CN212536067U

CN212536067U - Oil-free screw air blower

Info

Publication number: CN212536067U
Application number: CN202021215313.6U
Authority: CN
Inventors: 邓敏; 杨向华
Original assignee: Chengdu Xinyizheng Environmental Protection Technology Co ltd
Current assignee: Chengdu Xinyizheng Environmental Protection Technology Co ltd
Priority date: 2020-06-28
Filing date: 2020-06-28
Publication date: 2021-02-12
Anticipated expiration: 2030-06-28

Abstract

The utility model relates to an oil-free screw air-blower, the on-line screen storage device comprises a base, the fan, the mainframe box, piston spare and play dryer, fan and mainframe box fixed mounting are on the base, the piston spare is installed on the mainframe box, it is connected with the piston spare to go out the dryer, the fan, the mainframe box, the piston spare is with going out the dryer, the fan is provided with the oil drip device with the junction of mainframe box, it is provided with the filter screen with the junction of piston spare to go out the dryer, the mainframe box includes the case shell, the apparatus further comprises a rotating shaft, cam and connecting rod, a rotating shaft, the cam is installed in the case shell with the connecting rod, pivot one end is connected with the fan, cam one end is connected with the pivot, the cam other end is connected with connecting rod one end. The utility model discloses utilize the pivot rotation and then the linkage piston spare to blast air, the noise is low to set up the lubricating oil molecule that the play dryer is arranged in eliminating blast air pulse and carrying in the gas at piston spare air outlet, provide clean blast air gas.

Description

Oil-free screw air blower

Technical Field

The utility model relates to an air-blower technical field especially relates to an there is not oily screw air-blower.

Background

The blower mainly comprises the following six parts: motor, air cleaner, air-blower body, air chamber, base, oil drip mouth. The blower eccentrically operates by a rotor offset in a cylinder, and sucks, compresses and discharges air by changing the volume between vanes in a rotor groove, thereby compressing the air. The mode that utilizes the rotor to drive the blade compressed air, the consumption is great, and the noise is higher, and is very inconvenient during the use. In addition, in the working process of the existing blower, an oil dripping nozzle needs to be used for lubricating an internal rotating mechanism, so that a large amount of lubricating oil molecules are inevitably carried in gas blown out by the blower, and therefore the existing blower needs to be improved.

SUMMERY OF THE UTILITY MODEL

Based on this, it is necessary to blow out the not clean condition of gas inadequately to current air-blower noise, provides an oil-free screw rod air-blower, utilizes the pivot rotation and then links the piston spare and blast air, and the noise is low to set up out the chimney at piston spare air outlet and be arranged in eliminating the lubricating oil molecule that blast air pulse and gas carried, provide clean blast air gas.

An oilless screw blower comprises a base, a fan, a mainframe box, a piston part and an air outlet cylinder, wherein the fan and the mainframe box are fixedly arranged on the base, the piston piece is arranged on the mainframe box, the air outlet cylinder is connected with the piston piece, the fan, the mainframe box, the piston piece and the air outlet cylinder are communicated, an oil dripping device is arranged at the joint of the fan and the mainframe box, a filter screen is arranged at the joint of the air outlet cylinder and the piston piece, the mainframe box comprises a box shell, a rotating shaft, a cam and a connecting rod, wherein the rotating shaft, the cam and the connecting rod are arranged in the box shell, one end of the rotating shaft is connected with the fan, one end of the cam is connected with the rotating shaft, the other end of the cam is connected with one end of the connecting rod, the other end of the connecting rod is connected with the piston piece, and the rotating shaft rotates to drive the cam to do eccentric motion.

Preferably, the rotating shaft is hollow, and the rotating shaft is communicated with the fan and the piston piece.

Preferably, a groove is formed at the position, adjacent to the oil dripping device, of the rotating shaft.

Preferably, the air outlet cylinder comprises a connecting channel and an expansion tank, the connecting channel is connected between the box shell and the expansion tank, and the filter screen is arranged in the connecting channel.

Preferably, the side part of the connecting channel is provided with a fixing lug, and a bolt penetrates through the box shell to be connected with the fixing lug.

The utility model discloses an useful part lies in: 1. the air is sucked into the mainframe box by the fan, the rotating shaft rotates to drive the piston machine to compress the air to complete air blowing, the noise is low, a filter screen is arranged at the joint of the air outlet cylinder and the piston piece and used for filtering lubricating oil molecules in the air, and the air is blown out by the clean air blower; 2. the expansion tank is arranged for offsetting the pulse effect generated by the gas when the piston piece moves, so that the gas is continuously blown out, and intermittent blowing is avoided.

