a sealing groove is provided at the position corresponding to the sealing convex ring 304 in the upper connecting tube 301, and a sealing gasket 305 is wrapped on the outer side of the sealing convex ring 304. At the same time, an inner joint 306 is also provided on the inner side of the middle connecting tube 303, and the inner joint 306 is fitted with the inner wall of the upper connecting tube 301, and a sealing ring 307 is installed at the position where the inner joint 306 is connected to the inner wall of the upper connecting tube 301.

[0039] A sealing ring 307 and a sealing convex ring 304 are provided at the connection position of the upper connecting tube 301 and the middle connecting tube 303, wherein the sealing ring 307 is located on the inner joint 306 and is inserted into the inner side of the upper connecting tube 301, while the sealing convex ring 304 is provided on the middle connecting tube 303 and is located on the outer side of the upper connecting tube 301. In this way, the inner and outer layers are sealed to avoid the occurrence of a gap at the connection position of the upper connecting tube 301 and the middle connecting tube 303, thereby ensuring the sound insulation effect.

[0040] It should be noted that a lower connecting pipe 308 is installed on the side of the middle connecting pipe 303 away from the upper connecting pipe 301 , the lower connecting pipe 308 is sleeved on the outside of the exhaust pipe 4 , and the position where the lower connecting pipe 308 is connected to the exhaust pipe 4 is sealed.

[0041] The exhaust duct 4 transports compressed gas, which will generate a lot of noise during the transportation process. In order to reduce the noise, a noise reduction unit 5 is arranged inside the exhaust component 3. The noise reduction unit 5 includes an upper sound insulation member 501, a middle sound insulation member 504, and a lower sound insulation member 507. The upper sound insulation member 501 is located inside the upper connecting pipe 301. The upper sound insulation member 501 is arranged on the upper sound insulation frame 502, and the upper sound insulation member 501 is attached to the inner wall of the upper connecting pipe 301. The upper sound insulation member 501, the middle sound insulation member 504, and the lower sound insulation member 507 are all provided with cavities inside. The cavities can isolate the propagation of sound and achieve the effect of noise reduction, thereby reducing the noise generated during the flow of gas inside the exhaust duct 4. The upper sound insulation member 501, the middle sound insulation member 504, and the lower sound insulation member 507 are distributed in sequence.

[0042] Specifically, the upper sound insulation member 501 is plugged into the upper connector, the upper connector is sleeved on the outside of the exhaust pipe 4, the middle sound insulation member 504 is arranged in the middle connecting pipe 303, and the middle sound insulation member 504 is in contact with the inner wall of the middle connecting pipe 303, and the lower sound insulation member 507 is in contact with the inner wall of the lower connecting pipe 308.

[0043] More specifically, the outer wall of the lower sound insulation member 507 is connected to the lower connecting frame 505 through a sound insulation board, the lower connecting frame 505 is plugged into the lower plug-in member 506 , and the lower plug-in member 506 is arranged on the exhaust duct 4 .

[0044] Through the cooperation of the upper connecting frame 503, the lower connecting frame 505 and other components, the upper sound insulator 501, the middle sound insulator 504 and the lower sound insulator 507 are respectively attached to the upper connecting pipe 301, the middle connecting pipe 303 and the lower connecting pipe 308, and the exhaust duct 4 is inserted into the middle position of the exhaust assembly 3, located inside the upper sound insulator 501, the middle sound insulator 504 and the lower sound insulator 507, so that the sound generated during the flow of gas inside the exhaust duct 4 needs to be transmitted to the outside through the upper sound insulator 501, the middle sound insulator 504 and the lower sound insulator 507, and the upper sound insulator 501, the middle sound insulator 504 and the lower sound insulator 507 are all provided with cavities, which can isolate the propagation of sound and achieve the effect of noise reduction, thereby reducing the noise generated during the flow of gas inside the exhaust duct 4.

[0045] The exhaust component 3 is an important component of the screw compressor body 1. Some of its internal components need to be regularly inspected and maintained. During the inspection, the easily damaged components inside need to be disassembled. Therefore, a combination unit 6 is arranged at the position of the exhaust component 3. The combination unit 6 includes an inclined plate 601. One end of the inclined plate 601 is connected to the push plate 602, and the push plate 602 is located on the lower side of the lower connecting pipe 308. The push plate 602 is fixedly connected to the push rod, and the push rod penetrates the push plate 602. The end of the inclined plate 601 away from the push plate 602 is connected to the power unit 604 through the push-pull plate 606. The push-pull plate 606 is inserted into the power guide track 605, and the push-pull plate 606 is slidably connected to the power guide track 605.

