CN203404150U

CN203404150U - Valve structure capable of manually adjusting fast and slow oil pumping

Info

Publication number: CN203404150U
Application number: CN201320498883.4U
Authority: CN
Inventors: 李萍; 唐循申; 王胜; 刘羽
Original assignee: CHANGSHU TONGRUN AUTO REPAIRING EQUIPMENT Co Ltd
Current assignee: CHANGSHU TONGRUN AUTO REPAIRING EQUIPMENT Co Ltd
Priority date: 2013-08-15
Filing date: 2013-08-15
Publication date: 2014-01-22
Anticipated expiration: 2023-08-15

Abstract

The utility model discloses a valve structure capable of manually adjusting fast and slow oil pumping, and belongs to the technical field of hydraulic driving devices. The valve structure comprises a valve seat, a large pump oil inlet channel one-way valve, a small pump oil inlet channel one-way valve, a large pump oil outlet channel one-way valve, a small pump oil outlet channel one-way valve, a small pump pressure adjusting valve, a working oil cylinder pressure discharging oil returning valve, a large pump core and a large pump core pressure discharging manually operating valve. The left end of the valve seat is provided with an oil storing cylinder, the right end of the valve seat is provided with an oil connector, and the valve seat is provided with a large pump core cavity oil inlet channel, a large pump core cavity oil outlet channel, a small pump core cavity oil inlet channel, a small pump core cavity oil outlet channel, a main oil returning channel, a main oil outlet channel, an oil returning channel, a large pump core cavity, a small pump core cavity and an oil inlet channel. One end of a small pump core cavity overpressure oil returning channel is communicated with the main oil retuning channel, and the other end of the small pump core cavity overpressure oil retuning channel is communicated with the small pump core cavity. The working oil cylinder pressure discharging oil returning valve is located on the oil returning channel of the valve seat. The lower portion of the large pump core is narrowed to form a small pump core. The large pump core pressure discharging manually operating valve is located between the large pump oil outlet channel one-way valve and the working oil cylinder pressure discharging oil returning valve. According to the valve structure, high-pressure small oil mass oil supplying is achieved, and the effect that an operator operates the large pump core effortlessly is guaranteed.

Description

The fast valve body structure of pump oil at a slow speed of manual tune

Technical field

The utility model belongs to fluid pressure drive device technical field, is specifically related to the fast valve body structure of pump oil at a slow speed of a kind of manual tune.

Background technique

The valve body structure of the fast pump oil at a slow speed of above mentioned manual tune is main but be not restricted to use on jack hydraulic press, for jack hydraulic press, (custom claims work station, as follows) diving device hydraulic oil is provided, so that by the operating cylinder post of the operating cylinder of diving device, to being positioned over work plate bracket, (this work plate bracket is arranged on jack hydraulic press, and the processing of the workpiece the below corresponding to oil cylinder post), for example, to workpiece punching or bending, etc.

Above mentioned jack hydraulic press is a kind of special-purpose machinery that can play the effect of picking up the neglected and to supply the deficient for large-sized hydraulic press (also claiming hydraulic press), because large-sized hydraulic press cost of investment is high, bulky and inspection bothers, and jack hydraulic press is owing to having application places wide adaptability, volume is little, easy to operate, reduce investment outlay and the easy strong point of inspection, thereby can be widely used in the production line of industrial and mining enterprise, building site, electromechanical equipment repairing trades, vehicle maintenance industry, the student of family and even vocational technical school starts laboratory, etc..

The technical information of above mentioned jack hydraulic press can be seen in from disclosed Chinese patent literature, slightly with exemplify as CN201205566Y(jack hydraulic press), CN2144571Y(hand-operated hydraulic press), the additional jack type laminater of CN201385455Y(hand screw), CN201677524U(jack hydraulic press), CN201161542Y(Manual Dual-Use Pneumatic Presses) CN201333809Y(Manual Dual-Use Pneumatic Presses) and the oil cylinder movement locking mechanism of CN202071397U(jack hydraulic press), etc.In these patent documentations that are not limited to exemplify, CN201161452Y, CN201333809Y and CN202071397U all show hydraulic power unit, but do not disclose the valve body structure of oil hydraulic pump, the valve body structure of the oil hydraulic pump said here mainly refers to self structure, the pump core matching with valve body of valve body and is opened in the hydraulic circuit on valve body.As the industry's knowledge of the reason, as jack hydraulic press, rapid operation and quickness and high efficiency are its important design considerations, specifically, when the operating cylinder post of operating cylinder is not yet stressed, oil mass is supplied with operating cylinder by the hydraulic oil sucking rapidly greatly, and the unlikely operator of causing operates the operating cylinder fuel feeding of requiring great effort and can continue as diving device when operating cylinder is stressed, use safeguard work oil cylinder post to workpiece processing (punching, bending etc.) work efficiency, yet, in current disclosed patent and non-patent literature, be not yet seen in the technology enlightenment that is met this requirement.In view of this, the applicant has done useful design, has formed technological scheme described below, and is taking secrecy provision Xia the applicant plant area to carry out simulation test, and it is practicable that result proves.

