CN217813943U

CN217813943U - Dry vacuum pump

Info

Publication number: CN217813943U
Application number: CN202222094721.6U
Authority: CN
Inventors: 周文菊
Original assignee: Shitong Haitai Pump Industry Tianjin Co ltd
Current assignee: Shitong Haitai Pump Industry Tianjin Co ltd
Priority date: 2022-08-10
Filing date: 2022-08-10
Publication date: 2022-11-15
Anticipated expiration: 2032-08-10

Abstract

The utility model discloses a dry vacuum pump relates to vacuum pump technical field. The vacuum pump comprises a pump body, wherein the pump body comprises a bottom shell, a first-stage pump shell, a second-stage pump shell, a third-stage pump shell and a top shell, the first-stage pump shell is installed on the upper surface of the bottom shell, the second-stage pump shell is installed on the upper surface of the first-stage pump shell, the third-stage pump shell is installed on the upper surface of the second-stage pump shell, and through the arrangement of the pump body, a pump cavity, a driving rotor, a driven rotor, a driving gear, a driven gear, a gear box, a bearing seat, a rolling bearing and an end cover, after a driving motor is installed on the surface of a motor installation plate and an output end is connected and started with a connecting shaft, gas can be sucked in through an air suction port and discharged through an air exhaust port, and through the mode that the pump body is sequentially assembled through bolt connection among the bottom shell, the first-stage pump shell, the second-stage pump shell, the third-stage pump shell and the top shell, the pump body can be conveniently disassembled and accordingly, the purpose that the vacuum pump is conveniently overhauled and maintained is achieved.

Description

Dry vacuum pump

Technical Field

The utility model relates to a vacuum pump technical field specifically is a dry 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 operation 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. The vacuum pump is widely applied to industries such as metallurgy, chemical engineering, food, electronic coating and the like, and the common vacuum pumps comprise a dry screw vacuum pump, a water ring pump, a reciprocating pump, a slide valve pump, a rotary vane pump, a roots pump, a diffusion pump and the like, and the pumps are main pumps essential for applying vacuum process in various industries of national economy in China.

Most of current vacuum pumps are not convenient for overhaul its inside and maintain, and the practicality is relatively poor, for this reason the utility model provides a dry vacuum pump.

SUMMERY OF THE UTILITY MODEL

The utility model provides a dry vacuum pump aims at solving among the prior art vacuum pump and is not convenient for overhaul the maintenance, the relatively poor problem of practicality inside it.

In order to achieve the above purpose, the utility model discloses a following technical scheme realizes: a dry vacuum pump comprising: the pump comprises a bottom shell, a first-stage pump shell, a second-stage pump shell, a third-stage pump shell and a top shell, wherein the first-stage pump shell is installed on the upper surface of the bottom shell, the second-stage pump shell is installed on the upper surface of the first-stage pump shell, the top shell is installed on the upper surface of the third-stage pump shell, a pump cavity is formed in the pump body, a driving rotor is rotatably connected in the pump cavity, a driven rotor is rotatably connected in the side surface of the driving rotor in the pump cavity, the driving rotor and the driven rotor are matched for use, a driving gear is installed on the lower side of the driving rotor and outside the pump body, a driven gear is installed on the lower side of the driven rotor and outside the pump body, the driving gear is meshed with the driven gear, a connecting shaft is fixedly connected to the lower surface of the driving gear, a gear box is installed on the lower surface of the gear box, a motor installing plate is fixedly connected to the other end of the connecting shaft, an air suction port is formed in one side of the top shell, an air outlet is formed in one side of the bottom shell, the air suction port and the other side of the air outlet are communicated to the interior of the pump cavity, bearing seats are formed in the two sides of the driving rotor and the driven rotor, rolling bearings are installed on the surfaces of the top shell, and the upper surface of the top shell.

As the utility model relates to a dry vacuum pump, the initiative rotor includes driving shaft, main shaft one-level claw head, main shaft second grade claw head, the tertiary claw head of main shaft and main shaft sleeve, the driving shaft is installed in the inside of pump chamber, main shaft one-level claw head is installed in the surface of driving shaft, main shaft second grade claw head is installed in the surface of driving shaft and is located the top of main shaft one-level claw head, the tertiary claw head of main shaft is installed in the surface of driving shaft and is located the top of main shaft second grade claw head, the main shaft sleeve sets up to a plurality ofly, and a plurality of main shaft sleeves overlap respectively locate the surface of driving shaft and be located the downside of main shaft one-level claw head, the both sides of main shaft second grade claw head and the upside of the tertiary claw head of main shaft, be the key-type connection between main shaft one-level claw head, main shaft second grade claw head and the tertiary claw head of main shaft and the driving shaft, drive gear installs in the lower extreme of driving shaft.

