CN211537131U - Recovery purification device and system thereof - Google Patents

Abstract

The utility model provides a retrieve purifier and system thereof, relates to environmental purification and handles technical field, including retrieving the subassembly and purifying the subassembly, retrieve the inlet end of subassembly and the exhaust end intercommunication of rotary-vane vacuum pump, retrieve the exhaust end of subassembly and purify the inlet end intercommunication of subassembly, retrieve the subassembly and be used for carrying out the condensation to retrieving via rotary-vane vacuum pump exhaust oil gas, purify the subassembly and be used for adsorbing the purification via retrieving the exhaust tail gas that does not congeal of subassembly exhaust. The recovery and purification device can not only realize the recovery of oil gas, thereby effectively reducing the loss of lubricating oil, but also realize the purification of the oil gas, thereby effectively reducing the pollution to the atmospheric environment.

Description

Recovery purification device and system thereof

Technical Field

The utility model relates to an environmental purification handles technical field, particularly, relates to a retrieve purifier and system thereof.

Background

The vacuum pump refers to a device or equipment for obtaining vacuum by pumping a pumped container by using a mechanical, physical, chemical or physicochemical method. The oil rotary vane vacuum pump compresses gas by changing the volume of the gas through the high-speed rotation of a rotary vane, and exhausts the gas from a compression end to an exhaust end to realize the purpose of vacuum pumping. The oil rotary vane vacuum pump seals and lubricates various mechanical parts which move relatively in a pump cavity by means of vacuum pump oil.

In the prior art, partial lubrication oil can be atomized to generate oil gas in the operation process of the rotary-vane vacuum pump, and the generated oil gas can be mixed in the air to form tail gas which is directly discharged to the air. The process not only can cause the waste of the lubricating oil, but also can cause the pollution to the atmospheric environment because the oil gas generated by the atomization of the lubricating oil is mixed in the air to directly discharge the air.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a retrieve purifier and system thereof not only can realize the recovery of oil gas to reduce the loss of lubricating oil effectively, can also realize the purification of oil gas, thereby reduce the pollution to the atmospheric environment effectively.

The embodiment of the utility model is realized like this:

an aspect of the embodiment of the utility model provides a retrieve purifier, including retrieving the subassembly and purifying the subassembly, retrieve the inlet end of subassembly and the exhaust end intercommunication of rotary-vane vacuum pump, retrieve the exhaust end of subassembly with purify the inlet end intercommunication of subassembly, it is used for right via rotary-vane vacuum pump exhaust oil gas carries out the condensation and retrieves, purify the subassembly be used for right via retrieve the exhaust tail gas of not condensing of subassembly and adsorb the purification. The recovery and purification device can not only realize the recovery of oil gas, thereby effectively reducing the loss of lubricating oil, but also realize the purification of the oil gas, thereby effectively reducing the pollution to the atmospheric environment.

Optionally, in the preferred embodiment of the present invention, the recycling assembly includes a cooling chamber and an oil-gas chamber disposed in the cooling chamber, the inner wall surface of the cooling chamber and a first gap for accommodating a cooling medium is disposed between the outer wall surfaces of the oil-gas chamber, the oil-gas chamber is provided with a first accommodating cavity for accommodating oil gas, the air inlet of the oil-gas chamber is communicated with the air outlet of the rotary vane vacuum pump, and the air outlet of the oil-gas chamber is communicated with the air inlet of the purifying assembly.

Optionally, in the preferred embodiment of the present invention, the outer wall surface of the cooling chamber is provided with an inlet port and an outlet port, respectively, the inlet port and the outlet port are used for the introduction and discharge of the cooling medium, the outer wall surface of the oil and gas chamber is further provided with an oil discharge port, the oil discharge port is used for the oil and gas introduction into the oil and gas chamber, and the oil and gas chamber is discharged after the cooling medium is condensed.

Optionally, in a preferred embodiment of the present invention, the cooling medium comprises water, brine, freon or glycol.