Summary of the invention

Task of the present utility model be to provide a kind of when zero load, can meet to the quick fuel feeding requirement of the large oil mass low-pressure of operating cylinder, under loaded-up condition, can ensure the large pressure of operating cylinder fuel feeding and can guarantee the fast valve body structure of pump oil at a slow speed of manual tune of operator's rapid operation at a slow speed.

Task of the present utility model completes like this, the fast valve body structure of pump oil at a slow speed of a kind of manual tune, comprise valve seat, on the left end end face of this valve seat, be equipped with an oil storage cylinder, and on the right-hand member end face of valve seat, be equipped with one for the delivery connection of hydraulic oil is provided to operating cylinder, and on valve seat, offering large pump core chamber enters, oil road, small pump core chamber is entered, oil road, total back oil road, total oil road, back oil road, large pump core chamber, small pump core chamber and oil input channel, oil input channel is positioned at the left end of valve seat, and communicate with described oil storage cylinder, one end of large pump core chamber oil input channel communicates with oil input channel, the other end communicates with large pump core chamber, one end of large pump core chamber oil road communicates with large pump core chamber, the other end communicates with total oil road, one end of small pump core chamber oil input channel communicates with oil input channel, the other end communicates with small pump core chamber, one end of small pump core chamber oil road communicates with small pump core chamber, the other end communicates with total oil road, and communicate with delivery connection, one end of total back oil road communicates with oil storage cylinder, the other end communicates with back oil road, large pump core chamber is positioned at the middle position of valve seat, small pump core chamber is formed in the bottom in large pump core chamber with narrow contracting state, one large pump oil input channel one-way valve, this large pump oil input channel one-way valve position on described valve seat is on the passage between described oil input channel and large pump core chamber oil input channel, one little pump oil input channel one-way valve, this little pump oil input channel one-way valve position on described valve seat is on the passage between described oil input channel and small pump core chamber oil input channel, one pumps greatly oil duct one-way valve and a little oil duct one-way valve that pumps, pump greatly the position of oil duct one-way valve on valve seat on the passage between described large pump core chamber oil road and described total oil road, the little position of oil duct one-way valve on valve seat of pumping is on the passage between described small pump core chamber oil road and total oil road, one little pump pressure regulator valve, this little pump pressure regulator valve is arranged on the passage of the small pump core chamber superpressure back oil road being opened on valve seat, and one end of this small pump core chamber superpressure back oil road communicates with described total back oil road, and the other end communicates with described small pump core chamber, one operating cylinder release scavenger valve, this operating cylinder release scavenger valve position on described valve seat is positioned on the passage of described back oil road, one large pump core, this large pump core matches with described large pump core chamber, and forms and have a small pump core in the narrow contracting in the bottom of this large pump core, and this small pump core matches with described small pump core chamber, one large pump core release manual operating valve, this large pump core release manual operating valve position on described valve seat is positioned on the passage of described back oil road, and pumps greatly between oil duct one-way valve and operating cylinder release scavenger valve described.

In a specific embodiment of the present utility model, described large pump core chamber oil input channel, large pump core chamber oil road, small pump core chamber oil input channel, small pump core chamber oil road and total back oil road are laterally offered along the length direction of described valve seat; Described oil input channel, small pump core chamber superpressure back oil road, total oil road and back oil road are longitudinally offered along the short transverse of described valve seat.

In another specific embodiment of the present utility model, described total back oil road is between described large pump core chamber oil input channel and large pump core chamber oil road and small pump core chamber oil input channel and small pump core chamber oil road.

In another specific embodiment of the present utility model, on the chamber wall in described large pump core chamber, be embedded with a large pump core seal ring, described large pump core and this large pump core seal ring are sealed and matched; On described small pump core and the position that is positioned at the end of small pump core offer a small pump core o-ring groove, in this small pump core o-ring groove, be embedded with a small pump core seal ring, this small pump core seal ring and described small pump core chamber are sealed and matched.

