CN113565732A

CN113565732A - Dry vacuum pump

Info

Publication number: CN113565732A
Application number: CN202110548222.7A
Authority: CN
Inventors: 马可继; 赵宇琪
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-19
Filing date: 2021-05-19
Publication date: 2021-10-29

Abstract

The invention relates to the technical field of dry vacuum pumps, in particular to a dry vacuum pump. The utility model provides a dry vacuum pump, includes the piston cylinder, and sliding connection has left slip stopper and right slip stopper in the piston cylinder, and the upper end of left slip stopper and right slip stopper rotates and is connected with the rotation bucket, rotates the bucket and rotates and be connected with the gear, and the gear revolve is connected with the drive, and the upper end of left slip stopper and right slip stopper is connected with first spring hose and second spring hose respectively, rotates the bucket and rotates and connect on the dwang. The device belongs to the oil-free reciprocating vacuum pump, and compare in fluid vacuum pump phenomenon such as oil can not appear dripping, and the pollution of extraction gas is less, compares in the reciprocal holding capacity upper limit of ordinary connecting rod more heighten, and corresponding ultimate vacuum is higher, need not to arrange roots vacuum pump and improves ultimate vacuum.

Description

Dry vacuum pump

Technical Field

The invention relates to the technical field of dry vacuum pumps, in particular to a dry vacuum pump.

Background

In 2013, most of mechanical vacuum pumps used in the vacuum industry use oil, water or other polymers as working media of the pumps, and have multiple functions of cooling, sealing, lubricating and the like in the pumps. With the development of scientific technology and the expansion of vacuum application field, two problems which need to be solved urgently appear in the original mechanical vacuum pump and the air exhaust system formed by the same: one is that the return of the working medium from the pump contaminates the extraction vessel, and this return affects the quality and quantity of the product in many cases, increasing the maintenance costs of the equipment.

An oil-free dry mechanical vacuum pump (also called a dry mechanical pump for short) refers to a mechanical vacuum pump in which the pump can start to pump air from atmospheric pressure and can directly discharge the pumped air to the atmosphere, no oil or other working media exist in a pump cavity, and the limit pressure of the pump is the same magnitude as or close to that of an oil-sealed vacuum pump. An oil-free reciprocating vacuum pump is a vacuum pump that draws air by periodically changing the working volume of a pump chamber (cylinder) by reciprocating a piston, and is also called a piston vacuum pump. Reciprocating vacuum pumps are similar in construction to reciprocating piston compressors. When the vacuum pump works, the suction pipe is connected with a vacuumized container, and the exhaust pipe is directly communicated with the atmosphere. The reciprocating vacuum pump can be used for vacuum distillation, vacuum concentration, vacuum crystallization, vacuum filtration, vacuum drying, concrete vacuum operation and the like.

The existing vacuum pump has the problems that oil drops and the like can occur in the use of an oil medium, gas and a container can be polluted during gas extraction, and when a common dry vacuum pump is used, after the defects are overcome, the extraction strength cannot be satisfied, the corresponding ultimate vacuum is low, and the ultimate vacuum needs to be improved by matching with a Roots vacuum pump.

Disclosure of Invention

The invention aims to provide a dry vacuum pump, and the technical problems to be solved by the invention are that oil liquid media used by the conventional vacuum pump can generate oil drops and the like, gas and a container can be polluted during gas extraction, the defects are overcome when the conventional dry vacuum pump is used, the extraction strength is unsatisfactory, the corresponding ultimate vacuum is low, and the ultimate vacuum is required to be improved by matching with a Roots vacuum pump.

In order to achieve the purpose, the invention adopts the following technical scheme:

the utility model provides a dry vacuum pump, includes the piston cylinder, and sliding connection has left slip stopper and right slip stopper in the piston cylinder, and the upper end of left slip stopper and right slip stopper rotates and is connected with the rotation bucket, rotates the bucket and rotates and be connected with the gear, and the gear revolve is connected with the drive, and the upper end of left slip stopper and right slip stopper is connected with first spring hose and second spring hose respectively, rotates the bucket and rotates and connect on the dwang.

Preferably, the left sliding plug 2 and the right sliding plug 3 have the same structure, the two sliding plugs comprise a sliding block 31, two circles of sealing rings 32 are arranged around the sliding block 31, the sealing rings 32 are attached to the inner side wall of the piston cylinder 1, and a third check valve 33 is arranged inside the sliding block 31.

Preferably, the upper end of each columnar cylinder is solid, the upper ends of the columnar cylinders are fixedly connected with the magnetic blocks, and the number of the columnar cylinders is two.