Optionally, in the preferred embodiment of the present invention, the purification assembly includes an adsorption chamber, the adsorption chamber is provided with a second holding cavity for holding the noncondensable tail gas, and the inlet end of the adsorption chamber is communicated with the exhaust end of the oil gas chamber.

Optionally, in the preferred embodiment of the present invention, the adsorption chamber is internally provided with an air inlet facing the adsorption chamber, the direction of the air outlet of the adsorption chamber is sequentially provided with a supporting member and a pressing member, the supporting member is provided with a second gap for holding an adsorption medium between the pressing members, the purification assembly further comprises a sealing head, the sealing head is arranged at the position where the adsorption chamber is far away from one end of the oil-gas chamber, and the air outlet of the adsorption chamber is arranged at the position where the sealing head is far away from one end of the oil-gas chamber.

Optionally, in a preferred embodiment of the present invention, the adsorption medium includes at least one of activated carbon, adsorption resin, and sawdust.

Optionally, in the preferred embodiment of the present invention, the adsorption chamber includes two, the recovery and purification device further includes a switching chamber and a switching valve disposed in the switching chamber, the switching chamber is of a Y-shaped structure, the main passage of the Y-shaped structure is communicated with the exhaust end of the oil and gas chamber, the two passages of the Y-shaped structure are respectively communicated with the air inlet of the adsorption chamber, and the switching valve is disposed in the switching chamber to move, so that the oil and gas chamber is communicated with the adsorption chamber or another adsorption chamber.

Optionally, in a preferred embodiment of the present invention, the switching valve includes a valve flap, a valve rod and a hand wheel connected in sequence, the valve flap is accommodated in the switching chamber, the hand wheel is accommodated outside the switching chamber, and the valve rod passes through the switching chamber and is in threaded connection with the side wall of the switching chamber.

The embodiment of the utility model provides a another aspect provides a retrieve clean system, including foretell recovery purification device. The recovery and purification device can not only realize the recovery of oil gas, thereby effectively reducing the loss of lubricating oil, but also realize the purification of the oil gas, thereby effectively reducing the pollution to the atmospheric environment.

The utility model discloses beneficial effect includes:

this retrieve purifier is including retrieving the subassembly and purifying the subassembly, the inlet end through retrieving the subassembly communicates with the exhaust end of rotary-vane vacuum pump, retrieve the exhaust end of subassembly and purifying the inlet end intercommunication of subassembly, rotary-vane vacuum pump promptly, retrieve the subassembly and purify the intercommunication in proper order of subassembly, so that can be retrieved by retrieving the subassembly condensation via rotary-vane vacuum pump exhaust oil gas, can be adsorbed the purification by purifying the subassembly via retrieving the exhaust noncondensable tail gas of subassembly exhaust, thereby make this retrieve purifier not only can realize the recovery of oil gas, reduce the loss of lubricating oil effectively, can also realize the purification of oil gas, reduce the pollution to atmospheric environment effectively.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention, and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.

Fig. 1 is one of schematic structural diagrams of a recovery and purification device provided in an embodiment of the present invention;

fig. 2 is a second schematic structural diagram of a recycling and purifying device according to an embodiment of the present invention.

Icon: 100-a recovery purification device; 10-a recovery assembly; 11-a cooling chamber; 111-an inlet port; 112-a discharge port; 12-a gas and oil chamber; 121-a first receiving chamber; 122-oil drain port; 13-a first gap; 20-a purification component; 21-an adsorption chamber; 211-a second containing cavity; 212-a support; 213-a compression member; 22-end enclosure; 31-a switching chamber; 311-main path; 312-branch; 32-a switching valve; 321-a valve flap; 322-a valve stem; 323-hand wheel; 200-rotary vane vacuum pump.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention, as generally described and illustrated in the figures herein, may be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present invention, presented in the accompanying drawings, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the position or positional relationship based on the position or positional relationship shown in the drawings, or the position or positional relationship which is usually placed when the product of the present invention is used, and are only for convenience of description and simplification of the description, but do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used solely to distinguish one from another and are not to be construed as indicating or implying relative importance.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; either directly or indirectly through intervening media, or may be internal to both elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Examples