In another specific embodiment of the present utility model, at described valve seat, on the end face of one end of described oil storage cylinder, offer one for the hydraulic oil in oil storage cylinder being introduced to hydraulic oil oil inlet hole described oil input channel and that communicate with oil input channel and being offered one for the hydraulic oil of described total back oil road being introduced to hydraulic oil spill port in oil storage cylinder and that communicate with total back oil road.

Of the present utility model, also have in a specific embodiment, at the position of the hydraulic oil oil inlet hole corresponding to described, be provided with the filtering net cylinder of the impurity for filtering hydraulic oil.

More of the present utility model and in a specific embodiment, at described valve seat, towards the top of described delivery connection one end, offer one and press hand column installation tapped hole, at this, press hand column and install and on tapped hole, with thread fiting mode, to be equipped with one and to press hand column, described large pump core with press hand column and be located along the same line each other.

In of the present utility model and then a specific embodiment, at described valve seat, on the end face of one end of described delivery connection, offer a hydraulic oil oil outlet, this hydraulic oil oil outlet communicates with described small pump core chamber oil road, and communicates with described delivery connection.

The technological scheme that the utility model provides is by large pump core and small pump core while pump oil when zero load, and the hydraulic oil in oil storage cylinder is successively through oil input channel, large pump in line check valve, large pump core chamber oil input channel, large pump core chamber, large pump core chamber oil road, pump greatly oil duct one-way valve, total oil road, small pump core chamber oil road and delivery connection are supplied with the operating cylinder as load, and hydraulic oil is successively through oil input channel simultaneously, little pump oil input channel one-way valve, small pump core chamber oil input channel, small pump core chamber, the little oil duct one-way valve that pumps, small pump core chamber oil road and delivery connection are supplied with the operating cylinder as load, thereby realize the quick fuel feeding of the large oil mass of low-pressure, and under operating cylinder loaded-up condition, the hydraulic oil that comes from large pump core chamber oil road is in transit via returning in oil storage cylinder through back oil road and total back oil road successively after manually operated large pump core release manual operating valve, yet the hydraulic oil that comes from small pump core chamber continues to supply with operating cylinder by delivery connection, thereby embody the little oil mass fuel feeding of high pressure and guarantee the labor-saving effect of operator to large pump core operation.

Accompanying drawing explanation

Fig. 1 is example structure figure of the present utility model.

Fig. 2 is the longitudinal sectional view of Fig. 1.

Fig. 3 is hydraulic circuit schematic diagram of the present utility model.

Embodiment

For the auditor that the makes Patent Office especially public can be expressly understood technical spirit of the present utility model and beneficial effect more, claimant elaborates the mode with embodiment below, but to embodiment's description, be not all the restriction to the utility model scheme, any according to the utility model design, done only for pro forma but not substantial equivalent transformation all should be considered as the technical solution of the utility model category.

The claimant in the following description concept of every directionality that relates to left end, right-hand member, top, below, front side and rear side and so on, all for illustrated location status, therefore can not be interpreted as the restriction to the utility model scheme accordingly.

Refer to Fig. 1 to Fig. 3, provided a valve seat 1, in one end of this valve seat 1, be on left end end face, to be equipped with an oil storage cylinder 12(Fig. 2 and Fig. 3 shows), and at the other end of valve seat 1, on right-hand member end face, be equipped with one for showing to operating cylinder 20(Fig. 3) delivery connection 13 of hydraulic oil is provided.On valve seat 1, offer large pump core chamber oil input channel 11a, large pump core chamber oil road 11b, small pump core chamber oil input channel 11c, small pump core chamber oil road 11d, total back oil road 11e, total oil road 11f, back oil road 11g, large pump core chamber 11h and small pump core chamber 11i and oil input channel 11j, oil input channel 11j is opened in the left end of valve seat 1, and this oil input channel 11j shows with oil storage cylinder chamber 121(Fig. 2 and Fig. 3 of oil storage cylinder 12 by the hydraulic oil oil inlet hole 14 being opened on valve seat 1 left end end face) communicate.Shown in Fig. 1 and Fig. 2, at the position corresponding to hydraulic oil oil inlet hole 14, be provided with a filtering net cylinder 141, by this filtering net cylinder 141, by the hydraulic oil filtering in oil storage cylinder chamber 121, after avoiding foreign material in hydraulic oil to enter oil duct with oil input channel 11j, oil duct is produced and stopped up.

