Oil gas recovery vacuum pump

Abstract

The utility model discloses an oil gas recovery vacuum pump which comprises a pump body. The air inlet channel is arranged on the pump body; the air outlet channel is arranged on the pump body; the motor is matched with the pump body; the cable is matched with the motor; the filtering mechanism is matched with the air inlet channel; the filtering mechanism comprises an air inlet pipe matched with the air inlet channel, a fixed sleeve obliquely arranged on the outer wall of the air inlet pipe, a bolt screwed in the fixed sleeve, a filter cartridge, an elastic piece and a flow guide protrusion arranged on the inner wall of the air inlet pipe, the flow guide protrusion is provided with a clamping groove matched with the filter cartridge, and the end of the filter cartridge can be attached to the clamping groove; the air inlet pipe is provided with an inlet communicated with the fixed sleeve, the filter cartridge is uniformly provided with a plurality of filter holes, the bolt is provided with a mounting hole, the filter cartridge can slide relative to the inner wall of the mounting hole, one end of the elastic piece is fixed in the mounting hole, and the other end of the elastic piece abuts against the filter cartridge.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of vacuum pump especially is concerned about a kind of oil gas recovery vacuum pump. BACKGROUND

[0002] Oil gas recovery vacuum pump includes pump body and explosion-proof motor, pump body is equipped with pump shaft, one end of pump shaft is connected with rotor, slidable blade is equipped on rotor, the other end of pump shaft is connected with motor shaft, rotor is driven by explosion-proof motor and rotates at high speed, and always slide along the inner wall of pump body, so that blade reciprocates and slides along the radial groove of rotor and always contact with the inner wall of pump body, the pump body is divided into several variable volume cavities, the atmospheric pressure difference is formed by the volume change of several cavities, when the pressure in pump body is less than standard atmospheric pressure, negative pressure (also known as vacuum) is formed, the flow of gas is generated, and the cycle of air intake and exhaust is achieved.

[0003] Patent CN201821728735.6 discloses an oil gas recovery vacuum pump, comprising a pump body, the pump body is provided with a pump shaft, a pump cover is connected with the first end of the pump body, the pump cover is provided with a first bearing, the first bearing is connected with the first end of the pump shaft, an adapter end cover is connected with the second end of the pump body and the explosion-proof motor through the adapter end cover.

[0004] In the above patent, if the filter screen needs to be disassembled, the pipeline connected at the inlet of the pump body needs to be disassembled first, and then the filter screen can be disassembled, which is very inconvenient. UTILITY MODEL CONTENTS

[0005] The content part of the present application is used to introduce the concept in a simple form, which will be described in detail in the specific embodiment part. The content part of the present application is not intended to identify the key features or essential features of the claimed technical solution, nor is it intended to limit the scope of the claimed technical solution.

[0006] In order to solve the technical problems mentioned in the background part, some embodiments of the present application provide an oil gas recovery vacuum pump, comprising:

[0007] Pump body;

[0008] Air inlet channel, provided on the pump body;

[0009] Air outlet channel, provided on the pump body;

[0010] Motor, cooperated with the pump body;

[0011] Cable, cooperated with the motor;

[0012] Filter mechanism, cooperated with the air inlet channel;

[0013] The filtration mechanism includes an intake pipe that mates with the intake channel, a fixed sleeve inclined on the outer wall of the intake pipe, a bolt screwed into the fixed sleeve, a filter cylinder, an elastic element, and a guide protrusion on the inner wall of the intake pipe. The guide protrusion has a groove that mates with the filter cylinder, and the end of the filter cylinder can fit into the groove. The intake pipe has an inlet that communicates with the fixed sleeve. The filter cylinder has multiple filter holes evenly distributed. The bolt has a mounting hole, and the filter cylinder can slide relative to the inner wall of the mounting hole. One end of the elastic element is fixed in the mounting hole, and the other end abuts against the filter cylinder.

[0014] Preferably, the filter cartridge is provided with elastic sealing elements at both ends, and the elastic sealing elements are provided with insertion grooves, which allow the ends of the filter cartridge to be inserted.

[0015] Preferably, a filter screen is provided on the inner wall of the filter cylinder.

[0016] Preferably, the filtration mechanism further includes a pull rod on the bolt, a connecting rod on the pull rod, and a ring plate on the connecting rod. The outer wall of the ring plate is in contact with the filter screen, and the bolt has a through hole through which the pull rod can slide.

[0017] Preferably, the pull rod is provided with a sealing stud, and the inner wall of the through hole is provided with a threaded hole that mates with the sealing stud.

[0018] Preferably, the outer wall of the ring plate is provided with bristles.