Referring to fig. 1 and fig. 2, the present embodiment provides a recycling and purifying apparatus 100, which includes a recycling component 10 and a purifying component 20, wherein an air inlet of the recycling component 10 is communicated with an air outlet of a rotary vane vacuum pump 200, an air outlet of the recycling component 10 is communicated with an air inlet of the purifying component 20, the recycling component 10 is used for condensing and recycling oil gas exhausted by the rotary vane vacuum pump 200, and the purifying component 20 is used for adsorbing and purifying noncondensable tail gas exhausted by the recycling component 10.

It should be noted that, firstly, in the prior art, because the rotary-vane vacuum pump 200 may cause partial lubrication oil to be atomized to generate oil gas during the operation process, and the generated oil gas may be mixed in the air to form tail gas to be discharged directly into the air, in order to avoid the loss of the lubrication oil, the recovery and purification apparatus 100 adds the recovery component 10 communicated with the rotary-vane vacuum pump 200 at the exhaust end of the rotary-vane vacuum pump 200, that is, the air inlet end of the recovery component 10 is communicated with the exhaust end of the rotary-vane vacuum pump 200, so as to condense and recover the oil gas exhausted from the exhaust end of the rotary-vane vacuum pump 200, thereby achieving the recovery of the oil gas.

Secondly, since not all the oil gas introduced into the recovery module 10 can be condensed and recovered, there will generally be some tail gas which can not be condensed and recovered, therefore, further, in order to reduce the pollution to the atmospheric environment, the recovery and purification device 100 further adds the purification module 20 communicated with the exhaust end of the recovery module 10, that is, the air inlet end of the purification module 20 is communicated with the exhaust end of the recovery module 10, so as to adsorb and purify the non-condensable tail gas discharged through the exhaust end of the recovery module 10, thereby realizing the purification of the oil gas.

Third, since the gas is light in weight, the gas is generally likely to flow from the bottom to the top, and therefore, in the present embodiment, the recovery module 10 is located above the rotary vane pump 200, and the purge module 20 is located above the recovery module 10.

As described above, the recovery and purification device 100 includes the recovery component 10 and the purification component 20, the air inlet end of the recovery component 10 is communicated with the air outlet end of the sliding vane rotary vacuum pump 200, the air outlet end of the recovery component 10 is communicated with the air inlet end of the purification component 20, that is, the sliding vane rotary vacuum pump 200, the recovery component 10 and the purification component 20 are sequentially communicated, so that the oil gas discharged by the sliding vane rotary vacuum pump 200 can be condensed and recovered by the recovery component 10, and the noncondensable tail gas discharged by the recovery component 10 can be adsorbed and purified by the purification component 20, so that the recovery and purification device 100 can not only realize the recovery of the oil gas, effectively reduce the loss of the lubricating oil, but also realize the purification of the oil gas, and effectively reduce the pollution to the atmospheric environment.

Specifically, as shown in fig. 1 and fig. 2, in this embodiment, the recovery assembly 10 includes a cooling chamber 11 and an oil gas chamber 12 disposed in the cooling chamber 11, a first gap 13 for accommodating a cooling medium is disposed between an inner wall surface of the cooling chamber 11 and an outer wall surface of the oil gas chamber 12, a first accommodating cavity 121 for accommodating oil gas is disposed in the oil gas chamber 12, an air inlet end of the oil gas chamber 12 is communicated with an air outlet end of the rotary vane vacuum pump 200, and an air outlet end of the oil gas chamber 12 is communicated with an air inlet end of the purification assembly 20.

It should be noted that, the oil gas chamber 12 is disposed in the cooling chamber 11, and a first gap 13 for accommodating a cooling medium is disposed between an inner wall surface of the cooling chamber 11 and an outer wall surface of the oil gas chamber 12, so that oil gas introduced into the oil gas chamber 12 can be uniformly condensed by a low temperature action of the cooling medium, distances between the inner wall surfaces of the cooling chambers 11 and the outer wall surfaces of the oil gas chambers 12 (i.e., width dimensions of the first gap 13) corresponding to the inner wall surfaces of the cooling chambers 11 should be equal.

