Suction filtration anti-suck-back device of vacuum pump

Abstract

The utility model relates to the technical field of vacuum pump units, and discloses a suction filtration anti-suck-back device of a vacuum pump, which comprises a first container, a second container, a third container and a fourth container, the air inlet pipeline extends into the first container from the first inlet; an adsorption layer is arranged in the second container; two ends of the middle pipeline are respectively communicated with the first outlet and the second container; one end of the air outlet pipeline communicates with the second container, and the other end communicates with an air suction port of the vacuum pump; the air inlet pipeline extends in the first container to form a buffer pipe section, and a pipe opening of the buffer pipe section is lower than the first outlet; according to the suction filtration anti-suck-back device of the vacuum pump provided by the utility model, the first container and the second container are arranged for dual trapping, so that waste liquid and volatile gas entering the vacuum pump are effectively reduced; the extended arrangement of the buffer pipe section prevents waste liquid and volatile gas from directly entering the second container through the first outlet, prolongs the residence time of the volatile gas in the first container, increases the condensation efficiency, improves the trapping efficiency, and effectively protects the vacuum pump from being polluted.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum pump units, in particular to a vacuum pump filtration and back-suction prevention device. Background Art

[0002] In the pharmaceutical industry, water jet vacuum pumps are widely used in the filtration process. However, during the filtration process, a small amount of waste liquid and volatile gas are often drawn into the air chamber and water tank of the vacuum pump, resulting in reduced vacuum, increased water temperature in the water tank, and deterioration of water quality.

[0003] In the related art, in order to prevent the backflow of waste liquid and volatile gas, the water supply port and sewage outlet of the vacuum pump are often kept open, or the water in the water tank is replaced regularly. However, the above-mentioned anti-backflow methods all have the problem of serious waste of water resources and cannot completely avoid the accumulation of waste liquid. In addition, the existing treatment methods are difficult to effectively prevent waste liquid and volatile gas from entering the pipeline, affecting the service life of the vacuum pump. Utility Model Content

[0004] In view of this, the utility model provides a vacuum pump filtration anti-backflow device to solve the problem that waste liquid and volatile gas will be drawn into the air chamber and water tank of the vacuum pump during the vacuum pump filtration process. The existing treatment method will cause waste of water resources and it is difficult to effectively prevent waste liquid and volatile gas from entering.

[0005] The utility model provides a vacuum pump filtration and backflow prevention device, comprising: a first container, wherein a first inlet and a first outlet are provided at the first container; an air inlet pipeline, one end of which is connected to the equipment, and the other end extends from the first inlet into the first container; a second container, an adsorption layer is provided inside; an intermediate pipeline, both ends of which are respectively connected to the first outlet and the second container; an air outlet pipeline, one end of which is connected to the second container, and the other end is suitable for being connected to the air intake of the vacuum pump; wherein, the first container is suitable for condensing part of the volatile gas extracted from the equipment and collecting the extracted waste liquid, and the adsorption layer is suitable for adsorbing the remaining volatile gas; the air inlet pipeline extends inside the first container to form a buffer pipe section, and the pipe mouth of the buffer pipe section is arranged lower than the first outlet.

[0006] Beneficial effects: On the one hand, the dual capture setting of the first container and the second container can effectively reduce the waste liquid and volatile gas entering the vacuum pump. The first container mainly captures the waste liquid and most of the condensed volatile gas, while the second container further adsorbs the remaining volatile gas, thereby effectively protecting the vacuum pump from pollution; on the other hand, the extended setting of the buffer pipe section not only prevents the waste liquid and volatile gas from directly entering the second container through the first outlet, but also prolongs the residence time of the volatile gas in the first container, increases the condensation efficiency, and enables more volatile gas to be condensed and captured in the first container, thereby improving the overall capture efficiency; under the coordinated action of the dual capture and the buffer pipe section, the anti-backflow device effectively avoids the corrosion and pollution of the internal structure of the vacuum pump by these substances, prolongs the service life of the vacuum pump, and at the same time maintains the water quality and water temperature of the water tank in the vacuum pump stable, which is conducive to maintaining the efficient operation of the vacuum pump.

