CN216198971U

CN216198971U - Liquid ring vacuum pump seal structure

Info

Publication number: CN216198971U
Application number: CN202122341500.XU
Authority: CN
Inventors: 成国友
Original assignee: Shanghai Runchen Pump Industry Co ltd
Current assignee: Shanghai Runchen Pump Industry Co ltd
Priority date: 2021-09-26
Filing date: 2021-09-26
Publication date: 2022-04-05
Anticipated expiration: 2031-09-26

Abstract

The utility model discloses a sealing structure of a liquid ring vacuum pump, belonging to the technical field of vacuum pump accessories and comprising a main disc frame, an auxiliary disc frame, a stress frame and a sealing plate, wherein the tops of the main disc frame and the auxiliary disc frame with the same structure are fixedly connected with a top plate through bolts, the side wall of the main disc frame is bonded with the sealing plate, the side walls of the two sealing plates are connected with the stress frame in a buckling manner, the disc frame is arranged on an impeller shell, a position is reserved for a shaft rod in the disc frame combination, the shaft rod can be contacted with the stress frame limited by the sealing plate, the stress of the stress frame can be transmitted to the stress frame by matching with a spring sleeve, the internal relief of the stress is carried out, the vibration pressure in the operation of the vacuum pump is reduced, the defect that the connection structure is loose due to vibration and the reduction of the sealing performance is caused is avoided, and the sealing plate is provided with a built-in adsorption plate, the continuous drying to the internal environment can be increased, and the stability of the internal environment is ensured.

Description

Liquid ring vacuum pump seal structure

Technical Field

The utility model relates to the technical field of vacuum pump accessories, in particular to a sealing structure of a liquid ring vacuum pump.

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. Generally, a vacuum pump is a device for improving, generating and maintaining a vacuum in a closed space by various methods, and basically, according to the operating principle of the vacuum pump, the vacuum pump can be divided into two types, i.e., a gas trap pump and a gas transfer pump. It is widely used in metallurgy, chemical industry, food, electronic coating and other industries.

The vacuum pump includes a liquid ring vacuum pump, which is a rotary variable volume vacuum pump with an eccentric rotor with fixed blades in it and throws water (liquid) toward the stator wall, the water (liquid) forms a liquid ring concentric with the stator, the liquid ring and the rotor blades form a variable volume.

The existing liquid ring vacuum pump is mature day by day, but a short plate still exists in the self sealing performance, when the poor sealing performance occurs in the combination of the disc and the impeller shell, the internal environment is unstable, impurities also enter the inside, the abnormal sound of the impeller is caused, the poor stability occurs, and the use effect and the service life are directly influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a sealing structure of a liquid ring vacuum pump, which aims to solve the problems that the existing liquid ring vacuum pump proposed in the background art is mature day by day, but a short plate still exists in the self sealing performance, when the sealing performance is poor in the combination of a disc and an impeller shell, the internal environment is unstable, impurities enter the inside, the impeller is abnormal in sound, the stability is poor, and the service effect and the service life are directly influenced.

In order to achieve the purpose, the utility model provides the following technical scheme: the utility model provides a liquid ring vacuum pump seal structure, includes main disc frame, vice disc frame, atress frame and closing plate, the structure is the same main disc frame with the top of vice disc frame is through bolt fixedly connected with roof, the lateral wall of main disc frame bonds there is the closing plate, two the lateral wall buckle of closing plate is connected with the atress frame, main disc frame with the lateral wall of vice disc frame pass through screw fixedly connected with inboard with the curb plate of atress frame contact, the lateral wall of atress frame has cup jointed the spring strip, the lateral wall of spring strip bonds there is the frame of exerting force, the top integrated into one piece of closing plate is connected with the recess, the jack has been seted up at the top of recess, the top of recess bonds main filler strip and vice filler strip, main filler strip with the top of vice filler strip bonds there is the adsorption plate.

Preferably, the bottom of the main disc frame and the bottom of the auxiliary disc frame are fixedly connected with an impeller shell through bolts, a main sleeve is embedded in the top of the impeller shell, and an auxiliary sleeve is embedded in the bottom of the impeller shell.

Preferably, a cavity is reserved between the main disk frame and the auxiliary disk frame, a shaft rod is inserted into the cavity, the main sleeve and the auxiliary sleeve are sleeved on the circumferential outer wall of the shaft rod, and an impeller is sleeved on the circumferential outer wall of the shaft rod.

Preferably, the top buckle of adsorption plate has the screen panel, the bottom integrated into one piece of screen panel is connected with the inserted bar, the inserted bar with the jack is pegged graft.

Preferably, a sealing plate is contacted with the side wall of the impeller shell, and a fixing bolt penetrating through the impeller shell is connected to the side wall of the sealing plate in a threaded manner.