Of course, in other embodiments, considering that the temperature of the oil gas at this stage may be relatively high before the oil gas enters the oil gas chamber 12 through the exhaust end of the rotary vane vacuum pump 200 and the intake end of the oil gas chamber 12, that is, the oil gas is not subjected to the low temperature effect of the cooling medium, the width of the first gap 13 may also be appropriately increased at a position where the temperature of the oil gas is relatively high, that is, at a position where the temperature of the oil gas is relatively high, the distance between the inner wall surface of the cooling chamber 11 and the outer wall surface of the oil gas chamber 12 in one-to-one correspondence therewith may be appropriately increased, so that the temperature of the oil gas can be rapidly reduced.

As shown in fig. 1 and fig. 2, in this embodiment, the outer wall surface of the cooling chamber 11 is provided with an inlet 111 and an outlet 112, the inlet 111 and the outlet 112 are used for introducing and discharging a cooling medium, respectively, the outer wall surface of the oil-gas chamber 12 is further provided with an oil discharge port 122, and the oil discharge port 122 is used for discharging oil gas after the oil gas is introduced into the oil-gas chamber 12 and condensed by the cooling medium.

First, as shown in fig. 1 and 2, the cross-sectional shapes of the cooling chamber 11 and the oil-gas chamber 12 are both right-angled trapezoid structures, wherein the upper base and the lower base of the right-angled trapezoid structures are vertically arranged, the right-angled sides of the right-angled trapezoid structures are horizontally arranged, and the right-angled sides of the right-angled trapezoid structures are located above the oblique sides of the right-angled trapezoid structures. Of course, in other embodiments, the cross-sectional shapes of the cooling chamber 11 and the oil and gas chamber 12 may also be rectangular, circular, oval, diamond, etc. The person skilled in the art should be able to design the device according to practical situations, and should not be limited to this.

Second, as shown in fig. 1 and fig. 2, compare in other cross-sectional shapes, the cross-sectional shape is cooling chamber 11 and oil gas chamber 12 of right trapezoid structure, can set up inlet port 111 and discharge port 112 respectively in the lower base and the last base of right trapezoid structure, oil drain 122 sets up in the lower acute angle department of the vertical height of right trapezoid structure, so that first clearance 13 is filled up after cooling medium lets in via inlet port 111, thereby can carry out abundant low temperature effect to oil gas in oil gas chamber 12 and the oil gas chamber 12, can also make the interior fluid that takes place the oil gas formation of condensation of oil gas chamber 12 directly drop or drop to oil drain 122 via the guide effect on bevel limit, thereby can be convenient for collect fluid, improve the rate of recovery of oil gas effectively. Oil obtained by condensing and recycling oil gas can be used as low-grade lubricating oil or used as waste engine oil for recycling.

Optionally, the cooling medium comprises water, saline, freon, or ethylene glycol. Illustratively, the cooling medium may be underground pipe network industrial water, industrial chilled brine, industrial chilled freon, or industrial chilled glycol.

Specifically, in this embodiment, the purification assembly 20 includes an adsorption chamber 21, a second accommodating cavity 211 for accommodating the noncondensable tail gas is provided in the adsorption chamber 21, and an air inlet end of the adsorption chamber 21 is communicated with an air outlet end of the oil gas chamber 12.

