Compressor

Abstract

The present invention provides a compressor, which includes a compression part, a driving part and a closing part. The compression part is provided with an air inlet for sucking external air flow inward and an air outlet for discharging compressed air flow outward. The driving part is fixedly arranged on the compression part, the compression part and the driving part are communicated, the driving end of the driving part extends into the compression part and drives the compression part to operate, and the closing part is fixedly arranged at the air outlet of the compression part, and the closing part controls the air outlet to be in an open state or a closed state. For the compressor of the present invention, through the arrangement of the closing part, it can be ensured that the air supply can be automatically stopped after the pressure value in the equipment for transporting compressed gas reaches a certain value. Through the communication arrangement of the driving part and the compression part, the occupied space of the compressor can be reduced, the use of dynamic seals can also be reduced, and the service life of the compressor can be improved.

Description

Technical Field

[0001] The present invention relates to the technical field of compression equipment, and particularly to a compressor. Background Art

[0002] The function of a compressor is to lift low-pressure gas to high-pressure gas, and it is mainly divided into piston compressors, screw compressors, centrifugal compressors, linear compressors, etc. The composition structure of a screw compressor is a housing, a motor, a female screw, and a male screw. The housing, the female screw, and the male screw can form a compression part, and the compression part is driven by the motor to compress into high-pressure gas.

[0003] With the development, the function of the compressor is becoming more and more extensive, and its functions are applied in chemical process applications, power engineering applications, and gas transportation applications. In the chemical process, to ensure that certain processes react under higher pressures, the gas is usually compressed to a certain pressure. For example, the hydrogenation process requires that hydrogen be compressed to a very high pressure, and it is necessary to ensure that the equipment maintains a certain pressure.

[0004] The existing compressor cannot automatically control the opening and closing when delivering compressed gas outward. It can only control the opening and closing of the compressor through a sensor, thereby controlling the pressure in the entire equipment. However, the sensor can only be set within a certain range to control the opening and closing of the compressor, and cannot keep the entire equipment at a certain pressure. In addition, since the compressor needs to operate for a long time, and the sensor is a precision device, long-term operation is likely to cause equipment damage, unable to control the opening and closing of the compressor, and thus unable to control the pressure of the entire equipment. Summary of the Invention

[0005] The purpose of the present invention is to provide a compressor to solve the problem that the existing compressor cannot ensure a stable pressure value in the entire equipment during operation.

[0006] To achieve the above object, the technical solution of the present invention is realized as follows:

[0007] A compressor, comprising:

[0008] A compression part, on which an air inlet for sucking external air flow inward and an air outlet for discharging compressed air flow outward are provided; a driving part, fixedly arranged on the compression part, the compression part and the driving part are communicated, and the driving end of the driving part extends into the compression part and drives the compression part to operate; an opening and closing part, fixedly arranged at the air outlet of the compression part, and the opening and closing part controls the air outlet to be in an open state or a closed state.

[0009] Further, the opening and closing part includes a casing communicatively arranged at the air outlet, a first sealing plate that divides the casing into an upper cavity and a lower cavity, and a driving component that drives the first sealing plate to move. The lower cavity is communicatively arranged with the air outlet, and the upper cavity is provided with an air outlet interface.

[0010] Further, the driving component includes a piston cylinder arranged on the casing, a piston block slidably arranged in the piston cylinder, and a sliding shaft fixedly arranged on the first sealing plate. The sliding shaft penetrates through the casing and reciprocally slides in the casing. The piston block is fixedly arranged on the sliding shaft. The lower cavity is communicatively arranged with the piston cylinder through a pipeline, and the piston block reciprocally slides in the piston cylinder driven by compressed air flow.

[0011] Further, an elastic component for adjusting the pressure of the sliding shaft is arranged on the piston cylinder.

[0012] Further, the elastic component includes a threaded cylinder fixedly arranged on the piston cylinder, a first round sleeve screwed with the threaded cylinder, and a spring arranged between the piston block and the first round sleeve. The spring is sleeved on the sliding shaft.

[0013] Further, a pressure sleeve is arranged on the inner circumference of the first round sleeve. The pressure sleeve abuts against the top of the spring, and a sealing ring is arranged between the pressure sleeve and the spring.

[0014] Further, an auxiliary opening and closing component for separating the upper cavity and the lower cavity is arranged on the opening and closing part;

[0015] And / or, the auxiliary opening and closing component includes a telescopic rod slidably arranged in the sliding shaft and axially arranged along the sliding shaft, a second sealing plate fixedly arranged at one end of the telescopic rod extending out of the first sealing plate, and a second round sleeve rotatably arranged at one end of the telescopic rod away from the second sealing plate. The second round sleeve is screwed with one end of the sliding shaft away from the first sealing plate.

