CN217582488U

CN217582488U - Double-screw air compressor

Info

Publication number: CN217582488U
Application number: CN202220962205.8U
Authority: CN
Inventors: 张海龙; 何晓东; 高赛; 张茹飞; 尚金克; 解凯旋
Original assignee: Shijiazhuang Tongan Machinery Co ltd
Current assignee: Shijiazhuang Tongan Machinery Co ltd
Priority date: 2022-04-25
Filing date: 2022-04-25
Publication date: 2022-10-14
Anticipated expiration: 2032-04-25

Abstract

The utility model discloses a double-screw air compressor, which comprises a compressor head, an oil cylinder communicated with the exhaust port of the compressor head, and an air circuit component and an oil circuit component respectively communicated with the oil cylinder; and an air inlet pipe for directly butting an air outlet of the compressor head and an exhaust pipe for directly butting the air channel assembly are integrally formed on the oil gas cylinder. The utility model discloses structural planning is reasonable, the overall arrangement is compact, small, the leakage point is few, the maintenance is simple, and production and running cost are low, can guarantee good working property for a long time, and the air feeder that is fit for as mill or individual merchant is popularized and applied very much.

Description

Double-screw air compressor

Technical Field

The utility model belongs to the technical field of air compressor, concretely relates to double screw air compressor.

Background

The double-screw air compressor generally comprises a compressor head fixedly arranged in a box body, an oil cylinder communicated with an exhaust port of the compressor head, an oil content core fixedly arranged in the oil cylinder, an oil filter communicated with an oil outlet of the oil cylinder and a radiator fixedly arranged between the oil filter and the compressor head. When the machine runs, external air is compressed by the machine head of the compressor, then is mixed with lubricating oil in the machine head to form an oil-gas mixture, and then is discharged into the oil-gas cylinder through the exhaust port of the machine head; the oil-gas mixture is separated into compressed gas containing a small amount of oil and liquid lubricating oil under the action of an oil-gas cylinder, the compressed gas is secondarily filtered by an oil-content core in the oil-gas cylinder and then discharged into a gas storage tank to supply gas for a factory, and the lubricating oil is secondarily filtered by the oil filter and cooled by a radiator and then flows back to a machine head again.

At present, in order to reduce the maintenance difficulty of a double-screw air compressor, most manufacturers select to arrange an oil core which is originally fixedly arranged in an oil cylinder externally, and oil cylinders, an air outlet, an oil outlet, a safety valve interface and an exhaust hole are arranged to be of an integral structure. Although the structure saves cost and arrangement space to a certain extent, the following defects still exist:

the multiple interfaces still need to adopt wire connectors or other connecting pieces to realize the communication between the components and the pipelines, and the connecting pieces are more in use number and still higher in cost. In addition, the use of the connecting piece can also cause the increase of leakage points in the air path supply system of the double-screw air compressor, thereby reducing the integral air displacement, influencing the working efficiency of the machine and increasing the running cost of the machine. (according to practical calculations, only one small hole of 3mm, leakage loss per month can be as high as 2000 yuan).

Disclosure of Invention

For solving exist among the prior art more than not enough, the utility model aims at providing a double screw air compressor to reach the purpose that reduces the leakage point, improves the machine displacement, reduces machine running cost.

In order to achieve the above object, the utility model adopts the following technical scheme: a double-screw air compressor comprises a compressor head, an oil gas cylinder communicated with an exhaust port of the compressor head, and an air path assembly and an oil path assembly respectively communicated with the oil gas cylinder; and an air inlet pipe for directly butting an air outlet of the compressor head and an exhaust pipe for directly butting the air channel assembly are integrally formed on the oil and gas cylinder.

As the limitation of the utility model, the gas circuit component comprises an external oil core and a gas circuit pipe communicated with the external oil core; wherein, be equipped with on the external oil core and be used for the butt joint the oil branch seat of blast pipe.

As a further limitation of the utility model, the utility model also comprises a gas storage tank communicated with the gas path pipe.

