CN209761647U - Novel ultrahigh pressure pilot hydraulic manual pump - Google Patents

Abstract

The utility model discloses a novel superhigh pressure guide type hydraulic pressure hand pump relates to the technical field of hand pump equipment, especially a novel superhigh pressure guide type hydraulic pressure hand pump's technical field. The utility model discloses a guide's type overflow valve, when the piston is reciprocal to be suppressed, the resistance of overflow valve is overcome to the little pump core of high pressure, the case of overflow valve is upwards opened always, low-pressure oil directly accesss to the oil tank, the resistance of having avoided low-pressure oil to overcome the overflow valve always could return the oil tank, thereby avoided the effort of staff to the overflow valve, staff's burden has been alleviateed, realize laborsaving effect, thereby can realize the highest 400MPa operating pressure of manual pump, can make this superhigh pressure hydraulic pressure manual pump satisfy the operating mode requirement more than the 350MPa of needs operating pressure.

Description

Novel ultrahigh pressure pilot hydraulic manual pump

Technical Field

The utility model relates to a technical field of hand-operated pump equipment, especially a technical field of novel superhigh pressure guide's type hydraulic pressure hand-operated pump.

Background

a hydraulic hand pump is a small hydraulic pump capable of converting manual mechanical energy into hydraulic energy. Under the condition of using matched oil cylinder and special-purpose tool, it can implement various operations, such as lifting, bending, straightening, shearing, riveting, assembling and disassembling, and some building construction and military construction, etc. and has the characteristics of high pressure, manual operation, subminiature, convenient carrying, simple operation and extensive application range.

The device described in reference 1 (application publication No. CN105986983A, patent name: a new ultra-high pressure hydraulic hand pump) is technically characterized in that: the pump body 1, the sealing assembly 2, the check ring 3, the guide rod guide sleeve 4, the first O-shaped ring 5, the pump core 6, the inner hexagonal concave end holding screw 12, the oil absorption technical hole 9, the second O-shaped ring 10, the front seat 11, the inner hexagonal concave end holding screw 12, the inner hexagonal cylindrical head screw 13, the high-pressure regulating screw 14, the piston body 17, the pump core guide sleeve 15 and the guide rod 16 are applied to a manual hydraulic pump, the working pressure of the manual pump can be up to 350MPa or more by adopting a groove sealing mode, the ultrahigh-pressure hydraulic manual pump can meet the requirement of the use working condition that the working pressure is required to be more than 150MPa, meanwhile, the equipment structure is not very complicated compared with the traditional manual hydraulic pump, and the sealing performance is better, wherein the structure of the high-pressure regulating screw 14 is shown in figure 5 in the specification and comprises a screw, a pressure spring and a valve core, and the structure has;

When the piston is pressed in a reciprocating mode, the overflow valve is opened by low-pressure oil in the process of pressing the piston, so that the overflow valve is opened by the low-pressure oil and returns to the oil tank; in the reciprocating pressurizing process of the piston, the overflow valve can be opened and closed repeatedly, so that the overflow valve of the structure cannot be opened all the time, when the oil pressure in the oil cylinder rises gradually, as the overflow valve is opened and closed repeatedly, a resistance is formed in the process of pressurizing the piston (namely, the overflow valve is opened by hydraulic oil during pressurizing, and the overflow valve is closed during oil absorption), and the pressurizing process is time-consuming and labor-consuming; therefore, in practice, the device still needs to consume a great deal of force, so that the worker feels labor and fatigue easily after pressing for a long time.

Secondly, due to overhigh pressure, a piston rod in the oil cylinder cannot rise to the highest point; the reasons for this technical problem are mainly the following: 1. the physical strength consumption is too large in the operation process of the working personnel, and the physical strength is not needed; 2. the safety valve is automatically opened due to overhigh pressure; 3. the sealing assembly is damaged due to the fact that the pressing pressure is too high and the pressure cannot be released in time, and the oil pressure is reduced after the sealing assembly is damaged, so that the piston rod automatically falls.

