CN115539387A - Vacuum pump for negative pressure test based on training machine environment-controlled accessory - Google Patents

Abstract

The invention discloses a vacuum pump for testing negative pressure based on a trainer environment-controlled accessory, which relates to the technical field of vacuum pumps and comprises a pump body, wherein the pump body comprises an outer shell and an inner shell, a cooling cavity is arranged between the inner shell and the outer shell, an air cavity is arranged in the inner shell, two variable-pitch rotors are rotatably arranged in the air cavity, one ends of end shafts of the two variable-pitch rotors penetrate through the outer shell and are in transmission connection with a same motor, an air inlet and an air outlet which are communicated with the inner shell are arranged on the outer shell, a cooling component which is sleeved on the inner shell is arranged in the cooling cavity, a side sealing component is arranged on one side of the outer shell, a sealing plate is fixed at the end of the outer shell and the end of the inner shell, a heat dissipation component is fixed on the sealing plate, one end of the variable-pitch rotor, which is far away from the motor, penetrates through the sealing plate and is fixedly connected with a heat dissipation fan, and the heat dissipation fan is arranged in the heat dissipation component. The invention can fully cool the variable-pitch rotor and the inner shell through the cooling liquid and the heat dissipation assembly.

Description

Vacuum pump for negative pressure test based on training machine environment-controlled accessory

Technical Field

The invention relates to the technical field of vacuum pumps, in particular to a vacuum pump for negative pressure test based on a trainer machine environment-controlled accessory.

Background

The training airplane is under negative pressure in a high altitude state, and aiming at the problem, the design concept of the part accessory of the airplane environment control system is to utilize the negative pressure to control and realize a certain function, so the part accessory of the airplane environment control system needs to detect and calibrate the performance of the accessory by testing the negative pressure. The vacuum pump is very common in use, and can vacuumize connected equipment to form a specific working environment, and in the structure of the vacuum pump, the structure of the screw vacuum pump is widely used.

Through retrieval, chinese patent publication No. CN113623209A discloses a large variable pitch screw vacuum pump and a manufacturing method thereof, including a pump body, an air inlet side oil tank cap is fixedly mounted on one end surface of the pump body, an air outlet side oil tank cap is fixedly mounted on the other end surface of the pump body, rotors are rotatably mounted on the side surfaces of the air inlet side oil tank cap and the air outlet side oil tank cap, a variable pitch screw is fixedly connected to the surface of the rotor, the surface of the variable pitch screw is rotatably connected to the side surface of the pump body, a driving gear and a locking expansion sleeve are fixedly mounted on one end surface of the rotor, the driving gear is rotatably connected to the side surface of the air outlet side oil tank cap, an air inlet side bearing seat is arranged on one end surface of the pump body, an air inlet side middle wall is arranged on the surface of the air inlet side bearing seat, and a cylindrical roller bearing, an air inlet side bearing plate and a bearing locking sleeve are fixedly mounted on the side surface of the air inlet side bearing seat.

But the aforesaid vacuum pump still has following weak point, mainly drives the cooling oil through exhaust side oil thrower dish and reaches the purpose of accelerating the heat transfer, and wherein to the pump body and rotor cooling effect relatively poor, can not fully cool down its work.

Disclosure of Invention

The invention aims to provide a vacuum pump for negative pressure test based on a trainer environment-controlled accessory, which aims to solve the technical problem in the prior art.

The invention provides a vacuum pump for negative pressure test based on an environmental control accessory of a trainer, which comprises a pump body, wherein the pump body comprises an outer shell and an inner shell, a cooling cavity is arranged between the inner shell and the outer shell, an air cavity is arranged in the inner shell, two variable pitch rotors are rotatably arranged in the air cavity, one ends of end shafts of the two variable pitch rotors penetrate through the outer shell and are in transmission connection with a same motor, an air inlet and an air outlet which are communicated with the inner shell are arranged on the outer shell, a cooling assembly sleeved on the inner shell is arranged in the cooling cavity, a side sealing assembly is arranged on one side of the outer shell, a sealing plate is fixed at the end heads of the outer shell and the inner shell, a heat dissipation assembly is fixed on the sealing plate, a heat dissipation fan is fixedly connected with the variable pitch rotors through the sealing plate and the heat dissipation assembly, and the heat dissipation fan is arranged in the heat dissipation assembly.

