CN111306046B - Double-diaphragm vacuum pump for vehicle - Google Patents
Double-diaphragm vacuum pump for vehicle Download PDFInfo
- Publication number
- CN111306046B CN111306046B CN202010265558.8A CN202010265558A CN111306046B CN 111306046 B CN111306046 B CN 111306046B CN 202010265558 A CN202010265558 A CN 202010265558A CN 111306046 B CN111306046 B CN 111306046B
- Authority
- CN
- China
- Prior art keywords
- air inlet
- air outlet
- groove
- sealing ring
- diaphragm
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B45/00—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids
- F04B45/04—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms
- F04B45/043—Pumps or pumping installations having flexible working members and specially adapted for elastic fluids having plate-like flexible members, e.g. diaphragms two or more plate-like pumping flexible members in parallel
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/12—Casings; Cylinders; Cylinder heads; Fluid connections
- F04B39/121—Casings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/14—Provisions for readily assembling or disassembling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The invention discloses a double-diaphragm vacuum pump for a vehicle, which is characterized in that an air inlet thought and an air inlet structure are redesigned, so that an air inlet channel can be completed after a valve cover, a valve plate and a special-shaped sealing ring are assembled; through the structural design, a line design can be realized in an effective space, and the defect that the closed air inlet channel in the prior art is large in design volume if the closed air inlet channel is adopted is avoided; through the design, the design of the special-shaped sealing ring supporting platform is added, so that the special-shaped sealing ring is basically on the same plane during manufacturing and use, bending loss and deformation in the installation process are reduced, and the service life is prolonged.
Description
Technical Field
The invention relates to the technical field of vacuum pumps for vehicles, in particular to a double-diaphragm vacuum pump for a vehicle.
Background
At present, the electric vacuum pump for the vehicle mainly comprises a piston type vacuum pump, a rotary vane type vacuum pump and a diaphragm type vacuum pump, and in use, the diaphragm type vacuum pump is found to be far better than other two vacuum pumps in reliability and performance effects, but due to the fact that the traditional vacuum pump is large in size, the limitation of space on the vehicle often causes difficult installation and use. For example, chinese patent document CN105889041A, CN105952624A, CN15889042a discloses a diaphragm type electric vacuum pump for automobile and its components, which comprises a pump body and a motor, the pump body is provided with an air inlet and outlet channel, the left and right ends of the pump body are provided with an air inlet and outlet cavity and an air outlet cavity, the air outlet end cover component comprises an end cover and a shield, the end cover and the shield form a first-stage buffer cavity and a second-stage buffer cavity, the first-stage buffer cavity is provided with an end cover one-way valve, the second-stage buffer cavity is provided with a sound absorbing sponge, and the air is discharged from the air outlet channel through the stretched air inlet and outlet channel. The vacuum pump has the advantages of small volume and the like, but the left and right end cover assemblies and the side plate are complex in structure, and the processing and the assembly are complex. In order to solve the technical problem, chinese patent document CN207033698U discloses an electric diaphragm vacuum pump for a vehicle, which comprises a motor, a crankcase, a valve cover, a valve plate, a connecting rod, a muffler and an air suction connector, wherein the motor is directly connected with a driving eccentric shaft; the valve cover, the valve plate and the connecting rod are distributed in bilateral symmetry, the end part of the connecting rod is provided with a diaphragm, a special-shaped sealing ring is arranged between the valve cover and the valve plate, and the sealing effect between the valve cover and the valve plate is achieved by arranging the special-shaped sealing ring, so that air leakage is reduced in the air extraction process, and the air extraction efficiency is improved. Although the above structure has achieved a certain technical effect, the research and development personnel consider that the structure of the vacuum pump still has great technical improvement.
Disclosure of Invention
In order to solve the technical problems, the invention provides a double-diaphragm vacuum pump for a vehicle, which comprises a crankcase, wherein a driving assembly, a silencing exhaust assembly, a diaphragm and two groups of end cover assemblies are arranged on the crankcase; each end cap assembly comprises a valve cap, a valve plate and a special-shaped sealing ring arranged between the valve cap and the valve plate; the valve cover comprises a valve cover main body and an air inlet baffle, wherein the valve cover main body is arranged on the valve plate or the crankcase and comprises an air inlet groove and an air outlet groove, an air inlet inclined surface is formed at one side wall of the air inlet groove, a baffle through hole is formed in the air inlet baffle, when the air inlet baffle is covered on the air inlet groove, a valve cover air inlet is formed between the air inlet inclined surface and the side edge of the air inlet baffle, and an air outlet inclined surface is formed at one side of the side wall of the air outlet groove; the valve plate comprises a mounting part fixedly mounted with the crankcase and an arc-shaped structure formed in the mounting part, the mounting part is used for mounting the valve plate on the crankcase, a first valve plate air inlet and a second valve plate air outlet are formed in the mounting part, the arc-shaped structure comprises an inner concave surface and an outer convex surface, a special-shaped sealing ring supporting platform is formed on the outer convex surface, the opposite ring supporting platform is formed by riding and attaching the outer convex surface, an air inlet through groove and an air outlet through groove are formed in the opposite ring supporting platform, the first valve plate air inlet is communicated with the air inlet through groove, the second valve plate air outlet is communicated with the air outlet through groove, and a second valve plate air inlet and a first valve plate air outlet are also formed in the valve plate; the air inlet of the first valve plate is communicated with the air inlet of the crankcase, the air outlet of the second valve plate is communicated with the air outlet of the crankcase, and the air outlet is communicated with the inner cavity of the crankcase through an air outlet pipeline; the special-shaped sealing ring comprises an air inlet sealing ring and an air outlet sealing ring, the air inlet sealing ring is used for enclosing the air inlet through groove, the air inlet of the second valve plate, the through hole of the baffle, the air inlet groove and the air inlet of the valve cover, and the air outlet sealing ring is used for enclosing the air outlet through groove, the air outlet of the first valve plate, the air outlet groove and the air outlet inclined plane; an inner sealing ring is formed in the air inlet sealing ring, during installation, the inner sealing ring is used for encircling the baffle through hole and the second valve plate air inlet, an air inlet diaphragm is connected in the inner sealing ring, the air inlet diaphragm is matched with the baffle through hole to realize an air inlet process, an air outlet diaphragm is connected in the air outlet sealing ring, and the air outlet diaphragm is matched with the first valve plate air outlet to realize an air outlet process.