[0016] Further, a fixing plate is arranged at one end of the telescopic rod away from the second sealing plate, and a circular groove for rotating on the fixing plate is arranged on the second round sleeve.

[0017] Further, a sliding groove for the sliding shaft to reciprocally slide is arranged on the casing. A key groove and a key block that cooperate with each other are arranged on the sliding groove and the sliding shaft, and the key block slidably cooperates in the key groove; and / or a through groove is axially arranged on the sliding shaft, and the telescopic rod reciprocally slides in the through groove. The same key groove and key block as above are arranged on the through groove and the telescopic rod.

[0018] Furthermore, the positions where the driving part and the compression part are in contact are provided with openings that communicate with each other, and the driving end is connected through a bearing inside the compression part.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] For the compressor of the present invention, through the setting of the opening and closing part, it can be ensured that the air supply stops automatically after the pressure value in the equipment being transported with compressed gas reaches a certain value. Through the connected setting of the driving part and the compression part, the space occupied by the compressor can be reduced, the use of dynamic seals can also be reduced, and the service life of the compressor can be improved.

[0021] In addition, through the setting of the first sealing plate, the machine shell can be divided into an upper cavity and a lower cavity, thereby blocking the continuous output of compressed gas. Through the cooperative setting of the piston cylinder and the piston block, it is ensured that the piston block can drive the first sealing plate to open or close, thereby realizing the stop of air supply. At the same time, through the connected setting of the lower cavity and the piston cylinder, it can be ensured that the first sealing plate automatically closes when the pressure values inside the compressor and in the external equipment are the same. Through the setting of the spring, downward pressure is provided for the first sealing plate, thereby controlling the opening or closing of the opening and closing part at different pressure values.

[0022] In addition, through the cooperative setting of the telescopic rod and the second sealing plate, the closing of the opening and closing part can be manually adjusted, thereby improving the safety of the compressor. Through the cooperative setting of the second cylinder and the telescopic rod, it can be ensured that the first compression plate and the second compression plate move simultaneously. Through the setting of the key groove and the key block, it can be ensured that the sliding rod and the telescopic rod can only move up and down, preventing the sliding rod and the telescopic rod from rotating. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The drawings constituting a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention. In the drawings:

[0024] Figure 1 is a schematic diagram of the overall structure of the compressor according to the embodiment of the present invention;

[0025] Figure 2 is a disassembled schematic diagram of the driving part and the compression part according to the embodiment of the present invention;

[0026] Figure 3 is a schematic diagram of the structure of the opening and closing part according to the embodiment of the present invention;

[0027] Figure 4 is another perspective schematic diagram of the opening and closing part according to the embodiment of the present invention;

[0028] Figure 5 is a cross-sectional view of the opening and closing part according to the embodiment of the present invention;

[0029] Figure 6 Schematic exploded view of the opening and closing part described in the embodiment of the present invention;

[0030] Figure 7 Schematic exploded view of the driving component and the elastic component described in the embodiment of the present invention;

[0031] Figure 8 Cross-sectional view of the opening and closing part described in the embodiment of the present invention;

[0032] Figure 9 Cross-sectional view of the driving component and the elastic component described in the embodiment of the present invention;

[0033] Figure 10 Cross-sectional view of the auxiliary opening and closing part described in the embodiment of the present invention.

[0034] Explanation of reference numerals:

[0035] 1. Compression part; 101. Air inlet; 102. Air outlet;

[0036] 2. Driving part; 201. Opening;

[0037] 3. Opening and closing part; 301. Machine shell; 302. Upper cavity; 303. Lower cavity; 304. First sealing plate; 305. Driving component; 3051. Piston cylinder; 3052. Piston block; 3053. Sliding shaft;

[0038] 306. Elastic component; 3061. Threaded cylinder; 3062. First round sleeve; 3063. Spring; 3064. Pressure sleeve; 3065. Sealing ring;

[0039] 307. Sliding groove; 308. Key groove; 309. Key block; 310. Through groove;

[0040] 4. Auxiliary opening and closing component; 401. Telescopic rod; 402. Second sealing plate; 403. Second round sleeve; 404. Fixed plate; 405. Round groove. Detailed implementation manners

[0041] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments can be combined with each other.