Further, the side seal assembly comprises a side plate fixed on one side of the shell, a liquid inlet pipe orifice and a liquid outlet pipe orifice are arranged on the outer wall of the side plate and communicated with the cooling cavity, the liquid inlet pipe orifice is installed on one side, close to the plugging plate, of the side plate, and the liquid outlet pipe orifice is installed on one side, far away from the plugging plate, of the side plate.

Further, cooling module includes a plurality of collars of fixing at the inner shell outside, and the lateral wall and the laminating of shell inner wall of collar are provided with the breach on the collar, and the breach on two adjacent collars is crisscross distribution from top to bottom.

Further, the cover is equipped with a plurality of sponge rings on the inner shell, and the sponge ring sets up in two bulge loop interval departments, sets up the semicircle cross slot that the equidistance distributes on the lateral wall of sponge ring.

Furthermore, a plurality of heat exchange rings are fixed on one side of the outer wall of the inner shell, which is close to the plugging plate, and side grooves which are distributed equidistantly are formed in the outer walls of the two sides of each heat exchange ring.

Further, the shutoff plate includes the shutoff board and installs four reference columns on the shutoff board, and the locating hole with the reference column adaptation is all seted up to the end corner of inner shell, inlays on the end of inner shell to be equipped with the sealing washer with the shutoff board laminating.

Further, radiator unit is including fixing the heat dissipation frid on the shutoff board, the heat dissipation frid internal fixation has the baffle, form an oil storage chamber between baffle and the heat dissipation frid inside groove, it has the heating panel of two sets of annular distributions to peg graft on the baffle, the one end of heating panel extends to the oil storage intracavity, the end axle of variable pitch rotor passes oil storage chamber and baffle and heat dissipation fan fixed connection, the heat dissipation fan sets up inside the heat dissipation frid, a plurality of side notches have been seted up on the heat dissipation frid lateral wall.

Further, the oil filler point with oil storage chamber intercommunication is seted up on the top of heat dissipation frid, the leakage fluid dram with oil storage chamber intercommunication is seted up to the bottom of heat dissipation frid, all is provided with the end cap in oil filler point and the leakage fluid dram.

Furthermore, the end of each variable pitch rotor, which is close to the motor, is provided with a precise gear, the two precise gears are meshed with each other, a dust cover is arranged outside each precise gear, and two supporting seats are arranged at the bottom of the pump body.

Compared with the prior art, the invention has the beneficial effects that:

(1) According to the invention, the cooling liquid is injected into the cooling cavity through the side sealing assembly, the cooling liquid moves along the flow guide direction of the cooling assembly and wraps the inner shell, the variable-pitch rotor transfers heat generated by compressed gas to the cooling liquid in the rotation process, the variable-pitch rotor and the inner shell are cooled, in addition, the variable-pitch rotor can drive the heat dissipation fan to rotate in the rotation process, the heat dissipation assembly can absorb the heat on the variable-pitch rotor, and the heat dissipation fan cools the heat dissipation assembly in the rotation process, so that the temperature of the variable-pitch rotor is further reduced.

(2) According to the invention, through the arrangement mode of the convex ring and the notch, the movement stroke of the cooling liquid in the cooling cavity can be increased, the heat absorption effect of the cooling liquid is improved, the flowing speed of the cooling liquid in the cooling cavity can be reduced through the sponge ring, the heat absorption effect of the cooling liquid can be fully passed through, in addition, the liquid absorption characteristic of the sponge ring is utilized, the cooling liquid can be uniformly distributed outside the inner shell, the cooling uniformity is improved, the heat exchange area between the end side of the inner shell close to the exhaust port and the cooling liquid can be increased through the heat exchange ring and the side groove, and the cooling effect on the exhaust end of the pump body is improved.