As a dry vacuum pump, driven rotor includes driven shaft, subshaft one-level claw head, subshaft second grade claw head, subshaft third grade claw head and subshaft sleeve, the driven shaft is installed in the inside of pump chamber, the surface in the driven shaft is installed to the subshaft one-level claw head, the subshaft second grade claw head is installed in the surface of driven shaft and is located the top of subshaft one-level claw head, the subshaft sleeve sets up to a plurality ofly, and a plurality of subshaft sleeves overlap respectively locate the surface of driven shaft and be located the downside of subshaft one-level claw head, the both sides of subshaft second grade claw head and the upside of subshaft third grade claw head, subshaft one-level claw head, subshaft second grade claw head and subshaft third grade claw head and driven shaft between be the key-type connection, driven gear installs in the lower extreme of driven shaft.

As a dry vacuum pump, the inside of drain pan, one-level pump case, second grade pump case, tertiary pump case and top shell all is provided with the cooling chamber, a plurality of through-holes have been seted up to the inside of the pump body, the inside cooling chamber of drain pan, one-level pump case, second grade pump case, tertiary pump case and top shell passes through the through-hole intercommunication.

As a dry vacuum pump, the four corners of the upper surface of the bottom shell are all connected with hoisting rings by screw threads.

As a dry vacuum pump, all be provided with the gasket between drain pan and one-level pump case, one-level pump case and second grade pump case, second grade pump case and tertiary pump case, tertiary pump case and the top shell.

As a dry vacuum pump, the surface of the top shell and the side surface that is located the induction port have an induction flange joint, the surface of the bottom shell and the side surface that is located the gas vent have an exhaust flange joint.

The utility model provides a dry vacuum pump. The method has the following beneficial effects:

this dry vacuum pump, through setting up the pump body, the pump chamber, the initiative rotor, driven rotor, drive gear, driven gear, the gear box, the bearing frame, antifriction bearing and end cover, after installing driving motor to the surface of motor mounting panel and connecting output and connecting axle and starting, can inhale gas through the induction port and discharge through the gas vent, through setting up the pump body into the drain pan, the one-level pump case, the second grade pump case, loop through the mode of bolted connection equipment between tertiary pump case and the top shell, can be convenient for dismantle the pump body and decompose, thereby reach the purpose of being convenient for overhaul the vacuum pump and maintaining.

Drawings

Fig. 1 is a perspective view of the present invention;

FIG. 2 is an exploded view of the pump body of the present invention;

FIG. 3 is a schematic view of the internal structure of the pump body of the present invention;

fig. 4 is a schematic view of a partial structure of the present invention.

In the figure: 1. a pump body; 101. a bottom case; 102. a first stage pump housing; 103. a secondary pump housing; 104. a third stage pump casing; 105. a top shell; 2. a pump chamber; 3. a driving rotor; 301. a drive shaft; 302. a primary claw head of the main shaft; 303. a main shaft secondary claw head; 304. a main shaft three-stage claw head; 305. a main shaft sleeve; 4. a driven rotor; 401. a driven shaft; 402. a first-stage jaw head of the driven shaft; 403. a secondary jaw head of the driven shaft; 404. a driven shaft three-stage claw head; 405. a driven shaft sleeve; 5. a drive gear; 6. a driven gear; 7. a connecting shaft; 8. a gear case; 9. a motor mounting plate; 10. an air suction port; 11. an exhaust port; 12. a bearing seat; 13. a rolling bearing; 14. an end cap; 15. a cooling chamber; 16. a through hole; 17. hoisting a ring; 18. a gasket; 19. a suction flange joint; 20. an exhaust flange joint.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by persons skilled in the art based on the embodiments in the present application without any creative work belong to the protection scope of the present application.

In the description of the present application, it is to be noted that the terms "upper", "lower", "inner", "outer", "top/bottom", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present application, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "disposed," "sleeved/connected," "connected," and the like are to be construed broadly, e.g., "connected," which may be fixedly connected, detachably connected, or integrally connected; the connection can be mechanical connection or electrical connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those skilled in the art.