And thirdly, in the reciprocating pressurizing process of the piston, the overflow valve is repeatedly opened and closed, and particularly, the overflow valve is damaged due to the repeated opening and closing action easily under the high-pressure condition, so that the service life of the device is influenced.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a novel superhigh pressure guide's type hydraulic pressure hand pump just in order to solve above-mentioned problem.

The utility model realizes the above purpose by the following technical proposal, a novel ultrahigh pressure pilot type hydraulic manual pump comprises a hydraulic manual pump main body and a pilot type overflow valve, wherein the hydraulic manual pump main body comprises an oil pipe port, a low pressure oil pipe, a high pressure oil inlet pipe and a piston, one side of the hydraulic manual pump main body is provided with a front seat through a bolt, the hydraulic manual pump main body and the front seat are provided with the oil pipe port, one end of the oil pipe port is connected with an oil tank, the other end of the oil pipe port is connected with the low pressure oil pipe through a check valve A, the low pressure oil pipe comprises a first low pressure oil pipe, a second low pressure oil pipe, a third low pressure oil pipe and a fourth low pressure oil pipe, the oil pipe port is connected with the high pressure oil inlet pipe through a check valve B, the high pressure oil inlet pipe comprises a first high pressure oil inlet pipe and a second high pressure oil inlet pipe, the hydraulic manual, the hydraulic manual pump is characterized in that a low-pressure large pump core is fixedly connected right below the piston, the low-pressure large pump core is in sealing and sliding connection with a low-pressure oil cavity, the low-pressure oil cavity is connected with a first low-pressure oil pipe through a second low-pressure oil pipe, a high-pressure small pump core is fixedly connected below the low-pressure large pump core, a high-pressure oil cavity is arranged below the high-pressure small pump core, the high-pressure small pump core is in sealing and sliding connection with the high-pressure oil cavity, the low-pressure oil cavity and the high-pressure oil cavity are connected through a third low-pressure oil pipe, a check valve C and a first high-pressure oil inlet pipe, the high-pressure oil cavity is connected with an oil outlet pipe through a second high-pressure oil inlet pipe and a check valve D, the oil outlet pipe is connected with an oil cylinder, the oil outlet pipe is also provided with a high-pressure oil pipe, a pilot type overflow valve, first low pressure oil pipe and second low pressure oil pipe are connected to fourth low pressure oil pipe's the other end, and guide's type overflow valve contains screw, pressure spring, case, and the case stated comprises last case and lower valve core to go up case and lower valve core formula as an organic whole the screw is through first O type circle and hydraulic pressure manual pump main part sealing connection, sets up the case under the screw, the case with the screw passes through the pressure spring and connects to case and guide's type overflow valve groove slip and sealing connection, guide's type overflow valve and front stall are opened there is the oil tank pipe, oil tank pipe connection oil tank.

Preferably, the valve core is sequentially provided with a retaining ring and a second O-shaped ring.

preferably, the fourth low-pressure oil pipe is communicated with a pilot-type overflow valve, and the high-pressure oil pipe is also communicated with the pilot-type overflow valve.

Preferably, the high-pressure oil inlet pipe is provided with a safety valve, and the oil outlet pipe is provided with a pressure relief valve.

The utility model discloses an actively the effect as follows:

The utility model discloses a guide's type overflow valve, when the piston is reciprocal to be suppressed, the resistance of overflow valve is overcome to the little pump core of high pressure, the case of overflow valve is upwards opened always, low-pressure oil directly accesss to the oil tank, the resistance of having avoided low-pressure oil to overcome the overflow valve always could return the oil tank, thereby avoided the effort of staff to the overflow valve, staff's burden has been alleviateed, realize laborsaving effect, thereby can realize the highest 400MPa operating pressure of manual pump, can make this superhigh pressure hydraulic pressure manual pump satisfy the operating mode requirement more than the 350MPa of needs operating pressure.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is a front view of the present invention.

Fig. 3 is a top view of the present invention.