Further, an air inlet groove clamping structure is arranged on one end face of the air inlet baffle, and when the air inlet baffle is installed, the air inlet groove clamping structure is matched with the inner wall of the air inlet groove.
Further, the periphery of the air inlet groove is provided with a supporting groove, and the air inlet baffle is clamped with the supporting groove when being installed.
Further, the support groove side walls form groove protrusions.
Further, the other end face of the air inlet baffle forms an air inlet diaphragm limiting structure which is matched with an air inlet diaphragm empty groove between the air inlet diaphragm and the inner sealing ring.
Further, the air inlet diaphragm limiting structure is of a semi-surrounding structure.
Further, a semi-surrounding connection structure is arranged between the inner sealing ring and the air inlet sealing ring.
Further, a U-shaped connecting structure is arranged between the inner sealing ring and the air inlet sealing ring.
Further, the air outlet groove is an inclined groove.
Further, a yielding groove is formed on the air outlet groove; a reinforcing structure is formed on the air outlet membrane; when the reinforcement structure is installed, the reinforcement structure is partially overlapped with the yielding groove.
Further, a limiting block is formed on the air outlet membrane and is in contact with the air outlet groove.
Further, the air outlet membrane is connected with the air outlet sealing ring at three positions.
Further, an air outlet diaphragm empty groove is formed between the air outlet diaphragm and the air outlet sealing ring, an air outlet diaphragm limiting structure is formed on the valve cover main body, and when the air outlet diaphragm limiting structure is installed, the air outlet diaphragm limiting structure stretches into the air outlet diaphragm empty groove.
Further, a special-shaped sealing ring mounting groove is formed in the valve cover main body.
Further, an air inlet diaphragm limiting boss is formed at the air inlet of the second valve plate and used for limiting the air inlet diaphragm, and the inner sealing ring encloses the air inlet diaphragm limiting boss.
Further, the air inlet diaphragm limiting boss is formed with a boss inclined plane.
Further, the first valve plate air outlet is an annular boss air outlet.
Further, reinforcing ribs are respectively formed on two sides of the valve cover main body, and free ends of the reinforcing ribs are mounted on the valve plate or the crankcase.
Further, a valve plate mounting hole is formed in the mounting portion of the valve plate, a valve cover mounting hole is formed in the valve cover main plate, a reinforcing rib mounting hole is formed in the reinforcing rib, a threaded mounting hole is formed in the crankcase, the valve cover mounting hole and the reinforcing rib mounting hole are matched with the valve plate mounting hole, and the valve cover and the valve plate are mounted on the crankcase through bolts.
Further, a first locating pin structure is formed between the valve cover and the valve plate; and a second locating pin structure is formed between the valve plate and the crankcase.
Further, the side of dysmorphism sealing washer mounting groove is including forming outside limit, the piece of admitting air and the piece of giving vent to anger in the valve gap main part, the piece of admitting air with the logical groove looks adaptation of admitting air, the piece of giving vent to anger with the logical groove looks adaptation of giving vent to anger, the inclined plane of admitting air extends to the piece of admitting air, the inclined plane of giving vent to anger extends to the piece of giving vent to anger.
Further, the air inlet sealing ring and the air outlet sealing ring are integrally formed. After the integral molding, the shared structure can be synthesized into a single structure.
Further, the shape of the air inlet sealing ring is one big or one small with that of the air outlet sealing ring.
Further, the air inlet of the crankcase is connected with the air inlet joint through the air inlet pipeline.
Further, the air inlet and the air outlet of the crankcase are respectively provided with an air inlet sealing ring groove and an air outlet sealing ring groove, and when the crankcase is installed, the grooves are internally provided with an air inlet sealing ring and an air outlet sealing ring.
Further, the two sets of end cap assemblies are symmetrically mounted. The crankcase is also provided with a first columnar mounting hole and a second columnar mounting hole.
Compared with the prior art, the technical scheme of the invention has the following advantages:
(1) According to the double-diaphragm vacuum pump for the vehicle, through redesigning the air inlet thought and the air inlet structure, the air inlet channel can realize a complete air inlet channel after the valve cover, the valve plate and the special-shaped sealing ring are assembled, and compared with the air inlet channel which is independently realized in the valve cover, the double-diaphragm vacuum pump for the vehicle has the advantages that the structure is more compact, the volume is smaller, the strength is higher, and meanwhile, the open structure is superior to the non-open structure in processing, so that the mold is easier to process and develop; through the structural design, a line design can be realized in an effective space, and the defect that the closed air inlet channel in the prior art is large in design volume if the closed air inlet channel is adopted is avoided; through the design, the design of the special-shaped sealing ring supporting platform is added, so that the special-shaped sealing ring is basically on the same plane during manufacturing and use, bending loss and deformation in the installation process are reduced, and the service life is prolonged; furthermore, the air inlet sealing ring and the air outlet sealing ring are separately designed, so that the possibility of air mixing is reduced; the design of positioning holes on the air inlet and outlet membrane is removed, so that the problem of inaccurate positioning caused by a small amount of deformation of the air inlet and outlet membrane is solved; the structure of the air inlet diaphragm positioning is enlarged through the structure of the air inlet diaphragm semi-surrounding positioning, so that the problem of inaccurate positioning is further reduced; further, through this innovation, the air inlet channel basically is the level setting, has reduced damping structure in current oblique angle air inlet design, and gaseous smooth transition has avoided extra gas to make an uproar.
