CN204083425U - Unloading valve upper cover - Google Patents
Unloading valve upper cover Download PDFInfo
- Publication number
- CN204083425U CN204083425U CN201420433791.2U CN201420433791U CN204083425U CN 204083425 U CN204083425 U CN 204083425U CN 201420433791 U CN201420433791 U CN 201420433791U CN 204083425 U CN204083425 U CN 204083425U
- Authority
- CN
- China
- Prior art keywords
- flange plate
- cylinder
- center hole
- unloading valve
- arc locating
- 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.)
- Expired - Fee Related
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Abstract
The utility model belongs to valve technology field, particularly relates to a kind of unloading valve upper cover.It solve prior art and use the technical problems such as joint structural strength is low.Comprise and axially there is the cylinder of installing passage and the flange plate being connected to cylinder one end, flange plate is provided with some attachment holes, flange plate is also provided with some arc locating notches be positioned at away from cylinder one end, closing in portion is provided with away from one end of flange plate in cylinder, be provided with and the center hole installing channel connection in closing in portion axial centre, the aperture of center hole is less than the internal diameter of installation passage and forms circular orientation face between center hole and installation passage, circular orientation face is provided with the first strip bulge of some even circumferentials distribution, the one end being provided with arc locating notch at flange plate is provided with the second strip bulge that some even circumferentials are distributed in center hole periphery.The utility model advantage is: the high and circumference of join strength is not easily rotated.
Description
Technical field
The utility model belongs to valve technology field, particularly relates to a kind of unloading valve upper cover.
Background technique
Unloading valve is under certain condition, can make the valve of oil hydraulic pump off-load.Unloading valve comprises unloading valve main body and the lower body part be connected in unloading valve main body and upper cover, balance adjusting structure is provided with in upper cover, balance adjusting structure comprises adjusting nut, spring, adjustable lever and spring seat etc. parts, rotate to prevent circumference between unloading valve upper cover and adjusting nut, between upper cover and unloading valve main body, circumference is rotated and improves installation efficiency, for this reason, people have carried out long-term exploration, propose solution miscellaneous.
Such as, Chinese patent literature discloses a kind of safety unloading valve, [application number: 92218096.2], the program is when its superpressure, pressure liquid can push the overflow of off-load cone valve automatically open, and the effect of labyrinth piston can be utilized to push the off-load of off-load cone valve further open, thus realizes zero-pressure off-load.When static state, the active force of pressure adjusting spring in regulation component is utilized to be close on the communicating passage mouth in high and low pressure chamber by off-load cone valve, thus effectively intercepted this passage, this hydraulic system can be boosted rapidly work done, improve the self-priming performance of this system, ensure that this system can reliably work continuously.
Above-mentioned scheme improves the subproblem of prior art to a certain extent, but, also at least there is following defect in the program: designs unreasonable, fail thoroughly to solve the technical problem that between unloading valve main body and upper cover, circumference is rotated, between adjusting nut and unloading valve main body, circumference is rotated, the poor stability of joint, secondly, the complex structure of upper cover and working life short, be not easily installed in unloading valve main body.
Model utility content
The purpose of this utility model is for the problems referred to above, provides a kind of unloading valve upper cover being easy to install, can improve the structural strength of joint.
For achieving the above object, the utility model have employed following technical proposal: this unloading valve upper cover comprises the cylinder axially with installation passage and the flange plate being connected to cylinder one end, reinforcement structure is provided with between cylinder and flange plate, flange plate is provided with some attachment holes, flange plate is also provided with some arc locating notches be positioned at away from cylinder one end, and the radius of an arc locating notch in some arc locating notches is greater than the radius of all the other arc locating notches, the one end being positioned at flange plate at installation passage is provided with the first annular positioning step, closing in portion is provided with away from one end of flange plate in cylinder, be provided with and the center hole installing channel connection in closing in portion axial centre, and the shaft axis of this center hole overlaps with installation passage shaft axis and arranges, the aperture of center hole is less than the internal diameter of installation passage and forms circular orientation face between center hole and installation passage, circular orientation face is provided with the first strip bulge of some even circumferentials distribution, and form the first bar-shaped trough between adjacent two the first strip bulges, the one end being provided with arc locating notch at flange plate is provided with the second strip bulge that some even circumferentials are distributed in center hole periphery, and form the second bar-shaped trough between adjacent two the second strip bulges.