Compared with the prior art, the utility model has the beneficial effects that: this liquid ring vacuum pump seal structure, combination application through the accessory, set up the disc frame on the impeller shell, reserve out the position for the axostylus axostyle in the combination of disc frame, and make the axostylus axostyle can with by the spacing application of force frame contact of closing plate, can cooperate the spring housing to transmit the strength for the atress frame in the application of force frame atress, carry out the inside of strength and alleviate, reduce the shock pressure of vacuum pump in service, it is loose to avoid leading to connection structure because of vibrations, the drawback that the leakproofness reduces appears, and closing plate self possesses built-in adsorption plate, the multiplicable is dry to the continuation of internal environment, ensure that the internal environment is stable.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of a puck frame of the present invention;

FIG. 3 is a schematic view of a sealing plate according to the present invention.

In the figure: 100 main disc frames, 110 side plates, 120 auxiliary disc frames, 130 top plates, 200 stress frames, 210 spring sleeves, 220 force applying frames, 300 sealing plates, 310 grooves, 320 jacks, 330 main backing strips, 340 auxiliary backing strips, 350 adsorption plates, 360 mesh covers, 370 inserted rods, 400 impeller shells, 410 fixing bolts, 420 main sleeves, 430 auxiliary sleeves, 440 shaft rods and 450 impellers.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The utility model provides a sealing structure of a liquid ring vacuum pump, through the combined application of accessories, a disc frame is arranged on an impeller shell, a position is reserved for a shaft rod in the disc frame combination, the shaft rod can be in contact with a force application frame limited by a sealing plate, the force application frame can transmit force to a force application frame in a matched manner with a spring sleeve in stress, the internal relief of the force is carried out, the vibration pressure in the operation of the vacuum pump is reduced, the defect that the connection structure is loose due to vibration and the sealing performance is reduced is avoided, the sealing plate is provided with a built-in adsorption plate, the continuous drying of the internal environment can be increased, the internal environment stability of a drawing is ensured, please refer to 1, 2 and 3, and the sealing structure comprises a main disc frame 100, an auxiliary disc frame 120, a force application frame 200 and a sealing plate 300;

referring to fig. 1 and 2 again, the side wall of the main disc frame 100 has a side plate 110, specifically, the tops of the main disc frame 100 and the sub disc frame 120 having the same structure are fixedly connected with a top plate 130 through bolts, the side walls of the main disc frame 100 and the sub disc frame 120 are fixedly connected with the side plate 110 whose inner side is in contact with the stress frame 200 through screws, the arrangement of the side plate 110 increases the sealing performance, and in the process of combining the top plate 130, a sealing gasket can be sleeved at the bottom of the top plate 130 to increase the stability of the combination;

referring to fig. 2 again, the side wall of the stress frame 200 is connected to the spring bar 210, specifically, the side wall of the stress frame 200 is sleeved with the spring bar 210, the side wall of the spring bar 210 is bonded with the force applying frame 220, the material of the spring bar 210 is corrosion-resistant steel bar, so that the service life can be effectively prolonged, and the spring sleeve 210 is sleeved between the force applying frame 220 and the stress frame 200, so that the stress of the shaft rod 440 is received and then the buffer is matched, the vibration pressure in the operation of the vacuum pump is reduced, and the loose connection structure caused by vibration is avoided;

referring to fig. 1 and 3 again, the side walls of the sealing plates 300 are connected to the main disc frame 100, specifically, the sealing plates 300 are bonded to the side walls of the main disc frame 100, the side walls of the two sealing plates 300 are connected to the stress frame 200 in a snap-fit manner, the top of the sealing plates 300 is integrally connected to a groove 310, the top of the groove 310 is provided with a socket 320, the top of the groove 310 is bonded to a main gasket 330 and an auxiliary gasket 340, the tops of the main gasket 330 and the auxiliary gasket 340 are bonded to an adsorption plate 350, and the material of the adsorption plate 350 may be directly selected from commercially available dry adsorption plates, in some embodiments, the thickness and the number of layers of the adsorption plate 350 may be flexibly adjusted according to actual needs to achieve optimal adaptability;

when the sealing plate is used specifically, the top of the main disc frame 100 and the top of the auxiliary disc frame 120 which have the same structure are fixedly connected with the top plate 130 through bolts, sealing strips are arranged inside the main disc frame 100 and the auxiliary disc frame 120, the two ends of the two sealing plates 300 are respectively provided with the force applying frame 220 and the force bearing frame 200, the spring sleeve 210 is sleeved between the force applying frame 220 and the force bearing frame 200, so that the matching and buffering are performed after the pressure of the shaft rod 440 is received, the vibration pressure in the operation of the vacuum pump is reduced, the defect that the connection structure is loose and the sealing performance is reduced due to vibration is avoided, meanwhile, the shaft rod 440 penetrates through and is combined with the impeller shell 400, the impeller 450 is sleeved outside to improve the using effect of the whole impeller shell 400, the groove 310 with the jack 320 is arranged on the sealing plate 300, the main gasket 330 and the auxiliary gasket 340 are combined in the groove 310, and the adsorption plate 350 is connected on the main gasket 330 and the auxiliary gasket 340, after the adsorption plate 350 is contacted with the mesh enclosure 360, the bottom of the mesh enclosure 360 is combined with the insertion hole 320 by the insertion rod 370, so that the built-in stability is ensured.