[0019] Preferably, the cable is provided with a protection mechanism, which includes an installation sleeve on the motor, a clamping sleeve on the cable, a clamping pad on the cable, and a clamping screw screwed into the installation sleeve. The clamping screw screw is provided with a round hole through which the cable can pass.

[0020] Preferably, the end of the sealing stud is provided with a sealing plate, and the end of the bolt is provided with a sealing groove that mates with the sealing plate.

[0021] Preferably, the sealing plate has an internal hexagonal groove.

[0022] Preferably, the outer wall of the bolt is provided with an elastic sealing strip, and the inner wall of the fixing sleeve is provided with a sealing groove that cooperates with the elastic sealing strip.

[0023] This application provides an oil and gas recovery vacuum pump that facilitates the disassembly of the filter assembly. Attached Figure Description

[0024] The accompanying drawings, which form part of this application, are used to provide a further understanding of the application and to make other features, objects, and advantages of the application more apparent. The illustrative embodiments and descriptions of this application are used to explain the application and do not constitute an undue limitation of the application.

[0025] Additionally, and where appropriate, the same reference numerals have been used throughout the drawings to designate like or similar elements.

[0026] In the drawings:

[0027] Figure 1 It is a schematic view of the structure of the utility model.

[0028] Figure 2 It is a schematic view of the internal structure of the utility model.

[0029] Figure 3 It is a sectional view of the utility model.

[0030] Figure 4 It is a schematic view of the structure of the filtering mechanism of the utility model.

[0031] Figure 5 It is a schematic view of the structure of the air inlet pipe of the utility model.

[0032] Figure 6 It is a schematic view of the partial structure cooperation of the filtering mechanism of the utility model.

[0033] Reference numerals: 1, pump body; 11, pattern runner; 12, cylinder sleeve; 2, air inlet channel; 3, air outlet channel; 4, motor; 5, cable; 6, filtering mechanism; 61, air inlet pipe; 62, fixing sleeve; 63, bolt; 631, mounting hole; 64, filtering cylinder; 641, filtering hole; 65, elastic piece; 67, flow guide protrusion; 671, clamping groove; 68, elastic sealing piece; 681, plug-in groove; 642, filter screen; 691, pull rod; 692, connecting rod; 693, ring plate; 694, sealing stud; 695, brush hair; 696, sealing plate; 697, internal hexagonal recess; 51, mounting sleeve; 52, clamping sleeve; 53, clamping pad; 54, pressing screw; 632, elastic sealing strip; 633, sealing groove. DETAILED DESCRIPTION

[0034] Embodiments of the present disclosure will be described in more detail with reference to the drawings. Although certain embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure can be implemented in various forms and should not be construed as being limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present disclosure can be more thoroughly and completely understood. It should be understood that the drawings of the present disclosure and the embodiments are only for exemplary purposes and are not intended to limit the scope of protection of the present disclosure.

[0035] In addition, it should be further noted that only the parts related to the invention are shown in the drawings for ease of description. The embodiments in the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0036] It should be noted that the terms "first", "second", etc. mentioned in the present disclosure are only used to distinguish different devices, modules or units, and are not intended to limit the order or interdependence of the functions performed by these devices, modules or units.

[0037] It should be noted that the modification of "one" or "multiple" mentioned in the present disclosure is illustrative but not restrictive, and those skilled in the art should understand that unless otherwise explicitly indicated in the context, it should be understood as "one or more".

[0038] The present disclosure will be described in detail below with reference to the accompanying drawings and in conjunction with embodiments.

[0039] As shown in Figures 1-6 An oil and gas recovery vacuum pump, comprising a pump body 1, an air inlet channel 2, an air outlet channel 3, a motor 4, a cable 5 and a filtering mechanism 6, the pump body 1 is fixed on the motor 4, and a pattern runner 11 and a cylinder sleeve 12 are arranged inside the pump body 1, the pattern runner 11 is connected with the output shaft of the motor 4; one end of the cable 5 is connected with the motor 4, and the other end is connected with the controller of the motor 4; the air inlet channel 2 and the air outlet channel 3 are arranged on the top of the pump body 1.