In this application, be provided with flange plate and can be convenient to install, the structure then in conjunction with attachment hole and arc locating notch can improve installation efficiency and the connection fixing after installing; Be provided with circular orientation face to can be used for preventing circumference between adjusting nut (being provided with the projection that can insert in one by one in the first bar-shaped trough) and unloading valve main body from rotating in conjunction with the first strip bulge, being provided with the second strip bulge can prevent circumference between unloading valve main body (being provided with the projection that can insert in one by one in the second bar-shaped trough) and unloading valve upper cover from rotating, improve the structural strength of joint, stability during guarantee unloading valve operation and usability, simultaneously good airproof performance.
In above-mentioned unloading valve upper cover, the first described bar shaped convex top has the first arc convex; The second described bar shaped convex top has the second arc convex.This structure is easy to manufacture.
In above-mentioned unloading valve upper cover, described reinforcement structure comprises some stiffening ribs be connected between cylinder and flange plate.
In above-mentioned unloading valve upper cover, described flange plate is in square, and described attachment hole is four and is located at each bight of flange plate respectively, and described arc locating notch is four and is provided with an arc locating notch between adjacent two attachment holes.
In above-mentioned unloading valve upper cover, one end that described flange plate is provided with arc locating notch is provided with annular trough body.When being connected with unloading valve main body, in annular trough body, be provided with O-ring seal.
Compared with prior art, the advantage of this unloading valve upper cover is: 1, be provided with flange plate and can be convenient to install, and the structure then in conjunction with attachment hole and arc locating notch can improve installation efficiency and the connection fixing after installing; Be provided with circular orientation face to can be used for preventing circumference between adjusting nut (being provided with the projection that can insert in one by one in the first bar-shaped trough) and unloading valve main body from rotating in conjunction with the first strip bulge, being provided with the second strip bulge can prevent circumference between unloading valve main body (being provided with the projection that can insert in one by one in the second bar-shaped trough) and unloading valve upper cover from rotating, improve the structural strength of joint, stability during guarantee unloading valve operation and usability, practical; 2, long service life; 3, good airproof performance.
Accompanying drawing explanation
Fig. 1 is the perspective view that the utility model provides.
Fig. 2 is the structural representation that the utility model provides.
Fig. 3 is the sectional structure schematic diagram that the utility model provides.
Fig. 4 is the structural representation that in Fig. 3, A place amplifies.
Fig. 5 is the structural representation that in Fig. 3, C place amplifies.
Fig. 6 be in Fig. 2 B-B to structural representation.
In figure, cylinder 1, the annular positioning step 11a of installation passage 11, first, circular orientation face 12, first strip bulge 12a, flange plate 2, attachment hole 21, arc locating notch 22, second strip bulge 23, annular trough body 24, reinforcement structure 3, stiffening rib 31, closing in portion 4, center hole 41, first arc convex a, the second arc convex b.
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention will be further described in detail.
As shown in Figure 1, this unloading valve upper cover comprises the cylinder 1 axially with installation passage 11 and the flange plate 2 being connected to cylinder 1 one end, be provided with between cylinder 1 and flange plate 2 and strengthen structure 3, concrete, the reinforcement structure 3 of the present embodiment comprises some stiffening ribs 31 be connected between cylinder 1 and flange plate 2.
As shown in figures 1 to 6, flange plate 2 is provided with some attachment holes 21, flange plate 2 is also provided with some arc locating notches 22 be positioned at away from cylinder 1 one end, and the radius of an arc locating notch 22 in some arc locating notches 22 is greater than the radius of all the other arc locating notches 22, the effect of this structure is to prevent refitting of doing over again, and is directed effect.Secondly, the flange plate 2 of the present embodiment is in square, and described attachment hole 21 is four and is located at each bight of flange plate 2 respectively, and described arc locating notch 22 is four and is provided with an arc locating notch 22 between adjacent two attachment holes 21.