One end of aforesaid large pump core chamber oil input channel 11a communicates with oil input channel 11j, and the other end communicates with large pump core chamber 11h, and one end of large pump core chamber oil road 11b communicates with large pump core chamber 11h, and the other end communicates with total oil road 11f.One end of aforesaid small pump core chamber oil input channel 11c communicates with oil input channel 11j, the other end communicates with small pump core chamber 11i, and one end of aforesaid small pump core chamber oil road 11d communicates with small pump core chamber 11i, the other end communicates with total oil road 11f, and communicates with delivery connection 13.One end of aforesaid total back oil road 11e (left end) communicates with the oil storage cylinder chamber 121 of oil storage cylinder 12, the other end (right-hand member) communicates with back oil road 11g, large pump core chamber 11h is opened in the middle position of valve seat 1, and small pump core chamber 11i is formed in the below of large pump core chamber 11h with narrow contracting state.

Shown in figure, on the left end end face of aforesaid valve seat 1, offer a hydraulic oil spill port 15, this hydraulic oil spill port 15 communicates with oil storage cylinder chamber 121, and communicates with aforementioned one end (being left end) of total back oil road 11e.That is to say, the hydraulic oil in total back oil road 11e enters in oil storage cylinder chamber 121 for 15 times through hydraulic oil spill port.

Preferably, above mentioned large pump core chamber oil input channel 11a, large pump core chamber oil road 11b, small pump core chamber oil input channel 11c, small pump core chamber oil road 11d and total back oil road 11e laterally offer along the length direction of valve seat 1, and aforesaid oil input channel 11j, total oil road 11f and back oil road 11g longitudinally offer along the short transverse of valve seat 1.And shown in figure, total back oil road 11e is between large pump core chamber oil input channel 11a and large pump core chamber oil road 11b and small pump core chamber oil input channel 11c and small pump core chamber oil road 11d.

Please see Fig. 1 by emphasis, provided a large pump oil input channel one-way valve 2, the effect that opens or closes the fluid passage between oil input channel 11j and large pump core chamber oil input channel 11a, on the passage between aforesaid oil input channel 11j and large pump core chamber oil input channel 11a, is played by this large pump oil input channel one-way valve 2 in this large pump oil input channel one-way valve 2 position on valve seat 1.This large pump oil input channel one-way valve 2 comprises large pump oil input channel sealing screw 21, large pump oil input channel steel ball valve spring 22 and large pump oil input channel steel ball valve 23, large pump oil input channel sealing screw 21 screws the side (being the front side of location status shown in Fig. 1) at the length direction of valve seat 1 with thread fiting mode, and by the first seal washer 211 sealings.Large pump oil input channel steel ball valve spring 22 and large pump oil input channel steel ball valve 23 are contained in the large pump oil input channel valve pocket 18a being opened on valve seat 1 (Fig. 1 shows), and large pump oil input channel steel ball valve 23 is on the passage between aforesaid oil input channel 11j and large pump core chamber oil input channel 11a, one end of large pump oil input channel steel ball valve spring 22 is bearing on large pump oil input channel steel ball valve 23, and the other end is bearing on the end face of large pump oil input channel sealing screw 21.

Provided a little pump oil input channel one-way valve 3, the effect of opening or closing the fluid passage between oil input channel 11j and small pump core chamber oil input channel 11c, on the passage between aforesaid oil input channel 11j and small pump core chamber oil input channel 11c, is played in this little pump oil input channel one-way valve 3 position on valve seat 1 by this little pump oil input channel one-way valve 3.This little pump oil input channel one-way valve 3 comprises little pump oil input channel sealing screw 31, little pump oil input channel steel ball valve spring 32 and little pump oil input channel steel ball valve 33; little pump oil input channel sealing screw 31 screws the side (being the front side of location status shown in Fig. 1) at the length direction of valve seat 1 with thread fiting mode; and corresponding to the below of aforementioned large pump oil input channel one-way valve 2; this little pump oil input channel sealing screw 31 forms sealing by sheathed the second seal washer 311 on it with valve seat 1, avoids fluid seepage.Little pump oil input channel steel ball valve spring 32 and little pump oil input channel steel ball valve 33 are contained in the little pump oil input channel valve pocket 18b being opened on valve seat 1 (Fig. 1 shows), and little pump oil input channel steel ball valve 33 is on the passage between aforesaid oil input channel 11j and small pump core chamber oil input channel 11c; one end of little pump oil input channel steel ball valve spring 32 is bearing on little pump oil input channel steel ball valve 33, and the other end is bearing on the end face of little pump oil input channel sealing screw 31.