Drawings

FIG. 1 is a schematic perspective view of an oil-free screw blower according to one embodiment;

FIG. 2 is a perspective view of the air outlet barrel;

fig. 3 is an exploded view of the main housing and piston member.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

As shown in fig. 1-3, an oil-free screw blower comprises a base 1, a fan 2, a main case 3, a piston 4 and an air outlet cylinder 5, wherein the fan 2 is fixedly installed on the base 1, the piston 4 is installed on the main case 3, the air outlet cylinder 5 is connected with the piston 4, the fan 2, the main case 3, the piston 4 and the air outlet cylinder 5 are communicated, an oil dripping device 6 is arranged at the joint of the fan 2 and the main case 3, a filter screen 51 is arranged at the joint of the air outlet cylinder 5 and the piston 4, the main case 3 comprises a case shell 31, a rotating shaft 32, a cam 33 and a connecting rod 34, the rotating shaft 32, the cam 33 and the connecting rod 34 are installed in the case shell 31, one end of the rotating shaft 32 is connected with the fan 2, one end of the cam 33 is connected with the rotating shaft 32, the other end of the cam 33 is connected with one end of the connecting rod 34, the other end of the connecting rod 34 is connected with the piston member 4, and the rotating shaft 32 rotates to drive the cam 33 to do eccentric motion. Specifically, in this embodiment, during operation, the blower 2 starts to suck air and transmit the sucked air into the main cabinet 3, an air inlet valve (not shown) is disposed between the main cabinet 3 and the blower 2, when the main cabinet 3 is filled with air, an external motor (not shown) drives the rotating shaft 32 in the cabinet 31 to rotate, at this time, one end of the connecting rod 34 is connected to the rotating shaft 32 through the cam 33, the other end of the connecting rod 34 is connected to the piston member 4, and the piston member 4 starts to compress air and blow air when moving up and down. It should be noted that an air outlet valve is further disposed between the piston member 4 and the air outlet cylinder 5, so that when the air blower sucks air, the air inlet valve is opened, the air outlet valve is closed, and the piston member 4 is driven by the connecting rod 34 to move upwards; when the blower blows, the air inlet valve is closed, the air outlet valve is opened, and the piston piece 4 is driven by the connecting rod 34 to move downwards, so that a blowing process is completed. Furthermore, in order to reduce the friction force at the joint of the rotating shaft 32, the cam 33 and the connecting rod 34, the oil dripping device 6 is arranged on the main case 3, the oil dripping device 6 is communicated with the case shell 31, and the lubricating oil in the oil dripping device 6 can be directly dripped into the case shell 31. Therefore, when the blower sucks air, the lubricating oil is volatilized and lubricated along with the gas in contact with the rotating shaft 32, the cam 33, and the link 34. When the blower blows air, in order to prevent volatilized lubricating oil molecules from being blown out along with the air, a filter screen 51 is arranged at the joint of the piston piece 4 and the air outlet cylinder 5, and the filter screen 51 is used for adsorbing the lubricating oil, so that the air blown out by the blower is cleaner.

As shown in fig. 3, the rotating shaft 32 is hollow, and the rotating shaft 32 communicates the fan 2 and the piston member 4. Specifically, in this embodiment, the rotating shaft 32 is hollow, and air can directly enter the main cabinet 3 from the fan 2 by using the rotating shaft 32, and then is compressed and blown by the piston member 4, so as to reduce the overall volume of the main cabinet 3.

As shown in fig. 3, a groove 321 is provided at a position where the rotating shaft 32 is adjacent to the oil dripping device 6. Specifically, the groove 321 is provided for receiving the lubricating oil flowing out from the oil dripping device 6, so that the lubricating oil is volatilized along with the flowing direction of the gas, and the lubricating effect on the connecting part of the rotating shaft 32, the cam 33 and the connecting rod 34 is better.

As shown in fig. 1-2, the air outlet cylinder 5 includes a connecting passage 52 and an expansion tank 53, the connecting passage 52 is connected between the box shell 31 and the expansion tank 53, and the filter screen 51 is disposed in the connecting passage 52. Specifically, in the present embodiment, the outlet of the expansion-eliminating tank 53 has a small volume and the connection with the connecting passage 52 has a large volume, so that when the piston member 4 moves downward to blow air, the stagnation of air generated by the movement of the piston member 4 is eliminated, and the air is smoothly blown out.

As shown in fig. 2, a fixing lug 521 is provided at a side of the connecting channel 52, and a bolt penetrates the housing 31 to be connected with the fixing lug 521.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims

1. An oil-free screw blower is characterized in that: including the base, the fan, the mainframe box, piston spare and play dryer, the fan with mainframe box fixed mounting is in on the base, the piston spare is installed on the mainframe box, go out the dryer with the piston spare is connected, fan, mainframe box, piston spare and play dryer are the intercommunication, the fan with the junction of mainframe box is provided with the oil drip device, go out the dryer with the junction of piston spare is provided with the filter screen, the mainframe box includes case shell, pivot, cam and connecting rod are installed in the case shell, pivot one end with the fan is connected, cam one end with the pivot is connected, the cam other end with connecting rod one end is connected, the connecting rod other end with the piston spare is connected, the pivot is rotatory to be driven the eccentric motion is done to the cam.

2. An oil-free screw blower as claimed in claim 1, wherein: the rotating shaft is hollow and is communicated with the fan and the piston piece.

3. An oil-free screw blower as claimed in claim 2, wherein: and a groove is formed at the position of the rotating shaft adjacent to the oil dripping device.

4. An oil-free screw blower as claimed in claim 3, wherein: the air outlet cylinder comprises a connecting channel and an expansion tank, the connecting channel is connected between the box shell and the expansion tank, and the filter screen is arranged in the connecting channel.

5. An oil-free screw blower as claimed in claim 4, wherein: the lateral part of the connecting channel is provided with a fixing lug, and a bolt penetrates through the box shell and is connected with the fixing lug.