Timed lubrication screw compressor

Abstract

The utility model relates to the technical field of screw compressors, and discloses a timing lubrication screw compressor which comprises a screw compressor body, the bottom of the screw compressor body is connected with a machine box, two supporting frames are fixed to the inner wall of the machine box, one side of the top of each supporting frame is slidably connected with a filter plate through a sliding rail, and the filter plate is connected with a motor. One side of the filter plate is connected with a cover plate connected to one side of the case through bolts, a timing switch is installed on one side of the case, and a cleaning assembly is arranged on one side of the case; the cleaning assembly comprises a protective box and a connecting plate, a reciprocating lead screw is driven by a motor output shaft to rotate and is in threaded connection with the connecting plate, so that the connecting plate reciprocates at the top of a filter plate along a sliding rod, a supporting plate abuts against the bottom of a convex block, and at the moment, bristles slide at the top of the filter plate; impurities blocked at the top of the filter plate are pushed to the inner side of the recycling box, the impurities are prevented from being accumulated on the filter plate, and the filtering efficiency of the filter plate is kept.

Description

Technical Field

[0001] The utility model relates to the technical field of screw compressors, in particular to a timed lubrication screw compressor. Background Art

[0002] Screw compressors, also known as spiral compressors, include screw air compressors and screw process compressors. Screw machines are positive displacement twin-screw oil-injected compressors, generally box-type skid-mounted structures.

[0003] In the Chinese patent with the authorization announcement number CN219492590U, a screw compressor with timed lubrication is disclosed, including a chassis, the top of the chassis is connected to a body by screws, the front of the chassis is connected to a liquid adding pipe, the bottom of the body is connected to a liquid outlet valve, the bottom end of the liquid outlet valve passes through the chassis and is connected to a transverse pipe, the bottom of the transverse pipe is connected to a liquid outlet cover, the inner cavity of the chassis is provided with a filtering mechanism, and the bottom of the left side of the chassis is connected to a drain valve. The utility model has the function of filtering and recycling the oil through the cooperation of the chassis, the thermostat, the U-shaped plate, the filter plate, the cooling pipe and the semiconductor refrigerator, so as to avoid the oil body being directly discharged after lubrication, and the oil coming out of the body can be filtered and collected first, and then cooled for heat exchange, with high cooling efficiency, low body temperature, high working efficiency, effective energy saving, significant economic benefits, and convenient for subsequent lubrication processing.

[0004] The above patent has the following defects: In the above patent, a filter plate is used to filter the lubricating oil. When impurities in the lubricating oil are blocked on the top of the filter plate, after a long period of operation, the impurities will accumulate on the filter plate, affecting the filtering efficiency. For this reason, a screw compressor with timed lubrication is proposed. Utility Model Content

[0005] The utility model aims to provide a screw compressor with timed lubrication to solve the problems raised in the above background technology.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a timed lubricated screw compressor, comprising a screw compressor body, the bottom of the screw compressor body is connected to a chassis, two support frames are fixed to the inner wall of the chassis, one side of the top of the support frame is slidably connected to a filter plate through a slide rail, one side of the filter plate is connected to a cover plate connected to one side of the chassis through bolts, a timing switch is installed on one side of the chassis, and a cleaning component is provided on one side of the chassis;

[0007] The cleaning assembly includes a protective box and a connecting plate, a brush plate hinged at the bottom of the connecting plate, bristles fixedly inserted into the bottom of the brush plate and slidably connected to the top of the filter plate, a motor installed on the inner wall of the protective box, a support plate fixed to one side of the brush plate, and a protrusion fixed to one side of the bottom of the connecting plate.

[0008] Preferably, a limiting plate located at one end of the filter plate is fixed to one side of the top of one of the above-mentioned support frames, and a fixing plate is threadedly connected to one side of the chassis.

[0009] Preferably, a sealing ring fitting to one side of the chassis is bonded to one side of the above-mentioned fixing plate, and a recovery box slidably connected to the inner wall of the chassis through a slide rail is fixed to one side of the fixing plate. The recovery box is located at one side of the bottom of the limiting plate.

[0010] Preferably, a sliding rod is fixed to the inner wall of the above-mentioned chassis, and the outer side of the sliding rod movably penetrates through one side of the connecting plate.

[0011] Preferably, a reciprocating lead screw is fixed to the output shaft end of the above-mentioned motor, and the outer side of the reciprocating lead screw is threadedly connected to one side of the connecting plate.

[0012] Preferably, a liquid inlet pump communicating with the lubricating oil inlet end of the screw compressor body is installed on one side of the top of the above-mentioned chassis, and a liquid outlet cover located on the top of the filter plate is communicated with the oil outlet end of the screw compressor body.