[0046] In order to ensure smooth up and down movement of the lower connecting tube 308, a lifting guide track 607 is provided at the position of the push plate 602. The push plate 602 and the lifting guide track 607 can only move up and down relative to each other, and the lifting guide track 607 is connected to the power guide track 605. It should be noted that a support member 603 is provided at the position of the lower connecting tube 308 corresponding to the push plate 602. The support member 603 can support the push plate 602 to prevent the push plate 602 from generating sufficient force to drive the lower connecting tube 308 to move, so that the push plate 602 and the lower connecting tube 308 can move up and down smoothly.

[0047] The combination unit 6 can separate part of the exhaust component 3 from the exhaust pipe 4. The separated part of the exhaust component 3 needs to be transported, so a separation unit 7 is set at the position of the exhaust pipe 4. The separation unit 7 includes an electromagnet 701. The electromagnet 701 is located directly above the lower connecting pipe 308, and an adsorption plate 702 is installed on the lower connecting pipe 308. The electromagnet 701 is installed on a conical ring, and a storage tank 703 is installed on the conical ring. The storage tank 703 is connected to a lifting unit 704 for driving it to move up and down. The lifting unit 704 is connected to the traveling unit 705 through a tray. The traveling unit 705 can drive the tray, the lifting unit 704 and other components to move. After the electromagnet 701 is started, it can absorb the adsorption plate 702, thereby absorbing the lower connecting pipe 308 and the middle connecting pipe 303. In this way, the traveling unit 705 can remove the detached lower connecting pipe 308 and the middle connecting pipe 303, which is convenient for the maintenance work of the staff.

[0048] Working principle:

[0049] The exhaust assembly 3 is divided into three parts: an upper connecting pipe 301, a middle connecting pipe 303, and a lower connecting pipe 308. The upper connecting pipe 301 is connected to the ventilation pipe 2 by bolts 302, and the middle connecting pipe 303, the lower connecting pipe 308 and the upper connecting pipe 301 are connected by plugging. The power for plugging the middle connecting pipe 303, the lower connecting pipe 308 and the upper connecting pipe 301 comes from the combination unit 6.

[0050] The power unit 604 in the combined unit 6 can drive the push-pull plate 606 to move, and the push-pull plate 606 can push the push plate 602 to move up and down through the inclined plate 601. The push plate 602 is located at the lower side of the lower connecting pipe 308. Its upward movement can push the lower connecting pipe 308 and the middle connecting pipe 303 to move upward, and finally be plugged together with the upper connecting pipe 301. The push plate 602 moves downward, and the lower connecting pipe 308 and the middle connecting pipe 303 move downward together under the action of their own gravity, and finally the lower connecting pipe 308 is separated from the exhaust pipe 4.

[0051] When the separation unit 7 is started, it can drive the electromagnet 701 to move up and down through the lifting unit 704, so as to absorb the lower connecting pipe 308, and then push it down from the push plate 602 and the push rod, and then move it away through the moving unit 705, thereby completing the disassembly of the exhaust component 3. The two separated parts are far apart, which is convenient for taking and placing. There is no need to approach the connection point during the assembly process. The space for taking and placing is larger, and the operation is more convenient.

[0052] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An exhaust mechanism for a screw compressor, comprising a screw compressor body (1), wherein the screw compressor body (1) comprises a shell (101) and a ventilation pipe (2), wherein the ventilation pipe (2) is connected to an exhaust component (3), characterized in that: An exhaust pipe (4) is inserted into the exhaust component (3), and the exhaust pipe (4) is connected to the ventilation pipe (2); The exhaust assembly (3) comprises an upper connecting pipe (301), and the upper connecting pipe (301) is plugged into a middle connecting pipe (303); A lower connecting pipe (308) is installed on the side of the middle connecting pipe (303) away from the upper connecting pipe (301), and the lower connecting pipe (308) is sleeved on the outside of the exhaust pipe (4); A combination unit (6) is arranged at the position of the exhaust component (3), and the combination unit (6) includes an inclined plate (601), one end of the inclined plate (601) is connected to a push plate (602), and the push plate (602) is located at the lower side of the lower connecting pipe (308), the push plate (602) is fixedly connected to a push rod, and the push rod penetrates the push plate (602), and the end of the inclined plate (601) away from the push plate (602) is connected to the power unit (604) through a push-pull plate (606), and a separation unit (7) is arranged at the position of the exhaust pipe (4).

