CN219974761U - Cylinder cover sealing structure of plunger pump - Google Patents
Cylinder cover sealing structure of plunger pump Download PDFInfo
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- CN219974761U CN219974761U CN202320338033.1U CN202320338033U CN219974761U CN 219974761 U CN219974761 U CN 219974761U CN 202320338033 U CN202320338033 U CN 202320338033U CN 219974761 U CN219974761 U CN 219974761U
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- pressing plate
- cylinder body
- cylinder cover
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- 238000007789 sealing Methods 0.000 title claims abstract description 130
- 239000007788 liquid Substances 0.000 claims abstract description 52
- 238000003825 pressing Methods 0.000 claims abstract description 42
- 238000000034 method Methods 0.000 claims abstract description 5
- 230000001629 suppression Effects 0.000 claims 1
- 239000003599 detergent Substances 0.000 description 4
- 238000005406 washing Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000000452 restraining effect Effects 0.000 description 1
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- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model relates to a cylinder cover sealing structure of a plunger pump, which comprises a cylinder body, a sealing pressing plate and a cylinder cover, wherein two piston cavities are arranged in the cylinder body, a liquid inlet channel and a liquid outlet channel are arranged on the cylinder cover, a liquid inlet and a liquid outlet are arranged on the sealing pressing plate, a liquid inlet one-way valve is arranged at the liquid inlet, and a liquid outlet one-way valve is arranged at the liquid outlet; the method is characterized in that: the sealing surface of the cylinder body is provided with a large caulking groove in a shape of 8, a large sealing ring in a shape of 8 is embedded in the large caulking groove, and the thickness of the large sealing ring is larger than the depth of the large caulking groove and is pressed by a sealing pressing plate; the sealing pressing plate is characterized in that two 8-shaped small caulking grooves are formed in the end faces, opposite to the cylinder cover, of the sealing pressing plate, and small sealing rings which are 8-shaped are embedded in the small caulking grooves, and the thickness of each small sealing ring is larger than the depth of each small caulking groove and is pressed by the sealing surface of the cylinder cover. The sealing structure can assemble the cylinder body, the sealing pressing plate and the cylinder cover together from top to bottom.
Description
Technical Field
The utility model relates to a plunger pump for extracting detergents such as laundry detergent and softener on a washing machine, in particular to a cylinder cover sealing structure of the plunger pump.
Background
Most of the existing high-end washing machines adopt plunger pumps to pump detergents such as laundry detergent, softener and the like. Such as "a double-cavity plunger pump" of chinese utility model patent No. ZL201320419147.5 (bulletin No. CN 203373569U), chinese utility model patent No. ZL201620046953.6 (bulletin No. CN 205478230U) "a double-cavity bellows structure plunger pump of washing machine", chinese utility model patent No. ZL202022629401.7 (bulletin No. CN 213808570U) "a one-way gear clutch driving mechanism pump and washing machine", which all disclose such pump structure.
The clutch driving mechanism is characterized by comprising a pump body and a clutch driving mechanism, wherein two separated pump cavities are arranged in the pump body, and a liquid inlet and a liquid outlet are arranged on the pump body corresponding to each pump cavity; a piston assembly is arranged in each pump cavity, and a liquid inlet check valve which only allows liquid to enter the pump cavity from the outside is arranged at each liquid inlet; each liquid outlet is provided with a liquid outlet one-way valve which only allows liquid to flow out of the pump cavity. The pump body 4 includes pump main part, valve mounting panel and pump top cap, and the valve mounting panel is located between pump main part and the pump top cap, and inlet and liquid outlet have all been seted up to every pump chamber of valve mounting panel correspondence. The pump main body comprises a connecting cover part and two pump column parts which are arranged side by side, each pump column part is communicated with a pump cavity, the pump top cover is connected with the connecting cover part in a buckled mode, and the liquid inlet channel and the liquid outlet channel are arranged on the pump top cover.