Provided one and pumped greatly oil duct one-way valve 4, this pumps greatly the position of oil duct one-way valve 4 on valve seat 1 on the passage between large pump core chamber oil road 11b and total oil road 11f, pumps greatly oil duct one-way valve 4 play the effect that opens or closes the fluid passage between large pump core chamber oil road 11b and total oil road 11f by this.This pumps greatly oil duct one-way valve 4 and comprises and pump greatly oil channel sealing screw 41, pump oil duct steel ball valve spring 42 and pump greatly oil duct steel ball valve 43 greatly, pump greatly oil channel sealing screw 41 and screw the opposite side (being the rear side of location status shown in Fig. 1) at the length direction of valve seat 1 with thread fiting mode, and form sealing by being nested with pumping greatly between the 3rd seal washer 411 on oil channel sealing screw 41 and valve seat 1.Pump greatly oil duct steel ball valve spring 42 and pump greatly oil duct steel ball valve 43 and be contained in and be opened in pumping greatly (Fig. 1 shows) in oil duct valve pocket 18c on valve seat 1, and pump greatly oil duct steel ball valve 43 on the passage between aforesaid large pump core chamber oil road 11b and total oil road 11f, the one end of pumping greatly oil duct steel ball valve spring 42 is bearing in pumps greatly on oil duct steel ball valve 43, and the other end is bearing on the end face that pumps greatly oil channel sealing screw 41.

Provided a little oil duct one-way valve 5 that pumps, the effect that opens or closes the fluid passage between small pump core chamber oil road 11d and total oil road 11f, on the passage between small pump core chamber oil road 11d and total oil road 11f, is played by this little oil duct one-way valve 5 that pumps in this little oil duct one-way valve 5 position on valve seat 1 of pumping.This little oil duct one-way valve 5 that pumps comprises the little oil duct valve seat 51 that pumps, little oil duct steel ball valve spring 52 and the little oil duct steel ball valve 53 that pumps of pumping, the little oil duct valve seat 51 that pumps screws the right-hand member at valve seat 1 with thread fiting mode, and corresponding with aforesaid delivery connection 13, littlely pump oil duct steel ball valve spring 52 and the little oil duct steel ball valve 53 that pumps is contained in and is opened in little on valve seat 1 and pumps in oil duct valve pocket 18d (Fig. 2 shows), and the little oil duct steel ball valve 53 that pumps is on the passage between small pump core chamber oil road 11d and total oil road 11f, little one end of pumping oil duct steel ball valve spring 52 is bearing in little pumping on oil duct steel ball valve 53, the other end is bearing in little pumping on oil duct valve seat 51.

Shown in Fig. 1 and Fig. 2, aforesaid little pumping, on oil duct valve seat 51, offer one group of valve seat turnover oilhole 511, this group of valve seat turnover oilhole 511 communicates with the hydraulic oil oil outlet 17 being opened on the right-hand member end face of valve seat 1.More particularly, because delivery connection 13 communicates with hydraulic oil oil outlet 17, therefore one group of valve seat turnover oilhole 511 communicates with delivery connection 13, and delivery connection 13 shows by oil pipe pipeline 131(Fig. 3) communicate with the operating cylinder 20 of having mentioned above.

Please continue that emphasis is shown in Fig. 1 and in conjunction with Fig. 3, provided a little pump pressure regulator valve 6, this little pump pressure regulator valve 6 position on valve seat 1 is positioned at a side (front side of location status shown in Fig. 1) of the length direction of valve seat 1, and this little pump pressure regulator valve 6 is corresponding to being opened on the passage of the small pump core chamber superpressure back oil road 11k on valve seat 1, when the pressure oil in the 11i of small pump core chamber surpasses the pressure that this little pump pressure regulator valve 6 sets, open so little pump pressure regulator valve 6, make the pressure oil in the 11i of small pump core chamber enter total back oil road 11e through small pump core chamber superpressure back oil road 11k, by total back oil road 11e, introduce oil storage cylinder chamber 121.Know therefrom, one end of small pump core chamber superpressure back oil road 11k communicates with total back oil road 11e, and the other end communicates with small pump core chamber 11i.