(2) According to the double-diaphragm vacuum pump for the vehicle, the air inlet baffle plate is matched with the air inlet groove more adaptively by arranging the air inlet groove clamping structure and the supporting groove; further, a groove bulge is formed on the inner wall of the supporting groove and is extruded towards the side wall of the air inlet baffle, so that the air inlet baffle is more firmly installed; meanwhile, the other end face of the air inlet baffle forms an air inlet diaphragm limiting structure which is of a semi-surrounding structure, so that the limiting process and the structure are easier to realize and do not deform.
(3) According to the double-diaphragm vacuum pump for the vehicle, the U-shaped connecting structure is arranged between the inner sealing ring and the air inlet sealing ring, so that the connection between the inner sealing ring and the air inlet sealing ring is firmer, deformation and pulling between the inner sealing ring and the air inlet sealing ring are reduced in the use process of the inner sealing ring, and further longer service life is realized on the plane sealing surface.
(4) According to the double-diaphragm vacuum pump for the vehicle, the positions of the abdication grooves and the reinforcement structure are abducted, and after the strength of the air outlet diaphragm is increased, the rapid return to the original position can be realized; the limiting block of the air outlet diaphragm is abutted against the air outlet groove, so that the air outlet diaphragm is partially opened, and the opening pressure is reduced; furthermore, the air outlet diaphragm is connected with the air outlet sealing ring at three positions, so that the air outlet diaphragm is partially opened, one corner of the opening pressure is reduced, the opening pressure is further reduced, an air outlet diaphragm empty groove is formed between the air outlet diaphragm and the air outlet sealing ring, an air outlet diaphragm limiting structure is formed on the valve cover, and when the air outlet diaphragm limiting structure is installed, the air outlet diaphragm limiting structure stretches into the air outlet diaphragm empty groove, and deformation of the air outlet diaphragm is further reduced.
(5) According to the vehicle double-diaphragm vacuum pump, the air inlet of the second valve plate is provided with the air inlet diaphragm limiting boss for limiting the air inlet diaphragm, the air inlet diaphragm limiting boss is covered by the inner sealing ring, so that the air inlet diaphragm is prevented from being adhered to the supporting platform, the air flow is ensured to be normal, and the smooth transition of the air flow is ensured by adding the boss inclined plane; the first valve plate gas outlet is an annular boss gas outlet, so that the structure of two end faces of the gas outlet diaphragm is close to or contacts with the gas outlet diaphragm, the gas outlet diaphragm is stable, the large deformation is reduced, the tightness is ensured, adhesion can be avoided, and the service life is prolonged.
(6) According to the vehicle double-diaphragm vacuum pump, the valve cover is provided with the reinforcing ribs, so that the strength of the valve cover can be increased; the mounting stability and the quick mounting are realized by forming the special-shaped sealing ring mounting groove; by extending the inclined planes on the air inlet block and the air outlet block, smooth transition of air flow is ensured.
(7) According to the double-diaphragm vacuum pump for the vehicle, the special-shaped sealing rings are integrally formed, so that the installation is convenient, and the installation error is avoided; further, by size distinction, rapid installation and separation are further achieved.