Fig. 4 is a schematic structural view of a pilot-type relief valve.

Fig. 5 is a schematic structural diagram of the prior art.

In the figure: 1. the hydraulic manual pump comprises a hydraulic manual pump body, 2, a pilot overflow valve, 3, an oil pipe port, 4, a low-pressure oil pipe, 401, a first low-pressure oil pipe, 402, a second low-pressure oil pipe, 403, a third low-pressure oil pipe, 404, a fourth low-pressure oil pipe, 5, a high-pressure oil inlet pipe, 501, a first high-pressure oil inlet pipe, 502, a second high-pressure oil inlet pipe, 6, a piston, 7, a high-pressure pump core, 8, a small high-pressure pump core, 9, a pilot overflow valve groove, 10, a first O-ring, 11, a screw, 12, a compression spring, 13, a valve core, 1301, an upper valve core, 1302, a lower valve core, 14, a check ring, 15, a second O-ring, 16, a front seat, 17, a pressure relief valve, 18, a safety valve, 19, a low-pressure cavity, 20, a check valve A, 21, a check valve B, 22, a high-pressure cavity, 23, a check valve C, 24, a check.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1-4, a novel ultrahigh pressure pilot hydraulic manual pump comprises a hydraulic manual pump main body 1 and a pilot overflow valve 2, wherein the hydraulic manual pump main body 1 comprises an oil pipe port 3, a low pressure oil pipe 4, a high pressure oil inlet pipe 5 and a piston 6, a front seat 16 is mounted on one side of the hydraulic manual pump main body 1 through a bolt, the hydraulic manual pump main body 1 and the front seat 16 are provided with the oil pipe port 3, one end of the oil pipe port 3 is connected with an oil tank, the other end of the oil pipe port 3 is connected with the low pressure oil pipe 4 through a check valve a20, the low pressure oil pipe 4 comprises a first low pressure oil pipe 401, a second low pressure oil pipe 402, a third low pressure oil pipe 403 and a fourth low pressure oil pipe 404, the oil pipe port 3 is connected with the high pressure oil inlet pipe 5 through a check valve B21, the high pressure oil inlet pipe 5 comprises a first high pressure oil inlet pipe 501 and a second high pressure oil inlet pipe 502, a piston 6 is arranged in a low-pressure oil cavity 19, a low-pressure large pump core 7 is fixedly connected right below the piston 6, the low-pressure large pump core 7 and the low-pressure oil cavity 19 are in sealed and sliding connection, the low-pressure oil cavity 19 is connected with a first low-pressure oil pipe 401 through a second low-pressure oil pipe 402, a high-pressure small pump core 8 is fixedly connected below the low-pressure large pump core 7, a high-pressure oil cavity 22 is arranged below the high-pressure small pump core 8, the high-pressure small pump core 8 and the high-pressure oil cavity 22 are in sealed and sliding connection, the low-pressure oil cavity 19 and the high-pressure oil cavity 22 are connected through a third low-pressure oil pipe 403, a check valve C23 and a first high-pressure oil inlet pipe 501, the high-pressure oil cavity 22 is connected with an oil outlet pipe 25 through a second high-pressure oil inlet pipe 502 and a check valve D24, the oil outlet pipe 25 is connected with an oil cylinder, the oil outlet pipe 25 is also provided with a high-pressure, the other end of fourth low pressure oil pipe 404 and high pressure fuel pipe 26 connects pilot-operated overflow valve 2, and first low pressure fuel pipe 401 and second low pressure fuel pipe 402 are connected to the other end of fourth low pressure fuel pipe 404, and pilot-operated overflow valve 2 contains screw 11, pressure spring 12, case 13, screw 11 is through first O type circle 10 and hydraulic pressure hand pump main part 1 sealing connection, sets up case 13 under screw 11, the case comprises upper valve core 1301 and lower valve core 1302 to upper valve core 1301 and lower valve core 1302 formula as an organic whole, case 13 with screw 11 passes through pressure spring 12 and connects to case 13 and pilot-operated overflow valve groove 9 slip and sealing connection, pilot-operated overflow valve 2 and front seat 16 are opened there is oil tank pipe 17, and oil tank pipe 17 connects the oil tank.