[0040] Specifically, the filtering mechanism 6 comprises an air inlet pipe 61, a fixing sleeve 62, a bolt 63, a filter cartridge 64, an elastic member 65 and a flow guide protrusion 67. The air inlet pipe 61 is fixed at one end of the air inlet channel 2. The fixing sleeve 62 is fixed obliquely on the outer wall of the air inlet pipe 61, and the air inlet pipe 61 is provided with an inlet communicated with the fixing sleeve 62. The bolt 63 is screwed on the inner wall of the fixing sleeve 62, and the inner wall of the fixing sleeve 62 is provided with an internal thread matched with the bolt 63. The end of the bolt 63 is provided with a mounting hole 631. The elastic member 65 is a metal spring, and one end of the elastic member 65 is fixed in the mounting hole 631. One end of the filter cartridge 64 extends into the mounting hole 631 and abuts against the elastic member 65. The filter cartridge 64 can slide relative to the inner wall of the mounting hole 631, and a plurality of filter holes 641 are uniformly provided on the filter cartridge 64. The flow guide protrusion 67 is fixed on the inner wall of the air inlet pipe 61 and is used to fill the gap between the inner wall of the air inlet pipe 61 and the outer wall of the filter cartridge 64. The flow guide protrusion 67 is provided with a clamping groove 671, and the end of the filter cartridge 64 can be attached to the bottom of the clamping groove 671. The outer wall of the end of the filter cartridge 64 can be attached to the side wall of the clamping groove 671. Therefore, the liquid entering the air inlet pipe 61 can only flow into the filter cartridge 64 under the blockage of the flow guide protrusion 67, and then flow from the filter holes 641 to the other end of the air inlet pipe 61, and then flow to the air inlet channel 2. The cooperation of the flow guide protrusion 67 and the clamping groove 671 can accurately position and attach the end of the filter cartridge 64, so as to ensure that the oil gas is fully filtered in the filter cartridge 64 before entering the pump body 1. The elastic member 65 provides continuous elastic force, which not only ensures that the end of the filter cartridge 64 is attached to the clamping groove 671, but also prevents the filter cartridge 64 from being excessively damaged by the bolt 63 being screwed into the fixing sleeve 62. The overall structure simplifies the disassembly and assembly process of the filtering assembly. The filter cartridge 64 can be disassembled by only unscrewing the bolt 63, without the need to disassemble the entire air inlet pipe 61.

[0041] As a preferred solution, the filter cartridge 64 is provided with an elastic sealing member 68 at both ends. The elastic sealing member 68 is provided with a plug-in groove 681, which can be used for inserting the end of the filter cartridge 64. The self-adaptive characteristics of the elastic material can compensate for the gap changes caused by manufacturing tolerances or thermal expansion and contraction, ensuring long-term sealing reliability. The design of the plug-in groove 681 simplifies the installation steps of the filter cartridge 64, which can be fixed by simply inserting it, significantly improving the maintenance efficiency.

[0042] As a preferred solution, the filter screen 642 is arranged on the inner wall of the filter cartridge 64, and the filter mechanism 6 further comprises a pull rod 691, a connecting rod 692 and a ring plate 693. The pull rod 691 is arranged on the bolt 63, and the axis of the pull rod is coincident with the screw axis. The bolt 63 is provided with a through hole through which the pull rod can slide. The connecting rod 692 is fixed on the end of the pull rod. The ring plate 693 is fixed on the connecting rod 692, and the outer wall of the ring plate 693 is attached to the filter screen 642. The linkage mechanism composed of the pull rod, the connecting rod 692 and the ring plate 693 moves the ring plate 693 along the surface of the filter screen 642 by pulling the pull rod, so as to realize the dynamic cleaning or quick replacement of the filter screen 642. The outer wall of the ring plate 693 is closely attached to the filter screen 642, so that the attached objects can be scraped off without disassembling the filter cartridge 64, thereby reducing the downtime maintenance time. The through hole design ensures smooth sliding of the pull rod and convenient operation.

[0043] In other embodiments, a sealing stud 694 is fixed on the pull rod, a threaded hole is arranged on the inner wall of the through hole, and a sealing plate 696 is fixed on the end of the sealing stud 694. The end of the bolt 63 is provided with a sealing groove matched with the sealing plate 696. The sealing stud 694 and the threaded hole form a rigid sealing structure to prevent oil and gas from leaking from the gap between the pull rod and the bolt 63. The threaded connection provides stable locking force to ensure that the pull rod will not loosen in a vibrating environment. The further cooperation between the sealing plate 696 and the sealing groove enhances the sealing effect. The sealing plate 696 is provided with an internal hex recess 697. The outer wall of the ring plate 693 is provided with bristles 695, which are attached to the filter screen 642. The bristles 695 on the outer wall of the ring plate 693 are in contact with the filter screen 642. The bristles 695 automatically brush off the impurities accumulated on the surface during the operation of the equipment or manual operation, thereby maintaining the permeability of the filter screen 642. The flexible design of the bristles 695 avoids damaging the filter screen 642, while improving the cleaning efficiency.