Referring to fig. 1-4, the present invention provides a technical solution: the utility model provides a dry vacuum pump, which comprises a pump body 1, pump body 1 includes drain pan 101, one-level pump case 102, second grade pump case 103, tertiary pump case 104 and top shell 105, one-level pump case 102 is installed in the upper surface of drain pan 101, second grade pump case 103 is installed in the upper surface of one-level pump case 102, tertiary pump case 104 is installed in the upper surface of second grade pump case 103, top shell 105 is installed in the upper surface of tertiary pump case 104, pump chamber 2 has been seted up to the inside of pump body 1, the internal rotation of pump chamber 2 is connected with driving rotor 3, the inside of pump chamber 2 just is located the side rotation of driving rotor 3 and is connected with driven rotor 4, driving rotor 3 and driven rotor 4 cooperate the use, the downside of driving rotor 3 just is located the externally mounted of pump body 1 has drive gear 5, driven gear 6 is just located the externally mounted of pump body 1 to the downside of driven rotor 4, drive gear 5 meshes with driven gear 6, the lower fixed surface of drive gear 5 is connected with connecting axle 7, gear box 8 is installed to the lower fixed surface of the lower surface of drive rotor 8 is connected with motor mounting board 9, the other end of connecting axle 7 sets up in the downside of motor mounting board 9, top shell one side has seted up 10 in one side of top shell 105, connecting axle 11 and the inside exhaust port 12 that all communicates to the top shell 3 and the rotor bearing seat 13 that the rotor end cover 12 that the rotor 3 and the top shell is located the rotor 3 and the rotor bearing seat 13 of the inside of the rotor 3, the rotor bearing seat, the top shell 13.

In the embodiment of the utility model, through setting up the pump body 1, pump chamber 2, driving rotor 3, driven rotor 4, drive gear 5, driven gear 6, gear box 8, bearing frame 12, antifriction bearing 13 and end cover 14, after installing driving motor to the surface of motor mounting panel 9 and being connected the output and connecting axle 7 and starting, can inhale gas through induction port 10 and discharge through gas vent 11, through setting up the pump body 1 into drain pan 101, one-level pump case 102, second grade pump case 103, loop through the mode of bolted connection equipment between tertiary pump case 104 and the top shell 105, can be convenient for dismantle the decomposition to the pump body 1, thereby reach the purpose of being convenient for overhaul the vacuum pump and maintain.

Specifically, the driving rotor 3 includes a driving shaft 301, a first-stage main shaft claw head 302, a second-stage main shaft claw head 303, a third-stage main shaft claw head 304 and a main shaft sleeve 305, the driving shaft 301 is installed inside the pump cavity 2, the first-stage main shaft claw head 302 is installed on the surface of the driving shaft 301, the second-stage main shaft claw head 303 is installed on the surface of the driving shaft 301 and above the first-stage main shaft claw head 302, the third-stage main shaft claw head 304 is installed on the surface of the driving shaft 301 and above the second-stage main shaft claw head 303, the plurality of main shaft sleeves 305 are respectively sleeved on the surface of the driving shaft 301 and below the first-stage main shaft claw head 302, two sides of the second-stage main shaft claw head 303 and above the third-stage main shaft claw head 304, the first-stage main shaft claw head 302, the second-stage main shaft claw head 303, the third-stage main shaft claw head 304 and the driving shaft 301 are all in key connection, the driving gear 5 is installed at the lower end of the driving shaft 301, the driven rotor 4 includes a driven shaft 401, the driven shaft 401 is mounted inside the pump cavity 2, the driven shaft primary claw heads 402 are mounted on the surface of the driven shaft 401, the driven shaft secondary claw heads 403 are mounted on the surface of the driven shaft 401 and located above the driven shaft primary claw heads 402, the driven shaft tertiary claw heads 404 are mounted on the surface of the driven shaft 401 and located above the driven shaft secondary claw heads 403, the driven shaft sleeves 405 are arranged in a plurality, the driven shaft sleeves 405 are respectively sleeved on the surface of the driven shaft 401 and located on the lower side of the driven shaft primary claw heads 402, on the two sides of the driven shaft secondary claw heads 403 and on the upper side of the driven shaft tertiary claw heads 404, the driven shaft primary claw heads 402, the driven shaft secondary claw heads 403 and the driven shaft tertiary claw heads 404 are in key connection with the driven shaft 401, and the driven gear 6 is mounted at the lower end of the driven shaft 401.