As a technical optimization scheme, check valve A20 and check valve B21 can play the effect that prevents fluid backward flow to the oil tank, when this device is topping up, the inside fluid of low pressure oil pipe 4 can get into high pressure through check valve C23 and advance oil pipe 5, prevent that low pressure oil pipe 4 internal pressure is too high, protect this device, when the reciprocal pressurization of little pump core 7 of high pressure, check valve D24 can prevent that fluid from backward flow to high pressure oil chamber 22.

As a technical optimization scheme of the utility model, case 13 set gradually retaining ring 14, second O type circle 15 improves the leakproofness of case 13 and hydraulic pressure manual pump main part 1, prevents that the fluid of case 13 bottom from flowing to case 13 upper portion, retaining ring 14 plays the guide effect, and when case 13 reciprocated, retaining ring 14 protection case 13 improved the life of this device.

As a technical optimization scheme of the utility model, fourth low pressure oil pipe 404 switch-on pilot type overflow valve 2, high pressure fuel pipe 26 also switch-on pilot type overflow valve 2, fluid in the low pressure fuel pipe 4 can get into the last case 1301 department of case 13, high pressure fuel pipe 26's fluid can only get into the below of the lower case 1302 of case 13.

As a technical optimization scheme, high pressure advance oil pipe 5 and set up relief valve 18, relief valve 18 is located between check valve D24 and the high-pressure oil pocket 22, when the inside of high pressure advance oil pipe 5 blockked up the scheduling problem trouble, when the pressure that high pressure advances oil pipe 5 reached the relief valve and set for 18 values, relief valve 18 is opened, and the draining reduces the pressure that high pressure advances oil pipe 5 in, protection device, play oil pipe 25 set up relief valve 27, after the device finishes using, open relief valve 27 for fluid flows back to the oil tank.

Examples

Referring to fig. 1-4, in use of the device,

The piston 6 is pressed by a worker through a handle, the check valve A, the check valve B, the check valve C and the check valve D are opened, the piston 6 drives the large low-pressure pump core 7 and the small high-pressure pump core 8 to move up and down through reciprocating pressing of the piston 6, oil suction and oil discharge actions of the low-pressure oil cavity 19 and the high-pressure oil cavity 22 are achieved, oil enters the device from the oil pipe port 3, the low-pressure oil pipe 4 and the high-pressure oil inlet pipe 5 are filled with the oil, and the oil enters the oil cylinder through the oil outlet pipe 25;

The worker continues to press the piston 6 by the handle, the piston 6 drives the large low-pressure pump core 7 and the small high-pressure pump core 8 to move up and down, oil suction and oil discharge actions of the low-pressure oil cavity 19 and the high-pressure oil cavity 22 are realized, oil in the oil cylinder is continuously increased, the pressure is gradually increased, the oil in the oil cylinder enters the lower part of the lower valve core 1302 of the valve core 13 through the high-pressure oil pipe 26, the piston 6 is pressed in a reciprocating mode, the oil in the oil cylinder is continuously increased, when the oil pressure in the oil cylinder is larger than the resistance of the pilot overflow valve 2, the oil below the lower valve core 1302 jacks the lower valve core 1302, and the upper valve core 1301 and the lower valve core 1302 are integrated, so that the upper valve core 1301 is synchronously jacked upwards, and further, the valve core 13 is always jacked upwards; the worker continues to shake the handle to press the piston 6, when the piston 6 is pulled upwards, the low-pressure oil chamber 19 and the high-pressure oil chamber 22 perform oil absorption action, oil enters the oil inlet pipe 401 through the oil pipe port 3 and enters the low-pressure oil chamber 19 through the second low-pressure oil pipe 402; oil is introduced into the first high-pressure oil inlet pipe 501 through the oil pipe port 3 and the check valve B21 and then is introduced into the high-pressure oil chamber 22; when the piston 6 is pressed down, the check valve C23 and the check valve D24 are opened, part of oil in the low-pressure oil chamber 19 is introduced into the second low-pressure oil pipe 402 and the fourth low-pressure oil pipe 404, then enters the oil tank through the pilot overflow valve 2 and the oil tank pipe 17, and the rest of oil enters the high-pressure oil inlet pipe 5 through the third low-pressure oil pipe 403 and the check valve D24; the oil liquid in the high-pressure oil inlet pipe 5 continuously enters the oil cylinder through the check valve D24 and the oil outlet pipe 25;