Aforesaid little pump pressure regulator valve 6 comprises pressure regulator valve swivel nut 61, pressure regulating screw 62, pressure adjusting spring 63 and little pump pressure regulation steel ball 64 and pressure regulation swivel nut sealing screw 65, pressure regulator valve swivel nut 61 with on valve seat 1 and connect tapped hole 19 screw threads with the corresponding pressure regulator valve swivel nut of aforementioned little pump pressure regulation valve pocket 18e and connect, pressure regulator valve swivel nut oilhole 611 on this pressure regulator valve swivel nut 61 communicates with aforementioned small pump core chamber superpressure back oil road 11k, and is arranged with pressure regulator valve seal washer 612 on pressure regulator valve swivel nut 61.Pressure adjusting spring 63 and little pump pressure regulation steel ball 64 are positioned at the pressure regulator valve swivel nut chamber of pressure regulator valve swivel nut 61, wherein: little pump pressure regulation steel ball 64 is positioned at the bottom in pressure regulator valve swivel nut chamber, pressure adjusting spring 63 is bearing in a side of spring seat 631 towards one end of little pump pressure regulation steel ball 64, and the other end of spring seat 631 contacts with little pump pressure regulation steel ball 64, pressure adjusting spring 63 is bearing on pressure regulating screw 62 towards one end of pressure regulating screw 62, and pressure regulating screw 62 and pressure regulator valve swivel nut 61 screw-thread fit.Adjust swivel nut sealing screw 65 after adding cover sealing screw packing ring 651 in the afterbody corresponding to pressure regulating screw 62 and pressure regulator valve swivel nut 61 screw-thread fit.

Provided an operating cylinder release scavenger valve 7, this operating cylinder release scavenger valve 7 position on valve seat 1 is positioned on the passage of aforementioned back oil road 11g, by this operating cylinder release scavenger valve 7, the hydraulic oil in operating cylinder 20 is being entered to total back oil road 11e after back oil road 11g.This operating cylinder release scavenger valve 7 comprises operating cylinder release swivel nut 71, screw rod 72 and unloads pressing steel balls 73, operating cylinder release swivel nut 71 screws the right-hand member in the front side of valve seat 1 with thread fiting mode, and by forming sealing between sheathed the 5th seal washer 711 on it and valve seat 1, screw rod 72 and operating cylinder release swivel nut 71 screw-thread fit, and at the end of this screw rod 72, be fixed with one and hold for operator the screw rod knob 721 of pinching operation, unload on the passage that pressing steel balls 73 is arranged on back oil road 11g.

Provided a large pump core release manual operating valve 9, this large pump core release manual operating valve 9 position on valve seat 1 is positioned on the passage of back oil road 11g, and between pumping greatly between oil duct one-way valve 4 and operating cylinder release scavenger valve 7.This large pump core release manual operating valve 9 comprises screw rod swivel nut 91, decompression screws 92 and release of pressure steel ball 93, screw rod swivel nut 91 screws in the front side of valve seat 1 and above corresponding to aforementioned operating cylinder release scavenger valve 7 with thread fiting mode, on this screw rod swivel nut 91, be arranged with the 6th seal washer 911, by the 6th seal washer 911, guarantee the sealing effect between screw rod swivel nut 91 and valve seat 1, decompression screws 92 and screw rod swivel nut screw-thread fit, and the end in this decompression screws 92 is fixed with one for holding for operator the knob 921 of pinching, release of pressure steel ball 93 is arranged on the passage of back oil road 11g.

Please still see Fig. 1, provided a large pump core 8, this large pump core 8 matches with aforesaid large pump core chamber 11h, that is to say that large pump core 8 moves up and down is slidably matched with large pump core chamber 11h, and form and have a small pump core 81, this small pump core 81 match with aforesaid small pump core chamber 11i (being slidably matched) with narrow contracting state in the lower end of large pump core 8.

Preferably, be embedded a large pump core seal ring 10 on the chamber wall of aforesaid large pump core chamber 11h, large pump core 8 is sealed and matched with this large pump core seal ring 10.And have a small pump core o-ring groove 811 in end (lower end shown in Fig. 1) formation of aforesaid small pump core 81, and at the interior sheathed small pump core seal ring 8111 of this small pump core o-ring groove 811, by this small pump core seal ring 8111, form sealing with small pump core chamber 11i.

As shown in Figure 1, at the right-hand member of valve seat 1, towards the top of one end of delivery connection 13, offer one and press hand column mounting hole 16(tapped hole), at this, press and on hand column mounting hole 16, with thread fiting mode, be equipped with one and press hand column 161, aforesaid large pump core 8 is pressed hand column 161 each other on same straight line with this.

In Fig. 2, claimant also shows one and presses hand connecting sleeve 30, this right-hand member (location status shown in Fig. 2 is example) of pressing hand connecting sleeve 30 shows by bearing pin and aforementioned pin shaft hole 1611(Fig. 1 pressing on hand column 161) hinged, and it is hinged by the hinge position 82 on hinging shaft and large pump core 81 to press hand connecting sleeve 30 middle parts.

