Vacuum compression all-in-one machine structure assembly

Abstract

The utility model belongs to the field of mechanical fluid, and provides a structure assembly of a vacuum compression all-in-one machine, which comprises a shell with a plurality of air inlets, and a crankshaft movably arranged in the shell; the first compression unit and the second compression unit are movably arranged in the shell in the axis direction of the crankshaft, a first sealing ring is arranged between the first compression unit and the shell so that a compression cavity can be formed in the shell, and a second sealing ring is arranged between the first compression unit and the second compression unit so that the compression cavity can be formed in the shell. And a vacuumizing cavity formed in the shell is isolated from a compression cavity. Compared with the prior art, the device has the advantages that the vacuumizing chamber and the compression chamber are stably isolated through the two sealing rings, and the two compression units are synchronously driven by the crankshaft to swing in the radial direction, so that the device can realize compression and vacuumizing operation at the same time; the requirements of compressed oxygen generation and vacuum analysis on the VPSL oxygen generator can be met, and the stability and reliability in the running process are ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of mechanical fluid, concretely relates to a vacuum compression all -in -one structure assembly. BACKGROUND

[0002] Traditional vacuum compression equipment plays a vital role in industrial applications, and they are widely used in various scenes, such as gas delivery, oxygen concentration in oxygen generator, gas treatment in chemical production process, etc. However, the traditional solution usually relies on independent vacuum pumps and compressors to complete the vacuum pumping and gas compression operation respectively, due to the need to separately configure vacuum pumps and compressors, the design of the whole system becomes more complex, including additional pipeline connection, control system integration and possible cooling requirements, so that this separated design not only increases the complexity and cost of the system, but also leads to the overall equipment bulky, limiting its application in limited space environment. SUMMARY

[0003] In view of the above shortcomings of the prior art, the technical problem to be solved by the utility model is to provide a vacuum compression all-in-one machine structure assembly which is compact in overall structure, realizes compression and vacuum pumping simultaneously, and improves reliability.

[0004] The utility model solves the technical problems by adopting the technical scheme of providing a vacuum compression all-in-one machine structure assembly, comprising: a shell body with a plurality of gas inlets, a crankshaft movably arranged in the shell body;

[0005] A first compression unit and a second compression unit are movably arranged in the shell body along the crankshaft axis direction, a first sealing ring is arranged between the first compression unit and the shell body to form a compression chamber in the shell body, and a second sealing ring is arranged between the first compression unit and the second compression unit to separate the vacuum pumping chamber formed in the shell body from the compression chamber;

[0006] An elastic member is arranged in the shell body; wherein,

[0007] The first compression unit and the second compression unit both have a gas suction compression state and an exhaust state, and the working states of the two are different, each compression unit is provided with a dynamic disc, a suction inlet and an exhaust port, the dynamic disc is sleeved on the outer side wall of the crankshaft and swings in the sealing shell along the radial direction parallel to the crankshaft under the driving of the crankshaft, for compressing the working gas entering each compression unit from the suction inlet; The compression chamber and the vacuum pumping chamber both have the suction inlet and the gas inlet communicated with each other, and the gas in the compression chamber and the vacuum pumping chamber is prevented from communicating with each other by the second sealing ring.

[0008] One end of the elastic member along the direction of elastic deformation abuts against the second compression unit, for preventing the runner from rotating along the axis direction of itself.

[0009] In the vacuum compression all-in-one machine structure assembly, the first compression unit and the second compression unit each further comprises:

[0010] The static disc is arranged on the shell, and a containing cavity is formed in the static disc, a guide portion is arranged on the side wall of the containing cavity, and the guide portion is integrally formed with the static disc or arranged separately from the static disc, and the suction inlet and the exhaust outlet extend to the guide portion and are connected to the containing cavity;

[0011] The runner is swingably arranged in the containing cavity and divides the containing cavity into a first outer cavity and a second outer cavity in active communication, a moving portion is arranged on the runner, the moving portion is in active connection with the guide portion, and a first inner cavity and a second inner cavity are formed between the moving portion and the guide portion, the first outer cavity and the first inner cavity are in active communication, and the second outer cavity and the second inner cavity are in active communication.