[0044] In other embodiments, the cable 5 is provided with a protection mechanism, which comprises a mounting sleeve 51, a clamping sleeve 52, a clamping pad 53 and a pressing screw 54. The mounting sleeve 51 is fixed on the motor 4. The clamping sleeve 52 is sleeved on the outer wall of the cable 5, and the outer wall of the clamping sleeve 52 is attached to the inner wall of the mounting sleeve 51. The clamping pad 53 is sleeved on the outer wall of the cable 5, and the outer wall of the clamping pad 53 is attached to the inner wall of the mounting sleeve 51. The pressing screw 54 is screwed in the mounting sleeve 51, and the pressing screw 54 is provided with a circular hole through which the cable 5 passes. The cable 5 protection mechanism firmly fixes the cable 5 in the mounting sleeve 51 through the cooperation of the clamping sleeve 52, the clamping pad 53 and the pressing screw 54, thereby preventing the cable 5 from being pulled off or broken by external force.

[0045] In other embodiments, the outer wall of the bolt 63 is provided with an elastic sealing strip 632, and the inner wall of the fixing sleeve 62 is provided with a sealing groove 633 matched with the elastic sealing strip 632. The elastic sealing strip 632 on the outer wall of the bolt 63 and the sealing groove 633 on the inner wall of the fixing sleeve 62 form a radial seal, which compensates for the leakage risk that may be caused by the thread gap.

[0046] The above description is merely exemplary of some embodiments of the present disclosure and of the principles thereof. It is to be understood that the present disclosure is not limited to the above-described technical solutions, and the scope of the application involved in the embodiments of the present disclosure is not limited to the technical solutions formed by the specific combinations of the technical features described above. Meanwhile, the present disclosure should also cover other technical solutions formed by the arbitrary combinations of the technical features described above or equivalent features thereof without departing from the above-described inventive concept. For example, the technical solutions formed by the mutual replacement of the above-described features and the technical features with similar functions disclosed in the embodiments of the present disclosure (but not limited to) form the technical solutions.

Claims

1. An oil and gas recovery vacuum pump, comprising: a pump body; an air inlet channel provided on the pump body; an air outlet channel provided on the pump body; a motor cooperating with the pump body; a cable cooperating with the motor; a filtering mechanism cooperating with the air inlet channel; characterized in that the filtering mechanism comprises an air inlet pipe cooperating with the air inlet channel, a fixed sleeve obliquely provided on the outer wall of the air inlet pipe, a bolt screwed into the fixed sleeve, a filter cartridge, an elastic member and a flow guide protrusion provided on the inner wall of the air inlet pipe, the flow guide protrusion is provided with a clamping groove cooperating with the filter cartridge, the end of the filter cartridge can be attached to the clamping groove, the air inlet pipe is provided with an inlet communicating with the fixed sleeve, the filter cartridge is uniformly provided with a plurality of filter holes, the bolt is provided with a mounting hole, the filter cartridge can slide relative to the inner wall of the mounting hole, one end of the elastic member is fixed in the mounting hole, and the other end abuts against the filter cartridge.

2. The oil and gas recovery vacuum pump of claim 1, wherein: Both ends of the filter cartridge are provided with elastic sealing members, the elastic sealing members are provided with insertion grooves, and the insertion grooves can be used for inserting the end of the filter cartridge.

3. The oil and gas recovery vacuum pump of claim 1, wherein: A filter screen is provided on the inner wall of the filter cartridge.

4. The oil and gas recovery vacuum pump of claim 3, wherein: The filtering mechanism further comprises a pull rod provided on the bolt, a connecting rod provided on the pull rod and a ring plate provided on the connecting rod, the outer wall of the ring plate is attached to the filter screen, and the bolt is provided with a through hole through which the pull rod can slide.

5. The oil and gas recovery vacuum pump of claim 4, wherein: A sealing stud is provided on the pull rod, and a threaded hole cooperating with the sealing stud is provided on the inner wall of the through hole.

6. The oil and gas recovery vacuum pump of claim 4, wherein: Brushes are provided on the outer wall of the ring plate.

7. The oil and gas recovery vacuum pump of claim 1, wherein: The cable is provided with a protection mechanism, the protection mechanism comprises a mounting sleeve provided on the motor, a clamping sleeve sleeved on the cable, a clamping pad sleeved on the cable and a compression screw screwed into the mounting sleeve, and the compression screw is provided with a circular hole through which the cable passes.

8. The oil and gas recovery vacuum pump of claim 5, wherein: The end of the sealing stud is provided with a sealing plate, and the end of the bolt is provided with a sealing groove cooperating with the sealing plate.

9. The oil and gas recovery vacuum pump of claim 8, wherein: The sealing plate is provided with an internal hexagonal groove.

10. The oil and gas recovery vacuum pump of claim 1, wherein: An elastic sealing strip is provided on the outer wall of the bolt, and a sealing groove cooperating with the elastic sealing strip is provided on the inner wall of the fixed sleeve.

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