Claimant describes use of the present utility model in conjunction with Fig. 1 to Fig. 3, when providing hydraulic pressure to the operating cylinder 20 of the diving device of jack hydraulic press and use the piston column 201 during to the outer stretching, extension of operating cylinder 20 that makes operating cylinder 20, by operator, will press hand (not shown) and insert the aforesaid hand connecting sleeve 30 of pressing, and upper and lower samsara, (taking turns) to pressing handling, makes large pump core 8 move up and down together with small pump core 81.Now the fluid in the oil storage cylinder chamber 121 of oil storage cylinder 12 enters oil input channel 11j through hydraulic oil oil inlet hole 14 under the state filtering through screen tube 141, the fluid that enters oil input channel 11j is divided into two-way: the large pump oil input channel one-way valve 2(opening state of a road binders liquid warp) enter large pump core chamber 11h, another road binders liquid is opened through little pump oil input channel one-way valve 3() enter small pump core chamber 11i, when large pump core 8 moves downward, large, little pump oil input channel one-way valve 2, 3 all close, first advance into the fluid of large pump core chamber 11h successively through large pump core chamber oil road 11b, in opening state, pump greatly oil duct one-way valve 4, total oil road 11f and the little oil duct 11d that pumps enter delivery connection 13, by oil pipe pipeline 131, introduce operating cylinder 20, the fluid first advancing in the 11i of small pump core chamber enters delivery connection 13 through small pump core chamber oil road 11d and the little oil duct one-way valve 5 that pumps in opening state successively, by oil pipe pipeline 131, introduce operating cylinder 20, thereby the fast large oil mass fuel feeding of the low-pressure of the piston column 201 that is embodied in operating cylinder 20 when zero load.Yet when the piston column 201 of operating cylinder 20 is during in loaded-up condition, also when feeling pressing, operator presses hand when hard, by operator, large pump core release manual operating valve 9 is operated so, use pressure oil in the 11h of large pump core chamber by way of pumping greatly oil duct one-way valve 4 by the aforementioned large pump core release manual operating valve 9(opening state being arranged on the passage of back oil road 11g) introduce total back oil road 11e, by total back oil road 11e, introduce oil storage cylinder chamber 121, and the pressure oil that comes from small pump core chamber 11i is still through small pump core chamber oil road 11d, the little oil duct one-way valve 5 that pumps in opening state enters delivery connection 13, thereby embody the little oil mass of large pressure pump oil at a slow speed.

After operating cylinder 20 has been worked, with manual mode, open operating cylinder release scavenger valve 7, the fluid in operating cylinder 20 has developed into back leakage connection in fact through delivery connection 13(successively), operating cylinder release scavenger valve 7, back oil road 11g and total back oil road 11e and hydraulic oil spill port enter oil storage cylinder chamber 121 15 times.Oil-feed and oil return can be shown in the arrow in Fig. 3 referring to claimant, wherein: solid arrow represents to oil cylinder 20 fuel feeding of work, and dotted arrow represents that fluid returns into oil storage cylinder chamber 121 through total back oil road 11e.