[0012] In the vacuum compression all-in-one machine structure assembly, the elastic member is a metal bellows.

[0013] In the vacuum compression all-in-one machine structure assembly, the moving portion has a first blocking portion and a second blocking portion which are in active abutment with the suction inlet and the exhaust outlet respectively.

[0014] In the vacuum compression all-in-one machine structure assembly, the two ends of the crankshaft are each provided with a counterweight, and the counterweight can rotate synchronously with the crankshaft in the shell.

[0015] In the vacuum compression all-in-one machine structure assembly, the static disc is integrally formed with the shell or arranged separately from the shell, and a ring-shaped sealing ring is arranged between the static disc and the shell when the static disc is arranged separately from the shell.

[0016] In the vacuum compression all-in-one machine structure assembly, the two runners on the first compression unit and the second compression unit are integrally arranged or arranged separately.

[0017] In the vacuum compression all-in-one machine structure assembly, the runners are each provided with an extension along the axis direction of the crankshaft, and bearings are arranged between the extension and the shell and between the extension and the crankshaft.

[0018] In the vacuum compression all-in-one machine structure assembly, a wear-resistant coating is arranged on the surface of the runner.

[0019] In the vacuum compression all-in-one machine structure assembly, the runner and the static disc are each made of metal material or high polymer material.

[0020] Compared with the prior art, the vacuum compression all-in-one machine structure assembly has the following beneficial effects:

[0021] (1) The vacuum compression all-in-one machine structure assembly realizes stable isolation of the vacuumizing chamber and the compression chamber through two sealing rings, utilizes one crankshaft to synchronously drive two compression units to swing in the radial direction, so that the device can simultaneously realize compression and vacuumizing operation, the overall structure is compact, can not only meet the needs of compression oxygen production and vacuum resolution on the VPSL oxygen generator, but also ensures the stability and reliability in the running process.

[0022] (2) The corrugated pipe can provide stable pulling force or pushing force for the dynamic disc, and also plays a sealing shielding role for the whole air compression all-in-one machine structure.

[0023] (3) The stability of the crankshaft in rotation is significantly improved through the mass distribution of the two counterweights, so that the device can better resist external interference and self-vibration in the running process, and the reliability and durability of the machine are improved. BRIEF DESCRIPTION OF DRAWINGS

[0024] Figure 1 is a perspective view of the present application;

[0025] Figure 2 is Figure 1 a sectional view of A-A in the figure;

[0026] Figure 3 is Figure 1 a right view of the figure;

[0027] Figure 4 is Figure 3 a sectional view of B-B in the figure;

[0028] Figure 5 is a structural schematic view of the first compression unit;

[0029] Figure 6 is a structural schematic view of the second compression unit;

[0030] Figure 7 is Figure 6 an explosion view between the dynamic disc and the static disc in the figure.

[0031] In the figure, 1, the shell; 10, the air inlet; 11, the crankshaft; 12, the compression chamber; 13, the vacuumizing chamber; 14, the counterweight; 15, the annular sealing ring; 16, the bearing;

[0032] 2, the first compression unit;

[0033] 3, the second compression unit;

[0034] 40, first sealing ring; 41, second sealing ring; 42, moving disc; 420, moving part; 420a, first blocking part; 420b, second blocking part; 421, first inner cavity; 422, second inner cavity; 423, extension part; 43, suction inlet; 44, exhaust port; 45, static disc; 450, accommodating cavity; 451, guiding part; 452, first outer cavity; 453, second outer cavity;

[0035] 5, elastic member. DETAILED DESCRIPTION

[0036] The following is a specific embodiment of the present application and in conjunction with the drawings, the technical solutions of the present application are further described, but the present application is not limited to these embodiments.

[0037] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative position relationship, movement condition, etc. between the components in a certain specific posture (as shown in the drawings), if the specific posture changes, the directional indications will also change accordingly.