(8) According to the vehicle double-diaphragm vacuum pump, the two groups of end cover assemblies are symmetrically installed, the structure is attractive, the structure is compact, and the dislocation installation is reduced to be large.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments 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 may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic cross-sectional view of a dual diaphragm vacuum pump for a vehicle of the present invention;
FIG. 2 is a schematic diagram of a dual diaphragm vacuum pump for a vehicle according to the present invention;
FIG. 3 is a schematic diagram of a dual diaphragm vacuum pump for a vehicle according to the present invention;
FIG. 4 is a schematic diagram III of a dual diaphragm vacuum pump for a vehicle according to the present invention;
FIG. 5 is a schematic view of a crankcase of the present invention;
FIG. 6 is a second schematic structural view of the crankcase of the present invention;
FIG. 7 is a schematic view of a valve cover body according to the present invention;
FIG. 8 is a schematic structural view of a valve cover body according to the present invention;
FIG. 9 is a schematic view of the structure of the air intake baffle of the present invention;
FIG. 10 is a schematic view of the structure of the valve plate of the present invention;
FIG. 11 is a schematic diagram of a valve plate of the present invention;
FIG. 12 is a schematic view of a profiled seal ring of the present invention;
FIG. 13 is a schematic diagram II of the special-shaped seal ring of the present invention;
The reference numerals in the drawings are as follows: 1-a crankcase; 2-a sound deadening exhaust assembly; 3-a membrane; 4-a valve cover; 5-a valve plate; 6-special-shaped sealing rings; 7-a valve cover main body; 8-an air inlet baffle; 9-an air inlet groove and 10-an air outlet groove; 11-an air inlet inclined plane; 12-baffle through holes; 13-an air outlet inclined plane; 14-a mounting part; 15-arc structure; 16-a first valve plate air inlet; 17-a second valve plate air outlet; 18-concave inner surface; 19-an outer convex surface; 20-a special-shaped sealing ring supporting platform; 21-an air inlet through groove; 22-vent through grooves; 23-a second valve plate air inlet; 24-a first valve plate air outlet; 25-an air outlet pipeline; 26-an air inlet sealing ring; 27-an air outlet sealing ring; 28-an inner sealing ring; 29-an air intake diaphragm; 30-an air outlet membrane; 31-an air inlet groove clamping structure; 32-a support groove; 34-air inlet membrane empty slots; 35-a yielding groove; 36-reinforcing structure; 37-limiting blocks; 38-an air outlet membrane empty slot; 39-an air outlet membrane limiting structure; 40-a special-shaped sealing ring mounting groove; 41-an air inlet diaphragm limiting boss; 42-boss inclined planes; 43-reinforcing ribs; 44-a valve plate mounting hole; 45-valve cover mounting holes; 46-reinforcing rib mounting holes; 47-threaded mounting holes; 48-a first locating pin; 49-first locating pin holes; 50-a second locating pin; 51-second dowel holes; 52-outer side edges; 53-an air inlet block; 54-an air outlet block; 55-an air inlet pipeline; 56-an air inlet joint; 57-air inlet seal ring groove; 58-an air outlet seal ring groove; 59-a first cylindrical mounting hole; 60-second cylindrical mounting holes; 61-air inlet; 62-air outlet; 63-a process preformed hole; 64-motor; 65-deep groove bearings; 66-connecting rod; 67-eccentric shaft; 68-inlet passage inlet; 69-an air inlet joint mounting hole; 70-muffler mounting port; 71-muffler mounting holes; 72-diaphragm positioning annular groove; 73-a motor mounting port; 74-a motor seal groove; 75-motor mounting holes; 76-groove protrusions; 77-arc reinforcement.
Detailed Description
The following is a clear and complete description of the present invention, taken in conjunction with the accompanying drawings, and it is evident that the described embodiments are some, but not all, embodiments of the present invention. Other embodiments of the invention, which are encompassed by the present invention, are within the scope of the invention as would be within the skill of those of ordinary skill in the art without undue burden.
Example 1
As shown in fig. 1 to 13, the present embodiment discloses a double diaphragm vacuum pump for a vehicle, which comprises a crankcase 1, wherein a driving assembly, a noise elimination and exhaust assembly 2, a diaphragm 3 and two sets of end cover assemblies are installed on the crankcase 1.
The driving assembly comprises a motor 64, an eccentric shaft 67, a connecting rod 66 and a deep groove bearing 65, wherein the motor 64 is mounted on a motor mounting port 73 through a motor mounting hole 75 by using bolts, and is sealed in a motor sealing groove 74 by using a sealing ring; the output end of the motor 64 is connected with an eccentric shaft 67, the eccentric shaft 67 is provided with a deep groove bearing 65, a connecting rod 66 is arranged outside the deep groove bearing 65, one end of the connecting rod 66 is connected with a diaphragm 3, and the diaphragm 3 is arranged in a diaphragm positioning annular groove 72 of the crankcase 1; the muffler exhaust assembly 2 includes a muffler mounted in a muffler mounting port 70 through a muffler mounting hole 71. The above structure is a common structure type in the diaphragm vacuum pump, and is not specifically described herein.
The crankcase 1 is further provided with two groups of end cover assemblies, the two groups of end cover assemblies can be symmetrically installed and can be installed in a staggered mode, the two groups of end cover assemblies can be unchanged in any mode, but the structures of the two groups of end cover assemblies are symmetrically arranged, only the air inlet pipeline 55 and the air outlet pipeline 25 of the crankcase 1 are respectively arranged in a position-adjusting mode, the air inlet pipeline 55 is communicated with the air inlet 61, the structures of the two groups of end cover assemblies can be independently arranged, and the two groups of end cover assemblies can be integrally formed with the crankcase 1. In the present embodiment, for structural simplicity, it is preferable that the installation is symmetrical, and that the corresponding two intake pipes 55 share one intake joint 56, and that the intake joint 56 is installed on the intake passage inlet 68 through the intake joint installation hole 69.