In order to avoid the mutual series flow of the liquid of two pump chambers to make two pump chambers independent each other, be equipped with a first sealing washer of 8 font between valve mounting panel and the pump main part, be equipped with two second sealing washer of 8 font between valve mounting panel and the pump top cap, first sealing washer inlays and establishes on the terminal surface of pump main part, two second sealing washer then inlay and establish on the terminal surface of pump top cap, this just needs to set up the caulking groove of 8 font on pump main part and pump top cap, and pump main part and pump top cap own structure just are more complicated, if there is the processing of caulking groove again, the complexity of more increase mould also increases mould manufacturing cost. Importantly, the first sealing ring and the second sealing ring are positioned on two opposite surfaces, when the pump top cover is assembled, only the lateral assembly can be carried out, and if the pump top cover is assembled vertically, the second sealing ring is easy to fall off, so that the assembly is inconvenient.
In summary, the cylinder head (pump top cover) sealing structure of the existing plunger pump can be further improved.
Disclosure of Invention
The utility model aims to solve the technical problem of providing a cylinder cover sealing structure of a plunger pump, which is beneficial to assembly, reasonable in structure and good in sealing effect.
The technical scheme adopted for solving the technical problems is as follows: the cylinder cover sealing structure of the plunger pump comprises a cylinder body, a sealing pressing plate and a cylinder cover, wherein two mutually independent piston cavities are arranged in the cylinder body, a liquid inlet channel and a liquid outlet channel which are mutually independent are arranged on the cylinder cover corresponding to each piston cavity, the cylinder cover is fixed on the cylinder body, the sealing pressing plate is pressed between the cylinder body and the cylinder cover, a liquid inlet and a liquid outlet are arranged on the sealing pressing plate corresponding to each piston cavity, a liquid inlet one-way valve which only allows liquid to enter the piston cavity from the liquid inlet channel is arranged at the liquid inlet, and a liquid outlet one-way valve which only allows liquid to flow out from the piston cavity to the liquid outlet channel is arranged at the liquid outlet; the method is characterized in that: the sealing surface of the cylinder body is provided with a large caulking groove in a shape of 8, a large sealing ring in a shape of 8 is embedded in the large caulking groove, two annular parts of the large sealing ring are arranged around the mouth end of the piston cavity, and the thickness of the large sealing ring is larger than the depth of the large caulking groove and is pressed by the sealing pressing plate; the sealing pressing plate is characterized in that two small caulking grooves which are 8-shaped are formed in the end faces, opposite to the cylinder cover, of the sealing pressing plate, small sealing rings which are 8-shaped are embedded in the small caulking grooves, two annular parts of the small sealing rings are respectively arranged around the liquid inlet and the liquid outlet, and the thickness of the small sealing rings is larger than the depth of the small caulking grooves and is pressed by the sealing surface of the cylinder cover.
Further improved, the sealing pressing plate and the cylinder cover are provided with 2 annular outer flange parts on opposite end surfaces, each outer flange part is internally provided with 2 circular inner flange parts which are arranged at intervals, one small caulking groove is formed between each two inner flange parts and each outer flange part, the sealing surface of the cylinder cover is provided with two inner concave parts with the shapes matched with the outer flange parts, and each inner concave part is embedded with one outer flange part to restrain the outer flange parts. The inner flange part and the outer flange part form a small caulking groove, the inner flange part and the outer flange part protrude out of the end face of the sealing pressing plate and are combined with the inner concave part on the sealing surface of the cylinder cover, the inner flange part has a restraining function on the outer flange part, the assembly is facilitated, and the raised ribs are adopted to form the small caulking groove, so that the consumable of the sealing pressing plate can be reduced, and the cost is reduced.