As another limitation of the utility model, the oil circuit component comprises an oil filter communicated with the oil outlet of the oil cylinder and a radiator communicated with the oil filter; the radiator is communicated with an oil injection port of the compressor head.

As a further limitation of the utility model, the utility model also comprises a box body which is provided with an air inlet end and an air outlet end on one group of opposite side surfaces;

the radiator is fixedly arranged at the position of the air outlet end of the box body.

As the utility model discloses a further inject again, be equipped with a door plant on the lateral wall of box, the top is equipped with the detachable apron.

As the utility model discloses a further inject again, box air inlet end position department is equipped with the detachable protection network admittedly through a plurality of limiting plates of bending.

Since the technical scheme is used, compared with the prior art, the utility model, the beneficial effect who obtains is:

(1) The utility model discloses improved the structure of oil gas section of thick bamboo, changed into the intercommunication mode of direct butt joint with the former intercommunication mode that adopts the connecting piece between oil gas section of thick bamboo and the compressor aircraft nose gas vent, between oil gas section of thick bamboo and the gas circuit subassembly, made the activity interface by 4 reductions for 2, effectively reduced the probability of appearance of leakage point, improved the machine displacement, guaranteed machine work efficiency, reduced machine running cost.

(2) The utility model discloses overall structure has still been optimized for the overall arrangement is compact, the volume is littleer, box technology is simpler. Firstly, an external oil core structure is adopted, an oil cylinder is not required to be disassembled when the oil core is maintained and replaced, the maintenance is simple, the operation space required by the maintenance is relatively smaller, and the space volume can be further reduced; secondly, based on an external oil core structure, the box body is only provided with one side door, and a plurality of side doors are not required to be arranged to provide multidirectional maintenance space, so that the problem that the box body manufacturing process is complex due to the fact that a plurality of upright posts are arranged on four side doors, and a plurality of metal plates are bent (bending is used for improving the structural strength) is solved; then based on external oil core structure, unilateral door box structure, make the radiator can rationally adorn admittedly on the box lateral wall, and the box top then can set up to detachable construction, and then can rationally reduce the machine height, further realized reducing to the machine volume.

The fixed mounting mode that the radiator was put to the side helps the heat dissipation of airing exhaust, has still avoided the condition that the dust was praised to radiator ventilation groove collection simultaneously, and the maintenance number of times has still been reduced when the radiating effect is better.

(3) The utility model discloses in the gas holder of addding for need not the large-scale surge tank in the external mill again during the machine operation, and then can realize the application in arbitrary place, use the flexibility higher.

(4) The utility model discloses the protection network that well box inlet end department set up can prevent effectively that impurity from blockking up compressor aircraft nose air inlet in the air, avoiding in the air dust to sneak into and hinder the high-efficient work of spare part in each spare part of machine, has effectively guaranteed holistic working property of machine and life. And the protection network is adorned admittedly on the box through the limiting plate of bending with the mode of dismantling, makes the staff more simple and convenient to the change cleaning work of protection network.

To sum up, the utility model discloses structural planning is reasonable, the overall arrangement is compact, small, the leakage point is few, the maintenance is simple, and production, running cost are low, can guarantee good working property for a long time, and the air feeder of especially adapted conduct mill or individual merchant is popularized and applied.

Drawings

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

Fig. 1 is a schematic diagram of the internal structure of the embodiment of the present invention;

fig. 2 is a schematic view of the internal structure of the embodiment of the present invention from another angle;

FIG. 3 is a schematic structural diagram of the case according to the embodiment of the present invention;

FIG. 4 is a schematic structural view of the case body and the air storage tank after being combined in the embodiment of the present invention;

in the figure: 1. a compressor head; 2. an oil-gas cylinder; 3. an air inlet pipe; 4. an exhaust pipe; 5. an external oil core; 6. an inner buckle type connector; 7. an air passage pipe; 8. oil filtration; 9. a heat sink; 10. a box body; 11. an air inlet end; 12. an air outlet end; 13. a door panel; 14. a cover plate; 15. and a gas storage tank.