Each end cap assembly comprises a valve cap 4, a valve plate 5 and a profiled sealing ring 6 arranged between the valve cap 4 and the valve plate 5; The valve cover 4 comprises a valve cover main body 7 and an air inlet baffle 8, the valve cover main body 7 is in a strip shape and comprises an air inlet groove 9 and an air outlet groove 10, the shape of the air inlet groove 9 is not particularly limited, a square structure is preferred, meanwhile, an air inlet inclined surface 11 is formed on one side wall of the air inlet groove 9, baffle through holes 12 are formed on the air inlet baffle 8, the shape and the number of the baffle through holes 12 are not particularly limited, in the embodiment, the baffle through holes 12 are two strip-shaped holes, the two holes are arranged in a splayed shape, and meanwhile, the two holes are communicated through the grooves, when the air inlet baffle 8 covers the air inlet groove 9, The air inlet inclined surface 11 and one side edge of the air inlet baffle 8 form a valve cover air inlet, further, an air inlet groove clamping structure 31 is arranged on one end surface of the air inlet baffle 8, when the air inlet baffle 8 is installed, the air inlet groove clamping structure 31 is matched with the inner wall of the air inlet groove 31, in particular points, the two can be clamped, the structure of the air inlet groove clamping structure 31 is not particularly limited, in the embodiment, the air inlet groove clamping structure 31 is of a U-shaped structure, in order to increase the strength, the bending part of the U-shaped structure can be thickened, in order to ensure that the air inlet baffle 8 is installed more firmly and the valve cover main body 7 is more matched, the periphery of the air inlet groove 9 forms a supporting groove 32, When the air inlet baffle 8 is installed, it is engaged with the supporting groove 9, preferably just embedded, in order to further fix the air inlet baffle 8, a groove protrusion 76 is formed on the side wall of the supporting groove 9, and the shape and structure of the groove protrusion are not particularly limited, and in this embodiment, the groove protrusion is a trapezoid structure; The structure of the air outlet groove 10 is not particularly limited, for example, a tetragonal structure, and further, the air outlet groove 10 is a groove with an inclined surface on the bottom, and an air outlet inclined surface 13 is formed on the air outlet groove 10; the inclination of the inlet inclined surface 11 and the outlet inclined surface 13 is not the only one, and is adjusted according to the whole of the valve cover main body 7, a single inclination inclined surface can be selected, and multi-stage inclined surfaces with multiple inclinations can be selected; The valve plate 15 comprises a mounting portion 14 fixedly mounted with the crankcase 1 and an arc-shaped structure 15 formed in the mounting portion 14, the mounting portion 14 mounts the valve plate 5 on the crankcase 1, the shape of the valve plate is not limited in particular, the valve plate is generally arranged according to the mounting end face of the crankcase 1, a first valve plate air inlet 16 and a second valve plate air outlet 17 are formed on the mounting portion 14, the arc-shaped structure 15 and the diaphragm 3 form a working cavity of the vacuum pump, the working cavity comprises an inner concave surface 18 and an outer convex surface 19, a special-shaped sealing ring supporting platform 20 is formed on the outer convex surface 19, and meanwhile, the working cavity is matched with the valve cover, The surface of the supporting platform is a plane, the shape of the supporting platform is matched with the shape of the valve cover, in order to increase the strength of the arc structure, the two ends of the part of the special-shaped sealing ring supporting platform 20, which is close to the middle, are outwards provided with arc reinforcing parts 77, an air inlet through groove 21 and an air outlet through groove 22 are also formed on the supporting platform, the first valve plate air inlet 16 is communicated with the air inlet through groove 21, the second valve plate air outlet 17 is communicated with the air outlet through groove 22, the valve plate 5 is also provided with a second valve plate air inlet 23 and a first valve plate air outlet 24, the first valve plate air inlet 16 is communicated with the air inlet 61 on the crankcase 1, the second valve plate air outlet 17 is communicated with an air outlet 62 on the crankcase 1, and the air outlet 62 is communicated with the inner cavity of the crankcase 1 through an air outlet pipeline 25; The special-shaped sealing ring 6 comprises an air inlet sealing ring 26 and an air outlet sealing ring 27, when the special-shaped sealing ring is installed, the air inlet sealing ring 26 is used for enclosing the air inlet through groove 21, the second valve plate air inlet 23, the baffle through hole 12, the air inlet groove 9 and the valve cover air inlet, and the air outlet sealing ring 27 is used for enclosing the air outlet through groove 22, the first valve plate air outlet 24, the air outlet groove 10 and the air outlet inclined plane 13; an inner sealing ring 28 is formed in the air inlet sealing ring 26, and when the air inlet sealing ring is installed, the inner sealing ring 28 is used for enclosing the baffle through hole 12 and the second valve plate air inlet 23, and the shape of the inner sealing ring 28 is not particularly limited, and is preferably quadrilateral; The inner sealing ring 28 is internally connected with an air inlet diaphragm 29, the air inlet diaphragm 29 is matched with the baffle through hole 12 to realize an air inlet process, the air outlet sealing ring 27 is internally connected with an air outlet diaphragm 30, and the air outlet diaphragm 30 is matched with the air outlet 24 of the first valve plate to realize an air outlet process.
Further, the other end surface of the air intake baffle 12 forms an air intake diaphragm limiting structure (not shown in the figure) which is matched with the air intake diaphragm hollow groove 34 between the air intake diaphragm 29 and the inner seal ring 28, preferably, the air intake diaphragm limiting structure is a semi-enclosed structure, in this embodiment, the air intake diaphragm limiting structure is a U-shaped structure, and at a specific point, the air intake diaphragm limiting structure is symmetrical to the air intake groove clamping structure; the shape of the intake diaphragm recess 34 is preferably a U-shaped configuration.
Further, the inner seal ring 28 and the air inlet seal ring 26 are semi-enclosed connection structure, and in this embodiment, are connected in a U-shape.
Further, a relief groove 35 is formed on the air outlet groove 10; a reinforcing structure 36 is formed on the air outlet membrane; during installation, the reinforcement structure 36 partially overlaps with the relief groove 35 to form a local relief, and the structures of the relief groove 35 and the reinforcement structure 36 are not particularly limited, in this embodiment, the relief groove 35 is a spherical arc groove, and the reinforcement structure 36 is a spherical arc protrusion.
Further, the air outlet membrane 30 is formed with a stopper 37, the stopper 37 is in contact with the air outlet groove 10, and the structure of the stopper 37 is not particularly limited, and is preferably disposed on a corner of the air outlet membrane 30, so as to form a curved protrusion with an angle.