The one end being positioned at flange plate 2 at installation passage 11 is provided with the first annular positioning step 11a, first annular positioning step 11a inserts for equilibrium bomb spring abutment, closing in portion 4 is provided with away from one end of flange plate 2 in cylinder 1, be provided with and the center hole 41 installed passage 11 and be communicated with in closing in portion 4 axial centre, and the shaft axis of this center hole 41 overlaps with installation passage 11 shaft axis and arranges, the aperture of center hole 41 is less than the internal diameter of installation passage 11 and forms circular orientation face 12 between center hole 41 and installation passage 11, circular orientation face 12 is provided with the first strip bulge 12a of some even circumferentials distribution, and form the first bar-shaped trough between adjacent two the first strip bulge 12a, at the first strip bulge 12a top, there is the first arc convex a, be convenient to engagement and improve contact ratio.Adjusting nut inserts in center hole 41, and adjusting nut is provided with the projection that can insert in one by one in the first bar-shaped trough, ensures the stability that circumference is fixing and fixing.
The one end being provided with arc locating notch 22 at flange plate 2 is provided with the second strip bulge 23 that some even circumferentials are distributed in center hole 41 periphery, and forms the second bar-shaped trough between adjacent two the second strip bulges 23.The one end being provided with arc locating notch 22 at flange plate 2 is provided with annular trough body 24.Second bar-shaped trough and the male cooperation be located in unloading valve main body.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Although more employ cylinder 1, the annular positioning step 11a of installation passage 11, first, circular orientation face 12, first strip bulge 12a, flange plate 2, attachment hole 21, arc locating notch 22, second strip bulge 23, annular trough body 24 herein, strengthen the term such as structure 3, stiffening rib 31, closing in portion 4, center hole 41, first arc convex a, the second arc convex b, do not get rid of the possibility using other term.These terms are used to be only used to describe and explain essence of the present utility model more easily; The restriction that they are construed to any one additional is all contrary with the utility model spirit.
Claims (5)
1. a unloading valve upper cover, it is characterized in that, comprise and axially there is the cylinder (1) of installation passage (11) and be connected to the flange plate (2) of cylinder (1) one end, be provided with between cylinder (1) and flange plate (2) and strengthen structure (3), flange plate (2) is provided with some attachment holes (21), flange plate (2) is also provided with some arc locating notches (22) be positioned at away from cylinder (1) one end, and the radius of an arc locating notch (22) in some arc locating notches (22) is greater than the radius of all the other arc locating notches (22), the one end being positioned at flange plate (2) in installation passage (11) is provided with the first annular positioning step (11a), closing in portion (4) is provided with away from one end of flange plate (2) in cylinder (1), be provided with and the center hole (41) installed passage (11) and be communicated with in closing in portion (4) axial centre, and the shaft axis of this center hole (41) overlaps arrange with installation passage (11) shaft axis, the aperture of center hole (41) is less than the internal diameter of installation passage (11) and forms circular orientation face (12) between center hole (41) and installation passage (11), circular orientation face (12) are provided with first strip bulge (12a) of some even circumferentials distribution, and form the first bar-shaped trough between adjacent two the first strip bulges (12a), the one end being provided with arc locating notch (22) at flange plate (2) is provided with the second strip bulge (23) that some even circumferentials are distributed in center hole (41) periphery, and form the second bar-shaped trough between adjacent two the second strip bulges (23).
2. unloading valve upper cover according to claim 1, is characterized in that, described the first strip bulge (12a) top has the first arc convex (a); Described the second strip bulge (23) top has the second arc convex (b).
3. unloading valve upper cover according to claim 1 and 2, is characterized in that, described reinforcement structure (3) comprises some stiffening ribs (31) be connected between cylinder (1) and flange plate (2).
4. unloading valve upper cover according to claim 1 and 2, it is characterized in that, described flange plate (2) is in square, described attachment hole (21) is four and is located at each bight of flange plate (2) respectively, and described arc locating notch (22) is four and between adjacent two attachment holes (21), is provided with an arc locating notch (22).
5. unloading valve upper cover according to claim 4, is characterized in that, one end that described flange plate (2) is provided with arc locating notch (22) is provided with annular trough body (24).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433791.2U CN204083425U (en) | 2014-08-03 | 2014-08-03 | Unloading valve upper cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420433791.2U CN204083425U (en) | 2014-08-03 | 2014-08-03 | Unloading valve upper cover |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204083425U true CN204083425U (en) | 2015-01-07 |
Family
ID=52176146
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420433791.2U Expired - Fee Related CN204083425U (en) | 2014-08-03 | 2014-08-03 | Unloading valve upper cover |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204083425U (en) |
-
2014
- 2014-08-03 CN CN201420433791.2U patent/CN204083425U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150107 Termination date: 20150803 |
|
| EXPY | Termination of patent right or utility model |