(3) According to the invention, the oil storage cavity can be filled with heat absorption oil, the heat absorption oil is used for absorbing heat and reducing the temperature of the end shaft of the variable-pitch rotor, the heated oil transfers heat to the heat dissipation plate, the heat dissipation fan sucks the outside from the side notch into the heat dissipation groove plate in the rotating process, and the flowing air discharges the heat dissipated by the heat dissipation plate out of the heat dissipation groove plate, so that the aim of continuously reducing the temperature of the variable-pitch rotor is fulfilled.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic perspective view of a first perspective of the present invention;

FIG. 2 is a perspective view of a second perspective of the present invention;

FIG. 3 is a schematic view of a first assembly/disassembly view according to the present invention;

FIG. 4 is a schematic structural view of a second assembly/disassembly view according to the present invention;

FIG. 5 is a schematic view of the pump body according to the present invention;

FIG. 6 is a schematic view of a cooling module according to the present invention;

fig. 7 is a schematic structural diagram of a heat dissipation assembly of the present invention.

Reference numerals:

1. a pump body; 101. a housing; 102. a cooling chamber; 103. an inner shell; 104. an air cavity; 105. a variable pitch rotor; 106. positioning holes; 107. a seal ring; 2. a side seal assembly; 21. a side plate; 22. a liquid inlet pipe orifice; 23. a liquid outlet pipe orifice; 3. an air inlet; 4. a motor; 5. a dust cover; 6. a heat dissipating component; 61. a heat dissipation slot plate; 62. an oil storage chamber; 63. a partition plate; 64. a heat dissipation plate; 65. a side notch; 7. an exhaust port; 8. a supporting seat; 9. a heat dissipation fan; 10. plugging the plate; 11. a cooling assembly; 111. a convex ring; 112. a sponge ring; 113. a semicircular transverse groove; 114. a heat exchange ring; 115. a side groove; 116. and (4) a notch.

Detailed Description

The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it should be understood that the described embodiments are some, but not all embodiments of the present invention.

The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention.

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.

In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, an embodiment of the present invention provides a vacuum pump for negative pressure test based on a trainer environment-controlled accessory, including a pump body 1, where the pump body 1 includes an outer casing 101 and an inner casing 103, a cooling cavity 102 is disposed between the inner casing 103 and the outer casing 101, an air cavity 104 is disposed in the inner casing 103, two variable pitch rotors 105 are rotatably mounted in the air cavity 104, one ends of end shafts of the two variable pitch rotors 105 penetrate through the outer casing 101 to be connected with a same motor 4 in a transmission manner, the outer casing 101 is provided with an air inlet 3 and an air outlet 7 communicated with the inner casing 103, the cooling cavity 102 is provided with a cooling module 11 sleeved on the inner casing 103, one side of the outer casing 101 is provided with a side sealing module 2, ends of the outer casing 101 and the inner casing 103 are fixed with a sealing plate 10, the sealing plate 10 is fixed with a heat dissipation module 6, the heat dissipation module 6 can penetrate through the sealing plate 10 and the heat dissipation module 6 to connect with a heat dissipation fan 9, and the heat dissipation fan 9 is disposed in the heat dissipation module 6.

The specific working method comprises the following steps: inject the coolant liquid into cooling chamber 102 through side seal subassembly 2, the coolant liquid moves and wraps up on inner shell 103 along the water conservancy diversion direction of cooling module 11, variable pitch rotor 105 rotates the heat transfer that the in-process produced compressed gas for the coolant liquid, cool down the work to variable pitch rotor 105 and inner shell 103, variable pitch rotor 105 can drive heat dissipation fan 9 in the rotation process and rotate in addition, heat radiation assembly 6 can absorb the heat on the variable pitch rotor 105, heat dissipation fan 9 rotates the process and cools down heat radiation assembly 6, further reduce the temperature of variable pitch rotor 105.