Preferably, the lower end face of the rotating barrel is obliquely arranged, the lower end of the rotating barrel is fixedly connected with a magnetic disk, the magnetic disk is obliquely arranged and matched with the rotating barrel, a circle of gear ring is fixed on the outer side of the upper end of the rotating barrel, the gear ring is meshed with the gear, and the rotating barrel is rotatably connected with the rotating rod.

Preferably, the two groups of columnar cylinders are matched with the left sliding plug and the right sliding plug, the upper ends of the columnar cylinders matched with the left sliding plug are fixedly connected with the N-pole magnetic blocks, and the upper ends of the columnar cylinders matched with the right sliding plug are fixedly connected with the pole magnetic blocks.

Preferably, the magnetic pole at the left end of the magnetic disk is matched with the magnetic pole block in a pole-to-pole manner, and the magnetic pole at the right end of the magnetic disk is matched with the magnetic pole block in a pole-to-pole manner.

Compared with the prior art, the invention provides a dry vacuum pump which has the following beneficial effects:

1. this dry vacuum pump, the initiative cooling mechanism, the drive makes gear revolve, and the ring gear drives then and rotates the bucket rotation, drives the disk then and rotates, through adopting the magnetism cooperation along with rotating the bucket and rotate and change be the height of a column section of thick bamboo, and then cause the column section of thick bamboo to regularly slide from top to bottom, thereby left side sliding plug and right sliding plug carry out the required piston motion of suction in turn, thereby can reduce the device's wearing and tearing and having improved the device's life.

2. In the dry vacuum pump, the flow directions of the third one-way valve, the first one-way valve and the second one-way valve are all upward, when the left sliding plug and the right sliding plug alternately ascend, the first one-way valve and the second one-way valve are opened, and the third one-way valve is closed; when the left sliding plug and the right sliding plug fall alternately, the first one-way valve and the second one-way valve are closed, the third one-way valve is opened, and then suction is performed in a reciprocating and uninterrupted stroke.

3. This dry vacuum pump, the sealing washer is laminated mutually with the inside lateral wall of piston cylinder, has increaseed the lifting surface area of sliding block for obtain higher vacuum gas when the sliding block is compressed gas downwards.

According to the invention, the device belongs to an oil-free reciprocating vacuum pump, compared with an oil vacuum pump, the phenomena of oil drop and the like can not occur, the pollution of extracted gas is less, compared with a common connecting rod, the reciprocating bearing capacity upper limit is higher, the corresponding ultimate vacuum is higher, and the ultimate vacuum is not required to be improved by matching with a Roots vacuum pump.

Drawings

FIG. 1 is a structural view of a dry vacuum pump according to the present invention;

fig. 2 is a schematic view of the internal structure of the sliding plug according to the present invention.

In the figure: 1. a piston cylinder; 101. a cylinder housing; 102. a base plate; 103. a partition plate; 104. a first check valve; 105. a second one-way valve; 2. a left sliding plug; 3. a right sliding plug; 31. a slider; 32. a seal ring; 33. a third check valve; 34. a cylindrical barrel; 35. a magnetic block; 4. rotating the barrel; 41. a magnetic disk; 42. a ring gear; 5. a gear; 6. driving; 7. a first spring hose; 8. a second spring hose; 9. rotating the rod.

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.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present invention and simplifying the description, and 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.

Example (b): referring to fig. 1 to 2, a dry vacuum pump comprises a piston cylinder 1, wherein a left sliding plug 2 and a right sliding plug 3 are slidably connected in the piston cylinder 1, a rotating barrel 4 is rotatably connected to the upper ends of the left sliding plug 2 and the right sliding plug 3, a gear 5 is rotatably connected to the rotating barrel 4, the gear 5 is rotatably connected to a drive 6, a first spring hose 7 and a second spring hose 8 are respectively connected to the upper ends of the left sliding plug 2 and the right sliding plug 3, and the rotating barrel 4 is rotatably connected to a rotating rod 9.

Through adopting above-mentioned technical scheme, make gear 5 rotate through starting drive 6, make gear 5 then rotate with the drive and rotate bucket 4, what change along with rotating bucket 4's rotation is left side sliding plug 2 and right sliding plug 3 and slide from top to bottom in turn, when sliding from top to bottom in turn through left side sliding plug 2 and right sliding plug 3, can carry out the required piston motion of suction.

Specifically, the piston cylinder 1 comprises a cylinder housing 101, a bottom plate 102 and a partition plate 103 are arranged inside the cylinder housing 101, and a first check valve 104 and a second check valve 105 are symmetrically arranged on the bottom plate 102.