Claims

1. the fast valve body structure of pump oil at a slow speed of a kind of manual tune, it is characterized in that comprising valve seat (1), on the left end end face of this valve seat (1), be equipped with an oil storage cylinder (12), and on the right-hand member end face of valve seat (1), be equipped with one for the delivery connection (13) of hydraulic oil is provided to operating cylinder, and on valve seat (1), offering large pump core chamber enters, oil road (11a, 11b), small pump core chamber is entered, oil road (11c, 11d), total back oil road (11e), total oil road (11f), back oil road (11g), large pump core chamber (11h), small pump core chamber (11i) and oil input channel (11j), oil input channel (11j) is positioned at the left end of valve seat (1), and communicate with described oil storage cylinder (12), one end of large pump core chamber oil input channel (11a) communicates with oil input channel (11j), the other end communicates with large pump core chamber (11h), one end of large pump core chamber oil road (11b) communicates with large pump core chamber (11h), the other end communicates with total oil road (11f), one end of small pump core chamber oil input channel (11c) communicates with oil input channel (11j), the other end communicates with small pump core chamber (11i), one end of small pump core chamber oil road (11d) communicates with small pump core chamber (11i), the other end communicates with total oil road (11f), and communicate with delivery connection (13), one end of total back oil road (11e) communicates with oil storage cylinder (12), the other end communicates with back oil road (11g), large pump core chamber (11h) is positioned at the middle position of valve seat (1), small pump core chamber (11i) is formed in the bottom of large pump core chamber (11h) with narrow contracting state, one large pump oil input channel one-way valve (2), this large pump oil input channel one-way valve (2) position on described valve seat (1) is positioned on described oil input channel (11j) and the passage between large pump core chamber oil input channel (11a), one little pump oil input channel one-way valve (3), this little pump oil input channel one-way valve (3) position on described valve seat (1) is positioned on described oil input channel (11j) and the passage between small pump core chamber oil input channel (11c), one pumps greatly oil duct one-way valve (4) and a little oil duct one-way valve (5) that pumps, pump greatly the position of oil duct one-way valve (4) on valve seat (1) and be positioned on the passage between described large pump core chamber oil road (11b) and described total oil road (11f), littlely pump that the position of oil duct one-way valve (5) on valve seat (1) is positioned at described small pump core chamber oil road (11d) and always on the passage between oil road (11f), one little pump pressure regulator valve (6), this little pump pressure regulator valve (6) is arranged on the passage of the small pump core chamber superpressure back oil road (11k) being opened on valve seat (1), and one end of this small pump core chamber superpressure back oil road (11k) communicates with described total back oil road (11e), and the other end communicates with described small pump core chamber (11i), one operating cylinder release scavenger valve (7), this operating cylinder release scavenger valve (7) position on described valve seat (1) is positioned on the passage of described back oil road (11g), one large pump core (8), this large pump core (8) matches with described large pump core chamber (11h), and in the narrow contracting in the bottom of this large pump core (8), form and have a small pump core (81), this small pump core (81) matches with described small pump core chamber (11i), one large pump core release manual operating valve (9), this large pump core release manual operating valve (9) position on described valve seat (1) is positioned on the passage of described back oil road (11g), and is positioned at described pumping greatly between oil duct one-way valve (4) and operating cylinder release scavenger valve (7).

2. the fast valve body structure of pump oil at a slow speed of manual tune according to claim 1, the large pump core chamber oil input channel (11a) described in it is characterized in that, large pump core chamber oil road (11b), small pump core chamber oil input channel (11c), small pump core chamber oil road (11d) and total back oil road (11e) are laterally offered along the length direction of described valve seat (1); Described oil input channel (11j), small pump core chamber superpressure back oil road (11k), total oil road (11f) and back oil road (11g) are longitudinally offered along the short transverse of described valve seat (1).

3. the fast valve body structure of pump oil at a slow speed of manual tune according to claim 1 and 2, is characterized in that described total back oil road (11e) is positioned between described large pump core chamber oil input channel (11a) and large pump core chamber oil road (11b) and small pump core chamber oil input channel (11c) and small pump core chamber oil road (11d).

4. the fast valve body structure of pump oil at a slow speed of manual tune according to claim 1, it is characterized in that being embedded with a large pump core seal ring (10) on the chamber wall in described large pump core chamber (11h), described large pump core (8) is sealed and matched with this large pump core seal ring (10); Position upper at described small pump core (81) and that be positioned at the end of small pump core (81) offers a small pump core o-ring groove (811), in this small pump core o-ring groove (811), be embedded with a small pump core seal ring (8111), this small pump core seal ring (8111) is sealed and matched with described small pump core chamber (11i).

5. the fast valve body structure of pump oil at a slow speed of manual tune according to claim 1, is characterized in that offering on the end face of one end of described oil storage cylinder (12) at described valve seat (1) one for the hydraulic oil in oil storage cylinder (12) being introduced to hydraulic oil oil inlet hole (14) described oil input channel (11j) and that communicate with oil input channel (11j) and being offered one for the hydraulic oil of described total back oil road (11e) being introduced to hydraulic oil spill port (15) in oil storage cylinder (12) and that communicate with total back oil road (11e).

6. the fast valve body structure of pump oil at a slow speed of manual tune according to claim 5, is characterized in that the position at the hydraulic oil oil inlet hole (14) corresponding to described is provided with the filtering net cylinder (141) of the impurity for filtering hydraulic oil.

7. the fast valve body structure of pump oil at a slow speed of manual tune according to claim 1, it is characterized in that offering towards the top of described delivery connection (13) one end at described valve seat (1) one and press hand column installation tapped hole (16), at this, press hand column and install that tapped hole (16) is upper to be equipped with one with thread fiting mode and to press hand column (161), described large pump core (8) with press hand column (161) and be located along the same line each other.

8. the fast valve body structure of pump oil at a slow speed of manual tune according to claim 1, it is characterized in that offering on the end face of one end of described delivery connection (13) at described valve seat (1) a hydraulic oil oil outlet (17), this hydraulic oil oil outlet (17) communicates with described small pump core chamber oil road (11d), and communicates with described delivery connection (13).