Further, the air outlet membrane 30 is connected with the air outlet seal ring 27 at three places, then, an air outlet membrane hollow groove 38 is formed between the air outlet membrane 30 and the air outlet seal ring 27, an air outlet membrane limit structure 39 is formed on the valve cover 4, and when the air outlet membrane limit structure 39 is installed, the air outlet membrane limit structure 39 extends into the air outlet membrane hollow groove 38, wherein the air outlet membrane hollow groove 38 is formed between the air outlet membrane 30 and the air outlet seal ring 27, the shape is not limited, the shape of the air outlet membrane limit structure 39 is not limited, such as a column shape or a special shape, in this embodiment, the air outlet membrane limit structure 39 is a U-shaped structure, and two legs of the air outlet membrane limit structure extend into the air outlet membrane hollow groove 38.
Further, an air intake diaphragm limiting boss 41 is formed at the air inlet 23 of the second valve plate, so as to limit the air intake diaphragm 29, and the inner sealing ring 28 encloses the air intake diaphragm limiting boss 41; the structural shape of the air intake diaphragm limiting boss 41 is not particularly limited, in this embodiment, a cylinder is preferred, further, the air intake diaphragm limiting boss 41 forms a boss inclined plane 42, and further, the air intake diaphragm limiting boss 41 forms an inner groove to avoid covering the second valve plate air inlet 23.
Further, the air inlet sealing ring 26 and the air outlet sealing ring 27 are integrally formed; further, the shape of the air inlet seal ring 26 is larger than that of the air outlet seal ring 27.
Further, the first valve plate air outlet 24 is an annular boss air outlet.
Further, a special-shaped seal ring mounting groove 40 is formed on the valve cover 4; further, the side edges of the special-shaped seal ring mounting groove 40 include an outer side edge 52, an air inlet block 53 and an air outlet block 54, wherein the outer side edge 52, the air inlet block 53 and the air inlet through groove 21 are formed on the valve cover main body 7, the air outlet block 54 and the air outlet through groove 22 are matched, the air inlet inclined surface 11 extends to the air inlet block 53, and the air outlet inclined surface 13 extends to the air outlet block 54.
Further, reinforcing ribs 43 are formed on both sides of the valve cover main body 7, respectively, and free ends of the reinforcing ribs 43 are mounted on the valve plate 5 or the crankcase 1. The shape of the reinforcing rib 43 is not particularly limited, and in this embodiment, is a slightly deformed U-shaped structure, and both free ends thereof are connected to the valve cover main body 7.
Further, the valve plate 5 is provided with a valve plate mounting hole 44 on the mounting portion 14, the valve cover main plate 7 is provided with a valve cover mounting hole 45, the reinforcing rib 43 is provided with a reinforcing rib mounting hole 46, the crankcase 1 is provided with a screw mounting hole 47, the valve cover mounting hole 44 and the reinforcing rib mounting hole 46 are matched with the valve plate mounting hole 45, and the valve cover 4 and the valve plate 5 are mounted on the crankcase 1 by bolts.
Further, a first positioning pin structure is formed between the valve cover 4 and the valve plate 5; a second locating pin structure is formed between the valve plate 5 and the crankcase 1, the first locating pin structure includes a first locating pin 48 disposed on the valve cover 4 and a first locating pin hole 49 on the valve plate 5, and the second locating pin structure includes a second locating pin hole 51 disposed on the valve plate 5 and a second locating pin 50 on the crankcase 1, where the locating pin and the locating pin hole may be interchanged or used in a mixed manner.
Further, the air inlet 61 and the air outlet 62 of the crankcase 1 are respectively formed with an air inlet seal ring groove 57 and an air outlet seal ring groove 58, and when the crankcase is mounted, an air inlet seal ring and an air outlet seal ring are mounted in the grooves.
Further, the crankcase 1 is further provided with a first cylindrical mounting hole 59, a second cylindrical mounting hole 60 and a process preformed hole 63.
Further, the valve cover and the valve plate are arranged by shrinking the two ends of the special-shaped sealing ring supporting platform and the special-shaped sealing ring.
The application process of the invention is as follows:
The vacuum pump adopts a horizontal reciprocating motion structure, the motor 64 is directly connected with the eccentric shaft 67 and drives the eccentric shaft to rotate, the connecting rod 66 and the diaphragm 3 are driven by the deep groove bearing 65 to do periodic reciprocating motion, the volume of gas in the working cavity between the diaphragm 3 and the valve plate 5 is periodically changed together, in one period, when the working cavity is negative pressure, the gas in the gas inlet joint 56 passes through the gas inlet 61, the first valve plate gas inlet 16, the gas inlet through groove 21, the gas inlet inclined plane 11 and the baffle through hole 12 along the gas inlet pipeline 55, under the impact of gas flow, the gas inlet diaphragm 29 is opened, then enters the working cavity through the second valve plate gas inlet 23, and the gas outlet diaphragm 30 seals the first valve plate gas outlet 24; when negative pressure is converted into positive pressure in the working cavity, the air outlet diaphragm 29 seals the baffle through hole 12 under pressure, the air outlet diaphragm is opened at the moment, and air flows through the first valve plate air outlet 24, the air outlet inclined plane 13, the air outlet through groove 22, the second valve plate air outlet 17, the air outlet 62 and the air outlet pipeline 25, enters the inner cavity of the crankcase 1, and finally is subjected to noise elimination and discharge through the noise elimination and exhaust assembly 2. In short, the eccentric shaft 67 rotates once, the diaphragm connecting rods at two sides reciprocate once, one working cavity realizes the processes of air suction, compression, air exhaust and air suction, and the other working cavity relatively realizes the processes of air exhaust, air suction, compression and air exhaust, so that one cycle is completed.