By adopting the above technical scheme, by arranging the first check valve 104 and the second check valve 105 in such a way that the flow directions are both upward, when the left sliding plug 2 and the right sliding plug 3 alternately ascend, the first check valve 104 and the second check valve 105 can be opened, and when the left sliding plug 2 and the right sliding plug 3 alternately descend, the first check valve 104 and the second check valve 105 can be closed.

Specifically, the left sliding plug 2 and the right sliding plug 3 are identical in structure, the two groups of sliding plugs comprise sliding blocks 31, two circles of sealing rings 32 are arranged around the sliding blocks 31, the sealing rings 32 are attached to the inner side walls of the piston cylinders 1, and third check valves 33 are arranged inside the sliding blocks 31.

Through adopting above-mentioned technical scheme, it has two rings of sealing washer 32 to encircle through the periphery at sliding block 31, and during left side activity stopper 2 and the upper and lower alternate motion of right side activity stopper 3, sealing washer 32 laminates with the inside lateral wall of stopper jar 1 mutually to can make sliding block 31's leakproofness improve, can also let sliding block 31 along with sliding block 31's lifting surface increase when the downstream is to gas compression vacuum simultaneously, thereby can obtain the gas of higher vacuum.

Specifically, the upper end of the cylindrical barrel 34 is solid, the upper end of the cylindrical barrel 34 is fixedly connected with the magnetic blocks 35, and the number of the cylindrical barrels 34 is two.

By adopting the above technical scheme, the magnetic blocks 35 are fixedly connected to the upper ends of the two groups of cylindrical cylinders 34, so that the magnetic blocks 35 and the magnetic disk 41 are mutually matched through magnetism, and the cylindrical cylinders 34 are driven to move up and down alternatively.

Specifically, the lower end face of the rotating barrel 4 is obliquely arranged, the lower end of the rotating barrel 4 is fixedly connected with a magnetic disk 41, the magnetic disk 41 is obliquely arranged and matched with the rotating barrel 4, a circle of gear ring 42 is fixed on the outer side of the upper end of the rotating barrel 4, the gear ring 42 is meshed with the gear 5, and the rotating barrel 4 is rotatably connected with the rotating rod 9.

Through adopting above-mentioned technical scheme, through the lower terminal surface slope fixedly connected with disc 41 at rotation bucket 4, can make rotation bucket 4 drive disc 41 and rotate together in the pivoted, set up disc 41 through the slope and can make disc 41 drive column section of thick bamboo 34 up-and-down alternate motion through magnetism, through being fixed with round ring gear 42 and gear 5 intermeshing in the upper end outside of rotation bucket 4, can make gear 5 drive rotation bucket 4 rotate.

Specifically, the two groups of columnar cylinders 34 are matched with the left sliding plug 2 and the right sliding plug 3, the upper ends of the columnar cylinders 34 matched with the left sliding plug 2 are fixedly connected with N-pole magnetic blocks, and the upper ends of the columnar cylinders 34 matched with the right sliding plug 3 are fixedly connected with S-pole magnetic blocks.

Through adopting above-mentioned technical scheme, through setting up two sets of column section of thick bamboo 34 and left sliding plug 2 and the 3 looks adaptations of right sliding plug, thereby can be so that column section of thick bamboo 34 when up-and-down motion, can drive left sliding plug 2 and right sliding plug 3 up-and-down motion together, through the upper end fixedly connected with N utmost point magnetic path at the column section of thick bamboo 34 with the 2 looks adaptations of left sliding plug, can be so that the magnetic pole looks adaptations of N utmost point magnetic path and disk 41, thereby drive left sliding plug 2 up-and-down alternate motion, through the upper end fixedly connected with S utmost point magnetic path at the column section of thick bamboo 34 with the 3 looks adaptations of right sliding plug, can be so that the magnetic pole looks adaptations of S utmost point magnetic path and disk 41, thereby drive right sliding plug 3 up-and-down alternate motion.

Specifically, the left end magnetic pole of the magnetic disk 41 is an S pole and is matched with an N pole magnetic block, and the right end magnetic pole of the magnetic disk 41 is an N pole and is matched with an S pole magnetic block.