When the device is finished, the pressure needs to be reduced to zero, the pressure relief valve 27 is opened, the pressure in the device is reduced, and the oil flows back to the oil tank through the pressure relief valve 27;

When the high-pressure oil inlet pipe 5 is blocked and other dangerous conditions occur, and the pressure of the high-pressure oil inlet pipe 5 reaches the set value of the safety valve 18, the safety valve 18 is opened to drain oil, so that the pressure in the high-pressure oil inlet pipe 5 is reduced, and the device is protected.

Wherein, piston 6 is reciprocal to be suppressed, fluid in the hydro-cylinder continues to increase, when the oil pressure in the hydro-cylinder is greater than the resistance of leading overflow valve 2, the fluid of the below of lower valve core 1302 jacks up lower valve core 1302, because upper valve core 1301 and lower valve core 1302 formula as an organic whole, consequently, upper valve core 1301 is the jack-up that makes progress in step, and is further, case 13 is pushed up all the time, thereby make leading overflow valve 2 open, low pressure oil directly accesss to the oil tank, it can the time-out tank to have avoided low pressure oil to overcome the resistance of leading overflow valve always, thereby avoided the effort of staff to leading overflow valve, the burden of staff has been alleviateed, realize laborsaving effect.

Wherein, the flow direction of low pressure oil: when the piston 6 is pulled upwards, the check valve A20 is opened, the low-pressure oil cavity 19 performs oil absorption action, oil enters the oil pipe port 3, the oil enters the check valve A20, enters the oil inlet pipe 401 and enters the low-pressure oil cavity 19 through the second low-pressure oil pipe 402; when the piston 6 is pressed downward, the low-pressure oil chamber 19 performs an oil discharge operation, the check valve C23 is opened, and oil enters the first high-pressure oil inlet pipe 501 through the third low-pressure oil pipe 403 and the check valve C23.

wherein, the flow direction of high-pressure oil: when the piston 6 is pulled upwards, the one-way valve B21 is opened, the high-pressure oil chamber 22 performs oil suction, and oil enters the first high-pressure oil inlet pipe 501 through the one-way valve B21 and then enters the high-pressure oil chamber 22; when the plug 6 is pressed downwards, the check valve D is opened, the high-pressure oil chamber 22 performs oil discharge, oil inside the high-pressure oil chamber 22 enters the second high-pressure oil inlet pipe 502, the oil inside the second high-pressure oil inlet pipe 502 is introduced into the oil outlet pipe 25 through the check valve D24, part of the oil flows into the high-pressure oil pipe 26, then flows into the lower part of the lower valve core 1302 of the pilot overflow valve 2, and the other part of the oil enters the oil cylinder, so that the inside of the device is filled with the oil, the piston 6 is continuously pressed, and the oil inside the oil cylinder is increased.