Still further improve, above-mentioned sealing pressure plate is rectangle platy, is provided with the assembly at the middle part of the long limit of a rectangle of sealing pressure plate and prevents slow-witted breach, the corresponding side of cylinder cap and cylinder body all is equipped with matches the breach, during the assembly prevent slow-witted breach with match the breach and be located the homonymy. Only when the assembly fool-proof notch and the matching notch on the cylinder cover and the cylinder body are simultaneously positioned on the same side, the sealing pressing plate is not reversely installed, and the fool-proof design can rapidly guide us to correctly assemble, prevent the occurrence of assembly errors and improve the installation efficiency.
Preferably, the four corners of the sealing platen are rounded. Thus, the four corners of the cylinder cover and the cylinder body can be rounded.
Still further improve, above-mentioned sealing clamp plate's two terminal surfaces four corner positions department locating column respectively, on the sealed face of cylinder body, on the sealed face of cylinder cap all be equipped with four co-location post plug-in's locating hole. The positioning columns on the two end surfaces of the sealing pressing plate can pre-position the sealing pressing plate on the cylinder body, and finally, the cylinder cover is assembled, the positioning columns and the cylinder cover are positioned, and the relative position positioning reliability of all parts is ensured. In the assembly process, the sealing pressing plate cannot shift relative to the cylinder body, so that the assembly of the cylinder cover is facilitated, and the assembly process is simpler.
Preferably, the cylinder head is fastened to the cylinder block. Of course, the cylinder cover can also be fixed on the cylinder body by adopting screws.
Compared with the prior art, the utility model has the advantages that: the sealing structure can assemble the cylinder body, the sealing pressing plate and the cylinder cover together from top to bottom, when the sealing structure is assembled, the cylinder body is firstly inverted on a tool, then the large sealing ring is arranged in the large caulking groove on the sealing surface of the cylinder body, meanwhile, each one-way valve is preassembled on the sealing pressing plate, then the sealing pressing plate is placed on the sealing surface of the cylinder body, at the moment, the small caulking groove faces upwards, then the two small sealing rings are placed in the small caulking groove, finally, the cylinder cover is connected onto the cylinder body, the cylinder cover connected onto the cylinder body tightly presses the sealing pressing plate between the cylinder body and the cylinder cover, the large sealing ring and the small sealing ring are tightly pressed, the sealing effect is good, and the assembly is convenient.
Drawings
FIG. 1 is a schematic perspective view of an embodiment of the present utility model;
FIG. 2 is an exploded perspective view of one embodiment of the present utility model;
FIG. 3 is a second perspective exploded view of an embodiment of the present utility model;
FIG. 4 is a perspective view of a sealing platen in an embodiment of the present utility model;
FIG. 5 is a cross-sectional view along the length of an embodiment of the present utility model;
fig. 6 is a cross-sectional view along the width direction of an embodiment of the present utility model.
Detailed Description
The utility model is described in further detail below with reference to the embodiments of the drawings.
As shown in fig. 1-6, is a preferred embodiment of the present utility model.
The utility model provides a cylinder cap seal structure of plunger pump, includes cylinder body 1, sealing clamp plate 2 and cylinder cap 3, has two independent piston chamber 4 each other in the cylinder body 1, is equipped with piston 10 in the piston chamber 4, corresponds every piston chamber 4 on the cylinder cap 3 and all is equipped with independent feed liquor passageway 3a and liquid outlet channel 3b each other, and cylinder cap 3 is fixed on cylinder body 1, sealing clamp plate 2 suppresses between cylinder body 1 and cylinder cap 3, and sealing clamp plate 2 is last to every piston chamber 4 all to be equipped with inlet 2a and liquid outlet 2b, and inlet 2a department is equipped with only to allow liquid from feed liquor channel 3a to get into the feed liquor check valve 5a of piston chamber 4, and liquid outlet department is equipped with only to allow liquid from piston chamber 4 to flow out to liquid outlet check valve 5b of liquid outlet channel 3 b. The above structure is referred to the background patent.