[0038] As Figures 1 to 7 shown, the utility model discloses a vacuum compression integrated machine structure assembly, include: the casing 1 of a plurality of air inlets 10, the crankshaft 11 is movably arranged in the casing 1, first compression unit 2 and second compression unit 3 are movably arranged in the casing 1 along the axial direction of the crankshaft 11, first compression unit 2 and the casing 1 between the first sealing ring 40 is arranged to form a compression chamber 12 in the casing 1, first compression unit 2 and second compression unit 3 between the second sealing ring 41 is arranged to isolate the vacuum chamber 13 formed in the casing 1 from the compression chamber 12, the elastic member 5 arranged in the casing 1, wherein, first compression unit 2 and second compression unit 3 all have suction compression state and exhaust state, and the working state between the two is different, each compression unit is provided with moving disc 42, suction inlet 43 and exhaust port 44, moving disc 42 is sleeved on the outer side wall of the crankshaft 11 and is swung in the sealing casing 1 under the driving of the crankshaft 11 along the radial direction parallel to the crankshaft 11, for compressing the working gas entering each compression unit from the suction inlet 43, the compression chamber 12 and the vacuum chamber 13 all have the suction inlet 43 and the air inlet 10 that communicate with each other, and the gas in the compression chamber 12 and the vacuum chamber 13 is prevented from communicating with each other by the second sealing ring 41, the elastic member 5 is abutted on the second compression unit 3 along the direction of the elastic deformation of the elastic member 5, for preventing the moving disc 42 from producing autorotation along the axial direction of itself.

[0039] This embodiment uses a single pump to achieve two compression stages through a surface seal. The housing 1 (which has a certain degree of sealing) houses a first compression unit 2 (for compression) and a second compression unit 3 (for vacuuming). Of course, the number of compression units can be two or more. Unlike traditional structures, such as... Figures 1 to 7 As shown, the first compression unit 2 is not only provided with a first sealing ring 40 between itself and the housing 1, but also with a second sealing ring 41 between itself and the second compression unit 3. It is precisely because of the surface sealing effect of these two sealing rings on the first compression unit 2 and the second compression unit 3 that the working gases in the two compression units are not interconnected within the housing 1 (i.e., the formed compression chamber 12 and vacuum chamber 13 are sealed and isolated by the two surface-to-surface sealing rings). Therefore, when the crankshaft 11 starts to rotate under the drive of a motor (which can be replaced by a stepper motor, servo motor, or other drive devices), it drives the moving disk 42, which is located on its outer side wall, to swing in a direction parallel to the radial direction of the crankshaft 11. In the first compression unit 2, as the moving disk 42 swings, the suction port 43 connects with the air inlet 10 on the housing 1. (See reference...) Figures 3 to 5 As indicated by the arrow, external gas is allowed to enter the compression chamber 12 and be discharged through the exhaust port 44 on the first compression unit 2 after compression. Similarly, in the second compression unit 3, the moving disk 42 also uses a similar mechanism (different from the movement state of the moving disk 42 in the first compression unit 2) to draw external gas into the vacuum chamber 13 through the intake port 43 in the second compression unit 3, and compresses it to reach a predetermined vacuum level. Finally, it is discharged through the exhaust ports 44 on both sides of the second compression unit 3. At this time, the second sealing ring 41 between the two compression units ensures that the gases in the two chambers do not mix with each other, so that the two compression stages can achieve one compression and one vacuum, ensuring that the needs of compression oxygen production and vacuum desorption on the VPSL oxygen generator can be met.