[0013] Preferably, one side of the above-mentioned protective box is fixed to the inner side wall of the chassis, a heat dissipation hole is opened on one side of the protective box, and the output end of the timing switch is electrically connected to the input ends of the motor and the liquid inlet pump respectively.

[0014] Compared with the prior art, the present utility model adopts the above technical solutions and has the following technical effects:

[0015] First, the output shaft of the motor drives the reciprocating lead screw to rotate. The reciprocating lead screw is threadedly connected to the connecting plate, so that the connecting plate reciprocates along the sliding rod on the top of the filter plate. The support plate abuts against the bottom of the convex block. At this time, the brush bristles slide on the top of the filter plate, and the impurities blocked on the top of the filter plate are pushed into the inner side of the recovery box, preventing the impurities from accumulating on the filter plate and maintaining the filtering efficiency of the filter plate.

[0016] Second, by removing the bolts on one side of the cover plate and pulling the cover plate, the filter plate can slide along the track groove of the slide rail, so that the filter plate can be easily taken out from the inside of the chassis, making the replacement of the filter plate simple and fast, reducing the downtime and maintenance cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0018] Figure 1 It is a schematic structural diagram of the first perspective of the present utility model;

[0019] Figure 2 It is a schematic structural diagram of the second perspective of the present utility model;

[0020] Figure 3 It is a schematic cross-sectional front view structural diagram of the filter plate of the present utility model;

[0021] Figure 4 It is a schematic top view structural diagram of the filter plate of the present utility model;

[0022] Figure 5 It is a schematic structural diagram at the support plate of the present utility model.

[0023] Explanation of reference numerals: 1, screw compressor body; 2, timing switch; 3, chassis; 4, cover plate; 5, cleaning assembly; 51, fixing plate; 52, recycling box; 53, limiting plate; 54, motor; 55, protection box; 56, reciprocating lead screw; 57, connecting plate; 58, sliding rod; 59, brush plate; 510, bristles; 511, convex block; 512, support plate; 6, liquid inlet pump; 7, filter plate; 8, support frame; 9, liquid outlet cover. Detailed implementation manners

[0024] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0025] It should be noted that the structures, ratios, sizes, etc. shown in the drawings of this specification are only used to cooperate with the content disclosed in the specification for those who are familiar with this technology to understand and read, and are not used to limit the limited conditions that can be implemented in this application. Therefore, they do not have technical essential meanings. Any modification of the structure, change of the proportional relationship or adjustment of the size, without affecting the effects that can be produced by this application and the purposes that can be achieved, should still fall within the scope that can be covered by the technical content disclosed in this application.

[0026] Embodiment

[0027] Please refer to Figures 1-5, the present utility model provides a technical solution: a screw compressor with timed lubrication, including a screw compressor body 1, the bottom of the screw compressor body 1 is connected to a machine case 3, a pair of mutually meshing spiral male and female rotors are installed inside the screw compressor body 1, both rotors have several concave teeth, and they rotate in opposite directions. The clearance between the rotors and between the casing and the rotors is only 5-10 silk, ensuring the tightness and efficiency of the compression process. When the rotors rotate, the thread space on the inlet side increases, forming a vacuum to suck in the gas. When the rotor groove of the screw passes through the suction port, the space reaches the maximum, and the outside air is inhaled and flows axially into the tooth grooves of the main and auxiliary rotors. As the rotors continue to rotate, the gas is trapped in the space between the rotor threads. During the compression process, lubricating oil is sprayed into the compression chamber to play a role in sealing, cooling and lubrication. When the gas is compressed to a high enough pressure, it is discharged into the system through the exhaust port, which is located on the other side of the rotor, where the thread space gradually increases to release the compressed gas;

[0028] On the inner wall of the machine case 3, two supporting frames 8 are fixed. On one side of the top of the supporting frame 8, a filter plate 7 is slidably connected through a slide rail. One side of the filter plate 7 is connected to a cover plate 4 bolted to one side of the machine case 3. The timing switch 2 sets the oil pumping time of the liquid inlet pump 6 and the working time of the motor 54. First, a certain amount of lubricating oil is injected into the machine case 3. Through the timing function of the timing switch 2, the screw compressor body 1 is lubricated through the liquid inlet pump 6. The timing switch 2 is installed on one side of the machine case 3, and a cleaning component 5 is arranged on one side of the machine case 3;

[0029] In order to facilitate the cleaning of the surface of the filter plate 7, a cleaning component 5 is provided. The cleaning component 5 includes a protective box 55 and a connecting plate 57. A brush plate 59 is hinged to the bottom of the connecting plate 57. The output shaft of the motor 54 drives the reciprocating lead screw 56 to rotate. The reciprocating lead screw 56 is threadedly connected to the connecting plate 57, so that the connecting plate 57 reciprocates along the slide bar 58 on the top of the filter plate 7. The bottom of the brush plate 59 is fixedly inserted with bristles 510 slidably connected to the top of the filter plate 7. The motor 54 is installed on the inner wall of the protective box 55. One side of the brush plate 59 is fixedly provided with a support plate 512, and one side of the bottom of the connecting plate 57 is fixedly provided with a convex block 511.

[0030] One side of the top of one of the support frames 8 is fixed with a limiting plate 53 located at one end of the filter plate 7. The limiting plate 53 is inclined, and the height near the recovery box 52 is higher than the height of the filter plate 7 to prevent lubricating oil from entering the interior of the recovery box 52. One side of the chassis 3 is threadedly connected with a fixing plate 51. One side of the fixing plate 51 is adhered with a sealing ring that fits against one side of the chassis 3. One side of the fixing plate 51 is fixed with a recovery box 52 that is slidably connected to the inner wall of the chassis 3 through a slide rail. The recovery box 52 is located at the bottom side of the limiting plate 53. A slide bar 58 is fixed to the inner wall of the chassis 3. The outer side of the slide bar 58 movably penetrates through one side of the connecting plate 57. When the connecting plate 57 moves to the left, at this time, under the thrust of the brush bristles 510 against the top of the filter plate 7, the support plate 512 abuts against the bottom of the convex block 511. At this time, the brush bristles 510 slide on the top of the filter plate 7, and the impurities blocked on the top of the filter plate 7 are pushed into the inner side of the recovery box 52.

[0031] The output shaft end of the motor 54 is fixed with a reciprocating lead screw 56. The outer side of the reciprocating lead screw 56 is threadedly connected to one side of the connecting plate 57. When the connecting plate 57 moves to the right, at this time, the brush plate 59 rotates around the hinge point with the connecting plate 57 under the sliding of the brush bristles 510 and the filter plate 7, so that the brush bristles 510 will not push the impurities on the top of the filter plate 7 to the right. One side of the top of the chassis 3 is installed with a liquid inlet pump 6 that communicates with the lubricating oil inlet end of the screw compressor body 1. The oil outlet end of the screw compressor body 1 is communicated with a liquid outlet cover 9 located on the top of the filter plate 7. A liquid outlet valve is installed on the liquid outlet cover 9. One side of the protective box 55 is fixed to the inner side wall of the chassis 3. One side of the protective box 55 is provided with a heat dissipation hole. The output end of the timing switch 2 is electrically connected to the input ends of the motor 54 and the liquid inlet pump 6 respectively. The liquid inlet end of the liquid inlet pump 6 is communicated with the bottom cavity of the filter plate 7 in the chassis 3.

[0032] The model of the timing switch 2 is: KG316T;

[0033] The model of the screw compressor body 1 is: MAS.

[0034] Working principle or structural principle: When the screw compressor body 1 is working, the oil pumping time of the liquid inlet pump 6 and the working time of the motor 54 are set by the timing switch 2. First, a certain amount of lubricating oil is injected into the chassis 3. Through the timing function of the timing switch 2, the screw compressor body 1 is lubricated by the liquid inlet pump 6. When the lubricated lubricating oil enters the multiple liquid outlet covers 9 through the liquid outlet valve, the lubricating oil drips onto the top of the filter plate 7. Under the action of the filter plate 7, the lubricating oil is filtered, and the impurities in the lubricating oil are blocked on the top of the filter plate 7. The filtered lubricating oil is lubricated on the screw compressor body 1 again under the action of the liquid inlet pump 6;

[0035] At this time, the timing switch 2 controls the operation of the motor 54 at regular intervals. The output shaft of the motor 54 drives the reciprocating lead screw 56 to rotate. The reciprocating lead screw 56 is threadedly connected to the connecting plate 57, causing the connecting plate 57 to reciprocate along the slide bar 58 on the top of the filter plate 7. When the connecting plate 57 moves to the left, under the thrust of the brush bristles 510 against the top of the filter plate 7, the support plate 512 abuts against the bottom of the bump 511. At this time, the brush bristles 510 slide on the top of the filter plate 7, pushing the impurities blocking the top of the filter plate 7 into the inside of the recovery box 52. At the same time, the limiting plate 53 is inclined, and the height near the recovery box 52 is higher than the height of the filter plate 7, preventing lubricating oil from entering the inside of the recovery box 52. When the connecting plate 57 moves to the right, at this time, the brush plate 59 rotates around the hinge point with the connecting plate 57 under the sliding of the brush bristles 510 and the filter plate 7, so that the brush bristles 510 do not push the impurities on the top of the filter plate 7 to the right. Driven by the reciprocating lead screw 56, the connecting plate 57 can drive the brush bristles 510 to reciprocate on the filter plate 7. The brush bristles 510 can push the impurities on the top of the filter plate 7 into the recovery box 52, preventing impurities from accumulating on the filter plate 7 and maintaining the filtering efficiency of the filter plate 7;

[0036] The staff only needs to regularly remove the bolts on one side of the fixing plate 51, take out the recovery box 52, and clean the impurities inside the recovery box 52. When the surface of the filter plate 7 is damaged and needs to be replaced, only the bolts on one side of the cover plate 4 need to be removed, and the cover plate 4 is pulled to drive the filter plate 7 to slide inside the track groove of the slide rail, so that the filter plate 7 leaves the inside of the chassis 3. At this time, the filter plate 7 can be easily replaced. When the surface of the filter plate 7 is damaged and needs to be replaced, the staff only needs to remove the bolts on one side of the cover plate 4 and pull the cover plate 4, then the filter plate 7 can slide along the track groove of the slide rail, thus easily taking out the filter plate 7 from the inside of the chassis 3, making the replacement of the filter plate 7 simple and fast, reducing the downtime and maintenance cost.

[0037] Those skilled in the art can understand that the features recited in the various embodiments and / or claims of the present invention can be combined or combined in various ways, even if such combinations or combinations are not explicitly recited in the present invention. In particular, without departing from the spirit and teachings of the present invention, the features recited in the various embodiments and / or claims of the present invention can be combined and combined in various ways. All such combinations and / or combinations fall within the scope of the present invention.

Claims

1. A timed lubrication screw compressor, comprising a screw compressor body (1), characterized in that: The bottom of the screw compressor body (1) is connected to a case (3), two support frames (8) are fixed to the inner wall of the case (3), one side of the top of the support frame (8) is slidably connected to a filter plate (7) via a slide rail, one side of the filter plate (7) is connected to a cover plate (4) connected to one side of the case (3) via bolts, a timing switch (2) is installed on one side of the case (3), and a cleaning component (5) is provided on one side of the case (3); The cleaning assembly (5) comprises a protective box (55) and a connecting plate (57), the bottom of the connecting plate (57) being hinged with a brush plate (59), the bottom of the brush plate (59) being fixedly inserted with bristles (510) which are slidably connected to the top of the filter plate (7), the inner wall of the protective box (55) being mounted with a motor (54), one side of the brush plate (59) being fixed with a support plate (512), and one side of the bottom of the connecting plate (57) being fixed with a protrusion (511).

2. A timed lubrication screw compressor according to claim 1, characterized in that: A limiting plate (53) located at one end of the filter plate (7) is fixed to one side of the top of one of the support frames (8), and a fixing plate (51) is threadedly connected to one side of the chassis (3).

3. A timed lubrication screw compressor according to claim 2, characterized in that: A sealing ring is bonded to one side of the fixing plate (51) and is attached to one side of the chassis (3). A recovery box (52) is fixed to one side of the fixing plate (51) and is slidably connected to the inner wall of the chassis (3) via a slide rail. The recovery box (52) is located at one side of the bottom of the limiting plate (53).

4. A timed lubrication screw compressor according to claim 3, characterized in that: A sliding rod (58) is fixed to the inner wall of the chassis (3), and the outer side of the sliding rod (58) movably penetrates one side of the connecting plate (57).

5. A timed lubrication screw compressor according to claim 4, characterized in that: A reciprocating screw rod (56) is fixed to the output shaft end of the motor (54), and the outer side of the reciprocating screw rod (56) is threadedly connected to one side of the connecting plate (57).

6. A timed lubrication screw compressor according to claim 5, characterized in that: A liquid inlet pump (6) connected to the lubricating oil inlet end of the screw compressor body (1) is installed on one side of the top of the chassis (3), and the oil outlet end of the screw compressor body (1) is connected to a liquid outlet cover (9) located on the top of the filter plate (7).

7. A timed lubrication screw compressor according to claim 6, characterized in that: One side of the protection box (55) is fixed to the inner wall of the chassis (3), and a heat dissipation hole is opened on one side of the protection box (55). The output end of the timing switch (2) is electrically connected to the input end of the motor (54) and the liquid inlet pump (6).

Images