Specifically, side seal subassembly 2 is including fixing the curb plate 21 in shell 101 one side, be provided with feed liquor mouth of pipe 22 and play liquid mouth of pipe 23 on the outer wall of curb plate 21, feed liquor mouth of pipe 22 and play liquid mouth of pipe 23 and cooling chamber 102 intercommunication, feed liquor mouth of pipe 22 is installed in the curb plate 21 and is close to one side of shutoff plate 10, it installs the one side of keeping away from shutoff plate 10 at curb plate 21 to go out liquid mouth of pipe 23, can carry out the shutoff to shell 101 side through curb plate 21, make cooling chamber 102 form an annular closed cavity, rethread feed liquor mouth of pipe 22 can pour into the coolant liquid into to cooling chamber 102, the coolant liquid can be derived from play liquid mouth of pipe 23 after the absorbed heat, the function of dismantling of device has been increased, be convenient for follow-up maintenance.

Specifically, cooling unit 11 includes a plurality of collars 111 of fixing at the inner casing 103 outside, and the lateral wall of collars 111 and the laminating of outer casing 101 inner wall are provided with breach 116 on collars 111, and breach 116 on two adjacent collars 111 is crisscross distribution from top to bottom, and through the mode that sets up of collars 111 and breach 116, can increase the motion stroke of coolant liquid in cooling chamber 102, improves the heat absorption effect of coolant liquid.

Specifically, the cover is equipped with a plurality of sponge rings 112 on the inner shell 103, sponge ring 112 sets up in two bulge loop 111 intervals, set up the semicircle transverse groove 113 that the equidistance distributes on sponge ring 112's the lateral wall, can reduce the flow velocity of coolant liquid in cooling chamber 102 through sponge ring 112, can fully pass through the heat absorption effect of coolant liquid, utilize sponge ring 112 self imbibition characteristic in addition, can make the even distribution of coolant liquid outside inner shell 103, improve the degree of consistency of cooling.

Specifically, a plurality of heat exchange rings 114 are fixed on one side of the outer wall of the inner shell 103 close to the blocking plate 10, side grooves 115 distributed equidistantly are formed in the outer walls of two sides of each heat exchange ring 114, the heat exchange area between the end side of the inner shell 103 close to the exhaust port 7 and the cooling liquid can be increased through the heat exchange rings 114 and the side grooves 115, and the cooling effect on the exhaust end of the pump body 1 is improved.

Specifically, shutoff plate 10 includes the shutoff board and installs four reference columns on the shutoff board, the locating hole 106 with the reference column adaptation is all seted up to the end corner of inner shell 103, inlay the sealing washer 107 that is equipped with the shutoff board laminating on the end of inner shell 103, the guide effect that can cooperate locating hole 106 through the reference column on the shutoff plate 10, increase the assembly convenience of shutoff board, sealing washer 107 can play sealed effect when shutoff plate 10 assembles on shell 101 and inner shell 103 in addition, avoid the coolant liquid to get into in the air cavity 104.

Specifically, the heat dissipation assembly 6 includes a heat dissipation slot plate 61 fixed on the blocking plate, a partition plate 63 is fixed in the heat dissipation slot plate 61, an oil storage chamber 62 is formed between the partition plate 63 and inner grooves of the heat dissipation slot plate 61, two sets of heat dissipation plates 64 distributed annularly are inserted into the partition plate 63, one end of each heat dissipation plate 64 extends into the oil storage chamber 62, an end shaft of the variable pitch rotor 105 penetrates through the oil storage chamber 62 and the partition plate 63 to be fixedly connected with a heat dissipation fan 9, the heat dissipation fan 9 is arranged inside the heat dissipation slot plate 61, a plurality of side notches 65 are formed in the outer side wall of the heat dissipation slot plate 61, heat absorption oil can be filled in the oil storage chamber 62, the end shaft of the variable pitch rotor 105 absorbs heat and cools down by the heat absorption oil, the heated oil transfers the heat to the heat dissipation plate 64, the heat is absorbed into the heat dissipation slot plate 61 from the outside in the rotation process of the heat dissipation fan 9, the heat dissipated by the heat dissipation plate 64 is discharged out of the heat dissipation slot plate 61 by flowing air, and the purpose of continuous cooling of the variable pitch rotor 105 is achieved.