[0040] Both the first compression unit 2 and the second compression unit 3 further include: a stationary disc 45, which is disposed on the housing 1. The stationary disc 45 has a cavity 450 inside. The side wall of the cavity 450 is provided with a guide portion 451. The guide portion 451 is integrally formed with the stationary disc 45 or is separately disposed. The suction port 43 and the exhaust port 44 both extend toward the guide portion 451 and are connected to the cavity 450; a moving disc 42 is oscillatingly disposed in the cavity 450 and divides the cavity 450 into a first outer cavity 452 and a second outer cavity 452 that are movably connected. The cavity 453 has a movable part 420 on the moving plate 42. The movable part 420 is movably engaged with the guide part 451, forming a first inner cavity 421 and a second inner cavity 422 between the movable part 420 and the guide part 451. The first outer cavity 452 and the first inner cavity 421 are movably connected, and the second outer cavity 453 and the second inner cavity 422 are movably connected. The movable part 420 has a first blocking part 420a and a second blocking part 420b that are movably abutted against the inlet 43 and the outlet 44, respectively.

[0041] Furthermore, such as Figures 2 to 7 As shown, the moving disk 42 is disc-shaped, the stationary disk 45 has a ring-shaped structure, the guide portion 451 protrudes from the inner sidewall of the stationary disk 45, and the moving portion 420 has a recessed structure. Alternatively, the guide portion 451 can also be recessed, while the moving portion 420 can be correspondingly convex. During operation, the moving disk 42 swings within the cavity 450, driving the moving portion 420 to move along the outer contour line of the guide portion 451. Specifically, taking... Figure 5 The state shown is the initial state. Figure 6 (Other relative positions can also be the initial state). In this state, the lower part of the moving plate 42 (shown in the diagram) abuts against the inner wall of the stationary plate 45, isolating the first outer cavity 452 and the second outer cavity 453. The moving part 420 abuts against the middle position of the guide part 451 (shown in the diagram). The first inner cavity 421 returns to zero, and the second inner cavity 422 is in the maximum opening position. At this time, the moving plate 42 can switch positions with the rotation of the crankshaft 11. That is, the left end of the moving part 420 moves along the outer contour of the left side of the guide part 451, and then the right end of the moving part 420 moves along the outer contour of the right side of the guide part 451, and finally returns to the starting position. Figure 5 This state is repeated cyclically.

[0042] During operation, driven by crankshaft 11, moving disc 42 moves towards... Figure 5 Swinging at the upper left position (for reference) Figure 6 (As shown in the diagram), the first blocking part 420a at the right end of the moving part 420 moves upward along the outer contour of the guide part 451 from bottom to top. During this process, the first outer cavity 452 and the first inner cavity 421 gradually increase in size, while the second outer cavity 453 and the second inner cavity 422 gradually decrease in size, so as to squeeze the compressed gas towards the exhaust port 44. The gradual increase in size of the first outer cavity 452 and the first inner cavity 421 reduces the pressure inside them, enabling them to absorb gas from the intake port 43. The gradual decrease in size of the second outer cavity 453 and the second inner cavity 422 enables them to compress gas and discharge it from the exhaust port 44. When the moving disc 42 swings to... Figure 5 In the state shown, such as Figure 5 The second outer cavity 453 in the upper left corner completes the intake of gas. Since the guide part 451 and the moving part 420 in this embodiment are symmetrically arranged in the stationary plate 45 and the moving plate 42, the gas can be continuously compressed and guided by the cyclic reciprocating motion of the moving part 420 in the inner cavity relative to the guide part 451. Figure 5 The exhaust port 44 is located at the lower right to achieve the entire compression action. It should be noted that the movement principle between the moving disc 42 and the stationary disc 45 in the first compression unit 2 and the second compression unit 3 is the same. (Refer to...)Figure 6 and Figure 7 After the gas enters the chamber containing the elastic element 5 through the air inlet 10, it can be drawn from the moving plate 42 and the stationary plate 45 by the cooperation of the moving plate 42 and the stationary plate 45. Figure 7 Inhalation is drawn into the suction port 43 (there are two of them) shown. Figure 6 The second outer cavity 453 shown, under the same running trajectory of the moving disc 42 (not described in detail here), is finally discharged from the exhaust ports 44 on both sides of the stationary disc 45. It can be seen that the moving / stationary discs 45 in the first compression unit 2 complete the gas compression function through one air inlet 10 and one exhaust port 44, while the moving / stationary discs 45 in the second compression unit 3 realize the vacuum function through one air inlet 10, two suction ports 43 and two exhaust ports 44. These two functions are achieved by the same crankshaft 11 and two sealing rings that seal the surface. In the case of compact overall structure and reduced equipment size, it also makes the operation more stable and reliable, and there is no overturning moment during operation. It should be added that, for further understanding, the working mode and principle between the stationary disk 45 and the moving disk 42 can be referred to the published Chinese patent: CN221591227U. This document describes the activity mode of the moving part 420 and the guide part 451 on one side of the moving disk 42 and the stationary disk 45. The working principle and movement trajectory of the double sides in this embodiment and the three-sided guide part 451 and moving part 420 that are distributed in a ring at equal intervals along the circumference of the moving / stationary disk 45 (not shown in the figure) are the same, and will not be described in detail here.