Detailed Description

The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It is to be understood that the preferred embodiments described herein are for purposes of illustration and understanding only and are not intended to limit the invention.

Example A twin screw air compressor

The embodiment improves the communication mode between the oil and gas cylinder 2 and the exhaust port and the gas circuit component of the compressor head 1, and simultaneously optimizes the overall layout structure, so that the embodiment has the characteristics of compact layout, small size, few leakage points, simple maintenance and the like.

As shown in fig. 1 to 4, the present embodiment includes a compressor head 1, an oil cylinder 2, an air channel assembly and an oil channel assembly, which are fixedly installed in a box 10, wherein the compressor head 1 is communicated with the oil cylinder 2, and the oil cylinder 2 is respectively communicated with the air channel assembly and the oil channel assembly. Namely, the compressor head 1 → the oil and gas cylinder 2 → the gas path component are communicated in sequence to form the gas path supply system of the embodiment; the compressor head 1 → the oil cylinder 2 → the oil circuit assembly → the compressor head 1 are communicated in a closed loop in sequence, forming the lubricating oil circulation system of the embodiment.

Specifically, the compressor head 1 is used for compressing air, and a screw compressor disclosed in the publication number "CN114109833A" is adopted. The screw compressor adopts a direct connection mode of the motor and the screw, has no belt and coupler connection and no flange connection, reduces leakage points, and simultaneously has smaller vibration and higher efficiency. Moreover, a damping film is arranged between the bottom end of the compressor head 1 and the box body 10 in the embodiment, so that the vibration is further reduced.

The oil gas cylinder 2 is communicated with an exhaust port of the compressor head 1 and is used for separating oil-gas mixture generated by the compressor head 1. As shown in fig. 2, an air inlet pipe 3 and an air outlet pipe 4 are integrally formed on the oil cylinder 2, and the end portions of the air inlet pipe 3 and the air outlet pipe 4 are provided with external threads. During actual assembly, the air inlet pipe 3 can be directly butted with an air outlet of the compressor head 1 through external threads arranged at the end part, so that the compressor head 1 and the oil cylinder 2 form a communicating structure; the exhaust pipe 4 can be directly butted with the gas circuit component through the external thread arranged at the end part, so that the oil cylinder 2 and the gas circuit component form a communicated structure.

Further, the gas path assembly is used for conveying the compressed gas separated from the gas cylinder 2. As shown in fig. 2, the air passage assembly includes an external oil core 5 and an air passage pipe 7, wherein the external oil core 5 is fixedly provided with an oil sub-seat. The oil seat allows the external oil core 5 to communicate with the exhaust pipe 4 and the air passage pipe 7, respectively, thereby forming a compressed gas passage of the oil cylinder 2 → the exhaust pipe 4 → the external oil core 5 → the air passage pipe 7.

In this embodiment, an air tank 15 for storing compressed air is provided so as to communicate with the gas passage pipe 7.

The oil circuit component is used for returning the lubricating oil separated by the oil cylinder 2 to the compressor head 1. As shown in fig. 1, the return flow assembly includes an oil filter 8 and a radiator 9, wherein the oil filter 8 is communicated with the oil outlet of the oil cylinder 2, the radiator 9 is respectively communicated with the oil filter 8 and the compressor head 1, and a lubricating oil return passage of the oil cylinder 2 → the oil filter 8 → the radiator 9 → the compressor head 1 is formed. In this embodiment, the oil outlet of the oil cylinder 2 is also integrally formed with an oil outlet pipe, and the end of the oil outlet pipe is provided with an external thread which can be directly butted with the oil filter 8 to form a communication structure. The radiator 9 is arranged on the side wall of the box body 10, the bottom end of the radiator can be directly fixed on the base of the box body 10, the installation is convenient and firm, and the vibration and the noise can be properly reduced during the operation.