Specifically, the oil filler point with the 62 intercommunications in oil storage chamber is seted up on the top of heat dissipation frid 61, the leakage fluid dram with the 62 intercommunications in oil storage chamber is seted up to the bottom of heat dissipation frid 61, all is provided with the end cap in oil filler point and the leakage fluid dram, can be convenient for change the work to the fluid in the oil storage chamber 62 through oil filler point and leakage fluid dram.

Specifically, the ends, close to the motor 4, of the two variable pitch rotors 105 are provided with precision gears which are meshed with each other, a dust cover 5 is arranged outside the precision gears, the bottom of the pump body 1 is provided with two social resource supporting seats 8, and the dust cover 5 can protect and prevent dust of the precision gears of the end shafts of the variable pitch rotors 105 _。

The specific working method comprises the following steps: the liquid inlet pipe orifice 22 and the liquid outlet pipe orifice 23 on the side plate 21 are respectively connected to a liquid outlet end and a liquid inlet end of a circulating infusion system, the circulating infusion system comprises an infusion pipeline, an infusion pump and a cooling liquid heat dissipation mechanism, cooling liquid can be injected into the cooling cavity 102 through the circulating infusion system in a matching mode with the liquid inlet pipe orifice 22, the cooling liquid moves along the flow guide direction of the cooling module 11 and wraps the cooling cavity 103, the convex ring 111 and the notch 116 are arranged in a mode, the moving stroke of the cooling liquid in the cooling cavity 102 can be increased, the flowing speed of the cooling liquid in the cooling cavity 102 can be reduced through the sponge ring 112, the heat absorption effect of the cooling liquid can be fully achieved, in addition, the liquid absorption characteristic of the sponge ring 112 is utilized, the cooling liquid can be uniformly distributed outside the inner shell 103, heat generated by compressed gas in the rotating process of the variable pitch rotor 105 can be transferred to the cooling liquid through the inner shell 103, the variable pitch rotor 105 and the inner shell 103 are cooled, the cooling liquid enters the circulating infusion system again from the pipe orifice 23 after heat absorption, the heat absorption rotor 105 can drive the heat dissipation fan 9 to rotate in the rotating process of the liquid outlet, the variable pitch rotor 105 can be filled with oil, the heat absorption rotor 105, the heat absorption fan 64 can be continuously discharged from the heat absorption working groove 64, and the heat dissipation plate 64, and the cooling plate can be continuously discharged by the cooling plate in the cooling plate.

Claims (9)

1. The utility model provides a vacuum pump for negative pressure test based on training machine environmental control annex, includes the pump body (1), the pump body (1) includes shell (101) and inner shell (103), inner shell (103) with be provided with cooling chamber (102) between shell (101), be provided with air cavity (104) in inner shell (103), two variable pitch rotors (105) are installed to air cavity (104) internal rotation, two the dead axle one end of variable pitch rotor (105) is passed shell (101) transmission is connected with same motor (4), be provided with on shell (101) with air inlet (3) and gas vent (7) of inner shell (103) intercommunication, its characterized in that: install the cover in cooling chamber (102) and establish cooling module (11) on inner shell (103), side seal subassembly (2) are installed to one side of shell (101), shell (101) with the end of inner shell (103) is fixed with shutoff plate (10), be fixed with radiator unit (6) on shutoff plate (10), pitch-variable rotor (105) are kept away from the one end of motor (4) is passed shutoff plate (10) with radiator unit (6) fixedly connected with heat dissipation fan (9), heat dissipation fan (9) set up in radiator unit (6).