2. The exhaust mechanism for a screw compressor according to claim 1, characterized in that: The upper connecting pipe (301) is connected to the ventilation pipe (2) by means of bolts (302) and nuts, the exhaust pipe (4) is inserted into the top area inside the upper connecting pipe (301), the exhaust pipe (4) and the top area of ​​the upper connecting pipe (301) are interference fit, and there is a gap between the exhaust pipe (4) and the ventilation pipe (2).

3. The exhaust mechanism for a screw compressor according to claim 1, characterized in that: The middle connecting tube (303) is provided with a sealing convex ring (304), and a sealing groove is provided in the upper connecting tube (301) at a position corresponding to the sealing convex ring (304), and a sealing gasket (305) is wrapped around the outer side of the sealing convex ring (304).

4. The exhaust mechanism for a screw compressor according to claim 3, characterized in that: An inner joint (306) is also provided on the inner side of the middle connecting tube (303), the inner joint (306) is in contact with the inner wall of the upper connecting tube (301), and a sealing ring (307) is installed at the position where the inner joint (306) is connected to the inner wall of the upper connecting tube (301).

5. The exhaust mechanism for a screw compressor according to claim 1, characterized in that: A noise reduction unit (5) is arranged inside the exhaust assembly (3), and the noise reduction unit (5) comprises an upper sound insulation member (501), a middle sound insulation member (504), and a lower sound insulation member (507), and the upper sound insulation member (501) is located inside the upper connecting pipe (301).

6. The exhaust mechanism for a screw compressor according to claim 5, characterized in that: The upper sound insulation member (501) is arranged on the upper sound insulation frame (502), and the upper sound insulation member (501) is attached to the inner wall of the upper connecting pipe (301), and cavities are arranged inside the upper sound insulation member (501), the middle sound insulation member (504), and the lower sound insulation member (507), and the upper sound insulation member (501), the middle sound insulation member (504), and the lower sound insulation member (507) are distributed in sequence.

7. The exhaust mechanism for a screw compressor according to claim 6, characterized in that: The upper sound insulation piece (501) is plugged into the upper plug-in piece, the upper plug-in piece is sleeved on the outside of the exhaust pipe (4), the middle sound insulation piece (504) is arranged in the middle connecting pipe (303), and the middle sound insulation piece (504) is in contact with the inner wall of the middle connecting pipe (303).

8. The exhaust mechanism for a screw compressor according to claim 7, characterized in that: The lower sound insulation member (507) is fitted with the inner wall of the lower connecting pipe (308), the outer wall of the lower sound insulation member (507) is connected to the lower connecting frame (505) through a sound insulation board, the lower connecting frame (505) is plugged into the lower plug-in member (506), and the lower plug-in member (506) is arranged on the exhaust pipe (4).

9. The exhaust mechanism for a screw compressor according to claim 1, characterized in that: The push-pull plate (606) is inserted into the power guide track (605), and the push-pull plate (606) is slidably connected to the power guide track (605). A lifting guide track (607) is arranged at the position of the push plate (602). The push plate (602) and the lifting guide track (607) can only move up and down relative to each other, and the lifting guide track (607) is connected to the power guide track (605). A support member (603) is arranged at the position of the lower connecting tube (308) corresponding to the push plate (602).

10. The exhaust mechanism for a screw compressor according to claim 1, characterized in that: The separation unit (7) comprises an electromagnet (701), the electromagnet (701) is located directly above the lower connecting tube (308), and the lower connecting tube (308) is equipped with an adsorption plate (702), the electromagnet (701) is installed on a conical ring, and a storage tank (703) is installed on the conical ring. The storage tank (703) is connected to a lifting unit (704) for driving it to move up and down, and the lifting unit (704) is connected to the traveling unit (705) through a tray.

Images