By adopting the technical scheme, the magnetic pole of the magnetic disk 41 is matched with the magnetic pole of the magnetic block 35, so that the magnetic disk 41 can rotate, when the magnetic pole at the left end of the magnetic disk 41 is the S pole, the magnetic pole is attracted with the magnetic pole of the N pole magnetic block, so that the columnar cylinder 35 and the left sliding plug 2 are driven to move upwards to extract gas, when the magnetic pole at the right end of the magnetic disk 41 is the N pole, the magnetic pole is attracted with the magnetic pole of the S pole magnetic block, so that the columnar cylinder 35 and the left sliding plug 3 are driven to move upwards to extract gas, when the magnetic disk 41 rotates for one circle, the magnetic pole at the left end of the magnetic disk 41 is the N pole, the magnetic pole is repelled with the magnetic pole of the N pole magnetic block, so that the columnar cylinder 35 and the left sliding plug are driven to move downwards to compress gas, when the magnetic pole at the right end of the magnetic disk 41 is the S pole, the magnetic pole of the S pole is repelled with the magnetic block, so that the columnar cylinder 35 and the right sliding plug 3 are driven to move downwards to compress gas, and the abrasion of the device can be reduced by adopting magnetic matching motion, thereby improving the service life of the device.

The working principle is as follows: the starting drive 6 rotates the gear 5, then the gear ring 42 drives the rotating barrel 4 to rotate, the rotating barrel 4 drives the magnetic disk 41 to rotate, through magnetic cooperation, what changes along with the rotation of the rotating barrel 4 is the height of the cylindrical barrel 34, and then the cylindrical barrel 34 is caused to regularly slide up and down, and then the left sliding plug 2 and the right sliding plug 3 alternately perform piston motion required by suction.

The flow direction of the third check valve 33, the first check valve 104 and the second check valve 105 is upward, when the left sliding plug 2 and the right sliding plug 3 alternately ascend, the first check valve 104 and the second check valve 105 are opened, and the third check valve 33 is closed; when the left sliding plug 2 and the right sliding plug 3 are alternately descended, the first check valve 104 and the second check valve 105 are closed, the third check valve 33 is opened, and the suction stroke is repeated without interruption.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be able to cover the technical scope of the present invention and the equivalent alternatives or modifications according to the technical solution and the inventive concept of the present invention within the technical scope of the present invention.

Claims

1. The dry vacuum pump comprises a piston cylinder (1) and is characterized in that a left sliding plug (2) and a right sliding plug (3) are connected in the piston cylinder (1) in a sliding mode, the upper ends of the left sliding plug (2) and the right sliding plug (3) are rotatably connected with a rotating barrel (4), the rotating barrel (4) is rotatably connected with a gear (5), the gear (5) is rotatably connected with a drive (6), the upper ends of the left sliding plug (2) and the right sliding plug (3) are respectively connected with a first spring hose (7) and a second spring hose (8), and the rotating barrel (4) is rotatably connected onto a rotating rod (9).

2. A dry vacuum pump according to claim 1, characterized in that the piston cylinder (1) comprises a cylinder housing (101), a bottom plate (102) and a partition plate (103) are arranged inside the cylinder housing (101), and a first check valve (104) and a second check valve (105) are symmetrically arranged on the bottom plate (102).

3. A dry vacuum pump as claimed in claim 1, characterized in that the left (2) and right (3) sliding plugs are of the same construction, the two sets of sliding plugs comprise a sliding block (31), the outer periphery of the sliding block (31) is surrounded by two rings of sealing rings (32), the sealing rings (32) are attached to the inner side wall of the piston cylinder (1), and the sliding block (31) is provided with a third check valve (33) inside.

4. The dry vacuum pump as claimed in claim 1, wherein the upper end of the cylindrical canister (34) is solid, the upper end of the cylindrical canister (34) is fixedly connected with the magnet block (35), and the number of the cylindrical canisters (34) is two.

5. A dry vacuum pump according to claim 1, wherein the lower end face of the rotary barrel (4) is obliquely arranged, the lower end of the rotary barrel (4) is fixedly connected with a magnetic disk (41), the magnetic disk (41) is obliquely arranged to be matched with the rotary barrel (4), a ring of gear ring (42) is fixed on the outer side of the upper end of the rotary barrel (4), the gear ring (42) is meshed with the gear (5), and the rotary barrel (4) is rotationally connected with the rotary rod (9).

6. A dry vacuum pump as claimed in claim 4, wherein: the two groups of cylindrical cylinders (34) are matched with the left sliding plug (2) and the right sliding plug (3), the upper ends of the cylindrical cylinders (34) matched with the left sliding plug (2) are fixedly connected with N-pole magnetic blocks, and the upper ends of the cylindrical cylinders (34) matched with the right sliding plug (3) are fixedly connected with S-pole magnetic blocks.

7. A dry vacuum pump as claimed in claim 5, wherein: the magnetic pole at the left end of the magnetic disk (41) is an S pole and is matched with the magnetic block with the N pole, and the magnetic pole at the right end of the magnetic disk (41) is an N pole and is matched with the magnetic block with the S pole.