It is apparent that the above examples are given by way of illustration only and are not limiting of the embodiments. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. While still being apparent from variations or modifications that may be made by those skilled in the art are within the scope of the invention.
Claims (3)
1. The double-diaphragm vacuum pump for the vehicle is characterized by comprising a crankcase, wherein a driving assembly, a silencing exhaust assembly, a diaphragm and two groups of end cover assemblies are arranged on the crankcase; each end cap assembly comprises a valve cap, a valve plate and a special-shaped sealing ring arranged between the valve cap and the valve plate; the valve cover comprises a valve cover main body and an air inlet baffle, wherein the valve cover main body comprises an air inlet groove and an air outlet groove, an air inlet inclined plane is formed at one side wall of the air inlet groove, a baffle through hole is formed in the air inlet baffle, when the air inlet baffle is covered on the air inlet groove, a valve cover air inlet is formed on the air inlet inclined plane and the side edge of the air inlet baffle, and an air outlet inclined plane is formed on one side of the side wall of the air outlet groove; the valve plate comprises a mounting part fixedly mounted with the crankcase and an arc-shaped structure formed in the mounting part, wherein a first valve plate air inlet and a second valve plate air outlet are formed in the mounting part, the arc-shaped structure comprises an inner concave surface and an outer convex surface, a special-shaped sealing ring supporting platform is formed on the outer convex surface, an air inlet through groove and an air outlet through groove are formed in the special-shaped sealing ring supporting platform, the first valve plate air inlet is communicated with the air inlet through groove, the second valve plate air outlet is communicated with the air outlet through groove, and a second valve plate air inlet and a first valve plate air outlet are also formed in the valve plate; the air inlet of the first valve plate is communicated with the air inlet of the crankcase, the air outlet of the second valve plate is communicated with the air outlet of the crankcase, and the air outlet is communicated with the inner cavity of the crankcase through an air outlet pipeline; the special-shaped sealing ring comprises an air inlet sealing ring and an air outlet sealing ring, an inner sealing ring is formed in the air inlet sealing ring, an air inlet diaphragm is connected in the inner sealing ring, and an air outlet diaphragm is connected in the air outlet sealing ring; the driving assembly comprises a motor, an eccentric shaft, a connecting rod and a deep groove bearing;
An air inlet groove clamping structure is arranged on one end face of the air inlet baffle, and is matched with the inner wall of the air inlet groove when in installation; the side wall of the supporting groove forms a groove bulge;
The air inlet diaphragm limiting structure is matched with an air inlet diaphragm empty slot between the air inlet diaphragm and the inner sealing ring, and is of a semi-surrounding type structure;
A U-shaped connecting structure is arranged between the inner sealing ring and the air inlet sealing ring;
The air outlet groove is an inclined groove; a relief groove is formed on the air outlet groove; a reinforcing structure is formed on the air outlet membrane; during installation, a limit block is formed on the air outlet diaphragm, which is overlapped with the yielding groove part, and the limit block is connected with the air outlet sealing ring at three positions, namely, the air outlet diaphragm is abutted against the air outlet groove, an air outlet diaphragm empty groove is formed between the air outlet diaphragm and the air outlet sealing ring, an air outlet diaphragm limit structure is formed on the valve cover main body, and during installation, the air outlet diaphragm limit structure stretches into the air outlet diaphragm empty groove;
The valve cover comprises a valve cover main body, a valve cover and a valve cover, wherein a special-shaped sealing ring mounting groove is formed in the valve cover main body, an air inlet diaphragm limiting boss is formed at an air inlet of the second valve plate and used for limiting the air inlet diaphragm, and the air inlet diaphragm limiting boss is surrounded by an inner sealing ring;
A valve plate mounting hole is formed in the mounting part of the valve plate, a valve cover mounting hole is formed in the valve cover main plate, a reinforcing rib mounting hole is formed in the reinforcing rib, a threaded mounting hole is formed in the crankcase, the valve cover mounting hole and the reinforcing rib mounting hole are matched with the valve plate mounting hole, and the valve cover and the valve plate are mounted on the crankcase through bolts;
A first locating pin structure is formed between the valve cover and the valve plate; the side edge of the special-shaped sealing ring mounting groove comprises an outer side edge formed on the valve cover main body, an air inlet block and an air outlet block, the air inlet block is matched with the air inlet through groove, the air outlet block is matched with the air outlet through groove, the air inlet inclined surface extends to the air inlet block, and the air outlet inclined surface extends to the air outlet block.
2. The double diaphragm vacuum pump for a vehicle according to claim 1, wherein the air inlet seal ring and the air outlet seal ring are integrally formed, and the air inlet seal ring and the air outlet seal ring are large and small in appearance.