The sealing surface of the cylinder body 1 is provided with a large caulking groove 6a which is 8-shaped, a large sealing ring 7a which is 8-shaped is embedded in the large caulking groove 6a, two annular parts of the large sealing ring 7a are arranged around the opening end of the piston cavity 4, and the thickness of the large sealing ring 7a is larger than the depth of the large caulking groove 6a and is pressed by the sealing pressing plate 2; the sealing pressing plate 2 is provided with two 8-shaped small caulking grooves 6b on the end face opposite to the cylinder cover 3, the 8-shaped small sealing rings 7b are embedded in the small caulking grooves 6b, two annular parts of the small sealing rings 7b are respectively arranged around the liquid inlet 2a and the liquid outlet 2b, and the thickness of the small sealing rings 7b is greater than the depth of the small caulking grooves 6b and is pressed by the sealing surface of the cylinder cover 3.
The end face of the sealing pressing plate 2, which is opposite to the cylinder cover 3, is provided with 2 annular outer flange parts 21, each outer flange part 21 is internally provided with 2 circular inner flange parts 22 which are arranged at intervals, one small caulking groove 6b is formed between the two inner flange parts and the outer flange parts 21, the sealing surface of the cylinder cover 3 is provided with two inner concave parts 31 with the shapes matched with the outer flange parts 21, and each inner concave part 31 is internally embedded with one outer flange part 21 so as to realize restraint on the outer flange parts 21.
The sealing pressing plate 2 is rectangular flat plate-shaped, and four corners of the sealing pressing plate 2 are rounded. The middle part of a rectangular long side of the sealing pressing plate 2 is provided with an assembly fool-proof notch 8a, the corresponding side edges of the cylinder cover 3 and the cylinder body 1 are respectively provided with a matching notch 8b, and the assembly fool-proof notch 8a and the matching notch 8b are positioned on the same side during assembly.
Four corner positions of the two end faces of the sealing pressing plate 2 are respectively provided with positioning posts 9a, and four positioning holes 9b for inserting the co-positioning posts 9a are respectively formed in the sealing surface of the cylinder body 1 and the sealing surface of the cylinder cover 3.
The cylinder cover 3 is fastened and fixed on the cylinder body 1.
The sealing structure can assemble the cylinder body 1, the sealing pressing plate 2 and the cylinder cover 3 together from top to bottom, when in assembly, the cylinder body 1 is firstly inverted on a tool, then the large sealing ring 7a is arranged in the large caulking groove 6a on the sealing surface of the cylinder body 1, meanwhile, each liquid inlet one-way valve 5a and each liquid outlet one-way valve 5b are assembled on the sealing pressing plate 2 in advance, then the sealing pressing plate 2 is placed on the sealing surface of the cylinder body 1, at the moment, four positioning posts 9a on one end surface of the sealing pressing plate 2 are inserted into the positioning holes 9b on the sealing surface of the cylinder body 1, the small caulking groove 6b faces upwards, then the two small sealing rings 7b are arranged in the small caulking groove 6b, finally, the cylinder cover 3 is connected to the cylinder body 1, the cylinder cover 3 connected to the cylinder body 1 tightly presses the sealing pressing plate 2 between the cylinder body 1 and the cylinder cover 3, the large sealing ring 7a and the small sealing ring 7b are tightly pressed, the sealing effect is good, and the assembly is convenient.
It should be noted that, in the description of the present embodiment, the directions or positional relationships indicated by the terms "front, rear", "left, right", "inner, outer", "upper, lower", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the apparatus or element to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "mounted," "connected," "coupled," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.