[0007] In an optional embodiment, the first container includes a first bottle body and a first bottle stopper, and the first bottle stopper is detachably connected to the bottle mouth of the first bottle body.

[0008] Beneficial effects: By providing a detachably connected first bottle stopper, waste liquid treatment and cleaning are facilitated; when the first container captures a certain amount of waste liquid, the user can pull out the bottle stopper, pour out the waste liquid and thoroughly clean the bottle body, which simplifies the waste liquid treatment process and improves work efficiency. After cleaning and re-plugging the first bottle stopper, the first container can be put into use again, reducing production costs.

[0009] In an optional embodiment, the first inlet is opened at the first bottle plug, and the first outlet is opened at the first bottle body; the air intake pipe passes through the first inlet and is interference-fitted with the first inlet.

[0010] In an optional embodiment, the second container includes a second bottle body and a second bottle stopper, and the second bottle stopper is detachably connected to the bottle mouth of the second bottle body; the second bottle body is provided with a second inlet and a second outlet.

[0011] In an optional embodiment, both ends of the intermediate pipeline are respectively connected to the first outlet and the second inlet via a seal; and the air outlet pipeline is connected to the second outlet via a seal.

[0012] In an optional embodiment, the second bottle body is a conical flask, and the adsorption layer is placed on the bottom side of the conical flask.

[0013] In an optional embodiment, the adsorption layer is an activated carbon layer.

[0014] In an optional embodiment, the second inlet and the second outlet are respectively arranged on opposite sides of the second bottle body. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0016] Figure 1 This is a schematic diagram of the vacuum pump filtration and anti-backflow device of the utility model.

[0017] Description of reference numerals:

[0018] 1. First container; 11. First inlet; 12. First outlet; 13. First bottle body; 14. First stopper; 2. Air inlet pipe; 21. Buffer pipe section; 3. Equipment; 4. Second container; 41. Adsorption layer; 42. Second bottle body; 43. Second stopper; 44. Second inlet; 45. Second outlet; 5. Intermediate pipeline; 6. Air outlet pipe; 7. Vacuum pump; 71. Air intake port; 8. Sealing element. DETAILED DESCRIPTION

[0019] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without making creative efforts shall fall within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "installed," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0022] In addition, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0023] The following combination Figure 1 , describing the embodiments of the present utility model.

[0024] According to an embodiment of the present utility model, a vacuum pump filtration and backflow prevention device is provided, comprising: a first container 1, wherein the first container 1 is provided with a first inlet 11 and a first outlet 12; an air inlet pipe 2, one end of which is connected to the equipment 3, and the other end extends from the first inlet 11 into the first container 1; a second container 4, an adsorption layer 41 is provided inside; an intermediate pipe 5, both ends of which are respectively connected to the first outlet 12 and the second container 4; an air outlet pipe 6, one end of which is connected to the second container 4, and the other end is suitable for being connected to the air intake 71 of the vacuum pump 7; wherein, the first container 1 is suitable for condensing part of the volatile gas extracted from the equipment 3 and collecting the extracted waste liquid, and the adsorption layer 41 is suitable for adsorbing the remaining volatile gas; the air inlet pipe 2 is extended inside the first container 1 to form a buffer pipe section 21, and the pipe mouth of the buffer pipe section 21 is set lower than the first outlet 12.

[0025] The specific use process of the vacuum pump filtration and anti-backflow device is as follows: Figure 1As shown, the suction and filtration anti-backflow device is arranged between the use point of the equipment 3 and the suction port 71 of the vacuum pump 7, and is used to prevent waste liquid and volatile gas from entering the vacuum pump 7 when the equipment 3 performs vacuum filtration; wherein, the air intake pipe 2 is arranged to pass through the first inlet 11 of the first container 1, and the air intake pipe 2 and the first inlet 11 are sealed. The specific sealing method can be an interference fit to ensure the airtightness of the anti-backflow device, and the two ends of the intermediate pipe 5 are respectively connected to the first container 1 and the second container 4 by means of a seal 8; specifically, when the vacuum filtration is in progress, under the suction action of the vacuum pump 7, a small amount of waste liquid and volatile gas in the equipment 3 are extracted and introduced into the first container 1 through the air intake pipe 2. Due to the pressure difference, the waste liquid is captured in the first container 1, most of the volatile gas is condensed and captured in the first container 1, and the remaining volatile gas passes through the intermediate pipe 5. The pipeline 5 is introduced into the second container 4, and the adsorption layer 41 in the second container 4 can adsorb part of the remaining volatile gas. Under the dual capture action of the first container 1 and the second container 4, the water quality and water temperature changes in the water tank in the vacuum pump 7 are effectively reduced, and the waste liquid and volatile gas are effectively blocked from entering the vacuum pump 7; further, the air intake pipe is specially extended to provide a buffer pipe section 21 in the first container 1, and the buffer pipe section 21 extends toward the bottom wall of the first container 1, and the end pipe mouth of the buffer pipe section 21 is lower than the first outlet 12. On the one hand, it prevents the waste liquid and volatile gas from being directly sucked into the second container 4 through the first outlet 12, which greatly affects the capture performance. On the other hand, the buffer pipe section 21 on the opposite side can prolong the time that the volatile gas is in the first container 1, thereby prolonging the condensation effect, so that most of the volatile gas can be condensed and captured in the first container 1, thereby improving the capture rate.

[0026] In this embodiment, on the one hand, the dual capture setting of the first container 1 and the second container 4 can effectively reduce the waste liquid and volatile gas entering the vacuum pump 7. The first container 1 mainly captures the waste liquid and most of the condensed volatile gas, while the second container 4 further adsorbs the remaining volatile gas, thereby effectively protecting the vacuum pump 7 from pollution; on the other hand, the extended setting of the buffer pipe section 21 not only prevents the waste liquid and volatile gas from directly entering the second container 4 through the first outlet 12, but also prolongs the residence time of the volatile gas in the first container 1, increases the condensation effect, and enables more volatile gas to be condensed and captured in the first container 1, thereby improving the overall capture efficiency; under the coordinated action of the dual capture and the buffer pipe section 21, the anti-backflow device effectively avoids the corrosion and pollution of the internal structure of the vacuum pump 7 by these substances, prolongs the service life of the vacuum pump 7, and at the same time maintains the water quality and water temperature of the water tank in the vacuum pump 7 stable, which is conducive to maintaining the efficient operation of the vacuum pump 7.

[0027] Optionally, the vacuum pump 7 may be a water jet vacuum pump 7 .

[0028] In some embodiments, combined Figure 1 As shown, the first container 1 includes a first bottle body 13 and a first bottle stopper 14. The first bottle stopper 14 is detachably connected to the bottle mouth of the first bottle body 13. Specifically, the first bottle stopper 14 can be plugged at the bottle mouth to ensure airtightness, and can be pulled out with force as needed; after a certain amount of waste liquid is captured in the first container 1, the waste liquid can be poured out by pulling out the first bottle stopper 14, and the first bottle body 13 can be cleaned. Thereafter, the first bottle stopper 14 can be plugged back into the bottle mouth for capture and use.

[0029] In this embodiment, a detachably connected first bottle stopper 14 is provided to facilitate waste liquid treatment and cleaning. When the first container 1 captures a certain amount of waste liquid, the user can pull out the bottle stopper, pour out the waste liquid and thoroughly clean the bottle body, thereby simplifying the waste liquid treatment process and improving work efficiency. After cleaning and re-plugging the first bottle stopper 14, the first container 1 can be put into use again, thereby reducing production costs.

[0030] In some embodiments, combined Figure 1 As shown, the first inlet 11 is opened at the first bottle stopper 14, and the first outlet 12 is opened at the first bottle body 13. The first outlet 12 can be a connecting nozzle extending outward, and the intermediate pipeline 5 is sealedly connected to the connecting nozzle by means of a seal 8; the air intake pipeline 2 passes through the first inlet 11 and is interference-fitted with the first inlet 11 to ensure the airtightness of the anti-backflow device.