3. The double-diaphragm vacuum pump for the vehicle according to claim 2, wherein the air inlet of the crankcase is connected with the air inlet joint through the air inlet pipeline, an air inlet sealing ring groove and an air outlet sealing ring groove are respectively formed in the air inlet and the air outlet of the crankcase, an air inlet sealing ring and an air outlet sealing ring are arranged in the grooves during installation, two groups of end cover assemblies are symmetrically arranged, and a first columnar mounting hole, a second columnar mounting hole and a process reserved hole are further formed in the crankcase.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010265558.8A CN111306046B (en) | 2020-04-07 | 2020-04-07 | Double-diaphragm vacuum pump for vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010265558.8A CN111306046B (en) | 2020-04-07 | 2020-04-07 | Double-diaphragm vacuum pump for vehicle |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111306046A CN111306046A (en) | 2020-06-19 |
| CN111306046B true CN111306046B (en) | 2024-08-13 |
Family
ID=71153936
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010265558.8A Active CN111306046B (en) | 2020-04-07 | 2020-04-07 | Double-diaphragm vacuum pump for vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111306046B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539165A (en) * | 2020-12-09 | 2021-03-23 | 百事德机械（江苏）有限公司 | Connecting rod type fan |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212803537U (en) * | 2020-04-07 | 2021-03-26 | 温州瑞立汽车科技有限公司 | Double-diaphragm vacuum pump for vehicle |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102007005223A1 (en) * | 2006-02-10 | 2007-09-13 | Continental Teves Ag & Co. Ohg | Motor-pump unit |
| CN101100989B (en) * | 2007-07-30 | 2010-11-03 | 常州富林中电工贸有限公司 | Diaphragm pump |
| DE102009054502A1 (en) * | 2008-12-19 | 2010-06-24 | Continental Teves Ag & Co. Ohg | Motor-pump unit |
| CN202417894U (en) * | 2011-12-28 | 2012-09-05 | 天津市领航实验设备有限公司 | Diaphragm vacuum pump |
| KR102061371B1 (en) * | 2012-02-01 | 2019-12-31 | 콘티넨탈 테베스 아게 운트 코. 오하게 | Pump unit driven by an electric motor |
| CN207033698U (en) * | 2017-05-31 | 2018-02-23 | 瑞立集团有限公司 | A kind of Vehicular electric diaphragm vavuum pump |
| CN207033678U (en) * | 2017-05-31 | 2018-02-23 | 瑞立集团有限公司 | A kind of special-shaped seal ring for Vehicular electric diaphragm vavuum pump |
| CN206801828U (en) * | 2017-05-31 | 2017-12-26 | 瑞立集团有限公司 | A kind of valve plate for Vehicular electric diaphragm vavuum pump |
| CN207033689U (en) * | 2017-05-31 | 2018-02-23 | 瑞立集团有限公司 | A kind of bonnet for Vehicular electric diaphragm vavuum pump |
| CN207261223U (en) * | 2017-08-09 | 2018-04-20 | 瑞立集团有限公司 | A kind of four cylinder diaphragm vacuum pump of vehicle mounted electric |
| CN210033779U (en) * | 2019-05-25 | 2020-02-07 | 上海侠飞泵业有限公司 | Double diaphragm pump |
-
2020
- 2020-04-07 CN CN202010265558.8A patent/CN111306046B/en active Active
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212803537U (en) * | 2020-04-07 | 2021-03-26 | 温州瑞立汽车科技有限公司 | Double-diaphragm vacuum pump for vehicle |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111306046A (en) | 2020-06-19 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4755374B2 (en) | Diaphragm vacuum pump | |
| AU2010202892B2 (en) | Rotary compressor | |
| US5577901A (en) | Compressor with valve unit for controlling suction and discharge of fluid | |
| CN111306046B (en) | Double-diaphragm vacuum pump for vehicle | |
| JPH1026080A (en) | Muffler structure for compressor | |
| CN104121160A (en) | Electric vacuum pump with two swinging spherical pistons | |
| CN210715029U (en) | Diaphragm pump with high sealing performance | |
| CN212803537U (en) | Double-diaphragm vacuum pump for vehicle | |
| CN210106128U (en) | Diaphragm pump | |
| JPS61132783A (en) | Frame assembly of enclosed compressor | |
| CN212272512U (en) | Valve plate for vehicle double-diaphragm vacuum pump | |
| CN212028013U (en) | Special-shaped sealing ring for automobile double-diaphragm vacuum pump | |
| CN212028026U (en) | Valve cover for automobile-used double-diaphragm vacuum pump | |
| CN211314515U (en) | Electronic diaphragm vacuum pump for single-crank vehicle | |
| KR20180124521A (en) | Muffler for Hermetic Compressor | |
| CN213953867U (en) | Single-cylinder electric diaphragm vacuum pump | |
| CN221096837U (en) | Air pump | |
| KR100788423B1 (en) | Suction Muffler and Compressor Having the Same | |
| CN220378480U (en) | Double-cylinder pump body structure and compressor | |
| JP3489339B2 (en) | Muffler structure of compressor | |
| CN220168133U (en) | Water pump | |
| CN220622177U (en) | Pump body structure of compressor and compressor | |
| CN220646148U (en) | Miniature four-cavity diaphragm pump | |
| CN217327626U (en) | Multi-cavity diaphragm air pump | |
| CN221525105U (en) | Double-acting static vortex plate structure for vortex compressor |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20201202 Address after: 325000 No.456 Binhai 4th Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Applicant after: Wenzhou Ruili Automobile Technology Co.,Ltd. Address before: No. 2666, Development Zone Avenue, Ruian Economic Development Zone, Wenzhou City, Zhejiang Province Applicant before: Ruili Group Ruian Auto Parts Co.,Ltd. |
|
| TA01 | Transfer of patent application right | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20240716 Address after: No. 456, Binhai 4th Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Applicant after: WENZHOU RUILI KORMEE AUTOMOTIVE ELECTRONICS CO.,LTD. Country or region after: China Address before: No. 456, Binhai 4th Road, Wenzhou Economic and Technological Development Zone, Wenzhou City, Zhejiang Province Applicant before: Wenzhou Ruili Automobile Technology Co.,Ltd. Country or region before: China |
|
| TA01 | Transfer of patent application right | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |