CN202612740U - Pilot one-way sequence valve - Google Patents
Pilot one-way sequence valve Download PDFInfo
- Publication number
- CN202612740U CN202612740U CN 201220007341 CN201220007341U CN202612740U CN 202612740 U CN202612740 U CN 202612740U CN 201220007341 CN201220007341 CN 201220007341 CN 201220007341 U CN201220007341 U CN 201220007341U CN 202612740 U CN202612740 U CN 202612740U
- Authority
- CN
- China
- Prior art keywords
- valve
- valve body
- guide
- pilot
- spring
- 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 discloses a pilot one-way sequence valve, which comprises a valve body (1), a main valve core (2), a pilot valve and an adjusting rod (3), wherein the valve body (1) is provided with a liquid inlet (4) and a liquid outlet (5); the main valve core (2), the pilot valve and the adjusting rod (3) are arranged in the valve body; the outside diameter of the head of the upper end of the valve body is greater than that of the lower part of the head; the lower part of the head of the valve body is provided with an external thread; the valve body is vertically communicated; the liquid inlet (4) is arranged at a position where a lower opening of the valve body is located; the liquid outlet is arranged on the valve wall of the lower part of the head of the valve body; a restoring spring (6) is connected between the pilot valve and the main valve core (2); a pilot valve cavity (7) is formed in the pilot valve; the pilot valve cavity is communicated with the outside through a drainage passage (8); and the main valve core is provided with an axial passage (9). The outer shape of the valve body is equivalent to a hinged bolt which can play a role in connecting a hydraulic part and a pipeline, so that the hinged bolt and the pilot one-way sequence valve are integrated.
Description
Technical field
The utility model relates to valve field, is a kind of leading type one way sequence valve specifically.
Background technique
Sequence valve is in having the system of two or more duplexures, with controlling liquid pressure valve port is opened and closed, thereby control actuating component realizes the valve of predetermined sequence action.Guide type sequence valve is the hydraulic pressure that comes the balance liquid entering hole with pilot valve, and when the hydraulic pressure of liquid entering hole was lower than the spring pressure that is connected on guide's spool, then sequence valve cut out; When the hydraulic pressure of liquid entering hole was higher than the spring pressure that is connected on guide's spool, guide's spool was open, and the interior liquid of pilot valve this moment is partly got back in the fuel tank; The main valve plug action of sequence valve; Thereby liquid entering hole and liquid outlet are communicated, and liquid flows out from liquid outlet, makes next stage hydraulic element (oil hydraulic cylinder etc.) action.Pilot valve can be selected according to use occasion and needs as the element of the preset pressure regulation pressure in the sequence valve.
Because the leading type one way sequence valve generally is used in the hydraulic system, and often need hollow hinge bolt to connect between hydraulic part in the hydraulic system and the pipeline, when needs use the leading type one way sequence valve; Need the leading type one way sequence valve is installed on pipeline separately, promptly the leading type one way sequence valve separates with hinge bolt, when installing and use, need distinguish installing and locating; Operation bothers relatively; This moment, rate of fault was also higher, was unfavorable for maintenance, had brought inconvenience to use.
The model utility content
The technical problem that the utility model will solve is, a kind of leading type one way sequence valve that can play interconnect function to the hydraulic part and the pipeline of hydraulic system is provided, and promptly collecting hinge bolt and leading type one way sequence valve is one.
The technical solution of the utility model is; A kind of leading type one way sequence valve of following structure is provided; Comprise valve body, main valve plug, pilot valve and adjustable lever, described valve body is provided with liquid entering hole and liquid outlet, and described main valve plug, pilot valve and adjustable lever are arranged in the valve body; The external diameter of described valve body upper end head is greater than the external diameter of head with the bottom, and described valve head is provided with outside thread with the bottom, described valve body up/down perforation; The valve body lower end opening is a liquid entering hole; Liquid outlet is arranged on the valve wall of valve head with the bottom, is connected with Returnning spring between described pilot valve and the main valve plug, is guide's valve pocket in the described pilot valve; Described guide's valve pocket communicates with the external world through the drainage passage, and described main valve plug is provided with axial passage.
Adopt above structure, the utility model compared with prior art has the following advantages: adopt the utility model structure, when the hydraulic pressure of liquid entering hole during less than the pressure of pilot valve, main valve plug is closed, and liquid entering hole does not communicate with liquid outlet; When the hydraulic pressure of liquid entering hole during greater than the pressure of pilot valve, main valve plug is up to certain position, and liquid entering hole communicates with liquid outlet; Liquid flows out from liquid outlet, makes next stage hydraulic element actions, when liquid entering hole pressure during less than the pilot valve setting pressure pilot valve close; Main valve plug can be under the effect of Returnning spring return; In the process that main valve plug resets, the liquid of liquid entering hole gets into the cavity between pilot valve and the spool through axial passage (damping), to replenish the liquid in the cavity; The outer shape of the utility model valve body is equivalent to a hinge bolt; Can play interconnect function to hydraulic part and pipeline; Making the utility model collection hinge bolt and leading type one way sequence valve is one; The position of the liquid in-out mouth of this valve and pilot valve installation simultaneously is more reasonable, is convenient to the controlling liquid flow and regulates pressure.
As improvement; Be provided with the valve core channel that is used to be communicated with liquid entering hole and liquid outlet in the described main valve plug; Like this, when main valve plug went upward to valve core channel with position that liquid outlet communicates, liquid just can flow out from liquid outlet; Though adopt solid main valve plug also can make the liquid in-out mouth communicate being up to certain position; But adopt the design of this valve core channel, be convenient to regulate the flow of liquid, also make things convenient for and regulate the pressure of opening the required liquid entering hole of main valve plug through the spring pressure of regulating in the pilot valve.
As improvement; Described pilot valve comprises guide's valve body, relief piston, guide's spool and spring I; Described guide's valve body is provided with poppet port, and described guide's spool withstands poppet port under the effect of spring I, and described spring I one end is fixed on the relief piston; The other end is fixed on guide's spool, and the top of described relief piston contacts with adjustable lever or is connected.Like this, can regulate the position of relief piston through adjustable lever, thus the pressure of Regulation spring I, and the final purpose that realizes regulating preset pressure is to improve or to reduce the operating pressure of (promptly open or close) this valve as required.
As improvement, be provided with nonreturn valve core, spring II in the described main valve plug and be used to be communicated with the half-duplex channel of liquid in-out mouth, spring II one end is fixed on the main valve plug; The other end is fixed on the nonreturn valve core, and described nonreturn valve core withstands half-duplex channel, promptly on main valve plug, increases one-way valve; At the hydraulic pressure of liquid entering hole during greater than the hydraulic pressure of liquid outlet; One-way valve ends, when the hydraulic pressure of liquid outlet during greater than the hydraulic pressure of liquid entering hole, and the one-way valve conducting; This moment, the liquid at liquid outlet place can be back to liquid entering hole, and it is more convenient that this product is used.
As improvement, described main valve plug is provided with the external control passage with cavity between the pilot valve and communicates with the external world, like this, can realize the switching of sequence valve through control external control passage, controls very convenient.
As improvement, described adjustable lever places in guide's valve body, withstands relief piston, and is fixed on guide's valve body through set screw nut.Design like this, more convenient adjusting relief piston is provided with the screw-in position of adjustable lever, under the effect of set screw nut, fixes with guide's valve body, prevents to become flexible.
As improvement, described relief piston is the hollow shell-like, opening down, an end of Returnning spring is fixed on the inner bottom part of relief piston, is convenient to the guiding to Returnning spring.
Description of drawings
Accompanying drawing is the structural representation of the utility model leading type one way sequence valve.
As shown in the figure 1, valve body, 2, main valve plug, 3, adjustable lever, 4, liquid entering hole, 5, liquid outlet, 6, Returnning spring; 7, guide's valve pocket, 8, the drainage passage, 9, axial passage, 10, valve core channel, 11, guide's valve body; 12, relief piston, 13, guide's spool, 14, spring I, 15, nonreturn valve core, 16, spring II; 17, half-duplex channel, 18, the external control passage, 19, set screw nut, 20, handwheel, 21, back-up ring.
Embodiment
Below in conjunction with accompanying drawing and specific embodiment the utility model is described further.
As shown in the figure, the leading type one way sequence valve of the utility model comprises valve body 1, main valve plug 2, pilot valve and adjustable lever 3, and described valve body 1 is provided with liquid entering hole 4 and liquid outlet 5, and described main valve plug 2, pilot valve and adjustable lever 3 are arranged in the valve body 1; The external diameter of described valve body 1 upper end head (being generally outer-hexagonal) is greater than the external diameter of head with the bottom; Described valve body 1 head is provided with outside thread with the bottom; Described valve body 1 up/down perforation, valve body 1 lower ending opening place is a liquid entering hole 4, liquid outlet 5 is arranged on the valve wall of valve body 1 head with the bottom; Be connected with Returnning spring 6 between described pilot valve and the main valve plug 2; In the described pilot valve is guide's valve pocket 7, and described guide's valve pocket 7 communicates with the external world through drainage passage 8, and described main valve plug 2 is provided with axial passage 9.
Be provided with the valve core channel 10 that is used to be communicated with liquid entering hole 4 and liquid outlet 5 in the described main valve plug 2.
Described pilot valve comprises guide's valve body 11, relief piston 12, guide's spool 13 and spring I 14; Described guide's valve body 11 is provided with poppet port; Described guide's spool 13 withstands poppet port under the effect of spring I 14; Described spring I14 one end is fixed on the relief piston 12, and the other end is fixed on guide's spool 13, and the top of described relief piston 12 contacts with adjustable lever 3 or is connected.
Be provided with nonreturn valve core 15, spring II 16 in the described main valve plug 2 and be used to be communicated with the half-duplex channel 17 of liquid in-out mouth; Spring II16 one end is fixed on the main valve plug 2 through back-up ring 21; The other end is fixed on the nonreturn valve core 15, and described nonreturn valve core 15 withstands half-duplex channel 17.
Described main valve plug 2 is provided with external control passage 18 with cavity between the pilot valve and communicates with the external world.
Described adjustable lever 3 places in guide's valve body 11, withstands relief piston 12, and is fixed on guide's valve body 11 through set screw nut 19.Also be provided with handwheel 20 on the described adjustable lever 3.
Described relief piston 12 is the hollow shell-like, opening down, an end of Returnning spring 6 is fixed on the inner bottom part of relief piston 12.
Below only be described, but can not be interpreted as it is restriction claim with regard to the utility model preferred embodiment.The utility model not only is confined to above embodiment, and its concrete structure allows variation.In a word, all various variations of in the protection domain of the utility model independent claims, being done are all in the protection domain at the utility model.
Claims (7)
1. a leading type one way sequence valve comprises valve body (1), main valve plug (2), pilot valve and adjustable lever (3), and described valve body (1) is provided with liquid entering hole (4) and liquid outlet (5); Described main valve plug (2), pilot valve and adjustable lever (3) are arranged in the valve body (1); It is characterized in that: the external diameter of described valve body (1) upper end head is greater than the external diameter of head with the bottom, and described valve body (1) head is provided with outside thread with the bottom, described valve body (1) up/down perforation; Valve body (1) lower ending opening place is liquid entering hole (4); Liquid outlet (5) is arranged on the valve wall of valve body (1) head with the bottom, is connected with Returnning spring (6) between described pilot valve and the main valve plug (2), is guide's valve pocket (7) in the described pilot valve; Described guide's valve pocket (7) communicates with the external world through drainage passage (8), and described main valve plug (2) is provided with axial passage (9).
2. leading type one way sequence valve according to claim 1 is characterized in that: be provided with the valve core channel (10) that is used to be communicated with liquid entering hole (4) and liquid outlet (5) in the described main valve plug (2).
3. leading type one way sequence valve according to claim 1; It is characterized in that: described pilot valve comprises guide's valve body (11), relief piston (12), guide's spool (13) and spring I (14); Described guide's valve body (11) is provided with poppet port; Described guide's spool (13) withstands poppet port under the effect of spring I (14); Described spring I (14) one ends are fixed on the relief piston (12), and the other end is fixed on guide's spool (13), and the top of described relief piston (12) contacts with adjustable lever (3) or is connected.
4. leading type one way sequence valve according to claim 1; It is characterized in that: be provided with nonreturn valve core (15), spring II (16) in the described main valve plug (2) and be used to be communicated with the half-duplex channel (17) of liquid in-out mouth; Spring II (16) one ends are fixed on the main valve plug (2); The other end is fixed on the nonreturn valve core (15), and described nonreturn valve core (15) withstands half-duplex channel (17).
5. leading type one way sequence valve according to claim 1 is characterized in that: described main valve plug (2) is provided with external control passage (18) with cavity between the pilot valve and communicates with the external world.
6. leading type one way sequence valve according to claim 3 is characterized in that: described adjustable lever (3) places in guide's valve body (11), withstands relief piston (12), and is fixed on guide's valve body (11) through set screw nut (19).
7. leading type one way sequence valve according to claim 3 is characterized in that: described relief piston (12) is the hollow shell-like, opening down, an end of Returnning spring (6) is fixed on the inner bottom part of relief piston (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220007341 CN202612740U (en) | 2012-01-02 | 2012-01-02 | Pilot one-way sequence valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220007341 CN202612740U (en) | 2012-01-02 | 2012-01-02 | Pilot one-way sequence valve |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202612740U true CN202612740U (en) | 2012-12-19 |
Family
ID=47346441
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220007341 Expired - Fee Related CN202612740U (en) | 2012-01-02 | 2012-01-02 | Pilot one-way sequence valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202612740U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563140A (en) * | 2012-01-02 | 2012-07-11 | 林友根 | Pilot-operated one-way sequence valve |
| CN109602999A (en) * | 2018-12-04 | 2019-04-12 | 许克璞 | A kind of picc indwelling tube continues feed flow preventing clogging up device and its feed liquid method |
-
2012
- 2012-01-02 CN CN 201220007341 patent/CN202612740U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563140A (en) * | 2012-01-02 | 2012-07-11 | 林友根 | Pilot-operated one-way sequence valve |
| CN109602999A (en) * | 2018-12-04 | 2019-04-12 | 许克璞 | A kind of picc indwelling tube continues feed flow preventing clogging up device and its feed liquid method |
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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 | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121219 Termination date: 20210102 |