[0031] In some embodiments, combined Figure 1 As shown, the second container 4 includes a second bottle body 42 and a second bottle stopper 43. The second bottle stopper 43 is detachably connected to the bottle mouth of the second bottle body 42. The setting relationship between the second bottle stopper 43 and the second bottle body 42 is similar to that of the first container 1. The second bottle body 42 is provided with a second inlet 44 and a second outlet 45. The second inlet 44 and the second outlet 45 are respectively arranged on opposite sides of the second bottle body 42 to maximize the distance between the air intake inlet and the outlet, thereby increasing the residence time of the volatile gas in the second container 4, and thereby improving the adsorption efficiency of the adsorption layer 41.

[0032] In some embodiments, combined Figure 1 As shown, the two ends of the intermediate pipeline 5 are respectively connected to the first outlet 12 and the second inlet 44 by means of a seal 8; the air outlet pipeline 6 is connected to the second outlet 45 by means of a seal 8, and the seal 8 is sleeved at the connection position between the pipeline and the inlet and outlet. The material of the seal 8 can be rubber.

[0033] In some embodiments, combined Figure 1As shown, the second bottle body 42 is a conical flask, and the adsorption layer 41 is placed on the bottom side of the conical flask to increase the layout volume of the adsorption layer 41 and improve the adsorption effect; the adsorption layer 41 can be an activated carbon layer that can quickly adsorb volatile gases.

[0034] Obviously, the above embodiments are merely examples for the purpose of clarity of explanation and are not intended to limit the implementation methods. Although the embodiments of the present invention have been described in conjunction with the accompanying drawings, those skilled in the art may make various modifications and variations without departing from the spirit and scope of the present invention, and such modifications and variations are all within the scope defined by the present invention.

Claims

1. A vacuum pump filtration and anti-backflow device, characterized in that: include: A first container (1), wherein the first container (1) is provided with a first inlet (11) and a first outlet (12); An air inlet pipe (2), one end of which is connected to the device (3) and the other end of which extends from the first inlet (11) into the first container (1); A second container (4) having an adsorption layer (41) disposed therein; An intermediate pipeline (5), both ends of which are respectively connected to the first outlet (12) and the second container (4); An air outlet pipe (6), one end of which is in communication with the second container (4), and the other end of which is adapted to be in communication with the air intake port (71) of the vacuum pump (7); The first container (1) is suitable for condensing part of the volatile gas extracted from the device (3) and collecting the extracted waste liquid, and the adsorption layer (41) is suitable for adsorbing the remaining volatile gas; The air intake pipeline (2) extends inside the first container (1) to form a buffer pipe section (21), and the pipe opening of the buffer pipe section (21) is arranged lower than the first outlet (12).

2. The vacuum pump filtration and back-suction prevention device according to claim 1, characterized in that: The first container (1) comprises a first bottle body (13) and a first bottle stopper (14), wherein the first bottle stopper (14) is detachably connected to the bottle mouth of the first bottle body (13).

3. The vacuum pump filtration and anti-backflow device according to claim 2, characterized in that: The first inlet (11) is opened at the first bottle stopper (14), and the first outlet (12) is opened at the first bottle body (13); The air intake pipe (2) passes through the first inlet (11) and is interference-fitted with the first inlet (11).

4. The vacuum pump filtration and back-suction prevention device according to claim 3, characterized in that: The second container (4) comprises a second bottle body (42) and a second bottle stopper (43), wherein the second bottle stopper (43) is detachably connected to the bottle mouth of the second bottle body (42); The second bottle body (42) is provided with a second inlet (44) and a second outlet (45).

5. The vacuum pump filtration and anti-backflow device according to claim 4, characterized in that: The two ends of the intermediate pipeline (5) are respectively connected to the first outlet (12) and the second inlet (44) by means of a sealing member (8); The air outlet pipe (6) is connected to the second outlet (45) by means of a sealing member (8).

6. The vacuum pump filtration and back-suction prevention device according to claim 4, characterized in that: The second bottle body (42) is a conical flask, and the adsorption layer (41) is placed on the bottom side of the conical flask.

7. The vacuum pump filtration and anti-backflow device according to claim 6, characterized in that: The adsorption layer (41) is an activated carbon layer.

8. The vacuum pump filtration and back-suction prevention device according to claim 7, characterized in that: The second inlet (44) and the second outlet (45) are respectively arranged on two opposite sides of the second bottle body (42).

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