In the embodiment of the utility model, through setting up main shaft sleeve 305 and main shaft one-level claw head 302, main shaft second grade claw head 303 and the tertiary claw head 304 of main shaft and the key-type connection between driving shaft 301, can be with main shaft one-level claw head 302, main shaft second grade claw head 303 and the tertiary claw head 304 of main shaft fix spacingly in the axial of driving shaft 301 and circumference, through setting up from shaft sleeve 405 and from shaft one-level claw head 402, from shaft second grade claw head 403 and the key-type connection between three-level claw head 404 of follow shaft and the driven shaft 401, can be with fixing spacingly in the axial of driven shaft 401 and circumference from shaft one-level claw head 403, from shaft second grade claw head 403 and from shaft tertiary claw head 404, through main shaft one-level claw head 302 and from shaft one-level claw head 402, main shaft second grade claw head 303 and from shaft second grade claw head 403, main shaft third grade claw head 304 and the cooperation rotation between the three-level claw head 404 of follow shaft, carry out the circulating exhaust process of breathing in air, the purpose that the pump is in succession bled has been realized.

Specifically, the bottom shell 101, the first-stage pump shell 102, the second-stage pump shell 103, the third-stage pump shell 104 and the top shell 105 are all provided with cooling cavities 15, the pump body 1 is provided with a plurality of through holes 16, and the bottom shell 101, the first-stage pump shell 102, the second-stage pump shell 103, the third-stage pump shell 104 and the cooling cavities 15 in the top shell 105 are communicated through the through holes 16.

The utility model discloses an in the concrete embodiment, through setting up cooling chamber 15 and through-hole 16, can be at the cooling arrangement of the surface mounting and the 15 intercommunication in cooling chamber of the pump body 1, and then can cool down to it when this device moves, ensure the stability of this device operation.

Specifically, the four corners of the upper surface of the bottom casing 101 are all connected with the hoisting rings 17 through threads.

The utility model discloses an in the embodiment, through setting up hoist and mount ring 17, can be convenient for hoist this device.

Specifically, the spacer 18 is provided between the bottom shell 101 and the first-stage pump casing 102, between the first-stage pump casing 102 and the second-stage pump casing 103, between the second-stage pump casing 103 and the third-stage pump casing 104, and between the third-stage pump casing 104 and the top shell 105.

In the embodiment of the present invention, by providing the gasket 18, the sealing performance of the pump body 1 can be improved.

Specifically, an intake flange joint 19 is attached to the surface of the top case 105 and on the side of the intake port 10, and an exhaust flange joint 20 is attached to the surface of the bottom case 101 and on the side of the exhaust port 11.

In the embodiment of the present invention, the connection of the device to other equipment can be facilitated by providing the suction flange joint 19 and the exhaust flange joint 20.

The working principle is as follows: when the air suction and exhaust device is used, the driving motor is mounted on the lower side of the gear box 8 through the motor mounting plate 9, the output end of the driving motor is connected with the connecting shaft 7 through a coupler, the connecting shaft 7 is driven to rotate through the driving motor, and further the driving gear 5 is meshed with the driven gear 6, so that the driving rotor 3 and the driven rotor 4 are driven by power of the driving motor to synchronously rotate in the reverse direction, the interior of the pump cavity 2 is further divided into an air suction cavity and an air exhaust cavity by the main shaft first-stage claw head 302, the driven shaft first-stage claw head 402, the main shaft second-stage claw head 303, the driven shaft second-stage claw head 403, the main shaft third-stage claw head 304 and the driven shaft third-stage claw head 404, and the air suction and exhaust processes are performed in a circulating manner along with synchronous reverse continuous operation of the driving rotor 3 and the driven rotor 4.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A dry vacuum pump, comprising: the pump body (1) comprises a bottom shell (101), a first-stage pump shell (102), a second-stage pump shell (103), a third-stage pump shell (104) and a top shell (105), wherein the first-stage pump shell (102) is installed on the upper surface of the bottom shell (101), the second-stage pump shell (103) is installed on the upper surface of the first-stage pump shell (102), the third-stage pump shell (104) is installed on the upper surface of the second-stage pump shell (103), the top shell (105) is installed on the upper surface of the third-stage pump shell (104), a pump cavity (2) is formed in the pump body (1), a driving rotor (3) is rotatably connected to the inner portion of the pump cavity (2) and located on the side face of the driving rotor (3), a driven rotor (4) is rotatably connected to the inner portion of the pump cavity (2), the driving rotor (3) and the driven rotor (4) are used in a matched mode, a driving gear (5) is installed on the outer portion, a lower side face of the driving rotor (3) and located on the outer portion of the pump body (1), a driven gear (6) is installed on the lower side of the driven rotor (4), the lower side of the driven rotor (1), the driven gear (5) and located on the outer portion of the pump body (1), the gear box (6), the gear box (7) is fixedly connected to a connecting shaft (8), the lower fixed surface of gear box (8) is connected with motor mounting panel (9), the other end of connecting axle (7) sets up in the downside of motor mounting panel (9), induction port (10) have been seted up to one side of top shell (105), gas vent (11) have been seted up to one side of drain pan (101), the opposite side of induction port (10) and gas vent (11) all communicates to the inside of pump chamber (2), bearing frame (12) are all installed to the inside of the pump body (1) and the both sides that are located driving rotor (3) and driven rotor (4), antifriction bearing (13) are all installed to the inside that just is located bearing frame (12) on the surface of driving rotor (3) and driven rotor (4), the last surface mounting of top shell (105) has end cover (14).