As shown in fig. 1 and fig. 2, in this embodiment, a support member 212 and a pressing member 213 are sequentially disposed in the adsorption chamber 21 along a direction from the air inlet end of the adsorption chamber 21 to the air outlet end of the adsorption chamber 21, a second gap for accommodating the adsorption medium is disposed between the support member 212 and the pressing member 213, so as to provide a support function for the adsorption medium through the support member 212, and provide a pressing function for the adsorption medium through the pressing member 213, so that the adsorption medium is accommodated in the second gap formed between the support member 212 and the pressing member 213. Purification assembly 20 still includes head 22, and head 22 sets up in the one end that the oil gas room 12 was kept away from to adsorption chamber 21, and the exhaust end of adsorption chamber 21 sets up in the one end that the oil gas room 12 was kept away from to head 22 to the tip of messenger adsorption chamber 21 seals and keeps apart with external environment, thereby avoids external environment to adsorption media's influence. Illustratively, the adsorption chamber 21 has a hollow cylindrical structure, but of course, in other embodiments, the adsorption chamber 21 may have a hollow rectangular structure, etc. The person skilled in the art should be able to design the device according to practical situations, and should not be limited to this.

Optionally, the adsorption medium comprises at least one of activated carbon, adsorbent resin, sawdust. Illustratively, the adsorbent media is a single activated carbon, a single adsorbent resin, a single sawdust, or a mixture of components of activated carbon and adsorbent resin, a mixture of components of activated carbon and sawdust, a mixture of components of adsorbent resin and sawdust, or a mixture of activated carbon, adsorbent resin and sawdust.

When the number of the adsorption chambers 21 is one, the noncondensable tail gas discharged from the oil gas chamber 12 directly passes through the adsorption chambers 21 to be adsorbed and purified. When the adsorption medium in the adsorption chamber 21 no longer has the adsorption effect, the introduction of the oil gas into the recovery and purification device 100 needs to be stopped, and the adsorption medium in the adsorption chamber 21 needs to be replaced, which affects the working efficiency of the recovery and purification device 100.

Therefore, as shown in fig. 1 and 2, in the present embodiment, preferably, the adsorption chambers 21 include two adsorption chambers 21, the recovery and purification device 100 further includes a switching chamber 31 and a switching valve 32 disposed in the switching chamber 31, the switching chamber 31 is in a Y-shaped structure, a main passage 311 of the Y-shaped structure communicates with the exhaust end of the oil-gas chamber 12, two branches 312 of the Y-shaped structure communicate with the intake ends of the two adsorption chambers 21, respectively, and the switching valve 32 moves in the switching chamber 31 to communicate the oil-gas chamber 12 with one adsorption chamber 21 or the other adsorption chamber 21.

For convenience of description, the two adsorption chambers 21 shown in the drawings are divided into a first adsorption chamber and a second adsorption chamber, and the switching valve 32 moves in the switching chamber 31, so that the oil gas chamber 12 can be communicated with the first adsorption chamber but not communicated with the second adsorption chamber, or not communicated with the first adsorption chamber but communicated with the second adsorption chamber, and thus the flow direction of the noncondensable tail gas can be changed by moving the switching valve 32 in the switching chamber 31, and the switching of the operating states of the first adsorption chamber and the second adsorption chamber is realized.

When the oil gas chamber 12 is communicated with the first adsorption chamber and not communicated with the second adsorption chamber, the non-condensable tail gas discharged from the oil gas chamber 12 is introduced into the first adsorption chamber for adsorption and purification, and the second adsorption chamber does not work at the moment, so that the adsorption medium in the second adsorption chamber can be replaced/activated, or the second adsorption chamber can be maintained; when oil gas chamber 12 and second adsorption chamber intercommunication and with first adsorption chamber not communicate, through the noncondensable tail gas of oil gas chamber 12 exhaust will let in the second adsorption chamber and adsorb and purify, first adsorption chamber is out of work this moment, can change/activation treatment to the adsorption medium in the first adsorption chamber, perhaps carries out operations such as maintenance to first adsorption chamber.

In this embodiment, the switching valve 32 includes a valve flap 321, a valve rod 322, and a hand wheel 323 connected in sequence, the valve flap 321 is accommodated in the switching chamber 31, the hand wheel 323 is accommodated outside the switching chamber 31, the valve rod 322 passes through the switching chamber 31 and is in threaded connection with a sidewall of the switching chamber 31, so that an operator can screw the hand wheel 323 clockwise or counterclockwise to drive the valve flap 321 to move back and forth in the switching chamber 31, thereby changing the flow direction of the noncondensable tail gas.