2. The vacuum pump for negative pressure test based on trainer environment-controlled accessories of claim 1, wherein the vacuum pump comprises: side seal subassembly (2) is including fixing curb plate (21) of shell (101) one side, be provided with feed liquor mouth of pipe (22) and play liquid mouth of pipe (23) on the outer wall of curb plate (21), feed liquor mouth of pipe (22) with play liquid mouth of pipe (23) with cooling chamber (102) intercommunication, the feed liquor mouth of pipe (22) is installed curb plate (21) are close to one side of shutoff plate (10), it installs to go out liquid mouth of pipe (23) curb plate (21) is kept away from one side of shutoff plate (10).

3. The vacuum pump for negative pressure test based on the environmental control accessory of the trainer according to claim 2, wherein: the cooling assembly (11) comprises a plurality of convex rings (111) fixed to the outer portion of the inner shell (103), the outer side wall of each convex ring (111) is attached to the inner wall of the outer shell (101), notches (116) are formed in each convex ring (111), and the notches (116) in the adjacent two convex rings (111) are distributed in a vertically staggered mode.

4. The vacuum pump for negative pressure test based on trainer environment-controlled accessories of claim 3, wherein the vacuum pump comprises: the inner shell (103) is sleeved with a plurality of sponge rings (112), the sponge rings (112) are arranged at intervals of the two convex rings (111), and semicircular transverse grooves (113) distributed at equal intervals are formed in the outer side wall of each sponge ring (112).

5. The vacuum pump for negative pressure test based on trainer environment-controlled accessories of claim 4, wherein the vacuum pump comprises: a plurality of heat exchange rings (114) are fixed on one side, close to the plugging plate (10), of the outer wall of the inner shell (103), and side grooves (115) distributed equidistantly are formed in the outer walls of the two sides of each heat exchange ring (114).

6. The vacuum pump for negative pressure test based on trainer environment-controlled accessories of claim 1, wherein the vacuum pump comprises: the plugging plate (10) comprises a plugging plate and four positioning columns arranged on the plugging plate, positioning holes (106) matched with the positioning columns are formed in the corners of the end of the inner shell (103), and sealing rings (107) attached to the plugging plate are embedded in the end of the inner shell (103).

7. The vacuum pump for negative pressure test based on the environmental control accessory of the trainer according to claim 6, wherein: radiator unit (6) are including fixing heat dissipation frid (61) on the shutoff board, heat dissipation frid (61) internal fixation has baffle (63), baffle (63) with form one oil storage chamber (62) between heat dissipation frid (61) the inside groove, it has two sets of annularly distributed's heating panel (64) to peg graft on baffle (63), the one end of heating panel (64) extends to in the oil storage chamber (62), the end shaft of variable pitch rotor (105) passes oil storage chamber (62) with baffle (63) with heat dissipation fan (9) fixed connection, heat dissipation fan (9) set up inside heat dissipation frid (61), a plurality of side notch (65) have been seted up on heat dissipation frid (61) lateral wall.

8. The vacuum pump for negative pressure test based on the environmental control accessory of the trainer according to claim 7, wherein: the oil filler point with oil storage chamber (62) intercommunication is seted up on the top of heat dissipation frid (61), the bottom of heat dissipation frid (61) seted up with the outage of oil storage chamber (62) intercommunication, the oil filler point with all be provided with the end cap in the outage.

9. The vacuum pump for negative pressure test based on the environmental control accessory of the trainer according to claim 1, wherein: the variable pitch rotor pump is characterized in that one end, close to the motor (4), of each of the two variable pitch rotors (105) is provided with a precision gear, the two precision gears are meshed with each other, a dust cover (5) is arranged outside each precision gear, and two supporting seats (8) are used for social resources at the bottom of the pump body (1).

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