Referring to fig. 1 and 2 again, in order to increase the convenience of combining the shaft 440, specifically, the bottom of the main disc frame 100 and the auxiliary disc frame 120 are fixedly connected with the impeller shell 400 through bolts, the top of the impeller shell 400 is embedded with the main sleeve 420, the bottom of the impeller shell 400 is embedded with the auxiliary sleeve 430, and the inner diameters of the main sleeve 420 and the auxiliary sleeve 430 need to be matched with the shaft 440.

Referring to fig. 1 and 2 again, in order to improve the use effect of the impeller shell 400, specifically, a cavity is reserved between the main disk frame 100 and the auxiliary disk frame 120, a shaft 440 is inserted into the cavity, the circumferential outer wall of the shaft 440 is sleeved with the main sleeve 420 and the auxiliary sleeve 430, the main sleeve 420 and the auxiliary sleeve 430 play a role in sealing and connecting the shaft 440, the circumferential outer wall of the shaft 440 is sleeved with the impeller 450, the side wall of the impeller shell 400 is in contact with a sealing plate, and the side wall of the sealing plate is in threaded connection with a fixing bolt 410 penetrating through the impeller shell 400.

Referring to fig. 3 again, in order to fix the position of the adsorption plate 350, specifically, the top of the adsorption plate 350 is fastened with the mesh enclosure 360, the bottom of the mesh enclosure 360 is integrally connected with the insertion rod 370, and the insertion rod 370 is inserted into the insertion hole 320.

While the utility model has been described above with reference to an embodiment, various modifications may be made and equivalents may be substituted for elements thereof without departing from the scope of the utility model. In particular, the various features of the embodiments disclosed herein may be used in any combination, provided that there is no structural conflict, and the combinations are not exhaustively described in this specification merely for the sake of brevity and conservation of resources. Therefore, it is intended that the utility model not be limited to the particular embodiments disclosed, but that the utility model will include all embodiments falling within the scope of the appended claims.

Claims

1. The utility model provides a liquid ring vacuum pump seal structure which characterized in that: the stress-bearing disc comprises a main disc frame (100), an auxiliary disc frame (120), stress frames (200) and sealing plates (300), wherein the main disc frame (100) and the auxiliary disc frame (120) are identical in structure, the tops of the main disc frame (100) and the auxiliary disc frame (120) are fixedly connected with a top plate (130) through bolts, the side wall of the main disc frame (100) is bonded with the sealing plates (300), the side walls of the two sealing plates (300) are connected with the stress frames (200) in a buckling mode, the side walls of the main disc frame (100) and the auxiliary disc frame (120) are fixedly connected with side plates (110) with the inner sides contacting with the stress frames (200) through screws, the side wall of the stress frame (200) is sleeved with spring strips (210), the side wall of the spring strips (210) is bonded with the stress frames (220), the tops of the sealing plates (300) are integrally formed and connected with grooves (310), and jacks (320) are formed in the tops of the grooves (310), the top of the groove (310) is bonded with a main gasket strip (330) and an auxiliary gasket strip (340), and the tops of the main gasket strip (330) and the auxiliary gasket strip (340) are bonded with an adsorption plate (350).

2. The seal structure of a liquid ring vacuum pump according to claim 1, wherein: the impeller is characterized in that the bottom of the main disc frame (100) and the bottom of the auxiliary disc frame (120) are fixedly connected with an impeller shell (400) through bolts, a main sleeve (420) is embedded in the top of the impeller shell (400), and an auxiliary sleeve (430) is embedded in the bottom of the impeller shell (400).

3. The seal structure of a liquid ring vacuum pump according to claim 2, wherein: a cavity channel is reserved between the main disc frame (100) and the auxiliary disc frame (120), a shaft rod (440) is inserted into the cavity channel, the circumferential outer wall of the shaft rod (440) is sleeved with the main sleeve (420) and the auxiliary sleeve (430), and the circumferential outer wall of the shaft rod (440) is sleeved with an impeller (450).

4. The seal structure of a liquid ring vacuum pump according to claim 1, wherein: the top buckle of adsorption plate (350) has screen panel (360), the bottom integrated into one piece of screen panel (360) is connected with inserted bar (370), inserted bar (370) with jack (320) are pegged graft.

5. The seal structure of a liquid ring vacuum pump according to claim 2, wherein: the side wall of the impeller shell (400) is in contact with a sealing plate, and the side wall of the sealing plate is in threaded connection with a fixing bolt (410) penetrating through the impeller shell (400).