Examples are:

By adopting the pilot overflow valve 2(400MPa), when the resistance of the pilot overflow valve 2 is 2MPa, and the oil pressure in the oil cylinder is greater than 2MPa, the upper valve core 1301 of the valve core 13 of the pilot overflow valve 2 can be jacked open, the oil in the low-pressure oil pipe 4 can be directly led to the oil tank, the oil pressure in the oil cylinder presses the piston 6 downwards, the piston 6 drives the small high-pressure pump core 8 to move downwards, the oil discharge action of the high-pressure oil cavity 22 is realized, and the oil in the high-pressure oil inlet pipe 5 is pressed into the oil tank, so that the increase is realized. The handle operating force of the worker is equal to the force of pressing the piston 6 and the force of pressing the high-pressure small pump core 8, which are equal to 510.5N.

and the device that does not adopt the guiding overflow valve, the staff need to suppress the piston reciprocal, and low pressure oil need open the overflow valve through the process of suppressing the piston to make low pressure oil open the overflow valve and return to in the oil tank, therefore staff's handle operating force equals to suppress the power that piston 6 was suppressed and the power that suppresses high-pressure little pump core 8 + the power that suppresses low-pressure big pump core 7 equals 625.5N.

Therefore, this device can alleviate staff's burden in actual operation, realizes laborsaving effect to can realize the highest 400MPa operating pressure of manual pump, can make this superhigh pressure hydraulic pressure manual pump satisfy the operating mode requirement more than the required operating pressure 350 MPa.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (4)

1. A novel ultrahigh pressure pilot type hydraulic manual pump comprises a hydraulic manual pump main body and a pilot type overflow valve and is characterized in that the hydraulic manual pump main body comprises an oil pipe port, a low-pressure oil pipe, a high-pressure oil inlet pipe and a piston, a front seat is installed on one side of the hydraulic manual pump main body through a bolt, the hydraulic manual pump main body and the front seat are provided with the oil pipe port, one end of the oil pipe port is connected with an oil tank, the other end of the oil pipe port is connected with the low-pressure oil pipe through a check valve A, the low-pressure oil pipe comprises a first low-pressure oil pipe, a second low-pressure oil pipe, a third low-pressure oil pipe and a fourth low-pressure oil pipe, the oil pipe port is connected with the high-pressure oil inlet pipe through a check valve B, the high-pressure oil inlet pipe comprises a first high-pressure oil inlet pipe and a second high-pressure oil inlet pipe, the hydraulic manual pump main body is, the hydraulic manual pump is characterized in that the low-pressure large pump core is connected with the low-pressure oil cavity in a sealing and sliding manner, the low-pressure oil cavity is connected with a first low-pressure oil pipe through a second low-pressure oil pipe, the low-pressure small pump core is fixedly connected below the low-pressure large pump core, the high-pressure oil cavity is arranged below the high-pressure small pump core, the high-pressure small pump core is connected with the high-pressure oil cavity in a sealing and sliding manner, the low-pressure oil cavity and the high-pressure oil cavity are connected through a third low-pressure oil pipe, a check valve C and a first high-pressure oil inlet pipe, the high-pressure oil cavity is connected with an oil outlet pipe through a second high-pressure oil inlet pipe and a check valve D, the oil outlet pipe is connected with an oil cylinder and is also provided with a high-pressure oil pipe, the hydraulic manual pump main body is provided with a pilot overflow valve groove, the pilot overflow valve is arranged inside the pilot overflow, the pilot-operated overflow valve contains screw, pressure spring, case, the screw sets up the case through first O type circle and hydraulic pressure manual pump main part sealing connection under the screw, the case constitute by last case and lower valve core to go up case and lower valve core formula as an organic whole, the case with the screw passes through the pressure spring and connects to case and pilot-operated overflow valve groove slip and sealing connection, pilot-operated overflow valve and front stall are opened there is the oil tank pipe, oil tank pipe connection oil tank.

2. The novel ultrahigh pressure pilot hydraulic manual pump according to claim 1, characterized in that: the valve core is sequentially provided with a check ring and a second O-shaped ring.

3. The novel ultrahigh pressure pilot hydraulic manual pump according to claim 1, characterized in that: and the fourth low-pressure oil pipe is communicated with the pilot overflow valve, and the high-pressure oil pipe is also communicated with the pilot overflow valve.

4. the novel ultrahigh pressure pilot hydraulic manual pump according to claim 1, characterized in that: the high-pressure oil inlet pipe is provided with a safety valve, and the oil outlet pipe is provided with a pressure relief valve.