It should be added that, a gas cooling circuit is further disposed in the radiator 9 in the oil circuit assembly of this embodiment, and the radiator 9 is connected between the gas circuit pipe 7 and the gas storage tank 15 of the gas circuit assembly through the gas cooling circuit, so as to perform cooling processing on the compressed gas.

The casing 10 mentioned above in this embodiment has a rectangular parallelepiped structure having an inlet end 11 and an outlet end 12. Specifically, as shown in fig. 3 and 4, an air inlet end 11 and an air outlet end 12 are respectively located on a set of opposite side surfaces of the box body 10, wherein a detachable protective net is fixedly installed at the air inlet end 11 through a plurality of L-shaped bent limiting plates; the air outlet end 12 is fixedly provided with a grid plate, and the radiator 9 in the oil circuit component is fixedly arranged at the air outlet end 12. The opposite side of the radiator 9 is the air inlet end 11 of the box body 10, so that the fan on the radiator 9 can adopt any one of air suction and air exhaust.

In this embodiment, the protection net adopts a 304 stainless steel filter screen, which can effectively isolate air impurities such as catkin and dust.

Further, the box 10 of the present embodiment is provided with only one door 13 on the side wall, and the top cover 14 is detachable. In order to further reduce the maintenance difficulty and improve the maintenance efficiency, an access hole can be optionally formed on the opposite side of the door plate 13 on the box body 10.

This embodiment operates under the control of a controller: firstly, the compressor head 1 compresses air, the compressed air is mixed with lubricating oil in the compressor head 1 to form an oil-gas mixture, and then the oil-gas mixture is discharged into the oil-gas cylinder 2 through an exhaust port of the compressor head 1. The oil-gas mixture is separated into compressed gas containing a small amount of oil and lubricating oil under the action of the oil-gas cylinder 2, wherein the compressed gas enters the external oil core 5 through the exhaust pipe 4 for secondary filtration, then enters the radiator 9 through the air passage pipe 7 for cooling treatment, and then is discharged into the air storage tank 15 for supplying air to a factory; lubricating oil flows into the oil filter 8 through the oil outlet, is secondarily filtered by the oil filter 8, is cooled by the radiator 9, and then flows back to the compressor head 1.

It should be noted that the above-mentioned embodiments are only preferred embodiments of the present invention, and the present invention is not limited thereto, and although the present invention has been described in detail with reference to the above-mentioned embodiments, it will be apparent to those skilled in the art that modifications can be made to the technical solutions described in the above-mentioned embodiments, or some technical features can be replaced with equivalents. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A double-screw air compressor comprises a compressor head, an oil gas cylinder communicated with an exhaust port of the compressor head, and an air path assembly and an oil path assembly respectively communicated with the oil gas cylinder; the method is characterized in that: and an air inlet pipe for directly butting an air outlet of the compressor head and an exhaust pipe for directly butting the air channel assembly are integrally formed on the oil and gas cylinder.

2. The twin screw air compressor of claim 1, wherein: the gas circuit component comprises an external oil core and a gas circuit pipe communicated with the external oil core; wherein, be equipped with on the external oil core and be used for the butt joint the oil branch seat of blast pipe.

3. The twin screw air compressor as set forth in claim 2, wherein: also comprises an air storage tank communicated with the air path pipe.

4. The twin-screw air compressor according to any one of claims 1 to 3, characterized in that: the oil way assembly comprises an oil filter communicated with the oil outlet of the oil gas cylinder and a radiator communicated with the oil filter; the radiator is communicated with an oil injection port of the compressor head.

5. The twin screw air compressor of claim 4, wherein: the box body is provided with an air inlet end and an air outlet end on one group of opposite side surfaces;

the radiator is fixedly arranged at the position of the air outlet of the box body.

6. The twin screw air compressor as set forth in claim 5, wherein: the side wall of the box body is provided with a door plate, and the top end of the box body is provided with a detachable cover plate.

7. The twin-screw air compressor as claimed in claim 5 or 6, characterized in that: the position of the air inlet of the box body is fixedly provided with a detachable protective net through a plurality of bending limiting plates.