[0043] Preferably, in this solution, the guide part 451 and the stationary plate 45 are integrally formed. Of course, the guide part 451 can also be fixed to the stationary plate 45 by welding, gluing or threaded connection. The separate stationary plate 45 is provided with an annular sealing ring 15 between it and the housing 1. That is to say, whether it is integrally formed or separate, good sealing performance can be guaranteed. In particular, in the case of separate setting, the use of an annular sealing ring 15 effectively prevents gas leakage and improves the working efficiency and safety of the equipment.

[0044] More preferably, in this embodiment, the elastic element 5 is a metal bellows (e.g., stainless steel, copper, etc.). The metal bellows can seal the vacuum cavity on the one hand, and limit the movement of the moving plate on the other hand (not moving synchronously with the moving plate). Using the bellows as the elastic element 5 can provide a stable pulling or pushing force to the moving plate 42. Together with the second sealing ring 41, it can effectively prevent the gas entering the housing 1 from the suction port 43 from flowing into the compression cavity 450 through the gap between the two moving plates 42, thereby providing a sealing and shielding effect for the entire device.

[0045] Further preferably, the two moving disks 42 on the first compression unit 2 and the second compression unit 3 are integrally arranged or separately arranged. The two moving disks 42 on the adjacent two compression units are integrally arranged to reduce the number of moving disks 42 and reduce the installation difficulty of the multi-stage displacement pump. The two moving disks 42 arranged separately can realize synchronous movement through screws, bolts or other connecting components, which provides great convenience for subsequent maintenance and replacement and guarantees the stability of the equipment during operation.

[0046] Further preferably, the embodiment also has a counterweight 14 arranged at each end of the crankshaft 11, as shown in the figure. The counterweight 14 can rotate synchronously with the crankshaft 11 in the housing 1. It is worth noting that the two counterweights 14 are arranged eccentrically relative to the crankshaft 11, i.e., the center positions of the two counterweights 14 are not on the same straight line as the axis of the crankshaft 11. Therefore, in the process of mechanical movement, the rotational inertia force of the crankshaft 11 is effectively balanced by using the counterweights 14 at both ends of the crankshaft 11, which not only guarantees the stable operation of the moving disk 42 relative to the static disk 45, but also reduces unnecessary vibration and friction, thereby reducing noise and ensuring the best performance of the machine under various working conditions. Figure 2

[0047] The moving disk 42 is formed with an extension 423 along the axis direction of the crankshaft 11, and the extension 423 and the housing 1 are both arranged with a bearing 16 relative to the crankshaft 11. As shown in the figures, Figure 2 and Figure 4 The bearing 16 ensures the smooth operation of the entire equipment, enhances the rigidity distribution of the structure, reduces vibration and friction, optimizes the rotation cooperation between the parts, effectively prevents the displacement or loosening of the crankshaft 11 during operation, and greatly reduces the damage risk of the bearing 16. It is to be noted that all the bearings 16 in the embodiment can be deep groove ball bearings 16, four-point contact bearings 16, and other bearings 16 such as cylindrical roller bearings 16 or needle bearings 16 can be used instead under larger load conditions.

[0048] Further, the embodiment also has a wear-resistant coating arranged on the surface of the moving disk 42, which increases the service life of the moving disk 42.

[0049] Further, the moving disk 42 and the static disk 45 are both made of metal or high polymer material. Preferably, the high polymer material can be polyphenylene sulfide (PPS), polyether ether ketone (PEEK), polyimide (PI) or the like.

[0050] ​It should be noted that in this invention, the use of terms such as "first," "second," and "a" is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified. The terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two elements or the interaction between two elements, unless otherwise explicitly specified. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

[0052] The specific embodiments described herein are merely illustrative of the spirit of the invention. Those skilled in the art to which this invention pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of the invention or exceeding the scope defined by the appended claims.

Claims

1. A vacuum compression all-in-one machine structure assembly, characterized in that, The utility model provides a kind of air compressor, comprising: Shell with several air inlets, crankshaft is movably arranged in the shell; First compression unit and second compression unit are movably arranged in the shell along the axis direction of the crankshaft, first sealing ring is arranged between the first compression unit and the shell to form compression chamber in the shell, second sealing ring is arranged between the first compression unit and the second compression unit to isolate the vacuum chamber formed in the shell from the compression chamber; Resilient member is arranged in the shell;Wherein, The first compression unit and the second compression unit both have suction compression state and exhaust state, and the working state between them is different, each compression unit is provided with dynamic disc, suction inlet and exhaust port, the dynamic disc is sleeved on the outer wall of the crankshaft and swings in the shell along the radial direction parallel to the crankshaft under the driving of the crankshaft, for compressing working gas entering each compression unit from the suction inlet;The compression chamber and the vacuum chamber both have the suction inlet and the air inlet communicated with each other, and the gas in the compression chamber and the vacuum chamber is prevented from communicating with each other by the second sealing ring; One end of the resilient member along the direction of elastic deformation abuts against the second compression unit, to prevent the dynamic disc from producing autorotation along its axis direction.

2. The vacuum compression all-in-one machine structure assembly according to claim 1, characterized in that, The first compression unit and the second compression unit both further comprise: Static disc is arranged on the shell, the static disc is internally provided with a cavity, the side wall of the cavity is provided with a guide portion, the guide portion is integrally formed with the static disc or separately arranged, the suction inlet and the exhaust port both extend to the guide portion and communicate with the cavity; The dynamic disc is swingingly arranged in the cavity and divides the cavity into first outer cavity and second outer cavity in active communication, the dynamic disc is provided with a moving portion, the moving portion is in active connection with the guide portion and forms first inner cavity and second inner cavity between the moving portion and the guide portion, the first outer cavity and the first inner cavity are in active communication, and the second outer cavity and the second inner cavity are in active communication.

3. The vacuum compression all-in-one machine structure assembly according to claim 1, characterized in that, The resilient member is a metal bellows.

4. The vacuum compression all-in-one machine structure assembly according to claim 2, characterized in that, The moving portion has first blocking portion and second blocking portion respectively in active abutment with the suction inlet and the exhaust port.

5. The vacuum compression all-in-one machine structure assembly according to claim 1, characterized in that, Counterweight is mounted at both ends of the crankshaft, and the counterweight can rotate synchronously with the crankshaft in the shell.

6. The vacuum compression all-in-one machine structure assembly according to claim 2, characterized in that, The static disc is integrally formed with the shell or separately arranged, wherein the static disc and the shell are provided with annular sealing ring when separately arranged.

7. The vacuum compression all-in-one machine structure assembly according to claim 1 or 2, characterized in that, The two dynamic discs on the first compression unit and the second compression unit are integrally arranged or separately arranged.

8. The vacuum compression all-in-one machine structure assembly according to claim 7, characterized in that, The dynamic disc is formed with extension along the axis direction of the crankshaft, and the extension and the shell are both provided with bearing between the crankshaft.

9. The vacuum compression all-in-one machine structure assembly according to claim 1, characterized in that, The surface of the dynamic disc is provided with wear-resistant coating.

10. The vacuum compression all-in-one machine structure assembly according to claim 2, characterized in that, The dynamic disc and the static disc are both metal material or high polymer material.

Images