The application also provides a recovery purification system. The recycling purification system provided by the embodiment comprises the recycling purification device 100. Since the structure and advantageous effects of the recycling purification apparatus 100 have been described in detail in the foregoing embodiments, they will not be described in detail.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. The utility model provides a retrieve purifier, its characterized in that, is including retrieving the subassembly and purifying the subassembly, retrieve the inlet end of subassembly and rotary-vane vacuum pump's exhaust end intercommunication, retrieve the exhaust end of subassembly with purify the inlet end intercommunication of subassembly, it is used for right via rotary-vane vacuum pump exhaust oil gas carries out the condensation and retrieves, it is used for right via to purify the subassembly retrieve the exhaust tail gas of not condensing of subassembly and adsorb the purification.

2. The recovery and purification device according to claim 1, wherein the recovery assembly comprises a cooling chamber and an oil-gas chamber arranged in the cooling chamber, a first gap for accommodating a cooling medium is arranged between the inner wall surface of the cooling chamber and the outer wall surface of the oil-gas chamber, a first accommodating cavity for accommodating oil-gas is arranged in the oil-gas chamber, the gas inlet end of the oil-gas chamber is communicated with the gas outlet end of the rotary vane vacuum pump, and the gas outlet end of the oil-gas chamber is communicated with the gas inlet end of the purification assembly.

3. The recovery and purification device as claimed in claim 2, wherein the outer wall surface of the cooling chamber is provided with an inlet port and an outlet port, the inlet port and the outlet port are used for the introduction and discharge of the cooling medium, respectively, the outer wall surface of the oil and gas chamber is further provided with an oil discharge port, and the oil discharge port is used for the introduction of the oil and gas into the oil and gas chamber and the discharge of the oil and gas chamber after the condensation of the cooling medium.

4. The recovery purification apparatus of claim 2, wherein the cooling medium comprises water, brine, freon, or ethylene glycol.

5. The recovery and purification device according to claim 2, wherein the purification assembly comprises an adsorption chamber, a second accommodating cavity for accommodating the noncondensable tail gas is arranged in the adsorption chamber, and an air inlet end of the adsorption chamber is communicated with an air outlet end of the oil gas chamber.

6. The recovery and purification device according to claim 5, wherein a support member and a pressing member are sequentially arranged in the adsorption chamber along a direction from the air inlet end of the adsorption chamber to the air outlet end of the adsorption chamber, a second gap for accommodating an adsorption medium is arranged between the support member and the pressing member, the purification assembly further comprises a seal head, the seal head is arranged at one end of the adsorption chamber far away from the oil gas chamber, and the air outlet end of the adsorption chamber is arranged at one end of the seal head far away from the oil gas chamber.

7. The recycling and purifying apparatus of claim 6, wherein said adsorbent media comprises at least one of activated carbon, adsorbent resin, sawdust.

8. The recovery purification device according to claim 5, wherein the number of the adsorption chambers is two, the recovery purification device further comprises a switching chamber and a switching valve arranged in the switching chamber, the switching chamber is of a Y-shaped structure, the main passage of the Y-shaped structure is communicated with the exhaust end of the oil-gas chamber, the two passages of the Y-shaped structure are respectively communicated with the gas inlet ends of the two adsorption chambers, and the switching valve moves in the switching chamber to communicate the oil-gas chamber with one adsorption chamber or the other adsorption chamber.

9. The recycling and purifying device of claim 8, wherein the switching valve comprises a valve flap, a valve rod and a hand wheel which are connected in sequence, the valve flap is accommodated in the switching chamber, the hand wheel is accommodated outside the switching chamber, and the valve rod passes through the switching chamber and is in threaded connection with the side wall of the switching chamber.

10. A recycling purification system comprising the recycling purification apparatus according to any one of claims 1 to 9.

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