2. A dry vacuum pump as claimed in claim 1, wherein: the utility model discloses a three-level claw head drive mechanism, including driving shaft (301), main shaft one-level claw head (302), main shaft second grade claw head (303), the tertiary claw head of main shaft (304) and main shaft sleeve (305), driving shaft (301) are installed in the inside of pump chamber (2), main shaft one-level claw head (302) are installed on the surface of driving shaft (301), main shaft second grade claw head (303) are installed on the surface of driving shaft (301) and are located the top of main shaft one-level claw head (302), main shaft third grade claw head (304) are installed on the surface of driving shaft (301) and are located the top of main shaft second grade claw head (303), main shaft sleeve (305) set up to a plurality ofly, and a plurality of main shaft sleeve (305) overlap respectively and locate the surface of driving shaft (301) and be located the downside of main shaft one-level claw head (302), the both sides of main shaft second grade claw head (303) and the upside of main shaft third grade claw head (304), main shaft first grade claw head (302), main shaft second grade claw head (303) and main shaft third grade claw head (304) and the upside of main shaft are between driving shaft (301), main shaft first grade claw head (302), main shaft second grade claw head (303) are installed in the lower extreme of driving gear (301), driving shaft (5).

3. A dry vacuum pump as claimed in claim 1, wherein: driven rotor (4) include driven shaft (401), follow axle one-level claw head (402), follow axle second grade claw head (403), follow axle third grade claw head (404) and follow axle sleeve (405), driven shaft (401) are installed in the inside of pump chamber (2), follow axle one-level claw head (402) and install in the surface of driven shaft (401), follow axle second grade claw head (403) install in the surface of driven shaft (401) and be located the top of following axle one-level claw head (402), follow axle third grade claw head (404) and install in the surface of driven shaft (401) and be located the top of following axle second grade claw head (403), follow axle sleeve (405) set up to a plurality ofly, a plurality of follow axle sleeve (405) overlap respectively and locate the surface of driven shaft (401) and be located the downside of following axle one-level claw head (402), the second grade follow both sides of axle claw head (403) and follow the upside of axle third grade claw head (404), follow axle first grade claw head (402), follow axle second grade claw head (403) and follow axle third grade claw head (404) and the upside of driven shaft (401) are, follow axle first grade claw head (401) and follow the lower extreme key-up in driven gear (6).

4. A dry vacuum pump as claimed in claim 1, wherein: the cooling pump is characterized in that cooling cavities (15) are arranged inside the bottom shell (101), the first-stage pump shell (102), the second-stage pump shell (103), the third-stage pump shell (104) and the top shell (105), a plurality of through holes (16) are formed inside the pump body (1), and the cooling cavities (15) inside the bottom shell (101), the first-stage pump shell (102), the second-stage pump shell (103), the third-stage pump shell (104) and the top shell (105) are communicated through the through holes (16).

5. A dry vacuum pump as claimed in claim 1, wherein: and four corners of the upper surface of the bottom shell (101) are in threaded connection with hoisting rings (17).

6. A dry vacuum pump as claimed in claim 1, wherein: gaskets (18) are arranged between the bottom shell (101) and the first-stage pump shell (102), between the first-stage pump shell (102) and the second-stage pump shell (103), between the second-stage pump shell (103) and the third-stage pump shell (104), and between the third-stage pump shell (104) and the top shell (105).

7. A dry vacuum pump as claimed in claim 1, wherein: and an air suction flange joint (19) is arranged on the surface of the top shell (105) and positioned on the side surface of the air suction port (10), and an air exhaust flange joint (20) is arranged on the surface of the bottom shell (101) and positioned on the side surface of the air exhaust port (11).