Claims (6)
1. The utility model provides a cylinder cap seal structure of plunger pump, includes cylinder body (1), sealing clamp plate (2) and cylinder cap (3), have two independent piston chamber (4) each other in cylinder body (1), correspond every piston chamber (4) on cylinder cap (3) and all be equipped with independent feed liquor passageway (3 a) and play liquid channel (3 b) each other, cylinder cap (3) are fixed on cylinder body (1), sealing clamp plate (2) suppression is between cylinder body (1) and cylinder cap (3), sealing clamp plate (2) are last to every piston chamber (4) all to be equipped with inlet (2 a) and outlet (2 b), inlet (2 a) department is equipped with only allow liquid from feed liquor passageway (3 a) entering piston chamber (4) feed liquor check valve (5 a), outlet department is equipped with only allow liquid from piston chamber (4) to go out to play liquid check valve (5 b) of liquid passageway (3 b); the method is characterized in that: the sealing surface of the cylinder body (1) is provided with a large caulking groove (6 a) in a shape of 8, a large sealing ring (7 a) in a shape of 8 is embedded in the large caulking groove (6 a), two annular parts of the large sealing ring (7 a) are arranged around the mouth end of the piston cavity (4), and the thickness of the large sealing ring (7 a) is larger than the depth of the large caulking groove (6 a) and is pressed by the sealing pressing plate (2); two small caulking grooves (6 b) which are 8-shaped are formed in the end faces, opposite to the cylinder cover (3), of the sealing pressing plate (2), small sealing rings (7 b) which are 8-shaped are embedded in the small caulking grooves (6 b), two annular portions of the small sealing rings (7 b) are respectively arranged around the liquid inlet (2 a) and the liquid outlet (2 b), and the thickness of the small sealing rings (7 b) is larger than the depth of the small caulking grooves (6 b) and is pressed by the sealing surface of the cylinder cover (3).
2. The cylinder head sealing structure of a plunger pump according to claim 1, characterized in that: the sealing pressing plate (2) is provided with 2 annular outer flange parts (21) on the end faces opposite to the cylinder cover (3), 2 circular inner flange parts (22) which are arranged at intervals are arranged in each outer flange part (21), a small caulking groove (6 b) is formed between each two inner flange parts and each outer flange part (21), the sealing surface of the cylinder cover (3) is provided with two concave parts (31) with the shapes matched with the outer flange parts (21), and each concave part (31) is internally embedded with one outer flange part (21) so as to restrain the outer flange parts (21).
3. The cylinder head sealing structure of a plunger pump according to claim 1 or 2, characterized in that: the sealing pressing plate (2) is rectangular and flat plate-shaped, an assembly fool-proof notch (8 a) is formed in the middle of one rectangular long side of the sealing pressing plate (2), matching notches (8 b) are formed in corresponding sides of the cylinder cover (3) and the cylinder body (1), and the assembly fool-proof notch (8 a) and the matching notches (8 b) are located on the same side during assembly.
4. A cylinder head sealing structure of a plunger pump according to claim 3, characterized in that: and four corners of the sealing pressing plate (2) are rounded.
5. A cylinder head sealing structure of a plunger pump according to claim 3, characterized in that: four corner positions of two end faces of the sealing pressing plate (2) are respectively provided with positioning columns (9 a), and four positioning holes (9 b) for inserting the co-positioning columns (9 a) are respectively formed in the sealing surface of the cylinder body (1) and the sealing surface of the cylinder cover (3).
6. The cylinder head sealing structure of a plunger pump according to claim 1 or 2, characterized in that: the cylinder cover (3) is buckled and fixed on the cylinder body (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320338033.1U CN219974761U (en) | 2023-02-15 | 2023-02-15 | Cylinder cover sealing structure of plunger pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202320338033.1U CN219974761U (en) | 2023-02-15 | 2023-02-15 | Cylinder cover sealing structure of plunger pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219974761U true CN219974761U (en) | 2023-11-07 |
Family
ID=88581188
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202320338033.1U Active CN219974761U (en) | 2023-02-15 | 2023-02-15 | Cylinder cover sealing structure of plunger pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219974761U (en) |
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2023
- 2023-02-15 CN CN202320338033.1U patent/CN219974761U/en active Active
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