[0042] In the description of the present invention, it should be noted that if terms indicating orientation or positional relationship such as "upper", "lower", "inner", "back", etc. appear, they are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention. In addition, if terms such as "first", "second", etc. appear, they are also only for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0043] In addition, in the description of the present invention, unless otherwise clearly defined, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood in combination with specific situations.

[0044] The present invention will be described in detail below with reference to the drawings and in conjunction with embodiments.

[0045] This embodiment relates to a compressor. In terms of the overall structure, as Figure 1 and Figure 2 shown, it includes a compression part 1, a driving part 2, and a closing part 3.

[0046] Among them, an air inlet 101 for sucking external air flow inward and an air outlet 102 for discharging compressed air flow outward are provided on the compression part 1. The driving part 2 is fixedly arranged on the compression part 1, and the compression part 1 and the driving part 2 are communicated. The driving end of the driving part 2 extends into the compression part 1 and drives the compression part 1 to operate. The closing part 3 is fixedly arranged at the air outlet 102 of the compression part 1, and the closing part 3 controls the air outlet 102 to be in an open state or a closed state.

[0047] It is worth mentioning that the above driving part 2 can preferably adopt an electric motor, and the compression part 1 can preferably adopt a screw compressor. The position where the driving part 2 and the compression part 1 are in contact is provided with an interconnected opening 201, and the driving end is connected through a bearing inside the compression part 1. Such a setting can avoid the friction between the compressor drive shaft and the seal, and can also reduce the friction between the electric motor drive shaft and the seal. Moreover, the inside of the compressor and the inside of the electric motor are connected, enabling the cooling oil in the compressor to flow into the electric motor to cool the electric motor, and the connection between the compressor and the electric motor can be hermetically connected by a flange to prevent the leakage of cooling oil.

[0048] Based on the above overall introduction, an exemplary structure of the compressor in this embodiment is shown in Figure 3 , Figure 4 andFigure 5 As shown in the figure, the opening and closing part 3 includes a casing 301 communicatively arranged at the air outlet 102, a first sealing plate 304 that divides the casing 301 into an upper chamber 302 and a lower chamber 303, and a driving assembly 305 that drives the first sealing plate 304 to move. The lower chamber 303 is communicatively arranged with the air outlet 102, and the upper chamber 302 is provided with an air outlet interface.

[0049] It should be noted that after the compressed gas enters the lower chamber 303, due to the high pressure, the first sealing plate 304 will be pushed up. At this time, the upper chamber 302 and the lower chamber 303 are communicated, and then it is discharged from the air outlet interface of the upper chamber 302. The function of the driving assembly 305 is that after exceeding the pressure value set by the driving assembly 305, the first sealing plate 304 is opened under the action of the pressure. When the pressure value of the lower chamber 303 is small or the same as the pressure value of the upper chamber 302, the first sealing plate 304 is in a sealed state between the upper chamber 302 and the lower chamber 303.

[0050] Preferably, as Figure 5 、 Figure 6 and Figure 7 shown, in this embodiment, the driving assembly 305 includes a piston cylinder 3051 arranged on the casing 301, a piston block 3052 slidably arranged in the piston cylinder 3051, and a sliding shaft 3053 fixedly arranged on the first sealing plate 304. The sliding shaft 3053 reciprocally slides in the casing 301 after passing through the casing 301. The piston block 3052 is fixedly arranged on the sliding shaft 3053. The lower chamber 303 is communicatively arranged with the piston cylinder 3051 through a pipeline, and the piston block 3052 reciprocally slides in the piston cylinder 3051 under the drive of the compressed air flow.

[0051] Specifically, the compressed gas in the upper chamber 302 can enter the piston cylinder 3051. When the pressure in the upper chamber 302 is greater than the pressure in the lower chamber 303, the compressed gas entering the piston cylinder 3051 pushes the piston block 3052 downward. Since the piston block 3052 is fixed on the sliding shaft 3053, the sliding shaft 3053 is driven to descend, thereby controlling the first sealing plate 304 to separate the upper chamber 302 and the lower chamber 303. Of course, a partition plate is arranged around the inner wall between the upper chamber 302 and the lower chamber 303. The first sealing plate 304 separates the upper chamber 302 and the lower chamber 303 by abutting against the partition plate. When the pressure in the lower chamber 303 is greater than the pressure in the upper chamber 302, the compressed gas pushes the first sealing plate 304 open, that is, the compressed gas enters the upper chamber 302 and is discharged from the air outlet interface.

[0052] Still preferably, as Figure 8 and Figure 9As shown in the figure, an elastic component 306 for adjusting the pressure of the sliding shaft 3053 is provided on the piston cylinder 3051 of this embodiment. Among them, the elastic component 306 includes a threaded cylinder 3061 fixedly arranged on the piston cylinder 3051, a first round sleeve 3062 screwed to the threaded cylinder 3061, and a spring 3063 arranged between the piston block 3052 and the first round sleeve 3062. The spring 3063 is sleeved on the sliding shaft 3053. Of course, a pressure sleeve 3064 is arranged on the inner circumference of the first round sleeve 3062. The pressure sleeve 3064 abuts against the top of the spring 3063, and a sealing ring 3065 is arranged between the pressure sleeve 3064 and the spring 3063.

[0053] Specifically, the spring 3063 slides between the threaded cylinder 3061 and the sliding shaft 3053. When the first round sleeve 3062 moves up and down on the threaded cylinder 3061, the pressure sleeve 3064 on the first round sleeve 3062 moves up and down between the threaded cylinder 3061 and the sliding shaft 3053. Since the lower end of the spring 3063 abuts against the piston block 3052, the movement of the pressure sleeve 3064 can adjust whether the spring 3063 is compressed downward or released upward. Moving downward can increase the downward acting force of the piston block 3052. That is to say, only when the pressure in the lower chamber 303 is greater than the force of the spring 3063 and the force in the upper chamber 302 can the first sealing plate 304 be opened. On the contrary, the first sealing plate 304 and the partition are in a sealed state. Of course, the piston cylinder 3051 needs to be in a sealed state. Therefore, the sealing ring 3065 can prevent the compressed gas from leaking out from the threaded cylinder 3061.

[0054] As a preferred implementation manner, as Figure 10 shown in the figure, in this embodiment, the opening and closing part 3 is provided with an auxiliary opening and closing component 4 that separates the upper chamber 302 and the lower chamber 303. The auxiliary opening and closing component 4 includes a telescopic rod 401 slidably arranged in the sliding shaft 3053 and axially arranged along the sliding shaft 3053, a second sealing plate 402 fixedly arranged at one end of the telescopic rod 401 extending out of the first sealing plate 304, and a second round sleeve 403 rotatably arranged at one end of the telescopic rod 401 away from the second sealing plate 402. The second round sleeve 403 is screwed to the end of the sliding shaft 3053 away from the first sealing plate 304.

[0055] It should be noted that the second circular sleeve 403 passes through the first circular sleeve 3062 and is hermetically arranged with the first circular sleeve 3062, which can also prevent the compressed gas in the piston cylinder 3051 from leaking out. The second circular sleeve 403 can also slide within the first circular sleeve 3062. Such an arrangement can ensure that when the sliding shaft 3053 moves, the telescopic rod 401 can move accordingly, and the second circular sleeve 403 can control the telescopic rod 401 to slide within the sliding shaft 3053. That is to say, the first sealing plate 304 can move following the second sealing plate 402, or when the first sealing plate 304 is opened, the second sealing plate 402 can move independently, that is, the second sealing plate 402 descends to seal with the partition plate, preventing the external device from continuously increasing the pressure. Of course, another function is to control the distance between the second sealing plate 402 and the partition plate, thereby ensuring the efficiency of the compressed gas flowing into the upper cavity 302.

[0056] Preferably, still as Figure 10 shown, at one end of the telescopic rod 401 away from the second sealing plate 402 in this embodiment, a fixing plate 404 is provided, and a circular groove 405 for rotation on the fixing plate 404 is provided on the second circular sleeve 403. Specifically, the fixing plate 404 is circular and can be hermetically arranged with the circular groove 405 to ensure that the compressed gas does not leak out. At the same time, it can be seen that the second circular sleeve 403 and the telescopic rod 401 are connected by a rotating shaft. When the second circular sleeve 403 moves up and down along the rotating shaft, it can drive the telescopic rod 401 to lift and lower within the sliding shaft 3053.

[0057] Still preferably, as Figure 6 and Figure 7 shown, in this embodiment, a sliding groove 307 for the reciprocating sliding of the sliding shaft 3053 is provided on the machine case 301. Key grooves 308 and key blocks 309 that cooperate with each other are provided on the sliding groove 307 and the sliding shaft 3053. The key block 309 slides in cooperation within the key groove 308. A through groove 310 is axially provided on the sliding shaft 3053, and the telescopic rod 401 reciprocates within the through groove 310. The same key grooves 308 and key blocks 309 are provided on the through groove 310 and the telescopic rod 401.

[0058] Specifically, the key groove 308 can be cut into a plane on the outer wall of the fixed shaft and the outer wall of the telescopic rod 401, and another plane that fits the plane can be added to the inner walls of the through groove 310 and the sliding groove 307. The fitting of the two planes can ensure that the sliding shaft 3053 and the telescopic rod 401 can only perform lifting and lowering movements during sliding, avoiding rotation.

[0059] For the compressor described in this embodiment, through the setting of the opening and closing part 3, it can be ensured that the air supply stops automatically after the pressure value in the device being supplied with compressed gas reaches a certain value. Through the connected setting of the driving part 2 and the compression part 1, the occupied space of the compressor can be reduced, the use of dynamic seals can be reduced, and the service life of the compressor can be improved.

[0060] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A compressor, characterized in that, Comprising: A compression part (1) provided with an air inlet (101) for sucking external air flow inward and an air outlet (102) for discharging compressed air flow outward; A driving part (2) fixedly arranged on the compression part (1), the compression part (1) is communicated with the driving part (2), and the driving end of the driving part (2) extends into the compression part (1) and drives the compression part (1) to operate; An opening and closing part (3) fixedly arranged at the air outlet (102) of the compression part (1), and the opening and closing part (3) controls the air outlet (102) to be in an open state or a closed state; The opening and closing part (3) includes a casing (301) communicated at the air outlet (102), a first sealing plate (304) dividing the casing (301) into an upper cavity (302) and a lower cavity (303), and a driving component (305) for driving the first sealing plate (304) to move. The lower cavity (303) is communicated with the air outlet (102), and the upper cavity (302) is provided with an air outlet interface; The driving component (305) includes a piston cylinder (3051) arranged on the casing (301), a piston block (3052) slidably arranged in the piston cylinder (3051), and a sliding shaft (3053) fixedly arranged on the first sealing plate (304). The sliding shaft (3053) penetrates through the casing (301) and reciprocates and slides in the casing (301), and the piston block (3052) is fixedly arranged on the sliding shaft (3053); The lower cavity (303) is communicated with the piston cylinder (3051) through a pipeline, and the piston block (3052) reciprocates and slides in the piston cylinder (3051) driven by compressed air flow; The opening and closing part (3) is provided with an auxiliary opening and closing component (4) for separating the upper cavity (302) and the lower cavity (303); The auxiliary opening and closing component (4) includes a telescopic rod (401) slidably arranged in the sliding shaft (3053) and axially arranged along the sliding shaft (3053), a second sealing plate (402) fixedly arranged at one end of the telescopic rod (401) extending out of the first sealing plate (304), and a second circular sleeve (403) rotatably arranged at one end of the telescopic rod (401) away from the second sealing plate (402). The second circular sleeve (403) is screwed to the end of the sliding shaft (3053) away from the first sealing plate (304).

2. The compressor according to claim 1, wherein: The piston cylinder (3051) is provided with an elastic component (306) for adjusting the pressure of the sliding shaft (3053).

3. The compressor according to claim 2, wherein: The elastic component (306) includes a threaded cylinder (3061) fixedly arranged on the piston cylinder (3051), a first round sleeve (3062) screwed to the threaded cylinder (3061), and a spring (3063) arranged between the piston block (3052) and the first round sleeve (3062). The spring (3063) is sleeved on the sliding shaft (3053).

4. The compressor according to claim 3, wherein: An inner circumferential surface of the first round sleeve (3062) is provided with a pressure sleeve (3064). The pressure sleeve (3064) abuts against the top of the spring (3063), and a sealing ring (3065) is arranged between the pressure sleeve (3064) and the spring (3063).

5. The compressor according to claim 1, wherein: One end of the telescopic rod (401) away from the second sealing plate (402) is provided with a fixing plate (404), and a circular groove (405) for rotation on the fixing plate (404) is provided on the second round sleeve (403).

6. The compressor according to claim 1, wherein: The machine shell (301) is provided with a sliding groove (307) for the reciprocating sliding of the sliding shaft (3053). A key groove (308) and a key block (309) which are matched with each other are arranged on the sliding groove (307) and the sliding shaft (3053), and the key block (309) is in sliding fit in the key groove (308); and / or, a through groove (310) is axially arranged on the sliding shaft (3053). The telescopic rod (401) reciprocates and slides in the through groove (310), and the same key groove (308) and key block (309) as those above are arranged on the through groove (310) and the telescopic rod (401).

7. The compressor according to any one of claims 1-6, wherein: A position where the driving part (2) contacts the compression part (1) is provided with an opening (201) communicated with each other, and the driving end is connected through a bearing in the compression part (1).

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